sys/net/infiniband.h

   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
  42 struct 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
  48 struct infiniband_address {
  49         uint8_t octet[INFINIBAND_ADDR_LEN];
  50 } __packed;
  51
  52 #ifdef _KERNEL
  53
  54 #include <sys/_eventhandler.h>
  55
  56 struct ifnet;
  57 struct mbuf;
  58
  59 extern void infiniband_ifattach(struct ifnet *, const uint8_t *hwaddr, const uint8_t *bcaddr);
  60 extern void infiniband_ifdetach(struct ifnet *);
  61 extern void infiniband_bpf_mtap(struct ifnet *, struct mbuf *);
  62
  63 /* new infiniband interface attached event */
  64 typedef void (*infiniband_ifattach_event_handler_t)(void *, struct ifnet *);
  65
  66 EVENTHANDLER_DECLARE(infiniband_ifattach_event, infiniband_ifattach_event_handler_t);
  67
  68 #endif
  69
  70 #endif                                  /* __INFINIBAND_H__ */