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 <net/wireless.h> 25 #include "ieee80211_key.h" 26 #include "sta_info.h" 27 28 /* ieee80211.o internal definitions, etc. These are not included into 29 * low-level drivers. */ 30 31 #ifndef ETH_P_PAE 32 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ 33 #endif /* ETH_P_PAE */ 34 35 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08) 36 37 struct ieee80211_local; 38 39 #define BIT(x) (1 << (x)) 40 41 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 12 55 56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 57 * reception of at least three fragmented frames. This limit can be increased 58 * by changing this define, at the cost of slower frame reassembly and 59 * increased memory use (about 2 kB of RAM per entry). */ 60 #define IEEE80211_FRAGMENT_MAX 4 61 62 struct ieee80211_fragment_entry { 63 unsigned long first_frag_time; 64 unsigned int seq; 65 unsigned int rx_queue; 66 unsigned int last_frag; 67 unsigned int extra_len; 68 struct sk_buff_head skb_list; 69 int ccmp; /* Whether fragments were encrypted with CCMP */ 70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 71 }; 72 73 74 struct ieee80211_sta_bss { 75 struct list_head list; 76 struct ieee80211_sta_bss *hnext; 77 atomic_t users; 78 79 u8 bssid[ETH_ALEN]; 80 u8 ssid[IEEE80211_MAX_SSID_LEN]; 81 size_t ssid_len; 82 u16 capability; /* host byte order */ 83 int hw_mode; 84 int channel; 85 int freq; 86 int rssi, signal, noise; 87 u8 *wpa_ie; 88 size_t wpa_ie_len; 89 u8 *rsn_ie; 90 size_t rsn_ie_len; 91 u8 *wmm_ie; 92 size_t wmm_ie_len; 93 #define IEEE80211_MAX_SUPP_RATES 32 94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 95 size_t supp_rates_len; 96 int beacon_int; 97 u64 timestamp; 98 99 int probe_resp; 100 unsigned long last_update; 101 102 /* during assocation, we save an ERP value from a probe response so 103 * that we can feed ERP info to the driver when handling the 104 * association completes. these fields probably won't be up-to-date 105 * otherwise, you probably don't want to use them. */ 106 int has_erp_value; 107 u8 erp_value; 108 }; 109 110 111 typedef enum { 112 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED 113 } ieee80211_txrx_result; 114 115 struct ieee80211_txrx_data { 116 struct sk_buff *skb; 117 struct net_device *dev; 118 struct ieee80211_local *local; 119 struct ieee80211_sub_if_data *sdata; 120 struct sta_info *sta; 121 u16 fc, ethertype; 122 struct ieee80211_key *key; 123 unsigned int fragmented:1; /* whether the MSDU was fragmented */ 124 union { 125 struct { 126 struct ieee80211_tx_control *control; 127 unsigned int unicast:1; 128 unsigned int ps_buffered:1; 129 unsigned int short_preamble:1; 130 unsigned int probe_last_frag:1; 131 struct ieee80211_hw_mode *mode; 132 struct ieee80211_rate *rate; 133 /* use this rate (if set) for last fragment; rate can 134 * be set to lower rate for the first fragments, e.g., 135 * when using CTS protection with IEEE 802.11g. */ 136 struct ieee80211_rate *last_frag_rate; 137 int last_frag_hwrate; 138 int mgmt_interface; 139 140 /* Extra fragments (in addition to the first fragment 141 * in skb) */ 142 int num_extra_frag; 143 struct sk_buff **extra_frag; 144 } tx; 145 struct { 146 struct ieee80211_rx_status *status; 147 int sent_ps_buffered; 148 int queue; 149 int load; 150 unsigned int in_scan:1; 151 /* frame is destined to interface currently processed 152 * (including multicast frames) */ 153 unsigned int ra_match:1; 154 } rx; 155 } u; 156 }; 157 158 /* Stored in sk_buff->cb */ 159 struct ieee80211_tx_packet_data { 160 int ifindex; 161 unsigned long jiffies; 162 unsigned int req_tx_status:1; 163 unsigned