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__ */