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 <net/ieee80211_radiotap.h>
30 #include <net/cfg80211.h>
31 #include <net/mac80211.h>
32 #include "key.h"
33 #include "sta_info.h"
34 #include "debug.h"
35
36 struct ieee80211_local;
37
38 /* Maximum number of broadcast/multicast frames to buffer when some of the
39 * associated stations are using power saving. */
40 #define AP_MAX_BC_BUFFER 128
41
42 /* Maximum number of frames buffered to all STAs, including multicast frames.
43 * Note: increasing this limit increases the potential memory requirement. Each
44 * frame can be up to about 2 kB long. */
45 #define TOTAL_MAX_TX_BUFFER 512
46
47 /* Required encryption head and tailroom */
48 #define IEEE80211_ENCRYPT_HEADROOM 8
49 #define IEEE80211_ENCRYPT_TAILROOM 18
50
51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
52 * reception of at least three fragmented frames. This limit can be increased
53 * by changing this define, at the cost of slower frame reassembly and
54 * increased memory use (about 2 kB of RAM per entry). */
55 #define IEEE80211_FRAGMENT_MAX 4
56
57 /* power level hasn't been configured (or set to automatic) */
58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
59
60 /*
61 * Some APs experience problems when working with U-APSD. Decreasing the
62 * probability of that happening by using legacy mode for all ACs but VO isn't
63 * enough.
64 *
65 * Cisco 4410N originally forced us to enable VO by default only because it
66 * treated non-VO ACs as legacy.
67 *
68 * However some APs (notably Netgear R7000) silently reclassify packets to
69 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
70 * clients would never see some frames (e.g. ARP responses) or would fetch them
71 * accidentally after a long time.
72 *
73 * It makes little sense to enable u-APSD queues by default because it needs
74 * userspace applications to be aware of it to actually take advantage of the
75 * possible additional powersavings. Implicitly depending on driver autotrigger
76 * frame support doesn't make much sense.
77 */
78 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
79
80 #define IEEE80211_DEFAULT_MAX_SP_LEN \
81 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
82
83 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
84
85 struct ieee80211_fragment_entry {
86 unsigned long first_frag_time;
87 unsigned int seq;
88 unsigned int rx_queue;
89 unsigned int last_frag;
90 unsigned int extra_len;
91 struct sk_buff_head skb_list;
92 int ccmp; /* Whether fragments were encrypted with CCMP */
93 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
94 };
95
96
97 struct ieee80211_bss {
98 u32 device_ts_beacon, device_ts_presp;
99
100 bool wmm_used;
101 bool uapsd_supported;
102
103 #define IEEE80211_MAX_SUPP_RATES 32
104 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
105 size_t supp_rates_len;
106 struct ieee80211_rate *beacon_rate;
107
108 /*
109 * During association, we save an ERP value from a probe response so
110 * that we can feed ERP info to the driver when handling the
111 * association completes. these fields probably won't be up-to-date
112 * otherwise, you probably don't want to use them.
113 */
114 bool has_erp_value;
115 u8 erp_value;
116
117 /* Keep track of the corruption of the last beacon/probe response. */
118 u8 corrupt_data;
119
120 /* Keep track of what bits of information we have valid info for. */
121 u8 valid_data;
122 };
123
124 /**
125 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
126 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
127 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
128 *
129 * These are bss flags that are attached to a bss in the
130 * @corrupt_data field of &struct ieee80211_bss.
131 */
132 enum ieee80211_bss_corrupt_data_flags {
133 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
134 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
135 };
136
137 /**
138 * enum ieee80211_valid_data_flags - BSS valid data flags
139 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
140 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
141 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
142 *
143 * These are bss flags that are attached to a bss in the
144 * @valid_data field of &struct ieee80211_bss. They show which parts
145 * of the data structure were recieved as a result of an un-corrupted
146 * beacon/probe response.
147 */
148 enum ieee80211_bss_valid_data_flags {
149 IEEE80211_BSS_VALID_WMM = BIT(1),
150 IEEE80211_BSS_VALID_RATES = BIT(2),
151 IEEE80211_BSS_VALID_ERP = BIT(3)
152 };
153
154 typedef unsigned __bitwise__ ieee80211_tx_result;
155 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
156 #define TX_DROP ((__force ieee80211_tx_result) 1u)
157 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
158
159 #define IEEE80211_TX_UNICAST BIT(1)
160 #define IEEE80211_TX_PS_BUFFERED BIT(2)
161
162 struct ieee80211_tx_data {
163 struct sk_buff *skb;
164 struct sk_buff_head skbs;
165 struct ieee80211_local *local;
166 struct ieee80211_sub_if_data *sdata;
167 struct sta_info *sta;
168 struct ieee80211_key *key;
169 struct ieee80211_tx_rate rate;
170
171 unsigned int flags;
172 };
173
174
175 typedef unsigned __bitwise__ ieee80211_rx_result;
176 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
177 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
178 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
179 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
180
181 /**
182 * enum ieee80211_packet_rx_flags - packet RX flags
183 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
184 * (incl. multicast frames)
185 * @IEEE80211_RX_FRAGMENTED: fragmented frame
186 * @IEEE80211_RX_AMSDU: a-MSDU packet
187 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
188 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
189 *
190 * These are per-frame flags that are attached to a frame in the
191 * @rx_flags field of &struct ieee80211_rx_status.
192 */
193 enum ieee80211_packet_rx_flags {
194 IEEE80211_RX_RA_MATCH = BIT(1),
195 IEEE80211_RX_FRAGMENTED = BIT(2),
196 IEEE80211_RX_AMSDU = BIT(3),
197 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
198 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
199 };
200
201 /**
202 * enum ieee80211_rx_flags - RX data flags
203 *
204 * @IEEE80211_RX_CMNTR: received on cooked monitor already
205 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
206 * to cfg80211_report_obss_beacon().
207 * @IEEE80211_RX_REORDER_TIMER: this frame is released by the
208 * reorder buffer timeout timer, not the normal RX path
209 *
210 * These flags are used across handling multiple interfaces
211 * for a single frame.
212 */
213 enum ieee80211_rx_flags {
214 IEEE80211_RX_CMNTR = BIT(0),
215 IEEE80211_RX_BEACON_REPORTED = BIT(1),
216 IEEE80211_RX_REORDER_TIMER = BIT(2),
217 };
218
219 struct ieee80211_rx_data {
220 struct sk_buff *skb;
221 struct ieee80211_local *local;
222 struct ieee80211_sub_if_data *sdata;
223 struct sta_info *sta;
224 struct ieee80211_key *key;
225
226 unsigned int flags;
227
228 /*
229 * Index into sequence numbers array, 0..16
230 * since the last (16) is used for non-QoS,
231 * will be 16 on non-QoS frames.
232 */
233 int seqno_idx;
234
235 /*
236 * Index into the security IV/PN arrays, 0..16
237 * since the last (16) is used for CCMP-encrypted
238 * management frames, will be set to 16 on mgmt
239 * frames and 0 on non-QoS frames.
