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
34 struct ieee80211_local;
35
36 /* Maximum number of broadcast/multicast frames to buffer when some of the
37 * associated stations are using power saving. */
38 #define AP_MAX_BC_BUFFER 128
39
40 /* Maximum number of frames buffered to all STAs, including multicast frames.
41 * Note: increasing this limit increases the potential memory requirement. Each
42 * frame can be up to about 2 kB long. */
43 #define TOTAL_MAX_TX_BUFFER 512
44
45 /* Required encryption head and tailroom */
46 #define IEEE80211_ENCRYPT_HEADROOM 8
47 #define IEEE80211_ENCRYPT_TAILROOM 18
48
49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
50 * reception of at least three fragmented frames. This limit can be increased
51 * by changing this define, at the cost of slower frame reassembly and
52 * increased memory use (about 2 kB of RAM per entry). */
53 #define IEEE80211_FRAGMENT_MAX 4
54
55 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
56
57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
58 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
59 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
61 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
62
63 #define IEEE80211_DEFAULT_MAX_SP_LEN \
64 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
65
66 struct ieee80211_fragment_entry {
67 unsigned long first_frag_time;
68 unsigned int seq;
69 unsigned int rx_queue;
70 unsigned int last_frag;
71 unsigned int extra_len;
72 struct sk_buff_head skb_list;
73 int ccmp; /* Whether fragments were encrypted with CCMP */
74 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
75 };
76
77
78 struct ieee80211_bss {
79 /* don't want to look up all the time */
80 size_t ssid_len;
81 u8 ssid[IEEE80211_MAX_SSID_LEN];
82
83 u8 dtim_period;
84
85 bool wmm_used;
86 bool uapsd_supported;
87
88 unsigned long last_probe_resp;
89
90 #ifdef CONFIG_MAC80211_MESH
91 u8 *mesh_id;
92 size_t mesh_id_len;
93 u8 *mesh_cfg;
94 #endif
95
96 #define IEEE80211_MAX_SUPP_RATES 32
97 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
98 size_t supp_rates_len;
99
100 /*
101 * During association, we save an ERP value from a probe response so
102 * that we can feed ERP info to the driver when handling the
103 * association completes. these fields probably won't be up-to-date
104 * otherwise, you probably don't want to use them.
105 */
106 bool has_erp_value;
107 u8 erp_value;
108
109 /* Keep track of the corruption of the last beacon/probe response. */
110 u8 corrupt_data;
111
112 /* Keep track of what bits of information we have valid info for. */
113 u8 valid_data;
114 };
115
116 /**
117 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
118 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
119 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
120 *
121 * These are bss flags that are attached to a bss in the
122 * @corrupt_data field of &struct ieee80211_bss.
123 */
124 enum ieee80211_bss_corrupt_data_flags {
125 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
126 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
127 };
128
129 /**
130 * enum ieee80211_valid_data_flags - BSS valid data flags
131 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
132 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
133 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
134 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
135 *
136 * These are bss flags that are attached to a bss in the
137 * @valid_data field of &struct ieee80211_bss. They show which parts
138 * of the data structure were recieved as a result of an un-corrupted
139 * beacon/probe response.
140 */
141 enum ieee80211_bss_valid_data_flags {
142 IEEE80211_BSS_VALID_DTIM = BIT(0),
143 IEEE80211_BSS_VALID_WMM = BIT(1),
144 IEEE80211_BSS_VALID_RATES = BIT(2),
145 IEEE80211_BSS_VALID_ERP = BIT(3)
146 };
147
bss_mesh_cfg(struct ieee80211_bss * bss)148 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
149 {
150 #ifdef CONFIG_MAC80211_MESH
151 return bss->mesh_cfg;
152 #endif
153 return NULL;
154 }
155
bss_mesh_id(struct ieee80211_bss * bss)156 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
157 {
158 #ifdef CONFIG_MAC80211_MESH
159 return bss->mesh_id;
160 #endif
161 return NULL;
162 }
163
bss_mesh_id_len(struct ieee80211_bss * bss)164 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
165 {
166 #ifdef CONFIG_MAC80211_MESH
167 return bss->mesh_id_len;
168 #endif
169 return 0;
170 }
171
172
173 typedef unsigned __bitwise__ ieee80211_tx_result;
174 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
175 #define TX_DROP ((__force ieee80211_tx_result) 1u)
176 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
177
178 #define IEEE80211_TX_UNICAST BIT(1)
179 #define IEEE80211_TX_PS_BUFFERED BIT(2)
180
181 struct ieee80211_tx_data {
182 struct sk_buff *skb;
183 struct sk_buff_head skbs;
184 struct ieee80211_local *local;
185 struct ieee80211_sub_if_data *sdata;
186 struct sta_info *sta;
187 struct ieee80211_key *key;
188
189 struct ieee80211_channel *channel;
190
191 unsigned int flags;
192 };
193
194
195 typedef unsigned __bitwise__ ieee80211_rx_result;
196 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
197 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
198 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
199 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
200
201 /**
202 * enum ieee80211_packet_rx_flags - packet RX flags
203 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
204 * (incl. multicast frames)
205 * @IEEE80211_RX_IN_SCAN: received while scanning
206 * @IEEE80211_RX_FRAGMENTED: fragmented frame
207 * @IEEE80211_RX_AMSDU: a-MSDU packet
208 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
209 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
210 *
211 * These are per-frame flags that are attached to a frame in the
212 * @rx_flags field of &struct ieee80211_rx_status.
213 */
214 enum ieee80211_packet_rx_flags {
215 IEEE80211_RX_IN_SCAN = BIT(0),
216 IEEE80211_RX_RA_MATCH = BIT(1),
217 IEEE80211_RX_FRAGMENTED = BIT(2),
218 IEEE80211_RX_AMSDU = BIT(3),
219 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
220 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
221 };
222
223 /**
224 * enum ieee80211_rx_flags - RX data flags
225 *
226 * @IEEE80211_RX_CMNTR: received on cooked monitor already
227 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
228 * to cfg80211_report_obss_beacon().
