drivers/net/wireless/ipw2x00/ieee80211.h

   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, ieee80211_geo APIs,
  24  *          various structure changes, and crypto API init method
  25  */
  26 #ifndef IEEE80211_H
  27 #define IEEE80211_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
  35 #define IEEE80211_VERSION "git-1.1.13"
  36
  37 #define IEEE80211_DATA_LEN              2304
  38 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  39    6.2.1.1.2.
  40
  41    The figure in section 7.1.2 suggests a body size of up to 2312
  42    bytes is allowed, which is a bit confusing, I suspect this
  43    represents the 2304 bytes of real data, plus a possible 8 bytes of
  44    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  45
  46 #define IEEE80211_1ADDR_LEN 10
  47 #define IEEE80211_2ADDR_LEN 16
  48 #define IEEE80211_3ADDR_LEN 24
  49 #define IEEE80211_4ADDR_LEN 30
  50 #define IEEE80211_FCS_LEN    4
  51 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
  52 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
  53
  54 #define MIN_FRAG_THRESHOLD     256U
  55 #define MAX_FRAG_THRESHOLD     2346U
  56
  57 /* QOS control */
  58 #define IEEE80211_QCTL_TID              0x000F
  59
  60 /* debug macros */
  61
  62 #ifdef CONFIG_LIBIPW_DEBUG
  63 extern u32 ieee80211_debug_level;
  64 #define IEEE80211_DEBUG(level, fmt, args...) \
  65 do { if (ieee80211_debug_level & (level)) \
  66   printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
  67          in_interrupt() ? 'I' : 'U', __func__ , ## args); } while (0)
  68 static inline bool ieee80211_ratelimit_debug(u32 level)
  69 {
  70         return (ieee80211_debug_level & level) && net_ratelimit();
  71 }
  72 #else
  73 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
  74 static inline bool ieee80211_ratelimit_debug(u32 level)
  75 {
  76         return false;
  77 }
  78 #endif                          /* CONFIG_LIBIPW_DEBUG */
  79
  80 /*
  81  * To use the debug system:
  82  *
  83  * If you are defining a new debug classification, simply add it to the #define
  84  * list here in the form of:
  85  *
  86  * #define IEEE80211_DL_xxxx VALUE
  87  *
  88  * shifting value to the left one bit from the previous entry.  xxxx should be
  89  * the name of the classification (for example, WEP)
  90  *
  91  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
  92  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
  93  * to send output to that classification.
  94  *
  95  * To add your debug level to the list of levels seen when you perform
  96  *
  97  * % cat /proc/net/ieee80211/debug_level
  98  *
  99  * you simply need to add your entry to the ieee80211_debug_level array.
 100  *
 101  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 102  * CONFIG_LIBIPW_DEBUG defined in your kernel configuration
 103  *
 104  */
 105
 106 #define IEEE80211_DL_INFO          (1<<0)
 107 #define IEEE80211_DL_WX            (1<<1)
 108 #define IEEE80211_DL_SCAN          (1<<2)
 109 #define IEEE80211_DL_STATE         (1<<3)
 110 #define IEEE80211_DL_MGMT          (1<<4)
 111 #define IEEE80211_DL_FRAG          (1<<5)
 112 #define IEEE80211_DL_DROP          (1<<7)
 113
 114 #define IEEE80211_DL_TX            (1<<8)
 115 #define IEEE80211_DL_RX            (1<<9)
 116 #define IEEE80211_DL_QOS           (1<<31)
 117
 118 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 119 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 120 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 121
 122 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 123 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 124 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 125 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 126 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 127 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 128 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 129 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 130 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 131 #include <linux/netdevice.h>
 132 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 133
 134 #ifndef WIRELESS_SPY
 135 #define WIRELESS_SPY            /* enable iwspy support */
 136 #endif
 137 #include <net/iw_handler.h>     /* new driver API */
 138
 139 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 140
 141 #ifndef ETH_P_80211_RAW
 142 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 143 #endif
 144
 145 /* IEEE 802.11 defines */
 146
 147 #define P80211_OUI_LEN 3
 148
 149 struct ieee80211_snap_hdr {
 150
 151         u8 dsap;                /* always 0xAA */
 152         u8 ssap;                /* always 0xAA */
 153         u8 ctrl;                /* always 0x03 */
 154         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 155
 156 } __attribute__ ((packed));
 157
 158 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 159
 160 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 161 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 162 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 163
