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Diffstat (limited to 'include/net/wireless.h')
-rw-r--r-- | include/net/wireless.h | 472 |
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diff --git a/include/net/wireless.h b/include/net/wireless.h deleted file mode 100644 index 64a76208580c..000000000000 --- a/include/net/wireless.h +++ /dev/null | |||
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1 | #ifndef __NET_WIRELESS_H | ||
2 | #define __NET_WIRELESS_H | ||
3 | |||
4 | /* | ||
5 | * 802.11 device management | ||
6 | * | ||
7 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> | ||
8 | */ | ||
9 | |||
10 | #include <linux/netdevice.h> | ||
11 | #include <linux/debugfs.h> | ||
12 | #include <linux/list.h> | ||
13 | #include <linux/ieee80211.h> | ||
14 | #include <net/cfg80211.h> | ||
15 | |||
16 | /** | ||
17 | * enum ieee80211_band - supported frequency bands | ||
18 | * | ||
19 | * The bands are assigned this way because the supported | ||
20 | * bitrates differ in these bands. | ||
21 | * | ||
22 | * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band | ||
23 | * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) | ||
24 | */ | ||
25 | enum ieee80211_band { | ||
26 | IEEE80211_BAND_2GHZ, | ||
27 | IEEE80211_BAND_5GHZ, | ||
28 | |||
29 | /* keep last */ | ||
30 | IEEE80211_NUM_BANDS | ||
31 | }; | ||
32 | |||
33 | /** | ||
34 | * enum ieee80211_channel_flags - channel flags | ||
35 | * | ||
36 | * Channel flags set by the regulatory control code. | ||
37 | * | ||
38 | * @IEEE80211_CHAN_DISABLED: This channel is disabled. | ||
39 | * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted | ||
40 | * on this channel. | ||
41 | * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. | ||
42 | * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. | ||
43 | * @IEEE80211_CHAN_NO_FAT_ABOVE: extension channel above this channel | ||
44 | * is not permitted. | ||
45 | * @IEEE80211_CHAN_NO_FAT_BELOW: extension channel below this channel | ||
46 | * is not permitted. | ||
47 | */ | ||
48 | enum ieee80211_channel_flags { | ||
49 | IEEE80211_CHAN_DISABLED = 1<<0, | ||
50 | IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, | ||
51 | IEEE80211_CHAN_NO_IBSS = 1<<2, | ||
52 | IEEE80211_CHAN_RADAR = 1<<3, | ||
53 | IEEE80211_CHAN_NO_FAT_ABOVE = 1<<4, | ||
54 | IEEE80211_CHAN_NO_FAT_BELOW = 1<<5, | ||
55 | }; | ||
56 | |||
57 | /** | ||
58 | * struct ieee80211_channel - channel definition | ||
59 | * | ||
60 | * This structure describes a single channel for use | ||
61 | * with cfg80211. | ||
62 | * | ||
63 | * @center_freq: center frequency in MHz | ||
64 | * @max_bandwidth: maximum allowed bandwidth for this channel, in MHz | ||
65 | * @hw_value: hardware-specific value for the channel | ||
66 | * @flags: channel flags from &enum ieee80211_channel_flags. | ||
67 | * @orig_flags: channel flags at registration time, used by regulatory | ||
68 | * code to support devices with additional restrictions | ||
69 | * @band: band this channel belongs to. | ||
70 | * @max_antenna_gain: maximum antenna gain in dBi | ||
71 | * @max_power: maximum transmission power (in dBm) | ||
72 | * @beacon_found: helper to regulatory code to indicate when a beacon | ||
73 | * has been found on this channel. Use regulatory_hint_found_beacon() | ||
74 | * to enable this, this is is useful only on 5 GHz band. | ||
75 | * @orig_mag: internal use | ||
76 | * @orig_mpwr: internal use | ||
77 | */ | ||
78 | struct ieee80211_channel { | ||
79 | enum ieee80211_band band; | ||
80 | u16 center_freq; | ||
81 | u8 max_bandwidth; | ||
82 | u16 hw_value; | ||
83 | u32 flags; | ||
84 | int max_antenna_gain; | ||
85 | int max_power; | ||
86 | bool beacon_found; | ||
87 | u32 orig_flags; | ||
88 | int orig_mag, orig_mpwr; | ||
89 | }; | ||
90 | |||
91 | /** | ||
92 | * enum ieee80211_rate_flags - rate flags | ||
93 | * | ||
94 | * Hardware/specification flags for rates. These are structured | ||
95 | * in a way that allows using the same bitrate structure for | ||
96 | * different bands/PHY modes. | ||
97 | * | ||
98 | * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short | ||
