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 <linux/leds.h> 27 #include <net/ieee80211_radiotap.h> 28 #include <net/cfg80211.h> 29 #include <net/mac80211.h> 30 #include "key.h" 31 #include "sta_info.h" 32 33 struct ieee80211_local; 34 35 /* Maximum number of broadcast/multicast frames to buffer when some of the 36 * associated stations are using power saving. */ 37 #define AP_MAX_BC_BUFFER 128 38 39 /* Maximum number of frames buffered to all STAs, including multicast frames. 40 * Note: increasing this limit increases the potential memory requirement. Each 41 * frame can be up to about 2 kB long. */ 42 #define TOTAL_MAX_TX_BUFFER 512 43 44 /* Required encryption head and tailroom */ 45 #define IEEE80211_ENCRYPT_HEADROOM 8 46 #define IEEE80211_ENCRYPT_TAILROOM 18 47 48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 49 * reception of at least three fragmented frames. This limit can be increased 50 * by changing this define, at the cost of slower frame reassembly and 51 * increased memory use (about 2 kB of RAM per entry). */ 52 #define IEEE80211_FRAGMENT_MAX 4 53 54 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 55 56 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 57 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ 58 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ 59 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ 60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 61 62 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 63 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 64 65 struct ieee80211_fragment_entry { 66 unsigned long first_frag_time; 67 unsigned int seq; 68 unsigned int rx_queue; 69 unsigned int last_frag; 70 unsigned int extra_len; 71 struct sk_buff_head skb_list; 72 int ccmp; /* Whether fragments were encrypted with CCMP */ 73 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 74 }; 75 76 77 struct ieee80211_bss { 78 /* don't want to look up all the time */ 79 size_t ssid_len; 80 u8 ssid[IEEE80211_MAX_SSID_LEN]; 81 82 u8 dtim_period; 83 84 bool wmm_used; 85 bool uapsd_supported; 86 87 unsigned long last_probe_resp; 88 89 #ifdef CONFIG_MAC80211_MESH 90 u8 *mesh_id; 91 size_t mesh_id_len; 92 u8 *mesh_cfg; 93 #endif 94 95 #define IEEE80211_MAX_SUPP_RATES 32 96 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 97 size_t supp_rates_len; 98 99 /* 100 * During assocation, we save an ERP value from a probe response so 101 * that we can feed ERP info to the driver when handling the 102 * association completes. these fields probably won't be up-to-date 103 * otherwise, you probably don't want to use them. 104 */ 105 bool has_erp_value; 106 u8 erp_value; 107 }; 108 109 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 110 { 111 #ifdef CONFIG_MAC80211_MESH 112 return bss->mesh_cfg; 113 #endif 114 return NULL; 115 } 116 117 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 118 { 119 #ifdef CONFIG_MAC80211_MESH 120 return bss->mesh_id; 121 #endif 122 return NULL; 123 } 124 125 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 126 { 127 #ifdef CONFIG_MAC80211_MESH 128 return bss->mesh_id_len; 129 #endif 130 return 0; 131 } 132 133 134 typedef unsigned __bitwise__ ieee80211_tx_result; 135 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 136 #define TX_DROP ((__force ieee80211_tx_result) 1u) 137 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 138 139 #define IEEE80211_TX_FRAGMENTED BIT(0) 140 #define IEEE80211_TX_UNICAST BIT(1) 141 #define IEEE80211_TX_PS_BUFFERED BIT(2) 142 143 struct ieee80211_tx_data { 144 struct sk_buff *skb; 145 struct ieee80211_local *local; 146 struct ieee80211_sub_if_data *sdata; 147 struct sta_info *sta; 148 struct ieee80211_key *key; 149 150 struct ieee80211_channel *channel; 151 152 u16 ethertype; 153 unsigned int flags; 154 }; 155 156 157 typedef unsigned __bitwise__ ieee80211_rx_result; 158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 162 163 /** 164 * enum ieee80211_packet_rx_flags - packet RX flags 165 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 166 * (incl. multicast frames) 167 * @IEEE80211_RX_IN_SCAN: received while scanning 168 * @IEEE80211_RX_FRAGMENTED: fragmented frame 169 * @IEEE80211_RX_AMSDU: a-MSDU packet 170 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 171 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 172 * 173 * These are per-frame flags that are attached to a frame in the 174 * @rx_flags field of &struct ieee80211_rx_status. 175 */ 176 enum ieee80211_packet_rx_flags { 177 IEEE80211_RX_IN_SCAN = BIT(0), 178 IEEE80211_RX_RA_MATCH = BIT(1), 179 IEEE80211_RX_FRAGMENTED = BIT(2), 180 IEEE80211_RX_AMSDU = BIT(3), 181 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 182 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 183 }; 184 185 /** 186 * enum ieee80211_rx_flags - RX data flags 187 * 188 * @IEEE80211_RX_CMNTR: received on cooked monitor already 189 * 190 * These flags are used across handling multiple interfaces 191 * for a single frame. 192 */ 193 enum ieee80211_rx_flags { 194 IEEE80211_RX_CMNTR = BIT(0), 195 }; 196 197 struct ieee80211_rx_data { 198 struct sk_buff *skb; 199 struct ieee80211_local *local; 200 struct ieee80211_sub_if_data *sdata; 201 struct sta_info *sta; 202 struct ieee80211_key *key; 203 204 unsigned int flags; 205 int queue; 206 u32 tkip_iv32; 207 u16 tkip_iv16; 208 }; 209 210 struct beacon_data { 211 u8 *head, *tail; 212 int head_len, tail_len; 213 int dtim_period; 214 }; 215 216 struct ieee80211_if_ap { 217 struct beacon_data *beacon; 218 219 struct list_head vlans; 220 221 /* yes, this looks ugly, but guarantees that we can later use 222 * bitmap_empty :) 223 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 224 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 225 struct sk_buff_head ps_bc_buf; 226 atomic_t num_sta_ps; /* number of stations in PS mode */ 227 int dtim_count; 228 }; 229 230 struct ieee80211_if_wds { 231 struct sta_info *sta; 232 u8 remote_addr[ETH_ALEN]; 233 }; 234 235 struct ieee80211_if_vlan { 236 struct list_head list; 237 238 /* used for all tx if the VLAN is configured to 4-addr mode */ 239 struct sta_info *sta; 240 }; 241 242 struct mesh_stats { 243 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 244 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 245 __u32 fwded_frames; /* Mesh total forwarded frames */ 246 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 247 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 248 atomic_t estab_plinks; 249 }; 250 251 #define PREQ_Q_F_START 0x1 252 #define PREQ_Q_F_REFRESH 0x2 253 struct mesh_preq_queue { 254 struct list_head list; 255 u8 dst[ETH_ALEN]; 256 u8 flags; 257 }; 258 259 enum ieee80211_work_type { 260 IEEE80211_WORK_ABORT, 261 IEEE80211_WORK_DIRECT_PROBE, 262 IEEE80211_WORK_AUTH, 263 IEEE80211_WORK_ASSOC_BEACON_WAIT, 264 IEEE80211_WORK_ASSOC, 265 IEEE80211_WORK_REMAIN_ON_CHANNEL, 266 IEEE80211_WORK_OFFCHANNEL_TX, 267 }; 268 269 /** 270 * enum work_done_result - indicates what to do after work was done 271 * 272 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 273 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 274 * should be requeued. 275 */ 276 enum work_done_result { 277 WORK_DONE_DESTROY, 278 WORK_DONE_REQUEUE, 279 }; 280 281 struct ieee80211_work { 282 struct list_head list; 283 284 struct rcu_head rcu_head; 285 286 struct ieee80211_sub_if_data *sdata; 287 288 enum work_done_result (*done)(struct ieee80211_work *wk, 289 struct sk_buff *skb); 290 291 struct ieee80211_channel *chan; 292 enum nl80211_channel_type chan_type; 293 294 unsigned long timeout; 295 enum ieee80211_work_type type; 296 297 u8 filter_ta[ETH_ALEN]; 298 299 bool started; 300 301 union { 302 struct { 303 int tries; 304 u16 algorithm, transaction; 305 u8 ssid[IEEE80211_MAX_SSID_LEN]; 306 u8 ssid_len; 307 u8 key[WLAN_KEY_LEN_WEP104]; 308 u8 key_len, key_idx; 309 bool privacy; 310 } probe_auth; 311 struct { 312 struct cfg80211_bss *bss; 313 const u8 *supp_rates; 314 const u8 *ht_information_ie; 315 enum ieee80211_smps_mode smps; 316 int tries; 317 u16 capability; 318 u8 prev_bssid[ETH_ALEN]; 319 u8 ssid[IEEE80211_MAX_SSID_LEN]; 320 u8 ssid_len; 321 u8 supp_rates_len; 322 bool wmm_used, use_11n, uapsd_used; 323 } assoc; 324 struct { 325 u32 duration; 326 } remain; 327 struct { 328 struct sk_buff *frame; 329 u32 wait; 330 } offchan_tx; 331 }; 332 333 int ie_len; 334 /* must be last */ 335 u8 ie[0]; 336 }; 337 338 /* flags used in struct ieee80211_if_managed.flags */ 339 enum ieee80211_sta_flags { 340 IEEE80211_STA_BEACON_POLL = BIT(0), 341 IEEE80211_STA_CONNECTION_POLL = BIT(1), 342 IEEE80211_STA_CONTROL_PORT = BIT(2), 343 IEEE80211_STA_DISABLE_11N = BIT(4), 344 IEEE80211_STA_CSA_RECEIVED = BIT(5), 345 IEEE80211_STA_MFP_ENABLED = BIT(6), 346 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 347 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 348 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 349 }; 350 351 struct ieee80211_if_managed { 352 struct timer_list timer; 353 struct timer_list conn_mon_timer; 354 struct timer_list bcn_mon_timer; 355 struct timer_list chswitch_timer; 356 struct work_struct monitor_work; 357 struct work_struct chswitch_work; 358 struct work_struct beacon_connection_loss_work; 359 360 unsigned long beacon_timeout; 361 unsigned long probe_timeout; 362 int probe_send_count; 363 bool nullfunc_failed; 364 365 struct mutex mtx; 366 struct cfg80211_bss *associated; 367 368 u8 bssid[ETH_ALEN]; 369 370 u16 aid; 371 372 unsigned long timers_running; /* used for quiesce/restart */ 373 bool powersave; /* powersave requested for this iface */ 374 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 375 ap_smps, /* smps mode AP thinks we're in */ 376 driver_smps_mode; /* smps mode request */ 377 378 struct work_struct request_smps_work; 379 380 unsigned int flags; 381 382 bool beacon_crc_valid; 383 u32 beacon_crc; 384 385 enum { 386 IEEE80211_MFP_DISABLED, 387 IEEE80211_MFP_OPTIONAL, 388 IEEE80211_MFP_REQUIRED 389 } mfp; /* management frame protection */ 390 391 int wmm_last_param_set; 392 393 u8 use_4addr; 394 395 /* Signal strength from the last Beacon frame in the current BSS. */ 396 int last_beacon_signal; 397 398 /* 399 * Weighted average of the signal strength from Beacon frames in the 400 * current BSS. This is in units of 1/16 of the signal unit to maintain 401 * accuracy and to speed up calculations, i.e., the value need to be 402 * divided by 16 to get the actual value. 403 */ 404 int ave_beacon_signal; 405 406 /* 407 * Number of Beacon frames used in ave_beacon_signal. This can be used 408 * to avoid generating less reliable cqm events that would be based 409 * only on couple of received frames. 