projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
sysctl net: Remove unused binary sysctl code
[deliverable/linux.git] / net / decnet / dn_dev.c
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 Device Layer
7 *
8 * Authors: Steve Whitehouse <SteveW@ACM.org>
9 * Eduardo Marcelo Serrat <emserrat@geocities.com>
10 *
11 * Changes:
12 * Steve Whitehouse : Devices now see incoming frames so they
13 * can mark on who it came from.
14 * Steve Whitehouse : Fixed bug in creating neighbours. Each neighbour
15 * can now have a device specific setup func.
16 * Steve Whitehouse : Added /proc/sys/net/decnet/conf/<dev>/
17 * Steve Whitehouse : Fixed bug which sometimes killed timer
18 * Steve Whitehouse : Multiple ifaddr support
19 * Steve Whitehouse : SIOCGIFCONF is now a compile time option
20 * Steve Whitehouse : /proc/sys/net/decnet/conf/<sys>/forwarding
21 * Steve Whitehouse : Removed timer1 - it's a user space issue now
22 * Patrick Caulfield : Fixed router hello message format
23 * Steve Whitehouse : Got rid of constant sizes for blksize for
24 * devices. All mtu based now.
25 */
26
27 #include <linux/capability.h>
28 #include <linux/module.h>
29 #include <linux/moduleparam.h>
30 #include <linux/init.h>
31 #include <linux/net.h>
32 #include <linux/netdevice.h>
33 #include <linux/proc_fs.h>
34 #include <linux/seq_file.h>
35 #include <linux/timer.h>
36 #include <linux/string.h>
37 #include <linux/if_addr.h>
38 #include <linux/if_arp.h>
39 #include <linux/if_ether.h>
40 #include <linux/skbuff.h>
41 #include <linux/sysctl.h>
42 #include <linux/notifier.h>
43 #include <asm/uaccess.h>
44 #include <asm/system.h>
45 #include <net/net_namespace.h>
46 #include <net/neighbour.h>
47 #include <net/dst.h>
48 #include <net/flow.h>
49 #include <net/fib_rules.h>
50 #include <net/netlink.h>
51 #include <net/dn.h>
52 #include <net/dn_dev.h>
53 #include <net/dn_route.h>
54 #include <net/dn_neigh.h>
55 #include <net/dn_fib.h>
56
57 #define DN_IFREQ_SIZE (sizeof(struct ifreq) - sizeof(struct sockaddr) + sizeof(struct sockaddr_dn))
58
59 static char dn_rt_all_end_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x04,0x00,0x00};
60 static char dn_rt_all_rt_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x03,0x00,0x00};
61 static char dn_hiord[ETH_ALEN] = {0xAA,0x00,0x04,0x00,0x00,0x00};
62 static unsigned char dn_eco_version[3] = {0x02,0x00,0x00};
63
64 extern struct neigh_table dn_neigh_table;
65
66 /*
67 * decnet_address is kept in network order.
68 */
69 __le16 decnet_address = 0;
70
71 static DEFINE_RWLOCK(dndev_lock);
72 static struct net_device *decnet_default_device;
73 static BLOCKING_NOTIFIER_HEAD(dnaddr_chain);
74
75 static struct dn_dev *dn_dev_create(struct net_device *dev, int *err);
76 static void dn_dev_delete(struct net_device *dev);
77 static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa);
78
79 static int dn_eth_up(struct net_device *);
80 static void dn_eth_down(struct net_device *);
81 static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa);
82 static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa);
83
84 static struct dn_dev_parms dn_dev_list[] = {
85 {
86 .type = ARPHRD_ETHER, /* Ethernet */
87 .mode = DN_DEV_BCAST,
88 .state = DN_DEV_S_RU,
89 .t2 = 1,
90 .t3 = 10,
91 .name = "ethernet",
92 .up = dn_eth_up,
93 .down = dn_eth_down,
94 .timer3 = dn_send_brd_hello,
95 },
96 {
97 .type = ARPHRD_IPGRE, /* DECnet tunneled over GRE in IP */
98 .mode = DN_DEV_BCAST,
99 .state = DN_DEV_S_RU,
100 .t2 = 1,
101 .t3 = 10,
102 .name = "ipgre",
103 .timer3 = dn_send_brd_hello,
104 },
105 #if 0
106 {
107 .type = ARPHRD_X25, /* Bog standard X.25 */
108 .mode = DN_DEV_UCAST,
109 .state = DN_DEV_S_DS,
110 .t2 = 1,
111 .t3 = 120,
112 .name = "x25",
113 .timer3 = dn_send_ptp_hello,
114 },
115 #endif
116 #if 0
117 {
118 .type = ARPHRD_PPP, /* DECnet over PPP */
119 .mode = DN_DEV_BCAST,
120 .state = DN_DEV_S_RU,
121 .t2 = 1,
122 .t3 = 10,
123 .name = "ppp",
124 .timer3 = dn_send_brd_hello,
125 },
126 #endif
127 {
128 .type = ARPHRD_DDCMP, /* DECnet over DDCMP */
129 .mode = DN_DEV_UCAST,
130 .state = DN_DEV_S_DS,
131 .t2 = 1,
132 .t3 = 120,
133 .name = "ddcmp",
134 .timer3 = dn_send_ptp_hello,
135 },
136 {
137 .type = ARPHRD_LOOPBACK, /* Loopback interface - always last */
138 .mode = DN_DEV_BCAST,
139 .state = DN_DEV_S_RU,
140 .t2 = 1,
141 .t3 = 10,
142 .name = "loopback",
143 .timer3 = dn_send_brd_hello,
144 }
145 };
146
147 #define DN_DEV_LIST_SIZE ARRAY_SIZE(dn_dev_list)
148
149 #define DN_DEV_PARMS_OFFSET(x) offsetof(struct dn_dev_parms, x)
150
151 #ifdef CONFIG_SYSCTL
152
153 static int min_t2[] = { 1 };
154 static int max_t2[] = { 60 }; /* No max specified, but this seems sensible */
