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_wds { 315 struct sta_info *sta; 316 u8 remote_addr[ETH_ALEN]; 317 }; 318 319 struct ieee80211_if_vlan { 320 struct list_head list; /* write-protected with RTNL and local->mtx */ 321 322 /* used for all tx if the VLAN is configured to 4-addr mode */ 323 struct sta_info __rcu *sta; 324 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 325 }; 326 327 struct mesh_stats { 328 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 329 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 330 __u32 fwded_frames; /* Mesh total forwarded frames */ 331 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 332 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 333 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 334 }; 335 336 #define PREQ_Q_F_START 0x1 337 #define PREQ_Q_F_REFRESH 0x2 338 struct mesh_preq_queue { 339 struct list_head list; 340 u8 dst[ETH_ALEN]; 341 u8 flags; 342 }; 343 344 struct ieee80211_roc_work { 345 struct list_head list; 346 347 struct ieee80211_sub_if_data *sdata; 348 349 struct ieee80211_channel *chan; 350 351 bool started, abort, hw_begun, notified; 352 bool on_channel; 353 354 unsigned long start_time; 355 356 u32 duration, req_duration; 357 struct sk_buff *frame; 358 u64 cookie, mgmt_tx_cookie; 359 enum ieee80211_roc_type type; 360 }; 361 362 /* flags used in struct ieee80211_if_managed.flags */ 363 enum ieee80211_sta_flags { 364 IEEE80211_STA_CONNECTION_POLL = BIT(1), 365 IEEE80211_STA_CONTROL_PORT = BIT(2), 366 IEEE80211_STA_DISABLE_HT = BIT(4), 367 IEEE80211_STA_MFP_ENABLED = BIT(6), 368 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 369 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 370 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 371 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 372 IEEE80211_STA_DISABLE_VHT = BIT(11), 373 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 374 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 375 IEEE80211_STA_DISABLE_WMM = BIT(14), 376 IEEE80211_STA_ENABLE_RRM = BIT(15), 377 IEEE80211_STA_DISABLE_HE = BIT(16), 378 }; 379 380 struct ieee80211_mgd_auth_data { 381 struct cfg80211_bss *bss; 382 unsigned long timeout; 383 int tries; 384 u16 algorithm, expected_transaction; 385 386 u8 key[WLAN_KEY_LEN_WEP104]; 387 u8 key_len, key_idx; 388 bool done; 389 bool peer_confirmed; 390 bool timeout_started; 391 392 u16 sae_trans, sae_status; 393 size_t data_len; 394 u8 data[]; 395 }; 396 397 struct ieee80211_mgd_assoc_data { 398 struct cfg80211_bss *bss; 399 const u8 *supp_rates; 400 401 unsigned long timeout; 402 int tries; 403 404 u16 capability; 405 u8 prev_bssid[ETH_ALEN]; 406 u8 ssid[IEEE80211_MAX_SSID_LEN]; 407 u8 ssid_len; 408 u8 supp_rates_len; 409 bool wmm, uapsd; 410 bool need_beacon; 411 bool synced; 412 bool timeout_started; 413 414 u8 ap_ht_param; 415 416 struct ieee80211_vht_cap ap_vht_cap; 417 418 u8 fils_nonces[2 * FILS_NONCE_LEN]; 419 u8 fils_kek[FILS_MAX_KEK_LEN]; 420 size_t fils_kek_len; 421 422 size_t ie_len; 423 u8 ie[]; 424 }; 425 426 struct ieee80211_sta_tx_tspec { 427 /* timestamp of the first packet in the time slice */ 428 unsigned long time_slice_start; 429 430 u32 admitted_time; /* in usecs, unlike over the air */ 431 u8 tsid; 432 s8 up; /* signed to be able to invalidate with -1 during teardown */ 433 434 /* consumed TX time in microseconds in the time slice */ 435 u32 consumed_tx_time; 436 enum { 437 TX_TSPEC_ACTION_NONE = 0, 438 TX_TSPEC_ACTION_DOWNGRADE, 439 TX_TSPEC_ACTION_STOP_DOWNGRADE, 440 } action; 441 bool downgraded; 442 }; 443 444 DECLARE_EWMA(beacon_signal, 4, 4) 445 446 struct ieee80211_if_managed { 447 struct timer_list timer; 448 struct timer_list conn_mon_timer; 449 struct timer_list bcn_mon_timer; 450 struct timer_list chswitch_timer; 451 struct work_struct monitor_work; 452 struct work_struct chswitch_work; 453 struct work_struct beacon_connection_loss_work; 454 struct work_struct csa_connection_drop_work; 455 456 unsigned long beacon_timeout; 457 unsigned long probe_timeout; 458 int probe_send_count; 459 bool nullfunc_failed; 460 bool connection_loss; 461 462 struct cfg80211_bss *associated; 463 struct ieee80211_mgd_auth_data *auth_data; 464 struct ieee80211_mgd_assoc_data *assoc_data; 465 466 u8 bssid[ETH_ALEN] __aligned(2); 467 468 bool powersave; /* powersave requested for this iface */ 469 bool broken_ap; /* AP is broken -- turn off powersave */ 470 bool have_beacon; 471 u8 dtim_period; 472 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 473 driver_smps_mode; /* smps mode request */ 474 475 struct work_struct request_smps_work; 476 477 unsigned int flags; 478 479 bool csa_waiting_bcn; 480 bool csa_ignored_same_chan; 481 482 bool beacon_crc_valid; 483 u32 beacon_crc; 484 485 bool status_acked; 486 bool status_received; 487 __le16 status_fc; 488 489 enum { 490 IEEE80211_MFP_DISABLED, 491 IEEE80211_MFP_OPTIONAL, 492 IEEE80211_MFP_REQUIRED 493 } mfp; /* management frame protection */ 494 495 /* 496 * Bitmask of enabled u-apsd queues, 497 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 498 * to take effect. 499 */ 500 unsigned int uapsd_queues; 501 502 /* 503 * Maximum number of buffered frames AP can deliver during a 504 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 505 * Needs a new association to take effect. 506 */ 507 unsigned int uapsd_max_sp_len; 508 509 int wmm_last_param_set; 510 int mu_edca_last_param_set; 511 512 u8 use_4addr; 513 514 s16 p2p_noa_index; 515 516 struct ewma_beacon_signal ave_beacon_signal; 517 518 /* 519 * Number of Beacon frames used in ave_beacon_signal. This can be used 520 * to avoid generating less reliable cqm events that would be based 521 * only on couple of received frames. 522 */ 523 unsigned int count_beacon_signal; 524 525 /* Number of times beacon loss was invoked. */ 526 unsigned int beacon_loss_count; 527 528 /* 529 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 530 * that triggered a cqm event. 0 indicates that no event has been 531 * generated for the current association. 532 */ 533 int last_cqm_event_signal; 534 535 /* 536 * State variables for keeping track of RSSI of the AP currently 537 * connected to and informing driver when RSSI has gone 538 * below/above a certain threshold. 539 */ 540 int rssi_min_thold, rssi_max_thold; 541 int last_ave_beacon_signal; 542 543 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 544 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 545 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 546 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 547 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 548 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 549 550 /* TDLS support */ 551 u8 tdls_peer[ETH_ALEN] __aligned(2); 552 struct delayed_work tdls_peer_del_work; 553 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 554 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 555 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 556 bool tdls_chan_switch_prohibited; 557 bool tdls_wider_bw_prohibited; 558 559 /* WMM-AC TSPEC support */ 560 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 561 /* Use a separate work struct so that we can do something here 562 * while the sdata->work is flushing the queues, for example. 563 * otherwise, in scenarios where we hardly get any traffic out 564 * on the BE queue, but there's a lot of VO traffic, we might 565 * get stuck in a downgraded situation and flush takes forever. 566 */ 567 struct delayed_work tx_tspec_wk; 568 569 /* Information elements from the last transmitted (Re)Association 570 * Request frame. 