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TOMOYO Linux Cross Reference
Linux/net/mac80211/ieee80211_i.h

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  1 /*
  2  * Copyright 2002-2005, Instant802 Networks, Inc.
  3  * Copyright 2005, Devicescape Software, Inc.
  4  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
  5  * Copyright 2007-2010  Johannes Berg <johannes@sipsolutions.net>
  6  *
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License version 2 as
  9  * published by the Free Software Foundation.
 10  */
 11 
 12 #ifndef IEEE80211_I_H
 13 #define IEEE80211_I_H
 14 
 15 #include <linux/kernel.h>
 16 #include <linux/device.h>
 17 #include <linux/if_ether.h>
 18 #include <linux/interrupt.h>
 19 #include <linux/list.h>
 20 #include <linux/netdevice.h>
 21 #include <linux/skbuff.h>
 22 #include <linux/workqueue.h>
 23 #include <linux/types.h>
 24 #include <linux/spinlock.h>
 25 #include <linux/etherdevice.h>
 26 #include <linux/leds.h>
 27 #include <linux/idr.h>
 28 #include <net/ieee80211_radiotap.h>
 29 #include <net/cfg80211.h>
 30 #include <net/mac80211.h>
 31 #include "key.h"
 32 #include "sta_info.h"
 33 #include "debug.h"
 34 
 35 struct ieee80211_local;
 36 
 37 /* Maximum number of broadcast/multicast frames to buffer when some of the
 38  * associated stations are using power saving. */
 39 #define AP_MAX_BC_BUFFER 128
 40 
 41 /* Maximum number of frames buffered to all STAs, including multicast frames.
 42  * Note: increasing this limit increases the potential memory requirement. Each
 43  * frame can be up to about 2 kB long. */
 44 #define TOTAL_MAX_TX_BUFFER 512
 45 
 46 /* Required encryption head and tailroom */
 47 #define IEEE80211_ENCRYPT_HEADROOM 8
 48 #define IEEE80211_ENCRYPT_TAILROOM 18
 49 
 50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
 51  * reception of at least three fragmented frames. This limit can be increased
 52  * by changing this define, at the cost of slower frame reassembly and
 53  * increased memory use (about 2 kB of RAM per entry). */
 54 #define IEEE80211_FRAGMENT_MAX 4
 55 
 56 #define TU_TO_JIFFIES(x)        (usecs_to_jiffies((x) * 1024))
 57 #define TU_TO_EXP_TIME(x)       (jiffies + TU_TO_JIFFIES(x))
 58 
 59 /* power level hasn't been configured (or set to automatic) */
 60 #define IEEE80211_UNSET_POWER_LEVEL     INT_MIN
 61 
 62 /*
 63  * Some APs experience problems when working with U-APSD. Decreasing the
 64  * probability of that happening by using legacy mode for all ACs but VO isn't
 65  * enough.
 66  *
 67  * Cisco 4410N originally forced us to enable VO by default only because it
 68  * treated non-VO ACs as legacy.
 69  *
 70  * However some APs (notably Netgear R7000) silently reclassify packets to
 71  * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
 72  * clients would never see some frames (e.g. ARP responses) or would fetch them
 73  * accidentally after a long time.
 74  *
 75  * It makes little sense to enable u-APSD queues by default because it needs
 76  * userspace applications to be aware of it to actually take advantage of the
 77  * possible additional powersavings. Implicitly depending on driver autotrigger
 78  * frame support doesn't make much sense.
 79  */
 80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
 81 
 82 #define IEEE80211_DEFAULT_MAX_SP_LEN            \
 83         IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
 84 
 85 #define IEEE80211_DEAUTH_FRAME_LEN      (24 /* hdr */ + 2 /* reason */)
 86 
 87 struct ieee80211_fragment_entry {
 88         unsigned long first_frag_time;
 89         unsigned int seq;
 90         unsigned int rx_queue;
 91         unsigned int last_frag;
 92         unsigned int extra_len;
 93         struct sk_buff_head skb_list;
 94         int ccmp; /* Whether fragments were encrypted with CCMP */
 95         u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
 96 };
 97 
 98 
 99 struct ieee80211_bss {
100         u32 device_ts_beacon, device_ts_presp;
101 
102         bool wmm_used;
103         bool uapsd_supported;
104 
105 #define IEEE80211_MAX_SUPP_RATES 32
106         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
107         size_t supp_rates_len;
108 
109         /*
110          * During association, we save an ERP value from a probe response so
111          * that we can feed ERP info to the driver when handling the
112          * association completes. these fields probably won't be up-to-date
113          * otherwise, you probably don't want to use them.
114          */
115         bool has_erp_value;
116         u8 erp_value;
117 
118         /* Keep track of the corruption of the last beacon/probe response. */
119         u8 corrupt_data;
120 
121         /* Keep track of what bits of information we have valid info for. */
122         u8 valid_data;
123 };
124 
125 /**
126  * enum ieee80211_corrupt_data_flags - BSS data corruption flags
127  * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
128  * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
129  *
130  * These are bss flags that are attached to a bss in the
131  * @corrupt_data field of &struct ieee80211_bss.
132  */
133 enum ieee80211_bss_corrupt_data_flags {
134         IEEE80211_BSS_CORRUPT_BEACON            = BIT(0),
135         IEEE80211_BSS_CORRUPT_PROBE_RESP        = BIT(1)
136 };
137 
138 /**
139  * enum ieee80211_valid_data_flags - BSS valid data flags
140  * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
141  * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
142  * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
143  *
144  * These are bss flags that are attached to a bss in the
145  * @valid_data field of &struct ieee80211_bss.  They show which parts
146  * of the data structure were recieved as a result of an un-corrupted
147  * beacon/probe response.
148  */
149 enum ieee80211_bss_valid_data_flags {
150         IEEE80211_BSS_VALID_WMM                 = BIT(1),
151         IEEE80211_BSS_VALID_RATES               = BIT(2),
152         IEEE80211_BSS_VALID_ERP                 = BIT(3)
153 };
154 
155 typedef unsigned __bitwise__ ieee80211_tx_result;
156 #define TX_CONTINUE     ((__force ieee80211_tx_result) 0u)
157 #define TX_DROP         ((__force ieee80211_tx_result) 1u)
158 #define TX_QUEUED       ((__force ieee80211_tx_result) 2u)
159 
160 #define IEEE80211_TX_UNICAST            BIT(1)
161 #define IEEE80211_TX_PS_BUFFERED        BIT(2)
162 
163 struct ieee80211_tx_data {
164         struct sk_buff *skb;
165         struct sk_buff_head skbs;
166         struct ieee80211_local *local;
167         struct ieee80211_sub_if_data *sdata;
168         struct sta_info *sta;
169         struct ieee80211_key *key;
170         struct ieee80211_tx_rate rate;
171 
172         unsigned int flags;
173 };
174 
175 
176 typedef unsigned __bitwise__ ieee80211_rx_result;
177 #define RX_CONTINUE             ((__force ieee80211_rx_result) 0u)
178 #define RX_DROP_UNUSABLE        ((__force ieee80211_rx_result) 1u)
179 #define RX_DROP_MONITOR         ((__force ieee80211_rx_result) 2u)
180 #define RX_QUEUED               ((__force ieee80211_rx_result) 3u)
181 
182 /**
183  * enum ieee80211_packet_rx_flags - packet RX flags
184  * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
185  *      (incl. multicast frames)
186  * @IEEE80211_RX_FRAGMENTED: fragmented frame
187  * @IEEE80211_RX_AMSDU: a-MSDU packet
188  * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
189  * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
190  *
191  * These are per-frame flags that are attached to a frame in the
192  * @rx_flags field of &struct ieee80211_rx_status.
