/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* Definitions for LLC (link layer control) message handling
*
* Copyright IBM Corp. 2016
*
* Author(s): Klaus Wacker <Klaus.Wacker@de.ibm.com>
* Ursula Braun <ubraun@linux.vnet.ibm.com>
*/
#ifndef SMC_LLC_H
#define SMC_LLC_H
#include "smc_wr.h"
#define SMC_LLC_FLAG_RESP 0x80
#define SMC_LLC_WAIT_FIRST_TIME (5 * HZ)
#define SMC_LLC_WAIT_TIME (2 * HZ)
enum smc_llc_reqresp {
SMC_LLC_REQ,
SMC_LLC_RESP
};
enum smc_llc_msg_type {
SMC_LLC_CONFIRM_LINK = 0x01,
SMC_LLC_ADD_LINK = 0x02,
SMC_LLC_DELETE_LINK = 0x04,
SMC_LLC_CONFIRM_RKEY = 0x06,
SMC_LLC_TEST_LINK = 0x07,
SMC_LLC_CONFIRM_RKEY_CONT = 0x08,
SMC_LLC_DELETE_RKEY = 0x09,
};
/* transmit */
int smc_llc_send_confirm_link(struct smc_link *lnk,
enum smc_llc_reqresp reqresp);
int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
enum smc_llc_reqresp reqresp);
int smc_llc_send_delete_link(struct smc_link *link,
enum smc_llc_reqresp reqresp, bool orderly);
int smc_llc_link_init(struct smc_link *link);
void smc_llc_link_active(struct smc_link *link, int testlink_time);
void smc_llc_link_deleting(struct smc_link *link);
void smc_llc_link_inactive(struct smc_link *link);
void smc_llc_link_clear(struct smc_link *link);
int smc_llc_do_confirm_rkey(struct smc_link *link,
struct smc_buf_desc *rmb_desc);
int smc_llc_do_delete_rkey(struct smc_link *link,
struct smc_buf_desc *rmb_desc);
int smc_llc_init(void) __init;
#endif /* SMC_LLC_H */
