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 <linux/idr.h> 28#include <net/ieee80211_radiotap.h> 29#include <net/cfg80211.h> 30#include <net/mac80211.h> 31#include "key.h" 32#include "sta_info.h" 33#include "debug.h" 34 35struct ieee80211_local; 36 37/* Maximum number of broadcast/multicast frames to buffer when some of the 38 * associated stations are using power saving. */ 39#define AP_MAX_BC_BUFFER 128 40 41/* Maximum number of frames buffered to all STAs, including multicast frames. 42 * Note: increasing this limit increases the potential memory requirement. Each 43 * frame can be up to about 2 kB long. */ 44#define TOTAL_MAX_TX_BUFFER 512 45 46/* Required encryption head and tailroom */ 47#define IEEE80211_ENCRYPT_HEADROOM 8 48#define IEEE80211_ENCRYPT_TAILROOM 18 49 50/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 51 * reception of at least three fragmented frames. This limit can be increased 52 * by changing this define, at the cost of slower frame reassembly and 53 * increased memory use (about 2 kB of RAM per entry). */ 54#define IEEE80211_FRAGMENT_MAX 4 55 56#define TU_TO_JIFFIES(x) (usecs_to_jiffies((x) * 1024)) 57#define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x)) 58 59/* power level hasn't been configured (or set to automatic) */ 60#define IEEE80211_UNSET_POWER_LEVEL INT_MIN 61 62/* 63 * Some APs experience problems when working with U-APSD. Decrease the 64 * probability of that happening by using legacy mode for all ACs but VO. 65 * The AP that caused us trouble was a Cisco 4410N. It ignores our 66 * setting, and always treats non-VO ACs as legacy. 67 */ 68#define IEEE80211_DEFAULT_UAPSD_QUEUES \ 69 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 70 71#define IEEE80211_DEFAULT_MAX_SP_LEN \ 72 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 73 74#define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 75 76struct ieee80211_fragment_entry { 77 unsigned long first_frag_time; 78 unsigned int seq; 79 unsigned int rx_queue; 80 unsigned int last_frag; 81 unsigned int extra_len; 82 struct sk_buff_head skb_list; 83 int ccmp; /* Whether fragments were encrypted with CCMP */ 84 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 85}; 86 87 88struct ieee80211_bss { 89 u32 device_ts_beacon, device_ts_presp; 90 91 bool wmm_used; 92 bool uapsd_supported; 93 94#define IEEE80211_MAX_SUPP_RATES 32 95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 96 size_t supp_rates_len; 97 98 /* 99 * During association, we save an ERP value from a probe response so 100 * that we can feed ERP info to the driver when handling the 101 * association completes. these fields probably won't be up-to-date 102 * otherwise, you probably don't want to use them. 103 */ 104 bool has_erp_value; 105 u8 erp_value; 106 107 /* Keep track of the corruption of the last beacon/probe response. */ 108 u8 corrupt_data; 109 110 /* Keep track of what bits of information we have valid info for. */ 111 u8 valid_data; 112}; 113 114/** 115 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 116 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 117 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 118 * 119 * These are bss flags that are attached to a bss in the 120 * @corrupt_data field of &struct ieee80211_bss. 121 */ 122enum ieee80211_bss_corrupt_data_flags { 123 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 124 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 125}; 126 127/** 128 * enum ieee80211_valid_data_flags - BSS valid data flags 129 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 130 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 131 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 132 * 133 * These are bss flags that are attached to a bss in the 134 * @valid_data field of &struct ieee80211_bss. They show which parts 135 * of the data structure were recieved as a result of an un-corrupted 136 * beacon/probe response. 137 */ 138enum ieee80211_bss_valid_data_flags { 139 IEEE80211_BSS_VALID_WMM = BIT(1), 140 IEEE80211_BSS_VALID_RATES = BIT(2), 141 IEEE80211_BSS_VALID_ERP = BIT(3) 142}; 143 144typedef unsigned __bitwise__ ieee80211_tx_result; 145#define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 146#define TX_DROP ((__force ieee80211_tx_result) 1u) 147#define TX_QUEUED ((__force ieee80211_tx_result) 2u) 148 149#define IEEE80211_TX_UNICAST BIT(1) 150#define IEEE80211_TX_PS_BUFFERED BIT(2) 151 152struct ieee80211_tx_data { 153 struct sk_buff *skb; 154 struct sk_buff_head skbs; 155 struct ieee80211_local *local; 156 struct ieee80211_sub_if_data *sdata; 157 struct sta_info *sta; 158 struct ieee80211_key *key; 159 struct ieee80211_tx_rate rate; 160 161 unsigned int flags; 162}; 163 164 165typedef unsigned __bitwise__ ieee80211_rx_result; 166#define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 167#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 168#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 169#define RX_QUEUED ((__force ieee80211_rx_result) 3u) 170 171/** 172 * enum ieee80211_packet_rx_flags - packet RX flags 173 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 174 * (incl. multicast frames) 175 * @IEEE80211_RX_FRAGMENTED: fragmented frame 176 * @IEEE80211_RX_AMSDU: a-MSDU packet 177 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 178 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 179 * 180 * These are per-frame flags that are attached to a frame in the 181 * @rx_flags field of &struct ieee80211_rx_status. 182 */ 183enum ieee80211_packet_rx_flags { 184 IEEE80211_RX_RA_MATCH = BIT(1), 185 IEEE80211_RX_FRAGMENTED = BIT(2), 186 IEEE80211_RX_AMSDU = BIT(3), 187 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 188 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 189}; 190 191/** 192 * enum ieee80211_rx_flags - RX data flags 193 * 194 * @IEEE80211_RX_CMNTR: received on cooked monitor already 195 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 196 * to cfg80211_report_obss_beacon(). 197 * 198 * These flags are used across handling multiple interfaces 199 * for a single frame. 200 */ 201enum ieee80211_rx_flags { 202 IEEE80211_RX_CMNTR = BIT(0), 203 IEEE80211_RX_BEACON_REPORTED = BIT(1), 204}; 205 206struct ieee80211_rx_data { 207 struct sk_buff *skb; 208 struct ieee80211_local *local; 209 struct ieee80211_sub_if_data *sdata; 210 struct sta_info *sta; 211 struct ieee80211_key *key; 212 213 unsigned int flags; 214 215 /* 216 * Index into sequence numbers array, 0..16 217 * since the last (16) is used for non-QoS, 218 * will be 16 on non-QoS frames. 