 164 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 165 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 166
 167 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 168 #define IEEE80211_STATMASK_RSSI (1<<1)
 169 #define IEEE80211_STATMASK_NOISE (1<<2)
 170 #define IEEE80211_STATMASK_RATE (1<<3)
 171 #define IEEE80211_STATMASK_WEMASK 0x7
 172
 173 #define IEEE80211_CCK_MODULATION    (1<<0)
 174 #define IEEE80211_OFDM_MODULATION   (1<<1)
 175
 176 #define IEEE80211_24GHZ_BAND     (1<<0)
 177 #define IEEE80211_52GHZ_BAND     (1<<1)
 178
 179 #define IEEE80211_CCK_RATE_1MB                  0x02
 180 #define IEEE80211_CCK_RATE_2MB                  0x04
 181 #define IEEE80211_CCK_RATE_5MB                  0x0B
 182 #define IEEE80211_CCK_RATE_11MB                 0x16
 183 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 184 #define IEEE80211_OFDM_RATE_9MB                 0x12
 185 #define IEEE80211_OFDM_RATE_12MB                0x18
 186 #define IEEE80211_OFDM_RATE_18MB                0x24
 187 #define IEEE80211_OFDM_RATE_24MB                0x30
 188 #define IEEE80211_OFDM_RATE_36MB                0x48
 189 #define IEEE80211_OFDM_RATE_48MB                0x60
 190 #define IEEE80211_OFDM_RATE_54MB                0x6C
 191 #define IEEE80211_BASIC_RATE_MASK               0x80
 192
 193 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 194 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 195 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 196 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 197 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 198 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 199 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 200 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 201 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 202 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 203 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 204 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 205
 206 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 207 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 208         IEEE80211_CCK_RATE_2MB_MASK)
 209 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 210         IEEE80211_CCK_RATE_5MB_MASK | \
 211         IEEE80211_CCK_RATE_11MB_MASK)
 212
 213 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 214 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 215         IEEE80211_OFDM_RATE_12MB_MASK | \
 216         IEEE80211_OFDM_RATE_24MB_MASK)
 217 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 218         IEEE80211_OFDM_RATE_9MB_MASK  | \
 219         IEEE80211_OFDM_RATE_18MB_MASK | \
 220         IEEE80211_OFDM_RATE_36MB_MASK | \
 221         IEEE80211_OFDM_RATE_48MB_MASK | \
 222         IEEE80211_OFDM_RATE_54MB_MASK)
 223 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 224                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 225
 226 #define IEEE80211_NUM_OFDM_RATES            8
 227 #define IEEE80211_NUM_CCK_RATES             4
 228 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 229
 230 /* NOTE: This data is for statistical purposes; not all hardware provides this
 231  *       information for frames received.
 232  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 233  */
 234 struct ieee80211_rx_stats {
 235         u32 mac_time;
 236         s8 rssi;
 237         u8 signal;
 238         u8 noise;
 239         u16 rate;               /* in 100 kbps */
 240         u8 received_channel;
 241         u8 control;
 242         u8 mask;
 243         u8 freq;
 244         u16 len;
 245         u64 tsf;
 246         u32 beacon_time;
 247 };
 248
 249 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 250  * three fragmented frames. This define can be increased to support more
 251  * concurrent frames, but it should be noted that each entry can consume about
 252  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 253 #define IEEE80211_FRAG_CACHE_LEN 4
 254
 255 struct ieee80211_frag_entry {
 256         unsigned long first_frag_time;
 257         unsigned int seq;
 258         unsigned int last_frag;
 259         struct sk_buff *skb;
 260         u8 src_addr[ETH_ALEN];
 261         u8 dst_addr[ETH_ALEN];
 262 };
 263
 264 struct ieee80211_stats {
 265         unsigned int tx_unicast_frames;
 266         unsigned int tx_multicast_frames;
 267         unsigned int tx_fragments;
 268         unsigned int tx_unicast_octets;
 269         unsigned int tx_multicast_octets;
 270         unsigned int tx_deferred_transmissions;
 271         unsigned int tx_single_retry_frames;
 272         unsigned int tx_multiple_retry_frames;
 273         unsigned int tx_retry_limit_exceeded;
 274         unsigned int tx_discards;
 275         unsigned int rx_unicast_frames;
 276         unsigned int rx_multicast_frames;
 277         unsigned int rx_fragments;
 278         unsigned int rx_unicast_octets;
