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>
28 #define IW_QUAL_QUAL_INVALID 0x10
29 #define IW_QUAL_LEVEL_INVALID 0x20
30 #define IW_QUAL_NOISE_INVALID 0x40
31 #define IW_QUAL_QUAL_UPDATED 0x1
32 #define IW_QUAL_LEVEL_UPDATED 0x2
33 #define IW_QUAL_NOISE_UPDATED 0x4
36 #define IEEE80211_DATA_LEN 2304
37 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
40 The figure in section 7.1.2 suggests a body size of up to 2312
41 bytes is allowed, which is a bit confusing, I suspect this
42 represents the 2304 bytes of real data, plus a possible 8 bytes of
43 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
46 #define IEEE80211_HLEN 30
47 #define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
49 struct ieee80211_hdr {
57 } __attribute__ ((packed));
59 struct ieee80211_hdr_3addr {
66 } __attribute__ ((packed));
76 static const char *eap_types[] = {
77 [EAP_PACKET] = "EAP-Packet",
78 [EAPOL_START] = "EAPOL-Start",
79 [EAPOL_LOGOFF] = "EAPOL-Logoff",
80 [EAPOL_KEY] = "EAPOL-Key",
81 [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
84 static inline const char *eap_get_type(int type)
86 return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
95 } __attribute__ ((packed));
97 #define IEEE80211_1ADDR_LEN 10
98 #define IEEE80211_2ADDR_LEN 16
99 #define IEEE80211_3ADDR_LEN 24
100 #define IEEE80211_4ADDR_LEN 30
101 #define IEEE80211_FCS_LEN 4
103 #define MIN_FRAG_THRESHOLD 256U
104 #define MAX_FRAG_THRESHOLD 2346U
106 /* Frame control field constants */
107 #define IEEE80211_FCTL_VERS 0x0003
108 #define IEEE80211_FCTL_FTYPE 0x000c
109 #define IEEE80211_FCTL_STYPE 0x00f0
110 #define IEEE80211_FCTL_TODS 0x0100
111 #define IEEE80211_FCTL_FROMDS 0x0200
112 #define IEEE80211_FCTL_MOREFRAGS 0x0400
113 #define IEEE80211_FCTL_RETRY 0x0800
114 #define IEEE80211_FCTL_PM 0x1000
115 #define IEEE80211_FCTL_MOREDATA 0x2000
116 #define IEEE80211_FCTL_PROTECTED 0x4000
117 #define IEEE80211_FCTL_ORDER 0x8000
119 #define IEEE80211_FTYPE_MGMT 0x0000
120 #define IEEE80211_FTYPE_CTL 0x0004
121 #define IEEE80211_FTYPE_DATA 0x0008
124 #define IEEE80211_STYPE_ASSOC_REQ 0x0000
125 #define IEEE80211_STYPE_ASSOC_RESP 0x0010
126 #define IEEE80211_STYPE_REASSOC_REQ 0x0020
127 #define IEEE80211_STYPE_REASSOC_RESP 0x0030
128 #define IEEE80211_STYPE_PROBE_REQ 0x0040
129 #define IEEE80211_STYPE_PROBE_RESP 0x0050
130 #define IEEE80211_STYPE_BEACON 0x0080
131 #define IEEE80211_STYPE_ATIM 0x0090
132 #define IEEE80211_STYPE_DISASSOC 0x00A0
133 #define IEEE80211_STYPE_AUTH 0x00B0
134 #define IEEE80211_STYPE_DEAUTH 0x00C0
135 #define IEEE80211_STYPE_ACTION 0x00D0
138 #define IEEE80211_STYPE_PSPOLL 0x00A0
139 #define IEEE80211_STYPE_RTS 0x00B0
140 #define IEEE80211_STYPE_CTS 0x00C0
141 #define IEEE80211_STYPE_ACK 0x00D0
142 #define IEEE80211_STYPE_CFEND 0x00E0
143 #define IEEE80211_STYPE_CFENDACK 0x00F0
146 #define IEEE80211_STYPE_DATA 0x0000
147 #define IEEE80211_STYPE_DATA_CFACK 0x0010
148 #define IEEE80211_STYPE_DATA_CFPOLL 0x0020
149 #define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
150 #define IEEE80211_STYPE_NULLFUNC 0x0040
151 #define IEEE80211_STYPE_CFACK 0x0050
152 #define IEEE80211_STYPE_CFPOLL 0x0060
153 #define IEEE80211_STYPE_CFACKPOLL 0x0070
155 #define IEEE80211_SCTL_FRAG 0x000F
156 #define IEEE80211_SCTL_SEQ 0xFFF0
161 #ifdef CONFIG_IEEE80211_DEBUG
162 extern u32 ieee80211_debug_level;
163 #define IEEE80211_DEBUG(level, fmt, args...) \
164 do { if (ieee80211_debug_level & (level)) \
165 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
166 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
168 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
169 #endif /* CONFIG_IEEE80211_DEBUG */
172 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
174 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
175 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