219 */ 220 int seqno_idx; 221 222 /* 223 * Index into the security IV/PN arrays, 0..16 224 * since the last (16) is used for CCMP-encrypted 225 * management frames, will be set to 16 on mgmt 226 * frames and 0 on non-QoS frames. 227 */ 228 int security_idx; 229 230 u32 tkip_iv32; 231 u16 tkip_iv16; 232}; 233 234struct beacon_data { 235 u8 *head, *tail; 236 int head_len, tail_len; 237 struct rcu_head rcu_head; 238}; 239 240struct probe_resp { 241 struct rcu_head rcu_head; 242 int len; 243 u8 data[0]; 244}; 245 246struct ps_data { 247 /* yes, this looks ugly, but guarantees that we can later use 248 * bitmap_empty :) 249 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 250 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 251 struct sk_buff_head bc_buf; 252 atomic_t num_sta_ps; /* number of stations in PS mode */ 253 int dtim_count; 254 bool dtim_bc_mc; 255}; 256 257struct ieee80211_if_ap { 258 struct beacon_data __rcu *beacon; 259 struct probe_resp __rcu *probe_resp; 260 261 struct list_head vlans; 262 263 struct ps_data ps; 264 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 265}; 266 267struct ieee80211_if_wds { 268 struct sta_info *sta; 269 u8 remote_addr[ETH_ALEN]; 270}; 271 272struct ieee80211_if_vlan { 273 struct list_head list; 274 275 /* used for all tx if the VLAN is configured to 4-addr mode */ 276 struct sta_info __rcu *sta; 277}; 278 279struct mesh_stats { 280 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 281 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 282 __u32 fwded_frames; /* Mesh total forwarded frames */ 283 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 284 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 285 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 286}; 287 288#define PREQ_Q_F_START 0x1 289#define PREQ_Q_F_REFRESH 0x2 290struct mesh_preq_queue { 291 struct list_head list; 292 u8 dst[ETH_ALEN]; 293 u8 flags; 294}; 295 296#if HZ/100 == 0 297#define IEEE80211_ROC_MIN_LEFT 1 298#else 299#define IEEE80211_ROC_MIN_LEFT (HZ/100) 300#endif 301 302struct ieee80211_roc_work { 303 struct list_head list; 304 struct list_head dependents; 305 306 struct delayed_work work; 307 308 struct ieee80211_sub_if_data *sdata; 309 310 struct ieee80211_channel *chan; 311 312 bool started, abort, hw_begun, notified; 313 bool to_be_freed; 314 315 unsigned long hw_start_time; 316 317 u32 duration, req_duration; 318 struct sk_buff *frame; 319 u64 cookie, mgmt_tx_cookie; 320 enum ieee80211_roc_type type; 321}; 322 323/* flags used in struct ieee80211_if_managed.flags */ 324enum ieee80211_sta_flags { 325 IEEE80211_STA_BEACON_POLL = BIT(0), 326 IEEE80211_STA_CONNECTION_POLL = BIT(1), 327 IEEE80211_STA_CONTROL_PORT = BIT(2), 328 IEEE80211_STA_DISABLE_HT = BIT(4), 329 IEEE80211_STA_CSA_RECEIVED = BIT(5), 330 IEEE80211_STA_MFP_ENABLED = BIT(6), 331 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 332 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 333 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 334 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 335 IEEE80211_STA_DISABLE_VHT = BIT(11), 336 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 337 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 338}; 339 340struct ieee80211_mgd_auth_data { 341 struct cfg80211_bss *bss; 342 unsigned long timeout; 343 int tries; 344 u16 algorithm, expected_transaction; 345 346 u8 key[WLAN_KEY_LEN_WEP104]; 347 u8 key_len, key_idx; 348 bool done; 349 bool timeout_started; 350 351 u16 sae_trans, sae_status; 352 size_t data_len; 353 u8 data[]; 354}; 355 356struct ieee80211_mgd_assoc_data { 357 struct cfg80211_bss *bss; 358 const u8 *supp_rates; 359 360 unsigned long timeout; 361 int tries; 362 363 u16 capability; 364 u8 prev_bssid[ETH_ALEN]; 365 u8 ssid[IEEE80211_MAX_SSID_LEN]; 366 u8 ssid_len; 367 u8 supp_rates_len; 368 bool wmm, uapsd; 369 bool have_beacon, need_beacon; 370 bool synced; 371 bool timeout_started; 372 373 u8 ap_ht_param; 374 375 struct ieee80211_vht_cap ap_vht_cap; 376 377 size_t ie_len; 378 u8 ie[]; 379}; 380 381struct ieee80211_if_managed { 382 struct timer_list timer; 383 struct timer_list conn_mon_timer; 384 struct timer_list bcn_mon_timer; 385 struct timer_list chswitch_timer; 386 struct work_struct monitor_work; 387 struct work_struct chswitch_work; 388 struct work_struct beacon_connection_loss_work; 389 struct work_struct csa_connection_drop_work; 390 391 unsigned long beacon_timeout; 392 unsigned long probe_timeout; 393 int probe_send_count; 394 bool nullfunc_failed; 395 bool connection_loss; 396 397 struct mutex mtx; 398 struct cfg80211_bss *associated; 399 struct ieee80211_mgd_auth_data *auth_data; 400 struct ieee80211_mgd_assoc_data *assoc_data; 401 402 u8 bssid[ETH_ALEN]; 403 404 u16 aid; 405 406 bool powersave; /* powersave requested for this iface */ 407 bool broken_ap; /* AP is broken -- turn off powersave */ 408 u8 dtim_period; 409 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 410 driver_smps_mode; /* smps mode request */ 411 412 struct work_struct request_smps_work; 413 414 unsigned int flags; 415 416 bool beacon_crc_valid; 417 u32 beacon_crc; 418 419 bool status_acked; 420 bool status_received; 421 __le16 status_fc; 422 423 enum { 424 IEEE80211_MFP_DISABLED, 425 IEEE80211_MFP_OPTIONAL, 426 IEEE80211_MFP_REQUIRED 427 } mfp; /* management frame protection */ 428 429 /* 430 * Bitmask of enabled u-apsd queues, 431 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 432 * to take effect. 433 */ 434 unsigned int uapsd_queues; 435 436 /* 437 * Maximum number of buffered frames AP can deliver during a 438 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 439 * Needs a new association to take effect. 440 */ 441 unsigned int uapsd_max_sp_len; 442 443 int wmm_last_param_set; 444 445 u8 use_4addr; 446 447 s16 p2p_noa_index; 448 449 /* Signal strength from the last Beacon frame in the current BSS. */ 450 int last_beacon_signal; 451 452 /* 453 * Weighted average of the signal strength from Beacon frames in the 454 * current BSS. This is in units of 1/16 of the signal unit to maintain 455 * accuracy and to speed up calculations, i.e., the value need to be 456 * divided by 16 to get the actual value. 457 */ 458 int ave_beacon_signal; 459 460 /* 461 * Number of Beacon frames used in ave_beacon_signal. This can be used 462 * to avoid generating less reliable cqm events that would be based 463 * only on couple of received frames. 464 */ 465 unsigned int count_beacon_signal; 466 467 /* 468 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 469 * that triggered a cqm event. 