tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
4 *
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
7 *
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 * <j@w1.fi>
10 * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
11 *
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004-2005, Intel Corporation
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation. See README and COPYING for
19 * more details.
20 *
21 * API Version History
22 * 1.0.x -- Initial version
23 * 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
24 * various structure changes, and crypto API init method
25 */
26#ifndef IEEE80211_H
27#define IEEE80211_H
28#include <linux/if_ether.h> /* ETH_ALEN */
29#include <linux/kernel.h> /* ARRAY_SIZE */
30#include <linux/wireless.h>
31
32#define IEEE80211_VERSION "git-1.1.13"
33
34#define IEEE80211_DATA_LEN 2304
35/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
36 6.2.1.1.2.
37
38 The figure in section 7.1.2 suggests a body size of up to 2312
39 bytes is allowed, which is a bit confusing, I suspect this
40 represents the 2304 bytes of real data, plus a possible 8 bytes of
41 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
42
43#define IEEE80211_1ADDR_LEN 10
44#define IEEE80211_2ADDR_LEN 16
45#define IEEE80211_3ADDR_LEN 24
46#define IEEE80211_4ADDR_LEN 30
47#define IEEE80211_FCS_LEN 4
48#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
49#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
50
51#define MIN_FRAG_THRESHOLD 256U
52#define MAX_FRAG_THRESHOLD 2346U
53
54/* Frame control field constants */
55#define IEEE80211_FCTL_VERS 0x0003
56#define IEEE80211_FCTL_FTYPE 0x000c
57#define IEEE80211_FCTL_STYPE 0x00f0
58#define IEEE80211_FCTL_TODS 0x0100
59#define IEEE80211_FCTL_FROMDS 0x0200
60#define IEEE80211_FCTL_MOREFRAGS 0x0400
61#define IEEE80211_FCTL_RETRY 0x0800
62#define IEEE80211_FCTL_PM 0x1000
63#define IEEE80211_FCTL_MOREDATA 0x2000
64#define IEEE80211_FCTL_PROTECTED 0x4000
65#define IEEE80211_FCTL_ORDER 0x8000
66
67#define IEEE80211_FTYPE_MGMT 0x0000
68#define IEEE80211_FTYPE_CTL 0x0004
69#define IEEE80211_FTYPE_DATA 0x0008
70
71/* management */
72#define IEEE80211_STYPE_ASSOC_REQ 0x0000
73#define IEEE80211_STYPE_ASSOC_RESP 0x0010
74#define IEEE80211_STYPE_REASSOC_REQ 0x0020
75#define IEEE80211_STYPE_REASSOC_RESP 0x0030
76#define IEEE80211_STYPE_PROBE_REQ 0x0040
77#define IEEE80211_STYPE_PROBE_RESP 0x0050
78#define IEEE80211_STYPE_BEACON 0x0080
79#define IEEE80211_STYPE_ATIM 0x0090
80#define IEEE80211_STYPE_DISASSOC 0x00A0
81#define IEEE80211_STYPE_AUTH 0x00B0
82#define IEEE80211_STYPE_DEAUTH 0x00C0
83#define IEEE80211_STYPE_ACTION 0x00D0
84
85/* control */
86#define IEEE80211_STYPE_PSPOLL 0x00A0
87#define IEEE80211_STYPE_RTS 0x00B0
88#define IEEE80211_STYPE_CTS 0x00C0
89#define IEEE80211_STYPE_ACK 0x00D0
90#define IEEE80211_STYPE_CFEND 0x00E0
91#define IEEE80211_STYPE_CFENDACK 0x00F0
92
93/* data */
94#define IEEE80211_STYPE_DATA 0x0000
95#define IEEE80211_STYPE_DATA_CFACK 0x0010
96#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
97#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
98#define IEEE80211_STYPE_NULLFUNC 0x0040
99#define IEEE80211_STYPE_CFACK 0x0050
100#define IEEE80211_STYPE_CFPOLL 0x0060
101#define IEEE80211_STYPE_CFACKPOLL 0x0070
102#define IEEE80211_STYPE_QOS_DATA 0x0080
103
104#define IEEE80211_SCTL_FRAG 0x000F
105#define IEEE80211_SCTL_SEQ 0xFFF0
106
107/* QOS control */
108#define IEEE80211_QCTL_TID 0x000F
109
110/* debug macros */
111
112#ifdef CONFIG_IEEE80211_DEBUG
113extern u32 ieee80211_debug_level;
114#define IEEE80211_DEBUG(level, fmt, args...) \
115do { if (ieee80211_debug_level & (level)) \
116 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
117 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
118static inline bool ieee80211_ratelimit_debug(u32 level)
119{
120 return (ieee80211_debug_level & level) && net_ratelimit();
121}
122#else
123#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
124static inline bool ieee80211_ratelimit_debug(u32 level)
125{
126 return false;
127}
128#endif /* CONFIG_IEEE80211_DEBUG */
129
130/* escape_essid() is intended to be used in debug (and possibly error)
131 * messages. It should never be used for passing essid to user space. */
132const char *escape_essid(const char *essid, u8 essid_len);
133
134/*
135 * To use the debug system:
136 *
137 * If you are defining a new debug classification, simply add it to the #define
138 * list here in the form of:
139 *
140 * #define IEEE80211_DL_xxxx VALUE
141 *
142 * shifting value to the left one bit from the previous entry. xxxx should be
143 * the name of the classification (for example, WEP)
144 *
145 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
146 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
147 * to send output to that classification.
148 *
149 * To add your debug level to the list of levels seen when you perform
150 *
151 * % cat /proc/net/ieee80211/debug_level
152 *
153 * you simply need to add your entry to the ieee80211_debug_level array.
154 *
155 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
156 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
157 *
158 */
159
160#define IEEE80211_DL_INFO (1<<0)
161#define IEEE80211_DL_WX (1<<1)
162#define IEEE80211_DL_SCAN (1<<2)
163#define IEEE80211_DL_STATE (1<<3)
164#define IEEE80211_DL_MGMT (1<<4)
165#define IEEE80211_DL_FRAG (1<<5)
166#define IEEE80211_DL_DROP (1<<7)
167
168#define IEEE80211_DL_TX (1<<8)
169#define IEEE80211_DL_RX (1<<9)
170#define IEEE80211_DL_QOS (1<<31)
171
172#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
173#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
174#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
175
176#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
177#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
178#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
179#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
180#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
181#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
182#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
183#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
184#define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
185#include <linux/netdevice.h>
186#include <linux/wireless.h>
187#include <linux/if_arp.h> /* ARPHRD_ETHER */
188
189#ifndef WIRELESS_SPY
190#define WIRELESS_SPY /* enable iwspy support */
191#endif
192#include <net/iw_handler.h> /* new driver API */
193
194#ifndef ETH_P_PAE
195#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
196#endif /* ETH_P_PAE */
197
198#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
199
200#ifndef ETH_P_80211_RAW
201#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
202#endif
203
204/* IEEE 802.11 defines */
205
206#define P80211_OUI_LEN 3
207
208struct ieee80211_snap_hdr {
209
210 u8 dsap; /* always 0xAA */
211 u8 ssap; /* always 0xAA */
212 u8 ctrl; /* always 0x03 */
213 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
214
215} __attribute__ ((packed));
216
217#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
218
219#define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
220#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
221#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
222
223#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
224#define WLAN_GET_SEQ_SEQ(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
225
226/* Authentication algorithms */
227#define WLAN_AUTH_OPEN 0
228#define WLAN_AUTH_SHARED_KEY 1
229#define WLAN_AUTH_LEAP 2
230
231#define WLAN_AUTH_CHALLENGE_LEN 128
232
233#define WLAN_CAPABILITY_ESS (1<<0)
234#define WLAN_CAPABILITY_IBSS (1<<1)
235#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
236#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
237#define WLAN_CAPABILITY_PRIVACY (1<<4)
238#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
239#define WLAN_CAPABILITY_PBCC (1<<6)
240#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
241#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
242#define WLAN_CAPABILITY_QOS (1<<9)
243#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
244#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
245
246/* 802.11g ERP information element */
247#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
248#define WLAN_ERP_USE_PROTECTION (1<<1)
249#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
250
251/* Status codes */
252enum ieee80211_statuscode {
253 WLAN_STATUS_SUCCESS = 0,
254 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
255 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
256 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
257 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
258 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
259 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
260 WLAN_STATUS_CHALLENGE_FAIL = 15,
261 WLAN_STATUS_AUTH_TIMEOUT = 16,
262 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
263 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
264 /* 802.11b */
265 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
266 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
267 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
268 /* 802.11h */
269 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
270 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
271 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
272 /* 802.11g */
273 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
274 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
275 /* 802.11i */
276 WLAN_STATUS_INVALID_IE = 40,
277 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
278 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
279 WLAN_STATUS_INVALID_AKMP = 43,
280 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
281 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
282 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
283};
284
285/* Reason codes */
286enum ieee80211_reasoncode {
287 WLAN_REASON_UNSPECIFIED = 1,
288 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
289 WLAN_REASON_DEAUTH_LEAVING = 3,
290 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
291 WLAN_REASON_DISASSOC_AP_BUSY = 5,
292 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
293 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
294 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
295 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
296 /* 802.11h */
297 WLAN_REASON_DISASSOC_BAD_POWER = 10,
298 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
299 /* 802.11i */
300 WLAN_REASON_INVALID_IE = 13,
301 WLAN_REASON_MIC_FAILURE = 14,
302 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
303 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
304 WLAN_REASON_IE_DIFFERENT = 17,
305 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
306 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
307 WLAN_REASON_INVALID_AKMP = 20,
308 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
309 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
310 WLAN_REASON_IEEE8021X_FAILED = 23,
311 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
312};
313
314/* Action categories - 802.11h */
