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 }; 103 104 105 typedef enum { 106 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED 107 } ieee80211_txrx_result; 108 109 struct ieee80211_txrx_data { 110 struct sk_buff *skb; 111 struct net_device *dev; 112 struct ieee80211_local *local; 113 struct ieee80211_sub_if_data *sdata; 114 struct sta_info *sta; 115 u16 fc, ethertype; 116 struct ieee80211_key *key; 117 unsigned int fragmented:1; /* whether the MSDU was fragmented */ 118 union { 119 struct { 120 struct ieee80211_tx_control *control; 121 unsigned int unicast:1; 122 unsigned int ps_buffered:1; 123 unsigned int short_preamble:1; 124 unsigned int probe_last_frag:1; 125 struct ieee80211_hw_mode *mode; 126 struct ieee80211_rate *rate; 127 /* use this rate (if set) for last fragment; rate can 128 * be set to lower rate for the first fragments, e.g., 129 * when using CTS protection with IEEE 802.11g. */ 130 struct ieee80211_rate *last_frag_rate; 131 int last_frag_hwrate; 132 int mgmt_interface; 133 134 /* Extra fragments (in addition to the first fragment 135 * in skb) */ 136 int num_extra_frag; 137 struct sk_buff **extra_frag; 138 } tx; 139 struct { 140 struct ieee80211_rx_status *status; 141 int sent_ps_buffered; 142 int queue; 143 int load; 144 unsigned int in_scan:1; 145 /* frame is destined to interface currently processed 146 * (including multicast frames) */ 147 unsigned int ra_match:1; 148 } rx; 149 } u; 150 }; 151 152 /* Stored in sk_buff->cb */ 153 struct ieee80211_tx_packet_data { 154 int ifindex; 155 unsigned long jiffies; 156 unsigned int req_tx_status:1; 157 unsigned int do_not_encrypt:1; 158 unsigned int requeue:1; 159 unsigned int mgmt_iface:1; 160 unsigned int queue:4; 161 }; 162 163 struct ieee80211_tx_stored_packet { 164 struct ieee80211_tx_control control; 165 struct sk_buff *skb; 166 int num_extra_frag; 167 struct sk_buff **extra_frag; 168 int last_frag_rateidx; 169 int last_frag_hwrate; 170 struct ieee80211_rate *last_frag_rate; 171 unsigned int last_frag_rate_ctrl_probe:1; 172 }; 173 174 typedef ieee80211_txrx_result (*ieee80211_tx_handler) 175 (struct ieee80211_txrx_data *tx); 176 177 typedef ieee80211_txrx_result (*ieee80211_rx_handler) 178 (struct ieee80211_txrx_data *rx); 179 180 struct ieee80211_if_ap { 181 u8 *beacon_head, *beacon_tail; 182 int beacon_head_len, beacon_tail_len; 183 184 u8 ssid[IEEE80211_MAX_SSID_LEN]; 185 size_t ssid_len; 186 u8 *generic_elem; 187 size_t generic_elem_len; 188 189 /* yes, this looks ugly, but guarantees that we can later use 190 * bitmap_empty :) 191 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 192 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 193 atomic_t num_sta_ps; /* number of stations in PS mode */ 194 struct sk_buff_head ps_bc_buf; 195 int dtim_period, dtim_count; 196 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 197 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 198 int num_beacons; /* number of TXed beacon frames for this BSS */ 199 }; 200 201 struct ieee80211_if_wds { 202 u8 remote_addr[ETH_ALEN]; 203 struct sta_info *sta; 204 }; 205 206 struct ieee80211_if_vlan { 207 u8 id; 208 }; 209 210 struct ieee80211_if_sta { 211 enum { 212 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 213 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 214 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 215 } state; 216 struct timer_list timer; 217 struct work_struct work; 218 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 219 u8 ssid[IEEE80211_MAX_SSID_LEN]; 220 size_t ssid_len; 221 u16 aid; 222 u16 ap_capab, capab; 223 u8 *extra_ie; /* to be added to the end of AssocReq */ 224 size_t extra_ie_len; 225 226 /* The last AssocReq/Resp IEs */ 227 u8 *assocreq_ies, *assocresp_ies; 228 size_t assocreq_ies_len, assocresp_ies_len; 229 230 int auth_tries, assoc_tries; 231 232 unsigned int ssid_set:1; 233 unsigned int bssid_set:1; 234 unsigned