[mirror_ubuntu-artful-kernel.git] / net / smc / smc_tx.h

/*
 * Shared Memory Communications over RDMA (SMC-R) and RoCE
 *
 * Manage send buffer
 *
 * Copyright IBM Corp. 2016
 *
 * Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com>
 */

#ifndef SMC_TX_H
#define SMC_TX_H

#include <linux/socket.h>
#include <linux/types.h>

#include "smc.h"
#include "smc_cdc.h"

static inline int smc_tx_prepared_sends(struct smc_connection *conn)
{
	union smc_host_cursor sent, prep;

	smc_curs_write(&sent, smc_curs_read(&conn->tx_curs_sent, conn), conn);
	smc_curs_write(&prep, smc_curs_read(&conn->tx_curs_prep, conn), conn);
	return smc_curs_diff(conn->sndbuf_size, &sent, &prep);
}

void smc_tx_init(struct smc_sock *smc);
int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len);
int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
void smc_tx_consumer_update(struct smc_connection *conn);

#endif /* SMC_TX_H */
Commit	Line	Data
e6727f39 UB	1	/*
	2	* Shared Memory Communications over RDMA (SMC-R) and RoCE
	3	*
	4	* Manage send buffer
	5	*
	6	* Copyright IBM Corp. 2016
	7	*
	8	* Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
	9	*/
	10
	11	#ifndef SMC_TX_H
	12	#define SMC_TX_H
	13
	14	#include <linux/socket.h>
	15	#include <linux/types.h>
	16
	17	#include "smc.h"
	18	#include "smc_cdc.h"
	19
	20	static inline int smc_tx_prepared_sends(struct smc_connection *conn)
	21	{
	22	union smc_host_cursor sent, prep;
	23
	24	smc_curs_write(&sent, smc_curs_read(&conn->tx_curs_sent, conn), conn);
	25	smc_curs_write(&prep, smc_curs_read(&conn->tx_curs_prep, conn), conn);
	26	return smc_curs_diff(conn->sndbuf_size, &sent, &prep);
	27	}
	28
	29	void smc_tx_init(struct smc_sock *smc);
	30	int smc_tx_sendmsg(struct smc_sock smc, struct msghdr msg, size_t len);
	31	int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
	32	void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
952310cc	33	void smc_tx_consumer_update(struct smc_connection *conn);
e6727f39 UB	34
e6727f39 UB	35	#endif /* SMC_TX_H */