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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 association, 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 __rcu *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 __rcu *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 __rcu *presp; | |
446 | struct sk_buff *skb; | |
447 | ||
448 | enum { | |
449 | IEEE80211_IBSS_MLME_SEARCH, | |
450 | IEEE80211_IBSS_MLME_JOINED, | |
451 | } state; | |
452 | }; | |
453 | ||
454 | struct ieee80211_if_mesh { | |
455 | struct timer_list housekeeping_timer; | |
456 | struct timer_list mesh_path_timer; | |
457 | struct timer_list mesh_path_root_timer; | |
458 | ||
459 | unsigned long timers_running; | |
460 | ||
461 | unsigned long wrkq_flags; | |
462 | ||
463 | u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; | |
464 | size_t mesh_id_len; | |
465 | /* Active Path Selection Protocol Identifier */ | |
466 | u8 mesh_pp_id; | |
467 | /* Active Path Selection Metric Identifier */ | |
468 | u8 mesh_pm_id; | |
469 | /* Congestion Control Mode Identifier */ | |
470 | u8 mesh_cc_id; | |
471 | /* Synchronization Protocol Identifier */ | |
472 | u8 mesh_sp_id; | |
473 | /* Authentication Protocol Identifier */ | |
474 | u8 mesh_auth_id; | |
475 | /* Local mesh Sequence Number */ | |
476 | u32 sn; | |
477 | /* Last used PREQ ID */ | |
478 | u32 preq_id; | |
479 | atomic_t mpaths; | |
480 | /* Timestamp of last SN update */ | |
481 | unsigned long last_sn_update; | |
482 | /* Timestamp of last SN sent */ | |
483 | unsigned long last_preq; | |
484 | struct mesh_rmc *rmc; | |
485 | spinlock_t mesh_preq_queue_lock; | |
486 | struct mesh_preq_queue preq_queue; | |
487 | int preq_queue_len; | |
488 | struct mesh_stats mshstats; | |
489 | struct mesh_config mshcfg; | |
490 | u32 mesh_seqnum; | |
491 | bool accepting_plinks; | |
492 | const u8 *ie; | |
493 | u8 ie_len; | |
494 | enum { | |
495 | IEEE80211_MESH_SEC_NONE = 0x0, | |
496 | IEEE80211_MESH_SEC_AUTHED = 0x1, | |
497 | IEEE80211_MESH_SEC_SECURED = 0x2, | |
498 | } security; | |
499 | }; | |
500 | ||
501 | #ifdef CONFIG_MAC80211_MESH | |
502 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
503 | do { (msh)->mshstats.name++; } while (0) | |
504 | #else | |
505 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
506 | do { } while (0) | |
507 | #endif | |
508 | ||
509 | /** | |
510 | * enum ieee80211_sub_if_data_flags - virtual interface flags | |
511 | * | |
512 | * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets | |
513 | * @IEEE80211_SDATA_PROMISC: interface is promisc | |
514 | * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode | |
515 | * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between | |
516 | * associated stations and deliver multicast frames both | |
517 | * back to wireless media and to the local net stack. | |
518 | */ | |
519 | enum ieee80211_sub_if_data_flags { | |
520 | IEEE80211_SDATA_ALLMULTI = BIT(0), | |
521 | IEEE80211_SDATA_PROMISC = BIT(1), | |
522 | IEEE80211_SDATA_OPERATING_GMODE = BIT(2), | |
523 | IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), | |
524 | }; | |
525 | ||
526 | /** | |
527 | * enum ieee80211_sdata_state_bits - virtual interface state bits | |
528 | * @SDATA_STATE_RUNNING: virtual interface is up & running; this | |
529 | * mirrors netif_running() but is separate for interface type | |
530 | * change handling while the interface is up | |
531 | * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel | |
532 | * mode, so queues are stopped | |
533 | */ | |
534 | enum ieee80211_sdata_state_bits { | |
535 | SDATA_STATE_RUNNING, | |
536 | SDATA_STATE_OFFCHANNEL, | |
537 | }; | |
538 | ||
539 | struct ieee80211_sub_if_data { | |
540 | struct list_head list; | |
541 | ||
542 | struct wireless_dev wdev; | |
543 | ||
544 | /* keys */ | |
545 | struct list_head key_list; | |
546 | ||
547 | /* count for keys needing tailroom space allocation */ | |
548 | int crypto_tx_tailroom_needed_cnt; | |
549 | ||
550 | struct net_device *dev; | |
551 | struct ieee80211_local *local; | |
552 | ||
553 | unsigned int flags; | |
554 | ||
555 | unsigned long state; | |
556 | ||
557 | int drop_unencrypted; | |
558 | ||
559 | char name[IFNAMSIZ]; | |
560 | ||
561 | /* | |
562 | * keep track of whether the HT opmode (stored in | |
563 | * vif.bss_info.ht_operation_mode) is valid. | |
564 | */ | |
565 | bool ht_opmode_valid; | |
566 | ||
567 | /* to detect idle changes */ | |
568 | bool old_idle; | |
569 | ||
570 | /* Fragment table for host-based reassembly */ | |
571 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; | |
572 | unsigned int fragment_next; | |
573 | ||
574 | struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; | |
575 | struct ieee80211_key __rcu *default_unicast_key; | |
576 | struct ieee80211_key __rcu *default_multicast_key; | |
577 | struct ieee80211_key __rcu *default_mgmt_key; | |
578 | ||
579 | u16 sequence_number; | |
580 | __be16 control_port_protocol; | |
581 | bool control_port_no_encrypt; | |
582 | ||
583 | struct work_struct work; | |
584 | struct sk_buff_head skb_queue; | |
585 | ||
586 | bool arp_filter_state; | |
587 | ||
588 | /* | |
589 | * AP this belongs to: self in AP mode and | |
590 | * corresponding AP in VLAN mode, NULL for | |
591 | * all others (might be needed later in IBSS) | |
592 | */ | |
593 | struct ieee80211_if_ap *bss; | |
594 | ||
595 | /* bitmap of allowed (non-MCS) rate indexes for rate control */ | |
596 | u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; | |
597 | ||
598 | union { | |
599 | struct ieee80211_if_ap ap; | |
600 | struct ieee80211_if_wds wds; | |
601 | struct ieee80211_if_vlan vlan; | |
602 | struct ieee80211_if_managed mgd; | |
603 | struct ieee80211_if_ibss ibss; | |
604 | struct ieee80211_if_mesh mesh; | |
605 | u32 mntr_flags; | |
606 | } u; | |
607 | ||
608 | #ifdef CONFIG_MAC80211_DEBUGFS | |
609 | struct { | |
610 | struct dentry *dir; | |
611 | struct dentry *subdir_stations; | |
612 | struct dentry *default_unicast_key; | |
613 | struct dentry *default_multicast_key; | |
614 | struct dentry *default_mgmt_key; | |
615 | } debugfs; | |
616 | #endif | |
617 | /* must be last, dynamically sized area in this! */ | |
618 | struct ieee80211_vif vif; | |
619 | }; | |
620 | ||
621 | static inline | |
622 | struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) | |
623 | { | |
624 | return container_of(p, struct ieee80211_sub_if_data, vif); | |
625 | } | |
626 | ||
627 | enum sdata_queue_type { | |
628 | IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, | |
629 | IEEE80211_SDATA_QUEUE_AGG_START = 1, | |
630 | IEEE80211_SDATA_QUEUE_AGG_STOP = 2, | |
631 | }; | |
632 | ||
633 | enum { | |
634 | IEEE80211_RX_MSG = 1, | |
635 | IEEE80211_TX_STATUS_MSG = 2, | |
636 | }; | |
637 | ||
638 | enum queue_stop_reason { | |
639 | IEEE80211_QUEUE_STOP_REASON_DRIVER, | |
640 | IEEE80211_QUEUE_STOP_REASON_PS, | |
641 | IEEE80211_QUEUE_STOP_REASON_CSA, | |
642 | IEEE80211_QUEUE_STOP_REASON_AGGREGATION, | |
643 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, | |
644 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, | |
645 | }; | |
646 | ||
647 | #ifdef CONFIG_MAC80211_LEDS | |
648 | struct tpt_led_trigger { | |
649 | struct led_trigger trig; | |
650 | char name[32]; | |
651 | const struct ieee80211_tpt_blink *blink_table; | |
652 | unsigned int blink_table_len; | |
653 | struct timer_list timer; | |
654 | unsigned long prev_traffic; | |
655 | unsigned long tx_bytes, rx_bytes; | |
656 | unsigned int active, want; | |
657 | bool running; | |
658 | }; | |
659 | #endif | |
660 | ||
661 | /** | |
662 | * mac80211 scan flags - currently active scan mode | |
663 | * | |
664 | * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as | |
665 | * well be on the operating channel | |
666 | * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to | |
667 | * determine if we are on the operating channel or not | |
668 | * @SCAN_COMPLETED: Set for our scan work function when the driver reported | |
669 | * that the scan completed. | |
670 | * @SCAN_ABORTED: Set for our scan work function when the driver reported | |
671 | * a scan complete for an aborted scan. | |
672 | */ | |
673 | enum { | |
674 | SCAN_SW_SCANNING, | |
675 | SCAN_HW_SCANNING, | |
676 | SCAN_COMPLETED, | |
677 | SCAN_ABORTED, | |
678 | }; | |
679 | ||
680 | /** | |
681 | * enum mac80211_scan_state - scan state machine states | |
682 | * | |
683 | * @SCAN_DECISION: Main entry point to the scan state machine, this state | |
684 | * determines if we should keep on scanning or switch back to the | |
685 | * operating channel | |
686 | * @SCAN_SET_CHANNEL: Set the next channel to be scanned | |
687 | * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses | |
688 | * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP | |
689 | * about us leaving the channel and stop all associated STA interfaces | |
690 | * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the | |
691 | * AP about us being back and restart all associated STA interfaces | |
692 | */ | |
693 | enum mac80211_scan_state { | |
694 | SCAN_DECISION, | |
695 | SCAN_SET_CHANNEL, | |
696 | SCAN_SEND_PROBE, | |
697 | SCAN_LEAVE_OPER_CHANNEL, | |
698 | SCAN_ENTER_OPER_CHANNEL, | |
699 | }; | |
700 | ||
701 | struct ieee80211_local { | |
702 | /* embed the driver visible part. | |
703 | * don't cast (use the static inlines below), but we keep | |
704 | * it first anyway so they become a no-op */ | |
705 | struct ieee80211_hw hw; | |
706 | ||