240 */
241 int security_idx;
242
243 u32 tkip_iv32;
244 u16 tkip_iv16;
245 };
246
247 struct ieee80211_csa_settings {
248 const u16 *counter_offsets_beacon;
249 const u16 *counter_offsets_presp;
250
251 int n_counter_offsets_beacon;
252 int n_counter_offsets_presp;
253
254 u8 count;
255 };
256
257 struct beacon_data {
258 u8 *head, *tail;
259 int head_len, tail_len;
260 struct ieee80211_meshconf_ie *meshconf;
261 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
262 u8 csa_current_counter;
263 struct rcu_head rcu_head;
264 };
265
266 struct probe_resp {
267 struct rcu_head rcu_head;
268 int len;
269 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
270 u8 data[0];
271 };
272
273 struct ps_data {
274 /* yes, this looks ugly, but guarantees that we can later use
275 * bitmap_empty :)
276 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
277 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
278 __aligned(__alignof__(unsigned long));
279 struct sk_buff_head bc_buf;
280 atomic_t num_sta_ps; /* number of stations in PS mode */
281 int dtim_count;
282 bool dtim_bc_mc;
283 };
284
285 struct ieee80211_if_ap {
286 struct beacon_data __rcu *beacon;
287 struct probe_resp __rcu *probe_resp;
288
289 /* to be used after channel switch. */
290 struct cfg80211_beacon_data *next_beacon;
291 struct list_head vlans; /* write-protected with RTNL and local->mtx */
292
293 struct ps_data ps;
294 atomic_t num_mcast_sta; /* number of stations receiving multicast */
295 enum ieee80211_smps_mode req_smps, /* requested smps mode */
296 driver_smps_mode; /* smps mode request */
297
298 struct work_struct request_smps_work;
299 };
300
301 struct ieee80211_if_wds {
302 struct sta_info *sta;
303 u8 remote_addr[ETH_ALEN];
304 };
305
306 struct ieee80211_if_vlan {
307 struct list_head list; /* write-protected with RTNL and local->mtx */
308
309 /* used for all tx if the VLAN is configured to 4-addr mode */
310 struct sta_info __rcu *sta;
311 };
312
313 struct mesh_stats {
314 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
315 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
316 __u32 fwded_frames; /* Mesh total forwarded frames */
317 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
318 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
319 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
320 };
321
322 #define PREQ_Q_F_START 0x1
323 #define PREQ_Q_F_REFRESH 0x2
324 struct mesh_preq_queue {
325 struct list_head list;
326 u8 dst[ETH_ALEN];
327 u8 flags;
328 };
329
330 #if HZ/100 == 0
331 #define IEEE80211_ROC_MIN_LEFT 1
332 #else
333 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
334 #endif
335
336 struct ieee80211_roc_work {
337 struct list_head list;
338 struct list_head dependents;
339
340 struct delayed_work work;
341
342 struct ieee80211_sub_if_data *sdata;
343
344 struct ieee80211_channel *chan;
345
346 bool started, abort, hw_begun, notified;
347 bool to_be_freed;
348 bool on_channel;
349
350 unsigned long hw_start_time;
351
352 u32 duration, req_duration;
353 struct sk_buff *frame;
354 u64 cookie, mgmt_tx_cookie;
355 enum ieee80211_roc_type type;
356 };
357
358 /* flags used in struct ieee80211_if_managed.flags */
359 enum ieee80211_sta_flags {
360 IEEE80211_STA_CONNECTION_POLL = BIT(1),
361 IEEE80211_STA_CONTROL_PORT = BIT(2),
362 IEEE80211_STA_DISABLE_HT = BIT(4),
363 IEEE80211_STA_MFP_ENABLED = BIT(6),
364 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
365 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
366 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
367 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
368 IEEE80211_STA_DISABLE_VHT = BIT(11),
369 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
370 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
371 IEEE80211_STA_DISABLE_WMM = BIT(14),
372 IEEE80211_STA_ENABLE_RRM = BIT(15),
373 };
374
375 struct ieee80211_mgd_auth_data {
376 struct cfg80211_bss *bss;
377 unsigned long timeout;
378 int tries;
379 u16 algorithm, expected_transaction;
380
381 u8 key[WLAN_KEY_LEN_WEP104];
382 u8 key_len, key_idx;
383 bool done;
384 bool timeout_started;
385
386 u16 sae_trans, sae_status;
387 size_t data_len;
388 u8 data[];
389 };
390
391 struct ieee80211_mgd_assoc_data {
392 struct cfg80211_bss *bss;
393 const u8 *supp_rates;
394
395 unsigned long timeout;
396 int tries;
397
398 u16 capability;
399 u8 prev_bssid[ETH_ALEN];
400 u8 ssid[IEEE80211_MAX_SSID_LEN];
401 u8 ssid_len;
402 u8 supp_rates_len;
403 bool wmm, uapsd;
404 bool need_beacon;
405 bool synced;
406 bool timeout_started;
407
408 u8 ap_ht_param;
409
410 struct ieee80211_vht_cap ap_vht_cap;
411
412 size_t ie_len;
413 u8 ie[];
414 };
415
416 struct ieee80211_if_managed {
417 struct timer_list timer;
418 struct timer_list conn_mon_timer;
419 struct timer_list bcn_mon_timer;
420 struct timer_list chswitch_timer;
421 struct work_struct monitor_work;
422 struct work_struct chswitch_work;
423 struct work_struct beacon_connection_loss_work;
424 struct work_struct csa_connection_drop_work;
425
426 unsigned long beacon_timeout;
427 unsigned long probe_timeout;
428 int probe_send_count;
429 bool nullfunc_failed;
430 bool connection_loss;
431
432 struct cfg80211_bss *associated;
433 struct ieee80211_mgd_auth_data *auth_data;
434 struct ieee80211_mgd_assoc_data *assoc_data;
435
436 u8 bssid[ETH_ALEN];
437
438 u16 aid;
439
440 bool powersave; /* powersave requested for this iface */
441 bool broken_ap; /* AP is broken -- turn off powersave */
442 bool have_beacon;
443 u8 dtim_period;
444 enum ieee80211_smps_mode req_smps, /* requested smps mode */
445 driver_smps_mode; /* smps mode request */
446
447 struct work_struct request_smps_work;
448
449 unsigned int flags;
450
451 bool beacon_crc_valid;
452 u32 beacon_crc;
453
454 bool status_acked;
455 bool status_received;
456 __le16 status_fc;
457
458 enum {
459 IEEE80211_MFP_DISABLED,
460 IEEE80211_MFP_OPTIONAL,
461 IEEE80211_MFP_REQUIRED
462 } mfp; /* management frame protection */
463
464 /*
465 * Bitmask of enabled u-apsd queues,
466 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
467 * to take effect.
468 */
469 unsigned int uapsd_queues;
470
471 /*
472 * Maximum number of buffered frames AP can deliver during a
473 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
474 * Needs a new association to take effect.
475 */
476 unsigned int uapsd_max_sp_len;
477
478 int wmm_last_param_set;
479
480 u8 use_4addr;
481
482 s16 p2p_noa_index;
483
484 /* Signal strength from the last Beacon frame in the current BSS. */
485 int last_beacon_signal;
486
487 /*
488 * Weighted average of the signal strength from Beacon frames in the
489 * current BSS. This is in units of 1/16 of the signal unit to maintain
490 * accuracy and to speed up calculations, i.e., the value need to be
491 * divided by 16 to get the actual value.
492 */
493 int ave_beacon_signal;
494
495 /*
496 * Number of Beacon frames used in ave_beacon_signal. This can be used
497 * to avoid generating less reliable cqm events that would be based
498 * only on couple of received frames.
499 */
500 unsigned int count_beacon_signal;
501
502 /*
503 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
504 * that triggered a cqm event. 0 indicates that no event has been
505 * generated for the current association.
