ipv6: Add an error handler for icmp6 (6f809da2) · Commits · 戴 / test

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>

net/ipv6/icmp.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -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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