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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 | * | |
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 <net/wireless.h> | |
25 | #include "ieee80211_key.h" | |
26 | #include "sta_info.h" | |
27 | ||
28 | /* ieee80211.o internal definitions, etc. These are not included into | |
29 | * low-level drivers. */ | |
30 | ||
31 | #ifndef ETH_P_PAE | |
32 | #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ | |
33 | #endif /* ETH_P_PAE */ | |
34 | ||
35 | #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08) | |
36 | ||
37 | struct ieee80211_local; | |
38 | ||
39 | #define BIT(x) (1 << (x)) | |
40 | ||
41 | #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) | |
42 | ||
43 | /* Maximum number of broadcast/multicast frames to buffer when some of the | |
44 | * associated stations are using power saving. */ | |
45 | #define AP_MAX_BC_BUFFER 128 | |
46 | ||
47 | /* Maximum number of frames buffered to all STAs, including multicast frames. | |
48 | * Note: increasing this limit increases the potential memory requirement. Each | |
49 | * frame can be up to about 2 kB long. */ | |
50 | #define TOTAL_MAX_TX_BUFFER 512 | |
51 | ||
52 | /* Required encryption head and tailroom */ | |
53 | #define IEEE80211_ENCRYPT_HEADROOM 8 | |
54 | #define IEEE80211_ENCRYPT_TAILROOM 12 | |
55 | ||
56 | /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent | |
57 | * reception of at least three fragmented frames. This limit can be increased | |
58 | * by changing this define, at the cost of slower frame reassembly and | |
59 | * increased memory use (about 2 kB of RAM per entry). */ | |
60 | #define IEEE80211_FRAGMENT_MAX 4 | |
61 | ||
62 | struct 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 | ||
74 | struct ieee80211_sta_bss { | |
75 | struct list_head list; | |
76 | struct ieee80211_sta_bss *hnext; | |
77 | atomic_t users; | |
78 | ||
79 | u8 bssid[ETH_ALEN]; | |
80 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
81 | size_t ssid_len; | |
82 | u16 capability; /* host byte order */ | |
83 | int hw_mode; | |
84 | int channel; | |
85 | int freq; | |
86 | int rssi, signal, noise; | |
87 | u8 *wpa_ie; | |
88 | size_t wpa_ie_len; | |
89 | u8 *rsn_ie; | |
90 | size_t rsn_ie_len; | |
91 | u8 *wmm_ie; | |
92 | size_t wmm_ie_len; | |
93 | #define IEEE80211_MAX_SUPP_RATES 32 | |
94 | u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; | |
95 | size_t supp_rates_len; | |
96 | int beacon_int; | |
97 | u64 timestamp; | |
98 | ||
99 | int probe_resp; | |
100 | unsigned long last_update; | |
101 | ||
102 | }; | |
103 | ||
104 | ||
105 | typedef enum { | |
106 | TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED | |
107 | } ieee80211_txrx_result; | |
108 | ||
109 | struct ieee80211_txrx_data { | |
110 | struct sk_buff *skb; | |
111 | struct net_device *dev; | |
112 | struct ieee80211_local *local; | |
113 | struct ieee80211_sub_if_data *sdata; | |
114 | struct sta_info *sta; | |
115 | u16 fc, ethertype; | |
116 | struct ieee80211_key *key; | |
117 | unsigned int fragmented:1; /* whether the MSDU was fragmented */ | |
118 | union { | |
119 | struct { | |
120 | struct ieee80211_tx_control *control; | |
121 | unsigned int unicast:1; | |
122 | unsigned int ps_buffered:1; | |
123 | unsigned int short_preamble:1; | |
124 | unsigned int probe_last_frag:1; | |
125 | struct ieee80211_hw_mode *mode; | |
126 | struct ieee80211_rate *rate; | |
127 | /* use this rate (if set) for last fragment; rate can | |
128 | * be set to lower rate for the first fragments, e.g., | |
129 | * when using CTS protection with IEEE 802.11g. */ | |
130 | struct ieee80211_rate *last_frag_rate; | |
131 | int last_frag_hwrate; | |
132 | int mgmt_interface; | |
133 | ||
