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 21 static inline int smc_tx_prepared_sends(struct smc_connection *conn) 22 { 23 union smc_host_cursor sent, prep; 24 25 smc_curs_copy(&sent, &conn->tx_curs_sent, conn); 26 smc_curs_copy(&prep, &conn->tx_curs_prep, conn); 27 return smc_curs_diff(conn->sndbuf_desc->len, &sent, &prep); 28 } 29 30 void smc_tx_pending(struct smc_connection *conn); 31 void smc_tx_work(struct work_struct *work); 32 void smc_tx_init(struct smc_sock *smc); 33 int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len); 34 int smc_tx_sendpage(struct smc_sock *smc, struct page *page, int offset, 35 size_t size, int flags); 36 int smc_tx_sndbuf_nonempty(struct smc_connection *conn); 37 void smc_tx_sndbuf_nonfull(struct smc_sock *smc); 38 void smc_tx_consumer_update(struct smc_connection *conn, bool force); 39 int smcd_tx_ism_write(struct smc_connection *conn, void *data, size_t len, 40 u32 offset, int signal); 41 42 #endif /* SMC_TX_H */ 43