571 */ 572 u8 *assoc_req_ies; 573 size_t assoc_req_ies_len; 574 }; 575 576 struct ieee80211_if_ibss { 577 struct timer_list timer; 578 struct work_struct csa_connection_drop_work; 579 580 unsigned long last_scan_completed; 581 582 u32 basic_rates; 583 584 bool fixed_bssid; 585 bool fixed_channel; 586 bool privacy; 587 588 bool control_port; 589 bool userspace_handles_dfs; 590 591 u8 bssid[ETH_ALEN] __aligned(2); 592 u8 ssid[IEEE80211_MAX_SSID_LEN]; 593 u8 ssid_len, ie_len; 594 u8 *ie; 595 struct cfg80211_chan_def chandef; 596 597 unsigned long ibss_join_req; 598 /* probe response/beacon for IBSS */ 599 struct beacon_data __rcu *presp; 600 601 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 602 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 603 604 spinlock_t incomplete_lock; 605 struct list_head incomplete_stations; 606 607 enum { 608 IEEE80211_IBSS_MLME_SEARCH, 609 IEEE80211_IBSS_MLME_JOINED, 610 } state; 611 }; 612 613 /** 614 * struct ieee80211_if_ocb - OCB mode state 615 * 616 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 617 * @wrkq_flags: OCB deferred task action 618 * @incomplete_lock: delayed STA insertion lock 619 * @incomplete_stations: list of STAs waiting for delayed insertion 620 * @joined: indication if the interface is connected to an OCB network 621 */ 622 struct ieee80211_if_ocb { 623 struct timer_list housekeeping_timer; 624 unsigned long wrkq_flags; 625 626 spinlock_t incomplete_lock; 627 struct list_head incomplete_stations; 628 629 bool joined; 630 }; 631 632 /** 633 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 634 * 635 * these declarations define the interface, which enables 636 * vendor-specific mesh synchronization 637 * 638 */ 639 struct ieee802_11_elems; 640 struct ieee80211_mesh_sync_ops { 641 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 642 u16 stype, 643 struct ieee80211_mgmt *mgmt, 644 struct ieee802_11_elems *elems, 645 struct ieee80211_rx_status *rx_status); 646 647 /* should be called with beacon_data under RCU read lock */ 648 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 649 struct beacon_data *beacon); 650 /* add other framework functions here */ 651 }; 652 653 struct mesh_csa_settings { 654 struct rcu_head rcu_head; 655 struct cfg80211_csa_settings settings; 656 }; 657 658 struct ieee80211_if_mesh { 659 struct timer_list housekeeping_timer; 660 struct timer_list mesh_path_timer; 661 struct timer_list mesh_path_root_timer; 662 663 unsigned long wrkq_flags; 664 unsigned long mbss_changed; 665 666 bool userspace_handles_dfs; 667 668 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 669 size_t mesh_id_len; 670 /* Active Path Selection Protocol Identifier */ 671 u8 mesh_pp_id; 672 /* Active Path Selection Metric Identifier */ 673 u8 mesh_pm_id; 674 /* Congestion Control Mode Identifier */ 675 u8 mesh_cc_id; 676 /* Synchronization Protocol Identifier */ 677 u8 mesh_sp_id; 678 /* Authentication Protocol Identifier */ 679 u8 mesh_auth_id; 680 /* Local mesh Sequence Number */ 681 u32 sn; 682 /* Last used PREQ ID */ 683 u32 preq_id; 684 atomic_t mpaths; 685 /* Timestamp of last SN update */ 686 unsigned long last_sn_update; 687 /* Time when it's ok to send next PERR */ 688 unsigned long next_perr; 689 /* Timestamp of last PREQ sent */ 690 unsigned long last_preq; 691 struct mesh_rmc *rmc; 692 spinlock_t mesh_preq_queue_lock; 693 struct mesh_preq_queue preq_queue; 694 int preq_queue_len; 695 struct mesh_stats mshstats; 696 struct mesh_config mshcfg; 697 atomic_t estab_plinks; 698 u32 mesh_seqnum; 699 bool accepting_plinks; 700 int num_gates; 701 struct beacon_data __rcu *beacon; 702 const u8 *ie; 703 u8 ie_len; 704 enum { 705 IEEE80211_MESH_SEC_NONE = 0x0, 706 IEEE80211_MESH_SEC_AUTHED = 0x1, 707 IEEE80211_MESH_SEC_SECURED = 0x2, 708 } security; 709 bool user_mpm; 710 /* Extensible Synchronization Framework */ 711 const struct ieee80211_mesh_sync_ops *sync_ops; 712 s64 sync_offset_clockdrift_max; 713 spinlock_t sync_offset_lock; 714 /* mesh power save */ 715 enum nl80211_mesh_power_mode nonpeer_pm; 716 int ps_peers_light_sleep; 717 int ps_peers_deep_sleep; 718 struct ps_data ps; 719 /* Channel Switching Support */ 720 struct mesh_csa_settings __rcu *csa; 721 enum { 722 IEEE80211_MESH_CSA_ROLE_NONE, 723 IEEE80211_MESH_CSA_ROLE_INIT, 724 IEEE80211_MESH_CSA_ROLE_REPEATER, 725 } csa_role; 726 u8 chsw_ttl; 727 u16 pre_value; 728 729 /* offset from skb->data while building IE */ 730 int meshconf_offset; 731 732 struct mesh_table *mesh_paths; 733 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 734 int mesh_paths_generation; 735 int mpp_paths_generation; 736 }; 737 738 #ifdef CONFIG_MAC80211_MESH 739 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 740 do { (msh)->mshstats.name++; } while (0) 741 #else 742 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 743 do { } while (0) 744 #endif 745 746 /** 747 * enum ieee80211_sub_if_data_flags - virtual interface flags 748 * 749 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 750 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 751 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 752 * associated stations and deliver multicast frames both 753 * back to wireless media and to the local net stack. 754 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 755 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 756 */ 757 enum ieee80211_sub_if_data_flags { 758 IEEE80211_SDATA_ALLMULTI = BIT(0), 759 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 760 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 761 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 762 IEEE80211_SDATA_IN_DRIVER = BIT(5), 763 }; 764 765 /** 766 * enum ieee80211_sdata_state_bits - virtual interface state bits 767 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 768 * mirrors netif_running() but is separate for interface type 769 * change handling while the interface is up 770 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 771 * mode, so queues are stopped 772 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 773 * to offchannel, reset when offchannel returns 774 */ 775 enum ieee80211_sdata_state_bits { 776 SDATA_STATE_RUNNING, 777 SDATA_STATE_OFFCHANNEL, 778 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 779 }; 780 781 /** 782 * enum ieee80211_chanctx_mode - channel context configuration mode 783 * 784 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 785 * multiple interfaces 786 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 787 * only by a single interface. This can be used for example for 788 * non-fixed channel IBSS. 789 */ 790 enum ieee80211_chanctx_mode { 791 IEEE80211_CHANCTX_SHARED, 792 IEEE80211_CHANCTX_EXCLUSIVE 793 }; 794 795 /** 796 * enum ieee80211_chanctx_replace_state - channel context replacement state 797 * 798 * This is used for channel context in-place reservations that require channel 799 * context switch/swap. 800 * 801 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 802 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 803 * by a (not yet registered) channel context pointed by %replace_ctx. 804 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 805 * replaces an existing channel context pointed to by %replace_ctx. 806 */ 807 enum ieee80211_chanctx_replace_state { 808 IEEE80211_CHANCTX_REPLACE_NONE, 809 IEEE80211_CHANCTX_WILL_BE_REPLACED, 810 IEEE80211_CHANCTX_REPLACES_OTHER, 811 }; 812 813 struct ieee80211_chanctx { 814 struct list_head list; 815 struct rcu_head rcu_head; 816 817 struct list_head assigned_vifs; 818 struct list_head reserved_vifs; 819 820 enum ieee80211_chanctx_replace_state replace_state; 821 struct ieee80211_chanctx *replace_ctx; 822 823 enum ieee80211_chanctx_mode mode; 824 bool driver_present; 825 826 struct ieee80211_chanctx_conf conf; 827 }; 828 829 struct mac80211_qos_map { 830 struct cfg80211_qos_map qos_map; 831 struct rcu_head rcu_head; 832 }; 833 834 enum txq_info_flags { 835 IEEE80211_TXQ_STOP, 836 IEEE80211_TXQ_AMPDU, 837 IEEE80211_TXQ_NO_AMSDU, 838 IEEE80211_TXQ_STOP_NETIF_TX, 839 }; 840 841 /** 842 * struct txq_info - per tid queue 843 * 844 * @tin: contains packets split into multiple flows 845 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 846 * a fq_flow which is already owned by a different tin 847 * @def_cvars: codel vars for @def_flow 848 * @frags: used to keep fragments created after dequeue 849 * @schedule_order: used with ieee80211_local->active_txqs 850 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 851 */ 852 struct txq_info { 853 struct fq_tin tin; 854 struct fq_flow def_flow; 855 struct codel_vars def_cvars; 856 struct codel_stats cstats; 857 struct sk_buff_head frags; 858 struct list_head schedule_order; 859 u16 schedule_round; 860 unsigned long flags; 861 862 /* keep last! */ 863 struct ieee80211_txq txq; 864 }; 865 866 struct ieee80211_if_mntr { 867 u32 flags; 868 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 869 870 struct list_head list; 871 }; 872 873 /** 874 * struct ieee80211_if_nan - NAN state 875 * 876 * @conf: current NAN configuration 877 * @func_ids: a bitmap of available instance_id's 878 */ 879 struct ieee80211_if_nan { 880 struct cfg80211_nan_conf conf; 881 882 /* protects function_inst_ids */ 883 spinlock_t func_lock; 884 struct idr function_inst_ids; 885 }; 886 887 struct ieee80211_sub_if_data { 888 struct list_head list; 889 890 struct wireless_dev wdev; 891 892 /* keys */ 893 struct list_head key_list; 894 895 /* count for keys needing tailroom space allocation */ 896 int crypto_tx_tailroom_needed_cnt; 897 