155 static int min_t3[] = { 1 };
156 static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MULT or T3MULT */
157
158 static int min_priority[1];
159 static int max_priority[] = { 127 }; /* From DECnet spec */
160
161 static int dn_forwarding_proc(ctl_table *, int,
162 void __user *, size_t *, loff_t *);
163 static struct dn_dev_sysctl_table {
164 struct ctl_table_header *sysctl_header;
165 ctl_table dn_dev_vars[5];
166 } dn_dev_sysctl = {
167 NULL,
168 {
169 {
170 .procname = "forwarding",
171 .data = (void *)DN_DEV_PARMS_OFFSET(forwarding),
172 .maxlen = sizeof(int),
173 .mode = 0644,
174 .proc_handler = dn_forwarding_proc,
175 },
176 {
177 .procname = "priority",
178 .data = (void *)DN_DEV_PARMS_OFFSET(priority),
179 .maxlen = sizeof(int),
180 .mode = 0644,
181 .proc_handler = proc_dointvec_minmax,
182 .extra1 = &min_priority,
183 .extra2 = &max_priority
184 },
185 {
186 .procname = "t2",
187 .data = (void *)DN_DEV_PARMS_OFFSET(t2),
188 .maxlen = sizeof(int),
189 .mode = 0644,
190 .proc_handler = proc_dointvec_minmax,
191 .extra1 = &min_t2,
192 .extra2 = &max_t2
193 },
194 {
195 .procname = "t3",
196 .data = (void *)DN_DEV_PARMS_OFFSET(t3),
197 .maxlen = sizeof(int),
198 .mode = 0644,
199 .proc_handler = proc_dointvec_minmax,
200 .extra1 = &min_t3,
201 .extra2 = &max_t3
202 },
203 {0}
204 },
205 };
206
207 static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
208 {
209 struct dn_dev_sysctl_table *t;
210 int i;
211
212 #define DN_CTL_PATH_DEV 3
213
214 struct ctl_path dn_ctl_path[] = {
215 { .procname = "net", },
216 { .procname = "decnet", },
217 { .procname = "conf", },
218 { /* to be set */ },
219 { },
220 };
221
222 t = kmemdup(&dn_dev_sysctl, sizeof(*t), GFP_KERNEL);
223 if (t == NULL)
224 return;
225
226 for(i = 0; i < ARRAY_SIZE(t->dn_dev_vars) - 1; i++) {
227 long offset = (long)t->dn_dev_vars[i].data;
228 t->dn_dev_vars[i].data = ((char *)parms) + offset;
229 }
230
231 if (dev) {
232 dn_ctl_path[DN_CTL_PATH_DEV].procname = dev->name;
233 } else {
234 dn_ctl_path[DN_CTL_PATH_DEV].procname = parms->name;
235 }
236
237 t->dn_dev_vars[0].extra1 = (void *)dev;
238
239 t->sysctl_header = register_sysctl_paths(dn_ctl_path, t->dn_dev_vars);
240 if (t->sysctl_header == NULL)
241 kfree(t);
242 else
243 parms->sysctl = t;
244 }
245
246 static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
247 {
248 if (parms->sysctl) {
249 struct dn_dev_sysctl_table *t = parms->sysctl;
250 parms->sysctl = NULL;
251 unregister_sysctl_table(t->sysctl_header);
252 kfree(t);
253 }
254 }
255
256 static int dn_forwarding_proc(ctl_table *table, int write,
257 void __user *buffer,
258 size_t *lenp, loff_t *ppos)
259 {
260 #ifdef CONFIG_DECNET_ROUTER
261 struct net_device *dev = table->extra1;
262 struct dn_dev *dn_db;
263 int err;
264 int tmp, old;
265
266 if (table->extra1 == NULL)
267 return -EINVAL;
268
269 dn_db = dev->dn_ptr;
270 old = dn_db->parms.forwarding;
271
272 err = proc_dointvec(table, write, buffer, lenp, ppos);
273
274 if ((err >= 0) && write) {
275 if (dn_db->parms.forwarding < 0)
276 dn_db->parms.forwarding = 0;
277 if (dn_db->parms.forwarding > 2)
278 dn_db->parms.forwarding = 2;
279 /*
280 * What an ugly hack this is... its works, just. It
281 * would be nice if sysctl/proc were just that little
282 * bit more flexible so I don't have to write a special
283 * routine, or suffer hacks like this - SJW
284 */
285 tmp = dn_db->parms.forwarding;
286 dn_db->parms.forwarding = old;
287 if (dn_db->parms.down)
288 dn_db->parms.down(dev);
289 dn_db->parms.forwarding = tmp;
290 if (dn_db->parms.up)
291 dn_db->parms.up(dev);
292 }
293
294 return err;
295 #else
296 return -EINVAL;
297 #endif
298 }
299
300 #else /* CONFIG_SYSCTL */
301 static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
302 {
303 }
304 static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
305 {
306 }
307
308 #endif /* CONFIG_SYSCTL */
309
310 static inline __u16 mtu2blksize(struct net_device *dev)
311 {
312 u32 blksize = dev->mtu;
313 if (blksize > 0xffff)
314 blksize = 0xffff;
315
316 if (dev->type == ARPHRD_ETHER ||
317 dev->type == ARPHRD_PPP ||
318 dev->type == ARPHRD_IPGRE ||
319 dev->type == ARPHRD_LOOPBACK)
320 blksize -= 2;
321
322 return (__u16)blksize;
323 }
324
325 static struct dn_ifaddr *dn_dev_alloc_ifa(void)
326 {
327 struct dn_ifaddr *ifa;
328
329 ifa = kzalloc(sizeof(*ifa), GFP_KERNEL);
330
331 return ifa;
332 }
333
334 static __inline__ void dn_dev_free_ifa(struct dn_ifaddr *ifa)
335 {
336 kfree(ifa);
337 }
338
339 static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr **ifap, int destroy)
340 {
341 struct dn_ifaddr *ifa1 = *ifap;
342 unsigned char mac_addr[6];
343 struct net_device *dev = dn_db->dev;
