* ipt_ECN.c,v 1.5 2002/08/18 19:36:51 laforge Exp
*/
+#include <linux/in.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/checksum.h>
+#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ipt_ECN.h>
set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
{
struct iphdr *iph = (*pskb)->nh.iph;
- u_int16_t oldtos;
if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
+ __u8 oldtos;
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
return 0;
iph = (*pskb)->nh.iph;
oldtos = iph->tos;
iph->tos &= ~IPT_ECN_IP_MASK;
iph->tos |= (einfo->ip_ect & IPT_ECN_IP_MASK);
- iph->check = nf_csum_update(htons(oldtos) ^ htons(0xFFFF),
- htons(iph->tos), iph->check);
+ nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));
}
return 1;
}
if (einfo->operation & IPT_ECN_OP_SET_CWR)
tcph->cwr = einfo->proto.tcp.cwr;
- tcph->check = nf_proto_csum_update((*pskb),
- oldval ^ htons(0xFFFF),
- ((__be16 *)tcph)[6],
- tcph->check, 0);
+ nf_proto_csum_replace2(&tcph->check, *pskb,
+ oldval, ((__be16 *)tcph)[6], 0);
return 1;
}
if (!set_ect_tcp(pskb, einfo))
return NF_DROP;
- return IPT_CONTINUE;
+ return XT_CONTINUE;
}
static int
return 0;
}
if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR))
- && (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & IPT_INV_PROTO))) {
+ && (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & XT_INV_PROTO))) {
printk(KERN_WARNING "ECN: cannot use TCP operations on a "
"non-tcp rule\n");
return 0;
return 1;
}
-static struct ipt_target ipt_ecn_reg = {
+static struct xt_target ipt_ecn_reg = {
.name = "ECN",
+ .family = AF_INET,
.target = target,
.targetsize = sizeof(struct ipt_ECN_info),
.table = "mangle",
static int __init ipt_ecn_init(void)
{
- return ipt_register_target(&ipt_ecn_reg);
+ return xt_register_target(&ipt_ecn_reg);
}
static void __exit ipt_ecn_fini(void)
{
- ipt_unregister_target(&ipt_ecn_reg);
+ xt_unregister_target(&ipt_ecn_reg);
}
module_init(ipt_ecn_init);