193  */
194 enum ieee80211_packet_rx_flags {
195         IEEE80211_RX_RA_MATCH                   = BIT(1),
196         IEEE80211_RX_FRAGMENTED                 = BIT(2),
197         IEEE80211_RX_AMSDU                      = BIT(3),
198         IEEE80211_RX_MALFORMED_ACTION_FRM       = BIT(4),
199         IEEE80211_RX_DEFERRED_RELEASE           = BIT(5),
200 };
201 
202 /**
203  * enum ieee80211_rx_flags - RX data flags
204  *
205  * @IEEE80211_RX_CMNTR: received on cooked monitor already
206  * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
207  *      to cfg80211_report_obss_beacon().
208  *
209  * These flags are used across handling multiple interfaces
210  * for a single frame.
211  */
212 enum ieee80211_rx_flags {
213         IEEE80211_RX_CMNTR              = BIT(0),
214         IEEE80211_RX_BEACON_REPORTED    = BIT(1),
215 };
216 
217 struct ieee80211_rx_data {
218         struct sk_buff *skb;
219         struct ieee80211_local *local;
220         struct ieee80211_sub_if_data *sdata;
221         struct sta_info *sta;
222         struct ieee80211_key *key;
223 
224         unsigned int flags;
225 
226         /*
227          * Index into sequence numbers array, 0..16
228          * since the last (16) is used for non-QoS,
229          * will be 16 on non-QoS frames.
230          */
231         int seqno_idx;
232 
233         /*
234          * Index into the security IV/PN arrays, 0..16
235          * since the last (16) is used for CCMP-encrypted
236          * management frames, will be set to 16 on mgmt
237          * frames and 0 on non-QoS frames.
238          */
239         int security_idx;
240 
241         u32 tkip_iv32;
242         u16 tkip_iv16;
243 };
244 
245 struct beacon_data {
246         u8 *head, *tail;
247         int head_len, tail_len;
248         struct rcu_head rcu_head;
249 };
250 
251 struct probe_resp {
252         struct rcu_head rcu_head;
253         int len;
254         u8 data[0];
255 };
256 
257 struct ps_data {
258         /* yes, this looks ugly, but guarantees that we can later use
259          * bitmap_empty :)
260          * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
261         u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
262         struct sk_buff_head bc_buf;
263         atomic_t num_sta_ps; /* number of stations in PS mode */
264         int dtim_count;
265         bool dtim_bc_mc;
266 };
267 
268 struct ieee80211_if_ap {
269         struct beacon_data __rcu *beacon;
270         struct probe_resp __rcu *probe_resp;
271 
272         struct list_head vlans;
273 
274         struct ps_data ps;
275         atomic_t num_mcast_sta; /* number of stations receiving multicast */
276 };
277 
278 struct ieee80211_if_wds {
279         struct sta_info *sta;
280         u8 remote_addr[ETH_ALEN];
281 };
282 
283 struct ieee80211_if_vlan {
284         struct list_head list;
285 
286         /* used for all tx if the VLAN is configured to 4-addr mode */
287         struct sta_info __rcu *sta;
288 };
289 
290 struct mesh_stats {
291         __u32 fwded_mcast;              /* Mesh forwarded multicast frames */
292         __u32 fwded_unicast;            /* Mesh forwarded unicast frames */
293         __u32 fwded_frames;             /* Mesh total forwarded frames */
294         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
295         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
296         __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
297 };
298 
299 #define PREQ_Q_F_START          0x1
300 #define PREQ_Q_F_REFRESH        0x2
301 struct mesh_preq_queue {
302         struct list_head list;
303         u8 dst[ETH_ALEN];
304         u8 flags;
305 };
306 
307 #if HZ/100 == 0
308 #define IEEE80211_ROC_MIN_LEFT  1
309 #else
310 #define IEEE80211_ROC_MIN_LEFT  (HZ/100)
311 #endif
312 
313 struct ieee80211_roc_work {
314         struct list_head list;
315         struct list_head dependents;
316 
317         struct delayed_work work;
318 
319         struct ieee80211_sub_if_data *sdata;
320 
321         struct ieee80211_channel *chan;
322 
323         bool started, abort, hw_begun, notified;
324         bool to_be_freed;
325         bool on_channel;
326 
327         unsigned long hw_start_time;
328 
329         u32 duration, req_duration;
330         struct sk_buff *frame;
331         u64 cookie, mgmt_tx_cookie;
332         enum ieee80211_roc_type type;
333 };
334 
335 /* flags used in struct ieee80211_if_managed.flags */
336 enum ieee80211_sta_flags {
337         IEEE80211_STA_BEACON_POLL       = BIT(0),
338         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
339         IEEE80211_STA_CONTROL_PORT      = BIT(2),
340         IEEE80211_STA_DISABLE_HT        = BIT(4),
341         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
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 };
351 
352 struct ieee80211_mgd_auth_data {
353         struct cfg80211_bss *bss;
354         unsigned long timeout;
355         int tries;
356         u16 algorithm, expected_transaction;
357 
358         u8 key[WLAN_KEY_LEN_WEP104];
359         u8 key_len, key_idx;
360         bool done;
361         bool timeout_started;
362 
363         u16 sae_trans, sae_status;
364         size_t data_len;
365         u8 data[];
366 };
367 
368 struct ieee80211_mgd_assoc_data {
369         struct cfg80211_bss *bss;
370         const u8 *supp_rates;
371 
372         unsigned long timeout;
373         int tries;
374 
375         u16 capability;
376         u8 prev_bssid[ETH_ALEN];
377         u8 ssid[IEEE80211_MAX_SSID_LEN];
378         u8 ssid_len;
379         u8 supp_rates_len;
380         bool wmm, uapsd;
381         bool have_beacon, need_beacon;
382         bool synced;
383         bool timeout_started;
384 
385         u8 ap_ht_param;
386 
387         struct ieee80211_vht_cap ap_vht_cap;
388 
389         size_t ie_len;
390         u8 ie[];
391 };
392 
393 struct ieee80211_if_managed {
394         struct timer_list timer;
395         struct timer_list conn_mon_timer;
396         struct timer_list bcn_mon_timer;
397         struct timer_list chswitch_timer;
398         struct work_struct monitor_work;
399         struct work_struct chswitch_work;
400         struct work_struct beacon_connection_loss_work;
401         struct work_struct csa_connection_drop_work;
402 
403         unsigned long beacon_timeout;
404         unsigned long probe_timeout;
405         int probe_send_count;
406         bool nullfunc_failed;
407         bool connection_loss;
408 
409         struct mutex mtx;
410         struct cfg80211_bss *associated;
411         struct ieee80211_mgd_auth_data *auth_data;
412         struct ieee80211_mgd_assoc_data *assoc_data;
413 
414         u8 bssid[ETH_ALEN];
415 
416         u16 aid;
417 
418         bool powersave; /* powersave requested for this iface */
419         bool broken_ap; /* AP is broken -- turn off powersave */
420         u8 dtim_period;
421         enum ieee80211_smps_mode req_smps, /* requested smps mode */
422                                  driver_smps_mode; /* smps mode request */
423 
424         struct work_struct request_smps_work;
425 
426         unsigned int flags;
427 
428         bool beacon_crc_valid;
429         u32 beacon_crc;
430 
431         bool status_acked;
432         bool status_received;
433         __le16 status_fc;
434 
435         enum {
436                 IEEE80211_MFP_DISABLED,
437                 IEEE80211_MFP_OPTIONAL,
438                 IEEE80211_MFP_REQUIRED
439         } mfp; /* management frame protection */
440 
441         /*
442          * Bitmask of enabled u-apsd queues,
443          * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
444          * to take effect.
