#include <linux/workqueue.h>
-#include "../net/mac80211/ieee80211_rate.h"
+#include "../net/mac80211/rate.h"
#include "iwl-3945.h"
#include <linux/workqueue.h>
-#include "../net/mac80211/ieee80211_rate.h"
+#include "../net/mac80211/rate.h"
#include "iwl-4965.h"
#include "iwl-core.h"
# mac80211 objects
mac80211-y := \
- ieee80211.o \
- ieee80211_ioctl.o \
+ main.o \
+ wext.o \
sta_info.o \
wep.o \
wpa.o \
- ieee80211_sta.o \
- ieee80211_iface.o \
- ieee80211_rate.o \
+ mlme.o \
+ iface.o \
+ rate.o \
michael.o \
tkip.o \
aes_ccm.o \
util.o \
event.o
-mac80211-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o
+mac80211-$(CONFIG_MAC80211_LEDS) += led.o
mac80211-$(CONFIG_NET_SCHED) += wme.o
mac80211-$(CONFIG_MAC80211_DEBUGFS) += \
debugfs.o \
#include <linux/err.h>
#include <net/mac80211.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "aes_ccm.h"
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "cfg.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "mesh.h"
static enum ieee80211_if_types
#include <linux/debugfs.h>
#include <linux/rtnetlink.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "debugfs.h"
int mac80211_open_file_generic(struct inode *inode, struct file *file)
#include <linux/kobject.h>
#include "ieee80211_i.h"
-#include "ieee80211_key.h"
+#include "key.h"
#include "debugfs.h"
#include "debugfs_key.h"
#include <net/mac80211.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "debugfs.h"
#include "debugfs_netdev.h"
+++ /dev/null
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <net/mac80211.h>
-#include <net/ieee80211_radiotap.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <linux/rtnetlink.h>
-#include <linux/bitmap.h>
-#include <net/net_namespace.h>
-#include <net/cfg80211.h>
-
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "mesh.h"
-#include "wep.h"
-#include "wme.h"
-#include "aes_ccm.h"
-#include "ieee80211_led.h"
-#include "cfg.h"
-#include "debugfs.h"
-#include "debugfs_netdev.h"
-
-#define SUPP_MCS_SET_LEN 16
-
-/*
- * For seeing transmitted packets on monitor interfaces
- * we have a radiotap header too.
- */
-struct ieee80211_tx_status_rtap_hdr {
- struct ieee80211_radiotap_header hdr;
- __le16 tx_flags;
- u8 data_retries;
-} __attribute__ ((packed));
-
-/* common interface routines */
-
-static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr)
-{
- memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
- return ETH_ALEN;
-}
-
-/* must be called under mdev tx lock */
-static void ieee80211_configure_filter(struct ieee80211_local *local)
-{
- unsigned int changed_flags;
- unsigned int new_flags = 0;
-
- if (atomic_read(&local->iff_promiscs))
- new_flags |= FIF_PROMISC_IN_BSS;
-
- if (atomic_read(&local->iff_allmultis))
- new_flags |= FIF_ALLMULTI;
-
- if (local->monitors)
- new_flags |= FIF_BCN_PRBRESP_PROMISC;
-
- if (local->fif_fcsfail)
- new_flags |= FIF_FCSFAIL;
-
- if (local->fif_plcpfail)
- new_flags |= FIF_PLCPFAIL;
-
- if (local->fif_control)
- new_flags |= FIF_CONTROL;
-
- if (local->fif_other_bss)
- new_flags |= FIF_OTHER_BSS;
-
- changed_flags = local->filter_flags ^ new_flags;
-
- /* be a bit nasty */
- new_flags |= (1<<31);
-
- local->ops->configure_filter(local_to_hw(local),
- changed_flags, &new_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
-
- WARN_ON(new_flags & (1<<31));
-
- local->filter_flags = new_flags & ~(1<<31);
-}
-
-/* master interface */
-
-static int ieee80211_master_open(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- int res = -EOPNOTSUPP;
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(sdata, &local->interfaces, list) {
- if (sdata->dev != dev && netif_running(sdata->dev)) {
- res = 0;
- break;
- }
- }
- return res;
-}
-
-static int ieee80211_master_stop(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(sdata, &local->interfaces, list)
- if (sdata->dev != dev && netif_running(sdata->dev))
- dev_close(sdata->dev);
-
- return 0;
-}
-
-static void ieee80211_master_set_multicast_list(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- ieee80211_configure_filter(local);
-}
-
-/* regular interfaces */
-
-static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
-{
- int meshhdrlen;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0;
-
- /* FIX: what would be proper limits for MTU?
- * This interface uses 802.3 frames. */
- if (new_mtu < 256 ||
- new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) {
- printk(KERN_WARNING "%s: invalid MTU %d\n",
- dev->name, new_mtu);
- return -EINVAL;
- }
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- dev->mtu = new_mtu;
- return 0;
-}
-
-static inline int identical_mac_addr_allowed(int type1, int type2)
-{
- return (type1 == IEEE80211_IF_TYPE_MNTR ||
- type2 == IEEE80211_IF_TYPE_MNTR ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_WDS) ||
- (type1 == IEEE80211_IF_TYPE_WDS &&
- (type2 == IEEE80211_IF_TYPE_WDS ||
- type2 == IEEE80211_IF_TYPE_AP)) ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_VLAN) ||
- (type1 == IEEE80211_IF_TYPE_VLAN &&
- (type2 == IEEE80211_IF_TYPE_AP ||
- type2 == IEEE80211_IF_TYPE_VLAN)));
-}
-
-static int ieee80211_open(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata, *nsdata;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_init_conf conf;
- int res;
- bool need_hw_reconfig = 0;
- struct sta_info *sta;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- /* we hold the RTNL here so can safely walk the list */
- list_for_each_entry(nsdata, &local->interfaces, list) {
- struct net_device *ndev = nsdata->dev;
-
- if (ndev != dev && ndev != local->mdev && netif_running(ndev)) {
- /*
- * Allow only a single IBSS interface to be up at any
- * time. This is restricted because beacon distribution
- * cannot work properly if both are in the same IBSS.
- *
- * To remove this restriction we'd have to disallow them
- * from setting the same SSID on different IBSS interfaces
- * belonging to the same hardware. Then, however, we're
- * faced with having to adopt two different TSF timers...
- */
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)
- return -EBUSY;
-
- /*
- * Disallow multiple IBSS/STA mode interfaces.
- *
- * This is a technical restriction, it is possible although
- * most likely not IEEE 802.11 compliant to have multiple
- * STAs with just a single hardware (the TSF timer will not
- * be adjusted properly.)
- *
- * However, because mac80211 uses the master device's BSS
- * information for each STA/IBSS interface, doing this will
- * currently corrupt that BSS information completely, unless,
- * a not very useful case, both STAs are associated to the
- * same BSS.
- *
- * To remove this restriction, the BSS information needs to
- * be embedded in the STA/IBSS mode sdata instead of using
- * the master device's BSS structure.
- */
- if ((sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) &&
- (nsdata->vif.type == IEEE80211_IF_TYPE_STA ||
- nsdata->vif.type == IEEE80211_IF_TYPE_IBSS))
- return -EBUSY;
-
- /*
- * The remaining checks are only performed for interfaces
- * with the same MAC address.
- */
- if (compare_ether_addr(dev->dev_addr, ndev->dev_addr))
- continue;
-
- /*
- * check whether it may have the same address
- */
- if (!identical_mac_addr_allowed(sdata->vif.type,
- nsdata->vif.type))
- return -ENOTUNIQ;
-
- /*
- * can only add VLANs to enabled APs
- */
- if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN &&
- nsdata->vif.type == IEEE80211_IF_TYPE_AP)
- sdata->u.vlan.ap = nsdata;
- }
- }
-
- switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_WDS:
- if (is_zero_ether_addr(sdata->u.wds.remote_addr))
- return -ENOLINK;
-
- /* Create STA entry for the WDS peer */
- sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
- GFP_KERNEL);
- if (!sta)
- return -ENOMEM;
-
- sta->flags |= WLAN_STA_AUTHORIZED;
-
- res = sta_info_insert(sta);
- if (res) {
- /* STA has been freed */
- return res;
- }
- break;
- case IEEE80211_IF_TYPE_VLAN:
- if (!sdata->u.vlan.ap)
- return -ENOLINK;
- break;
- case IEEE80211_IF_TYPE_AP:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_IBSS:
- case IEEE80211_IF_TYPE_MESH_POINT:
- /* no special treatment */
- break;
- case IEEE80211_IF_TYPE_INVALID:
- /* cannot happen */
- WARN_ON(1);
- break;
- }
-
- if (local->open_count == 0) {
- res = 0;
- if (local->ops->start)
- res = local->ops->start(local_to_hw(local));
- if (res)
- return res;
- need_hw_reconfig = 1;
- ieee80211_led_radio(local, local->hw.conf.radio_enabled);
- }
-
- switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_VLAN:
- list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans);
- /* no need to tell driver */
- break;
- case IEEE80211_IF_TYPE_MNTR:
- if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
- local->cooked_mntrs++;
- break;
- }
-
- /* must be before the call to ieee80211_configure_filter */
- local->monitors++;
- if (local->monitors == 1)
- local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
-
- if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
- local->fif_fcsfail++;
- if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
- local->fif_plcpfail++;
- if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
- local->fif_control++;
- if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
- local->fif_other_bss++;
-
- netif_tx_lock_bh(local->mdev);
- ieee80211_configure_filter(local);
- netif_tx_unlock_bh(local->mdev);
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- /* fall through */
- default:
- conf.vif = &sdata->vif;
- conf.type = sdata->vif.type;
- conf.mac_addr = dev->dev_addr;
- res = local->ops->add_interface(local_to_hw(local), &conf);
- if (res && !local->open_count && local->ops->stop)
- local->ops->stop(local_to_hw(local));
- if (res)
- return res;
-
- ieee80211_if_config(dev);
- ieee80211_reset_erp_info(dev);
- ieee80211_enable_keys(sdata);
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
- !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
- netif_carrier_off(dev);
- else
- netif_carrier_on(dev);
- }
-
- if (local->open_count == 0) {
- res = dev_open(local->mdev);
- WARN_ON(res);
- tasklet_enable(&local->tx_pending_tasklet);
- tasklet_enable(&local->tasklet);
- }
-
- /*
- * set_multicast_list will be invoked by the networking core
- * which will check whether any increments here were done in
- * error and sync them down to the hardware as filter flags.
- */
- if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
- atomic_inc(&local->iff_allmultis);
-
- if (sdata->flags & IEEE80211_SDATA_PROMISC)
- atomic_inc(&local->iff_promiscs);
-
- local->open_count++;
- if (need_hw_reconfig)
- ieee80211_hw_config(local);
-
- /*
- * ieee80211_sta_work is disabled while network interface
- * is down. Therefore, some configuration changes may not
- * yet be effective. Trigger execution of ieee80211_sta_work
- * to fix this.
- */
- if(sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- queue_work(local->hw.workqueue, &ifsta->work);
- }
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static int ieee80211_stop(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_init_conf conf;
- struct sta_info *sta;
-
- /*
- * Stop TX on this interface first.
- */
- netif_stop_queue(dev);
-
- /*
- * Now delete all active aggregation sessions.
- */
- rcu_read_lock();
-
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
- if (sta->sdata == sdata)
- ieee80211_sta_tear_down_BA_sessions(dev, sta->addr);
- }
-
- rcu_read_unlock();
-
- /*
- * Remove all stations associated with this interface.
- *
- * This must be done before calling ops->remove_interface()
- * because otherwise we can later invoke ops->sta_notify()
- * whenever the STAs are removed, and that invalidates driver
- * assumptions about always getting a vif pointer that is valid
- * (because if we remove a STA after ops->remove_interface()
- * the driver will have removed the vif info already!)
- *
- * We could relax this and only unlink the stations from the
- * hash table and list but keep them on a per-sdata list that
- * will be inserted back again when the interface is brought
- * up again, but I don't currently see a use case for that,
- * except with WDS which gets a STA entry created when it is
- * brought up.
- */
- sta_info_flush(local, sdata);
-
- /*
- * Don't count this interface for promisc/allmulti while it
- * is down. dev_mc_unsync() will invoke set_multicast_list
- * on the master interface which will sync these down to the
- * hardware as filter flags.
- */
- if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
- atomic_dec(&local->iff_allmultis);
-
- if (sdata->flags & IEEE80211_SDATA_PROMISC)
- atomic_dec(&local->iff_promiscs);
-
- dev_mc_unsync(local->mdev, dev);
-
- /* APs need special treatment */
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
- struct ieee80211_sub_if_data *vlan, *tmp;
- struct beacon_data *old_beacon = sdata->u.ap.beacon;
-
- /* remove beacon */
- rcu_assign_pointer(sdata->u.ap.beacon, NULL);
- synchronize_rcu();
- kfree(old_beacon);
-
- /* down all dependent devices, that is VLANs */
- list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans,
- u.vlan.list)
- dev_close(vlan->dev);
- WARN_ON(!list_empty(&sdata->u.ap.vlans));
- }
-
- local->open_count--;
-
- switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_VLAN:
- list_del(&sdata->u.vlan.list);
- sdata->u.vlan.ap = NULL;
- /* no need to tell driver */
- break;
- case IEEE80211_IF_TYPE_MNTR:
- if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
- local->cooked_mntrs--;
- break;
- }
-
- local->monitors--;
- if (local->monitors == 0)
- local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
-
- if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
- local->fif_fcsfail--;
- if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
- local->fif_plcpfail--;
- if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
- local->fif_control--;
- if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
- local->fif_other_bss--;
-
- netif_tx_lock_bh(local->mdev);
- ieee80211_configure_filter(local);
- netif_tx_unlock_bh(local->mdev);
- break;
- case IEEE80211_IF_TYPE_MESH_POINT:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- sdata->u.sta.state = IEEE80211_DISABLED;
- del_timer_sync(&sdata->u.sta.timer);
- /*
- * When we get here, the interface is marked down.
- * Call synchronize_rcu() to wait for the RX path
- * should it be using the interface and enqueuing
- * frames at this very time on another CPU.
- */
- synchronize_rcu();
- skb_queue_purge(&sdata->u.sta.skb_queue);
-
- if (local->scan_dev == sdata->dev) {
- if (!local->ops->hw_scan) {
- local->sta_sw_scanning = 0;
- cancel_delayed_work(&local->scan_work);
- } else
- local->sta_hw_scanning = 0;
- }
-
- flush_workqueue(local->hw.workqueue);
-
- sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
- kfree(sdata->u.sta.extra_ie);
- sdata->u.sta.extra_ie = NULL;
- sdata->u.sta.extra_ie_len = 0;
- /* fall through */
- default:
- conf.vif = &sdata->vif;
- conf.type = sdata->vif.type;
- conf.mac_addr = dev->dev_addr;
- /* disable all keys for as long as this netdev is down */
- ieee80211_disable_keys(sdata);
- local->ops->remove_interface(local_to_hw(local), &conf);
- }
-
- if (local->open_count == 0) {
- if (netif_running(local->mdev))
- dev_close(local->mdev);
-
- if (local->ops->stop)
- local->ops->stop(local_to_hw(local));
-
- ieee80211_led_radio(local, 0);
-
- tasklet_disable(&local->tx_pending_tasklet);
- tasklet_disable(&local->tasklet);
- }
-
- return 0;
-}
-
-int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata;
- u16 start_seq_num = 0;
- u8 *state;
- int ret;
- DECLARE_MAC_BUF(mac);
-
- if (tid >= STA_TID_NUM)
- return -EINVAL;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
- print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- rcu_read_lock();
-
- sta = sta_info_get(local, ra);
- if (!sta) {
- printk(KERN_DEBUG "Could not find the station\n");
- rcu_read_unlock();
- return -ENOENT;
- }
-
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
-
- /* we have tried too many times, receiver does not want A-MPDU */
- if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
- ret = -EBUSY;
- goto start_ba_exit;
- }
-
- state = &sta->ampdu_mlme.tid_state_tx[tid];
- /* check if the TID is not in aggregation flow already */
- if (*state != HT_AGG_STATE_IDLE) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "BA request denied - session is not "
- "idle on tid %u\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- ret = -EAGAIN;
- goto start_ba_exit;
- }
-
- /* prepare A-MPDU MLME for Tx aggregation */
- sta->ampdu_mlme.tid_tx[tid] =
- kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
- if (!sta->ampdu_mlme.tid_tx[tid]) {
- if (net_ratelimit())
- printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
- tid);
- ret = -ENOMEM;
- goto start_ba_exit;
- }
- /* Tx timer */
- sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
- sta_addba_resp_timer_expired;
- sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
- (unsigned long)&sta->timer_to_tid[tid];
- init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-
- /* ensure that TX flow won't interrupt us
- * until the end of the call to requeue function */
- spin_lock_bh(&local->mdev->queue_lock);
-
- /* create a new queue for this aggregation */
- ret = ieee80211_ht_agg_queue_add(local, sta, tid);
-
- /* case no queue is available to aggregation
- * don't switch to aggregation */
- if (ret) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "BA request denied - queue unavailable for"
- " tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto start_ba_err;
- }
- sdata = sta->sdata;
-
- /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
- * call back right away, it must see that the flow has begun */
- *state |= HT_ADDBA_REQUESTED_MSK;
-
- if (local->ops->ampdu_action)
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
- ra, tid, &start_seq_num);
-
- if (ret) {
- /* No need to requeue the packets in the agg queue, since we
- * held the tx lock: no packet could be enqueued to the newly
- * allocated queue */
- ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "BA request denied - HW unavailable for"
- " tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- *state = HT_AGG_STATE_IDLE;
- goto start_ba_err;
- }
-
- /* Will put all the packets in the new SW queue */
- ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
- spin_unlock_bh(&local->mdev->queue_lock);
-
- /* send an addBA request */
- sta->ampdu_mlme.dialog_token_allocator++;
- sta->ampdu_mlme.tid_tx[tid]->dialog_token =
- sta->ampdu_mlme.dialog_token_allocator;
- sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
-
- ieee80211_send_addba_request(sta->sdata->dev, ra, tid,
- sta->ampdu_mlme.tid_tx[tid]->dialog_token,
- sta->ampdu_mlme.tid_tx[tid]->ssn,
- 0x40, 5000);
-
- /* activate the timer for the recipient's addBA response */
- sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
- jiffies + ADDBA_RESP_INTERVAL;
- add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
- printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
- goto start_ba_exit;
-
-start_ba_err:
- kfree(sta->ampdu_mlme.tid_tx[tid]);
- sta->ampdu_mlme.tid_tx[tid] = NULL;
- spin_unlock_bh(&local->mdev->queue_lock);
- ret = -EBUSY;
-start_ba_exit:
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- rcu_read_unlock();
- return ret;
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
-
-int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
- u8 *ra, u16 tid,
- enum ieee80211_back_parties initiator)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sta_info *sta;
- u8 *state;
- int ret = 0;
- DECLARE_MAC_BUF(mac);
-
- if (tid >= STA_TID_NUM)
- return -EINVAL;
-
- rcu_read_lock();
- sta = sta_info_get(local, ra);
- if (!sta) {
- rcu_read_unlock();
- return -ENOENT;
- }
-
- /* check if the TID is in aggregation */
- state = &sta->ampdu_mlme.tid_state_tx[tid];
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
-
- if (*state != HT_AGG_STATE_OPERATIONAL) {
- ret = -ENOENT;
- goto stop_BA_exit;
- }
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
- print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
-
- *state = HT_AGG_STATE_REQ_STOP_BA_MSK |
- (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
-
- if (local->ops->ampdu_action)
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
- ra, tid, NULL);
-
- /* case HW denied going back to legacy */
- if (ret) {
- WARN_ON(ret != -EBUSY);
- *state = HT_AGG_STATE_OPERATIONAL;
- ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
- goto stop_BA_exit;
- }
-
-stop_BA_exit:
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- rcu_read_unlock();
- return ret;
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
-
-void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sta_info *sta;
- u8 *state;
- DECLARE_MAC_BUF(mac);
-
- if (tid >= STA_TID_NUM) {
- printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
- tid, STA_TID_NUM);
- return;
- }
-
- rcu_read_lock();
- sta = sta_info_get(local, ra);
- if (!sta) {
- rcu_read_unlock();
- printk(KERN_DEBUG "Could not find station: %s\n",
- print_mac(mac, ra));
- return;
- }
-
- state = &sta->ampdu_mlme.tid_state_tx[tid];
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
-
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
- printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
- *state);
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- rcu_read_unlock();
- return;
- }
-
- WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
-
- *state |= HT_ADDBA_DRV_READY_MSK;
-
- if (*state == HT_AGG_STATE_OPERATIONAL) {
- printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
- ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
- }
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- rcu_read_unlock();
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
-
-void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct sta_info *sta;
- u8 *state;
- int agg_queue;
- DECLARE_MAC_BUF(mac);
-
- if (tid >= STA_TID_NUM) {
- printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
- tid, STA_TID_NUM);
- return;
- }
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
- print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- rcu_read_lock();
- sta = sta_info_get(local, ra);
- if (!sta) {
- printk(KERN_DEBUG "Could not find station: %s\n",
- print_mac(mac, ra));
- rcu_read_unlock();
- return;
- }
- state = &sta->ampdu_mlme.tid_state_tx[tid];
-
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
- if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
- printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- rcu_read_unlock();
- return;
- }
-
- if (*state & HT_AGG_STATE_INITIATOR_MSK)
- ieee80211_send_delba(sta->sdata->dev, ra, tid,
- WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
-
- agg_queue = sta->tid_to_tx_q[tid];
-
- /* avoid ordering issues: we are the only one that can modify
- * the content of the qdiscs */
- spin_lock_bh(&local->mdev->queue_lock);
- /* remove the queue for this aggregation */
- ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
- spin_unlock_bh(&local->mdev->queue_lock);
-
- /* we just requeued the all the frames that were in the removed
- * queue, and since we might miss a softirq we do netif_schedule.
- * ieee80211_wake_queue is not used here as this queue is not
- * necessarily stopped */
- netif_schedule(local->mdev);
- *state = HT_AGG_STATE_IDLE;
- sta->ampdu_mlme.addba_req_num[tid] = 0;
- kfree(sta->ampdu_mlme.tid_tx[tid]);
- sta->ampdu_mlme.tid_tx[tid] = NULL;
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
-
- rcu_read_unlock();
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
-
-void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
- const u8 *ra, u16 tid)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_ra_tid *ra_tid;
- struct sk_buff *skb = dev_alloc_skb(0);
-
- if (unlikely(!skb)) {
- if (net_ratelimit())
- printk(KERN_WARNING "%s: Not enough memory, "
- "dropping start BA session", skb->dev->name);
- return;
- }
- ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
- memcpy(&ra_tid->ra, ra, ETH_ALEN);
- ra_tid->tid = tid;
-
- skb->pkt_type = IEEE80211_ADDBA_MSG;
- skb_queue_tail(&local->skb_queue, skb);
- tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
-
-void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
- const u8 *ra, u16 tid)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_ra_tid *ra_tid;
- struct sk_buff *skb = dev_alloc_skb(0);
-
- if (unlikely(!skb)) {
- if (net_ratelimit())
- printk(KERN_WARNING "%s: Not enough memory, "
- "dropping stop BA session", skb->dev->name);
- return;
- }
- ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
- memcpy(&ra_tid->ra, ra, ETH_ALEN);
- ra_tid->tid = tid;
-
- skb->pkt_type = IEEE80211_DELBA_MSG;
- skb_queue_tail(&local->skb_queue, skb);
- tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
-
-static void ieee80211_set_multicast_list(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int allmulti, promisc, sdata_allmulti, sdata_promisc;
-
- allmulti = !!(dev->flags & IFF_ALLMULTI);
- promisc = !!(dev->flags & IFF_PROMISC);
- sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
- sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC);
-
- if (allmulti != sdata_allmulti) {
- if (dev->flags & IFF_ALLMULTI)
- atomic_inc(&local->iff_allmultis);
- else
- atomic_dec(&local->iff_allmultis);
- sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
- }
-
- if (promisc != sdata_promisc) {
- if (dev->flags & IFF_PROMISC)
- atomic_inc(&local->iff_promiscs);
- else
- atomic_dec(&local->iff_promiscs);
- sdata->flags ^= IEEE80211_SDATA_PROMISC;
- }
-
- dev_mc_sync(local->mdev, dev);
-}
-
-static const struct header_ops ieee80211_header_ops = {
- .create = eth_header,
- .parse = header_parse_80211,
- .rebuild = eth_rebuild_header,
- .cache = eth_header_cache,
- .cache_update = eth_header_cache_update,
-};
-
-/* Must not be called for mdev */
-void ieee80211_if_setup(struct net_device *dev)
-{
- ether_setup(dev);
- dev->hard_start_xmit = ieee80211_subif_start_xmit;
- dev->wireless_handlers = &ieee80211_iw_handler_def;
- dev->set_multicast_list = ieee80211_set_multicast_list;
- dev->change_mtu = ieee80211_change_mtu;
- dev->open = ieee80211_open;
- dev->stop = ieee80211_stop;
- dev->destructor = ieee80211_if_free;
-}
-
-/* everything else */
-
-static int __ieee80211_if_config(struct net_device *dev,
- struct sk_buff *beacon,
- struct ieee80211_tx_control *control)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_conf conf;
-
- if (!local->ops->config_interface || !netif_running(dev))
- return 0;
-
- memset(&conf, 0, sizeof(conf));
- conf.type = sdata->vif.type;
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- conf.bssid = sdata->u.sta.bssid;
- conf.ssid = sdata->u.sta.ssid;
- conf.ssid_len = sdata->u.sta.ssid_len;
- } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
- conf.beacon = beacon;
- ieee80211_start_mesh(dev);
- } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
- conf.ssid = sdata->u.ap.ssid;
- conf.ssid_len = sdata->u.ap.ssid_len;
- conf.beacon = beacon;
- conf.beacon_control = control;
- }
- return local->ops->config_interface(local_to_hw(local),
- &sdata->vif, &conf);
-}
-
-int ieee80211_if_config(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT &&
- (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
- return ieee80211_if_config_beacon(dev);
- return __ieee80211_if_config(dev, NULL, NULL);
-}
-
-int ieee80211_if_config_beacon(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_control control;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sk_buff *skb;
-
- if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
- return 0;
- skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif,
- &control);
- if (!skb)
- return -ENOMEM;
- return __ieee80211_if_config(dev, skb, &control);
-}
-
-int ieee80211_hw_config(struct ieee80211_local *local)
-{
- struct ieee80211_channel *chan;
- int ret = 0;
-
- if (local->sta_sw_scanning)
- chan = local->scan_channel;
- else
- chan = local->oper_channel;
-
- local->hw.conf.channel = chan;
-
- if (!local->hw.conf.power_level)
- local->hw.conf.power_level = chan->max_power;
- else
- local->hw.conf.power_level = min(chan->max_power,
- local->hw.conf.power_level);
-
- local->hw.conf.max_antenna_gain = chan->max_antenna_gain;
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n",
- wiphy_name(local->hw.wiphy), chan->center_freq);
-#endif
-
- if (local->open_count)
- ret = local->ops->config(local_to_hw(local), &local->hw.conf);
-
- return ret;
-}
-
-/**
- * ieee80211_handle_ht should be used only after legacy configuration
- * has been determined namely band, as ht configuration depends upon
- * the hardware's HT abilities for a _specific_ band.
- */
-u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
- struct ieee80211_ht_info *req_ht_cap,
- struct ieee80211_ht_bss_info *req_bss_cap)
-{
- struct ieee80211_conf *conf = &local->hw.conf;
- struct ieee80211_supported_band *sband;
- struct ieee80211_ht_info ht_conf;
- struct ieee80211_ht_bss_info ht_bss_conf;
- int i;
- u32 changed = 0;
-
- sband = local->hw.wiphy->bands[conf->channel->band];
-
- /* HT is not supported */
- if (!sband->ht_info.ht_supported) {
- conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
- return 0;
- }
-
- memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info));
- memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info));
-
- if (enable_ht) {
- if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE))
- changed |= BSS_CHANGED_HT;
-
- conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
- ht_conf.ht_supported = 1;
-
- ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
- ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
- ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
-
- for (i = 0; i < SUPP_MCS_SET_LEN; i++)
- ht_conf.supp_mcs_set[i] =
- sband->ht_info.supp_mcs_set[i] &
- req_ht_cap->supp_mcs_set[i];
-
- ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
- ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
- ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
-
- ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
- ht_conf.ampdu_density = req_ht_cap->ampdu_density;
-
- /* if bss configuration changed store the new one */
- if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) ||
- memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) {
- changed |= BSS_CHANGED_HT;
- memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf));
- memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf));
- }
- } else {
- if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)
- changed |= BSS_CHANGED_HT;
- conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
- }
-
- return changed;
-}
-
-void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
- u32 changed)
-{
- struct ieee80211_local *local = sdata->local;
-
- if (!changed)
- return;
-
- if (local->ops->bss_info_changed)
- local->ops->bss_info_changed(local_to_hw(local),
- &sdata->vif,
- &sdata->bss_conf,
- changed);
-}
-
-void ieee80211_reset_erp_info(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- sdata->bss_conf.use_cts_prot = 0;
- sdata->bss_conf.use_short_preamble = 0;
- ieee80211_bss_info_change_notify(sdata,
- BSS_CHANGED_ERP_CTS_PROT |
- BSS_CHANGED_ERP_PREAMBLE);
-}
-
-void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_tx_status *saved;
- int tmp;
-
- skb->dev = local->mdev;
- saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
- if (unlikely(!saved)) {
- if (net_ratelimit())
- printk(KERN_WARNING "%s: Not enough memory, "
- "dropping tx status", skb->dev->name);
- /* should be dev_kfree_skb_irq, but due to this function being
- * named _irqsafe instead of just _irq we can't be sure that
- * people won't call it from non-irq contexts */
- dev_kfree_skb_any(skb);
- return;
- }
- memcpy(saved, status, sizeof(struct ieee80211_tx_status));
- /* copy pointer to saved status into skb->cb for use by tasklet */
- memcpy(skb->cb, &saved, sizeof(saved));
-
- skb->pkt_type = IEEE80211_TX_STATUS_MSG;
- skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
- &local->skb_queue : &local->skb_queue_unreliable, skb);
- tmp = skb_queue_len(&local->skb_queue) +
- skb_queue_len(&local->skb_queue_unreliable);
- while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
- (skb = skb_dequeue(&local->skb_queue_unreliable))) {
- memcpy(&saved, skb->cb, sizeof(saved));
- kfree(saved);
- dev_kfree_skb_irq(skb);
- tmp--;
- I802_DEBUG_INC(local->tx_status_drop);
- }
- tasklet_schedule(&local->tasklet);
-}
-EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
-
-static void ieee80211_tasklet_handler(unsigned long data)
-{
- struct ieee80211_local *local = (struct ieee80211_local *) data;
- struct sk_buff *skb;
- struct ieee80211_rx_status rx_status;
- struct ieee80211_tx_status *tx_status;
- struct ieee80211_ra_tid *ra_tid;
-
- while ((skb = skb_dequeue(&local->skb_queue)) ||
- (skb = skb_dequeue(&local->skb_queue_unreliable))) {
- switch (skb->pkt_type) {
- case IEEE80211_RX_MSG:
- /* status is in skb->cb */
- memcpy(&rx_status, skb->cb, sizeof(rx_status));
- /* Clear skb->pkt_type in order to not confuse kernel
- * netstack. */
- skb->pkt_type = 0;
- __ieee80211_rx(local_to_hw(local), skb, &rx_status);
- break;
- case IEEE80211_TX_STATUS_MSG:
- /* get pointer to saved status out of skb->cb */
- memcpy(&tx_status, skb->cb, sizeof(tx_status));
- skb->pkt_type = 0;
- ieee80211_tx_status(local_to_hw(local),
- skb, tx_status);
- kfree(tx_status);
- break;
- case IEEE80211_DELBA_MSG:
- ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
- ieee80211_stop_tx_ba_cb(local_to_hw(local),
- ra_tid->ra, ra_tid->tid);
- dev_kfree_skb(skb);
- break;
- case IEEE80211_ADDBA_MSG:
- ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
- ieee80211_start_tx_ba_cb(local_to_hw(local),
- ra_tid->ra, ra_tid->tid);
- dev_kfree_skb(skb);
- break ;
- default: /* should never get here! */
- printk(KERN_ERR "%s: Unknown message type (%d)\n",
- wiphy_name(local->hw.wiphy), skb->pkt_type);
- dev_kfree_skb(skb);
- break;
- }
- }
-}
-
-/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
- * make a prepared TX frame (one that has been given to hw) to look like brand
- * new IEEE 802.11 frame that is ready to go through TX processing again.
- * Also, tx_packet_data in cb is restored from tx_control. */
-static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
- struct ieee80211_key *key,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control)
-{
- int hdrlen, iv_len, mic_len;
- struct ieee80211_tx_packet_data *pkt_data;
-
- pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
- pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex;
- pkt_data->flags = 0;
- if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
- pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
- if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
- pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
- if (control->flags & IEEE80211_TXCTL_REQUEUE)
- pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
- if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME)
- pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME;
- pkt_data->queue = control->queue;
-
- hdrlen = ieee80211_get_hdrlen_from_skb(skb);
-
- if (!key)
- goto no_key;
-
- switch (key->conf.alg) {
- case ALG_WEP:
- iv_len = WEP_IV_LEN;
- mic_len = WEP_ICV_LEN;
- break;
- case ALG_TKIP:
- iv_len = TKIP_IV_LEN;
- mic_len = TKIP_ICV_LEN;
- break;
- case ALG_CCMP:
- iv_len = CCMP_HDR_LEN;
- mic_len = CCMP_MIC_LEN;
- break;
- default:
- goto no_key;
- }
-
- if (skb->len >= mic_len &&
- !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
- skb_trim(skb, skb->len - mic_len);
- if (skb->len >= iv_len && skb->len > hdrlen) {
- memmove(skb->data + iv_len, skb->data, hdrlen);
- skb_pull(skb, iv_len);
- }
-
-no_key:
- {
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- u16 fc = le16_to_cpu(hdr->frame_control);
- if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
- fc &= ~IEEE80211_STYPE_QOS_DATA;
- hdr->frame_control = cpu_to_le16(fc);
- memmove(skb->data + 2, skb->data, hdrlen - 2);
- skb_pull(skb, 2);
- }
- }
-}
-
-static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
- struct sta_info *sta,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- sta->tx_filtered_count++;
-
- /*
- * Clear the TX filter mask for this STA when sending the next
- * packet. If the STA went to power save mode, this will happen
- * happen when it wakes up for the next time.
- */
- sta->flags |= WLAN_STA_CLEAR_PS_FILT;
-
- /*
- * This code races in the following way:
- *
- * (1) STA sends frame indicating it will go to sleep and does so
- * (2) hardware/firmware adds STA to filter list, passes frame up
- * (3) hardware/firmware processes TX fifo and suppresses a frame
- * (4) we get TX status before having processed the frame and
- * knowing that the STA has gone to sleep.
- *
- * This is actually quite unlikely even when both those events are
- * processed from interrupts coming in quickly after one another or
- * even at the same time because we queue both TX status events and
- * RX frames to be processed by a tasklet and process them in the
- * same order that they were received or TX status last. Hence, there
- * is no race as long as the frame RX is processed before the next TX
- * status, which drivers can ensure, see below.
- *
- * Note that this can only happen if the hardware or firmware can
- * actually add STAs to the filter list, if this is done by the
- * driver in response to set_tim() (which will only reduce the race
- * this whole filtering tries to solve, not completely solve it)
- * this situation cannot happen.
- *
- * To completely solve this race drivers need to make sure that they
- * (a) don't mix the irq-safe/not irq-safe TX status/RX processing
- * functions and
- * (b) always process RX events before TX status events if ordering
- * can be unknown, for example with different interrupt status
- * bits.
- */
- if (sta->flags & WLAN_STA_PS &&
- skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
- ieee80211_remove_tx_extra(local, sta->key, skb,
- &status->control);
- skb_queue_tail(&sta->tx_filtered, skb);
- return;
- }
-
- if (!(sta->flags & WLAN_STA_PS) &&
- !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
- /* Software retry the packet once */
- status->control.flags |= IEEE80211_TXCTL_REQUEUE;
- ieee80211_remove_tx_extra(local, sta->key, skb,
- &status->control);
- dev_queue_xmit(skb);
- return;
- }
-
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: dropped TX filtered frame, "
- "queue_len=%d PS=%d @%lu\n",
- wiphy_name(local->hw.wiphy),
- skb_queue_len(&sta->tx_filtered),
- !!(sta->flags & WLAN_STA_PS), jiffies);
- dev_kfree_skb(skb);
-}
-
-void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct sk_buff *skb2;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct ieee80211_local *local = hw_to_local(hw);
- u16 frag, type;
- struct ieee80211_tx_status_rtap_hdr *rthdr;
- struct ieee80211_sub_if_data *sdata;
- struct net_device *prev_dev = NULL;
-
- if (!status) {
- printk(KERN_ERR
- "%s: ieee80211_tx_status called with NULL status\n",
- wiphy_name(local->hw.wiphy));
- dev_kfree_skb(skb);
- return;
- }
-
- rcu_read_lock();
-
- if (status->excessive_retries) {
- struct sta_info *sta;
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- if (sta->flags & WLAN_STA_PS) {
- /*
- * The STA is in power save mode, so assume
- * that this TX packet failed because of that.
- */
- status->excessive_retries = 0;
- status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
- ieee80211_handle_filtered_frame(local, sta,
- skb, status);
- rcu_read_unlock();
- return;
- }
- }
- }
-
- if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
- struct sta_info *sta;
- sta = sta_info_get(local, hdr->addr1);
- if (sta) {
- ieee80211_handle_filtered_frame(local, sta, skb,
- status);
- rcu_read_unlock();
- return;
- }
- } else
- rate_control_tx_status(local->mdev, skb, status);
-
- rcu_read_unlock();
-
- ieee80211_led_tx(local, 0);
-
- /* SNMP counters
- * Fragments are passed to low-level drivers as separate skbs, so these
- * are actually fragments, not frames. Update frame counters only for
- * the first fragment of the frame. */
-
- frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
- type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
-
- if (status->flags & IEEE80211_TX_STATUS_ACK) {
- if (frag == 0) {
- local->dot11TransmittedFrameCount++;
- if (is_multicast_ether_addr(hdr->addr1))
- local->dot11MulticastTransmittedFrameCount++;
- if (status->retry_count > 0)
- local->dot11RetryCount++;
- if (status->retry_count > 1)
- local->dot11MultipleRetryCount++;
- }
-
- /* This counter shall be incremented for an acknowledged MPDU
- * with an individual address in the address 1 field or an MPDU
- * with a multicast address in the address 1 field of type Data
- * or Management. */
- if (!is_multicast_ether_addr(hdr->addr1) ||
- type == IEEE80211_FTYPE_DATA ||
- type == IEEE80211_FTYPE_MGMT)
- local->dot11TransmittedFragmentCount++;
- } else {
- if (frag == 0)
- local->dot11FailedCount++;
- }
-
- /* this was a transmitted frame, but now we want to reuse it */
- skb_orphan(skb);
-
- /*
- * This is a bit racy but we can avoid a lot of work
- * with this test...
- */
- if (!local->monitors && !local->cooked_mntrs) {
- dev_kfree_skb(skb);
- return;
- }
-
- /* send frame to monitor interfaces now */
-
- if (skb_headroom(skb) < sizeof(*rthdr)) {
- printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
- dev_kfree_skb(skb);
- return;
- }
-
- rthdr = (struct ieee80211_tx_status_rtap_hdr*)
- skb_push(skb, sizeof(*rthdr));
-
- memset(rthdr, 0, sizeof(*rthdr));
- rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
- rthdr->hdr.it_present =
- cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
- (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
-
- if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
- !is_multicast_ether_addr(hdr->addr1))
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
-
- if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
- (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
- else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
- rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
-
- rthdr->data_retries = status->retry_count;
-
- /* XXX: is this sufficient for BPF? */
- skb_set_mac_header(skb, 0);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = htons(ETH_P_802_2);
- memset(skb->cb, 0, sizeof(skb->cb));
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) {
- if (!netif_running(sdata->dev))
- continue;
-
- if (prev_dev) {
- skb2 = skb_clone(skb, GFP_ATOMIC);
- if (skb2) {
- skb2->dev = prev_dev;
- netif_rx(skb2);
- }
- }
-
- prev_dev = sdata->dev;
- }
- }
- if (prev_dev) {
- skb->dev = prev_dev;
- netif_rx(skb);
- skb = NULL;
- }
- rcu_read_unlock();
- dev_kfree_skb(skb);
-}
-EXPORT_SYMBOL(ieee80211_tx_status);
-
-struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
- const struct ieee80211_ops *ops)
-{
- struct ieee80211_local *local;
- int priv_size;
- struct wiphy *wiphy;
-
- /* Ensure 32-byte alignment of our private data and hw private data.
- * We use the wiphy priv data for both our ieee80211_local and for
- * the driver's private data
- *
- * In memory it'll be like this:
- *
- * +-------------------------+
- * | struct wiphy |
- * +-------------------------+
- * | struct ieee80211_local |
- * +-------------------------+
- * | driver's private data |
- * +-------------------------+
- *
- */
- priv_size = ((sizeof(struct ieee80211_local) +
- NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
- priv_data_len;
-
- wiphy = wiphy_new(&mac80211_config_ops, priv_size);
-
- if (!wiphy)
- return NULL;
-
- wiphy->privid = mac80211_wiphy_privid;
-
- local = wiphy_priv(wiphy);
- local->hw.wiphy = wiphy;
-
- local->hw.priv = (char *)local +
- ((sizeof(struct ieee80211_local) +
- NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
-
- BUG_ON(!ops->tx);
- BUG_ON(!ops->start);
- BUG_ON(!ops->stop);
- BUG_ON(!ops->config);
- BUG_ON(!ops->add_interface);
- BUG_ON(!ops->remove_interface);
- BUG_ON(!ops->configure_filter);
- local->ops = ops;
-
- local->hw.queues = 1; /* default */
-
- local->bridge_packets = 1;
-
- local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
- local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
- local->short_retry_limit = 7;
- local->long_retry_limit = 4;
- local->hw.conf.radio_enabled = 1;
-
- INIT_LIST_HEAD(&local->interfaces);
-
- INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
-
- sta_info_init(local);
-
- tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
- (unsigned long)local);
- tasklet_disable(&local->tx_pending_tasklet);
-
- tasklet_init(&local->tasklet,
- ieee80211_tasklet_handler,
- (unsigned long) local);
- tasklet_disable(&local->tasklet);
-
- skb_queue_head_init(&local->skb_queue);
- skb_queue_head_init(&local->skb_queue_unreliable);
-
- return local_to_hw(local);
-}
-EXPORT_SYMBOL(ieee80211_alloc_hw);
-
-int ieee80211_register_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- const char *name;
- int result;
- enum ieee80211_band band;
- struct net_device *mdev;
- struct ieee80211_sub_if_data *sdata;
-
- /*
- * generic code guarantees at least one band,
- * set this very early because much code assumes
- * that hw.conf.channel is assigned
- */
- for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
- struct ieee80211_supported_band *sband;
-
- sband = local->hw.wiphy->bands[band];
- if (sband) {
- /* init channel we're on */
- local->hw.conf.channel =
- local->oper_channel =
- local->scan_channel = &sband->channels[0];
- break;
- }
- }
-
- result = wiphy_register(local->hw.wiphy);
- if (result < 0)
- return result;
-
- /* for now, mdev needs sub_if_data :/ */
- mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
- "wmaster%d", ether_setup);
- if (!mdev)
- goto fail_mdev_alloc;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
- mdev->ieee80211_ptr = &sdata->wdev;
- sdata->wdev.wiphy = local->hw.wiphy;
-
- local->mdev = mdev;
-
- ieee80211_rx_bss_list_init(mdev);
-
- mdev->hard_start_xmit = ieee80211_master_start_xmit;
- mdev->open = ieee80211_master_open;
- mdev->stop = ieee80211_master_stop;
- mdev->type = ARPHRD_IEEE80211;
- mdev->header_ops = &ieee80211_header_ops;
- mdev->set_multicast_list = ieee80211_master_set_multicast_list;
-
- sdata->vif.type = IEEE80211_IF_TYPE_AP;
- sdata->dev = mdev;
- sdata->local = local;
- sdata->u.ap.force_unicast_rateidx = -1;
- sdata->u.ap.max_ratectrl_rateidx = -1;
- ieee80211_if_sdata_init(sdata);
-
- /* no RCU needed since we're still during init phase */
- list_add_tail(&sdata->list, &local->interfaces);
-
- name = wiphy_dev(local->hw.wiphy)->driver->name;
- local->hw.workqueue = create_singlethread_workqueue(name);
- if (!local->hw.workqueue) {
- result = -ENOMEM;
- goto fail_workqueue;
- }
-
- /*
- * The hardware needs headroom for sending the frame,
- * and we need some headroom for passing the frame to monitor
- * interfaces, but never both at the same time.
- */
- local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
- sizeof(struct ieee80211_tx_status_rtap_hdr));
-
- debugfs_hw_add(local);
-
- local->hw.conf.beacon_int = 1000;
-
- local->wstats_flags |= local->hw.max_rssi ?
- IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
- local->wstats_flags |= local->hw.max_signal ?
- IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
- local->wstats_flags |= local->hw.max_noise ?
- IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
- if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
- local->wstats_flags |= IW_QUAL_DBM;
-
- result = sta_info_start(local);
- if (result < 0)
- goto fail_sta_info;
-
- rtnl_lock();
- result = dev_alloc_name(local->mdev, local->mdev->name);
- if (result < 0)
- goto fail_dev;
-
- memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
- SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
-
- result = register_netdevice(local->mdev);
- if (result < 0)
- goto fail_dev;
-
- ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
- ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP);
-
- result = ieee80211_init_rate_ctrl_alg(local,
- hw->rate_control_algorithm);
- if (result < 0) {
- printk(KERN_DEBUG "%s: Failed to initialize rate control "
- "algorithm\n", wiphy_name(local->hw.wiphy));
- goto fail_rate;
- }
-
- result = ieee80211_wep_init(local);
-
- if (result < 0) {
- printk(KERN_DEBUG "%s: Failed to initialize wep\n",
- wiphy_name(local->hw.wiphy));
- goto fail_wep;
- }
-
- ieee80211_install_qdisc(local->mdev);
-
- /* add one default STA interface */
- result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
- IEEE80211_IF_TYPE_STA, NULL);
- if (result)
- printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
- wiphy_name(local->hw.wiphy));
-
- local->reg_state = IEEE80211_DEV_REGISTERED;
- rtnl_unlock();
-
- ieee80211_led_init(local);
-
- return 0;
-
-fail_wep:
- rate_control_deinitialize(local);
-fail_rate:
- ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
- unregister_netdevice(local->mdev);
-fail_dev:
- rtnl_unlock();
- sta_info_stop(local);
-fail_sta_info:
- debugfs_hw_del(local);
- destroy_workqueue(local->hw.workqueue);
-fail_workqueue:
- ieee80211_if_free(local->mdev);
- local->mdev = NULL;
-fail_mdev_alloc:
- wiphy_unregister(local->hw.wiphy);
- return result;
-}
-EXPORT_SYMBOL(ieee80211_register_hw);
-
-void ieee80211_unregister_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata, *tmp;
-
- tasklet_kill(&local->tx_pending_tasklet);
- tasklet_kill(&local->tasklet);
-
- rtnl_lock();
-
- BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
-
- local->reg_state = IEEE80211_DEV_UNREGISTERED;
-
- /*
- * At this point, interface list manipulations are fine
- * because the driver cannot be handing us frames any
- * more and the tasklet is killed.
