mac80211: check if frame is really part of this BA

There was an an implicit assumption that any QoS data frame received
from a STA/TID with an active BA session was sent to this vif as part of
a BA.  This is not true if IFF_PROMISC is enabled and the frame was
destined for a different peer, for example. Don't treat these frames as
part of a BA from the sending STA.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 72c1eb4..04c1b05 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -744,6 +744,7 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx)
        struct ieee80211_local *local = rx->local;
        struct ieee80211_hw *hw = &local->hw;
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
        struct sta_info *sta = rx->sta;
        struct tid_ampdu_rx *tid_agg_rx;
        u16 sc;
@@ -777,6 +778,10 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx)
            ack_policy != IEEE80211_QOS_CTL_ACK_POLICY_NORMAL)
                goto dont_reorder;
 
+       /* not actually part of this BA session */
+       if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
+               goto dont_reorder;
+
        /* new, potentially un-ordered, ampdu frame - process it */
 
        /* reset session timer */