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1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
3 | * Copyright 2005, Devicescape Software, Inc. |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
5 | * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as |
9 | * published by the Free Software Foundation. |
10 | */ |
11 | |
12 | #ifndef IEEE80211_I_H |
13 | #define IEEE80211_I_H |
14 | |
15 | #include <linux/kernel.h> |
16 | #include <linux/device.h> |
17 | #include <linux/if_ether.h> |
18 | #include <linux/interrupt.h> |
19 | #include <linux/list.h> |
20 | #include <linux/netdevice.h> |
21 | #include <linux/skbuff.h> |
22 | #include <linux/workqueue.h> |
23 | #include <linux/types.h> |
24 | #include <linux/spinlock.h> |
25 | #include <linux/etherdevice.h> |
26 | #include <linux/leds.h> |
27 | #include <linux/idr.h> |
28 | #include <net/ieee80211_radiotap.h> |
29 | #include <net/cfg80211.h> |
30 | #include <net/mac80211.h> |
31 | #include "key.h" |
32 | #include "sta_info.h" |
33 | |
34 | struct ieee80211_local; |
35 | |
36 | /* Maximum number of broadcast/multicast frames to buffer when some of the |
37 | * associated stations are using power saving. */ |
38 | #define AP_MAX_BC_BUFFER 128 |
39 | |
40 | /* Maximum number of frames buffered to all STAs, including multicast frames. |
41 | * Note: increasing this limit increases the potential memory requirement. Each |
42 | * frame can be up to about 2 kB long. */ |
43 | #define TOTAL_MAX_TX_BUFFER 512 |
44 | |
45 | /* Required encryption head and tailroom */ |
46 | #define IEEE80211_ENCRYPT_HEADROOM 8 |
47 | #define IEEE80211_ENCRYPT_TAILROOM 18 |
48 | |
49 | /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent |
50 | * reception of at least three fragmented frames. This limit can be increased |
51 | * by changing this define, at the cost of slower frame reassembly and |
52 | * increased memory use (about 2 kB of RAM per entry). */ |
53 | #define IEEE80211_FRAGMENT_MAX 4 |
54 | |
55 | #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) |
56 | |
57 | #define IEEE80211_DEFAULT_UAPSD_QUEUES \ |
58 | (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ |
59 | IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ |
60 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ |
61 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
62 | |
63 | #define IEEE80211_DEFAULT_MAX_SP_LEN \ |
64 | IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL |
65 | |
66 | struct ieee80211_fragment_entry { |
67 | unsigned long first_frag_time; |
68 | unsigned int seq; |
69 | unsigned int rx_queue; |
70 | unsigned int last_frag; |
71 | unsigned int extra_len; |
72 | struct sk_buff_head skb_list; |
73 | int ccmp; /* Whether fragments were encrypted with CCMP */ |
74 | u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ |
75 | }; |
76 | |
77 | |
78 | struct ieee80211_bss { |
79 | /* don't want to look up all the time */ |
80 | size_t ssid_len; |
81 | u8 ssid[IEEE80211_MAX_SSID_LEN]; |
82 | |
83 | u8 dtim_period; |
84 | |
85 | bool wmm_used; |
86 | bool uapsd_supported; |
87 | |
88 | unsigned long last_probe_resp; |
89 | |
90 | #ifdef CONFIG_MAC80211_MESH |
91 | u8 *mesh_id; |
92 | size_t mesh_id_len; |
93 | u8 *mesh_cfg; |
94 | #endif |
95 | |
96 | #define IEEE80211_MAX_SUPP_RATES 32 |
97 | u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; |
98 | size_t supp_rates_len; |
99 | |
100 | /* |
101 | * During association, we save an ERP value from a probe response so |
102 | * that we can feed ERP info to the driver when handling the |
103 | * association completes. these fields probably won't be up-to-date |
104 | * otherwise, you probably don't want to use them. |
105 | */ |
106 | bool has_erp_value; |
107 | u8 erp_value; |
108 | |
109 | /* Keep track of the corruption of the last beacon/probe response. */ |
110 | u8 corrupt_data; |
111 | |
112 | /* Keep track of what bits of information we have valid info for. */ |
113 | u8 valid_data; |
114 | }; |
115 | |
116 | /** |
117 | * enum ieee80211_corrupt_data_flags - BSS data corruption flags |
118 | * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted |
119 | * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted |
120 | * |
121 | * These are bss flags that are attached to a bss in the |
122 | * @corrupt_data field of &struct ieee80211_bss. |
123 | */ |
124 | enum ieee80211_bss_corrupt_data_flags { |
125 | IEEE80211_BSS_CORRUPT_BEACON = BIT(0), |
126 | IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) |
127 | }; |
128 | |
129 | /** |
130 | * enum ieee80211_valid_data_flags - BSS valid data flags |
131 | * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE |
132 | * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE |
133 | * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE |
134 | * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE |
135 | * |
136 | * These are bss flags that are attached to a bss in the |
137 | * @valid_data field of &struct ieee80211_bss. They show which parts |
138 | * of the data structure were recieved as a result of an un-corrupted |
139 | * beacon/probe response. |
140 | */ |
141 | enum ieee80211_bss_valid_data_flags { |
142 | IEEE80211_BSS_VALID_DTIM = BIT(0), |
143 | IEEE80211_BSS_VALID_WMM = BIT(1), |
144 | IEEE80211_BSS_VALID_RATES = BIT(2), |
145 | IEEE80211_BSS_VALID_ERP = BIT(3) |
146 | }; |
147 | |
148 | static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) |
149 | { |
150 | #ifdef CONFIG_MAC80211_MESH |
151 | return bss->mesh_cfg; |
152 | #endif |
153 | return NULL; |
154 | } |
155 | |
156 | static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) |
157 | { |
158 | #ifdef CONFIG_MAC80211_MESH |
159 | return bss->mesh_id; |
160 | #endif |
161 | return NULL; |
162 | } |
163 | |
164 | static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) |
165 | { |
166 | #ifdef CONFIG_MAC80211_MESH |
167 | return bss->mesh_id_len; |
168 | #endif |
169 | return 0; |
170 | } |
171 | |
172 | |
173 | typedef unsigned __bitwise__ ieee80211_tx_result; |
174 | #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) |
175 | #define TX_DROP ((__force ieee80211_tx_result) 1u) |
176 | #define TX_QUEUED ((__force ieee80211_tx_result) 2u) |
177 | |
178 | #define IEEE80211_TX_UNICAST BIT(1) |
179 | #define IEEE80211_TX_PS_BUFFERED BIT(2) |
180 | |
181 | struct ieee80211_tx_data { |
182 | struct sk_buff *skb; |
183 | struct sk_buff_head skbs; |
184 | struct ieee80211_local *local; |
185 | struct ieee80211_sub_if_data *sdata; |
186 | struct sta_info *sta; |
187 | struct ieee80211_key *key; |
188 | |
189 | struct ieee80211_channel *channel; |
190 | |
191 | unsigned int flags; |
192 | }; |
193 | |
194 | |
195 | typedef unsigned __bitwise__ ieee80211_rx_result; |
196 | #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) |
197 | #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) |
198 | #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) |
199 | #define RX_QUEUED ((__force ieee80211_rx_result) 3u) |
200 | |
201 | /** |
202 | * enum ieee80211_packet_rx_flags - packet RX flags |
203 | * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed |
204 | * (incl. multicast frames) |
205 | * @IEEE80211_RX_IN_SCAN: received while scanning |
206 | * @IEEE80211_RX_FRAGMENTED: fragmented frame |
207 | * @IEEE80211_RX_AMSDU: a-MSDU packet |
208 | * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed |
209 | * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering |
210 | * |
211 | * These are per-frame flags that are attached to a frame in the |
212 | * @rx_flags field of &struct ieee80211_rx_status. |
213 | */ |
214 | enum ieee80211_packet_rx_flags { |
215 | IEEE80211_RX_IN_SCAN = BIT(0), |
216 | IEEE80211_RX_RA_MATCH = BIT(1), |
217 | IEEE80211_RX_FRAGMENTED = BIT(2), |
218 | IEEE80211_RX_AMSDU = BIT(3), |
219 | IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), |
220 | IEEE80211_RX_DEFERRED_RELEASE = BIT(5), |
221 | }; |
222 | |
223 | /** |
224 | * enum ieee80211_rx_flags - RX data flags |
225 | * |
226 | * @IEEE80211_RX_CMNTR: received on cooked monitor already |
227 | * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported |
228 | * to cfg80211_report_obss_beacon(). |
229 | * |
230 | * These flags are used across handling multiple interfaces |
231 | * for a single frame. |
232 | */ |
233 | enum ieee80211_rx_flags { |
234 | IEEE80211_RX_CMNTR = BIT(0), |
235 | IEEE80211_RX_BEACON_REPORTED = BIT(1), |
236 | }; |
237 | |
238 | struct ieee80211_rx_data { |
239 | struct sk_buff *skb; |
240 | struct ieee80211_local *local; |
241 | struct ieee80211_sub_if_data *sdata; |
242 | struct sta_info *sta; |
243 | struct ieee80211_key *key; |
244 | |
245 | unsigned int flags; |
246 | |
247 | /* |
248 | * Index into sequence numbers array, 0..16 |
249 | * since the last (16) is used for non-QoS, |
250 | * will be 16 on non-QoS frames. |
251 | */ |
252 | int seqno_idx; |
253 | |
254 | /* |
255 | * Index into the security IV/PN arrays, 0..16 |
256 | * since the last (16) is used for CCMP-encrypted |
257 | * management frames, will be set to 16 on mgmt |
258 | * frames and 0 on non-QoS frames. |
259 | */ |
260 | int security_idx; |
261 | |
262 | u32 tkip_iv32; |
263 | u16 tkip_iv16; |
264 | }; |
265 | |
266 | struct beacon_data { |
267 | u8 *head, *tail; |
268 | int head_len, tail_len; |
269 | struct rcu_head rcu_head; |
270 | }; |
271 | |
272 | struct ieee80211_if_ap { |
273 | struct beacon_data __rcu *beacon; |
274 | struct sk_buff __rcu *probe_resp; |
275 | |
276 | struct list_head vlans; |
277 | |
278 | /* yes, this looks ugly, but guarantees that we can later use |
279 | * bitmap_empty :) |
280 | * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ |
281 | u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; |
282 | struct sk_buff_head ps_bc_buf; |
283 | atomic_t num_sta_ps; /* number of stations in PS mode */ |
284 | atomic_t num_sta_authorized; /* number of authorized stations */ |
285 | int dtim_count; |
286 | bool dtim_bc_mc; |
287 | }; |
288 | |
289 | struct ieee80211_if_wds { |
290 | struct sta_info *sta; |
291 | u8 remote_addr[ETH_ALEN]; |
292 | }; |
293 | |
294 | struct ieee80211_if_vlan { |
295 | struct list_head list; |
296 | |
297 | /* used for all tx if the VLAN is configured to 4-addr mode */ |
298 | struct sta_info __rcu *sta; |
299 | }; |
300 | |
301 | struct mesh_stats { |
302 | __u32 fwded_mcast; /* Mesh forwarded multicast frames */ |
303 | __u32 fwded_unicast; /* Mesh forwarded unicast frames */ |
304 | __u32 fwded_frames; /* Mesh total forwarded frames */ |
305 | __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ |
306 | __u32 dropped_frames_no_route; /* Not transmitted, no route found */ |
307 | __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ |
308 | atomic_t estab_plinks; |
309 | }; |
310 | |
311 | #define PREQ_Q_F_START 0x1 |
312 | #define PREQ_Q_F_REFRESH 0x2 |
313 | struct mesh_preq_queue { |
314 | struct list_head list; |
315 | u8 dst[ETH_ALEN]; |
316 | u8 flags; |
317 | }; |
318 | |
319 | enum ieee80211_work_type { |
320 | IEEE80211_WORK_ABORT, |
321 | IEEE80211_WORK_REMAIN_ON_CHANNEL, |
322 | IEEE80211_WORK_OFFCHANNEL_TX, |
323 | }; |
324 | |
325 | /** |
326 | * enum work_done_result - indicates what to do after work was done |
327 | * |
328 | * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. |
329 | * @WORK_DONE_REQUEUE: This work item was reset to be reused, and |
330 | * should be requeued. |
331 | */ |
332 | enum work_done_result { |
333 | WORK_DONE_DESTROY, |
334 | WORK_DONE_REQUEUE, |
335 | }; |
336 | |
337 | struct ieee80211_work { |
338 | struct list_head list; |
339 | |
340 | struct rcu_head rcu_head; |
341 | |
342 | struct ieee80211_sub_if_data *sdata; |
343 | |
344 | enum work_done_result (*done)(struct ieee80211_work *wk, |
345 | struct sk_buff *skb); |
346 | |
347 | struct ieee80211_channel *chan; |
348 | enum nl80211_channel_type chan_type; |
349 | |
350 | unsigned long timeout; |
351 | enum ieee80211_work_type type; |
352 | |
353 | bool started; |
354 | |
355 | union { |
356 | struct { |
357 | u32 duration; |
358 | } remain; |
359 | struct { |
360 | struct sk_buff *frame; |
361 | u32 wait; |
362 | bool status; |
363 | } offchan_tx; |
364 | }; |
365 | |
366 | size_t data_len; |
367 | u8 data[]; |
368 | }; |
369 | |
370 | /* flags used in struct ieee80211_if_managed.flags */ |
371 | enum ieee80211_sta_flags { |
372 | IEEE80211_STA_BEACON_POLL = BIT(0), |
373 | IEEE80211_STA_CONNECTION_POLL = BIT(1), |
374 | IEEE80211_STA_CONTROL_PORT = BIT(2), |
375 | IEEE80211_STA_DISABLE_11N = BIT(4), |
376 | IEEE80211_STA_CSA_RECEIVED = BIT(5), |
377 | IEEE80211_STA_MFP_ENABLED = BIT(6), |
378 | IEEE80211_STA_UAPSD_ENABLED = BIT(7), |
379 | IEEE80211_STA_NULLFUNC_ACKED = BIT(8), |
380 | IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), |
381 | }; |
382 | |
383 | struct ieee80211_mgd_auth_data { |
384 | struct cfg80211_bss *bss; |
385 | unsigned long timeout; |
386 | int tries; |
387 | u16 algorithm, expected_transaction; |
388 | |
389 | u8 key[WLAN_KEY_LEN_WEP104]; |
390 | u8 key_len, key_idx; |
391 | bool done; |
392 | |
393 | size_t ie_len; |
394 | u8 ie[]; |
395 | }; |
396 | |
397 | struct ieee80211_mgd_assoc_data { |
398 | struct cfg80211_bss *bss; |
399 | const u8 *supp_rates; |
400 | const u8 *ht_information_ie; |
401 | |
402 | unsigned long timeout; |
403 | int tries; |
404 | |
405 | u16 capability; |
406 | u8 prev_bssid[ETH_ALEN]; |
407 | u8 ssid[IEEE80211_MAX_SSID_LEN]; |
408 | u8 ssid_len; |
409 | u8 supp_rates_len; |
410 | bool wmm, uapsd; |
411 | bool have_beacon; |
412 | bool sent_assoc; |
413 | bool synced; |
414 | |
415 | size_t ie_len; |
416 | u8 ie[]; |
417 | }; |
418 | |
419 | struct ieee80211_if_managed { |
420 | struct timer_list timer; |
421 | struct timer_list conn_mon_timer; |
422 | struct timer_list bcn_mon_timer; |
423 | struct timer_list chswitch_timer; |
424 | struct work_struct monitor_work; |
425 | struct work_struct chswitch_work; |
426 | struct work_struct beacon_connection_loss_work; |
427 | |
428 | unsigned long beacon_timeout; |
429 | unsigned long probe_timeout; |
430 | int probe_send_count; |
431 | bool nullfunc_failed; |
432 | |
433 | struct mutex mtx; |
434 | struct cfg80211_bss *associated; |
435 | struct ieee80211_mgd_auth_data *auth_data; |
436 | struct ieee80211_mgd_assoc_data *assoc_data; |
437 | |
438 | u8 bssid[ETH_ALEN]; |
439 | |
440 | u16 aid; |
441 | |
442 | unsigned long timers_running; /* used for quiesce/restart */ |
443 | bool powersave; /* powersave requested for this iface */ |
444 | bool broken_ap; /* AP is broken -- turn off powersave */ |
445 | enum ieee80211_smps_mode req_smps, /* requested smps mode */ |
446 | ap_smps, /* smps mode AP thinks we're in */ |
447 | driver_smps_mode; /* smps mode request */ |
448 | |
449 | struct work_struct request_smps_work; |
450 | |
451 | unsigned int flags; |
452 | |
453 | bool beacon_crc_valid; |
454 | u32 beacon_crc; |
455 | |
456 | enum { |
457 | IEEE80211_MFP_DISABLED, |
458 | IEEE80211_MFP_OPTIONAL, |
459 | IEEE80211_MFP_REQUIRED |
460 | } mfp; /* management frame protection */ |
461 | |
462 | /* |
463 | * Bitmask of enabled u-apsd queues, |
464 | * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association |
465 | * to take effect. |
466 | */ |
467 | unsigned int uapsd_queues; |
468 | |
469 | /* |
470 | * Maximum number of buffered frames AP can deliver during a |
471 | * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. |
472 | * Needs a new association to take effect. |
473 | */ |
474 | unsigned int uapsd_max_sp_len; |
475 | |
476 | int wmm_last_param_set; |
477 | |
478 | u8 use_4addr; |
479 | |
480 | /* Signal strength from the last Beacon frame in the current BSS. */ |
481 | int last_beacon_signal; |
482 | |
483 | /* |
484 | * Weighted average of the signal strength from Beacon frames in the |
485 | * current BSS. This is in units of 1/16 of the signal unit to maintain |
486 | * accuracy and to speed up calculations, i.e., the value need to be |
487 | * divided by 16 to get the actual value. |
488 | */ |
489 | int ave_beacon_signal; |
490 | |
491 | /* |
492 | * Number of Beacon frames used in ave_beacon_signal. This can be used |
493 | * to avoid generating less reliable cqm events that would be based |
494 | * only on couple of received frames. |
495 | */ |
496 | unsigned int count_beacon_signal; |
497 | |
498 | /* |
499 | * Last Beacon frame signal strength average (ave_beacon_signal / 16) |
500 | * that triggered a cqm event. 0 indicates that no event has been |
501 | * generated for the current association. |
502 | */ |
503 | int last_cqm_event_signal; |
504 | |
505 | /* |
506 | * State variables for keeping track of RSSI of the AP currently |
507 | * connected to and informing driver when RSSI has gone |
508 | * below/above a certain threshold. |
509 | */ |
510 | int rssi_min_thold, rssi_max_thold; |
511 | int last_ave_beacon_signal; |
512 | |
513 | struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ |
514 | struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ |
515 | }; |
516 | |
517 | struct ieee80211_if_ibss { |
518 | struct timer_list timer; |
519 | |
520 | struct mutex mtx; |
521 | |
522 | unsigned long last_scan_completed; |
523 | |
524 | u32 basic_rates; |
525 | |
526 | bool timer_running; |
527 | |
528 | bool fixed_bssid; |
529 | bool fixed_channel; |
530 | bool privacy; |
531 | |
532 | bool control_port; |
533 | |
534 | u8 bssid[ETH_ALEN] __aligned(2); |
535 | u8 ssid[IEEE80211_MAX_SSID_LEN]; |
536 | u8 ssid_len, ie_len; |
537 | u8 *ie; |
538 | struct ieee80211_channel *channel; |
539 | enum nl80211_channel_type channel_type; |
540 | |
541 | unsigned long ibss_join_req; |
542 | /* probe response/beacon for IBSS */ |
543 | struct sk_buff __rcu *presp; |
544 | struct sk_buff *skb; |
545 | |
546 | spinlock_t incomplete_lock; |
547 | struct list_head incomplete_stations; |
548 | |
549 | enum { |
550 | IEEE80211_IBSS_MLME_SEARCH, |
551 | IEEE80211_IBSS_MLME_JOINED, |
552 | } state; |
553 | }; |
554 | |
555 | struct ieee80211_if_mesh { |
556 | struct timer_list housekeeping_timer; |
557 | struct timer_list mesh_path_timer; |
558 | struct timer_list mesh_path_root_timer; |
559 | |
560 | unsigned long timers_running; |
561 | |
562 | unsigned long wrkq_flags; |
563 | |
564 | u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; |
565 | size_t mesh_id_len; |
566 | /* Active Path Selection Protocol Identifier */ |
567 | u8 mesh_pp_id; |
568 | /* Active Path Selection Metric Identifier */ |
569 | u8 mesh_pm_id; |
570 | /* Congestion Control Mode Identifier */ |
571 | u8 mesh_cc_id; |
572 | /* Synchronization Protocol Identifier */ |
573 | u8 mesh_sp_id; |
574 | /* Authentication Protocol Identifier */ |
575 | u8 mesh_auth_id; |
576 | /* Local mesh Sequence Number */ |
577 | u32 sn; |
578 | /* Last used PREQ ID */ |
579 | u32 preq_id; |
580 | atomic_t mpaths; |
581 | /* Timestamp of last SN update */ |
582 | unsigned long last_sn_update; |
583 | /* Time when it's ok to send next PERR */ |
584 | unsigned long next_perr; |
585 | /* Timestamp of last PREQ sent */ |
586 | unsigned long last_preq; |
587 | struct mesh_rmc *rmc; |
588 | spinlock_t mesh_preq_queue_lock; |
589 | struct mesh_preq_queue preq_queue; |
590 | int preq_queue_len; |
591 | struct mesh_stats mshstats; |
592 | struct mesh_config mshcfg; |
593 | u32 mesh_seqnum; |
594 | bool accepting_plinks; |
595 | int num_gates; |
596 | const u8 *ie; |
597 | u8 ie_len; |
598 | enum { |
599 | IEEE80211_MESH_SEC_NONE = 0x0, |
600 | IEEE80211_MESH_SEC_AUTHED = 0x1, |
601 | IEEE80211_MESH_SEC_SECURED = 0x2, |
602 | } security; |
603 | }; |
604 | |
605 | #ifdef CONFIG_MAC80211_MESH |
606 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ |
607 | do { (msh)->mshstats.name++; } while (0) |
608 | #else |
609 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ |
610 | do { } while (0) |
611 | #endif |
612 | |
613 | /** |
614 | * enum ieee80211_sub_if_data_flags - virtual interface flags |
615 | * |
616 | * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets |
617 | * @IEEE80211_SDATA_PROMISC: interface is promisc |
618 | * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode |
619 | * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between |
620 | * associated stations and deliver multicast frames both |
621 | * back to wireless media and to the local net stack. |
622 | * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. |
623 | * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver |
624 | */ |
625 | enum ieee80211_sub_if_data_flags { |
626 | IEEE80211_SDATA_ALLMULTI = BIT(0), |
627 | IEEE80211_SDATA_PROMISC = BIT(1), |
628 | IEEE80211_SDATA_OPERATING_GMODE = BIT(2), |
629 | IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), |
630 | IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), |
631 | IEEE80211_SDATA_IN_DRIVER = BIT(5), |
632 | }; |
633 | |
634 | /** |
635 | * enum ieee80211_sdata_state_bits - virtual interface state bits |
636 | * @SDATA_STATE_RUNNING: virtual interface is up & running; this |
637 | * mirrors netif_running() but is separate for interface type |
638 | * change handling while the interface is up |
639 | * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel |
640 | * mode, so queues are stopped |
641 | */ |
642 | enum ieee80211_sdata_state_bits { |
643 | SDATA_STATE_RUNNING, |
644 | SDATA_STATE_OFFCHANNEL, |
645 | }; |
646 | |
647 | struct ieee80211_sub_if_data { |
648 | struct list_head list; |
649 | |
650 | struct wireless_dev wdev; |
651 | |
652 | /* keys */ |
653 | struct list_head key_list; |
654 | |
655 | /* count for keys needing tailroom space allocation */ |
656 | int crypto_tx_tailroom_needed_cnt; |
657 | |
658 | struct net_device *dev; |
659 | struct ieee80211_local *local; |
660 | |
661 | unsigned int flags; |
662 | |
663 | unsigned long state; |
664 | |
665 | int drop_unencrypted; |
666 | |
667 | char name[IFNAMSIZ]; |
668 | |
669 | /* |
670 | * keep track of whether the HT opmode (stored in |
671 | * vif.bss_info.ht_operation_mode) is valid. |
672 | */ |
673 | bool ht_opmode_valid; |
674 | |
675 | /* to detect idle changes */ |
676 | bool old_idle; |
677 | |
678 | /* Fragment table for host-based reassembly */ |
679 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; |
680 | unsigned int fragment_next; |
681 | |
682 | /* TID bitmap for NoAck policy */ |
683 | u16 noack_map; |
684 | |
685 | struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; |
686 | struct ieee80211_key __rcu *default_unicast_key; |
687 | struct ieee80211_key __rcu *default_multicast_key; |
688 | struct ieee80211_key __rcu *default_mgmt_key; |
689 | |
690 | u16 sequence_number; |
691 | __be16 control_port_protocol; |
692 | bool control_port_no_encrypt; |
693 | |
694 | struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES]; |
695 | |
696 | struct work_struct work; |
697 | struct sk_buff_head skb_queue; |
698 | |
699 | bool arp_filter_state; |
700 | |
701 | /* |
702 | * AP this belongs to: self in AP mode and |
703 | * corresponding AP in VLAN mode, NULL for |
704 | * all others (might be needed later in IBSS) |
705 | */ |
706 | struct ieee80211_if_ap *bss; |
707 | |
708 | /* bitmap of allowed (non-MCS) rate indexes for rate control */ |
709 | u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; |
710 | u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; |
711 | |
712 | union { |
713 | struct ieee80211_if_ap ap; |
714 | struct ieee80211_if_wds wds; |
715 | struct ieee80211_if_vlan vlan; |
716 | struct ieee80211_if_managed mgd; |
717 | struct ieee80211_if_ibss ibss; |
718 | struct ieee80211_if_mesh mesh; |
719 | u32 mntr_flags; |
720 | } u; |
721 | |
722 | #ifdef CONFIG_MAC80211_DEBUGFS |
723 | struct { |
724 | struct dentry *dir; |
725 | struct dentry *subdir_stations; |
726 | struct dentry *default_unicast_key; |
727 | struct dentry *default_multicast_key; |
728 | struct dentry *default_mgmt_key; |
729 | } debugfs; |
730 | #endif |
731 | /* must be last, dynamically sized area in this! */ |
732 | struct ieee80211_vif vif; |
733 | }; |
734 | |
735 | static inline |
736 | struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) |
737 | { |
738 | return container_of(p, struct ieee80211_sub_if_data, vif); |
739 | } |
740 | |
741 | enum sdata_queue_type { |
742 | IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, |
743 | IEEE80211_SDATA_QUEUE_AGG_START = 1, |
744 | IEEE80211_SDATA_QUEUE_AGG_STOP = 2, |
745 | }; |
746 | |
747 | enum { |
748 | IEEE80211_RX_MSG = 1, |
749 | IEEE80211_TX_STATUS_MSG = 2, |
750 | IEEE80211_EOSP_MSG = 3, |
751 | }; |
752 | |
753 | struct skb_eosp_msg_data { |
754 | u8 sta[ETH_ALEN], iface[ETH_ALEN]; |
755 | }; |
756 | |
757 | enum queue_stop_reason { |
758 | IEEE80211_QUEUE_STOP_REASON_DRIVER, |
759 | IEEE80211_QUEUE_STOP_REASON_PS, |
760 | IEEE80211_QUEUE_STOP_REASON_CSA, |
761 | IEEE80211_QUEUE_STOP_REASON_AGGREGATION, |
762 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
763 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, |
764 | IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE, |
765 | }; |
766 | |
767 | #ifdef CONFIG_MAC80211_LEDS |
768 | struct tpt_led_trigger { |
769 | struct led_trigger trig; |
770 | char name[32]; |
771 | const struct ieee80211_tpt_blink *blink_table; |
772 | unsigned int blink_table_len; |
773 | struct timer_list timer; |
774 | unsigned long prev_traffic; |
775 | unsigned long tx_bytes, rx_bytes; |
776 | unsigned int active, want; |
777 | bool running; |
778 | }; |
779 | #endif |
780 | |
781 | /** |
782 | * mac80211 scan flags - currently active scan mode |
783 | * |
784 | * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as |
785 | * well be on the operating channel |
786 | * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to |
787 | * determine if we are on the operating channel or not |
788 | * @SCAN_COMPLETED: Set for our scan work function when the driver reported |
789 | * that the scan completed. |
790 | * @SCAN_ABORTED: Set for our scan work function when the driver reported |
791 | * a scan complete for an aborted scan. |
792 | */ |
793 | enum { |
794 | SCAN_SW_SCANNING, |
795 | SCAN_HW_SCANNING, |
796 | SCAN_COMPLETED, |
797 | SCAN_ABORTED, |
798 | }; |
799 | |
800 | /** |
801 | * enum mac80211_scan_state - scan state machine states |
802 | * |
803 | * @SCAN_DECISION: Main entry point to the scan state machine, this state |
804 | * determines if we should keep on scanning or switch back to the |
805 | * operating channel |
806 | * @SCAN_SET_CHANNEL: Set the next channel to be scanned |
807 | * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses |
808 | * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to |
809 | * send out data |
810 | * @SCAN_RESUME: Resume the scan and scan the next channel |
811 | */ |
812 | enum mac80211_scan_state { |
813 | SCAN_DECISION, |
814 | SCAN_SET_CHANNEL, |
815 | SCAN_SEND_PROBE, |
816 | SCAN_SUSPEND, |
817 | SCAN_RESUME, |
818 | }; |
819 | |
820 | struct ieee80211_local { |
821 | /* embed the driver visible part. |
822 | * don't cast (use the static inlines below), but we keep |
823 | * it first anyway so they become a no-op */ |
824 | struct ieee80211_hw hw; |
825 | |
826 | const struct ieee80211_ops *ops; |
827 | |
828 | /* |
829 | * work stuff, potentially off-channel (in the future) |
830 | */ |
