From: Michael Chan Date: Wed, 31 May 2017 00:03:00 +0000 (-0400) Subject: bnxt_en: Fix xmit_more with BQL. X-Git-Tag: pci-v4.13-fixes-1~86^2~339 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ffe406457753a7ca2061ecc8c4d3971623066911;p=users%2Fdwmw2%2Flinux.git bnxt_en: Fix xmit_more with BQL. 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: 4d172f21cefe ("bnxt_en: Implement xmit_more.") Suggested-by: Yuval Mintz Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 954758f9a177d..c1cd72a5eccf8 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -463,7 +463,7 @@ normal_tx: 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: