X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Fnetfilter%2Fipvs%2Fip_vs_proto_sctp.c;h=23e596e438b3fb4e51a97782c4cf00ad7d33af68;hb=b14662cae0f765355d43357180f4c34916610269;hp=3c0da8728036346a6a9ba235821779b49931b311;hpb=9663398a094e3b85415e27fe6047b067f5f81f99;p=karo-tx-linux.git

diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 3c0da8728036..23e596e438b3 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -66,15 +66,7 @@ sctp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
 static void sctp_nat_csum(struct sk_buff *skb, sctp_sctphdr_t *sctph,
 			  unsigned int sctphoff)
 {
-	__u32 crc32;
-	struct sk_buff *iter;
-
-	crc32 = sctp_start_cksum((__u8 *)sctph, skb_headlen(skb) - sctphoff);
-	skb_walk_frags(skb, iter)
-		crc32 = sctp_update_cksum((u8 *) iter->data,
-					  skb_headlen(iter), crc32);
-	sctph->checksum = sctp_end_cksum(crc32);
-
+	sctph->checksum = sctp_compute_cksum(skb, sctphoff);
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 }
 
@@ -151,10 +143,7 @@ sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
 {
 	unsigned int sctphoff;
 	struct sctphdr *sh, _sctph;
-	struct sk_buff *iter;
-	__le32 cmp;
-	__le32 val;
-	__u32 tmp;
+	__le32 cmp, val;
 
 #ifdef CONFIG_IP_VS_IPV6
 	if (af == AF_INET6)
@@ -168,13 +157,7 @@ sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
 		return 0;
 
 	cmp = sh->checksum;
-
-	tmp = sctp_start_cksum((__u8 *) sh, skb_headlen(skb));
-	skb_walk_frags(skb, iter)
-		tmp = sctp_update_cksum((__u8 *) iter->data,
-					skb_headlen(iter), tmp);
-
-	val = sctp_end_cksum(tmp);
+	val = sctp_compute_cksum(skb, sctphoff);
 
 	if (val != cmp) {
 		/* CRC failure, dump it. */