2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
10 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004, Intel Corporation
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
23 #include <linux/if_ether.h> /* ETH_ALEN */
24 #include <linux/kernel.h> /* ARRAY_SIZE */
25 #include <linux/wireless.h>
27 #define IEEE80211_DATA_LEN 2304
28 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
31 The figure in section 7.1.2 suggests a body size of up to 2312
32 bytes is allowed, which is a bit confusing, I suspect this
33 represents the 2304 bytes of real data, plus a possible 8 bytes of
34 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
36 #define IEEE80211_HLEN 30
37 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
39 struct ieee80211_hdr {
47 } __attribute__ ((packed));
49 struct ieee80211_hdr_3addr {
56 } __attribute__ ((packed));
58 #define IEEE80211_1ADDR_LEN 10
59 #define IEEE80211_2ADDR_LEN 16
60 #define IEEE80211_3ADDR_LEN 24
61 #define IEEE80211_4ADDR_LEN 30
62 #define IEEE80211_FCS_LEN 4
64 #define MIN_FRAG_THRESHOLD 256U
65 #define MAX_FRAG_THRESHOLD 2346U
67 /* Frame control field constants */
68 #define IEEE80211_FCTL_VERS 0x0003
69 #define IEEE80211_FCTL_FTYPE 0x000c
70 #define IEEE80211_FCTL_STYPE 0x00f0
71 #define IEEE80211_FCTL_TODS 0x0100
72 #define IEEE80211_FCTL_FROMDS 0x0200
73 #define IEEE80211_FCTL_MOREFRAGS 0x0400
74 #define IEEE80211_FCTL_RETRY 0x0800
75 #define IEEE80211_FCTL_PM 0x1000
76 #define IEEE80211_FCTL_MOREDATA 0x2000
77 #define IEEE80211_FCTL_PROTECTED 0x4000
78 #define IEEE80211_FCTL_ORDER 0x8000
80 #define IEEE80211_FTYPE_MGMT 0x0000
81 #define IEEE80211_FTYPE_CTL 0x0004
82 #define IEEE80211_FTYPE_DATA 0x0008
85 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
86 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
87 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
88 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
89 #define IEEE80211_STYPE_PROBE_REQ 0x0040
90 #define IEEE80211_STYPE_PROBE_RESP 0x0050
91 #define IEEE80211_STYPE_BEACON 0x0080
92 #define IEEE80211_STYPE_ATIM 0x0090
93 #define IEEE80211_STYPE_DISASSOC 0x00A0
94 #define IEEE80211_STYPE_AUTH 0x00B0
95 #define IEEE80211_STYPE_DEAUTH 0x00C0
96 #define IEEE80211_STYPE_ACTION 0x00D0
99 #define IEEE80211_STYPE_PSPOLL 0x00A0
100 #define IEEE80211_STYPE_RTS 0x00B0
101 #define IEEE80211_STYPE_CTS 0x00C0
102 #define IEEE80211_STYPE_ACK 0x00D0
103 #define IEEE80211_STYPE_CFEND 0x00E0
104 #define IEEE80211_STYPE_CFENDACK 0x00F0
107 #define IEEE80211_STYPE_DATA 0x0000
108 #define IEEE80211_STYPE_DATA_CFACK 0x0010
109 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
110 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
111 #define IEEE80211_STYPE_NULLFUNC 0x0040
112 #define IEEE80211_STYPE_CFACK 0x0050
113 #define IEEE80211_STYPE_CFPOLL 0x0060
114 #define IEEE80211_STYPE_CFACKPOLL 0x0070
116 #define IEEE80211_SCTL_FRAG 0x000F
117 #define IEEE80211_SCTL_SEQ 0xFFF0
121 #ifdef CONFIG_IEEE80211_DEBUG
122 extern u32 ieee80211_debug_level;
123 #define IEEE80211_DEBUG(level, fmt, args...) \
124 do { if (ieee80211_debug_level & (level)) \
125 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
126 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
128 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
129 #endif /* CONFIG_IEEE80211_DEBUG */
131 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
133 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
134 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
136 /* escape_essid() is intended to be used in debug (and possibly error)
137 * messages. It should never be used for passing essid to user space. */
138 const char *escape_essid(const char *essid, u8 essid_len);
141 * To use the debug system:
143 * If you are defining a new debug classification, simply add it to the #define
144 * list here in the form of:
146 * #define IEEE80211_DL_xxxx VALUE
148 * shifting value to the left one bit from the previous entry. xxxx should be
149 * the name of the classification (for example, WEP)
151 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
152 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
153 * to send output to that classification.