134 | /* Extra fragments (in addition to the first fragment | |
135 | * in skb) */ | |
136 | int num_extra_frag; | |
137 | struct sk_buff **extra_frag; | |
138 | } tx; | |
139 | struct { | |
140 | struct ieee80211_rx_status *status; | |
141 | int sent_ps_buffered; | |
142 | int queue; | |
143 | int load; | |
144 | unsigned int in_scan:1; | |
145 | /* frame is destined to interface currently processed | |
146 | * (including multicast frames) */ | |
147 | unsigned int ra_match:1; | |
148 | } rx; | |
149 | } u; | |
150 | }; | |
151 | ||
152 | /* Stored in sk_buff->cb */ | |
153 | struct ieee80211_tx_packet_data { | |
154 | int ifindex; | |
155 | unsigned long jiffies; | |
156 | unsigned int req_tx_status:1; | |
157 | unsigned int do_not_encrypt:1; | |
158 | unsigned int requeue:1; | |
159 | unsigned int mgmt_iface:1; | |
160 | unsigned int queue:4; | |
161 | }; | |
162 | ||
163 | struct ieee80211_tx_stored_packet { | |
164 | struct ieee80211_tx_control control; | |
165 | struct sk_buff *skb; | |
166 | int num_extra_frag; | |
167 | struct sk_buff **extra_frag; | |
168 | int last_frag_rateidx; | |
169 | int last_frag_hwrate; | |
170 | struct ieee80211_rate *last_frag_rate; | |
171 | unsigned int last_frag_rate_ctrl_probe:1; | |
172 | }; | |
173 | ||
174 | typedef ieee80211_txrx_result (*ieee80211_tx_handler) | |
175 | (struct ieee80211_txrx_data *tx); | |
176 | ||
177 | typedef ieee80211_txrx_result (*ieee80211_rx_handler) | |
178 | (struct ieee80211_txrx_data *rx); | |
179 | ||
180 | struct ieee80211_if_ap { | |
181 | u8 *beacon_head, *beacon_tail; | |
182 | int beacon_head_len, beacon_tail_len; | |
183 | ||
184 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
185 | size_t ssid_len; | |
186 | u8 *generic_elem; | |
187 | size_t generic_elem_len; | |
188 | ||
189 | /* yes, this looks ugly, but guarantees that we can later use | |
190 | * bitmap_empty :) | |
191 | * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ | |
192 | u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; | |
193 | atomic_t num_sta_ps; /* number of stations in PS mode */ | |
194 | struct sk_buff_head ps_bc_buf; | |
195 | int dtim_period, dtim_count; | |
196 | int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ | |
197 | int max_ratectrl_rateidx; /* max TX rateidx for rate control */ | |
198 | int num_beacons; /* number of TXed beacon frames for this BSS */ | |
199 | }; | |
200 | ||
201 | struct ieee80211_if_wds { | |
202 | u8 remote_addr[ETH_ALEN]; | |
203 | struct sta_info *sta; | |
204 | }; | |
205 | ||
206 | struct ieee80211_if_vlan { | |
207 | u8 id; | |
208 | }; | |
209 | ||
210 | struct ieee80211_if_sta { | |
211 | enum { | |
212 | IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, | |
213 | IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, | |
214 | IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED | |
215 | } state; | |
216 | struct timer_list timer; | |
217 | struct work_struct work; | |
218 | u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; | |
219 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
220 | size_t ssid_len; | |
221 | u16 aid; | |
222 | u16 ap_capab, capab; | |
223 | u8 *extra_ie; /* to be added to the end of AssocReq */ | |
224 | size_t extra_ie_len; | |
225 | ||
226 | /* The last AssocReq/Resp IEs */ | |
227 | u8 *assocreq_ies, *assocresp_ies; | |
228 | size_t assocreq_ies_len, assocresp_ies_len; | |
229 | ||
230 | int auth_tries, assoc_tries; | |
231 | ||
232 | unsigned int ssid_set:1; | |
233 | unsigned int bssid_set:1; | |
234 | unsigned int prev_bssid_set:1; | |
235 | unsigned int authenticated:1; | |
236 | unsigned int associated:1; | |
237 | unsigned int probereq_poll:1; | |
238 | unsigned int use_protection:1; | |
239 | unsigned int create_ibss:1; | |
240 | unsigned int mixed_cell:1; | |
