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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 22:25:17 +0200
commit98d69fb3b175855cdd4c37d41a4b477a0860b1a0 (patch)
tree25eec765958b1becaadc56d475febf9836f26930
parent5b90d559d4d5c8fd2127013666014595caa53ae2 (diff)
Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU"
This reverts commit d82309e24315a99a29342d330f6142122e249963 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 1ac55b116d5a..cbff0d6ff1ac 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -396,6 +396,7 @@ 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->addr_len = 4;
dev->features |= NETIF_F_LLTX;