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| author | Patrick McHardy <kaber@trash.net> | 2011-06-16 19:24:17 +0400 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2011-06-16 19:24:17 +0400 |
| commit | 58d5a0257d2fd89fbe4451f704193cc95b0a9c97 (patch) | |
| tree | 63ed637719b75c9b3476c360ef14662df3703a75 | |
| parent | 63f6fe92c6b3cbf4c0bbbea4b31fdd3d68e21e4d (diff) | |
| download | linux-58d5a0257d2fd89fbe4451f704193cc95b0a9c97.tar.xz | |
netfilter: ipt_ecn: fix protocol check in ecn_mt_check()
Check for protocol inversion in ecn_mt_check() and remove the
unnecessary runtime check for IPPROTO_TCP in ecn_mt().
Signed-off-by: Patrick McHardy <kaber@trash.net>
| -rw-r--r-- | net/ipv4/netfilter/ipt_ecn.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ipv4/netfilter/ipt_ecn.c b/net/ipv4/netfilter/ipt_ecn.c index af6e9c778345..aaa85be1b2d8 100644 --- a/net/ipv4/netfilter/ipt_ecn.c +++ b/net/ipv4/netfilter/ipt_ecn.c @@ -76,8 +76,6 @@ static bool ecn_mt(const struct sk_buff *skb, struct xt_action_param *par) return false; if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) { - if (ip_hdr(skb)->protocol != IPPROTO_TCP) - return false; if (!match_tcp(skb, info, &par->hotdrop)) return false; } @@ -97,7 +95,7 @@ static int ecn_mt_check(const struct xt_mtchk_param *par) return -EINVAL; if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR) && - ip->proto != IPPROTO_TCP) { + (ip->proto != IPPROTO_TCP || ip->invflags & IPT_INV_PROTO)) { pr_info("cannot match TCP bits in rule for non-tcp packets\n"); return -EINVAL; } |