LXR linux/net/smc/smc

   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_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
  30void smc_tx_pending(struct smc_connection *conn);
  31void smc_tx_work(struct work_struct *work);
  32void smc_tx_init(struct smc_sock *smc);
  33int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len);
  34int smc_tx_sendpage(struct smc_sock *smc, struct page *page, int offset,
  35                    size_t size, int flags);
  36int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
  37void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
  38void smc_tx_consumer_update(struct smc_connection *conn, bool force);
  39int 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