 279         unsigned int rx_multicast_octets;
 280         unsigned int rx_fcs_errors;
 281         unsigned int rx_discards_no_buffer;
 282         unsigned int tx_discards_wrong_sa;
 283         unsigned int rx_discards_undecryptable;
 284         unsigned int rx_message_in_msg_fragments;
 285         unsigned int rx_message_in_bad_msg_fragments;
 286 };
 287
 288 struct ieee80211_device;
 289
 290 #define SEC_KEY_1               (1<<0)
 291 #define SEC_KEY_2               (1<<1)
 292 #define SEC_KEY_3               (1<<2)
 293 #define SEC_KEY_4               (1<<3)
 294 #define SEC_ACTIVE_KEY          (1<<4)
 295 #define SEC_AUTH_MODE           (1<<5)
 296 #define SEC_UNICAST_GROUP       (1<<6)
 297 #define SEC_LEVEL               (1<<7)
 298 #define SEC_ENABLED             (1<<8)
 299 #define SEC_ENCRYPT             (1<<9)
 300
 301 #define SEC_LEVEL_0             0       /* None */
 302 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 303 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 304 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 305 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 306
 307 #define SEC_ALG_NONE            0
 308 #define SEC_ALG_WEP             1
 309 #define SEC_ALG_TKIP            2
 310 #define SEC_ALG_CCMP            3
 311
 312 #define WEP_KEYS                4
 313 #define WEP_KEY_LEN             13
 314 #define SCM_KEY_LEN             32
 315 #define SCM_TEMPORAL_KEY_LENGTH 16
 316
 317 struct ieee80211_security {
 318         u16 active_key:2, enabled:1, unicast_uses_group:1, encrypt:1;
 319         u8 auth_mode;
 320         u8 encode_alg[WEP_KEYS];
 321         u8 key_sizes[WEP_KEYS];
 322         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 323         u8 level;
 324         u16 flags;
 325 } __attribute__ ((packed));
 326
 327 /*
 328
 329  802.11 data frame from AP
 330
 331       ,-------------------------------------------------------------------.
 332 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 333       |------|------|---------|---------|---------|------|---------|------|
 334 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 335       |      | tion | (BSSID) |         |         | ence |  data   |      |
 336       `-------------------------------------------------------------------'
 337
 338 Total: 28-2340 bytes
 339
 340 */
 341
 342 #define BEACON_PROBE_SSID_ID_POSITION 12
 343
 344 struct ieee80211_hdr_1addr {
 345         __le16 frame_ctl;
 346         __le16 duration_id;
 347         u8 addr1[ETH_ALEN];
 348         u8 payload[0];
 349 } __attribute__ ((packed));
 350
 351 struct ieee80211_hdr_2addr {
 352         __le16 frame_ctl;
 353         __le16 duration_id;
 354         u8 addr1[ETH_ALEN];
 355         u8 addr2[ETH_ALEN];
 356         u8 payload[0];
 357 } __attribute__ ((packed));
 358
 359 struct ieee80211_hdr_3addr {
 360         __le16 frame_ctl;
 361         __le16 duration_id;
 362         u8 addr1[ETH_ALEN];
 363         u8 addr2[ETH_ALEN];
 364         u8 addr3[ETH_ALEN];
 365         __le16 seq_ctl;
 366         u8 payload[0];
 367 } __attribute__ ((packed));
 368
 369 struct ieee80211_hdr_4addr {
 370         __le16 frame_ctl;
 371         __le16 duration_id;
 372         u8 addr1[ETH_ALEN];
 373         u8 addr2[ETH_ALEN];
 374         u8 addr3[ETH_ALEN];
 375         __le16 seq_ctl;
 376         u8 addr4[ETH_ALEN];
 377         u8 payload[0];
 378 } __attribute__ ((packed));
 379
 380 struct ieee80211_hdr_3addrqos {
 381         __le16 frame_ctl;
 382         __le16 duration_id;
 383         u8 addr1[ETH_ALEN];
 384         u8 addr2[ETH_ALEN];
 385         u8 addr3[ETH_ALEN];
 386         __le16 seq_ctl;
 387         u8 payload[0];
 388         __le16 qos_ctl;
 389 } __attribute__ ((packed));
 390
 391 struct ieee80211_info_element {
 392         u8 id;
 393         u8 len;
 394         u8 data[0];
 395 } __attribute__ ((packed));
 396
 397 /*
 398  * These are the data types that can make up management packets
 399  *
 400         u16 auth_algorithm;
 401         u16 auth_sequence;
 402         u16 beacon_interval;
 403         u16 capability;
 404         u8 current_ap[ETH_ALEN];
 405         u16 listen_interval;
 406         struct {
 407                 u16 association_id:14, reserved:2;
 408         } __attribute__ ((packed));
 409         u32 time_stamp[2];
 410         u16 reason;
 411         u16 status;
 412 */
 413
 414 struct ieee80211_auth {
 415         struct ieee80211_hdr_3addr header;
 416         __le16 algorithm;
 417         __le16 transaction;
 418         __le16 status;
 419         /* challenge */
 420         struct ieee80211_info_element info_element[0];
 421 } __attribute__ ((packed));
 422
 423 struct ieee80211_channel_switch {
 424         u8 id;
 425         u8 len;
 426         u8 mode;
 427         u8 channel;
 428         u8 count;
 429 } __attribute__ ((packed));
 430
 431 struct ieee80211_action {
 432         struct ieee80211_hdr_3addr header;
 433         u8 category;
 434         u8 action;
 435         union {
