1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <net/wireless.h> 26 #include "ieee80211_key.h" 27 #include "sta_info.h" 28 29 /* ieee80211.o internal definitions, etc. These are not included into 30 * low-level drivers. */ 31 32 #ifndef ETH_P_PAE 33 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ 34 #endif /* ETH_P_PAE */ 35 36 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08) 37 38 struct ieee80211_local; 39 40 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) 41 42 /* Maximum number of broadcast/multicast frames to buffer when some of the 43 * associated stations are using power saving. */ 44 #define AP_MAX_BC_BUFFER 128 45 46 /* Maximum number of frames buffered to all STAs, including multicast frames. 47 * Note: increasing this limit increases the potential memory requirement. Each 48 * frame can be up to about 2 kB long. */ 49 #define TOTAL_MAX_TX_BUFFER 512 50 51 /* Required encryption head and tailroom */ 52 #define IEEE80211_ENCRYPT_HEADROOM 8 53 #define IEEE80211_ENCRYPT_TAILROOM 12 54 55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 56 * reception of at least three fragmented frames. This limit can be increased 57 * by changing this define, at the cost of slower frame reassembly and 58 * increased memory use (about 2 kB of RAM per entry). */ 59 #define IEEE80211_FRAGMENT_MAX 4 60 61 struct ieee80211_fragment_entry { 62 unsigned long first_frag_time; 63 unsigned int seq; 64 unsigned int rx_queue; 65 unsigned int last_frag; 66 unsigned int extra_len; 67 struct sk_buff_head skb_list; 68 int ccmp; /* Whether fragments were encrypted with CCMP */ 69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 70 }; 71 72 73 struct ieee80211_sta_bss { 74 struct list_head list; 75 struct ieee80211_sta_bss *hnext; 76 atomic_t users; 77 78 u8 bssid[ETH_ALEN]; 79 u8 ssid[IEEE80211_MAX_SSID_LEN]; 80 size_t ssid_len; 81 u16 capability; /* host byte order */ 82 int hw_mode; 83 int channel; 84 int freq; 85 int rssi, signal, noise; 86 u8 *wpa_ie; 87 size_t wpa_ie_len; 88 u8 *rsn_ie; 89 size_t rsn_ie_len; 90 u8 *wmm_ie; 91 size_t wmm_ie_len; 92 #define IEEE80211_MAX_SUPP_RATES 32 93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 94 size_t supp_rates_len; 95 int beacon_int; 96 u64 timestamp; 97 98 int probe_resp; 99 unsigned long last_update; 100 101 /* during assocation, we save an ERP value from a probe response so 102 * that we can feed ERP info to the driver when handling the 103 * association completes. these fields probably won't be up-to-date 104 * otherwise, you probably don't want to use them. */ 105 int has_erp_value; 106 u8 erp_value; 107 }; 108 109 110 typedef enum { 111 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED 112 } ieee80211_txrx_result; 113 114 /* flags used in struct ieee80211_txrx_data.flags */ 115 /* whether the MSDU was fragmented */ 116 #define IEEE80211_TXRXD_FRAGMENTED BIT(0) 117 #define IEEE80211_TXRXD_TXUNICAST BIT(1) 118 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2) 119 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3) 120 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4) 121 /* frame is destined to interface currently processed (incl. multicast frames) */ 122 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5) 123 #define IEEE80211_TXRXD_TX_INJECTED BIT(6) 124 struct ieee80211_txrx_data { 125 struct sk_buff *skb; 126 struct net_device *dev; 127 struct ieee80211_local *local; 128 struct ieee80211_sub_if_data *sdata; 129 struct sta_info *sta; 130 u16 fc, ethertype; 131 struct ieee80211_key *key; 132 unsigned int flags; 133 union { 134 struct { 135 struct ieee80211_tx_control *control; 136 struct ieee80211_hw_mode *mode; 137 struct ieee80211_rate *rate; 138 /* use this rate (if set) for last fragment; rate can 139 * be