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Linux kernel mirror (for testing)
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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 * <jkmaline@cc.hut.fi>
10 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
11 *
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004, 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#ifndef IEEE80211_H
22#define IEEE80211_H
23
24#include <linux/if_ether.h> /* ETH_ALEN */
25#include <linux/kernel.h> /* ARRAY_SIZE */
26
27#if WIRELESS_EXT < 17
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
34#endif
35
36#define IEEE80211_DATA_LEN 2304
37/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
38 6.2.1.1.2.
39
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) */
44
45
46#define IEEE80211_HLEN 30
47#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
48
49struct ieee80211_hdr {
50 u16 frame_ctl;
51 u16 duration_id;
52 u8 addr1[ETH_ALEN];
53 u8 addr2[ETH_ALEN];
54 u8 addr3[ETH_ALEN];
55 u16 seq_ctl;
56 u8 addr4[ETH_ALEN];
57} __attribute__ ((packed));
58
59struct ieee80211_hdr_3addr {
60 u16 frame_ctl;
61 u16 duration_id;
62 u8 addr1[ETH_ALEN];
63 u8 addr2[ETH_ALEN];
64 u8 addr3[ETH_ALEN];
65 u16 seq_ctl;
66} __attribute__ ((packed));
67
68enum eap_type {
69 EAP_PACKET = 0,
70 EAPOL_START,
71 EAPOL_LOGOFF,
72 EAPOL_KEY,
73 EAPOL_ENCAP_ASF_ALERT
74};
75
76static 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"
82};
83
84static inline const char *eap_get_type(int type)
85{
86 return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
87}
88
89struct eapol {
90 u8 snap[6];
91 u16 ethertype;
92 u8 version;
93 u8 type;
94 u16 length;
95} __attribute__ ((packed));
96
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
102
103#define MIN_FRAG_THRESHOLD 256U
104#define MAX_FRAG_THRESHOLD 2346U
105
106/* Frame control field constants */
107#define IEEE80211_FCTL_VERS 0x0002
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_WEP 0x4000
117#define IEEE80211_FCTL_ORDER 0x8000
118
119#define IEEE80211_FTYPE_MGMT 0x0000
120#define IEEE80211_FTYPE_CTL 0x0004
121#define IEEE80211_FTYPE_DATA 0x0008
122
123/* management */
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
136/* control */
137#define IEEE80211_STYPE_PSPOLL 0x00A0
138#define IEEE80211_STYPE_RTS 0x00B0
139#define IEEE80211_STYPE_CTS 0x00C0
140#define IEEE80211_STYPE_ACK 0x00D0
141#define IEEE80211_STYPE_CFEND 0x00E0
142#define IEEE80211_STYPE_CFENDACK 0x00F0
143
144/* data */
145#define IEEE80211_STYPE_DATA 0x0000
146#define IEEE80211_STYPE_DATA_CFACK 0x0010
147#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
148#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
149#define IEEE80211_STYPE_NULLFUNC 0x0040
150#define IEEE80211_STYPE_CFACK 0x0050
151#define IEEE80211_STYPE_CFPOLL 0x0060
152#define IEEE80211_STYPE_CFACKPOLL 0x0070
153
154#define IEEE80211_SCTL_FRAG 0x000F
155#define IEEE80211_SCTL_SEQ 0xFFF0
156
157
158/* debug macros */
159
160#ifdef CONFIG_IEEE80211_DEBUG
161extern u32 ieee80211_debug_level;
162#define IEEE80211_DEBUG(level, fmt, args...) \
163do { if (ieee80211_debug_level & (level)) \
164 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
165 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
166#else
167#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
168#endif /* CONFIG_IEEE80211_DEBUG */
169
170/*
171 * To use the debug system;
172 *
173 * If you are defining a new debug classification, simply add it to the #define
174 * list here in the form of:
175 *
176 * #define IEEE80211_DL_xxxx VALUE
177 *
178 * shifting value to the left one bit from the previous entry. xxxx should be
179 * the name of the classification (for example, WEP)
180 *
181 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
182 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
183 * to send output to that classification.
