1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2015 Intel Mobile Communications GmbH 8 * Copyright (C) 2018-2020 Intel Corporation 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <linux/leds.h> 26 #include <linux/idr.h> 27 #include <linux/rhashtable.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include <net/fq.h> 32 #include "key.h" 33 #include "sta_info.h" 34 #include "debug.h" 35 36 extern const struct cfg80211_ops mac80211_config_ops; 37 38 struct ieee80211_local; 39 40 /* Maximum number of broadcast/multicast frames to buffer when some of the 41 * associated stations are using power saving. */ 42 #define AP_MAX_BC_BUFFER 128 43 44 /* Maximum number of frames buffered to all STAs, including multicast frames. 45 * Note: increasing this limit increases the potential memory requirement. Each 46 * frame can be up to about 2 kB long. */ 47 #define TOTAL_MAX_TX_BUFFER 512 48 49 /* Required encryption head and tailroom */ 50 #define IEEE80211_ENCRYPT_HEADROOM 8 51 #define IEEE80211_ENCRYPT_TAILROOM 18 52 53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 54 * reception of at least three fragmented frames. This limit can be increased 55 * by changing this define, at the cost of slower frame reassembly and 56 * increased memory use (about 2 kB of RAM per entry). */ 57 #define IEEE80211_FRAGMENT_MAX 4 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. Decreasing the 64 * probability of that happening by using legacy mode for all ACs but VO isn't 65 * enough. 66 * 67 * Cisco 4410N originally forced us to enable VO by default only because it 68 * treated non-VO ACs as legacy. 69 * 70 * However some APs (notably Netgear R7000) silently reclassify packets to 71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 72 * clients would never see some frames (e.g. ARP responses) or would fetch them 73 * accidentally after a long time. 74 * 75 * It makes little sense to enable u-APSD queues by default because it needs 76 * userspace applications to be aware of it to actually take advantage of the 77 * possible additional powersavings. Implicitly depending on driver autotrigger 78 * frame support doesn't make much sense. 79 */ 80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 81 82 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 84 85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 86 87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 88 89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 90 91 struct ieee80211_fragment_entry { 92 struct sk_buff_head skb_list; 93 unsigned long first_frag_time; 94 u16 seq; 95 u16 extra_len; 96 u16 last_frag; 97 u8 rx_queue; 98 bool check_sequential_pn; /* needed for CCMP/GCMP */ 99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 100 }; 101 102 103 struct ieee80211_bss { 104 u32 device_ts_beacon, device_ts_presp; 105 106 bool wmm_used; 107 bool uapsd_supported; 108 109 #define IEEE80211_MAX_SUPP_RATES 32 110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 111 size_t supp_rates_len; 112 struct ieee80211_rate *beacon_rate; 113 114 u32 vht_cap_info; 115 116 /* 117 * During association, we save an ERP value from a probe response so 118 * that we can feed ERP info to the driver when handling the 119 * association completes. these fields probably won't be up-to-date 120 * otherwise, you probably don't want to use them. 121 */ 122 bool has_erp_value; 123 u8 erp_value; 124 125 /* Keep track of the corruption of the last beacon/probe response. */ 126 u8 corrupt_data; 127 128 /* Keep track of what bits of information we have valid info for. */ 129 u8 valid_data; 130 }; 131 132 /** 133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 136 * 137 * These are bss flags that are attached to a bss in the 138 * @corrupt_data field of &struct ieee80211_bss. 139 */ 140 enum ieee80211_bss_corrupt_data_flags { 141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 143 }; 144 145 /** 146 * enum ieee80211_valid_data_flags - BSS valid data flags 147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 150 * 151 * These are bss flags that are attached to a bss in the 152 * @valid_data field of &struct ieee80211_bss. They show which parts 153 * of the data structure were received as a result of an un-corrupted 154 * beacon/probe response. 155 */ 156 enum ieee80211_bss_valid_data_flags { 157 IEEE80211_BSS_VALID_WMM = BIT(1), 158 IEEE80211_BSS_VALID_RATES = BIT(2), 159 IEEE80211_BSS_VALID_ERP = BIT(3) 160 }; 161 162 typedef unsigned __bitwise ieee80211_tx_result; 163 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 164 #define TX_DROP ((__force ieee80211_tx_result) 1u) 165 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 166 167 #define IEEE80211_TX_UNICAST BIT(1) 168 #define IEEE80211_TX_PS_BUFFERED BIT(2) 169 170 struct ieee80211_tx_data { 171 struct sk_buff *skb; 172 struct sk_buff_head skbs; 173 struct ieee80211_local *local; 174 struct ieee80211_sub_if_data *sdata; 175 struct sta_info *sta; 176 struct ieee80211_key *key; 177 struct ieee80211_tx_rate rate; 178 179 unsigned int flags; 180 }; 181 182 183 typedef unsigned __bitwise ieee80211_rx_result; 184 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 185 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 186 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 187 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 188 189 /** 190 * enum ieee80211_packet_rx_flags - packet RX flags 191 * @IEEE80211_RX_AMSDU: a-MSDU packet 192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 194 * 195 * These are per-frame flags that are attached to a frame in the 196 * @rx_flags field of &struct ieee80211_rx_status. 197 */ 198 enum ieee80211_packet_rx_flags { 199 IEEE80211_RX_AMSDU = BIT(3), 200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 202 }; 203 204 /** 205 * enum ieee80211_rx_flags - RX data flags 206 * 207 * @IEEE80211_RX_CMNTR: received on cooked monitor already 208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 209 * to cfg80211_report_obss_beacon(). 210 * 211 * These flags are used across handling multiple interfaces 212 * for a single frame. 213 */ 214 enum ieee80211_rx_flags { 215 IEEE80211_RX_CMNTR = BIT(0), 216 IEEE80211_RX_BEACON_REPORTED = BIT(1), 217 }; 218 219 struct ieee80211_rx_data { 220 struct list_head *list; 221 struct sk_buff *skb; 222 struct ieee80211_local *local; 223 struct ieee80211_sub_if_data *sdata; 224 struct sta_info *sta; 225 struct ieee80211_key *key; 226 227 unsigned int flags; 228 229 /* 230 * Index into sequence numbers array, 0..16 231 * since the last (16) is used for non-QoS, 232 * will be 16 on non-QoS frames. 233 */ 234 int seqno_idx; 235 236 /* 237 * Index into the security IV/PN arrays, 0..16 238 * since the last (16) is used for CCMP-encrypted 239 * management frames, will be set to 16 on mgmt 240 * frames and 0 on non-QoS frames. 241 */ 242 int security_idx; 243 244 u32 tkip_iv32; 245 u16 tkip_iv16; 246 }; 247 248 struct ieee80211_csa_settings { 249 const u16 *counter_offsets_beacon; 250 const u16 *counter_offsets_presp; 251 252 int n_counter_offsets_beacon; 253 int n_counter_offsets_presp; 254 255 u8 count; 256 }; 257 258 struct beacon_data { 259 u8 *head, *tail; 260 int head_len, tail_len; 261 struct ieee80211_meshconf_ie *meshconf; 262 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 263 u8 cntdwn_current_counter; 264 struct rcu_head rcu_head; 265 }; 266 267 struct probe_resp { 268 struct rcu_head rcu_head; 269 int len; 270 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 271 u8 data[]; 272 }; 273 274 struct fils_discovery_data { 275 struct rcu_head rcu_head; 276 int len; 277 u8 data[]; 278 }; 279 280 struct unsol_bcast_probe_resp_data { 281 struct rcu_head rcu_head; 282 int len; 283 u8 data[]; 284 }; 285 286 struct ps_data { 287 /* yes, this looks ugly, but guarantees that we can later use 288 * bitmap_empty :) 289 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 290 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 291 __aligned(__alignof__(unsigned long)); 292 struct sk_buff_head bc_buf; 293 atomic_t num_sta_ps; /* number of stations in PS mode */ 294 int dtim_count; 295 bool dtim_bc_mc; 296 }; 297 298 struct ieee80211_if_ap { 299 struct beacon_data __rcu *beacon; 300 struct probe_resp __rcu *probe_resp; 301 struct fils_discovery_data __rcu *fils_discovery; 302 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 303 304 /* to be used after channel switch. */ 305 struct cfg80211_beacon_data *next_beacon; 306 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 307 308 struct ps_data ps; 309 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 310 311 bool multicast_to_unicast; 312 }; 313 314 struct ieee80211_if_vlan { 315 struct list_head list; /* write-protected with RTNL and local->mtx */ 316 317 /* used for all tx if the VLAN is configured to 4-addr mode */ 318 struct sta_info __rcu *sta; 319 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 320 }; 321 322 struct mesh_stats { 323 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 324 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 325 __u32 fwded_frames; /* Mesh total forwarded frames */ 326 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 327 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 328 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 329 }; 330 331 #define PREQ_Q_F_START 0x1 332 #define PREQ_Q_F_REFRESH 0x2 333 struct mesh_preq_queue { 334 struct list_head list; 335 u8 dst[ETH_ALEN]; 336 u8 flags; 337 }; 338 339 struct ieee80211_roc_work { 340 struct list_head list; 341 342 struct ieee80211_sub_if_data *sdata; 343 344 struct ieee80211_channel *chan; 345 346 bool