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 struct libipw_tpc_report { 588 u8 transmit_power; 589 u8 link_margin; 590 } __packed; 591 592 struct libipw_channel_map { 593 u8 channel; 594 u8 map; 595 } __packed; 596 597 struct libipw_ibss_dfs { 598 struct libipw_info_element ie; 599 u8 owner[ETH_ALEN]; 600 u8 recovery_interval; 601 struct libipw_channel_map channel_map[0]; 602 }; 603 604 struct libipw_csa { 605 u8 mode; 606 u8 channel; 607 u8 count; 608 } __packed; 609 610 struct libipw_quiet { 611 u8 count; 612 u8 period; 613 u8 duration; 614 u8 offset; 615 } __packed; 616 617 struct libipw_network { 618 /* These entries are used to identify a unique network */ 619 u8 bssid[ETH_ALEN]; 620 u8 channel; 621 /* Ensure null-terminated for any debug msgs */ 622 u8 ssid[IW_ESSID_MAX_SIZE + 1]; 623 u8 ssid_len; 624 625 struct libipw_qos_data qos_data; 626 627 /* These are network statistics */ 628 struct libipw_rx_stats stats; 629 u16 capability; 630 u8 rates[MAX_RATES_LENGTH]; 631 u8 rates_len; 632 u8 rates_ex[MAX_RATES_EX_LENGTH]; 633 u8 rates_ex_len; 634 unsigned long last_scanned; 635 u8 mode; 636 u32 flags; 637 u32 last_associate; 638 u32 time_stamp[2]; 639 u16 beacon_interval; 640 u16 listen_interval; 641 u16 atim_window; 642 u8 erp_value; 643 u8 wpa_ie[MAX_WPA_IE_LEN]; 644 size_t wpa_ie_len; 645 u8 rsn_ie[MAX_WPA_IE_LEN]; 646 size_t rsn_ie_len; 647 struct libipw_tim_parameters tim; 648 649 /* 802.11h info */ 650 651 /* Power Constraint - mandatory if spctrm mgmt required */ 652 u8 power_constraint; 653 654 /* TPC Report - mandatory if spctrm mgmt required */ 655 struct libipw_tpc_report tpc_report; 656 657 /* Channel Switch Announcement - optional if spctrm mgmt required */ 658 struct libipw_csa csa; 659 660 /* Quiet - optional if spctrm mgmt required */ 661 struct libipw_quiet quiet; 662 663 struct list_head list; 664 }; 665 666 enum libipw_state { 667 LIBIPW_UNINITIALIZED = 0, 668 LIBIPW_INITIALIZED, 669 LIBIPW_ASSOCIATING, 670 LIBIPW_ASSOCIATED, 671 LIBIPW_AUTHENTICATING, 672 LIBIPW_AUTHENTICATED, 673 LIBIPW_SHUTDOWN 674 }; 675 676 #define DEFAULT_MAX_SCAN_AGE (15 * HZ) 677 #define DEFAULT_FTS 2346 678 679 #define CFG_LIBIPW_RESERVE_FCS (1<<0) 680 #define CFG_LIBIPW_COMPUTE_FCS (1<<1) 681 #define CFG_LIBIPW_RTS (1<<2) 682 683 #define LIBIPW_24GHZ_MIN_CHANNEL 1 684 #define LIBIPW_24GHZ_MAX_CHANNEL 14 685 #define LIBIPW_24GHZ_CHANNELS (LIBIPW_24GHZ_MAX_CHANNEL - \ 686 LIBIPW_24GHZ_MIN_CHANNEL + 1) 687 688 #define LIBIPW_52GHZ_MIN_CHANNEL 34 689 #define LIBIPW_52GHZ_MAX_CHANNEL 165 690 #define LIBIPW_52GHZ_CHANNELS (LIBIPW_52GHZ_MAX_CHANNEL - \ 691 LIBIPW_52GHZ_MIN_CHANNEL + 1) 692 693 enum { 694 LIBIPW_CH_PASSIVE_ONLY = (1 << 0), 695 LIBIPW_CH_80211H_RULES = (1 << 1), 696 LIBIPW_CH_B_ONLY = (1 << 2), 697 LIBIPW_CH_NO_IBSS = (1 << 3), 698 LIBIPW_CH_UNIFORM_SPREADING = (1 << 4), 699 LIBIPW_CH_RADAR_DETECT = (1 << 5), 700 LIBIPW_CH_INVALID = (1 << 6), 701 }; 702 703 struct libipw_channel { 704 u32 freq; /* in MHz */ 705 u8 channel; 706 u8 flags; 707 u8 max_power; /* in dBm */ 708 }; 709 710 struct libipw_geo { 711 u8 name[4]; 712 u8 bg_channels; 713 u8 a_channels; 714 