set to lower rate for the first fragments, e.g., 140 * when using CTS protection with IEEE 802.11g. */ 141 struct ieee80211_rate *last_frag_rate; 142 int last_frag_hwrate; 143 144 /* Extra fragments (in addition to the first fragment 145 * in skb) */ 146 int num_extra_frag; 147 struct sk_buff **extra_frag; 148 } tx; 149 struct { 150 struct ieee80211_rx_status *status; 151 int sent_ps_buffered; 152 int queue; 153 int load; 154 u32 tkip_iv32; 155 u16 tkip_iv16; 156 } rx; 157 } u; 158 }; 159 160 /* flags used in struct ieee80211_tx_packet_data.flags */ 161 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0) 162 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1) 163 #define IEEE80211_TXPD_REQUEUE BIT(2) 164 /* Stored in sk_buff->cb */ 165 struct ieee80211_tx_packet_data { 166 int ifindex; 167 unsigned long jiffies; 168 unsigned int flags; 169 u8 queue; 170 }; 171 172 struct ieee80211_tx_stored_packet { 173 struct ieee80211_tx_control control; 174 struct sk_buff *skb; 175 int num_extra_frag; 176 struct sk_buff **extra_frag; 177 int last_frag_rateidx; 178 int last_frag_hwrate; 179 struct ieee80211_rate *last_frag_rate; 180 unsigned int last_frag_rate_ctrl_probe; 181 }; 182 183 typedef ieee80211_txrx_result (*ieee80211_tx_handler) 184 (struct ieee80211_txrx_data *tx); 185 186 typedef ieee80211_txrx_result (*ieee80211_rx_handler) 187 (struct ieee80211_txrx_data *rx); 188 189 struct ieee80211_if_ap { 190 u8 *beacon_head, *beacon_tail; 191 int beacon_head_len, beacon_tail_len; 192 193 struct list_head vlans; 194 195 u8 ssid[IEEE80211_MAX_SSID_LEN]; 196 size_t ssid_len; 197 198 /* yes, this looks ugly, but guarantees that we can later use 199 * bitmap_empty :) 200 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 201 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 202 atomic_t num_sta_ps; /* number of stations in PS mode */ 203 struct sk_buff_head ps_bc_buf; 204 int dtim_period, dtim_count; 205 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 206 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 207 int num_beacons; /* number of TXed beacon frames for this BSS */ 208 }; 209 210 struct ieee80211_if_wds { 211 u8 remote_addr[ETH_ALEN]; 212 struct sta_info *sta; 213 }; 214 215 struct ieee80211_if_vlan { 216 struct ieee80211_sub_if_data *ap; 217 struct list_head list; 218 }; 219 220 /* flags used in struct ieee80211_if_sta.flags */ 221 #define IEEE80211_STA_SSID_SET BIT(0) 222 #define IEEE80211_STA_BSSID_SET BIT(1) 223 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 224 #define IEEE80211_STA_AUTHENTICATED BIT(3) 225 #define IEEE80211_STA_ASSOCIATED BIT(4) 226 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 227 #define IEEE80211_STA_CREATE_IBSS BIT(6) 228 #define IEEE80211_STA_MIXED_CELL BIT(7) 229 #define IEEE80211_STA_WMM_ENABLED BIT(8) 230 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 231 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 232 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 233 struct ieee80211_if_sta { 234 enum { 235 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 236 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 237 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 238 } state; 239 struct timer_list timer; 240 struct work_struct work; 241 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 242 u8 ssid[IEEE80211_MAX_SSID_LEN]; 243 size_t ssid_len; 244 u16 aid; 245 u16 ap_capab, capab; 246 u8 *extra_ie; /* to be added to the end of AssocReq */ 247 size_t extra_ie_len; 248 249 /* The last AssocReq/Resp IEs */ 250 u8 *assocreq_ies, *assocresp_ies; 251 size_t assocreq_ies_len, assocresp_ies_len; 252 253 int auth_tries, assoc_tries; 254 255 unsigned int flags; 256 #define IEEE80211_STA_REQ_SCAN 0 257 #define IEEE80211_STA_REQ_AUTH 1 