drivers/net/wireless/intel/ipw2x00/libipw.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Merged with mainline ieee80211.h in Aug 2004.  Original ieee802_11
   4  * remains copyright by the original authors
   5  *
   6  * Portions of the merged code are based on Host AP (software wireless
   7  * LAN access point) driver for Intersil Prism2/2.5/3.
   8  *
   9  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
  10  * <j@w1.fi>
  11  * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
  12  *
  13  * Adaption to a generic IEEE 802.11 stack by James Ketrenos
  14  * <jketreno@linux.intel.com>
  15  * Copyright (c) 2004-2005, Intel Corporation
  16  *
  17  * API Version History
  18  * 1.0.x -- Initial version
  19  * 1.1.x -- Added radiotap, QoS, TIM, libipw_geo APIs,
  20  *          various structure changes, and crypto API init method
  21  */
  22 #ifndef LIBIPW_H
  23 #define LIBIPW_H
  24 #include <linux/if_ether.h>     /* ETH_ALEN */
  25 #include <linux/kernel.h>       /* ARRAY_SIZE */
  26 #include <linux/wireless.h>
  27 #include <linux/ieee80211.h>
  28 #include <net/cfg80211.h>
  29
  30 #define LIBIPW_VERSION "git-1.1.13"
  31
  32 #define LIBIPW_DATA_LEN         2304
  33 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  34    6.2.1.1.2.
  35
  36    The figure in section 7.1.2 suggests a body size of up to 2312
  37    bytes is allowed, which is a bit confusing, I suspect this
  38    represents the 2304 bytes of real data, plus a possible 8 bytes of
  39    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  40
  41 #define LIBIPW_1ADDR_LEN 10
  42 #define LIBIPW_2ADDR_LEN 16
  43 #define LIBIPW_3ADDR_LEN 24
  44 #define LIBIPW_4ADDR_LEN 30
  45 #define LIBIPW_FCS_LEN    4
  46 #define LIBIPW_HLEN                     (LIBIPW_4ADDR_LEN)
  47 #define LIBIPW_FRAME_LEN                (LIBIPW_DATA_LEN + LIBIPW_HLEN)
  48
  49 #define MIN_FRAG_THRESHOLD     256U
  50 #define MAX_FRAG_THRESHOLD     2346U
  51
  52 /* QOS control */
  53 #define LIBIPW_QCTL_TID         0x000F
  54
  55 /* debug macros */
  56
  57 #ifdef CONFIG_LIBIPW_DEBUG
  58 extern u32 libipw_debug_level;
  59 #define LIBIPW_DEBUG(level, fmt, args...) \
  60 do { if (libipw_debug_level & (level)) \
  61   printk(KERN_DEBUG "libipw: %s " fmt, __func__ , ## args); } while (0)
  62 #else
  63 #define LIBIPW_DEBUG(level, fmt, args...) do {} while (0)
  64 #endif                          /* CONFIG_LIBIPW_DEBUG */
  65
  66 /*
  67  * To use the debug system:
  68  *
  69  * If you are defining a new debug classification, simply add it to the #define
  70  * list here in the form of:
  71  *
  72  * #define LIBIPW_DL_xxxx VALUE
  73  *
  74  * shifting value to the left one bit from the previous entry.  xxxx should be
  75  * the name of the classification (for example, WEP)
  76  *
  77  * You then need to either add a LIBIPW_xxxx_DEBUG() macro definition for your
  78  * classification, or use LIBIPW_DEBUG(LIBIPW_DL_xxxx, ...) whenever you want
  79  * to send output to that classification.
  80  *
  81  * To add your debug level to the list of levels seen when you perform
  82  *
  83  * % cat /proc/net/ieee80211/debug_level
  84  *
  85  * you simply need to add your entry to the libipw_debug_level array.
  86  *
  87  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
  88  * CONFIG_LIBIPW_DEBUG defined in your kernel configuration
  89  *
  90  */
  91
  92 #define LIBIPW_DL_INFO          (1<<0)
  93 #define LIBIPW_DL_WX            (1<<1)
  94 #define LIBIPW_DL_SCAN          (1<<2)
  95 #define LIBIPW_DL_STATE         (1<<3)
  96 #define LIBIPW_DL_MGMT          (1<<4)
  97 #define LIBIPW_DL_FRAG          (1<<5)
  98 #define LIBIPW_DL_DROP          (1<<7)
  99
 100 #define LIBIPW_DL_TX            (1<<8)
 101 #define LIBIPW_DL_RX            (1<<9)
 102 #define LIBIPW_DL_QOS           (1<<31)
 103
 104 #define LIBIPW_ERROR(f, a...) printk(KERN_ERR "libipw: " f, ## a)
 105 #define LIBIPW_WARNING(f, a...) printk(KERN_WARNING "libipw: " f, ## a)
 106 #define LIBIPW_DEBUG_INFO(f, a...)   LIBIPW_DEBUG(LIBIPW_DL_INFO, f, ## a)
 107
 108 #define LIBIPW_DEBUG_WX(f, a...)     LIBIPW_DEBUG(LIBIPW_DL_WX, f, ## a)
 109 #define LIBIPW_DEBUG_SCAN(f, a...)   LIBIPW_DEBUG(LIBIPW_DL_SCAN, f, ## a)
 110 #define LIBIPW_DEBUG_STATE(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_STATE, f, ## a)
 111 #define LIBIPW_DEBUG_MGMT(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_MGMT, f, ## a)
 112 #define LIBIPW_DEBUG_FRAG(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_FRAG, f, ## a)
