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