defs.h revision 1.12
1 /* $NetBSD: defs.h,v 1.12 1996/08/10 01:29:09 thorpej Exp $ */ 2 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)defs.h 8.1 (Berkeley) 6/5/93 36 */ 37 38 /* Definitions for RIPv2 routing process. 39 * 40 * This code is based on the 4.4BSD `routed` daemon, with extensions to 41 * support: 42 * RIPv2, including variable length subnet masks. 43 * Router Discovery 44 * aggregate routes in the kernel tables. 45 * aggregate advertised routes. 46 * maintain spare routes for faster selection of another gateway 47 * when the current gateway dies. 48 * timers on routes with second granularity so that selection 49 * of a new route does not wait 30-60 seconds. 50 * tolerance of static routes. 51 * tell the kernel hop counts 52 * do not advertise if ipforwarding=0 53 * 54 * The vestigual support for other protocols has been removed. There 55 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 56 * other protocols. The result is far smaller, faster, cleaner, and 57 * perhaps understandable. 58 * 59 * The accumulation of special flags and kludges added over the many 60 * years have been simplified and integrated. 61 */ 62 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 #ifdef sgi 70 #include <strings.h> 71 #include <bstring.h> 72 #endif 73 #include <stdarg.h> 74 #include <syslog.h> 75 #include <time.h> 76 #include <sys/types.h> 77 #include <sys/param.h> 78 #include <sys/ioctl.h> 79 #include <sys/sysctl.h> 80 #include <sys/socket.h> 81 #include <net/if.h> 82 #include <net/route.h> 83 #include <net/radix.h> 84 #ifndef sgi 85 struct walkarg; 86 #endif 87 #include <net/if_dl.h> 88 #include <netinet/in.h> 89 #include <arpa/inet.h> 90 #define RIPVERSION RIPv2 91 #include <protocols/routed.h> 92 93 #if defined(__NetBSD__) 94 /* 95 * Prototypes for the radix functions. 96 */ 97 void rn_init __P((void)); 98 int rn_inithead __P((void **, int)); 99 int rn_refines __P((void *, void *)); 100 int rn_walktree __P((struct radix_node_head *, 101 int (*)(struct radix_node *, void *), void *)); 102 103 struct radix_node 104 *rn_addmask __P((void *, int, int)), 105 *rn_addroute __P((void *, void *, struct radix_node_head *, 106 struct radix_node [2])), 107 *rn_delete __P((void *, void *, struct radix_node_head *)), 108 *rn_insert __P((void *, struct radix_node_head *, int *, 109 struct radix_node [2])), 110 *rn_lookup __P((void *, void *, struct radix_node_head *)), 111 *rn_match __P((void *, struct radix_node_head *)), 112 *rn_newpair __P((void *, int, struct radix_node[2])), 113 *rn_search __P((void *, struct radix_node *)), 114 *rn_search_m __P((void *, struct radix_node *, void *)); 115 #endif /* __NetBSD__ */ 116 117 /* Type of an IP address. 118 * Some systems do not like to pass structures, so do not use in_addr. 119 * Some systems think a long has 64 bits, which would be a gross waste. 120 * So define it here so it can be changed for the target system. 121 * It should be defined somewhere netinet/in.h, but it is not. 122 */ 123 #ifdef sgi 124 #define naddr __uint32_t 125 #elif defined (__NetBSD__) 126 #define naddr u_int32_t 127 #define _HAVE_SA_LEN 128 #define _HAVE_SIN_LEN 129 #else 130 #define naddr u_long 131 #define _HAVE_SA_LEN 132 #define _HAVE_SIN_LEN 133 #endif 134 135 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 136 * the dstaddr of point-to-point interfaces. 137 */ 138 /* #define MCAST_PPP_BUG */ 139 140 #define NEVER (24*60*60) /* a long time */ 141 #define EPOCH NEVER /* bias time by this to avoid <0 */ 142 143 /* Scan the kernel regularly to see if any interfaces have appeared or been 144 * turned off. These must be less than STALE_TIME. 145 */ 146 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 147 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 148 #define CHECK_QUIET_INTERVAL 300 /* when not */ 149 150 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 151 152 153 /* Router Discovery parameters */ 154 #ifndef sgi 155 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 156 #endif 157 #define MaxMaxAdvertiseInterval 1800 158 #define MinMaxAdvertiseInterval 4 159 #define DefMaxAdvertiseInterval 600 160 #define DEF_PreferenceLevel 0 161 #define MIN_PreferenceLevel 0x80000000 162 163 #define MAX_INITIAL_ADVERT_INTERVAL 16 164 #define MAX_INITIAL_ADVERTS 3 165 #define MAX_RESPONSE_DELAY 2 166 167 #define MAX_SOLICITATION_DELAY 1 168 #define SOLICITATION_INTERVAL 3 169 #define MAX_SOLICITATIONS 3 170 171 172 /* typical packet buffers */ 173 union pkt_buf { 174 char packet[MAXPACKETSIZE+1]; 175 struct rip rip; 176 }; 177 178 179 /* Main, daemon routing table structure 180 */ 181 struct rt_entry { 182 struct radix_node rt_nodes[2]; /* radix tree glue */ 183 u_int rt_state; 184 # define RS_IF 0x001 /* for network interface */ 185 # define RS_NET_INT 0x002 /* authority route */ 186 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 187 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 188 # define RS_SUBNET 0x008 /* subnet route from any source */ 189 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 190 # define RS_MHOME 0x020 /* from -m */ 191 # define RS_STATIC 0x040 /* from the kernel */ 192 # define RS_RDISC 0x080 /* from router discovery */ 193 # define RS_PERMANENT (RS_MHOME | RS_STATIC | RS_NET_SYN | RS_RDISC) 194 struct sockaddr_in rt_dst_sock; 195 naddr rt_mask; 196 struct rt_spare { 197 struct interface *rts_ifp; 198 naddr rts_gate; /* forward packets here */ 199 naddr rts_router; /* on the authority of this router */ 200 char rts_metric; 201 u_short rts_tag; 202 time_t rts_time; /* timer to junk stale routes */ 203 #define NUM_SPARES 4 204 } rt_spares[NUM_SPARES]; 205 u_int rt_seqno; /* when last changed */ 206 char rt_poison_metric; /* to notice maximum recently */ 207 time_t rt_poison_time; /* advertised metric */ 208 }; 209 #define rt_dst rt_dst_sock.sin_addr.s_addr 210 #define rt_ifp rt_spares[0].rts_ifp 211 #define rt_gate rt_spares[0].rts_gate 212 #define rt_router rt_spares[0].rts_router 213 #define rt_metric rt_spares[0].rts_metric 214 #define rt_tag rt_spares[0].rts_tag 215 #define rt_time rt_spares[0].rts_time 216 217 #define HOST_MASK 0xffffffff 218 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 219 220 /* age all routes that 221 * are not from -g, -m, or static routes from the kernel 222 * not unbroken interface routes 223 * but not broken interfaces 224 * nor non-passive, remote interfaces that are not aliases 225 * (i.e. remote & metric=0) 226 */ 227 #define AGE_RT(rt,ifp) (0 == ((rt)->rt_state & RS_PERMANENT) \ 228 && (!((rt)->rt_state & RS_IF) \ 229 || (ifp) == 0 \ 230 || (((ifp)->int_state & IS_REMOTE) \ 231 && !((ifp)->int_state & IS_PASSIVE)))) 232 233 /* true if A is better than B 234 * Better if 235 * - A is not a poisoned route 236 * - and A is not stale 237 * - and A has a shorter path 238 * - or is the router speaking for itself 239 * - or the current route is equal but stale 240 * - or it is a host route advertised by a system for itself 241 */ 242 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 243 && now_stale <= (A)->rts_time \ 244 && ((A)->rts_metric < (B)->rts_metric \ 245 || ((A)->rts_gate == (A)->rts_router \ 246 && (B)->rts_gate != (B)->rts_router) \ 247 || ((A)->rts_metric == (B)->rts_metric \ 248 && now_stale > (B)->rts_time) \ 249 || (RT_ISHOST(rt) \ 250 && (rt)->rt_dst == (A)->rts_router \ 251 && (A)->rts_metric == (B)->rts_metric))) 252 253 254 /* An "interface" is similar to a kernel ifnet structure, except it also 255 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 256 */ 257 struct interface { 258 struct interface *int_next, *int_prev; 259 char int_name[IFNAMSIZ+15+1]; /* big enough for IS_REMOTE */ 260 u_short int_index; 261 naddr int_addr; /* address on this host (net order) */ 262 naddr int_brdaddr; /* broadcast address (n) */ 263 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 264 naddr int_net; /* working network # (host order)*/ 265 naddr int_mask; /* working net mask (host order) */ 266 naddr int_ripv1_mask; /* for inferring a mask (n) */ 267 naddr int_std_addr; /* class A/B/C address (n) */ 268 naddr int_std_net; /* class A/B/C network (h) */ 269 naddr int_std_mask; /* class A/B/C netmask (h) */ 270 int int_rip_sock; /* for queries */ 271 int int_if_flags; /* copied from kernel */ 272 u_int int_state; 273 time_t int_act_time; /* last thought healthy */ 274 u_short int_transitions; /* times gone up-down */ 275 char int_metric; 276 char int_d_metric; /* for faked default route */ 277 struct int_data { 278 u_int ipackets; /* previous network stats */ 279 u_int ierrors; 280 u_int opackets; 281 u_int oerrors; 282 #ifdef sgi 283 u_int odrops; 284 #endif 285 time_t ts; /* timestamp on network stats */ 286 } int_data; 287 char int_passwd[RIP_AUTH_PW_LEN]; /* RIPv2 password */ 288 int int_rdisc_pref; /* advertised rdisc preference */ 289 int int_rdisc_int; /* MaxAdvertiseInterval */ 290 int int_rdisc_cnt; 291 struct timeval int_rdisc_timer; 292 }; 293 294 #define IS_ALIAS 0x0000001 /* interface alias */ 295 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 296 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 297 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 298 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 299 #define IS_CHECKED 0x0000020 /* still exists */ 300 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 301 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 302 #define IS_RIP_QUERIED 0x0000100 /* query broadcast */ 303 #define IS_BROKE 0x0000200 /* seems to be broken */ 304 #define IS_SICK 0x0000400 /* seems to be broken */ 305 #define IS_DUP 0x0000800 /* has a duplicate address */ 306 #define IS_ACTIVE 0x0001000 /* heard from it at least once */ 307 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 308 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 309 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 310 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 311 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 312 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 313 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 314 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 315 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 316 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 317 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 318 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 319 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 320 #define IS_NO_ADV_IN 0x0100000 321 #define IS_NO_SOL_OUT 0x0200000 /* no solicitations */ 322 #define IS_SOL_OUT 0x0400000 /* send solicitations */ 323 #define GROUP_IS_SOL (IS_NO_ADV_IN|IS_NO_SOL_OUT) 324 #define IS_NO_ADV_OUT 0x0800000 /* do not advertise rdisc */ 325 #define IS_ADV_OUT 0x1000000 /* advertise rdisc */ 326 #define GROUP_IS_ADV (IS_NO_ADV_OUT|IS_ADV_OUT) 327 #define IS_BCAST_RDISC 0x2000000 /* 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 0x4000000 /* poor-man's router discovery */ 330 331 #ifdef sgi 332 #define IFF_UP_RUNNING (IFF_RUNNING|IFF_UP) 333 #else 334 #define IFF_UP_RUNNING IFF_UP 335 #endif 336 #define iff_alive(f) (((f) & IFF_UP_RUNNING) == IFF_UP_RUNNING) 337 338 339 /* Information for aggregating routes */ 340 #define NUM_AG_SLOTS 32 341 struct ag_info { 342 struct ag_info *ag_fine; /* slot with finer netmask */ 343 struct ag_info *ag_cors; /* more coarse netmask */ 344 naddr ag_dst_h; /* destination in host byte order */ 345 naddr ag_mask; 346 naddr ag_gate; 347 naddr ag_nhop; 348 char ag_metric; /* metric to be advertised */ 349 char ag_pref; /* aggregate based on this */ 350 u_int ag_seqno; 351 u_short ag_tag; 352 u_short ag_state; 353 #define AGS_SUPPRESS 0x001 /* combine with coaser mask */ 354 #define AGS_PROMOTE 0x002 /* synthesize combined routes */ 355 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 356 #define AGS_REDUN1 0x008 357 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 358 == (AGS_REDUN0 | AGS_REDUN1)) 359 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 360 #define AGS_IF 0x020 /* for an interface */ 361 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 362 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 363 * has the finer netmask */ 364 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 365 * has the coarser netmaks */ 366 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 367 368 /* some bits are set if they are set on either route */ 369 #define AGS_PROMOTE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 370 AGS_SUPPRESS | AGS_CORS_GATE) 371 }; 372 373 374 /* parameters for interfaces */ 375 extern struct parm { 376 struct parm *parm_next; 377 char parm_name[IFNAMSIZ+1]; 378 naddr parm_addr_h; 379 naddr parm_mask; 380 381 char parm_d_metric; 382 u_int parm_int_state; 383 int parm_rdisc_pref; 384 int parm_rdisc_int; 385 char parm_passwd[RIP_AUTH_PW_LEN+1]; 386 } *parms; 387 388 /* authority for internal networks */ 389 extern struct intnet { 390 struct intnet *intnet_next; 391 naddr intnet_addr; 392 naddr intnet_mask; 393 char intnet_metric; 394 } *intnets; 395 396 397 398 extern pid_t mypid; 399 extern naddr myaddr; /* main address of this system */ 400 401 extern int stopint; /* !=0 to stop */ 402 403 extern int sock_max; 404 extern int rip_sock; /* RIP socket */ 405 extern struct interface *rip_sock_mcast; /* current multicast interface */ 406 extern int rt_sock; /* routing socket */ 407 extern int rt_sock_seqno; 408 extern int rdisc_sock; /* router-discovery raw socket */ 409 410 extern int seqno; /* sequence number for messages */ 411 extern int supplier; /* process should supply updates */ 412 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 413 extern int supplier_set; /* -s or -q requested */ 414 extern int ridhosts; /* 1=reduce host routes */ 415 extern int mhome; /* 1=want multi-homed host route */ 416 extern int advertise_mhome; /* 1=must continue adverising it */ 417 extern int auth_ok; /* 1=ignore auth if we do not care */ 418 419 extern struct timeval epoch; /* when started */ 420 extern struct timeval now; /* current idea of time */ 421 extern time_t now_stale; 422 extern time_t now_garbage; 423 424 extern struct timeval next_bcast; /* next general broadcast */ 425 extern struct timeval age_timer; /* next check of old routes */ 426 extern struct timeval no_flash; /* inhibit flash update until then */ 427 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 428 extern int rdisc_ok; /* using solicited route */ 429 430 extern struct timeval ifinit_timer; /* time to check interfaces */ 431 432 extern naddr loopaddr; /* our address on loopback */ 433 extern int tot_interfaces; /* # of remote and local interfaces */ 434 extern int rip_interfaces; /* # of interfaces doing RIP */ 435 extern struct interface *ifnet; /* all interfaces */ 436 extern int have_ripv1_out; /* have a RIPv1 interface */ 437 extern int have_ripv1_in; 438 extern int need_flash; /* flash update needed */ 439 extern struct timeval need_kern; /* need to update kernel table */ 440 extern int update_seqno; /* a route has changed */ 441 442 extern u_int tracelevel, new_tracelevel; 443 #define MAX_TRACELEVEL 3 444 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 445 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 446 #define TRACEACTIONS (tracelevel != 0) 447 extern FILE *ftrace; /* output trace file */ 448 449 extern struct radix_node_head *rhead; 450 451 452 #ifdef sgi 453 /* Fix conflicts */ 454 #define dup2(x,y) BSDdup2(x,y) 455 #endif /* sgi */ 456 457 extern void fix_sock(int, char *); 458 extern void fix_select(void); 459 extern void rip_off(void); 460 extern void rip_on(struct interface *); 461 462 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 463 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 464 extern int output(enum output_type, struct sockaddr_in *, 465 struct interface *, struct rip *, int); 466 extern void rip_query(void); 467 extern void rip_bcast(int); 468 extern void supply(struct sockaddr_in *, struct interface *, 469 enum output_type, int, int); 470 471 extern void msglog(char *, ...); 472 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 473 extern void logbad(int, char *, ...); 474 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 475 #ifdef DEBUG 476 #define DBGERR(dump,msg) BADERR(dump,msg) 477 #else 478 #define DBGERR(dump,msg) LOGERR(msg) 479 #endif 480 #ifdef MCAST_PPP_BUG 481 extern void mcasterr(struct interface *, int, char *); 482 #define MCASTERR(ifp,dump,msg) mcasterr(ifp, dump, "setsockopt(IP_"msg")") 483 #else 484 #define