1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)defs.h 8.1 (Berkeley) 6/5/93 32 * 33 * $FreeBSD$ 34 */ 35 36 37 /* Definitions for RIPv2 routing process. 38 * 39 * This code is based on the 4.4BSD `routed` daemon, with extensions to 40 * support: 41 * RIPv2, including variable length subnet masks. 42 * Router Discovery 43 * aggregate routes in the kernel tables. 44 * aggregate advertised routes. 45 * maintain spare routes for faster selection of another gateway 46 * when the current gateway dies. 47 * timers on routes with second granularity so that selection 48 * of a new route does not wait 30-60 seconds. 49 * tolerance of static routes. 50 * tell the kernel hop counts 51 * do not advertise if ipforwarding=0 52 * 53 * The vestigial support for other protocols has been removed. There 54 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 55 * other protocols. The result is far smaller, faster, cleaner, and 56 * perhaps understandable. 57 * 58 * The accumulation of special flags and kludges added over the many 59 * years have been simplified and integrated. 60 */ 61 62 #include <assert.h> 63 #include <stdio.h> 64 #include <netdb.h> 65 #include <stdlib.h> 66 #include <unistd.h> 67 #include <errno.h> 68 #include <string.h> 69 #include <stdarg.h> 70 #include <syslog.h> 71 #include <time.h> 72 #include <sys/cdefs.h> 73 #include <sys/time.h> 74 #include <sys/types.h> 75 #include <sys/param.h> 76 #include <sys/ioctl.h> 77 #include <sys/sysctl.h> 78 #include <sys/socket.h> 79 #include <sys/queue.h> 80 #include "radix.h" 81 #define UNUSED __attribute__((unused)) 82 #define PATTRIB(f,l) __attribute__((format (printf,f,l))) 83 #include <net/if.h> 84 #include <net/route.h> 85 #include <net/if_dl.h> 86 #include <netinet/in.h> 87 #include <arpa/inet.h> 88 #define RIPVERSION RIPv2 89 #include <protocols/routed.h> 90 91 #ifndef __RCSID 92 #define __RCSID(_s) static const char rcsid[] UNUSED = _s 93 #endif 94 #ifndef __COPYRIGHT 95 #define __COPYRIGHT(_s) static const char copyright[] UNUSED = _s 96 #endif 97 98 /* Type of an IP address. 99 * Some systems do not like to pass structures, so do not use in_addr. 100 * Some systems think a long has 64 bits, which would be a gross waste. 101 * So define it here so it can be changed for the target system. 102 * It should be defined somewhere netinet/in.h, but it is not. 103 */ 104 #define naddr u_long 105 #define _HAVE_SA_LEN 106 #define _HAVE_SIN_LEN 107 108 #define DAY (24*60*60) 109 #define NEVER DAY /* a long time */ 110 #define EPOCH NEVER /* bias time by this to avoid <0 */ 111 112 /* Scan the kernel regularly to see if any interfaces have appeared or been 113 * turned off. These must be less than STALE_TIME. 114 */ 115 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 116 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 117 #define CHECK_QUIET_INTERVAL 300 /* when not */ 118 119 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 120 121 /* Metric used for fake default routes. It ought to be 15, but when 122 * processing advertised routes, previous versions of `routed` added 123 * to the received metric and discarded the route if the total was 16 124 * or larger. 125 */ 126 #define FAKE_METRIC (HOPCNT_INFINITY-2) 127 128 129 /* Router Discovery parameters */ 130 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 131 #define MaxMaxAdvertiseInterval 1800 132 #define MinMaxAdvertiseInterval 4 133 #define DefMaxAdvertiseInterval 600 134 #define MIN_PreferenceLevel 0x80000000 135 136 #define MAX_INITIAL_ADVERT_INTERVAL 16 137 #define MAX_INITIAL_ADVERTS 3 138 139 #define MAX_SOLICITATION_DELAY 1 140 #define SOLICITATION_INTERVAL 3 141 #define MAX_SOLICITATIONS 3 142 143 144 /* Bloated packet size for systems that simply add authentication to 145 * full-sized packets 146 */ 147 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 148 /* typical packet buffers */ 149 union pkt_buf { 150 char packet[OVER_MAXPACKETSIZE*2]; 151 struct rip rip; 152 }; 153 154 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 155 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 156 #define IF_NAME_LEN (GNAME_LEN+15) 157 158 /* No more routes than this, to protect ourself in case something goes 159 * whacko and starts broadcasting zillions of bogus routes. 