2 * The mrouted program is covered by the license in the accompanying file
3 * named "LICENSE". Use of the mrouted program represents acceptance of
4 * the terms and conditions listed in that file.
6 * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
7 * Leland Stanford Junior University.
11 * defs.h,v 3.8.4.15 1998/03/01 02:51:42 fenner Exp
23 #include <sys/param.h>
24 #include <sys/types.h>
25 #include <sys/socket.h>
26 #include <sys/ioctl.h>
30 #define rtentry kern_rtentry /* XXX !!! UGH */
31 #include <net/route.h>
33 #include <netinet/in.h>
34 #include <netinet/in_systm.h>
35 #include <netinet/ip.h>
36 #include <netinet/ip_icmp.h>
37 #include <netinet/igmp.h>
38 #define rtentry kernel_rtentry
39 #include <net/route.h>
41 #include <netinet/ip_mroute.h>
47 typedef u_int u_int32;
49 typedef void (*cfunc_t)(void *);
50 typedef void (*ihfunc_t)(int, fd_set *);
57 #include "pathnames.h"
64 * Miscellaneous constants and macros.
69 #define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
71 #define TIMER_INTERVAL ROUTE_MAX_REPORT_DELAY
73 #define PROTOCOL_VERSION 3 /* increment when packet format/content changes */
74 #define MROUTED_VERSION 9 /* not in DVMRP packets at all */
76 #define DVMRP_CONSTANT 0x000eff00 /* constant portion of 'group' field */
78 #define MROUTED_LEVEL (DVMRP_CONSTANT | PROTOCOL_VERSION)
79 /* for IGMP 'group' field of DVMRP messages */
81 #define LEAF_FLAGS (( vifs_with_neighbors == 1 ) ? 0x010000 : 0)
82 /* more for IGMP 'group' field of DVMRP messages */
84 #define DEL_RTE_GROUP 0
85 #define DEL_ALL_ROUTES 1
86 /* for Deleting kernel table entries */
88 #define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */
91 #define BIT_ZERO(X) ((X) = 0)
92 #define BIT_SET(X,n) ((X) |= 1 << (n))
93 #define BIT_CLR(X,n) ((X) &= ~(1 << (n)))
94 #define BIT_TST(X,n) ((X) & 1 << (n))
100 * External declarations for global variables and functions.
102 #define RECV_BUF_SIZE 8192
103 extern char *recv_buf;
104 extern char *send_buf;
105 extern int igmp_socket;
107 extern int rsrr_socket;
109 extern u_int32 allhosts_group;
110 extern u_int32 allrtrs_group;
111 extern u_int32 dvmrp_group;
112 extern u_int32 dvmrp_genid;
114 #define IF_DEBUG(l) if (debug && debug & (l))
116 #define DEBUG_PKT 0x0001
117 #define DEBUG_PRUNE 0x0002
118 #define DEBUG_ROUTE 0x0004
119 #define DEBUG_PEER 0x0008
120 #define DEBUG_CACHE 0x0010
121 #define DEBUG_TIMEOUT 0x0020
122 #define DEBUG_IF 0x0040
123 #define DEBUG_MEMBER 0x0080
124 #define DEBUG_TRACE 0x0100
125 #define DEBUG_IGMP 0x0200
126 #define DEBUG_RTDETAIL 0x0400
127 #define DEBUG_KERN 0x0800
128 #define DEBUG_RSRR 0x1000
129 #define DEBUG_ICMP 0x2000
131 #define DEFAULT_DEBUG 0x02de /* default if "-d" given without value */
134 extern int did_final_init;
136 extern int routes_changed;
137 extern int delay_change_reports;
138 extern unsigned nroutes;
140 extern struct uvif uvifs[MAXVIFS];
141 extern vifi_t numvifs;
142 extern int vifs_down;
143 extern int udp_socket;
144 extern int vifs_with_neighbors;
152 #define IGMP_PIM 0x14
155 #define IPPROTO_IPIP 4
159 * The original multicast releases defined
160 * IGMP_HOST_{MEMBERSHIP_QUERY,MEMBERSHIP_REPORT,NEW_MEMBERSHIP_REPORT
161 * ,LEAVE_MESSAGE}. Later releases removed the HOST and inserted
162 * the IGMP version number. NetBSD inserted the version number in
163 * a different way. mrouted uses the new names, so we #define them
164 * to the old ones if needed.