int do_not_encrypt:1; 164 unsigned int requeue:1; 165 unsigned int mgmt_iface:1; 166 unsigned int queue:4; 167 }; 168 169 struct ieee80211_tx_stored_packet { 170 struct ieee80211_tx_control control; 171 struct sk_buff *skb; 172 int num_extra_frag; 173 struct sk_buff **extra_frag; 174 int last_frag_rateidx; 175 int last_frag_hwrate; 176 struct ieee80211_rate *last_frag_rate; 177 unsigned int last_frag_rate_ctrl_probe:1; 178 }; 179 180 typedef ieee80211_txrx_result (*ieee80211_tx_handler) 181 (struct ieee80211_txrx_data *tx); 182 183 typedef ieee80211_txrx_result (*ieee80211_rx_handler) 184 (struct ieee80211_txrx_data *rx); 185 186 struct ieee80211_if_ap { 187 u8 *beacon_head, *beacon_tail; 188 int beacon_head_len, beacon_tail_len; 189 190 u8 ssid[IEEE80211_MAX_SSID_LEN]; 191 size_t ssid_len; 192 u8 *generic_elem; 193 size_t generic_elem_len; 194 195 /* yes, this looks ugly, but guarantees that we can later use 196 * bitmap_empty :) 197 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 198 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 199 atomic_t num_sta_ps; /* number of stations in PS mode */ 200 struct sk_buff_head ps_bc_buf; 201 int dtim_period, dtim_count; 202 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 203 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 204 int num_beacons; /* number of TXed beacon frames for this BSS */ 205 }; 206 207 struct ieee80211_if_wds { 208 u8 remote_addr[ETH_ALEN]; 209 struct sta_info *sta; 210 }; 211 212 struct ieee80211_if_vlan { 213 u8 id; 214 }; 215 216 struct ieee80211_if_sta { 217 enum { 218 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 219 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 220 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 221 } state; 222 struct timer_list timer; 223 struct work_struct work; 224 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 225 u8 ssid[IEEE80211_MAX_SSID_LEN]; 226 size_t ssid_len; 227 u16 aid; 228 u16 ap_capab, capab; 229 u8 *extra_ie; /* to be added to the end of AssocReq */ 230 size_t extra_ie_len; 231 232 /* The last AssocReq/Resp IEs */ 233 u8 *assocreq_ies, *assocresp_ies; 234 size_t assocreq_ies_len, assocresp_ies_len; 235 236 int auth_tries, assoc_tries; 237 238 unsigned int ssid_set:1; 239 unsigned int bssid_set:1; 240 unsigned int prev_bssid_set:1; 241 unsigned int authenticated:1; 242 unsigned int associated:1; 243 unsigned int probereq_poll:1; 244 unsigned int create_ibss:1; 245 unsigned int mixed_cell:1; 246 unsigned int wmm_enabled:1; 247 unsigned int auto_ssid_sel:1; 248 unsigned int auto_bssid_sel:1; 249 unsigned int auto_channel_sel:1; 250 #define IEEE80211_STA_REQ_SCAN 0 251 #define IEEE80211_STA_REQ_AUTH 1 252 #define IEEE80211_STA_REQ_RUN 2 253 unsigned long request; 254 struct sk_buff_head skb_queue; 255 256 int key_mgmt; 257 unsigned long last_probe; 258 259 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 260 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 261 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 262 unsigned int auth_algs; /* bitfield of allowed auth algs */ 263 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 264 int auth_transaction; 265 266 unsigned long ibss_join_req; 267 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 268 u32 supp_rates_bits; 269 270 int wmm_last_param_set; 271 }; 272 273 274 struct ieee80211_sub_if_data { 275 struct list_head list; 276 unsigned int type; 277 278 struct wireless_dev wdev; 279 280 struct net_device *dev; 281 struct ieee80211_local *local; 282 283 int mc_count; 284 unsigned int allmulti:1; 285 unsigned int promisc:1; 286 unsigned int use_protection:1; /* CTS protect ERP frames */ 287 288 