xref: /openbmc/linux/net/ieee802154/nl-mac.c (revision 132db935) 
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Netlink interface for IEEE 802.15.4 stack
4  *
5  * Copyright 2007, 2008 Siemens AG
6  *
7  * Written by:
8  * Sergey Lapin <slapin@ossfans.org>
9  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
10  * Maxim Osipov <maxim.osipov@siemens.com>
11  */
12 
13 #include <linux/gfp.h>
14 #include <linux/kernel.h>
15 #include <linux/if_arp.h>
16 #include <linux/netdevice.h>
17 #include <linux/ieee802154.h>
18 #include <net/netlink.h>
19 #include <net/genetlink.h>
20 #include <net/sock.h>
21 #include <linux/nl802154.h>
22 #include <linux/export.h>
23 #include <net/af_ieee802154.h>
24 #include <net/ieee802154_netdev.h>
25 #include <net/cfg802154.h>
26 
27 #include "ieee802154.h"
28 
29 static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr,
30 			  int padattr)
31 {
32 	return nla_put_u64_64bit(msg, type, swab64((__force u64)hwaddr),
33 				 padattr);
34 }
35 
36 static __le64 nla_get_hwaddr(const struct nlattr *nla)
37 {
38 	return ieee802154_devaddr_from_raw(nla_data(nla));
39 }
40 
41 static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
42 {
43 	return nla_put_u16(msg, type, le16_to_cpu(addr));
44 }
45 
46 static __le16 nla_get_shortaddr(const struct nlattr *nla)
47 {
48 	return cpu_to_le16(nla_get_u16(nla));
49 }
50 
51 static int ieee802154_nl_start_confirm(struct net_device *dev, u8 status)
52 {
53 	struct sk_buff *msg;
54 
55 	pr_debug("%s\n", __func__);
56 
57 	msg = ieee802154_nl_create(0, IEEE802154_START_CONF);
58 	if (!msg)
59 		return -ENOBUFS;
60 
61 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
62 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
63 	    nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
64 		    dev->dev_addr) ||
65 	    nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
66 		goto nla_put_failure;
67 	return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
68 
69 nla_put_failure:
70 	nlmsg_free(msg);
71 	return -ENOBUFS;
72 }
73 
74 static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
75 				    u32 seq, int flags, struct net_device *dev)
76 {
77 	void *hdr;
78 	struct wpan_phy *phy;
79 	struct ieee802154_mlme_ops *ops;
80 	__le16 short_addr, pan_id;
81 
82 	pr_debug("%s\n", __func__);
83 
84 	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
85 			  IEEE802154_LIST_IFACE);
86 	if (!hdr)
87 		goto out;
88 
89 	ops = ieee802154_mlme_ops(dev);
90 	phy = dev->ieee802154_ptr->wpan_phy;
91 	BUG_ON(!phy);
92 	get_device(&phy->dev);
93 
94 	rtnl_lock();
95 	short_addr = dev->ieee802154_ptr->short_addr;
96 	pan_id = dev->ieee802154_ptr->pan_id;
97 	rtnl_unlock();
98 
99 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
100 	    nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
101 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
102 	    nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
103 		    dev->dev_addr) ||
104 	    nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
105 	    nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
106 		goto nla_put_failure;
107 
108 	if (ops->get_mac_params) {
109 		struct ieee802154_mac_params params;
110 
111 		rtnl_lock();
112 		ops->get_mac_params(dev, &params);
113 		rtnl_unlock();
114 
115 		if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
116 			       params.transmit_power / 100) ||
117 		    nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
118 		    nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
119 			       params.cca.mode) ||
120 		    nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
121 				params.cca_ed_level / 100) ||
122 		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
123 			       params.csma_retries) ||
124 		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
125 			       params.min_be) ||
126 		    nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
127 			       params.max_be) ||
128 		    nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
129 			       params.frame_retries))
130 			goto nla_put_failure;
131 	}
132 
133 	wpan_phy_put(phy);
134 	genlmsg_end(msg, hdr);
135 	return 0;
136 
137 nla_put_failure:
138 	wpan_phy_put(phy);
139 	genlmsg_cancel(msg, hdr);
140 out:
141 	return -EMSGSIZE;
142 }
143 
144 /* Requests from userspace */
145 static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
146 {
147 	struct net_device *dev;
148 
149 	if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
150 		char name[IFNAMSIZ + 1];
151 
152 		nla_strlcpy(name, info->attrs[IEEE802154_ATTR_DEV_NAME],
153 			    sizeof(name));
154 		dev = dev_get_by_name(&init_net, name);
155 	} else if (info->attrs[IEEE802154_ATTR_DEV_INDEX]) {
156 		dev = dev_get_by_index(&init_net,
157 			nla_get_u32(info->attrs[IEEE802154_ATTR_DEV_INDEX]));
158 	} else {
159 		return NULL;
160 	}
161 
162 	if (!dev)
163 		return NULL;
164 
165 	if (dev->type != ARPHRD_IEEE802154) {
166 		dev_put(dev);
167 		return NULL;
168 	}
169 
170 	return dev;
171 }
172 
173 int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
174 {
175 	struct net_device *dev;
176 	struct ieee802154_addr addr;
177 	u8 page;
178 	int ret = -EOPNOTSUPP;
179 
180 	if (!info->attrs[IEEE802154_ATTR_CHANNEL] ||
181 	    !info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
182 	    (!info->attrs[IEEE802154_ATTR_COORD_HW_ADDR] &&
183 		!info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]) ||
184 	    !info->attrs[IEEE802154_ATTR_CAPABILITY])
185 		return -EINVAL;
186 
187 	dev = ieee802154_nl_get_dev(info);
188 	if (!dev)
189 		return -ENODEV;
190 	if (!ieee802154_mlme_ops(dev)->assoc_req)
191 		goto out;
192 
193 	if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
194 		addr.mode = IEEE802154_ADDR_LONG;
195 		addr.extended_addr = nla_get_hwaddr(
196 				info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
197 	} else {
198 		addr.mode = IEEE802154_ADDR_SHORT;
199 		addr.short_addr = nla_get_shortaddr(
200 				info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
201 	}
202 	addr.pan_id = nla_get_shortaddr(
203 			info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
204 
205 	if (info->attrs[IEEE802154_ATTR_PAGE])
206 		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
207 	else
208 		page = 0;
209 
210 	ret = ieee802154_mlme_ops(dev)->assoc_req(dev, &addr,
211 			nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]),
212 			page,
213 			nla_get_u8(info->attrs[IEEE802154_ATTR_CAPABILITY]));
214 
215 out:
216 	dev_put(dev);
217 	return ret;
218 }
219 
220 int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
221 {
222 	struct net_device *dev;
223 	struct ieee802154_addr addr;
224 	int ret = -EOPNOTSUPP;
225 
226 	if (!info->attrs[IEEE802154_ATTR_STATUS] ||
227 	    !info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] ||
228 	    !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])
229 		return -EINVAL;
230 
231 	dev = ieee802154_nl_get_dev(info);
232 	if (!dev)
233 		return -ENODEV;
234 	if (!ieee802154_mlme_ops(dev)->assoc_resp)
235 		goto out;
236 
237 	addr.mode = IEEE802154_ADDR_LONG;
238 	addr.extended_addr = nla_get_hwaddr(
239 			info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
240 	rtnl_lock();
241 	addr.pan_id = dev->ieee802154_ptr->pan_id;
242 	rtnl_unlock();
243 
244 	ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
245 		nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
246 		nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
247 
248 out:
249 	dev_put(dev);
250 	return ret;
251 }
252 
253 int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
254 {
255 	struct net_device *dev;
256 	struct ieee802154_addr addr;
257 	int ret = -EOPNOTSUPP;
258 
259 	if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
260 	    !info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]) ||
261 	    !info->attrs[IEEE802154_ATTR_REASON])
262 		return -EINVAL;
263 
264 	dev = ieee802154_nl_get_dev(info);
265 	if (!dev)
266 		return -ENODEV;
267 	if (!ieee802154_mlme_ops(dev)->disassoc_req)
268 		goto out;
269 
270 	if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
271 		addr.mode = IEEE802154_ADDR_LONG;
272 		addr.extended_addr = nla_get_hwaddr(
273 				info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
274 	} else {
275 		addr.mode = IEEE802154_ADDR_SHORT;
276 		addr.short_addr = nla_get_shortaddr(
277 				info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
278 	}
279 	rtnl_lock();
280 	addr.pan_id = dev->ieee802154_ptr->pan_id;
281 	rtnl_unlock();
282 
283 	ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
284 			nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
285 
286 out:
287 	dev_put(dev);
288 	return ret;
289 }
290 
291 /* PANid, channel, beacon_order = 15, superframe_order = 15,
292  * PAN_coordinator, battery_life_extension = 0,
293  * coord_realignment = 0, security_enable = 0
294 */
295 int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
296 {
297 	struct net_device *dev;
298 	struct ieee802154_addr addr;
299 
300 	u8 channel, bcn_ord, sf_ord;
301 	u8 page;
302 	int pan_coord, blx, coord_realign;
303 	int ret = -EBUSY;
304 
305 	if (!info->attrs[IEEE802154_ATTR_COORD_PAN_ID] ||
306 	    !info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR] ||
307 	    !info->attrs[IEEE802154_ATTR_CHANNEL] ||
308 	    !info->attrs[IEEE802154_ATTR_BCN_ORD] ||
309 	    !info->attrs[IEEE802154_ATTR_SF_ORD] ||
310 	    !info->attrs[IEEE802154_ATTR_PAN_COORD] ||
311 	    !info->attrs[IEEE802154_ATTR_BAT_EXT] ||
312 	    !info->attrs[IEEE802154_ATTR_COORD_REALIGN]
313 	 )
314 		return -EINVAL;
315 
316 	dev = ieee802154_nl_get_dev(info);
317 	if (!dev)
318 		return -ENODEV;
319 
320 	if (netif_running(dev))
321 		goto out;
322 
323 	if (!ieee802154_mlme_ops(dev)->start_req) {
324 		ret = -EOPNOTSUPP;
325 		goto out;
326 	}
327 
328 	addr.mode = IEEE802154_ADDR_SHORT;
329 	addr.short_addr = nla_get_shortaddr(
330 			info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
331 	addr.pan_id = nla_get_shortaddr(
332 			info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
333 
334 	channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