- */
-
- /*
- * First, we remove all non-master interfaces. Do this because they
- * may have bss pointer dependency on the master, and when we free
- * the master these would be freed as well, breaking our list
- * iteration completely.
- */
- list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
- if (sdata->dev == local->mdev)
- continue;
- list_del(&sdata->list);
- __ieee80211_if_del(local, sdata);
- }
-
- /* then, finally, remove the master interface */
- __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev));
-
- rtnl_unlock();
-
- ieee80211_rx_bss_list_deinit(local->mdev);
- ieee80211_clear_tx_pending(local);
- sta_info_stop(local);
- rate_control_deinitialize(local);
- debugfs_hw_del(local);
-
- if (skb_queue_len(&local->skb_queue)
- || skb_queue_len(&local->skb_queue_unreliable))
- printk(KERN_WARNING "%s: skb_queue not empty\n",
- wiphy_name(local->hw.wiphy));
- skb_queue_purge(&local->skb_queue);
- skb_queue_purge(&local->skb_queue_unreliable);
-
- destroy_workqueue(local->hw.workqueue);
- wiphy_unregister(local->hw.wiphy);
- ieee80211_wep_free(local);
- ieee80211_led_exit(local);
- ieee80211_if_free(local->mdev);
- local->mdev = NULL;
-}
-EXPORT_SYMBOL(ieee80211_unregister_hw);
-
-void ieee80211_free_hw(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- wiphy_free(local->hw.wiphy);
-}
-EXPORT_SYMBOL(ieee80211_free_hw);
-
-static int __init ieee80211_init(void)
-{
- struct sk_buff *skb;
- int ret;
-
- BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
-
- ret = rc80211_pid_init();
- if (ret)
- goto out;
-
- ret = ieee80211_wme_register();
- if (ret) {
- printk(KERN_DEBUG "ieee80211_init: failed to "
- "initialize WME (err=%d)\n", ret);
- goto out_cleanup_pid;
- }
-
- ieee80211_debugfs_netdev_init();
-
- return 0;
-
- out_cleanup_pid:
- rc80211_pid_exit();
- out:
- return ret;
-}
-
-static void __exit ieee80211_exit(void)
-{
- rc80211_pid_exit();
-
- /*
- * For key todo, it'll be empty by now but the work
- * might still be scheduled.
- */
- flush_scheduled_work();
-
- if (mesh_allocated)
- ieee80211s_stop();
-
- ieee80211_wme_unregister();
- ieee80211_debugfs_netdev_exit();
-}
-
-
-subsys_initcall(ieee80211_init);
-module_exit(ieee80211_exit);
-
-MODULE_DESCRIPTION("IEEE 802.11 subsystem");
-MODULE_LICENSE("GPL");
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <net/wireless.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "sta_info.h"
/* ieee80211.o internal definitions, etc. These are not included into
+++ /dev/null
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/if_arp.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "sta_info.h"
-#include "debugfs_netdev.h"
-#include "mesh.h"
-
-void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
-{
- int i;
-
- /* Default values for sub-interface parameters */
- sdata->drop_unencrypted = 0;
- for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
- skb_queue_head_init(&sdata->fragments[i].skb_list);
-
- INIT_LIST_HEAD(&sdata->key_list);
-}
-
-static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
-{
- int i;
-
- for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
- __skb_queue_purge(&sdata->fragments[i].skb_list);
- }
-}
-
-/* Must be called with rtnl lock held. */
-int ieee80211_if_add(struct net_device *dev, const char *name,
- struct net_device **new_dev, int type,
- struct vif_params *params)
-{
- struct net_device *ndev;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = NULL;
- int ret;
-
- ASSERT_RTNL();
- ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
- name, ieee80211_if_setup);
- if (!ndev)
- return -ENOMEM;
-
- ret = dev_alloc_name(ndev, ndev->name);
- if (ret < 0)
- goto fail;
-
- memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
- ndev->base_addr = dev->base_addr;
- ndev->irq = dev->irq;
- ndev->mem_start = dev->mem_start;
- ndev->mem_end = dev->mem_end;
- SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
-
- sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
- ndev->ieee80211_ptr = &sdata->wdev;
- sdata->wdev.wiphy = local->hw.wiphy;
- sdata->vif.type = IEEE80211_IF_TYPE_AP;
- sdata->dev = ndev;
- sdata->local = local;
- ieee80211_if_sdata_init(sdata);
-
- ret = register_netdevice(ndev);
- if (ret)
- goto fail;
-
- ieee80211_debugfs_add_netdev(sdata);
- ieee80211_if_set_type(ndev, type);
-
- if (ieee80211_vif_is_mesh(&sdata->vif) &&
- params && params->mesh_id_len)
- ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
- params->mesh_id_len,
- params->mesh_id);
-
- /* we're under RTNL so all this is fine */
- if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
- __ieee80211_if_del(local, sdata);
- return -ENODEV;
- }
- list_add_tail_rcu(&sdata->list, &local->interfaces);
-
- if (new_dev)
- *new_dev = ndev;
-
- return 0;
-
-fail:
- free_netdev(ndev);
- return ret;
-}
-
-void ieee80211_if_set_type(struct net_device *dev, int type)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int oldtype = sdata->vif.type;
-
- /*
- * We need to call this function on the master interface
- * which already has a hard_start_xmit routine assigned
- * which must not be changed.
- */
- if (dev != sdata->local->mdev)
- dev->hard_start_xmit = ieee80211_subif_start_xmit;
-
- /*
- * Called even when register_netdevice fails, it would
- * oops if assigned before initialising the rest.
- */
- dev->uninit = ieee80211_if_reinit;
-
- /* most have no BSS pointer */
- sdata->bss = NULL;
- sdata->vif.type = type;
-
- sdata->basic_rates = 0;
-
- switch (type) {
- case IEEE80211_IF_TYPE_WDS:
- /* nothing special */
- break;
- case IEEE80211_IF_TYPE_VLAN:
- sdata->u.vlan.ap = NULL;
- break;
- case IEEE80211_IF_TYPE_AP:
- sdata->u.ap.force_unicast_rateidx = -1;
- sdata->u.ap.max_ratectrl_rateidx = -1;
- skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
- sdata->bss = &sdata->u.ap;
- INIT_LIST_HEAD(&sdata->u.ap.vlans);
- break;
- case IEEE80211_IF_TYPE_MESH_POINT:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS: {
- struct ieee80211_sub_if_data *msdata;
- struct ieee80211_if_sta *ifsta;
-
- ifsta = &sdata->u.sta;
- INIT_WORK(&ifsta->work, ieee80211_sta_work);
- setup_timer(&ifsta->timer, ieee80211_sta_timer,
- (unsigned long) sdata);
- skb_queue_head_init(&ifsta->skb_queue);
-
- ifsta->capab = WLAN_CAPABILITY_ESS;
- ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
- IEEE80211_AUTH_ALG_SHARED_KEY;
- ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
- IEEE80211_STA_WMM_ENABLED |
- IEEE80211_STA_AUTO_BSSID_SEL |
- IEEE80211_STA_AUTO_CHANNEL_SEL;
-
- msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
- sdata->bss = &msdata->u.ap;
-
- if (ieee80211_vif_is_mesh(&sdata->vif))
- ieee80211_mesh_init_sdata(sdata);
- break;
- }
- case IEEE80211_IF_TYPE_MNTR:
- dev->type = ARPHRD_IEEE80211_RADIOTAP;
- dev->hard_start_xmit = ieee80211_monitor_start_xmit;
- sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
- MONITOR_FLAG_OTHER_BSS;
- break;
- default:
- printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
- dev->name, __func__, type);
- }
- ieee80211_debugfs_change_if_type(sdata, oldtype);
-}
-
-/* Must be called with rtnl lock held. */
-void ieee80211_if_reinit(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sk_buff *skb;
- int flushed;
-
- ASSERT_RTNL();
-
- ieee80211_free_keys(sdata);
-
- ieee80211_if_sdata_deinit(sdata);
-
- /* Need to handle mesh specially to allow eliding the function call */
- if (ieee80211_vif_is_mesh(&sdata->vif))
- mesh_rmc_free(dev);
-
- switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_INVALID:
- /* cannot happen */
- WARN_ON(1);
- break;
- case IEEE80211_IF_TYPE_AP: {
- /* Remove all virtual interfaces that use this BSS
- * as their sdata->bss */
- struct ieee80211_sub_if_data *tsdata, *n;
- struct beacon_data *beacon;
-
- list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
- if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
- printk(KERN_DEBUG "%s: removing virtual "
- "interface %s because its BSS interface"
- " is being removed\n",
- sdata->dev->name, tsdata->dev->name);
- list_del_rcu(&tsdata->list);
- /*
- * We have lots of time and can afford
- * to sync for each interface
- */
- synchronize_rcu();
- __ieee80211_if_del(local, tsdata);
- }
- }
-
- beacon = sdata->u.ap.beacon;
- rcu_assign_pointer(sdata->u.ap.beacon, NULL);
- synchronize_rcu();
- kfree(beacon);
-
- while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
- local->total_ps_buffered--;
- dev_kfree_skb(skb);
- }
-
- break;
- }
- case IEEE80211_IF_TYPE_WDS:
- /* nothing to do */
- break;
- case IEEE80211_IF_TYPE_MESH_POINT:
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- kfree(sdata->u.sta.extra_ie);
- sdata->u.sta.extra_ie = NULL;
- kfree(sdata->u.sta.assocreq_ies);
- sdata->u.sta.assocreq_ies = NULL;
- kfree(sdata->u.sta.assocresp_ies);
- sdata->u.sta.assocresp_ies = NULL;
- if (sdata->u.sta.probe_resp) {
- dev_kfree_skb(sdata->u.sta.probe_resp);
- sdata->u.sta.probe_resp = NULL;
- }
-
- break;
- case IEEE80211_IF_TYPE_MNTR:
- dev->type = ARPHRD_ETHER;
- break;
- case IEEE80211_IF_TYPE_VLAN:
- sdata->u.vlan.ap = NULL;
- break;
- }
-
- flushed = sta_info_flush(local, sdata);
- WARN_ON(flushed);
-
- memset(&sdata->u, 0, sizeof(sdata->u));
- ieee80211_if_sdata_init(sdata);
-}
-
-/* Must be called with rtnl lock held. */
-void __ieee80211_if_del(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata)
-{
- struct net_device *dev = sdata->dev;
-
- ieee80211_debugfs_remove_netdev(sdata);
- unregister_netdevice(dev);
- /* Except master interface, the net_device will be freed by
- * net_device->destructor (i. e. ieee80211_if_free). */
-}
-
-/* Must be called with rtnl lock held. */
-int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata, *n;
-
- ASSERT_RTNL();
-
- list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
- if ((sdata->vif.type == id || id == -1) &&
- strcmp(name, sdata->dev->name) == 0 &&
- sdata->dev != local->mdev) {
- list_del_rcu(&sdata->list);
- synchronize_rcu();
- __ieee80211_if_del(local, sdata);
- return 0;
- }
- }
- return -ENODEV;
-}
-
-void ieee80211_if_free(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- ieee80211_if_sdata_deinit(sdata);
- free_netdev(dev);
-}
+++ /dev/null
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <net/iw_handler.h>
-#include <asm/uaccess.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "ieee80211_led.h"
-#include "ieee80211_rate.h"
-#include "wpa.h"
-#include "aes_ccm.h"
-
-
-static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
- int idx, int alg, int remove,
- int set_tx_key, const u8 *_key,
- size_t key_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- struct ieee80211_key *key;
- struct ieee80211_sub_if_data *sdata;
- int err;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
- printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
- dev->name, idx);
- return -EINVAL;
- }
-
- if (remove) {
- rcu_read_lock();
-
- err = 0;
-
- if (is_broadcast_ether_addr(sta_addr)) {
- key = sdata->keys[idx];
- } else {
- sta = sta_info_get(local, sta_addr);
- if (!sta) {
- err = -ENOENT;
- goto out_unlock;
- }
- key = sta->key;
- }
-
- ieee80211_key_free(key);
- } else {
- key = ieee80211_key_alloc(alg, idx, key_len, _key);
- if (!key)
- return -ENOMEM;
-
- sta = NULL;
- err = 0;
-
- rcu_read_lock();
-
- if (!is_broadcast_ether_addr(sta_addr)) {
- set_tx_key = 0;
- /*
- * According to the standard, the key index of a
- * pairwise key must be zero. However, some AP are
- * broken when it comes to WEP key indices, so we
- * work around this.
- */
- if (idx != 0 && alg != ALG_WEP) {
- ieee80211_key_free(key);
- err = -EINVAL;
- goto out_unlock;
- }
-
- sta = sta_info_get(local, sta_addr);
- if (!sta) {
- ieee80211_key_free(key);
- err = -ENOENT;
- goto out_unlock;
- }
- }
-
- ieee80211_key_link(key, sdata, sta);
-
- if (set_tx_key || (!sta && !sdata->default_key && key))
- ieee80211_set_default_key(sdata, idx);
- }
-
- out_unlock:
- rcu_read_unlock();
-
- return err;
-}
-
-static int ieee80211_ioctl_siwgenie(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
- return -EOPNOTSUPP;
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
- if (ret)
- return ret;
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- }
-
- return -EOPNOTSUPP;
-}
-
-static int ieee80211_ioctl_giwname(struct net_device *dev,
- struct iw_request_info *info,
- char *name, char *extra)
-{
- strcpy(name, "IEEE 802.11");
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwrange(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_range *range = (struct iw_range *) extra;
- enum ieee80211_band band;
- int c = 0;
-
- data->length = sizeof(struct iw_range);
- memset(range, 0, sizeof(struct iw_range));
-
- range->we_version_compiled = WIRELESS_EXT;
- range->we_version_source = 21;
- range->retry_capa = IW_RETRY_LIMIT;
- range->retry_flags = IW_RETRY_LIMIT;
- range->min_retry = 0;
- range->max_retry = 255;
- range->min_rts = 0;
- range->max_rts = 2347;
- range->min_frag = 256;
- range->max_frag = 2346;
-
- range->encoding_size[0] = 5;
- range->encoding_size[1] = 13;
- range->num_encoding_sizes = 2;
- range->max_encoding_tokens = NUM_DEFAULT_KEYS;
-
- range->max_qual.qual = local->hw.max_signal;
- range->max_qual.level = local->hw.max_rssi;
- range->max_qual.noise = local->hw.max_noise;
- range->max_qual.updated = local->wstats_flags;
-
- range->avg_qual.qual = local->hw.max_signal/2;
- range->avg_qual.level = 0;
- range->avg_qual.noise = 0;
- range->avg_qual.updated = local->wstats_flags;
-
- range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
- IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
-
-
- for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
- int i;
- struct ieee80211_supported_band *sband;
-
- sband = local->hw.wiphy->bands[band];
-
- if (!sband)
- continue;
-
- for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
- struct ieee80211_channel *chan = &sband->channels[i];
-
- if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
- range->freq[c].i =
- ieee80211_frequency_to_channel(
- chan->center_freq);
- range->freq[c].m = chan->center_freq;
- range->freq[c].e = 6;
- c++;
- }
- }
- }
- range->num_channels = c;
- range->num_frequency = c;
-
- IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
- IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
-
- range->scan_capa |= IW_SCAN_CAPA_ESSID;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwmode(struct net_device *dev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int type;
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
- return -EOPNOTSUPP;
-
- switch (*mode) {
- case IW_MODE_INFRA:
- type = IEEE80211_IF_TYPE_STA;
- break;
- case IW_MODE_ADHOC:
- type = IEEE80211_IF_TYPE_IBSS;
- break;
- case IW_MODE_MONITOR:
- type = IEEE80211_IF_TYPE_MNTR;
- break;
- default:
- return -EINVAL;
- }
-
- if (type == sdata->vif.type)
- return 0;
- if (netif_running(dev))
- return -EBUSY;
-
- ieee80211_if_reinit(dev);
- ieee80211_if_set_type(dev, type);
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwmode(struct net_device *dev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- switch (sdata->vif.type) {
- case IEEE80211_IF_TYPE_AP:
- *mode = IW_MODE_MASTER;
- break;
- case IEEE80211_IF_TYPE_STA:
- *mode = IW_MODE_INFRA;
- break;
- case IEEE80211_IF_TYPE_IBSS:
- *mode = IW_MODE_ADHOC;
- break;
- case IEEE80211_IF_TYPE_MNTR:
- *mode = IW_MODE_MONITOR;
- break;
- case IEEE80211_IF_TYPE_WDS:
- *mode = IW_MODE_REPEAT;
- break;
- case IEEE80211_IF_TYPE_VLAN:
- *mode = IW_MODE_SECOND; /* FIXME */
- break;
- default:
- *mode = IW_MODE_AUTO;
- break;
- }
- return 0;
-}
-
-int ieee80211_set_freq(struct ieee80211_local *local, int freqMHz)
-{
- int ret = -EINVAL;
- struct ieee80211_channel *chan;
-
- chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
-
- if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
- local->oper_channel = chan;
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- ret = 0;
- else
- ret = ieee80211_hw_config(local);
-
- rate_control_clear(local);
- }
-
- return ret;
-}
-
-static int ieee80211_ioctl_siwfreq(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
-
- /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
- if (freq->e == 0) {
- if (freq->m < 0) {
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
- sdata->u.sta.flags |=
- IEEE80211_STA_AUTO_CHANNEL_SEL;
- return 0;
- } else
- return ieee80211_set_freq(local,
- ieee80211_channel_to_frequency(freq->m));
- } else {
- int i, div = 1000000;
- for (i = 0; i < freq->e; i++)
- div /= 10;
- if (div > 0)
- return ieee80211_set_freq(local, freq->m / div);
- else
- return -EINVAL;
- }
-}
-
-
-static int ieee80211_ioctl_giwfreq(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- freq->m = local->hw.conf.channel->center_freq;
- freq->e = 6;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwessid(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *ssid)
-{
- struct ieee80211_sub_if_data *sdata;
- size_t len = data->length;
-
- /* iwconfig uses nul termination in SSID.. */
- if (len > 0 && ssid[len - 1] == '\0')
- len--;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- int ret;
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
- if (len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
- memcpy(sdata->u.sta.ssid, ssid, len);
- sdata->u.sta.ssid_len = len;
- return 0;
- }
- if (data->flags)
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
- else
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
- ret = ieee80211_sta_set_ssid(dev, ssid, len);
- if (ret)
- return ret;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- }
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
- memcpy(sdata->u.ap.ssid, ssid, len);
- memset(sdata->u.ap.ssid + len, 0,
- IEEE80211_MAX_SSID_LEN - len);
- sdata->u.ap.ssid_len = len;
- return ieee80211_if_config(dev);
- }
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_giwessid(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *ssid)
-{
- size_t len;
-
- struct ieee80211_sub_if_data *sdata;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- int res = ieee80211_sta_get_ssid(dev, ssid, &len);
- if (res == 0) {
- data->length = len;
- data->flags = 1;
- } else
- data->flags = 0;
- return res;
- }
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
- len = sdata->u.ap.ssid_len;
- if (len > IW_ESSID_MAX_SIZE)
- len = IW_ESSID_MAX_SIZE;
- memcpy(ssid, sdata->u.ap.ssid, len);
- data->length = len;
- data->flags = 1;
- return 0;
- }
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_siwap(struct net_device *dev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- int ret;
- if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
- memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
- ETH_ALEN);
- return 0;
- }
- if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
- IEEE80211_STA_AUTO_CHANNEL_SEL;
- else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
- sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
- else
- sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
- ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
- if (ret)
- return ret;
- ieee80211_sta_req_auth(dev, &sdata->u.sta);
- return 0;
- } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
- /*
- * If it is necessary to update the WDS peer address
- * while the interface is running, then we need to do
- * more work here, namely if it is running we need to
- * add a new and remove the old STA entry, this is
- * normally handled by _open() and _stop().
- */
- if (netif_running(dev))
- return -EBUSY;
-
- memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
- ETH_ALEN);
-
- return 0;
- }
-
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_giwap(struct net_device *dev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- ap_addr->sa_family = ARPHRD_ETHER;
- memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
- return 0;
- } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
- ap_addr->sa_family = ARPHRD_ETHER;
- memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
- return 0;
- }
-
- return -EOPNOTSUPP;
-}
-
-
-static int ieee80211_ioctl_siwscan(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct iw_scan_req *req = NULL;
- u8 *ssid = NULL;
- size_t ssid_len = 0;
-
- if (!netif_running(dev))
- return -ENETDOWN;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
- sdata->vif.type != IEEE80211_IF_TYPE_AP)
- return -EOPNOTSUPP;
-
- /* if SSID was specified explicitly then use that */
- if (wrqu->data.length == sizeof(struct iw_scan_req) &&
- wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- req = (struct iw_scan_req *)extra;
- ssid = req->essid;
- ssid_len = req->essid_len;
- }
-
- return ieee80211_sta_req_scan(dev, ssid, ssid_len);
-}
-
-
-static int ieee80211_ioctl_giwscan(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- int res;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return -EAGAIN;
-
- res = ieee80211_sta_scan_results(dev, extra, data->length);
- if (res >= 0) {
- data->length = res;
- return 0;
- }
- data->length = 0;
- return res;
-}
-
-
-static int ieee80211_ioctl_siwrate(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rate, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int i, err = -EINVAL;
- u32 target_rate = rate->value / 100000;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_supported_band *sband;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (!sdata->bss)
- return -ENODEV;
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
- * target_rate = X, rate->fixed = 1 means only rate X
- * target_rate = X, rate->fixed = 0 means all rates <= X */
- sdata->bss->max_ratectrl_rateidx = -1;
- sdata->bss->force_unicast_rateidx = -1;
- if (rate->value < 0)
- return 0;
-
- for (i=0; i< sband->n_bitrates; i++) {
- struct ieee80211_rate *brate = &sband->bitrates[i];
- int this_rate = brate->bitrate;
-
- if (target_rate == this_rate) {
- sdata->bss->max_ratectrl_rateidx = i;
- if (rate->fixed)
- sdata->bss->force_unicast_rateidx = i;
- err = 0;
- break;
- }
- }
- return err;
-}
-
-static int ieee80211_ioctl_giwrate(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rate, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_supported_band *sband;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return -EOPNOTSUPP;
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- rcu_read_lock();
-
- sta = sta_info_get(local, sdata->u.sta.bssid);
-
- if (sta && sta->txrate_idx < sband->n_bitrates)
- rate->value = sband->bitrates[sta->txrate_idx].bitrate;
- else
- rate->value = 0;
-
- rcu_read_unlock();
-
- if (!sta)
- return -ENODEV;
-
- rate->value *= 100000;
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- bool need_reconfig = 0;
- int new_power_level;
-
- if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
- return -EINVAL;
- if (data->txpower.flags & IW_TXPOW_RANGE)
- return -EINVAL;
-
- if (data->txpower.fixed) {
- new_power_level = data->txpower.value;
- } else {
- /*
- * Automatic power level. Use maximum power for the current
- * channel. Should be part of rate control.
- */
- struct ieee80211_channel* chan = local->hw.conf.channel;
- if (!chan)
- return -EINVAL;
-
- new_power_level = chan->max_power;
- }
-
- if (local->hw.conf.power_level != new_power_level) {
- local->hw.conf.power_level = new_power_level;
- need_reconfig = 1;
- }
-
- if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
- local->hw.conf.radio_enabled = !(data->txpower.disabled);
- need_reconfig = 1;
- ieee80211_led_radio(local, local->hw.conf.radio_enabled);
- }
-
- if (need_reconfig) {
- ieee80211_hw_config(local);
- /* The return value of hw_config is not of big interest here,
- * as it doesn't say that it failed because of _this_ config
- * change or something else. Ignore it. */
- }
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *data, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- data->txpower.fixed = 1;
- data->txpower.disabled = !(local->hw.conf.radio_enabled);
- data->txpower.value = local->hw.conf.power_level;
- data->txpower.flags = IW_TXPOW_DBM;
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwrts(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (rts->disabled)
- local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
- else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
- return -EINVAL;
- else
- local->rts_threshold = rts->value;
-
- /* If the wlan card performs RTS/CTS in hardware/firmware,
- * configure it here */
-
- if (local->ops->set_rts_threshold)
- local->ops->set_rts_threshold(local_to_hw(local),
- local->rts_threshold);
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwrts(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- rts->value = local->rts_threshold;
- rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
- rts->fixed = 1;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwfrag(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (frag->disabled)
- local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
- else if (frag->value < 256 ||
- frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
- return -EINVAL;
- else {
- /* Fragment length must be even, so strip LSB. */
- local->fragmentation_threshold = frag->value & ~0x1;
- }
-
- /* If the wlan card performs fragmentation in hardware/firmware,
- * configure it here */
-
- if (local->ops->set_frag_threshold)
- local->ops->set_frag_threshold(
- local_to_hw(local),
- local->fragmentation_threshold);
-
- return 0;
-}
-
-static int ieee80211_ioctl_giwfrag(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- frag->value = local->fragmentation_threshold;
- frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
- frag->fixed = 1;
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_siwretry(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (retry->disabled ||
- (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
- return -EINVAL;
-
- if (retry->flags & IW_RETRY_MAX)
- local->long_retry_limit = retry->value;
- else if (retry->flags & IW_RETRY_MIN)
- local->short_retry_limit = retry->value;
- else {
- local->long_retry_limit = retry->value;
- local->short_retry_limit = retry->value;
- }
-
- if (local->ops->set_retry_limit) {
- return local->ops->set_retry_limit(
- local_to_hw(local),
- local->short_retry_limit,
- local->long_retry_limit);
- }
-
- return 0;
-}
-
-
-static int ieee80211_ioctl_giwretry(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- retry->disabled = 0;
- if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
- /* first return min value, iwconfig will ask max value
- * later if needed */
- retry->flags |= IW_RETRY_LIMIT;
- retry->value = local->short_retry_limit;
- if (local->long_retry_limit != local->short_retry_limit)
- retry->flags |= IW_RETRY_MIN;
- return 0;
- }
- if (retry->flags & IW_RETRY_MAX) {
- retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
- retry->value = local->long_retry_limit;
- }
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwmlme(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata;
- struct iw_mlme *mlme = (struct iw_mlme *) extra;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
- return -EINVAL;
-
- switch (mlme->cmd) {
- case IW_MLME_DEAUTH:
- /* TODO: mlme->addr.sa_data */
- return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
- case IW_MLME_DISASSOC:
- /* TODO: mlme->addr.sa_data */
- return ieee80211_sta_disassociate(dev, mlme->reason_code);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-
-static int ieee80211_ioctl_siwencode(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *keybuf)
-{
- struct ieee80211_sub_if_data *sdata;
- int idx, i, alg = ALG_WEP;
- u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
- int remove = 0;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx == 0) {
- if (sdata->default_key)
- for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- } else if (idx < 1 || idx > 4)
- return -EINVAL;
- else
- idx--;
-
- if (erq->flags & IW_ENCODE_DISABLED)
- remove = 1;
- else if (erq->length == 0) {
- /* No key data - just set the default TX key index */
- ieee80211_set_default_key(sdata, idx);
- return 0;
- }
-
- return ieee80211_set_encryption(
- dev, bcaddr,
- idx, alg, remove,
- !sdata->default_key,
- keybuf, erq->length);
-}
-
-
-static int ieee80211_ioctl_giwencode(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *key)
-{
- struct ieee80211_sub_if_data *sdata;
- int idx, i;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx < 1 || idx > 4) {
- idx = -1;
- if (!sdata->default_key)
- idx = 0;
- else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- if (idx < 0)
- return -EINVAL;
- } else
- idx--;
-
- erq->flags = idx + 1;
-
- if (!sdata->keys[idx]) {
- erq->length = 0;
- erq->flags |= IW_ENCODE_DISABLED;
- return 0;
- }
-
- memcpy(key, sdata->keys[idx]->conf.key,
- min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
- erq->length = sdata->keys[idx]->conf.keylen;
- erq->flags |= IW_ENCODE_ENABLED;
-
- return 0;
-}
-
-static int ieee80211_ioctl_siwauth(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int ret = 0;
-
- switch (data->flags & IW_AUTH_INDEX) {
- case IW_AUTH_WPA_VERSION:
- case IW_AUTH_CIPHER_PAIRWISE:
- case IW_AUTH_CIPHER_GROUP:
- case IW_AUTH_WPA_ENABLED:
- case IW_AUTH_RX_UNENCRYPTED_EAPOL:
- case IW_AUTH_KEY_MGMT:
- break;
- case IW_AUTH_DROP_UNENCRYPTED:
- sdata->drop_unencrypted = !!data->value;
- break;
- case IW_AUTH_PRIVACY_INVOKED:
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- ret = -EINVAL;
- else {
- sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
- /*
- * Privacy invoked by wpa_supplicant, store the
- * value and allow associating to a protected
- * network without having a key up front.
- */
- if (data->value)
- sdata->u.sta.flags |=
- IEEE80211_STA_PRIVACY_INVOKED;
- }
- break;
- case IW_AUTH_80211_AUTH_ALG:
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
- sdata->u.sta.auth_algs = data->value;
- else
- ret = -EOPNOTSUPP;
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
- return ret;
-}
-
-/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
-static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_statistics *wstats = &local->wstats;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sta_info *sta = NULL;
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
- sta = sta_info_get(local, sdata->u.sta.bssid);
- if (!sta) {
- wstats->discard.fragment = 0;
- wstats->discard.misc = 0;
- wstats->qual.qual = 0;
- wstats->qual.level = 0;
- wstats->qual.noise = 0;
- wstats->qual.updated = IW_QUAL_ALL_INVALID;
- } else {
- wstats->qual.level = sta->last_rssi;
- wstats->qual.qual = sta->last_signal;
- wstats->qual.noise = sta->last_noise;
- wstats->qual.updated = local->wstats_flags;
- }
- return wstats;
-}
-
-static int ieee80211_ioctl_giwauth(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_param *data, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int ret = 0;
-
- switch (data->flags & IW_AUTH_INDEX) {
- case IW_AUTH_80211_AUTH_ALG:
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
- data->value = sdata->u.sta.auth_algs;
- else
- ret = -EOPNOTSUPP;
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
- return ret;
-}
-
-
-static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
- struct iw_request_info *info,
- struct iw_point *erq, char *extra)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
- int uninitialized_var(alg), idx, i, remove = 0;
-
- switch (ext->alg) {
- case IW_ENCODE_ALG_NONE:
- remove = 1;
- break;
- case IW_ENCODE_ALG_WEP:
- alg = ALG_WEP;
- break;
- case IW_ENCODE_ALG_TKIP:
- alg = ALG_TKIP;
- break;
- case IW_ENCODE_ALG_CCMP:
- alg = ALG_CCMP;
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- if (erq->flags & IW_ENCODE_DISABLED)
- remove = 1;
-
- idx = erq->flags & IW_ENCODE_INDEX;
- if (idx < 1 || idx > 4) {
- idx = -1;
- if (!sdata->default_key)
- idx = 0;
- else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
- if (sdata->default_key == sdata->keys[i]) {
- idx = i;
- break;
- }
- }
- if (idx < 0)
- return -EINVAL;
- } else
- idx--;
-
- return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
- remove,
- ext->ext_flags &
- IW_ENCODE_EXT_SET_TX_KEY,
- ext->key, ext->key_len);
-}
-
-
-/* Structures to export the Wireless Handlers */
-
-static const iw_handler ieee80211_handler[] =
-{
- (iw_handler) NULL, /* SIOCSIWCOMMIT */
- (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
- (iw_handler) NULL, /* SIOCSIWNWID */
- (iw_handler) NULL, /* SIOCGIWNWID */
- (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
- (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
- (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
- (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
- (iw_handler) NULL, /* SIOCSIWSENS */
- (iw_handler) NULL, /* SIOCGIWSENS */
- (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
- (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
- (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
- (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
- (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
- (iw_handler) NULL, /* SIOCSIWSPY */
- (iw_handler) NULL, /* SIOCGIWSPY */
- (iw_handler) NULL, /* SIOCSIWTHRSPY */
- (iw_handler) NULL, /* SIOCGIWTHRSPY */
- (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
- (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
- (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
- (iw_handler) NULL, /* SIOCGIWAPLIST */
- (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
- (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
- (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
- (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
- (iw_handler) NULL, /* SIOCSIWNICKN */
- (iw_handler) NULL, /* SIOCGIWNICKN */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
- (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
- (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
- (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
- (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
- (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
- (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
- (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
- (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
- (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
- (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
- (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
- (iw_handler) NULL, /* SIOCSIWPOWER */
- (iw_handler) NULL, /* SIOCGIWPOWER */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) NULL, /* -- hole -- */
- (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
- (iw_handler) NULL, /* SIOCGIWGENIE */
- (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
- (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
- (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
- (iw_handler) NULL, /* SIOCGIWENCODEEXT */
- (iw_handler) NULL, /* SIOCSIWPMKSA */
- (iw_handler) NULL, /* -- hole -- */
-};
-
-const struct iw_handler_def ieee80211_iw_handler_def =
-{
- .num_standard = ARRAY_SIZE(ieee80211_handler),
- .standard = (iw_handler *) ieee80211_handler,
- .get_wireless_stats = ieee80211_get_wireless_stats,
-};
+++ /dev/null
-/*
- * Copyright 2002-2004, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef IEEE80211_KEY_H
-#define IEEE80211_KEY_H
-
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/crypto.h>
-#include <linux/rcupdate.h>
-#include <net/mac80211.h>
-
-/* ALG_TKIP
- * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
- * Temporal Encryption Key (128 bits)
- * Temporal Authenticator Tx MIC Key (64 bits)
- * Temporal Authenticator Rx MIC Key (64 bits)
- */
-
-#define WEP_IV_LEN 4
-#define WEP_ICV_LEN 4
-
-#define ALG_TKIP_KEY_LEN 32
-/* Starting offsets for each key */
-#define ALG_TKIP_TEMP_ENCR_KEY 0
-#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
-#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
-#define TKIP_IV_LEN 8
-#define TKIP_ICV_LEN 4
-
-#define ALG_CCMP_KEY_LEN 16
-#define CCMP_HDR_LEN 8
-#define CCMP_MIC_LEN 8
-#define CCMP_TK_LEN 16
-#define CCMP_PN_LEN 6
-
-#define NUM_RX_DATA_QUEUES 17
-
-struct ieee80211_local;
-struct ieee80211_sub_if_data;
-struct sta_info;
-
-/**
- * enum ieee80211_internal_key_flags - internal key flags
- *
- * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
- * in the hardware for TX crypto hardware acceleration.
- * @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an
- * RCU grace period, no longer be reachable other than from the
- * todo list.
- * @KEY_FLAG_TODO_HWACCEL: Key needs to be added to hardware acceleration.
- * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated.
- * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs.
- */
-enum ieee80211_internal_key_flags {
- KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
- KEY_FLAG_TODO_DELETE = BIT(1),
- KEY_FLAG_TODO_HWACCEL = BIT(2),
- KEY_FLAG_TODO_DEFKEY = BIT(3),
- KEY_FLAG_TODO_ADD_DEBUGFS = BIT(4),
-};
-
-struct ieee80211_key {
- struct ieee80211_local *local;
- struct ieee80211_sub_if_data *sdata;
- struct sta_info *sta;
-
- /* for sdata list */
- struct list_head list;
- /* for todo list */
- struct list_head todo;
-
- /* protected by todo lock! */
- unsigned int flags;
-
- union {
- struct {
- /* last used TSC */
- u32 iv32;
- u16 iv16;
- u16 p1k[5];
- int tx_initialized;
-
- /* last received RSC */
- u32 iv32_rx[NUM_RX_DATA_QUEUES];
- u16 iv16_rx[NUM_RX_DATA_QUEUES];
- u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
- int rx_initialized[NUM_RX_DATA_QUEUES];
- } tkip;
- struct {
- u8 tx_pn[6];
- u8 rx_pn[NUM_RX_DATA_QUEUES][6];
- struct crypto_cipher *tfm;
- u32 replays; /* dot11RSNAStatsCCMPReplays */
- /* scratch buffers for virt_to_page() (crypto API) */
-#ifndef AES_BLOCK_LEN
-#define AES_BLOCK_LEN 16
-#endif
- u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
- u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
- } ccmp;
- } u;
-
- /* number of times this key has been used */
- int tx_rx_count;
-
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct {
- struct dentry *stalink;
- struct dentry *dir;
- struct dentry *keylen;
- struct dentry *flags;
- struct dentry *keyidx;
- struct dentry *hw_key_idx;
- struct dentry *tx_rx_count;
- struct dentry *algorithm;
- struct dentry *tx_spec;
- struct dentry *rx_spec;
- struct dentry *replays;
- struct dentry *key;
- struct dentry *ifindex;
- } debugfs;
-#endif
-
- /*
- * key config, must be last because it contains key
- * material as variable length member
- */
- struct ieee80211_key_conf conf;
-};
-
-struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
- int idx,
- size_t key_len,
- const u8 *key_data);
-/*
- * Insert a key into data structures (sdata, sta if necessary)
- * to make it used, free old key.
- */
-void ieee80211_key_link(struct ieee80211_key *key,
- struct ieee80211_sub_if_data *sdata,
- struct sta_info *sta);
-void ieee80211_key_free(struct ieee80211_key *key);
-void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
-void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
-void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
-void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
-
-void ieee80211_key_todo(void);
-
-#endif /* IEEE80211_KEY_H */
+++ /dev/null
-/*
- * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* just for IFNAMSIZ */
-#include <linux/if.h>
-#include "ieee80211_led.h"
-
-void ieee80211_led_rx(struct ieee80211_local *local)
-{
- if (unlikely(!local->rx_led))
- return;
- if (local->rx_led_counter++ % 2 == 0)
- led_trigger_event(local->rx_led, LED_OFF);
- else
- led_trigger_event(local->rx_led, LED_FULL);
-}
-
-/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
-void ieee80211_led_tx(struct ieee80211_local *local, int q)
-{
- if (unlikely(!local->tx_led))
- return;
- /* not sure how this is supposed to work ... */
- local->tx_led_counter += 2*q-1;
- if (local->tx_led_counter % 2 == 0)
- led_trigger_event(local->tx_led, LED_OFF);
- else
- led_trigger_event(local->tx_led, LED_FULL);
-}
-
-void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
-{
- if (unlikely(!local->assoc_led))
- return;
- if (associated)
- led_trigger_event(local->assoc_led, LED_FULL);
- else
- led_trigger_event(local->assoc_led, LED_OFF);
-}
-
-void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
-{
- if (unlikely(!local->radio_led))
- return;
- if (enabled)
- led_trigger_event(local->radio_led, LED_FULL);
- else
- led_trigger_event(local->radio_led, LED_OFF);
-}
-
-void ieee80211_led_init(struct ieee80211_local *local)
-{
- local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->rx_led) {
- snprintf(local->rx_led_name, sizeof(local->rx_led_name),
- "%srx", wiphy_name(local->hw.wiphy));
- local->rx_led->name = local->rx_led_name;
- if (led_trigger_register(local->rx_led)) {
- kfree(local->rx_led);
- local->rx_led = NULL;
- }
- }
-
- local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->tx_led) {
- snprintf(local->tx_led_name, sizeof(local->tx_led_name),
- "%stx", wiphy_name(local->hw.wiphy));
- local->tx_led->name = local->tx_led_name;
- if (led_trigger_register(local->tx_led)) {
- kfree(local->tx_led);
- local->tx_led = NULL;
- }
- }
-
- local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->assoc_led) {
- snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
- "%sassoc", wiphy_name(local->hw.wiphy));
- local->assoc_led->name = local->assoc_led_name;
- if (led_trigger_register(local->assoc_led)) {
- kfree(local->assoc_led);
- local->assoc_led = NULL;
- }
- }
-
- local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
- if (local->radio_led) {
- snprintf(local->radio_led_name, sizeof(local->radio_led_name),
- "%sradio", wiphy_name(local->hw.wiphy));
- local->radio_led->name = local->radio_led_name;
- if (led_trigger_register(local->radio_led)) {
- kfree(local->radio_led);
- local->radio_led = NULL;
- }
- }
-}
-
-void ieee80211_led_exit(struct ieee80211_local *local)
-{
- if (local->radio_led) {
- led_trigger_unregister(local->radio_led);
- kfree(local->radio_led);
- }
- if (local->assoc_led) {
- led_trigger_unregister(local->assoc_led);
- kfree(local->assoc_led);
- }
- if (local->tx_led) {
- led_trigger_unregister(local->tx_led);
- kfree(local->tx_led);
- }
- if (local->rx_led) {
- led_trigger_unregister(local->rx_led);
- kfree(local->rx_led);
- }
-}
-
-char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->radio_led)
- return local->radio_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
-
-char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->assoc_led)
- return local->assoc_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
-
-char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->tx_led)
- return local->tx_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
-
-char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (local->rx_led)
- return local->rx_led_name;
- return NULL;
-}
-EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
+++ /dev/null
-/*
- * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <linux/leds.h>
-#include "ieee80211_i.h"
-
-#ifdef CONFIG_MAC80211_LEDS
-extern void ieee80211_led_rx(struct ieee80211_local *local);
-extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
-extern void ieee80211_led_assoc(struct ieee80211_local *local,
- bool associated);
-extern void ieee80211_led_radio(struct ieee80211_local *local,
- bool enabled);
-extern void ieee80211_led_init(struct ieee80211_local *local);
-extern void ieee80211_led_exit(struct ieee80211_local *local);
-#else
-static inline void ieee80211_led_rx(struct ieee80211_local *local)
-{
-}
-static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
-{
-}
-static inline void ieee80211_led_assoc(struct ieee80211_local *local,
- bool associated)
-{
-}
-static inline void ieee80211_led_radio(struct ieee80211_local *local,
- bool enabled)
-{
-}
-static inline void ieee80211_led_init(struct ieee80211_local *local)
-{
-}
-static inline void ieee80211_led_exit(struct ieee80211_local *local)
-{
-}
-#endif
+++ /dev/null
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/rtnetlink.h>
-#include "ieee80211_rate.h"
-#include "ieee80211_i.h"
-
-struct rate_control_alg {
- struct list_head list;
- struct rate_control_ops *ops;
-};
-
-static LIST_HEAD(rate_ctrl_algs);
-static DEFINE_MUTEX(rate_ctrl_mutex);
-
-static char *ieee80211_default_rc_algo = CONFIG_MAC80211_RC_DEFAULT;
-module_param(ieee80211_default_rc_algo, charp, 0644);
-MODULE_PARM_DESC(ieee80211_default_rc_algo,
- "Default rate control algorithm for mac80211 to use");
-
-int ieee80211_rate_control_register(struct rate_control_ops *ops)
-{
- struct rate_control_alg *alg;
-
- if (!ops->name)
- return -EINVAL;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (!strcmp(alg->ops->name, ops->name)) {
- /* don't register an algorithm twice */
- WARN_ON(1);
- mutex_unlock(&rate_ctrl_mutex);
- return -EALREADY;
- }
- }
-
- alg = kzalloc(sizeof(*alg), GFP_KERNEL);
- if (alg == NULL) {
- mutex_unlock(&rate_ctrl_mutex);
- return -ENOMEM;
- }
- alg->ops = ops;
-
- list_add_tail(&alg->list, &rate_ctrl_algs);
- mutex_unlock(&rate_ctrl_mutex);
-
- return 0;
-}
-EXPORT_SYMBOL(ieee80211_rate_control_register);
-
-void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
-{
- struct rate_control_alg *alg;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (alg->ops == ops) {
- list_del(&alg->list);
- kfree(alg);
- break;
- }
- }
- mutex_unlock(&rate_ctrl_mutex);
-}
-EXPORT_SYMBOL(ieee80211_rate_control_unregister);
-
-static struct rate_control_ops *
-ieee80211_try_rate_control_ops_get(const char *name)
-{
- struct rate_control_alg *alg;
- struct rate_control_ops *ops = NULL;
-
- if (!name)
- return NULL;
-
- mutex_lock(&rate_ctrl_mutex);
- list_for_each_entry(alg, &rate_ctrl_algs, list) {
- if (!strcmp(alg->ops->name, name))
- if (try_module_get(alg->ops->module)) {
- ops = alg->ops;
- break;
- }
- }
- mutex_unlock(&rate_ctrl_mutex);
- return ops;
-}
-
-/* Get the rate control algorithm. */
-static struct rate_control_ops *
-ieee80211_rate_control_ops_get(const char *name)
-{
- struct rate_control_ops *ops;
- const char *alg_name;
-
- if (!name)
- alg_name = ieee80211_default_rc_algo;
- else
- alg_name = name;
-
- ops = ieee80211_try_rate_control_ops_get(alg_name);
- if (!ops) {
- request_module("rc80211_%s", alg_name);
- ops = ieee80211_try_rate_control_ops_get(alg_name);
- }
- if (!ops && name)
- /* try default if specific alg requested but not found */
- ops = ieee80211_try_rate_control_ops_get(ieee80211_default_rc_algo);
-
- /* try built-in one if specific alg requested but not found */
- if (!ops && strlen(CONFIG_MAC80211_RC_DEFAULT))
- ops = ieee80211_try_rate_control_ops_get(CONFIG_MAC80211_RC_DEFAULT);
-
- return ops;
-}
-
-static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
-{
- module_put(ops->module);
-}
-
-struct rate_control_ref *rate_control_alloc(const char *name,
- struct ieee80211_local *local)
-{
- struct rate_control_ref *ref;
-
- ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
- if (!ref)
- goto fail_ref;
- kref_init(&ref->kref);
- ref->ops = ieee80211_rate_control_ops_get(name);
- if (!ref->ops)
- goto fail_ops;
- ref->priv = ref->ops->alloc(local);
- if (!ref->priv)
- goto fail_priv;
- return ref;
-
-fail_priv:
- ieee80211_rate_control_ops_put(ref->ops);
-fail_ops:
- kfree(ref);
-fail_ref:
- return NULL;
-}
-
-static void rate_control_release(struct kref *kref)
-{
- struct rate_control_ref *ctrl_ref;
-
- ctrl_ref = container_of(kref, struct rate_control_ref, kref);
- ctrl_ref->ops->free(ctrl_ref->priv);
- ieee80211_rate_control_ops_put(ctrl_ref->ops);
- kfree(ctrl_ref);
-}
-
-void rate_control_get_rate(struct net_device *dev,
- struct ieee80211_supported_band *sband,
- struct sk_buff *skb,
- struct rate_selection *sel)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct rate_control_ref *ref = local->rate_ctrl;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- struct sta_info *sta;
- int i;
-
- rcu_read_lock();
- sta = sta_info_get(local, hdr->addr1);
-
- memset(sel, 0, sizeof(struct rate_selection));
-
- ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
-
- /* Select a non-ERP backup rate. */
- if (!sel->nonerp) {
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
- if (sel->rate->bitrate < rate->bitrate)
- break;
-
- if (rate_supported(sta, sband->band, i) &&
- !(rate->flags & IEEE80211_RATE_ERP_G))
- sel->nonerp = rate;
- }
- }
-
- rcu_read_unlock();
-}
-
-struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
-{
- kref_get(&ref->kref);
- return ref;
-}
-
-void rate_control_put(struct rate_control_ref *ref)
-{
- kref_put(&ref->kref, rate_control_release);
-}
-
-int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
- const char *name)
-{
- struct rate_control_ref *ref, *old;
-
- ASSERT_RTNL();
- if (local->open_count || netif_running(local->mdev))
- return -EBUSY;
-
- ref = rate_control_alloc(name, local);
- if (!ref) {
- printk(KERN_WARNING "%s: Failed to select rate control "
- "algorithm\n", wiphy_name(local->hw.wiphy));
- return -ENOENT;
- }
-
- old = local->rate_ctrl;
- local->rate_ctrl = ref;
- if (old) {
- rate_control_put(old);
- sta_info_flush(local, NULL);
- }
-
- printk(KERN_DEBUG "%s: Selected rate control "
- "algorithm '%s'\n", wiphy_name(local->hw.wiphy),
- ref->ops->name);
-
-
- return 0;
-}
-
-void rate_control_deinitialize(struct ieee80211_local *local)
-{
- struct rate_control_ref *ref;
-
- ref = local->rate_ctrl;
- local->rate_ctrl = NULL;
- rate_control_put(ref);
-}
-
+++ /dev/null
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef IEEE80211_RATE_H
-#define IEEE80211_RATE_H
-
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/types.h>
-#include <linux/kref.h>
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "sta_info.h"
-
-/* TODO: kdoc */
-struct rate_selection {
- /* Selected transmission rate */
- struct ieee80211_rate *rate;
- /* Non-ERP rate to use if mac80211 decides it cannot use an ERP rate */
- struct ieee80211_rate *nonerp;
- /* probe with this rate, or NULL for no probing */
- struct ieee80211_rate *probe;
-};
-
-struct rate_control_ops {
- struct module *module;
- const char *name;
- void (*tx_status)(void *priv, struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status);
- void (*get_rate)(void *priv, struct net_device *dev,
- struct ieee80211_supported_band *band,
- struct sk_buff *skb,
- struct rate_selection *sel);
- void (*rate_init)(void *priv, void *priv_sta,
- struct ieee80211_local *local, struct sta_info *sta);
- void (*clear)(void *priv);
-
- void *(*alloc)(struct ieee80211_local *local);
- void (*free)(void *priv);
- void *(*alloc_sta)(void *priv, gfp_t gfp);
- void (*free_sta)(void *priv, void *priv_sta);
-
- int (*add_attrs)(void *priv, struct kobject *kobj);
- void (*remove_attrs)(void *priv, struct kobject *kobj);
- void (*add_sta_debugfs)(void *priv, void *priv_sta,
- struct dentry *dir);
- void (*remove_sta_debugfs)(void *priv, void *priv_sta);
-};
-
-struct rate_control_ref {
- struct rate_control_ops *ops;
- void *priv;
- struct kref kref;
-};
-
-int ieee80211_rate_control_register(struct rate_control_ops *ops);
-void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
-
-/* Get a reference to the rate control algorithm. If `name' is NULL, get the
- * first available algorithm. */
-struct rate_control_ref *rate_control_alloc(const char *name,
- struct ieee80211_local *local);
-void rate_control_get_rate(struct net_device *dev,
- struct ieee80211_supported_band *sband,
- struct sk_buff *skb,
- struct rate_selection *sel);
-struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
-void rate_control_put(struct rate_control_ref *ref);
-
-static inline void rate_control_tx_status(struct net_device *dev,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct rate_control_ref *ref = local->rate_ctrl;
-
- ref->ops->tx_status(ref->priv, dev, skb, status);
-}
-
-
-static inline void rate_control_rate_init(struct sta_info *sta,
- struct ieee80211_local *local)
-{
- struct rate_control_ref *ref = sta->rate_ctrl;
- ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
-}
-
-
-static inline void rate_control_clear(struct ieee80211_local *local)
-{
- struct rate_control_ref *ref = local->rate_ctrl;
- ref->ops->clear(ref->priv);
-}
-
-static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
- gfp_t gfp)
-{
- return ref->ops->alloc_sta(ref->priv, gfp);
-}
-
-static inline void rate_control_free_sta(struct rate_control_ref *ref,
- void *priv)
-{
- ref->ops->free_sta(ref->priv, priv);
-}
-
-static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
-{
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct rate_control_ref *ref = sta->rate_ctrl;
- if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
- ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
- sta->debugfs.dir);
-#endif
-}
-
-static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
-{
-#ifdef CONFIG_MAC80211_DEBUGFS
- struct rate_control_ref *ref = sta->rate_ctrl;
- if (ref->ops->remove_sta_debugfs)
- ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
-#endif
-}
-
-static inline int rate_supported(struct sta_info *sta,
- enum ieee80211_band band,
- int index)
-{
- return (sta == NULL || sta->supp_rates[band] & BIT(index));
-}
-
-static inline int
-rate_lowest_index(struct ieee80211_local *local,
- struct ieee80211_supported_band *sband,
- struct sta_info *sta)
-{
- int i;
-
- for (i = 0; i < sband->n_bitrates; i++)
- if (rate_supported(sta, sband->band, i))
- return i;
-
- /* warn when we cannot find a rate. */
- WARN_ON(1);
-
- return 0;
-}
-
-static inline struct ieee80211_rate *
-rate_lowest(struct ieee80211_local *local,
- struct ieee80211_supported_band *sband,
- struct sta_info *sta)
-{
- return &sband->bitrates[rate_lowest_index(local, sband, sta)];
-}
-
-
-/* functions for rate control related to a device */
-int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
- const char *name);
-void rate_control_deinitialize(struct ieee80211_local *local);
-
-
-/* Rate control algorithms */
-#if defined(RC80211_PID_COMPILE) || \
- (defined(CONFIG_MAC80211_RC_PID) && \
- !defined(CONFIG_MAC80211_RC_PID_MODULE))
-extern int rc80211_pid_init(void);
-extern void rc80211_pid_exit(void);
-#else
-static inline int rc80211_pid_init(void)
-{
- return 0;
-}
-static inline void rc80211_pid_exit(void)
-{
-}
-#endif
-
-#endif /* IEEE80211_RATE_H */
+++ /dev/null
-/*
- * BSS client mode implementation
- * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
- * Copyright 2004, Instant802 Networks, Inc.