707 | const struct ieee80211_ops *ops; | |
708 | ||
709 | /* | |
710 | * work stuff, potentially off-channel (in the future) | |
711 | */ | |
712 | struct list_head work_list; | |
713 | struct timer_list work_timer; | |
714 | struct work_struct work_work; | |
715 | struct sk_buff_head work_skb_queue; | |
716 | ||
717 | /* | |
718 | * private workqueue to mac80211. mac80211 makes this accessible | |
719 | * via ieee80211_queue_work() | |
720 | */ | |
721 | struct workqueue_struct *workqueue; | |
722 | ||
723 | unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; | |
724 | /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ | |
725 | spinlock_t queue_stop_reason_lock; | |
726 | ||
727 | int open_count; | |
728 | int monitors, cooked_mntrs; | |
729 | /* number of interfaces with corresponding FIF_ flags */ | |
730 | int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, | |
731 | fif_probe_req; | |
732 | int probe_req_reg; | |
733 | unsigned int filter_flags; /* FIF_* */ | |
734 | ||
735 | bool wiphy_ciphers_allocated; | |
736 | ||
737 | /* protects the aggregated multicast list and filter calls */ | |
738 | spinlock_t filter_lock; | |
739 | ||
740 | /* used for uploading changed mc list */ | |
741 | struct work_struct reconfig_filter; | |
742 | ||
743 | /* used to reconfigure hardware SM PS */ | |
744 | struct work_struct recalc_smps; | |
745 | ||
746 | /* aggregated multicast list */ | |
747 | struct netdev_hw_addr_list mc_list; | |
748 | ||
749 | bool tim_in_locked_section; /* see ieee80211_beacon_get() */ | |
750 | ||
751 | /* | |
752 | * suspended is true if we finished all the suspend _and_ we have | |
753 | * not yet come up from resume. This is to be used by mac80211 | |
754 | * to ensure driver sanity during suspend and mac80211's own | |
755 | * sanity. It can eventually be used for WoW as well. | |
756 | */ | |
757 | bool suspended; | |
758 | ||
759 | /* | |
760 | * Resuming is true while suspended, but when we're reprogramming the | |
761 | * hardware -- at that time it's allowed to use ieee80211_queue_work() | |
762 | * again even though some other parts of the stack are still suspended | |
763 | * and we still drop received frames to avoid waking the stack. | |
764 | */ | |
765 | bool resuming; | |
766 | ||
767 | /* | |
768 | * quiescing is true during the suspend process _only_ to | |
769 | * ease timer cancelling etc. | |
770 | */ | |
771 | bool quiescing; | |
772 | ||
773 | /* device is started */ | |
774 | bool started; | |
775 | ||
776 | /* wowlan is enabled -- don't reconfig on resume */ | |
777 | bool wowlan; | |
778 | ||
779 | int tx_headroom; /* required headroom for hardware/radiotap */ | |
780 | ||
781 | /* Tasklet and skb queue to process calls from IRQ mode. All frames | |
782 | * added to skb_queue will be processed, but frames in | |
783 | * skb_queue_unreliable may be dropped if the total length of these | |
784 | * queues increases over the limit. */ | |
785 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 | |
786 | struct tasklet_struct tasklet; | |
787 | struct sk_buff_head skb_queue; | |
788 | struct sk_buff_head skb_queue_unreliable; | |
789 | ||
790 | /* | |
791 | * Internal FIFO queue which is shared between multiple rx path | |
792 | * stages. Its main task is to provide a serialization mechanism, | |
793 | * so all rx handlers can enjoy having exclusive access to their | |
794 | * private data structures. | |
795 | */ | |
796 | struct sk_buff_head rx_skb_queue; | |
797 | bool running_rx_handler; /* protected by rx_skb_queue.lock */ | |
798 | ||
799 | /* Station data */ | |
800 | /* | |
801 | * The mutex only protects the list and counter, | |
802 | * reads are done in RCU. | |
803 | * Additionally, the lock protects the hash table, | |
804 | * the pending list and each BSS's TIM bitmap. | |
805 | */ | |
806 | struct mutex sta_mtx; | |
807 | spinlock_t sta_lock; | |
808 | unsigned long num_sta; | |
809 | struct list_head sta_list, sta_pending_list; | |
810 | struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; | |
811 | struct timer_list sta_cleanup; | |
812 | struct work_struct sta_finish_work; | |
813 | int sta_generation; | |
814 | ||
815 | struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; | |
816 | struct tasklet_struct tx_pending_tasklet; | |
817 | ||
818 | atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; | |
819 | ||
820 | /* number of interfaces with corresponding IFF_ flags */ | |
821 | atomic_t iff_allmultis, iff_promiscs; | |
822 | ||
823 | struct rate_control_ref *rate_ctrl; | |
824 | ||
825 | struct crypto_cipher *wep_tx_tfm; | |
826 | struct crypto_cipher *wep_rx_tfm; | |
827 | u32 wep_iv; | |
828 | ||
829 | /* see iface.c */ | |
830 | struct list_head interfaces; | |
831 | struct mutex iflist_mtx; | |
