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 bool dtim_bc_mc; 229 }; 230 231 struct ieee80211_if_wds { 232 struct sta_info *sta; 233 u8 remote_addr[ETH_ALEN]; 234 }; 235 236 struct ieee80211_if_vlan { 237 struct list_head list; 238 239 /* used for all tx if the VLAN is configured to 4-addr mode */ 240 struct sta_info *sta; 241 }; 242 243 struct mesh_stats { 244 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 245 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 246 __u32 fwded_frames; /* Mesh total forwarded frames */ 247 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 248 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 249 atomic_t estab_plinks; 250 }; 251 252 #define PREQ_Q_F_START 0x1 253 #define PREQ_Q_F_REFRESH 0x2 254 struct mesh_preq_queue { 255 struct list_head list; 256 u8 dst[ETH_ALEN]; 257 u8 flags; 258 }; 259 260 enum ieee80211_work_type { 261 IEEE80211_WORK_ABORT, 262 IEEE80211_WORK_DIRECT_PROBE, 263 IEEE80211_WORK_AUTH, 264 IEEE80211_WORK_ASSOC_BEACON_WAIT, 265 IEEE80211_WORK_ASSOC, 266 IEEE80211_WORK_REMAIN_ON_CHANNEL, 267 IEEE80211_WORK_OFFCHANNEL_TX, 268 }; 269 270 /** 271 * enum work_done_result - indicates what to do after work was done 272 * 273 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 274 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 275 * should be requeued. 276 */ 277 enum work_done_result { 278 WORK_DONE_DESTROY, 279 WORK_DONE_REQUEUE, 280 }; 281 282 struct ieee80211_work { 283 struct list_head list; 284 285 struct rcu_head rcu_head; 286 287 struct ieee80211_sub_if_data *sdata; 288 289 enum work_done_result (*done)(struct ieee80211_work *wk, 290 struct sk_buff *skb); 291 292 struct ieee80211_channel *chan; 293 enum nl80211_channel_type chan_type; 294 295 unsigned long timeout; 296 enum ieee80211_work_type type; 297 298 u8 filter_ta[ETH_ALEN]; 299 300 bool started; 301 302 union { 303 struct { 304 int tries; 305 u16 algorithm, transaction; 306 u8 ssid[IEEE80211_MAX_SSID_LEN]; 307 u8 ssid_len; 308 u8 key[WLAN_KEY_LEN_WEP104]; 309 u8 key_len, key_idx; 310 bool privacy; 311 } probe_auth; 312 struct { 313 struct cfg80211_bss *bss; 314 const u8 *supp_rates; 315 const u8 *ht_information_ie; 316 enum ieee80211_smps_mode smps; 317 int tries; 318 u16 capability; 319 u8 prev_bssid[ETH_ALEN]; 320 u8 ssid[IEEE80211_MAX_SSID_LEN]; 321 u8 ssid_len; 322 u8 supp_rates_len; 323 bool wmm_used, use_11n, uapsd_used; 324 } assoc; 325 struct { 326 u32 duration; 327 } remain; 328 struct { 329 struct sk_buff *frame; 330 u32 wait; 331 } offchan_tx; 332 }; 333 334 int ie_len; 335 /* must be last */ 336 u8 ie[0]; 337 }; 338 339 /* flags used in struct ieee80211_if_managed.flags */ 340 enum ieee80211_sta_flags { 341 IEEE80211_STA_BEACON_POLL = BIT(0), 342 IEEE80211_STA_CONNECTION_POLL = BIT(1), 343 IEEE80211_STA_CONTROL_PORT = BIT(2), 344 IEEE80211_STA_DISABLE_11N = BIT(4), 345 IEEE80211_STA_CSA_RECEIVED = BIT(5), 346 IEEE80211_STA_MFP_ENABLED = BIT(6), 347 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 348 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 349 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 350 }; 351 352 struct ieee80211_if_managed { 353 struct timer_list timer; 354 struct timer_list conn_mon_timer; 355 struct timer_list bcn_mon_timer; 356 struct timer_list chswitch_timer; 357 struct work_struct monitor_work; 358 struct work_struct chswitch_work; 359 struct work_struct beacon_connection_loss_work; 360 361 unsigned long beacon_timeout; 362 unsigned long probe_timeout; 363 int probe_send_count; 364 bool nullfunc_failed; 365 366 struct mutex mtx; 367 struct cfg80211_bss *associated; 368 369 u8 bssid[ETH_ALEN]; 370 371 u16 aid; 372 373 unsigned long timers_running; /* used for quiesce/restart */ 374 bool powersave; /* powersave requested for this iface */ 375 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 376 ap_smps, /* smps mode AP thinks we're in */ 377 driver_smps_mode; /* smps mode request */ 378 379 struct work_struct request_smps_work; 380 381 unsigned int flags; 382 383 bool beacon_crc_valid; 384 u32 beacon_crc; 385 386 enum { 387 IEEE80211_MFP_DISABLED, 388 IEEE80211_MFP_OPTIONAL, 389 IEEE80211_MFP_REQUIRED 390 } mfp; /* management frame protection */ 391 392 int wmm_last_param_set; 393 394 u8 use_4addr; 395 396 /* Signal strength from the last Beacon frame in the current BSS. */ 397 int last_beacon_signal; 398 399 /* 400 * Weighted average of the signal strength from Beacon frames in the 401 * current BSS. This is in units of 1/16 of the signal unit to maintain 402 * accuracy and to speed up calculations, i.e., the value need to be 403 * divided by 16 to get the actual value. 