mac80211: fix offchannel TX cookie matching
When I introduced in-kernel off-channel TX I
introduced a bug -- the work can't be canceled
again because the code clear the skb pointer.
Fix this by keeping track separately of whether
TX status has already been reported.
Cc: stable@kernel.org [2.6.38+]
Reported-by: Jouni Malinen <j@w1.fi>
Tested-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1309bb9..d0705f2 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1886,7 +1886,7 @@
* so in that case userspace will have to deal with it.
*/
- if (wk->offchan_tx.wait && wk->offchan_tx.frame)
+ if (wk->offchan_tx.wait && !wk->offchan_tx.status)
cfg80211_mgmt_tx_status(wk->sdata->dev,
(unsigned long) wk->offchan_tx.frame,
wk->ie, wk->ie_len, false, GFP_KERNEL);