832 | ||
833 | /* | |
834 | * Key mutex, protects sdata's key_list and sta_info's | |
835 | * key pointers (write access, they're RCU.) | |
836 | */ | |
837 | struct mutex key_mtx; | |
838 | ||
839 | /* mutex for scan and work locking */ | |
840 | struct mutex mtx; | |
841 | ||
842 | /* Scanning and BSS list */ | |
843 | unsigned long scanning; | |
844 | struct cfg80211_ssid scan_ssid; | |
845 | struct cfg80211_scan_request *int_scan_req; | |
846 | struct cfg80211_scan_request *scan_req, *hw_scan_req; | |
847 | struct ieee80211_channel *scan_channel; | |
848 | enum ieee80211_band hw_scan_band; | |
849 | int scan_channel_idx; | |
850 | int scan_ies_len; | |
851 | ||
852 | bool sched_scanning; | |
853 | struct ieee80211_sched_scan_ies sched_scan_ies; | |
854 | struct work_struct sched_scan_stopped_work; | |
855 | ||
856 | unsigned long leave_oper_channel_time; | |
857 | enum mac80211_scan_state next_scan_state; | |
858 | struct delayed_work scan_work; | |
859 | struct ieee80211_sub_if_data *scan_sdata; | |
860 | enum nl80211_channel_type _oper_channel_type; | |
861 | struct ieee80211_channel *oper_channel, *csa_channel; | |
862 | ||
863 | /* Temporary remain-on-channel for off-channel operations */ | |
864 | struct ieee80211_channel *tmp_channel; | |
865 | enum nl80211_channel_type tmp_channel_type; | |
866 | ||
867 | /* SNMP counters */ | |
868 | /* dot11CountersTable */ | |
869 | u32 dot11TransmittedFragmentCount; | |
870 | u32 dot11MulticastTransmittedFrameCount; | |
871 | u32 dot11FailedCount; | |
872 | u32 dot11RetryCount; | |
873 | u32 dot11MultipleRetryCount; | |
874 | u32 dot11FrameDuplicateCount; | |
875 | u32 dot11ReceivedFragmentCount; | |
876 | u32 dot11MulticastReceivedFrameCount; | |
877 | u32 dot11TransmittedFrameCount; | |
878 | ||
879 | #ifdef CONFIG_MAC80211_LEDS | |
880 | int tx_led_counter, rx_led_counter; | |
881 | struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; | |
882 | struct tpt_led_trigger *tpt_led_trigger; | |
883 | char tx_led_name[32], rx_led_name[32], | |
884 | assoc_led_name[32], radio_led_name[32]; | |
885 | #endif | |
886 | ||
887 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
888 | /* TX/RX handler statistics */ | |
889 | unsigned int tx_handlers_drop; | |
890 | unsigned int tx_handlers_queued; | |
891 | unsigned int tx_handlers_drop_unencrypted; | |
892 | unsigned int tx_handlers_drop_fragment; | |
893 | unsigned int tx_handlers_drop_wep; | |
894 | unsigned int tx_handlers_drop_not_assoc; | |
895 | unsigned int tx_handlers_drop_unauth_port; | |
896 | unsigned int rx_handlers_drop; | |
897 | unsigned int rx_handlers_queued; | |
898 | unsigned int rx_handlers_drop_nullfunc; | |
899 | unsigned int rx_handlers_drop_defrag; | |
900 | unsigned int rx_handlers_drop_short; | |
901 | unsigned int rx_handlers_drop_passive_scan; | |
902 | unsigned int tx_expand_skb_head; | |
903 | unsigned int tx_expand_skb_head_cloned; | |
904 | unsigned int rx_expand_skb_head; | |
905 | unsigned int rx_expand_skb_head2; | |
906 | unsigned int rx_handlers_fragments; | |
907 | unsigned int tx_status_drop; | |
908 | #define I802_DEBUG_INC(c) (c)++ | |
909 | #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
910 | #define I802_DEBUG_INC(c) do { } while (0) | |
911 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
912 | ||
913 | ||
914 | int total_ps_buffered; /* total number of all buffered unicast and | |
915 | * multicast packets for power saving stations | |
916 | */ | |
917 | int wifi_wme_noack_test; | |
918 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ | |
919 | ||
920 | /* | |
921 | * Bitmask of enabled u-apsd queues, | |
922 | * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association | |
923 | * to take effect. | |
924 | */ | |
925 | unsigned int uapsd_queues; | |
926 | ||
927 | /* | |
928 | * Maximum number of buffered frames AP can deliver during a | |
929 | * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. | |
930 | * Needs a new association to take effect. | |
931 | */ | |
932 | unsigned int uapsd_max_sp_len; | |
933 | ||
934 | bool pspolling; | |
935 | bool offchannel_ps_enabled; | |
936 | /* | |
937 | * PS can only be enabled when we have exactly one managed | |
938 | * interface (and monitors) in PS, this then points there. | |
939 | */ | |
940 | struct ieee80211_sub_if_data *ps_sdata; | |
941 | struct work_struct dynamic_ps_enable_work; | |
942 | struct work_struct dynamic_ps_disable_work; | |
943 | struct timer_list dynamic_ps_timer; | |
944 | struct notifier_block network_latency_notifier; | |
945 | struct notifier_block ifa_notifier; | |
946 | ||
947 | /* | |
948 | * The dynamic ps timeout configured from user space via WEXT - | |
949 | * this will override whatever chosen by mac80211 internally. | |
950 | */ | |
