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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 <net/ieee80211_radiotap.h> | |
28 | #include <net/cfg80211.h> | |
29 | #include <net/mac80211.h> | |
30 | #include "key.h" | |
31 | #include "sta_info.h" | |
32 | ||
33 | struct ieee80211_local; | |
34 | ||
35 | /* Maximum number of broadcast/multicast frames to buffer when some of the | |
36 | * associated stations are using power saving. */ | |
37 | #define AP_MAX_BC_BUFFER 128 | |
38 | ||
39 | /* Maximum number of frames buffered to all STAs, including multicast frames. | |
40 | * Note: increasing this limit increases the potential memory requirement. Each | |
41 | * frame can be up to about 2 kB long. */ | |
42 | #define TOTAL_MAX_TX_BUFFER 512 | |
43 | ||
44 | /* Required encryption head and tailroom */ | |
45 | #define IEEE80211_ENCRYPT_HEADROOM 8 | |
46 | #define IEEE80211_ENCRYPT_TAILROOM 18 | |
47 | ||
48 | /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent | |
49 | * reception of at least three fragmented frames. This limit can be increased | |
50 | * by changing this define, at the cost of slower frame reassembly and | |
51 | * increased memory use (about 2 kB of RAM per entry). */ | |
52 | #define IEEE80211_FRAGMENT_MAX 4 | |
53 | ||
54 | #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) | |
55 | ||
56 | #define IEEE80211_DEFAULT_UAPSD_QUEUES \ | |
57 | (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ | |
58 | IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ | |
59 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ | |
60 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) | |
61 | ||
62 | #define IEEE80211_DEFAULT_MAX_SP_LEN \ | |
63 | IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL | |
64 | ||
65 | struct ieee80211_fragment_entry { | |
66 | unsigned long first_frag_time; | |
67 | unsigned int seq; | |
68 | unsigned int rx_queue; | |
69 | unsigned int last_frag; | |
70 | unsigned int extra_len; | |
71 | struct sk_buff_head skb_list; | |
72 | int ccmp; /* Whether fragments were encrypted with CCMP */ | |
73 | u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ | |
74 | }; | |
75 | ||
76 | ||
77 | struct ieee80211_bss { | |
78 | /* don't want to look up all the time */ | |
79 | size_t ssid_len; | |
80 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
81 | ||
82 | u8 dtim_period; | |
83 | ||
84 | bool wmm_used; | |
85 | bool uapsd_supported; | |
86 | ||
87 | unsigned long last_probe_resp; | |
88 | ||
89 | #ifdef CONFIG_MAC80211_MESH | |
90 | u8 *mesh_id; | |
91 | size_t mesh_id_len; | |
92 | u8 *mesh_cfg; | |
93 | #endif | |
94 | ||
95 | #define IEEE80211_MAX_SUPP_RATES 32 | |
96 | u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; | |
97 | size_t supp_rates_len; | |
98 | ||
99 | /* | |
100 | * During assocation, we save an ERP value from a probe response so | |
101 | * that we can feed ERP info to the driver when handling the | |
102 | * association completes. these fields probably won't be up-to-date | |
103 | * otherwise, you probably don't want to use them. | |
104 | */ | |
105 | bool has_erp_value; | |
106 | u8 erp_value; | |
107 | }; | |
108 | ||
109 | static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) | |
110 | { | |
111 | #ifdef CONFIG_MAC80211_MESH | |
112 | return bss->mesh_cfg; | |
113 | #endif | |
114 | return NULL; | |
115 | } | |
116 | ||
117 | static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) | |
118 | { | |
119 | #ifdef CONFIG_MAC80211_MESH | |
120 | return bss->mesh_id; | |
121 | #endif | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) | |
126 | { | |
127 | #ifdef CONFIG_MAC80211_MESH | |
128 | return bss->mesh_id_len; | |
129 | #endif | |
130 | return 0; | |
131 | } | |
132 | ||
133 | ||
134 | typedef unsigned __bitwise__ ieee80211_tx_result; | |
135 | #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) | |
136 | #define TX_DROP ((__force ieee80211_tx_result) 1u) | |
137 | #define TX_QUEUED ((__force ieee80211_tx_result) 2u) | |
138 | ||
139 | #define IEEE80211_TX_FRAGMENTED BIT(0) | |
140 | #define IEEE80211_TX_UNICAST BIT(1) | |
141 | #define IEEE80211_TX_PS_BUFFERED BIT(2) | |
142 | ||
143 | struct ieee80211_tx_data { | |
144 | struct sk_buff *skb; | |
145 | struct ieee80211_local *local; | |
146 | struct ieee80211_sub_if_data *sdata; | |
147 | struct sta_info *sta; | |
148 | struct ieee80211_key *key; | |
149 | ||
150 | struct ieee80211_channel *channel; | |
151 | ||
152 | u16 ethertype; | |
153 | unsigned int flags; | |
154 | }; | |
155 | ||
156 | ||
157 | typedef unsigned __bitwise__ ieee80211_rx_result; | |
158 | #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) | |
159 | #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) | |
160 | #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) | |
161 | #define RX_QUEUED ((__force ieee80211_rx_result) 3u) | |
162 | ||
163 | /** | |
164 | * enum ieee80211_packet_rx_flags - packet RX flags | |
165 | * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed | |
166 | * (incl. multicast frames) | |
167 | * @IEEE80211_RX_IN_SCAN: received while scanning | |
168 | * @IEEE80211_RX_FRAGMENTED: fragmented frame | |
169 | * @IEEE80211_RX_AMSDU: a-MSDU packet | |
170 | * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed | |
171 | * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering | |
172 | * | |
173 | * These are per-frame flags that are attached to a frame in the | |
174 | * @rx_flags field of &struct ieee80211_rx_status. | |
175 | */ | |
176 | enum ieee80211_packet_rx_flags { | |
177 | IEEE80211_RX_IN_SCAN = BIT(0), | |
178 | IEEE80211_RX_RA_MATCH = BIT(1), | |
179 | IEEE80211_RX_FRAGMENTED = BIT(2), | |
180 | IEEE80211_RX_AMSDU = BIT(3), | |
181 | IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), | |
182 | IEEE80211_RX_DEFERRED_RELEASE = BIT(5), | |
183 | }; | |
184 | ||
185 | /** | |
186 | * enum ieee80211_rx_flags - RX data flags | |
187 | * | |
188 | * @IEEE80211_RX_CMNTR: received on cooked monitor already | |
189 | * | |
190 | * These flags are used across handling multiple interfaces | |
191 | * for a single frame. | |
192 | */ | |
193 | enum ieee80211_rx_flags { | |
194 | IEEE80211_RX_CMNTR = BIT(0), | |
195 | }; | |
196 | ||
197 | struct ieee80211_rx_data { | |
198 | struct sk_buff *skb; | |
199 | struct ieee80211_local *local; | |
200 | struct ieee80211_sub_if_data *sdata; | |
