netlink.c revision cb6b3763571570ebde1e82524c8a45a4275c8f11 
1/*
2 * Netlink inteface for IEEE 802.15.4 stack
3 *
4 * Copyright 2007, 2008 Siemens AG
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Written by:
20 * Sergey Lapin <slapin@ossfans.org>
21 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
22 * Maxim Osipov <maxim.osipov@siemens.com>
23 */
24
25#include <linux/kernel.h>
26#include <linux/if_arp.h>
27#include <linux/netdevice.h>
28#include <net/netlink.h>
29#include <net/genetlink.h>
30#include <net/sock.h>
31#include <linux/nl802154.h>
32#include <net/af_ieee802154.h>
33#include <net/nl802154.h>
34#include <net/ieee802154.h>
35#include <net/ieee802154_netdev.h>
36
37static unsigned int ieee802154_seq_num;
38static DEFINE_SPINLOCK(ieee802154_seq_lock);
39
40static struct genl_family ieee802154_coordinator_family = {
41	.id		= GENL_ID_GENERATE,
42	.hdrsize	= 0,
43	.name		= IEEE802154_NL_NAME,
44	.version	= 1,
45	.maxattr	= IEEE802154_ATTR_MAX,
46};
47
48static struct genl_multicast_group ieee802154_coord_mcgrp = {
49	.name		= IEEE802154_MCAST_COORD_NAME,
50};
51
52static struct genl_multicast_group ieee802154_beacon_mcgrp = {
53	.name		= IEEE802154_MCAST_BEACON_NAME,
54};
55
56/* Requests to userspace */
57static struct sk_buff *ieee802154_nl_create(int flags, u8 req)
58{
59	void *hdr;
60	struct sk_buff *msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
61	unsigned long f;
62
63	if (!msg)
64		return NULL;
65
66	spin_lock_irqsave(&ieee802154_seq_lock, f);
67	hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
68			&ieee802154_coordinator_family, flags, req);
69	spin_unlock_irqrestore(&ieee802154_seq_lock, f);
70	if (!hdr) {
71		nlmsg_free(msg);
72		return NULL;
73	}
74
75	return msg;
76}
77
78static int ieee802154_nl_finish(struct sk_buff *msg)
79{
80	/* XXX: nlh is right at the start of msg */
81	void *hdr = genlmsg_data(NLMSG_DATA(msg->data));
82
83	if (genlmsg_end(msg, hdr) < 0)
84		goto out;
85
86	return genlmsg_multicast(msg, 0, ieee802154_coord_mcgrp.id,
87			GFP_ATOMIC);
88out:
89	nlmsg_free(msg);
90	return -ENOBUFS;
91}
92
93int ieee802154_nl_assoc_indic(struct net_device *dev,
94		struct ieee802154_addr *addr, u8 cap)
95{
96	struct sk_buff *msg;
97
98	pr_debug("%s\n", __func__);
99
100	if (addr->addr_type != IEEE802154_ADDR_LONG) {
101		pr_err("%s: received non-long source address!\n", __func__);
102		return -EINVAL;
103	}
104
105	msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_INDIC);
106	if (!msg)
107		return -ENOBUFS;
108
109	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
110	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
111	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
112			dev->dev_addr);
113
114	NLA_PUT(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
115			addr->hwaddr);
116
117	NLA_PUT_U8(msg, IEEE802154_ATTR_CAPABILITY, cap);
118
119	return ieee802154_nl_finish(msg);
120
121nla_put_failure:
122	nlmsg_free(msg);
123	return -ENOBUFS;
124}
125EXPORT_SYMBOL(ieee802154_nl_assoc_indic);
126
127int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
128		u8 status)
129{
130	struct sk_buff *msg;
131
132	pr_debug("%s\n", __func__);
133
134	msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_CONF);
135	if (!msg)
136		return -ENOBUFS;
137
138	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
139	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
140	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
141			dev->dev_addr);
142
143	NLA_PUT_U16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr);
144	NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
145
146	return ieee802154_nl_finish(msg);
147
148nla_put_failure:
149	nlmsg_free(msg);
150	return -ENOBUFS;
151}
152EXPORT_SYMBOL(ieee802154_nl_assoc_confirm);
153
154int ieee802154_nl_disassoc_indic(struct net_device *dev,
155		struct ieee802154_addr *addr, u8 reason)
156{
157	struct sk_buff *msg;
158
159	pr_debug("%s\n", __func__);
160
161	msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_INDIC);
162	if (!msg)
163		return -ENOBUFS;
164
165	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
166	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
167	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
168			dev->dev_addr);
169
170	if (addr->addr_type == IEEE802154_ADDR_LONG)
171		NLA_PUT(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
172				addr->hwaddr);
173	else
174		NLA_PUT_U16(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
175				addr->short_addr);
176
177	NLA_PUT_U8(msg, IEEE802154_ATTR_REASON, reason);
178
179	return ieee802154_nl_finish(msg);
180
181nla_put_failure:
182	nlmsg_free(msg);
183	return -ENOBUFS;
184}
