| /* 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_init(void) __init; |
| |
| #endif /* SMC_LLC_H */ |