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| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 9bf9abea UB |
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 | ||
| 22 | enum smc_llc_reqresp { | |
| 23 | SMC_LLC_REQ, | |
| 24 | SMC_LLC_RESP | |
| 25 | }; | |
| 26 | ||
| 27 | enum smc_llc_msg_type { | |
| 28 | SMC_LLC_CONFIRM_LINK = 0x01, | |
| 29 | }; | |
| 30 | ||
| 31 | #define SMC_LLC_DATA_LEN 40 | |
| 32 | ||
| 33 | struct smc_llc_hdr { | |
| 34 | struct smc_wr_rx_hdr common; | |
| 35 | u8 length; /* 44 */ | |
| 36 | u8 reserved; | |
| 37 | u8 flags; | |
| 38 | }; | |
| 39 | ||
| 40 | struct smc_llc_msg_confirm_link { /* type 0x01 */ | |
| 41 | struct smc_llc_hdr hd; | |
| 42 | u8 sender_mac[ETH_ALEN]; | |
| 43 | u8 sender_gid[SMC_GID_SIZE]; | |
| 44 | u8 sender_qp_num[3]; | |
| 45 | u8 link_num; | |
| 46 | u8 link_uid[SMC_LGR_ID_SIZE]; | |
| 47 | u8 max_links; | |
| 48 | u8 reserved[9]; | |
| 49 | }; | |
| 50 | ||
| 51 | union smc_llc_msg { | |
| 52 | struct smc_llc_msg_confirm_link confirm_link; | |
| 53 | struct { | |
| 54 | struct smc_llc_hdr hdr; | |
| 55 | u8 data[SMC_LLC_DATA_LEN]; | |
| 56 | } raw; | |
| 57 | }; | |
| 58 | ||
| 59 | /* transmit */ | |
| 60 | int smc_llc_send_confirm_link(struct smc_link *lnk, u8 mac[], union ib_gid *gid, | |
| 61 | enum smc_llc_reqresp reqresp); | |
| 62 | int smc_llc_init(void) __init; | |
| 63 | ||
| 64 | #endif /* SMC_LLC_H */ |