 113 #define LIBIPW_DEBUG_DROP(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_DROP, f, ## a)
 114 #define LIBIPW_DEBUG_TX(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_TX, f, ## a)
 115 #define LIBIPW_DEBUG_RX(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_RX, f, ## a)
 116 #define LIBIPW_DEBUG_QOS(f, a...)  LIBIPW_DEBUG(LIBIPW_DL_QOS, f, ## a)
 117 #include <linux/netdevice.h>
 118 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 119
 120 #ifndef WIRELESS_SPY
 121 #define WIRELESS_SPY            /* enable iwspy support */
 122 #endif
 123 #include <net/iw_handler.h>     /* new driver API */
 124
 125 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 126
 127 #ifndef ETH_P_80211_RAW
 128 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 129 #endif
 130
 131 /* IEEE 802.11 defines */
 132
 133 #define P80211_OUI_LEN 3
 134
 135 struct libipw_snap_hdr {
 136
 137         u8 dsap;                /* always 0xAA */
 138         u8 ssap;                /* always 0xAA */
 139         u8 ctrl;                /* always 0x03 */
 140         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 141
 142 } __packed;
 143
 144 #define SNAP_SIZE sizeof(struct libipw_snap_hdr)
 145
 146 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 147 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 148 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 149
 150 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 151 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 152
 153 #define LIBIPW_STATMASK_SIGNAL (1<<0)
 154 #define LIBIPW_STATMASK_RSSI (1<<1)
 155 #define LIBIPW_STATMASK_NOISE (1<<2)
 156 #define LIBIPW_STATMASK_RATE (1<<3)
 157 #define LIBIPW_STATMASK_WEMASK 0x7
 158
 159 #define LIBIPW_CCK_MODULATION    (1<<0)
 160 #define LIBIPW_OFDM_MODULATION   (1<<1)
 161
 162 #define LIBIPW_24GHZ_BAND     (1<<0)
 163 #define LIBIPW_52GHZ_BAND     (1<<1)
 164
 165 #define LIBIPW_CCK_RATE_1MB                     0x02
 166 #define LIBIPW_CCK_RATE_2MB                     0x04
 167 #define LIBIPW_CCK_RATE_5MB                     0x0B
 168 #define LIBIPW_CCK_RATE_11MB                    0x16
 169 #define LIBIPW_OFDM_RATE_6MB                    0x0C
 170 #define LIBIPW_OFDM_RATE_9MB                    0x12
 171 #define LIBIPW_OFDM_RATE_12MB           0x18
 172 #define LIBIPW_OFDM_RATE_18MB           0x24
 173 #define LIBIPW_OFDM_RATE_24MB           0x30
 174 #define LIBIPW_OFDM_RATE_36MB           0x48
 175 #define LIBIPW_OFDM_RATE_48MB           0x60
 176 #define LIBIPW_OFDM_RATE_54MB           0x6C
 177 #define LIBIPW_BASIC_RATE_MASK          0x80
 178
 179 #define LIBIPW_CCK_RATE_1MB_MASK                (1<<0)
 180 #define LIBIPW_CCK_RATE_2MB_MASK                (1<<1)
 181 #define LIBIPW_CCK_RATE_5MB_MASK                (1<<2)
 182 #define LIBIPW_CCK_RATE_11MB_MASK               (1<<3)
 183 #define LIBIPW_OFDM_RATE_6MB_MASK               (1<<4)
 184 #define LIBIPW_OFDM_RATE_9MB_MASK               (1<<5)
 185 #define LIBIPW_OFDM_RATE_12MB_MASK              (1<<6)
 186 #define LIBIPW_OFDM_RATE_18MB_MASK              (1<<7)
 187 #define LIBIPW_OFDM_RATE_24MB_MASK              (1<<8)
 188 #define LIBIPW_OFDM_RATE_36MB_MASK              (1<<9)
 189 #define LIBIPW_OFDM_RATE_48MB_MASK              (1<<10)
 190 #define LIBIPW_OFDM_RATE_54MB_MASK              (1<<11)
 191
 192 #define LIBIPW_CCK_RATES_MASK           0x0000000F
 193 #define LIBIPW_CCK_BASIC_RATES_MASK     (LIBIPW_CCK_RATE_1MB_MASK | \
 194         LIBIPW_CCK_RATE_2MB_MASK)
 195 #define LIBIPW_CCK_DEFAULT_RATES_MASK   (LIBIPW_CCK_BASIC_RATES_MASK | \
 196         LIBIPW_CCK_RATE_5MB_MASK | \
 197         LIBIPW_CCK_RATE_11MB_MASK)
 198
 199 #define LIBIPW_OFDM_RATES_MASK          0x00000FF0
 200 #define LIBIPW_OFDM_BASIC_RATES_MASK    (LIBIPW_OFDM_RATE_6MB_MASK | \
 201         LIBIPW_OFDM_RATE_12MB_MASK | \
 202         LIBIPW_OFDM_RATE_24MB_MASK)
 203 #define LIBIPW_OFDM_DEFAULT_RATES_MASK  (LIBIPW_OFDM_BASIC_RATES_MASK | \
 204         LIBIPW_OFDM_RATE_9MB_MASK  | \
 205         LIBIPW_OFDM_RATE_18MB_MASK | \
 206         LIBIPW_OFDM_RATE_36MB_MASK | \
 207         LIBIPW_OFDM_RATE_48MB_MASK | \
 208         LIBIPW_OFDM_RATE_54MB_MASK)
 209 #define LIBIPW_DEFAULT_RATES_MASK (LIBIPW_OFDM_DEFAULT_RATES_MASK | \
 210                                 LIBIPW_CCK_DEFAULT_RATES_MASK)
 211
 212 #define LIBIPW_NUM_OFDM_RATES       8
 213 #define LIBIPW_NUM_CCK_RATES                4
 214 #define LIBIPW_OFDM_SHIFT_MASK_A         4
 215
 216 /* NOTE: This data is for statistical purposes; not all hardware provides this
 217  *       information for frames received.
