[SCTP] Removed SCTP specific rmem/wmem sysctl's and use the global

       rmem_default/wmem_default values for SCTP socket buffer sizes.

include/net/sctp/structs.h

@@ -193,10 +193,6 @@ extern struct sctp_globals {
 	
 	/* Flag to indicate if addip is enabled. */
 	int addip_enable;
-
-	/* socket receive and send buffer sizes. */ 
-	int rmem;
-	int wmem;
 } sctp_globals;
 
 #define sctp_rto_initial		(sctp_globals.rto_initial)
@@ -225,8 +221,6 @@ extern struct sctp_globals {
 #define sctp_local_addr_list		(sctp_globals.local_addr_list)
 #define sctp_local_addr_lock		(sctp_globals.local_addr_lock)
 #define sctp_addip_enable		(sctp_globals.addip_enable)
-#define sctp_rmem			(sctp_globals.rmem)
-#define sctp_wmem			(sctp_globals.wmem)
 
 /* SCTP Socket type: UDP or TCP style. */
 typedef enum {

net/sctp/associola.c

@@ -192,7 +192,7 @@ struct sctp_association *sctp_association_init(struct sctp_association *asoc,
 	asoc->rwnd_over = 0;
 
 	/* Use my own max window until I learn something better.  */
-	asoc->peer.rwnd = sctp_rmem;
+	asoc->peer.rwnd = SCTP_DEFAULT_MAXWINDOW;
 
 	/* Set the sndbuf size for transmit.  */
 	asoc->sndbuf_used = 0;
@@ -498,7 +498,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
 	 * so initialize ssthresh to the default value and it will be set
 	 * later when we process the INIT.
 	 */
-	peer->ssthresh = sctp_rmem;
+	peer->ssthresh = SCTP_DEFAULT_MAXWINDOW;
 
 	peer->partial_bytes_acked = 0;
 	peer->flight_size = 0;

net/sctp/endpointola.c

@@ -147,10 +147,6 @@ struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 	ep->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
 		sp->autoclose * HZ;
 
-	/* Set up the default send/receive buffer space.  */
-	sk->sk_rcvbuf = sctp_rmem;
-	sk->sk_sndbuf = sctp_wmem;
-
 	/* Use SCTP specific send buffer space queues.  */
 	sk->sk_write_space = sctp_write_space;
 	sk->sk_use_write_queue = 1;

net/sctp/protocol.c

@@ -1049,10 +1049,6 @@ __init int sctp_init(void)
 	sctp_max_instreams    		= SCTP_DEFAULT_INSTREAMS;
 	sctp_max_outstreams   		= SCTP_DEFAULT_OUTSTREAMS;
 
-	/* Initialize default send & receive buffer sizes. */
-	sctp_rmem 			= SCTP_DEFAULT_MAXWINDOW;
-	sctp_wmem 			= SCTP_DEFAULT_MAXWINDOW;
-
 	/* Size and allocate the association hash table.
 	 * The methodology is similar to that of the tcp hash tables.
 	 */

net/sctp/sysctl.c

@@ -170,22 +170,6 @@ static ctl_table sctp_table[] = {
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
 	},
-	{
-		.ctl_name	= NET_SCTP_RMEM,
-		.procname	= "rmem",
-		.data		= &sctp_rmem,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= &proc_dointvec
-	},
-	{
-		.ctl_name	= NET_SCTP_WMEM,
-		.procname	= "wmem",
-		.data		= &sctp_wmem,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= &proc_dointvec
-	},
 	{ .ctl_name = 0 }
 };
 

net/sctp/ulpqueue.c

@@ -768,7 +768,7 @@ void sctp_ulpq_renege(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk,
 		needed = ntohs(chunk->chunk_hdr->length);
 		needed -= sizeof(sctp_data_chunk_t);
 	} else 
-		needed = sctp_rmem;
+		needed = SCTP_DEFAULT_MAXWINDOW;
 
 	freed = 0;