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bnxt_en: Fix xmit_more with BQL.

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We need to write the doorbell if BQL has stopped the queue and
skb->xmit_more is set.  Otherwise it is possible for the tx queue to
rot and cause tx timeout.

Fixes: 4d172f21ce ("bnxt_en: Implement xmit_more.")
Suggested-by: Yuval Mintz <yuval.mintz@cavium.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2017-05-30 20:03:00 -04:00 committed by David S. Miller
parent a5c66b5726
commit ffe4064577
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -463,7 +463,7 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
prod = NEXT_TX(prod);
txr->tx_prod = prod;
if (!skb->xmit_more)
if (!skb->xmit_more || netif_xmit_stopped(txq))
bnxt_db_write(bp, txr->tx_doorbell, DB_KEY_TX | prod);
tx_done: