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f0706e82 JB |
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> | |
571ecf67 | 24 | #include <linux/etherdevice.h> |
f0706e82 JB |
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 | ||
5628221c DD |
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; | |
f0706e82 JB |
109 | }; |
110 | ||
111 | ||
112 | typedef enum { | |
113 | TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED | |
114 | } ieee80211_txrx_result; | |
115 | ||
116 | struct ieee80211_txrx_data { | |
117 | struct sk_buff *skb; | |
118 | struct net_device *dev; | |
119 | struct ieee80211_local *local; | |
120 | struct ieee80211_sub_if_data *sdata; | |
121 | struct sta_info *sta; | |
122 | u16 fc, ethertype; | |
123 | struct ieee80211_key *key; | |
124 | unsigned int fragmented:1; /* whether the MSDU was fragmented */ | |
125 | union { | |
126 | struct { | |
127 | struct ieee80211_tx_control *control; | |
128 | unsigned int unicast:1; | |
129 | unsigned int ps_buffered:1; | |
f0706e82 JB |
130 | unsigned int probe_last_frag:1; |
131 | struct ieee80211_hw_mode *mode; | |
132 | struct ieee80211_rate *rate; | |
133 | /* use this rate (if set) for last fragment; rate can | |
134 | * be set to lower rate for the first fragments, e.g., | |
135 | * when using CTS protection with IEEE 802.11g. */ | |
136 | struct ieee80211_rate *last_frag_rate; | |
137 | int last_frag_hwrate; | |
138 | int mgmt_interface; | |
139 | ||
140 | /* Extra fragments (in addition to the first fragment | |
141 | * in skb) */ | |
142 | int num_extra_frag; | |
143 | struct sk_buff **extra_frag; | |
144 | } tx; | |
145 | struct { | |
146 | struct ieee80211_rx_status *status; | |
147 | int sent_ps_buffered; | |
148 | int queue; | |
149 | int load; | |
150 | unsigned int in_scan:1; | |
151 | /* frame is destined to interface currently processed | |
152 | * (including multicast frames) */ | |
153 | unsigned int ra_match:1; | |
154 | } rx; | |
155 | } u; | |
156 | }; | |
157 | ||
158 | /* Stored in sk_buff->cb */ | |
159 | struct ieee80211_tx_packet_data { | |
160 | int ifindex; | |
161 | unsigned long jiffies; | |
162 | unsigned int req_tx_status:1; | |
163 | unsigned int do_not_encrypt:1; | |
164 | unsigned int requeue:1; | |
165 | unsigned int mgmt_iface:1; | |
166 | unsigned int queue:4; | |
167 | }; | |
168 | ||
169 | struct ieee80211_tx_stored_packet { | |
170 | struct ieee80211_tx_control control; | |
171 | struct sk_buff *skb; | |
172 | int num_extra_frag; | |
173 | struct sk_buff **extra_frag; | |
174 | int last_frag_rateidx; | |
175 | int last_frag_hwrate; | |
176 | struct ieee80211_rate *last_frag_rate; | |
177 | unsigned int last_frag_rate_ctrl_probe:1; | |
178 | }; | |
179 | ||
180 | typedef ieee80211_txrx_result (*ieee80211_tx_handler) | |
181 | (struct ieee80211_txrx_data *tx); | |
182 | ||
183 | typedef ieee80211_txrx_result (*ieee80211_rx_handler) | |
184 | (struct ieee80211_txrx_data *rx); | |
185 | ||
186 | struct ieee80211_if_ap { | |
187 | u8 *beacon_head, *beacon_tail; | |
188 | int beacon_head_len, beacon_tail_len; | |
189 | ||
190 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
191 | size_t ssid_len; | |
192 | u8 *generic_elem; | |
193 | size_t generic_elem_len; | |
194 | ||
195 | /* yes, this looks ugly, but guarantees that we can later use | |
196 | * bitmap_empty :) | |
197 | * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ | |
198 | u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; | |
199 | atomic_t num_sta_ps; /* number of stations in PS mode */ | |
200 | struct sk_buff_head ps_bc_buf; | |
201 | int dtim_period, dtim_count; | |
202 | int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ | |
203 | int max_ratectrl_rateidx; /* max TX rateidx for rate control */ | |
204 | int num_beacons; /* number of TXed beacon frames for this BSS */ | |
205 | }; | |
