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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 22:11:35 +0200
commit393e9b3c30d571c2f655aa24b0dee5be9ce249b5 (patch)
parent712a231848027a1728d90784cc1f7aec6c017abd (diff)
Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU"
This reverts commit 33cebc976c3b77bdf8f3fb4478cf776131ebfe4f 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>
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index fa79e8118b9b..4b7c81f88abf 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -366,6 +366,7 @@ 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;