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[openwrt/openwrt.git] / package / mac80211 / src / mac80211 / ieee80211_i.h
1 /*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #ifndef IEEE80211_I_H
12 #define IEEE80211_I_H
13
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <net/wireless.h>
26 #include "ieee80211_key.h"
27 #include "sta_info.h"
28
29 /* ieee80211.o internal definitions, etc. These are not included into
30 * low-level drivers. */
31
32 #ifndef ETH_P_PAE
33 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
34 #endif /* ETH_P_PAE */
35
36 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
37
38 struct ieee80211_local;
39
40 #define BIT(x) (1 << (x))
41
42 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
43
44 /* Maximum number of broadcast/multicast frames to buffer when some of the
45 * associated stations are using power saving. */
46 #define AP_MAX_BC_BUFFER 128
47
48 /* Maximum number of frames buffered to all STAs, including multicast frames.
49 * Note: increasing this limit increases the potential memory requirement. Each
50 * frame can be up to about 2 kB long. */
51 #define TOTAL_MAX_TX_BUFFER 512
52
53 /* Required encryption head and tailroom */
54 #define IEEE80211_ENCRYPT_HEADROOM 8
55 #define IEEE80211_ENCRYPT_TAILROOM 12
56
57 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
58 * reception of at least three fragmented frames. This limit can be increased
59 * by changing this define, at the cost of slower frame reassembly and
60 * increased memory use (about 2 kB of RAM per entry). */
61 #define IEEE80211_FRAGMENT_MAX 4
62
63 struct ieee80211_fragment_entry {
64 unsigned long first_frag_time;
65 unsigned int seq;
66 unsigned int rx_queue;
67 unsigned int last_frag;
68 unsigned int extra_len;
69 struct sk_buff_head skb_list;
70 int ccmp; /* Whether fragments were encrypted with CCMP */
71 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
72 };
73
74
75 struct ieee80211_sta_bss {
76 struct list_head list;
77 struct ieee80211_sta_bss *hnext;
78 atomic_t users;
79
80 u8 bssid[ETH_ALEN];
81 u8 ssid[IEEE80211_MAX_SSID_LEN];
82 size_t ssid_len;
83 u16 capability; /* host byte order */
84 int hw_mode;
85 int channel;
86 int freq;
87 int rssi, signal, noise;
88 u8 *wpa_ie;
89 size_t wpa_ie_len;
90 u8 *rsn_ie;
91 size_t rsn_ie_len;
92 u8 *wmm_ie;
93 size_t wmm_ie_len;
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
97 int beacon_int;
98 u64 timestamp;
99
100 int probe_resp;
101 unsigned long last_update;
102
103 /* during assocation, we save an ERP value from a probe response so
104 * that we can feed ERP info to the driver when handling the
105 * association completes. these fields probably won't be up-to-date
106 * otherwise, you probably don't want to use them. */
107 int has_erp_value;
108 u8 erp_value;
109 };
110
111
112 typedef enum {
113 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
114 } ieee80211_txrx_result;
115
116 /* flags used in struct ieee80211_txrx_data.flags */
117 /* whether the MSDU was fragmented */
118 #define IEEE80211_TXRXD_FRAGMENTED BIT(0)
119 #define IEEE80211_TXRXD_TXUNICAST BIT(1)
120 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
121 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
122 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
123 /* frame is destined to interface currently processed (incl. multicast frames) */
124 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
125 #define IEEE80211_TXRXD_TX_INJECTED BIT(6)
126 struct ieee80211_txrx_data {
127 struct sk_buff *skb;
128 struct net_device *dev;
129 struct ieee80211_local *local;
130 struct ieee80211_sub_if_data *sdata;
131 struct sta_info *sta;
132 u16 fc, ethertype;
133 struct ieee80211_key *key;
134 unsigned int flags;
135 union {
136 struct {
137 struct ieee80211_tx_control *control;
138 struct ieee80211_hw_mode *mode;
139 struct ieee80211_rate *rate;
140 /* use this rate (if set) for last fragment; rate can
141 * be set to lower rate for the first fragments, e.g.,
142 * when using CTS protection with IEEE 802.11g. */
143 struct ieee80211_rate *last_frag_rate;
144 int last_frag_hwrate;
145
146 /* Extra fragments (in addition to the first fragment
147 * in skb) */
148 int num_extra_frag;