160 */ 161 #define MAX_ROUTES (128*1024) 162 extern int total_routes; 163 164 /* Main, daemon routing table structure 165 */ 166 struct rt_entry { 167 struct radix_node rt_nodes[2]; /* radix tree glue */ 168 u_int rt_state; 169 # define RS_IF 0x001 /* for network interface */ 170 # define RS_NET_INT 0x002 /* authority route */ 171 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 172 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 173 # define RS_SUBNET 0x008 /* subnet route from any source */ 174 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 175 # define RS_MHOME 0x020 /* from -m */ 176 # define RS_STATIC 0x040 /* from the kernel */ 177 # define RS_RDISC 0x080 /* from router discovery */ 178 struct sockaddr_in rt_dst_sock; 179 naddr rt_mask; 180 struct rt_spare { 181 struct interface *rts_ifp; 182 naddr rts_gate; /* forward packets here */ 183 naddr rts_router; /* on the authority of this router */ 184 char rts_metric; 185 u_short rts_tag; 186 time_t rts_time; /* timer to junk stale routes */ 187 u_int rts_de_ag; /* de-aggregation level */ 188 #define NUM_SPARES 4 189 } rt_spares[NUM_SPARES]; 190 u_int rt_seqno; /* when last changed */ 191 char rt_poison_metric; /* to notice maximum recently */ 192 time_t rt_poison_time; /* advertised metric */ 193 }; 194 #define rt_dst rt_dst_sock.sin_addr.s_addr 195 #define rt_ifp rt_spares[0].rts_ifp 196 #define rt_gate rt_spares[0].rts_gate 197 #define rt_router rt_spares[0].rts_router 198 #define rt_metric rt_spares[0].rts_metric 199 #define rt_tag rt_spares[0].rts_tag 200 #define rt_time rt_spares[0].rts_time 201 #define rt_de_ag rt_spares[0].rts_de_ag 202 203 #define HOST_MASK 0xffffffff 204 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 205 206 /* age all routes that 207 * are not from -g, -m, or static routes from the kernel 208 * not unbroken interface routes 209 * but not broken interfaces 210 * nor non-passive, remote interfaces that are not aliases 211 * (i.e. remote & metric=0) 212 */ 213 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 214 | RS_NET_SYN | RS_RDISC)) \ 215 && (!((rt_state) & RS_IF) \ 216 || (ifp) == 0 \ 217 || (((ifp)->int_state & IS_REMOTE) \ 218 && !((ifp)->int_state & IS_PASSIVE)))) 219 220 /* true if A is better than B 221 * Better if 222 * - A is not a poisoned route 223 * - and A is not stale 224 * - and A has a shorter path 225 * - or is the router speaking for itself 226 * - or the current route is equal but stale 227 * - or it is a host route advertised by a system for itself 228 */ 229 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 230 && now_stale <= (A)->rts_time \ 231 && ((A)->rts_metric < (B)->rts_metric \ 232 || ((A)->rts_gate == (A)->rts_router \ 233 && (B)->rts_gate != (B)->rts_router) \ 234 || ((A)->rts_metric == (B)->rts_metric \ 235 && now_stale > (B)->rts_time) \ 236 || (RT_ISHOST(rt) \ 237 && (rt)->rt_dst == (A)->rts_router \ 238 && (A)->rts_metric == (B)->rts_metric))) 239 240 241 /* An "interface" is similar to a kernel ifnet structure, except it also 242 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 243 */ 244 struct interface { 245 LIST_ENTRY(interface) int_list; 246 LIST_ENTRY(interface) remote_list; 247 struct interface *int_ahash, **int_ahash_prev; 248 struct interface *int_bhash, **int_bhash_prev; 249 struct interface *int_nhash, **int_nhash_prev; 250 char int_name[IF_NAME_LEN+1]; 251 u_short int_index; 252 naddr int_addr; /* address on this host (net order) */ 253 naddr int_brdaddr; /* broadcast address (n) */ 254 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 255 naddr int_net; /* working network # (host order)*/ 256 naddr int_mask; /* working net mask (host order) */ 257 naddr int_ripv1_mask; /* for inferring a mask (n) */ 258 naddr int_std_addr; /* class A/B/C address (n) */ 259 naddr int_std_net; /* class A/B/C network (h) */ 260 naddr int_std_mask; /* class A/B/C netmask (h) */ 261 int int_rip_sock; /* for queries */ 262 int int_if_flags; /* some bits copied from kernel */ 263 u_int int_state; 264 time_t int_act_time; /* last thought healthy */ 265 time_t int_query_time; 266 u_short int_transitions; /* times gone up-down */ 267 char int_metric; 268 u_char int_d_metric; /* for faked default route */ 269 u_char int_adj_inmetric; /* adjust advertised metrics */ 270 u_char int_adj_outmetric; /* instead of interface metric */ 271 struct int_data { 272 u_int ipackets; /* previous network stats */ 273 u_int ierrors; 274 u_int opackets; 275 u_int oerrors; 276 time_t ts; /* timestamp on network stats */ 277 } int_data; 278 # define MAX_AUTH_KEYS 5 279 struct auth { /* authentication info */ 280 u_int16_t type; 281 u_char key[RIP_AUTH_PW_LEN]; 282 u_char keyid; 283 time_t start, end; 284 } int_auth[MAX_AUTH_KEYS]; 285 /* router discovery parameters */ 286 int int_rdisc_pref; /* signed preference to advertise */ 287 int int_rdisc_int; /* MaxAdvertiseInterval */ 288 int int_rdisc_cnt; 289 struct timeval int_rdisc_timer; 290 }; 291 292 /* bits in int_state */ 293 #define IS_ALIAS 0x0000001 /* interface alias */ 294 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 295 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 296 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 297 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 298 #define IS_CHECKED 0x0000020 /* still exists */ 299 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 300 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 301 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 302 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 303 #define IS_BROKE 0x0000400 /* seems to be broken */ 304 #define IS_SICK 0x0000800 /* seems to be broken */ 305 #define IS_DUP 0x0001000 /* has a duplicate address */ 306 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 307 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 308 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 309 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 310 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 311 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 312 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 313 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 314 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 315 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 316 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 317 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 318 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 319 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 320 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 321 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 322 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 323 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 324 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 325 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 326 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 327 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 328 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 329 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 330 331 #define iff_up(f) ((f) & IFF_UP) 332 333 LIST_HEAD(ifhead, interface); 334 335 /* Information for aggregating routes */ 336 #define NUM_AG_SLOTS 32 337 struct ag_info { 338 struct ag_info *ag_fine; /* slot with finer netmask */ 339 struct ag_info *ag_cors; /* more coarse netmask */ 340 naddr ag_dst_h; /* destination in host byte order */ 341 naddr ag_mask; 342 naddr ag_gate; 343 naddr ag_nhop; 344 char ag_metric; /* metric to be advertised */ 345 char ag_pref; /* aggregate based on this */ 346 u_int ag_seqno; 347 u_short ag_tag; 348 u_short ag_state; 349 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 350 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 351 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 352 #define AGS_REDUN1 0x008 353 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 354 == (AGS_REDUN0 | AGS_REDUN1)) 355 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 356 #define AGS_IF 0x020 /* for an interface */ 357 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 358 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 359 * has the finer netmask */ 360 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 361 * has the coarser netmasks */ 362 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 363 364 /* some bits are set if they are set on either route */ 365 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 366 AGS_SUPPRESS | AGS_CORS_GATE) 367 }; 368 369 370 /* parameters for interfaces */ 371 struct parm { 372 struct parm *parm_next; 373 char parm_name[IF_NAME_LEN+1]; 374 naddr parm_net; 375 naddr parm_mask; 376 377 u_char parm_d_metric; 378 u_char parm_adj_inmetric; 379 char parm_adj_outmetric; 380 u_int parm_int_state; 381 int parm_rdisc_pref; /* signed IRDP preference */ 382 int parm_rdisc_int; /* IRDP advertising interval */ 383 struct auth parm_auth[MAX_AUTH_KEYS]; 384 }; 385 386 /* authority for internal networks */ 387 extern struct intnet { 388 struct intnet *intnet_next; 389 naddr intnet_addr; /* network byte order */ 390 naddr intnet_mask; 391 char intnet_metric; 392 } *intnets; 393 394 /* defined RIPv1 netmasks */ 395 extern struct r1net { 396 struct r1net *r1net_next; 397 naddr r1net_net; /* host order */ 398 naddr r1net_match; 399 naddr r1net_mask; 400 } *r1nets; 401 402 /* trusted routers */ 403 extern struct tgate { 404 struct tgate *tgate_next; 405 naddr tgate_addr; 406 #define MAX_TGATE_NETS 32 407 struct tgate_net { 408 naddr net; /* host order */ 409 naddr mask; 410 } tgate_nets[MAX_TGATE_NETS]; 411 } *tgates; 412 413 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 414 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 415 416 /* common output buffers */ 417 extern struct ws_buf { 418 struct rip *buf; 419 struct netinfo *n; 420 struct netinfo *base; 421 struct netinfo *lim; 422 enum output_type type; 423 } v12buf; 424 425 extern pid_t mypid; 426 extern naddr myaddr; /* main address of this system */ 427 428 extern int stopint; /* !=0 to stop */ 429 430 extern int rip_sock; /* RIP socket */ 431 extern const struct interface *rip_sock_mcast; /* current multicast interface */ 432 extern int rt_sock; /* routing socket */ 433 extern int rt_sock_seqno; 434 extern int rdisc_sock; /* router-discovery raw socket */ 435 436 extern int supplier; /* process should supply updates */ 437 extern int supplier_set; /* -s or -q requested */ 438 extern int ridhosts; /* 1=reduce host routes */ 439 extern int mhome; /* 1=want multi-homed host route */ 440 extern int advertise_mhome; /* 1=must continue advertising it */ 441 extern int auth_ok; /* 1=ignore auth if we do not care */ 442 extern int insecure; /* Reply to special queries or not */ 443 444 extern struct timeval clk; /* system clock's idea of time */ 445 extern struct timeval epoch; /* system clock when started */ 446 extern struct timeval now; /* current idea of time */ 447 extern time_t now_stale; 448 extern time_t now_expire; 449 extern time_t now_garbage; 450 451 extern struct timeval age_timer; /* next check of old routes */ 452 extern struct timeval no_flash; /* inhibit flash update until then */ 453 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 454 extern int rdisc_ok; /* using solicited route */ 455 456 extern struct timeval ifinit_timer; /* time to check interfaces */ 457 458 extern naddr loopaddr; /* our address on loopback */ 459 extern int tot_interfaces; /* # of remote and local interfaces */ 460 extern int rip_interfaces; /* # of interfaces doing RIP */ 461 extern struct ifhead ifnet; /* all interfaces */ 462 extern struct ifhead remote_if; /* remote interfaces */ 463 extern int have_ripv1_out; /* have a RIPv1 interface */ 464 extern int need_flash; /* flash update needed */ 465 extern struct timeval need_kern; /* need to update kernel table */ 466 extern u_int update_seqno; /* a route has changed */ 467 468 extern int tracelevel, new_tracelevel; 469 #define MAX_TRACELEVEL 4 470 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 471 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 472 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 473 #define TRACEACTIONS (tracelevel != 0) 474 extern FILE *ftrace; /* output trace file */ 475 extern char inittracename[PATH_MAX]; 476 477 extern struct radix_node_head *rhead; 478 479 480 481 void fix_sock(int, const char *); 482 void fix_select(void); 483 void rip_off(void); 484 void rip_on(struct interface *); 485 486 void bufinit(void); 487 int output(enum output_type, struct sockaddr_in *, 488 struct interface *, struct rip *, int); 489 void clr_ws_buf(struct ws_buf *, struct auth *); 490 void