ath5k: support for FIF_FCSFAIL filter

When the FIF_FCSFAIL filter flag is set, pass frames with CRC errors.

Signed-off-by: Mathy Vanhoef <vanhoefm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 74bd54d..85316bb 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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);
 }