 218  *       For libipw_rx_mgt, you need to set at least the 'len' parameter.
 219  */
 220 struct libipw_rx_stats {
 221         u32 mac_time;
 222         s8 rssi;
 223         u8 signal;
 224         u8 noise;
 225         u16 rate;               /* in 100 kbps */
 226         u8 received_channel;
 227         u8 control;
 228         u8 mask;
 229         u8 freq;
 230         u16 len;
 231         u64 tsf;
 232         u32 beacon_time;
 233 };
 234
 235 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 236  * three fragmented frames. This define can be increased to support more
 237  * concurrent frames, but it should be noted that each entry can consume about
 238  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 239 #define LIBIPW_FRAG_CACHE_LEN 4
 240
 241 struct libipw_frag_entry {
 242         unsigned long first_frag_time;
 243         unsigned int seq;
 244         unsigned int last_frag;
 245         struct sk_buff *skb;
 246         u8 src_addr[ETH_ALEN];
 247         u8 dst_addr[ETH_ALEN];
 248 };
 249
 250 struct libipw_stats {
 251         unsigned int tx_unicast_frames;
 252         unsigned int tx_multicast_frames;
 253         unsigned int tx_fragments;
 254         unsigned int tx_unicast_octets;
 255         unsigned int tx_multicast_octets;
 256         unsigned int tx_deferred_transmissions;
 257         unsigned int tx_single_retry_frames;
 258         unsigned int tx_multiple_retry_frames;
 259         unsigned int tx_retry_limit_exceeded;
 260         unsigned int tx_discards;
 261         unsigned int rx_unicast_frames;
 262         unsigned int rx_multicast_frames;
 263         unsigned int rx_fragments;
 264         unsigned int rx_unicast_octets;
 265         unsigned int rx_multicast_octets;
 266         unsigned int rx_fcs_errors;
 267         unsigned int rx_discards_no_buffer;
 268         unsigned int tx_discards_wrong_sa;
 269         unsigned int rx_discards_undecryptable;
 270         unsigned int rx_message_in_msg_fragments;
 271         unsigned int rx_message_in_bad_msg_fragments;
 272 };
 273
 274 struct libipw_device;
 275
 276 #define SEC_KEY_1               (1<<0)
 277 #define SEC_KEY_2               (1<<1)
 278 #define SEC_KEY_3               (1<<2)
 279 #define SEC_KEY_4               (1<<3)
 280 #define SEC_ACTIVE_KEY          (1<<4)
 281 #define SEC_AUTH_MODE           (1<<5)
 282 #define SEC_UNICAST_GROUP       (1<<6)
 283 #define SEC_LEVEL               (1<<7)
 284 #define SEC_ENABLED             (1<<8)
 285 #define SEC_ENCRYPT             (1<<9)
 286
 287 #define SEC_LEVEL_0             0       /* None */
 288 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 289 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 290 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 291 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 292
 293 #define SEC_ALG_NONE            0
 294 #define SEC_ALG_WEP             1
 295 #define SEC_ALG_TKIP            2
 296 #define SEC_ALG_CCMP            3
 297
 298 #define WEP_KEYS                4
 299 #define WEP_KEY_LEN             13
 300 #define SCM_KEY_LEN             32
 301 #define SCM_TEMPORAL_KEY_LENGTH 16
 302
 303 struct libipw_security {
 304         u16 active_key:2, enabled:1, unicast_uses_group:1, encrypt:1;
 305         u8 auth_mode;
 306         u8 encode_alg[WEP_KEYS];
 307         u8 key_sizes[WEP_KEYS];
 308         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 309         u8 level;
 310         u16 flags;
 311 } __packed;
 312
 313 /*
 314
 315  802.11 data frame from AP
 316
 317       ,-------------------------------------------------------------------.
 318 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 319       |------|------|---------|---------|---------|------|---------|------|
 320 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 321       |      | tion | (BSSID) |         |         | ence |  data   |      |
 322       `-------------------------------------------------------------------'
 323
 324 Total: 28-2340 bytes
 325
 326 */
 327
 328 #define BEACON_PROBE_SSID_ID_POSITION 12
 329
 330 struct libipw_hdr_1addr {
 331         __le16 frame_ctl;
 332         __le16 duration_id;
 333         u8 addr1[ETH_ALEN];
 334         u8 payload[];
 335 } __packed;
 336
 337 struct libipw_hdr_2addr {
 338         __le16 frame_ctl;
 339         __le16 duration_id;
 340         u8 addr1[ETH_ALEN];
 341         u8 addr2[ETH_ALEN];
 342         u8 payload[];
 343 } __packed;
 344
 345 struct libipw_hdr_3addr {
 346         /* New members MUST be added within the __struct_group() macro below. */
 347         __struct_group(libipw_hdr_3addr_hdr, hdr, __packed,
 348                 __le16 frame_ctl;
 349                 __le16 duration_id;
 350                 u8 addr1[ETH_ALEN];
 351                 u8 addr2[ETH_ALEN];
 352                 u8 addr3[ETH_ALEN];
 353                 __le16 seq_ctl;
 354         );
 355         u8 payload[];
 356 } __packed;
 357 static_assert(offsetof(struct libipw_hdr_3addr, payload) == sizeof(struct libipw_hdr_3addr_hdr),
 358               "struct member likely outside of __struct_group()");
 359
 360 struct libipw_hdr_4addr {
 361         __le16 frame_ctl;
 362         __le16 duration_id;
 363         u8 addr1[ETH_ALEN];
 364         u8 addr2[ETH_ALEN];
 365         u8 addr3[ETH_ALEN];
 366         __le16 seq_ctl;
 367         u8 addr4[ETH_ALEN];
 368         u8 payload[];
 369 } __packed;
 370
 371 struct libipw_hdr_3addrqos {
 372         __le16 frame_ctl;
 373         __le16 duration_id;
