sctp: remove the typedef sctp_sack_variable_t

This patch is to remove the typedef sctp_sack_variable_t, and
replace with union sctp_sack_variable in the places where it's
using this typedef.

It is also to fix some indents in sctp_acked().
Signed-off-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/sctp.h

@@ -368,17 +368,17 @@ struct sctp_gap_ack_block {
 	__be16 end;
 };
 
-typedef union {
+union sctp_sack_variable {
 	struct sctp_gap_ack_block gab;
 	__be32 dup;
-} sctp_sack_variable_t;
+};
 
 typedef struct sctp_sackhdr {
 	__be32 cum_tsn_ack;
 	__be32 a_rwnd;
 	__be16 num_gap_ack_blocks;
 	__be16 num_dup_tsns;
-	sctp_sack_variable_t variable[0];
+	union sctp_sack_variable variable[0];
 } sctp_sackhdr_t;
 
 typedef struct sctp_sack_chunk {

net/sctp/outqueue.c

@@ -1197,7 +1197,7 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
 static void sctp_sack_update_unack_data(struct sctp_association *assoc,
 					struct sctp_sackhdr *sack)
 {
-	sctp_sack_variable_t *frags;
+	union sctp_sack_variable *frags;
 	__u16 unack_data;
 	int i;
 
@@ -1224,7 +1224,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
 	struct sctp_transport *transport;
 	struct sctp_chunk *tchunk = NULL;
 	struct list_head *lchunk, *transport_list, *temp;
-	sctp_sack_variable_t *frags = sack->variable;
+	union sctp_sack_variable *frags = sack->variable;
 	__u32 sack_ctsn, ctsn, tsn;
 	__u32 highest_tsn, highest_new_tsn;
 	__u32 sack_a_rwnd;
@@ -1736,10 +1736,10 @@ static void sctp_mark_missing(struct sctp_outq *q,
 /* Is the given TSN acked by this packet?  */
 static int sctp_acked(struct sctp_sackhdr *sack, __u32 tsn)
 {
-	int i;
-	sctp_sack_variable_t *frags;
-	__u16 tsn_offset, blocks;
 	__u32 ctsn = ntohl(sack->cum_tsn_ack);
+	union sctp_sack_variable *frags;
+	__u16 tsn_offset, blocks;
+	int i;
 
 	if (TSN_lte(tsn, ctsn))
 		goto pass;