410 */ 411 unsigned int count_beacon_signal; 412 413 /* 414 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 415 * that triggered a cqm event. 0 indicates that no event has been 416 * generated for the current association. 417 */ 418 int last_cqm_event_signal; 419 }; 420 421 struct ieee80211_if_ibss { 422 struct timer_list timer; 423 424 struct mutex mtx; 425 426 unsigned long last_scan_completed; 427 428 u32 basic_rates; 429 430 bool timer_running; 431 432 bool fixed_bssid; 433 bool fixed_channel; 434 bool privacy; 435 436 u8 bssid[ETH_ALEN]; 437 u8 ssid[IEEE80211_MAX_SSID_LEN]; 438 u8 ssid_len, ie_len; 439 u8 *ie; 440 struct ieee80211_channel *channel; 441 442 unsigned long ibss_join_req; 443 /* probe response/beacon for IBSS */ 444 struct sk_buff *presp, *skb; 445 446 enum { 447 IEEE80211_IBSS_MLME_SEARCH, 448 IEEE80211_IBSS_MLME_JOINED, 449 } state; 450 }; 451 452 struct ieee80211_if_mesh { 453 struct timer_list housekeeping_timer; 454 struct timer_list mesh_path_timer; 455 struct timer_list mesh_path_root_timer; 456 457 unsigned long timers_running; 458 459 unsigned long wrkq_flags; 460 461 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 462 size_t mesh_id_len; 463 /* Active Path Selection Protocol Identifier */ 464 u8 mesh_pp_id; 465 /* Active Path Selection Metric Identifier */ 466 u8 mesh_pm_id; 467 /* Congestion Control Mode Identifier */ 468 u8 mesh_cc_id; 469 /* Synchronization Protocol Identifier */ 470 u8 mesh_sp_id; 471 /* Authentication Protocol Identifier */ 472 u8 mesh_auth_id; 473 /* Local mesh Sequence Number */ 474 u32 sn; 475 /* Last used PREQ ID */ 476 u32 preq_id; 477 atomic_t mpaths; 478 /* Timestamp of last SN update */ 479 unsigned long last_sn_update; 480 /* Timestamp of last SN sent */ 481 unsigned long last_preq; 482 struct mesh_rmc *rmc; 483 spinlock_t mesh_preq_queue_lock; 484 struct mesh_preq_queue preq_queue; 485 int preq_queue_len; 486 struct mesh_stats mshstats; 487 struct mesh_config mshcfg; 488 u32 mesh_seqnum; 489 bool accepting_plinks; 490 const u8 *vendor_ie; 491 u8 vendor_ie_len; 492 }; 493 494 #ifdef CONFIG_MAC80211_MESH 495 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 496 do { (msh)->mshstats.name++; } while (0) 497 #else 498 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 499 do { } while (0) 500 #endif 501 502 /** 503 * enum ieee80211_sub_if_data_flags - virtual interface flags 504 * 505 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 506 * @IEEE80211_SDATA_PROMISC: interface is promisc 507 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 508 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 509 * associated stations and deliver multicast frames both 510 * back to wireless media and to the local net stack. 511 */ 512 enum ieee80211_sub_if_data_flags { 513 IEEE80211_SDATA_ALLMULTI = BIT(0), 514 IEEE80211_SDATA_PROMISC = BIT(1), 515 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 516 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 517 }; 518 519 /** 520 * enum ieee80211_sdata_state_bits - virtual interface state bits 521 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 522 * mirrors netif_running() but is separate for interface type 523 * change handling while the interface is up 524 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 525 * mode, so queues are stopped 526 */ 527 enum ieee80211_sdata_state_bits { 528 SDATA_STATE_RUNNING, 529 SDATA_STATE_OFFCHANNEL, 530 }; 531 532 struct ieee80211_sub_if_data { 533 struct list_head list; 534 535 struct wireless_dev wdev; 536 537 /* keys */ 538 struct list_head key_list; 539 540 struct net_device *dev; 541 struct ieee80211_local *local; 542 543 unsigned int flags; 544 545 unsigned long state; 546 547 int drop_unencrypted; 548 549 char name[IFNAMSIZ]; 550 551 /* 552 * keep track of whether the HT opmode (stored in 553 * vif.bss_info.ht_operation_mode) is valid. 554 */ 555 bool ht_opmode_valid; 556 557 /* to detect idle changes */ 558 bool old_idle; 559 560 /* Fragment table for host-based reassembly */ 561 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 562 unsigned int fragment_next; 563 564 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 565 struct ieee80211_key *default_unicast_key, *default_multicast_key; 566 struct ieee80211_key *default_mgmt_key; 567 568 u16 sequence_number; 569 __be16 control_port_protocol; 570 bool control_port_no_encrypt; 571 572 struct work_struct work; 573 struct sk_buff_head skb_queue; 574 575 bool arp_filter_state; 576 577 /* 578 * AP this belongs to: self in AP mode and 579 * corresponding AP in VLAN mode, NULL for 580 * all others (might be needed later in IBSS) 581 */ 582 struct ieee80211_if_ap *bss; 583 584 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 585 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 586 587 union { 588 struct ieee80211_if_ap ap; 589 struct ieee80211_if_wds wds; 590 struct ieee80211_if_vlan vlan; 591 struct ieee80211_if_managed mgd; 592 struct ieee80211_if_ibss ibss; 593 struct ieee80211_if_mesh mesh; 594 u32 mntr_flags; 595 } u; 596 597 #ifdef CONFIG_MAC80211_DEBUGFS 598 struct { 599 struct dentry *dir; 600 struct dentry *subdir_stations; 601 struct dentry *default_unicast_key; 602 struct dentry *default_multicast_key; 603 struct dentry *default_mgmt_key; 604 } debugfs; 605 #endif 606 /* must be last, dynamically sized area in this! */ 607 struct ieee80211_vif vif; 608 }; 609 610 static inline 611 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 612 { 613 return container_of(p, struct ieee80211_sub_if_data, vif); 614 } 615 616 enum sdata_queue_type { 617 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 618 IEEE80211_SDATA_QUEUE_AGG_START = 1, 619 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 620 }; 621 622 enum { 623 IEEE80211_RX_MSG = 1, 624 IEEE80211_TX_STATUS_MSG = 2, 625 }; 626 627 enum queue_stop_reason { 628 IEEE80211_QUEUE_STOP_REASON_DRIVER, 629 IEEE80211_QUEUE_STOP_REASON_PS, 630 IEEE80211_QUEUE_STOP_REASON_CSA, 631 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 632 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 633 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 634 }; 635 636 #ifdef CONFIG_MAC80211_LEDS 637 struct tpt_led_trigger { 638 struct led_trigger trig; 639 char name[32]; 640 const struct ieee80211_tpt_blink *blink_table; 641 unsigned int blink_table_len; 642 struct timer_list timer; 643 unsigned long prev_traffic; 644 unsigned long tx_bytes, rx_bytes; 645 unsigned int active, want; 646 bool running; 647 }; 648 #endif 649 650 /** 651 * mac80211 scan flags - currently active scan mode 652 * 653 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 654 * well be on the operating channel 655 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 656 * determine if we are on the operating channel or not 657 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning, 658 * gets only set in conjunction with SCAN_SW_SCANNING 659 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 660 * that the scan completed. 661 * @SCAN_ABORTED: Set for our scan work function when the driver reported 662 * a scan complete for an aborted scan. 663 */ 664 enum { 665 SCAN_SW_SCANNING, 666 SCAN_HW_SCANNING, 667 SCAN_OFF_CHANNEL, 668 SCAN_COMPLETED, 669 SCAN_ABORTED, 670 }; 671 672 /** 673 * enum mac80211_scan_state - scan state machine states 674 * 675 * @SCAN_DECISION: Main entry point to the scan state machine, this state 676 * determines if we should keep on scanning or switch back to the 677 * operating channel 678 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 679 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 680 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 681 * about us leaving the channel and stop all associated STA interfaces 682 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 683 * AP about us being back and restart all associated STA interfaces 684 */ 685 enum mac80211_scan_state { 686 SCAN_DECISION, 687 SCAN_SET_CHANNEL, 688 SCAN_SEND_PROBE, 689 SCAN_LEAVE_OPER_CHANNEL, 690 SCAN_ENTER_OPER_CHANNEL, 691 }; 692 693 struct ieee80211_local { 694 /* embed the driver visible part. 695 * don't cast (use the static inlines below), but we keep 696 * it first anyway so they become a no-op */ 697 struct ieee80211_hw hw; 698 699 const struct ieee80211_ops *ops; 700 701 /* 702 * work stuff, potentially off-channel (in the future) 703 */ 704 struct list_head work_list; 705 struct timer_list work_timer; 706 struct work_struct work_work; 707 struct sk_buff_head work_skb_queue; 708 709 /* 710 * private workqueue to mac80211. mac80211 makes this accessible 711 * via ieee80211_queue_work() 712 */ 713 struct workqueue_struct *workqueue; 714 715 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 716 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 717 spinlock_t queue_stop_reason_lock; 718 719 int open_count; 720 int monitors, cooked_mntrs; 721 /* number of interfaces with corresponding FIF_ flags */ 722 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 723 fif_probe_req; 724 int probe_req_reg; 725 unsigned int filter_flags; /* FIF_* */ 726 727 bool wiphy_ciphers_allocated; 728 729 /* protects the aggregated multicast list and filter calls */ 730 spinlock_t filter_lock; 731 732 /* used for uploading changed mc list */ 733 struct work_struct reconfig_filter; 734 735 /* used to reconfigure hardware SM PS */ 736 struct work_struct recalc_smps; 737 738 /* aggregated multicast list */ 739 struct netdev_hw_addr_list mc_list; 740 741 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 742 743 /* 744 * suspended is true if we finished all the suspend _and_ we have 745 * not yet come up from resume. This is to be used by mac80211 746 * to ensure driver sanity during suspend and mac80211's own 747 * sanity. It can eventually be used for WoW as well. 748 */ 749 bool suspended; 750 751 /* 752 * Resuming is true while suspended, but when we're reprogramming the 753 * hardware -- at that time it's allowed to use ieee80211_queue_work() 754 * again even though some other parts of the stack are still suspended 755 * and we still drop received frames to avoid waking the stack. 