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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 <net/ieee80211_radiotap.h> | |
27 | #include <net/cfg80211.h> | |
28 | #include <net/mac80211.h> | |
29 | #include "key.h" | |
30 | #include "sta_info.h" | |
31 | ||
32 | struct ieee80211_local; | |
33 | ||
34 | /* Maximum number of broadcast/multicast frames to buffer when some of the | |
35 | * associated stations are using power saving. */ | |
36 | #define AP_MAX_BC_BUFFER 128 | |
37 | ||
38 | /* Maximum number of frames buffered to all STAs, including multicast frames. | |
39 | * Note: increasing this limit increases the potential memory requirement. Each | |
40 | * frame can be up to about 2 kB long. */ | |
41 | #define TOTAL_MAX_TX_BUFFER 512 | |
42 | ||
43 | /* Required encryption head and tailroom */ | |
44 | #define IEEE80211_ENCRYPT_HEADROOM 8 | |
45 | #define IEEE80211_ENCRYPT_TAILROOM 18 | |
46 | ||
47 | /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent | |
48 | * reception of at least three fragmented frames. This limit can be increased | |
49 | * by changing this define, at the cost of slower frame reassembly and | |
50 | * increased memory use (about 2 kB of RAM per entry). */ | |
51 | #define IEEE80211_FRAGMENT_MAX 4 | |
52 | ||
53 | /* | |
54 | * Time after which we ignore scan results and no longer report/use | |
55 | * them in any way. | |
56 | */ | |
57 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
58 | ||
59 | #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) | |
60 | ||
61 | #define IEEE80211_DEFAULT_UAPSD_QUEUES \ | |
62 | (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ | |
63 | IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ | |
64 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ | |
65 | IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) | |
66 | ||
67 | #define IEEE80211_DEFAULT_MAX_SP_LEN \ | |
68 | IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL | |
69 | ||
70 | struct ieee80211_fragment_entry { | |
71 | unsigned long first_frag_time; | |
72 | unsigned int seq; | |
73 | unsigned int rx_queue; | |
74 | unsigned int last_frag; | |
75 | unsigned int extra_len; | |
76 | struct sk_buff_head skb_list; | |
77 | int ccmp; /* Whether fragments were encrypted with CCMP */ | |
78 | u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ | |
79 | }; | |
80 | ||
81 | ||
82 | struct ieee80211_bss { | |
83 | /* don't want to look up all the time */ | |
84 | size_t ssid_len; | |
85 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
86 | ||
87 | u8 dtim_period; | |
88 | ||
89 | bool wmm_used; | |
90 | bool uapsd_supported; | |
91 | ||
92 | unsigned long last_probe_resp; | |
93 | ||
94 | #ifdef CONFIG_MAC80211_MESH | |
95 | u8 *mesh_id; | |
96 | size_t mesh_id_len; | |
97 | u8 *mesh_cfg; | |
98 | #endif | |
99 | ||
100 | #define IEEE80211_MAX_SUPP_RATES 32 | |
101 | u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; | |
102 | size_t supp_rates_len; | |
103 | ||
104 | /* | |
105 | * During assocation, we save an ERP value from a probe response so | |
106 | * that we can feed ERP info to the driver when handling the | |
107 | * association completes. these fields probably won't be up-to-date | |
108 | * otherwise, you probably don't want to use them. | |
109 | */ | |
110 | bool has_erp_value; | |
111 | u8 erp_value; | |
112 | }; | |
113 | ||
114 | static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) | |
115 | { | |
116 | #ifdef CONFIG_MAC80211_MESH | |
117 | return bss->mesh_cfg; | |
118 | #endif | |
119 | return NULL; | |
120 | } | |
121 | ||
122 | static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) | |
123 | { | |
124 | #ifdef CONFIG_MAC80211_MESH | |
125 | return bss->mesh_id; | |
126 | #endif | |
127 | return NULL; | |
128 | } | |
129 | ||
130 | static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) | |
131 | { | |
132 | #ifdef CONFIG_MAC80211_MESH | |
133 | return bss->mesh_id_len; | |
134 | #endif | |
135 | return 0; | |
136 | } | |
137 | ||
138 | ||
139 | typedef unsigned __bitwise__ ieee80211_tx_result; | |
140 | #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) | |
141 | #define TX_DROP ((__force ieee80211_tx_result) 1u) | |
142 | #define TX_QUEUED ((__force ieee80211_tx_result) 2u) | |
143 | ||
144 | #define IEEE80211_TX_FRAGMENTED BIT(0) | |
145 | #define IEEE80211_TX_UNICAST BIT(1) | |
146 | #define IEEE80211_TX_PS_BUFFERED BIT(2) | |
147 | ||
148 | struct ieee80211_tx_data { | |
149 | struct sk_buff *skb; | |
150 | struct ieee80211_local *local; | |
151 | struct ieee80211_sub_if_data *sdata; | |
152 | struct sta_info *sta; | |
153 | struct ieee80211_key *key; | |
154 | ||
155 | struct ieee80211_channel *channel; | |
156 | ||
157 | u16 ethertype; | |
158 | unsigned int flags; | |
159 | }; | |
160 | ||
161 | ||
162 | typedef unsigned __bitwise__ ieee80211_rx_result; | |
163 | #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) | |
164 | #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) | |
165 | #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) | |
166 | #define RX_QUEUED ((__force ieee80211_rx_result) 3u) | |
167 | ||
168 | #define IEEE80211_RX_IN_SCAN BIT(0) | |
169 | /* frame is destined to interface currently processed (incl. multicast frames) */ | |
170 | #define IEEE80211_RX_RA_MATCH BIT(1) | |
171 | #define IEEE80211_RX_AMSDU BIT(2) | |
172 | #define IEEE80211_RX_FRAGMENTED BIT(3) | |
173 | /* only add flags here that do not change with subframes of an aMPDU */ | |
174 | ||
175 | struct ieee80211_rx_data { | |
176 | struct sk_buff *skb; | |
177 | struct ieee80211_local *local; | |
178 | struct ieee80211_sub_if_data *sdata; | |
179 | struct sta_info *sta; | |
180 | struct ieee80211_key *key; | |
181 | ||
182 | unsigned int flags; | |
183 | int queue; | |
184 | u32 tkip_iv32; | |
185 | u16 tkip_iv16; | |
186 | }; | |
187 | ||
188 | struct beacon_data { | |
189 | u8 *head, *tail; | |
190 | int head_len, tail_len; | |
191 | int dtim_period; | |
192 | }; | |
193 | ||
194 | struct ieee80211_if_ap { | |
195 | struct beacon_data *beacon; | |
196 | ||
197 | struct list_head vlans; | |
198 | ||
199 | /* yes, this looks ugly, but guarantees that we can later use | |
200 | * bitmap_empty :) | |
201 | * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ | |
202 | u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; | |
203 | struct sk_buff_head ps_bc_buf; | |
204 | atomic_t num_sta_ps; /* number of stations in PS mode */ | |
205 | int dtim_count; | |
206 | }; | |
207 | ||
208 | struct ieee80211_if_wds { | |
209 | struct sta_info *sta; | |
210 | u8 remote_addr[ETH_ALEN]; | |
211 | }; | |
212 | ||
213 | struct ieee80211_if_vlan { | |
214 | struct list_head list; | |
215 | ||
216 | /* used for all tx if the VLAN is configured to 4-addr mode */ | |
217 | struct sta_info *sta; | |
218 | }; | |
219 | ||
220 | struct mesh_stats { | |
221 | __u32 fwded_mcast; /* Mesh forwarded multicast frames */ | |
222 | __u32 fwded_unicast; /* Mesh forwarded unicast frames */ | |
223 | __u32 fwded_frames; /* Mesh total forwarded frames */ | |
224 | __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ | |
225 | __u32 dropped_frames_no_route; /* Not transmitted, no route found */ | |
226 | atomic_t estab_plinks; | |
227 | }; | |
228 | ||
229 | #define PREQ_Q_F_START 0x1 | |
230 | #define PREQ_Q_F_REFRESH 0x2 | |
231 | struct mesh_preq_queue { | |
232 | struct list_head list; | |
233 | u8 dst[ETH_ALEN]; | |
234 | u8 flags; | |
235 | }; | |
236 | ||
237 | enum ieee80211_work_type { | |
238 | IEEE80211_WORK_ABORT, | |
239 | IEEE80211_WORK_DIRECT_PROBE, | |
240 | IEEE80211_WORK_AUTH, | |
241 | IEEE80211_WORK_ASSOC, | |
242 | IEEE80211_WORK_REMAIN_ON_CHANNEL, | |
243 | }; | |
244 | ||
245 | /** | |
246 | * enum work_done_result - indicates what to do after work was done | |
247 | * | |
248 | * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. | |
249 | * @WORK_DONE_REQUEUE: This work item was reset to be reused, and | |
250 | * should be requeued. | |
251 | */ | |
252 | enum work_done_result { | |
253 | WORK_DONE_DESTROY, | |
254 | WORK_DONE_REQUEUE, | |
255 | }; | |
256 | ||
257 | struct ieee80211_work { | |
258 | struct list_head list; | |
259 | ||
260 | struct rcu_head rcu_head; | |
261 | ||
262 | struct ieee80211_sub_if_data *sdata; | |
263 | ||
264 | enum work_done_result (*done)(struct ieee80211_work *wk, | |
265 | struct sk_buff *skb); | |
266 | ||
267 | struct ieee80211_channel *chan; | |
268 | enum nl80211_channel_type chan_type; | |
269 | ||
270 | unsigned long timeout; | |
271 | enum ieee80211_work_type type; | |
272 | ||
273 | u8 filter_ta[ETH_ALEN]; | |
274 | ||
275 | bool started; | |
276 | ||
277 | union { | |
278 | struct { | |
279 | int tries; | |
280 | u16 algorithm, transaction; | |
281 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
282 | u8 ssid_len; | |
283 | u8 key[WLAN_KEY_LEN_WEP104]; | |
284 | u8 key_len, key_idx; | |
285 | bool privacy; | |
286 | } probe_auth; | |
287 | struct { | |
288 | struct cfg80211_bss *bss; | |
289 | const u8 *supp_rates; | |
290 | const u8 *ht_information_ie; | |
291 | enum ieee80211_smps_mode smps; | |
292 | int tries; | |
293 | u16 capability; | |
294 | u8 prev_bssid[ETH_ALEN]; | |
295 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
296 | u8 ssid_len; | |
297 | u8 supp_rates_len; | |
298 | bool wmm_used, use_11n, uapsd_used; | |
299 | } assoc; | |
300 | struct { | |
301 | u32 duration; | |
302 | } remain; | |
303 | }; | |
304 | ||
305 | int ie_len; | |
306 | /* must be last */ | |
307 | u8 ie[0]; | |
308 | }; | |
309 | ||
310 | /* flags used in struct ieee80211_if_managed.flags */ | |
311 | enum ieee80211_sta_flags { | |
312 | IEEE80211_STA_BEACON_POLL = BIT(0), | |
313 | IEEE80211_STA_CONNECTION_POLL = BIT(1), | |
314 | IEEE80211_STA_CONTROL_PORT = BIT(2), | |
315 | IEEE80211_STA_DISABLE_11N = BIT(4), | |
316 | IEEE80211_STA_CSA_RECEIVED = BIT(5), | |
317 | IEEE80211_STA_MFP_ENABLED = BIT(6), | |
318 | IEEE80211_STA_UAPSD_ENABLED = BIT(7), | |
319 | IEEE80211_STA_NULLFUNC_ACKED = BIT(8), | |
320 | IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), | |
321 | }; | |
322 | ||
323 | struct ieee80211_if_managed { | |
324 | struct timer_list timer; | |
325 | struct timer_list conn_mon_timer; | |
326 | struct timer_list bcn_mon_timer; | |
327 | struct timer_list chswitch_timer; | |
328 | struct work_struct work; | |
329 | struct work_struct monitor_work; | |
330 | struct work_struct chswitch_work; | |
331 | struct work_struct beacon_connection_loss_work; | |
332 | ||
333 | unsigned long probe_timeout; | |
334 | int probe_send_count; | |
335 | ||
336 | struct mutex mtx; | |
337 | struct cfg80211_bss *associated; | |
338 | ||
339 | u8 bssid[ETH_ALEN]; | |
340 | ||
341 | u16 aid; | |
342 | ||
343 | struct sk_buff_head skb_queue; | |
344 | ||
345 | unsigned long timers_running; /* used for quiesce/restart */ | |
346 | bool powersave; /* powersave requested for this iface */ | |
347 | enum ieee80211_smps_mode req_smps, /* requested smps mode */ | |
348 | ap_smps; /* smps mode AP thinks we're in */ | |
349 | ||
350 | unsigned int flags; | |
351 | ||
352 | u32 beacon_crc; | |
353 | ||
354 | enum { | |
355 | IEEE80211_MFP_DISABLED, | |
356 | IEEE80211_MFP_OPTIONAL, | |
357 | IEEE80211_MFP_REQUIRED | |
358 | } mfp; /* management frame protection */ | |
359 | ||
360 | int wmm_last_param_set; | |
