defs.h revision 1.13
1 /* $NetBSD: defs.h,v 1.13 1996/09/24 16:24:12 christos 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 #ifdef sgi 82 #include <net/radix.h> 83 #else 84 #include "radix.h" 85 #endif 86 #include <net/if.h> 87 #include <net/route.h> 88 #include <net/if_dl.h> 89 #include <netinet/in.h> 90 #include <arpa/inet.h> 91 #define RIPVERSION RIPv2 92 #include <protocols/routed.h> 93 94 /* Type of an IP address. 95 * Some systems do not like to pass structures, so do not use in_addr. 96 * Some systems think a long has 64 bits, which would be a gross waste. 97 * So define it here so it can be changed for the target system. 98 * It should be defined somewhere netinet/in.h, but it is not. 99 */ 100 #ifdef sgi 101 #define naddr __uint32_t 102 #elif defined (__NetBSD__) 103 #define naddr u_int32_t 104 #define _HAVE_SA_LEN 105 #define _HAVE_SIN_LEN 106 #else 107 #define naddr u_long 108 #define _HAVE_SA_LEN 109 #define _HAVE_SIN_LEN 110 #endif 111 112 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 113 * the dstaddr of point-to-point interfaces. 114 */ 115 /* #define MCAST_PPP_BUG */ 116 117 #define NEVER (24*60*60) /* a long time */ 118 #define EPOCH NEVER /* bias time by this to avoid <0 */ 119 120 /* Scan the kernel regularly to see if any interfaces have appeared or been 121 * turned off. These must be less than STALE_TIME. 122 */ 123 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 124 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 125 #define CHECK_QUIET_INTERVAL 300 /* when not */ 126 127 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 128 129 130 /* Router Discovery parameters */ 131 #ifndef sgi 132 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 133 #endif 134 #define MaxMaxAdvertiseInterval 1800 135 #define MinMaxAdvertiseInterval 4 136 #define DefMaxAdvertiseInterval 600 137 #define DEF_PreferenceLevel 0 138 #define MIN_PreferenceLevel 0x80000000 139 140 #define MAX_INITIAL_ADVERT_INTERVAL 16 141 #define MAX_INITIAL_ADVERTS 3 142 #define MAX_RESPONSE_DELAY 2 143 144 #define MAX_SOLICITATION_DELAY 1 145 #define SOLICITATION_INTERVAL 3 146 #define MAX_SOLICITATIONS 3 147 148 149 /* typical packet buffers */ 150 union pkt_buf { 151 char packet[MAXPACKETSIZE+1]; 152 struct rip rip; 153 }; 154 155 156 /* no more routes than this, to protect ourself in case something goes 157 * whacko and starts broadcast 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 #define NUM_SPARES 4 186 } rt_spares[NUM_SPARES]; 187 u_int rt_seqno; /* when last changed */ 188 char rt_poison_metric; /* to notice maximum recently */ 189 time_t rt_poison_time; /* advertised metric */ 190 }; 191 #define rt_dst rt_dst_sock.sin_addr.s_addr 192 #define rt_ifp rt_spares[0].rts_ifp 193 #define rt_gate rt_spares[0].rts_gate 194 #define rt_router rt_spares[0].rts_router 195 #define rt_metric rt_spares[0].rts_metric 196 #define rt_tag rt_spares[0].rts_tag 197 #define rt_time rt_spares[0].rts_time 198 199 #define HOST_MASK 0xffffffff 200 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 201 202 /* age all routes that 203 * are not from -g, -m, or static routes from the kernel 204 * not unbroken interface routes 205 * but not broken interfaces 206 * nor non-passive, remote interfaces that are not aliases 207 * (i.e. remote & metric=0) 208 */ 209 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 210 | RS_NET_SYN | RS_RDISC)) \ 211 && (!((rt_state) & RS_IF) \ 212 || (ifp) == 0 \ 213 || (((ifp)->int_state & IS_REMOTE) \ 214 && !((ifp)->int_state & IS_PASSIVE)))) 215 216 /* true if A is better than B 217 * Better if 218 * - A is not a poisoned route 219 * - and A is not stale 220 * - and A has a shorter path 221 * - or is the router speaking for itself 222 * - or the current route is equal but stale 223 * - or it is a host route advertised by a system for itself 224 */ 225 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 226 && now_stale <= (A)->rts_time \ 227 && ((A)->rts_metric < (B)->rts_metric \ 228 || ((A)->rts_gate == (A)->rts_router \ 229 && (B)->rts_gate != (B)->rts_router) \ 230 || ((A)->rts_metric == (B)->rts_metric \ 231 && now_stale > (B)->rts_time) \ 232 || (RT_ISHOST(rt) \ 233 && (rt)->rt_dst == (A)->rts_router \ 234 && (A)->rts_metric == (B)->rts_metric))) 235 236 237 /* An "interface" is similar to a kernel ifnet structure, except it also 238 