951 | int dynamic_ps_forced_timeout; | |
952 | int dynamic_ps_user_timeout; | |
953 | bool disable_dynamic_ps; | |
954 | ||
955 | int user_power_level; /* in dBm */ | |
956 | int power_constr_level; /* in dBm */ | |
957 | ||
958 | enum ieee80211_smps_mode smps_mode; | |
959 | ||
960 | struct work_struct restart_work; | |
961 | ||
962 | #ifdef CONFIG_MAC80211_DEBUGFS | |
963 | struct local_debugfsdentries { | |
964 | struct dentry *rcdir; | |
965 | struct dentry *keys; | |
966 | } debugfs; | |
967 | #endif | |
968 | ||
969 | struct ieee80211_channel *hw_roc_channel; | |
970 | struct net_device *hw_roc_dev; | |
971 | struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; | |
972 | struct work_struct hw_roc_start, hw_roc_done; | |
973 | enum nl80211_channel_type hw_roc_channel_type; | |
974 | unsigned int hw_roc_duration; | |
975 | u32 hw_roc_cookie; | |
976 | bool hw_roc_for_tx; | |
977 | unsigned long hw_offchan_tx_cookie; | |
978 | ||
979 | /* dummy netdev for use w/ NAPI */ | |
980 | struct net_device napi_dev; | |
981 | ||
982 | struct napi_struct napi; | |
983 | }; | |
984 | ||
985 | static inline struct ieee80211_sub_if_data * | |
986 | IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) | |
987 | { | |
988 | return netdev_priv(dev); | |
989 | } | |
990 | ||
991 | /* this struct represents 802.11n's RA/TID combination */ | |
992 | struct ieee80211_ra_tid { | |
993 | u8 ra[ETH_ALEN]; | |
994 | u16 tid; | |
995 | }; | |
996 | ||
997 | /* Parsed Information Elements */ | |
998 | struct ieee802_11_elems { | |
999 | u8 *ie_start; | |
1000 | size_t total_len; | |
1001 | ||
1002 | /* pointers to IEs */ | |
1003 | u8 *ssid; | |
1004 | u8 *supp_rates; | |
1005 | u8 *fh_params; | |
1006 | u8 *ds_params; | |
1007 | u8 *cf_params; | |
1008 | struct ieee80211_tim_ie *tim; | |
1009 | u8 *ibss_params; | |
1010 | u8 *challenge; | |
1011 | u8 *wpa; | |
1012 | u8 *rsn; | |
1013 | u8 *erp_info; | |
1014 | u8 *ext_supp_rates; | |
1015 | u8 *wmm_info; | |
1016 | u8 *wmm_param; | |
1017 | struct ieee80211_ht_cap *ht_cap_elem; | |
1018 | struct ieee80211_ht_info *ht_info_elem; | |
1019 | struct ieee80211_meshconf_ie *mesh_config; | |
1020 | u8 *mesh_id; | |
1021 | u8 *peer_link; | |
1022 | u8 *preq; | |
1023 | u8 *prep; | |
1024 | u8 *perr; | |
1025 | struct ieee80211_rann_ie *rann; | |
1026 | u8 *ch_switch_elem; | |
1027 | u8 *country_elem; | |
1028 | u8 *pwr_constr_elem; | |
1029 | u8 *quiet_elem; /* first quite element */ | |
1030 | u8 *timeout_int; | |
1031 | ||
1032 | /* length of them, respectively */ | |
1033 | u8 ssid_len; | |
1034 | u8 supp_rates_len; | |
1035 | u8 fh_params_len; | |
1036 | u8 ds_params_len; | |
1037 | u8 cf_params_len; | |
1038 | u8 tim_len; | |
1039 | u8 ibss_params_len; | |
1040 | u8 challenge_len; | |
1041 | u8 wpa_len; | |
1042 | u8 rsn_len; | |
1043 | u8 erp_info_len; | |
1044 | u8 ext_supp_rates_len; | |
1045 | u8 wmm_info_len; | |
1046 | u8 wmm_param_len; | |
1047 | u8 mesh_id_len; | |
1048 | u8 peer_link_len; | |
1049 | u8 preq_len; | |
1050 | u8 prep_len; | |
1051 | u8 perr_len; | |
1052 | u8 ch_switch_elem_len; | |
1053 | u8 country_elem_len; | |
1054 | u8 pwr_constr_elem_len; | |
1055 | u8 quiet_elem_len; | |
1056 | u8 num_of_quiet_elem; /* can be more the one */ | |
1057 | u8 timeout_int_len; | |
1058 | }; | |
1059 | ||
1060 | static inline struct ieee80211_local *hw_to_local( | |
1061 | struct ieee80211_hw *hw) | |
1062 | { | |
1063 | return container_of(hw, struct ieee80211_local, hw); | |
1064 | } | |
1065 | ||
1066 | static inline struct ieee80211_hw *local_to_hw( | |
1067 | struct ieee80211_local *local) | |
1068 | { | |
1069 | return &local->hw; | |
1070 | } | |
1071 | ||
1072 | ||
1073 | static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) | |
1074 | { | |
1075 | return compare_ether_addr(raddr, addr) == 0 || | |
1076 | is_broadcast_ether_addr(raddr); | |
1077 | } | |
1078 | ||
1079 | ||
1080 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); | |
1081 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); | |
1082 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, | |
1083 | u32 changed); | |
1084 | void ieee80211_configure_filter(struct ieee80211_local *local); | |
1085 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); | |
1086 | ||
1087 | /* STA code */ | |
1088 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
1089 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
1090 | struct cfg80211_auth_request *req); | |
1091 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, | |
1092 | struct cfg80211_assoc_request *req); | |
1093 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, | |
1094 | struct cfg80211_deauth_request *req, | |
1095 | void *cookie); | |
1096 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, | |
1097 | struct cfg80211_disassoc_request *req, | |
1098 | void *cookie); | |
1099 | void ieee80211_send_pspoll(struct ieee80211_local *local, | |
1100 | struct ieee80211_sub_if_data *sdata); | |
1101 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); | |
1102 | int ieee80211_max_network_latency(struct notifier_block *nb, | |
1103 | unsigned long data, void *dummy); | |
1104 | int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); | |
1105 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
1106 | struct ieee80211_channel_sw_ie *sw_elem, | |
1107 | struct ieee80211_bss *bss, | |
1108 | u64 timestamp); | |
1109 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); | |
1110 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); | |
1111 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); | |
1112 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1113 | struct sk_buff *skb); | |
1114 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); | |
1115 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); | |
1116 | ||
1117 | /* IBSS code */ | |
1118 | void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); | |
1119 | void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
1120 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, | |
1121 | u8 *bssid, u8 *addr, u32 supp_rates, | |
1122 | gfp_t gfp); | |
1123 | int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, | |
1124 | struct cfg80211_ibss_params *params); | |
1125 | int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); | |
1126 | void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); | |
1127 | void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); | |
1128 | void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); | |
1129 | void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1130 | struct sk_buff *skb); | |
1131 | ||
1132 | /* mesh code */ | |
1133 | void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); | |
1134 | void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, | |
1135 | struct sk_buff *skb); | |
1136 | ||
1137 | /* scan/BSS handling */ | |
1138 | void ieee80211_scan_work(struct work_struct *work); | |
1139 | int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, | |
1140 | const u8 *ssid, u8 ssid_len, | |
1141 | struct ieee80211_channel *chan); | |
1142 | int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, | |
1143 | struct cfg80211_scan_request *req); | |
1144 | void ieee80211_scan_cancel(struct ieee80211_local *local); | |
1145 | ieee80211_rx_result | |
1146 | ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1147 | ||
1148 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); | |
1149 | struct ieee80211_bss * | |
1150 | ieee80211_bss_info_update(struct ieee80211_local *local, | |
1151 | struct ieee80211_rx_status *rx_status, | |
1152 | struct ieee80211_mgmt *mgmt, | |
1153 | size_t len, | |
1154 | struct ieee802_11_elems *elems, | |
1155 | struct ieee80211_channel *channel, | |
1156 | bool beacon); | |
1157 | struct ieee80211_bss * | |
1158 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, | |
1159 | u8 *ssid, u8 ssid_len); | |
1160 | void ieee80211_rx_bss_put(struct ieee80211_local *local, | |
1161 | struct ieee80211_bss *bss); | |
1162 | ||
1163 | /* scheduled scan handling */ | |
1164 | int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, | |
1165 | struct cfg80211_sched_scan_request *req); | |
1166 | int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); | |
1167 | void ieee80211_sched_scan_stopped_work(struct work_struct *work); | |
1168 | ||
1169 | /* off-channel helpers */ | |
1170 | bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); | |
1171 | void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, | |
1172 | bool tell_ap); | |
1173 | void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, | |
1174 | bool offchannel_ps_enable); | |
1175 | void ieee80211_offchannel_return(struct ieee80211_local *local, | |
1176 | bool enable_beaconing, | |
1177 | bool offchannel_ps_disable); | |
1178 | void ieee80211_hw_roc_setup(struct ieee80211_local *local); | |
1179 | ||
1180 | /* interface handling */ | |
1181 | int ieee80211_iface_init(void); | |
1182 | void ieee80211_iface_exit(void); | |
1183 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, | |
1184 | struct net_device **new_dev, enum nl80211_iftype type, | |
1185 | struct vif_params *params); | |
1186 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, | |
1187 | enum nl80211_iftype type); | |
1188 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); | |
1189 | void ieee80211_remove_interfaces(struct ieee80211_local *local); | |
1190 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local); | |
1191 | void ieee80211_recalc_idle(struct ieee80211_local *local); | |
