1 /*
2 * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
3 * remains copyright by the original authors
4 *
5 * Portions of the merged code are based on Host AP (software wireless
6 * LAN access point) driver for Intersil Prism2/2.5/3.
7 *
8 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
9 * <j@w1.fi>
10 * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
11 *
12 * Adaption to a generic IEEE 802.11 stack by James Ketrenos
13 * <jketreno@linux.intel.com>
14 * Copyright (c) 2004-2005, Intel Corporation
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation. See README and COPYING for
19 * more details.
20 *
21 * API Version History
22 * 1.0.x -- Initial version
23 * 1.1.x -- Added radiotap, QoS, TIM, libipw_geo APIs,
24 * various structure changes, and crypto API init method
25 */
26 #ifndef LIBIPW_H
27 #define LIBIPW_H
28 #include <linux/if_ether.h> /* ETH_ALEN */
29 #include <linux/kernel.h> /* ARRAY_SIZE */
30 #include <linux/wireless.h>
31 #include <linux/ieee80211.h>
32
33 #include <net/lib80211.h>
34 #include <net/cfg80211.h>
35
36 #define LIBIPW_VERSION "git-1.1.13"
37
38 #define LIBIPW_DATA_LEN 2304
39 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
40 6.2.1.1.2.
41
42 The figure in section 7.1.2 suggests a body size of up to 2312
43 bytes is allowed, which is a bit confusing, I suspect this
44 represents the 2304 bytes of real data, plus a possible 8 bytes of
45 WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
46
47 #define LIBIPW_1ADDR_LEN 10
48 #define LIBIPW_2ADDR_LEN 16
49 #define LIBIPW_3ADDR_LEN 24
50 #define LIBIPW_4ADDR_LEN 30
51 #define LIBIPW_FCS_LEN 4
52 #define LIBIPW_HLEN (LIBIPW_4ADDR_LEN)
53 #define LIBIPW_FRAME_LEN (LIBIPW_DATA_LEN + LIBIPW_HLEN)
54
55 #define MIN_FRAG_THRESHOLD 256U
56 #define MAX_FRAG_THRESHOLD 2346U
57
58 /* QOS control */
59 #define LIBIPW_QCTL_TID 0x000F
60
61 /* debug macros */
62
63 #ifdef CONFIG_LIBIPW_DEBUG
64 extern u32 libipw_debug_level;
65 #define LIBIPW_DEBUG(level, fmt, args...) \
66 do { if (libipw_debug_level & (level)) \
67 printk(KERN_DEBUG "libipw: %c %s " fmt, \
68 in_interrupt() ? 'I' : 'U', __func__ , ## args); } while (0)
69 #else
70 #define LIBIPW_DEBUG(level, fmt, args...) do {} while (0)
71 #endif /* CONFIG_LIBIPW_DEBUG */
72
73 /*
74 * To use the debug system:
75 *
76 * If you are defining a new debug classification, simply add it to the #define
77 * list here in the form of:
78 *
79 * #define LIBIPW_DL_xxxx VALUE
80 *
81 * shifting value to the left one bit from the previous entry. xxxx should be
82 * the name of the classification (for example, WEP)
83 *
84 * You then need to either add a LIBIPW_xxxx_DEBUG() macro definition for your
85 * classification, or use LIBIPW_DEBUG(LIBIPW_DL_xxxx, ...) whenever you want
86 * to send output to that classification.
87 *
88 * To add your debug level to the list of levels seen when you perform
89 *
90 * % cat /proc/net/ieee80211/debug_level
91 *
92 * you simply need to add your entry to the libipw_debug_level array.
93 *
94 * If you do not see debug_level in /proc/net/ieee80211 then you do not have
95 * CONFIG_LIBIPW_DEBUG defined in your kernel configuration
96 *
97 */
98
99 #define LIBIPW_DL_INFO (1<<0)
100 #define LIBIPW_DL_WX (1<<1)
101 #define LIBIPW_DL_SCAN (1<<2)
102 #define LIBIPW_DL_STATE (1<<3)
103 #define LIBIPW_DL_MGMT (1<<4)
104 #define LIBIPW_DL_FRAG (1<<5)
105 #define LIBIPW_DL_DROP (1<<7)
106
107 #define LIBIPW_DL_TX (1<<8)
108 #define LIBIPW_DL_RX (1<<9)
109 #define LIBIPW_DL_QOS (1<<31)
110
111 #define LIBIPW_ERROR(f, a...) printk(KERN_ERR "libipw: " f, ## a)
112 #define LIBIPW_WARNING(f, a...) printk(KERN_WARNING "libipw: " f, ## a)
113 #define LIBIPW_DEBUG_INFO(f, a...) LIBIPW_DEBUG(LIBIPW_DL_INFO, f, ## a)
114
115 #define LIBIPW_DEBUG_WX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_WX, f, ## a)
116 #define LIBIPW_DEBUG_SCAN(f, a...) LIBIPW_DEBUG(LIBIPW_DL_SCAN, f, ## a)
117 #define LIBIPW_DEBUG_STATE(f, a...) LIBIPW_DEBUG(LIBIPW_DL_STATE, f, ## a)
