diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2012-05-31 15:09:27 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-06-04 15:25:26 -0400 |
| commit | 71ecfa1893034eeb1c93e02e22ee2ad26d080858 (patch) | |
| tree | 2c688e9b8ae902d95077e90ee2b7bb80344feee4 /net/mac80211/offchannel.c | |
| parent | 1ae2fc25a1289a84ca726541e3356ba5bcb7f7fe (diff) | |
| download | lwn-71ecfa1893034eeb1c93e02e22ee2ad26d080858.tar.gz lwn-71ecfa1893034eeb1c93e02e22ee2ad26d080858.zip | |
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.c | 16 |
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, |