1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2015 Intel Mobile Communications GmbH 7 * Copyright (C) 2018-2019 Intel Corporation 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #ifndef IEEE80211_I_H 15 #define IEEE80211_I_H 16 17 #include <linux/kernel.h> 18 #include <linux/device.h> 19 #include <linux/if_ether.h> 20 #include <linux/interrupt.h> 21 #include <linux/list.h> 22 #include <linux/netdevice.h> 23 #include <linux/skbuff.h> 24 #include <linux/workqueue.h> 25 #include <linux/types.h> 26 #include <linux/spinlock.h> 27 #include <linux/etherdevice.h> 28 #include <linux/leds.h> 29 #include <linux/idr.h> 30 #include <linux/rhashtable.h> 31 #include <net/ieee80211_radiotap.h> 32 #include <net/cfg80211.h> 33 #include <net/mac80211.h> 34 #include <net/fq.h> 35 #include "key.h" 36 #include "sta_info.h" 37 #include "debug.h" 38 39 extern const struct cfg80211_ops mac80211_config_ops; 40 41 struct ieee80211_local; 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 18 55 56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 57 * reception of at least three fragmented frames. This limit can be increased 58 * by changing this define, at the cost of slower frame reassembly and 59 * increased memory use (about 2 kB of RAM per entry). */ 60 #define IEEE80211_FRAGMENT_MAX 4 61 62 /* power level hasn't been configured (or set to automatic) */ 63 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 64 65 /* 66 * Some APs experience problems when working with U-APSD. Decreasing the 67 * probability of that happening by using legacy mode for all ACs but VO isn't 68 * enough. 69 * 70 * Cisco 4410N originally forced us to enable VO by default only because it 71 * treated non-VO ACs as legacy. 72 * 73 * However some APs (notably Netgear R7000) silently reclassify packets to 74 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 75 * clients would never see some frames (e.g. ARP responses) or would fetch them 76 * accidentally after a long time. 77 * 78 * It makes little sense to enable u-APSD queues by default because it needs 79 * userspace applications to be aware of it to actually take advantage of the 80 * possible additional powersavings. Implicitly depending on driver autotrigger 81 * frame support doesn't make much sense. 82 */ 83 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 84 85 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 86 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 87 88 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 89 90 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 91 92 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 93 94 struct ieee80211_fragment_entry { 95 struct sk_buff_head skb_list; 96 unsigned long first_frag_time; 97 u16 seq; 98 u16 extra_len; 99 u16 last_frag; 100 u8 rx_queue; 101 bool check_sequential_pn; /* needed for CCMP/GCMP */ 102 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 103 }; 104 105 106 struct ieee80211_bss { 107 u32 device_ts_beacon, device_ts_presp; 108 109 bool wmm_used; 110 bool uapsd_supported; 111 112 #define IEEE80211_MAX_SUPP_RATES 32 113 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 114 size_t supp_rates_len; 115 struct ieee80211_rate *beacon_rate; 116 117 /* 118 * During association, we save an ERP value from a probe response so 119 * that we can feed ERP info to the driver when handling the 120 * association completes. these fields probably won't be up-to-date 121 * otherwise, you probably don't want to use them. 122 */ 123 bool has_erp_value; 124 u8 erp_value; 125 126 /* Keep track of the corruption of the last beacon/probe response. */ 127 u8 corrupt_data; 128 129 /* Keep track of what bits of information we have valid info for. */ 130 u8 valid_data; 131 }; 132 133 /** 134 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 135 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 136 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 137 * 138 * These are bss flags that are attached to a bss in the 139 * @corrupt_data field of &struct ieee80211_bss. 140 */ 141 enum ieee80211_bss_corrupt_data_flags { 142 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 143 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 144 }; 145 146 /** 147 * enum ieee80211_valid_data_flags - BSS valid data flags 148 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 150 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 151 * 152 * These are bss flags that are attached to a bss in the 153 * @valid_data field of &struct ieee80211_bss. They show which parts 154 * of the data structure were received as a result of an un-corrupted 155 * beacon/probe response. 156 */ 157 enum ieee80211_bss_valid_data_flags { 158 IEEE80211_BSS_VALID_WMM = BIT(1), 159 IEEE80211_BSS_VALID_RATES = BIT(2), 160 IEEE80211_BSS_VALID_ERP = BIT(3) 161 }; 162 163 typedef unsigned __bitwise ieee80211_tx_result; 164 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 165 #define TX_DROP ((__force ieee80211_tx_result) 1u) 166 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 167 168 #define IEEE80211_TX_NO_SEQNO BIT(0) 169 #define IEEE80211_TX_UNICAST BIT(1) 170 #define IEEE80211_TX_PS_BUFFERED BIT(2) 171 172 struct ieee80211_tx_data { 173 struct sk_buff *skb; 174 struct sk_buff_head skbs; 175 struct ieee80211_local *local; 176 struct ieee80211_sub_if_data *sdata; 177 struct sta_info *sta; 178 struct ieee80211_key *key; 179 struct ieee80211_tx_rate rate; 180 181 unsigned int flags; 182 }; 183 184 185 typedef unsigned __bitwise ieee80211_rx_result; 186 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 187 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 188 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 189 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 190 191 /** 192 * enum ieee80211_packet_rx_flags - packet RX flags 193 * @IEEE80211_RX_AMSDU: a-MSDU packet 194 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 195 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 196 * 197 * These are per-frame flags that are attached to a frame in the 198 * @rx_flags field of &struct ieee80211_rx_status. 199 */ 200 enum ieee80211_packet_rx_flags { 201 IEEE80211_RX_AMSDU = BIT(3), 202 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 203 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 204 }; 205 206 /** 207 * enum ieee80211_rx_flags - RX data flags 208 * 209 * @IEEE80211_RX_CMNTR: received on cooked monitor already 210 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 211 * to cfg80211_report_obss_beacon(). 212 * 213 * These flags are used across handling multiple interfaces 214 * for a single frame. 215 */ 216 enum ieee80211_rx_flags { 217 IEEE80211_RX_CMNTR = BIT(0), 218 IEEE80211_RX_BEACON_REPORTED = BIT(1), 219 }; 220 221 struct ieee80211_rx_data { 222 struct napi_struct *napi; 223 struct sk_buff *skb; 224 struct ieee80211_local *local; 225 struct ieee80211_sub_if_data *sdata; 226 struct sta_info *sta; 227 struct ieee80211_key *key; 228 229 unsigned int flags; 230 231 /* 232 * Index into sequence numbers array, 0..16 233 * since the last (16) is used for non-QoS, 234 * will be 16 on non-QoS frames. 235 */ 236 int seqno_idx; 237 238 /* 239 * Index into the security IV/PN arrays, 0..16 240 * since the last (16) is used for CCMP-encrypted 241 * management frames, will be set to 16 on mgmt 242 * frames and 0 on non-QoS frames. 