118 #define LIBIPW_DEBUG_MGMT(f, a...) LIBIPW_DEBUG(LIBIPW_DL_MGMT, f, ## a)
119 #define LIBIPW_DEBUG_FRAG(f, a...) LIBIPW_DEBUG(LIBIPW_DL_FRAG, f, ## a)
120 #define LIBIPW_DEBUG_DROP(f, a...) LIBIPW_DEBUG(LIBIPW_DL_DROP, f, ## a)
121 #define LIBIPW_DEBUG_TX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_TX, f, ## a)
122 #define LIBIPW_DEBUG_RX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_RX, f, ## a)
123 #define LIBIPW_DEBUG_QOS(f, a...) LIBIPW_DEBUG(LIBIPW_DL_QOS, f, ## a)
124 #include <linux/netdevice.h>
125 #include <linux/if_arp.h> /* ARPHRD_ETHER */
126
127 #ifndef WIRELESS_SPY
128 #define WIRELESS_SPY /* enable iwspy support */
129 #endif
130 #include <net/iw_handler.h> /* new driver API */
131
132 #define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
133
134 #ifndef ETH_P_80211_RAW
135 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
136 #endif
137
138 /* IEEE 802.11 defines */
139
140 #define P80211_OUI_LEN 3
141
142 struct libipw_snap_hdr {
143
144 u8 dsap; /* always 0xAA */
145 u8 ssap; /* always 0xAA */
146 u8 ctrl; /* always 0x03 */
147 u8 oui[P80211_OUI_LEN]; /* organizational universal id */
148
149 } __packed;
150
151 #define SNAP_SIZE sizeof(struct libipw_snap_hdr)
152
153 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
154 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
155 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
156
157 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
158 #define WLAN_GET_SEQ_SEQ(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
159
160 #define LIBIPW_STATMASK_SIGNAL (1<<0)
161 #define LIBIPW_STATMASK_RSSI (1<<1)
162 #define LIBIPW_STATMASK_NOISE (1<<2)
163 #define LIBIPW_STATMASK_RATE (1<<3)
164 #define LIBIPW_STATMASK_WEMASK 0x7
165
166 #define LIBIPW_CCK_MODULATION (1<<0)
167 #define LIBIPW_OFDM_MODULATION (1<<1)
168
169 #define LIBIPW_24GHZ_BAND (1<<0)
170 #define LIBIPW_52GHZ_BAND (1<<1)
171
172 #define LIBIPW_CCK_RATE_1MB 0x02
173 #define LIBIPW_CCK_RATE_2MB 0x04
174 #define LIBIPW_CCK_RATE_5MB 0x0B
175 #define LIBIPW_CCK_RATE_11MB 0x16
176 #define LIBIPW_OFDM_RATE_6MB 0x0C
177 #define LIBIPW_OFDM_RATE_9MB 0x12
178 #define LIBIPW_OFDM_RATE_12MB 0x18
179 #define LIBIPW_OFDM_RATE_18MB 0x24
180 #define LIBIPW_OFDM_RATE_24MB 0x30
181 #define LIBIPW_OFDM_RATE_36MB 0x48
182 #define LIBIPW_OFDM_RATE_48MB 0x60
183 #define LIBIPW_OFDM_RATE_54MB 0x6C
184 #define LIBIPW_BASIC_RATE_MASK 0x80
185
186 #define LIBIPW_CCK_RATE_1MB_MASK (1<<0)
187 #define LIBIPW_CCK_RATE_2MB_MASK (1<<1)
188 #define LIBIPW_CCK_RATE_5MB_MASK (1<<2)
189 #define LIBIPW_CCK_RATE_11MB_MASK (1<<3)
190 #define LIBIPW_OFDM_RATE_6MB_MASK (1<<4)
191 #define LIBIPW_OFDM_RATE_9MB_MASK (1<<5)
192 #define LIBIPW_OFDM_RATE_12MB_MASK (1<<6)
193 #define LIBIPW_OFDM_RATE_18MB_MASK (1<<7)
194 #define LIBIPW_OFDM_RATE_24MB_MASK (1<<8)
195 #define LIBIPW_OFDM_RATE_36MB_MASK (1<<9)
196 #define LIBIPW_OFDM_RATE_48MB_MASK (1<<10)
197 #define LIBIPW_OFDM_RATE_54MB_MASK (1<<11)
198
199 #define LIBIPW_CCK_RATES_MASK 0x0000000F
200 #define LIBIPW_CCK_BASIC_RATES_MASK (LIBIPW_CCK_RATE_1MB_MASK | \
201 LIBIPW_CCK_RATE_2MB_MASK)
202 #define LIBIPW_CCK_DEFAULT_RATES_MASK (LIBIPW_CCK_BASIC_RATES_MASK | \
203 LIBIPW_CCK_RATE_5MB_MASK | \
204 LIBIPW_CCK_RATE_11MB_MASK)
205
206 #define LIBIPW_OFDM_RATES_MASK 0x00000FF0
207 #define LIBIPW_OFDM_BASIC_RATES_MASK (LIBIPW_OFDM_RATE_6MB_MASK | \
208 LIBIPW_OFDM_RATE_12MB_MASK | \
209 LIBIPW_OFDM_RATE_24MB_MASK)
210 #define LIBIPW_OFDM_DEFAULT_RATES_MASK (LIBIPW_OFDM_BASIC_RATES_MASK | \
211 LIBIPW_OFDM_RATE_9MB_MASK | \
212 LIBIPW_OFDM_RATE_18MB_MASK | \
213 LIBIPW_OFDM_RATE_36MB_MASK | \
214 LIBIPW_OFDM_RATE_48MB_MASK | \
215 LIBIPW_OFDM_RATE_54MB_MASK)
216 #define LIBIPW_DEFAULT_RATES_MASK (LIBIPW_OFDM_DEFAULT_RATES_MASK | \
217 LIBIPW_CCK_DEFAULT_RATES_MASK)
218
219 #define LIBIPW_NUM_OFDM_RATES 8
220 #define LIBIPW_NUM_CCK_RATES 4
221 #define LIBIPW_OFDM_SHIFT_MASK_A 4
222
223 /* NOTE: This data is for statistical purposes; not all hardware provides this
224 * information for frames received.
