From e0d61887c2ee19bb63f6a8c0e2c149184e879501 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 12 May 2009 20:47:32 +0200 Subject: [PATCH] mac80211: don't connect to IBSS network with different privacy Even when we find an IBSS with the SSID we're looking for, we may not be able to connect to it because it has a key and we don't, or vice versa. Avoid such situations by checking the privacy capability bit. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/ibss.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index aa537681f87..c94a695d848 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -499,6 +499,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) struct ieee80211_channel *chan = NULL; const u8 *bssid = NULL; int active_ibss; + u16 capability; active_ibss = ieee80211_sta_active_ibss(sdata); #ifdef CONFIG_MAC80211_IBSS_DEBUG @@ -509,6 +510,10 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) if (active_ibss) return; + capability = WLAN_CAPABILITY_IBSS; + if (sdata->default_key) + capability |= WLAN_CAPABILITY_PRIVACY; + if (ifibss->fixed_bssid) bssid = ifibss->bssid; if (ifibss->fixed_channel) @@ -517,8 +522,9 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) bssid = ifibss->bssid; bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid, ifibss->ssid, ifibss->ssid_len, - WLAN_CAPABILITY_IBSS, - WLAN_CAPABILITY_IBSS); + capability, + WLAN_CAPABILITY_IBSS | + WLAN_CAPABILITY_PRIVACY); #ifdef CONFIG_MAC80211_IBSS_DEBUG if (bss) -- 2.41.0