206 | ||
207 | struct ieee80211_if_wds { | |
208 | u8 remote_addr[ETH_ALEN]; | |
209 | struct sta_info *sta; | |
210 | }; | |
211 | ||
212 | struct ieee80211_if_vlan { | |
213 | u8 id; | |
214 | }; | |
215 | ||
216 | struct ieee80211_if_sta { | |
217 | enum { | |
218 | IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, | |
219 | IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, | |
220 | IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED | |
221 | } state; | |
222 | struct timer_list timer; | |
223 | struct work_struct work; | |
224 | u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; | |
225 | u8 ssid[IEEE80211_MAX_SSID_LEN]; | |
226 | size_t ssid_len; | |
227 | u16 aid; | |
228 | u16 ap_capab, capab; | |
229 | u8 *extra_ie; /* to be added to the end of AssocReq */ | |
230 | size_t extra_ie_len; | |
231 | ||
232 | /* The last AssocReq/Resp IEs */ | |
233 | u8 *assocreq_ies, *assocresp_ies; | |
234 | size_t assocreq_ies_len, assocresp_ies_len; | |
235 | ||
236 | int auth_tries, assoc_tries; | |
237 | ||
238 | unsigned int ssid_set:1; | |
239 | unsigned int bssid_set:1; | |
240 | unsigned int prev_bssid_set:1; | |
241 | unsigned int authenticated:1; | |
242 | unsigned int associated:1; | |
243 | unsigned int probereq_poll:1; | |
f0706e82 JB |
244 | unsigned int create_ibss:1; |
245 | unsigned int mixed_cell:1; | |
246 | unsigned int wmm_enabled:1; | |
247 | unsigned int auto_ssid_sel:1; | |
248 | unsigned int auto_bssid_sel:1; | |
249 | unsigned int auto_channel_sel:1; | |
250 | #define IEEE80211_STA_REQ_SCAN 0 | |
251 | #define IEEE80211_STA_REQ_AUTH 1 | |
252 | #define IEEE80211_STA_REQ_RUN 2 | |
253 | unsigned long request; | |
254 | struct sk_buff_head skb_queue; | |
255 | ||
808718c1 | 256 | int key_management_enabled; |
f0706e82 JB |
257 | unsigned long last_probe; |
258 | ||
259 | #define IEEE80211_AUTH_ALG_OPEN BIT(0) | |
260 | #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) | |
261 | #define IEEE80211_AUTH_ALG_LEAP BIT(2) | |
262 | unsigned int auth_algs; /* bitfield of allowed auth algs */ | |
263 | int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ | |
264 | int auth_transaction; | |
265 | ||
266 | unsigned long ibss_join_req; | |
267 | struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ | |
268 | u32 supp_rates_bits; | |
269 | ||
270 | int wmm_last_param_set; | |
271 | }; | |
272 | ||
273 | ||
274 | struct ieee80211_sub_if_data { | |
275 | struct list_head list; | |
276 | unsigned int type; | |
277 | ||
278 | struct wireless_dev wdev; | |
279 | ||
280 | struct net_device *dev; | |
281 | struct ieee80211_local *local; | |
282 | ||
283 | int mc_count; | |
284 | unsigned int allmulti:1; | |
285 | unsigned int promisc:1; | |
63fc33ce | 286 | unsigned int use_protection:1; /* CTS protect ERP frames */ |
f0706e82 | 287 | |
7e9ed188 DD |
288 | /* use short preamble with IEEE 802.11b: this flag is set when the AP |
289 | * or beacon generator reports that there are no present stations that | |
290 | * cannot support short preambles */ | |
291 | unsigned int short_preamble:1; | |
292 | ||
f0706e82 JB |
293 | struct net_device_stats stats; |
294 | int drop_unencrypted; | |
295 | int eapol; /* 0 = process EAPOL frames as normal data frames, | |
296 | * 1 = send EAPOL frames through wlan#ap to hostapd | |
297 | * (default) */ | |
298 | int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized | |
299 | * port */ | |
300 | ||
301 | u16 sequence; | |
302 | ||
303 | /* Fragment table for host-based reassembly */ | |
304 | struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; | |
305 | unsigned int fragment_next; | |
306 | ||
307 | #define NUM_DEFAULT_KEYS 4 | |
308 | struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; | |
309 | struct ieee80211_key *default_key; | |
310 | ||
311 | struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ | |
312 | ||
313 | union { | |
314 | struct ieee80211_if_ap ap; | |
315 | struct ieee80211_if_wds wds; | |
316 | struct ieee80211_if_vlan vlan; | |
317 | struct ieee80211_if_sta sta; | |
318 | } u; | |
319 | int channel_use; | |
320 | int channel_use_raw; | |
e9f207f0 JB |
321 | |
322 | #ifdef CONFIG_MAC80211_DEBUGFS | |
323 | struct dentry *debugfsdir; | |
324 | union { | |
325 | struct { | |
326 | struct dentry *channel_use; | |
327 | struct dentry *drop_unencrypted; | |
328 | struct dentry *eapol; | |
329 | struct dentry *ieee8021_x; | |
330 | struct dentry *state; | |
331 | struct dentry *bssid; | |
332 | struct dentry *prev_bssid; | |
333 | struct dentry *ssid_len; | |
334 | struct dentry *aid; | |
335 | struct dentry *ap_capab; | |
336 | struct dentry *capab; | |
337 | struct dentry *extra_ie_len; | |
338 | struct dentry *auth_tries; | |
339 | struct dentry *assoc_tries; | |
340 | struct dentry *auth_algs; | |
341 | struct dentry *auth_alg; | |
342 | struct dentry *auth_transaction; | |
343 | struct dentry *flags; | |
344 | } sta; | |
345 | struct { | |
346 | struct dentry *channel_use; | |
347 | struct dentry *drop_unencrypted; | |
348 | struct dentry *eapol; | |
349 | struct dentry *ieee8021_x; | |
350 | struct dentry *num_sta_ps; | |
351 | struct dentry *dtim_period; | |
352 | struct dentry *dtim_count; | |
353 | struct dentry *num_beacons; | |
354 | struct dentry *force_unicast_rateidx; | |
355 | struct dentry *max_ratectrl_rateidx; | |
356 | struct dentry *num_buffered_multicast; | |
357 | struct dentry *beacon_head_len; | |
358 | struct dentry *beacon_tail_len; | |
359 | } ap; | |
360 | struct { | |
361 | struct dentry *channel_use; | |
362 | struct dentry *drop_unencrypted; | |
363 | struct dentry *eapol; | |
364 | struct dentry *ieee8021_x; | |
365 | struct dentry *peer; | |
366 | } wds; | |
367 | struct { | |
368 | struct dentry *channel_use; | |
369 | struct dentry *drop_unencrypted; | |
370 | struct dentry *eapol; | |
371 | struct dentry *ieee8021_x; | |
372 | struct dentry *vlan_id; | |
373 | } vlan; | |
374 | struct { | |
375 | struct dentry *mode; | |
376 | } monitor; | |
377 | struct dentry *default_key; | |
378 | } debugfs; | |
379 | #endif | |
f0706e82 JB |
380 | }; |
381 | ||
382 | #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) | |
383 | ||
384 | enum { | |
385 | IEEE80211_RX_MSG = 1, | |
386 | IEEE80211_TX_STATUS_MSG = 2, | |
387 | }; | |
388 | ||
389 | struct ieee80211_local { | |
390 | /* embed the driver visible part. | |
391 | * don't cast (use the static inlines below), but we keep | |
392 | * it first anyway so they become a no-op */ | |
393 | struct ieee80211_hw hw; | |
394 | ||
395 | const struct ieee80211_ops *ops; | |
396 | ||
397 | /* List of registered struct ieee80211_hw_mode */ | |
398 | struct list_head modes_list; | |
399 | ||
400 | struct net_device *mdev; /* wmaster# - "master" 802.11 device */ | |
401 | struct net_device *apdev; /* wlan#ap - management frames (hostapd) */ | |
402 | int open_count; | |
403 | int monitors; | |
404 | struct iw_statistics wstats; | |
405 | u8 wstats_flags; | |
b306f453 | 406 | int tx_headroom; /* required headroom for hardware/radiotap */ |
f0706e82 JB |
407 | |
408 | enum { | |
409 | IEEE80211_DEV_UNINITIALIZED = 0, | |
410 | IEEE80211_DEV_REGISTERED, | |
411 | IEEE80211_DEV_UNREGISTERED, | |
412 | } reg_state; | |
413 | ||
414 | /* Tasklet and skb queue to process calls from IRQ mode. All frames | |
415 | * added to skb_queue will be processed, but frames in | |
416 | * skb_queue_unreliable may be dropped if the total length of these | |
417 | * queues increases over the limit. */ | |
418 | #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 | |
419 | struct tasklet_struct tasklet; | |
420 | struct sk_buff_head skb_queue; | |
421 | struct sk_buff_head skb_queue_unreliable; | |
422 | ||
423 | /* Station data structures */ | |