int prev_bssid_set:1; 235 unsigned int authenticated:1; 236 unsigned int associated:1; 237 unsigned int probereq_poll:1; 238 unsigned int use_protection:1; 239 unsigned int create_ibss:1; 240 unsigned int mixed_cell:1; 241 unsigned int wmm_enabled:1; 242 unsigned int auto_ssid_sel:1; 243 unsigned int auto_bssid_sel:1; 244 unsigned int auto_channel_sel:1; 245 #define IEEE80211_STA_REQ_SCAN 0 246 #define IEEE80211_STA_REQ_AUTH 1 247 #define IEEE80211_STA_REQ_RUN 2 248 unsigned long request; 249 struct sk_buff_head skb_queue; 250 251 int key_mgmt; 252 unsigned long last_probe; 253 254 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 255 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 256 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 257 unsigned int auth_algs; /* bitfield of allowed auth algs */ 258 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 259 int auth_transaction; 260 261 unsigned long ibss_join_req; 262 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 263 u32 supp_rates_bits; 264 265 int wmm_last_param_set; 266 }; 267 268 269 struct ieee80211_sub_if_data { 270 struct list_head list; 271 unsigned int type; 272 273 struct wireless_dev wdev; 274 275 struct net_device *dev; 276 struct ieee80211_local *local; 277 278 int mc_count; 279 unsigned int allmulti:1; 280 unsigned int promisc:1; 281 282 struct net_device_stats stats; 283 int drop_unencrypted; 284 int eapol; /* 0 = process EAPOL frames as normal data frames, 285 * 1 = send EAPOL frames through wlan#ap to hostapd 286 * (default) */ 287 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized 288 * port */ 289 290 u16 sequence; 291 292 /* Fragment table for host-based reassembly */ 293 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 294 unsigned int fragment_next; 295 296 #define NUM_DEFAULT_KEYS 4 297 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 298 struct ieee80211_key *default_key; 299 300 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 301 302 union { 303 struct ieee80211_if_ap ap; 304 struct ieee80211_if_wds wds; 305 struct ieee80211_if_vlan vlan; 306 struct ieee80211_if_sta sta; 307 } u; 308 int channel_use; 309 int channel_use_raw; 310 311 #ifdef CONFIG_MAC80211_DEBUGFS 312 struct dentry *debugfsdir; 313 union { 314 struct { 315 struct dentry *channel_use; 316 struct dentry *drop_unencrypted; 317 struct dentry *eapol; 318 struct dentry *ieee8021_x; 319 struct dentry *state; 320 struct dentry *bssid; 321 struct dentry *prev_bssid; 322 struct dentry *ssid_len; 323 struct dentry *aid; 324 struct dentry *ap_capab; 325 struct dentry *capab; 326 struct dentry *extra_ie_len; 327 struct dentry *auth_tries; 328 struct dentry *assoc_tries; 329 struct dentry *auth_algs; 330 struct dentry *auth_alg; 331 struct dentry *auth_transaction; 332 struct dentry *flags; 333 } sta; 334 struct { 335 struct dentry *channel_use; 336 struct dentry *drop_unencrypted; 337 struct dentry *eapol; 338 struct dentry *ieee8021_x; 339 struct dentry *num_sta_ps; 340 struct dentry *dtim_period; 341 struct dentry *dtim_count; 342 struct dentry *num_beacons; 343 struct dentry *force_unicast_rateidx; 344 struct dentry *max_ratectrl_rateidx; 345 struct dentry *num_buffered_multicast; 346 struct dentry *beacon_head_len; 347 struct dentry *beacon_tail_len; 348 } ap; 349 struct { 350 struct dentry *channel_use; 351 struct dentry *drop_unencrypted; 352 struct dentry *eapol; 353 struct dentry *ieee8021_x; 354 struct dentry *peer; 355 } wds; 356 struct { 357 struct dentry *channel_use; 358 struct dentry *drop_unencrypted; 359 struct dentry *eapol; 360 struct dentry *ieee8021_x; 361 struct dentry *vlan_id; 362 } vlan; 363 struct { 364 struct dentry *mode; 365 } monitor; 366 struct dentry *default_key; 367 } debugfs; 368 #endif 369 }; 370 371 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 372 373 enum { 374 IEEE80211_RX_MSG = 1, 375 IEEE80211_TX_STATUS_MSG = 2, 