0 indicates that no event has been 470 * generated for the current association. 471 */ 472 int last_cqm_event_signal; 473 474 /* 475 * State variables for keeping track of RSSI of the AP currently 476 * connected to and informing driver when RSSI has gone 477 * below/above a certain threshold. 478 */ 479 int rssi_min_thold, rssi_max_thold; 480 int last_ave_beacon_signal; 481 482 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 483 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 484 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 485 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 486}; 487 488struct ieee80211_if_ibss { 489 struct timer_list timer; 490 491 struct mutex mtx; 492 493 unsigned long last_scan_completed; 494 495 u32 basic_rates; 496 497 bool fixed_bssid; 498 bool fixed_channel; 499 bool privacy; 500 501 bool control_port; 502 unsigned int auth_frame_registrations; 503 504 u8 bssid[ETH_ALEN] __aligned(2); 505 u8 ssid[IEEE80211_MAX_SSID_LEN]; 506 u8 ssid_len, ie_len; 507 u8 *ie; 508 struct ieee80211_channel *channel; 509 enum nl80211_channel_type channel_type; 510 511 unsigned long ibss_join_req; 512 /* probe response/beacon for IBSS */ 513 struct beacon_data __rcu *presp; 514 515 spinlock_t incomplete_lock; 516 struct list_head incomplete_stations; 517 518 enum { 519 IEEE80211_IBSS_MLME_SEARCH, 520 IEEE80211_IBSS_MLME_JOINED, 521 } state; 522}; 523 524/** 525 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 526 * 527 * these declarations define the interface, which enables 528 * vendor-specific mesh synchronization 529 * 530 */ 531struct ieee802_11_elems; 532struct ieee80211_mesh_sync_ops { 533 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 534 u16 stype, 535 struct ieee80211_mgmt *mgmt, 536 struct ieee802_11_elems *elems, 537 struct ieee80211_rx_status *rx_status); 538 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 539 /* add other framework functions here */ 540}; 541 542struct ieee80211_if_mesh { 543 struct timer_list housekeeping_timer; 544 struct timer_list mesh_path_timer; 545 struct timer_list mesh_path_root_timer; 546 547 unsigned long wrkq_flags; 548 549 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 550 size_t mesh_id_len; 551 /* Active Path Selection Protocol Identifier */ 552 u8 mesh_pp_id; 553 /* Active Path Selection Metric Identifier */ 554 u8 mesh_pm_id; 555 /* Congestion Control Mode Identifier */ 556 u8 mesh_cc_id; 557 /* Synchronization Protocol Identifier */ 558 u8 mesh_sp_id; 559 /* Authentication Protocol Identifier */ 560 u8 mesh_auth_id; 561 /* Local mesh Sequence Number */ 562 u32 sn; 563 /* Last used PREQ ID */ 564 u32 preq_id; 565 atomic_t mpaths; 566 /* Timestamp of last SN update */ 567 unsigned long last_sn_update; 568 /* Time when it's ok to send next PERR */ 569 unsigned long next_perr; 570 /* Timestamp of last PREQ sent */ 571 unsigned long last_preq; 572 struct mesh_rmc *rmc; 573 spinlock_t mesh_preq_queue_lock; 574 struct mesh_preq_queue preq_queue; 575 int preq_queue_len; 576 struct mesh_stats mshstats; 577 struct mesh_config mshcfg; 578 atomic_t estab_plinks; 579 u32 mesh_seqnum; 580 bool accepting_plinks; 581 int num_gates; 582 struct beacon_data __rcu *beacon; 583 /* just protects beacon updates for now */ 584 struct mutex mtx; 585 const u8 *ie; 586 u8 ie_len; 587 enum { 588 IEEE80211_MESH_SEC_NONE = 0x0, 589 IEEE80211_MESH_SEC_AUTHED = 0x1, 590 IEEE80211_MESH_SEC_SECURED = 0x2, 591 } security; 592 bool user_mpm; 593 /* Extensible Synchronization Framework */ 594 const struct ieee80211_mesh_sync_ops *sync_ops; 595 s64 sync_offset_clockdrift_max; 596 spinlock_t sync_offset_lock; 597 bool adjusting_tbtt; 598 /* mesh power save */ 599 enum nl80211_mesh_power_mode nonpeer_pm; 600 int ps_peers_light_sleep; 601 int ps_peers_deep_sleep; 602 struct ps_data ps; 603}; 604 605#ifdef CONFIG_MAC80211_MESH 606#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 607 do { (msh)->mshstats.name++; } while (0) 608#else 609#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 610 do { } while (0) 611#endif 612 613/** 614 * enum ieee80211_sub_if_data_flags - virtual interface flags 615 * 616 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 617 * @IEEE80211_SDATA_PROMISC: interface is promisc 618 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 619 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 620 * associated stations and deliver multicast frames both 621 * back to wireless media and to the local net stack. 622 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 623 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 624 */ 625enum ieee80211_sub_if_data_flags { 626 IEEE80211_SDATA_ALLMULTI = BIT(0), 627 IEEE80211_SDATA_PROMISC = BIT(1), 628 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 629 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 630 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 631 IEEE80211_SDATA_IN_DRIVER = BIT(5), 632}; 633 634/** 635 * enum ieee80211_sdata_state_bits - virtual interface state bits 636 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 637 * mirrors netif_running() but is separate for interface type 638 * change handling while the interface is up 639 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 640 * mode, so queues are stopped 641 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 642 * to offchannel, reset when offchannel returns 643 */ 644enum ieee80211_sdata_state_bits { 645 SDATA_STATE_RUNNING, 646 SDATA_STATE_OFFCHANNEL, 647 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 648}; 649 650/** 651 * enum ieee80211_chanctx_mode - channel context configuration mode 652 * 653 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 654 * multiple interfaces 655 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 656 * only by a single interface. This can be used for example for 657 * non-fixed channel IBSS. 658 */ 659enum ieee80211_chanctx_mode { 660 IEEE80211_CHANCTX_SHARED, 661 IEEE80211_CHANCTX_EXCLUSIVE 662}; 663 664struct ieee80211_chanctx { 665 struct list_head list; 666 struct rcu_head rcu_head; 667 668 enum ieee80211_chanctx_mode mode; 669 int refcount; 670 bool driver_present; 671 672 struct ieee80211_chanctx_conf conf; 673}; 674 675struct ieee80211_sub_if_data { 676 struct list_head list; 677 678 struct wireless_dev wdev; 679 680 /* keys */ 681 struct list_head key_list; 682 683 /* count for keys needing tailroom space allocation */ 684 int crypto_tx_tailroom_needed_cnt; 685 int crypto_tx_tailroom_pending_dec; 686 struct delayed_work dec_tailroom_needed_wk; 687 688 struct net_device *dev; 689 