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 association, 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 __rcu *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 __rcu *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 __rcu *presp; 446 struct sk_buff *skb; 447 448 enum { 449 IEEE80211_IBSS_MLME_SEARCH, 450 IEEE80211_IBSS_MLME_JOINED, 451 } state; 452 }; 453 454 struct ieee80211_if_mesh { 455 struct timer_list housekeeping_timer; 456 struct timer_list mesh_path_timer; 457 struct timer_list mesh_path_root_timer; 458 459 unsigned long timers_running; 460 461 unsigned long wrkq_flags; 462 463 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 464 size_t mesh_id_len; 465 /* Active Path Selection Protocol Identifier */ 466 u8 mesh_pp_id; 467 /* Active Path Selection Metric Identifier */ 468 u8 mesh_pm_id; 469 /* Congestion Control Mode Identifier */ 470 u8 mesh_cc_id; 471 /* Synchronization Protocol Identifier */ 472 u8 mesh_sp_id; 473 /* Authentication Protocol Identifier */ 474 u8 mesh_auth_id; 475 /* Local mesh Sequence Number */ 476 u32 sn; 477 /* Last used PREQ ID */ 478 u32 preq_id; 479 atomic_t mpaths; 480 /* Timestamp of last SN update */ 481 unsigned long last_sn_update; 482 /* Timestamp of last SN sent */ 483 unsigned long last_preq; 484 struct mesh_rmc *rmc; 485 spinlock_t mesh_preq_queue_lock; 486 struct mesh_preq_queue preq_queue; 487 int preq_queue_len; 488 struct mesh_stats mshstats; 489 struct mesh_config mshcfg; 490 u32 mesh_seqnum; 491 bool accepting_plinks; 492 const u8 *ie; 493 u8 ie_len; 494 enum { 495 IEEE80211_MESH_SEC_NONE = 0x0, 496 IEEE80211_MESH_SEC_AUTHED = 0x1, 497 IEEE80211_MESH_SEC_SECURED = 0x2, 498 } security; 499 }; 500 501 #ifdef CONFIG_MAC80211_MESH 502 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 503 do { (msh)->mshstats.name++; } while (0) 504 #else 505 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 506 do { } while (0) 507 #endif 508 509 /** 510 * enum ieee80211_sub_if_data_flags - virtual interface flags 511 * 512 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 513 * @IEEE80211_SDATA_PROMISC: interface is promisc 514 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 515 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 516 * associated stations and deliver multicast frames both 517 * back to wireless media and to the local net stack. 518 */ 519 enum ieee80211_sub_if_data_flags { 520 IEEE80211_SDATA_ALLMULTI = BIT(0), 521 IEEE80211_SDATA_PROMISC = BIT(1), 522 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 523 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 524 }; 525 526 /** 527 * enum ieee80211_sdata_state_bits - virtual interface state bits 528 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 529 * mirrors netif_running() but is separate for interface type 530 * change handling while the interface is up 531 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 532 * mode, so queues are stopped 533 */ 534 enum ieee80211_sdata_state_bits { 535 SDATA_STATE_RUNNING, 536 SDATA_STATE_OFFCHANNEL, 537 }; 538 539 struct ieee80211_sub_if_data { 540 struct list_head list; 541 542 struct wireless_dev wdev; 543 544 /* keys */ 545 struct list_head key_list; 546 547 struct net_device *dev; 548 struct ieee80211_local *local; 549 550 unsigned int flags; 551 552 unsigned long state; 553 554 int drop_unencrypted; 555 556 char name[IFNAMSIZ]; 557 558 /* 559 * keep track of whether the HT opmode (stored in 560 * vif.bss_info.ht_operation_mode) is valid. 561 */ 562 bool ht_opmode_valid; 563 564 /* to detect idle changes */ 565 bool old_idle; 566 567 /* Fragment table for host-based reassembly */ 568 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 569 unsigned int fragment_next; 570 571 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 572 struct ieee80211_key __rcu *default_unicast_key; 573 struct ieee80211_key __rcu *default_multicast_key; 574 struct ieee80211_key __rcu *default_mgmt_key; 575 576 u16 sequence_number; 577 __be16 control_port_protocol; 578 bool control_port_no_encrypt; 579 580 struct work_struct work; 581 struct sk_buff_head skb_queue; 582 583 bool arp_filter_state; 584 585 /* 586 * AP this belongs to: self in AP mode and 587 * corresponding AP in VLAN mode, NULL for 588 * all others (might be needed later in IBSS) 589 */ 590 struct ieee80211_if_ap *bss; 591 592 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 593 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 594 595 union { 596 struct ieee80211_if_ap ap; 597 struct ieee80211_if_wds wds; 598 struct ieee80211_if_vlan vlan; 599 struct ieee80211_if_managed mgd; 600 struct ieee80211_if_ibss ibss; 601 struct ieee80211_if_mesh mesh; 602 u32 mntr_flags; 603 } u; 604 605 #ifdef CONFIG_MAC80211_DEBUGFS 606 struct { 607 struct dentry *dir; 608 struct dentry *subdir_stations; 609 struct dentry *default_unicast_key; 610 struct dentry *default_multicast_key; 611 struct dentry *default_mgmt_key; 612 } debugfs; 613 #endif 614 /* must be last, dynamically sized area in this! */ 615 struct ieee80211_vif vif; 616 }; 617 618 static inline 619 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 620 { 621 return container_of(p, struct ieee80211_sub_if_data, vif); 622 } 623 624 enum sdata_queue_type { 625 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 626 IEEE80211_SDATA_QUEUE_AGG_START = 1, 627 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 628 }; 629 630 enum { 631 IEEE80211_RX_MSG = 1, 632 IEEE80211_TX_STATUS_MSG = 2, 633 }; 634 635 enum queue_stop_reason { 636 IEEE80211_QUEUE_STOP_REASON_DRIVER, 637 IEEE80211_QUEUE_STOP_REASON_PS, 638 IEEE80211_QUEUE_STOP_REASON_CSA, 639 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 640 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 641 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 642 }; 643 644 #ifdef CONFIG_MAC80211_LEDS 645 struct tpt_led_trigger { 646 struct led_trigger trig; 647 char name[32]; 648 const struct ieee80211_tpt_blink *blink_table; 649 unsigned int blink_table_len; 650 struct timer_list timer; 651 unsigned long prev_traffic; 652 unsigned long tx_bytes, rx_bytes; 653 unsigned int active, want; 654 bool running; 655 }; 656 #endif 657 658 /** 659 * mac80211 scan flags - currently active scan mode 660 * 661 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 662 * well be on the operating channel 663 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 664 * determine if we are on the operating channel or not 665 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 666 * that the scan completed. 667 * @SCAN_ABORTED: Set for our scan work function when the driver reported 668 * a scan complete for an aborted scan. 669 */ 670 enum { 671 SCAN_SW_SCANNING, 672 SCAN_HW_SCANNING, 673 SCAN_COMPLETED, 674 SCAN_ABORTED, 675 }; 676 677 /** 678 * enum mac80211_scan_state - scan state machine states 679 * 680 * @SCAN_DECISION: Main entry point to the scan state machine, this state 681 * determines if we should keep on scanning or switch back to the 682 * operating channel 683 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 684 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 685 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 686 * about us leaving the channel and stop all associated STA interfaces 687 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 688 * AP about us being back and restart all associated STA interfaces 689 */ 690 enum mac80211_scan_state { 691 SCAN_DECISION, 692 SCAN_SET_CHANNEL, 693 SCAN_SEND_PROBE, 694 SCAN_LEAVE_OPER_CHANNEL, 695 SCAN_ENTER_OPER_CHANNEL, 696 }; 697 698 struct ieee80211_local { 699 /* embed the driver visible part. 700 * don't cast (use the static inlines below), but we keep 701 * it first anyway so they become a no-op */ 702 struct ieee80211_hw hw; 703 704 const struct ieee80211_ops *ops; 705 706 /* 707 * work stuff, potentially off-channel (in the future) 708 */ 709 struct list_head work_list; 710 struct timer_list work_timer; 711 struct work_struct work_work; 712 struct sk_buff_head work_skb_queue; 713 714 /* 715 * private workqueue to mac80211. mac80211 makes this accessible 716 * via ieee80211_queue_work() 717 */ 718 struct workqueue_struct *workqueue; 719 720 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 721 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 722 spinlock_t queue_stop_reason_lock; 723 724 int open_count; 725 int monitors, cooked_mntrs; 726 /* number of interfaces with corresponding FIF_ flags */ 727 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 728 fif_probe_req; 729 int probe_req_reg; 730 unsigned int filter_flags; /* FIF_* */ 731 732 bool wiphy_ciphers_allocated; 733 734 /* protects the aggregated multicast list and filter calls */ 735 spinlock_t filter_lock; 736 737 /* used for uploading changed mc list */ 738 struct work_struct reconfig_filter; 739 740 /* used to reconfigure hardware SM PS */ 741 struct work_struct recalc_smps; 742 743 /* aggregated multicast list */ 744 struct netdev_hw_addr_list mc_list; 745 746 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 747 748 /* 749 * suspended is true if we finished all the suspend _and_ we have 750 * not yet come up from resume. This is to be used by mac80211 751 * to ensure driver sanity during suspend and mac80211's own 752 * sanity. It can eventually be used for WoW as well. 753 */ 754 bool suspended; 755 756 /* 757 * Resuming is true while suspended, but when we're reprogramming the 758 * hardware -- at that time it's allowed to use ieee80211_queue_work() 759 * again even though some other parts of the stack are still suspended 760 * and we still drop received frames to avoid waking the stack. 