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authorAndrei Otcheretianski <andrei.otcheretianski@intel.com>2015-03-12 09:53:30 +0300
committerSasha Levin <sasha.levin@oracle.com>2015-04-17 03:11:38 +0300
commite6171aa2574c62e8b883280fb32bd3f8af0b9e59 (patch)
treeb9f03a4e51a64ddc4cd90351e42670685a924212 /net/mac80211
parentd78408c0288dce070487844ba2694cd8c1114437 (diff)
downloadlinux-e6171aa2574c62e8b883280fb32bd3f8af0b9e59.tar.xz
mac80211: count interfaces correctly for combination checks
[ Upstream commit 0f611d28fc2e13cfec64e1c544c16a086886805a ] 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> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'net/mac80211')
-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 3c61060a4d2b..0043256df486 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3050,7 +3050,7 @@ 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;