201 | struct sta_info *sta; | |
202 | struct ieee80211_key *key; | |
203 | ||
204 | unsigned int flags; | |
205 | int queue; | |
206 | u32 tkip_iv32; | |
207 | u16 tkip_iv16; | |
208 | }; | |
209 | ||
210 | struct beacon_data { | |
211 | u8 *head, *tail; | |
212 | int head_len, tail_len; | |
213 | int dtim_period; | |
214 | }; | |
215 | ||
216 | struct ieee80211_if_ap { | |
217 | struct beacon_data *beacon; | |
218 | ||
219 | struct list_head vlans; | |
220 | ||
221 | /* yes, this looks ugly, but guarantees that we can later use | |
222 | * bitmap_empty :) | |
223 | * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ | |
224 | u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; | |
225 | struct sk_buff_head ps_bc_buf; | |
226 | atomic_t num_sta_ps; /* number of stations in PS mode */ | |
227 | int dtim_count; | |
228 | bool dtim_bc_mc; | |
229 | }; | |
230 | ||
231 | struct ieee80211_if_wds { | |
232 | struct sta_info *sta; | |
233 | u8 remote_addr[ETH_ALEN]; | |
234 | }; | |
235 | ||
236 | struct ieee80211_if_vlan { | |
237 | struct list_head list; | |
238 | ||
239 | /* used for all tx if the VLAN is configured to 4-addr mode */ | |
240 | struct sta_info *sta; | |
241 | }; | |
242 | ||
243 | struct mesh_stats { | |
244 | __u32 fwded_mcast; /* Mesh forwarded multicast frames */ | |
245 | __u32 fwded_unicast; /* Mesh forwarded unicast frames */ | |
246 | __u32 fwded_frames; /* Mesh total forwarded frames */ | |
247 | __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ | |
248 | __u32 dropped_frames_no_route; /* Not transmitted, no route found */ | |
249 | atomic_t estab_plinks; | |
250 | }; | |
251 | ||
252 | #define PREQ_Q_F_START 0x1 | |
253 | #define PREQ_Q_F_REFRESH 0x2 | |
254 | struct mesh_preq_queue { | |
255 | struct list_head list; | |
256 | u8 dst[ETH_ALEN]; | |
257 | u8 flags; | |
258 | }; | |
259 | ||
260 | enum ieee80211_work_type { | |
261 | IEEE80211_WORK_ABORT, | |
262 | IEEE80211_WORK_DIRECT_PROBE, | |
263 | IEEE80211_WORK_AUTH, | |
264 | IEEE80211_WORK_ASSOC_BEACON_WAIT, | |
265 | IEEE80211_WORK_ASSOC, | |
266 | IEEE80211_WORK_REMAIN_ON_CHANNEL, | |
267 | IEEE80211_WORK_OFFCHANNEL_TX, | |
268 | }; | |
269 | ||
270 | /** | |
271 | * enum work_done_result - indicates what to do after work was done | |
272 | * | |
273 | * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. | |
274 | * @WORK_DONE_REQUEUE: This work item was reset to be reused, and | |
275 | * should be requeued. | |
276 | */ | |
277 | enum work_done_result { | |
278 | WORK_DONE_DESTROY, | |
279 | WORK_DONE_REQUEUE, | |
280 | }; | |
281 | ||
282 | struct ieee80211_work { | |
283 | struct list_head list; | |
284 | ||
285 | struct rcu_head rcu_head; | |
286 | ||
287 | struct ieee80211_sub_if_data *sdata; | |
288 | ||
289 | enum work_done_result (*done)(struct ieee80211_work *wk, | |
290 | struct sk_buff *skb); | |
291 | ||
292 | struct ieee80211_channel *chan; | |
293 | enum nl80211_channel_type chan_type; | |
294 | ||
295 | unsigned long timeout; | |
296 | enum ieee80211_work_type type; | |
297 | ||
298 | u8 filter_ta[ETH_ALEN]; | |
299 | ||
300 | bool started; | |
301 | ||
302 | union { | |
303 | struct { | |
304 | int tries; | |
305 | u16 algorithm, transaction; | |
306 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
307 | u8 ssid_len; | |
308 | u8 key[WLAN_KEY_LEN_WEP104]; | |
309 | u8 key_len, key_idx; | |
310 | bool privacy; | |
311 | } probe_auth; | |
312 | struct { | |
313 | struct cfg80211_bss *bss; | |
314 | const u8 *supp_rates; | |
315 | const u8 *ht_information_ie; | |
316 | enum ieee80211_smps_mode smps; | |
317 | int tries; | |
318 | u16 capability; | |
319 | u8 prev_bssid[ETH_ALEN]; | |
320 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
321 | u8 ssid_len; | |
322 | u8 supp_rates_len; | |
323 | bool wmm_used, use_11n, uapsd_used; | |
324 | } assoc; | |
325 | struct { | |
326 | u32 duration; | |
327 | } remain; | |
328 | struct { | |
329 | struct sk_buff *frame; | |
330 | u32 wait; | |
331 | } offchan_tx; | |
332 | }; | |
333 | ||
334 | int ie_len; | |
335 | /* must be last */ | |
336 | u8 ie[0]; | |
337 | }; | |
338 | ||
339 | /* flags used in struct ieee80211_if_managed.flags */ | |
340 | enum ieee80211_sta_flags { | |
341 | IEEE80211_STA_BEACON_POLL = BIT(0), | |
342 | IEEE80211_STA_CONNECTION_POLL = BIT(1), | |
343 | IEEE80211_STA_CONTROL_PORT = BIT(2), | |
344 | IEEE80211_STA_DISABLE_11N = BIT(4), | |
345 | IEEE80211_STA_CSA_RECEIVED = BIT(5), | |
346 | IEEE80211_STA_MFP_ENABLED = BIT(6), | |
347 | IEEE80211_STA_UAPSD_ENABLED = BIT(7), | |
348 | IEEE80211_STA_NULLFUNC_ACKED = BIT(8), | |
349 | IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), | |
350 | }; | |
351 | ||
352 | struct ieee80211_if_managed { | |
353 | struct timer_list timer; | |
354 | struct timer_list conn_mon_timer; | |
355 | struct timer_list bcn_mon_timer; | |
356 | struct timer_list chswitch_timer; | |
357 | struct work_struct monitor_work; | |
358 | struct work_struct chswitch_work; | |
359 | struct work_struct beacon_connection_loss_work; | |
360 | ||
361 | unsigned long beacon_timeout; | |
362 | unsigned long probe_timeout; | |
363 | int probe_send_count; | |
364 | bool nullfunc_failed; | |
365 | ||
366 | struct mutex mtx; | |
367 | struct cfg80211_bss *associated; | |
368 | ||
369 | u8 bssid[ETH_ALEN]; | |
370 | ||
371 | u16 aid; | |
372 | ||
373 | unsigned long timers_running; /* used for quiesce/restart */ | |
374 | bool powersave; /* powersave requested for this iface */ | |
375 | enum ieee80211_smps_mode req_smps, /* requested smps mode */ | |
376 | ap_smps, /* smps mode AP thinks we're in */ | |
377 | driver_smps_mode; /* smps mode request */ | |
378 | ||
379 | struct work_struct request_smps_work; | |
380 | ||
381 | unsigned int flags; | |
382 | ||
383 | bool beacon_crc_valid; | |
384 | u32 beacon_crc; | |
385 | ||
386 | enum { | |
387 | IEEE80211_MFP_DISABLED, | |
388 | IEEE80211_MFP_OPTIONAL, | |
389 | IEEE80211_MFP_REQUIRED | |
390 | } mfp; /* management frame protection */ | |
391 | ||
392 | int wmm_last_param_set; | |
393 | ||
394 | u8 use_4addr; | |
395 | ||
396 | /* Signal strength from the last Beacon frame in the current BSS. */ | |
397 | int last_beacon_signal; | |
398 | ||
399 | /* | |
400 | * Weighted average of the signal strength from Beacon frames in the | |
401 | * current BSS. This is in units of 1/16 of the signal unit to maintain | |
