releases/4.13.6/ip6_gre-ip6gre_tap-device-should-keep-dst.patch

   1 From foo@baz Mon Oct  9 09:32:35 CEST 2017
   2 From: Xin Long <lucien.xin@gmail.com>
   3 Date: Thu, 28 Sep 2017 13:23:50 +0800
   4 Subject: ip6_gre: ip6gre_tap device should keep dst
   5
   6 From: Xin Long <lucien.xin@gmail.com>
   7
   8
   9 [ Upstream commit 2d40557cc702ed8e5edd9bd422233f86652d932e ]
  10
  11 The patch 'ip_gre: ipgre_tap device should keep dst' fixed
  12 a issue that ipgre_tap mtu couldn't be updated in tx path.
  13
  14 The same fix is needed for ip6gre_tap as well.
  15
  16 Signed-off-by: Xin Long <lucien.xin@gmail.com>
  17 Signed-off-by: David S. Miller <davem@davemloft.net>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19 ---
  20  net/ipv6/ip6_gre.c |    1 +
  21  1 file changed, 1 insertion(+)
  22
  23 --- a/net/ipv6/ip6_gre.c
  24 +++ b/net/ipv6/ip6_gre.c
  25 @@ -1311,6 +1311,7 @@ static void ip6gre_tap_setup(struct net_
  26         dev->features |= NETIF_F_NETNS_LOCAL;
  27         dev->priv_flags &= ~IFF_TX_SKB_SHARING;
  28         dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
  29 +       netif_keep_dst(dev);
  30  }
  31
  32  static bool ip6gre_netlink_encap_parms(struct nlattr *data[],