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1 | /* SPDX-License-Identifier: GPL-2.0 */ | |
2 | /* | |
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) | |
21 | #define SMC_LLC_WAIT_TIME (2 * HZ) | |
22 | ||
23 | enum smc_llc_reqresp { | |
24 | SMC_LLC_REQ, | |
25 | SMC_LLC_RESP | |
26 | }; | |
27 | ||
28 | enum smc_llc_msg_type { | |
29 | SMC_LLC_CONFIRM_LINK = 0x01, | |
30 | SMC_LLC_ADD_LINK = 0x02, | |
31 | SMC_LLC_DELETE_LINK = 0x04, | |
32 | SMC_LLC_CONFIRM_RKEY = 0x06, | |
33 | SMC_LLC_TEST_LINK = 0x07, | |
34 | SMC_LLC_CONFIRM_RKEY_CONT = 0x08, | |
35 | SMC_LLC_DELETE_RKEY = 0x09, | |
36 | }; | |
37 | ||
38 | /* transmit */ | |
39 | int smc_llc_send_confirm_link(struct smc_link *lnk, | |
40 | enum smc_llc_reqresp reqresp); | |
41 | int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[], | |
42 | enum smc_llc_reqresp reqresp); | |
43 | int smc_llc_send_delete_link(struct smc_link *link, | |
44 | enum smc_llc_reqresp reqresp); | |
45 | int smc_llc_link_init(struct smc_link *link); | |
46 | void smc_llc_link_active(struct smc_link *link, int testlink_time); | |
47 | void smc_llc_link_inactive(struct smc_link *link); | |
48 | void smc_llc_link_clear(struct smc_link *link); | |
49 | int smc_llc_do_confirm_rkey(struct smc_link *link, | |
50 | struct smc_buf_desc *rmb_desc); | |
51 | int smc_llc_init(void) __init; | |
52 | ||
53 | #endif /* SMC_LLC_H */ |