315enum ieee80211_actioncategories {
316 WLAN_ACTION_SPECTRUM_MGMT = 0,
317 /* Reserved 1-127 */
318 /* Error 128-255 */
319};
320
321/* Action details - 802.11h */
322enum ieee80211_actiondetails {
323 WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
324 WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
325 WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
326 WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
327 WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
328 /* 5 - 255 Reserved */
329};
330
331#define IEEE80211_STATMASK_SIGNAL (1<<0)
332#define IEEE80211_STATMASK_RSSI (1<<1)
333#define IEEE80211_STATMASK_NOISE (1<<2)
334#define IEEE80211_STATMASK_RATE (1<<3)
335#define IEEE80211_STATMASK_WEMASK 0x7
336
337#define IEEE80211_CCK_MODULATION (1<<0)
338#define IEEE80211_OFDM_MODULATION (1<<1)
339
340#define IEEE80211_24GHZ_BAND (1<<0)
341#define IEEE80211_52GHZ_BAND (1<<1)
342
343#define IEEE80211_CCK_RATE_1MB 0x02
344#define IEEE80211_CCK_RATE_2MB 0x04
345#define IEEE80211_CCK_RATE_5MB 0x0B
346#define IEEE80211_CCK_RATE_11MB 0x16
347#define IEEE80211_OFDM_RATE_6MB 0x0C
348#define IEEE80211_OFDM_RATE_9MB 0x12
349#define IEEE80211_OFDM_RATE_12MB 0x18
350#define IEEE80211_OFDM_RATE_18MB 0x24
351#define IEEE80211_OFDM_RATE_24MB 0x30
352#define IEEE80211_OFDM_RATE_36MB 0x48
353#define IEEE80211_OFDM_RATE_48MB 0x60
354#define IEEE80211_OFDM_RATE_54MB 0x6C
355#define IEEE80211_BASIC_RATE_MASK 0x80
356
357#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
358#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
359#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
360#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
361#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
362#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
363#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
364#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
365#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
366#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
367#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
368#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
369
370#define IEEE80211_CCK_RATES_MASK 0x0000000F
371#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
372 IEEE80211_CCK_RATE_2MB_MASK)
373#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
374 IEEE80211_CCK_RATE_5MB_MASK | \
375 IEEE80211_CCK_RATE_11MB_MASK)
376
377#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
378#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
379 IEEE80211_OFDM_RATE_12MB_MASK | \
380 IEEE80211_OFDM_RATE_24MB_MASK)
381#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
382 IEEE80211_OFDM_RATE_9MB_MASK | \
383 IEEE80211_OFDM_RATE_18MB_MASK | \
384 IEEE80211_OFDM_RATE_36MB_MASK | \
385 IEEE80211_OFDM_RATE_48MB_MASK | \
386 IEEE80211_OFDM_RATE_54MB_MASK)
387#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
388 IEEE80211_CCK_DEFAULT_RATES_MASK)
389
390#define IEEE80211_NUM_OFDM_RATES 8
391#define IEEE80211_NUM_CCK_RATES 4
392#define IEEE80211_OFDM_SHIFT_MASK_A 4
393
394/* NOTE: This data is for statistical purposes; not all hardware provides this
395 * information for frames received.
396 * For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
397 */
398struct ieee80211_rx_stats {
399 u32 mac_time;
400 s8 rssi;
401 u8 signal;
402 u8 noise;
403 u16 rate; /* in 100 kbps */
404 u8 received_channel;
405 u8 control;
406 u8 mask;
407 u8 freq;
408 u16 len;
409 u64 tsf;
410 u32 beacon_time;
411};
412
413/* IEEE 802.11 requires that STA supports concurrent reception of at least
414 * three fragmented frames. This define can be increased to support more
415 * concurrent frames, but it should be noted that each entry can consume about
416 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
417#define IEEE80211_FRAG_CACHE_LEN 4
418
419struct ieee80211_frag_entry {
420 unsigned long first_frag_time;
421 unsigned int seq;
422 unsigned int last_frag;
423 struct sk_buff *skb;
424 u8 src_addr[ETH_ALEN];
425 u8 dst_addr[ETH_ALEN];
426};
427
428struct ieee80211_stats {
429 unsigned int tx_unicast_frames;
430 unsigned int tx_multicast_frames;
431 unsigned int tx_fragments;
432 unsigned int tx_unicast_octets;
433 unsigned int tx_multicast_octets;
434 unsigned int tx_deferred_transmissions;
435 unsigned int tx_single_retry_frames;
436 unsigned int tx_multiple_retry_frames;
437 unsigned int tx_retry_limit_exceeded;
438 unsigned int tx_discards;
439 unsigned int rx_unicast_frames;
440 unsigned int rx_multicast_frames;
441 unsigned int rx_fragments;
442 unsigned int rx_unicast_octets;
443 unsigned int rx_multicast_octets;
444 unsigned int rx_fcs_errors;
445 unsigned int rx_discards_no_buffer;
446 unsigned int tx_discards_wrong_sa;
447 unsigned int rx_discards_undecryptable;
448 unsigned int rx_message_in_msg_fragments;
449 unsigned int rx_message_in_bad_msg_fragments;
450};
451
452struct ieee80211_device;
453
454#include "ieee80211_crypt.h"
455
456#define SEC_KEY_1 (1<<0)
457#define SEC_KEY_2 (1<<1)
458#define SEC_KEY_3 (1<<2)
459#define SEC_KEY_4 (1<<3)
460#define SEC_ACTIVE_KEY (1<<4)
461#define SEC_AUTH_MODE (1<<5)
462#define SEC_UNICAST_GROUP (1<<6)
463#define SEC_LEVEL (1<<7)
464#define SEC_ENABLED (1<<8)
465#define SEC_ENCRYPT (1<<9)
466
467#define SEC_LEVEL_0 0 /* None */
468#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
469#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
470#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
471#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
472
473#define SEC_ALG_NONE 0
474#define SEC_ALG_WEP 1
475#define SEC_ALG_TKIP 2
476#define SEC_ALG_CCMP 3
477
478#define WEP_KEYS 4
479#define WEP_KEY_LEN 13
480#define SCM_KEY_LEN 32
481#define SCM_TEMPORAL_KEY_LENGTH 16
482
483struct ieee80211_security {
484 u16 active_key:2,
485 enabled:1,
486 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
487 u8 encode_alg[WEP_KEYS];
488 u8 key_sizes[WEP_KEYS];
489 u8 keys[WEP_KEYS][SCM_KEY_LEN];
490 u8 level;
491 u16 flags;
492} __attribute__ ((packed));
493
494/*
495
496 802.11 data frame from AP
497
498 ,-------------------------------------------------------------------.
499Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
500 |------|------|---------|---------|---------|------|---------|------|
501Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
502 | | tion | (BSSID) | | | ence | data | |
503 `-------------------------------------------------------------------'
504
505Total: 28-2340 bytes
506
507*/
508
509#define BEACON_PROBE_SSID_ID_POSITION 12
510
511/* Management Frame Information Element Types */
512enum ieee80211_mfie {
513 MFIE_TYPE_SSID = 0,
514 MFIE_TYPE_RATES = 1,
515 MFIE_TYPE_FH_SET = 2,
516 MFIE_TYPE_DS_SET = 3,
517 MFIE_TYPE_CF_SET = 4,
518 MFIE_TYPE_TIM = 5,
519 MFIE_TYPE_IBSS_SET = 6,
520 MFIE_TYPE_COUNTRY = 7,
521 MFIE_TYPE_HOP_PARAMS = 8,
522 MFIE_TYPE_HOP_TABLE = 9,
523 MFIE_TYPE_REQUEST = 10,
524 MFIE_TYPE_CHALLENGE = 16,
525 MFIE_TYPE_POWER_CONSTRAINT = 32,
526 MFIE_TYPE_POWER_CAPABILITY = 33,
527 MFIE_TYPE_TPC_REQUEST = 34,
528 MFIE_TYPE_TPC_REPORT = 35,
529 MFIE_TYPE_SUPP_CHANNELS = 36,
530 MFIE_TYPE_CSA = 37,
531 MFIE_TYPE_MEASURE_REQUEST = 38,
532 MFIE_TYPE_MEASURE_REPORT = 39,
533 MFIE_TYPE_QUIET = 40,
534 MFIE_TYPE_IBSS_DFS = 41,
535 MFIE_TYPE_ERP_INFO = 42,
536 MFIE_TYPE_RSN = 48,
537 MFIE_TYPE_RATES_EX = 50,
538 MFIE_TYPE_GENERIC = 221,
539 MFIE_TYPE_QOS_PARAMETER = 222,
540};
541
542/* Minimal header; can be used for passing 802.11 frames with sufficient
543 * information to determine what type of underlying data type is actually
544 * stored in the data. */
545struct ieee80211_hdr {
546 __le16 frame_ctl;
547 __le16 duration_id;
548 u8 payload[0];
549} __attribute__ ((packed));
550
551struct ieee80211_hdr_1addr {
552 __le16 frame_ctl;
553 __le16 duration_id;
554 u8 addr1[ETH_ALEN];
555 u8 payload[0];
556} __attribute__ ((packed));
557
558struct ieee80211_hdr_2addr {
559 __le16 frame_ctl;
560 __le16 duration_id;
561 u8 addr1[ETH_ALEN];
562 u8 addr2[ETH_ALEN];
563 u8 payload[0];
564} __attribute__ ((packed));
565
566struct ieee80211_hdr_3addr {
567 __le16 frame_ctl;
568 __le16 duration_id;
569 u8 addr1[ETH_ALEN];
570 u8 addr2[ETH_ALEN];
571 u8 addr3[ETH_ALEN];
572 __le16 seq_ctl;
573 u8 payload[0];
574} __attribute__ ((packed));
575
576struct ieee80211_hdr_4addr {
577 __le16 frame_ctl;
578 __le16 duration_id;
579 u8 addr1[ETH_ALEN];
580 u8 addr2[ETH_ALEN];
581 u8 addr3[ETH_ALEN];
582 __le16 seq_ctl;
583 u8 addr4[ETH_ALEN];
584 u8 payload[0];
585} __attribute__ ((packed));
586
587struct ieee80211_hdr_3addrqos {
588 __le16 frame_ctl;
589 __le16 duration_id;
590 u8 addr1[ETH_ALEN];
591 u8 addr2[ETH_ALEN];
592 u8 addr3[ETH_ALEN];
593 __le16 seq_ctl;
594 u8 payload[0];
595 __le16 qos_ctl;
596} __attribute__ ((packed));
597
598struct ieee80211_hdr_4addrqos {
599 __le16 frame_ctl;
600 __le16 duration_id;
601 u8 addr1[ETH_ALEN];
602 u8 addr2[ETH_ALEN];
603 u8 addr3[ETH_ALEN];
604 __le16 seq_ctl;
605 u8 addr4[ETH_ALEN];
606 u8 payload[0];
607 __le16 qos_ctl;
608} __attribute__ ((packed));
609
610struct ieee80211_info_element {
611 u8 id;
612 u8 len;
613 u8 data[0];
614} __attribute__ ((packed));
615
616/*
617 * These are the data types that can make up management packets
618 *
619 u16 auth_algorithm;
620 u16 auth_sequence;
621 u16 beacon_interval;
622 u16 capability;
623 u8 current_ap[ETH_ALEN];
624 u16 listen_interval;
625 struct {
626 u16 association_id:14, reserved:2;
627 } __attribute__ ((packed));
628 u32 time_stamp[2];
629 u16 reason;
630 u16 status;
631*/
632
633struct ieee80211_auth {
634 struct ieee80211_hdr_3addr header;
635 __le16 algorithm;
636 __le16 transaction;
637 __le16 status;
638 /* challenge */
639 struct ieee80211_info_element info_element[0];
640} __attribute__ ((packed));
641
642struct ieee80211_channel_switch {
643 u8 id;
644 u8 len;
645 u8 mode;
646 u8 channel;
647 u8 count;
648} __attribute__ ((packed));
649
650struct ieee80211_action {
651 struct ieee80211_hdr_3addr header;
652 u8 category;
653 u8 action;
654 union {
655 struct ieee80211_action_exchange {
656 u8 token;
657 struct ieee80211_info_element info_element[0];
658 } exchange;
659 struct ieee80211_channel_switch channel_switch;
660
661 } format;
662} __attribute__ ((packed));
663
664struct ieee80211_disassoc {
665 struct ieee80211_hdr_3addr header;
666 __le16 reason;
667} __attribute__ ((packed));
668
669/* Alias deauth for disassoc */
670#define ieee80211_deauth ieee80211_disassoc
671
672struct ieee80211_probe_request {
673 struct ieee80211_hdr_3addr header;
674 /* SSID, supported rates */
675 struct ieee80211_info_element info_element[0];
676} __attribute__ ((packed));
677
678struct ieee80211_probe_response {
679 struct ieee80211_hdr_3addr header;
680 __le32 time_stamp[2];
681 __le16 beacon_interval;
682 __le16 capability;
683 /* SSID, supported rates, FH params, DS params,
684 * CF params, IBSS params, TIM (if beacon), RSN */
685 struct ieee80211_info_element info_element[0];
686} __attribute__ ((packed));
687
