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 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; 503 504 u8 use_4addr; 505 506 s16 p2p_noa_index; 507 508 struct ewma_beacon_signal ave_beacon_signal; 509 510 /* 511 * Number of Beacon frames used in ave_beacon_signal. This can be used 512 * to avoid generating less reliable cqm events that would be based 513 * only on couple of received frames. 514 */ 515 unsigned int count_beacon_signal; 516 517 /* Number of times beacon loss was invoked. */ 518 unsigned int beacon_loss_count; 519 520 /* 521 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 522 * that triggered a cqm event. 0 indicates that no event has been 523 * generated for the current association. 524 */ 525 int last_cqm_event_signal; 526 527 /* 528 * State variables for keeping track of RSSI of the AP currently 529 * connected to and informing driver when RSSI has gone 530 * below/above a certain threshold. 531 */ 532 int rssi_min_thold, rssi_max_thold; 533 int last_ave_beacon_signal; 534 535 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 536 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 537 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 538 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 539 540 /* TDLS support */ 541 u8 tdls_peer[ETH_ALEN] __aligned(2); 542 struct delayed_work tdls_peer_del_work; 543 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 544 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 545 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 546 bool tdls_chan_switch_prohibited; 547 bool tdls_wider_bw_prohibited; 548 549 /* WMM-AC TSPEC support */ 550 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 551 /* Use a separate work struct so that we can do something here 552 * while the sdata->work is flushing the queues, for example. 553 * otherwise, in scenarios where we hardly get any traffic out 554 * on the BE queue, but there's a lot of VO traffic, we might 555 * get stuck in a downgraded situation and flush takes forever. 556 */ 557 struct delayed_work tx_tspec_wk; 558 }; 559 560 struct ieee80211_if_ibss { 561 struct timer_list timer; 562 struct work_struct csa_connection_drop_work; 563 564 unsigned long last_scan_completed; 565 566 u32 basic_rates; 567 568 bool fixed_bssid; 569 bool fixed_channel; 570 bool privacy; 571 572 bool control_port; 573 bool userspace_handles_dfs; 574 575 u8 bssid[ETH_ALEN] __aligned(2); 576 u8 ssid[IEEE80211_MAX_SSID_LEN]; 577 u8 ssid_len, ie_len; 578 u8 *ie; 579 struct cfg80211_chan_def chandef; 580 581 unsigned long ibss_join_req; 582 /* probe response/beacon for IBSS */ 583 struct beacon_data __rcu *presp; 584 585 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 586 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 587 588 spinlock_t incomplete_lock; 589 struct list_head incomplete_stations; 590 591 enum { 592 IEEE80211_IBSS_MLME_SEARCH, 593 IEEE80211_IBSS_MLME_JOINED, 594 } state; 595 }; 596 597 /** 598 * struct ieee80211_if_ocb - OCB mode state 599 * 600 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 601 * @wrkq_flags: OCB deferred task action 602 * @incomplete_lock: delayed STA insertion lock 603 * @incomplete_stations: list of STAs waiting for delayed insertion 604 * @joined: indication if the interface is connected to an OCB network 605 */ 606 struct ieee80211_if_ocb { 607 struct timer_list housekeeping_timer; 608 unsigned long wrkq_flags; 609 610 spinlock_t incomplete_lock; 611 struct list_head incomplete_stations; 612 613 bool joined; 614 }; 615 616 /** 617 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 618 * 619 * these declarations define the interface, which enables 620 * vendor-specific mesh synchronization 621 * 622 */ 623 struct ieee802_11_elems; 624 struct ieee80211_mesh_sync_ops { 625 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 626 u16 stype, 627 struct ieee80211_mgmt *mgmt, 628 struct ieee802_11_elems *elems, 629 struct ieee80211_rx_status *rx_status); 630 631 /* should be called with beacon_data under RCU read lock */ 632 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 633 struct beacon_data *beacon); 634 /* add other framework functions here */ 635 }; 636 637 struct mesh_csa_settings { 638 struct rcu_head rcu_head; 639 struct cfg80211_csa_settings settings; 640 }; 641 642 struct ieee80211_if_mesh { 643 struct timer_list housekeeping_timer; 644 struct timer_list mesh_path_timer; 645 struct timer_list mesh_path_root_timer; 646 647 unsigned long wrkq_flags; 648 unsigned long mbss_changed; 649 650 bool userspace_handles_dfs; 651 652 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 653 size_t mesh_id_len; 654 /* Active Path Selection Protocol Identifier */ 655 u8 mesh_pp_id; 656 /* Active Path Selection Metric Identifier */ 657 u8 mesh_pm_id; 658 /* Congestion Control Mode Identifier */ 659 u8 mesh_cc_id; 660 /* Synchronization Protocol Identifier */ 661 u8 mesh_sp_id; 662 /* Authentication Protocol Identifier */ 663 u8 mesh_auth_id; 664 /* Local mesh Sequence Number */ 665 u32 sn; 666 /* Last used PREQ ID */ 667 u32 preq_id; 668 atomic_t mpaths; 669 /* Timestamp of last SN update */ 670 unsigned long last_sn_update; 671 /* Time when it's ok to send next PERR */ 672 unsigned long next_perr; 673 /* Timestamp of last PREQ sent */ 674 unsigned long last_preq; 675 struct mesh_rmc *rmc; 676 spinlock_t mesh_preq_queue_lock; 677 struct mesh_preq_queue preq_queue; 678 int preq_queue_len; 679 struct mesh_stats mshstats; 680 struct mesh_config mshcfg; 681 atomic_t estab_plinks; 682 u32 mesh_seqnum; 683 bool accepting_plinks; 684 int num_gates; 685 struct beacon_data __rcu *beacon; 686 const u8 *ie; 687 u8 ie_len; 688 enum { 689 IEEE80211_MESH_SEC_NONE = 0x0, 690 IEEE80211_MESH_SEC_AUTHED = 0x1, 691 IEEE80211_MESH_SEC_SECURED = 0x2, 692 } security; 693 bool user_mpm; 694 /* Extensible Synchronization Framework */ 695 const struct ieee80211_mesh_sync_ops *sync_ops; 696 s64 sync_offset_clockdrift_max; 697 spinlock_t sync_offset_lock; 698 /* mesh power save */ 699 enum nl80211_mesh_power_mode nonpeer_pm; 700 int ps_peers_light_sleep; 701 int ps_peers_deep_sleep; 702 struct ps_data ps; 703 /* Channel Switching Support */ 704 struct mesh_csa_settings __rcu *csa; 705 enum { 706 IEEE80211_MESH_CSA_ROLE_NONE, 707 IEEE80211_MESH_CSA_ROLE_INIT, 708 IEEE80211_MESH_CSA_ROLE_REPEATER, 709 } csa_role; 710 u8 chsw_ttl; 711 u16 pre_value; 712 713 /* offset from skb->data while building IE */ 714 int meshconf_offset; 715 716 struct mesh_table *mesh_paths; 717 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 718 int mesh_paths_generation; 719 int mpp_paths_generation; 720 }; 721 722 #ifdef CONFIG_MAC80211_MESH 723 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 724 do { (msh)->mshstats.name++; } while (0) 725 #else 726 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 727 do { } while (0) 728 #endif 729 730 /** 731 * enum ieee80211_sub_if_data_flags - virtual interface flags 732 * 733 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 734 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 735 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 736 * associated stations and deliver multicast frames both 737 * back to wireless media and to the local net stack. 