445          */
446         unsigned int uapsd_queues;
447 
448         /*
449          * Maximum number of buffered frames AP can deliver during a
450          * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
451          * Needs a new association to take effect.
452          */
453         unsigned int uapsd_max_sp_len;
454 
455         int wmm_last_param_set;
456 
457         u8 use_4addr;
458 
459         s16 p2p_noa_index;
460 
461         /* Signal strength from the last Beacon frame in the current BSS. */
462         int last_beacon_signal;
463 
464         /*
465          * Weighted average of the signal strength from Beacon frames in the
466          * current BSS. This is in units of 1/16 of the signal unit to maintain
467          * accuracy and to speed up calculations, i.e., the value need to be
468          * divided by 16 to get the actual value.
469          */
470         int ave_beacon_signal;
471 
472         /*
473          * Number of Beacon frames used in ave_beacon_signal. This can be used
474          * to avoid generating less reliable cqm events that would be based
475          * only on couple of received frames.
476          */
477         unsigned int count_beacon_signal;
478 
479         /*
480          * Last Beacon frame signal strength average (ave_beacon_signal / 16)
481          * that triggered a cqm event. 0 indicates that no event has been
482          * generated for the current association.
483          */
484         int last_cqm_event_signal;
485 
486         /*
487          * State variables for keeping track of RSSI of the AP currently
488          * connected to and informing driver when RSSI has gone
489          * below/above a certain threshold.
490          */
491         int rssi_min_thold, rssi_max_thold;
492         int last_ave_beacon_signal;
493 
494         struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
495         struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
496         struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
497         struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
498 };
499 
500 struct ieee80211_if_ibss {
501         struct timer_list timer;
502 
503         struct mutex mtx;
504 
505         unsigned long last_scan_completed;
506 
507         u32 basic_rates;
508 
509         bool fixed_bssid;
510         bool fixed_channel;
511         bool privacy;
512 
513         bool control_port;
514         unsigned int auth_frame_registrations;
515 
516         u8 bssid[ETH_ALEN] __aligned(2);
517         u8 ssid[IEEE80211_MAX_SSID_LEN];
518         u8 ssid_len, ie_len;
519         u8 *ie;
520         struct ieee80211_channel *channel;
521         enum nl80211_channel_type channel_type;
522 
523         unsigned long ibss_join_req;
524         /* probe response/beacon for IBSS */
525         struct beacon_data __rcu *presp;
526 
527         spinlock_t incomplete_lock;
528         struct list_head incomplete_stations;
529 
530         enum {
531                 IEEE80211_IBSS_MLME_SEARCH,
532                 IEEE80211_IBSS_MLME_JOINED,
533         } state;
534 };
535 
536 /**
537  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
538  *
539  * these declarations define the interface, which enables
540  * vendor-specific mesh synchronization
541  *
542  */
543 struct ieee802_11_elems;
544 struct ieee80211_mesh_sync_ops {
545         void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
546                              u16 stype,
547                              struct ieee80211_mgmt *mgmt,
548                              struct ieee802_11_elems *elems,
549                              struct ieee80211_rx_status *rx_status);
550         void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
551         /* add other framework functions here */
552 };
553 
554 struct ieee80211_if_mesh {
555         struct timer_list housekeeping_timer;
556         struct timer_list mesh_path_timer;
557         struct timer_list mesh_path_root_timer;
558 
559         unsigned long wrkq_flags;
560 
561         u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
562         size_t mesh_id_len;
563         /* Active Path Selection Protocol Identifier */
564         u8 mesh_pp_id;
565         /* Active Path Selection Metric Identifier */
566         u8 mesh_pm_id;
567         /* Congestion Control Mode Identifier */
568         u8 mesh_cc_id;
569         /* Synchronization Protocol Identifier */
570         u8 mesh_sp_id;
571         /* Authentication Protocol Identifier */
572         u8 mesh_auth_id;
573         /* Local mesh Sequence Number */
574         u32 sn;
575         /* Last used PREQ ID */
576         u32 preq_id;
577         atomic_t mpaths;
578         /* Timestamp of last SN update */
579         unsigned long last_sn_update;
580         /* Time when it's ok to send next PERR */
581         unsigned long next_perr;
582         /* Timestamp of last PREQ sent */
583         unsigned long last_preq;
584         struct mesh_rmc *rmc;
585         spinlock_t mesh_preq_queue_lock;
586         struct mesh_preq_queue preq_queue;
587         int preq_queue_len;
588         struct mesh_stats mshstats;
589         struct mesh_config mshcfg;
590         atomic_t estab_plinks;
591         u32 mesh_seqnum;
592         bool accepting_plinks;
593         int num_gates;
594         struct beacon_data __rcu *beacon;
595         /* just protects beacon updates for now */
596         struct mutex mtx;
597         const u8 *ie;
598         u8 ie_len;
599         enum {
600                 IEEE80211_MESH_SEC_NONE = 0x0,
601                 IEEE80211_MESH_SEC_AUTHED = 0x1,
602                 IEEE80211_MESH_SEC_SECURED = 0x2,
603         } security;
604         bool user_mpm;
605         /* Extensible Synchronization Framework */
606         const struct ieee80211_mesh_sync_ops *sync_ops;
607         s64 sync_offset_clockdrift_max;
608         spinlock_t sync_offset_lock;
609         bool adjusting_tbtt;
610         /* mesh power save */
611         enum nl80211_mesh_power_mode nonpeer_pm;
612         int ps_peers_light_sleep;
613         int ps_peers_deep_sleep;
614         struct ps_data ps;
615 };
616 
617 #ifdef CONFIG_MAC80211_MESH
618 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
619         do { (msh)->mshstats.name++; } while (0)
620 #else
621 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
622         do { } while (0)
623 #endif
624 
625 /**
626  * enum ieee80211_sub_if_data_flags - virtual interface flags
627  *
628  * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
629  * @IEEE80211_SDATA_PROMISC: interface is promisc
630  * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
631  * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
632  *      associated stations and deliver multicast frames both
633  *      back to wireless media and to the local net stack.