402 | * accuracy and to speed up calculations, i.e., the value need to be | |
403 | * divided by 16 to get the actual value. | |
404 | */ | |
405 | int ave_beacon_signal; | |
406 | ||
407 | /* | |
408 | * Number of Beacon frames used in ave_beacon_signal. This can be used | |
409 | * to avoid generating less reliable cqm events that would be based | |
410 | * only on couple of received frames. | |
411 | */ | |
412 | unsigned int count_beacon_signal; | |
413 | ||
414 | /* | |
415 | * Last Beacon frame signal strength average (ave_beacon_signal / 16) | |
416 | * that triggered a cqm event. 0 indicates that no event has been | |
417 | * generated for the current association. | |
418 | */ | |
419 | int last_cqm_event_signal; | |
420 | }; | |
421 | ||
422 | struct ieee80211_if_ibss { | |
423 | struct timer_list timer; | |
424 | ||
425 | struct mutex mtx; | |
426 | ||
427 | unsigned long last_scan_completed; | |
428 | ||
429 | u32 basic_rates; | |
430 | ||
431 | bool timer_running; | |
432 | ||
433 | bool fixed_bssid; | |
434 | bool fixed_channel; | |
435 | bool privacy; | |
436 | ||
437 | u8 bssid[ETH_ALEN]; | |
438 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
439 | u8 ssid_len, ie_len; | |
440 | u8 *ie; | |
441 | struct ieee80211_channel *channel; | |
442 | ||
443 | unsigned long ibss_join_req; | |
444 | /* probe response/beacon for IBSS */ | |
445 | struct sk_buff *presp, *skb; | |
446 | ||
447 | enum { | |
448 | IEEE80211_IBSS_MLME_SEARCH, | |
449 | IEEE80211_IBSS_MLME_JOINED, | |
450 | } state; | |
451 | }; | |
452 | ||
453 | struct ieee80211_if_mesh { | |
454 | struct timer_list housekeeping_timer; | |
455 | struct timer_list mesh_path_timer; | |
456 | struct timer_list mesh_path_root_timer; | |
457 | ||
458 | unsigned long timers_running; | |
459 | ||
460 | unsigned long wrkq_flags; | |
461 | ||
462 | u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; | |
463 | size_t mesh_id_len; | |
464 | /* Active Path Selection Protocol Identifier */ | |
465 | u8 mesh_pp_id; | |
466 | /* Active Path Selection Metric Identifier */ | |
467 | u8 mesh_pm_id; | |
468 | /* Congestion Control Mode Identifier */ | |
469 | u8 mesh_cc_id; | |
470 | /* Synchronization Protocol Identifier */ | |
471 | u8 mesh_sp_id; | |
472 | /* Authentication Protocol Identifier */ | |
473 | u8 mesh_auth_id; | |
474 | /* Local mesh Sequence Number */ | |
475 | u32 sn; | |
476 | /* Last used PREQ ID */ | |
477 | u32 preq_id; | |
478 | atomic_t mpaths; | |
479 | /* Timestamp of last SN update */ | |
480 | unsigned long last_sn_update; | |
481 | /* Timestamp of last SN sent */ | |
482 | unsigned long last_preq; | |
483 | struct mesh_rmc *rmc; | |
484 | spinlock_t mesh_preq_queue_lock; | |
485 | struct mesh_preq_queue preq_queue; | |
486 | int preq_queue_len; | |
487 | struct mesh_stats mshstats; | |
488 | struct mesh_config mshcfg; | |
489 | u32 mesh_seqnum; | |
490 | bool accepting_plinks; | |
491 | const u8 *ie; | |
492 | u8 ie_len; | |
493 | bool is_secure; | |
494 | }; | |
495 | ||
496 | #ifdef CONFIG_MAC80211_MESH | |
497 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
498 | do { (msh)->mshstats.name++; } while (0) | |
499 | #else | |
500 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
501 | do { } while (0) | |
502 | #endif | |
503 | ||
504 | /** | |
505 | * enum ieee80211_sub_if_data_flags - virtual interface flags | |
506 | * | |
507 | * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets | |
508 | * @IEEE80211_SDATA_PROMISC: interface is promisc | |
509 | * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode | |
510 | * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between | |
511 | * associated stations and deliver multicast frames both | |
512 | * back to wireless media and to the local net stack. | |
513 | */ | |
514 | enum ieee80211_sub_if_data_flags { | |
515 | IEEE80211_SDATA_ALLMULTI = BIT(0), | |
516 | IEEE80211_SDATA_PROMISC = BIT(1), | |
517 | IEEE80211_SDATA_OPERATING_GMODE = BIT(2), | |
518 | IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), | |
519 | }; | |
520 | ||
521 | /** | |
522 | * enum ieee80211_sdata_state_bits - virtual interface state bits | |
523 | * @SDATA_STATE_RUNNING: virtual interface is up & running; this | |
524 | * mirrors netif_running() but is separate for interface type | |
525 | * change handling while the interface is up | |
526 | * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel | |
527 | * mode, so queues are stopped | |
528 | */ | |
529 | enum ieee80211_sdata_state_bits { | |
530 | SDATA_STATE_RUNNING, | |
531 | SDATA_STATE_OFFCHANNEL, | |
532 | }; | |
533 | ||
534 | struct ieee80211_sub_if_data { | |
535 | struct list_head list; | |
536 | ||
537 | struct wireless_dev wdev; | |
538 | ||
539 | /* keys */ | |
540 | struct list_head key_list; | |
541 | ||
542 | struct net_device *dev; | |
543 | struct ieee80211_local *local; | |
544 | ||
545 | unsigned int flags; | |
546 | ||
547 | unsigned long state; | |
548 | ||
549 | int drop_unencrypted; | |
550 | ||
551 | char name[IFNAMSIZ]; | |
552 | ||
553 | /* | |
554 | * keep track of whether the HT opmode (stored in | |
555 | * vif.bss_info.ht_operation_mode) is valid. | |
556 | */ | |
557 | bool ht_opmode_valid; | |
558 | ||
559 | /* to detect idle changes */ | |
560 | bool old_idle; | |
561 | ||
562 | /* Fragment table for host-based reassembly */ | |
563 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; | |
564 | unsigned int fragment_next; | |
565 | ||
566 | struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; | |
567 | struct ieee80211_key *default_unicast_key, *default_multicast_key; | |
568 | struct ieee80211_key *default_mgmt_key; | |
569 | ||
570 | u16 sequence_number; | |
571 | __be16 control_port_protocol; | |
572 | bool control_port_no_encrypt; | |
573 | ||
574 | struct work_struct work; | |
575 | struct sk_buff_head skb_queue; | |
576 | ||
577 | bool arp_filter_state; | |
578 | ||
579 | /* | |
580 | * AP this belongs to: self in AP mode and | |
581 | * corresponding AP in VLAN mode, NULL for | |
582 | * all others (might be needed later in IBSS) | |
583 | */ | |
584 | struct ieee80211_if_ap *bss; | |
585 | ||
586 | /* bitmap of allowed (non-MCS) rate indexes for rate control */ | |
587 | u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; | |
588 | ||
589 | union { | |
590 | struct ieee80211_if_ap ap; | |
