1: /*
2: * BIRD -- Management of Interfaces and Neighbor Cache
3: *
4: * (c) 1998--2000 Martin Mares <mj@ucw.cz>
5: *
6: * Can be freely distributed and used under the terms of the GNU GPL.
7: */
8:
9: /**
10: * DOC: Interfaces
11: *
12: * The interface module keeps track of all network interfaces in the
13: * system and their addresses.
14: *
15: * Each interface is represented by an &iface structure which carries
16: * interface capability flags (%IF_MULTIACCESS, %IF_BROADCAST etc.),
17: * MTU, interface name and index and finally a linked list of network
18: * prefixes assigned to the interface, each one represented by
19: * struct &ifa.
20: *
21: * The interface module keeps a `soft-up' state for each &iface which
22: * is a conjunction of link being up, the interface being of a `sane'
23: * type and at least one IP address assigned to it.
24: */
25:
26: #undef LOCAL_DEBUG
27:
28: #include "nest/bird.h"
29: #include "nest/iface.h"
30: #include "nest/protocol.h"
31: #include "nest/cli.h"
32: #include "lib/resource.h"
33: #include "lib/string.h"
34: #include "conf/conf.h"
35:
36: static pool *if_pool;
37:
38: list iface_list;
39:
40: /**
41: * ifa_dump - dump interface address
42: * @a: interface address descriptor
43: *
44: * This function dumps contents of an &ifa to the debug output.
45: */
46: void
47: ifa_dump(struct ifa *a)
48: {
49: debug("\t%I, net %I/%-2d bc %I -> %I%s%s%s\n", a->ip, a->prefix, a->pxlen, a->brd, a->opposite,
50: (a->flags & IF_UP) ? "" : " DOWN",
51: (a->flags & IA_PRIMARY) ? "" : " SEC",
52: (a->flags & IA_PEER) ? "PEER" : "");
53: }
54:
55: /**
56: * if_dump - dump interface
57: * @i: interface to dump
58: *
59: * This function dumps all information associated with a given
60: * network interface to the debug output.
61: */
62: void
63: if_dump(struct iface *i)
64: {
65: struct ifa *a;
66:
67: debug("IF%d: %s", i->index, i->name);
68: if (i->flags & IF_SHUTDOWN)
69: debug(" SHUTDOWN");
70: if (i->flags & IF_UP)
71: debug(" UP");
72: else
73: debug(" DOWN");
74: if (i->flags & IF_ADMIN_UP)
75: debug(" LINK-UP");
76: if (i->flags & IF_MULTIACCESS)
77: debug(" MA");
78: if (i->flags & IF_BROADCAST)
79: debug(" BC");
80: if (i->flags & IF_MULTICAST)
81: debug(" MC");
82: if (i->flags & IF_LOOPBACK)
83: debug(" LOOP");
84: if (i->flags & IF_IGNORE)
85: debug(" IGN");
86: if (i->flags & IF_TMP_DOWN)
87: debug(" TDOWN");
88: debug(" MTU=%d\n", i->mtu);
89: WALK_LIST(a, i->addrs)
90: {
91: ifa_dump(a);
92: ASSERT((a != i->addr) == !(a->flags & IA_PRIMARY));
93: }
94: }
95:
96: /**
97: * if_dump_all - dump all interfaces
98: *
99: * This function dumps information about all known network
100: * interfaces to the debug output.
101: */
102: void
103: if_dump_all(void)
104: {
105: struct iface *i;
106:
107: debug("Known network interfaces:\n");
108: WALK_LIST(i, iface_list)
109: if_dump(i);
110: debug("Router ID: %08x\n", config->router_id);
111: }
112:
113: static inline unsigned
114: if_what_changed(struct iface *i, struct iface *j)
115: {
116: unsigned c;
117:
118: if (((i->flags ^ j->flags) & ~(IF_UP | IF_SHUTDOWN | IF_UPDATED | IF_ADMIN_UP | IF_LINK_UP | IF_TMP_DOWN | IF_JUST_CREATED))
119: || (i->index != j->index) || (i->master != j->master))
120: return IF_CHANGE_TOO_MUCH;
121: c = 0;
122: if ((i->flags ^ j->flags) & IF_UP)
123: c |= (i->flags & IF_UP) ? IF_CHANGE_DOWN : IF_CHANGE_UP;
124: if ((i->flags ^ j->flags) & IF_LINK_UP)
125: c |= IF_CHANGE_LINK;
126: if (i->mtu != j->mtu)
127: c |= IF_CHANGE_MTU;
128: return c;
129: }
130:
131: static inline void
132: if_copy(struct iface *to, struct iface *from)
133: {
134: to->flags = from->flags | (to->flags & IF_TMP_DOWN);
135: to->mtu = from->mtu;
136: to->master_index = from->master_index;
137: to->master = from->master;
138: }
139:
140: static inline void
141: ifa_send_notify(struct proto *p, unsigned c, struct ifa *a)
142: {
143: if (p->ifa_notify && (!p->vrf_set || p->vrf == a->iface->master))
144: {
145: if (p->debug & D_IFACES)
146: log(L_TRACE "%s <%s address %I/%d on interface %s %s",
147: p->name, (a->flags & IA_PRIMARY) ? " primary" : "",
148: a->prefix, a->pxlen, a->iface->name,
149: (c & IF_CHANGE_UP) ? "added" : "removed");
150: p->ifa_notify(p, c, a);
151: }
152: }
153:
154: static void
155: ifa_notify_change_(unsigned c, struct ifa *a)
156: {
157: struct proto *p;
158:
159: DBG("IFA change notification (%x) for %s:%I\n", c, a->iface->name, a->ip);
160:
161: WALK_LIST(p, active_proto_list)
162: ifa_send_notify(p, c, a);
163: }
164:
165: static inline void
166: ifa_notify_change(unsigned c, struct ifa *a)
167: {
168: if (c & IF_CHANGE_DOWN)
169: neigh_ifa_update(a);
170:
171: ifa_notify_change_(c, a);
172:
173: if (c & IF_CHANGE_UP)
174: neigh_ifa_update(a);
175: }
176:
177: static inline void
178: if_send_notify(struct proto *p, unsigned c, struct iface *i)
179: {
180: if (p->if_notify && (!p->vrf_set || p->vrf == i->master))
181: {
182: if (p->debug & D_IFACES)
183: log(L_TRACE "%s < interface %s %s", p->name, i->name,
184: (c & IF_CHANGE_UP) ? "goes up" :
185: (c & IF_CHANGE_DOWN) ? "goes down" :
186: (c & IF_CHANGE_MTU) ? "changes MTU" :
187: (c & IF_CHANGE_LINK) ? "changes link" :
188: (c & IF_CHANGE_CREATE) ? "created" :
189: "sends unknown event");
190: p->if_notify(p, c, i);
191: }
192: }
193:
194: static void
195: if_notify_change(unsigned c, struct iface *i)
196: {
197: struct proto *p;
198: struct ifa *a;
199:
200: if (i->flags & IF_JUST_CREATED)
201: {
202: i->flags &= ~IF_JUST_CREATED;
203: c |= IF_CHANGE_CREATE | IF_CHANGE_MTU;
204: }
205:
206: DBG("Interface change notification (%x) for %s\n", c, i->name);
207: #ifdef LOCAL_DEBUG
208: if_dump(i);
209: #endif
210:
211: if (c & IF_CHANGE_DOWN)
212: neigh_if_down(i);
213:
