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authorAndrei Otcheretianski <andrei.otcheretianski@intel.com>2015-03-12 09:53:30 +0300
committerJohannes Berg <johannes.berg@intel.com>2015-03-16 11:35:59 +0300
commit0f611d28fc2e13cfec64e1c544c16a086886805a (patch)
tree56ccc0f5079ec4cf869b9692294eb7f3a4a31d8b /net
parentaa75ebc275b2a91b193654a177daf900ad6703f0 (diff)
downloadlinux-0f611d28fc2e13cfec64e1c544c16a086886805a.tar.xz
mac80211: count interfaces correctly for combination checks
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. Cc: stable@vger.kernel.org [3.16+] Fixes: 73de86a38962b ("cfg80211/mac80211: move interface counting for combination check to mac80211") Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> [rewrite commit message, dig out the commit it fixes] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/util.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 8428f4a95479..747bdcf72e92 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3178,7 +3178,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
wdev_iter = &sdata_iter->wdev;
if (sdata_iter == sdata ||
- rcu_access_pointer(sdata_iter->vif.chanctx_conf) == NULL ||
+ !ieee80211_sdata_running(sdata_iter) ||
local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
continue;