634  * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
635  * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
636  */
637 enum ieee80211_sub_if_data_flags {
638         IEEE80211_SDATA_ALLMULTI                = BIT(0),
639         IEEE80211_SDATA_PROMISC                 = BIT(1),
640         IEEE80211_SDATA_OPERATING_GMODE         = BIT(2),
641         IEEE80211_SDATA_DONT_BRIDGE_PACKETS     = BIT(3),
642         IEEE80211_SDATA_DISCONNECT_RESUME       = BIT(4),
643         IEEE80211_SDATA_IN_DRIVER               = BIT(5),
644 };
645 
646 /**
647  * enum ieee80211_sdata_state_bits - virtual interface state bits
648  * @SDATA_STATE_RUNNING: virtual interface is up & running; this
649  *      mirrors netif_running() but is separate for interface type
650  *      change handling while the interface is up
651  * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
652  *      mode, so queues are stopped
653  * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
654  *      to offchannel, reset when offchannel returns
655  */
656 enum ieee80211_sdata_state_bits {
657         SDATA_STATE_RUNNING,
658         SDATA_STATE_OFFCHANNEL,
659         SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
660 };
661 
662 /**
663  * enum ieee80211_chanctx_mode - channel context configuration mode
664  *
665  * @IEEE80211_CHANCTX_SHARED: channel context may be used by
666  *      multiple interfaces
667  * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
668  *      only by a single interface. This can be used for example for
669  *      non-fixed channel IBSS.
670  */
671 enum ieee80211_chanctx_mode {
672         IEEE80211_CHANCTX_SHARED,
673         IEEE80211_CHANCTX_EXCLUSIVE
674 };
675 
676 struct ieee80211_chanctx {
677         struct list_head list;
678         struct rcu_head rcu_head;
679 
680         enum ieee80211_chanctx_mode mode;
681         int refcount;
682         bool driver_present;
683 
684         struct ieee80211_chanctx_conf conf;
685 };
686 
687 struct ieee80211_sub_if_data {
688         struct list_head list;
689 
690         struct wireless_dev wdev;
691 
692         /* keys */
693         struct list_head key_list;
694 
695         /* count for keys needing tailroom space allocation */
696         int crypto_tx_tailroom_needed_cnt;
697         int crypto_tx_tailroom_pending_dec;
698         struct delayed_work dec_tailroom_needed_wk;
699 
700         struct net_device *dev;
701         struct ieee80211_local *local;
702 
703         unsigned int flags;
704 
705         unsigned long state;
706 
707         int drop_unencrypted;
708 
709         char name[IFNAMSIZ];
710 
711         /* Fragment table for host-based reassembly */
712         struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
713         unsigned int fragment_next;
714 
715         /* TID bitmap for NoAck policy */
716         u16 noack_map;
717 
718         /* bit field of ACM bits (BIT(802.1D tag)) */
719         u8 wmm_acm;
720 
721         struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
722         struct ieee80211_key __rcu *default_unicast_key;
723         struct ieee80211_key __rcu *default_multicast_key;
724         struct ieee80211_key __rcu *default_mgmt_key;
725 
726         u16 sequence_number;
727         __be16 control_port_protocol;
728         bool control_port_no_encrypt;
729 
730         struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
731 
732         /* used to reconfigure hardware SM PS */
733         struct work_struct recalc_smps;
734 
735         struct work_struct work;
736         struct sk_buff_head skb_queue;
737 
738         u8 needed_rx_chains;
739         enum ieee80211_smps_mode smps_mode;
740 
741         int user_power_level; /* in dBm */
742         int ap_power_level; /* in dBm */
743 
744         bool radar_required;
745         struct delayed_work dfs_cac_timer_work;
746 
747         /*
748          * AP this belongs to: self in AP mode and
749          * corresponding AP in VLAN mode, NULL for
750          * all others (might be needed later in IBSS)
751          */
752         struct ieee80211_if_ap *bss;
753 
754         /* bitmap of allowed (non-MCS) rate indexes for rate control */
755         u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
756 
757         bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
758         u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
759 
760         union {
761                 struct ieee80211_if_ap ap;
762                 struct ieee80211_if_wds wds;
763                 struct ieee80211_if_vlan vlan;
764                 struct ieee80211_if_managed mgd;
765                 struct ieee80211_if_ibss ibss;
766                 struct ieee80211_if_mesh mesh;
767                 u32 mntr_flags;
768         } u;
769 
770         spinlock_t cleanup_stations_lock;
771         struct list_head cleanup_stations;
772         struct work_struct cleanup_stations_wk;
773 
774 #ifdef CONFIG_MAC80211_DEBUGFS
775         struct {
776                 struct dentry *subdir_stations;
777                 struct dentry *default_unicast_key;
778                 struct dentry *default_multicast_key;
779                 struct dentry *default_mgmt_key;
780         } debugfs;
781 #endif
782 
783         /* must be last, dynamically sized area in this! */
784         struct ieee80211_vif vif;
785 };
786 
787 static inline
788 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
789 {
790         return container_of(p, struct ieee80211_sub_if_data, vif);
791 }
792 
793 static inline enum ieee80211_band
794 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
795 {
796         enum ieee80211_band band = IEEE80211_BAND_2GHZ;
797         struct ieee80211_chanctx_conf *chanctx_conf;
798 
799         rcu_read_lock();
800         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
801         if (!WARN_ON(!chanctx_conf))
802                 band = chanctx_conf->def.chan->band;
803         rcu_read_unlock();
804 
805         return band;
806 }
807 
808 enum sdata_queue_type {
809         IEEE80211_SDATA_QUEUE_TYPE_FRAME        = 0,
810         IEEE80211_SDATA_QUEUE_AGG_START         = 1,
811         IEEE80211_SDATA_QUEUE_AGG_STOP          = 2,
812 };
813 
814 enum {
815         IEEE80211_RX_MSG        = 1,
816         IEEE80211_TX_STATUS_MSG = 2,
817 };
818 
819 enum queue_stop_reason {
820         IEEE80211_QUEUE_STOP_REASON_DRIVER,
821         IEEE80211_QUEUE_STOP_REASON_PS,
822         IEEE80211_QUEUE_STOP_REASON_CSA,
823         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
824         IEEE80211_QUEUE_STOP_REASON_SUSPEND,
825         IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
826         IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
827         IEEE80211_QUEUE_STOP_REASON_FLUSH,
828 };
829 
830 #ifdef CONFIG_MAC80211_LEDS
831 struct tpt_led_trigger {
832         struct led_trigger trig;
833         char name[32];
834         const struct ieee80211_tpt_blink *blink_table;
835         unsigned int blink_table_len;
836         struct timer_list timer;
837         unsigned long prev_traffic;
838         unsigned long tx_bytes, rx_bytes;
839         unsigned int active, want;
840         bool running;
841 };
842 #endif
843 
844 /**
845  * mac80211 scan flags - currently active scan mode
846  *
847  * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
848  *      well be on the operating channel
849  * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
850  *      determine if we are on the operating channel or not
851  * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
852  *      channel. This should not interrupt normal traffic.