344
345 ASSERT_RTNL();
346
347 *ifap = ifa1->ifa_next;
348
349 if (dn_db->dev->type == ARPHRD_ETHER) {
350 if (ifa1->ifa_local != dn_eth2dn(dev->dev_addr)) {
351 dn_dn2eth(mac_addr, ifa1->ifa_local);
352 dev_mc_delete(dev, mac_addr, ETH_ALEN, 0);
353 }
354 }
355
356 dn_ifaddr_notify(RTM_DELADDR, ifa1);
357 blocking_notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1);
358 if (destroy) {
359 dn_dev_free_ifa(ifa1);
360
361 if (dn_db->ifa_list == NULL)
362 dn_dev_delete(dn_db->dev);
363 }
364 }
365
366 static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
367 {
368 struct net_device *dev = dn_db->dev;
369 struct dn_ifaddr *ifa1;
370 unsigned char mac_addr[6];
371
372 ASSERT_RTNL();
373
374 /* Check for duplicates */
375 for(ifa1 = dn_db->ifa_list; ifa1; ifa1 = ifa1->ifa_next) {
376 if (ifa1->ifa_local == ifa->ifa_local)
377 return -EEXIST;
378 }
379
380 if (dev->type == ARPHRD_ETHER) {
381 if (ifa->ifa_local != dn_eth2dn(dev->dev_addr)) {
382 dn_dn2eth(mac_addr, ifa->ifa_local);
383 dev_mc_add(dev, mac_addr, ETH_ALEN, 0);
384 }
385 }
386
387 ifa->ifa_next = dn_db->ifa_list;
388 dn_db->ifa_list = ifa;
389
390 dn_ifaddr_notify(RTM_NEWADDR, ifa);
391 blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
392
393 return 0;
394 }
395
396 static int dn_dev_set_ifa(struct net_device *dev, struct dn_ifaddr *ifa)
397 {
398 struct dn_dev *dn_db = dev->dn_ptr;
399 int rv;
400
401 if (dn_db == NULL) {
402 int err;
403 dn_db = dn_dev_create(dev, &err);
404 if (dn_db == NULL)
405 return err;
406 }
407
408 ifa->ifa_dev = dn_db;
409
410 if (dev->flags & IFF_LOOPBACK)
411 ifa->ifa_scope = RT_SCOPE_HOST;
412
413 rv = dn_dev_insert_ifa(dn_db, ifa);
414 if (rv)
415 dn_dev_free_ifa(ifa);
416 return rv;
417 }
418
419
420 int dn_dev_ioctl(unsigned int cmd, void __user *arg)
421 {
422 char buffer[DN_IFREQ_SIZE];
423 struct ifreq *ifr = (struct ifreq *)buffer;
424 struct sockaddr_dn *sdn = (struct sockaddr_dn *)&ifr->ifr_addr;
425 struct dn_dev *dn_db;
426 struct net_device *dev;
427 struct dn_ifaddr *ifa = NULL, **ifap = NULL;
428 int ret = 0;
429
430 if (copy_from_user(ifr, arg, DN_IFREQ_SIZE))
431 return -EFAULT;
432 ifr->ifr_name[IFNAMSIZ-1] = 0;
433
434 dev_load(&init_net, ifr->ifr_name);
435
436 switch(cmd) {
437 case SIOCGIFADDR:
438 break;
439 case SIOCSIFADDR:
440 if (!capable(CAP_NET_ADMIN))
441 return -EACCES;
442 if (sdn->sdn_family != AF_DECnet)
443 return -EINVAL;
444 break;
445 default:
446 return -EINVAL;
447 }
448
449 rtnl_lock();
450
451 if ((dev = __dev_get_by_name(&init_net, ifr->ifr_name)) == NULL) {
452 ret = -ENODEV;
453 goto done;
454 }
455
456 if ((dn_db = dev->dn_ptr) != NULL) {
457 for (ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next)
458 if (strcmp(ifr->ifr_name, ifa->ifa_label) == 0)
459 break;
460 }
461
462 if (ifa == NULL && cmd != SIOCSIFADDR) {
463 ret = -EADDRNOTAVAIL;
464 goto done;
465 }
466
467 switch(cmd) {
468 case SIOCGIFADDR:
469 *((__le16 *)sdn->sdn_nodeaddr) = ifa->ifa_local;
470 goto rarok;
471
472 case SIOCSIFADDR:
473 if (!ifa) {
474 if ((ifa = dn_dev_alloc_ifa()) == NULL) {
475 ret = -ENOBUFS;
476 break;
477 }
478 memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
479 } else {
480 if (ifa->ifa_local == dn_saddr2dn(sdn))
481 break;
482 dn_dev_del_ifa(dn_db, ifap, 0);
483 }
484
485 ifa->ifa_local = ifa->ifa_address = dn_saddr2dn(sdn);
486
487 ret = dn_dev_set_ifa(dev, ifa);
488 }
489 done:
490 rtnl_unlock();
491
492 return ret;
493 rarok:
494 if (copy_to_user(arg, ifr, DN_IFREQ_SIZE))
495 ret = -EFAULT;
496 goto done;
497 }
498
499 struct net_device *dn_dev_get_default(void)
500 {
501 struct net_device *dev;
502 read_lock(&dndev_lock);
503 dev = decnet_default_device;
504 if (dev) {
505 if (dev->dn_ptr)
506 dev_hold(dev);
507 else
508 dev = NULL;
509 }
510 read_unlock(&dndev_lock);
511 return dev;
512 }
513
514 int dn_dev_set_default(struct net_device *dev, int force)
515 {
516 struct net_device *old = NULL;
517 int rv = -EBUSY;
518 if (!dev->dn_ptr)
519 return -ENODEV;
520 write_lock(&dndev_lock);
521 if (force || decnet_default_device == NULL) {
522 old = decnet_default_device;
523 decnet_default_device = dev;
524 rv = 0;
525 }
526 write_unlock(&dndev_lock);
527 if (old)
528 dev_put(old);
529 return rv;
530 }
531
532 static void dn_dev_check_default(struct net_device *dev)
533 {
534 write_lock(&dndev_lock);
535 if (dev == decnet_default_device) {
536 decnet_default_device = NULL;
537 } else {
538 dev = NULL;
539 }
540 write_unlock(&dndev_lock);
541 if (dev)
542 dev_put(dev);
543 }
544
545 static struct dn_dev *dn_dev_by_index(int ifindex)
546 {
547 struct net_device *dev;
548 struct dn_dev *dn_dev = NULL;
549 dev = dev_get_by_index(&init_net, ifindex);
