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| author | Timo Teräs <timo.teras@iki.fi> | 2013-08-06 10:45:43 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-09 18:05:24 (GMT) |
| commit | 77a482bdb2e68d13fae87541b341905ba70d572b (patch) | |
| tree | ba85e09ee08b8ae06c402fa08a0e1563de9d76a0 /net/ipv4 | |
| parent | 75848d338cdecec206018e8b49fe081c624c200d (diff) | |
| download | linux-77a482bdb2e68d13fae87541b341905ba70d572b.tar.xz | |
ip_gre: fix ipgre_header to return correct offset
Fix ipgre_header() (header_ops->create) to return the correct
amount of bytes pushed. Most callers of dev_hard_header() seem
to care only if it was success, but af_packet.c uses it as
offset to the skb to copy from userspace only once. In practice
this fixes packet socket sendto()/sendmsg() to gre tunnels.
Regression introduced in c54419321455631079c7d6e60bc732dd0c5914c5
("GRE: Refactor GRE tunneling code.")
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_gre.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 1f6eab6..8d6939e 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -383,7 +383,7 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev, if (daddr) memcpy(&iph->daddr, daddr, 4); if (iph->daddr) - return t->hlen; + return t->hlen + sizeof(*iph); return -(t->hlen + sizeof(*iph)); } |