1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
 4 *
 5 * Manage send buffer
 6 *
 7 * Copyright IBM Corp. 2016
 8 *
 9 * Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com>
10 */
11
12#ifndef SMC_TX_H
13#define SMC_TX_H
14
15#include <linux/socket.h>
16#include <linux/types.h>
17
18#include "smc.h"
19#include "smc_cdc.h"
20
21static inline int smc_tx_prepared_sends(struct smc_connection *conn)
22{
23	union smc_host_cursor sent, prep;
24
25	smc_curs_write(&sent, smc_curs_read(&conn->tx_curs_sent, conn), conn);
26	smc_curs_write(&prep, smc_curs_read(&conn->tx_curs_prep, conn), conn);
27	return smc_curs_diff(conn->sndbuf_size, &sent, &prep);
28}
29
30void smc_tx_init(struct smc_sock *smc);
31int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len);
32int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
33void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
34void smc_tx_consumer_update(struct smc_connection *conn);
35
36#endif /* SMC_TX_H */