335 	bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
336 	sf_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_SF_ORD]);
337 	pan_coord = nla_get_u8(info->attrs[IEEE802154_ATTR_PAN_COORD]);
338 	blx = nla_get_u8(info->attrs[IEEE802154_ATTR_BAT_EXT]);
339 	coord_realign = nla_get_u8(info->attrs[IEEE802154_ATTR_COORD_REALIGN]);
340 
341 	if (info->attrs[IEEE802154_ATTR_PAGE])
342 		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
343 	else
344 		page = 0;
345 
346 	if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
347 		ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
348 		dev_put(dev);
349 		return -EINVAL;
350 	}
351 
352 	rtnl_lock();
353 	ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
354 		bcn_ord, sf_ord, pan_coord, blx, coord_realign);
355 	rtnl_unlock();
356 
357 	/* FIXME: add validation for unused parameters to be sane
358 	 * for SoftMAC
359 	 */
360 	ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS);
361 
362 out:
363 	dev_put(dev);
364 	return ret;
365 }
366 
367 int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info)
368 {
369 	struct net_device *dev;
370 	int ret = -EOPNOTSUPP;
371 	u8 type;
372 	u32 channels;
373 	u8 duration;
374 	u8 page;
375 
376 	if (!info->attrs[IEEE802154_ATTR_SCAN_TYPE] ||
377 	    !info->attrs[IEEE802154_ATTR_CHANNELS] ||
378 	    !info->attrs[IEEE802154_ATTR_DURATION])
379 		return -EINVAL;
380 
381 	dev = ieee802154_nl_get_dev(info);
382 	if (!dev)
383 		return -ENODEV;
384 	if (!ieee802154_mlme_ops(dev)->scan_req)
385 		goto out;
386 
387 	type = nla_get_u8(info->attrs[IEEE802154_ATTR_SCAN_TYPE]);
388 	channels = nla_get_u32(info->attrs[IEEE802154_ATTR_CHANNELS]);
389 	duration = nla_get_u8(info->attrs[IEEE802154_ATTR_DURATION]);
390 
391 	if (info->attrs[IEEE802154_ATTR_PAGE])
392 		page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
393 	else
394 		page = 0;
395 
396 	ret = ieee802154_mlme_ops(dev)->scan_req(dev, type, channels,
397 						 page, duration);
398 
399 out:
400 	dev_put(dev);
401 	return ret;
402 }
403 
404 int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info)
405 {
406 	/* Request for interface name, index, type, IEEE address,
407 	 * PAN Id, short address
408 	 */
409 	struct sk_buff *msg;
410 	struct net_device *dev = NULL;
411 	int rc = -ENOBUFS;
412 
413 	pr_debug("%s\n", __func__);
414 
415 	dev = ieee802154_nl_get_dev(info);
416 	if (!dev)
417 		return -ENODEV;
418 
419 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
420 	if (!msg)
421 		goto out_dev;
422 
423 	rc = ieee802154_nl_fill_iface(msg, info->snd_portid, info->snd_seq,
424 				      0, dev);
425 	if (rc < 0)
426 		goto out_free;
427 
428 	dev_put(dev);
429 
430 	return genlmsg_reply(msg, info);
431 out_free:
432 	nlmsg_free(msg);
433 out_dev:
434 	dev_put(dev);
435 	return rc;
436 }
437 
438 int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
439 {
440 	struct net *net = sock_net(skb->sk);
441 	struct net_device *dev;
442 	int idx;
443 	int s_idx = cb->args[0];
444 
445 	pr_debug("%s\n", __func__);
446 
447 	idx = 0;
448 	for_each_netdev(net, dev) {
449 		if (idx < s_idx || dev->type != ARPHRD_IEEE802154)
450 			goto cont;
451 
452 		if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
453 					     cb->nlh->nlmsg_seq,
454 					     NLM_F_MULTI, dev) < 0)
455 			break;
456 cont:
457 		idx++;
458 	}
459 	cb->args[0] = idx;
460 
461 	return skb->len;
462 }
463 
464 int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
465 {
466 	struct net_device *dev = NULL;
467 	struct ieee802154_mlme_ops *ops;
468 	struct ieee802154_mac_params params;
469 	struct wpan_phy *phy;
470 	int rc = -EINVAL;
471 
472 	pr_debug("%s\n", __func__);
473 
474 	dev = ieee802154_nl_get_dev(info);
475 	if (!dev)
476 		return -ENODEV;
477 
478 	ops = ieee802154_mlme_ops(dev);
479 
480 	if (!ops->get_mac_params || !ops->set_mac_params) {
481 		rc = -EOPNOTSUPP;
482 		goto out;
483 	}
484 
485 	if (netif_running(dev)) {
486 		rc = -EBUSY;
487 		goto out;
488 	}
489 
490 	if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
491 	    !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
492 	    !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
493 	    !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
494 	    !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
495 	    !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
496 	    !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
497 		goto out;
498 
499 	phy = dev->ieee802154_ptr->wpan_phy;
500 	get_device(&phy->dev);
501 
502 	rtnl_lock();
503 	ops->get_mac_params(dev, &params);
504 
505 	if (info->attrs[IEEE802154_ATTR_TXPOWER])
506 		params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]) * 100;
507 
508 	if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
509 		params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
510 
511 	if (info->attrs[IEEE802154_ATTR_CCA_MODE])
512 		params.cca.mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
513 
514 	if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
515 		params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) * 100;
516 