853  * @SCAN_COMPLETED: Set for our scan work function when the driver reported
854  *      that the scan completed.
855  * @SCAN_ABORTED: Set for our scan work function when the driver reported
856  *      a scan complete for an aborted scan.
857  * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
858  *      cancelled.
859  */
860 enum {
861         SCAN_SW_SCANNING,
862         SCAN_HW_SCANNING,
863         SCAN_ONCHANNEL_SCANNING,
864         SCAN_COMPLETED,
865         SCAN_ABORTED,
866         SCAN_HW_CANCELLED,
867 };
868 
869 /**
870  * enum mac80211_scan_state - scan state machine states
871  *
872  * @SCAN_DECISION: Main entry point to the scan state machine, this state
873  *      determines if we should keep on scanning or switch back to the
874  *      operating channel
875  * @SCAN_SET_CHANNEL: Set the next channel to be scanned
876  * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
877  * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
878  *      send out data
879  * @SCAN_RESUME: Resume the scan and scan the next channel
880  * @SCAN_ABORT: Abort the scan and go back to operating channel
881  */
882 enum mac80211_scan_state {
883         SCAN_DECISION,
884         SCAN_SET_CHANNEL,
885         SCAN_SEND_PROBE,
886         SCAN_SUSPEND,
887         SCAN_RESUME,
888         SCAN_ABORT,
889 };
890 
891 struct ieee80211_local {
892         /* embed the driver visible part.
893          * don't cast (use the static inlines below), but we keep
894          * it first anyway so they become a no-op */
895         struct ieee80211_hw hw;
896 
897         const struct ieee80211_ops *ops;
898 
899         /*
900          * private workqueue to mac80211. mac80211 makes this accessible
901          * via ieee80211_queue_work()
902          */
903         struct workqueue_struct *workqueue;
904 
905         unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
906         /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
907         spinlock_t queue_stop_reason_lock;
908 
909         int open_count;
910         int monitors, cooked_mntrs;
911         /* number of interfaces with corresponding FIF_ flags */
912         int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
913             fif_probe_req;
914         int probe_req_reg;
915         unsigned int filter_flags; /* FIF_* */
916 
917         bool wiphy_ciphers_allocated;
918 
919         bool use_chanctx;
920 
921         /* protects the aggregated multicast list and filter calls */
922         spinlock_t filter_lock;
923 
924         /* used for uploading changed mc list */
925         struct work_struct reconfig_filter;
926 
927         /* aggregated multicast list */
928         struct netdev_hw_addr_list mc_list;
929 
930         bool tim_in_locked_section; /* see ieee80211_beacon_get() */
931 
932         /*
933          * suspended is true if we finished all the suspend _and_ we have
934          * not yet come up from resume. This is to be used by mac80211
935          * to ensure driver sanity during suspend and mac80211's own
936          * sanity. It can eventually be used for WoW as well.
937          */
938         bool suspended;
939 
940         /*
941          * Resuming is true while suspended, but when we're reprogramming the
942          * hardware -- at that time it's allowed to use ieee80211_queue_work()
943          * again even though some other parts of the stack are still suspended
944          * and we still drop received frames to avoid waking the stack.
945          */
946         bool resuming;
947 
948         /*
949          * quiescing is true during the suspend process _only_ to
950          * ease timer cancelling etc.
951          */
952         bool quiescing;
953 
954         /* device is started */
955         bool started;
956 
957         /* device is during a HW reconfig */
958         bool in_reconfig;
959 
960         /* wowlan is enabled -- don't reconfig on resume */
961         bool wowlan;
962 
963         /* DFS/radar detection is enabled */
964         bool radar_detect_enabled;
965         struct work_struct radar_detected_work;
966 
967         /* number of RX chains the hardware has */
968         u8 rx_chains;
969 
970         int tx_headroom; /* required headroom for hardware/radiotap */
971 
972         /* Tasklet and skb queue to process calls from IRQ mode. All frames
973          * added to skb_queue will be processed, but frames in
974          * skb_queue_unreliable may be dropped if the total length of these
975          * queues increases over the limit. */
976 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
977         struct tasklet_struct tasklet;
978         struct sk_buff_head skb_queue;
979         struct sk_buff_head skb_queue_unreliable;
980 
981         spinlock_t rx_path_lock;
982 
983         /* Station data */
984         /*
985          * The mutex only protects the list, hash table and
986          * counter, reads are done with RCU.
987          */
988         struct mutex sta_mtx;
989         spinlock_t tim_lock;
990         unsigned long num_sta;
991         struct list_head sta_list;
992         struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
993         struct timer_list sta_cleanup;
994         int sta_generation;
995 
996         struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
997         struct tasklet_struct tx_pending_tasklet;
998 
999         atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1000 
1001         /* number of interfaces with corresponding IFF_ flags */
1002         atomic_t iff_allmultis, iff_promiscs;
1003 
1004         struct rate_control_ref *rate_ctrl;
1005 
1006         struct crypto_cipher *wep_tx_tfm;
1007         struct crypto_cipher *wep_rx_tfm;
1008         u32 wep_iv;
1009 
1010         /* see iface.c */
1011         struct list_head interfaces;
1012         struct mutex iflist_mtx;
1013 
1014         /*
1015          * Key mutex, protects sdata's key_list and sta_info's
1016          * key pointers (write access, they're RCU.)
