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); 33 void smc_tx_consumer_update(struct smc_connection *conn); 34 35 #endif /* SMC_TX_H */ 36