517 	if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
518 		params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
519 
520 	if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
521 		params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
522 
523 	if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
524 		params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
525 
526 	if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
527 		params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
528 
529 	rc = ops->set_mac_params(dev, &params);
530 	rtnl_unlock();
531 
532 	wpan_phy_put(phy);
533 	dev_put(dev);
534 
535 	return 0;
536 
537 out:
538 	dev_put(dev);
539 	return rc;
540 }
541 
542 static int
543 ieee802154_llsec_parse_key_id(struct genl_info *info,
544 			      struct ieee802154_llsec_key_id *desc)
545 {
546 	memset(desc, 0, sizeof(*desc));
547 
548 	if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE])
549 		return -EINVAL;
550 
551 	desc->mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]);
552 
553 	if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
554 		if (!info->attrs[IEEE802154_ATTR_PAN_ID] &&
555 		    !(info->attrs[IEEE802154_ATTR_SHORT_ADDR] ||
556 		      info->attrs[IEEE802154_ATTR_HW_ADDR]))
557 			return -EINVAL;
558 
559 		desc->device_addr.pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
560 
561 		if (info->attrs[IEEE802154_ATTR_SHORT_ADDR]) {
562 			desc->device_addr.mode = IEEE802154_ADDR_SHORT;
563 			desc->device_addr.short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
564 		} else {
565 			desc->device_addr.mode = IEEE802154_ADDR_LONG;
566 			desc->device_addr.extended_addr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
567 		}
568 	}
569 
570 	if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
571 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID])
572 		return -EINVAL;
573 
574 	if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
575 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT])
576 		return -EINVAL;
577 
578 	if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
579 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED])
580 		return -EINVAL;
581 
582 	if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT)
583 		desc->id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_ID]);
584 
585 	switch (desc->mode) {
586 	case IEEE802154_SCF_KEY_SHORT_INDEX:
587 	{
588 		u32 source = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT]);
589 
590 		desc->short_source = cpu_to_le32(source);
591 		break;
592 	}
593 	case IEEE802154_SCF_KEY_HW_INDEX:
594 		desc->extended_source = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED]);
595 		break;
596 	}
597 
598 	return 0;
599 }
600 
601 static int
602 ieee802154_llsec_fill_key_id(struct sk_buff *msg,
603 			     const struct ieee802154_llsec_key_id *desc)
604 {
605 	if (nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_MODE, desc->mode))
606 		return -EMSGSIZE;
607 
608 	if (desc->mode == IEEE802154_SCF_KEY_IMPLICIT) {
609 		if (nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID,
610 				      desc->device_addr.pan_id))
611 			return -EMSGSIZE;
612 
613 		if (desc->device_addr.mode == IEEE802154_ADDR_SHORT &&
614 		    nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
615 				      desc->device_addr.short_addr))
616 			return -EMSGSIZE;
617 
618 		if (desc->device_addr.mode == IEEE802154_ADDR_LONG &&
619 		    nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR,
620 				   desc->device_addr.extended_addr,
621 				   IEEE802154_ATTR_PAD))
622 			return -EMSGSIZE;
623 	}
624 
625 	if (desc->mode != IEEE802154_SCF_KEY_IMPLICIT &&
626 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_ID, desc->id))
627 		return -EMSGSIZE;
628 
629 	if (desc->mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
630 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_SHORT,
631 			le32_to_cpu(desc->short_source)))
632 		return -EMSGSIZE;
633 
634 	if (desc->mode == IEEE802154_SCF_KEY_HW_INDEX &&
635 	    nla_put_hwaddr(msg, IEEE802154_ATTR_LLSEC_KEY_SOURCE_EXTENDED,
636 			   desc->extended_source, IEEE802154_ATTR_PAD))
637 		return -EMSGSIZE;
638 
639 	return 0;
640 }
641 
642 int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info)
643 {
644 	struct sk_buff *msg;
645 	struct net_device *dev = NULL;
646 	int rc = -ENOBUFS;
647 	struct ieee802154_mlme_ops *ops;
648 	void *hdr;
649 	struct ieee802154_llsec_params params;
650 
651 	pr_debug("%s\n", __func__);
652 
653 	dev = ieee802154_nl_get_dev(info);
654 	if (!dev)
655 		return -ENODEV;
656 
657 	ops = ieee802154_mlme_ops(dev);
658 	if (!ops->llsec) {
659 		rc = -EOPNOTSUPP;
660 		goto out_dev;
661 	}
662 
663 	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
664 	if (!msg)
665 		goto out_dev;
666 
667 	hdr = genlmsg_put(msg, 0, info->snd_seq, &nl802154_family, 0,
668 			  IEEE802154_LLSEC_GETPARAMS);
669 	if (!hdr)
670 		goto out_free;
671 
672 	rc = ops->llsec->get_params(dev, &params);
673 	if (rc < 0)
674 		goto out_free;
675 
676 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
