1 /* $NetBSD: defs.h,v 1.6 1995/12/10 10:06:59 mycroft Exp $ */ 2 3 /* 4 * The mrouted program is covered by the license in the accompanying file 5 * named "LICENSE". Use of the mrouted program represents acceptance of 6 * the terms and conditions listed in that file. 7 * 8 * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of 9 * Leland Stanford Junior University. 10 */ 11 12 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <unistd.h> 16 #include <ctype.h> 17 #include <errno.h> 18 #include <syslog.h> 19 #include <signal.h> 20 #include <string.h> 21 #include <sys/types.h> 22 #include <sys/socket.h> 23 #include <sys/ioctl.h> 24 #ifdef SYSV 25 #include <sys/sockio.h> 26 #endif 27 #include <sys/time.h> 28 #include <net/if.h> 29 #include <netinet/in.h> 30 #include <netinet/ip.h> 31 #include <netinet/igmp.h> 32 #include <netinet/ip_mroute.h> 33 #ifdef RSRR 34 #include <sys/un.h> 35 #endif /* RSRR */ 36 37 typedef void (*cfunc_t)(void *); 38 typedef void (*ihfunc_t)(int); 39 40 #include "dvmrp.h" 41 #include "vif.h" 42 #include "route.h" 43 #include "prune.h" 44 #include "pathnames.h" 45 #ifdef RSRR 46 #include "rsrr.h" 47 #include "rsrr_var.h" 48 #endif /* RSRR */ 49 50 /* 51 * Miscellaneous constants and macros. 52 */ 53 #define FALSE 0 54 #define TRUE 1 55 56 #define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0) 57 58 #define TIMER_INTERVAL ROUTE_MAX_REPORT_DELAY 59 60 #define VENDOR_CODE 1 /* Get a new vendor code if you make significant 61 * changes to mrouted. */ 62 63 #define PROTOCOL_VERSION 3 /* increment when packet format/content changes */ 64 65 #define MROUTED_VERSION 8 /* increment on local changes or bug fixes, */ 66 /* reset to 0 whenever PROTOCOL_VERSION increments */ 67 68 #define MROUTED_LEVEL ((MROUTED_VERSION << 8) | PROTOCOL_VERSION | \ 69 ((NF_PRUNE | NF_GENID | NF_MTRACE) << 16) | \ 70 (VENDOR_CODE << 24)) 71 /* for IGMP 'group' field of DVMRP messages */ 72 73 #define LEAF_FLAGS (( vifs_with_neighbors == 1 ) ? 0x010000 : 0) 74 /* more for IGMP 'group' field of DVMRP messages */ 75 #define DEL_RTE_GROUP 0 76 #define DEL_ALL_ROUTES 1 77 /* for Deleting kernel table entries */ 78 79 #define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */ 80 81 #ifdef RSRR 82 #define BIT_ZERO(X) ((X) = 0) 83 #define BIT_SET(X,n) ((X) |= 1 << (n)) 84 #define BIT_CLR(X,n) ((X) &= ~(1 << (n))) 85 #define BIT_TST(X,n) ((X) & 1 << (n)) 86 #endif /* RSRR */ 87 88 #ifdef SYSV 89 #define bcopy(a, b, c) memcpy(b, a, c) 90 #define bzero(s, n) memset((s), 0, (n)) 91 #define signal(s,f) sigset(s,f) 92 #endif 93 94 /* 95 * External declarations for global variables and functions. 96 */ 97 #define RECV_BUF_SIZE 8192 98 extern char *recv_buf; 99 extern char *send_buf; 100 extern int igmp_socket; 101 #ifdef RSRR 102 extern int rsrr_socket; 103 #endif /* RSRR */ 104 extern u_int32_t allhosts_group; 105 extern u_int32_t allrtrs_group; 106 extern u_int32_t dvmrp_group; 107 extern u_int32_t dvmrp_genid; 108 109 #define DEFAULT_DEBUG 2 /* default if "-d" given without value */ 110 111 extern int debug; 112 extern u_char pruning; 113 114 extern int routes_changed; 115 extern int delay_change_reports; 116 extern unsigned nroutes; 117 118 extern struct uvif