376 }; 377 378 struct ieee80211_local { 379 /* embed the driver visible part. 380 * don't cast (use the static inlines below), but we keep 381 * it first anyway so they become a no-op */ 382 struct ieee80211_hw hw; 383 384 const struct ieee80211_ops *ops; 385 386 /* List of registered struct ieee80211_hw_mode */ 387 struct list_head modes_list; 388 389 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 390 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */ 391 int open_count; 392 int monitors; 393 struct iw_statistics wstats; 394 u8 wstats_flags; 395 396 enum { 397 IEEE80211_DEV_UNINITIALIZED = 0, 398 IEEE80211_DEV_REGISTERED, 399 IEEE80211_DEV_UNREGISTERED, 400 } reg_state; 401 402 /* Tasklet and skb queue to process calls from IRQ mode. All frames 403 * added to skb_queue will be processed, but frames in 404 * skb_queue_unreliable may be dropped if the total length of these 405 * queues increases over the limit. */ 406 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 407 struct tasklet_struct tasklet; 408 struct sk_buff_head skb_queue; 409 struct sk_buff_head skb_queue_unreliable; 410 411 /* Station data structures */ 412 spinlock_t sta_lock; /* mutex for STA data structures */ 413 int num_sta; /* number of stations in sta_list */ 414 struct list_head sta_list; 415 struct list_head deleted_sta_list; 416 struct sta_info *sta_hash[STA_HASH_SIZE]; 417 struct timer_list sta_cleanup; 418 419 unsigned long state[NUM_TX_DATA_QUEUES]; 420 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 421 struct tasklet_struct tx_pending_tasklet; 422 423 int mc_count; /* total count of multicast entries in all interfaces */ 424 int iff_allmultis, iff_promiscs; 425 /* number of interfaces with corresponding IFF_ flags */ 426 427 struct rate_control_ref *rate_ctrl; 428 429 int next_mode; /* MODE_IEEE80211* 430 * The mode preference for next channel change. This is 431 * used to select .11g vs. .11b channels (or 4.9 GHz vs. 432 * .11a) when the channel number is not unique. */ 433 434 /* Supported and basic rate filters for different modes. These are 435 * pointers to -1 terminated lists and rates in 100 kbps units. */ 436 int *supp_rates[NUM_IEEE80211_MODES]; 437 int *basic_rates[NUM_IEEE80211_MODES]; 438 439 int rts_threshold; 440 int cts_protect_erp_frames; 441 int fragmentation_threshold; 442 int short_retry_limit; /* dot11ShortRetryLimit */ 443 int long_retry_limit; /* dot11LongRetryLimit */ 444 int short_preamble; /* use short preamble with IEEE 802.11b */ 445 446 struct crypto_blkcipher *wep_tx_tfm; 447 struct crypto_blkcipher *wep_rx_tfm; 448 u32 wep_iv; 449 int key_tx_rx_threshold; /* number of times any key can be used in TX 450 * or RX before generating a rekey 451 * notification; 0 = notification disabled. */ 452 453 int bridge_packets; /* bridge packets between associated stations and 454 * deliver multicast frames both back to wireless 455 * media and to the local net stack */ 456 457 ieee80211_rx_handler *rx_pre_handlers; 458 ieee80211_rx_handler *rx_handlers; 459 ieee80211_tx_handler *tx_handlers; 460 461 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under 462 * sta_bss_lock or sta_lock. */ 463 struct list_head sub_if_list; 464 int sta_scanning; 465 int scan_channel_idx; 466 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 467 unsigned long last_scan_completed; 468 struct delayed_work scan_work; 469 struct net_device *scan_dev; 470 struct ieee80211_channel *oper_channel, *scan_channel; 471 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 472 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 473 size_t scan_ssid_len; 474 struct list_head sta_bss_list; 475 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 476 spinlock_t sta_bss_lock; 477 #define IEEE80211_SCAN_MATCH_SSID BIT(0) 478 #define IEEE80211_SCAN_WPA_ONLY BIT(1) 479 #define IEEE80211_SCAN_EXTRA_INFO BIT(2) 480 int scan_flags; 481 482 /* SNMP counters */ 483 /* dot11CountersTable */ 484 u32 dot11TransmittedFragmentCount; 485 u32 dot11MulticastTransmittedFrameCount; 486 u32 dot11FailedCount; 487 u32 dot11RetryCount; 488 u32 dot11MultipleRetryCount; 489 u32 dot11FrameDuplicateCount; 490 u32 dot11ReceivedFragmentCount; 491 u32 dot11MulticastReceivedFrameCount; 492 u32 dot11TransmittedFrameCount; 493 u32 dot11WEPUndecryptableCount; 494 495 #ifdef CONFIG_MAC80211_LEDS 496 int tx_led_counter, rx_led_counter; 497 struct led_trigger *tx_led, *rx_led; 498 char tx_led_name[32], rx_led_name[32]; 499 #endif 500 501 u32 channel_use; 502 u32 channel_use_raw; 503 u32 stat_time; 504 struct timer_list stat_timer; 505 506 #ifdef CONFIG_MAC80211_DEBUGFS 507 struct work_struct sta_debugfs_add; 508 #endif 509 510 enum { 511 STA_ANTENNA_SEL_AUTO = 0, 512 STA_ANTENNA_SEL_SW_CTRL = 1, 513 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2 514 } sta_antenna_sel; 515 516 int rate_ctrl_num_up, rate_ctrl_num_down; 517 518 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 519 /* TX/RX handler statistics */ 520 unsigned int tx_handlers_drop; 521 unsigned int tx_handlers_queued; 522 unsigned int tx_handlers_drop_unencrypted; 523 unsigned int tx_handlers_drop_fragment; 524 unsigned int tx_handlers_drop_wep; 525 unsigned int tx_handlers_drop_not_assoc; 526 unsigned int tx_handlers_drop_unauth_port; 527 unsigned int rx_handlers_drop; 528 unsigned int rx_handlers_queued; 529 unsigned int rx_handlers_drop_nullfunc; 530 unsigned int rx_handlers_drop_defrag; 531 unsigned int rx_handlers_drop_short; 532 unsigned int rx_handlers_drop_passive_scan; 533 unsigned int tx_expand_skb_head; 534 unsigned int tx_expand_skb_head_cloned; 535 unsigned int rx_expand_skb_head; 536 unsigned int rx_expand_skb_head2; 537 unsigned int rx_handlers_fragments; 538 unsigned int tx_status_drop; 539 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 540 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 541 #define I802_DEBUG_INC(c) (c)++ 542 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 543 #define I802_DEBUG_INC(c) do { } while (0) 544 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 545 546 547 int default_wep_only; /* only default WEP keys are used with this 548 * interface; this is used to decide when hwaccel 549 * can be used with default keys */ 550 int total_ps_buffered; /* total number of all buffered unicast and 551 * multicast packets for power saving stations 552 */ 553 int allow_broadcast_always; /* whether to allow TX of broadcast frames 554 * even when there are no associated STAs 555 */ 556 557 int wifi_wme_noack_test; 558 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 559 560 unsigned int enabled_modes; /* bitfield of allowed modes; 561 * (1 << MODE_*) */ 562 unsigned int hw_modes; /* bitfield of supported hardware modes; 563 * (1 << MODE_*) */ 564 565 int user_space_mlme; 566 567 #ifdef CONFIG_MAC80211_DEBUGFS 568 struct local_debugfsdentries { 569 struct dentry *channel; 570 struct dentry *frequency; 571 struct dentry *radar_detect; 572 struct dentry *antenna_sel_tx; 573 struct dentry *antenna_sel_rx; 574 struct dentry *bridge_packets; 575 struct dentry *key_tx_rx_threshold; 576 struct dentry *rts_threshold; 577 struct dentry *fragmentation_threshold; 578 struct dentry *short_retry_limit; 579 struct dentry *long_retry_limit; 580 struct dentry *total_ps_buffered; 581 struct dentry *mode; 582 struct dentry *wep_iv; 583 struct dentry *tx_power_reduction; 584 struct dentry *modes; 585 struct dentry *statistics; 586 struct local_debugfsdentries_statsdentries { 587 struct dentry *transmitted_fragment_count; 588 struct dentry *multicast_transmitted_frame_count; 589 struct dentry *failed_count; 590 struct dentry *retry_count; 591 struct dentry *multiple_retry_count; 592 struct dentry *frame_duplicate_count; 593 struct dentry *received_fragment_count; 594 struct dentry *multicast_received_frame_count; 595 