591 | struct ieee80211_if_wds wds; | |
592 | struct ieee80211_if_vlan vlan; | |
593 | struct ieee80211_if_managed mgd; | |
594 | struct ieee80211_if_ibss ibss; | |
595 | struct ieee80211_if_mesh mesh; | |
596 | u32 mntr_flags; | |
597 | } u; | |
598 | ||
599 | #ifdef CONFIG_MAC80211_DEBUGFS | |
600 | struct { | |
601 | struct dentry *dir; | |
602 | struct dentry *subdir_stations; | |
603 | struct dentry *default_unicast_key; | |
604 | struct dentry *default_multicast_key; | |
605 | struct dentry *default_mgmt_key; | |
606 | } debugfs; | |
607 | #endif | |
608 | /* must be last, dynamically sized area in this! */ | |
609 | struct ieee80211_vif vif; | |
610 | }; | |
611 | ||
612 | static inline | |
613 | struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) | |
614 | { | |
615 | return container_of(p, struct ieee80211_sub_if_data, vif); | |
616 | } | |
617 | ||
618 | enum sdata_queue_type { | |
619 | IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, | |
620 | IEEE80211_SDATA_QUEUE_AGG_START = 1, | |
621 | IEEE80211_SDATA_QUEUE_AGG_STOP = 2, | |
622 | }; | |
623 | ||
624 | enum { | |
625 | IEEE80211_RX_MSG = 1, | |
626 | IEEE80211_TX_STATUS_MSG = 2, | |
627 | }; | |
628 | ||
629 | enum queue_stop_reason { | |
630 | IEEE80211_QUEUE_STOP_REASON_DRIVER, | |
631 | IEEE80211_QUEUE_STOP_REASON_PS, | |
632 | IEEE80211_QUEUE_STOP_REASON_CSA, | |
633 | IEEE80211_QUEUE_STOP_REASON_AGGREGATION, | |
634 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, | |
635 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, | |
636 | }; | |
637 | ||
638 | #ifdef CONFIG_MAC80211_LEDS | |
639 | struct tpt_led_trigger { | |
640 | struct led_trigger trig; | |
641 | char name[32]; | |
642 | const struct ieee80211_tpt_blink *blink_table; | |
643 | unsigned int blink_table_len; | |
644 | struct timer_list timer; | |
645 | unsigned long prev_traffic; | |
646 | unsigned long tx_bytes, rx_bytes; | |
647 | unsigned int active, want; | |
648 | bool running; | |
649 | }; | |
650 | #endif | |
651 | ||
652 | /** | |
653 | * mac80211 scan flags - currently active scan mode | |
654 | * | |
655 | * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as | |
656 | * well be on the operating channel | |
657 | * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to | |
658 | * determine if we are on the operating channel or not | |
659 | * @SCAN_COMPLETED: Set for our scan work function when the driver reported | |
660 | * that the scan completed. | |
661 | * @SCAN_ABORTED: Set for our scan work function when the driver reported | |
662 | * a scan complete for an aborted scan. | |
663 | */ | |
664 | enum { | |
665 | SCAN_SW_SCANNING, | |
666 | SCAN_HW_SCANNING, | |
667 | SCAN_COMPLETED, | |
668 | SCAN_ABORTED, | |
669 | }; | |
670 | ||
671 | /** | |
672 | * enum mac80211_scan_state - scan state machine states | |
673 | * | |
674 | * @SCAN_DECISION: Main entry point to the scan state machine, this state | |
675 | * determines if we should keep on scanning or switch back to the | |
676 | * operating channel | |
677 | * @SCAN_SET_CHANNEL: Set the next channel to be scanned | |
678 | * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses | |
679 | * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP | |
680 | * about us leaving the channel and stop all associated STA interfaces | |
681 | * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the | |
682 | * AP about us being back and restart all associated STA interfaces | |
683 | */ | |
684 | enum mac80211_scan_state { | |
685 | SCAN_DECISION, | |
686 | SCAN_SET_CHANNEL, | |
687 | SCAN_SEND_PROBE, | |
688 | SCAN_LEAVE_OPER_CHANNEL, | |
689 | SCAN_ENTER_OPER_CHANNEL, | |
690 | }; | |
691 | ||
692 | struct ieee80211_local { | |
693 | /* embed the driver visible part. | |
694 | * don't cast (use the static inlines below), but we keep | |
695 | * it first anyway so they become a no-op */ | |
696 | struct ieee80211_hw hw; | |
697 | ||
698 | const struct ieee80211_ops *ops; | |
699 | ||
700 | /* | |
701 | * work stuff, potentially off-channel (in the future) | |
702 | */ | |
703 | struct list_head work_list; | |
704 | struct timer_list work_timer; | |
705 | struct work_struct work_work; | |
706 | struct sk_buff_head work_skb_queue; | |
707 | ||
708 | /* | |
709 | * private workqueue to mac80211. mac80211 makes this accessible | |
710 | * via ieee80211_queue_work() | |
711 | */ | |
712 | struct workqueue_struct *workqueue; | |
713 | ||
714 | unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; | |
715 | /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ | |
716 | spinlock_t queue_stop_reason_lock; | |
717 | ||
718 | int open_count; | |
719 | int monitors, cooked_mntrs; | |
720 | /* number of interfaces with corresponding FIF_ flags */ | |
721 | int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, | |
722 | fif_probe_req; | |
723 | int probe_req_reg; | |
724 | unsigned int filter_flags; /* FIF_* */ | |
725 | ||
726 | bool wiphy_ciphers_allocated; | |
727 | ||
728 | /* protects the aggregated multicast list and filter calls */ | |
729 | spinlock_t filter_lock; | |
730 | ||
731 | /* used for uploading changed mc list */ | |
732 | struct work_struct reconfig_filter; | |
733 | ||
734 | /* used to reconfigure hardware SM PS */ | |
735 | struct work_struct recalc_smps; | |
736 | ||
737 | /* aggregated multicast list */ | |
738 | struct netdev_hw_addr_list mc_list; | |
739 | ||
740 | bool tim_in_locked_section; /* see ieee80211_beacon_get() */ | |
741 | ||
742 | /* | |
743 | * suspended is true if we finished all the suspend _and_ we have | |
744 | * not yet come up from resume. This is to be used by mac80211 | |
745 | * to ensure driver sanity during suspend and mac80211's own | |
746 | * sanity. It can eventually be used for WoW as well. | |
747 | */ | |
748 | bool suspended; | |
749 | ||
750 | /* | |
751 | * Resuming is true while suspended, but when we're reprogramming the | |
752 | * hardware -- at that time it's allowed to use ieee80211_queue_work() | |
753 | * again even though some other parts of the stack are still suspended | |
754 | * and we still drop received frames to avoid waking the stack. | |
755 | */ | |
756 | bool resuming; | |
757 | ||
758 | /* | |
759 | * quiescing is true during the suspend process _only_ to | |
760 | * ease timer cancelling etc. | |
761 | */ | |
762 | bool quiescing; | |
763 | ||
764 | /* device is started */ | |
