1 /*
2 * DECnet An implementation of the DECnet protocol suite for the LINUX
3 * operating system. DECnet is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * DECnet Routing Forwarding Information Base (Glue/Info List)
7 *
8 * Author: Steve Whitehouse <SteveW@ACM.org>
9 *
10 *
11 * Changes:
12 * Alexey Kuznetsov : SMP locking changes
13 * Steve Whitehouse : Rewrote it... Well to be more correct, I
14 * copied most of it from the ipv4 fib code.
15 *
16 */
17 #include <linux/config.h>
18 #include <linux/string.h>
19 #include <linux/net.h>
20 #include <linux/socket.h>
21 #include <linux/sockios.h>
22 #include <linux/init.h>
23 #include <linux/skbuff.h>
24 #include <linux/netlink.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/proc_fs.h>
27 #include <linux/netdevice.h>
28 #include <linux/timer.h>
29 #include <linux/spinlock.h>
30 #include <asm/atomic.h>
31 #include <asm/uaccess.h>
32 #include <net/neighbour.h>
33 #include <net/dst.h>
34 #include <net/dn.h>
35 #include <net/dn_route.h>
36 #include <net/dn_fib.h>
37 #include <net/dn_neigh.h>
38 #include <net/dn_dev.h>
39
40
41 #define for_fib_info() { struct dn_fib_info *fi;\
42 for(fi = dn_fib_info_list; fi; fi = fi->fib_next)
43 #define endfor_fib_info() }
44
45 #define for_nexthops(fi) { int nhsel; const struct dn_fib_nh *nh;\
46 for(nhsel = 0, nh = (fi)->fib_nh; nhsel < (fi)->fib_nhs; nh++, nhsel++)
47
48 #define change_nexthops(fi) { int nhsel; struct dn_fib_nh *nh;\
49 for(nhsel = 0, nh = (struct dn_fib_nh *)((fi)->fib_nh); nhsel < (fi)->fib_nhs; nh++, nhsel++)
50
51 #define endfor_nexthops(fi) }
52
53 extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);
54
55
56 static struct dn_fib_info *dn_fib_info_list;
57 static rwlock_t dn_fib_info_lock = RW_LOCK_UNLOCKED;
58 int dn_fib_info_cnt;
59
60 static struct
61 {
62 int error;
63 u8 scope;
64 } dn_fib_props[RTN_MAX+1] = {
65 { 0, RT_SCOPE_NOWHERE }, /* RTN_UNSPEC */
66 { 0, RT_SCOPE_UNIVERSE }, /* RTN_UNICAST */
67 { 0, RT_SCOPE_HOST }, /* RTN_LOCAL */
68 { -EINVAL, RT_SCOPE_NOWHERE }, /* RTN_BROADCAST */
69 { -EINVAL, RT_SCOPE_NOWHERE }, /* RTN_ANYCAST */
70 { -EINVAL, RT_SCOPE_NOWHERE }, /* RTN_MULTICAST */
71 { -EINVAL, RT_SCOPE_UNIVERSE }, /* RTN_BLACKHOLE */
72 { -EHOSTUNREACH, RT_SCOPE_UNIVERSE }, /* RTN_UNREACHABLE */
73 { -EACCES, RT_SCOPE_UNIVERSE }, /* RTN_PROHIBIT */
74 { -EAGAIN, RT_SCOPE_UNIVERSE }, /* RTN_THROW */
75 { -EINVAL, RT_SCOPE_NOWHERE }, /* RTN_NAT */
76 { -EINVAL, RT_SCOPE_NOWHERE } /* RTN_XRESOLVE */
77 };
78
dn_fib_free_info(struct dn_fib_info * fi)79 void dn_fib_free_info(struct dn_fib_info *fi)
80 {
81 if (fi->fib_dead == 0) {
82 printk(KERN_DEBUG "DECnet: BUG! Attempt to free alive dn_fib_info\n");
83 return;
84 }
85
86 change_nexthops(fi) {
87 if (nh->nh_dev)
88 dev_put(nh->nh_dev);
89 nh->nh_dev = NULL;
90 } endfor_nexthops(fi);
91 dn_fib_info_cnt--;
92 kfree(fi);
93 }
94
dn_fib_release_info(struct dn_fib_info * fi)95 void dn_fib_release_info(struct dn_fib_info *fi)
96 {
97 write_lock(&dn_fib_info_lock);
98 if (fi && --fi->fib_treeref == 0) {
99 if (fi->fib_next)
100 fi->fib_next->fib_prev = fi->fib_prev;
101 if (fi->fib_prev)
102 fi->fib_prev->fib_next = fi->fib_next;
103 if (fi == dn_fib_info_list)
104 dn_fib_info_list = fi->fib_next;
105 fi->fib_dead = 1;
106 dn_fib_info_put(fi);
107 }
108 write_unlock(&dn_fib_info_lock);
109 }
110
dn_fib_nh_comp(const struct dn_fib_info * fi,const struct dn_fib_info * ofi)111 static __inline__ int dn_fib_nh_comp(const struct dn_fib_info *fi, const struct dn_fib_info *ofi)
112 {
113 const struct dn_fib_nh *onh = ofi->fib_nh;
114
115 for_nexthops(fi) {
116 if (nh->nh_oif != onh->nh_oif ||
117 nh->nh_gw != onh->nh_gw ||
118 nh->nh_scope != onh->nh_scope ||
119 nh->nh_weight != onh->nh_weight ||
120 ((nh->nh_flags^onh->nh_flags)&~RTNH_F_DEAD))
121 return -1;
122 onh++;
123 } endfor_nexthops(fi);
124 return 0;
125 }
126
dn_fib_find_info(const struct dn_fib_info * nfi)127 static __inline__ struct dn_fib_info *dn_fib_find_info(const struct dn_fib_info *nfi)
128 {
129 for_fib_info() {
130 if (fi->fib_nhs != nfi->fib_nhs)
131 continue;
132 if (nfi->fib_protocol == fi->fib_protocol &&
133 nfi->fib_prefsrc == fi->fib_prefsrc &&
134 nfi->fib_priority == fi->fib_priority &&
135 ((nfi->fib_flags^fi->fib_flags)&~RTNH_F_DEAD) == 0 &&
136 (nfi->fib_nhs == 0 || dn_fib_nh_comp(fi, nfi) == 0))
137 return fi;
138 } endfor_fib_info();
139 return NULL;
140 }
141
dn_fib_get_attr16(struct rtattr * attr,int attrlen,int type)142 u16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type)
143 {
144 while(RTA_OK(attr,attrlen)) {
145 if (attr->rta_type == type)
146 return *(u16*)RTA_DATA(attr);
147 attr = RTA_NEXT(attr, attrlen);
148 }
149
150 return 0;
151 }
152
dn_fib_count_nhs(struct rtattr * rta)153 static int dn_fib_count_nhs(struct rtattr *rta)
154 {
155 int nhs = 0;
156 struct rtnexthop *nhp = RTA_DATA(rta);
157 int nhlen = RTA_PAYLOAD(rta);
158
159 while(nhlen >= (int)sizeof(struct rtnexthop)) {
160 if ((nhlen -= nhp->rtnh_len) < 0)
161 return 0;
162 nhs++;
163 nhp = RTNH_NEXT(nhp);
164 }
165
166 return nhs;
167 }
168
dn_fib_get_nhs(struct dn_fib_info * fi,const struct rtattr * rta,const struct rtmsg * r)169 static int dn_fib_get_nhs(struct dn_fib_info *fi, const struct rtattr *rta, const struct rtmsg *r)
170 {
171 struct rtnexthop *nhp = RTA_DATA(rta);
172 int nhlen = RTA_PAYLOAD(rta);
173
174 change_nexthops(fi) {
175 int attrlen = nhlen - sizeof(struct rtnexthop);
176 if (attrlen < 0 || (nhlen -= nhp->rtnh_len) < 0)
177 return -EINVAL;
178
179 nh->nh_flags = (r->rtm_flags&~0xFF) | nhp->rtnh_flags;
180 nh->nh_oif = nhp->rtnh_ifindex;
181 nh->nh_weight = nhp->rtnh_hops + 1;
182
183 if (attrlen) {
