diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_ecn.c')
-rw-r--r-- | net/ipv4/netfilter/ipt_ecn.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/net/ipv4/netfilter/ipt_ecn.c b/net/ipv4/netfilter/ipt_ecn.c index 37508b2cfea..26218122f86 100644 --- a/net/ipv4/netfilter/ipt_ecn.c +++ b/net/ipv4/netfilter/ipt_ecn.c @@ -1,7 +1,5 @@ /* IP tables module for matching the value of the IPv4 and TCP ECN bits * - * ipt_ecn.c,v 1.3 2002/05/29 15:09:00 laforge Exp - * * (C) 2002 by Harald Welte <laforge@gnumonks.org> * * This program is free software; you can redistribute it and/or modify @@ -11,6 +9,7 @@ #include <linux/in.h> #include <linux/ip.h> +#include <net/ip.h> #include <linux/module.h> #include <linux/skbuff.h> #include <linux/tcp.h> @@ -26,7 +25,7 @@ MODULE_LICENSE("GPL"); static inline int match_ip(const struct sk_buff *skb, const struct ipt_ecn_info *einfo) { - return ((skb->nh.iph->tos&IPT_ECN_IP_MASK) == einfo->ip_ect); + return (ip_hdr(skb)->tos & IPT_ECN_IP_MASK) == einfo->ip_ect; } static inline int match_tcp(const struct sk_buff *skb, @@ -38,8 +37,7 @@ static inline int match_tcp(const struct sk_buff *skb, /* In practice, TCP match does this, so can't fail. But let's * be good citizens. */ - th = skb_header_pointer(skb, skb->nh.iph->ihl * 4, - sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph); if (th == NULL) { *hotdrop = 0; return 0; @@ -80,7 +78,7 @@ static int match(const struct sk_buff *skb, return 0; if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) { - if (skb->nh.iph->protocol != IPPROTO_TCP) + if (ip_hdr(skb)->protocol != IPPROTO_TCP) return 0; if (!match_tcp(skb, info, hotdrop)) return 0; |