sctp: remove the typedef sctp_authhdr_t

This patch is to remove the typedef sctp_authhdr_t, and
replace with struct sctp_authhdr in the places where it's
using this typedef.

It is also to use sizeof(variable) instead of sizeof(type).
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/sctp.h

@@ -693,15 +693,15 @@ struct sctp_addip_chunk {
  *   HMAC: n bytes (unsigned integer) This hold the result of the HMAC
  *      calculation.
  */
-typedef struct sctp_authhdr {
+struct sctp_authhdr {
 	__be16 shkey_id;
 	__be16 hmac_id;
 	__u8   hmac[0];
-} sctp_authhdr_t;
+};
 
 typedef struct sctp_auth_chunk {
 	struct sctp_chunkhdr chunk_hdr;
-	sctp_authhdr_t auth_hdr;
+	struct sctp_authhdr auth_hdr;
 } sctp_auth_chunk_t;
 
 struct sctp_infox {

net/sctp/sm_make_chunk.c

@@ -1282,7 +1282,7 @@ struct sctp_chunk *sctp_make_auth(const struct sctp_association *asoc)
 		return NULL;
 
 	retval = sctp_make_control(asoc, SCTP_CID_AUTH, 0,
-			hmac_desc->hmac_len + sizeof(sctp_authhdr_t),
+				   hmac_desc->hmac_len + sizeof(auth_hdr),
 				   GFP_ATOMIC);
 	if (!retval)
 		return NULL;
@@ -1290,7 +1290,7 @@ struct sctp_chunk *sctp_make_auth(const struct sctp_association *asoc)
 	auth_hdr.hmac_id = htons(hmac_desc->hmac_id);
 	auth_hdr.shkey_id = htons(asoc->active_key_id);
 
-	retval->subh.auth_hdr = sctp_addto_chunk(retval, sizeof(sctp_authhdr_t),
+	retval->subh.auth_hdr = sctp_addto_chunk(retval, sizeof(auth_hdr),
 						 &auth_hdr);
 
 	hmac = skb_put_zero(retval->skb, hmac_desc->hmac_len);