738 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 739 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 740 */ 741 enum ieee80211_sub_if_data_flags { 742 IEEE80211_SDATA_ALLMULTI = BIT(0), 743 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 744 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 745 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 746 IEEE80211_SDATA_IN_DRIVER = BIT(5), 747 }; 748 749 /** 750 * enum ieee80211_sdata_state_bits - virtual interface state bits 751 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 752 * mirrors netif_running() but is separate for interface type 753 * change handling while the interface is up 754 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 755 * mode, so queues are stopped 756 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 757 * to offchannel, reset when offchannel returns 758 */ 759 enum ieee80211_sdata_state_bits { 760 SDATA_STATE_RUNNING, 761 SDATA_STATE_OFFCHANNEL, 762 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 763 }; 764 765 /** 766 * enum ieee80211_chanctx_mode - channel context configuration mode 767 * 768 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 769 * multiple interfaces 770 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 771 * only by a single interface. This can be used for example for 772 * non-fixed channel IBSS. 773 */ 774 enum ieee80211_chanctx_mode { 775 IEEE80211_CHANCTX_SHARED, 776 IEEE80211_CHANCTX_EXCLUSIVE 777 }; 778 779 /** 780 * enum ieee80211_chanctx_replace_state - channel context replacement state 781 * 782 * This is used for channel context in-place reservations that require channel 783 * context switch/swap. 784 * 785 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 786 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 787 * by a (not yet registered) channel context pointed by %replace_ctx. 788 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 789 * replaces an existing channel context pointed to by %replace_ctx. 790 */ 791 enum ieee80211_chanctx_replace_state { 792 IEEE80211_CHANCTX_REPLACE_NONE, 793 IEEE80211_CHANCTX_WILL_BE_REPLACED, 794 IEEE80211_CHANCTX_REPLACES_OTHER, 795 }; 796 797 struct ieee80211_chanctx { 798 struct list_head list; 799 struct rcu_head rcu_head; 800 801 struct list_head assigned_vifs; 802 struct list_head reserved_vifs; 803 804 enum ieee80211_chanctx_replace_state replace_state; 805 struct ieee80211_chanctx *replace_ctx; 806 807 enum ieee80211_chanctx_mode mode; 808 bool driver_present; 809 810 struct ieee80211_chanctx_conf conf; 811 }; 812 813 struct mac80211_qos_map { 814 struct cfg80211_qos_map qos_map; 815 struct rcu_head rcu_head; 816 }; 817 818 enum txq_info_flags { 819 IEEE80211_TXQ_STOP, 820 IEEE80211_TXQ_AMPDU, 821 IEEE80211_TXQ_NO_AMSDU, 822 IEEE80211_TXQ_STOP_NETIF_TX, 823 }; 824 825 /** 826 * struct txq_info - per tid queue 827 * 828 * @tin: contains packets split into multiple flows 829 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 830 * a fq_flow which is already owned by a different tin 831 * @def_cvars: codel vars for @def_flow 832 * @frags: used to keep fragments created after dequeue 833 */ 834 struct txq_info { 835 struct fq_tin tin; 836 struct fq_flow def_flow; 837 struct codel_vars def_cvars; 838 struct codel_stats cstats; 839 struct sk_buff_head frags; 840 unsigned long flags; 841 842 /* keep last! */ 843 struct ieee80211_txq txq; 844 }; 845 846 struct ieee80211_if_mntr { 847 u32 flags; 848 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 849 850 struct list_head list; 851 }; 852 853 /** 854 * struct ieee80211_if_nan - NAN state 855 * 856 * @conf: current NAN configuration 857 * @func_ids: a bitmap of available instance_id's 858 */ 859 struct ieee80211_if_nan { 860 struct cfg80211_nan_conf conf; 861 862 /* protects function_inst_ids */ 863 spinlock_t func_lock; 864 struct idr function_inst_ids; 865 }; 866 867 struct ieee80211_sub_if_data { 868 struct list_head list; 869 870 struct wireless_dev wdev; 871 872 /* keys */ 873 struct list_head key_list; 874 875 /* count for keys needing tailroom space allocation */ 876 int crypto_tx_tailroom_needed_cnt; 877 int crypto_tx_tailroom_pending_dec; 878 struct delayed_work dec_tailroom_needed_wk; 879 880 struct net_device *dev; 881 struct ieee80211_local *local; 882 883 unsigned int flags; 884 885 unsigned long state; 886 887 char name[IFNAMSIZ]; 888 889 /* Fragment table for host-based reassembly */ 890 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 891 unsigned int fragment_next; 892 893 /* TID bitmap for NoAck policy */ 894 u16 noack_map; 895 896 /* bit field of ACM bits (BIT(802.1D tag)) */ 897 u8 wmm_acm; 898 899 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 900 struct ieee80211_key __rcu *default_unicast_key; 901 struct ieee80211_key __rcu *default_multicast_key; 902 struct ieee80211_key __rcu *default_mgmt_key; 903 904 u16 sequence_number; 905 __be16 control_port_protocol; 906 bool control_port_no_encrypt; 907 bool control_port_over_nl80211; 908 int encrypt_headroom; 909 910 atomic_t num_tx_queued; 911 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 912 struct mac80211_qos_map __rcu *qos_map; 913 914 struct work_struct csa_finalize_work; 915 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 916 struct cfg80211_chan_def csa_chandef; 917 918 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 919 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 920 921 /* context reservation -- protected with chanctx_mtx */ 922 struct ieee80211_chanctx *reserved_chanctx; 923 struct cfg80211_chan_def reserved_chandef; 924 bool reserved_radar_required; 925 bool reserved_ready; 926 927 /* used to reconfigure hardware SM PS */ 928 struct work_struct recalc_smps; 929 930 struct work_struct work; 931 struct sk_buff_head skb_queue; 932 933 u8 needed_rx_chains; 934 enum ieee80211_smps_mode smps_mode; 935 936 int user_power_level; /* in dBm */ 937 int ap_power_level; /* in dBm */ 938 939 bool radar_required; 940 struct delayed_work dfs_cac_timer_work; 941 942 /* 943 * AP this belongs to: self in AP mode and 944 * corresponding AP in VLAN mode, NULL for 945 * all others (might be needed later in IBSS) 946 */ 947 struct ieee80211_if_ap *bss; 948 949 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 950 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 951 952 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 953 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 954 955 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 956 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 957 958 union { 959 struct ieee80211_if_ap ap; 960 struct ieee80211_if_wds wds; 961 struct ieee80211_if_vlan vlan; 962 struct ieee80211_if_managed mgd; 963 struct ieee80211_if_ibss ibss; 964 struct ieee80211_if_mesh mesh; 965 struct ieee80211_if_ocb ocb; 966 struct ieee80211_if_mntr mntr; 967 struct ieee80211_if_nan nan; 968 } u; 969 970 #ifdef CONFIG_MAC80211_DEBUGFS 971 struct { 972 struct dentry *subdir_stations; 973 struct dentry *default_unicast_key; 974 struct dentry *default_multicast_key; 975 struct dentry *default_mgmt_key; 976 } debugfs; 977 #endif 978 979 /* must be last, dynamically sized area in this! */ 980 struct ieee80211_vif vif; 981 }; 982 983 static inline 984 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 985 { 986 return container_of(p, struct ieee80211_sub_if_data, vif); 987 } 988 989 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 