155 * To add your debug level to the list of levels seen when you perform
157 * % cat /proc/net/ieee80211/debug_level
159 * you simply need to add your entry to the ieee80211_debug_level array.
161 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
162 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
166 #define IEEE80211_DL_INFO (1<<0)
167 #define IEEE80211_DL_WX (1<<1)
168 #define IEEE80211_DL_SCAN (1<<2)
169 #define IEEE80211_DL_STATE (1<<3)
170 #define IEEE80211_DL_MGMT (1<<4)
171 #define IEEE80211_DL_FRAG (1<<5)
172 #define IEEE80211_DL_DROP (1<<7)
174 #define IEEE80211_DL_TX (1<<8)
175 #define IEEE80211_DL_RX (1<<9)
177 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
178 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
179 #define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
181 #define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
182 #define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
183 #define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
184 #define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
185 #define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
186 #define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
187 #define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
188 #define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
189 #include <linux/netdevice.h>
190 #include <linux/wireless.h>
191 #include <linux/if_arp.h> /* ARPHRD_ETHER */
194 #define WIRELESS_SPY /* enable iwspy support */
196 #include <net/iw_handler.h> /* new driver API */
199 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
200 #endif /* ETH_P_PAE */
202 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
204 #ifndef ETH_P_80211_RAW
205 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
208 /* IEEE 802.11 defines */
210 #define P80211_OUI_LEN 3
212 struct ieee80211_snap_hdr {
214 u8 dsap; /* always 0xAA */
215 u8 ssap; /* always 0xAA */
216 u8 ctrl; /* always 0x03 */
217 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
219 } __attribute__ ((packed));
221 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
223 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
224 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
225 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
227 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
228 #define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
230 /* Authentication algorithms */
231 #define WLAN_AUTH_OPEN 0
232 #define WLAN_AUTH_SHARED_KEY 1
234 #define WLAN_AUTH_CHALLENGE_LEN 128
236 #define WLAN_CAPABILITY_ESS (1<<0)
237 #define WLAN_CAPABILITY_IBSS (1<<1)
238 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
239 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
240 #define WLAN_CAPABILITY_PRIVACY (1<<4)
241 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
242 #define WLAN_CAPABILITY_PBCC (1<<6)
243 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
244 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
245 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
246 #define WLAN_CAPABILITY_OSSS_OFDM (1<<13)
249 enum ieee80211_statuscode {
250 WLAN_STATUS_SUCCESS = 0,
251 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
252 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
253 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
254 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
255 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
256 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
257 WLAN_STATUS_CHALLENGE_FAIL = 15,
258 WLAN_STATUS_AUTH_TIMEOUT = 16,
259 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
260 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
262 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
263 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
264 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
266 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