404 */ 405 int ave_beacon_signal; 406 407 /* 408 * Number of Beacon frames used in ave_beacon_signal. This can be used 409 * to avoid generating less reliable cqm events that would be based 410 * only on couple of received frames. 411 */ 412 unsigned int count_beacon_signal; 413 414 /* 415 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 416 * that triggered a cqm event. 0 indicates that no event has been 417 * generated for the current association. 418 */ 419 int last_cqm_event_signal; 420 }; 421 422 struct ieee80211_if_ibss { 423 struct timer_list timer; 424 425 struct mutex mtx; 426 427 unsigned long last_scan_completed; 428 429 u32 basic_rates; 430 431 bool timer_running; 432 433 bool fixed_bssid; 434 bool fixed_channel; 435 bool privacy; 436 437 u8 bssid[ETH_ALEN]; 438 u8 ssid[IEEE80211_MAX_SSID_LEN]; 439 u8 ssid_len, ie_len; 440 u8 *ie; 441 struct ieee80211_channel *channel; 442 443 unsigned long ibss_join_req; 444 /* probe response/beacon for IBSS */ 445 struct sk_buff *presp, *skb; 446 447 enum { 448 IEEE80211_IBSS_MLME_SEARCH, 449 IEEE80211_IBSS_MLME_JOINED, 450 } state; 451 }; 452 453 struct ieee80211_if_mesh { 454 struct timer_list housekeeping_timer; 455 struct timer_list mesh_path_timer; 456 struct timer_list mesh_path_root_timer; 457 458 unsigned long timers_running; 459 460 unsigned long wrkq_flags; 461 462 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 463 size_t mesh_id_len; 464 /* Active Path Selection Protocol Identifier */ 465 u8 mesh_pp_id; 466 /* Active Path Selection Metric Identifier */ 467 u8 mesh_pm_id; 468 /* Congestion Control Mode Identifier */ 469 u8 mesh_cc_id; 470 /* Synchronization Protocol Identifier */ 471 u8 mesh_sp_id; 472 /* Authentication Protocol Identifier */ 473 u8 mesh_auth_id; 474 /* Local mesh Sequence Number */ 475 u32 sn; 476 /* Last used PREQ ID */ 477 u32 preq_id; 478 atomic_t mpaths; 479 /* Timestamp of last SN update */ 480 unsigned long last_sn_update; 481 /* Timestamp of last SN sent */ 482 unsigned long last_preq; 483 struct mesh_rmc *rmc; 484 spinlock_t mesh_preq_queue_lock; 485 struct mesh_preq_queue preq_queue; 486 int preq_queue_len; 487 struct mesh_stats mshstats; 488 struct mesh_config mshcfg; 489 u32 mesh_seqnum; 490 bool accepting_plinks; 491 const u8 *vendor_ie; 492 u8 vendor_ie_len; 493 }; 494 495 #ifdef CONFIG_MAC80211_MESH 496 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 497 do { (msh)->mshstats.name++; } while (0) 498 #else 499 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 500 do { } while (0) 501 #endif 502 503 /** 504 * enum ieee80211_sub_if_data_flags - virtual interface flags 505 * 506 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 507 * @IEEE80211_SDATA_PROMISC: interface is promisc 508 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 509 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 510 * associated stations and deliver multicast frames both 511 * back to wireless media and to the local net stack. 512 */ 513 enum ieee80211_sub_if_data_flags { 514 IEEE80211_SDATA_ALLMULTI = BIT(0), 515 IEEE80211_SDATA_PROMISC = BIT(1), 516 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 517 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 518 }; 519 520 /** 521 * enum ieee80211_sdata_state_bits - virtual interface state bits 522 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 523 * mirrors netif_running() but is separate for interface type 524 * change handling while the interface is up 525 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 526 * mode, so queues are stopped 527 */ 528 enum ieee80211_sdata_state_bits { 529 SDATA_STATE_RUNNING, 530 SDATA_STATE_OFFCHANNEL, 531 }; 532 533 struct ieee80211_sub_if_data { 534 struct list_head list; 535 536 struct wireless_dev wdev; 537 538 /* keys */ 539 struct list_head key_list; 540 541 struct net_device *dev; 542 struct ieee80211_local *local; 543 544 unsigned int flags; 545 546 unsigned long state; 547 548 int drop_unencrypted; 549 550 char name[IFNAMSIZ]; 551 552 /* 553 * keep track of whether the HT opmode (stored in 554 * vif.bss_info.ht_operation_mode) is valid. 