struct net_device_stats stats; 289 int drop_unencrypted; 290 int eapol; /* 0 = process EAPOL frames as normal data frames, 291 * 1 = send EAPOL frames through wlan#ap to hostapd 292 * (default) */ 293 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized 294 * port */ 295 296 u16 sequence; 297 298 /* Fragment table for host-based reassembly */ 299 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 300 unsigned int fragment_next; 301 302 #define NUM_DEFAULT_KEYS 4 303 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 304 struct ieee80211_key *default_key; 305 306 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 307 308 union { 309 struct ieee80211_if_ap ap; 310 struct ieee80211_if_wds wds; 311 struct ieee80211_if_vlan vlan; 312 struct ieee80211_if_sta sta; 313 } u; 314 int channel_use; 315 int channel_use_raw; 316 317 #ifdef CONFIG_MAC80211_DEBUGFS 318 struct dentry *debugfsdir; 319 union { 320 struct { 321 struct dentry *channel_use; 322 struct dentry *drop_unencrypted; 323 struct dentry *eapol; 324 struct dentry *ieee8021_x; 325 struct dentry *state; 326 struct dentry *bssid; 327 struct dentry *prev_bssid; 328 struct dentry *ssid_len; 329 struct dentry *aid; 330 struct dentry *ap_capab; 331 struct dentry *capab; 332 struct dentry *extra_ie_len; 333 struct dentry *auth_tries; 334 struct dentry *assoc_tries; 335 struct dentry *auth_algs; 336 struct dentry *auth_alg; 337 struct dentry *auth_transaction; 338 struct dentry *flags; 339 } sta; 340 struct { 341 struct dentry *channel_use; 342 struct dentry *drop_unencrypted; 343 struct dentry *eapol; 344 struct dentry *ieee8021_x; 345 struct dentry *num_sta_ps; 346 struct dentry *dtim_period; 347 struct dentry *dtim_count; 348 struct dentry *num_beacons; 349 struct dentry *force_unicast_rateidx; 350 struct dentry *max_ratectrl_rateidx; 351 struct dentry *num_buffered_multicast; 352 struct dentry *beacon_head_len; 353 struct dentry *beacon_tail_len; 354 } ap; 355 struct { 356 struct dentry *channel_use; 357 struct dentry *drop_unencrypted; 358 struct dentry *eapol; 359 struct dentry *ieee8021_x; 360 struct dentry *peer; 361 } wds; 362 struct { 363 struct dentry *channel_use; 364 struct dentry *drop_unencrypted; 365 struct dentry *eapol; 366 struct dentry *ieee8021_x; 367 struct dentry *vlan_id; 368 } vlan; 369 struct { 370 struct dentry *mode; 371 } monitor; 372 struct dentry *default_key; 373 } debugfs; 374 #endif 375 }; 376 377 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 378 379 enum { 380 IEEE80211_RX_MSG = 1, 381 IEEE80211_TX_STATUS_MSG = 2, 382 }; 383 384 struct ieee80211_local { 385 /* embed the driver visible part. 386 * don't cast (use the static inlines below), but we keep 387 * it first anyway so they become a no-op */ 388 struct ieee80211_hw hw; 389 390 const struct ieee80211_ops *ops; 391 392 /* List of registered struct ieee80211_hw_mode */ 393 struct list_head modes_list; 394 395 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 396 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */ 397 int open_count; 398 int monitors; 399 struct iw_statistics wstats; 400 u8 wstats_flags; 401 int tx_headroom; /* required headroom for hardware/radiotap */ 402 403 enum { 404 IEEE80211_DEV_UNINITIALIZED = 0, 405 IEEE80211_DEV_REGISTERED, 406 IEEE80211_DEV_UNREGISTERED, 407 } reg_state; 408 409 /* Tasklet and skb queue to process calls from IRQ mode. All frames 410 * added to skb_queue will be processed, but frames in 411 * skb_queue_unreliable may be dropped if the total length of these 412 * queues increases over the limit. */ 413 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 414 struct tasklet_struct tasklet; 415 struct sk_buff_head