765 | bool started; | |
766 | ||
767 | int tx_headroom; /* required headroom for hardware/radiotap */ | |
768 | ||
769 | /* count for keys needing tailroom space allocation */ | |
770 | int crypto_tx_tailroom_needed_cnt; | |
771 | ||
772 | /* Tasklet and skb queue to process calls from IRQ mode. All frames | |
773 | * added to skb_queue will be processed, but frames in | |
774 | * skb_queue_unreliable may be dropped if the total length of these | |
775 | * queues increases over the limit. */ | |
776 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 | |
777 | struct tasklet_struct tasklet; | |
778 | struct sk_buff_head skb_queue; | |
779 | struct sk_buff_head skb_queue_unreliable; | |
780 | ||
781 | /* | |
782 | * Internal FIFO queue which is shared between multiple rx path | |
783 | * stages. Its main task is to provide a serialization mechanism, | |
784 | * so all rx handlers can enjoy having exclusive access to their | |
785 | * private data structures. | |
786 | */ | |
787 | struct sk_buff_head rx_skb_queue; | |
788 | bool running_rx_handler; /* protected by rx_skb_queue.lock */ | |
789 | ||
790 | /* Station data */ | |
791 | /* | |
792 | * The mutex only protects the list and counter, | |
793 | * reads are done in RCU. | |
794 | * Additionally, the lock protects the hash table, | |
795 | * the pending list and each BSS's TIM bitmap. | |
796 | */ | |
797 | struct mutex sta_mtx; | |
798 | spinlock_t sta_lock; | |
799 | unsigned long num_sta; | |
800 | struct list_head sta_list, sta_pending_list; | |
801 | struct sta_info *sta_hash[STA_HASH_SIZE]; | |
802 | struct timer_list sta_cleanup; | |
803 | struct work_struct sta_finish_work; | |
804 | int sta_generation; | |
805 | ||
806 | struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; | |
807 | struct tasklet_struct tx_pending_tasklet; | |
808 | ||
809 | atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; | |
810 | ||
811 | /* number of interfaces with corresponding IFF_ flags */ | |
812 | atomic_t iff_allmultis, iff_promiscs; | |
813 | ||
814 | struct rate_control_ref *rate_ctrl; | |
815 | ||
816 | struct crypto_cipher *wep_tx_tfm; | |
817 | struct crypto_cipher *wep_rx_tfm; | |
818 | u32 wep_iv; | |
819 | ||
820 | /* see iface.c */ | |
821 | struct list_head interfaces; | |
822 | struct mutex iflist_mtx; | |
823 | ||
824 | /* | |
825 | * Key mutex, protects sdata's key_list and sta_info's | |
826 | * key pointers (write access, they're RCU.) | |
827 | */ | |
828 | struct mutex key_mtx; | |
829 | ||
830 | /* mutex for scan and work locking */ | |
831 | struct mutex mtx; | |
832 | ||
833 | /* Scanning and BSS list */ | |
834 | unsigned long scanning; | |
835 | struct cfg80211_ssid scan_ssid; | |
836 | struct cfg80211_scan_request *int_scan_req; | |
837 | struct cfg80211_scan_request *scan_req, *hw_scan_req; | |
838 | struct ieee80211_channel *scan_channel; | |
839 | enum ieee80211_band hw_scan_band; | |
840 | int scan_channel_idx; | |
841 | int scan_ies_len; | |
842 | ||
843 | unsigned long leave_oper_channel_time; | |
844 | enum mac80211_scan_state next_scan_state; | |
845 | struct delayed_work scan_work; | |
846 | struct ieee80211_sub_if_data *scan_sdata; | |
847 | enum nl80211_channel_type _oper_channel_type; | |
848 | struct ieee80211_channel *oper_channel, *csa_channel; | |
849 | ||
850 | /* Temporary remain-on-channel for off-channel operations */ | |
851 | struct ieee80211_channel *tmp_channel; | |
852 | enum nl80211_channel_type tmp_channel_type; | |
853 | ||
854 | /* SNMP counters */ | |
855 | /* dot11CountersTable */ | |
856 | u32 dot11TransmittedFragmentCount; | |
857 | u32 dot11MulticastTransmittedFrameCount; | |
858 | u32 dot11FailedCount; | |
859 | u32 dot11RetryCount; | |
860 | u32 dot11MultipleRetryCount; | |
861 | u32 dot11FrameDuplicateCount; | |
862 | u32 dot11ReceivedFragmentCount; | |
863 | u32 dot11MulticastReceivedFrameCount; | |
864 | u32 dot11TransmittedFrameCount; | |
865 | ||
866 | #ifdef CONFIG_MAC80211_LEDS | |
867 | int tx_led_counter, rx_led_counter; | |
868 | struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; | |
869 | struct tpt_led_trigger *tpt_led_trigger; | |
870 | char tx_led_name[32], rx_led_name[32], | |
871 | assoc_led_name[32], radio_led_name[32]; | |
872 | #endif | |
873 | ||
874 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
875 | /* TX/RX handler statistics */ | |
876 | unsigned int tx_handlers_drop; | |
877 | unsigned int tx_handlers_queued; | |
878 | unsigned int tx_handlers_drop_unencrypted; | |
879 | unsigned int tx_handlers_drop_fragment; | |
880 | unsigned int tx_handlers_drop_wep; | |
881 | unsigned int tx_handlers_drop_not_assoc; | |
882 | unsigned int tx_handlers_drop_unauth_port; | |
883 | unsigned int rx_handlers_drop; | |
884 | unsigned int rx_handlers_queued; | |
885 | unsigned int rx_handlers_drop_nullfunc; | |
886 | unsigned int rx_handlers_drop_defrag; | |
887 | unsigned int rx_handlers_drop_short; | |
888 | unsigned int rx_handlers_drop_passive_scan; | |
889 | unsigned int tx_expand_skb_head; | |
890 | unsigned int tx_expand_skb_head_cloned; | |
891 | unsigned int rx_expand_skb_head; | |
892 | unsigned int rx_expand_skb_head2; | |
893 | unsigned int rx_handlers_fragments; | |
894 | unsigned int tx_status_drop; | |
895 | #define I802_DEBUG_INC(c) (c)++ | |
896 | #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
897 | #define I802_DEBUG_INC(c) do { } while (0) | |
898 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
899 | ||
900 | ||
901 | int total_ps_buffered; /* total number of all buffered unicast and | |
902 | * multicast packets for power saving stations | |
903 | */ | |
904 | int wifi_wme_noack_test; | |
905 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ | |
906 | ||
907 | /* | |
908 | * Bitmask of enabled u-apsd queues, | |
909 | * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association | |
910 | * to take effect. | |
911 | */ | |
912 | unsigned int uapsd_queues; | |
913 | ||
914 | /* | |
915 | * Maximum number of buffered frames AP can deliver during a | |
916 | * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. | |
917 | * Needs a new association to take effect. | |
918 | */ | |
919 | unsigned int uapsd_max_sp_len; | |
920 | ||
921 | bool pspolling; | |
922 | bool offchannel_ps_enabled; | |
923 | /* | |
924 | * PS can only be enabled when we have exactly one managed | |