225 * For libipw_rx_mgt, you need to set at least the 'len' parameter.
226 */
227 struct libipw_rx_stats {
228 u32 mac_time;
229 s8 rssi;
230 u8 signal;
231 u8 noise;
232 u16 rate; /* in 100 kbps */
233 u8 received_channel;
234 u8 control;
235 u8 mask;
236 u8 freq;
237 u16 len;
238 u64 tsf;
239 u32 beacon_time;
240 };
241
242 /* IEEE 802.11 requires that STA supports concurrent reception of at least
243 * three fragmented frames. This define can be increased to support more
244 * concurrent frames, but it should be noted that each entry can consume about
245 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
246 #define LIBIPW_FRAG_CACHE_LEN 4
247
248 struct libipw_frag_entry {
249 unsigned long first_frag_time;
250 unsigned int seq;
251 unsigned int last_frag;
252 struct sk_buff *skb;
253 u8 src_addr[ETH_ALEN];
254 u8 dst_addr[ETH_ALEN];
255 };
256
257 struct libipw_stats {
258 unsigned int tx_unicast_frames;
259 unsigned int tx_multicast_frames;
260 unsigned int tx_fragments;
261 unsigned int tx_unicast_octets;
262 unsigned int tx_multicast_octets;
263 unsigned int tx_deferred_transmissions;
264 unsigned int tx_single_retry_frames;
265 unsigned int tx_multiple_retry_frames;
266 unsigned int tx_retry_limit_exceeded;
267 unsigned int tx_discards;
268 unsigned int rx_unicast_frames;
269 unsigned int rx_multicast_frames;
270 unsigned int rx_fragments;
271 unsigned int rx_unicast_octets;
272 unsigned int rx_multicast_octets;
273 unsigned int rx_fcs_errors;
274 unsigned int rx_discards_no_buffer;
275 unsigned int tx_discards_wrong_sa;
276 unsigned int rx_discards_undecryptable;
277 unsigned int rx_message_in_msg_fragments;
278 unsigned int rx_message_in_bad_msg_fragments;
279 };
280
281 struct libipw_device;
282
283 #define SEC_KEY_1 (1<<0)
284 #define SEC_KEY_2 (1<<1)
285 #define SEC_KEY_3 (1<<2)
286 #define SEC_KEY_4 (1<<3)
287 #define SEC_ACTIVE_KEY (1<<4)
288 #define SEC_AUTH_MODE (1<<5)
289 #define SEC_UNICAST_GROUP (1<<6)
290 #define SEC_LEVEL (1<<7)
291 #define SEC_ENABLED (1<<8)
292 #define SEC_ENCRYPT (1<<9)
293
294 #define SEC_LEVEL_0 0 /* None */
295 #define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
296 #define SEC_LEVEL_2 2 /* Level 1 + TKIP */
297 #define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
298 #define SEC_LEVEL_3 4 /* Level 2 + CCMP */
299
300 #define SEC_ALG_NONE 0
301 #define SEC_ALG_WEP 1
302 #define SEC_ALG_TKIP 2
303 #define SEC_ALG_CCMP 3
304
305 #define WEP_KEYS 4
306 #define WEP_KEY_LEN 13
307 #define SCM_KEY_LEN 32
308 #define SCM_TEMPORAL_KEY_LENGTH 16
309
310 struct libipw_security {
311 u16 active_key:2, enabled:1, unicast_uses_group:1, encrypt:1;
312 u8 auth_mode;
313 u8 encode_alg[WEP_KEYS];
314 u8 key_sizes[WEP_KEYS];
315 u8 keys[WEP_KEYS][SCM_KEY_LEN];
316 u8 level;
317 u16 flags;
318 } __packed;
319
320 /*
321
322 802.11 data frame from AP
323
324 ,-------------------------------------------------------------------.