550 if (dev) {
551 dn_dev = dev->dn_ptr;
552 dev_put(dev);
553 }
554
555 return dn_dev;
556 }
557
558 static const struct nla_policy dn_ifa_policy[IFA_MAX+1] = {
559 [IFA_ADDRESS] = { .type = NLA_U16 },
560 [IFA_LOCAL] = { .type = NLA_U16 },
561 [IFA_LABEL] = { .type = NLA_STRING,
562 .len = IFNAMSIZ - 1 },
563 };
564
565 static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
566 {
567 struct net *net = sock_net(skb->sk);
568 struct nlattr *tb[IFA_MAX+1];
569 struct dn_dev *dn_db;
570 struct ifaddrmsg *ifm;
571 struct dn_ifaddr *ifa, **ifap;
572 int err = -EINVAL;
573
574 if (net != &init_net)
575 goto errout;
576
577 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
578 if (err < 0)
579 goto errout;
580
581 err = -ENODEV;
582 ifm = nlmsg_data(nlh);
583 if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL)
584 goto errout;
585
586 err = -EADDRNOTAVAIL;
587 for (ifap = &dn_db->ifa_list; (ifa = *ifap); ifap = &ifa->ifa_next) {
588 if (tb[IFA_LOCAL] &&
589 nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2))
590 continue;
591
592 if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label))
593 continue;
594
595 dn_dev_del_ifa(dn_db, ifap, 1);
596 return 0;
597 }
598
599 errout:
600 return err;
601 }
602
603 static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
604 {
605 struct net *net = sock_net(skb->sk);
606 struct nlattr *tb[IFA_MAX+1];
607 struct net_device *dev;
608 struct dn_dev *dn_db;
609 struct ifaddrmsg *ifm;
610 struct dn_ifaddr *ifa;
611 int err;
612
613 if (net != &init_net)
614 return -EINVAL;
615
616 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
617 if (err < 0)
618 return err;
619
620 if (tb[IFA_LOCAL] == NULL)
621 return -EINVAL;
622
623 ifm = nlmsg_data(nlh);
624 if ((dev = __dev_get_by_index(&init_net, ifm->ifa_index)) == NULL)
625 return -ENODEV;
626
627 if ((dn_db = dev->dn_ptr) == NULL) {
628 dn_db = dn_dev_create(dev, &err);
629 if (!dn_db)
630 return err;
631 }
632
633 if ((ifa = dn_dev_alloc_ifa()) == NULL)
634 return -ENOBUFS;
635
636 if (tb[IFA_ADDRESS] == NULL)
637 tb[IFA_ADDRESS] = tb[IFA_LOCAL];
638
639 ifa->ifa_local = nla_get_le16(tb[IFA_LOCAL]);
640 ifa->ifa_address = nla_get_le16(tb[IFA_ADDRESS]);
641 ifa->ifa_flags = ifm->ifa_flags;
642 ifa->ifa_scope = ifm->ifa_scope;
643 ifa->ifa_dev = dn_db;
644
645 if (tb[IFA_LABEL])
646 nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ);
647 else
648 memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
649
650 err = dn_dev_insert_ifa(dn_db, ifa);
651 if (err)
652 dn_dev_free_ifa(ifa);
653
654 return err;
655 }
656
657 static inline size_t dn_ifaddr_nlmsg_size(void)
658 {
659 return NLMSG_ALIGN(sizeof(struct ifaddrmsg))
660 + nla_total_size(IFNAMSIZ) /* IFA_LABEL */
661 + nla_total_size(2) /* IFA_ADDRESS */
662 + nla_total_size(2); /* IFA_LOCAL */
663 }
664
665 static int dn_nl_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa,
666 u32 pid, u32 seq, int event, unsigned int flags)
667 {
668 struct ifaddrmsg *ifm;
669 struct nlmsghdr *nlh;
670
671 nlh = nlmsg_put(skb, pid, seq, event, sizeof(*ifm), flags);
672 if (nlh == NULL)
673 return -EMSGSIZE;
674
675 ifm = nlmsg_data(nlh);
676 ifm->ifa_family = AF_DECnet;
677 ifm->ifa_prefixlen = 16;
678 ifm->ifa_flags = ifa->ifa_flags | IFA_F_PERMANENT;
679 ifm->ifa_scope = ifa->ifa_scope;
680 ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
681
682 if (ifa->ifa_address)
683 NLA_PUT_LE16(skb, IFA_ADDRESS, ifa->ifa_address);
684 if (ifa->ifa_local)
685 NLA_PUT_LE16(skb, IFA_LOCAL, ifa->ifa_local);
686 if (ifa->ifa_label[0])
687 NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label);
688
689 return nlmsg_end(skb, nlh);
690
691 nla_put_failure:
692 nlmsg_cancel(skb, nlh);
693 return -EMSGSIZE;
694 }
695
696 static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa)
697 {
698 struct sk_buff *skb;
699 int err = -ENOBUFS;
700
701 skb = alloc_skb(dn_ifaddr_nlmsg_size(), GFP_KERNEL);
702 if (skb == NULL)
703 goto errout;
704
705 err = dn_nl_fill_ifaddr(skb, ifa, 0, 0, event, 0);
706 if (err < 0) {
707 /* -EMSGSIZE implies BUG in dn_ifaddr_nlmsg_size() */
708 WARN_ON(err == -EMSGSIZE);
709 kfree_skb(skb);
710 goto errout;
711 }
712 rtnl_notify(skb, &init_net, 0, RTNLGRP_DECnet_IFADDR, NULL, GFP_KERNEL);
713 return;
714 errout:
715 if (err < 0)
716 rtnl_set_sk_err(&init_net, RTNLGRP_DECnet_IFADDR, err);
717 }
718
719 static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
720 {
721 struct net *net = sock_net(skb->sk);
722 int idx, dn_idx = 0, skip_ndevs, skip_naddr;
723 struct net_device *dev;
724 struct dn_dev *dn_db;
725 struct dn_ifaddr *ifa;
726
727 if (net != &init_net)
728 return 0;
729
730 skip_ndevs = cb->args[0];
731 skip_naddr = cb->args[1];
