1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)defs.h 8.1 (Berkeley) 6/5/93 30 * 31 * $FreeBSD: src/sbin/routed/defs.h,v 1.13 1999/09/05 17:49:11 peter Exp $ 32 */ 33 34 /* Definitions for RIPv2 routing process. 35 * 36 * This code is based on the 4.4BSD `routed` daemon, with extensions to 37 * support: 38 * RIPv2, including variable length subnet masks. 39 * Router Discovery 40 * aggregate routes in the kernel tables. 41 * aggregate advertised routes. 42 * maintain spare routes for faster selection of another gateway 43 * when the current gateway dies. 44 * timers on routes with second granularity so that selection 45 * of a new route does not wait 30-60 seconds. 46 * tolerance of static routes. 47 * tell the kernel hop counts 48 * do not advertise if ipforwarding=0 49 * 50 * The vestigial support for other protocols has been removed. There 51 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 52 * other protocols. The result is far smaller, faster, cleaner, and 53 * perhaps understandable. 54 * 55 * The accumulation of special flags and kludges added over the many 56 * years have been simplified and integrated. 57 */ 58 59 #include <stdio.h> 60 #include <netdb.h> 61 #include <stdlib.h> 62 #include <unistd.h> 63 #include <errno.h> 64 #include <string.h> 65 #include <stdarg.h> 66 #include <syslog.h> 67 #include <time.h> 68 #include <sys/cdefs.h> 69 #include <sys/time.h> 70 #include <sys/types.h> 71 #include <sys/param.h> 72 #include <sys/ioctl.h> 73 #include <sys/sysctl.h> 74 #include <sys/socket.h> 75 #include <net/if.h> 76 #include <net/route.h> 77 #include <net/if_dl.h> 78 #include <netinet/in.h> 79 #include <arpa/inet.h> 80 #define RIPVERSION RIPv2 81 #include <protocols/routed.h> 82 #include <openssl/md5.h> 83 84 85 /* Type of an IP address. 86 * Some systems do not like to pass structures, so do not use in_addr. 87 * Some systems think a long has 64 bits, which would be a gross waste. 88 * So define it here so it can be changed for the target system. 89 * It should be defined somewhere netinet/in.h, but it is not. 90 */ 91 #if defined (__NetBSD__) 92 #define naddr u_int32_t 93 #else 94 #define naddr u_long 95 #endif 96 97 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 98 * the dstaddr of point-to-point interfaces. 99 */ 100 #ifdef __NetBSD__ 101 #define MCAST_PPP_BUG 102 #endif 103 104 #define DAY (24*60*60) 105 #define NEVER DAY /* a long time */ 106 #define EPOCH NEVER /* bias time by this to avoid <0 */ 107 108 /* Scan the kernel regularly to see if any interfaces have appeared or been 109 * turned off. These must be less than STALE_TIME. 110 */ 111 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 112 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 113 #define CHECK_QUIET_INTERVAL 300 /* when not */ 114 115 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 116 117 /* Metric used for fake default routes. It ought to be 15, but when 118 * processing advertised routes, previous versions of `routed` added 119 * to the received metric and discarded the route if the total was 16 120 * or larger. 121 */ 122 #define FAKE_METRIC (HOPCNT_INFINITY-2) 123 124 125 /* Router Discovery parameters */ 126 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 127 #define MaxMaxAdvertiseInterval 1800 128 #define MinMaxAdvertiseInterval 4 129 #define DefMaxAdvertiseInterval 600 130 #define DEF_PreferenceLevel 0 131 #define MIN_PreferenceLevel 0x80000000 132 133 #define MAX_INITIAL_ADVERT_INTERVAL 16 134 #define MAX_INITIAL_ADVERTS 3 135 #define MAX_RESPONSE_DELAY 2 136 137 #define MAX_SOLICITATION_DELAY 1 138 #define SOLICITATION_INTERVAL 3 139 #define MAX_SOLICITATIONS 3 140 141 142 /* Bloated packet size for systems that simply add authentication to 143 * full-sized packets 144 */ 145 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 146 /* typical packet buffers */ 147 union pkt_buf { 148 char packet[OVER_MAXPACKETSIZE*2]; 149 struct rip rip; 150 }; 151 152 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 153 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 154 #define IF_NAME_LEN (GNAME_LEN+15) 155 156 /* No more routes than this, to protect ourself in case something goes 157 * whacko and starts broadcasting zillions of bogus routes. 