From 5a078fcbdedf88cc3a76ed1b3b4a55a5c61a2e7f Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Tue, 4 Feb 2014 10:27:47 +0100 Subject: [PATCH] ath9k: move ath9k_rx_skb_postprocess to common.c and rename it to ath9k_cmn_rx_skb_postprocess. We will use it on ath9k_htc. Signed-off-by: Oleksij Rempel Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/common.c | 52 +++++++++++++++++++++++ drivers/net/wireless/ath/ath9k/common.h | 5 +++ drivers/net/wireless/ath/ath9k/recv.c | 55 +------------------------ 3 files changed, 59 insertions(+), 53 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c index 5c0d94936a0..c6dd7f1fed6 100644 --- a/drivers/net/wireless/ath/ath9k/common.c +++ b/drivers/net/wireless/ath/ath9k/common.c @@ -115,6 +115,58 @@ bool ath9k_cmn_rx_accept(struct ath_common *common, } EXPORT_SYMBOL(ath9k_cmn_rx_accept); +void ath9k_cmn_rx_skb_postprocess(struct ath_common *common, + struct sk_buff *skb, + struct ath_rx_status *rx_stats, + struct ieee80211_rx_status *rxs, + bool decrypt_error) +{ + struct ath_hw *ah = common->ah; + struct ieee80211_hdr *hdr; + int hdrlen, padpos, padsize; + u8 keyix; + __le16 fc; + + /* see if any padding is done by the hw and remove it */ + hdr = (struct ieee80211_hdr *) skb->data; + hdrlen = ieee80211_get_hdrlen_from_skb(skb); + fc = hdr->frame_control; + padpos = ieee80211_hdrlen(fc); + + /* The MAC header is padded to have 32-bit boundary if the + * packet payload is non-zero. The general calculation for + * padsize would take into account odd header lengths: + * padsize = (4 - padpos % 4) % 4; However, since only + * even-length headers are used, padding can only be 0 or 2 + * bytes and we can optimize this a bit. In addition, we must + * not try to remove padding from short control frames that do + * not have payload. */ + padsize = padpos & 3; + if (padsize && skb->len>=padpos+padsize+FCS_LEN) { + memmove(skb->data + padsize, skb->data, padpos); + skb_pull(skb, padsize); + } + + keyix = rx_stats->rs_keyix; + + if (!(keyix == ATH9K_RXKEYIX_INVALID) && !decrypt_error && + ieee80211_has_protected(fc)) { + rxs->flag |= RX_FLAG_DECRYPTED; + } else if (ieee80211_has_protected(fc) + && !decrypt_error && skb->len >= hdrlen + 4) { + keyix = skb->data[hdrlen + 3] >> 6; + + if (test_bit(keyix, common->keymap)) + rxs->flag |= RX_FLAG_DECRYPTED; + } + if (ah->sw_mgmt_crypto && + (rxs->flag & RX_FLAG_DECRYPTED) && + ieee80211_is_mgmt(fc)) + /* Use software decrypt for management frames. */ + rxs->flag &= ~RX_FLAG_DECRYPTED; +} +EXPORT_SYMBOL(ath9k_cmn_rx_skb_postprocess); + int ath9k_cmn_process_rate(struct ath_common *common, struct ieee80211_hw *hw, struct ath_rx_status *rx_stats, diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h index c59d3f5db2c..38b5609a401 100644 --- a/drivers/net/wireless/ath/ath9k/common.h +++ b/drivers/net/wireless/ath/ath9k/common.h @@ -48,6 +48,11 @@ bool ath9k_cmn_rx_accept(struct ath_common *common, struct ath_rx_status *rx_stats, bool *decrypt_error, unsigned int rxfilter); +void ath9k_cmn_rx_skb_postprocess(struct ath_common *common, + struct sk_buff *skb, + struct ath_rx_status *rx_stats, + struct ieee80211_rx_status *rxs, + bool decrypt_error); int ath9k_cmn_process_rate(struct ath_common *common, struct ieee80211_hw *hw, struct ath_rx_status *rx_stats, diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 4dedbc237c9..076dae1e5ab 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -901,57 +901,6 @@ exit: return ret; } -static void ath9k_rx_skb_postprocess(struct ath_common *common, - struct sk_buff *skb, - struct ath_rx_status *rx_stats, - struct ieee80211_rx_status *rxs, - bool decrypt_error) -{ - struct ath_hw *ah = common->ah; - struct ieee80211_hdr *hdr; - int hdrlen, padpos, padsize; - u8 keyix; - __le16 fc; - - /* see if any padding is done by the hw and remove it */ - hdr = (struct ieee80211_hdr *) skb->data; - hdrlen = ieee80211_get_hdrlen_from_skb(skb); - fc = hdr->frame_control; - padpos = ieee80211_hdrlen(fc); - - /* The MAC header is padded to have 32-bit boundary if the - * packet payload is non-zero. The general calculation for - * padsize would take into account odd header lengths: - * padsize = (4 - padpos % 4) % 4; However, since only - * even-length headers are used, padding can only be 0 or 2 - * bytes and we can optimize this a bit. In addition, we must - * not try to remove padding from short control frames that do - * not have payload. */ - padsize = padpos & 3; - if (padsize && skb->len>=padpos+padsize+FCS_LEN) { - memmove(skb->data + padsize, skb->data, padpos); - skb_pull(skb, padsize); - } - - keyix = rx_stats->rs_keyix; - - if (!(keyix == ATH9K_RXKEYIX_INVALID) && !decrypt_error && - ieee80211_has_protected(fc)) { - rxs->flag |= RX_FLAG_DECRYPTED; - } else if (ieee80211_has_protected(fc) - && !decrypt_error && skb->len >= hdrlen + 4) { - keyix = skb->data[hdrlen + 3] >> 6; - - if (test_bit(keyix, common->keymap)) - rxs->flag |= RX_FLAG_DECRYPTED; - } - if (ah->sw_mgmt_crypto && - (rxs->flag & RX_FLAG_DECRYPTED) && - ieee80211_is_mgmt(fc)) - /* Use software decrypt for management frames. */ - rxs->flag &= ~RX_FLAG_DECRYPTED; -} - /* * Run the LNA combining algorithm only in these cases: * @@ -1101,8 +1050,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) skb_pull(skb, ah->caps.rx_status_len); if (!rs.rs_more) - ath9k_rx_skb_postprocess(common, hdr_skb, &rs, - rxs, decrypt_error); + ath9k_cmn_rx_skb_postprocess(common, hdr_skb, &rs, + rxs, decrypt_error); if (rs.rs_more) { RX_STAT_INC(rx_frags); -- 2.41.0