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Diffstat (limited to 'net/ieee802154/netlink.c')
-rw-r--r--net/ieee802154/netlink.c523
1 files changed, 523 insertions, 0 deletions
diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
new file mode 100644
index 000000000000..105ad10876af
--- /dev/null
+++ b/net/ieee802154/netlink.c
@@ -0,0 +1,523 @@
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 */
23
24#include <linux/kernel.h>
25#include <linux/if_arp.h>
26#include <linux/netdevice.h>
27#include <net/netlink.h>
28#include <net/genetlink.h>
29#include <linux/nl802154.h>
30#include <net/ieee802154/af_ieee802154.h>
31#include <net/ieee802154/nl802154.h>
32#include <net/ieee802154/netdevice.h>
33
34static unsigned int ieee802154_seq_num;
35
36static struct genl_family ieee802154_coordinator_family = {
37 .id = GENL_ID_GENERATE,
38 .hdrsize = 0,
39 .name = IEEE802154_NL_NAME,
40 .version = 1,
41 .maxattr = IEEE802154_ATTR_MAX,
42};
43
44static struct genl_multicast_group ieee802154_coord_mcgrp = {
45 .name = IEEE802154_MCAST_COORD_NAME,
46};
47
48static struct genl_multicast_group ieee802154_beacon_mcgrp = {
49 .name = IEEE802154_MCAST_BEACON_NAME,
50};
51
52/* Requests to userspace */
53static struct sk_buff *ieee802154_nl_create(int flags, u8 req)
54{
55 void *hdr;
56 struct sk_buff *msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
57
58 if (!msg)
59 return NULL;
60
61 hdr = genlmsg_put(msg, 0, ieee802154_seq_num++,
62 &ieee802154_coordinator_family, flags, req);
63 if (!hdr) {
64 nlmsg_free(msg);
65 return NULL;
66 }
67
68 return msg;
69}
70
71static int ieee802154_nl_finish(struct sk_buff *msg)
72{
73 /* XXX: nlh is right at the start of msg */
74 void *hdr = genlmsg_data(NLMSG_DATA(msg->data));
75
76 if (!genlmsg_end(msg, hdr))
77 goto out;
78
79 return genlmsg_multicast(msg, 0, ieee802154_coord_mcgrp.id,
80 GFP_ATOMIC);
81out:
82 nlmsg_free(msg);
83 return -ENOBUFS;
84}
85
86int ieee802154_nl_assoc_indic(struct net_device *dev,
87 struct ieee802154_addr *addr, u8 cap)
88{
89 struct sk_buff *msg;
90
91 pr_debug("%s\n", __func__);
92
93 if (addr->addr_type != IEEE802154_ADDR_LONG) {
94 pr_err("%s: received non-long source address!\n", __func__);
95 return -EINVAL;
96 }
97
98 msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_INDIC);
99 if (!msg)
100 return -ENOBUFS;
101
102 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
103 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
104 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
105 dev->dev_addr);
106
107 NLA_PUT(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
108 addr->hwaddr);
109
110 NLA_PUT_U8(msg, IEEE802154_ATTR_CAPABILITY, cap);
111
112 return ieee802154_nl_finish(msg);
113
114nla_put_failure:
115 nlmsg_free(msg);
116 return -ENOBUFS;
117}
118EXPORT_SYMBOL(ieee802154_nl_assoc_indic);
119
120int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
121 u8 status)
122{
123 struct sk_buff *msg;
124
125 pr_debug("%s\n", __func__);
126
127 msg = ieee802154_nl_create(0, IEEE802154_ASSOCIATE_CONF);
128 if (!msg)
129 return -ENOBUFS;
130
131 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
132 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
133 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
134 dev->dev_addr);
135
136 NLA_PUT_U16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr);
137 NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
138
139 return ieee802154_nl_finish(msg);
140
141nla_put_failure:
142 nlmsg_free(msg);
143 return -ENOBUFS;
144}
145EXPORT_SYMBOL(ieee802154_nl_assoc_confirm);
146
147int ieee802154_nl_disassoc_indic(struct net_device *dev,
148 struct ieee802154_addr *addr, u8 reason)
149{
150 struct sk_buff *msg;
151
152 pr_debug("%s\n", __func__);
153
154 msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_INDIC);
155 if (!msg)
156 return -ENOBUFS;
157
158 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
159 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
160 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
161 dev->dev_addr);
162
163 if (addr->addr_type == IEEE802154_ADDR_LONG)
164 NLA_PUT(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
165 addr->hwaddr);
166 else
167 NLA_PUT_U16(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
168 addr->short_addr);
169
170 NLA_PUT_U8(msg, IEEE802154_ATTR_REASON, reason);
171
172 return ieee802154_nl_finish(msg);
173
174nla_put_failure:
175 nlmsg_free(msg);
176 return -ENOBUFS;
177}
178EXPORT_SYMBOL(ieee802154_nl_disassoc_indic);
179
180int ieee802154_nl_disassoc_confirm(struct net_device *dev, u8 status)
181{
182 struct sk_buff *msg;
183
184 pr_debug("%s\n", __func__);
185
186 msg = ieee802154_nl_create(0, IEEE802154_DISASSOCIATE_CONF);
187 if (!msg)
188 return -ENOBUFS;
189
190 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
191 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