149 struct sk_buff **extra_frag;
150 } tx;
151 struct {
152 struct ieee80211_rx_status *status;
153 int sent_ps_buffered;
154 int queue;
155 int load;
156 u32 tkip_iv32;
157 u16 tkip_iv16;
158 } rx;
159 } u;
160 };
161
162 /* flags used in struct ieee80211_tx_packet_data.flags */
163 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
164 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
165 #define IEEE80211_TXPD_REQUEUE BIT(2)
166 /* Stored in sk_buff->cb */
167 struct ieee80211_tx_packet_data {
168 int ifindex;
169 unsigned long jiffies;
170 unsigned int flags;
171 u8 queue;
172 };
173
174 struct ieee80211_tx_stored_packet {
175 struct ieee80211_tx_control control;
176 struct sk_buff *skb;
177 int num_extra_frag;
178 struct sk_buff **extra_frag;
179 int last_frag_rateidx;
180 int last_frag_hwrate;
181 struct ieee80211_rate *last_frag_rate;
182 unsigned int last_frag_rate_ctrl_probe;
183 };
184
185 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
186 (struct ieee80211_txrx_data *tx);
187
188 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
189 (struct ieee80211_txrx_data *rx);
190
191 struct ieee80211_if_ap {
192 u8 *beacon_head, *beacon_tail;
193 int beacon_head_len, beacon_tail_len;
194
195 struct list_head vlans;
196
197 u8 ssid[IEEE80211_MAX_SSID_LEN];
198 size_t ssid_len;
199
200 /* yes, this looks ugly, but guarantees that we can later use
201 * bitmap_empty :)
202 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
203 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
204 atomic_t num_sta_ps; /* number of stations in PS mode */
205 struct sk_buff_head ps_bc_buf;
206 int dtim_period, dtim_count;
207 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
208 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
209 int num_beacons; /* number of TXed beacon frames for this BSS */
210 };
211
212 struct ieee80211_if_wds {
213 u8 remote_addr[ETH_ALEN];
214 struct sta_info *sta;
215 };
216
217 struct ieee80211_if_vlan {
218 struct ieee80211_sub_if_data *ap;
219 struct list_head list;
220 };
221
222 /* flags used in struct ieee80211_if_sta.flags */
223 #define IEEE80211_STA_SSID_SET BIT(0)
224 #define IEEE80211_STA_BSSID_SET BIT(1)
225 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
226 #define IEEE80211_STA_AUTHENTICATED BIT(3)
227 #define IEEE80211_STA_ASSOCIATED BIT(4)
228 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
229 #define IEEE80211_STA_CREATE_IBSS BIT(6)
230 #define IEEE80211_STA_MIXED_CELL BIT(7)
231 #define IEEE80211_STA_WMM_ENABLED BIT(8)
232 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
233 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
234 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
235 struct ieee80211_if_sta {
236 enum {
237 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
238 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
239 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
240 } state;
241 struct timer_list timer;
242 struct work_struct work;
243 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
244 u8 ssid[IEEE80211_MAX_SSID_LEN];
245 size_t ssid_len;
246 u16 aid;
247 u16 ap_capab, capab;
248 u8 *extra_ie; /* to be added to the end of AssocReq */
249 size_t extra_ie_len;
250
251 /* The last AssocReq/Resp IEs */
252 u8 *assocreq_ies, *assocresp_ies;
253 size_t assocreq_ies_len, assocresp_ies_len;
254
255 int auth_tries, assoc_tries;
256
257 unsigned int flags;
258 #define IEEE80211_STA_REQ_SCAN 0
259 #define IEEE80211_STA_REQ_AUTH 1
260 #define IEEE80211_STA_REQ_RUN 2
261 unsigned long request;
262 struct sk_buff_head skb_queue;
263
264 int key_management_enabled;
265 unsigned long last_probe;
266
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 unsigned int auth_algs; /* bitfield of allowed auth algs */
271 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
272 int auth_transaction;
273
274 unsigned long ibss_join_req;
275 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
276 u32 supp_rates_bits;
277
278 int wmm_last_param_set;
279 };
280
281
282 /* flags used in struct ieee80211_sub_if_data.flags */
283 #define IEEE80211_SDATA_ALLMULTI BIT(0)
284 #define IEEE80211_SDATA_PROMISC BIT(1)
285 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */
286 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon
287 * generator reports that there are no present stations that cannot support short
288 * preambles */
289 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3)
290 #define IEEE80211_SDATA_USERSPACE_MLME BIT(4)
291 struct ieee80211_sub_if_data {
292 struct list_head list;
293 enum ieee80211_if_types type;
294
295 struct wireless_dev wdev;
296
297 /* keys */
298 struct list_head key_list;
299
300 struct net_device *dev;
301 struct ieee80211_local *local;
302
303 unsigned int flags;
304
305 int drop_unencrypted;
306 int eapol; /* 0 = process EAPOL frames as normal data frames,
307 * 1 = send EAPOL frames through wlan#ap to hostapd
308 * (default) */
309 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
310 * port */
311
312 u16 sequence;
313
314 /* Fragment table for host-based reassembly */
315 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
316 unsigned int fragment_next;
317
318 #define NUM_DEFAULT_KEYS 4
319 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
320 struct ieee80211_key *default_key;
321
322 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
323
324 union {
325 struct ieee80211_if_ap ap;
326 struct ieee80211_if_wds wds;
327 struct ieee80211_if_vlan vlan;
328 struct ieee80211_if_sta sta;
329 } u;
330 int channel_use;
331 int channel_use_raw;
332
333 #ifdef CONFIG_MAC80211_DEBUGFS
334 struct dentry *debugfsdir;
335 union {
336 struct {
337 struct dentry *channel_use;
338 struct dentry *drop_unencrypted;
339 struct dentry *eapol;
340 struct dentry *ieee8021_x;
341 struct dentry *state;
342 struct dentry *bssid;
343 struct dentry *prev_bssid;
344 struct dentry *ssid_len;
345 struct dentry *aid;
346 struct dentry *ap_capab;
347 struct dentry *capab;
348 struct dentry *extra_ie_len;
349 struct dentry *auth_tries;
350 struct dentry *assoc_tries;
351 struct dentry *auth_algs;
352 struct dentry *auth_alg;
353 struct dentry *auth_transaction;
354 struct dentry *flags;
355 } sta;
356 struct {
357 struct dentry *channel_use;
358 struct dentry *drop_unencrypted;
359 struct dentry *eapol;
360 struct dentry *ieee8021_x;
361 struct dentry *num_sta_ps;
362 struct dentry *dtim_period;
363 struct dentry *dtim_count;
364 struct dentry *num_beacons;
365 struct dentry *force_unicast_rateidx;
366 struct dentry *max_ratectrl_rateidx;
367 struct dentry *num_buffered_multicast;
368 struct dentry *beacon_head_len;
369 struct dentry *beacon_tail_len;
370 } ap;
371 struct {
372 struct dentry *channel_use;
373 struct dentry *drop_unencrypted;
374 struct dentry *eapol;
375 struct dentry *ieee8021_x;
376 struct dentry *peer;
377 } wds;
378 struct {
379 struct dentry *channel_use;
380 struct dentry *drop_unencrypted;
381 struct dentry *eapol;
382 struct dentry *ieee8021_x;
383 } vlan;
384 struct {
385 struct dentry *mode;
386 } monitor;
387 struct dentry *default_key;
388 } debugfs;
389 #endif
390 };
391
392 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
393
394 enum {
395 IEEE80211_RX_MSG = 1,
396 IEEE80211_TX_STATUS_MSG = 2,
397 };
398
399 struct ieee80211_local {
400 /* embed the driver visible part.
401 * don't cast (use the static inlines below), but we keep
402 * it first anyway so they become a no-op */
403 struct ieee80211_hw hw;
404
405 const struct ieee80211_ops *ops;
406
407 /* List of registered struct ieee80211_hw_mode */
408 struct list_head modes_list;
409
410 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
411 int open_count;
412 int monitors;
413 unsigned int filter_flags; /* FIF_* */
414 struct iw_statistics wstats;
415 u8 wstats_flags;
416 int tx_headroom; /* required headroom for hardware/radiotap */
417
418 enum {
419 IEEE80211_DEV_UNINITIALIZED = 0,
420 IEEE80211_DEV_REGISTERED,
421 IEEE80211_DEV_UNREGISTERED,
422 } reg_state;
423
424 /* Tasklet and skb queue to process calls from IRQ mode. All frames
425 * added to skb_queue will be processed, but frames in
426 * skb_queue_unreliable may be dropped if the total length of these
427 * queues increases over the limit. */
428 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
429 struct tasklet_struct tasklet;
430 struct sk_buff_head skb_queue;
431 struct sk_buff_head skb_queue_unreliable;
432
433 /* Station data structures */