166 #if !defined(IGMP_MEMBERSHIP_QUERY) && defined(IGMP_HOST_MEMBERSHIP_QUERY)
167 #define IGMP_MEMBERSHIP_QUERY IGMP_HOST_MEMBERSHIP_QUERY
168 #define IGMP_V2_LEAVE_GROUP IGMP_HOST_LEAVE_MESSAGE
170 #ifndef IGMP_V1_MEMBERSHIP_REPORT
171 #ifdef IGMP_HOST_MEMBERSHIP_REPORT
172 #define IGMP_V1_MEMBERSHIP_REPORT IGMP_HOST_MEMBERSHIP_REPORT
173 #define IGMP_V2_MEMBERSHIP_REPORT IGMP_HOST_NEW_MEMBERSHIP_REPORT
175 #ifdef IGMP_v1_HOST_MEMBERSHIP_REPORT
176 #define IGMP_V1_MEMBERSHIP_REPORT IGMP_v1_HOST_MEMBERSHIP_REPORT
177 #define IGMP_V2_MEMBERSHIP_REPORT IGMP_v2_HOST_MEMBERSHIP_REPORT
182 * NetBSD also renamed the mtrace types.
184 #if !defined(IGMP_MTRACE_RESP) && defined(IGMP_MTRACE_REPLY)
185 #define IGMP_MTRACE_RESP IGMP_MTRACE_REPLY
186 #define IGMP_MTRACE IGMP_MTRACE_QUERY
190 extern char * scaletime __P((u_long));
191 extern void log __P((int, int, char *, ...)) __printflike(3, 4);
192 extern int register_input_handler __P((int, ihfunc_t));
195 extern void init_igmp __P((void));
196 extern void accept_igmp __P((int));
197 extern void build_igmp __P((u_int32, u_int32, int, int, u_int32,
199 extern void send_igmp __P((u_int32, u_int32, int, int, u_int32,
201 extern char * igmp_packet_kind __P((u_int, u_int));
202 extern int igmp_debug_kind __P((u_int, u_int));
205 extern void init_icmp __P((void));
208 extern void init_ipip __P((void));
209 extern void init_ipip_on_vif __P((struct uvif *));
210 extern void send_ipip __P((u_int32, u_int32, int, int, u_int32,
211 int, struct uvif *));
214 extern void callout_init __P((void));
215 extern void free_all_callouts __P((void));
216 extern void age_callout_queue __P((int));
217 extern int timer_nextTimer __P((void));
218 extern int timer_setTimer __P((int, cfunc_t, void *));
219 extern int timer_clearTimer __P((int));
220 extern int timer_leftTimer __P((int));
223 extern void init_routes __P((void));
224 extern void start_route_updates __P((void));
225 extern void update_route __P((u_int32, u_int32, u_int, u_int32,
226 vifi_t, struct listaddr *));
227 extern void age_routes __P((void));
228 extern void expire_all_routes __P((void));
229 extern void free_all_routes __P((void));
230 extern void accept_probe __P((u_int32, u_int32, char *, int,
232 extern void accept_report __P((u_int32, u_int32, char *, int,
234 extern struct rtentry * determine_route __P((u_int32 src));
235 extern void report __P((int, vifi_t, u_int32));
236 extern void report_to_all_neighbors __P((int));
237 extern int report_next_chunk __P((void));
238 extern void blaster_alloc __P((vifi_t));
239 extern void add_vif_to_routes __P((vifi_t));
240 extern void delete_vif_from_routes __P((vifi_t));
241 extern void add_neighbor_to_routes __P((vifi_t, int));
242 extern void delete_neighbor_from_routes __P((u_int32,
244 extern void dump_routes __P((FILE *fp));
247 extern void init_vifs __P((void));
248 extern void zero_vif __P((struct uvif *, int));
249 extern void init_installvifs __P((void));
250 extern void check_vif_state __P((void));
251 extern void send_on_vif __P((struct uvif *, u_int32, int, int));
252 extern vifi_t find_vif __P((u_int32, u_int32));
253 extern void age_vifs __P((void));
254 extern void dump_vifs __P((FILE *));
255 extern void stop_all_vifs __P((void));
256 extern struct listaddr *neighbor_info __P((vifi_t, u_int32));
257 extern void accept_group_report __P((u_int32, u_int32,
259 extern void query_groups __P((void));
260 extern void probe_for_neighbors __P((void));
261 extern struct listaddr *update_neighbor __P((vifi_t, u_int32, int, char *, int,
263 extern void accept_neighbor_request __P((u_int32, u_int32));
264 extern void accept_neighbor_request2 __P((u_int32, u_int32));