229 *
230 * These flags are used across handling multiple interfaces
231 * for a single frame.
232 */
233 enum ieee80211_rx_flags {
234 IEEE80211_RX_CMNTR = BIT(0),
235 IEEE80211_RX_BEACON_REPORTED = BIT(1),
236 };
237
238 struct ieee80211_rx_data {
239 struct sk_buff *skb;
240 struct ieee80211_local *local;
241 struct ieee80211_sub_if_data *sdata;
242 struct sta_info *sta;
243 struct ieee80211_key *key;
244
245 unsigned int flags;
246
247 /*
248 * Index into sequence numbers array, 0..16
249 * since the last (16) is used for non-QoS,
250 * will be 16 on non-QoS frames.
251 */
252 int seqno_idx;
253
254 /*
255 * Index into the security IV/PN arrays, 0..16
256 * since the last (16) is used for CCMP-encrypted
257 * management frames, will be set to 16 on mgmt
258 * frames and 0 on non-QoS frames.
259 */
260 int security_idx;
261
262 u32 tkip_iv32;
263 u16 tkip_iv16;
264 };
265
266 struct beacon_data {
267 u8 *head, *tail;
268 int head_len, tail_len;
269 struct rcu_head rcu_head;
270 };
271
272 struct ieee80211_if_ap {
273 struct beacon_data __rcu *beacon;
274 struct sk_buff __rcu *probe_resp;
275
276 struct list_head vlans;
277
278 /* yes, this looks ugly, but guarantees that we can later use
279 * bitmap_empty :)
280 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
281 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
282 struct sk_buff_head ps_bc_buf;
283 atomic_t num_sta_ps; /* number of stations in PS mode */
284 atomic_t num_sta_authorized; /* number of authorized stations */
285 int dtim_count;
286 bool dtim_bc_mc;
287 };
288
289 struct ieee80211_if_wds {
290 struct sta_info *sta;
291 u8 remote_addr[ETH_ALEN];
292 };
293
294 struct ieee80211_if_vlan {
295 struct list_head list;
296
297 /* used for all tx if the VLAN is configured to 4-addr mode */
298 struct sta_info __rcu *sta;
299 };
300
301 struct mesh_stats {
302 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
303 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
304 __u32 fwded_frames; /* Mesh total forwarded frames */
305 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
306 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
307 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
308 atomic_t estab_plinks;
309 };
310
311 #define PREQ_Q_F_START 0x1
312 #define PREQ_Q_F_REFRESH 0x2
313 struct mesh_preq_queue {
314 struct list_head list;
315 u8 dst[ETH_ALEN];
316 u8 flags;
317 };
318
319 enum ieee80211_work_type {
320 IEEE80211_WORK_ABORT,
321 IEEE80211_WORK_REMAIN_ON_CHANNEL,
322 IEEE80211_WORK_OFFCHANNEL_TX,
323 };
324
325 /**
326 * enum work_done_result - indicates what to do after work was done
327 *
328 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
329 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
330 * should be requeued.
331 */
332 enum work_done_result {
333 WORK_DONE_DESTROY,
334 WORK_DONE_REQUEUE,
335 };
336
337 struct ieee80211_work {
338 struct list_head list;
339
340 struct rcu_head rcu_head;
341
342 struct ieee80211_sub_if_data *sdata;
343
344 enum work_done_result (*done)(struct ieee80211_work *wk,
345 struct sk_buff *skb);
346
347 struct ieee80211_channel *chan;
348 enum nl80211_channel_type chan_type;
349
350 unsigned long timeout;
351 enum ieee80211_work_type type;
352
353 bool started;
354
355 union {
356 struct {
357 u32 duration;
358 } remain;
359 struct {
360 struct sk_buff *frame;
361 u32 wait;
362 bool status;
363 } offchan_tx;
364 };
365
366 size_t data_len;
367 u8 data[];
368 };
369
370 /* flags used in struct ieee80211_if_managed.flags */
371 enum ieee80211_sta_flags {
372 IEEE80211_STA_BEACON_POLL = BIT(0),
373 IEEE80211_STA_CONNECTION_POLL = BIT(1),
374 IEEE80211_STA_CONTROL_PORT = BIT(2),
375 IEEE80211_STA_DISABLE_11N = BIT(4),
376 IEEE80211_STA_CSA_RECEIVED = BIT(5),
377 IEEE80211_STA_MFP_ENABLED = BIT(6),
378 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
379 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
380 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
381 };
382
383 struct ieee80211_mgd_auth_data {
384 struct cfg80211_bss *bss;
385 unsigned long timeout;
386 int tries;
387 u16 algorithm, expected_transaction;
388
389 u8 key[WLAN_KEY_LEN_WEP104];
390 u8 key_len, key_idx;
391 bool done;
392
393 size_t ie_len;
394 u8 ie[];
395 };
396
397 struct ieee80211_mgd_assoc_data {
398 struct cfg80211_bss *bss;
399 const u8 *supp_rates;
400 const u8 *ht_information_ie;
401
402 unsigned long timeout;
403 int tries;
404
405 u16 capability;
406 u8 prev_bssid[ETH_ALEN];
407 u8 ssid[IEEE80211_MAX_SSID_LEN];
408 u8 ssid_len;
409 u8 supp_rates_len;
410 bool wmm, uapsd;
411 bool have_beacon;
412 bool sent_assoc;
413 bool synced;
414
415 size_t ie_len;
416 u8 ie[];
417 };
418
419 struct ieee80211_if_managed {
420 struct timer_list timer;
421 struct timer_list conn_mon_timer;
422 struct timer_list bcn_mon_timer;
423 struct timer_list chswitch_timer;
424 struct work_struct monitor_work;
425 struct work_struct chswitch_work;
426 struct work_struct beacon_connection_loss_work;
427
428 unsigned long beacon_timeout;
429 unsigned long probe_timeout;
430 int probe_send_count;
431 bool nullfunc_failed;
432
433 struct mutex mtx;
434 struct cfg80211_bss *associated;
435 struct ieee80211_mgd_auth_data *auth_data;
436 struct ieee80211_mgd_assoc_data *assoc_data;
437
438 u8 bssid[ETH_ALEN];
439
440 u16 aid;
441
442 unsigned long timers_running; /* used for quiesce/restart */
443 bool powersave; /* powersave requested for this iface */
444 bool broken_ap; /* AP is broken -- turn off powersave */
445 enum ieee80211_smps_mode req_smps, /* requested smps mode */
446 ap_smps, /* smps mode AP thinks we're in */
447 driver_smps_mode; /* smps mode request */
448
449 struct work_struct request_smps_work;
450
451 unsigned int flags;
452
453 bool beacon_crc_valid;
454 u32 beacon_crc;
455
456 enum {
457 IEEE80211_MFP_DISABLED,
458 IEEE80211_MFP_OPTIONAL,
459 IEEE80211_MFP_REQUIRED
460 } mfp; /* management frame protection */
461
462 /*
463 * Bitmask of enabled u-apsd queues,
464 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
465 * to take effect.
466 */
467 unsigned int uapsd_queues;
468
469 /*
470 * Maximum number of buffered frames AP can deliver during a
471 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
472 * Needs a new association to take effect.
473 */
474 unsigned int uapsd_max_sp_len;
475
476 int wmm_last_param_set;
477
478 u8 use_4addr;
479
480 /* Signal strength from the last Beacon frame in the current BSS. */
481 int last_beacon_signal;
482
483 /*
484 * Weighted average of the signal strength from Beacon frames in the
485 * current BSS. This is in units of 1/16 of the signal unit to maintain
486 * accuracy and to speed up calculations, i.e., the value need to be
487 * divided by 16 to get the actual value.
488 */
489 int ave_beacon_signal;
490
491 /*
492 * Number of Beacon frames used in ave_beacon_signal. This can be used
493 * to avoid generating less reliable cqm events that would be based
494 * only on couple of received frames.
495 */
496 unsigned int count_beacon_signal;
497
498 /*
499 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
500 * that triggered a cqm event. 0 indicates that no event has been
501 * generated for the current association.
502 */
503 int last_cqm_event_signal;
504
505 /*
506 * State variables for keeping track of RSSI of the AP currently
507 * connected to and informing driver when RSSI has gone
508 * below/above a certain threshold.
509 */
510 int rssi_min_thold, rssi_max_thold;
511 int last_ave_beacon_signal;
512
513 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
514 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
515 };
516
517 struct ieee80211_if_ibss {
518 struct timer_list timer;
519
520 struct mutex mtx;
521
522 unsigned long last_scan_completed;
523
524 u32 basic_rates;
525
526 bool timer_running;
527
528 bool fixed_bssid;
529 bool fixed_channel;
530 bool privacy;
531
532 bool control_port;
533
534 u8 bssid[ETH_ALEN] __aligned(2);
535 u8 ssid[IEEE80211_MAX_SSID_LEN];
536 u8 ssid_len, ie_len;
537 u8 *ie;
538 struct ieee80211_channel *channel;
539 enum nl80211_channel_type channel_type;
540
541 unsigned long ibss_join_req;
542 /* probe response/beacon for IBSS */
543 struct sk_buff __rcu *presp;
544 struct sk_buff *skb;
545
546 spinlock_t incomplete_lock;
547 struct list_head incomplete_stations;
548
549 enum {
550 IEEE80211_IBSS_MLME_SEARCH,
551 IEEE80211_IBSS_MLME_JOINED,
552 } state;
553 };
554
555 struct ieee80211_if_mesh {
556 struct timer_list housekeeping_timer;
557 struct timer_list mesh_path_timer;
558 struct timer_list mesh_path_root_timer;
559
560 unsigned long timers_running;
561
562 unsigned long wrkq_flags;
563
564 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
565 size_t mesh_id_len;
566 /* Active Path Selection Protocol Identifier */
567 u8 mesh_pp_id;
568 /* Active Path Selection Metric Identifier */
569 u8 mesh_pm_id;
570 /* Congestion Control Mode Identifier */
571 u8 mesh_cc_id;
572 /* Synchronization Protocol Identifier */
573 u8 mesh_sp_id;
574 /* Authentication Protocol Identifier */
575 u8 mesh_auth_id;
576 /* Local mesh Sequence Number */
577 u32 sn;
578 /* Last used PREQ ID */
579 u32 preq_id;
580 atomic_t mpaths;
581 /* Timestamp of last SN update */
582 unsigned long last_sn_update;
583 /* Time when it's ok to send next PERR */
584 unsigned long next_perr;
585 /* Timestamp of last PREQ sent */
586 unsigned long last_preq;
587 struct mesh_rmc *rmc;
588 spinlock_t mesh_preq_queue_lock;
589 struct mesh_preq_queue preq_queue;
590 int preq_queue_len;
591 struct mesh_stats mshstats;
592 struct mesh_config mshcfg;
593 u32 mesh_seqnum;
594 bool accepting_plinks;
595 int num_gates;
596 const u8 *ie;
597 u8 ie_len;
598 enum {
599 IEEE80211_MESH_SEC_NONE = 0x0,
600 IEEE80211_MESH_SEC_AUTHED = 0x1,
601 IEEE80211_MESH_SEC_SECURED = 0x2,
602 } security;
603 };
604
605 #ifdef CONFIG_MAC80211_MESH
606 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
607 do { (msh)->mshstats.name++; } while (0)
608 #else
609 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
610 do { } while (0)
611 #endif
612
613 /**
614 * enum ieee80211_sub_if_data_flags - virtual interface flags
615 *
616 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
617 * @IEEE80211_SDATA_PROMISC: interface is promisc
618 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
619 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
620 * associated stations and deliver multicast frames both
621 * back to wireless media and to the local net stack.
