netdev - [net PATCH] net: Fix a bug in removing queues from XPS map

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Message-ID: <152659384481.2834.5040004714298449412.stgit@anamdev.jf.intel.com>
Date:   Thu, 17 May 2018 14:50:44 -0700
From:   Amritha Nambiar <amritha.nambiar@...el.com>
To:     netdev@...r.kernel.org, davem@...emloft.net
Cc:     alexander.h.duyck@...el.com, f.fainelli@...il.com,
        amritha.nambiar@...el.com, sridhar.samudrala@...el.com,
        edumazet@...gle.com, hannes@...essinduktion.org,
        tom@...bertland.com
Subject: [net PATCH] net: Fix a bug in removing queues from XPS map

While removing queues from the XPS map, the individual CPU ID
alone was used to index the CPUs map, this should be changed to also
factor in the traffic class mapping for the CPU-to-queue lookup.

Fixes: 184c449f91fe ("net: Add support for XPS with QoS via traffic classes")
Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com>
Acked-by: Alexander Duyck <alexander.h.duyck@...el.com>
---
 net/core/dev.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 9f43901..9397577 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2125,7 +2125,7 @@ static bool remove_xps_queue_cpu(struct net_device *dev,
 		int i, j;
 
 		for (i = count, j = offset; i--; j++) {
-			if (!remove_xps_queue(dev_maps, cpu, j))
+			if (!remove_xps_queue(dev_maps, tci, j))
 				break;
 		}