177 /* escape_essid() is intended to be used in debug (and possibly error)
178 * messages. It should never be used for passing essid to user space. */
179 const char *escape_essid(const char *essid, u8 essid_len);
183 * To use the debug system:
185 * If you are defining a new debug classification, simply add it to the #define
186 * list here in the form of:
188 * #define IEEE80211_DL_xxxx VALUE
190 * shifting value to the left one bit from the previous entry. xxxx should be
191 * the name of the classification (for example, WEP)
193 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
194 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
195 * to send output to that classification.
197 * To add your debug level to the list of levels seen when you perform
199 * % cat /proc/net/ipw/debug_level
201 * you simply need to add your entry to the ipw_debug_levels array.
203 * If you do not see debug_level in /proc/net/ipw then you do not have
204 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
208 #define IEEE80211_DL_INFO (1<<0)
209 #define IEEE80211_DL_WX (1<<1)
210 #define IEEE80211_DL_SCAN (1<<2)
211 #define IEEE80211_DL_STATE (1<<3)
212 #define IEEE80211_DL_MGMT (1<<4)
213 #define IEEE80211_DL_FRAG (1<<5)
214 #define IEEE80211_DL_EAP (1<<6)
215 #define IEEE80211_DL_DROP (1<<7)
217 #define IEEE80211_DL_TX (1<<8)
218 #define IEEE80211_DL_RX (1<<9)
220 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
221 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
222 #define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
224 #define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
225 #define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
226 #define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
227 #define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
228 #define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
229 #define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
230 #define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
231 #define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
232 #define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
233 #include <linux/netdevice.h>
234 #include <linux/wireless.h>
235 #include <linux/if_arp.h> /* ARPHRD_ETHER */
238 #define WIRELESS_SPY /* enable iwspy support */
240 #include <net/iw_handler.h> /* new driver API */
243 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
244 #endif /* ETH_P_PAE */
246 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
248 #ifndef ETH_P_80211_RAW
249 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
252 /* IEEE 802.11 defines */
254 #define P80211_OUI_LEN 3
256 struct ieee80211_snap_hdr {
258 u8 dsap; /* always 0xAA */
259 u8 ssap; /* always 0xAA */
260 u8 ctrl; /* always 0x03 */
261 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
263 } __attribute__ ((packed));
265 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
267 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
268 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
269 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
271 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
272 #define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
274 /* Authentication algorithms */
275 #define WLAN_AUTH_OPEN 0
276 #define WLAN_AUTH_SHARED_KEY 1
278 #define WLAN_AUTH_CHALLENGE_LEN 128
280 #define WLAN_CAPABILITY_ESS (1<<0)
281 #define WLAN_CAPABILITY_IBSS (1<<1)
282 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
283 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
284 #define WLAN_CAPABILITY_PRIVACY (1<<4)
285 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
286 #define WLAN_CAPABILITY_PBCC (1<<6)
287 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
288 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
289 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