185EXPORT_SYMBOL(ieee802154_nl_disassoc_indic);
186
187int ieee802154_nl_disassoc_confirm(struct net_device *dev, u8 status)
188{
189	struct sk_buff *msg;
190
191	pr_debug("%s\n", __func__);
192
193	msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_CONF);
194	if (!msg)
195		return -ENOBUFS;
196
197	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
198	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
199	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
200			dev->dev_addr);
201
202	NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
203
204	return ieee802154_nl_finish(msg);
205
206nla_put_failure:
207	nlmsg_free(msg);
208	return -ENOBUFS;
209}
210EXPORT_SYMBOL(ieee802154_nl_disassoc_confirm);
211
212int ieee802154_nl_beacon_indic(struct net_device *dev,
213		u16 panid, u16 coord_addr)
214{
215	struct sk_buff *msg;
216
217	pr_debug("%s\n", __func__);
218
219	msg = ieee802154_nl_create(0, IEEE802154_BEACON_NOTIFY_INDIC);
220	if (!msg)
221		return -ENOBUFS;
222
223	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
224	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
225	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
226			dev->dev_addr);
227	NLA_PUT_U16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR, coord_addr);
228	NLA_PUT_U16(msg, IEEE802154_ATTR_COORD_PAN_ID, panid);
229
230	return ieee802154_nl_finish(msg);
231
232nla_put_failure:
233	nlmsg_free(msg);
234	return -ENOBUFS;
235}
236EXPORT_SYMBOL(ieee802154_nl_beacon_indic);
237
238int ieee802154_nl_scan_confirm(struct net_device *dev,
239		u8 status, u8 scan_type, u32 unscanned, u8 page,
240		u8 *edl/* , struct list_head *pan_desc_list */)
241{
242	struct sk_buff *msg;
243
244	pr_debug("%s\n", __func__);
245
246	msg = ieee802154_nl_create(0, IEEE802154_SCAN_CONF);
247	if (!msg)
248		return -ENOBUFS;
249
250	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
251	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
252	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
253			dev->dev_addr);
254
255	NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
256	NLA_PUT_U8(msg, IEEE802154_ATTR_SCAN_TYPE, scan_type);
257	NLA_PUT_U32(msg, IEEE802154_ATTR_CHANNELS, unscanned);
258	NLA_PUT_U8(msg, IEEE802154_ATTR_PAGE, page);
259
260	if (edl)
261		NLA_PUT(msg, IEEE802154_ATTR_ED_LIST, 27, edl);
262
263	return ieee802154_nl_finish(msg);
264
265nla_put_failure:
266	nlmsg_free(msg);
267	return -ENOBUFS;
268}
269EXPORT_SYMBOL(ieee802154_nl_scan_confirm);
270
271int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
272{
273	struct sk_buff *msg;
274
275	pr_debug("%s\n", __func__);
276
277	msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
278	if (!msg)
279		return -ENOBUFS;
280
281	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
282	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
283	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
284			dev->dev_addr);
285
286	NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
287
288	return ieee802154_nl_finish(msg);
289
290nla_put_failure:
291	nlmsg_free(msg);
292	return -ENOBUFS;
293}
294EXPORT_SYMBOL(ieee802154_nl_start_confirm);
295
296static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 pid,
297	u32 seq, int flags, struct net_device *dev)
298{
299	void *hdr;
300
301	pr_debug("%s\n", __func__);
302
303	hdr = genlmsg_put(msg, 0, seq, &ieee802154_coordinator_family, flags,
304		IEEE802154_LIST_IFACE);
305	if (!hdr)
306		goto out;
307
308	NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
309	NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
310
311	NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
312		dev->dev_addr);
313	NLA_PUT_U16(msg, IEEE802154_ATTR_SHORT_ADDR,
314		ieee802154_mlme_ops(dev)->get_short_addr(dev));
315	NLA_PUT_U16(msg, IEEE802154_ATTR_PAN_ID,
316		ieee802154_mlme_ops(dev)->get_pan_id(dev));
317	return genlmsg_end(msg, hdr);
318
319nla_put_failure:
320	genlmsg_cancel(msg, hdr);
321out:
322	return -EMSGSIZE;
323}
324
325/* Requests from userspace */
326static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
327{
328	struct net_device *dev;
329
330	if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
331		char name[IFNAMSIZ + 1];
332		nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
333				sizeof(name));
334		dev = dev_get_by_name(&init_net, name);
335	} else if (info->attrs[IEEE802154_ATTR_DEV_INDEX])
336		dev = dev_get_by_index(&init_net,
337			nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
338	else
339		return NULL;
340
341	if (!dev)
342		return NULL;
343
344	if (dev->type != ARPHRD_IEEE802154) {
345		dev_put(dev);
346		return NULL;
347	}
348
349	return dev;
350}
351
