1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) 2007, 2008, 2009 Siemens AG |
4 | * |
5 | * Written by: |
6 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> |
7 | */ |
8 | |
9 | #ifndef __NET_CFG802154_H |
10 | #define __NET_CFG802154_H |
11 | |
12 | #include <linux/ieee802154.h> |
13 | #include <linux/netdevice.h> |
14 | #include <linux/spinlock.h> |
15 | #include <linux/bug.h> |
16 | |
17 | #include <net/nl802154.h> |
18 | |
19 | struct wpan_phy; |
20 | struct wpan_phy_cca; |
21 | struct cfg802154_scan_request; |
22 | struct cfg802154_beacon_request; |
23 | struct ieee802154_addr; |
24 | |
25 | #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL |
26 | struct ieee802154_llsec_device_key; |
27 | struct ieee802154_llsec_seclevel; |
28 | struct ieee802154_llsec_params; |
29 | struct ieee802154_llsec_device; |
30 | struct ieee802154_llsec_table; |
31 | struct ieee802154_llsec_key_id; |
32 | struct ieee802154_llsec_key; |
33 | #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ |
34 | |
35 | struct cfg802154_ops { |
36 | struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, |
37 | const char *name, |
38 | unsigned char name_assign_type, |
39 | int type); |
40 | void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy, |
41 | struct net_device *dev); |
42 | int (*suspend)(struct wpan_phy *wpan_phy); |
43 | int (*resume)(struct wpan_phy *wpan_phy); |
44 | int (*add_virtual_intf)(struct wpan_phy *wpan_phy, |
45 | const char *name, |
46 | unsigned char name_assign_type, |
47 | enum nl802154_iftype type, |
48 | __le64 extended_addr); |
49 | int (*del_virtual_intf)(struct wpan_phy *wpan_phy, |
50 | struct wpan_dev *wpan_dev); |
51 | int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel); |
52 | int (*set_cca_mode)(struct wpan_phy *wpan_phy, |
53 | const struct wpan_phy_cca *cca); |
54 | int (*set_cca_ed_level)(struct wpan_phy *wpan_phy, s32 ed_level); |
55 | int (*set_tx_power)(struct wpan_phy *wpan_phy, s32 power); |
56 | int (*set_pan_id)(struct wpan_phy *wpan_phy, |
57 | struct wpan_dev *wpan_dev, __le16 pan_id); |
58 | int (*set_short_addr)(struct wpan_phy *wpan_phy, |
59 | struct wpan_dev *wpan_dev, __le16 short_addr); |
60 | int (*set_backoff_exponent)(struct wpan_phy *wpan_phy, |
61 | struct wpan_dev *wpan_dev, u8 min_be, |
62 | u8 max_be); |
63 | int (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy, |
64 | struct wpan_dev *wpan_dev, |
65 | u8 max_csma_backoffs); |
66 | int (*set_max_frame_retries)(struct wpan_phy *wpan_phy, |
67 | struct wpan_dev *wpan_dev, |
68 | s8 max_frame_retries); |
69 | int (*set_lbt_mode)(struct wpan_phy *wpan_phy, |
70 | struct wpan_dev *wpan_dev, bool mode); |
71 | int (*set_ackreq_default)(struct wpan_phy *wpan_phy, |
72 | struct wpan_dev *wpan_dev, bool ackreq); |
73 | int (*trigger_scan)(struct wpan_phy *wpan_phy, |
74 | struct cfg802154_scan_request *request); |
75 | int (*abort_scan)(struct wpan_phy *wpan_phy, |
76 | struct wpan_dev *wpan_dev); |
77 | int (*send_beacons)(struct wpan_phy *wpan_phy, |
78 | struct cfg802154_beacon_request *request); |
79 | int (*stop_beacons)(struct wpan_phy *wpan_phy, |
80 | struct wpan_dev *wpan_dev); |
81 | int (*associate)(struct wpan_phy *wpan_phy, |
82 | struct wpan_dev *wpan_dev, |
83 | struct ieee802154_addr *coord); |
84 | int (*disassociate)(struct wpan_phy *wpan_phy, |
85 | struct wpan_dev *wpan_dev, |
86 | struct ieee802154_addr *target); |
87 | #ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL |
88 | void (*get_llsec_table)(struct wpan_phy *wpan_phy, |
89 | struct wpan_dev *wpan_dev, |
90 | struct ieee802154_llsec_table **table); |
91 | void (*lock_llsec_table)(struct wpan_phy *wpan_phy, |
92 | struct wpan_dev *wpan_dev); |
93 | void (*unlock_llsec_table)(struct wpan_phy *wpan_phy, |
94 | struct wpan_dev *wpan_dev); |
95 | /* TODO remove locking/get table callbacks, this is part of the |
96 | * nl802154 interface and should be accessible from ieee802154 layer. |
97 | */ |
98 | int (*get_llsec_params)(struct wpan_phy *wpan_phy, |
99 | struct wpan_dev *wpan_dev, |
100 | struct ieee802154_llsec_params *params); |
101 | int (*set_llsec_params)(struct wpan_phy *wpan_phy, |
102 | struct wpan_dev *wpan_dev, |
103 | const struct ieee802154_llsec_params *params, |
104 | int changed); |
105 | int (*add_llsec_key)(struct wpan_phy *wpan_phy, |
106 | struct wpan_dev *wpan_dev, |
107 | const struct ieee802154_llsec_key_id *id, |
108 | const struct ieee802154_llsec_key *key); |
109 | int (*del_llsec_key)(struct wpan_phy *wpan_phy, |
110 | struct wpan_dev *wpan_dev, |
111 | const struct ieee802154_llsec_key_id *id); |
112 | int (*add_seclevel)(struct wpan_phy *wpan_phy, |
113 | struct wpan_dev *wpan_dev, |
114 | const struct ieee802154_llsec_seclevel *sl); |
115 | int (*del_seclevel)(struct wpan_phy *wpan_phy, |
116 | struct wpan_dev *wpan_dev, |
117 | const struct ieee802154_llsec_seclevel *sl); |
118 | int (*add_device)(struct wpan_phy *wpan_phy, |
119 | struct wpan_dev *wpan_dev, |
120 | const struct ieee802154_llsec_device *dev); |
121 | int (*del_device)(struct wpan_phy *wpan_phy, |
122 | struct wpan_dev *wpan_dev, __le64 extended_addr); |
123 | int (*add_devkey)(struct wpan_phy *wpan_phy, |
124 | struct wpan_dev *wpan_dev, |
125 | __le64 extended_addr, |
126 | const struct ieee802154_llsec_device_key *key); |
127 | int (*del_devkey)(struct wpan_phy *wpan_phy, |
128 | struct wpan_dev *wpan_dev, |
129 | __le64 extended_addr, |
130 | const struct ieee802154_llsec_device_key *key); |
131 | #endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */ |
132 | }; |
133 | |
134 | static inline bool |
135 | wpan_phy_supported_bool(bool b, enum nl802154_supported_bool_states st) |
136 | { |
137 | switch (st) { |
138 | case NL802154_SUPPORTED_BOOL_TRUE: |
139 | return b; |
140 | case NL802154_SUPPORTED_BOOL_FALSE: |
141 | return !b; |
142 | case NL802154_SUPPORTED_BOOL_BOTH: |
143 | return true; |
144 | default: |
145 | WARN_ON(1); |
146 | } |
147 | |
148 | return false; |
149 | } |
150 | |
151 | struct wpan_phy_supported { |
152 | u32 channels[IEEE802154_MAX_PAGE + 1], |
153 | cca_modes, cca_opts, iftypes; |
154 | enum nl802154_supported_bool_states lbt; |
155 | u8 min_minbe, max_minbe, min_maxbe, max_maxbe, |
156 | min_csma_backoffs, max_csma_backoffs; |
157 | s8 min_frame_retries, max_frame_retries; |
158 | size_t tx_powers_size, cca_ed_levels_size; |
159 | const s32 *tx_powers, *cca_ed_levels; |
160 | }; |
161 | |
162 | struct wpan_phy_cca { |
163 | enum nl802154_cca_modes mode; |
164 | enum nl802154_cca_opts opt; |
165 | }; |
166 | |
167 | static inline bool |
168 | wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b) |
169 | { |
170 | if (a->mode != b->mode) |
171 | return false; |
172 | |
173 | if (a->mode == NL802154_CCA_ENERGY_CARRIER) |
174 | return a->opt == b->opt; |
175 | |
176 | return true; |
177 | } |
178 | |
179 | /** |
180 | * enum wpan_phy_flags - WPAN PHY state flags |
