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