434 rwlock_t sta_lock; /* protects STA data structures */
435 int num_sta; /* number of stations in sta_list */
436 struct list_head sta_list;
437 struct sta_info *sta_hash[STA_HASH_SIZE];
438 struct timer_list sta_cleanup;
439
440 unsigned long state[NUM_TX_DATA_QUEUES];
441 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
442 struct tasklet_struct tx_pending_tasklet;
443
444 /* number of interfaces with corresponding IFF_ flags */
445 atomic_t iff_allmultis, iff_promiscs;
446
447 struct rate_control_ref *rate_ctrl;
448
449 /* Supported and basic rate filters for different modes. These are
450 * pointers to -1 terminated lists and rates in 100 kbps units. */
451 int *supp_rates[NUM_IEEE80211_MODES];
452 int *basic_rates[NUM_IEEE80211_MODES];
453
454 int rts_threshold;
455 int fragmentation_threshold;
456 int short_retry_limit; /* dot11ShortRetryLimit */
457 int long_retry_limit; /* dot11LongRetryLimit */
458
459 struct crypto_blkcipher *wep_tx_tfm;
460 struct crypto_blkcipher *wep_rx_tfm;
461 u32 wep_iv;
462
463 int bridge_packets; /* bridge packets between associated stations and
464 * deliver multicast frames both back to wireless
465 * media and to the local net stack */
466
467 ieee80211_rx_handler *rx_pre_handlers;
468 ieee80211_rx_handler *rx_handlers;
469 ieee80211_tx_handler *tx_handlers;
470
471 struct list_head interfaces;
472
473 int sta_scanning;
474 int scan_channel_idx;
475 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
476 unsigned long last_scan_completed;
477 struct delayed_work scan_work;
478 struct net_device *scan_dev;
479 struct ieee80211_channel *oper_channel, *scan_channel;
480 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
481 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
482 size_t scan_ssid_len;
483 struct list_head sta_bss_list;
484 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
485 spinlock_t sta_bss_lock;
486 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
487 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
488 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
489 int scan_flags;
490
491 /* SNMP counters */
492 /* dot11CountersTable */
493 u32 dot11TransmittedFragmentCount;
494 u32 dot11MulticastTransmittedFrameCount;
495 u32 dot11FailedCount;
496 u32 dot11RetryCount;
497 u32 dot11MultipleRetryCount;
498 u32 dot11FrameDuplicateCount;
499 u32 dot11ReceivedFragmentCount;
500 u32 dot11MulticastReceivedFrameCount;
501 u32 dot11TransmittedFrameCount;
502 u32 dot11WEPUndecryptableCount;
503
504 #ifdef CONFIG_MAC80211_LEDS
505 int tx_led_counter, rx_led_counter;
506 struct led_trigger *tx_led, *rx_led, *assoc_led;
507 char tx_led_name[32], rx_led_name[32], assoc_led_name[32];
508 #endif
509
510 u32 channel_use;
511 u32 channel_use_raw;
512
513 #ifdef CONFIG_MAC80211_DEBUGFS
514 struct work_struct sta_debugfs_add;
515 #endif
516
517 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
518 /* TX/RX handler statistics */
519 unsigned int tx_handlers_drop;
520 unsigned int tx_handlers_queued;
521 unsigned int tx_handlers_drop_unencrypted;
522 unsigned int tx_handlers_drop_fragment;
523 unsigned int tx_handlers_drop_wep;
524 unsigned int tx_handlers_drop_not_assoc;
525 unsigned int tx_handlers_drop_unauth_port;
526 unsigned int rx_handlers_drop;
527 unsigned int rx_handlers_queued;
528 unsigned int rx_handlers_drop_nullfunc;
529 unsigned int rx_handlers_drop_defrag;
530 unsigned int rx_handlers_drop_short;
531 unsigned int rx_handlers_drop_passive_scan;
532 unsigned int tx_expand_skb_head;
533 unsigned int tx_expand_skb_head_cloned;
534 unsigned int rx_expand_skb_head;
535 unsigned int rx_expand_skb_head2;
536 unsigned int rx_handlers_fragments;
537 unsigned int tx_status_drop;
538 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
539 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
540 #define I802_DEBUG_INC(c) (c)++
541 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
542 #define I802_DEBUG_INC(c) do { } while (0)
543 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
544
545
546 int total_ps_buffered; /* total number of all buffered unicast and
547 * multicast packets for power saving stations
548 */
549 int wifi_wme_noack_test;
550 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
551