990 __acquires(&sdata->wdev.mtx) 991 { 992 mutex_lock(&sdata->wdev.mtx); 993 __acquire(&sdata->wdev.mtx); 994 } 995 996 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 997 __releases(&sdata->wdev.mtx) 998 { 999 mutex_unlock(&sdata->wdev.mtx); 1000 __release(&sdata->wdev.mtx); 1001 } 1002 1003 #define sdata_dereference(p, sdata) \ 1004 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1005 1006 static inline void 1007 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1008 { 1009 lockdep_assert_held(&sdata->wdev.mtx); 1010 } 1011 1012 static inline int 1013 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1014 { 1015 switch (chandef->width) { 1016 case NL80211_CHAN_WIDTH_5: 1017 return 2; 1018 case NL80211_CHAN_WIDTH_10: 1019 return 1; 1020 default: 1021 return 0; 1022 } 1023 } 1024 1025 static inline int 1026 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1027 { 1028 struct ieee80211_chanctx_conf *chanctx_conf; 1029 int shift = 0; 1030 1031 rcu_read_lock(); 1032 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1033 if (chanctx_conf) 1034 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1035 rcu_read_unlock(); 1036 1037 return shift; 1038 } 1039 1040 enum { 1041 IEEE80211_RX_MSG = 1, 1042 IEEE80211_TX_STATUS_MSG = 2, 1043 }; 1044 1045 enum queue_stop_reason { 1046 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1047 IEEE80211_QUEUE_STOP_REASON_PS, 1048 IEEE80211_QUEUE_STOP_REASON_CSA, 1049 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1050 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1051 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1052 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1053 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1054 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1055 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1056 1057 IEEE80211_QUEUE_STOP_REASONS, 1058 }; 1059 1060 #ifdef CONFIG_MAC80211_LEDS 1061 struct tpt_led_trigger { 1062 char name[32]; 1063 const struct ieee80211_tpt_blink *blink_table; 1064 unsigned int blink_table_len; 1065 struct timer_list timer; 1066 struct ieee80211_local *local; 1067 unsigned long prev_traffic; 1068 unsigned long tx_bytes, rx_bytes; 1069 unsigned int active, want; 1070 bool running; 1071 }; 1072 #endif 1073 1074 /** 1075 * mac80211 scan flags - currently active scan mode 1076 * 1077 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1078 * well be on the operating channel 1079 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1080 * determine if we are on the operating channel or not 1081 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1082 * channel. This should not interrupt normal traffic. 1083 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1084 * that the scan completed. 1085 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1086 * a scan complete for an aborted scan. 1087 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1088 * cancelled. 1089 */ 1090 enum { 1091 SCAN_SW_SCANNING, 1092 SCAN_HW_SCANNING, 1093 SCAN_ONCHANNEL_SCANNING, 1094 SCAN_COMPLETED, 1095 SCAN_ABORTED, 1096 SCAN_HW_CANCELLED, 1097 }; 1098 1099 /** 1100 * enum mac80211_scan_state - scan state machine states 1101 * 1102 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1103 * determines if we should keep on scanning or switch back to the 1104 * operating channel 1105 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1106 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1107 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1108 * send out data 1109 * @SCAN_RESUME: Resume the scan and scan the next channel 1110 * @SCAN_ABORT: Abort the scan and go back to operating channel 1111 */ 1112 enum mac80211_scan_state { 1113 SCAN_DECISION, 1114 SCAN_SET_CHANNEL, 1115 SCAN_SEND_PROBE, 1116 SCAN_SUSPEND, 1117 SCAN_RESUME, 1118 SCAN_ABORT, 1119 }; 1120 1121 struct ieee80211_local { 1122 /* embed the driver visible part. 1123 * don't cast (use the static inlines below), but we keep 1124 * it first anyway so they become a no-op */ 1125 struct ieee80211_hw hw; 1126 1127 struct fq fq; 1128 struct codel_vars *cvars; 1129 struct codel_params cparams; 1130 1131 const struct ieee80211_ops *ops; 1132 1133 /* 1134 * private workqueue to mac80211. mac80211 makes this accessible 1135 * via ieee80211_queue_work() 1136 */ 1137 struct workqueue_struct *workqueue; 1138 1139 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1140 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1141 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1142 spinlock_t queue_stop_reason_lock; 1143 1144 int open_count; 1145 int monitors, cooked_mntrs; 1146 /* number of interfaces with corresponding FIF_ flags */ 1147 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1148 fif_probe_req; 1149 int probe_req_reg; 1150 unsigned int filter_flags; /* FIF_* */ 1151 1152 bool wiphy_ciphers_allocated; 1153 1154 bool use_chanctx; 1155 1156 /* protects the aggregated multicast list and filter calls */ 1157 spinlock_t filter_lock; 1158 1159 /* used for uploading changed mc list */ 1160 struct work_struct reconfig_filter; 1161 1162 /* aggregated multicast list */ 1163 struct netdev_hw_addr_list mc_list; 1164 1165 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1166 1167 /* 1168 * suspended is true if we finished all the suspend _and_ we have 1169 * not yet come up from resume. This is to be used by mac80211 1170 * to ensure driver sanity during suspend and mac80211's own 1171 * sanity. It can eventually be used for WoW as well. 1172 */ 1173 bool suspended; 1174 1175 /* 1176 * Resuming is true while suspended, but when we're reprogramming the 1177 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1178 * again even though some other parts of the stack are still suspended 1179 * and we still drop received frames to avoid waking the stack. 1180 */ 1181 bool resuming; 1182 1183 /* 1184 * quiescing is true during the suspend process _only_ to 1185 * ease timer cancelling etc. 1186 */ 1187 bool quiescing; 1188 1189 /* device is started */ 1190 bool started; 1191 1192 /* device is during a HW reconfig */ 1193 bool in_reconfig; 1194 1195 /* wowlan is enabled -- don't reconfig on resume */ 1196 bool wowlan; 1197 1198 struct work_struct radar_detected_work; 1199 1200 /* number of RX chains the hardware has */ 1201 u8 rx_chains; 1202 1203 /* bitmap of which sbands were copied */ 1204 u8 sband_allocated; 1205 1206 int tx_headroom; /* required headroom for hardware/radiotap */ 1207 1208 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1209 * added to skb_queue will be processed, but frames in 1210 * skb_queue_unreliable may be dropped if the total length of these 1211 * queues increases over the limit. */ 1212 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1213 struct tasklet_struct tasklet; 1214 struct sk_buff_head skb_queue; 1215 struct sk_buff_head skb_queue_unreliable; 1216 1217 spinlock_t rx_path_lock; 1218 1219 /* Station data */ 1220 /* 1221 * The mutex only protects the list, hash table and 1222 * counter, reads are done with RCU. 1223 */ 1224 struct mutex sta_mtx; 1225 spinlock_t tim_lock; 1226 unsigned long num_sta; 1227 struct list_head sta_list; 1228 struct rhltable sta_hash; 1229 struct timer_list sta_cleanup; 1230 int sta_generation; 1231 1232 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1233 