 436                 struct ieee80211_action_exchange {
 437                         u8 token;
 438                         struct ieee80211_info_element info_element[0];
 439                 } exchange;
 440                 struct ieee80211_channel_switch channel_switch;
 441
 442         } format;
 443 } __attribute__ ((packed));
 444
 445 struct ieee80211_disassoc {
 446         struct ieee80211_hdr_3addr header;
 447         __le16 reason;
 448 } __attribute__ ((packed));
 449
 450 /* Alias deauth for disassoc */
 451 #define ieee80211_deauth ieee80211_disassoc
 452
 453 struct ieee80211_probe_request {
 454         struct ieee80211_hdr_3addr header;
 455         /* SSID, supported rates */
 456         struct ieee80211_info_element info_element[0];
 457 } __attribute__ ((packed));
 458
 459 struct ieee80211_probe_response {
 460         struct ieee80211_hdr_3addr header;
 461         __le32 time_stamp[2];
 462         __le16 beacon_interval;
 463         __le16 capability;
 464         /* SSID, supported rates, FH params, DS params,
 465          * CF params, IBSS params, TIM (if beacon), RSN */
 466         struct ieee80211_info_element info_element[0];
 467 } __attribute__ ((packed));
 468
 469 /* Alias beacon for probe_response */
 470 #define ieee80211_beacon ieee80211_probe_response
 471
 472 struct ieee80211_assoc_request {
 473         struct ieee80211_hdr_3addr header;
 474         __le16 capability;
 475         __le16 listen_interval;
 476         /* SSID, supported rates, RSN */
 477         struct ieee80211_info_element info_element[0];
 478 } __attribute__ ((packed));
 479
 480 struct ieee80211_reassoc_request {
 481         struct ieee80211_hdr_3addr header;
 482         __le16 capability;
 483         __le16 listen_interval;
 484         u8 current_ap[ETH_ALEN];
 485         struct ieee80211_info_element info_element[0];
 486 } __attribute__ ((packed));
 487
 488 struct ieee80211_assoc_response {
 489         struct ieee80211_hdr_3addr header;
 490         __le16 capability;
 491         __le16 status;
 492         __le16 aid;
 493         /* supported rates */
 494         struct ieee80211_info_element info_element[0];
 495 } __attribute__ ((packed));
 496
 497 struct ieee80211_txb {
 498         u8 nr_frags;
 499         u8 encrypted;
 500         u8 rts_included;
 501         u8 reserved;
 502         u16 frag_size;
 503         u16 payload_size;
 504         struct sk_buff *fragments[0];
 505 };
 506
 507 /* SWEEP TABLE ENTRIES NUMBER */
 508 #define MAX_SWEEP_TAB_ENTRIES             42
 509 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 510 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 511  * only use 8, and then use extended rates for the remaining supported
 512  * rates.  Other APs, however, stick all of their supported rates on the
 513  * main rates information element... */
 514 #define MAX_RATES_LENGTH                  ((u8)12)
 515 #define MAX_RATES_EX_LENGTH               ((u8)16)
 516 #define MAX_NETWORK_COUNT                  128
 517
 518 #define CRC_LENGTH                 4U
 519
 520 #define MAX_WPA_IE_LEN 64
 521
 522 #define NETWORK_HAS_OFDM       (1<<1)
 523 #define NETWORK_HAS_CCK        (1<<2)
 524
 525 /* QoS structure */
 526 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 527 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 528 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 529                                          NETWORK_HAS_QOS_INFORMATION)
 530
 531 /* 802.11h */
 532 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 533 #define NETWORK_HAS_CSA                 (1<<6)
 534 #define NETWORK_HAS_QUIET               (1<<7)
 535 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 536 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 537
 538 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 539
 540 #define QOS_QUEUE_NUM                   4
 541 #define QOS_OUI_LEN                     3
 542 #define QOS_OUI_TYPE                    2
 543 #define QOS_ELEMENT_ID                  221
 544 #define QOS_OUI_INFO_SUB_TYPE           0
 545 #define QOS_OUI_PARAM_SUB_TYPE          1
 546 #define QOS_VERSION_1                   1
 547 #define QOS_AIFSN_MIN_VALUE             2
 548
 549 struct ieee80211_qos_information_element {
 550         u8 elementID;
 551         u8 length;
 552         u8 qui[QOS_OUI_LEN];
 553         u8 qui_type;
 554         u8 qui_subtype;
 555         u8 version;
 556         u8 ac_info;
 557 } __attribute__ ((packed));
 558
 559 struct ieee80211_qos_ac_parameter {
 560         u8 aci_aifsn;
 561         u8 ecw_min_max;
 562         __le16 tx_op_limit;
 563 } __attribute__ ((packed));
 564
 565 struct ieee80211_qos_parameter_info {
 566         struct ieee80211_qos_information_element info_element;
 567         u8 reserved;
 568         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 569 } __attribute__ ((packed));
 570
 571 struct ieee80211_qos_parameters {
 572         __le16 cw_min[QOS_QUEUE_NUM];
 573         __le16 cw_max[QOS_QUEUE_NUM];
