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drm/modes: Fix drm_mode_vrefres() docs
[drm/drm-misc.git] / net / ieee802154 / nl802154.c
blob5a024ca60d3590d9378b03e1cf0912c531c9e760
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 *
4 * Authors:
5 * Alexander Aring <aar@pengutronix.de>
6 *
7 * Based on: net/wireless/nl80211.c
8 */
9
10 #include <linux/rtnetlink.h>
11
12 #include <net/cfg802154.h>
13 #include <net/genetlink.h>
14 #include <net/mac802154.h>
15 #include <net/netlink.h>
16 #include <net/nl802154.h>
17 #include <net/sock.h>
18
19 #include "nl802154.h"
20 #include "rdev-ops.h"
21 #include "core.h"
22
23 /* the netlink family */
24 static struct genl_family nl802154_fam;
25
26 /* multicast groups */
27 enum nl802154_multicast_groups {
28 NL802154_MCGRP_CONFIG,
29 NL802154_MCGRP_SCAN,
30 };
31
32 static const struct genl_multicast_group nl802154_mcgrps[] = {
33 [NL802154_MCGRP_CONFIG] = { .name = "config", },
34 [NL802154_MCGRP_SCAN] = { .name = "scan", },
35 };
36
37 /* returns ERR_PTR values */
38 static struct wpan_dev *
39 __cfg802154_wpan_dev_from_attrs(struct net *netns, struct nlattr **attrs)
40 {
41 struct cfg802154_registered_device *rdev;
42 struct wpan_dev *result = NULL;
43 bool have_ifidx = attrs[NL802154_ATTR_IFINDEX];
44 bool have_wpan_dev_id = attrs[NL802154_ATTR_WPAN_DEV];
45 u64 wpan_dev_id;
46 int wpan_phy_idx = -1;
47 int ifidx = -1;
48
49 ASSERT_RTNL();
50
51 if (!have_ifidx && !have_wpan_dev_id)
52 return ERR_PTR(-EINVAL);
53
54 if (have_ifidx)
55 ifidx = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
56 if (have_wpan_dev_id) {
57 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
58 wpan_phy_idx = wpan_dev_id >> 32;
59 }
60
61 list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
62 struct wpan_dev *wpan_dev;
63
64 if (wpan_phy_net(&rdev->wpan_phy) != netns)
65 continue;
66
67 if (have_wpan_dev_id && rdev->wpan_phy_idx != wpan_phy_idx)
68 continue;
69
70 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
71 if (have_ifidx && wpan_dev->netdev &&
72 wpan_dev->netdev->ifindex == ifidx) {
73 result = wpan_dev;
74 break;
75 }
76 if (have_wpan_dev_id &&
77 wpan_dev->identifier == (u32)wpan_dev_id) {
78 result = wpan_dev;
79 break;
80 }
81 }
82
83 if (result)
84 break;
85 }
86
87 if (result)
88 return result;
89
90 return ERR_PTR(-ENODEV);
91 }
92
93 static struct cfg802154_registered_device *
94 __cfg802154_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
95 {
96 struct cfg802154_registered_device *rdev = NULL, *tmp;
97 struct net_device *netdev;
98
99 ASSERT_RTNL();
100
101 if (!attrs[NL802154_ATTR_WPAN_PHY] &&
102 !attrs[NL802154_ATTR_IFINDEX] &&
103 !attrs[NL802154_ATTR_WPAN_DEV])
104 return ERR_PTR(-EINVAL);
105
106 if (attrs[NL802154_ATTR_WPAN_PHY])
107 rdev = cfg802154_rdev_by_wpan_phy_idx(
108 nla_get_u32(attrs[NL802154_ATTR_WPAN_PHY]));
109
110 if (attrs[NL802154_ATTR_WPAN_DEV]) {
111 u64 wpan_dev_id = nla_get_u64(attrs[NL802154_ATTR_WPAN_DEV]);
112 struct wpan_dev *wpan_dev;
113 bool found = false;
114
115 tmp = cfg802154_rdev_by_wpan_phy_idx(wpan_dev_id >> 32);
116 if (tmp) {
117 /* make sure wpan_dev exists */
118 list_for_each_entry(wpan_dev, &tmp->wpan_dev_list, list) {
119 if (wpan_dev->identifier != (u32)wpan_dev_id)
120 continue;
121 found = true;
122 break;
123 }
124
125 if (!found)
126 tmp = NULL;
127
128 if (rdev && tmp != rdev)
129 return ERR_PTR(-EINVAL);
130 rdev = tmp;
131 }
132 }
133
134 if (attrs[NL802154_ATTR_IFINDEX]) {
135 int ifindex = nla_get_u32(attrs[NL802154_ATTR_IFINDEX]);
136
137 netdev = __dev_get_by_index(netns, ifindex);
138 if (netdev) {
139 if (netdev->ieee802154_ptr)
140 tmp = wpan_phy_to_rdev(
141 netdev->ieee802154_ptr->wpan_phy);
142 else
143 tmp = NULL;
144
145 /* not wireless device -- return error */
146 if (!tmp)
147 return ERR_PTR(-EINVAL);
148
149 /* mismatch -- return error */
150 if (rdev && tmp != rdev)
151 return ERR_PTR(-EINVAL);
152
153 rdev = tmp;
154 }
155 }
156
157 if (!rdev)
158 return ERR_PTR(-ENODEV);
159
160 if (netns != wpan_phy_net(&rdev->wpan_phy))
161 return ERR_PTR(-ENODEV);
162
163 return rdev;
164 }
165
166 /* This function returns a pointer to the driver
167 * that the genl_info item that is passed refers to.
168 *
169 * The result of this can be a PTR_ERR and hence must
170 * be checked with IS_ERR() for errors.
171 */
172 static struct cfg802154_registered_device *
173 cfg802154_get_dev_from_info(struct net *netns, struct genl_info *info)
174 {
175 return __cfg802154_rdev_from_attrs(netns, info->attrs);
176 }
177
178 /* policy for the attributes */
179 static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
180 [NL802154_ATTR_WPAN_PHY] = { .type = NLA_U32 },
181 [NL802154_ATTR_WPAN_PHY_NAME] = { .type = NLA_NUL_STRING,
182 .len = 20-1 },
183
184 [NL802154_ATTR_IFINDEX] = { .type = NLA_U32 },
185 [NL802154_ATTR_IFTYPE] = { .type = NLA_U32 },
186 [NL802154_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
187
188 [NL802154_ATTR_WPAN_DEV] = { .type = NLA_U64 },
189
190 [NL802154_ATTR_PAGE] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_PAGE),
191 [NL802154_ATTR_CHANNEL] = NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_CHANNEL),
192
193 [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },
194
195 [NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
196 [NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },
197 [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
198
199 [NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
200
201 [NL802154_ATTR_PAN_ID] = { .type = NLA_U16, },
202 [NL802154_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
203 [NL802154_ATTR_SHORT_ADDR] = { .type = NLA_U16, },
204
205 [NL802154_ATTR_MIN_BE] = { .type = NLA_U8, },
206 [NL802154_ATTR_MAX_BE] = { .type = NLA_U8, },
207 [NL802154_ATTR_MAX_CSMA_BACKOFFS] = { .type = NLA_U8, },
208
209 [NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
210
211 [NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
212
213 [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },
214
215 [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },
216
217 [NL802154_ATTR_ACKREQ_DEFAULT] = { .type = NLA_U8 },
218
219 [NL802154_ATTR_PID] = { .type = NLA_U32 },
220 [NL802154_ATTR_NETNS_FD] = { .type = NLA_U32 },
221
222 [NL802154_ATTR_COORDINATOR] = { .type = NLA_NESTED },
223
224 [NL802154_ATTR_SCAN_TYPE] =
225 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_ED, NL802154_SCAN_RIT_PASSIVE),
226 [NL802154_ATTR_SCAN_CHANNELS] =
227 NLA_POLICY_MASK(NLA_U32, GENMASK(IEEE802154_MAX_CHANNEL, 0)),
228 [NL802154_ATTR_SCAN_PREAMBLE_CODES] = { .type = NLA_REJECT },
229 [NL802154_ATTR_SCAN_MEAN_PRF] = { .type = NLA_REJECT },
230 [NL802154_ATTR_SCAN_DURATION] =
231 NLA_POLICY_MAX(NLA_U8, IEEE802154_MAX_SCAN_DURATION),
232 [NL802154_ATTR_SCAN_DONE_REASON] =
233 NLA_POLICY_RANGE(NLA_U8, NL802154_SCAN_DONE_REASON_FINISHED,
234 NL802154_SCAN_DONE_REASON_ABORTED),
235 [NL802154_ATTR_BEACON_INTERVAL] =
236 NLA_POLICY_MAX(NLA_U8, IEEE802154_ACTIVE_SCAN_DURATION),
237 [NL802154_ATTR_MAX_ASSOCIATIONS] = { .type = NLA_U32 },
238 [NL802154_ATTR_PEER] = { .type = NLA_NESTED },
239
240 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
241 [NL802154_ATTR_SEC_ENABLED] = { .type = NLA_U8, },
242 [NL802154_ATTR_SEC_OUT_LEVEL] = { .type = NLA_U32, },
243 [NL802154_ATTR_SEC_OUT_KEY_ID] = { .type = NLA_NESTED, },
244 [NL802154_ATTR_SEC_FRAME_COUNTER] = { .type = NLA_U32 },
245
246 [NL802154_ATTR_SEC_LEVEL] = { .type = NLA_NESTED },
247 [NL802154_ATTR_SEC_DEVICE] = { .type = NLA_NESTED },
248 [NL802154_ATTR_SEC_DEVKEY] = { .type = NLA_NESTED },
249 [NL802154_ATTR_SEC_KEY] = { .type = NLA_NESTED },
250 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
251 };
252
253 static int
254 nl802154_prepare_wpan_dev_dump(struct sk_buff *skb,
255 struct netlink_callback *cb,
256 struct cfg802154_registered_device **rdev,
257 struct wpan_dev **wpan_dev)
258 {
259 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
260 int err;
261
262 rtnl_lock();
263
264 if (!cb->args[0]) {
265 *wpan_dev = __cfg802154_wpan_dev_from_attrs(sock_net(skb->sk),
266 info->info.attrs);
267 if (IS_ERR(*wpan_dev)) {
268 err = PTR_ERR(*wpan_dev);
269 goto out_unlock;
270 }
271 *rdev = wpan_phy_to_rdev((*wpan_dev)->wpan_phy);
272 /* 0 is the first index - add 1 to parse only once */
273 cb->args[0] = (*rdev)->wpan_phy_idx + 1;
274 cb->args[1] = (*wpan_dev)->identifier;
275 } else {
276 /* subtract the 1 again here */
277 struct wpan_phy *wpan_phy = wpan_phy_idx_to_wpan_phy(cb->args[0] - 1);
278 struct wpan_dev *tmp;
279
280 if (!wpan_phy) {
281 err = -ENODEV;
282 goto out_unlock;
283 }
284 *rdev = wpan_phy_to_rdev(wpan_phy);
285 *wpan_dev = NULL;
286
287 list_for_each_entry(tmp, &(*rdev)->wpan_dev_list, list) {
288 if (tmp->identifier == cb->args[1]) {
289 *wpan_dev = tmp;
290 break;
291 }
292 }
293
294 if (!*wpan_dev) {
295 err = -ENODEV;
296 goto out_unlock;
297 }
298 }
299
300 return 0;
301 out_unlock:
302 rtnl_unlock();
303 return err;
304 }
305
306 static void
307 nl802154_finish_wpan_dev_dump(struct cfg802154_registered_device *rdev)
308 {
309 rtnl_unlock();
310 }
311
312 /* message building helper */
313 static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
314 int flags, u8 cmd)
315 {
316 /* since there is no private header just add the generic one */
317 return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
318 }
319
320 static int
321 nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
322 {
323 struct nlattr *nl_flags = nla_nest_start_noflag(msg, attr);
324 int i;
325
326 if (!nl_flags)
327 return -ENOBUFS;
328
329 i = 0;
330 while (mask) {
331 if ((mask & 1) && nla_put_flag(msg, i))
332 return -ENOBUFS;
333
334 mask >>= 1;
335 i++;
336 }
337
338 nla_nest_end(msg, nl_flags);
339 return 0;
340 }
341
342 static int
343 nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
344 struct sk_buff *msg)
345 {
346 struct nlattr *nl_page;
347 unsigned long page;
348
349 nl_page = nla_nest_start_noflag(msg, NL802154_ATTR_CHANNELS_SUPPORTED);
350 if (!nl_page)
351 return -ENOBUFS;
352
353 for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
354 if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
355 rdev->wpan_phy.supported.channels[page]))
356 return -ENOBUFS;
357 }
358 nla_nest_end(msg, nl_page);
359
360 return 0;
361 }
362
363 static int
364 nl802154_put_capabilities(struct sk_buff *msg,
365 struct cfg802154_registered_device *rdev)
366 {
367 const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
368 struct nlattr *nl_caps, *nl_channels;
369 int i;
370
371 nl_caps = nla_nest_start_noflag(msg, NL802154_ATTR_WPAN_PHY_CAPS);
372 if (!nl_caps)
373 return -ENOBUFS;
374
375 nl_channels = nla_nest_start_noflag(msg, NL802154_CAP_ATTR_CHANNELS);
376 if (!nl_channels)
377 return -ENOBUFS;
378
379 for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
380 if (caps->channels[i]) {
381 if (nl802154_put_flags(msg, i, caps->channels[i]))
382 return -ENOBUFS;
383 }
384 }
385
386 nla_nest_end(msg, nl_channels);
387
388 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
389 struct nlattr *nl_ed_lvls;
390
391 nl_ed_lvls = nla_nest_start_noflag(msg,
392 NL802154_CAP_ATTR_CCA_ED_LEVELS);
393 if (!nl_ed_lvls)
394 return -ENOBUFS;
395
396 for (i = 0; i < caps->cca_ed_levels_size; i++) {
397 if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
398 return -ENOBUFS;
399 }
400
401 nla_nest_end(msg, nl_ed_lvls);
402 }
403
404 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
405 struct nlattr *nl_tx_pwrs;
406
407 nl_tx_pwrs = nla_nest_start_noflag(msg,
408 NL802154_CAP_ATTR_TX_POWERS);
409 if (!nl_tx_pwrs)
410 return -ENOBUFS;
411
412 for (i = 0; i < caps->tx_powers_size; i++) {
413 if (nla_put_s32(msg, i, caps->tx_powers[i]))
414 return -ENOBUFS;
415 }
416
417 nla_nest_end(msg, nl_tx_pwrs);
418 }
419
420 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
421 if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
422 caps->cca_modes) ||
423 nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
424 caps->cca_opts))
425 return -ENOBUFS;
426 }
427
428 if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
429 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
430 nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
431 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
432 nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
433 caps->min_csma_backoffs) ||
434 nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
435 caps->max_csma_backoffs) ||
436 nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
437 caps->min_frame_retries) ||
438 nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
439 caps->max_frame_retries) ||
440 nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
441 caps->iftypes) ||
442 nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
443 return -ENOBUFS;
444
445 nla_nest_end(msg, nl_caps);
446
447 return 0;
448 }
449
450 static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
451 enum nl802154_commands cmd,
452 struct sk_buff *msg, u32 portid, u32 seq,
453 int flags)
454 {
455 struct nlattr *nl_cmds;
456 void *hdr;
457 int i;
458
459 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
460 if (!hdr)
461 return -ENOBUFS;
462
463 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
464 nla_put_string(msg, NL802154_ATTR_WPAN_PHY_NAME,
465 wpan_phy_name(&rdev->wpan_phy)) ||
466 nla_put_u32(msg, NL802154_ATTR_GENERATION,
467 cfg802154_rdev_list_generation))
468 goto nla_put_failure;
469
470 if (cmd != NL802154_CMD_NEW_WPAN_PHY)
471 goto finish;
472
473 /* DUMP PHY PIB */
474
475 /* current channel settings */
476 if (nla_put_u8(msg, NL802154_ATTR_PAGE,
477 rdev->wpan_phy.current_page) ||
478 nla_put_u8(msg, NL802154_ATTR_CHANNEL,
479 rdev->wpan_phy.current_channel))
480 goto nla_put_failure;
481
482 /* TODO remove this behaviour, we still keep support it for a while
483 * so users can change the behaviour to the new one.
484 */
485 if (nl802154_send_wpan_phy_channels(rdev, msg))
486 goto nla_put_failure;
487
488 /* cca mode */
489 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
490 if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
491 rdev->wpan_phy.cca.mode))
492 goto nla_put_failure;
493
494 if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
495 if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
496 rdev->wpan_phy.cca.opt))
497 goto nla_put_failure;
498 }
499 }
500
501 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
502 if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
503 rdev->wpan_phy.transmit_power))
504 goto nla_put_failure;
505 }
506
507 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
508 if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
509 rdev->wpan_phy.cca_ed_level))
510 goto nla_put_failure;
511 }
512
513 if (nl802154_put_capabilities(msg, rdev))
514 goto nla_put_failure;
515
516 nl_cmds = nla_nest_start_noflag(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
517 if (!nl_cmds)
518 goto nla_put_failure;
519
520 i = 0;
521 #define CMD(op, n) \
522 do { \
523 if (rdev->ops->op) { \
524 i++; \
525 if (nla_put_u32(msg, i, NL802154_CMD_ ## n)) \
526 goto nla_put_failure; \
527 } \
528 } while (0)
529
530 CMD(add_virtual_intf, NEW_INTERFACE);
531 CMD(del_virtual_intf, DEL_INTERFACE);
532 CMD(set_channel, SET_CHANNEL);
533 CMD(set_pan_id, SET_PAN_ID);
534 CMD(set_short_addr, SET_SHORT_ADDR);
535 CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
536 CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
537 CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
538 CMD(set_lbt_mode, SET_LBT_MODE);
539 CMD(set_ackreq_default, SET_ACKREQ_DEFAULT);
540
541 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
542 CMD(set_tx_power, SET_TX_POWER);
543
544 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
545 CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
546
547 if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
548 CMD(set_cca_mode, SET_CCA_MODE);
549
550 #undef CMD
551 nla_nest_end(msg, nl_cmds);
552
553 finish:
554 genlmsg_end(msg, hdr);
555 return 0;
556
557 nla_put_failure:
558 genlmsg_cancel(msg, hdr);
559 return -EMSGSIZE;
560 }
561
562 struct nl802154_dump_wpan_phy_state {
563 s64 filter_wpan_phy;
564 long start;
565
566 };
567
568 static int nl802154_dump_wpan_phy_parse(struct sk_buff *skb,
569 struct netlink_callback *cb,
570 struct nl802154_dump_wpan_phy_state *state)
571 {
572 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
573 struct nlattr **tb = info->info.attrs;
574
575 if (tb[NL802154_ATTR_WPAN_PHY])
576 state->filter_wpan_phy = nla_get_u32(tb[NL802154_ATTR_WPAN_PHY]);
577 if (tb[NL802154_ATTR_WPAN_DEV])
578 state->filter_wpan_phy = nla_get_u64(tb[NL802154_ATTR_WPAN_DEV]) >> 32;
579 if (tb[NL802154_ATTR_IFINDEX]) {
580 struct net_device *netdev;
581 struct cfg802154_registered_device *rdev;
582 int ifidx = nla_get_u32(tb[NL802154_ATTR_IFINDEX]);
583
584 netdev = __dev_get_by_index(&init_net, ifidx);
585 if (!netdev)
586 return -ENODEV;
587 if (netdev->ieee802154_ptr) {
588 rdev = wpan_phy_to_rdev(
589 netdev->ieee802154_ptr->wpan_phy);
590 state->filter_wpan_phy = rdev->wpan_phy_idx;
591 }
592 }
593
594 return 0;
595 }
596
597 static int
598 nl802154_dump_wpan_phy(struct sk_buff *skb, struct netlink_callback *cb)
599 {
600 int idx = 0, ret;
601 struct nl802154_dump_wpan_phy_state *state = (void *)cb->args[0];
602 struct cfg802154_registered_device *rdev;
603
604 rtnl_lock();
605 if (!state) {
606 state = kzalloc(sizeof(*state), GFP_KERNEL);
607 if (!state) {
608 rtnl_unlock();
609 return -ENOMEM;
610 }
611 state->filter_wpan_phy = -1;
612 ret = nl802154_dump_wpan_phy_parse(skb, cb, state);
613 if (ret) {
614 kfree(state);
615 rtnl_unlock();
616 return ret;
617 }
618 cb->args[0] = (long)state;
619 }
620
621 list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
622 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
623 continue;
624 if (++idx <= state->start)
625 continue;
626 if (state->filter_wpan_phy != -1 &&
627 state->filter_wpan_phy != rdev->wpan_phy_idx)
628 continue;
629 /* attempt to fit multiple wpan_phy data chunks into the skb */
630 ret = nl802154_send_wpan_phy(rdev,
631 NL802154_CMD_NEW_WPAN_PHY,
632 skb,
633 NETLINK_CB(cb->skb).portid,
634 cb->nlh->nlmsg_seq, NLM_F_MULTI);
635 if (ret < 0) {
636 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
637 !skb->len && cb->min_dump_alloc < 4096) {
638 cb->min_dump_alloc = 4096;
639 rtnl_unlock();
640 return 1;
641 }
642 idx--;
643 break;
644 }
645 break;
646 }
647 rtnl_unlock();
648
649 state->start = idx;
650
651 return skb->len;
652 }
653
654 static int nl802154_dump_wpan_phy_done(struct netlink_callback *cb)
655 {
656 kfree((void *)cb->args[0]);
657 return 0;
658 }
659
660 static int nl802154_get_wpan_phy(struct sk_buff *skb, struct genl_info *info)
661 {
662 struct sk_buff *msg;
663 struct cfg802154_registered_device *rdev = info->user_ptr[0];
664
665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
666 if (!msg)
667 return -ENOMEM;
668
669 if (nl802154_send_wpan_phy(rdev, NL802154_CMD_NEW_WPAN_PHY, msg,
670 info->snd_portid, info->snd_seq, 0) < 0) {
671 nlmsg_free(msg);
672 return -ENOBUFS;
673 }
674
675 return genlmsg_reply(msg, info);
676 }
677
678 static inline u64 wpan_dev_id(struct wpan_dev *wpan_dev)
679 {
680 return (u64)wpan_dev->identifier |
681 ((u64)wpan_phy_to_rdev(wpan_dev->wpan_phy)->wpan_phy_idx << 32);
682 }
683
684 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
685 #include <net/ieee802154_netdev.h>
686
687 static int
688 ieee802154_llsec_send_key_id(struct sk_buff *msg,
689 const struct ieee802154_llsec_key_id *desc)
690 {
691 struct nlattr *nl_dev_addr;
692
693 if (nla_put_u32(msg, NL802154_KEY_ID_ATTR_MODE, desc->mode))
694 return -ENOBUFS;
695
696 switch (desc->mode) {
697 case NL802154_KEY_ID_MODE_IMPLICIT:
698 nl_dev_addr = nla_nest_start_noflag(msg,
699 NL802154_KEY_ID_ATTR_IMPLICIT);
700 if (!nl_dev_addr)
701 return -ENOBUFS;
702
703 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_PAN_ID,
704 desc->device_addr.pan_id) ||
705 nla_put_u32(msg, NL802154_DEV_ADDR_ATTR_MODE,
706 desc->device_addr.mode))
707 return -ENOBUFS;
708
709 switch (desc->device_addr.mode) {
710 case NL802154_DEV_ADDR_SHORT:
711 if (nla_put_le16(msg, NL802154_DEV_ADDR_ATTR_SHORT,
712 desc->device_addr.short_addr))
713 return -ENOBUFS;
714 break;
715 case NL802154_DEV_ADDR_EXTENDED:
716 if (nla_put_le64(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,
717 desc->device_addr.extended_addr,
718 NL802154_DEV_ADDR_ATTR_PAD))
719 return -ENOBUFS;
720 break;
721 default:
722 /* userspace should handle unknown */
723 break;
724 }
725
726 nla_nest_end(msg, nl_dev_addr);
727 break;
728 case NL802154_KEY_ID_MODE_INDEX:
729 break;
730 case NL802154_KEY_ID_MODE_INDEX_SHORT:
731 /* TODO renmae short_source? */
732 if (nla_put_le32(msg, NL802154_KEY_ID_ATTR_SOURCE_SHORT,
733 desc->short_source))
734 return -ENOBUFS;
735 break;
736 case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
737 if (nla_put_le64(msg, NL802154_KEY_ID_ATTR_SOURCE_EXTENDED,
738 desc->extended_source,
739 NL802154_KEY_ID_ATTR_PAD))
740 return -ENOBUFS;
741 break;
742 default:
743 /* userspace should handle unknown */
744 break;
745 }
746
747 /* TODO key_id to key_idx ? Check naming */
748 if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
749 if (nla_put_u8(msg, NL802154_KEY_ID_ATTR_INDEX, desc->id))
750 return -ENOBUFS;
751 }
752
753 return 0;
754 }
755
756 static int nl802154_get_llsec_params(struct sk_buff *msg,
757 struct cfg802154_registered_device *rdev,
758 struct wpan_dev *wpan_dev)
759 {
760 struct nlattr *nl_key_id;
761 struct ieee802154_llsec_params params;
762 int ret;
763
764 ret = rdev_get_llsec_params(rdev, wpan_dev, &params);
765 if (ret < 0)
766 return ret;
767
768 if (nla_put_u8(msg, NL802154_ATTR_SEC_ENABLED, params.enabled) ||
769 nla_put_u32(msg, NL802154_ATTR_SEC_OUT_LEVEL, params.out_level) ||
770 nla_put_be32(msg, NL802154_ATTR_SEC_FRAME_COUNTER,
771 params.frame_counter))
772 return -ENOBUFS;
773
774 nl_key_id = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_OUT_KEY_ID);
775 if (!nl_key_id)
776 return -ENOBUFS;
777
778 ret = ieee802154_llsec_send_key_id(msg, &params.out_key);
779 if (ret < 0)
780 return ret;
781
782 nla_nest_end(msg, nl_key_id);
783
784 return 0;
785 }
786 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
787
788 static int
789 nl802154_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
790 struct cfg802154_registered_device *rdev,
791 struct wpan_dev *wpan_dev)
792 {
793 struct net_device *dev = wpan_dev->netdev;
794 void *hdr;
795
796 hdr = nl802154hdr_put(msg, portid, seq, flags,
797 NL802154_CMD_NEW_INTERFACE);
798 if (!hdr)
799 return -1;
800
801 if (dev &&
802 (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex) ||
803 nla_put_string(msg, NL802154_ATTR_IFNAME, dev->name)))
804 goto nla_put_failure;
805
806 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx) ||
807 nla_put_u32(msg, NL802154_ATTR_IFTYPE, wpan_dev->iftype) ||
808 nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
809 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD) ||
810 nla_put_u32(msg, NL802154_ATTR_GENERATION,
811 rdev->devlist_generation ^
812 (cfg802154_rdev_list_generation << 2)))
813 goto nla_put_failure;
814
815 /* address settings */
816 if (nla_put_le64(msg, NL802154_ATTR_EXTENDED_ADDR,
817 wpan_dev->extended_addr,
818 NL802154_ATTR_PAD) ||
819 nla_put_le16(msg, NL802154_ATTR_SHORT_ADDR,
820 wpan_dev->short_addr) ||
821 nla_put_le16(msg, NL802154_ATTR_PAN_ID, wpan_dev->pan_id))
822 goto nla_put_failure;
823
824 /* ARET handling */
825 if (nla_put_s8(msg, NL802154_ATTR_MAX_FRAME_RETRIES,
826 wpan_dev->frame_retries) ||
827 nla_put_u8(msg, NL802154_ATTR_MAX_BE, wpan_dev->max_be) ||
828 nla_put_u8(msg, NL802154_ATTR_MAX_CSMA_BACKOFFS,
829 wpan_dev->csma_retries) ||
830 nla_put_u8(msg, NL802154_ATTR_MIN_BE, wpan_dev->min_be))
831 goto nla_put_failure;
832
833 /* listen before transmit */
834 if (nla_put_u8(msg, NL802154_ATTR_LBT_MODE, wpan_dev->lbt))
835 goto nla_put_failure;
836
837 /* ackreq default behaviour */
838 if (nla_put_u8(msg, NL802154_ATTR_ACKREQ_DEFAULT, wpan_dev->ackreq))
839 goto nla_put_failure;
840
841 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
842 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
843 goto out;
844
845 if (nl802154_get_llsec_params(msg, rdev, wpan_dev) < 0)
846 goto nla_put_failure;
847
848 out:
849 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
850
851 genlmsg_end(msg, hdr);
852 return 0;
853
854 nla_put_failure:
855 genlmsg_cancel(msg, hdr);
856 return -EMSGSIZE;
857 }
858
859 static int
860 nl802154_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
861 {
862 int wp_idx = 0;
863 int if_idx = 0;
864 int wp_start = cb->args[0];
865 int if_start = cb->args[1];
866 struct cfg802154_registered_device *rdev;
867 struct wpan_dev *wpan_dev;
868
869 rtnl_lock();
870 list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
871 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), sock_net(skb->sk)))
872 continue;
873 if (wp_idx < wp_start) {
874 wp_idx++;
875 continue;
876 }
877 if_idx = 0;
878
879 list_for_each_entry(wpan_dev, &rdev->wpan_dev_list, list) {
880 if (if_idx < if_start) {
881 if_idx++;
882 continue;
883 }
884 if (nl802154_send_iface(skb, NETLINK_CB(cb->skb).portid,
885 cb->nlh->nlmsg_seq, NLM_F_MULTI,
886 rdev, wpan_dev) < 0) {
887 goto out;
888 }
889 if_idx++;
890 }
891
892 wp_idx++;
893 }
894 out:
895 rtnl_unlock();
896
897 cb->args[0] = wp_idx;
898 cb->args[1] = if_idx;
899
900 return skb->len;
901 }
902
903 static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
904 {
905 struct sk_buff *msg;
906 struct cfg802154_registered_device *rdev = info->user_ptr[0];
907 struct wpan_dev *wdev = info->user_ptr[1];
908
909 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
910 if (!msg)
911 return -ENOMEM;
912
913 if (nl802154_send_iface(msg, info->snd_portid, info->snd_seq, 0,
914 rdev, wdev) < 0) {
915 nlmsg_free(msg);
916 return -ENOBUFS;
917 }
918
919 return genlmsg_reply(msg, info);
920 }
921
922 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
923 {
924 struct cfg802154_registered_device *rdev = info->user_ptr[0];
925 enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
926 __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
927
928 /* TODO avoid failing a new interface
929 * creation due to pending removal?
