Patch "geneve: Fix function matching VNI and tunnel ID on big-endian" has been added to the 4.13-stable tree

Patch "geneve: Fix function matching VNI and tunnel ID on big-endian" has been added to the 4.13-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    geneve: Fix function matching VNI and tunnel ID on big-endian

to the 4.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     geneve-fix-function-matching-vni-and-tunnel-id-on-big-endian.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Wed Nov 15 17:25:34 CET 2017
From: Stefano Brivio <sbrivio@redhat.com>
Date: Thu, 19 Oct 2017 13:31:28 +0200
Subject: geneve: Fix function matching VNI and tunnel ID on big-endian

From: Stefano Brivio <sbrivio@redhat.com>


[ Upstream commit 772e97b57a4aa00170ad505a40ffad31d987ce1d ]

On big-endian machines, functions converting between tunnel ID
and VNI use the three LSBs of tunnel ID storage to map VNI.

The comparison function eq_tun_id_and_vni(), on the other hand,
attempted to map the VNI from the three MSBs. Fix it by using
the same check implemented on LE, which maps VNI from the three
LSBs of tunnel ID.

Fixes: 2e0b26e10352 ("geneve: Optimize geneve device lookup.")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Jakub Sitnicki <jkbs@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/geneve.c |    6 ------
 1 file changed, 6 deletions(-)

--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -113,13 +113,7 @@ static void tunnel_id_to_vni(__be64 tun_
 
 static bool eq_tun_id_and_vni(u8 *tun_id, u8 *vni)
 {
-#ifdef __BIG_ENDIAN
-	return (vni[0] == tun_id[2]) &&
-	       (vni[1] == tun_id[1]) &&
-	       (vni[2] == tun_id[0]);
-#else
 	return !memcmp(vni, &tun_id[5], 3);
-#endif
 }
 
 static sa_family_t geneve_get_sk_family(struct geneve_sock *gs)


Patches currently in stable-queue which might be from sbrivio@redhat.com are

queue-4.13/geneve-fix-function-matching-vni-and-tunnel-id-on-big-endian.patch