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b43: Mask PHY TX error interrupt, if not debugging
[deliverable/linux.git] / net / mac80211 / ieee80211_i.h
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1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2008 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 <net/cfg80211.h>
27#include <net/wireless.h>
28#include <net/iw_handler.h>
29#include <net/mac80211.h>
30#include "key.h"
31#include "sta_info.h"
32
33struct ieee80211_local;
34
35/* Maximum number of broadcast/multicast frames to buffer when some of the
36 * associated stations are using power saving. */
37#define AP_MAX_BC_BUFFER 128
38
39/* Maximum number of frames buffered to all STAs, including multicast frames.
40 * Note: increasing this limit increases the potential memory requirement. Each
41 * frame can be up to about 2 kB long. */
42#define TOTAL_MAX_TX_BUFFER 512
43
44/* Required encryption head and tailroom */
45#define IEEE80211_ENCRYPT_HEADROOM 8
46#define IEEE80211_ENCRYPT_TAILROOM 18
47
48/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
49 * reception of at least three fragmented frames. This limit can be increased
50 * by changing this define, at the cost of slower frame reassembly and
51 * increased memory use (about 2 kB of RAM per entry). */
52#define IEEE80211_FRAGMENT_MAX 4
53
54/*
55 * Time after which we ignore scan results and no longer report/use
56 * them in any way.
57 */
58#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
59
60#define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
61
62struct ieee80211_fragment_entry {
63 unsigned long first_frag_time;
64 unsigned int seq;
65 unsigned int rx_queue;
66 unsigned int last_frag;
67 unsigned int extra_len;
68 struct sk_buff_head skb_list;
69 int ccmp; /* Whether fragments were encrypted with CCMP */
70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
71};
72
73
74struct ieee80211_bss {
75 /* Yes, this is a hack */
76 struct cfg80211_bss cbss;
77
78 /* don't want to look up all the time */
79 size_t ssid_len;
80 u8 ssid[IEEE80211_MAX_SSID_LEN];
81
82 u8 dtim_period;
83
84 bool wmm_used;
85
86 unsigned long last_probe_resp;
87
88#ifdef CONFIG_MAC80211_MESH
89 u8 *mesh_id;
90 size_t mesh_id_len;
91 u8 *mesh_cfg;
92#endif
93
94#define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
97
98 /*
99 * During assocation, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
103 */
104 bool has_erp_value;
105 u8 erp_value;
106};
107
108static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
109{
110#ifdef CONFIG_MAC80211_MESH
111 return bss->mesh_cfg;
112#endif
113 return NULL;
114}
115
116static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
117{
118#ifdef CONFIG_MAC80211_MESH
119 return bss->mesh_id;
120#endif
121 return NULL;
122}
123
124static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
125{
126#ifdef CONFIG_MAC80211_MESH
127 return bss->mesh_id_len;
128#endif
129 return 0;
130}
131
132
133typedef unsigned __bitwise__ ieee80211_tx_result;
134#define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
135#define TX_DROP ((__force ieee80211_tx_result) 1u)
136#define TX_QUEUED ((__force ieee80211_tx_result) 2u)
137
138#define IEEE80211_TX_FRAGMENTED BIT(0)
139#define IEEE80211_TX_UNICAST BIT(1)
140#define IEEE80211_TX_PS_BUFFERED BIT(2)
141
142struct ieee80211_tx_data {
143 struct sk_buff *skb;
144 struct net_device *dev;
145 struct ieee80211_local *local;
146 struct ieee80211_sub_if_data *sdata;
147 struct sta_info *sta;
148 struct ieee80211_key *key;
149
150 struct ieee80211_channel *channel;
151
152 /* Extra fragments (in addition to the first fragment
153 * in skb) */
154 struct sk_buff **extra_frag;
155 int num_extra_frag;
156
157 u16 ethertype;
158 unsigned int flags;
159};
160
161
162typedef unsigned __bitwise__ ieee80211_rx_result;
163#define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
164#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
165#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
166#define RX_QUEUED ((__force ieee80211_rx_result) 3u)
167
168#define IEEE80211_RX_IN_SCAN BIT(0)
169/* frame is destined to interface currently processed (incl. multicast frames) */
170#define IEEE80211_RX_RA_MATCH BIT(1)
171#define IEEE80211_RX_AMSDU BIT(2)
172#define IEEE80211_RX_CMNTR_REPORTED BIT(3)
173#define IEEE80211_RX_FRAGMENTED BIT(4)
174
175struct ieee80211_rx_data {
176 struct sk_buff *skb;
177 struct net_device *dev;
178 struct ieee80211_local *local;
179 struct ieee80211_sub_if_data *sdata;
180 struct sta_info *sta;
181 struct ieee80211_key *key;
182 struct ieee80211_rx_status *status;
183 struct ieee80211_rate *rate;
184
185 unsigned int flags;
186 int sent_ps_buffered;
187 int queue;
188 u32 tkip_iv32;
189 u16 tkip_iv16;
190};
191
192struct ieee80211_tx_stored_packet {
193 struct sk_buff *skb;
194 struct sk_buff **extra_frag;
195 int num_extra_frag;
196};
197
198struct beacon_data {
199 u8 *head, *tail;
200 int head_len, tail_len;
201 int dtim_period;
202};
203
204struct ieee80211_if_ap {
205 struct beacon_data *beacon;
206
207 struct list_head vlans;
208
209 /* yes, this looks ugly, but guarantees that we can later use
210 * bitmap_empty :)
211 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
212 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
213 struct sk_buff_head ps_bc_buf;
214 atomic_t num_sta_ps; /* number of stations in PS mode */
215 int dtim_count;
216};
217
218struct ieee80211_if_wds {
219 struct sta_info *sta;
220 u8 remote_addr[ETH_ALEN];
221};
222
223struct ieee80211_if_vlan {
224 struct list_head list;
225};
226
227struct mesh_stats {
228 __u32 fwded_frames; /* Mesh forwarded frames */
229 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
230 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
231 atomic_t estab_plinks;
232};
233
234#define PREQ_Q_F_START 0x1
235#define PREQ_Q_F_REFRESH 0x2
236struct mesh_preq_queue {
237 struct list_head list;
238 u8 dst[ETH_ALEN];
239 u8 flags;
240};
241
242/* flags used in struct ieee80211_if_managed.flags */
243#define IEEE80211_STA_SSID_SET BIT(0)
244#define IEEE80211_STA_BSSID_SET BIT(1)
245#define IEEE80211_STA_PREV_BSSID_SET BIT(2)
246#define IEEE80211_STA_AUTHENTICATED BIT(3)
247#define IEEE80211_STA_ASSOCIATED BIT(4)
248#define IEEE80211_STA_PROBEREQ_POLL BIT(5)
249#define IEEE80211_STA_CREATE_IBSS BIT(6)
250#define IEEE80211_STA_MIXED_CELL BIT(7)
251#define IEEE80211_STA_WMM_ENABLED BIT(8)
252#define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
253#define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
254#define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
255#define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
256#define IEEE80211_STA_TKIP_WEP_USED BIT(14)
257#define IEEE80211_STA_CSA_RECEIVED BIT(15)
258#define IEEE80211_STA_MFP_ENABLED BIT(16)
259#define IEEE80211_STA_EXT_SME BIT(17)
260/* flags for MLME request */
261#define IEEE80211_STA_REQ_SCAN 0
262#define IEEE80211_STA_REQ_DIRECT_PROBE 1
263#define IEEE80211_STA_REQ_AUTH 2
264#define IEEE80211_STA_REQ_RUN 3
265
266/* bitfield of allowed auth algs */
267#define IEEE80211_AUTH_ALG_OPEN BIT(0)
268#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
269#define IEEE80211_AUTH_ALG_LEAP BIT(2)
270#define IEEE80211_AUTH_ALG_FT BIT(3)
271
272struct ieee80211_if_managed {
273 struct timer_list timer;
274 struct timer_list chswitch_timer;
275 struct work_struct work;
276 struct work_struct chswitch_work;
277
278 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
279
280 u8 ssid[IEEE80211_MAX_SSID_LEN];
281 size_t ssid_len;
282
283 enum {
284 IEEE80211_STA_MLME_DISABLED,
285 IEEE80211_STA_MLME_DIRECT_PROBE,
286 IEEE80211_STA_MLME_AUTHENTICATE,
287 IEEE80211_STA_MLME_ASSOCIATE,
288 IEEE80211_STA_MLME_ASSOCIATED,
289 } state;
290
291 u16 aid;
292 u16 ap_capab, capab;
293 u8 *extra_ie; /* to be added to the end of AssocReq */
294 size_t extra_ie_len;
295
296 /* The last AssocReq/Resp IEs */
297 u8 *assocreq_ies, *assocresp_ies;
298 size_t assocreq_ies_len, assocresp_ies_len;
299
300 struct sk_buff_head skb_queue;
301
302 int assoc_scan_tries; /* number of scans done pre-association */
303 int direct_probe_tries; /* retries for direct probes */
304 int auth_tries; /* retries for auth req */
305 int assoc_tries; /* retries for assoc req */
306
307 unsigned long request;
308
309 unsigned long last_probe;
310
311 unsigned int flags;
312
313 unsigned int auth_algs; /* bitfield of allowed auth algs */
314 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
315 int auth_transaction;
316
317 enum {
318 IEEE80211_MFP_DISABLED,
319 IEEE80211_MFP_OPTIONAL,
320 IEEE80211_MFP_REQUIRED
321 } mfp; /* management frame protection */
322
323 int wmm_last_param_set;
324
325 /* Extra IE data for management frames */
326 u8 *ie_probereq;
327 size_t ie_probereq_len;
328 u8 *ie_proberesp;
329 size_t ie_proberesp_len;
330 u8 *ie_auth;
331 size_t ie_auth_len;
332 u8 *ie_assocreq;
333 size_t ie_assocreq_len;
334 u8 *ie_reassocreq;
335 size_t ie_reassocreq_len;
336 u8 *ie_deauth;
337 size_t ie_deauth_len;
338 u8 *ie_disassoc;
339 size_t ie_disassoc_len;
340
341 u8 *sme_auth_ie;
342 size_t sme_auth_ie_len;
343};
344
345enum ieee80211_ibss_flags {
346 IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
347 IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
348 IEEE80211_IBSS_BSSID_SET = BIT(2),
349 IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
350 IEEE80211_IBSS_SSID_SET = BIT(4),
351};
352
353enum ieee80211_ibss_request {
354 IEEE80211_IBSS_REQ_RUN = 0,
355};
356
357struct ieee80211_if_ibss {
358 struct timer_list timer;
359 struct work_struct work;
360
361 struct sk_buff_head skb_queue;
362
363 u8 ssid[IEEE80211_MAX_SSID_LEN];
364 u8 ssid_len;
365
366 u32 flags;
367
368 u8 bssid[ETH_ALEN];
369
370 unsigned long request;
371
372 unsigned long ibss_join_req;
373 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
374
375 enum {
376 IEEE80211_IBSS_MLME_SEARCH,
377 IEEE80211_IBSS_MLME_JOINED,
378 } state;
379};
380
381struct ieee80211_if_mesh {
382 struct work_struct work;
383 struct timer_list housekeeping_timer;
384 struct timer_list mesh_path_timer;
385 struct sk_buff_head skb_queue;
386
387 bool housekeeping;
388
389 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
390 size_t mesh_id_len;
391 /* Active Path Selection Protocol Identifier */
392 u8 mesh_pp_id[4];
393 /* Active Path Selection Metric Identifier */
394 u8 mesh_pm_id[4];
395 /* Congestion Control Mode Identifier */
396 u8 mesh_cc_id[4];
397 /* Local mesh Destination Sequence Number */
398 u32 dsn;
399 /* Last used PREQ ID */
400 u32 preq_id;
401 atomic_t mpaths;
402 /* Timestamp of last DSN update */
403 unsigned long last_dsn_update;
404 /* Timestamp of last DSN sent */
405 unsigned long last_preq;
406 struct mesh_rmc *rmc;
407 spinlock_t mesh_preq_queue_lock;
408 struct mesh_preq_queue preq_queue;
409 int preq_queue_len;
410 struct mesh_stats mshstats;
411 struct mesh_config mshcfg;
412 u32 mesh_seqnum;
413 bool accepting_plinks;
414};
415
416#ifdef CONFIG_MAC80211_MESH
417#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
418 do { (msh)->mshstats.name++; } while (0)
419#else
420#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
421 do { } while (0)
422#endif
423
424/**
425 * enum ieee80211_sub_if_data_flags - virtual interface flags
426 *
427 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
428 * @IEEE80211_SDATA_PROMISC: interface is promisc
429 * @IEEE80211_SDATA_USERSPACE_MLME: userspace MLME is active
430 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
431 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
432 * associated stations and deliver multicast frames both
433 * back to wireless media and to the local net stack.
434 */
435enum ieee80211_sub_if_data_flags {
436 IEEE80211_SDATA_ALLMULTI = BIT(0),
437 IEEE80211_SDATA_PROMISC = BIT(1),
438 IEEE80211_SDATA_USERSPACE_MLME = BIT(2),
439 IEEE80211_SDATA_OPERATING_GMODE = BIT(3),
440 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(4),
441};
442
443struct ieee80211_sub_if_data {
444 struct list_head list;
445
446 struct wireless_dev wdev;
447
448 /* keys */
449 struct list_head key_list;
450
451 struct net_device *dev;
452 struct ieee80211_local *local;
453
454 unsigned int flags;
455
456 int drop_unencrypted;
457
458 /* Fragment table for host-based reassembly */
459 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
460 unsigned int fragment_next;
461
462#define NUM_DEFAULT_KEYS 4
463#define NUM_DEFAULT_MGMT_KEYS 2
464 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
465 struct ieee80211_key *default_key;
466 struct ieee80211_key *default_mgmt_key;
467
468 u16 sequence_number;
469
470 /*
471 * AP this belongs to: self in AP mode and
472 * corresponding AP in VLAN mode, NULL for
473 * all others (might be needed later in IBSS)
474 */
475 struct ieee80211_if_ap *bss;
476
477 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
478 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
479
480 union {
481 struct ieee80211_if_ap ap;
482 struct ieee80211_if_wds wds;
483 struct ieee80211_if_vlan vlan;
484 struct ieee80211_if_managed mgd;
485 struct ieee80211_if_ibss ibss;
486#ifdef CONFIG_MAC80211_MESH
487 struct ieee80211_if_mesh mesh;
488#endif
489 u32 mntr_flags;
490 } u;
491
492#ifdef CONFIG_MAC80211_DEBUGFS
493 struct dentry *debugfsdir;
494 union {
495 struct {
496 struct dentry *drop_unencrypted;
497 struct dentry *state;
498 struct dentry *bssid;
499 struct dentry *prev_bssid;
500 struct dentry *ssid_len;
501 struct dentry *aid;
502 struct dentry *ap_capab;
503 struct dentry *capab;
504 struct dentry *extra_ie_len;
505 struct dentry *auth_tries;
506 struct dentry *assoc_tries;
507 struct dentry *auth_algs;
508 struct dentry *auth_alg;
509 struct dentry *auth_transaction;
510 struct dentry *flags;
511 struct dentry *force_unicast_rateidx;
512 struct dentry *max_ratectrl_rateidx;
513 } sta;
514 struct {
515 struct dentry *drop_unencrypted;
516 struct dentry *num_sta_ps;
517 struct dentry *dtim_count;
518 struct dentry *force_unicast_rateidx;
519 struct dentry *max_ratectrl_rateidx;
520 struct dentry *num_buffered_multicast;
521 } ap;
522 struct {
523 struct dentry *drop_unencrypted;
524 struct dentry *peer;
525 struct dentry *force_unicast_rateidx;
526 struct dentry *max_ratectrl_rateidx;
527 } wds;
528 struct {
529 struct dentry *drop_unencrypted;
530 struct dentry *force_unicast_rateidx;
531 struct dentry *max_ratectrl_rateidx;
532 } vlan;
533 struct {
534 struct dentry *mode;
535 } monitor;
536 } debugfs;
537 struct {
538 struct dentry *default_key;
539 struct dentry *default_mgmt_key;
540 } common_debugfs;
541
542#ifdef CONFIG_MAC80211_MESH
543 struct dentry *mesh_stats_dir;
544 struct {
545 struct dentry *fwded_frames;
546 struct dentry *dropped_frames_ttl;
547 struct dentry *dropped_frames_no_route;
548 struct dentry *estab_plinks;
549 struct timer_list mesh_path_timer;
550 } mesh_stats;
551
552 struct dentry *mesh_config_dir;
553 struct {
554 struct dentry *dot11MeshRetryTimeout;
555 struct dentry *dot11MeshConfirmTimeout;
556 struct dentry *dot11MeshHoldingTimeout;
557 struct dentry *dot11MeshMaxRetries;
558 struct dentry *dot11MeshTTL;
559 struct dentry *auto_open_plinks;
560 struct dentry *dot11MeshMaxPeerLinks;
561 struct dentry *dot11MeshHWMPactivePathTimeout;
562 struct dentry *dot11MeshHWMPpreqMinInterval;
563 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
564 struct dentry *dot11MeshHWMPmaxPREQretries;
565 struct dentry *path_refresh_time;
566 struct dentry *min_discovery_timeout;
567 } mesh_config;
568#endif
569
570#endif
571 /* must be last, dynamically sized area in this! */
572 struct ieee80211_vif vif;
573};
574
575static inline
576struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
577{
578 return container_of(p, struct ieee80211_sub_if_data, vif);
579}
580
581static inline void
582ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
583 u8 mesh_id_len, u8 *mesh_id)
584{
585#ifdef CONFIG_MAC80211_MESH
586 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
587 ifmsh->mesh_id_len = mesh_id_len;
588 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
589#else
590 WARN_ON(1);
591#endif
592}
593
594enum {
595 IEEE80211_RX_MSG = 1,
596 IEEE80211_TX_STATUS_MSG = 2,
597 IEEE80211_DELBA_MSG = 3,
598 IEEE80211_ADDBA_MSG = 4,
599};
600
601enum queue_stop_reason {
602 IEEE80211_QUEUE_STOP_REASON_DRIVER,
603 IEEE80211_QUEUE_STOP_REASON_PS,
604 IEEE80211_QUEUE_STOP_REASON_CSA,
605 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
606 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
607};
608
609struct ieee80211_master_priv {
610 struct ieee80211_local *local;
611};
612
613struct ieee80211_local {
614 /* embed the driver visible part.
615 * don't cast (use the static inlines below), but we keep
616 * it first anyway so they become a no-op */
617 struct ieee80211_hw hw;
618
619 const struct ieee80211_ops *ops;
620
621 /* AC queue corresponding to each AMPDU queue */
622 s8 ampdu_ac_queue[IEEE80211_MAX_AMPDU_QUEUES];
623 unsigned int amdpu_ac_stop_refcnt[IEEE80211_MAX_AMPDU_QUEUES];
624
625 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES +
626 IEEE80211_MAX_AMPDU_QUEUES];
627 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
628 spinlock_t queue_stop_reason_lock;
629
630 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
631 int open_count;
632 int monitors, cooked_mntrs;
633 /* number of interfaces with corresponding FIF_ flags */
634 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
635 unsigned int filter_flags; /* FIF_* */
636 struct iw_statistics wstats;
637 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
638 int tx_headroom; /* required headroom for hardware/radiotap */
639
640 /* Tasklet and skb queue to process calls from IRQ mode. All frames
641 * added to skb_queue will be processed, but frames in
642 * skb_queue_unreliable may be dropped if the total length of these
643 * queues increases over the limit. */
644#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
645 struct tasklet_struct tasklet;
646 struct sk_buff_head skb_queue;
647 struct sk_buff_head skb_queue_unreliable;
648
649 /* Station data */
650 /*
651 * The lock only protects the list, hash, timer and counter
652 * against manipulation, reads are done in RCU. Additionally,
653 * the lock protects each BSS's TIM bitmap.
654 */
655 spinlock_t sta_lock;
656 unsigned long num_sta;
657 struct list_head sta_list;
658 struct list_head sta_flush_list;
659 struct work_struct sta_flush_work;
660 struct sta_info *sta_hash[STA_HASH_SIZE];
661 struct timer_list sta_cleanup;
662
663 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
664 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
665 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
666 struct tasklet_struct tx_pending_tasklet;
667
668 /* number of interfaces with corresponding IFF_ flags */
669 atomic_t iff_allmultis, iff_promiscs;
670
671 struct rate_control_ref *rate_ctrl;
672
673 int rts_threshold;
674 int fragmentation_threshold;
675
676 struct crypto_blkcipher *wep_tx_tfm;
677 struct crypto_blkcipher *wep_rx_tfm;
678 u32 wep_iv;
679
680 /* see iface.c */
681 struct list_head interfaces;
682 struct mutex iflist_mtx;
683
684 /*
685 * Key lock, protects sdata's key_list and sta_info's
686 * key pointers (write access, they're RCU.)
