1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef IEEE80211_I_H 13 #define IEEE80211_I_H 14 15 #include <linux/kernel.h> 16 #include <linux/device.h> 17 #include <linux/if_ether.h> 18 #include <linux/interrupt.h> 19 #include <linux/list.h> 20 #include <linux/netdevice.h> 21 #include <linux/skbuff.h> 22 #include <linux/workqueue.h> 23 #include <linux/types.h> 24 #include <linux/spinlock.h> 25 #include <linux/etherdevice.h> 26 #include <net/ieee80211_radiotap.h> 27 #include <net/cfg80211.h> 28 #include <net/mac80211.h> 29 #include "key.h" 30 #include "sta_info.h" 31 32 struct ieee80211_local; 33 34 /* Maximum number of broadcast/multicast frames to buffer when some of the 35 * associated stations are using power saving. */ 36 #define AP_MAX_BC_BUFFER 128 37 38 /* Maximum number of frames buffered to all STAs, including multicast frames. 39 * Note: increasing this limit increases the potential memory requirement. Each 40 * frame can be up to about 2 kB long. */ 41 #define TOTAL_MAX_TX_BUFFER 512 42 43 /* Required encryption head and tailroom */ 44 #define IEEE80211_ENCRYPT_HEADROOM 8 45 #define IEEE80211_ENCRYPT_TAILROOM 18 46 47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 48 * reception of at least three fragmented frames. This limit can be increased 49 * by changing this define, at the cost of slower frame reassembly and 50 * increased memory use (about 2 kB of RAM per entry). */ 51 #define IEEE80211_FRAGMENT_MAX 4 52 53 /* 54 * Time after which we ignore scan results and no longer report/use 55 * them in any way. 56 */ 57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) 58 59 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 60 61 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 62 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ 63 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ 64 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ 65 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 66 67 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 68 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 69 70 struct ieee80211_fragment_entry { 71 unsigned long first_frag_time; 72 unsigned int seq; 73 unsigned int rx_queue; 74 unsigned int last_frag; 75 unsigned int extra_len; 76 struct sk_buff_head skb_list; 77 int ccmp; /* Whether fragments were encrypted with CCMP */ 78 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 79 }; 80 81 82 struct ieee80211_bss { 83 /* don't want to look up all the time */ 84 size_t ssid_len; 85 u8 ssid[IEEE80211_MAX_SSID_LEN]; 86 87 u8 dtim_period; 88 89 bool wmm_used; 90 bool uapsd_supported; 91 92 unsigned long last_probe_resp; 93 94 #ifdef CONFIG_MAC80211_MESH 95 u8 *mesh_id; 96 size_t mesh_id_len; 97 u8 *mesh_cfg; 98 #endif 99 100 #define IEEE80211_MAX_SUPP_RATES 32 101 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 102 size_t supp_rates_len; 103 104 /* 105 * During assocation, we save an ERP value from a probe response so 106 * that we can feed ERP info to the driver when handling the 107 * association completes. these fields probably won't be up-to-date 108 * otherwise, you probably don't want to use them. 109 */ 110 bool has_erp_value; 111 u8 erp_value; 112 }; 113 114 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 115 { 116 #ifdef CONFIG_MAC80211_MESH 117 return bss->mesh_cfg; 118 #endif 119 return NULL; 120 } 121 122 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 123 { 124 #ifdef CONFIG_MAC80211_MESH 125 return bss->mesh_id; 126 #endif 127 return NULL; 128 } 129 130 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 131 { 132 #ifdef CONFIG_MAC80211_MESH 133 return bss->mesh_id_len; 134 #endif 135 return 0; 136 } 137 138 139 typedef unsigned __bitwise__ ieee80211_tx_result; 140 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 141 #define TX_DROP ((__force ieee80211_tx_result) 1u) 142 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 143 144 #define IEEE80211_TX_FRAGMENTED BIT(0) 145 #define IEEE80211_TX_UNICAST BIT(1) 146 #define IEEE80211_TX_PS_BUFFERED BIT(2) 147 148 struct ieee80211_tx_data { 149 struct sk_buff *skb; 150 struct ieee80211_local *local; 151 struct ieee80211_sub_if_data *sdata; 152 struct sta_info *sta; 153 struct ieee80211_key *key; 154 155 struct ieee80211_channel *channel; 156 157 u16 ethertype; 158 unsigned int flags; 159 }; 160 161 162 typedef unsigned __bitwise__ ieee80211_rx_result; 163 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 164 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 165 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 166 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 167 168 #define IEEE80211_RX_IN_SCAN BIT(0) 169 /* frame is destined to interface currently processed (incl. multicast frames) */ 170 #define IEEE80211_RX_RA_MATCH BIT(1) 171 #define IEEE80211_RX_AMSDU BIT(2) 172 #define IEEE80211_RX_FRAGMENTED