622 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
623 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
624 */
625 enum ieee80211_sub_if_data_flags {
626 IEEE80211_SDATA_ALLMULTI = BIT(0),
627 IEEE80211_SDATA_PROMISC = BIT(1),
628 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
629 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
630 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
631 IEEE80211_SDATA_IN_DRIVER = BIT(5),
632 };
633
634 /**
635 * enum ieee80211_sdata_state_bits - virtual interface state bits
636 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
637 * mirrors netif_running() but is separate for interface type
638 * change handling while the interface is up
639 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
640 * mode, so queues are stopped
641 */
642 enum ieee80211_sdata_state_bits {
643 SDATA_STATE_RUNNING,
644 SDATA_STATE_OFFCHANNEL,
645 };
646
647 struct ieee80211_sub_if_data {
648 struct list_head list;
649
650 struct wireless_dev wdev;
651
652 /* keys */
653 struct list_head key_list;
654
655 /* count for keys needing tailroom space allocation */
656 int crypto_tx_tailroom_needed_cnt;
657
658 struct net_device *dev;
659 struct ieee80211_local *local;
660
661 unsigned int flags;
662
663 unsigned long state;
664
665 int drop_unencrypted;
666
667 char name[IFNAMSIZ];
668
669 /*
670 * keep track of whether the HT opmode (stored in
671 * vif.bss_info.ht_operation_mode) is valid.
672 */
673 bool ht_opmode_valid;
674
675 /* to detect idle changes */
676 bool old_idle;
677
678 /* Fragment table for host-based reassembly */
679 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
680 unsigned int fragment_next;
681
682 /* TID bitmap for NoAck policy */
683 u16 noack_map;
684
685 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
686 struct ieee80211_key __rcu *default_unicast_key;
687 struct ieee80211_key __rcu *default_multicast_key;
688 struct ieee80211_key __rcu *default_mgmt_key;
689
690 u16 sequence_number;
691 __be16 control_port_protocol;
692 bool control_port_no_encrypt;
693
694 struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
695
696 struct work_struct work;
697 struct sk_buff_head skb_queue;
698
699 bool arp_filter_state;
700
701 /*
702 * AP this belongs to: self in AP mode and
703 * corresponding AP in VLAN mode, NULL for
704 * all others (might be needed later in IBSS)
705 */
706 struct ieee80211_if_ap *bss;
707
708 /* bitmap of allowed (non-MCS) rate indexes for rate control */
709 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
710 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
711
712 union {
713 struct ieee80211_if_ap ap;
714 struct ieee80211_if_wds wds;
715 struct ieee80211_if_vlan vlan;
716 struct ieee80211_if_managed mgd;
717 struct ieee80211_if_ibss ibss;
718 struct ieee80211_if_mesh mesh;
719 u32 mntr_flags;
720 } u;
721
722 #ifdef CONFIG_MAC80211_DEBUGFS
723 struct {
724 struct dentry *dir;
725 struct dentry *subdir_stations;
726 struct dentry *default_unicast_key;
727 struct dentry *default_multicast_key;
728 struct dentry *default_mgmt_key;
729 } debugfs;
730 #endif
731 /* must be last, dynamically sized area in this! */
732 struct ieee80211_vif vif;
733 };
734
735 static inline
vif_to_sdata(struct ieee80211_vif * p)736 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
737 {
738 return container_of(p, struct ieee80211_sub_if_data, vif);
739 }
740
741 enum sdata_queue_type {
742 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
743 IEEE80211_SDATA_QUEUE_AGG_START = 1,
744 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
745 };
746
747 enum {
748 IEEE80211_RX_MSG = 1,
749 IEEE80211_TX_STATUS_MSG = 2,
750 IEEE80211_EOSP_MSG = 3,
751 };
752
753 struct skb_eosp_msg_data {
754 u8 sta[ETH_ALEN], iface[ETH_ALEN];
755 };
756
757 enum queue_stop_reason {
758 IEEE80211_QUEUE_STOP_REASON_DRIVER,
759 IEEE80211_QUEUE_STOP_REASON_PS,
760 IEEE80211_QUEUE_STOP_REASON_CSA,
761 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
762 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
763 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
764 IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
765 };
766
767 #ifdef CONFIG_MAC80211_LEDS
768 struct tpt_led_trigger {
769 struct led_trigger trig;
770 char name[32];
771 const struct ieee80211_tpt_blink *blink_table;
772 unsigned int blink_table_len;
773 struct timer_list timer;
774 unsigned long prev_traffic;
775 unsigned long tx_bytes, rx_bytes;
776 unsigned int active, want;
777 bool running;
778 };
779 #endif
780
781 /**
782 * mac80211 scan flags - currently active scan mode
783 *
784 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
785 * well be on the operating channel
786 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
787 * determine if we are on the operating channel or not
788 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
789 * that the scan completed.
790 * @SCAN_ABORTED: Set for our scan work function when the driver reported
791 * a scan complete for an aborted scan.
792 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
793 * cancelled.
794 */
795 enum {
796 SCAN_SW_SCANNING,
797 SCAN_HW_SCANNING,
798 SCAN_COMPLETED,
799 SCAN_ABORTED,
800 SCAN_HW_CANCELLED,
801 };
802
803 /**
804 * enum mac80211_scan_state - scan state machine states
805 *
806 * @SCAN_DECISION: Main entry point to the scan state machine, this state
807 * determines if we should keep on scanning or switch back to the
808 * operating channel
809 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
810 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
811 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
812 * send out data
813 * @SCAN_RESUME: Resume the scan and scan the next channel
814 */
815 enum mac80211_scan_state {
816 SCAN_DECISION,
817 SCAN_SET_CHANNEL,
818 SCAN_SEND_PROBE,
819 SCAN_SUSPEND,
820 SCAN_RESUME,
821 };
822
823 struct ieee80211_local {
824 /* embed the driver visible part.