761 */ 762 bool resuming; 763 764 /* 765 * quiescing is true during the suspend process _only_ to 766 * ease timer cancelling etc. 767 */ 768 bool quiescing; 769 770 /* device is started */ 771 bool started; 772 773 /* wowlan is enabled -- don't reconfig on resume */ 774 bool wowlan; 775 776 int tx_headroom; /* required headroom for hardware/radiotap */ 777 778 /* Tasklet and skb queue to process calls from IRQ mode. All frames 779 * added to skb_queue will be processed, but frames in 780 * skb_queue_unreliable may be dropped if the total length of these 781 * queues increases over the limit. */ 782 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 783 struct tasklet_struct tasklet; 784 struct sk_buff_head skb_queue; 785 struct sk_buff_head skb_queue_unreliable; 786 787 /* 788 * Internal FIFO queue which is shared between multiple rx path 789 * stages. Its main task is to provide a serialization mechanism, 790 * so all rx handlers can enjoy having exclusive access to their 791 * private data structures. 792 */ 793 struct sk_buff_head rx_skb_queue; 794 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 795 796 /* Station data */ 797 /* 798 * The mutex only protects the list and counter, 799 * reads are done in RCU. 800 * Additionally, the lock protects the hash table, 801 * the pending list and each BSS's TIM bitmap. 802 */ 803 struct mutex sta_mtx; 804 spinlock_t sta_lock; 805 unsigned long num_sta; 806 struct list_head sta_list, sta_pending_list; 807 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 808 struct timer_list sta_cleanup; 809 struct work_struct sta_finish_work; 810 int sta_generation; 811 812 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 813 struct tasklet_struct tx_pending_tasklet; 814 815 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 816 817 /* number of interfaces with corresponding IFF_ flags */ 818 atomic_t iff_allmultis, iff_promiscs; 819 820 struct rate_control_ref *rate_ctrl; 821 822 struct crypto_cipher *wep_tx_tfm; 823 struct crypto_cipher *wep_rx_tfm; 824 u32 wep_iv; 825 826 /* see iface.c */ 827 struct list_head interfaces; 828 struct mutex iflist_mtx; 829 830 /* 831 * Key mutex, protects sdata's key_list and sta_info's 832 * key pointers (write access, they're RCU.) 833 */ 834 struct mutex key_mtx; 835 836 /* mutex for scan and work locking */ 837 struct mutex mtx; 838 839 /* Scanning and BSS list */ 840 unsigned long scanning; 841 struct cfg80211_ssid scan_ssid; 842 struct cfg80211_scan_request *int_scan_req; 843 struct cfg80211_scan_request *scan_req, *hw_scan_req; 844 struct ieee80211_channel *scan_channel; 845 enum ieee80211_band hw_scan_band; 846 int scan_channel_idx; 847 int scan_ies_len; 848 849 bool sched_scanning; 850 struct ieee80211_sched_scan_ies sched_scan_ies; 851 struct work_struct sched_scan_stopped_work; 852 853 unsigned long leave_oper_channel_time; 854 enum mac80211_scan_state next_scan_state; 855 struct delayed_work scan_work; 856 struct ieee80211_sub_if_data *scan_sdata; 857 enum nl80211_channel_type _oper_channel_type; 858 struct ieee80211_channel *oper_channel, *csa_channel; 859 860 /* Temporary remain-on-channel for off-channel operations */ 861 struct ieee80211_channel *tmp_channel; 862 enum nl80211_channel_type tmp_channel_type; 863 864 /* SNMP counters */ 865 /* dot11CountersTable */ 866 u32 dot11TransmittedFragmentCount; 867 u32 dot11MulticastTransmittedFrameCount; 868 u32 dot11FailedCount; 869 u32 dot11RetryCount; 870 u32 dot11MultipleRetryCount; 871 u32 dot11FrameDuplicateCount; 872 u32 dot11ReceivedFragmentCount; 873 u32 dot11MulticastReceivedFrameCount; 874 u32 dot11TransmittedFrameCount; 875 876 #ifdef CONFIG_MAC80211_LEDS 877 int tx_led_counter, rx_led_counter; 878 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 879 struct tpt_led_trigger *tpt_led_trigger; 880 char tx_led_name[32], rx_led_name[32], 881 assoc_led_name[32], radio_led_name[32]; 882 #endif 883 884 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 885 /* TX/RX handler statistics */ 886 unsigned int