756 */ 757 bool resuming; 758 759 /* 760 * quiescing is true during the suspend process _only_ to 761 * ease timer cancelling etc. 762 */ 763 bool quiescing; 764 765 /* device is started */ 766 bool started; 767 768 int tx_headroom; /* required headroom for hardware/radiotap */ 769 770 /* Tasklet and skb queue to process calls from IRQ mode. All frames 771 * added to skb_queue will be processed, but frames in 772 * skb_queue_unreliable may be dropped if the total length of these 773 * queues increases over the limit. */ 774 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 775 struct tasklet_struct tasklet; 776 struct sk_buff_head skb_queue; 777 struct sk_buff_head skb_queue_unreliable; 778 779 /* 780 * Internal FIFO queue which is shared between multiple rx path 781 * stages. Its main task is to provide a serialization mechanism, 782 * so all rx handlers can enjoy having exclusive access to their 783 * private data structures. 784 */ 785 struct sk_buff_head rx_skb_queue; 786 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 787 788 /* Station data */ 789 /* 790 * The mutex only protects the list and counter, 791 * reads are done in RCU. 792 * Additionally, the lock protects the hash table, 793 * the pending list and each BSS's TIM bitmap. 794 */ 795 struct mutex sta_mtx; 796 spinlock_t sta_lock; 797 unsigned long num_sta; 798 struct list_head sta_list, sta_pending_list; 799 struct sta_info *sta_hash[STA_HASH_SIZE]; 800 struct timer_list sta_cleanup; 801 struct work_struct sta_finish_work; 802 int sta_generation; 803 804 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 805 struct tasklet_struct tx_pending_tasklet; 806 807 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 808 809 /* number of interfaces with corresponding IFF_ flags */ 810 atomic_t iff_allmultis, iff_promiscs; 811 812 struct rate_control_ref *rate_ctrl; 813 814 struct crypto_blkcipher *wep_tx_tfm; 815 struct crypto_blkcipher *wep_rx_tfm; 816 u32 wep_iv; 817 818 /* see iface.c */ 819 struct list_head interfaces; 820 struct mutex iflist_mtx; 821 822 /* 823 * Key mutex, protects sdata's key_list and sta_info's 824 * key pointers (write access, they're RCU.) 825 */ 826 struct mutex key_mtx; 827 828 /* mutex for scan and work locking */ 829 struct mutex mtx; 830 831 /* Scanning and BSS list */ 832 unsigned long scanning; 833 struct cfg80211_ssid scan_ssid; 834 struct cfg80211_scan_request *int_scan_req; 835 struct cfg80211_scan_request *scan_req, *hw_scan_req; 836 struct ieee80211_channel *scan_channel; 837 enum ieee80211_band hw_scan_band; 838 int scan_channel_idx; 839 int scan_ies_len; 840 841 unsigned long leave_oper_channel_time; 842 enum mac80211_scan_state next_scan_state; 843 struct delayed_work scan_work; 844 struct ieee80211_sub_if_data *scan_sdata; 845 enum nl80211_channel_type _oper_channel_type; 846 struct ieee80211_channel *oper_channel, *csa_channel; 847 848 /* Temporary remain-on-channel for off-channel operations */ 849 struct ieee80211_channel *tmp_channel; 850 enum nl80211_channel_type tmp_channel_type; 851 852 /* SNMP counters */ 853 /* dot11CountersTable */ 854 u32 dot11TransmittedFragmentCount; 855 u32 dot11MulticastTransmittedFrameCount; 856 u32 dot11FailedCount; 857 u32 dot11RetryCount; 858 u32 dot11MultipleRetryCount; 859 u32 dot11FrameDuplicateCount; 860 u32 dot11ReceivedFragmentCount; 861 u32 dot11MulticastReceivedFrameCount; 862 u32 dot11TransmittedFrameCount; 863 864 #ifdef CONFIG_MAC80211_LEDS 865 int tx_led_counter, rx_led_counter; 866 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 867 struct tpt_led_trigger *tpt_led_trigger; 868 char tx_led_name[32], rx_led_name[32], 869 assoc_led_name[32], radio_led_name[32]; 870 #endif 871 872 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 873 /* TX/RX handler statistics */ 874 unsigned int tx_handlers_drop; 875 unsigned int tx_handlers_queued; 876 unsigned int tx_handlers_drop_unencrypted; 877 unsigned int tx_handlers_drop_fragment; 878 unsigned int tx_handlers_drop_wep; 879 unsigned int tx_handlers_drop_not_assoc; 880 unsigned int tx_handlers_drop_unauth_port; 881 unsigned int rx_handlers_drop; 882 unsigned int rx_handlers_queued; 883 unsigned int rx_handlers_drop_nullfunc; 884 unsigned int rx_handlers_drop_defrag; 885 unsigned int rx_handlers_drop_short; 886 unsigned int rx_handlers_drop_passive_scan; 887 unsigned int tx_expand_skb_head; 888 unsigned int tx_expand_skb_head_cloned; 889 unsigned int rx_expand_skb_head; 890 unsigned int rx_expand_skb_head2; 891 unsigned int rx_handlers_fragments; 892 unsigned int tx_status_drop; 893 #define I802_DEBUG_INC(c) (c)++ 894 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 895 #define I802_DEBUG_INC(c) do { } while (0) 896 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 897 898 899 int total_ps_buffered; /* total number of all buffered unicast and 900 * multicast packets for power saving stations 901 */ 902 int wifi_wme_noack_test; 903 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 904 905 /* 906 * Bitmask of enabled u-apsd queues, 907 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 908 * to take effect. 909 */ 910 unsigned int uapsd_queues; 911 912 /* 913 * Maximum number of buffered frames AP can deliver during a 914 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 915 * Needs a new association to take effect. 916 */ 917 unsigned int uapsd_max_sp_len; 918 919 bool pspolling; 920 bool offchannel_ps_enabled; 921 /* 922 * PS can only be enabled when we have exactly one managed 923 * interface (and monitors) in PS, this then points there. 