325 Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
326 |------|------|---------|---------|---------|------|---------|------|
327 Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
328 | | tion | (BSSID) | | | ence | data | |
329 `-------------------------------------------------------------------'
330
331 Total: 28-2340 bytes
332
333 */
334
335 #define BEACON_PROBE_SSID_ID_POSITION 12
336
337 struct libipw_hdr_1addr {
338 __le16 frame_ctl;
339 __le16 duration_id;
340 u8 addr1[ETH_ALEN];
341 u8 payload[0];
342 } __packed;
343
344 struct libipw_hdr_2addr {
345 __le16 frame_ctl;
346 __le16 duration_id;
347 u8 addr1[ETH_ALEN];
348 u8 addr2[ETH_ALEN];
349 u8 payload[0];
350 } __packed;
351
352 struct libipw_hdr_3addr {
353 __le16 frame_ctl;
354 __le16 duration_id;
355 u8 addr1[ETH_ALEN];
356 u8 addr2[ETH_ALEN];
357 u8 addr3[ETH_ALEN];
358 __le16 seq_ctl;
359 u8 payload[0];
360 } __packed;
361
362 struct libipw_hdr_4addr {
363 __le16 frame_ctl;
364 __le16 duration_id;
365 u8 addr1[ETH_ALEN];
366 u8 addr2[ETH_ALEN];
367 u8 addr3[ETH_ALEN];
368 __le16 seq_ctl;
369 u8 addr4[ETH_ALEN];
370 u8 payload[0];
371 } __packed;
372
373 struct libipw_hdr_3addrqos {
374 __le16 frame_ctl;
375 __le16 duration_id;
376 u8 addr1[ETH_ALEN];
377 u8 addr2[ETH_ALEN];
378 u8 addr3[ETH_ALEN];
379 __le16 seq_ctl;
380 u8 payload[0];
381 __le16 qos_ctl;
382 } __packed;
383
384 struct libipw_info_element {
385 u8 id;
386 u8 len;
387 u8 data[0];
388 } __packed;
389
390 /*
391 * These are the data types that can make up management packets
392 *
393 u16 auth_algorithm;
394 u16 auth_sequence;
395 u16 beacon_interval;
396 u16 capability;
397 u8 current_ap[ETH_ALEN];
398 u16 listen_interval;
399 struct {
400 u16 association_id:14, reserved:2;
401 } __packed;
402 u32 time_stamp[2];
403 u16 reason;
404 u16 status;
405 */
406
407 struct libipw_auth {
408 struct libipw_hdr_3addr header;
409 __le16 algorithm;
410 __le16 transaction;
411 __le16 status;
412 /* challenge */
413 struct libipw_info_element info_element[0];
414 } __packed;
415
416 struct libipw_channel_switch {
417 u8 id;
418 u8 len;
419 u8 mode;
420 u8 channel;
421 u8 count;
422 } __packed;
423
424 struct libipw_action {
425 struct libipw_hdr_3addr header;
426 u8 category;
427 u8 action;
428 union {
429 struct libipw_action_exchange {
430 u8 token;
431 struct libipw_info_element info_element[0];
432 } exchange;
433 struct libipw_channel_switch channel_switch;
434
435 } format;
436 } __packed;
437
438 struct libipw_disassoc {
439 struct libipw_hdr_3addr header;
440 __le16 reason;
441 } __packed;
442
443 /* Alias deauth for disassoc */
444 #define libipw_deauth libipw_disassoc
445
446 struct libipw_probe_request {
447 struct libipw_hdr_3addr header;
448 /* SSID, supported rates */
449 struct libipw_info_element info_element[0];
450 } __packed;
451
452 struct libipw_probe_response {
453 struct libipw_hdr_3addr header;
454 __le32 time_stamp[2];
455 __le16 beacon_interval;
456 __le16 capability;
457 /* SSID, supported rates, FH params, DS params,
458 * CF params, IBSS params, TIM (if beacon), RSN */
459 struct libipw_info_element info_element[0];
460 } __packed;
461
462 /* Alias beacon for probe_response */
463 #define libipw_beacon libipw_probe_response
464
465 struct libipw_assoc_request {
466 struct libipw_hdr_3addr header;
467 __le16 capability;
468 __le16 listen_interval;
469 /* SSID, supported rates, RSN */
470 struct libipw_info_element info_element[0];
471 } __packed;
472
473 struct libipw_reassoc_request {
474 struct libipw_hdr_3addr header;
475 __le16 capability;
476 __le16 listen_interval;
477 u8 current_ap[ETH_ALEN];
478 struct libipw_info_element info_element[0];
479 } __packed;
480
481 struct libipw_assoc_response {
482 struct libipw_hdr_3addr header;
483 __le16 capability;
484 __le16 status;
485 __le16 aid;
486 /* supported rates */
487 struct libipw_info_element info_element[0];
488 } __packed;
489
490 struct libipw_txb {
491 u8 nr_frags;
492 u8 encrypted;
493 u8 rts_included;
494 u8 reserved;
495 u16 frag_size;
496 u16 payload_size;
497 struct sk_buff *fragments[0];
498 };
499
500 /* SWEEP TABLE ENTRIES NUMBER */
501 #define MAX_SWEEP_TAB_ENTRIES 42
502 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