258 #define IEEE80211_STA_REQ_RUN 2 259 unsigned long request; 260 struct sk_buff_head skb_queue; 261 262 int key_management_enabled; 263 unsigned long last_probe; 264 265 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 266 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 267 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 268 unsigned int auth_algs; /* bitfield of allowed auth algs */ 269 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 270 int auth_transaction; 271 272 unsigned long ibss_join_req; 273 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 274 u32 supp_rates_bits; 275 276 int wmm_last_param_set; 277 }; 278 279 280 /* flags used in struct ieee80211_sub_if_data.flags */ 281 #define IEEE80211_SDATA_ALLMULTI BIT(0) 282 #define IEEE80211_SDATA_PROMISC BIT(1) 283 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */ 284 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon 285 * generator reports that there are no present stations that cannot support short 286 * preambles */ 287 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3) 288 #define IEEE80211_SDATA_USERSPACE_MLME BIT(4) 289 struct ieee80211_sub_if_data { 290 struct list_head list; 291 enum ieee80211_if_types type; 292 293 struct wireless_dev wdev; 294 295 /* keys */ 296 struct list_head key_list; 297 298 struct net_device *dev; 299 struct ieee80211_local *local; 300 301 unsigned int flags; 302 303 int drop_unencrypted; 304 int eapol; /* 0 = process EAPOL frames as normal data frames, 305 * 1 = send EAPOL frames through wlan#ap to hostapd 306 * (default) */ 307 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized 308 * port */ 309 310 u16 sequence; 311 312 /* Fragment table for host-based reassembly */ 313 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 314 unsigned int fragment_next; 315 316 #define NUM_DEFAULT_KEYS 4 317 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 318 struct ieee80211_key *default_key; 319 320 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 321 322 union { 323 struct ieee80211_if_ap ap; 324 struct ieee80211_if_wds wds; 325 struct ieee80211_if_vlan vlan; 326 struct ieee80211_if_sta sta; 327 } u; 328 int channel_use; 329 int channel_use_raw; 330 331 #ifdef CONFIG_MAC80211_DEBUGFS 332 struct dentry *debugfsdir; 333 union { 334 struct { 335 struct dentry *channel_use; 336 struct dentry *drop_unencrypted; 337 struct dentry *eapol; 338 struct dentry *ieee8021_x; 339 struct dentry *state; 340 struct dentry *bssid; 341 struct dentry *prev_bssid; 342 struct dentry *ssid_len; 343 struct dentry *aid; 344 struct dentry *ap_capab; 345 struct dentry *capab; 346 struct dentry *extra_ie_len; 347 struct dentry *auth_tries; 348 struct dentry *assoc_tries; 349 struct dentry *auth_algs; 350 struct dentry *auth_alg; 351 struct dentry *auth_transaction; 352 struct dentry *flags; 353 } sta; 354 struct { 355 struct dentry *channel_use; 356 struct dentry *drop_unencrypted; 357 struct dentry *eapol; 358 struct dentry *ieee8021_x; 359 struct dentry *num_sta_ps; 360 struct dentry *dtim_period; 361 struct dentry *dtim_count; 362 struct dentry *num_beacons; 363 struct dentry *force_unicast_rateidx; 364 struct dentry *max_ratectrl_rateidx; 365 struct dentry *num_buffered_multicast; 366 struct dentry *beacon_head_len; 367 struct dentry *beacon_tail_len; 368 } ap; 369 struct { 370 struct dentry *channel_use; 371 struct dentry *drop_unencrypted; 372 struct dentry *eapol; 373 struct dentry *ieee8021_x; 374 struct dentry *peer; 375 } wds; 376 struct { 377 struct dentry *channel_use; 378 struct dentry *drop_unencrypted; 379 struct dentry *eapol; 380 struct dentry *ieee8021_x; 381 } vlan; 382 struct { 383 struct dentry *mode; 384 } monitor; 385 struct dentry *default_key; 386 } debugfs; 387 #endif 