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 libipw_priv(struct net_device * dev)898 static inline void *libipw_priv(struct net_device *dev) 899 { 900 return ((struct libipw_device *)netdev_priv(dev))->priv; 901 } 902 libipw_is_valid_mode(struct libipw_device * ieee,int mode)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 libipw_get_hdrlen(u16 fc)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 libipw_get_payload(struct ieee80211_hdr * hdr)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 libipw_is_ofdm_rate(u8 rate)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 libipw_is_cck_rate(u8 rate)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 int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb, 1015 struct libipw_rx_stats *rx_stats); 1016 /* make sure to set stats->len */ 1017 void libipw_rx_mgt(struct libipw_device *ieee, struct libipw_hdr_4addr *header, 1018 struct libipw_rx_stats *stats); 1019 1020 /* libipw_geo.c */ 1021 const struct libipw_geo *libipw_get_geo(struct libipw_device *ieee); 1022 void libipw_set_geo(struct libipw_device *ieee, const struct libipw_geo *geo); 1023 1024 int libipw_is_valid_channel(struct libipw_device *ieee, u8 channel); 1025 int libipw_channel_to_index(struct libipw_device *ieee, u8 channel); 1026 u8 libipw_freq_to_channel(struct libipw_device *ieee, u32 freq); 1027 u8 libipw_get_channel_flags(struct libipw_device *ieee, u8 channel); 1028 const struct libipw_channel *libipw_get_channel(struct libipw_device *ieee, 1029 u8 channel); 1030 u32 libipw_channel_to_freq(struct libipw_device *ieee, u8 channel); 1031 1032 /* libipw_wx.c */ 1033 int libipw_wx_get_scan(struct libipw_device *ieee, struct iw_request_info *info, 1034 union iwreq_data *wrqu, char *key); 1035 int libipw_wx_set_encode(struct libipw_device *ieee, 1036 struct iw_request_info *info, union iwreq_data *wrqu, 1037 char *key); 1038 int libipw_wx_get_encode(struct libipw_device *ieee, 1039 struct iw_request_info *info, union iwreq_data *wrqu, 1040 char *key); 1041 int libipw_wx_set_encodeext(struct libipw_device *ieee, 1042 struct iw_request_info *info, 1043 union iwreq_data *wrqu, char *extra); 1044 int libipw_wx_get_encodeext(struct libipw_device *ieee, 1045 struct iw_request_info *info, 1046 union iwreq_data *wrqu, char *extra); 1047 libipw_increment_scans(struct libipw_device * ieee)1048 static inline void libipw_increment_scans(struct libipw_device *ieee) 1049 { 1050 ieee->scans++; 1051 } 1052 libipw_get_scans(struct libipw_device * ieee)1053 static inline int libipw_get_scans(struct libipw_device *ieee) 1054 { 1055 return ieee->scans; 1056 } 1057 1058 struct libipw_crypt_data { 1059 struct list_head list; /* delayed deletion list */ 1060 const struct libipw_crypto_ops *ops; 1061 void *priv; 1062 atomic_t refcnt; 1063 }; 1064 1065 int libipw_crypt_info_init(struct libipw_crypt_info *info, char *name, 1066 spinlock_t *lock); 1067 void libipw_crypt_info_free(struct libipw_crypt_info *info); 1068 int libipw_register_crypto_ops(const struct libipw_crypto_ops *ops); 1069 int libipw_unregister_crypto_ops(const struct libipw_crypto_ops *ops); 1070 const struct libipw_crypto_ops *libipw_get_crypto_ops(const char *name); 1071 void libipw_crypt_delayed_deinit(struct libipw_crypt_info *info, 1072 struct libipw_crypt_data **crypt); 1073 1074 /* must be called in the listed order */ 1075 int libipw_crypto_init(void); 1076 int libipw_crypto_ccmp_init(void); 1077 int libipw_crypto_tkip_init(void); 1078 int libipw_crypto_wep_init(void); 1079 1080 void libipw_crypto_wep_exit(void); 1081 void libipw_crypto_tkip_exit(void); 1082 void libipw_crypto_ccmp_exit(void); 1083 void libipw_crypto_exit(void); 1084 1085 1086 int ipw_wx_set_spy(struct net_device *dev, struct iw_request_info *info, 1087 union iwreq_data *wrqu, char *extra); 1088 int ipw_wx_get_spy(struct net_device *dev, struct iw_request_info *info, 1089 union iwreq_data *wrqu, char *extra); 1090 int ipw_wx_set_thrspy(struct net_device *dev, struct iw_request_info *info, 1091 union iwreq_data *wrqu, char *extra); 1092 int ipw_wx_get_thrspy(struct net_device *dev, struct iw_request_info *info, 1093 union iwreq_data *wrqu, char *extra); 1094 void libipw_spy_update(struct net_device *dev, unsigned char *address, 1095 struct iw_quality *wstats); 1096 1097 #endif /* LIBIPW_H */ 1098