214: if (c & IF_CHANGE_DOWN)
215: WALK_LIST(a, i->addrs)
216: {
217: a->flags = (i->flags & ~IA_FLAGS) | (a->flags & IA_FLAGS);
218: ifa_notify_change_(IF_CHANGE_DOWN, a);
219: }
220:
221: WALK_LIST(p, active_proto_list)
222: if_send_notify(p, c, i);
223:
224: if (c & IF_CHANGE_UP)
225: WALK_LIST(a, i->addrs)
226: {
227: a->flags = (i->flags & ~IA_FLAGS) | (a->flags & IA_FLAGS);
228: ifa_notify_change_(IF_CHANGE_UP, a);
229: }
230:
231: if (c & IF_CHANGE_UP)
232: neigh_if_up(i);
233:
234: if ((c & (IF_CHANGE_UP | IF_CHANGE_DOWN | IF_CHANGE_LINK)) == IF_CHANGE_LINK)
235: neigh_if_link(i);
236: }
237:
238: static unsigned
239: if_recalc_flags(struct iface *i, unsigned flags)
240: {
241: if ((flags & (IF_SHUTDOWN | IF_TMP_DOWN)) ||
242: !(flags & IF_ADMIN_UP) ||
243: !i->addr ||
244: (i->master_index && !i->master))
245: flags &= ~IF_UP;
246: else
247: flags |= IF_UP;
248: return flags;
249: }
250:
251: static void
252: if_change_flags(struct iface *i, unsigned flags)
253: {
254: unsigned of = i->flags;
255:
256: i->flags = if_recalc_flags(i, flags);
257: if ((i->flags ^ of) & IF_UP)
258: if_notify_change((i->flags & IF_UP) ? IF_CHANGE_UP : IF_CHANGE_DOWN, i);
259: }
260:
261: /**
262: * if_delete - remove interface
263: * @old: interface
264: *
265: * This function is called by the low-level platform dependent code
266: * whenever it notices an interface disappears. It is just a shorthand
267: * for if_update().
268: */
269:
270: void
271: if_delete(struct iface *old)
272: {
273: struct iface f = {};
274: strncpy(f.name, old->name, sizeof(f.name)-1);
275: f.flags = IF_SHUTDOWN;
276: if_update(&f);
277: }
278:
279: /**
280: * if_update - update interface status
281: * @new: new interface status
282: *
283: * if_update() is called by the low-level platform dependent code
284: * whenever it notices an interface change.
285: *
286: * There exist two types of interface updates -- synchronous and asynchronous
287: * ones. In the synchronous case, the low-level code calls if_start_update(),
288: * scans all interfaces reported by the OS, uses if_update() and ifa_update()
289: * to pass them to the core and then it finishes the update sequence by
290: * calling if_end_update(). When working asynchronously, the sysdep code
291: * calls if_update() and ifa_update() whenever it notices a change.
292: *
293: * if_update() will automatically notify all other modules about the change.
294: */
295: struct iface *
296: if_update(struct iface *new)
297: {
298: struct iface *i;
299: unsigned c;
300:
301: WALK_LIST(i, iface_list)
302: if (!strcmp(new->name, i->name))
303: {
304: new->addr = i->addr;
305: new->flags = if_recalc_flags(new, new->flags);
306: c = if_what_changed(i, new);
307: if (c & IF_CHANGE_TOO_MUCH) /* Changed a lot, convert it to down/up */
308: {
309: DBG("Interface %s changed too much -- forcing down/up transition\n", i->name);
310: if_change_flags(i, i->flags | IF_TMP_DOWN);
311: rem_node(&i->n);
312: new->addr = i->addr;
313: memcpy(&new->addrs, &i->addrs, sizeof(i->addrs));
