1/*-
 2 * Copyright (c) 2020 Mellanox Technologies. All rights reserved.
 3 *
 4 * Redistribution and use in source and binary forms, with or without
 5 * modification, are permitted provided that the following conditions
 6 * are met:
 7 * 1. Redistributions of source code must retain the above copyright
 8 *    notice, this list of conditions and the following disclaimer.
 9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#ifndef __INFINIBAND_H__
27#define	__INFINIBAND_H__
28
29#include <sys/cdefs.h>
30#include <sys/stdint.h>
31
32#define	INFINIBAND_ADDR_LEN	20	/* bytes */
33#define	INFINIBAND_MTU		1500	/* bytes - default value */
34
35#define	INFINIBAND_ENC_LEN	4	/* bytes */
36#define	INFINIBAND_HDR_LEN \
37    (INFINIBAND_ADDR_LEN + INFINIBAND_ENC_LEN)
38
39#define	INFINIBAND_IS_MULTICAST(addr) \
40    ((addr)[4] == 0xff)
41
42struct infiniband_header {
43	uint8_t	ib_hwaddr[INFINIBAND_ADDR_LEN];
44	uint16_t ib_protocol;		/* big endian */
45	uint16_t ib_reserved;		/* zero */
46} __packed;
47
48struct infiniband_address {
49	uint8_t	octet[INFINIBAND_ADDR_LEN];
50} __packed;
51
52#ifdef _KERNEL
53
54#include <sys/_eventhandler.h>
55
56struct ifnet;
57struct mbuf;
58
59extern void infiniband_ifattach(struct ifnet *, const uint8_t *hwaddr, const uint8_t *bcaddr);
60extern void infiniband_ifdetach(struct ifnet *);
61extern void infiniband_bpf_mtap(struct ifnet *, struct mbuf *);
62
63/* new infiniband interface attached event */
64typedef void (*infiniband_ifattach_event_handler_t)(void *, struct ifnet *);
65
66EVENTHANDLER_DECLARE(infiniband_ifattach_event, infiniband_ifattach_event_handler_t);
67
68#endif
69
70#endif					/* __INFINIBAND_H__ */