732
733 idx = 0;
734 for_each_netdev(&init_net, dev) {
735 if (idx < skip_ndevs)
736 goto cont;
737 else if (idx > skip_ndevs) {
738 /* Only skip over addresses for first dev dumped
739 * in this iteration (idx == skip_ndevs) */
740 skip_naddr = 0;
741 }
742
743 if ((dn_db = dev->dn_ptr) == NULL)
744 goto cont;
745
746 for (ifa = dn_db->ifa_list, dn_idx = 0; ifa;
747 ifa = ifa->ifa_next, dn_idx++) {
748 if (dn_idx < skip_naddr)
749 continue;
750
751 if (dn_nl_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid,
752 cb->nlh->nlmsg_seq, RTM_NEWADDR,
753 NLM_F_MULTI) < 0)
754 goto done;
755 }
756 cont:
757 idx++;
758 }
759 done:
760 cb->args[0] = idx;
761 cb->args[1] = dn_idx;
762
763 return skb->len;
764 }
765
766 static int dn_dev_get_first(struct net_device *dev, __le16 *addr)
767 {
768 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
769 struct dn_ifaddr *ifa;
770 int rv = -ENODEV;
771 if (dn_db == NULL)
772 goto out;
773 ifa = dn_db->ifa_list;
774 if (ifa != NULL) {
775 *addr = ifa->ifa_local;
776 rv = 0;
777 }
778 out:
779 return rv;
780 }
781
782 /*
783 * Find a default address to bind to.
784 *
785 * This is one of those areas where the initial VMS concepts don't really
786 * map onto the Linux concepts, and since we introduced multiple addresses
787 * per interface we have to cope with slightly odd ways of finding out what
788 * "our address" really is. Mostly it's not a problem; for this we just guess
789 * a sensible default. Eventually the routing code will take care of all the
790 * nasties for us I hope.
791 */
792 int dn_dev_bind_default(__le16 *addr)
793 {
794 struct net_device *dev;
795 int rv;
796 dev = dn_dev_get_default();
797 last_chance:
798 if (dev) {
799 read_lock(&dev_base_lock);
800 rv = dn_dev_get_first(dev, addr);
801 read_unlock(&dev_base_lock);
802 dev_put(dev);
803 if (rv == 0 || dev == init_net.loopback_dev)
804 return rv;
805 }
806 dev = init_net.loopback_dev;
807 dev_hold(dev);
808 goto last_chance;
809 }
810
811 static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa)
812 {
813 struct endnode_hello_message *msg;
814 struct sk_buff *skb = NULL;
815 __le16 *pktlen;
816 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
817
818 if ((skb = dn_alloc_skb(NULL, sizeof(*msg), GFP_ATOMIC)) == NULL)
819 return;
820
821 skb->dev = dev;
822
823 msg = (struct endnode_hello_message *)skb_put(skb,sizeof(*msg));
824
825 msg->msgflg = 0x0D;
826 memcpy(msg->tiver, dn_eco_version, 3);
827 dn_dn2eth(msg->id, ifa->ifa_local);
828 msg->iinfo = DN_RT_INFO_ENDN;
829 msg->blksize = cpu_to_le16(mtu2blksize(dev));
830 msg->area = 0x00;
831 memset(msg->seed, 0, 8);
832 memcpy(msg->neighbor, dn_hiord, ETH_ALEN);
833
834 if (dn_db->router) {
835 struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
836 dn_dn2eth(msg->neighbor, dn->addr);
837 }
838
839 msg->timer = cpu_to_le16((unsigned short)dn_db->parms.t3);
840 msg->mpd = 0x00;
841 msg->datalen = 0x02;
842 memset(msg->data, 0xAA, 2);
843
844 pktlen = (__le16 *)skb_push(skb,2);
845 *pktlen = cpu_to_le16(skb->len - 2);
846
847 skb_reset_network_header(skb);
848
849 dn_rt_finish_output(skb, dn_rt_all_rt_mcast, msg->id);
850 }
851
852
853 #define DRDELAY (5 * HZ)
854
855 static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db, struct dn_ifaddr *ifa)
856 {
857 /* First check time since device went up */
858 if ((jiffies - dn_db->uptime) < DRDELAY)
859 return 0;
860
861 /* If there is no router, then yes... */
862 if (!dn_db->router)
863 return 1;
864
865 /* otherwise only if we have a higher priority or.. */
866 if (dn->priority < dn_db->parms.priority)
867 return 1;
868
869 /* if we have equal priority and a higher node number */
870 if (dn->priority != dn_db->parms.priority)
871 return 0;
872
873 if (le16_to_cpu(dn->addr) < le16_to_cpu(ifa->ifa_local))
874 return 1;
875
876 return 0;
877 }
878
879 static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa)
880 {
881 int n;
882 struct dn_dev *dn_db = dev->dn_ptr;
883 struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
884 struct sk_buff *skb;
885 size_t size;
886 unsigned char *ptr;
887 unsigned char *i1, *i2;
888 __le16 *pktlen;
889 char *src;
890
891 if (mtu2blksize(dev) < (26 + 7))
892 return;
893
894 n = mtu2blksize(dev) - 26;
895 n /= 7;
896
897 if (n > 32)
898 n = 32;
899
900 size = 2 + 26 + 7 * n;
901
902 if ((skb = dn_alloc_skb(NULL, size, GFP_ATOMIC)) == NULL)
903 return;
904
905 skb->dev = dev;
906 ptr = skb_put(skb, size);
907
908 *ptr++ = DN_RT_PKT_CNTL | DN_RT_PKT_ERTH;
909 *ptr++ = 2; /* ECO */
910 *ptr++ = 0;
911 *ptr++ = 0;
912 dn_dn2eth(ptr, ifa->ifa_local);
913 src = ptr;
914 ptr += ETH_ALEN;
915 *ptr++ = dn_db->parms.forwarding == 1 ?