290 #define WLAN_CAPABILITY_OSSS_OFDM (1<<13)
293 enum ieee80211_statuscode {
294 WLAN_STATUS_SUCCESS = 0,
295 WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
296 WLAN_STATUS_CAPS_UNSUPPORTED = 10,
297 WLAN_STATUS_REASSOC_NO_ASSOC = 11,
298 WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
299 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
300 WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
301 WLAN_STATUS_CHALLENGE_FAIL = 15,
302 WLAN_STATUS_AUTH_TIMEOUT = 16,
303 WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
304 WLAN_STATUS_ASSOC_DENIED_RATES = 18,
306 WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
307 WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
308 WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
310 WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
311 WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
312 WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
314 WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
315 WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
317 WLAN_STATUS_INVALID_IE = 40,
318 WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
319 WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
320 WLAN_STATUS_INVALID_AKMP = 43,
321 WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
322 WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
323 WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
327 enum ieee80211_reasoncode {
328 WLAN_REASON_UNSPECIFIED = 1,
329 WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
330 WLAN_REASON_DEAUTH_LEAVING = 3,
331 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
332 WLAN_REASON_DISASSOC_AP_BUSY = 5,
333 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
334 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
335 WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
336 WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
338 WLAN_REASON_DISASSOC_BAD_POWER = 10,
339 WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
341 WLAN_REASON_INVALID_IE = 13,
342 WLAN_REASON_MIC_FAILURE = 14,
343 WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
344 WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
345 WLAN_REASON_IE_DIFFERENT = 17,
346 WLAN_REASON_INVALID_GROUP_CIPHER = 18,
347 WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
348 WLAN_REASON_INVALID_AKMP = 20,
349 WLAN_REASON_UNSUPP_RSN_VERSION = 21,
350 WLAN_REASON_INVALID_RSN_IE_CAP = 22,
351 WLAN_REASON_IEEE8021X_FAILED = 23,
352 WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
356 #define IEEE80211_STATMASK_SIGNAL (1<<0)
357 #define IEEE80211_STATMASK_RSSI (1<<1)
358 #define IEEE80211_STATMASK_NOISE (1<<2)
359 #define IEEE80211_STATMASK_RATE (1<<3)
360 #define IEEE80211_STATMASK_WEMASK 0x7
363 #define IEEE80211_CCK_MODULATION (1<<0)
364 #define IEEE80211_OFDM_MODULATION (1<<1)
366 #define IEEE80211_24GHZ_BAND (1<<0)
367 #define IEEE80211_52GHZ_BAND (1<<1)
369 #define IEEE80211_CCK_RATE_1MB 0x02
370 #define IEEE80211_CCK_RATE_2MB 0x04
371 #define IEEE80211_CCK_RATE_5MB 0x0B
372 #define IEEE80211_CCK_RATE_11MB 0x16
373 #define IEEE80211_OFDM_RATE_6MB 0x0C
374 #define IEEE80211_OFDM_RATE_9MB 0x12
375 #define IEEE80211_OFDM_RATE_12MB 0x18
376 #define IEEE80211_OFDM_RATE_18MB 0x24
377 #define IEEE80211_OFDM_RATE_24MB 0x30
378 #define IEEE80211_OFDM_RATE_36MB 0x48
379 #define IEEE80211_OFDM_RATE_48MB 0x60
380 #define IEEE80211_OFDM_RATE_54MB 0x6C
381 #define IEEE80211_BASIC_RATE_MASK 0x80
383 #define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
384 #define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
385 #define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
386 #define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
387 #define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
