From mboxrd@z Thu Jan 1 00:00:00 1970 From: Duan Jiong Subject: [PATCH]ipv6: Add an ICMP error handler icmpv6_err Date: Tue, 23 Oct 2012 23:24:29 +0800 Message-ID: <5086B6AD.8060306@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: davem@davemloft.net Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:46333 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755495Ab2JWPYe (ORCPT ); Tue, 23 Oct 2012 11:24:34 -0400 Received: by mail-pb0-f46.google.com with SMTP id rr4so507107pbb.19 for ; Tue, 23 Oct 2012 08:24:33 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: Add an ICMP error handler icmpv6_err to deal with ICMPV6 Error Messages and Redirect Message, when we do not have a socket context. Signed-off-by: Duan Jiong --- net/ipv6/icmp.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 24d69db..d3cb61d 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -82,9 +82,12 @@ static inline struct sock *icmpv6_sk(struct net *net) } static int icmpv6_rcv(struct sk_buff *skb); +static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, + u8 type, u8 code, int offset, __be32 info); static const struct inet6_protocol icmpv6_protocol = { .handler = icmpv6_rcv, + .err_handler = icmpv6_err, .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, }; @@ -782,6 +785,26 @@ drop_no_count: return 0; } +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); + struct icmp6hdr *hdr = icmp6_hdr(skb); + + switch (hdr->icmp6_type) { + case ICMPV6_PKT_TOOBIG: + ip6_update_pmtu(skb, net, info, 0, 0); + break; + + case NDISC_REDIRECT: + ip6_redirect(skb, net, 0, 0); + break; + + default: + break; + } +} + void icmpv6_flow_init(struct sock *sk, struct flowi6 *fl6, u8 type, const struct in6_addr *saddr, -- 1.7.11.4