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 BIT(x) (1 << (x)) 41 42 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) 43 44 /* Maximum number of broadcast/multicast frames to buffer when some of the 45 * associated stations are using power saving. */ 46 #define AP_MAX_BC_BUFFER 128 47 48 /* Maximum number of frames buffered to all STAs, including multicast frames. 49 * Note: increasing this limit increases the potential memory requirement. Each 50 * frame can be up to about 2 kB long. */ 51 #define TOTAL_MAX_TX_BUFFER 512 52 53 /* Required encryption head and tailroom */ 54 #define IEEE80211_ENCRYPT_HEADROOM 8 55 #define IEEE80211_ENCRYPT_TAILROOM 12 56 57 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 58 * reception of at least three fragmented frames. This limit can be increased 59 * by changing this define, at the cost of slower frame reassembly and 60 * increased memory use (about 2 kB of RAM per entry). */ 61 #define IEEE80211_FRAGMENT_MAX 4 62 63 struct ieee80211_fragment_entry { 64 unsigned long first_frag_time; 65 unsigned int seq; 66 unsigned int rx_queue; 67 unsigned int last_frag; 68 unsigned int extra_len; 69 struct sk_buff_head skb_list; 70 int ccmp; /* Whether fragments were encrypted with CCMP */ 71 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 72 }; 73 74 75 struct ieee80211_sta_bss { 76 struct list_head list; 77 struct ieee80211_sta_bss *hnext; 78 atomic_t users; 79 80 u8 bssid[ETH_ALEN]; 81 u8 ssid[IEEE80211_MAX_SSID_LEN]; 82 size_t ssid_len; 83 u16 capability; /* host byte order */ 84 int hw_mode; 85 int channel; 86 int freq; 87 int rssi, signal, noise; 88 u8 *wpa_ie; 89 size_t wpa_ie_len; 90 u8 *rsn_ie; 91 size_t rsn_ie_len; 92 u8 *wmm_ie; 93 size_t wmm_ie_len; 94 #define IEEE80211_MAX_SUPP_RATES 32 95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 96 size_t supp_rates_len; 97 int beacon_int; 98 u64 timestamp; 99 100 int probe_resp; 101 unsigned long last_update; 102 103 /* during assocation, we save an ERP value from a probe response so 104 * that we can feed ERP info to the driver when handling the 105 * association completes. these fields probably won't be up-to-date 106 * otherwise, you probably don't want to use them. */ 107 int has_erp_value; 108 u8 erp_value; 109 }; 110 111 112 typedef enum { 113 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED 114 } ieee80211_txrx_result; 115 116 /* flags used in struct ieee80211_txrx_data.flags */ 117 /* whether the MSDU was fragmented */ 118 #define IEEE80211_TXRXD_FRAGMENTED BIT(0) 119 #define IEEE80211_TXRXD_TXUNICAST BIT(1) 120 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2) 121 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3) 122 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4) 123 /* frame is destined to interface currently processed (incl. multicast frames) */ 124 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5) 125 #define IEEE80211_TXRXD_TX_INJECTED BIT(6) 126 struct ieee80211_txrx_data { 127 struct sk_buff *skb; 128 struct net_device *dev; 129 struct ieee80211_local *local; 130 struct ieee80211_sub_if_data *sdata; 131 struct sta_info *sta; 132 u16 fc, ethertype; 133 struct ieee80211_key *key; 134 unsigned int flags; 135 union { 136 struct { 137 struct ieee80211_tx_control *control; 138 struct ieee80211_hw_mode *mode; 139 struct ieee80211_rate *rate; 140 /* use this rate (if set) for last fragment; rate can 141 * be set to lower rate for the first fragments, e.g., 142 * when using CTS protection with IEEE 802.11g. */ 143 struct ieee80211_rate *last_frag_rate; 144 int last_frag_hwrate; 145 146 /* Extra fragments (in addition to the first fragment 147 * in skb) */ 148 int num_extra_frag; 149 struct sk_buff **extra_frag; 