99 | * preamble on this bitrate; only relevant in 2.4GHz band and | ||
100 | * with CCK rates. | ||
101 | * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate | ||
102 | * when used with 802.11a (on the 5 GHz band); filled by the | ||
103 | * core code when registering the wiphy. | ||
104 | * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate | ||
105 | * when used with 802.11b (on the 2.4 GHz band); filled by the | ||
106 | * core code when registering the wiphy. | ||
107 | * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate | ||
108 | * when used with 802.11g (on the 2.4 GHz band); filled by the | ||
109 | * core code when registering the wiphy. | ||
110 | * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. | ||
111 | */ | ||
112 | enum ieee80211_rate_flags { | ||
113 | IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, | ||
114 | IEEE80211_RATE_MANDATORY_A = 1<<1, | ||
115 | IEEE80211_RATE_MANDATORY_B = 1<<2, | ||
116 | IEEE80211_RATE_MANDATORY_G = 1<<3, | ||
117 | IEEE80211_RATE_ERP_G = 1<<4, | ||
118 | }; | ||
119 | |||
120 | /** | ||
121 | * struct ieee80211_rate - bitrate definition | ||
122 | * | ||
123 | * This structure describes a bitrate that an 802.11 PHY can | ||
124 | * operate with. The two values @hw_value and @hw_value_short | ||
125 | * are only for driver use when pointers to this structure are | ||
126 | * passed around. | ||
127 | * | ||
128 | * @flags: rate-specific flags | ||
129 | * @bitrate: bitrate in units of 100 Kbps | ||
130 | * @hw_value: driver/hardware value for this rate | ||
131 | * @hw_value_short: driver/hardware value for this rate when | ||
132 | * short preamble is used | ||
133 | */ | ||
134 | struct ieee80211_rate { | ||
135 | u32 flags; | ||
136 | u16 bitrate; | ||
137 | u16 hw_value, hw_value_short; | ||
138 | }; | ||
139 | |||
140 | /** | ||
141 | * struct ieee80211_sta_ht_cap - STA's HT capabilities | ||
142 | * | ||
143 | * This structure describes most essential parameters needed | ||
144 | * to describe 802.11n HT capabilities for an STA. | ||
145 | * | ||
146 | * @ht_supported: is HT supported by the STA | ||
147 | * @cap: HT capabilities map as described in 802.11n spec | ||
148 | * @ampdu_factor: Maximum A-MPDU length factor | ||
149 | * @ampdu_density: Minimum A-MPDU spacing | ||
150 | * @mcs: Supported MCS rates | ||
151 | */ | ||
152 | struct ieee80211_sta_ht_cap { | ||
153 | u16 cap; /* use IEEE80211_HT_CAP_ */ | ||
154 | bool ht_supported; | ||
155 | u8 ampdu_factor; | ||
156 | u8 ampdu_density; | ||
157 | struct ieee80211_mcs_info mcs; | ||
158 | }; | ||
159 | |||
160 | /** | ||
161 | * struct ieee80211_supported_band - frequency band definition | ||
162 | * | ||
163 | * This structure describes a frequency band a wiphy | ||
164 | * is able to operate in. | ||
165 | * | ||
166 | * @channels: Array of channels the hardware can operate in | ||
167 | * in this band. | ||
168 | * @band: the band this structure represents | ||
169 | * @n_channels: Number of channels in @channels | ||
170 | * @bitrates: Array of bitrates the hardware can operate with | ||
171 | * in this band. Must be sorted to give a valid "supported | ||
172 | * rates" IE, i.e. CCK rates first, then OFDM. | ||
173 | * @n_bitrates: Number of bitrates in @bitrates | ||
174 | */ | ||
175 | struct ieee80211_supported_band { | ||
176 | struct ieee80211_channel *channels; | ||
177 | struct ieee80211_rate *bitrates; | ||
178 | enum ieee80211_band band; | ||
179 | int n_channels; | ||
180 | int n_bitrates; | ||
181 | struct ieee80211_sta_ht_cap ht_cap; | ||
182 | }; | ||
183 | |||
184 | /** | ||
185 | * struct wiphy - wireless hardware description | ||
186 | * @idx: the wiphy index assigned to this item | ||
187 | * @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name> | ||
188 | * @custom_regulatory: tells us the driver for this device | ||
189 | * has its own custom regulatory domain and cannot identify the | ||
190 | * ISO / IEC 3166 alpha2 it belongs to. When this is enabled | ||
191 | * we will disregard the first regulatory hint (when the | ||
192 | * initiator is %REGDOM_SET_BY_CORE). | ||
