1 files changed, 1 insertions, 8 deletions

diff --git a/net/sctp/output.c b/net/sctp/output.c
index 319137340d15..e650978daf27 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -390,7 +390,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         __u8 has_data = 0;
         struct dst_entry *dst = tp->dst;
         unsigned char *auth = NULL;     /* pointer to auth in skb data */
-        __u32 cksum_buf_len = sizeof(struct sctphdr);
 
         pr_debug("%s: packet:%p\n", __func__, packet);
 
@@ -493,7 +492,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                 if (chunk == packet->auth)
                         auth = skb_tail_pointer(nskb);
 
-                cksum_buf_len += chunk->skb->len;
                 memcpy(skb_put(nskb, chunk->skb->len),
                                chunk->skb->data, chunk->skb->len);
 
@@ -538,12 +536,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         if (!sctp_checksum_disable) {
                 if (!(dst->dev->features & NETIF_F_SCTP_CSUM) ||
                     (dst_xfrm(dst) != NULL) || packet->ipfragok) {
-                        __u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
-
-                        /* 3) Put the resultant value into the checksum field in the
-                         *    common header, and leave the rest of the bits unchanged.
-                         */
-                        sh->checksum = sctp_end_cksum(crc32);
+                        sh->checksum = sctp_compute_cksum(nskb, 0);
                 } else {
                         /* no need to seed pseudo checksum for SCTP */
                         nskb->ip_summed = CHECKSUM_PARTIAL;