555 */ 556 bool ht_opmode_valid; 557 558 /* to detect idle changes */ 559 bool old_idle; 560 561 /* Fragment table for host-based reassembly */ 562 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 563 unsigned int fragment_next; 564 565 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 566 struct ieee80211_key *default_unicast_key, *default_multicast_key; 567 struct ieee80211_key *default_mgmt_key; 568 569 u16 sequence_number; 570 __be16 control_port_protocol; 571 bool control_port_no_encrypt; 572 573 struct work_struct work; 574 struct sk_buff_head skb_queue; 575 576 bool arp_filter_state; 577 578 /* 579 * AP this belongs to: self in AP mode and 580 * corresponding AP in VLAN mode, NULL for 581 * all others (might be needed later in IBSS) 582 */ 583 struct ieee80211_if_ap *bss; 584 585 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 586 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 587 588 union { 589 struct ieee80211_if_ap ap; 590 struct ieee80211_if_wds wds; 591 struct ieee80211_if_vlan vlan; 592 struct ieee80211_if_managed mgd; 593 struct ieee80211_if_ibss ibss; 594 struct ieee80211_if_mesh mesh; 595 u32 mntr_flags; 596 } u; 597 598 #ifdef CONFIG_MAC80211_DEBUGFS 599 struct { 600 struct dentry *dir; 601 struct dentry *subdir_stations; 602 struct dentry *default_unicast_key; 603 struct dentry *default_multicast_key; 604 struct dentry *default_mgmt_key; 605 } debugfs; 606 #endif 607 /* must be last, dynamically sized area in this! */ 608 struct ieee80211_vif vif; 609 }; 610 611 static inline 612 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 613 { 614 return container_of(p, struct ieee80211_sub_if_data, vif); 615 } 616 617 enum sdata_queue_type { 618 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 619 IEEE80211_SDATA_QUEUE_AGG_START = 1, 620 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 621 }; 622 623 enum { 624 IEEE80211_RX_MSG = 1, 625 IEEE80211_TX_STATUS_MSG = 2, 626 }; 627 628 enum queue_stop_reason { 629 IEEE80211_QUEUE_STOP_REASON_DRIVER, 630 IEEE80211_QUEUE_STOP_REASON_PS, 631 IEEE80211_QUEUE_STOP_REASON_CSA, 632 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 633 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 634 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 635 }; 636 637 #ifdef CONFIG_MAC80211_LEDS 638 struct tpt_led_trigger { 639 struct led_trigger trig; 640 char name[32]; 641 const struct ieee80211_tpt_blink *blink_table; 642 unsigned int blink_table_len; 643 struct timer_list timer; 644 unsigned long prev_traffic; 645 unsigned long tx_bytes, rx_bytes; 646 unsigned int active, want; 647 bool running; 648 }; 649 #endif 650 651 /** 652 * mac80211 scan flags - currently active scan mode 653 * 654 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 655 * well be on the operating channel 656 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 657 * determine if we are on the operating channel or not 658 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 659 * that the scan completed. 660 * @SCAN_ABORTED: Set for our scan work function when the driver reported 661 * a scan complete for an aborted scan. 662 */ 663 enum { 664 SCAN_SW_SCANNING, 665 SCAN_HW_SCANNING, 666 SCAN_COMPLETED, 667 SCAN_ABORTED, 668 }; 669 670 /** 671 * enum mac80211_scan_state - scan state machine states 672 * 673 * @SCAN_DECISION: Main entry point to the scan state machine, this state 674 * determines if we should keep on scanning or switch back to the 675 * operating channel 676 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 677 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 678 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 679 * about us leaving the channel and stop all associated STA interfaces 680 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 681 * AP about us being back and restart all associated STA interfaces 682 */ 683 enum mac80211_scan_state { 684 SCAN_DECISION, 685 SCAN_SET_CHANNEL, 686 SCAN_SEND_PROBE, 687 SCAN_LEAVE_OPER_CHANNEL, 688 SCAN_ENTER_OPER_CHANNEL, 689 }; 690 691 struct ieee80211_local { 692 /* embed the driver visible part. 693 * don't cast (use the static inlines below), but we keep 694 * it first anyway so they become a no-op */ 695 struct ieee80211_hw hw; 696 697 const struct ieee80211_ops *ops; 698 699 /* 700 * work stuff, potentially off-channel (in the future) 701 */ 702 struct list_head work_list; 703 struct timer_list work_timer; 704 struct work_struct work_work; 705 struct sk_buff_head work_skb_queue; 706 707 /* 708 * private workqueue to mac80211. mac80211 makes this accessible 709 * via ieee80211_queue_work() 710 */ 711 struct workqueue_struct *workqueue; 712 713 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 714 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 715 spinlock_t queue_stop_reason_lock; 716 717 int open_count; 718 int monitors, cooked_mntrs; 719 /* number of interfaces with corresponding FIF_ flags */ 720 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 