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 u8 *ht_ie; 93 size_t ht_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 #define IEEE80211_TXRXD_RX_AMSDU BIT(7) 127 struct ieee80211_txrx_data { 128 struct sk_buff *skb; 129 struct net_device *dev; 130 struct ieee80211_local *local; 131 struct ieee80211_sub_if_data *sdata; 132 struct sta_info *sta; 133 u16 fc, ethertype; 134 struct ieee80211_key *key; 135 unsigned int flags; 136 union { 137 struct { 138 struct ieee80211_tx_control *control; 139 struct ieee80211_hw_mode *mode; 140 struct ieee80211_rate *rate; 141 /* use this rate (if set) for last fragment; rate can 142 * be set to lower rate for the first fragments, e.g., 143 * when using CTS protection with IEEE 802.11g. */ 144 struct ieee80211_rate *last_frag_rate; 145 int last_frag_hwrate; 146 147 /* Extra fragments (in addition to the first fragment 148 * in skb) */ 149 int num_extra_frag; 150 struct sk_buff **extra_frag; 151 } tx; 152 struct { 153 struct ieee80211_rx_status *status; 154 int sent_ps_buffered; 155 int queue; 156 int load; 157 u32 tkip_iv32; 158 u16 tkip_iv16; 159 } rx; 160 } u; 161 }; 162 163 /* flags used in struct ieee80211_tx_packet_data.flags */ 164 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0) 165 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1) 166 #define IEEE80211_TXPD_REQUEUE BIT(2) 167 #define IEEE80211_TXPD_EAPOL_FRAME BIT(3) 168 /* Stored in sk_buff->cb */ 169 struct ieee80211_tx_packet_data { 170 int ifindex; 171 unsigned long jiffies; 172 unsigned int flags; 173 u8 queue; 174 }; 175 176 struct ieee80211_tx_stored_packet { 177 struct ieee80211_tx_control control; 178 struct sk_buff *skb; 179 int num_extra_frag; 180 struct sk_buff **extra_frag; 181 int last_frag_rateidx; 182 int last_frag_hwrate; 183 struct ieee80211_rate *last_frag_rate; 184 unsigned int last_frag_rate_ctrl_probe; 185 }; 186 187 typedef ieee80211_txrx_result (*ieee80211_tx_handler) 188 (struct ieee80211_txrx_data *tx); 189 190 typedef ieee80211_txrx_result (*ieee80211_rx_handler) 191 (struct ieee80211_txrx_data *rx); 192 193 struct beacon_data { 194 u8 *head, *tail; 195 int head_len, tail_len; 196 int dtim_period; 197 }; 198 199 struct ieee80211_if_ap { 200 struct beacon_data *beacon; 201 202 struct list_head vlans; 203 204 u8 ssid[IEEE80211_MAX_SSID_LEN]; 205 size_t ssid_len; 206 207 /* yes, this looks ugly, but guarantees that we can later use 208 * bitmap_empty :) 209 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 210 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 211 atomic_t num_sta_ps; /* number of stations in PS mode */ 212 struct sk_buff_head ps_bc_buf; 213 int dtim_count; 214 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 215 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 216 int num_beacons; /* number of TXed beacon frames for this BSS */ 217 }; 218 219 struct ieee80211_if_wds { 220 u8 remote_addr[ETH_ALEN]; 221 struct sta_info *sta; 222 }; 223 224 struct ieee80211_if_vlan { 225 struct ieee80211_sub_if_data *ap; 226 struct list_head list; 227 }; 228 229 /* flags used in struct ieee80211_if_sta.flags */ 230 #define IEEE80211_STA_SSID_SET BIT(0) 231 #define IEEE80211_STA_BSSID_SET BIT(1) 232 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 233 #define IEEE80211_STA_AUTHENTICATED BIT(3) 234 #define IEEE80211_STA_ASSOCIATED BIT(4) 235 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 236 #define IEEE80211_STA_CREATE_IBSS BIT(6) 237 #define IEEE80211_STA_MIXED_CELL BIT(7) 238 #define IEEE80211_STA_WMM_ENABLED BIT(8) 239 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 240 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 241 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 242 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13) 243 struct ieee80211_if_sta { 244 enum { 245 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 246 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 247 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 