150 } tx; 151 struct { 152 struct ieee80211_rx_status *status; 153 int sent_ps_buffered; 154 int queue; 155 int load; 156 u32 tkip_iv32; 157 u16 tkip_iv16; 158 } rx; 159 } u; 160 }; 161 162 /* flags used in struct ieee80211_tx_packet_data.flags */ 163 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0) 164 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1) 165 #define IEEE80211_TXPD_REQUEUE BIT(2) 166 /* Stored in sk_buff->cb */ 167 struct ieee80211_tx_packet_data { 168 int ifindex; 169 unsigned long jiffies; 170 unsigned int flags; 171 u8 queue; 172 }; 173 174 struct ieee80211_tx_stored_packet { 175 struct ieee80211_tx_control control; 176 struct sk_buff *skb; 177 int num_extra_frag; 178 struct sk_buff **extra_frag; 179 int last_frag_rateidx; 180 int last_frag_hwrate; 181 struct ieee80211_rate *last_frag_rate; 182 unsigned int last_frag_rate_ctrl_probe; 183 }; 184 185 typedef ieee80211_txrx_result (*ieee80211_tx_handler) 186 (struct ieee80211_txrx_data *tx); 187 188 typedef ieee80211_txrx_result (*ieee80211_rx_handler) 189 (struct ieee80211_txrx_data *rx); 190 191 struct ieee80211_if_ap { 192 u8 *beacon_head, *beacon_tail; 193 int beacon_head_len, beacon_tail_len; 194 195 struct list_head vlans; 196 197 u8 ssid[IEEE80211_MAX_SSID_LEN]; 198 size_t ssid_len; 199 200 /* yes, this looks ugly, but guarantees that we can later use 201 * bitmap_empty :) 202 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 203 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 204 atomic_t num_sta_ps; /* number of stations in PS mode */ 205 struct sk_buff_head ps_bc_buf; 206 int dtim_period, dtim_count; 207 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 208 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 209 int num_beacons; /* number of TXed beacon frames for this BSS */ 210 }; 211 212 struct ieee80211_if_wds { 213 u8 remote_addr[ETH_ALEN]; 214 struct sta_info *sta; 215 }; 216 217 struct ieee80211_if_vlan { 218 struct ieee80211_sub_if_data *ap; 219 struct list_head list; 220 }; 221 222 /* flags used in struct ieee80211_if_sta.flags */ 223 #define IEEE80211_STA_SSID_SET BIT(0) 224 #define IEEE80211_STA_BSSID_SET BIT(1) 225 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 226 #define IEEE80211_STA_AUTHENTICATED BIT(3) 227 #define IEEE80211_STA_ASSOCIATED BIT(4) 228 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 229 #define IEEE80211_STA_CREATE_IBSS BIT(6) 230 #define IEEE80211_STA_MIXED_CELL BIT(7) 231 #define IEEE80211_STA_WMM_ENABLED BIT(8) 232 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 233 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 234 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 235 struct ieee80211_if_sta { 236 enum { 237 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 238 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 239 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 240 } state; 241 struct timer_list timer; 242 struct work_struct work; 243 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 244 u8 ssid[IEEE80211_MAX_SSID_LEN]; 245 size_t ssid_len; 246 u16 aid; 247 u16 ap_capab, capab; 248 u8 *extra_ie; /* to be added to the end of AssocReq */ 249 size_t extra_ie_len; 250 251 /* The last AssocReq/Resp IEs */ 252 u8 *assocreq_ies, *assocresp_ies; 253 size_t assocreq_ies_len, assocresp_ies_len; 254 255 int auth_tries, assoc_tries; 256 257 unsigned int flags; 258 #define IEEE80211_STA_REQ_SCAN 0 259 #define IEEE80211_STA_REQ_AUTH 1 260 #define IEEE80211_STA_REQ_RUN 2 261 unsigned long request; 262 struct sk_buff_head skb_queue; 263 264 int key_management_enabled; 265 unsigned long last_probe; 266 267 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 268 