mac80211: allow TDLS setup code to take wdev lock

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TDLS off-channel can be allowed in channels marked with GO_CONCURRENT,
provided the device is connected to an AP on the same UNII.
When relaxing the NO-IR requirements for TDLS, we might hit flows in
cfg80211_reg_can_beacon that acquire the wdev lock. Take some measures
to allow this during TDLS setup.
Acquire the RCU read lock later in the flow that invokes
cfg80211_reg_can_beacon.
Avoid taking local->mtx when preparing the setup packet to avoid
circular deadlocks with mac80211 code that is invoked with wdev-mtx
held.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Arik Nemtsov 2015-03-01 09:10:09 +02:00 • committed by Johannes Berg

parent 23e370989c

commit ae2e9fba85

1 changed files with 24 additions and 17 deletions

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net/mac80211/tdls.c

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