projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[NET] ieee80211 subsystem
[deliverable/linux.git] / include / net / ieee80211.h
CommitLineData
b453872c
JG		 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#include <linux/if_ether.h> /* ETH_ALEN */
24#include <linux/kernel.h> /* ARRAY_SIZE */
25
26#if WIRELESS_EXT < 17
27#define IW_QUAL_QUAL_INVALID 0x10
28#define IW_QUAL_LEVEL_INVALID 0x20
29#define IW_QUAL_NOISE_INVALID 0x40
30#define IW_QUAL_QUAL_UPDATED 0x1
31#define IW_QUAL_LEVEL_UPDATED 0x2
32#define IW_QUAL_NOISE_UPDATED 0x4
33#endif
34
35#define IEEE80211_DATA_LEN 2304
36/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
37 6.2.1.1.2.
38
39 The figure in section 7.1.2 suggests a body size of up to 2312
40 bytes is allowed, which is a bit confusing, I suspect this
41 represents the 2304 bytes of real data, plus a possible 8 bytes of
42 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
43
44
45#define IEEE80211_HLEN 30
46#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
47
48struct ieee80211_hdr {
49 u16 frame_ctl;
50 u16 duration_id;
51 u8 addr1[ETH_ALEN];
52 u8 addr2[ETH_ALEN];
53 u8 addr3[ETH_ALEN];
54 u16 seq_ctl;
55 u8 addr4[ETH_ALEN];
56} __attribute__ ((packed));
57
58struct ieee80211_hdr_3addr {
59 u16 frame_ctl;
60 u16 duration_id;
61 u8 addr1[ETH_ALEN];
62 u8 addr2[ETH_ALEN];
63 u8 addr3[ETH_ALEN];
64 u16 seq_ctl;
65} __attribute__ ((packed));
66
67enum eap_type {
68 EAP_PACKET = 0,
69 EAPOL_START,
70 EAPOL_LOGOFF,
71 EAPOL_KEY,
72 EAPOL_ENCAP_ASF_ALERT
73};
74
75static const char *eap_types[] = {
76 [EAP_PACKET] = "EAP-Packet",
77 [EAPOL_START] = "EAPOL-Start",
78 [EAPOL_LOGOFF] = "EAPOL-Logoff",
79 [EAPOL_KEY] = "EAPOL-Key",
80 [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
81};
82
83static inline const char *eap_get_type(int type)
84{
85 return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
86}
87
88struct eapol {
89 u8 snap[6];
90 u16 ethertype;
91 u8 version;
92 u8 type;
93 u16 length;
94} __attribute__ ((packed));
95
96#define IEEE80211_3ADDR_LEN 24
97#define IEEE80211_4ADDR_LEN 30
98#define IEEE80211_FCS_LEN 4
99
100#define MIN_FRAG_THRESHOLD 256U
101#define MAX_FRAG_THRESHOLD 2346U
102
103/* Frame control field constants */
104#define IEEE80211_FCTL_VERS 0x0002
105#define IEEE80211_FCTL_FTYPE 0x000c
106#define IEEE80211_FCTL_STYPE 0x00f0
107#define IEEE80211_FCTL_TODS 0x0100
108#define IEEE80211_FCTL_FROMDS 0x0200
109#define IEEE80211_FCTL_MOREFRAGS 0x0400
110#define IEEE80211_FCTL_RETRY 0x0800
111#define IEEE80211_FCTL_PM 0x1000
112#define IEEE80211_FCTL_MOREDATA 0x2000
113#define IEEE80211_FCTL_WEP 0x4000
114#define IEEE80211_FCTL_ORDER 0x8000
115
116#define IEEE80211_FTYPE_MGMT 0x0000
117#define IEEE80211_FTYPE_CTL 0x0004
118#define IEEE80211_FTYPE_DATA 0x0008
119
120/* management */
121#define IEEE80211_STYPE_ASSOC_REQ 0x0000
122#define IEEE80211_STYPE_ASSOC_RESP 0x0010
123#define IEEE80211_STYPE_REASSOC_REQ 0x0020
124#define IEEE80211_STYPE_REASSOC_RESP 0x0030
125#define IEEE80211_STYPE_PROBE_REQ 0x0040
126#define IEEE80211_STYPE_PROBE_RESP 0x0050
127#define IEEE80211_STYPE_BEACON 0x0080
128#define IEEE80211_STYPE_ATIM 0x0090
129#define IEEE80211_STYPE_DISASSOC 0x00A0
130#define IEEE80211_STYPE_AUTH 0x00B0
131#define IEEE80211_STYPE_DEAUTH 0x00C0
132
133/* control */
134#define IEEE80211_STYPE_PSPOLL 0x00A0
135#define IEEE80211_STYPE_RTS 0x00B0
136#define IEEE80211_STYPE_CTS 0x00C0
137#define IEEE80211_STYPE_ACK 0x00D0
138#define IEEE80211_STYPE_CFEND 0x00E0
139#define IEEE80211_STYPE_CFENDACK 0x00F0
140
141/* data */
142#define IEEE80211_STYPE_DATA 0x0000
143#define IEEE80211_STYPE_DATA_CFACK 0x0010
144#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
145#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
146#define IEEE80211_STYPE_NULLFUNC 0x0040