rip_query(void); 491 void rip_bcast(int); 492 void supply(struct sockaddr_in *, struct interface *, 493 enum output_type, int, int, int); 494 495 void msglog(const char *, ...) PATTRIB(1,2); 496 struct msg_limit { 497 time_t reuse; 498 struct msg_sub { 499 naddr addr; 500 time_t until; 501 # define MSG_SUBJECT_N 8 502 } subs[MSG_SUBJECT_N]; 503 }; 504 void msglim(struct msg_limit *, naddr, 505 const char *, ...) PATTRIB(3,4); 506 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 507 void logbad(int, const char *, ...) PATTRIB(2,3); 508 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 509 #ifdef DEBUG 510 #define DBGERR(dump,msg) BADERR(dump,msg) 511 #else 512 #define DBGERR(dump,msg) LOGERR(msg) 513 #endif 514 char *naddr_ntoa(naddr); 515 const char *saddr_ntoa(struct sockaddr *); 516 517 void *rtmalloc(size_t, const char *); 518 void timevaladd(struct timeval *, struct timeval *); 519 void intvl_random(struct timeval *, u_long, u_long); 520 int getnet(char *, naddr *, naddr *); 521 int gethost(char *, naddr *); 522 void gwkludge(void); 523 const char *parse_parms(char *, int); 524 const char *check_parms(struct parm *); 525 void get_parms(struct interface *); 526 527 void lastlog(void); 528 void trace_close(int); 529 void set_tracefile(const char *, const char *, int); 530 void tracelevel_msg(const char *, int); 531 void trace_off(const char*, ...) PATTRIB(1,2); 532 void set_tracelevel(void); 533 void trace_flush(void); 534 void trace_misc(const char *, ...) PATTRIB(1,2); 535 void trace_act(const char *, ...) PATTRIB(1,2); 536 void trace_pkt(const char *, ...) PATTRIB(1,2); 537 void trace_add_del(const char *, struct rt_entry *); 538 void trace_change(struct rt_entry *, u_int, struct rt_spare *, 539 const char *); 540 void trace_if(const char *, struct interface *); 541 void trace_upslot(struct rt_entry *, struct rt_spare *, 542 struct rt_spare *); 543 void trace_rip(const char*, const char*, struct sockaddr_in *, 544 struct interface *, struct rip *, int); 545 char *addrname(naddr, naddr, int); 546 char *rtname(naddr, naddr, naddr); 547 548 void rdisc_age(naddr); 549 void set_rdisc_mg(struct interface *, int); 550 void set_supplier(void); 551 void if_bad_rdisc(struct interface *); 552 void if_ok_rdisc(struct interface *); 553 void read_rip(int, struct interface *); 554 void read_rt(void); 555 void read_d(void); 556 void rdisc_adv(void); 557 void rdisc_sol(void); 558 559 void sigtrace_on(int); 560 void sigtrace_off(int); 561 562 void flush_kern(void); 563 void age(naddr); 564 565 void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 566 void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 567 u_short, u_short, void (*)(struct ag_info *)); 568 void del_static(naddr, naddr, naddr, int); 569 void del_redirects(naddr, time_t); 570 struct rt_entry *rtget(naddr, naddr); 571 struct rt_entry *rtfind(naddr); 572 void rtinit(void); 573 void rtadd(naddr, naddr, u_int, struct rt_spare *); 574 void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 575 void rtdelete(struct rt_entry *); 576 void rts_delete(struct rt_entry *, struct rt_spare *); 577 void rtbad_sub(struct rt_entry *); 578 void rtswitch(struct rt_entry *, struct rt_spare *); 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_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 586 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 587 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 588 int); 589 590 naddr std_mask(naddr); 591 naddr ripv1_mask_net(naddr, struct interface *); 592 naddr ripv1_mask_host(naddr,struct interface *); 593 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 594 int check_dst(naddr); 595 struct interface *check_dup(naddr, naddr, naddr, int); 596 int check_remote(struct interface *); 597 void ifinit(void); 598 int walk_bad(struct radix_node *, struct walkarg *); 599 int if_ok(struct interface *, const char *); 600 void if_sick(struct interface *); 601 void if_link(struct interface *); 602 struct interface *ifwithaddr(naddr addr, int bcast, int remote); 603 struct interface *ifwithindex(u_short, int); 604 struct interface *iflookup(naddr); 605 606 struct auth *find_auth(struct interface *); 607 void end_md5_auth(struct ws_buf *, struct auth *); 608 609 #include <md5.h> 610