int crypto_tx_tailroom_pending_dec; 898 struct delayed_work dec_tailroom_needed_wk; 899 900 struct net_device *dev; 901 struct ieee80211_local *local; 902 903 unsigned int flags; 904 905 unsigned long state; 906 907 char name[IFNAMSIZ]; 908 909 /* Fragment table for host-based reassembly */ 910 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 911 unsigned int fragment_next; 912 913 /* TID bitmap for NoAck policy */ 914 u16 noack_map; 915 916 /* bit field of ACM bits (BIT(802.1D tag)) */ 917 u8 wmm_acm; 918 919 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 920 NUM_DEFAULT_MGMT_KEYS + 921 NUM_DEFAULT_BEACON_KEYS]; 922 struct ieee80211_key __rcu *default_unicast_key; 923 struct ieee80211_key __rcu *default_multicast_key; 924 struct ieee80211_key __rcu *default_mgmt_key; 925 struct ieee80211_key __rcu *default_beacon_key; 926 927 u16 sequence_number; 928 __be16 control_port_protocol; 929 bool control_port_no_encrypt; 930 bool control_port_no_preauth; 931 bool control_port_over_nl80211; 932 int encrypt_headroom; 933 934 atomic_t num_tx_queued; 935 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 936 struct mac80211_qos_map __rcu *qos_map; 937 938 struct work_struct csa_finalize_work; 939 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 940 struct cfg80211_chan_def csa_chandef; 941 942 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 943 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 944 945 /* context reservation -- protected with chanctx_mtx */ 946 struct ieee80211_chanctx *reserved_chanctx; 947 struct cfg80211_chan_def reserved_chandef; 948 bool reserved_radar_required; 949 bool reserved_ready; 950 951 /* used to reconfigure hardware SM PS */ 952 struct work_struct recalc_smps; 953 954 struct work_struct work; 955 struct sk_buff_head skb_queue; 956 957 u8 needed_rx_chains; 958 enum ieee80211_smps_mode smps_mode; 959 960 int user_power_level; /* in dBm */ 961 int ap_power_level; /* in dBm */ 962 963 bool radar_required; 964 struct delayed_work dfs_cac_timer_work; 965 966 /* 967 * AP this belongs to: self in AP mode and 968 * corresponding AP in VLAN mode, NULL for 969 * all others (might be needed later in IBSS) 970 */ 971 struct ieee80211_if_ap *bss; 972 973 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 974 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 975 976 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 977 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 978 979 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 980 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 981 982 /* Beacon frame (non-MCS) rate (as a bitmap) */ 983 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 984 bool beacon_rate_set; 985 986 union { 987 struct ieee80211_if_ap ap; 988 struct ieee80211_if_wds wds; 989 struct ieee80211_if_vlan vlan; 990 struct ieee80211_if_managed mgd; 991 struct ieee80211_if_ibss ibss; 992 struct ieee80211_if_mesh mesh; 993 struct ieee80211_if_ocb ocb; 994 struct ieee80211_if_mntr mntr; 995 struct ieee80211_if_nan nan; 996 } u; 997 998 #ifdef CONFIG_MAC80211_DEBUGFS 999 struct { 1000 struct dentry *subdir_stations; 1001 struct dentry *default_unicast_key; 1002 struct dentry *default_multicast_key; 1003 struct dentry *default_mgmt_key; 1004 struct dentry *default_beacon_key; 1005 } debugfs; 1006 #endif 1007 1008 /* must be last, dynamically sized area in this! */ 1009 struct ieee80211_vif vif; 1010 }; 1011 1012 static inline 1013 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1014 { 1015 return container_of(p, struct ieee80211_sub_if_data, vif); 1016 } 1017 1018 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1019 __acquires(&sdata->wdev.mtx) 1020 { 1021 mutex_lock(&sdata->wdev.mtx); 1022 __acquire(&sdata->wdev.mtx); 1023 } 1024 1025 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1026 __releases(&sdata->wdev.mtx) 1027 { 1028 mutex_unlock(&sdata->wdev.mtx); 1029 __release(&sdata->wdev.mtx); 1030 } 1031 1032 #define sdata_dereference(p, sdata) \ 1033 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1034 1035 static inline void 1036 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1037 { 1038 lockdep_assert_held(&sdata->wdev.mtx); 1039 } 1040 1041 static inline int 1042 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1043 { 1044 switch (chandef->width) { 1045 case NL80211_CHAN_WIDTH_5: 1046 return 2; 1047 case NL80211_CHAN_WIDTH_10: 1048 return 1; 1049 default: 1050 return 0; 1051 } 1052 } 1053 1054 static inline int 1055 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1056 { 1057 struct ieee80211_chanctx_conf *chanctx_conf; 1058 int shift = 0; 1059 1060 rcu_read_lock(); 1061 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1062 if (chanctx_conf) 1063 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1064 rcu_read_unlock(); 1065 1066 return shift; 1067 } 1068 1069 enum { 1070 IEEE80211_RX_MSG = 1, 1071 IEEE80211_TX_STATUS_MSG = 2, 1072 }; 1073 1074 enum queue_stop_reason { 1075 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1076 IEEE80211_QUEUE_STOP_REASON_PS, 1077 IEEE80211_QUEUE_STOP_REASON_CSA, 1078 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1079 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1080 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1081 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1082 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1083 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1084 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1085 1086 IEEE80211_QUEUE_STOP_REASONS, 1087 }; 1088 1089 #ifdef CONFIG_MAC80211_LEDS 1090 struct tpt_led_trigger { 1091 char name[32]; 1092 const struct ieee80211_tpt_blink *blink_table; 1093 unsigned int blink_table_len; 1094 struct timer_list timer; 1095 struct ieee80211_local *local; 1096 unsigned long prev_traffic; 1097 unsigned long tx_bytes, rx_bytes; 1098 unsigned int active, want; 1099 bool running; 1100 }; 1101 #endif 1102 1103 /** 1104 * mac80211 scan flags - currently active scan mode 1105 * 1106 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1107 * well be on the operating channel 1108 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1109 * determine if we are on the operating channel or not 1110 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1111 * channel. This should not interrupt normal traffic. 1112 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1113 * that the scan completed. 1114 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1115 * a scan complete for an aborted scan. 1116 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1117 * cancelled. 1118 */ 1119 enum { 1120 SCAN_SW_SCANNING, 1121 SCAN_HW_SCANNING, 1122 SCAN_ONCHANNEL_SCANNING, 1123 SCAN_COMPLETED, 1124 SCAN_ABORTED, 1125 SCAN_HW_CANCELLED, 1126 }; 1127 1128 /** 1129 * enum mac80211_scan_state - scan state machine states 1130 * 1131 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1132 * determines if we should keep on scanning or switch back to the 1133 * operating channel 1134 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1135 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1136 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1137 * send out data 1138 * @SCAN_RESUME: Resume the scan and scan the next channel 1139 * @SCAN_ABORT: Abort the scan and go back to operating channel 1140 */ 1141 enum mac80211_scan_state { 1142 SCAN_DECISION, 1143 SCAN_SET_CHANNEL, 1144 SCAN_SEND_PROBE, 1145 SCAN_SUSPEND, 1146 SCAN_RESUME, 1147 SCAN_ABORT, 1148 }; 1149 1150 struct ieee80211_local { 1151 /* embed the driver visible part. 1152 * don't cast (use the static inlines below), but we keep 1153 * it first anyway so they become a no-op */ 1154 struct ieee80211_hw hw; 1155 1156 struct fq fq; 1157 struct codel_vars *cvars; 1158 struct codel_params cparams; 1159 1160 /* protects active_txqs and txqi->schedule_order */ 1161 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1162 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1163 u16 schedule_round[IEEE80211_NUM_ACS]; 1164 1165 u16 airtime_flags; 1166 u32 aql_txq_limit_low[IEEE80211_NUM_ACS]; 1167 u32 aql_txq_limit_high[IEEE80211_NUM_ACS]; 1168 u32 aql_threshold; 1169 atomic_t aql_total_pending_airtime; 1170 1171 const struct ieee80211_ops *ops; 1172 1173 /* 1174 * private workqueue to mac80211. mac80211 makes this accessible 1175 * via ieee80211_queue_work() 1176 */ 1177 struct workqueue_struct *workqueue; 1178 1179 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1180 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1181 