tx_handlers_drop; 887 unsigned int tx_handlers_queued; 888 unsigned int tx_handlers_drop_unencrypted; 889 unsigned int tx_handlers_drop_fragment; 890 unsigned int tx_handlers_drop_wep; 891 unsigned int tx_handlers_drop_not_assoc; 892 unsigned int tx_handlers_drop_unauth_port; 893 unsigned int rx_handlers_drop; 894 unsigned int rx_handlers_queued; 895 unsigned int rx_handlers_drop_nullfunc; 896 unsigned int rx_handlers_drop_defrag; 897 unsigned int rx_handlers_drop_short; 898 unsigned int rx_handlers_drop_passive_scan; 899 unsigned int tx_expand_skb_head; 900 unsigned int tx_expand_skb_head_cloned; 901 unsigned int rx_expand_skb_head; 902 unsigned int rx_expand_skb_head2; 903 unsigned int rx_handlers_fragments; 904 unsigned int tx_status_drop; 905 #define I802_DEBUG_INC(c) (c)++ 906 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 907 #define I802_DEBUG_INC(c) do { } while (0) 908 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 909 910 911 int total_ps_buffered; /* total number of all buffered unicast and 912 * multicast packets for power saving stations 913 */ 914 int wifi_wme_noack_test; 915 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 916 917 /* 918 * Bitmask of enabled u-apsd queues, 919 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 920 * to take effect. 921 */ 922 unsigned int uapsd_queues; 923 924 /* 925 * Maximum number of buffered frames AP can deliver during a 926 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 927 * Needs a new association to take effect. 928 */ 929 unsigned int uapsd_max_sp_len; 930 931 bool pspolling; 932 bool offchannel_ps_enabled; 933 /* 934 * PS can only be enabled when we have exactly one managed 935 * interface (and monitors) in PS, this then points there. 936 */ 937 struct ieee80211_sub_if_data *ps_sdata; 938 struct work_struct dynamic_ps_enable_work; 939 struct work_struct dynamic_ps_disable_work; 940 struct timer_list dynamic_ps_timer; 941 struct notifier_block network_latency_notifier; 942 struct notifier_block ifa_notifier; 943 944 /* 945 * The dynamic ps timeout configured from user space via WEXT - 946 * this will override whatever chosen by mac80211 internally. 947 */ 948 int dynamic_ps_forced_timeout; 949 int dynamic_ps_user_timeout; 950 bool disable_dynamic_ps; 951 952 int user_power_level; /* in dBm */ 953 int power_constr_level; /* in dBm */ 954 955 enum ieee80211_smps_mode smps_mode; 956 957 struct work_struct restart_work; 958 959 #ifdef CONFIG_MAC80211_DEBUGFS 960 struct local_debugfsdentries { 961 struct dentry *rcdir; 962 struct dentry *keys; 963 } debugfs; 964 #endif 965 966 struct ieee80211_channel *hw_roc_channel; 967 struct net_device *hw_roc_dev; 968 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 969 struct work_struct hw_roc_start, hw_roc_done; 970 enum nl80211_channel_type hw_roc_channel_type; 971 unsigned int hw_roc_duration; 972 u32 hw_roc_cookie; 973 bool hw_roc_for_tx; 974 unsigned long hw_offchan_tx_cookie; 975 976 /* dummy netdev for use w/ NAPI */ 977 struct net_device napi_dev; 978 979 struct napi_struct napi; 980 }; 981 982 static inline struct ieee80211_sub_if_data * 983 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 984 { 985 return netdev_priv(dev); 986 } 987 988 /* this struct represents 802.11n's RA/TID combination */ 989 struct ieee80211_ra_tid { 990 u8 ra[ETH_ALEN]; 991 u16 tid; 992 }; 993 994 /* Parsed Information Elements */ 995 struct ieee802_11_elems { 996 u8 *ie_start; 997 size_t total_len; 998 999 /* pointers to IEs */ 1000 u8 *ssid; 1001 u8 *supp_rates; 1002 u8 *fh_params; 1003 u8 *ds_params; 1004 u8 *cf_params; 1005 struct ieee80211_tim_ie *tim; 1006 u8 *ibss_params; 1007 u8 *challenge; 1008 u8 *wpa; 1009 u8 *rsn; 1010 u8 *erp_info; 1011 u8 *ext_supp_rates; 1012 u8 *wmm_info; 1013 u8 *wmm_param; 1014 struct ieee80211_ht_cap *ht_cap_elem; 1015 struct ieee80211_ht_info *ht_info_elem; 1016 struct ieee80211_meshconf_ie *mesh_config; 1017 u8 *mesh_id; 1018 u8 *peer_link; 1019 u8 *preq; 1020 u8 *prep; 1021 u8 *perr; 1022 struct ieee80211_rann_ie *rann; 1023 u8 *ch_switch_elem; 1024 u8 *country_elem; 1025 u8 *pwr_constr_elem; 1026 u8 *quiet_elem; /* first quite element */ 1027 u8 *timeout_int; 1028 1029 /* length of them, respectively */ 1030 u8 ssid_len; 1031 u8 supp_rates_len; 1032 u8 fh_params_len; 1033 u8 ds_params_len; 1034 u8 cf_params_len; 1035 u8 tim_len; 1036 u8 ibss_params_len; 1037 u8 challenge_len; 1038 u8 wpa_len; 1039 u8 rsn_len; 1040 u8 erp_info_len; 1041 u8 ext_supp_rates_len; 1042 u8 wmm_info_len; 1043 u8 wmm_param_len; 1044 u8 mesh_id_len; 1045 