1192 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, | |
1193 | const int offset); | |
1194 | ||
1195 | static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) | |
1196 | { | |
1197 | return test_bit(SDATA_STATE_RUNNING, &sdata->state); | |
1198 | } | |
1199 | ||
1200 | /* tx handling */ | |
1201 | void ieee80211_clear_tx_pending(struct ieee80211_local *local); | |
1202 | void ieee80211_tx_pending(unsigned long data); | |
1203 | netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, | |
1204 | struct net_device *dev); | |
1205 | netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, | |
1206 | struct net_device *dev); | |
1207 | ||
1208 | /* | |
1209 | * radiotap header for status frames | |
1210 | */ | |
1211 | struct ieee80211_tx_status_rtap_hdr { | |
1212 | struct ieee80211_radiotap_header hdr; | |
1213 | u8 rate; | |
1214 | u8 padding_for_rate; | |
1215 | __le16 tx_flags; | |
1216 | u8 data_retries; | |
1217 | } __packed; | |
1218 | ||
1219 | ||
1220 | /* HT */ | |
1221 | void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, | |
1222 | struct ieee80211_ht_cap *ht_cap_ie, | |
1223 | struct ieee80211_sta_ht_cap *ht_cap); | |
1224 | void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); | |
1225 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, | |
1226 | const u8 *da, u16 tid, | |
1227 | u16 initiator, u16 reason_code); | |
1228 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, | |
1229 | enum ieee80211_smps_mode smps, const u8 *da, | |
1230 | const u8 *bssid); | |
1231 | void ieee80211_request_smps_work(struct work_struct *work); | |
1232 | ||
1233 | void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, | |
1234 | u16 initiator, u16 reason, bool stop); | |
1235 | void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, | |
1236 | u16 initiator, u16 reason, bool stop); | |
1237 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); | |
1238 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, | |
1239 | struct sta_info *sta, | |
1240 | struct ieee80211_mgmt *mgmt, size_t len); | |
1241 | void ieee80211_process_addba_resp(struct ieee80211_local *local, | |
1242 | struct sta_info *sta, | |
1243 | struct ieee80211_mgmt *mgmt, | |
1244 | size_t len); | |
1245 | void ieee80211_process_addba_request(struct ieee80211_local *local, | |
1246 | struct sta_info *sta, | |
1247 | struct ieee80211_mgmt *mgmt, | |
1248 | size_t len); | |
1249 | ||
1250 | int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1251 | enum ieee80211_back_parties initiator, | |
1252 | bool tx); | |
1253 | int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1254 | enum ieee80211_back_parties initiator, | |
1255 | bool tx); | |
1256 | void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); | |
1257 | void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); | |
1258 | void ieee80211_ba_session_work(struct work_struct *work); | |
1259 | void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); | |
1260 | void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); | |
1261 | ||
1262 | /* Spectrum management */ | |
1263 | void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, | |
1264 | struct ieee80211_mgmt *mgmt, | |
1265 | size_t len); | |
1266 | ||
1267 | /* Suspend/resume and hw reconfiguration */ | |
1268 | int ieee80211_reconfig(struct ieee80211_local *local); | |
1269 | void ieee80211_stop_device(struct ieee80211_local *local); | |
1270 | ||
1271 | #ifdef CONFIG_PM | |
1272 | int __ieee80211_suspend(struct ieee80211_hw *hw, | |
1273 | struct cfg80211_wowlan *wowlan); | |
1274 | ||
1275 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1276 | { | |
1277 | struct ieee80211_local *local = hw_to_local(hw); | |
1278 | ||
1279 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), | |
1280 | "%s: resume with hardware scan still in progress\n", | |
1281 | wiphy_name(hw->wiphy)); | |
1282 | ||
1283 | return ieee80211_reconfig(hw_to_local(hw)); | |
1284 | } | |
1285 | #else | |
1286 | static inline int __ieee80211_suspend(struct ieee80211_hw *hw, | |
1287 | struct cfg80211_wowlan *wowlan) | |
1288 | { | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1293 | { | |
1294 | return 0; | |
1295 | } | |
1296 | #endif | |
1297 | ||
1298 | /* utility functions/constants */ | |
1299 | extern void *mac80211_wiphy_privid; /* for wiphy privid */ | |
1300 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, | |
1301 | enum nl80211_iftype type); | |
1302 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
1303 | int rate, int erp, int short_preamble); | |
1304 | void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, | |
1305 | struct ieee80211_hdr *hdr, const u8 *tsc, | |
1306 | gfp_t gfp); | |
1307 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); | |