 574         u8 aifs[QOS_QUEUE_NUM];
 575         u8 flag[QOS_QUEUE_NUM];
 576         __le16 tx_op_limit[QOS_QUEUE_NUM];
 577 } __attribute__ ((packed));
 578
 579 struct ieee80211_qos_data {
 580         struct ieee80211_qos_parameters parameters;
 581         int active;
 582         int supported;
 583         u8 param_count;
 584         u8 old_param_count;
 585 };
 586
 587 struct ieee80211_tim_parameters {
 588         u8 tim_count;
 589         u8 tim_period;
 590 } __attribute__ ((packed));
 591
 592 /*******************************************************/
 593
 594 enum {                          /* ieee80211_basic_report.map */
 595         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 596         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 597         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 598         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 599         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 600         /* Bits 5-7 are reserved */
 601
 602 };
 603 struct ieee80211_basic_report {
 604         u8 channel;
 605         __le64 start_time;
 606         __le16 duration;
 607         u8 map;
 608 } __attribute__ ((packed));
 609
 610 enum {                          /* ieee80211_measurement_request.mode */
 611         /* Bit 0 is reserved */
 612         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 613         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 614         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 615         /* Bits 4-7 are reserved */
 616 };
 617
 618 enum {
 619         IEEE80211_REPORT_BASIC = 0,     /* required */
 620         IEEE80211_REPORT_CCA = 1,       /* optional */
 621         IEEE80211_REPORT_RPI = 2,       /* optional */
 622         /* 3-255 reserved */
 623 };
 624
 625 struct ieee80211_measurement_params {
 626         u8 channel;
 627         __le64 start_time;
 628         __le16 duration;
 629 } __attribute__ ((packed));
 630
 631 struct ieee80211_measurement_request {
 632         struct ieee80211_info_element ie;
 633         u8 token;
 634         u8 mode;
 635         u8 type;
 636         struct ieee80211_measurement_params params[0];
 637 } __attribute__ ((packed));
 638
 639 struct ieee80211_measurement_report {
 640         struct ieee80211_info_element ie;
 641         u8 token;
 642         u8 mode;
 643         u8 type;
 644         union {
 645                 struct ieee80211_basic_report basic[0];
 646         } u;
 647 } __attribute__ ((packed));
 648
 649 struct ieee80211_tpc_report {
 650         u8 transmit_power;
 651         u8 link_margin;
 652 } __attribute__ ((packed));
 653
 654 struct ieee80211_channel_map {
 655         u8 channel;
 656         u8 map;
 657 } __attribute__ ((packed));
 658
 659 struct ieee80211_ibss_dfs {
 660         struct ieee80211_info_element ie;
 661         u8 owner[ETH_ALEN];
 662         u8 recovery_interval;
 663         struct ieee80211_channel_map channel_map[0];
 664 };
 665
 666 struct ieee80211_csa {
 667         u8 mode;
 668         u8 channel;
 669         u8 count;
 670 } __attribute__ ((packed));
 671
 672 struct ieee80211_quiet {
 673         u8 count;
 674         u8 period;
 675         u8 duration;
 676         u8 offset;
 677 } __attribute__ ((packed));
 678
 679 struct ieee80211_network {
 680         /* These entries are used to identify a unique network */
 681         u8 bssid[ETH_ALEN];
 682         u8 channel;
 683         /* Ensure null-terminated for any debug msgs */
 684         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 685         u8 ssid_len;
 686
 687         struct ieee80211_qos_data qos_data;
 688
 689         /* These are network statistics */
 690         struct ieee80211_rx_stats stats;
 691         u16 capability;
 692         u8 rates[MAX_RATES_LENGTH];
 693         u8 rates_len;
 694         u8 rates_ex[MAX_RATES_EX_LENGTH];
 695         u8 rates_ex_len;
 696         unsigned long last_scanned;
 697         u8 mode;
 698         u32 flags;
 699         u32 last_associate;
 700         u32 time_stamp[2];
 701         u16 beacon_interval;
 702         u16 listen_interval;
 703         u16 atim_window;
 704         u8 erp_value;
 705         u8 wpa_ie[MAX_WPA_IE_LEN];
 706         size_t wpa_ie_len;
 707         u8 rsn_ie[MAX_WPA_IE_LEN];
 708         size_t rsn_ie_len;
 709         struct ieee80211_tim_parameters tim;
 710
 711         /* 802.11h info */
 712
 713         /* Power Constraint - mandatory if spctrm mgmt required */
 714         u8 power_constraint;
 715
 716         /* TPC Report - mandatory if spctrm mgmt required */
 717         struct ieee80211_tpc_report tpc_report;
 718
 719         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 720          * NOTE: This is variable length and so must be allocated dynamically */
 721         struct ieee80211_ibss_dfs *ibss_dfs;
 722
 723         /* Channel Switch Announcement - optional if spctrm mgmt required */
 724         struct ieee80211_csa csa;
 725