677 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
678 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_ENABLED, params.enabled) ||
679 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) ||
680 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
681 			be32_to_cpu(params.frame_counter)) ||
682 	    ieee802154_llsec_fill_key_id(msg, &params.out_key))
683 		goto out_free;
684 
685 	dev_put(dev);
686 
687 	return ieee802154_nl_reply(msg, info);
688 out_free:
689 	nlmsg_free(msg);
690 out_dev:
691 	dev_put(dev);
692 	return rc;
693 }
694 
695 int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info)
696 {
697 	struct net_device *dev = NULL;
698 	int rc = -EINVAL;
699 	struct ieee802154_mlme_ops *ops;
700 	struct ieee802154_llsec_params params;
701 	int changed = 0;
702 
703 	pr_debug("%s\n", __func__);
704 
705 	dev = ieee802154_nl_get_dev(info);
706 	if (!dev)
707 		return -ENODEV;
708 
709 	if (!info->attrs[IEEE802154_ATTR_LLSEC_ENABLED] &&
710 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE] &&
711 	    !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL])
712 		goto out;
713 
714 	ops = ieee802154_mlme_ops(dev);
715 	if (!ops->llsec) {
716 		rc = -EOPNOTSUPP;
717 		goto out;
718 	}
719 
720 	if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL] &&
721 	    nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) > 7)
722 		goto out;
723 
724 	if (info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]) {
725 		params.enabled = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_ENABLED]);
726 		changed |= IEEE802154_LLSEC_PARAM_ENABLED;
727 	}
728 
729 	if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_MODE]) {
730 		if (ieee802154_llsec_parse_key_id(info, &params.out_key))
731 			goto out;
732 
733 		changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
734 	}
735 
736 	if (info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]) {
737 		params.out_level = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVEL]);
738 		changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
739 	}
740 
741 	if (info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]) {
742 		u32 fc = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
743 
744 		params.frame_counter = cpu_to_be32(fc);
745 		changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
746 	}
747 
748 	rc = ops->llsec->set_params(dev, &params, changed);
749 
750 	dev_put(dev);
751 
752 	return rc;
753 out:
754 	dev_put(dev);
755 	return rc;
756 }
757 
758 struct llsec_dump_data {
759 	struct sk_buff *skb;
760 	int s_idx, s_idx2;
761 	int portid;
762 	int nlmsg_seq;
763 	struct net_device *dev;
764 	struct ieee802154_mlme_ops *ops;
765 	struct ieee802154_llsec_table *table;
766 };
767 
768 static int
769 ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb,
770 			    int (*step)(struct llsec_dump_data *))
771 {
772 	struct net *net = sock_net(skb->sk);
773 	struct net_device *dev;
774 	struct llsec_dump_data data;
775 	int idx = 0;
776 	int first_dev = cb->args[0];
777 	int rc;
778 
779 	for_each_netdev(net, dev) {
780 		if (idx < first_dev || dev->type != ARPHRD_IEEE802154)
781 			goto skip;
782 
783 		data.ops = ieee802154_mlme_ops(dev);
784 		if (!data.ops->llsec)
785 			goto skip;
786 
787 		data.skb = skb;
788 		data.s_idx = cb->args[1];
789 		data.s_idx2 = cb->args[2];
790 		data.dev = dev;
791 		data.portid = NETLINK_CB(cb->skb).portid;
792 		data.nlmsg_seq = cb->nlh->nlmsg_seq;
793 
794 		data.ops->llsec->lock_table(dev);
795 		data.ops->llsec->get_table(data.dev, &data.table);
796 		rc = step(&data);
797 		data.ops->llsec->unlock_table(dev);
798 
799 		if (rc < 0)
800 			break;
801 
802 skip:
803 		idx++;
804 	}
805 	cb->args[0] = idx;
806 
807 	return skb->len;
808 }
809 
810 static int
811 ieee802154_nl_llsec_change(struct sk_buff *skb, struct genl_info *info,
812 			   int (*fn)(struct net_device*, struct genl_info*))
813 {
814 	struct net_device *dev = NULL;
815 	int rc = -EINVAL;
816 
817 	dev = ieee802154_nl_get_dev(info);
818 	if (!dev)
819 		return -ENODEV;
820 
821 	if (!ieee802154_mlme_ops(dev)->llsec)
822 		rc = -EOPNOTSUPP;
823 	else
824 		rc = fn(dev, info);
825 
826 	dev_put(dev);
827 	return rc;
828 }
829 
830 static int
831 ieee802154_llsec_parse_key(struct genl_info *info,
832 			   struct ieee802154_llsec_key *key)
833 {
834 	u8 frames;
835 	u32 commands[256 / 32];
836 
837 	memset(key, 0, sizeof(*key));
838 
839 	if (!info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES] ||
840 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES])
841 		return -EINVAL;
842 
843 	frames = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES]);
844 	if ((frames & BIT(IEEE802154_FC_TYPE_MAC_CMD)) &&
845 	    !info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS])
846 		return -EINVAL;
847 
848 	if (info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS]) {
849 		nla_memcpy(commands,
850 			   info->attrs[IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS],
851 			   256 / 8);
852 
853 		if (commands[0] || commands[1] || commands[2] || commands[3] ||