925 | * interface (and monitors) in PS, this then points there. | |
926 | */ | |
927 | struct ieee80211_sub_if_data *ps_sdata; | |
928 | struct work_struct dynamic_ps_enable_work; | |
929 | struct work_struct dynamic_ps_disable_work; | |
930 | struct timer_list dynamic_ps_timer; | |
931 | struct notifier_block network_latency_notifier; | |
932 | struct notifier_block ifa_notifier; | |
933 | ||
934 | /* | |
935 | * The dynamic ps timeout configured from user space via WEXT - | |
936 | * this will override whatever chosen by mac80211 internally. | |
937 | */ | |
938 | int dynamic_ps_forced_timeout; | |
939 | int dynamic_ps_user_timeout; | |
940 | bool disable_dynamic_ps; | |
941 | ||
942 | int user_power_level; /* in dBm */ | |
943 | int power_constr_level; /* in dBm */ | |
944 | ||
945 | enum ieee80211_smps_mode smps_mode; | |
946 | ||
947 | struct work_struct restart_work; | |
948 | ||
949 | #ifdef CONFIG_MAC80211_DEBUGFS | |
950 | struct local_debugfsdentries { | |
951 | struct dentry *rcdir; | |
952 | struct dentry *keys; | |
953 | } debugfs; | |
954 | #endif | |
955 | ||
956 | struct ieee80211_channel *hw_roc_channel; | |
957 | struct net_device *hw_roc_dev; | |
958 | struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; | |
959 | struct work_struct hw_roc_start, hw_roc_done; | |
960 | enum nl80211_channel_type hw_roc_channel_type; | |
961 | unsigned int hw_roc_duration; | |
962 | u32 hw_roc_cookie; | |
963 | bool hw_roc_for_tx; | |
964 | unsigned long hw_offchan_tx_cookie; | |
965 | ||
966 | /* dummy netdev for use w/ NAPI */ | |
967 | struct net_device napi_dev; | |
968 | ||
969 | struct napi_struct napi; | |
970 | }; | |
971 | ||
972 | static inline struct ieee80211_sub_if_data * | |
973 | IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) | |
974 | { | |
975 | return netdev_priv(dev); | |
976 | } | |
977 | ||
978 | /* this struct represents 802.11n's RA/TID combination */ | |
979 | struct ieee80211_ra_tid { | |
980 | u8 ra[ETH_ALEN]; | |
981 | u16 tid; | |
982 | }; | |
983 | ||
984 | /* Parsed Information Elements */ | |
985 | struct ieee802_11_elems { | |
986 | u8 *ie_start; | |
987 | size_t total_len; | |
988 | ||
989 | /* pointers to IEs */ | |
990 | u8 *ssid; | |
991 | u8 *supp_rates; | |
992 | u8 *fh_params; | |
993 | u8 *ds_params; | |
994 | u8 *cf_params; | |
995 | struct ieee80211_tim_ie *tim; | |
996 | u8 *ibss_params; | |
997 | u8 *challenge; | |
998 | u8 *wpa; | |
999 | u8 *rsn; | |
1000 | u8 *erp_info; | |
1001 | u8 *ext_supp_rates; | |
1002 | u8 *wmm_info; | |
1003 | u8 *wmm_param; | |
1004 | struct ieee80211_ht_cap *ht_cap_elem; | |
1005 | struct ieee80211_ht_info *ht_info_elem; | |
1006 | struct ieee80211_meshconf_ie *mesh_config; | |
1007 | u8 *mesh_id; | |
1008 | u8 *peer_link; | |
1009 | u8 *preq; | |
1010 | u8 *prep; | |
1011 | u8 *perr; | |
1012 | struct ieee80211_rann_ie *rann; | |
1013 | u8 *ch_switch_elem; | |
1014 | u8 *country_elem; | |
1015 | u8 *pwr_constr_elem; | |
1016 | u8 *quiet_elem; /* first quite element */ | |
1017 | u8 *timeout_int; | |
1018 | ||
1019 | /* length of them, respectively */ | |
1020 | u8 ssid_len; | |
1021 | u8 supp_rates_len; | |
1022 | u8 fh_params_len; | |
1023 | u8 ds_params_len; | |
1024 | u8 cf_params_len; | |
1025 | u8 tim_len; | |
1026 | u8 ibss_params_len; | |
1027 | u8 challenge_len; | |
1028 | u8 wpa_len; | |
1029 | u8 rsn_len; | |
1030 | u8 erp_info_len; | |
1031 | u8 ext_supp_rates_len; | |
1032 | u8 wmm_info_len; | |
1033 | u8 wmm_param_len; | |
1034 | u8 mesh_id_len; | |
1035 | u8 peer_link_len; | |
1036 | u8 preq_len; | |
1037 | u8 prep_len; | |
1038 | u8 perr_len; | |
1039 | u8 ch_switch_elem_len; | |
1040 | u8 country_elem_len; | |
1041 | u8 pwr_constr_elem_len; | |
1042 | u8 quiet_elem_len; | |
1043 | u8 num_of_quiet_elem; /* can be more the one */ | |
1044 | u8 timeout_int_len; | |
1045 | }; | |
1046 | ||
1047 | static inline struct ieee80211_local *hw_to_local( | |
1048 | struct ieee80211_hw *hw) | |
1049 | { | |
1050 | return container_of(hw, struct ieee80211_local, hw); | |
1051 | } | |
1052 | ||
1053 | static inline struct ieee80211_hw *local_to_hw( | |
1054 | struct ieee80211_local *local) | |
1055 | { | |
1056 | return &local->hw; | |
1057 | } | |
1058 | ||
1059 | ||
1060 | static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) | |
1061 | { | |
1062 | return compare_ether_addr(raddr, addr) == 0 || | |
1063 | is_broadcast_ether_addr(raddr); | |
1064 | } | |
1065 | ||
1066 | ||
1067 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); | |
1068 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); | |
1069 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, | |
1070 | u32 changed); | |
1071 | void ieee80211_configure_filter(struct ieee80211_local *local); | |
1072 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); | |
1073 | ||
1074 | /* STA code */ | |
1075 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
1076 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
1077 | struct cfg80211_auth_request *req); | |
1078 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, | |
1079 | struct cfg80211_assoc_request *req); | |
1080 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, | |
1081 | struct cfg80211_deauth_request *req, | |
1082 | void *cookie); | |
1083 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, | |
1084 | struct cfg80211_disassoc_request *req, | |
1085 | void *cookie); | |
1086 | void ieee80211_send_pspoll(struct ieee80211_local *local, | |
1087 | struct ieee80211_sub_if_data *sdata); | |
1088 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); | |
1089 | int ieee80211_max_network_latency(struct notifier_block *nb, | |
1090 | unsigned long data, void *dummy); | |
1091 | int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); | |
1092 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
1093 | struct ieee80211_channel_sw_ie *sw_elem, | |
1094 | struct ieee80211_bss *bss, | |
1095 | u64 timestamp); | |
1096 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); | |
1097 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); | |
1098 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); | |
1099 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1100 | struct sk_buff *skb); | |
1101 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); | |
1102 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); | |
1103 | ||
1104 | /* IBSS code */ | |