 374         u8 addr1[ETH_ALEN];
 375         u8 addr2[ETH_ALEN];
 376         u8 addr3[ETH_ALEN];
 377         __le16 seq_ctl;
 378         u8 payload[0];
 379         __le16 qos_ctl;
 380 } __packed;
 381
 382 struct libipw_info_element {
 383         u8 id;
 384         u8 len;
 385         u8 data[];
 386 } __packed;
 387
 388 /*
 389  * These are the data types that can make up management packets
 390  *
 391         u16 auth_algorithm;
 392         u16 auth_sequence;
 393         u16 beacon_interval;
 394         u16 capability;
 395         u8 current_ap[ETH_ALEN];
 396         u16 listen_interval;
 397         struct {
 398                 u16 association_id:14, reserved:2;
 399         } __packed;
 400         u32 time_stamp[2];
 401         u16 reason;
 402         u16 status;
 403 */
 404
 405 struct libipw_auth {
 406         struct libipw_hdr_3addr_hdr header;
 407         __le16 algorithm;
 408         __le16 transaction;
 409         __le16 status;
 410         /* challenge */
 411         u8 variable[];
 412 } __packed;
 413
 414 struct libipw_channel_switch {
 415         u8 id;
 416         u8 len;
 417         u8 mode;
 418         u8 channel;
 419         u8 count;
 420 } __packed;
 421
 422 struct libipw_action {
 423         struct libipw_hdr_3addr_hdr header;
 424         u8 category;
 425         u8 action;
 426         union {
 427                 struct libipw_action_exchange {
 428                         u8 token;
 429                 } exchange;
 430                 struct libipw_channel_switch channel_switch;
 431
 432         } format;
 433 } __packed;
 434
 435 struct libipw_disassoc {
 436         struct libipw_hdr_3addr_hdr header;
 437         __le16 reason;
 438 } __packed;
 439
 440 /* Alias deauth for disassoc */
 441 #define libipw_deauth libipw_disassoc
 442
 443 struct libipw_probe_request {
 444         struct libipw_hdr_3addr_hdr header;
 445         /* SSID, supported rates */
 446         u8 variable[];
 447 } __packed;
 448
 449 struct libipw_probe_response {
 450         struct libipw_hdr_3addr_hdr header;
 451         __le32 time_stamp[2];
 452         __le16 beacon_interval;
 453         __le16 capability;
 454         /* SSID, supported rates, FH params, DS params,
 455          * CF params, IBSS params, TIM (if beacon), RSN */
 456         u8 variable[];
 457 } __packed;
 458
 459 /* Alias beacon for probe_response */
 460 #define libipw_beacon libipw_probe_response
 461
 462 struct libipw_reassoc_request {
 463         struct libipw_hdr_3addr_hdr header;
 464         __le16 capability;
 465         __le16 listen_interval;
 466         u8 current_ap[ETH_ALEN];
 467         u8 variable[];
 468 } __packed;
 469
 470 struct libipw_assoc_response {
 471         struct libipw_hdr_3addr_hdr header;
 472         __le16 capability;
 473         __le16 status;
 474         __le16 aid;
 475         /* supported rates */
 476         u8 variable[];
 477 } __packed;
 478
 479 struct libipw_txb {
 480         u8 nr_frags;
 481         u8 encrypted;
 482         u8 rts_included;
 483         u8 reserved;
 484         u16 frag_size;
 485         u16 payload_size;
 486         struct sk_buff *fragments[] __counted_by(nr_frags);
 487 };
 488
 489 /* SWEEP TABLE ENTRIES NUMBER */
 490 #define MAX_SWEEP_TAB_ENTRIES             42
 491 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 492 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 493  * only use 8, and then use extended rates for the remaining supported
 494  * rates.  Other APs, however, stick all of their supported rates on the
 495  * main rates information element... */
 496 #define MAX_RATES_LENGTH                  ((u8)12)
 497 #define MAX_RATES_EX_LENGTH               ((u8)16)
 498 #define MAX_NETWORK_COUNT                  128
 499
 500 #define CRC_LENGTH                 4U
 501
 502 #define MAX_WPA_IE_LEN 64
 503
 504 #define NETWORK_HAS_OFDM       (1<<1)
 505 #define NETWORK_HAS_CCK        (1<<2)
 506
 507 /* QoS structure */
 508 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 509 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 510 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 511                                          NETWORK_HAS_QOS_INFORMATION)
 512
 513 /* 802.11h */
 514 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 515 #define NETWORK_HAS_CSA                 (1<<6)
 516 #define NETWORK_HAS_QUIET               (1<<7)
 517 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 518 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 519
 520 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 521
 522 #define QOS_QUEUE_NUM                   4
 523 #define QOS_OUI_LEN                     3
 524 #define QOS_OUI_TYPE                    2
 525 #define QOS_ELEMENT_ID                  221
 526 #define QOS_OUI_INFO_SUB_TYPE           0
 527 #define QOS_OUI_PARAM_SUB_TYPE          1
 528 #define QOS_VERSION_1                   1
 529 #define QOS_AIFSN_MIN_VALUE             2
 530
 531 struct libipw_qos_information_element {
 532         u8 elementID;
 533         u8 length;
 534         u8 qui[QOS_OUI_LEN];
 535         u8 qui_type;
 536         u8 qui_subtype;
 537         u8 version;
 538         u8 ac_info;
 539 } __packed;
 540
 541 struct libipw_qos_ac_parameter {
 542         u8 aci_aifsn;
 543         u8 ecw_min_max;
 544         __le16 tx_op_limit;
 545 } __packed;
 546
 547 struct libipw_qos_parameter_info {
 548         struct libipw_qos_information_element info_element;
 549         u8 reserved;
