[dpdk-stable] patch 'net/bnx2x: fix FW command timeout during stop' has been queued to LTS release 17.11.4

[Yongseok Koh <yskoh@mellanox.com>]

Hi,

FYI, your patch has been queued to LTS release 17.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/15/18. So please
shout if anyone has objections.

Thanks.

Yongseok

---
>From 669b749935fad556b65f3a274183d88d42a08c55 Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rasesh.mody@cavium.com>
Date: Wed, 1 Aug 2018 11:19:20 -0700
Subject: [PATCH] net/bnx2x: fix FW command timeout during stop

[ upstream commit 4a4607bb9cadcc49a062a46588dbdcc873dfe27a ]

This patch fixes firmware command timeout error seen during device stop
while stopping queues. It patially reverts an earlier preventive change
commit 91b7e432bcef ("net/bnx2x: disable fast path interrupts") to now
enable fast path interrupts.

The original issue of performance degradation is not observed anymore,
with or without the fix.

Fixes: 91b7e432bcef ("net/bnx2x: disable fast path interrupts")

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
---
 drivers/net/bnx2x/bnx2x.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c
index 98b08d11c..cc5f28a0f 100644
--- a/drivers/net/bnx2x/bnx2x.c
+++ b/drivers/net/bnx2x/bnx2x.c
@@ -4492,6 +4492,8 @@ static void bnx2x_handle_fp_tq(struct bnx2x_fastpath *fp, int scan_fp)
 	struct bnx2x_softc *sc = fp->sc;
 	uint8_t more_rx = FALSE;
 
+	PMD_DRV_LOG(DEBUG, "---> FP TASK QUEUE (%d) <--", fp->index);
+
 	/* update the fastpath index */
 	bnx2x_update_fp_sb_idx(fp);
 
@@ -4508,7 +4510,7 @@ static void bnx2x_handle_fp_tq(struct bnx2x_fastpath *fp, int scan_fp)
 	}
 
 	bnx2x_ack_sb(sc, fp->igu_sb_id, USTORM_ID,
-		   le16toh(fp->fp_hc_idx), IGU_INT_DISABLE, 1);
+		   le16toh(fp->fp_hc_idx), IGU_INT_ENABLE, 1);
 }
 
 /*
-- 
2.11.0