361 | ||
362 | u8 use_4addr; | |
363 | ||
364 | /* Signal strength from the last Beacon frame in the current BSS. */ | |
365 | int last_beacon_signal; | |
366 | ||
367 | /* | |
368 | * Weighted average of the signal strength from Beacon frames in the | |
369 | * current BSS. This is in units of 1/16 of the signal unit to maintain | |
370 | * accuracy and to speed up calculations, i.e., the value need to be | |
371 | * divided by 16 to get the actual value. | |
372 | */ | |
373 | int ave_beacon_signal; | |
374 | ||
375 | /* | |
376 | * Last Beacon frame signal strength average (ave_beacon_signal / 16) | |
377 | * that triggered a cqm event. 0 indicates that no event has been | |
378 | * generated for the current association. | |
379 | */ | |
380 | int last_cqm_event_signal; | |
381 | }; | |
382 | ||
383 | enum ieee80211_ibss_request { | |
384 | IEEE80211_IBSS_REQ_RUN = 0, | |
385 | }; | |
386 | ||
387 | struct ieee80211_if_ibss { | |
388 | struct timer_list timer; | |
389 | struct work_struct work; | |
390 | ||
391 | struct sk_buff_head skb_queue; | |
392 | ||
393 | unsigned long request; | |
394 | unsigned long last_scan_completed; | |
395 | ||
396 | bool timer_running; | |
397 | ||
398 | bool fixed_bssid; | |
399 | bool fixed_channel; | |
400 | bool privacy; | |
401 | ||
402 | u8 bssid[ETH_ALEN]; | |
403 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
404 | u8 ssid_len, ie_len; | |
405 | u8 *ie; | |
406 | struct ieee80211_channel *channel; | |
407 | ||
408 | unsigned long ibss_join_req; | |
409 | /* probe response/beacon for IBSS */ | |
410 | struct sk_buff *presp, *skb; | |
411 | ||
412 | enum { | |
413 | IEEE80211_IBSS_MLME_SEARCH, | |
414 | IEEE80211_IBSS_MLME_JOINED, | |
415 | } state; | |
416 | }; | |
417 | ||
418 | struct ieee80211_if_mesh { | |
419 | struct work_struct work; | |
420 | struct timer_list housekeeping_timer; | |
421 | struct timer_list mesh_path_timer; | |
422 | struct timer_list mesh_path_root_timer; | |
423 | struct sk_buff_head skb_queue; | |
424 | ||
425 | unsigned long timers_running; | |
426 | ||
427 | unsigned long wrkq_flags; | |
428 | ||
429 | u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; | |
430 | size_t mesh_id_len; | |
431 | /* Active Path Selection Protocol Identifier */ | |
432 | u8 mesh_pp_id; | |
433 | /* Active Path Selection Metric Identifier */ | |
434 | u8 mesh_pm_id; | |
435 | /* Congestion Control Mode Identifier */ | |
436 | u8 mesh_cc_id; | |
437 | /* Synchronization Protocol Identifier */ | |
438 | u8 mesh_sp_id; | |
439 | /* Authentication Protocol Identifier */ | |
440 | u8 mesh_auth_id; | |
441 | /* Local mesh Sequence Number */ | |
442 | u32 sn; | |
443 | /* Last used PREQ ID */ | |
444 | u32 preq_id; | |
445 | atomic_t mpaths; | |
446 | /* Timestamp of last SN update */ | |
447 | unsigned long last_sn_update; | |
448 | /* Timestamp of last SN sent */ | |
449 | unsigned long last_preq; | |
450 | struct mesh_rmc *rmc; | |
451 | spinlock_t mesh_preq_queue_lock; | |
452 | struct mesh_preq_queue preq_queue; | |
453 | int preq_queue_len; | |
454 | struct mesh_stats mshstats; | |
455 | struct mesh_config mshcfg; | |
456 | u32 mesh_seqnum; | |
457 | bool accepting_plinks; | |
458 | }; | |
459 | ||
460 | #ifdef CONFIG_MAC80211_MESH | |
461 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
462 | do { (msh)->mshstats.name++; } while (0) | |
463 | #else | |
464 | #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ | |
465 | do { } while (0) | |
466 | #endif | |
467 | ||
468 | /** | |
469 | * enum ieee80211_sub_if_data_flags - virtual interface flags | |
470 | * | |
471 | * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets | |
472 | * @IEEE80211_SDATA_PROMISC: interface is promisc | |
473 | * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode | |
474 | * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between | |
475 | * associated stations and deliver multicast frames both | |
476 | * back to wireless media and to the local net stack. | |
477 | */ | |
478 | enum ieee80211_sub_if_data_flags { | |
479 | IEEE80211_SDATA_ALLMULTI = BIT(0), | |
480 | IEEE80211_SDATA_PROMISC = BIT(1), | |
481 | IEEE80211_SDATA_OPERATING_GMODE = BIT(2), | |
482 | IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), | |
483 | }; | |
484 | ||
485 | struct ieee80211_sub_if_data { | |
486 | struct list_head list; | |
487 | ||
488 | struct wireless_dev wdev; | |
489 | ||
490 | /* keys */ | |
491 | struct list_head key_list; | |
492 | ||
493 | struct net_device *dev; | |
494 | struct ieee80211_local *local; | |
495 | ||
496 | unsigned int flags; | |
497 | ||
498 | int drop_unencrypted; | |
499 | ||
500 | char name[IFNAMSIZ]; | |
501 | ||
502 | /* | |
503 | * keep track of whether the HT opmode (stored in | |
504 | * vif.bss_info.ht_operation_mode) is valid. | |
505 | */ | |
506 | bool ht_opmode_valid; | |
507 | ||
508 | /* Fragment table for host-based reassembly */ | |
509 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; | |
510 | unsigned int fragment_next; | |
511 | ||
512 | #define NUM_DEFAULT_KEYS 4 | |
513 | #define NUM_DEFAULT_MGMT_KEYS 2 | |
514 | struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; | |
515 | struct ieee80211_key *default_key; | |
516 | struct ieee80211_key *default_mgmt_key; | |
517 | ||
518 | u16 sequence_number; | |
519 | ||
520 | /* | |
521 | * AP this belongs to: self in AP mode and | |
522 | * corresponding AP in VLAN mode, NULL for | |
523 | * all others (might be needed later in IBSS) | |
524 | */ | |
525 | struct ieee80211_if_ap *bss; | |
526 | ||
527 | /* bitmap of allowed (non-MCS) rate indexes for rate control */ | |
528 | u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; | |