916 DN_RT_INFO_L1RT : DN_RT_INFO_L2RT;
917 *((__le16 *)ptr) = cpu_to_le16(mtu2blksize(dev));
918 ptr += 2;
919 *ptr++ = dn_db->parms.priority; /* Priority */
920 *ptr++ = 0; /* Area: Reserved */
921 *((__le16 *)ptr) = cpu_to_le16((unsigned short)dn_db->parms.t3);
922 ptr += 2;
923 *ptr++ = 0; /* MPD: Reserved */
924 i1 = ptr++;
925 memset(ptr, 0, 7); /* Name: Reserved */
926 ptr += 7;
927 i2 = ptr++;
928
929 n = dn_neigh_elist(dev, ptr, n);
930
931 *i2 = 7 * n;
932 *i1 = 8 + *i2;
933
934 skb_trim(skb, (27 + *i2));
935
936 pktlen = (__le16 *)skb_push(skb, 2);
937 *pktlen = cpu_to_le16(skb->len - 2);
938
939 skb_reset_network_header(skb);
940
941 if (dn_am_i_a_router(dn, dn_db, ifa)) {
942 struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
943 if (skb2) {
944 dn_rt_finish_output(skb2, dn_rt_all_end_mcast, src);
945 }
946 }
947
948 dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src);
949 }
950
951 static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa)
952 {
953 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
954
955 if (dn_db->parms.forwarding == 0)
956 dn_send_endnode_hello(dev, ifa);
957 else
958 dn_send_router_hello(dev, ifa);
959 }
960
961 static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa)
962 {
963 int tdlen = 16;
964 int size = dev->hard_header_len + 2 + 4 + tdlen;
965 struct sk_buff *skb = dn_alloc_skb(NULL, size, GFP_ATOMIC);
966 int i;
967 unsigned char *ptr;
968 char src[ETH_ALEN];
969
970 if (skb == NULL)
971 return ;
972
973 skb->dev = dev;
974 skb_push(skb, dev->hard_header_len);
975 ptr = skb_put(skb, 2 + 4 + tdlen);
976
977 *ptr++ = DN_RT_PKT_HELO;
978 *((__le16 *)ptr) = ifa->ifa_local;
979 ptr += 2;
980 *ptr++ = tdlen;
981
982 for(i = 0; i < tdlen; i++)
983 *ptr++ = 0252;
984
985 dn_dn2eth(src, ifa->ifa_local);
986 dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src);
987 }
988
989 static int dn_eth_up(struct net_device *dev)
990 {
991 struct dn_dev *dn_db = dev->dn_ptr;
992
993 if (dn_db->parms.forwarding == 0)
994 dev_mc_add(dev, dn_rt_all_end_mcast, ETH_ALEN, 0);
995 else
996 dev_mc_add(dev, dn_rt_all_rt_mcast, ETH_ALEN, 0);
997
998 dn_db->use_long = 1;
999
1000 return 0;
1001 }
1002
1003 static void dn_eth_down(struct net_device *dev)
1004 {
1005 struct dn_dev *dn_db = dev->dn_ptr;
1006
1007 if (dn_db->parms.forwarding == 0)
1008 dev_mc_delete(dev, dn_rt_all_end_mcast, ETH_ALEN, 0);
1009 else
1010 dev_mc_delete(dev, dn_rt_all_rt_mcast, ETH_ALEN, 0);
1011 }
1012
1013 static void dn_dev_set_timer(struct net_device *dev);
1014
1015 static void dn_dev_timer_func(unsigned long arg)
1016 {
1017 struct net_device *dev = (struct net_device *)arg;
1018 struct dn_dev *dn_db = dev->dn_ptr;
1019 struct dn_ifaddr *ifa;
1020
1021 if (dn_db->t3 <= dn_db->parms.t2) {
1022 if (dn_db->parms.timer3) {
1023 for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) {
1024 if (!(ifa->ifa_flags & IFA_F_SECONDARY))
1025 dn_db->parms.timer3(dev, ifa);
1026 }
1027 }
1028 dn_db->t3 = dn_db->parms.t3;
1029 } else {
1030 dn_db->t3 -= dn_db->parms.t2;
1031 }
1032
1033 dn_dev_set_timer(dev);
1034 }
1035
1036 static void dn_dev_set_timer(struct net_device *dev)
1037 {
1038 struct dn_dev *dn_db = dev->dn_ptr;
1039
1040 if (dn_db->parms.t2 > dn_db->parms.t3)
1041 dn_db->parms.t2 = dn_db->parms.t3;
1042
1043 dn_db->timer.data = (unsigned long)dev;
1044 dn_db->timer.function = dn_dev_timer_func;
1045 dn_db->timer.expires = jiffies + (dn_db->parms.t2 * HZ);
1046
1047 add_timer(&dn_db->timer);
1048 }
1049
1050 static struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
1051 {
1052 int i;
1053 struct dn_dev_parms *p = dn_dev_list;
1054 struct dn_dev *dn_db;
1055
1056 for(i = 0; i < DN_DEV_LIST_SIZE; i++, p++) {
1057 if (p->type == dev->type)
1058 break;
1059 }
1060
1061 *err = -ENODEV;
1062 if (i == DN_DEV_LIST_SIZE)
1063 return NULL;
1064
1065 *err = -ENOBUFS;
1066 if ((dn_db = kzalloc(sizeof(struct dn_dev), GFP_ATOMIC)) == NULL)
1067 return NULL;
1068
1069 memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
1070 smp_wmb();
1071 dev->dn_ptr = dn_db;
1072 dn_db->dev = dev;
1073 init_timer(&dn_db->timer);
1074
1075 dn_db->uptime = jiffies;
1076
1077 dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
1078 if (!dn_db->neigh_parms) {
1079 dev->dn_ptr = NULL;
1080 kfree(dn_db);
1081 return NULL;
1082 }
1083
1084 if (dn_db->parms.up) {
1085 if (dn_db->parms.up(dev) < 0) {
1086 neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms);
1087 dev->dn_ptr = NULL;
1088 kfree(dn_db);
1089 return NULL;
1090 }
1091 }
1092
1093 dn_dev_sysctl_register(dev, &dn_db->parms);
1094
1095 dn_dev_set_timer(dev);
1096
1097 *err = 0;
1098 return dn_db;
1099 }
1100
1101
1102 /*
1103 * This processes a device up event. We only start up
1104 * the loopback device & ethernet devices with correct
1105 * MAC addreses automatically. Others must be started
1106 * specifically.
