diff options
author | Felix Fietkau <nbd@nbd.name> | 2018-10-25 16:11:34 +0200 |
---|---|---|
committer | Felix Fietkau <nbd@nbd.name> | 2018-11-30 12:21:42 +0100 |
commit | 88046b2c9f6d8b91cc8b3ada547f49f6dd45469b (patch) | |
tree | 9d9cb060a3b528b42fc4fa1e0b5700ba2e4513da /drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c | |
parent | 59b55d066ff625f8613c563bd2ed705bce412fa8 (diff) |
mt76: add support for reporting tx status with skb
MT76x2/MT76x0 has somewhat unreliable tx status reporting, and for that
reason the driver currently does not report per-skb tx ack status at all.
This breaks things like client idle polling, which relies on the tx ack
status of a transmitted nullfunc frame.
This patch adds code to report skb-attached tx status if requested by
mac80211 or the rate control module. Since tx status is polled from a
simple FIFO register, the code needs to account for the possibility of
tx status events getting lost.
The code keeps a list of skbs for which tx status is required and passes
them to mac80211 once tx status has been filled in and the DMA queue is
done with it.
If a tx status event is not received after one second, the status rates
are cleared, and a succesful ACK is indicated to avoid spurious disassoc
during assoc or client polling.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c')
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c index dc2226c722dd..81970cf777c0 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_core.c @@ -30,7 +30,7 @@ void mt76x02u_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue *q, struct mt76_queue_entry *e, bool flush) { mt76x02u_remove_dma_hdr(e->skb); - mt76x02_tx_complete(mdev, e->skb); + mt76_tx_complete_skb(mdev, e->skb); } EXPORT_SYMBOL_GPL(mt76x02u_tx_complete_skb); @@ -67,27 +67,6 @@ int mt76x02u_skb_dma_info(struct sk_buff *skb, int port, u32 flags) return 0; } -static int -mt76x02u_set_txinfo(struct sk_buff *skb, struct mt76_wcid *wcid, u8 ep) -{ - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - enum mt76_qsel qsel; - u32 flags; - - if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) || - ep == MT_EP_OUT_HCCA) - qsel = MT_QSEL_MGMT; - else - qsel = MT_QSEL_EDCA; - - flags = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) | - MT_TXD_INFO_80211; - if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv) - flags |= MT_TXD_INFO_WIV; - - return mt76x02u_skb_dma_info(skb, WLAN_PORT, flags); -} - int mt76x02u_tx_prepare_skb(struct mt76_dev *mdev, void *data, struct sk_buff *skb, struct mt76_queue *q, struct mt76_wcid *wcid, struct ieee80211_sta *sta, @@ -95,13 +74,30 @@ int mt76x02u_tx_prepare_skb(struct mt76_dev *mdev, void *data, { struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); struct mt76x02_txwi *txwi; + enum mt76_qsel qsel; int len = skb->len; + u32 flags; + int pid; mt76x02_insert_hdr_pad(skb); txwi = skb_push(skb, sizeof(struct mt76x02_txwi)); mt76x02_mac_write_txwi(dev, txwi, skb, wcid, sta, len); - return mt76x02u_set_txinfo(skb, wcid, q2ep(q->hw_idx)); + pid = mt76_tx_status_skb_add(mdev, wcid, skb); + txwi->pktid = pid; + + if ((pid && pid != MT_PACKET_ID_NO_ACK) || + q2ep(q->hw_idx) == MT_EP_OUT_HCCA) + qsel = MT_QSEL_MGMT; + else + qsel = MT_QSEL_EDCA; + + flags = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) | + MT_TXD_INFO_80211; + if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv) + flags |= MT_TXD_INFO_WIV; + + return mt76x02u_skb_dma_info(skb, WLAN_PORT, flags); } EXPORT_SYMBOL_GPL(mt76x02u_tx_prepare_skb); |