529 | ||
530 | union { | |
531 | struct ieee80211_if_ap ap; | |
532 | struct ieee80211_if_wds wds; | |
533 | struct ieee80211_if_vlan vlan; | |
534 | struct ieee80211_if_managed mgd; | |
535 | struct ieee80211_if_ibss ibss; | |
536 | #ifdef CONFIG_MAC80211_MESH | |
537 | struct ieee80211_if_mesh mesh; | |
538 | #endif | |
539 | u32 mntr_flags; | |
540 | } u; | |
541 | ||
542 | #ifdef CONFIG_MAC80211_DEBUGFS | |
543 | struct { | |
544 | struct dentry *dir; | |
545 | struct dentry *default_key; | |
546 | struct dentry *default_mgmt_key; | |
547 | } debugfs; | |
548 | #endif | |
549 | /* must be last, dynamically sized area in this! */ | |
550 | struct ieee80211_vif vif; | |
551 | }; | |
552 | ||
553 | static inline | |
554 | struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) | |
555 | { | |
556 | return container_of(p, struct ieee80211_sub_if_data, vif); | |
557 | } | |
558 | ||
559 | static inline void | |
560 | ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, | |
561 | u8 mesh_id_len, u8 *mesh_id) | |
562 | { | |
563 | #ifdef CONFIG_MAC80211_MESH | |
564 | struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; | |
565 | ifmsh->mesh_id_len = mesh_id_len; | |
566 | memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); | |
567 | #else | |
568 | WARN_ON(1); | |
569 | #endif | |
570 | } | |
571 | ||
572 | enum { | |
573 | IEEE80211_RX_MSG = 1, | |
574 | IEEE80211_TX_STATUS_MSG = 2, | |
575 | IEEE80211_DELBA_MSG = 3, | |
576 | IEEE80211_ADDBA_MSG = 4, | |
577 | }; | |
578 | ||
579 | enum queue_stop_reason { | |
580 | IEEE80211_QUEUE_STOP_REASON_DRIVER, | |
581 | IEEE80211_QUEUE_STOP_REASON_PS, | |
582 | IEEE80211_QUEUE_STOP_REASON_CSA, | |
583 | IEEE80211_QUEUE_STOP_REASON_AGGREGATION, | |
584 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, | |
585 | IEEE80211_QUEUE_STOP_REASON_SKB_ADD, | |
586 | }; | |
587 | ||
588 | /** | |
589 | * mac80211 scan flags - currently active scan mode | |
590 | * | |
591 | * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as | |
592 | * well be on the operating channel | |
593 | * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to | |
594 | * determine if we are on the operating channel or not | |
595 | * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning, | |
596 | * gets only set in conjunction with SCAN_SW_SCANNING | |
597 | */ | |
598 | enum { | |
599 | SCAN_SW_SCANNING, | |
600 | SCAN_HW_SCANNING, | |
601 | SCAN_OFF_CHANNEL, | |
602 | }; | |
603 | ||
604 | /** | |
605 | * enum mac80211_scan_state - scan state machine states | |
606 | * | |
607 | * @SCAN_DECISION: Main entry point to the scan state machine, this state | |
608 | * determines if we should keep on scanning or switch back to the | |
609 | * operating channel | |
610 | * @SCAN_SET_CHANNEL: Set the next channel to be scanned | |
611 | * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses | |
612 | * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP | |
613 | * about us leaving the channel and stop all associated STA interfaces | |
614 | * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the | |
615 | * AP about us being back and restart all associated STA interfaces | |
616 | */ | |
617 | enum mac80211_scan_state { | |
618 | SCAN_DECISION, | |
619 | SCAN_SET_CHANNEL, | |
620 | SCAN_SEND_PROBE, | |
621 | SCAN_LEAVE_OPER_CHANNEL, | |
622 | SCAN_ENTER_OPER_CHANNEL, | |
623 | }; | |
624 | ||
625 | struct ieee80211_local { | |
626 | /* embed the driver visible part. | |
627 | * don't cast (use the static inlines below), but we keep | |
628 | * it first anyway so they become a no-op */ | |
629 | struct ieee80211_hw hw; | |
630 | ||
631 | const struct ieee80211_ops *ops; | |
632 | ||
633 | /* | |
634 | * work stuff, potentially off-channel (in the future) | |
635 | */ | |
636 | struct mutex work_mtx; | |
637 | struct list_head work_list; | |
638 | struct timer_list work_timer; | |
639 | struct work_struct work_work; | |
640 | struct sk_buff_head work_skb_queue; | |
641 | ||
642 | /* | |
643 | * private workqueue to mac80211. mac80211 makes this accessible | |
644 | * via ieee80211_queue_work() | |
645 | */ | |
646 | struct workqueue_struct *workqueue; | |
647 | ||
648 | unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; | |
649 | /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ | |
650 | spinlock_t queue_stop_reason_lock; | |
651 | ||
652 | int open_count; | |
653 | int monitors, cooked_mntrs; | |
654 | /* number of interfaces with corresponding FIF_ flags */ | |
655 | int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll; | |
656 | unsigned int filter_flags; /* FIF_* */ | |
657 | ||
658 | /* protects the aggregated multicast list and filter calls */ | |
659 | spinlock_t filter_lock; | |
660 | ||
661 | /* used for uploading changed mc list */ | |
662 | struct work_struct reconfig_filter; | |
663 | ||
664 | /* used to reconfigure hardware SM PS */ | |
665 | struct work_struct recalc_smps; | |
666 | ||
667 | /* aggregated multicast list */ | |
668 | struct dev_addr_list *mc_list; | |
669 | int mc_count; | |
670 | ||
671 | bool tim_in_locked_section; /* see ieee80211_beacon_get() */ | |
672 | ||
673 | /* | |
674 | * suspended is true if we finished all the suspend _and_ we have | |
675 | * not yet come up from resume. This is to be used by mac80211 | |
676 | * to ensure driver sanity during suspend and mac80211's own | |
677 | * sanity. It can eventually be used for WoW as well. | |
678 | */ | |
679 | bool suspended; | |
680 | ||
681 | /* | |
682 | * Resuming is true while suspended, but when we're reprogramming the | |
683 | * hardware -- at that time it's allowed to use ieee80211_queue_work() | |