1107 *
1108 * FIXME: How should we configure the loopback address ? If we could dispense
1109 * with using decnet_address here and for autobind, it will be one less thing
1110 * for users to worry about setting up.
1111 */
1112
1113 void dn_dev_up(struct net_device *dev)
1114 {
1115 struct dn_ifaddr *ifa;
1116 __le16 addr = decnet_address;
1117 int maybe_default = 0;
1118 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
1119
1120 if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))
1121 return;
1122
1123 /*
1124 * Need to ensure that loopback device has a dn_db attached to it
1125 * to allow creation of neighbours against it, even though it might
1126 * not have a local address of its own. Might as well do the same for
1127 * all autoconfigured interfaces.
1128 */
1129 if (dn_db == NULL) {
1130 int err;
1131 dn_db = dn_dev_create(dev, &err);
1132 if (dn_db == NULL)
1133 return;
1134 }
1135
1136 if (dev->type == ARPHRD_ETHER) {
1137 if (memcmp(dev->dev_addr, dn_hiord, 4) != 0)
1138 return;
1139 addr = dn_eth2dn(dev->dev_addr);
1140 maybe_default = 1;
1141 }
1142
1143 if (addr == 0)
1144 return;
1145
1146 if ((ifa = dn_dev_alloc_ifa()) == NULL)
1147 return;
1148
1149 ifa->ifa_local = ifa->ifa_address = addr;
1150 ifa->ifa_flags = 0;
1151 ifa->ifa_scope = RT_SCOPE_UNIVERSE;
1152 strcpy(ifa->ifa_label, dev->name);
1153
1154 dn_dev_set_ifa(dev, ifa);
1155
1156 /*
1157 * Automagically set the default device to the first automatically
1158 * configured ethernet card in the system.
1159 */
1160 if (maybe_default) {
1161 dev_hold(dev);
1162 if (dn_dev_set_default(dev, 0))
1163 dev_put(dev);
1164 }
1165 }
1166
1167 static void dn_dev_delete(struct net_device *dev)
1168 {
1169 struct dn_dev *dn_db = dev->dn_ptr;
1170
1171 if (dn_db == NULL)
1172 return;
1173
1174 del_timer_sync(&dn_db->timer);
1175 dn_dev_sysctl_unregister(&dn_db->parms);
1176 dn_dev_check_default(dev);
1177 neigh_ifdown(&dn_neigh_table, dev);
1178
1179 if (dn_db->parms.down)
1180 dn_db->parms.down(dev);
1181
1182 dev->dn_ptr = NULL;
1183
1184 neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms);
1185 neigh_ifdown(&dn_neigh_table, dev);
1186
1187 if (dn_db->router)
1188 neigh_release(dn_db->router);
1189 if (dn_db->peer)
1190 neigh_release(dn_db->peer);
1191
1192 kfree(dn_db);
1193 }
1194
1195 void dn_dev_down(struct net_device *dev)
1196 {
1197 struct dn_dev *dn_db = dev->dn_ptr;
1198 struct dn_ifaddr *ifa;
1199
1200 if (dn_db == NULL)
1201 return;
1202
1203 while((ifa = dn_db->ifa_list) != NULL) {
1204 dn_dev_del_ifa(dn_db, &dn_db->ifa_list, 0);
1205 dn_dev_free_ifa(ifa);
1206 }
1207
1208 dn_dev_delete(dev);
1209 }
1210
1211 void dn_dev_init_pkt(struct sk_buff *skb)
1212 {
1213 return;
1214 }
1215
1216 void dn_dev_veri_pkt(struct sk_buff *skb)
1217 {
1218 return;
1219 }
1220
1221 void dn_dev_hello(struct sk_buff *skb)
1222 {
1223 return;
1224 }
1225
1226 void dn_dev_devices_off(void)
1227 {
1228 struct net_device *dev;
1229
1230 rtnl_lock();
1231 for_each_netdev(&init_net, dev)
1232 dn_dev_down(dev);
1233 rtnl_unlock();
1234
1235 }
1236
1237 void dn_dev_devices_on(void)
1238 {
1239 struct net_device *dev;
1240
1241 rtnl_lock();
1242 for_each_netdev(&init_net, dev) {
1243 if (dev->flags & IFF_UP)
1244 dn_dev_up(dev);
1245 }
1246 rtnl_unlock();
1247 }
1248
1249 int register_dnaddr_notifier(struct notifier_block *nb)
1250 {
1251 return blocking_notifier_chain_register(&dnaddr_chain, nb);
1252 }
1253
1254 int unregister_dnaddr_notifier(struct notifier_block *nb)
1255 {
1256 return blocking_notifier_chain_unregister(&dnaddr_chain, nb);
1257 }
1258
1259 #ifdef CONFIG_PROC_FS
1260 static inline int is_dn_dev(struct net_device *dev)
1261 {
1262 return dev->dn_ptr != NULL;
1263 }
1264
1265 static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
1266 __acquires(&dev_base_lock)
1267 {
1268 int i;
1269 struct net_device *dev;
1270
1271 read_lock(&dev_base_lock);
1272
1273 if (*pos == 0)