552 unsigned int enabled_modes; /* bitfield of allowed modes;
553 * (1 << MODE_*) */
554 unsigned int hw_modes; /* bitfield of supported hardware modes;
555 * (1 << MODE_*) */
556
557 #ifdef CONFIG_MAC80211_DEBUGFS
558 struct local_debugfsdentries {
559 struct dentry *channel;
560 struct dentry *frequency;
561 struct dentry *antenna_sel_tx;
562 struct dentry *antenna_sel_rx;
563 struct dentry *bridge_packets;
564 struct dentry *rts_threshold;
565 struct dentry *fragmentation_threshold;
566 struct dentry *short_retry_limit;
567 struct dentry *long_retry_limit;
568 struct dentry *total_ps_buffered;
569 struct dentry *mode;
570 struct dentry *wep_iv;
571 struct dentry *modes;
572 struct dentry *statistics;
573 struct local_debugfsdentries_statsdentries {
574 struct dentry *transmitted_fragment_count;
575 struct dentry *multicast_transmitted_frame_count;
576 struct dentry *failed_count;
577 struct dentry *retry_count;
578 struct dentry *multiple_retry_count;
579 struct dentry *frame_duplicate_count;
580 struct dentry *received_fragment_count;
581 struct dentry *multicast_received_frame_count;
582 struct dentry *transmitted_frame_count;
583 struct dentry *wep_undecryptable_count;
584 struct dentry *num_scans;
585 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
586 struct dentry *tx_handlers_drop;
587 struct dentry *tx_handlers_queued;
588 struct dentry *tx_handlers_drop_unencrypted;
589 struct dentry *tx_handlers_drop_fragment;
590 struct dentry *tx_handlers_drop_wep;
591 struct dentry *tx_handlers_drop_not_assoc;
592 struct dentry *tx_handlers_drop_unauth_port;
593 struct dentry *rx_handlers_drop;
594 struct dentry *rx_handlers_queued;
595 struct dentry *rx_handlers_drop_nullfunc;
596 struct dentry *rx_handlers_drop_defrag;
597 struct dentry *rx_handlers_drop_short;
598 struct dentry *rx_handlers_drop_passive_scan;
599 struct dentry *tx_expand_skb_head;
600 struct dentry *tx_expand_skb_head_cloned;
601 struct dentry *rx_expand_skb_head;
602 struct dentry *rx_expand_skb_head2;
603 struct dentry *rx_handlers_fragments;
604 struct dentry *tx_status_drop;
605 struct dentry *wme_tx_queue;
606 struct dentry *wme_rx_queue;
607 #endif
608 struct dentry *dot11ACKFailureCount;
609 struct dentry *dot11RTSFailureCount;
610 struct dentry *dot11FCSErrorCount;
611 struct dentry *dot11RTSSuccessCount;
612 } stats;
613 struct dentry *stations;
614 struct dentry *keys;
615 } debugfs;
616 #endif
617 };
618
619 static inline struct ieee80211_local *hw_to_local(
620 struct ieee80211_hw *hw)
621 {
622 return container_of(hw, struct ieee80211_local, hw);
623 }
624
625 static inline struct ieee80211_hw *local_to_hw(
626 struct ieee80211_local *local)
627 {
628 return &local->hw;
629 }
630
631 enum ieee80211_link_state_t {
632 IEEE80211_LINK_STATE_XOFF = 0,
633 IEEE80211_LINK_STATE_PENDING,
634 };
635
636 struct sta_attribute {
637 struct attribute attr;
638 ssize_t (*show)(const struct sta_info *, char *buf);
639 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
640 };
641
642 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
643 {
644 /*
645 * This format has been mandated by the IEEE specifications,
646 * so this line may not be changed to use the __set_bit() format.
647 */
648 bss->tim[aid / 8] |= (1 << (aid % 8));
649 }
650
651 static inline void bss_tim_set(struct ieee80211_local *local,
652 struct ieee80211_if_ap *bss, u16 aid)
653 {
654 read_lock_bh(&local->sta_lock);
655 __bss_tim_set(bss, aid);
656 read_unlock_bh(&local->sta_lock);
657 }
658
659 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
660 {
661 /*
662 * This format has been mandated by the IEEE specifications,
663 * so this line may not be changed to use the __clear_bit() format.
664 */
665 bss->tim[aid / 8] &= ~(1 << (aid % 8));
666 }
667
668 static inline void bss_tim_clear(struct ieee80211_local *local,
669 struct ieee80211_if_ap *bss, u16 aid)
670 {
671 read_lock_bh(&local->sta_lock);
672 __bss_tim_clear(bss, aid);
673 read_unlock_bh(&local->sta_lock);
674 }
675
676 /**
677 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
678 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
679 * @rate: Transmission rate to check, in 100 kbps
680 *
681 * Check if a given rate is an Extended Rate PHY (ERP) rate.
