diff options
| author |   Patrick McHardy <kaber@trash.net> | 2006-05-29 18:21:53 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-06-17 21:28:55 -0700 |
| commit | 6442f1cf897643d4ca597f2f7d3464b765bae960 (patch) | |
| tree | 0708a7d312c1db1f78c20df9cbdfc9f5e6218523 | |
| parent | [NETFILTER]: recent match: replace by rewritten version (diff) | |
| download | linux-dev-6442f1cf897643d4ca597f2f7d3464b765bae960.tar.xz linux-dev-6442f1cf897643d4ca597f2f7d3464b765bae960.zip | |
[NETFILTER]: conntrack: don't call helpers for related ICMP messages
None of the existing helpers expects to get called for related ICMP
packets and some even drop them if they can't parse them.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_standalone.c | 2 | ||||
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 2 | ||||
| -rw-r--r-- | net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c index 929d61f7be91..f0cc7feb0da3 100644 --- a/net/ipv4/netfilter/ip_conntrack_standalone.c +++ b/net/ipv4/netfilter/ip_conntrack_standalone.c @@ -417,7 +417,7 @@ static unsigned int ip_conntrack_help(unsigned int hooknum, /* This is where we call the helper: as the packet goes out. */ ct = ip_conntrack_get(*pskb, &ctinfo); - if (ct && ct->helper) { + if (ct && ct->helper && ctinfo != IP_CT_RELATED + IP_CT_IS_REPLY) { unsigned int ret; ret = ct->helper->help(pskb, ct, ctinfo); if (ret != NF_ACCEPT) diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 77d974443c7b..8cc8e1b36778 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -145,7 +145,7 @@ static unsigned int ipv4_conntrack_help(unsigned int hooknum, /* This is where we call the helper: as the packet goes out. */ ct = nf_ct_get(*pskb, &ctinfo); - if (!ct) + if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY) return NF_ACCEPT; help = nfct_help(ct); diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c index 93bae36f2663..2a71c3b669f1 100644 --- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c +++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c @@ -189,7 +189,7 @@ static unsigned int ipv6_confirm(unsigned int hooknum, /* This is where we call the helper: as the packet goes out. */ ct = nf_ct_get(*pskb, &ctinfo); - if (!ct) + if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY) goto out; help = nfct_help(ct); |