BIT(3) 173 /* only add flags here that do not change with subframes of an aMPDU */ 174 175 struct ieee80211_rx_data { 176 struct sk_buff *skb; 177 struct ieee80211_local *local; 178 struct ieee80211_sub_if_data *sdata; 179 struct sta_info *sta; 180 struct ieee80211_key *key; 181 182 unsigned int flags; 183 int queue; 184 u32 tkip_iv32; 185 u16 tkip_iv16; 186 }; 187 188 struct beacon_data { 189 u8 *head, *tail; 190 int head_len, tail_len; 191 int dtim_period; 192 }; 193 194 struct ieee80211_if_ap { 195 struct beacon_data *beacon; 196 197 struct list_head vlans; 198 199 /* yes, this looks ugly, but guarantees that we can later use 200 * bitmap_empty :) 201 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 202 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 203 struct sk_buff_head ps_bc_buf; 204 atomic_t num_sta_ps; /* number of stations in PS mode */ 205 int dtim_count; 206 }; 207 208 struct ieee80211_if_wds { 209 struct sta_info *sta; 210 u8 remote_addr[ETH_ALEN]; 211 }; 212 213 struct ieee80211_if_vlan { 214 struct list_head list; 215 216 /* used for all tx if the VLAN is configured to 4-addr mode */ 217 struct sta_info *sta; 218 }; 219 220 struct mesh_stats { 221 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 222 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 223 __u32 fwded_frames; /* Mesh total forwarded frames */ 224 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 225 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 226 atomic_t estab_plinks; 227 }; 228 229 #define PREQ_Q_F_START 0x1 230 #define PREQ_Q_F_REFRESH 0x2 231 struct mesh_preq_queue { 232 struct list_head list; 233 u8 dst[ETH_ALEN]; 234 u8 flags; 235 }; 236 237 enum ieee80211_work_type { 238 IEEE80211_WORK_ABORT, 239 IEEE80211_WORK_DIRECT_PROBE, 240 IEEE80211_WORK_AUTH, 241 IEEE80211_WORK_ASSOC_BEACON_WAIT, 242 IEEE80211_WORK_ASSOC, 243 IEEE80211_WORK_REMAIN_ON_CHANNEL, 244 }; 245 246 /** 247 * enum work_done_result - indicates what to do after work was done 248 * 249 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 250 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 251 * should be requeued. 252 */ 253 enum work_done_result { 254 WORK_DONE_DESTROY, 255 WORK_DONE_REQUEUE, 256 }; 257 258 struct ieee80211_work { 259 struct list_head list; 260 261 struct rcu_head rcu_head; 262 263 struct ieee80211_sub_if_data *sdata; 264 265 enum work_done_result (*done)(struct ieee80211_work *wk, 266 struct sk_buff *skb); 267 268 struct ieee80211_channel *chan; 269 enum nl80211_channel_type chan_type; 270 271 unsigned long timeout; 272 enum ieee80211_work_type type; 273 274 u8 filter_ta[ETH_ALEN]; 275 276 bool started; 277 278 union { 279 struct { 280 int tries; 281 u16 algorithm, transaction; 282 u8 ssid[IEEE80211_MAX_SSID_LEN]; 283 u8 ssid_len; 284 u8 key[WLAN_KEY_LEN_WEP104]; 285 u8 key_len, key_idx; 286 bool privacy; 287 } probe_auth; 288 struct { 289 struct cfg80211_bss *bss; 290 const u8 *supp_rates; 291 const u8 *ht_information_ie; 292 enum ieee80211_smps_mode smps; 293 int tries; 294 u16 capability; 295 u8 prev_bssid[ETH_ALEN]; 296 u8 ssid[IEEE80211_MAX_SSID_LEN]; 297 u8 ssid_len; 298 u8 supp_rates_len; 299 bool wmm_used, use_11n, uapsd_used; 300 } assoc; 301 struct { 302 u32 duration; 303 } remain; 304 }; 305 306 int ie_len; 307 /* must be last */ 308 u8 ie[0]; 309 }; 310 311 /* flags used in struct ieee80211_if_managed.flags */ 312 enum ieee80211_sta_flags { 313 IEEE80211_STA_BEACON_POLL = BIT(0), 314 IEEE80211_STA_CONNECTION_POLL = BIT(1), 315 IEEE80211_STA_CONTROL_PORT = BIT(2), 316 IEEE80211_STA_DISABLE_11N = BIT(4), 317 IEEE80211_STA_CSA_RECEIVED = BIT(5), 318 IEEE80211_STA_MFP_ENABLED = BIT(6), 319 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 320 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 321 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 322 }; 323 324 struct ieee80211_if_managed { 325 struct timer_list timer; 326 struct timer_list conn_mon_timer; 327 struct timer_list bcn_mon_timer; 328 struct timer_list chswitch_timer; 329 struct work_struct monitor_work; 330 struct work_struct chswitch_work; 331 struct work_struct beacon_connection_loss_work; 332 333 unsigned long probe_timeout; 334 int probe_send_count; 335 336 struct mutex mtx; 337 struct cfg80211_bss *associated; 338 339 u8 bssid[ETH_ALEN]; 340 341 u16 aid; 342 343 unsigned long timers_running; /* used for quiesce/restart */ 344 bool powersave; /* powersave requested for this iface */ 345 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 346 ap_smps; /* smps mode AP thinks we're in */ 347 348 unsigned int flags; 349 350 u32 beacon_crc; 351 352 enum { 353 IEEE80211_MFP_DISABLED, 354 IEEE80211_MFP_OPTIONAL, 355 IEEE80211_MFP_REQUIRED 356 } mfp; /* management frame protection */ 357 358 int wmm_last_param_set; 359 360 u8 use_4addr; 361 362 /* Signal strength from the last Beacon frame in the current BSS. */ 363 int last_beacon_signal; 364 365 /* 366 * Weighted average of the signal strength from Beacon frames in the 367 * current BSS. This is in units of 1/16 of the signal unit to maintain 368 * accuracy and to speed up calculations, i.e., the value need to be 369 * divided by 16 to get the actual value. 370 */ 371 int ave_beacon_signal; 372 373 /* 374 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 375 * that triggered a cqm event. 0 indicates that no event has been 376 * generated for the current association. 377 */ 378 int last_cqm_event_signal; 379 }; 380 381 struct ieee80211_if_ibss { 382 struct timer_list timer; 383 384 struct mutex mtx; 385 386 unsigned long last_scan_completed; 387 388 u32 basic_rates; 389 390 bool timer_running; 391 392 bool fixed_bssid; 393 bool fixed_channel; 394 bool privacy; 395 396 u8 bssid[ETH_ALEN]; 397 u8 ssid[IEEE80211_MAX_SSID_LEN]; 398 u8 ssid_len, ie_len; 399 u8 *ie; 400 struct ieee80211_channel *channel; 401 402 unsigned long ibss_join_req; 403 /* probe response/beacon for IBSS */ 404 struct sk_buff *presp, *skb; 405 406 enum { 407 IEEE80211_IBSS_MLME_SEARCH, 408 IEEE80211_IBSS_MLME_JOINED, 409 } state; 410 }; 411 412 struct ieee80211_if_mesh { 413 struct timer_list housekeeping_timer; 414 struct timer_list mesh_path_timer; 415 struct timer_list mesh_path_root_timer; 416 417 unsigned long timers_running; 418 419 unsigned long wrkq_flags; 420 421 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 422 size_t mesh_id_len; 423 /* Active Path Selection Protocol Identifier */ 424 u8 mesh_pp_id; 425 /* Active Path Selection Metric Identifier */ 426 u8 mesh_pm_id; 427 /* Congestion Control Mode Identifier */ 428 u8 mesh_cc_id; 429 /* Synchronization Protocol Identifier */ 430 u8 mesh_sp_id; 431 /* Authentication Protocol Identifier */ 432 u8 mesh_auth_id; 433 /* Local mesh Sequence Number */ 434 u32 sn; 435 /* Last used PREQ ID */ 436 u32 preq_id; 437 atomic_t mpaths; 438 /* Timestamp of last SN update */ 439 unsigned long last_sn_update; 440 /* Timestamp of last SN sent */ 441 unsigned long last_preq; 442 struct mesh_rmc *rmc; 443 spinlock_t mesh_preq_queue_lock; 444 struct mesh_preq_queue preq_queue; 445 int preq_queue_len; 446 struct mesh_stats mshstats; 447 struct mesh_config mshcfg; 448 u32 mesh_seqnum; 449 bool accepting_plinks; 450 }; 451 452 #ifdef CONFIG_MAC80211_MESH 453 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 454 do { (msh)->mshstats.name++; } while (0) 455 #else 456 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 457 do { } while (0) 458 #endif 459 460 /** 461 * enum ieee80211_sub_if_data_flags - virtual interface flags 462 * 463 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 464 * @IEEE80211_SDATA_PROMISC: interface is promisc 465 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 466 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 467 * associated stations and deliver multicast frames both 468 * back to wireless media and to the local net stack. 469 */ 470 enum ieee80211_sub_if_data_flags { 471 IEEE80211_SDATA_ALLMULTI = BIT(0), 472 IEEE80211_SDATA_PROMISC = BIT(1), 473 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 474 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 475 }; 476 477 struct ieee80211_sub_if_data { 478 struct list_head list; 479 480 struct wireless_dev wdev; 481 482 /* keys */ 483 struct list_head key_list; 484 485 struct net_device *dev; 486 struct ieee80211_local *local; 487 488 unsigned int flags; 489 490 int drop_unencrypted; 491 492 char name[IFNAMSIZ]; 493 494 /* 495 * keep track of whether the HT opmode (stored in 496 * vif.bss_info.ht_operation_mode) is valid. 497 */ 498 bool ht_opmode_valid; 499 500 /* Fragment table for host-based reassembly */ 501 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 502 unsigned int fragment_next; 503 504 #define NUM_DEFAULT_KEYS 4 505 #define NUM_DEFAULT_MGMT_KEYS 2 506 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 507 struct ieee80211_key *default_key; 508 struct ieee80211_key *default_mgmt_key; 509 510 u16 sequence_number; 511 512 struct work_struct work; 513 struct sk_buff_head skb_queue; 514 515 bool arp_filter_state; 516 517 /* 518 * AP this belongs to: self in AP mode and 519 * corresponding AP in VLAN mode, NULL for 520 * all others (might be needed later in IBSS) 521 */ 522 struct ieee80211_if_ap *bss; 523 524 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 525 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 526 527 union { 528 struct ieee80211_if_ap ap; 529 struct ieee80211_if_wds wds; 530 struct ieee80211_if_vlan vlan; 531 struct ieee80211_if_managed mgd; 532 struct ieee80211_if_ibss ibss; 533 #ifdef CONFIG_MAC80211_MESH 534 struct ieee80211_if_mesh mesh; 535 #endif 536 u32 mntr_flags; 537 } u; 538 539 #ifdef CONFIG_MAC80211_DEBUGFS 540 struct { 541 struct dentry *dir; 542 struct dentry *default_key; 543 struct dentry *default_mgmt_key; 544 } debugfs; 545 #endif 546 /* must be last, dynamically sized area in this! */ 547 struct ieee80211_vif vif; 548 }; 549 550 static inline 551 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 552 { 553 return container_of(p, struct ieee80211_sub_if_data, vif); 554 } 555 556 static inline void 557 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, 558 u8 mesh_id_len, u8 *mesh_id) 559 { 560 #ifdef CONFIG_MAC80211_MESH 561 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 562 ifmsh->mesh_id_len = mesh_id_len; 563 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); 564 #else 565 WARN_ON(1); 566 #endif 567 } 568 569 enum sdata_queue_type { 570 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 571 IEEE80211_SDATA_QUEUE_AGG_START = 1, 572 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 573 }; 574 575 enum { 576 IEEE80211_RX_MSG = 1, 577 IEEE80211_TX_STATUS_MSG = 2, 578 }; 579 580 enum queue_stop_reason { 581 IEEE80211_QUEUE_STOP_REASON_DRIVER, 582 IEEE80211_QUEUE_STOP_REASON_PS, 583 IEEE80211_QUEUE_STOP_REASON_CSA, 584 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 585 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 586 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 587 }; 588 589 /** 590 * mac80211 scan flags - currently active scan mode 591 * 592 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 593 * well be on the operating channel 594 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 595 * determine if we are on the operating channel or not 596 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning, 597 * gets only set in conjunction with SCAN_SW_SCANNING 598 */ 599 enum { 600 SCAN_SW_SCANNING, 601 SCAN_HW_SCANNING, 602 SCAN_OFF_CHANNEL, 603 }; 604 605 /** 606 * enum mac80211_scan_state - scan state machine states 607 * 608 * @SCAN_DECISION: Main entry point to the scan state machine, this state 609 * determines if we should keep on scanning or switch back to the 610 * operating channel 611 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 612 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 613 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 614 * about us leaving the channel and stop all associated STA interfaces 615 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 616 * AP about us being back and restart all associated STA interfaces 617 */ 618 enum mac80211_scan_state { 619 SCAN_DECISION, 620 SCAN_SET_CHANNEL, 621 SCAN_SEND_PROBE, 622 SCAN_LEAVE_OPER_CHANNEL, 623 SCAN_ENTER_OPER_CHANNEL, 624 }; 625 626 struct ieee80211_local { 627 /* embed the driver visible part. 628 * don't cast (use the static inlines below), but we keep 629 * it first anyway so they become a no-op */ 630 struct ieee80211_hw hw; 631 632 const struct ieee80211_ops *ops; 633 634 /* 635 * work stuff, potentially off-channel (in the future) 636 */ 637 struct mutex work_mtx; 638 struct list_head work_list; 639 struct timer_list work_timer; 640 struct work_struct work_work; 641 struct sk_buff_head work_skb_queue; 642 643 /* 644 * private workqueue to mac80211. mac80211 makes this accessible 645 * via ieee80211_queue_work() 646 */ 647 struct workqueue_struct *workqueue; 648 649 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 650 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 651 spinlock_t queue_stop_reason_lock; 652 653 int open_count; 654 int monitors, cooked_mntrs; 655 /* number of interfaces with corresponding FIF_ flags */ 656 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll; 657 unsigned int filter_flags; /* FIF_* */ 658 659 /* protects the aggregated multicast list and filter calls */ 660 spinlock_t filter_lock; 661 662 /* used for uploading changed mc list */ 663 struct work_struct reconfig_filter; 664 665 /* used to reconfigure hardware SM PS */ 666 struct work_struct recalc_smps; 667 668 /* aggregated multicast list */ 669 struct netdev_hw_addr_list mc_list; 670 671 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 672 673 /* 674 * suspended is true if we finished all the suspend _and_ we have 675 * not yet come up from resume. This is to be used by mac80211 676 * to ensure driver sanity during suspend and mac80211's own 677 * sanity. It can eventually be used for WoW as well. 678 */ 679 bool suspended; 680 681 /* 682 * Resuming is true while suspended, but when we're reprogramming the 683 * hardware -- at that time it's allowed to use ieee80211_queue_work() 684 * again even though some other parts of the stack are still suspended 685 * and we still drop received frames to avoid waking the stack. 