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 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #ifndef IEEE80211_I_H
14 #define IEEE80211_I_H
15
16 #include <linux/kernel.h>
17 #include <linux/device.h>
18 #include <linux/if_ether.h>
19 #include <linux/interrupt.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/workqueue.h>
24 #include <linux/types.h>
25 #include <linux/spinlock.h>
26 #include <linux/etherdevice.h>
27 #include <linux/leds.h>
28 #include <linux/idr.h>
29 #include <linux/rhashtable.h>
30 #include <net/ieee80211_radiotap.h>
31 #include <net/cfg80211.h>
32 #include <net/mac80211.h>
33 #include "key.h"
34 #include "sta_info.h"
35 #include "debug.h"
36
37 extern const struct cfg80211_ops mac80211_config_ops;
38
39 struct ieee80211_local;
40
41 /* Maximum number of broadcast/multicast frames to buffer when some of the
42 * associated stations are using power saving. */
43 #define AP_MAX_BC_BUFFER 128
44
45 /* Maximum number of frames buffered to all STAs, including multicast frames.
46 * Note: increasing this limit increases the potential memory requirement. Each
47 * frame can be up to about 2 kB long. */
48 #define TOTAL_MAX_TX_BUFFER 512
49
50 /* Required encryption head and tailroom */
51 #define IEEE80211_ENCRYPT_HEADROOM 8
52 #define IEEE80211_ENCRYPT_TAILROOM 18
53
54 /* power level hasn't been configured (or set to automatic) */
55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
56
57 /*
58 * Some APs experience problems when working with U-APSD. Decreasing the
59 * probability of that happening by using legacy mode for all ACs but VO isn't
60 * enough.
61 *
62 * Cisco 4410N originally forced us to enable VO by default only because it
63 * treated non-VO ACs as legacy.
64 *
65 * However some APs (notably Netgear R7000) silently reclassify packets to
66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
67 * clients would never see some frames (e.g. ARP responses) or would fetch them
68 * accidentally after a long time.
69 *
70 * It makes little sense to enable u-APSD queues by default because it needs
71 * userspace applications to be aware of it to actually take advantage of the
72 * possible additional powersavings. Implicitly depending on driver autotrigger
73 * frame support doesn't make much sense.
74 */
75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
76
77 #define IEEE80211_DEFAULT_MAX_SP_LEN \
78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
79
80 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
81
82 struct ieee80211_bss {
83 u32 device_ts_beacon, device_ts_presp;
84
85 bool wmm_used;
86 bool uapsd_supported;
87
88 #define IEEE80211_MAX_SUPP_RATES 32
89 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
90 size_t supp_rates_len;
91 struct ieee80211_rate *beacon_rate;
92
93 /*
94 * During association, we save an ERP value from a probe response so
95 * that we can feed ERP info to the driver when handling the
96 * association completes. these fields probably won't be up-to-date
97 * otherwise, you probably don't want to use them.
98 */
99 bool has_erp_value;
100 u8 erp_value;
101
102 /* Keep track of the corruption of the last beacon/probe response. */
103 u8 corrupt_data;
104
105 /* Keep track of what bits of information we have valid info for. */
106 u8 valid_data;
107 };
108
109 /**
110 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
111 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
112 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
113 *
114 * These are bss flags that are attached to a bss in the
115 * @corrupt_data field of &struct ieee80211_bss.
116 */
117 enum ieee80211_bss_corrupt_data_flags {
118 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
119 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
120 };
121
122 /**
123 * enum ieee80211_valid_data_flags - BSS valid data flags
124 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
125 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
126 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
127 *
128 * These are bss flags that are attached to a bss in the
129 * @valid_data field of &struct ieee80211_bss. They show which parts
130 * of the data structure were received as a result of an un-corrupted
131 * beacon/probe response.
132 */
133 enum ieee80211_bss_valid_data_flags {
134 IEEE80211_BSS_VALID_WMM = BIT(1),
135 IEEE80211_BSS_VALID_RATES = BIT(2),
136 IEEE80211_BSS_VALID_ERP = BIT(3)
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_UNICAST BIT(1)
145 #define IEEE80211_TX_PS_BUFFERED BIT(2)
146
147 struct ieee80211_tx_data {
148 struct sk_buff *skb;
149 struct sk_buff_head skbs;
150 struct ieee80211_local *local;
151 struct ieee80211_sub_if_data *sdata;
152 struct sta_info *sta;
153 struct ieee80211_key *key;
154 struct ieee80211_tx_rate rate;
155
156 unsigned int flags;
157 };
158
159
160 typedef unsigned __bitwise__ ieee80211_rx_result;
161 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
162 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
163 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
164 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
165
166 /**
167 * enum ieee80211_packet_rx_flags - packet RX flags
168 * @IEEE80211_RX_AMSDU: a-MSDU packet
169 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
170 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
171 *
172 * These are per-frame flags that are attached to a frame in the
173 * @rx_flags field of &struct ieee80211_rx_status.
174 */
175 enum ieee80211_packet_rx_flags {
176 IEEE80211_RX_AMSDU = BIT(3),
177 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
178 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
179 };
180
181 /**
182 * enum ieee80211_rx_flags - RX data flags
183 *
184 * @IEEE80211_RX_CMNTR: received on cooked monitor already
185 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
186 * to cfg80211_report_obss_beacon().
187 *
188 * These flags are used across handling multiple interfaces
189 * for a single frame.
190 */
191 enum ieee80211_rx_flags {
192 IEEE80211_RX_CMNTR = BIT(0),
193 IEEE80211_RX_BEACON_REPORTED = BIT(1),
194 };
195
196 struct ieee80211_rx_data {
197 struct napi_struct *napi;
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
206 /*
207 * Index into sequence numbers array, 0..16
208 * since the last (16) is used for non-QoS,
209 * will be 16 on non-QoS frames.
210 */
211 int seqno_idx;
212
213 /*
214 * Index into the security IV/PN arrays, 0..16
215 * since the last (16) is used for CCMP-encrypted
216 * management frames, will be set to 16 on mgmt
217 * frames and 0 on non-QoS frames.