struct libipw_channel bg[LIBIPW_24GHZ_CHANNELS]; 715 struct libipw_channel a[LIBIPW_52GHZ_CHANNELS]; 716 }; 717 718 struct libipw_device { 719 struct net_device *dev; 720 struct wireless_dev wdev; 721 struct libipw_security sec; 722 723 /* Bookkeeping structures */ 724 struct libipw_stats ieee_stats; 725 726 struct libipw_geo geo; 727 struct ieee80211_supported_band bg_band; 728 struct ieee80211_supported_band a_band; 729 730 /* Probe / Beacon management */ 731 struct list_head network_free_list; 732 struct list_head network_list; 733 struct libipw_network *networks[MAX_NETWORK_COUNT]; 734 int scans; 735 int scan_age; 736 737 int iw_mode; /* operating mode (IW_MODE_*) */ 738 struct iw_spy_data spy_data; /* iwspy support */ 739 740 spinlock_t lock; 741 742 int tx_headroom; /* Set to size of any additional room needed at front 743 * of allocated Tx SKBs */ 744 u32 config; 745 746 /* WEP and other encryption related settings at the device level */ 747 int open_wep; /* Set to 1 to allow unencrypted frames */ 748 749 /* If the host performs {en,de}cryption, then set to 1 */ 750 int host_encrypt; 751 int host_encrypt_msdu; 752 int host_decrypt; 753 /* host performs multicast decryption */ 754 int host_mc_decrypt; 755 756 /* host should strip IV and ICV from protected frames */ 757 /* meaningful only when hardware decryption is being used */ 758 int host_strip_iv_icv; 759 760 int host_open_frag; 761 int ieee802_1x; /* is IEEE 802.1X used */ 762 763 /* WPA data */ 764 int wpa_enabled; 765 int drop_unencrypted; 766 int privacy_invoked; 767 size_t wpa_ie_len; 768 u8 *wpa_ie; 769 770 struct lib80211_crypt_info crypt_info; 771 772 int bcrx_sta_key; /* use individual keys to override default keys even 773 * with RX of broad/multicast frames */ 774 775 /* Fragmentation structures */ 776 struct libipw_frag_entry frag_cache[LIBIPW_FRAG_CACHE_LEN]; 777 unsigned int frag_next_idx; 778 u16 fts; /* Fragmentation Threshold */ 779 u16 rts; /* RTS threshold */ 780 781 /* Association info */ 782 u8 bssid[ETH_ALEN]; 783 784 enum libipw_state state; 785 786 int mode; /* A, B, G */ 787 int modulation; /* CCK, OFDM */ 788 int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */ 789 int abg_true; /* ABG flag */ 790 791 int perfect_rssi; 792 int worst_rssi; 793 794 u16 prev_seq_ctl; /* used to drop duplicate frames */ 795 796 /* Callback functions */ 797 void (*set_security) (struct net_device * dev, 798 struct libipw_security * sec); 799 netdev_tx_t (*hard_start_xmit) (struct libipw_txb * txb, 800 struct net_device * dev, int pri); 801 int (*is_queue_full) (struct net_device * dev, int pri); 802 803 int (*handle_management) (struct net_device * dev, 804 struct libipw_network * network, u16 type); 805 int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb); 806 807 /* Typical STA methods */ 808 int (*handle_auth) (struct net_device * dev, 809 struct libipw_auth * auth); 810 int (*handle_deauth) (struct net_device * dev, 811 struct libipw_deauth * auth); 812 int (*handle_action) (struct net_device * dev, 813 struct libipw_action * action, 814 struct libipw_rx_stats * stats); 815 int (*handle_disassoc) (struct