158 */ 159 #define MAX_ROUTES (128*1024) 160 extern int total_routes; 161 162 /* Main, daemon routing table structure 163 */ 164 struct rt_entry { 165 struct radix_node rt_nodes[2]; /* radix tree glue */ 166 u_int rt_state; 167 # define RS_IF 0x001 /* for network interface */ 168 # define RS_NET_INT 0x002 /* authority route */ 169 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 170 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 171 # define RS_SUBNET 0x008 /* subnet route from any source */ 172 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 173 # define RS_MHOME 0x020 /* from -m */ 174 # define RS_STATIC 0x040 /* from the kernel */ 175 # define RS_RDISC 0x080 /* from router discovery */ 176 struct sockaddr_in rt_dst_sock; 177 naddr rt_mask; 178 struct rt_spare { 179 struct interface *rts_ifp; 180 naddr rts_gate; /* forward packets here */ 181 naddr rts_router; /* on the authority of this router */ 182 char rts_metric; 183 u_short rts_tag; 184 time_t rts_time; /* timer to junk stale routes */ 185 u_int rts_de_ag; /* de-aggregation level */ 186 #define NUM_SPARES 4 187 } rt_spares[NUM_SPARES]; 188 u_int rt_seqno; /* when last changed */ 189 char rt_poison_metric; /* to notice maximum recently */ 190 time_t rt_poison_time; /* advertised metric */ 191 }; 192 #define rt_dst rt_dst_sock.sin_addr.s_addr 193 #define rt_ifp rt_spares[0].rts_ifp 194 #define rt_gate rt_spares[0].rts_gate 195 #define rt_router rt_spares[0].rts_router 196 #define rt_metric rt_spares[0].rts_metric 197 #define rt_tag rt_spares[0].rts_tag 198 #define rt_time rt_spares[0].rts_time 199 #define rt_de_ag rt_spares[0].rts_de_ag 200 201 #define HOST_MASK 0xffffffff 202 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 203 204 /* age all routes that 205 * are not from -g, -m, or static routes from the kernel 206 * not unbroken interface routes 207 * but not broken interfaces 208 * nor non-passive, remote interfaces that are not aliases 209 * (i.e. remote & metric=0) 210 */ 211 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 212 | RS_NET_SYN | RS_RDISC)) \ 213 && (!((rt_state) & RS_IF) \ 214 || (ifp) == 0 \ 215 || (((ifp)->int_state & IS_REMOTE) \ 216 && !((ifp)->int_state & IS_PASSIVE)))) 217 218 /* true if A is better than B 219 * Better if 220 * - A is not a poisoned route 221 * - and A is not stale 222 * - and A has a shorter path 223 * - or is the router speaking for itself 224 * - or the current route is equal but stale 225 * - or it is a host route advertised by a system for itself 226 */ 227 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 228 && now_stale <= (A)->rts_time \ 229 && ((A)->rts_metric < (B)->rts_metric \ 230 || ((A)->rts_gate == (A)->rts_router \ 231 && (B)->rts_gate != (B)->rts_router) \ 232 || ((A)->rts_metric == (B)->rts_metric \ 233 && now_stale > (B)->rts_time) \ 234 || (RT_ISHOST(rt) \ 235 && (rt)->rt_dst == (A)->rts_router \ 236 && (A)->rts_metric == (B)->rts_metric))) 237 238 239 /* An "interface" is similar to a kernel ifnet structure, except it also 240 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 241 */ 242 struct interface { 243 struct interface *int_next, **int_prev; 244 struct interface *int_ahash, **int_ahash_prev; 245 struct interface *int_bhash, **int_bhash_prev; 246 struct interface *int_rlink, **int_rlink_prev; 247 struct interface *int_nhash, **int_nhash_prev; 248 char int_name[IF_NAME_LEN+1]; 249 u_short int_index; 250 naddr int_addr; /* address on this host (net order) */ 251 naddr int_brdaddr; /* broadcast address (n) */ 252 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 253 naddr int_net; /* working network # (host order)*/ 254 naddr int_mask; /* working net mask (host order) */ 255 naddr int_ripv1_mask; /* for inferring a mask (n) */ 256 naddr int_std_addr; /* class A/B/C address (n) */ 257 naddr int_std_net; /* class A/B/C network (h) */ 258 naddr int_std_mask; /* class A/B/C netmask (h) */ 259 int int_rip_sock; /* for queries */ 260 int int_if_flags; /* some bits copied from kernel */ 261 u_int int_state; 262 time_t int_act_time; /* last thought healthy */ 263 time_t int_query_time; 264 u_short int_transitions; /* times gone up-down */ 265 char int_metric; 266 char int_d_metric; /* for faked default route */ 267 struct int_data { 268 u_int ipackets; /* previous network stats */ 269 u_int ierrors; 270 u_int opackets; 271 u_int oerrors; 272 time_t ts; /* timestamp on network stats */ 273 } int_data; 274 # define MAX_AUTH_KEYS 5 275 struct auth { /* authentication info */ 276 u_int16_t type; 277 u_char key[RIP_AUTH_PW_LEN]; 278 u_char keyid; 279 time_t start, end; 280 } int_auth[MAX_AUTH_KEYS]; 281 /* router discovery parameters */ 282 int int_rdisc_pref; /* signed preference to advertise */ 283 int int_rdisc_int; /* MaxAdvertiseInterval */ 284 int int_rdisc_cnt; 285 struct timeval int_rdisc_timer; 286 }; 287 288 /* bits in int_state */ 289 #define IS_ALIAS 0x0000001 /* interface alias */ 290 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 291 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 292 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 293 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 294 #define IS_CHECKED 0x0000020 /* still exists */ 295 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 296 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 297 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 298 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 299 #define IS_BROKE 0x0000400 /* seems to be broken */ 300 #define IS_SICK 0x0000800 /* seems to be broken */ 301 #define IS_DUP 0x0001000 /* has a duplicate address */ 302 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 303 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 304 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 305 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 306 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 307 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 308 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 309 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 310 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 311 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 312 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 313 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 314 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 315 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 316 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 317 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 318 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 319 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 320 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 321 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 322 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 323 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 324 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 325 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 326 327 #define iff_up(f) ((f) & IFF_UP) 328 329 330 /* Information for aggregating routes */ 331 #define NUM_AG_SLOTS 32 332 struct ag_info { 333 struct ag_info *ag_fine; /* slot with finer netmask */ 334 struct ag_info *ag_cors; /* more coarse netmask */ 335 naddr ag_dst_h; /* destination in host byte order */ 336 naddr ag_mask; 337 naddr ag_gate; 338 naddr ag_nhop; 339 char ag_metric; /* metric to be advertised */ 340 char ag_pref; /* aggregate based on this */ 341 u_int ag_seqno; 342 u_short ag_tag; 343 u_short ag_state; 344 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 345 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 346 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 347 #define AGS_REDUN1 0x008 348 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 349 == (AGS_REDUN0 | AGS_REDUN1)) 350 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 351 #define AGS_IF 0x020 /* for an interface */ 352 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 353 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 354 * has the finer netmask */ 355 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 356 * has the coarser netmasks */ 357 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 358 359 /* some bits are set if they are set on either route */ 360 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 361 AGS_SUPPRESS | AGS_CORS_GATE) 362 }; 363 364 365 /* parameters for interfaces */ 366 extern struct parm { 367 struct parm *parm_next; 368 char parm_name[IF_NAME_LEN+1]; 369 naddr parm_net; 370 naddr parm_mask; 371 372 char parm_d_metric; 373 u_int parm_int_state; 374 int parm_rdisc_pref; /* signed IRDP preference */ 375 int parm_rdisc_int; /* IRDP advertising interval */ 376 struct auth parm_auth[MAX_AUTH_KEYS]; 377 } *parms; 378 379 /* authority for internal networks */ 380 extern struct intnet { 381 struct intnet *intnet_next; 382 naddr intnet_addr; /* network byte order */ 383 naddr intnet_mask; 384 char intnet_metric; 385 } *intnets; 386 387 /* defined RIPv1 netmasks */ 388 extern struct r1net { 389 struct r1net *r1net_next; 390 naddr r1net_net; /* host