218 */
219 int security_idx;
220
221 union {
222 struct {
223 u32 iv32;
224 u16 iv16;
225 } tkip;
226 struct {
227 u8 pn[IEEE80211_CCMP_PN_LEN];
228 } ccm_gcm;
229 };
230 };
231
232 struct ieee80211_csa_settings {
233 const u16 *counter_offsets_beacon;
234 const u16 *counter_offsets_presp;
235
236 int n_counter_offsets_beacon;
237 int n_counter_offsets_presp;
238
239 u8 count;
240 };
241
242 struct beacon_data {
243 u8 *head, *tail;
244 int head_len, tail_len;
245 struct ieee80211_meshconf_ie *meshconf;
246 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
247 u8 csa_current_counter;
248 struct rcu_head rcu_head;
249 };
250
251 struct probe_resp {
252 struct rcu_head rcu_head;
253 int len;
254 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
255 u8 data[0];
256 };
257
258 struct ps_data {
259 /* yes, this looks ugly, but guarantees that we can later use
260 * bitmap_empty :)
261 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
262 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
263 __aligned(__alignof__(unsigned long));
264 struct sk_buff_head bc_buf;
265 atomic_t num_sta_ps; /* number of stations in PS mode */
266 int dtim_count;
267 bool dtim_bc_mc;
268 };
269
270 struct ieee80211_if_ap {
271 struct beacon_data __rcu *beacon;
272 struct probe_resp __rcu *probe_resp;
273
274 /* to be used after channel switch. */
275 struct cfg80211_beacon_data *next_beacon;
276 struct list_head vlans; /* write-protected with RTNL and local->mtx */
277
278 struct ps_data ps;
279 atomic_t num_mcast_sta; /* number of stations receiving multicast */
280 enum ieee80211_smps_mode req_smps, /* requested smps mode */
281 driver_smps_mode; /* smps mode request */
282
283 struct work_struct request_smps_work;
284 };
285
286 struct ieee80211_if_wds {
287 struct sta_info *sta;
288 u8 remote_addr[ETH_ALEN];
289 };
290
291 struct ieee80211_if_vlan {
292 struct list_head list; /* write-protected with RTNL and local->mtx */
293
294 /* used for all tx if the VLAN is configured to 4-addr mode */
295 struct sta_info __rcu *sta;
296 };
297
298 struct mesh_stats {
299 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
300 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
301 __u32 fwded_frames; /* Mesh total forwarded frames */
302 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
303 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
304 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
305 };
306
307 #define PREQ_Q_F_START 0x1
308 #define PREQ_Q_F_REFRESH 0x2
309 struct mesh_preq_queue {
310 struct list_head list;
311 u8 dst[ETH_ALEN];
312 u8 flags;
313 };
314
315 struct ieee80211_roc_work {
316 struct list_head list;
317 struct list_head dependents;
318
319 struct delayed_work work;
320
321 struct ieee80211_sub_if_data *sdata;
322
323 struct ieee80211_channel *chan;
324
325 bool started, abort, hw_begun, notified;
326 bool to_be_freed;
327 bool on_channel;
328
329 unsigned long hw_start_time;
330
331 u32 duration, req_duration;
332 struct sk_buff *frame;
333 u64 cookie, mgmt_tx_cookie;
334 enum ieee80211_roc_type type;
335 };
336
337 /* flags used in struct ieee80211_if_managed.flags */
338 enum ieee80211_sta_flags {
339 IEEE80211_STA_CONNECTION_POLL = BIT(1),
340 IEEE80211_STA_CONTROL_PORT = BIT(2),
341 IEEE80211_STA_DISABLE_HT = BIT(4),
342 IEEE80211_STA_MFP_ENABLED = BIT(6),
343 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
344 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
345 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
346 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
347 IEEE80211_STA_DISABLE_VHT = BIT(11),
348 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
349 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
350 IEEE80211_STA_DISABLE_WMM = BIT(14),
351 IEEE80211_STA_ENABLE_RRM = BIT(15),
352 };
353
354 struct ieee80211_mgd_auth_data {
355 struct cfg80211_bss *bss;
356 unsigned long timeout;
357 int tries;
358 u16 algorithm, expected_transaction;
359
360 u8 key[WLAN_KEY_LEN_WEP104];
361 u8 key_len, key_idx;
362 bool done;
363 bool timeout_started;
364
365 u16 sae_trans, sae_status;
366 size_t data_len;
367 u8 data[];
368 };
369
370 struct ieee80211_mgd_assoc_data {
371 struct cfg80211_bss *bss;
372 const u8 *supp_rates;
373
374 unsigned long timeout;
375 int tries;
376
377 u16 capability;
378 u8 prev_bssid[ETH_ALEN];
379 u8 ssid[IEEE80211_MAX_SSID_LEN];
380 u8 ssid_len;
381 u8 supp_rates_len;
382 bool wmm, uapsd;
383 bool need_beacon;
384 bool synced;
385 bool timeout_started;
386
387 u8 ap_ht_param;
388
389 struct ieee80211_vht_cap ap_vht_cap;
390
391 size_t ie_len;
392 u8 ie[];
393 };
394
395 struct ieee80211_sta_tx_tspec {
396 /* timestamp of the first packet in the time slice */
397 unsigned long time_slice_start;
398
399 u32 admitted_time; /* in usecs, unlike over the air */
400 u8 tsid;
401 s8 up; /* signed to be able to invalidate with -1 during teardown */
402
403 /* consumed TX time in microseconds in the time slice */
404 u32 consumed_tx_time;
405 enum {
406 TX_TSPEC_ACTION_NONE = 0,
407 TX_TSPEC_ACTION_DOWNGRADE,
408 TX_TSPEC_ACTION_STOP_DOWNGRADE,
409 } action;
410 bool downgraded;
411 };
412
413 DECLARE_EWMA(beacon_signal, 16, 4)
414
415 struct ieee80211_if_managed {
416 struct timer_list timer;
417 struct timer_list conn_mon_timer;
418 struct timer_list bcn_mon_timer;
419 struct timer_list chswitch_timer;
420 struct work_struct monitor_work;
421 struct work_struct chswitch_work;
422 struct work_struct beacon_connection_loss_work;
423 struct work_struct csa_connection_drop_work;
424
425 unsigned long beacon_timeout;
426 unsigned long probe_timeout;
427 int probe_send_count;
428 bool nullfunc_failed;
429 bool connection_loss;
430
431 struct cfg80211_bss *associated;
432 struct ieee80211_mgd_auth_data *auth_data;
433 struct ieee80211_mgd_assoc_data *assoc_data;
434
435 u8 bssid[ETH_ALEN];
436
437 u16 aid;
438
439 bool powersave; /* powersave requested for this iface */
440 bool broken_ap; /* AP is broken -- turn off powersave */
441 bool have_beacon;
442 u8 dtim_period;
443 enum ieee80211_smps_mode req_smps, /* requested smps mode */
444 driver_smps_mode; /* smps mode request */
445
446 struct work_struct request_smps_work;
447
448 unsigned int flags;
449
450 bool csa_waiting_bcn;
451 bool csa_ignored_same_chan;
452
453 bool beacon_crc_valid;
454 u32 beacon_crc;
455
456 bool status_acked;
457 bool status_received;
458 __le16 status_fc;
459
460 enum {
461 IEEE80211_MFP_DISABLED,
462 IEEE80211_MFP_OPTIONAL,
463 IEEE80211_MFP_REQUIRED
464 } mfp; /* management frame protection */
465
466 /*
467 * Bitmask of enabled u-apsd queues,
468 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
469 * to take effect.
470 */
471 unsigned int uapsd_queues;
472
473 /*
474 * Maximum number of buffered frames AP can deliver during a
475 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
476 * Needs a new association to take effect.
477 */
478 unsigned int uapsd_max_sp_len;
479
480 int wmm_last_param_set;
481
482 u8 use_4addr;
483
484 s16 p2p_noa_index;
485
486 struct ewma_beacon_signal ave_beacon_signal;
487
488 /*
489 * Number of Beacon frames used in ave_beacon_signal. This can be used
490 * to avoid generating less reliable cqm events that would be based
491 * only on couple of received frames.
492 */
493 unsigned int count_beacon_signal;
494
495 /* Number of times beacon loss was invoked. */
496 unsigned int beacon_loss_count;
497
498 /*
499 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
500 * that triggered a cqm event. 0 indicates that no event has been
501 * generated for the current association.
502 */
503 int last_cqm_event_signal;
504
505 /*
506 * State variables for keeping track of RSSI of the AP currently
507 * connected to and informing driver when RSSI has gone
508 * below/above a certain threshold.
509 */
510 int rssi_min_thold, rssi_max_thold;
511 int last_ave_beacon_signal;
512
513 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
514 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
515 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
516 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
517
518 /* TDLS support */
519 u8 tdls_peer[ETH_ALEN] __aligned(2);
520 struct delayed_work tdls_peer_del_work;
521 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
522 struct sk_buff *teardown_skb; /* A copy to send through the AP */
523 spinlock_t teardown_lock; /* To lock changing teardown_skb */
524 bool tdls_chan_switch_prohibited;
525 bool tdls_wider_bw_prohibited;
526
527 /* WMM-AC TSPEC support */
528 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
529 /* Use a separate work struct so that we can do something here
530 * while the sdata->work is flushing the queues, for example.
531 * otherwise, in scenarios where we hardly get any traffic out
532 * on the BE queue, but there's a lot of VO traffic, we might
533 * get stuck in a downgraded situation and flush takes forever.