147#define IEEE80211_STYPE_CFACK 0x0050
148#define IEEE80211_STYPE_CFPOLL 0x0060
149#define IEEE80211_STYPE_CFACKPOLL 0x0070
150
151#define IEEE80211_SCTL_FRAG 0x000F
152#define IEEE80211_SCTL_SEQ 0xFFF0
153
154
155/* debug macros */
156
157#ifdef CONFIG_IEEE80211_DEBUG
158extern u32 ieee80211_debug_level;
159#define IEEE80211_DEBUG(level, fmt, args...) \
160do { if (ieee80211_debug_level & (level)) \
161 printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
162 in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
163#else
164#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
165#endif /* CONFIG_IEEE80211_DEBUG */
166
167/*
168 * To use the debug system;
169 *
170 * If you are defining a new debug classification, simply add it to the #define
171 * list here in the form of:
172 *
173 * #define IEEE80211_DL_xxxx VALUE
174 *
175 * shifting value to the left one bit from the previous entry. xxxx should be
176 * the name of the classification (for example, WEP)
177 *
178 * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
179 * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
180 * to send output to that classification.
181 *
182 * To add your debug level to the list of levels seen when you perform
183 *
184 * % cat /proc/net/ipw/debug_level
185 *
186 * you simply need to add your entry to the ipw_debug_levels array.
187 *
188 * If you do not see debug_level in /proc/net/ipw then you do not have
189 * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
190 *
191 */
192
193#define IEEE80211_DL_INFO (1<<0)
194#define IEEE80211_DL_WX (1<<1)
195#define IEEE80211_DL_SCAN (1<<2)
196#define IEEE80211_DL_STATE (1<<3)
197#define IEEE80211_DL_MGMT (1<<4)
198#define IEEE80211_DL_FRAG (1<<5)
199#define IEEE80211_DL_EAP (1<<6)
200#define IEEE80211_DL_DROP (1<<7)
201
202#define IEEE80211_DL_TX (1<<8)
203#define IEEE80211_DL_RX (1<<9)
204
205#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
206#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
207#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
208
209#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
210#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
211#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
212#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
213#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
214#define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
215#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
216#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
217#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
218#include <linux/netdevice.h>
219#include <linux/wireless.h>
220#include <linux/if_arp.h> /* ARPHRD_ETHER */
221
222#ifndef WIRELESS_SPY
223#define WIRELESS_SPY // enable iwspy support
224#endif
225#include <net/iw_handler.h> // new driver API
226
227#ifndef ETH_P_PAE
228#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
229#endif /* ETH_P_PAE */
230
231#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
232
233#ifndef ETH_P_80211_RAW
234#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
235#endif
236
237/* IEEE 802.11 defines */
238
239#define P80211_OUI_LEN 3
240
241struct ieee80211_snap_hdr {
242
243 u8 dsap; /* always 0xAA */
244 u8 ssap; /* always 0xAA */
245 u8 ctrl; /* always 0x03 */
246 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
247
248} __attribute__ ((packed));
249
250#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
251
252#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
253#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
254
255#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
256#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
257
258/* Authentication algorithms */
259#define WLAN_AUTH_OPEN 0