688/* Alias beacon for probe_response */
689#define ieee80211_beacon ieee80211_probe_response
690
691struct ieee80211_assoc_request {
692 struct ieee80211_hdr_3addr header;
693 __le16 capability;
694 __le16 listen_interval;
695 /* SSID, supported rates, RSN */
696 struct ieee80211_info_element info_element[0];
697} __attribute__ ((packed));
698
699struct ieee80211_reassoc_request {
700 struct ieee80211_hdr_3addr header;
701 __le16 capability;
702 __le16 listen_interval;
703 u8 current_ap[ETH_ALEN];
704 struct ieee80211_info_element info_element[0];
705} __attribute__ ((packed));
706
707struct ieee80211_assoc_response {
708 struct ieee80211_hdr_3addr header;
709 __le16 capability;
710 __le16 status;
711 __le16 aid;
712 /* supported rates */
713 struct ieee80211_info_element info_element[0];
714} __attribute__ ((packed));
715
716struct ieee80211_txb {
717 u8 nr_frags;
718 u8 encrypted;
719 u8 rts_included;
720 u8 reserved;
721 u16 frag_size;
722 u16 payload_size;
723 struct sk_buff *fragments[0];
724};
725
726/* SWEEP TABLE ENTRIES NUMBER */
727#define MAX_SWEEP_TAB_ENTRIES 42
728#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
729/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
730 * only use 8, and then use extended rates for the remaining supported
731 * rates. Other APs, however, stick all of their supported rates on the
732 * main rates information element... */
733#define MAX_RATES_LENGTH ((u8)12)
734#define MAX_RATES_EX_LENGTH ((u8)16)
735#define MAX_NETWORK_COUNT 128
736
737#define CRC_LENGTH 4U
738
739#define MAX_WPA_IE_LEN 64
740
741#define NETWORK_EMPTY_ESSID (1<<0)
742#define NETWORK_HAS_OFDM (1<<1)
743#define NETWORK_HAS_CCK (1<<2)
744
745/* QoS structure */
746#define NETWORK_HAS_QOS_PARAMETERS (1<<3)
747#define NETWORK_HAS_QOS_INFORMATION (1<<4)
748#define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
749 NETWORK_HAS_QOS_INFORMATION)
750
751/* 802.11h */
752#define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
753#define NETWORK_HAS_CSA (1<<6)
754#define NETWORK_HAS_QUIET (1<<7)
755#define NETWORK_HAS_IBSS_DFS (1<<8)
756#define NETWORK_HAS_TPC_REPORT (1<<9)
757
758#define NETWORK_HAS_ERP_VALUE (1<<10)
759
760#define QOS_QUEUE_NUM 4
761#define QOS_OUI_LEN 3
762#define QOS_OUI_TYPE 2
763#define QOS_ELEMENT_ID 221
764#define QOS_OUI_INFO_SUB_TYPE 0
765#define QOS_OUI_PARAM_SUB_TYPE 1
766#define QOS_VERSION_1 1
767#define QOS_AIFSN_MIN_VALUE 2
768
769struct ieee80211_qos_information_element {
770 u8 elementID;
771 u8 length;
772 u8 qui[QOS_OUI_LEN];
773 u8 qui_type;
774 u8 qui_subtype;
775 u8 version;
776 u8 ac_info;
777} __attribute__ ((packed));
778
779struct ieee80211_qos_ac_parameter {
780 u8 aci_aifsn;
781 u8 ecw_min_max;
782 __le16 tx_op_limit;
783} __attribute__ ((packed));
784
785struct ieee80211_qos_parameter_info {
786 struct ieee80211_qos_information_element info_element;
787 u8 reserved;
788 struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
789} __attribute__ ((packed));
790
791struct ieee80211_qos_parameters {
792 __le16 cw_min[QOS_QUEUE_NUM];
793 __le16 cw_max[QOS_QUEUE_NUM];
794 u8 aifs[QOS_QUEUE_NUM];
795 u8 flag[QOS_QUEUE_NUM];
796 __le16 tx_op_limit[QOS_QUEUE_NUM];
797} __attribute__ ((packed));
798
799struct ieee80211_qos_data {
800 struct ieee80211_qos_parameters parameters;
801 int active;
802 int supported;
803 u8 param_count;
804 u8 old_param_count;
805};
806
807struct ieee80211_tim_parameters {
808 u8 tim_count;
809 u8 tim_period;
810} __attribute__ ((packed));
811
812/*******************************************************/
813
814enum { /* ieee80211_basic_report.map */
815 IEEE80211_BASIC_MAP_BSS = (1 << 0),
816 IEEE80211_BASIC_MAP_OFDM = (1 << 1),
817 IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
818 IEEE80211_BASIC_MAP_RADAR = (1 << 3),
819 IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
820 /* Bits 5-7 are reserved */
821
822};
823struct ieee80211_basic_report {
824 u8 channel;
825 __le64 start_time;
826 __le16 duration;
827 u8 map;
828} __attribute__ ((packed));
829
830enum { /* ieee80211_measurement_request.mode */
831 /* Bit 0 is reserved */
832 IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
833 IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
834 IEEE80211_MEASUREMENT_REPORT = (1 << 3),
835 /* Bits 4-7 are reserved */
836};
837
838enum {
839 IEEE80211_REPORT_BASIC = 0, /* required */
840 IEEE80211_REPORT_CCA = 1, /* optional */
841 IEEE80211_REPORT_RPI = 2, /* optional */
842 /* 3-255 reserved */
843};
844
845struct ieee80211_measurement_params {
846 u8 channel;
847 __le64 start_time;
848 __le16 duration;
849} __attribute__ ((packed));
850
851struct ieee80211_measurement_request {
852 struct ieee80211_info_element ie;
853 u8 token;
854 u8 mode;
855 u8 type;
856 struct ieee80211_measurement_params params[0];
857} __attribute__ ((packed));
858