267 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
268 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
270 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
271 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
273 WLAN_STATUS_INVALID_IE = 40,
274 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
275 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
276 WLAN_STATUS_INVALID_AKMP = 43,
277 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
278 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
279 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
283 enum ieee80211_reasoncode {
284 WLAN_REASON_UNSPECIFIED = 1,
285 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
286 WLAN_REASON_DEAUTH_LEAVING = 3,
287 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
288 WLAN_REASON_DISASSOC_AP_BUSY = 5,
289 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
290 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
291 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
292 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
294 WLAN_REASON_DISASSOC_BAD_POWER = 10,
295 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
297 WLAN_REASON_INVALID_IE = 13,
298 WLAN_REASON_MIC_FAILURE = 14,
299 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
300 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
301 WLAN_REASON_IE_DIFFERENT = 17,
302 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
303 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
304 WLAN_REASON_INVALID_AKMP = 20,
305 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
306 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
307 WLAN_REASON_IEEE8021X_FAILED = 23,
308 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
311 #define IEEE80211_STATMASK_SIGNAL (1<<0)
312 #define IEEE80211_STATMASK_RSSI (1<<1)
313 #define IEEE80211_STATMASK_NOISE (1<<2)
314 #define IEEE80211_STATMASK_RATE (1<<3)
315 #define IEEE80211_STATMASK_WEMASK 0x7
317 #define IEEE80211_CCK_MODULATION (1<<0)
318 #define IEEE80211_OFDM_MODULATION (1<<1)
320 #define IEEE80211_24GHZ_BAND (1<<0)
321 #define IEEE80211_52GHZ_BAND (1<<1)
323 #define IEEE80211_CCK_RATE_1MB 0x02
324 #define IEEE80211_CCK_RATE_2MB 0x04
325 #define IEEE80211_CCK_RATE_5MB 0x0B
326 #define IEEE80211_CCK_RATE_11MB 0x16
327 #define IEEE80211_OFDM_RATE_6MB 0x0C
328 #define IEEE80211_OFDM_RATE_9MB 0x12
329 #define IEEE80211_OFDM_RATE_12MB 0x18
330 #define IEEE80211_OFDM_RATE_18MB 0x24
331 #define IEEE80211_OFDM_RATE_24MB 0x30
332 #define IEEE80211_OFDM_RATE_36MB 0x48
333 #define IEEE80211_OFDM_RATE_48MB 0x60
334 #define IEEE80211_OFDM_RATE_54MB 0x6C
335 #define IEEE80211_BASIC_RATE_MASK 0x80
337 #define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
338 #define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
339 #define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
340 #define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
341 #define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
342 #define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
343 #define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
344 #define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
345 #define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
346 #define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
347 #define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
348 #define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
350 #define IEEE80211_CCK_RATES_MASK 0x0000000F
351 #define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
352 IEEE80211_CCK_RATE_2MB_MASK)
353 #define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
354 IEEE80211_CCK_RATE_5MB_MASK | \
355 IEEE80211_CCK_RATE_11MB_MASK)
357 #define IEEE80211_OFDM_RATES_MASK 0x00000FF0
358 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
359 IEEE80211_OFDM_RATE_12MB_MASK | \