- * Copyright 2005, Devicescape Software, Inc.
- * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
- * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* TODO:
- * order BSS list by RSSI(?) ("quality of AP")
- * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
- * SSID)
- */
-#include <linux/delay.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <linux/random.h>
-#include <linux/etherdevice.h>
-#include <linux/rtnetlink.h>
-#include <net/iw_handler.h>
-#include <asm/types.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "ieee80211_led.h"
-#include "mesh.h"
-
-#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
-#define IEEE80211_AUTH_MAX_TRIES 3
-#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
-#define IEEE80211_ASSOC_MAX_TRIES 3
-#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
-#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define IEEE80211_PROBE_INTERVAL (60 * HZ)
-#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
-#define IEEE80211_SCAN_INTERVAL (2 * HZ)
-#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
-#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
-
-#define IEEE80211_PROBE_DELAY (HZ / 33)
-#define IEEE80211_CHANNEL_TIME (HZ / 33)
-#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
-#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
-#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
-#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
-#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
-
-#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
-
-
-#define ERP_INFO_USE_PROTECTION BIT(1)
-
-/* mgmt header + 1 byte action code */
-#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
-
-#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
-#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
-#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
-#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
-
-/* next values represent the buffer size for A-MPDU frame.
- * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
-#define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
-
-static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
- u8 *ssid, size_t ssid_len);
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len);
-static void ieee80211_rx_bss_put(struct net_device *dev,
- struct ieee80211_sta_bss *bss);
-static int ieee80211_sta_find_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-static int ieee80211_sta_wep_configured(struct net_device *dev);
-static int ieee80211_sta_start_scan(struct net_device *dev,
- u8 *ssid, size_t ssid_len);
-static int ieee80211_sta_config_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-
-
-void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems)
-{
- size_t left = len;
- u8 *pos = start;
-
- memset(elems, 0, sizeof(*elems));
-
- while (left >= 2) {
- u8 id, elen;
-
- id = *pos++;
- elen = *pos++;
- left -= 2;
-
- if (elen > left)
- return;
-
- switch (id) {
- case WLAN_EID_SSID:
- elems->ssid = pos;
- elems->ssid_len = elen;
- break;
- case WLAN_EID_SUPP_RATES:
- elems->supp_rates = pos;
- elems->supp_rates_len = elen;
- break;
- case WLAN_EID_FH_PARAMS:
- elems->fh_params = pos;
- elems->fh_params_len = elen;
- break;
- case WLAN_EID_DS_PARAMS:
- elems->ds_params = pos;
- elems->ds_params_len = elen;
- break;
- case WLAN_EID_CF_PARAMS:
- elems->cf_params = pos;
- elems->cf_params_len = elen;
- break;
- case WLAN_EID_TIM:
- elems->tim = pos;
- elems->tim_len = elen;
- break;
- case WLAN_EID_IBSS_PARAMS:
- elems->ibss_params = pos;
- elems->ibss_params_len = elen;
- break;
- case WLAN_EID_CHALLENGE:
- elems->challenge = pos;
- elems->challenge_len = elen;
- break;
- case WLAN_EID_WPA:
- if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
- pos[2] == 0xf2) {
- /* Microsoft OUI (00:50:F2) */
- if (pos[3] == 1) {
- /* OUI Type 1 - WPA IE */
- elems->wpa = pos;
- elems->wpa_len = elen;
- } else if (elen >= 5 && pos[3] == 2) {
- if (pos[4] == 0) {
- elems->wmm_info = pos;
- elems->wmm_info_len = elen;
- } else if (pos[4] == 1) {
- elems->wmm_param = pos;
- elems->wmm_param_len = elen;
- }
- }
- }
- break;
- case WLAN_EID_RSN:
- elems->rsn = pos;
- elems->rsn_len = elen;
- break;
- case WLAN_EID_ERP_INFO:
- elems->erp_info = pos;
- elems->erp_info_len = elen;
- break;
- case WLAN_EID_EXT_SUPP_RATES:
- elems->ext_supp_rates = pos;
- elems->ext_supp_rates_len = elen;
- break;
- case WLAN_EID_HT_CAPABILITY:
- elems->ht_cap_elem = pos;
- elems->ht_cap_elem_len = elen;
- break;
- case WLAN_EID_HT_EXTRA_INFO:
- elems->ht_info_elem = pos;
- elems->ht_info_elem_len = elen;
- break;
- case WLAN_EID_MESH_ID:
- elems->mesh_id = pos;
- elems->mesh_id_len = elen;
- break;
- case WLAN_EID_MESH_CONFIG:
- elems->mesh_config = pos;
- elems->mesh_config_len = elen;
- break;
- case WLAN_EID_PEER_LINK:
- elems->peer_link = pos;
- elems->peer_link_len = elen;
- break;
- case WLAN_EID_PREQ:
- elems->preq = pos;
- elems->preq_len = elen;
- break;
- case WLAN_EID_PREP:
- elems->prep = pos;
- elems->prep_len = elen;
- break;
- case WLAN_EID_PERR:
- elems->perr = pos;
- elems->perr_len = elen;
- break;
- default:
- break;
- }
-
- left -= elen;
- pos += elen;
- }
-}
-
-
-static int ecw2cw(int ecw)
-{
- return (1 << ecw) - 1;
-}
-
-
-static void ieee80211_sta_def_wmm_params(struct net_device *dev,
- struct ieee80211_sta_bss *bss,
- int ibss)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = sdata->local;
- int i, have_higher_than_11mbit = 0;
-
-
- /* cf. IEEE 802.11 9.2.12 */
- for (i = 0; i < bss->supp_rates_len; i++)
- if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
- have_higher_than_11mbit = 1;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
-
-
- if (local->ops->conf_tx) {
- struct ieee80211_tx_queue_params qparam;
-
- memset(&qparam, 0, sizeof(qparam));
-
- qparam.aifs = 2;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
- qparam.cw_min = 31;
- else
- qparam.cw_min = 15;
-
- qparam.cw_max = 1023;
- qparam.txop = 0;
-
- for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
- local->ops->conf_tx(local_to_hw(local),
- i + IEEE80211_TX_QUEUE_DATA0,
- &qparam);
-
- if (ibss) {
- /* IBSS uses different parameters for Beacon sending */
- qparam.cw_min++;
- qparam.cw_min *= 2;
- qparam.cw_min--;
- local->ops->conf_tx(local_to_hw(local),
- IEEE80211_TX_QUEUE_BEACON, &qparam);
- }
- }
-}
-
-static void ieee80211_sta_wmm_params(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- u8 *wmm_param, size_t wmm_param_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_queue_params params;
- size_t left;
- int count;
- u8 *pos;
-
- if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
- return;
- count = wmm_param[6] & 0x0f;
- if (count == ifsta->wmm_last_param_set)
- return;
- ifsta->wmm_last_param_set = count;
-
- pos = wmm_param + 8;
- left = wmm_param_len - 8;
-
- memset(¶ms, 0, sizeof(params));
-
- if (!local->ops->conf_tx)
- return;
-
- local->wmm_acm = 0;
- for (; left >= 4; left -= 4, pos += 4) {
- int aci = (pos[0] >> 5) & 0x03;
- int acm = (pos[0] >> 4) & 0x01;
- int queue;
-
- switch (aci) {
- case 1:
- queue = IEEE80211_TX_QUEUE_DATA3;
- if (acm) {
- local->wmm_acm |= BIT(0) | BIT(3);
- }
- break;
- case 2:
- queue = IEEE80211_TX_QUEUE_DATA1;
- if (acm) {
- local->wmm_acm |= BIT(4) | BIT(5);
- }
- break;
- case 3:
- queue = IEEE80211_TX_QUEUE_DATA0;
- if (acm) {
- local->wmm_acm |= BIT(6) | BIT(7);
- }
- break;
- case 0:
- default:
- queue = IEEE80211_TX_QUEUE_DATA2;
- if (acm) {
- local->wmm_acm |= BIT(1) | BIT(2);
- }
- break;
- }
-
- params.aifs = pos[0] & 0x0f;
- params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
- params.cw_min = ecw2cw(pos[1] & 0x0f);
- params.txop = pos[2] | (pos[3] << 8);
-#ifdef CONFIG_MAC80211_DEBUG
- printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d txop=%d\n",
- dev->name, queue, aci, acm, params.aifs, params.cw_min,
- params.cw_max, params.txop);
-#endif
- /* TODO: handle ACM (block TX, fallback to next lowest allowed
- * AC for now) */
- if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
- printk(KERN_DEBUG "%s: failed to set TX queue "
- "parameters for queue %d\n", dev->name, queue);
- }
- }
-}
-
-
-static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
- u8 erp_value)
-{
- struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
- bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
- DECLARE_MAC_BUF(mac);
- u32 changed = 0;
-
- if (use_protection != bss_conf->use_cts_prot) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
- "%s)\n",
- sdata->dev->name,
- use_protection ? "enabled" : "disabled",
- print_mac(mac, ifsta->bssid));
- }
- bss_conf->use_cts_prot = use_protection;
- changed |= BSS_CHANGED_ERP_CTS_PROT;
- }
-
- if (use_short_preamble != bss_conf->use_short_preamble) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: switched to %s barker preamble"
- " (BSSID=%s)\n",
- sdata->dev->name,
- use_short_preamble ? "short" : "long",
- print_mac(mac, ifsta->bssid));
- }
- bss_conf->use_short_preamble = use_short_preamble;
- changed |= BSS_CHANGED_ERP_PREAMBLE;
- }
-
- return changed;
-}
-
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
- struct ieee80211_ht_info *ht_info)
-{
-
- if (ht_info == NULL)
- return -EINVAL;
-
- memset(ht_info, 0, sizeof(*ht_info));
-
- if (ht_cap_ie) {
- u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
- ht_info->ht_supported = 1;
- ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_info->ampdu_factor =
- ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
- ht_info->ampdu_density =
- (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
- memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
- } else
- ht_info->ht_supported = 0;
-
- return 0;
-}
-
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
- struct ieee80211_ht_addt_info *ht_add_info_ie,
- struct ieee80211_ht_bss_info *bss_info)
-{
- if (bss_info == NULL)
- return -EINVAL;
-
- memset(bss_info, 0, sizeof(*bss_info));
-
- if (ht_add_info_ie) {
- u16 op_mode;
- op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
-
- bss_info->primary_channel = ht_add_info_ie->control_chan;
- bss_info->bss_cap = ht_add_info_ie->ht_param;
- bss_info->bss_op_mode = (u8)(op_mode & 0xff);
- }
-
- return 0;
-}
-
-static void ieee80211_sta_send_associnfo(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- char *buf;
- size_t len;
- int i;
- union iwreq_data wrqu;
-
- if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
- return;
-
- buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
- ifsta->assocresp_ies_len), GFP_KERNEL);
- if (!buf)
- return;
-
- len = sprintf(buf, "ASSOCINFO(");
- if (ifsta->assocreq_ies) {
- len += sprintf(buf + len, "ReqIEs=");
- for (i = 0; i < ifsta->assocreq_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocreq_ies[i]);
- }
- }
- if (ifsta->assocresp_ies) {
- if (ifsta->assocreq_ies)
- len += sprintf(buf + len, " ");
- len += sprintf(buf + len, "RespIEs=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
- }
- len += sprintf(buf + len, ")");
-
- if (len > IW_CUSTOM_MAX) {
- len = sprintf(buf, "ASSOCRESPIE=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
- }
-
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = len;
- wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
-
- kfree(buf);
-}
-
-
-static void ieee80211_set_associated(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- bool assoc)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_conf *conf = &local_to_hw(local)->conf;
- union iwreq_data wrqu;
- u32 changed = BSS_CHANGED_ASSOC;
-
- if (assoc) {
- struct ieee80211_sta_bss *bss;
-
- ifsta->flags |= IEEE80211_STA_ASSOCIATED;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- conf->channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- /* set timing information */
- sdata->bss_conf.beacon_int = bss->beacon_int;
- sdata->bss_conf.timestamp = bss->timestamp;
-
- if (bss->has_erp_value)
- changed |= ieee80211_handle_erp_ie(
- sdata, bss->erp_value);
-
- ieee80211_rx_bss_put(dev, bss);
- }
-
- if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
- changed |= BSS_CHANGED_HT;
- sdata->bss_conf.assoc_ht = 1;
- sdata->bss_conf.ht_conf = &conf->ht_conf;
- sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
- }
-
- netif_carrier_on(dev);
- ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
- memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
- memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
- ieee80211_sta_send_associnfo(dev, ifsta);
- } else {
- ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- netif_carrier_off(dev);
- ieee80211_reset_erp_info(dev);
-
- sdata->bss_conf.assoc_ht = 0;
- sdata->bss_conf.ht_conf = NULL;
- sdata->bss_conf.ht_bss_conf = NULL;
-
- memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
- }
- ifsta->last_probe = jiffies;
- ieee80211_led_assoc(local, assoc);
-
- sdata->bss_conf.assoc = assoc;
- ieee80211_bss_info_change_notify(sdata, changed);
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
-}
-
-static void ieee80211_set_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, int deauth)
-{
- if (deauth)
- ifsta->auth_tries = 0;
- ifsta->assoc_tries = 0;
- ieee80211_set_associated(dev, ifsta, 0);
-}
-
-void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
- int encrypt)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_tx_packet_data *pkt_data;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- skb->dev = sdata->local->mdev;
- skb_set_mac_header(skb, 0);
- skb_set_network_header(skb, 0);
- skb_set_transport_header(skb, 0);
-
- pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
- memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
- pkt_data->ifindex = sdata->dev->ifindex;
- if (!encrypt)
- pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
-
- dev_queue_xmit(skb);
-}
-
-
-static void ieee80211_send_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- int transaction, u8 *extra, size_t extra_len,
- int encrypt)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
- memset(mgmt, 0, 24 + 6);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_AUTH);
- if (encrypt)
- mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
- mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
- ifsta->auth_transaction = transaction + 1;
- mgmt->u.auth.status_code = cpu_to_le16(0);
- if (extra)
- memcpy(skb_put(skb, extra_len), extra, extra_len);
-
- ieee80211_sta_tx(dev, skb, encrypt);
-}
-
-
-static void ieee80211_authenticate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->auth_tries++;
- if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
- printk(KERN_DEBUG "%s: authentication with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_AUTHENTICATE;
- printk(KERN_DEBUG "%s: authenticate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
-
- ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
-}
-
-
-static void ieee80211_send_assoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies;
- int i, len;
- u16 capab;
- struct ieee80211_sta_bss *bss;
- int wmm = 0;
- struct ieee80211_supported_band *sband;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
- ifsta->ssid_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- capab = ifsta->capab;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
- if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
- capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
- if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
- capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
- }
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
- capab |= WLAN_CAPABILITY_PRIVACY;
- if (bss->wmm_ie) {
- wmm = 1;
- }
- ieee80211_rx_bss_put(dev, bss);
- }
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
- if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
- skb_put(skb, 10);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_REASSOC_REQ);
- mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
- memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
- ETH_ALEN);
- } else {
- skb_put(skb, 4);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ASSOC_REQ);
- mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
- }
-
- /* SSID */
- ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
-
- len = sband->n_bitrates;
- if (len > 8)
- len = 8;
- pos = skb_put(skb, len + 2);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = len;
- for (i = 0; i < len; i++) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
- }
-
- if (sband->n_bitrates > len) {
- pos = skb_put(skb, sband->n_bitrates - len + 2);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = sband->n_bitrates - len;
- for (i = len; i < sband->n_bitrates; i++) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
- }
- }
-
- if (ifsta->extra_ie) {
- pos = skb_put(skb, ifsta->extra_ie_len);
- memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
- }
-
- if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- pos = skb_put(skb, 9);
- *pos++ = WLAN_EID_VENDOR_SPECIFIC;
- *pos++ = 7; /* len */
- *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
- *pos++ = 0x50;
- *pos++ = 0xf2;
- *pos++ = 2; /* WME */
- *pos++ = 0; /* WME info */
- *pos++ = 1; /* WME ver */
- *pos++ = 0;
- }
- /* wmm support is a must to HT */
- if (wmm && sband->ht_info.ht_supported) {
- __le16 tmp = cpu_to_le16(sband->ht_info.cap);
- pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
- *pos++ = WLAN_EID_HT_CAPABILITY;
- *pos++ = sizeof(struct ieee80211_ht_cap);
- memset(pos, 0, sizeof(struct ieee80211_ht_cap));
- memcpy(pos, &tmp, sizeof(u16));
- pos += sizeof(u16);
- /* TODO: needs a define here for << 2 */
- *pos++ = sband->ht_info.ampdu_factor |
- (sband->ht_info.ampdu_density << 2);
- memcpy(pos, sband->ht_info.supp_mcs_set, 16);
- }
-
- kfree(ifsta->assocreq_ies);
- ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
- ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
- if (ifsta->assocreq_ies)
- memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static void ieee80211_send_deauth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DEAUTH);
- skb_put(skb, 2);
- mgmt->u.deauth.reason_code = cpu_to_le16(reason);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static void ieee80211_send_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DISASSOC);
- skb_put(skb, 2);
- mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static int ieee80211_privacy_mismatch(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- int bss_privacy;
- int wep_privacy;
- int privacy_invoked;
-
- if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
- return 0;
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- return 0;
-
- bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
- wep_privacy = !!ieee80211_sta_wep_configured(dev);
- privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
-
- ieee80211_rx_bss_put(dev, bss);
-
- if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
- return 0;
-
- return 1;
-}
-
-
-static void ieee80211_associate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->assoc_tries++;
- if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
- printk(KERN_DEBUG "%s: association with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_ASSOCIATE;
- printk(KERN_DEBUG "%s: associate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
- if (ieee80211_privacy_mismatch(dev, ifsta)) {
- printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
- "mixed-cell disabled - abort association\n", dev->name);
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ieee80211_send_assoc(dev, ifsta);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
-}
-
-
-static void ieee80211_associated(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- int disassoc;
- DECLARE_MAC_BUF(mac);
-
- /* TODO: start monitoring current AP signal quality and number of
- * missed beacons. Scan other channels every now and then and search
- * for better APs. */
- /* TODO: remove expired BSSes */
-
- ifsta->state = IEEE80211_ASSOCIATED;
-
- rcu_read_lock();
-
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- } else {
- disassoc = 0;
- if (time_after(jiffies,
- sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
- if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
- printk(KERN_DEBUG "%s: No ProbeResp from "
- "current AP %s - assume out of "
- "range\n",
- dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- sta_info_unlink(&sta);
- } else
- ieee80211_send_probe_req(dev, ifsta->bssid,
- local->scan_ssid,
- local->scan_ssid_len);
- ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
- } else {
- ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
- if (time_after(jiffies, ifsta->last_probe +
- IEEE80211_PROBE_INTERVAL)) {
- ifsta->last_probe = jiffies;
- ieee80211_send_probe_req(dev, ifsta->bssid,
- ifsta->ssid,
- ifsta->ssid_len);
- }
- }
- }
-
- rcu_read_unlock();
-
- if (disassoc && sta)
- sta_info_destroy(sta);
-
- if (disassoc) {
- ifsta->state = IEEE80211_DISABLED;
- ieee80211_set_associated(dev, ifsta, 0);
- } else {
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_MONITORING_INTERVAL);
- }
-}
-
-
-static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
- u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_supported_band *sband;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *supp_rates, *esupp_rates = NULL;
- int i;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
- "request\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_PROBE_REQ);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (dst) {
- memcpy(mgmt->da, dst, ETH_ALEN);
- memcpy(mgmt->bssid, dst, ETH_ALEN);
- } else {
- memset(mgmt->da, 0xff, ETH_ALEN);
- memset(mgmt->bssid, 0xff, ETH_ALEN);
- }
- pos = skb_put(skb, 2 + ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ssid_len;
- memcpy(pos, ssid, ssid_len);
-
- supp_rates = skb_put(skb, 2);
- supp_rates[0] = WLAN_EID_SUPP_RATES;
- supp_rates[1] = 0;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
- if (esupp_rates) {
- pos = skb_put(skb, 1);
- esupp_rates[1]++;
- } else if (supp_rates[1] == 8) {
- esupp_rates = skb_put(skb, 3);
- esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
- esupp_rates[1] = 1;
- pos = &esupp_rates[2];
- } else {
- pos = skb_put(skb, 1);
- supp_rates[1]++;
- }
- *pos = rate->bitrate / 5;
- }
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-
-static int ieee80211_sta_wep_configured(struct net_device *dev)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (!sdata || !sdata->default_key ||
- sdata->default_key->conf.alg != ALG_WEP)
- return 0;
- return 1;
-}
-
-
-static void ieee80211_auth_completed(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- printk(KERN_DEBUG "%s: authenticated\n", dev->name);
- ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
- ieee80211_associate(dev, ifsta);
-}
-
-
-static void ieee80211_auth_challenge(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u8 *pos;
- struct ieee802_11_elems elems;
-
- printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
- pos = mgmt->u.auth.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
- if (!elems.challenge) {
- printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
- "frame\n", dev->name);
- return;
- }
- ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
- elems.challenge_len + 2, 1);
-}
-
-static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
- u8 dialog_token, u16 status, u16 policy,
- u16 buf_size, u16 timeout)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 capab;
-
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
- sizeof(mgmt->u.action.u.addba_resp));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer "
- "for addba resp frame\n", dev->name);
- return;
- }
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
- mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
-
- capab = (u16)(policy << 1); /* bit 1 aggregation policy */
- capab |= (u16)(tid << 2); /* bit 5:2 TID number */
- capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
-
- mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
- mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
- mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
-
- ieee80211_sta_tx(dev, skb, 0);
-
- return;
-}
-
-void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
- u16 tid, u8 dialog_token, u16 start_seq_num,
- u16 agg_size, u16 timeout)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 capab;
-
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
- sizeof(mgmt->u.action.u.addba_req));
-
-
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer "
- "for addba request frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
-
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
-
- mgmt->u.action.u.addba_req.dialog_token = dialog_token;
- capab = (u16)(1 << 1); /* bit 1 aggregation policy */
- capab |= (u16)(tid << 2); /* bit 5:2 TID number */
- capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */
-
- mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
-
- mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
- mgmt->u.action.u.addba_req.start_seq_num =
- cpu_to_le16(start_seq_num << 4);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-static void ieee80211_sta_process_addba_request(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw *hw = &local->hw;
- struct ieee80211_conf *conf = &hw->conf;
- struct sta_info *sta;
- struct tid_ampdu_rx *tid_agg_rx;
- u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
- u8 dialog_token;
- int ret = -EOPNOTSUPP;
- DECLARE_MAC_BUF(mac);
-
- rcu_read_lock();
-
- sta = sta_info_get(local, mgmt->sa);
- if (!sta) {
- rcu_read_unlock();
- return;
- }
-
- /* extract session parameters from addba request frame */
- dialog_token = mgmt->u.action.u.addba_req.dialog_token;
- timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
- start_seq_num =
- le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
-
- capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
- ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
- buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
-
- status = WLAN_STATUS_REQUEST_DECLINED;
-
- /* sanity check for incoming parameters:
- * check if configuration can support the BA policy
- * and if buffer size does not exceeds max value */
- if (((ba_policy != 1)
- && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
- || (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
- status = WLAN_STATUS_INVALID_QOS_PARAM;
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "AddBA Req with bad params from "
- "%s on tid %u. policy %d, buffer size %d\n",
- print_mac(mac, mgmt->sa), tid, ba_policy,
- buf_size);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto end_no_lock;
- }
- /* determine default buffer size */
- if (buf_size == 0) {
- struct ieee80211_supported_band *sband;
-
- sband = local->hw.wiphy->bands[conf->channel->band];
- buf_size = IEEE80211_MIN_AMPDU_BUF;
- buf_size = buf_size << sband->ht_info.ampdu_factor;
- }
-
-
- /* examine state machine */
- spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
-
- if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "unexpected AddBA Req from "
- "%s on tid %u\n",
- print_mac(mac, mgmt->sa), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto end;
- }
-
- /* prepare A-MPDU MLME for Rx aggregation */
- sta->ampdu_mlme.tid_rx[tid] =
- kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
- if (!sta->ampdu_mlme.tid_rx[tid]) {
- if (net_ratelimit())
- printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
- tid);
- goto end;
- }
- /* rx timer */
- sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
- sta_rx_agg_session_timer_expired;
- sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
- (unsigned long)&sta->timer_to_tid[tid];
- init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
- tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
-
- /* prepare reordering buffer */
- tid_agg_rx->reorder_buf =
- kmalloc(buf_size * sizeof(struct sk_buf *), GFP_ATOMIC);
- if (!tid_agg_rx->reorder_buf) {
- if (net_ratelimit())
- printk(KERN_ERR "can not allocate reordering buffer "
- "to tid %d\n", tid);
- kfree(sta->ampdu_mlme.tid_rx[tid]);
- goto end;
- }
- memset(tid_agg_rx->reorder_buf, 0,
- buf_size * sizeof(struct sk_buf *));
-
- if (local->ops->ampdu_action)
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
- sta->addr, tid, &start_seq_num);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- if (ret) {
- kfree(tid_agg_rx->reorder_buf);
- kfree(tid_agg_rx);
- sta->ampdu_mlme.tid_rx[tid] = NULL;
- goto end;
- }
-
- /* change state and send addba resp */
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
- tid_agg_rx->dialog_token = dialog_token;
- tid_agg_rx->ssn = start_seq_num;
- tid_agg_rx->head_seq_num = start_seq_num;
- tid_agg_rx->buf_size = buf_size;
- tid_agg_rx->timeout = timeout;
- tid_agg_rx->stored_mpdu_num = 0;
- status = WLAN_STATUS_SUCCESS;
-end:
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
-
-end_no_lock:
- ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid,
- dialog_token, status, 1, buf_size, timeout);
- rcu_read_unlock();
-}
-
-static void ieee80211_sta_process_addba_resp(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw *hw = &local->hw;
- struct sta_info *sta;
- u16 capab;
- u16 tid;
- u8 *state;
-
- rcu_read_lock();
-
- sta = sta_info_get(local, mgmt->sa);
- if (!sta) {
- rcu_read_unlock();
- return;
- }
-
- capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
-
- state = &sta->ampdu_mlme.tid_state_tx[tid];
-
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
-
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:"
- "%d\n", *state);
- goto addba_resp_exit;
- }
-
- if (mgmt->u.action.u.addba_resp.dialog_token !=
- sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto addba_resp_exit;
- }
-
- del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
- == WLAN_STATUS_SUCCESS) {
- if (*state & HT_ADDBA_RECEIVED_MSK)
- printk(KERN_DEBUG "double addBA response\n");
-
- *state |= HT_ADDBA_RECEIVED_MSK;
- sta->ampdu_mlme.addba_req_num[tid] = 0;
-
- if (*state == HT_AGG_STATE_OPERATIONAL) {
- printk(KERN_DEBUG "Aggregation on for tid %d \n", tid);
- ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
- }
-
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid);
- } else {
- printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid);
-
- sta->ampdu_mlme.addba_req_num[tid]++;
- /* this will allow the state check in stop_BA_session */
- *state = HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
- WLAN_BACK_INITIATOR);
- }
-
-addba_resp_exit:
- rcu_read_unlock();
-}
-
-void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
- u16 initiator, u16 reason_code)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 params;
-
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
- sizeof(mgmt->u.action.u.delba));
-
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer "
- "for delba frame\n", dev->name);
- return;
- }
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
-
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
- params = (u16)(initiator << 11); /* bit 11 initiator */
- params |= (u16)(tid << 12); /* bit 15:12 TID number */
-
- mgmt->u.action.u.delba.params = cpu_to_le16(params);
- mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
-
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid,
- u16 initiator, u16 reason)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw *hw = &local->hw;
- struct sta_info *sta;
- int ret, i;
- DECLARE_MAC_BUF(mac);
-
- rcu_read_lock();
-
- sta = sta_info_get(local, ra);
- if (!sta) {
- rcu_read_unlock();
- return;
- }
-
- /* check if TID is in operational state */
- spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
- if (sta->ampdu_mlme.tid_state_rx[tid]
- != HT_AGG_STATE_OPERATIONAL) {
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
- rcu_read_unlock();
- return;
- }
- sta->ampdu_mlme.tid_state_rx[tid] =
- HT_AGG_STATE_REQ_STOP_BA_MSK |
- (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
-
- /* stop HW Rx aggregation. ampdu_action existence
- * already verified in session init so we add the BUG_ON */
- BUG_ON(!local->ops->ampdu_action);
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
- print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
- ra, tid, NULL);
- if (ret)
- printk(KERN_DEBUG "HW problem - can not stop rx "
- "aggergation for tid %d\n", tid);
-
- /* shutdown timer has not expired */
- if (initiator != WLAN_BACK_TIMER)
- del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
- /* check if this is a self generated aggregation halt */
- if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
- ieee80211_send_delba(dev, ra, tid, 0, reason);
-
- /* free the reordering buffer */
- for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
- if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
- /* release the reordered frames */
- dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
- sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
- sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
- }
- }
- /* free resources */
- kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
- kfree(sta->ampdu_mlme.tid_rx[tid]);
- sta->ampdu_mlme.tid_rx[tid] = NULL;
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
-
- rcu_read_unlock();
-}
-
-
-static void ieee80211_sta_process_delba(struct net_device *dev,
- struct ieee80211_mgmt *mgmt, size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- u16 tid, params;
- u16 initiator;
- DECLARE_MAC_BUF(mac);
-
- rcu_read_lock();
-
- sta = sta_info_get(local, mgmt->sa);
- if (!sta) {
- rcu_read_unlock();
- return;
- }
-
- params = le16_to_cpu(mgmt->u.action.u.delba.params);
- tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
- initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
- print_mac(mac, mgmt->sa),
- initiator ? "initiator" : "recipient", tid,
- mgmt->u.action.u.delba.reason_code);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- if (initiator == WLAN_BACK_INITIATOR)
- ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid,
- WLAN_BACK_INITIATOR, 0);
- else { /* WLAN_BACK_RECIPIENT */
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
- sta->ampdu_mlme.tid_state_tx[tid] =
- HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
- WLAN_BACK_RECIPIENT);
- }
- rcu_read_unlock();
-}
-
-/*
- * After sending add Block Ack request we activated a timer until
- * add Block Ack response will arrive from the recipient.
- * If this timer expires sta_addba_resp_timer_expired will be executed.
- */
-void sta_addba_resp_timer_expired(unsigned long data)
-{
- /* not an elegant detour, but there is no choice as the timer passes
- * only one argument, and both sta_info and TID are needed, so init
- * flow in sta_info_create gives the TID as data, while the timer_to_id
- * array gives the sta through container_of */
- u16 tid = *(int *)data;
- struct sta_info *temp_sta = container_of((void *)data,
- struct sta_info, timer_to_tid[tid]);
-
- struct ieee80211_local *local = temp_sta->local;
- struct ieee80211_hw *hw = &local->hw;
- struct sta_info *sta;
- u8 *state;
-
- rcu_read_lock();
-
- sta = sta_info_get(local, temp_sta->addr);
- if (!sta) {
- rcu_read_unlock();
- return;
- }
-
- state = &sta->ampdu_mlme.tid_state_tx[tid];
- /* check if the TID waits for addBA response */
- spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- *state = HT_AGG_STATE_IDLE;
- printk(KERN_DEBUG "timer expired on tid %d but we are not "
- "expecting addBA response there", tid);
- goto timer_expired_exit;
- }
-
- printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
-
- /* go through the state check in stop_BA_session */
- *state = HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
- ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
- WLAN_BACK_INITIATOR);
-
-timer_expired_exit:
- rcu_read_unlock();
-}
-
-/*
- * After accepting the AddBA Request we activated a timer,
- * resetting it after each frame that arrives from the originator.
- * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
- */
-void sta_rx_agg_session_timer_expired(unsigned long data)
-{
- /* not an elegant detour, but there is no choice as the timer passes
- * only one argument, and verious sta_info are needed here, so init
- * flow in sta_info_create gives the TID as data, while the timer_to_id
- * array gives the sta through container_of */
- u8 *ptid = (u8 *)data;
- u8 *timer_to_id = ptid - *ptid;
- struct sta_info *sta = container_of(timer_to_id, struct sta_info,
- timer_to_tid[0]);
-
- printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
- ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr,
- (u16)*ptid, WLAN_BACK_TIMER,
- WLAN_REASON_QSTA_TIMEOUT);
-}
-
-void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int i;
-
- for (i = 0; i < STA_TID_NUM; i++) {
- ieee80211_stop_tx_ba_session(&local->hw, addr, i,
- WLAN_BACK_INITIATOR);
- ieee80211_sta_stop_rx_ba_session(dev, addr, i,
- WLAN_BACK_RECIPIENT,
- WLAN_REASON_QSTA_LEAVE_QBSS);
- }
-}
-
-static void ieee80211_rx_mgmt_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- u16 auth_alg, auth_transaction, status_code;
- DECLARE_MAC_BUF(mac);
-
- if (ifsta->state != IEEE80211_AUTHENTICATE &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "%s, but not in authenticate state - ignored\n",
- dev->name, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (len < 24 + 6) {
- printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: authentication frame received from "
- "unknown BSSID (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
- auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
- status_code = le16_to_cpu(mgmt->u.auth.status_code);
-
- printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d "
- "transaction=%d status=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), auth_alg,
- auth_transaction, status_code);
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- /* IEEE 802.11 standard does not require authentication in IBSS
- * networks and most implementations do not seem to use it.
- * However, try to reply to authentication attempts if someone
- * has actually implemented this.
- * TODO: Could implement shared key authentication. */
- if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
- printk(KERN_DEBUG "%s: unexpected IBSS authentication "
- "frame (alg=%d transaction=%d)\n",
- dev->name, auth_alg, auth_transaction);
- return;
- }
- ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
- }
-
- if (auth_alg != ifsta->auth_alg ||
- auth_transaction != ifsta->auth_transaction) {
- printk(KERN_DEBUG "%s: unexpected authentication frame "
- "(alg=%d transaction=%d)\n",
- dev->name, auth_alg, auth_transaction);
- return;
- }
-
- if (status_code != WLAN_STATUS_SUCCESS) {
- printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
- "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
- if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
- u8 algs[3];
- const int num_algs = ARRAY_SIZE(algs);
- int i, pos;
- algs[0] = algs[1] = algs[2] = 0xff;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
- algs[0] = WLAN_AUTH_OPEN;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
- algs[1] = WLAN_AUTH_SHARED_KEY;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
- algs[2] = WLAN_AUTH_LEAP;
- if (ifsta->auth_alg == WLAN_AUTH_OPEN)
- pos = 0;
- else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
- pos = 1;
- else
- pos = 2;
- for (i = 0; i < num_algs; i++) {
- pos++;
- if (pos >= num_algs)
- pos = 0;
- if (algs[pos] == ifsta->auth_alg ||
- algs[pos] == 0xff)
- continue;
- if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
- !ieee80211_sta_wep_configured(dev))
- continue;
- ifsta->auth_alg = algs[pos];
- printk(KERN_DEBUG "%s: set auth_alg=%d for "
- "next try\n",
- dev->name, ifsta->auth_alg);
- break;
- }
- }
- return;
- }
-
- switch (ifsta->auth_alg) {
- case WLAN_AUTH_OPEN:
- case WLAN_AUTH_LEAP:
- ieee80211_auth_completed(dev, ifsta);
- break;
- case WLAN_AUTH_SHARED_KEY:
- if (ifsta->auth_transaction == 4)
- ieee80211_auth_completed(dev, ifsta);
- else
- ieee80211_auth_challenge(dev, ifsta, mgmt, len);
- break;
- }
-}
-
-
-static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u16 reason_code;
- DECLARE_MAC_BUF(mac);
-
- if (len < 24 + 2) {
- printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: deauthentication frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
-
- printk(KERN_DEBUG "%s: RX deauthentication from %s"
- " (reason=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), reason_code);
-
- if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) {
- printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
- }
-
- if (ifsta->state == IEEE80211_AUTHENTICATE ||
- ifsta->state == IEEE80211_ASSOCIATE ||
- ifsta->state == IEEE80211_ASSOCIATED) {
- ifsta->state = IEEE80211_AUTHENTICATE;
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_RETRY_AUTH_INTERVAL);
- }
-
- ieee80211_set_disassoc(dev, ifsta, 1);
- ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
-}
-
-
-static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u16 reason_code;
- DECLARE_MAC_BUF(mac);
-
- if (len < 24 + 2) {
- printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: disassociation frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
-
- printk(KERN_DEBUG "%s: RX disassociation from %s"
- " (reason=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), reason_code);
-
- if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
- printk(KERN_DEBUG "%s: disassociated\n", dev->name);
-
- if (ifsta->state == IEEE80211_ASSOCIATED) {
- ifsta->state = IEEE80211_ASSOCIATE;
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_RETRY_AUTH_INTERVAL);
- }
-
- ieee80211_set_disassoc(dev, ifsta, 0);
-}
-
-
-static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- int reassoc)
-{
- struct ieee80211_local *local = sdata->local;
- struct net_device *dev = sdata->dev;
- struct ieee80211_supported_band *sband;
- struct sta_info *sta;
- u64 rates, basic_rates;
- u16 capab_info, status_code, aid;
- struct ieee802_11_elems elems;
- struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
- u8 *pos;
- int i, j;
- DECLARE_MAC_BUF(mac);
- bool have_higher_than_11mbit = false;
-
- /* AssocResp and ReassocResp have identical structure, so process both
- * of them in this function. */
-
- if (ifsta->state != IEEE80211_ASSOCIATE) {
- printk(KERN_DEBUG "%s: association frame received from "
- "%s, but not in associate state - ignored\n",
- dev->name, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (len < 24 + 6) {
- printk(KERN_DEBUG "%s: too short (%zd) association frame "
- "received from %s - ignored\n",
- dev->name, len, print_mac(mac, mgmt->sa));
- return;
- }
-
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
- printk(KERN_DEBUG "%s: association frame received from "
- "unknown AP (SA=%s BSSID=%s) - "
- "ignored\n", dev->name, print_mac(mac, mgmt->sa),
- print_mac(mac, mgmt->bssid));
- return;
- }
-
- capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
- status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
- aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
-
- printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
- "status=%d aid=%d)\n",
- dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
- capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
-
- if (status_code != WLAN_STATUS_SUCCESS) {
- printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
- dev->name, status_code);
- /* if this was a reassociation, ensure we try a "full"
- * association next time. This works around some broken APs
- * which do not correctly reject reassociation requests. */
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- return;
- }
-
- if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
- printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
- "set\n", dev->name, aid);
- aid &= ~(BIT(15) | BIT(14));
-
- pos = mgmt->u.assoc_resp.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
-
- if (!elems.supp_rates) {
- printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
- dev->name);
- return;
- }
-
- printk(KERN_DEBUG "%s: associated\n", dev->name);
- ifsta->aid = aid;
- ifsta->ap_capab = capab_info;
-
- kfree(ifsta->assocresp_ies);
- ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
- ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
- if (ifsta->assocresp_ies)
- memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
-
- rcu_read_lock();
-
- /* Add STA entry for the AP */
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- struct ieee80211_sta_bss *bss;
- int err;
-
- sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
- if (!sta) {
- printk(KERN_DEBUG "%s: failed to alloc STA entry for"
- " the AP\n", dev->name);
- rcu_read_unlock();
- return;
- }
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- sta->last_rssi = bss->rssi;
- sta->last_signal = bss->signal;
- sta->last_noise = bss->noise;
- ieee80211_rx_bss_put(dev, bss);
- }
-
- err = sta_info_insert(sta);
- if (err) {
- printk(KERN_DEBUG "%s: failed to insert STA entry for"
- " the AP (error %d)\n", dev->name, err);
- rcu_read_unlock();
- return;
- }
- }
-
- /*
- * FIXME: Do we really need to update the sta_info's information here?
- * We already know about the AP (we found it in our list) so it
- * should already be filled with the right info, no?
- * As is stands, all this is racy because typically we assume
- * the information that is filled in here (except flags) doesn't
- * change while a STA structure is alive. As such, it should move
- * to between the sta_info_alloc() and sta_info_insert() above.