skb_queue; 416 struct sk_buff_head skb_queue_unreliable; 417 418 /* Station data structures */ 419 spinlock_t sta_lock; /* mutex for STA data structures */ 420 int num_sta; /* number of stations in sta_list */ 421 struct list_head sta_list; 422 struct list_head deleted_sta_list; 423 struct sta_info *sta_hash[STA_HASH_SIZE]; 424 struct timer_list sta_cleanup; 425 426 unsigned long state[NUM_TX_DATA_QUEUES]; 427 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 428 struct tasklet_struct tx_pending_tasklet; 429 430 int mc_count; /* total count of multicast entries in all interfaces */ 431 int iff_allmultis, iff_promiscs; 432 /* number of interfaces with corresponding IFF_ flags */ 433 434 struct rate_control_ref *rate_ctrl; 435 436 int next_mode; /* MODE_IEEE80211* 437 * The mode preference for next channel change. This is 438 * used to select .11g vs. .11b channels (or 4.9 GHz vs. 439 * .11a) when the channel number is not unique. */ 440 441 /* Supported and basic rate filters for different modes. These are 442 * pointers to -1 terminated lists and rates in 100 kbps units. */ 443 int *supp_rates[NUM_IEEE80211_MODES]; 444 int *basic_rates[NUM_IEEE80211_MODES]; 445 446 int rts_threshold; 447 int fragmentation_threshold; 448 int short_retry_limit; /* dot11ShortRetryLimit */ 449 int long_retry_limit; /* dot11LongRetryLimit */ 450 int short_preamble; /* use short preamble with IEEE 802.11b */ 451 452 struct crypto_blkcipher *wep_tx_tfm; 453 struct crypto_blkcipher *wep_rx_tfm; 454 u32 wep_iv; 455 int key_tx_rx_threshold; /* number of times any key can be used in TX 456 * or RX before generating a rekey 457 * notification; 0 = notification disabled. */ 458 459 int bridge_packets; /* bridge packets between associated stations and 460 * deliver multicast frames both back to wireless 461 * media and to the local net stack */ 462 463 ieee80211_rx_handler *rx_pre_handlers; 464 ieee80211_rx_handler *rx_handlers; 465 ieee80211_tx_handler *tx_handlers; 466 467 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under 468 * sta_bss_lock or sta_lock. */ 469 struct list_head sub_if_list; 470 int sta_scanning; 471 int scan_channel_idx; 472 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 473 unsigned long last_scan_completed; 474 struct delayed_work scan_work; 475 struct net_device *scan_dev; 476 struct ieee80211_channel *oper_channel, *scan_channel; 477 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 478 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 479 size_t scan_ssid_len; 480 struct list_head sta_bss_list; 481 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 482 spinlock_t sta_bss_lock; 483 #define IEEE80211_SCAN_MATCH_SSID BIT(0) 484 #define IEEE80211_SCAN_WPA_ONLY BIT(1) 485 #define IEEE80211_SCAN_EXTRA_INFO BIT(2) 486 int scan_flags; 487 488 /* SNMP counters */ 489 /* dot11CountersTable */ 490 u32 dot11TransmittedFragmentCount; 491 u32 dot11MulticastTransmittedFrameCount; 492 u32 dot11FailedCount; 493 u32 dot11RetryCount; 494 u32 dot11MultipleRetryCount; 495 u32 dot11FrameDuplicateCount; 496 u32 dot11ReceivedFragmentCount; 497 u32 dot11MulticastReceivedFrameCount; 498 u32 dot11TransmittedFrameCount; 499 u32 dot11WEPUndecryptableCount; 500 501 #ifdef CONFIG_MAC80211_LEDS 502 int tx_led_counter, rx_led_counter; 503 struct led_trigger *tx_led, *rx_led; 504 char tx_led_name[32], rx_led_name[32]; 505 #endif 506 507 u32 channel_use; 508 u32 channel_use_raw; 509 u32 stat_time; 510 struct timer_list stat_timer; 511 512 #ifdef CONFIG_MAC80211_DEBUGFS 513 struct work_struct sta_debugfs_add; 514 #endif 515 516 enum { 517 STA_ANTENNA_SEL_AUTO = 0, 518 STA_ANTENNA_SEL_SW_CTRL = 1, 519 