930 */
931
932 if (!info->attrs[NL802154_ATTR_IFNAME])
933 return -EINVAL;
934
935 if (info->attrs[NL802154_ATTR_IFTYPE]) {
936 type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
937 if (type > NL802154_IFTYPE_MAX ||
938 !(rdev->wpan_phy.supported.iftypes & BIT(type)))
939 return -EINVAL;
940 }
941
942 if (info->attrs[NL802154_ATTR_EXTENDED_ADDR])
943 extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
944
945 if (!rdev->ops->add_virtual_intf)
946 return -EOPNOTSUPP;
947
948 return rdev_add_virtual_intf(rdev,
949 nla_data(info->attrs[NL802154_ATTR_IFNAME]),
950 NET_NAME_USER, type, extended_addr);
951 }
952
953 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
954 {
955 struct cfg802154_registered_device *rdev = info->user_ptr[0];
956 struct wpan_dev *wpan_dev = info->user_ptr[1];
957
958 if (!rdev->ops->del_virtual_intf)
959 return -EOPNOTSUPP;
960
961 /* If we remove a wpan device without a netdev then clear
962 * user_ptr[1] so that nl802154_post_doit won't dereference it
963 * to check if it needs to do dev_put(). Otherwise it crashes
964 * since the wpan_dev has been freed, unlike with a netdev where
965 * we need the dev_put() for the netdev to really be freed.
966 */
967 if (!wpan_dev->netdev)
968 info->user_ptr[1] = NULL;
969
970 return rdev_del_virtual_intf(rdev, wpan_dev);
971 }
972
973 static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
974 {
975 struct cfg802154_registered_device *rdev = info->user_ptr[0];
976 u8 channel, page;
977
978 if (!info->attrs[NL802154_ATTR_PAGE] ||
979 !info->attrs[NL802154_ATTR_CHANNEL])
980 return -EINVAL;
981
982 page = nla_get_u8(info->attrs[NL802154_ATTR_PAGE]);
983 channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
984
985 /* check 802.15.4 constraints */
986 if (!ieee802154_chan_is_valid(&rdev->wpan_phy, page, channel))
987 return -EINVAL;
988
989 return rdev_set_channel(rdev, page, channel);
990 }
991
992 static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
993 {
994 struct cfg802154_registered_device *rdev = info->user_ptr[0];
995 struct wpan_phy_cca cca;
996
997 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
998 return -EOPNOTSUPP;
999
1000 if (!info->attrs[NL802154_ATTR_CCA_MODE])
1001 return -EINVAL;
1002
1003 cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
1004 /* checking 802.15.4 constraints */
1005 if (cca.mode < NL802154_CCA_ENERGY ||
1006 cca.mode > NL802154_CCA_ATTR_MAX ||
1007 !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
1008 return -EINVAL;
1009
1010 if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
1011 if (!info->attrs[NL802154_ATTR_CCA_OPT])
1012 return -EINVAL;
1013
1014 cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
1015 if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
1016 !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
1017 return -EINVAL;
1018 }
1019
1020 return rdev_set_cca_mode(rdev, &cca);
1021 }
1022
1023 static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
1024 {
1025 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1026 s32 ed_level;
1027 int i;
1028
1029 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
1030 return -EOPNOTSUPP;
1031
1032 if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
1033 return -EINVAL;
1034
1035 ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
1036
1037 for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
1038 if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
1039 return rdev_set_cca_ed_level(rdev, ed_level);
1040 }
1041
1042 return -EINVAL;
1043 }
1044
1045 static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
1046 {
1047 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1048 s32 power;
1049 int i;
1050
1051 if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
1052 return -EOPNOTSUPP;
1053
1054 if (!info->attrs[NL802154_ATTR_TX_POWER])
1055 return -EINVAL;
1056
1057 power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
1058
1059 for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
1060 if (power == rdev->wpan_phy.supported.tx_powers[i])
1061 return rdev_set_tx_power(rdev, power);
1062 }
1063
1064 return -EINVAL;
1065 }
1066
1067 static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
1068 {
1069 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1070 struct net_device *dev = info->user_ptr[1];
1071 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1072 __le16 pan_id;
1073
1074 /* conflict here while tx/rx calls */
1075 if (netif_running(dev))
1076 return -EBUSY;
1077
1078 if (wpan_dev->lowpan_dev) {
1079 if (netif_running(wpan_dev->lowpan_dev))
1080 return -EBUSY;
1081 }
1082
1083 /* don't change address fields on monitor */
1084 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1085 !info->attrs[NL802154_ATTR_PAN_ID])
1086 return -EINVAL;
1087
1088 pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1089
1090 /* Only allow changing the PAN ID when the device has no more
1091 * associations ongoing to avoid confusing peers.
1092 */
1093 if (cfg802154_device_is_associated(wpan_dev)) {
1094 NL_SET_ERR_MSG(info->extack,
1095 "Existing associations, changing PAN ID forbidden");
1096 return -EINVAL;
1097 }
1098
1099 return rdev_set_pan_id(rdev, wpan_dev, pan_id);
1100 }
1101
1102 static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
1103 {
1104 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1105 struct net_device *dev = info->user_ptr[1];
1106 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1107 __le16 short_addr;
1108
1109 /* conflict here while tx/rx calls */
1110 if (netif_running(dev))
1111 return -EBUSY;
1112
1113 if (wpan_dev->lowpan_dev) {
1114 if (netif_running(wpan_dev->lowpan_dev))
1115 return -EBUSY;
1116 }
1117
1118 /* don't change address fields on monitor */
1119 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1120 !info->attrs[NL802154_ATTR_SHORT_ADDR])
1121 return -EINVAL;
1122
1123 short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1124
1125 /* The short address only has a meaning when part of a PAN, after a
1126 * proper association procedure. However, we want to still offer the
1127 * possibility to create static networks so changing the short address
1128 * is only allowed when not already associated to other devices with
1129 * the official handshake.
1130 */
1131 if (cfg802154_device_is_associated(wpan_dev)) {
1132 NL_SET_ERR_MSG(info->extack,
1133 "Existing associations, changing short address forbidden");
1134 return -EINVAL;
1135 }
1136
1137 return rdev_set_short_addr(rdev, wpan_dev, short_addr);
1138 }
1139
1140 static int
1141 nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
1142 {
1143 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1144 struct net_device *dev = info->user_ptr[1];
1145 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1146 u8 min_be, max_be;
1147
1148 /* should be set on netif open inside phy settings */
1149 if (netif_running(dev))
1150 return -EBUSY;
1151
1152 if (!info->attrs[NL802154_ATTR_MIN_BE] ||
1153 !info->attrs[NL802154_ATTR_MAX_BE])
1154 return -EINVAL;
1155
1156 min_be = nla_get_u8(info->attrs[NL802154_ATTR_MIN_BE]);
1157 max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
1158
1159 /* check 802.15.4 constraints */
1160 if (min_be < rdev->wpan_phy.supported.min_minbe ||
1161 min_be > rdev->wpan_phy.supported.max_minbe ||
1162 max_be < rdev->wpan_phy.supported.min_maxbe ||
1163 max_be > rdev->wpan_phy.supported.max_maxbe ||
1164 min_be > max_be)
1165 return -EINVAL;
1166
1167 return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
1168 }
1169
1170 static int
1171 nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
1172 {
1173 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1174 struct net_device *dev = info->user_ptr[1];
1175 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1176 u8 max_csma_backoffs;
1177
1178 /* conflict here while other running iface settings */
1179 if (netif_running(dev))
1180 return -EBUSY;
1181
1182 if (!info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS])
1183 return -EINVAL;
1184
1185 max_csma_backoffs = nla_get_u8(
1186 info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
1187
1188 /* check 802.15.4 constraints */
1189 if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
1190 max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
1191 return -EINVAL;
1192
1193 return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
1194 }
1195
1196 static int
1197 nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
1198 {
1199 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1200 struct net_device *dev = info->user_ptr[1];
1201 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1202 s8 max_frame_retries;
1203
1204 if (netif_running(dev))
1205 return -EBUSY;
1206
1207 if (!info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES])
1208 return -EINVAL;
1209
1210 max_frame_retries = nla_get_s8(
1211 info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
1212
1213 /* check 802.15.4 constraints */
1214 if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
1215 max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
1216 return -EINVAL;
1217
1218 return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
1219 }
1220
1221 static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
1222 {
1223 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1224 struct net_device *dev = info->user_ptr[1];
1225 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1226 int mode;
1227
1228 if (netif_running(dev))
1229 return -EBUSY;
1230
1231 if (!info->attrs[NL802154_ATTR_LBT_MODE])
1232 return -EINVAL;
1233
1234 mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
1235
1236 if (mode != 0 && mode != 1)
1237 return -EINVAL;
1238
1239 if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
1240 return -EINVAL;
1241
1242 return rdev_set_lbt_mode(rdev, wpan_dev, mode);
1243 }
1244
1245 static int
1246 nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
1247 {
1248 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1249 struct net_device *dev = info->user_ptr[1];
1250 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1251 int ackreq;
1252
1253 if (netif_running(dev))
1254 return -EBUSY;
1255
1256 if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
1257 return -EINVAL;
1258
1259 ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
1260
1261 if (ackreq != 0 && ackreq != 1)
1262 return -EINVAL;
1263
1264 return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
1265 }
1266
1267 static int nl802154_wpan_phy_netns(struct sk_buff *skb, struct genl_info *info)
1268 {
1269 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1270 struct net *net;
1271 int err;
1272
1273 if (info->attrs[NL802154_ATTR_PID]) {
1274 u32 pid = nla_get_u32(info->attrs[NL802154_ATTR_PID]);
1275
1276 net = get_net_ns_by_pid(pid);
1277 } else if (info->attrs[NL802154_ATTR_NETNS_FD]) {
1278 u32 fd = nla_get_u32(info->attrs[NL802154_ATTR_NETNS_FD]);
1279
1280 net = get_net_ns_by_fd(fd);
1281 } else {
1282 return -EINVAL;
1283 }
1284
1285 if (IS_ERR(net))
1286 return PTR_ERR(net);
1287
1288 err = 0;
1289
1290 /* check if anything to do */
1291 if (!net_eq(wpan_phy_net(&rdev->wpan_phy), net))
1292 err = cfg802154_switch_netns(rdev, net);
1293
1294 put_net(net);
1295 return err;
1296 }
1297
1298 static int nl802154_prep_scan_event_msg(struct sk_buff *msg,
1299 struct cfg802154_registered_device *rdev,