684 | * again even though some other parts of the stack are still suspended | |
685 | * and we still drop received frames to avoid waking the stack. | |
686 | */ | |
687 | bool resuming; | |
688 | ||
689 | /* | |
690 | * quiescing is true during the suspend process _only_ to | |
691 | * ease timer cancelling etc. | |
692 | */ | |
693 | bool quiescing; | |
694 | ||
695 | /* device is started */ | |
696 | bool started; | |
697 | ||
698 | int tx_headroom; /* required headroom for hardware/radiotap */ | |
699 | ||
700 | /* Tasklet and skb queue to process calls from IRQ mode. All frames | |
701 | * added to skb_queue will be processed, but frames in | |
702 | * skb_queue_unreliable may be dropped if the total length of these | |
703 | * queues increases over the limit. */ | |
704 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 | |
705 | struct tasklet_struct tasklet; | |
706 | struct sk_buff_head skb_queue; | |
707 | struct sk_buff_head skb_queue_unreliable; | |
708 | ||
709 | /* Station data */ | |
710 | /* | |
711 | * The mutex only protects the list and counter, | |
712 | * reads are done in RCU. | |
713 | * Additionally, the lock protects the hash table, | |
714 | * the pending list and each BSS's TIM bitmap. | |
715 | */ | |
716 | struct mutex sta_mtx; | |
717 | spinlock_t sta_lock; | |
718 | unsigned long num_sta; | |
719 | struct list_head sta_list, sta_pending_list; | |
720 | struct sta_info *sta_hash[STA_HASH_SIZE]; | |
721 | struct timer_list sta_cleanup; | |
722 | struct work_struct sta_finish_work; | |
723 | int sta_generation; | |
724 | ||
725 | struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; | |
726 | struct tasklet_struct tx_pending_tasklet; | |
727 | ||
728 | /* | |
729 | * This lock is used to prevent concurrent A-MPDU | |
730 | * session start/stop processing, this thus also | |
731 | * synchronises the ->ampdu_action() callback to | |
732 | * drivers and limits it to one at a time. | |
733 | */ | |
734 | spinlock_t ampdu_lock; | |
735 | ||
736 | /* number of interfaces with corresponding IFF_ flags */ | |
737 | atomic_t iff_allmultis, iff_promiscs; | |
738 | ||
739 | struct rate_control_ref *rate_ctrl; | |
740 | ||
741 | struct crypto_blkcipher *wep_tx_tfm; | |
742 | struct crypto_blkcipher *wep_rx_tfm; | |
743 | u32 wep_iv; | |
744 | ||
745 | /* see iface.c */ | |
746 | struct list_head interfaces; | |
747 | struct mutex iflist_mtx; | |
748 | ||
749 | /* | |
750 | * Key lock, protects sdata's key_list and sta_info's | |
751 | * key pointers (write access, they're RCU.) | |
752 | */ | |
753 | spinlock_t key_lock; | |
754 | ||
755 | ||
756 | /* Scanning and BSS list */ | |
757 | struct mutex scan_mtx; | |
758 | unsigned long scanning; | |
759 | struct cfg80211_ssid scan_ssid; | |
760 | struct cfg80211_scan_request *int_scan_req; | |
761 | struct cfg80211_scan_request *scan_req, *hw_scan_req; | |
762 | struct ieee80211_channel *scan_channel; | |
763 | enum ieee80211_band hw_scan_band; | |
764 | int scan_channel_idx; | |
765 | int scan_ies_len; | |
766 | ||
767 | unsigned long leave_oper_channel_time; | |
768 | enum mac80211_scan_state next_scan_state; | |
769 | struct delayed_work scan_work; | |
770 | struct ieee80211_sub_if_data *scan_sdata; | |
771 | enum nl80211_channel_type oper_channel_type; | |
772 | struct ieee80211_channel *oper_channel, *csa_channel; | |
773 | ||
774 | /* Temporary remain-on-channel for off-channel operations */ | |
775 | struct ieee80211_channel *tmp_channel; | |
776 | enum nl80211_channel_type tmp_channel_type; | |
777 | ||
778 | /* SNMP counters */ | |
779 | /* dot11CountersTable */ | |
780 | u32 dot11TransmittedFragmentCount; | |
781 | u32 dot11MulticastTransmittedFrameCount; | |
782 | u32 dot11FailedCount; | |
783 | u32 dot11RetryCount; | |
784 | u32 dot11MultipleRetryCount; | |
785 | u32 dot11FrameDuplicateCount; | |
786 | u32 dot11ReceivedFragmentCount; | |
787 | u32 dot11MulticastReceivedFrameCount; | |
788 | u32 dot11TransmittedFrameCount; | |
789 | ||
790 | #ifdef CONFIG_MAC80211_LEDS | |
791 | int tx_led_counter, rx_led_counter; | |
792 | struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; | |
793 | char tx_led_name[32], rx_led_name[32], | |
794 | assoc_led_name[32], radio_led_name[32]; | |
795 | #endif | |
796 | ||
797 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
798 | /* TX/RX handler statistics */ | |
799 | unsigned int tx_handlers_drop; | |
800 | unsigned int tx_handlers_queued; | |
801 | unsigned int tx_handlers_drop_unencrypted; | |
802 | unsigned int tx_handlers_drop_fragment; | |
803 | unsigned int tx_handlers_drop_wep; | |
804 | unsigned int tx_handlers_drop_not_assoc; | |
805 | unsigned int tx_handlers_drop_unauth_port; | |
806 | unsigned int rx_handlers_drop; | |
807 | unsigned int rx_handlers_queued; | |
808 | unsigned int rx_handlers_drop_nullfunc; | |
809 | unsigned int rx_handlers_drop_defrag; | |
810 | unsigned int rx_handlers_drop_short; | |
811 | unsigned int rx_handlers_drop_passive_scan; | |
812 | unsigned int tx_expand_skb_head; | |
813 | unsigned int tx_expand_skb_head_cloned; | |
814 | unsigned int rx_expand_skb_head; | |
815 | unsigned int rx_expand_skb_head2; | |
816 | unsigned int rx_handlers_fragments; | |
817 | unsigned int tx_status_drop; | |
818 | #define I802_DEBUG_INC(c) (c)++ | |
819 | #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
820 | #define I802_DEBUG_INC(c) do { } while (0) | |
821 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
822 | ||
823 | ||
824 | int total_ps_buffered; /* total number of all buffered unicast and | |
825 | * multicast packets for power saving stations | |
826 | */ | |
827 | int wifi_wme_noack_test; | |
828 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ | |
829 | ||
830 | /* | |
831 | * Bitmask of enabled u-apsd queues, | |
832 | * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association | |
833 | * to take effect. | |
834 | */ | |
835 | unsigned int uapsd_queues; | |
836 | ||
837 | /* | |
838 | * Maximum number of buffered frames AP can deliver during a | |
839 | * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. | |
840 | * Needs a new association to take effect. | |
841 | */ | |
842 | unsigned int uapsd_max_sp_len; | |
843 | ||
844 | bool pspolling; | |
845 | bool offchannel_ps_enabled; | |
846 | /* | |
847 | * PS can only be enabled when we have exactly one managed | |
848 | * interface (and monitors) in PS, this then points there. | |
849 | */ | |
850 | struct ieee80211_sub_if_data *ps_sdata; | |
851 | struct work_struct dynamic_ps_enable_work; | |
852 | struct work_struct dynamic_ps_disable_work; | |
853 | struct timer_list dynamic_ps_timer; | |
854 | struct notifier_block network_latency_notifier; | |
855 | ||
856 | int user_power_level; /* in dBm */ | |
857 | int power_constr_level; /* in dBm */ | |
858 | ||
859 | enum ieee80211_smps_mode smps_mode; | |
860 | ||
861 | struct work_struct restart_work; | |
862 | ||
863 | #ifdef CONFIG_MAC80211_DEBUGFS | |
864 | struct local_debugfsdentries { | |
865 | struct dentry *rcdir; | |
866 | struct dentry *stations; | |
867 | struct dentry *keys; | |
868 | } debugfs; | |
869 | #endif | |
870 | }; | |
871 | ||
872 | static inline struct ieee80211_sub_if_data * | |
873 | IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) | |
874 | { | |
875 | return netdev_priv(dev); | |
876 | } | |
877 | ||
878 | /* this struct represents 802.11n's RA/TID combination along with our vif */ | |
879 | struct ieee80211_ra_tid { | |
880 | struct ieee80211_vif *vif; | |
881 | u8 ra[ETH_ALEN]; | |
882 | u16 tid; | |
883 | }; | |
884 | ||
885 | /* Parsed Information Elements */ | |
886 | struct ieee802_11_elems { | |
887 | u8 *ie_start; | |
888 | size_t total_len; | |
889 | ||
890 | /* pointers to IEs */ | |
891 | u8 *ssid; | |
892 | u8 *supp_rates; | |
893 | u8 *fh_params; | |
894 | u8 *ds_params; | |
895 | u8 *cf_params; | |
896 | struct ieee80211_tim_ie *tim; | |
897 | u8 *ibss_params; | |
898 | u8 *challenge; | |
899 | u8 *wpa; | |
900 | u8 *rsn; | |
901 | u8 *erp_info; | |
902 | u8 *ext_supp_rates; | |
903 | u8 *wmm_info; | |
904 | u8 *wmm_param; | |
905 | struct ieee80211_ht_cap *ht_cap_elem; | |
906 | struct ieee80211_ht_info *ht_info_elem; | |
907 | struct ieee80211_meshconf_ie *mesh_config; | |
908 | u8 *mesh_id; | |
909 | u8 *peer_link; | |
910 | u8 *preq; | |
911 | u8 *prep; | |
912 | u8 *perr; | |
913 | struct ieee80211_rann_ie *rann; | |
914 | u8 *ch_switch_elem; | |
915 | u8 *country_elem; | |
916 | u8 *pwr_constr_elem; | |
917 | u8 *quiet_elem; /* first quite element */ | |
918 | u8 *timeout_int; | |
919 | ||
920 | /* length of them, respectively */ | |
921 | u8 ssid_len; | |
922 | u8 supp_rates_len; | |
923 | u8 fh_params_len; | |
924 | u8 ds_params_len; | |
925 | u8 cf_params_len; | |
926 | u8 tim_len; | |
927 | u8 ibss_params_len; | |
928 | u8 challenge_len; | |
929 | u8 wpa_len; | |
930 | u8 rsn_len; | |
931 | u8 erp_info_len; | |
932 | u8 ext_supp_rates_len; | |
933 | u8 wmm_info_len; | |
934 | u8 wmm_param_len; | |
935 | u8 mesh_id_len; | |
936 | u8 peer_link_len; | |
937 | u8 preq_len; | |
938 | u8 prep_len; | |
939 | u8 perr_len; | |
940 | u8 ch_switch_elem_len; | |
941 | u8 country_elem_len; | |
942 | u8 pwr_constr_elem_len; | |
943 | u8 quiet_elem_len; | |
944 | u8 num_of_quiet_elem; /* can be more the one */ | |
945 | u8 timeout_int_len; | |
946 | }; | |
947 | ||
948 | static inline struct ieee80211_local *hw_to_local( | |
949 | struct ieee80211_hw *hw) | |
950 | { | |
951 | return container_of(hw, struct ieee80211_local, hw); | |
952 | } | |
953 | ||
954 | static inline struct ieee80211_hw *local_to_hw( | |
955 | struct ieee80211_local *local) | |
956 | { | |
957 | return &local->hw; | |
958 | } | |
959 | ||
960 | ||
961 | static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) | |
962 | { | |
963 | return compare_ether_addr(raddr, addr) == 0 || | |
964 | is_broadcast_ether_addr(raddr); | |
965 | } | |
966 | ||
967 | ||
968 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); | |
969 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); | |
970 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, | |
971 | u32 changed); | |
972 | void ieee80211_configure_filter(struct ieee80211_local *local); | |
973 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); | |
974 | ||
975 | extern bool ieee80211_disable_40mhz_24ghz; | |
976 | ||
977 | /* STA code */ | |
978 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
979 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
980 | struct cfg80211_auth_request *req); | |
981 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, | |
982 | struct cfg80211_assoc_request *req); | |
983 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, | |
984 | struct cfg80211_deauth_request *req, | |
985 | void *cookie); | |
986 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, | |
987 | struct cfg80211_disassoc_request *req, | |
988 | void *cookie); | |
989 | int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata, | |
990 | struct ieee80211_channel *chan, | |
991 | enum nl80211_channel_type channel_type, | |
992 | const u8 *buf, size_t len, u64 *cookie); | |
993 | ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, | |
994 | struct sk_buff *skb); | |
995 | void ieee80211_send_pspoll(struct ieee80211_local *local, | |
996 | struct ieee80211_sub_if_data *sdata); | |
997 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); | |