534 */
535 struct delayed_work tx_tspec_wk;
536 };
537
538 struct ieee80211_if_ibss {
539 struct timer_list timer;
540 struct work_struct csa_connection_drop_work;
541
542 unsigned long last_scan_completed;
543
544 u32 basic_rates;
545
546 bool fixed_bssid;
547 bool fixed_channel;
548 bool privacy;
549
550 bool control_port;
551 bool userspace_handles_dfs;
552
553 u8 bssid[ETH_ALEN] __aligned(2);
554 u8 ssid[IEEE80211_MAX_SSID_LEN];
555 u8 ssid_len, ie_len;
556 u8 *ie;
557 struct cfg80211_chan_def chandef;
558
559 unsigned long ibss_join_req;
560 /* probe response/beacon for IBSS */
561 struct beacon_data __rcu *presp;
562
563 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
564 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
565
566 spinlock_t incomplete_lock;
567 struct list_head incomplete_stations;
568
569 enum {
570 IEEE80211_IBSS_MLME_SEARCH,
571 IEEE80211_IBSS_MLME_JOINED,
572 } state;
573 };
574
575 /**
576 * struct ieee80211_if_ocb - OCB mode state
577 *
578 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
579 * @wrkq_flags: OCB deferred task action
580 * @incomplete_lock: delayed STA insertion lock
581 * @incomplete_stations: list of STAs waiting for delayed insertion
582 * @joined: indication if the interface is connected to an OCB network
583 */
584 struct ieee80211_if_ocb {
585 struct timer_list housekeeping_timer;
586 unsigned long wrkq_flags;
587
588 spinlock_t incomplete_lock;
589 struct list_head incomplete_stations;
590
591 bool joined;
592 };
593
594 /**
595 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
596 *
597 * these declarations define the interface, which enables
598 * vendor-specific mesh synchronization
599 *
600 */
601 struct ieee802_11_elems;
602 struct ieee80211_mesh_sync_ops {
603 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
604 u16 stype,
605 struct ieee80211_mgmt *mgmt,
606 struct ieee802_11_elems *elems,
607 struct ieee80211_rx_status *rx_status);
608
609 /* should be called with beacon_data under RCU read lock */
610 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
611 struct beacon_data *beacon);
612 /* add other framework functions here */
613 };
614
615 struct mesh_csa_settings {
616 struct rcu_head rcu_head;
617 struct cfg80211_csa_settings settings;
618 };
619
620 struct ieee80211_if_mesh {
621 struct timer_list housekeeping_timer;
622 struct timer_list mesh_path_timer;
623 struct timer_list mesh_path_root_timer;
624
625 unsigned long wrkq_flags;
626 unsigned long mbss_changed;
627
628 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
629 size_t mesh_id_len;
630 /* Active Path Selection Protocol Identifier */
631 u8 mesh_pp_id;
632 /* Active Path Selection Metric Identifier */
633 u8 mesh_pm_id;
634 /* Congestion Control Mode Identifier */
635 u8 mesh_cc_id;
636 /* Synchronization Protocol Identifier */
637 u8 mesh_sp_id;
638 /* Authentication Protocol Identifier */
639 u8 mesh_auth_id;
640 /* Local mesh Sequence Number */
641 u32 sn;
642 /* Last used PREQ ID */
643 u32 preq_id;
644 atomic_t mpaths;
645 /* Timestamp of last SN update */
646 unsigned long last_sn_update;
647 /* Time when it's ok to send next PERR */
648 unsigned long next_perr;
649 /* Timestamp of last PREQ sent */
650 unsigned long last_preq;
651 struct mesh_rmc *rmc;
652 spinlock_t mesh_preq_queue_lock;
653 struct mesh_preq_queue preq_queue;
654 int preq_queue_len;
655 struct mesh_stats mshstats;
656 struct mesh_config mshcfg;
657 atomic_t estab_plinks;
658 u32 mesh_seqnum;
659 bool accepting_plinks;
660 int num_gates;
661 struct beacon_data __rcu *beacon;
662 const u8 *ie;
663 u8 ie_len;
664 enum {
665 IEEE80211_MESH_SEC_NONE = 0x0,
666 IEEE80211_MESH_SEC_AUTHED = 0x1,
667 IEEE80211_MESH_SEC_SECURED = 0x2,
668 } security;
669 bool user_mpm;
670 /* Extensible Synchronization Framework */
671 const struct ieee80211_mesh_sync_ops *sync_ops;
672 s64 sync_offset_clockdrift_max;
673 spinlock_t sync_offset_lock;
674 /* mesh power save */
675 enum nl80211_mesh_power_mode nonpeer_pm;
676 int ps_peers_light_sleep;
677 int ps_peers_deep_sleep;
678 struct ps_data ps;
679 /* Channel Switching Support */
680 struct mesh_csa_settings __rcu *csa;
681 enum {
682 IEEE80211_MESH_CSA_ROLE_NONE,
683 IEEE80211_MESH_CSA_ROLE_INIT,
684 IEEE80211_MESH_CSA_ROLE_REPEATER,
685 } csa_role;
686 u8 chsw_ttl;
687 u16 pre_value;
688
689 /* offset from skb->data while building IE */
690 int meshconf_offset;
691 };
692
693 #ifdef CONFIG_MAC80211_MESH
694 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
695 do { (msh)->mshstats.name++; } while (0)
696 #else
697 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
698 do { } while (0)
699 #endif
700
701 /**
702 * enum ieee80211_sub_if_data_flags - virtual interface flags
703 *
704 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
705 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
706 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
707 * associated stations and deliver multicast frames both
708 * back to wireless media and to the local net stack.
709 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
710 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
711 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability
712 */
713 enum ieee80211_sub_if_data_flags {
714 IEEE80211_SDATA_ALLMULTI = BIT(0),
715 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
716 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
717 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
718 IEEE80211_SDATA_IN_DRIVER = BIT(5),
719 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6),
720 };
721
722 /**
723 * enum ieee80211_sdata_state_bits - virtual interface state bits
724 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
725 * mirrors netif_running() but is separate for interface type
726 * change handling while the interface is up
727 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
728 * mode, so queues are stopped
729 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
730 * to offchannel, reset when offchannel returns
731 */
732 enum ieee80211_sdata_state_bits {
733 SDATA_STATE_RUNNING,
734 SDATA_STATE_OFFCHANNEL,
735 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
736 };
737
738 /**
739 * enum ieee80211_chanctx_mode - channel context configuration mode
740 *
741 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
742 * multiple interfaces
743 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
744 * only by a single interface. This can be used for example for
745 * non-fixed channel IBSS.
746 */
747 enum ieee80211_chanctx_mode {
748 IEEE80211_CHANCTX_SHARED,
749 IEEE80211_CHANCTX_EXCLUSIVE
750 };
751
752 /**
753 * enum ieee80211_chanctx_replace_state - channel context replacement state
754 *
755 * This is used for channel context in-place reservations that require channel
756 * context switch/swap.
757 *
758 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
759 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
760 * by a (not yet registered) channel context pointed by %replace_ctx.
761 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
762 * replaces an existing channel context pointed to by %replace_ctx.
