[3.13.y.z extended stable] Patch "net: mvneta: Fix big endian issue in mvneta_txq_desc_csum()" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    net: mvneta: Fix big endian issue in mvneta_txq_desc_csum()

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.6.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 8c5e81674e87a87a41025fb226b3213bb0f80846 Mon Sep 17 00:00:00 2001
From: Thomas Fitzsimmons <fitzsim at fitzsim.org>
Date: Tue, 8 Jul 2014 19:44:07 -0400
Subject: net: mvneta: Fix big endian issue in mvneta_txq_desc_csum()

commit 0a1985879437d14bda8c90d0dae3455c467d7642 upstream.

This commit fixes the command value generated for CSUM calculation
when running in big endian mode.  The Ethernet protocol ID for IP was
being unconditionally byte-swapped in the layer 3 protocol check (with
swab16), which caused the mvneta driver to not function correctly in
big endian mode.  This patch byte-swaps the ID conditionally with
htons.

Signed-off-by: Thomas Fitzsimmons <fitzsim at fitzsim.org>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/net/ethernet/marvell/mvneta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 1c8dd19..89c85b7 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1212,7 +1212,7 @@ static u32 mvneta_txq_desc_csum(int l3_offs, int l3_proto,
 	command =  l3_offs    << MVNETA_TX_L3_OFF_SHIFT;
 	command |= ip_hdr_len << MVNETA_TX_IP_HLEN_SHIFT;

-	if (l3_proto == swab16(ETH_P_IP))
+	if (l3_proto == htons(ETH_P_IP))
 		command |= MVNETA_TXD_IP_CSUM;
 	else
 		command |= MVNETA_TX_L3_IP6;
--
1.9.1