1300 struct wpan_dev *wpan_dev,
1301 u32 portid, u32 seq, int flags, u8 cmd,
1302 struct ieee802154_coord_desc *desc)
1303 {
1304 struct nlattr *nla;
1305 void *hdr;
1306
1307 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1308 if (!hdr)
1309 return -ENOBUFS;
1310
1311 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx))
1312 goto nla_put_failure;
1313
1314 if (wpan_dev->netdev &&
1315 nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex))
1316 goto nla_put_failure;
1317
1318 if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
1319 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD))
1320 goto nla_put_failure;
1321
1322 nla = nla_nest_start_noflag(msg, NL802154_ATTR_COORDINATOR);
1323 if (!nla)
1324 goto nla_put_failure;
1325
1326 if (nla_put(msg, NL802154_COORD_PANID, IEEE802154_PAN_ID_LEN,
1327 &desc->addr.pan_id))
1328 goto nla_put_failure;
1329
1330 if (desc->addr.mode == IEEE802154_ADDR_SHORT) {
1331 if (nla_put(msg, NL802154_COORD_ADDR,
1332 IEEE802154_SHORT_ADDR_LEN,
1333 &desc->addr.short_addr))
1334 goto nla_put_failure;
1335 } else {
1336 if (nla_put(msg, NL802154_COORD_ADDR,
1337 IEEE802154_EXTENDED_ADDR_LEN,
1338 &desc->addr.extended_addr))
1339 goto nla_put_failure;
1340 }
1341
1342 if (nla_put_u8(msg, NL802154_COORD_CHANNEL, desc->channel))
1343 goto nla_put_failure;
1344
1345 if (nla_put_u8(msg, NL802154_COORD_PAGE, desc->page))
1346 goto nla_put_failure;
1347
1348 if (nla_put_u16(msg, NL802154_COORD_SUPERFRAME_SPEC,
1349 desc->superframe_spec))
1350 goto nla_put_failure;
1351
1352 if (nla_put_u8(msg, NL802154_COORD_LINK_QUALITY, desc->link_quality))
1353 goto nla_put_failure;
1354
1355 if (desc->gts_permit && nla_put_flag(msg, NL802154_COORD_GTS_PERMIT))
1356 goto nla_put_failure;
1357
1358 /* TODO: NL802154_COORD_PAYLOAD_DATA if any */
1359
1360 nla_nest_end(msg, nla);
1361
1362 genlmsg_end(msg, hdr);
1363
1364 return 0;
1365
1366 nla_put_failure:
1367 genlmsg_cancel(msg, hdr);
1368
1369 return -EMSGSIZE;
1370 }
1371
1372 int nl802154_scan_event(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
1373 struct ieee802154_coord_desc *desc)
1374 {
1375 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1376 struct sk_buff *msg;
1377 int ret;
1378
1379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1380 if (!msg)
1381 return -ENOMEM;
1382
1383 ret = nl802154_prep_scan_event_msg(msg, rdev, wpan_dev, 0, 0, 0,
1384 NL802154_CMD_SCAN_EVENT,
1385 desc);
1386 if (ret < 0) {
1387 nlmsg_free(msg);
1388 return ret;
1389 }
1390
1391 return genlmsg_multicast_netns(&nl802154_fam, wpan_phy_net(wpan_phy),
1392 msg, 0, NL802154_MCGRP_SCAN, GFP_ATOMIC);
1393 }
1394 EXPORT_SYMBOL_GPL(nl802154_scan_event);
1395
1396 static int nl802154_trigger_scan(struct sk_buff *skb, struct genl_info *info)
1397 {
1398 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1399 struct net_device *dev = info->user_ptr[1];
1400 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1401 struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1402 struct cfg802154_scan_request *request;
1403 u8 type;
1404 int err;
1405
1406 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
1407 NL_SET_ERR_MSG(info->extack, "Monitors are not allowed to perform scans");
1408 return -EOPNOTSUPP;
1409 }
1410
1411 if (!info->attrs[NL802154_ATTR_SCAN_TYPE]) {
1412 NL_SET_ERR_MSG(info->extack, "Malformed request, missing scan type");
1413 return -EINVAL;
1414 }
1415
1416 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1417 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1418 return -EOPNOTSUPP;
1419 }
1420
1421 request = kzalloc(sizeof(*request), GFP_KERNEL);
1422 if (!request)
1423 return -ENOMEM;
1424
1425 request->wpan_dev = wpan_dev;
1426 request->wpan_phy = wpan_phy;
1427
1428 type = nla_get_u8(info->attrs[NL802154_ATTR_SCAN_TYPE]);
1429 switch (type) {
1430 case NL802154_SCAN_ACTIVE:
1431 case NL802154_SCAN_PASSIVE:
1432 request->type = type;
1433 break;
1434 default:
1435 NL_SET_ERR_MSG_FMT(info->extack, "Unsupported scan type: %d", type);
1436 err = -EINVAL;
1437 goto free_request;
1438 }
1439
1440 /* Use current page by default */
1441 request->page = nla_get_u8_default(info->attrs[NL802154_ATTR_PAGE],
1442 wpan_phy->current_page);
1443
1444 /* Scan all supported channels by default */
1445 request->channels =
1446 nla_get_u32_default(info->attrs[NL802154_ATTR_SCAN_CHANNELS],
1447 wpan_phy->supported.channels[request->page]);
1448
1449 /* Use maximum duration order by default */
1450 request->duration =
1451 nla_get_u8_default(info->attrs[NL802154_ATTR_SCAN_DURATION],
1452 IEEE802154_MAX_SCAN_DURATION);
1453
1454 err = rdev_trigger_scan(rdev, request);
1455 if (err) {
1456 pr_err("Failure starting scanning (%d)\n", err);
1457 goto free_request;
1458 }
1459
1460 return 0;
1461
1462 free_request:
1463 kfree(request);
1464
1465 return err;
1466 }
1467
1468 static int nl802154_prep_scan_msg(struct sk_buff *msg,
1469 struct cfg802154_registered_device *rdev,
1470 struct wpan_dev *wpan_dev, u32 portid,
1471 u32 seq, int flags, u8 cmd, u8 arg)
1472 {
1473 void *hdr;
1474
1475 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1476 if (!hdr)
1477 return -ENOBUFS;
1478
1479 if (nla_put_u32(msg, NL802154_ATTR_WPAN_PHY, rdev->wpan_phy_idx))
1480 goto nla_put_failure;
1481
1482 if (wpan_dev->netdev &&
1483 nla_put_u32(msg, NL802154_ATTR_IFINDEX, wpan_dev->netdev->ifindex))
1484 goto nla_put_failure;
1485
1486 if (nla_put_u64_64bit(msg, NL802154_ATTR_WPAN_DEV,
1487 wpan_dev_id(wpan_dev), NL802154_ATTR_PAD))
1488 goto nla_put_failure;
1489
1490 if (cmd == NL802154_CMD_SCAN_DONE &&
1491 nla_put_u8(msg, NL802154_ATTR_SCAN_DONE_REASON, arg))
1492 goto nla_put_failure;
1493
1494 genlmsg_end(msg, hdr);
1495
1496 return 0;
1497
1498 nla_put_failure:
1499 genlmsg_cancel(msg, hdr);
1500
1501 return -EMSGSIZE;
1502 }
1503
1504 static int nl802154_send_scan_msg(struct cfg802154_registered_device *rdev,
1505 struct wpan_dev *wpan_dev, u8 cmd, u8 arg)
1506 {
1507 struct sk_buff *msg;
1508 int ret;
1509
1510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1511 if (!msg)
1512 return -ENOMEM;
1513
1514 ret = nl802154_prep_scan_msg(msg, rdev, wpan_dev, 0, 0, 0, cmd, arg);
1515 if (ret < 0) {
1516 nlmsg_free(msg);
1517 return ret;
1518 }
1519
1520 return genlmsg_multicast_netns(&nl802154_fam,
1521 wpan_phy_net(&rdev->wpan_phy), msg, 0,
1522 NL802154_MCGRP_SCAN, GFP_KERNEL);
1523 }
1524
1525 int nl802154_scan_started(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
1526 {
1527 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1528 int err;
1529
1530 /* Ignore errors when there are no listeners */
1531 err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_TRIGGER_SCAN, 0);
1532 if (err == -ESRCH)
1533 err = 0;
1534
1535 return err;
1536 }
1537 EXPORT_SYMBOL_GPL(nl802154_scan_started);
1538
1539 int nl802154_scan_done(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
1540 enum nl802154_scan_done_reasons reason)
1541 {
1542 struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(wpan_phy);
1543 int err;
1544
1545 /* Ignore errors when there are no listeners */
1546 err = nl802154_send_scan_msg(rdev, wpan_dev, NL802154_CMD_SCAN_DONE, reason);
1547 if (err == -ESRCH)
1548 err = 0;
1549
1550 return err;
1551 }
1552 EXPORT_SYMBOL_GPL(nl802154_scan_done);
1553
1554 static int nl802154_abort_scan(struct sk_buff *skb, struct genl_info *info)
1555 {
1556 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1557 struct net_device *dev = info->user_ptr[1];
1558 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1559
1560 /* Resources are released in the notification helper above */
1561 return rdev_abort_scan(rdev, wpan_dev);
1562 }
1563
1564 static int
1565 nl802154_send_beacons(struct sk_buff *skb, struct genl_info *info)
1566 {
1567 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1568 struct net_device *dev = info->user_ptr[1];
1569 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1570 struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1571 struct cfg802154_beacon_request *request;
1572 int err;
1573
1574 if (wpan_dev->iftype != NL802154_IFTYPE_COORD) {
1575 NL_SET_ERR_MSG(info->extack, "Only coordinators can send beacons");
1576 return -EOPNOTSUPP;
1577 }
1578
1579 if (wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
1580 NL_SET_ERR_MSG(info->extack, "Device is not part of any PAN");
1581 return -EPERM;
1582 }
1583
1584 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1585 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1586 return -EOPNOTSUPP;
1587 }
1588
1589 request = kzalloc(sizeof(*request), GFP_KERNEL);
1590 if (!request)
1591 return -ENOMEM;
1592
1593 request->wpan_dev = wpan_dev;
1594 request->wpan_phy = wpan_phy;
1595
1596 /* Use maximum duration order by default */
1597 request->interval = nla_get_u8_default(info->attrs[NL802154_ATTR_BEACON_INTERVAL],
1598 IEEE802154_MAX_SCAN_DURATION);
1599
1600 err = rdev_send_beacons(rdev, request);
1601 if (err) {
1602 pr_err("Failure starting sending beacons (%d)\n", err);
1603 goto free_request;
1604 }
1605
1606 return 0;
1607
1608 free_request:
1609 kfree(request);
1610
1611 return err;
1612 }
1613
1614 void nl802154_beaconing_done(struct wpan_dev *wpan_dev)
1615 {
1616 /* NOP */
1617 }
1618 EXPORT_SYMBOL_GPL(nl802154_beaconing_done);
1619
1620 static int
1621 nl802154_stop_beacons(struct sk_buff *skb, struct genl_info *info)
1622 {
1623 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1624 struct net_device *dev = info->user_ptr[1];
1625 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1626
1627 /* Resources are released in the notification helper above */
1628 return rdev_stop_beacons(rdev, wpan_dev);
1629 }
1630
1631 static int nl802154_associate(struct sk_buff *skb, struct genl_info *info)
1632 {
1633 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1634 struct net_device *dev = info->user_ptr[1];
1635 struct wpan_dev *wpan_dev;
1636 struct wpan_phy *wpan_phy;
1637 struct ieee802154_addr coord;
1638 int err;
1639
1640 wpan_dev = dev->ieee802154_ptr;
1641 wpan_phy = &rdev->wpan_phy;
1642
1643 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1644 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1645 return -EOPNOTSUPP;
1646 }
1647
1648 if (!info->attrs[NL802154_ATTR_PAN_ID] ||
1649 !info->attrs[NL802154_ATTR_EXTENDED_ADDR])
1650 return -EINVAL;
1651
1652 coord.pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
1653 coord.mode = IEEE802154_ADDR_LONG;
1654 coord.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
1655
1656 mutex_lock(&wpan_dev->association_lock);
1657 err = rdev_associate(rdev, wpan_dev, &coord);
1658 mutex_unlock(&wpan_dev->association_lock);
1659 if (err)
1660 pr_err("Association with PAN ID 0x%x failed (%d)\n",
1661 le16_to_cpu(coord.pan_id), err);
1662
1663 return err;
1664 }
1665
1666 static int nl802154_disassociate(struct sk_buff *skb, struct genl_info *info)
1667 {
1668 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1669 struct net_device *dev = info->user_ptr[1];
1670 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1671 struct wpan_phy *wpan_phy = &rdev->wpan_phy;
1672 struct ieee802154_addr target;
1673
1674 if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
1675 NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
1676 return -EOPNOTSUPP;
1677 }
1678
1679 target.pan_id = wpan_dev->pan_id;
1680
1681 if (info->attrs[NL802154_ATTR_EXTENDED_ADDR]) {