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 269 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 270 unsigned int auth_algs; /* bitfield of allowed auth algs */ 271 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 272 int auth_transaction; 273 274 unsigned long ibss_join_req; 275 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 276 u32 supp_rates_bits; 277 278 int wmm_last_param_set; 279 }; 280 281 282 /* flags used in struct ieee80211_sub_if_data.flags */ 283 #define IEEE80211_SDATA_ALLMULTI BIT(0) 284 #define IEEE80211_SDATA_PROMISC BIT(1) 285 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */ 286 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon 287 * generator reports that there are no present stations that cannot support short 288 * preambles */ 289 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3) 290 #define IEEE80211_SDATA_USERSPACE_MLME BIT(4) 291 struct ieee80211_sub_if_data { 292 struct list_head list; 293 enum ieee80211_if_types type; 294 295 struct wireless_dev wdev; 296 297 /* keys */ 298 struct list_head key_list; 299 300 struct net_device *dev; 301 struct ieee80211_local *local; 302 303 unsigned int flags; 304 305 int drop_unencrypted; 306 int eapol; /* 0 = process EAPOL frames as normal data frames, 307 * 1 = send EAPOL frames through wlan#ap to hostapd 308 * (default) */ 309 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized 310 * port */ 311 312 u16 sequence; 313 314 /* Fragment table for host-based reassembly */ 315 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 316 unsigned int fragment_next; 317 318 #define NUM_DEFAULT_KEYS 4 319 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 320 struct ieee80211_key *default_key; 321 322 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 323 324 union { 325 struct ieee80211_if_ap ap; 326 struct ieee80211_if_wds wds; 327 struct ieee80211_if_vlan vlan; 328 struct ieee80211_if_sta sta; 329 } u; 330 int channel_use; 331 int channel_use_raw; 332 333 #ifdef CONFIG_MAC80211_DEBUGFS 334 struct dentry *debugfsdir; 335 union { 336 struct { 337 struct dentry *channel_use; 338 struct dentry *drop_unencrypted; 339 struct dentry *eapol; 340 struct dentry *ieee8021_x; 341 struct dentry *state; 342 struct dentry *bssid; 343 struct dentry *prev_bssid; 344 struct dentry *ssid_len; 345 struct dentry *aid; 346 struct dentry *ap_capab; 347 struct dentry *capab; 348 struct dentry *extra_ie_len; 349 struct dentry *auth_tries; 350 struct dentry *assoc_tries; 351 struct dentry *auth_algs; 352 struct dentry *auth_alg; 353 struct dentry *auth_transaction; 354 struct dentry *flags; 355 } sta; 356 struct { 357 struct dentry *channel_use; 358 struct dentry *drop_unencrypted; 359 struct dentry *eapol; 360 struct dentry *ieee8021_x; 361 struct dentry *num_sta_ps; 362 struct dentry *dtim_period; 363 struct dentry *dtim_count; 364 struct dentry *num_beacons; 365 struct dentry *force_unicast_rateidx; 366 struct dentry *max_ratectrl_rateidx; 367 struct dentry *num_buffered_multicast; 368 struct dentry *beacon_head_len; 369 struct dentry *beacon_tail_len; 370 } ap; 371 struct { 372 struct dentry *channel_use; 373 struct dentry *drop_unencrypted; 374 struct dentry *eapol; 375 struct dentry *ieee8021_x; 376 struct dentry *peer; 377 } wds; 378 struct { 379 struct dentry *channel_use; 380 struct dentry *drop_unencrypted; 381 struct dentry *eapol; 382 struct dentry *ieee8021_x; 383 } vlan; 384 struct { 385 struct dentry *mode; 386 } monitor; 387 struct dentry *default_key; 388 } debugfs; 389 #endif 390 }; 391 392 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 393 394 enum { 395 IEEE80211_RX_MSG = 1, 396 IEEE80211_TX_STATUS_MSG = 2, 397 }; 398 399 struct ieee80211_local { 400 /* embed the