From: Sujith Manoharan Date: Wed, 14 Aug 2013 03:41:20 +0000 (+0530) Subject: ath9k: Handle corrupt descriptors properly X-Git-Tag: upstream/snapshot3+hdmi~4422^2~84^2^2~76 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b09255957b69d7b5ea1ad9d2b455a4f8769e06e7;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git ath9k: Handle corrupt descriptors properly The MIC/PHYERR/CRC error bits are valid only for the last desc. for chained packets. Check this early in the preprocess() routine and bail out. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 5b84ce4..30cb726 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -1099,6 +1099,16 @@ static int ath9k_rx_skb_preprocess(struct ath_softc *sc, if (rx_stats->rs_more) return 0; + /* + * Return immediately if the RX descriptor has been marked + * as corrupt based on the various error bits. + * + * This is different from the other corrupt descriptor + * condition handled above. + */ + if (rx_stats->rs_status & ATH9K_RXERR_CORRUPT_DESC) + return -EINVAL; + hdr = (struct ieee80211_hdr *) (skb->data + ah->caps.rx_status_len); ath9k_process_tsf(rx_stats, rx_status, tsf); @@ -1335,8 +1345,6 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) sc->rx.frag = skb; goto requeue; } - if (rs.rs_status & ATH9K_RXERR_CORRUPT_DESC) - goto requeue_drop_frag; if (sc->rx.frag) { int space = skb->len - skb_tailroom(hdr_skb);