- */
-
- sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP |
- WLAN_STA_AUTHORIZED;
-
- rates = 0;
- basic_rates = 0;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- for (i = 0; i < elems.supp_rates_len; i++) {
- int rate = (elems.supp_rates[i] & 0x7f) * 5;
-
- if (rate > 110)
- have_higher_than_11mbit = true;
-
- for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
- rates |= BIT(j);
- if (elems.supp_rates[i] & 0x80)
- basic_rates |= BIT(j);
- }
- }
-
- for (i = 0; i < elems.ext_supp_rates_len; i++) {
- int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
-
- if (rate > 110)
- have_higher_than_11mbit = true;
-
- for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
- rates |= BIT(j);
- if (elems.ext_supp_rates[i] & 0x80)
- basic_rates |= BIT(j);
- }
- }
-
- sta->supp_rates[local->hw.conf.channel->band] = rates;
- sdata->basic_rates = basic_rates;
-
- /* cf. IEEE 802.11 9.2.12 */
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
-
- if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) {
- struct ieee80211_ht_bss_info bss_info;
- ieee80211_ht_cap_ie_to_ht_info(
- (struct ieee80211_ht_cap *)
- elems.ht_cap_elem, &sta->ht_info);
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
- }
-
- rate_control_rate_init(sta, local);
-
- if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- sta->flags |= WLAN_STA_WME;
- rcu_read_unlock();
- ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
- elems.wmm_param_len);
- } else
- rcu_read_unlock();
-
- /* set AID and assoc capability,
- * ieee80211_set_associated() will tell the driver */
- bss_conf->aid = aid;
- bss_conf->assoc_capability = capab_info;
- ieee80211_set_associated(dev, ifsta, 1);
-
- ieee80211_associated(dev, ifsta);
-}
-
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- u8 hash_idx;
-
- if (bss_mesh_cfg(bss))
- hash_idx = mesh_id_hash(bss_mesh_id(bss),
- bss_mesh_id_len(bss));
- else
- hash_idx = STA_HASH(bss->bssid);
-
- bss->hnext = local->sta_bss_hash[hash_idx];
- local->sta_bss_hash[hash_idx] = bss;
-}
-
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *b, *prev = NULL;
- b = local->sta_bss_hash[STA_HASH(bss->bssid)];
- while (b) {
- if (b == bss) {
- if (!prev)
- local->sta_bss_hash[STA_HASH(bss->bssid)] =
- bss->hnext;
- else
- prev->hnext = bss->hnext;
- break;
- }
- prev = b;
- b = b->hnext;
- }
-}
-
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
- atomic_inc(&bss->users);
- atomic_inc(&bss->users);
- memcpy(bss->bssid, bssid, ETH_ALEN);
- bss->freq = freq;
- if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
- memcpy(bss->ssid, ssid, ssid_len);
- bss->ssid_len = ssid_len;
- }
-
- spin_lock_bh(&local->sta_bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->sta_bss_list);
- __ieee80211_rx_bss_hash_add(dev, bss);
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- bss = local->sta_bss_hash[STA_HASH(bssid)];
- while (bss) {
- if (!bss_mesh_cfg(bss) &&
- !memcmp(bss->bssid, bssid, ETH_ALEN) &&
- bss->freq == freq &&
- bss->ssid_len == ssid_len &&
- (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-#ifdef CONFIG_MAC80211_MESH
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int freq)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
- while (bss) {
- if (bss_mesh_cfg(bss) &&
- !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
- bss->freq == freq &&
- mesh_id_len == bss->mesh_id_len &&
- (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
- mesh_id_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int mesh_config_len, int freq)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
-
- if (mesh_config_len != MESH_CFG_LEN)
- return NULL;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
-
- bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
- if (!bss->mesh_cfg) {
- kfree(bss);
- return NULL;
- }
-
- if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
- bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
- if (!bss->mesh_id) {
- kfree(bss->mesh_cfg);
- kfree(bss);
- return NULL;
- }
- memcpy(bss->mesh_id, mesh_id, mesh_id_len);
- }
-
- atomic_inc(&bss->users);
- atomic_inc(&bss->users);
- memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
- bss->mesh_id_len = mesh_id_len;
- bss->freq = freq;
- spin_lock_bh(&local->sta_bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->sta_bss_list);
- __ieee80211_rx_bss_hash_add(dev, bss);
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-#endif
-
-static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
-{
- kfree(bss->wpa_ie);
- kfree(bss->rsn_ie);
- kfree(bss->wmm_ie);
- kfree(bss->ht_ie);
- kfree(bss_mesh_id(bss));
- kfree(bss_mesh_cfg(bss));
- kfree(bss);
-}
-
-
-static void ieee80211_rx_bss_put(struct net_device *dev,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- if (!atomic_dec_and_test(&bss->users))
- return;
-
- spin_lock_bh(&local->sta_bss_lock);
- __ieee80211_rx_bss_hash_del(dev, bss);
- list_del(&bss->list);
- spin_unlock_bh(&local->sta_bss_lock);
- ieee80211_rx_bss_free(bss);
-}
-
-
-void ieee80211_rx_bss_list_init(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- spin_lock_init(&local->sta_bss_lock);
- INIT_LIST_HEAD(&local->sta_bss_list);
-}
-
-
-void ieee80211_rx_bss_list_deinit(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss, *tmp;
-
- list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
- ieee80211_rx_bss_put(dev, bss);
-}
-
-
-static int ieee80211_sta_join_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int res, rates, i, j;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- struct ieee80211_tx_control control;
- struct rate_selection ratesel;
- u8 *pos;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_supported_band *sband;
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- /* Remove possible STA entries from other IBSS networks. */
- sta_info_flush_delayed(sdata);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
- }
- memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
- res = ieee80211_if_config(dev);
- if (res)
- return res;
-
- local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
-
- sdata->drop_unencrypted = bss->capability &
- WLAN_CAPABILITY_PRIVACY ? 1 : 0;
-
- res = ieee80211_set_freq(local, bss->freq);
-
- if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
- "%d MHz\n", dev->name, local->oper_channel->center_freq);
- return -1;
- }
-
- /* Set beacon template */
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
- do {
- if (!skb)
- break;
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *)
- skb_put(skb, 24 + sizeof(mgmt->u.beacon));
- memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_BEACON);
- memset(mgmt->da, 0xff, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.beacon.beacon_int =
- cpu_to_le16(local->hw.conf.beacon_int);
- mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
-
- pos = skb_put(skb, 2 + ifsta->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
-
- rates = bss->supp_rates_len;
- if (rates > 8)
- rates = 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, bss->supp_rates, rates);
-
- if (bss->band == IEEE80211_BAND_2GHZ) {
- pos = skb_put(skb, 2 + 1);
- *pos++ = WLAN_EID_DS_PARAMS;
- *pos++ = 1;
- *pos++ = ieee80211_frequency_to_channel(bss->freq);
- }
-
- pos = skb_put(skb, 2 + 2);
- *pos++ = WLAN_EID_IBSS_PARAMS;
- *pos++ = 2;
- /* FIX: set ATIM window based on scan results */
- *pos++ = 0;
- *pos++ = 0;
-
- if (bss->supp_rates_len > 8) {
- rates = bss->supp_rates_len - 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, &bss->supp_rates[8], rates);
- }
-
- memset(&control, 0, sizeof(control));
- rate_control_get_rate(dev, sband, skb, &ratesel);
- if (!ratesel.rate) {
- printk(KERN_DEBUG "%s: Failed to determine TX rate "
- "for IBSS beacon\n", dev->name);
- break;
- }
- control.vif = &sdata->vif;
- control.tx_rate = ratesel.rate;
- if (sdata->bss_conf.use_short_preamble &&
- ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
- control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
- control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control.flags |= IEEE80211_TXCTL_NO_ACK;
- control.retry_limit = 1;
-
- ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
- if (ifsta->probe_resp) {
- mgmt = (struct ieee80211_mgmt *)
- ifsta->probe_resp->data;
- mgmt->frame_control =
- IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_PROBE_RESP);
- } else {
- printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
- "template for IBSS\n", dev->name);
- }
-
- if (local->ops->beacon_update &&
- local->ops->beacon_update(local_to_hw(local),
- skb, &control) == 0) {
- printk(KERN_DEBUG "%s: Configured IBSS beacon "
- "template\n", dev->name);
- skb = NULL;
- }
-
- rates = 0;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- for (i = 0; i < bss->supp_rates_len; i++) {
- int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < sband->n_bitrates; j++)
- if (sband->bitrates[j].bitrate == bitrate)
- rates |= BIT(j);
- }
- ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
-
- ieee80211_sta_def_wmm_params(dev, bss, 1);
- } while (0);
-
- if (skb) {
- printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
- "template\n", dev->name);
- dev_kfree_skb(skb);
- }
-
- ifsta->state = IEEE80211_IBSS_JOINED;
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_rx_bss_put(dev, bss);
-
- return res;
-}
-
-u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
- struct ieee802_11_elems *elems,
- enum ieee80211_band band)
-{
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *bitrates;
- size_t num_rates;
- u64 supp_rates;
- int i, j;
- sband = local->hw.wiphy->bands[band];
-
- if (!sband) {
- WARN_ON(1);
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- }
-
- bitrates = sband->bitrates;
- num_rates = sband->n_bitrates;
- supp_rates = 0;
- for (i = 0; i < elems->supp_rates_len +
- elems->ext_supp_rates_len; i++) {
- u8 rate = 0;
- int own_rate;
- if (i < elems->supp_rates_len)
- rate = elems->supp_rates[i];
- else if (elems->ext_supp_rates)
- rate = elems->ext_supp_rates
- [i - elems->supp_rates_len];
- own_rate = 5 * (rate & 0x7f);
- for (j = 0; j < num_rates; j++)
- if (bitrates[j].bitrate == own_rate)
- supp_rates |= BIT(j);
- }
- return supp_rates;
-}
-
-
-static void ieee80211_rx_bss_info(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status,
- int beacon)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee802_11_elems elems;
- size_t baselen;
- int freq, clen;
- struct ieee80211_sta_bss *bss;
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- u64 beacon_timestamp, rx_timestamp;
- struct ieee80211_channel *channel;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
-
- if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
- return; /* ignore ProbeResp to foreign address */
-
-#if 0
- printk(KERN_DEBUG "%s: RX %s from %s to %s\n",
- dev->name, beacon ? "Beacon" : "Probe Response",
- print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da));
-#endif
-
- baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
- if (baselen > len)
- return;
-
- beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
- ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
-
- if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id &&
- elems.mesh_config && mesh_matches_local(&elems, dev)) {
- u64 rates = ieee80211_sta_get_rates(local, &elems,
- rx_status->band);
-
- mesh_neighbour_update(mgmt->sa, rates, dev,
- mesh_peer_accepts_plinks(&elems, dev));
- }
-
- rcu_read_lock();
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
- memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
- (sta = sta_info_get(local, mgmt->sa))) {
- u64 prev_rates;
- u64 supp_rates = ieee80211_sta_get_rates(local, &elems,
- rx_status->band);
-
- prev_rates = sta->supp_rates[rx_status->band];
- sta->supp_rates[rx_status->band] &= supp_rates;
- if (sta->supp_rates[rx_status->band] == 0) {
- /* No matching rates - this should not really happen.
- * Make sure that at least one rate is marked
- * supported to avoid issues with TX rate ctrl. */
- sta->supp_rates[rx_status->band] =
- sdata->u.sta.supp_rates_bits[rx_status->band];
- }
- if (sta->supp_rates[rx_status->band] != prev_rates) {
- printk(KERN_DEBUG "%s: updated supp_rates set for "
- "%s based on beacon info (0x%llx & 0x%llx -> "
- "0x%llx)\n",
- dev->name, print_mac(mac, sta->addr),
- (unsigned long long) prev_rates,
- (unsigned long long) supp_rates,
- (unsigned long long) sta->supp_rates[rx_status->band]);
- }
- }
-
- rcu_read_unlock();
-
- if (elems.ds_params && elems.ds_params_len == 1)
- freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
- else
- freq = rx_status->freq;
-
- channel = ieee80211_get_channel(local->hw.wiphy, freq);
-
- if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
- return;
-
-#ifdef CONFIG_MAC80211_MESH
- if (elems.mesh_config)
- bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id,
- elems.mesh_id_len, elems.mesh_config, freq);
- else
-#endif
- bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq,
- elems.ssid, elems.ssid_len);
- if (!bss) {
-#ifdef CONFIG_MAC80211_MESH
- if (elems.mesh_config)
- bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id,
- elems.mesh_id_len, elems.mesh_config,
- elems.mesh_config_len, freq);
- else
-#endif
- bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq,
- elems.ssid, elems.ssid_len);
- if (!bss)
- return;
- } else {
-#if 0
- /* TODO: order by RSSI? */
- spin_lock_bh(&local->sta_bss_lock);
- list_move_tail(&bss->list, &local->sta_bss_list);
- spin_unlock_bh(&local->sta_bss_lock);
-#endif
- }
-
- bss->band = rx_status->band;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- bss->probe_resp && beacon) {
- /* STA mode:
- * Do not allow beacon to override data from Probe Response. */
- ieee80211_rx_bss_put(dev, bss);
- return;
- }
-
- /* save the ERP value so that it is available at association time */
- if (elems.erp_info && elems.erp_info_len >= 1) {
- bss->erp_value = elems.erp_info[0];
- bss->has_erp_value = 1;
- }
-
- bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
- bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-
- bss->supp_rates_len = 0;
- if (elems.supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems.supp_rates_len)
- clen = elems.supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
- clen);
- bss->supp_rates_len += clen;
- }
- if (elems.ext_supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems.ext_supp_rates_len)
- clen = elems.ext_supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len],
- elems.ext_supp_rates, clen);
- bss->supp_rates_len += clen;
- }
-
- if (elems.wpa &&
- (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
- memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
- kfree(bss->wpa_ie);
- bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
- if (bss->wpa_ie) {
- memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
- bss->wpa_ie_len = elems.wpa_len + 2;
- } else
- bss->wpa_ie_len = 0;
- } else if (!elems.wpa && bss->wpa_ie) {
- kfree(bss->wpa_ie);
- bss->wpa_ie = NULL;
- bss->wpa_ie_len = 0;
- }
-
- if (elems.rsn &&
- (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
- memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
- kfree(bss->rsn_ie);
- bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
- if (bss->rsn_ie) {
- memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
- bss->rsn_ie_len = elems.rsn_len + 2;
- } else
- bss->rsn_ie_len = 0;
- } else if (!elems.rsn && bss->rsn_ie) {
- kfree(bss->rsn_ie);
- bss->rsn_ie = NULL;
- bss->rsn_ie_len = 0;
- }
-
- if (elems.wmm_param &&
- (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
- memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
- kfree(bss->wmm_ie);
- bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
- if (bss->wmm_ie) {
- memcpy(bss->wmm_ie, elems.wmm_param - 2,
- elems.wmm_param_len + 2);
- bss->wmm_ie_len = elems.wmm_param_len + 2;
- } else
- bss->wmm_ie_len = 0;
- } else if (!elems.wmm_param && bss->wmm_ie) {
- kfree(bss->wmm_ie);
- bss->wmm_ie = NULL;
- bss->wmm_ie_len = 0;
- }
- if (elems.ht_cap_elem &&
- (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
- memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
- kfree(bss->ht_ie);
- bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
- if (bss->ht_ie) {
- memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
- elems.ht_cap_elem_len + 2);
- bss->ht_ie_len = elems.ht_cap_elem_len + 2;
- } else
- bss->ht_ie_len = 0;
- } else if (!elems.ht_cap_elem && bss->ht_ie) {
- kfree(bss->ht_ie);
- bss->ht_ie = NULL;
- bss->ht_ie_len = 0;
- }
-
- bss->timestamp = beacon_timestamp;
- bss->last_update = jiffies;
- bss->rssi = rx_status->ssi;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- if (!beacon)
- bss->probe_resp++;
-
- /* check if we need to merge IBSS */
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
- !local->sta_sw_scanning && !local->sta_hw_scanning &&
- bss->capability & WLAN_CAPABILITY_IBSS &&
- bss->freq == local->oper_channel->center_freq &&
- elems.ssid_len == sdata->u.sta.ssid_len &&
- memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) {
- if (rx_status->flag & RX_FLAG_TSFT) {
- /* in order for correct IBSS merging we need mactime
- *
- * since mactime is defined as the time the first data
- * symbol of the frame hits the PHY, and the timestamp
- * of the beacon is defined as "the time that the data
- * symbol containing the first bit of the timestamp is
- * transmitted to the PHY plus the transmitting STA’s
- * delays through its local PHY from the MAC-PHY
- * interface to its interface with the WM"
- * (802.11 11.1.2) - equals the time this bit arrives at
- * the receiver - we have to take into account the
- * offset between the two.
- * e.g: at 1 MBit that means mactime is 192 usec earlier
- * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
- */
- int rate = local->hw.wiphy->bands[rx_status->band]->
- bitrates[rx_status->rate_idx].bitrate;
- rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate);
- } else if (local && local->ops && local->ops->get_tsf)
- /* second best option: get current TSF */
- rx_timestamp = local->ops->get_tsf(local_to_hw(local));
- else
- /* can't merge without knowing the TSF */
- rx_timestamp = -1LLU;
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "RX beacon SA=%s BSSID="
- "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
- print_mac(mac, mgmt->sa),
- print_mac(mac2, mgmt->bssid),
- (unsigned long long)rx_timestamp,
- (unsigned long long)beacon_timestamp,
- (unsigned long long)(rx_timestamp - beacon_timestamp),
- jiffies);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (beacon_timestamp > rx_timestamp) {
-#ifndef CONFIG_MAC80211_IBSS_DEBUG
- if (net_ratelimit())
-#endif
- printk(KERN_DEBUG "%s: beacon TSF higher than "
- "local TSF - IBSS merge with BSSID %s\n",
- dev->name, print_mac(mac, mgmt->bssid));
- ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss);
- ieee80211_ibss_add_sta(dev, NULL,
- mgmt->bssid, mgmt->sa);
- }
- }
-
- ieee80211_rx_bss_put(dev, bss);
-}
-
-
-static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
-}
-
-
-static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- size_t baselen;
- struct ieee802_11_elems elems;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_conf *conf = &local->hw.conf;
- u32 changed = 0;
-
- ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
- ifsta = &sdata->u.sta;
-
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
- return;
-
- /* Process beacon from the current BSS */
- baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
- if (baselen > len)
- return;
-
- ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
-
- if (elems.erp_info && elems.erp_info_len >= 1)
- changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
-
- if (elems.ht_cap_elem && elems.ht_info_elem &&
- elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
- struct ieee80211_ht_bss_info bss_info;
-
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
- &bss_info);
- }
-
- if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
- elems.wmm_param_len);
- }
-
- ieee80211_bss_info_change_notify(sdata, changed);
-}
-
-
-static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- int tx_last_beacon;
- struct sk_buff *skb;
- struct ieee80211_mgmt *resp;
- u8 *pos, *end;
- DECLARE_MAC_BUF(mac);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- DECLARE_MAC_BUF(mac2);
- DECLARE_MAC_BUF(mac3);
-#endif
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS ||
- ifsta->state != IEEE80211_IBSS_JOINED ||
- len < 24 + 2 || !ifsta->probe_resp)
- return;
-
- if (local->ops->tx_last_beacon)
- tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
- else
- tx_last_beacon = 1;
-
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
- "%s (tx_last_beacon=%d)\n",
- dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
- print_mac(mac3, mgmt->bssid), tx_last_beacon);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
-
- if (!tx_last_beacon)
- return;
-
- if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
- memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
- return;
-
- end = ((u8 *) mgmt) + len;
- pos = mgmt->u.probe_req.variable;
- if (pos[0] != WLAN_EID_SSID ||
- pos + 2 + pos[1] > end) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
- "from %s\n",
- dev->name, print_mac(mac, mgmt->sa));
- }
- return;
- }
- if (pos[1] != 0 &&
- (pos[1] != ifsta->ssid_len ||
- memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
- /* Ignore ProbeReq for foreign SSID */
- return;
- }
-
- /* Reply with ProbeResp */
- skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
- if (!skb)
- return;
-
- resp = (struct ieee80211_mgmt *) skb->data;
- memcpy(resp->da, mgmt->sa, ETH_ALEN);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
- dev->name, print_mac(mac, resp->da));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- ieee80211_sta_tx(dev, skb, 0);
-}
-
-static void ieee80211_rx_mgmt_action(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (len < IEEE80211_MIN_ACTION_SIZE)
- return;
-
- switch (mgmt->u.action.category) {
- case WLAN_CATEGORY_BACK:
- switch (mgmt->u.action.u.addba_req.action_code) {
- case WLAN_ACTION_ADDBA_REQ:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.addba_req)))
- break;
- ieee80211_sta_process_addba_request(dev, mgmt, len);
- break;
- case WLAN_ACTION_ADDBA_RESP:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.addba_resp)))
- break;
- ieee80211_sta_process_addba_resp(dev, mgmt, len);
- break;
- case WLAN_ACTION_DELBA:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.delba)))
- break;
- ieee80211_sta_process_delba(dev, mgmt, len);
- break;
- default:
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n",
- dev->name);
- break;
- }
- break;
- case PLINK_CATEGORY:
- if (ieee80211_vif_is_mesh(&sdata->vif))
- mesh_rx_plink_frame(dev, mgmt, len, rx_status);
- break;
- case MESH_PATH_SEL_CATEGORY:
- if (ieee80211_vif_is_mesh(&sdata->vif))
- mesh_rx_path_sel_frame(dev, mgmt, len);
- break;
- default:
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: Rx unknown action frame - "
- "category=%d\n", dev->name, mgmt->u.action.category);
- break;
- }
-}
-
-void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- if (skb->len < 24)
- goto fail;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- switch (fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_PROBE_REQ:
- case IEEE80211_STYPE_PROBE_RESP:
- case IEEE80211_STYPE_BEACON:
- case IEEE80211_STYPE_ACTION:
- memcpy(skb->cb, rx_status, sizeof(*rx_status));
- case IEEE80211_STYPE_AUTH:
- case IEEE80211_STYPE_ASSOC_RESP:
- case IEEE80211_STYPE_REASSOC_RESP:
- case IEEE80211_STYPE_DEAUTH:
- case IEEE80211_STYPE_DISASSOC:
- skb_queue_tail(&ifsta->skb_queue, skb);
- queue_work(local->hw.workqueue, &ifsta->work);
- return;
- default:
- printk(KERN_DEBUG "%s: received unknown management frame - "
- "stype=%d\n", dev->name,
- (fc & IEEE80211_FCTL_STYPE) >> 4);
- break;
- }
-
- fail:
- kfree_skb(skb);
-}
-
-
-static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
- struct sk_buff *skb)
-{
- struct ieee80211_rx_status *rx_status;
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- rx_status = (struct ieee80211_rx_status *) skb->cb;
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- switch (fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_PROBE_REQ:
- ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
- rx_status);
- break;
- case IEEE80211_STYPE_PROBE_RESP:
- ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_BEACON:
- ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_AUTH:
- ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0);
- break;
- case IEEE80211_STYPE_REASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1);
- break;
- case IEEE80211_STYPE_DEAUTH:
- ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_DISASSOC:
- ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ACTION:
- ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status);
- break;
- }
-
- kfree_skb(skb);
-}
-
-
-ieee80211_rx_result
-ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- if (skb->len < 2)
- return RX_DROP_UNUSABLE;
-
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL)
- return RX_CONTINUE;
-
- if (skb->len < 24)
- return RX_DROP_MONITOR;
-
- if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
- if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
- ieee80211_rx_mgmt_probe_resp(dev, mgmt,
- skb->len, rx_status);
- dev_kfree_skb(skb);
- return RX_QUEUED;
- } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
- ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
- rx_status);
- dev_kfree_skb(skb);
- return RX_QUEUED;
- }
- }
- return RX_CONTINUE;
-}
-
-
-static int ieee80211_sta_active_ibss(struct net_device *dev)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int active = 0;
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- rcu_read_lock();
-
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
- if (sta->sdata == sdata &&
- time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
- jiffies)) {
- active++;
- break;
- }
- }
-
- rcu_read_unlock();
-
- return active;
-}
-
-
-static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta, *tmp;
- LIST_HEAD(tmp_list);
- DECLARE_MAC_BUF(mac);
- unsigned long flags;
-
- spin_lock_irqsave(&local->sta_lock, flags);
- list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
- if (time_after(jiffies, sta->last_rx + exp_time)) {
- printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
- dev->name, print_mac(mac, sta->addr));
- __sta_info_unlink(&sta);
- if (sta)
- list_add(&sta->list, &tmp_list);
- }
- spin_unlock_irqrestore(&local->sta_lock, flags);
-
- list_for_each_entry_safe(sta, tmp, &tmp_list, list)
- sta_info_destroy(sta);
-}
-
-
-static void ieee80211_sta_merge_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT);
- if (ieee80211_sta_active_ibss(dev))
- return;
-
- printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
- "IBSS networks with same SSID (merge)\n", dev->name);
- ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
-}
-
-
-#ifdef CONFIG_MAC80211_MESH
-static void ieee80211_mesh_housekeeping(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- bool free_plinks;
-
- ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
- mesh_path_expire(dev);
-
- free_plinks = mesh_plink_availables(sdata);
- if (free_plinks != sdata->u.sta.accepting_plinks)
- ieee80211_if_config_beacon(dev);
-
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
-}
-
-
-void ieee80211_start_mesh(struct net_device *dev)
-{
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
- ifsta->state = IEEE80211_MESH_UP;
- ieee80211_sta_timer((unsigned long)sdata);
-}
-#endif
-
-
-void ieee80211_sta_timer(unsigned long data)
-{
- struct ieee80211_sub_if_data *sdata =
- (struct ieee80211_sub_if_data *) data;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(&sdata->wdev);
-
- set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
-}
-
-void ieee80211_sta_work(struct work_struct *work)
-{
- struct ieee80211_sub_if_data *sdata =
- container_of(work, struct ieee80211_sub_if_data, u.sta.work);
- struct net_device *dev = sdata->dev;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_sta *ifsta;
- struct sk_buff *skb;
-
- if (!netif_running(dev))
- return;
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) {
- printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
- "(type=%d)\n", dev->name, sdata->vif.type);
- return;
- }
- ifsta = &sdata->u.sta;
-
- while ((skb = skb_dequeue(&ifsta->skb_queue)))
- ieee80211_sta_rx_queued_mgmt(dev, skb);
-
-#ifdef CONFIG_MAC80211_MESH
- if (ifsta->preq_queue_len &&
- time_after(jiffies,
- ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
- mesh_path_start_discovery(dev);
-#endif
-
- if (ifsta->state != IEEE80211_AUTHENTICATE &&
- ifsta->state != IEEE80211_ASSOCIATE &&
- test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- if (ifsta->scan_ssid_len)
- ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
- else
- ieee80211_sta_start_scan(dev, NULL, 0);
- return;
- }
-
- if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
- if (ieee80211_sta_config_auth(dev, ifsta))
- return;
- clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
- return;
-
- switch (ifsta->state) {
- case IEEE80211_DISABLED:
- break;
- case IEEE80211_AUTHENTICATE:
- ieee80211_authenticate(dev, ifsta);
- break;
- case IEEE80211_ASSOCIATE:
- ieee80211_associate(dev, ifsta);
- break;
- case IEEE80211_ASSOCIATED:
- ieee80211_associated(dev, ifsta);
- break;
- case IEEE80211_IBSS_SEARCH:
- ieee80211_sta_find_ibss(dev, ifsta);
- break;
- case IEEE80211_IBSS_JOINED:
- ieee80211_sta_merge_ibss(dev, ifsta);
- break;
-#ifdef CONFIG_MAC80211_MESH
- case IEEE80211_MESH_UP:
- ieee80211_mesh_housekeeping(dev, ifsta);
- break;
-#endif
- default:
- printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
- ifsta->state);
- break;
- }
-
- if (ieee80211_privacy_mismatch(dev, ifsta)) {
- printk(KERN_DEBUG "%s: privacy configuration mismatch and "
- "mixed-cell disabled - disassociate\n", dev->name);
-
- ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
- ieee80211_set_disassoc(dev, ifsta, 0);
- }
-}
-
-
-static void ieee80211_sta_reset_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
- }
-
- ifsta->wmm_last_param_set = -1; /* allow any WMM update */
-
-
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
- ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
- ifsta->auth_alg = WLAN_AUTH_LEAP;
- else
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
- ifsta->auth_alg);
- ifsta->auth_transaction = -1;
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- ifsta->auth_tries = ifsta->assoc_tries = 0;
- netif_carrier_off(dev);
-}
-
-
-void ieee80211_sta_req_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
-
- if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
- IEEE80211_STA_AUTO_BSSID_SEL)) &&
- (ifsta->flags & (IEEE80211_STA_SSID_SET |
- IEEE80211_STA_AUTO_SSID_SEL))) {
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
- }
-}
-
-static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
- const char *ssid, int ssid_len)
-{
- int tmp, hidden_ssid;
-
- if (ssid_len == ifsta->ssid_len &&
- !memcmp(ifsta->ssid, ssid, ssid_len))
- return 1;
-
- if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
- return 0;
-
- hidden_ssid = 1;
- tmp = ssid_len;
- while (tmp--) {
- if (ssid[tmp] != '\0') {
- hidden_ssid = 0;
- break;
- }
- }
-
- if (hidden_ssid && ifsta->ssid_len == ssid_len)
- return 1;
-
- if (ssid_len == 1 && ssid[0] == ' ')
- return 1;
-
- return 0;
-}
-
-static int ieee80211_sta_config_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_sta_bss *bss, *selected = NULL;
- int top_rssi = 0, freq;
-
- if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
- IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) {
- ifsta->state = IEEE80211_AUTHENTICATE;
- ieee80211_sta_reset_auth(dev, ifsta);
- return 0;
- }
-
- spin_lock_bh(&local->sta_bss_lock);
- freq = local->oper_channel->center_freq;
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (!(bss->capability & WLAN_CAPABILITY_ESS))
- continue;
-
- if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
- !!sdata->default_key)
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
- bss->freq != freq)
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
- memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
- !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
- continue;
-
- if (!selected || top_rssi < bss->rssi) {
- selected = bss;
- top_rssi = bss->rssi;
- }
- }
- if (selected)
- atomic_inc(&selected->users);
- spin_unlock_bh(&local->sta_bss_lock);
-
- if (selected) {
- ieee80211_set_freq(local, selected->freq);
- if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
- ieee80211_sta_set_ssid(dev, selected->ssid,
- selected->ssid_len);
- ieee80211_sta_set_bssid(dev, selected->bssid);
- ieee80211_sta_def_wmm_params(dev, selected, 0);
- ieee80211_rx_bss_put(dev, selected);
- ifsta->state = IEEE80211_AUTHENTICATE;
- ieee80211_sta_reset_auth(dev, ifsta);
- return 0;
- } else {
- if (ifsta->state != IEEE80211_AUTHENTICATE) {
- if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_sta_start_scan(dev, NULL, 0);
- else
- ieee80211_sta_start_scan(dev, ifsta->ssid,
- ifsta->ssid_len);
- ifsta->state = IEEE80211_AUTHENTICATE;
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- } else
- ifsta->state = IEEE80211_DISABLED;
- }
- return -1;
-}
-
-
-static int ieee80211_sta_create_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_supported_band *sband;
- u8 bssid[ETH_ALEN], *pos;
- int i;
- DECLARE_MAC_BUF(mac);
-
-#if 0
- /* Easier testing, use fixed BSSID. */
- memset(bssid, 0xfe, ETH_ALEN);
-#else
- /* Generate random, not broadcast, locally administered BSSID. Mix in
- * own MAC address to make sure that devices that do not have proper
- * random number generator get different BSSID. */
- get_random_bytes(bssid, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- bssid[i] ^= dev->dev_addr[i];
- bssid[0] &= ~0x01;
- bssid[0] |= 0x02;
-#endif
-
- printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
- dev->name, print_mac(mac, bssid));
-
- bss = ieee80211_rx_bss_add(dev, bssid,
- local->hw.conf.channel->center_freq,
- sdata->u.sta.ssid, sdata->u.sta.ssid_len);
- if (!bss)
- return -ENOMEM;
-
- bss->band = local->hw.conf.channel->band;
- sband = local->hw.wiphy->bands[bss->band];
-
- if (local->hw.conf.beacon_int == 0)
- local->hw.conf.beacon_int = 10000;
- bss->beacon_int = local->hw.conf.beacon_int;
- bss->last_update = jiffies;
- bss->capability = WLAN_CAPABILITY_IBSS;
- if (sdata->default_key) {
- bss->capability |= WLAN_CAPABILITY_PRIVACY;
- } else
- sdata->drop_unencrypted = 0;
- bss->supp_rates_len = sband->n_bitrates;
- pos = bss->supp_rates;
- for (i = 0; i < sband->n_bitrates; i++) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
- }
-
- return ieee80211_sta_join_ibss(dev, ifsta, bss);
-}
-
-
-static int ieee80211_sta_find_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- int found = 0;
- u8 bssid[ETH_ALEN];
- int active_ibss;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
-
- if (ifsta->ssid_len == 0)
- return -EINVAL;
-
- active_ibss = ieee80211_sta_active_ibss(dev);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
- dev->name, active_ibss);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- spin_lock_bh(&local->sta_bss_lock);
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (ifsta->ssid_len != bss->ssid_len ||
- memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
- || !(bss->capability & WLAN_CAPABILITY_IBSS))
- continue;
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " bssid=%s found\n",
- print_mac(mac, bss->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- memcpy(bssid, bss->bssid, ETH_ALEN);
- found = 1;
- if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
- break;
- }
- spin_unlock_bh(&local->sta_bss_lock);
-
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " sta_find_ibss: selected %s current "
- "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
- (bss = ieee80211_rx_bss_get(dev, bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len))) {
- printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
- " based on configured SSID\n",
- dev->name, print_mac(mac, bssid));
- return ieee80211_sta_join_ibss(dev, ifsta, bss);
- }
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " did not try to join ibss\n");
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
-
- /* Selected IBSS not found in current scan results - try to scan */
- if (ifsta->state == IEEE80211_IBSS_JOINED &&
- !ieee80211_sta_active_ibss(dev)) {
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_IBSS_MERGE_INTERVAL);
- } else if (time_after(jiffies, local->last_scan_completed +
- IEEE80211_SCAN_INTERVAL)) {
- printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
- "join\n", dev->name);
- return ieee80211_sta_req_scan(dev, ifsta->ssid,
- ifsta->ssid_len);
- } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
- int interval = IEEE80211_SCAN_INTERVAL;
-
- if (time_after(jiffies, ifsta->ibss_join_req +
- IEEE80211_IBSS_JOIN_TIMEOUT)) {
- if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
- (!(local->oper_channel->flags &
- IEEE80211_CHAN_NO_IBSS)))
- return ieee80211_sta_create_ibss(dev, ifsta);
- if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on"
- " %d MHz\n", dev->name,
- local->hw.conf.channel->center_freq);
- }
-
- /* No IBSS found - decrease scan interval and continue
- * scanning. */
- interval = IEEE80211_SCAN_INTERVAL_SLOW;
- }
-
- ifsta->state = IEEE80211_IBSS_SEARCH;
- mod_timer(&ifsta->timer, jiffies + interval);
- return 0;
- }
-
- return 0;
-}
-
-
-int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta;
-
- if (len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
-
- ifsta = &sdata->u.sta;
-
- if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
- memcpy(ifsta->ssid, ssid, len);
- memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
- ifsta->ssid_len = len;
-
- if (len)
- ifsta->flags |= IEEE80211_STA_SSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_SSID_SET;
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
- ifsta->ibss_join_req = jiffies;
- ifsta->state = IEEE80211_IBSS_SEARCH;
- return ieee80211_sta_find_ibss(dev, ifsta);
- }
- return 0;
-}
-
-
-int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
- *len = ifsta->ssid_len;
- return 0;
-}
-
-
-int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
-{
- struct ieee80211_sub_if_data *sdata;
- struct ieee80211_if_sta *ifsta;
- int res;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- ifsta = &sdata->u.sta;
-
- if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
- memcpy(ifsta->bssid, bssid, ETH_ALEN);
- res = ieee80211_if_config(dev);
- if (res) {
- printk(KERN_DEBUG "%s: Failed to config new BSSID to "
- "the low-level driver\n", dev->name);
- return res;
- }
- }
-
- if (is_valid_ether_addr(bssid))
- ifsta->flags |= IEEE80211_STA_BSSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
-
- return 0;
-}
-
-
-static void ieee80211_send_nullfunc(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- int powersave)
-{
- struct sk_buff *skb;
- struct ieee80211_hdr *nullfunc;
- u16 fc;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
- "frame\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
- memset(nullfunc, 0, 24);
- fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
- IEEE80211_FCTL_TODS;
- if (powersave)
- fc |= IEEE80211_FCTL_PM;
- nullfunc->frame_control = cpu_to_le16(fc);
- memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
- memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
-
- ieee80211_sta_tx(sdata->dev, skb, 0);
-}
-
-
-static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
-{
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
- ieee80211_vif_is_mesh(&sdata->vif))
- ieee80211_sta_timer((unsigned long)sdata);
-}
-
-void ieee80211_scan_completed(struct ieee80211_hw *hw)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct net_device *dev = local->scan_dev;
- struct ieee80211_sub_if_data *sdata;
- union iwreq_data wrqu;
-
- local->last_scan_completed = jiffies;
- memset(&wrqu, 0, sizeof(wrqu));
- wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
-
- if (local->sta_hw_scanning) {
- local->sta_hw_scanning = 0;
- if (ieee80211_hw_config(local))
- printk(KERN_DEBUG "%s: failed to restore operational "
- "channel after scan\n", dev->name);
- /* Restart STA timer for HW scan case */
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list)
- ieee80211_restart_sta_timer(sdata);
- rcu_read_unlock();
-
- goto done;
- }
-
- local->sta_sw_scanning = 0;
- if (ieee80211_hw_config(local))
- printk(KERN_DEBUG "%s: failed to restore operational "
- "channel after scan\n", dev->name);
-
-
- netif_tx_lock_bh(local->mdev);
- local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
- local->ops->configure_filter(local_to_hw(local),
- FIF_BCN_PRBRESP_PROMISC,
- &local->filter_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
-
- netif_tx_unlock_bh(local->mdev);
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-
- /* No need to wake the master device. */
- if (sdata->dev == local->mdev)
- continue;
-
- /* Tell AP we're back */
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
- sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
- ieee80211_send_nullfunc(local, sdata, 0);
-
- ieee80211_restart_sta_timer(sdata);
-
- netif_wake_queue(sdata->dev);
- }
- rcu_read_unlock();
-
-done:
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
- (!ifsta->state == IEEE80211_IBSS_JOINED &&
- !ieee80211_sta_active_ibss(dev)))
- ieee80211_sta_find_ibss(dev, ifsta);
- }
-}
-EXPORT_SYMBOL(ieee80211_scan_completed);
-
-void ieee80211_sta_scan_work(struct work_struct *work)
-{
- struct ieee80211_local *local =
- container_of(work, struct ieee80211_local, scan_work.work);
- struct net_device *dev = local->scan_dev;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_supported_band *sband;
- struct ieee80211_channel *chan;
- int skip;
- unsigned long next_delay = 0;
-
- if (!local->sta_sw_scanning)
- return;
-
- switch (local->scan_state) {
- case SCAN_SET_CHANNEL:
- /*
- * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
- * after we successfully scanned the last channel of the last
- * band (and the last band is supported by the hw)
- */
- if (local->scan_band < IEEE80211_NUM_BANDS)
- sband = local->hw.wiphy->bands[local->scan_band];
- else
- sband = NULL;
-
- /*
- * If we are at an unsupported band and have more bands
- * left to scan, advance to the next supported one.
- */
- while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
- local->scan_band++;
- sband = local->hw.wiphy->bands[local->scan_band];
- local->scan_channel_idx = 0;
- }
-
- /* if no more bands/channels left, complete scan */
- if (!sband || local->scan_channel_idx >= sband->n_channels) {
- ieee80211_scan_completed(local_to_hw(local));
- return;
- }
- skip = 0;
- chan = &sband->channels[local->scan_channel_idx];
-
- if (chan->flags & IEEE80211_CHAN_DISABLED ||
- (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- chan->flags & IEEE80211_CHAN_NO_IBSS))
- skip = 1;
-
- if (!skip) {
- local->scan_channel = chan;
- if (ieee80211_hw_config(local)) {
- printk(KERN_DEBUG "%s: failed to set freq to "
- "%d MHz for scan\n", dev->name,
- chan->center_freq);
- skip = 1;
- }
- }
-
- /* advance state machine to next channel/band */
- local->scan_channel_idx++;
- if (local->scan_channel_idx >= sband->n_channels) {
- /*
- * scan_band may end up == IEEE80211_NUM_BANDS, but
- * we'll catch that case above and complete the scan
- * if that is the case.
- */
- local->scan_band++;
- local->scan_channel_idx = 0;
- }
-
- if (skip)
- break;
-
- next_delay = IEEE80211_PROBE_DELAY +
- usecs_to_jiffies(local->hw.channel_change_time);
- local->scan_state = SCAN_SEND_PROBE;
- break;
- case SCAN_SEND_PROBE:
- next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
- local->scan_state = SCAN_SET_CHANNEL;
-
- if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
- break;
- ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
- local->scan_ssid_len);
- next_delay = IEEE80211_CHANNEL_TIME;
- break;
- }
-
- if (local->sta_sw_scanning)
- queue_delayed_work(local->hw.workqueue, &local->scan_work,
- next_delay);
-}
-
-
-static int ieee80211_sta_start_scan(struct net_device *dev,
- u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
-
- if (ssid_len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
-
- /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
- * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
- * BSSID: MACAddress
- * SSID
- * ScanType: ACTIVE, PASSIVE
- * ProbeDelay: delay (in microseconds) to be used prior to transmitting
- * a Probe frame during active scanning
- * ChannelList
- * MinChannelTime (>= ProbeDelay), in TU
- * MaxChannelTime: (>= MinChannelTime), in TU
- */
-
- /* MLME-SCAN.confirm
- * BSSDescriptionSet
- * ResultCode: SUCCESS, INVALID_PARAMETERS
- */
-
- if (local->sta_sw_scanning || local->sta_hw_scanning) {
- if (local->scan_dev == dev)
- return 0;
- return -EBUSY;
- }
-
- if (local->ops->hw_scan) {
- int rc = local->ops->hw_scan(local_to_hw(local),
- ssid, ssid_len);
- if (!rc) {
- local->sta_hw_scanning = 1;
- local->scan_dev = dev;
- }
- return rc;
- }
-
- local->sta_sw_scanning = 1;
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-
- /* Don't stop the master interface, otherwise we can't transmit
- * probes! */
- if (sdata->dev == local->mdev)
- continue;
-
- netif_stop_queue(sdata->dev);
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
- (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
- ieee80211_send_nullfunc(local, sdata, 1);
- }
- rcu_read_unlock();
-
- if (ssid) {
- local->scan_ssid_len = ssid_len;
- memcpy(local->scan_ssid, ssid, ssid_len);
- } else
- local->scan_ssid_len = 0;
- local->scan_state = SCAN_SET_CHANNEL;
- local->scan_channel_idx = 0;
- local->scan_band = IEEE80211_BAND_2GHZ;
- local->scan_dev = dev;
-
- netif_tx_lock_bh(local->mdev);
- local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
- local->ops->configure_filter(local_to_hw(local),
- FIF_BCN_PRBRESP_PROMISC,
- &local->filter_flags,
- local->mdev->mc_count,
- local->mdev->mc_list);
- netif_tx_unlock_bh(local->mdev);
-
- /* TODO: start scan as soon as all nullfunc frames are ACKed */
- queue_delayed_work(local->hw.workqueue, &local->scan_work,
- IEEE80211_CHANNEL_TIME);
-
- return 0;
-}
-
-
-int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return ieee80211_sta_start_scan(dev, ssid, ssid_len);
-
- if (local->sta_sw_scanning || local->sta_hw_scanning) {
- if (local->scan_dev == dev)
- return 0;
- return -EBUSY;
- }
-
- ifsta->scan_ssid_len = ssid_len;
- if (ssid_len)
- memcpy(ifsta->scan_ssid, ssid, ssid_len);
- set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
- return 0;
-}
-
-static char *
-ieee80211_sta_scan_result(struct net_device *dev,
- struct ieee80211_sta_bss *bss,
- char *current_ev, char *end_buf)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct iw_event iwe;
-
- if (time_after(jiffies,
- bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
- return current_ev;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWAP;
- iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_ADDR_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWESSID;
- if (bss_mesh_cfg(bss)) {
- iwe.u.data.length = bss_mesh_id_len(bss);
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss_mesh_id(bss));
- } else {
- iwe.u.data.length = bss->ssid_len;
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->ssid);
- }
-
- if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
- || bss_mesh_cfg(bss)) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWMODE;
- if (bss_mesh_cfg(bss))
- iwe.u.mode = IW_MODE_MESH;
- else if (bss->capability & WLAN_CAPABILITY_ESS)
- iwe.u.mode = IW_MODE_MASTER;
- else
- iwe.u.mode = IW_MODE_ADHOC;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_UINT_LEN);
- }
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = bss->freq;
- iwe.u.freq.e = 6;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
- iwe.u.freq.e = 0;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_FREQ_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVQUAL;
- iwe.u.qual.qual = bss->signal;
- iwe.u.qual.level = bss->rssi;
- iwe.u.qual.noise = bss->noise;
- iwe.u.qual.updated = local->wstats_flags;
- current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
- IW_EV_QUAL_LEN);
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWENCODE;
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
- iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- else
- iwe.u.data.flags = IW_ENCODE_DISABLED;
- iwe.u.data.length = 0;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
-
- if (bss && bss->wpa_ie) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = bss->wpa_ie_len;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->wpa_ie);
- }
-
- if (bss && bss->rsn_ie) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVGENIE;
- iwe.u.data.length = bss->rsn_ie_len;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->rsn_ie);
- }
-
- if (bss && bss->supp_rates_len > 0) {
- /* display all supported rates in readable format */
- char *p = current_ev + IW_EV_LCP_LEN;
- int i;
-
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = SIOCGIWRATE;
- /* Those two flags are ignored... */
- iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
-
- for (i = 0; i < bss->supp_rates_len; i++) {
- iwe.u.bitrate.value = ((bss->supp_rates[i] &
- 0x7f) * 500000);
- p = iwe_stream_add_value(current_ev, p,
- end_buf, &iwe, IW_EV_PARAM_LEN);
- }
- current_ev = p;
- }
-
- if (bss) {
- char *buf;
- buf = kmalloc(30, GFP_ATOMIC);
- if (buf) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- kfree(buf);
- }
- }
-
- if (bss_mesh_cfg(bss)) {
- char *buf;
- u8 *cfg = bss_mesh_cfg(bss);
- buf = kmalloc(50, GFP_ATOMIC);
- if (buf) {
- memset(&iwe, 0, sizeof(iwe));
- iwe.cmd = IWEVCUSTOM;
- sprintf(buf, "Mesh network (version %d)", cfg[0]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- sprintf(buf, "Path Selection Protocol ID: "
- "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
- cfg[4]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- sprintf(buf, "Path Selection Metric ID: "
- "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
- cfg[8]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- sprintf(buf, "Congestion Control Mode ID: "
- "0x%02X%02X%02X%02X", cfg[9], cfg[10],
- cfg[11], cfg[12]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- sprintf(buf, "Channel Precedence: "
- "0x%02X%02X%02X%02X", cfg[13], cfg[14],
- cfg[15], cfg[16]);
- iwe.u.data.length = strlen(buf);
- current_ev = iwe_stream_add_point(current_ev, end_buf,
- &iwe, buf);
- kfree(buf);
- }
- }
-
- return current_ev;
-}
-
-
-int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- char *current_ev = buf;
- char *end_buf = buf + len;
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
- spin_unlock_bh(&local->sta_bss_lock);
- return -E2BIG;
- }
- current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
- end_buf);
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return current_ev - buf;
-}
-
-
-int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- kfree(ifsta->extra_ie);
- if (len == 0) {
- ifsta->extra_ie = NULL;
- ifsta->extra_ie_len = 0;
- return 0;
- }
- ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
- if (!ifsta->extra_ie) {
- ifsta->extra_ie_len = 0;
- return -ENOMEM;
- }
- memcpy(ifsta->extra_ie, ie, len);
- ifsta->extra_ie_len = len;
- return 0;
-}
-
-
-struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
- struct sk_buff *skb, u8 *bssid,
- u8 *addr)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sta_info *sta;
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- DECLARE_MAC_BUF(mac);
-
- /* TODO: Could consider removing the least recently used entry and
- * allow new one to be added. */
- if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: No room for a new IBSS STA "
- "entry %s\n", dev->name, print_mac(mac, addr));
- }
- return NULL;
- }
-
- printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
-
- sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
- if (!sta)
- return NULL;
-
- sta->flags |= WLAN_STA_AUTHORIZED;
-
- sta->supp_rates[local->hw.conf.channel->band] =
- sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
-
- rate_control_rate_init(sta, local);
-
- if (sta_info_insert(sta))
- return NULL;
-
- return sta;
-}
-
-
-int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-
- printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
- dev->name, reason);
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
- return -EINVAL;
-
- ieee80211_send_deauth(dev, ifsta, reason);
- ieee80211_set_disassoc(dev, ifsta, 1);
- return 0;
-}
-
-
-int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
-{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-
- printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
- dev->name, reason);
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return -EINVAL;
-
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
- return -1;
-
- ieee80211_send_disassoc(dev, ifsta, reason);
- ieee80211_set_disassoc(dev, ifsta, 0);
- return 0;
-}
-
-void ieee80211_notify_mac(struct ieee80211_hw *hw,
- enum ieee80211_notification_types notif_type)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata;
-
- switch (notif_type) {
- case IEEE80211_NOTIFY_RE_ASSOC:
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
- ieee80211_sta_req_auth(sdata->dev,
- &sdata->u.sta);
- }
-
- }
- rcu_read_unlock();
- break;
- }
-}
-EXPORT_SYMBOL(ieee80211_notify_mac);
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+#include "debugfs_netdev.h"
+#include "mesh.h"
+
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+ int i;
+
+ /* Default values for sub-interface parameters */
+ sdata->drop_unencrypted = 0;
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+ skb_queue_head_init(&sdata->fragments[i].skb_list);
+
+ INIT_LIST_HEAD(&sdata->key_list);
+}
+
+static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
+{
+ int i;
+
+ for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+ __skb_queue_purge(&sdata->fragments[i].skb_list);
+ }
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_add(struct net_device *dev, const char *name,
+ struct net_device **new_dev, int type,
+ struct vif_params *params)
+{
+ struct net_device *ndev;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = NULL;
+ int ret;
+
+ ASSERT_RTNL();
+ ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
+ name, ieee80211_if_setup);
+ if (!ndev)
+ return -ENOMEM;
+
+ ret = dev_alloc_name(ndev, ndev->name);
+ if (ret < 0)
+ goto fail;
+
+ memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+ ndev->base_addr = dev->base_addr;
+ ndev->irq = dev->irq;
+ ndev->mem_start = dev->mem_start;
+ ndev->mem_end = dev->mem_end;
+ SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+ ndev->ieee80211_ptr = &sdata->wdev;
+ sdata->wdev.wiphy = local->hw.wiphy;
+ sdata->vif.type = IEEE80211_IF_TYPE_AP;
+ sdata->dev = ndev;
+ sdata->local = local;
+ ieee80211_if_sdata_init(sdata);
+
+ ret = register_netdevice(ndev);
+ if (ret)
+ goto fail;
+
+ ieee80211_debugfs_add_netdev(sdata);
+ ieee80211_if_set_type(ndev, type);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) &&
+ params && params->mesh_id_len)
+ ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
+ params->mesh_id_len,
+ params->mesh_id);
+
+ /* we're under RTNL so all this is fine */
+ if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
+ __ieee80211_if_del(local, sdata);
+ return -ENODEV;
+ }
+ list_add_tail_rcu(&sdata->list, &local->interfaces);
+
+ if (new_dev)
+ *new_dev = ndev;
+
+ return 0;
+
+fail:
+ free_netdev(ndev);
+ return ret;
+}
+
+void ieee80211_if_set_type(struct net_device *dev, int type)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int oldtype = sdata->vif.type;
+
+ /*
+ * We need to call this function on the master interface
+ * which already has a hard_start_xmit routine assigned
+ * which must not be changed.