184 *
185 * To add your debug level to the list of levels seen when you perform
186 *
187 * % cat /proc/net/ipw/debug_level
188 *
189 * you simply need to add your entry to the ipw_debug_levels array.
190 *
191 * If you do not see debug_level in /proc/net/ipw then you do not have
192 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
193 *
194 */
195
196#define IEEE80211_DL_INFO (1<<0)
197#define IEEE80211_DL_WX (1<<1)
198#define IEEE80211_DL_SCAN (1<<2)
199#define IEEE80211_DL_STATE (1<<3)
200#define IEEE80211_DL_MGMT (1<<4)
201#define IEEE80211_DL_FRAG (1<<5)
202#define IEEE80211_DL_EAP (1<<6)
203#define IEEE80211_DL_DROP (1<<7)
204
205#define IEEE80211_DL_TX (1<<8)
206#define IEEE80211_DL_RX (1<<9)
207
208#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
209#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
210#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
211
212#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
213#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
214#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
215#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
216#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
217#define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
218#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
219#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
220#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
221#include <linux/netdevice.h>
222#include <linux/wireless.h>
223#include <linux/if_arp.h> /* ARPHRD_ETHER */
224
225#ifndef WIRELESS_SPY
226#define WIRELESS_SPY // enable iwspy support
227#endif
228#include <net/iw_handler.h> // new driver API
229
230#ifndef ETH_P_PAE
231#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
232#endif /* ETH_P_PAE */
233
234#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
235
236#ifndef ETH_P_80211_RAW
237#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
238#endif
239
240/* IEEE 802.11 defines */
241
242#define P80211_OUI_LEN 3
243
244struct ieee80211_snap_hdr {
245
246 u8 dsap; /* always 0xAA */
247 u8 ssap; /* always 0xAA */
248 u8 ctrl; /* always 0x03 */
249 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
250
251} __attribute__ ((packed));
252
253#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
254
255#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
256#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
257
258#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
259#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
260
261/* Authentication algorithms */
262#define WLAN_AUTH_OPEN 0
263#define WLAN_AUTH_SHARED_KEY 1
264
265#define WLAN_AUTH_CHALLENGE_LEN 128
266
267#define WLAN_CAPABILITY_BSS (1<<0)
268#define WLAN_CAPABILITY_IBSS (1<<1)
269#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
270#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
271#define WLAN_CAPABILITY_PRIVACY (1<<4)
272#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
273#define WLAN_CAPABILITY_PBCC (1<<6)
274#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
275
276/* Status codes */
277#define WLAN_STATUS_SUCCESS 0
278#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
279#define WLAN_STATUS_CAPS_UNSUPPORTED 10
280#define WLAN_STATUS_REASSOC_NO_ASSOC 11
281#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
282#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
283#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
284#define WLAN_STATUS_CHALLENGE_FAIL 15
285#define WLAN_STATUS_AUTH_TIMEOUT 16
286#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
287#define WLAN_STATUS_ASSOC_DENIED_RATES 18
288/* 802.11b */
289#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
290#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
291#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
292
293/* Reason codes */
294#define WLAN_REASON_UNSPECIFIED 1
295#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
296#define WLAN_REASON_DEAUTH_LEAVING 3
297#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
298#define WLAN_REASON_DISASSOC_AP_BUSY 5
299#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
300#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
301#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
302#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
303
304
305#define IEEE80211_STATMASK_SIGNAL (1<<0)
306#define IEEE80211_STATMASK_RSSI (1<<1)
307#define IEEE80211_STATMASK_NOISE (1<<2)
308#define IEEE80211_STATMASK_RATE (1<<3)
309#define IEEE80211_STATMASK_WEMASK 0x7
310
311
312#define IEEE80211_CCK_MODULATION (1<<0)
313#define IEEE80211_OFDM_MODULATION (1<<1)
314
315#define IEEE80211_24GHZ_BAND (1<<0)
316#define IEEE80211_52GHZ_BAND (1<<1)
317
318#define IEEE80211_CCK_RATE_1MB 0x02
319#define IEEE80211_CCK_RATE_2MB 0x04
320#define IEEE80211_CCK_RATE_5MB 0x0B
321#define IEEE80211_CCK_RATE_11MB 0x16