181 | * @WPAN_PHY_FLAG_TXPOWER: Indicates that transceiver will support |
182 | * transmit power setting. |
183 | * @WPAN_PHY_FLAG_CCA_ED_LEVEL: Indicates that transceiver will support cca ed |
184 | * level setting. |
185 | * @WPAN_PHY_FLAG_CCA_MODE: Indicates that transceiver will support cca mode |
186 | * setting. |
187 | * @WPAN_PHY_FLAG_STATE_QUEUE_STOPPED: Indicates that the transmit queue was |
188 | * temporarily stopped. |
189 | * @WPAN_PHY_FLAG_DATAGRAMS_ONLY: Indicates that transceiver is only able to |
190 | * send/receive datagrams. |
191 | */ |
192 | enum wpan_phy_flags { |
193 | WPAN_PHY_FLAG_TXPOWER = BIT(1), |
194 | WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2), |
195 | WPAN_PHY_FLAG_CCA_MODE = BIT(3), |
196 | WPAN_PHY_FLAG_STATE_QUEUE_STOPPED = BIT(4), |
197 | WPAN_PHY_FLAG_DATAGRAMS_ONLY = BIT(5), |
198 | }; |
199 | |
200 | struct wpan_phy { |
201 | /* If multiple wpan_phys are registered and you're handed e.g. |
202 | * a regular netdev with assigned ieee802154_ptr, you won't |
203 | * know whether it points to a wpan_phy your driver has registered |
204 | * or not. Assign this to something global to your driver to |
205 | * help determine whether you own this wpan_phy or not. |
206 | */ |
207 | const void *privid; |
208 | |
209 | unsigned long flags; |
210 | |
211 | /* |
212 | * This is a PIB according to 802.15.4-2011. |
213 | * We do not provide timing-related variables, as they |
214 | * aren't used outside of driver |
215 | */ |
216 | u8 current_channel; |
217 | u8 current_page; |
218 | struct wpan_phy_supported supported; |
219 | /* current transmit_power in mBm */ |
220 | s32 transmit_power; |
221 | struct wpan_phy_cca cca; |
222 | |
223 | __le64 perm_extended_addr; |
224 | |
225 | /* current cca ed threshold in mBm */ |
226 | s32 cca_ed_level; |
227 | |
228 | /* PHY depended MAC PIB values */ |
229 | |
230 | /* 802.15.4 acronym: Tdsym in nsec */ |
231 | u32 symbol_duration; |
232 | /* lifs and sifs periods timing */ |
233 | u16 lifs_period; |
234 | u16 sifs_period; |
235 | |
236 | struct device dev; |
237 | |
238 | /* the network namespace this phy lives in currently */ |
239 | possible_net_t _net; |
240 | |
241 | /* Transmission monitoring and control */ |
242 | spinlock_t queue_lock; |
243 | atomic_t ongoing_txs; |
244 | atomic_t hold_txs; |
245 | wait_queue_head_t sync_txq; |
246 | |
247 | /* Current filtering level on reception. |
248 | * Only allowed to be changed if phy is not operational. |
249 | */ |
250 | enum ieee802154_filtering_level filtering; |
251 | |
252 | char priv[] __aligned(NETDEV_ALIGN); |
253 | }; |
254 | |
255 | static inline struct net *wpan_phy_net(struct wpan_phy *wpan_phy) |
256 | { |
257 | return read_pnet(pnet: &wpan_phy->_net); |
258 | } |
259 | |
260 | static inline void wpan_phy_net_set(struct wpan_phy *wpan_phy, struct net *net) |
261 | { |
262 | write_pnet(pnet: &wpan_phy->_net, net); |
263 | } |
264 | |
265 | static inline bool ieee802154_chan_is_valid(struct wpan_phy *phy, |
266 | u8 page, u8 channel) |
267 | { |
268 | if (page > IEEE802154_MAX_PAGE || |
269 | channel > IEEE802154_MAX_CHANNEL || |
270 | !(phy->supported.channels[page] & BIT(channel))) |
271 | return false; |
272 | |
273 | return true; |
274 | } |
275 | |
276 | /** |
277 | * struct ieee802154_addr - IEEE802.15.4 device address |
278 | * @mode: Address mode from frame header. Can be one of: |
279 | * - @IEEE802154_ADDR_NONE |