686 */ 687 bool resuming; 688 689 /* 690 * quiescing is true during the suspend process _only_ to 691 * ease timer cancelling etc. 692 */ 693 bool quiescing; 694 695 /* device is started */ 696 bool started; 697 698 int tx_headroom; /* required headroom for hardware/radiotap */ 699 700 /* Tasklet and skb queue to process calls from IRQ mode. All frames 701 * added to skb_queue will be processed, but frames in 702 * skb_queue_unreliable may be dropped if the total length of these 703 * queues increases over the limit. */ 704 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 705 struct tasklet_struct tasklet; 706 struct sk_buff_head skb_queue; 707 struct sk_buff_head skb_queue_unreliable; 708 709 /* Station data */ 710 /* 711 * The mutex only protects the list and counter, 712 * reads are done in RCU. 713 * Additionally, the lock protects the hash table, 714 * the pending list and each BSS's TIM bitmap. 715 */ 716 struct mutex sta_mtx; 717 spinlock_t sta_lock; 718 unsigned long num_sta; 719 struct list_head sta_list, sta_pending_list; 720 struct sta_info *sta_hash[STA_HASH_SIZE]; 721 struct timer_list sta_cleanup; 722 struct work_struct sta_finish_work; 723 int sta_generation; 724 725 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 726 struct tasklet_struct tx_pending_tasklet; 727 728 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 729 730 /* number of interfaces with corresponding IFF_ flags */ 731 atomic_t iff_allmultis, iff_promiscs; 732 733 struct rate_control_ref *rate_ctrl; 734 735 struct crypto_blkcipher *wep_tx_tfm; 736 struct crypto_blkcipher *wep_rx_tfm; 737 u32 wep_iv; 738 739 /* see iface.c */ 740 struct list_head interfaces; 741 struct mutex iflist_mtx; 742 743 /* 744 * Key mutex, protects sdata's key_list and sta_info's 745 * key pointers (write access, they're RCU.) 746 */ 747 struct mutex key_mtx; 748 749 750 /* Scanning and BSS list */ 751 struct mutex scan_mtx; 752 unsigned long scanning; 753 struct cfg80211_ssid scan_ssid; 754 struct cfg80211_scan_request *int_scan_req; 755 struct cfg80211_scan_request *scan_req, *hw_scan_req; 756 struct ieee80211_channel *scan_channel; 757 enum ieee80211_band hw_scan_band; 758 int scan_channel_idx; 759 int scan_ies_len; 760 761 unsigned long leave_oper_channel_time; 762 enum mac80211_scan_state next_scan_state; 763 struct delayed_work scan_work; 764 struct ieee80211_sub_if_data *scan_sdata; 765 enum nl80211_channel_type _oper_channel_type; 766 struct ieee80211_channel *oper_channel, *csa_channel; 767 768 /* Temporary remain-on-channel for off-channel operations */ 769 struct ieee80211_channel *tmp_channel; 770 enum nl80211_channel_type tmp_channel_type; 771 772 /* SNMP counters */ 773 /* dot11CountersTable */ 774 u32 dot11TransmittedFragmentCount; 775 u32 dot11MulticastTransmittedFrameCount; 776 u32 dot11FailedCount; 777 u32 dot11RetryCount; 778 u32 dot11MultipleRetryCount; 779 u32 dot11FrameDuplicateCount; 780 u32 dot11ReceivedFragmentCount; 781 u32 dot11MulticastReceivedFrameCount; 782 u32 dot11TransmittedFrameCount; 783 784 #ifdef CONFIG_MAC80211_LEDS 785 int tx_led_counter, rx_led_counter; 786 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 787 char tx_led_name[32], rx_led_name[32], 788 assoc_led_name[32], radio_led_name[32]; 789 #endif 790 791 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 792 /* TX/RX handler statistics */ 793 unsigned int tx_handlers_drop; 794 unsigned int tx_handlers_queued; 795 unsigned int tx_handlers_drop_unencrypted; 796 unsigned int tx_handlers_drop_fragment; 797 unsigned int tx_handlers_drop_wep; 798 unsigned int tx_handlers_drop_not_assoc; 799 unsigned int tx_handlers_drop_unauth_port; 800 unsigned int rx_handlers_drop; 801 unsigned int rx_handlers_queued; 802 unsigned int rx_handlers_drop_nullfunc; 803 unsigned int rx_handlers_drop_defrag; 804 unsigned int rx_handlers_drop_short; 805 unsigned int rx_handlers_drop_passive_scan; 806 unsigned int tx_expand_skb_head; 807 unsigned int tx_expand_skb_head_cloned; 808 unsigned int rx_expand_skb_head; 809 unsigned int rx_expand_skb_head2; 810 unsigned int rx_handlers_fragments; 811 unsigned int tx_status_drop; 812 #define I802_DEBUG_INC(c) (c)++ 813 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 814 #define I802_DEBUG_INC(c) do { } while (0) 815 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 816 817 818 int total_ps_buffered; /* total number of all buffered unicast and 819 * multicast packets for power saving stations 820 */ 821 int wifi_wme_noack_test; 822 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 823 824 /* 825 * Bitmask of enabled u-apsd queues, 826 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 827 * to take effect. 828 */ 829 unsigned int uapsd_queues; 830 831 /* 832 * Maximum number of buffered frames AP can deliver during a 833 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 834 * Needs a new association to take effect. 835 */ 836 unsigned int uapsd_max_sp_len; 837 838 bool pspolling; 839 bool offchannel_ps_enabled; 840 /* 841 * PS can only be enabled when we have exactly one managed 842 * interface (and monitors) in PS, this then points there. 