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ath5k: capture CCK and OFDM restarts

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Treat frames that underwent a CCK or OFDM restart as frames with an invalid CRC.

Signed-off-by: Mathy Vanhoef <vanhoefm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mathy Vanhoef 2014-06-14 01:14:56 +02:00 committed by John W. Linville
parent 41881354f9
commit b76ff0d2e0
1 changed files with 14 additions and 1 deletions
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15
drivers/net/wireless/ath/ath5k/base.c
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@ -1462,7 +1462,20 @@ ath5k_receive_frame_ok(struct ath5k_hw *ah, struct ath5k_rx_status *rs)
ah->stats.rxerr_phy++;
if (rs->rs_phyerr > 0 && rs->rs_phyerr < 32)
ah->stats.rxerr_phy_code[rs->rs_phyerr]++;
return false;
/*
* Treat packets that underwent a CCK or OFDM reset as having a bad CRC.
* These restarts happen when the radio resynchronizes to a stronger frame
* while receiving a weaker frame. Here we receive the prefix of the weak
* frame. Since these are incomplete packets, mark their CRC as invalid.
*/
if (rs->rs_phyerr == AR5K_RX_PHY_ERROR_OFDM_RESTART ||
rs->rs_phyerr == AR5K_RX_PHY_ERROR_CCK_RESTART) {
rs->rs_status |= AR5K_RXERR_CRC;
rs->rs_status &= ~AR5K_RXERR_PHY;
} else {
return false;
}
}
if (rs->rs_status & AR5K_RXERR_DECRYPT) {
/*