be8755e1 | 424 | rwlock_t sta_lock; /* protects STA data structures */ |
f0706e82 JB |
425 | int num_sta; /* number of stations in sta_list */ |
426 | struct list_head sta_list; | |
f0706e82 JB |
427 | struct sta_info *sta_hash[STA_HASH_SIZE]; |
428 | struct timer_list sta_cleanup; | |
429 | ||
430 | unsigned long state[NUM_TX_DATA_QUEUES]; | |
431 | struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; | |
432 | struct tasklet_struct tx_pending_tasklet; | |
433 | ||
434 | int mc_count; /* total count of multicast entries in all interfaces */ | |
435 | int iff_allmultis, iff_promiscs; | |
436 | /* number of interfaces with corresponding IFF_ flags */ | |
437 | ||
438 | struct rate_control_ref *rate_ctrl; | |
439 | ||
440 | int next_mode; /* MODE_IEEE80211* | |
441 | * The mode preference for next channel change. This is | |
442 | * used to select .11g vs. .11b channels (or 4.9 GHz vs. | |
443 | * .11a) when the channel number is not unique. */ | |
444 | ||
445 | /* Supported and basic rate filters for different modes. These are | |
446 | * pointers to -1 terminated lists and rates in 100 kbps units. */ | |
447 | int *supp_rates[NUM_IEEE80211_MODES]; | |
448 | int *basic_rates[NUM_IEEE80211_MODES]; | |
449 | ||
450 | int rts_threshold; | |
f0706e82 JB |
451 | int fragmentation_threshold; |
452 | int short_retry_limit; /* dot11ShortRetryLimit */ | |
453 | int long_retry_limit; /* dot11LongRetryLimit */ | |
f0706e82 JB |
454 | |
455 | struct crypto_blkcipher *wep_tx_tfm; | |
456 | struct crypto_blkcipher *wep_rx_tfm; | |
457 | u32 wep_iv; | |
458 | int key_tx_rx_threshold; /* number of times any key can be used in TX | |
459 | * or RX before generating a rekey | |
460 | * notification; 0 = notification disabled. */ | |
461 | ||
462 | int bridge_packets; /* bridge packets between associated stations and | |
463 | * deliver multicast frames both back to wireless | |
464 | * media and to the local net stack */ | |
465 | ||
466 | ieee80211_rx_handler *rx_pre_handlers; | |
467 | ieee80211_rx_handler *rx_handlers; | |
468 | ieee80211_tx_handler *tx_handlers; | |
469 | ||
470 | rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under | |
471 | * sta_bss_lock or sta_lock. */ | |
472 | struct list_head sub_if_list; | |
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; | |
507 | char tx_led_name[32], rx_led_name[32]; | |
508 | #endif | |
509 | ||
510 | u32 channel_use; | |
511 | u32 channel_use_raw; | |
f0706e82 | 512 | |
e9f207f0 JB |
513 | #ifdef CONFIG_MAC80211_DEBUGFS |
514 | struct work_struct sta_debugfs_add; | |
515 | #endif | |
516 | ||
f0706e82 JB |
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 default_wep_only; /* only default WEP keys are used with this | |
547 | * interface; this is used to decide when hwaccel | |
548 | * can be used with default keys */ | |
549 | int total_ps_buffered; /* total number of all buffered unicast and | |
550 | * multicast packets for power saving stations | |
551 | */ | |
f0706e82 JB |
552 | int wifi_wme_noack_test; |
553 | unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ | |
554 | ||
555 | unsigned int enabled_modes; /* bitfield of allowed modes; | |
556 | * (1 << MODE_*) */ | |
557 | unsigned int hw_modes; /* bitfield of supported hardware modes; | |
558 | * (1 << MODE_*) */ | |
559 | ||
560 | int user_space_mlme; | |
e9f207f0 JB |
561 | |
562 | #ifdef CONFIG_MAC80211_DEBUGFS | |
563 | struct local_debugfsdentries { | |
564 | struct dentry *channel; | |
565 | struct dentry *frequency; | |
e9f207f0 JB |
566 | struct dentry *antenna_sel_tx; |
567 | struct dentry *antenna_sel_rx; | |
568 | struct dentry *bridge_packets; | |
569 | struct dentry *key_tx_rx_threshold; | |
570 | struct dentry *rts_threshold; | |
571 | struct dentry *fragmentation_threshold; | |
572 | struct dentry *short_retry_limit; | |