1682 target.mode = IEEE802154_ADDR_LONG;
1683 target.extended_addr = nla_get_le64(info->attrs[NL802154_ATTR_EXTENDED_ADDR]);
1684 } else if (info->attrs[NL802154_ATTR_SHORT_ADDR]) {
1685 target.mode = IEEE802154_ADDR_SHORT;
1686 target.short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
1687 } else {
1688 NL_SET_ERR_MSG(info->extack, "Device address is missing");
1689 return -EINVAL;
1690 }
1691
1692 mutex_lock(&wpan_dev->association_lock);
1693 rdev_disassociate(rdev, wpan_dev, &target);
1694 mutex_unlock(&wpan_dev->association_lock);
1695
1696 return 0;
1697 }
1698
1699 static int nl802154_set_max_associations(struct sk_buff *skb, struct genl_info *info)
1700 {
1701 struct net_device *dev = info->user_ptr[1];
1702 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1703 unsigned int max_assoc;
1704
1705 if (!info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]) {
1706 NL_SET_ERR_MSG(info->extack, "No maximum number of association given");
1707 return -EINVAL;
1708 }
1709
1710 max_assoc = nla_get_u32(info->attrs[NL802154_ATTR_MAX_ASSOCIATIONS]);
1711
1712 mutex_lock(&wpan_dev->association_lock);
1713 cfg802154_set_max_associations(wpan_dev, max_assoc);
1714 mutex_unlock(&wpan_dev->association_lock);
1715
1716 return 0;
1717 }
1718
1719 static int nl802154_send_peer_info(struct sk_buff *msg,
1720 struct netlink_callback *cb,
1721 u32 seq, int flags,
1722 struct cfg802154_registered_device *rdev,
1723 struct wpan_dev *wpan_dev,
1724 struct ieee802154_pan_device *peer,
1725 enum nl802154_peer_type type)
1726 {
1727 struct nlattr *nla;
1728 void *hdr;
1729
1730 ASSERT_RTNL();
1731
1732 hdr = nl802154hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
1733 NL802154_CMD_LIST_ASSOCIATIONS);
1734 if (!hdr)
1735 return -ENOBUFS;
1736
1737 genl_dump_check_consistent(cb, hdr);
1738
1739 nla = nla_nest_start_noflag(msg, NL802154_ATTR_PEER);
1740 if (!nla)
1741 goto nla_put_failure;
1742
1743 if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_PEER_TYPE, type))
1744 goto nla_put_failure;
1745
1746 if (nla_put_u8(msg, NL802154_DEV_ADDR_ATTR_MODE, peer->mode))
1747 goto nla_put_failure;
1748
1749 if (nla_put(msg, NL802154_DEV_ADDR_ATTR_SHORT,
1750 IEEE802154_SHORT_ADDR_LEN, &peer->short_addr))
1751 goto nla_put_failure;
1752
1753 if (nla_put(msg, NL802154_DEV_ADDR_ATTR_EXTENDED,
1754 IEEE802154_EXTENDED_ADDR_LEN, &peer->extended_addr))
1755 goto nla_put_failure;
1756
1757 nla_nest_end(msg, nla);
1758
1759 genlmsg_end(msg, hdr);
1760
1761 return 0;
1762
1763 nla_put_failure:
1764 genlmsg_cancel(msg, hdr);
1765 return -EMSGSIZE;
1766 }
1767
1768 static int nl802154_list_associations(struct sk_buff *skb,
1769 struct netlink_callback *cb)
1770 {
1771 struct cfg802154_registered_device *rdev;
1772 struct ieee802154_pan_device *child;
1773 struct wpan_dev *wpan_dev;
1774 int err;
1775
1776 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
1777 if (err)
1778 return err;
1779
1780 mutex_lock(&wpan_dev->association_lock);
1781
1782 if (cb->args[2])
1783 goto out;
1784
1785 if (wpan_dev->parent) {
1786 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq,
1787 NLM_F_MULTI, rdev, wpan_dev,
1788 wpan_dev->parent,
1789 NL802154_PEER_TYPE_PARENT);
1790 if (err < 0)
1791 goto out_err;
1792 }
1793
1794 list_for_each_entry(child, &wpan_dev->children, node) {
1795 err = nl802154_send_peer_info(skb, cb, cb->nlh->nlmsg_seq,
1796 NLM_F_MULTI, rdev, wpan_dev,
1797 child,
1798 NL802154_PEER_TYPE_CHILD);
1799 if (err < 0)
1800 goto out_err;
1801 }
1802
1803 cb->args[2] = 1;
1804 out:
1805 err = skb->len;
1806 out_err:
1807 mutex_unlock(&wpan_dev->association_lock);
1808
1809 nl802154_finish_wpan_dev_dump(rdev);
1810
1811 return err;
1812 }
1813
1814 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
1815 static const struct nla_policy nl802154_dev_addr_policy[NL802154_DEV_ADDR_ATTR_MAX + 1] = {
1816 [NL802154_DEV_ADDR_ATTR_PAN_ID] = { .type = NLA_U16 },
1817 [NL802154_DEV_ADDR_ATTR_MODE] = { .type = NLA_U32 },
1818 [NL802154_DEV_ADDR_ATTR_SHORT] = { .type = NLA_U16 },
1819 [NL802154_DEV_ADDR_ATTR_EXTENDED] = { .type = NLA_U64 },
1820 };
1821
1822 static int
1823 ieee802154_llsec_parse_dev_addr(struct nlattr *nla,
1824 struct ieee802154_addr *addr)
1825 {
1826 struct nlattr *attrs[NL802154_DEV_ADDR_ATTR_MAX + 1];
1827
1828 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ADDR_ATTR_MAX, nla, nl802154_dev_addr_policy, NULL))
1829 return -EINVAL;
1830
1831 if (!attrs[NL802154_DEV_ADDR_ATTR_PAN_ID] || !attrs[NL802154_DEV_ADDR_ATTR_MODE])
1832 return -EINVAL;
1833
1834 addr->pan_id = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_PAN_ID]);
1835 addr->mode = nla_get_u32(attrs[NL802154_DEV_ADDR_ATTR_MODE]);
1836 switch (addr->mode) {
1837 case NL802154_DEV_ADDR_SHORT:
1838 if (!attrs[NL802154_DEV_ADDR_ATTR_SHORT])
1839 return -EINVAL;
1840 addr->short_addr = nla_get_le16(attrs[NL802154_DEV_ADDR_ATTR_SHORT]);
1841 break;
1842 case NL802154_DEV_ADDR_EXTENDED:
1843 if (!attrs[NL802154_DEV_ADDR_ATTR_EXTENDED])
1844 return -EINVAL;
1845 addr->extended_addr = nla_get_le64(attrs[NL802154_DEV_ADDR_ATTR_EXTENDED]);
1846 break;
1847 default:
1848 return -EINVAL;
1849 }
1850
1851 return 0;
1852 }
1853
1854 static const struct nla_policy nl802154_key_id_policy[NL802154_KEY_ID_ATTR_MAX + 1] = {
1855 [NL802154_KEY_ID_ATTR_MODE] = { .type = NLA_U32 },
1856 [NL802154_KEY_ID_ATTR_INDEX] = { .type = NLA_U8 },
1857 [NL802154_KEY_ID_ATTR_IMPLICIT] = { .type = NLA_NESTED },
1858 [NL802154_KEY_ID_ATTR_SOURCE_SHORT] = { .type = NLA_U32 },
1859 [NL802154_KEY_ID_ATTR_SOURCE_EXTENDED] = { .type = NLA_U64 },
1860 };
1861
1862 static int
1863 ieee802154_llsec_parse_key_id(struct nlattr *nla,
1864 struct ieee802154_llsec_key_id *desc)
1865 {
1866 struct nlattr *attrs[NL802154_KEY_ID_ATTR_MAX + 1];
1867
1868 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_KEY_ID_ATTR_MAX, nla, nl802154_key_id_policy, NULL))
1869 return -EINVAL;
1870
1871 if (!attrs[NL802154_KEY_ID_ATTR_MODE])
1872 return -EINVAL;
1873
1874 desc->mode = nla_get_u32(attrs[NL802154_KEY_ID_ATTR_MODE]);
1875 switch (desc->mode) {
1876 case NL802154_KEY_ID_MODE_IMPLICIT:
1877 if (!attrs[NL802154_KEY_ID_ATTR_IMPLICIT])
1878 return -EINVAL;
1879
1880 if (ieee802154_llsec_parse_dev_addr(attrs[NL802154_KEY_ID_ATTR_IMPLICIT],
1881 &desc->device_addr) < 0)
1882 return -EINVAL;
1883 break;
1884 case NL802154_KEY_ID_MODE_INDEX:
1885 break;
1886 case NL802154_KEY_ID_MODE_INDEX_SHORT:
1887 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT])
1888 return -EINVAL;
1889
1890 desc->short_source = nla_get_le32(attrs[NL802154_KEY_ID_ATTR_SOURCE_SHORT]);
1891 break;
1892 case NL802154_KEY_ID_MODE_INDEX_EXTENDED:
1893 if (!attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED])
1894 return -EINVAL;
1895
1896 desc->extended_source = nla_get_le64(attrs[NL802154_KEY_ID_ATTR_SOURCE_EXTENDED]);
1897 break;
1898 default:
1899 return -EINVAL;
1900 }
1901
1902 if (desc->mode != NL802154_KEY_ID_MODE_IMPLICIT) {
1903 if (!attrs[NL802154_KEY_ID_ATTR_INDEX])
1904 return -EINVAL;
1905
1906 /* TODO change id to idx */
1907 desc->id = nla_get_u8(attrs[NL802154_KEY_ID_ATTR_INDEX]);
1908 }
1909
1910 return 0;
1911 }
1912
1913 static int nl802154_set_llsec_params(struct sk_buff *skb,
1914 struct genl_info *info)
1915 {
1916 struct cfg802154_registered_device *rdev = info->user_ptr[0];
1917 struct net_device *dev = info->user_ptr[1];
1918 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
1919 struct ieee802154_llsec_params params;
1920 u32 changed = 0;
1921 int ret;
1922
1923 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
1924 return -EOPNOTSUPP;
1925
1926 if (info->attrs[NL802154_ATTR_SEC_ENABLED]) {
1927 u8 enabled;
1928
1929 enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1930 if (enabled != 0 && enabled != 1)
1931 return -EINVAL;
1932
1933 params.enabled = nla_get_u8(info->attrs[NL802154_ATTR_SEC_ENABLED]);
1934 changed |= IEEE802154_LLSEC_PARAM_ENABLED;
1935 }
1936
1937 if (info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID]) {
1938 ret = ieee802154_llsec_parse_key_id(info->attrs[NL802154_ATTR_SEC_OUT_KEY_ID],
1939 &params.out_key);
1940 if (ret < 0)
1941 return ret;
1942
1943 changed |= IEEE802154_LLSEC_PARAM_OUT_KEY;
1944 }
1945
1946 if (info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]) {
1947 params.out_level = nla_get_u32(info->attrs[NL802154_ATTR_SEC_OUT_LEVEL]);
1948 if (params.out_level > NL802154_SECLEVEL_MAX)
1949 return -EINVAL;
1950
1951 changed |= IEEE802154_LLSEC_PARAM_OUT_LEVEL;
1952 }
1953
1954 if (info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]) {
1955 params.frame_counter = nla_get_be32(info->attrs[NL802154_ATTR_SEC_FRAME_COUNTER]);
1956 changed |= IEEE802154_LLSEC_PARAM_FRAME_COUNTER;
1957 }
1958
1959 return rdev_set_llsec_params(rdev, wpan_dev, &params, changed);
1960 }
1961
1962 static int nl802154_send_key(struct sk_buff *msg, u32 cmd, u32 portid,
1963 u32 seq, int flags,
1964 struct cfg802154_registered_device *rdev,
1965 struct net_device *dev,
1966 const struct ieee802154_llsec_key_entry *key)
1967 {
1968 void *hdr;
1969 u32 commands[NL802154_CMD_FRAME_NR_IDS / 32];
1970 struct nlattr *nl_key, *nl_key_id;
1971
1972 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
1973 if (!hdr)
1974 return -ENOBUFS;
1975
1976 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
1977 goto nla_put_failure;
1978
1979 nl_key = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_KEY);
1980 if (!nl_key)
1981 goto nla_put_failure;
1982
1983 nl_key_id = nla_nest_start_noflag(msg, NL802154_KEY_ATTR_ID);
1984 if (!nl_key_id)
1985 goto nla_put_failure;
1986
1987 if (ieee802154_llsec_send_key_id(msg, &key->id) < 0)
1988 goto nla_put_failure;
1989
1990 nla_nest_end(msg, nl_key_id);
1991
1992 if (nla_put_u8(msg, NL802154_KEY_ATTR_USAGE_FRAMES,
1993 key->key->frame_types))
1994 goto nla_put_failure;
1995
1996 if (key->key->frame_types & BIT(NL802154_FRAME_CMD)) {
1997 /* TODO for each nested */
1998 memset(commands, 0, sizeof(commands));
1999 commands[7] = key->key->cmd_frame_ids;
2000 if (nla_put(msg, NL802154_KEY_ATTR_USAGE_CMDS,
2001 sizeof(commands), commands))
2002 goto nla_put_failure;
2003 }
2004
2005 if (nla_put(msg, NL802154_KEY_ATTR_BYTES, NL802154_KEY_SIZE,
2006 key->key->key))
2007 goto nla_put_failure;
2008
2009 nla_nest_end(msg, nl_key);
2010 genlmsg_end(msg, hdr);
2011
2012 return 0;
2013
2014 nla_put_failure:
2015 genlmsg_cancel(msg, hdr);
2016 return -EMSGSIZE;
2017 }
2018
2019 static int
2020 nl802154_dump_llsec_key(struct sk_buff *skb, struct netlink_callback *cb)
2021 {
2022 struct cfg802154_registered_device *rdev = NULL;
2023 struct ieee802154_llsec_key_entry *key;
2024 struct ieee802154_llsec_table *table;
2025 struct wpan_dev *wpan_dev;
2026 int err;
2027
2028 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2029 if (err)
2030 return err;
2031
2032 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2033 err = skb->len;
2034 goto out_err;
2035 }
2036
2037 if (!wpan_dev->netdev) {
2038 err = -EINVAL;
2039 goto out_err;
2040 }
2041
2042 rdev_lock_llsec_table(rdev, wpan_dev);
2043 rdev_get_llsec_table(rdev, wpan_dev, &table);
2044
2045 /* TODO make it like station dump */
2046 if (cb->args[2])
2047 goto out;
2048
2049 list_for_each_entry(key, &table->keys, list) {
2050 if (nl802154_send_key(skb, NL802154_CMD_NEW_SEC_KEY,
2051 NETLINK_CB(cb->skb).portid,