859struct ieee80211_measurement_report {
860 struct ieee80211_info_element ie;
861 u8 token;
862 u8 mode;
863 u8 type;
864 union {
865 struct ieee80211_basic_report basic[0];
866 } u;
867} __attribute__ ((packed));
868
869struct ieee80211_tpc_report {
870 u8 transmit_power;
871 u8 link_margin;
872} __attribute__ ((packed));
873
874struct ieee80211_channel_map {
875 u8 channel;
876 u8 map;
877} __attribute__ ((packed));
878
879struct ieee80211_ibss_dfs {
880 struct ieee80211_info_element ie;
881 u8 owner[ETH_ALEN];
882 u8 recovery_interval;
883 struct ieee80211_channel_map channel_map[0];
884};
885
886struct ieee80211_csa {
887 u8 mode;
888 u8 channel;
889 u8 count;
890} __attribute__ ((packed));
891
892struct ieee80211_quiet {
893 u8 count;
894 u8 period;
895 u8 duration;
896 u8 offset;
897} __attribute__ ((packed));
898
899struct ieee80211_network {
900 /* These entries are used to identify a unique network */
901 u8 bssid[ETH_ALEN];
902 u8 channel;
903 /* Ensure null-terminated for any debug msgs */
904 u8 ssid[IW_ESSID_MAX_SIZE + 1];
905 u8 ssid_len;
906
907 struct ieee80211_qos_data qos_data;
908
909 /* These are network statistics */
910 struct ieee80211_rx_stats stats;
911 u16 capability;
912 u8 rates[MAX_RATES_LENGTH];
913 u8 rates_len;
914 u8 rates_ex[MAX_RATES_EX_LENGTH];
915 u8 rates_ex_len;
916 unsigned long last_scanned;
917 u8 mode;
918 u32 flags;
919 u32 last_associate;
920 u32 time_stamp[2];
921 u16 beacon_interval;
922 u16 listen_interval;
923 u16 atim_window;
924 u8 erp_value;
925 u8 wpa_ie[MAX_WPA_IE_LEN];
926 size_t wpa_ie_len;
927 u8 rsn_ie[MAX_WPA_IE_LEN];
928 size_t rsn_ie_len;
929 struct ieee80211_tim_parameters tim;
930
931 /* 802.11h info */
932
933 /* Power Constraint - mandatory if spctrm mgmt required */
934 u8 power_constraint;
935
936 /* TPC Report - mandatory if spctrm mgmt required */
937 struct ieee80211_tpc_report tpc_report;
938
939 /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
940 * NOTE: This is variable length and so must be allocated dynamically */
941 struct ieee80211_ibss_dfs *ibss_dfs;
942
943 /* Channel Switch Announcement - optional if spctrm mgmt required */
944 struct ieee80211_csa csa;
945
946 /* Quiet - optional if spctrm mgmt required */
947 struct ieee80211_quiet quiet;
948
949 struct list_head list;
950};
951
952enum ieee80211_state {
953 IEEE80211_UNINITIALIZED = 0,
954 IEEE80211_INITIALIZED,
955 IEEE80211_ASSOCIATING,
956 IEEE80211_ASSOCIATED,
957 IEEE80211_AUTHENTICATING,
958 IEEE80211_AUTHENTICATED,
959 IEEE80211_SHUTDOWN
960};
961
962#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
963#define DEFAULT_FTS 2346
964
965#define CFG_IEEE80211_RESERVE_FCS (1<<0)
966#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
967#define CFG_IEEE80211_RTS (1<<2)
968
969#define IEEE80211_24GHZ_MIN_CHANNEL 1
970#define IEEE80211_24GHZ_MAX_CHANNEL 14
971#define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
972 IEEE80211_24GHZ_MIN_CHANNEL + 1)
973
974#define IEEE80211_52GHZ_MIN_CHANNEL 34
975#define IEEE80211_52GHZ_MAX_CHANNEL 165
976#define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
977 IEEE80211_52GHZ_MIN_CHANNEL + 1)
978
979enum {
980 IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
981 IEEE80211_CH_80211H_RULES = (1 << 1),
982 IEEE80211_CH_B_ONLY = (1 << 2),
983 IEEE80211_CH_NO_IBSS = (1 << 3),
984 IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
985 IEEE80211_CH_RADAR_DETECT = (1 << 5),
986 IEEE80211_CH_INVALID = (1 << 6),
987};
988
989struct ieee80211_channel {
990 u32 freq; /* in MHz */
991 u8 channel;
992 u8 flags;
993 u8 max_power; /* in dBm */
994};
995
996struct ieee80211_geo {
997 u8 name[4];
998 u8 bg_channels;
999 u8 a_channels;
1000 struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
1001 struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
1002};
1003
1004struct ieee80211_device {
1005 struct net_device *dev;
1006 struct ieee80211_security sec;
1007
1008 /* Bookkeeping structures */
1009 struct net_device_stats stats;
1010 struct ieee80211_stats ieee_stats;
1011
1012 struct ieee80211_geo geo;
1013
1014 /* Probe / Beacon management */
1015 struct list_head network_free_list;
1016 struct list_head network_list;
1017 struct ieee80211_network *networks;
1018 int scans;
1019 int scan_age;
1020
1021 int iw_mode; /* operating mode (IW_MODE_*) */
1022 struct iw_spy_data spy_data; /* iwspy support */
1023
1024 spinlock_t lock;
1025
1026 int tx_headroom; /* Set to size of any additional room needed at front
1027 * of allocated Tx SKBs */
1028 u32 config;
1029
1030 /* WEP and other encryption related settings at the device level */
1031 int open_wep; /* Set to 1 to allow unencrypted frames */
1032
1033 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1034 * WEP key changes */
1035
1036 /* If the host performs {en,de}cryption, then set to 1 */
1037 int host_encrypt;