388 }; 389 390 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 391 392 enum { 393 IEEE80211_RX_MSG = 1, 394 IEEE80211_TX_STATUS_MSG = 2, 395 }; 396 397 struct ieee80211_local { 398 /* embed the driver visible part. 399 * don't cast (use the static inlines below), but we keep 400 * it first anyway so they become a no-op */ 401 struct ieee80211_hw hw; 402 403 const struct ieee80211_ops *ops; 404 405 /* List of registered struct ieee80211_hw_mode */ 406 struct list_head modes_list; 407 408 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 409 int open_count; 410 int monitors; 411 unsigned int filter_flags; /* FIF_* */ 412 struct iw_statistics wstats; 413 u8 wstats_flags; 414 int tx_headroom; /* required headroom for hardware/radiotap */ 415 416 enum { 417 IEEE80211_DEV_UNINITIALIZED = 0, 418 IEEE80211_DEV_REGISTERED, 419 IEEE80211_DEV_UNREGISTERED, 420 } reg_state; 421 422 /* Tasklet and skb queue to process calls from IRQ mode. All frames 423 * added to skb_queue will be processed, but frames in 424 * skb_queue_unreliable may be dropped if the total length of these 425 * queues increases over the limit. */ 426 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 427 struct tasklet_struct tasklet; 428 struct sk_buff_head skb_queue; 429 struct sk_buff_head skb_queue_unreliable; 430 431 /* Station data structures */ 432 rwlock_t sta_lock; /* protects STA data structures */ 433 int num_sta; /* number of stations in sta_list */ 434 struct list_head sta_list; 435 struct sta_info *sta_hash[STA_HASH_SIZE]; 436 struct timer_list sta_cleanup; 437 438 unsigned long state[NUM_TX_DATA_QUEUES]; 439 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 440 struct tasklet_struct tx_pending_tasklet; 441 442 /* number of interfaces with corresponding IFF_ flags */ 443 atomic_t iff_allmultis, iff_promiscs; 444 445 struct rate_control_ref *rate_ctrl; 446 447 /* Supported and basic rate filters for different modes. These are 448 * pointers to -1 terminated lists and rates in 100 kbps units. */ 449 int *supp_rates[NUM_IEEE80211_MODES]; 450 int *basic_rates[NUM_IEEE80211_MODES]; 451 452 int rts_threshold; 453 int fragmentation_threshold; 454 int short_retry_limit; /* dot11ShortRetryLimit */ 455 int long_retry_limit; /* dot11LongRetryLimit */ 456 457 struct crypto_blkcipher *wep_tx_tfm; 458 struct crypto_blkcipher *wep_rx_tfm; 459 u32 wep_iv; 460 461 int bridge_packets; /* bridge packets between associated stations and 462 * deliver multicast frames both back to wireless 463 * media and to the local net stack */ 464 465 ieee80211_rx_handler *rx_pre_handlers; 466 ieee80211_rx_handler *rx_handlers; 467 ieee80211_tx_handler *tx_handlers; 468 469 struct list_head interfaces; 470 471 int sta_scanning; 472 int scan_channel_idx; 473 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 474 unsigned long last_scan_completed; 475 struct delayed_work scan_work; 476 struct net_device *scan_dev; 477 struct ieee80211_channel *oper_channel, *scan_channel; 478 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 479 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 480 size_t scan_ssid_len; 481 struct list_head sta_bss_list; 482 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 483 spinlock_t sta_bss_lock; 484 #define IEEE80211_SCAN_MATCH_SSID BIT(0) 485 #define IEEE80211_SCAN_WPA_ONLY BIT(1) 486 #define IEEE80211_SCAN_EXTRA_INFO BIT(2) 487 int scan_flags; 488 489 /* SNMP counters */ 490 /* dot11CountersTable */ 491 u32 dot11TransmittedFragmentCount; 492 u32 dot11MulticastTransmittedFrameCount; 493 u32 dot11FailedCount; 494 u32 dot11RetryCount; 495 u32 dot11MultipleRetryCount; 496 u32 dot11FrameDuplicateCount; 497 u32 dot11ReceivedFragmentCount; 498 u32 dot11MulticastReceivedFrameCount; 499 u32 dot11TransmittedFrameCount; 500 