687 */
688 spinlock_t key_lock;
689
690
691 /* Scanning and BSS list */
692 bool sw_scanning, hw_scanning;
693 struct cfg80211_ssid scan_ssid;
694 struct cfg80211_scan_request int_scan_req;
695 struct cfg80211_scan_request *scan_req;
696 struct ieee80211_channel *scan_channel;
697 int scan_channel_idx;
698
699 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
700 unsigned long last_scan_completed;
701 struct delayed_work scan_work;
702 struct ieee80211_sub_if_data *scan_sdata;
703 enum nl80211_channel_type oper_channel_type;
704 struct ieee80211_channel *oper_channel, *csa_channel;
705
706 /* SNMP counters */
707 /* dot11CountersTable */
708 u32 dot11TransmittedFragmentCount;
709 u32 dot11MulticastTransmittedFrameCount;
710 u32 dot11FailedCount;
711 u32 dot11RetryCount;
712 u32 dot11MultipleRetryCount;
713 u32 dot11FrameDuplicateCount;
714 u32 dot11ReceivedFragmentCount;
715 u32 dot11MulticastReceivedFrameCount;
716 u32 dot11TransmittedFrameCount;
717
718#ifdef CONFIG_MAC80211_LEDS
719 int tx_led_counter, rx_led_counter;
720 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
721 char tx_led_name[32], rx_led_name[32],
722 assoc_led_name[32], radio_led_name[32];
723#endif
724
725#ifdef CONFIG_MAC80211_DEBUGFS
726 struct work_struct sta_debugfs_add;
727#endif
728
729#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
730 /* TX/RX handler statistics */
731 unsigned int tx_handlers_drop;
732 unsigned int tx_handlers_queued;
733 unsigned int tx_handlers_drop_unencrypted;
734 unsigned int tx_handlers_drop_fragment;
735 unsigned int tx_handlers_drop_wep;
736 unsigned int tx_handlers_drop_not_assoc;
737 unsigned int tx_handlers_drop_unauth_port;
738 unsigned int rx_handlers_drop;
739 unsigned int rx_handlers_queued;
740 unsigned int rx_handlers_drop_nullfunc;
741 unsigned int rx_handlers_drop_defrag;
742 unsigned int rx_handlers_drop_short;
743 unsigned int rx_handlers_drop_passive_scan;
744 unsigned int tx_expand_skb_head;
745 unsigned int tx_expand_skb_head_cloned;
746 unsigned int rx_expand_skb_head;
747 unsigned int rx_expand_skb_head2;
748 unsigned int rx_handlers_fragments;
749 unsigned int tx_status_drop;
750#define I802_DEBUG_INC(c) (c)++
751#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
752#define I802_DEBUG_INC(c) do { } while (0)
753#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
754
755
756 int total_ps_buffered; /* total number of all buffered unicast and
757 * multicast packets for power saving stations
758 */
759 int wifi_wme_noack_test;
760 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
761
762 bool powersave;
763 bool pspolling;
764 struct work_struct dynamic_ps_enable_work;
765 struct work_struct dynamic_ps_disable_work;
766 struct timer_list dynamic_ps_timer;
767
768 int user_power_level; /* in dBm */
769 int power_constr_level; /* in dBm */
770
771#ifdef CONFIG_MAC80211_DEBUGFS
772 struct local_debugfsdentries {
773 struct dentry *rcdir;
774 struct dentry *rcname;
775 struct dentry *frequency;
776 struct dentry *rts_threshold;
777 struct dentry *fragmentation_threshold;
778 struct dentry *short_retry_limit;
779 struct dentry *long_retry_limit;
780 struct dentry *total_ps_buffered;
781 struct dentry *wep_iv;
782 struct dentry *tsf;
783 struct dentry *statistics;
784 struct local_debugfsdentries_statsdentries {
785 struct dentry *transmitted_fragment_count;
786 struct dentry *multicast_transmitted_frame_count;
787 struct dentry *failed_count;
788 struct dentry *retry_count;
789 struct dentry *multiple_retry_count;
790 struct dentry *frame_duplicate_count;
791 struct dentry *received_fragment_count;
792 struct dentry *multicast_received_frame_count;
793 struct dentry *transmitted_frame_count;
794 struct dentry *wep_undecryptable_count;
795 struct dentry *num_scans;
796#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
797 struct dentry *tx_handlers_drop;
798 struct dentry *tx_handlers_queued;
799 struct dentry *tx_handlers_drop_unencrypted;
800 struct dentry *tx_handlers_drop_fragment;
801 struct dentry *tx_handlers_drop_wep;
802 struct dentry *tx_handlers_drop_not_assoc;
803 struct dentry *tx_handlers_drop_unauth_port;
804 struct dentry *rx_handlers_drop;
805 struct dentry *rx_handlers_queued;
806 struct dentry *rx_handlers_drop_nullfunc;
807 struct dentry *rx_handlers_drop_defrag;
808 struct dentry *rx_handlers_drop_short;
809 struct dentry *rx_handlers_drop_passive_scan;
810 struct dentry *tx_expand_skb_head;
811 struct dentry *tx_expand_skb_head_cloned;
812 struct dentry *rx_expand_skb_head;
813 struct dentry *rx_expand_skb_head2;
814 struct dentry *rx_handlers_fragments;
815 struct dentry *tx_status_drop;
816#endif
817 struct dentry *dot11ACKFailureCount;
818 struct dentry *dot11RTSFailureCount;
819 struct dentry *dot11FCSErrorCount;
820 struct dentry *dot11RTSSuccessCount;
821 } stats;
822 struct dentry *stations;
823 struct dentry *keys;
824 } debugfs;
825#endif
826};
827
828static inline struct ieee80211_sub_if_data *
829IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
830{
831 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
832
833 BUG_ON(!local || local->mdev == dev);