573 | struct dentry *long_retry_limit; | |
574 | struct dentry *total_ps_buffered; | |
575 | struct dentry *mode; | |
576 | struct dentry *wep_iv; | |
e9f207f0 JB |
577 | struct dentry *modes; |
578 | struct dentry *statistics; | |
579 | struct local_debugfsdentries_statsdentries { | |
580 | struct dentry *transmitted_fragment_count; | |
581 | struct dentry *multicast_transmitted_frame_count; | |
582 | struct dentry *failed_count; | |
583 | struct dentry *retry_count; | |
584 | struct dentry *multiple_retry_count; | |
585 | struct dentry *frame_duplicate_count; | |
586 | struct dentry *received_fragment_count; | |
587 | struct dentry *multicast_received_frame_count; | |
588 | struct dentry *transmitted_frame_count; | |
589 | struct dentry *wep_undecryptable_count; | |
590 | struct dentry *num_scans; | |
591 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS | |
592 | struct dentry *tx_handlers_drop; | |
593 | struct dentry *tx_handlers_queued; | |
594 | struct dentry *tx_handlers_drop_unencrypted; | |
595 | struct dentry *tx_handlers_drop_fragment; | |
596 | struct dentry *tx_handlers_drop_wep; | |
597 | struct dentry *tx_handlers_drop_not_assoc; | |
598 | struct dentry *tx_handlers_drop_unauth_port; | |
599 | struct dentry *rx_handlers_drop; | |
600 | struct dentry *rx_handlers_queued; | |
601 | struct dentry *rx_handlers_drop_nullfunc; | |
602 | struct dentry *rx_handlers_drop_defrag; | |
603 | struct dentry *rx_handlers_drop_short; | |
604 | struct dentry *rx_handlers_drop_passive_scan; | |
605 | struct dentry *tx_expand_skb_head; | |
606 | struct dentry *tx_expand_skb_head_cloned; | |
607 | struct dentry *rx_expand_skb_head; | |
608 | struct dentry *rx_expand_skb_head2; | |
609 | struct dentry *rx_handlers_fragments; | |
610 | struct dentry *tx_status_drop; | |
611 | struct dentry *wme_tx_queue; | |
612 | struct dentry *wme_rx_queue; | |
613 | #endif | |
614 | struct dentry *dot11ACKFailureCount; | |
615 | struct dentry *dot11RTSFailureCount; | |
616 | struct dentry *dot11FCSErrorCount; | |
617 | struct dentry *dot11RTSSuccessCount; | |
618 | } stats; | |
619 | struct dentry *stations; | |
620 | struct dentry *keys; | |
621 | } debugfs; | |
622 | #endif | |
f0706e82 JB |
623 | }; |
624 | ||
625 | static inline struct ieee80211_local *hw_to_local( | |
626 | struct ieee80211_hw *hw) | |
627 | { | |
628 | return container_of(hw, struct ieee80211_local, hw); | |
629 | } | |
630 | ||
631 | static inline struct ieee80211_hw *local_to_hw( | |
632 | struct ieee80211_local *local) | |
633 | { | |
634 | return &local->hw; | |
635 | } | |
636 | ||
637 | enum ieee80211_link_state_t { | |
638 | IEEE80211_LINK_STATE_XOFF = 0, | |
639 | IEEE80211_LINK_STATE_PENDING, | |
640 | }; | |
641 | ||
642 | struct sta_attribute { | |
643 | struct attribute attr; | |
644 | ssize_t (*show)(const struct sta_info *, char *buf); | |
645 | ssize_t (*store)(struct sta_info *, const char *buf, size_t count); | |
646 | }; | |
647 | ||
648 | static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid) | |
649 | { | |
650 | /* | |
651 | * This format has ben mandated by the IEEE specifications, | |
652 | * so this line may not be changed to use the __set_bit() format. | |
653 | */ | |
654 | bss->tim[(aid)/8] |= 1<<((aid) % 8); | |
655 | } | |
656 | ||
657 | static inline void bss_tim_set(struct ieee80211_local *local, | |
658 | struct ieee80211_if_ap *bss, int aid) | |
659 | { | |
be8755e1 | 660 | read_lock_bh(&local->sta_lock); |
f0706e82 | 661 | __bss_tim_set(bss, aid); |
be8755e1 | 662 | read_unlock_bh(&local->sta_lock); |
f0706e82 JB |
663 | } |
664 | ||
665 | static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid) | |
666 | { | |
667 | /* | |
668 | * This format has ben mandated by the IEEE specifications, | |
669 | * so this line may not be changed to use the __clear_bit() format. | |
670 | */ | |
671 | bss->tim[(aid)/8] &= !(1<<((aid) % 8)); | |