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2 520 } sta_antenna_sel; 521 522 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 523 /* TX/RX handler statistics */ 524 unsigned int tx_handlers_drop; 525 unsigned int tx_handlers_queued; 526 unsigned int tx_handlers_drop_unencrypted; 527 unsigned int tx_handlers_drop_fragment; 528 unsigned int tx_handlers_drop_wep; 529 unsigned int tx_handlers_drop_not_assoc; 530 unsigned int tx_handlers_drop_unauth_port; 531 unsigned int rx_handlers_drop; 532 unsigned int rx_handlers_queued; 533 unsigned int rx_handlers_drop_nullfunc; 534 unsigned int rx_handlers_drop_defrag; 535 unsigned int rx_handlers_drop_short; 536 unsigned int rx_handlers_drop_passive_scan; 537 unsigned int tx_expand_skb_head; 538 unsigned int tx_expand_skb_head_cloned; 539 unsigned int rx_expand_skb_head; 540 unsigned int rx_expand_skb_head2; 541 unsigned int rx_handlers_fragments; 542 unsigned int tx_status_drop; 543 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 544 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 545 #define I802_DEBUG_INC(c) (c)++ 546 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 547 #define I802_DEBUG_INC(c) do { } while (0) 548 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 549 550 551 int default_wep_only; /* only default WEP keys are used with this 552 * interface; this is used to decide when hwaccel 553 * can be used with default keys */ 554 int total_ps_buffered; /* total number of all buffered unicast and 555 * multicast packets for power saving stations 556 */ 557 int allow_broadcast_always; /* whether to allow TX of broadcast frames 558 * even when there are no associated STAs 559 */ 560 561 int wifi_wme_noack_test; 562 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 563 564 unsigned int enabled_modes; /* bitfield of allowed modes; 565 * (1 << MODE_*) */ 566 unsigned int hw_modes; /* bitfield of supported hardware modes; 567 * (1 << MODE_*) */ 568 569 int user_space_mlme; 570 571 #ifdef CONFIG_MAC80211_DEBUGFS 572 struct local_debugfsdentries { 573 struct dentry *channel; 574 struct dentry *frequency; 575 struct dentry *radar_detect; 576 struct dentry *antenna_sel_tx; 577 struct dentry *antenna_sel_rx; 578 struct dentry *bridge_packets; 579 struct dentry *key_tx_rx_threshold; 580 struct dentry *rts_threshold; 581 struct dentry *fragmentation_threshold; 582 struct dentry *short_retry_limit; 583 struct dentry *long_retry_limit; 584 struct dentry *total_ps_buffered; 585 struct dentry *mode; 586 struct dentry *wep_iv; 587 struct dentry *tx_power_reduction; 588 struct dentry *modes; 589 struct dentry *statistics; 590 struct local_debugfsdentries_statsdentries { 591 struct dentry *transmitted_fragment_count; 592 struct dentry *multicast_transmitted_frame_count; 593 struct dentry *failed_count; 594 struct dentry *retry_count; 595 struct dentry *multiple_retry_count; 596 struct dentry *frame_duplicate_count; 597 struct dentry *received_fragment_count; 598 struct dentry *multicast_received_frame_count; 599 struct dentry *transmitted_frame_count; 600 struct dentry *wep_undecryptable_count; 601 struct dentry *num_scans; 602 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 603 struct dentry *tx_handlers_drop; 604 struct dentry *tx_handlers_queued; 605 struct dentry *tx_handlers_drop_unencrypted; 606 struct dentry *tx_handlers_drop_fragment; 607 struct dentry *tx_handlers_drop_wep; 608 struct dentry *tx_handlers_drop_not_assoc; 609 struct dentry *tx_handlers_drop_unauth_port; 610 struct dentry *rx_handlers_drop; 611 struct dentry *rx_handlers_queued; 612 struct dentry *rx_handlers_drop_nullfunc; 613 struct dentry *rx_handlers_drop_defrag; 614 struct dentry *rx_handlers_drop_short; 615 struct dentry *rx_handlers_drop_passive_scan; 616 struct dentry *tx_expand_skb_head; 617 struct dentry *tx_expand_skb_head_cloned; 618 struct dentry *rx_expand_skb_head; 619 struct dentry *rx_expand_skb_head2; 620 struct dentry *rx_handlers_fragments; 621 struct dentry *tx_status_drop; 622 struct dentry *wme_tx_queue; 623 struct dentry *wme_rx_queue; 624 #endif 625 struct dentry *dot11ACKFailureCount; 626 struct dentry *dot11RTSFailureCount; 627 struct dentry *dot11FCSErrorCount; 628 struct dentry *dot11RTSSuccessCount; 629 } stats; 630 struct dentry *stations; 631 struct dentry *keys; 632 } debugfs; 633 #endif 634 }; 635 636 static inline struct ieee80211_local *hw_to_local( 637 struct ieee80211_hw *hw) 638 { 639 return container_of(hw, struct ieee80211_local, hw); 640 } 641 642 static inline struct ieee80211_hw *local_to_hw( 643 struct ieee80211_local *local) 644 { 645 return &local->hw; 646 } 647 648 enum ieee80211_link_state_t { 649 IEEE80211_LINK_STATE_XOFF = 0, 650 IEEE80211_LINK_STATE_PENDING, 651 }; 652 653 struct sta_attribute { 654 struct attribute attr; 655 ssize_t (*show)(const struct sta_info *, char *buf); 656 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 657 }; 658 659 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid) 660 { 661 /* 662 * This format has ben mandated by the IEEE specifications, 663 * so this line may not be changed to use the __set_bit() format. 664 */ 665 bss->tim[(aid)/8] |= 1<<((aid) % 8); 666 } 667 668 static inline void bss_tim_set(struct ieee80211_local *local, 669 struct ieee80211_if_ap *bss, int aid) 670 { 671 spin_lock_bh(&local->sta_lock); 672 __bss_tim_set(bss, aid); 673 spin_unlock_bh(&local->sta_lock); 674 } 675 676 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid) 677 { 678 /* 679 * This format has ben mandated by the IEEE specifications, 680 * so this line may not be changed to use the __clear_bit() format. 681 */ 682 bss->tim[(aid)/8] &= !(1<<((aid) % 8)); 683 } 684 685 static inline void bss_tim_clear(struct ieee80211_local *local, 686 struct ieee80211_if_ap *bss, int aid) 687 { 688 spin_lock_bh(&local->sta_lock); 689 __bss_tim_clear(bss, aid); 690 spin_unlock_bh(&local->sta_lock); 691 } 692 693 /** 694 * ieee80211_is_erp_rate - Check if a rate is an ERP rate 695 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 696 * @rate: Transmission rate to check, in 100 kbps 697 * 698 * Check if a given rate is an Extended Rate PHY (ERP) rate. 699 */ 700 static inline int ieee80211_is_erp_rate(int phymode, int rate) 701 { 702 if (phymode == MODE_IEEE80211G) { 703 if (rate != 10 && rate != 20 && 704 rate != 55 && rate != 110) 705 return 1; 706 } 707 return 0; 708 } 709 710 /* ieee80211.c */ 711 int ieee80211_hw_config(struct ieee80211_local *local); 712 int ieee80211_if_config(struct net_device *dev); 713 int ieee80211_if_config_beacon(struct net_device *dev); 714 struct ieee80211_key_conf * 715 ieee80211_key_data2conf(struct ieee80211_local *local, 716 const struct ieee80211_key *data); 717 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, 718 int idx, size_t key_len, gfp_t flags); 719 void ieee80211_key_free(struct ieee80211_key *key); 720 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, 721 struct ieee80211_rx_status *status, u32 msg_type); 722 void ieee80211_prepare_rates(struct ieee80211_local *local, 723 struct ieee80211_hw_mode *mode); 724 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 725 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 726 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 727 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 728 void ieee80211_if_setup(struct