From 763ecff1879b3877f57f20fc9e79599aef59359f Mon Sep 17 00:00:00 2001
From: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Date: Wed, 15 Feb 2006 15:24:15 -0800
Subject: [PATCH] [NETFILTER]: nf_conntrack: attach conntrack to locally
generated ICMPv6 error
Locally generated ICMPv6 errors should be associated with the conntrack
of the original packet. Since the conntrack entry may not be in the hash
tables (for the first packet), it must be manually attached.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv6/icmp.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index fcf883183cefe..21eb725e885ff 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -42,6 +42,7 @@
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/init.h>
+#include <linux/netfilter.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
@@ -255,6 +256,7 @@ static int icmpv6_push_pending_frames(struct sock *sk, struct flowi *fl, struct
struct icmpv6_msg {
struct sk_buff *skb;
int offset;
+ uint8_t type;
};
static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb)
@@ -266,6 +268,8 @@ static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, st
csum = skb_copy_and_csum_bits(org_skb, msg->offset + offset,
to, len, csum);
skb->csum = csum_block_add(skb->csum, csum, odd);
+ if (!(msg->type & ICMPV6_INFOMSG_MASK))
+ nf_ct_attach(skb, org_skb);
return 0;
}
@@ -403,6 +407,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
msg.skb = skb;
msg.offset = skb->nh.raw - skb->data;
+ msg.type = type;
len = skb->len - msg.offset;
len = min_t(unsigned int, len, IPV6_MIN_MTU - sizeof(struct ipv6hdr) -sizeof(struct icmp6hdr));
@@ -500,6 +505,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
msg.skb = skb;
msg.offset = 0;
+ msg.type = ICMPV6_ECHO_REPLY;
err = ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr),
sizeof(struct icmp6hdr), hlimit, tclass, NULL, &fl,
--
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