854 		    commands[4] || commands[5] || commands[6] ||
855 		    commands[7] >= BIT(IEEE802154_CMD_GTS_REQ + 1))
856 			return -EINVAL;
857 
858 		key->cmd_frame_ids = commands[7];
859 	}
860 
861 	key->frame_types = frames;
862 
863 	nla_memcpy(key->key, info->attrs[IEEE802154_ATTR_LLSEC_KEY_BYTES],
864 		   IEEE802154_LLSEC_KEY_SIZE);
865 
866 	return 0;
867 }
868 
869 static int llsec_add_key(struct net_device *dev, struct genl_info *info)
870 {
871 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
872 	struct ieee802154_llsec_key key;
873 	struct ieee802154_llsec_key_id id;
874 
875 	if (ieee802154_llsec_parse_key(info, &key) ||
876 	    ieee802154_llsec_parse_key_id(info, &id))
877 		return -EINVAL;
878 
879 	return ops->llsec->add_key(dev, &id, &key);
880 }
881 
882 int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info)
883 {
884 	if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
885 	    (NLM_F_CREATE | NLM_F_EXCL))
886 		return -EINVAL;
887 
888 	return ieee802154_nl_llsec_change(skb, info, llsec_add_key);
889 }
890 
891 static int llsec_remove_key(struct net_device *dev, struct genl_info *info)
892 {
893 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
894 	struct ieee802154_llsec_key_id id;
895 
896 	if (ieee802154_llsec_parse_key_id(info, &id))
897 		return -EINVAL;
898 
899 	return ops->llsec->del_key(dev, &id);
900 }
901 
902 int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info)
903 {
904 	return ieee802154_nl_llsec_change(skb, info, llsec_remove_key);
905 }
906 
907 static int
908 ieee802154_nl_fill_key(struct sk_buff *msg, u32 portid, u32 seq,
909 		       const struct ieee802154_llsec_key_entry *key,
910 		       const struct net_device *dev)
911 {
912 	void *hdr;
913 	u32 commands[256 / 32];
914 
915 	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
916 			  IEEE802154_LLSEC_LIST_KEY);
917 	if (!hdr)
918 		goto out;
919 
920 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
921 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
922 	    ieee802154_llsec_fill_key_id(msg, &key->id) ||
923 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_FRAME_TYPES,
924 		       key->key->frame_types))
925 		goto nla_put_failure;
926 
927 	if (key->key->frame_types & BIT(IEEE802154_FC_TYPE_MAC_CMD)) {
928 		memset(commands, 0, sizeof(commands));
929 		commands[7] = key->key->cmd_frame_ids;
930 		if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_USAGE_COMMANDS,
931 			    sizeof(commands), commands))
932 			goto nla_put_failure;
933 	}
934 
935 	if (nla_put(msg, IEEE802154_ATTR_LLSEC_KEY_BYTES,
936 		    IEEE802154_LLSEC_KEY_SIZE, key->key->key))
937 		goto nla_put_failure;
938 
939 	genlmsg_end(msg, hdr);
940 	return 0;
941 
942 nla_put_failure:
943 	genlmsg_cancel(msg, hdr);
944 out:
945 	return -EMSGSIZE;
946 }
947 
948 static int llsec_iter_keys(struct llsec_dump_data *data)
949 {
950 	struct ieee802154_llsec_key_entry *pos;
951 	int rc = 0, idx = 0;
952 
953 	list_for_each_entry(pos, &data->table->keys, list) {
954 		if (idx++ < data->s_idx)
955 			continue;
956 
957 		if (ieee802154_nl_fill_key(data->skb, data->portid,
958 					   data->nlmsg_seq, pos, data->dev)) {
959 			rc = -EMSGSIZE;
960 			break;
961 		}
962 
963 		data->s_idx++;
964 	}
965 
966 	return rc;
967 }
968 
969 int ieee802154_llsec_dump_keys(struct sk_buff *skb, struct netlink_callback *cb)
970 {
971 	return ieee802154_llsec_dump_table(skb, cb, llsec_iter_keys);
972 }
973 
974 static int
975 llsec_parse_dev(struct genl_info *info,
976 		struct ieee802154_llsec_device *dev)
977 {
978 	memset(dev, 0, sizeof(*dev));
979 
980 	if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
981 	    !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
982 	    !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE] ||
983 	    !info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE] ||
984 	    (!!info->attrs[IEEE802154_ATTR_PAN_ID] !=
985 	     !!info->attrs[IEEE802154_ATTR_SHORT_ADDR]))
986 		return -EINVAL;
987 
988 	if (info->attrs[IEEE802154_ATTR_PAN_ID]) {
989 		dev->pan_id = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_PAN_ID]);
990 		dev->short_addr = nla_get_shortaddr(info->attrs[IEEE802154_ATTR_SHORT_ADDR]);
991 	} else {
992 		dev->short_addr = cpu_to_le16(IEEE802154_ADDR_UNDEF);
993 	}
994 
995 	dev->hwaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
996 	dev->frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
997 	dev->seclevel_exempt = !!nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
998 	dev->key_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_KEY_MODE]);
999 
1000 	if (dev->key_mode >= __IEEE802154_LLSEC_DEVKEY_MAX)
1001 		return -EINVAL;
1002 
1003 	return 0;
1004 }
1005 
1006 static int llsec_add_dev(struct net_device *dev, struct genl_info *info)
1007 {
1008 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1009 	struct ieee802154_llsec_device desc;
1010 
1011 	if (llsec_parse_dev(info, &desc))
1012 		return -EINVAL;
1013 
1014 	return ops->llsec->add_dev(dev, &desc);
1015 }
1016 
1017 int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info)