360 IEEE80211_OFDM_RATE_24MB_MASK)
361 #define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
362 IEEE80211_OFDM_RATE_9MB_MASK | \
363 IEEE80211_OFDM_RATE_18MB_MASK | \
364 IEEE80211_OFDM_RATE_36MB_MASK | \
365 IEEE80211_OFDM_RATE_48MB_MASK | \
366 IEEE80211_OFDM_RATE_54MB_MASK)
367 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
368 IEEE80211_CCK_DEFAULT_RATES_MASK)
370 #define IEEE80211_NUM_OFDM_RATES 8
371 #define IEEE80211_NUM_CCK_RATES 4
372 #define IEEE80211_OFDM_SHIFT_MASK_A 4
374 /* NOTE: This data is for statistical purposes; not all hardware provides this
375 * information for frames received. Not setting these will not cause
376 * any adverse affects. */
377 struct ieee80211_rx_stats {
382 u16 rate; /* in 100 kbps */
390 /* IEEE 802.11 requires that STA supports concurrent reception of at least
391 * three fragmented frames. This define can be increased to support more
392 * concurrent frames, but it should be noted that each entry can consume about
393 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
394 #define IEEE80211_FRAG_CACHE_LEN 4
396 struct ieee80211_frag_entry {
397 unsigned long first_frag_time;
399 unsigned int last_frag;
401 u8 src_addr[ETH_ALEN];
402 u8 dst_addr[ETH_ALEN];
405 struct ieee80211_stats {
406 unsigned int tx_unicast_frames;
407 unsigned int tx_multicast_frames;
408 unsigned int tx_fragments;
409 unsigned int tx_unicast_octets;
410 unsigned int tx_multicast_octets;
411 unsigned int tx_deferred_transmissions;
412 unsigned int tx_single_retry_frames;
413 unsigned int tx_multiple_retry_frames;
414 unsigned int tx_retry_limit_exceeded;
415 unsigned int tx_discards;
416 unsigned int rx_unicast_frames;
417 unsigned int rx_multicast_frames;
418 unsigned int rx_fragments;
419 unsigned int rx_unicast_octets;
420 unsigned int rx_multicast_octets;
421 unsigned int rx_fcs_errors;
422 unsigned int rx_discards_no_buffer;
423 unsigned int tx_discards_wrong_sa;
424 unsigned int rx_discards_undecryptable;
425 unsigned int rx_message_in_msg_fragments;
426 unsigned int rx_message_in_bad_msg_fragments;
429 struct ieee80211_device;
431 #include "ieee80211_crypt.h"
433 #define SEC_KEY_1 (1<<0)
434 #define SEC_KEY_2 (1<<1)
435 #define SEC_KEY_3 (1<<2)
436 #define SEC_KEY_4 (1<<3)
437 #define SEC_ACTIVE_KEY (1<<4)
438 #define SEC_AUTH_MODE (1<<5)
439 #define SEC_UNICAST_GROUP (1<<6)
440 #define SEC_LEVEL (1<<7)
441 #define SEC_ENABLED (1<<8)
442 #define SEC_ENCRYPT (1<<9)
444 #define SEC_LEVEL_0 0 /* None */
445 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
446 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
447 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
448 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
450 #define SEC_ALG_NONE 0
451 #define SEC_ALG_WEP 1
452 #define SEC_ALG_TKIP 2
453 #define SEC_ALG_CCMP 3
456 #define WEP_KEY_LEN 13
457 #define SCM_KEY_LEN 32
458 #define SCM_TEMPORAL_KEY_LENGTH 16
460 struct ieee80211_security {
463 auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
464 u8 encode_alg[WEP_KEYS];
465 u8 key_sizes[WEP_KEYS];
466 u8 keys[WEP_KEYS][SCM_KEY_LEN];
469 } __attribute__ ((packed));
473 802.11 data frame from AP
475 ,-------------------------------------------------------------------.
476 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
477 |------|------|---------|---------|---------|------|---------|------|
478 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
479 | | tion | (BSSID) | | | ence | data | |
480 `-------------------------------------------------------------------'
486 #define BEACON_PROBE_SSID_ID_POSITION 12
488 /* Management Frame Information Element Types */
489 enum ieee80211_mfie {
492 MFIE_TYPE_FH_SET = 2,
493 MFIE_TYPE_DS_SET = 3,
494 MFIE_TYPE_CF_SET = 4,
496 MFIE_TYPE_IBSS_SET = 6,
497 MFIE_TYPE_COUNTRY = 7,
498 MFIE_TYPE_HOP_PARAMS = 8,
499 MFIE_TYPE_HOP_TABLE = 9,
500 MFIE_TYPE_REQUEST = 10,
501 MFIE_TYPE_CHALLENGE = 16,
502 MFIE_TYPE_POWER_CONSTRAINT = 32,