843 */ 844 struct ieee80211_sub_if_data *ps_sdata; 845 struct work_struct dynamic_ps_enable_work; 846 struct work_struct dynamic_ps_disable_work; 847 struct timer_list dynamic_ps_timer; 848 struct notifier_block network_latency_notifier; 849 struct notifier_block ifa_notifier; 850 851 /* 852 * The dynamic ps timeout configured from user space via WEXT - 853 * this will override whatever chosen by mac80211 internally. 854 */ 855 int dynamic_ps_forced_timeout; 856 int dynamic_ps_user_timeout; 857 bool disable_dynamic_ps; 858 859 int user_power_level; /* in dBm */ 860 int power_constr_level; /* in dBm */ 861 862 enum ieee80211_smps_mode smps_mode; 863 864 struct work_struct restart_work; 865 866 #ifdef CONFIG_MAC80211_DEBUGFS 867 struct local_debugfsdentries { 868 struct dentry *rcdir; 869 struct dentry *stations; 870 struct dentry *keys; 871 } debugfs; 872 #endif 873 }; 874 875 static inline struct ieee80211_sub_if_data * 876 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 877 { 878 return netdev_priv(dev); 879 } 880 881 /* this struct represents 802.11n's RA/TID combination */ 882 struct ieee80211_ra_tid { 883 u8 ra[ETH_ALEN]; 884 u16 tid; 885 }; 886 887 /* Parsed Information Elements */ 888 struct ieee802_11_elems { 889 u8 *ie_start; 890 size_t total_len; 891 892 /* pointers to IEs */ 893 u8 *ssid; 894 u8 *supp_rates; 895 u8 *fh_params; 896 u8 *ds_params; 897 u8 *cf_params; 898 struct ieee80211_tim_ie *tim; 899 u8 *ibss_params; 900 u8 *challenge; 901 u8 *wpa; 902 u8 *rsn; 903 u8 *erp_info; 904 u8 *ext_supp_rates; 905 u8 *wmm_info; 906 u8 *wmm_param; 907 struct ieee80211_ht_cap *ht_cap_elem; 908 struct ieee80211_ht_info *ht_info_elem; 909 struct ieee80211_meshconf_ie *mesh_config; 910 u8 *mesh_id; 911 u8 *peer_link; 912 u8 *preq; 913 u8 *prep; 914 u8 *perr; 915 struct ieee80211_rann_ie *rann; 916 u8 *ch_switch_elem; 917 u8 *country_elem; 918 u8 *pwr_constr_elem; 919 u8 *quiet_elem; /* first quite element */ 920 u8 *timeout_int; 921 922 /* length of them, respectively */ 923 u8 ssid_len; 924 u8 supp_rates_len; 925 u8 fh_params_len; 926 u8 ds_params_len; 927 u8 cf_params_len; 928 u8 tim_len; 929 u8 ibss_params_len; 930 u8 challenge_len; 931 u8 wpa_len; 932 u8 rsn_len; 933 u8 erp_info_len; 934 u8 ext_supp_rates_len; 935 u8 wmm_info_len; 936 u8 wmm_param_len; 937 u8 mesh_id_len; 938 u8 peer_link_len; 939 u8 preq_len; 940 u8 prep_len; 941 u8 perr_len; 942 u8 ch_switch_elem_len; 943 u8 country_elem_len; 944 u8 pwr_constr_elem_len; 945 u8 quiet_elem_len; 946 u8 num_of_quiet_elem; /* can be more the one */ 947 u8 timeout_int_len; 948 }; 949 950 static inline struct ieee80211_local *hw_to_local( 951 struct ieee80211_hw *hw) 952 { 953 return container_of(hw, struct ieee80211_local, hw); 954 } 955 956 static inline struct ieee80211_hw *local_to_hw( 957 struct ieee80211_local *local) 958 { 959 return &local->hw; 960 } 961 962 963 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 964 { 965 return compare_ether_addr(raddr, addr) == 0 || 966 is_broadcast_ether_addr(raddr); 967 } 968 969 970 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 971 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 972 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 973 u32 changed); 974 void ieee80211_configure_filter(struct ieee80211_local *local); 975 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 976 977 extern bool ieee80211_disable_40mhz_24ghz; 978 979 /* STA code */ 980 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 981 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 982 struct cfg80211_auth_request *req); 983 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 984 struct cfg80211_assoc_request *req); 985 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 986 struct cfg80211_deauth_request *req, 987 void *cookie); 988 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 989 struct cfg80211_disassoc_request *req, 990 void *cookie); 991 void ieee80211_send_pspoll(struct ieee80211_local *local, 992 struct ieee80211_sub_if_data *sdata); 993 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 994 int ieee80211_max_network_latency(struct notifier_block *nb, 995 unsigned long data, void *dummy); 996 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 997 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 998 struct ieee80211_channel_sw_ie *sw_elem, 999 struct ieee80211_bss *bss, 1000 u64 timestamp); 1001 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1002 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1003 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1004 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1005 struct sk_buff *skb); 1006 1007 /* IBSS code */ 1008 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1009 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1010 