xref: /freebsd/sys/net/infiniband.h (revision bdd1243d)
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  * $FreeBSD$
26  */
27 
28 #ifndef __INFINIBAND_H__
29 #define	__INFINIBAND_H__
30 
31 #include <sys/cdefs.h>
32 #include <sys/stdint.h>
33 
34 #define	INFINIBAND_ADDR_LEN	20	/* bytes */
35 #define	INFINIBAND_MTU		1500	/* bytes - default value */
36 
37 #define	INFINIBAND_ENC_LEN	4	/* bytes */
38 #define	INFINIBAND_HDR_LEN \
39     (INFINIBAND_ADDR_LEN + INFINIBAND_ENC_LEN)
40 
41 #define	INFINIBAND_IS_MULTICAST(addr) \
42     ((addr)[4] == 0xff)
43 
44 struct infiniband_header {
45 	uint8_t	ib_hwaddr[INFINIBAND_ADDR_LEN];
46 	uint16_t ib_protocol;		/* big endian */
47 	uint16_t ib_reserved;		/* zero */
48 } __packed;
49 
50 struct infiniband_address {
51 	uint8_t	octet[INFINIBAND_ADDR_LEN];
52 } __packed;
53 
54 #ifdef _KERNEL
55 
56 #include <sys/_eventhandler.h>
57 
58 struct ifnet;
59 struct mbuf;
60 
61 extern void infiniband_ifattach(struct ifnet *, const uint8_t *hwaddr, const uint8_t *bcaddr);
62 extern void infiniband_ifdetach(struct ifnet *);
63 extern void infiniband_bpf_mtap(struct ifnet *, struct mbuf *);
64 
65 /* new infiniband interface attached event */
66 typedef void (*infiniband_ifattach_event_handler_t)(void *, struct ifnet *);
67 
68 EVENTHANDLER_DECLARE(infiniband_ifattach_event, infiniband_ifattach_event_handler_t);
69 
70 #endif
71 
72 #endif					/* __INFINIBAND_H__ */
73