+ */
+ if (dev != sdata->local->mdev)
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+
+ /*
+ * Called even when register_netdevice fails, it would
+ * oops if assigned before initialising the rest.
+ */
+ dev->uninit = ieee80211_if_reinit;
+
+ /* most have no BSS pointer */
+ sdata->bss = NULL;
+ sdata->vif.type = type;
+
+ sdata->basic_rates = 0;
+
+ switch (type) {
+ case IEEE80211_IF_TYPE_WDS:
+ /* nothing special */
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ sdata->u.vlan.ap = NULL;
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ sdata->u.ap.force_unicast_rateidx = -1;
+ sdata->u.ap.max_ratectrl_rateidx = -1;
+ skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+ sdata->bss = &sdata->u.ap;
+ INIT_LIST_HEAD(&sdata->u.ap.vlans);
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS: {
+ struct ieee80211_sub_if_data *msdata;
+ struct ieee80211_if_sta *ifsta;
+
+ ifsta = &sdata->u.sta;
+ INIT_WORK(&ifsta->work, ieee80211_sta_work);
+ setup_timer(&ifsta->timer, ieee80211_sta_timer,
+ (unsigned long) sdata);
+ skb_queue_head_init(&ifsta->skb_queue);
+
+ ifsta->capab = WLAN_CAPABILITY_ESS;
+ ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+ IEEE80211_AUTH_ALG_SHARED_KEY;
+ ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
+ IEEE80211_STA_WMM_ENABLED |
+ IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+
+ msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
+ sdata->bss = &msdata->u.ap;
+
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_mesh_init_sdata(sdata);
+ break;
+ }
+ case IEEE80211_IF_TYPE_MNTR:
+ dev->type = ARPHRD_IEEE80211_RADIOTAP;
+ dev->hard_start_xmit = ieee80211_monitor_start_xmit;
+ sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
+ MONITOR_FLAG_OTHER_BSS;
+ break;
+ default:
+ printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
+ dev->name, __func__, type);
+ }
+ ieee80211_debugfs_change_if_type(sdata, oldtype);
+}
+
+/* Must be called with rtnl lock held. */
+void ieee80211_if_reinit(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb;
+ int flushed;
+
+ ASSERT_RTNL();
+
+ ieee80211_free_keys(sdata);
+
+ ieee80211_if_sdata_deinit(sdata);
+
+ /* Need to handle mesh specially to allow eliding the function call */
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rmc_free(dev);
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_INVALID:
+ /* cannot happen */
+ WARN_ON(1);
+ break;
+ case IEEE80211_IF_TYPE_AP: {
+ /* Remove all virtual interfaces that use this BSS
+ * as their sdata->bss */
+ struct ieee80211_sub_if_data *tsdata, *n;
+ struct beacon_data *beacon;
+
+ list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
+ if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
+ printk(KERN_DEBUG "%s: removing virtual "
+ "interface %s because its BSS interface"
+ " is being removed\n",
+ sdata->dev->name, tsdata->dev->name);
+ list_del_rcu(&tsdata->list);
+ /*
+ * We have lots of time and can afford
+ * to sync for each interface
+ */
+ synchronize_rcu();
+ __ieee80211_if_del(local, tsdata);
+ }
+ }
+
+ beacon = sdata->u.ap.beacon;
+ rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ synchronize_rcu();
+ kfree(beacon);
+
+ while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
+ local->total_ps_buffered--;
+ dev_kfree_skb(skb);
+ }
+
+ break;
+ }
+ case IEEE80211_IF_TYPE_WDS:
+ /* nothing to do */
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ kfree(sdata->u.sta.extra_ie);
+ sdata->u.sta.extra_ie = NULL;
+ kfree(sdata->u.sta.assocreq_ies);
+ sdata->u.sta.assocreq_ies = NULL;
+ kfree(sdata->u.sta.assocresp_ies);
+ sdata->u.sta.assocresp_ies = NULL;
+ if (sdata->u.sta.probe_resp) {
+ dev_kfree_skb(sdata->u.sta.probe_resp);
+ sdata->u.sta.probe_resp = NULL;
+ }
+
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ dev->type = ARPHRD_ETHER;
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ sdata->u.vlan.ap = NULL;
+ break;
+ }
+
+ flushed = sta_info_flush(local, sdata);
+ WARN_ON(flushed);
+
+ memset(&sdata->u, 0, sizeof(sdata->u));
+ ieee80211_if_sdata_init(sdata);
+}
+
+/* Must be called with rtnl lock held. */
+void __ieee80211_if_del(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct net_device *dev = sdata->dev;
+
+ ieee80211_debugfs_remove_netdev(sdata);
+ unregister_netdevice(dev);
+ /* Except master interface, the net_device will be freed by
+ * net_device->destructor (i. e. ieee80211_if_free). */
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata, *n;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
+ if ((sdata->vif.type == id || id == -1) &&
+ strcmp(name, sdata->dev->name) == 0 &&
+ sdata->dev != local->mdev) {
+ list_del_rcu(&sdata->list);
+ synchronize_rcu();
+ __ieee80211_if_del(local, sdata);
+ return 0;
+ }
+ }
+ return -ENODEV;
+}
+
+void ieee80211_if_free(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ ieee80211_if_sdata_deinit(sdata);
+ free_netdev(dev);
+}
--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_KEY_H
+#define IEEE80211_KEY_H
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/crypto.h>
+#include <linux/rcupdate.h>
+#include <net/mac80211.h>
+
+/* ALG_TKIP
+ * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
+ * Temporal Encryption Key (128 bits)
+ * Temporal Authenticator Tx MIC Key (64 bits)
+ * Temporal Authenticator Rx MIC Key (64 bits)
+ */
+
+#define WEP_IV_LEN 4
+#define WEP_ICV_LEN 4
+
+#define ALG_TKIP_KEY_LEN 32
+/* Starting offsets for each key */
+#define ALG_TKIP_TEMP_ENCR_KEY 0
+#define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
+#define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
+#define TKIP_IV_LEN 8
+#define TKIP_ICV_LEN 4
+
+#define ALG_CCMP_KEY_LEN 16
+#define CCMP_HDR_LEN 8
+#define CCMP_MIC_LEN 8
+#define CCMP_TK_LEN 16
+#define CCMP_PN_LEN 6
+
+#define NUM_RX_DATA_QUEUES 17
+
+struct ieee80211_local;
+struct ieee80211_sub_if_data;
+struct sta_info;
+
+/**
+ * enum ieee80211_internal_key_flags - internal key flags
+ *
+ * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
+ * in the hardware for TX crypto hardware acceleration.
+ * @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an
+ * RCU grace period, no longer be reachable other than from the
+ * todo list.
+ * @KEY_FLAG_TODO_HWACCEL: Key needs to be added to hardware acceleration.
+ * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated.
+ * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs.
+ */
+enum ieee80211_internal_key_flags {
+ KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
+ KEY_FLAG_TODO_DELETE = BIT(1),
+ KEY_FLAG_TODO_HWACCEL = BIT(2),
+ KEY_FLAG_TODO_DEFKEY = BIT(3),
+ KEY_FLAG_TODO_ADD_DEBUGFS = BIT(4),
+};
+
+struct ieee80211_key {
+ struct ieee80211_local *local;
+ struct ieee80211_sub_if_data *sdata;
+ struct sta_info *sta;
+
+ /* for sdata list */
+ struct list_head list;
+ /* for todo list */
+ struct list_head todo;
+
+ /* protected by todo lock! */
+ unsigned int flags;
+
+ union {
+ struct {
+ /* last used TSC */
+ u32 iv32;
+ u16 iv16;
+ u16 p1k[5];
+ int tx_initialized;
+
+ /* last received RSC */
+ u32 iv32_rx[NUM_RX_DATA_QUEUES];
+ u16 iv16_rx[NUM_RX_DATA_QUEUES];
+ u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
+ int rx_initialized[NUM_RX_DATA_QUEUES];
+ } tkip;
+ struct {
+ u8 tx_pn[6];
+ u8 rx_pn[NUM_RX_DATA_QUEUES][6];
+ struct crypto_cipher *tfm;
+ u32 replays; /* dot11RSNAStatsCCMPReplays */
+ /* scratch buffers for virt_to_page() (crypto API) */
+#ifndef AES_BLOCK_LEN
+#define AES_BLOCK_LEN 16
+#endif
+ u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
+ u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
+ } ccmp;
+ } u;
+
+ /* number of times this key has been used */
+ int tx_rx_count;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct {
+ struct dentry *stalink;
+ struct dentry *dir;
+ struct dentry *keylen;
+ struct dentry *flags;
+ struct dentry *keyidx;
+ struct dentry *hw_key_idx;
+ struct dentry *tx_rx_count;
+ struct dentry *algorithm;
+ struct dentry *tx_spec;
+ struct dentry *rx_spec;
+ struct dentry *replays;
+ struct dentry *key;
+ struct dentry *ifindex;
+ } debugfs;
+#endif
+
+ /*
+ * key config, must be last because it contains key
+ * material as variable length member
+ */
+ struct ieee80211_key_conf conf;
+};
+
+struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
+ int idx,
+ size_t key_len,
+ const u8 *key_data);
+/*
+ * Insert a key into data structures (sdata, sta if necessary)
+ * to make it used, free old key.
+ */
+void ieee80211_key_link(struct ieee80211_key *key,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta);
+void ieee80211_key_free(struct ieee80211_key *key);
+void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
+void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
+void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
+void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
+
+void ieee80211_key_todo(void);
+
+#endif /* IEEE80211_KEY_H */
--- /dev/null
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* just for IFNAMSIZ */
+#include <linux/if.h>
+#include "led.h"
+
+void ieee80211_led_rx(struct ieee80211_local *local)
+{
+ if (unlikely(!local->rx_led))
+ return;
+ if (local->rx_led_counter++ % 2 == 0)
+ led_trigger_event(local->rx_led, LED_OFF);
+ else
+ led_trigger_event(local->rx_led, LED_FULL);
+}
+
+/* q is 1 if a packet was enqueued, 0 if it has been transmitted */
+void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+ if (unlikely(!local->tx_led))
+ return;
+ /* not sure how this is supposed to work ... */
+ local->tx_led_counter += 2*q-1;
+ if (local->tx_led_counter % 2 == 0)
+ led_trigger_event(local->tx_led, LED_OFF);
+ else
+ led_trigger_event(local->tx_led, LED_FULL);
+}
+
+void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
+{
+ if (unlikely(!local->assoc_led))
+ return;
+ if (associated)
+ led_trigger_event(local->assoc_led, LED_FULL);
+ else
+ led_trigger_event(local->assoc_led, LED_OFF);
+}
+
+void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
+{
+ if (unlikely(!local->radio_led))
+ return;
+ if (enabled)
+ led_trigger_event(local->radio_led, LED_FULL);
+ else
+ led_trigger_event(local->radio_led, LED_OFF);
+}
+
+void ieee80211_led_init(struct ieee80211_local *local)
+{
+ local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->rx_led) {
+ snprintf(local->rx_led_name, sizeof(local->rx_led_name),
+ "%srx", wiphy_name(local->hw.wiphy));
+ local->rx_led->name = local->rx_led_name;
+ if (led_trigger_register(local->rx_led)) {
+ kfree(local->rx_led);
+ local->rx_led = NULL;
+ }
+ }
+
+ local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->tx_led) {
+ snprintf(local->tx_led_name, sizeof(local->tx_led_name),
+ "%stx", wiphy_name(local->hw.wiphy));
+ local->tx_led->name = local->tx_led_name;
+ if (led_trigger_register(local->tx_led)) {
+ kfree(local->tx_led);
+ local->tx_led = NULL;
+ }
+ }
+
+ local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->assoc_led) {
+ snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
+ "%sassoc", wiphy_name(local->hw.wiphy));
+ local->assoc_led->name = local->assoc_led_name;
+ if (led_trigger_register(local->assoc_led)) {
+ kfree(local->assoc_led);
+ local->assoc_led = NULL;
+ }
+ }
+
+ local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->radio_led) {
+ snprintf(local->radio_led_name, sizeof(local->radio_led_name),
+ "%sradio", wiphy_name(local->hw.wiphy));
+ local->radio_led->name = local->radio_led_name;
+ if (led_trigger_register(local->radio_led)) {
+ kfree(local->radio_led);
+ local->radio_led = NULL;
+ }
+ }
+}
+
+void ieee80211_led_exit(struct ieee80211_local *local)
+{
+ if (local->radio_led) {
+ led_trigger_unregister(local->radio_led);
+ kfree(local->radio_led);
+ }
+ if (local->assoc_led) {
+ led_trigger_unregister(local->assoc_led);
+ kfree(local->assoc_led);
+ }
+ if (local->tx_led) {
+ led_trigger_unregister(local->tx_led);
+ kfree(local->tx_led);
+ }
+ if (local->rx_led) {
+ led_trigger_unregister(local->rx_led);
+ kfree(local->rx_led);
+ }
+}
+
+char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->radio_led)
+ return local->radio_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
+
+char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->assoc_led)
+ return local->assoc_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
+
+char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->tx_led)
+ return local->tx_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
+
+char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->rx_led)
+ return local->rx_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
--- /dev/null
+/*
+ * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/leds.h>
+#include "ieee80211_i.h"
+
+#ifdef CONFIG_MAC80211_LEDS
+extern void ieee80211_led_rx(struct ieee80211_local *local);
+extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
+extern void ieee80211_led_assoc(struct ieee80211_local *local,
+ bool associated);
+extern void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled);
+extern void ieee80211_led_init(struct ieee80211_local *local);
+extern void ieee80211_led_exit(struct ieee80211_local *local);
+#else
+static inline void ieee80211_led_rx(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_tx(struct ieee80211_local *local, int q)
+{
+}
+static inline void ieee80211_led_assoc(struct ieee80211_local *local,
+ bool associated)
+{
+}
+static inline void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled)
+{
+}
+static inline void ieee80211_led_init(struct ieee80211_local *local)
+{
+}
+static inline void ieee80211_led_exit(struct ieee80211_local *local)
+{
+}
+#endif
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/rtnetlink.h>
+#include <linux/bitmap.h>
+#include <net/net_namespace.h>
+#include <net/cfg80211.h>
+
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "mesh.h"
+#include "wep.h"
+#include "wme.h"
+#include "aes_ccm.h"
+#include "led.h"
+#include "cfg.h"
+#include "debugfs.h"
+#include "debugfs_netdev.h"
+
+#define SUPP_MCS_SET_LEN 16
+
+/*
+ * For seeing transmitted packets on monitor interfaces
+ * we have a radiotap header too.
+ */
+struct ieee80211_tx_status_rtap_hdr {
+ struct ieee80211_radiotap_header hdr;
+ __le16 tx_flags;
+ u8 data_retries;
+} __attribute__ ((packed));
+
+/* common interface routines */
+
+static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr)
+{
+ memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+ return ETH_ALEN;
+}
+
+/* must be called under mdev tx lock */
+static void ieee80211_configure_filter(struct ieee80211_local *local)
+{
+ unsigned int changed_flags;
+ unsigned int new_flags = 0;
+
+ if (atomic_read(&local->iff_promiscs))
+ new_flags |= FIF_PROMISC_IN_BSS;
+
+ if (atomic_read(&local->iff_allmultis))
+ new_flags |= FIF_ALLMULTI;
+
+ if (local->monitors)
+ new_flags |= FIF_BCN_PRBRESP_PROMISC;
+
+ if (local->fif_fcsfail)
+ new_flags |= FIF_FCSFAIL;
+
+ if (local->fif_plcpfail)
+ new_flags |= FIF_PLCPFAIL;
+
+ if (local->fif_control)
+ new_flags |= FIF_CONTROL;
+
+ if (local->fif_other_bss)
+ new_flags |= FIF_OTHER_BSS;
+
+ changed_flags = local->filter_flags ^ new_flags;
+
+ /* be a bit nasty */
+ new_flags |= (1<<31);
+
+ local->ops->configure_filter(local_to_hw(local),
+ changed_flags, &new_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+
+ WARN_ON(new_flags & (1<<31));
+
+ local->filter_flags = new_flags & ~(1<<31);
+}
+
+/* master interface */
+
+static int ieee80211_master_open(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+ int res = -EOPNOTSUPP;
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->dev != dev && netif_running(sdata->dev)) {
+ res = 0;
+ break;
+ }
+ }
+ return res;
+}
+
+static int ieee80211_master_stop(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(sdata, &local->interfaces, list)
+ if (sdata->dev != dev && netif_running(sdata->dev))
+ dev_close(sdata->dev);
+
+ return 0;
+}
+
+static void ieee80211_master_set_multicast_list(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ ieee80211_configure_filter(local);
+}
+
+/* regular interfaces */
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+ int meshhdrlen;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0;
+
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.3 frames. */
+ if (new_mtu < 256 ||
+ new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+ return (type1 == IEEE80211_IF_TYPE_MNTR ||
+ type2 == IEEE80211_IF_TYPE_MNTR ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_WDS) ||
+ (type1 == IEEE80211_IF_TYPE_WDS &&
+ (type2 == IEEE80211_IF_TYPE_WDS ||
+ type2 == IEEE80211_IF_TYPE_AP)) ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_VLAN) ||
+ (type1 == IEEE80211_IF_TYPE_VLAN &&
+ (type2 == IEEE80211_IF_TYPE_AP ||
+ type2 == IEEE80211_IF_TYPE_VLAN)));
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata, *nsdata;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_init_conf conf;
+ int res;
+ bool need_hw_reconfig = 0;
+ struct sta_info *sta;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(nsdata, &local->interfaces, list) {
+ struct net_device *ndev = nsdata->dev;
+
+ if (ndev != dev && ndev != local->mdev && netif_running(ndev)) {
+ /*
+ * Allow only a single IBSS interface to be up at any
+ * time. This is restricted because beacon distribution
+ * cannot work properly if both are in the same IBSS.
+ *
+ * To remove this restriction we'd have to disallow them
+ * from setting the same SSID on different IBSS interfaces
+ * belonging to the same hardware. Then, however, we're
+ * faced with having to adopt two different TSF timers...
+ */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ return -EBUSY;
+
+ /*
+ * Disallow multiple IBSS/STA mode interfaces.
+ *
+ * This is a technical restriction, it is possible although
+ * most likely not IEEE 802.11 compliant to have multiple
+ * STAs with just a single hardware (the TSF timer will not
+ * be adjusted properly.)
+ *
+ * However, because mac80211 uses the master device's BSS
+ * information for each STA/IBSS interface, doing this will
+ * currently corrupt that BSS information completely, unless,
+ * a not very useful case, both STAs are associated to the
+ * same BSS.
+ *
+ * To remove this restriction, the BSS information needs to
+ * be embedded in the STA/IBSS mode sdata instead of using
+ * the master device's BSS structure.
+ */
+ if ((sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) &&
+ (nsdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ nsdata->vif.type == IEEE80211_IF_TYPE_IBSS))
+ return -EBUSY;
+
+ /*
+ * The remaining checks are only performed for interfaces
+ * with the same MAC address.
+ */
+ if (compare_ether_addr(dev->dev_addr, ndev->dev_addr))
+ continue;
+
+ /*
+ * check whether it may have the same address
+ */
+ if (!identical_mac_addr_allowed(sdata->vif.type,
+ nsdata->vif.type))
+ return -ENOTUNIQ;
+
+ /*
+ * can only add VLANs to enabled APs
+ */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN &&
+ nsdata->vif.type == IEEE80211_IF_TYPE_AP)
+ sdata->u.vlan.ap = nsdata;
+ }
+ }
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_WDS:
+ if (is_zero_ether_addr(sdata->u.wds.remote_addr))
+ return -ENOLINK;
+
+ /* Create STA entry for the WDS peer */
+ sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr,
+ GFP_KERNEL);
+ if (!sta)
+ return -ENOMEM;
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ res = sta_info_insert(sta);
+ if (res) {
+ /* STA has been freed */
+ return res;
+ }
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ if (!sdata->u.vlan.ap)
+ return -ENOLINK;
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_MNTR:
+ case IEEE80211_IF_TYPE_IBSS:
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ /* no special treatment */
+ break;
+ case IEEE80211_IF_TYPE_INVALID:
+ /* cannot happen */
+ WARN_ON(1);
+ break;
+ }
+
+ if (local->open_count == 0) {
+ res = 0;
+ if (local->ops->start)
+ res = local->ops->start(local_to_hw(local));
+ if (res)
+ return res;
+ need_hw_reconfig = 1;
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
+ }
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_VLAN:
+ list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans);
+ /* no need to tell driver */
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs++;
+ break;
+ }
+
+ /* must be before the call to ieee80211_configure_filter */
+ local->monitors++;
+ if (local->monitors == 1)
+ local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+
+ if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
+ local->fif_fcsfail++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
+ local->fif_plcpfail++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
+ local->fif_control++;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
+ local->fif_other_bss++;
+
+ netif_tx_lock_bh(local->mdev);
+ ieee80211_configure_filter(local);
+ netif_tx_unlock_bh(local->mdev);
+ break;
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ /* fall through */
+ default:
+ conf.vif = &sdata->vif;
+ conf.type = sdata->vif.type;
+ conf.mac_addr = dev->dev_addr;
+ res = local->ops->add_interface(local_to_hw(local), &conf);
+ if (res && !local->open_count && local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ if (res)
+ return res;
+
+ ieee80211_if_config(dev);
+ ieee80211_reset_erp_info(dev);
+ ieee80211_enable_keys(sdata);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME))
+ netif_carrier_off(dev);
+ else
+ netif_carrier_on(dev);
+ }
+
+ if (local->open_count == 0) {
+ res = dev_open(local->mdev);
+ WARN_ON(res);
+ tasklet_enable(&local->tx_pending_tasklet);
+ tasklet_enable(&local->tasklet);
+ }
+
+ /*
+ * set_multicast_list will be invoked by the networking core
+ * which will check whether any increments here were done in
+ * error and sync them down to the hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+
+ local->open_count++;
+ if (need_hw_reconfig)
+ ieee80211_hw_config(local);
+
+ /*
+ * ieee80211_sta_work is disabled while network interface
+ * is down. Therefore, some configuration changes may not
+ * yet be effective. Trigger execution of ieee80211_sta_work
+ * to fix this.
+ */
+ if(sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ queue_work(local->hw.workqueue, &ifsta->work);
+ }
+
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+static int ieee80211_stop(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_init_conf conf;
+ struct sta_info *sta;
+
+ /*
+ * Stop TX on this interface first.
+ */
+ netif_stop_queue(dev);
+
+ /*
+ * Now delete all active aggregation sessions.
+ */
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sta->sdata == sdata)
+ ieee80211_sta_tear_down_BA_sessions(dev, sta->addr);
+ }
+
+ rcu_read_unlock();
+
+ /*
+ * Remove all stations associated with this interface.
+ *
+ * This must be done before calling ops->remove_interface()
+ * because otherwise we can later invoke ops->sta_notify()
+ * whenever the STAs are removed, and that invalidates driver
+ * assumptions about always getting a vif pointer that is valid
+ * (because if we remove a STA after ops->remove_interface()
+ * the driver will have removed the vif info already!)
+ *
+ * We could relax this and only unlink the stations from the
+ * hash table and list but keep them on a per-sdata list that
+ * will be inserted back again when the interface is brought
+ * up again, but I don't currently see a use case for that,
+ * except with WDS which gets a STA entry created when it is
+ * brought up.
+ */
+ sta_info_flush(local, sdata);
+
+ /*
+ * Don't count this interface for promisc/allmulti while it
+ * is down. dev_mc_unsync() will invoke set_multicast_list
+ * on the master interface which will sync these down to the
+ * hardware as filter flags.
+ */
+ if (sdata->flags & IEEE80211_SDATA_ALLMULTI)
+ atomic_dec(&local->iff_allmultis);
+
+ if (sdata->flags & IEEE80211_SDATA_PROMISC)
+ atomic_dec(&local->iff_promiscs);
+
+ dev_mc_unsync(local->mdev, dev);
+
+ /* APs need special treatment */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ struct ieee80211_sub_if_data *vlan, *tmp;
+ struct beacon_data *old_beacon = sdata->u.ap.beacon;
+
+ /* remove beacon */
+ rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ synchronize_rcu();
+ kfree(old_beacon);
+
+ /* down all dependent devices, that is VLANs */
+ list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans,
+ u.vlan.list)
+ dev_close(vlan->dev);
+ WARN_ON(!list_empty(&sdata->u.ap.vlans));
+ }
+
+ local->open_count--;
+
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_VLAN:
+ list_del(&sdata->u.vlan.list);
+ sdata->u.vlan.ap = NULL;
+ /* no need to tell driver */
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) {
+ local->cooked_mntrs--;
+ break;
+ }
+
+ local->monitors--;
+ if (local->monitors == 0)
+ local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+
+ if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
+ local->fif_fcsfail--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL)
+ local->fif_plcpfail--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL)
+ local->fif_control--;
+ if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS)
+ local->fif_other_bss--;
+
+ netif_tx_lock_bh(local->mdev);
+ ieee80211_configure_filter(local);
+ netif_tx_unlock_bh(local->mdev);
+ break;
+ case IEEE80211_IF_TYPE_MESH_POINT:
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ sdata->u.sta.state = IEEE80211_DISABLED;
+ del_timer_sync(&sdata->u.sta.timer);
+ /*
+ * When we get here, the interface is marked down.
+ * Call synchronize_rcu() to wait for the RX path
+ * should it be using the interface and enqueuing
+ * frames at this very time on another CPU.
+ */
+ synchronize_rcu();
+ skb_queue_purge(&sdata->u.sta.skb_queue);
+
+ if (local->scan_dev == sdata->dev) {
+ if (!local->ops->hw_scan) {
+ local->sta_sw_scanning = 0;
+ cancel_delayed_work(&local->scan_work);
+ } else
+ local->sta_hw_scanning = 0;
+ }
+
+ flush_workqueue(local->hw.workqueue);
+
+ sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
+ kfree(sdata->u.sta.extra_ie);
+ sdata->u.sta.extra_ie = NULL;
+ sdata->u.sta.extra_ie_len = 0;
+ /* fall through */
+ default:
+ conf.vif = &sdata->vif;
+ conf.type = sdata->vif.type;
+ conf.mac_addr = dev->dev_addr;
+ /* disable all keys for as long as this netdev is down */
+ ieee80211_disable_keys(sdata);
+ local->ops->remove_interface(local_to_hw(local), &conf);
+ }
+
+ if (local->open_count == 0) {
+ if (netif_running(local->mdev))
+ dev_close(local->mdev);
+
+ if (local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+
+ ieee80211_led_radio(local, 0);
+
+ tasklet_disable(&local->tx_pending_tasklet);
+ tasklet_disable(&local->tasklet);
+ }
+
+ return 0;
+}
+
+int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ u16 start_seq_num = 0;
+ u8 *state;
+ int ret;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM)
+ return -EINVAL;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ printk(KERN_DEBUG "Could not find the station\n");
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ /* we have tried too many times, receiver does not want A-MPDU */
+ if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
+ ret = -EBUSY;
+ goto start_ba_exit;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* check if the TID is not in aggregation flow already */
+ if (*state != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - session is not "
+ "idle on tid %u\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ ret = -EAGAIN;
+ goto start_ba_exit;
+ }
+
+ /* prepare A-MPDU MLME for Tx aggregation */
+ sta->ampdu_mlme.tid_tx[tid] =
+ kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
+ if (!sta->ampdu_mlme.tid_tx[tid]) {
+ if (net_ratelimit())
+ printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
+ tid);
+ ret = -ENOMEM;
+ goto start_ba_exit;
+ }
+ /* Tx timer */
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
+ sta_addba_resp_timer_expired;
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
+ (unsigned long)&sta->timer_to_tid[tid];
+ init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+
+ /* ensure that TX flow won't interrupt us
+ * until the end of the call to requeue function */
+ spin_lock_bh(&local->mdev->queue_lock);
+
+ /* create a new queue for this aggregation */
+ ret = ieee80211_ht_agg_queue_add(local, sta, tid);
+
+ /* case no queue is available to aggregation
+ * don't switch to aggregation */
+ if (ret) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - queue unavailable for"
+ " tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto start_ba_err;
+ }
+ sdata = sta->sdata;
+
+ /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
+ * call back right away, it must see that the flow has begun */
+ *state |= HT_ADDBA_REQUESTED_MSK;
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
+ ra, tid, &start_seq_num);
+
+ if (ret) {
+ /* No need to requeue the packets in the agg queue, since we
+ * held the tx lock: no packet could be enqueued to the newly
+ * allocated queue */
+ ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "BA request denied - HW unavailable for"
+ " tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ *state = HT_AGG_STATE_IDLE;
+ goto start_ba_err;
+ }
+
+ /* Will put all the packets in the new SW queue */
+ ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
+ spin_unlock_bh(&local->mdev->queue_lock);
+
+ /* send an addBA request */
+ sta->ampdu_mlme.dialog_token_allocator++;
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token =
+ sta->ampdu_mlme.dialog_token_allocator;
+ sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
+
+ ieee80211_send_addba_request(sta->sdata->dev, ra, tid,
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token,
+ sta->ampdu_mlme.tid_tx[tid]->ssn,
+ 0x40, 5000);
+
+ /* activate the timer for the recipient's addBA response */
+ sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
+ jiffies + ADDBA_RESP_INTERVAL;
+ add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+ printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
+ goto start_ba_exit;
+
+start_ba_err:
+ kfree(sta->ampdu_mlme.tid_tx[tid]);
+ sta->ampdu_mlme.tid_tx[tid] = NULL;
+ spin_unlock_bh(&local->mdev->queue_lock);
+ ret = -EBUSY;
+start_ba_exit:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
+
+int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
+ u8 *ra, u16 tid,
+ enum ieee80211_back_parties initiator)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ int ret = 0;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM)
+ return -EINVAL;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+
+ /* check if the TID is in aggregation */
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (*state != HT_AGG_STATE_OPERATIONAL) {
+ ret = -ENOENT;
+ goto stop_BA_exit;
+ }
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
+
+ *state = HT_AGG_STATE_REQ_STOP_BA_MSK |
+ (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
+ ra, tid, NULL);
+
+ /* case HW denied going back to legacy */
+ if (ret) {
+ WARN_ON(ret != -EBUSY);
+ *state = HT_AGG_STATE_OPERATIONAL;
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ goto stop_BA_exit;
+ }
+
+stop_BA_exit:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
+
+void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM) {
+ printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+ tid, STA_TID_NUM);
+ return;
+ }
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ printk(KERN_DEBUG "Could not find station: %s\n",
+ print_mac(mac, ra));
+ return;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
+ *state);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return;
+ }
+
+ WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
+
+ *state |= HT_ADDBA_DRV_READY_MSK;
+
+ if (*state == HT_AGG_STATE_OPERATIONAL) {
+ printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ }
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
+
+void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+ u8 *state;
+ int agg_queue;
+ DECLARE_MAC_BUF(mac);
+
+ if (tid >= STA_TID_NUM) {
+ printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
+ tid, STA_TID_NUM);
+ return;
+ }
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ rcu_read_lock();
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ printk(KERN_DEBUG "Could not find station: %s\n",
+ print_mac(mac, ra));
+ rcu_read_unlock();
+ return;
+ }
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
+ printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ rcu_read_unlock();
+ return;
+ }
+
+ if (*state & HT_AGG_STATE_INITIATOR_MSK)
+ ieee80211_send_delba(sta->sdata->dev, ra, tid,
+ WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
+
+ agg_queue = sta->tid_to_tx_q[tid];
+
+ /* avoid ordering issues: we are the only one that can modify
+ * the content of the qdiscs */
+ spin_lock_bh(&local->mdev->queue_lock);
+ /* remove the queue for this aggregation */
+ ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
+ spin_unlock_bh(&local->mdev->queue_lock);
+
+ /* we just requeued the all the frames that were in the removed
+ * queue, and since we might miss a softirq we do netif_schedule.
+ * ieee80211_wake_queue is not used here as this queue is not
+ * necessarily stopped */
+ netif_schedule(local->mdev);
+ *state = HT_AGG_STATE_IDLE;
+ sta->ampdu_mlme.addba_req_num[tid] = 0;
+ kfree(sta->ampdu_mlme.tid_tx[tid]);
+ sta->ampdu_mlme.tid_tx[tid] = NULL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
+
+void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+ const u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_ra_tid *ra_tid;
+ struct sk_buff *skb = dev_alloc_skb(0);
+
+ if (unlikely(!skb)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping start BA session", skb->dev->name);
+ return;
+ }
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ memcpy(&ra_tid->ra, ra, ETH_ALEN);
+ ra_tid->tid = tid;
+
+ skb->pkt_type = IEEE80211_ADDBA_MSG;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
+
+void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
+ const u8 *ra, u16 tid)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_ra_tid *ra_tid;
+ struct sk_buff *skb = dev_alloc_skb(0);
+
+ if (unlikely(!skb)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping stop BA session", skb->dev->name);
+ return;
+ }
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ memcpy(&ra_tid->ra, ra, ETH_ALEN);
+ ra_tid->tid = tid;
+
+ skb->pkt_type = IEEE80211_DELBA_MSG;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
+
+static void ieee80211_set_multicast_list(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int allmulti, promisc, sdata_allmulti, sdata_promisc;
+
+ allmulti = !!(dev->flags & IFF_ALLMULTI);
+ promisc = !!(dev->flags & IFF_PROMISC);
+ sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI);
+ sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC);
+
+ if (allmulti != sdata_allmulti) {
+ if (dev->flags & IFF_ALLMULTI)
+ atomic_inc(&local->iff_allmultis);
+ else
+ atomic_dec(&local->iff_allmultis);
+ sdata->flags ^= IEEE80211_SDATA_ALLMULTI;
+ }
+
+ if (promisc != sdata_promisc) {
+ if (dev->flags & IFF_PROMISC)
+ atomic_inc(&local->iff_promiscs);
+ else
+ atomic_dec(&local->iff_promiscs);
+ sdata->flags ^= IEEE80211_SDATA_PROMISC;
+ }
+
+ dev_mc_sync(local->mdev, dev);
+}
+
+static const struct header_ops ieee80211_header_ops = {
+ .create = eth_header,
+ .parse = header_parse_80211,
+ .rebuild = eth_rebuild_header,
+ .cache = eth_header_cache,
+ .cache_update = eth_header_cache_update,
+};
+
+/* Must not be called for mdev */
+void ieee80211_if_setup(struct net_device *dev)
+{
+ ether_setup(dev);
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+ dev->wireless_handlers = &ieee80211_iw_handler_def;
+ dev->set_multicast_list = ieee80211_set_multicast_list;
+ dev->change_mtu = ieee80211_change_mtu;
+ dev->open = ieee80211_open;
+ dev->stop = ieee80211_stop;
+ dev->destructor = ieee80211_if_free;
+}
+
+/* everything else */
+
+static int __ieee80211_if_config(struct net_device *dev,
+ struct sk_buff *beacon,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_conf conf;
+
+ if (!local->ops->config_interface || !netif_running(dev))
+ return 0;
+
+ memset(&conf, 0, sizeof(conf));
+ conf.type = sdata->vif.type;
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ conf.bssid = sdata->u.sta.bssid;
+ conf.ssid = sdata->u.sta.ssid;
+ conf.ssid_len = sdata->u.sta.ssid_len;
+ } else if (ieee80211_vif_is_mesh(&sdata->vif)) {
+ conf.beacon = beacon;
+ ieee80211_start_mesh(dev);
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ conf.ssid = sdata->u.ap.ssid;
+ conf.ssid_len = sdata->u.ap.ssid_len;
+ conf.beacon = beacon;
+ conf.beacon_control = control;
+ }
+ return local->ops->config_interface(local_to_hw(local),
+ &sdata->vif, &conf);
+}
+
+int ieee80211_if_config(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT &&
+ (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+ return ieee80211_if_config_beacon(dev);
+ return __ieee80211_if_config(dev, NULL, NULL);
+}
+
+int ieee80211_if_config_beacon(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_tx_control control;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sk_buff *skb;
+
+ if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+ return 0;
+ skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif,
+ &control);
+ if (!skb)
+ return -ENOMEM;
+ return __ieee80211_if_config(dev, skb, &control);
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local)
+{
+ struct ieee80211_channel *chan;
+ int ret = 0;
+
+ if (local->sta_sw_scanning)
+ chan = local->scan_channel;
+ else
+ chan = local->oper_channel;
+
+ local->hw.conf.channel = chan;
+
+ if (!local->hw.conf.power_level)
+ local->hw.conf.power_level = chan->max_power;
+ else
+ local->hw.conf.power_level = min(chan->max_power,
+ local->hw.conf.power_level);
+
+ local->hw.conf.max_antenna_gain = chan->max_antenna_gain;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n",
+ wiphy_name(local->hw.wiphy), chan->center_freq);
+#endif
+
+ if (local->open_count)
+ ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+
+ return ret;
+}
+
+/**
+ * ieee80211_handle_ht should be used only after legacy configuration
+ * has been determined namely band, as ht configuration depends upon
+ * the hardware's HT abilities for a _specific_ band.
+ */
+u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
+ struct ieee80211_ht_info *req_ht_cap,
+ struct ieee80211_ht_bss_info *req_bss_cap)
+{
+ struct ieee80211_conf *conf = &local->hw.conf;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_ht_info ht_conf;
+ struct ieee80211_ht_bss_info ht_bss_conf;
+ int i;
+ u32 changed = 0;
+
+ sband = local->hw.wiphy->bands[conf->channel->band];
+
+ /* HT is not supported */
+ if (!sband->ht_info.ht_supported) {
+ conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+ return 0;
+ }
+
+ memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info));
+ memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info));
+
+ if (enable_ht) {
+ if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE))
+ changed |= BSS_CHANGED_HT;
+
+ conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
+ ht_conf.ht_supported = 1;
+
+ ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
+ ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
+ ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
+
+ for (i = 0; i < SUPP_MCS_SET_LEN; i++)
+ ht_conf.supp_mcs_set[i] =
+ sband->ht_info.supp_mcs_set[i] &
+ req_ht_cap->supp_mcs_set[i];
+
+ ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
+ ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
+ ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
+
+ ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
+ ht_conf.ampdu_density = req_ht_cap->ampdu_density;
+
+ /* if bss configuration changed store the new one */
+ if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) ||
+ memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) {
+ changed |= BSS_CHANGED_HT;
+ memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf));
+ memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf));
+ }
+ } else {
+ if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)
+ changed |= BSS_CHANGED_HT;
+ conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+ }
+
+ return changed;
+}
+
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ if (!changed)
+ return;
+
+ if (local->ops->bss_info_changed)
+ local->ops->bss_info_changed(local_to_hw(local),
+ &sdata->vif,
+ &sdata->bss_conf,
+ changed);
+}
+
+void ieee80211_reset_erp_info(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ sdata->bss_conf.use_cts_prot = 0;
+ sdata->bss_conf.use_short_preamble = 0;
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_ERP_CTS_PROT |
+ BSS_CHANGED_ERP_PREAMBLE);
+}
+
+void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_tx_status *saved;
+ int tmp;
+
+ skb->dev = local->mdev;
+ saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
+ if (unlikely(!saved)) {
+ if (net_ratelimit())
+ printk(KERN_WARNING "%s: Not enough memory, "
+ "dropping tx status", skb->dev->name);
+ /* should be dev_kfree_skb_irq, but due to this function being
+ * named _irqsafe instead of just _irq we can't be sure that
+ * people won't call it from non-irq contexts */
+ dev_kfree_skb_any(skb);
+ return;
+ }
+ memcpy(saved, status, sizeof(struct ieee80211_tx_status));
+ /* copy pointer to saved status into skb->cb for use by tasklet */
+ memcpy(skb->cb, &saved, sizeof(saved));
+
+ skb->pkt_type = IEEE80211_TX_STATUS_MSG;
+ skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
+ &local->skb_queue : &local->skb_queue_unreliable, skb);
+ tmp = skb_queue_len(&local->skb_queue) +
+ skb_queue_len(&local->skb_queue_unreliable);
+ while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ memcpy(&saved, skb->cb, sizeof(saved));
+ kfree(saved);
+ dev_kfree_skb_irq(skb);
+ tmp--;
+ I802_DEBUG_INC(local->tx_status_drop);
+ }
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct sk_buff *skb;
+ struct ieee80211_rx_status rx_status;
+ struct ieee80211_tx_status *tx_status;
+ struct ieee80211_ra_tid *ra_tid;
+
+ while ((skb = skb_dequeue(&local->skb_queue)) ||
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ switch (skb->pkt_type) {
+ case IEEE80211_RX_MSG:
+ /* status is in skb->cb */
+ memcpy(&rx_status, skb->cb, sizeof(rx_status));
+ /* Clear skb->pkt_type in order to not confuse kernel
+ * netstack. */
+ skb->pkt_type = 0;
+ __ieee80211_rx(local_to_hw(local), skb, &rx_status);
+ break;
+ case IEEE80211_TX_STATUS_MSG:
+ /* get pointer to saved status out of skb->cb */
+ memcpy(&tx_status, skb->cb, sizeof(tx_status));
+ skb->pkt_type = 0;
+ ieee80211_tx_status(local_to_hw(local),
+ skb, tx_status);
+ kfree(tx_status);
+ break;
+ case IEEE80211_DELBA_MSG:
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ ieee80211_stop_tx_ba_cb(local_to_hw(local),
+ ra_tid->ra, ra_tid->tid);
+ dev_kfree_skb(skb);
+ break;
+ case IEEE80211_ADDBA_MSG:
+ ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
+ ieee80211_start_tx_ba_cb(local_to_hw(local),
+ ra_tid->ra, ra_tid->tid);
+ dev_kfree_skb(skb);
+ break ;
+ default: /* should never get here! */
+ printk(KERN_ERR "%s: Unknown message type (%d)\n",
+ wiphy_name(local->hw.wiphy), skb->pkt_type);
+ dev_kfree_skb(skb);
+ break;
+ }
+ }
+}
+
+/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
+ * make a prepared TX frame (one that has been given to hw) to look like brand
+ * new IEEE 802.11 frame that is ready to go through TX processing again.
+ * Also, tx_packet_data in cb is restored from tx_control. */
+static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
+ struct ieee80211_key *key,
+ struct sk_buff *skb,
+ struct ieee80211_tx_control *control)
+{
+ int hdrlen, iv_len, mic_len;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+ pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex;
+ pkt_data->flags = 0;
+ if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS)
+ pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS;
+ if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)
+ pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
+ if (control->flags & IEEE80211_TXCTL_REQUEUE)
+ pkt_data->flags |= IEEE80211_TXPD_REQUEUE;
+ if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME)
+ pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME;
+ pkt_data->queue = control->queue;
+
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+ if (!key)
+ goto no_key;
+
+ switch (key->conf.alg) {
+ case ALG_WEP:
+ iv_len = WEP_IV_LEN;
+ mic_len = WEP_ICV_LEN;
+ break;
+ case ALG_TKIP:
+ iv_len = TKIP_IV_LEN;
+ mic_len = TKIP_ICV_LEN;
+ break;
+ case ALG_CCMP:
+ iv_len = CCMP_HDR_LEN;
+ mic_len = CCMP_MIC_LEN;
+ break;
+ default:
+ goto no_key;
+ }
+
+ if (skb->len >= mic_len &&
+ !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
+ skb_trim(skb, skb->len - mic_len);
+ if (skb->len >= iv_len && skb->len > hdrlen) {
+ memmove(skb->data + iv_len, skb->data, hdrlen);
+ skb_pull(skb, iv_len);
+ }
+
+no_key:
+ {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
+ fc &= ~IEEE80211_STYPE_QOS_DATA;
+ hdr->frame_control = cpu_to_le16(fc);
+ memmove(skb->data + 2, skb->data, hdrlen - 2);
+ skb_pull(skb, 2);
+ }
+ }
+}
+
+static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
+ struct sta_info *sta,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ sta->tx_filtered_count++;
+
+ /*
+ * Clear the TX filter mask for this STA when sending the next
+ * packet. If the STA went to power save mode, this will happen
+ * happen when it wakes up for the next time.
+ */
+ sta->flags |= WLAN_STA_CLEAR_PS_FILT;
+
+ /*
+ * This code races in the following way:
+ *
+ * (1) STA sends frame indicating it will go to sleep and does so
+ * (2) hardware/firmware adds STA to filter list, passes frame up
+ * (3) hardware/firmware processes TX fifo and suppresses a frame
+ * (4) we get TX status before having processed the frame and
+ * knowing that the STA has gone to sleep.
+ *
+ * This is actually quite unlikely even when both those events are
+ * processed from interrupts coming in quickly after one another or
+ * even at the same time because we queue both TX status events and
+ * RX frames to be processed by a tasklet and process them in the
+ * same order that they were received or TX status last. Hence, there
+ * is no race as long as the frame RX is processed before the next TX
+ * status, which drivers can ensure, see below.