503 /* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
504 * only use 8, and then use extended rates for the remaining supported
505 * rates. Other APs, however, stick all of their supported rates on the
506 * main rates information element... */
507 #define MAX_RATES_LENGTH ((u8)12)
508 #define MAX_RATES_EX_LENGTH ((u8)16)
509 #define MAX_NETWORK_COUNT 128
510
511 #define CRC_LENGTH 4U
512
513 #define MAX_WPA_IE_LEN 64
514
515 #define NETWORK_HAS_OFDM (1<<1)
516 #define NETWORK_HAS_CCK (1<<2)
517
518 /* QoS structure */
519 #define NETWORK_HAS_QOS_PARAMETERS (1<<3)
520 #define NETWORK_HAS_QOS_INFORMATION (1<<4)
521 #define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
522 NETWORK_HAS_QOS_INFORMATION)
523
524 /* 802.11h */
525 #define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
526 #define NETWORK_HAS_CSA (1<<6)
527 #define NETWORK_HAS_QUIET (1<<7)
528 #define NETWORK_HAS_IBSS_DFS (1<<8)
529 #define NETWORK_HAS_TPC_REPORT (1<<9)
530
531 #define NETWORK_HAS_ERP_VALUE (1<<10)
532
533 #define QOS_QUEUE_NUM 4
534 #define QOS_OUI_LEN 3
535 #define QOS_OUI_TYPE 2
536 #define QOS_ELEMENT_ID 221
537 #define QOS_OUI_INFO_SUB_TYPE 0
538 #define QOS_OUI_PARAM_SUB_TYPE 1
539 #define QOS_VERSION_1 1
540 #define QOS_AIFSN_MIN_VALUE 2
541
542 struct libipw_qos_information_element {
543 u8 elementID;
544 u8 length;
545 u8 qui[QOS_OUI_LEN];
546 u8 qui_type;
547 u8 qui_subtype;
548 u8 version;
549 u8 ac_info;
550 } __packed;
551
552 struct libipw_qos_ac_parameter {
553 u8 aci_aifsn;
554 u8 ecw_min_max;
555 __le16 tx_op_limit;
556 } __packed;
557
558 struct libipw_qos_parameter_info {
559 struct libipw_qos_information_element info_element;
560 u8 reserved;
561 struct libipw_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
562 } __packed;
563
564 struct libipw_qos_parameters {
565 __le16 cw_min[QOS_QUEUE_NUM];
566 __le16 cw_max[QOS_QUEUE_NUM];
567 u8 aifs[QOS_QUEUE_NUM];
568 u8 flag[QOS_QUEUE_NUM];
569 __le16 tx_op_limit[QOS_QUEUE_NUM];
570 } __packed;
571
572 struct libipw_qos_data {
573 struct libipw_qos_parameters parameters;
574 int active;
575 int supported;
576 u8 param_count;
577 u8 old_param_count;
578 };
579
580 struct libipw_tim_parameters {
581 u8 tim_count;
582 u8 tim_period;
583 } __packed;
584
585 /*******************************************************/
586
587 enum { /* libipw_basic_report.map */
588 LIBIPW_BASIC_MAP_BSS = (1 << 0),
589 LIBIPW_BASIC_MAP_OFDM = (1 << 1),
590 LIBIPW_BASIC_MAP_UNIDENTIFIED = (1 << 2),
591 LIBIPW_BASIC_MAP_RADAR = (1 << 3),
592 LIBIPW_BASIC_MAP_UNMEASURED = (1 << 4),
593 /* Bits 5-7 are reserved */
594
595 };
596 struct libipw_basic_report {
597 u8 channel;
598 __le64 start_time;
599 __le16 duration;
600 u8 map;
601 } __packed;
602
603 enum { /* libipw_measurement_request.mode */
604 /* Bit 0 is reserved */
605 LIBIPW_MEASUREMENT_ENABLE = (1 << 1),
606 LIBIPW_MEASUREMENT_REQUEST = (1 << 2),
607 LIBIPW_MEASUREMENT_REPORT = (1 << 3),
608 /* Bits 4-7 are reserved */
609 };
610
611 enum {
612 LIBIPW_REPORT_BASIC = 0, /* required */
613 LIBIPW_REPORT_CCA = 1, /* optional */
614 LIBIPW_REPORT_RPI = 2, /* optional */
615 /* 3-255 reserved */
616 };
617
618 struct libipw_measurement_params {
619 u8 channel;
620 __le64 start_time;
621 __le16 duration;
622 } __packed;
623
624 struct libipw_measurement_request {
625 struct libipw_info_element ie;
626 u8 token;
627 u8 mode;
628 u8 type;
629 struct libipw_measurement_params params[0];
630 } __packed;
631
632 struct libipw_measurement_report {
633 struct libipw_info_element ie;
634 u8 token;
635 u8 mode;
636 u8 type;
637 union {
638 struct libipw_basic_report basic[0];
639 } u;
640 } __packed;
641
642 struct libipw_tpc_report {
643 u8 transmit_power;
644 u8 link_margin;
645 } __packed;
646
647 struct libipw_channel_map {
648 u8 channel;
649 u8 map;
650 } __packed;
651
652 struct libipw_ibss_dfs {
653 struct libipw_info_element ie;
654 u8 owner[ETH_ALEN];
655 u8 recovery_interval;
656 struct libipw_channel_map channel_map[0];
657 };
658
659 struct libipw_csa {
660 u8 mode;
661 u8 channel;
662 u8 count;
663 } __packed;
664
665 struct libipw_quiet {
666 u8 count;
667 u8 period;
668 u8 duration;
669 u8 offset;
670 } __packed;
671
672 struct libipw_network {
673 /* These entries are used to identify a unique network */