721 fif_probe_req; 722 int probe_req_reg; 723 unsigned int filter_flags; /* FIF_* */ 724 725 bool wiphy_ciphers_allocated; 726 727 /* protects the aggregated multicast list and filter calls */ 728 spinlock_t filter_lock; 729 730 /* used for uploading changed mc list */ 731 struct work_struct reconfig_filter; 732 733 /* used to reconfigure hardware SM PS */ 734 struct work_struct recalc_smps; 735 736 /* aggregated multicast list */ 737 struct netdev_hw_addr_list mc_list; 738 739 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 740 741 /* 742 * suspended is true if we finished all the suspend _and_ we have 743 * not yet come up from resume. This is to be used by mac80211 744 * to ensure driver sanity during suspend and mac80211's own 745 * sanity. It can eventually be used for WoW as well. 746 */ 747 bool suspended; 748 749 /* 750 * Resuming is true while suspended, but when we're reprogramming the 751 * hardware -- at that time it's allowed to use ieee80211_queue_work() 752 * again even though some other parts of the stack are still suspended 753 * and we still drop received frames to avoid waking the stack. 754 */ 755 bool resuming; 756 757 /* 758 * quiescing is true during the suspend process _only_ to 759 * ease timer cancelling etc. 760 */ 761 bool quiescing; 762 763 /* device is started */ 764 bool started; 765 766 int tx_headroom; /* required headroom for hardware/radiotap */ 767 768 /* Tasklet and skb queue to process calls from IRQ mode. All frames 769 * added to skb_queue will be processed, but frames in 770 * skb_queue_unreliable may be dropped if the total length of these 771 * queues increases over the limit. */ 772 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 773 struct tasklet_struct tasklet; 774 struct sk_buff_head skb_queue; 775 struct sk_buff_head skb_queue_unreliable; 776 777 /* 778 * Internal FIFO queue which is shared between multiple rx path 779 * stages. Its main task is to provide a serialization mechanism, 780 * so all rx handlers can enjoy having exclusive access to their 781 * private data structures. 782 */ 783 struct sk_buff_head rx_skb_queue; 784 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 785 786 /* Station data */ 787 /* 788 * The mutex only protects the list and counter, 789 * reads are done in RCU. 790 * Additionally, the lock protects the hash table, 791 * the pending list and each BSS's TIM bitmap. 792 */ 793 struct mutex sta_mtx; 794 spinlock_t sta_lock; 795 unsigned long num_sta; 796 struct list_head sta_list, sta_pending_list; 797 struct sta_info *sta_hash[STA_HASH_SIZE]; 798 struct timer_list sta_cleanup; 799 struct work_struct sta_finish_work; 800 int sta_generation; 801 802 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 803 struct tasklet_struct tx_pending_tasklet; 804 805 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 806 807 /* number of interfaces with corresponding IFF_ flags */ 808 atomic_t iff_allmultis, iff_promiscs; 809 810 struct rate_control_ref *rate_ctrl; 811 812 struct crypto_blkcipher *wep_tx_tfm; 813 struct crypto_blkcipher *wep_rx_tfm; 814 u32 wep_iv; 815 816 /* see iface.c */ 817 struct list_head interfaces; 818 struct mutex iflist_mtx; 819 820 /* 821 * Key mutex, protects sdata's key_list and sta_info's 822 * key pointers (write access, they're RCU.) 823 */ 824 struct mutex key_mtx; 825 826 /* mutex for scan and work locking */ 827 struct mutex mtx; 828 829 /* Scanning and BSS list */ 830 unsigned long scanning; 831 struct cfg80211_ssid scan_ssid; 832 struct cfg80211_scan_request *int_scan_req; 833 struct cfg80211_scan_request *scan_req, *hw_scan_req; 834 struct ieee80211_channel *scan_channel; 835 enum ieee80211_band hw_scan_band; 836 int scan_channel_idx; 837 int scan_ies_len; 838 839 unsigned long leave_oper_channel_time; 840 enum mac80211_scan_state next_scan_state; 841 struct delayed_work scan_work; 842 struct ieee80211_sub_if_data *scan_sdata; 843 enum nl80211_channel_type _oper_channel_type; 844 struct ieee80211_channel *oper_channel, *csa_channel; 845 846 /* Temporary remain-on-channel for off-channel operations */ 847 struct ieee80211_channel *tmp_channel; 848 enum nl80211_channel_type tmp_channel_type; 849 850 /* SNMP counters */ 851 /* dot11CountersTable */ 852 u32 dot11TransmittedFragmentCount; 853 u32 dot11MulticastTransmittedFrameCount; 854 u32 dot11FailedCount; 855 u32 dot11RetryCount; 856 u32 dot11MultipleRetryCount; 857 u32 dot11FrameDuplicateCount; 858 u32 dot11ReceivedFragmentCount; 859 u32 dot11MulticastReceivedFrameCount; 860 u32 dot11TransmittedFrameCount; 861 