825 * don't cast (use the static inlines below), but we keep
826 * it first anyway so they become a no-op */
827 struct ieee80211_hw hw;
828
829 const struct ieee80211_ops *ops;
830
831 /*
832 * work stuff, potentially off-channel (in the future)
833 */
834 struct list_head work_list;
835 struct timer_list work_timer;
836 struct work_struct work_work;
837
838 /*
839 * private workqueue to mac80211. mac80211 makes this accessible
840 * via ieee80211_queue_work()
841 */
842 struct workqueue_struct *workqueue;
843
844 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
845 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
846 spinlock_t queue_stop_reason_lock;
847
848 int open_count;
849 int monitors, cooked_mntrs;
850 /* number of interfaces with corresponding FIF_ flags */
851 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
852 fif_probe_req;
853 int probe_req_reg;
854 unsigned int filter_flags; /* FIF_* */
855
856 bool wiphy_ciphers_allocated;
857
858 /* protects the aggregated multicast list and filter calls */
859 spinlock_t filter_lock;
860
861 /* used for uploading changed mc list */
862 struct work_struct reconfig_filter;
863
864 /* used to reconfigure hardware SM PS */
865 struct work_struct recalc_smps;
866
867 /* aggregated multicast list */
868 struct netdev_hw_addr_list mc_list;
869
870 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
871
872 /*
873 * suspended is true if we finished all the suspend _and_ we have
874 * not yet come up from resume. This is to be used by mac80211
875 * to ensure driver sanity during suspend and mac80211's own
876 * sanity. It can eventually be used for WoW as well.
877 */
878 bool suspended;
879
880 /*
881 * Resuming is true while suspended, but when we're reprogramming the
882 * hardware -- at that time it's allowed to use ieee80211_queue_work()
883 * again even though some other parts of the stack are still suspended
884 * and we still drop received frames to avoid waking the stack.
885 */
886 bool resuming;
887
888 /*
889 * quiescing is true during the suspend process _only_ to
890 * ease timer cancelling etc.
891 */
892 bool quiescing;
893
894 /* device is started */
895 bool started;
896
897 /* wowlan is enabled -- don't reconfig on resume */
898 bool wowlan;
899
900 int tx_headroom; /* required headroom for hardware/radiotap */
901
902 /* Tasklet and skb queue to process calls from IRQ mode. All frames
903 * added to skb_queue will be processed, but frames in
904 * skb_queue_unreliable may be dropped if the total length of these
905 * queues increases over the limit. */
906 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
907 struct tasklet_struct tasklet;
908 struct sk_buff_head skb_queue;
909 struct sk_buff_head skb_queue_unreliable;
910
911 /*
912 * Internal FIFO queue which is shared between multiple rx path
913 * stages. Its main task is to provide a serialization mechanism,
914 * so all rx handlers can enjoy having exclusive access to their
915 * private data structures.
916 */
917 struct sk_buff_head rx_skb_queue;
918 bool running_rx_handler; /* protected by rx_skb_queue.lock */
919
920 /* Station data */
921 /*
922 * The mutex only protects the list, hash table and
923 * counter, reads are done with RCU.
924 */
925 struct mutex sta_mtx;
926 spinlock_t tim_lock;
927 unsigned long num_sta;
928 struct list_head sta_list;
929 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
930 struct timer_list sta_cleanup;
931 int sta_generation;
932
933 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
934 struct tasklet_struct tx_pending_tasklet;
935
936 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
937
938 /* number of interfaces with corresponding IFF_ flags */
939 atomic_t iff_allmultis, iff_promiscs;
940
941 struct rate_control_ref *rate_ctrl;
942
943 struct crypto_cipher *wep_tx_tfm;
944 struct crypto_cipher *wep_rx_tfm;
945 u32 wep_iv;
946
947 /* see iface.c */
948 struct list_head interfaces;
949 struct mutex iflist_mtx;
950
951 /*
952 * Key mutex, protects sdata's key_list and sta_info's
953 * key pointers (write access, they're RCU.)