241 | unsigned int wmm_enabled:1; | |
242 | unsigned int auto_ssid_sel:1; | |
243 | unsigned int auto_bssid_sel:1; | |
244 | unsigned int auto_channel_sel:1; | |
245 | #define IEEE80211_STA_REQ_SCAN 0 | |
246 | #define IEEE80211_STA_REQ_AUTH 1 | |
247 | #define IEEE80211_STA_REQ_RUN 2 | |
248 | unsigned long request; | |
249 | struct sk_buff_head skb_queue; | |
250 | ||
251 | int key_mgmt; | |
252 | unsigned long last_probe; | |
253 | ||
254 | #define IEEE80211_AUTH_ALG_OPEN BIT(0) | |
255 | #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) | |
256 | #define IEEE80211_AUTH_ALG_LEAP BIT(2) | |
257 | unsigned int auth_algs; /* bitfield of allowed auth algs */ | |
258 | int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ | |
259 | int auth_transaction; | |
260 | ||
261 | unsigned long ibss_join_req; | |
262 | struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ | |
263 | u32 supp_rates_bits; | |
264 | ||
265 | int wmm_last_param_set; | |
266 | }; | |
267 | ||
268 | ||
269 | struct ieee80211_sub_if_data { | |
270 | struct list_head list; | |
271 | unsigned int type; | |
272 | ||
273 | struct wireless_dev wdev; | |
274 | ||
275 | struct net_device *dev; | |
276 | struct ieee80211_local *local; | |
277 | ||
278 | int mc_count; | |
279 | unsigned int allmulti:1; | |
280 | unsigned int promisc:1; | |
281 | ||
282 | struct net_device_stats stats; | |
283 | int drop_unencrypted; | |
284 | int eapol; /* 0 = process EAPOL frames as normal data frames, | |
285 | * 1 = send EAPOL frames through wlan#ap to hostapd | |
286 | * (default) */ | |
287 | int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized | |
288 | * port */ | |
289 | ||
290 | u16 sequence; | |
291 | ||
292 | /* Fragment table for host-based reassembly */ | |
293 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; | |
294 | unsigned int fragment_next; | |
295 | ||
296 | #define NUM_DEFAULT_KEYS 4 | |
297 | struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; | |
298 | struct ieee80211_key *default_key; | |
299 | ||
300 | struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ | |
301 | ||
302 | union { | |
303 | struct ieee80211_if_ap ap; | |
304 | struct ieee80211_if_wds wds; | |
305 | struct ieee80211_if_vlan vlan; | |
306 | struct ieee80211_if_sta sta; | |
307 | } u; | |
308 | int channel_use; | |
309 | int channel_use_raw; | |
310 | ||
311 | #ifdef CONFIG_MAC80211_DEBUGFS | |
312 | struct dentry *debugfsdir; | |
313 | union { | |
314 | struct { | |
315 | struct dentry *channel_use; | |
316 | struct dentry *drop_unencrypted; | |
317 | struct dentry *eapol; | |
318 | struct dentry *ieee8021_x; | |
319 | struct dentry *state; | |
320 | struct dentry *bssid; | |
321 | struct dentry *prev_bssid; | |
322 | struct dentry *ssid_len; | |
323 | struct dentry *aid; | |
324 | struct dentry *ap_capab; | |
325 | struct dentry *capab; | |
326 | struct dentry *extra_ie_len; | |
327 | struct dentry *auth_tries; | |
328 | struct dentry *assoc_tries; | |
329 | struct dentry *auth_algs; | |
330 | struct dentry *auth_alg; | |
331 | struct dentry *auth_transaction; | |
332 | struct dentry *flags; | |
333 | } sta; | |
334 | struct { | |
335 | struct dentry *channel_use; | |
336 | struct dentry *drop_unencrypted; | |
337 | struct dentry *eapol; | |
338 | struct dentry *ieee8021_x; | |
339 | struct dentry *num_sta_ps; | |
340 | struct dentry *dtim_period; | |
341 | struct dentry *dtim_count; | |
342 | struct dentry *num_beacons; | |
343 | struct dentry *force_unicast_rateidx; | |
344 | struct dentry *max_ratectrl_rateidx; | |
345 | struct dentry *num_buffered_multicast; | |
346 | struct dentry *beacon_head_len; | |
347 | struct dentry *beacon_tail_len; | |
348 | } ap; | |
349 | struct { | |
350 | struct dentry *channel_use; | |
351 | struct dentry *drop_unencrypted; | |
