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Commit b76ff0d2 authored by Mathy Vanhoef's avatar Mathy Vanhoef Committed by John W. Linville
Browse files

ath5k: capture CCK and OFDM restarts 



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

Signed-off-by: default avatarMathy Vanhoef <vanhoefm@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 41881354

drivers/net/wireless/ath/ath5k/base.c

+14 −1
Original line number Diff line number Diff line
@@ -1462,8 +1462,21 @@ 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]++;



			/*

			 * 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) {

			/*

			 * Decrypt error.  If the error occurred