This patch is to add redirect icmp packet process for ip6gre by calling ip6_redirect() in ip6gre_err(), as in vti6_err.
Prior to this patch, there's even no route cache generated after receiving redirect. Reported-by: Jianlin Shi <ji...@redhat.com> Signed-off-by: Xin Long <lucien....@gmail.com> --- net/ipv6/ip6_gre.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 3e10c51..0684d0c 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -369,6 +369,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev) static void ip6gre_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); const struct gre_base_hdr *greh; const struct ipv6hdr *ipv6h; int grehlen = sizeof(*greh); @@ -442,6 +443,10 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt, mtu = IPV6_MIN_MTU; t->dev->mtu = mtu; return; + case NDISC_REDIRECT: + ip6_redirect(skb, net, skb->dev->ifindex, 0, + sock_net_uid(net, NULL)); + return; } if (time_before(jiffies, t->err_time + IP6TUNNEL_ERR_TIMEO)) -- 2.1.0