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v6.8
 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
 4 *
 5 * Manage RMBE
 6 *
 7 * Copyright IBM Corp. 2016
 8 *
 9 * Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com>
10 */
11
12#ifndef SMC_RX_H
13#define SMC_RX_H
14
15#include <linux/socket.h>
16#include <linux/types.h>
17
18#include "smc.h"
19
20void smc_rx_init(struct smc_sock *smc);
21
22int smc_rx_recvmsg(struct smc_sock *smc, struct msghdr *msg,
23		   struct pipe_inode_info *pipe, size_t len, int flags);
24int smc_rx_wait(struct smc_sock *smc, long *timeo,
25		int (*fcrit)(struct smc_connection *conn));
26static inline int smc_rx_data_available(struct smc_connection *conn)
27{
28	return atomic_read(&conn->bytes_to_rcv);
29}
30
31#endif /* SMC_RX_H */
v6.13.7
 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
 4 *
 5 * Manage RMBE
 6 *
 7 * Copyright IBM Corp. 2016
 8 *
 9 * Author(s):  Ursula Braun <ubraun@linux.vnet.ibm.com>
10 */
11
12#ifndef SMC_RX_H
13#define SMC_RX_H
14
15#include <linux/socket.h>
16#include <linux/types.h>
17
18#include "smc.h"
19
20void smc_rx_init(struct smc_sock *smc);
21
22int smc_rx_recvmsg(struct smc_sock *smc, struct msghdr *msg,
23		   struct pipe_inode_info *pipe, size_t len, int flags);
24int smc_rx_wait(struct smc_sock *smc, long *timeo, size_t peeked,
25		int (*fcrit)(struct smc_connection *conn, size_t baseline));
26static inline int smc_rx_data_available(struct smc_connection *conn, size_t peeked)
27{
28	return atomic_read(&conn->bytes_to_rcv) - peeked;
29}
30
31#endif /* SMC_RX_H */