314: memcpy(i, new, sizeof(*i));
315: i->flags &= ~IF_UP; /* IF_TMP_DOWN will be added later */
316: goto newif;
317: }
318:
319: if_copy(i, new);
320: if (c)
321: if_notify_change(c, i);
322:
323: i->flags |= IF_UPDATED;
324: return i;
325: }
326: i = mb_alloc(if_pool, sizeof(struct iface));
327: memcpy(i, new, sizeof(*i));
328: init_list(&i->addrs);
329: newif:
330: init_list(&i->neighbors);
331: i->flags |= IF_UPDATED | IF_TMP_DOWN; /* Tmp down as we don't have addresses yet */
332: add_tail(&iface_list, &i->n);
333: return i;
334: }
335:
336: void
337: if_start_update(void)
338: {
339: struct iface *i;
340: struct ifa *a;
341:
342: WALK_LIST(i, iface_list)
343: {
344: i->flags &= ~IF_UPDATED;
345: WALK_LIST(a, i->addrs)
346: a->flags &= ~IF_UPDATED;
347: }
348: }
349:
350: void
351: if_end_partial_update(struct iface *i)
352: {
353: if (i->flags & IF_TMP_DOWN)
354: if_change_flags(i, i->flags & ~IF_TMP_DOWN);
355: }
356:
357: void
358: if_end_update(void)
359: {
360: struct iface *i;
361: struct ifa *a, *b;
362:
363: WALK_LIST(i, iface_list)
364: {
365: if (!(i->flags & IF_UPDATED))
366: if_change_flags(i, (i->flags & ~IF_ADMIN_UP) | IF_SHUTDOWN);
367: else
368: {
369: WALK_LIST_DELSAFE(a, b, i->addrs)
370: if (!(a->flags & IF_UPDATED))
371: ifa_delete(a);
372: if_end_partial_update(i);
373: }
374: }
375: }
376:
377: void
378: if_flush_ifaces(struct proto *p)
379: {
380: if (p->debug & D_EVENTS)
381: log(L_TRACE "%s: Flushing interfaces", p->name);
382: if_start_update();
383: if_end_update();
384: }
385:
386: /**
387: * if_feed_baby - advertise interfaces to a new protocol
388: * @p: protocol to feed
389: *
390: * When a new protocol starts, this function sends it a series
391: * of notifications about all existing interfaces.
392: */
393: void
394: if_feed_baby(struct proto *p)
395: {
396: struct iface *i;
397: struct ifa *a;
398:
399: if (!p->if_notify && !p->ifa_notify) /* shortcut */
400: return;
401: DBG("Announcing interfaces to new protocol %s\n", p->name);
402: WALK_LIST(i, iface_list)
403: {
404: if_send_notify(p, IF_CHANGE_CREATE | ((i->flags & IF_UP) ? IF_CHANGE_UP : 0), i);
405: if (i->flags & IF_UP)
406: WALK_LIST(a, i->addrs)
407: ifa_send_notify(p, IF_CHANGE_CREATE | IF_CHANGE_UP, a);
408: }
409: }
410:
411: /**
412: * if_find_by_index - find interface by ifindex
413: * @idx: ifindex
414: *
415: * This function finds an &iface structure corresponding to an interface
416: * of the given index @idx. Returns a pointer to the structure or %NULL
417: * if no such structure exists.
418: */
419: struct iface *
420: if_find_by_index(unsigned idx)
421: {
422: struct iface *i;
423:
424: WALK_LIST(i, iface_list)
425: if (i->index == idx && !(i->flags & IF_SHUTDOWN))
426: return i;
427: return NULL;
428: }
429:
430: /**
431: * if_find_by_name - find interface by name
432: * @name: interface name
433: *
434: * This function finds an &iface structure corresponding to an interface
435: * of the given name @name. Returns a pointer to the structure or %NULL
436: * if no such structure exists.