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1182 spinlock_t queue_stop_reason_lock; 1183 1184 int open_count; 1185 int monitors, cooked_mntrs; 1186 /* number of interfaces with corresponding FIF_ flags */ 1187 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1188 fif_probe_req; 1189 bool probe_req_reg; 1190 bool rx_mcast_action_reg; 1191 unsigned int filter_flags; /* FIF_* */ 1192 1193 bool wiphy_ciphers_allocated; 1194 1195 bool use_chanctx; 1196 1197 /* protects the aggregated multicast list and filter calls */ 1198 spinlock_t filter_lock; 1199 1200 /* used for uploading changed mc list */ 1201 struct work_struct reconfig_filter; 1202 1203 /* aggregated multicast list */ 1204 struct netdev_hw_addr_list mc_list; 1205 1206 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1207 1208 /* 1209 * suspended is true if we finished all the suspend _and_ we have 1210 * not yet come up from resume. This is to be used by mac80211 1211 * to ensure driver sanity during suspend and mac80211's own 1212 * sanity. It can eventually be used for WoW as well. 1213 */ 1214 bool suspended; 1215 1216 /* 1217 * Resuming is true while suspended, but when we're reprogramming the 1218 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1219 * again even though some other parts of the stack are still suspended 1220 * and we still drop received frames to avoid waking the stack. 1221 */ 1222 bool resuming; 1223 1224 /* 1225 * quiescing is true during the suspend process _only_ to 1226 * ease timer cancelling etc. 1227 */ 1228 bool quiescing; 1229 1230 /* device is started */ 1231 bool started; 1232 1233 /* device is during a HW reconfig */ 1234 bool in_reconfig; 1235 1236 /* wowlan is enabled -- don't reconfig on resume */ 1237 bool wowlan; 1238 1239 struct work_struct radar_detected_work; 1240 1241 /* number of RX chains the hardware has */ 1242 u8 rx_chains; 1243 1244 /* bitmap of which sbands were copied */ 1245 u8 sband_allocated; 1246 1247 int tx_headroom; /* required headroom for hardware/radiotap */ 1248 1249 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1250 * added to skb_queue will be processed, but frames in 1251 * skb_queue_unreliable may be dropped if the total length of these 1252 * queues increases over the limit. */ 1253 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1254 struct tasklet_struct tasklet; 1255 struct sk_buff_head skb_queue; 1256 struct sk_buff_head skb_queue_unreliable; 1257 1258 spinlock_t rx_path_lock; 1259 1260 /* Station data */ 1261 /* 1262 * The mutex only protects the list, hash table and 1263 * counter, reads are done with RCU. 1264 */ 1265 struct mutex sta_mtx; 1266 spinlock_t tim_lock; 1267 unsigned long num_sta; 1268 struct list_head sta_list; 1269 struct rhltable sta_hash; 1270 struct timer_list sta_cleanup; 1271 int sta_generation; 1272 1273 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1274 struct tasklet_struct tx_pending_tasklet; 1275 struct tasklet_struct wake_txqs_tasklet; 1276 1277 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1278 1279 /* number of interfaces with allmulti RX */ 1280 atomic_t iff_allmultis; 1281 1282 struct rate_control_ref *rate_ctrl; 1283 1284 struct arc4_ctx wep_tx_ctx; 1285 struct arc4_ctx wep_rx_ctx; 1286 u32 wep_iv; 1287 1288 /* see iface.c */ 1289 struct list_head interfaces; 1290 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1291 struct mutex iflist_mtx; 1292 1293 /* 1294 * Key mutex, protects sdata's key_list and sta_info's 1295 * key pointers and ptk_idx (write access, they're RCU.) 1296 */ 1297 struct mutex key_mtx; 1298 1299 /* mutex for scan and work locking */ 1300 struct mutex mtx; 1301 1302 /* Scanning and BSS list */ 1303 unsigned long scanning; 1304 struct cfg80211_ssid scan_ssid; 1305 struct cfg80211_scan_request *int_scan_req; 1306 struct cfg80211_scan_request __rcu *scan_req; 1307 struct ieee80211_scan_request *hw_scan_req; 1308 struct cfg80211_chan_def scan_chandef; 1309 enum nl80211_band hw_scan_band; 1310 int scan_channel_idx; 1311 int scan_ies_len; 1312 int hw_scan_ies_bufsize; 1313 struct cfg80211_scan_info scan_info; 1314 1315 struct work_struct sched_scan_stopped_work; 1316 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1317 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1318 u8 scan_addr[ETH_ALEN]; 1319 1320 unsigned long leave_oper_channel_time; 1321 enum mac80211_scan_state next_scan_state; 1322 struct delayed_work scan_work; 1323 struct ieee80211_sub_if_data __rcu *scan_sdata; 1324 /* For backward compatibility only -- do not use */ 1325 struct cfg80211_chan_def _oper_chandef; 1326 1327 /* Temporary remain-on-channel for off-channel operations */ 1328 struct ieee80211_channel *tmp_channel; 1329 1330 /* channel contexts */ 1331 struct list_head chanctx_list; 1332 struct mutex chanctx_mtx; 1333 1334 #ifdef CONFIG_MAC80211_LEDS 1335 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1336 struct led_trigger tpt_led; 1337 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1338 atomic_t radio_led_active, tpt_led_active; 1339 struct tpt_led_trigger *tpt_led_trigger; 1340 #endif 1341 1342 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1343 /* SNMP counters */ 1344 /* dot11CountersTable */ 1345 u32 dot11TransmittedFragmentCount; 1346 u32 dot11MulticastTransmittedFrameCount; 1347 u32 dot11FailedCount; 1348 u32 dot11RetryCount; 1349 u32 dot11MultipleRetryCount; 1350 u32 dot11FrameDuplicateCount; 1351 u32 dot11ReceivedFragmentCount; 1352 u32 dot11MulticastReceivedFrameCount; 1353 u32 dot11TransmittedFrameCount; 1354 1355 /* TX/RX handler statistics */ 1356 unsigned int tx_handlers_drop; 1357 unsigned int tx_handlers_queued; 1358 unsigned int tx_handlers_drop_wep; 1359 unsigned int tx_handlers_drop_not_assoc; 1360 unsigned int tx_handlers_drop_unauth_port; 1361 unsigned int rx_handlers_drop; 1362 unsigned int rx_handlers_queued; 1363 unsigned int rx_handlers_drop_nullfunc; 1364 unsigned int rx_handlers_drop_defrag; 1365 unsigned int tx_expand_skb_head; 1366 unsigned int tx_expand_skb_head_cloned; 1367 unsigned int rx_expand_skb_head_defrag; 1368 unsigned int rx_handlers_fragments; 1369 unsigned int tx_status_drop; 1370 #define I802_DEBUG_INC(c) (c)++ 1371 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1372 #define I802_DEBUG_INC(c) do { } while (0) 1373 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1374 1375 1376 int total_ps_buffered; /* total number of all buffered unicast and 1377 * multicast packets for power saving stations 1378 */ 1379 1380 bool pspolling; 1381 /* 1382 * PS can only be enabled when we have exactly one managed 1383 * interface (and monitors) in PS, this then points there. 1384 */ 1385 struct ieee80211_sub_if_data *ps_sdata; 1386 struct work_struct dynamic_ps_enable_work; 1387 struct work_struct dynamic_ps_disable_work; 1388 struct timer_list dynamic_ps_timer; 1389 struct notifier_block ifa_notifier; 1390 struct notifier_block ifa6_notifier; 1391 1392 /* 1393 * The dynamic ps timeout configured from user space via WEXT - 1394 * this will override whatever chosen by mac80211 internally. 1395 */ 1396 int dynamic_ps_forced_timeout; 1397 1398 int user_power_level; /* in dBm, for all interfaces */ 1399 1400 enum ieee80211_smps_mode smps_mode; 1401 1402 struct work_struct restart_work; 1403 1404 #ifdef CONFIG_MAC80211_DEBUGFS 1405 struct local_debugfsdentries { 1406 struct dentry *rcdir; 1407 struct dentry *keys; 1408 } debugfs; 1409 bool force_tx_status; 1410 #endif 1411 1412 /* 1413 * Remain-on-channel support 1414 */ 1415 struct delayed_work roc_work; 1416 struct list_head roc_list; 1417 struct work_struct hw_roc_start, hw_roc_done; 1418 unsigned long hw_roc_start_time; 1419 u64 roc_cookie_counter; 1420 1421 struct idr ack_status_frames; 1422 spinlock_t ack_status_lock; 1423 1424 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1425 1426 /* virtual monitor interface */ 1427 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1428 struct cfg80211_chan_def monitor_chandef; 1429 1430 /* extended capabilities provided by mac80211 */ 1431 u8 ext_capa[8]; 1432 1433 /* TDLS channel switch */ 1434 struct work_struct tdls_chsw_work; 1435 struct sk_buff_head skb_queue_tdls_chsw; 1436 }; 1437 1438 static inline struct ieee80211_sub_if_data * 1439 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1440 { 1441 return netdev_priv(dev); 1442 } 1443 1444 static inline struct ieee80211_sub_if_data * 1445 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1446 { 1447 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1448 } 1449 1450 static inline struct ieee80211_supported_band * 1451 