u8 peer_link_len; 1046 u8 preq_len; 1047 u8 prep_len; 1048 u8 perr_len; 1049 u8 ch_switch_elem_len; 1050 u8 country_elem_len; 1051 u8 pwr_constr_elem_len; 1052 u8 quiet_elem_len; 1053 u8 num_of_quiet_elem; /* can be more the one */ 1054 u8 timeout_int_len; 1055 }; 1056 1057 static inline struct ieee80211_local *hw_to_local( 1058 struct ieee80211_hw *hw) 1059 { 1060 return container_of(hw, struct ieee80211_local, hw); 1061 } 1062 1063 static inline struct ieee80211_hw *local_to_hw( 1064 struct ieee80211_local *local) 1065 { 1066 return &local->hw; 1067 } 1068 1069 1070 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1071 { 1072 return compare_ether_addr(raddr, addr) == 0 || 1073 is_broadcast_ether_addr(raddr); 1074 } 1075 1076 1077 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1078 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1079 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1080 u32 changed); 1081 void ieee80211_configure_filter(struct ieee80211_local *local); 1082 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1083 1084 /* STA code */ 1085 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1086 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1087 struct cfg80211_auth_request *req); 1088 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1089 struct cfg80211_assoc_request *req); 1090 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1091 struct cfg80211_deauth_request *req, 1092 void *cookie); 1093 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1094 struct cfg80211_disassoc_request *req, 1095 void *cookie); 1096 void ieee80211_send_pspoll(struct ieee80211_local *local, 1097 struct ieee80211_sub_if_data *sdata); 1098 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1099 int ieee80211_max_network_latency(struct notifier_block *nb, 1100 unsigned long data, void *dummy); 1101 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1102 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1103 struct ieee80211_channel_sw_ie *sw_elem, 1104 struct ieee80211_bss *bss, 1105 u64 timestamp); 1106 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1107 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1108 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1109 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1110 struct sk_buff *skb); 1111 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1112 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1113 1114 /* IBSS code */ 1115 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1116 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1117 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1118 u8 *bssid, u8 *addr, u32 supp_rates, 1119 gfp_t gfp); 1120 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1121 struct cfg80211_ibss_params *params); 1122 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1123 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1124 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1125 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1126 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1127 struct sk_buff *skb); 1128 1129 /* mesh code */ 1130 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1131 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1132 struct sk_buff *skb); 1133 1134 /* scan/BSS handling */ 1135 void ieee80211_scan_work(struct work_struct *work); 1136 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1137 const u8 *ssid, u8 ssid_len, 1138 struct ieee80211_channel *chan); 1139 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1140 struct cfg80211_scan_request *req); 1141 void ieee80211_scan_cancel(struct ieee80211_local *local); 1142 ieee80211_rx_result 1143 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1144 1145 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1146 struct ieee80211_bss * 1147 ieee80211_bss_info_update(struct ieee80211_local *local, 1148 struct ieee80211_rx_status *rx_status, 1149 struct ieee80211_mgmt *mgmt, 1150 size_t len, 1151 struct ieee802_11_elems *elems, 1152 struct ieee80211_channel *channel, 1153 bool beacon); 1154 struct ieee80211_bss * 1155 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1156 u8 *ssid, u8 ssid_len); 1157 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1158 struct ieee80211_bss *bss); 1159 1160 /* scheduled scan handling */ 1161 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1162 struct cfg80211_sched_scan_request *req); 1163 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1164 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1165 