 726         /* Quiet - optional if spctrm mgmt required */
 727         struct ieee80211_quiet quiet;
 728
 729         struct list_head list;
 730 };
 731
 732 enum ieee80211_state {
 733         IEEE80211_UNINITIALIZED = 0,
 734         IEEE80211_INITIALIZED,
 735         IEEE80211_ASSOCIATING,
 736         IEEE80211_ASSOCIATED,
 737         IEEE80211_AUTHENTICATING,
 738         IEEE80211_AUTHENTICATED,
 739         IEEE80211_SHUTDOWN
 740 };
 741
 742 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 743 #define DEFAULT_FTS 2346
 744
 745 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 746 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 747 #define CFG_IEEE80211_RTS (1<<2)
 748
 749 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 750 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 751 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 752                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 753
 754 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 755 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 756 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 757                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 758
 759 enum {
 760         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 761         IEEE80211_CH_80211H_RULES = (1 << 1),
 762         IEEE80211_CH_B_ONLY = (1 << 2),
 763         IEEE80211_CH_NO_IBSS = (1 << 3),
 764         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 765         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 766         IEEE80211_CH_INVALID = (1 << 6),
 767 };
 768
 769 struct ieee80211_channel {
 770         u32 freq;       /* in MHz */
 771         u8 channel;
 772         u8 flags;
 773         u8 max_power;   /* in dBm */
 774 };
 775
 776 struct ieee80211_geo {
 777         u8 name[4];
 778         u8 bg_channels;
 779         u8 a_channels;
 780         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
 781         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
 782 };
 783
 784 struct ieee80211_device {
 785         struct net_device *dev;
 786         struct ieee80211_security sec;
 787
 788         /* Bookkeeping structures */
 789         struct ieee80211_stats ieee_stats;
 790
 791         struct ieee80211_geo geo;
 792
 793         /* Probe / Beacon management */
 794         struct list_head network_free_list;
 795         struct list_head network_list;
 796         struct ieee80211_network *networks;
 797         int scans;
 798         int scan_age;
 799
 800         int iw_mode;            /* operating mode (IW_MODE_*) */
 801         struct iw_spy_data spy_data;    /* iwspy support */
 802
 803         spinlock_t lock;
 804
 805         int tx_headroom;        /* Set to size of any additional room needed at front
 806                                  * of allocated Tx SKBs */
 807         u32 config;
 808
 809         /* WEP and other encryption related settings at the device level */
 810         int open_wep;           /* Set to 1 to allow unencrypted frames */
 811
 812         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
 813                                  * WEP key changes */
 814
 815         /* If the host performs {en,de}cryption, then set to 1 */
 816         int host_encrypt;
 817         int host_encrypt_msdu;
 818         int host_decrypt;
 819         /* host performs multicast decryption */
 820         int host_mc_decrypt;
 821
 822         /* host should strip IV and ICV from protected frames */
 823         /* meaningful only when hardware decryption is being used */
 824         int host_strip_iv_icv;
 825
 826         int host_open_frag;
 827         int host_build_iv;
 828         int ieee802_1x;         /* is IEEE 802.1X used */
 829
 830         /* WPA data */
 831         int wpa_enabled;
 832         int drop_unencrypted;
 833         int privacy_invoked;
 834         size_t wpa_ie_len;
 835         u8 *wpa_ie;
 836
 837         struct lib80211_crypt_info crypt_info;
 838
 839         int bcrx_sta_key;       /* use individual keys to override default keys even
 840                                  * with RX of broad/multicast frames */
 841
 842         /* Fragmentation structures */
 843         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
 844         unsigned int frag_next_idx;
 845         u16 fts;                /* Fragmentation Threshold */
 846         u16 rts;                /* RTS threshold */
 847
 848         /* Association info */
 849         u8 bssid[ETH_ALEN];
 850
 851         enum ieee80211_state state;
 852
 853         int mode;               /* A, B, G */
 854         int modulation;         /* CCK, OFDM */
 855         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
 856         int abg_true;           /* ABG flag              */
 857
 858         int perfect_rssi;
 859         int worst_rssi;
 860
 861         u16 prev_seq_ctl;       /* used to drop duplicate frames */
 862
 863         /* Callback functions */