831 | struct list_head work_list; |
832 | struct timer_list work_timer; |
833 | struct work_struct work_work; |
834 | |
835 | /* |
836 | * private workqueue to mac80211. mac80211 makes this accessible |
837 | * via ieee80211_queue_work() |
838 | */ |
839 | struct workqueue_struct *workqueue; |
840 | |
841 | unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; |
842 | /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ |
843 | spinlock_t queue_stop_reason_lock; |
844 | |
845 | int open_count; |
846 | int monitors, cooked_mntrs; |
847 | /* number of interfaces with corresponding FIF_ flags */ |
848 | int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, |
849 | fif_probe_req; |
850 | int probe_req_reg; |
851 | unsigned int filter_flags; /* FIF_* */ |
852 | |
853 | bool wiphy_ciphers_allocated; |
854 | |
855 | /* protects the aggregated multicast list and filter calls */ |
856 | spinlock_t filter_lock; |
857 | |
858 | /* used for uploading changed mc list */ |
859 | struct work_struct reconfig_filter; |
860 | |
861 | /* used to reconfigure hardware SM PS */ |
862 | struct work_struct recalc_smps; |
863 | |
864 | /* aggregated multicast list */ |
865 | struct netdev_hw_addr_list mc_list; |
866 | |
867 | bool tim_in_locked_section; /* see ieee80211_beacon_get() */ |
868 | |
869 | /* |
870 | * suspended is true if we finished all the suspend _and_ we have |
871 | * not yet come up from resume. This is to be used by mac80211 |
872 | * to ensure driver sanity during suspend and mac80211's own |
873 | * sanity. It can eventually be used for WoW as well. |
874 | */ |
875 | bool suspended; |
876 | |
877 | /* |
878 | * Resuming is true while suspended, but when we're reprogramming the |
879 | * hardware -- at that time it's allowed to use ieee80211_queue_work() |
880 | * again even though some other parts of the stack are still suspended |
881 | * and we still drop received frames to avoid waking the stack. |
882 | */ |
883 | bool resuming; |
884 | |
885 | /* |
886 | * quiescing is true during the suspend process _only_ to |
887 | * ease timer cancelling etc. |
888 | */ |
889 | bool quiescing; |
890 | |
891 | /* device is started */ |
892 | bool started; |
893 | |
894 | /* wowlan is enabled -- don't reconfig on resume */ |
895 | bool wowlan; |
896 | |
897 | int tx_headroom; /* required headroom for hardware/radiotap */ |
898 | |
899 | /* Tasklet and skb queue to process calls from IRQ mode. All frames |
900 | * added to skb_queue will be processed, but frames in |
901 | * skb_queue_unreliable may be dropped if the total length of these |
902 | * queues increases over the limit. */ |
903 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 |
904 | struct tasklet_struct tasklet; |
905 | struct sk_buff_head skb_queue; |
906 | struct sk_buff_head skb_queue_unreliable; |
907 | |
908 | /* |
909 | * Internal FIFO queue which is shared between multiple rx path |
910 | * stages. Its main task is to provide a serialization mechanism, |
911 | * so all rx handlers can enjoy having exclusive access to their |
912 | * private data structures. |
913 | */ |
914 | struct sk_buff_head rx_skb_queue; |
915 | bool running_rx_handler; /* protected by rx_skb_queue.lock */ |
916 | |
917 | /* Station data */ |
918 | /* |
919 | * The mutex only protects the list, hash table and |
920 | * counter, reads are done with RCU. |
921 | */ |
922 | struct mutex sta_mtx; |
923 | spinlock_t tim_lock; |
924 | unsigned long num_sta; |
925 | struct list_head sta_list; |
926 | struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; |
927 | struct timer_list sta_cleanup; |
928 | int sta_generation; |
929 | |
930 | struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; |
931 | struct tasklet_struct tx_pending_tasklet; |
932 | |
933 | atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; |
934 | |
935 | /* number of interfaces with corresponding IFF_ flags */ |
936 | atomic_t iff_allmultis, iff_promiscs; |
937 | |
938 | struct rate_control_ref *rate_ctrl; |
939 | |
940 | struct crypto_cipher *wep_tx_tfm; |
941 | struct crypto_cipher *wep_rx_tfm; |
942 | u32 wep_iv; |
943 | |
944 | /* see iface.c */ |
945 | struct list_head interfaces; |
946 | struct mutex iflist_mtx; |
947 | |
948 | /* |
949 | * Key mutex, protects sdata's key_list and sta_info's |
950 | * key pointers (write access, they're RCU.) |
951 | */ |
952 | struct mutex key_mtx; |
953 | |
954 | /* mutex for scan and work locking */ |
955 | struct mutex mtx; |
956 | |
957 | /* Scanning and BSS list */ |
958 | unsigned long scanning; |
959 | struct cfg80211_ssid scan_ssid; |
960 | struct cfg80211_scan_request *int_scan_req; |
961 | struct cfg80211_scan_request *scan_req, *hw_scan_req; |
962 | struct ieee80211_channel *scan_channel; |
963 | enum ieee80211_band hw_scan_band; |
964 | int scan_channel_idx; |
965 | int scan_ies_len; |
966 | |
967 | bool sched_scanning; |
968 | struct ieee80211_sched_scan_ies sched_scan_ies; |
969 | struct work_struct sched_scan_stopped_work; |
970 | |
971 | unsigned long leave_oper_channel_time; |
972 | enum mac80211_scan_state next_scan_state; |
973 | struct delayed_work scan_work; |
974 | struct ieee80211_sub_if_data *scan_sdata; |
975 | enum nl80211_channel_type _oper_channel_type; |
976 | struct ieee80211_channel *oper_channel, *csa_channel; |
977 | |
978 | /* Temporary remain-on-channel for off-channel operations */ |
979 | struct ieee80211_channel *tmp_channel; |
980 | enum nl80211_channel_type tmp_channel_type; |
981 | |
982 | /* SNMP counters */ |
983 | /* dot11CountersTable */ |
984 | u32 dot11TransmittedFragmentCount; |
985 | u32 dot11MulticastTransmittedFrameCount; |
986 | u32 dot11FailedCount; |
987 | u32 dot11RetryCount; |
988 | u32 dot11MultipleRetryCount; |
989 | u32 dot11FrameDuplicateCount; |
990 | u32 dot11ReceivedFragmentCount; |
991 | u32 dot11MulticastReceivedFrameCount; |
992 | u32 dot11TransmittedFrameCount; |
993 | |
994 | #ifdef CONFIG_MAC80211_LEDS |
995 | int tx_led_counter, rx_led_counter; |
996 | struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; |
997 | struct tpt_led_trigger *tpt_led_trigger; |
998 | char tx_led_name[32], rx_led_name[32], |
999 | assoc_led_name[32], radio_led_name[32]; |
1000 | #endif |
1001 | |
1002 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
1003 | /* TX/RX handler statistics */ |
1004 | unsigned int tx_handlers_drop; |
1005 | unsigned int tx_handlers_queued; |
1006 | unsigned int tx_handlers_drop_unencrypted; |
1007 | unsigned int tx_handlers_drop_fragment; |
1008 | unsigned int tx_handlers_drop_wep; |
1009 | unsigned int tx_handlers_drop_not_assoc; |
1010 | unsigned int tx_handlers_drop_unauth_port; |
1011 | unsigned int rx_handlers_drop; |
1012 | unsigned int rx_handlers_queued; |
1013 | unsigned int rx_handlers_drop_nullfunc; |
1014 | unsigned int rx_handlers_drop_defrag; |