+ *
+ * Note that this can only happen if the hardware or firmware can
+ * actually add STAs to the filter list, if this is done by the
+ * driver in response to set_tim() (which will only reduce the race
+ * this whole filtering tries to solve, not completely solve it)
+ * this situation cannot happen.
+ *
+ * To completely solve this race drivers need to make sure that they
+ * (a) don't mix the irq-safe/not irq-safe TX status/RX processing
+ * functions and
+ * (b) always process RX events before TX status events if ordering
+ * can be unknown, for example with different interrupt status
+ * bits.
+ */
+ if (sta->flags & WLAN_STA_PS &&
+ skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) {
+ ieee80211_remove_tx_extra(local, sta->key, skb,
+ &status->control);
+ skb_queue_tail(&sta->tx_filtered, skb);
+ return;
+ }
+
+ if (!(sta->flags & WLAN_STA_PS) &&
+ !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
+ /* Software retry the packet once */
+ status->control.flags |= IEEE80211_TXCTL_REQUEUE;
+ ieee80211_remove_tx_extra(local, sta->key, skb,
+ &status->control);
+ dev_queue_xmit(skb);
+ return;
+ }
+
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped TX filtered frame, "
+ "queue_len=%d PS=%d @%lu\n",
+ wiphy_name(local->hw.wiphy),
+ skb_queue_len(&sta->tx_filtered),
+ !!(sta->flags & WLAN_STA_PS), jiffies);
+ dev_kfree_skb(skb);
+}
+
+void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct sk_buff *skb2;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_local *local = hw_to_local(hw);
+ u16 frag, type;
+ struct ieee80211_tx_status_rtap_hdr *rthdr;
+ struct ieee80211_sub_if_data *sdata;
+ struct net_device *prev_dev = NULL;
+
+ if (!status) {
+ printk(KERN_ERR
+ "%s: ieee80211_tx_status called with NULL status\n",
+ wiphy_name(local->hw.wiphy));
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ rcu_read_lock();
+
+ if (status->excessive_retries) {
+ struct sta_info *sta;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ if (sta->flags & WLAN_STA_PS) {
+ /*
+ * The STA is in power save mode, so assume
+ * that this TX packet failed because of that.
+ */
+ status->excessive_retries = 0;
+ status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
+ ieee80211_handle_filtered_frame(local, sta,
+ skb, status);
+ rcu_read_unlock();
+ return;
+ }
+ }
+ }
+
+ if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
+ struct sta_info *sta;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ ieee80211_handle_filtered_frame(local, sta, skb,
+ status);
+ rcu_read_unlock();
+ return;
+ }
+ } else
+ rate_control_tx_status(local->mdev, skb, status);
+
+ rcu_read_unlock();
+
+ ieee80211_led_tx(local, 0);
+
+ /* SNMP counters
+ * Fragments are passed to low-level drivers as separate skbs, so these
+ * are actually fragments, not frames. Update frame counters only for
+ * the first fragment of the frame. */
+
+ frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
+ type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
+
+ if (status->flags & IEEE80211_TX_STATUS_ACK) {
+ if (frag == 0) {
+ local->dot11TransmittedFrameCount++;
+ if (is_multicast_ether_addr(hdr->addr1))
+ local->dot11MulticastTransmittedFrameCount++;
+ if (status->retry_count > 0)
+ local->dot11RetryCount++;
+ if (status->retry_count > 1)
+ local->dot11MultipleRetryCount++;
+ }
+
+ /* This counter shall be incremented for an acknowledged MPDU
+ * with an individual address in the address 1 field or an MPDU
+ * with a multicast address in the address 1 field of type Data
+ * or Management. */
+ if (!is_multicast_ether_addr(hdr->addr1) ||
+ type == IEEE80211_FTYPE_DATA ||
+ type == IEEE80211_FTYPE_MGMT)
+ local->dot11TransmittedFragmentCount++;
+ } else {
+ if (frag == 0)
+ local->dot11FailedCount++;
+ }
+
+ /* this was a transmitted frame, but now we want to reuse it */
+ skb_orphan(skb);
+
+ /*
+ * This is a bit racy but we can avoid a lot of work
+ * with this test...
+ */
+ if (!local->monitors && !local->cooked_mntrs) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ /* send frame to monitor interfaces now */
+
+ if (skb_headroom(skb) < sizeof(*rthdr)) {
+ printk(KERN_ERR "ieee80211_tx_status: headroom too small\n");
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ rthdr = (struct ieee80211_tx_status_rtap_hdr*)
+ skb_push(skb, sizeof(*rthdr));
+
+ memset(rthdr, 0, sizeof(*rthdr));
+ rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
+ rthdr->hdr.it_present =
+ cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
+ (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+
+ if (!(status->flags & IEEE80211_TX_STATUS_ACK) &&
+ !is_multicast_ether_addr(hdr->addr1))
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
+
+ if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) &&
+ (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT))
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
+ else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS)
+ rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+
+ rthdr->data_retries = status->retry_count;
+
+ /* XXX: is this sufficient for BPF? */
+ skb_set_mac_header(skb, 0);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = htons(ETH_P_802_2);
+ memset(skb->cb, 0, sizeof(skb->cb));
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) {
+ if (!netif_running(sdata->dev))
+ continue;
+
+ if (prev_dev) {
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2) {
+ skb2->dev = prev_dev;
+ netif_rx(skb2);
+ }
+ }
+
+ prev_dev = sdata->dev;
+ }
+ }
+ if (prev_dev) {
+ skb->dev = prev_dev;
+ netif_rx(skb);
+ skb = NULL;
+ }
+ rcu_read_unlock();
+ dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL(ieee80211_tx_status);
+
+struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
+ const struct ieee80211_ops *ops)
+{
+ struct ieee80211_local *local;
+ int priv_size;
+ struct wiphy *wiphy;
+
+ /* Ensure 32-byte alignment of our private data and hw private data.
+ * We use the wiphy priv data for both our ieee80211_local and for
+ * the driver's private data
+ *
+ * In memory it'll be like this:
+ *
+ * +-------------------------+
+ * | struct wiphy |
+ * +-------------------------+
+ * | struct ieee80211_local |
+ * +-------------------------+
+ * | driver's private data |
+ * +-------------------------+
+ *
+ */
+ priv_size = ((sizeof(struct ieee80211_local) +
+ NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
+ priv_data_len;
+
+ wiphy = wiphy_new(&mac80211_config_ops, priv_size);
+
+ if (!wiphy)
+ return NULL;
+
+ wiphy->privid = mac80211_wiphy_privid;
+
+ local = wiphy_priv(wiphy);
+ local->hw.wiphy = wiphy;
+
+ local->hw.priv = (char *)local +
+ ((sizeof(struct ieee80211_local) +
+ NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+
+ BUG_ON(!ops->tx);
+ BUG_ON(!ops->start);
+ BUG_ON(!ops->stop);
+ BUG_ON(!ops->config);
+ BUG_ON(!ops->add_interface);
+ BUG_ON(!ops->remove_interface);
+ BUG_ON(!ops->configure_filter);
+ local->ops = ops;
+
+ local->hw.queues = 1; /* default */
+
+ local->bridge_packets = 1;
+
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ local->short_retry_limit = 7;
+ local->long_retry_limit = 4;
+ local->hw.conf.radio_enabled = 1;
+
+ INIT_LIST_HEAD(&local->interfaces);
+
+ INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
+
+ sta_info_init(local);
+
+ tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
+ (unsigned long)local);
+ tasklet_disable(&local->tx_pending_tasklet);
+
+ tasklet_init(&local->tasklet,
+ ieee80211_tasklet_handler,
+ (unsigned long) local);
+ tasklet_disable(&local->tasklet);
+
+ skb_queue_head_init(&local->skb_queue);
+ skb_queue_head_init(&local->skb_queue_unreliable);
+
+ return local_to_hw(local);
+}
+EXPORT_SYMBOL(ieee80211_alloc_hw);
+
+int ieee80211_register_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ const char *name;
+ int result;
+ enum ieee80211_band band;
+ struct net_device *mdev;
+ struct ieee80211_sub_if_data *sdata;
+
+ /*
+ * generic code guarantees at least one band,
+ * set this very early because much code assumes
+ * that hw.conf.channel is assigned
+ */
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[band];
+ if (sband) {
+ /* init channel we're on */
+ local->hw.conf.channel =
+ local->oper_channel =
+ local->scan_channel = &sband->channels[0];
+ break;
+ }
+ }
+
+ result = wiphy_register(local->hw.wiphy);
+ if (result < 0)
+ return result;
+
+ /* for now, mdev needs sub_if_data :/ */
+ mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+ "wmaster%d", ether_setup);
+ if (!mdev)
+ goto fail_mdev_alloc;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
+ mdev->ieee80211_ptr = &sdata->wdev;
+ sdata->wdev.wiphy = local->hw.wiphy;
+
+ local->mdev = mdev;
+
+ ieee80211_rx_bss_list_init(mdev);
+
+ mdev->hard_start_xmit = ieee80211_master_start_xmit;
+ mdev->open = ieee80211_master_open;
+ mdev->stop = ieee80211_master_stop;
+ mdev->type = ARPHRD_IEEE80211;
+ mdev->header_ops = &ieee80211_header_ops;
+ mdev->set_multicast_list = ieee80211_master_set_multicast_list;
+
+ sdata->vif.type = IEEE80211_IF_TYPE_AP;
+ sdata->dev = mdev;
+ sdata->local = local;
+ sdata->u.ap.force_unicast_rateidx = -1;
+ sdata->u.ap.max_ratectrl_rateidx = -1;
+ ieee80211_if_sdata_init(sdata);
+
+ /* no RCU needed since we're still during init phase */
+ list_add_tail(&sdata->list, &local->interfaces);
+
+ name = wiphy_dev(local->hw.wiphy)->driver->name;
+ local->hw.workqueue = create_singlethread_workqueue(name);
+ if (!local->hw.workqueue) {
+ result = -ENOMEM;
+ goto fail_workqueue;
+ }
+
+ /*
+ * The hardware needs headroom for sending the frame,
+ * and we need some headroom for passing the frame to monitor
+ * interfaces, but never both at the same time.
+ */
+ local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
+ sizeof(struct ieee80211_tx_status_rtap_hdr));
+
+ debugfs_hw_add(local);
+
+ local->hw.conf.beacon_int = 1000;
+
+ local->wstats_flags |= local->hw.max_rssi ?
+ IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
+ local->wstats_flags |= local->hw.max_signal ?
+ IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
+ local->wstats_flags |= local->hw.max_noise ?
+ IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
+ if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
+ local->wstats_flags |= IW_QUAL_DBM;
+
+ result = sta_info_start(local);
+ if (result < 0)
+ goto fail_sta_info;
+
+ rtnl_lock();
+ result = dev_alloc_name(local->mdev, local->mdev->name);
+ if (result < 0)
+ goto fail_dev;
+
+ memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+ SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
+
+ result = register_netdevice(local->mdev);
+ if (result < 0)
+ goto fail_dev;
+
+ ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+ ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP);
+
+ result = ieee80211_init_rate_ctrl_alg(local,
+ hw->rate_control_algorithm);
+ if (result < 0) {
+ printk(KERN_DEBUG "%s: Failed to initialize rate control "
+ "algorithm\n", wiphy_name(local->hw.wiphy));
+ goto fail_rate;
+ }
+
+ result = ieee80211_wep_init(local);
+
+ if (result < 0) {
+ printk(KERN_DEBUG "%s: Failed to initialize wep\n",
+ wiphy_name(local->hw.wiphy));
+ goto fail_wep;
+ }
+
+ ieee80211_install_qdisc(local->mdev);
+
+ /* add one default STA interface */
+ result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
+ IEEE80211_IF_TYPE_STA, NULL);
+ if (result)
+ printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
+ wiphy_name(local->hw.wiphy));
+
+ local->reg_state = IEEE80211_DEV_REGISTERED;
+ rtnl_unlock();
+
+ ieee80211_led_init(local);
+
+ return 0;
+
+fail_wep:
+ rate_control_deinitialize(local);
+fail_rate:
+ ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+ unregister_netdevice(local->mdev);
+fail_dev:
+ rtnl_unlock();
+ sta_info_stop(local);
+fail_sta_info:
+ debugfs_hw_del(local);
+ destroy_workqueue(local->hw.workqueue);
+fail_workqueue:
+ ieee80211_if_free(local->mdev);
+ local->mdev = NULL;
+fail_mdev_alloc:
+ wiphy_unregister(local->hw.wiphy);
+ return result;
+}
+EXPORT_SYMBOL(ieee80211_register_hw);
+
+void ieee80211_unregister_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata, *tmp;
+
+ tasklet_kill(&local->tx_pending_tasklet);
+ tasklet_kill(&local->tasklet);
+
+ rtnl_lock();
+
+ BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED);
+
+ local->reg_state = IEEE80211_DEV_UNREGISTERED;
+
+ /*
+ * At this point, interface list manipulations are fine
+ * because the driver cannot be handing us frames any
+ * more and the tasklet is killed.
+ */
+
+ /*
+ * First, we remove all non-master interfaces. Do this because they
+ * may have bss pointer dependency on the master, and when we free
+ * the master these would be freed as well, breaking our list
+ * iteration completely.
+ */
+ list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
+ if (sdata->dev == local->mdev)
+ continue;
+ list_del(&sdata->list);
+ __ieee80211_if_del(local, sdata);
+ }
+
+ /* then, finally, remove the master interface */
+ __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev));
+
+ rtnl_unlock();
+
+ ieee80211_rx_bss_list_deinit(local->mdev);
+ ieee80211_clear_tx_pending(local);
+ sta_info_stop(local);
+ rate_control_deinitialize(local);
+ debugfs_hw_del(local);
+
+ if (skb_queue_len(&local->skb_queue)
+ || skb_queue_len(&local->skb_queue_unreliable))
+ printk(KERN_WARNING "%s: skb_queue not empty\n",
+ wiphy_name(local->hw.wiphy));
+ skb_queue_purge(&local->skb_queue);
+ skb_queue_purge(&local->skb_queue_unreliable);
+
+ destroy_workqueue(local->hw.workqueue);
+ wiphy_unregister(local->hw.wiphy);
+ ieee80211_wep_free(local);
+ ieee80211_led_exit(local);
+ ieee80211_if_free(local->mdev);
+ local->mdev = NULL;
+}
+EXPORT_SYMBOL(ieee80211_unregister_hw);
+
+void ieee80211_free_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ wiphy_free(local->hw.wiphy);
+}
+EXPORT_SYMBOL(ieee80211_free_hw);
+
+static int __init ieee80211_init(void)
+{
+ struct sk_buff *skb;
+ int ret;
+
+ BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
+
+ ret = rc80211_pid_init();
+ if (ret)
+ goto out;
+
+ ret = ieee80211_wme_register();
+ if (ret) {
+ printk(KERN_DEBUG "ieee80211_init: failed to "
+ "initialize WME (err=%d)\n", ret);
+ goto out_cleanup_pid;
+ }
+
+ ieee80211_debugfs_netdev_init();
+
+ return 0;
+
+ out_cleanup_pid:
+ rc80211_pid_exit();
+ out:
+ return ret;
+}
+
+static void __exit ieee80211_exit(void)
+{
+ rc80211_pid_exit();
+
+ /*
+ * For key todo, it'll be empty by now but the work
+ * might still be scheduled.
+ */
+ flush_scheduled_work();
+
+ if (mesh_allocated)
+ ieee80211s_stop();
+
+ ieee80211_wme_unregister();
+ ieee80211_debugfs_netdev_exit();
+}
+
+
+subsys_initcall(ieee80211_init);
+module_exit(ieee80211_exit);
+
+MODULE_DESCRIPTION("IEEE 802.11 subsystem");
+MODULE_LICENSE("GPL");
#include <linux/kernel.h>
#include <linux/random.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "mesh.h"
#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
--- /dev/null
+/*
+ * BSS client mode implementation
+ * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* TODO:
+ * order BSS list by RSSI(?) ("quality of AP")
+ * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
+ * SSID)
+ */
+#include <linux/delay.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <asm/types.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "rate.h"
+#include "led.h"
+#include "mesh.h"
+
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
+#define IEEE80211_PROBE_INTERVAL (60 * HZ)
+#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
+#define IEEE80211_SCAN_INTERVAL (2 * HZ)
+#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
+#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
+
+#define IEEE80211_PROBE_DELAY (HZ / 33)
+#define IEEE80211_CHANNEL_TIME (HZ / 33)
+#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
+#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
+#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
+#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
+#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
+
+#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
+
+
+#define ERP_INFO_USE_PROTECTION BIT(1)
+
+/* mgmt header + 1 byte action code */
+#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
+
+#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
+#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
+#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
+#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
+#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
+
+/* next values represent the buffer size for A-MPDU frame.
+ * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
+#define IEEE80211_MIN_AMPDU_BUF 0x8
+#define IEEE80211_MAX_AMPDU_BUF 0x40
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len);
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len);
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss);
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta);
+static int ieee80211_sta_wep_configured(struct net_device *dev);
+static int ieee80211_sta_start_scan(struct net_device *dev,
+ u8 *ssid, size_t ssid_len);
+static int ieee80211_sta_config_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta);
+
+
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems)
+{
+ size_t left = len;
+ u8 *pos = start;
+
+ memset(elems, 0, sizeof(*elems));
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left)
+ return;
+
+ switch (id) {
+ case WLAN_EID_SSID:
+ elems->ssid = pos;
+ elems->ssid_len = elen;
+ break;
+ case WLAN_EID_SUPP_RATES:
+ elems->supp_rates = pos;
+ elems->supp_rates_len = elen;
+ break;
+ case WLAN_EID_FH_PARAMS:
+ elems->fh_params = pos;
+ elems->fh_params_len = elen;
+ break;
+ case WLAN_EID_DS_PARAMS:
+ elems->ds_params = pos;
+ elems->ds_params_len = elen;
+ break;
+ case WLAN_EID_CF_PARAMS:
+ elems->cf_params = pos;
+ elems->cf_params_len = elen;
+ break;
+ case WLAN_EID_TIM:
+ elems->tim = pos;
+ elems->tim_len = elen;
+ break;
+ case WLAN_EID_IBSS_PARAMS:
+ elems->ibss_params = pos;
+ elems->ibss_params_len = elen;
+ break;
+ case WLAN_EID_CHALLENGE:
+ elems->challenge = pos;
+ elems->challenge_len = elen;
+ break;
+ case WLAN_EID_WPA:
+ if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
+ pos[2] == 0xf2) {
+ /* Microsoft OUI (00:50:F2) */
+ if (pos[3] == 1) {
+ /* OUI Type 1 - WPA IE */
+ elems->wpa = pos;
+ elems->wpa_len = elen;
+ } else if (elen >= 5 && pos[3] == 2) {
+ if (pos[4] == 0) {
+ elems->wmm_info = pos;
+ elems->wmm_info_len = elen;
+ } else if (pos[4] == 1) {
+ elems->wmm_param = pos;
+ elems->wmm_param_len = elen;
+ }
+ }
+ }
+ break;
+ case WLAN_EID_RSN:
+ elems->rsn = pos;
+ elems->rsn_len = elen;
+ break;
+ case WLAN_EID_ERP_INFO:
+ elems->erp_info = pos;
+ elems->erp_info_len = elen;
+ break;
+ case WLAN_EID_EXT_SUPP_RATES:
+ elems->ext_supp_rates = pos;
+ elems->ext_supp_rates_len = elen;
+ break;
+ case WLAN_EID_HT_CAPABILITY:
+ elems->ht_cap_elem = pos;
+ elems->ht_cap_elem_len = elen;
+ break;
+ case WLAN_EID_HT_EXTRA_INFO:
+ elems->ht_info_elem = pos;
+ elems->ht_info_elem_len = elen;
+ break;
+ case WLAN_EID_MESH_ID:
+ elems->mesh_id = pos;
+ elems->mesh_id_len = elen;
+ break;
+ case WLAN_EID_MESH_CONFIG:
+ elems->mesh_config = pos;
+ elems->mesh_config_len = elen;
+ break;
+ case WLAN_EID_PEER_LINK:
+ elems->peer_link = pos;
+ elems->peer_link_len = elen;
+ break;
+ case WLAN_EID_PREQ:
+ elems->preq = pos;
+ elems->preq_len = elen;
+ break;
+ case WLAN_EID_PREP:
+ elems->prep = pos;
+ elems->prep_len = elen;
+ break;
+ case WLAN_EID_PERR:
+ elems->perr = pos;
+ elems->perr_len = elen;
+ break;
+ default:
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+}
+
+
+static int ecw2cw(int ecw)
+{
+ return (1 << ecw) - 1;
+}
+
+
+static void ieee80211_sta_def_wmm_params(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ int ibss)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ int i, have_higher_than_11mbit = 0;
+
+
+ /* cf. IEEE 802.11 9.2.12 */
+ for (i = 0; i < bss->supp_rates_len; i++)
+ if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
+ have_higher_than_11mbit = 1;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+
+
+ if (local->ops->conf_tx) {
+ struct ieee80211_tx_queue_params qparam;
+
+ memset(&qparam, 0, sizeof(qparam));
+
+ qparam.aifs = 2;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+ qparam.cw_min = 31;
+ else
+ qparam.cw_min = 15;
+
+ qparam.cw_max = 1023;
+ qparam.txop = 0;
+
+ for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
+ local->ops->conf_tx(local_to_hw(local),
+ i + IEEE80211_TX_QUEUE_DATA0,
+ &qparam);
+
+ if (ibss) {
+ /* IBSS uses different parameters for Beacon sending */
+ qparam.cw_min++;
+ qparam.cw_min *= 2;
+ qparam.cw_min--;
+ local->ops->conf_tx(local_to_hw(local),
+ IEEE80211_TX_QUEUE_BEACON, &qparam);
+ }
+ }
+}
+
+static void ieee80211_sta_wmm_params(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ u8 *wmm_param, size_t wmm_param_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_tx_queue_params params;
+ size_t left;
+ int count;
+ u8 *pos;
+
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return;
+ count = wmm_param[6] & 0x0f;
+ if (count == ifsta->wmm_last_param_set)
+ return;
+ ifsta->wmm_last_param_set = count;
+
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
+
+ memset(¶ms, 0, sizeof(params));
+
+ if (!local->ops->conf_tx)
+ return;
+
+ local->wmm_acm = 0;
+ for (; left >= 4; left -= 4, pos += 4) {
+ int aci = (pos[0] >> 5) & 0x03;
+ int acm = (pos[0] >> 4) & 0x01;
+ int queue;
+
+ switch (aci) {
+ case 1:
+ queue = IEEE80211_TX_QUEUE_DATA3;
+ if (acm) {
+ local->wmm_acm |= BIT(0) | BIT(3);
+ }
+ break;
+ case 2:
+ queue = IEEE80211_TX_QUEUE_DATA1;
+ if (acm) {
+ local->wmm_acm |= BIT(4) | BIT(5);
+ }
+ break;
+ case 3:
+ queue = IEEE80211_TX_QUEUE_DATA0;
+ if (acm) {
+ local->wmm_acm |= BIT(6) | BIT(7);
+ }
+ break;
+ case 0:
+ default:
+ queue = IEEE80211_TX_QUEUE_DATA2;
+ if (acm) {
+ local->wmm_acm |= BIT(1) | BIT(2);
+ }
+ break;
+ }
+
+ params.aifs = pos[0] & 0x0f;
+ params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+ params.cw_min = ecw2cw(pos[1] & 0x0f);
+ params.txop = pos[2] | (pos[3] << 8);
+#ifdef CONFIG_MAC80211_DEBUG
+ printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d txop=%d\n",
+ dev->name, queue, aci, acm, params.aifs, params.cw_min,
+ params.cw_max, params.txop);
+#endif
+ /* TODO: handle ACM (block TX, fallback to next lowest allowed
+ * AC for now) */
+ if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
+ printk(KERN_DEBUG "%s: failed to set TX queue "
+ "parameters for queue %d\n", dev->name, queue);
+ }
+ }
+}
+
+
+static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
+ u8 erp_value)
+{
+ struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
+ bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
+ DECLARE_MAC_BUF(mac);
+ u32 changed = 0;
+
+ if (use_protection != bss_conf->use_cts_prot) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
+ "%s)\n",
+ sdata->dev->name,
+ use_protection ? "enabled" : "disabled",
+ print_mac(mac, ifsta->bssid));
+ }
+ bss_conf->use_cts_prot = use_protection;
+ changed |= BSS_CHANGED_ERP_CTS_PROT;
+ }
+
+ if (use_short_preamble != bss_conf->use_short_preamble) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: switched to %s barker preamble"
+ " (BSSID=%s)\n",
+ sdata->dev->name,
+ use_short_preamble ? "short" : "long",
+ print_mac(mac, ifsta->bssid));
+ }
+ bss_conf->use_short_preamble = use_short_preamble;
+ changed |= BSS_CHANGED_ERP_PREAMBLE;
+ }
+
+ return changed;
+}
+
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+ struct ieee80211_ht_info *ht_info)
+{
+
+ if (ht_info == NULL)
+ return -EINVAL;
+
+ memset(ht_info, 0, sizeof(*ht_info));
+
+ if (ht_cap_ie) {
+ u8 ampdu_info = ht_cap_ie->ampdu_params_info;
+
+ ht_info->ht_supported = 1;
+ ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
+ ht_info->ampdu_factor =
+ ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
+ ht_info->ampdu_density =
+ (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
+ memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
+ } else
+ ht_info->ht_supported = 0;
+
+ return 0;
+}
+
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ struct ieee80211_ht_addt_info *ht_add_info_ie,
+ struct ieee80211_ht_bss_info *bss_info)
+{
+ if (bss_info == NULL)
+ return -EINVAL;
+
+ memset(bss_info, 0, sizeof(*bss_info));
+
+ if (ht_add_info_ie) {
+ u16 op_mode;
+ op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
+
+ bss_info->primary_channel = ht_add_info_ie->control_chan;
+ bss_info->bss_cap = ht_add_info_ie->ht_param;
+ bss_info->bss_op_mode = (u8)(op_mode & 0xff);
+ }
+
+ return 0;
+}
+
+static void ieee80211_sta_send_associnfo(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ char *buf;
+ size_t len;
+ int i;
+ union iwreq_data wrqu;
+
+ if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
+ return;
+
+ buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
+ ifsta->assocresp_ies_len), GFP_KERNEL);
+ if (!buf)
+ return;
+
+ len = sprintf(buf, "ASSOCINFO(");
+ if (ifsta->assocreq_ies) {
+ len += sprintf(buf + len, "ReqIEs=");
+ for (i = 0; i < ifsta->assocreq_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocreq_ies[i]);
+ }
+ }
+ if (ifsta->assocresp_ies) {
+ if (ifsta->assocreq_ies)
+ len += sprintf(buf + len, " ");
+ len += sprintf(buf + len, "RespIEs=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+ len += sprintf(buf + len, ")");
+
+ if (len > IW_CUSTOM_MAX) {
+ len = sprintf(buf, "ASSOCRESPIE=");
+ for (i = 0; i < ifsta->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifsta->assocresp_ies[i]);
+ }
+ }
+
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = len;
+ wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+
+ kfree(buf);
+}
+
+
+static void ieee80211_set_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ bool assoc)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_conf *conf = &local_to_hw(local)->conf;
+ union iwreq_data wrqu;
+ u32 changed = BSS_CHANGED_ASSOC;
+
+ if (assoc) {
+ struct ieee80211_sta_bss *bss;
+
+ ifsta->flags |= IEEE80211_STA_ASSOCIATED;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ conf->channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ /* set timing information */
+ sdata->bss_conf.beacon_int = bss->beacon_int;
+ sdata->bss_conf.timestamp = bss->timestamp;
+
+ if (bss->has_erp_value)
+ changed |= ieee80211_handle_erp_ie(
+ sdata, bss->erp_value);
+
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+ changed |= BSS_CHANGED_HT;
+ sdata->bss_conf.assoc_ht = 1;
+ sdata->bss_conf.ht_conf = &conf->ht_conf;
+ sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
+ }
+
+ netif_carrier_on(dev);
+ ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
+ memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ ieee80211_sta_send_associnfo(dev, ifsta);
+ } else {
+ ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
+ ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
+ netif_carrier_off(dev);
+ ieee80211_reset_erp_info(dev);
+
+ sdata->bss_conf.assoc_ht = 0;
+ sdata->bss_conf.ht_conf = NULL;
+ sdata->bss_conf.ht_bss_conf = NULL;
+
+ memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
+ }
+ ifsta->last_probe = jiffies;
+ ieee80211_led_assoc(local, assoc);
+
+ sdata->bss_conf.assoc = assoc;
+ ieee80211_bss_info_change_notify(sdata, changed);
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+}
+
+static void ieee80211_set_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, int deauth)
+{
+ if (deauth)
+ ifsta->auth_tries = 0;
+ ifsta->assoc_tries = 0;
+ ieee80211_set_associated(dev, ifsta, 0);
+}
+
+void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+ int encrypt)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_tx_packet_data *pkt_data;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ skb->dev = sdata->local->mdev;
+ skb_set_mac_header(skb, 0);
+ skb_set_network_header(skb, 0);
+ skb_set_transport_header(skb, 0);
+
+ pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+ memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+ pkt_data->ifindex = sdata->dev->ifindex;
+ if (!encrypt)
+ pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
+
+ dev_queue_xmit(skb);
+}
+
+
+static void ieee80211_send_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ int transaction, u8 *extra, size_t extra_len,
+ int encrypt)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + 6 + extra_len);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
+ memset(mgmt, 0, 24 + 6);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_AUTH);
+ if (encrypt)
+ mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
+ mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
+ ifsta->auth_transaction = transaction + 1;
+ mgmt->u.auth.status_code = cpu_to_le16(0);
+ if (extra)
+ memcpy(skb_put(skb, extra_len), extra, extra_len);
+
+ ieee80211_sta_tx(dev, skb, encrypt);
+}
+
+
+static void ieee80211_authenticate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ DECLARE_MAC_BUF(mac);
+
+ ifsta->auth_tries++;
+ if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: authentication with AP %s"
+ " timed out\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ printk(KERN_DEBUG "%s: authenticate with AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+
+ ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
+}
+
+
+static void ieee80211_send_assoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *ies;
+ int i, len;
+ u16 capab;
+ struct ieee80211_sta_bss *bss;
+ int wmm = 0;
+ struct ieee80211_supported_band *sband;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
+ ifsta->ssid_len);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ capab = ifsta->capab;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+ }
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ capab |= WLAN_CAPABILITY_PRIVACY;
+ if (bss->wmm_ie) {
+ wmm = 1;
+ }
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+ skb_put(skb, 10);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_REASSOC_REQ);
+ mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
+ memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+ ETH_ALEN);
+ } else {
+ skb_put(skb, 4);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ASSOC_REQ);
+ mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
+ }
+
+ /* SSID */
+ ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ len = sband->n_bitrates;
+ if (len > 8)
+ len = 8;
+ pos = skb_put(skb, len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = len;
+ for (i = 0; i < len; i++) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ if (sband->n_bitrates > len) {
+ pos = skb_put(skb, sband->n_bitrates - len + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = sband->n_bitrates - len;
+ for (i = len; i < sband->n_bitrates; i++) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+
+ if (ifsta->extra_ie) {
+ pos = skb_put(skb, ifsta->extra_ie_len);
+ memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+ }
+
+ if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ pos = skb_put(skb, 9);
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ *pos++ = 7; /* len */
+ *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
+ *pos++ = 0x50;
+ *pos++ = 0xf2;
+ *pos++ = 2; /* WME */
+ *pos++ = 0; /* WME info */
+ *pos++ = 1; /* WME ver */
+ *pos++ = 0;
+ }
+ /* wmm support is a must to HT */
+ if (wmm && sband->ht_info.ht_supported) {
+ __le16 tmp = cpu_to_le16(sband->ht_info.cap);
+ pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
+ *pos++ = WLAN_EID_HT_CAPABILITY;
+ *pos++ = sizeof(struct ieee80211_ht_cap);
+ memset(pos, 0, sizeof(struct ieee80211_ht_cap));
+ memcpy(pos, &tmp, sizeof(u16));
+ pos += sizeof(u16);
+ /* TODO: needs a define here for << 2 */
+ *pos++ = sband->ht_info.ampdu_factor |
+ (sband->ht_info.ampdu_density << 2);
+ memcpy(pos, sband->ht_info.supp_mcs_set, 16);
+ }
+
+ kfree(ifsta->assocreq_ies);
+ ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
+ ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
+ if (ifsta->assocreq_ies)
+ memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_DEAUTH);
+ skb_put(skb, 2);
+ mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static void ieee80211_send_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
+ "frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_DISASSOC);
+ skb_put(skb, 2);
+ mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_privacy_mismatch(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ int bss_privacy;
+ int wep_privacy;
+ int privacy_invoked;
+
+ if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
+ return 0;
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (!bss)
+ return 0;
+
+ bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
+ wep_privacy = !!ieee80211_sta_wep_configured(dev);
+ privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
+ return 0;
+
+ return 1;
+}
+
+
+static void ieee80211_associate(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ DECLARE_MAC_BUF(mac);
+
+ ifsta->assoc_tries++;
+ if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: association with AP %s"
+ " timed out\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ifsta->state = IEEE80211_ASSOCIATE;
+ printk(KERN_DEBUG "%s: associate with AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
+ "mixed-cell disabled - abort association\n", dev->name);
+ ifsta->state = IEEE80211_DISABLED;
+ return;
+ }
+
+ ieee80211_send_assoc(dev, ifsta);
+
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
+}
+
+
+static void ieee80211_associated(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ int disassoc;
+ DECLARE_MAC_BUF(mac);
+
+ /* TODO: start monitoring current AP signal quality and number of
+ * missed beacons. Scan other channels every now and then and search
+ * for better APs. */
+ /* TODO: remove expired BSSes */
+
+ ifsta->state = IEEE80211_ASSOCIATED;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ifsta->bssid);
+ if (!sta) {
+ printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ disassoc = 1;
+ } else {
+ disassoc = 0;
+ if (time_after(jiffies,
+ sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
+ if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
+ printk(KERN_DEBUG "%s: No ProbeResp from "
+ "current AP %s - assume out of "
+ "range\n",
+ dev->name, print_mac(mac, ifsta->bssid));
+ disassoc = 1;
+ sta_info_unlink(&sta);
+ } else
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ local->scan_ssid,
+ local->scan_ssid_len);
+ ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
+ } else {
+ ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+ if (time_after(jiffies, ifsta->last_probe +
+ IEEE80211_PROBE_INTERVAL)) {
+ ifsta->last_probe = jiffies;
+ ieee80211_send_probe_req(dev, ifsta->bssid,
+ ifsta->ssid,
+ ifsta->ssid_len);
+ }
+ }
+ }
+
+ rcu_read_unlock();
+
+ if (disassoc && sta)
+ sta_info_destroy(sta);
+
+ if (disassoc) {
+ ifsta->state = IEEE80211_DISABLED;
+ ieee80211_set_associated(dev, ifsta, 0);
+ } else {
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_MONITORING_INTERVAL);
+ }
+}
+
+
+static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
+ u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_supported_band *sband;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *supp_rates, *esupp_rates = NULL;
+ int i;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+ "request\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_PROBE_REQ);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (dst) {
+ memcpy(mgmt->da, dst, ETH_ALEN);
+ memcpy(mgmt->bssid, dst, ETH_ALEN);
+ } else {
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memset(mgmt->bssid, 0xff, ETH_ALEN);
+ }
+ pos = skb_put(skb, 2 + ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ssid_len;
+ memcpy(pos, ssid, ssid_len);
+
+ supp_rates = skb_put(skb, 2);
+ supp_rates[0] = WLAN_EID_SUPP_RATES;
+ supp_rates[1] = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *rate = &sband->bitrates[i];
+ if (esupp_rates) {
+ pos = skb_put(skb, 1);
+ esupp_rates[1]++;
+ } else if (supp_rates[1] == 8) {
+ esupp_rates = skb_put(skb, 3);
+ esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
+ esupp_rates[1] = 1;
+ pos = &esupp_rates[2];
+ } else {
+ pos = skb_put(skb, 1);
+ supp_rates[1]++;
+ }
+ *pos = rate->bitrate / 5;
+ }
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+
+static int ieee80211_sta_wep_configured(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (!sdata || !sdata->default_key ||
+ sdata->default_key->conf.alg != ALG_WEP)
+ return 0;
+ return 1;
+}
+
+
+static void ieee80211_auth_completed(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ printk(KERN_DEBUG "%s: authenticated\n", dev->name);
+ ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
+ ieee80211_associate(dev, ifsta);
+}
+
+
+static void ieee80211_auth_challenge(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u8 *pos;
+ struct ieee802_11_elems elems;
+
+ printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
+ pos = mgmt->u.auth.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+ if (!elems.challenge) {
+ printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
+ "frame\n", dev->name);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
+ elems.challenge_len + 2, 1);
+}
+
+static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
+ u8 dialog_token, u16 status, u16 policy,
+ u16 buf_size, u16 timeout)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 capab;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.addba_resp));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer "
+ "for addba resp frame\n", dev->name);
+ return;
+ }
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
+ mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
+
+ capab = (u16)(policy << 1); /* bit 1 aggregation policy */
+ capab |= (u16)(tid << 2); /* bit 5:2 TID number */
+ capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
+
+ mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
+ mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
+ mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
+
+ ieee80211_sta_tx(dev, skb, 0);
+
+ return;
+}
+
+void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
+ u16 tid, u8 dialog_token, u16 start_seq_num,
+ u16 agg_size, u16 timeout)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 capab;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.addba_req));
+
+
+ if (!skb) {
+ printk(KERN_ERR "%s: failed to allocate buffer "
+ "for addba request frame\n", dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
+
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
+
+ mgmt->u.action.u.addba_req.dialog_token = dialog_token;
+ capab = (u16)(1 << 1); /* bit 1 aggregation policy */
+ capab |= (u16)(tid << 2); /* bit 5:2 TID number */
+ capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */
+
+ mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
+
+ mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
+ mgmt->u.action.u.addba_req.start_seq_num =
+ cpu_to_le16(start_seq_num << 4);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+static void ieee80211_sta_process_addba_request(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct ieee80211_conf *conf = &hw->conf;
+ struct sta_info *sta;
+ struct tid_ampdu_rx *tid_agg_rx;
+ u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
+ u8 dialog_token;
+ int ret = -EOPNOTSUPP;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ /* extract session parameters from addba request frame */
+ dialog_token = mgmt->u.action.u.addba_req.dialog_token;
+ timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
+ start_seq_num =
+ le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
+
+ capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+ ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+ buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
+
+ status = WLAN_STATUS_REQUEST_DECLINED;
+
+ /* sanity check for incoming parameters:
+ * check if configuration can support the BA policy
+ * and if buffer size does not exceeds max value */
+ if (((ba_policy != 1)
+ && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
+ || (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
+ status = WLAN_STATUS_INVALID_QOS_PARAM;
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "AddBA Req with bad params from "
+ "%s on tid %u. policy %d, buffer size %d\n",
+ print_mac(mac, mgmt->sa), tid, ba_policy,
+ buf_size);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto end_no_lock;
+ }
+ /* determine default buffer size */
+ if (buf_size == 0) {
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[conf->channel->band];
+ buf_size = IEEE80211_MIN_AMPDU_BUF;
+ buf_size = buf_size << sband->ht_info.ampdu_factor;
+ }
+
+
+ /* examine state machine */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+ if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "unexpected AddBA Req from "
+ "%s on tid %u\n",
+ print_mac(mac, mgmt->sa), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto end;
+ }
+
+ /* prepare A-MPDU MLME for Rx aggregation */
+ sta->ampdu_mlme.tid_rx[tid] =
+ kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
+ if (!sta->ampdu_mlme.tid_rx[tid]) {
+ if (net_ratelimit())
+ printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
+ tid);
+ goto end;
+ }
+ /* rx timer */
+ sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
+ sta_rx_agg_session_timer_expired;
+ sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
+ (unsigned long)&sta->timer_to_tid[tid];
+ init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+ tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
+
+ /* prepare reordering buffer */
+ tid_agg_rx->reorder_buf =
+ kmalloc(buf_size * sizeof(struct sk_buf *), GFP_ATOMIC);
+ if (!tid_agg_rx->reorder_buf) {
+ if (net_ratelimit())
+ printk(KERN_ERR "can not allocate reordering buffer "
+ "to tid %d\n", tid);
+ kfree(sta->ampdu_mlme.tid_rx[tid]);
+ goto end;
+ }
+ memset(tid_agg_rx->reorder_buf, 0,
+ buf_size * sizeof(struct sk_buf *));
+
+ if (local->ops->ampdu_action)
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
+ sta->addr, tid, &start_seq_num);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ if (ret) {
+ kfree(tid_agg_rx->reorder_buf);
+ kfree(tid_agg_rx);
+ sta->ampdu_mlme.tid_rx[tid] = NULL;
+ goto end;
+ }
+
+ /* change state and send addba resp */
+ sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
+ tid_agg_rx->dialog_token = dialog_token;
+ tid_agg_rx->ssn = start_seq_num;
+ tid_agg_rx->head_seq_num = start_seq_num;
+ tid_agg_rx->buf_size = buf_size;
+ tid_agg_rx->timeout = timeout;
+ tid_agg_rx->stored_mpdu_num = 0;
+ status = WLAN_STATUS_SUCCESS;
+end:
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+end_no_lock:
+ ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid,
+ dialog_token, status, 1, buf_size, timeout);
+ rcu_read_unlock();
+}
+
+static void ieee80211_sta_process_addba_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ u16 capab;
+ u16 tid;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:"
+ "%d\n", *state);
+ goto addba_resp_exit;
+ }
+
+ if (mgmt->u.action.u.addba_resp.dialog_token !=
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ goto addba_resp_exit;
+ }
+
+ del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+ if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
+ == WLAN_STATUS_SUCCESS) {
+ if (*state & HT_ADDBA_RECEIVED_MSK)
+ printk(KERN_DEBUG "double addBA response\n");
+
+ *state |= HT_ADDBA_RECEIVED_MSK;
+ sta->ampdu_mlme.addba_req_num[tid] = 0;
+
+ if (*state == HT_AGG_STATE_OPERATIONAL) {
+ printk(KERN_DEBUG "Aggregation on for tid %d \n", tid);
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ }
+
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid);
+ } else {
+ printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid);
+
+ sta->ampdu_mlme.addba_req_num[tid]++;
+ /* this will allow the state check in stop_BA_session */
+ *state = HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+ }
+
+addba_resp_exit:
+ rcu_read_unlock();
+}
+
+void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
+ u16 initiator, u16 reason_code)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u16 params;
+
+ skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 +
+ sizeof(mgmt->u.action.u.delba));
+
+ if (!skb) {
+ printk(KERN_ERR "%s: failed to allocate buffer "
+ "for delba frame\n", dev->name);
+ return;
+ }
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ memcpy(mgmt->da, da, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
+
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
+ params = (u16)(initiator << 11); /* bit 11 initiator */
+ params |= (u16)(tid << 12); /* bit 15:12 TID number */
+
+ mgmt->u.action.u.delba.params = cpu_to_le16(params);
+ mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid,
+ u16 initiator, u16 reason)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ int ret, i;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, ra);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ /* check if TID is in operational state */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
+ if (sta->ampdu_mlme.tid_state_rx[tid]
+ != HT_AGG_STATE_OPERATIONAL) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+ rcu_read_unlock();
+ return;
+ }
+ sta->ampdu_mlme.tid_state_rx[tid] =
+ HT_AGG_STATE_REQ_STOP_BA_MSK |
+ (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+
+ /* stop HW Rx aggregation. ampdu_action existence
+ * already verified in session init so we add the BUG_ON */
+ BUG_ON(!local->ops->ampdu_action);
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
+ print_mac(mac, ra), tid);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
+ ra, tid, NULL);
+ if (ret)
+ printk(KERN_DEBUG "HW problem - can not stop rx "
+ "aggergation for tid %d\n", tid);
+
+ /* shutdown timer has not expired */
+ if (initiator != WLAN_BACK_TIMER)
+ del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
+
+ /* check if this is a self generated aggregation halt */
+ if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
+ ieee80211_send_delba(dev, ra, tid, 0, reason);
+
+ /* free the reordering buffer */
+ for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
+ if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
+ /* release the reordered frames */
+ dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
+ sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
+ sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
+ }
+ }
+ /* free resources */
+ kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
+ kfree(sta->ampdu_mlme.tid_rx[tid]);
+ sta->ampdu_mlme.tid_rx[tid] = NULL;
+ sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
+
+ rcu_read_unlock();
+}
+
+
+static void ieee80211_sta_process_delba(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ u16 tid, params;
+ u16 initiator;
+ DECLARE_MAC_BUF(mac);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ params = le16_to_cpu(mgmt->u.action.u.delba.params);
+ tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
+ initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
+
+#ifdef CONFIG_MAC80211_HT_DEBUG
+ if (net_ratelimit())
+ printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
+ print_mac(mac, mgmt->sa),
+ initiator ? "initiator" : "recipient", tid,
+ mgmt->u.action.u.delba.reason_code);
+#endif /* CONFIG_MAC80211_HT_DEBUG */
+
+ if (initiator == WLAN_BACK_INITIATOR)
+ ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid,
+ WLAN_BACK_INITIATOR, 0);
+ else { /* WLAN_BACK_RECIPIENT */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ sta->ampdu_mlme.tid_state_tx[tid] =
+ HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
+ WLAN_BACK_RECIPIENT);
+ }
+ rcu_read_unlock();
+}
+
+/*
+ * After sending add Block Ack request we activated a timer until
+ * add Block Ack response will arrive from the recipient.
+ * If this timer expires sta_addba_resp_timer_expired will be executed.
+ */
+void sta_addba_resp_timer_expired(unsigned long data)
+{
+ /* not an elegant detour, but there is no choice as the timer passes
+ * only one argument, and both sta_info and TID are needed, so init
+ * flow in sta_info_create gives the TID as data, while the timer_to_id
+ * array gives the sta through container_of */
+ u16 tid = *(int *)data;
+ struct sta_info *temp_sta = container_of((void *)data,
+ struct sta_info, timer_to_tid[tid]);
+
+ struct ieee80211_local *local = temp_sta->local;
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, temp_sta->addr);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* check if the TID waits for addBA response */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ *state = HT_AGG_STATE_IDLE;
+ printk(KERN_DEBUG "timer expired on tid %d but we are not "
+ "expecting addBA response there", tid);
+ goto timer_expired_exit;
+ }
+
+ printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
+
+ /* go through the state check in stop_BA_session */
+ *state = HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+
+timer_expired_exit:
+ rcu_read_unlock();
+}
+
+/*
+ * After accepting the AddBA Request we activated a timer,
+ * resetting it after each frame that arrives from the originator.
+ * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
+ */
+void sta_rx_agg_session_timer_expired(unsigned long data)
+{
+ /* not an elegant detour, but there is no choice as the timer passes
+ * only one argument, and verious sta_info are needed here, so init
+ * flow in sta_info_create gives the TID as data, while the timer_to_id
+ * array gives the sta through container_of */
+ u8 *ptid = (u8 *)data;
+ u8 *timer_to_id = ptid - *ptid;
+ struct sta_info *sta = container_of(timer_to_id, struct sta_info,
+ timer_to_tid[0]);
+
+ printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
+ ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr,
+ (u16)*ptid, WLAN_BACK_TIMER,
+ WLAN_REASON_QSTA_TIMEOUT);
+}
+
+void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int i;
+
+ for (i = 0; i < STA_TID_NUM; i++) {
+ ieee80211_stop_tx_ba_session(&local->hw, addr, i,
+ WLAN_BACK_INITIATOR);
+ ieee80211_sta_stop_rx_ba_session(dev, addr, i,
+ WLAN_BACK_RECIPIENT,
+ WLAN_REASON_QSTA_LEAVE_QBSS);
+ }
+}
+
+static void ieee80211_rx_mgmt_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ u16 auth_alg, auth_transaction, status_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (ifsta->state != IEEE80211_AUTHENTICATE &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "%s, but not in authenticate state - ignored\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: authentication frame received from "
+ "unknown BSSID (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+ auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+ status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+ printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d "
+ "transaction=%d status=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), auth_alg,
+ auth_transaction, status_code);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ /* IEEE 802.11 standard does not require authentication in IBSS
+ * networks and most implementations do not seem to use it.
+ * However, try to reply to authentication attempts if someone
+ * has actually implemented this.
+ * TODO: Could implement shared key authentication. */
+ if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
+ printk(KERN_DEBUG "%s: unexpected IBSS authentication "
+ "frame (alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+ ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
+ }
+
+ if (auth_alg != ifsta->auth_alg ||
+ auth_transaction != ifsta->auth_transaction) {
+ printk(KERN_DEBUG "%s: unexpected authentication frame "
+ "(alg=%d transaction=%d)\n",
+ dev->name, auth_alg, auth_transaction);
+ return;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
+ "code=%d)\n", dev->name, ifsta->auth_alg, status_code);
+ if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
+ u8 algs[3];
+ const int num_algs = ARRAY_SIZE(algs);
+ int i, pos;
+ algs[0] = algs[1] = algs[2] = 0xff;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ algs[0] = WLAN_AUTH_OPEN;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ algs[1] = WLAN_AUTH_SHARED_KEY;
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ algs[2] = WLAN_AUTH_LEAP;
+ if (ifsta->auth_alg == WLAN_AUTH_OPEN)
+ pos = 0;
+ else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
+ pos = 1;
+ else
+ pos = 2;
+ for (i = 0; i < num_algs; i++) {
+ pos++;
+ if (pos >= num_algs)
+ pos = 0;
+ if (algs[pos] == ifsta->auth_alg ||
+ algs[pos] == 0xff)
+ continue;
+ if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
+ !ieee80211_sta_wep_configured(dev))
+ continue;
+ ifsta->auth_alg = algs[pos];
+ printk(KERN_DEBUG "%s: set auth_alg=%d for "
+ "next try\n",
+ dev->name, ifsta->auth_alg);
+ break;
+ }
+ }
+ return;
+ }
+
+ switch (ifsta->auth_alg) {
+ case WLAN_AUTH_OPEN:
+ case WLAN_AUTH_LEAP:
+ ieee80211_auth_completed(dev, ifsta);
+ break;
+ case WLAN_AUTH_SHARED_KEY:
+ if (ifsta->auth_transaction == 4)
+ ieee80211_auth_completed(dev, ifsta);
+ else
+ ieee80211_auth_challenge(dev, ifsta, mgmt, len);
+ break;
+ }
+}
+
+
+static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u16 reason_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: deauthentication frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
+
+ printk(KERN_DEBUG "%s: RX deauthentication from %s"
+ " (reason=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), reason_code);
+
+ if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) {
+ printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
+ }
+
+ if (ifsta->state == IEEE80211_AUTHENTICATE ||
+ ifsta->state == IEEE80211_ASSOCIATE ||
+ ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_disassoc(dev, ifsta, 1);
+ ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
+}
+
+
+static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u16 reason_code;
+ DECLARE_MAC_BUF(mac);
+
+ if (len < 24 + 2) {
+ printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: disassociation frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
+
+ printk(KERN_DEBUG "%s: RX disassociation from %s"
+ " (reason=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), reason_code);
+
+ if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
+ printk(KERN_DEBUG "%s: disassociated\n", dev->name);
+
+ if (ifsta->state == IEEE80211_ASSOCIATED) {
+ ifsta->state = IEEE80211_ASSOCIATE;
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_RETRY_AUTH_INTERVAL);
+ }
+
+ ieee80211_set_disassoc(dev, ifsta, 0);
+}
+
+
+static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ int reassoc)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct net_device *dev = sdata->dev;
+ struct ieee80211_supported_band *sband;
+ struct sta_info *sta;
+ u64 rates, basic_rates;
+ u16 capab_info, status_code, aid;
+ struct ieee802_11_elems elems;
+ struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+ u8 *pos;
+ int i, j;
+ DECLARE_MAC_BUF(mac);
+ bool have_higher_than_11mbit = false;
+
+ /* AssocResp and ReassocResp have identical structure, so process both
+ * of them in this function. */
+
+ if (ifsta->state != IEEE80211_ASSOCIATE) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ "%s, but not in associate state - ignored\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (len < 24 + 6) {
+ printk(KERN_DEBUG "%s: too short (%zd) association frame "
+ "received from %s - ignored\n",
+ dev->name, len, print_mac(mac, mgmt->sa));
+ return;
+ }
+
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
+ printk(KERN_DEBUG "%s: association frame received from "
+ "unknown AP (SA=%s BSSID=%s) - "
+ "ignored\n", dev->name, print_mac(mac, mgmt->sa),
+ print_mac(mac, mgmt->bssid));
+ return;
+ }
+
+ capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+ status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+ aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+
+ printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
+ "status=%d aid=%d)\n",
+ dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
+ capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
+ dev->name, status_code);
+ /* if this was a reassociation, ensure we try a "full"
+ * association next time. This works around some broken APs
+ * which do not correctly reject reassociation requests. */
+ ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ return;
+ }
+
+ if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
+ printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
+ "set\n", dev->name, aid);
+ aid &= ~(BIT(15) | BIT(14));
+
+ pos = mgmt->u.assoc_resp.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+
+ if (!elems.supp_rates) {
+ printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
+ dev->name);
+ return;
+ }
+
+ printk(KERN_DEBUG "%s: associated\n", dev->name);
+ ifsta->aid = aid;
+ ifsta->ap_capab = capab_info;
+
+ kfree(ifsta->assocresp_ies);
+ ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
+ ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
+ if (ifsta->assocresp_ies)
+ memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
+
+ rcu_read_lock();
+
+ /* Add STA entry for the AP */
+ sta = sta_info_get(local, ifsta->bssid);
+ if (!sta) {
+ struct ieee80211_sta_bss *bss;
+ int err;
+
+ sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
+ if (!sta) {
+ printk(KERN_DEBUG "%s: failed to alloc STA entry for"
+ " the AP\n", dev->name);
+ rcu_read_unlock();
+ return;
+ }
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ if (bss) {
+ sta->last_rssi = bss->rssi;
+ sta->last_signal = bss->signal;
+ sta->last_noise = bss->noise;
+ ieee80211_rx_bss_put(dev, bss);
+ }
+
+ err = sta_info_insert(sta);
+ if (err) {
+ printk(KERN_DEBUG "%s: failed to insert STA entry for"
+ " the AP (error %d)\n", dev->name, err);
+ rcu_read_unlock();
+ return;
+ }
+ }
+
+ /*
+ * FIXME: Do we really need to update the sta_info's information here?
+ * We already know about the AP (we found it in our list) so it
+ * should already be filled with the right info, no?
+ * As is stands, all this is racy because typically we assume
+ * the information that is filled in here (except flags) doesn't
+ * change while a STA structure is alive. As such, it should move
+ * to between the sta_info_alloc() and sta_info_insert() above.
+ */
+
+ sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP |
+ WLAN_STA_AUTHORIZED;
+
+ rates = 0;
+ basic_rates = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ for (i = 0; i < elems.supp_rates_len; i++) {
+ int rate = (elems.supp_rates[i] & 0x7f) * 5;
+
+ if (rate > 110)
+ have_higher_than_11mbit = true;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ if (elems.supp_rates[i] & 0x80)
+ basic_rates |= BIT(j);
+ }
+ }
+
+ for (i = 0; i < elems.ext_supp_rates_len; i++) {
+ int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
+
+ if (rate > 110)
+ have_higher_than_11mbit = true;
+
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate)
+ rates |= BIT(j);
+ if (elems.ext_supp_rates[i] & 0x80)
+ basic_rates |= BIT(j);
+ }
+ }
+
+ sta->supp_rates[local->hw.conf.channel->band] = rates;
+ sdata->basic_rates = basic_rates;
+
+ /* cf. IEEE 802.11 9.2.12 */
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+
+ if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) {
+ struct ieee80211_ht_bss_info bss_info;
+ ieee80211_ht_cap_ie_to_ht_info(
+ (struct ieee80211_ht_cap *)
+ elems.ht_cap_elem, &sta->ht_info);
+ ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ (struct ieee80211_ht_addt_info *)
+ elems.ht_info_elem, &bss_info);
+ ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
+ }
+
+ rate_control_rate_init(sta, local);
+
+ if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ sta->flags |= WLAN_STA_WME;
+ rcu_read_unlock();
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ } else
+ rcu_read_unlock();
+
+ /* set AID and assoc capability,
+ * ieee80211_set_associated() will tell the driver */
+ bss_conf->aid = aid;
+ bss_conf->assoc_capability = capab_info;
+ ieee80211_set_associated(dev, ifsta, 1);
+
+ ieee80211_associated(dev, ifsta);
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ u8 hash_idx;
+
+ if (bss_mesh_cfg(bss))
+ hash_idx = mesh_id_hash(bss_mesh_id(bss),
+ bss_mesh_id_len(bss));
+ else
+ hash_idx = STA_HASH(bss->bssid);
+
+ bss->hnext = local->sta_bss_hash[hash_idx];
+ local->sta_bss_hash[hash_idx] = bss;
+}
+
+
+/* Caller must hold local->sta_bss_lock */
+static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *b, *prev = NULL;
+ b = local->sta_bss_hash[STA_HASH(bss->bssid)];
+ while (b) {
+ if (b == bss) {
+ if (!prev)
+ local->sta_bss_hash[STA_HASH(bss->bssid)] =
+ bss->hnext;
+ else
+ prev->hnext = bss->hnext;
+ break;
+ }
+ prev = b;
+ b = b->hnext;
+ }
+}
+
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+ if (!bss)
+ return NULL;
+ atomic_inc(&bss->users);
+ atomic_inc(&bss->users);
+ memcpy(bss->bssid, bssid, ETH_ALEN);
+ bss->freq = freq;
+ if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
+ memcpy(bss->ssid, ssid, ssid_len);
+ bss->ssid_len = ssid_len;
+ }
+
+ spin_lock_bh(&local->sta_bss_lock);
+ /* TODO: order by RSSI? */
+ list_add_tail(&bss->list, &local->sta_bss_list);
+ __ieee80211_rx_bss_hash_add(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
+ u8 *ssid, u8 ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ bss = local->sta_bss_hash[STA_HASH(bssid)];
+ while (bss) {
+ if (!bss_mesh_cfg(bss) &&
+ !memcmp(bss->bssid, bssid, ETH_ALEN) &&
+ bss->freq == freq &&
+ bss->ssid_len == ssid_len &&
+ (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
+ atomic_inc(&bss->users);
+ break;
+ }
+ bss = bss->hnext;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+#ifdef CONFIG_MAC80211_MESH
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
+ while (bss) {
+ if (bss_mesh_cfg(bss) &&
+ !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
+ bss->freq == freq &&
+ mesh_id_len == bss->mesh_id_len &&
+ (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
+ mesh_id_len))) {
+ atomic_inc(&bss->users);
+ break;
+ }
+ bss = bss->hnext;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int mesh_config_len, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+
+ if (mesh_config_len != MESH_CFG_LEN)
+ return NULL;
+
+ bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
+ if (!bss)
+ return NULL;
+
+ bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
+ if (!bss->mesh_cfg) {
+ kfree(bss);
+ return NULL;
+ }
+
+ if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
+ bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
+ if (!bss->mesh_id) {
+ kfree(bss->mesh_cfg);
+ kfree(bss);
+ return NULL;
+ }
+ memcpy(bss->mesh_id, mesh_id, mesh_id_len);
+ }
+
+ atomic_inc(&bss->users);
+ atomic_inc(&bss->users);
+ memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
+ bss->mesh_id_len = mesh_id_len;
+ bss->freq = freq;
+ spin_lock_bh(&local->sta_bss_lock);
+ /* TODO: order by RSSI? */
+ list_add_tail(&bss->list, &local->sta_bss_list);
+ __ieee80211_rx_bss_hash_add(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+#endif
+
+static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
+{
+ kfree(bss->wpa_ie);
+ kfree(bss->rsn_ie);
+ kfree(bss->wmm_ie);
+ kfree(bss->ht_ie);
+ kfree(bss_mesh_id(bss));
+ kfree(bss_mesh_cfg(bss));
+ kfree(bss);
+}
+
+
+static void ieee80211_rx_bss_put(struct net_device *dev,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ if (!atomic_dec_and_test(&bss->users))
+ return;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ __ieee80211_rx_bss_hash_del(dev, bss);
+ list_del(&bss->list);
+ spin_unlock_bh(&local->sta_bss_lock);
+ ieee80211_rx_bss_free(bss);
+}
+
+
+void ieee80211_rx_bss_list_init(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ spin_lock_init(&local->sta_bss_lock);
+ INIT_LIST_HEAD(&local->sta_bss_list);
+}
+
+
+void ieee80211_rx_bss_list_deinit(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss, *tmp;
+
+ list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
+ ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static int ieee80211_sta_join_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int res, rates, i, j;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_tx_control control;
+ struct rate_selection ratesel;
+ u8 *pos;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* Remove possible STA entries from other IBSS networks. */
+ sta_info_flush_delayed(sdata);
+
+ if (local->ops->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->ops->reset_tsf(local_to_hw(local));
+ }
+ memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+ res = ieee80211_if_config(dev);
+ if (res)
+ return res;
+
+ local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+
+ sdata->drop_unencrypted = bss->capability &
+ WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+
+ res = ieee80211_set_freq(local, bss->freq);
+
+ if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+ "%d MHz\n", dev->name, local->oper_channel->center_freq);
+ return -1;
+ }
+
+ /* Set beacon template */
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ do {
+ if (!skb)
+ break;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+ memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_BEACON);
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ mgmt->u.beacon.beacon_int =
+ cpu_to_le16(local->hw.conf.beacon_int);
+ mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
+
+ pos = skb_put(skb, 2 + ifsta->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ifsta->ssid_len;
+ memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+
+ rates = bss->supp_rates_len;
+ if (rates > 8)
+ rates = 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, bss->supp_rates, rates);
+
+ if (bss->band == IEEE80211_BAND_2GHZ) {
+ pos = skb_put(skb, 2 + 1);
+ *pos++ = WLAN_EID_DS_PARAMS;
+ *pos++ = 1;
+ *pos++ = ieee80211_frequency_to_channel(bss->freq);
+ }
+
+ pos = skb_put(skb, 2 + 2);
+ *pos++ = WLAN_EID_IBSS_PARAMS;
+ *pos++ = 2;
+ /* FIX: set ATIM window based on scan results */
+ *pos++ = 0;
+ *pos++ = 0;
+
+ if (bss->supp_rates_len > 8) {
+ rates = bss->supp_rates_len - 8;
+ pos = skb_put(skb, 2 + rates);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = rates;
+ memcpy(pos, &bss->supp_rates[8], rates);
+ }
+
+ memset(&control, 0, sizeof(control));
+ rate_control_get_rate(dev, sband, skb, &ratesel);
+ if (!ratesel.rate) {
+ printk(KERN_DEBUG "%s: Failed to determine TX rate "
+ "for IBSS beacon\n", dev->name);
+ break;
+ }
+ control.vif = &sdata->vif;
+ control.tx_rate = ratesel.rate;
+ if (sdata->bss_conf.use_short_preamble &&
+ ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
+ control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+ control.flags |= IEEE80211_TXCTL_NO_ACK;
+ control.retry_limit = 1;
+
+ ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
+ if (ifsta->probe_resp) {
+ mgmt = (struct ieee80211_mgmt *)
+ ifsta->probe_resp->data;
+ mgmt->frame_control =
+ IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_PROBE_RESP);
+ } else {
+ printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
+ "template for IBSS\n", dev->name);
+ }
+
+ if (local->ops->beacon_update &&
+ local->ops->beacon_update(local_to_hw(local),
+ skb, &control) == 0) {
+ printk(KERN_DEBUG "%s: Configured IBSS beacon "
+ "template\n", dev->name);
+ skb = NULL;
+ }
+
+ rates = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == bitrate)
+ rates |= BIT(j);
+ }
+ ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
+
+ ieee80211_sta_def_wmm_params(dev, bss, 1);
+ } while (0);
+
+ if (skb) {
+ printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
+ "template\n", dev->name);
+ dev_kfree_skb(skb);
+ }
+
+ ifsta->state = IEEE80211_IBSS_JOINED;
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ return res;
+}
+
+u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
+ struct ieee802_11_elems *elems,
+ enum ieee80211_band band)
+{
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *bitrates;
+ size_t num_rates;
+ u64 supp_rates;
+ int i, j;
+ sband = local->hw.wiphy->bands[band];
+
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ }
+
+ bitrates = sband->bitrates;
+ num_rates = sband->n_bitrates;
+ supp_rates = 0;
+ for (i = 0; i < elems->supp_rates_len +
+ elems->ext_supp_rates_len; i++) {
+ u8 rate = 0;
+ int own_rate;
+ if (i < elems->supp_rates_len)
+ rate = elems->supp_rates[i];
+ else if (elems->ext_supp_rates)
+ rate = elems->ext_supp_rates
+ [i - elems->supp_rates_len];
+ own_rate = 5 * (rate & 0x7f);
+ for (j = 0; j < num_rates; j++)
+ if (bitrates[j].bitrate == own_rate)
+ supp_rates |= BIT(j);
+ }
+ return supp_rates;
+}
+
+
+static void ieee80211_rx_bss_info(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status,
+ int beacon)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee802_11_elems elems;
+ size_t baselen;
+ int freq, clen;
+ struct ieee80211_sta_bss *bss;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ u64 beacon_timestamp, rx_timestamp;
+ struct ieee80211_channel *channel;
+ DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mac2);
+
+ if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
+ return; /* ignore ProbeResp to foreign address */
+
+#if 0
+ printk(KERN_DEBUG "%s: RX %s from %s to %s\n",
+ dev->name, beacon ? "Beacon" : "Probe Response",
+ print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da));
+#endif
+
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+ ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id &&
+ elems.mesh_config && mesh_matches_local(&elems, dev)) {
+ u64 rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
+
+ mesh_neighbour_update(mgmt->sa, rates, dev,
+ mesh_peer_accepts_plinks(&elems, dev));
+ }
+
+ rcu_read_lock();
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
+ memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
+ (sta = sta_info_get(local, mgmt->sa))) {
+ u64 prev_rates;
+ u64 supp_rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
+
+ prev_rates = sta->supp_rates[rx_status->band];
+ sta->supp_rates[rx_status->band] &= supp_rates;
+ if (sta->supp_rates[rx_status->band] == 0) {
+ /* No matching rates - this should not really happen.
+ * Make sure that at least one rate is marked
+ * supported to avoid issues with TX rate ctrl. */
+ sta->supp_rates[rx_status->band] =
+ sdata->u.sta.supp_rates_bits[rx_status->band];
+ }
+ if (sta->supp_rates[rx_status->band] != prev_rates) {
+ printk(KERN_DEBUG "%s: updated supp_rates set for "
+ "%s based on beacon info (0x%llx & 0x%llx -> "
+ "0x%llx)\n",
+ dev->name, print_mac(mac, sta->addr),
+ (unsigned long long) prev_rates,
+ (unsigned long long) supp_rates,
+ (unsigned long long) sta->supp_rates[rx_status->band]);
+ }
+ }
+
+ rcu_read_unlock();
+
+ if (elems.ds_params && elems.ds_params_len == 1)
+ freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
+ else
+ freq = rx_status->freq;
+
+ channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq,
+ elems.ssid, elems.ssid_len);
+ if (!bss) {
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config,
+ elems.mesh_config_len, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq,
+ elems.ssid, elems.ssid_len);
+ if (!bss)
+ return;
+ } else {
+#if 0
+ /* TODO: order by RSSI? */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_move_tail(&bss->list, &local->sta_bss_list);
+ spin_unlock_bh(&local->sta_bss_lock);
+#endif
+ }
+
+ bss->band = rx_status->band;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ bss->probe_resp && beacon) {
+ /* STA mode:
+ * Do not allow beacon to override data from Probe Response. */
+ ieee80211_rx_bss_put(dev, bss);
+ return;
+ }
+
+ /* save the ERP value so that it is available at association time */
+ if (elems.erp_info && elems.erp_info_len >= 1) {
+ bss->erp_value = elems.erp_info[0];
+ bss->has_erp_value = 1;
+ }
+
+ bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
+ bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
+
+ bss->supp_rates_len = 0;
+ if (elems.supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.supp_rates_len)
+ clen = elems.supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
+ clen);
+ bss->supp_rates_len += clen;
+ }
+ if (elems.ext_supp_rates) {
+ clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+ if (clen > elems.ext_supp_rates_len)
+ clen = elems.ext_supp_rates_len;
+ memcpy(&bss->supp_rates[bss->supp_rates_len],
+ elems.ext_supp_rates, clen);
+ bss->supp_rates_len += clen;
+ }
+
+ if (elems.wpa &&
+ (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
+ memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
+ if (bss->wpa_ie) {
+ memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
+ bss->wpa_ie_len = elems.wpa_len + 2;
+ } else
+ bss->wpa_ie_len = 0;
+ } else if (!elems.wpa && bss->wpa_ie) {
+ kfree(bss->wpa_ie);
+ bss->wpa_ie = NULL;
+ bss->wpa_ie_len = 0;
+ }
+
+ if (elems.rsn &&
+ (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
+ memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
+ if (bss->rsn_ie) {
+ memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
+ bss->rsn_ie_len = elems.rsn_len + 2;
+ } else
+ bss->rsn_ie_len = 0;
+ } else if (!elems.rsn && bss->rsn_ie) {
+ kfree(bss->rsn_ie);
+ bss->rsn_ie = NULL;
+ bss->rsn_ie_len = 0;
+ }
+
+ if (elems.wmm_param &&
+ (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
+ memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
+ if (bss->wmm_ie) {
+ memcpy(bss->wmm_ie, elems.wmm_param - 2,
+ elems.wmm_param_len + 2);
+ bss->wmm_ie_len = elems.wmm_param_len + 2;
+ } else
+ bss->wmm_ie_len = 0;
+ } else if (!elems.wmm_param && bss->wmm_ie) {
+ kfree(bss->wmm_ie);
+ bss->wmm_ie = NULL;
+ bss->wmm_ie_len = 0;
+ }
+ if (elems.ht_cap_elem &&
+ (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
+ memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
+ if (bss->ht_ie) {
+ memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
+ elems.ht_cap_elem_len + 2);
+ bss->ht_ie_len = elems.ht_cap_elem_len + 2;
+ } else
+ bss->ht_ie_len = 0;
+ } else if (!elems.ht_cap_elem && bss->ht_ie) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = NULL;
+ bss->ht_ie_len = 0;
+ }
+
+ bss->timestamp = beacon_timestamp;
+ bss->last_update = jiffies;
+ bss->rssi = rx_status->ssi;
+ bss->signal = rx_status->signal;
+ bss->noise = rx_status->noise;
+ if (!beacon)
+ bss->probe_resp++;
+
+ /* check if we need to merge IBSS */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
+ !local->sta_sw_scanning && !local->sta_hw_scanning &&
+ bss->capability & WLAN_CAPABILITY_IBSS &&
+ bss->freq == local->oper_channel->center_freq &&
+ elems.ssid_len == sdata->u.sta.ssid_len &&
+ memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) {
+ if (rx_status->flag & RX_FLAG_TSFT) {
+ /* in order for correct IBSS merging we need mactime
+ *
+ * since mactime is defined as the time the first data
+ * symbol of the frame hits the PHY, and the timestamp
+ * of the beacon is defined as "the time that the data
+ * symbol containing the first bit of the timestamp is
+ * transmitted to the PHY plus the transmitting STA’s
+ * delays through its local PHY from the MAC-PHY
+ * interface to its interface with the WM"
+ * (802.11 11.1.2) - equals the time this bit arrives at
+ * the receiver - we have to take into account the
+ * offset between the two.
+ * e.g: at 1 MBit that means mactime is 192 usec earlier
+ * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
+ */
+ int rate = local->hw.wiphy->bands[rx_status->band]->
+ bitrates[rx_status->rate_idx].bitrate;
+ rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate);
+ } else if (local && local->ops && local->ops->get_tsf)
+ /* second best option: get current TSF */
+ rx_timestamp = local->ops->get_tsf(local_to_hw(local));
+ else
+ /* can't merge without knowing the TSF */
+ rx_timestamp = -1LLU;
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "RX beacon SA=%s BSSID="
+ "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
+ print_mac(mac, mgmt->sa),
+ print_mac(mac2, mgmt->bssid),
+ (unsigned long long)rx_timestamp,
+ (unsigned long long)beacon_timestamp,
+ (unsigned long long)(rx_timestamp - beacon_timestamp),
+ jiffies);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ if (beacon_timestamp > rx_timestamp) {
+#ifndef CONFIG_MAC80211_IBSS_DEBUG
+ if (net_ratelimit())
+#endif
+ printk(KERN_DEBUG "%s: beacon TSF higher than "
+ "local TSF - IBSS merge with BSSID %s\n",
+ dev->name, print_mac(mac, mgmt->bssid));
+ ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss);
+ ieee80211_ibss_add_sta(dev, NULL,
+ mgmt->bssid, mgmt->sa);
+ }
+ }
+
+ ieee80211_rx_bss_put(dev, bss);
+}
+
+
+static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
+}
+
+
+static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ size_t baselen;
+ struct ieee802_11_elems elems;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_conf *conf = &local->hw.conf;
+ u32 changed = 0;
+
+ ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+ ifsta = &sdata->u.sta;
+
+ if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
+ memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ return;
+
+ /* Process beacon from the current BSS */
+ baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+
+ if (elems.erp_info && elems.erp_info_len >= 1)
+ changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
+
+ if (elems.ht_cap_elem && elems.ht_info_elem &&
+ elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+ struct ieee80211_ht_bss_info bss_info;
+
+ ieee80211_ht_addt_info_ie_to_ht_bss_info(
+ (struct ieee80211_ht_addt_info *)
+ elems.ht_info_elem, &bss_info);
+ changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
+ &bss_info);
+ }
+
+ if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ }
+
+ ieee80211_bss_info_change_notify(sdata, changed);
+}
+
+
+static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int tx_last_beacon;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *resp;
+ u8 *pos, *end;
+ DECLARE_MAC_BUF(mac);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ DECLARE_MAC_BUF(mac2);
+ DECLARE_MAC_BUF(mac3);
+#endif
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS ||
+ ifsta->state != IEEE80211_IBSS_JOINED ||
+ len < 24 + 2 || !ifsta->probe_resp)
+ return;
+
+ if (local->ops->tx_last_beacon)
+ tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
+ else
+ tx_last_beacon = 1;
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
+ "%s (tx_last_beacon=%d)\n",
+ dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
+ print_mac(mac3, mgmt->bssid), tx_last_beacon);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+ if (!tx_last_beacon)
+ return;
+
+ if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
+ memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
+ return;
+
+ end = ((u8 *) mgmt) + len;
+ pos = mgmt->u.probe_req.variable;
+ if (pos[0] != WLAN_EID_SSID ||
+ pos + 2 + pos[1] > end) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
+ "from %s\n",
+ dev->name, print_mac(mac, mgmt->sa));
+ }
+ return;
+ }
+ if (pos[1] != 0 &&
+ (pos[1] != ifsta->ssid_len ||
+ memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
+ /* Ignore ProbeReq for foreign SSID */
+ return;
+ }
+
+ /* Reply with ProbeResp */
+ skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
+ if (!skb)
+ return;
+
+ resp = (struct ieee80211_mgmt *) skb->data;
+ memcpy(resp->da, mgmt->sa, ETH_ALEN);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
+ dev->name, print_mac(mac, resp->da));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
+static void ieee80211_rx_mgmt_action(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (len < IEEE80211_MIN_ACTION_SIZE)
+ return;
+
+ switch (mgmt->u.action.category) {
+ case WLAN_CATEGORY_BACK:
+ switch (mgmt->u.action.u.addba_req.action_code) {
+ case WLAN_ACTION_ADDBA_REQ:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.addba_req)))
+ break;
+ ieee80211_sta_process_addba_request(dev, mgmt, len);
+ break;
+ case WLAN_ACTION_ADDBA_RESP:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.addba_resp)))
+ break;
+ ieee80211_sta_process_addba_resp(dev, mgmt, len);
+ break;
+ case WLAN_ACTION_DELBA:
+ if (len < (IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.delba)))
+ break;
+ ieee80211_sta_process_delba(dev, mgmt, len);
+ break;
+ default:
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n",
+ dev->name);
+ break;
+ }
+ break;
+ case PLINK_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_plink_frame(dev, mgmt, len, rx_status);
+ break;
+ case MESH_PATH_SEL_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_path_sel_frame(dev, mgmt, len);
+ break;
+ default:
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: Rx unknown action frame - "
+ "category=%d\n", dev->name, mgmt->u.action.category);
+ break;
+ }
+}
+
+void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 24)
+ goto fail;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ case IEEE80211_STYPE_PROBE_RESP:
+ case IEEE80211_STYPE_BEACON:
+ case IEEE80211_STYPE_ACTION:
+ memcpy(skb->cb, rx_status, sizeof(*rx_status));
+ case IEEE80211_STYPE_AUTH:
+ case IEEE80211_STYPE_ASSOC_RESP:
+ case IEEE80211_STYPE_REASSOC_RESP:
+ case IEEE80211_STYPE_DEAUTH:
+ case IEEE80211_STYPE_DISASSOC:
+ skb_queue_tail(&ifsta->skb_queue, skb);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ return;
+ default:
+ printk(KERN_DEBUG "%s: received unknown management frame - "
+ "stype=%d\n", dev->name,
+ (fc & IEEE80211_FCTL_STYPE) >> 4);
+ break;
+ }
+
+ fail:
+ kfree_skb(skb);
+}
+
+
+static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ rx_status = (struct ieee80211_rx_status *) skb->cb;
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
+ rx_status);
+ break;
+ case IEEE80211_STYPE_PROBE_RESP:
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
+ break;
+ case IEEE80211_STYPE_BEACON:
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
+ break;
+ case IEEE80211_STYPE_AUTH:
+ ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0);
+ break;
+ case IEEE80211_STYPE_REASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1);
+ break;
+ case IEEE80211_STYPE_DEAUTH:
+ ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_DISASSOC:
+ ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ACTION:
+ ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status);
+ break;
+ }
+
+ kfree_skb(skb);
+}
+
+
+ieee80211_rx_result
+ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
+
+ if (skb->len < 2)
+ return RX_DROP_UNUSABLE;
+
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL)
+ return RX_CONTINUE;
+
+ if (skb->len < 24)
+ return RX_DROP_MONITOR;
+
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+ if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
+ ieee80211_rx_mgmt_probe_resp(dev, mgmt,
+ skb->len, rx_status);
+ dev_kfree_skb(skb);
+ return RX_QUEUED;
+ } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
+ ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
+ rx_status);
+ dev_kfree_skb(skb);
+ return RX_QUEUED;
+ }
+ }
+ return RX_CONTINUE;
+}
+
+
+static int ieee80211_sta_active_ibss(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int active = 0;
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sta->sdata == sdata &&
+ time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
+ jiffies)) {
+ active++;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+
+ return active;
+}
+
+
+static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta, *tmp;
+ LIST_HEAD(tmp_list);
+ DECLARE_MAC_BUF(mac);
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->sta_lock, flags);
+ list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
+ if (time_after(jiffies, sta->last_rx + exp_time)) {
+ printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
+ dev->name, print_mac(mac, sta->addr));
+ __sta_info_unlink(&sta);
+ if (sta)
+ list_add(&sta->list, &tmp_list);
+ }
+ spin_unlock_irqrestore(&local->sta_lock, flags);
+
+ list_for_each_entry_safe(sta, tmp, &tmp_list, list)
+ sta_info_destroy(sta);
+}
+
+
+static void ieee80211_sta_merge_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT);
+ if (ieee80211_sta_active_ibss(dev))
+ return;
+
+ printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
+ "IBSS networks with same SSID (merge)\n", dev->name);
+ ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
+}
+
+
+#ifdef CONFIG_MAC80211_MESH
+static void ieee80211_mesh_housekeeping(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ bool free_plinks;
+
+ ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
+ mesh_path_expire(dev);
+
+ free_plinks = mesh_plink_availables(sdata);
+ if (free_plinks != sdata->u.sta.accepting_plinks)
+ ieee80211_if_config_beacon(dev);
+
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
+}
+
+
+void ieee80211_start_mesh(struct net_device *dev)
+{
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+ ifsta->state = IEEE80211_MESH_UP;
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+#endif
+
+
+void ieee80211_sta_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(&sdata->wdev);
+
+ set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+}
+
+void ieee80211_sta_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, u.sta.work);
+ struct net_device *dev = sdata->dev;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_sta *ifsta;
+ struct sk_buff *skb;
+
+ if (!netif_running(dev))
+ return;
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) {
+ printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
+ "(type=%d)\n", dev->name, sdata->vif.type);
+ return;
+ }
+ ifsta = &sdata->u.sta;
+
+ while ((skb = skb_dequeue(&ifsta->skb_queue)))
+ ieee80211_sta_rx_queued_mgmt(dev, skb);
+
+#ifdef CONFIG_MAC80211_MESH
+ if (ifsta->preq_queue_len &&
+ time_after(jiffies,
+ ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
+ mesh_path_start_discovery(dev);
+#endif
+
+ if (ifsta->state != IEEE80211_AUTHENTICATE &&
+ ifsta->state != IEEE80211_ASSOCIATE &&
+ test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
+ if (ifsta->scan_ssid_len)
+ ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
+ else
+ ieee80211_sta_start_scan(dev, NULL, 0);
+ return;
+ }
+
+ if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
+ if (ieee80211_sta_config_auth(dev, ifsta))
+ return;
+ clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
+ } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
+ return;
+
+ switch (ifsta->state) {
+ case IEEE80211_DISABLED:
+ break;
+ case IEEE80211_AUTHENTICATE:
+ ieee80211_authenticate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATE:
+ ieee80211_associate(dev, ifsta);
+ break;
+ case IEEE80211_ASSOCIATED:
+ ieee80211_associated(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_SEARCH:
+ ieee80211_sta_find_ibss(dev, ifsta);
+ break;
+ case IEEE80211_IBSS_JOINED:
+ ieee80211_sta_merge_ibss(dev, ifsta);
+ break;
+#ifdef CONFIG_MAC80211_MESH
+ case IEEE80211_MESH_UP:
+ ieee80211_mesh_housekeeping(dev, ifsta);
+ break;
+#endif
+ default:
+ printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
+ ifsta->state);
+ break;
+ }
+
+ if (ieee80211_privacy_mismatch(dev, ifsta)) {
+ printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+ "mixed-cell disabled - disassociate\n", dev->name);
+
+ ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
+ ieee80211_set_disassoc(dev, ifsta, 0);
+ }
+}
+
+
+static void ieee80211_sta_reset_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (local->ops->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->ops->reset_tsf(local_to_hw(local));
+ }
+
+ ifsta->wmm_last_param_set = -1; /* allow any WMM update */
+
+
+ if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
+ else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ ifsta->auth_alg = WLAN_AUTH_LEAP;
+ else
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
+ ifsta->auth_alg);
+ ifsta->auth_transaction = -1;
+ ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
+ ifsta->auth_tries = ifsta->assoc_tries = 0;
+ netif_carrier_off(dev);
+}
+
+
+void ieee80211_sta_req_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return;
+
+ if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
+ IEEE80211_STA_AUTO_BSSID_SEL)) &&
+ (ifsta->flags & (IEEE80211_STA_SSID_SET |
+ IEEE80211_STA_AUTO_SSID_SEL))) {
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ }
+}
+
+static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
+ const char *ssid, int ssid_len)
+{
+ int tmp, hidden_ssid;
+
+ if (ssid_len == ifsta->ssid_len &&
+ !memcmp(ifsta->ssid, ssid, ssid_len))
+ return 1;
+
+ if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
+ return 0;
+
+ hidden_ssid = 1;
+ tmp = ssid_len;
+ while (tmp--) {
+ if (ssid[tmp] != '\0') {
+ hidden_ssid = 0;
+ break;
+ }
+ }
+
+ if (hidden_ssid && ifsta->ssid_len == ssid_len)
+ return 1;
+
+ if (ssid_len == 1 && ssid[0] == ' ')
+ return 1;
+
+ return 0;
+}
+
+static int ieee80211_sta_config_auth(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_sta_bss *bss, *selected = NULL;
+ int top_rssi = 0, freq;
+
+ if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
+ IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) {
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ ieee80211_sta_reset_auth(dev, ifsta);
+ return 0;
+ }
+
+ spin_lock_bh(&local->sta_bss_lock);
+ freq = local->oper_channel->center_freq;
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (!(bss->capability & WLAN_CAPABILITY_ESS))
+ continue;
+
+ if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
+ !!sdata->default_key)
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
+ bss->freq != freq)
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
+ memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
+ continue;
+
+ if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
+ !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
+ continue;
+
+ if (!selected || top_rssi < bss->rssi) {
+ selected = bss;
+ top_rssi = bss->rssi;
+ }
+ }
+ if (selected)
+ atomic_inc(&selected->users);
+ spin_unlock_bh(&local->sta_bss_lock);
+
+ if (selected) {
+ ieee80211_set_freq(local, selected->freq);
+ if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
+ ieee80211_sta_set_ssid(dev, selected->ssid,
+ selected->ssid_len);
+ ieee80211_sta_set_bssid(dev, selected->bssid);
+ ieee80211_sta_def_wmm_params(dev, selected, 0);
+ ieee80211_rx_bss_put(dev, selected);
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ ieee80211_sta_reset_auth(dev, ifsta);
+ return 0;
+ } else {
+ if (ifsta->state != IEEE80211_AUTHENTICATE) {
+ if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
+ ieee80211_sta_start_scan(dev, NULL, 0);
+ else
+ ieee80211_sta_start_scan(dev, ifsta->ssid,
+ ifsta->ssid_len);
+ ifsta->state = IEEE80211_AUTHENTICATE;
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
+ } else
+ ifsta->state = IEEE80211_DISABLED;
+ }
+ return -1;
+}
+
+
+static int ieee80211_sta_create_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_supported_band *sband;
+ u8 bssid[ETH_ALEN], *pos;
+ int i;
+ DECLARE_MAC_BUF(mac);
+
+#if 0
+ /* Easier testing, use fixed BSSID. */
+ memset(bssid, 0xfe, ETH_ALEN);
+#else
+ /* Generate random, not broadcast, locally administered BSSID. Mix in
+ * own MAC address to make sure that devices that do not have proper
+ * random number generator get different BSSID. */
+ get_random_bytes(bssid, ETH_ALEN);
+ for (i = 0; i < ETH_ALEN; i++)
+ bssid[i] ^= dev->dev_addr[i];
+ bssid[0] &= ~0x01;
+ bssid[0] |= 0x02;
+#endif
+
+ printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
+ dev->name, print_mac(mac, bssid));
+
+ bss = ieee80211_rx_bss_add(dev, bssid,
+ local->hw.conf.channel->center_freq,
+ sdata->u.sta.ssid, sdata->u.sta.ssid_len);
+ if (!bss)
+ return -ENOMEM;
+
+ bss->band = local->hw.conf.channel->band;
+ sband = local->hw.wiphy->bands[bss->band];
+
+ if (local->hw.conf.beacon_int == 0)
+ local->hw.conf.beacon_int = 10000;
+ bss->beacon_int = local->hw.conf.beacon_int;
+ bss->last_update = jiffies;
+ bss->capability = WLAN_CAPABILITY_IBSS;
+ if (sdata->default_key) {
+ bss->capability |= WLAN_CAPABILITY_PRIVACY;
+ } else
+ sdata->drop_unencrypted = 0;
+ bss->supp_rates_len = sband->n_bitrates;
+ pos = bss->supp_rates;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ return ieee80211_sta_join_ibss(dev, ifsta, bss);
+}
+
+
+static int ieee80211_sta_find_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sta_bss *bss;
+ int found = 0;
+ u8 bssid[ETH_ALEN];
+ int active_ibss;
+ DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mac2);
+
+ if (ifsta->ssid_len == 0)
+ return -EINVAL;
+
+ active_ibss = ieee80211_sta_active_ibss(dev);
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
+ dev->name, active_ibss);
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (ifsta->ssid_len != bss->ssid_len ||
+ memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
+ || !(bss->capability & WLAN_CAPABILITY_IBSS))
+ continue;
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG " bssid=%s found\n",
+ print_mac(mac, bss->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ memcpy(bssid, bss->bssid, ETH_ALEN);
+ found = 1;
+ if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
+ break;
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG " sta_find_ibss: selected %s current "
+ "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
+ (bss = ieee80211_rx_bss_get(dev, bssid,
+ local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len))) {
+ printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
+ " based on configured SSID\n",
+ dev->name, print_mac(mac, bssid));
+ return ieee80211_sta_join_ibss(dev, ifsta, bss);
+ }
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ printk(KERN_DEBUG " did not try to join ibss\n");
+#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+
+ /* Selected IBSS not found in current scan results - try to scan */
+ if (ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)) {
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_IBSS_MERGE_INTERVAL);
+ } else if (time_after(jiffies, local->last_scan_completed +
+ IEEE80211_SCAN_INTERVAL)) {
+ printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
+ "join\n", dev->name);
+ return ieee80211_sta_req_scan(dev, ifsta->ssid,
+ ifsta->ssid_len);
+ } else if (ifsta->state != IEEE80211_IBSS_JOINED) {
+ int interval = IEEE80211_SCAN_INTERVAL;
+
+ if (time_after(jiffies, ifsta->ibss_join_req +
+ IEEE80211_IBSS_JOIN_TIMEOUT)) {
+ if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
+ (!(local->oper_channel->flags &
+ IEEE80211_CHAN_NO_IBSS)))
+ return ieee80211_sta_create_ibss(dev, ifsta);
+ if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on"
+ " %d MHz\n", dev->name,
+ local->hw.conf.channel->center_freq);
+ }
+
+ /* No IBSS found - decrease scan interval and continue
+ * scanning. */
+ interval = IEEE80211_SCAN_INTERVAL_SLOW;
+ }
+
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ mod_timer(&ifsta->timer, jiffies + interval);
+ return 0;
+ }
+
+ return 0;
+}
+
+
+int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta;
+
+ if (len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ ifsta = &sdata->u.sta;
+
+ if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
+ ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ memcpy(ifsta->ssid, ssid, len);
+ memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
+ ifsta->ssid_len = len;
+
+ if (len)
+ ifsta->flags |= IEEE80211_STA_SSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_SSID_SET;
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
+ ifsta->ibss_join_req = jiffies;
+ ifsta->state = IEEE80211_IBSS_SEARCH;
+ return ieee80211_sta_find_ibss(dev, ifsta);
+ }
+ return 0;
+}
+
+
+int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
+ *len = ifsta->ssid_len;
+ return 0;
+}
+
+
+int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_sta *ifsta;
+ int res;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+
+ if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+ memcpy(ifsta->bssid, bssid, ETH_ALEN);
+ res = ieee80211_if_config(dev);
+ if (res) {
+ printk(KERN_DEBUG "%s: Failed to config new BSSID to "
+ "the low-level driver\n", dev->name);
+ return res;
+ }
+ }
+
+ if (is_valid_ether_addr(bssid))
+ ifsta->flags |= IEEE80211_STA_BSSID_SET;
+ else
+ ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
+
+ return 0;
+}
+
+
+static void ieee80211_send_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ int powersave)
+{
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ u16 fc;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
+ "frame\n", sdata->dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(nullfunc, 0, 24);
+ fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS;
+ if (powersave)
+ fc |= IEEE80211_FCTL_PM;
+ nullfunc->frame_control = cpu_to_le16(fc);
+ memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
+
+ ieee80211_sta_tx(sdata->dev, skb, 0);
+}
+
+
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+
+void ieee80211_scan_completed(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct net_device *dev = local->scan_dev;
+ struct ieee80211_sub_if_data *sdata;
+ union iwreq_data wrqu;
+
+ local->last_scan_completed = jiffies;
+ memset(&wrqu, 0, sizeof(wrqu));
+ wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
+
+ if (local->sta_hw_scanning) {
+ local->sta_hw_scanning = 0;
+ if (ieee80211_hw_config(local))
+ printk(KERN_DEBUG "%s: failed to restore operational "
+ "channel after scan\n", dev->name);
+ /* Restart STA timer for HW scan case */
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ ieee80211_restart_sta_timer(sdata);
+ rcu_read_unlock();
+
+ goto done;
+ }
+
+ local->sta_sw_scanning = 0;
+ if (ieee80211_hw_config(local))
+ printk(KERN_DEBUG "%s: failed to restore operational "
+ "channel after scan\n", dev->name);
+
+
+ netif_tx_lock_bh(local->mdev);
+ local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
+ local->ops->configure_filter(local_to_hw(local),
+ FIF_BCN_PRBRESP_PROMISC,
+ &local->filter_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+
+ netif_tx_unlock_bh(local->mdev);
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ /* No need to wake the master device. */
+ if (sdata->dev == local->mdev)
+ continue;
+
+ /* Tell AP we're back */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
+ ieee80211_send_nullfunc(local, sdata, 0);
+
+ ieee80211_restart_sta_timer(sdata);
+
+ netif_wake_queue(sdata->dev);
+ }
+ rcu_read_unlock();
+
+done:
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
+ (!ifsta->state == IEEE80211_IBSS_JOINED &&
+ !ieee80211_sta_active_ibss(dev)))
+ ieee80211_sta_find_ibss(dev, ifsta);
+ }
+}
+EXPORT_SYMBOL(ieee80211_scan_completed);
+
+void ieee80211_sta_scan_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local, scan_work.work);
+ struct net_device *dev = local->scan_dev;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_channel *chan;
+ int skip;
+ unsigned long next_delay = 0;
+
+ if (!local->sta_sw_scanning)
+ return;
+
+ switch (local->scan_state) {
+ case SCAN_SET_CHANNEL:
+ /*
+ * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
+ * after we successfully scanned the last channel of the last
+ * band (and the last band is supported by the hw)
+ */
+ if (local->scan_band < IEEE80211_NUM_BANDS)
+ sband = local->hw.wiphy->bands[local->scan_band];
+ else
+ sband = NULL;
+
+ /*
+ * If we are at an unsupported band and have more bands
+ * left to scan, advance to the next supported one.
+ */
+ while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
+ local->scan_band++;
+ sband = local->hw.wiphy->bands[local->scan_band];
+ local->scan_channel_idx = 0;
+ }
+
+ /* if no more bands/channels left, complete scan */
+ if (!sband || local->scan_channel_idx >= sband->n_channels) {
+ ieee80211_scan_completed(local_to_hw(local));
+ return;
+ }
+ skip = 0;
+ chan = &sband->channels[local->scan_channel_idx];
+
+ if (chan->flags & IEEE80211_CHAN_DISABLED ||
+ (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+ chan->flags & IEEE80211_CHAN_NO_IBSS))
+ skip = 1;
+
+ if (!skip) {
+ local->scan_channel = chan;
+ if (ieee80211_hw_config(local)) {
+ printk(KERN_DEBUG "%s: failed to set freq to "
+ "%d MHz for scan\n", dev->name,
+ chan->center_freq);
+ skip = 1;
+ }
+ }
+
+ /* advance state machine to next channel/band */
+ local->scan_channel_idx++;
+ if (local->scan_channel_idx >= sband->n_channels) {
+ /*
+ * scan_band may end up == IEEE80211_NUM_BANDS, but
+ * we'll catch that case above and complete the scan
+ * if that is the case.