struct ieee80211_local *local; 690 691 unsigned int flags; 692 693 unsigned long state; 694 695 int drop_unencrypted; 696 697 char name[IFNAMSIZ]; 698 699 /* Fragment table for host-based reassembly */ 700 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 701 unsigned int fragment_next; 702 703 /* TID bitmap for NoAck policy */ 704 u16 noack_map; 705 706 /* bit field of ACM bits (BIT(802.1D tag)) */ 707 u8 wmm_acm; 708 709 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 710 struct ieee80211_key __rcu *default_unicast_key; 711 struct ieee80211_key __rcu *default_multicast_key; 712 struct ieee80211_key __rcu *default_mgmt_key; 713 714 u16 sequence_number; 715 __be16 control_port_protocol; 716 bool control_port_no_encrypt; 717 718 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 719 720 /* used to reconfigure hardware SM PS */ 721 struct work_struct recalc_smps; 722 723 struct work_struct work; 724 struct sk_buff_head skb_queue; 725 726 u8 needed_rx_chains; 727 enum ieee80211_smps_mode smps_mode; 728 729 int user_power_level; /* in dBm */ 730 int ap_power_level; /* in dBm */ 731 732 bool radar_required; 733 struct delayed_work dfs_cac_timer_work; 734 735 /* 736 * AP this belongs to: self in AP mode and 737 * corresponding AP in VLAN mode, NULL for 738 * all others (might be needed later in IBSS) 739 */ 740 struct ieee80211_if_ap *bss; 741 742 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 743 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 744 745 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 746 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 747 748 union { 749 struct ieee80211_if_ap ap; 750 struct ieee80211_if_wds wds; 751 struct ieee80211_if_vlan vlan; 752 struct ieee80211_if_managed mgd; 753 struct ieee80211_if_ibss ibss; 754 struct ieee80211_if_mesh mesh; 755 u32 mntr_flags; 756 } u; 757 758 spinlock_t cleanup_stations_lock; 759 struct list_head cleanup_stations; 760 struct work_struct cleanup_stations_wk; 761 762#ifdef CONFIG_MAC80211_DEBUGFS 763 struct { 764 struct dentry *subdir_stations; 765 struct dentry *default_unicast_key; 766 struct dentry *default_multicast_key; 767 struct dentry *default_mgmt_key; 768 } debugfs; 769#endif 770 771 /* must be last, dynamically sized area in this! */ 772 struct ieee80211_vif vif; 773}; 774 775static inline 776struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 777{ 778 return container_of(p, struct ieee80211_sub_if_data, vif); 779} 780 781static inline enum ieee80211_band 782ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 783{ 784 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 785 struct ieee80211_chanctx_conf *chanctx_conf; 786 787 rcu_read_lock(); 788 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 789 if (!WARN_ON(!chanctx_conf)) 790 band = chanctx_conf->def.chan->band; 791 rcu_read_unlock(); 792 793 return band; 794} 795 796enum sdata_queue_type { 797 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 798 IEEE80211_SDATA_QUEUE_AGG_START = 1, 799 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 800}; 801 802enum { 803 IEEE80211_RX_MSG = 1, 804 IEEE80211_TX_STATUS_MSG = 2, 805}; 806 807enum queue_stop_reason { 808 IEEE80211_QUEUE_STOP_REASON_DRIVER, 809 IEEE80211_QUEUE_STOP_REASON_PS, 810 IEEE80211_QUEUE_STOP_REASON_CSA, 811 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 812 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 813 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 814 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 815 IEEE80211_QUEUE_STOP_REASON_FLUSH, 816}; 817 818#ifdef CONFIG_MAC80211_LEDS 819struct tpt_led_trigger { 820 struct led_trigger trig; 821 char name[32]; 822 const struct ieee80211_tpt_blink *blink_table; 823 unsigned int blink_table_len; 824 struct timer_list timer; 825 unsigned long prev_traffic; 826 unsigned long tx_bytes, rx_bytes; 827 unsigned int active, want; 828 bool running; 829}; 830#endif 831 832/** 833 * mac80211 scan flags - currently active scan mode 834 * 835 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 836 * well be on the operating channel 837 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 838 * determine if we are on the operating channel or not 839 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 840 * channel. This should not interrupt normal traffic. 841 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 842 * that the scan completed. 843 * @SCAN_ABORTED: Set for our scan work function when the driver reported 844 * a scan complete for an aborted scan. 845 */ 846enum { 847 SCAN_SW_SCANNING, 848 SCAN_HW_SCANNING, 849 SCAN_ONCHANNEL_SCANNING, 850 SCAN_COMPLETED, 851 SCAN_ABORTED, 852}; 853 854/** 855 * enum mac80211_scan_state - scan state machine states 856 * 857 * @SCAN_DECISION: Main entry point to the scan state machine, this state 858 * determines if we should keep on scanning or switch back to the 859 * operating channel 860 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 861 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 862 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 863 * send out data 864 * @SCAN_RESUME: Resume the scan and scan the next channel 865 * @SCAN_ABORT: Abort the scan and go back to operating channel 866 */ 867enum mac80211_scan_state { 868 SCAN_DECISION, 869 SCAN_SET_CHANNEL, 870 SCAN_SEND_PROBE, 871 SCAN_SUSPEND, 872 SCAN_RESUME, 873 SCAN_ABORT, 874}; 875 876struct ieee80211_local { 877 /* embed the driver visible part. 878 * don't cast (use the static inlines below), but we keep 879 * it first anyway so they become a no-op */ 880 struct ieee80211_hw hw; 881 882 const struct ieee80211_ops *ops; 883 884 /* 885 * private workqueue to mac80211. mac80211 makes this accessible 886 * via ieee80211_queue_work() 887 */ 888 struct workqueue_struct *workqueue; 889 890 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 891 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 892 spinlock_t queue_stop_reason_lock; 893 894 int open_count; 895 int monitors, cooked_mntrs; 896 /* number of interfaces with corresponding FIF_ flags */ 897 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 898 fif_probe_req; 899 int probe_req_reg; 900 unsigned int filter_flags; /* FIF_* */ 901 902 bool wiphy_ciphers_allocated; 903 904 bool use_chanctx; 905 906 /* protects the aggregated multicast list and filter calls */ 907 spinlock_t filter_lock; 908 909 /* used for uploading changed mc list */ 910 struct work_struct reconfig_filter; 911 912 /* aggregated multicast list */ 913 struct netdev_hw_addr_list mc_list; 914 915 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 916 917 /* 918 * suspended is true if we finished all the suspend _and_ we have 919 * not yet come up from resume. This is to be used by mac80211 920 * to ensure driver sanity during suspend and mac80211's own 921 * sanity. It can eventually be used for WoW as well. 922 */ 923 bool suspended; 924 925 /* 926 * Resuming is true while suspended, but when we're reprogramming the 927 * hardware -- at that time it's allowed to use ieee80211_queue_work() 928 * again even though some other parts of the stack are still suspended 929 * and we still drop received frames to avoid waking the stack. 