driver visible part. 401 * don't cast (use the static inlines below), but we keep 402 * it first anyway so they become a no-op */ 403 struct ieee80211_hw hw; 404 405 const struct ieee80211_ops *ops; 406 407 /* List of registered struct ieee80211_hw_mode */ 408 struct list_head modes_list; 409 410 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 411 int open_count; 412 int monitors; 413 unsigned int filter_flags; /* FIF_* */ 414 struct iw_statistics wstats; 415 u8 wstats_flags; 416 int tx_headroom; /* required headroom for hardware/radiotap */ 417 418 enum { 419 IEEE80211_DEV_UNINITIALIZED = 0, 420 IEEE80211_DEV_REGISTERED, 421 IEEE80211_DEV_UNREGISTERED, 422 } reg_state; 423 424 /* Tasklet and skb queue to process calls from IRQ mode. All frames 425 * added to skb_queue will be processed, but frames in 426 * skb_queue_unreliable may be dropped if the total length of these 427 * queues increases over the limit. */ 428 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 429 struct tasklet_struct tasklet; 430 struct sk_buff_head skb_queue; 431 struct sk_buff_head skb_queue_unreliable; 432 433 /* Station data structures */ 434 rwlock_t sta_lock; /* protects STA data structures */ 435 int num_sta; /* number of stations in sta_list */ 436 struct list_head sta_list; 437 struct sta_info *sta_hash[STA_HASH_SIZE]; 438 struct timer_list sta_cleanup; 439 440 unsigned long state[NUM_TX_DATA_QUEUES]; 441 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 442 struct tasklet_struct tx_pending_tasklet; 443 444 /* number of interfaces with corresponding IFF_ flags */ 445 atomic_t iff_allmultis, iff_promiscs; 446 447 struct rate_control_ref *rate_ctrl; 448 449 /* Supported and basic rate filters for different modes. These are 450 * pointers to -1 terminated lists and rates in 100 kbps units. */ 451 int *supp_rates[NUM_IEEE80211_MODES]; 452 int *basic_rates[NUM_IEEE80211_MODES]; 453 454 int rts_threshold; 455 int fragmentation_threshold; 456 int short_retry_limit; /* dot11ShortRetryLimit */ 457 int long_retry_limit; /* dot11LongRetryLimit */ 458 459 struct crypto_blkcipher *wep_tx_tfm; 460 struct crypto_blkcipher *wep_rx_tfm; 461 u32 wep_iv; 462 463 int bridge_packets; /* bridge packets between associated stations and 464 * deliver multicast frames both back to wireless 465 * media and to the local net stack */ 466 467 ieee80211_rx_handler *rx_pre_handlers; 468 ieee80211_rx_handler *rx_handlers; 469 ieee80211_tx_handler *tx_handlers; 470 471 struct list_head interfaces; 472 473 int sta_scanning; 474 int scan_channel_idx; 475 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 476 unsigned long last_scan_completed; 477 struct delayed_work scan_work; 478 struct net_device *scan_dev; 479 struct ieee80211_channel *oper_channel, *scan_channel; 480 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 481 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 482 size_t scan_ssid_len; 483 struct list_head sta_bss_list; 484 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 485 spinlock_t sta_bss_lock; 486 #define IEEE80211_SCAN_MATCH_SSID BIT(0) 487 #define IEEE80211_SCAN_WPA_ONLY BIT(1) 488 #define IEEE80211_SCAN_EXTRA_INFO BIT(2) 489 int scan_flags; 490 491 /* SNMP counters */ 492 /* dot11CountersTable */ 493 u32 dot11TransmittedFragmentCount; 494 u32 dot11MulticastTransmittedFrameCount; 495 u32 dot11FailedCount; 496 u32 dot11RetryCount; 497 u32 dot11MultipleRetryCount; 498 u32 dot11FrameDuplicateCount; 499 u32 dot11ReceivedFragmentCount; 500 u32 dot11MulticastReceivedFrameCount; 501 u32 dot11TransmittedFrameCount; 502 u32 dot11WEPUndecryptableCount; 503 504 #ifdef CONFIG_MAC80211_LEDS 505 int tx_led_counter, rx_led_counter; 506 struct led_trigger *tx_led, *rx_led, *assoc_led; 