503 MFIE_TYPE_POWER_CAPABILITY = 33,
504 MFIE_TYPE_TPC_REQUEST = 34,
505 MFIE_TYPE_TPC_REPORT = 35,
506 MFIE_TYPE_SUPP_CHANNELS = 36,
508 MFIE_TYPE_MEASURE_REQUEST = 38,
509 MFIE_TYPE_MEASURE_REPORT = 39,
510 MFIE_TYPE_QUIET = 40,
511 MFIE_TYPE_IBSS_DFS = 41,
512 MFIE_TYPE_ERP_INFO = 42,
514 MFIE_TYPE_RATES_EX = 50,
515 MFIE_TYPE_GENERIC = 221,
518 struct ieee80211_info_element {
522 } __attribute__ ((packed));
525 * These are the data types that can make up management packets
531 u8 current_ap[ETH_ALEN];
534 u16 association_id:14, reserved:2;
535 } __attribute__ ((packed));
541 struct ieee80211_authentication {
542 struct ieee80211_hdr_3addr header;
546 struct ieee80211_info_element info_element[0];
547 } __attribute__ ((packed));
549 struct ieee80211_probe_response {
550 struct ieee80211_hdr_3addr header;
552 __le16 beacon_interval;
554 struct ieee80211_info_element info_element[0];
555 } __attribute__ ((packed));
557 struct ieee80211_assoc_request_frame {
559 __le16 listen_interval;
560 u8 current_ap[ETH_ALEN];
561 struct ieee80211_info_element info_element[0];
562 } __attribute__ ((packed));
564 struct ieee80211_assoc_response_frame {
565 struct ieee80211_hdr_3addr header;
569 struct ieee80211_info_element info_element[0]; /* supported rates */
570 } __attribute__ ((packed));
572 struct ieee80211_txb {
578 struct sk_buff *fragments[0];
581 /* SWEEP TABLE ENTRIES NUMBER */
582 #define MAX_SWEEP_TAB_ENTRIES 42
583 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
584 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
585 * only use 8, and then use extended rates for the remaining supported
586 * rates. Other APs, however, stick all of their supported rates on the
587 * main rates information element... */
588 #define MAX_RATES_LENGTH ((u8)12)
589 #define MAX_RATES_EX_LENGTH ((u8)16)
590 #define MAX_NETWORK_COUNT 128
592 #define CRC_LENGTH 4U
594 #define MAX_WPA_IE_LEN 64
596 #define NETWORK_EMPTY_ESSID (1<<0)
597 #define NETWORK_HAS_OFDM (1<<1)
598 #define NETWORK_HAS_CCK (1<<2)
600 struct ieee80211_network {
601 /* These entries are used to identify a unique network */
604 /* Ensure null-terminated for any debug msgs */
605 u8 ssid[IW_ESSID_MAX_SIZE + 1];
608 /* These are network statistics */
609 struct ieee80211_rx_stats stats;
611 u8 rates[MAX_RATES_LENGTH];
613 u8 rates_ex[MAX_RATES_EX_LENGTH];
615 unsigned long last_scanned;
623 u8 wpa_ie[MAX_WPA_IE_LEN];
625 u8 rsn_ie[MAX_WPA_IE_LEN];
627 struct list_head list;
630 enum ieee80211_state {
631 IEEE80211_UNINITIALIZED = 0,
632 IEEE80211_INITIALIZED,
633 IEEE80211_ASSOCIATING,
634 IEEE80211_ASSOCIATED,
635 IEEE80211_AUTHENTICATING,
636 IEEE80211_AUTHENTICATED,
640 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
641 #define DEFAULT_FTS 2346
643 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
644 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
646 struct ieee80211_device {
647 struct net_device *dev;
648 struct ieee80211_security sec;
650 /* Bookkeeping structures */
651 struct net_device_stats stats;
652 struct ieee80211_stats ieee_stats;
654 /* Probe / Beacon management */
655 struct list_head network_free_list;
656 struct list_head network_list;
657 struct ieee80211_network *networks;
661 int iw_mode; /* operating mode (IW_MODE_*) */
662 struct iw_spy_data spy_data; /* iwspy support */
666 int tx_headroom; /* Set to size of any additional room needed at front
667 * of allocated Tx SKBs */
670 /* WEP and other encryption related settings at the device level */
671 int open_wep; /* Set to 1 to allow unencrypted frames */
673 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
676 /* If the host performs {en,de}cryption, then set to 1 */
679 int ieee802_1x; /* is IEEE 802.1X used */
683 int drop_unencrypted;
684 int tkip_countermeasures;
689 struct list_head crypt_deinit_list;
690 struct ieee80211_crypt_data *crypt[WEP_KEYS];
691 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