struct dentry *transmitted_frame_count; 596 struct dentry *wep_undecryptable_count; 597 struct dentry *num_scans; 598 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 599 struct dentry *tx_handlers_drop; 600 struct dentry *tx_handlers_queued; 601 struct dentry *tx_handlers_drop_unencrypted; 602 struct dentry *tx_handlers_drop_fragment; 603 struct dentry *tx_handlers_drop_wep; 604 struct dentry *tx_handlers_drop_not_assoc; 605 struct dentry *tx_handlers_drop_unauth_port; 606 struct dentry *rx_handlers_drop; 607 struct dentry *rx_handlers_queued; 608 struct dentry *rx_handlers_drop_nullfunc; 609 struct dentry *rx_handlers_drop_defrag; 610 struct dentry *rx_handlers_drop_short; 611 struct dentry *rx_handlers_drop_passive_scan; 612 struct dentry *tx_expand_skb_head; 613 struct dentry *tx_expand_skb_head_cloned; 614 struct dentry *rx_expand_skb_head; 615 struct dentry *rx_expand_skb_head2; 616 struct dentry *rx_handlers_fragments; 617 struct dentry *tx_status_drop; 618 struct dentry *wme_tx_queue; 619 struct dentry *wme_rx_queue; 620 #endif 621 struct dentry *dot11ACKFailureCount; 622 struct dentry *dot11RTSFailureCount; 623 struct dentry *dot11FCSErrorCount; 624 struct dentry *dot11RTSSuccessCount; 625 } stats; 626 struct dentry *stations; 627 struct dentry *keys; 628 } debugfs; 629 #endif 630 }; 631 632 static inline struct ieee80211_local *hw_to_local( 633 struct ieee80211_hw *hw) 634 { 635 return container_of(hw, struct ieee80211_local, hw); 636 } 637 638 static inline struct ieee80211_hw *local_to_hw( 639 struct ieee80211_local *local) 640 { 641 return &local->hw; 642 } 643 644 enum ieee80211_link_state_t { 645 IEEE80211_LINK_STATE_XOFF = 0, 646 IEEE80211_LINK_STATE_PENDING, 647 }; 648 649 struct sta_attribute { 650 struct attribute attr; 651 ssize_t (*show)(const struct sta_info *, char *buf); 652 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 653 }; 654 655 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid) 656 { 657 /* 658 * This format has ben mandated by the IEEE specifications, 659 * so this line may not be changed to use the __set_bit() format. 660 */ 661 bss->tim[(aid)/8] |= 1<<((aid) % 8); 662 } 663 664 static inline void bss_tim_set(struct ieee80211_local *local, 665 struct ieee80211_if_ap *bss, int aid) 666 { 667 spin_lock_bh(&local->sta_lock); 668 __bss_tim_set(bss, aid); 669 spin_unlock_bh(&local->sta_lock); 670 } 671 672 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid) 673 { 674 /* 675 * This format has ben mandated by the IEEE specifications, 676 * so this line may not be changed to use the __clear_bit() format. 677 */ 678 bss->tim[(aid)/8] &= !(1<<((aid) % 8)); 679 } 680 681 static inline void bss_tim_clear(struct ieee80211_local *local, 682 struct ieee80211_if_ap *bss, int aid) 683 { 684 spin_lock_bh(&local->sta_lock); 685 __bss_tim_clear(bss, aid); 686 spin_unlock_bh(&local->sta_lock); 687 } 688 689 /** 690 * ieee80211_is_erp_rate - Check if a rate is an ERP rate 691 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 692 * @rate: Transmission rate to check, in 100 kbps 693 * 694 * Check if a given rate is an Extended Rate PHY (ERP) rate. 695 */ 696 static inline int ieee80211_is_erp_rate(int phymode, int rate) 697 { 698 if (phymode == MODE_IEEE80211G) { 699 if (rate != 10 && rate != 20 && 700 rate != 55 && rate != 110) 701 return 1; 702 } 703 return 0; 704 } 705 706 /* ieee80211.c */ 707 int ieee80211_hw_config(struct ieee80211_local *local); 708 int ieee80211_if_config(struct net_device *dev); 709 int ieee80211_if_config_beacon(struct net_device *dev); 710 struct ieee80211_key_conf * 711 ieee80211_key_data2conf(struct ieee80211_local *local, 712 const struct ieee80211_key *data); 713 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, 714 int idx, size_t key_len, gfp_t flags); 715 void ieee80211_key_free(struct ieee80211_key *key); 716 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, 