672 | } | |
673 | ||
674 | static inline void bss_tim_clear(struct ieee80211_local *local, | |
675 | struct ieee80211_if_ap *bss, int aid) | |
676 | { | |
be8755e1 | 677 | read_lock_bh(&local->sta_lock); |
f0706e82 | 678 | __bss_tim_clear(bss, aid); |
be8755e1 | 679 | read_unlock_bh(&local->sta_lock); |
f0706e82 JB |
680 | } |
681 | ||
682 | /** | |
683 | * ieee80211_is_erp_rate - Check if a rate is an ERP rate | |
684 | * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) | |
685 | * @rate: Transmission rate to check, in 100 kbps | |
686 | * | |
687 | * Check if a given rate is an Extended Rate PHY (ERP) rate. | |
688 | */ | |
689 | static inline int ieee80211_is_erp_rate(int phymode, int rate) | |
690 | { | |
691 | if (phymode == MODE_IEEE80211G) { | |
692 | if (rate != 10 && rate != 20 && | |
693 | rate != 55 && rate != 110) | |
694 | return 1; | |
695 | } | |
696 | return 0; | |
697 | } | |
698 | ||
571ecf67 JB |
699 | static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) |
700 | { | |
701 | return compare_ether_addr(raddr, addr) == 0 || | |
702 | is_broadcast_ether_addr(raddr); | |
703 | } | |
704 | ||
705 | ||
f0706e82 JB |
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); | |
f0706e82 JB |
710 | void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, |
711 | struct ieee80211_rx_status *status, u32 msg_type); | |
712 | void ieee80211_prepare_rates(struct ieee80211_local *local, | |
713 | struct ieee80211_hw_mode *mode); | |
714 | void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); | |
715 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); | |
716 | void ieee80211_if_setup(struct net_device *dev); | |
717 | void ieee80211_if_mgmt_setup(struct net_device *dev); | |
f0706e82 | 718 | struct net_device_stats *ieee80211_dev_stats(struct net_device *dev); |
571ecf67 JB |
719 | struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local, |
720 | int phymode, int hwrate); | |
721 | void ieee80211_key_threshold_notify(struct net_device *dev, | |
722 | struct ieee80211_key *key, | |
723 | struct sta_info *sta); | |
f0706e82 JB |
724 | |
725 | /* ieee80211_ioctl.c */ | |
726 | extern const struct iw_handler_def ieee80211_iw_handler_def; | |
727 | ||
728 | void ieee80211_update_default_wep_only(struct ieee80211_local *local); | |
729 | ||
730 | ||
731 | /* Least common multiple of the used rates (in 100 kbps). This is used to | |
732 | * calculate rate_inv values for each rate so that only integers are needed. */ | |
733 | #define CHAN_UTIL_RATE_LCM 95040 | |
734 | /* 1 usec is 1/8 * (95040/10) = 1188 */ | |
735 | #define CHAN_UTIL_PER_USEC 1188 | |
736 | /* Amount of bits to shift the result right to scale the total utilization | |
737 | * to values that will not wrap around 32-bit integers. */ | |
738 | #define CHAN_UTIL_SHIFT 9 | |
739 | /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): | |
740 | * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the | |
741 | * raw value with about 23 should give utilization in 10th of a percentage | |
742 | * (1/1000). However, utilization is only estimated and not all intervals | |
743 | * between frames etc. are calculated. 18 seems to give numbers that are closer | |
744 | * to the real maximum. */ | |
745 | #define CHAN_UTIL_PER_10MS 18 | |
746 | #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) | |
747 | #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) | |
748 | ||
749 | ||
750 | /* ieee80211_ioctl.c */ | |
751 | int ieee80211_set_compression(struct ieee80211_local *local, | |
752 | struct net_device *dev, struct sta_info *sta); | |
f0706e82 JB |
753 | int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); |
754 | /* ieee80211_sta.c */ | |
755 | void ieee80211_sta_timer(unsigned long data); | |
756 | void ieee80211_sta_work(struct work_struct *work); | |