u32 dot11WEPUndecryptableCount; 501 502 #ifdef CONFIG_MAC80211_LEDS 503 int tx_led_counter, rx_led_counter; 504 struct led_trigger *tx_led, *rx_led, *assoc_led; 505 char tx_led_name[32], rx_led_name[32], assoc_led_name[32]; 506 #endif 507 508 u32 channel_use; 509 u32 channel_use_raw; 510 511 #ifdef CONFIG_MAC80211_DEBUGFS 512 struct work_struct sta_debugfs_add; 513 #endif 514 515 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 516 /* TX/RX handler statistics */ 517 unsigned int tx_handlers_drop; 518 unsigned int tx_handlers_queued; 519 unsigned int tx_handlers_drop_unencrypted; 520 unsigned int tx_handlers_drop_fragment; 521 unsigned int tx_handlers_drop_wep; 522 unsigned int tx_handlers_drop_not_assoc; 523 unsigned int tx_handlers_drop_unauth_port; 524 unsigned int rx_handlers_drop; 525 unsigned int rx_handlers_queued; 526 unsigned int rx_handlers_drop_nullfunc; 527 unsigned int rx_handlers_drop_defrag; 528 unsigned int rx_handlers_drop_short; 529 unsigned int rx_handlers_drop_passive_scan; 530 unsigned int tx_expand_skb_head; 531 unsigned int tx_expand_skb_head_cloned; 532 unsigned int rx_expand_skb_head; 533 unsigned int rx_expand_skb_head2; 534 unsigned int rx_handlers_fragments; 535 unsigned int tx_status_drop; 536 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 537 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 538 #define I802_DEBUG_INC(c) (c)++ 539 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 540 #define I802_DEBUG_INC(c) do { } while (0) 541 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 542 543 544 int total_ps_buffered; /* total number of all buffered unicast and 545 * multicast packets for power saving stations 546 */ 547 int wifi_wme_noack_test; 548 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 549 550 unsigned int enabled_modes; /* bitfield of allowed modes; 551 * (1 << MODE_*) */ 552 unsigned int hw_modes; /* bitfield of supported hardware modes; 553 * (1 << MODE_*) */ 554 555 #ifdef CONFIG_MAC80211_DEBUGFS 556 struct local_debugfsdentries { 557 struct dentry *channel; 558 struct dentry *frequency; 559 struct dentry *antenna_sel_tx; 560 struct dentry *antenna_sel_rx; 561 struct dentry *bridge_packets; 562 struct dentry *rts_threshold; 563 struct dentry *fragmentation_threshold; 564 struct dentry *short_retry_limit; 565 struct dentry *long_retry_limit; 566 struct dentry *total_ps_buffered; 567 struct dentry *mode; 568 struct dentry *wep_iv; 569 struct dentry *modes; 570 struct dentry *statistics; 571 struct local_debugfsdentries_statsdentries { 572 struct dentry *transmitted_fragment_count; 573 struct dentry *multicast_transmitted_frame_count; 574 struct dentry *failed_count; 575 struct dentry *retry_count; 576 struct dentry *multiple_retry_count; 577 struct dentry *frame_duplicate_count; 578 struct dentry *received_fragment_count; 579 struct dentry *multicast_received_frame_count; 580 struct dentry *transmitted_frame_count; 581 struct dentry *wep_undecryptable_count; 582 struct dentry *num_scans; 583 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 584 struct dentry *tx_handlers_drop; 585 struct dentry *tx_handlers_queued; 586 struct dentry *tx_handlers_drop_unencrypted; 587 struct dentry *tx_handlers_drop_fragment; 588 struct dentry *tx_handlers_drop_wep; 589 struct dentry *tx_handlers_drop_not_assoc; 590 struct dentry *tx_handlers_drop_unauth_port; 591 struct dentry *rx_handlers_drop; 592 struct dentry *rx_handlers_queued; 593 struct dentry *rx_handlers_drop_nullfunc; 594 struct dentry *rx_handlers_drop_defrag; 595 struct dentry *rx_handlers_drop_short; 596 struct dentry *rx_handlers_drop_passive_scan; 597 struct dentry *tx_expand_skb_head; 598 struct dentry *tx_expand_skb_head_cloned; 599 struct dentry *rx_expand_skb_head; 600 struct dentry *rx_expand_skb_head2; 601 struct dentry *rx_handlers_fragments; 602 struct dentry *tx_status_drop; 603 struct dentry *wme_tx_queue; 604 struct dentry *wme_rx_queue; 605 #endif 606 struct dentry *dot11ACKFailureCount; 607 struct dentry *dot11RTSFailureCount; 608 struct dentry *dot11FCSErrorCount; 609 struct dentry *dot11RTSSuccessCount; 610 } stats; 611 struct dentry *stations; 612 struct dentry *keys; 613 } debugfs; 614 #endif 615 }; 616 617 static inline struct ieee80211_local *hw_to_local( 618 struct ieee80211_hw *hw) 619 { 620 return container_of(hw, struct ieee80211_local, hw); 621 } 622 623 static inline struct ieee80211_hw *local_to_hw( 624 struct ieee80211_local *local) 625 { 626 return &local->hw; 627 } 628 629 enum ieee80211_link_state_t { 630 IEEE80211_LINK_STATE_XOFF = 0, 631 IEEE80211_LINK_STATE_PENDING, 632 }; 633 634 struct sta_attribute { 635 struct attribute attr; 636 ssize_t (*show)(const struct sta_info *, char *buf); 637 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 638 }; 639 640 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) 641 { 642 /* 643 * This format has been mandated by the IEEE specifications, 644 * so this line may not be changed to use the __set_bit() format. 645 */ 646 bss->tim[aid / 8] |= (1 << (aid % 8)); 647 } 648 649 static inline void bss_tim_set(struct ieee80211_local *local, 650 struct ieee80211_if_ap *bss, u16 aid) 651 { 652 read_lock_bh(&local->sta_lock); 653 __bss_tim_set(bss, aid); 654 read_unlock_bh(&local->sta_lock); 655 } 656 657 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid) 658 { 659 /* 660 * This format has been mandated by the IEEE specifications, 661 * so this line may not be changed to use the __clear_bit() format. 662 */ 663 bss->tim[aid / 8] &= ~(1 << (aid % 8)); 664 } 665 666 static inline void bss_tim_clear(struct ieee80211_local *local, 667 struct ieee80211_if_ap *bss, u16 aid) 668 { 669 read_lock_bh(&local->sta_lock); 670 __bss_tim_clear(bss, aid); 671 read_unlock_bh(&local->sta_lock); 672 } 673 674 /** 675 * ieee80211_is_erp_rate - Check if a rate is an ERP rate 676 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 677 * @rate: Transmission rate to check, in 100 kbps 678 * 679 * Check if a given rate is an Extended Rate PHY (ERP) rate. 680 */ 681 static inline int ieee80211_is_erp_rate(int phymode, int rate) 682 { 683 if (phymode == MODE_IEEE80211G) { 684 if (rate != 10 && rate != 20 && 685 rate != 55 && rate != 110) 686 return 1; 687 } 688 return 0; 689 } 690 691 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 692 { 693 return compare_ether_addr(raddr, addr) == 0 || 694 is_broadcast_ether_addr(raddr); 695 } 696 697 698 /* ieee80211.c */ 699 int ieee80211_hw_config(struct ieee80211_local *local); 700 int ieee80211_if_config(struct net_device *dev); 701 int ieee80211_if_config_beacon(struct net_device *dev); 702 void ieee80211_prepare_rates(struct ieee80211_local *local, 703 struct ieee80211_hw_mode *mode); 704 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 705 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 706 void ieee80211_if_setup(struct net_device *dev); 707 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local, 708 int phymode, int hwrate); 709 710 /* ieee80211_ioctl.c */ 711 extern const struct iw_handler_def ieee80211_iw_handler_def; 712 713 714 /* Least common multiple of the used rates (in 100 kbps). This is used to 715 * calculate rate_inv values for each rate so that only integers are needed. */ 716 #define CHAN_UTIL_RATE_LCM 95040 717 /* 1 usec is 1/8 * (95040/10) = 1188 */ 718 #define CHAN_UTIL_PER_USEC 1188 719 /* Amount of bits to shift the result right to scale the total utilization 720 * to values that will not wrap around 32-bit integers. */ 721 #define CHAN_UTIL_SHIFT 9 722 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 723 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 724 * raw value with about 23 should give utilization in 10th of a percentage 725 * (1/1000). However, utilization is only estimated and not all intervals 726 * between frames etc. are calculated. 