1038 int host_encrypt_msdu;
1039 int host_decrypt;
1040 /* host performs multicast decryption */
1041 int host_mc_decrypt;
1042
1043 /* host should strip IV and ICV from protected frames */
1044 /* meaningful only when hardware decryption is being used */
1045 int host_strip_iv_icv;
1046
1047 int host_open_frag;
1048 int host_build_iv;
1049 int ieee802_1x; /* is IEEE 802.1X used */
1050
1051 /* WPA data */
1052 int wpa_enabled;
1053 int drop_unencrypted;
1054 int privacy_invoked;
1055 size_t wpa_ie_len;
1056 u8 *wpa_ie;
1057
1058 struct list_head crypt_deinit_list;
1059 struct ieee80211_crypt_data *crypt[WEP_KEYS];
1060 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
1061 struct timer_list crypt_deinit_timer;
1062 int crypt_quiesced;
1063
1064 int bcrx_sta_key; /* use individual keys to override default keys even
1065 * with RX of broad/multicast frames */
1066
1067 /* Fragmentation structures */
1068 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1069 unsigned int frag_next_idx;
1070 u16 fts; /* Fragmentation Threshold */
1071 u16 rts; /* RTS threshold */
1072
1073 /* Association info */
1074 u8 bssid[ETH_ALEN];
1075
1076 enum ieee80211_state state;
1077
1078 int mode; /* A, B, G */
1079 int modulation; /* CCK, OFDM */
1080 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
1081 int abg_true; /* ABG flag */
1082
1083 int perfect_rssi;
1084 int worst_rssi;
1085
1086 u16 prev_seq_ctl; /* used to drop duplicate frames */
1087
1088 /* Callback functions */
1089 void (*set_security) (struct net_device * dev,
1090 struct ieee80211_security * sec);
1091 int (*hard_start_xmit) (struct ieee80211_txb * txb,
1092 struct net_device * dev, int pri);
1093 int (*reset_port) (struct net_device * dev);
1094 int (*is_queue_full) (struct net_device * dev, int pri);
1095
1096 int (*handle_management) (struct net_device * dev,
1097 struct ieee80211_network * network, u16 type);
1098 int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1099
1100 /* Typical STA methods */
1101 int (*handle_auth) (struct net_device * dev,
1102 struct ieee80211_auth * auth);
1103 int (*handle_deauth) (struct net_device * dev,
1104 struct ieee80211_deauth * auth);
1105 int (*handle_action) (struct net_device * dev,
1106 struct ieee80211_action * action,
1107 struct ieee80211_rx_stats * stats);
1108 int (*handle_disassoc) (struct net_device * dev,
1109 struct ieee80211_disassoc * assoc);
1110 int (*handle_beacon) (struct net_device * dev,
1111 struct ieee80211_beacon * beacon,
1112 struct ieee80211_network * network);
1113 int (*handle_probe_response) (struct net_device * dev,
1114 struct ieee80211_probe_response * resp,
1115 struct ieee80211_network * network);
1116 int (*handle_probe_request) (struct net_device * dev,
1117 struct ieee80211_probe_request * req,
1118 struct ieee80211_rx_stats * stats);
1119 int (*handle_assoc_response) (struct net_device * dev,
1120 struct ieee80211_assoc_response * resp,
1121 struct ieee80211_network * network);
1122
1123 /* Typical AP methods */
1124 int (*handle_assoc_request) (struct net_device * dev);
1125 int (*handle_reassoc_request) (struct net_device * dev,
1126 struct ieee80211_reassoc_request * req);
1127
1128 /* This must be the last item so that it points to the data
1129 * allocated beyond this structure by alloc_ieee80211 */
1130 u8 priv[0];
1131};
1132
1133#define IEEE_A (1<<0)
1134#define IEEE_B (1<<1)
1135#define IEEE_G (1<<2)
1136#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
1137
1138static inline void *ieee80211_priv(struct net_device *dev)
1139{
1140 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1141}
1142
1143static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1144{
1145 /* Single white space is for Linksys APs */
1146 if (essid_len == 1 && essid[0] == ' ')
1147 return 1;
1148
1149 /* Otherwise, if the entire essid is 0, we assume it is hidden */
1150 while (essid_len) {
1151 essid_len--;
1152 if (essid[essid_len] != '\0')
1153 return 0;
1154 }
1155
1156 return 1;
1157}
1158
1159static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1160 int mode)
1161{
1162 /*
1163 * It is possible for both access points and our device to support
1164 * combinations of modes, so as long as there is one valid combination
1165 * of ap/device supported modes, then return success
1166 *
1167 */
1168 if ((mode & IEEE_A) &&
1169 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1170 (ieee->freq_band & IEEE80211_52GHZ_BAND))
1171 return 1;
1172
1173 if ((mode & IEEE_G) &&
1174 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1175 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1176 return 1;
1177
1178 if ((mode & IEEE_B) &&
1179 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1180 (ieee->freq_band & IEEE80211_24GHZ_BAND))
1181 return 1;
1182
1183 return 0;
1184}
1185
1186static inline int ieee80211_get_hdrlen(u16 fc)
1187{