506 */
507 int last_cqm_event_signal;
508
509 /*
510 * State variables for keeping track of RSSI of the AP currently
511 * connected to and informing driver when RSSI has gone
512 * below/above a certain threshold.
513 */
514 int rssi_min_thold, rssi_max_thold;
515 int last_ave_beacon_signal;
516
517 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
518 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
519 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
520 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
521
522 u8 tdls_peer[ETH_ALEN] __aligned(2);
523 struct delayed_work tdls_peer_del_work;
524 };
525
526 struct ieee80211_if_ibss {
527 struct timer_list timer;
528 struct work_struct csa_connection_drop_work;
529
530 unsigned long last_scan_completed;
531
532 u32 basic_rates;
533
534 bool fixed_bssid;
535 bool fixed_channel;
536 bool privacy;
537
538 bool control_port;
539 bool userspace_handles_dfs;
540
541 u8 bssid[ETH_ALEN] __aligned(2);
542 u8 ssid[IEEE80211_MAX_SSID_LEN];
543 u8 ssid_len, ie_len;
544 u8 *ie;
545 struct cfg80211_chan_def chandef;
546
547 unsigned long ibss_join_req;
548 /* probe response/beacon for IBSS */
549 struct beacon_data __rcu *presp;
550
551 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
552 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
553
554 spinlock_t incomplete_lock;
555 struct list_head incomplete_stations;
556
557 enum {
558 IEEE80211_IBSS_MLME_SEARCH,
559 IEEE80211_IBSS_MLME_JOINED,
560 } state;
561 };
562
563 /**
564 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
565 *
566 * these declarations define the interface, which enables
567 * vendor-specific mesh synchronization
568 *
569 */
570 struct ieee802_11_elems;
571 struct ieee80211_mesh_sync_ops {
572 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
573 u16 stype,
574 struct ieee80211_mgmt *mgmt,
575 struct ieee802_11_elems *elems,
576 struct ieee80211_rx_status *rx_status);
577
578 /* should be called with beacon_data under RCU read lock */
579 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
580 struct beacon_data *beacon);
581 /* add other framework functions here */
582 };
583
584 struct mesh_csa_settings {
585 struct rcu_head rcu_head;
586 struct cfg80211_csa_settings settings;
587 };
588
589 struct ieee80211_if_mesh {
590 struct timer_list housekeeping_timer;
591 struct timer_list mesh_path_timer;
592 struct timer_list mesh_path_root_timer;
593
594 unsigned long wrkq_flags;
595 unsigned long mbss_changed;
596
597 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
598 size_t mesh_id_len;
599 /* Active Path Selection Protocol Identifier */
600 u8 mesh_pp_id;
601 /* Active Path Selection Metric Identifier */
602 u8 mesh_pm_id;
603 /* Congestion Control Mode Identifier */
604 u8 mesh_cc_id;
605 /* Synchronization Protocol Identifier */
606 u8 mesh_sp_id;
607 /* Authentication Protocol Identifier */
608 u8 mesh_auth_id;
609 /* Local mesh Sequence Number */
610 u32 sn;
611 /* Last used PREQ ID */
612 u32 preq_id;
613 atomic_t mpaths;
614 /* Timestamp of last SN update */
615 unsigned long last_sn_update;
616 /* Time when it's ok to send next PERR */
617 unsigned long next_perr;
618 /* Timestamp of last PREQ sent */
619 unsigned long last_preq;
620 struct mesh_rmc *rmc;
621 spinlock_t mesh_preq_queue_lock;
622 struct mesh_preq_queue preq_queue;
623 int preq_queue_len;
624 struct mesh_stats mshstats;
625 struct mesh_config mshcfg;
626 atomic_t estab_plinks;
627 u32 mesh_seqnum;
628 bool accepting_plinks;
629 int num_gates;
630 struct beacon_data __rcu *beacon;
631 const u8 *ie;
632 u8 ie_len;
633 enum {
634 IEEE80211_MESH_SEC_NONE = 0x0,
635 IEEE80211_MESH_SEC_AUTHED = 0x1,
636 IEEE80211_MESH_SEC_SECURED = 0x2,
637 } security;
638 bool user_mpm;
639 /* Extensible Synchronization Framework */
640 const struct ieee80211_mesh_sync_ops *sync_ops;
641 s64 sync_offset_clockdrift_max;
642 spinlock_t sync_offset_lock;
643 /* mesh power save */
644 enum nl80211_mesh_power_mode nonpeer_pm;
645 int ps_peers_light_sleep;
646 int ps_peers_deep_sleep;
647 struct ps_data ps;
648 /* Channel Switching Support */
649 struct mesh_csa_settings __rcu *csa;
650 enum {
651 IEEE80211_MESH_CSA_ROLE_NONE,
652 IEEE80211_MESH_CSA_ROLE_INIT,
653 IEEE80211_MESH_CSA_ROLE_REPEATER,
654 } csa_role;
655 u8 chsw_ttl;
656 u16 pre_value;
657
658 /* offset from skb->data while building IE */
659 int meshconf_offset;
660 };
661
662 #ifdef CONFIG_MAC80211_MESH
663 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
664 do { (msh)->mshstats.name++; } while (0)
665 #else
666 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
667 do { } while (0)
668 #endif
669
670 /**
671 * enum ieee80211_sub_if_data_flags - virtual interface flags
672 *
673 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
674 * @IEEE80211_SDATA_PROMISC: interface is promisc
675 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
676 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
677 * associated stations and deliver multicast frames both
678 * back to wireless media and to the local net stack.
679 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
680 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
681 */
682 enum ieee80211_sub_if_data_flags {
683 IEEE80211_SDATA_ALLMULTI = BIT(0),
684 IEEE80211_SDATA_PROMISC = BIT(1),
685 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
686 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
687 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
688 IEEE80211_SDATA_IN_DRIVER = BIT(5),
689 };
690
691 /**
692 * enum ieee80211_sdata_state_bits - virtual interface state bits
693 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
694 * mirrors netif_running() but is separate for interface type
695 * change handling while the interface is up
696 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
697 * mode, so queues are stopped
698 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
699 * to offchannel, reset when offchannel returns
700 */
701 enum ieee80211_sdata_state_bits {
702 SDATA_STATE_RUNNING,
703 SDATA_STATE_OFFCHANNEL,
704 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
705 };
706
707 /**
708 * enum ieee80211_chanctx_mode - channel context configuration mode
709 *
710 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
711 * multiple interfaces
712 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
713 * only by a single interface. This can be used for example for
714 * non-fixed channel IBSS.
715 */
716 enum ieee80211_chanctx_mode {
717 IEEE80211_CHANCTX_SHARED,
718 IEEE80211_CHANCTX_EXCLUSIVE
719 };
720
721 /**
722 * enum ieee80211_chanctx_replace_state - channel context replacement state
723 *
724 * This is used for channel context in-place reservations that require channel
725 * context switch/swap.
726 *
727 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
728 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
729 * by a (not yet registered) channel context pointed by %replace_ctx.
730 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
731 * replaces an existing channel context pointed to by %replace_ctx.
