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authorYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>2008-09-24 15:53:39 -0700
committerDavid S. Miller <davem@davemloft.net>2008-09-24 15:53:39 -0700
commit8ca31ce52a5cfd03b960fd81a49197ae85d25347 (patch)
tree741d9f22a3da1b8ff023153d52c3c22422a04a9d /net
parent5fbcd260c2c52f78cd699f65e9c7af2e60b5380c (diff)
downloadlinux-8ca31ce52a5cfd03b960fd81a49197ae85d25347.tar.bz2
netfilter: ip6t_{hbh,dst}: Rejects not-strict mode on rule insertion
The current code ignores rules for internal options in HBH/DST options header in packet processing if 'Not strict' mode is specified (which is not implemented). Clearly it is not expected by user. Kernel should reject HBH/DST rule insertion with 'Not strict' mode in the first place. 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>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/netfilter/ip6t_hbh.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/ipv6/netfilter/ip6t_hbh.c b/net/ipv6/netfilter/ip6t_hbh.c
index 62e39ace0588..26654b26d7fa 100644
--- a/net/ipv6/netfilter/ip6t_hbh.c
+++ b/net/ipv6/netfilter/ip6t_hbh.c
@@ -97,8 +97,6 @@ hbh_mt6(const struct sk_buff *skb, const struct net_device *in,
hdrlen -= 2;
if (!(optinfo->flags & IP6T_OPTS_OPTS)) {
return ret;
- } else if (optinfo->flags & IP6T_OPTS_NSTRICT) {
- pr_debug("Not strict - not implemented");
} else {
pr_debug("Strict ");
pr_debug("#%d ", optinfo->optsnr);
@@ -177,6 +175,12 @@ hbh_mt6_check(const char *tablename, const void *entry,
pr_debug("ip6t_opts: unknown flags %X\n", optsinfo->invflags);
return false;
}
+
+ if (optsinfo->flags & IP6T_OPTS_NSTRICT) {
+ pr_debug("ip6t_opts: Not strict - not implemented");
+ return false;
+ }
+
return true;
}