437: */
438: struct iface *
439: if_find_by_name(char *name)
440: {
441: struct iface *i;
442:
443: WALK_LIST(i, iface_list)
444: if (!strcmp(i->name, name) && !(i->flags & IF_SHUTDOWN))
445: return i;
446: return NULL;
447: }
448:
449: struct iface *
450: if_get_by_name(char *name)
451: {
452: struct iface *i;
453:
454: WALK_LIST(i, iface_list)
455: if (!strcmp(i->name, name))
456: return i;
457:
458: /* No active iface, create a dummy */
459: i = mb_allocz(if_pool, sizeof(struct iface));
460: strncpy(i->name, name, sizeof(i->name)-1);
461: i->flags = IF_SHUTDOWN;
462: init_list(&i->addrs);
463: init_list(&i->neighbors);
464: add_tail(&iface_list, &i->n);
465: return i;
466: }
467:
468: struct ifa *kif_choose_primary(struct iface *i);
469:
470: static int
471: ifa_recalc_primary(struct iface *i)
472: {
473: struct ifa *a;
474: int c = 0;
475:
476: #ifdef IPV6
477: struct ifa *ll = NULL;
478:
479: WALK_LIST(a, i->addrs)
480: if (ipa_is_link_local(a->ip) && (!ll || (a == i->llv6)))
481: ll = a;
482:
483: c = (ll != i->llv6);
484: i->llv6 = ll;
485: #endif
486:
487: a = kif_choose_primary(i);
488:
489: if (a == i->addr)
490: return c;
491:
492: if (i->addr)
493: i->addr->flags &= ~IA_PRIMARY;
494:
495: if (a)
496: {
497: a->flags |= IA_PRIMARY;
498: rem_node(&a->n);
499: add_head(&i->addrs, &a->n);
500: }
501:
502: i->addr = a;
503: return 1;
504: }
505:
506: void
507: ifa_recalc_all_primary_addresses(void)
508: {
509: struct iface *i;
510:
511: WALK_LIST(i, iface_list)
512: {
513: if (ifa_recalc_primary(i))
514: if_change_flags(i, i->flags | IF_TMP_DOWN);
515: }
516: }
517:
518: static inline int
519: ifa_same(struct ifa *a, struct ifa *b)
520: {
521: return ipa_equal(a->ip, b->ip) && ipa_equal(a->prefix, b->prefix) &&
522: a->pxlen == b->pxlen;
523: }
524:
525:
526: /**
527: * ifa_update - update interface address
528: * @a: new interface address
529: *
530: * This function adds address information to a network
531: * interface. It's called by the platform dependent code during
532: * the interface update process described under if_update().
533: */
534: struct ifa *
535: ifa_update(struct ifa *a)
536: {
537: struct iface *i = a->iface;
538: struct ifa *b;
539:
540: WALK_LIST(b, i->addrs)
541: if (ifa_same(b, a))
542: {
543: if (ipa_equal(b->brd, a->brd) &&
544: ipa_equal(b->opposite, a->opposite) &&
545: b->scope == a->scope &&
546: !((b->flags ^ a->flags) & IA_PEER))
547: {
548: b->flags |= IF_UPDATED;
549: return b;
550: }
551: ifa_delete(b);
552: break;
553: }
554:
555: #ifndef IPV6
556: if ((i->flags & IF_BROADCAST) && !ipa_nonzero(a->brd))
557: log(L_ERR "Missing broadcast address for interface %s", i->name);
558: #endif
559:
560: b = mb_alloc(if_pool, sizeof(struct ifa));
561: memcpy(b, a, sizeof(struct ifa));
562: add_tail(&i->addrs, &b->n);
563: b->flags = (i->flags & ~IA_FLAGS) | (a->flags & IA_FLAGS);
564: if (ifa_recalc_primary(i))
565: if_change_flags(i, i->flags | IF_TMP_DOWN);
566: if (b->flags & IF_UP)
567: ifa_notify_change(IF_CHANGE_CREATE | IF_CHANGE_UP, b);
568: return b;
569: }
570:
571: /**
572: * ifa_delete - remove interface address
573: * @a: interface address
574: *
575: * This function removes address information from a network
576: * interface. It's called by the platform dependent code during
577: * the interface update process described under if_update().