732 */
733 enum ieee80211_chanctx_replace_state {
734 IEEE80211_CHANCTX_REPLACE_NONE,
735 IEEE80211_CHANCTX_WILL_BE_REPLACED,
736 IEEE80211_CHANCTX_REPLACES_OTHER,
737 };
738
739 struct ieee80211_chanctx {
740 struct list_head list;
741 struct rcu_head rcu_head;
742
743 struct list_head assigned_vifs;
744 struct list_head reserved_vifs;
745
746 enum ieee80211_chanctx_replace_state replace_state;
747 struct ieee80211_chanctx *replace_ctx;
748
749 enum ieee80211_chanctx_mode mode;
750 bool driver_present;
751
752 struct ieee80211_chanctx_conf conf;
753 };
754
755 struct mac80211_qos_map {
756 struct cfg80211_qos_map qos_map;
757 struct rcu_head rcu_head;
758 };
759
760 struct ieee80211_sub_if_data {
761 struct list_head list;
762
763 struct wireless_dev wdev;
764
765 /* keys */
766 struct list_head key_list;
767
768 /* count for keys needing tailroom space allocation */
769 int crypto_tx_tailroom_needed_cnt;
770 int crypto_tx_tailroom_pending_dec;
771 struct delayed_work dec_tailroom_needed_wk;
772
773 struct net_device *dev;
774 struct ieee80211_local *local;
775
776 unsigned int flags;
777
778 unsigned long state;
779
780 int drop_unencrypted;
781
782 char name[IFNAMSIZ];
783
784 /* Fragment table for host-based reassembly */
785 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
786 unsigned int fragment_next;
787
788 /* TID bitmap for NoAck policy */
789 u16 noack_map;
790
791 /* bit field of ACM bits (BIT(802.1D tag)) */
792 u8 wmm_acm;
793
794 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
795 struct ieee80211_key __rcu *default_unicast_key;
796 struct ieee80211_key __rcu *default_multicast_key;
797 struct ieee80211_key __rcu *default_mgmt_key;
798
799 u16 sequence_number;
800 __be16 control_port_protocol;
801 bool control_port_no_encrypt;
802 int encrypt_headroom;
803
804 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
805 struct mac80211_qos_map __rcu *qos_map;
806
807 struct work_struct csa_finalize_work;
808 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
809 struct cfg80211_chan_def csa_chandef;
810
811 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
812 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
813
814 /* context reservation -- protected with chanctx_mtx */
815 struct ieee80211_chanctx *reserved_chanctx;
816 struct cfg80211_chan_def reserved_chandef;
817 bool reserved_radar_required;
818 bool reserved_ready;
819
820 /* used to reconfigure hardware SM PS */
821 struct work_struct recalc_smps;
822
823 struct work_struct work;
824 struct sk_buff_head skb_queue;
825
826 u8 needed_rx_chains;
827 enum ieee80211_smps_mode smps_mode;
828
829 int user_power_level; /* in dBm */
830 int ap_power_level; /* in dBm */
831
832 bool radar_required;
833 struct delayed_work dfs_cac_timer_work;
834
835 /*
836 * AP this belongs to: self in AP mode and
837 * corresponding AP in VLAN mode, NULL for
838 * all others (might be needed later in IBSS)
839 */
840 struct ieee80211_if_ap *bss;
841
842 /* bitmap of allowed (non-MCS) rate indexes for rate control */
843 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
844
845 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
846 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
847
848 union {
849 struct ieee80211_if_ap ap;
850 struct ieee80211_if_wds wds;
851 struct ieee80211_if_vlan vlan;
852 struct ieee80211_if_managed mgd;
853 struct ieee80211_if_ibss ibss;
854 struct ieee80211_if_mesh mesh;
855 u32 mntr_flags;
856 } u;
857
858 #ifdef CONFIG_MAC80211_DEBUGFS
859 struct {
860 struct dentry *subdir_stations;
861 struct dentry *default_unicast_key;
862 struct dentry *default_multicast_key;
863 struct dentry *default_mgmt_key;
864 } debugfs;
865 #endif
866
867 /* must be last, dynamically sized area in this! */
868 struct ieee80211_vif vif;
869 };
870
871 static inline
vif_to_sdata(struct ieee80211_vif * p)872 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
873 {
874 return container_of(p, struct ieee80211_sub_if_data, vif);
875 }
876
sdata_lock(struct ieee80211_sub_if_data * sdata)877 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
878 __acquires(&sdata->wdev.mtx)
879 {
880 mutex_lock(&sdata->wdev.mtx);
881 __acquire(&sdata->wdev.mtx);
882 }
883
sdata_unlock(struct ieee80211_sub_if_data * sdata)884 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
885 __releases(&sdata->wdev.mtx)
886 {
887 mutex_unlock(&sdata->wdev.mtx);
888 __release(&sdata->wdev.mtx);
889 }
890
891 #define sdata_dereference(p, sdata) \
892 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
893
894 static inline void
sdata_assert_lock(struct ieee80211_sub_if_data * sdata)895 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
896 {
897 lockdep_assert_held(&sdata->wdev.mtx);
898 }
899
900 static inline enum ieee80211_band
ieee80211_get_sdata_band(struct ieee80211_sub_if_data * sdata)901 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
902 {
903 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
904 struct ieee80211_chanctx_conf *chanctx_conf;
905
906 rcu_read_lock();
907 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
908 if (!WARN_ON(!chanctx_conf))
909 band = chanctx_conf->def.chan->band;
910 rcu_read_unlock();
911
912 return band;
913 }
914
915 static inline int
ieee80211_chandef_get_shift(struct cfg80211_chan_def * chandef)916 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
917 {
918 switch (chandef->width) {
919 case NL80211_CHAN_WIDTH_5:
920 return 2;
921 case NL80211_CHAN_WIDTH_10:
922 return 1;
923 default:
924 return 0;
925 }
926 }
927
928 static inline int
ieee80211_vif_get_shift(struct ieee80211_vif * vif)929 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
930 {
931 struct ieee80211_chanctx_conf *chanctx_conf;
932 int shift = 0;
933
934 rcu_read_lock();
935 chanctx_conf = rcu_dereference(vif->chanctx_conf);
936 if (chanctx_conf)
937 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
938 rcu_read_unlock();
939
940 return shift;
941 }
942
943 struct ieee80211_rx_agg {
944 u8 addr[ETH_ALEN];
945 u16 tid;
946 };
947
948 enum sdata_queue_type {
949 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
950 IEEE80211_SDATA_QUEUE_AGG_START = 1,
951 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
952 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
953 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
954 };
955
956 enum {
957 IEEE80211_RX_MSG = 1,
958 IEEE80211_TX_STATUS_MSG = 2,
959 };
960
961 enum queue_stop_reason {
962 IEEE80211_QUEUE_STOP_REASON_DRIVER,
963 IEEE80211_QUEUE_STOP_REASON_PS,
964 IEEE80211_QUEUE_STOP_REASON_CSA,
965 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
966 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
967 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
968 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
969 IEEE80211_QUEUE_STOP_REASON_FLUSH,
970 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
971
972 IEEE80211_QUEUE_STOP_REASONS,
973 };
974
975 #ifdef CONFIG_MAC80211_LEDS
976 struct tpt_led_trigger {
977 struct led_trigger trig;
978 char name[32];
979 const struct ieee80211_tpt_blink *blink_table;
980 unsigned int blink_table_len;
981 struct timer_list timer;
982 unsigned long prev_traffic;
983 unsigned long tx_bytes, rx_bytes;
984 unsigned int active, want;
985 bool running;
986 };
987 #endif
988
989 /*
990 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
991 *
992 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
993 * certain latency range (in Milliseconds). Each station that uses these
994 * ranges will have bins to count the amount of frames received in that range.
995 * The user can configure the ranges via debugfs.
996 * If ranges is NULL then Tx latency statistics bins are disabled for all
997 * stations.
998 *
999 * @n_ranges: number of ranges that are taken in account
1000 * @ranges: the ranges that the user requested or NULL if disabled.
