1 /* $OpenBSD: ospfe.h,v 1.48 2021/01/19 09:33:38 claudio Exp $ */ 2 3 /* 4 * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _OSPFE_H_ 20 #define _OSPFE_H_ 21 22 #define max(x,y) ((x) > (y) ? (x) : (y)) 23 24 #include <sys/types.h> 25 #include <sys/socket.h> 26 #include <netinet/in.h> 27 #include <netinet/ip.h> 28 29 struct lsa_entry { 30 TAILQ_ENTRY(lsa_entry) entry; 31 union { 32 struct lsa_hdr *lu_lsa; 33 struct lsa_ref *lu_ref; 34 } le_data; 35 unsigned short le_when; 36 unsigned short le_oneshot; 37 }; 38 #define le_lsa le_data.lu_lsa 39 #define le_ref le_data.lu_ref 40 41 struct lsa_ref { 42 LIST_ENTRY(lsa_ref) entry; 43 struct lsa_hdr hdr; 44 void *data; 45 time_t stamp; 46 int refcnt; 47 u_int16_t len; 48 }; 49 50 struct nbr_stats { 51 u_int32_t sta_chng; 52 }; 53 54 struct nbr { 55 LIST_ENTRY(nbr) entry, hash; 56 struct event inactivity_timer; 57 struct event db_tx_timer; 58 struct event lsreq_tx_timer; 59 struct event ls_retrans_timer; 60 struct event adj_timer; 61 62 struct nbr_stats stats; 63 64 struct lsa_head ls_retrans_list; 65 struct lsa_head db_sum_list; 66 struct lsa_head ls_req_list; 67 68 struct in_addr addr; 69 struct in_addr id; 70 struct in_addr dr; /* designated router */ 71 struct in_addr bdr; /* backup designated router */ 72 73 struct iface *iface; 74 struct lsa_entry *ls_req; 75 struct lsa_entry *dd_end; 76 77 u_int32_t dd_seq_num; 78 u_int32_t dd_pending; 79 u_int32_t peerid; /* unique ID in DB */ 80 u_int32_t ls_req_cnt; 81 u_int32_t ls_ret_cnt; 82 u_int32_t crypt_seq_num; 83 84 time_t uptime; 85 int state; 86 u_int8_t priority; 87 u_int8_t options; 88 u_int8_t capa_options; 89 u_int8_t last_rx_options; 90 u_int8_t last_rx_bits; 91 u_int8_t dd_master; 92 u_int8_t dd_more; 93 u_int8_t dd_snapshot; /* snapshot running */ 94 }; 95 96 struct ctl_conn; 97 98 /* auth.c */ 99 int auth_validate(void *buf, u_int16_t len, struct iface *, 100 struct nbr *); 101 int auth_gen(struct ibuf *, struct iface *); 102 void md_list_add(struct auth_md_head *, u_int8_t, char *); 103 void md_list_copy(struct auth_md_head *, struct auth_md_head *); 104 void md_list_clr(struct auth_md_head *); 105 int md_list_send(struct auth_md_head *, struct imsgev *); 106 107 /* database.c */ 108 int send_db_description(struct nbr *); 109 void recv_db_description(struct nbr *, char *, u_int16_t); 110 void db_sum_list_add(struct nbr *, struct lsa_hdr *); 111 int db_sum_list_del(struct nbr *, struct lsa_hdr *); 112 void db_sum_list_clr(struct nbr *); 113 void db_tx_timer(int, short, void *); 114 void start_db_tx_timer(struct nbr *); 115 void stop_db_tx_timer(struct nbr *); 116 117 /* hello.c */ 118 int send_hello(struct iface *); 119 void recv_hello(struct iface *, struct in_addr, u_int32_t, 120 char *, u_int16_t); 121 122 /* ospfe.c */ 123 pid_t ospfe(struct ospfd_conf *, int[2], int[2], int[2]); 124 void ospfe_dispatch_main(int, short, void *); 125 void ospfe_dispatch_rde(int, short, void *); 126 int ospfe_imsg_compose_parent(int, pid_t, void *, u_int16_t); 127 int ospfe_imsg_compose_rde(int, u_int32_t, pid_t, void *, 128 u_int16_t); 129 u_int32_t ospfe_router_id(void); 130 void ospfe_fib_update(int); 131 void ospfe_iface_ctl(struct ctl_conn *, unsigned int); 132 void ospfe_nbr_ctl(struct ctl_conn *); 133 void orig_rtr_lsa(struct area *); 134 void orig_net_lsa(struct iface *); 135 void ospfe_demote_area(struct area *, int); 136 void ospfe_demote_iface(struct iface *, int); 137 138 /* interface.c */ 139 int if_fsm(struct iface *, enum iface_event); 140 141 struct iface *if_new(struct kif *, struct kif_addr *); 142 void if_del(struct iface *); 143 void if_init(struct ospfd_conf *, struct iface *); 144 145 int if_act_start(struct