1018 {
1019 	if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1020 	    (NLM_F_CREATE | NLM_F_EXCL))
1021 		return -EINVAL;
1022 
1023 	return ieee802154_nl_llsec_change(skb, info, llsec_add_dev);
1024 }
1025 
1026 static int llsec_del_dev(struct net_device *dev, struct genl_info *info)
1027 {
1028 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1029 	__le64 devaddr;
1030 
1031 	if (!info->attrs[IEEE802154_ATTR_HW_ADDR])
1032 		return -EINVAL;
1033 
1034 	devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1035 
1036 	return ops->llsec->del_dev(dev, devaddr);
1037 }
1038 
1039 int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info)
1040 {
1041 	return ieee802154_nl_llsec_change(skb, info, llsec_del_dev);
1042 }
1043 
1044 static int
1045 ieee802154_nl_fill_dev(struct sk_buff *msg, u32 portid, u32 seq,
1046 		       const struct ieee802154_llsec_device *desc,
1047 		       const struct net_device *dev)
1048 {
1049 	void *hdr;
1050 
1051 	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1052 			  IEEE802154_LLSEC_LIST_DEV);
1053 	if (!hdr)
1054 		goto out;
1055 
1056 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1057 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1058 	    nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, desc->pan_id) ||
1059 	    nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR,
1060 			      desc->short_addr) ||
1061 	    nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, desc->hwaddr,
1062 			   IEEE802154_ATTR_PAD) ||
1063 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1064 			desc->frame_counter) ||
1065 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1066 		       desc->seclevel_exempt) ||
1067 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_KEY_MODE, desc->key_mode))
1068 		goto nla_put_failure;
1069 
1070 	genlmsg_end(msg, hdr);
1071 	return 0;
1072 
1073 nla_put_failure:
1074 	genlmsg_cancel(msg, hdr);
1075 out:
1076 	return -EMSGSIZE;
1077 }
1078 
1079 static int llsec_iter_devs(struct llsec_dump_data *data)
1080 {
1081 	struct ieee802154_llsec_device *pos;
1082 	int rc = 0, idx = 0;
1083 
1084 	list_for_each_entry(pos, &data->table->devices, list) {
1085 		if (idx++ < data->s_idx)
1086 			continue;
1087 
1088 		if (ieee802154_nl_fill_dev(data->skb, data->portid,
1089 					   data->nlmsg_seq, pos, data->dev)) {
1090 			rc = -EMSGSIZE;
1091 			break;
1092 		}
1093 
1094 		data->s_idx++;
1095 	}
1096 
1097 	return rc;
1098 }
1099 
1100 int ieee802154_llsec_dump_devs(struct sk_buff *skb, struct netlink_callback *cb)
1101 {
1102 	return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devs);
1103 }
1104 
1105 static int llsec_add_devkey(struct net_device *dev, struct genl_info *info)
1106 {
1107 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1108 	struct ieee802154_llsec_device_key key;
1109 	__le64 devaddr;
1110 
1111 	if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER] ||
1112 	    !info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1113 	    ieee802154_llsec_parse_key_id(info, &key.key_id))
1114 		return -EINVAL;
1115 
1116 	devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1117 	key.frame_counter = nla_get_u32(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_COUNTER]);
1118 
1119 	return ops->llsec->add_devkey(dev, devaddr, &key);
1120 }
1121 
1122 int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info)
1123 {
1124 	if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1125 	    (NLM_F_CREATE | NLM_F_EXCL))
1126 		return -EINVAL;
1127 
1128 	return ieee802154_nl_llsec_change(skb, info, llsec_add_devkey);
1129 }
1130 
1131 static int llsec_del_devkey(struct net_device *dev, struct genl_info *info)
1132 {
1133 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1134 	struct ieee802154_llsec_device_key key;
1135 	__le64 devaddr;
1136 
1137 	if (!info->attrs[IEEE802154_ATTR_HW_ADDR] ||
1138 	    ieee802154_llsec_parse_key_id(info, &key.key_id))
1139 		return -EINVAL;
1140 
1141 	devaddr = nla_get_hwaddr(info->attrs[IEEE802154_ATTR_HW_ADDR]);
1142 
1143 	return ops->llsec->del_devkey(dev, devaddr, &key);
1144 }
1145 
1146 int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info)
1147 {
1148 	return ieee802154_nl_llsec_change(skb, info, llsec_del_devkey);
1149 }
1150 
1151 static int
1152 ieee802154_nl_fill_devkey(struct sk_buff *msg, u32 portid, u32 seq,
1153 			  __le64 devaddr,
1154 			  const struct ieee802154_llsec_device_key *devkey,
1155 			  const struct net_device *dev)
1156 {
1157 	void *hdr;
1158 
1159 	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1160 			  IEEE802154_LLSEC_LIST_DEVKEY);
1161 	if (!hdr)
1162 		goto out;
1163 
1164 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1165 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1166 	    nla_put_hwaddr(msg, IEEE802154_ATTR_HW_ADDR, devaddr,
1167 			   IEEE802154_ATTR_PAD) ||
1168 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
1169 			devkey->frame_counter) ||
1170 	    ieee802154_llsec_fill_key_id(msg, &devkey->key_id))
1171 		goto nla_put_failure;
1172 