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1452 { 1453 struct ieee80211_local *local = sdata->local; 1454 struct ieee80211_chanctx_conf *chanctx_conf; 1455 enum nl80211_band band; 1456 1457 rcu_read_lock(); 1458 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1459 1460 if (WARN_ON_ONCE(!chanctx_conf)) { 1461 rcu_read_unlock(); 1462 return NULL; 1463 } 1464 1465 band = chanctx_conf->def.chan->band; 1466 rcu_read_unlock(); 1467 1468 return local->hw.wiphy->bands[band]; 1469 } 1470 1471 /* this struct holds the value parsing from channel switch IE */ 1472 struct ieee80211_csa_ie { 1473 struct cfg80211_chan_def chandef; 1474 u8 mode; 1475 u8 count; 1476 u8 ttl; 1477 u16 pre_value; 1478 u16 reason_code; 1479 u32 max_switch_time; 1480 }; 1481 1482 /* Parsed Information Elements */ 1483 struct ieee802_11_elems { 1484 const u8 *ie_start; 1485 size_t total_len; 1486 1487 /* pointers to IEs */ 1488 const struct ieee80211_tdls_lnkie *lnk_id; 1489 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1490 const u8 *ext_capab; 1491 const u8 *ssid; 1492 const u8 *supp_rates; 1493 const u8 *ds_params; 1494 const struct ieee80211_tim_ie *tim; 1495 const u8 *challenge; 1496 const u8 *rsn; 1497 const u8 *rsnx; 1498 const u8 *erp_info; 1499 const u8 *ext_supp_rates; 1500 const u8 *wmm_info; 1501 const u8 *wmm_param; 1502 const struct ieee80211_ht_cap *ht_cap_elem; 1503 const struct ieee80211_ht_operation *ht_operation; 1504 const struct ieee80211_vht_cap *vht_cap_elem; 1505 const struct ieee80211_vht_operation *vht_operation; 1506 const struct ieee80211_meshconf_ie *mesh_config; 1507 const u8 *he_cap; 1508 const struct ieee80211_he_operation *he_operation; 1509 const struct ieee80211_he_spr *he_spr; 1510 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1511 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1512 const u8 *uora_element; 1513 const u8 *mesh_id; 1514 const u8 *peering; 1515 const __le16 *awake_window; 1516 const u8 *preq; 1517 const u8 *prep; 1518 const u8 *perr; 1519 const struct ieee80211_rann_ie *rann; 1520 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1521 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1522 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1523 const u8 *max_channel_switch_time; 1524 const u8 *country_elem; 1525 const u8 *pwr_constr_elem; 1526 const u8 *cisco_dtpc_elem; 1527 const struct ieee80211_timeout_interval_ie *timeout_int; 1528 const u8 *opmode_notif; 1529 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1530 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1531 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1532 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1533 const struct ieee80211_bssid_index *bssid_index; 1534 u8 max_bssid_indicator; 1535 u8 dtim_count; 1536 u8 dtim_period; 1537 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1538 const struct ieee80211_s1g_cap *s1g_capab; 1539 const struct ieee80211_s1g_oper_ie *s1g_oper; 1540 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1541 const struct ieee80211_aid_response_ie *aid_resp; 1542 1543 /* length of them, respectively */ 1544 u8 ext_capab_len; 1545 u8 ssid_len; 1546 u8 supp_rates_len; 1547 u8 tim_len; 1548 u8 challenge_len; 1549 u8 rsn_len; 1550 u8 rsnx_len; 1551 u8 ext_supp_rates_len; 1552 u8 wmm_info_len; 1553 u8 wmm_param_len; 1554 u8 he_cap_len; 1555 u8 mesh_id_len; 1556 u8 peering_len; 1557 u8 preq_len; 1558 u8 prep_len; 1559 u8 perr_len; 1560 u8 country_elem_len; 1561 u8 bssid_index_len; 1562 1563 /* whether a parse error occurred while retrieving these elements */ 1564 bool parse_error; 1565 }; 1566 1567 static inline struct ieee80211_local *hw_to_local( 1568 struct ieee80211_hw *hw) 1569 { 1570 return container_of(hw, struct ieee80211_local, hw); 1571 } 1572 1573 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1574 { 1575 return container_of(txq, struct txq_info, txq); 1576 } 1577 1578 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1579 { 1580 struct txq_info *txqi = to_txq_info(txq); 1581 1582 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1583 } 1584 1585 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1586 { 1587 return ether_addr_equal(raddr, addr) || 1588 is_broadcast_ether_addr(raddr); 1589 } 1590 1591 static inline bool 1592 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1593 { 1594 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1595 status->flag & RX_FLAG_MACTIME_END); 1596 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1597 return true; 1598 /* can't handle non-legacy preamble yet */ 1599 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1600 status->encoding == RX_ENC_LEGACY) 1601 return true; 1602 return false; 1603 } 1604 1605 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1606 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1607 1608 /* This function returns the number of multicast stations connected to this 1609 * interface. It returns -1 if that number is not tracked, that is for netdevs 1610 * not in AP or AP_VLAN mode or when using 4addr. 1611 */ 1612 static inline int 1613 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1614 { 1615 if (sdata->vif.type == NL80211_IFTYPE_AP) 1616 return atomic_read(&sdata->u.ap.num_mcast_sta); 1617 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1618 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1619 return -1; 1620 } 1621 1622 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1623 struct ieee80211_rx_status *status, 1624 unsigned int mpdu_len, 1625 unsigned int mpdu_offset); 1626 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1627 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1628 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1629 u32 changed); 1630 void ieee80211_configure_filter(struct ieee80211_local *local); 1631 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1632 1633 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1634 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1635 u64 *cookie, gfp_t gfp); 1636 1637 void ieee80211_check_fast_rx(struct sta_info *sta); 1638 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1639 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1640 void ieee80211_clear_fast_rx(struct sta_info *sta); 1641 1642 /* STA code */ 1643 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1644 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1645 struct cfg80211_auth_request *req); 1646 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1647 struct cfg80211_assoc_request *req); 1648 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1649 struct cfg80211_deauth_request *req); 1650 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1651 struct cfg80211_disassoc_request *req); 1652 void ieee80211_send_pspoll(struct ieee80211_local *local, 1653 struct ieee80211_sub_if_data *sdata); 1654 void ieee80211_recalc_ps(struct ieee80211_local *local); 1655 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1656 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1657 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1658 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1659 struct sk_buff *skb); 1660 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1661 struct sk_buff *skb); 1662 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1663 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1664 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1665 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1666 __le16 fc, bool acked); 1667 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1668 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1669 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1670 1671 /* IBSS code */ 1672 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1673 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1674 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1675 const u8 *bssid, const u8 *addr, u32 supp_rates); 1676 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1677 struct cfg80211_ibss_params *params); 1678 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1679 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1680 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1681 struct sk_buff *skb); 1682 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1683 struct cfg80211_csa_settings *csa_settings); 1684 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1685 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1686 1687 /* OCB code */ 1688 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1689 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1690 