From: Matan Azrad <matan@mellanox.com>
Date: Wed, 24 Jan 2018 10:19:17 +0000 (+0000)
Subject: net/failsafe: fix Rx burst infinite loop
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=745b72dab9a33a74f5925f2ce425fd30b21e958a

net/failsafe: fix Rx burst infinite loop

In case of plugged out device, the fail-safe PMD uses failsafe_rx_burst
function for packet receiving.

This function iterates over the present sub-devices until it
receives a traffic from one of them or they are all cannot receive
packets.

The corrupted code didn't advance the sub-device pointer when the
sub-device was not present and caused to infinite loop.

Advance the sub-device pointer also in plugged-out sub-device case.

Fixes: 8052bbd9d548 ("net/failsafe: improve Rx sub-devices iteration")

Signed-off-by: Matan Azrad <matan@mellanox.com>
Acked-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---

diff --git a/drivers/net/failsafe/failsafe_rxtx.c b/drivers/net/failsafe/failsafe_rxtx.c
index 1654494116..aeee076657 100644
--- a/drivers/net/failsafe/failsafe_rxtx.c
+++ b/drivers/net/failsafe/failsafe_rxtx.c
@@ -104,6 +104,7 @@ failsafe_rx_burst(void *queue,
 	do {
 		if (fs_rx_unsafe(sdev)) {
 			nb_rx = 0;
+			sdev = sdev->next;
 			continue;
 		}
 		sub_rxq = ETH(sdev)->data->rx_queues[rxq->qid];