started, abort, hw_begun, notified; 347 bool on_channel; 348 349 unsigned long start_time; 350 351 u32 duration, req_duration; 352 struct sk_buff *frame; 353 u64 cookie, mgmt_tx_cookie; 354 enum ieee80211_roc_type type; 355 }; 356 357 /* flags used in struct ieee80211_if_managed.flags */ 358 enum ieee80211_sta_flags { 359 IEEE80211_STA_CONNECTION_POLL = BIT(1), 360 IEEE80211_STA_CONTROL_PORT = BIT(2), 361 IEEE80211_STA_DISABLE_HT = BIT(4), 362 IEEE80211_STA_MFP_ENABLED = BIT(6), 363 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 364 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 365 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 366 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 367 IEEE80211_STA_DISABLE_VHT = BIT(11), 368 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 369 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 370 IEEE80211_STA_DISABLE_WMM = BIT(14), 371 IEEE80211_STA_ENABLE_RRM = BIT(15), 372 IEEE80211_STA_DISABLE_HE = BIT(16), 373 }; 374 375 struct ieee80211_mgd_auth_data { 376 struct cfg80211_bss *bss; 377 unsigned long timeout; 378 int tries; 379 u16 algorithm, expected_transaction; 380 381 u8 key[WLAN_KEY_LEN_WEP104]; 382 u8 key_len, key_idx; 383 bool done; 384 bool peer_confirmed; 385 bool timeout_started; 386 387 u16 sae_trans, sae_status; 388 size_t data_len; 389 u8 data[]; 390 }; 391 392 struct ieee80211_mgd_assoc_data { 393 struct cfg80211_bss *bss; 394 const u8 *supp_rates; 395 396 unsigned long timeout; 397 int tries; 398 399 u16 capability; 400 u8 prev_bssid[ETH_ALEN]; 401 u8 ssid[IEEE80211_MAX_SSID_LEN]; 402 u8 ssid_len; 403 u8 supp_rates_len; 404 bool wmm, uapsd; 405 bool need_beacon; 406 bool synced; 407 bool timeout_started; 408 409 u8 ap_ht_param; 410 411 struct ieee80211_vht_cap ap_vht_cap; 412 413 u8 fils_nonces[2 * FILS_NONCE_LEN]; 414 u8 fils_kek[FILS_MAX_KEK_LEN]; 415 size_t fils_kek_len; 416 417 size_t ie_len; 418 u8 ie[]; 419 }; 420 421 struct ieee80211_sta_tx_tspec { 422 /* timestamp of the first packet in the time slice */ 423 unsigned long time_slice_start; 424 425 u32 admitted_time; /* in usecs, unlike over the air */ 426 u8 tsid; 427 s8 up; /* signed to be able to invalidate with -1 during teardown */ 428 429 /* consumed TX time in microseconds in the time slice */ 430 u32 consumed_tx_time; 431 enum { 432 TX_TSPEC_ACTION_NONE = 0, 433 TX_TSPEC_ACTION_DOWNGRADE, 434 TX_TSPEC_ACTION_STOP_DOWNGRADE, 435 } action; 436 bool downgraded; 437 }; 438 439 DECLARE_EWMA(beacon_signal, 4, 4) 440 441 struct ieee80211_if_managed { 442 struct timer_list timer; 443 struct timer_list conn_mon_timer; 444 struct timer_list bcn_mon_timer; 445 struct timer_list chswitch_timer; 446 struct work_struct monitor_work; 447 struct work_struct chswitch_work; 448 struct work_struct beacon_connection_loss_work; 449 struct work_struct csa_connection_drop_work; 450 451 unsigned long beacon_timeout; 452 unsigned long probe_timeout; 453 int probe_send_count; 454 bool nullfunc_failed; 455 u8 connection_loss:1, 456 driver_disconnect:1, 457 reconnect:1; 458 459 struct cfg80211_bss *associated; 460 struct ieee80211_mgd_auth_data *auth_data; 461 struct ieee80211_mgd_assoc_data *assoc_data; 462 463 u8 bssid[ETH_ALEN] __aligned(2); 464 465 bool powersave; /* powersave requested for this iface */ 466 bool broken_ap; /* AP is broken -- turn off powersave */ 467 bool have_beacon; 468 u8 dtim_period; 469 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 470 driver_smps_mode; /* smps mode request */ 471 472 struct work_struct request_smps_work; 473 474 unsigned int flags; 475 476 bool csa_waiting_bcn; 477 bool csa_ignored_same_chan; 478 479 bool beacon_crc_valid; 480 u32 beacon_crc; 481 482 bool status_acked; 483 bool status_received; 484 __le16 status_fc; 485 486 enum { 487 IEEE80211_MFP_DISABLED, 488 IEEE80211_MFP_OPTIONAL, 489 IEEE80211_MFP_REQUIRED 490 } mfp; /* management frame protection */ 491 492 /* 493 * Bitmask of enabled u-apsd queues, 494 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 495 * to take effect. 496 */ 497 unsigned int uapsd_queues; 498 499 /* 500 * Maximum number of buffered frames AP can deliver during a 501 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 502 * Needs a new association to take effect. 503 */ 504 unsigned int uapsd_max_sp_len; 505 506 int wmm_last_param_set; 507 int mu_edca_last_param_set; 508 509 u8 use_4addr; 510 511 s16 p2p_noa_index; 512 513 struct ewma_beacon_signal ave_beacon_signal; 514 515 /* 516 * Number of Beacon frames used in ave_beacon_signal. This can be used 517 * to avoid generating less reliable cqm events that would be based 518 * only on couple of received frames. 519 */ 520 unsigned int count_beacon_signal; 521 522 /* Number of times beacon loss was invoked. */ 523 unsigned int beacon_loss_count; 524 525 /* 526 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 527 * that triggered a cqm event. 0 indicates that no event has been 528 * generated for the current association. 529 */ 530 int last_cqm_event_signal; 531 532 /* 533 * State variables for keeping track of RSSI of the AP currently 534 * connected to and informing driver when RSSI has gone 535 * below/above a certain threshold. 536 */ 537 int rssi_min_thold, rssi_max_thold; 538 int last_ave_beacon_signal; 539 540 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 541 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 542 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 543 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 544 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 545 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 546 547 /* TDLS support */ 548 u8 tdls_peer[ETH_ALEN] __aligned(2); 549 struct delayed_work tdls_peer_del_work; 550 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 551 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 552 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 553 bool tdls_chan_switch_prohibited; 554 bool tdls_wider_bw_prohibited; 555 556 /* WMM-AC TSPEC support */ 557 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 558 /* Use a separate work struct so that we can do something here 559 * while the sdata->work is flushing the queues, for example. 560 * otherwise, in scenarios where we hardly get any traffic out 561 * on the BE queue, but there's a lot of VO traffic, we might 562 * get stuck in a downgraded situation and flush takes forever. 563 */ 564 struct delayed_work tx_tspec_wk; 565 566 /* Information elements from the last transmitted (Re)Association 567 * Request frame. 568 */ 569 u8 *assoc_req_ies; 570 size_t assoc_req_ies_len; 571 }; 572 573 struct ieee80211_if_ibss { 574 struct timer_list timer; 575 struct work_struct csa_connection_drop_work; 576 577 unsigned long last_scan_completed; 578 579 u32 basic_rates; 580 581 bool fixed_bssid; 582 bool fixed_channel; 583 bool privacy; 584 585 bool control_port; 586 bool userspace_handles_dfs; 587 588 u8 bssid[ETH_ALEN] __aligned(2); 589 u8 ssid[IEEE80211_MAX_SSID_LEN]; 590 u8 ssid_len, ie_len; 591 u8 *ie; 592 struct cfg80211_chan_def chandef; 593 594 unsigned long ibss_join_req; 595 /* probe response/beacon for IBSS */ 596 struct beacon_data __rcu *presp; 597 598 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 599 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 600 601 spinlock_t incomplete_lock; 602 struct list_head incomplete_stations; 603 604 enum { 605 IEEE80211_IBSS_MLME_SEARCH, 606 IEEE80211_IBSS_MLME_JOINED, 607 } state; 608 }; 609 610 /** 611 * struct ieee80211_if_ocb - OCB mode state 612 * 613 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 614 * @wrkq_flags: OCB deferred task action 615 * @incomplete_lock: delayed STA insertion lock 616 * @incomplete_stations: list of STAs waiting for delayed insertion 617 * @joined: indication if the interface is connected to an OCB network 618 */ 619 struct ieee80211_if_ocb { 620 struct timer_list housekeeping_timer; 621 unsigned long wrkq_flags; 622 623 spinlock_t incomplete_lock; 624 struct list_head incomplete_stations; 625 626 bool joined; 627 }; 628 629 /** 630 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 631 * 632 * these declarations define the interface, which enables 633 * vendor-specific mesh synchronization 634 * 635 */ 636 struct ieee802_11_elems; 637 struct ieee80211_mesh_sync_ops { 638 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 639 u16 stype, 640 struct ieee80211_mgmt *mgmt, 641 struct ieee802_11_elems *elems, 642 struct ieee80211_rx_status *rx_status); 643 644 /* should be called with beacon_data under RCU read lock */ 645 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 646 struct beacon_data *beacon); 647 /* add other framework functions here */ 648 }; 649 650 struct mesh_csa_settings { 651 struct rcu_head rcu_head; 652 struct cfg80211_csa_settings settings; 653 }; 654 655 struct ieee80211_if_mesh { 656 struct timer_list housekeeping_timer; 657 struct timer_list mesh_path_timer; 658 struct timer_list mesh_path_root_timer; 659 660 unsigned long wrkq_flags; 661 unsigned long mbss_changed; 662 663 bool userspace_handles_dfs; 664 665 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 666 size_t mesh_id_len; 667 /* Active Path Selection Protocol Identifier */ 668 u8 mesh_pp_id; 669 /* Active Path Selection Metric Identifier */ 670 u8 mesh_pm_id; 671 /* Congestion Control Mode Identifier */ 672 u8 mesh_cc_id; 673 /* Synchronization Protocol Identifier */ 674 u8 mesh_sp_id; 675 /* Authentication Protocol Identifier */ 676 u8 mesh_auth_id; 677 /* Local mesh Sequence Number */ 678 u32 sn; 679 /* Last used PREQ ID */ 680 u32 preq_id; 681 atomic_t mpaths; 682 /* Timestamp of last SN update */ 683 unsigned long last_sn_update; 684 /* Time when it's ok to send next PERR */ 685 unsigned long next_perr; 686 /* Timestamp of last PREQ sent */ 687 unsigned long last_preq; 688 struct mesh_rmc *rmc; 689 spinlock_t mesh_preq_queue_lock; 690 struct mesh_preq_queue preq_queue; 691 int preq_queue_len; 692 struct mesh_stats mshstats; 693 struct mesh_config mshcfg; 694 atomic_t estab_plinks; 695 u32 mesh_seqnum; 696 bool accepting_plinks; 697 int num_gates; 698 struct beacon_data __rcu *beacon; 699 const u8 *ie; 700 u8 ie_len; 701 enum { 702 IEEE80211_MESH_SEC_NONE = 0x0, 703 IEEE80211_MESH_SEC_AUTHED = 0x1, 704 IEEE80211_MESH_SEC_SECURED = 0x2, 705 } security; 706 bool user_mpm; 707 /* Extensible Synchronization Framework */ 708 const struct ieee80211_mesh_sync_ops *sync_ops; 709 s64 sync_offset_clockdrift_max; 710 spinlock_t sync_offset_lock; 711 /* mesh power save */ 712 enum nl80211_mesh_power_mode nonpeer_pm; 713 int ps_peers_light_sleep; 714 int ps_peers_deep_sleep; 715 struct ps_data ps; 716 /* Channel Switching Support */ 717 struct mesh_csa_settings __rcu *csa; 718 enum { 719 IEEE80211_MESH_CSA_ROLE_NONE, 720 IEEE80211_MESH_CSA_ROLE_INIT, 721 IEEE80211_MESH_CSA_ROLE_REPEATER, 722 } csa_role; 723 u8 chsw_ttl; 724 u16 pre_value; 725 726 /* offset from skb->data while building IE */ 727 int meshconf_offset; 728 729 struct mesh_table *mesh_paths; 730 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 731 int mesh_paths_generation; 732 int mpp_paths_generation; 733 }; 734 735 #ifdef CONFIG_MAC80211_MESH 736 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 737 do { (msh)->mshstats.name++; } while (0) 738 #else 739 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 740 do { } while (0) 741 #endif 742 743 /** 744 * enum ieee80211_sub_if_data_flags - virtual interface flags 745 * 746 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 747 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 748 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 749 * associated stations and deliver multicast frames both 750 * back to wireless media and to the local net stack. 751 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 752 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 753 */ 754 enum ieee80211_sub_if_data_flags { 755 IEEE80211_SDATA_ALLMULTI = BIT(0), 756 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 757 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 758 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 759 IEEE80211_SDATA_IN_DRIVER = BIT(5), 760 }; 761 762 /** 763 * enum ieee80211_sdata_state_bits - virtual interface state bits 764 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 765 * mirrors netif_running() but is separate for interface type 766 * change handling while the interface is up 767 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 768 * mode, so queues are stopped 769 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 770 * to offchannel, reset when offchannel returns 771 */ 772 enum ieee80211_sdata_state_bits { 773 SDATA_STATE_RUNNING, 774 SDATA_STATE_OFFCHANNEL, 775 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 776 }; 777 778 /** 779 * enum ieee80211_chanctx_mode - channel context configuration mode 780 * 781 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 782 * multiple interfaces 783 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 784 * only by a single interface. This can be used for example for 785 * non-fixed channel IBSS. 786 */ 787 enum ieee80211_chanctx_mode { 788 IEEE80211_CHANCTX_SHARED, 789 IEEE80211_CHANCTX_EXCLUSIVE 790 }; 791 792 /** 793 * enum ieee80211_chanctx_replace_state - channel context replacement state 794 * 795 * This is used for channel context in-place reservations that require channel 796 * context switch/swap. 797 * 798 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 799 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 800 * by a (not yet registered) channel context pointed by %replace_ctx. 801 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 802 * replaces an existing channel context pointed to by %replace_ctx. 803 */ 804 enum ieee80211_chanctx_replace_state { 805 IEEE80211_CHANCTX_REPLACE_NONE, 806 IEEE80211_CHANCTX_WILL_BE_REPLACED, 807 IEEE80211_CHANCTX_REPLACES_OTHER, 808 }; 809 810 struct ieee80211_chanctx { 811 struct list_head list; 812 struct rcu_head rcu_head; 813 814 struct list_head assigned_vifs; 815 struct list_head reserved_vifs; 816 817 enum ieee80211_chanctx_replace_state replace_state; 818 struct ieee80211_chanctx *replace_ctx; 819 820 enum ieee80211_chanctx_mode mode; 821 bool driver_present; 822 823 struct ieee80211_chanctx_conf conf; 824 }; 825 826 struct mac80211_qos_map { 827 struct cfg80211_qos_map qos_map; 828 struct rcu_head rcu_head; 829 }; 830 831 enum txq_info_flags { 832 IEEE80211_TXQ_STOP, 833 IEEE80211_TXQ_AMPDU, 834 IEEE80211_TXQ_NO_AMSDU, 835 IEEE80211_TXQ_STOP_NETIF_TX, 836 }; 837 838 /** 839 * struct txq_info - per tid queue 840 * 841 * @tin: contains packets split into multiple flows 842 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 843 * a fq_flow which is already owned by a different tin 844 * @def_cvars: codel vars for @def_flow 845 * @frags: used to keep fragments created after dequeue 846 * @schedule_order: used with ieee80211_local->active_txqs 847 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 848 */ 849 struct txq_info { 850 struct fq_tin tin; 851 struct codel_vars def_cvars; 852 struct codel_stats cstats; 853 struct sk_buff_head frags; 854 struct list_head schedule_order; 855 u16 schedule_round; 856 unsigned long flags; 857 858 /* keep last! */ 859 struct ieee80211_txq txq; 860 }; 861 862 struct ieee80211_if_mntr { 863 u32 flags; 864 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 865 866 struct list_head list; 867 }; 868 869 /** 870 * struct ieee80211_if_nan - NAN state 871 * 872 * @conf: current NAN configuration 873 * @func_ids: a bitmap of available instance_id's 874 */ 875 struct ieee80211_if_nan { 876 struct cfg80211_nan_conf conf; 877 878 /* protects function_inst_ids */ 879 spinlock_t func_lock; 880 struct idr function_inst_ids; 881 }; 882 883 struct ieee80211_sub_if_data { 884 struct list_head list; 885 886 struct wireless_dev wdev; 887 888 /* keys */ 889 struct list_head key_list; 890 891 /* count for keys needing tailroom space allocation */ 892 int crypto_tx_tailroom_needed_cnt; 893 int crypto_tx_tailroom_pending_dec; 894 struct delayed_work dec_tailroom_needed_wk; 895 896 struct net_device *dev; 897 struct ieee80211_local *local; 898 899 unsigned int flags; 900 901 unsigned long state; 902 903 char name[IFNAMSIZ]; 904 905 /* Fragment table for host-based reassembly */ 906 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 907 unsigned int fragment_next; 908 909 /* TID bitmap for NoAck policy */ 910 u16 noack_map; 911 912 /* bit field of ACM bits (BIT(802.1D tag)) */ 913 u8 wmm_acm; 914 915 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 916 NUM_DEFAULT_MGMT_KEYS + 917 NUM_DEFAULT_BEACON_KEYS]; 918 struct ieee80211_key __rcu *default_unicast_key; 919 struct ieee80211_key __rcu *default_multicast_key; 920 struct ieee80211_key __rcu *default_mgmt_key; 921 struct ieee80211_key __rcu *default_beacon_key; 922 923 u16 sequence_number; 924 __be16 control_port_protocol; 925 bool control_port_no_encrypt; 926 bool control_port_no_preauth; 927 bool control_port_over_nl80211; 928 int encrypt_headroom; 929 930 atomic_t num_tx_queued; 931 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 932 struct mac80211_qos_map __rcu *qos_map; 933 934 struct work_struct csa_finalize_work; 935 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 936 struct cfg80211_chan_def csa_chandef; 937 938 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 939 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 940 941 /* context reservation -- protected with chanctx_mtx */ 942 struct ieee80211_chanctx *reserved_chanctx; 943 struct cfg80211_chan_def reserved_chandef; 944 bool reserved_radar_required; 945 bool reserved_ready; 946 947 /* used to reconfigure hardware SM PS */ 948 struct work_struct recalc_smps; 949 950 struct work_struct work; 951 struct sk_buff_head skb_queue; 952 953 u8 needed_rx_chains; 954 enum ieee80211_smps_mode smps_mode; 955 956 int user_power_level; /* in dBm */ 957 int ap_power_level; /* in dBm */ 958 959 bool radar_required; 960 struct delayed_work dfs_cac_timer_work; 961 962 /* 963 * AP this belongs to: self in AP mode and 964 * corresponding AP in VLAN mode, NULL for 965 * all others (might be needed later in IBSS) 966 */ 967 struct ieee80211_if_ap *bss; 968 969 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 970 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 971 972 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 973 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 974 975 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 976 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 977 978 /* Beacon frame (non-MCS) rate (as a bitmap) */ 979 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 980 bool beacon_rate_set; 981 982 union { 983 struct ieee80211_if_ap ap; 984 struct ieee80211_if_vlan vlan; 985 struct ieee80211_if_managed mgd; 986 struct ieee80211_if_ibss ibss; 987 struct ieee80211_if_mesh mesh; 988 struct ieee80211_if_ocb ocb; 989 struct ieee80211_if_mntr mntr; 990 struct ieee80211_if_nan nan; 991 } u; 992 993 #ifdef CONFIG_MAC80211_DEBUGFS 994 struct { 995 struct dentry *subdir_stations; 996 struct dentry *default_unicast_key; 997 struct dentry *default_multicast_key; 998 struct dentry *default_mgmt_key; 999 struct dentry *default_beacon_key; 1000 } debugfs; 1001 #endif 1002 1003 /* must be last, dynamically sized area in this! */ 1004 struct ieee80211_vif vif; 1005 }; 1006 1007 static inline 1008 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1009 { 1010 return container_of(p, struct ieee80211_sub_if_data, vif); 1011 } 1012 1013 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1014 __acquires(&sdata->wdev.mtx) 1015 { 1016 mutex_lock(&sdata->wdev.mtx); 1017 __acquire(&sdata->wdev.mtx); 1018 } 1019 1020 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1021 __releases(&sdata->wdev.mtx) 1022 { 1023 mutex_unlock(&sdata->wdev.mtx); 1024 __release(&sdata->wdev.mtx); 1025 } 1026 1027 #define sdata_dereference(p, sdata) \ 1028 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1029 1030 static inline void 1031 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1032 { 1033 lockdep_assert_held(&sdata->wdev.mtx); 1034 } 1035 1036 static inline int 1037 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1038 { 1039 switch (chandef->width) { 1040 case NL80211_CHAN_WIDTH_5: 1041 return 2; 1042 case NL80211_CHAN_WIDTH_10: 1043 return 1; 1044 default: 1045 return 0; 1046 } 1047 } 1048 1049 static inline int 1050 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1051 { 1052 struct ieee80211_chanctx_conf *chanctx_conf; 1053 int shift = 0; 1054 1055 rcu_read_lock(); 1056 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1057 if (chanctx_conf) 1058 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1059 rcu_read_unlock(); 1060 1061 return shift; 1062 } 1063 1064 enum { 1065 IEEE80211_RX_MSG = 1, 1066 IEEE80211_TX_STATUS_MSG = 2, 1067 }; 1068 1069 enum queue_stop_reason { 1070 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1071 IEEE80211_QUEUE_STOP_REASON_PS, 1072 IEEE80211_QUEUE_STOP_REASON_CSA, 1073 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1074 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1075 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1076 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1077 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1078 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1079 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1080 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1081 1082 IEEE80211_QUEUE_STOP_REASONS, 1083 }; 1084 1085 #ifdef CONFIG_MAC80211_LEDS 1086 struct tpt_led_trigger { 1087 char name[32]; 1088 const struct ieee80211_tpt_blink *blink_table; 1089 unsigned int blink_table_len; 1090 struct timer_list timer; 1091 struct ieee80211_local *local; 1092 unsigned long prev_traffic; 1093 unsigned long tx_bytes, rx_bytes; 1094 unsigned int active, want; 1095 bool running; 1096 }; 1097 #endif 1098 1099 /** 1100 * mac80211 scan flags - currently active scan mode 1101 * 1102 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1103 * well be on the operating channel 1104 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1105 * determine if we are on the operating channel or not 1106 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1107 * channel. This should not interrupt normal traffic. 1108 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1109 * that the scan completed. 1110 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1111 * a scan complete for an aborted scan. 1112 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1113 * cancelled. 1114 */ 1115 enum { 1116 SCAN_SW_SCANNING, 1117 SCAN_HW_SCANNING, 1118 SCAN_ONCHANNEL_SCANNING, 1119 SCAN_COMPLETED, 1120 SCAN_ABORTED, 1121 SCAN_HW_CANCELLED, 1122 }; 1123 1124 /** 1125 * enum mac80211_scan_state - scan state machine states 1126 * 1127 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1128 * determines if we should keep on scanning or switch back to the 1129 * operating channel 1130 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1131 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1132 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1133 * send out data 1134 * @SCAN_RESUME: Resume the scan and scan the next channel 1135 * @SCAN_ABORT: Abort the scan and go back to operating channel 1136 */ 1137 enum mac80211_scan_state { 1138 SCAN_DECISION, 1139 SCAN_SET_CHANNEL, 1140 SCAN_SEND_PROBE, 1141 SCAN_SUSPEND, 1142 SCAN_RESUME, 1143 SCAN_ABORT, 1144 }; 1145 1146 DECLARE_STATIC_KEY_FALSE(aql_disable); 1147 1148 struct ieee80211_local { 1149 /* embed the driver visible part. 1150 * don't cast (use the static inlines below), but we keep 1151 * it first anyway so they become a no-op */ 1152 struct ieee80211_hw hw; 1153 1154 struct fq fq; 1155 struct codel_vars *cvars; 1156 struct codel_params cparams; 1157 1158 /* protects active_txqs and txqi->schedule_order */ 1159 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1160 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1161 u16 schedule_round[IEEE80211_NUM_ACS]; 1162 1163 u16 airtime_flags; 1164 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1165 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1166 u32 aql_threshold; 1167 atomic_t aql_total_pending_airtime; 1168 1169 const struct ieee80211_ops *ops; 1170 1171 /* 1172 * private workqueue to mac80211. mac80211 makes this accessible 1173 * via ieee80211_queue_work() 1174 */ 1175 struct workqueue_struct *workqueue; 1176 1177 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1178 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1179 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1180 spinlock_t queue_stop_reason_lock; 1181 1182 int open_count; 1183 int monitors, cooked_mntrs; 1184 /* number of interfaces with corresponding FIF_ flags */ 1185 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1186 fif_probe_req; 1187 bool probe_req_reg; 1188 bool rx_mcast_action_reg; 1189 unsigned int filter_flags; /* FIF_* */ 1190 1191 bool wiphy_ciphers_allocated; 1192 1193 bool use_chanctx; 1194 1195 /* protects the aggregated multicast list and filter calls */ 1196 spinlock_t filter_lock; 1197 1198 /* used for uploading changed mc list */ 1199 struct work_struct reconfig_filter; 1200 1201 /* aggregated multicast list */ 1202 struct netdev_hw_addr_list mc_list; 1203 1204 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1205 1206 /* 1207 * suspended is true if we finished all the suspend _and_ we have 1208 * not yet come up from resume. This is to be used by mac80211 1209 * to ensure driver sanity during suspend and mac80211's own 1210 * sanity. It can eventually be used for WoW as well. 1211 */ 1212 bool suspended; 1213 1214 /* 1215 * Resuming is true while suspended, but when we're reprogramming the 1216 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1217 * again even though some other parts of the stack are still suspended 1218 * and we still drop received frames to avoid waking the stack. 1219 */ 1220 bool resuming; 1221 1222 /* 1223 * quiescing is true during the suspend process _only_ to 1224 * ease timer cancelling etc. 1225 */ 1226 bool quiescing; 1227 1228 /* device is started */ 1229 bool started; 1230 1231 /* device is during a HW reconfig */ 1232 bool in_reconfig; 1233 1234 /* wowlan is enabled -- don't reconfig on resume */ 1235 bool wowlan; 1236 1237 struct work_struct radar_detected_work; 1238 1239 /* number of RX chains the hardware has */ 1240 u8 rx_chains; 1241 1242 /* bitmap of which sbands were copied */ 1243 u8 sband_allocated; 1244 1245 int tx_headroom; /* required headroom for hardware/radiotap */ 1246 1247 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1248 * added to skb_queue will be processed, but frames in 1249 * skb_queue_unreliable may be dropped if the total length of these 1250 * queues increases over the limit. */ 1251 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1252 struct tasklet_struct tasklet; 1253 struct sk_buff_head skb_queue; 1254 struct sk_buff_head skb_queue_unreliable; 1255 1256 spinlock_t rx_path_lock; 1257 1258 /* Station data */ 1259 /* 1260 * The mutex only protects the list, hash table and 1261 * counter, reads are done with RCU. 1262 */ 1263 struct mutex sta_mtx; 1264 spinlock_t tim_lock; 1265 unsigned long num_sta; 1266 struct list_head sta_list; 1267 struct rhltable sta_hash; 1268 struct timer_list sta_cleanup; 1269 int sta_generation; 1270 1271 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1272 struct tasklet_struct tx_pending_tasklet; 1273 struct tasklet_struct wake_txqs_tasklet; 1274 1275 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1276 1277 /* number of interfaces with allmulti RX */ 1278 atomic_t iff_allmultis; 1279 1280 struct rate_control_ref *rate_ctrl; 1281 1282 struct arc4_ctx wep_tx_ctx; 1283 struct arc4_ctx wep_rx_ctx; 1284 u32 wep_iv; 1285 1286 /* see iface.c */ 1287 struct list_head interfaces; 1288 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1289 struct mutex iflist_mtx; 1290 1291 /* 1292 * Key mutex, protects sdata's key_list and sta_info's 1293 * key pointers and ptk_idx (write access, they're RCU.) 1294 */ 1295 struct mutex key_mtx; 1296 1297 /* mutex for scan and work locking */ 1298 struct mutex mtx; 1299 1300 /* Scanning and BSS list */ 1301 unsigned long scanning; 1302 struct cfg80211_ssid scan_ssid; 1303 struct cfg80211_scan_request *int_scan_req; 1304 struct cfg80211_scan_request __rcu *scan_req; 1305 struct ieee80211_scan_request *hw_scan_req; 1306 struct cfg80211_chan_def scan_chandef; 1307 enum nl80211_band hw_scan_band; 1308 int scan_channel_idx; 1309 int scan_ies_len; 1310 int hw_scan_ies_bufsize; 1311 struct cfg80211_scan_info scan_info; 1312 1313 struct work_struct sched_scan_stopped_work; 1314 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1315 