1 /* $NetBSD: ldp_peer.h,v 1.9 2020/04/22 23:53:27 joerg 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 _LDP_PEER_H_ 33 #define _LDP_PEER_H_ 34 35 #include "sys/types.h" 36 #include "sys/rbtree.h" 37 #include "sys/queue.h" 38 #include "netinet/in.h" 39 40 #include "mpls_routes.h" 41 #include "tlv.h" 42 43 struct ldp_peer_address { 44 union sockunion address; 45 SLIST_ENTRY(ldp_peer_address) addresses; 46 }; 47 48 struct label_mapping { 49 union sockunion address; 50 uint prefix; 51 uint label; 52 rb_node_t mappings_node; 53 }; 54 55 struct ldp_peer { 56 /* 57 * I add routes to address. 58 * I maintain LDP TCP connection on transport_address. 59 * I use ldp_id as peer identificator. 60 */ 61 struct sockaddr *address, *transport_address; 62 /* According to draft-ietf-mpls-ldp-ipv6-07 ID is IPv4 only for now */ 63 struct in_addr ldp_id; 64 /* TCP socket */ 65 int socket; 66 /* Rest of the peer parameters */ 67 uint16_t holdtime, timeout; 68 int master; /* 0 if we're passive */ 69 int state; /* see below for possible states */ 70 time_t established_t; /* time when it did connect */ 71 /* Here I maintain all the addresses announced by a peer */ 72 SLIST_HEAD(,ldp_peer_address) ldp_peer_address_head; 73 rb_tree_t label_mapping_tree; 74 75 SLIST_ENTRY(ldp_peer) peers; 76 }; 77 extern SLIST_HEAD(ldp_peer_head,ldp_peer) ldp_peer_head; 78 79 struct peer_map { 80 struct ldp_peer *peer; 81 struct label_mapping *lm; 82 }; 83 84 /* LDP Peers States */ 85 #define LDP_PEER_CONNECTING 0 86 #define LDP_PEER_CONNECTED 1 87 #define LDP_PEER_ESTABLISHED 2 88 #define LDP_PEER_HOLDDOWN 3 89 90 int sockaddr_cmp(const struct sockaddr *, const struct sockaddr *); 91 void ldp_peer_init(void); 92 struct ldp_peer * ldp_peer_new(const struct in_addr *, const struct sockaddr *, 93 const struct sockaddr *, uint16_t, int); 94 void ldp_peer_holddown(struct ldp_peer *); 95 void ldp_peer_delete(struct ldp_peer *); 96 struct ldp_peer * get_ldp_peer(const struct sockaddr *); 97 struct ldp_peer * get_ldp_peer_by_id(const struct in_addr *); 98 struct ldp_peer * get_ldp_peer_by_socket(int); 99 int add_ifaddresses(struct ldp_peer *, const struct al_tlv *); 100 int add_ifaddr(struct ldp_peer *, const struct sockaddr *); 101 int del_ifaddr(struct ldp_peer *, const struct sockaddr *); 102 struct ldp_peer_address * check_ifaddr(const struct ldp_peer *, 103 const struct sockaddr *); 104 void print_bounded_addresses(const struct ldp_peer *); 105 void del_all_ifaddr(struct ldp_peer *); 106 int del_ifaddresses(struct ldp_peer *, const struct al_tlv *); 107 108 int ldp_peer_add_mapping(struct ldp_peer *, const struct sockaddr *, int, int); 109 int ldp_peer_delete_mapping(struct ldp_peer *, const struct sockaddr *, int); 110 void ldp_peer_delete_all_mappings(struct ldp_peer *); 111 void ldp_peer_holddown_all(void); 112 113 struct peer_map * ldp_test_mapping(const struct sockaddr *, int, 114 const struct sockaddr *); 115 struct label_mapping * ldp_peer_lm_right(struct ldp_peer *, 116 struct label_mapping *); 117 118 const char * ldp_state_to_name(int); 119 120 #endif /* !_LDP_PEER_H_ */ 121