862 #ifdef CONFIG_MAC80211_LEDS 863 int tx_led_counter, rx_led_counter; 864 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 865 struct tpt_led_trigger *tpt_led_trigger; 866 char tx_led_name[32], rx_led_name[32], 867 assoc_led_name[32], radio_led_name[32]; 868 #endif 869 870 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 871 /* TX/RX handler statistics */ 872 unsigned int tx_handlers_drop; 873 unsigned int tx_handlers_queued; 874 unsigned int tx_handlers_drop_unencrypted; 875 unsigned int tx_handlers_drop_fragment; 876 unsigned int tx_handlers_drop_wep; 877 unsigned int tx_handlers_drop_not_assoc; 878 unsigned int tx_handlers_drop_unauth_port; 879 unsigned int rx_handlers_drop; 880 unsigned int rx_handlers_queued; 881 unsigned int rx_handlers_drop_nullfunc; 882 unsigned int rx_handlers_drop_defrag; 883 unsigned int rx_handlers_drop_short; 884 unsigned int rx_handlers_drop_passive_scan; 885 unsigned int tx_expand_skb_head; 886 unsigned int tx_expand_skb_head_cloned; 887 unsigned int rx_expand_skb_head; 888 unsigned int rx_expand_skb_head2; 889 unsigned int rx_handlers_fragments; 890 unsigned int tx_status_drop; 891 #define I802_DEBUG_INC(c) (c)++ 892 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 893 #define I802_DEBUG_INC(c) do { } while (0) 894 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 895 896 897 int total_ps_buffered; /* total number of all buffered unicast and 898 * multicast packets for power saving stations 899 */ 900 int wifi_wme_noack_test; 901 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 902 903 /* 904 * Bitmask of enabled u-apsd queues, 905 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 906 * to take effect. 907 */ 908 unsigned int uapsd_queues; 909 910 /* 911 * Maximum number of buffered frames AP can deliver during a 912 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 913 * Needs a new association to take effect. 914 */ 915 unsigned int uapsd_max_sp_len; 916 917 bool pspolling; 918 bool offchannel_ps_enabled; 919 /* 920 * PS can only be enabled when we have exactly one managed 921 * interface (and monitors) in PS, this then points there. 922 */ 923 struct ieee80211_sub_if_data *ps_sdata; 924 struct work_struct dynamic_ps_enable_work; 925 struct work_struct dynamic_ps_disable_work; 926 struct timer_list dynamic_ps_timer; 927 struct notifier_block network_latency_notifier; 928 struct notifier_block ifa_notifier; 929 930 /* 931 * The dynamic ps timeout configured from user space via WEXT - 932 * this will override whatever chosen by mac80211 internally. 933 */ 934 int dynamic_ps_forced_timeout; 935 int dynamic_ps_user_timeout; 936 bool disable_dynamic_ps; 937 938 int user_power_level; /* in dBm */ 939 int power_constr_level; /* in dBm */ 940 941 enum ieee80211_smps_mode smps_mode; 942 943 struct work_struct restart_work; 944 945 #ifdef CONFIG_MAC80211_DEBUGFS 946 struct local_debugfsdentries { 947 struct dentry *rcdir; 948 struct dentry *keys; 949 } debugfs; 950 #endif 951 952 struct ieee80211_channel *hw_roc_channel; 953 struct net_device *hw_roc_dev; 954 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 955 struct work_struct hw_roc_start, hw_roc_done; 956 enum nl80211_channel_type hw_roc_channel_type; 957 unsigned int hw_roc_duration; 958 u32 hw_roc_cookie; 959 bool hw_roc_for_tx; 960 unsigned long hw_offchan_tx_cookie; 961 962 /* dummy netdev for use w/ NAPI */ 963 struct net_device napi_dev; 964 965 struct napi_struct napi; 966 }; 967 968 static inline struct ieee80211_sub_if_data * 969 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 970 { 971 return netdev_priv(dev); 972 } 973 974 /* this struct represents 802.11n's RA/TID combination */ 975 struct ieee80211_ra_tid { 976 u8 ra[ETH_ALEN]; 977 u16 tid; 978 }; 979 980 /* Parsed Information Elements */ 981 struct ieee802_11_elems { 982 u8 *ie_start; 983 size_t total_len; 984 985 /* pointers to IEs */ 986 u8 *ssid; 987 u8 *supp_rates; 988 u8 *fh_params; 989 u8 *ds_params; 990 u8 *cf_params; 991 struct ieee80211_tim_ie *tim; 992 u8 *ibss_params; 993 u8 *challenge; 994 u8 *wpa; 995 u8 *rsn; 996 u8 *erp_info; 997 u8 *ext_supp_rates; 998 u8 *wmm_info; 999 u8 *wmm_param; 1000 struct ieee80211_ht_cap *ht_cap_elem; 1001 struct ieee80211_ht_info *ht_info_elem; 1002 struct ieee80211_meshconf_ie *mesh_config; 1003 u8 *mesh_id; 1004 u8 *peer_link; 1005 u8 *preq; 1006 u8 *prep; 1007 u8 *perr; 1008 struct ieee80211_rann_ie *rann; 1009 u8 *ch_switch_elem; 1010 u8 *country_elem; 1011 u8 *pwr_constr_elem; 1012 u8 *quiet_elem; /* first quite element */ 1013 u8 *timeout_int; 1014 1015 /* length of them, respectively */ 1016 u8 ssid_len; 1017 u8 supp_rates_len; 1018 u8 fh_params_len; 1019 u8 ds_params_len; 1020 u8 cf_params_len; 1021 u8 tim_len; 1022 u8 ibss_params_len; 1023 u8 challenge_len; 1024 u8 wpa_len; 1025 u8 rsn_len; 1026 u8 erp_info_len; 1027 u8 ext_supp_rates_len; 1028 u8 wmm_info_len; 1029 u8 wmm_param_len; 1030 u8 mesh_id_len; 1031 u8 peer_link_len; 1032 u8 preq_len; 1033 u8 prep_len; 1034 u8 perr_len; 1035 u8 ch_switch_elem_len; 1036 u8 country_elem_len; 1037 u8 pwr_constr_elem_len; 1038 u8 quiet_elem_len; 1039 u8 num_of_quiet_elem; /* can be more the one */ 1040 u8 timeout_int_len; 1041 }; 1042 1043 static inline struct ieee80211_local *hw_to_local( 1044 struct ieee80211_hw *hw) 1045 { 1046 return container_of(hw, struct ieee80211_local, hw); 1047 } 1048 1049 static inline struct ieee80211_hw *local_to_hw( 1050 struct ieee80211_local *local) 1051 { 1052 return &local->hw; 1053 } 1054 1055 1056 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1057 { 1058 return compare_ether_addr(raddr, addr) == 0 || 1059 is_broadcast_ether_addr(raddr); 1060 } 1061 1062 1063 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1064 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1065 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1066 u32 changed); 1067 void ieee80211_configure_filter(struct ieee80211_local *local); 1068 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1069 1070 /* STA code */ 1071 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1072 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1073 struct cfg80211_auth_request *req); 1074 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1075 struct cfg80211_assoc_request *req); 1076 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1077 struct cfg80211_deauth_request *req, 1078 void *cookie); 1079 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1080 struct cfg80211_disassoc_request *req, 1081 void *cookie); 1082 void ieee80211_send_pspoll(struct ieee80211_local *local, 1083 struct ieee80211_sub_if_data *sdata); 1084 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1085 int ieee80211_max_network_latency(struct notifier_block *nb, 1086 unsigned long data, void *dummy); 1087 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1088 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1089 struct ieee80211_channel_sw_ie *sw_elem, 1090 struct ieee80211_bss *bss, 1091 u64 timestamp); 1092 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1093 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1094 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1095 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1096 struct sk_buff *skb); 1097 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1098 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1099 1100 /* IBSS code */ 1101 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1102 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1103 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1104 u8 *bssid, u8 *addr, u32 supp_rates, 1105 gfp_t gfp); 1106 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1107 struct cfg80211_ibss_params *params); 1108 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1109 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1110 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1111 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1112 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1113 struct sk_buff *skb); 1114 1115 /* mesh code */ 1116 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1117 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1118 struct sk_buff *skb); 1119 1120 /* scan/BSS handling */ 1121 void ieee80211_scan_work(struct work_struct *work); 1122 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1123 const u8 *ssid, u8 ssid_len, 1124 struct ieee80211_channel *chan); 1125 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1126 struct cfg80211_scan_request *req); 1127 void ieee80211_scan_cancel(struct ieee80211_local *local); 1128 ieee80211_rx_result 1129 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1130 1131 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1132 struct ieee80211_bss * 1133 ieee80211_bss_info_update(struct ieee80211_local *local, 1134 struct ieee80211_rx_status *rx_status, 1135 struct ieee80211_mgmt *mgmt, 1136 size_t len, 1137 struct ieee802_11_elems *elems, 1138 struct ieee80211_channel *channel, 1139 bool beacon); 1140 struct ieee80211_bss * 1141 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1142 u8 *ssid, u8 ssid_len); 