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authorJohannes Berg <johannes.berg@intel.com>2012-05-31 15:09:27 +0200
committerJohn W. Linville <linville@tuxdriver.com>2012-06-04 15:25:26 -0400
commit71ecfa1893034eeb1c93e02e22ee2ad26d080858 (patch)
tree2c688e9b8ae902d95077e90ee2b7bb80344feee4 /net/mac80211/offchannel.c
parent1ae2fc25a1289a84ca726541e3356ba5bcb7f7fe (diff)
downloadlinux-stericsson-71ecfa1893034eeb1c93e02e22ee2ad26d080858.tar.gz
mac80211: clean up remain-on-channel on interface stop
When any interface goes down, it could be the one that we were doing a remain-on-channel with. We therefore need to cancel the remain-on-channel and flush the related work structs so they don't run after the interface has been removed or even destroyed. It's also possible in this case that an off-channel SKB was never transmitted, so free it if this is the case. Note that this can also happen if the driver finishes the off-channel period without ever starting it. Cc: stable@kernel.org Reported-by: Nirav Shah <nirav.j2.shah@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/offchannel.c')
-rw-r--r--net/mac80211/offchannel.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index f054e94901a2..935aa4b6deee 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -234,6 +234,22 @@ static void ieee80211_hw_roc_done(struct work_struct *work)
return;
}
+ /* was never transmitted */
+ if (local->hw_roc_skb) {
+ u64 cookie;
+
+ cookie = local->hw_roc_cookie ^ 2;
+
+ cfg80211_mgmt_tx_status(local->hw_roc_dev, cookie,
+ local->hw_roc_skb->data,
+ local->hw_roc_skb->len, false,
+ GFP_KERNEL);
+
+ kfree_skb(local->hw_roc_skb);
+ local->hw_roc_skb = NULL;
+ local->hw_roc_skb_for_status = NULL;
+ }
+
if (!local->hw_roc_for_tx)
cfg80211_remain_on_channel_expired(local->hw_roc_dev,
local->hw_roc_cookie,