954 */
955 struct mutex key_mtx;
956
957 /* mutex for scan and work locking */
958 struct mutex mtx;
959
960 /* Scanning and BSS list */
961 unsigned long scanning;
962 struct cfg80211_ssid scan_ssid;
963 struct cfg80211_scan_request *int_scan_req;
964 struct cfg80211_scan_request *scan_req, *hw_scan_req;
965 struct ieee80211_channel *scan_channel;
966 enum ieee80211_band hw_scan_band;
967 int scan_channel_idx;
968 int scan_ies_len;
969
970 bool sched_scanning;
971 struct ieee80211_sched_scan_ies sched_scan_ies;
972 struct work_struct sched_scan_stopped_work;
973
974 unsigned long leave_oper_channel_time;
975 enum mac80211_scan_state next_scan_state;
976 struct delayed_work scan_work;
977 struct ieee80211_sub_if_data *scan_sdata;
978 enum nl80211_channel_type _oper_channel_type;
979 struct ieee80211_channel *oper_channel, *csa_channel;
980
981 /* Temporary remain-on-channel for off-channel operations */
982 struct ieee80211_channel *tmp_channel;
983 enum nl80211_channel_type tmp_channel_type;
984
985 /* SNMP counters */
986 /* dot11CountersTable */
987 u32 dot11TransmittedFragmentCount;
988 u32 dot11MulticastTransmittedFrameCount;
989 u32 dot11FailedCount;
990 u32 dot11RetryCount;
991 u32 dot11MultipleRetryCount;
992 u32 dot11FrameDuplicateCount;
993 u32 dot11ReceivedFragmentCount;
994 u32 dot11MulticastReceivedFrameCount;
995 u32 dot11TransmittedFrameCount;
996
997 #ifdef CONFIG_MAC80211_LEDS
998 int tx_led_counter, rx_led_counter;
999 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1000 struct tpt_led_trigger *tpt_led_trigger;
1001 char tx_led_name[32], rx_led_name[32],
1002 assoc_led_name[32], radio_led_name[32];
1003 #endif
1004
1005 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1006 /* TX/RX handler statistics */
1007 unsigned int tx_handlers_drop;
1008 unsigned int tx_handlers_queued;
1009 unsigned int tx_handlers_drop_unencrypted;
1010 unsigned int tx_handlers_drop_fragment;
1011 unsigned int tx_handlers_drop_wep;
1012 unsigned int tx_handlers_drop_not_assoc;
1013 unsigned int tx_handlers_drop_unauth_port;
1014 unsigned int rx_handlers_drop;
1015 unsigned int rx_handlers_queued;
1016 unsigned int rx_handlers_drop_nullfunc;
1017 unsigned int rx_handlers_drop_defrag;
1018 unsigned int rx_handlers_drop_short;
1019 unsigned int rx_handlers_drop_passive_scan;
1020 unsigned int tx_expand_skb_head;
1021 unsigned int tx_expand_skb_head_cloned;
1022 unsigned int rx_expand_skb_head;
1023 unsigned int rx_expand_skb_head2;
1024 unsigned int rx_handlers_fragments;
1025 unsigned int tx_status_drop;
1026 #define I802_DEBUG_INC(c) (c)++
1027 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1028 #define I802_DEBUG_INC(c) do { } while (0)
1029 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1030
1031
1032 int total_ps_buffered; /* total number of all buffered unicast and
1033 * multicast packets for power saving stations
1034 */
1035 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
1036
1037 bool pspolling;
1038 bool offchannel_ps_enabled;
1039 /*
1040 * PS can only be enabled when we have exactly one managed
1041 * interface (and monitors) in PS, this then points there.
1042 */
1043 struct ieee80211_sub_if_data *ps_sdata;
1044 struct work_struct dynamic_ps_enable_work;
1045 struct work_struct dynamic_ps_disable_work;
1046 struct timer_list dynamic_ps_timer;
1047 struct notifier_block network_latency_notifier;
1048 struct notifier_block ifa_notifier;
1049
1050 /*
1051 * The dynamic ps timeout configured from user space via WEXT -
1052 * this will override whatever chosen by mac80211 internally.
1053 */
1054 int dynamic_ps_forced_timeout;
1055 int dynamic_ps_user_timeout;
1056 bool disable_dynamic_ps;
1057
1058 int user_power_level; /* in dBm */
1059 int power_constr_level; /* in dBm */
1060
1061 enum ieee80211_smps_mode smps_mode;
1062
1063 struct work_struct restart_work;
1064
1065 #ifdef CONFIG_MAC80211_DEBUGFS
1066 struct local_debugfsdentries {
1067 struct dentry *rcdir;
1068 struct dentry *keys;
1069 } debugfs;
1070 #endif
1071
1072 struct ieee80211_channel *hw_roc_channel;
1073 struct net_device *hw_roc_dev;
1074 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1075 struct work_struct hw_roc_start, hw_roc_done;
1076 enum nl80211_channel_type hw_roc_channel_type;
1077 unsigned int hw_roc_duration;
1078 u32 hw_roc_cookie;
1079 bool hw_roc_for_tx;
1080
1081 struct idr ack_status_frames;
1082 spinlock_t ack_status_lock;
1083
1084 /* dummy netdev for use w/ NAPI */
1085 struct net_device napi_dev;
1086
1087 struct napi_struct napi;
1088 };
1089
1090 static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device * dev)1091 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1092 {
1093 return netdev_priv(dev);
1094 }
1095
1096 /* this struct represents 802.11n's RA/TID combination */
1097 struct ieee80211_ra_tid {
1098 u8 ra[ETH_ALEN];
1099 u16 tid;
1100 };
1101
1102 /* Parsed Information Elements */
1103 struct ieee802_11_elems {
1104 u8 *ie_start;
1105 size_t total_len;
1106
1107 /* pointers to IEs */
1108 u8 *ssid;
1109 u8 *supp_rates;
1110 u8 *fh_params;
1111 u8 *ds_params;
1112 u8 *cf_params;
1113 struct ieee80211_tim_ie *tim;
1114 u8 *ibss_params;
1115 u8 *challenge;
1116 u8 *wpa;
1117 u8 *rsn;
1118 u8 *erp_info;
1119 u8 *ext_supp_rates;
1120 u8 *wmm_info;
1121 u8 *wmm_param;
1122 struct ieee80211_ht_cap *ht_cap_elem;
1123 struct ieee80211_ht_info *ht_info_elem;
1124 struct ieee80211_meshconf_ie *mesh_config;
1125 u8 *mesh_id;
1126 u8 *peering;
1127 u8 *preq;
1128 u8 *prep;
1129 u8 *perr;
1130 struct ieee80211_rann_ie *rann;
1131 u8 *ch_switch_elem;
1132 u8 *country_elem;
1133 u8 *pwr_constr_elem;
1134 u8 *quiet_elem; /* first quite element */
1135 u8 *timeout_int;
1136
1137 /* length of them, respectively */
1138 u8 ssid_len;
1139 u8 supp_rates_len;
1140 u8 fh_params_len;
1141 u8 ds_params_len;
1142 u8 cf_params_len;
1143 u8 tim_len;
1144 u8 ibss_params_len;
1145 u8 challenge_len;
1146 u8 wpa_len;
1147 u8 rsn_len;
1148 u8 erp_info_len;
1149 u8 ext_supp_rates_len;
1150 u8 wmm_info_len;
1151 u8 wmm_param_len;
1152 u8 mesh_id_len;
1153 u8 peering_len;
1154 u8 preq_len;
1155 u8 prep_len;
1156 u8 perr_len;
1157 u8 ch_switch_elem_len;
1158 u8 country_elem_len;
1159 u8 pwr_constr_elem_len;
1160 u8 quiet_elem_len;
1161 u8 num_of_quiet_elem; /* can be more the one */
1162 u8 timeout_int_len;
1163
1164 /* whether a parse error occurred while retrieving these elements */
1165 bool parse_error;
1166 };
1167
hw_to_local(struct ieee80211_hw * hw)1168 static inline struct ieee80211_local *hw_to_local(
1169 struct ieee80211_hw *hw)
1170 {
1171 return container_of(hw, struct ieee80211_local, hw);
1172 }
1173
1174
ieee80211_bssid_match(const u8 * raddr,const u8 * addr)1175 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1176 {
1177 return compare_ether_addr(raddr, addr) == 0 ||
1178 is_broadcast_ether_addr(raddr);
1179 }
1180
1181
