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vti4: Don't count header length twice. 

commit a32452366b7250c42e96a18ffc3ad8db9e0ca3c2 upstream.

We currently count the size of LL_MAX_HEADER and struct iphdr
twice for vti4 devices, this leads to a wrong device mtu.
The size of LL_MAX_HEADER and struct iphdr is already counted in
ip_tunnel_bind_dev(), so don't do it again in vti_tunnel_init().

Fixes: b9959fd3 ("vti: switch to new ip tunnel code")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Steffen Klassert 2014-04-16 09:01:03 +02:00 committed by syphyr
parent ef730cc750
commit 285bc38bf9
1 changed files with 0 additions and 1 deletions
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net/ipv4/ip_vti.c
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@ -582,7 +582,6 @@ static void vti_tunnel_setup(struct net_device *dev)
dev->type = ARPHRD_TUNNEL;
dev->destructor = vti_dev_free;
dev->hard_header_len = LL_MAX_HEADER + sizeof(struct iphdr);
dev->mtu = ETH_DATA_LEN;
dev->flags = IFF_NOARP;
dev->iflink = 0;