const u8 *bssid, const u8 *addr, u32 supp_rates); 1691 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1692 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1693 struct ocb_setup *setup); 1694 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1695 1696 /* mesh code */ 1697 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1698 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1699 struct sk_buff *skb); 1700 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1701 struct cfg80211_csa_settings *csa_settings); 1702 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1703 1704 /* scan/BSS handling */ 1705 void ieee80211_scan_work(struct work_struct *work); 1706 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1707 const u8 *ssid, u8 ssid_len, 1708 struct ieee80211_channel **channels, 1709 unsigned int n_channels, 1710 enum nl80211_bss_scan_width scan_width); 1711 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1712 struct cfg80211_scan_request *req); 1713 void ieee80211_scan_cancel(struct ieee80211_local *local); 1714 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1715 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1716 1717 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1718 struct ieee80211_bss * 1719 ieee80211_bss_info_update(struct ieee80211_local *local, 1720 struct ieee80211_rx_status *rx_status, 1721 struct ieee80211_mgmt *mgmt, 1722 size_t len, 1723 struct ieee80211_channel *channel); 1724 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1725 struct ieee80211_bss *bss); 1726 1727 /* scheduled scan handling */ 1728 int 1729 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1730 struct cfg80211_sched_scan_request *req); 1731 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1732 struct cfg80211_sched_scan_request *req); 1733 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1734 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1735 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1736 1737 /* off-channel/mgmt-tx */ 1738 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1739 void ieee80211_offchannel_return(struct ieee80211_local *local); 1740 void ieee80211_roc_setup(struct ieee80211_local *local); 1741 void ieee80211_start_next_roc(struct ieee80211_local *local); 1742 void ieee80211_roc_purge(struct ieee80211_local *local, 1743 struct ieee80211_sub_if_data *sdata); 1744 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1745 struct ieee80211_channel *chan, 1746 unsigned int duration, u64 *cookie); 1747 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1748 struct wireless_dev *wdev, u64 cookie); 1749 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1750 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1751 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1752 struct wireless_dev *wdev, u64 cookie); 1753 1754 /* channel switch handling */ 1755 void ieee80211_csa_finalize_work(struct work_struct *work); 1756 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1757 struct cfg80211_csa_settings *params); 1758 1759 /* interface handling */ 1760 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1761 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1762 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1763 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1764 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1765 MAC80211_SUPPORTED_FEATURES_RX) 1766 1767 int ieee80211_iface_init(void); 1768 void ieee80211_iface_exit(void); 1769 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1770 unsigned char name_assign_type, 1771 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1772 struct vif_params *params); 1773 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1774 enum nl80211_iftype type); 1775 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1776 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1777 u32 ieee80211_idle_off(struct ieee80211_local *local); 1778 void ieee80211_recalc_idle(struct ieee80211_local *local); 1779 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1780 const int offset); 1781 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1782 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1783 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1784 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1785 1786 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1787 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1788 bool update_bss); 1789 void ieee80211_recalc_offload(struct ieee80211_local *local); 1790 1791 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1792 { 1793 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1794 } 1795 1796 /* tx handling */ 1797 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1798 void ieee80211_tx_pending(unsigned long data); 1799 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1800 struct net_device *dev); 1801 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1802 struct net_device *dev); 1803 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1804 struct net_device *dev); 1805 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1806 struct net_device *dev, 1807 u32 info_flags, 1808 u32 ctrl_flags, 1809 u64 *cookie); 1810 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1811 struct sk_buff_head *skbs); 1812 struct sk_buff * 1813 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1814 struct sk_buff *skb, u32 info_flags); 1815 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1816 struct ieee80211_supported_band *sband, 1817 int retry_count, int shift, bool send_to_cooked, 1818 struct ieee80211_tx_status *status); 1819 1820 void ieee80211_check_fast_xmit(struct sta_info *sta); 1821 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1822 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1823 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1824 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1825 const u8 *buf, size_t len, 1826 const u8 *dest, __be16 proto, bool unencrypted, 1827 u64 *cookie); 1828 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1829 const u8 *buf, size_t len); 1830 1831 /* HT */ 1832 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1833 struct ieee80211_sta_ht_cap *ht_cap); 1834 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1835 struct ieee80211_supported_band *sband, 1836 const struct ieee80211_ht_cap *ht_cap_ie, 1837 struct sta_info *sta); 1838 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1839 const u8 *da, u16 tid, 1840 u16 initiator, u16 reason_code); 1841 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1842 enum ieee80211_smps_mode smps, const u8 *da, 1843 const u8 *bssid); 1844 void ieee80211_request_smps_ap_work(struct work_struct *work); 1845 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1846 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1847 enum ieee80211_smps_mode smps_mode_new); 1848 1849 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1850 u16 initiator, u16 reason, bool stop); 1851 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1852 u16 initiator, u16 reason, bool stop); 1853 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1854 u8 dialog_token, u16 timeout, 1855 u16 start_seq_num, u16 ba_policy, u16 tid, 1856 u16 buf_size, bool tx, bool auto_seq, 1857 const struct ieee80211_addba_ext_ie *addbaext); 1858 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1859 enum ieee80211_agg_stop_reason reason); 1860 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1861 struct sta_info *sta, 1862 struct ieee80211_mgmt *mgmt, size_t len); 1863 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1864 struct sta_info *sta, 1865 struct ieee80211_mgmt *mgmt, 1866 size_t len); 1867 void ieee80211_process_addba_request(struct ieee80211_local *local, 1868 struct sta_info *sta, 1869 struct ieee80211_mgmt *mgmt, 1870 size_t len); 1871 1872 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1873 enum ieee80211_agg_stop_reason reason); 1874 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1875 enum ieee80211_agg_stop_reason reason); 1876 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1877 struct tid_ampdu_tx *tid_tx); 1878 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1879 struct tid_ampdu_tx *tid_tx); 1880 void ieee80211_ba_session_work(struct work_struct *work); 1881 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1882 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1883 1884 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1885 enum nl80211_smps_mode 1886 