243 */ 244 int security_idx; 245 246 u32 tkip_iv32; 247 u16 tkip_iv16; 248 }; 249 250 struct ieee80211_csa_settings { 251 const u16 *counter_offsets_beacon; 252 const u16 *counter_offsets_presp; 253 254 int n_counter_offsets_beacon; 255 int n_counter_offsets_presp; 256 257 u8 count; 258 }; 259 260 struct beacon_data { 261 u8 *head, *tail; 262 int head_len, tail_len; 263 struct ieee80211_meshconf_ie *meshconf; 264 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 265 u8 csa_current_counter; 266 struct rcu_head rcu_head; 267 }; 268 269 struct probe_resp { 270 struct rcu_head rcu_head; 271 int len; 272 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 273 u8 data[0]; 274 }; 275 276 struct ps_data { 277 /* yes, this looks ugly, but guarantees that we can later use 278 * bitmap_empty :) 279 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 280 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 281 __aligned(__alignof__(unsigned long)); 282 struct sk_buff_head bc_buf; 283 atomic_t num_sta_ps; /* number of stations in PS mode */ 284 int dtim_count; 285 bool dtim_bc_mc; 286 }; 287 288 struct ieee80211_if_ap { 289 struct beacon_data __rcu *beacon; 290 struct probe_resp __rcu *probe_resp; 291 292 /* to be used after channel switch. */ 293 struct cfg80211_beacon_data *next_beacon; 294 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 295 296 struct ps_data ps; 297 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 298 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 299 driver_smps_mode; /* smps mode request */ 300 301 struct work_struct request_smps_work; 302 bool multicast_to_unicast; 303 }; 304 305 struct ieee80211_if_wds { 306 struct sta_info *sta; 307 u8 remote_addr[ETH_ALEN]; 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 bool connection_loss; 452 453 struct cfg80211_bss *associated; 454 struct ieee80211_mgd_auth_data *auth_data; 455 struct ieee80211_mgd_assoc_data *assoc_data; 456 457 u8 bssid[ETH_ALEN] __aligned(2); 458 459 u16 aid; 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 */ 540 541 /* TDLS support */ 542 u8 tdls_peer[ETH_ALEN] __aligned(2); 543 struct delayed_work tdls_peer_del_work; 544 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 545 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 546 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 547 bool tdls_chan_switch_prohibited; 548 bool tdls_wider_bw_prohibited; 549 550 /* WMM-AC TSPEC support */ 551 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 552 /* Use a separate work struct so that we can do something here 553 * while the sdata->work is flushing the queues, for example. 554 * otherwise, in scenarios where we hardly get any traffic out 555 * on the BE queue, but there's a lot of VO traffic, we might 556 * get stuck in a downgraded situation and flush takes forever. 557 */ 558 struct delayed_work tx_tspec_wk; 559 560 /* Information elements from the last transmitted (Re)Association 561 * Request frame. 562 */ 563 u8 *assoc_req_ies; 564 size_t assoc_req_ies_len; 565 }; 566 567 struct ieee80211_if_ibss { 568 struct timer_list timer; 569 struct work_struct csa_connection_drop_work; 570 571 unsigned long last_scan_completed; 572 573 u32 basic_rates; 574 575 bool fixed_bssid; 576 bool fixed_channel; 577 bool privacy; 578 579 bool control_port; 580 bool userspace_handles_dfs; 581 582 u8 bssid[ETH_ALEN] __aligned(2); 583 u8 ssid[IEEE80211_MAX_SSID_LEN]; 584 u8 ssid_len, ie_len; 585 u8 *ie; 586 struct cfg80211_chan_def chandef; 587 588 unsigned long ibss_join_req; 589 /* probe response/beacon for IBSS */ 590 struct beacon_data __rcu *presp; 591 592 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 593 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 594 595 spinlock_t incomplete_lock; 596 struct list_head incomplete_stations; 597 598 enum { 599 IEEE80211_IBSS_MLME_SEARCH, 600 IEEE80211_IBSS_MLME_JOINED, 601 } state; 602 }; 603 604 /** 605 * struct ieee80211_if_ocb - OCB mode state 606 * 607 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 608 * @wrkq_flags: OCB deferred task action 609 * @incomplete_lock: delayed STA insertion lock 610 * @incomplete_stations: list of STAs waiting for delayed insertion 611 * @joined: indication if the interface is connected to an OCB network 612 */ 613 struct ieee80211_if_ocb { 614 struct timer_list housekeeping_timer; 615 unsigned long wrkq_flags; 616 617 spinlock_t incomplete_lock; 618 struct list_head incomplete_stations; 619 620 bool joined; 621 }; 622 623 /** 624 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 625 * 626 * these declarations define the interface, which enables 627 * vendor-specific mesh synchronization 628 * 629 */ 630 struct ieee802_11_elems; 631 struct ieee80211_mesh_sync_ops { 632 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 633 u16 stype, 634 struct ieee80211_mgmt *mgmt, 635 struct ieee802_11_elems *elems, 636 struct ieee80211_rx_status *rx_status); 637 638 /* should be called with beacon_data under RCU read lock */ 639 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 640 struct beacon_data *beacon); 641 /* add other framework functions here */ 642 }; 643 644 struct mesh_csa_settings { 645 struct rcu_head rcu_head; 646 struct cfg80211_csa_settings settings; 647 }; 648 649 struct ieee80211_if_mesh { 650 struct timer_list housekeeping_timer; 651 struct timer_list mesh_path_timer; 652 struct timer_list mesh_path_root_timer; 653 654 unsigned long wrkq_flags; 655 unsigned long mbss_changed; 656 657 bool userspace_handles_dfs; 658 659 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 660 size_t mesh_id_len; 661 /* Active Path Selection Protocol Identifier */ 662 u8 mesh_pp_id; 663 /* Active Path Selection Metric Identifier */ 664 u8 mesh_pm_id; 665 /* Congestion Control Mode Identifier */ 666 u8 mesh_cc_id; 667 /* Synchronization Protocol Identifier */ 668 u8 mesh_sp_id; 669 /* Authentication Protocol Identifier */ 670 u8 mesh_auth_id; 671 /* Local mesh Sequence Number */ 672 u32 sn; 673 /* Last used PREQ ID */ 674 u32 preq_id; 675 atomic_t mpaths; 676 /* Timestamp of last SN update */ 677 unsigned long last_sn_update; 678 /* Time when it's ok to send next PERR */ 679 unsigned long next_perr; 680 /* Timestamp of last PREQ sent */ 681 unsigned long last_preq; 682 struct mesh_rmc *rmc; 683 spinlock_t mesh_preq_queue_lock; 684 struct mesh_preq_queue preq_queue; 685 int preq_queue_len; 686 struct mesh_stats mshstats; 687 struct mesh_config mshcfg; 688 atomic_t estab_plinks; 689 u32 mesh_seqnum; 690 bool accepting_plinks; 691 int num_gates; 692 struct beacon_data __rcu *beacon; 693 const u8 *ie; 694 u8 ie_len; 695 enum { 696 IEEE80211_MESH_SEC_NONE = 0x0, 697 IEEE80211_MESH_SEC_AUTHED = 0x1, 698 IEEE80211_MESH_SEC_SECURED = 0x2, 699 } security; 700 bool user_mpm; 701 /* Extensible Synchronization Framework */ 702 const struct ieee80211_mesh_sync_ops *sync_ops; 703 s64 sync_offset_clockdrift_max; 704 spinlock_t sync_offset_lock; 705 /* mesh power save */ 706 enum nl80211_mesh_power_mode nonpeer_pm; 707 int ps_peers_light_sleep; 708 int ps_peers_deep_sleep; 709 struct ps_data ps; 710 /* Channel Switching Support */ 711 struct mesh_csa_settings __rcu *csa; 712 enum { 713 IEEE80211_MESH_CSA_ROLE_NONE, 714 IEEE80211_MESH_CSA_ROLE_INIT, 715 IEEE80211_MESH_CSA_ROLE_REPEATER, 716 } csa_role; 717 u8 chsw_ttl; 718 u16 pre_value; 719 720 /* offset from skb->data while building IE */ 721 int meshconf_offset; 722 723 struct mesh_table *mesh_paths; 724 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 725 int mesh_paths_generation; 726 int mpp_paths_generation; 727 }; 728 729 #ifdef CONFIG_MAC80211_MESH 730 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 731 do { (msh)->mshstats.name++; } while (0) 732 #else 733 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 734 do { } while (0) 735 #endif 736 737 /** 738 * enum ieee80211_sub_if_data_flags - virtual interface flags 739 * 740 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 741 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 742 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 743 * associated stations and deliver multicast frames both 744 * back to wireless media and to the local net stack. 