388 #define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
389 #define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
390 #define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
391 #define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
392 #define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
393 #define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
394 #define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
396 #define IEEE80211_CCK_RATES_MASK 0x0000000F
397 #define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
398 IEEE80211_CCK_RATE_2MB_MASK)
399 #define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
400 IEEE80211_CCK_RATE_5MB_MASK | \
401 IEEE80211_CCK_RATE_11MB_MASK)
403 #define IEEE80211_OFDM_RATES_MASK 0x00000FF0
404 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
405 IEEE80211_OFDM_RATE_12MB_MASK | \
406 IEEE80211_OFDM_RATE_24MB_MASK)
407 #define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
408 IEEE80211_OFDM_RATE_9MB_MASK | \
409 IEEE80211_OFDM_RATE_18MB_MASK | \
410 IEEE80211_OFDM_RATE_36MB_MASK | \
411 IEEE80211_OFDM_RATE_48MB_MASK | \
412 IEEE80211_OFDM_RATE_54MB_MASK)
413 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
414 IEEE80211_CCK_DEFAULT_RATES_MASK)
416 #define IEEE80211_NUM_OFDM_RATES 8
417 #define IEEE80211_NUM_CCK_RATES 4
418 #define IEEE80211_OFDM_SHIFT_MASK_A 4
423 /* NOTE: This data is for statistical purposes; not all hardware provides this
424 * information for frames received. Not setting these will not cause
425 * any adverse affects. */
426 struct ieee80211_rx_stats {
431 u16 rate; /* in 100 kbps */
439 /* IEEE 802.11 requires that STA supports concurrent reception of at least
440 * three fragmented frames. This define can be increased to support more
441 * concurrent frames, but it should be noted that each entry can consume about
442 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
443 #define IEEE80211_FRAG_CACHE_LEN 4
445 struct ieee80211_frag_entry {
446 unsigned long first_frag_time;
448 unsigned int last_frag;
450 u8 src_addr[ETH_ALEN];
451 u8 dst_addr[ETH_ALEN];
454 struct ieee80211_stats {
455 unsigned int tx_unicast_frames;
456 unsigned int tx_multicast_frames;
457 unsigned int tx_fragments;
458 unsigned int tx_unicast_octets;
459 unsigned int tx_multicast_octets;
460 unsigned int tx_deferred_transmissions;
461 unsigned int tx_single_retry_frames;
462 unsigned int tx_multiple_retry_frames;
463 unsigned int tx_retry_limit_exceeded;
464 unsigned int tx_discards;
465 unsigned int rx_unicast_frames;
466 unsigned int rx_multicast_frames;
467 unsigned int rx_fragments;
468 unsigned int rx_unicast_octets;
469 unsigned int rx_multicast_octets;
470 unsigned int rx_fcs_errors;
471 unsigned int rx_discards_no_buffer;
472 unsigned int tx_discards_wrong_sa;
473 unsigned int rx_discards_undecryptable;
474 unsigned int rx_message_in_msg_fragments;
475 unsigned int rx_message_in_bad_msg_fragments;
478 struct ieee80211_device;
480 #include "ieee80211_crypt.h"
482 #define SEC_KEY_1 (1<<0)
483 #define SEC_KEY_2 (1<<1)
484 #define SEC_KEY_3 (1<<2)
485 #define SEC_KEY_4 (1<<3)
486 #define SEC_ACTIVE_KEY (1<<4)
487 #define SEC_AUTH_MODE (1<<5)
488 #define SEC_UNICAST_GROUP (1<<6)
489 #define SEC_LEVEL (1<<7)
490 #define SEC_ENABLED (1<<8)
492 #define SEC_LEVEL_0 0 /* None */
493 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
494 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
495 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
496 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
499 #define WEP_KEY_LEN 13
501 struct ieee80211_security {
506 unicast_uses_group:1;
507 u8 key_sizes[WEP_KEYS];
508 u8 keys[WEP_KEYS][WEP_KEY_LEN];
511 } __attribute__ ((packed));
516 802.11 data frame from AP
518 ,-------------------------------------------------------------------.