352 | struct dentry *eapol; | |
353 | struct dentry *ieee8021_x; | |
354 | struct dentry *peer; | |
355 | } wds; | |
356 | struct { | |
357 | struct dentry *channel_use; | |
358 | struct dentry *drop_unencrypted; | |
359 | struct dentry *eapol; | |
360 | struct dentry *ieee8021_x; | |
361 | struct dentry *vlan_id; | |
362 | } vlan; | |
363 | struct { | |
364 | struct dentry *mode; | |
365 | } monitor; | |
366 | struct dentry *default_key; | |
367 | } debugfs; | |
368 | #endif | |
369 | }; | |
370 | ||
371 | #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) | |
372 | ||
373 | enum { | |
374 | IEEE80211_RX_MSG = 1, | |
375 | IEEE80211_TX_STATUS_MSG = 2, | |
376 | }; | |
377 | ||
378 | struct ieee80211_local { | |
379 | /* embed the driver visible part. | |
380 | * don't cast (use the static inlines below), but we keep | |
381 | * it first anyway so they become a no-op */ | |
382 | struct ieee80211_hw hw; | |
383 | ||
384 | const struct ieee80211_ops *ops; | |
385 | ||
386 | /* List of registered struct ieee80211_hw_mode */ | |
387 | struct list_head modes_list; | |
388 | ||
389 | struct net_device *mdev; /* wmaster# - "master" 802.11 device */ | |
390 | struct net_device *apdev; /* wlan#ap - management frames (hostapd) */ | |
391 | int open_count; | |
392 | int monitors; | |
393 | struct iw_statistics wstats; | |
394 | u8 wstats_flags; | |
395 | ||
396 | enum { | |
397 | IEEE80211_DEV_UNINITIALIZED = 0, | |
398 | IEEE80211_DEV_REGISTERED, | |
399 | IEEE80211_DEV_UNREGISTERED, | |
400 | } reg_state; | |
401 | ||
402 | /* Tasklet and skb queue to process calls from IRQ mode. All frames | |
403 | * added to skb_queue will be processed, but frames in | |
404 | * skb_queue_unreliable may be dropped if the total length of these | |
405 | * queues increases over the limit. */ | |
406 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 | |
407 | struct tasklet_struct tasklet; | |
408 | struct sk_buff_head skb_queue; | |
409 | struct sk_buff_head skb_queue_unreliable; | |
410 | ||
411 | /* Station data structures */ | |
412 | spinlock_t sta_lock; /* mutex for STA data structures */ | |
413 | int num_sta; /* number of stations in sta_list */ | |
414 | struct list_head sta_list; | |
415 | struct list_head deleted_sta_list; | |
416 | struct sta_info *sta_hash[STA_HASH_SIZE]; | |
417 | struct timer_list sta_cleanup; | |
418 | ||
419 | unsigned long state[NUM_TX_DATA_QUEUES]; | |
420 | struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; | |
421 | struct tasklet_struct tx_pending_tasklet; | |
422 | ||
423 | int mc_count; /* total count of multicast entries in all interfaces */ | |
424 | int iff_allmultis, iff_promiscs; | |
425 | /* number of interfaces with corresponding IFF_ flags */ | |
426 | ||
427 | struct rate_control_ref *rate_ctrl; | |
428 | ||
429 | int next_mode; /* MODE_IEEE80211* | |
430 | * The mode preference for next channel change. This is | |
431 | * used to select .11g vs. .11b channels (or 4.9 GHz vs. | |
432 | * .11a) when the channel number is not unique. */ | |
433 | ||
434 | /* Supported and basic rate filters for different modes. These are | |
435 | * pointers to -1 terminated lists and rates in 100 kbps units. */ | |
436 | int *supp_rates[NUM_IEEE80211_MODES]; | |
437 | int *basic_rates[NUM_IEEE80211_MODES]; | |
438 | ||
439 | int rts_threshold; | |
440 | int cts_protect_erp_frames; | |
441 | int fragmentation_threshold; | |
442 | int short_retry_limit; /* dot11ShortRetryLimit */ | |
443 | int long_retry_limit; /* dot11LongRetryLimit */ | |
444 | int short_preamble; /* use short preamble with IEEE 802.11b */ | |
445 | ||
446 | struct crypto_blkcipher *wep_tx_tfm; | |
447 | struct crypto_blkcipher *wep_rx_tfm; | |
448 | u32 wep_iv; | |
449 | int key_tx_rx_threshold; /* number of times any key can be used in TX | |