998 | int ieee80211_max_network_latency(struct notifier_block *nb, | |
999 | unsigned long data, void *dummy); | |
1000 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
1001 | struct ieee80211_channel_sw_ie *sw_elem, | |
1002 | struct ieee80211_bss *bss); | |
1003 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); | |
1004 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); | |
1005 | ||
1006 | /* IBSS code */ | |
1007 | void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); | |
1008 | void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); | |
1009 | ieee80211_rx_result | |
1010 | ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1011 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, | |
1012 | u8 *bssid, u8 *addr, u32 supp_rates, | |
1013 | gfp_t gfp); | |
1014 | int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, | |
1015 | struct cfg80211_ibss_params *params); | |
1016 | int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); | |
1017 | void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); | |
1018 | void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); | |
1019 | ||
1020 | /* scan/BSS handling */ | |
1021 | void ieee80211_scan_work(struct work_struct *work); | |
1022 | int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, | |
1023 | const u8 *ssid, u8 ssid_len, | |
1024 | struct ieee80211_channel *chan); | |
1025 | int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, | |
1026 | struct cfg80211_scan_request *req); | |
1027 | void ieee80211_scan_cancel(struct ieee80211_local *local); | |
1028 | ieee80211_rx_result | |
1029 | ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1030 | ||
1031 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); | |
1032 | struct ieee80211_bss * | |
1033 | ieee80211_bss_info_update(struct ieee80211_local *local, | |
1034 | struct ieee80211_rx_status *rx_status, | |
1035 | struct ieee80211_mgmt *mgmt, | |
1036 | size_t len, | |
1037 | struct ieee802_11_elems *elems, | |
1038 | struct ieee80211_channel *channel, | |
1039 | bool beacon); | |
1040 | struct ieee80211_bss * | |
1041 | ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, | |
1042 | u8 *ssid, u8 ssid_len); | |
1043 | void ieee80211_rx_bss_put(struct ieee80211_local *local, | |
1044 | struct ieee80211_bss *bss); | |
1045 | ||
1046 | /* off-channel helpers */ | |
1047 | void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local); | |
1048 | void ieee80211_offchannel_stop_station(struct ieee80211_local *local); | |
1049 | void ieee80211_offchannel_return(struct ieee80211_local *local, | |
1050 | bool enable_beaconing); | |
1051 | ||
1052 | /* interface handling */ | |
1053 | int ieee80211_iface_init(void); | |
1054 | void ieee80211_iface_exit(void); | |
1055 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, | |
1056 | struct net_device **new_dev, enum nl80211_iftype type, | |
1057 | struct vif_params *params); | |
1058 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, | |
1059 | enum nl80211_iftype type); | |
1060 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); | |
1061 | void ieee80211_remove_interfaces(struct ieee80211_local *local); | |
1062 | u32 __ieee80211_recalc_idle(struct ieee80211_local *local); | |
1063 | void ieee80211_recalc_idle(struct ieee80211_local *local); | |
1064 | ||
1065 | static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) | |
1066 | { | |
1067 | return netif_running(sdata->dev); | |
1068 | } | |
1069 | ||
1070 | /* tx handling */ | |
1071 | void ieee80211_clear_tx_pending(struct ieee80211_local *local); | |
1072 | void ieee80211_tx_pending(unsigned long data); | |
1073 | netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, | |
1074 | struct net_device *dev); | |
1075 | netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, | |
1076 | struct net_device *dev); | |
1077 | ||
1078 | /* | |
1079 | * radiotap header for status frames | |
1080 | */ | |
1081 | struct ieee80211_tx_status_rtap_hdr { | |
1082 | struct ieee80211_radiotap_header hdr; | |
1083 | u8 rate; | |
1084 | u8 padding_for_rate; | |
1085 | __le16 tx_flags; | |
1086 | u8 data_retries; | |
1087 | } __attribute__ ((packed)); | |
1088 | ||
1089 | ||
1090 | /* HT */ | |
1091 | void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, | |
1092 | struct ieee80211_ht_cap *ht_cap_ie, | |
1093 | struct ieee80211_sta_ht_cap *ht_cap); | |
1094 | void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); | |
1095 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, | |
1096 | const u8 *da, u16 tid, | |
1097 | u16 initiator, u16 reason_code); | |
1098 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, | |
1099 | enum ieee80211_smps_mode smps, const u8 *da, | |
1100 | const u8 *bssid); | |
1101 | ||
1102 | void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, | |
1103 | u16 initiator, u16 reason); | |
1104 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta); | |
1105 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, | |
1106 | struct sta_info *sta, | |
1107 | struct ieee80211_mgmt *mgmt, size_t len); | |
1108 | void ieee80211_process_addba_resp(struct ieee80211_local *local, | |
1109 | struct sta_info *sta, | |
1110 | struct ieee80211_mgmt *mgmt, | |
1111 | size_t len); | |
1112 | void ieee80211_process_addba_request(struct ieee80211_local *local, | |
1113 | struct sta_info *sta, | |
1114 | struct ieee80211_mgmt *mgmt, | |
1115 | size_t len); | |
1116 | ||
1117 | int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1118 | enum ieee80211_back_parties initiator); | |
1119 | int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, | |
1120 | enum ieee80211_back_parties initiator); | |