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 239 */ 240 struct interface { 241 struct interface *int_next, *int_prev; 242 char int_name[IFNAMSIZ+15+1]; /* big enough for IS_REMOTE */ 243 u_short int_index; 244 naddr int_addr; /* address on this host (net order) */ 245 naddr int_brdaddr; /* broadcast address (n) */ 246 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 247 naddr int_net; /* working network # (host order)*/ 248 naddr int_mask; /* working net mask (host order) */ 249 naddr int_ripv1_mask; /* for inferring a mask (n) */ 250 naddr int_std_addr; /* class A/B/C address (n) */ 251 naddr int_std_net; /* class A/B/C network (h) */ 252 naddr int_std_mask; /* class A/B/C netmask (h) */ 253 int int_rip_sock; /* for queries */ 254 int int_if_flags; /* some bits copied from kernel */ 255 u_int int_state; 256 time_t int_act_time; /* last thought healthy */ 257 u_short int_transitions; /* times gone up-down */ 258 char int_metric; 259 char int_d_metric; /* for faked default route */ 260 struct int_data { 261 u_int ipackets; /* previous network stats */ 262 u_int ierrors; 263 u_int opackets; 264 u_int oerrors; 265 #ifdef sgi 266 u_int odrops; 267 #endif 268 time_t ts; /* timestamp on network stats */ 269 } int_data; 270 char int_passwd[RIP_AUTH_PW_LEN]; /* RIPv2 password */ 271 int int_rdisc_pref; /* advertised rdisc preference */ 272 int int_rdisc_int; /* MaxAdvertiseInterval */ 273 int int_rdisc_cnt; 274 struct timeval int_rdisc_timer; 275 }; 276 277 /* bits in int_state */ 278 #define IS_ALIAS 0x0000001 /* interface alias */ 279 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 280 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 281 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 282 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 283 #define IS_CHECKED 0x0000020 /* still exists */ 284 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 285 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 286 #define IS_RIP_QUERIED 0x0000100 /* query broadcast */ 287 #define IS_BROKE 0x0000200 /* seems to be broken */ 288 #define IS_SICK 0x0000400 /* seems to be broken */ 289 #define IS_DUP 0x0000800 /* has a duplicate address */ 290 #define IS_ACTIVE 0x0001000 /* heard from it at least once */ 291 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 292 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 293 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 294 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 295 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 296 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 297 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 298 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 299 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 300 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 301 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 302 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 303 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 304 #define IS_NO_ADV_IN 0x0100000 305 #define IS_NO_SOL_OUT 0x0200000 /* no solicitations */ 306 #define IS_SOL_OUT 0x0400000 /* send solicitations */ 307 #define GROUP_IS_SOL (IS_NO_ADV_IN|IS_NO_SOL_OUT) 308 #define IS_NO_ADV_OUT 0x0800000 /* do not advertise rdisc */ 309 #define IS_ADV_OUT 0x1000000 /* advertise rdisc */ 310 #define GROUP_IS_ADV (IS_NO_ADV_OUT|IS_ADV_OUT) 311 #define IS_BCAST_RDISC 0x2000000 /* broadcast instead of multicast */ 312 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 313 #define IS_PM_RDISC 0x4000000 /* poor-man's router discovery */ 314 315 #ifdef sgi 316 #define IFF_UP_RUNNING (IFF_RUNNING|IFF_UP) 317 #else 318 #define IFF_UP_RUNNING IFF_UP 319 #endif 320 #define iff_alive(f) (((f) & IFF_UP_RUNNING) == IFF_UP_RUNNING) 321 322 323 /* Information for aggregating routes */ 324 #define NUM_AG_SLOTS 32 325 struct ag_info { 326 struct ag_info *ag_fine; /* slot with finer netmask */ 327 struct ag_info *ag_cors; /* more coarse netmask */ 328 naddr ag_dst_h; /* destination in host byte order */ 329 naddr ag_mask; 330 naddr ag_gate; 331 naddr ag_nhop; 332 char ag_metric; /* metric to be advertised */ 333 char ag_pref; /* aggregate based on this */ 334 u_int ag_seqno; 335 u_short ag_tag; 336 u_short ag_state; 337 #define AGS_SUPPRESS 0x001 /* combine with coaser mask */ 338 #define AGS_PROMOTE 0x002 /* synthesize combined routes */ 339 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 340 #define AGS_REDUN1 0x008 341 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 342 == (AGS_REDUN0 | AGS_REDUN1)) 343 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 344 #define AGS_IF 0x020 /* for an interface */ 345 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 346 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 347 * has the finer netmask */ 348 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 349 * has the coarser netmaks */ 350 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 351 352 /* some bits are set if they are set on either route */ 353 #define AGS_PROMOTE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 354 AGS_SUPPRESS | AGS_CORS_GATE) 355 }; 356 357 358 /* parameters for interfaces */ 359 extern struct parm { 360 struct parm *parm_next; 361 char parm_name[IFNAMSIZ+1]; 362 naddr parm_addr_h; 363 naddr parm_mask; 364 365 char parm_d_metric; 366 u_int parm_int_state; 367 int parm_rdisc_pref; 368 int parm_rdisc_int; 369 char parm_passwd[RIP_AUTH_PW_LEN+1]; 370 } *parms; 371 372 /* authority for internal networks */ 373 extern struct intnet { 374 struct intnet *intnet_next; 375 naddr intnet_addr; 376 naddr intnet_mask; 377 char intnet_metric; 378 } *intnets; 379 380 381 382 extern pid_t mypid; 383 extern naddr myaddr; /* main address of this system */ 384 385 extern int stopint; /* !=0 to stop */ 386 387 extern int sock_max; 388 extern int rip_sock; /* RIP socket */ 389 extern struct interface *rip_sock_mcast; /* current multicast interface */ 390 extern int rt_sock; /* routing socket */ 391 extern int rt_sock_seqno; 392 extern int rdisc_sock; /* router-discovery raw socket */ 393 394 extern int seqno; /* sequence number for messages */ 395 extern int supplier; /* process should supply updates */ 396 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 397 extern int supplier_set; /* -s or -q requested */ 398 extern int ridhosts; /* 1=reduce host routes */ 399 extern int mhome; /* 1=want multi-homed host route */ 400 extern int advertise_mhome; /* 1=must continue adverising it */ 401 extern int auth_ok; /* 1=ignore auth if we do not care */ 402 403 extern struct timeval epoch; /* when started */ 404 extern struct timeval now; /* current idea of time */ 405 extern time_t now_stale; 406 extern time_t now_expire; 407 extern time_t now_garbage; 408 409 extern struct timeval next_bcast; /* next general broadcast */ 410 extern struct timeval age_timer; /* next check of old routes */ 411 extern struct timeval no_flash; /* inhibit flash update until then */ 412 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 413 extern int rdisc_ok; /* using solicited route */ 414 415 extern struct timeval ifinit_timer; /* time to check interfaces */ 416 417 extern naddr loopaddr; /* our address on loopback */ 418 extern int tot_interfaces; /* # of remote and local interfaces */ 419 extern int rip_interfaces; /* # of interfaces doing RIP */ 420 extern struct interface *ifnet; /* all interfaces */ 421 extern int have_ripv1_out; /* have a RIPv1 interface */ 422 extern int have_ripv1_in; 423 extern int need_flash; /* flash update needed */ 424 extern struct timeval need_kern; /* need to update kernel table */ 425 extern int update_seqno; /* a route has changed */ 426 427 extern u_int tracelevel, new_tracelevel; 428 #define MAX_TRACELEVEL 4 429 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 430 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 431 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 432 #define TRACEACTIONS (tracelevel != 0) 433 extern FILE *ftrace; /* output trace file */ 434 435 extern struct radix_node_head *rhead; 436 437 438 #ifdef sgi 439 /* Fix conflicts */ 440 #define dup2(x,y) BSDdup2(x,y) 441 #endif /* sgi */ 442 443 extern void fix_sock(int, char *); 444 extern void fix_select(void); 445 extern void rip_off(void); 446 extern void rip_on(struct interface *); 447 448 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 449 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 450 extern int output(enum output_type, struct sockaddr_in *, 451 struct interface *, struct rip *, int); 452 extern void rip_query(void); 453 extern void rip_bcast(int); 454 extern void supply(struct sockaddr_in *, struct interface *, 455 enum output_type, int, int); 456 457 extern void msglog(char *, ...); 458 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 459 extern void logbad(int, char *, ...); 460 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 461 #ifdef DEBUG 462 #define DBGERR(dump,msg) BADERR(dump,msg) 463 #else 464 #define DBGERR(dump,msg) LOGERR(msg) 465 #endif 466 extern char *naddr_ntoa(naddr); 467 extern char *saddr_ntoa(struct sockaddr *); 468 469 extern void *rtmalloc(size_t, char *); 470 extern void timevaladd(struct timeval *, struct timeval *); 471 extern void intvl_random(struct timeval *, u_long, u_long); 472 extern int getnet(char *, naddr *, naddr *); 473 extern int gethost(char *, naddr *); 474 extern void gwkludge(void); 475 extern char *parse_parms(char *); 476 extern char *check_parms(struct parm *); 477 extern void get_parms(struct interface *); 478 479 extern void lastlog(void); 480 extern void trace_on(char *, int); 481 extern void trace_off(char*, ...); 482 extern void trace_flush(void); 483 extern void set_tracelevel(void); 484 extern void trace_kernel(char *, ...); 485 extern void trace_act(char *, ...); 486 extern void trace_pkt(char *, ...); 487 extern void trace_add_del(char *, struct rt_entry *); 488 extern void trace_change(struct rt_entry *, u_int, naddr, naddr, int, 489 u_short, struct interface *, time_t, char *); 490 extern void trace_if(char *, struct interface *); 491 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 492 naddr, naddr, 493 struct interface *, int, u_short, time_t); 494 extern void trace_rip(char*, char*, struct sockaddr_in *, 495 struct interface *, struct rip *, int); 496 extern char *addrname(naddr, naddr, int); 497 498 extern void rdisc_age(naddr); 499 extern void set_rdisc_mg(struct interface *, int); 500 extern void set_supplier(void); 501 extern void if_bad_rdisc(struct interface *); 502 extern void if_ok_rdisc(struct interface *); 503 extern void read_rip(int, struct interface *); 504 extern void read_rt(void); 505 extern void read_d(void); 506 extern void rdisc_adv(void); 507 extern void rdisc_sol(void); 508 509 extern void sigalrm(int); 510 extern void sigterm(int); 511 512 extern void sigtrace_on(int); 513 extern void sigtrace_off(int); 514 515 extern void flush_kern(void); 516 extern void age(naddr); 517 518 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 519 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 520 u_short, u_short, void (*)(struct ag_info *)); 521 extern void del_static(naddr, naddr, int); 522 extern void del_redirects(naddr, time_t); 523 extern struct rt_entry *rtget(naddr, naddr); 524 extern struct rt_entry *rtfind(naddr); 525 extern void rtinit(void); 526 extern void rtadd(naddr, naddr, naddr, naddr, 527 int, u_short, u_int, struct interface *); 528 extern void rtchange(struct rt_entry *, u_int, naddr,naddr, int, u_short, 529 struct interface *ifp, time_t, char *); 530 extern void rtdelete(struct rt_entry *); 531 extern void rtbad_sub(struct rt_entry *); 532 extern void rtswitch(struct rt_entry *, struct rt_spare *); 533 extern void rtbad(struct rt_entry *); 534 535 536 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 537 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 538 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 539 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 540 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 541 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 542 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 543 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 544 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 545 int); 546 547 extern naddr std_mask(naddr); 548 extern naddr ripv1_mask_net(naddr, struct interface *); 549 extern naddr ripv1_mask_host(naddr,struct interface *); 550 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 551 extern int check_dst(naddr); 552 extern void addrouteforif(register struct interface *); 553 extern void ifinit(void); 554 extern int walk_bad(struct radix_node *, struct walkarg *); 555 extern int if_ok(struct interface *, char *); 556 extern void if_sick(struct interface *); 557 extern void if_bad(struct interface *); 558 extern struct interface *ifwithaddr(naddr, int, int); 559 extern struct interface *ifwithname(char *, naddr); 560 extern struct interface *ifwithindex(u_short); 561 extern struct interface *iflookup(naddr); 562
Indexes created Fri Sep 26 20:09:58 GMT 2025