1308 | void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1309 | void ieee802_11_parse_elems(u8 *start, size_t len, | |
1310 | struct ieee802_11_elems *elems); | |
1311 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
1312 | struct ieee802_11_elems *elems, | |
1313 | u64 filter, u32 crc); | |
1314 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, | |
1315 | enum ieee80211_band band); | |
1316 | ||
1317 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work); | |
1318 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work); | |
1319 | void ieee80211_dynamic_ps_timer(unsigned long data); | |
1320 | void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
1321 | struct ieee80211_sub_if_data *sdata, | |
1322 | int powersave); | |
1323 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, | |
1324 | struct ieee80211_hdr *hdr); | |
1325 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
1326 | struct ieee80211_hdr *hdr, bool ack); | |
1327 | void ieee80211_beacon_connection_loss_work(struct work_struct *work); | |
1328 | ||
1329 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, | |
1330 | enum queue_stop_reason reason); | |
1331 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, | |
1332 | enum queue_stop_reason reason); | |
1333 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1334 | enum queue_stop_reason reason); | |
1335 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1336 | enum queue_stop_reason reason); | |
1337 | void ieee80211_add_pending_skb(struct ieee80211_local *local, | |
1338 | struct sk_buff *skb); | |
1339 | int ieee80211_add_pending_skbs(struct ieee80211_local *local, | |
1340 | struct sk_buff_head *skbs); | |
1341 | int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, | |
1342 | struct sk_buff_head *skbs, | |
1343 | void (*fn)(void *data), void *data); | |
1344 | ||
1345 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
1346 | u16 transaction, u16 auth_alg, | |
1347 | u8 *extra, size_t extra_len, const u8 *bssid, | |
1348 | const u8 *key, u8 key_len, u8 key_idx); | |
1349 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, | |
1350 | const u8 *ie, size_t ie_len, | |
1351 | enum ieee80211_band band, u32 rate_mask, | |
1352 | u8 channel); | |
1353 | struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, | |
1354 | u8 *dst, | |
1355 | const u8 *ssid, size_t ssid_len, | |
1356 | const u8 *ie, size_t ie_len, | |
1357 | bool directed); | |
1358 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1359 | const u8 *ssid, size_t ssid_len, | |
1360 | const u8 *ie, size_t ie_len, | |
1361 | bool directed); | |
1362 | ||
1363 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, | |
1364 | const size_t supp_rates_len, | |
1365 | const u8 *supp_rates); | |
1366 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1367 | struct ieee802_11_elems *elems, | |
1368 | enum ieee80211_band band); | |
1369 | int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, | |
1370 | enum ieee80211_smps_mode smps_mode); | |
1371 | void ieee80211_recalc_smps(struct ieee80211_local *local); | |
1372 | ||
1373 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1374 | const u8 *ids, int n_ids, size_t offset); | |
1375 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); | |
1376 | ||
1377 | /* internal work items */ | |
1378 | void ieee80211_work_init(struct ieee80211_local *local); | |
1379 | void ieee80211_add_work(struct ieee80211_work *wk); | |
1380 | void free_work(struct ieee80211_work *wk); | |
1381 | void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); | |
1382 | ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, | |
1383 | struct sk_buff *skb); | |
1384 | int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, | |
1385 | struct ieee80211_channel *chan, | |
1386 | enum nl80211_channel_type channel_type, | |
1387 | unsigned int duration, u64 *cookie); | |
1388 | int ieee80211_wk_cancel_remain_on_channel( | |
1389 | struct ieee80211_sub_if_data *sdata, u64 cookie); | |
1390 | ||
1391 | /* channel management */ | |
1392 | enum ieee80211_chan_mode { | |
1393 | CHAN_MODE_UNDEFINED, | |
1394 | CHAN_MODE_HOPPING, | |
1395 | CHAN_MODE_FIXED, | |
1396 | }; | |
1397 | ||
1398 | enum ieee80211_chan_mode | |
1399 | ieee80211_get_channel_mode(struct ieee80211_local *local, | |
1400 | struct ieee80211_sub_if_data *ignore); | |
1401 | bool ieee80211_set_channel_type(struct ieee80211_local *local, | |
1402 | struct ieee80211_sub_if_data *sdata, | |
1403 | enum nl80211_channel_type chantype); | |
1404 | ||
1405 | #ifdef CONFIG_MAC80211_NOINLINE | |
1406 | #define debug_noinline noinline | |
1407 | #else | |
1408 | #define debug_noinline | |
1409 | #endif | |
1410 | ||
1411 | #endif /* IEEE80211_I_H */ |