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1011 u8 *bssid, u8 *addr, u32 supp_rates, 1012 gfp_t gfp); 1013 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1014 struct cfg80211_ibss_params *params); 1015 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1016 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1017 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1018 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1019 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1020 struct sk_buff *skb); 1021 1022 /* mesh code */ 1023 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1024 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1025 struct sk_buff *skb); 1026 1027 /* scan/BSS handling */ 1028 void ieee80211_scan_work(struct work_struct *work); 1029 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1030 const u8 *ssid, u8 ssid_len, 1031 struct ieee80211_channel *chan); 1032 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1033 struct cfg80211_scan_request *req); 1034 void ieee80211_scan_cancel(struct ieee80211_local *local); 1035 ieee80211_rx_result 1036 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1037 1038 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1039 struct ieee80211_bss * 1040 ieee80211_bss_info_update(struct ieee80211_local *local, 1041 struct ieee80211_rx_status *rx_status, 1042 struct ieee80211_mgmt *mgmt, 1043 size_t len, 1044 struct ieee802_11_elems *elems, 1045 struct ieee80211_channel *channel, 1046 bool beacon); 1047 struct ieee80211_bss * 1048 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1049 u8 *ssid, u8 ssid_len); 1050 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1051 struct ieee80211_bss *bss); 1052 1053 /* off-channel helpers */ 1054 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local); 1055 void ieee80211_offchannel_stop_station(struct ieee80211_local *local); 1056 void ieee80211_offchannel_return(struct ieee80211_local *local, 1057 bool enable_beaconing); 1058 1059 /* interface handling */ 1060 int ieee80211_iface_init(void); 1061 void ieee80211_iface_exit(void); 1062 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1063 struct net_device **new_dev, enum nl80211_iftype type, 1064 struct vif_params *params); 1065 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1066 enum nl80211_iftype type); 1067 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1068 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1069 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1070 void ieee80211_recalc_idle(struct ieee80211_local *local); 1071 1072 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1073 { 1074 return netif_running(sdata->dev); 1075 } 1076 1077 /* tx handling */ 1078 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1079 void ieee80211_tx_pending(unsigned long data); 1080 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1081 struct net_device *dev); 1082 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1083 struct net_device *dev); 1084 1085 /* 1086 * radiotap header for status frames 1087 */ 1088 struct ieee80211_tx_status_rtap_hdr { 1089 struct ieee80211_radiotap_header hdr; 1090 u8 rate; 1091 u8 padding_for_rate; 1092 __le16 tx_flags; 1093 u8 data_retries; 1094 } __packed; 1095 1096 1097 /* HT */ 1098 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1099 struct ieee80211_ht_cap *ht_cap_ie, 1100 struct ieee80211_sta_ht_cap *ht_cap); 1101 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1102 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1103 const u8 *da, u16 tid, 1104 u16 initiator, u16 reason_code); 1105 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1106 enum ieee80211_smps_mode smps, const u8 *da, 1107 const u8 *bssid); 1108 1109 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1110 u16 initiator, u16 reason); 1111 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1112 u16 initiator, u16 reason); 1113 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta); 1114 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1115 struct sta_info *sta, 1116 struct ieee80211_mgmt *mgmt, size_t len); 1117 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1118 struct sta_info *sta, 1119 struct ieee80211_mgmt *mgmt, 1120 size_t len); 1121 void ieee80211_process_addba_request(struct ieee80211_local *local, 1122 struct sta_info *sta, 1123 struct ieee80211_mgmt *mgmt, 1124 size_t len); 1125 1126 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1127 enum ieee80211_back_parties initiator); 1128 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1129 enum ieee80211_back_parties initiator); 1130 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1131 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1132 void ieee80211_ba_session_work(struct work_struct *work); 1133 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1134 1135 /* Spectrum management */ 