[SCTP]: Introduce sctp_hdr()

For consistency with all the other skb->h.raw accessors.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 9 deletions

diff --git a/net/sctp/input.c b/net/sctp/input.c
index 9311b5ddf5c..3a322c584c7 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -79,14 +79,10 @@ static void sctp_add_backlog(struct sock *sk, struct sk_buff *skb);
 /* Calculate the SCTP checksum of an SCTP packet.  */
 static inline int sctp_rcv_checksum(struct sk_buff *skb)
 {
-        struct sctphdr *sh;
-        __u32 cmp, val;
         struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
-        sh = (struct sctphdr *) skb->h.raw;
-        cmp = ntohl(sh->checksum);
-
-        val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
+        struct sctphdr *sh = sctp_hdr(skb);
+        __u32 cmp = ntohl(sh->checksum);
+        __u32 val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
 
         for (; list; list = list->next)
                 val = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
@@ -138,7 +134,7 @@ int sctp_rcv(struct sk_buff *skb)
         if (skb_linearize(skb))
                 goto discard_it;
 
-        sh = (struct sctphdr *) skb->h.raw;
+        sh = sctp_hdr(skb);
 
         /* Pull up the IP and SCTP headers. */
         __skb_pull(skb, skb_transport_offset(skb));
@@ -905,7 +901,7 @@ static struct sctp_association *__sctp_rcv_init_lookup(struct sk_buff *skb,
         struct sctp_association *asoc;
         union sctp_addr addr;
         union sctp_addr *paddr = &addr;
-        struct sctphdr *sh = (struct sctphdr *) skb->h.raw;
+        struct sctphdr *sh = sctp_hdr(skb);
         sctp_chunkhdr_t *ch;
         union sctp_params params;
         sctp_init_chunk_t *init;