763 */
764 enum ieee80211_chanctx_replace_state {
765 IEEE80211_CHANCTX_REPLACE_NONE,
766 IEEE80211_CHANCTX_WILL_BE_REPLACED,
767 IEEE80211_CHANCTX_REPLACES_OTHER,
768 };
769
770 struct ieee80211_chanctx {
771 struct list_head list;
772 struct rcu_head rcu_head;
773
774 struct list_head assigned_vifs;
775 struct list_head reserved_vifs;
776
777 enum ieee80211_chanctx_replace_state replace_state;
778 struct ieee80211_chanctx *replace_ctx;
779
780 enum ieee80211_chanctx_mode mode;
781 bool driver_present;
782
783 struct ieee80211_chanctx_conf conf;
784 };
785
786 struct mac80211_qos_map {
787 struct cfg80211_qos_map qos_map;
788 struct rcu_head rcu_head;
789 };
790
791 enum txq_info_flags {
792 IEEE80211_TXQ_STOP,
793 IEEE80211_TXQ_AMPDU,
794 };
795
796 struct txq_info {
797 struct sk_buff_head queue;
798 unsigned long flags;
799
800 /* keep last! */
801 struct ieee80211_txq txq;
802 };
803
804 struct ieee80211_sub_if_data {
805 struct list_head list;
806
807 struct wireless_dev wdev;
808
809 /* keys */
810 struct list_head key_list;
811
812 /* count for keys needing tailroom space allocation */
813 int crypto_tx_tailroom_needed_cnt;
814 int crypto_tx_tailroom_pending_dec;
815 struct delayed_work dec_tailroom_needed_wk;
816
817 struct net_device *dev;
818 struct ieee80211_local *local;
819
820 unsigned int flags;
821
822 unsigned long state;
823
824 char name[IFNAMSIZ];
825
826 struct ieee80211_fragment_cache frags;
827
828 /* TID bitmap for NoAck policy */
829 u16 noack_map;
830
831 /* bit field of ACM bits (BIT(802.1D tag)) */
832 u8 wmm_acm;
833
834 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
835 struct ieee80211_key __rcu *default_unicast_key;
836 struct ieee80211_key __rcu *default_multicast_key;
837 struct ieee80211_key __rcu *default_mgmt_key;
838
839 u16 sequence_number;
840 __be16 control_port_protocol;
841 bool control_port_no_encrypt;
842 int encrypt_headroom;
843
844 atomic_t txqs_len[IEEE80211_NUM_ACS];
845 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
846 struct mac80211_qos_map __rcu *qos_map;
847
848 struct work_struct csa_finalize_work;
849 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
850 struct cfg80211_chan_def csa_chandef;
851
852 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
853 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
854
855 /* context reservation -- protected with chanctx_mtx */
856 struct ieee80211_chanctx *reserved_chanctx;
857 struct cfg80211_chan_def reserved_chandef;
858 bool reserved_radar_required;
859 bool reserved_ready;
860
861 /* used to reconfigure hardware SM PS */
862 struct work_struct recalc_smps;
863
864 struct work_struct work;
865 struct sk_buff_head skb_queue;
866
867 u8 needed_rx_chains;
868 enum ieee80211_smps_mode smps_mode;
869
870 int user_power_level; /* in dBm */
871 int ap_power_level; /* in dBm */
872
873 bool radar_required;
874 struct delayed_work dfs_cac_timer_work;
875
876 /*
877 * AP this belongs to: self in AP mode and
878 * corresponding AP in VLAN mode, NULL for
879 * all others (might be needed later in IBSS)
880 */
881 struct ieee80211_if_ap *bss;
882
883 /* bitmap of allowed (non-MCS) rate indexes for rate control */
884 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
885
886 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
887 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
888
889 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS];
890 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX];
891
892 union {
893 struct ieee80211_if_ap ap;
894 struct ieee80211_if_wds wds;
895 struct ieee80211_if_vlan vlan;
896 struct ieee80211_if_managed mgd;
897 struct ieee80211_if_ibss ibss;
898 struct ieee80211_if_mesh mesh;
899 struct ieee80211_if_ocb ocb;
900 u32 mntr_flags;
901 } u;
902
903 #ifdef CONFIG_MAC80211_DEBUGFS
904 struct {
905 struct dentry *subdir_stations;
906 struct dentry *default_unicast_key;
907 struct dentry *default_multicast_key;
908 struct dentry *default_mgmt_key;
909 } debugfs;
910 #endif
911
912 /* must be last, dynamically sized area in this! */
913 struct ieee80211_vif vif;
914 };
915
916 static inline
vif_to_sdata(struct ieee80211_vif * p)917 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
918 {
919 return container_of(p, struct ieee80211_sub_if_data, vif);
920 }
921
sdata_lock(struct ieee80211_sub_if_data * sdata)922 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
923 __acquires(&sdata->wdev.mtx)
924 {
925 mutex_lock(&sdata->wdev.mtx);
926 __acquire(&sdata->wdev.mtx);
927 }
928
sdata_unlock(struct ieee80211_sub_if_data * sdata)929 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
930 __releases(&sdata->wdev.mtx)
931 {
932 mutex_unlock(&sdata->wdev.mtx);
933 __release(&sdata->wdev.mtx);
934 }
935
936 #define sdata_dereference(p, sdata) \
937 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
938
939 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)940 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
941 {
942 lockdep_assert_held(&sdata->wdev.mtx);
943 }
944
945 static inline enum ieee80211_band
ieee80211_get_sdata_band(struct ieee80211_sub_if_data * sdata)946 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
947 {
948 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
949 struct ieee80211_chanctx_conf *chanctx_conf;
950
951 rcu_read_lock();
952 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
953 if (!WARN_ON(!chanctx_conf))
954 band = chanctx_conf->def.chan->band;
955 rcu_read_unlock();
956
957 return band;
958 }
959
960 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)961 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
962 {
963 switch (chandef->width) {
964 case NL80211_CHAN_WIDTH_5:
965 return 2;
966 case NL80211_CHAN_WIDTH_10:
967 return 1;
968 default:
969 return 0;
970 }
971 }
972
973 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)974 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
975 {
976 struct ieee80211_chanctx_conf *chanctx_conf;
977 int shift = 0;
978
979 rcu_read_lock();
980 chanctx_conf = rcu_dereference(vif->chanctx_conf);
981 if (chanctx_conf)
982 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
983 rcu_read_unlock();
984
985 return shift;
986 }
987
988 struct ieee80211_rx_agg {
989 u8 addr[ETH_ALEN];
990 u16 tid;
991 };
992
993 enum sdata_queue_type {
994 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
995 IEEE80211_SDATA_QUEUE_AGG_START = 1,
996 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
997 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
998 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
999 };
1000
1001 enum {
1002 IEEE80211_RX_MSG = 1,
1003 IEEE80211_TX_STATUS_MSG = 2,
1004 };
1005
1006 enum queue_stop_reason {
1007 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1008 IEEE80211_QUEUE_STOP_REASON_PS,
1009 IEEE80211_QUEUE_STOP_REASON_CSA,
1010 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1011 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1012 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1013 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1014 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1015 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1016 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1017 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1018
1019 IEEE80211_QUEUE_STOP_REASONS,
1020 };
1021
1022 #ifdef CONFIG_MAC80211_LEDS
1023 struct tpt_led_trigger {
1024 char name[32];
1025 const struct ieee80211_tpt_blink *blink_table;
1026 unsigned int blink_table_len;
1027 struct timer_list timer;
1028 unsigned long prev_traffic;
1029 unsigned long tx_bytes, rx_bytes;
1030 unsigned int active, want;
1031 bool running;
1032 };
1033 #endif
1034
1035 /**
1036 * mac80211 scan flags - currently active scan mode
1037 *
1038 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1039 * well be on the operating channel
1040 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1041 * determine if we are on the operating channel or not
1042 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1043 * channel. This should not interrupt normal traffic.
1044 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1045 * that the scan completed.
1046 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1047 * a scan complete for an aborted scan.
1048 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1049 * cancelled.