930 */ 931 bool resuming; 932 933 /* 934 * quiescing is true during the suspend process _only_ to 935 * ease timer cancelling etc. 936 */ 937 bool quiescing; 938 939 /* device is started */ 940 bool started; 941 942 /* device is during a HW reconfig */ 943 bool in_reconfig; 944 945 /* wowlan is enabled -- don't reconfig on resume */ 946 bool wowlan; 947 948 /* DFS/radar detection is enabled */ 949 bool radar_detect_enabled; 950 struct work_struct radar_detected_work; 951 952 /* number of RX chains the hardware has */ 953 u8 rx_chains; 954 955 int tx_headroom; /* required headroom for hardware/radiotap */ 956 957 /* Tasklet and skb queue to process calls from IRQ mode. All frames 958 * added to skb_queue will be processed, but frames in 959 * skb_queue_unreliable may be dropped if the total length of these 960 * queues increases over the limit. */ 961#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 962 struct tasklet_struct tasklet; 963 struct sk_buff_head skb_queue; 964 struct sk_buff_head skb_queue_unreliable; 965 966 spinlock_t rx_path_lock; 967 968 /* Station data */ 969 /* 970 * The mutex only protects the list, hash table and 971 * counter, reads are done with RCU. 972 */ 973 struct mutex sta_mtx; 974 spinlock_t tim_lock; 975 unsigned long num_sta; 976 struct list_head sta_list; 977 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 978 struct timer_list sta_cleanup; 979 int sta_generation; 980 981 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 982 struct tasklet_struct tx_pending_tasklet; 983 984 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 985 986 /* number of interfaces with corresponding IFF_ flags */ 987 atomic_t iff_allmultis, iff_promiscs; 988 989 struct rate_control_ref *rate_ctrl; 990 991 struct crypto_cipher *wep_tx_tfm; 992 struct crypto_cipher *wep_rx_tfm; 993 u32 wep_iv; 994 995 /* see iface.c */ 996 struct list_head interfaces; 997 struct mutex iflist_mtx; 998 999 /* 1000 * Key mutex, protects sdata's key_list and sta_info's 1001 * key pointers (write access, they're RCU.) 1002 */ 1003 struct mutex key_mtx; 1004 1005 /* mutex for scan and work locking */ 1006 struct mutex mtx; 1007 1008 /* Scanning and BSS list */ 1009 unsigned long scanning; 1010 struct cfg80211_ssid scan_ssid; 1011 struct cfg80211_scan_request *int_scan_req; 1012 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1013 struct ieee80211_channel *scan_channel; 1014 enum ieee80211_band hw_scan_band; 1015 int scan_channel_idx; 1016 int scan_ies_len; 1017 int hw_scan_ies_bufsize; 1018 1019 struct work_struct sched_scan_stopped_work; 1020 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1021 1022 unsigned long leave_oper_channel_time; 1023 enum mac80211_scan_state next_scan_state; 1024 struct delayed_work scan_work; 1025 struct ieee80211_sub_if_data __rcu *scan_sdata; 1026 struct cfg80211_chan_def csa_chandef; 1027 /* For backward compatibility only -- do not use */ 1028 struct cfg80211_chan_def _oper_chandef; 1029 1030 /* Temporary remain-on-channel for off-channel operations */ 1031 struct ieee80211_channel *tmp_channel; 1032 1033 /* channel contexts */ 1034 struct list_head chanctx_list; 1035 struct mutex chanctx_mtx; 1036 1037 /* SNMP counters */ 1038 /* dot11CountersTable */ 1039 u32 dot11TransmittedFragmentCount; 1040 u32 dot11MulticastTransmittedFrameCount; 1041 u32 dot11FailedCount; 1042 u32 dot11RetryCount; 1043 u32 dot11MultipleRetryCount; 1044 u32 dot11FrameDuplicateCount; 1045 u32 dot11ReceivedFragmentCount; 1046 u32 dot11MulticastReceivedFrameCount; 1047 u32 dot11TransmittedFrameCount; 1048 1049#ifdef CONFIG_MAC80211_LEDS 1050 int tx_led_counter, rx_led_counter; 1051 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1052 struct tpt_led_trigger *tpt_led_trigger; 1053 char tx_led_name[32], rx_led_name[32], 1054 assoc_led_name[32], radio_led_name[32]; 1055#endif 1056 1057#ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1058 /* TX/RX handler statistics */ 1059 unsigned int tx_handlers_drop; 1060 unsigned int tx_handlers_queued; 1061 unsigned int tx_handlers_drop_unencrypted; 1062 unsigned int tx_handlers_drop_fragment; 1063 unsigned int tx_handlers_drop_wep; 1064 unsigned int tx_handlers_drop_not_assoc; 1065 unsigned int tx_handlers_drop_unauth_port; 1066 unsigned int rx_handlers_drop; 1067 unsigned int rx_handlers_queued; 1068 unsigned int rx_handlers_drop_nullfunc; 1069 unsigned int rx_handlers_drop_defrag; 1070 unsigned int rx_handlers_drop_short; 1071 unsigned int tx_expand_skb_head; 1072 unsigned int tx_expand_skb_head_cloned; 1073 unsigned int rx_expand_skb_head; 1074 unsigned int rx_expand_skb_head2; 1075 unsigned int rx_handlers_fragments; 1076 unsigned int tx_status_drop; 1077#define I802_DEBUG_INC(c) (c)++ 1078#else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1079#define I802_DEBUG_INC(c) do { } while (0) 1080#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1081 1082 1083 int total_ps_buffered; /* total number of all buffered unicast and 1084 * multicast packets for power saving stations 1085 */ 1086 1087 bool pspolling; 1088 bool offchannel_ps_enabled; 1089 /* 1090 * PS can only be enabled when we have exactly one managed 1091 * interface (and monitors) in PS, this then points there. 1092 */ 1093 struct ieee80211_sub_if_data *ps_sdata; 1094 struct work_struct dynamic_ps_enable_work; 1095 struct work_struct dynamic_ps_disable_work; 1096 struct timer_list dynamic_ps_timer; 1097 struct notifier_block network_latency_notifier; 1098 struct notifier_block ifa_notifier; 1099 struct notifier_block ifa6_notifier; 1100 1101 /* 1102 * The dynamic ps timeout configured from user space via WEXT - 1103 * this will override whatever chosen by mac80211 internally. 