1017          */
1018         struct mutex key_mtx;
1019 
1020         /* mutex for scan and work locking */
1021         struct mutex mtx;
1022 
1023         /* Scanning and BSS list */
1024         unsigned long scanning;
1025         struct cfg80211_ssid scan_ssid;
1026         struct cfg80211_scan_request *int_scan_req;
1027         struct cfg80211_scan_request *scan_req, *hw_scan_req;
1028         struct ieee80211_channel *scan_channel;
1029         enum ieee80211_band hw_scan_band;
1030         int scan_channel_idx;
1031         int scan_ies_len;
1032         int hw_scan_ies_bufsize;
1033 
1034         struct work_struct sched_scan_stopped_work;
1035         struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1036 
1037         unsigned long leave_oper_channel_time;
1038         enum mac80211_scan_state next_scan_state;
1039         struct delayed_work scan_work;
1040         struct ieee80211_sub_if_data __rcu *scan_sdata;
1041         struct cfg80211_chan_def csa_chandef;
1042         /* For backward compatibility only -- do not use */
1043         struct cfg80211_chan_def _oper_chandef;
1044 
1045         /* Temporary remain-on-channel for off-channel operations */
1046         struct ieee80211_channel *tmp_channel;
1047 
1048         /* channel contexts */
1049         struct list_head chanctx_list;
1050         struct mutex chanctx_mtx;
1051 
1052         /* SNMP counters */
1053         /* dot11CountersTable */
1054         u32 dot11TransmittedFragmentCount;
1055         u32 dot11MulticastTransmittedFrameCount;
1056         u32 dot11FailedCount;
1057         u32 dot11RetryCount;
1058         u32 dot11MultipleRetryCount;
1059         u32 dot11FrameDuplicateCount;
1060         u32 dot11ReceivedFragmentCount;
1061         u32 dot11MulticastReceivedFrameCount;
1062         u32 dot11TransmittedFrameCount;
1063 
1064 #ifdef CONFIG_MAC80211_LEDS
1065         int tx_led_counter, rx_led_counter;
1066         struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1067         struct tpt_led_trigger *tpt_led_trigger;
1068         char tx_led_name[32], rx_led_name[32],
1069              assoc_led_name[32], radio_led_name[32];
1070 #endif
1071 
1072 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1073         /* TX/RX handler statistics */
1074         unsigned int tx_handlers_drop;
1075         unsigned int tx_handlers_queued;
1076         unsigned int tx_handlers_drop_unencrypted;
1077         unsigned int tx_handlers_drop_fragment;
1078         unsigned int tx_handlers_drop_wep;
1079         unsigned int tx_handlers_drop_not_assoc;
1080         unsigned int tx_handlers_drop_unauth_port;
1081         unsigned int rx_handlers_drop;
1082         unsigned int rx_handlers_queued;
1083         unsigned int rx_handlers_drop_nullfunc;
1084         unsigned int rx_handlers_drop_defrag;
1085         unsigned int rx_handlers_drop_short;
1086         unsigned int tx_expand_skb_head;
1087         unsigned int tx_expand_skb_head_cloned;
1088         unsigned int rx_expand_skb_head;
1089         unsigned int rx_expand_skb_head2;
1090         unsigned int rx_handlers_fragments;
1091         unsigned int tx_status_drop;
1092 #define I802_DEBUG_INC(c) (c)++
1093 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1094 #define I802_DEBUG_INC(c) do { } while (0)
1095 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1096 
1097 
1098         int total_ps_buffered; /* total number of all buffered unicast and
1099                                 * multicast packets for power saving stations
1100                                 */
1101 
1102         bool pspolling;
1103         bool offchannel_ps_enabled;
1104         /*
1105          * PS can only be enabled when we have exactly one managed
1106          * interface (and monitors) in PS, this then points there.
1107          */
1108         struct ieee80211_sub_if_data *ps_sdata;
1109         struct work_struct dynamic_ps_enable_work;
1110         struct work_struct dynamic_ps_disable_work;
1111         struct timer_list dynamic_ps_timer;
1112         struct notifier_block network_latency_notifier;
1113         struct notifier_block ifa_notifier;
1114         struct notifier_block ifa6_notifier;
1115 
1116         /*
1117          * The dynamic ps timeout configured from user space via WEXT -
1118          * this will override whatever chosen by mac80211 internally.
1119          */
1120         int dynamic_ps_forced_timeout;
1121 
1122         int user_power_level; /* in dBm, for all interfaces */
1123 
1124         enum ieee80211_smps_mode smps_mode;
1125 
1126         struct work_struct restart_work;
1127 
1128 #ifdef CONFIG_MAC80211_DEBUGFS
1129         struct local_debugfsdentries {
1130                 struct dentry *rcdir;
1131                 struct dentry *keys;
1132         } debugfs;
1133 #endif
1134 
1135         /*
1136          * Remain-on-channel support
1137          */
1138         struct list_head roc_list;
1139         struct work_struct hw_roc_start, hw_roc_done;
1140         unsigned long hw_roc_start_time;
1141         u64 roc_cookie_counter;
1142 
1143         struct idr ack_status_frames;
1144         spinlock_t ack_status_lock;
1145 
1146         struct ieee80211_sub_if_data __rcu *p2p_sdata;
1147 
1148         /* virtual monitor interface */
1149         struct ieee80211_sub_if_data __rcu *monitor_sdata;
1150         struct cfg80211_chan_def monitor_chandef;
1151 };
1152 
1153 static inline struct ieee80211_sub_if_data *
1154 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1155 {
1156         return netdev_priv(dev);
1157 }
1158 
1159 static inline struct ieee80211_sub_if_data *
1160 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1161 {
1162         return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1163 }
1164 
1165 /* this struct represents 802.11n's RA/TID combination */
1166 struct ieee80211_ra_tid {
1167         u8 ra[ETH_ALEN];
1168         u16 tid;
1169 };
1170 
1171 /* Parsed Information Elements */
1172 struct ieee802_11_elems {
1173         const u8 *ie_start;
1174         size_t total_len;
1175 
1176         /* pointers to IEs */
1177         const u8 *ssid;
1178         const u8 *supp_rates;
1179         const u8 *ds_params;
1180         const struct ieee80211_tim_ie *tim;
1181         const u8 *challenge;
1182         const u8 *rsn;
1183         const u8 *erp_info;
1184         const u8 *ext_supp_rates;
1185         const u8 *wmm_info;
1186         const u8 *wmm_param;
1187         const struct ieee80211_ht_cap *ht_cap_elem;
1188         const struct ieee80211_ht_operation *ht_operation;
1189         const struct ieee80211_vht_cap *vht_cap_elem;
1190         const struct ieee80211_vht_operation *vht_operation;
1191         const struct ieee80211_meshconf_ie *mesh_config;
1192         const u8 *mesh_id;
1193         const u8 *peering;
1194         const __le16 *awake_window;
1195         const u8 *preq;
1196         const u8 *prep;
1197         const u8 *perr;
1198         const struct ieee80211_rann_ie *rann;
1199         const struct ieee80211_channel_sw_ie *ch_switch_ie;
1200         const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1201         const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1202         const u8 *country_elem;
1203         const u8 *pwr_constr_elem;
1204         const struct ieee80211_timeout_interval_ie *timeout_int;
1205         const u8 *opmode_notif;
1206         const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1207 
1208         /* length of them, respectively */
1209         u8 ssid_len;
1210         u8 supp_rates_len;
1211         u8 tim_len;
1212         u8 challenge_len;
1213         u8 rsn_len;
1214         u8 ext_supp_rates_len;
1215         u8 wmm_info_len;
1216         u8 wmm_param_len;
1217         u8 mesh_id_len;
1218         u8 peering_len;
1219         u8 preq_len;
1220         u8 prep_len;
1221         u8 perr_len;
1222         u8 country_elem_len;
1223 
1224         /* whether a parse error occurred while retrieving these elements */
1225         bool parse_error;
1226 };
1227 
1228 static inline struct ieee80211_local *hw_to_local(
1229         struct ieee80211_hw *hw)
1230 {
1231         return container_of(hw, struct ieee80211_local, hw);
1232 }
1233 
1234 
1235 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1236 {
1237         return ether_addr_equal(raddr, addr) ||
1238                is_broadcast_ether_addr(raddr);
1239 }
1240 
1241 static inline bool
1242 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1243 {
1244         WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1245                      status->flag & RX_FLAG_MACTIME_END);
1246         return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1247 }
1248 
1249 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1250                                      struct ieee80211_rx_status *status,
1251                                      unsigned int mpdu_len,
1252                                      unsigned int mpdu_offset);
1253 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1254 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1255 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1256                                       u32 changed);
1257 void ieee80211_configure_filter(struct ieee80211_local *local);
1258 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1259 
1260 /* STA code */
1261 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1262 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1263                        struct cfg80211_auth_request *req);
1264 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1265                         struct cfg80211_assoc_request *req);
1266 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1267                          struct cfg80211_deauth_request *req);