248 } state; 249 struct timer_list timer; 250 struct work_struct work; 251 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 252 u8 ssid[IEEE80211_MAX_SSID_LEN]; 253 size_t ssid_len; 254 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 255 size_t scan_ssid_len; 256 u16 aid; 257 u16 ap_capab, capab; 258 u8 *extra_ie; /* to be added to the end of AssocReq */ 259 size_t extra_ie_len; 260 261 /* The last AssocReq/Resp IEs */ 262 u8 *assocreq_ies, *assocresp_ies; 263 size_t assocreq_ies_len, assocresp_ies_len; 264 265 int auth_tries, assoc_tries; 266 267 unsigned int flags; 268 #define IEEE80211_STA_REQ_SCAN 0 269 #define IEEE80211_STA_REQ_AUTH 1 270 #define IEEE80211_STA_REQ_RUN 2 271 unsigned long request; 272 struct sk_buff_head skb_queue; 273 274 unsigned long last_probe; 275 276 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 277 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 278 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 279 unsigned int auth_algs; /* bitfield of allowed auth algs */ 280 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 281 int auth_transaction; 282 283 unsigned long ibss_join_req; 284 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 285 u32 supp_rates_bits; 286 287 int wmm_last_param_set; 288 }; 289 290 291 /* flags used in struct ieee80211_sub_if_data.flags */ 292 #define IEEE80211_SDATA_ALLMULTI BIT(0) 293 #define IEEE80211_SDATA_PROMISC BIT(1) 294 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2) 295 struct ieee80211_sub_if_data { 296 struct list_head list; 297 298 struct wireless_dev wdev; 299 300 /* keys */ 301 struct list_head key_list; 302 303 struct net_device *dev; 304 struct ieee80211_local *local; 305 306 unsigned int flags; 307 308 int drop_unencrypted; 309 /* 310 * IEEE 802.1X Port access control in effect, 311 * drop packets to/from unauthorized port 312 */ 313 int ieee802_1x_pac; 314 315 u16 sequence; 316 317 /* Fragment table for host-based reassembly */ 318 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 319 unsigned int fragment_next; 320 321 #define NUM_DEFAULT_KEYS 4 322 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 323 struct ieee80211_key *default_key; 324 325 /* 326 * BSS configuration for this interface. 327 * 328 * FIXME: I feel bad putting this here when we already have a 329 * bss pointer, but the bss pointer is just wrong when 330 * you have multiple virtual STA mode interfaces... 331 * This needs to be fixed. 332 */ 333 struct ieee80211_bss_conf bss_conf; 334 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 335 336 union { 337 struct ieee80211_if_ap ap; 338 struct ieee80211_if_wds wds; 339 struct ieee80211_if_vlan vlan; 340 struct ieee80211_if_sta sta; 341 } u; 342 int channel_use; 343 int channel_use_raw; 344 345 #ifdef CONFIG_MAC80211_DEBUGFS 346 struct dentry *debugfsdir; 347 union { 348 struct { 349 struct dentry *channel_use; 350 struct dentry *drop_unencrypted; 351 struct dentry *ieee802_1x_pac; 352 struct dentry *state; 353 struct dentry *bssid; 354 struct dentry *prev_bssid; 355 struct dentry *ssid_len; 356 struct dentry *aid; 357 struct dentry *ap_capab; 358 struct dentry *capab; 359 struct dentry *extra_ie_len; 360 struct dentry *auth_tries; 361 struct dentry *assoc_tries; 362 struct dentry *auth_algs; 363 struct dentry *auth_alg; 364 struct dentry *auth_transaction; 365 struct dentry *flags; 366 } sta; 367 struct { 368 struct dentry *channel_use; 369 struct dentry *drop_unencrypted; 370 struct dentry *ieee802_1x_pac; 371 struct dentry *num_sta_ps; 372 struct dentry *dtim_count; 373 struct dentry *num_beacons; 374 struct dentry *force_unicast_rateidx; 375 struct dentry *max_ratectrl_rateidx; 376 struct dentry *num_buffered_multicast; 377 } ap; 378 struct { 379 struct dentry *channel_use; 380 struct dentry *drop_unencrypted; 381 struct dentry *ieee802_1x_pac; 382 struct dentry *peer; 383 } wds; 384 struct { 385 struct dentry *channel_use; 386 struct dentry *drop_unencrypted; 387 struct dentry *ieee802_1x_pac; 388 } vlan; 389 struct { 390 struct dentry *mode; 391 } monitor; 392 struct dentry *default_key; 393 } debugfs; 394 #endif 395 /* must be last, dynamically sized area in this! */ 396 struct ieee80211_vif vif; 397 }; 398 399 static inline 400 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 401 { 402 return container_of(p, struct ieee80211_sub_if_data, vif); 403 } 404 405 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 406 407 enum { 408 IEEE80211_RX_MSG = 1, 409 IEEE80211_TX_STATUS_MSG = 2, 410 }; 411 412 struct ieee80211_local { 413 /* embed the driver visible part. 414 * don't cast (use the static inlines below), but we keep 415 * it first anyway so they become a no-op */ 416 struct ieee80211_hw hw; 417 418 const struct ieee80211_ops *ops; 419 420 /* List of registered struct ieee80211_hw_mode */ 421 struct list_head modes_list; 422 423 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 424 int open_count; 425 int monitors; 426 unsigned int filter_flags; /* FIF_* */ 427 struct iw_statistics wstats; 428 u8 wstats_flags; 429 int tx_headroom; /* required headroom for hardware/radiotap */ 430 431 enum { 432 IEEE80211_DEV_UNINITIALIZED = 0, 433 IEEE80211_DEV_REGISTERED, 434 IEEE80211_DEV_UNREGISTERED, 435 } reg_state; 436 437 /* Tasklet and skb queue to process calls from IRQ mode. All frames 438 * added to skb_queue will be processed, but frames in 439 * skb_queue_unreliable may be dropped if the total length of these 440 * queues increases over the limit. */ 441 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 442 struct tasklet_struct tasklet; 443 struct sk_buff_head skb_queue; 444 struct sk_buff_head skb_queue_unreliable; 445 446 /* Station data structures */ 447 rwlock_t sta_lock; /* protects STA data structures */ 448 int num_sta; /* number of stations in sta_list */ 449 struct list_head sta_list; 450 struct sta_info *sta_hash[STA_HASH_SIZE]; 451 struct timer_list sta_cleanup; 452 453 unsigned long state[NUM_TX_DATA_QUEUES]; 454 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 455 struct tasklet_struct tx_pending_tasklet; 456 457 /* number of interfaces with corresponding IFF_ flags */ 458 atomic_t iff_allmultis, iff_promiscs; 459 460 struct rate_control_ref *rate_ctrl; 461 462 /* Supported and basic rate filters for different modes. These are 463 * pointers to -1 terminated lists and rates in 100 kbps units. */ 464 int *supp_rates[NUM_IEEE80211_MODES]; 465 int *basic_rates[NUM_IEEE80211_MODES]; 466 467 int rts_threshold; 468 int fragmentation_threshold; 469 int short_retry_limit; /* dot11ShortRetryLimit */ 470 int long_retry_limit; /* dot11LongRetryLimit */ 471 472 struct crypto_blkcipher *wep_tx_tfm; 473 struct crypto_blkcipher *wep_rx_tfm; 474 u32 wep_iv; 475 476 int bridge_packets; /* bridge packets between associated stations and 477 * deliver multicast frames both back to wireless 478 * media and to the local net stack */ 479 480 ieee80211_rx_handler *rx_pre_handlers; 481 ieee80211_rx_handler *rx_handlers; 482 ieee80211_tx_handler *tx_handlers; 483 484 struct list_head interfaces; 485 486 bool sta_sw_scanning; 487 bool sta_hw_scanning; 488 int scan_channel_idx; 489 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 490 unsigned long last_scan_completed; 491 struct delayed_work scan_work; 492 struct net_device *scan_dev; 493 struct ieee80211_channel *oper_channel, *scan_channel; 494 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 495 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 496 size_t scan_ssid_len; 497 struct list_head sta_bss_list; 498 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 499 spinlock_t sta_bss_lock; 500 501 /* SNMP counters */ 502 /* dot11CountersTable */ 503 u32 dot11TransmittedFragmentCount; 504 u32 dot11MulticastTransmittedFrameCount; 505 u32 dot11FailedCount; 506 u32 dot11RetryCount; 507 u32 dot11MultipleRetryCount; 508 u32 dot11FrameDuplicateCount; 509 u32 dot11ReceivedFragmentCount; 510 u32 dot11MulticastReceivedFrameCount; 