1182 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1183 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1184 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1185 u32 changed);
1186 void ieee80211_configure_filter(struct ieee80211_local *local);
1187 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1188
1189 /* STA code */
1190 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1191 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1192 struct cfg80211_auth_request *req);
1193 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1194 struct cfg80211_assoc_request *req);
1195 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1196 struct cfg80211_deauth_request *req);
1197 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1198 struct cfg80211_disassoc_request *req);
1199 void ieee80211_send_pspoll(struct ieee80211_local *local,
1200 struct ieee80211_sub_if_data *sdata);
1201 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1202 int ieee80211_max_network_latency(struct notifier_block *nb,
1203 unsigned long data, void *dummy);
1204 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1205 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1206 struct ieee80211_channel_sw_ie *sw_elem,
1207 struct ieee80211_bss *bss,
1208 u64 timestamp);
1209 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1210 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1211 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1212 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1213 struct sk_buff *skb);
1214 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1215 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1216 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1217
1218 /* IBSS code */
1219 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1220 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1221 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1222 const u8 *bssid, const u8 *addr, u32 supp_rates);
1223 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1224 struct cfg80211_ibss_params *params);
1225 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1226 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1227 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1228 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1229 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1230 struct sk_buff *skb);
1231
1232 /* mesh code */
1233 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1234 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1235 struct sk_buff *skb);
1236
1237 /* scan/BSS handling */
1238 void ieee80211_scan_work(struct work_struct *work);
1239 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1240 const u8 *ssid, u8 ssid_len,
1241 struct ieee80211_channel *chan);
1242 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1243 struct cfg80211_scan_request *req);
1244 void ieee80211_scan_cancel(struct ieee80211_local *local);
1245 ieee80211_rx_result
1246 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1247
1248 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1249 struct ieee80211_bss *
1250 ieee80211_bss_info_update(struct ieee80211_local *local,
1251 struct ieee80211_rx_status *rx_status,
1252 struct ieee80211_mgmt *mgmt,
1253 size_t len,
1254 struct ieee802_11_elems *elems,
1255 struct ieee80211_channel *channel,
1256 bool beacon);
1257 struct ieee80211_bss *
1258 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1259 u8 *ssid, u8 ssid_len);
1260 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1261 struct ieee80211_bss *bss);
1262
1263 /* scheduled scan handling */
1264 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1265 struct cfg80211_sched_scan_request *req);
1266 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1267 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1268
1269 /* off-channel helpers */
1270 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1271 void ieee80211_offchannel_return(struct ieee80211_local *local);
1272 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1273
1274 /* interface handling */
1275 int ieee80211_iface_init(void);
1276 void ieee80211_iface_exit(void);
1277 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1278 struct net_device **new_dev, enum nl80211_iftype type,
1279 struct vif_params *params);
1280 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1281 enum nl80211_iftype type);
1282 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1283 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1284 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1285 void ieee80211_recalc_idle(struct ieee80211_local *local);
1286 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1287 const int offset);
1288
ieee80211_sdata_running(struct ieee80211_sub_if_data * sdata)1289 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1290 {
1291 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1292 }
1293
1294 /* tx handling */
1295 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1296 void ieee80211_tx_pending(unsigned long data);
1297 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1298 struct net_device *dev);
1299 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1300 struct net_device *dev);
1301 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1302 struct sk_buff_head *skbs);
1303
1304 /* HT */
1305 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata);
1306 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1307 struct ieee80211_sta_ht_cap *ht_cap);
1308 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1309 struct ieee80211_supported_band *sband,
1310 struct ieee80211_ht_cap *ht_cap_ie,
1311 struct ieee80211_sta_ht_cap *ht_cap);
1312 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1313 const u8 *da, u16 tid,
1314 u16 initiator, u16 reason_code);
1315 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1316 enum ieee80211_smps_mode smps, const u8 *da,
1317 const u8 *bssid);
1318 void ieee80211_request_smps_work(struct work_struct *work);
1319
1320 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1321 u16 initiator, u16 reason, bool stop);
1322 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1323 u16 initiator, u16 reason, bool stop);
1324 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1325 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1326 struct sta_info *sta,
1327 struct ieee80211_mgmt *mgmt, size_t len);
1328 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1329 struct sta_info *sta,
1330 struct ieee80211_mgmt *mgmt,
1331 size_t len);
1332 void ieee80211_process_addba_request(struct ieee80211_local *local,
1333 struct sta_info *sta,
1334 struct ieee80211_mgmt *mgmt,
1335 size_t len);
1336
1337 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1338 enum ieee80211_back_parties initiator,
1339 bool tx);
1340 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1341 enum ieee80211_back_parties initiator,