2052 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2053 rdev, wpan_dev->netdev, key) < 0) {
2054 /* TODO */
2055 err = -EIO;
2056 rdev_unlock_llsec_table(rdev, wpan_dev);
2057 goto out_err;
2058 }
2059 }
2060
2061 cb->args[2] = 1;
2062
2063 out:
2064 rdev_unlock_llsec_table(rdev, wpan_dev);
2065 err = skb->len;
2066 out_err:
2067 nl802154_finish_wpan_dev_dump(rdev);
2068
2069 return err;
2070 }
2071
2072 static const struct nla_policy nl802154_key_policy[NL802154_KEY_ATTR_MAX + 1] = {
2073 [NL802154_KEY_ATTR_ID] = { NLA_NESTED },
2074 /* TODO handle it as for_each_nested and NLA_FLAG? */
2075 [NL802154_KEY_ATTR_USAGE_FRAMES] = { NLA_U8 },
2076 /* TODO handle it as for_each_nested, not static array? */
2077 [NL802154_KEY_ATTR_USAGE_CMDS] = { .len = NL802154_CMD_FRAME_NR_IDS / 8 },
2078 [NL802154_KEY_ATTR_BYTES] = { .len = NL802154_KEY_SIZE },
2079 };
2080
2081 static int nl802154_add_llsec_key(struct sk_buff *skb, struct genl_info *info)
2082 {
2083 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2084 struct net_device *dev = info->user_ptr[1];
2085 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2086 struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
2087 struct ieee802154_llsec_key key = { };
2088 struct ieee802154_llsec_key_id id = { };
2089 u32 commands[NL802154_CMD_FRAME_NR_IDS / 32] = { };
2090
2091 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2092 return -EOPNOTSUPP;
2093
2094 if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
2095 nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
2096 return -EINVAL;
2097
2098 if (!attrs[NL802154_KEY_ATTR_USAGE_FRAMES] ||
2099 !attrs[NL802154_KEY_ATTR_BYTES])
2100 return -EINVAL;
2101
2102 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2103 return -ENOBUFS;
2104
2105 key.frame_types = nla_get_u8(attrs[NL802154_KEY_ATTR_USAGE_FRAMES]);
2106 if (key.frame_types > BIT(NL802154_FRAME_MAX) ||
2107 ((key.frame_types & BIT(NL802154_FRAME_CMD)) &&
2108 !attrs[NL802154_KEY_ATTR_USAGE_CMDS]))
2109 return -EINVAL;
2110
2111 if (attrs[NL802154_KEY_ATTR_USAGE_CMDS]) {
2112 /* TODO for each nested */
2113 nla_memcpy(commands, attrs[NL802154_KEY_ATTR_USAGE_CMDS],
2114 NL802154_CMD_FRAME_NR_IDS / 8);
2115
2116 /* TODO understand the -EINVAL logic here? last condition */
2117 if (commands[0] || commands[1] || commands[2] || commands[3] ||
2118 commands[4] || commands[5] || commands[6] ||
2119 commands[7] > BIT(NL802154_CMD_FRAME_MAX))
2120 return -EINVAL;
2121
2122 key.cmd_frame_ids = commands[7];
2123 } else {
2124 key.cmd_frame_ids = 0;
2125 }
2126
2127 nla_memcpy(key.key, attrs[NL802154_KEY_ATTR_BYTES], NL802154_KEY_SIZE);
2128
2129 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2130 return -ENOBUFS;
2131
2132 return rdev_add_llsec_key(rdev, wpan_dev, &id, &key);
2133 }
2134
2135 static int nl802154_del_llsec_key(struct sk_buff *skb, struct genl_info *info)
2136 {
2137 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2138 struct net_device *dev = info->user_ptr[1];
2139 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2140 struct nlattr *attrs[NL802154_KEY_ATTR_MAX + 1];
2141 struct ieee802154_llsec_key_id id;
2142
2143 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2144 return -EOPNOTSUPP;
2145
2146 if (!info->attrs[NL802154_ATTR_SEC_KEY] ||
2147 nla_parse_nested_deprecated(attrs, NL802154_KEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_KEY], nl802154_key_policy, info->extack))
2148 return -EINVAL;
2149
2150 if (ieee802154_llsec_parse_key_id(attrs[NL802154_KEY_ATTR_ID], &id) < 0)
2151 return -ENOBUFS;
2152
2153 return rdev_del_llsec_key(rdev, wpan_dev, &id);
2154 }
2155
2156 static int nl802154_send_device(struct sk_buff *msg, u32 cmd, u32 portid,
2157 u32 seq, int flags,
2158 struct cfg802154_registered_device *rdev,
2159 struct net_device *dev,
2160 const struct ieee802154_llsec_device *dev_desc)
2161 {
2162 void *hdr;
2163 struct nlattr *nl_device;
2164
2165 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2166 if (!hdr)
2167 return -ENOBUFS;
2168
2169 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2170 goto nla_put_failure;
2171
2172 nl_device = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVICE);
2173 if (!nl_device)
2174 goto nla_put_failure;
2175
2176 if (nla_put_u32(msg, NL802154_DEV_ATTR_FRAME_COUNTER,
2177 dev_desc->frame_counter) ||
2178 nla_put_le16(msg, NL802154_DEV_ATTR_PAN_ID, dev_desc->pan_id) ||
2179 nla_put_le16(msg, NL802154_DEV_ATTR_SHORT_ADDR,
2180 dev_desc->short_addr) ||
2181 nla_put_le64(msg, NL802154_DEV_ATTR_EXTENDED_ADDR,
2182 dev_desc->hwaddr, NL802154_DEV_ATTR_PAD) ||
2183 nla_put_u8(msg, NL802154_DEV_ATTR_SECLEVEL_EXEMPT,
2184 dev_desc->seclevel_exempt) ||
2185 nla_put_u32(msg, NL802154_DEV_ATTR_KEY_MODE, dev_desc->key_mode))
2186 goto nla_put_failure;
2187
2188 nla_nest_end(msg, nl_device);
2189 genlmsg_end(msg, hdr);
2190
2191 return 0;
2192
2193 nla_put_failure:
2194 genlmsg_cancel(msg, hdr);
2195 return -EMSGSIZE;
2196 }
2197
2198 static int
2199 nl802154_dump_llsec_dev(struct sk_buff *skb, struct netlink_callback *cb)
2200 {
2201 struct cfg802154_registered_device *rdev = NULL;
2202 struct ieee802154_llsec_device *dev;
2203 struct ieee802154_llsec_table *table;
2204 struct wpan_dev *wpan_dev;
2205 int err;
2206
2207 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2208 if (err)
2209 return err;
2210
2211 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2212 err = skb->len;
2213 goto out_err;
2214 }
2215
2216 if (!wpan_dev->netdev) {
2217 err = -EINVAL;
2218 goto out_err;
2219 }
2220
2221 rdev_lock_llsec_table(rdev, wpan_dev);
2222 rdev_get_llsec_table(rdev, wpan_dev, &table);
2223
2224 /* TODO make it like station dump */
2225 if (cb->args[2])
2226 goto out;
2227
2228 list_for_each_entry(dev, &table->devices, list) {
2229 if (nl802154_send_device(skb, NL802154_CMD_NEW_SEC_LEVEL,
2230 NETLINK_CB(cb->skb).portid,
2231 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2232 rdev, wpan_dev->netdev, dev) < 0) {
2233 /* TODO */
2234 err = -EIO;
2235 rdev_unlock_llsec_table(rdev, wpan_dev);
2236 goto out_err;
2237 }
2238 }
2239
2240 cb->args[2] = 1;
2241
2242 out:
2243 rdev_unlock_llsec_table(rdev, wpan_dev);
2244 err = skb->len;
2245 out_err:
2246 nl802154_finish_wpan_dev_dump(rdev);
2247
2248 return err;
2249 }
2250
2251 static const struct nla_policy nl802154_dev_policy[NL802154_DEV_ATTR_MAX + 1] = {
2252 [NL802154_DEV_ATTR_FRAME_COUNTER] = { NLA_U32 },
2253 [NL802154_DEV_ATTR_PAN_ID] = { .type = NLA_U16 },
2254 [NL802154_DEV_ATTR_SHORT_ADDR] = { .type = NLA_U16 },
2255 [NL802154_DEV_ATTR_EXTENDED_ADDR] = { .type = NLA_U64 },
2256 [NL802154_DEV_ATTR_SECLEVEL_EXEMPT] = { NLA_U8 },
2257 [NL802154_DEV_ATTR_KEY_MODE] = { NLA_U32 },
2258 };
2259
2260 static int
2261 ieee802154_llsec_parse_device(struct nlattr *nla,
2262 struct ieee802154_llsec_device *dev)
2263 {
2264 struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
2265
2266 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, nla, nl802154_dev_policy, NULL))
2267 return -EINVAL;
2268
2269 memset(dev, 0, sizeof(*dev));
2270
2271 if (!attrs[NL802154_DEV_ATTR_FRAME_COUNTER] ||
2272 !attrs[NL802154_DEV_ATTR_PAN_ID] ||
2273 !attrs[NL802154_DEV_ATTR_SHORT_ADDR] ||
2274 !attrs[NL802154_DEV_ATTR_EXTENDED_ADDR] ||
2275 !attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT] ||
2276 !attrs[NL802154_DEV_ATTR_KEY_MODE])
2277 return -EINVAL;
2278
2279 /* TODO be32 */
2280 dev->frame_counter = nla_get_u32(attrs[NL802154_DEV_ATTR_FRAME_COUNTER]);
2281 dev->pan_id = nla_get_le16(attrs[NL802154_DEV_ATTR_PAN_ID]);
2282 dev->short_addr = nla_get_le16(attrs[NL802154_DEV_ATTR_SHORT_ADDR]);
2283 /* TODO rename hwaddr to extended_addr */
2284 dev->hwaddr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
2285 dev->seclevel_exempt = nla_get_u8(attrs[NL802154_DEV_ATTR_SECLEVEL_EXEMPT]);
2286 dev->key_mode = nla_get_u32(attrs[NL802154_DEV_ATTR_KEY_MODE]);
2287
2288 if (dev->key_mode > NL802154_DEVKEY_MAX ||
2289 (dev->seclevel_exempt != 0 && dev->seclevel_exempt != 1))
2290 return -EINVAL;
2291
2292 return 0;
2293 }
2294
2295 static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
2296 {
2297 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2298 struct net_device *dev = info->user_ptr[1];
2299 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2300 struct ieee802154_llsec_device dev_desc;
2301
2302 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2303 return -EOPNOTSUPP;
2304
2305 if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
2306 &dev_desc) < 0)
2307 return -EINVAL;
2308
2309 return rdev_add_device(rdev, wpan_dev, &dev_desc);
2310 }
2311
2312 static int nl802154_del_llsec_dev(struct sk_buff *skb, struct genl_info *info)
2313 {
2314 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2315 struct net_device *dev = info->user_ptr[1];
2316 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2317 struct nlattr *attrs[NL802154_DEV_ATTR_MAX + 1];
2318 __le64 extended_addr;
2319
2320 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2321 return -EOPNOTSUPP;
2322
2323 if (!info->attrs[NL802154_ATTR_SEC_DEVICE] ||
2324 nla_parse_nested_deprecated(attrs, NL802154_DEV_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVICE], nl802154_dev_policy, info->extack))
2325 return -EINVAL;
2326
2327 if (!attrs[NL802154_DEV_ATTR_EXTENDED_ADDR])
2328 return -EINVAL;
2329
2330 extended_addr = nla_get_le64(attrs[NL802154_DEV_ATTR_EXTENDED_ADDR]);
2331 return rdev_del_device(rdev, wpan_dev, extended_addr);
2332 }
2333
2334 static int nl802154_send_devkey(struct sk_buff *msg, u32 cmd, u32 portid,
2335 u32 seq, int flags,
2336 struct cfg802154_registered_device *rdev,
2337 struct net_device *dev, __le64 extended_addr,
2338 const struct ieee802154_llsec_device_key *devkey)
2339 {
2340 void *hdr;
2341 struct nlattr *nl_devkey, *nl_key_id;
2342
2343 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2344 if (!hdr)
2345 return -ENOBUFS;
2346
2347 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2348 goto nla_put_failure;
2349
2350 nl_devkey = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_DEVKEY);
2351 if (!nl_devkey)
2352 goto nla_put_failure;
2353
2354 if (nla_put_le64(msg, NL802154_DEVKEY_ATTR_EXTENDED_ADDR,
2355 extended_addr, NL802154_DEVKEY_ATTR_PAD) ||
2356 nla_put_u32(msg, NL802154_DEVKEY_ATTR_FRAME_COUNTER,
2357 devkey->frame_counter))
2358 goto nla_put_failure;
2359
2360 nl_key_id = nla_nest_start_noflag(msg, NL802154_DEVKEY_ATTR_ID);
2361 if (!nl_key_id)
2362 goto nla_put_failure;
2363
2364 if (ieee802154_llsec_send_key_id(msg, &devkey->key_id) < 0)
2365 goto nla_put_failure;
2366
2367 nla_nest_end(msg, nl_key_id);
2368 nla_nest_end(msg, nl_devkey);
2369 genlmsg_end(msg, hdr);
2370
2371 return 0;
2372
2373 nla_put_failure:
2374 genlmsg_cancel(msg, hdr);
2375 return -EMSGSIZE;
2376 }
2377
2378 static int
2379 nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
2380 {
2381 struct cfg802154_registered_device *rdev = NULL;
2382 struct ieee802154_llsec_device_key *kpos;
2383 struct ieee802154_llsec_device *dpos;
2384 struct ieee802154_llsec_table *table;
2385 struct wpan_dev *wpan_dev;
2386 int err;
2387
2388 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2389 if (err)
2390 return err;
2391
2392 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2393 err = skb->len;
2394 goto out_err;
2395 }
2396
2397 if (!wpan_dev->netdev) {
2398 err = -EINVAL;
2399 goto out_err;
2400 }
2401