1001 */
1002 struct ieee80211_tx_latency_bin_ranges {
1003 int n_ranges;
1004 u32 ranges[];
1005 };
1006
1007 /**
1008 * mac80211 scan flags - currently active scan mode
1009 *
1010 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1011 * well be on the operating channel
1012 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1013 * determine if we are on the operating channel or not
1014 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1015 * channel. This should not interrupt normal traffic.
1016 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1017 * that the scan completed.
1018 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1019 * a scan complete for an aborted scan.
1020 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1021 * cancelled.
1022 */
1023 enum {
1024 SCAN_SW_SCANNING,
1025 SCAN_HW_SCANNING,
1026 SCAN_ONCHANNEL_SCANNING,
1027 SCAN_COMPLETED,
1028 SCAN_ABORTED,
1029 SCAN_HW_CANCELLED,
1030 };
1031
1032 /**
1033 * enum mac80211_scan_state - scan state machine states
1034 *
1035 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1036 * determines if we should keep on scanning or switch back to the
1037 * operating channel
1038 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1039 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1040 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1041 * send out data
1042 * @SCAN_RESUME: Resume the scan and scan the next channel
1043 * @SCAN_ABORT: Abort the scan and go back to operating channel
1044 */
1045 enum mac80211_scan_state {
1046 SCAN_DECISION,
1047 SCAN_SET_CHANNEL,
1048 SCAN_SEND_PROBE,
1049 SCAN_SUSPEND,
1050 SCAN_RESUME,
1051 SCAN_ABORT,
1052 };
1053
1054 struct ieee80211_local {
1055 /* embed the driver visible part.
1056 * don't cast (use the static inlines below), but we keep
1057 * it first anyway so they become a no-op */
1058 struct ieee80211_hw hw;
1059
1060 const struct ieee80211_ops *ops;
1061
1062 /*
1063 * private workqueue to mac80211. mac80211 makes this accessible
1064 * via ieee80211_queue_work()
1065 */
1066 struct workqueue_struct *workqueue;
1067
1068 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1069 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1070 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1071 spinlock_t queue_stop_reason_lock;
1072
1073 int open_count;
1074 int monitors, cooked_mntrs;
1075 /* number of interfaces with corresponding FIF_ flags */
1076 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1077 fif_probe_req;
1078 int probe_req_reg;
1079 unsigned int filter_flags; /* FIF_* */
1080
1081 bool wiphy_ciphers_allocated;
1082
1083 bool use_chanctx;
1084
1085 /* protects the aggregated multicast list and filter calls */
1086 spinlock_t filter_lock;
1087
1088 /* used for uploading changed mc list */
1089 struct work_struct reconfig_filter;
1090
1091 /* aggregated multicast list */
1092 struct netdev_hw_addr_list mc_list;
1093
1094 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1095
1096 /*
1097 * suspended is true if we finished all the suspend _and_ we have
1098 * not yet come up from resume. This is to be used by mac80211
1099 * to ensure driver sanity during suspend and mac80211's own
1100 * sanity. It can eventually be used for WoW as well.
1101 */
1102 bool suspended;
1103
1104 /*
1105 * Resuming is true while suspended, but when we're reprogramming the
1106 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1107 * again even though some other parts of the stack are still suspended
1108 * and we still drop received frames to avoid waking the stack.
1109 */
1110 bool resuming;
1111
1112 /*
1113 * quiescing is true during the suspend process _only_ to
1114 * ease timer cancelling etc.
1115 */
1116 bool quiescing;
1117
1118 /* device is started */
1119 bool started;
1120
1121 /* device is during a HW reconfig */
1122 bool in_reconfig;
1123
1124 /* wowlan is enabled -- don't reconfig on resume */
1125 bool wowlan;
1126
1127 /* DFS/radar detection is enabled */
1128 bool radar_detect_enabled;
1129 struct work_struct radar_detected_work;
1130
1131 /* number of RX chains the hardware has */
1132 u8 rx_chains;
1133
1134 int tx_headroom; /* required headroom for hardware/radiotap */
1135
1136 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1137 * added to skb_queue will be processed, but frames in
1138 * skb_queue_unreliable may be dropped if the total length of these
1139 * queues increases over the limit. */
1140 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1141 struct tasklet_struct tasklet;
1142 struct sk_buff_head skb_queue;
1143 struct sk_buff_head skb_queue_unreliable;
1144
1145 spinlock_t rx_path_lock;
1146
1147 /* Station data */
1148 /*
1149 * The mutex only protects the list, hash table and
1150 * counter, reads are done with RCU.
1151 */
1152 struct mutex sta_mtx;
1153 spinlock_t tim_lock;
1154 unsigned long num_sta;
1155 struct list_head sta_list;
1156 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1157 struct timer_list sta_cleanup;
1158 int sta_generation;
1159
1160 /*
1161 * Tx latency statistics parameters for all stations.
1162 * Can enable via debugfs (NULL when disabled).
1163 */
1164 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1165
1166 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1167 struct tasklet_struct tx_pending_tasklet;
1168
1169 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1170
1171 /* number of interfaces with corresponding IFF_ flags */
1172 atomic_t iff_allmultis, iff_promiscs;
1173
1174 struct rate_control_ref *rate_ctrl;
1175
1176 struct crypto_cipher *wep_tx_tfm;
1177 struct crypto_cipher *wep_rx_tfm;
1178 u32 wep_iv;
1179
1180 /* see iface.c */
1181 struct list_head interfaces;
1182 struct mutex iflist_mtx;
1183
1184 /*
1185 * Key mutex, protects sdata's key_list and sta_info's
1186 * key pointers (write access, they're RCU.)