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1316 u8 scan_addr[ETH_ALEN]; 1317 1318 unsigned long leave_oper_channel_time; 1319 enum mac80211_scan_state next_scan_state; 1320 struct delayed_work scan_work; 1321 struct ieee80211_sub_if_data __rcu *scan_sdata; 1322 /* For backward compatibility only -- do not use */ 1323 struct cfg80211_chan_def _oper_chandef; 1324 1325 /* Temporary remain-on-channel for off-channel operations */ 1326 struct ieee80211_channel *tmp_channel; 1327 1328 /* channel contexts */ 1329 struct list_head chanctx_list; 1330 struct mutex chanctx_mtx; 1331 1332 #ifdef CONFIG_MAC80211_LEDS 1333 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1334 struct led_trigger tpt_led; 1335 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1336 atomic_t radio_led_active, tpt_led_active; 1337 struct tpt_led_trigger *tpt_led_trigger; 1338 #endif 1339 1340 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1341 /* SNMP counters */ 1342 /* dot11CountersTable */ 1343 u32 dot11TransmittedFragmentCount; 1344 u32 dot11MulticastTransmittedFrameCount; 1345 u32 dot11FailedCount; 1346 u32 dot11RetryCount; 1347 u32 dot11MultipleRetryCount; 1348 u32 dot11FrameDuplicateCount; 1349 u32 dot11ReceivedFragmentCount; 1350 u32 dot11MulticastReceivedFrameCount; 1351 u32 dot11TransmittedFrameCount; 1352 1353 /* TX/RX handler statistics */ 1354 unsigned int tx_handlers_drop; 1355 unsigned int tx_handlers_queued; 1356 unsigned int tx_handlers_drop_wep; 1357 unsigned int tx_handlers_drop_not_assoc; 1358 unsigned int tx_handlers_drop_unauth_port; 1359 unsigned int rx_handlers_drop; 1360 unsigned int rx_handlers_queued; 1361 unsigned int rx_handlers_drop_nullfunc; 1362 unsigned int rx_handlers_drop_defrag; 1363 unsigned int tx_expand_skb_head; 1364 unsigned int tx_expand_skb_head_cloned; 1365 unsigned int rx_expand_skb_head_defrag; 1366 unsigned int rx_handlers_fragments; 1367 unsigned int tx_status_drop; 1368 #define I802_DEBUG_INC(c) (c)++ 1369 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1370 #define I802_DEBUG_INC(c) do { } while (0) 1371 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1372 1373 1374 int total_ps_buffered; /* total number of all buffered unicast and 1375 * multicast packets for power saving stations 1376 */ 1377 1378 bool pspolling; 1379 /* 1380 * PS can only be enabled when we have exactly one managed 1381 * interface (and monitors) in PS, this then points there. 1382 */ 1383 struct ieee80211_sub_if_data *ps_sdata; 1384 struct work_struct dynamic_ps_enable_work; 1385 struct work_struct dynamic_ps_disable_work; 1386 struct timer_list dynamic_ps_timer; 1387 struct notifier_block ifa_notifier; 1388 struct notifier_block ifa6_notifier; 1389 1390 /* 1391 * The dynamic ps timeout configured from user space via WEXT - 1392 * this will override whatever chosen by mac80211 internally. 1393 */ 1394 int dynamic_ps_forced_timeout; 1395 1396 int user_power_level; /* in dBm, for all interfaces */ 1397 1398 enum ieee80211_smps_mode smps_mode; 1399 1400 struct work_struct restart_work; 1401 1402 #ifdef CONFIG_MAC80211_DEBUGFS 1403 struct local_debugfsdentries { 1404 struct dentry *rcdir; 1405 struct dentry *keys; 1406 } debugfs; 1407 bool force_tx_status; 1408 #endif 1409 1410 /* 1411 * Remain-on-channel support 1412 */ 1413 struct delayed_work roc_work; 1414 struct list_head roc_list; 1415 struct work_struct hw_roc_start, hw_roc_done; 1416 unsigned long hw_roc_start_time; 1417 u64 roc_cookie_counter; 1418 1419 struct idr ack_status_frames; 1420 spinlock_t ack_status_lock; 1421 1422 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1423 1424 /* virtual monitor interface */ 1425 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1426 struct cfg80211_chan_def monitor_chandef; 1427 1428 /* extended capabilities provided by mac80211 */ 1429 u8 ext_capa[8]; 1430 1431 /* TDLS channel switch */ 1432 struct work_struct tdls_chsw_work; 1433 struct sk_buff_head skb_queue_tdls_chsw; 1434 }; 1435 1436 static inline struct ieee80211_sub_if_data * 1437 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1438 { 1439 return netdev_priv(dev); 1440 } 1441 1442 static inline struct ieee80211_sub_if_data * 1443 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1444 { 1445 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1446 } 1447 1448 static inline struct ieee80211_supported_band * 1449 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1450 { 1451 struct ieee80211_local *local = sdata->local; 1452 struct ieee80211_chanctx_conf *chanctx_conf; 1453 enum nl80211_band band; 1454 1455 rcu_read_lock(); 1456 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1457 1458 if (WARN_ON_ONCE(!chanctx_conf)) { 1459 rcu_read_unlock(); 1460 return NULL; 1461 } 1462 1463 band = chanctx_conf->def.chan->band; 1464 rcu_read_unlock(); 1465 1466 return local->hw.wiphy->bands[band]; 1467 } 1468 1469 /* this struct holds the value parsing from channel switch IE */ 1470 struct ieee80211_csa_ie { 1471 struct cfg80211_chan_def chandef; 1472 u8 mode; 1473 u8 count; 1474 u8 ttl; 1475 u16 pre_value; 1476 u16 reason_code; 1477 u32 max_switch_time; 1478 }; 1479 1480 /* Parsed Information Elements */ 1481 struct ieee802_11_elems { 1482 const u8 *ie_start; 1483 size_t total_len; 1484 1485 /* pointers to IEs */ 1486 const struct ieee80211_tdls_lnkie *lnk_id; 1487 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1488 const u8 *ext_capab; 1489 const u8 *ssid; 1490 const u8 *supp_rates; 1491 const u8 *ds_params; 1492 const struct ieee80211_tim_ie *tim; 1493 const u8 *challenge; 1494 const u8 *rsn; 1495 const u8 *rsnx; 1496 const u8 *erp_info; 1497 const u8 *ext_supp_rates; 1498 const u8 *wmm_info; 1499 const u8 *wmm_param; 1500 const struct ieee80211_ht_cap *ht_cap_elem; 1501 const struct ieee80211_ht_operation *ht_operation; 1502 const struct ieee80211_vht_cap *vht_cap_elem; 1503 const struct ieee80211_vht_operation *vht_operation; 1504 const struct ieee80211_meshconf_ie *mesh_config; 1505 const u8 *he_cap; 1506 const struct ieee80211_he_operation *he_operation; 1507 const struct ieee80211_he_spr *he_spr; 1508 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1509 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1510 const u8 *uora_element; 1511 const u8 *mesh_id; 1512 const u8 *peering; 1513 const __le16 *awake_window; 1514 const u8 *preq; 1515 const u8 *prep; 1516 const u8 *perr; 1517 const struct ieee80211_rann_ie *rann; 1518 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1519 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1520 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1521 const u8 *max_channel_switch_time; 1522 const u8 *country_elem; 1523 const u8 *pwr_constr_elem; 1524 const u8 *cisco_dtpc_elem; 1525 const struct ieee80211_timeout_interval_ie *timeout_int; 1526 const u8 *opmode_notif; 1527 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1528 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1529 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1530 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1531 const struct ieee80211_bssid_index *bssid_index; 1532 u8 max_bssid_indicator; 1533 u8 dtim_count; 1534 u8 dtim_period; 1535 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1536 const struct ieee80211_s1g_cap *s1g_capab; 1537 const struct ieee80211_s1g_oper_ie *s1g_oper; 1538 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1539 const struct ieee80211_aid_response_ie *aid_resp; 1540 1541 /* length of them, respectively */ 1542 u8 ext_capab_len; 1543 u8 ssid_len; 1544 u8 supp_rates_len; 1545 u8 tim_len; 1546 u8 challenge_len; 1547 u8 rsn_len; 1548 u8 rsnx_len; 1549 u8 ext_supp_rates_len; 1550 u8 wmm_info_len; 1551 u8 wmm_param_len; 1552 u8 he_cap_len; 1553 u8 mesh_id_len; 1554 u8 peering_len; 1555 u8 preq_len; 1556 u8 prep_len; 1557 u8 perr_len; 1558 u8 country_elem_len; 1559 u8 bssid_index_len; 1560 1561 /* whether a parse error occurred while retrieving these elements */ 1562 bool parse_error; 1563 }; 1564 1565 static inline struct ieee80211_local *hw_to_local( 1566 struct ieee80211_hw *hw) 1567 { 1568 return container_of(hw, struct ieee80211_local, hw); 1569 } 1570 1571 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1572 { 1573 return container_of(txq, struct txq_info, txq); 1574 } 1575 1576 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1577 { 1578 struct txq_info *txqi = to_txq_info(txq); 1579 1580 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1581 } 1582 1583 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1584 { 1585 return ether_addr_equal(raddr, addr) || 1586 is_broadcast_ether_addr(raddr); 1587 } 1588 1589 static inline bool 1590 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1591 { 1592 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1593 status->flag & RX_FLAG_MACTIME_END); 1594 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1595 RX_FLAG_MACTIME_PLCP_START)); 1596 } 1597 1598 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1599 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1600 1601 /* This function returns the number of multicast stations connected to this 1602 * interface. It returns -1 if that number is not tracked, that is for netdevs 1603 * not in AP or AP_VLAN mode or when using 4addr. 1604 */ 1605 static inline int 1606 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1607 { 1608 if (sdata->vif.type == NL80211_IFTYPE_AP) 1609 return atomic_read(&sdata->u.ap.num_mcast_sta); 1610 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1611 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1612 return -1; 1613 } 1614 1615 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1616 