511 u32 dot11TransmittedFrameCount; 512 u32 dot11WEPUndecryptableCount; 513 514 #ifdef CONFIG_MAC80211_LEDS 515 int tx_led_counter, rx_led_counter; 516 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 517 char tx_led_name[32], rx_led_name[32], 518 assoc_led_name[32], radio_led_name[32]; 519 #endif 520 521 u32 channel_use; 522 u32 channel_use_raw; 523 524 #ifdef CONFIG_MAC80211_DEBUGFS 525 struct work_struct sta_debugfs_add; 526 #endif 527 528 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 529 /* TX/RX handler statistics */ 530 unsigned int tx_handlers_drop; 531 unsigned int tx_handlers_queued; 532 unsigned int tx_handlers_drop_unencrypted; 533 unsigned int tx_handlers_drop_fragment; 534 unsigned int tx_handlers_drop_wep; 535 unsigned int tx_handlers_drop_not_assoc; 536 unsigned int tx_handlers_drop_unauth_port; 537 unsigned int rx_handlers_drop; 538 unsigned int rx_handlers_queued; 539 unsigned int rx_handlers_drop_nullfunc; 540 unsigned int rx_handlers_drop_defrag; 541 unsigned int rx_handlers_drop_short; 542 unsigned int rx_handlers_drop_passive_scan; 543 unsigned int tx_expand_skb_head; 544 unsigned int tx_expand_skb_head_cloned; 545 unsigned int rx_expand_skb_head; 546 unsigned int rx_expand_skb_head2; 547 unsigned int rx_handlers_fragments; 548 unsigned int tx_status_drop; 549 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 550 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 551 #define I802_DEBUG_INC(c) (c)++ 552 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 553 #define I802_DEBUG_INC(c) do { } while (0) 554 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 555 556 557 int total_ps_buffered; /* total number of all buffered unicast and 558 * multicast packets for power saving stations 559 */ 560 int wifi_wme_noack_test; 561 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 562 563 unsigned int enabled_modes; /* bitfield of allowed modes; 564 * (1 << MODE_*) */ 565 unsigned int hw_modes; /* bitfield of supported hardware modes; 566 * (1 << MODE_*) */ 567 568 #ifdef CONFIG_MAC80211_DEBUGFS 569 struct local_debugfsdentries { 570 struct dentry *channel; 571 struct dentry *frequency; 572 struct dentry *antenna_sel_tx; 573 struct dentry *antenna_sel_rx; 574 struct dentry *bridge_packets; 575 struct dentry *rts_threshold; 576 struct dentry *fragmentation_threshold; 577 struct dentry *short_retry_limit; 578 struct dentry *long_retry_limit; 579 struct dentry *total_ps_buffered; 580 struct dentry *mode; 581 struct dentry *wep_iv; 582 struct dentry *modes; 583 struct dentry *statistics; 584 struct local_debugfsdentries_statsdentries { 585 struct dentry *transmitted_fragment_count; 586 struct dentry *multicast_transmitted_frame_count; 587 struct dentry *failed_count; 588 struct dentry *retry_count; 589 struct dentry *multiple_retry_count; 590 struct dentry *frame_duplicate_count; 591 struct dentry *received_fragment_count; 592 struct dentry *multicast_received_frame_count; 593 struct dentry *transmitted_frame_count; 594 struct dentry *wep_undecryptable_count; 595 struct dentry *num_scans; 596 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 597 struct dentry *tx_handlers_drop; 598 struct dentry *tx_handlers_queued; 599 struct dentry *tx_handlers_drop_unencrypted; 600 struct dentry *tx_handlers_drop_fragment; 601 struct dentry *tx_handlers_drop_wep; 602 struct dentry *tx_handlers_drop_not_assoc; 603 struct dentry *tx_handlers_drop_unauth_port; 604 struct dentry *rx_handlers_drop; 605 struct dentry *rx_handlers_queued; 606 struct dentry *rx_handlers_drop_nullfunc; 607 struct dentry *rx_handlers_drop_defrag; 608 struct dentry *rx_handlers_drop_short; 609 struct dentry *rx_handlers_drop_passive_scan; 610 struct dentry *tx_expand_skb_head; 611 struct dentry *tx_expand_skb_head_cloned; 612 struct dentry *rx_expand_skb_head; 613 struct dentry *rx_expand_skb_head2; 614 struct dentry *rx_handlers_fragments; 615 struct dentry *tx_status_drop; 616 struct dentry *wme_tx_queue; 617 struct dentry *wme_rx_queue; 618 #endif 619 struct dentry *dot11ACKFailureCount; 620 struct dentry *dot11RTSFailureCount; 621 struct dentry *dot11FCSErrorCount; 622 struct dentry *dot11RTSSuccessCount; 623 } stats; 624 struct dentry *stations; 625 struct dentry *keys; 626 } debugfs; 627 #endif 628 }; 629 630 static inline struct ieee80211_local *hw_to_local( 631 struct ieee80211_hw *hw) 632 { 633 return container_of(hw, struct ieee80211_local, hw); 634 } 635 636 static inline struct ieee80211_hw *local_to_hw( 637 struct ieee80211_local *local) 638 { 639 return &local->hw; 640 } 641 642 enum ieee80211_link_state_t { 643 IEEE80211_LINK_STATE_XOFF = 0, 644 IEEE80211_LINK_STATE_PENDING, 645 }; 646 647 struct sta_attribute { 648 struct attribute attr; 649 ssize_t (*show)(const struct sta_info *, char *buf); 650 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 651 }; 652 653 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) 654 { 655 /* 656 * This format has been mandated by the IEEE specifications, 657 * so this line may not be changed to use the __set_bit() format. 658 */ 659 bss->tim[aid / 8] |= (1 << (aid % 8)); 660 } 661 662 static inline void bss_tim_set(struct ieee80211_local *local, 663 struct ieee80211_if_ap *bss, u16 aid) 664 { 665 read_lock_bh(&local->sta_lock); 666 __bss_tim_set(bss, aid); 667 read_unlock_bh(&local->sta_lock); 668 } 669 670 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid) 671 { 672 /* 673 * This format has been mandated by the IEEE specifications, 674 * so this line may not be changed to use the __clear_bit() format. 675 */ 676 bss->tim[aid / 8] &= ~(1 << (aid % 8)); 677 } 678 679 static inline void bss_tim_clear(struct ieee80211_local *local, 680 struct ieee80211_if_ap *bss, u16 aid) 681 { 682 read_lock_bh(&local->sta_lock); 683 __bss_tim_clear(bss, aid); 684 read_unlock_bh(&local->sta_lock); 685 } 686 687 /** 688 * ieee80211_is_erp_rate - Check if a rate is an ERP rate 689 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 690 * @rate: Transmission rate to check, in 100 kbps 691 * 692 * Check if a given rate is an Extended Rate PHY (ERP) rate. 693 */ 694 static inline int ieee80211_is_erp_rate(int phymode, int rate) 695 { 696 if (phymode == MODE_IEEE80211G) { 697 if (rate != 10 && rate != 20 && 698 rate != 55 && rate != 110) 699 return 1; 700 } 701 return 0; 702 } 703 704 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 705 { 706 return compare_ether_addr(raddr, addr) == 0 || 707 is_broadcast_ether_addr(raddr); 708 } 709 710 711 /* ieee80211.c */ 712 int ieee80211_hw_config(struct ieee80211_local *local); 713 int ieee80211_if_config(struct net_device *dev); 714 int ieee80211_if_config_beacon(struct net_device *dev); 715 void ieee80211_prepare_rates(struct ieee80211_local *local, 716 struct ieee80211_hw_mode *mode); 717 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 718 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 719 void ieee80211_if_setup(struct net_device *dev); 720 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local, 721 int phymode, int hwrate); 722 int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, 723 struct ieee80211_ht_info *req_ht_cap, 724 struct ieee80211_ht_bss_info *req_bss_cap); 725 726 /* ieee80211_ioctl.c */ 727 extern const struct iw_handler_def ieee80211_iw_handler_def; 728 729 730 /* Least common multiple of the used rates (in 100 kbps). This is used to 731 * calculate rate_inv values for each rate so that only integers are needed. */ 732 #define CHAN_UTIL_RATE_LCM 95040 733 /* 1 usec is 1/8 * (95040/10) = 1188 */ 734 #define CHAN_UTIL_PER_USEC 1188 735 /* Amount of bits to shift the result right to scale the total utilization 736 * to values that will not wrap around 32-bit integers. */ 737 #define CHAN_UTIL_SHIFT 9 738 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 739 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 740 * raw value with about 23 should give utilization in 10th of a percentage 741 * (1/1000). However, utilization is only estimated and not all intervals 742 * between frames etc. are calculated. 