/* 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>
*
* published by the Free Software Foundation.
*/
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <net/ip.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/tcp.h>
+#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ipt_ecn.h>
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,
/* 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;
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;
return 1;
}
-static struct ipt_match ecn_match = {
+static struct xt_match ecn_match = {
.name = "ecn",
+ .family = AF_INET,
.match = match,
.matchsize = sizeof(struct ipt_ecn_info),
.checkentry = checkentry,
static int __init ipt_ecn_init(void)
{
- return ipt_register_match(&ecn_match);
+ return xt_register_match(&ecn_match);
}
static void __exit ipt_ecn_fini(void)
{
- ipt_unregister_match(&ecn_match);
+ xt_unregister_match(&ecn_match);
}
module_init(ipt_ecn_init);