745 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 746 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 747 */ 748 enum ieee80211_sub_if_data_flags { 749 IEEE80211_SDATA_ALLMULTI = BIT(0), 750 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 751 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 752 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 753 IEEE80211_SDATA_IN_DRIVER = BIT(5), 754 }; 755 756 /** 757 * enum ieee80211_sdata_state_bits - virtual interface state bits 758 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 759 * mirrors netif_running() but is separate for interface type 760 * change handling while the interface is up 761 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 762 * mode, so queues are stopped 763 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 764 * to offchannel, reset when offchannel returns 765 */ 766 enum ieee80211_sdata_state_bits { 767 SDATA_STATE_RUNNING, 768 SDATA_STATE_OFFCHANNEL, 769 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 770 }; 771 772 /** 773 * enum ieee80211_chanctx_mode - channel context configuration mode 774 * 775 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 776 * multiple interfaces 777 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 778 * only by a single interface. This can be used for example for 779 * non-fixed channel IBSS. 780 */ 781 enum ieee80211_chanctx_mode { 782 IEEE80211_CHANCTX_SHARED, 783 IEEE80211_CHANCTX_EXCLUSIVE 784 }; 785 786 /** 787 * enum ieee80211_chanctx_replace_state - channel context replacement state 788 * 789 * This is used for channel context in-place reservations that require channel 790 * context switch/swap. 791 * 792 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 793 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 794 * by a (not yet registered) channel context pointed by %replace_ctx. 795 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 796 * replaces an existing channel context pointed to by %replace_ctx. 797 */ 798 enum ieee80211_chanctx_replace_state { 799 IEEE80211_CHANCTX_REPLACE_NONE, 800 IEEE80211_CHANCTX_WILL_BE_REPLACED, 801 IEEE80211_CHANCTX_REPLACES_OTHER, 802 }; 803 804 struct ieee80211_chanctx { 805 struct list_head list; 806 struct rcu_head rcu_head; 807 808 struct list_head assigned_vifs; 809 struct list_head reserved_vifs; 810 811 enum ieee80211_chanctx_replace_state replace_state; 812 struct ieee80211_chanctx *replace_ctx; 813 814 enum ieee80211_chanctx_mode mode; 815 bool driver_present; 816 817 struct ieee80211_chanctx_conf conf; 818 }; 819 820 struct mac80211_qos_map { 821 struct cfg80211_qos_map qos_map; 822 struct rcu_head rcu_head; 823 }; 824 825 enum txq_info_flags { 826 IEEE80211_TXQ_STOP, 827 IEEE80211_TXQ_AMPDU, 828 IEEE80211_TXQ_NO_AMSDU, 829 IEEE80211_TXQ_STOP_NETIF_TX, 830 }; 831 832 /** 833 * struct txq_info - per tid queue 834 * 835 * @tin: contains packets split into multiple flows 836 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 837 * a fq_flow which is already owned by a different tin 838 * @def_cvars: codel vars for @def_flow 839 * @frags: used to keep fragments created after dequeue 840 * @schedule_order: used with ieee80211_local->active_txqs 841 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 842 */ 843 struct txq_info { 844 struct fq_tin tin; 845 struct fq_flow def_flow; 846 struct codel_vars def_cvars; 847 struct codel_stats cstats; 848 struct sk_buff_head frags; 849 struct list_head schedule_order; 850 u16 schedule_round; 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 /* Fragment table for host-based reassembly */ 901 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 902 unsigned int fragment_next; 903 904 /* TID bitmap for NoAck policy */ 905 u16 noack_map; 906 907 /* bit field of ACM bits (BIT(802.1D tag)) */ 908 u8 wmm_acm; 909 910 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_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; 914 915 u16 sequence_number; 916 __be16 control_port_protocol; 917 bool control_port_no_encrypt; 918 bool control_port_over_nl80211; 919 int encrypt_headroom; 920 921 atomic_t num_tx_queued; 922 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 923 struct mac80211_qos_map __rcu *qos_map; 924 925 struct work_struct csa_finalize_work; 926 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 927 struct cfg80211_chan_def csa_chandef; 928 929 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 930 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 931 932 /* context reservation -- protected with chanctx_mtx */ 933 struct ieee80211_chanctx *reserved_chanctx; 934 struct cfg80211_chan_def reserved_chandef; 935 bool reserved_radar_required; 936 bool reserved_ready; 937 938 /* used to reconfigure hardware SM PS */ 939 struct work_struct recalc_smps; 940 941 struct work_struct work; 942 struct sk_buff_head skb_queue; 943 944 u8 needed_rx_chains; 945 enum ieee80211_smps_mode smps_mode; 946 947 int user_power_level; /* in dBm */ 948 int ap_power_level; /* in dBm */ 949 950 bool radar_required; 951 struct delayed_work dfs_cac_timer_work; 952 953 /* 954 * AP this belongs to: self in AP mode and 955 * corresponding AP in VLAN mode, NULL for 956 * all others (might be needed later in IBSS) 957 */ 958 struct ieee80211_if_ap *bss; 959 960 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 961 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 962 963 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 964 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 965 966 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 967 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 968 969 union { 970 struct ieee80211_if_ap ap; 971 struct ieee80211_if_wds wds; 972 struct ieee80211_if_vlan vlan; 973 struct ieee80211_if_managed mgd; 974 struct ieee80211_if_ibss ibss; 975 struct ieee80211_if_mesh mesh; 976 struct ieee80211_if_ocb ocb; 977 struct ieee80211_if_mntr mntr; 978 struct ieee80211_if_nan nan; 979 } u; 980 981 #ifdef CONFIG_MAC80211_DEBUGFS 982 struct { 983 struct dentry *subdir_stations; 984 struct dentry *default_unicast_key; 985 struct dentry *default_multicast_key; 986 struct dentry *default_mgmt_key; 987 } debugfs; 988 #endif 989 990 /* must be last, dynamically sized area in this! */ 991 struct ieee80211_vif vif; 992 }; 993 994 static inline 995 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 996 { 997 return container_of(p, struct ieee80211_sub_if_data, vif); 998 } 999 1000 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 1001 __acquires(&sdata->wdev.mtx) 1002 { 1003 mutex_lock(&sdata->wdev.mtx); 1004 __acquire(&sdata->wdev.mtx); 1005 } 1006 1007 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1008 __releases(&sdata->wdev.mtx) 1009 { 1010 mutex_unlock(&sdata->wdev.mtx); 1011 __release(&sdata->wdev.mtx); 1012 } 1013 1014 #define sdata_dereference(p, sdata) \ 1015 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1016 1017 static inline void 1018 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1019 { 1020 lockdep_assert_held(&sdata->wdev.mtx); 1021 } 1022 1023 static inline int 1024 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1025 { 1026 switch (chandef->width) { 1027 case NL80211_CHAN_WIDTH_5: 1028 return 2; 1029 case NL80211_CHAN_WIDTH_10: 1030 return 1; 1031 default: 1032 return 0; 1033 } 1034 } 1035 1036 static inline int 1037 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1038 { 1039 struct ieee80211_chanctx_conf *chanctx_conf; 1040 int shift = 0; 1041 1042 rcu_read_lock(); 1043 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1044 if (chanctx_conf) 1045 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1046 rcu_read_unlock(); 1047 1048 return shift; 1049 } 1050 1051 enum { 1052 IEEE80211_RX_MSG = 1, 1053 IEEE80211_TX_STATUS_MSG = 2, 1054 }; 1055 1056 enum queue_stop_reason { 1057 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1058 IEEE80211_QUEUE_STOP_REASON_PS, 1059 IEEE80211_QUEUE_STOP_REASON_CSA, 1060 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1061 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1062 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1063 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1064 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1065 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1066 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1067 1068 IEEE80211_QUEUE_STOP_REASONS, 1069 }; 1070 1071 #ifdef CONFIG_MAC80211_LEDS 1072 struct tpt_led_trigger { 1073 char name[32]; 1074 const struct ieee80211_tpt_blink *blink_table; 1075 unsigned int blink_table_len; 1076 struct timer_list timer; 1077 struct ieee80211_local *local; 1078 unsigned long prev_traffic; 1079 unsigned long tx_bytes, rx_bytes; 1080 unsigned int active, want; 1081 bool running; 1082 }; 1083 #endif 1084 1085 /** 1086 * mac80211 scan flags - currently active scan mode 1087 * 1088 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1089 * well be on the operating channel 1090 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1091 * determine if we are on the operating channel or not 1092 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1093 * channel. This should not interrupt normal traffic. 1094 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1095 * that the scan completed. 1096 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1097 * a scan complete for an aborted scan. 1098 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1099 * cancelled. 