1 /* 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following 12 * disclaimer in the documentation and/or other materials provided 13 * with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 18 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 * 30 * Author: George V. Neville-Neil 31 * 32 */ 33 34 /* Organizationally Unique Identifier assigned by IEEE 14 Nov 2013 */ 35 #define OUI_FREEBSD_BASE 0x589cfc000000 36 #define OUI_FREEBSD(nic) (OUI_FREEBSD_BASE | (nic)) 37 38 /* 39 * OUIs are most often used to uniquely identify network interfaces 40 * and occupy the first 3 bytes of both destination and source MAC 41 * addresses. The following allocations exist so that various 42 * software systems associated with FreeBSD can have unique IDs in the 43 * absence of hardware. The use of OUIs for this purpose is not fully 44 * fleshed out but is now in common use in virtualization technology. 45 * 46 * Allocations from this range are expected to be made using COMMON 47 * SENSE by developers. Do NOT take a large range just because 48 * they're currently wide open. Take the smallest useful range for 49 * your system. We have (2^24 - 2) available addresses (see Reserved 50 * Values below) but that is far from infinite. 51 * 52 * In the event of a conflict arbitration of allocation in this file 53 * is subject to core@ approval. 54 * 55 * Applications are differentiated based on the high order bit(s) of 56 * the remaining three bytes. Our first allocation has all 0s, the 57 * next allocation has the highest bit set. Allocating in this way 58 * gives us 254 allocations of 64K addresses. Address blocks can be 59 * concatenated if necessary. 60 * 61 * Reserved Values: 0x000000 and 0xffffff are reserved and MUST NOT BE 62 * allocated for any reason. 63 */ 64 65 /* Allocate 20 bits to bhyve */ 66 #define OUI_FREEBSD_BHYVE_LOW OUI_FREEBSD(0x000001) 67 #define OUI_FREEBSD_BHYVE_HIGH OUI_FREEBSD(0x0fffff) 68