507 char tx_led_name[32], rx_led_name[32], assoc_led_name[32]; 508 #endif 509 510 u32 channel_use; 511 u32 channel_use_raw; 512 513 #ifdef CONFIG_MAC80211_DEBUGFS 514 struct work_struct sta_debugfs_add; 515 #endif 516 517 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 518 /* TX/RX handler statistics */ 519 unsigned int tx_handlers_drop; 520 unsigned int tx_handlers_queued; 521 unsigned int tx_handlers_drop_unencrypted; 522 unsigned int tx_handlers_drop_fragment; 523 unsigned int tx_handlers_drop_wep; 524 unsigned int tx_handlers_drop_not_assoc; 525 unsigned int tx_handlers_drop_unauth_port; 526 unsigned int rx_handlers_drop; 527 unsigned int rx_handlers_queued; 528 unsigned int rx_handlers_drop_nullfunc; 529 unsigned int rx_handlers_drop_defrag; 530 unsigned int rx_handlers_drop_short; 531 unsigned int rx_handlers_drop_passive_scan; 532 unsigned int tx_expand_skb_head; 533 unsigned int tx_expand_skb_head_cloned; 534 unsigned int rx_expand_skb_head; 535 unsigned int rx_expand_skb_head2; 536 unsigned int rx_handlers_fragments; 537 unsigned int tx_status_drop; 538 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 539 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 540 #define I802_DEBUG_INC(c) (c)++ 541 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 542 #define I802_DEBUG_INC(c) do { } while (0) 543 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 544 545 546 int total_ps_buffered; /* total number of all buffered unicast and 547 * multicast packets for power saving stations 548 */ 549 int wifi_wme_noack_test; 550 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 551 552 unsigned int enabled_modes; /* bitfield of allowed modes; 553 * (1 << MODE_*) */ 554 unsigned int hw_modes; /* bitfield of supported hardware modes; 555 * (1 << MODE_*) */ 556 557 #ifdef CONFIG_MAC80211_DEBUGFS 558 struct local_debugfsdentries { 559 struct dentry *channel; 560 struct dentry *frequency; 561 struct dentry *antenna_sel_tx; 562 struct dentry *antenna_sel_rx; 563 struct dentry *bridge_packets; 564 struct dentry *rts_threshold; 565 struct dentry *fragmentation_threshold; 566 struct dentry *short_retry_limit; 567 struct dentry *long_retry_limit; 568 struct dentry *total_ps_buffered; 569 struct dentry *mode; 570 struct dentry *wep_iv; 571 struct dentry *modes; 572 struct dentry *statistics; 573 struct local_debugfsdentries_statsdentries { 574 struct dentry *transmitted_fragment_count; 575 struct dentry *multicast_transmitted_frame_count; 576 struct dentry *failed_count; 577 struct dentry *retry_count; 578 struct dentry *multiple_retry_count; 579 struct dentry *frame_duplicate_count; 580 struct dentry *received_fragment_count; 581 struct dentry *multicast_received_frame_count; 582 struct dentry *transmitted_frame_count; 583 struct dentry *wep_undecryptable_count; 584 struct dentry *num_scans; 585 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 586 struct dentry *tx_handlers_drop; 587 struct dentry *tx_handlers_queued; 588 struct dentry *tx_handlers_drop_unencrypted; 589 struct dentry *tx_handlers_drop_fragment; 590 struct dentry *tx_handlers_drop_wep; 591 struct dentry *tx_handlers_drop_not_assoc; 592 struct dentry *tx_handlers_drop_unauth_port; 593 struct dentry *rx_handlers_drop; 594 struct dentry *rx_handlers_queued; 595 struct dentry *rx_handlers_drop_nullfunc; 596 struct dentry *rx_handlers_drop_defrag; 597 struct dentry *rx_handlers_drop_short; 598 struct dentry *rx_handlers_drop_passive_scan; 599 struct dentry *tx_expand_skb_head; 600 struct dentry *tx_expand_skb_head_cloned; 601 struct dentry *rx_expand_skb_head; 602 struct dentry *rx_expand_skb_head2; 603 struct dentry *rx_handlers_fragments; 604 struct dentry *tx_status_drop; 