 550         struct libipw_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 551 } __packed;
 552
 553 struct libipw_qos_parameters {
 554         __le16 cw_min[QOS_QUEUE_NUM];
 555         __le16 cw_max[QOS_QUEUE_NUM];
 556         u8 aifs[QOS_QUEUE_NUM];
 557         u8 flag[QOS_QUEUE_NUM];
 558         __le16 tx_op_limit[QOS_QUEUE_NUM];
 559 } __packed;
 560
 561 struct libipw_qos_data {
 562         struct libipw_qos_parameters parameters;
 563         int active;
 564         int supported;
 565         u8 param_count;
 566         u8 old_param_count;
 567 };
 568
 569 struct libipw_tim_parameters {
 570         u8 tim_count;
 571         u8 tim_period;
 572 } __packed;
 573
 574 /*******************************************************/
 575
 576 struct libipw_tpc_report {
 577         u8 transmit_power;
 578         u8 link_margin;
 579 } __packed;
 580
 581 struct libipw_channel_map {
 582         u8 channel;
 583         u8 map;
 584 } __packed;
 585
 586 struct libipw_csa {
 587         u8 mode;
 588         u8 channel;
 589         u8 count;
 590 } __packed;
 591
 592 struct libipw_quiet {
 593         u8 count;
 594         u8 period;
 595         u8 duration;
 596         u8 offset;
 597 } __packed;
 598
 599 struct libipw_network {
 600         /* These entries are used to identify a unique network */
 601         u8 bssid[ETH_ALEN];
 602         u8 channel;
 603         /* Ensure null-terminated for any debug msgs */
 604         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 605         u8 ssid_len;
 606
 607         struct libipw_qos_data qos_data;
 608
 609         /* These are network statistics */
 610         struct libipw_rx_stats stats;
 611         u16 capability;
 612         u8 rates[MAX_RATES_LENGTH];
 613         u8 rates_len;
 614         u8 rates_ex[MAX_RATES_EX_LENGTH];
 615         u8 rates_ex_len;
 616         unsigned long last_scanned;
 617         u8 mode;
 618         u32 flags;
 619         u32 last_associate;
 620         u32 time_stamp[2];
 621         u16 beacon_interval;
 622         u16 listen_interval;
 623         u16 atim_window;
 624         u8 erp_value;
 625         u8 wpa_ie[MAX_WPA_IE_LEN];
 626         size_t wpa_ie_len;
 627         u8 rsn_ie[MAX_WPA_IE_LEN];
 628         size_t rsn_ie_len;
 629         struct libipw_tim_parameters tim;
 630
 631         /* 802.11h info */
 632
 633         /* Power Constraint - mandatory if spctrm mgmt required */
 634         u8 power_constraint;
 635
 636         /* TPC Report - mandatory if spctrm mgmt required */
 637         struct libipw_tpc_report tpc_report;
 638
 639         /* Channel Switch Announcement - optional if spctrm mgmt required */
 640         struct libipw_csa csa;
 641
 642         /* Quiet - optional if spctrm mgmt required */
 643         struct libipw_quiet quiet;
 644
 645         struct list_head list;
 646 };
 647
 648 enum libipw_state {
 649         LIBIPW_UNINITIALIZED = 0,
 650         LIBIPW_INITIALIZED,
 651         LIBIPW_ASSOCIATING,
 652         LIBIPW_ASSOCIATED,
 653         LIBIPW_AUTHENTICATING,
 654         LIBIPW_AUTHENTICATED,
 655         LIBIPW_SHUTDOWN
 656 };
 657
 658 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 659 #define DEFAULT_FTS 2346
 660
 661 #define CFG_LIBIPW_RESERVE_FCS (1<<0)
 662 #define CFG_LIBIPW_COMPUTE_FCS (1<<1)
 663 #define CFG_LIBIPW_RTS (1<<2)
 664
 665 #define LIBIPW_24GHZ_MIN_CHANNEL 1
 666 #define LIBIPW_24GHZ_MAX_CHANNEL 14
 667 #define LIBIPW_24GHZ_CHANNELS (LIBIPW_24GHZ_MAX_CHANNEL - \
 668                                   LIBIPW_24GHZ_MIN_CHANNEL + 1)
 669
 670 #define LIBIPW_52GHZ_MIN_CHANNEL 34
 671 #define LIBIPW_52GHZ_MAX_CHANNEL 165
 672 #define LIBIPW_52GHZ_CHANNELS (LIBIPW_52GHZ_MAX_CHANNEL - \
 673                                   LIBIPW_52GHZ_MIN_CHANNEL + 1)
 674
 675 enum {
 676         LIBIPW_CH_PASSIVE_ONLY = (1 << 0),
 677         LIBIPW_CH_80211H_RULES = (1 << 1),
 678         LIBIPW_CH_B_ONLY = (1 << 2),
 679         LIBIPW_CH_NO_IBSS = (1 << 3),
 680         LIBIPW_CH_UNIFORM_SPREADING = (1 << 4),
 681         LIBIPW_CH_RADAR_DETECT = (1 << 5),
 682         LIBIPW_CH_INVALID = (1 << 6),
 683 };
 684
 685 struct libipw_channel {
 686         u32 freq;       /* in MHz */
 687         u8 channel;
 688         u8 flags;
 689         u8 max_power;   /* in dBm */
 690 };
 691
 692 struct libipw_geo {
 693         u8 name[4];
 694         u8 bg_channels;
 695         u8 a_channels;
 696         struct libipw_channel bg[LIBIPW_24GHZ_CHANNELS];
 697         struct libipw_channel a[LIBIPW_52GHZ_CHANNELS];
 698 };
 699
 700 #define NUM_WEP_KEYS    4
 701
 702 enum {
 703         IEEE80211_CRYPTO_TKIP_COUNTERMEASURES = (1 << 0),
 704 };
 705
 706 struct module;
 707
 708 struct libipw_crypto_ops {
 709         const char *name;
 710         struct list_head list;
 711
 712         /* init new crypto context (e.g., allocate private data space,
 713          * select IV, etc.); returns NULL on failure or pointer to allocated
 714          * private data on success */
 715         void *(*init) (int keyidx);
 716
 717         /* deinitialize crypto context and free allocated private data */
 718         void (*deinit) (void *priv);
 719
 720         /* encrypt/decrypt return < 0 on error or >= 0 on success. The return
 721          * value from decrypt_mpdu is passed as the keyidx value for
 722          * decrypt_msdu. skb must have enough head and tail room for the
 723          * encryption; if not, error will be returned; these functions are
 724          * called for all MPDUs (i.e., fragments).
