From 979e1f08042b83152dfe3d76df10db31eb7edf98 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 22 Jun 2017 12:20:28 +0200 Subject: 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 --- net/mac80211/agg-tx.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'net') 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(); } /* -- cgit v1.2.3