1104 */ 1105 int dynamic_ps_forced_timeout; 1106 1107 int user_power_level; /* in dBm, for all interfaces */ 1108 1109 enum ieee80211_smps_mode smps_mode; 1110 1111 struct work_struct restart_work; 1112 1113#ifdef CONFIG_MAC80211_DEBUGFS 1114 struct local_debugfsdentries { 1115 struct dentry *rcdir; 1116 struct dentry *keys; 1117 } debugfs; 1118#endif 1119 1120 /* 1121 * Remain-on-channel support 1122 */ 1123 struct list_head roc_list; 1124 struct work_struct hw_roc_start, hw_roc_done; 1125 unsigned long hw_roc_start_time; 1126 u64 roc_cookie_counter; 1127 1128 struct idr ack_status_frames; 1129 spinlock_t ack_status_lock; 1130 1131 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1132 1133 /* virtual monitor interface */ 1134 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1135 struct cfg80211_chan_def monitor_chandef; 1136}; 1137 1138static inline struct ieee80211_sub_if_data * 1139IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1140{ 1141 return netdev_priv(dev); 1142} 1143 1144static inline struct ieee80211_sub_if_data * 1145IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1146{ 1147 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1148} 1149 1150/* this struct represents 802.11n's RA/TID combination */ 1151struct ieee80211_ra_tid { 1152 u8 ra[ETH_ALEN]; 1153 u16 tid; 1154}; 1155 1156/* Parsed Information Elements */ 1157struct ieee802_11_elems { 1158 const u8 *ie_start; 1159 size_t total_len; 1160 1161 /* pointers to IEs */ 1162 const u8 *ssid; 1163 const u8 *supp_rates; 1164 const u8 *ds_params; 1165 const struct ieee80211_tim_ie *tim; 1166 const u8 *challenge; 1167 const u8 *rsn; 1168 const u8 *erp_info; 1169 const u8 *ext_supp_rates; 1170 const u8 *wmm_info; 1171 const u8 *wmm_param; 1172 const struct ieee80211_ht_cap *ht_cap_elem; 1173 const struct ieee80211_ht_operation *ht_operation; 1174 const struct ieee80211_vht_cap *vht_cap_elem; 1175 const struct ieee80211_vht_operation *vht_operation; 1176 const struct ieee80211_meshconf_ie *mesh_config; 1177 const u8 *mesh_id; 1178 const u8 *peering; 1179 const __le16 *awake_window; 1180 const u8 *preq; 1181 const u8 *prep; 1182 const u8 *perr; 1183 const struct ieee80211_rann_ie *rann; 1184 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1185 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1186 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1187 const u8 *country_elem; 1188 const u8 *pwr_constr_elem; 1189 const struct ieee80211_timeout_interval_ie *timeout_int; 1190 const u8 *opmode_notif; 1191 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1192 1193 /* length of them, respectively */ 1194 u8 ssid_len; 1195 u8 supp_rates_len; 1196 u8 tim_len; 1197 u8 challenge_len; 1198 u8 rsn_len; 1199 u8 ext_supp_rates_len; 1200 u8 wmm_info_len; 1201 u8 wmm_param_len; 1202 u8 mesh_id_len; 1203 u8 peering_len; 1204 u8 preq_len; 1205 u8 prep_len; 1206 u8 perr_len; 1207 u8 country_elem_len; 1208 1209 /* whether a parse error occurred while retrieving these elements */ 1210 bool parse_error; 1211}; 1212 1213static inline struct ieee80211_local *hw_to_local( 1214 struct ieee80211_hw *hw) 1215{ 1216 return container_of(hw, struct ieee80211_local, hw); 1217} 1218 1219 1220static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1221{ 1222 return ether_addr_equal(raddr, addr) || 1223 is_broadcast_ether_addr(raddr); 1224} 1225 1226static inline bool 1227ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1228{ 1229 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1230 status->flag & RX_FLAG_MACTIME_END); 1231 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1232} 1233 1234u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1235 struct ieee80211_rx_status *status, 1236 unsigned int mpdu_len, 1237 unsigned int mpdu_offset); 1238int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1239void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1240void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1241 u32 changed); 1242void ieee80211_configure_filter(struct ieee80211_local *local); 1243u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1244 1245/* STA code */ 1246void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1247int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1248 struct cfg80211_auth_request *req); 1249int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1250 struct cfg80211_assoc_request *req); 1251int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1252 struct cfg80211_deauth_request *req); 1253int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1254 struct cfg80211_disassoc_request *req); 1255void ieee80211_send_pspoll(struct ieee80211_local *local, 1256 struct ieee80211_sub_if_data *sdata); 1257void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1258void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1259int ieee80211_max_network_latency(struct notifier_block *nb, 1260 unsigned long data, void *dummy); 1261int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1262void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1263void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1264 struct sk_buff *skb); 1265void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1266void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1267void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1268void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1269 __le16 fc, bool acked); 1270void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1271 1272/* IBSS code */ 1273void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1274void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1275void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1276 const u8 *bssid, const u8 *addr, u32 supp_rates); 1277int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1278 struct cfg80211_ibss_params *params); 1279int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1280void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1281void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1282 struct sk_buff *skb); 1283 1284/* mesh code */ 1285void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1286void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1287 struct sk_buff *skb); 1288 1289/* scan/BSS handling */ 1290void ieee80211_scan_work(struct work_struct *work); 1291int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1292 const u8 *ssid, u8 ssid_len, 1293 struct ieee80211_channel *chan); 1294int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1295 struct cfg80211_scan_request *req); 1296void ieee80211_scan_cancel(struct ieee80211_local *local); 1297void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1298void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1299 1300void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1301struct ieee80211_bss * 1302ieee80211_bss_info_update(struct ieee80211_local *local, 1303 struct ieee80211_rx_status *rx_status, 1304 struct ieee80211_mgmt *mgmt, 1305 size_t len, 1306 struct ieee802_11_elems *elems, 1307 struct ieee80211_channel *channel); 1308void ieee80211_rx_bss_put(struct ieee80211_local *local, 1309 struct ieee80211_bss *bss); 1310 1311/* scheduled scan handling */ 1312int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1313 struct cfg80211_sched_scan_request *req); 1314int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1315void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1316 1317/* off-channel helpers */ 1318void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1319void ieee80211_offchannel_return(struct ieee80211_local *local); 1320void ieee80211_roc_setup(struct ieee80211_local *local); 1321void ieee80211_start_next_roc(struct ieee80211_local *local); 1322void ieee80211_roc_purge(struct ieee80211_local *local, 1323 struct ieee80211_sub_if_data *sdata); 1324void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1325void ieee80211_sw_roc_work(struct work_struct *work); 1326void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1327 1328/* interface handling */ 1329int ieee80211_iface_init(void); 1330void ieee80211_iface_exit(void); 1331int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1332 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1333 struct vif_params *params); 1334int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1335 enum nl80211_iftype type); 1336void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1337void ieee80211_remove_interfaces(struct ieee80211_local *local); 1338u32 ieee80211_idle_off(struct ieee80211_local *local); 1339void ieee80211_recalc_idle(struct ieee80211_local *local); 1340void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1341 const int offset); 1342int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1343void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1344int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1345void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1346 1347bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1348void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1349 1350static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1351{ 1352 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1353} 1354 1355/* tx handling */ 1356void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1357void ieee80211_tx_pending(unsigned long data); 1358netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1359 struct net_device *dev); 1360netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1361 struct net_device *dev); 1362void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1363 struct sk_buff_head *skbs); 1364 1365/* HT */ 1366void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1367 struct ieee80211_sta_ht_cap *ht_cap); 1368bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1369 struct ieee80211_supported_band *sband, 1370 const struct ieee80211_ht_cap *ht_cap_ie, 1371 struct sta_info *sta); 1372void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1373 const u8 *da, u16 tid, 1374 u16 initiator, u16 reason_code); 1375int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1376 enum ieee80211_smps_mode smps, const u8 *da, 1377 const u8 *bssid); 1378void ieee80211_request_smps_work(struct work_struct *work); 1379 1380void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1381 u16 initiator, u16 reason, bool stop); 1382void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1383 u16 initiator, u16 reason, bool stop); 1384void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1385 enum ieee80211_agg_stop_reason reason); 1386void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1387 struct sta_info *sta, 1388 struct ieee80211_mgmt *mgmt, size_t len); 1389void ieee80211_process_addba_resp(struct ieee80211_local *local, 1390 struct sta_info *sta, 1391 struct ieee80211_mgmt *mgmt, 1392 size_t len); 1393void ieee80211_process_addba_request(struct ieee80211_local *local, 1394 struct sta_info *sta, 1395 struct ieee80211_mgmt *mgmt, 1396 size_t len); 1397 1398int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1399 enum ieee80211_agg_stop_reason reason); 1400int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1401 enum ieee80211_agg_stop_reason reason); 1402void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1403void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1404void ieee80211_ba_session_work(struct work_struct *work); 1405void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1406void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1407 1408u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1409 1410/* VHT */ 1411void 1412ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1413 struct ieee80211_supported_band *sband, 1414 const struct ieee80211_vht_cap *vht_cap_ie, 1415 struct sta_info *sta); 1416enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1417void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1418void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1419 struct sta_info *sta, u8 opmode, 1420 enum ieee80211_band band, bool nss_only); 1421void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1422 struct ieee80211_sta_vht_cap *vht_cap); 1423 1424/* Spectrum management */ 1425void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1426 struct ieee80211_mgmt *mgmt, 1427 size_t len); 1428 1429/* Suspend/resume and hw reconfiguration */ 1430int ieee80211_reconfig(struct ieee80211_local *local); 1431void ieee80211_stop_device(struct ieee80211_local *local); 1432 1433int __ieee80211_suspend(struct ieee80211_hw *hw, 1434 struct cfg80211_wowlan *wowlan); 1435 1436static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1437{ 1438 struct ieee80211_local *local = hw_to_local(hw); 1439 1440 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1441 "%s: resume with hardware scan still in progress\n", 1442 wiphy_name(hw->wiphy)); 1443 1444 return ieee80211_reconfig(hw_to_local(hw)); 1445} 1446 1447/* utility functions/constants */ 1448extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1449u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1450 enum nl80211_iftype type); 1451int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1452 int rate, int erp, int short_preamble); 1453void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1454 struct ieee80211_hdr *hdr, const u8 *tsc, 1455 gfp_t gfp); 1456void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1457 bool bss_notify); 