280 | * - @IEEE802154_ADDR_SHORT |
281 | * - @IEEE802154_ADDR_LONG |
282 | * @pan_id: The PAN ID this address belongs to |
283 | * @short_addr: address if @mode is @IEEE802154_ADDR_SHORT |
284 | * @extended_addr: address if @mode is @IEEE802154_ADDR_LONG |
285 | */ |
286 | struct ieee802154_addr { |
287 | u8 mode; |
288 | __le16 pan_id; |
289 | union { |
290 | __le16 short_addr; |
291 | __le64 extended_addr; |
292 | }; |
293 | }; |
294 | |
295 | /** |
296 | * struct ieee802154_coord_desc - Coordinator descriptor |
297 | * @addr: PAN ID and coordinator address |
298 | * @page: page this coordinator is using |
299 | * @channel: channel this coordinator is using |
300 | * @superframe_spec: SuperFrame specification as received |
301 | * @link_quality: link quality indicator at which the beacon was received |
302 | * @gts_permit: the coordinator accepts GTS requests |
303 | */ |
304 | struct ieee802154_coord_desc { |
305 | struct ieee802154_addr addr; |
306 | u8 page; |
307 | u8 channel; |
308 | u16 superframe_spec; |
309 | u8 link_quality; |
310 | bool gts_permit; |
311 | }; |
312 | |
313 | /** |
314 | * struct ieee802154_pan_device - PAN device information |
315 | * @pan_id: the PAN ID of this device |
316 | * @mode: the preferred mode to reach the device |
317 | * @short_addr: the short address of this device |
318 | * @extended_addr: the extended address of this device |
319 | * @node: the list node |
320 | */ |
321 | struct ieee802154_pan_device { |
322 | __le16 pan_id; |
323 | u8 mode; |
324 | __le16 short_addr; |
325 | __le64 extended_addr; |
326 | struct list_head node; |
327 | }; |
328 | |
329 | /** |
330 | * struct cfg802154_scan_request - Scan request |
331 | * |
332 | * @type: type of scan to be performed |
333 | * @page: page on which to perform the scan |
334 | * @channels: channels in te %page to be scanned |
335 | * @duration: time spent on each channel, calculated with: |
336 | * aBaseSuperframeDuration * (2 ^ duration + 1) |
337 | * @wpan_dev: the wpan device on which to perform the scan |
338 | * @wpan_phy: the wpan phy on which to perform the scan |
339 | */ |
340 | struct cfg802154_scan_request { |
341 | enum nl802154_scan_types type; |
342 | u8 page; |
343 | u32 channels; |
344 | u8 duration; |
345 | struct wpan_dev *wpan_dev; |
346 | struct wpan_phy *wpan_phy; |
347 | }; |
348 | |
349 | /** |
350 | * struct cfg802154_beacon_request - Beacon request descriptor |
351 | * |
352 | * @interval: interval n between sendings, in multiple order of the super frame |
353 | * duration: aBaseSuperframeDuration * (2^n) unless the interval |
354 | * order is greater or equal to 15, in this case beacons won't be |
355 | * passively sent out at a fixed rate but instead inform the device |
356 | * that it should answer beacon requests as part of active scan |
357 | * procedures |
358 | * @wpan_dev: the concerned wpan device |
359 | * @wpan_phy: the wpan phy this was for |
360 | */ |
361 | struct cfg802154_beacon_request { |
362 | u8 interval; |
363 | struct wpan_dev *wpan_dev; |
364 | struct wpan_phy *wpan_phy; |
365 | }; |
366 | |
367 | /** |
368 | * struct cfg802154_mac_pkt - MAC packet descriptor (beacon/command) |
369 | * @node: MAC packets to process list member |
370 | * @skb: the received sk_buff |
371 | * @sdata: the interface on which @skb was received |
372 | * @page: page configuration when @skb was received |
373 | * @channel: channel configuration when @skb was received |
374 | */ |