1268 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1269                            struct cfg80211_disassoc_request *req);
1270 void ieee80211_send_pspoll(struct ieee80211_local *local,
1271                            struct ieee80211_sub_if_data *sdata);
1272 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1273 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1274 int ieee80211_max_network_latency(struct notifier_block *nb,
1275                                   unsigned long data, void *dummy);
1276 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1277 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1278 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1279                                   struct sk_buff *skb);
1280 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1281 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1282 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1283 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1284                                   __le16 fc, bool acked);
1285 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1286 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1287 
1288 /* IBSS code */
1289 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1290 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1291 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1292                               const u8 *bssid, const u8 *addr, u32 supp_rates);
1293 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1294                         struct cfg80211_ibss_params *params);
1295 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1296 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1297 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1298                                    struct sk_buff *skb);
1299 
1300 /* mesh code */
1301 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1302 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1303                                    struct sk_buff *skb);
1304 
1305 /* scan/BSS handling */
1306 void ieee80211_scan_work(struct work_struct *work);
1307 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1308                                 const u8 *ssid, u8 ssid_len,
1309                                 struct ieee80211_channel *chan);
1310 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1311                            struct cfg80211_scan_request *req);
1312 void ieee80211_scan_cancel(struct ieee80211_local *local);
1313 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1314 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1315 
1316 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1317 struct ieee80211_bss *
1318 ieee80211_bss_info_update(struct ieee80211_local *local,
1319                           struct ieee80211_rx_status *rx_status,
1320                           struct ieee80211_mgmt *mgmt,
1321                           size_t len,
1322                           struct ieee802_11_elems *elems,
1323                           struct ieee80211_channel *channel);
1324 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1325                           struct ieee80211_bss *bss);
1326 
1327 /* scheduled scan handling */
1328 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1329                                        struct cfg80211_sched_scan_request *req);
1330 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1331 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1332 
1333 /* off-channel helpers */
1334 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1335 void ieee80211_offchannel_return(struct ieee80211_local *local);
1336 void ieee80211_roc_setup(struct ieee80211_local *local);
1337 void ieee80211_start_next_roc(struct ieee80211_local *local);
1338 void ieee80211_roc_purge(struct ieee80211_local *local,
1339                          struct ieee80211_sub_if_data *sdata);
1340 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1341 void ieee80211_sw_roc_work(struct work_struct *work);
1342 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1343 
1344 /* interface handling */
1345 int ieee80211_iface_init(void);
1346 void ieee80211_iface_exit(void);
1347 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1348                      struct wireless_dev **new_wdev, enum nl80211_iftype type,
1349                      struct vif_params *params);
1350 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1351                              enum nl80211_iftype type);
1352 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1353 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1354 u32 ieee80211_idle_off(struct ieee80211_local *local);
1355 void ieee80211_recalc_idle(struct ieee80211_local *local);
1356 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1357                                     const int offset);
1358 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1359 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1360 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1361 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1362 
1363 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1364 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1365 
1366 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1367 {
1368         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1369 }
1370 
1371 /* tx handling */
1372 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1373 void ieee80211_tx_pending(unsigned long data);
1374 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1375                                          struct net_device *dev);
1376 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1377                                        struct net_device *dev);
1378 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1379                               struct sk_buff_head *skbs);
1380 
1381 /* HT */
1382 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1383                                      struct ieee80211_sta_ht_cap *ht_cap);
1384 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1385                                        struct ieee80211_supported_band *sband,
1386                                        const struct ieee80211_ht_cap *ht_cap_ie,
1387                                        struct sta_info *sta);
1388 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1389                           const u8 *da, u16 tid,
1390                           u16 initiator, u16 reason_code);
1391 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1392                                enum ieee80211_smps_mode smps, const u8 *da,
1393                                const u8 *bssid);
1394 void ieee80211_request_smps_work(struct work_struct *work);
1395 
1396 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1397                                      u16 initiator, u16 reason, bool stop);
1398 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1399                                     u16 initiator, u16 reason, bool stop);
1400 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1401                                          enum ieee80211_agg_stop_reason reason);
1402 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1403                              struct sta_info *sta,
1404                              struct ieee80211_mgmt *mgmt, size_t len);
1405 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1406                                   struct sta_info *sta,
1407                                   struct ieee80211_mgmt *mgmt,
1408                                   size_t len);
1409 void ieee80211_process_addba_request(struct ieee80211_local *local,
1410                                      struct sta_info *sta,
1411                                      struct ieee80211_mgmt *mgmt,
1412                                      size_t len);
1413 
1414 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1415                                    enum ieee80211_agg_stop_reason reason);
1416 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1417                                     enum ieee80211_agg_stop_reason reason);
1418 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1419 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1420 void ieee80211_ba_session_work(struct work_struct *work);
1421 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1422 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1423 
1424 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1425 
1426 /* VHT */
1427 void
1428 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1429                                     struct ieee80211_supported_band *sband,
1430                                     const struct ieee80211_vht_cap *vht_cap_ie,
1431                                     struct sta_info *sta);
1432 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1433 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1434 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1435                                  struct sta_info *sta, u8 opmode,
1436                                  enum ieee80211_band band, bool nss_only);
1437 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1438                                       struct ieee80211_sta_vht_cap *vht_cap);
1439 
1440 /* Spectrum management */
1441 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1442                                        struct ieee80211_mgmt *mgmt,
1443                                        size_t len);
1444 
1445 /* Suspend/resume and hw reconfiguration */
1446 int ieee80211_reconfig(struct ieee80211_local *local);
1447 void ieee80211_stop_device(struct ieee80211_local *local);
1448 
1449 int __ieee80211_suspend(struct ieee80211_hw *hw,
1450                         struct cfg80211_wowlan *wowlan);
1451 
1452 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1453 {
1454         struct ieee80211_local *local = hw_to_local(hw);