struct tasklet_struct tx_pending_tasklet; 1234 struct tasklet_struct wake_txqs_tasklet; 1235 1236 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1237 1238 /* number of interfaces with allmulti RX */ 1239 atomic_t iff_allmultis; 1240 1241 struct rate_control_ref *rate_ctrl; 1242 1243 struct crypto_cipher *wep_tx_tfm; 1244 struct crypto_cipher *wep_rx_tfm; 1245 u32 wep_iv; 1246 1247 /* see iface.c */ 1248 struct list_head interfaces; 1249 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1250 struct mutex iflist_mtx; 1251 1252 /* 1253 * Key mutex, protects sdata's key_list and sta_info's 1254 * key pointers (write access, they're RCU.) 1255 */ 1256 struct mutex key_mtx; 1257 1258 /* mutex for scan and work locking */ 1259 struct mutex mtx; 1260 1261 /* Scanning and BSS list */ 1262 unsigned long scanning; 1263 struct cfg80211_ssid scan_ssid; 1264 struct cfg80211_scan_request *int_scan_req; 1265 struct cfg80211_scan_request __rcu *scan_req; 1266 struct ieee80211_scan_request *hw_scan_req; 1267 struct cfg80211_chan_def scan_chandef; 1268 enum nl80211_band hw_scan_band; 1269 int scan_channel_idx; 1270 int scan_ies_len; 1271 int hw_scan_ies_bufsize; 1272 struct cfg80211_scan_info scan_info; 1273 1274 struct work_struct sched_scan_stopped_work; 1275 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1276 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1277 u8 scan_addr[ETH_ALEN]; 1278 1279 unsigned long leave_oper_channel_time; 1280 enum mac80211_scan_state next_scan_state; 1281 struct delayed_work scan_work; 1282 struct ieee80211_sub_if_data __rcu *scan_sdata; 1283 /* For backward compatibility only -- do not use */ 1284 struct cfg80211_chan_def _oper_chandef; 1285 1286 /* Temporary remain-on-channel for off-channel operations */ 1287 struct ieee80211_channel *tmp_channel; 1288 1289 /* channel contexts */ 1290 struct list_head chanctx_list; 1291 struct mutex chanctx_mtx; 1292 1293 #ifdef CONFIG_MAC80211_LEDS 1294 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1295 struct led_trigger tpt_led; 1296 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1297 atomic_t radio_led_active, tpt_led_active; 1298 struct tpt_led_trigger *tpt_led_trigger; 1299 #endif 1300 1301 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1302 /* SNMP counters */ 1303 /* dot11CountersTable */ 1304 u32 dot11TransmittedFragmentCount; 1305 u32 dot11MulticastTransmittedFrameCount; 1306 u32 dot11FailedCount; 1307 u32 dot11RetryCount; 1308 u32 dot11MultipleRetryCount; 1309 u32 dot11FrameDuplicateCount; 1310 u32 dot11ReceivedFragmentCount; 1311 u32 dot11MulticastReceivedFrameCount; 1312 u32 dot11TransmittedFrameCount; 1313 1314 /* TX/RX handler statistics */ 1315 unsigned int tx_handlers_drop; 1316 unsigned int tx_handlers_queued; 1317 unsigned int tx_handlers_drop_wep; 1318 unsigned int tx_handlers_drop_not_assoc; 1319 unsigned int tx_handlers_drop_unauth_port; 1320 unsigned int rx_handlers_drop; 1321 unsigned int rx_handlers_queued; 1322 unsigned int rx_handlers_drop_nullfunc; 1323 unsigned int rx_handlers_drop_defrag; 1324 unsigned int tx_expand_skb_head; 1325 unsigned int tx_expand_skb_head_cloned; 1326 unsigned int rx_expand_skb_head_defrag; 1327 unsigned int rx_handlers_fragments; 1328 unsigned int tx_status_drop; 1329 #define I802_DEBUG_INC(c) (c)++ 1330 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1331 #define I802_DEBUG_INC(c) do { } while (0) 1332 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1333 1334 1335 int total_ps_buffered; /* total number of all buffered unicast and 1336 * multicast packets for power saving stations 1337 */ 1338 1339 bool pspolling; 1340 bool offchannel_ps_enabled; 1341 /* 1342 * PS can only be enabled when we have exactly one managed 1343 * interface (and monitors) in PS, this then points there. 1344 */ 1345 struct ieee80211_sub_if_data *ps_sdata; 1346 struct work_struct dynamic_ps_enable_work; 1347 struct work_struct dynamic_ps_disable_work; 1348 struct timer_list dynamic_ps_timer; 1349 struct notifier_block ifa_notifier; 1350 struct notifier_block ifa6_notifier; 1351 1352 /* 1353 * The dynamic ps timeout configured from user space via WEXT - 1354 * this will override whatever chosen by mac80211 internally. 1355 */ 1356 int dynamic_ps_forced_timeout; 1357 1358 int user_power_level; /* in dBm, for all interfaces */ 1359 1360 enum ieee80211_smps_mode smps_mode; 1361 1362 struct work_struct restart_work; 1363 1364 #ifdef CONFIG_MAC80211_DEBUGFS 1365 struct local_debugfsdentries { 1366 struct dentry *rcdir; 1367 struct dentry *keys; 1368 } debugfs; 1369 #endif 1370 1371 /* 1372 * Remain-on-channel support 1373 */ 1374 struct delayed_work roc_work; 1375 struct list_head roc_list; 1376 struct work_struct hw_roc_start, hw_roc_done; 1377 unsigned long hw_roc_start_time; 1378 u64 roc_cookie_counter; 1379 1380 struct idr ack_status_frames; 1381 spinlock_t ack_status_lock; 1382 1383 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1384 1385 /* virtual monitor interface */ 1386 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1387 struct cfg80211_chan_def monitor_chandef; 1388 1389 /* extended capabilities provided by mac80211 */ 1390 u8 ext_capa[8]; 1391 1392 /* TDLS channel switch */ 1393 struct work_struct tdls_chsw_work; 1394 struct sk_buff_head skb_queue_tdls_chsw; 1395 }; 1396 1397 static inline struct ieee80211_sub_if_data * 1398 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1399 { 1400 return netdev_priv(dev); 1401 } 1402 1403 static inline struct ieee80211_sub_if_data * 1404 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1405 { 1406 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1407 } 1408 1409 static inline struct ieee80211_supported_band * 1410 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1411 { 1412 struct ieee80211_local *local = sdata->local; 1413 struct ieee80211_chanctx_conf *chanctx_conf; 1414 enum nl80211_band band; 1415 1416 rcu_read_lock(); 1417 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1418 1419 if (WARN_ON(!chanctx_conf)) { 1420 rcu_read_unlock(); 1421 return NULL; 1422 } 1423 1424 band = chanctx_conf->def.chan->band; 1425 rcu_read_unlock(); 1426 1427 return local->hw.wiphy->bands[band]; 1428 } 1429 1430 /* this struct holds the value parsing from channel switch IE */ 1431 struct ieee80211_csa_ie { 1432 struct cfg80211_chan_def chandef; 1433 u8 mode; 1434 u8 count; 1435 u8 ttl; 1436 u16 pre_value; 1437 u16 reason_code; 1438 }; 1439 1440 /* Parsed Information Elements */ 1441 struct ieee802_11_elems { 1442 const u8 *ie_start; 1443 size_t total_len; 1444 1445 /* pointers to IEs */ 1446 const struct ieee80211_tdls_lnkie *lnk_id; 1447 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1448 const u8 *ext_capab; 1449 const u8 *ssid; 1450 const u8 *supp_rates; 1451 const u8 *ds_params; 1452 const struct ieee80211_tim_ie *tim; 1453 const u8 *challenge; 1454 const u8 *rsn; 1455 const u8 *erp_info; 1456 const u8 *ext_supp_rates; 1457 const u8 *wmm_info; 1458 const u8 *wmm_param; 1459 const struct ieee80211_ht_cap *ht_cap_elem; 1460 const struct ieee80211_ht_operation *ht_operation; 1461 const struct ieee80211_vht_cap *vht_cap_elem; 1462 const struct ieee80211_vht_operation *vht_operation; 1463 const struct ieee80211_meshconf_ie *mesh_config; 1464 const u8 *he_cap; 1465 const struct ieee80211_he_operation *he_operation; 1466 