1100 */ 1101 enum { 1102 SCAN_SW_SCANNING, 1103 SCAN_HW_SCANNING, 1104 SCAN_ONCHANNEL_SCANNING, 1105 SCAN_COMPLETED, 1106 SCAN_ABORTED, 1107 SCAN_HW_CANCELLED, 1108 }; 1109 1110 /** 1111 * enum mac80211_scan_state - scan state machine states 1112 * 1113 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1114 * determines if we should keep on scanning or switch back to the 1115 * operating channel 1116 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1117 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1118 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1119 * send out data 1120 * @SCAN_RESUME: Resume the scan and scan the next channel 1121 * @SCAN_ABORT: Abort the scan and go back to operating channel 1122 */ 1123 enum mac80211_scan_state { 1124 SCAN_DECISION, 1125 SCAN_SET_CHANNEL, 1126 SCAN_SEND_PROBE, 1127 SCAN_SUSPEND, 1128 SCAN_RESUME, 1129 SCAN_ABORT, 1130 }; 1131 1132 struct ieee80211_local { 1133 /* embed the driver visible part. 1134 * don't cast (use the static inlines below), but we keep 1135 * it first anyway so they become a no-op */ 1136 struct ieee80211_hw hw; 1137 1138 struct fq fq; 1139 struct codel_vars *cvars; 1140 struct codel_params cparams; 1141 1142 /* protects active_txqs and txqi->schedule_order */ 1143 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1144 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1145 u16 schedule_round[IEEE80211_NUM_ACS]; 1146 1147 u16 airtime_flags; 1148 1149 const struct ieee80211_ops *ops; 1150 1151 /* 1152 * private workqueue to mac80211. mac80211 makes this accessible 1153 * via ieee80211_queue_work() 1154 */ 1155 struct workqueue_struct *workqueue; 1156 1157 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1158 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1159 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1160 spinlock_t queue_stop_reason_lock; 1161 1162 int open_count; 1163 int monitors, cooked_mntrs; 1164 /* number of interfaces with corresponding FIF_ flags */ 1165 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1166 fif_probe_req; 1167 int probe_req_reg; 1168 unsigned int filter_flags; /* FIF_* */ 1169 1170 bool wiphy_ciphers_allocated; 1171 1172 bool use_chanctx; 1173 1174 /* protects the aggregated multicast list and filter calls */ 1175 spinlock_t filter_lock; 1176 1177 /* used for uploading changed mc list */ 1178 struct work_struct reconfig_filter; 1179 1180 /* aggregated multicast list */ 1181 struct netdev_hw_addr_list mc_list; 1182 1183 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1184 1185 /* 1186 * suspended is true if we finished all the suspend _and_ we have 1187 * not yet come up from resume. This is to be used by mac80211 1188 * to ensure driver sanity during suspend and mac80211's own 1189 * sanity. It can eventually be used for WoW as well. 1190 */ 1191 bool suspended; 1192 1193 /* 1194 * Resuming is true while suspended, but when we're reprogramming the 1195 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1196 * again even though some other parts of the stack are still suspended 1197 * and we still drop received frames to avoid waking the stack. 1198 */ 1199 bool resuming; 1200 1201 /* 1202 * quiescing is true during the suspend process _only_ to 1203 * ease timer cancelling etc. 1204 */ 1205 bool quiescing; 1206 1207 /* device is started */ 1208 bool started; 1209 1210 /* device is during a HW reconfig */ 1211 bool in_reconfig; 1212 1213 /* wowlan is enabled -- don't reconfig on resume */ 1214 bool wowlan; 1215 1216 struct work_struct radar_detected_work; 1217 1218 /* number of RX chains the hardware has */ 1219 u8 rx_chains; 1220 1221 /* bitmap of which sbands were copied */ 1222 u8 sband_allocated; 1223 1224 int tx_headroom; /* required headroom for hardware/radiotap */ 1225 1226 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1227 * added to skb_queue will be processed, but frames in 1228 * skb_queue_unreliable may be dropped if the total length of these 1229 * queues increases over the limit. */ 1230 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1231 struct tasklet_struct tasklet; 1232 struct sk_buff_head skb_queue; 1233 struct sk_buff_head skb_queue_unreliable; 1234 1235 spinlock_t rx_path_lock; 1236 1237 /* Station data */ 1238 /* 1239 * The mutex only protects the list, hash table and 1240 * counter, reads are done with RCU. 1241 */ 1242 struct mutex sta_mtx; 1243 spinlock_t tim_lock; 1244 unsigned long num_sta; 1245 struct list_head sta_list; 1246 struct rhltable sta_hash; 1247 struct timer_list sta_cleanup; 1248 int sta_generation; 1249 1250 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1251 struct tasklet_struct tx_pending_tasklet; 1252 struct tasklet_struct wake_txqs_tasklet; 1253 1254 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1255 1256 /* number of interfaces with allmulti RX */ 1257 atomic_t iff_allmultis; 1258 1259 struct rate_control_ref *rate_ctrl; 1260 1261 struct crypto_cipher *wep_tx_tfm; 1262 struct crypto_cipher *wep_rx_tfm; 1263 u32 wep_iv; 1264 1265 /* see iface.c */ 1266 struct list_head interfaces; 1267 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1268 struct mutex iflist_mtx; 1269 1270 /* 1271 * Key mutex, protects sdata's key_list and sta_info's 1272 * key pointers (write access, they're RCU.) 1273 */ 1274 struct mutex key_mtx; 1275 1276 /* mutex for scan and work locking */ 1277 struct mutex mtx; 1278 1279 /* Scanning and BSS list */ 1280 unsigned long scanning; 1281 struct cfg80211_ssid scan_ssid; 1282 struct cfg80211_scan_request *int_scan_req; 1283 struct cfg80211_scan_request __rcu *scan_req; 1284 struct ieee80211_scan_request *hw_scan_req; 1285 struct cfg80211_chan_def scan_chandef; 1286 enum nl80211_band hw_scan_band; 1287 int scan_channel_idx; 1288 int scan_ies_len; 1289 int hw_scan_ies_bufsize; 1290 struct cfg80211_scan_info scan_info; 1291 1292 struct work_struct sched_scan_stopped_work; 1293 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1294 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1295 u8 scan_addr[ETH_ALEN]; 1296 1297 unsigned long leave_oper_channel_time; 1298 enum mac80211_scan_state next_scan_state; 1299 struct delayed_work scan_work; 1300 struct ieee80211_sub_if_data __rcu *scan_sdata; 1301 /* For backward compatibility only -- do not use */ 1302 struct cfg80211_chan_def _oper_chandef; 1303 1304 /* Temporary remain-on-channel for off-channel operations */ 1305 struct ieee80211_channel *tmp_channel; 1306 1307 /* channel contexts */ 1308 struct list_head chanctx_list; 1309 struct mutex chanctx_mtx; 1310 1311 #ifdef CONFIG_MAC80211_LEDS 1312 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1313 struct led_trigger tpt_led; 1314 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1315 atomic_t radio_led_active, tpt_led_active; 1316 struct tpt_led_trigger *tpt_led_trigger; 1317 #endif 1318 1319 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1320 /* SNMP counters */ 1321 /* dot11CountersTable */ 1322 u32 dot11TransmittedFragmentCount; 1323 u32 dot11MulticastTransmittedFrameCount; 1324 u32 dot11FailedCount; 1325 u32 dot11RetryCount; 1326 u32 dot11MultipleRetryCount; 1327 u32 dot11FrameDuplicateCount; 1328 u32 dot11ReceivedFragmentCount; 1329 u32 dot11MulticastReceivedFrameCount; 1330 u32 dot11TransmittedFrameCount; 1331 1332 /* TX/RX handler statistics */ 1333 unsigned int tx_handlers_drop; 1334 unsigned int tx_handlers_queued; 1335 unsigned int tx_handlers_drop_wep; 1336 unsigned int tx_handlers_drop_not_assoc; 1337 unsigned int tx_handlers_drop_unauth_port; 1338 unsigned int rx_handlers_drop; 1339 unsigned int rx_handlers_queued; 1340 unsigned int rx_handlers_drop_nullfunc; 1341 unsigned int rx_handlers_drop_defrag; 1342 unsigned int tx_expand_skb_head; 1343 unsigned int tx_expand_skb_head_cloned; 1344 unsigned int rx_expand_skb_head_defrag; 1345 unsigned int rx_handlers_fragments; 1346 unsigned int tx_status_drop; 1347 #define I802_DEBUG_INC(c) (c)++ 1348 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1349 #define I802_DEBUG_INC(c) do { } while (0) 1350 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1351 1352 1353 int total_ps_buffered; /* total number of all buffered unicast and 1354 * multicast packets for power saving stations 1355 */ 1356 1357 bool pspolling; 1358 bool offchannel_ps_enabled; 1359 /* 1360 * PS can only be enabled when we have exactly one managed 1361 * interface (and monitors) in PS, this then points there. 