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authorJohannes Berg <johannes.berg@intel.com>2017-06-22 13:20:28 +0300
committerJohannes Berg <johannes.berg@intel.com>2017-09-05 17:25:07 +0300
commit979e1f08042b83152dfe3d76df10db31eb7edf98 (patch)
tree3a034726fb51744f3ea0ee9b81b3f96f118853c7 /net/mac80211
parent9de981f507474f326e42117858dc9a9321331ae5 (diff)
downloadlinux-979e1f08042b83152dfe3d76df10db31eb7edf98.tar.xz
mac80211: agg-tx: call drv_wake_tx_queue in proper context
Since drv_wake_tx_queue() is normally called in the TX path, which is already in an RCU critical section, we should call it the same way in the aggregation code path, so if the driver expects to be able to use RCU, it'll already be protected without having to enter a nested critical section. Additionally, disable soft-IRQs, since not doing so could cause issues in a driver that relies on them already being disabled like in the other path. Fixes: ba8c3d6f16a1 ("mac80211: add an intermediate software queue implementation") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/agg-tx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 420486b5a1d9..bef516ec47f9 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -226,7 +226,11 @@ ieee80211_agg_start_txq(struct sta_info *sta, int tid, bool enable)
clear_bit(IEEE80211_TXQ_AMPDU, &txqi->flags);
clear_bit(IEEE80211_TXQ_STOP, &txqi->flags);
+ local_bh_disable();
+ rcu_read_lock();
drv_wake_tx_queue(sta->sdata->local, txqi);
+ rcu_read_unlock();
+ local_bh_enable();
}
/*