rxrpc: Split sendmsg from packet transmission code

Split the sendmsg code from the packet transmission code (mostly to be
found in output.c).

Signed-off-by: David Howells <dhowells@redhat.com>

net/rxrpc/Makefile

@@ -22,6 +22,7 @@ af-rxrpc-y := \
 	peer_object.o \
 	recvmsg.o \
 	security.o \
+	sendmsg.o \
 	skbuff.o \
 	utils.o
 

net/rxrpc/ar-internal.h

@@ -814,6 +814,7 @@ extern unsigned int rxrpc_idle_ack_delay;
 extern unsigned int rxrpc_rx_window_size;
 extern unsigned int rxrpc_rx_mtu;
 extern unsigned int rxrpc_rx_jumbo_max;
+extern unsigned int rxrpc_resend_timeout;
 
 extern const char *const rxrpc_pkts[];
 extern const s8 rxrpc_ack_priority[];
@@ -823,10 +824,7 @@ extern const char *rxrpc_acks(u8 reason);
 /*
  * output.c
  */
-extern unsigned int rxrpc_resend_timeout;
-
 int rxrpc_send_data_packet(struct rxrpc_connection *, struct sk_buff *);
-int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
 
 /*
  * peer_event.c
@@ -888,6 +886,11 @@ int __init rxrpc_init_security(void);
 void rxrpc_exit_security(void);
 int rxrpc_init_client_conn_security(struct rxrpc_connection *);
 int rxrpc_init_server_conn_security(struct rxrpc_connection *);
+ 
+/*
+ * sendmsg.c
+ */
+int rxrpc_do_sendmsg(struct rxrpc_sock *, struct msghdr *, size_t);
 
 /*
  * skbuff.c

net/rxrpc/misc.c

@@ -64,6 +64,11 @@ unsigned int rxrpc_rx_mtu = 5692;
  */
 unsigned int rxrpc_rx_jumbo_max = 4;
 
+/*
+ * Time till packet resend (in jiffies).
+ */
+unsigned int rxrpc_resend_timeout = 4 * HZ;
+
 const char *const rxrpc_pkts[] = {
 	"?00",
 	"DATA", "ACK", "BUSY", "ABORT", "ACKALL", "CHALL", "RESP", "DEBUG",