519 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
520 |------|------|---------|---------|---------|------|---------|------|
521 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
522 | | tion | (BSSID) | | | ence | data | |
523 `-------------------------------------------------------------------'
529 #define BEACON_PROBE_SSID_ID_POSITION 12
531 /* Management Frame Information Element Types */
532 enum ieee80211_mfie {
535 MFIE_TYPE_FH_SET = 2,
536 MFIE_TYPE_DS_SET = 3,
537 MFIE_TYPE_CF_SET = 4,
539 MFIE_TYPE_IBSS_SET = 6,
540 MFIE_TYPE_COUNTRY = 7,
541 MFIE_TYPE_HOP_PARAMS = 8,
542 MFIE_TYPE_HOP_TABLE = 9,
543 MFIE_TYPE_REQUEST = 10,
544 MFIE_TYPE_CHALLENGE = 16,
545 MFIE_TYPE_POWER_CONSTRAINT = 32,
546 MFIE_TYPE_POWER_CAPABILITY = 33,
547 MFIE_TYPE_TPC_REQUEST = 34,
548 MFIE_TYPE_TPC_REPORT = 35,
549 MFIE_TYPE_SUPP_CHANNELS = 36,
551 MFIE_TYPE_MEASURE_REQUEST = 38,
552 MFIE_TYPE_MEASURE_REPORT = 39,
553 MFIE_TYPE_QUIET = 40,
554 MFIE_TYPE_IBSS_DFS = 41,
555 MFIE_TYPE_ERP_INFO = 42,
557 MFIE_TYPE_RATES_EX = 50,
558 MFIE_TYPE_GENERIC = 221,
561 struct ieee80211_info_element_hdr {
564 } __attribute__ ((packed));
566 struct ieee80211_info_element {
570 } __attribute__ ((packed));
573 * These are the data types that can make up management packets
579 u8 current_ap[ETH_ALEN];
582 u16 association_id:14, reserved:2;
583 } __attribute__ ((packed));
589 struct ieee80211_authentication {
590 struct ieee80211_hdr_3addr header;
594 struct ieee80211_info_element info_element;
595 } __attribute__ ((packed));
598 struct ieee80211_probe_response {
599 struct ieee80211_hdr_3addr header;
601 __le16 beacon_interval;
603 struct ieee80211_info_element info_element;
604 } __attribute__ ((packed));
606 struct ieee80211_assoc_request_frame {
608 __le16 listen_interval;
609 u8 current_ap[ETH_ALEN];
610 struct ieee80211_info_element info_element;
611 } __attribute__ ((packed));
613 struct ieee80211_assoc_response_frame {
614 struct ieee80211_hdr_3addr header;
618 struct ieee80211_info_element info_element; /* supported rates */
619 } __attribute__ ((packed));
622 struct ieee80211_txb {
628 struct sk_buff *fragments[0];
632 /* SWEEP TABLE ENTRIES NUMBER */
633 #define MAX_SWEEP_TAB_ENTRIES 42
634 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
635 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
636 * only use 8, and then use extended rates for the remaining supported
637 * rates. Other APs, however, stick all of their supported rates on the
638 * main rates information element... */
639 #define MAX_RATES_LENGTH ((u8)12)
640 #define MAX_RATES_EX_LENGTH ((u8)16)
641 #define MAX_NETWORK_COUNT 128
643 #define CRC_LENGTH 4U
645 #define MAX_WPA_IE_LEN 64
647 #define NETWORK_EMPTY_ESSID (1<<0)
648 #define NETWORK_HAS_OFDM (1<<1)
649 #define NETWORK_HAS_CCK (1<<2)
651 struct ieee80211_network {
652 /* These entries are used to identify a unique network */
655 /* Ensure null-terminated for any debug msgs */
656 u8 ssid[IW_ESSID_MAX_SIZE + 1];
659 /* These are network statistics */
660 struct ieee80211_rx_stats stats;
662 u8 rates[MAX_RATES_LENGTH];
664 u8 rates_ex[MAX_RATES_EX_LENGTH];
666 unsigned long last_scanned;
674 u8 wpa_ie[MAX_WPA_IE_LEN];
676 u8 rsn_ie[MAX_WPA_IE_LEN];
678 struct list_head list;
681 enum ieee80211_state {
682 IEEE80211_UNINITIALIZED = 0,
683 IEEE80211_INITIALIZED,
684 IEEE80211_ASSOCIATING,
685 IEEE80211_ASSOCIATED,
686 IEEE80211_AUTHENTICATING,
687 IEEE80211_AUTHENTICATED,
691 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
692 #define DEFAULT_FTS 2346
695 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
696 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
698 struct ieee80211_device {
699 struct net_device *dev;
701 /* Bookkeeping structures */
702 struct net_device_stats stats;
703 struct ieee80211_stats ieee_stats;
705 /* Probe / Beacon management */
706 struct list_head network_free_list;
707 struct list_head network_list;
708 struct ieee80211_network *networks;
712 int iw_mode; /* operating mode (IW_MODE_*) */
716 int tx_headroom; /* Set to size of any additional room needed at front
717 * of allocated Tx SKBs */