322#define IEEE80211_OFDM_RATE_6MB 0x0C
323#define IEEE80211_OFDM_RATE_9MB 0x12
324#define IEEE80211_OFDM_RATE_12MB 0x18
325#define IEEE80211_OFDM_RATE_18MB 0x24
326#define IEEE80211_OFDM_RATE_24MB 0x30
327#define IEEE80211_OFDM_RATE_36MB 0x48
328#define IEEE80211_OFDM_RATE_48MB 0x60
329#define IEEE80211_OFDM_RATE_54MB 0x6C
330#define IEEE80211_BASIC_RATE_MASK 0x80
331
332#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
333#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
334#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
335#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
336#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
337#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
338#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
339#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
340#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
341#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
342#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
343#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
344
345#define IEEE80211_CCK_RATES_MASK 0x0000000F
346#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
347 IEEE80211_CCK_RATE_2MB_MASK)
348#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
349 IEEE80211_CCK_RATE_5MB_MASK | \
350 IEEE80211_CCK_RATE_11MB_MASK)
351
352#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
353#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
354 IEEE80211_OFDM_RATE_12MB_MASK | \
355 IEEE80211_OFDM_RATE_24MB_MASK)
356#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
357 IEEE80211_OFDM_RATE_9MB_MASK | \
358 IEEE80211_OFDM_RATE_18MB_MASK | \
359 IEEE80211_OFDM_RATE_36MB_MASK | \
360 IEEE80211_OFDM_RATE_48MB_MASK | \
361 IEEE80211_OFDM_RATE_54MB_MASK)
362#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
363 IEEE80211_CCK_DEFAULT_RATES_MASK)
364
365#define IEEE80211_NUM_OFDM_RATES 8
366#define IEEE80211_NUM_CCK_RATES 4
367#define IEEE80211_OFDM_SHIFT_MASK_A 4
368
369
370
371
372/* NOTE: This data is for statistical purposes; not all hardware provides this
373 * information for frames received. Not setting these will not cause
374 * any adverse affects. */
375struct ieee80211_rx_stats {
376 u32 mac_time;
377 s8 rssi;
378 u8 signal;
379 u8 noise;
380 u16 rate; /* in 100 kbps */
381 u8 received_channel;
382 u8 control;
383 u8 mask;
384 u8 freq;
385 u16 len;
386};
387
388/* IEEE 802.11 requires that STA supports concurrent reception of at least
389 * three fragmented frames. This define can be increased to support more
390 * concurrent frames, but it should be noted that each entry can consume about
391 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
392#define IEEE80211_FRAG_CACHE_LEN 4
393
394struct ieee80211_frag_entry {
395 unsigned long first_frag_time;
396 unsigned int seq;
397 unsigned int last_frag;
398 struct sk_buff *skb;
399 u8 src_addr[ETH_ALEN];
400 u8 dst_addr[ETH_ALEN];
401};
402
403struct ieee80211_stats {
404 unsigned int tx_unicast_frames;
405 unsigned int tx_multicast_frames;
406 unsigned int tx_fragments;
407 unsigned int tx_unicast_octets;
408 unsigned int tx_multicast_octets;
409 unsigned int tx_deferred_transmissions;
410 unsigned int tx_single_retry_frames;
411 unsigned int tx_multiple_retry_frames;
412 unsigned int tx_retry_limit_exceeded;
413 unsigned int tx_discards;
414 unsigned int rx_unicast_frames;
415 unsigned int rx_multicast_frames;
416 unsigned int rx_fragments;
417 unsigned int rx_unicast_octets;
418 unsigned int rx_multicast_octets;
419 unsigned int rx_fcs_errors;
420 unsigned int rx_discards_no_buffer;
421 unsigned int tx_discards_wrong_sa;
422 unsigned int rx_discards_undecryptable;
423 unsigned int rx_message_in_msg_fragments;
424 unsigned int rx_message_in_bad_msg_fragments;
425};
426
427struct ieee80211_device;
428
429#include "ieee80211_crypt.h"
430
431#define SEC_KEY_1 (1<<0)
432#define SEC_KEY_2 (1<<1)
433#define SEC_KEY_3 (1<<2)
434#define SEC_KEY_4 (1<<3)
435#define SEC_ACTIVE_KEY (1<<4)
436#define SEC_AUTH_MODE (1<<5)
437#define SEC_UNICAST_GROUP (1<<6)
438#define SEC_LEVEL (1<<7)
439#define SEC_ENABLED (1<<8)
440
441#define SEC_LEVEL_0 0 /* None */
442#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
443#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
444#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
445#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
446
447#define WEP_KEYS 4
448#define WEP_KEY_LEN 13
449
450struct ieee80211_security {
451 u16 active_key:2,
452 enabled:1,
453 auth_mode:2,
454 auth_algo:4,
455 unicast_uses_group:1;
456 u8 key_sizes[WEP_KEYS];
457 u8 keys[WEP_KEYS][WEP_KEY_LEN];
458 u8 level;
459 u16 flags;
460} __attribute__ ((packed));
461
462
463/*
464
465 802.11 data frame from AP
466
467 ,-------------------------------------------------------------------.
468Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
469 |------|------|---------|---------|---------|------|---------|------|
470Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
471 | | tion | (BSSID) | | | ence | data | |
472 `-------------------------------------------------------------------'
473
474Total: 28-2340 bytes
475
476*/
477
478#define BEACON_PROBE_SSID_ID_POSITION 12
479
480/* Management Frame Information Element Types */
481#define MFIE_TYPE_SSID 0
482#define MFIE_TYPE_RATES 1
483#define MFIE_TYPE_FH_SET 2
484#define MFIE_TYPE_DS_SET 3
485#define MFIE_TYPE_CF_SET 4
486#define MFIE_TYPE_TIM 5
487#define MFIE_TYPE_IBSS_SET 6
488#define MFIE_TYPE_CHALLENGE 16
489#define MFIE_TYPE_RSN 48
490#define MFIE_TYPE_RATES_EX 50
491#define MFIE_TYPE_GENERIC 221
492
493struct ieee80211_info_element_hdr {
494 u8 id;
495 u8 len;
496} __attribute__ ((packed));
497
498struct ieee80211_info_element {
499 u8 id;
500 u8 len;
501 u8 data[0];
502} __attribute__ ((packed));
503
504/*
505 * These are the data types that can make up management packets
506 *
507 u16 auth_algorithm;
508 u16 auth_sequence;
509 u16 beacon_interval;
510 u16 capability;
511 u8 current_ap[ETH_ALEN];
512 u16 listen_interval;
513 struct {
514 u16 association_id:14, reserved:2;
515 } __attribute__ ((packed));
516 u32 time_stamp[2];
517 u16 reason;
518 u16 status;
519*/
520
521struct ieee80211_authentication {
522 struct ieee80211_hdr_3addr header;
523 u16 algorithm;
524 u16 transaction;
525 u16 status;
526 struct ieee80211_info_element info_element;
527} __attribute__ ((packed));
528
529
530struct ieee80211_probe_response {
531 struct ieee80211_hdr_3addr header;
532 u32 time_stamp[2];
533 u16 beacon_interval;
534 u16 capability;
535 struct ieee80211_info_element info_element;
536} __attribute__ ((packed));
537
538struct ieee80211_assoc_request_frame {
539 u16 capability;
540 u16 listen_interval;
541 u8 current_ap[ETH_ALEN];
542 struct ieee80211_info_element info_element;
543} __attribute__ ((packed));
544
545struct ieee80211_assoc_response_frame {
546 struct ieee80211_hdr_3addr header;
547 u16 capability;
548 u16 status;
549 u16 aid;
550 struct ieee80211_info_element info_element; /* supported rates */
551} __attribute__ ((packed));
552
553
554struct ieee80211_txb {
555 u8 nr_frags;
556 u8 encrypted;
557 u16 reserved;
558 u16 frag_size;
559 u16 payload_size;
560 struct sk_buff *fragments[0];
561};
562
563
564/* SWEEP TABLE ENTRIES NUMBER*/
565#define MAX_SWEEP_TAB_ENTRIES 42
566#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
567/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
568 * only use 8, and then use extended rates for the remaining supported
569 * rates. Other APs, however, stick all of their supported rates on the
570 * main rates information element... */
571#define MAX_RATES_LENGTH ((u8)12)
572#define MAX_RATES_EX_LENGTH ((u8)16)
573#define MAX_NETWORK_COUNT 128
574
575#define CRC_LENGTH 4U
576
577#define MAX_WPA_IE_LEN 64
578
579#define NETWORK_EMPTY_ESSID (1<<0)
580#define NETWORK_HAS_OFDM (1<<1)
581#define NETWORK_HAS_CCK (1<<2)
582
583struct ieee80211_network {
584 /* These entries are used to identify a unique network */
585 u8 bssid[ETH_ALEN];
586 u8 channel;
587 /* Ensure null-terminated for any debug msgs */
588 u8 ssid[IW_ESSID_MAX_SIZE + 1];
589 u8 ssid_len;
590
591 /* These are network statistics */
592 struct ieee80211_rx_stats stats;
593 u16 capability;
594 u8 rates[MAX_RATES_LENGTH];
595 u8 rates_len;
