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authorSteffen Klassert <steffen.klassert@secunet.com>2013-01-15 12:38:53 (GMT)
committerSteffen Klassert <steffen.klassert@secunet.com>2013-01-21 11:43:54 (GMT)
commit05ab86c55683410593720003442dde629782aaac (patch)
tree9a35cdd3157094965e54e63fcc58af4f1e07bb35 /net/ipv4/ah4.c
parent5b653b2a1c3b5634368fde2df958a1398481e580 (diff)
downloadlinux-05ab86c55683410593720003442dde629782aaac.tar.xz
xfrm4: Invalidate all ipv4 routes on IPsec pmtu events
On IPsec pmtu events we can't access the transport headers of the original packet, so we can't find the socket that sent the packet. The only chance to notify the socket about the pmtu change is to force a relookup for all routes. This patch implenents this for the IPsec protocols. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/ah4.c')
-rw-r--r--net/ipv4/ah4.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index a154d0a..a69b4e4 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -420,9 +420,12 @@ static void ah4_err(struct sk_buff *skb, u32 info)
if (!x)
return;
- if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
+ if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH) {
+ atomic_inc(&flow_cache_genid);
+ rt_genid_bump(net);
+
ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_AH, 0);
- else
+ } else
ipv4_redirect(skb, net, 0, 0, IPPROTO_AH, 0);
xfrm_state_put(x);
}