1015 | unsigned int rx_handlers_drop_short; |
1016 | unsigned int rx_handlers_drop_passive_scan; |
1017 | unsigned int tx_expand_skb_head; |
1018 | unsigned int tx_expand_skb_head_cloned; |
1019 | unsigned int rx_expand_skb_head; |
1020 | unsigned int rx_expand_skb_head2; |
1021 | unsigned int rx_handlers_fragments; |
1022 | unsigned int tx_status_drop; |
1023 | #define I802_DEBUG_INC(c) (c)++ |
1024 | #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ |
1025 | #define I802_DEBUG_INC(c) do { } while (0) |
1026 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ |
1027 | |
1028 | |
1029 | int total_ps_buffered; /* total number of all buffered unicast and |
1030 | * multicast packets for power saving stations |
1031 | */ |
1032 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ |
1033 | |
1034 | bool pspolling; |
1035 | bool offchannel_ps_enabled; |
1036 | /* |
1037 | * PS can only be enabled when we have exactly one managed |
1038 | * interface (and monitors) in PS, this then points there. |
1039 | */ |
1040 | struct ieee80211_sub_if_data *ps_sdata; |
1041 | struct work_struct dynamic_ps_enable_work; |
1042 | struct work_struct dynamic_ps_disable_work; |
1043 | struct timer_list dynamic_ps_timer; |
1044 | struct notifier_block network_latency_notifier; |
1045 | struct notifier_block ifa_notifier; |
1046 | |
1047 | /* |
1048 | * The dynamic ps timeout configured from user space via WEXT - |
1049 | * this will override whatever chosen by mac80211 internally. |
1050 | */ |
1051 | int dynamic_ps_forced_timeout; |
1052 | int dynamic_ps_user_timeout; |
1053 | bool disable_dynamic_ps; |
1054 | |
1055 | int user_power_level; /* in dBm */ |
1056 | int power_constr_level; /* in dBm */ |
1057 | |
1058 | enum ieee80211_smps_mode smps_mode; |
1059 | |
1060 | struct work_struct restart_work; |
1061 | |
1062 | #ifdef CONFIG_MAC80211_DEBUGFS |
1063 | struct local_debugfsdentries { |
1064 | struct dentry *rcdir; |
1065 | struct dentry *keys; |
1066 | } debugfs; |
1067 | #endif |
1068 | |
1069 | struct ieee80211_channel *hw_roc_channel; |
1070 | struct net_device *hw_roc_dev; |
1071 | struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; |
1072 | struct work_struct hw_roc_start, hw_roc_done; |
1073 | enum nl80211_channel_type hw_roc_channel_type; |
1074 | unsigned int hw_roc_duration; |
1075 | u32 hw_roc_cookie; |
1076 | bool hw_roc_for_tx; |
1077 | |
1078 | struct idr ack_status_frames; |
1079 | spinlock_t ack_status_lock; |
1080 | |
1081 | /* dummy netdev for use w/ NAPI */ |
1082 | struct net_device napi_dev; |
1083 | |
1084 | struct napi_struct napi; |
1085 | }; |
1086 | |
1087 | static inline struct ieee80211_sub_if_data * |
1088 | IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) |
1089 | { |
1090 | return netdev_priv(dev); |
1091 | } |
1092 | |
1093 | /* this struct represents 802.11n's RA/TID combination */ |
1094 | struct ieee80211_ra_tid { |
1095 | u8 ra[ETH_ALEN]; |
1096 | u16 tid; |
1097 | }; |
1098 | |
1099 | /* Parsed Information Elements */ |
1100 | struct ieee802_11_elems { |
1101 | u8 *ie_start; |
1102 | size_t total_len; |
1103 | |
1104 | /* pointers to IEs */ |
1105 | u8 *ssid; |
1106 | u8 *supp_rates; |
1107 | u8 *fh_params; |
1108 | u8 *ds_params; |
1109 | u8 *cf_params; |
1110 | struct ieee80211_tim_ie *tim; |
1111 | u8 *ibss_params; |
1112 | u8 *challenge; |
1113 | u8 *wpa; |
1114 | u8 *rsn; |
1115 | u8 *erp_info; |
1116 | u8 *ext_supp_rates; |
1117 | u8 *wmm_info; |
1118 | u8 *wmm_param; |
1119 | struct ieee80211_ht_cap *ht_cap_elem; |
1120 | struct ieee80211_ht_info *ht_info_elem; |
1121 | struct ieee80211_meshconf_ie *mesh_config; |
1122 | u8 *mesh_id; |
1123 | u8 *peering; |
1124 | u8 *preq; |
1125 | u8 *prep; |
1126 | u8 *perr; |
1127 | struct ieee80211_rann_ie *rann; |
1128 | u8 *ch_switch_elem; |
1129 | u8 *country_elem; |
1130 | u8 *pwr_constr_elem; |
1131 | u8 *quiet_elem; /* first quite element */ |
1132 | u8 *timeout_int; |
1133 | |
1134 | /* length of them, respectively */ |
1135 | u8 ssid_len; |
1136 | u8 supp_rates_len; |
1137 | u8 fh_params_len; |
1138 | u8 ds_params_len; |
1139 | u8 cf_params_len; |
1140 | u8 tim_len; |
1141 | u8 ibss_params_len; |
1142 | u8 challenge_len; |
1143 | u8 wpa_len; |
1144 | u8 rsn_len; |
1145 | u8 erp_info_len; |
1146 | u8 ext_supp_rates_len; |
1147 | u8 wmm_info_len; |
1148 | u8 wmm_param_len; |
1149 | u8 mesh_id_len; |
1150 | u8 peering_len; |
1151 | u8 preq_len; |
1152 | u8 prep_len; |
1153 | u8 perr_len; |
1154 | u8 ch_switch_elem_len; |
1155 | u8 country_elem_len; |
1156 | u8 pwr_constr_elem_len; |
1157 | u8 quiet_elem_len; |
1158 | u8 num_of_quiet_elem; /* can be more the one */ |
1159 | u8 timeout_int_len; |
1160 | |
1161 | /* whether a parse error occurred while retrieving these elements */ |
1162 | bool parse_error; |
1163 | }; |
1164 | |
1165 | static inline struct ieee80211_local *hw_to_local( |
1166 | struct ieee80211_hw *hw) |
1167 | { |
1168 | return container_of(hw, struct ieee80211_local, hw); |
1169 | } |
1170 | |
1171 | |
1172 | static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) |
1173 | { |
1174 | return compare_ether_addr(raddr, addr) == 0 || |
1175 | is_broadcast_ether_addr(raddr); |
1176 | } |
1177 | |
1178 | |
1179 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); |
1180 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); |
1181 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1182 | u32 changed); |
1183 | void ieee80211_configure_filter(struct ieee80211_local *local); |
1184 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); |
1185 | |
1186 | /* STA code */ |
1187 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); |
1188 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, |
1189 | struct cfg80211_auth_request *req); |
1190 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
1191 | struct cfg80211_assoc_request *req); |
1192 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
1193 | struct cfg80211_deauth_request *req); |
1194 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
1195 | struct cfg80211_disassoc_request *req); |
1196 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
1197 | struct ieee80211_sub_if_data *sdata); |
1198 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); |
1199 | int ieee80211_max_network_latency(struct notifier_block *nb, |
1200 | unsigned long data, void *dummy); |
1201 | int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); |
1202 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
1203 | struct ieee80211_channel_sw_ie *sw_elem, |
1204 | struct ieee80211_bss *bss, |
1205 | u64 timestamp); |
1206 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); |
1207 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); |
1208 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); |
1209 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