375 | struct cfg802154_mac_pkt { |
376 | struct list_head node; |
377 | struct sk_buff *skb; |
378 | struct ieee802154_sub_if_data *sdata; |
379 | u8 page; |
380 | u8 channel; |
381 | }; |
382 | |
383 | struct ieee802154_llsec_key_id { |
384 | u8 mode; |
385 | u8 id; |
386 | union { |
387 | struct ieee802154_addr device_addr; |
388 | __le32 short_source; |
389 | __le64 extended_source; |
390 | }; |
391 | }; |
392 | |
393 | #define IEEE802154_LLSEC_KEY_SIZE 16 |
394 | |
395 | struct ieee802154_llsec_key { |
396 | u8 frame_types; |
397 | u32 cmd_frame_ids; |
398 | /* TODO replace with NL802154_KEY_SIZE */ |
399 | u8 key[IEEE802154_LLSEC_KEY_SIZE]; |
400 | }; |
401 | |
402 | struct ieee802154_llsec_key_entry { |
403 | struct list_head list; |
404 | struct rcu_head rcu; |
405 | |
406 | struct ieee802154_llsec_key_id id; |
407 | struct ieee802154_llsec_key *key; |
408 | }; |
409 | |
410 | struct ieee802154_llsec_params { |
411 | bool enabled; |
412 | |
413 | __be32 frame_counter; |
414 | u8 out_level; |
415 | struct ieee802154_llsec_key_id out_key; |
416 | |
417 | __le64 default_key_source; |
418 | |
419 | __le16 pan_id; |
420 | __le64 hwaddr; |
421 | __le64 coord_hwaddr; |
422 | __le16 coord_shortaddr; |
423 | }; |
424 | |
425 | struct ieee802154_llsec_table { |
426 | struct list_head keys; |
427 | struct list_head devices; |
428 | struct list_head security_levels; |
429 | }; |
430 | |
431 | struct ieee802154_llsec_seclevel { |
432 | struct list_head list; |
433 | |
434 | u8 frame_type; |
435 | u8 cmd_frame_id; |
436 | bool device_override; |
437 | u32 sec_levels; |
438 | }; |
439 | |
440 | struct ieee802154_llsec_device { |
441 | struct list_head list; |
442 | |
443 | __le16 pan_id; |
444 | __le16 short_addr; |
445 | __le64 hwaddr; |
446 | u32 frame_counter; |
447 | bool seclevel_exempt; |
448 | |
449 | u8 key_mode; |
450 | struct list_head keys; |
451 | }; |
452 | |
453 | struct ieee802154_llsec_device_key { |
454 | struct list_head list; |
455 | |
456 | struct ieee802154_llsec_key_id key_id; |
457 | u32 frame_counter; |
458 | }; |
459 | |
460 | struct { |
461 | /* TODO create callback currently assumes ieee802154_mac_cb inside |
462 | * skb->cb. This should be changed to give these information as |
463 | * parameter. |
464 | */ |
465 | int (*)(struct sk_buff *skb, struct net_device *dev, |
466 | const struct ieee802154_addr *daddr, |
467 | const struct ieee802154_addr *saddr, |
468 | unsigned int len); |
469 | }; |
470 | |
471 | struct wpan_dev { |
472 | struct wpan_phy *wpan_phy; |
473 | int iftype; |
474 | |
475 | /* the remainder of this struct should be private to cfg802154 */ |
476 | struct list_head list; |
477 | struct net_device *netdev; |
478 | |
479 | const struct wpan_dev_header_ops *; |
480 | |
481 | /* lowpan interface, set when the wpan_dev belongs to one lowpan_dev */ |
482 | struct net_device *lowpan_dev; |
483 | |
484 | u32 identifier; |
485 | |
486 | /* MAC PIB */ |
487 | __le16 pan_id; |
488 | __le16 short_addr; |
489 | __le64 extended_addr; |
490 | |
491 | /* MAC BSN field */ |
492 | atomic_t bsn; |
493 | /* MAC DSN field */ |
494 | atomic_t dsn; |
495 | |
496 | u8 min_be; |
497 | u8 max_be; |
498 | u8 csma_retries; |
499 | s8 frame_retries; |
500 | |
501 | bool lbt; |
502 | |
503 | /* fallback for acknowledgment bit setting */ |
504 | bool ackreq; |
505 | |
506 | /* Associations */ |
507 | struct mutex association_lock; |
508 | struct ieee802154_pan_device *parent; |