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1467 const u8 *uora_element; 1468 const u8 *mesh_id; 1469 const u8 *peering; 1470 const __le16 *awake_window; 1471 const u8 *preq; 1472 const u8 *prep; 1473 const u8 *perr; 1474 const struct ieee80211_rann_ie *rann; 1475 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1476 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1477 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1478 const u8 *country_elem; 1479 const u8 *pwr_constr_elem; 1480 const u8 *cisco_dtpc_elem; 1481 const struct ieee80211_timeout_interval_ie *timeout_int; 1482 const u8 *opmode_notif; 1483 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1484 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1485 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1486 1487 /* length of them, respectively */ 1488 u8 ext_capab_len; 1489 u8 ssid_len; 1490 u8 supp_rates_len; 1491 u8 tim_len; 1492 u8 challenge_len; 1493 u8 rsn_len; 1494 u8 ext_supp_rates_len; 1495 u8 wmm_info_len; 1496 u8 wmm_param_len; 1497 u8 he_cap_len; 1498 u8 mesh_id_len; 1499 u8 peering_len; 1500 u8 preq_len; 1501 u8 prep_len; 1502 u8 perr_len; 1503 u8 country_elem_len; 1504 1505 /* whether a parse error occurred while retrieving these elements */ 1506 bool parse_error; 1507 }; 1508 1509 static inline struct ieee80211_local *hw_to_local( 1510 struct ieee80211_hw *hw) 1511 { 1512 return container_of(hw, struct ieee80211_local, hw); 1513 } 1514 1515 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1516 { 1517 return container_of(txq, struct txq_info, txq); 1518 } 1519 1520 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1521 { 1522 struct txq_info *txqi = to_txq_info(txq); 1523 1524 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1525 } 1526 1527 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1528 { 1529 return ether_addr_equal(raddr, addr) || 1530 is_broadcast_ether_addr(raddr); 1531 } 1532 1533 static inline bool 1534 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1535 { 1536 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1537 status->flag & RX_FLAG_MACTIME_END); 1538 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1539 return true; 1540 /* can't handle non-legacy preamble yet */ 1541 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1542 status->encoding == RX_ENC_LEGACY) 1543 return true; 1544 return false; 1545 } 1546 1547 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1548 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1549 1550 /* This function returns the number of multicast stations connected to this 1551 * interface. It returns -1 if that number is not tracked, that is for netdevs 1552 * not in AP or AP_VLAN mode or when using 4addr. 1553 */ 1554 static inline int 1555 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1556 { 1557 if (sdata->vif.type == NL80211_IFTYPE_AP) 1558 return atomic_read(&sdata->u.ap.num_mcast_sta); 1559 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1560 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1561 return -1; 1562 } 1563 1564 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1565 struct ieee80211_rx_status *status, 1566 unsigned int mpdu_len, 1567 unsigned int mpdu_offset); 1568 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1569 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1570 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1571 u32 changed); 1572 void ieee80211_configure_filter(struct ieee80211_local *local); 1573 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1574 1575 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1576 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1577 u64 *cookie, gfp_t gfp); 1578 1579 void ieee80211_check_fast_rx(struct sta_info *sta); 1580 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1581 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1582 void ieee80211_clear_fast_rx(struct sta_info *sta); 1583 1584 /* STA code */ 1585 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1586 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1587 struct cfg80211_auth_request *req); 1588 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1589 struct cfg80211_assoc_request *req); 1590 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1591 struct cfg80211_deauth_request *req); 1592 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1593 struct cfg80211_disassoc_request *req); 1594 void ieee80211_send_pspoll(struct ieee80211_local *local, 1595 struct ieee80211_sub_if_data *sdata); 1596 void ieee80211_recalc_ps(struct ieee80211_local *local); 1597 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1598 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1599 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1600 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1601 struct sk_buff *skb); 1602 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1603 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1604 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1605 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1606 __le16 fc, bool acked); 1607 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1608 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1609 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1610 1611 /* IBSS code */ 1612 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1613 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1614 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1615 const u8 *bssid, const u8 *addr, u32 supp_rates); 1616 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1617 struct cfg80211_ibss_params *params); 1618 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1619 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1620 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1621 struct sk_buff *skb); 1622 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1623 struct cfg80211_csa_settings *csa_settings); 1624 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1625 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1626 1627 /* OCB code */ 1628 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1629 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1630 const u8 *bssid, const u8 *addr, u32 supp_rates); 1631 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1632 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1633 struct ocb_setup *setup); 1634 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1635 1636 /* mesh code */ 1637 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1638 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1639 struct sk_buff *skb); 1640 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1641 struct cfg80211_csa_settings *csa_settings); 1642 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1643 1644 /* scan/BSS handling */ 1645 void ieee80211_scan_work(struct work_struct *work); 1646 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1647 const u8 *ssid, u8 ssid_len, 1648 struct ieee80211_channel **channels, 1649 unsigned int n_channels, 1650 enum nl80211_bss_scan_width scan_width); 1651 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1652 struct cfg80211_scan_request *req); 1653 void ieee80211_scan_cancel(struct ieee80211_local *local); 1654 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1655 