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mt7601u: fix tx status reporting contexts

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mac80211 requires that rx path does not run concurrently with
tx status reporting.  Since rx path is run in driver tasklet,
tx status cannot be reported directly from interrupt context
(there would be no way to lock it out).

Add tasklet for tx and move all possible code from irq handler
there.

Note: tx tasklet is needed because workqueue is queued very
      rarely and that kills TCP performance.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Jakub Kicinski
2015-07-31 15:04:48 +02:00
committed by Kalle Valo
parent d9517c0a5d
commit 4513493d18
4 changed files with 33 additions and 4 deletions
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1
drivers/net/wireless/mediatek/mt7601u/init.c
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@@ -456,6 +456,7 @@ struct mt7601u_dev *mt7601u_alloc_device(struct device *pdev)
spin_lock_init(&dev->lock);
spin_lock_init(&dev->con_mon_lock);
atomic_set(&dev->avg_ampdu_len, 1);
skb_queue_head_init(&dev->tx_skb_done);
dev->stat_wq = alloc_workqueue("mt7601u", WQ_UNBOUND, 0);
if (!dev->stat_wq) {