1105 | void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); | |
1106 | void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
1107 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, | |
1108 | u8 *bssid, u8 *addr, u32 supp_rates, | |
1109 | gfp_t gfp); | |
1110 | int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, | |
1111 | struct cfg80211_ibss_params *params); | |
1112 | int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); | |
1113 | void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); | |
1114 | void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); | |
1115 | void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); | |
1116 | void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1117 | struct sk_buff *skb); | |
1118 | ||
1119 | /* mesh code */ | |
1120 | void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); | |
1121 | void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1122 | struct sk_buff *skb); | |
1123 | ||
1124 | /* scan/BSS handling */ | |
1125 | void ieee80211_scan_work(struct work_struct *work); | |
1126 | int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, | |
1127 | const u8 *ssid, u8 ssid_len, | |
1128 | struct ieee80211_channel *chan); | |
1129 | int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, | |
1130 | struct cfg80211_scan_request *req); | |
1131 | void ieee80211_scan_cancel(struct ieee80211_local *local); | |
1132 | ieee80211_rx_result | |
1133 | ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1134 | ||
1135 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); | |
1136 | struct ieee80211_bss * | |
1137 | ieee80211_bss_info_update(struct ieee80211_local *local, | |
1138 | struct ieee80211_rx_status *rx_status, | |
1139 | struct ieee80211_mgmt *mgmt, | |
1140 | size_t len, | |
1141 | struct ieee802_11_elems *elems, | |
1142 | struct ieee80211_channel *channel, | |
1143 | bool beacon); | |
1144 | struct ieee80211_bss * | |
1145 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, | |
1146 | u8 *ssid, u8 ssid_len); | |
1147 | void ieee80211_rx_bss_put(struct ieee80211_local *local, | |
1148 | struct ieee80211_bss *bss); | |
1149 | ||
1150 | /* off-channel helpers */ | |
1151 | bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); | |
1152 | void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, | |
1153 | bool tell_ap); | |
1154 | void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, | |
1155 | bool offchannel_ps_enable); | |
1156 | void ieee80211_offchannel_return(struct ieee80211_local *local, | |
1157 | bool enable_beaconing, | |
1158 | bool offchannel_ps_disable); | |
1159 | void ieee80211_hw_roc_setup(struct ieee80211_local *local); | |
1160 | ||
1161 | /* interface handling */ | |
1162 | int ieee80211_iface_init(void); | |
1163 | void ieee80211_iface_exit(void); | |
1164 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, | |
1165 | struct net_device **new_dev, enum nl80211_iftype type, | |
1166 | struct vif_params *params); | |
1167 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, | |
1168 | enum nl80211_iftype type); | |
1169 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); | |
1170 | void ieee80211_remove_interfaces(struct ieee80211_local *local); | |
1171 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local); | |
1172 | void ieee80211_recalc_idle(struct ieee80211_local *local); | |
1173 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, | |
1174 | const int offset); | |
1175 | ||
1176 | static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) | |
1177 | { | |
1178 | return test_bit(SDATA_STATE_RUNNING, &sdata->state); | |
1179 | } | |
1180 | ||
1181 | /* tx handling */ | |
1182 | void ieee80211_clear_tx_pending(struct ieee80211_local *local); | |
1183 | void ieee80211_tx_pending(unsigned long data); | |
1184 | netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, | |
1185 | struct net_device *dev); | |
1186 | netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, | |
1187 | struct net_device *dev); | |
1188 | ||
1189 | /* | |
1190 | * radiotap header for status frames | |
1191 | */ | |
1192 | struct ieee80211_tx_status_rtap_hdr { | |
1193 | struct ieee80211_radiotap_header hdr; | |
1194 | u8 rate; | |
1195 | u8 padding_for_rate; | |
1196 | __le16 tx_flags; | |
1197 | u8 data_retries; | |
1198 | } __packed; | |
1199 | ||
1200 | ||
1201 | /* HT */ | |
1202 | void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, | |
1203 | struct ieee80211_ht_cap *ht_cap_ie, | |
1204 | struct ieee80211_sta_ht_cap *ht_cap); | |
1205 | void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); | |
1206 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, | |
1207 | const u8 *da, u16 tid, | |
1208 | u16 initiator, u16 reason_code); | |
1209 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, | |
1210 | enum ieee80211_smps_mode smps, const u8 *da, | |
1211 | const u8 *bssid); | |
1212 | void ieee80211_request_smps_work(struct work_struct *work); | |
1213 | ||
1214 | void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, | |
1215 | u16 initiator, u16 reason, bool stop); | |
1216 | void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, | |
1217 | u16 initiator, u16 reason, bool stop); | |
1218 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); | |
1219 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, | |
1220 | struct sta_info *sta, | |
1221 | struct ieee80211_mgmt *mgmt, size_t len); | |
1222 | void ieee80211_process_addba_resp(struct ieee80211_local *local, | |
1223 | struct sta_info *sta, | |
1224 | struct ieee80211_mgmt *mgmt, | |
1225 | size_t len); | |
1226 | void ieee80211_process_addba_request(struct ieee80211_local *local, | |
1227 | struct sta_info *sta, | |
1228 | struct ieee80211_mgmt *mgmt, | |
1229 | size_t len); | |
1230 | ||
1231 | int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1232 | enum ieee80211_back_parties initiator, | |
1233 | bool tx); | |
1234 | int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1235 | enum ieee80211_back_parties initiator, | |
1236 | bool tx); | |
1237 | void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); | |
1238 | void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); | |
1239 | void ieee80211_ba_session_work(struct work_struct *work); | |
1240 | void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); | |