1050 */
1051 enum {
1052 SCAN_SW_SCANNING,
1053 SCAN_HW_SCANNING,
1054 SCAN_ONCHANNEL_SCANNING,
1055 SCAN_COMPLETED,
1056 SCAN_ABORTED,
1057 SCAN_HW_CANCELLED,
1058 };
1059
1060 /**
1061 * enum mac80211_scan_state - scan state machine states
1062 *
1063 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1064 * determines if we should keep on scanning or switch back to the
1065 * operating channel
1066 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1067 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1068 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1069 * send out data
1070 * @SCAN_RESUME: Resume the scan and scan the next channel
1071 * @SCAN_ABORT: Abort the scan and go back to operating channel
1072 */
1073 enum mac80211_scan_state {
1074 SCAN_DECISION,
1075 SCAN_SET_CHANNEL,
1076 SCAN_SEND_PROBE,
1077 SCAN_SUSPEND,
1078 SCAN_RESUME,
1079 SCAN_ABORT,
1080 };
1081
1082 struct ieee80211_local {
1083 /* embed the driver visible part.
1084 * don't cast (use the static inlines below), but we keep
1085 * it first anyway so they become a no-op */
1086 struct ieee80211_hw hw;
1087
1088 const struct ieee80211_ops *ops;
1089
1090 /*
1091 * private workqueue to mac80211. mac80211 makes this accessible
1092 * via ieee80211_queue_work()
1093 */
1094 struct workqueue_struct *workqueue;
1095
1096 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1097 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1098 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1099 spinlock_t queue_stop_reason_lock;
1100
1101 int open_count;
1102 int monitors, cooked_mntrs;
1103 /* number of interfaces with corresponding FIF_ flags */
1104 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1105 fif_probe_req;
1106 int probe_req_reg;
1107 unsigned int filter_flags; /* FIF_* */
1108
1109 bool wiphy_ciphers_allocated;
1110
1111 bool use_chanctx;
1112
1113 /* protects the aggregated multicast list and filter calls */
1114 spinlock_t filter_lock;
1115
1116 /* used for uploading changed mc list */
1117 struct work_struct reconfig_filter;
1118
1119 /* aggregated multicast list */
1120 struct netdev_hw_addr_list mc_list;
1121
1122 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1123
1124 /*
1125 * suspended is true if we finished all the suspend _and_ we have
1126 * not yet come up from resume. This is to be used by mac80211
1127 * to ensure driver sanity during suspend and mac80211's own
1128 * sanity. It can eventually be used for WoW as well.
1129 */
1130 bool suspended;
1131
1132 /*
1133 * Resuming is true while suspended, but when we're reprogramming the
1134 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1135 * again even though some other parts of the stack are still suspended
1136 * and we still drop received frames to avoid waking the stack.
1137 */
1138 bool resuming;
1139
1140 /*
1141 * quiescing is true during the suspend process _only_ to
1142 * ease timer cancelling etc.
1143 */
1144 bool quiescing;
1145
1146 /* device is started */
1147 bool started;
1148
1149 /* device is during a HW reconfig */
1150 bool in_reconfig;
1151
1152 /* wowlan is enabled -- don't reconfig on resume */
1153 bool wowlan;
1154
1155 struct work_struct radar_detected_work;
1156
1157 /* number of RX chains the hardware has */
1158 u8 rx_chains;
1159
1160 int tx_headroom; /* required headroom for hardware/radiotap */
1161
1162 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1163 * added to skb_queue will be processed, but frames in
1164 * skb_queue_unreliable may be dropped if the total length of these
1165 * queues increases over the limit. */
1166 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1167 struct tasklet_struct tasklet;
1168 struct sk_buff_head skb_queue;
1169 struct sk_buff_head skb_queue_unreliable;
1170
1171 spinlock_t rx_path_lock;
1172
1173 /* Station data */
1174 /*
1175 * The mutex only protects the list, hash table and
1176 * counter, reads are done with RCU.
1177 */
1178 struct mutex sta_mtx;
1179 spinlock_t tim_lock;
1180 unsigned long num_sta;
1181 struct list_head sta_list;
1182 struct rhashtable sta_hash;
1183 struct timer_list sta_cleanup;
1184 int sta_generation;
1185
1186 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1187 struct tasklet_struct tx_pending_tasklet;
1188
1189 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1190
1191 /* number of interfaces with allmulti RX */
1192 atomic_t iff_allmultis;
1193
1194 struct rate_control_ref *rate_ctrl;
1195
1196 struct crypto_cipher *wep_tx_tfm;
1197 struct crypto_cipher *wep_rx_tfm;
1198 u32 wep_iv;
1199
1200 /* see iface.c */
1201 struct list_head interfaces;
1202 struct mutex iflist_mtx;
1203
1204 /*
1205 * Key mutex, protects sdata's key_list and sta_info's
1206 * key pointers (write access, they're RCU.)
1207 */
1208 struct mutex key_mtx;
1209
1210 /* mutex for scan and work locking */
1211 struct mutex mtx;
1212
1213 /* Scanning and BSS list */
1214 unsigned long scanning;
1215 struct cfg80211_ssid scan_ssid;
1216 struct cfg80211_scan_request *int_scan_req;
1217 struct cfg80211_scan_request __rcu *scan_req;
1218 struct ieee80211_scan_request *hw_scan_req;
1219 struct cfg80211_chan_def scan_chandef;
1220 enum ieee80211_band hw_scan_band;
1221 int scan_channel_idx;
1222 int scan_ies_len;
1223 int hw_scan_ies_bufsize;
1224
1225 struct work_struct sched_scan_stopped_work;
1226 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1227 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1228 u8 scan_addr[ETH_ALEN];
1229
1230 unsigned long leave_oper_channel_time;
1231 enum mac80211_scan_state next_scan_state;
1232 struct delayed_work scan_work;
1233 struct ieee80211_sub_if_data __rcu *scan_sdata;
1234 /* For backward compatibility only -- do not use */
1235 struct cfg80211_chan_def _oper_chandef;
1236
1237 /* Temporary remain-on-channel for off-channel operations */
1238 struct ieee80211_channel *tmp_channel;
1239
1240 /* channel contexts */
1241 struct list_head chanctx_list;
1242 struct mutex chanctx_mtx;
1243
1244 #ifdef CONFIG_MAC80211_LEDS
1245 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1246 struct led_trigger tpt_led;
1247 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1248 atomic_t radio_led_active, tpt_led_active;
1249 struct tpt_led_trigger *tpt_led_trigger;
1250 #endif
1251
1252 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1253 /* SNMP counters */
1254 /* dot11CountersTable */
1255 u32 dot11TransmittedFragmentCount;
1256 u32 dot11MulticastTransmittedFrameCount;
1257 u32 dot11FailedCount;
1258 u32 dot11RetryCount;
1259 u32 dot11MultipleRetryCount;
1260 u32 dot11FrameDuplicateCount;
1261 u32 dot11ReceivedFragmentCount;
1262 u32 dot11MulticastReceivedFrameCount;
1263 u32 dot11TransmittedFrameCount;
1264
1265 /* TX/RX handler statistics */
1266 unsigned int tx_handlers_drop;
1267 unsigned int tx_handlers_queued;
1268 unsigned int tx_handlers_drop_wep;
1269 unsigned int tx_handlers_drop_not_assoc;
1270 unsigned int tx_handlers_drop_unauth_port;
1271 unsigned int rx_handlers_drop;
1272 unsigned int rx_handlers_queued;
1273 unsigned int rx_handlers_drop_nullfunc;
1274 unsigned int rx_handlers_drop_defrag;
1275 unsigned int tx_expand_skb_head;
1276 unsigned int tx_expand_skb_head_cloned;
1277 unsigned int rx_expand_skb_head_defrag;
1278 unsigned int rx_handlers_fragments;
1279 unsigned int tx_status_drop;
1280 #define I802_DEBUG_INC(c) (c)++
1281 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1282 #define I802_DEBUG_INC(c) do { } while (0)
1283 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1284
1285
1286 int total_ps_buffered; /* total number of all buffered unicast and
1287 * multicast packets for power saving stations
1288 */
1289
1290 bool pspolling;
1291 bool offchannel_ps_enabled;
1292 /*
1293 * PS can only be enabled when we have exactly one managed
1294 * interface (and monitors) in PS, this then points there.