2402 rdev_lock_llsec_table(rdev, wpan_dev);
2403 rdev_get_llsec_table(rdev, wpan_dev, &table);
2404
2405 /* TODO make it like station dump */
2406 if (cb->args[2])
2407 goto out;
2408
2409 /* TODO look if remove devkey and do some nested attribute */
2410 list_for_each_entry(dpos, &table->devices, list) {
2411 list_for_each_entry(kpos, &dpos->keys, list) {
2412 if (nl802154_send_devkey(skb,
2413 NL802154_CMD_NEW_SEC_LEVEL,
2414 NETLINK_CB(cb->skb).portid,
2415 cb->nlh->nlmsg_seq,
2416 NLM_F_MULTI, rdev,
2417 wpan_dev->netdev,
2418 dpos->hwaddr,
2419 kpos) < 0) {
2420 /* TODO */
2421 err = -EIO;
2422 rdev_unlock_llsec_table(rdev, wpan_dev);
2423 goto out_err;
2424 }
2425 }
2426 }
2427
2428 cb->args[2] = 1;
2429
2430 out:
2431 rdev_unlock_llsec_table(rdev, wpan_dev);
2432 err = skb->len;
2433 out_err:
2434 nl802154_finish_wpan_dev_dump(rdev);
2435
2436 return err;
2437 }
2438
2439 static const struct nla_policy nl802154_devkey_policy[NL802154_DEVKEY_ATTR_MAX + 1] = {
2440 [NL802154_DEVKEY_ATTR_FRAME_COUNTER] = { NLA_U32 },
2441 [NL802154_DEVKEY_ATTR_EXTENDED_ADDR] = { NLA_U64 },
2442 [NL802154_DEVKEY_ATTR_ID] = { NLA_NESTED },
2443 };
2444
2445 static int nl802154_add_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
2446 {
2447 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2448 struct net_device *dev = info->user_ptr[1];
2449 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2450 struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
2451 struct ieee802154_llsec_device_key key;
2452 __le64 extended_addr;
2453
2454 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2455 return -EOPNOTSUPP;
2456
2457 if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
2458 nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack) < 0)
2459 return -EINVAL;
2460
2461 if (!attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER] ||
2462 !attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
2463 return -EINVAL;
2464
2465 /* TODO change key.id ? */
2466 if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
2467 &key.key_id) < 0)
2468 return -ENOBUFS;
2469
2470 /* TODO be32 */
2471 key.frame_counter = nla_get_u32(attrs[NL802154_DEVKEY_ATTR_FRAME_COUNTER]);
2472 /* TODO change naming hwaddr -> extended_addr
2473 * check unique identifier short+pan OR extended_addr
2474 */
2475 extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
2476 return rdev_add_devkey(rdev, wpan_dev, extended_addr, &key);
2477 }
2478
2479 static int nl802154_del_llsec_devkey(struct sk_buff *skb, struct genl_info *info)
2480 {
2481 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2482 struct net_device *dev = info->user_ptr[1];
2483 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2484 struct nlattr *attrs[NL802154_DEVKEY_ATTR_MAX + 1];
2485 struct ieee802154_llsec_device_key key;
2486 __le64 extended_addr;
2487
2488 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2489 return -EOPNOTSUPP;
2490
2491 if (!info->attrs[NL802154_ATTR_SEC_DEVKEY] ||
2492 nla_parse_nested_deprecated(attrs, NL802154_DEVKEY_ATTR_MAX, info->attrs[NL802154_ATTR_SEC_DEVKEY], nl802154_devkey_policy, info->extack))
2493 return -EINVAL;
2494
2495 if (!attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR])
2496 return -EINVAL;
2497
2498 /* TODO change key.id ? */
2499 if (ieee802154_llsec_parse_key_id(attrs[NL802154_DEVKEY_ATTR_ID],
2500 &key.key_id) < 0)
2501 return -ENOBUFS;
2502
2503 /* TODO change naming hwaddr -> extended_addr
2504 * check unique identifier short+pan OR extended_addr
2505 */
2506 extended_addr = nla_get_le64(attrs[NL802154_DEVKEY_ATTR_EXTENDED_ADDR]);
2507 return rdev_del_devkey(rdev, wpan_dev, extended_addr, &key);
2508 }
2509
2510 static int nl802154_send_seclevel(struct sk_buff *msg, u32 cmd, u32 portid,
2511 u32 seq, int flags,
2512 struct cfg802154_registered_device *rdev,
2513 struct net_device *dev,
2514 const struct ieee802154_llsec_seclevel *sl)
2515 {
2516 void *hdr;
2517 struct nlattr *nl_seclevel;
2518
2519 hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
2520 if (!hdr)
2521 return -ENOBUFS;
2522
2523 if (nla_put_u32(msg, NL802154_ATTR_IFINDEX, dev->ifindex))
2524 goto nla_put_failure;
2525
2526 nl_seclevel = nla_nest_start_noflag(msg, NL802154_ATTR_SEC_LEVEL);
2527 if (!nl_seclevel)
2528 goto nla_put_failure;
2529
2530 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_FRAME, sl->frame_type) ||
2531 nla_put_u32(msg, NL802154_SECLEVEL_ATTR_LEVELS, sl->sec_levels) ||
2532 nla_put_u8(msg, NL802154_SECLEVEL_ATTR_DEV_OVERRIDE,
2533 sl->device_override))
2534 goto nla_put_failure;
2535
2536 if (sl->frame_type == NL802154_FRAME_CMD) {
2537 if (nla_put_u32(msg, NL802154_SECLEVEL_ATTR_CMD_FRAME,
2538 sl->cmd_frame_id))
2539 goto nla_put_failure;
2540 }
2541
2542 nla_nest_end(msg, nl_seclevel);
2543 genlmsg_end(msg, hdr);
2544
2545 return 0;
2546
2547 nla_put_failure:
2548 genlmsg_cancel(msg, hdr);
2549 return -EMSGSIZE;
2550 }
2551
2552 static int
2553 nl802154_dump_llsec_seclevel(struct sk_buff *skb, struct netlink_callback *cb)
2554 {
2555 struct cfg802154_registered_device *rdev = NULL;
2556 struct ieee802154_llsec_seclevel *sl;
2557 struct ieee802154_llsec_table *table;
2558 struct wpan_dev *wpan_dev;
2559 int err;
2560
2561 err = nl802154_prepare_wpan_dev_dump(skb, cb, &rdev, &wpan_dev);
2562 if (err)
2563 return err;
2564
2565 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
2566 err = skb->len;
2567 goto out_err;
2568 }
2569
2570 if (!wpan_dev->netdev) {
2571 err = -EINVAL;
2572 goto out_err;
2573 }
2574
2575 rdev_lock_llsec_table(rdev, wpan_dev);
2576 rdev_get_llsec_table(rdev, wpan_dev, &table);
2577
2578 /* TODO make it like station dump */
2579 if (cb->args[2])
2580 goto out;
2581
2582 list_for_each_entry(sl, &table->security_levels, list) {
2583 if (nl802154_send_seclevel(skb, NL802154_CMD_NEW_SEC_LEVEL,
2584 NETLINK_CB(cb->skb).portid,
2585 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2586 rdev, wpan_dev->netdev, sl) < 0) {
2587 /* TODO */
2588 err = -EIO;
2589 rdev_unlock_llsec_table(rdev, wpan_dev);
2590 goto out_err;
2591 }
2592 }
2593
2594 cb->args[2] = 1;
2595
2596 out:
2597 rdev_unlock_llsec_table(rdev, wpan_dev);
2598 err = skb->len;
2599 out_err:
2600 nl802154_finish_wpan_dev_dump(rdev);
2601
2602 return err;
2603 }
2604
2605 static const struct nla_policy nl802154_seclevel_policy[NL802154_SECLEVEL_ATTR_MAX + 1] = {
2606 [NL802154_SECLEVEL_ATTR_LEVELS] = { .type = NLA_U8 },
2607 [NL802154_SECLEVEL_ATTR_FRAME] = { .type = NLA_U32 },
2608 [NL802154_SECLEVEL_ATTR_CMD_FRAME] = { .type = NLA_U32 },
2609 [NL802154_SECLEVEL_ATTR_DEV_OVERRIDE] = { .type = NLA_U8 },
2610 };
2611
2612 static int
2613 llsec_parse_seclevel(struct nlattr *nla, struct ieee802154_llsec_seclevel *sl)
2614 {
2615 struct nlattr *attrs[NL802154_SECLEVEL_ATTR_MAX + 1];
2616
2617 if (!nla || nla_parse_nested_deprecated(attrs, NL802154_SECLEVEL_ATTR_MAX, nla, nl802154_seclevel_policy, NULL))
2618 return -EINVAL;
2619
2620 memset(sl, 0, sizeof(*sl));
2621
2622 if (!attrs[NL802154_SECLEVEL_ATTR_LEVELS] ||
2623 !attrs[NL802154_SECLEVEL_ATTR_FRAME] ||
2624 !attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE])
2625 return -EINVAL;
2626
2627 sl->sec_levels = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_LEVELS]);
2628 sl->frame_type = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_FRAME]);
2629 sl->device_override = nla_get_u8(attrs[NL802154_SECLEVEL_ATTR_DEV_OVERRIDE]);
2630 if (sl->frame_type > NL802154_FRAME_MAX ||
2631 (sl->device_override != 0 && sl->device_override != 1))
2632 return -EINVAL;
2633
2634 if (sl->frame_type == NL802154_FRAME_CMD) {
2635 if (!attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME])
2636 return -EINVAL;
2637
2638 sl->cmd_frame_id = nla_get_u32(attrs[NL802154_SECLEVEL_ATTR_CMD_FRAME]);
2639 if (sl->cmd_frame_id > NL802154_CMD_FRAME_MAX)
2640 return -EINVAL;
2641 }
2642
2643 return 0;
2644 }
2645
2646 static int nl802154_add_llsec_seclevel(struct sk_buff *skb,
2647 struct genl_info *info)
2648 {
2649 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2650 struct net_device *dev = info->user_ptr[1];
2651 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2652 struct ieee802154_llsec_seclevel sl;
2653
2654 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2655 return -EOPNOTSUPP;
2656
2657 if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2658 &sl) < 0)
2659 return -EINVAL;
2660
2661 return rdev_add_seclevel(rdev, wpan_dev, &sl);
2662 }
2663
2664 static int nl802154_del_llsec_seclevel(struct sk_buff *skb,
2665 struct genl_info *info)
2666 {
2667 struct cfg802154_registered_device *rdev = info->user_ptr[0];
2668 struct net_device *dev = info->user_ptr[1];
2669 struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
2670 struct ieee802154_llsec_seclevel sl;
2671
2672 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
2673 return -EOPNOTSUPP;
2674
2675 if (llsec_parse_seclevel(info->attrs[NL802154_ATTR_SEC_LEVEL],
2676 &sl) < 0)
2677 return -EINVAL;
2678
2679 return rdev_del_seclevel(rdev, wpan_dev, &sl);
2680 }
2681 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
2682
2683 #define NL802154_FLAG_NEED_WPAN_PHY 0x01
2684 #define NL802154_FLAG_NEED_NETDEV 0x02
2685 #define NL802154_FLAG_NEED_RTNL 0x04
2686 #define NL802154_FLAG_CHECK_NETDEV_UP 0x08
2687 #define NL802154_FLAG_NEED_WPAN_DEV 0x10
2688
2689 static int nl802154_pre_doit(const struct genl_split_ops *ops,
2690 struct sk_buff *skb,
2691 struct genl_info *info)
2692 {
2693 struct cfg802154_registered_device *rdev;
2694 struct wpan_dev *wpan_dev;
2695 struct net_device *dev;
2696 bool rtnl = ops->internal_flags & NL802154_FLAG_NEED_RTNL;
2697
2698 if (rtnl)
2699 rtnl_lock();
2700
2701 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_PHY) {
2702 rdev = cfg802154_get_dev_from_info(genl_info_net(info), info);
2703 if (IS_ERR(rdev)) {
2704 if (rtnl)
2705 rtnl_unlock();
2706 return PTR_ERR(rdev);
2707 }
2708 info->user_ptr[0] = rdev;
2709 } else if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV ||
2710 ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2711 ASSERT_RTNL();
2712 wpan_dev = __cfg802154_wpan_dev_from_attrs(genl_info_net(info),
2713 info->attrs);
2714 if (IS_ERR(wpan_dev)) {
2715 if (rtnl)
2716 rtnl_unlock();
2717 return PTR_ERR(wpan_dev);
2718 }
2719
2720 dev = wpan_dev->netdev;
2721 rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
2722
2723 if (ops->internal_flags & NL802154_FLAG_NEED_NETDEV) {
2724 if (!dev) {
2725 if (rtnl)
2726 rtnl_unlock();
2727 return -EINVAL;
2728 }
2729
2730 info->user_ptr[1] = dev;
2731 } else {
2732 info->user_ptr[1] = wpan_dev;
2733 }
2734
2735 if (dev) {
2736 if (ops->internal_flags & NL802154_FLAG_CHECK_NETDEV_UP &&
2737 !netif_running(dev)) {
2738 if (rtnl)
2739 rtnl_unlock();
2740 return -ENETDOWN;
2741 }
2742
2743 dev_hold(dev);
2744 }
2745
2746 info->user_ptr[0] = rdev;
2747 }
2748
2749 return 0;
2750 }
2751
2752 static void nl802154_post_doit(const struct genl_split_ops *ops,
2753 struct sk_buff *skb,
2754 struct genl_info *info)
2755 {
2756 if (info->user_ptr[1]) {
2757 if (ops->internal_flags & NL802154_FLAG_NEED_WPAN_DEV) {
2758 struct wpan_dev *wpan_dev = info->user_ptr[1];
2759
2760 dev_put(wpan_dev->netdev);
2761 } else {
2762 dev_put(info->user_ptr[1]);
2763 }
2764 }
2765
2766 if (ops->internal_flags & NL802154_FLAG_NEED_RTNL)
2767 rtnl_unlock();
2768 }
2769
2770 static const struct genl_ops nl802154_ops[] = {