682 */
683 static inline int ieee80211_is_erp_rate(int phymode, int rate)
684 {
685 if (phymode == MODE_IEEE80211G) {
686 if (rate != 10 && rate != 20 &&
687 rate != 55 && rate != 110)
688 return 1;
689 }
690 return 0;
691 }
692
693 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
694 {
695 return compare_ether_addr(raddr, addr) == 0 ||
696 is_broadcast_ether_addr(raddr);
697 }
698
699
700 /* ieee80211.c */
701 int ieee80211_hw_config(struct ieee80211_local *local);
702 int ieee80211_if_config(struct net_device *dev);
703 int ieee80211_if_config_beacon(struct net_device *dev);
704 void ieee80211_prepare_rates(struct ieee80211_local *local,
705 struct ieee80211_hw_mode *mode);
706 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
707 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
708 void ieee80211_if_setup(struct net_device *dev);
709 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
710 int phymode, int hwrate);
711
712 /* ieee80211_ioctl.c */
713 extern const struct iw_handler_def ieee80211_iw_handler_def;
714
715
716 /* Least common multiple of the used rates (in 100 kbps). This is used to
717 * calculate rate_inv values for each rate so that only integers are needed. */
718 #define CHAN_UTIL_RATE_LCM 95040
719 /* 1 usec is 1/8 * (95040/10) = 1188 */
720 #define CHAN_UTIL_PER_USEC 1188
721 /* Amount of bits to shift the result right to scale the total utilization
722 * to values that will not wrap around 32-bit integers. */
723 #define CHAN_UTIL_SHIFT 9
724 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
725 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
726 * raw value with about 23 should give utilization in 10th of a percentage
727 * (1/1000). However, utilization is only estimated and not all intervals
728 * between frames etc. are calculated. 18 seems to give numbers that are closer
729 * to the real maximum. */
730 #define CHAN_UTIL_PER_10MS 18
731 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
732 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
733
734
735 /* ieee80211_ioctl.c */
736 int ieee80211_set_compression(struct ieee80211_local *local,
737 struct net_device *dev, struct sta_info *sta);
738 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
739 /* ieee80211_sta.c */
740 void ieee80211_sta_timer(unsigned long data);
741 void ieee80211_sta_work(struct work_struct *work);
742 void ieee80211_sta_scan_work(struct work_struct *work);
743 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
744 struct ieee80211_rx_status *rx_status);
745 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
746 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
747 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
748 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
749 void ieee80211_sta_req_auth(struct net_device *dev,
750 struct ieee80211_if_sta *ifsta);
751 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
752 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
753 struct ieee80211_rx_status *rx_status);
754 void ieee80211_rx_bss_list_init(struct net_device *dev);
755 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
756 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
757 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
758 struct sk_buff *skb, u8 *bssid,
759 u8 *addr);
760 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
761 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
762 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes);
763 void ieee80211_reset_erp_info(struct net_device *dev);
764
765 /* ieee80211_iface.c */
766 int ieee80211_if_add(struct net_device *dev, const char *name,
767 struct net_device **new_dev, int type);
768 void ieee80211_if_set_type(struct net_device *dev, int type);
769 void ieee80211_if_reinit(struct net_device *dev);
770 void __ieee80211_if_del(struct ieee80211_local *local,
771 struct ieee80211_sub_if_data *sdata);
772 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
773 void ieee80211_if_free(struct net_device *dev);
774 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
775
776 /* regdomain.c */
777 void ieee80211_regdomain_init(void);
778 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
779
780 /* rx handling */
781 extern ieee80211_rx_handler ieee80211_rx_pre_handlers[];
782 extern ieee80211_rx_handler ieee80211_rx_handlers[];
783
784 /* tx handling */
785 extern ieee80211_tx_handler ieee80211_tx_handlers[];
786 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
787 void ieee80211_tx_pending(unsigned long data);
788 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
789 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
790 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
791
792 /* utility functions/constants */
793 extern void *mac80211_wiphy_privid; /* for wiphy privid */
794 extern const unsigned char rfc1042_header[6];
795 extern const unsigned char bridge_tunnel_header[6];
796 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
797 int ieee80211_is_eapol(const struct sk_buff *skb);
798 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
799 int rate, int erp, int short_preamble);
800 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
801 struct ieee80211_hdr *hdr);
802
803 #endif /* IEEE80211_I_H */