1295 */
1296 struct ieee80211_sub_if_data *ps_sdata;
1297 struct work_struct dynamic_ps_enable_work;
1298 struct work_struct dynamic_ps_disable_work;
1299 struct timer_list dynamic_ps_timer;
1300 struct notifier_block ifa_notifier;
1301 struct notifier_block ifa6_notifier;
1302
1303 /*
1304 * The dynamic ps timeout configured from user space via WEXT -
1305 * this will override whatever chosen by mac80211 internally.
1306 */
1307 int dynamic_ps_forced_timeout;
1308
1309 int user_power_level; /* in dBm, for all interfaces */
1310
1311 enum ieee80211_smps_mode smps_mode;
1312
1313 struct work_struct restart_work;
1314
1315 #ifdef CONFIG_MAC80211_DEBUGFS
1316 struct local_debugfsdentries {
1317 struct dentry *rcdir;
1318 struct dentry *keys;
1319 } debugfs;
1320 #endif
1321
1322 /*
1323 * Remain-on-channel support
1324 */
1325 struct list_head roc_list;
1326 struct work_struct hw_roc_start, hw_roc_done;
1327 unsigned long hw_roc_start_time;
1328 u64 roc_cookie_counter;
1329
1330 struct idr ack_status_frames;
1331 spinlock_t ack_status_lock;
1332
1333 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1334
1335 /* virtual monitor interface */
1336 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1337 struct cfg80211_chan_def monitor_chandef;
1338
1339 /* extended capabilities provided by mac80211 */
1340 u8 ext_capa[8];
1341
1342 /* TDLS channel switch */
1343 struct work_struct tdls_chsw_work;
1344 struct sk_buff_head skb_queue_tdls_chsw;
1345 };
1346
1347 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1348 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1349 {
1350 return netdev_priv(dev);
1351 }
1352
1353 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1354 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1355 {
1356 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1357 }
1358
1359 /* this struct represents 802.11n's RA/TID combination */
1360 struct ieee80211_ra_tid {
1361 u8 ra[ETH_ALEN];
1362 u16 tid;
1363 };
1364
1365 /* this struct holds the value parsing from channel switch IE */
1366 struct ieee80211_csa_ie {
1367 struct cfg80211_chan_def chandef;
1368 u8 mode;
1369 u8 count;
1370 u8 ttl;
1371 u16 pre_value;
1372 };
1373
1374 /* Parsed Information Elements */
1375 struct ieee802_11_elems {
1376 const u8 *ie_start;
1377 size_t total_len;
1378
1379 /* pointers to IEs */
1380 const struct ieee80211_tdls_lnkie *lnk_id;
1381 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1382 const u8 *ext_capab;
1383 const u8 *ssid;
1384 const u8 *supp_rates;
1385 const u8 *ds_params;
1386 const struct ieee80211_tim_ie *tim;
1387 const u8 *challenge;
1388 const u8 *rsn;
1389 const u8 *erp_info;
1390 const u8 *ext_supp_rates;
1391 const u8 *wmm_info;
1392 const u8 *wmm_param;
1393 const struct ieee80211_ht_cap *ht_cap_elem;
1394 const struct ieee80211_ht_operation *ht_operation;
1395 const struct ieee80211_vht_cap *vht_cap_elem;
1396 const struct ieee80211_vht_operation *vht_operation;
1397 const struct ieee80211_meshconf_ie *mesh_config;
1398 const u8 *mesh_id;
1399 const u8 *peering;
1400 const __le16 *awake_window;
1401 const u8 *preq;
1402 const u8 *prep;
1403 const u8 *perr;
1404 const struct ieee80211_rann_ie *rann;
1405 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1406 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1407 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1408 const u8 *country_elem;
1409 const u8 *pwr_constr_elem;
1410 const u8 *cisco_dtpc_elem;
1411 const struct ieee80211_timeout_interval_ie *timeout_int;
1412 const u8 *opmode_notif;
1413 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1414 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1415
1416 /* length of them, respectively */
1417 u8 ext_capab_len;
1418 u8 ssid_len;
1419 u8 supp_rates_len;
1420 u8 tim_len;
1421 u8 challenge_len;
1422 u8 rsn_len;
1423 u8 ext_supp_rates_len;
1424 u8 wmm_info_len;
1425 u8 wmm_param_len;
1426 u8 mesh_id_len;
1427 u8 peering_len;
1428 u8 preq_len;
1429 u8 prep_len;
1430 u8 perr_len;
1431 u8 country_elem_len;
1432
1433 /* whether a parse error occurred while retrieving these elements */
1434 bool parse_error;
1435 };
1436
hw_to_local(struct ieee80211_hw * hw)1437 static inline struct ieee80211_local *hw_to_local(
1438 struct ieee80211_hw *hw)
1439 {
1440 return container_of(hw, struct ieee80211_local, hw);
1441 }
1442
to_txq_info(struct ieee80211_txq * txq)1443 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1444 {
1445 return container_of(txq, struct txq_info, txq);
1446 }
1447
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1448 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1449 {
1450 return ether_addr_equal(raddr, addr) ||
1451 is_broadcast_ether_addr(raddr);
1452 }
1453
1454 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1455 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1456 {
1457 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1458 status->flag & RX_FLAG_MACTIME_END);
1459 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1460 }
1461
1462 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1463 struct ieee80211_rx_status *status,
1464 unsigned int mpdu_len,
1465 unsigned int mpdu_offset);
1466 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1467 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1468 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1469 u32 changed);
1470 void ieee80211_configure_filter(struct ieee80211_local *local);
1471 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1472
1473 /* STA code */
1474 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1475 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1476 struct cfg80211_auth_request *req);
1477 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1478 struct cfg80211_assoc_request *req);
1479 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1480 struct cfg80211_deauth_request *req);
1481 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1482 struct cfg80211_disassoc_request *req);
1483 void ieee80211_send_pspoll(struct ieee80211_local *local,
1484 struct ieee80211_sub_if_data *sdata);
1485 void ieee80211_recalc_ps(struct ieee80211_local *local);
1486 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1487 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1488 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1489 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1490 struct sk_buff *skb);
1491 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1492 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1493 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1494 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1495 __le16 fc, bool acked);
1496 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1497 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1498 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1499
1500 /* IBSS code */
1501 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1502 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1503 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1504 const u8 *bssid, const u8 *addr, u32 supp_rates);
1505 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1506 struct cfg80211_ibss_params *params);
1507 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1508 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1509 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1510 struct sk_buff *skb);
1511 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1512 struct cfg80211_csa_settings *csa_settings);
1513 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1514 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1515
1516 /* OCB code */
1517 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1518 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1519 const u8 *bssid, const u8 *addr, u32 supp_rates);
1520 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1521 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1522 struct ocb_setup *setup);
1523 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1524
1525 /* mesh code */
1526 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1527 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1528 struct sk_buff *skb);
1529 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1530 struct cfg80211_csa_settings *csa_settings);
1531 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1532
1533 /* scan/BSS handling */
1534 void ieee80211_scan_work(struct work_struct *work);
1535 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1536 const u8 *ssid, u8 ssid_len,
1537 struct ieee80211_channel **channels,
1538 unsigned int n_channels,
1539 enum nl80211_bss_scan_width scan_width);
1540 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1541 struct cfg80211_scan_request *req);
1542 void ieee80211_scan_cancel(struct ieee80211_local *local);
1543 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1544 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1545
1546 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1547 struct ieee80211_bss *
1548 ieee80211_bss_info_update(struct ieee80211_local *local,
1549 struct ieee80211_rx_status *rx_status,
1550 struct ieee80211_mgmt *mgmt,
1551 size_t len,
1552 struct ieee802_11_elems *elems,
1553 struct ieee80211_channel *channel);
1554 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1555 struct ieee80211_bss *bss);
1556
1557 /* scheduled scan handling */
1558 int
1559 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1560 struct cfg80211_sched_scan_request *req);
1561 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1562 struct cfg80211_sched_scan_request *req);
1563 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1564 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1565 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1566
1567 /* off-channel helpers */
1568 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1569 void ieee80211_offchannel_return(struct ieee80211_local *local);
1570 void ieee80211_roc_setup(struct ieee80211_local *local);
1571 void ieee80211_start_next_roc(struct ieee80211_local *local);
1572 void ieee80211_roc_purge(struct ieee80211_local *local,
1573 struct ieee80211_sub_if_data *sdata);
1574 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1575 void ieee80211_sw_roc_work(struct work_struct *work);
1576 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1577
1578 /* channel switch handling */
1579 void ieee80211_csa_finalize_work(struct work_struct *work);
1580 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1581 struct cfg80211_csa_settings *params);
1582
1583 /* interface handling */
1584 int ieee80211_iface_init(void);
1585 void ieee80211_iface_exit(void);
1586 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1587 unsigned char name_assign_type,
1588 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1589 struct vif_params *params);
1590 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1591 enum nl80211_iftype type);
1592 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1593 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1594 u32 ieee80211_idle_off(struct ieee80211_local *local);
1595 void ieee80211_recalc_idle(struct ieee80211_local *local);
1596 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1597 const int offset);