450 | * or RX before generating a rekey | |
451 | * notification; 0 = notification disabled. */ | |
452 | ||
453 | int bridge_packets; /* bridge packets between associated stations and | |
454 | * deliver multicast frames both back to wireless | |
455 | * media and to the local net stack */ | |
456 | ||
457 | ieee80211_rx_handler *rx_pre_handlers; | |
458 | ieee80211_rx_handler *rx_handlers; | |
459 | ieee80211_tx_handler *tx_handlers; | |
460 | ||
461 | rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under | |
462 | * sta_bss_lock or sta_lock. */ | |
463 | struct list_head sub_if_list; | |
464 | int sta_scanning; | |
465 | int scan_channel_idx; | |
466 | enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; | |
467 | unsigned long last_scan_completed; | |
468 | struct delayed_work scan_work; | |
469 | struct net_device *scan_dev; | |
470 | struct ieee80211_channel *oper_channel, *scan_channel; | |
471 | struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; | |
472 | u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; | |
473 | size_t scan_ssid_len; | |
474 | struct list_head sta_bss_list; | |
475 | struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; | |
476 | spinlock_t sta_bss_lock; | |
477 | #define IEEE80211_SCAN_MATCH_SSID BIT(0) | |
478 | #define IEEE80211_SCAN_WPA_ONLY BIT(1) | |
479 | #define IEEE80211_SCAN_EXTRA_INFO BIT(2) | |
480 | int scan_flags; | |
481 | ||
482 | /* SNMP counters */ | |
483 | /* dot11CountersTable */ | |
484 | u32 dot11TransmittedFragmentCount; | |
485 | u32 dot11MulticastTransmittedFrameCount; | |
486 | u32 dot11FailedCount; | |
487 | u32 dot11RetryCount; | |
488 | u32 dot11MultipleRetryCount; | |
489 | u32 dot11FrameDuplicateCount; | |
490 | u32 dot11ReceivedFragmentCount; | |
491 | u32 dot11MulticastReceivedFrameCount; | |
492 | u32 dot11TransmittedFrameCount; | |
493 | u32 dot11WEPUndecryptableCount; | |
494 | ||
495 | #ifdef CONFIG_MAC80211_LEDS | |
496 | int tx_led_counter, rx_led_counter; | |
497 | struct led_trigger *tx_led, *rx_led; | |
498 | char tx_led_name[32], rx_led_name[32]; | |
499 | #endif | |
500 | ||
501 | u32 channel_use; | |
502 | u32 channel_use_raw; | |
503 | u32 stat_time; | |
504 | struct timer_list stat_timer; | |
505 | ||
506 | #ifdef CONFIG_MAC80211_DEBUGFS | |
507 | struct work_struct sta_debugfs_add; | |
508 | #endif | |
509 | ||
510 | enum { | |
511 | STA_ANTENNA_SEL_AUTO = 0, | |
512 | STA_ANTENNA_SEL_SW_CTRL = 1, | |
513 | STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2 | |
514 | } sta_antenna_sel; | |
515 | ||
516 | int rate_ctrl_num_up, rate_ctrl_num_down; | |
517 | ||
518 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
519 | /* TX/RX handler statistics */ | |
520 | unsigned int tx_handlers_drop; | |
521 | unsigned int tx_handlers_queued; | |
522 | unsigned int tx_handlers_drop_unencrypted; | |
523 | unsigned int tx_handlers_drop_fragment; | |
524 | unsigned int tx_handlers_drop_wep; | |
525 | unsigned int tx_handlers_drop_not_assoc; | |
526 | unsigned int tx_handlers_drop_unauth_port; | |
527 | unsigned int rx_handlers_drop; | |
528 | unsigned int rx_handlers_queued; | |
529 | unsigned int rx_handlers_drop_nullfunc; | |
530 | unsigned int rx_handlers_drop_defrag; | |
531 | unsigned int rx_handlers_drop_short; | |
532 | unsigned int rx_handlers_drop_passive_scan; | |
533 | unsigned int tx_expand_skb_head; | |
534 | unsigned int tx_expand_skb_head_cloned; | |
535 | unsigned int rx_expand_skb_head; | |
536 | unsigned int rx_expand_skb_head2; | |
537 | unsigned int rx_handlers_fragments; | |
538 | unsigned int tx_status_drop; | |
539 | unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; | |
540 | unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; | |
541 | #define I802_DEBUG_INC(c) (c)++ | |
