blob: 461c0c3ef76ef9f424c54c86226cbc30bd71faf3 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Ursula Braun9bf9abe2017-01-09 16:55:21 +01002/*
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
4 *
5 * Definitions for LLC (link layer control) message handling
6 *
7 * Copyright IBM Corp. 2016
8 *
9 * Author(s): Klaus Wacker <Klaus.Wacker@de.ibm.com>
10 * Ursula Braun <ubraun@linux.vnet.ibm.com>
11 */
12
13#ifndef SMC_LLC_H
14#define SMC_LLC_H
15
16#include "smc_wr.h"
17
18#define SMC_LLC_FLAG_RESP 0x80
19
20#define SMC_LLC_WAIT_FIRST_TIME (5 * HZ)
Karsten Graul52bedf32018-03-01 13:51:32 +010021#define SMC_LLC_WAIT_TIME (2 * HZ)
Ursula Braun9bf9abe2017-01-09 16:55:21 +010022
23enum smc_llc_reqresp {
24 SMC_LLC_REQ,
25 SMC_LLC_RESP
26};
27
28enum smc_llc_msg_type {
29 SMC_LLC_CONFIRM_LINK = 0x01,
Karsten Graul52bedf32018-03-01 13:51:32 +010030 SMC_LLC_ADD_LINK = 0x02,
31 SMC_LLC_DELETE_LINK = 0x04,
Karsten Graul4ed75de2018-03-01 13:51:30 +010032 SMC_LLC_CONFIRM_RKEY = 0x06,
Karsten Graul313164d2018-03-01 13:51:29 +010033 SMC_LLC_TEST_LINK = 0x07,
Karsten Graul4ed75de2018-03-01 13:51:30 +010034 SMC_LLC_CONFIRM_RKEY_CONT = 0x08,
35 SMC_LLC_DELETE_RKEY = 0x09,
Ursula Braun9bf9abe2017-01-09 16:55:21 +010036};
37
Ursula Braun9bf9abe2017-01-09 16:55:21 +010038/* transmit */
Ursula Braun947541f2018-07-25 16:35:30 +020039int smc_llc_send_confirm_link(struct smc_link *lnk,
Ursula Braun9bf9abe2017-01-09 16:55:21 +010040 enum smc_llc_reqresp reqresp);
Ursula Braun7005ada2018-07-25 16:35:31 +020041int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
Karsten Graul52bedf32018-03-01 13:51:32 +010042 enum smc_llc_reqresp reqresp);
43int smc_llc_send_delete_link(struct smc_link *link,
Karsten Graul0d18a0cb2018-07-25 16:35:33 +020044 enum smc_llc_reqresp reqresp, bool orderly);
Karsten Graul2a4c57a2018-05-15 17:04:59 +020045int smc_llc_link_init(struct smc_link *link);
Karsten Graul877ae5b2018-05-02 16:56:44 +020046void smc_llc_link_active(struct smc_link *link, int testlink_time);
Karsten Graul0d18a0cb2018-07-25 16:35:33 +020047void smc_llc_link_deleting(struct smc_link *link);
Karsten Graul877ae5b2018-05-02 16:56:44 +020048void smc_llc_link_inactive(struct smc_link *link);
Karsten Graul2a4c57a2018-05-15 17:04:59 +020049void smc_llc_link_clear(struct smc_link *link);
Karsten Graul44aa81c2018-05-15 17:04:55 +020050int smc_llc_do_confirm_rkey(struct smc_link *link,
51 struct smc_buf_desc *rmb_desc);
Karsten Graul60e03c62018-11-22 10:26:42 +010052int smc_llc_do_delete_rkey(struct smc_link *link,
53 struct smc_buf_desc *rmb_desc);
Ursula Braun9bf9abe2017-01-09 16:55:21 +010054int smc_llc_init(void) __init;
55
56#endif /* SMC_LLC_H */