184 nh->nh_gw = dn_fib_get_attr16(RTNH_DATA(nhp), attrlen, RTA_GATEWAY);
185 }
186 nhp = RTNH_NEXT(nhp);
187 } endfor_nexthops(fi);
188
189 return 0;
190 }
191
192
dn_fib_check_nh(const struct rtmsg * r,struct dn_fib_info * fi,struct dn_fib_nh * nh)193 static int dn_fib_check_nh(const struct rtmsg *r, struct dn_fib_info *fi, struct dn_fib_nh *nh)
194 {
195 int err;
196
197 if (nh->nh_gw) {
198 struct dn_fib_key key;
199 struct dn_fib_res res;
200
201 if (nh->nh_flags&RTNH_F_ONLINK) {
202 struct net_device *dev;
203
204 if (r->rtm_scope >= RT_SCOPE_LINK)
205 return -EINVAL;
206 if ((dev = __dev_get_by_index(nh->nh_oif)) == NULL)
207 return -ENODEV;
208 if (!(dev->flags&IFF_UP))
209 return -ENETDOWN;
210 nh->nh_dev = dev;
211 atomic_inc(&dev->refcnt);
212 nh->nh_scope = RT_SCOPE_LINK;
213 return 0;
214 }
215
216 memset(&key, 0, sizeof(key));
217 key.dst = nh->nh_gw;
218 key.oif = nh->nh_oif;
219 key.scope = r->rtm_scope + 1;
220
221 if (key.scope < RT_SCOPE_LINK)
222 key.scope = RT_SCOPE_LINK;
223
224 if ((err = dn_fib_lookup(&key, &res)) != 0)
225 return err;
226
227 nh->nh_scope = res.scope;
228 nh->nh_oif = DN_FIB_RES_OIF(res);
229 nh->nh_dev = DN_FIB_RES_DEV(res);
230 if (nh->nh_dev)
231 atomic_inc(&nh->nh_dev->refcnt);
232 dn_fib_res_put(&res);
233 } else {
234 struct net_device *dev;
235
236 if (nh->nh_flags&(RTNH_F_PERVASIVE|RTNH_F_ONLINK))
237 return -EINVAL;
238
239 dev = __dev_get_by_index(nh->nh_oif);
240 if (dev == NULL || dev->dn_ptr == NULL)
241 return -ENODEV;
242 if (!(dev->flags&IFF_UP))
243 return -ENETDOWN;
244 nh->nh_dev = dev;
245 atomic_inc(&nh->nh_dev->refcnt);
246 nh->nh_scope = RT_SCOPE_HOST;
247 }
248
249 return 0;
250 }
251
252
dn_fib_create_info(const struct rtmsg * r,struct dn_kern_rta * rta,const struct nlmsghdr * nlh,int * errp)253 struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, struct dn_kern_rta *rta, const struct nlmsghdr *nlh, int *errp)
254 {
255 int err;
256 struct dn_fib_info *fi = NULL;
257 struct dn_fib_info *ofi;
258 int nhs = 1;
259
260 if (r->rtm_type > RTN_MAX)
261 goto err_inval;
262
263 if (dn_fib_props[r->rtm_type].scope > r->rtm_scope)
264 goto err_inval;
265
266 if (rta->rta_mp) {
267 nhs = dn_fib_count_nhs(rta->rta_mp);
268 if (nhs == 0)
269 goto err_inval;
270 }
271
272 fi = kmalloc(sizeof(*fi)+nhs*sizeof(struct dn_fib_nh), GFP_KERNEL);
273 err = -ENOBUFS;
274 if (fi == NULL)
275 goto failure;
276 memset(fi, 0, sizeof(*fi)+nhs*sizeof(struct dn_fib_nh));
277
278 fi->fib_protocol = r->rtm_protocol;
279 fi->fib_nhs = nhs;
280 fi->fib_flags = r->rtm_flags;
281 if (rta->rta_priority)
282 fi->fib_priority = *rta->rta_priority;
283 if (rta->rta_prefsrc)
284 memcpy(&fi->fib_prefsrc, rta->rta_prefsrc, 2);
285
286 if (rta->rta_mp) {
287 if ((err = dn_fib_get_nhs(fi, rta->rta_mp, r)) != 0)
288 goto failure;
289 if (rta->rta_oif && fi->fib_nh->nh_oif != *rta->rta_oif)
