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mt7603: fix buffered multicast queue flush

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For some reason the BMC queue flush does not work properly if packets were
queued for a BSS0_n interface (secondary vif).
Work around this issue by using the DMA scheduler to filter the queue before
issueing the BMC queue flush.

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2019-01-22 15:25:16 +01:00
parent e342cc5c72
commit aa470d8655
1 changed files with 14 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt7603/beacon.c
+14 -3
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@@ -40,6 +40,17 @@ mt7603_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
mt76_dma_tx_queue_skb(&dev->mt76, &dev->mt76.q_tx[MT_TXQ_BEACON], skb,
&mvif->sta.wcid, NULL);
spin_lock_bh(&dev->ps_lock);
mt76_wr(dev, MT_DMA_FQCR0, MT_DMA_FQCR0_BUSY |
FIELD_PREP(MT_DMA_FQCR0_TARGET_WCID, mvif->sta.wcid.idx) |
FIELD_PREP(MT_DMA_FQCR0_TARGET_QID, dev->mt76.q_tx[MT_TXQ_CAB].hw_idx) |
FIELD_PREP(MT_DMA_FQCR0_DEST_PORT_ID, 3) |
FIELD_PREP(MT_DMA_FQCR0_DEST_QUEUE_ID, 8));
WARN_ON_ONCE(!mt76_poll(dev, MT_DMA_FQCR0, MT_DMA_FQCR0_BUSY,
0, 5000));
spin_unlock_bh(&dev->ps_lock);
}
static void
@@ -75,9 +86,6 @@ void mt7603_pre_tbtt_tasklet(unsigned long arg)
struct sk_buff *skb;
int i, nframes;
/* Flush all previous CAB queue packets */
mt76_wr(dev, MT_WF_ARB_CAB_FLUSH, GENMASK(30, 16) | BIT(0));
data.dev = dev;
__skb_queue_head_init(&data.q);
@@ -89,6 +97,9 @@ void mt7603_pre_tbtt_tasklet(unsigned long arg)
mt76_queue_kick(dev, q);
spin_unlock_bh(&q->lock);
/* Flush all previous CAB queue packets */
mt76_wr(dev, MT_WF_ARB_CAB_FLUSH, GENMASK(30, 16) | BIT(0));
mt76_queue_tx_cleanup(dev, MT_TXQ_CAB, false);
mt76_csa_check(&dev->mt76);