 864         void (*set_security) (struct net_device * dev,
 865                               struct ieee80211_security * sec);
 866         int (*hard_start_xmit) (struct ieee80211_txb * txb,
 867                                 struct net_device * dev, int pri);
 868         int (*reset_port) (struct net_device * dev);
 869         int (*is_queue_full) (struct net_device * dev, int pri);
 870
 871         int (*handle_management) (struct net_device * dev,
 872                                   struct ieee80211_network * network, u16 type);
 873         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
 874
 875         /* Typical STA methods */
 876         int (*handle_auth) (struct net_device * dev,
 877                             struct ieee80211_auth * auth);
 878         int (*handle_deauth) (struct net_device * dev,
 879                               struct ieee80211_deauth * auth);
 880         int (*handle_action) (struct net_device * dev,
 881                               struct ieee80211_action * action,
 882                               struct ieee80211_rx_stats * stats);
 883         int (*handle_disassoc) (struct net_device * dev,
 884                                 struct ieee80211_disassoc * assoc);
 885         int (*handle_beacon) (struct net_device * dev,
 886                               struct ieee80211_beacon * beacon,
 887                               struct ieee80211_network * network);
 888         int (*handle_probe_response) (struct net_device * dev,
 889                                       struct ieee80211_probe_response * resp,
 890                                       struct ieee80211_network * network);
 891         int (*handle_probe_request) (struct net_device * dev,
 892                                      struct ieee80211_probe_request * req,
 893                                      struct ieee80211_rx_stats * stats);
 894         int (*handle_assoc_response) (struct net_device * dev,
 895                                       struct ieee80211_assoc_response * resp,
 896                                       struct ieee80211_network * network);
 897
 898         /* Typical AP methods */
 899         int (*handle_assoc_request) (struct net_device * dev);
 900         int (*handle_reassoc_request) (struct net_device * dev,
 901                                        struct ieee80211_reassoc_request * req);
 902
 903         /* This must be the last item so that it points to the data
 904          * allocated beyond this structure by alloc_ieee80211 */
 905         u8 priv[0];
 906 };
 907
 908 #define IEEE_A            (1<<0)
 909 #define IEEE_B            (1<<1)
 910 #define IEEE_G            (1<<2)
 911 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
 912
 913 static inline void *ieee80211_priv(struct net_device *dev)
 914 {
 915         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
 916 }
 917
 918 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
 919                                           int mode)
 920 {
 921         /*
 922          * It is possible for both access points and our device to support
 923          * combinations of modes, so as long as there is one valid combination
 924          * of ap/device supported modes, then return success
 925          *
 926          */
 927         if ((mode & IEEE_A) &&
 928             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
 929             (ieee->freq_band & IEEE80211_52GHZ_BAND))
 930                 return 1;
 931
 932         if ((mode & IEEE_G) &&
 933             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
 934             (ieee->freq_band & IEEE80211_24GHZ_BAND))
 935                 return 1;
 936
 937         if ((mode & IEEE_B) &&
 938             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
 939             (ieee->freq_band & IEEE80211_24GHZ_BAND))
 940                 return 1;
 941
 942         return 0;
 943 }
 944
 945 static inline int ieee80211_get_hdrlen(u16 fc)
 946 {
 947         int hdrlen = IEEE80211_3ADDR_LEN;
 948         u16 stype = WLAN_FC_GET_STYPE(fc);
 949
 950         switch (WLAN_FC_GET_TYPE(fc)) {
 951         case IEEE80211_FTYPE_DATA:
 952                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
 953                         hdrlen = IEEE80211_4ADDR_LEN;
 954                 if (stype & IEEE80211_STYPE_QOS_DATA)
 955                         hdrlen += 2;
 956                 break;
 957         case IEEE80211_FTYPE_CTL:
 958                 switch (WLAN_FC_GET_STYPE(fc)) {
 959                 case IEEE80211_STYPE_CTS:
 960                 case IEEE80211_STYPE_ACK:
 961                         hdrlen = IEEE80211_1ADDR_LEN;
 962                         break;
 963                 default:
 964                         hdrlen = IEEE80211_2ADDR_LEN;
 965                         break;
 966                 }
 967                 break;
 968         }
 969
 970         return hdrlen;
 971 }
 972
 973 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
 974 {