net_device *dev); 729 void ieee80211_if_mgmt_setup(struct net_device *dev); 730 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 731 const char *name); 732 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev); 733 734 /* ieee80211_ioctl.c */ 735 extern const struct iw_handler_def ieee80211_iw_handler_def; 736 737 void ieee80211_update_default_wep_only(struct ieee80211_local *local); 738 739 740 /* Least common multiple of the used rates (in 100 kbps). This is used to 741 * calculate rate_inv values for each rate so that only integers are needed. */ 742 #define CHAN_UTIL_RATE_LCM 95040 743 /* 1 usec is 1/8 * (95040/10) = 1188 */ 744 #define CHAN_UTIL_PER_USEC 1188 745 /* Amount of bits to shift the result right to scale the total utilization 746 * to values that will not wrap around 32-bit integers. */ 747 #define CHAN_UTIL_SHIFT 9 748 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 749 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 750 * raw value with about 23 should give utilization in 10th of a percentage 751 * (1/1000). However, utilization is only estimated and not all intervals 752 * between frames etc. are calculated. 18 seems to give numbers that are closer 753 * to the real maximum. */ 754 #define CHAN_UTIL_PER_10MS 18 755 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 756 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 757 758 759 /* ieee80211_ioctl.c */ 760 int ieee80211_set_compression(struct ieee80211_local *local, 761 struct net_device *dev, struct sta_info *sta); 762 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 763 /* ieee80211_sta.c */ 764 void ieee80211_sta_timer(unsigned long data); 765 void ieee80211_sta_work(struct work_struct *work); 766 void ieee80211_sta_scan_work(struct work_struct *work); 767 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 768 struct ieee80211_rx_status *rx_status); 769 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 770 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 771 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 772 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 773 void ieee80211_sta_req_auth(struct net_device *dev, 774 struct ieee80211_if_sta *ifsta); 775 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 776 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, 777 struct ieee80211_rx_status *rx_status); 778 void ieee80211_rx_bss_list_init(struct net_device *dev); 779 void ieee80211_rx_bss_list_deinit(struct net_device *dev); 780 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 781 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 782 struct sk_buff *skb, u8 *bssid, 783 u8 *addr); 784 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 785 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 786 787 /* ieee80211_iface.c */ 788 int ieee80211_if_add(struct net_device *dev, const char *name, 789 struct net_device **new_dev, int type); 790 void ieee80211_if_set_type(struct net_device *dev, int type); 791 void ieee80211_if_reinit(struct net_device *dev); 792 void __ieee80211_if_del(struct ieee80211_local *local, 793 struct ieee80211_sub_if_data *sdata); 794 int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 795 void ieee80211_if_free(struct net_device *dev); 796 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 797 int ieee80211_if_add_mgmt(struct ieee80211_local *local); 798 void ieee80211_if_del_mgmt(struct ieee80211_local *local); 799 800 /* regdomain.c */ 801 void ieee80211_regdomain_init(void); 802 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); 803 804 /* for wiphy privid */ 805 extern void *mac80211_wiphy_privid; 806 807 #endif /* IEEE80211_I_H */ 808