924 */ 925 struct ieee80211_sub_if_data *ps_sdata; 926 struct work_struct dynamic_ps_enable_work; 927 struct work_struct dynamic_ps_disable_work; 928 struct timer_list dynamic_ps_timer; 929 struct notifier_block network_latency_notifier; 930 struct notifier_block ifa_notifier; 931 932 /* 933 * The dynamic ps timeout configured from user space via WEXT - 934 * this will override whatever chosen by mac80211 internally. 935 */ 936 int dynamic_ps_forced_timeout; 937 int dynamic_ps_user_timeout; 938 bool disable_dynamic_ps; 939 940 int user_power_level; /* in dBm */ 941 int power_constr_level; /* in dBm */ 942 943 enum ieee80211_smps_mode smps_mode; 944 945 struct work_struct restart_work; 946 947 #ifdef CONFIG_MAC80211_DEBUGFS 948 struct local_debugfsdentries { 949 struct dentry *rcdir; 950 struct dentry *keys; 951 } debugfs; 952 #endif 953 954 struct ieee80211_channel *hw_roc_channel; 955 struct net_device *hw_roc_dev; 956 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 957 struct work_struct hw_roc_start, hw_roc_done; 958 enum nl80211_channel_type hw_roc_channel_type; 959 unsigned int hw_roc_duration; 960 u32 hw_roc_cookie; 961 bool hw_roc_for_tx; 962 963 /* dummy netdev for use w/ NAPI */ 964 struct net_device napi_dev; 965 966 struct napi_struct napi; 967 }; 968 969 static inline struct ieee80211_sub_if_data * 970 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 971 { 972 return netdev_priv(dev); 973 } 974 975 /* this struct represents 802.11n's RA/TID combination */ 976 struct ieee80211_ra_tid { 977 u8 ra[ETH_ALEN]; 978 u16 tid; 979 }; 980 981 /* Parsed Information Elements */ 982 struct ieee802_11_elems { 983 u8 *ie_start; 984 size_t total_len; 985 986 /* pointers to IEs */ 987 u8 *ssid; 988 u8 *supp_rates; 989 u8 *fh_params; 990 u8 *ds_params; 991 u8 *cf_params; 992 struct ieee80211_tim_ie *tim; 993 u8 *ibss_params; 994 u8 *challenge; 995 u8 *wpa; 996 u8 *rsn; 997 u8 *erp_info; 998 u8 *ext_supp_rates; 999 u8 *wmm_info; 1000 u8 *wmm_param; 1001 struct ieee80211_ht_cap *ht_cap_elem; 1002 struct ieee80211_ht_info *ht_info_elem; 1003 struct ieee80211_meshconf_ie *mesh_config; 1004 u8 *mesh_id; 1005 u8 *peer_link; 1006 u8 *preq; 1007 u8 *prep; 1008 u8 *perr; 1009 struct ieee80211_rann_ie *rann; 1010 u8 *ch_switch_elem; 1011 u8 *country_elem; 1012 u8 *pwr_constr_elem; 1013 u8 *quiet_elem; /* first quite element */ 1014 u8 *timeout_int; 1015 1016 /* length of them, respectively */ 1017 u8 ssid_len; 1018 u8 supp_rates_len; 1019 u8 fh_params_len; 1020 u8 ds_params_len; 1021 u8 cf_params_len; 1022 u8 tim_len; 1023 u8 ibss_params_len; 1024 u8 challenge_len; 1025 u8 wpa_len; 1026 u8 rsn_len; 1027 u8 erp_info_len; 1028 u8 ext_supp_rates_len; 1029 u8 wmm_info_len; 1030 u8 wmm_param_len; 1031 u8 mesh_id_len; 1032 u8 peer_link_len; 1033 u8 preq_len; 1034 u8 prep_len; 1035 u8 perr_len; 1036 u8 ch_switch_elem_len; 1037 u8 country_elem_len; 1038 u8 pwr_constr_elem_len; 1039 u8 quiet_elem_len; 1040 u8 num_of_quiet_elem; /* can be more the one */ 1041 u8 timeout_int_len; 1042 }; 1043 1044 static inline struct ieee80211_local *hw_to_local( 1045 struct ieee80211_hw *hw) 1046 { 1047 return container_of(hw, struct ieee80211_local, hw); 1048 } 1049 1050 static inline struct ieee80211_hw *local_to_hw( 1051 struct ieee80211_local *local) 1052 { 1053 return &local->hw; 1054 } 1055 1056 1057 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1058 { 1059 return compare_ether_addr(raddr, addr) == 0 || 1060 is_broadcast_ether_addr(raddr); 1061 } 1062 1063 1064 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1065 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1066 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1067 u32 changed); 1068 void ieee80211_configure_filter(struct ieee80211_local *local); 1069 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1070 1071 extern bool ieee80211_disable_40mhz_24ghz; 1072 1073 /* STA code */ 1074 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1075 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1076 struct cfg80211_auth_request *req); 1077 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1078 struct cfg80211_assoc_request *req); 1079 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1080 struct cfg80211_deauth_request *req, 1081 void *cookie); 1082 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1083 struct cfg80211_disassoc_request *req, 1084 void *cookie); 1085 void ieee80211_send_pspoll(struct ieee80211_local *local, 1086 struct ieee80211_sub_if_data *sdata); 1087 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1088 int ieee80211_max_network_latency(struct notifier_block *nb, 1089 unsigned long data, void *dummy); 1090 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1091 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1092 struct ieee80211_channel_sw_ie *sw_elem, 1093 struct ieee80211_bss *bss, 1094 u64 timestamp); 1095 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1096 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1097 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1098 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1099 struct sk_buff *skb); 1100 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1101 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1102 1103 /* IBSS code */ 1104 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1105 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1106 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1107 