1143 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1144 struct ieee80211_bss *bss); 1145 1146 /* off-channel helpers */ 1147 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); 1148 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, 1149 bool tell_ap); 1150 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1151 bool offchannel_ps_enable); 1152 void ieee80211_offchannel_return(struct ieee80211_local *local, 1153 bool enable_beaconing, 1154 bool offchannel_ps_disable); 1155 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1156 1157 /* interface handling */ 1158 int ieee80211_iface_init(void); 1159 void ieee80211_iface_exit(void); 1160 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1161 struct net_device **new_dev, enum nl80211_iftype type, 1162 struct vif_params *params); 1163 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1164 enum nl80211_iftype type); 1165 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1166 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1167 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1168 void ieee80211_recalc_idle(struct ieee80211_local *local); 1169 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1170 const int offset); 1171 1172 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1173 { 1174 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1175 } 1176 1177 /* tx handling */ 1178 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1179 void ieee80211_tx_pending(unsigned long data); 1180 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1181 struct net_device *dev); 1182 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1183 struct net_device *dev); 1184 1185 /* 1186 * radiotap header for status frames 1187 */ 1188 struct ieee80211_tx_status_rtap_hdr { 1189 struct ieee80211_radiotap_header hdr; 1190 u8 rate; 1191 u8 padding_for_rate; 1192 __le16 tx_flags; 1193 u8 data_retries; 1194 } __packed; 1195 1196 1197 /* HT */ 1198 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1199 struct ieee80211_ht_cap *ht_cap_ie, 1200 struct ieee80211_sta_ht_cap *ht_cap); 1201 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1202 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1203 const u8 *da, u16 tid, 1204 u16 initiator, u16 reason_code); 1205 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1206 enum ieee80211_smps_mode smps, const u8 *da, 1207 const u8 *bssid); 1208 void ieee80211_request_smps_work(struct work_struct *work); 1209 1210 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1211 u16 initiator, u16 reason, bool stop); 1212 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1213 u16 initiator, u16 reason, bool stop); 1214 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1215 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1216 struct sta_info *sta, 1217 struct ieee80211_mgmt *mgmt, size_t len); 1218 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1219 struct sta_info *sta, 1220 struct ieee80211_mgmt *mgmt, 1221 size_t len); 1222 void ieee80211_process_addba_request(struct ieee80211_local *local, 1223 struct sta_info *sta, 1224 struct ieee80211_mgmt *mgmt, 1225 size_t len); 1226 1227 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1228 enum ieee80211_back_parties initiator, 1229 bool tx); 1230 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1231 enum ieee80211_back_parties initiator, 1232 bool tx); 1233 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1234 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1235 void ieee80211_ba_session_work(struct work_struct *work); 1236 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1237 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1238 1239 /* Spectrum management */ 1240 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1241 struct ieee80211_mgmt *mgmt, 1242 size_t len); 1243 1244 /* Suspend/resume and hw reconfiguration */ 1245 int ieee80211_reconfig(struct ieee80211_local *local); 1246 void ieee80211_stop_device(struct ieee80211_local *local); 1247 1248 #ifdef CONFIG_PM 1249 int __ieee80211_suspend(struct ieee80211_hw *hw); 1250 1251 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1252 { 1253 struct ieee80211_local *local = hw_to_local(hw); 1254 1255 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1256 "%s: resume with hardware scan still in progress\n", 1257 wiphy_name(hw->wiphy)); 1258 1259 return ieee80211_reconfig(hw_to_local(hw)); 1260 } 1261 #else 1262 static inline int __ieee80211_suspend(struct ieee80211_hw *hw) 1263 { 1264 return 0; 1265 } 1266 1267 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1268 { 1269 return 0; 1270 } 1271 #endif 1272 1273 /* utility functions/constants */ 1274 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1275 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1276 enum nl80211_iftype type); 1277 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1278 int rate, int erp, int short_preamble); 1279 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1280 struct ieee80211_hdr *hdr, const u8 *tsc, 1281 gfp_t gfp); 1282 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1283 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1284 void ieee802_11_parse_elems(u8 *start, size_t len, 1285 struct ieee802_11_elems *elems); 1286 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1287 struct ieee802_11_elems *elems, 1288 u64 filter, u32 crc); 1289 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1290 enum ieee80211_band band); 1291 1292 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1293 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1294 void ieee80211_dynamic_ps_timer(unsigned long data); 1295 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1296 struct ieee80211_sub_if_data *sdata, 1297 int powersave); 1298 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1299 struct ieee80211_hdr *hdr); 1300 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1301 struct ieee80211_hdr *hdr, bool ack); 1302 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1303 1304 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1305 enum queue_stop_reason reason); 1306 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1307 enum queue_stop_reason reason); 1308 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1309 enum queue_stop_reason reason); 1310 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1311 enum queue_stop_reason reason); 1312 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1313 struct sk_buff *skb); 1314 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1315 struct sk_buff_head *skbs); 1316 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1317 struct sk_buff_head *skbs, 1318 void (*fn)(void *data), void *data); 1319 1320 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1321 u16 transaction, u16 auth_alg, 1322 u8 *extra, size_t extra_len, const u8 *bssid, 1323 const u8 *key, u8 key_len, u8 key_idx); 1324 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1325 const u8 *ie, size_t ie_len, 1326 enum ieee80211_band band, u32 rate_mask, 1327 u8 channel); 1328 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1329 u8 *dst, 1330 const u8 *ssid, size_t ssid_len, 1331 const u8 *ie, size_t ie_len); 1332 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1333 const u8 *ssid, size_t ssid_len, 1334 const u8 *ie, size_t ie_len); 1335 1336 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1337 const size_t supp_rates_len, 1338 const u8 *supp_rates); 1339 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1340 struct ieee802_11_elems *elems, 1341 enum ieee80211_band band); 1342 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1343 enum ieee80211_smps_mode smps_mode); 1344 void ieee80211_recalc_smps(struct ieee80211_local *local); 1345 1346 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1347 const u8 *ids, int n_ids, size_t offset); 1348 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1349 1350 /* internal work items */ 1351 void ieee80211_work_init(struct ieee80211_local *local); 1352 void ieee80211_add_work(struct ieee80211_work *wk); 1353 void free_work(struct ieee80211_work *wk); 1354 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1355 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1356 struct sk_buff *skb); 1357 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1358 struct ieee80211_channel *chan, 1359 enum nl80211_channel_type channel_type, 1360 unsigned int duration, u64 *cookie); 1361 int ieee80211_wk_cancel_remain_on_channel( 1362 struct ieee80211_sub_if_data *sdata, u64 cookie); 1363 1364 /* channel management */ 1365 enum ieee80211_chan_mode { 1366 CHAN_MODE_UNDEFINED, 1367 CHAN_MODE_HOPPING, 1368 CHAN_MODE_FIXED, 1369 }; 1370 1371 enum ieee80211_chan_mode 1372 ieee80211_get_channel_mode(struct ieee80211_local *local, 1373 struct ieee80211_sub_if_data *ignore); 1374 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1375 struct ieee80211_sub_if_data *sdata, 1376 enum nl80211_channel_type chantype); 1377 1378 #ifdef CONFIG_MAC80211_NOINLINE 1379 #define debug_noinline noinline 1380 #else 1381 #define debug_noinline 1382 #endif 1383 1384 #endif /* IEEE80211_I_H */ 1385