605 struct dentry *wme_tx_queue; 606 struct dentry *wme_rx_queue; 607 #endif 608 struct dentry *dot11ACKFailureCount; 609 struct dentry *dot11RTSFailureCount; 610 struct dentry *dot11FCSErrorCount; 611 struct dentry *dot11RTSSuccessCount; 612 } stats; 613 struct dentry *stations; 614 struct dentry *keys; 615 } debugfs; 616 #endif 617 }; 618 619 static inline struct ieee80211_local *hw_to_local( 620 struct ieee80211_hw *hw) 621 { 622 return container_of(hw, struct ieee80211_local, hw); 623 } 624 625 static inline struct ieee80211_hw *local_to_hw( 626 struct ieee80211_local *local) 627 { 628 return &local->hw; 629 } 630 631 enum ieee80211_link_state_t { 632 IEEE80211_LINK_STATE_XOFF = 0, 633 IEEE80211_LINK_STATE_PENDING, 634 }; 635 636 struct sta_attribute { 637 struct attribute attr; 638 ssize_t (*show)(const struct sta_info *, char *buf); 639 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 640 }; 641 642 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) 643 { 644 /* 645 * This format has been mandated by the IEEE specifications, 646 * so this line may not be changed to use the __set_bit() format. 647 */ 648 bss->tim[aid / 8] |= (1 << (aid % 8)); 649 } 650 651 static inline void bss_tim_set(struct ieee80211_local *local, 652 struct ieee80211_if_ap *bss, u16 aid) 653 { 654 read_lock_bh(&local->sta_lock); 655 __bss_tim_set(bss, aid); 656 read_unlock_bh(&local->sta_lock); 657 } 658 659 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid) 660 { 661 /* 662 * This format has been mandated by the IEEE specifications, 663 * so this line may not be changed to use the __clear_bit() format. 664 */ 665 bss->tim[aid / 8] &= ~(1 << (aid % 8)); 666 } 667 668 static inline void bss_tim_clear(struct ieee80211_local *local, 669 struct ieee80211_if_ap *bss, u16 aid) 670 { 671 read_lock_bh(&local->sta_lock); 672 __bss_tim_clear(bss, aid); 673 read_unlock_bh(&local->sta_lock); 674 } 675 676 /** 677 * ieee80211_is_erp_rate - Check if a rate is an ERP rate 678 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 679 * @rate: Transmission rate to check, in 100 kbps 680 * 681 * Check if a given rate is an Extended Rate PHY (ERP) rate. 682 */ 683 static inline int ieee80211_is_erp_rate(int phymode, int rate) 684 { 685 if (phymode == MODE_IEEE80211G) { 686 if (rate != 10 && rate != 20 && 687 rate != 55 && rate != 110) 688 return 1; 689 } 690 return 0; 691 } 692 693 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 694 { 695 return compare_ether_addr(raddr, addr) == 0 || 696 is_broadcast_ether_addr(raddr); 697 } 698 699 700 /* ieee80211.c */ 701 int ieee80211_hw_config(struct ieee80211_local *local); 702 int ieee80211_if_config(struct net_device *dev); 703 int ieee80211_if_config_beacon(struct net_device *dev); 704 void ieee80211_prepare_rates(struct ieee80211_local *local, 705 struct ieee80211_hw_mode *mode); 706 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 707 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 708 void ieee80211_if_setup(struct net_device *dev); 709 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local, 710 int phymode, int hwrate); 711 712 /* ieee80211_ioctl.c */ 713 extern const struct iw_handler_def ieee80211_iw_handler_def; 714 715 716 /* Least common multiple of the used rates (in 100 kbps). This is used to 717 * calculate rate_inv values for each rate so that only integers are needed. */ 718 #define CHAN_UTIL_RATE_LCM 95040 719 /* 1 usec is 1/8 * (95040/10) = 1188 */ 720 #define CHAN_UTIL_PER_USEC 1188 721 /* Amount of bits to shift the result right to scale the total utilization 722 * to values that will not wrap around 32-bit integers. */ 723 #define CHAN_UTIL_SHIFT 9 724 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 725 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 726 * raw value with about 23 should give utilization in 10th of a percentage 727 * (1/1000). However, utilization is only estimated and not all intervals 728 * between frames etc. are calculated. 