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authorTimo Teräs <timo.teras@iki.fi>2013-08-06 13:45:43 +0300
committerDavid S. Miller <davem@davemloft.net>2013-08-09 11:05:24 -0700
commit77a482bdb2e68d13fae87541b341905ba70d572b (patch)
treeba85e09ee08b8ae06c402fa08a0e1563de9d76a0 /net
parent75848d338cdecec206018e8b49fe081c624c200d (diff)
downloadop-kernel-dev-77a482bdb2e68d13fae87541b341905ba70d572b.zip
op-kernel-dev-77a482bdb2e68d13fae87541b341905ba70d572b.tar.gz
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')
-rw-r--r--net/ipv4/ip_gre.c2
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));
}
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