uvifs[MAXVIFS]; 119 extern vifi_t numvifs; 120 extern int vifs_down; 121 extern int udp_socket; 122 extern int vifs_with_neighbors; 123 124 extern char s1[]; 125 extern char s2[]; 126 extern char s3[]; 127 extern char s4[]; 128 129 #ifdef OLD_KERNEL 130 #define MRT_INIT DVMRP_INIT 131 #define MRT_DONE DVMRP_DONE 132 #define MRT_ADD_VIF DVMRP_ADD_VIF 133 #define MRT_DEL_VIF DVMRP_DEL_VIF 134 #define MRT_ADD_MFC DVMRP_ADD_MFC 135 #define MRT_DEL_MFC DVMRP_DEL_MFC 136 137 #define IGMP_PIM 0x14 138 #endif 139 140 /* main.c */ 141 extern void logit(int, int, char *, ...); 142 extern int register_input_handler(int fd, ihfunc_t func); 143 144 /* igmp.c */ 145 extern void init_igmp(void); 146 extern void accept_igmp(int recvlen); 147 extern void send_igmp(u_int32_t src, u_int32_t dst, int type, 148 int code, u_int32_t group, int datalen); 149 150 /* callout.c */ 151 extern void callout_init(void); 152 extern void age_callout_queue(void); 153 extern int timer_setTimer(int delay, cfunc_t action, char *data); 154 extern void timer_clearTimer(int timer_id); 155 156 /* route.c */ 157 extern void init_routes(void); 158 extern void start_route_updates(void); 159 extern void update_route(u_int32_t origin, u_int32_t mask, 160 u_int metric, u_int32_t src, vifi_t vifi); 161 extern void age_routes(void); 162 extern void expire_all_routes(void); 163 extern void free_all_routes(void); 164 extern void accept_probe(u_int32_t src, u_int32_t dst, char *p, 165 int datalen, u_int32_t level); 166 extern void accept_report(u_int32_t src, u_int32_t dst, char *p, 167 int datalen, u_int32_t level); 168 extern struct rtentry * determine_route(u_int32_t src); 169 extern void report(int which_routes, vifi_t vifi, u_int32_t dst); 170 extern void report_to_all_neighbors(int which_routes); 171 extern int report_next_chunk(void); 172 extern void add_vif_to_routes(vifi_t vifi); 173 extern void delete_vif_from_routes(vifi_t vifi); 174 extern void delete_neighbor_from_routes(u_int32_t addr, 175 vifi_t vifi); 176 extern void dump_routes(FILE *fp); 177 extern void start_route_updates(void); 178 179 /* vif.c */ 180 extern void init_vifs(void); 181 extern void check_vif_state(void); 182 extern vifi_t find_vif(u_int32_t src, u_int32_t dst); 183 extern void age_vifs(void); 184 extern void dump_vifs(FILE *fp); 185 extern void stop_all_vifs(void); 186 extern struct listaddr *neighbor_info(vifi_t vifi, u_int32_t addr); 187 extern void accept_group_report(u_int32_t src, u_int32_t dst, 188 u_int32_t group, int r_type); 189 extern void query_groups(void); 190 extern void probe_for_neighbors(void); 191 extern int update_neighbor(vifi_t vifi, u_int32_t addr, 192 int msgtype, char *p, int datalen, u_int32_t level); 193 extern void accept_neighbor_request(u_int32_t src, u_int32_t dst); 194 extern void accept_neighbor_request2(u_int32_t src, u_int32_t dst); 195 extern void accept_neighbors(u_int32_t src, u_int32_t dst, 196 u_char *p, int datalen, u_int32_t level); 197 extern void accept_neighbors2(u_int32_t src, u_int32_t dst, 198 u_char *p, int datalen, u_int32_t level); 199 extern void accept_leave_message(u_int32_t src, u_int32_t dst, 200 u_int32_t group); 201 extern void accept_membership_query(u_int32_t src, u_int32_t