834
835 return netdev_priv(dev);
836}
837
838/* this struct represents 802.11n's RA/TID combination */
839struct ieee80211_ra_tid {
840 u8 ra[ETH_ALEN];
841 u16 tid;
842};
843
844/* Parsed Information Elements */
845struct ieee802_11_elems {
846 u8 *ie_start;
847 size_t total_len;
848
849 /* pointers to IEs */
850 u8 *ssid;
851 u8 *supp_rates;
852 u8 *fh_params;
853 u8 *ds_params;
854 u8 *cf_params;
855 u8 *tim;
856 u8 *ibss_params;
857 u8 *challenge;
858 u8 *wpa;
859 u8 *rsn;
860 u8 *erp_info;
861 u8 *ext_supp_rates;
862 u8 *wmm_info;
863 u8 *wmm_param;
864 struct ieee80211_ht_cap *ht_cap_elem;
865 struct ieee80211_ht_info *ht_info_elem;
866 u8 *mesh_config;
867 u8 *mesh_id;
868 u8 *peer_link;
869 u8 *preq;
870 u8 *prep;
871 u8 *perr;
872 u8 *ch_switch_elem;
873 u8 *country_elem;
874 u8 *pwr_constr_elem;
875 u8 *quiet_elem; /* first quite element */
876 u8 *timeout_int;
877
878 /* length of them, respectively */
879 u8 ssid_len;
880 u8 supp_rates_len;
881 u8 fh_params_len;
882 u8 ds_params_len;
883 u8 cf_params_len;
884 u8 tim_len;
885 u8 ibss_params_len;
886 u8 challenge_len;
887 u8 wpa_len;
888 u8 rsn_len;
889 u8 erp_info_len;
890 u8 ext_supp_rates_len;
891 u8 wmm_info_len;
892 u8 wmm_param_len;
893 u8 mesh_config_len;
894 u8 mesh_id_len;
895 u8 peer_link_len;
896 u8 preq_len;
897 u8 prep_len;
898 u8 perr_len;
899 u8 ch_switch_elem_len;
900 u8 country_elem_len;
901 u8 pwr_constr_elem_len;
902 u8 quiet_elem_len;
903 u8 num_of_quiet_elem; /* can be more the one */
904 u8 timeout_int_len;
905};
906
907static inline struct ieee80211_local *hw_to_local(
908 struct ieee80211_hw *hw)
909{
910 return container_of(hw, struct ieee80211_local, hw);
911}
912
913static inline struct ieee80211_hw *local_to_hw(
914 struct ieee80211_local *local)
915{
916 return &local->hw;
917}
918
919
920static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
921{
922 return compare_ether_addr(raddr, addr) == 0 ||
923 is_broadcast_ether_addr(raddr);
924}
925
926
927int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
928int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
929void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
930void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
931 u32 changed);
932void ieee80211_configure_filter(struct ieee80211_local *local);
933u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
934
935/* wireless extensions */
936extern const struct iw_handler_def ieee80211_iw_handler_def;
937
938/* STA code */
939void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
940ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
941 struct sk_buff *skb,
942 struct ieee80211_rx_status *rx_status);
943int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
944int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
945int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
946int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
947void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
948int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
949int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
950void ieee80211_send_pspoll(struct ieee80211_local *local,
951 struct ieee80211_sub_if_data *sdata);
952
953/* IBSS code */
954int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
955int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
956int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
957int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
958void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
959void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
960ieee80211_rx_result
961ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
962 struct ieee80211_rx_status *rx_status);
963struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
964 u8 *bssid, u8 *addr, u32 supp_rates);
965
966/* scan/BSS handling */
967void ieee80211_scan_work(struct work_struct *work);
968int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
969 struct cfg80211_scan_request *req);
970int ieee80211_scan_results(struct ieee80211_local *local,
971 struct iw_request_info *info,
972 char *buf, size_t len);
973ieee80211_rx_result
974ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
975 struct sk_buff *skb,
976 struct ieee80211_rx_status *rx_status);
977int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
978 const char *ie, size_t len);
979
980void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
981void ieee80211_scan_failed(struct ieee80211_local *local);
982int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
983 struct cfg80211_scan_request *req);
984struct ieee80211_bss *
985ieee80211_bss_info_update(struct ieee80211_local *local,
986 struct ieee80211_rx_status *rx_status,
987 struct ieee80211_mgmt *mgmt,
988 size_t len,
989 struct ieee802_11_elems *elems,
990 struct ieee80211_channel *channel,
991 bool beacon);
992struct ieee80211_bss *
993ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
994 u8 *ssid, u8 ssid_len);
995void ieee80211_rx_bss_put(struct ieee80211_local *local,
996 struct ieee80211_bss *bss);
997void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