1187 */
1188 struct mutex key_mtx;
1189
1190 /* mutex for scan and work locking */
1191 struct mutex mtx;
1192
1193 /* Scanning and BSS list */
1194 unsigned long scanning;
1195 struct cfg80211_ssid scan_ssid;
1196 struct cfg80211_scan_request *int_scan_req;
1197 struct cfg80211_scan_request *scan_req;
1198 struct ieee80211_scan_request *hw_scan_req;
1199 struct cfg80211_chan_def scan_chandef;
1200 enum ieee80211_band hw_scan_band;
1201 int scan_channel_idx;
1202 int scan_ies_len;
1203 int hw_scan_ies_bufsize;
1204
1205 struct work_struct sched_scan_stopped_work;
1206 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1207 struct cfg80211_sched_scan_request *sched_scan_req;
1208
1209 unsigned long leave_oper_channel_time;
1210 enum mac80211_scan_state next_scan_state;
1211 struct delayed_work scan_work;
1212 struct ieee80211_sub_if_data __rcu *scan_sdata;
1213 /* For backward compatibility only -- do not use */
1214 struct cfg80211_chan_def _oper_chandef;
1215
1216 /* Temporary remain-on-channel for off-channel operations */
1217 struct ieee80211_channel *tmp_channel;
1218
1219 /* channel contexts */
1220 struct list_head chanctx_list;
1221 struct mutex chanctx_mtx;
1222
1223 /* SNMP counters */
1224 /* dot11CountersTable */
1225 u32 dot11TransmittedFragmentCount;
1226 u32 dot11MulticastTransmittedFrameCount;
1227 u32 dot11FailedCount;
1228 u32 dot11RetryCount;
1229 u32 dot11MultipleRetryCount;
1230 u32 dot11FrameDuplicateCount;
1231 u32 dot11ReceivedFragmentCount;
1232 u32 dot11MulticastReceivedFrameCount;
1233 u32 dot11TransmittedFrameCount;
1234
1235 #ifdef CONFIG_MAC80211_LEDS
1236 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1237 struct tpt_led_trigger *tpt_led_trigger;
1238 char tx_led_name[32], rx_led_name[32],
1239 assoc_led_name[32], radio_led_name[32];
1240 #endif
1241
1242 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1243 /* TX/RX handler statistics */
1244 unsigned int tx_handlers_drop;
1245 unsigned int tx_handlers_queued;
1246 unsigned int tx_handlers_drop_unencrypted;
1247 unsigned int tx_handlers_drop_fragment;
1248 unsigned int tx_handlers_drop_wep;
1249 unsigned int tx_handlers_drop_not_assoc;
1250 unsigned int tx_handlers_drop_unauth_port;
1251 unsigned int rx_handlers_drop;
1252 unsigned int rx_handlers_queued;
1253 unsigned int rx_handlers_drop_nullfunc;
1254 unsigned int rx_handlers_drop_defrag;
1255 unsigned int rx_handlers_drop_short;
1256 unsigned int tx_expand_skb_head;
1257 unsigned int tx_expand_skb_head_cloned;
1258 unsigned int rx_expand_skb_head;
1259 unsigned int rx_expand_skb_head2;
1260 unsigned int rx_handlers_fragments;
1261 unsigned int tx_status_drop;
1262 #define I802_DEBUG_INC(c) (c)++
1263 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1264 #define I802_DEBUG_INC(c) do { } while (0)
1265 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1266
1267
1268 int total_ps_buffered; /* total number of all buffered unicast and
1269 * multicast packets for power saving stations
1270 */
1271
1272 bool pspolling;
1273 bool offchannel_ps_enabled;
1274 /*
1275 * PS can only be enabled when we have exactly one managed
1276 * interface (and monitors) in PS, this then points there.
1277 */
1278 struct ieee80211_sub_if_data *ps_sdata;
1279 struct work_struct dynamic_ps_enable_work;
1280 struct work_struct dynamic_ps_disable_work;
1281 struct timer_list dynamic_ps_timer;
1282 struct notifier_block network_latency_notifier;
1283 struct notifier_block ifa_notifier;
1284 struct notifier_block ifa6_notifier;
1285
1286 /*
1287 * The dynamic ps timeout configured from user space via WEXT -
1288 * this will override whatever chosen by mac80211 internally.
1289 */
1290 int dynamic_ps_forced_timeout;
1291
1292 int user_power_level; /* in dBm, for all interfaces */
1293
1294 enum ieee80211_smps_mode smps_mode;
1295
1296 struct work_struct restart_work;
1297
1298 #ifdef CONFIG_MAC80211_DEBUGFS
1299 struct local_debugfsdentries {
1300 struct dentry *rcdir;
1301 struct dentry *keys;
1302 } debugfs;
1303 #endif
1304
1305 /*
1306 * Remain-on-channel support
1307 */
1308 struct list_head roc_list;
1309 struct work_struct hw_roc_start, hw_roc_done;
1310 unsigned long hw_roc_start_time;
1311 u64 roc_cookie_counter;
1312
1313 struct idr ack_status_frames;
1314 spinlock_t ack_status_lock;
1315
1316 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1317
1318 struct napi_struct *napi;
1319
1320 /* virtual monitor interface */
1321 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1322 struct cfg80211_chan_def monitor_chandef;
1323 };
1324
1325 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1326 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1327 {
1328 return netdev_priv(dev);
1329 }
1330
1331 static inline struct ieee80211_sub_if_data *
IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev * wdev)1332 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1333 {
1334 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1335 }
1336
1337 /* this struct represents 802.11n's RA/TID combination */
1338 struct ieee80211_ra_tid {
1339 u8 ra[ETH_ALEN];
1340 u16 tid;
1341 };
1342
1343 /* this struct holds the value parsing from channel switch IE */
1344 struct ieee80211_csa_ie {
1345 struct cfg80211_chan_def chandef;
1346 u8 mode;
1347 u8 count;
1348 u8 ttl;
1349 u16 pre_value;
1350 };
1351
1352 /* Parsed Information Elements */
1353 struct ieee802_11_elems {
1354 const u8 *ie_start;
1355 size_t total_len;
1356
1357 /* pointers to IEs */
1358 const u8 *ssid;
1359 const u8 *supp_rates;
1360 const u8 *ds_params;
1361 const struct ieee80211_tim_ie *tim;
1362 const u8 *challenge;
1363 const u8 *rsn;
1364 const u8 *erp_info;
1365 const u8 *ext_supp_rates;
1366 const u8 *wmm_info;
1367 const u8 *wmm_param;
1368 const struct ieee80211_ht_cap *ht_cap_elem;
1369 const struct ieee80211_ht_operation *ht_operation;
1370 const struct ieee80211_vht_cap *vht_cap_elem;
1371 const struct ieee80211_vht_operation *vht_operation;
1372 const struct ieee80211_meshconf_ie *mesh_config;
1373 const u8 *mesh_id;
1374 const u8 *peering;
1375 const __le16 *awake_window;
1376 const u8 *preq;
1377 const u8 *prep;
1378 const u8 *perr;
1379 const struct ieee80211_rann_ie *rann;
1380 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1381 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1382 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1383 const u8 *country_elem;
1384 const u8 *pwr_constr_elem;
1385 const u8 *cisco_dtpc_elem;
1386 const struct ieee80211_timeout_interval_ie *timeout_int;
1387 const u8 *opmode_notif;
1388 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1389 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1390
1391 /* length of them, respectively */
1392 u8 ssid_len;
1393 u8 supp_rates_len;
1394 u8 tim_len;
1395 u8 challenge_len;
1396 u8 rsn_len;
1397 u8 ext_supp_rates_len;
1398 u8 wmm_info_len;
1399 u8 wmm_param_len;
1400 u8 mesh_id_len;
1401 u8 peering_len;
1402 u8 preq_len;
1403 u8 prep_len;
1404 u8 perr_len;
1405 u8 country_elem_len;
1406
1407 /* whether a parse error occurred while retrieving these elements */
1408 bool parse_error;
1409 };
1410
hw_to_local(struct ieee80211_hw * hw)1411 static inline struct ieee80211_local *hw_to_local(
1412 struct ieee80211_hw *hw)
1413 {
1414 return container_of(hw, struct ieee80211_local, hw);
1415 }
1416
1417
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1418 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1419 {
1420 return ether_addr_equal(raddr, addr) ||
1421 is_broadcast_ether_addr(raddr);
1422 }
1423
1424 static inline bool
ieee80211_have_rx_timestamp(struct ieee80211_rx_status * status)1425 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1426 {
1427 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1428 status->flag & RX_FLAG_MACTIME_END);
1429 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1430 }
1431
1432 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1433 struct ieee80211_rx_status *status,
1434 unsigned int mpdu_len,
1435 unsigned int mpdu_offset);
1436 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1437 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1438 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1439 u32 changed);
1440 void ieee80211_configure_filter(struct ieee80211_local *local);
1441 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1442
1443 /* STA code */
1444 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1445 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1446 struct cfg80211_auth_request *req);
1447 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1448 struct cfg80211_assoc_request *req);
1449 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1450 struct cfg80211_deauth_request *req);
1451 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1452 struct cfg80211_disassoc_request *req);
1453 void ieee80211_send_pspoll(struct ieee80211_local *local,
1454 struct ieee80211_sub_if_data *sdata);
1455 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1456 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1457 int ieee80211_max_network_latency(struct notifier_block *nb,
1458 unsigned long data, void *dummy);
1459 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1460 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1461 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1462 struct sk_buff *skb);
