65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* Definitions for LLC (link layer control) message handling
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*
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* Copyright IBM Corp. 2016
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*
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* Author(s): Klaus Wacker <Klaus.Wacker@de.ibm.com>
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* Ursula Braun <ubraun@linux.vnet.ibm.com>
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*/
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#ifndef SMC_LLC_H
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#define SMC_LLC_H
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#include "smc_wr.h"
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#define SMC_LLC_FLAG_RESP 0x80
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#define SMC_LLC_WAIT_FIRST_TIME (5 * HZ)
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enum smc_llc_reqresp {
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SMC_LLC_REQ,
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SMC_LLC_RESP
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};
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enum smc_llc_msg_type {
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SMC_LLC_CONFIRM_LINK = 0x01,
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};
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#define SMC_LLC_DATA_LEN 40
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struct smc_llc_hdr {
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struct smc_wr_rx_hdr common;
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u8 length; /* 44 */
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u8 reserved;
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u8 flags;
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};
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struct smc_llc_msg_confirm_link { /* type 0x01 */
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struct smc_llc_hdr hd;
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u8 sender_mac[ETH_ALEN];
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u8 sender_gid[SMC_GID_SIZE];
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u8 sender_qp_num[3];
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u8 link_num;
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u8 link_uid[SMC_LGR_ID_SIZE];
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u8 max_links;
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u8 reserved[9];
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};
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union smc_llc_msg {
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struct smc_llc_msg_confirm_link confirm_link;
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struct {
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struct smc_llc_hdr hdr;
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u8 data[SMC_LLC_DATA_LEN];
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} raw;
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};
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/* transmit */
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int smc_llc_send_confirm_link(struct smc_link *lnk, u8 mac[], union ib_gid *gid,
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enum smc_llc_reqresp reqresp);
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int smc_llc_init(void) __init;
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#endif /* SMC_LLC_H */
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