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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-08-26 12:31:19 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2013-08-26 12:40:53 +0200 |
| commit | 5a25cf1e310888eb333f9e034be84a8117111d30 (patch) | |
| tree | 0560fa869eb034e063854e42490c6556f69aa12d /net/ipv4/xfrm4_output.c | |
| parent | 844d48746e4b281a933aedc0428048a1219b42f4 (diff) | |
| download | lwn-5a25cf1e310888eb333f9e034be84a8117111d30.tar.gz lwn-5a25cf1e310888eb333f9e034be84a8117111d30.zip | |
xfrm: revert ipv4 mtu determination to dst_mtu
In commit 0ea9d5e3e0e03a63b11392f5613378977dae7eca ("xfrm: introduce
helper for safe determination of mtu") I switched the determination of
ipv4 mtus from dst_mtu to ip_skb_dst_mtu. This was an error because in
case of IP_PMTUDISC_PROBE we fall back to the interface mtu, which is
never correct for ipv4 ipsec.
This patch partly reverts 0ea9d5e3e0e03a63b11392f5613378977dae7eca
("xfrm: introduce helper for safe determination of mtu").
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/xfrm4_output.c')
| -rw-r--r-- | net/ipv4/xfrm4_output.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c index 80baf4a3b1b5..baa0f63731fd 100644 --- a/net/ipv4/xfrm4_output.c +++ b/net/ipv4/xfrm4_output.c @@ -28,7 +28,7 @@ static int xfrm4_tunnel_check_size(struct sk_buff *skb) if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df) goto out; - mtu = xfrm_skb_dst_mtu(skb); + mtu = dst_mtu(skb_dst(skb)); if (skb->len > mtu) { if (skb->sk) xfrm_local_error(skb, mtu); |