1463 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1464 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1465 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1466 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1467 __le16 fc, bool acked);
1468 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1469 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1470
1471 /* IBSS code */
1472 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1473 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1474 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1475 const u8 *bssid, const u8 *addr, u32 supp_rates);
1476 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1477 struct cfg80211_ibss_params *params);
1478 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1479 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1480 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1481 struct sk_buff *skb);
1482 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1483 struct cfg80211_csa_settings *csa_settings);
1484 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1485 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1486
1487 /* mesh code */
1488 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1489 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1490 struct sk_buff *skb);
1491 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1492 struct cfg80211_csa_settings *csa_settings);
1493 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1494
1495 /* scan/BSS handling */
1496 void ieee80211_scan_work(struct work_struct *work);
1497 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1498 const u8 *ssid, u8 ssid_len,
1499 struct ieee80211_channel *chan,
1500 enum nl80211_bss_scan_width scan_width);
1501 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1502 struct cfg80211_scan_request *req);
1503 void ieee80211_scan_cancel(struct ieee80211_local *local);
1504 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1505 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1506
1507 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1508 struct ieee80211_bss *
1509 ieee80211_bss_info_update(struct ieee80211_local *local,
1510 struct ieee80211_rx_status *rx_status,
1511 struct ieee80211_mgmt *mgmt,
1512 size_t len,
1513 struct ieee802_11_elems *elems,
1514 struct ieee80211_channel *channel);
1515 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1516 struct ieee80211_bss *bss);
1517
1518 /* scheduled scan handling */
1519 int
1520 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1521 struct cfg80211_sched_scan_request *req);
1522 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1523 struct cfg80211_sched_scan_request *req);
1524 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1525 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1526 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1527
1528 /* off-channel helpers */
1529 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1530 void ieee80211_offchannel_return(struct ieee80211_local *local);
1531 void ieee80211_roc_setup(struct ieee80211_local *local);
1532 void ieee80211_start_next_roc(struct ieee80211_local *local);
1533 void ieee80211_roc_purge(struct ieee80211_local *local,
1534 struct ieee80211_sub_if_data *sdata);
1535 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1536 void ieee80211_sw_roc_work(struct work_struct *work);
1537 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1538
1539 /* channel switch handling */
1540 void ieee80211_csa_finalize_work(struct work_struct *work);
1541 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1542 struct cfg80211_csa_settings *params);
1543
1544 /* interface handling */
1545 int ieee80211_iface_init(void);
1546 void ieee80211_iface_exit(void);
1547 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1548 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1549 struct vif_params *params);
1550 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1551 enum nl80211_iftype type);
1552 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1553 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1554 u32 ieee80211_idle_off(struct ieee80211_local *local);
1555 void ieee80211_recalc_idle(struct ieee80211_local *local);
1556 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1557 const int offset);
1558 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1559 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1560 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1561 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1562
1563 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1564 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1565
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1566 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1567 {
1568 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1569 }
1570
1571 /* tx handling */
1572 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1573 void ieee80211_tx_pending(unsigned long data);
1574 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1575 struct net_device *dev);
1576 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1577 struct net_device *dev);
1578 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1579 struct sk_buff_head *skbs);
1580
1581 /* HT */
1582 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1583 struct ieee80211_sta_ht_cap *ht_cap);
1584 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1585 struct ieee80211_supported_band *sband,
1586 const struct ieee80211_ht_cap *ht_cap_ie,
1587 struct sta_info *sta);
1588 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1589 const u8 *da, u16 tid,
1590 u16 initiator, u16 reason_code);
1591 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1592 enum ieee80211_smps_mode smps, const u8 *da,
1593 const u8 *bssid);
1594 void ieee80211_request_smps_ap_work(struct work_struct *work);
1595 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1596 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1597 enum ieee80211_smps_mode smps_mode_new);
1598
1599 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1600 u16 initiator, u16 reason, bool stop);
1601 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1602 u16 initiator, u16 reason, bool stop);
1603 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1604 u8 dialog_token, u16 timeout,
1605 u16 start_seq_num, u16 ba_policy, u16 tid,
1606 u16 buf_size, bool tx, bool auto_seq);
1607 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1608 enum ieee80211_agg_stop_reason reason);
1609 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1610 struct sta_info *sta,
1611 struct ieee80211_mgmt *mgmt, size_t len);
1612 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1613 struct sta_info *sta,
1614 struct ieee80211_mgmt *mgmt,
1615 size_t len);
1616 void ieee80211_process_addba_request(struct ieee80211_local *local,
1617 struct sta_info *sta,
1618 struct ieee80211_mgmt *mgmt,
1619 size_t len);
1620
1621 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1622 enum ieee80211_agg_stop_reason reason);
1623 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1624 enum ieee80211_agg_stop_reason reason);
1625 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1626 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1627 void ieee80211_ba_session_work(struct work_struct *work);
1628 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1629 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1630
1631 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1632
1633 /* VHT */
1634 void
1635 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1636 struct ieee80211_supported_band *sband,
1637 const struct ieee80211_vht_cap *vht_cap_ie,
1638 struct sta_info *sta);
1639 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1640 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1641 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1642 struct sta_info *sta, u8 opmode,
1643 enum ieee80211_band band, bool nss_only);
1644 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1645 struct sta_info *sta, u8 opmode,
1646 enum ieee80211_band band, bool nss_only);
1647 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1648 struct ieee80211_sta_vht_cap *vht_cap);
1649
1650 /* Spectrum management */
1651 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1652 struct ieee80211_mgmt *mgmt,
1653 size_t len);
1654 /**
1655 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1656 * @sdata: the sdata of the interface which has received the frame
1657 * @elems: parsed 802.11 elements received with the frame
1658 * @current_band: indicates the current band
1659 * @sta_flags: contains information about own capabilities and restrictions
1660 * to decide which channel switch announcements can be accepted. Only the
1661 * following subset of &enum ieee80211_sta_flags are evaluated:
1662 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1663 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1664 * %IEEE80211_STA_DISABLE_160MHZ.
1665 * @bssid: the currently connected bssid (for reporting)
1666 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1667 All of them will be filled with if success only.