1136 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1137 struct ieee80211_mgmt *mgmt, 1138 size_t len); 1139 1140 /* Suspend/resume and hw reconfiguration */ 1141 int ieee80211_reconfig(struct ieee80211_local *local); 1142 void ieee80211_stop_device(struct ieee80211_local *local); 1143 1144 #ifdef CONFIG_PM 1145 int __ieee80211_suspend(struct ieee80211_hw *hw); 1146 1147 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1148 { 1149 return ieee80211_reconfig(hw_to_local(hw)); 1150 } 1151 #else 1152 static inline int __ieee80211_suspend(struct ieee80211_hw *hw) 1153 { 1154 return 0; 1155 } 1156 1157 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1158 { 1159 return 0; 1160 } 1161 #endif 1162 1163 /* utility functions/constants */ 1164 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1165 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1166 enum nl80211_iftype type); 1167 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1168 int rate, int erp, int short_preamble); 1169 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1170 struct ieee80211_hdr *hdr, const u8 *tsc, 1171 gfp_t gfp); 1172 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1173 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1174 void ieee802_11_parse_elems(u8 *start, size_t len, 1175 struct ieee802_11_elems *elems); 1176 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1177 struct ieee802_11_elems *elems, 1178 u64 filter, u32 crc); 1179 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1180 enum ieee80211_band band); 1181 1182 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1183 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1184 void ieee80211_dynamic_ps_timer(unsigned long data); 1185 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1186 struct ieee80211_sub_if_data *sdata, 1187 int powersave); 1188 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1189 struct ieee80211_hdr *hdr); 1190 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1191 1192 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1193 enum queue_stop_reason reason); 1194 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1195 enum queue_stop_reason reason); 1196 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1197 enum queue_stop_reason reason); 1198 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1199 enum queue_stop_reason reason); 1200 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1201 struct sk_buff *skb); 1202 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1203 struct sk_buff_head *skbs); 1204 1205 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1206 u16 transaction, u16 auth_alg, 1207 u8 *extra, size_t extra_len, const u8 *bssid, 1208 const u8 *key, u8 key_len, u8 key_idx); 1209 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1210 const u8 *ie, size_t ie_len, 1211 enum ieee80211_band band); 1212 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1213 const u8 *ssid, size_t ssid_len, 1214 const u8 *ie, size_t ie_len); 1215 1216 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1217 const size_t supp_rates_len, 1218 const u8 *supp_rates); 1219 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1220 struct ieee802_11_elems *elems, 1221 enum ieee80211_band band); 1222 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1223 enum ieee80211_smps_mode smps_mode); 1224 void ieee80211_recalc_smps(struct ieee80211_local *local, 1225 struct ieee80211_sub_if_data *forsdata); 1226 1227 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1228 const u8 *ids, int n_ids, size_t offset); 1229 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1230 1231 /* internal work items */ 1232 void ieee80211_work_init(struct ieee80211_local *local); 1233 void ieee80211_add_work(struct ieee80211_work *wk); 1234 void free_work(struct ieee80211_work *wk); 1235 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1236 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1237 struct sk_buff *skb); 1238 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1239 struct ieee80211_channel *chan, 1240 enum nl80211_channel_type channel_type, 1241 unsigned int duration, u64 *cookie); 1242 int ieee80211_wk_cancel_remain_on_channel( 1243 struct ieee80211_sub_if_data *sdata, u64 cookie); 1244 1245 /* channel management */ 1246 enum ieee80211_chan_mode { 1247 CHAN_MODE_UNDEFINED, 1248 CHAN_MODE_HOPPING, 1249 CHAN_MODE_FIXED, 1250 }; 1251 1252 enum ieee80211_chan_mode 1253 ieee80211_get_channel_mode(struct ieee80211_local *local, 1254 struct ieee80211_sub_if_data *ignore); 1255 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1256 struct ieee80211_sub_if_data *sdata, 1257 enum nl80211_channel_type chantype); 1258 1259 #ifdef CONFIG_MAC80211_NOINLINE 1260 #define debug_noinline noinline 1261 #else 1262 #define debug_noinline 1263 #endif 1264 1265 #endif /* IEEE80211_I_H */ 1266