1166 /* off-channel helpers */ 1167 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); 1168 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, 1169 bool tell_ap); 1170 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1171 bool offchannel_ps_enable); 1172 void ieee80211_offchannel_return(struct ieee80211_local *local, 1173 bool enable_beaconing, 1174 bool offchannel_ps_disable); 1175 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1176 1177 /* interface handling */ 1178 int ieee80211_iface_init(void); 1179 void ieee80211_iface_exit(void); 1180 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1181 struct net_device **new_dev, enum nl80211_iftype type, 1182 struct vif_params *params); 1183 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1184 enum nl80211_iftype type); 1185 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1186 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1187 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1188 void ieee80211_recalc_idle(struct ieee80211_local *local); 1189 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1190 const int offset); 1191 1192 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1193 { 1194 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1195 } 1196 1197 /* tx handling */ 1198 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1199 void ieee80211_tx_pending(unsigned long data); 1200 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1201 struct net_device *dev); 1202 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1203 struct net_device *dev); 1204 1205 /* 1206 * radiotap header for status frames 1207 */ 1208 struct ieee80211_tx_status_rtap_hdr { 1209 struct ieee80211_radiotap_header hdr; 1210 u8 rate; 1211 u8 padding_for_rate; 1212 __le16 tx_flags; 1213 u8 data_retries; 1214 } __packed; 1215 1216 1217 /* HT */ 1218 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1219 struct ieee80211_ht_cap *ht_cap_ie, 1220 struct ieee80211_sta_ht_cap *ht_cap); 1221 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1222 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1223 const u8 *da, u16 tid, 1224 u16 initiator, u16 reason_code); 1225 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1226 enum ieee80211_smps_mode smps, const u8 *da, 1227 const u8 *bssid); 1228 void ieee80211_request_smps_work(struct work_struct *work); 1229 1230 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1231 u16 initiator, u16 reason, bool stop); 1232 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1233 u16 initiator, u16 reason, bool stop); 1234 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1235 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1236 struct sta_info *sta, 1237 struct ieee80211_mgmt *mgmt, size_t len); 1238 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1239 struct sta_info *sta, 1240 struct ieee80211_mgmt *mgmt, 1241 size_t len); 1242 void ieee80211_process_addba_request(struct ieee80211_local *local, 1243 struct sta_info *sta, 1244 struct ieee80211_mgmt *mgmt, 1245 size_t len); 1246 1247 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1248 enum ieee80211_back_parties initiator, 1249 bool tx); 1250 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1251 enum ieee80211_back_parties initiator, 1252 bool tx); 1253 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1254 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1255 void ieee80211_ba_session_work(struct work_struct *work); 1256 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1257 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1258 1259 /* Spectrum management */ 1260 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1261 struct ieee80211_mgmt *mgmt, 1262 size_t len); 1263 1264 /* Suspend/resume and hw reconfiguration */ 1265 int ieee80211_reconfig(struct ieee80211_local *local); 1266 void ieee80211_stop_device(struct ieee80211_local *local); 1267 1268 #ifdef CONFIG_PM 1269 int __ieee80211_suspend(struct ieee80211_hw *hw, 1270 struct cfg80211_wowlan *wowlan); 1271 1272 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1273 { 1274 struct ieee80211_local *local = hw_to_local(hw); 1275 1276 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1277 "%s: resume with hardware scan still in progress\n", 1278 wiphy_name(hw->wiphy)); 1279 1280 return ieee80211_reconfig(hw_to_local(hw)); 1281 } 1282 #else 1283 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1284 struct cfg80211_wowlan *wowlan) 1285 { 1286 return 0; 1287 } 1288 1289 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1290 { 1291 return 0; 1292 } 1293 #endif 1294 1295 /* utility functions/constants */ 1296 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1297 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1298 enum nl80211_iftype type); 1299 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1300 int rate, int erp, int short_preamble); 1301 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1302 struct ieee80211_hdr *hdr, const u8 *tsc, 1303 gfp_t gfp); 1304 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1305 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1306 void ieee802_11_parse_elems(u8 *start, size_t len, 1307 struct ieee802_11_elems *elems); 1308 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1309 struct ieee802_11_elems *elems, 1310 u64 filter, u32 crc); 1311 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1312 enum ieee80211_band band); 1313 1314 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1315 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1316 void ieee80211_dynamic_ps_timer(unsigned long data); 1317 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1318 struct ieee80211_sub_if_data *sdata, 1319 int powersave); 1320 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1321 struct ieee80211_hdr *hdr); 1322 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1323 struct ieee80211_hdr *hdr, bool ack); 1324 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1325 1326 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1327 enum queue_stop_reason reason); 1328 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1329 enum queue_stop_reason reason); 1330 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1331 enum queue_stop_reason reason); 1332 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1333 enum queue_stop_reason reason); 1334 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1335 struct sk_buff *skb); 1336 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1337 struct sk_buff_head *skbs); 1338 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1339 struct sk_buff_head *skbs, 1340 void (*fn)(void *data), void *data); 1341 1342 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1343 u16 transaction, u16 auth_alg, 1344 u8 *extra, size_t extra_len, const u8 *bssid, 1345 const u8 *key, u8 key_len, u8 key_idx); 1346 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1347 const u8 *ie, size_t ie_len, 1348 enum ieee80211_band band, u32 rate_mask, 1349 u8 channel); 1350 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1351 u8 *dst, 1352 const u8 *ssid, size_t ssid_len, 1353 const u8 *ie, size_t ie_len); 1354 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1355 const u8 *ssid, size_t ssid_len, 1356 const u8 *ie, size_t ie_len); 1357 1358 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1359 const size_t supp_rates_len, 1360 const u8 *supp_rates); 1361 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1362 struct ieee802_11_elems *elems, 1363 enum ieee80211_band band); 1364 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1365 enum ieee80211_smps_mode smps_mode); 1366 void ieee80211_recalc_smps(struct ieee80211_local *local); 1367 1368 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1369 const u8 *ids, int n_ids, size_t offset); 1370 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1371 1372 /* internal work items */ 1373 void ieee80211_work_init(struct ieee80211_local *local); 1374 void ieee80211_add_work(struct ieee80211_work *wk); 1375 void free_work(struct ieee80211_work *wk); 1376 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1377 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1378 struct sk_buff *skb); 1379 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1380 struct ieee80211_channel *chan, 1381 enum nl80211_channel_type channel_type, 1382 unsigned int duration, u64 *cookie); 1383 int ieee80211_wk_cancel_remain_on_channel( 1384 struct ieee80211_sub_if_data *sdata, u64 cookie); 1385 1386 /* channel management */ 1387 enum ieee80211_chan_mode { 1388 CHAN_MODE_UNDEFINED, 1389 CHAN_MODE_HOPPING, 1390 CHAN_MODE_FIXED, 1391 }; 1392 1393 enum ieee80211_chan_mode 1394 ieee80211_get_channel_mode(struct ieee80211_local *local, 1395 struct ieee80211_sub_if_data *ignore); 1396 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1397 struct ieee80211_sub_if_data *sdata, 1398 enum nl80211_channel_type chantype); 1399 1400 #ifdef CONFIG_MAC80211_NOINLINE 1401 #define debug_noinline noinline 1402 #else 1403 #define debug_noinline 1404 #endif 1405 1406 #endif /* IEEE80211_I_H */ 1407