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authorYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>2005-11-09 13:02:45 -0800
committerDavid S. Miller <davem@davemloft.net>2005-11-09 13:02:45 -0800
commitd63a92810807e8da298895236f2b99697e884014 (patch)
treed687ea375c969fb220cc6fbb82b28ae51524b07b /net
parented77de9fc69076e6e7c85edf7c1b70650f53121a (diff)
downloadlinux-d63a92810807e8da298895236f2b99697e884014.tar.bz2
[NETFILTER]: stop tracking ICMP error at early point
Currently connection tracking handles ICMP error like normal packets if it failed to get related connection. But it fails that after all. This makes connection tracking stop tracking ICMP error at early point. Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/ip_conntrack_proto_icmp.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
index 98f0015dd255..9481d159acb6 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
@@ -151,13 +151,13 @@ icmp_error_message(struct sk_buff *skb,
/* Not enough header? */
inside = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_in), &_in);
if (inside == NULL)
- return NF_ACCEPT;
+ return -NF_ACCEPT;
/* Ignore ICMP's containing fragments (shouldn't happen) */
if (inside->ip.frag_off & htons(IP_OFFSET)) {
DEBUGP("icmp_error_track: fragment of proto %u\n",
inside->ip.protocol);
- return NF_ACCEPT;
+ return -NF_ACCEPT;
}
innerproto = ip_conntrack_proto_find_get(inside->ip.protocol);
@@ -166,7 +166,7 @@ icmp_error_message(struct sk_buff *skb,
if (!ip_ct_get_tuple(&inside->ip, skb, dataoff, &origtuple, innerproto)) {
DEBUGP("icmp_error: ! get_tuple p=%u", inside->ip.protocol);
ip_conntrack_proto_put(innerproto);
- return NF_ACCEPT;
+ return -NF_ACCEPT;
}
/* Ordinarily, we'd expect the inverted tupleproto, but it's
@@ -174,7 +174,7 @@ icmp_error_message(struct sk_buff *skb,
if (!ip_ct_invert_tuple(&innertuple, &origtuple, innerproto)) {
DEBUGP("icmp_error_track: Can't invert tuple\n");
ip_conntrack_proto_put(innerproto);
- return NF_ACCEPT;
+ return -NF_ACCEPT;
}
ip_conntrack_proto_put(innerproto);
@@ -190,7 +190,7 @@ icmp_error_message(struct sk_buff *skb,
if (!h) {
DEBUGP("icmp_error_track: no match\n");
- return NF_ACCEPT;
+ return -NF_ACCEPT;
}
/* Reverse direction from that found */
if (DIRECTION(h) != IP_CT_DIR_REPLY)