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authorSteffen Klassert <steffen.klassert@secunet.com>2013-01-16 22:09:49 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-18 14:19:42 -0500
commit6f809da27c94425e07be4a64d5093e1df95188e9 (patch)
tree310ff07e313e0e54aebc308a8736cd4c5f827d1f /net
parentd6fb3be544b46a7611a3373fcaa62b5b0be01888 (diff)
downloadop-kernel-dev-6f809da27c94425e07be4a64d5093e1df95188e9.zip
op-kernel-dev-6f809da27c94425e07be4a64d5093e1df95188e9.tar.gz
ipv6: Add an error handler for icmp6
pmtu and redirect events are now handled in the protocols error handler, so add an error handler for icmp6 to do this. It is needed in the case when we have no socket context. Based on a patch by Duan Jiong. Reported-by: Duan Jiong <djduanjiong@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/icmp.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index b4a9fd5..fff5bdd 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -81,10 +81,22 @@ static inline struct sock *icmpv6_sk(struct net *net)
return net->ipv6.icmp_sk[smp_processor_id()];
}
+static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+ u8 type, u8 code, int offset, __be32 info)
+{
+ struct net *net = dev_net(skb->dev);
+
+ if (type == ICMPV6_PKT_TOOBIG)
+ ip6_update_pmtu(skb, net, info, 0, 0);
+ else if (type == NDISC_REDIRECT)
+ ip6_redirect(skb, net, 0, 0);
+}
+
static int icmpv6_rcv(struct sk_buff *skb);
static const struct inet6_protocol icmpv6_protocol = {
.handler = icmpv6_rcv,
+ .err_handler = icmpv6_err,
.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
};
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