193 | * @strict_regulatory: tells us the driver for this device will ignore | ||
194 | * regulatory domain settings until it gets its own regulatory domain | ||
195 | * via its regulatory_hint(). After its gets its own regulatory domain | ||
196 | * it will only allow further regulatory domain settings to further | ||
197 | * enhance compliance. For example if channel 13 and 14 are disabled | ||
198 | * by this regulatory domain no user regulatory domain can enable these | ||
199 | * channels at a later time. This can be used for devices which do not | ||
200 | * have calibration information gauranteed for frequencies or settings | ||
201 | * outside of its regulatory domain. | ||
202 | * @reg_notifier: the driver's regulatory notification callback | ||
203 | * @regd: the driver's regulatory domain, if one was requested via | ||
204 | * the regulatory_hint() API. This can be used by the driver | ||
205 | * on the reg_notifier() if it chooses to ignore future | ||
206 | * regulatory domain changes caused by other drivers. | ||
207 | * @signal_type: signal type reported in &struct cfg80211_bss. | ||
208 | */ | ||
209 | struct wiphy { | ||
210 | /* assign these fields before you register the wiphy */ | ||
211 | |||
212 | /* permanent MAC address */ | ||
213 | u8 perm_addr[ETH_ALEN]; | ||
214 | |||
215 | /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ | ||
216 | u16 interface_modes; | ||
217 | |||
218 | bool custom_regulatory; | ||
219 | bool strict_regulatory; | ||
220 | |||
221 | enum cfg80211_signal_type signal_type; | ||
222 | |||
223 | int bss_priv_size; | ||
224 | u8 max_scan_ssids; | ||
225 | |||
226 | /* If multiple wiphys are registered and you're handed e.g. | ||
227 | * a regular netdev with assigned ieee80211_ptr, you won't | ||
228 | * know whether it points to a wiphy your driver has registered | ||
229 | * or not. Assign this to something global to your driver to | ||
230 | * help determine whether you own this wiphy or not. */ | ||
231 | void *privid; | ||
232 | |||
233 | struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; | ||
234 | |||
235 | /* Lets us get back the wiphy on the callback */ | ||
236 | int (*reg_notifier)(struct wiphy *wiphy, | ||
237 | struct regulatory_request *request); | ||
238 | |||
239 | /* fields below are read-only, assigned by cfg80211 */ | ||
240 | |||
241 | const struct ieee80211_regdomain *regd; | ||
242 | |||
243 | /* the item in /sys/class/ieee80211/ points to this, | ||
244 | * you need use set_wiphy_dev() (see below) */ | ||
245 | struct device dev; | ||
246 | |||
247 | /* dir in debugfs: ieee80211/<wiphyname> */ | ||
248 | struct dentry *debugfsdir; | ||
249 | |||
250 | char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); | ||
251 | }; | ||
252 | |||
253 | /** struct wireless_dev - wireless per-netdev state | ||
254 | * | ||
255 | * This structure must be allocated by the driver/stack | ||
256 | * that uses the ieee80211_ptr field in struct net_device | ||
257 | * (this is intentional so it can be allocated along with | ||
258 | * the netdev.) | ||
259 | * | ||
260 | * @wiphy: pointer to hardware description | ||
261 | * @iftype: interface type | ||
262 | */ | ||
263 | struct wireless_dev { | ||
264 | struct wiphy *wiphy; | ||
265 | enum nl80211_iftype iftype; | ||
266 | |||
267 | /* private to the generic wireless code */ | ||
268 | struct list_head list; | ||
269 | struct net_device *netdev; | ||
270 | }; | ||
271 | |||
272 | /** | ||
273 | * wiphy_priv - return priv from wiphy | ||
274 | */ | ||
275 | static inline void *wiphy_priv(struct wiphy *wiphy) | ||
276 | { | ||
277 | BUG_ON(!wiphy); | ||
278 | return &wiphy->priv; | ||
279 | } | ||
280 | |||
281 | /** | ||
282 | * set_wiphy_dev - set device pointer for wiphy | ||
283 | */ | ||
284 | static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) | ||
285 | { | ||
286 | wiphy->dev.parent = dev; | ||
287 | } | ||
288 | |||
289 | /** | ||
290 | * wiphy_dev - get wiphy dev pointer | ||
291 | */ | ||
292 | static inline struct device *wiphy_dev(struct wiphy *wiphy) | ||
293 | { | ||
294 | return wiphy->dev.parent; | ||
295 | } | ||