order */ 391 naddr r1net_match; 392 naddr r1net_mask; 393 } *r1nets; 394 395 /* trusted routers */ 396 extern struct tgate { 397 struct tgate *tgate_next; 398 naddr tgate_addr; 399 #define MAX_TGATE_NETS 32 400 struct tgate_net { 401 naddr net; /* host order */ 402 naddr mask; 403 } tgate_nets[MAX_TGATE_NETS]; 404 } *tgates; 405 406 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 407 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 408 409 /* common output buffers */ 410 extern struct ws_buf { 411 struct rip *buf; 412 struct netinfo *n; 413 struct netinfo *base; 414 struct netinfo *lim; 415 enum output_type type; 416 } v12buf, v2buf; 417 418 extern pid_t mypid; 419 extern naddr myaddr; /* main address of this system */ 420 421 extern int stopint; /* !=0 to stop */ 422 423 extern int sock_max; 424 extern int rip_sock; /* RIP socket */ 425 extern struct interface *rip_sock_mcast; /* current multicast interface */ 426 extern int rt_sock; /* routing socket */ 427 extern int rt_sock_seqno; 428 extern int rdisc_sock; /* router-discovery raw socket */ 429 430 extern int seqno; /* sequence number for messages */ 431 extern int supplier; /* process should supply updates */ 432 extern int supplier_set; /* -s or -q requested */ 433 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 434 extern int ridhosts; /* 1=reduce host routes */ 435 extern int mhome; /* 1=want multi-homed host route */ 436 extern int advertise_mhome; /* 1=must continue advertising it */ 437 extern int auth_ok; /* 1=ignore auth if we do not care */ 438 439 extern struct timeval clk; /* system clock's idea of time */ 440 extern struct timeval epoch; /* system clock when started */ 441 extern struct timeval now; /* current idea of time */ 442 extern time_t now_stale; 443 extern time_t now_expire; 444 extern time_t now_garbage; 445 446 extern struct timeval next_bcast; /* next general broadcast */ 447 extern struct timeval age_timer; /* next check of old routes */ 448 extern struct timeval no_flash; /* inhibit flash update until then */ 449 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 450 extern int rdisc_ok; /* using solicited route */ 451 452 extern struct timeval ifinit_timer; /* time to check interfaces */ 453 454 extern naddr loopaddr; /* our address on loopback */ 455 extern int tot_interfaces; /* # of remote and local interfaces */ 456 extern int rip_interfaces; /* # of interfaces doing RIP */ 457 extern struct interface *ifnet; /* all interfaces */ 458 extern struct interface *remote_if; /* remote interfaces */ 459 extern int have_ripv1_out; /* have a RIPv1 interface */ 460 extern int have_ripv1_in; 461 extern int need_flash; /* flash update needed */ 462 extern struct timeval need_kern; /* need to update kernel table */ 463 extern u_int update_seqno; /* a route has changed */ 464 465 extern int tracelevel, new_tracelevel; 466 #define MAX_TRACELEVEL 4 467 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 468 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 469 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 470 #define TRACEACTIONS (tracelevel != 0) 471 extern FILE *ftrace; /* output trace file */ 472 extern char inittracename[MAXPATHLEN+1]; 473 474 extern struct radix_node_head *rhead; 475 476 477 extern void fix_sock(int, const char *); 478 extern void fix_select(void); 479 extern void rip_off(void); 480 extern void rip_on(struct interface *); 481 482 extern void bufinit(void); 483 extern int output(enum output_type, struct sockaddr_in *, 484 struct interface *, struct rip *, int); 485 extern void clr_ws_buf(struct ws_buf *, struct auth *); 486 extern void rip_query(void); 487 extern void rip_bcast(int); 488 extern void supply(struct sockaddr_in *, struct interface *, 489 enum output_type, int, int, int); 490 491 extern void msglog(const char *, ...) __printflike(1, 2); 492 struct msg_limit { 493 time_t reuse; 494 struct msg_sub { 495 naddr addr; 496 time_t until; 497 # define MSG_SUBJECT_N 8 498 } subs[MSG_SUBJECT_N]; 499 }; 500 extern void msglim(struct msg_limit *, naddr, 501 const char *, ...) __printflike(3, 4); 502 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 503 extern void logbad(int, const char *, ...) __dead2 __printflike(2, 3); 504 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 505 #ifdef DEBUG 506 #define DBGERR(dump,msg) BADERR(dump,msg) 507 #else 508 #define DBGERR(dump,msg) LOGERR(msg) 509 #endif 510 extern char *naddr_ntoa(naddr); 511 