18 seems to give numbers that are closer 743 * to the real maximum. */ 744 #define CHAN_UTIL_PER_10MS 18 745 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 746 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 747 748 749 /* ieee80211_ioctl.c */ 750 int ieee80211_set_compression(struct ieee80211_local *local, 751 struct net_device *dev, struct sta_info *sta); 752 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 753 /* ieee80211_sta.c */ 754 void ieee80211_sta_timer(unsigned long data); 755 void ieee80211_sta_work(struct work_struct *work); 756 void ieee80211_sta_scan_work(struct work_struct *work); 757 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 758 struct ieee80211_rx_status *rx_status); 759 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 760 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 761 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 762 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 763 void ieee80211_sta_req_auth(struct net_device *dev, 764 struct ieee80211_if_sta *ifsta); 765 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 766 ieee80211_txrx_result ieee80211_sta_rx_scan(struct net_device *dev, 767 struct sk_buff *skb, 768 struct ieee80211_rx_status *rx_status); 769 void ieee80211_rx_bss_list_init(struct net_device *dev); 770 void ieee80211_rx_bss_list_deinit(struct net_device *dev); 771 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 772 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 773 struct sk_buff *skb, u8 *bssid, 774 u8 *addr); 775 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 776 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 777 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 778 u32 changed); 779 void ieee80211_reset_erp_info(struct net_device *dev); 780 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, 781 struct ieee80211_ht_info *ht_info); 782 int ieee80211_ht_addt_info_ie_to_ht_bss_info( 783 struct ieee80211_ht_addt_info *ht_add_info_ie, 784 struct ieee80211_ht_bss_info *bss_info); 785 void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da, 786 u16 tid, u16 initiator, u16 reason); 787 void sta_rx_agg_session_timer_expired(unsigned long data); 788 /* ieee80211_iface.c */ 789 int ieee80211_if_add(struct net_device *dev, const char *name, 790 struct net_device **new_dev, int type); 791 void ieee80211_if_set_type(struct net_device *dev, int type); 792 void ieee80211_if_reinit(struct net_device *dev); 793 void __ieee80211_if_del(struct ieee80211_local *local, 794 struct ieee80211_sub_if_data *sdata); 795 int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 796 void ieee80211_if_free(struct net_device *dev); 797 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 798 799 /* regdomain.c */ 800 void ieee80211_regdomain_init(void); 801 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); 802 803 /* rx handling */ 804 extern ieee80211_rx_handler ieee80211_rx_pre_handlers[]; 805 extern ieee80211_rx_handler ieee80211_rx_handlers[]; 806 807 /* tx handling */ 808 extern ieee80211_tx_handler ieee80211_tx_handlers[]; 809 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 810 void ieee80211_tx_pending(unsigned long data); 811 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 812 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 813 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 814 815 /* utility functions/constants */ 816 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 817 extern const unsigned char rfc1042_header[6]; 818 extern const unsigned char bridge_tunnel_header[6]; 819 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 820 enum ieee80211_if_types type); 821 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 822 int rate, int erp, int short_preamble); 823 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx, 824 struct ieee80211_hdr *hdr); 825 826 #endif /* IEEE80211_I_H */ 827