296 | |||
297 | /** | ||
298 | * wiphy_name - get wiphy name | ||
299 | */ | ||
300 | static inline const char *wiphy_name(struct wiphy *wiphy) | ||
301 | { | ||
302 | return dev_name(&wiphy->dev); | ||
303 | } | ||
304 | |||
305 | /** | ||
306 | * wdev_priv - return wiphy priv from wireless_dev | ||
307 | */ | ||
308 | static inline void *wdev_priv(struct wireless_dev *wdev) | ||
309 | { | ||
310 | BUG_ON(!wdev); | ||
311 | return wiphy_priv(wdev->wiphy); | ||
312 | } | ||
313 | |||
314 | /** | ||
315 | * wiphy_new - create a new wiphy for use with cfg80211 | ||
316 | * | ||
317 | * create a new wiphy and associate the given operations with it. | ||
318 | * @sizeof_priv bytes are allocated for private use. | ||
319 | * | ||
320 | * the returned pointer must be assigned to each netdev's | ||
321 | * ieee80211_ptr for proper operation. | ||
322 | */ | ||
323 | struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv); | ||
324 | |||
325 | /** | ||
326 | * wiphy_register - register a wiphy with cfg80211 | ||
327 | * | ||
328 | * register the given wiphy | ||
329 | * | ||
330 | * Returns a non-negative wiphy index or a negative error code. | ||
331 | */ | ||
332 | extern int wiphy_register(struct wiphy *wiphy); | ||
333 | |||
334 | /** | ||
335 | * wiphy_unregister - deregister a wiphy from cfg80211 | ||
336 | * | ||
337 | * unregister a device with the given priv pointer. | ||
338 | * After this call, no more requests can be made with this priv | ||
339 | * pointer, but the call may sleep to wait for an outstanding | ||
340 | * request that is being handled. | ||
341 | */ | ||
342 | extern void wiphy_unregister(struct wiphy *wiphy); | ||
343 | |||
344 | /** | ||
345 | * wiphy_free - free wiphy | ||
346 | */ | ||
347 | extern void wiphy_free(struct wiphy *wiphy); | ||
348 | |||
349 | /** | ||
350 | * ieee80211_channel_to_frequency - convert channel number to frequency | ||
351 | */ | ||
352 | extern int ieee80211_channel_to_frequency(int chan); | ||
353 | |||
354 | /** | ||
355 | * ieee80211_frequency_to_channel - convert frequency to channel number | ||
356 | */ | ||
357 | extern int ieee80211_frequency_to_channel(int freq); | ||
358 | |||
359 | /* | ||
360 | * Name indirection necessary because the ieee80211 code also has | ||
361 | * a function named "ieee80211_get_channel", so if you include | ||
362 | * cfg80211's header file you get cfg80211's version, if you try | ||
363 | * to include both header files you'll (rightfully!) get a symbol | ||
364 | * clash. | ||
365 | */ | ||
366 | extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, | ||
367 | int freq); | ||
368 | /** | ||
369 | * ieee80211_get_channel - get channel struct from wiphy for specified frequency | ||
370 | */ | ||
371 | static inline struct ieee80211_channel * | ||
372 | ieee80211_get_channel(struct wiphy *wiphy, int freq) | ||
373 | { | ||
374 | return __ieee80211_get_channel(wiphy, freq); | ||
375 | } | ||
376 | |||
377 | /** | ||
378 | * ieee80211_get_response_rate - get basic rate for a given rate | ||
379 | * | ||
380 | * @sband: the band to look for rates in | ||
381 | * @basic_rates: bitmap of basic rates | ||
382 | * @bitrate: the bitrate for which to find the basic rate | ||
383 | * | ||
384 | * This function returns the basic rate corresponding to a given | ||
385 | * bitrate, that is the next lower bitrate contained in the basic | ||
386 | * rate map, which is, for this function, given as a bitmap of | ||
387 | * indices of rates in the band's bitrate table. | ||
388 | */ | ||
389 | struct ieee80211_rate * | ||
390 | ieee80211_get_response_rate(struct ieee80211_supported_band *sband, | ||
391 | u32 basic_rates, int bitrate); | ||
392 | |||
393 | /** | ||
394 | * regulatory_hint - driver hint to the wireless core a regulatory domain | ||
395 | * @wiphy: the wireless device giving the hint (used only for reporting | ||
396 | * conflicts) | ||
397 | * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain | ||
398 | * should be in. If @rd is set this should be NULL. Note that if you | ||
399 | * set this to NULL you should still set rd->alpha2 to some accepted | ||