542 | #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
543 | #define I802_DEBUG_INC(c) do { } while (0) | |
544 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ | |
545 | ||
546 | ||
547 | int default_wep_only; /* only default WEP keys are used with this | |
548 | * interface; this is used to decide when hwaccel | |
549 | * can be used with default keys */ | |
550 | int total_ps_buffered; /* total number of all buffered unicast and | |
551 | * multicast packets for power saving stations | |
552 | */ | |
553 | int allow_broadcast_always; /* whether to allow TX of broadcast frames | |
554 | * even when there are no associated STAs | |
555 | */ | |
556 | ||
557 | int wifi_wme_noack_test; | |
558 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ | |
559 | ||
560 | unsigned int enabled_modes; /* bitfield of allowed modes; | |
561 | * (1 << MODE_*) */ | |
562 | unsigned int hw_modes; /* bitfield of supported hardware modes; | |
563 | * (1 << MODE_*) */ | |
564 | ||
565 | int user_space_mlme; | |
566 | ||
567 | #ifdef CONFIG_MAC80211_DEBUGFS | |
568 | struct local_debugfsdentries { | |
569 | struct dentry *channel; | |
570 | struct dentry *frequency; | |
571 | struct dentry *radar_detect; | |
572 | struct dentry *antenna_sel_tx; | |
573 | struct dentry *antenna_sel_rx; | |
574 | struct dentry *bridge_packets; | |
575 | struct dentry *key_tx_rx_threshold; | |
576 | struct dentry *rts_threshold; | |
577 | struct dentry *fragmentation_threshold; | |
578 | struct dentry *short_retry_limit; | |
579 | struct dentry *long_retry_limit; | |
580 | struct dentry *total_ps_buffered; | |
581 | struct dentry *mode; | |
582 | struct dentry *wep_iv; | |
583 | struct dentry *tx_power_reduction; | |
584 | struct dentry *modes; | |
585 | struct dentry *statistics; | |
586 | struct local_debugfsdentries_statsdentries { | |
587 | struct dentry *transmitted_fragment_count; | |
588 | struct dentry *multicast_transmitted_frame_count; | |
589 | struct dentry *failed_count; | |
590 | struct dentry *retry_count; | |
591 | struct dentry *multiple_retry_count; | |
592 | struct dentry *frame_duplicate_count; | |
593 | struct dentry *received_fragment_count; | |
594 | struct dentry *multicast_received_frame_count; | |
595 | struct dentry *transmitted_frame_count; | |
596 | struct dentry *wep_undecryptable_count; | |
597 | struct dentry *num_scans; | |
598 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
599 | struct dentry *tx_handlers_drop; | |
600 | struct dentry *tx_handlers_queued; | |
601 | struct dentry *tx_handlers_drop_unencrypted; | |
602 | struct dentry *tx_handlers_drop_fragment; | |
603 | struct dentry *tx_handlers_drop_wep; | |
604 | struct dentry *tx_handlers_drop_not_assoc; | |
605 | struct dentry *tx_handlers_drop_unauth_port; | |
606 | struct dentry *rx_handlers_drop; | |
607 | struct dentry *rx_handlers_queued; | |
608 | struct dentry *rx_handlers_drop_nullfunc; | |
609 | struct dentry *rx_handlers_drop_defrag; | |
610 | struct dentry *rx_handlers_drop_short; | |
611 | struct dentry *rx_handlers_drop_passive_scan; | |
612 | struct dentry *tx_expand_skb_head; | |
613 | struct dentry *tx_expand_skb_head_cloned; | |
614 | struct dentry *rx_expand_skb_head; | |
615 | struct dentry *rx_expand_skb_head2; | |
616 | struct dentry *rx_handlers_fragments; | |
617 | struct dentry *tx_status_drop; | |
618 | struct dentry *wme_tx_queue; | |
619 | struct dentry *wme_rx_queue; | |
620 | #endif | |
621 | struct dentry *dot11ACKFailureCount; | |
622 | struct dentry *dot11RTSFailureCount; | |
623 | struct dentry *dot11FCSErrorCount; | |
624 | struct dentry *dot11RTSSuccessCount; | |
625 | } stats; | |
626 | struct dentry *stations; | |
627 | struct dentry *keys; | |
628 | } debugfs; | |
629 | #endif | |
630 | }; | |
631 | ||