+ */
+ local->scan_band++;
+ local->scan_channel_idx = 0;
+ }
+
+ if (skip)
+ break;
+
+ next_delay = IEEE80211_PROBE_DELAY +
+ usecs_to_jiffies(local->hw.channel_change_time);
+ local->scan_state = SCAN_SEND_PROBE;
+ break;
+ case SCAN_SEND_PROBE:
+ next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+ local->scan_state = SCAN_SET_CHANNEL;
+
+ if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ break;
+ ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+ local->scan_ssid_len);
+ next_delay = IEEE80211_CHANNEL_TIME;
+ break;
+ }
+
+ if (local->sta_sw_scanning)
+ queue_delayed_work(local->hw.workqueue, &local->scan_work,
+ next_delay);
+}
+
+
+static int ieee80211_sta_start_scan(struct net_device *dev,
+ u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+
+ if (ssid_len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+
+ /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
+ * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
+ * BSSID: MACAddress
+ * SSID
+ * ScanType: ACTIVE, PASSIVE
+ * ProbeDelay: delay (in microseconds) to be used prior to transmitting
+ * a Probe frame during active scanning
+ * ChannelList
+ * MinChannelTime (>= ProbeDelay), in TU
+ * MaxChannelTime: (>= MinChannelTime), in TU
+ */
+
+ /* MLME-SCAN.confirm
+ * BSSDescriptionSet
+ * ResultCode: SUCCESS, INVALID_PARAMETERS
+ */
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning) {
+ if (local->scan_dev == dev)
+ return 0;
+ return -EBUSY;
+ }
+
+ if (local->ops->hw_scan) {
+ int rc = local->ops->hw_scan(local_to_hw(local),
+ ssid, ssid_len);
+ if (!rc) {
+ local->sta_hw_scanning = 1;
+ local->scan_dev = dev;
+ }
+ return rc;
+ }
+
+ local->sta_sw_scanning = 1;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ /* Don't stop the master interface, otherwise we can't transmit
+ * probes! */
+ if (sdata->dev == local->mdev)
+ continue;
+
+ netif_stop_queue(sdata->dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
+ ieee80211_send_nullfunc(local, sdata, 1);
+ }
+ rcu_read_unlock();
+
+ if (ssid) {
+ local->scan_ssid_len = ssid_len;
+ memcpy(local->scan_ssid, ssid, ssid_len);
+ } else
+ local->scan_ssid_len = 0;
+ local->scan_state = SCAN_SET_CHANNEL;
+ local->scan_channel_idx = 0;
+ local->scan_band = IEEE80211_BAND_2GHZ;
+ local->scan_dev = dev;
+
+ netif_tx_lock_bh(local->mdev);
+ local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
+ local->ops->configure_filter(local_to_hw(local),
+ FIF_BCN_PRBRESP_PROMISC,
+ &local->filter_flags,
+ local->mdev->mc_count,
+ local->mdev->mc_list);
+ netif_tx_unlock_bh(local->mdev);
+
+ /* TODO: start scan as soon as all nullfunc frames are ACKed */
+ queue_delayed_work(local->hw.workqueue, &local->scan_work,
+ IEEE80211_CHANNEL_TIME);
+
+ return 0;
+}
+
+
+int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return ieee80211_sta_start_scan(dev, ssid, ssid_len);
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning) {
+ if (local->scan_dev == dev)
+ return 0;
+ return -EBUSY;
+ }
+
+ ifsta->scan_ssid_len = ssid_len;
+ if (ssid_len)
+ memcpy(ifsta->scan_ssid, ssid, ssid_len);
+ set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
+ queue_work(local->hw.workqueue, &ifsta->work);
+ return 0;
+}
+
+static char *
+ieee80211_sta_scan_result(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ char *current_ev, char *end_buf)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_event iwe;
+
+ if (time_after(jiffies,
+ bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
+ return current_ev;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_ADDR_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWESSID;
+ if (bss_mesh_cfg(bss)) {
+ iwe.u.data.length = bss_mesh_id_len(bss);
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss_mesh_id(bss));
+ } else {
+ iwe.u.data.length = bss->ssid_len;
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->ssid);
+ }
+
+ if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+ || bss_mesh_cfg(bss)) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWMODE;
+ if (bss_mesh_cfg(bss))
+ iwe.u.mode = IW_MODE_MESH;
+ else if (bss->capability & WLAN_CAPABILITY_ESS)
+ iwe.u.mode = IW_MODE_MASTER;
+ else
+ iwe.u.mode = IW_MODE_ADHOC;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_UINT_LEN);
+ }
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = bss->freq;
+ iwe.u.freq.e = 6;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
+ iwe.u.freq.e = 0;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_FREQ_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVQUAL;
+ iwe.u.qual.qual = bss->signal;
+ iwe.u.qual.level = bss->rssi;
+ iwe.u.qual.noise = bss->noise;
+ iwe.u.qual.updated = local->wstats_flags;
+ current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+ IW_EV_QUAL_LEN);
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWENCODE;
+ if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
+
+ if (bss && bss->wpa_ie) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->wpa_ie_len;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->wpa_ie);
+ }
+
+ if (bss && bss->rsn_ie) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVGENIE;
+ iwe.u.data.length = bss->rsn_ie_len;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->rsn_ie);
+ }
+
+ if (bss && bss->supp_rates_len > 0) {
+ /* display all supported rates in readable format */
+ char *p = current_ev + IW_EV_LCP_LEN;
+ int i;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWRATE;
+ /* Those two flags are ignored... */
+ iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ iwe.u.bitrate.value = ((bss->supp_rates[i] &
+ 0x7f) * 500000);
+ p = iwe_stream_add_value(current_ev, p,
+ end_buf, &iwe, IW_EV_PARAM_LEN);
+ }
+ current_ev = p;
+ }
+
+ if (bss) {
+ char *buf;
+ buf = kmalloc(30, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ if (bss_mesh_cfg(bss)) {
+ char *buf;
+ u8 *cfg = bss_mesh_cfg(bss);
+ buf = kmalloc(50, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "Mesh network (version %d)", cfg[0]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Protocol ID: "
+ "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+ cfg[4]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Metric ID: "
+ "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+ cfg[8]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Congestion Control Mode ID: "
+ "0x%02X%02X%02X%02X", cfg[9], cfg[10],
+ cfg[11], cfg[12]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Channel Precedence: "
+ "0x%02X%02X%02X%02X", cfg[13], cfg[14],
+ cfg[15], cfg[16]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
+ return current_ev;
+}
+
+
+int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ char *current_ev = buf;
+ char *end_buf = buf + len;
+ struct ieee80211_sta_bss *bss;
+
+ spin_lock_bh(&local->sta_bss_lock);
+ list_for_each_entry(bss, &local->sta_bss_list, list) {
+ if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
+ spin_unlock_bh(&local->sta_bss_lock);
+ return -E2BIG;
+ }
+ current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
+ end_buf);
+ }
+ spin_unlock_bh(&local->sta_bss_lock);
+ return current_ev - buf;
+}
+
+
+int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ kfree(ifsta->extra_ie);
+ if (len == 0) {
+ ifsta->extra_ie = NULL;
+ ifsta->extra_ie_len = 0;
+ return 0;
+ }
+ ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
+ if (!ifsta->extra_ie) {
+ ifsta->extra_ie_len = 0;
+ return -ENOMEM;
+ }
+ memcpy(ifsta->extra_ie, ie, len);
+ ifsta->extra_ie_len = len;
+ return 0;
+}
+
+
+struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
+ struct sk_buff *skb, u8 *bssid,
+ u8 *addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ DECLARE_MAC_BUF(mac);
+
+ /* TODO: Could consider removing the least recently used entry and
+ * allow new one to be added. */
+ if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: No room for a new IBSS STA "
+ "entry %s\n", dev->name, print_mac(mac, addr));
+ }
+ return NULL;
+ }
+
+ printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
+ wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
+
+ sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
+ if (!sta)
+ return NULL;
+
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ sta->supp_rates[local->hw.conf.channel->band] =
+ sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
+
+ rate_control_rate_init(sta, local);
+
+ if (sta_info_insert(sta))
+ return NULL;
+
+ return sta;
+}
+
+
+int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ return -EINVAL;
+
+ ieee80211_send_deauth(dev, ifsta, reason);
+ ieee80211_set_disassoc(dev, ifsta, 1);
+ return 0;
+}
+
+
+int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
+ dev->name, reason);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return -EINVAL;
+
+ if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
+ return -1;
+
+ ieee80211_send_disassoc(dev, ifsta, reason);
+ ieee80211_set_disassoc(dev, ifsta, 0);
+ return 0;
+}
+
+void ieee80211_notify_mac(struct ieee80211_hw *hw,
+ enum ieee80211_notification_types notif_type)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata;
+
+ switch (notif_type) {
+ case IEEE80211_NOTIFY_RE_ASSOC:
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
+ ieee80211_sta_req_auth(sdata->dev,
+ &sdata->u.sta);
+ }
+
+ }
+ rcu_read_unlock();
+ break;
+ }
+}
+EXPORT_SYMBOL(ieee80211_notify_mac);
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/rtnetlink.h>
+#include "rate.h"
+#include "ieee80211_i.h"
+
+struct rate_control_alg {
+ struct list_head list;
+ struct rate_control_ops *ops;
+};
+
+static LIST_HEAD(rate_ctrl_algs);
+static DEFINE_MUTEX(rate_ctrl_mutex);
+
+static char *ieee80211_default_rc_algo = CONFIG_MAC80211_RC_DEFAULT;
+module_param(ieee80211_default_rc_algo, charp, 0644);
+MODULE_PARM_DESC(ieee80211_default_rc_algo,
+ "Default rate control algorithm for mac80211 to use");
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops)
+{
+ struct rate_control_alg *alg;
+
+ if (!ops->name)
+ return -EINVAL;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (!strcmp(alg->ops->name, ops->name)) {
+ /* don't register an algorithm twice */
+ WARN_ON(1);
+ mutex_unlock(&rate_ctrl_mutex);
+ return -EALREADY;
+ }
+ }
+
+ alg = kzalloc(sizeof(*alg), GFP_KERNEL);
+ if (alg == NULL) {
+ mutex_unlock(&rate_ctrl_mutex);
+ return -ENOMEM;
+ }
+ alg->ops = ops;
+
+ list_add_tail(&alg->list, &rate_ctrl_algs);
+ mutex_unlock(&rate_ctrl_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL(ieee80211_rate_control_register);
+
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
+{
+ struct rate_control_alg *alg;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (alg->ops == ops) {
+ list_del(&alg->list);
+ kfree(alg);
+ break;
+ }
+ }
+ mutex_unlock(&rate_ctrl_mutex);
+}
+EXPORT_SYMBOL(ieee80211_rate_control_unregister);
+
+static struct rate_control_ops *
+ieee80211_try_rate_control_ops_get(const char *name)
+{
+ struct rate_control_alg *alg;
+ struct rate_control_ops *ops = NULL;
+
+ if (!name)
+ return NULL;
+
+ mutex_lock(&rate_ctrl_mutex);
+ list_for_each_entry(alg, &rate_ctrl_algs, list) {
+ if (!strcmp(alg->ops->name, name))
+ if (try_module_get(alg->ops->module)) {
+ ops = alg->ops;
+ break;
+ }
+ }
+ mutex_unlock(&rate_ctrl_mutex);
+ return ops;
+}
+
+/* Get the rate control algorithm. */
+static struct rate_control_ops *
+ieee80211_rate_control_ops_get(const char *name)
+{
+ struct rate_control_ops *ops;
+ const char *alg_name;
+
+ if (!name)
+ alg_name = ieee80211_default_rc_algo;
+ else
+ alg_name = name;
+
+ ops = ieee80211_try_rate_control_ops_get(alg_name);
+ if (!ops) {
+ request_module("rc80211_%s", alg_name);
+ ops = ieee80211_try_rate_control_ops_get(alg_name);
+ }
+ if (!ops && name)
+ /* try default if specific alg requested but not found */
+ ops = ieee80211_try_rate_control_ops_get(ieee80211_default_rc_algo);
+
+ /* try built-in one if specific alg requested but not found */
+ if (!ops && strlen(CONFIG_MAC80211_RC_DEFAULT))
+ ops = ieee80211_try_rate_control_ops_get(CONFIG_MAC80211_RC_DEFAULT);
+
+ return ops;
+}
+
+static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
+{
+ module_put(ops->module);
+}
+
+struct rate_control_ref *rate_control_alloc(const char *name,
+ struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref;
+
+ ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
+ if (!ref)
+ goto fail_ref;
+ kref_init(&ref->kref);
+ ref->ops = ieee80211_rate_control_ops_get(name);
+ if (!ref->ops)
+ goto fail_ops;
+ ref->priv = ref->ops->alloc(local);
+ if (!ref->priv)
+ goto fail_priv;
+ return ref;
+
+fail_priv:
+ ieee80211_rate_control_ops_put(ref->ops);
+fail_ops:
+ kfree(ref);
+fail_ref:
+ return NULL;
+}
+
+static void rate_control_release(struct kref *kref)
+{
+ struct rate_control_ref *ctrl_ref;
+
+ ctrl_ref = container_of(kref, struct rate_control_ref, kref);
+ ctrl_ref->ops->free(ctrl_ref->priv);
+ ieee80211_rate_control_ops_put(ctrl_ref->ops);
+ kfree(ctrl_ref);
+}
+
+void rate_control_get_rate(struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct rate_control_ref *ref = local->rate_ctrl;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta;
+ int i;
+
+ rcu_read_lock();
+ sta = sta_info_get(local, hdr->addr1);
+
+ memset(sel, 0, sizeof(struct rate_selection));
+
+ ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
+
+ /* Select a non-ERP backup rate. */
+ if (!sel->nonerp) {
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *rate = &sband->bitrates[i];
+ if (sel->rate->bitrate < rate->bitrate)
+ break;
+
+ if (rate_supported(sta, sband->band, i) &&
+ !(rate->flags & IEEE80211_RATE_ERP_G))
+ sel->nonerp = rate;
+ }
+ }
+
+ rcu_read_unlock();
+}
+
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
+{
+ kref_get(&ref->kref);
+ return ref;
+}
+
+void rate_control_put(struct rate_control_ref *ref)
+{
+ kref_put(&ref->kref, rate_control_release);
+}
+
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+ const char *name)
+{
+ struct rate_control_ref *ref, *old;
+
+ ASSERT_RTNL();
+ if (local->open_count || netif_running(local->mdev))
+ return -EBUSY;
+
+ ref = rate_control_alloc(name, local);
+ if (!ref) {
+ printk(KERN_WARNING "%s: Failed to select rate control "
+ "algorithm\n", wiphy_name(local->hw.wiphy));
+ return -ENOENT;
+ }
+
+ old = local->rate_ctrl;
+ local->rate_ctrl = ref;
+ if (old) {
+ rate_control_put(old);
+ sta_info_flush(local, NULL);
+ }
+
+ printk(KERN_DEBUG "%s: Selected rate control "
+ "algorithm '%s'\n", wiphy_name(local->hw.wiphy),
+ ref->ops->name);
+
+
+ return 0;
+}
+
+void rate_control_deinitialize(struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref;
+
+ ref = local->rate_ctrl;
+ local->rate_ctrl = NULL;
+ rate_control_put(ref);
+}
+
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef IEEE80211_RATE_H
+#define IEEE80211_RATE_H
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/kref.h>
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+/* TODO: kdoc */
+struct rate_selection {
+ /* Selected transmission rate */
+ struct ieee80211_rate *rate;
+ /* Non-ERP rate to use if mac80211 decides it cannot use an ERP rate */
+ struct ieee80211_rate *nonerp;
+ /* probe with this rate, or NULL for no probing */
+ struct ieee80211_rate *probe;
+};
+
+struct rate_control_ops {
+ struct module *module;
+ const char *name;
+ void (*tx_status)(void *priv, struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status);
+ void (*get_rate)(void *priv, struct net_device *dev,
+ struct ieee80211_supported_band *band,
+ struct sk_buff *skb,
+ struct rate_selection *sel);
+ void (*rate_init)(void *priv, void *priv_sta,
+ struct ieee80211_local *local, struct sta_info *sta);
+ void (*clear)(void *priv);
+
+ void *(*alloc)(struct ieee80211_local *local);
+ void (*free)(void *priv);
+ void *(*alloc_sta)(void *priv, gfp_t gfp);
+ void (*free_sta)(void *priv, void *priv_sta);
+
+ int (*add_attrs)(void *priv, struct kobject *kobj);
+ void (*remove_attrs)(void *priv, struct kobject *kobj);
+ void (*add_sta_debugfs)(void *priv, void *priv_sta,
+ struct dentry *dir);
+ void (*remove_sta_debugfs)(void *priv, void *priv_sta);
+};
+
+struct rate_control_ref {
+ struct rate_control_ops *ops;
+ void *priv;
+ struct kref kref;
+};
+
+int ieee80211_rate_control_register(struct rate_control_ops *ops);
+void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
+
+/* Get a reference to the rate control algorithm. If `name' is NULL, get the
+ * first available algorithm. */
+struct rate_control_ref *rate_control_alloc(const char *name,
+ struct ieee80211_local *local);
+void rate_control_get_rate(struct net_device *dev,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb,
+ struct rate_selection *sel);
+struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
+void rate_control_put(struct rate_control_ref *ref);
+
+static inline void rate_control_tx_status(struct net_device *dev,
+ struct sk_buff *skb,
+ struct ieee80211_tx_status *status)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct rate_control_ref *ref = local->rate_ctrl;
+
+ ref->ops->tx_status(ref->priv, dev, skb, status);
+}
+
+
+static inline void rate_control_rate_init(struct sta_info *sta,
+ struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ ref->ops->rate_init(ref->priv, sta->rate_ctrl_priv, local, sta);
+}
+
+
+static inline void rate_control_clear(struct ieee80211_local *local)
+{
+ struct rate_control_ref *ref = local->rate_ctrl;
+ ref->ops->clear(ref->priv);
+}
+
+static inline void *rate_control_alloc_sta(struct rate_control_ref *ref,
+ gfp_t gfp)
+{
+ return ref->ops->alloc_sta(ref->priv, gfp);
+}
+
+static inline void rate_control_free_sta(struct rate_control_ref *ref,
+ void *priv)
+{
+ ref->ops->free_sta(ref->priv, priv);
+}
+
+static inline void rate_control_add_sta_debugfs(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ if (sta->debugfs.dir && ref->ops->add_sta_debugfs)
+ ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv,
+ sta->debugfs.dir);
+#endif
+}
+
+static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
+{
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct rate_control_ref *ref = sta->rate_ctrl;
+ if (ref->ops->remove_sta_debugfs)
+ ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv);
+#endif
+}
+
+static inline int rate_supported(struct sta_info *sta,
+ enum ieee80211_band band,
+ int index)
+{
+ return (sta == NULL || sta->supp_rates[band] & BIT(index));
+}
+
+static inline int
+rate_lowest_index(struct ieee80211_local *local,
+ struct ieee80211_supported_band *sband,
+ struct sta_info *sta)
+{
+ int i;
+
+ for (i = 0; i < sband->n_bitrates; i++)
+ if (rate_supported(sta, sband->band, i))
+ return i;
+
+ /* warn when we cannot find a rate. */
+ WARN_ON(1);
+
+ return 0;
+}
+
+static inline struct ieee80211_rate *
+rate_lowest(struct ieee80211_local *local,
+ struct ieee80211_supported_band *sband,
+ struct sta_info *sta)
+{
+ return &sband->bitrates[rate_lowest_index(local, sband, sta)];
+}
+
+
+/* functions for rate control related to a device */
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+ const char *name);
+void rate_control_deinitialize(struct ieee80211_local *local);
+
+
+/* Rate control algorithms */
+#if defined(RC80211_PID_COMPILE) || \
+ (defined(CONFIG_MAC80211_RC_PID) && \
+ !defined(CONFIG_MAC80211_RC_PID_MODULE))
+extern int rc80211_pid_init(void);
+extern void rc80211_pid_exit(void);
+#else
+static inline int rc80211_pid_init(void)
+{
+ return 0;
+}
+static inline void rc80211_pid_exit(void)
+{
+}
+#endif
+
+#endif /* IEEE80211_RATE_H */
#include <linux/skbuff.h>
#include <linux/debugfs.h>
#include <net/mac80211.h>
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "mesh.h"
#include "rc80211_pid.h"
#include <linux/skbuff.h>
#include <net/mac80211.h>
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "rc80211_pid.h"
#include <net/ieee80211_radiotap.h>
#include "ieee80211_i.h"
-#include "ieee80211_led.h"
+#include "led.h"
#include "mesh.h"
#include "wep.h"
#include "wpa.h"
#include <net/mac80211.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "sta_info.h"
#include "debugfs_sta.h"
#include "mesh.h"
#include <linux/list.h>
#include <linux/types.h>
#include <linux/if_ether.h>
-#include "ieee80211_key.h"
+#include "key.h"
/**
* enum ieee80211_sta_info_flags - Stations flags
#include <linux/netdevice.h>
#include <net/mac80211.h>
-#include "ieee80211_key.h"
+#include "key.h"
#include "tkip.h"
#include "wep.h"
#include <linux/types.h>
#include <linux/crypto.h>
-#include "ieee80211_key.h"
+#include "key.h"
u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
u8 iv0, u8 iv1, u8 iv2);
#include <asm/unaligned.h>
#include "ieee80211_i.h"
-#include "ieee80211_led.h"
+#include "led.h"
#include "mesh.h"
#include "wep.h"
#include "wpa.h"
#include "wme.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#define IEEE80211_TX_OK 0
#define IEEE80211_TX_AGAIN 1
#include <net/rtnetlink.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
+#include "rate.h"
#include "mesh.h"
#include "wme.h"
#include <linux/skbuff.h>
#include <linux/types.h>
#include "ieee80211_i.h"
-#include "ieee80211_key.h"
+#include "key.h"
int ieee80211_wep_init(struct ieee80211_local *local);
void ieee80211_wep_free(struct ieee80211_local *local);
--- /dev/null
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#include <asm/uaccess.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "led.h"
+#include "rate.h"
+#include "wpa.h"
+#include "aes_ccm.h"
+
+
+static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
+ int idx, int alg, int remove,
+ int set_tx_key, const u8 *_key,
+ size_t key_len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_key *key;
+ struct ieee80211_sub_if_data *sdata;
+ int err;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (idx < 0 || idx >= NUM_DEFAULT_KEYS) {
+ printk(KERN_DEBUG "%s: set_encrypt - invalid idx=%d\n",
+ dev->name, idx);
+ return -EINVAL;
+ }
+
+ if (remove) {
+ rcu_read_lock();
+
+ err = 0;
+
+ if (is_broadcast_ether_addr(sta_addr)) {
+ key = sdata->keys[idx];
+ } else {
+ sta = sta_info_get(local, sta_addr);
+ if (!sta) {
+ err = -ENOENT;
+ goto out_unlock;
+ }
+ key = sta->key;
+ }
+
+ ieee80211_key_free(key);
+ } else {
+ key = ieee80211_key_alloc(alg, idx, key_len, _key);
+ if (!key)
+ return -ENOMEM;
+
+ sta = NULL;
+ err = 0;
+
+ rcu_read_lock();
+
+ if (!is_broadcast_ether_addr(sta_addr)) {
+ set_tx_key = 0;
+ /*
+ * According to the standard, the key index of a
+ * pairwise key must be zero. However, some AP are
+ * broken when it comes to WEP key indices, so we
+ * work around this.
+ */
+ if (idx != 0 && alg != ALG_WEP) {
+ ieee80211_key_free(key);
+ err = -EINVAL;
+ goto out_unlock;
+ }
+
+ sta = sta_info_get(local, sta_addr);
+ if (!sta) {
+ ieee80211_key_free(key);
+ err = -ENOENT;
+ goto out_unlock;
+ }
+ }
+
+ ieee80211_key_link(key, sdata, sta);
+
+ if (set_tx_key || (!sta && !sdata->default_key && key))
+ ieee80211_set_default_key(sdata, idx);
+ }
+
+ out_unlock:
+ rcu_read_unlock();
+
+ return err;
+}
+
+static int ieee80211_ioctl_siwgenie(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)
+ return -EOPNOTSUPP;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret = ieee80211_sta_set_extra_ie(dev, extra, data->length);
+ if (ret)
+ return ret;
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int ieee80211_ioctl_giwname(struct net_device *dev,
+ struct iw_request_info *info,
+ char *name, char *extra)
+{
+ strcpy(name, "IEEE 802.11");
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwrange(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_range *range = (struct iw_range *) extra;
+ enum ieee80211_band band;
+ int c = 0;
+
+ data->length = sizeof(struct iw_range);
+ memset(range, 0, sizeof(struct iw_range));
+
+ range->we_version_compiled = WIRELESS_EXT;
+ range->we_version_source = 21;
+ range->retry_capa = IW_RETRY_LIMIT;
+ range->retry_flags = IW_RETRY_LIMIT;
+ range->min_retry = 0;
+ range->max_retry = 255;
+ range->min_rts = 0;
+ range->max_rts = 2347;
+ range->min_frag = 256;
+ range->max_frag = 2346;
+
+ range->encoding_size[0] = 5;
+ range->encoding_size[1] = 13;
+ range->num_encoding_sizes = 2;
+ range->max_encoding_tokens = NUM_DEFAULT_KEYS;
+
+ range->max_qual.qual = local->hw.max_signal;
+ range->max_qual.level = local->hw.max_rssi;
+ range->max_qual.noise = local->hw.max_noise;
+ range->max_qual.updated = local->wstats_flags;
+
+ range->avg_qual.qual = local->hw.max_signal/2;
+ range->avg_qual.level = 0;
+ range->avg_qual.noise = 0;
+ range->avg_qual.updated = local->wstats_flags;
+
+ range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
+ IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
+
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
+ int i;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[band];
+
+ if (!sband)
+ continue;
+
+ for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
+ struct ieee80211_channel *chan = &sband->channels[i];
+
+ if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
+ range->freq[c].i =
+ ieee80211_frequency_to_channel(
+ chan->center_freq);
+ range->freq[c].m = chan->center_freq;
+ range->freq[c].e = 6;
+ c++;
+ }
+ }
+ }
+ range->num_channels = c;
+ range->num_frequency = c;
+
+ IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
+ IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
+ IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
+ IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
+
+ range->scan_capa |= IW_SCAN_CAPA_ESSID;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int type;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
+ return -EOPNOTSUPP;
+
+ switch (*mode) {
+ case IW_MODE_INFRA:
+ type = IEEE80211_IF_TYPE_STA;
+ break;
+ case IW_MODE_ADHOC:
+ type = IEEE80211_IF_TYPE_IBSS;
+ break;
+ case IW_MODE_MONITOR:
+ type = IEEE80211_IF_TYPE_MNTR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (type == sdata->vif.type)
+ return 0;
+ if (netif_running(dev))
+ return -EBUSY;
+
+ ieee80211_if_reinit(dev);
+ ieee80211_if_set_type(dev, type);
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwmode(struct net_device *dev,
+ struct iw_request_info *info,
+ __u32 *mode, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ switch (sdata->vif.type) {
+ case IEEE80211_IF_TYPE_AP:
+ *mode = IW_MODE_MASTER;
+ break;
+ case IEEE80211_IF_TYPE_STA:
+ *mode = IW_MODE_INFRA;
+ break;
+ case IEEE80211_IF_TYPE_IBSS:
+ *mode = IW_MODE_ADHOC;
+ break;
+ case IEEE80211_IF_TYPE_MNTR:
+ *mode = IW_MODE_MONITOR;
+ break;
+ case IEEE80211_IF_TYPE_WDS:
+ *mode = IW_MODE_REPEAT;
+ break;
+ case IEEE80211_IF_TYPE_VLAN:
+ *mode = IW_MODE_SECOND; /* FIXME */
+ break;
+ default:
+ *mode = IW_MODE_AUTO;
+ break;
+ }
+ return 0;
+}
+
+int ieee80211_set_freq(struct ieee80211_local *local, int freqMHz)
+{
+ int ret = -EINVAL;
+ struct ieee80211_channel *chan;
+
+ chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
+
+ if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
+ local->oper_channel = chan;
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ ret = 0;
+ else
+ ret = ieee80211_hw_config(local);
+
+ rate_control_clear(local);
+ }
+
+ return ret;
+}
+
+static int ieee80211_ioctl_siwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
+
+ /* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
+ if (freq->e == 0) {
+ if (freq->m < 0) {
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
+ sdata->u.sta.flags |=
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+ return 0;
+ } else
+ return ieee80211_set_freq(local,
+ ieee80211_channel_to_frequency(freq->m));
+ } else {
+ int i, div = 1000000;
+ for (i = 0; i < freq->e; i++)
+ div /= 10;
+ if (div > 0)
+ return ieee80211_set_freq(local, freq->m / div);
+ else
+ return -EINVAL;
+ }
+}
+
+
+static int ieee80211_ioctl_giwfreq(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_freq *freq, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ freq->m = local->hw.conf.channel->center_freq;
+ freq->e = 6;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ struct ieee80211_sub_if_data *sdata;
+ size_t len = data->length;
+
+ /* iwconfig uses nul termination in SSID.. */
+ if (len > 0 && ssid[len - 1] == '\0')
+ len--;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret;
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
+ if (len > IEEE80211_MAX_SSID_LEN)
+ return -EINVAL;
+ memcpy(sdata->u.sta.ssid, ssid, len);
+ sdata->u.sta.ssid_len = len;
+ return 0;
+ }
+ if (data->flags)
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
+ else
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_SSID_SEL;
+ ret = ieee80211_sta_set_ssid(dev, ssid, len);
+ if (ret)
+ return ret;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ memcpy(sdata->u.ap.ssid, ssid, len);
+ memset(sdata->u.ap.ssid + len, 0,
+ IEEE80211_MAX_SSID_LEN - len);
+ sdata->u.ap.ssid_len = len;
+ return ieee80211_if_config(dev);
+ }
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwessid(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *ssid)
+{
+ size_t len;
+
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int res = ieee80211_sta_get_ssid(dev, ssid, &len);
+ if (res == 0) {
+ data->length = len;
+ data->flags = 1;
+ } else
+ data->flags = 0;
+ return res;
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP) {
+ len = sdata->u.ap.ssid_len;
+ if (len > IW_ESSID_MAX_SIZE)
+ len = IW_ESSID_MAX_SIZE;
+ memcpy(ssid, sdata->u.ap.ssid, len);
+ data->length = len;
+ data->flags = 1;
+ return 0;
+ }
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ int ret;
+ if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME) {
+ memcpy(sdata->u.sta.bssid, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN);
+ return 0;
+ }
+ if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+ else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
+ sdata->u.sta.flags |= IEEE80211_STA_AUTO_BSSID_SEL;
+ else
+ sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_BSSID_SEL;
+ ret = ieee80211_sta_set_bssid(dev, (u8 *) &ap_addr->sa_data);
+ if (ret)
+ return ret;
+ ieee80211_sta_req_auth(dev, &sdata->u.sta);
+ return 0;
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ /*
+ * If it is necessary to update the WDS peer address
+ * while the interface is running, then we need to do
+ * more work here, namely if it is running we need to
+ * add a new and remove the old STA entry, this is
+ * normally handled by _open() and _stop().
+ */
+ if (netif_running(dev))
+ return -EBUSY;
+
+ memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data,
+ ETH_ALEN);
+
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_giwap(struct net_device *dev,
+ struct iw_request_info *info,
+ struct sockaddr *ap_addr, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
+ ap_addr->sa_family = ARPHRD_ETHER;
+ memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
+ return 0;
+ } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) {
+ ap_addr->sa_family = ARPHRD_ETHER;
+ memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+
+static int ieee80211_ioctl_siwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct iw_scan_req *req = NULL;
+ u8 *ssid = NULL;
+ size_t ssid_len = 0;
+
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
+ sdata->vif.type != IEEE80211_IF_TYPE_AP)
+ return -EOPNOTSUPP;
+
+ /* if SSID was specified explicitly then use that */
+ if (wrqu->data.length == sizeof(struct iw_scan_req) &&
+ wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+ req = (struct iw_scan_req *)extra;
+ ssid = req->essid;
+ ssid_len = req->essid_len;
+ }
+
+ return ieee80211_sta_req_scan(dev, ssid, ssid_len);
+}
+
+
+static int ieee80211_ioctl_giwscan(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ int res;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return -EAGAIN;
+
+ res = ieee80211_sta_scan_results(dev, extra, data->length);
+ if (res >= 0) {
+ data->length = res;
+ return 0;
+ }
+ data->length = 0;
+ return res;
+}
+
+
+static int ieee80211_ioctl_siwrate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rate, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int i, err = -EINVAL;
+ u32 target_rate = rate->value / 100000;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (!sdata->bss)
+ return -ENODEV;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates
+ * target_rate = X, rate->fixed = 1 means only rate X
+ * target_rate = X, rate->fixed = 0 means all rates <= X */
+ sdata->bss->max_ratectrl_rateidx = -1;
+ sdata->bss->force_unicast_rateidx = -1;
+ if (rate->value < 0)
+ return 0;
+
+ for (i=0; i< sband->n_bitrates; i++) {
+ struct ieee80211_rate *brate = &sband->bitrates[i];
+ int this_rate = brate->bitrate;
+
+ if (target_rate == this_rate) {
+ sdata->bss->max_ratectrl_rateidx = i;
+ if (rate->fixed)
+ sdata->bss->force_unicast_rateidx = i;
+ err = 0;
+ break;
+ }
+ }
+ return err;
+}
+
+static int ieee80211_ioctl_giwrate(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rate, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ return -EOPNOTSUPP;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, sdata->u.sta.bssid);
+
+ if (sta && sta->txrate_idx < sband->n_bitrates)
+ rate->value = sband->bitrates[sta->txrate_idx].bitrate;
+ else
+ rate->value = 0;
+
+ rcu_read_unlock();
+
+ if (!sta)
+ return -ENODEV;
+
+ rate->value *= 100000;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwtxpower(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ bool need_reconfig = 0;
+ int new_power_level;
+
+ if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
+ return -EINVAL;
+ if (data->txpower.flags & IW_TXPOW_RANGE)
+ return -EINVAL;
+
+ if (data->txpower.fixed) {
+ new_power_level = data->txpower.value;
+ } else {
+ /*
+ * Automatic power level. Use maximum power for the current
+ * channel. Should be part of rate control.
+ */
+ struct ieee80211_channel* chan = local->hw.conf.channel;
+ if (!chan)
+ return -EINVAL;
+
+ new_power_level = chan->max_power;
+ }
+
+ if (local->hw.conf.power_level != new_power_level) {
+ local->hw.conf.power_level = new_power_level;
+ need_reconfig = 1;
+ }
+
+ if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
+ local->hw.conf.radio_enabled = !(data->txpower.disabled);
+ need_reconfig = 1;
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
+ }
+
+ if (need_reconfig) {
+ ieee80211_hw_config(local);
+ /* The return value of hw_config is not of big interest here,
+ * as it doesn't say that it failed because of _this_ config
+ * change or something else. Ignore it. */
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *data, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ data->txpower.fixed = 1;
+ data->txpower.disabled = !(local->hw.conf.radio_enabled);
+ data->txpower.value = local->hw.conf.power_level;
+ data->txpower.flags = IW_TXPOW_DBM;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (rts->disabled)
+ local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+ else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
+ return -EINVAL;
+ else
+ local->rts_threshold = rts->value;
+
+ /* If the wlan card performs RTS/CTS in hardware/firmware,
+ * configure it here */
+
+ if (local->ops->set_rts_threshold)
+ local->ops->set_rts_threshold(local_to_hw(local),
+ local->rts_threshold);
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwrts(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *rts, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ rts->value = local->rts_threshold;
+ rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ rts->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (frag->disabled)
+ local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+ else if (frag->value < 256 ||
+ frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
+ return -EINVAL;
+ else {
+ /* Fragment length must be even, so strip LSB. */
+ local->fragmentation_threshold = frag->value & ~0x1;
+ }
+
+ /* If the wlan card performs fragmentation in hardware/firmware,
+ * configure it here */
+
+ if (local->ops->set_frag_threshold)
+ local->ops->set_frag_threshold(
+ local_to_hw(local),
+ local->fragmentation_threshold);
+
+ return 0;
+}
+
+static int ieee80211_ioctl_giwfrag(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *frag, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ frag->value = local->fragmentation_threshold;
+ frag->disabled = (frag->value >= IEEE80211_MAX_RTS_THRESHOLD);
+ frag->fixed = 1;
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_siwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ if (retry->disabled ||
+ (retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
+ return -EINVAL;
+
+ if (retry->flags & IW_RETRY_MAX)
+ local->long_retry_limit = retry->value;
+ else if (retry->flags & IW_RETRY_MIN)
+ local->short_retry_limit = retry->value;
+ else {
+ local->long_retry_limit = retry->value;
+ local->short_retry_limit = retry->value;
+ }
+
+ if (local->ops->set_retry_limit) {
+ return local->ops->set_retry_limit(
+ local_to_hw(local),
+ local->short_retry_limit,
+ local->long_retry_limit);
+ }
+
+ return 0;
+}
+
+
+static int ieee80211_ioctl_giwretry(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *retry, char *extra)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+ retry->disabled = 0;
+ if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
+ /* first return min value, iwconfig will ask max value
+ * later if needed */
+ retry->flags |= IW_RETRY_LIMIT;
+ retry->value = local->short_retry_limit;
+ if (local->long_retry_limit != local->short_retry_limit)
+ retry->flags |= IW_RETRY_MIN;
+ return 0;
+ }
+ if (retry->flags & IW_RETRY_MAX) {
+ retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ retry->value = local->long_retry_limit;
+ }
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwmlme(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct iw_mlme *mlme = (struct iw_mlme *) extra;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ return -EINVAL;
+
+ switch (mlme->cmd) {
+ case IW_MLME_DEAUTH:
+ /* TODO: mlme->addr.sa_data */
+ return ieee80211_sta_deauthenticate(dev, mlme->reason_code);
+ case IW_MLME_DISASSOC:
+ /* TODO: mlme->addr.sa_data */
+ return ieee80211_sta_disassociate(dev, mlme->reason_code);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+
+static int ieee80211_ioctl_siwencode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *keybuf)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int idx, i, alg = ALG_WEP;
+ u8 bcaddr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+ int remove = 0;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx == 0) {
+ if (sdata->default_key)
+ for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ } else if (idx < 1 || idx > 4)
+ return -EINVAL;
+ else
+ idx--;
+
+ if (erq->flags & IW_ENCODE_DISABLED)
+ remove = 1;
+ else if (erq->length == 0) {
+ /* No key data - just set the default TX key index */
+ ieee80211_set_default_key(sdata, idx);
+ return 0;
+ }
+
+ return ieee80211_set_encryption(
+ dev, bcaddr,
+ idx, alg, remove,
+ !sdata->default_key,
+ keybuf, erq->length);
+}
+
+
+static int ieee80211_ioctl_giwencode(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *key)
+{
+ struct ieee80211_sub_if_data *sdata;
+ int idx, i;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx < 1 || idx > 4) {
+ idx = -1;
+ if (!sdata->default_key)
+ idx = 0;
+ else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ if (idx < 0)
+ return -EINVAL;
+ } else
+ idx--;
+
+ erq->flags = idx + 1;
+
+ if (!sdata->keys[idx]) {
+ erq->length = 0;
+ erq->flags |= IW_ENCODE_DISABLED;
+ return 0;
+ }
+
+ memcpy(key, sdata->keys[idx]->conf.key,
+ min_t(int, erq->length, sdata->keys[idx]->conf.keylen));
+ erq->length = sdata->keys[idx]->conf.keylen;
+ erq->flags |= IW_ENCODE_ENABLED;
+
+ return 0;
+}
+
+static int ieee80211_ioctl_siwauth(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int ret = 0;
+
+ switch (data->flags & IW_AUTH_INDEX) {
+ case IW_AUTH_WPA_VERSION:
+ case IW_AUTH_CIPHER_PAIRWISE:
+ case IW_AUTH_CIPHER_GROUP:
+ case IW_AUTH_WPA_ENABLED:
+ case IW_AUTH_RX_UNENCRYPTED_EAPOL:
+ case IW_AUTH_KEY_MGMT:
+ break;
+ case IW_AUTH_DROP_UNENCRYPTED:
+ sdata->drop_unencrypted = !!data->value;
+ break;
+ case IW_AUTH_PRIVACY_INVOKED:
+ if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ ret = -EINVAL;
+ else {
+ sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
+ /*
+ * Privacy invoked by wpa_supplicant, store the
+ * value and allow associating to a protected
+ * network without having a key up front.
+ */
+ if (data->value)
+ sdata->u.sta.flags |=
+ IEEE80211_STA_PRIVACY_INVOKED;
+ }
+ break;
+ case IW_AUTH_80211_AUTH_ALG:
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ sdata->u.sta.auth_algs = data->value;
+ else
+ ret = -EOPNOTSUPP;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ return ret;
+}
+
+/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
+static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct iw_statistics *wstats = &local->wstats;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta = NULL;
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ sta = sta_info_get(local, sdata->u.sta.bssid);
+ if (!sta) {
+ wstats->discard.fragment = 0;
+ wstats->discard.misc = 0;
+ wstats->qual.qual = 0;
+ wstats->qual.level = 0;
+ wstats->qual.noise = 0;
+ wstats->qual.updated = IW_QUAL_ALL_INVALID;
+ } else {
+ wstats->qual.level = sta->last_rssi;
+ wstats->qual.qual = sta->last_signal;
+ wstats->qual.noise = sta->last_noise;
+ wstats->qual.updated = local->wstats_flags;
+ }
+ return wstats;
+}
+
+static int ieee80211_ioctl_giwauth(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_param *data, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int ret = 0;
+
+ switch (data->flags & IW_AUTH_INDEX) {
+ case IW_AUTH_80211_AUTH_ALG:
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ sdata->vif.type == IEEE80211_IF_TYPE_IBSS)
+ data->value = sdata->u.sta.auth_algs;
+ else
+ ret = -EOPNOTSUPP;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ return ret;
+}
+
+
+static int ieee80211_ioctl_siwencodeext(struct net_device *dev,
+ struct iw_request_info *info,
+ struct iw_point *erq, char *extra)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
+ int uninitialized_var(alg), idx, i, remove = 0;
+
+ switch (ext->alg) {
+ case IW_ENCODE_ALG_NONE:
+ remove = 1;
+ break;
+ case IW_ENCODE_ALG_WEP:
+ alg = ALG_WEP;
+ break;
+ case IW_ENCODE_ALG_TKIP:
+ alg = ALG_TKIP;
+ break;
+ case IW_ENCODE_ALG_CCMP:
+ alg = ALG_CCMP;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (erq->flags & IW_ENCODE_DISABLED)
+ remove = 1;
+
+ idx = erq->flags & IW_ENCODE_INDEX;
+ if (idx < 1 || idx > 4) {
+ idx = -1;
+ if (!sdata->default_key)
+ idx = 0;
+ else for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+ if (sdata->default_key == sdata->keys[i]) {
+ idx = i;
+ break;
+ }
+ }
+ if (idx < 0)
+ return -EINVAL;
+ } else
+ idx--;
+
+ return ieee80211_set_encryption(dev, ext->addr.sa_data, idx, alg,
+ remove,
+ ext->ext_flags &
+ IW_ENCODE_EXT_SET_TX_KEY,
+ ext->key, ext->key_len);
+}
+
+
+/* Structures to export the Wireless Handlers */
+
+static const iw_handler ieee80211_handler[] =
+{
+ (iw_handler) NULL, /* SIOCSIWCOMMIT */
+ (iw_handler) ieee80211_ioctl_giwname, /* SIOCGIWNAME */
+ (iw_handler) NULL, /* SIOCSIWNWID */
+ (iw_handler) NULL, /* SIOCGIWNWID */
+ (iw_handler) ieee80211_ioctl_siwfreq, /* SIOCSIWFREQ */
+ (iw_handler) ieee80211_ioctl_giwfreq, /* SIOCGIWFREQ */
+ (iw_handler) ieee80211_ioctl_siwmode, /* SIOCSIWMODE */
+ (iw_handler) ieee80211_ioctl_giwmode, /* SIOCGIWMODE */
+ (iw_handler) NULL, /* SIOCSIWSENS */
+ (iw_handler) NULL, /* SIOCGIWSENS */
+ (iw_handler) NULL /* not used */, /* SIOCSIWRANGE */
+ (iw_handler) ieee80211_ioctl_giwrange, /* SIOCGIWRANGE */
+ (iw_handler) NULL /* not used */, /* SIOCSIWPRIV */
+ (iw_handler) NULL /* kernel code */, /* SIOCGIWPRIV */
+ (iw_handler) NULL /* not used */, /* SIOCSIWSTATS */
+ (iw_handler) NULL /* kernel code */, /* SIOCGIWSTATS */
+ (iw_handler) NULL, /* SIOCSIWSPY */
+ (iw_handler) NULL, /* SIOCGIWSPY */
+ (iw_handler) NULL, /* SIOCSIWTHRSPY */
+ (iw_handler) NULL, /* SIOCGIWTHRSPY */
+ (iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
+ (iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
+ (iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
+ (iw_handler) NULL, /* SIOCGIWAPLIST */
+ (iw_handler) ieee80211_ioctl_siwscan, /* SIOCSIWSCAN */
+ (iw_handler) ieee80211_ioctl_giwscan, /* SIOCGIWSCAN */
+ (iw_handler) ieee80211_ioctl_siwessid, /* SIOCSIWESSID */
+ (iw_handler) ieee80211_ioctl_giwessid, /* SIOCGIWESSID */
+ (iw_handler) NULL, /* SIOCSIWNICKN */
+ (iw_handler) NULL, /* SIOCGIWNICKN */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
+ (iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
+ (iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
+ (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
+ (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
+ (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
+ (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
+ (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
+ (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
+ (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
+ (iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
+ (iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
+ (iw_handler) NULL, /* SIOCSIWPOWER */
+ (iw_handler) NULL, /* SIOCGIWPOWER */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) NULL, /* -- hole -- */
+ (iw_handler) ieee80211_ioctl_siwgenie, /* SIOCSIWGENIE */
+ (iw_handler) NULL, /* SIOCGIWGENIE */
+ (iw_handler) ieee80211_ioctl_siwauth, /* SIOCSIWAUTH */
+ (iw_handler) ieee80211_ioctl_giwauth, /* SIOCGIWAUTH */
+ (iw_handler) ieee80211_ioctl_siwencodeext, /* SIOCSIWENCODEEXT */
+ (iw_handler) NULL, /* SIOCGIWENCODEEXT */
+ (iw_handler) NULL, /* SIOCSIWPMKSA */
+ (iw_handler) NULL, /* -- hole -- */
+};
+
+const struct iw_handler_def ieee80211_iw_handler_def =
+{
+ .num_standard = ARRAY_SIZE(ieee80211_handler),
+ .standard = (iw_handler *) ieee80211_handler,
+ .get_wireless_stats = ieee80211_get_wireless_stats,
+};
projects / ~shefty / rdma-dev.git / commitdiff