674 u8 bssid[ETH_ALEN];
675 u8 channel;
676 /* Ensure null-terminated for any debug msgs */
677 u8 ssid[IW_ESSID_MAX_SIZE + 1];
678 u8 ssid_len;
679
680 struct libipw_qos_data qos_data;
681
682 /* These are network statistics */
683 struct libipw_rx_stats stats;
684 u16 capability;
685 u8 rates[MAX_RATES_LENGTH];
686 u8 rates_len;
687 u8 rates_ex[MAX_RATES_EX_LENGTH];
688 u8 rates_ex_len;
689 unsigned long last_scanned;
690 u8 mode;
691 u32 flags;
692 u32 last_associate;
693 u32 time_stamp[2];
694 u16 beacon_interval;
695 u16 listen_interval;
696 u16 atim_window;
697 u8 erp_value;
698 u8 wpa_ie[MAX_WPA_IE_LEN];
699 size_t wpa_ie_len;
700 u8 rsn_ie[MAX_WPA_IE_LEN];
701 size_t rsn_ie_len;
702 struct libipw_tim_parameters tim;
703
704 /* 802.11h info */
705
706 /* Power Constraint - mandatory if spctrm mgmt required */
707 u8 power_constraint;
708
709 /* TPC Report - mandatory if spctrm mgmt required */
710 struct libipw_tpc_report tpc_report;
711
712 /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
713 * NOTE: This is variable length and so must be allocated dynamically */
714 struct libipw_ibss_dfs *ibss_dfs;
715
716 /* Channel Switch Announcement - optional if spctrm mgmt required */
717 struct libipw_csa csa;
718
719 /* Quiet - optional if spctrm mgmt required */
720 struct libipw_quiet quiet;
721
722 struct list_head list;
723 };
724
725 enum libipw_state {
726 LIBIPW_UNINITIALIZED = 0,
727 LIBIPW_INITIALIZED,
728 LIBIPW_ASSOCIATING,
729 LIBIPW_ASSOCIATED,
730 LIBIPW_AUTHENTICATING,
731 LIBIPW_AUTHENTICATED,
732 LIBIPW_SHUTDOWN
733 };
734
735 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
736 #define DEFAULT_FTS 2346
737
738 #define CFG_LIBIPW_RESERVE_FCS (1<<0)
739 #define CFG_LIBIPW_COMPUTE_FCS (1<<1)
740 #define CFG_LIBIPW_RTS (1<<2)
741
742 #define LIBIPW_24GHZ_MIN_CHANNEL 1
743 #define LIBIPW_24GHZ_MAX_CHANNEL 14
744 #define LIBIPW_24GHZ_CHANNELS (LIBIPW_24GHZ_MAX_CHANNEL - \
745 LIBIPW_24GHZ_MIN_CHANNEL + 1)
746
747 #define LIBIPW_52GHZ_MIN_CHANNEL 34
748 #define LIBIPW_52GHZ_MAX_CHANNEL 165
749 #define LIBIPW_52GHZ_CHANNELS (LIBIPW_52GHZ_MAX_CHANNEL - \
750 LIBIPW_52GHZ_MIN_CHANNEL + 1)
751
752 enum {
753 LIBIPW_CH_PASSIVE_ONLY = (1 << 0),
754 LIBIPW_CH_80211H_RULES = (1 << 1),
755 LIBIPW_CH_B_ONLY = (1 << 2),
756 LIBIPW_CH_NO_IBSS = (1 << 3),
757 LIBIPW_CH_UNIFORM_SPREADING = (1 << 4),
758 LIBIPW_CH_RADAR_DETECT = (1 << 5),
759 LIBIPW_CH_INVALID = (1 << 6),
760 };
761
762 struct libipw_channel {
763 u32 freq; /* in MHz */
764 u8 channel;
765 u8 flags;
766 u8 max_power; /* in dBm */
767 };
768
769 struct libipw_geo {
770 u8 name[4];
771 u8 bg_channels;
772 u8 a_channels;
773 struct libipw_channel bg[LIBIPW_24GHZ_CHANNELS];
774 struct libipw_channel a[LIBIPW_52GHZ_CHANNELS];
775 };
776
777 struct libipw_device {
778 struct net_device *dev;
779 struct wireless_dev wdev;
780 struct libipw_security sec;
781
782 /* Bookkeeping structures */
783 struct libipw_stats ieee_stats;
784
785 struct libipw_geo geo;
786 struct ieee80211_supported_band bg_band;
787 struct ieee80211_supported_band a_band;
788
789 /* Probe / Beacon management */
790 struct list_head network_free_list;
791 struct list_head network_list;
792 struct libipw_network *networks[MAX_NETWORK_COUNT];
793 int scans;
794 int scan_age;
795
796 int iw_mode; /* operating mode (IW_MODE_*) */
797 struct iw_spy_data spy_data; /* iwspy support */
798
799 spinlock_t lock;
800
801 int tx_headroom; /* Set to size of any additional room needed at front
802 * of allocated Tx SKBs */
803 u32 config;
804
805 /* WEP and other encryption related settings at the device level */
806 int open_wep; /* Set to 1 to allow unencrypted frames */
807
808 /* If the host performs {en,de}cryption, then set to 1 */
809 int host_encrypt;
810 int host_encrypt_msdu;
811 int host_decrypt;
812 /* host performs multicast decryption */
813 int host_mc_decrypt;
814
815 /* host should strip IV and ICV from protected frames */
816 /* meaningful only when hardware decryption is being used */
817 int host_strip_iv_icv;
818
819 int host_open_frag;
820 int ieee802_1x; /* is IEEE 802.1X used */
821
822 /* WPA data */
823 int wpa_enabled;
824 int drop_unencrypted;
825 int privacy_invoked;
826 size_t wpa_ie_len;
827 u8 *wpa_ie;
