1 /* 2 * Copyright (c) 2007 The DragonFly Project. 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 * 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 copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of The DragonFly Project nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific, prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _NETMPLS_MPLS_H_ 33 #define _NETMPLS_MPLS_H_ 34 35 #ifndef _KERNEL 36 #include <arpa/inet.h> 37 #endif 38 39 #include <sys/types.h> 40 41 typedef u_int32_t mpls_label_t; 42 typedef u_int8_t mpls_exp_t; 43 typedef u_int8_t mpls_s_t; 44 typedef u_int8_t mpls_ttl_t; 45 46 struct mpls { 47 u_int32_t mpls_shim; 48 }; 49 #define MPLS_LABEL_MASK 0xfffff000 50 #define MPLS_EXP_MASK 0x00000e00 51 #define MPLS_STACK_MASK 0x00000100 52 #define MPLS_TTL_MASK 0x000000ff 53 #define MPLS_LABEL(shim) (((shim) & MPLS_LABEL_MASK) >> 12) 54 #define MPLS_EXP(shim) (((shim) & MPLS_EXP_MASK) >> 9) 55 #define MPLS_STACK(shim) (((shim) & MPLS_STACK_MASK) >> 8) 56 #define MPLS_TTL(shim) ((shim) & MPLS_TTL_MASK) 57 #define MPLS_SET_LABEL(shim, x) \ 58 do { \ 59 shim &= ~MPLS_LABEL_MASK; \ 60 shim |= ((x) << 12) & MPLS_LABEL_MASK; \ 61 } while(0) 62 #define MPLS_SET_EXP(shim, x) \ 63 do { \ 64 shim &= ~MPLS_EXP_MASK; \ 65 shim |= ((x) << 9) & MPLS_EXP_MASK; \ 66 } while(0) 67 #define MPLS_SET_STACK(shim, x) \ 68 do { \ 69 shim &= ~MPLS_STACK_MASK; \ 70 shim |= ((x) << 8) & MPLS_STACK_MASK; \ 71 } while(0) 72 #define MPLS_SET_TTL(shim, x) \ 73 do { \ 74 shim &= ~MPLS_TTL_MASK; \ 75 shim |= (x) & MPLS_TTL_MASK; \ 76 } while(0) 77 78 struct mpls_addr { 79 mpls_label_t ma_label; 80 }; 81 82 struct sockaddr_mpls { 83 u_int8_t smpls_len; 84 u_int8_t smpls_family; 85 u_int8_t smpls_op; /* label op. push, pop, swap */ 86 mpls_exp_t smpls_exp; 87 struct mpls_addr smpls_addr; 88 }; 89 #define smpls_label smpls_addr.ma_label 90 91 #define MPLSLOP_PUSH 1 92 #define MPLSLOP_POP 2 93 #define MPLSLOP_SWAP 3 94 #define MPLSLOP_POPALL 4 95 96 #define MPLS_MAXLOPS 3 97 98 /* 99 * Definitions for mpls sysctl operations. 100 */ 101 #define CTL_MPLSPROTO_NAMES { \ 102 { "mpls", CTLTYPE_NODE }, \ 103 {0, 0} \ 104 } 105 106 /* 107 * Names for MPLS sysctl objects. 108 */ 109 #define MPLSCTL_FORWARDING 1 110 111 #endif /* _NETMPLS_MPLS_H_ */ 112 113