kernel/git/stable/linux-stable.git/net/mac80211/util.c, branch linux-3.16.y

mac80211: fix divide by zero when NOA update

2015-12-13T17:49:04+00:00

commit 519ee6918b91abdc4bc9720deae17599a109eb40 upstream. In case of one shot NOA the interval can be 0, catch that instead of potentially (depending on the driver) crashing like this: divide error: 0000 [#1] SMP [...] Call Trace: [] ieee80211_extend_absent_time+0x6c/0xb0 [mac80211] [] ieee80211_update_p2p_noa+0xb7/0xe0 [mac80211] [] ath9k_p2p_ps_timer+0x170/0x190 [ath9k] [] ath_gen_timer_isr+0xc8/0xf0 [ath9k_hw] [] ath9k_tasklet+0x296/0x2f0 [ath9k] [] tasklet_action+0xe5/0xf0 [...] Signed-off-by: Janusz Dziedzic Signed-off-by: Johannes Berg Signed-off-by: Luis Henriques

mac80211: count interfaces correctly for combination checks

2015-03-30T10:11:36+00:00

commit 0f611d28fc2e13cfec64e1c544c16a086886805a upstream. Since moving the interface combination checks to mac80211, it's broken because it now only considers interfaces with an assigned channel context, so for example any interface that isn't active can still be up, which is clearly an issue; also, in particular P2P-Device wdevs are an issue since they never have a chanctx. Fix this by counting running interfaces instead the ones with a channel context assigned. Fixes: 73de86a38962b ("cfg80211/mac80211: move interface counting for combination check to mac80211") Signed-off-by: Andrei Otcheretianski Signed-off-by: Emmanuel Grumbach [rewrite commit message, dig out the commit it fixes] Signed-off-by: Johannes Berg Signed-off-by: Luis Henriques

mac80211: WEP extra head/tail room in ieee80211_send_auth

2014-06-23T08:45:14+00:00

After skb allocation and call to ieee80211_wep_encrypt in ieee80211_send_auth the flow fails with a warning in ieee80211_wep_add_iv on verification of available head/tailroom needed for WEP_IV and WEP_ICV. Signed-off-by: Max Stepanov Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2014-05-22T17:58:36+00:00

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

2014-05-13T19:27:44+00:00

mac80211: handle failed restart/resume better

2014-05-09T10:21:34+00:00

When the driver fails during HW restart or resume, the whole stack goes into a very confused state with interfaces being up while the hardware is down etc. Address this by shutting down everything; we'll run into a lot of warnings in the process but that's better than having the whole stack get messed up. Reviewed-by: Arik Nemtsov Signed-off-by: Johannes Berg

mac80211: fix nested rtnl locking on ieee80211_reconfig

2014-05-05T13:14:58+00:00

ieee80211_reconfig already holds rtnl, so calling cfg80211_sched_scan_stopped results in deadlock. Use the rtnl-version of this function instead. Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart") Cc: stable@vger.kernel.org (3.14+) Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg

mac80211: remove unnecessary assignment

2014-04-28T15:53:19+00:00

P2P_DEVICE doesn't support ieee80211_bss_info_change_notify() for now, so it's not needed to set changed flags for P2P_DEVICE. Signed-off-by: Zhao, Gang Signed-off-by: Johannes Berg

mac80211: avoid calling useless channel context code

2014-04-28T15:52:32+00:00

ieee80211_assign_chanctx() checks if local->use_chanctx is true, so the two code block related to ieee80211_assign_chanctx() can be moved into above if clause, emphasize that these code are executed only if local->use_chanctx is true. Signed-off-by: Zhao, Gang [change subject] Signed-off-by: Johannes Berg

mac80211: add max channel calculation utility function

2014-04-25T15:08:15+00:00

The utility function has no uses yet. It is aimed at future chanctx reservation management and channel switching. Signed-off-by: Michal Kazior Signed-off-by: Johannes Berg