692 struct timer_list crypt_deinit_timer;
695 int bcrx_sta_key; /* use individual keys to override default keys even
696 * with RX of broad/multicast frames */
698 /* Fragmentation structures */
699 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
700 unsigned int frag_next_idx;
701 u16 fts; /* Fragmentation Threshold */
703 /* Association info */
706 enum ieee80211_state state;
708 int mode; /* A, B, G */
709 int modulation; /* CCK, OFDM */
710 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
711 int abg_true; /* ABG flag */
716 /* Callback functions */
717 void (*set_security) (struct net_device * dev,
718 struct ieee80211_security * sec);
719 int (*hard_start_xmit) (struct ieee80211_txb * txb,
720 struct net_device * dev);
721 int (*reset_port) (struct net_device * dev);
723 /* This must be the last item so that it points to the data
724 * allocated beyond this structure by alloc_ieee80211 */
728 #define IEEE_A (1<<0)
729 #define IEEE_B (1<<1)
730 #define IEEE_G (1<<2)
731 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
733 extern inline void *ieee80211_priv(struct net_device *dev)
735 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
738 extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
740 /* Single white space is for Linksys APs */
741 if (essid_len == 1 && essid[0] == ' ')
744 /* Otherwise, if the entire essid is 0, we assume it is hidden */
747 if (essid[essid_len] != '\0')
754 extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
758 * It is possible for both access points and our device to support
759 * combinations of modes, so as long as there is one valid combination
760 * of ap/device supported modes, then return success
763 if ((mode & IEEE_A) &&
764 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
765 (ieee->freq_band & IEEE80211_52GHZ_BAND))
768 if ((mode & IEEE_G) &&
769 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
770 (ieee->freq_band & IEEE80211_24GHZ_BAND))
773 if ((mode & IEEE_B) &&
774 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
775 (ieee->freq_band & IEEE80211_24GHZ_BAND))
781 extern inline int ieee80211_get_hdrlen(u16 fc)
783 int hdrlen = IEEE80211_3ADDR_LEN;
785 switch (WLAN_FC_GET_TYPE(fc)) {
786 case IEEE80211_FTYPE_DATA:
787 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
788 hdrlen = IEEE80211_4ADDR_LEN;
790 case IEEE80211_FTYPE_CTL:
791 switch (WLAN_FC_GET_STYPE(fc)) {
792 case IEEE80211_STYPE_CTS:
793 case IEEE80211_STYPE_ACK:
794 hdrlen = IEEE80211_1ADDR_LEN;
797 hdrlen = IEEE80211_2ADDR_LEN;
807 extern void free_ieee80211(struct net_device *dev);
808 extern struct net_device *alloc_ieee80211(int sizeof_priv);
810 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
813 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
814 extern void ieee80211_txb_free(struct ieee80211_txb *);
817 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
818 struct ieee80211_rx_stats *rx_stats);
819 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
820 struct ieee80211_hdr *header,
821 struct ieee80211_rx_stats *stats);
824 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
825 struct iw_request_info *info,
826 union iwreq_data *wrqu, char *key);
827 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
828 struct iw_request_info *info,
829 union iwreq_data *wrqu, char *key);
830 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
831 struct iw_request_info *info,
832 union iwreq_data *wrqu, char *key);
833 #if WIRELESS_EXT > 17
834 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
835 struct iw_request_info *info,
836 union iwreq_data *wrqu, char *extra);
837 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
838 struct iw_request_info *info,
839 union iwreq_data *wrqu, char *extra);
842 extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
847 extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
852 #endif /* IEEE80211_H */