509 | struct list_head children; |
510 | unsigned int max_associations; |
511 | unsigned int nchildren; |
512 | }; |
513 | |
514 | #define to_phy(_dev) container_of(_dev, struct wpan_phy, dev) |
515 | |
516 | #if IS_ENABLED(CONFIG_IEEE802154) || IS_ENABLED(CONFIG_6LOWPAN) |
517 | static inline int |
518 | (struct sk_buff *skb, struct net_device *dev, |
519 | const struct ieee802154_addr *daddr, |
520 | const struct ieee802154_addr *saddr, |
521 | unsigned int len) |
522 | { |
523 | struct wpan_dev *wpan_dev = dev->ieee802154_ptr; |
524 | |
525 | return wpan_dev->header_ops->create(skb, dev, daddr, saddr, len); |
526 | } |
527 | #endif |
528 | |
529 | struct wpan_phy * |
530 | wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size); |
531 | static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev) |
532 | { |
533 | phy->dev.parent = dev; |
534 | } |
535 | |
536 | int wpan_phy_register(struct wpan_phy *phy); |
537 | void wpan_phy_unregister(struct wpan_phy *phy); |
538 | void wpan_phy_free(struct wpan_phy *phy); |
539 | /* Same semantics as for class_for_each_device */ |
540 | int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data); |
541 | |
542 | static inline void *wpan_phy_priv(struct wpan_phy *phy) |
543 | { |
544 | BUG_ON(!phy); |
545 | return &phy->priv; |
546 | } |
547 | |
548 | struct wpan_phy *wpan_phy_find(const char *str); |
549 | |
550 | static inline void wpan_phy_put(struct wpan_phy *phy) |
551 | { |
552 | put_device(dev: &phy->dev); |
553 | } |
554 | |
555 | static inline const char *wpan_phy_name(struct wpan_phy *phy) |
556 | { |
557 | return dev_name(dev: &phy->dev); |
558 | } |
559 | |
560 | void ieee802154_configure_durations(struct wpan_phy *phy, |
561 | unsigned int page, unsigned int channel); |
562 | |
563 | /** |
564 | * cfg802154_device_is_associated - Checks whether we are associated to any device |
565 | * @wpan_dev: the wpan device |
566 | * @return: true if we are associated |
567 | */ |
568 | bool cfg802154_device_is_associated(struct wpan_dev *wpan_dev); |
569 | |
570 | /** |
571 | * cfg802154_device_is_parent - Checks if a device is our coordinator |
572 | * @wpan_dev: the wpan device |
573 | * @target: the expected parent |
574 | * @return: true if @target is our coordinator |
575 | */ |
576 | bool cfg802154_device_is_parent(struct wpan_dev *wpan_dev, |
577 | struct ieee802154_addr *target); |
578 | |
579 | /** |
580 | * cfg802154_device_is_child - Checks whether a device is associated to us |
581 | * @wpan_dev: the wpan device |
582 | * @target: the expected child |
583 | * @return: the PAN device |
584 | */ |
585 | struct ieee802154_pan_device * |
586 | cfg802154_device_is_child(struct wpan_dev *wpan_dev, |
587 | struct ieee802154_addr *target); |
588 | |
589 | /** |
590 | * cfg802154_set_max_associations - Limit the number of future associations |
591 | * @wpan_dev: the wpan device |
592 | * @max: the maximum number of devices we accept to associate |
593 | * @return: the old maximum value |
594 | */ |
595 | unsigned int cfg802154_set_max_associations(struct wpan_dev *wpan_dev, |
596 | unsigned int max); |
597 | |
598 | /** |
599 | * cfg802154_get_free_short_addr - Get a free address among the known devices |
600 | * @wpan_dev: the wpan device |
601 | * @return: a random short address expectedly unused on our PAN |
602 | */ |
603 | __le16 cfg802154_get_free_short_addr(struct wpan_dev *wpan_dev); |
604 | |
605 | #endif /* __NET_CFG802154_H */ |
606 | |