1455 
1456         WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1457                 "%s: resume with hardware scan still in progress\n",
1458                 wiphy_name(hw->wiphy));
1459 
1460         return ieee80211_reconfig(hw_to_local(hw));
1461 }
1462 
1463 /* utility functions/constants */
1464 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1465 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1466                         enum nl80211_iftype type);
1467 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1468                              int rate, int erp, int short_preamble);
1469 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1470                                      struct ieee80211_hdr *hdr, const u8 *tsc,
1471                                      gfp_t gfp);
1472 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1473                                bool bss_notify);
1474 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1475                     enum ieee80211_band band);
1476 
1477 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1478                                  struct sk_buff *skb, int tid,
1479                                  enum ieee80211_band band);
1480 
1481 static inline void
1482 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1483                           struct sk_buff *skb, int tid,
1484                           enum ieee80211_band band)
1485 {
1486         rcu_read_lock();
1487         __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1488         rcu_read_unlock();
1489 }
1490 
1491 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1492                                         struct sk_buff *skb, int tid)
1493 {
1494         struct ieee80211_chanctx_conf *chanctx_conf;
1495 
1496         rcu_read_lock();
1497         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1498         if (WARN_ON(!chanctx_conf)) {
1499                 rcu_read_unlock();
1500                 kfree_skb(skb);
1501                 return;
1502         }
1503 
1504         __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1505                                     chanctx_conf->def.chan->band);
1506         rcu_read_unlock();
1507 }
1508 
1509 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1510                                     struct sk_buff *skb)
1511 {
1512         /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1513         ieee80211_tx_skb_tid(sdata, skb, 7);
1514 }
1515 
1516 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1517                                struct ieee802_11_elems *elems,
1518                                u64 filter, u32 crc);
1519 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1520                                           bool action,
1521                                           struct ieee802_11_elems *elems)
1522 {
1523         ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1524 }
1525 
1526 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1527                               enum ieee80211_band band);
1528 
1529 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1530 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1531 void ieee80211_dynamic_ps_timer(unsigned long data);
1532 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1533                              struct ieee80211_sub_if_data *sdata,
1534                              int powersave);
1535 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1536                              struct ieee80211_hdr *hdr);
1537 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1538                              struct ieee80211_hdr *hdr, bool ack);
1539 
1540 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1541                                      unsigned long queues,
1542                                      enum queue_stop_reason reason);
1543 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1544                                      unsigned long queues,
1545                                      enum queue_stop_reason reason);
1546 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1547                                     enum queue_stop_reason reason);
1548 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1549                                     enum queue_stop_reason reason);
1550 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1551 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1552                                struct sk_buff *skb);
1553 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1554                                    struct sk_buff_head *skbs,
1555                                    void (*fn)(void *data), void *data);
1556 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1557                                               struct sk_buff_head *skbs)
1558 {
1559         ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1560 }
1561 void ieee80211_flush_queues(struct ieee80211_local *local,
1562                             struct ieee80211_sub_if_data *sdata);
1563 
1564 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1565                          u16 transaction, u16 auth_alg, u16 status,
1566                          const u8 *extra, size_t extra_len, const u8 *bssid,
1567                          const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1568                          u32 tx_flags);
1569 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1570                                     const u8 *bssid, u16 stype, u16 reason,
1571                                     bool send_frame, u8 *frame_buf);
1572 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1573                              size_t buffer_len, const u8 *ie, size_t ie_len,
1574                              enum ieee80211_band band, u32 rate_mask,
1575                              u8 channel);
1576 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1577                                           u8 *dst, u32 ratemask,
1578                                           struct ieee80211_channel *chan,
1579                                           const u8 *ssid, size_t ssid_len,
1580                                           const u8 *ie, size_t ie_len,
1581                                           bool directed);
1582 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1583                               const u8 *ssid, size_t ssid_len,
1584                               const u8 *ie, size_t ie_len,
1585                               u32 ratemask, bool directed, u32 tx_flags,
1586                               struct ieee80211_channel *channel, bool scan);
1587 
1588 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1589                                   const size_t supp_rates_len,
1590                                   const u8 *supp_rates);
1591 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1592                             struct ieee802_11_elems *elems,
1593                             enum ieee80211_band band, u32 *basic_rates);
1594 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1595                              enum ieee80211_smps_mode smps_mode);
1596 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1597 
1598 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1599                           const u8 *ids, int n_ids, size_t offset);
1600 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1601 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1602                               u16 cap);
1603 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1604                                const struct cfg80211_chan_def *chandef,
1605                                u16 prot_mode);
1606 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1607                                u32 cap);
1608 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1609                             struct sk_buff *skb, bool need_basic,
1610                             enum ieee80211_band band);
1611 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1612                                 struct sk_buff *skb, bool need_basic,
1613                                 enum ieee80211_band band);
1614 
1615 /* channel management */
1616 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1617                                   const struct ieee80211_ht_operation *ht_oper,
1618                                   struct cfg80211_chan_def *chandef);
1619 
1620 int __must_check
1621 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1622                           const struct cfg80211_chan_def *chandef,
1623                           enum ieee80211_chanctx_mode mode);
1624 int __must_check
1625 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1626                                const struct cfg80211_chan_def *chandef,
1627                                u32 *changed);
1628 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1629 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1630 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1631                                          bool clear);
1632 
1633 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1634                                    struct ieee80211_chanctx *chanctx);
1635 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1636                                     struct ieee80211_chanctx *chanctx);
1637 
1638 void ieee80211_dfs_cac_timer(unsigned long data);
1639 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1640 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1641 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1642 
1643 #ifdef CONFIG_MAC80211_NOINLINE
1644 #define debug_noinline noinline
1645 #else
1646 #define debug_noinline
1647 #endif
1648 
1649 #endif /* IEEE80211_I_H */
1650 

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