632 | static inline struct ieee80211_local *hw_to_local( | |
633 | struct ieee80211_hw *hw) | |
634 | { | |
635 | return container_of(hw, struct ieee80211_local, hw); | |
636 | } | |
637 | ||
638 | static inline struct ieee80211_hw *local_to_hw( | |
639 | struct ieee80211_local *local) | |
640 | { | |
641 | return &local->hw; | |
642 | } | |
643 | ||
644 | enum ieee80211_link_state_t { | |
645 | IEEE80211_LINK_STATE_XOFF = 0, | |
646 | IEEE80211_LINK_STATE_PENDING, | |
647 | }; | |
648 | ||
649 | struct sta_attribute { | |
650 | struct attribute attr; | |
651 | ssize_t (*show)(const struct sta_info *, char *buf); | |
652 | ssize_t (*store)(struct sta_info *, const char *buf, size_t count); | |
653 | }; | |
654 | ||
655 | static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid) | |
656 | { | |
657 | /* | |
658 | * This format has ben mandated by the IEEE specifications, | |
659 | * so this line may not be changed to use the __set_bit() format. | |
660 | */ | |
661 | bss->tim[(aid)/8] |= 1<<((aid) % 8); | |
662 | } | |
663 | ||
664 | static inline void bss_tim_set(struct ieee80211_local *local, | |
665 | struct ieee80211_if_ap *bss, int aid) | |
666 | { | |
667 | spin_lock_bh(&local->sta_lock); | |
668 | __bss_tim_set(bss, aid); | |
669 | spin_unlock_bh(&local->sta_lock); | |
670 | } | |
671 | ||
672 | static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid) | |
673 | { | |
674 | /* | |
675 | * This format has ben mandated by the IEEE specifications, | |
676 | * so this line may not be changed to use the __clear_bit() format. | |
677 | */ | |
678 | bss->tim[(aid)/8] &= !(1<<((aid) % 8)); | |
679 | } | |
680 | ||
681 | static inline void bss_tim_clear(struct ieee80211_local *local, | |
682 | struct ieee80211_if_ap *bss, int aid) | |
683 | { | |
684 | spin_lock_bh(&local->sta_lock); | |
685 | __bss_tim_clear(bss, aid); | |
686 | spin_unlock_bh(&local->sta_lock); | |
687 | } | |
688 | ||
689 | /** | |
690 | * ieee80211_is_erp_rate - Check if a rate is an ERP rate | |
691 | * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) | |
692 | * @rate: Transmission rate to check, in 100 kbps | |
693 | * | |
694 | * Check if a given rate is an Extended Rate PHY (ERP) rate. | |
695 | */ | |
696 | static inline int ieee80211_is_erp_rate(int phymode, int rate) | |
697 | { | |
698 | if (phymode == MODE_IEEE80211G) { | |
699 | if (rate != 10 && rate != 20 && | |
700 | rate != 55 && rate != 110) | |
701 | return 1; | |
702 | } | |
703 | return 0; | |
704 | } | |
705 | ||
706 | /* ieee80211.c */ | |
707 | int ieee80211_hw_config(struct ieee80211_local *local); | |
708 | int ieee80211_if_config(struct net_device *dev); | |
709 | int ieee80211_if_config_beacon(struct net_device *dev); | |
710 | struct ieee80211_key_conf * | |
711 | ieee80211_key_data2conf(struct ieee80211_local *local, | |
712 | const struct ieee80211_key *data); | |
713 | struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, | |
714 | int idx, size_t key_len, gfp_t flags); | |
715 | void ieee80211_key_free(struct ieee80211_key *key); | |
716 | void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, | |
717 | struct ieee80211_rx_status *status, u32 msg_type); | |
718 | void ieee80211_prepare_rates(struct ieee80211_local *local, | |
719 | struct ieee80211_hw_mode *mode); | |
720 | void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); | |
721 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); | |
722 | void ieee80211_if_setup(struct net_device *dev); | |
723 | void ieee80211_if_mgmt_setup(struct net_device *dev); | |
724 | int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, | |
725 | const char *name); | |
726 | struct net_device_stats *ieee80211_dev_stats(struct net_device *dev); | |
727 | ||
728 | /* ieee80211_ioctl.c */ | |