struct ieee80211_rx_status *status, 1617 unsigned int mpdu_len, 1618 unsigned int mpdu_offset); 1619 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1620 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1621 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1622 u32 changed); 1623 void ieee80211_configure_filter(struct ieee80211_local *local); 1624 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1625 1626 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1627 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1628 u64 *cookie, gfp_t gfp); 1629 1630 void ieee80211_check_fast_rx(struct sta_info *sta); 1631 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1632 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1633 void ieee80211_clear_fast_rx(struct sta_info *sta); 1634 1635 /* STA code */ 1636 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1637 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1638 struct cfg80211_auth_request *req); 1639 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1640 struct cfg80211_assoc_request *req); 1641 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1642 struct cfg80211_deauth_request *req); 1643 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1644 struct cfg80211_disassoc_request *req); 1645 void ieee80211_send_pspoll(struct ieee80211_local *local, 1646 struct ieee80211_sub_if_data *sdata); 1647 void ieee80211_recalc_ps(struct ieee80211_local *local); 1648 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1649 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1650 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1651 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1652 struct sk_buff *skb); 1653 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1654 struct sk_buff *skb); 1655 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1656 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1657 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1658 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1659 __le16 fc, bool acked); 1660 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1661 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1662 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1663 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1664 u8 *bssid, u8 reason, bool tx); 1665 1666 /* IBSS code */ 1667 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1668 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1669 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1670 const u8 *bssid, const u8 *addr, u32 supp_rates); 1671 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1672 struct cfg80211_ibss_params *params); 1673 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1674 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1675 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1676 struct sk_buff *skb); 1677 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1678 struct cfg80211_csa_settings *csa_settings); 1679 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1680 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1681 1682 /* OCB code */ 1683 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1684 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1685 const u8 *bssid, const u8 *addr, u32 supp_rates); 1686 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1687 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1688 struct ocb_setup *setup); 1689 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1690 1691 /* mesh code */ 1692 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1693 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1694 struct sk_buff *skb); 1695 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1696 struct cfg80211_csa_settings *csa_settings); 1697 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1698 1699 /* scan/BSS handling */ 1700 void ieee80211_scan_work(struct work_struct *work); 1701 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1702 const u8 *ssid, u8 ssid_len, 1703 struct ieee80211_channel **channels, 1704 unsigned int n_channels, 1705 enum nl80211_bss_scan_width scan_width); 1706 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1707 struct cfg80211_scan_request *req); 1708 void ieee80211_scan_cancel(struct ieee80211_local *local); 1709 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1710 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1711 1712 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1713 struct ieee80211_bss * 1714 ieee80211_bss_info_update(struct ieee80211_local *local, 1715 struct ieee80211_rx_status *rx_status, 1716 struct ieee80211_mgmt *mgmt, 1717 size_t len, 1718 struct ieee80211_channel *channel); 1719 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1720 struct ieee80211_bss *bss); 1721 1722 /* scheduled scan handling */ 1723 int 1724 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1725 struct cfg80211_sched_scan_request *req); 1726 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1727 struct cfg80211_sched_scan_request *req); 1728 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1729 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1730 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1731 1732 /* off-channel/mgmt-tx */ 1733 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1734 void ieee80211_offchannel_return(struct ieee80211_local *local); 1735 void ieee80211_roc_setup(struct ieee80211_local *local); 1736 void ieee80211_start_next_roc(struct ieee80211_local *local); 1737 void ieee80211_roc_purge(struct ieee80211_local *local, 1738 struct ieee80211_sub_if_data *sdata); 1739 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1740 struct ieee80211_channel *chan, 1741 unsigned int duration, u64 *cookie); 1742 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1743 struct wireless_dev *wdev, u64 cookie); 1744 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1745 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1746 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1747 struct wireless_dev *wdev, u64 cookie); 1748 1749 /* channel switch handling */ 1750 void ieee80211_csa_finalize_work(struct work_struct *work); 1751 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1752 struct cfg80211_csa_settings *params); 1753 1754 /* interface handling */ 1755 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1756 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1757 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1758 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1759 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1760 MAC80211_SUPPORTED_FEATURES_RX) 1761 1762 int ieee80211_iface_init(void); 1763 void ieee80211_iface_exit(void); 1764 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1765 unsigned char name_assign_type, 1766 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1767 struct vif_params *params); 1768 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1769 enum nl80211_iftype type); 1770 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1771 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1772 u32 ieee80211_idle_off(struct ieee80211_local *local); 1773 void ieee80211_recalc_idle(struct ieee80211_local *local); 1774 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1775 const int offset); 1776 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1777 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1778 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1779 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1780 1781 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1782 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1783 bool update_bss); 1784 void ieee80211_recalc_offload(struct ieee80211_local *local); 1785 1786 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1787 { 1788 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1789 } 1790 1791 /* tx handling */ 1792 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1793 void ieee80211_tx_pending(struct tasklet_struct *t); 1794 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1795 struct net_device *dev); 1796 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1797 struct net_device *dev); 1798 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1799 struct net_device *dev); 1800 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1801 struct net_device *dev, 1802 u32 info_flags, 1803 u32 ctrl_flags, 1804 u64 *cookie); 1805 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1806 struct sk_buff_head *skbs); 1807 struct sk_buff * 1808 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1809 struct sk_buff *skb, u32 info_flags); 1810 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1811 struct ieee80211_supported_band *sband, 1812 int retry_count, int shift, bool send_to_cooked, 1813 struct ieee80211_tx_status *status); 1814 1815 void ieee80211_check_fast_xmit(struct sta_info *sta); 1816 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1817 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1818 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1819 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1820 const u8 *buf, size_t len, 1821 const u8 *dest, __be16 proto, bool unencrypted, 1822 u64 *cookie); 1823 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1824 const u8 *buf, size_t len); 1825 1826 /* HT */ 1827 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1828 struct ieee80211_sta_ht_cap *ht_cap); 1829 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1830 struct ieee80211_supported_band *sband, 1831 const struct ieee80211_ht_cap *ht_cap_ie, 1832 struct sta_info *sta); 1833 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1834 const u8 *da, u16 tid, 1835 u16 initiator, u16 reason_code); 1836 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1837 enum ieee80211_smps_mode smps, const u8 *da, 1838 const u8 *bssid); 1839 void ieee80211_request_smps_ap_work(struct work_struct *work); 1840 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1841 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1842 enum ieee80211_smps_mode smps_mode_new); 1843 1844 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1845 u16 initiator, u16 reason, bool stop); 1846 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1847 u16 initiator, u16 reason, bool stop); 1848 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1849 u8 dialog_token, u16 timeout, 1850 u16 start_seq_num, u16 ba_policy, u16 tid, 1851 u16 buf_size, bool tx, bool auto_seq, 1852 const struct ieee80211_addba_ext_ie *addbaext); 1853 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1854 enum ieee80211_agg_stop_reason reason); 1855 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1856 struct sta_info *sta, 1857 struct ieee80211_mgmt *mgmt, size_t len); 1858 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1859 struct sta_info *sta, 1860 struct ieee80211_mgmt *mgmt, 1861 size_t len); 1862 void ieee80211_process_addba_request(struct ieee80211_local *local, 1863 struct sta_info *sta, 1864 struct ieee80211_mgmt *mgmt, 1865 size_t len); 1866 1867 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1868 enum ieee80211_agg_stop_reason reason); 1869 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1870 enum ieee80211_agg_stop_reason reason); 1871 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1872 struct tid_ampdu_tx *tid_tx); 1873 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1874 struct tid_ampdu_tx *tid_tx); 1875 void ieee80211_ba_session_work(struct work_struct *work); 1876 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1877 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1878 1879 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1880 enum nl80211_smps_mode 1881 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1882 1883 /* VHT */ 1884 void 1885 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1886 struct ieee80211_supported_band *sband, 1887 const struct ieee80211_vht_cap *vht_cap_ie, 1888 struct sta_info *sta); 1889 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1890 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1891 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1892 enum ieee80211_sta_rx_bandwidth 1893 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1894 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1895 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1896 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1897 struct ieee80211_mgmt *mgmt); 1898 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1899 struct sta_info *sta, u8 opmode, 1900 enum nl80211_band band); 1901 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1902 struct sta_info *sta, u8 opmode, 1903 enum nl80211_band band); 1904 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1905 struct ieee80211_sta_vht_cap *vht_cap); 1906 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1907 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1908 enum nl80211_chan_width 1909 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1910 1911 /* HE */ 1912 void 1913 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1914 struct ieee80211_supported_band *sband, 1915 const u8 *he_cap_ie, u8 he_cap_len, 1916 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 1917 struct sta_info *sta); 1918 void 1919 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 1920 const struct ieee80211_he_spr *he_spr_ie_elem); 1921 1922 void 1923 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 1924 const struct ieee80211_he_operation *he_op_ie_elem); 1925 1926 /* S1G */ 1927 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 1928 1929 /* Spectrum management */ 1930 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1931 struct ieee80211_mgmt *mgmt, 1932 size_t len); 1933 /** 1934 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1935 * @sdata: the sdata of the interface which has received the frame 1936 * @elems: parsed 802.11 elements received with the frame 1937 * @current_band: indicates the current band 1938 * @vht_cap_info: VHT capabilities of the transmitter 1939 * @sta_flags: contains information about own capabilities and restrictions 1940 * to decide which channel switch announcements can be accepted. Only the 1941 * following subset of &enum ieee80211_sta_flags are evaluated: 1942 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1943 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1944 * %IEEE80211_STA_DISABLE_160MHZ. 1945 * @bssid: the currently connected bssid (for reporting) 1946 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1947 All of them will be filled with if success only. 1948 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1949 */ 1950 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1951 struct ieee802_11_elems *elems, 1952 enum nl80211_band current_band, 1953 u32 vht_cap_info, 1954 u32 sta_flags, u8 *bssid, 1955 struct ieee80211_csa_ie *csa_ie); 1956 1957 /* Suspend/resume and hw reconfiguration */ 1958 int ieee80211_reconfig(struct ieee80211_local *local); 1959 void ieee80211_stop_device(struct ieee80211_local *local); 1960 1961 int __ieee80211_suspend(struct ieee80211_hw *hw, 1962 struct cfg80211_wowlan *wowlan); 1963 1964 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1965 { 1966 struct ieee80211_local *local = hw_to_local(hw); 1967 1968 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1969 !test_bit(SCAN_COMPLETED, &local->scanning), 1970 "%s: resume with hardware scan still in progress\n", 1971 wiphy_name(hw->wiphy)); 1972 1973 return ieee80211_reconfig(hw_to_local(hw)); 1974 } 1975 1976 /* utility functions/constants */ 1977 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1978 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1979 int rate, int erp, int short_preamble, 1980 int shift); 1981 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1982 struct ieee80211_tx_queue_params *qparam, 1983 int ac); 1984 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1985 bool bss_notify, bool enable_qos); 1986 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1987 struct sta_info *sta, struct sk_buff *skb); 1988 1989 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1990 struct sk_buff *skb, int tid, 1991 enum nl80211_band band); 1992 1993 /* sta_out needs to be checked for ERR_PTR() before using */ 1994 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 1995 struct sk_buff *skb, 1996 struct sta_info **sta_out); 1997 1998 static inline void 1999 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2000 struct sk_buff *skb, int tid, 2001 enum nl80211_band band) 2002 { 2003 rcu_read_lock(); 2004 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 2005 rcu_read_unlock(); 2006 } 2007 2008 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2009 struct sk_buff *skb, int tid) 2010 { 2011 struct ieee80211_chanctx_conf *chanctx_conf; 2012 2013 rcu_read_lock(); 2014 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2015 if (WARN_ON(!chanctx_conf)) { 2016 rcu_read_unlock(); 2017 kfree_skb(skb); 2018 return; 2019 } 2020 2021 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2022 chanctx_conf->def.chan->band); 2023 rcu_read_unlock(); 2024 } 2025 2026 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2027 struct sk_buff *skb) 2028 { 2029 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2030 ieee80211_tx_skb_tid(sdata, skb, 7); 2031 } 2032 2033 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2034 struct ieee802_11_elems *elems, 2035 u64 filter, u32 crc, u8 *transmitter_bssid, 2036 u8 *bss_bssid); 2037 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 2038 bool action, 2039 struct ieee802_11_elems *elems, 2040 u8 *transmitter_bssid, 2041 u8 *bss_bssid) 2042 { 2043 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 2044 transmitter_bssid, bss_bssid); 2045 } 2046 2047 2048 extern const int ieee802_1d_to_ac[8]; 2049 2050 static inline int ieee80211_ac_from_tid(int tid) 2051 { 2052 return ieee802_1d_to_ac[tid & 7]; 2053 } 2054 2055 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2056 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2057 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2058 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2059 struct ieee80211_sub_if_data *sdata, 2060 bool powersave); 2061 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2062 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2063 2064 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2065 unsigned long queues, 2066 enum queue_stop_reason reason, 2067 bool refcounted); 2068 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2069 struct ieee80211_sub_if_data *sdata, 2070 enum queue_stop_reason reason); 2071 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2072 struct ieee80211_sub_if_data *sdata, 2073 enum queue_stop_reason reason); 2074 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2075 unsigned long queues, 2076 enum queue_stop_reason reason, 2077 bool refcounted); 2078 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2079 enum queue_stop_reason reason, 2080 bool refcounted); 2081 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2082 enum queue_stop_reason reason, 2083 bool refcounted); 2084 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2085 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2086 struct sk_buff *skb); 2087 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2088 struct sk_buff_head *skbs); 2089 void ieee80211_flush_queues(struct ieee80211_local *local, 2090 struct ieee80211_sub_if_data *sdata, bool drop); 2091 void __ieee80211_flush_queues(struct ieee80211_local *local, 2092 struct ieee80211_sub_if_data *sdata, 2093 unsigned int queues, bool drop); 2094 2095 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2096 { 2097 /* 2098 * It's unsafe to try to do any work during reconfigure flow. 2099 * When the flow ends the work will be requeued. 