extern const char *saddr_ntoa(struct sockaddr *); 512 513 extern void *rtmalloc(size_t, const char *); 514 extern void timevaladd(struct timeval *, struct timeval *); 515 extern void intvl_random(struct timeval *, u_long, u_long); 516 extern int getnet(char *, naddr *, naddr *); 517 extern int gethost(char *, naddr *); 518 extern void gwkludge(void); 519 extern const char *parse_parms(char *, int); 520 extern const char *check_parms(struct parm *); 521 extern void get_parms(struct interface *); 522 523 extern void lastlog(void); 524 extern void trace_close(int); 525 extern void set_tracefile(const char *, const char *, int); 526 extern void tracelevel_msg(const char *, int); 527 extern void trace_off(const char*, ...) __printflike(1, 2); 528 extern void set_tracelevel(void); 529 extern void trace_flush(void); 530 extern void trace_misc(const char *, ...) __printflike(1, 2); 531 extern void trace_act(const char *, ...) __printflike(1, 2); 532 extern void trace_pkt(const char *, ...) __printflike(1, 2); 533 extern void trace_add_del(const char *, struct rt_entry *); 534 extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 535 const char *); 536 extern void trace_if(const char *, struct interface *); 537 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 538 struct rt_spare *); 539 extern void trace_rip(const char*, const char*, struct sockaddr_in *, 540 struct interface *, struct rip *, int); 541 extern char *addrname(naddr, naddr, int); 542 extern char *rtname(naddr, naddr, naddr); 543 544 extern void rdisc_age(naddr); 545 extern void set_rdisc_mg(struct interface *, int); 546 extern void set_supplier(void); 547 extern void if_bad_rdisc(struct interface *); 548 extern void if_ok_rdisc(struct interface *); 549 extern void read_rip(int, struct interface *); 550 extern void read_rt(void); 551 extern void read_d(void); 552 extern void rdisc_adv(void); 553 extern void rdisc_sol(void); 554 555 extern void sigalrm(int); 556 extern void sigterm(int); 557 558 extern void sigtrace_on(int); 559 extern void sigtrace_off(int); 560 561 extern void flush_kern(void); 562 extern void age(naddr); 563 564 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 565 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 566 u_short, u_short, void (*)(struct ag_info *)); 567 extern void del_static(naddr, naddr, naddr, int); 568 extern void del_redirects(naddr, time_t); 569 extern struct rt_entry *rtget(naddr, naddr); 570 extern struct rt_entry *rtfind(naddr); 571 extern void rtinit(void); 572 extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 573 extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 574 extern void rtdelete(struct rt_entry *); 575 extern void rts_delete(struct rt_entry *, struct rt_spare *); 576 extern void rtbad_sub(struct rt_entry *); 577 extern void rtswitch(struct rt_entry *, struct rt_spare *); 578 extern void rtbad(struct rt_entry *); 579 580 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 581 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 582 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 583 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 584 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 585 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 586 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 587 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 588 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 589 int); 590 591 extern naddr std_mask(naddr); 592 extern naddr ripv1_mask_net(naddr, struct interface *); 593 extern naddr ripv1_mask_host(naddr,struct interface *); 594 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 595 extern int check_dst(naddr); 596 extern struct interface *check_dup(naddr, naddr, naddr, int); 597 extern int check_remote(struct interface *); 598 extern int addrouteforif(struct interface *); 599 extern void ifinit(void); 600 extern int walk_bad(struct radix_node *, void *); 601 extern int if_ok(struct interface *, const char *); 602 extern void if_sick(struct interface *); 603 extern void if_bad(struct interface *); 604 extern void if_link(struct interface *); 605 extern struct interface *ifwithaddr(naddr, int, int); 606 extern struct interface *ifwithname(char *, naddr); 607 extern struct interface *ifwithindex(u_short, int); 608 extern struct interface *iflookup(naddr); 609 610 extern struct auth *find_auth(struct interface *); 611 extern void end_md5_auth(struct ws_buf *, struct auth *); 612