X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fipv4%2Fnetfilter%2Fipt_TOS.c;h=18e74ac4d4256f566a406017c463f234e37fadaf;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=3a44a56db2397352c6b012867a9bb683dd2969f9;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/net/ipv4/netfilter/ipt_TOS.c b/net/ipv4/netfilter/ipt_TOS.c
index 3a44a56db..18e74ac4d 100644
--- a/net/ipv4/netfilter/ipt_TOS.c
+++ b/net/ipv4/netfilter/ipt_TOS.c
@@ -25,27 +25,20 @@ target(struct sk_buff **pskb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
-       const void *targinfo,
-       void *userinfo)
+       const struct xt_target *target,
+       const void *targinfo)
 {
 	const struct ipt_tos_target_info *tosinfo = targinfo;
+	struct iphdr *iph = (*pskb)->nh.iph;
 
-	if (((*pskb)->nh.iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
-		u_int16_t diffs[2];
-
+	if ((iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
+		__u8 oldtos;
 		if (!skb_make_writable(pskb, sizeof(struct iphdr)))
 			return NF_DROP;
-
-		diffs[0] = htons((*pskb)->nh.iph->tos) ^ 0xFFFF;
-		(*pskb)->nh.iph->tos
-			= ((*pskb)->nh.iph->tos & IPTOS_PREC_MASK)
-			| tosinfo->tos;
-		diffs[1] = htons((*pskb)->nh.iph->tos);
-		(*pskb)->nh.iph->check
-			= csum_fold(csum_partial((char *)diffs,
-						 sizeof(diffs),
-						 (*pskb)->nh.iph->check
-						 ^0xFFFF));
+		iph = (*pskb)->nh.iph;
+		oldtos = iph->tos;
+		iph->tos = (iph->tos & IPTOS_PREC_MASK) | tosinfo->tos;
+		nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));
 	}
 	return IPT_CONTINUE;
 }
@@ -53,24 +46,12 @@ target(struct sk_buff **pskb,
 static int
 checkentry(const char *tablename,
 	   const void *e_void,
+	   const struct xt_target *target,
            void *targinfo,
-           unsigned int targinfosize,
            unsigned int hook_mask)
 {
 	const u_int8_t tos = ((struct ipt_tos_target_info *)targinfo)->tos;
 
-	if (targinfosize != IPT_ALIGN(sizeof(struct ipt_tos_target_info))) {
-		printk(KERN_WARNING "TOS: targinfosize %u != %Zu\n",
-		       targinfosize,
-		       IPT_ALIGN(sizeof(struct ipt_tos_target_info)));
-		return 0;
-	}
-
-	if (strcmp(tablename, "mangle") != 0) {
-		printk(KERN_WARNING "TOS: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
-		return 0;
-	}
-
 	if (tos != IPTOS_LOWDELAY
 	    && tos != IPTOS_THROUGHPUT
 	    && tos != IPTOS_RELIABILITY
@@ -79,26 +60,27 @@ checkentry(const char *tablename,
 		printk(KERN_WARNING "TOS: bad tos value %#x\n", tos);
 		return 0;
 	}
-
 	return 1;
 }
 
 static struct ipt_target ipt_tos_reg = {
 	.name		= "TOS",
 	.target		= target,
+	.targetsize	= sizeof(struct ipt_tos_target_info),
+	.table		= "mangle",
 	.checkentry	= checkentry,
 	.me		= THIS_MODULE,
 };
 
-static int __init init(void)
+static int __init ipt_tos_init(void)
 {
 	return ipt_register_target(&ipt_tos_reg);
 }
 
-static void __exit fini(void)
+static void __exit ipt_tos_fini(void)
 {
 	ipt_unregister_target(&ipt_tos_reg);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(ipt_tos_init);
+module_exit(ipt_tos_fini);