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1656 1657 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1658 struct ieee80211_bss * 1659 ieee80211_bss_info_update(struct ieee80211_local *local, 1660 struct ieee80211_rx_status *rx_status, 1661 struct ieee80211_mgmt *mgmt, 1662 size_t len, 1663 struct ieee802_11_elems *elems, 1664 struct ieee80211_channel *channel); 1665 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1666 struct ieee80211_bss *bss); 1667 1668 /* scheduled scan handling */ 1669 int 1670 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1671 struct cfg80211_sched_scan_request *req); 1672 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1673 struct cfg80211_sched_scan_request *req); 1674 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1675 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1676 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1677 1678 /* off-channel/mgmt-tx */ 1679 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1680 void ieee80211_offchannel_return(struct ieee80211_local *local); 1681 void ieee80211_roc_setup(struct ieee80211_local *local); 1682 void ieee80211_start_next_roc(struct ieee80211_local *local); 1683 void ieee80211_roc_purge(struct ieee80211_local *local, 1684 struct ieee80211_sub_if_data *sdata); 1685 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1686 struct ieee80211_channel *chan, 1687 unsigned int duration, u64 *cookie); 1688 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1689 struct wireless_dev *wdev, u64 cookie); 1690 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1691 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1692 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1693 struct wireless_dev *wdev, u64 cookie); 1694 1695 /* channel switch handling */ 1696 void ieee80211_csa_finalize_work(struct work_struct *work); 1697 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1698 struct cfg80211_csa_settings *params); 1699 1700 /* interface handling */ 1701 int ieee80211_iface_init(void); 1702 void ieee80211_iface_exit(void); 1703 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1704 unsigned char name_assign_type, 1705 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1706 struct vif_params *params); 1707 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1708 enum nl80211_iftype type); 1709 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1710 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1711 u32 ieee80211_idle_off(struct ieee80211_local *local); 1712 void ieee80211_recalc_idle(struct ieee80211_local *local); 1713 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1714 const int offset); 1715 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1716 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1717 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1718 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1719 1720 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1721 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1722 bool update_bss); 1723 1724 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1725 { 1726 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1727 } 1728 1729 /* tx handling */ 1730 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1731 void ieee80211_tx_pending(unsigned long data); 1732 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1733 struct net_device *dev); 1734 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1735 struct net_device *dev); 1736 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1737 struct net_device *dev, 1738 u32 info_flags); 1739 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1740 struct sk_buff_head *skbs); 1741 struct sk_buff * 1742 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1743 struct sk_buff *skb, u32 info_flags); 1744 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1745 struct ieee80211_supported_band *sband, 1746 int retry_count, int shift, bool send_to_cooked); 1747 1748 void ieee80211_check_fast_xmit(struct sta_info *sta); 1749 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1750 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1751 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1752 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1753 const u8 *buf, size_t len, 1754 const u8 *dest, __be16 proto, bool unencrypted); 1755 1756 /* HT */ 1757 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1758 struct ieee80211_sta_ht_cap *ht_cap); 1759 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1760 struct ieee80211_supported_band *sband, 1761 const struct ieee80211_ht_cap *ht_cap_ie, 1762 struct sta_info *sta); 1763 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1764 const u8 *da, u16 tid, 1765 u16 initiator, u16 reason_code); 1766 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1767 enum ieee80211_smps_mode smps, const u8 *da, 1768 const u8 *bssid); 1769 void ieee80211_request_smps_ap_work(struct work_struct *work); 1770 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1771 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1772 enum ieee80211_smps_mode smps_mode_new); 1773 1774 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1775 u16 initiator, u16 reason, bool stop); 1776 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1777 u16 initiator, u16 reason, bool stop); 1778 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1779 u8 dialog_token, u16 timeout, 1780 u16 start_seq_num, u16 ba_policy, u16 tid, 1781 u16 buf_size, bool tx, bool auto_seq); 1782 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1783 enum ieee80211_agg_stop_reason reason); 1784 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1785 struct sta_info *sta, 1786 struct ieee80211_mgmt *mgmt, size_t len); 1787 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1788 struct sta_info *sta, 1789 struct ieee80211_mgmt *mgmt, 1790 size_t len); 1791 void ieee80211_process_addba_request(struct ieee80211_local *local, 1792 struct sta_info *sta, 1793 struct ieee80211_mgmt *mgmt, 1794 size_t len); 1795 1796 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1797 enum ieee80211_agg_stop_reason reason); 1798 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1799 enum ieee80211_agg_stop_reason reason); 1800 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1801 struct tid_ampdu_tx *tid_tx); 1802 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1803 struct tid_ampdu_tx *tid_tx); 1804 void ieee80211_ba_session_work(struct work_struct *work); 1805 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1806 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1807 1808 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1809 enum nl80211_smps_mode 1810 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1811 1812 /* VHT */ 1813 void 1814 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1815 struct ieee80211_supported_band *sband, 1816 const struct ieee80211_vht_cap *vht_cap_ie, 1817 struct sta_info *sta); 1818 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1819 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1820 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1821 enum ieee80211_sta_rx_bandwidth 1822 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1823 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1824 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1825 