u8 *bssid, u8 *addr, u32 supp_rates, 1108 gfp_t gfp); 1109 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1110 struct cfg80211_ibss_params *params); 1111 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1112 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1113 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1114 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1115 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1116 struct sk_buff *skb); 1117 1118 /* mesh code */ 1119 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1120 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1121 struct sk_buff *skb); 1122 1123 /* scan/BSS handling */ 1124 void ieee80211_scan_work(struct work_struct *work); 1125 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1126 const u8 *ssid, u8 ssid_len, 1127 struct ieee80211_channel *chan); 1128 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1129 struct cfg80211_scan_request *req); 1130 void ieee80211_scan_cancel(struct ieee80211_local *local); 1131 ieee80211_rx_result 1132 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1133 1134 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1135 struct ieee80211_bss * 1136 ieee80211_bss_info_update(struct ieee80211_local *local, 1137 struct ieee80211_rx_status *rx_status, 1138 struct ieee80211_mgmt *mgmt, 1139 size_t len, 1140 struct ieee802_11_elems *elems, 1141 struct ieee80211_channel *channel, 1142 bool beacon); 1143 struct ieee80211_bss * 1144 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1145 u8 *ssid, u8 ssid_len); 1146 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1147 struct ieee80211_bss *bss); 1148 1149 /* off-channel helpers */ 1150 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local); 1151 void ieee80211_offchannel_stop_station(struct ieee80211_local *local); 1152 void ieee80211_offchannel_return(struct ieee80211_local *local, 1153 bool enable_beaconing); 1154 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1155 1156 /* interface handling */ 1157 int ieee80211_iface_init(void); 1158 void ieee80211_iface_exit(void); 1159 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1160 struct net_device **new_dev, enum nl80211_iftype type, 1161 struct vif_params *params); 1162 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1163 enum nl80211_iftype type); 1164 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1165 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1166 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1167 void ieee80211_recalc_idle(struct ieee80211_local *local); 1168 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1169 const int offset); 1170 1171 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1172 { 1173 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1174 } 1175 1176 /* tx handling */ 1177 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1178 void ieee80211_tx_pending(unsigned long data); 1179 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1180 struct net_device *dev); 1181 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1182 struct net_device *dev); 1183 1184 /* 1185 * radiotap header for status frames 1186 */ 1187 struct ieee80211_tx_status_rtap_hdr { 1188 struct ieee80211_radiotap_header hdr; 1189 u8 rate; 1190 u8 padding_for_rate; 1191 __le16 tx_flags; 1192 u8 data_retries; 1193 } __packed; 1194 1195 1196 /* HT */ 1197 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1198 struct ieee80211_ht_cap *ht_cap_ie, 1199 struct ieee80211_sta_ht_cap *ht_cap); 1200 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1201 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1202 const u8 *da, u16 tid, 1203 u16 initiator, u16 reason_code); 1204 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1205 enum ieee80211_smps_mode smps, const u8 *da, 1206 const u8 *bssid); 1207 void ieee80211_request_smps_work(struct work_struct *work); 1208 1209 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1210 u16 initiator, u16 reason, bool stop); 1211 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1212 u16 initiator, u16 reason, bool stop); 1213 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1214 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1215 struct sta_info *sta, 1216 struct ieee80211_mgmt *mgmt, size_t len); 1217 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1218 struct sta_info *sta, 1219 struct ieee80211_mgmt *mgmt, 1220 size_t len); 1221 void ieee80211_process_addba_request(struct ieee80211_local *local, 1222 struct sta_info *sta, 1223 struct ieee80211_mgmt *mgmt, 1224 size_t len); 1225 1226 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1227 enum ieee80211_back_parties initiator, 1228 bool tx); 1229 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1230 enum ieee80211_back_parties initiator, 1231 bool tx); 1232 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1233 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1234 void ieee80211_ba_session_work(struct work_struct *work); 1235 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1236 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1237 1238 /* Spectrum management */ 1239 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1240 struct ieee80211_mgmt *mgmt, 1241 size_t len); 1242 1243 /* Suspend/resume