 725          */
 726         int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
 727         int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
 728
 729         /* These functions are called for full MSDUs, i.e. full frames.
 730          * These can be NULL if full MSDU operations are not needed. */
 731         int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
 732         int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
 733                              void *priv);
 734
 735         int (*set_key) (void *key, int len, u8 * seq, void *priv);
 736         int (*get_key) (void *key, int len, u8 * seq, void *priv);
 737
 738         /* procfs handler for printing out key information and possible
 739          * statistics */
 740         void (*print_stats) (struct seq_file *m, void *priv);
 741
 742         /* Crypto specific flag get/set for configuration settings */
 743         unsigned long (*get_flags) (void *priv);
 744         unsigned long (*set_flags) (unsigned long flags, void *priv);
 745
 746         /* maximum number of bytes added by encryption; encrypt buf is
 747          * allocated with extra_prefix_len bytes, copy of in_buf, and
 748          * extra_postfix_len; encrypt need not use all this space, but
 749          * the result must start at the beginning of the buffer and correct
 750          * length must be returned */
 751         int extra_mpdu_prefix_len, extra_mpdu_postfix_len;
 752         int extra_msdu_prefix_len, extra_msdu_postfix_len;
 753
 754         struct module *owner;
 755 };
 756
 757 struct libipw_crypt_info {
 758         char *name;
 759         /* Most clients will already have a lock,
 760            so just point to that. */
 761         spinlock_t *lock;
 762
 763         struct libipw_crypt_data *crypt[NUM_WEP_KEYS];
 764         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
 765         struct list_head crypt_deinit_list;
 766         struct timer_list crypt_deinit_timer;
 767         int crypt_quiesced;
 768 };
 769
 770 struct libipw_device {
 771         struct net_device *dev;
 772         struct wireless_dev wdev;
 773         struct libipw_security sec;
 774
 775         /* Bookkeeping structures */
 776         struct libipw_stats ieee_stats;
 777
 778         struct libipw_geo geo;
 779         struct ieee80211_supported_band bg_band;
 780         struct ieee80211_supported_band a_band;
 781
 782         /* Probe / Beacon management */
 783         struct list_head network_free_list;
 784         struct list_head network_list;
 785         struct libipw_network *networks[MAX_NETWORK_COUNT];
 786         int scans;
 787         int scan_age;
 788
 789         int iw_mode;            /* operating mode (IW_MODE_*) */
 790         struct iw_spy_data spy_data;    /* iwspy support */
 791         bool spy_enabled;
 792
 793         spinlock_t lock;
 794
 795         int tx_headroom;        /* Set to size of any additional room needed at front
 796                                  * of allocated Tx SKBs */
 797         u32 config;
 798
 799         /* WEP and other encryption related settings at the device level */
 800         int open_wep;           /* Set to 1 to allow unencrypted frames */
 801
 802         /* If the host performs {en,de}cryption, then set to 1 */
 803         int host_encrypt;
 804         int host_encrypt_msdu;
 805         int host_decrypt;
 806         /* host performs multicast decryption */
 807         int host_mc_decrypt;
 808
 809         /* host should strip IV and ICV from protected frames */
 810         /* meaningful only when hardware decryption is being used */
 811         int host_strip_iv_icv;
 812
 813         int host_open_frag;
 814         int ieee802_1x;         /* is IEEE 802.1X used */
 815
 816         /* WPA data */
 817         int wpa_enabled;
 818         int drop_unencrypted;
 819         int privacy_invoked;
 820         size_t wpa_ie_len;
 821         u8 *wpa_ie;
 822
 823         struct libipw_crypt_info crypt_info;
 824
 825         int bcrx_sta_key;       /* use individual keys to override default keys even
 826                                  * with RX of broad/multicast frames */
 827
 828         /* Fragmentation structures */
 829         struct libipw_frag_entry frag_cache[LIBIPW_FRAG_CACHE_LEN];
 830         unsigned int frag_next_idx;
 831         u16 fts;                /* Fragmentation Threshold */
 832         u16 rts;                /* RTS threshold */
 833
 834         /* Association info */
 835         u8 bssid[ETH_ALEN];
 836
 837         enum libipw_state state;
 838
 839         int mode;               /* A, B, G */
 840         int modulation;         /* CCK, OFDM */
 841         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
 842         int abg_true;           /* ABG flag              */
 843
 844         int perfect_rssi;
 845         int worst_rssi;
 846
 847         u16 prev_seq_ctl;       /* used to drop duplicate frames */
 848
 849         /* Callback functions */
 850         void (*set_security) (struct net_device * dev,
 851                               struct libipw_security * sec);
 852         netdev_tx_t (*hard_start_xmit) (struct libipw_txb * txb,
 853                                         struct net_device * dev, int pri);
 854         int (*is_queue_full) (struct net_device * dev, int pri);
