From: Xin Long <lucien....@gmail.com> Date: Thu, 28 Sep 2017 13:23:31 +0800
> Without keeping dst, the tunnel will not update any mtu/pmtu info, > since it does not have a dst on the skb. > > Reproducer: > client(ipgre_tap1 - eth1) <-----> (eth1 - ipgre_tap1)server > > After reducing eth1's mtu on client, then perforamnce became 0. > > This patch is to netif_keep_dst in gre_tap_init, as ipgre does. > > Reported-by: Jianlin Shi <ji...@redhat.com> > Signed-off-by: Xin Long <lucien....@gmail.com> Applied and queued up for -stable.