18 seems to give numbers that are closer 727 * to the real maximum. */ 728 #define CHAN_UTIL_PER_10MS 18 729 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 730 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 731 732 733 /* ieee80211_ioctl.c */ 734 int ieee80211_set_compression(struct ieee80211_local *local, 735 struct net_device *dev, struct sta_info *sta); 736 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 737 /* ieee80211_sta.c */ 738 void ieee80211_sta_timer(unsigned long data); 739 void ieee80211_sta_work(struct work_struct *work); 740 void ieee80211_sta_scan_work(struct work_struct *work); 741 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 742 struct ieee80211_rx_status *rx_status); 743 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 744 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 745 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 746 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 747 void ieee80211_sta_req_auth(struct net_device *dev, 748 struct ieee80211_if_sta *ifsta); 749 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 750 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, 751 struct ieee80211_rx_status *rx_status); 752 void ieee80211_rx_bss_list_init(struct net_device *dev); 753 void ieee80211_rx_bss_list_deinit(struct net_device *dev); 754 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 755 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 756 struct sk_buff *skb, u8 *bssid, 757 u8 *addr); 758 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 759 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 760 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes); 761 void ieee80211_reset_erp_info(struct net_device *dev); 762 763 /* ieee80211_iface.c */ 764 int ieee80211_if_add(struct net_device *dev, const char *name, 765 struct net_device **new_dev, int type); 766 void ieee80211_if_set_type(struct net_device *dev, int type); 767 void ieee80211_if_reinit(struct net_device *dev); 768 void __ieee80211_if_del(struct ieee80211_local *local, 769 struct ieee80211_sub_if_data *sdata); 770 int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 771 void ieee80211_if_free(struct net_device *dev); 772 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 773 774 /* regdomain.c */ 775 void ieee80211_regdomain_init(void); 776 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); 777 778 /* rx handling */ 779 extern ieee80211_rx_handler ieee80211_rx_pre_handlers[]; 780 extern ieee80211_rx_handler ieee80211_rx_handlers[]; 781 782 /* tx handling */ 783 extern ieee80211_tx_handler ieee80211_tx_handlers[]; 784 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 785 void ieee80211_tx_pending(unsigned long data); 786 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 787 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 788 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 789 790 /* utility functions/constants */ 791 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 792 extern const unsigned char rfc1042_header[6]; 793 extern const unsigned char bridge_tunnel_header[6]; 794 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len); 795 int ieee80211_is_eapol(const struct sk_buff *skb); 796 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 797 int rate, int erp, int short_preamble); 798 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx, 799 struct ieee80211_hdr *hdr); 800 801 #endif /* IEEE80211_I_H */ 802