400 | * alpha2. | ||
401 | * | ||
402 | * Wireless drivers can use this function to hint to the wireless core | ||
403 | * what it believes should be the current regulatory domain by | ||
404 | * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory | ||
405 | * domain should be in or by providing a completely build regulatory domain. | ||
406 | * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried | ||
407 | * for a regulatory domain structure for the respective country. | ||
408 | * | ||
409 | * The wiphy must have been registered to cfg80211 prior to this call. | ||
410 | * For cfg80211 drivers this means you must first use wiphy_register(), | ||
411 | * for mac80211 drivers you must first use ieee80211_register_hw(). | ||
412 | * | ||
413 | * Drivers should check the return value, its possible you can get | ||
414 | * an -ENOMEM. | ||
415 | */ | ||
416 | extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); | ||
417 | |||
418 | /** | ||
419 | * regulatory_hint_11d - hints a country IE as a regulatory domain | ||
420 | * @wiphy: the wireless device giving the hint (used only for reporting | ||
421 | * conflicts) | ||
422 | * @country_ie: pointer to the country IE | ||
423 | * @country_ie_len: length of the country IE | ||
424 | * | ||
425 | * We will intersect the rd with the what CRDA tells us should apply | ||
426 | * for the alpha2 this country IE belongs to, this prevents APs from | ||
427 | * sending us incorrect or outdated information against a country. | ||
428 | */ | ||
429 | extern void regulatory_hint_11d(struct wiphy *wiphy, | ||
430 | u8 *country_ie, | ||
431 | u8 country_ie_len); | ||
432 | /** | ||
433 | * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain | ||
434 | * @wiphy: the wireless device we want to process the regulatory domain on | ||
435 | * @regd: the custom regulatory domain to use for this wiphy | ||
436 | * | ||
437 | * Drivers can sometimes have custom regulatory domains which do not apply | ||
438 | * to a specific country. Drivers can use this to apply such custom regulatory | ||
439 | * domains. This routine must be called prior to wiphy registration. The | ||
440 | * custom regulatory domain will be trusted completely and as such previous | ||
441 | * default channel settings will be disregarded. If no rule is found for a | ||
442 | * channel on the regulatory domain the channel will be disabled. | ||
443 | */ | ||
444 | extern void wiphy_apply_custom_regulatory( | ||
445 | struct wiphy *wiphy, | ||
446 | const struct ieee80211_regdomain *regd); | ||
447 | |||
448 | /** | ||
449 | * freq_reg_info - get regulatory information for the given frequency | ||
450 | * @wiphy: the wiphy for which we want to process this rule for | ||
451 | * @center_freq: Frequency in KHz for which we want regulatory information for | ||
452 | * @bandwidth: the bandwidth requirement you have in KHz, if you do not have one | ||
453 | * you can set this to 0. If this frequency is allowed we then set | ||
454 | * this value to the maximum allowed bandwidth. | ||
455 | * @reg_rule: the regulatory rule which we have for this frequency | ||
456 | * | ||
457 | * Use this function to get the regulatory rule for a specific frequency on | ||
458 | * a given wireless device. If the device has a specific regulatory domain | ||
459 | * it wants to follow we respect that unless a country IE has been received | ||
460 | * and processed already. | ||
461 | * | ||
462 | * Returns 0 if it was able to find a valid regulatory rule which does | ||
463 | * apply to the given center_freq otherwise it returns non-zero. It will | ||
464 | * also return -ERANGE if we determine the given center_freq does not even have | ||
465 | * a regulatory rule for a frequency range in the center_freq's band. See | ||
466 | * freq_in_rule_band() for our current definition of a band -- this is purely | ||
467 | * subjective and right now its 802.11 specific. | ||
468 | */ | ||
469 | extern int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 *bandwidth, | ||
470 | const struct ieee80211_reg_rule **reg_rule); | ||
471 | |||
472 | #endif /* __NET_WIRELESS_H */ | ||