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https://github.com/torvalds/linux
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952310ccf2
move RMBE data into user space buffer and update managing cursors Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
35 lines
920 B
C
35 lines
920 B
C
/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* Manage send buffer
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*
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* Copyright IBM Corp. 2016
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*
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* Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
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*/
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#ifndef SMC_TX_H
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#define SMC_TX_H
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#include <linux/socket.h>
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#include <linux/types.h>
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#include "smc.h"
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#include "smc_cdc.h"
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static inline int smc_tx_prepared_sends(struct smc_connection *conn)
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{
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union smc_host_cursor sent, prep;
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smc_curs_write(&sent, smc_curs_read(&conn->tx_curs_sent, conn), conn);
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smc_curs_write(&prep, smc_curs_read(&conn->tx_curs_prep, conn), conn);
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return smc_curs_diff(conn->sndbuf_size, &sent, &prep);
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}
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void smc_tx_init(struct smc_sock *smc);
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int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len);
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int smc_tx_sndbuf_nonempty(struct smc_connection *conn);
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void smc_tx_sndbuf_nonfull(struct smc_sock *smc);
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void smc_tx_consumer_update(struct smc_connection *conn);
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#endif /* SMC_TX_H */
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