1173 	genlmsg_end(msg, hdr);
1174 	return 0;
1175 
1176 nla_put_failure:
1177 	genlmsg_cancel(msg, hdr);
1178 out:
1179 	return -EMSGSIZE;
1180 }
1181 
1182 static int llsec_iter_devkeys(struct llsec_dump_data *data)
1183 {
1184 	struct ieee802154_llsec_device *dpos;
1185 	struct ieee802154_llsec_device_key *kpos;
1186 	int rc = 0, idx = 0, idx2;
1187 
1188 	list_for_each_entry(dpos, &data->table->devices, list) {
1189 		if (idx++ < data->s_idx)
1190 			continue;
1191 
1192 		idx2 = 0;
1193 
1194 		list_for_each_entry(kpos, &dpos->keys, list) {
1195 			if (idx2++ < data->s_idx2)
1196 				continue;
1197 
1198 			if (ieee802154_nl_fill_devkey(data->skb, data->portid,
1199 						      data->nlmsg_seq,
1200 						      dpos->hwaddr, kpos,
1201 						      data->dev)) {
1202 				return rc = -EMSGSIZE;
1203 			}
1204 
1205 			data->s_idx2++;
1206 		}
1207 
1208 		data->s_idx++;
1209 	}
1210 
1211 	return rc;
1212 }
1213 
1214 int ieee802154_llsec_dump_devkeys(struct sk_buff *skb,
1215 				  struct netlink_callback *cb)
1216 {
1217 	return ieee802154_llsec_dump_table(skb, cb, llsec_iter_devkeys);
1218 }
1219 
1220 static int
1221 llsec_parse_seclevel(struct genl_info *info,
1222 		     struct ieee802154_llsec_seclevel *sl)
1223 {
1224 	memset(sl, 0, sizeof(*sl));
1225 
1226 	if (!info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE] ||
1227 	    !info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS] ||
1228 	    !info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE])
1229 		return -EINVAL;
1230 
1231 	sl->frame_type = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_FRAME_TYPE]);
1232 	if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD) {
1233 		if (!info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID])
1234 			return -EINVAL;
1235 
1236 		sl->cmd_frame_id = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_CMD_FRAME_ID]);
1237 	}
1238 
1239 	sl->sec_levels = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_SECLEVELS]);
1240 	sl->device_override = nla_get_u8(info->attrs[IEEE802154_ATTR_LLSEC_DEV_OVERRIDE]);
1241 
1242 	return 0;
1243 }
1244 
1245 static int llsec_add_seclevel(struct net_device *dev, struct genl_info *info)
1246 {
1247 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1248 	struct ieee802154_llsec_seclevel sl;
1249 
1250 	if (llsec_parse_seclevel(info, &sl))
1251 		return -EINVAL;
1252 
1253 	return ops->llsec->add_seclevel(dev, &sl);
1254 }
1255 
1256 int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info)
1257 {
1258 	if ((info->nlhdr->nlmsg_flags & (NLM_F_CREATE | NLM_F_EXCL)) !=
1259 	    (NLM_F_CREATE | NLM_F_EXCL))
1260 		return -EINVAL;
1261 
1262 	return ieee802154_nl_llsec_change(skb, info, llsec_add_seclevel);
1263 }
1264 
1265 static int llsec_del_seclevel(struct net_device *dev, struct genl_info *info)
1266 {
1267 	struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
1268 	struct ieee802154_llsec_seclevel sl;
1269 
1270 	if (llsec_parse_seclevel(info, &sl))
1271 		return -EINVAL;
1272 
1273 	return ops->llsec->del_seclevel(dev, &sl);
1274 }
1275 
1276 int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info)
1277 {
1278 	return ieee802154_nl_llsec_change(skb, info, llsec_del_seclevel);
1279 }
1280 
1281 static int
1282 ieee802154_nl_fill_seclevel(struct sk_buff *msg, u32 portid, u32 seq,
1283 			    const struct ieee802154_llsec_seclevel *sl,
1284 			    const struct net_device *dev)
1285 {
1286 	void *hdr;
1287 
1288 	hdr = genlmsg_put(msg, 0, seq, &nl802154_family, NLM_F_MULTI,
1289 			  IEEE802154_LLSEC_LIST_SECLEVEL);
1290 	if (!hdr)
1291 		goto out;
1292 
1293 	if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
1294 	    nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
1295 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_FRAME_TYPE, sl->frame_type) ||
1296 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVELS, sl->sec_levels) ||
1297 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_DEV_OVERRIDE,
1298 		       sl->device_override))
1299 		goto nla_put_failure;
1300 
1301 	if (sl->frame_type == IEEE802154_FC_TYPE_MAC_CMD &&
1302 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_CMD_FRAME_ID,
1303 		       sl->cmd_frame_id))
1304 		goto nla_put_failure;
1305 
1306 	genlmsg_end(msg, hdr);
1307 	return 0;
1308 
1309 nla_put_failure:
1310 	genlmsg_cancel(msg, hdr);
1311 out:
1312 	return -EMSGSIZE;
1313 }
1314 
1315 static int llsec_iter_seclevels(struct llsec_dump_data *data)
1316 {
1317 	struct ieee802154_llsec_seclevel *pos;
1318 	int rc = 0, idx = 0;
1319 
1320 	list_for_each_entry(pos, &data->table->security_levels, list) {
1321 		if (idx++ < data->s_idx)
1322 			continue;
1323 
1324 		if (ieee802154_nl_fill_seclevel(data->skb, data->portid,
1325 						data->nlmsg_seq, pos,
1326 						data->dev)) {
1327 			rc = -EMSGSIZE;
1328 			break;
1329 		}
1330 
1331 		data->s_idx++;
1332 	}
1333 
1334 	return rc;
1335 }
1336 
1337 int ieee802154_llsec_dump_seclevels(struct sk_buff *skb,
1338 				    struct netlink_callback *cb)
1339 {
1340 	return ieee802154_llsec_dump_table(skb, cb, llsec_iter_seclevels);
1341 }
1342