290 goto err_inval;
291 if (rta->rta_gw && memcmp(&fi->fib_nh->nh_gw, rta->rta_gw, 2))
292 goto err_inval;
293 } else {
294 struct dn_fib_nh *nh = fi->fib_nh;
295 if (rta->rta_oif)
296 nh->nh_oif = *rta->rta_oif;
297 if (rta->rta_gw)
298 memcpy(&nh->nh_gw, rta->rta_gw, 2);
299 nh->nh_flags = r->rtm_flags;
300 nh->nh_weight = 1;
301 }
302
303 if (dn_fib_props[r->rtm_type].error) {
304 if (rta->rta_gw || rta->rta_oif || rta->rta_mp)
305 goto err_inval;
306 goto link_it;
307 }
308
309 if (r->rtm_scope > RT_SCOPE_HOST)
310 goto err_inval;
311
312 if (r->rtm_scope == RT_SCOPE_HOST) {
313 struct dn_fib_nh *nh = fi->fib_nh;
314
315 /* Local address is added */
316 if (nhs != 1 || nh->nh_gw)
317 goto err_inval;
318 nh->nh_scope = RT_SCOPE_NOWHERE;
319 nh->nh_dev = dev_get_by_index(fi->fib_nh->nh_oif);
320 err = -ENODEV;
321 if (nh->nh_dev == NULL)
322 goto failure;
323 } else {
324 change_nexthops(fi) {
325 if ((err = dn_fib_check_nh(r, fi, nh)) != 0)
326 goto failure;
327 } endfor_nexthops(fi)
328 }
329
330 #if I_GET_AROUND_TO_FIXING_PREFSRC
331 if (fi->fib_prefsrc) {
332 if (r->rtm_type != RTN_LOCAL || rta->rta_dst == NULL ||
333 memcmp(&fi->fib_prefsrc, rta->rta_dst, 2))
334 if (dn_addr_type(fi->fib_prefsrc) != RTN_LOCAL)
335 goto err_inval;
336 }
337 #endif
338
339 link_it:
340 if ((ofi = dn_fib_find_info(fi)) != NULL) {
341 fi->fib_dead = 1;
342 dn_fib_free_info(fi);
343 ofi->fib_treeref++;
344 return ofi;
345 }
346
347 fi->fib_treeref++;
348 atomic_inc(&fi->fib_clntref);
349 write_lock(&dn_fib_info_lock);
350 fi->fib_next = dn_fib_info_list;
351 fi->fib_prev = NULL;
352 if (dn_fib_info_list)
353 dn_fib_info_list->fib_prev = fi;
354 dn_fib_info_list = fi;
355 dn_fib_info_cnt++;
356 write_unlock(&dn_fib_info_lock);
357 return fi;
358
359 err_inval:
360 err = -EINVAL;
361
362 failure:
363 *errp = err;
364 if (fi) {
365 fi->fib_dead = 1;
366 dn_fib_free_info(fi);
367 }
368
369 return NULL;
370 }
371
372
dn_fib_select_multipath(const struct dn_fib_key * key,struct dn_fib_res * res)373 void dn_fib_select_multipath(const struct dn_fib_key *key, struct dn_fib_res *res)
374 {
375 struct dn_fib_info *fi = res->fi;
376 int w;
377
378 if (fi->fib_power <= 0) {
379 int power = 0;
380 change_nexthops(fi) {
381 if (!(nh->nh_flags&RTNH_F_DEAD)) {
382 power += nh->nh_weight;
383 nh->nh_power = nh->nh_weight;
384 }
385 } endfor_nexthops(fi);
386 fi->fib_power = power;
387 }
388
389 w = jiffies % fi->fib_power;
390
391 change_nexthops(fi) {
392 if (!(nh->nh_flags&RTNH_F_DEAD) && nh->nh_power) {
393 if ((w -= nh->nh_power) <= 0) {
394 nh->nh_power--;
395 fi->fib_power--;
396 res->nh_sel = nhsel;
397 return;
398 }
399 }
400 } endfor_nexthops(fi);
401
402 printk(KERN_DEBUG "DECnet: BUG! dn_fib_select_multipath\n");
403 }
404
405
406
407 /*
408 * Punt to user via netlink for example, but for now
409 * we just drop it.