578: */
579: void
580: ifa_delete(struct ifa *a)
581: {
582: struct iface *i = a->iface;
583: struct ifa *b;
584:
585: WALK_LIST(b, i->addrs)
586: if (ifa_same(b, a))
587: {
588: rem_node(&b->n);
589: if (b->flags & IF_UP)
590: {
591: b->flags &= ~IF_UP;
592: ifa_notify_change(IF_CHANGE_DOWN, b);
593: }
594: if ((b->flags & IA_PRIMARY) || (b == ifa_llv6(i)))
595: {
596: if_change_flags(i, i->flags | IF_TMP_DOWN);
597: ifa_recalc_primary(i);
598: }
599: mb_free(b);
600: return;
601: }
602: }
603:
604: u32
605: if_choose_router_id(struct iface_patt *mask UNUSED6, u32 old_id UNUSED6)
606: {
607: #ifndef IPV6
608: struct iface *i;
609: struct ifa *a, *b;
610:
611: b = NULL;
612: WALK_LIST(i, iface_list)
613: {
614: if (!(i->flags & IF_ADMIN_UP) ||
615: (i->flags & IF_SHUTDOWN))
616: continue;
617:
618: WALK_LIST(a, i->addrs)
619: {
620: if (a->flags & IA_SECONDARY)
621: continue;
622:
623: if (a->scope <= SCOPE_LINK)
624: continue;
625:
626: /* Check pattern if specified */
627: if (mask && !iface_patt_match(mask, i, a))
628: continue;
629:
630: /* No pattern or pattern matched */
631: if (!b || ipa_to_u32(a->ip) < ipa_to_u32(b->ip))
632: b = a;
633: }
634: }
635:
636: if (!b)
637: return 0;
638:
639: u32 id = ipa_to_u32(b->ip);
640: if (id != old_id)
641: log(L_INFO "Chosen router ID %R according to interface %s", id, b->iface->name);
642:
643: return id;
644:
645: #else
646: return 0;
647: #endif
648: }
649:
650: /**
651: * if_init - initialize interface module
652: *
653: * This function is called during BIRD startup to initialize
654: * all data structures of the interface module.
655: */
656: void
657: if_init(void)
658: {
659: if_pool = rp_new(&root_pool, "Interfaces");
660: init_list(&iface_list);
661: neigh_init(if_pool);
662: }
663:
664: /*
665: * Interface Pattern Lists
666: */
667:
668: int
669: iface_patt_match(struct iface_patt *ifp, struct iface *i, struct ifa *a)
670: {
671: struct iface_patt_node *p;
672:
673: WALK_LIST(p, ifp->ipn_list)
674: {
675: char *t = p->pattern;
676: int pos = p->positive;
677:
678: if (t)
679: {
680: if (*t == '-')
681: {
682: t++;
683: pos = !pos;
684: }
685:
686: if (!patmatch(t, i->name))
687: continue;
688: }
689:
690: if (p->pxlen == 0)
691: return pos;
692:
693: if (!a)
694: continue;
695:
696: if (ipa_in_net(a->ip, p->prefix, p->pxlen))
697: return pos;
698:
699: if ((a->flags & IA_PEER) &&
700: ipa_in_net(a->opposite, p->prefix, p->pxlen))
701: return pos;
702:
703: continue;
704: }
705:
706: return 0;
707: }
708:
709: struct iface_patt *
710: iface_patt_find(list *l, struct iface *i, struct ifa *a)
711: {
712: struct iface_patt *p;
713:
714: WALK_LIST(p, *l)
715: if (iface_patt_match(p, i, a))
716: return p;
717:
718: return NULL;
719: }
720:
721: static int
722: iface_plists_equal(struct iface_patt *pa, struct iface_patt *pb)
723: {
724: struct iface_patt_node *x, *y;
725:
726: x = HEAD(pa->ipn_list);
727: y = HEAD(pb->ipn_list);
728: while (x->n.next && y->n.next)
729: {
730: if ((x->positive != y->positive) ||
731: (!x->pattern && y->pattern) || /* This nasty lines where written by me... :-( Feela */
732: (!y->pattern && x->pattern) ||
733: ((x->pattern != y->pattern) && strcmp(x->pattern, y->pattern)) ||
734: !ipa_equal(x->prefix, y->prefix) ||
735: (x->pxlen != y->pxlen))
736: return 0;
737: x = (void *) x->n.next;
738: y = (void *) y->n.next;
739: }
740: return (!x->n.next && !y->n.next);
741: }
742:
743: int
744: iface_patts_equal(list *a, list *b, int (*comp)(struct iface_patt *, struct iface_patt *))
745: {
746: struct iface_patt *x, *y;
747:
748: x = HEAD(*a);
749: y = HEAD(*b);
750: while (x->n.next && y->n.next)
751: {
752: if (!iface_plists_equal(x, y) ||
753: (comp && !comp(x, y)))
754: return 0;
755: x = (void *) x->n.next;
756: y = (void *) y->n.next;
757: }
758: return (!x->n.next && !y->n.next);
759: }
760:
761: /*
762: * CLI commands.