 855
 856         int (*handle_management) (struct net_device * dev,
 857                                   struct libipw_network * network, u16 type);
 858         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
 859
 860         /* Typical STA methods */
 861         int (*handle_auth) (struct net_device * dev,
 862                             struct libipw_auth * auth);
 863         int (*handle_deauth) (struct net_device * dev,
 864                               struct libipw_deauth * auth);
 865         int (*handle_action) (struct net_device * dev,
 866                               struct libipw_action * action,
 867                               struct libipw_rx_stats * stats);
 868         int (*handle_disassoc) (struct net_device * dev,
 869                                 struct libipw_disassoc * assoc);
 870         int (*handle_beacon) (struct net_device * dev,
 871                               struct libipw_beacon * beacon,
 872                               struct libipw_network * network);
 873         int (*handle_probe_response) (struct net_device * dev,
 874                                       struct libipw_probe_response * resp,
 875                                       struct libipw_network * network);
 876         int (*handle_probe_request) (struct net_device * dev,
 877                                      struct libipw_probe_request * req,
 878                                      struct libipw_rx_stats * stats);
 879         int (*handle_assoc_response) (struct net_device * dev,
 880                                       struct libipw_assoc_response * resp,
 881                                       struct libipw_network * network);
 882
 883         /* Typical AP methods */
 884         int (*handle_assoc_request) (struct net_device * dev);
 885         int (*handle_reassoc_request) (struct net_device * dev,
 886                                        struct libipw_reassoc_request * req);
 887
 888         /* This must be the last item so that it points to the data
 889          * allocated beyond this structure by alloc_libipw */
 890         u8 priv[];
 891 };
 892
 893 #define IEEE_A            (1<<0)
 894 #define IEEE_B            (1<<1)
 895 #define IEEE_G            (1<<2)
 896 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
 897
 898 static inline void *libipw_priv(struct net_device *dev)
 899 {
 900         return ((struct libipw_device *)netdev_priv(dev))->priv;
 901 }
 902
 903 static inline int libipw_is_valid_mode(struct libipw_device *ieee,
 904                                           int mode)
 905 {
 906         /*
 907          * It is possible for both access points and our device to support
 908          * combinations of modes, so as long as there is one valid combination
 909          * of ap/device supported modes, then return success
 910          *
 911          */
 912         if ((mode & IEEE_A) &&
 913             (ieee->modulation & LIBIPW_OFDM_MODULATION) &&
 914             (ieee->freq_band & LIBIPW_52GHZ_BAND))
 915                 return 1;
 916
 917         if ((mode & IEEE_G) &&
 918             (ieee->modulation & LIBIPW_OFDM_MODULATION) &&
 919             (ieee->freq_band & LIBIPW_24GHZ_BAND))
 920                 return 1;
 921
 922         if ((mode & IEEE_B) &&
 923             (ieee->modulation & LIBIPW_CCK_MODULATION) &&
 924             (ieee->freq_band & LIBIPW_24GHZ_BAND))
 925                 return 1;
 926
 927         return 0;
 928 }
 929
 930 static inline int libipw_get_hdrlen(u16 fc)
 931 {
 932         int hdrlen = LIBIPW_3ADDR_LEN;
 933         u16 stype = WLAN_FC_GET_STYPE(fc);
 934
 935         switch (WLAN_FC_GET_TYPE(fc)) {
 936         case IEEE80211_FTYPE_DATA:
 937                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
 938                         hdrlen = LIBIPW_4ADDR_LEN;
 939                 if (stype & IEEE80211_STYPE_QOS_DATA)
 940                         hdrlen += 2;
 941                 break;
 942         case IEEE80211_FTYPE_CTL:
 943                 switch (WLAN_FC_GET_STYPE(fc)) {
 944                 case IEEE80211_STYPE_CTS:
 945                 case IEEE80211_STYPE_ACK:
 946                         hdrlen = LIBIPW_1ADDR_LEN;
 947                         break;
 948                 default:
 949                         hdrlen = LIBIPW_2ADDR_LEN;
 950                         break;
 951                 }
 952                 break;
 953         }
 954
 955         return hdrlen;
 956 }
 957
 958 static inline u8 *libipw_get_payload(struct ieee80211_hdr *hdr)
 959 {
 960         switch (libipw_get_hdrlen(le16_to_cpu(hdr->frame_control))) {
 961         case LIBIPW_1ADDR_LEN:
 962                 return ((struct libipw_hdr_1addr *)hdr)->payload;
 963         case LIBIPW_2ADDR_LEN:
 964                 return ((struct libipw_hdr_2addr *)hdr)->payload;
 965         case LIBIPW_3ADDR_LEN:
 966                 return ((struct libipw_hdr_3addr *)hdr)->payload;
 967         case LIBIPW_4ADDR_LEN:
 968                 return ((struct libipw_hdr_4addr *)hdr)->payload;
 969         }
 970         return NULL;
 971 }
 972
 973 static inline int libipw_is_ofdm_rate(u8 rate)
 974 {
 975         switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
 976         case LIBIPW_OFDM_RATE_6MB:
 977         case LIBIPW_OFDM_RATE_9MB:
 978         case LIBIPW_OFDM_RATE_12MB:
 979         case LIBIPW_OFDM_RATE_18MB:
 980         case LIBIPW_OFDM_RATE_24MB:
 981         case LIBIPW_OFDM_RATE_36MB:
 982         case LIBIPW_OFDM_RATE_48MB:
 983         case LIBIPW_OFDM_RATE_54MB:
 984                 return 1;
 985         }
 986         return 0;
 987 }
 988
 989 static inline int libipw_is_cck_rate(u8 rate)
 990 {
 991         switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
 992         case LIBIPW_CCK_RATE_1MB:
 993         case LIBIPW_CCK_RATE_2MB:
 994         case LIBIPW_CCK_RATE_5MB:
 995         case LIBIPW_CCK_RATE_11MB:
 996                 return 1;
 997         }
 998         return 0;
 999 }
1000
1001 /* libipw.c */
1002 void free_libipw(struct net_device *dev, int monitor);
1003 struct net_device *alloc_libipw(int sizeof_priv, int monitor);
1004
1005 void libipw_networks_age(struct libipw_device *ieee, unsigned long age_secs);
1006
1007 int libipw_set_encryption(struct libipw_device *ieee);
1008
1009 /* libipw_tx.c */
1010 netdev_tx_t libipw_xmit(struct sk_buff *skb, struct net_device *dev);
1011 void libipw_txb_free(struct libipw_txb *);
1012
1013 /* libipw_rx.c */
1014 void libipw_rx_any(struct libipw_device *ieee, struct sk_buff *skb,
1015                    struct libipw_rx_stats *stats);
1016 int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb,
1017               struct libipw_rx_stats *rx_stats);
1018 /* make sure to set stats->len */
1019 void libipw_rx_mgt(struct libipw_device *ieee, struct libipw_hdr_4addr *header,
1020                    struct libipw_rx_stats *stats);
1021
1022 /* libipw_geo.c */
1023 const struct libipw_geo *libipw_get_geo(struct libipw_device *ieee);
1024 void libipw_set_geo(struct libipw_device *ieee, const struct libipw_geo *geo);
1025
1026 int libipw_is_valid_channel(struct libipw_device *ieee, u8 channel);
1027 int libipw_channel_to_index(struct libipw_device *ieee, u8 channel);
1028 u8 libipw_freq_to_channel(struct libipw_device *ieee, u32 freq);
1029 u8 libipw_get_channel_flags(struct libipw_device *ieee, u8 channel);
1030 const struct libipw_channel *libipw_get_channel(struct libipw_device *ieee,
1031                                                 u8 channel);
1032 u32 libipw_channel_to_freq(struct libipw_device *ieee, u8 channel);
1033
1034 /* libipw_wx.c */
1035 int libipw_wx_get_scan(struct libipw_device *ieee, struct iw_request_info *info,
1036                        union iwreq_data *wrqu, char *key);
1037 int libipw_wx_set_encode(struct libipw_device *ieee,
1038                          struct iw_request_info *info, union iwreq_data *wrqu,
1039                          char *key);
1040 int libipw_wx_get_encode(struct libipw_device *ieee,
1041                          struct iw_request_info *info, union iwreq_data *wrqu,
1042                          char *key);
1043 int libipw_wx_set_encodeext(struct libipw_device *ieee,
1044                             struct iw_request_info *info,
1045                             union iwreq_data *wrqu, char *extra);
1046 int libipw_wx_get_encodeext(struct libipw_device *ieee,
1047                             struct iw_request_info *info,
1048                             union iwreq_data *wrqu, char *extra);
1049
1050 static inline void libipw_increment_scans(struct libipw_device *ieee)
1051 {
1052         ieee->scans++;
1053 }
1054
1055 static inline int libipw_get_scans(struct libipw_device *ieee)
1056 {
1057         return ieee->scans;
1058 }
1059
1060 struct libipw_crypt_data {
1061         struct list_head list;  /* delayed deletion list */
1062         const struct libipw_crypto_ops *ops;
1063         void *priv;
1064         atomic_t refcnt;
1065 };
1066
1067 int libipw_crypt_info_init(struct libipw_crypt_info *info, char *name,
1068                            spinlock_t *lock);
1069 void libipw_crypt_info_free(struct libipw_crypt_info *info);
1070 int libipw_register_crypto_ops(const struct libipw_crypto_ops *ops);
1071 int libipw_unregister_crypto_ops(const struct libipw_crypto_ops *ops);
1072 const struct libipw_crypto_ops *libipw_get_crypto_ops(const char *name);
1073 void libipw_crypt_delayed_deinit(struct libipw_crypt_info *info,
1074                                  struct libipw_crypt_data **crypt);
1075
1076 /* must be called in the listed order */
1077 int libipw_crypto_init(void);
1078 int libipw_crypto_ccmp_init(void);
1079 int libipw_crypto_tkip_init(void);
1080 int libipw_crypto_wep_init(void);
1081
1082 void libipw_crypto_wep_exit(void);
1083 void libipw_crypto_tkip_exit(void);
1084 void libipw_crypto_ccmp_exit(void);
1085 void libipw_crypto_exit(void);
1086
1087
1088 int ipw_wx_set_spy(struct net_device *dev, struct iw_request_info *info,
1089                    union iwreq_data *wrqu, char *extra);
1090 int ipw_wx_get_spy(struct net_device *dev, struct iw_request_info *info,
1091                    union iwreq_data *wrqu, char *extra);
1092 int ipw_wx_set_thrspy(struct net_device *dev, struct iw_request_info *info,
1093                       union iwreq_data *wrqu, char *extra);
1094 int ipw_wx_get_thrspy(struct net_device *dev, struct iw_request_info *info,
1095                       union iwreq_data *wrqu, char *extra);
1096 void libipw_spy_update(struct net_device *dev, unsigned char *address,
1097                        struct iw_quality *wstats);
1098
1099 #endif                          /* LIBIPW_H */