1668 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1669 */
1670 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1671 struct ieee802_11_elems *elems,
1672 enum ieee80211_band current_band,
1673 u32 sta_flags, u8 *bssid,
1674 struct ieee80211_csa_ie *csa_ie);
1675
1676 /* Suspend/resume and hw reconfiguration */
1677 int ieee80211_reconfig(struct ieee80211_local *local);
1678 void ieee80211_stop_device(struct ieee80211_local *local);
1679
1680 int __ieee80211_suspend(struct ieee80211_hw *hw,
1681 struct cfg80211_wowlan *wowlan);
1682
__ieee80211_resume(struct ieee80211_hw * hw)1683 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1684 {
1685 struct ieee80211_local *local = hw_to_local(hw);
1686
1687 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1688 "%s: resume with hardware scan still in progress\n",
1689 wiphy_name(hw->wiphy));
1690
1691 return ieee80211_reconfig(hw_to_local(hw));
1692 }
1693
1694 /* utility functions/constants */
1695 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1696 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1697 enum nl80211_iftype type);
1698 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1699 int rate, int erp, int short_preamble,
1700 int shift);
1701 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1702 struct ieee80211_hdr *hdr, const u8 *tsc,
1703 gfp_t gfp);
1704 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1705 bool bss_notify);
1706 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1707 enum ieee80211_band band);
1708
1709 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1710 struct sk_buff *skb, int tid,
1711 enum ieee80211_band band);
1712
1713 static inline void
ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid,enum ieee80211_band band)1714 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1715 struct sk_buff *skb, int tid,
1716 enum ieee80211_band band)
1717 {
1718 rcu_read_lock();
1719 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1720 rcu_read_unlock();
1721 }
1722
ieee80211_tx_skb_tid(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb,int tid)1723 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1724 struct sk_buff *skb, int tid)
1725 {
1726 struct ieee80211_chanctx_conf *chanctx_conf;
1727
1728 rcu_read_lock();
1729 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1730 if (WARN_ON(!chanctx_conf)) {
1731 rcu_read_unlock();
1732 kfree_skb(skb);
1733 return;
1734 }
1735
1736 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1737 chanctx_conf->def.chan->band);
1738 rcu_read_unlock();
1739 }
1740
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1741 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1742 struct sk_buff *skb)
1743 {
1744 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1745 ieee80211_tx_skb_tid(sdata, skb, 7);
1746 }
1747
1748 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1749 struct ieee802_11_elems *elems,
1750 u64 filter, u32 crc);
ieee802_11_parse_elems(const u8 * start,size_t len,bool action,struct ieee802_11_elems * elems)1751 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1752 bool action,
1753 struct ieee802_11_elems *elems)
1754 {
1755 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1756 }
1757
ieee80211_rx_reorder_ready(struct sk_buff_head * frames)1758 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
1759 {
1760 struct sk_buff *tail = skb_peek_tail(frames);
1761 struct ieee80211_rx_status *status;
1762
1763 if (!tail)
1764 return false;
1765
1766 status = IEEE80211_SKB_RXCB(tail);
1767 if (status->flag & RX_FLAG_AMSDU_MORE)
1768 return false;
1769
1770 return true;
1771 }
1772
1773 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1774 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1775 void ieee80211_dynamic_ps_timer(unsigned long data);
1776 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1777 struct ieee80211_sub_if_data *sdata,
1778 int powersave);
1779 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1780 struct ieee80211_hdr *hdr);
1781 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1782 struct ieee80211_hdr *hdr, bool ack);
1783
1784 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1785 unsigned long queues,
1786 enum queue_stop_reason reason,
1787 bool refcounted);
1788 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1789 struct ieee80211_sub_if_data *sdata,
1790 enum queue_stop_reason reason);
1791 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1792 struct ieee80211_sub_if_data *sdata,
1793 enum queue_stop_reason reason);
1794 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1795 unsigned long queues,
1796 enum queue_stop_reason reason,
1797 bool refcounted);
1798 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1799 enum queue_stop_reason reason,
1800 bool refcounted);
1801 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1802 enum queue_stop_reason reason,
1803 bool refcounted);
1804 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1805 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1806 struct sk_buff *skb);
1807 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1808 struct sk_buff_head *skbs);
1809 void ieee80211_flush_queues(struct ieee80211_local *local,
1810 struct ieee80211_sub_if_data *sdata);
1811
1812 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1813 u16 transaction, u16 auth_alg, u16 status,
1814 const u8 *extra, size_t extra_len, const u8 *bssid,
1815 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1816 u32 tx_flags);
1817 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1818 const u8 *bssid, u16 stype, u16 reason,
1819 bool send_frame, u8 *frame_buf);
1820 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1821 size_t buffer_len,
1822 struct ieee80211_scan_ies *ie_desc,
1823 const u8 *ie, size_t ie_len,
1824 u8 bands_used, u32 *rate_masks,
1825 struct cfg80211_chan_def *chandef);
1826 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1827 u8 *dst, u32 ratemask,
1828 struct ieee80211_channel *chan,
1829 const u8 *ssid, size_t ssid_len,
1830 const u8 *ie, size_t ie_len,
1831 bool directed);
1832 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1833 const u8 *ssid, size_t ssid_len,
1834 const u8 *ie, size_t ie_len,
1835 u32 ratemask, bool directed, u32 tx_flags,
1836 struct ieee80211_channel *channel, bool scan);
1837
1838 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1839 struct ieee802_11_elems *elems,
1840 enum ieee80211_band band, u32 *basic_rates);
1841 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1842 enum ieee80211_smps_mode smps_mode);
1843 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1844 enum ieee80211_smps_mode smps_mode);
1845 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1846 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1847
1848 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1849 const u8 *ids, int n_ids, size_t offset);
1850 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1851 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1852 u16 cap);
1853 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1854 const struct cfg80211_chan_def *chandef,
1855 u16 prot_mode);
1856 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1857 u32 cap);
1858 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1859 const struct ieee80211_supported_band *sband,
1860 const u8 *srates, int srates_len, u32 *rates);
1861 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1862 struct sk_buff *skb, bool need_basic,
1863 enum ieee80211_band band);
1864 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1865 struct sk_buff *skb, bool need_basic,
1866 enum ieee80211_band band);
1867 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
1868
1869 /* channel management */
1870 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1871 const struct ieee80211_ht_operation *ht_oper,
1872 struct cfg80211_chan_def *chandef);
1873 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1874
1875 int __must_check
1876 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1877 const struct cfg80211_chan_def *chandef,
1878 enum ieee80211_chanctx_mode mode);
1879 int __must_check
1880 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1881 const struct cfg80211_chan_def *chandef,
1882 enum ieee80211_chanctx_mode mode,
1883 bool radar_required);
1884 int __must_check
1885 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
1886 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1887
1888 int __must_check
1889 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1890 const struct cfg80211_chan_def *chandef,
1891 u32 *changed);
1892 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1893 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1894 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1895 bool clear);
1896 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1897 struct ieee80211_chanctx *ctx);
1898
1899 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1900 struct ieee80211_chanctx *chanctx);
1901 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1902 struct ieee80211_chanctx *ctx);
1903
1904 void ieee80211_dfs_cac_timer(unsigned long data);
1905 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1906 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1907 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1908 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1909 struct cfg80211_csa_settings *csa_settings);
1910
1911 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1912 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1913 const struct ieee80211_cipher_scheme *
1914 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1915 enum nl80211_iftype iftype);
1916 int ieee80211_cs_headroom(struct ieee80211_local *local,
1917 struct cfg80211_crypto_settings *crypto,
1918 enum nl80211_iftype iftype);
1919 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1920 struct ieee80211_sub_if_data *sdata);
1921 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1922 const struct cfg80211_chan_def *chandef,
1923 enum ieee80211_chanctx_mode chanmode,
1924 u8 radar_detect);
1925 int ieee80211_max_num_channels(struct ieee80211_local *local);
1926
1927 /* TDLS */
1928 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1929 const u8 *peer, u8 action_code, u8 dialog_token,
1930 u16 status_code, u32 peer_capability,
1931 bool initiator, const u8 *extra_ies,
1932 size_t extra_ies_len);
1933 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1934 const u8 *peer, enum nl80211_tdls_operation oper);
1935 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
1936
1937 extern const struct ethtool_ops ieee80211_ethtool_ops;
1938
1939 #ifdef CONFIG_MAC80211_NOINLINE
1940 #define debug_noinline noinline
1941 #else
1942 #define debug_noinline
1943 #endif
1944
1945 #endif /* IEEE80211_I_H */
1946