1 /* $NetBSD: mpls.h,v 1.1 2010/06/26 14:24:28 kefren Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Mihai Chelaru <kefren@NetBSD.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _NETMPLS_MPLS_H_ 33 #define _NETMPLS_MPLS_H_ 34 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/proc.h> 38 #include <sys/queue.h> 39 40 #include <net/if.h> 41 #include <net/if_dl.h> 42 43 #define MPLS_LABEL_IPV4NULL 0 /* IPv4 Explicit NULL Label */ 44 #define MPLS_LABEL_RTALERT 1 /* Router Alert Label */ 45 #define MPLS_LABEL_IPV6NULL 2 /* IPv6 Explicit NULL Label */ 46 #define MPLS_LABEL_IMPLNULL 3 /* Implicit NULL Label */ 47 #define MPLS_LABEL_RESMAX 15 /* Maximum reserved Label */ 48 49 union mpls_shim { 50 uint32_t s_addr; /* the whole shim */ 51 struct { 52 #if BYTE_ORDER == LITTLE_ENDIAN 53 uint32_t ttl:8; 54 uint32_t bos:1; 55 uint32_t exp:3; 56 uint32_t label:20; 57 #else 58 uint32_t label:20; 59 uint32_t exp:3; 60 uint32_t bos:1; 61 uint32_t ttl:8; 62 #endif 63 } shim; 64 }; 65 66 struct sockaddr_mpls { 67 uint8_t smpls_len; 68 uint8_t smpls_family; 69 uint8_t smpls_pad[2]; 70 union mpls_shim smpls_addr; 71 } __packed; 72 73 74 #endif /* !_NETMPLS_MPLS_H_ */ 75