596 u8 rates_ex[MAX_RATES_EX_LENGTH];
597 u8 rates_ex_len;
598 unsigned long last_scanned;
599 u8 mode;
600 u8 flags;
601 u32 last_associate;
602 u32 time_stamp[2];
603 u16 beacon_interval;
604 u16 listen_interval;
605 u16 atim_window;
606 u8 wpa_ie[MAX_WPA_IE_LEN];
607 size_t wpa_ie_len;
608 u8 rsn_ie[MAX_WPA_IE_LEN];
609 size_t rsn_ie_len;
610 struct list_head list;
611};
612
613enum ieee80211_state {
614 IEEE80211_UNINITIALIZED = 0,
615 IEEE80211_INITIALIZED,
616 IEEE80211_ASSOCIATING,
617 IEEE80211_ASSOCIATED,
618 IEEE80211_AUTHENTICATING,
619 IEEE80211_AUTHENTICATED,
620 IEEE80211_SHUTDOWN
621};
622
623#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
624#define DEFAULT_FTS 2346
625#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
626#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
627
628
629#define CFG_IEEE80211_RESERVE_FCS (1<<0)
630#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
631
632struct ieee80211_device {
633 struct net_device *dev;
634
635 /* Bookkeeping structures */
636 struct net_device_stats stats;
637 struct ieee80211_stats ieee_stats;
638
639 /* Probe / Beacon management */
640 struct list_head network_free_list;
641 struct list_head network_list;
642 struct ieee80211_network *networks;
643 int scans;
644 int scan_age;
645
646 int iw_mode; /* operating mode (IW_MODE_*) */
647
648 spinlock_t lock;
649
650 int tx_headroom; /* Set to size of any additional room needed at front
651 * of allocated Tx SKBs */
652 u32 config;
653
654 /* WEP and other encryption related settings at the device level */
655 int open_wep; /* Set to 1 to allow unencrypted frames */
656
657 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
658 * WEP key changes */
659
660 /* If the host performs {en,de}cryption, then set to 1 */
661 int host_encrypt;
662 int host_decrypt;
663 int ieee802_1x; /* is IEEE 802.1X used */
664
665 /* WPA data */
666 int wpa_enabled;
667 int drop_unencrypted;
668 int tkip_countermeasures;
669 int privacy_invoked;
670 size_t wpa_ie_len;
671 u8 *wpa_ie;
672
673 struct list_head crypt_deinit_list;
674 struct ieee80211_crypt_data *crypt[WEP_KEYS];
675 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
676 struct timer_list crypt_deinit_timer;
677
678 int bcrx_sta_key; /* use individual keys to override default keys even
679 * with RX of broad/multicast frames */
680
681 /* Fragmentation structures */
682 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
683 unsigned int frag_next_idx;
684 u16 fts; /* Fragmentation Threshold */
685
686 /* Association info */
687 u8 bssid[ETH_ALEN];
688
689 enum ieee80211_state state;
690
691 int mode; /* A, B, G */
692 int modulation; /* CCK, OFDM */
693 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
694 int abg_ture; /* ABG flag */
695
696 /* Callback functions */
697 void (*set_security)(struct net_device *dev,
698 struct ieee80211_security *sec);
699 int (*hard_start_xmit)(struct ieee80211_txb *txb,
700 struct net_device *dev);
701 int (*reset_port)(struct net_device *dev);
702
703 /* This must be the last item so that it points to the data
704 * allocated beyond this structure by alloc_ieee80211 */
705 u8 priv[0];
706};
707
708#define IEEE_A (1<<0)
709#define IEEE_B (1<<1)
710#define IEEE_G (1<<2)
711#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
712
713extern inline void *ieee80211_priv(struct net_device *dev)
714{
715 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
716}
717
718extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