410 */
dn_fib_rt_message(struct sk_buff * skb)411 int dn_fib_rt_message(struct sk_buff *skb)
412 {
413 kfree_skb(skb);
414
415 return 0;
416 }
417
418
dn_fib_check_attr(struct rtmsg * r,struct rtattr ** rta)419 static int dn_fib_check_attr(struct rtmsg *r, struct rtattr **rta)
420 {
421 int i;
422
423 for(i = 1; i <= RTA_MAX; i++) {
424 struct rtattr *attr = rta[i-1];
425 if (attr) {
426 if (RTA_PAYLOAD(attr) < 4 && RTA_PAYLOAD(attr) != 2)
427 return -EINVAL;
428 if (i != RTA_MULTIPATH && i != RTA_METRICS)
429 rta[i-1] = (struct rtattr *)RTA_DATA(attr);
430 }
431 }
432
433 return 0;
434 }
435
dn_fib_rtm_delroute(struct sk_buff * skb,struct nlmsghdr * nlh,void * arg)436 int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
437 {
438 struct dn_fib_table *tb;
439 struct rtattr **rta = arg;
440 struct rtmsg *r = NLMSG_DATA(nlh);
441
442 if (dn_fib_check_attr(r, rta))
443 return -EINVAL;
444
445 tb = dn_fib_get_table(r->rtm_table, 0);
446 if (tb)
447 return tb->delete(tb, r, (struct dn_kern_rta *)rta, nlh, &NETLINK_CB(skb));
448
449 return -ESRCH;
450 }
451
dn_fib_rtm_newroute(struct sk_buff * skb,struct nlmsghdr * nlh,void * arg)452 int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
453 {
454 struct dn_fib_table *tb;
455 struct rtattr **rta = arg;
456 struct rtmsg *r = NLMSG_DATA(nlh);
457
458 if (dn_fib_check_attr(r, rta))
459 return -EINVAL;
460
461 tb = dn_fib_get_table(r->rtm_table, 1);
462 if (tb)
463 return tb->insert(tb, r, (struct dn_kern_rta *)rta, nlh, &NETLINK_CB(skb));
464
465 return -ENOBUFS;
466 }
467
468
dn_fib_dump(struct sk_buff * skb,struct netlink_callback * cb)469 int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb)
470 {
471 int t;
472 int s_t;
473 struct dn_fib_table *tb;
474
475 if (NLMSG_PAYLOAD(cb->nlh, 0) >= sizeof(struct rtmsg) &&
476 ((struct rtmsg *)NLMSG_DATA(cb->nlh))->rtm_flags&RTM_F_CLONED)
477 return dn_cache_dump(skb, cb);
478
479 s_t = cb->args[0];
480 if (s_t == 0)
481 s_t = cb->args[0] = DN_MIN_TABLE;
482
483 for(t = s_t; t < DN_NUM_TABLES; t++) {
484 if (t < s_t)
485 continue;
486 if (t > s_t)
487 memset(&cb->args[1], 0, sizeof(cb->args)-sizeof(int));
488 tb = dn_fib_get_table(t, 0);
489 if (tb == NULL)
490 continue;
491 if (tb->dump(tb, skb, cb) < 0)
492 break;
493 }
494
495 cb->args[0] = t;
496
497 return skb->len;
498 }
499
dn_fib_sync_down(dn_address local,struct net_device * dev,int force)500 int dn_fib_sync_down(dn_address local, struct net_device *dev, int force)
501 {
502 int ret = 0;
503 int scope = RT_SCOPE_NOWHERE;
504
505 if (force)
506 scope = -1;
507
508 for_fib_info() {
509 /*
510 * This makes no sense for DECnet.... we will almost
511 * certainly have more than one local address the same
512 * over all our interfaces. It needs thinking about
513 * some more.
