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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-30 20:44:08 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-30 22:08:04 +0200
commitf451da609814e98834de336345bf89f18065ef0d (patch)
treec762ce923619d0c592012c31ac22e8b03007697f
parent8eb1ef076bab4bd4975922a06bdffa3d40c4197c (diff)
Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU"
This reverts commit 08a049c84408dfd0240a3340681486779c167cc8 which is 03080e5ec727 ("vti4: Don't override MTU passed on link creation via IFLA_MTU") upstream as it causes test failures. This commit should not have been backported to anything older than 4.16, despite what the changelog said as the mtu must be set in older kernels, unlike is needed in 4.16 and newer. Thanks to Alistair Strachan for the debugging help figuring this out, and for 'git bisect' for making my life a whole lot easier. Cc: Alistair Strachan <astrachan@google.com> Cc: Stefano Brivio <sbrivio@redhat.com> Cc: Sabrina Dubroca <sd@queasysnail.net> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/ipv4/ip_vti.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index a3df032522a9..c35e0aa57e66 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -365,6 +365,7 @@ static int vti_tunnel_init(struct net_device *dev)
memcpy(dev->dev_addr, &iph->saddr, 4);
memcpy(dev->broadcast, &iph->daddr, 4);
+ dev->mtu = ETH_DATA_LEN;
dev->flags = IFF_NOARP;
dev->iflink = 0;
dev->addr_len = 4;