998 int freq, u8 *ssid, u8 ssid_len);
999
1000/* interface handling */
1001int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1002 struct net_device **new_dev, enum nl80211_iftype type,
1003 struct vif_params *params);
1004int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1005 enum nl80211_iftype type);
1006void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1007void ieee80211_remove_interfaces(struct ieee80211_local *local);
1008
1009/* tx handling */
1010void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1011void ieee80211_tx_pending(unsigned long data);
1012int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
1013int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1014int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1015
1016/* HT */
1017void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1018 struct ieee80211_ht_cap *ht_cap_ie,
1019 struct ieee80211_sta_ht_cap *ht_cap);
1020u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
1021 struct ieee80211_ht_info *hti,
1022 u16 ap_ht_cap_flags);
1023void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1024void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1025 const u8 *da, u16 tid,
1026 u16 initiator, u16 reason_code);
1027
1028void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1029 u16 tid, u16 initiator, u16 reason);
1030void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1031 u16 initiator, u16 reason);
1032void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1033void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1034 struct sta_info *sta,
1035 struct ieee80211_mgmt *mgmt, size_t len);
1036void ieee80211_process_addba_resp(struct ieee80211_local *local,
1037 struct sta_info *sta,
1038 struct ieee80211_mgmt *mgmt,
1039 size_t len);
1040void ieee80211_process_addba_request(struct ieee80211_local *local,
1041 struct sta_info *sta,
1042 struct ieee80211_mgmt *mgmt,
1043 size_t len);
1044
1045int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1046 enum ieee80211_back_parties initiator);
1047
1048/* Spectrum management */
1049void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1050 struct ieee80211_mgmt *mgmt,
1051 size_t len);
1052void ieee80211_chswitch_timer(unsigned long data);
1053void ieee80211_chswitch_work(struct work_struct *work);
1054void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1055 struct ieee80211_channel_sw_ie *sw_elem,
1056 struct ieee80211_bss *bss);
1057void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1058 u16 capab_info, u8 *pwr_constr_elem,
1059 u8 pwr_constr_elem_len);
1060
1061/* Suspend/resume */
1062int __ieee80211_suspend(struct ieee80211_hw *hw);
1063int __ieee80211_resume(struct ieee80211_hw *hw);
1064
1065/* utility functions/constants */
1066extern void *mac80211_wiphy_privid; /* for wiphy privid */
1067extern const unsigned char rfc1042_header[6];
1068extern const unsigned char bridge_tunnel_header[6];
1069u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1070 enum nl80211_iftype type);
1071int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1072 int rate, int erp, int short_preamble);
1073void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1074 struct ieee80211_hdr *hdr);
1075void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1076void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1077 int encrypt);
1078void ieee802_11_parse_elems(u8 *start, size_t len,
1079 struct ieee802_11_elems *elems);
1080int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
1081u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1082 enum ieee80211_band band);
1083
1084void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1085void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1086void ieee80211_dynamic_ps_timer(unsigned long data);
1087void ieee80211_send_nullfunc(struct ieee80211_local *local,
1088 struct ieee80211_sub_if_data *sdata,
1089 int powersave);
1090
1091void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1092 enum queue_stop_reason reason);
1093void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1094 enum queue_stop_reason reason);
1095void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1096 enum queue_stop_reason reason);
1097void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1098 enum queue_stop_reason reason);
1099
1100void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1101 u16 transaction, u16 auth_alg,
1102 u8 *extra, size_t extra_len,
1103 const u8 *bssid, int encrypt);
1104void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1105 u8 *ssid, size_t ssid_len,
1106 u8 *ie, size_t ie_len);
1107
1108void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1109 const size_t supp_rates_len,
1110 const u8 *supp_rates);
1111u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1112 struct ieee802_11_elems *elems,
1113 enum ieee80211_band band);
1114
1115#ifdef CONFIG_MAC80211_NOINLINE
1116#define debug_noinline noinline
1117#else
1118#define debug_noinline
1119#endif
1120
1121#endif /* IEEE80211_I_H */
Linux kernel - Deliverables
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