2771 {
2772 .cmd = NL802154_CMD_GET_WPAN_PHY,
2773 .validate = GENL_DONT_VALIDATE_STRICT |
2774 GENL_DONT_VALIDATE_DUMP_STRICT,
2775 .doit = nl802154_get_wpan_phy,
2776 .dumpit = nl802154_dump_wpan_phy,
2777 .done = nl802154_dump_wpan_phy_done,
2778 /* can be retrieved by unprivileged users */
2779 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2780 NL802154_FLAG_NEED_RTNL,
2781 },
2782 {
2783 .cmd = NL802154_CMD_GET_INTERFACE,
2784 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2785 .doit = nl802154_get_interface,
2786 .dumpit = nl802154_dump_interface,
2787 /* can be retrieved by unprivileged users */
2788 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2789 NL802154_FLAG_NEED_RTNL,
2790 },
2791 {
2792 .cmd = NL802154_CMD_NEW_INTERFACE,
2793 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2794 .doit = nl802154_new_interface,
2795 .flags = GENL_ADMIN_PERM,
2796 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2797 NL802154_FLAG_NEED_RTNL,
2798 },
2799 {
2800 .cmd = NL802154_CMD_DEL_INTERFACE,
2801 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2802 .doit = nl802154_del_interface,
2803 .flags = GENL_ADMIN_PERM,
2804 .internal_flags = NL802154_FLAG_NEED_WPAN_DEV |
2805 NL802154_FLAG_NEED_RTNL,
2806 },
2807 {
2808 .cmd = NL802154_CMD_SET_CHANNEL,
2809 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2810 .doit = nl802154_set_channel,
2811 .flags = GENL_ADMIN_PERM,
2812 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2813 NL802154_FLAG_NEED_RTNL,
2814 },
2815 {
2816 .cmd = NL802154_CMD_SET_CCA_MODE,
2817 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2818 .doit = nl802154_set_cca_mode,
2819 .flags = GENL_ADMIN_PERM,
2820 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2821 NL802154_FLAG_NEED_RTNL,
2822 },
2823 {
2824 .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
2825 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2826 .doit = nl802154_set_cca_ed_level,
2827 .flags = GENL_ADMIN_PERM,
2828 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2829 NL802154_FLAG_NEED_RTNL,
2830 },
2831 {
2832 .cmd = NL802154_CMD_SET_TX_POWER,
2833 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2834 .doit = nl802154_set_tx_power,
2835 .flags = GENL_ADMIN_PERM,
2836 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2837 NL802154_FLAG_NEED_RTNL,
2838 },
2839 {
2840 .cmd = NL802154_CMD_SET_WPAN_PHY_NETNS,
2841 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2842 .doit = nl802154_wpan_phy_netns,
2843 .flags = GENL_ADMIN_PERM,
2844 .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
2845 NL802154_FLAG_NEED_RTNL,
2846 },
2847 {
2848 .cmd = NL802154_CMD_SET_PAN_ID,
2849 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2850 .doit = nl802154_set_pan_id,
2851 .flags = GENL_ADMIN_PERM,
2852 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2853 NL802154_FLAG_NEED_RTNL,
2854 },
2855 {
2856 .cmd = NL802154_CMD_SET_SHORT_ADDR,
2857 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2858 .doit = nl802154_set_short_addr,
2859 .flags = GENL_ADMIN_PERM,
2860 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2861 NL802154_FLAG_NEED_RTNL,
2862 },
2863 {
2864 .cmd = NL802154_CMD_SET_BACKOFF_EXPONENT,
2865 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2866 .doit = nl802154_set_backoff_exponent,
2867 .flags = GENL_ADMIN_PERM,
2868 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2869 NL802154_FLAG_NEED_RTNL,
2870 },
2871 {
2872 .cmd = NL802154_CMD_SET_MAX_CSMA_BACKOFFS,
2873 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2874 .doit = nl802154_set_max_csma_backoffs,
2875 .flags = GENL_ADMIN_PERM,
2876 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2877 NL802154_FLAG_NEED_RTNL,
2878 },
2879 {
2880 .cmd = NL802154_CMD_SET_MAX_FRAME_RETRIES,
2881 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2882 .doit = nl802154_set_max_frame_retries,
2883 .flags = GENL_ADMIN_PERM,
2884 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2885 NL802154_FLAG_NEED_RTNL,
2886 },
2887 {
2888 .cmd = NL802154_CMD_SET_LBT_MODE,
2889 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2890 .doit = nl802154_set_lbt_mode,
2891 .flags = GENL_ADMIN_PERM,
2892 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2893 NL802154_FLAG_NEED_RTNL,
2894 },
2895 {
2896 .cmd = NL802154_CMD_SET_ACKREQ_DEFAULT,
2897 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2898 .doit = nl802154_set_ackreq_default,
2899 .flags = GENL_ADMIN_PERM,
2900 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2901 NL802154_FLAG_NEED_RTNL,
2902 },
2903 {
2904 .cmd = NL802154_CMD_TRIGGER_SCAN,
2905 .doit = nl802154_trigger_scan,
2906 .flags = GENL_ADMIN_PERM,
2907 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2908 NL802154_FLAG_CHECK_NETDEV_UP |
2909 NL802154_FLAG_NEED_RTNL,
2910 },
2911 {
2912 .cmd = NL802154_CMD_ABORT_SCAN,
2913 .doit = nl802154_abort_scan,
2914 .flags = GENL_ADMIN_PERM,
2915 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2916 NL802154_FLAG_CHECK_NETDEV_UP |
2917 NL802154_FLAG_NEED_RTNL,
2918 },
2919 {
2920 .cmd = NL802154_CMD_SEND_BEACONS,
2921 .doit = nl802154_send_beacons,
2922 .flags = GENL_ADMIN_PERM,
2923 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2924 NL802154_FLAG_CHECK_NETDEV_UP |
2925 NL802154_FLAG_NEED_RTNL,
2926 },
2927 {
2928 .cmd = NL802154_CMD_STOP_BEACONS,
2929 .doit = nl802154_stop_beacons,
2930 .flags = GENL_ADMIN_PERM,
2931 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2932 NL802154_FLAG_CHECK_NETDEV_UP |
2933 NL802154_FLAG_NEED_RTNL,
2934 },
2935 {
2936 .cmd = NL802154_CMD_ASSOCIATE,
2937 .doit = nl802154_associate,
2938 .flags = GENL_ADMIN_PERM,
2939 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2940 NL802154_FLAG_CHECK_NETDEV_UP |
2941 NL802154_FLAG_NEED_RTNL,
2942 },
2943 {
2944 .cmd = NL802154_CMD_DISASSOCIATE,
2945 .doit = nl802154_disassociate,
2946 .flags = GENL_ADMIN_PERM,
2947 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2948 NL802154_FLAG_CHECK_NETDEV_UP |
2949 NL802154_FLAG_NEED_RTNL,
2950 },
2951 {
2952 .cmd = NL802154_CMD_SET_MAX_ASSOCIATIONS,
2953 .doit = nl802154_set_max_associations,
2954 .flags = GENL_ADMIN_PERM,
2955 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2956 NL802154_FLAG_NEED_RTNL,
2957 },
2958 {
2959 .cmd = NL802154_CMD_LIST_ASSOCIATIONS,
2960 .dumpit = nl802154_list_associations,
2961 /* can be retrieved by unprivileged users */
2962 },
2963 #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
2964 {
2965 .cmd = NL802154_CMD_SET_SEC_PARAMS,
2966 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2967 .doit = nl802154_set_llsec_params,
2968 .flags = GENL_ADMIN_PERM,
2969 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2970 NL802154_FLAG_NEED_RTNL,
2971 },
2972 {
2973 .cmd = NL802154_CMD_GET_SEC_KEY,
2974 .validate = GENL_DONT_VALIDATE_STRICT |
2975 GENL_DONT_VALIDATE_DUMP_STRICT,
2976 /* TODO .doit by matching key id? */
2977 .dumpit = nl802154_dump_llsec_key,
2978 .flags = GENL_ADMIN_PERM,
2979 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2980 NL802154_FLAG_NEED_RTNL,
2981 },
2982 {
2983 .cmd = NL802154_CMD_NEW_SEC_KEY,
2984 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2985 .doit = nl802154_add_llsec_key,
2986 .flags = GENL_ADMIN_PERM,
2987 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2988 NL802154_FLAG_NEED_RTNL,
2989 },
2990 {
2991 .cmd = NL802154_CMD_DEL_SEC_KEY,
2992 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
2993 .doit = nl802154_del_llsec_key,
2994 .flags = GENL_ADMIN_PERM,
2995 .internal_flags = NL802154_FLAG_NEED_NETDEV |
2996 NL802154_FLAG_NEED_RTNL,
2997 },
2998 /* TODO unique identifier must short+pan OR extended_addr */
2999 {
3000 .cmd = NL802154_CMD_GET_SEC_DEV,
3001 .validate = GENL_DONT_VALIDATE_STRICT |
3002 GENL_DONT_VALIDATE_DUMP_STRICT,
3003 /* TODO .doit by matching extended_addr? */
3004 .dumpit = nl802154_dump_llsec_dev,
3005 .flags = GENL_ADMIN_PERM,
3006 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3007 NL802154_FLAG_NEED_RTNL,
3008 },
3009 {
3010 .cmd = NL802154_CMD_NEW_SEC_DEV,
3011 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3012 .doit = nl802154_add_llsec_dev,
3013 .flags = GENL_ADMIN_PERM,
3014 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3015 NL802154_FLAG_NEED_RTNL,
3016 },
3017 {
3018 .cmd = NL802154_CMD_DEL_SEC_DEV,
3019 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3020 .doit = nl802154_del_llsec_dev,
3021 .flags = GENL_ADMIN_PERM,
3022 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3023 NL802154_FLAG_NEED_RTNL,
3024 },
3025 /* TODO remove complete devkey, put it as nested? */
3026 {
3027 .cmd = NL802154_CMD_GET_SEC_DEVKEY,
3028 .validate = GENL_DONT_VALIDATE_STRICT |
3029 GENL_DONT_VALIDATE_DUMP_STRICT,
3030 /* TODO doit by matching ??? */
3031 .dumpit = nl802154_dump_llsec_devkey,
3032 .flags = GENL_ADMIN_PERM,
3033 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3034 NL802154_FLAG_NEED_RTNL,
3035 },
3036 {
3037 .cmd = NL802154_CMD_NEW_SEC_DEVKEY,
3038 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3039 .doit = nl802154_add_llsec_devkey,
3040 .flags = GENL_ADMIN_PERM,
3041 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3042 NL802154_FLAG_NEED_RTNL,
3043 },
3044 {
3045 .cmd = NL802154_CMD_DEL_SEC_DEVKEY,
3046 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3047 .doit = nl802154_del_llsec_devkey,
3048 .flags = GENL_ADMIN_PERM,
3049 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3050 NL802154_FLAG_NEED_RTNL,
3051 },
3052 {
3053 .cmd = NL802154_CMD_GET_SEC_LEVEL,
3054 .validate = GENL_DONT_VALIDATE_STRICT |
3055 GENL_DONT_VALIDATE_DUMP_STRICT,
3056 /* TODO .doit by matching frame_type? */
3057 .dumpit = nl802154_dump_llsec_seclevel,
3058 .flags = GENL_ADMIN_PERM,
3059 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3060 NL802154_FLAG_NEED_RTNL,
3061 },
3062 {
3063 .cmd = NL802154_CMD_NEW_SEC_LEVEL,
3064 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3065 .doit = nl802154_add_llsec_seclevel,
3066 .flags = GENL_ADMIN_PERM,
3067 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3068 NL802154_FLAG_NEED_RTNL,
3069 },
3070 {
3071 .cmd = NL802154_CMD_DEL_SEC_LEVEL,
3072 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3073 /* TODO match frame_type only? */
3074 .doit = nl802154_del_llsec_seclevel,
3075 .flags = GENL_ADMIN_PERM,
3076 .internal_flags = NL802154_FLAG_NEED_NETDEV |
3077 NL802154_FLAG_NEED_RTNL,
3078 },
3079 #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
3080 };
3081
3082 static struct genl_family nl802154_fam __ro_after_init = {
3083 .name = NL802154_GENL_NAME, /* have users key off the name instead */
3084 .hdrsize = 0, /* no private header */
3085 .version = 1, /* no particular meaning now */
3086 .maxattr = NL802154_ATTR_MAX,
3087 .policy = nl802154_policy,
3088 .netnsok = true,
3089 .pre_doit = nl802154_pre_doit,
3090 .post_doit = nl802154_post_doit,
3091 .module = THIS_MODULE,
3092 .ops = nl802154_ops,
3093 .n_ops = ARRAY_SIZE(nl802154_ops),
3094 .resv_start_op = NL802154_CMD_DEL_SEC_LEVEL + 1,
3095 .mcgrps = nl802154_mcgrps,
3096 .n_mcgrps = ARRAY_SIZE(nl802154_mcgrps),
3097 };
3098
3099 /* initialisation/exit functions */
3100 int __init nl802154_init(void)
3101 {
3102 return genl_register_family(&nl802154_fam);
3103 }
3104
3105 void nl802154_exit(void)
3106 {
3107 genl_unregister_family(&nl802154_fam);
3108 }
Kernel DRM miscellaneous fixes and cross-tree changes