diff options
| author | Tom Goff <thomas.goff@boeing.com> | 2009-08-14 16:33:56 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-15 10:45:12 -0700 |
| commit | f94cae4285c03f8060daaabd77809793924c6100 (patch) | |
| tree | 7f920108568afd49d37816e16c1728ff0e61eb04 | |
| parent | 4d422a0590a44d9de3749dadb673b7b0561cc0d1 (diff) | |
gre: Fix MTU calculation for bound GRE tunnels
[ Upstream commit 8cdb045632e5ee22854538619ac6f150eb0a4894 ]
The GRE header length should be subtracted when the tunnel MTU is
calculated. This just corrects for the associativity change
introduced by commit 42aa916265d740d66ac1f17290366e9494c884c2
("gre: Move MTU setting out of ipgre_tunnel_bind_dev").
Signed-off-by: Tom Goff <thomas.goff@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -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 e62510d5ea5a..3491c93fb449 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -952,7 +952,7 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev) addend += 4; } dev->needed_headroom = addend + hlen; - mtu -= dev->hard_header_len - addend; + mtu -= dev->hard_header_len + addend; if (mtu < 68) mtu = 68; |