717 struct ieee80211_rx_status *status, u32 msg_type); 718 void ieee80211_prepare_rates(struct ieee80211_local *local, 719 struct ieee80211_hw_mode *mode); 720 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 721 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 722 void ieee80211_if_setup(struct net_device *dev); 723 void ieee80211_if_mgmt_setup(struct net_device *dev); 724 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 725 const char *name); 726 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev); 727 728 /* ieee80211_ioctl.c */ 729 extern const struct iw_handler_def ieee80211_iw_handler_def; 730 731 void ieee80211_update_default_wep_only(struct ieee80211_local *local); 732 733 734 /* Least common multiple of the used rates (in 100 kbps). This is used to 735 * calculate rate_inv values for each rate so that only integers are needed. */ 736 #define CHAN_UTIL_RATE_LCM 95040 737 /* 1 usec is 1/8 * (95040/10) = 1188 */ 738 #define CHAN_UTIL_PER_USEC 1188 739 /* Amount of bits to shift the result right to scale the total utilization 740 * to values that will not wrap around 32-bit integers. */ 741 #define CHAN_UTIL_SHIFT 9 742 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 743 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 744 * raw value with about 23 should give utilization in 10th of a percentage 745 * (1/1000). However, utilization is only estimated and not all intervals 746 * between frames etc. are calculated. 18 seems to give numbers that are closer 747 * to the real maximum. */ 748 #define CHAN_UTIL_PER_10MS 18 749 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 750 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 751 752 753 /* ieee80211_ioctl.c */ 754 int ieee80211_set_compression(struct ieee80211_local *local, 755 struct net_device *dev, struct sta_info *sta); 756 int ieee80211_init_client(struct net_device *dev); 757 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 758 /* ieee80211_sta.c */ 759 void ieee80211_sta_timer(unsigned long data); 760 void ieee80211_sta_work(struct work_struct *work); 761 void ieee80211_sta_scan_work(struct work_struct *work); 762 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 763 struct ieee80211_rx_status *rx_status); 764 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 765 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 766 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 767 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 768 void ieee80211_sta_req_auth(struct net_device *dev, 769 struct ieee80211_if_sta *ifsta); 770 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 771 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, 772 struct ieee80211_rx_status *rx_status); 773 void ieee80211_rx_bss_list_init(struct net_device *dev); 774 void ieee80211_rx_bss_list_deinit(struct net_device *dev); 775 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 776 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 777 struct sk_buff *skb, u8 *bssid, 778 u8 *addr); 779 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 780 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 781 782 /* ieee80211_iface.c */ 783 int ieee80211_if_add(struct net_device *dev, const char *name, 784 struct net_device **new_dev, int type); 785 void ieee80211_if_set_type(struct net_device *dev, int type); 786 void ieee80211_if_reinit(struct net_device *dev); 787 void __ieee80211_if_del(struct ieee80211_local *local, 788 struct ieee80211_sub_if_data *sdata); 789 int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 790 void ieee80211_if_free(struct net_device *dev); 791 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 792 int ieee80211_if_add_mgmt(struct ieee80211_local *local); 793 void ieee80211_if_del_mgmt(struct ieee80211_local *local); 794 795 /* for wiphy privid */ 796 extern void *mac80211_wiphy_privid; 797 798 #endif /* IEEE80211_I_H */ 799