514 */
515 if (local && fi->fib_prefsrc == local) {
516 fi->fib_flags |= RTNH_F_DEAD;
517 ret++;
518 } else if (dev && fi->fib_nhs) {
519 int dead = 0;
520
521 change_nexthops(fi) {
522 if (nh->nh_flags&RTNH_F_DEAD)
523 dead++;
524 else if (nh->nh_dev == dev &&
525 nh->nh_scope != scope) {
526 nh->nh_flags |= RTNH_F_DEAD;
527 fi->fib_power -= nh->nh_power;
528 nh->nh_power = 0;
529 dead++;
530 }
531 } endfor_nexthops(fi)
532 if (dead == fi->fib_nhs) {
533 fi->fib_flags |= RTNH_F_DEAD;
534 ret++;
535 }
536 }
537 } endfor_fib_info();
538 return ret;
539 }
540
541
dn_fib_sync_up(struct net_device * dev)542 int dn_fib_sync_up(struct net_device *dev)
543 {
544 int ret = 0;
545
546 if (!(dev->flags&IFF_UP))
547 return 0;
548
549 for_fib_info() {
550 int alive = 0;
551
552 change_nexthops(fi) {
553 if (!(nh->nh_flags&RTNH_F_DEAD)) {
554 alive++;
555 continue;
556 }
557 if (nh->nh_dev == NULL || !(nh->nh_dev->flags&IFF_UP))
558 continue;
559 if (nh->nh_dev != dev || dev->dn_ptr == NULL)
560 continue;
561 alive++;
562 nh->nh_power = 0;
563 nh->nh_flags &= ~RTNH_F_DEAD;
564 } endfor_nexthops(fi);
565
566 if (alive == fi->fib_nhs) {
567 fi->fib_flags &= ~RTNH_F_DEAD;
568 ret++;
569 }
570 } endfor_fib_info();
571 return ret;
572 }
573
dn_fib_flush(void)574 void dn_fib_flush(void)
575 {
576 int flushed = 0;
577 struct dn_fib_table *tb;
578 int id;
579
580 for(id = DN_NUM_TABLES; id > 0; id--) {
581 if ((tb = dn_fib_get_table(id, 0)) == NULL)
582 continue;
583 flushed += tb->flush(tb);
584 }
585
586 if (flushed)
587 dn_rt_cache_flush(-1);
588 }
589
dn_fib_ioctl(struct socket * sock,unsigned int cmd,unsigned long arg)590 int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
591 {
592
593 if (!capable(CAP_NET_ADMIN))
594 return -EPERM;
595
596 switch(cmd) {
597 case SIOCADDRT:
598 case SIOCDELRT:
599 return 0;
600 }
601
602 return -EINVAL;
603 }
604
605 #ifdef CONFIG_PROC_FS
606
decnet_rt_get_info(char * buffer,char ** start,off_t offset,int length)607 static int decnet_rt_get_info(char *buffer, char **start, off_t offset, int length)
608 {
609 int first = offset / 128;
610 char *ptr = buffer;
611 int count = (length + 127) / 128;
612 int len;
613 int i;
614 struct dn_fib_table *tb;
615
616 *start = buffer + (offset % 128);
617
618 if (--first < 0) {
619 sprintf(buffer, "%-127s\n", "Iface\tDest\tGW \tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU\tWindow\tIRTT");
620 --count;
621 ptr += 128;
622 first = 0;
623 }
624
625
626 for(i = DN_MIN_TABLE; (i <= DN_NUM_TABLES) && (count > 0); i++) {
627 if ((tb = dn_fib_get_table(i, 0)) != NULL) {
628 int n = tb->get_info(tb, ptr, first, count);
629 count -= n;
630 ptr += n * 128;
631 }
632 }
633
634 len = ptr - *start;
635 if (len >= length)
636 return length;
637 if (len >= 0)
638 return len;
639
640 return 0;
641 }
642 #endif /* CONFIG_PROC_FS */
643
dn_fib_cleanup(void)644 void __exit dn_fib_cleanup(void)
645 {
646 proc_net_remove("decnet_route");
647
648 dn_fib_table_cleanup();
649 dn_fib_rules_cleanup();
650 }
651
652
dn_fib_init(void)653 void __init dn_fib_init(void)
654 {
655
656 #ifdef CONFIG_PROC_FS
657 proc_net_create("decnet_route", 0, decnet_rt_get_info);
658 #endif
659
660 dn_fib_table_init();
661 dn_fib_rules_init();
662 }
663
664
665