757 | void ieee80211_sta_scan_work(struct work_struct *work); | |
758 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
759 | struct ieee80211_rx_status *rx_status); | |
760 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); | |
761 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); | |
762 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); | |
763 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); | |
764 | void ieee80211_sta_req_auth(struct net_device *dev, | |
765 | struct ieee80211_if_sta *ifsta); | |
766 | int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); | |
767 | void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, | |
768 | struct ieee80211_rx_status *rx_status); | |
769 | void ieee80211_rx_bss_list_init(struct net_device *dev); | |
770 | void ieee80211_rx_bss_list_deinit(struct net_device *dev); | |
771 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); | |
772 | struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, | |
773 | struct sk_buff *skb, u8 *bssid, | |
774 | u8 *addr); | |
775 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); | |
776 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); | |
d9430a32 DD |
777 | void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes); |
778 | void ieee80211_reset_erp_info(struct net_device *dev); | |
f0706e82 JB |
779 | |
780 | /* ieee80211_iface.c */ | |
781 | int ieee80211_if_add(struct net_device *dev, const char *name, | |
782 | struct net_device **new_dev, int type); | |
783 | void ieee80211_if_set_type(struct net_device *dev, int type); | |
784 | void ieee80211_if_reinit(struct net_device *dev); | |
785 | void __ieee80211_if_del(struct ieee80211_local *local, | |
786 | struct ieee80211_sub_if_data *sdata); | |
787 | int ieee80211_if_remove(struct net_device *dev, const char *name, int id); | |
788 | void ieee80211_if_free(struct net_device *dev); | |
789 | void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); | |
790 | int ieee80211_if_add_mgmt(struct ieee80211_local *local); | |
791 | void ieee80211_if_del_mgmt(struct ieee80211_local *local); | |
792 | ||
fd8bacc9 DD |
793 | /* regdomain.c */ |
794 | void ieee80211_regdomain_init(void); | |
795 | void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); | |
796 | ||
571ecf67 JB |
797 | /* rx handling */ |
798 | extern ieee80211_rx_handler ieee80211_rx_pre_handlers[]; | |
799 | extern ieee80211_rx_handler ieee80211_rx_handlers[]; | |
800 | ||
e2ebc74d JB |
801 | /* tx handling */ |
802 | extern ieee80211_tx_handler ieee80211_tx_handlers[]; | |
803 | void ieee80211_clear_tx_pending(struct ieee80211_local *local); | |
804 | void ieee80211_tx_pending(unsigned long data); | |
805 | int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
806 | int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
807 | int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
808 | int ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
809 | ||
1f5a7e47 JB |
810 | /* key handling */ |
811 | struct ieee80211_key_conf * | |
812 | ieee80211_key_data2conf(struct ieee80211_local *local, | |
813 | const struct ieee80211_key *data); | |
814 | struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, | |
815 | int idx, size_t key_len, gfp_t flags); | |
816 | void ieee80211_key_free(struct ieee80211_key *key); | |
817 | ||
c2d1560a JB |
818 | /* utility functions/constants */ |
819 | extern void *mac80211_wiphy_privid; /* for wiphy privid */ | |
820 | extern const unsigned char rfc1042_header[6]; | |
821 | extern const unsigned char bridge_tunnel_header[6]; | |
822 | u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len); | |
823 | int ieee80211_is_eapol(const struct sk_buff *skb); | |
824 | int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, | |
825 | int rate, int erp, int short_preamble); | |
f0706e82 JB |
826 | |
827 | #endif /* IEEE80211_I_H */ |