828
829 struct lib80211_crypt_info crypt_info;
830
831 int bcrx_sta_key; /* use individual keys to override default keys even
832 * with RX of broad/multicast frames */
833
834 /* Fragmentation structures */
835 struct libipw_frag_entry frag_cache[LIBIPW_FRAG_CACHE_LEN];
836 unsigned int frag_next_idx;
837 u16 fts; /* Fragmentation Threshold */
838 u16 rts; /* RTS threshold */
839
840 /* Association info */
841 u8 bssid[ETH_ALEN];
842
843 enum libipw_state state;
844
845 int mode; /* A, B, G */
846 int modulation; /* CCK, OFDM */
847 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
848 int abg_true; /* ABG flag */
849
850 int perfect_rssi;
851 int worst_rssi;
852
853 u16 prev_seq_ctl; /* used to drop duplicate frames */
854
855 /* Callback functions */
856 void (*set_security) (struct net_device * dev,
857 struct libipw_security * sec);
858 netdev_tx_t (*hard_start_xmit) (struct libipw_txb * txb,
859 struct net_device * dev, int pri);
860 int (*is_queue_full) (struct net_device * dev, int pri);
861
862 int (*handle_management) (struct net_device * dev,
863 struct libipw_network * network, u16 type);
864 int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
865
866 /* Typical STA methods */
867 int (*handle_auth) (struct net_device * dev,
868 struct libipw_auth * auth);
869 int (*handle_deauth) (struct net_device * dev,
870 struct libipw_deauth * auth);
871 int (*handle_action) (struct net_device * dev,
872 struct libipw_action * action,
873 struct libipw_rx_stats * stats);
874 int (*handle_disassoc) (struct net_device * dev,
875 struct libipw_disassoc * assoc);
876 int (*handle_beacon) (struct net_device * dev,
877 struct libipw_beacon * beacon,
878 struct libipw_network * network);
879 int (*handle_probe_response) (struct net_device * dev,
880 struct libipw_probe_response * resp,
881 struct libipw_network * network);
882 int (*handle_probe_request) (struct net_device * dev,
883 struct libipw_probe_request * req,
884 struct libipw_rx_stats * stats);
885 int (*handle_assoc_response) (struct net_device * dev,
886 struct libipw_assoc_response * resp,
887 struct libipw_network * network);
888
889 /* Typical AP methods */
890 int (*handle_assoc_request) (struct net_device * dev);
891 int (*handle_reassoc_request) (struct net_device * dev,
892 struct libipw_reassoc_request * req);
893
894 /* This must be the last item so that it points to the data
895 * allocated beyond this structure by alloc_libipw */
896 u8 priv[0];
897 };
898
899 #define IEEE_A (1<<0)
900 #define IEEE_B (1<<1)
901 #define IEEE_G (1<<2)
902 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
903
libipw_priv(struct net_device * dev)904 static inline void *libipw_priv(struct net_device *dev)
905 {
906 return ((struct libipw_device *)netdev_priv(dev))->priv;
907 }
908
libipw_is_valid_mode(struct libipw_device * ieee,int mode)909 static inline int libipw_is_valid_mode(struct libipw_device *ieee,
910 int mode)
911 {
912 /*
913 * It is possible for both access points and our device to support
914 * combinations of modes, so as long as there is one valid combination
915 * of ap/device supported modes, then return success
916 *
917 */
918 if ((mode & IEEE_A) &&
919 (ieee->modulation & LIBIPW_OFDM_MODULATION) &&
920 (ieee->freq_band & LIBIPW_52GHZ_BAND))
921 return 1;
922
923 if ((mode & IEEE_G) &&
924 (ieee->modulation & LIBIPW_OFDM_MODULATION) &&
925 (ieee->freq_band & LIBIPW_24GHZ_BAND))
926 return 1;
927
928 if ((mode & IEEE_B) &&
929 (ieee->modulation & LIBIPW_CCK_MODULATION) &&
930 (ieee->freq_band & LIBIPW_24GHZ_BAND))
931 return 1;
932
933 return 0;
934 }
935
libipw_get_hdrlen(u16 fc)936 static inline int libipw_get_hdrlen(u16 fc)
937 {
938 int hdrlen = LIBIPW_3ADDR_LEN;
939 u16 stype = WLAN_FC_GET_STYPE(fc);
940
941 switch (WLAN_FC_GET_TYPE(fc)) {
942 case IEEE80211_FTYPE_DATA:
943 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
944 hdrlen = LIBIPW_4ADDR_LEN;
945 if (stype & IEEE80211_STYPE_QOS_DATA)
946 hdrlen += 2;
947 break;
948 case IEEE80211_FTYPE_CTL:
949 switch (WLAN_FC_GET_STYPE(fc)) {
950 case IEEE80211_STYPE_CTS:
951 case IEEE80211_STYPE_ACK:
952 hdrlen = LIBIPW_1ADDR_LEN;
953 break;
954 default:
955 hdrlen = LIBIPW_2ADDR_LEN;
956 break;
957 }
958 break;
959 }
960
961 return hdrlen;