1598 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1599 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1600 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1601 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1602
1603 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1604 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1605 bool update_bss);
1606
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1607 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1608 {
1609 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1610 }
1611
1612 /* tx handling */
1613 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1614 void ieee80211_tx_pending(unsigned long data);
1615 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1616 struct net_device *dev);
1617 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1618 struct net_device *dev);
1619 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1620 struct net_device *dev,
1621 u32 info_flags);
1622 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1623 struct sk_buff_head *skbs);
1624 struct sk_buff *
1625 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1626 struct sk_buff *skb, u32 info_flags);
1627 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1628 struct ieee80211_supported_band *sband,
1629 int retry_count, int shift, bool send_to_cooked);
1630
1631 void ieee80211_check_fast_xmit(struct sta_info *sta);
1632 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1633 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1634 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1635
1636 /* HT */
1637 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1638 struct ieee80211_sta_ht_cap *ht_cap);
1639 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1640 struct ieee80211_supported_band *sband,
1641 const struct ieee80211_ht_cap *ht_cap_ie,
1642 struct sta_info *sta);
1643 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1644 const u8 *da, u16 tid,
1645 u16 initiator, u16 reason_code);
1646 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1647 enum ieee80211_smps_mode smps, const u8 *da,
1648 const u8 *bssid);
1649 void ieee80211_request_smps_ap_work(struct work_struct *work);
1650 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1651 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1652 enum ieee80211_smps_mode smps_mode_new);
1653
1654 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1655 u16 initiator, u16 reason, bool stop);
1656 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1657 u16 initiator, u16 reason, bool stop);
1658 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1659 u8 dialog_token, u16 timeout,
1660 u16 start_seq_num, u16 ba_policy, u16 tid,
1661 u16 buf_size, bool tx, bool auto_seq);
1662 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1663 enum ieee80211_agg_stop_reason reason);
1664 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1665 struct sta_info *sta,
1666 struct ieee80211_mgmt *mgmt, size_t len);
1667 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1668 struct sta_info *sta,
1669 struct ieee80211_mgmt *mgmt,
1670 size_t len);
1671 void ieee80211_process_addba_request(struct ieee80211_local *local,
1672 struct sta_info *sta,
1673 struct ieee80211_mgmt *mgmt,
1674 size_t len);
1675
1676 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1677 enum ieee80211_agg_stop_reason reason);
1678 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1679 enum ieee80211_agg_stop_reason reason);
1680 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1681 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1682 void ieee80211_ba_session_work(struct work_struct *work);
1683 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1684 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1685
1686 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1687
1688 /* VHT */
1689 void
1690 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1691 struct ieee80211_supported_band *sband,
1692 const struct ieee80211_vht_cap *vht_cap_ie,
1693 struct sta_info *sta);
1694 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1695 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1696 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1697 enum ieee80211_sta_rx_bandwidth
1698 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1699 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1700 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1701 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1702 struct sta_info *sta, u8 opmode,
1703 enum ieee80211_band band);
1704 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1705 struct sta_info *sta, u8 opmode,
1706 enum ieee80211_band band);
1707 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1708 struct ieee80211_sta_vht_cap *vht_cap);
1709 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1710 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1711
1712 /* Spectrum management */
1713 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1714 struct ieee80211_mgmt *mgmt,
1715 size_t len);
1716 /**
1717 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1718 * @sdata: the sdata of the interface which has received the frame
1719 * @elems: parsed 802.11 elements received with the frame
1720 * @current_band: indicates the current band
1721 * @sta_flags: contains information about own capabilities and restrictions
1722 * to decide which channel switch announcements can be accepted. Only the
1723 * following subset of &enum ieee80211_sta_flags are evaluated:
1724 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1725 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1726 * %IEEE80211_STA_DISABLE_160MHZ.
1727 * @bssid: the currently connected bssid (for reporting)
1728 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1729 All of them will be filled with if success only.
1730 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1731 */
1732 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1733 struct ieee802_11_elems *elems,
1734 enum ieee80211_band current_band,
1735 u32 sta_flags, u8 *bssid,
1736 struct ieee80211_csa_ie *csa_ie);
1737
1738 /* Suspend/resume and hw reconfiguration */
1739 int ieee80211_reconfig(struct ieee80211_local *local);
1740 void ieee80211_stop_device(struct ieee80211_local *local);
1741
1742 int __ieee80211_suspend(struct ieee80211_hw *hw,
1743 struct cfg80211_wowlan *wowlan);
1744
__ieee80211_resume(struct ieee80211_hw * hw)1745 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1746 {
1747 struct ieee80211_local *local = hw_to_local(hw);
1748
1749 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1750 !test_bit(SCAN_COMPLETED, &local->scanning),
1751 "%s: resume with hardware scan still in progress\n",
1752 wiphy_name(hw->wiphy));
1753
1754 return ieee80211_reconfig(hw_to_local(hw));
1755 }
1756
1757 /* utility functions/constants */
1758 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1759 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1760 int rate, int erp, int short_preamble,
1761 int shift);
1762 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1763 bool bss_notify, bool enable_qos);
1764 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1765 struct sta_info *sta, struct sk_buff *skb);
1766
1767 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1768 struct sk_buff *skb, int tid,
1769 enum ieee80211_band band);
1770
1771 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum ieee80211_band band)1772 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1773 struct sk_buff *skb, int tid,
1774 enum ieee80211_band band)
1775 {
1776 rcu_read_lock();
1777 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1778 rcu_read_unlock();
1779 }
1780
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1781 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1782 struct sk_buff *skb, int tid)
1783 {
1784 struct ieee80211_chanctx_conf *chanctx_conf;
1785
1786 rcu_read_lock();
1787 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1788 if (WARN_ON(!chanctx_conf)) {
1789 rcu_read_unlock();
1790 kfree_skb(skb);
1791 return;
1792 }
1793
1794 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1795 chanctx_conf->def.chan->band);
1796 rcu_read_unlock();
1797 }
1798
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1799 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1800 struct sk_buff *skb)
1801 {
1802 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1803 ieee80211_tx_skb_tid(sdata, skb, 7);
1804 }
1805
1806 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1807 struct ieee802_11_elems *elems,
1808 u64 filter, u32 crc);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems)1809 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1810 bool action,
1811 struct ieee802_11_elems *elems)
1812 {
1813 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1814 }
1815
ieee80211_rx_reorder_ready(struct sk_buff_head * frames)1816 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1817 {
1818 struct sk_buff *tail = skb_peek_tail(frames);
1819 struct ieee80211_rx_status *status;
1820
1821 if (!tail)
1822 return false;
1823
1824 status = IEEE80211_SKB_RXCB(tail);
1825 if (status->flag & RX_FLAG_AMSDU_MORE)
1826 return false;
1827
1828 return true;
1829 }
1830
1831 extern const int ieee802_1d_to_ac[8];
1832
ieee80211_ac_from_tid(int tid)1833 static inline int ieee80211_ac_from_tid(int tid)
1834 {
1835 return ieee802_1d_to_ac[tid & 7];
1836 }
1837
1838 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1839 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1840 void ieee80211_dynamic_ps_timer(unsigned long data);
1841 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1842 struct ieee80211_sub_if_data *sdata,
1843 bool powersave);
1844 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1845 struct ieee80211_hdr *hdr);
1846 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1847 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1848
1849 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1850 unsigned long queues,
1851 enum queue_stop_reason reason,
1852 bool refcounted);
1853 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1854 struct ieee80211_sub_if_data *sdata,
1855 enum queue_stop_reason reason);
1856 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1857 struct ieee80211_sub_if_data *sdata,
1858 enum queue_stop_reason reason);
1859 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1860 unsigned long queues,
1861 enum queue_stop_reason reason,
1862 bool refcounted);
1863 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1864 enum queue_stop_reason reason,
1865 bool refcounted);
1866 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1867 enum queue_stop_reason reason,
1868 bool refcounted);
1869 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1870 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1871 struct sk_buff *skb);
1872 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1873 struct sk_buff_head *skbs);
1874 void ieee80211_flush_queues(struct ieee80211_local *local,
1875 struct ieee80211_sub_if_data *sdata, bool drop);
1876 void __ieee80211_flush_queues(struct ieee80211_local *local,
1877 struct ieee80211_sub_if_data *sdata,
1878 unsigned int queues, bool drop);
1879
ieee80211_can_run_worker(struct ieee80211_local * local)1880 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1881 {
1882 /*
1883 * If quiescing is set, we are racing with __ieee80211_suspend.
