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Diffstat (limited to 'freebsd/sys/net/ieee_oui.h')
-rw-r--r-- | freebsd/sys/net/ieee_oui.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/freebsd/sys/net/ieee_oui.h b/freebsd/sys/net/ieee_oui.h new file mode 100644 index 00000000..068328d8 --- /dev/null +++ b/freebsd/sys/net/ieee_oui.h @@ -0,0 +1,85 @@ +/* - + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2013 The FreeBSD Foundation + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + * Author: George V. Neville-Neil + * + */ + +/* Organizationally Unique Identifier assigned by IEEE 14 Nov 2013 */ +#define OUI_FREEBSD_BASE 0x589cfc000000 +#define OUI_FREEBSD(nic) (OUI_FREEBSD_BASE | (nic)) + +/* + * OUIs are most often used to uniquely identify network interfaces + * and occupy the first 3 bytes of both destination and source MAC + * addresses. The following allocations exist so that various + * software systems associated with FreeBSD can have unique IDs in the + * absence of hardware. The use of OUIs for this purpose is not fully + * fleshed out but is now in common use in virtualization technology. + * + * Allocations from this range are expected to be made using COMMON + * SENSE by developers. Do NOT take a large range just because + * they're currently wide open. Take the smallest useful range for + * your system. We have (2^24 - 2) available addresses (see Reserved + * Values below) but that is far from infinite. + * + * In the event of a conflict arbitration of allocation in this file + * is subject to core@ approval. + * + * Applications are differentiated based on the high order bit(s) of + * the remaining three bytes. Our first allocation has all 0s, the + * next allocation has the highest bit set. Allocating in this way + * gives us 254 allocations of 64K addresses. Address blocks can be + * concatenated if necessary. + * + * Reserved Values: 0x000000 and 0xffffff are reserved and MUST NOT BE + * allocated for any reason. + */ + +/* Allocate 20 bits to bhyve */ +#define OUI_FREEBSD_BHYVE_LOW OUI_FREEBSD(0x000001) +#define OUI_FREEBSD_BHYVE_HIGH OUI_FREEBSD(0x0fffff) + +/* + * Allocate 16 bits for a pool to give to various interfaces that need a + * generated address, but don't quite need to slice off a whole section of + * the OUI (e.g. cloned interfaces, one-off NICs of various vendors). + * + * ether_gen_addr should be used to generate an address from this pool. + */ +#define OUI_FREEBSD_GENERATED_MASK 0x10ffff +#define OUI_FREEBSD_GENERATED_LOW OUI_FREEBSD(0x100000) +#define OUI_FREEBSD_GENERATED_HIGH OUI_FREEBSD(OUI_FREEBSD_GENERATED_MASK) + +/* Allocate 16 bits for emulated NVMe devices */ +#define OUI_FREEBSD_NVME_MASK 0x20ffff +#define OUI_FREEBSD_NVME_LOW OUI_FREEBSD(0x200000) +#define OUI_FREEBSD_NVME_HIGH OUI_FREEBSD(OUI_FREEBSD_NVME_MASK) |