729 | extern const struct iw_handler_def ieee80211_iw_handler_def; | |
730 | ||
731 | void ieee80211_update_default_wep_only(struct ieee80211_local *local); | |
732 | ||
733 | ||
734 | /* Least common multiple of the used rates (in 100 kbps). This is used to | |
735 | * calculate rate_inv values for each rate so that only integers are needed. */ | |
736 | #define CHAN_UTIL_RATE_LCM 95040 | |
737 | /* 1 usec is 1/8 * (95040/10) = 1188 */ | |
738 | #define CHAN_UTIL_PER_USEC 1188 | |
739 | /* Amount of bits to shift the result right to scale the total utilization | |
740 | * to values that will not wrap around 32-bit integers. */ | |
741 | #define CHAN_UTIL_SHIFT 9 | |
742 | /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): | |
743 | * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the | |
744 | * raw value with about 23 should give utilization in 10th of a percentage | |
745 | * (1/1000). However, utilization is only estimated and not all intervals | |
746 | * between frames etc. are calculated. 18 seems to give numbers that are closer | |
747 | * to the real maximum. */ | |
748 | #define CHAN_UTIL_PER_10MS 18 | |
749 | #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) | |
750 | #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) | |
751 | ||
752 | ||
753 | /* ieee80211_ioctl.c */ | |
754 | int ieee80211_set_compression(struct ieee80211_local *local, | |
755 | struct net_device *dev, struct sta_info *sta); | |
756 | int ieee80211_init_client(struct net_device *dev); | |
757 | int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); | |
758 | /* ieee80211_sta.c */ | |
759 | void ieee80211_sta_timer(unsigned long data); | |
760 | void ieee80211_sta_work(struct work_struct *work); | |
761 | void ieee80211_sta_scan_work(struct work_struct *work); | |
762 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
763 | struct ieee80211_rx_status *rx_status); | |
764 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); | |
765 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); | |
766 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); | |
767 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); | |
768 | void ieee80211_sta_req_auth(struct net_device *dev, | |
769 | struct ieee80211_if_sta *ifsta); | |
770 | int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); | |
771 | void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, | |
772 | struct ieee80211_rx_status *rx_status); | |
773 | void ieee80211_rx_bss_list_init(struct net_device *dev); | |
774 | void ieee80211_rx_bss_list_deinit(struct net_device *dev); | |
775 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); | |
776 | struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, | |
777 | struct sk_buff *skb, u8 *bssid, | |
778 | u8 *addr); | |
779 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); | |
780 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); | |
781 | ||
782 | /* ieee80211_iface.c */ | |
783 | int ieee80211_if_add(struct net_device *dev, const char *name, | |
784 | struct net_device **new_dev, int type); | |
785 | void ieee80211_if_set_type(struct net_device *dev, int type); | |
786 | void ieee80211_if_reinit(struct net_device *dev); | |
787 | void __ieee80211_if_del(struct ieee80211_local *local, | |
788 | struct ieee80211_sub_if_data *sdata); | |
789 | int ieee80211_if_remove(struct net_device *dev, const char *name, int id); | |
790 | void ieee80211_if_free(struct net_device *dev); | |
791 | void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); | |
792 | int ieee80211_if_add_mgmt(struct ieee80211_local *local); | |
793 | void ieee80211_if_del_mgmt(struct ieee80211_local *local); | |
794 | ||
795 | /* for wiphy privid */ | |
796 | extern void *mac80211_wiphy_privid; | |
797 | ||
798 | #endif /* IEEE80211_I_H */ |