net_device * dev, 816 struct libipw_disassoc * assoc); 817 int (*handle_beacon) (struct net_device * dev, 818 struct libipw_beacon * beacon, 819 struct libipw_network * network); 820 int (*handle_probe_response) (struct net_device * dev, 821 struct libipw_probe_response * resp, 822 struct libipw_network * network); 823 int (*handle_probe_request) (struct net_device * dev, 824 struct libipw_probe_request * req, 825 struct libipw_rx_stats * stats); 826 int (*handle_assoc_response) (struct net_device * dev, 827 struct libipw_assoc_response * resp, 828 struct libipw_network * network); 829 830 /* Typical AP methods */ 831 int (*handle_assoc_request) (struct net_device * dev); 832 int (*handle_reassoc_request) (struct net_device * dev, 833 struct libipw_reassoc_request * req); 834 835 /* This must be the last item so that it points to the data 836 * allocated beyond this structure by alloc_libipw */ 837 u8 priv[0]; 838 }; 839 840 #define IEEE_A (1<<0) 841 #define IEEE_B (1<<1) 842 #define IEEE_G (1<<2) 843 #define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G) 844 845 static inline void *libipw_priv(struct net_device *dev) 846 { 847 return ((struct libipw_device *)netdev_priv(dev))->priv; 848 } 849 850 static inline int libipw_is_valid_mode(struct libipw_device *ieee, 851 int mode) 852 { 853 /* 854 * It is possible for both access points and our device to support 855 * combinations of modes, so as long as there is one valid combination 856 * of ap/device supported modes, then return success 857 * 858 */ 859 if ((mode & IEEE_A) && 860 (ieee->modulation & LIBIPW_OFDM_MODULATION) && 861 (ieee->freq_band & LIBIPW_52GHZ_BAND)) 862 return 1; 863 864 if ((mode & IEEE_G) && 865 (ieee->modulation & LIBIPW_OFDM_MODULATION) && 866 (ieee->freq_band & LIBIPW_24GHZ_BAND)) 867 return 1; 868 869 if ((mode & IEEE_B) && 870 (ieee->modulation & LIBIPW_CCK_MODULATION) && 871 (ieee->freq_band & LIBIPW_24GHZ_BAND)) 872 return 1; 873 874 return 0; 875 } 876 877 static inline int libipw_get_hdrlen(u16 fc) 878 { 879 int hdrlen = LIBIPW_3ADDR_LEN; 880 u16 stype = WLAN_FC_GET_STYPE(fc); 881 882 switch (WLAN_FC_GET_TYPE(fc)) { 883 case IEEE80211_FTYPE_DATA: 884 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS)) 885 hdrlen = LIBIPW_4ADDR_LEN; 886 if (stype & IEEE80211_STYPE_QOS_DATA) 887 hdrlen += 2; 888 break; 889 case IEEE80211_FTYPE_CTL: 890 switch (WLAN_FC_GET_STYPE(fc)) { 891 case IEEE80211_STYPE_CTS: 892 case IEEE80211_STYPE_ACK: 893 hdrlen = LIBIPW_1ADDR_LEN; 894 break; 895 default: 896 hdrlen = LIBIPW_2ADDR_LEN; 897 break; 898 } 899 break; 900 } 901 902 return hdrlen; 903 } 904 905 static inline u8 *libipw_get_payload(struct ieee80211_hdr *hdr) 906 { 907 switch (libipw_get_hdrlen(le16_to_cpu(hdr->frame_control))) { 908 case LIBIPW_1ADDR_LEN: 909 return ((struct libipw_hdr_1addr *)hdr)->payload; 910 case LIBIPW_2ADDR_LEN: 911 return ((struct libipw_hdr_2addr *)hdr)->payload; 912 case LIBIPW_3ADDR_LEN: 913 return ((struct libipw_hdr_3addr *)hdr)->payload; 914 case LIBIPW_4ADDR_LEN: 915 return ((struct libipw_hdr_4addr *)hdr)->payload; 916 } 917 return NULL; 918 } 919 920 static inline int