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net/smc/smc_llc.h
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/* SPDX-License-Identifier: GPL-2.0 */ |
9bf9abead smc: link layer c... |
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/* * 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) enum smc_llc_reqresp { SMC_LLC_REQ, SMC_LLC_RESP }; enum smc_llc_msg_type { SMC_LLC_CONFIRM_LINK = 0x01, }; #define SMC_LLC_DATA_LEN 40 struct smc_llc_hdr { struct smc_wr_rx_hdr common; u8 length; /* 44 */ u8 reserved; u8 flags; }; struct smc_llc_msg_confirm_link { /* type 0x01 */ struct smc_llc_hdr hd; u8 sender_mac[ETH_ALEN]; u8 sender_gid[SMC_GID_SIZE]; u8 sender_qp_num[3]; u8 link_num; u8 link_uid[SMC_LGR_ID_SIZE]; u8 max_links; u8 reserved[9]; }; union smc_llc_msg { struct smc_llc_msg_confirm_link confirm_link; struct { struct smc_llc_hdr hdr; u8 data[SMC_LLC_DATA_LEN]; } raw; }; /* transmit */ int smc_llc_send_confirm_link(struct smc_link *lnk, u8 mac[], union ib_gid *gid, enum smc_llc_reqresp reqresp); int smc_llc_init(void) __init; #endif /* SMC_LLC_H */ |