From 41881354f93a5e82f16c811f95e0700bf99283ec Mon Sep 17 00:00:00 2001 From: Mathy Vanhoef Date: Fri, 13 Jun 2014 23:40:22 +0200 Subject: [PATCH] ath5k: support for FIF_FCSFAIL filter When the FIF_FCSFAIL filter flag is set, pass frames with CRC errors. Signed-off-by: Mathy Vanhoef Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/ath5k.h | 1 + drivers/net/wireless/ath/ath5k/base.c | 16 ++++++++++++++-- drivers/net/wireless/ath/ath5k/mac80211-ops.c | 2 ++ 3 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h index 74bd54d..85316bb 100644 --- a/drivers/net/wireless/ath/ath5k/ath5k.h +++ b/drivers/net/wireless/ath/ath5k/ath5k.h @@ -1285,6 +1285,7 @@ struct ath5k_hw { #define ATH_STAT_STARTED 3 /* opened & irqs enabled */ unsigned int filter_flags; /* HW flags, AR5K_RX_FILTER_* */ + unsigned int fif_filter_flags; /* Current FIF_* filter flags */ struct ieee80211_channel *curchan; /* current h/w channel */ u16 nvifs; diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 4b18434..5839a34 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1382,6 +1382,9 @@ ath5k_receive_frame(struct ath5k_hw *ah, struct sk_buff *skb, rxs->flag = 0; if (unlikely(rs->rs_status & AR5K_RXERR_MIC)) rxs->flag |= RX_FLAG_MMIC_ERROR; + if (unlikely(rs->rs_status & AR5K_RXERR_CRC)) + rxs->flag |= RX_FLAG_FAILED_FCS_CRC; + /* * always extend the mac timestamp, since this information is @@ -1449,6 +1452,8 @@ ath5k_receive_frame_ok(struct ath5k_hw *ah, struct ath5k_rx_status *rs) ah->stats.rx_bytes_count += rs->rs_datalen; if (unlikely(rs->rs_status)) { + unsigned int filters; + if (rs->rs_status & AR5K_RXERR_CRC) ah->stats.rxerr_crc++; if (rs->rs_status & AR5K_RXERR_FIFO) @@ -1480,8 +1485,15 @@ ath5k_receive_frame_ok(struct ath5k_hw *ah, struct ath5k_rx_status *rs) return true; } - /* reject any frames with non-crypto errors */ - if (rs->rs_status & ~(AR5K_RXERR_DECRYPT)) + /* + * Reject any frames with non-crypto errors, and take into account the + * current FIF_* filters. + */ + filters = AR5K_RXERR_DECRYPT; + if (ah->fif_filter_flags & FIF_FCSFAIL) + filters |= AR5K_RXERR_CRC; + + if (rs->rs_status & ~filters) return false; } diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c index afb23b3..b65c38f 100644 --- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c +++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c @@ -473,6 +473,8 @@ ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, /* Set the cached hw filter flags, this will later actually * be set in HW */ ah->filter_flags = rfilt; + /* Store current FIF filter flags */ + ah->fif_filter_flags = *new_flags; mutex_unlock(&ah->lock); } -- 2.7.4