1458void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1459 enum ieee80211_band band); 1460 1461void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1462 struct sk_buff *skb, int tid, 1463 enum ieee80211_band band); 1464 1465static inline void 1466ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1467 struct sk_buff *skb, int tid, 1468 enum ieee80211_band band) 1469{ 1470 rcu_read_lock(); 1471 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1472 rcu_read_unlock(); 1473} 1474 1475static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1476 struct sk_buff *skb, int tid) 1477{ 1478 struct ieee80211_chanctx_conf *chanctx_conf; 1479 1480 rcu_read_lock(); 1481 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1482 if (WARN_ON(!chanctx_conf)) { 1483 rcu_read_unlock(); 1484 kfree_skb(skb); 1485 return; 1486 } 1487 1488 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1489 chanctx_conf->def.chan->band); 1490 rcu_read_unlock(); 1491} 1492 1493static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1494 struct sk_buff *skb) 1495{ 1496 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1497 ieee80211_tx_skb_tid(sdata, skb, 7); 1498} 1499 1500u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1501 struct ieee802_11_elems *elems, 1502 u64 filter, u32 crc); 1503static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1504 bool action, 1505 struct ieee802_11_elems *elems) 1506{ 1507 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1508} 1509 1510u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1511 enum ieee80211_band band); 1512 1513void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1514void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1515void ieee80211_dynamic_ps_timer(unsigned long data); 1516void ieee80211_send_nullfunc(struct ieee80211_local *local, 1517 struct ieee80211_sub_if_data *sdata, 1518 int powersave); 1519void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1520 struct ieee80211_hdr *hdr); 1521void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1522 struct ieee80211_hdr *hdr, bool ack); 1523 1524void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1525 unsigned long queues, 1526 enum queue_stop_reason reason); 1527void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1528 unsigned long queues, 1529 enum queue_stop_reason reason); 1530void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1531 enum queue_stop_reason reason); 1532void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1533 enum queue_stop_reason reason); 1534void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1535void ieee80211_add_pending_skb(struct ieee80211_local *local, 1536 struct sk_buff *skb); 1537void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1538 struct sk_buff_head *skbs, 1539 void (*fn)(void *data), void *data); 1540static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1541 struct sk_buff_head *skbs) 1542{ 1543 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1544} 1545void ieee80211_flush_queues(struct ieee80211_local *local, 1546 struct ieee80211_sub_if_data *sdata); 1547 1548void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1549 u16 transaction, u16 auth_alg, u16 status, 1550 const u8 *extra, size_t extra_len, const u8 *bssid, 1551 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1552 u32 tx_flags); 1553void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1554 const u8 *bssid, u16 stype, u16 reason, 1555 bool send_frame, u8 *frame_buf); 1556int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1557 size_t buffer_len, const u8 *ie, size_t ie_len, 1558 enum ieee80211_band band, u32 rate_mask, 1559 u8 channel); 1560struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1561 u8 *dst, u32 ratemask, 1562 struct ieee80211_channel *chan, 1563 const u8 *ssid, size_t ssid_len, 1564 const u8 *ie, size_t ie_len, 1565 bool directed); 1566void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1567 const u8 *ssid, size_t ssid_len, 1568 const u8 *ie, size_t ie_len, 1569 u32 ratemask, bool directed, u32 tx_flags, 1570 struct ieee80211_channel *channel, bool scan); 1571 1572void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1573 const size_t supp_rates_len, 1574 const u8 *supp_rates); 1575u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1576 struct ieee802_11_elems *elems, 1577 enum ieee80211_band band, u32 *basic_rates); 1578int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1579 enum ieee80211_smps_mode smps_mode); 1580void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1581 1582size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1583 const u8 *ids, int n_ids, size_t offset); 1584size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1585u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1586 u16 cap); 1587u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1588 const struct cfg80211_chan_def *chandef, 1589 u16 prot_mode); 1590u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1591 u32 cap); 1592int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1593 struct sk_buff *skb, bool need_basic, 1594 enum ieee80211_band band); 1595int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1596 struct sk_buff *skb, bool need_basic, 1597 enum ieee80211_band band); 1598 1599/* channel management */ 1600void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1601 const struct ieee80211_ht_operation *ht_oper, 1602 struct cfg80211_chan_def *chandef); 1603 1604int __must_check 1605ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1606 const struct cfg80211_chan_def *chandef, 1607 enum ieee80211_chanctx_mode mode); 1608int __must_check 1609ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1610 const struct cfg80211_chan_def *chandef, 1611 u32 *changed); 1612void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1613void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1614void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1615 bool clear); 1616 1617void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1618 struct ieee80211_chanctx *chanctx); 1619void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1620 struct ieee80211_chanctx *chanctx); 1621 1622void ieee80211_dfs_cac_timer(unsigned long data); 1623void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1624void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1625void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1626 1627#ifdef CONFIG_MAC80211_NOINLINE 1628#define debug_noinline noinline 1629#else 1630#define debug_noinline 1631#endif 1632 1633#endif /* IEEE80211_I_H */ 1634