192 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
193 dev->dev_addr);
194
195 NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
196
197 return ieee802154_nl_finish(msg);
198
199nla_put_failure:
200 nlmsg_free(msg);
201 return -ENOBUFS;
202}
203EXPORT_SYMBOL(ieee802154_nl_disassoc_confirm);
204
205int ieee802154_nl_beacon_indic(struct net_device *dev,
206 u16 panid, u16 coord_addr)
207{
208 struct sk_buff *msg;
209
210 pr_debug("%s\n", __func__);
211
212 msg = ieee802154_nl_create(0, IEEE802154_BEACON_NOTIFY_INDIC);
213 if (!msg)
214 return -ENOBUFS;
215
216 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
217 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
218 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
219 dev->dev_addr);
220 NLA_PUT_U16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR, coord_addr);
221 NLA_PUT_U16(msg, IEEE802154_ATTR_COORD_PAN_ID, panid);
222
223 return ieee802154_nl_finish(msg);
224
225nla_put_failure:
226 nlmsg_free(msg);
227 return -ENOBUFS;
228}
229EXPORT_SYMBOL(ieee802154_nl_beacon_indic);
230
231int ieee802154_nl_scan_confirm(struct net_device *dev,
232 u8 status, u8 scan_type, u32 unscanned,
233 u8 *edl/* , struct list_head *pan_desc_list */)
234{
235 struct sk_buff *msg;
236
237 pr_debug("%s\n", __func__);
238
239 msg = ieee802154_nl_create(0, IEEE802154_SCAN_CONF);
240 if (!msg)
241 return -ENOBUFS;
242
243 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
244 NLA_PUT_U32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex);
245 NLA_PUT(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
246 dev->dev_addr);
247
248 NLA_PUT_U8(msg, IEEE802154_ATTR_STATUS, status);
249 NLA_PUT_U8(msg, IEEE802154_ATTR_SCAN_TYPE, scan_type);
250 NLA_PUT_U32(msg, IEEE802154_ATTR_CHANNELS, unscanned);
251
252 if (edl)
253 NLA_PUT(msg, IEEE802154_ATTR_ED_LIST, 27, edl);
254
255 return ieee802154_nl_finish(msg);
256
257nla_put_failure:
258 nlmsg_free(msg);
259 return -ENOBUFS;
260}
261EXPORT_SYMBOL(ieee802154_nl_scan_confirm);
262
263/* Requests from userspace */
264static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
265{
266 struct net_device *dev;
267
268 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
269 char name[IFNAMSIZ + 1];
270 nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
271 sizeof(name));
272 dev = dev_get_by_name(&init_net, name);
273 } else if (info->attrs[IEEE802154_ATTR_DEV_INDEX])
274 dev = dev_get_by_index(&init_net,
275 nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
276 else
277 return NULL;
278
279 if (dev->type != ARPHRD_IEEE802154) {
280 dev_put(dev);
281 return NULL;
282 }
283
284 return dev;
285}
286
287static int ieee802154_associate_req(struct sk_buff *skb,
288 struct genl_info *info)
289{
290 struct net_device *dev;
291 struct ieee802154_addr addr;
292 int ret = -EINVAL;
293
294 if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
295 !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
296 (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
297 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
298 !info->attrs[IEEE802154_ATTR_CAPABILITY])
299 return -EINVAL;
300
301 dev = ieee802154_nl_get_dev(info);
302 if (!dev)
303 return -ENODEV;
304
305 if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
306 addr.addr_type = IEEE802154_ADDR_LONG;
307 nla_memcpy(addr.hwaddr,
308 info->attrs[IEEE802154_ATTR_COORD_HW_ADDR],
309 IEEE802154_ADDR_LEN);
310 } else {
311 addr.addr_type = IEEE802154_ADDR_SHORT;
312 addr.short_addr = nla_get_u16(
313 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
314 }
315 addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
316
317 ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
318 nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
319 nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
320
321 dev_put(dev);
322 return ret;
323}
324
325static int ieee802154_associate_resp(struct sk_buff *skb,
326 struct genl_info *info)
327{
328 struct net_device *dev;
329 struct ieee802154_addr addr;
330 int ret = -EINVAL;
331
332 if (!info->attrs[IEEE802154_ATTR_STATUS] ||
333 !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
334 !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
335 return -EINVAL;
336
337 dev = ieee802154_nl_get_dev(info);
338 if (!dev)
339 return -ENODEV;
340
341 addr.addr_type = IEEE802154_ADDR_LONG;
342 nla_memcpy(addr.hwaddr, info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
343 IEEE802154_ADDR_LEN);
344 addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
345
346
347 ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
348 nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
349 nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
350
351 dev_put(dev);
352 return ret;
353}
354
355static int ieee802154_disassociate_req(struct sk_buff *skb,
