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/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* Definitions for the SMC module (socket related)
*
* Copyright IBM Corp. 2016
*
* Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
*/
#ifndef __SMC_H
#define __SMC_H
#include <linux/socket.h>
#include <linux/types.h>
#include <net/sock.h>
#define SMCPROTO_SMC 0 /* SMC protocol */
#define SMC_MAX_PORTS 2 /* Max # of ports */
enum smc_state { /* possible states of an SMC socket */
SMC_ACTIVE = 1,
SMC_INIT = 2,
SMC_CLOSED = 7,
SMC_LISTEN = 10,
};
struct smc_sock { /* smc sock container */
struct sock sk;
struct socket *clcsock; /* internal tcp socket */
bool use_fallback; /* fallback to tcp */
};
static inline struct smc_sock *smc_sk(const struct sock *sk)
{
return (struct smc_sock *)sk;
}
#define SMC_SYSTEMID_LEN 8
extern u8 local_systemid[SMC_SYSTEMID_LEN]; /* unique system identifier */
#endif /* __SMC_H */
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