1210 | struct sk_buff *skb); |
1211 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); |
1212 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); |
1213 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); |
1214 | |
1215 | /* IBSS code */ |
1216 | void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); |
1217 | void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); |
1218 | void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, |
1219 | const u8 *bssid, const u8 *addr, u32 supp_rates); |
1220 | int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, |
1221 | struct cfg80211_ibss_params *params); |
1222 | int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); |
1223 | void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); |
1224 | void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); |
1225 | void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); |
1226 | void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
1227 | struct sk_buff *skb); |
1228 | |
1229 | /* mesh code */ |
1230 | void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); |
1231 | void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
1232 | struct sk_buff *skb); |
1233 | |
1234 | /* scan/BSS handling */ |
1235 | void ieee80211_scan_work(struct work_struct *work); |
1236 | int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, |
1237 | const u8 *ssid, u8 ssid_len, |
1238 | struct ieee80211_channel *chan); |
1239 | int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, |
1240 | struct cfg80211_scan_request *req); |
1241 | void ieee80211_scan_cancel(struct ieee80211_local *local); |
1242 | ieee80211_rx_result |
1243 | ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); |
1244 | |
1245 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); |
1246 | struct ieee80211_bss * |
1247 | ieee80211_bss_info_update(struct ieee80211_local *local, |
1248 | struct ieee80211_rx_status *rx_status, |
1249 | struct ieee80211_mgmt *mgmt, |
1250 | size_t len, |
1251 | struct ieee802_11_elems *elems, |
1252 | struct ieee80211_channel *channel, |
1253 | bool beacon); |
1254 | struct ieee80211_bss * |
1255 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, |
1256 | u8 *ssid, u8 ssid_len); |
1257 | void ieee80211_rx_bss_put(struct ieee80211_local *local, |
1258 | struct ieee80211_bss *bss); |
1259 | |
1260 | /* scheduled scan handling */ |
1261 | int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, |
1262 | struct cfg80211_sched_scan_request *req); |
1263 | int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); |
1264 | void ieee80211_sched_scan_stopped_work(struct work_struct *work); |
1265 | |
1266 | /* off-channel helpers */ |
1267 | void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, |
1268 | bool offchannel_ps_enable); |
1269 | void ieee80211_offchannel_return(struct ieee80211_local *local, |
1270 | bool offchannel_ps_disable); |
1271 | void ieee80211_hw_roc_setup(struct ieee80211_local *local); |
1272 | |
1273 | /* interface handling */ |
1274 | int ieee80211_iface_init(void); |
1275 | void ieee80211_iface_exit(void); |
1276 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
1277 | struct net_device **new_dev, enum nl80211_iftype type, |
1278 | struct vif_params *params); |
1279 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
1280 | enum nl80211_iftype type); |
1281 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); |
1282 | void ieee80211_remove_interfaces(struct ieee80211_local *local); |
1283 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local); |
1284 | void ieee80211_recalc_idle(struct ieee80211_local *local); |
1285 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
1286 | const int offset); |
1287 | |
1288 | static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) |
1289 | { |
1290 | return test_bit(SDATA_STATE_RUNNING, &sdata->state); |
1291 | } |
1292 | |
1293 | /* tx handling */ |
1294 | void ieee80211_clear_tx_pending(struct ieee80211_local *local); |
1295 | void ieee80211_tx_pending(unsigned long data); |
1296 | netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, |
1297 | struct net_device *dev); |
1298 | netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, |
1299 | struct net_device *dev); |
1300 | |
1301 | /* HT */ |
1302 | bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata); |
1303 | void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, |
1304 | struct ieee80211_sta_ht_cap *ht_cap); |
1305 | void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, |
1306 | struct ieee80211_supported_band *sband, |
1307 | struct ieee80211_ht_cap *ht_cap_ie, |
1308 | struct ieee80211_sta_ht_cap *ht_cap); |
1309 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, |
1310 | const u8 *da, u16 tid, |
1311 | u16 initiator, u16 reason_code); |
1312 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, |
1313 | enum ieee80211_smps_mode smps, const u8 *da, |
1314 | const u8 *bssid); |
1315 | void ieee80211_request_smps_work(struct work_struct *work); |
1316 | |
1317 | void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, |
1318 | u16 initiator, u16 reason, bool stop); |
1319 | void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, |
1320 | u16 initiator, u16 reason, bool stop); |
1321 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); |
1322 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, |
1323 | struct sta_info *sta, |
1324 | struct ieee80211_mgmt *mgmt, size_t len); |
1325 | void ieee80211_process_addba_resp(struct ieee80211_local *local, |
1326 | struct sta_info *sta, |
1327 | struct ieee80211_mgmt *mgmt, |
1328 | size_t len); |
1329 | void ieee80211_process_addba_request(struct ieee80211_local *local, |
1330 | struct sta_info *sta, |
1331 | struct ieee80211_mgmt *mgmt, |
1332 | size_t len); |
1333 | |
1334 | int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, |
1335 | enum ieee80211_back_parties initiator, |
1336 | bool tx); |
1337 | int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, |
1338 | enum ieee80211_back_parties initiator, |
1339 | bool tx); |
1340 | void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); |
1341 | void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); |
1342 | void ieee80211_ba_session_work(struct work_struct *work); |
1343 | void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); |
1344 | void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); |
1345 | |
1346 | /* Spectrum management */ |
1347 | void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, |
1348 | struct ieee80211_mgmt *mgmt, |
1349 | size_t len); |
1350 | |
1351 | /* Suspend/resume and hw reconfiguration */ |
1352 | int ieee80211_reconfig(struct ieee80211_local *local); |
1353 | void ieee80211_stop_device(struct ieee80211_local *local); |
1354 | |
1355 | #ifdef CONFIG_PM |