260#define WLAN_AUTH_SHARED_KEY 1
261
262#define WLAN_AUTH_CHALLENGE_LEN 128
263
264#define WLAN_CAPABILITY_BSS (1<<0)
265#define WLAN_CAPABILITY_IBSS (1<<1)
266#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
267#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
268#define WLAN_CAPABILITY_PRIVACY (1<<4)
269#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
270#define WLAN_CAPABILITY_PBCC (1<<6)
271#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
272
273/* Status codes */
274#define WLAN_STATUS_SUCCESS 0
275#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
276#define WLAN_STATUS_CAPS_UNSUPPORTED 10
277#define WLAN_STATUS_REASSOC_NO_ASSOC 11
278#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
279#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
280#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
281#define WLAN_STATUS_CHALLENGE_FAIL 15
282#define WLAN_STATUS_AUTH_TIMEOUT 16
283#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
284#define WLAN_STATUS_ASSOC_DENIED_RATES 18
285/* 802.11b */
286#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
287#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
288#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
289
290/* Reason codes */
291#define WLAN_REASON_UNSPECIFIED 1
292#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
293#define WLAN_REASON_DEAUTH_LEAVING 3
294#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
295#define WLAN_REASON_DISASSOC_AP_BUSY 5
296#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
297#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
298#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
299#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
300
301
302/* Information Element IDs */
303#define WLAN_EID_SSID 0
304#define WLAN_EID_SUPP_RATES 1
305#define WLAN_EID_FH_PARAMS 2
306#define WLAN_EID_DS_PARAMS 3
307#define WLAN_EID_CF_PARAMS 4
308#define WLAN_EID_TIM 5
309#define WLAN_EID_IBSS_PARAMS 6
310#define WLAN_EID_CHALLENGE 16
311#define WLAN_EID_RSN 48
312#define WLAN_EID_GENERIC 221
313
314#define IEEE80211_MGMT_HDR_LEN 24
315#define IEEE80211_DATA_HDR3_LEN 24
316#define IEEE80211_DATA_HDR4_LEN 30
317
318
319#define IEEE80211_STATMASK_SIGNAL (1<<0)
320#define IEEE80211_STATMASK_RSSI (1<<1)
321#define IEEE80211_STATMASK_NOISE (1<<2)
322#define IEEE80211_STATMASK_RATE (1<<3)
323#define IEEE80211_STATMASK_WEMASK 0x7
324
325
326#define IEEE80211_CCK_MODULATION (1<<0)
327#define IEEE80211_OFDM_MODULATION (1<<1)
328
329#define IEEE80211_24GHZ_BAND (1<<0)
330#define IEEE80211_52GHZ_BAND (1<<1)
331
332#define IEEE80211_CCK_RATE_1MB 0x02
333#define IEEE80211_CCK_RATE_2MB 0x04
334#define IEEE80211_CCK_RATE_5MB 0x0B
335#define IEEE80211_CCK_RATE_11MB 0x16
336#define IEEE80211_OFDM_RATE_6MB 0x0C
337#define IEEE80211_OFDM_RATE_9MB 0x12
338#define IEEE80211_OFDM_RATE_12MB 0x18
339#define IEEE80211_OFDM_RATE_18MB 0x24
340#define IEEE80211_OFDM_RATE_24MB 0x30
341#define IEEE80211_OFDM_RATE_36MB 0x48
342#define IEEE80211_OFDM_RATE_48MB 0x60
343#define IEEE80211_OFDM_RATE_54MB 0x6C
344#define IEEE80211_BASIC_RATE_MASK 0x80
345
346#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
347#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
348#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
349#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
350#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
351#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
352#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
353#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
354#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
355#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
356#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
357#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