 975         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control))) {
 976         case IEEE80211_1ADDR_LEN:
 977                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
 978         case IEEE80211_2ADDR_LEN:
 979                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
 980         case IEEE80211_3ADDR_LEN:
 981                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
 982         case IEEE80211_4ADDR_LEN:
 983                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
 984         }
 985         return NULL;
 986 }
 987
 988 static inline int ieee80211_is_ofdm_rate(u8 rate)
 989 {
 990         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
 991         case IEEE80211_OFDM_RATE_6MB:
 992         case IEEE80211_OFDM_RATE_9MB:
 993         case IEEE80211_OFDM_RATE_12MB:
 994         case IEEE80211_OFDM_RATE_18MB:
 995         case IEEE80211_OFDM_RATE_24MB:
 996         case IEEE80211_OFDM_RATE_36MB:
 997         case IEEE80211_OFDM_RATE_48MB:
 998         case IEEE80211_OFDM_RATE_54MB:
 999                 return 1;
1000         }
1001         return 0;
1002 }
1003
1004 static inline int ieee80211_is_cck_rate(u8 rate)
1005 {
1006         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1007         case IEEE80211_CCK_RATE_1MB:
1008         case IEEE80211_CCK_RATE_2MB:
1009         case IEEE80211_CCK_RATE_5MB:
1010         case IEEE80211_CCK_RATE_11MB:
1011                 return 1;
1012         }
1013         return 0;
1014 }
1015
1016 /* ieee80211.c */
1017 extern void free_ieee80211(struct net_device *dev);
1018 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1019 extern int ieee80211_change_mtu(struct net_device *dev, int new_mtu);
1020
1021 extern void ieee80211_networks_age(struct ieee80211_device *ieee,
1022                                    unsigned long age_secs);
1023
1024 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1025
1026 /* ieee80211_tx.c */
1027 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1028 extern void ieee80211_txb_free(struct ieee80211_txb *);
1029
1030 /* ieee80211_rx.c */
1031 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1032                      struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1033 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1034                         struct ieee80211_rx_stats *rx_stats);
1035 /* make sure to set stats->len */
1036 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1037                              struct ieee80211_hdr_4addr *header,
1038                              struct ieee80211_rx_stats *stats);
1039 extern void ieee80211_network_reset(struct ieee80211_network *network);
1040
1041 /* ieee80211_geo.c */
1042 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1043                                                      *ieee);
1044 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1045                              const struct ieee80211_geo *geo);
1046
1047 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1048                                       u8 channel);
1049 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1050                                       u8 channel);
1051 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1052 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1053                                       u8 channel);
1054 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1055                                                              ieee80211_device
1056                                                              *ieee, u8 channel);
1057 extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1058                                       u8 channel);
1059
1060 /* ieee80211_wx.c */
1061 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1062                                  struct iw_request_info *info,
1063                                  union iwreq_data *wrqu, char *key);
1064 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1065                                    struct iw_request_info *info,
1066                                    union iwreq_data *wrqu, char *key);
1067 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1068                                    struct iw_request_info *info,
1069                                    union iwreq_data *wrqu, char *key);
1070 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1071                                       struct iw_request_info *info,
1072                                       union iwreq_data *wrqu, char *extra);
1073 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1074                                       struct iw_request_info *info,
1075                                       union iwreq_data *wrqu, char *extra);
1076
1077 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1078 {
1079         ieee->scans++;
1080 }
1081
1082 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1083 {
1084         return ieee->scans;
1085 }
1086
1087 #endif                          /* IEEE80211_H */