763: */
764:
765: static void
766: if_show_addr(struct ifa *a)
767: {
768: byte opp[STD_ADDRESS_P_LENGTH + 16];
769:
770: if (ipa_nonzero(a->opposite))
771: bsprintf(opp, ", opposite %I", a->opposite);
772: else
773: opp[0] = 0;
774: cli_msg(-1003, "\t%I/%d (%s%s, scope %s)",
775: a->ip, a->pxlen,
776: (a->flags & IA_PRIMARY) ? "Primary" : (a->flags & IA_SECONDARY) ? "Secondary" : "Unselected",
777: opp, ip_scope_text(a->scope));
778: }
779:
780: void
781: if_show(void)
782: {
783: struct iface *i;
784: struct ifa *a;
785: char *type;
786:
787: WALK_LIST(i, iface_list)
788: {
789: if (i->flags & IF_SHUTDOWN)
790: continue;
791:
792: char mbuf[16 + sizeof(i->name)] = {};
793: if (i->master)
794: bsprintf(mbuf, " master=%s", i->master->name);
795: else if (i->master_index)
796: bsprintf(mbuf, " master=#%u", i->master_index);
797:
798: cli_msg(-1001, "%s %s (index=%d%s)", i->name, (i->flags & IF_UP) ? "up" : "DOWN", i->index, mbuf);
799: if (!(i->flags & IF_MULTIACCESS))
800: type = "PtP";
801: else
802: type = "MultiAccess";
803: cli_msg(-1004, "\t%s%s%s Admin%s Link%s%s%s MTU=%d",
804: type,
805: (i->flags & IF_BROADCAST) ? " Broadcast" : "",
806: (i->flags & IF_MULTICAST) ? " Multicast" : "",
807: (i->flags & IF_ADMIN_UP) ? "Up" : "Down",
808: (i->flags & IF_LINK_UP) ? "Up" : "Down",
809: (i->flags & IF_LOOPBACK) ? " Loopback" : "",
810: (i->flags & IF_IGNORE) ? " Ignored" : "",
811: i->mtu);
812: if (i->addr)
813: if_show_addr(i->addr);
814: WALK_LIST(a, i->addrs)
815: if (a != i->addr)
816: if_show_addr(a);
817: }
818: cli_msg(0, "");
819: }
820:
821: void
822: if_show_summary(void)
823: {
824: struct iface *i;
825: byte addr[STD_ADDRESS_P_LENGTH + 16];
826:
827: cli_msg(-2005, "interface state address");
828: WALK_LIST(i, iface_list)
829: {
830: if (i->flags & IF_SHUTDOWN)
831: continue;
832:
833: if (i->addr)
834: bsprintf(addr, "%I/%d", i->addr->ip, i->addr->pxlen);
835: else
836: addr[0] = 0;
837: cli_msg(-1005, "%-9s %-5s %s", i->name, (i->flags & IF_UP) ? "up" : "DOWN", addr);
838: }
839: cli_msg(0, "");
840: }
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