1356 | int __ieee80211_suspend(struct ieee80211_hw *hw, |
1357 | struct cfg80211_wowlan *wowlan); |
1358 | |
1359 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) |
1360 | { |
1361 | struct ieee80211_local *local = hw_to_local(hw); |
1362 | |
1363 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
1364 | "%s: resume with hardware scan still in progress\n", |
1365 | wiphy_name(hw->wiphy)); |
1366 | |
1367 | return ieee80211_reconfig(hw_to_local(hw)); |
1368 | } |
1369 | #else |
1370 | static inline int __ieee80211_suspend(struct ieee80211_hw *hw, |
1371 | struct cfg80211_wowlan *wowlan) |
1372 | { |
1373 | return 0; |
1374 | } |
1375 | |
1376 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) |
1377 | { |
1378 | return 0; |
1379 | } |
1380 | #endif |
1381 | |
1382 | /* utility functions/constants */ |
1383 | extern void *mac80211_wiphy_privid; /* for wiphy privid */ |
1384 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, |
1385 | enum nl80211_iftype type); |
1386 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, |
1387 | int rate, int erp, int short_preamble); |
1388 | void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, |
1389 | struct ieee80211_hdr *hdr, const u8 *tsc, |
1390 | gfp_t gfp); |
1391 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, |
1392 | bool bss_notify); |
1393 | void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); |
1394 | |
1395 | void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, |
1396 | struct sk_buff *skb, int tid); |
1397 | static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, |
1398 | struct sk_buff *skb) |
1399 | { |
1400 | /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ |
1401 | ieee80211_tx_skb_tid(sdata, skb, 7); |
1402 | } |
1403 | |
1404 | void ieee802_11_parse_elems(u8 *start, size_t len, |
1405 | struct ieee802_11_elems *elems); |
1406 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, |
1407 | struct ieee802_11_elems *elems, |
1408 | u64 filter, u32 crc); |
1409 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, |
1410 | enum ieee80211_band band); |
1411 | |
1412 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work); |
1413 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work); |
1414 | void ieee80211_dynamic_ps_timer(unsigned long data); |
1415 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
1416 | struct ieee80211_sub_if_data *sdata, |
1417 | int powersave); |
1418 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1419 | struct ieee80211_hdr *hdr); |
1420 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
1421 | struct ieee80211_hdr *hdr, bool ack); |
1422 | void ieee80211_beacon_connection_loss_work(struct work_struct *work); |
1423 | |
1424 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, |
1425 | enum queue_stop_reason reason); |
1426 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, |
1427 | enum queue_stop_reason reason); |
1428 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, |
1429 | enum queue_stop_reason reason); |
1430 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, |
1431 | enum queue_stop_reason reason); |
1432 | void ieee80211_add_pending_skb(struct ieee80211_local *local, |
1433 | struct sk_buff *skb); |
1434 | void ieee80211_add_pending_skbs(struct ieee80211_local *local, |
1435 | struct sk_buff_head *skbs); |
1436 | void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, |
1437 | struct sk_buff_head *skbs, |
1438 | void (*fn)(void *data), void *data); |
1439 | |
1440 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, |
1441 | u16 transaction, u16 auth_alg, |
1442 | u8 *extra, size_t extra_len, const u8 *bssid, |
1443 | const u8 *da, const u8 *key, u8 key_len, u8 key_idx); |
1444 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, |
1445 | const u8 *ie, size_t ie_len, |
1446 | enum ieee80211_band band, u32 rate_mask, |
1447 | u8 channel); |
1448 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, |
1449 | u8 *dst, u32 ratemask, |
1450 | const u8 *ssid, size_t ssid_len, |
1451 | const u8 *ie, size_t ie_len, |
1452 | bool directed); |
1453 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
1454 | const u8 *ssid, size_t ssid_len, |
1455 | const u8 *ie, size_t ie_len, |
1456 | u32 ratemask, bool directed, bool no_cck); |
1457 | |
1458 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
1459 | const size_t supp_rates_len, |
1460 | const u8 *supp_rates); |
1461 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, |
1462 | struct ieee802_11_elems *elems, |
1463 | enum ieee80211_band band); |
1464 | int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, |
1465 | enum ieee80211_smps_mode smps_mode); |
1466 | void ieee80211_recalc_smps(struct ieee80211_local *local); |
1467 | |
1468 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, |
1469 | const u8 *ids, int n_ids, size_t offset); |
1470 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); |
1471 | u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, |
1472 | u16 cap); |
1473 | u8 *ieee80211_ie_build_ht_info(u8 *pos, |
1474 | struct ieee80211_sta_ht_cap *ht_cap, |
1475 | struct ieee80211_channel *channel, |
1476 | enum nl80211_channel_type channel_type); |
1477 | |
1478 | /* internal work items */ |
1479 | void ieee80211_work_init(struct ieee80211_local *local); |
1480 | void ieee80211_add_work(struct ieee80211_work *wk); |
1481 | void free_work(struct ieee80211_work *wk); |
1482 | void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); |
1483 | int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, |
1484 | struct ieee80211_channel *chan, |
1485 | enum nl80211_channel_type channel_type, |
1486 | unsigned int duration, u64 *cookie); |
1487 | int ieee80211_wk_cancel_remain_on_channel( |
1488 | struct ieee80211_sub_if_data *sdata, u64 cookie); |
1489 | |
1490 | /* channel management */ |
1491 | enum ieee80211_chan_mode { |
1492 | CHAN_MODE_UNDEFINED, |
1493 | CHAN_MODE_HOPPING, |
1494 | CHAN_MODE_FIXED, |
1495 | }; |
1496 | |
1497 | enum ieee80211_chan_mode |
1498 | ieee80211_get_channel_mode(struct ieee80211_local *local, |
1499 | struct ieee80211_sub_if_data *ignore); |
1500 | bool ieee80211_set_channel_type(struct ieee80211_local *local, |
1501 | struct ieee80211_sub_if_data *sdata, |
1502 | enum nl80211_channel_type chantype); |
1503 | enum nl80211_channel_type |
1504 | ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info); |
1505 | enum nl80211_channel_type ieee80211_get_tx_channel_type( |
1506 | struct ieee80211_local *local, |
1507 | enum nl80211_channel_type channel_type); |
1508 | |
1509 | #ifdef CONFIG_MAC80211_NOINLINE |
1510 | #define debug_noinline noinline |
1511 | #else |
1512 | #define debug_noinline |
1513 | #endif |
1514 | |
1515 | #endif /* IEEE80211_I_H */ |
1516 |
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