358
359#define IEEE80211_CCK_RATES_MASK 0x0000000F
360#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
361 IEEE80211_CCK_RATE_2MB_MASK)
362#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
363 IEEE80211_CCK_RATE_5MB_MASK | \
364 IEEE80211_CCK_RATE_11MB_MASK)
365
366#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
367#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
368 IEEE80211_OFDM_RATE_12MB_MASK | \
369 IEEE80211_OFDM_RATE_24MB_MASK)
370#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
371 IEEE80211_OFDM_RATE_9MB_MASK | \
372 IEEE80211_OFDM_RATE_18MB_MASK | \
373 IEEE80211_OFDM_RATE_36MB_MASK | \
374 IEEE80211_OFDM_RATE_48MB_MASK | \
375 IEEE80211_OFDM_RATE_54MB_MASK)
376#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
377 IEEE80211_CCK_DEFAULT_RATES_MASK)
378
379#define IEEE80211_NUM_OFDM_RATES 8
380#define IEEE80211_NUM_CCK_RATES 4
381#define IEEE80211_OFDM_SHIFT_MASK_A 4
382
383
384
385
386/* NOTE: This data is for statistical purposes; not all hardware provides this
387 * information for frames received. Not setting these will not cause
388 * any adverse affects. */
389struct ieee80211_rx_stats {
390 u32 mac_time;
391 s8 rssi;
392 u8 signal;
393 u8 noise;
394 u16 rate; /* in 100 kbps */
395 u8 received_channel;
396 u8 control;
397 u8 mask;
398 u8 freq;
399 u16 len;
400};
401
402/* IEEE 802.11 requires that STA supports concurrent reception of at least
403 * three fragmented frames. This define can be increased to support more
404 * concurrent frames, but it should be noted that each entry can consume about
405 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
406#define IEEE80211_FRAG_CACHE_LEN 4
407
408struct ieee80211_frag_entry {
409 unsigned long first_frag_time;
410 unsigned int seq;
411 unsigned int last_frag;
412 struct sk_buff *skb;
413 u8 src_addr[ETH_ALEN];
414 u8 dst_addr[ETH_ALEN];
415};
416
417struct ieee80211_stats {
418 unsigned int tx_unicast_frames;
419 unsigned int tx_multicast_frames;
420 unsigned int tx_fragments;
421 unsigned int tx_unicast_octets;
422 unsigned int tx_multicast_octets;
423 unsigned int tx_deferred_transmissions;
424 unsigned int tx_single_retry_frames;
425 unsigned int tx_multiple_retry_frames;
426 unsigned int tx_retry_limit_exceeded;
427 unsigned int tx_discards;
428 unsigned int rx_unicast_frames;
429 unsigned int rx_multicast_frames;
430 unsigned int rx_fragments;
431 unsigned int rx_unicast_octets;
432 unsigned int rx_multicast_octets;
433 unsigned int rx_fcs_errors;
434 unsigned int rx_discards_no_buffer;
435 unsigned int tx_discards_wrong_sa;
436 unsigned int rx_discards_undecryptable;
437 unsigned int rx_message_in_msg_fragments;
438 unsigned int rx_message_in_bad_msg_fragments;
439};
440
441struct ieee80211_device;
442
443#include "ieee80211_crypt.h"
444
445#define SEC_KEY_1 (1<<0)
446#define SEC_KEY_2 (1<<1)
447#define SEC_KEY_3 (1<<2)
448#define SEC_KEY_4 (1<<3)
449#define SEC_ACTIVE_KEY (1<<4)
450#define SEC_AUTH_MODE (1<<5)
451#define SEC_UNICAST_GROUP (1<<6)
452#define SEC_LEVEL (1<<7)
453#define SEC_ENABLED (1<<8)
454
455#define SEC_LEVEL_0 0 /* None */
456#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
457#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
458#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
459#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
460
461#define WEP_KEYS 4
462#define WEP_KEY_LEN 13
463
464struct ieee80211_security {
465 u16 active_key:2,
466 enabled:1,
467 auth_mode:2,
468 auth_algo:4,
469 unicast_uses_group:1;
470 u8 key_sizes[WEP_KEYS];
471 u8 keys[WEP_KEYS][WEP_KEY_LEN];
472 u8 level;
473 u16 flags;
474} __attribute__ ((packed));
475
476
477/*
478
479 802.11 data frame from AP
480
481 ,-------------------------------------------------------------------.
482Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
483 |------|------|---------|---------|---------|------|---------|------|
484Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
485 | | tion | (BSSID) | | | ence | data | |
486 `-------------------------------------------------------------------'
487
488Total: 28-2340 bytes
489
490*/
491
492struct ieee80211_header_data {
493 u16 frame_ctl;
494 u16 duration_id;
495 u8 addr1[6];
496 u8 addr2[6];
497 u8 addr3[6];
498 u16 seq_ctrl;
499};
500
501#define BEACON_PROBE_SSID_ID_POSITION 12
502
503/* Management Frame Information Element Types */
504#define MFIE_TYPE_SSID 0
505#define MFIE_TYPE_RATES 1
506#define MFIE_TYPE_FH_SET 2
507#define MFIE_TYPE_DS_SET 3
508#define MFIE_TYPE_CF_SET 4
509#define MFIE_TYPE_TIM 5
510#define MFIE_TYPE_IBSS_SET 6
511#define MFIE_TYPE_CHALLENGE 16
512#define MFIE_TYPE_RSN 48
513#define MFIE_TYPE_RATES_EX 50
514#define MFIE_TYPE_GENERIC 221
515
516struct ieee80211_info_element_hdr {
517 u8 id;
518 u8 len;
519} __attribute__ ((packed));
520
521struct ieee80211_info_element {
522 u8 id;
523 u8 len;
524 u8 data[0];
525} __attribute__ ((packed));
526
527/*
528 * These are the data types that can make up management packets
529 *
530 u16 auth_algorithm;
531 u16 auth_sequence;
532 u16 beacon_interval;
533 u16 capability;
534 u8 current_ap[ETH_ALEN];
535 u16 listen_interval;
536 struct {
537 u16 association_id:14, reserved:2;
538 } __attribute__ ((packed));
539 u32 time_stamp[2];
540 u16 reason;
541 u16 status;
542*/
543
544struct ieee80211_authentication {
545 struct ieee80211_header_data header;
546 u16 algorithm;
547 u16 transaction;
548 u16 status;
549 struct ieee80211_info_element info_element;
550} __attribute__ ((packed));
551
552
553struct ieee80211_probe_response {
554 struct ieee80211_header_data header;
555 u32 time_stamp[2];
556 u16 beacon_interval;
557 u16 capability;
558 struct ieee80211_info_element info_element;
559} __attribute__ ((packed));
560
561struct ieee80211_assoc_request_frame {
562 u16 capability;
563 u16 listen_interval;
564 u8 current_ap[ETH_ALEN];
565 struct ieee80211_info_element info_element;
566} __attribute__ ((packed));
567
568struct ieee80211_assoc_response_frame {
569 struct ieee80211_hdr_3addr header;
570 u16 capability;
571 u16 status;
572 u16 aid;
573 struct ieee80211_info_element info_element; /* supported rates */
574} __attribute__ ((packed));
575
576
577struct ieee80211_txb {
578 u8 nr_frags;
579 u8 encrypted;
580 u16 reserved;
581 u16 frag_size;
582 u16 payload_size;
583 struct sk_buff *fragments[0];
584};
585
586
587/* SWEEP TABLE ENTRIES NUMBER*/
588#define MAX_SWEEP_TAB_ENTRIES 42
589#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
590/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
591 * only use 8, and then use extended rates for the remaining supported
592 * rates. Other APs, however, stick all of their supported rates on the
593 * main rates information element... */
594#define MAX_RATES_LENGTH ((u8)12)
595#define MAX_RATES_EX_LENGTH ((u8)16)
596#define MAX_NETWORK_COUNT 128
597
598#define CRC_LENGTH 4U
599
600#define MAX_WPA_IE_LEN 64
601
602#define NETWORK_EMPTY_ESSID (1<<0)
603#define NETWORK_HAS_OFDM (1<<1)
604#define NETWORK_HAS_CCK (1<<2)
605
606struct ieee80211_network {
607 /* These entries are used to identify a unique network */
608 u8 bssid[ETH_ALEN];
609 u8 channel;
610 /* Ensure null-terminated for any debug msgs */
611 u8 ssid[IW_ESSID_MAX_SIZE + 1];
612 u8 ssid_len;
613
614 /* These are network statistics */
615 struct ieee80211_rx_stats stats;
616 u16 capability;
617 u8 rates[MAX_RATES_LENGTH];
618 u8 rates_len;
619 u8 rates_ex[MAX_RATES_EX_LENGTH];