1362 */ 1363 struct ieee80211_sub_if_data *ps_sdata; 1364 struct work_struct dynamic_ps_enable_work; 1365 struct work_struct dynamic_ps_disable_work; 1366 struct timer_list dynamic_ps_timer; 1367 struct notifier_block ifa_notifier; 1368 struct notifier_block ifa6_notifier; 1369 1370 /* 1371 * The dynamic ps timeout configured from user space via WEXT - 1372 * this will override whatever chosen by mac80211 internally. 1373 */ 1374 int dynamic_ps_forced_timeout; 1375 1376 int user_power_level; /* in dBm, for all interfaces */ 1377 1378 enum ieee80211_smps_mode smps_mode; 1379 1380 struct work_struct restart_work; 1381 1382 #ifdef CONFIG_MAC80211_DEBUGFS 1383 struct local_debugfsdentries { 1384 struct dentry *rcdir; 1385 struct dentry *keys; 1386 } debugfs; 1387 #endif 1388 1389 /* 1390 * Remain-on-channel support 1391 */ 1392 struct delayed_work roc_work; 1393 struct list_head roc_list; 1394 struct work_struct hw_roc_start, hw_roc_done; 1395 unsigned long hw_roc_start_time; 1396 u64 roc_cookie_counter; 1397 1398 struct idr ack_status_frames; 1399 spinlock_t ack_status_lock; 1400 1401 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1402 1403 /* virtual monitor interface */ 1404 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1405 struct cfg80211_chan_def monitor_chandef; 1406 1407 /* extended capabilities provided by mac80211 */ 1408 u8 ext_capa[8]; 1409 1410 /* TDLS channel switch */ 1411 struct work_struct tdls_chsw_work; 1412 struct sk_buff_head skb_queue_tdls_chsw; 1413 }; 1414 1415 static inline struct ieee80211_sub_if_data * 1416 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1417 { 1418 return netdev_priv(dev); 1419 } 1420 1421 static inline struct ieee80211_sub_if_data * 1422 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1423 { 1424 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1425 } 1426 1427 static inline struct ieee80211_supported_band * 1428 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1429 { 1430 struct ieee80211_local *local = sdata->local; 1431 struct ieee80211_chanctx_conf *chanctx_conf; 1432 enum nl80211_band band; 1433 1434 rcu_read_lock(); 1435 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1436 1437 if (WARN_ON(!chanctx_conf)) { 1438 rcu_read_unlock(); 1439 return NULL; 1440 } 1441 1442 band = chanctx_conf->def.chan->band; 1443 rcu_read_unlock(); 1444 1445 return local->hw.wiphy->bands[band]; 1446 } 1447 1448 /* this struct holds the value parsing from channel switch IE */ 1449 struct ieee80211_csa_ie { 1450 struct cfg80211_chan_def chandef; 1451 u8 mode; 1452 u8 count; 1453 u8 ttl; 1454 u16 pre_value; 1455 u16 reason_code; 1456 u32 max_switch_time; 1457 }; 1458 1459 /* Parsed Information Elements */ 1460 struct ieee802_11_elems { 1461 const u8 *ie_start; 1462 size_t total_len; 1463 1464 /* pointers to IEs */ 1465 const struct ieee80211_tdls_lnkie *lnk_id; 1466 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1467 const u8 *ext_capab; 1468 const u8 *ssid; 1469 const u8 *supp_rates; 1470 const u8 *ds_params; 1471 const struct ieee80211_tim_ie *tim; 1472 const u8 *challenge; 1473 const u8 *rsn; 1474 const u8 *erp_info; 1475 const u8 *ext_supp_rates; 1476 const u8 *wmm_info; 1477 const u8 *wmm_param; 1478 const struct ieee80211_ht_cap *ht_cap_elem; 1479 const struct ieee80211_ht_operation *ht_operation; 1480 const struct ieee80211_vht_cap *vht_cap_elem; 1481 const struct ieee80211_vht_operation *vht_operation; 1482 const struct ieee80211_meshconf_ie *mesh_config; 1483 const u8 *he_cap; 1484 const struct ieee80211_he_operation *he_operation; 1485 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1486 const u8 *uora_element; 1487 const u8 *mesh_id; 1488 const u8 *peering; 1489 const __le16 *awake_window; 1490 const u8 *preq; 1491 const u8 *prep; 1492 const u8 *perr; 1493 const struct ieee80211_rann_ie *rann; 1494 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1495 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1496 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1497 const u8 *max_channel_switch_time; 1498 const u8 *country_elem; 1499 const u8 *pwr_constr_elem; 1500 const u8 *cisco_dtpc_elem; 1501 const struct ieee80211_timeout_interval_ie *timeout_int; 1502 const u8 *opmode_notif; 1503 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1504 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1505 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1506 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1507 const struct ieee80211_bssid_index *bssid_index; 1508 const u8 *nontransmitted_bssid_profile; 1509 u8 max_bssid_indicator; 1510 u8 dtim_count; 1511 u8 dtim_period; 1512 1513 /* length of them, respectively */ 1514 u8 ext_capab_len; 1515 u8 ssid_len; 1516 u8 supp_rates_len; 1517 u8 tim_len; 1518 u8 challenge_len; 1519 u8 rsn_len; 1520 u8 ext_supp_rates_len; 1521 u8 wmm_info_len; 1522 u8 wmm_param_len; 1523 u8 he_cap_len; 1524 u8 mesh_id_len; 1525 u8 peering_len; 1526 u8 preq_len; 1527 u8 prep_len; 1528 u8 perr_len; 1529 u8 country_elem_len; 1530 u8 bssid_index_len; 1531 1532 /* whether a parse error occurred while retrieving these elements */ 1533 bool parse_error; 1534 }; 1535 1536 static inline struct ieee80211_local *hw_to_local( 1537 struct ieee80211_hw *hw) 1538 { 1539 return container_of(hw, struct ieee80211_local, hw); 1540 } 1541 1542 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1543 { 1544 return container_of(txq, struct txq_info, txq); 1545 } 1546 1547 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1548 { 1549 struct txq_info *txqi = to_txq_info(txq); 1550 1551 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1552 } 1553 1554 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1555 { 1556 return ether_addr_equal(raddr, addr) || 1557 is_broadcast_ether_addr(raddr); 1558 } 1559 1560 static inline bool 1561 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1562 { 1563 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1564 status->flag & RX_FLAG_MACTIME_END); 1565 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1566 return true; 1567 /* can't handle non-legacy preamble yet */ 1568 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1569 status->encoding == RX_ENC_LEGACY) 1570 return true; 1571 return false; 1572 } 1573 1574 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1575 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1576 1577 /* This function returns the number of multicast stations connected to this 1578 * interface. It returns -1 if that number is not tracked, that is for netdevs 1579 * not in AP or AP_VLAN mode or when using 4addr. 1580 */ 1581 static inline int 1582 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1583 { 1584 if (sdata->vif.type == NL80211_IFTYPE_AP) 1585 return atomic_read(&sdata->u.ap.num_mcast_sta); 1586 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1587 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1588 return -1; 1589 } 1590 1591 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1592 struct ieee80211_rx_status *status, 1593 unsigned int mpdu_len, 1594 unsigned int mpdu_offset); 1595 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1596 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1597 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1598 u32 changed); 1599 void ieee80211_configure_filter(struct ieee80211_local *local); 1600 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1601 1602 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1603 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1604 u64 *cookie, gfp_t gfp); 1605 1606 void ieee80211_check_fast_rx(struct sta_info *sta); 1607 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1608 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1609 void ieee80211_clear_fast_rx(struct sta_info *sta); 1610 1611 /* STA code */ 1612 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1613 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1614 struct cfg80211_auth_request *req); 1615 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1616 struct cfg80211_assoc_request *req); 1617 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1618 struct cfg80211_deauth_request *req); 1619 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1620 struct cfg80211_disassoc_request *req); 1621 void ieee80211_send_pspoll(struct ieee80211_local *local, 1622 struct ieee80211_sub_if_data *sdata); 1623 void ieee80211_recalc_ps(struct ieee80211_local *local); 1624 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1625 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1626 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1627 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1628 struct sk_buff *skb); 1629 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1630 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1631 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1632 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1633 __le16 fc, bool acked); 1634 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1635 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1636 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1637 1638 /* IBSS code */ 1639 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1640 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1641 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1642 const u8 *bssid, const u8 *addr, u32 supp_rates); 1643 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1644 struct cfg80211_ibss_params *params); 1645 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1646 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1647 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1648 struct sk_buff *skb); 1649 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1650 struct cfg80211_csa_settings *csa_settings); 1651 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1652 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1653 1654 /* OCB code */ 1655 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1656 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1657 const u8 *bssid, const u8 *addr, u32 supp_rates); 1658 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1659 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1660 struct ocb_setup *setup); 1661 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1662 1663 /* mesh code */ 1664 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1665 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1666 struct sk_buff *skb); 1667 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1668 struct cfg80211_csa_settings *csa_settings); 1669 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1670 1671 /* scan/BSS handling */ 1672 void ieee80211_scan_work(struct work_struct *work); 1673 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1674 const u8 *ssid, u8 ssid_len, 1675 struct ieee80211_channel **channels, 1676 unsigned int n_channels, 1677 enum nl80211_bss_scan_width scan_width); 1678 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1679 struct cfg80211_scan_request *req); 1680 void ieee80211_scan_cancel(struct ieee80211_local *local); 1681 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1682 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1683 1684 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1685 struct ieee80211_bss * 1686 ieee80211_bss_info_update(struct ieee80211_local *local, 1687 struct ieee80211_rx_status *rx_status, 1688 struct ieee80211_mgmt *mgmt, 1689 size_t len, 1690 struct ieee80211_channel *channel); 1691 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1692 struct ieee80211_bss *bss); 1693 1694 /* scheduled scan handling */ 1695 int 1696 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1697 struct cfg80211_sched_scan_request *req); 1698 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1699 struct cfg80211_sched_scan_request *req); 1700 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1701 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1702 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1703 1704 /* off-channel/mgmt-tx */ 1705 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1706 void ieee80211_offchannel_return(struct ieee80211_local *local); 1707 void ieee80211_roc_setup(struct ieee80211_local *local); 1708 void ieee80211_start_next_roc(struct ieee80211_local *local); 1709 void ieee80211_roc_purge(struct ieee80211_local *local, 1710 struct ieee80211_sub_if_data *sdata); 1711 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1712 struct ieee80211_channel *chan, 1713 unsigned int duration, u64 *cookie); 1714 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1715 struct wireless_dev *wdev, u64 cookie); 1716 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1717 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1718 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1719 struct wireless_dev *wdev, u64 cookie); 1720 1721 /* channel switch handling */ 1722 void ieee80211_csa_finalize_work(struct work_struct *work); 1723 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1724 struct cfg80211_csa_settings *params); 1725 1726 /* interface handling */ 1727 int ieee80211_iface_init(void); 1728 void ieee80211_iface_exit(void); 1729 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1730 unsigned char name_assign_type, 1731 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1732 struct vif_params *params); 1733 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1734 enum nl80211_iftype type); 1735 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1736 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1737 u32 ieee80211_idle_off(struct ieee80211_local *local); 1738 void ieee80211_recalc_idle(struct ieee80211_local *local); 1739 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1740 const int offset); 1741 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1742 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1743 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1744 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1745 1746 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1747 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1748 bool update_bss); 1749 1750 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1751 { 1752 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1753 } 1754 1755 /* tx handling */ 1756 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1757 void ieee80211_tx_pending(unsigned long data); 1758 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1759 struct net_device *dev); 1760 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1761 struct net_device *dev); 1762 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1763 struct net_device *dev, 1764 u32 info_flags); 1765 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1766 struct sk_buff_head *skbs); 1767 struct sk_buff * 1768 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1769 struct sk_buff *skb, u32 info_flags); 1770 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1771 struct ieee80211_supported_band *sband, 1772 int retry_count, int shift, bool send_to_cooked); 1773 1774 void ieee80211_check_fast_xmit(struct sta_info *sta); 1775 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1776 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1777 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1778 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1779 const u8 *buf, size_t len, 1780 const u8 *dest, __be16 proto, bool unencrypted); 1781 1782 /* HT */ 1783 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1784 struct ieee80211_sta_ht_cap *ht_cap); 1785 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1786 struct ieee80211_supported_band *sband, 1787 const struct ieee80211_ht_cap *ht_cap_ie, 1788 struct sta_info *sta); 1789 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1790 const u8 *da, u16 tid, 1791 u16 initiator, u16 reason_code); 1792 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1793 enum ieee80211_smps_mode smps, const u8 *da, 1794 const u8 *bssid); 1795 void ieee80211_request_smps_ap_work(struct work_struct *work); 1796 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1797 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1798 enum ieee80211_smps_mode smps_mode_new); 1799 1800 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1801 u16 initiator, u16 reason, bool stop); 1802 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1803 u16 initiator, u16 reason, bool stop); 1804 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1805 u8 dialog_token, u16 timeout, 1806 u16 start_seq_num, u16 ba_policy, u16 tid, 1807 u16 buf_size, bool tx, bool auto_seq); 1808 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1809 enum ieee80211_agg_stop_reason reason); 1810 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1811 struct sta_info *sta, 1812 struct ieee80211_mgmt *mgmt, size_t len); 1813 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1814 struct sta_info *sta, 1815 struct ieee80211_mgmt *mgmt, 1816 size_t len); 1817 void ieee80211_process_addba_request(struct ieee80211_local *local, 1818 struct sta_info *sta, 1819 struct ieee80211_mgmt *mgmt, 1820 size_t len); 1821 1822 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1823 enum ieee80211_agg_stop_reason reason); 1824 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1825 enum ieee80211_agg_stop_reason reason); 1826 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1827 struct tid_ampdu_tx *tid_tx); 1828 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1829 struct tid_ampdu_tx *tid_tx); 1830 void ieee80211_ba_session_work(struct work_struct *work); 1831 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1832 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1833 1834 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1835 enum nl80211_smps_mode 1836 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1837 1838 /* VHT */ 1839 void 1840 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1841 struct ieee80211_supported_band *sband, 1842 const struct ieee80211_vht_cap *vht_cap_ie, 1843 struct sta_info *sta); 1844 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1845 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1846 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1847 enum ieee80211_sta_rx_bandwidth 1848 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1849 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1850 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1851 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1852 struct ieee80211_mgmt *mgmt); 1853 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1854 struct sta_info *sta, u8 opmode, 1855 enum nl80211_band band); 1856 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1857 struct sta_info *sta, u8 opmode, 1858 enum nl80211_band band); 1859 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1860 struct ieee80211_sta_vht_cap *vht_cap); 1861 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1862 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1863 enum nl80211_chan_width 1864 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1865 1866 /* HE */ 1867 void 1868 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1869 struct ieee80211_supported_band *sband, 1870 const u8 *he_cap_ie, u8 he_cap_len, 1871 struct sta_info *sta); 1872 1873 /* Spectrum management */ 1874 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1875 struct ieee80211_mgmt *mgmt, 1876 size_t len); 1877 /** 1878 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1879 * @sdata: the sdata of the interface which has received the frame 1880 * @elems: parsed 802.11 elements received with the frame 1881 * @current_band: indicates the current band 1882 * @sta_flags: contains information about own capabilities and restrictions 1883 * to decide which channel switch announcements can be accepted. Only the 1884 * following subset of &enum ieee80211_sta_flags are evaluated: 1885 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1886 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1887 * %IEEE80211_STA_DISABLE_160MHZ. 1888 * @bssid: the currently connected bssid (for reporting) 1889 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1890 All of them will be filled with if success only. 1891 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1892 */ 1893 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1894 struct ieee802_11_elems *elems, 1895 enum nl80211_band current_band, 1896 u32 sta_flags, u8 *bssid, 1897 struct ieee80211_csa_ie *csa_ie); 1898 1899 /* Suspend/resume and hw reconfiguration */ 1900 int ieee80211_reconfig(struct ieee80211_local *local); 1901 void ieee80211_stop_device(struct ieee80211_local *local); 1902 1903 int __ieee80211_suspend(struct ieee80211_hw *hw, 1904 struct cfg80211_wowlan *wowlan); 1905 1906 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1907 { 1908 struct ieee80211_local *local = hw_to_local(hw); 1909 1910 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1911 !test_bit(SCAN_COMPLETED, &local->scanning), 1912 "%s: resume with hardware scan still in progress\n", 1913 wiphy_name(hw->wiphy)); 1914 1915 return ieee80211_reconfig(hw_to_local(hw)); 1916 } 1917 1918 /* utility functions/constants */ 1919 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1920 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1921 int rate, int erp, int short_preamble, 1922 int shift); 1923 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1924 struct ieee80211_tx_queue_params *qparam, 1925 int ac); 1926 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1927 bool bss_notify, bool enable_qos); 1928 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1929 struct sta_info *sta, struct sk_buff *skb, 1930 u32 txdata_flags); 1931 1932 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1933 struct sk_buff *skb, int tid, 1934 enum nl80211_band band, u32 txdata_flags); 1935 1936 static inline void 1937 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1938 struct sk_buff *skb, int tid, 1939 enum nl80211_band band, u32 txdata_flags) 1940 { 1941 rcu_read_lock(); 1942 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1943 rcu_read_unlock(); 1944 } 1945 1946 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1947 struct sk_buff *skb, int tid) 1948 { 1949 struct ieee80211_chanctx_conf *chanctx_conf; 1950 1951 rcu_read_lock(); 1952 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1953 if (WARN_ON(!chanctx_conf)) { 1954 rcu_read_unlock(); 1955 kfree_skb(skb); 1956 return; 1957 } 1958 1959 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1960 chanctx_conf->def.chan->band, 0); 1961 rcu_read_unlock(); 1962 } 1963 1964 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1965 struct sk_buff *skb) 1966 { 1967 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1968 ieee80211_tx_skb_tid(sdata, skb, 7); 1969 } 1970 1971 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1972 struct ieee802_11_elems *elems, 1973 u64 filter, u32 crc, u8 *transmitter_bssid, 1974 u8 *bss_bssid); 1975 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1976 bool action, 1977 struct ieee802_11_elems *elems, 1978 u8 *transmitter_bssid, 1979 u8 *bss_bssid) 1980 { 1981 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 1982 transmitter_bssid, bss_bssid); 1983 } 1984 1985 1986 extern const int ieee802_1d_to_ac[8]; 1987 1988 static inline int ieee80211_ac_from_tid(int tid) 1989 { 1990 return ieee802_1d_to_ac[tid & 7]; 1991 } 1992 1993 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1994 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1995 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1996 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1997 struct ieee80211_sub_if_data *sdata, 1998 bool powersave); 1999 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 2000 struct ieee80211_hdr *hdr); 2001 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2002 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2003 2004 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2005 unsigned long queues, 2006 enum queue_stop_reason reason, 2007 bool refcounted); 2008 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2009 struct ieee80211_sub_if_data *sdata, 2010 enum queue_stop_reason reason); 2011 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2012 struct ieee80211_sub_if_data *sdata, 2013 enum queue_stop_reason reason); 2014 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2015 unsigned long queues, 2016 enum queue_stop_reason reason, 2017 bool refcounted); 2018 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2019 enum queue_stop_reason reason, 2020 bool refcounted); 2021 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2022 enum queue_stop_reason reason, 2023 bool refcounted); 2024 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2025 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2026 struct sk_buff *skb); 2027 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2028 struct sk_buff_head *skbs); 2029 void ieee80211_flush_queues(struct ieee80211_local *local, 2030 struct ieee80211_sub_if_data *sdata, bool drop); 2031 void __ieee80211_flush_queues(struct ieee80211_local *local, 2032 struct ieee80211_sub_if_data *sdata, 2033 unsigned int queues, bool drop); 2034 2035 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2036 { 2037 /* 2038 * If quiescing is set, we are racing with __ieee80211_suspend. 2039 * __ieee80211_suspend flushes the workers after setting quiescing, 2040 * and we check quiescing / suspended before enqueing new workers. 2041 * We should abort the worker to avoid the races below. 2042 */ 2043 if (local->quiescing) 2044 return false; 2045 2046 /* 2047 * We might already be suspended if the following scenario occurs: 2048 * __ieee80211_suspend Control path 2049 * 2050 * if (local->quiescing) 2051 * return; 2052 * local->quiescing = true; 2053 * flush_workqueue(); 2054 * queue_work(...); 2055 * local->suspended = true; 2056 * local->quiescing = false; 2057 * worker starts running... 2058 */ 2059 if (local->suspended) 2060 return false; 2061 2062 return true; 2063 } 2064 2065 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2066 void ieee80211_txq_set_params(struct ieee80211_local *local); 2067 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2068 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2069 struct sta_info *sta, 2070 struct txq_info *txq, int tid); 2071 void ieee80211_txq_purge(struct ieee80211_local *local, 2072 struct txq_info *txqi); 2073 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2074 struct ieee80211_sub_if_data *sdata); 2075 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2076 struct txq_info *txqi); 2077 void ieee80211_wake_txqs(unsigned long data); 2078 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2079 u16 transaction, u16 auth_alg, u16 status, 2080 const u8 *extra, size_t extra_len, const u8 *bssid, 2081 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2082 u32 tx_flags); 2083 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2084 const u8 *bssid, u16 stype, u16 reason, 2085 bool send_frame, u8 *frame_buf); 2086 2087 enum { 2088 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2089 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2090 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2091 }; 2092 2093 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2094 size_t buffer_len, 2095 struct ieee80211_scan_ies *ie_desc, 2096 const u8 *ie, size_t ie_len, 2097 u8 bands_used, u32 *rate_masks, 2098 struct cfg80211_chan_def *chandef, 2099 u32 flags); 2100 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2101 const u8 *src, const u8 *dst, 2102 u32 ratemask, 2103 struct ieee80211_channel *chan, 2104 const u8 *ssid, size_t ssid_len, 2105 const u8 *ie, size_t ie_len, 2106 u32 flags); 2107 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2108 struct ieee802_11_elems *elems, 2109 enum nl80211_band band, u32 *basic_rates); 2110 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2111 enum ieee80211_smps_mode smps_mode); 2112 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2113 enum ieee80211_smps_mode smps_mode); 2114 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2115 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2116 2117 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2118 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2119 u16 cap); 2120 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2121 const struct cfg80211_chan_def *chandef, 2122 u16 prot_mode, bool rifs_mode); 2123 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2124 const struct cfg80211_chan_def *chandef); 2125 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2126 u32 cap); 2127 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2128 const struct cfg80211_chan_def *chandef); 2129 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2130 const struct ieee80211_sta_he_cap *he_cap, 2131 u8 *end); 2132 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2133 const struct ieee80211_supported_band *sband, 2134 const u8 *srates, int srates_len, u32 *rates); 2135 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2136 struct sk_buff *skb, bool need_basic, 2137 enum nl80211_band band); 2138 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2139 struct sk_buff *skb, bool need_basic, 2140 enum nl80211_band band); 2141 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2142 2143 /* channel management */ 2144 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2145 struct cfg80211_chan_def *chandef); 2146 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2147 const struct ieee80211_vht_operation *oper, 2148 const struct ieee80211_ht_operation *htop, 2149 struct cfg80211_chan_def *chandef); 2150 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2151 2152 int __must_check 2153 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2154 const struct cfg80211_chan_def *chandef, 2155 enum ieee80211_chanctx_mode mode); 2156 int __must_check 2157 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2158 const struct cfg80211_chan_def *chandef, 2159 enum ieee80211_chanctx_mode mode, 2160 bool radar_required); 2161 int __must_check 2162 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2163 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2164 2165 int __must_check 2166 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2167 const struct cfg80211_chan_def *chandef, 2168 u32 *changed); 2169 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2170 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2171 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2172 bool clear); 2173 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2174 struct ieee80211_chanctx *ctx); 2175 2176 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2177 struct ieee80211_chanctx *chanctx); 2178 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2179 struct ieee80211_chanctx *ctx); 2180 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2181 2182 void ieee80211_dfs_cac_timer(unsigned long data); 2183 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2184 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2185 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2186 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2187 struct cfg80211_csa_settings *csa_settings); 2188 2189 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2190 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2191 const struct ieee80211_cipher_scheme * 2192 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2193 enum nl80211_iftype iftype); 2194 int ieee80211_cs_headroom(struct ieee80211_local *local, 2195 struct cfg80211_crypto_settings *crypto, 2196 enum nl80211_iftype iftype); 2197 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2198 struct ieee80211_sub_if_data *sdata); 2199 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2200 const struct cfg80211_chan_def *chandef, 2201 enum ieee80211_chanctx_mode chanmode, 2202 u8 radar_detect); 2203 int ieee80211_max_num_channels(struct ieee80211_local *local); 2204 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2205 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2206 struct ieee80211_chanctx *ctx); 2207 2208 /* TDLS */ 2209 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2210 const u8 *peer, u8 action_code, u8 dialog_token, 2211 u16 status_code, u32 peer_capability, 2212 bool initiator, const u8 *extra_ies, 2213 size_t extra_ies_len); 2214 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2215 const u8 *peer, enum nl80211_tdls_operation oper); 2216 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2217 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2218 const u8 *addr, u8 oper_class, 2219 struct cfg80211_chan_def *chandef); 2220 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2221 struct net_device *dev, 2222 const u8 *addr); 2223 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2224 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2225 2226 extern const struct ethtool_ops ieee80211_ethtool_ops; 2227 2228 #ifdef CONFIG_MAC80211_NOINLINE 2229 #define debug_noinline noinline 2230 #else 2231 #define debug_noinline 2232 #endif 2233 2234 #endif /* IEEE80211_I_H */ 2235