libipw_is_ofdm_rate(u8 rate) 921 { 922 switch (rate & ~LIBIPW_BASIC_RATE_MASK) { 923 case LIBIPW_OFDM_RATE_6MB: 924 case LIBIPW_OFDM_RATE_9MB: 925 case LIBIPW_OFDM_RATE_12MB: 926 case LIBIPW_OFDM_RATE_18MB: 927 case LIBIPW_OFDM_RATE_24MB: 928 case LIBIPW_OFDM_RATE_36MB: 929 case LIBIPW_OFDM_RATE_48MB: 930 case LIBIPW_OFDM_RATE_54MB: 931 return 1; 932 } 933 return 0; 934 } 935 936 static inline int libipw_is_cck_rate(u8 rate) 937 { 938 switch (rate & ~LIBIPW_BASIC_RATE_MASK) { 939 case LIBIPW_CCK_RATE_1MB: 940 case LIBIPW_CCK_RATE_2MB: 941 case LIBIPW_CCK_RATE_5MB: 942 case LIBIPW_CCK_RATE_11MB: 943 return 1; 944 } 945 return 0; 946 } 947 948 /* libipw.c */ 949 void free_libipw(struct net_device *dev, int monitor); 950 struct net_device *alloc_libipw(int sizeof_priv, int monitor); 951 int libipw_change_mtu(struct net_device *dev, int new_mtu); 952 953 void libipw_networks_age(struct libipw_device *ieee, unsigned long age_secs); 954 955 int libipw_set_encryption(struct libipw_device *ieee); 956 957 /* libipw_tx.c */ 958 netdev_tx_t libipw_xmit(struct sk_buff *skb, struct net_device *dev); 959 void libipw_txb_free(struct libipw_txb *); 960 961 /* libipw_rx.c */ 962 void libipw_rx_any(struct libipw_device *ieee, struct sk_buff *skb, 963 struct libipw_rx_stats *stats); 964 int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb, 965 struct libipw_rx_stats *rx_stats); 966 /* make sure to set stats->len */ 967 void libipw_rx_mgt(struct libipw_device *ieee, struct libipw_hdr_4addr *header, 968 struct libipw_rx_stats *stats); 969 970 /* libipw_geo.c */ 971 const struct libipw_geo *libipw_get_geo(struct libipw_device *ieee); 972 void libipw_set_geo(struct libipw_device *ieee, const struct libipw_geo *geo); 973 974 int libipw_is_valid_channel(struct libipw_device *ieee, u8 channel); 975 int libipw_channel_to_index(struct libipw_device *ieee, u8 channel); 976 u8 libipw_freq_to_channel(struct libipw_device *ieee, u32 freq); 977 u8 libipw_get_channel_flags(struct libipw_device *ieee, u8 channel); 978 const struct libipw_channel *libipw_get_channel(struct libipw_device *ieee, 979 u8 channel); 980 u32 libipw_channel_to_freq(struct libipw_device *ieee, u8 channel); 981 982 /* libipw_wx.c */ 983 int libipw_wx_get_scan(struct libipw_device *ieee, struct iw_request_info *info, 984 union iwreq_data *wrqu, char *key); 985 int libipw_wx_set_encode(struct libipw_device *ieee, 986 struct iw_request_info *info, union iwreq_data *wrqu, 987 char *key); 988 int libipw_wx_get_encode(struct libipw_device *ieee, 989 struct iw_request_info *info, union iwreq_data *wrqu, 990 char *key); 991 int libipw_wx_set_encodeext(struct libipw_device *ieee, 992 struct iw_request_info *info, 993 union iwreq_data *wrqu, char *extra); 994 int libipw_wx_get_encodeext(struct libipw_device *ieee, 995 struct iw_request_info *info, 996 union iwreq_data *wrqu, char *extra); 997 998 static inline void libipw_increment_scans(struct libipw_device *ieee) 999 { 1000 ieee->scans++; 1001 } 1002 1003 static inline int libipw_get_scans(struct libipw_device *ieee) 1004 { 1005 return ieee->scans; 1006 } 1007 1008 #endif /* LIBIPW_H */ 1009