352static int ieee802154_associate_req(struct sk_buff *skb,
353		struct genl_info *info)
354{
355	struct net_device *dev;
356	struct ieee802154_addr addr;
357	u8 page;
358	int ret = -EINVAL;
359
360	if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
361	    !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
362	    (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
363		!info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
364	    !info->attrs[IEEE802154_ATTR_CAPABILITY])
365		return -EINVAL;
366
367	dev = ieee802154_nl_get_dev(info);
368	if (!dev)
369		return -ENODEV;
370
371	if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
372		addr.addr_type = IEEE802154_ADDR_LONG;
373		nla_memcpy(addr.hwaddr,
374				info->attrs[IEEE802154_ATTR_COORD_HW_ADDR],
375				IEEE802154_ADDR_LEN);
376	} else {
377		addr.addr_type = IEEE802154_ADDR_SHORT;
378		addr.short_addr = nla_get_u16(
379				info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
380	}
381	addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
382
383	if (info->attrs[IEEE802154_ATTR_PAGE])
384		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
385	else
386		page = 0;
387
388	ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
389			nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
390			page,
391			nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
392
393	dev_put(dev);
394	return ret;
395}
396
397static int ieee802154_associate_resp(struct sk_buff *skb,
398		struct genl_info *info)
399{
400	struct net_device *dev;
401	struct ieee802154_addr addr;
402	int ret = -EINVAL;
403
404	if (!info->attrs[IEEE802154_ATTR_STATUS] ||
405	    !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
406	    !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
407		return -EINVAL;
408
409	dev = ieee802154_nl_get_dev(info);
410	if (!dev)
411		return -ENODEV;
412
413	addr.addr_type = IEEE802154_ADDR_LONG;
414	nla_memcpy(addr.hwaddr, info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
415			IEEE802154_ADDR_LEN);
416	addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
417
418
419	ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
420		nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
421		nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
422
423	dev_put(dev);
424	return ret;
425}
426
427static int ieee802154_disassociate_req(struct sk_buff *skb,
428		struct genl_info *info)
429{
430	struct net_device *dev;
431	struct ieee802154_addr addr;
432	int ret = -EINVAL;
433
434	if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
435		!info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
436	    !info->attrs[IEEE802154_ATTR_REASON])
437		return -EINVAL;
438
439	dev = ieee802154_nl_get_dev(info);
440	if (!dev)
441		return -ENODEV;
442
443	if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
444		addr.addr_type = IEEE802154_ADDR_LONG;
445		nla_memcpy(addr.hwaddr,
446				info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
447				IEEE802154_ADDR_LEN);
448	} else {
449		addr.addr_type = IEEE802154_ADDR_SHORT;
450		addr.short_addr = nla_get_u16(
451				info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
452	}
453	addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
454
455	ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
456			nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
457
458	dev_put(dev);
459	return ret;
460}
461
462/*
463 * PANid, channel, beacon_order = 15, superframe_order = 15,
464 * PAN_coordinator, battery_life_extension = 0,
465 * coord_realignment = 0, security_enable = 0
466*/
467static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
468{
469	struct net_device *dev;
470	struct ieee802154_addr addr;
471
472	u8 channel, bcn_ord, sf_ord;
473	u8 page;
474	int pan_coord, blx, coord_realign;
475	int ret;
476
477	if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
478	    !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
479	    !info->attrs[IEEE802154_ATTR_CHANNEL] ||
480	    !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
481	    !info->attrs[IEEE802154_ATTR_SF_ORD] ||
482	    !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
483	    !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
484	    !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
485	 )
486		return -EINVAL;
487
488	dev = ieee802154_nl_get_dev(info);
489	if (!dev)
490		return -ENODEV;
491
492	addr.addr_type = IEEE802154_ADDR_SHORT;
493	addr.short_addr = nla_get_u16(
494			info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
495	addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
496
497	channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
498	bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