962 }
963
libipw_get_payload(struct ieee80211_hdr * hdr)964 static inline u8 *libipw_get_payload(struct ieee80211_hdr *hdr)
965 {
966 switch (libipw_get_hdrlen(le16_to_cpu(hdr->frame_control))) {
967 case LIBIPW_1ADDR_LEN:
968 return ((struct libipw_hdr_1addr *)hdr)->payload;
969 case LIBIPW_2ADDR_LEN:
970 return ((struct libipw_hdr_2addr *)hdr)->payload;
971 case LIBIPW_3ADDR_LEN:
972 return ((struct libipw_hdr_3addr *)hdr)->payload;
973 case LIBIPW_4ADDR_LEN:
974 return ((struct libipw_hdr_4addr *)hdr)->payload;
975 }
976 return NULL;
977 }
978
libipw_is_ofdm_rate(u8 rate)979 static inline int libipw_is_ofdm_rate(u8 rate)
980 {
981 switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
982 case LIBIPW_OFDM_RATE_6MB:
983 case LIBIPW_OFDM_RATE_9MB:
984 case LIBIPW_OFDM_RATE_12MB:
985 case LIBIPW_OFDM_RATE_18MB:
986 case LIBIPW_OFDM_RATE_24MB:
987 case LIBIPW_OFDM_RATE_36MB:
988 case LIBIPW_OFDM_RATE_48MB:
989 case LIBIPW_OFDM_RATE_54MB:
990 return 1;
991 }
992 return 0;
993 }
994
libipw_is_cck_rate(u8 rate)995 static inline int libipw_is_cck_rate(u8 rate)
996 {
997 switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
998 case LIBIPW_CCK_RATE_1MB:
999 case LIBIPW_CCK_RATE_2MB:
1000 case LIBIPW_CCK_RATE_5MB:
1001 case LIBIPW_CCK_RATE_11MB:
1002 return 1;
1003 }
1004 return 0;
1005 }
1006
1007 /* libipw.c */
1008 extern void free_libipw(struct net_device *dev, int monitor);
1009 extern struct net_device *alloc_libipw(int sizeof_priv, int monitor);
1010 extern int libipw_change_mtu(struct net_device *dev, int new_mtu);
1011
1012 extern void libipw_networks_age(struct libipw_device *ieee,
1013 unsigned long age_secs);
1014
1015 extern int libipw_set_encryption(struct libipw_device *ieee);
1016
1017 /* libipw_tx.c */
1018 extern netdev_tx_t libipw_xmit(struct sk_buff *skb,
1019 struct net_device *dev);
1020 extern void libipw_txb_free(struct libipw_txb *);
1021
1022 /* libipw_rx.c */
1023 extern void libipw_rx_any(struct libipw_device *ieee,
1024 struct sk_buff *skb, struct libipw_rx_stats *stats);
1025 extern int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb,
1026 struct libipw_rx_stats *rx_stats);
1027 /* make sure to set stats->len */
1028 extern void libipw_rx_mgt(struct libipw_device *ieee,
1029 struct libipw_hdr_4addr *header,
1030 struct libipw_rx_stats *stats);
1031 extern void libipw_network_reset(struct libipw_network *network);
1032
1033 /* libipw_geo.c */
1034 extern const struct libipw_geo *libipw_get_geo(struct libipw_device
1035 *ieee);
1036 extern int libipw_set_geo(struct libipw_device *ieee,
1037 const struct libipw_geo *geo);
1038
1039 extern int libipw_is_valid_channel(struct libipw_device *ieee,
1040 u8 channel);
1041 extern int libipw_channel_to_index(struct libipw_device *ieee,
1042 u8 channel);
1043 extern u8 libipw_freq_to_channel(struct libipw_device *ieee, u32 freq);
1044 extern u8 libipw_get_channel_flags(struct libipw_device *ieee,
1045 u8 channel);
1046 extern const struct libipw_channel *libipw_get_channel(struct
1047 libipw_device
1048 *ieee, u8 channel);
1049 extern u32 libipw_channel_to_freq(struct libipw_device * ieee,
1050 u8 channel);
1051
1052 /* libipw_wx.c */
1053 extern int libipw_wx_get_scan(struct libipw_device *ieee,
1054 struct iw_request_info *info,
1055 union iwreq_data *wrqu, char *key);
1056 extern int libipw_wx_set_encode(struct libipw_device *ieee,
1057 struct iw_request_info *info,
1058 union iwreq_data *wrqu, char *key);
1059 extern int libipw_wx_get_encode(struct libipw_device *ieee,
1060 struct iw_request_info *info,
1061 union iwreq_data *wrqu, char *key);
1062 extern int libipw_wx_set_encodeext(struct libipw_device *ieee,
1063 struct iw_request_info *info,
1064 union iwreq_data *wrqu, char *extra);
1065 extern int libipw_wx_get_encodeext(struct libipw_device *ieee,
1066 struct iw_request_info *info,
1067 union iwreq_data *wrqu, char *extra);
1068
libipw_increment_scans(struct libipw_device * ieee)1069 static inline void libipw_increment_scans(struct libipw_device *ieee)
1070 {
1071 ieee->scans++;
1072 }
1073
libipw_get_scans(struct libipw_device * ieee)1074 static inline int libipw_get_scans(struct libipw_device *ieee)
1075 {
1076 return ieee->scans;
1077 }
1078
1079 #endif /* LIBIPW_H */
1080