4 files changed, 20 insertions, 21 deletions

diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index bd50b371ffaa..c2731bfe04d8 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -60,7 +60,7 @@ typedef struct sctphdr {
         __be16 source;
         __be16 dest;
         __be32 vtag;
-        __be32 checksum;
+        __le32 checksum;
 } __attribute__((packed)) sctp_sctphdr_t;
 
 #ifdef __KERNEL__
diff --git a/include/net/sctp/checksum.h b/include/net/sctp/checksum.h
index 2fec3c366e81..befc8d2a1b9f 100644
--- a/include/net/sctp/checksum.h
+++ b/include/net/sctp/checksum.h
@@ -46,14 +46,14 @@
 #include <net/sctp/sctp.h>
 #include <linux/crc32c.h>
 
-static inline __be32 sctp_crc32c(__be32 crc, u8 *buffer, u16 length)
+static inline __u32 sctp_crc32c(__u32 crc, u8 *buffer, u16 length)
 {
-        return (__force __be32)crc32c((__force u32)crc, buffer, length);
+        return crc32c(crc, buffer, length);
 }
 
-static inline __be32 sctp_start_cksum(__u8 *buffer, __u16 length)
+static inline __u32 sctp_start_cksum(__u8 *buffer, __u16 length)
 {
-        __be32 crc = ~cpu_to_be32(0);
+        __u32 crc = ~(__u32)0;
         __u8  zero[sizeof(__u32)] = {0};
 
         /* Optimize this routine to be SCTP specific, knowing how
@@ -72,12 +72,12 @@ static inline __be32 sctp_start_cksum(__u8 *buffer, __u16 length)
         return crc;
 }
 
-static inline __be32 sctp_update_cksum(__u8 *buffer, __u16 length, __be32 crc32)
+static inline __u32 sctp_update_cksum(__u8 *buffer, __u16 length, __u32 crc32)
 {
         return sctp_crc32c(crc32, buffer, length);
 }
 
-static inline __be32 sctp_end_cksum(__be32 crc32)
+static inline __le32 sctp_end_cksum(__be32 crc32)
 {
-        return (__force __be32)~cpu_to_le32((__force u32)crc32);
+        return cpu_to_le32(~crc32);
 }
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 693fd0804810..d2e98803ffe3 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -83,14 +83,15 @@ static inline int sctp_rcv_checksum(struct sk_buff *skb)
 {
         struct sk_buff *list = skb_shinfo(skb)->frag_list;
         struct sctphdr *sh = sctp_hdr(skb);
-        __be32 cmp = sh->checksum;
-        __be32 val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
+        __le32 cmp = sh->checksum;
+        __le32 val;
+        __u32 tmp = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
 
         for (; list; list = list->next)
-                val = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
-                                        val);
+                tmp = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
+                                        tmp);
 
-        val = sctp_end_cksum(val);
+        val = sctp_end_cksum(tmp);
 
         if (val != cmp) {
                 /* CRC failure, dump it. */
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 2d65b7a7330b..07d58903a746 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -367,7 +367,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
         struct sctp_transport *tp = packet->transport;
         struct sctp_association *asoc = tp->asoc;
         struct sctphdr *sh;
-        __be32 crc32 = cpu_to_be32(0);
         struct sk_buff *nskb;
         struct sctp_chunk *chunk, *tmp;
         struct sock *sk;
@@ -532,16 +531,15 @@ int sctp_packet_transmit(struct sctp_packet *packet)
          * by CRC32-C as described in <draft-ietf-tsvwg-sctpcsum-02.txt>.
          */
         if (!sctp_checksum_disable && !(dst->dev->features & NETIF_F_NO_CSUM)) {
-                crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
-                crc32 = sctp_end_cksum(crc32);
+                __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);
         } else
                 nskb->ip_summed = CHECKSUM_UNNECESSARY;
 
-        /* 3) Put the resultant value into the checksum field in the
-         *    common header, and leave the rest of the bits unchanged.
-         */
-        sh->checksum = crc32;
-
         /* IP layer ECN support
          * From RFC 2481
          *  "The ECN-Capable Transport (ECT) bit would be set by the