diff options
| author | Felix Fietkau <nbd@nbd.name> | 2018-04-25 12:11:22 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-04-30 13:21:28 +0300 |
| commit | 9febfa67ca1566294ea5fd1f95ebf02181e7a233 (patch) | |
| tree | bcf3d23c6cd755fdd1917c325ca942f0d9191afb /drivers/net/wireless/mediatek/mt76 | |
| parent | c3d7c82a8bb017e43cafe8eaf7c8309f85ceb781 (diff) | |
| download | linux-9febfa67ca1566294ea5fd1f95ebf02181e7a233.tar.xz | |
mt76: add rcu locking in tid reorder function
Avoids having the tid or station entry disappear prematurely.
Also cancel the reorder work earlier to avoid further processing delayed
by waiting for the lock to be released
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/agg-rx.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/agg-rx.c b/drivers/net/wireless/mediatek/mt76/agg-rx.c index dbf4057d2d3e..b67acc6189bf 100644 --- a/drivers/net/wireless/mediatek/mt76/agg-rx.c +++ b/drivers/net/wireless/mediatek/mt76/agg-rx.c @@ -103,6 +103,7 @@ mt76_rx_aggr_reorder_work(struct work_struct *work) __skb_queue_head_init(&frames); local_bh_disable(); + rcu_read_lock(); spin_lock(&tid->lock); mt76_rx_aggr_check_release(tid, &frames); @@ -114,6 +115,7 @@ mt76_rx_aggr_reorder_work(struct work_struct *work) REORDER_TIMEOUT); mt76_rx_complete(dev, &frames, -1); + rcu_read_unlock(); local_bh_enable(); } @@ -266,6 +268,8 @@ static void mt76_rx_aggr_shutdown(struct mt76_dev *dev, struct mt76_rx_tid *tid) u8 size = tid->size; int i; + cancel_delayed_work(&tid->reorder_work); + spin_lock_bh(&tid->lock); tid->stopped = true; @@ -280,8 +284,6 @@ static void mt76_rx_aggr_shutdown(struct mt76_dev *dev, struct mt76_rx_tid *tid) } spin_unlock_bh(&tid->lock); - - cancel_delayed_work(&tid->reorder_work); } void mt76_rx_aggr_stop(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tidno) |