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1826 struct ieee80211_mgmt *mgmt); 1827 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1828 struct sta_info *sta, u8 opmode, 1829 enum nl80211_band band); 1830 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1831 struct sta_info *sta, u8 opmode, 1832 enum nl80211_band band); 1833 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1834 struct ieee80211_sta_vht_cap *vht_cap); 1835 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1836 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1837 enum nl80211_chan_width 1838 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1839 1840 /* HE */ 1841 void 1842 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1843 struct ieee80211_supported_band *sband, 1844 const u8 *he_cap_ie, u8 he_cap_len, 1845 struct sta_info *sta); 1846 1847 /* Spectrum management */ 1848 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1849 struct ieee80211_mgmt *mgmt, 1850 size_t len); 1851 /** 1852 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1853 * @sdata: the sdata of the interface which has received the frame 1854 * @elems: parsed 802.11 elements received with the frame 1855 * @current_band: indicates the current band 1856 * @sta_flags: contains information about own capabilities and restrictions 1857 * to decide which channel switch announcements can be accepted. Only the 1858 * following subset of &enum ieee80211_sta_flags are evaluated: 1859 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1860 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1861 * %IEEE80211_STA_DISABLE_160MHZ. 1862 * @bssid: the currently connected bssid (for reporting) 1863 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1864 All of them will be filled with if success only. 1865 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1866 */ 1867 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1868 struct ieee802_11_elems *elems, 1869 enum nl80211_band current_band, 1870 u32 sta_flags, u8 *bssid, 1871 struct ieee80211_csa_ie *csa_ie); 1872 1873 /* Suspend/resume and hw reconfiguration */ 1874 int ieee80211_reconfig(struct ieee80211_local *local); 1875 void ieee80211_stop_device(struct ieee80211_local *local); 1876 1877 int __ieee80211_suspend(struct ieee80211_hw *hw, 1878 struct cfg80211_wowlan *wowlan); 1879 1880 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1881 { 1882 struct ieee80211_local *local = hw_to_local(hw); 1883 1884 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1885 !test_bit(SCAN_COMPLETED, &local->scanning), 1886 "%s: resume with hardware scan still in progress\n", 1887 wiphy_name(hw->wiphy)); 1888 1889 return ieee80211_reconfig(hw_to_local(hw)); 1890 } 1891 1892 /* utility functions/constants */ 1893 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1894 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1895 int rate, int erp, int short_preamble, 1896 int shift); 1897 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1898 struct ieee80211_tx_queue_params *qparam, 1899 int ac); 1900 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1901 bool bss_notify, bool enable_qos); 1902 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1903 struct sta_info *sta, struct sk_buff *skb, 1904 u32 txdata_flags); 1905 1906 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1907 struct sk_buff *skb, int tid, 1908 enum nl80211_band band, u32 txdata_flags); 1909 1910 static inline void 1911 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1912 struct sk_buff *skb, int tid, 1913 enum nl80211_band band, u32 txdata_flags) 1914 { 1915 rcu_read_lock(); 1916 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1917 rcu_read_unlock(); 1918 } 1919 1920 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1921 struct sk_buff *skb, int tid) 1922 { 1923 struct ieee80211_chanctx_conf *chanctx_conf; 1924 1925 rcu_read_lock(); 1926 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1927 if (WARN_ON(!chanctx_conf)) { 1928 rcu_read_unlock(); 1929 kfree_skb(skb); 1930 return; 1931 } 1932 1933 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1934 chanctx_conf->def.chan->band, 0); 1935 rcu_read_unlock(); 1936 } 1937 1938 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1939 struct sk_buff *skb) 1940 { 1941 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1942 ieee80211_tx_skb_tid(sdata, skb, 7); 1943 } 1944 1945 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1946 struct ieee802_11_elems *elems, 1947 u64 filter, u32 crc); 1948 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1949 bool action, 1950 struct ieee802_11_elems *elems) 1951 { 1952 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1953 } 1954 1955 1956 extern const int ieee802_1d_to_ac[8]; 1957 1958 static inline int ieee80211_ac_from_tid(int tid) 1959 { 1960 return ieee802_1d_to_ac[tid & 7]; 1961 } 1962 1963 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1964 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1965 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1966 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1967 struct ieee80211_sub_if_data *sdata, 1968 bool powersave); 1969 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1970 struct ieee80211_hdr *hdr); 1971 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1972 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1973 1974 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1975 unsigned long queues, 1976 enum queue_stop_reason reason, 1977 bool refcounted); 1978 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1979 struct ieee80211_sub_if_data *sdata, 1980 enum queue_stop_reason reason); 1981 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1982 struct ieee80211_sub_if_data *sdata, 1983 enum queue_stop_reason reason); 1984 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1985 unsigned long queues, 1986 enum queue_stop_reason reason, 1987 bool refcounted); 1988 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1989 enum queue_stop_reason reason, 1990 bool refcounted); 1991 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1992 enum queue_stop_reason reason, 1993 bool refcounted); 1994 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1995 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1996 struct sk_buff *skb); 1997 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1998 struct sk_buff_head *skbs); 1999 void ieee80211_flush_queues(struct ieee80211_local *local, 2000 struct ieee80211_sub_if_data *sdata, bool drop); 2001 void __ieee80211_flush_queues(struct ieee80211_local *local, 2002 struct ieee80211_sub_if_data *sdata, 2003 unsigned int queues, bool drop); 2004 2005 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2006 { 2007 /* 2008 * If quiescing is set, we are racing with __ieee80211_suspend. 2009 * __ieee80211_suspend flushes the workers after setting quiescing, 2010 * and we check quiescing / suspended before enqueing new workers. 2011 * We should abort the worker to avoid the races below. 2012 */ 2013 if (local->quiescing) 2014 return false; 2015 2016 /* 2017 * We might already be suspended if the following scenario occurs: 2018 * __ieee80211_suspend Control path 2019 * 2020 * if (local->quiescing) 2021 * return; 2022 * local->quiescing = true; 2023 * flush_workqueue(); 2024 * queue_work(...); 2025 * local->suspended = true; 2026 * local->quiescing = false; 2027 * worker starts running... 2028 */ 2029 if (local->suspended) 2030 return false; 2031 2032 return true; 2033 } 2034 2035 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2036 void ieee80211_txq_set_params(struct ieee80211_local *local); 2037 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2038 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2039 struct sta_info *sta, 2040 struct txq_info *txq, int tid); 2041 void ieee80211_txq_purge(struct ieee80211_local *local, 2042 struct txq_info *txqi); 2043 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2044 struct ieee80211_sub_if_data *sdata); 2045 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2046 struct txq_info *txqi); 2047 void ieee80211_wake_txqs(unsigned long data); 2048 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2049 u16 transaction, u16 auth_alg, u16 status, 2050 const u8 *extra, size_t extra_len, const u8 *bssid, 2051 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2052 u32 tx_flags); 2053 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2054 const u8 *bssid, u16 stype, u16 reason, 2055 bool send_frame, u8 *frame_buf); 2056 2057 enum { 2058 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2059 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2060 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2061 }; 2062 2063 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2064 size_t buffer_len, 2065 struct ieee80211_scan_ies *ie_desc, 2066 const u8 *ie, size_t ie_len, 2067 u8 bands_used, u32 *rate_masks, 2068 struct cfg80211_chan_def *chandef, 2069 u32 flags); 2070 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2071 const u8 *src, const u8 *dst, 2072 u32 ratemask, 2073 struct ieee80211_channel *chan, 2074 const u8 *ssid, size_t ssid_len, 2075 const u8 *ie, size_t ie_len, 2076 u32 flags); 2077 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2078 struct ieee802_11_elems *elems, 2079 enum nl80211_band band, u32 *basic_rates); 2080 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2081 enum ieee80211_smps_mode smps_mode); 2082 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2083 enum ieee80211_smps_mode smps_mode); 2084 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2085 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2086 2087 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2088 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2089 u16 cap); 2090 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2091 const struct cfg80211_chan_def *chandef, 2092 u16 prot_mode, bool rifs_mode); 2093 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2094 const struct cfg80211_chan_def *chandef); 2095 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2096 u32 cap); 2097 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2098 const struct cfg80211_chan_def *chandef); 2099 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2100 const struct ieee80211_sta_he_cap *he_cap, 2101 u8 *end); 2102 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2103 const struct ieee80211_supported_band *sband, 2104 const u8 *srates, int srates_len, u32 *rates); 2105 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2106 struct sk_buff *skb, bool need_basic, 2107 enum nl80211_band band); 2108 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2109 struct sk_buff *skb, bool need_basic, 2110 enum nl80211_band band); 2111 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2112 2113 /* channel management */ 2114 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2115 struct cfg80211_chan_def *chandef); 2116 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2117 const struct ieee80211_vht_operation *oper, 2118 const struct ieee80211_ht_operation *htop, 2119 struct cfg80211_chan_def *chandef); 2120 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2121 2122 int __must_check 2123 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2124 const struct cfg80211_chan_def *chandef, 2125 enum ieee80211_chanctx_mode mode); 2126 int __must_check 2127 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2128 const struct cfg80211_chan_def *chandef, 2129 enum ieee80211_chanctx_mode mode, 2130 bool radar_required); 2131 int __must_check 2132 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2133 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2134 2135 int __must_check 2136 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2137 const struct cfg80211_chan_def *chandef, 2138 u32 *changed); 2139 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2140 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2141 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2142 bool clear); 2143 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2144 struct ieee80211_chanctx *ctx); 2145 2146 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2147 struct ieee80211_chanctx *chanctx); 2148 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2149 struct ieee80211_chanctx *ctx); 2150 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2151 2152 void ieee80211_dfs_cac_timer(unsigned long data); 2153 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2154 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2155 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2156 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2157 struct cfg80211_csa_settings *csa_settings); 2158 2159 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2160 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2161 const struct ieee80211_cipher_scheme * 2162 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2163 enum nl80211_iftype iftype); 2164 int ieee80211_cs_headroom(struct ieee80211_local *local, 2165 struct cfg80211_crypto_settings *crypto, 2166 enum nl80211_iftype iftype); 2167 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2168 struct ieee80211_sub_if_data *sdata); 2169 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2170 const struct cfg80211_chan_def *chandef, 2171 enum ieee80211_chanctx_mode chanmode, 2172 u8 radar_detect); 2173 int ieee80211_max_num_channels(struct ieee80211_local *local); 2174 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2175 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2176 struct ieee80211_chanctx *ctx); 2177 2178 /* TDLS */ 2179 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2180 const u8 *peer, u8 action_code, u8 dialog_token, 2181 u16 status_code, u32 peer_capability, 2182 bool initiator, const u8 *extra_ies, 2183 size_t extra_ies_len); 2184 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2185 const u8 *peer, enum nl80211_tdls_operation oper); 2186 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2187 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2188 const u8 *addr, u8 oper_class, 2189 struct cfg80211_chan_def *chandef); 2190 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2191 struct net_device *dev, 2192 const u8 *addr); 2193 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2194 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2195 2196 extern const struct ethtool_ops ieee80211_ethtool_ops; 2197 2198 #ifdef CONFIG_MAC80211_NOINLINE 2199 #define debug_noinline noinline 2200 #else 2201 #define debug_noinline 2202 #endif 2203 2204 #endif /* IEEE80211_I_H */ 2205