719{
720 /* Single white space is for Linksys APs */
721 if (essid_len == 1 && essid[0] == ' ')
722 return 1;
723
724 /* Otherwise, if the entire essid is 0, we assume it is hidden */
725 while (essid_len) {
726 essid_len--;
727 if (essid[essid_len] != '\0')
728 return 0;
729 }
730
731 return 1;
732}
733
734extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
735{
736 /*
737 * It is possible for both access points and our device to support
738 * combinations of modes, so as long as there is one valid combination
739 * of ap/device supported modes, then return success
740 *
741 */
742 if ((mode & IEEE_A) &&
743 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
744 (ieee->freq_band & IEEE80211_52GHZ_BAND))
745 return 1;
746
747 if ((mode & IEEE_G) &&
748 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
749 (ieee->freq_band & IEEE80211_24GHZ_BAND))
750 return 1;
751
752 if ((mode & IEEE_B) &&
753 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
754 (ieee->freq_band & IEEE80211_24GHZ_BAND))
755 return 1;
756
757 return 0;
758}
759
760extern inline int ieee80211_get_hdrlen(u16 fc)
761{
762 int hdrlen = IEEE80211_3ADDR_LEN;
763
764 switch (WLAN_FC_GET_TYPE(fc)) {
765 case IEEE80211_FTYPE_DATA:
766 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
767 hdrlen = IEEE80211_4ADDR_LEN;
768 break;
769 case IEEE80211_FTYPE_CTL:
770 switch (WLAN_FC_GET_STYPE(fc)) {
771 case IEEE80211_STYPE_CTS:
772 case IEEE80211_STYPE_ACK:
773 hdrlen = IEEE80211_1ADDR_LEN;
774 break;
775 default:
776 hdrlen = IEEE80211_2ADDR_LEN;
777 break;
778 }
779 break;
780 }
781
782 return hdrlen;
783}
784
785
786
787/* ieee80211.c */
788extern void free_ieee80211(struct net_device *dev);
789extern struct net_device *alloc_ieee80211(int sizeof_priv);
790
791extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
792
793/* ieee80211_tx.c */
794
795
796extern int ieee80211_xmit(struct sk_buff *skb,
797 struct net_device *dev);
798extern void ieee80211_txb_free(struct ieee80211_txb *);
799
800
801/* ieee80211_rx.c */
802extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
803 struct ieee80211_rx_stats *rx_stats);
804extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
805 struct ieee80211_hdr *header,
806 struct ieee80211_rx_stats *stats);
807
808/* iee80211_wx.c */
809extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
810 struct iw_request_info *info,
811 union iwreq_data *wrqu, char *key);
812extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
813 struct iw_request_info *info,
814 union iwreq_data *wrqu, char *key);
815extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
816 struct iw_request_info *info,
817 union iwreq_data *wrqu, char *key);
818
819
820extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
821{
822 ieee->scans++;
823}
824
825extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
826{
827 return ieee->scans;
828}
829
830static inline const char *escape_essid(const char *essid, u8 essid_len) {
831 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
832 const char *s = essid;
833 char *d = escaped;
834
835 if (ieee80211_is_empty_essid(essid, essid_len)) {
836 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
837 return escaped;
838 }
839
840 essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
841 while (essid_len--) {
842 if (*s == '\0') {
843 *d++ = '\\';
844 *d++ = '0';
845 s++;
846 } else {
847 *d++ = *s++;
848 }
849 }
850 *d = '\0';
851 return escaped;
852}
853
854#endif /* IEEE80211_H */