openvswitch-Set-internal-device-max-mtu-to-ETH_MAX_M.patch

   1 From 425df17ce3a26d98f76e2b6b0af2acf4aeb0b026 Mon Sep 17 00:00:00 2001
   2 From: Jarno Rajahalme <jarno@ovn.org>
   3 Date: Tue, 14 Feb 2017 21:16:28 -0800
   4 Subject: [PATCH] openvswitch: Set internal device max mtu to ETH_MAX_MTU.
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Commit 91572088e3fd ("net: use core MTU range checking in core net
  10 infra") changed the openvswitch internal device to use the core net
  11 infra for controlling the MTU range, but failed to actually set the
  12 max_mtu as described in the commit message, which now defaults to
  13 ETH_DATA_LEN.
  14
  15 This patch fixes this by setting max_mtu to ETH_MAX_MTU after
  16 ether_setup() call.
  17
  18 Fixes: 91572088e3fd ("net: use core MTU range checking in core net infra")
  19 Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
  20 Signed-off-by: David S. Miller <davem@davemloft.net>
  21 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  22 ---
  23  net/openvswitch/vport-internal_dev.c | 2 ++
  24  1 file changed, 2 insertions(+)
  25
  26 diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c
  27 index 09141a1..89193a6 100644
  28 --- a/net/openvswitch/vport-internal_dev.c
  29 +++ b/net/openvswitch/vport-internal_dev.c
  30 @@ -149,6 +149,8 @@ static void do_setup(struct net_device *netdev)
  31  {
  32         ether_setup(netdev);
  33
  34 +       netdev->max_mtu = ETH_MAX_MTU;
  35 +
  36         netdev->netdev_ops = &internal_dev_netdev_ops;
  37
  38         netdev->priv_flags &= ~IFF_TX_SKB_SHARING;
  39 --
  40 2.1.4
  41