1274 return SEQ_START_TOKEN;
1275
1276 i = 1;
1277 for_each_netdev(&init_net, dev) {
1278 if (!is_dn_dev(dev))
1279 continue;
1280
1281 if (i++ == *pos)
1282 return dev;
1283 }
1284
1285 return NULL;
1286 }
1287
1288 static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1289 {
1290 struct net_device *dev;
1291
1292 ++*pos;
1293
1294 dev = (struct net_device *)v;
1295 if (v == SEQ_START_TOKEN)
1296 dev = net_device_entry(&init_net.dev_base_head);
1297
1298 for_each_netdev_continue(&init_net, dev) {
1299 if (!is_dn_dev(dev))
1300 continue;
1301
1302 return dev;
1303 }
1304
1305 return NULL;
1306 }
1307
1308 static void dn_dev_seq_stop(struct seq_file *seq, void *v)
1309 __releases(&dev_base_lock)
1310 {
1311 read_unlock(&dev_base_lock);
1312 }
1313
1314 static char *dn_type2asc(char type)
1315 {
1316 switch(type) {
1317 case DN_DEV_BCAST:
1318 return "B";
1319 case DN_DEV_UCAST:
1320 return "U";
1321 case DN_DEV_MPOINT:
1322 return "M";
1323 }
1324
1325 return "?";
1326 }
1327
1328 static int dn_dev_seq_show(struct seq_file *seq, void *v)
1329 {
1330 if (v == SEQ_START_TOKEN)
1331 seq_puts(seq, "Name Flags T1 Timer1 T3 Timer3 BlkSize Pri State DevType Router Peer\n");
1332 else {
1333 struct net_device *dev = v;
1334 char peer_buf[DN_ASCBUF_LEN];
1335 char router_buf[DN_ASCBUF_LEN];
1336 struct dn_dev *dn_db = dev->dn_ptr;
1337
1338 seq_printf(seq, "%-8s %1s %04u %04u %04lu %04lu"
1339 " %04hu %03d %02x %-10s %-7s %-7s\n",
1340 dev->name ? dev->name : "???",
1341 dn_type2asc(dn_db->parms.mode),
1342 0, 0,
1343 dn_db->t3, dn_db->parms.t3,
1344 mtu2blksize(dev),
1345 dn_db->parms.priority,
1346 dn_db->parms.state, dn_db->parms.name,
1347 dn_db->router ? dn_addr2asc(le16_to_cpu(*(__le16 *)dn_db->router->primary_key), router_buf) : "",
1348 dn_db->peer ? dn_addr2asc(le16_to_cpu(*(__le16 *)dn_db->peer->primary_key), peer_buf) : "");
1349 }
1350 return 0;
1351 }
1352
1353 static const struct seq_operations dn_dev_seq_ops = {
1354 .start = dn_dev_seq_start,
1355 .next = dn_dev_seq_next,
1356 .stop = dn_dev_seq_stop,
1357 .show = dn_dev_seq_show,
1358 };
1359
1360 static int dn_dev_seq_open(struct inode *inode, struct file *file)
1361 {
1362 return seq_open(file, &dn_dev_seq_ops);
1363 }
1364
1365 static const struct file_operations dn_dev_seq_fops = {
1366 .owner = THIS_MODULE,
1367 .open = dn_dev_seq_open,
1368 .read = seq_read,
1369 .llseek = seq_lseek,
1370 .release = seq_release,
1371 };
1372
1373 #endif /* CONFIG_PROC_FS */
1374
1375 static int addr[2];
1376 module_param_array(addr, int, NULL, 0444);
1377 MODULE_PARM_DESC(addr, "The DECnet address of this machine: area,node");
1378
1379 void __init dn_dev_init(void)
1380 {
1381 if (addr[0] > 63 || addr[0] < 0) {
1382 printk(KERN_ERR "DECnet: Area must be between 0 and 63");
1383 return;
1384 }
1385
1386 if (addr[1] > 1023 || addr[1] < 0) {
1387 printk(KERN_ERR "DECnet: Node must be between 0 and 1023");
1388 return;
1389 }
1390
1391 decnet_address = cpu_to_le16((addr[0] << 10) | addr[1]);
1392
1393 dn_dev_devices_on();
1394
1395 rtnl_register(PF_DECnet, RTM_NEWADDR, dn_nl_newaddr, NULL);
1396 rtnl_register(PF_DECnet, RTM_DELADDR, dn_nl_deladdr, NULL);
1397 rtnl_register(PF_DECnet, RTM_GETADDR, NULL, dn_nl_dump_ifaddr);
1398
1399 proc_net_fops_create(&init_net, "decnet_dev", S_IRUGO, &dn_dev_seq_fops);
1400
1401 #ifdef CONFIG_SYSCTL
1402 {
1403 int i;
1404 for(i = 0; i < DN_DEV_LIST_SIZE; i++)
1405 dn_dev_sysctl_register(NULL, &dn_dev_list[i]);
1406 }
1407 #endif /* CONFIG_SYSCTL */
1408 }
1409
1410 void __exit dn_dev_cleanup(void)
1411 {
1412 #ifdef CONFIG_SYSCTL
1413 {
1414 int i;
1415 for(i = 0; i < DN_DEV_LIST_SIZE; i++)
1416 dn_dev_sysctl_unregister(&dn_dev_list[i]);
1417 }
1418 #endif /* CONFIG_SYSCTL */
1419
1420 proc_net_remove(&init_net, "decnet_dev");
1421
1422 dn_dev_devices_off();
1423 }
Linux kernel - Deliverables
This page took 0.074829 seconds and 5 git commands to generate.