Patch "vxlan: Accept user specified MTU value when create new vxlan link" has been added to the 4.4-stable tree

Patch "vxlan: Accept user specified MTU value when create new vxlan link" has been added to the 4.4-stable tree

[gregkh]

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

    vxlan: Accept user specified MTU value when create new vxlan link

to the 4.4-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:
     vxlan-accept-user-specified-mtu-value-when-create-new-vxlan-link.patch
and it can be found in the queue-4.4 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 Fri Jun 17 11:18:18 PDT 2016
From: Chen Haiquan <oc@yunify.com>
Date: Fri, 27 May 2016 10:49:11 +0800
Subject: vxlan: Accept user specified MTU value when create new vxlan link

From: Chen Haiquan <oc@yunify.com>

[ Upstream commit ce577668a426c6a9e2470a09dcd07fbd6e45272a ]

When create a new vxlan link, example:
  ip link add vtap mtu 1440 type vxlan vni 1 dev eth0

The argument "mtu" has no effect, because it is not set to conf->mtu. The
default value is used in vxlan_dev_configure function.

This problem was introduced by commit 0dfbdf4102b9 (vxlan: Factor out device
configuration).

Fixes: 0dfbdf4102b9 (vxlan: Factor out device configuration)
Signed-off-by:  Chen Haiquan <oc@yunify.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/vxlan.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2985,6 +2985,9 @@ static int vxlan_newlink(struct net *src
 	if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
 		conf.flags |= VXLAN_F_REMCSUM_NOPARTIAL;
 
+	if (tb[IFLA_MTU])
+		conf.mtu = nla_get_u32(tb[IFLA_MTU]);
+
 	err = vxlan_dev_configure(src_net, dev, &conf);
 	switch (err) {
 	case -ENODEV:


Patches currently in stable-queue which might be from oc@yunify.com are

queue-4.4/vxlan-accept-user-specified-mtu-value-when-create-new-vxlan-link.patch