1188 int hdrlen = IEEE80211_3ADDR_LEN;
1189 u16 stype = WLAN_FC_GET_STYPE(fc);
1190
1191 switch (WLAN_FC_GET_TYPE(fc)) {
1192 case IEEE80211_FTYPE_DATA:
1193 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1194 hdrlen = IEEE80211_4ADDR_LEN;
1195 if (stype & IEEE80211_STYPE_QOS_DATA)
1196 hdrlen += 2;
1197 break;
1198 case IEEE80211_FTYPE_CTL:
1199 switch (WLAN_FC_GET_STYPE(fc)) {
1200 case IEEE80211_STYPE_CTS:
1201 case IEEE80211_STYPE_ACK:
1202 hdrlen = IEEE80211_1ADDR_LEN;
1203 break;
1204 default:
1205 hdrlen = IEEE80211_2ADDR_LEN;
1206 break;
1207 }
1208 break;
1209 }
1210
1211 return hdrlen;
1212}
1213
1214static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1215{
1216 switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1217 case IEEE80211_1ADDR_LEN:
1218 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1219 case IEEE80211_2ADDR_LEN:
1220 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1221 case IEEE80211_3ADDR_LEN:
1222 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1223 case IEEE80211_4ADDR_LEN:
1224 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1225 }
1226 return NULL;
1227}
1228
1229static inline int ieee80211_is_ofdm_rate(u8 rate)
1230{
1231 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1232 case IEEE80211_OFDM_RATE_6MB:
1233 case IEEE80211_OFDM_RATE_9MB:
1234 case IEEE80211_OFDM_RATE_12MB:
1235 case IEEE80211_OFDM_RATE_18MB:
1236 case IEEE80211_OFDM_RATE_24MB:
1237 case IEEE80211_OFDM_RATE_36MB:
1238 case IEEE80211_OFDM_RATE_48MB:
1239 case IEEE80211_OFDM_RATE_54MB:
1240 return 1;
1241 }
1242 return 0;
1243}
1244
1245static inline int ieee80211_is_cck_rate(u8 rate)
1246{
1247 switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1248 case IEEE80211_CCK_RATE_1MB:
1249 case IEEE80211_CCK_RATE_2MB:
1250 case IEEE80211_CCK_RATE_5MB:
1251 case IEEE80211_CCK_RATE_11MB:
1252 return 1;
1253 }
1254 return 0;
1255}
1256
1257/* ieee80211.c */
1258extern void free_ieee80211(struct net_device *dev);
1259extern struct net_device *alloc_ieee80211(int sizeof_priv);
1260
1261extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1262
1263/* ieee80211_tx.c */
1264extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1265extern void ieee80211_txb_free(struct ieee80211_txb *);
1266extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1267 struct ieee80211_hdr *frame, int hdr_len,
1268 int total_len, int encrypt_mpdu);
1269
1270/* ieee80211_rx.c */
1271extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1272 struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1273extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1274 struct ieee80211_rx_stats *rx_stats);
1275/* make sure to set stats->len */
1276extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1277 struct ieee80211_hdr_4addr *header,
1278 struct ieee80211_rx_stats *stats);
1279extern void ieee80211_network_reset(struct ieee80211_network *network);
1280
1281/* ieee80211_geo.c */
1282extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1283 *ieee);
1284extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1285 const struct ieee80211_geo *geo);
1286
1287extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1288 u8 channel);
1289extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1290 u8 channel);
1291extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1292extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1293 u8 channel);
1294extern const struct ieee80211_channel *ieee80211_get_channel(struct
1295 ieee80211_device
1296 *ieee, u8 channel);
1297extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1298 u8 channel);
1299
1300/* ieee80211_wx.c */
1301extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1302 struct iw_request_info *info,
1303 union iwreq_data *wrqu, char *key);
1304extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1305 struct iw_request_info *info,
1306 union iwreq_data *wrqu, char *key);
1307extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1308 struct iw_request_info *info,
1309 union iwreq_data *wrqu, char *key);
1310extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1311 struct iw_request_info *info,
1312 union iwreq_data *wrqu, char *extra);
1313extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1314 struct iw_request_info *info,
1315 union iwreq_data *wrqu, char *extra);
1316extern int ieee80211_wx_set_auth(struct net_device *dev,
1317 struct iw_request_info *info,
1318 union iwreq_data *wrqu,
1319 char *extra);
1320extern int ieee80211_wx_get_auth(struct net_device *dev,
1321 struct iw_request_info *info,
1322 union iwreq_data *wrqu,
1323 char *extra);
1324
1325static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1326{
1327 ieee->scans++;
1328}
1329
1330static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1331{
1332 return ieee->scans;
1333}
1334
1335#endif /* IEEE80211_H */