265 extern void accept_info_request __P((u_int32, u_int32,
267 extern void accept_info_reply __P((u_int32, u_int32,
269 extern void accept_neighbors __P((u_int32, u_int32,
270 u_char *, int, u_int32));
271 extern void accept_neighbors2 __P((u_int32, u_int32,
272 u_char *, int, u_int32));
273 extern void accept_leave_message __P((u_int32, u_int32,
275 extern void accept_membership_query __P((u_int32, u_int32,
279 extern void config_vifs_from_kernel __P((void));
282 extern void config_vifs_from_file __P((void));
285 extern int inet_valid_host __P((u_int32));
286 extern int inet_valid_mask __P((u_int32));
287 extern int inet_valid_subnet __P((u_int32, u_int32));
288 extern char * inet_fmt __P((u_int32, char *));
289 extern char * inet_fmts __P((u_int32, u_int32, char *));
290 extern u_int32 inet_parse __P((char *, int));
291 extern int inet_cksum __P((u_short *, u_int));
294 extern unsigned kroutes;
295 extern void determine_forwvifs __P((struct gtable *));
296 extern void send_prune_or_graft __P((struct gtable *));
297 extern void add_table_entry __P((u_int32, u_int32));
298 extern void del_table_entry __P((struct rtentry *,
300 extern void update_table_entry __P((struct rtentry *, u_int32));
301 extern int find_src_grp __P((u_int32, u_int32, u_int32));
302 extern void init_ktable __P((void));
303 extern void steal_sources __P((struct rtentry *));
304 extern void reset_neighbor_state __P((vifi_t, u_int32));
305 extern int grplst_mem __P((vifi_t, u_int32));
306 extern void free_all_prunes __P((void));
307 extern void age_table_entry __P((void));
308 extern void dump_cache __P((FILE *));
309 extern void update_lclgrp __P((vifi_t, u_int32));
310 extern void delete_lclgrp __P((vifi_t, u_int32));
311 extern void chkgrp_graft __P((vifi_t, u_int32));
312 extern void accept_prune __P((u_int32, u_int32, char *, int));
313 extern void accept_graft __P((u_int32, u_int32, char *, int));
314 extern void accept_g_ack __P((u_int32, u_int32, char *, int));
315 /* u_int is promoted u_char */
316 extern void accept_mtrace __P((u_int32, u_int32,
317 u_int32, char *, u_int, int));
320 extern void k_set_rcvbuf __P((int, int));
321 extern void k_hdr_include __P((int));
322 extern void k_set_ttl __P((int));
323 extern void k_set_loop __P((int));
324 extern void k_set_if __P((u_int32));
325 extern void k_join __P((u_int32, u_int32));
326 extern void k_leave __P((u_int32, u_int32));
327 extern void k_init_dvmrp __P((void));
328 extern void k_stop_dvmrp __P((void));
329 extern void k_add_vif __P((vifi_t, struct uvif *));
330 extern void k_del_vif __P((vifi_t));
331 extern void k_add_rg __P((u_int32, struct gtable *));
332 extern int k_del_rg __P((u_int32, struct gtable *));
333 extern int k_get_version __P((void));
337 extern struct gtable * find_grp __P((u_int32));
338 extern struct stable * find_grp_src __P((struct gtable *, u_int32));
339 extern int next_grp_src_mask __P((struct gtable **,
340 struct stable **, u_int32,
342 extern void refresh_sg __P((struct sioc_sg_req *, struct gtable *,
344 extern int next_child __P((struct gtable **, struct stable **,
345 u_int32, u_int32, u_int32,
349 extern struct rtentry * snmp_find_route __P((u_int32, u_int32));
350 extern int next_route __P((struct rtentry **, u_int32, u_int32));
351 extern int next_route_child __P((struct rtentry **,
352 u_int32, u_int32, vifi_t *));
357 extern struct gtable *kernel_table;
358 extern struct gtable *gtp;
361 extern void rsrr_init __P((void));
362 extern void rsrr_clean __P((void));
363 extern void rsrr_cache_send __P((struct gtable *, int));
364 extern void rsrr_cache_clean __P((struct gtable *));