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1887 1888 /* VHT */ 1889 void 1890 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1891 struct ieee80211_supported_band *sband, 1892 const struct ieee80211_vht_cap *vht_cap_ie, 1893 struct sta_info *sta); 1894 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1895 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1896 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1897 enum ieee80211_sta_rx_bandwidth 1898 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1899 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1900 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1901 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1902 struct ieee80211_mgmt *mgmt); 1903 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1904 struct sta_info *sta, u8 opmode, 1905 enum nl80211_band band); 1906 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1907 struct sta_info *sta, u8 opmode, 1908 enum nl80211_band band); 1909 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1910 struct ieee80211_sta_vht_cap *vht_cap); 1911 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1912 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1913 enum nl80211_chan_width 1914 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1915 1916 /* HE */ 1917 void 1918 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1919 struct ieee80211_supported_band *sband, 1920 const u8 *he_cap_ie, u8 he_cap_len, 1921 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 1922 struct sta_info *sta); 1923 void 1924 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 1925 const struct ieee80211_he_spr *he_spr_ie_elem); 1926 1927 void 1928 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 1929 const struct ieee80211_he_operation *he_op_ie_elem); 1930 1931 /* S1G */ 1932 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 1933 1934 /* Spectrum management */ 1935 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1936 struct ieee80211_mgmt *mgmt, 1937 size_t len); 1938 /** 1939 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1940 * @sdata: the sdata of the interface which has received the frame 1941 * @elems: parsed 802.11 elements received with the frame 1942 * @current_band: indicates the current band 1943 * @vht_cap_info: VHT capabilities of the transmitter 1944 * @sta_flags: contains information about own capabilities and restrictions 1945 * to decide which channel switch announcements can be accepted. Only the 1946 * following subset of &enum ieee80211_sta_flags are evaluated: 1947 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1948 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1949 * %IEEE80211_STA_DISABLE_160MHZ. 1950 * @bssid: the currently connected bssid (for reporting) 1951 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1952 All of them will be filled with if success only. 1953 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1954 */ 1955 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1956 struct ieee802_11_elems *elems, 1957 enum nl80211_band current_band, 1958 u32 vht_cap_info, 1959 u32 sta_flags, u8 *bssid, 1960 struct ieee80211_csa_ie *csa_ie); 1961 1962 /* Suspend/resume and hw reconfiguration */ 1963 int ieee80211_reconfig(struct ieee80211_local *local); 1964 void ieee80211_stop_device(struct ieee80211_local *local); 1965 1966 int __ieee80211_suspend(struct ieee80211_hw *hw, 1967 struct cfg80211_wowlan *wowlan); 1968 1969 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1970 { 1971 struct ieee80211_local *local = hw_to_local(hw); 1972 1973 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1974 !test_bit(SCAN_COMPLETED, &local->scanning), 1975 "%s: resume with hardware scan still in progress\n", 1976 wiphy_name(hw->wiphy)); 1977 1978 return ieee80211_reconfig(hw_to_local(hw)); 1979 } 1980 1981 /* utility functions/constants */ 1982 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1983 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1984 int rate, int erp, int short_preamble, 1985 int shift); 1986 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1987 struct ieee80211_tx_queue_params *qparam, 1988 int ac); 1989 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1990 bool bss_notify, bool enable_qos); 1991 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1992 struct sta_info *sta, struct sk_buff *skb); 1993 1994 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1995 struct sk_buff *skb, int tid, 1996 enum nl80211_band band); 1997 1998 /* sta_out needs to be checked for ERR_PTR() before using */ 1999 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2000 struct sk_buff *skb, 2001 struct sta_info **sta_out); 2002 2003 static inline void 2004 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2005 struct sk_buff *skb, int tid, 2006 enum nl80211_band band) 2007 { 2008 rcu_read_lock(); 2009 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 2010 rcu_read_unlock(); 2011 } 2012 2013 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2014 struct sk_buff *skb, int tid) 2015 { 2016 struct ieee80211_chanctx_conf *chanctx_conf; 2017 2018 rcu_read_lock(); 2019 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2020 if (WARN_ON(!chanctx_conf)) { 2021 rcu_read_unlock(); 2022 kfree_skb(skb); 2023 return; 2024 } 2025 2026 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2027 chanctx_conf->def.chan->band); 2028 rcu_read_unlock(); 2029 } 2030 2031 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2032 struct sk_buff *skb) 2033 { 2034 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2035 ieee80211_tx_skb_tid(sdata, skb, 7); 2036 } 2037 2038 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2039 struct ieee802_11_elems *elems, 2040 u64 filter, u32 crc, u8 *transmitter_bssid, 2041 u8 *bss_bssid); 2042 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 2043 bool action, 2044 struct ieee802_11_elems *elems, 2045 u8 *transmitter_bssid, 2046 u8 *bss_bssid) 2047 { 2048 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 2049 transmitter_bssid, bss_bssid); 2050 } 2051 2052 2053 extern const int ieee802_1d_to_ac[8]; 2054 2055 static inline int ieee80211_ac_from_tid(int tid) 2056 { 2057 return ieee802_1d_to_ac[tid & 7]; 2058 } 2059 2060 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2061 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2062 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2063 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2064 struct ieee80211_sub_if_data *sdata, 2065 bool powersave); 2066 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2067 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2068 2069 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2070 unsigned long queues, 2071 enum queue_stop_reason reason, 2072 bool refcounted); 2073 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2074 struct ieee80211_sub_if_data *sdata, 2075 enum queue_stop_reason reason); 2076 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2077 struct ieee80211_sub_if_data *sdata, 2078 enum queue_stop_reason reason); 2079 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2080 unsigned long queues, 2081 enum queue_stop_reason reason, 2082 bool refcounted); 2083 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2084 enum queue_stop_reason reason, 2085 bool refcounted); 2086 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2087 enum queue_stop_reason reason, 2088 bool refcounted); 2089 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2090 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2091 struct sk_buff *skb); 2092 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2093 struct sk_buff_head *skbs); 2094 void ieee80211_flush_queues(struct ieee80211_local *local, 2095 struct ieee80211_sub_if_data *sdata, bool drop); 2096 void __ieee80211_flush_queues(struct ieee80211_local *local, 2097 struct ieee80211_sub_if_data *sdata, 2098 unsigned int queues, bool drop); 2099 2100 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2101 { 2102 /* 2103 * It's unsafe to try to do any work during reconfigure flow. 2104 * When the flow ends the work will be requeued. 2105 */ 2106 if (local->in_reconfig) 2107 return false; 2108 2109 /* 2110 * If quiescing is set, we are racing with __ieee80211_suspend. 2111 * __ieee80211_suspend flushes the workers after setting quiescing, 2112 * and we check quiescing / suspended before enqueing new workers. 2113 * We should abort the worker to avoid the races below. 