1342 bool tx);
1343 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1344 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1345 void ieee80211_ba_session_work(struct work_struct *work);
1346 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1347 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1348
1349 /* Spectrum management */
1350 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1351 struct ieee80211_mgmt *mgmt,
1352 size_t len);
1353
1354 /* Suspend/resume and hw reconfiguration */
1355 int ieee80211_reconfig(struct ieee80211_local *local);
1356 void ieee80211_stop_device(struct ieee80211_local *local);
1357
1358 #ifdef CONFIG_PM
1359 int __ieee80211_suspend(struct ieee80211_hw *hw,
1360 struct cfg80211_wowlan *wowlan);
1361
__ieee80211_resume(struct ieee80211_hw * hw)1362 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1363 {
1364 struct ieee80211_local *local = hw_to_local(hw);
1365
1366 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1367 "%s: resume with hardware scan still in progress\n",
1368 wiphy_name(hw->wiphy));
1369
1370 return ieee80211_reconfig(hw_to_local(hw));
1371 }
1372 #else
__ieee80211_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1373 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1374 struct cfg80211_wowlan *wowlan)
1375 {
1376 return 0;
1377 }
1378
__ieee80211_resume(struct ieee80211_hw * hw)1379 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1380 {
1381 return 0;
1382 }
1383 #endif
1384
1385 /* utility functions/constants */
1386 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1387 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1388 enum nl80211_iftype type);
1389 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1390 int rate, int erp, int short_preamble);
1391 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1392 struct ieee80211_hdr *hdr, const u8 *tsc,
1393 gfp_t gfp);
1394 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1395 bool bss_notify);
1396 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1397
1398 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1399 struct sk_buff *skb, int tid);
ieee80211_tx_skb(struct ieee80211_sub_if_data * sdata,struct sk_buff * skb)1400 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1401 struct sk_buff *skb)
1402 {
1403 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1404 ieee80211_tx_skb_tid(sdata, skb, 7);
1405 }
1406
1407 void ieee802_11_parse_elems(u8 *start, size_t len,
1408 struct ieee802_11_elems *elems);
1409 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1410 struct ieee802_11_elems *elems,
1411 u64 filter, u32 crc);
1412 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1413 enum ieee80211_band band);
1414
1415 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1416 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1417 void ieee80211_dynamic_ps_timer(unsigned long data);
1418 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1419 struct ieee80211_sub_if_data *sdata,
1420 int powersave);
1421 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1422 struct ieee80211_hdr *hdr);
1423 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1424 struct ieee80211_hdr *hdr, bool ack);
1425 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1426
1427 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1428 enum queue_stop_reason reason);
1429 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1430 enum queue_stop_reason reason);
1431 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1432 enum queue_stop_reason reason);
1433 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1434 enum queue_stop_reason reason);
1435 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1436 struct sk_buff *skb);
1437 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1438 struct sk_buff_head *skbs);
1439 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1440 struct sk_buff_head *skbs,
1441 void (*fn)(void *data), void *data);
1442
1443 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1444 u16 transaction, u16 auth_alg,
1445 u8 *extra, size_t extra_len, const u8 *bssid,
1446 const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1447 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1448 const u8 *ie, size_t ie_len,
1449 enum ieee80211_band band, u32 rate_mask,
1450 u8 channel);
1451 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1452 u8 *dst, u32 ratemask,
1453 const u8 *ssid, size_t ssid_len,
1454 const u8 *ie, size_t ie_len,
1455 bool directed);
1456 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1457 const u8 *ssid, size_t ssid_len,
1458 const u8 *ie, size_t ie_len,
1459 u32 ratemask, bool directed, bool no_cck);
1460
1461 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1462 const size_t supp_rates_len,
1463 const u8 *supp_rates);
1464 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1465 struct ieee802_11_elems *elems,
1466 enum ieee80211_band band);
1467 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1468 enum ieee80211_smps_mode smps_mode);
1469 void ieee80211_recalc_smps(struct ieee80211_local *local);
1470
1471 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1472 const u8 *ids, int n_ids, size_t offset);
1473 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1474 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1475 u16 cap);
1476 u8 *ieee80211_ie_build_ht_info(u8 *pos,
1477 struct ieee80211_sta_ht_cap *ht_cap,
1478 struct ieee80211_channel *channel,
1479 enum nl80211_channel_type channel_type);
1480
1481 /* internal work items */
1482 void ieee80211_work_init(struct ieee80211_local *local);
1483 void ieee80211_add_work(struct ieee80211_work *wk);
1484 void free_work(struct ieee80211_work *wk);
1485 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1486 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1487 struct ieee80211_channel *chan,
1488 enum nl80211_channel_type channel_type,
1489 unsigned int duration, u64 *cookie);
1490 int ieee80211_wk_cancel_remain_on_channel(
1491 struct ieee80211_sub_if_data *sdata, u64 cookie);
1492
1493 /* channel management */
1494 enum ieee80211_chan_mode {
1495 CHAN_MODE_UNDEFINED,
1496 CHAN_MODE_HOPPING,
1497 CHAN_MODE_FIXED,
1498 };
1499
1500 enum ieee80211_chan_mode
1501 ieee80211_get_channel_mode(struct ieee80211_local *local,
1502 struct ieee80211_sub_if_data *ignore);
1503 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1504 struct ieee80211_sub_if_data *sdata,
1505 enum nl80211_channel_type chantype);
1506 enum nl80211_channel_type
1507 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info);
1508 enum nl80211_channel_type ieee80211_get_tx_channel_type(
1509 struct ieee80211_local *local,
1510 enum nl80211_channel_type channel_type);
1511
1512 #ifdef CONFIG_MAC80211_NOINLINE
1513 #define debug_noinline noinline
1514 #else
1515 #define debug_noinline
1516 #endif
1517
1518 #endif /* IEEE80211_I_H */
1519