From: Michael Chan <michael.chan@broadcom.com>
Date: Tue, 30 May 2017 20:03:00 -0400
Subject: bnxt_en: Fix xmit_more with BQL.
Patch-mainline: v4.13-rc1
Git-commit: ffe406457753a7ca2061ecc8c4d3971623066911
References: bsc#1050242 FATE#322914
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 <yuval.mintz@cavium.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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: