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) 2018-2021 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 <linux/rbtree.h> 29 #include <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include <net/fq.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 37 extern const struct cfg80211_ops mac80211_config_ops; 38 39 struct ieee80211_local; 40 41 /* Maximum number of broadcast/multicast frames to buffer when some of the 42 * associated stations are using power saving. */ 43 #define AP_MAX_BC_BUFFER 128 44 45 /* Maximum number of frames buffered to all STAs, including multicast frames. 46 * Note: increasing this limit increases the potential memory requirement. Each 47 * frame can be up to about 2 kB long. */ 48 #define TOTAL_MAX_TX_BUFFER 512 49 50 /* Required encryption head and tailroom */ 51 #define IEEE80211_ENCRYPT_HEADROOM 8 52 #define IEEE80211_ENCRYPT_TAILROOM 18 53 54 /* power level hasn't been configured (or set to automatic) */ 55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 56 57 /* 58 * Some APs experience problems when working with U-APSD. Decreasing the 59 * probability of that happening by using legacy mode for all ACs but VO isn't 60 * enough. 61 * 62 * Cisco 4410N originally forced us to enable VO by default only because it 63 * treated non-VO ACs as legacy. 64 * 65 * However some APs (notably Netgear R7000) silently reclassify packets to 66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 67 * clients would never see some frames (e.g. ARP responses) or would fetch them 68 * accidentally after a long time. 69 * 70 * It makes little sense to enable u-APSD queues by default because it needs 71 * userspace applications to be aware of it to actually take advantage of the 72 * possible additional powersavings. Implicitly depending on driver autotrigger 73 * frame support doesn't make much sense. 74 */ 75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 76 77 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 79 80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 81 82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 83 84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 85 86 struct ieee80211_bss { 87 u32 device_ts_beacon, device_ts_presp; 88 89 bool wmm_used; 90 bool uapsd_supported; 91 92 #define IEEE80211_MAX_SUPP_RATES 32 93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 94 size_t supp_rates_len; 95 struct ieee80211_rate *beacon_rate; 96 97 u32 vht_cap_info; 98 99 /* 100 * During association, we save an ERP value from a probe response so 101 * that we can feed ERP info to the driver when handling the 102 * association completes. these fields probably won't be up-to-date 103 * otherwise, you probably don't want to use them. 104 */ 105 bool has_erp_value; 106 u8 erp_value; 107 108 /* Keep track of the corruption of the last beacon/probe response. */ 109 u8 corrupt_data; 110 111 /* Keep track of what bits of information we have valid info for. */ 112 u8 valid_data; 113 }; 114 115 /** 116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 119 * 120 * These are bss flags that are attached to a bss in the 121 * @corrupt_data field of &struct ieee80211_bss. 122 */ 123 enum ieee80211_bss_corrupt_data_flags { 124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 126 }; 127 128 /** 129 * enum ieee80211_valid_data_flags - BSS valid data flags 130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 133 * 134 * These are bss flags that are attached to a bss in the 135 * @valid_data field of &struct ieee80211_bss. They show which parts 136 * of the data structure were received as a result of an un-corrupted 137 * beacon/probe response. 138 */ 139 enum ieee80211_bss_valid_data_flags { 140 IEEE80211_BSS_VALID_WMM = BIT(1), 141 IEEE80211_BSS_VALID_RATES = BIT(2), 142 IEEE80211_BSS_VALID_ERP = BIT(3) 143 }; 144 145 typedef unsigned __bitwise ieee80211_tx_result; 146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 147 #define TX_DROP ((__force ieee80211_tx_result) 1u) 148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 149 150 #define IEEE80211_TX_UNICAST BIT(1) 151 #define IEEE80211_TX_PS_BUFFERED BIT(2) 152 153 struct ieee80211_tx_data { 154 struct sk_buff *skb; 155 struct sk_buff_head skbs; 156 struct ieee80211_local *local; 157 struct ieee80211_sub_if_data *sdata; 158 struct sta_info *sta; 159 struct ieee80211_key *key; 160 struct ieee80211_tx_rate rate; 161 162 unsigned int flags; 163 }; 164 165 166 typedef unsigned __bitwise ieee80211_rx_result; 167 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 168 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 169 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 170 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 171 172 /** 173 * enum ieee80211_packet_rx_flags - packet RX flags 174 * @IEEE80211_RX_AMSDU: a-MSDU packet 175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 177 * 178 * These are per-frame flags that are attached to a frame in the 179 * @rx_flags field of &struct ieee80211_rx_status. 180 */ 181 enum ieee80211_packet_rx_flags { 182 IEEE80211_RX_AMSDU = BIT(3), 183 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 184 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 185 }; 186 187 /** 188 * enum ieee80211_rx_flags - RX data flags 189 * 190 * @IEEE80211_RX_CMNTR: received on cooked monitor already 191 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 192 * to cfg80211_report_obss_beacon(). 193 * 194 * These flags are used across handling multiple interfaces 195 * for a single frame. 196 */ 197 enum ieee80211_rx_flags { 198 IEEE80211_RX_CMNTR = BIT(0), 199 IEEE80211_RX_BEACON_REPORTED = BIT(1), 200 }; 201 202 struct ieee80211_rx_data { 203 struct list_head *list; 204 struct sk_buff *skb; 205 struct ieee80211_local *local; 206 struct ieee80211_sub_if_data *sdata; 207 struct sta_info *sta; 208 struct ieee80211_key *key; 209 210 unsigned int flags; 211 212 /* 213 * Index into sequence numbers array, 0..16 214 * since the last (16) is used for non-QoS, 215 * will be 16 on non-QoS frames. 216 */ 217 int seqno_idx; 218 219 /* 220 * Index into the security IV/PN arrays, 0..16 221 * since the last (16) is used for CCMP-encrypted 222 * management frames, will be set to 16 on mgmt 223 * frames and 0 on non-QoS frames. 224 */ 225 int security_idx; 226 227 union { 228 struct { 229 u32 iv32; 230 u16 iv16; 231 } tkip; 232 struct { 233 u8 pn[IEEE80211_CCMP_PN_LEN]; 234 } ccm_gcm; 235 }; 236 }; 237 238 struct ieee80211_csa_settings { 239 const u16 *counter_offsets_beacon; 240 const u16 *counter_offsets_presp; 241 242 int n_counter_offsets_beacon; 243 int n_counter_offsets_presp; 244 245 u8 count; 246 }; 247 248 struct ieee80211_color_change_settings { 249 u16 counter_offset_beacon; 250 u16 counter_offset_presp; 251 u8 count; 252 }; 253 254 struct beacon_data { 255 u8 *head, *tail; 256 int head_len, tail_len; 257 struct ieee80211_meshconf_ie *meshconf; 258 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 259 u8 cntdwn_current_counter; 260 struct rcu_head rcu_head; 261 }; 262 263 struct probe_resp { 264 struct rcu_head rcu_head; 265 int len; 266 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM]; 267 u8 data[]; 268 }; 269 270 struct fils_discovery_data { 271 struct rcu_head rcu_head; 272 int len; 273 u8 data[]; 274 }; 275 276 struct unsol_bcast_probe_resp_data { 277 struct rcu_head rcu_head; 278 int len; 279 u8 data[]; 280 }; 281 282 struct ps_data { 283 /* yes, this looks ugly, but guarantees that we can later use 284 * bitmap_empty :) 285 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 286 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 287 __aligned(__alignof__(unsigned long)); 288 struct sk_buff_head bc_buf; 289 atomic_t num_sta_ps; /* number of stations in PS mode */ 290 int dtim_count; 291 bool dtim_bc_mc; 292 }; 293 294 struct ieee80211_if_ap { 295 struct beacon_data __rcu *beacon; 296 struct probe_resp __rcu *probe_resp; 297 struct fils_discovery_data __rcu *fils_discovery; 298 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp; 299 300 /* to be used after channel switch. */ 301 struct cfg80211_beacon_data *next_beacon; 302 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 303 304 struct ps_data ps; 305 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 306 307 bool multicast_to_unicast; 308 }; 309 310 struct ieee80211_if_vlan { 311 struct list_head list; /* write-protected with RTNL and local->mtx */ 312 313 /* used for all tx if the VLAN is configured to 4-addr mode */ 314 struct sta_info __rcu *sta; 315 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 316 }; 317 318 struct mesh_stats { 319 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 320 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 321 __u32 fwded_frames; /* Mesh total forwarded frames */ 322 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 323 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 324 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 325 }; 326 327 #define PREQ_Q_F_START 0x1 328 #define PREQ_Q_F_REFRESH 0x2 329 struct mesh_preq_queue { 330 struct list_head list; 331 u8 dst[ETH_ALEN]; 332 u8 flags; 333 }; 334 335 struct ieee80211_roc_work { 336 struct list_head list; 337 338 struct ieee80211_sub_if_data *sdata; 339 340 struct ieee80211_channel *chan; 341 342 bool started, abort, hw_begun, notified; 343 bool on_channel; 344 345 unsigned long start_time; 346 347 u32 duration, req_duration; 348 struct sk_buff *frame; 349 u64 cookie, mgmt_tx_cookie; 350 enum ieee80211_roc_type type; 351 }; 352 353 /* flags used in struct ieee80211_if_managed.flags */ 354 enum ieee80211_sta_flags { 355 IEEE80211_STA_CONNECTION_POLL = BIT(1), 356 IEEE80211_STA_CONTROL_PORT = BIT(2), 357 IEEE80211_STA_DISABLE_HT = BIT(4), 358 IEEE80211_STA_MFP_ENABLED = BIT(6), 359 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 361 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 362 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 363 IEEE80211_STA_DISABLE_VHT = BIT(11), 364 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 365 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 366 IEEE80211_STA_DISABLE_WMM = BIT(14), 367 IEEE80211_STA_ENABLE_RRM = BIT(15), 368 IEEE80211_STA_DISABLE_HE = BIT(16), 369 }; 370 371 struct ieee80211_mgd_auth_data { 372 struct cfg80211_bss *bss; 373 unsigned long timeout; 374 int tries; 375 u16 algorithm, expected_transaction; 376 377 u8 key[WLAN_KEY_LEN_WEP104]; 378 u8 key_len, key_idx; 379 bool done; 380 bool peer_confirmed; 381 bool timeout_started; 382 383 u16 sae_trans, sae_status; 384 size_t data_len; 385 u8 data[]; 386 }; 387 388 struct ieee80211_mgd_assoc_data { 389 struct cfg80211_bss *bss; 390 const u8 *supp_rates; 391 392 unsigned long timeout; 393 int tries; 394 395 u16 capability; 396 u8 prev_bssid[ETH_ALEN]; 397 u8 ssid[IEEE80211_MAX_SSID_LEN]; 398 u8 ssid_len; 399 u8 supp_rates_len; 400 bool wmm, uapsd; 401 bool need_beacon; 402 bool synced; 403 bool timeout_started; 404 405 u8 ap_ht_param; 406 407 struct ieee80211_vht_cap ap_vht_cap; 408 409 u8 fils_nonces[2 * FILS_NONCE_LEN]; 410 u8 fils_kek[FILS_MAX_KEK_LEN]; 411 size_t fils_kek_len; 412 413 size_t ie_len; 414 u8 ie[]; 415 }; 416 417 struct ieee80211_sta_tx_tspec { 418 /* timestamp of the first packet in the time slice */ 419 unsigned long time_slice_start; 420 421 u32 admitted_time; /* in usecs, unlike over the air */ 422 u8 tsid; 423 s8 up; /* signed to be able to invalidate with -1 during teardown */ 424 425 /* consumed TX time in microseconds in the time slice */ 426 u32 consumed_tx_time; 427 enum { 428 TX_TSPEC_ACTION_NONE = 0, 429 TX_TSPEC_ACTION_DOWNGRADE, 430 TX_TSPEC_ACTION_STOP_DOWNGRADE, 431 } action; 432 bool downgraded; 433 }; 434 435 DECLARE_EWMA(beacon_signal, 4, 4) 436 437 struct ieee80211_if_managed { 438 struct timer_list timer; 439 struct timer_list conn_mon_timer; 440 struct timer_list bcn_mon_timer; 441 struct timer_list chswitch_timer; 442 struct work_struct monitor_work; 443 struct work_struct chswitch_work; 444 struct work_struct beacon_connection_loss_work; 445 struct work_struct csa_connection_drop_work; 446 447 unsigned long beacon_timeout; 448 unsigned long probe_timeout; 449 int probe_send_count; 450 bool nullfunc_failed; 451 u8 connection_loss:1, 452 driver_disconnect:1, 453 reconnect:1; 454 455 struct cfg80211_bss *associated; 456 struct ieee80211_mgd_auth_data *auth_data; 457 struct ieee80211_mgd_assoc_data *assoc_data; 458 459 u8 bssid[ETH_ALEN] __aligned(2); 460 461 bool powersave; /* powersave requested for this iface */ 462 bool broken_ap; /* AP is broken -- turn off powersave */ 463 bool have_beacon; 464 u8 dtim_period; 465 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 466 driver_smps_mode; /* smps mode request */ 467 468 struct work_struct request_smps_work; 469 470 unsigned int flags; 471 472 bool csa_waiting_bcn; 473 bool csa_ignored_same_chan; 474 475 bool beacon_crc_valid; 476 u32 beacon_crc; 477 478 bool status_acked; 479 bool status_received; 480 __le16 status_fc; 481 482 enum { 483 IEEE80211_MFP_DISABLED, 484 IEEE80211_MFP_OPTIONAL, 485 IEEE80211_MFP_REQUIRED 486 } mfp; /* management frame protection */ 487 488 /* 489 * Bitmask of enabled u-apsd queues, 490 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 491 * to take effect. 492 */ 493 unsigned int uapsd_queues; 494 495 /* 496 * Maximum number of buffered frames AP can deliver during a 497 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 498 * Needs a new association to take effect. 499 */ 500 unsigned int uapsd_max_sp_len; 501 502 int wmm_last_param_set; 503 int mu_edca_last_param_set; 504 505 u8 use_4addr; 506 507 s16 p2p_noa_index; 508 509 struct ewma_beacon_signal ave_beacon_signal; 510 511 /* 512 * Number of Beacon frames used in ave_beacon_signal. This can be used 513 * to avoid generating less reliable cqm events that would be based 514 * only on couple of received frames. 515 */ 516 unsigned int count_beacon_signal; 517 518 /* Number of times beacon loss was invoked. */ 519 unsigned int beacon_loss_count; 520 521 /* 522 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 523 * that triggered a cqm event. 0 indicates that no event has been 524 * generated for the current association. 525 */ 526 int last_cqm_event_signal; 527 528 /* 529 * State variables for keeping track of RSSI of the AP currently 530 * connected to and informing driver when RSSI has gone 531 * below/above a certain threshold. 532 */ 533 int rssi_min_thold, rssi_max_thold; 534 int last_ave_beacon_signal; 535 536 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 537 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 538 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 539 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 540 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */ 541 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */ 542 543 /* TDLS support */ 544 u8 tdls_peer[ETH_ALEN] __aligned(2); 545 struct delayed_work tdls_peer_del_work; 546 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 547 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 548 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 549 bool tdls_chan_switch_prohibited; 550 bool tdls_wider_bw_prohibited; 551 552 /* WMM-AC TSPEC support */ 553 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 554 /* Use a separate work struct so that we can do something here 555 * while the sdata->work is flushing the queues, for example. 556 * otherwise, in scenarios where we hardly get any traffic out 557 * on the BE queue, but there's a lot of VO traffic, we might 558 * get stuck in a downgraded situation and flush takes forever. 559 */ 560 struct delayed_work tx_tspec_wk; 561 562 /* Information elements from the last transmitted (Re)Association 563 * Request frame. 564 */ 565 u8 *assoc_req_ies; 566 size_t assoc_req_ies_len; 567 }; 568 569 struct ieee80211_if_ibss { 570 struct timer_list timer; 571 struct work_struct csa_connection_drop_work; 572 573 unsigned long last_scan_completed; 574 575 u32 basic_rates; 576 577 bool fixed_bssid; 578 bool fixed_channel; 579 bool privacy; 580 581 bool control_port; 582 bool userspace_handles_dfs; 583 584 u8 bssid[ETH_ALEN] __aligned(2); 585 u8 ssid[IEEE80211_MAX_SSID_LEN]; 586 u8 ssid_len, ie_len; 587 u8 *ie; 588 struct cfg80211_chan_def chandef; 589 590 unsigned long ibss_join_req; 591 /* probe response/beacon for IBSS */ 592 struct beacon_data __rcu *presp; 593 594 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 595 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 596 597 spinlock_t incomplete_lock; 598 struct list_head incomplete_stations; 599 600 enum { 601 IEEE80211_IBSS_MLME_SEARCH, 602 IEEE80211_IBSS_MLME_JOINED, 603 } state; 604 }; 605 606 /** 607 * struct ieee80211_if_ocb - OCB mode state 608 * 609 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 610 * @wrkq_flags: OCB deferred task action 611 * @incomplete_lock: delayed STA insertion lock 612 * @incomplete_stations: list of STAs waiting for delayed insertion 613 * @joined: indication if the interface is connected to an OCB network 614 */ 615 struct ieee80211_if_ocb { 616 struct timer_list housekeeping_timer; 617 unsigned long wrkq_flags; 618 619 spinlock_t incomplete_lock; 620 struct list_head incomplete_stations; 621 622 bool joined; 623 }; 624 625 /** 626 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 627 * 628 * these declarations define the interface, which enables 629 * vendor-specific mesh synchronization 630 * 631 */ 632 struct ieee802_11_elems; 633 struct ieee80211_mesh_sync_ops { 634 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 635 u16 stype, 636 struct ieee80211_mgmt *mgmt, 637 struct ieee802_11_elems *elems, 638 struct ieee80211_rx_status *rx_status); 639 640 /* should be called with beacon_data under RCU read lock */ 641 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 642 struct beacon_data *beacon); 643 /* add other framework functions here */ 644 }; 645 646 struct mesh_csa_settings { 647 struct rcu_head rcu_head; 648 struct cfg80211_csa_settings settings; 649 }; 650 651 struct ieee80211_if_mesh { 652 struct timer_list housekeeping_timer; 653 struct timer_list mesh_path_timer; 654 struct timer_list mesh_path_root_timer; 655 656 unsigned long wrkq_flags; 657 unsigned long mbss_changed; 658 659 bool userspace_handles_dfs; 660 661 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 662 size_t mesh_id_len; 663 /* Active Path Selection Protocol Identifier */ 664 u8 mesh_pp_id; 665 /* Active Path Selection Metric Identifier */ 666 u8 mesh_pm_id; 667 /* Congestion Control Mode Identifier */ 668 u8 mesh_cc_id; 669 /* Synchronization Protocol Identifier */ 670 u8 mesh_sp_id; 671 /* Authentication Protocol Identifier */ 672 u8 mesh_auth_id; 673 /* Local mesh Sequence Number */ 674 u32 sn; 675 /* Last used PREQ ID */ 676 u32 preq_id; 677 atomic_t mpaths; 678 /* Timestamp of last SN update */ 679 unsigned long last_sn_update; 680 /* Time when it's ok to send next PERR */ 681 unsigned long next_perr; 682 /* Timestamp of last PREQ sent */ 683 unsigned long last_preq; 684 struct mesh_rmc *rmc; 685 spinlock_t mesh_preq_queue_lock; 686 struct mesh_preq_queue preq_queue; 687 int preq_queue_len; 688 struct mesh_stats mshstats; 689 struct mesh_config mshcfg; 690 atomic_t estab_plinks; 691 u32 mesh_seqnum; 692 bool accepting_plinks; 693 int num_gates; 694 struct beacon_data __rcu *beacon; 695 const u8 *ie; 696 u8 ie_len; 697 enum { 698 IEEE80211_MESH_SEC_NONE = 0x0, 699 IEEE80211_MESH_SEC_AUTHED = 0x1, 700 IEEE80211_MESH_SEC_SECURED = 0x2, 701 } security; 702 bool user_mpm; 703 /* Extensible Synchronization Framework */ 704 const struct ieee80211_mesh_sync_ops *sync_ops; 705 s64 sync_offset_clockdrift_max; 706 spinlock_t sync_offset_lock; 707 /* mesh power save */ 708 enum nl80211_mesh_power_mode nonpeer_pm; 709 int ps_peers_light_sleep; 710 int ps_peers_deep_sleep; 711 struct ps_data ps; 712 /* Channel Switching Support */ 713 struct mesh_csa_settings __rcu *csa; 714 enum { 715 IEEE80211_MESH_CSA_ROLE_NONE, 716 IEEE80211_MESH_CSA_ROLE_INIT, 717 IEEE80211_MESH_CSA_ROLE_REPEATER, 718 } csa_role; 719 u8 chsw_ttl; 720 u16 pre_value; 721 722 /* offset from skb->data while building IE */ 723 int meshconf_offset; 724 725 struct mesh_table *mesh_paths; 726 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 727 int mesh_paths_generation; 728 int mpp_paths_generation; 729 }; 730 731 #ifdef CONFIG_MAC80211_MESH 732 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 733 do { (msh)->mshstats.name++; } while (0) 734 #else 735 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 736 do { } while (0) 737 #endif 738 739 /** 740 * enum ieee80211_sub_if_data_flags - virtual interface flags 741 * 742 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 743 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 744 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 745 * associated stations and deliver multicast frames both 746 * back to wireless media and to the local net stack. 747 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 748 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 749 */ 750 enum ieee80211_sub_if_data_flags { 751 IEEE80211_SDATA_ALLMULTI = BIT(0), 752 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 753 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 754 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 755 IEEE80211_SDATA_IN_DRIVER = BIT(5), 756 }; 757 758 /** 759 * enum ieee80211_sdata_state_bits - virtual interface state bits 760 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 761 * mirrors netif_running() but is separate for interface type 762 * change handling while the interface is up 763 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 764 * mode, so queues are stopped 765 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 766 * to offchannel, reset when offchannel returns 767 */ 768 enum ieee80211_sdata_state_bits { 769 SDATA_STATE_RUNNING, 770 SDATA_STATE_OFFCHANNEL, 771 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 772 }; 773 774 /** 775 * enum ieee80211_chanctx_mode - channel context configuration mode 776 * 777 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 778 * multiple interfaces 779 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 780 * only by a single interface. This can be used for example for 781 * non-fixed channel IBSS. 782 */ 783 enum ieee80211_chanctx_mode { 784 IEEE80211_CHANCTX_SHARED, 785 IEEE80211_CHANCTX_EXCLUSIVE 786 }; 787 788 /** 789 * enum ieee80211_chanctx_replace_state - channel context replacement state 790 * 791 * This is used for channel context in-place reservations that require channel 792 * context switch/swap. 793 * 794 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 795 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 796 * by a (not yet registered) channel context pointed by %replace_ctx. 797 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 798 * replaces an existing channel context pointed to by %replace_ctx. 799 */ 800 enum ieee80211_chanctx_replace_state { 801 IEEE80211_CHANCTX_REPLACE_NONE, 802 IEEE80211_CHANCTX_WILL_BE_REPLACED, 803 IEEE80211_CHANCTX_REPLACES_OTHER, 804 }; 805 806 struct ieee80211_chanctx { 807 struct list_head list; 808 struct rcu_head rcu_head; 809 810 struct list_head assigned_vifs; 811 struct list_head reserved_vifs; 812 813 enum ieee80211_chanctx_replace_state replace_state; 814 struct ieee80211_chanctx *replace_ctx; 815 816 enum ieee80211_chanctx_mode mode; 817 bool driver_present; 818 819 struct ieee80211_chanctx_conf conf; 820 }; 821 822 struct mac80211_qos_map { 823 struct cfg80211_qos_map qos_map; 824 struct rcu_head rcu_head; 825 }; 826 827 enum txq_info_flags { 828 IEEE80211_TXQ_STOP, 829 IEEE80211_TXQ_AMPDU, 830 IEEE80211_TXQ_NO_AMSDU, 831 IEEE80211_TXQ_STOP_NETIF_TX, 832 }; 833 834 /** 835 * struct txq_info - per tid queue 836 * 837 * @tin: contains packets split into multiple flows 838 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 839 * a fq_flow which is already owned by a different tin 840 * @def_cvars: codel vars for @def_flow 841 * @schedule_order: used with ieee80211_local->active_txqs 842 * @frags: used to keep fragments created after dequeue 843 */ 844 struct txq_info { 845 struct fq_tin tin; 846 struct codel_vars def_cvars; 847 struct codel_stats cstats; 848 struct rb_node schedule_order; 849 850 struct sk_buff_head frags; 851 unsigned long flags; 852 853 /* keep last! */ 854 struct ieee80211_txq txq; 855 }; 856 857 struct ieee80211_if_mntr { 858 u32 flags; 859 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 860 861 struct list_head list; 862 }; 863 864 /** 865 * struct ieee80211_if_nan - NAN state 866 * 867 * @conf: current NAN configuration 868 * @func_ids: a bitmap of available instance_id's 869 */ 870 struct ieee80211_if_nan { 871 struct cfg80211_nan_conf conf; 872 873 /* protects function_inst_ids */ 874 spinlock_t func_lock; 875 struct idr function_inst_ids; 876 }; 877 878 struct ieee80211_sub_if_data { 879 struct list_head list; 880 881 struct wireless_dev wdev; 882 883 /* keys */ 884 struct list_head key_list; 885 886 /* count for keys needing tailroom space allocation */ 887 int crypto_tx_tailroom_needed_cnt; 888 int crypto_tx_tailroom_pending_dec; 889 struct delayed_work dec_tailroom_needed_wk; 890 891 struct net_device *dev; 892 struct ieee80211_local *local; 893 894 unsigned int flags; 895 896 unsigned long state; 897 898 char name[IFNAMSIZ]; 899 900 struct ieee80211_fragment_cache frags; 901 902 /* TID bitmap for NoAck policy */ 903 u16 noack_map; 904 905 /* bit field of ACM bits (BIT(802.1D tag)) */ 906 u8 wmm_acm; 907 908 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + 909 NUM_DEFAULT_MGMT_KEYS + 910 NUM_DEFAULT_BEACON_KEYS]; 911 struct ieee80211_key __rcu *default_unicast_key; 912 struct ieee80211_key __rcu *default_multicast_key; 913 struct ieee80211_key __rcu *default_mgmt_key; 914 struct ieee80211_key __rcu *default_beacon_key; 915 916 u16 sequence_number; 917 __be16 control_port_protocol; 918 bool control_port_no_encrypt; 919 bool control_port_no_preauth; 920 bool control_port_over_nl80211; 921 int encrypt_headroom; 922 923 atomic_t num_tx_queued; 924 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 925 struct mac80211_qos_map __rcu *qos_map; 926 927 struct airtime_info airtime[IEEE80211_NUM_ACS]; 928 929 struct work_struct csa_finalize_work; 930 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 931 struct cfg80211_chan_def csa_chandef; 932 933 struct work_struct color_change_finalize_work; 934 935 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 936 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 937 938 /* context reservation -- protected with chanctx_mtx */ 939 struct ieee80211_chanctx *reserved_chanctx; 940 struct cfg80211_chan_def reserved_chandef; 941 bool reserved_radar_required; 942 bool reserved_ready; 943 944 /* used to reconfigure hardware SM PS */ 945 struct work_struct recalc_smps; 946 947 struct work_struct work; 948 struct sk_buff_head skb_queue; 949 struct sk_buff_head status_queue; 950 951 u8 needed_rx_chains; 952 enum ieee80211_smps_mode smps_mode; 953 954 int user_power_level; /* in dBm */ 955 int ap_power_level; /* in dBm */ 956 957 bool radar_required; 958 struct delayed_work dfs_cac_timer_work; 959 960 /* 961 * AP this belongs to: self in AP mode and 962 * corresponding AP in VLAN mode, NULL for 963 * all others (might be needed later in IBSS) 964 */ 965 struct ieee80211_if_ap *bss; 966 967 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 968 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 969 970 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 971 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 972 973 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 974 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 975 976 /* Beacon frame (non-MCS) rate (as a bitmap) */ 977 u32 beacon_rateidx_mask[NUM_NL80211_BANDS]; 978 bool beacon_rate_set; 979 980 union { 981 struct ieee80211_if_ap ap; 982 struct ieee80211_if_vlan vlan; 983 struct ieee80211_if_managed mgd; 984 struct ieee80211_if_ibss ibss; 985 struct ieee80211_if_mesh mesh; 986 struct ieee80211_if_ocb ocb; 987 struct ieee80211_if_mntr mntr; 988 struct ieee80211_if_nan nan; 989 } u; 990 991 #ifdef CONFIG_MAC80211_DEBUGFS 992 struct { 993 struct dentry *subdir_stations; 994 struct dentry *default_unicast_key; 995 struct dentry *default_multicast_key; 996 struct dentry *default_mgmt_key; 997 struct dentry *default_beacon_key; 998 } debugfs; 999 #endif 1000 1001 /* must be last, dynamically sized area in this! */ 1002 struct ieee80211_vif vif; 1003 }; 1004 1005 static inline 1006 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 1007 { 1008 return container_of(p, struct ieee80211_sub_if_data, vif); 1009 } 1010 1011 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1012 __acquires(&sdata->wdev.mtx) 1013 { 1014 mutex_lock(&sdata->wdev.mtx); 1015 __acquire(&sdata->wdev.mtx); 1016 } 1017 1018 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1019 __releases(&sdata->wdev.mtx) 1020 { 1021 mutex_unlock(&sdata->wdev.mtx); 1022 __release(&sdata->wdev.mtx); 1023 } 1024 1025 #define sdata_dereference(p, sdata) \ 1026 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1027 1028 static inline void 1029 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1030 { 1031 lockdep_assert_held(&sdata->wdev.mtx); 1032 } 1033 1034 static inline int 1035 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1036 { 1037 switch (chandef->width) { 1038 case NL80211_CHAN_WIDTH_5: 1039 return 2; 1040 case NL80211_CHAN_WIDTH_10: 1041 return 1; 1042 default: 1043 return 0; 1044 } 1045 } 1046 1047 static inline int 1048 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1049 { 1050 struct ieee80211_chanctx_conf *chanctx_conf; 1051 int shift = 0; 1052 1053 rcu_read_lock(); 1054 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1055 if (chanctx_conf) 1056 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1057 rcu_read_unlock(); 1058 1059 return shift; 1060 } 1061 1062 enum { 1063 IEEE80211_RX_MSG = 1, 1064 IEEE80211_TX_STATUS_MSG = 2, 1065 }; 1066 1067 enum queue_stop_reason { 1068 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1069 IEEE80211_QUEUE_STOP_REASON_PS, 1070 IEEE80211_QUEUE_STOP_REASON_CSA, 1071 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1072 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1073 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1074 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1075 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1076 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1077 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1078 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE, 1079 1080 IEEE80211_QUEUE_STOP_REASONS, 1081 }; 1082 1083 #ifdef CONFIG_MAC80211_LEDS 1084 struct tpt_led_trigger { 1085 char name[32]; 1086 const struct ieee80211_tpt_blink *blink_table; 1087 unsigned int blink_table_len; 1088 struct timer_list timer; 1089 struct ieee80211_local *local; 1090 unsigned long prev_traffic; 1091 unsigned long tx_bytes, rx_bytes; 1092 unsigned int active, want; 1093 bool running; 1094 }; 1095 #endif 1096 1097 /** 1098 * mac80211 scan flags - currently active scan mode 1099 * 1100 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1101 * well be on the operating channel 1102 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1103 * determine if we are on the operating channel or not 1104 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1105 * channel. This should not interrupt normal traffic. 1106 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1107 * that the scan completed. 1108 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1109 * a scan complete for an aborted scan. 1110 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1111 * cancelled. 1112 */ 1113 enum { 1114 SCAN_SW_SCANNING, 1115 SCAN_HW_SCANNING, 1116 SCAN_ONCHANNEL_SCANNING, 1117 SCAN_COMPLETED, 1118 SCAN_ABORTED, 1119 SCAN_HW_CANCELLED, 1120 }; 1121 1122 /** 1123 * enum mac80211_scan_state - scan state machine states 1124 * 1125 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1126 * determines if we should keep on scanning or switch back to the 1127 * operating channel 1128 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1129 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1130 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1131 * send out data 1132 * @SCAN_RESUME: Resume the scan and scan the next channel 1133 * @SCAN_ABORT: Abort the scan and go back to operating channel 1134 */ 1135 enum mac80211_scan_state { 1136 SCAN_DECISION, 1137 SCAN_SET_CHANNEL, 1138 SCAN_SEND_PROBE, 1139 SCAN_SUSPEND, 1140 SCAN_RESUME, 1141 SCAN_ABORT, 1142 }; 1143 1144 /** 1145 * struct airtime_sched_info - state used for airtime scheduling and AQL 1146 * 1147 * @lock: spinlock that protects all the fields in this struct 1148 * @active_txqs: rbtree of currently backlogged queues, sorted by virtual time 1149 * @schedule_pos: the current position maintained while a driver walks the tree 1150 * with ieee80211_next_txq() 1151 * @active_list: list of struct airtime_info structs that were active within 1152 * the last AIRTIME_ACTIVE_DURATION (100 ms), used to compute 1153 * weight_sum 1154 * @last_weight_update: used for rate limiting walking active_list 1155 * @last_schedule_time: tracks the last time a transmission was scheduled; used 1156 * for catching up v_t if no stations are eligible for 1157 * transmission. 1158 * @v_t: global virtual time; queues with v_t < this are eligible for 1159 * transmission 1160 * @weight_sum: total sum of all active stations used for dividing airtime 1161 * @weight_sum_reciprocal: reciprocal of weight_sum (to avoid divisions in fast 1162 * path - see comment above 1163 * IEEE80211_RECIPROCAL_DIVISOR_64) 1164 * @aql_txq_limit_low: AQL limit when total outstanding airtime 1165 * is < IEEE80211_AQL_THRESHOLD 1166 * @aql_txq_limit_high: AQL limit when total outstanding airtime 1167 * is > IEEE80211_AQL_THRESHOLD 1168 */ 1169 struct airtime_sched_info { 1170 spinlock_t lock; 1171 struct rb_root_cached active_txqs; 1172 struct rb_node *schedule_pos; 1173 struct list_head active_list; 1174 u64 last_weight_update; 1175 u64 last_schedule_activity; 1176 u64 v_t; 1177 u64 weight_sum; 1178 u64 weight_sum_reciprocal; 1179 u32 aql_txq_limit_low; 1180 u32 aql_txq_limit_high; 1181 }; 1182 DECLARE_STATIC_KEY_FALSE(aql_disable); 1183 1184 struct ieee80211_local { 1185 /* embed the driver visible part. 1186 * don't cast (use the static inlines below), but we keep 1187 * it first anyway so they become a no-op */ 1188 struct ieee80211_hw hw; 1189 1190 struct fq fq; 1191 struct codel_vars *cvars; 1192 struct codel_params cparams; 1193 1194 /* protects active_txqs and txqi->schedule_order */ 1195 struct airtime_sched_info airtime[IEEE80211_NUM_ACS]; 1196 u16 airtime_flags; 1197 u32 aql_threshold; 1198 atomic_t aql_total_pending_airtime; 1199 1200 const struct ieee80211_ops *ops; 1201 1202 /* 1203 * private workqueue to mac80211. mac80211 makes this accessible 1204 * via ieee80211_queue_work() 1205 */ 1206 struct workqueue_struct *workqueue; 1207 1208 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1209 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1210 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1211 spinlock_t queue_stop_reason_lock; 1212 1213 int open_count; 1214 int monitors, cooked_mntrs; 1215 /* number of interfaces with corresponding FIF_ flags */ 1216 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1217 fif_probe_req; 1218 bool probe_req_reg; 1219 bool rx_mcast_action_reg; 1220 unsigned int filter_flags; /* FIF_* */ 1221 1222 bool wiphy_ciphers_allocated; 1223 1224 bool use_chanctx; 1225 1226 /* protects the aggregated multicast list and filter calls */ 1227 spinlock_t filter_lock; 1228 1229 /* used for uploading changed mc list */ 1230 struct work_struct reconfig_filter; 1231 1232 /* aggregated multicast list */ 1233 struct netdev_hw_addr_list mc_list; 1234 1235 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1236 1237 /* 1238 * suspended is true if we finished all the suspend _and_ we have 1239 * not yet come up from resume. This is to be used by mac80211 1240 * to ensure driver sanity during suspend and mac80211's own 1241 * sanity. It can eventually be used for WoW as well. 1242 */ 1243 bool suspended; 1244 1245 /* 1246 * Resuming is true while suspended, but when we're reprogramming the 1247 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1248 * again even though some other parts of the stack are still suspended 1249 * and we still drop received frames to avoid waking the stack. 1250 */ 1251 bool resuming; 1252 1253 /* 1254 * quiescing is true during the suspend process _only_ to 1255 * ease timer cancelling etc. 1256 */ 1257 bool quiescing; 1258 1259 /* device is started */ 1260 bool started; 1261 1262 /* device is during a HW reconfig */ 1263 bool in_reconfig; 1264 1265 /* wowlan is enabled -- don't reconfig on resume */ 1266 bool wowlan; 1267 1268 struct work_struct radar_detected_work; 1269 1270 /* number of RX chains the hardware has */ 1271 u8 rx_chains; 1272 1273 /* bitmap of which sbands were copied */ 1274 u8 sband_allocated; 1275 1276 int tx_headroom; /* required headroom for hardware/radiotap */ 1277 1278 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1279 * added to skb_queue will be processed, but frames in 1280 * skb_queue_unreliable may be dropped if the total length of these 1281 * queues increases over the limit. */ 1282 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1283 struct tasklet_struct tasklet; 1284 struct sk_buff_head skb_queue; 1285 struct sk_buff_head skb_queue_unreliable; 1286 1287 spinlock_t rx_path_lock; 1288 1289 /* Station data */ 1290 /* 1291 * The mutex only protects the list, hash table and 1292 * counter, reads are done with RCU. 1293 */ 1294 struct mutex sta_mtx; 1295 spinlock_t tim_lock; 1296 unsigned long num_sta; 1297 struct list_head sta_list; 1298 struct rhltable sta_hash; 1299 struct timer_list sta_cleanup; 1300 int sta_generation; 1301 1302 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1303 struct tasklet_struct tx_pending_tasklet; 1304 struct tasklet_struct wake_txqs_tasklet; 1305 1306 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1307 1308 /* number of interfaces with allmulti RX */ 1309 atomic_t iff_allmultis; 1310 1311 struct rate_control_ref *rate_ctrl; 1312 1313 struct arc4_ctx wep_tx_ctx; 1314 struct arc4_ctx wep_rx_ctx; 1315 u32 wep_iv; 1316 1317 /* see iface.c */ 1318 struct list_head interfaces; 1319 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1320 struct mutex iflist_mtx; 1321 1322 /* 1323 * Key mutex, protects sdata's key_list and sta_info's 1324 * key pointers and ptk_idx (write access, they're RCU.) 1325 */ 1326 struct mutex key_mtx; 1327 1328 /* mutex for scan and work locking */ 1329 struct mutex mtx; 1330 1331 /* Scanning and BSS list */ 1332 unsigned long scanning; 1333 struct cfg80211_ssid scan_ssid; 1334 struct cfg80211_scan_request *int_scan_req; 1335 struct cfg80211_scan_request __rcu *scan_req; 1336 struct ieee80211_scan_request *hw_scan_req; 1337 struct cfg80211_chan_def scan_chandef; 1338 enum nl80211_band hw_scan_band; 1339 int scan_channel_idx; 1340 int scan_ies_len; 1341 int hw_scan_ies_bufsize; 1342 struct cfg80211_scan_info scan_info; 1343 1344 struct work_struct sched_scan_stopped_work; 1345 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1346 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1347 u8 scan_addr[ETH_ALEN]; 1348 1349 unsigned long leave_oper_channel_time; 1350 enum mac80211_scan_state next_scan_state; 1351 struct delayed_work scan_work; 1352 struct ieee80211_sub_if_data __rcu *scan_sdata; 1353 /* For backward compatibility only -- do not use */ 1354 struct cfg80211_chan_def _oper_chandef; 1355 1356 /* Temporary remain-on-channel for off-channel operations */ 1357 struct ieee80211_channel *tmp_channel; 1358 1359 /* channel contexts */ 1360 struct list_head chanctx_list; 1361 struct mutex chanctx_mtx; 1362 1363 #ifdef CONFIG_MAC80211_LEDS 1364 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1365 struct led_trigger tpt_led; 1366 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1367 atomic_t radio_led_active, tpt_led_active; 1368 struct tpt_led_trigger *tpt_led_trigger; 1369 #endif 1370 1371 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1372 /* SNMP counters */ 1373 /* dot11CountersTable */ 1374 u32 dot11TransmittedFragmentCount; 1375 u32 dot11MulticastTransmittedFrameCount; 1376 u32 dot11FailedCount; 1377 u32 dot11RetryCount; 1378 u32 dot11MultipleRetryCount; 1379 u32 dot11FrameDuplicateCount; 1380 u32 dot11ReceivedFragmentCount; 1381 u32 dot11MulticastReceivedFrameCount; 1382 u32 dot11TransmittedFrameCount; 1383 1384 /* TX/RX handler statistics */ 1385 unsigned int tx_handlers_drop; 1386 unsigned int tx_handlers_queued; 1387 unsigned int tx_handlers_drop_wep; 1388 unsigned int tx_handlers_drop_not_assoc; 1389 unsigned int tx_handlers_drop_unauth_port; 1390 unsigned int rx_handlers_drop; 1391 unsigned int rx_handlers_queued; 1392 unsigned int rx_handlers_drop_nullfunc; 1393 unsigned int rx_handlers_drop_defrag; 1394 unsigned int tx_expand_skb_head; 1395 unsigned int tx_expand_skb_head_cloned; 1396 unsigned int rx_expand_skb_head_defrag; 1397 unsigned int rx_handlers_fragments; 1398 unsigned int tx_status_drop; 1399 #define I802_DEBUG_INC(c) (c)++ 1400 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1401 #define I802_DEBUG_INC(c) do { } while (0) 1402 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1403 1404 1405 int total_ps_buffered; /* total number of all buffered unicast and 1406 * multicast packets for power saving stations 1407 */ 1408 1409 bool pspolling; 1410 /* 1411 * PS can only be enabled when we have exactly one managed 1412 * interface (and monitors) in PS, this then points there. 1413 */ 1414 struct ieee80211_sub_if_data *ps_sdata; 1415 struct work_struct dynamic_ps_enable_work; 1416 struct work_struct dynamic_ps_disable_work; 1417 struct timer_list dynamic_ps_timer; 1418 struct notifier_block ifa_notifier; 1419 struct notifier_block ifa6_notifier; 1420 1421 /* 1422 * The dynamic ps timeout configured from user space via WEXT - 1423 * this will override whatever chosen by mac80211 internally. 1424 */ 1425 int dynamic_ps_forced_timeout; 1426 1427 int user_power_level; /* in dBm, for all interfaces */ 1428 1429 enum ieee80211_smps_mode smps_mode; 1430 1431 struct work_struct restart_work; 1432 1433 #ifdef CONFIG_MAC80211_DEBUGFS 1434 struct local_debugfsdentries { 1435 struct dentry *rcdir; 1436 struct dentry *keys; 1437 } debugfs; 1438 bool force_tx_status; 1439 #endif 1440 1441 /* 1442 * Remain-on-channel support 1443 */ 1444 struct delayed_work roc_work; 1445 struct list_head roc_list; 1446 struct work_struct hw_roc_start, hw_roc_done; 1447 unsigned long hw_roc_start_time; 1448 u64 roc_cookie_counter; 1449 1450 struct idr ack_status_frames; 1451 spinlock_t ack_status_lock; 1452 1453 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1454 1455 /* virtual monitor interface */ 1456 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1457 struct cfg80211_chan_def monitor_chandef; 1458 1459 /* extended capabilities provided by mac80211 */ 1460 u8 ext_capa[8]; 1461 }; 1462 1463 static inline struct ieee80211_sub_if_data * 1464 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1465 { 1466 return netdev_priv(dev); 1467 } 1468 1469 static inline struct ieee80211_sub_if_data * 1470 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1471 { 1472 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1473 } 1474 1475 static inline struct ieee80211_supported_band * 1476 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1477 { 1478 struct ieee80211_local *local = sdata->local; 1479 struct ieee80211_chanctx_conf *chanctx_conf; 1480 enum nl80211_band band; 1481 1482 rcu_read_lock(); 1483 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1484 1485 if (!chanctx_conf) { 1486 rcu_read_unlock(); 1487 return NULL; 1488 } 1489 1490 band = chanctx_conf->def.chan->band; 1491 rcu_read_unlock(); 1492 1493 return local->hw.wiphy->bands[band]; 1494 } 1495 1496 /* this struct holds the value parsing from channel switch IE */ 1497 struct ieee80211_csa_ie { 1498 struct cfg80211_chan_def chandef; 1499 u8 mode; 1500 u8 count; 1501 u8 ttl; 1502 u16 pre_value; 1503 u16 reason_code; 1504 u32 max_switch_time; 1505 }; 1506 1507 /* Parsed Information Elements */ 1508 struct ieee802_11_elems { 1509 const u8 *ie_start; 1510 size_t total_len; 1511 1512 /* pointers to IEs */ 1513 const struct ieee80211_tdls_lnkie *lnk_id; 1514 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1515 const u8 *ext_capab; 1516 const u8 *ssid; 1517 const u8 *supp_rates; 1518 const u8 *ds_params; 1519 const struct ieee80211_tim_ie *tim; 1520 const u8 *challenge; 1521 const u8 *rsn; 1522 const u8 *rsnx; 1523 const u8 *erp_info; 1524 const u8 *ext_supp_rates; 1525 const u8 *wmm_info; 1526 const u8 *wmm_param; 1527 const struct ieee80211_ht_cap *ht_cap_elem; 1528 const struct ieee80211_ht_operation *ht_operation; 1529 const struct ieee80211_vht_cap *vht_cap_elem; 1530 const struct ieee80211_vht_operation *vht_operation; 1531 const struct ieee80211_meshconf_ie *mesh_config; 1532 const u8 *he_cap; 1533 const struct ieee80211_he_operation *he_operation; 1534 const struct ieee80211_he_spr *he_spr; 1535 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1536 const struct ieee80211_he_6ghz_capa *he_6ghz_capa; 1537 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT]; 1538 const u8 *uora_element; 1539 const u8 *mesh_id; 1540 const u8 *peering; 1541 const __le16 *awake_window; 1542 const u8 *preq; 1543 const u8 *prep; 1544 const u8 *perr; 1545 const struct ieee80211_rann_ie *rann; 1546 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1547 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1548 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1549 const u8 *max_channel_switch_time; 1550 const u8 *country_elem; 1551 const u8 *pwr_constr_elem; 1552 const u8 *cisco_dtpc_elem; 1553 const struct ieee80211_timeout_interval_ie *timeout_int; 1554 const u8 *opmode_notif; 1555 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1556 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1557 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1558 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1559 const struct ieee80211_bssid_index *bssid_index; 1560 u8 max_bssid_indicator; 1561 u8 dtim_count; 1562 u8 dtim_period; 1563 const struct ieee80211_addba_ext_ie *addba_ext_ie; 1564 const struct ieee80211_s1g_cap *s1g_capab; 1565 const struct ieee80211_s1g_oper_ie *s1g_oper; 1566 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat; 1567 const struct ieee80211_aid_response_ie *aid_resp; 1568 1569 /* length of them, respectively */ 1570 u8 ext_capab_len; 1571 u8 ssid_len; 1572 u8 supp_rates_len; 1573 u8 tim_len; 1574 u8 challenge_len; 1575 u8 rsn_len; 1576 u8 rsnx_len; 1577 u8 ext_supp_rates_len; 1578 u8 wmm_info_len; 1579 u8 wmm_param_len; 1580 u8 he_cap_len; 1581 u8 mesh_id_len; 1582 u8 peering_len; 1583 u8 preq_len; 1584 u8 prep_len; 1585 u8 perr_len; 1586 u8 country_elem_len; 1587 u8 bssid_index_len; 1588 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT]; 1589 u8 tx_pwr_env_num; 1590 1591 /* whether a parse error occurred while retrieving these elements */ 1592 bool parse_error; 1593 }; 1594 1595 static inline struct ieee80211_local *hw_to_local( 1596 struct ieee80211_hw *hw) 1597 { 1598 return container_of(hw, struct ieee80211_local, hw); 1599 } 1600 1601 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1602 { 1603 return container_of(txq, struct txq_info, txq); 1604 } 1605 1606 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1607 { 1608 struct txq_info *txqi = to_txq_info(txq); 1609 1610 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1611 } 1612 1613 static inline struct airtime_info *to_airtime_info(struct ieee80211_txq *txq) 1614 { 1615 struct ieee80211_sub_if_data *sdata; 1616 struct sta_info *sta; 1617 1618 if (txq->sta) { 1619 sta = container_of(txq->sta, struct sta_info, sta); 1620 return &sta->airtime[txq->ac]; 1621 } 1622 1623 sdata = vif_to_sdata(txq->vif); 1624 return &sdata->airtime[txq->ac]; 1625 } 1626 1627 /* To avoid divisions in the fast path, we keep pre-computed reciprocals for 1628 * airtime weight calculations. There are two different weights to keep track 1629 * of: The per-station weight and the sum of weights per phy. 1630 * 1631 * For the per-station weights (kept in airtime_info below), we use 32-bit 1632 * reciprocals with a devisor of 2^19. This lets us keep the multiplications and 1633 * divisions for the station weights as 32-bit operations at the cost of a bit 1634 * of rounding error for high weights; but the choice of divisor keeps rounding 1635 * errors <10% for weights <2^15, assuming no more than 8ms of airtime is 1636 * reported at a time. 1637 * 1638 * For the per-phy sum of weights the values can get higher, so we use 64-bit 1639 * operations for those with a 32-bit divisor, which should avoid any 1640 * significant rounding errors. 1641 */ 1642 #define IEEE80211_RECIPROCAL_DIVISOR_64 0x100000000ULL 1643 #define IEEE80211_RECIPROCAL_SHIFT_64 32 1644 #define IEEE80211_RECIPROCAL_DIVISOR_32 0x80000U 1645 #define IEEE80211_RECIPROCAL_SHIFT_32 19 1646 1647 static inline void airtime_weight_set(struct airtime_info *air_info, u16 weight) 1648 { 1649 if (air_info->weight == weight) 1650 return; 1651 1652 air_info->weight = weight; 1653 if (weight) { 1654 air_info->weight_reciprocal = 1655 IEEE80211_RECIPROCAL_DIVISOR_32 / weight; 1656 } else { 1657 air_info->weight_reciprocal = 0; 1658 } 1659 } 1660 1661 static inline void airtime_weight_sum_set(struct airtime_sched_info *air_sched, 1662 int weight_sum) 1663 { 1664 if (air_sched->weight_sum == weight_sum) 1665 return; 1666 1667 air_sched->weight_sum = weight_sum; 1668 if (air_sched->weight_sum) { 1669 air_sched->weight_sum_reciprocal = IEEE80211_RECIPROCAL_DIVISOR_64; 1670 do_div(air_sched->weight_sum_reciprocal, air_sched->weight_sum); 1671 } else { 1672 air_sched->weight_sum_reciprocal = 0; 1673 } 1674 } 1675 1676 /* A problem when trying to enforce airtime fairness is that we want to divide 1677 * the airtime between the currently *active* stations. However, basing this on 1678 * the instantaneous queue state of stations doesn't work, as queues tend to 1679 * oscillate very quickly between empty and occupied, leading to the scheduler 1680 * thinking only a single station is active when deciding whether to allow 1681 * transmission (and thus not throttling correctly). 1682 * 1683 * To fix this we use a timer-based notion of activity: a station is considered 1684 * active if it has been scheduled within the last 100 ms; we keep a separate 1685 * list of all the stations considered active in this manner, and lazily update 1686 * the total weight of active stations from this list (filtering the stations in 1687 * the list by their 'last active' time). 1688 * 1689 * We add one additional safeguard to guard against stations that manage to get 1690 * scheduled every 100 ms but don't transmit a lot of data, and thus don't use 1691 * up any airtime. Such stations would be able to get priority for an extended 1692 * period of time if they do start transmitting at full capacity again, and so 1693 * we add an explicit maximum for how far behind a station is allowed to fall in 1694 * the virtual airtime domain. This limit is set to a relatively high value of 1695 * 20 ms because the main mechanism for catching up idle stations is the active 1696 * state as described above; i.e., the hard limit should only be hit in 1697 * pathological cases. 1698 */ 1699 #define AIRTIME_ACTIVE_DURATION (100 * NSEC_PER_MSEC) 1700 #define AIRTIME_MAX_BEHIND 20000 /* 20 ms */ 1701 1702 static inline bool airtime_is_active(struct airtime_info *air_info, u64 now) 1703 { 1704 return air_info->last_scheduled >= now - AIRTIME_ACTIVE_DURATION; 1705 } 1706 1707 static inline void airtime_set_active(struct airtime_sched_info *air_sched, 1708 struct airtime_info *air_info, u64 now) 1709 { 1710 air_info->last_scheduled = now; 1711 air_sched->last_schedule_activity = now; 1712 list_move_tail(&air_info->list, &air_sched->active_list); 1713 } 1714 1715 static inline bool airtime_catchup_v_t(struct airtime_sched_info *air_sched, 1716 u64 v_t, u64 now) 1717 { 1718 air_sched->v_t = v_t; 1719 return true; 1720 } 1721 1722 static inline void init_airtime_info(struct airtime_info *air_info, 1723 struct airtime_sched_info *air_sched) 1724 { 1725 atomic_set(&air_info->aql_tx_pending, 0); 1726 air_info->aql_limit_low = air_sched->aql_txq_limit_low; 1727 air_info->aql_limit_high = air_sched->aql_txq_limit_high; 1728 airtime_weight_set(air_info, IEEE80211_DEFAULT_AIRTIME_WEIGHT); 1729 INIT_LIST_HEAD(&air_info->list); 1730 } 1731 1732 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1733 { 1734 return ether_addr_equal(raddr, addr) || 1735 is_broadcast_ether_addr(raddr); 1736 } 1737 1738 static inline bool 1739 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1740 { 1741 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1742 status->flag & RX_FLAG_MACTIME_END); 1743 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END | 1744 RX_FLAG_MACTIME_PLCP_START)); 1745 } 1746 1747 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1748 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1749 1750 /* This function returns the number of multicast stations connected to this 1751 * interface. It returns -1 if that number is not tracked, that is for netdevs 1752 * not in AP or AP_VLAN mode or when using 4addr. 1753 */ 1754 static inline int 1755 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1756 { 1757 if (sdata->vif.type == NL80211_IFTYPE_AP) 1758 return atomic_read(&sdata->u.ap.num_mcast_sta); 1759 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1760 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1761 return -1; 1762 } 1763 1764 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1765 struct ieee80211_rx_status *status, 1766 unsigned int mpdu_len, 1767 unsigned int mpdu_offset); 1768 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1769 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1770 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1771 u32 changed); 1772 void ieee80211_configure_filter(struct ieee80211_local *local); 1773 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1774 1775 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1776 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1777 u64 *cookie, gfp_t gfp); 1778 1779 void ieee80211_check_fast_rx(struct sta_info *sta); 1780 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1781 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1782 void ieee80211_clear_fast_rx(struct sta_info *sta); 1783 1784 /* STA code */ 1785 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1786 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1787 struct cfg80211_auth_request *req); 1788 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1789 struct cfg80211_assoc_request *req); 1790 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1791 struct cfg80211_deauth_request *req); 1792 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1793 struct cfg80211_disassoc_request *req); 1794 void ieee80211_send_pspoll(struct ieee80211_local *local, 1795 struct ieee80211_sub_if_data *sdata); 1796 void ieee80211_recalc_ps(struct ieee80211_local *local); 1797 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1798 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1799 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1800 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1801 struct sk_buff *skb); 1802 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata, 1803 struct sk_buff *skb); 1804 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1805 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1806 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1807 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1808 __le16 fc, bool acked); 1809 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1810 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1811 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1812 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1813 u8 *bssid, u8 reason, bool tx); 1814 1815 /* IBSS code */ 1816 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1817 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1818 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1819 const u8 *bssid, const u8 *addr, u32 supp_rates); 1820 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1821 struct cfg80211_ibss_params *params); 1822 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1823 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1824 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1825 struct sk_buff *skb); 1826 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1827 struct cfg80211_csa_settings *csa_settings); 1828 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1829 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1830 1831 /* OCB code */ 1832 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1833 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1834 const u8 *bssid, const u8 *addr, u32 supp_rates); 1835 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1836 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1837 struct ocb_setup *setup); 1838 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1839 1840 /* mesh code */ 1841 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1842 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1843 struct sk_buff *skb); 1844 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1845 struct cfg80211_csa_settings *csa_settings); 1846 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1847 1848 /* scan/BSS handling */ 1849 void ieee80211_scan_work(struct work_struct *work); 1850 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1851 const u8 *ssid, u8 ssid_len, 1852 struct ieee80211_channel **channels, 1853 unsigned int n_channels, 1854 enum nl80211_bss_scan_width scan_width); 1855 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1856 struct cfg80211_scan_request *req); 1857 void ieee80211_scan_cancel(struct ieee80211_local *local); 1858 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1859 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1860 1861 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1862 struct ieee80211_bss * 1863 ieee80211_bss_info_update(struct ieee80211_local *local, 1864 struct ieee80211_rx_status *rx_status, 1865 struct ieee80211_mgmt *mgmt, 1866 size_t len, 1867 struct ieee80211_channel *channel); 1868 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1869 struct ieee80211_bss *bss); 1870 1871 /* scheduled scan handling */ 1872 int 1873 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1874 struct cfg80211_sched_scan_request *req); 1875 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1876 struct cfg80211_sched_scan_request *req); 1877 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1878 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1879 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1880 1881 /* off-channel/mgmt-tx */ 1882 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1883 void ieee80211_offchannel_return(struct ieee80211_local *local); 1884 void ieee80211_roc_setup(struct ieee80211_local *local); 1885 void ieee80211_start_next_roc(struct ieee80211_local *local); 1886 void ieee80211_roc_purge(struct ieee80211_local *local, 1887 struct ieee80211_sub_if_data *sdata); 1888 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1889 struct ieee80211_channel *chan, 1890 unsigned int duration, u64 *cookie); 1891 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1892 struct wireless_dev *wdev, u64 cookie); 1893 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1894 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1895 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1896 struct wireless_dev *wdev, u64 cookie); 1897 1898 /* channel switch handling */ 1899 void ieee80211_csa_finalize_work(struct work_struct *work); 1900 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1901 struct cfg80211_csa_settings *params); 1902 1903 /* color change handling */ 1904 void ieee80211_color_change_finalize_work(struct work_struct *work); 1905 1906 /* interface handling */ 1907 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \ 1908 NETIF_F_HW_CSUM | NETIF_F_SG | \ 1909 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE) 1910 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM) 1911 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \ 1912 MAC80211_SUPPORTED_FEATURES_RX) 1913 1914 int ieee80211_iface_init(void); 1915 void ieee80211_iface_exit(void); 1916 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1917 unsigned char name_assign_type, 1918 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1919 struct vif_params *params); 1920 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1921 enum nl80211_iftype type); 1922 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1923 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1924 u32 ieee80211_idle_off(struct ieee80211_local *local); 1925 void ieee80211_recalc_idle(struct ieee80211_local *local); 1926 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1927 const int offset); 1928 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1929 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1930 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1931 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1932 1933 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1934 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1935 bool update_bss); 1936 void ieee80211_recalc_offload(struct ieee80211_local *local); 1937 1938 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1939 { 1940 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1941 } 1942 1943 /* tx handling */ 1944 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1945 void ieee80211_tx_pending(struct tasklet_struct *t); 1946 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1947 struct net_device *dev); 1948 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1949 struct net_device *dev); 1950 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb, 1951 struct net_device *dev); 1952 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1953 struct net_device *dev, 1954 u32 info_flags, 1955 u32 ctrl_flags, 1956 u64 *cookie); 1957 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1958 struct sk_buff_head *skbs); 1959 struct sk_buff * 1960 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1961 struct sk_buff *skb, u32 info_flags); 1962 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1963 struct ieee80211_supported_band *sband, 1964 int retry_count, int shift, bool send_to_cooked, 1965 struct ieee80211_tx_status *status); 1966 1967 void ieee80211_check_fast_xmit(struct sta_info *sta); 1968 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1969 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1970 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1971 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1972 const u8 *buf, size_t len, 1973 const u8 *dest, __be16 proto, bool unencrypted, 1974 u64 *cookie); 1975 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1976 const u8 *buf, size_t len); 1977 void ieee80211_resort_txq(struct ieee80211_hw *hw, 1978 struct ieee80211_txq *txq); 1979 void ieee80211_unschedule_txq(struct ieee80211_hw *hw, 1980 struct ieee80211_txq *txq, 1981 bool purge); 1982 void ieee80211_update_airtime_weight(struct ieee80211_local *local, 1983 struct airtime_sched_info *air_sched, 1984 u64 now, bool force); 1985 1986 /* HT */ 1987 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1988 struct ieee80211_sta_ht_cap *ht_cap); 1989 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1990 struct ieee80211_supported_band *sband, 1991 const struct ieee80211_ht_cap *ht_cap_ie, 1992 struct sta_info *sta); 1993 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1994 const u8 *da, u16 tid, 1995 u16 initiator, u16 reason_code); 1996 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1997 enum ieee80211_smps_mode smps, const u8 *da, 1998 const u8 *bssid); 1999 void ieee80211_request_smps_ap_work(struct work_struct *work); 2000 void ieee80211_request_smps_mgd_work(struct work_struct *work); 2001 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 2002 enum ieee80211_smps_mode smps_mode_new); 2003 2004 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2005 u16 initiator, u16 reason, bool stop); 2006 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 2007 u16 initiator, u16 reason, bool stop); 2008 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 2009 u8 dialog_token, u16 timeout, 2010 u16 start_seq_num, u16 ba_policy, u16 tid, 2011 u16 buf_size, bool tx, bool auto_seq, 2012 const struct ieee80211_addba_ext_ie *addbaext); 2013 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 2014 enum ieee80211_agg_stop_reason reason); 2015 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 2016 struct sta_info *sta, 2017 struct ieee80211_mgmt *mgmt, size_t len); 2018 void ieee80211_process_addba_resp(struct ieee80211_local *local, 2019 struct sta_info *sta, 2020 struct ieee80211_mgmt *mgmt, 2021 size_t len); 2022 void ieee80211_process_addba_request(struct ieee80211_local *local, 2023 struct sta_info *sta, 2024 struct ieee80211_mgmt *mgmt, 2025 size_t len); 2026 2027 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2028 enum ieee80211_agg_stop_reason reason); 2029 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 2030 enum ieee80211_agg_stop_reason reason); 2031 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 2032 struct tid_ampdu_tx *tid_tx); 2033 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 2034 struct tid_ampdu_tx *tid_tx); 2035 void ieee80211_ba_session_work(struct work_struct *work); 2036 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 2037 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 2038 2039 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 2040 enum nl80211_smps_mode 2041 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 2042 2043 /* VHT */ 2044 void 2045 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 2046 struct ieee80211_supported_band *sband, 2047 const struct ieee80211_vht_cap *vht_cap_ie, 2048 struct sta_info *sta); 2049 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 2050 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 2051 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 2052 enum ieee80211_sta_rx_bandwidth 2053 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 2054 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 2055 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 2056 struct ieee80211_mgmt *mgmt); 2057 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2058 struct sta_info *sta, u8 opmode, 2059 enum nl80211_band band); 2060 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 2061 struct sta_info *sta, u8 opmode, 2062 enum nl80211_band band); 2063 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 2064 struct ieee80211_sta_vht_cap *vht_cap); 2065 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 2066 u16 vht_mask[NL80211_VHT_NSS_MAX]); 2067 enum nl80211_chan_width 2068 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 2069 2070 /* HE */ 2071 void 2072 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 2073 struct ieee80211_supported_band *sband, 2074 const u8 *he_cap_ie, u8 he_cap_len, 2075 const struct ieee80211_he_6ghz_capa *he_6ghz_capa, 2076 struct sta_info *sta); 2077 void 2078 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif, 2079 const struct ieee80211_he_spr *he_spr_ie_elem); 2080 2081 void 2082 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif, 2083 const struct ieee80211_he_operation *he_op_ie_elem); 2084 2085 /* S1G */ 2086 void ieee80211_s1g_sta_rate_init(struct sta_info *sta); 2087 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb); 2088 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, 2089 struct sk_buff *skb); 2090 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, 2091 struct sk_buff *skb); 2092 2093 /* Spectrum management */ 2094 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 2095 struct ieee80211_mgmt *mgmt, 2096 size_t len); 2097 /** 2098 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 2099 * @sdata: the sdata of the interface which has received the frame 2100 * @elems: parsed 802.11 elements received with the frame 2101 * @current_band: indicates the current band 2102 * @vht_cap_info: VHT capabilities of the transmitter 2103 * @sta_flags: contains information about own capabilities and restrictions 2104 * to decide which channel switch announcements can be accepted. Only the 2105 * following subset of &enum ieee80211_sta_flags are evaluated: 2106 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 2107 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 2108 * %IEEE80211_STA_DISABLE_160MHZ. 2109 * @bssid: the currently connected bssid (for reporting) 2110 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 2111 All of them will be filled with if success only. 2112 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 2113 */ 2114 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 2115 struct ieee802_11_elems *elems, 2116 enum nl80211_band current_band, 2117 u32 vht_cap_info, 2118 u32 sta_flags, u8 *bssid, 2119 struct ieee80211_csa_ie *csa_ie); 2120 2121 /* Suspend/resume and hw reconfiguration */ 2122 int ieee80211_reconfig(struct ieee80211_local *local); 2123 void ieee80211_stop_device(struct ieee80211_local *local); 2124 2125 int __ieee80211_suspend(struct ieee80211_hw *hw, 2126 struct cfg80211_wowlan *wowlan); 2127 2128 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 2129 { 2130 struct ieee80211_local *local = hw_to_local(hw); 2131 2132 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 2133 !test_bit(SCAN_COMPLETED, &local->scanning), 2134 "%s: resume with hardware scan still in progress\n", 2135 wiphy_name(hw->wiphy)); 2136 2137 return ieee80211_reconfig(hw_to_local(hw)); 2138 } 2139 2140 /* utility functions/constants */ 2141 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 2142 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 2143 int rate, int erp, int short_preamble, 2144 int shift); 2145 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 2146 struct ieee80211_tx_queue_params *qparam, 2147 int ac); 2148 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 2149 bool bss_notify, bool enable_qos); 2150 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 2151 struct sta_info *sta, struct sk_buff *skb); 2152 2153 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2154 struct sk_buff *skb, int tid, 2155 enum nl80211_band band); 2156 2157 /* sta_out needs to be checked for ERR_PTR() before using */ 2158 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata, 2159 struct sk_buff *skb, 2160 struct sta_info **sta_out); 2161 2162 static inline void 2163 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 2164 struct sk_buff *skb, int tid, 2165 enum nl80211_band band) 2166 { 2167 rcu_read_lock(); 2168 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 2169 rcu_read_unlock(); 2170 } 2171 2172 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 2173 struct sk_buff *skb, int tid) 2174 { 2175 struct ieee80211_chanctx_conf *chanctx_conf; 2176 2177 rcu_read_lock(); 2178 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 2179 if (WARN_ON(!chanctx_conf)) { 2180 rcu_read_unlock(); 2181 kfree_skb(skb); 2182 return; 2183 } 2184 2185 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 2186 chanctx_conf->def.chan->band); 2187 rcu_read_unlock(); 2188 } 2189 2190 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 2191 struct sk_buff *skb) 2192 { 2193 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 2194 ieee80211_tx_skb_tid(sdata, skb, 7); 2195 } 2196 2197 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 2198 struct ieee802_11_elems *elems, 2199 u64 filter, u32 crc, u8 *transmitter_bssid, 2200 u8 *bss_bssid); 2201 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 2202 bool action, 2203 struct ieee802_11_elems *elems, 2204 u8 *transmitter_bssid, 2205 u8 *bss_bssid) 2206 { 2207 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 2208 transmitter_bssid, bss_bssid); 2209 } 2210 2211 2212 extern const int ieee802_1d_to_ac[8]; 2213 2214 static inline int ieee80211_ac_from_tid(int tid) 2215 { 2216 return ieee802_1d_to_ac[tid & 7]; 2217 } 2218 2219 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 2220 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 2221 void ieee80211_dynamic_ps_timer(struct timer_list *t); 2222 void ieee80211_send_nullfunc(struct ieee80211_local *local, 2223 struct ieee80211_sub_if_data *sdata, 2224 bool powersave); 2225 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 2226 struct ieee80211_sub_if_data *sdata); 2227 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2228 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2229 2230 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2231 unsigned long queues, 2232 enum queue_stop_reason reason, 2233 bool refcounted); 2234 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2235 struct ieee80211_sub_if_data *sdata, 2236 enum queue_stop_reason reason); 2237 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2238 struct ieee80211_sub_if_data *sdata, 2239 enum queue_stop_reason reason); 2240 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2241 unsigned long queues, 2242 enum queue_stop_reason reason, 2243 bool refcounted); 2244 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2245 enum queue_stop_reason reason, 2246 bool refcounted); 2247 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2248 enum queue_stop_reason reason, 2249 bool refcounted); 2250 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2251 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2252 struct sk_buff *skb); 2253 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2254 struct sk_buff_head *skbs); 2255 void ieee80211_flush_queues(struct ieee80211_local *local, 2256 struct ieee80211_sub_if_data *sdata, bool drop); 2257 void __ieee80211_flush_queues(struct ieee80211_local *local, 2258 struct ieee80211_sub_if_data *sdata, 2259 unsigned int queues, bool drop); 2260 2261 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2262 { 2263 /* 2264 * It's unsafe to try to do any work during reconfigure flow. 2265 * When the flow ends the work will be requeued. 2266 */ 2267 if (local->in_reconfig) 2268 return false; 2269 2270 /* 2271 * If quiescing is set, we are racing with __ieee80211_suspend. 2272 * __ieee80211_suspend flushes the workers after setting quiescing, 2273 * and we check quiescing / suspended before enqueing new workers. 2274 * We should abort the worker to avoid the races below. 2275 */ 2276 if (local->quiescing) 2277 return false; 2278 2279 /* 2280 * We might already be suspended if the following scenario occurs: 2281 * __ieee80211_suspend Control path 2282 * 2283 * if (local->quiescing) 2284 * return; 2285 * local->quiescing = true; 2286 * flush_workqueue(); 2287 * queue_work(...); 2288 * local->suspended = true; 2289 * local->quiescing = false; 2290 * worker starts running... 2291 */ 2292 if (local->suspended) 2293 return false; 2294 2295 return true; 2296 } 2297 2298 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2299 void ieee80211_txq_set_params(struct ieee80211_local *local); 2300 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2301 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2302 struct sta_info *sta, 2303 struct txq_info *txq, int tid); 2304 void ieee80211_txq_purge(struct ieee80211_local *local, 2305 struct txq_info *txqi); 2306 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2307 struct ieee80211_sub_if_data *sdata); 2308 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2309 struct txq_info *txqi); 2310 void ieee80211_wake_txqs(struct tasklet_struct *t); 2311 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2312 u16 transaction, u16 auth_alg, u16 status, 2313 const u8 *extra, size_t extra_len, const u8 *bssid, 2314 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2315 u32 tx_flags); 2316 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2317 const u8 *da, const u8 *bssid, 2318 u16 stype, u16 reason, 2319 bool send_frame, u8 *frame_buf); 2320 2321 enum { 2322 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2323 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2324 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2325 }; 2326 2327 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer, 2328 size_t buffer_len, 2329 struct ieee80211_scan_ies *ie_desc, 2330 const u8 *ie, size_t ie_len, 2331 u8 bands_used, u32 *rate_masks, 2332 struct cfg80211_chan_def *chandef, 2333 u32 flags); 2334 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2335 const u8 *src, const u8 *dst, 2336 u32 ratemask, 2337 struct ieee80211_channel *chan, 2338 const u8 *ssid, size_t ssid_len, 2339 const u8 *ie, size_t ie_len, 2340 u32 flags); 2341 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2342 struct ieee802_11_elems *elems, 2343 enum nl80211_band band, u32 *basic_rates); 2344 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2345 enum ieee80211_smps_mode smps_mode); 2346 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2347 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2348 2349 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2350 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2351 u16 cap); 2352 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2353 const struct cfg80211_chan_def *chandef, 2354 u16 prot_mode, bool rifs_mode); 2355 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2356 const struct cfg80211_chan_def *chandef); 2357 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2358 u32 cap); 2359 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2360 const struct cfg80211_chan_def *chandef); 2361 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype); 2362 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2363 const struct ieee80211_sta_he_cap *he_cap, 2364 u8 *end); 2365 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata, 2366 struct sk_buff *skb); 2367 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef); 2368 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2369 const struct ieee80211_supported_band *sband, 2370 const u8 *srates, int srates_len, u32 *rates); 2371 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2372 struct sk_buff *skb, bool need_basic, 2373 enum nl80211_band band); 2374 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2375 struct sk_buff *skb, bool need_basic, 2376 enum nl80211_band band); 2377 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2378 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata, 2379 struct ieee80211_sta_s1g_cap *caps, 2380 struct sk_buff *skb); 2381 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, 2382 struct sk_buff *skb); 2383 2384 /* channel management */ 2385 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2386 struct cfg80211_chan_def *chandef); 2387 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info, 2388 const struct ieee80211_vht_operation *oper, 2389 const struct ieee80211_ht_operation *htop, 2390 struct cfg80211_chan_def *chandef); 2391 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata, 2392 const struct ieee80211_he_operation *he_oper, 2393 struct cfg80211_chan_def *chandef); 2394 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper, 2395 struct cfg80211_chan_def *chandef); 2396 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2397 2398 int __must_check 2399 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2400 const struct cfg80211_chan_def *chandef, 2401 enum ieee80211_chanctx_mode mode); 2402 int __must_check 2403 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2404 const struct cfg80211_chan_def *chandef, 2405 enum ieee80211_chanctx_mode mode, 2406 bool radar_required); 2407 int __must_check 2408 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2409 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2410 2411 int __must_check 2412 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2413 const struct cfg80211_chan_def *chandef, 2414 u32 *changed); 2415 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2416 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2417 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2418 bool clear); 2419 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2420 struct ieee80211_chanctx *ctx); 2421 2422 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2423 struct ieee80211_chanctx *chanctx); 2424 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2425 struct ieee80211_chanctx *ctx); 2426 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2427 2428 void ieee80211_dfs_cac_timer(unsigned long data); 2429 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2430 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2431 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2432 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2433 struct cfg80211_csa_settings *csa_settings); 2434 2435 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2436 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2437 const struct ieee80211_cipher_scheme * 2438 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2439 enum nl80211_iftype iftype); 2440 int ieee80211_cs_headroom(struct ieee80211_local *local, 2441 struct cfg80211_crypto_settings *crypto, 2442 enum nl80211_iftype iftype); 2443 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2444 struct ieee80211_sub_if_data *sdata); 2445 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2446 const struct cfg80211_chan_def *chandef, 2447 enum ieee80211_chanctx_mode chanmode, 2448 u8 radar_detect); 2449 int ieee80211_max_num_channels(struct ieee80211_local *local); 2450 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2451 struct ieee80211_chanctx *ctx); 2452 2453 /* TDLS */ 2454 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2455 const u8 *peer, u8 action_code, u8 dialog_token, 2456 u16 status_code, u32 peer_capability, 2457 bool initiator, const u8 *extra_ies, 2458 size_t extra_ies_len); 2459 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2460 const u8 *peer, enum nl80211_tdls_operation oper); 2461 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2462 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2463 const u8 *addr, u8 oper_class, 2464 struct cfg80211_chan_def *chandef); 2465 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2466 struct net_device *dev, 2467 const u8 *addr); 2468 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2469 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2470 const u8 *peer, u16 reason); 2471 void 2472 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2473 struct sk_buff *skb); 2474 2475 2476 const char *ieee80211_get_reason_code_string(u16 reason_code); 2477 u16 ieee80211_encode_usf(int val); 2478 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 2479 enum nl80211_iftype type); 2480 2481 extern const struct ethtool_ops ieee80211_ethtool_ops; 2482 2483 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw, 2484 struct ieee80211_vif *vif, 2485 struct ieee80211_sta *pubsta, 2486 int len, bool ampdu); 2487 #ifdef CONFIG_MAC80211_NOINLINE 2488 #define debug_noinline noinline 2489 #else 2490 #define debug_noinline 2491 #endif 2492 2493 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); 2494 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); 2495 2496 #endif /* IEEE80211_I_H */ 2497