356 struct genl_info *info)
357{
358 struct net_device *dev;
359 struct ieee802154_addr addr;
360 int ret = -EINVAL;
361
362 if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
363 !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
364 !info->attrs[IEEE802154_ATTR_REASON])
365 return -EINVAL;
366
367 dev = ieee802154_nl_get_dev(info);
368 if (!dev)
369 return -ENODEV;
370
371 if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
372 addr.addr_type = IEEE802154_ADDR_LONG;
373 nla_memcpy(addr.hwaddr,
374 info->attrs[IEEE802154_ATTR_DEST_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_DEST_SHORT_ADDR]);
380 }
381 addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
382
383 ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
384 nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
385
386 dev_put(dev);
387 return ret;
388}
389
390/*
391 * PANid, channel, beacon_order = 15, superframe_order = 15,
392 * PAN_coordinator, battery_life_extension = 0,
393 * coord_realignment = 0, security_enable = 0
394*/
395static int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
396{
397 struct net_device *dev;
398 struct ieee802154_addr addr;
399
400 u8 channel, bcn_ord, sf_ord;
401 int pan_coord, blx, coord_realign;
402 int ret;
403
404 if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
405 !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
406 !info->attrs[IEEE802154_ATTR_CHANNEL] ||
407 !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
408 !info->attrs[IEEE802154_ATTR_SF_ORD] ||
409 !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
410 !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
411 !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
412 )
413 return -EINVAL;
414
415 dev = ieee802154_nl_get_dev(info);
416 if (!dev)
417 return -ENODEV;
418
419 addr.addr_type = IEEE802154_ADDR_SHORT;
420 addr.short_addr = nla_get_u16(
421 info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
422 addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
423
424 channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
425 bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
426 sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
427 pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
428 blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
429 coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
430
431 ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel,
432 bcn_ord, sf_ord, pan_coord, blx, coord_realign);
433
434 dev_put(dev);
435 return ret;
436}
437
438static int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
439{
440 struct net_device *dev;
441 int ret;
442 u8 type;
443 u32 channels;
444 u8 duration;
445
446 if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
447 !info->attrs[IEEE802154_ATTR_CHANNELS] ||
448 !info->attrs[IEEE802154_ATTR_DURATION])
449 return -EINVAL;
450
451 dev = ieee802154_nl_get_dev(info);
452 if (!dev)
453 return -ENODEV;
454
455 type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
456 channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
457 duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
458
459 ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
460 duration);
461
462 dev_put(dev);
463 return ret;
464}
465
466#define IEEE802154_OP(_cmd, _func) \
467 { \
468 .cmd = _cmd, \
469 .policy = ieee802154_policy, \
470 .doit = _func, \
471 .dumpit = NULL, \
472 .flags = GENL_ADMIN_PERM, \
473 }
474
475static struct genl_ops ieee802154_coordinator_ops[] = {
476 IEEE802154_OP(IEEE802154_ASSOCIATE_REQ, ieee802154_associate_req),
477 IEEE802154_OP(IEEE802154_ASSOCIATE_RESP, ieee802154_associate_resp),
478 IEEE802154_OP(IEEE802154_DISASSOCIATE_REQ, ieee802154_disassociate_req),
479 IEEE802154_OP(IEEE802154_SCAN_REQ, ieee802154_scan_req),
480 IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
481};
482
483static int __init ieee802154_nl_init(void)
484{
485 int rc;
486 int i;
487
488 rc = genl_register_family(&ieee802154_coordinator_family);
489 if (rc)
490 goto fail;
491
492 rc = genl_register_mc_group(&ieee802154_coordinator_family,
493 &ieee802154_coord_mcgrp);
494 if (rc)
495 goto fail;
496
497 rc = genl_register_mc_group(&ieee802154_coordinator_family,
498 &ieee802154_beacon_mcgrp);
499 if (rc)
500 goto fail;
501
502
503 for (i = 0; i < ARRAY_SIZE(ieee802154_coordinator_ops); i++) {
504 rc = genl_register_ops(&ieee802154_coordinator_family,
505 &ieee802154_coordinator_ops[i]);
506 if (rc)
507 goto fail;
508 }
509
510 return 0;
511
512fail:
513 genl_unregister_family(&ieee802154_coordinator_family);
514 return rc;
515}
516module_init(ieee802154_nl_init);
517
518static void __exit ieee802154_nl_exit(void)
519{
520 genl_unregister_family(&ieee802154_coordinator_family);
521}
522module_exit(ieee802154_nl_exit);
523
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-25 19:43:27 -0500