1241 | void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); | |
1242 | ||
1243 | /* Spectrum management */ | |
1244 | void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, | |
1245 | struct ieee80211_mgmt *mgmt, | |
1246 | size_t len); | |
1247 | ||
1248 | /* Suspend/resume and hw reconfiguration */ | |
1249 | int ieee80211_reconfig(struct ieee80211_local *local); | |
1250 | void ieee80211_stop_device(struct ieee80211_local *local); | |
1251 | ||
1252 | #ifdef CONFIG_PM | |
1253 | int __ieee80211_suspend(struct ieee80211_hw *hw); | |
1254 | ||
1255 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1256 | { | |
1257 | struct ieee80211_local *local = hw_to_local(hw); | |
1258 | ||
1259 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), | |
1260 | "%s: resume with hardware scan still in progress\n", | |
1261 | wiphy_name(hw->wiphy)); | |
1262 | ||
1263 | return ieee80211_reconfig(hw_to_local(hw)); | |
1264 | } | |
1265 | #else | |
1266 | static inline int __ieee80211_suspend(struct ieee80211_hw *hw) | |
1267 | { | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1272 | { | |
1273 | return 0; | |
1274 | } | |
1275 | #endif | |
1276 | ||
1277 | /* utility functions/constants */ | |
1278 | extern void *mac80211_wiphy_privid; /* for wiphy privid */ | |
1279 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, | |
1280 | enum nl80211_iftype type); | |
1281 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
1282 | int rate, int erp, int short_preamble); | |
1283 | void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, | |
1284 | struct ieee80211_hdr *hdr, const u8 *tsc, | |
1285 | gfp_t gfp); | |
1286 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); | |
1287 | void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1288 | void ieee802_11_parse_elems(u8 *start, size_t len, | |
1289 | struct ieee802_11_elems *elems); | |
1290 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
1291 | struct ieee802_11_elems *elems, | |
1292 | u64 filter, u32 crc); | |
1293 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, | |
1294 | enum ieee80211_band band); | |
1295 | ||
1296 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work); | |
1297 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work); | |
1298 | void ieee80211_dynamic_ps_timer(unsigned long data); | |
1299 | void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
1300 | struct ieee80211_sub_if_data *sdata, | |
1301 | int powersave); | |
1302 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, | |
1303 | struct ieee80211_hdr *hdr); | |
1304 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
1305 | struct ieee80211_hdr *hdr, bool ack); | |
1306 | void ieee80211_beacon_connection_loss_work(struct work_struct *work); | |
1307 | ||
1308 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, | |
1309 | enum queue_stop_reason reason); | |
1310 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, | |
1311 | enum queue_stop_reason reason); | |
1312 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1313 | enum queue_stop_reason reason); | |
1314 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1315 | enum queue_stop_reason reason); | |
1316 | void ieee80211_add_pending_skb(struct ieee80211_local *local, | |
1317 | struct sk_buff *skb); | |
1318 | int ieee80211_add_pending_skbs(struct ieee80211_local *local, | |
1319 | struct sk_buff_head *skbs); | |
1320 | int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, | |
1321 | struct sk_buff_head *skbs, | |
1322 | void (*fn)(void *data), void *data); | |
1323 | ||
1324 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
1325 | u16 transaction, u16 auth_alg, | |
1326 | u8 *extra, size_t extra_len, const u8 *bssid, | |
1327 | const u8 *key, u8 key_len, u8 key_idx); | |
1328 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, | |
1329 | const u8 *ie, size_t ie_len, | |
1330 | enum ieee80211_band band, u32 rate_mask, | |
1331 | u8 channel); | |
1332 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, | |
1333 | u8 *dst, | |
1334 | const u8 *ssid, size_t ssid_len, | |
1335 | const u8 *ie, size_t ie_len); | |
1336 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1337 | const u8 *ssid, size_t ssid_len, | |
1338 | const u8 *ie, size_t ie_len); | |
1339 | ||
1340 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, | |
1341 | const size_t supp_rates_len, | |
1342 | const u8 *supp_rates); | |
1343 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1344 | struct ieee802_11_elems *elems, | |
1345 | enum ieee80211_band band); | |
1346 | int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, | |
1347 | enum ieee80211_smps_mode smps_mode); | |
1348 | void ieee80211_recalc_smps(struct ieee80211_local *local); | |
1349 | ||
1350 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1351 | const u8 *ids, int n_ids, size_t offset); | |
1352 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); | |
1353 | ||
1354 | /* internal work items */ | |
1355 | void ieee80211_work_init(struct ieee80211_local *local); | |
1356 | void ieee80211_add_work(struct ieee80211_work *wk); | |
1357 | void free_work(struct ieee80211_work *wk); | |
1358 | void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); | |
1359 | ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, | |
1360 | struct sk_buff *skb); | |
1361 | int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, | |
1362 | struct ieee80211_channel *chan, | |
1363 | enum nl80211_channel_type channel_type, | |
1364 | unsigned int duration, u64 *cookie); | |
1365 | int ieee80211_wk_cancel_remain_on_channel( | |
1366 | struct ieee80211_sub_if_data *sdata, u64 cookie); | |
1367 | ||
1368 | /* channel management */ | |
1369 | enum ieee80211_chan_mode { | |
1370 | CHAN_MODE_UNDEFINED, | |
1371 | CHAN_MODE_HOPPING, | |
1372 | CHAN_MODE_FIXED, | |
1373 | }; | |
1374 | ||
1375 | enum ieee80211_chan_mode | |
1376 | ieee80211_get_channel_mode(struct ieee80211_local *local, | |
1377 | struct ieee80211_sub_if_data *ignore); | |
1378 | bool ieee80211_set_channel_type(struct ieee80211_local *local, | |
1379 | struct ieee80211_sub_if_data *sdata, | |
1380 | enum nl80211_channel_type chantype); | |
1381 | ||
1382 | #ifdef CONFIG_MAC80211_NOINLINE | |
1383 | #define debug_noinline noinline | |
1384 | #else | |
1385 | #define debug_noinline | |
1386 | #endif | |
1387 | ||
1388 | #endif /* IEEE80211_I_H */ |