netfilter: ip6table_raw: fix table priority
Jozsef Kadlecsik [Thu, 25 Mar 2010 10:17:26 +0000 (11:17 +0100)]
The order of the IPv6 raw table is currently reversed, that makes impossible
to use the NOTRACK target in IPv6: for example if someone enters

ip6tables -t raw -A PREROUTING -p tcp --dport 80 -j NOTRACK

and if we receive fragmented packets then the first fragment will be
untracked and thus skip nf_ct_frag6_gather (and conntrack), while all
subsequent fragments enter nf_ct_frag6_gather and reassembly will never
successfully be finished.

Singed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>

include/linux/netfilter_ipv6.h
net/ipv6/netfilter/ip6table_raw.c

index d654873..1f7e300 100644 (file)
@@ -59,6 +59,7 @@
 enum nf_ip6_hook_priorities {
        NF_IP6_PRI_FIRST = INT_MIN,
        NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
+       NF_IP6_PRI_RAW = -300,
        NF_IP6_PRI_SELINUX_FIRST = -225,
        NF_IP6_PRI_CONNTRACK = -200,
        NF_IP6_PRI_MANGLE = -150,
index aef31a2..b9cf7cd 100644 (file)
@@ -13,7 +13,7 @@ static const struct xt_table packet_raw = {
        .valid_hooks = RAW_VALID_HOOKS,
        .me = THIS_MODULE,
        .af = NFPROTO_IPV6,
-       .priority = NF_IP6_PRI_FIRST,
+       .priority = NF_IP6_PRI_RAW,
 };
 
 /* The work comes in here from netfilter.c. */