MCASTERR(ifp, dump,msg) DBGERR(dump,"setsockopt(IP_" msg ")") 485 #endif 486 extern char *naddr_ntoa(naddr); 487 extern char *saddr_ntoa(struct sockaddr *); 488 489 extern void timevaladd(struct timeval *, struct timeval *); 490 extern void intvl_random(struct timeval *, u_long, u_long); 491 extern int getnet(char *, naddr *, naddr *); 492 extern int gethost(char *, naddr *); 493 extern void gwkludge(void); 494 extern char *parse_parms(char *); 495 extern char *check_parms(struct parm *); 496 extern void get_parms(struct interface *); 497 498 extern void lastlog(void); 499 extern void trace_on(char *, int); 500 extern void trace_off(char*, ...); 501 extern void trace_flush(void); 502 extern void set_tracelevel(void); 503 extern void trace_act(char *, ...); 504 extern void trace_pkt(char *, ...); 505 extern void trace_add_del(char *, struct rt_entry *); 506 extern void trace_change(struct rt_entry *, u_int, naddr, naddr, int, 507 u_short, struct interface *, time_t, char *); 508 extern void trace_if(char *, struct interface *); 509 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 510 naddr, naddr, 511 struct interface *, int, u_short, time_t); 512 extern void trace_rip(char*, char*, struct sockaddr_in *, 513 struct interface *, struct rip *, int); 514 extern char *addrname(naddr, naddr, int); 515 516 extern void rdisc_age(naddr); 517 extern void set_rdisc_mg(struct interface *, int); 518 extern void set_supplier(void); 519 extern void if_bad_rdisc(struct interface *); 520 extern void if_ok_rdisc(struct interface *); 521 extern void read_rip(int, struct interface *); 522 extern void read_rt(void); 523 extern void read_d(void); 524 extern void rdisc_adv(void); 525 extern void rdisc_sol(void); 526 527 extern void sigalrm(int); 528 extern void sigterm(int); 529 530 extern void sigtrace_on(int); 531 extern void sigtrace_off(int); 532 533 extern void flush_kern(void); 534 extern void age(naddr); 535 536 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 537 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 538 u_short, u_short, void (*)(struct ag_info *)); 539 extern void del_static(naddr, naddr, int); 540 extern void del_redirects(naddr, time_t); 541 extern struct rt_entry *rtget(naddr, naddr); 542 extern struct rt_entry *rtfind(naddr); 543 extern void rtinit(void); 544 extern void rtadd(naddr, naddr, naddr, naddr, 545 int, u_short, u_int, struct interface *); 546 extern void rtchange(struct rt_entry *, u_int, naddr,naddr, int, u_short, 547 struct interface *ifp, time_t, char *); 548 extern void rtdelete(struct rt_entry *); 549 extern void rtbad_sub(struct rt_entry *); 550 extern void rtswitch(struct rt_entry *, struct rt_spare *); 551 extern void rtbad(struct rt_entry *); 552 553 554 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 555 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 556 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 557 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 558 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 559 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 560 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 561 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 562 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 563 int); 564 565 extern naddr std_mask(naddr); 566 extern naddr ripv1_mask_net(naddr, struct interface *); 567 extern naddr ripv1_mask_host(naddr,struct interface *); 568 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 569 extern int check_dst(naddr); 570 #ifdef sgi 571 extern int sysctl(int *, u_int, void *, size_t *, void *, size_t); 572 #endif 573 extern void addrouteforif(register struct interface *); 574 extern void ifinit(void); 575 extern int walk_bad(struct radix_node *, void *); 576 extern int if_ok(struct interface *, char *); 577 extern void if_sick(struct interface *); 578 extern void if_bad(struct interface *); 579 extern struct interface *ifwithaddr(naddr, int, int); 580 extern struct interface *ifwithname(char *, naddr); 581 extern struct interface *ifwithindex(u_short); 582 extern struct interface *iflookup(naddr); 583
Indexes created Sat Sep 27 22:09:54 GMT 2025