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 #define INFINIBAND_BPF_MTAP(_ifp, _m) \ 45 do { \ 46 if (bpf_peers_present((_ifp)->if_bpf)) { \ 47 M_ASSERTVALID(_m); \ 48 infiniband_bpf_mtap(_ifp, _m); \ 49 } \ 50 } while (0) 51 52 struct infiniband_header { 53 uint8_t ib_hwaddr[INFINIBAND_ADDR_LEN]; 54 uint16_t ib_protocol; /* big endian */ 55 uint16_t ib_reserved; /* zero */ 56 } __packed; 57 58 struct infiniband_address { 59 uint8_t octet[INFINIBAND_ADDR_LEN]; 60 } __packed; 61 62 #ifdef _KERNEL 63 64 #include <sys/_eventhandler.h> 65 66 struct ifnet; 67 struct mbuf; 68 69 extern void infiniband_ifattach(struct ifnet *, const uint8_t *hwaddr, const uint8_t *bcaddr); 70 extern void infiniband_ifdetach(struct ifnet *); 71 extern void infiniband_bpf_mtap(struct ifnet *, struct mbuf *); 72 73 /* new infiniband interface attached event */ 74 typedef void (*infiniband_ifattach_event_handler_t)(void *, struct ifnet *); 75 76 EVENTHANDLER_DECLARE(infiniband_ifattach_event, infiniband_ifattach_event_handler_t); 77 78 #endif 79 80 #endif /* __INFINIBAND_H__ */ 81