620 u8 rates_ex_len;
621 unsigned long last_scanned;
622 u8 mode;
623 u8 flags;
624 u32 last_associate;
625 u32 time_stamp[2];
626 u16 beacon_interval;
627 u16 listen_interval;
628 u16 atim_window;
629 u8 wpa_ie[MAX_WPA_IE_LEN];
630 size_t wpa_ie_len;
631 u8 rsn_ie[MAX_WPA_IE_LEN];
632 size_t rsn_ie_len;
633 struct list_head list;
634};
635
636enum ieee80211_state {
637 IEEE80211_UNINITIALIZED = 0,
638 IEEE80211_INITIALIZED,
639 IEEE80211_ASSOCIATING,
640 IEEE80211_ASSOCIATED,
641 IEEE80211_AUTHENTICATING,
642 IEEE80211_AUTHENTICATED,
643 IEEE80211_SHUTDOWN
644};
645
646#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
647#define DEFAULT_FTS 2346
648#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
649#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
650
651
652extern inline int is_multicast_ether_addr(const u8 *addr)
653{
654 return ((addr[0] != 0xff) && (0x01 & addr[0]));
655}
656
657extern inline int is_broadcast_ether_addr(const u8 *addr)
658{
659 return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) && \
660 (addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
661}
662
663#define CFG_IEEE80211_RESERVE_FCS (1<<0)
664#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
665
666struct ieee80211_device {
667 struct net_device *dev;
668
669 /* Bookkeeping structures */
670 struct net_device_stats stats;
671 struct ieee80211_stats ieee_stats;
672
673 /* Probe / Beacon management */
674 struct list_head network_free_list;
675 struct list_head network_list;
676 struct ieee80211_network *networks;
677 int scans;
678 int scan_age;
679
680 int iw_mode; /* operating mode (IW_MODE_*) */
681
682 spinlock_t lock;
683
684 int tx_headroom; /* Set to size of any additional room needed at front
685 * of allocated Tx SKBs */
686 u32 config;
687
688 /* WEP and other encryption related settings at the device level */
689 int open_wep; /* Set to 1 to allow unencrypted frames */
690
691 int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
692 * WEP key changes */
693
694 /* If the host performs {en,de}cryption, then set to 1 */
695 int host_encrypt;
696 int host_decrypt;
697 int ieee802_1x; /* is IEEE 802.1X used */
698
699 /* WPA data */
700 int wpa_enabled;
701 int drop_unencrypted;
702 int tkip_countermeasures;
703 int privacy_invoked;
704 size_t wpa_ie_len;
705 u8 *wpa_ie;
706
707 struct list_head crypt_deinit_list;
708 struct ieee80211_crypt_data *crypt[WEP_KEYS];
709 int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
710 struct timer_list crypt_deinit_timer;
711
712 int bcrx_sta_key; /* use individual keys to override default keys even
713 * with RX of broad/multicast frames */
714
715 /* Fragmentation structures */
716 struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
717 unsigned int frag_next_idx;
718 u16 fts; /* Fragmentation Threshold */
719
720 /* Association info */
721 u8 bssid[ETH_ALEN];
722
723 enum ieee80211_state state;
724
725 int mode; /* A, B, G */
726 int modulation; /* CCK, OFDM */
727 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
728 int abg_ture; /* ABG flag */
729
730 /* Callback functions */
731 void (*set_security)(struct net_device *dev,
732 struct ieee80211_security *sec);
733 int (*hard_start_xmit)(struct ieee80211_txb *txb,
734 struct net_device *dev);
735 int (*reset_port)(struct net_device *dev);
736
737 /* This must be the last item so that it points to the data
738 * allocated beyond this structure by alloc_ieee80211 */
739 u8 priv[0];
740};
741
742#define IEEE_A (1<<0)
743#define IEEE_B (1<<1)
744#define IEEE_G (1<<2)
745#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
746
747extern inline void *ieee80211_priv(struct net_device *dev)
