/* 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 */