dst, 202 u_int32_t group, int tmo); 203 extern void init_installvifs(void); 204 205 /* config.c */ 206 extern void config_vifs_from_kernel(void); 207 208 /* cfparse.y */ 209 extern void config_vifs_from_file(void); 210 211 /* inet.c */ 212 extern int inet_valid_host(u_int32_t naddr); 213 extern int inet_valid_subnet(u_int32_t nsubnet, u_int32_t nmask); 214 extern char * inet_fmt(u_int32_t addr, char *s); 215 extern char * inet_fmts(u_int32_t addr, u_int32_t mask, char *s); 216 extern u_int32_t inet_parse(char *s); 217 extern int inet_cksum(u_int16_t *addr, u_int len); 218 extern int inet_valid_host(u_int32_t naddr); 219 extern int inet_valid_mask(u_int32_t mask); 220 221 /* prune.c */ 222 extern unsigned kroutes; 223 extern void add_table_entry(u_int32_t origin, u_int32_t mcastgrp); 224 extern void del_table_entry(struct rtentry *r, 225 u_int32_t mcastgrp, u_int del_flag); 226 extern void update_table_entry(struct rtentry *r); 227 extern void init_ktable(void); 228 extern void accept_prune(u_int32_t src, u_int32_t dst, char *p, 229 int datalen); 230 extern void steal_sources(struct rtentry *rt); 231 extern void reset_neighbor_state(vifi_t vifi, u_int32_t addr); 232 extern int grplst_mem(vifi_t vifi, u_int32_t mcastgrp); 233 extern int scoped_addr(vifi_t vifi, u_int32_t addr); 234 extern void free_all_prunes(void); 235 extern void age_table_entry(void); 236 extern void dump_cache(FILE *fp2); 237 extern void update_lclgrp(vifi_t vifi, u_int32_t mcastgrp); 238 extern void delete_lclgrp(vifi_t vifi, u_int32_t mcastgrp); 239 extern void chkgrp_graft(vifi_t vifi, u_int32_t mcastgrp); 240 extern void accept_graft(u_int32_t src, u_int32_t dst, char *p, 241 int datalen); 242 extern void accept_g_ack(u_int32_t src, u_int32_t dst, char *p, 243 int datalen); 244 /* u_int is promoted u_char */ 245 extern void accept_mtrace(u_int32_t src, u_int32_t dst, 246 u_int32_t group, char *data, u_int no, int datalen); 247 extern void accept_info_request(u_int32_t src, u_int32_t dst, 248 u_char *p, int datalen); 249 extern void accept_info_reply(u_int32_t src, u_int32_t dst, 250 u_char *p, int datalen); 251 252 /* kern.c */ 253 extern void k_set_rcvbuf(int bufsize); 254 extern void k_hdr_include(int bool); 255 extern void k_set_ttl(int t); 256 extern void k_set_loop(int l); 257 extern void k_set_if(u_int32_t ifa); 258 extern void k_join(u_int32_t grp, u_int32_t ifa); 259 extern void k_leave(u_int32_t grp, u_int32_t ifa); 260 extern void k_init_dvmrp(void); 261 extern void k_stop_dvmrp(void); 262 extern void k_add_vif(vifi_t vifi, struct uvif *v); 263 extern void k_del_vif(vifi_t vifi); 264 extern void k_add_rg(u_int32_t origin, struct gtable *g); 265 extern int k_del_rg(u_int32_t origin, struct gtable *g); 266 extern int k_get_version(void); 267 268 #ifdef RSRR 269 /* prune.c */ 270 extern struct gtable *kernel_table; 271 extern struct gtable *gtp; 272 extern int find_src_grp(u_int32_t src, u_int32_t mask, 273 u_int32_t grp); 274 275 /* rsrr.c */ 276 extern void rsrr_init(void); 277 extern void rsrr_read(int f); 278 extern void rsrr_clean(void); 279 extern void rsrr_cache_send(struct gtable *gt, int notify); 280 extern void rsrr_cache_clean(struct gtable *gt); 281 #endif /* RSRR */ 282