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mt76: implement processing of BlockAckReq frames

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Avoids timeouts on reordered A-MPDU rx frames

Fixes: aee5b8cf24 ("mt76: implement A-MPDU rx reordering in the driver code")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2018-01-27 16:02:04 +01:00 committed by Kalle Valo
parent d71ef28636
commit 17cf68b702
1 changed files with 33 additions and 1 deletions
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34
drivers/net/wireless/mediatek/mt76/agg-rx.c
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@ -113,6 +113,33 @@ mt76_rx_aggr_reorder_work(struct work_struct *work)
local_bh_enable(); local_bh_enable();
} }
static void
mt76_rx_aggr_check_ctl(struct sk_buff *skb, struct sk_buff_head *frames)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
struct ieee80211_bar *bar = (struct ieee80211_bar *) skb->data;
struct mt76_wcid *wcid = status->wcid;
struct mt76_rx_tid *tid;
u16 seqno;
if (!ieee80211_is_ctl(bar->frame_control))
return;
if (!ieee80211_is_back_req(bar->frame_control))
return;
status->tid = le16_to_cpu(bar->control) >> 12;
seqno = le16_to_cpu(bar->start_seq_num) >> 4;
tid = rcu_dereference(wcid->aggr[status->tid]);
if (!tid)
return;
spin_lock_bh(&tid->lock);
mt76_rx_aggr_release_frames(tid, frames, seqno);
mt76_rx_aggr_release_head(tid, frames);
spin_unlock_bh(&tid->lock);
}
void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames) void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
{ {
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb; struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
@ -126,9 +153,14 @@ void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
__skb_queue_tail(frames, skb); __skb_queue_tail(frames, skb);
sta = wcid_to_sta(wcid); sta = wcid_to_sta(wcid);
if (!sta || !status->aggr) if (!sta)
return; return;
if (!status->aggr) {
mt76_rx_aggr_check_ctl(skb, frames);
return;
}
tid = rcu_dereference(wcid->aggr[status->tid]); tid = rcu_dereference(wcid->aggr[status->tid]);
if (!tid) if (!tid)
return; return;