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, u8 mac[], union ib_gid *gid, 40 enum smc_llc_reqresp reqresp); 41 int smc_llc_send_add_link(struct smc_link *link, u8 mac[], union ib_gid *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 */ 54