1121 | ||
1122 | /* Spectrum management */ | |
1123 | void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, | |
1124 | struct ieee80211_mgmt *mgmt, | |
1125 | size_t len); | |
1126 | ||
1127 | /* Suspend/resume and hw reconfiguration */ | |
1128 | int ieee80211_reconfig(struct ieee80211_local *local); | |
1129 | void ieee80211_stop_device(struct ieee80211_local *local); | |
1130 | ||
1131 | #ifdef CONFIG_PM | |
1132 | int __ieee80211_suspend(struct ieee80211_hw *hw); | |
1133 | ||
1134 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1135 | { | |
1136 | return ieee80211_reconfig(hw_to_local(hw)); | |
1137 | } | |
1138 | #else | |
1139 | static inline int __ieee80211_suspend(struct ieee80211_hw *hw) | |
1140 | { | |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | static inline int __ieee80211_resume(struct ieee80211_hw *hw) | |
1145 | { | |
1146 | return 0; | |
1147 | } | |
1148 | #endif | |
1149 | ||
1150 | /* utility functions/constants */ | |
1151 | extern void *mac80211_wiphy_privid; /* for wiphy privid */ | |
1152 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, | |
1153 | enum nl80211_iftype type); | |
1154 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
1155 | int rate, int erp, int short_preamble); | |
1156 | void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, | |
1157 | struct ieee80211_hdr *hdr, const u8 *tsc, | |
1158 | gfp_t gfp); | |
1159 | void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); | |
1160 | void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); | |
1161 | void ieee802_11_parse_elems(u8 *start, size_t len, | |
1162 | struct ieee802_11_elems *elems); | |
1163 | u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, | |
1164 | struct ieee802_11_elems *elems, | |
1165 | u64 filter, u32 crc); | |
1166 | u32 ieee80211_mandatory_rates(struct ieee80211_local *local, | |
1167 | enum ieee80211_band band); | |
1168 | ||
1169 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work); | |
1170 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work); | |
1171 | void ieee80211_dynamic_ps_timer(unsigned long data); | |
1172 | void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
1173 | struct ieee80211_sub_if_data *sdata, | |
1174 | int powersave); | |
1175 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, | |
1176 | struct ieee80211_hdr *hdr); | |
1177 | void ieee80211_beacon_connection_loss_work(struct work_struct *work); | |
1178 | ||
1179 | void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, | |
1180 | enum queue_stop_reason reason); | |
1181 | void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, | |
1182 | enum queue_stop_reason reason); | |
1183 | void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1184 | enum queue_stop_reason reason); | |
1185 | void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, | |
1186 | enum queue_stop_reason reason); | |
1187 | void ieee80211_add_pending_skb(struct ieee80211_local *local, | |
1188 | struct sk_buff *skb); | |
1189 | int ieee80211_add_pending_skbs(struct ieee80211_local *local, | |
1190 | struct sk_buff_head *skbs); | |
1191 | ||
1192 | void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
1193 | u16 transaction, u16 auth_alg, | |
1194 | u8 *extra, size_t extra_len, const u8 *bssid, | |
1195 | const u8 *key, u8 key_len, u8 key_idx); | |
1196 | int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, | |
1197 | const u8 *ie, size_t ie_len, | |
1198 | enum ieee80211_band band); | |
1199 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, | |
1200 | const u8 *ssid, size_t ssid_len, | |
1201 | const u8 *ie, size_t ie_len); | |
1202 | ||
1203 | void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, | |
1204 | const size_t supp_rates_len, | |
1205 | const u8 *supp_rates); | |
1206 | u32 ieee80211_sta_get_rates(struct ieee80211_local *local, | |
1207 | struct ieee802_11_elems *elems, | |
1208 | enum ieee80211_band band); | |
1209 | int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, | |
1210 | enum ieee80211_smps_mode smps_mode); | |
1211 | void ieee80211_recalc_smps(struct ieee80211_local *local, | |
1212 | struct ieee80211_sub_if_data *forsdata); | |
1213 | ||
1214 | size_t ieee80211_ie_split(const u8 *ies, size_t ielen, | |
1215 | const u8 *ids, int n_ids, size_t offset); | |
1216 | size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); | |
1217 | ||
1218 | /* internal work items */ | |
1219 | void ieee80211_work_init(struct ieee80211_local *local); | |
1220 | void ieee80211_add_work(struct ieee80211_work *wk); | |
1221 | void free_work(struct ieee80211_work *wk); | |
1222 | void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); | |
1223 | ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, | |
1224 | struct sk_buff *skb); | |
1225 | int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, | |
1226 | struct ieee80211_channel *chan, | |
1227 | enum nl80211_channel_type channel_type, | |
1228 | unsigned int duration, u64 *cookie); | |
1229 | int ieee80211_wk_cancel_remain_on_channel( | |
1230 | struct ieee80211_sub_if_data *sdata, u64 cookie); | |
1231 | ||
1232 | /* channel management */ | |
1233 | enum ieee80211_chan_mode { | |
1234 | CHAN_MODE_UNDEFINED, | |
1235 | CHAN_MODE_HOPPING, | |
1236 | CHAN_MODE_FIXED, | |
1237 | }; | |
1238 | ||
1239 | enum ieee80211_chan_mode | |
1240 | ieee80211_get_channel_mode(struct ieee80211_local *local, | |
1241 | struct ieee80211_sub_if_data *ignore); | |
1242 | ||
1243 | #ifdef CONFIG_MAC80211_NOINLINE | |
1244 | #define debug_noinline noinline | |
1245 | #else | |
1246 | #define debug_noinline | |
1247 | #endif | |
1248 | ||
1249 | #endif /* IEEE80211_I_H */ |