LXR linux/net/smc/smc

   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
  20static 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
  29void smc_tx_init(struct smc_sock *smc);
  30int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len);
  31int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
  32void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
  33void smc_tx_consumer_update(struct smc_connection *conn);
  34
  35#endif /* SMC_TX_H */
  36