18 seems to give numbers that are closer 729 * to the real maximum. */ 730 #define CHAN_UTIL_PER_10MS 18 731 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 732 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 733 734 735 /* ieee80211_ioctl.c */ 736 int ieee80211_set_compression(struct ieee80211_local *local, 737 struct net_device *dev, struct sta_info *sta); 738 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 739 /* ieee80211_sta.c */ 740 void ieee80211_sta_timer(unsigned long data); 741 void ieee80211_sta_work(struct work_struct *work); 742 void ieee80211_sta_scan_work(struct work_struct *work); 743 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 744 struct ieee80211_rx_status *rx_status); 745 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 746 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 747 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 748 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 749 void ieee80211_sta_req_auth(struct net_device *dev, 750 struct ieee80211_if_sta *ifsta); 751 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 752 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, 753 struct ieee80211_rx_status *rx_status); 754 void ieee80211_rx_bss_list_init(struct net_device *dev); 755 void ieee80211_rx_bss_list_deinit(struct net_device *dev); 756 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 757 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 758 struct sk_buff *skb, u8 *bssid, 759 u8 *addr); 760 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 761 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 762 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes); 763 void ieee80211_reset_erp_info(struct net_device *dev); 764 765 /* ieee80211_iface.c */ 766 int ieee80211_if_add(struct net_device *dev, const char *name, 767 struct net_device **new_dev, int type); 768 void ieee80211_if_set_type(struct net_device *dev, int type); 769 void ieee80211_if_reinit(struct net_device *dev); 770 void __ieee80211_if_del(struct ieee80211_local *local, 771 struct ieee80211_sub_if_data *sdata); 772 int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 773 void ieee80211_if_free(struct net_device *dev); 774 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 775 776 /* regdomain.c */ 777 void ieee80211_regdomain_init(void); 778 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); 779 780 /* rx handling */ 781 extern ieee80211_rx_handler ieee80211_rx_pre_handlers[]; 782 extern ieee80211_rx_handler ieee80211_rx_handlers[]; 783 784 /* tx handling */ 785 extern ieee80211_tx_handler ieee80211_tx_handlers[]; 786 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 787 void ieee80211_tx_pending(unsigned long data); 788 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 789 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 790 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 791 792 /* utility functions/constants */ 793 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 794 extern const unsigned char rfc1042_header[6]; 795 extern const unsigned char bridge_tunnel_header[6]; 796 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len); 797 int ieee80211_is_eapol(const struct sk_buff *skb); 798 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 799 int rate, int erp, int short_preamble); 800 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx, 801 struct ieee80211_hdr *hdr); 802 803 #endif /* IEEE80211_I_H */ 804