720 /* WEP and other encryption related settings at the device level */
721 int open_wep; /* Set to 1 to allow unencrypted frames */
723 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
726 /* If the host performs {en,de}cryption, then set to 1 */
729 int ieee802_1x; /* is IEEE 802.1X used */
733 int drop_unencrypted;
734 int tkip_countermeasures;
739 struct list_head crypt_deinit_list;
740 struct ieee80211_crypt_data *crypt[WEP_KEYS];
741 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
742 struct timer_list crypt_deinit_timer;
744 int bcrx_sta_key; /* use individual keys to override default keys even
745 * with RX of broad/multicast frames */
747 /* Fragmentation structures */
748 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
749 unsigned int frag_next_idx;
750 u16 fts; /* Fragmentation Threshold */
752 /* Association info */
755 enum ieee80211_state state;
757 int mode; /* A, B, G */
758 int modulation; /* CCK, OFDM */
759 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
760 int abg_ture; /* ABG flag */
762 /* Callback functions */
763 void (*set_security)(struct net_device *dev,
764 struct ieee80211_security *sec);
765 int (*hard_start_xmit)(struct ieee80211_txb *txb,
766 struct net_device *dev);
767 int (*reset_port)(struct net_device *dev);
769 /* This must be the last item so that it points to the data
770 * allocated beyond this structure by alloc_ieee80211 */
774 #define IEEE_A (1<<0)
775 #define IEEE_B (1<<1)
776 #define IEEE_G (1<<2)
777 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
779 extern inline void *ieee80211_priv(struct net_device *dev)
781 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
784 extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
786 /* Single white space is for Linksys APs */
787 if (essid_len == 1 && essid[0] == ' ')
790 /* Otherwise, if the entire essid is 0, we assume it is hidden */
793 if (essid[essid_len] != '\0')
800 extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
803 * It is possible for both access points and our device to support
804 * combinations of modes, so as long as there is one valid combination
805 * of ap/device supported modes, then return success
808 if ((mode & IEEE_A) &&
809 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
810 (ieee->freq_band & IEEE80211_52GHZ_BAND))
813 if ((mode & IEEE_G) &&
814 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
815 (ieee->freq_band & IEEE80211_24GHZ_BAND))
818 if ((mode & IEEE_B) &&
819 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
820 (ieee->freq_band & IEEE80211_24GHZ_BAND))
826 extern inline int ieee80211_get_hdrlen(u16 fc)
828 int hdrlen = IEEE80211_3ADDR_LEN;
830 switch (WLAN_FC_GET_TYPE(fc)) {
831 case IEEE80211_FTYPE_DATA:
832 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
833 hdrlen = IEEE80211_4ADDR_LEN;
835 case IEEE80211_FTYPE_CTL:
836 switch (WLAN_FC_GET_STYPE(fc)) {
837 case IEEE80211_STYPE_CTS:
838 case IEEE80211_STYPE_ACK:
839 hdrlen = IEEE80211_1ADDR_LEN;
842 hdrlen = IEEE80211_2ADDR_LEN;
854 extern void free_ieee80211(struct net_device *dev);
855 extern struct net_device *alloc_ieee80211(int sizeof_priv);
857 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
860 extern int ieee80211_xmit(struct sk_buff *skb,
861 struct net_device *dev);
862 extern void ieee80211_txb_free(struct ieee80211_txb *);
866 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
867 struct ieee80211_rx_stats *rx_stats);
868 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
869 struct ieee80211_hdr *header,
870 struct ieee80211_rx_stats *stats);
873 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
874 struct iw_request_info *info,
875 union iwreq_data *wrqu, char *key);
876 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
877 struct iw_request_info *info,
878 union iwreq_data *wrqu, char *key);
879 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
880 struct iw_request_info *info,
881 union iwreq_data *wrqu, char *key);
884 extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
889 extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
895 #endif /* IEEE80211_H */