iface *); 146 int if_act_elect(struct iface *); 147 int if_act_reset(struct iface *); 148 149 struct ctl_iface *if_to_ctl(struct iface *); 150 151 int if_join_group(struct iface *, struct in_addr *); 152 int if_leave_group(struct iface *, struct in_addr *); 153 int if_set_mcast(struct iface *); 154 int if_set_recvif(int, int); 155 void if_set_sockbuf(int); 156 int if_set_mcast_loop(int); 157 int if_set_ip_hdrincl(int); 158 159 /* lsack.c */ 160 int delay_lsa_ack(struct iface *, struct lsa_hdr *); 161 int send_direct_ack(struct iface *, struct in_addr, void *, size_t); 162 void recv_ls_ack(struct nbr *, char *, u_int16_t); 163 int lsa_hdr_check(struct nbr *, struct lsa_hdr *); 164 void ls_ack_list_add(struct iface *, struct lsa_hdr *); 165 void ls_ack_list_free(struct iface *, struct lsa_entry *); 166 void ls_ack_list_clr(struct iface *); 167 int ls_ack_list_empty(struct iface *); 168 void ls_ack_tx_timer(int, short, void *); 169 void start_ls_ack_tx_timer(struct iface *); 170 void stop_ls_ack_tx_timer(struct iface *); 171 172 /* lsreq.c */ 173 int send_ls_req(struct nbr *); 174 void recv_ls_req(struct nbr *, char *, u_int16_t); 175 void ls_req_list_add(struct nbr *, struct lsa_hdr *); 176 int ls_req_list_del(struct nbr *, struct lsa_hdr *); 177 struct lsa_entry *ls_req_list_get(struct nbr *, struct lsa_hdr *); 178 void ls_req_list_free(struct nbr *, struct lsa_entry *); 179 void ls_req_list_clr(struct nbr *); 180 int ls_req_list_empty(struct nbr *); 181 void ls_req_tx_timer(int, short, void *); 182 void start_ls_req_tx_timer(struct nbr *); 183 void stop_ls_req_tx_timer(struct nbr *); 184 185 /* lsupdate.c */ 186 int lsa_flood(struct iface *, struct nbr *, struct lsa_hdr *, 187 void *); 188 void recv_ls_update(struct nbr *, char *, u_int16_t); 189 190 void ls_retrans_list_add(struct nbr *, struct lsa_hdr *, 191 unsigned short, unsigned short); 192 int ls_retrans_list_del(struct nbr *, struct lsa_hdr *); 193 struct lsa_entry *ls_retrans_list_get(struct nbr *, struct lsa_hdr *); 194 void ls_retrans_list_free(struct nbr *, struct lsa_entry *); 195 void ls_retrans_list_clr(struct nbr *); 196 void ls_retrans_timer(int, short, void *); 197 198 void lsa_cache_init(u_int32_t); 199 struct lsa_ref *lsa_cache_add(void *, u_int16_t); 200 struct lsa_ref *lsa_cache_get(struct lsa_hdr *); 201 void lsa_cache_put(struct lsa_ref *, struct nbr *); 202 203 /* neighbor.c */ 204 void nbr_init(u_int32_t); 205 struct nbr *nbr_new(u_int32_t, struct iface *, int); 206 void nbr_del(struct nbr *); 207 208 struct nbr *nbr_find_id(struct iface *, u_int32_t); 209 struct nbr *nbr_find_peerid(u_int32_t); 210 211 int nbr_fsm(struct nbr *, enum nbr_event); 212 213 void nbr_itimer(int, short, void *); 214 void nbr_start_itimer(struct nbr *); 215 void nbr_stop_itimer(struct nbr *); 216 void nbr_reset_itimer(struct nbr *); 217 218 void nbr_adj_timer(int, short, void *); 219 void nbr_start_adj_timer(struct nbr *); 220 221 int nbr_act_reset_itimer(struct nbr *); 222 int nbr_act_start_itimer(struct nbr *); 223 int nbr_act_eval(struct nbr *); 224 int nbr_act_snapshot(struct nbr *); 225 int nbr_act_exchange_done(struct nbr *); 226 int nbr_act_adj_ok(struct nbr *); 227 int nbr_act_restart_dd(struct nbr *); 228 int nbr_act_delete(struct nbr *); 229 int nbr_act_clear_lists(struct nbr *); 230 int nbr_act_hello_check(struct nbr *); 231 232 struct ctl_nbr *nbr_to_ctl(struct nbr *); 233 234 struct lsa_hdr *lsa_hdr_new(void); 235 236 /* packet.c */ 237 int gen_ospf_hdr(struct ibuf *, struct iface *, u_int8_t); 238 int send_packet(struct iface *, struct ibuf *, struct sockaddr_in *); 239 void recv_packet(int, short, void *); 240 241 #endif /* _OSPFE_H_ */ 242