499	sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
500	pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
501	blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
502	coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
503
504	if (info->attrs[IEEE802154_ATTR_PAGE])
505		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
506	else
507		page = 0;
508
509
510	if (addr.short_addr == IEEE802154_ADDR_BROADCAST) {
511		ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
512		dev_put(dev);
513		return -EINVAL;
514	}
515
516	ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
517		bcn_ord, sf_ord, pan_coord, blx, coord_realign);
518
519	dev_put(dev);
520	return ret;
521}
522
523static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
524{
525	struct net_device *dev;
526	int ret;
527	u8 type;
528	u32 channels;
529	u8 duration;
530	u8 page;
531
532	if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
533	    !info->attrs[IEEE802154_ATTR_CHANNELS] ||
534	    !info->attrs[IEEE802154_ATTR_DURATION])
535		return -EINVAL;
536
537	dev = ieee802154_nl_get_dev(info);
538	if (!dev)
539		return -ENODEV;
540
541	type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
542	channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
543	duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
544
545	if (info->attrs[IEEE802154_ATTR_PAGE])
546		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
547	else
548		page = 0;
549
550
551	ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels, page,
552			duration);
553
554	dev_put(dev);
555	return ret;
556}
557
558static int ieee802154_list_iface(struct sk_buff *skb,
559	struct genl_info *info)
560{
561	/* Request for interface name, index, type, IEEE address,
562	   PAN Id, short address */
563	struct sk_buff *msg;
564	struct net_device *dev = NULL;
565	int rc = -ENOBUFS;
566
567	pr_debug("%s\n", __func__);
568
569	dev = ieee802154_nl_get_dev(info);
570	if (!dev)
571		return -ENODEV;
572
573	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
574	if (!msg)
575		goto out_dev;
576
577	rc = ieee802154_nl_fill_iface(msg, info->snd_pid, info->snd_seq,
578			0, dev);
579	if (rc < 0)
580		goto out_free;
581
582	dev_put(dev);
583
584	return genlmsg_unicast(&init_net, msg, info->snd_pid);
585out_free:
586	nlmsg_free(msg);
587out_dev:
588	dev_put(dev);
589	return rc;
590
591}
592
593static int ieee802154_dump_iface(struct sk_buff *skb,
594	struct netlink_callback *cb)
595{
596	struct net *net = sock_net(skb->sk);
597	struct net_device *dev;
598	int idx;
599	int s_idx = cb->args[0];
600
601	pr_debug("%s\n", __func__);
602
603	idx = 0;
604	for_each_netdev(net, dev) {
605		if (idx < s_idx || (dev->type != ARPHRD_IEEE802154))
606			goto cont;
607
608		if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).pid,
609			cb->nlh->nlmsg_seq, NLM_F_MULTI, dev) < 0)
610			break;
611cont:
612		idx++;
613	}
614	cb->args[0] = idx;
615
616	return skb->len;
617}
618
619#define IEEE802154_OP(_cmd, _func)			\
620	{						\
621		.cmd	= _cmd,				\
622		.policy	= ieee802154_policy,		\
623		.doit	= _func,			\
624		.dumpit	= NULL,				\
625		.flags	= GENL_ADMIN_PERM,		\
626	}
627
628#define IEEE802154_DUMP(_cmd, _func, _dump)		\
629	{						\
630		.cmd	= _cmd,				\
631		.policy	= ieee802154_policy,		\
632		.doit	= _func,			\
633		.dumpit	= _dump,			\
634	}
635
636static struct genl_ops ieee802154_coordinator_ops[] = {
637	IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
638	IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
639	IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
640	IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
641	IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
642	IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
643							ieee802154_dump_iface),
644};
645
646int __init ieee802154_nl_init(void)
647{
648	int rc;
649	int i;
650
651	rc = genl_register_family(&ieee802154_coordinator_family);
652	if (rc)
653		goto fail;
654
655	rc = genl_register_mc_group(&ieee802154_coordinator_family,
656			&ieee802154_coord_mcgrp);
657	if (rc)
658		goto fail;
659
660	rc = genl_register_mc_group(&ieee802154_coordinator_family,
661			&ieee802154_beacon_mcgrp);
662	if (rc)
663		goto fail;
664
665
666	for (i = 0; i < ARRAY_SIZE(ieee802154_coordinator_ops); i++) {
667		rc = genl_register_ops(&ieee802154_coordinator_family,
668				&ieee802154_coordinator_ops[i]);
669		if (rc)
670			goto fail;
671	}
672
673	return 0;
674
675fail:
676	genl_unregister_family(&ieee802154_coordinator_family);
677	return rc;
678}
679
680void __exit ieee802154_nl_exit(void)
681{
682	genl_unregister_family(&ieee802154_coordinator_family);
683}
684
685