748{
749 return ((struct ieee80211_device *)netdev_priv(dev))->priv;
750}
751
752extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
753{
754 /* Single white space is for Linksys APs */
755 if (essid_len == 1 && essid[0] == ' ')
756 return 1;
757
758 /* Otherwise, if the entire essid is 0, we assume it is hidden */
759 while (essid_len) {
760 essid_len--;
761 if (essid[essid_len] != '\0')
762 return 0;
763 }
764
765 return 1;
766}
767
768extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
769{
770 /*
771 * It is possible for both access points and our device to support
772 * combinations of modes, so as long as there is one valid combination
773 * of ap/device supported modes, then return success
774 *
775 */
776 if ((mode & IEEE_A) &&
777 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
778 (ieee->freq_band & IEEE80211_52GHZ_BAND))
779 return 1;
780
781 if ((mode & IEEE_G) &&
782 (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
783 (ieee->freq_band & IEEE80211_24GHZ_BAND))
784 return 1;
785
786 if ((mode & IEEE_B) &&
787 (ieee->modulation & IEEE80211_CCK_MODULATION) &&
788 (ieee->freq_band & IEEE80211_24GHZ_BAND))
789 return 1;
790
791 return 0;
792}
793
794extern inline int ieee80211_get_hdrlen(u16 fc)
795{
796 int hdrlen = 24;
797
798 switch (WLAN_FC_GET_TYPE(fc)) {
799 case IEEE80211_FTYPE_DATA:
800 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
801 hdrlen = 30; /* Addr4 */
802 break;
803 case IEEE80211_FTYPE_CTL:
804 switch (WLAN_FC_GET_STYPE(fc)) {
805 case IEEE80211_STYPE_CTS:
806 case IEEE80211_STYPE_ACK:
807 hdrlen = 10;
808 break;
809 default:
810 hdrlen = 16;
811 break;
812 }
813 break;
814 }
815
816 return hdrlen;
817}
818
819
820
821/* ieee80211.c */
822extern void free_ieee80211(struct net_device *dev);
823extern struct net_device *alloc_ieee80211(int sizeof_priv);
824
825extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
826
827/* ieee80211_tx.c */
828
829
830extern int ieee80211_xmit(struct sk_buff *skb,
831 struct net_device *dev);
832extern void ieee80211_txb_free(struct ieee80211_txb *);
833
834
835/* ieee80211_rx.c */
836extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
837 struct ieee80211_rx_stats *rx_stats);
838extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
839 struct ieee80211_hdr *header,
840 struct ieee80211_rx_stats *stats);
841
842/* iee80211_wx.c */
843extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
844 struct iw_request_info *info,
845 union iwreq_data *wrqu, char *key);
846extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
847 struct iw_request_info *info,
848 union iwreq_data *wrqu, char *key);
849extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
850 struct iw_request_info *info,
851 union iwreq_data *wrqu, char *key);
852
853
854extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
855{
856 ieee->scans++;
857}
858
859extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
860{
861 return ieee->scans;
862}
863
864static inline const char *escape_essid(const char *essid, u8 essid_len) {
865 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
866 const char *s = essid;
867 char *d = escaped;
868
869 if (ieee80211_is_empty_essid(essid, essid_len)) {
870 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
871 return escaped;
872 }
873
874 essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
875 while (essid_len--) {
876 if (*s == '\0') {
877 *d++ = '\\';
878 *d++ = '0';
879 s++;
880 } else {
881 *d++ = *s++;
882 }
883 }
884 *d = '\0';
885 return escaped;
886}
887#endif /* IEEE80211_H */
Linux kernel - Deliverables
This page took 0.057186 seconds and 5 git commands to generate.