2100 */ 2101 if (local->in_reconfig) 2102 return false; 2103 2104 /* 2105 * If quiescing is set, we are racing with __ieee80211_suspend. 2106 * __ieee80211_suspend flushes the workers after setting quiescing, 2107 * and we check quiescing / suspended before enqueing new workers. 2108 * We should abort the worker to avoid the races below. 2109 */ 2110 if (local->quiescing) 2111 return false; 2112 2113 /* 2114 * We might already be suspended if the following scenario occurs: 2115 * __ieee80211_suspend Control path 2116 * 2117 * if (local->quiescing) 2118 * return; 2119 * local->quiescing = true; 2120 * flush_workqueue(); 2121 * queue_work(...); 2122 * local->suspended = true; 2123 * local->quiescing = false; 2124 * worker starts running... 2125 */ 2126 if (local->suspended) 2127 return false; 2128 2129 return true; 2130 } 2131 2132 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2133 void ieee80211_txq_set_params(struct ieee80211_local *local); 2134 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2135 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2136 struct sta_info *sta, 2137 struct txq_info *txq, int tid); 2138 void ieee80211_txq_purge(struct ieee80211_local *local, 2139 struct txq_info *txqi); 2140 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2141 struct ieee80211_sub_if_data *sdata); 2142 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2143 struct txq_info *txqi); 2144 void ieee80211_wake_txqs(struct tasklet_struct *t); 2145 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2146 u16 transaction, u16 auth_alg, u16 status, 2147 const u8 *extra, size_t extra_len, const u8 *bssid, 2148 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2149 u32 tx_flags); 2150 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2151 const u8 *da, const u8 *bssid, 2152 u16 stype, u16 reason, 2153 bool send_frame, u8 *frame_buf); 2154 2155 enum { 2156 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2157 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2158 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2159 }; 2160 2161 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2162 size_t buffer_len, 2163 struct ieee80211_scan_ies *ie_desc, 2164 const u8 *ie, size_t ie_len, 2165 u8 bands_used, u32 *rate_masks, 2166 struct cfg80211_chan_def *chandef, 2167 u32 flags); 2168 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2169 const u8 *src, const u8 *dst, 2170 u32 ratemask, 2171 struct ieee80211_channel *chan, 2172 const u8 *ssid, size_t ssid_len, 2173 const u8 *ie, size_t ie_len, 2174 u32 flags); 2175 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2176 struct ieee802_11_elems *elems, 2177 enum nl80211_band band, u32 *basic_rates); 2178 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2179 enum ieee80211_smps_mode smps_mode); 2180 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2181 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2182 2183 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2184 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2185 u16 cap); 2186 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2187 const struct cfg80211_chan_def *chandef, 2188 u16 prot_mode, bool rifs_mode); 2189 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2190 const struct cfg80211_chan_def *chandef); 2191 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2192 u32 cap); 2193 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2194 const struct cfg80211_chan_def *chandef); 2195 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2196 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2197 const struct ieee80211_sta_he_cap *he_cap, 2198 u8 *end); 2199 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2200 struct sk_buff *skb); 2201 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2202 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2203 const struct ieee80211_supported_band *sband, 2204 const u8 *srates, int srates_len, u32 *rates); 2205 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2206 struct sk_buff *skb, bool need_basic, 2207 enum nl80211_band band); 2208 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2209 struct sk_buff *skb, bool need_basic, 2210 enum nl80211_band band); 2211 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2212 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2213 struct ieee80211_sta_s1g_cap *caps, 2214 struct sk_buff *skb); 2215 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2216 struct sk_buff *skb); 2217 2218 /* channel management */ 2219 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2220 struct cfg80211_chan_def *chandef); 2221 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2222 const struct ieee80211_vht_operation *oper, 2223 const struct ieee80211_ht_operation *htop, 2224 struct cfg80211_chan_def *chandef); 2225 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2226 const struct ieee80211_he_operation *he_oper, 2227 struct cfg80211_chan_def *chandef); 2228 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2229 struct cfg80211_chan_def *chandef); 2230 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2231 2232 int __must_check 2233 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2234 const struct cfg80211_chan_def *chandef, 2235 enum ieee80211_chanctx_mode mode); 2236 int __must_check 2237 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2238 const struct cfg80211_chan_def *chandef, 2239 enum ieee80211_chanctx_mode mode, 2240 bool radar_required); 2241 int __must_check 2242 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2243 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2244 2245 int __must_check 2246 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2247 const struct cfg80211_chan_def *chandef, 2248 u32 *changed); 2249 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2250 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2251 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2252 bool clear); 2253 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2254 struct ieee80211_chanctx *ctx); 2255 2256 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2257 struct ieee80211_chanctx *chanctx); 2258 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2259 struct ieee80211_chanctx *ctx); 2260 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2261 2262 void ieee80211_dfs_cac_timer(unsigned long data); 2263 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2264 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2265 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2266 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2267 struct cfg80211_csa_settings *csa_settings); 2268 2269 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2270 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2271 const struct ieee80211_cipher_scheme * 2272 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2273 enum nl80211_iftype iftype); 2274 int ieee80211_cs_headroom(struct ieee80211_local *local, 2275 struct cfg80211_crypto_settings *crypto, 2276 enum nl80211_iftype iftype); 2277 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2278 struct ieee80211_sub_if_data *sdata); 2279 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2280 const struct cfg80211_chan_def *chandef, 2281 enum ieee80211_chanctx_mode chanmode, 2282 u8 radar_detect); 2283 int ieee80211_max_num_channels(struct ieee80211_local *local); 2284 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2285 struct ieee80211_chanctx *ctx); 2286 2287 /* TDLS */ 2288 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2289 const u8 *peer, u8 action_code, u8 dialog_token, 2290 u16 status_code, u32 peer_capability, 2291 bool initiator, const u8 *extra_ies, 2292 size_t extra_ies_len); 2293 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2294 const u8 *peer, enum nl80211_tdls_operation oper); 2295 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2296 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2297 const u8 *addr, u8 oper_class, 2298 struct cfg80211_chan_def *chandef); 2299 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2300 struct net_device *dev, 2301 const u8 *addr); 2302 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2303 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2304 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2305 const u8 *peer, u16 reason); 2306 const char *ieee80211_get_reason_code_string(u16 reason_code); 2307 u16 ieee80211_encode_usf(int val); 2308 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2309 enum nl80211_iftype type); 2310 2311 extern const struct ethtool_ops ieee80211_ethtool_ops; 2312 2313 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2314 struct ieee80211_vif *vif, 2315 struct ieee80211_sta *pubsta, 2316 int len, bool ampdu); 2317 #ifdef CONFIG_MAC80211_NOINLINE 2318 #define debug_noinline noinline 2319 #else 2320 #define debug_noinline 2321 #endif 2322 2323 #endif /* IEEE80211_I_H */ 2324