2114 */ 2115 if (local->quiescing) 2116 return false; 2117 2118 /* 2119 * We might already be suspended if the following scenario occurs: 2120 * __ieee80211_suspend Control path 2121 * 2122 * if (local->quiescing) 2123 * return; 2124 * local->quiescing = true; 2125 * flush_workqueue(); 2126 * queue_work(...); 2127 * local->suspended = true; 2128 * local->quiescing = false; 2129 * worker starts running... 2130 */ 2131 if (local->suspended) 2132 return false; 2133 2134 return true; 2135 } 2136 2137 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2138 void ieee80211_txq_set_params(struct ieee80211_local *local); 2139 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2140 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2141 struct sta_info *sta, 2142 struct txq_info *txq, int tid); 2143 void ieee80211_txq_purge(struct ieee80211_local *local, 2144 struct txq_info *txqi); 2145 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2146 struct ieee80211_sub_if_data *sdata); 2147 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2148 struct txq_info *txqi); 2149 void ieee80211_wake_txqs(unsigned long data); 2150 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2151 u16 transaction, u16 auth_alg, u16 status, 2152 const u8 *extra, size_t extra_len, const u8 *bssid, 2153 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2154 u32 tx_flags); 2155 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2156 const u8 *da, const u8 *bssid, 2157 u16 stype, u16 reason, 2158 bool send_frame, u8 *frame_buf); 2159 2160 enum { 2161 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2162 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2163 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2164 }; 2165 2166 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2167 size_t buffer_len, 2168 struct ieee80211_scan_ies *ie_desc, 2169 const u8 *ie, size_t ie_len, 2170 u8 bands_used, u32 *rate_masks, 2171 struct cfg80211_chan_def *chandef, 2172 u32 flags); 2173 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2174 const u8 *src, const u8 *dst, 2175 u32 ratemask, 2176 struct ieee80211_channel *chan, 2177 const u8 *ssid, size_t ssid_len, 2178 const u8 *ie, size_t ie_len, 2179 u32 flags); 2180 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2181 struct ieee802_11_elems *elems, 2182 enum nl80211_band band, u32 *basic_rates); 2183 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2184 enum ieee80211_smps_mode smps_mode); 2185 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2186 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2187 2188 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2189 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2190 u16 cap); 2191 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2192 const struct cfg80211_chan_def *chandef, 2193 u16 prot_mode, bool rifs_mode); 2194 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2195 const struct cfg80211_chan_def *chandef); 2196 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2197 u32 cap); 2198 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2199 const struct cfg80211_chan_def *chandef); 2200 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2201 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2202 const struct ieee80211_sta_he_cap *he_cap, 2203 u8 *end); 2204 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2205 struct sk_buff *skb); 2206 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2207 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2208 const struct ieee80211_supported_band *sband, 2209 const u8 *srates, int srates_len, u32 *rates); 2210 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2211 struct sk_buff *skb, bool need_basic, 2212 enum nl80211_band band); 2213 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2214 struct sk_buff *skb, bool need_basic, 2215 enum nl80211_band band); 2216 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2217 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2218 struct ieee80211_sta_s1g_cap *caps, 2219 struct sk_buff *skb); 2220 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2221 struct sk_buff *skb); 2222 2223 /* channel management */ 2224 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2225 struct cfg80211_chan_def *chandef); 2226 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2227 const struct ieee80211_vht_operation *oper, 2228 const struct ieee80211_ht_operation *htop, 2229 struct cfg80211_chan_def *chandef); 2230 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2231 const struct ieee80211_he_operation *he_oper, 2232 struct cfg80211_chan_def *chandef); 2233 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2234 struct cfg80211_chan_def *chandef); 2235 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2236 2237 int __must_check 2238 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2239 const struct cfg80211_chan_def *chandef, 2240 enum ieee80211_chanctx_mode mode); 2241 int __must_check 2242 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2243 const struct cfg80211_chan_def *chandef, 2244 enum ieee80211_chanctx_mode mode, 2245 bool radar_required); 2246 int __must_check 2247 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2248 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2249 2250 int __must_check 2251 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2252 const struct cfg80211_chan_def *chandef, 2253 u32 *changed); 2254 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2255 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2256 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2257 bool clear); 2258 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2259 struct ieee80211_chanctx *ctx); 2260 2261 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2262 struct ieee80211_chanctx *chanctx); 2263 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2264 struct ieee80211_chanctx *ctx); 2265 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2266 2267 void ieee80211_dfs_cac_timer(unsigned long data); 2268 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2269 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2270 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2271 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2272 struct cfg80211_csa_settings *csa_settings); 2273 2274 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2275 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2276 const struct ieee80211_cipher_scheme * 2277 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2278 enum nl80211_iftype iftype); 2279 int ieee80211_cs_headroom(struct ieee80211_local *local, 2280 struct cfg80211_crypto_settings *crypto, 2281 enum nl80211_iftype iftype); 2282 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2283 struct ieee80211_sub_if_data *sdata); 2284 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2285 const struct cfg80211_chan_def *chandef, 2286 enum ieee80211_chanctx_mode chanmode, 2287 u8 radar_detect); 2288 int ieee80211_max_num_channels(struct ieee80211_local *local); 2289 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2290 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2291 struct ieee80211_chanctx *ctx); 2292 2293 /* TDLS */ 2294 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2295 const u8 *peer, u8 action_code, u8 dialog_token, 2296 u16 status_code, u32 peer_capability, 2297 bool initiator, const u8 *extra_ies, 2298 size_t extra_ies_len); 2299 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2300 const u8 *peer, enum nl80211_tdls_operation oper); 2301 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2302 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2303 const u8 *addr, u8 oper_class, 2304 struct cfg80211_chan_def *chandef); 2305 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2306 struct net_device *dev, 2307 const u8 *addr); 2308 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2309 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2310 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2311 const u8 *peer, u16 reason); 2312 const char *ieee80211_get_reason_code_string(u16 reason_code); 2313 u16 ieee80211_encode_usf(int val); 2314 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2315 enum nl80211_iftype type); 2316 2317 extern const struct ethtool_ops ieee80211_ethtool_ops; 2318 2319 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2320 struct ieee80211_vif *vif, 2321 struct ieee80211_sta *pubsta, 2322 int len, bool ampdu); 2323 #ifdef CONFIG_MAC80211_NOINLINE 2324 #define debug_noinline noinline 2325 #else 2326 #define debug_noinline 2327 #endif 2328 2329 #endif /* IEEE80211_I_H */ 2330