and hw reconfiguration */ 1244 int ieee80211_reconfig(struct ieee80211_local *local); 1245 void ieee80211_stop_device(struct ieee80211_local *local); 1246 1247 #ifdef CONFIG_PM 1248 int __ieee80211_suspend(struct ieee80211_hw *hw); 1249 1250 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1251 { 1252 struct ieee80211_local *local = hw_to_local(hw); 1253 1254 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1255 "%s: resume with hardware scan still in progress\n", 1256 wiphy_name(hw->wiphy)); 1257 1258 return ieee80211_reconfig(hw_to_local(hw)); 1259 } 1260 #else 1261 static inline int __ieee80211_suspend(struct ieee80211_hw *hw) 1262 { 1263 return 0; 1264 } 1265 1266 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1267 { 1268 return 0; 1269 } 1270 #endif 1271 1272 /* utility functions/constants */ 1273 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1274 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1275 enum nl80211_iftype type); 1276 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1277 int rate, int erp, int short_preamble); 1278 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1279 struct ieee80211_hdr *hdr, const u8 *tsc, 1280 gfp_t gfp); 1281 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1282 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1283 void ieee802_11_parse_elems(u8 *start, size_t len, 1284 struct ieee802_11_elems *elems); 1285 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1286 struct ieee802_11_elems *elems, 1287 u64 filter, u32 crc); 1288 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1289 enum ieee80211_band band); 1290 1291 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1292 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1293 void ieee80211_dynamic_ps_timer(unsigned long data); 1294 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1295 struct ieee80211_sub_if_data *sdata, 1296 int powersave); 1297 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1298 struct ieee80211_hdr *hdr); 1299 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1300 struct ieee80211_hdr *hdr, bool ack); 1301 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1302 1303 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1304 enum queue_stop_reason reason); 1305 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1306 enum queue_stop_reason reason); 1307 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1308 enum queue_stop_reason reason); 1309 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1310 enum queue_stop_reason reason); 1311 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1312 struct sk_buff *skb); 1313 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1314 struct sk_buff_head *skbs); 1315 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1316 struct sk_buff_head *skbs, 1317 void (*fn)(void *data), void *data); 1318 1319 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1320 u16 transaction, u16 auth_alg, 1321 u8 *extra, size_t extra_len, const u8 *bssid, 1322 const u8 *key, u8 key_len, u8 key_idx); 1323 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1324 const u8 *ie, size_t ie_len, 1325 enum ieee80211_band band, u32 rate_mask, 1326 u8 channel); 1327 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1328 u8 *dst, 1329 const u8 *ssid, size_t ssid_len, 1330 const u8 *ie, size_t ie_len); 1331 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1332 const u8 *ssid, size_t ssid_len, 1333 const u8 *ie, size_t ie_len); 1334 1335 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1336 const size_t supp_rates_len, 1337 const u8 *supp_rates); 1338 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1339 struct ieee802_11_elems *elems, 1340 enum ieee80211_band band); 1341 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1342 enum ieee80211_smps_mode smps_mode); 1343 void ieee80211_recalc_smps(struct ieee80211_local *local); 1344 1345 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1346 const u8 *ids, int n_ids, size_t offset); 1347 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1348 1349 /* internal work items */ 1350 void ieee80211_work_init(struct ieee80211_local *local); 1351 void ieee80211_add_work(struct ieee80211_work *wk); 1352 void free_work(struct ieee80211_work *wk); 1353 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1354 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1355 struct sk_buff *skb); 1356 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1357 struct ieee80211_channel *chan, 1358 enum nl80211_channel_type channel_type, 1359 unsigned int duration, u64 *cookie); 1360 int ieee80211_wk_cancel_remain_on_channel( 1361 struct ieee80211_sub_if_data *sdata, u64 cookie); 1362 1363 /* channel management */ 1364 enum ieee80211_chan_mode { 1365 CHAN_MODE_UNDEFINED, 1366 CHAN_MODE_HOPPING, 1367 CHAN_MODE_FIXED, 1368 }; 1369 1370 enum ieee80211_chan_mode 1371 ieee80211_get_channel_mode(struct ieee80211_local *local, 1372 struct ieee80211_sub_if_data *ignore); 1373 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1374 struct ieee80211_sub_if_data *sdata, 1375 enum nl80211_channel_type chantype); 1376 1377 #ifdef CONFIG_MAC80211_NOINLINE 1378 #define debug_noinline noinline 1379 #else 1380 #define debug_noinline 1381 #endif 1382 1383 #endif /* IEEE80211_I_H */ 1384