1884 * __ieee80211_suspend flushes the workers after setting quiescing,
1885 * and we check quiescing / suspended before enqueing new workers.
1886 * We should abort the worker to avoid the races below.
1887 */
1888 if (local->quiescing)
1889 return false;
1890
1891 /*
1892 * We might already be suspended if the following scenario occurs:
1893 * __ieee80211_suspend Control path
1894 *
1895 * if (local->quiescing)
1896 * return;
1897 * local->quiescing = true;
1898 * flush_workqueue();
1899 * queue_work(...);
1900 * local->suspended = true;
1901 * local->quiescing = false;
1902 * worker starts running...
1903 */
1904 if (local->suspended)
1905 return false;
1906
1907 return true;
1908 }
1909
1910 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
1911 struct sta_info *sta,
1912 struct txq_info *txq, int tid);
1913 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1914 u16 transaction, u16 auth_alg, u16 status,
1915 const u8 *extra, size_t extra_len, const u8 *bssid,
1916 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1917 u32 tx_flags);
1918 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1919 const u8 *bssid, u16 stype, u16 reason,
1920 bool send_frame, u8 *frame_buf);
1921 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1922 size_t buffer_len,
1923 struct ieee80211_scan_ies *ie_desc,
1924 const u8 *ie, size_t ie_len,
1925 u8 bands_used, u32 *rate_masks,
1926 struct cfg80211_chan_def *chandef);
1927 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1928 const u8 *src, const u8 *dst,
1929 u32 ratemask,
1930 struct ieee80211_channel *chan,
1931 const u8 *ssid, size_t ssid_len,
1932 const u8 *ie, size_t ie_len,
1933 bool directed);
1934 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1935 const u8 *src, const u8 *dst,
1936 const u8 *ssid, size_t ssid_len,
1937 const u8 *ie, size_t ie_len,
1938 u32 ratemask, bool directed, u32 tx_flags,
1939 struct ieee80211_channel *channel, bool scan);
1940
1941 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1942 struct ieee802_11_elems *elems,
1943 enum ieee80211_band band, u32 *basic_rates);
1944 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1945 enum ieee80211_smps_mode smps_mode);
1946 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1947 enum ieee80211_smps_mode smps_mode);
1948 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1949 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1950
1951 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1952 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1953 u16 cap);
1954 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1955 const struct cfg80211_chan_def *chandef,
1956 u16 prot_mode, bool rifs_mode);
1957 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1958 u32 cap);
1959 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1960 const struct cfg80211_chan_def *chandef);
1961 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1962 const struct ieee80211_supported_band *sband,
1963 const u8 *srates, int srates_len, u32 *rates);
1964 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1965 struct sk_buff *skb, bool need_basic,
1966 enum ieee80211_band band);
1967 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1968 struct sk_buff *skb, bool need_basic,
1969 enum ieee80211_band band);
1970 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1971
1972 /* channel management */
1973 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1974 const struct ieee80211_ht_operation *ht_oper,
1975 struct cfg80211_chan_def *chandef);
1976 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
1977 const struct ieee80211_vht_operation *oper,
1978 struct cfg80211_chan_def *chandef);
1979 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1980
1981 int __must_check
1982 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1983 const struct cfg80211_chan_def *chandef,
1984 enum ieee80211_chanctx_mode mode);
1985 int __must_check
1986 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1987 const struct cfg80211_chan_def *chandef,
1988 enum ieee80211_chanctx_mode mode,
1989 bool radar_required);
1990 int __must_check
1991 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1992 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1993
1994 int __must_check
1995 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1996 const struct cfg80211_chan_def *chandef,
1997 u32 *changed);
1998 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1999 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2000 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2001 bool clear);
2002 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2003 struct ieee80211_chanctx *ctx);
2004
2005 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2006 struct ieee80211_chanctx *chanctx);
2007 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2008 struct ieee80211_chanctx *ctx);
2009 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2010
2011 void ieee80211_dfs_cac_timer(unsigned long data);
2012 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2013 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2014 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2015 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2016 struct cfg80211_csa_settings *csa_settings);
2017
2018 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2019 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2020 const struct ieee80211_cipher_scheme *
2021 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2022 enum nl80211_iftype iftype);
2023 int ieee80211_cs_headroom(struct ieee80211_local *local,
2024 struct cfg80211_crypto_settings *crypto,
2025 enum nl80211_iftype iftype);
2026 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2027 struct ieee80211_sub_if_data *sdata);
2028 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2029 const struct cfg80211_chan_def *chandef,
2030 enum ieee80211_chanctx_mode chanmode,
2031 u8 radar_detect);
2032 int ieee80211_max_num_channels(struct ieee80211_local *local);
2033 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2034 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2035 struct ieee80211_chanctx *ctx);
2036
2037 /* TDLS */
2038 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2039 const u8 *peer, u8 action_code, u8 dialog_token,
2040 u16 status_code, u32 peer_capability,
2041 bool initiator, const u8 *extra_ies,
2042 size_t extra_ies_len);
2043 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2044 const u8 *peer, enum nl80211_tdls_operation oper);
2045 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2046 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2047 const u8 *addr, u8 oper_class,
2048 struct cfg80211_chan_def *chandef);
2049 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2050 struct net_device *dev,
2051 const u8 *addr);
2052 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2053 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2054 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2055 const u8 *peer, u16 reason);
2056 const char *ieee80211_get_reason_code_string(u16 reason_code);
2057
2058 extern const struct ethtool_ops ieee80211_ethtool_ops;
2059
2060 #ifdef CONFIG_MAC80211_NOINLINE
2061 #define debug_noinline noinline
2062 #else
2063 #define debug_noinline
2064 #endif
2065
2066 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2067 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2068
2069 #endif /* IEEE80211_I_H */
2070