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 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 }; 560 561 struct ieee80211_if_ibss { 562 struct timer_list timer; 563 struct work_struct csa_connection_drop_work; 564 565 unsigned long last_scan_completed; 566 567 u32 basic_rates; 568 569 bool fixed_bssid; 570 bool fixed_channel; 571 bool privacy; 572 573 bool control_port; 574 bool userspace_handles_dfs; 575 576 u8 bssid[ETH_ALEN] __aligned(2); 577 u8 ssid[IEEE80211_MAX_SSID_LEN]; 578 u8 ssid_len, ie_len; 579 u8 *ie; 580 struct cfg80211_chan_def chandef; 581 582 unsigned long ibss_join_req; 583 /* probe response/beacon for IBSS */ 584 struct beacon_data __rcu *presp; 585 586 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 587 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 588 589 spinlock_t incomplete_lock; 590 struct list_head incomplete_stations; 591 592 enum { 593 IEEE80211_IBSS_MLME_SEARCH, 594 IEEE80211_IBSS_MLME_JOINED, 595 } state; 596 }; 597 598 /** 599 * struct ieee80211_if_ocb - OCB mode state 600 * 601 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 602 * @wrkq_flags: OCB deferred task action 603 * @incomplete_lock: delayed STA insertion lock 604 * @incomplete_stations: list of STAs waiting for delayed insertion 605 * @joined: indication if the interface is connected to an OCB network 606 */ 607 struct ieee80211_if_ocb { 608 struct timer_list housekeeping_timer; 609 unsigned long wrkq_flags; 610 611 spinlock_t incomplete_lock; 612 struct list_head incomplete_stations; 613 614 bool joined; 615 }; 616 617 /** 618 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 619 * 620 * these declarations define the interface, which enables 621 * vendor-specific mesh synchronization 622 * 623 */ 624 struct ieee802_11_elems; 625 struct ieee80211_mesh_sync_ops { 626 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 627 u16 stype, 628 struct ieee80211_mgmt *mgmt, 629 struct ieee802_11_elems *elems, 630 struct ieee80211_rx_status *rx_status); 631 632 /* should be called with beacon_data under RCU read lock */ 633 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 634 struct beacon_data *beacon); 635 /* add other framework functions here */ 636 }; 637 638 struct mesh_csa_settings { 639 struct rcu_head rcu_head; 640 struct cfg80211_csa_settings settings; 641 }; 642 643 struct ieee80211_if_mesh { 644 struct timer_list housekeeping_timer; 645 struct timer_list mesh_path_timer; 646 struct timer_list mesh_path_root_timer; 647 648 unsigned long wrkq_flags; 649 unsigned long mbss_changed; 650 651 bool userspace_handles_dfs; 652 653 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 654 size_t mesh_id_len; 655 /* Active Path Selection Protocol Identifier */ 656 u8 mesh_pp_id; 657 /* Active Path Selection Metric Identifier */ 658 u8 mesh_pm_id; 659 /* Congestion Control Mode Identifier */ 660 u8 mesh_cc_id; 661 /* Synchronization Protocol Identifier */ 662 u8 mesh_sp_id; 663 /* Authentication Protocol Identifier */ 664 u8 mesh_auth_id; 665 /* Local mesh Sequence Number */ 666 u32 sn; 667 /* Last used PREQ ID */ 668 u32 preq_id; 669 atomic_t mpaths; 670 /* Timestamp of last SN update */ 671 unsigned long last_sn_update; 672 /* Time when it's ok to send next PERR */ 673 unsigned long next_perr; 674 /* Timestamp of last PREQ sent */ 675 unsigned long last_preq; 676 struct mesh_rmc *rmc; 677 spinlock_t mesh_preq_queue_lock; 678 struct mesh_preq_queue preq_queue; 679 int preq_queue_len; 680 struct mesh_stats mshstats; 681 struct mesh_config mshcfg; 682 atomic_t estab_plinks; 683 u32 mesh_seqnum; 684 bool accepting_plinks; 685 int num_gates; 686 struct beacon_data __rcu *beacon; 687 const u8 *ie; 688 u8 ie_len; 689 enum { 690 IEEE80211_MESH_SEC_NONE = 0x0, 691 IEEE80211_MESH_SEC_AUTHED = 0x1, 692 IEEE80211_MESH_SEC_SECURED = 0x2, 693 } security; 694 bool user_mpm; 695 /* Extensible Synchronization Framework */ 696 const struct ieee80211_mesh_sync_ops *sync_ops; 697 s64 sync_offset_clockdrift_max; 698 spinlock_t sync_offset_lock; 699 /* mesh power save */ 700 enum nl80211_mesh_power_mode nonpeer_pm; 701 int ps_peers_light_sleep; 702 int ps_peers_deep_sleep; 703 struct ps_data ps; 704 /* Channel Switching Support */ 705 struct mesh_csa_settings __rcu *csa; 706 enum { 707 IEEE80211_MESH_CSA_ROLE_NONE, 708 IEEE80211_MESH_CSA_ROLE_INIT, 709 IEEE80211_MESH_CSA_ROLE_REPEATER, 710 } csa_role; 711 u8 chsw_ttl; 712 u16 pre_value; 713 714 /* offset from skb->data while building IE */ 715 int meshconf_offset; 716 717 struct mesh_table *mesh_paths; 718 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 719 int mesh_paths_generation; 720 int mpp_paths_generation; 721 }; 722 723 #ifdef CONFIG_MAC80211_MESH 724 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 725 do { (msh)->mshstats.name++; } while (0) 726 #else 727 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 728 do { } while (0) 729 #endif 730 731 /** 732 * enum ieee80211_sub_if_data_flags - virtual interface flags 733 * 734 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 735 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 736 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 737 * associated stations and deliver multicast frames both 738 * back to wireless media and to the local net stack. 739 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 740 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 741 */ 742 enum ieee80211_sub_if_data_flags { 743 IEEE80211_SDATA_ALLMULTI = BIT(0), 744 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 745 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 746 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 747 IEEE80211_SDATA_IN_DRIVER = BIT(5), 748 }; 749 750 /** 751 * enum ieee80211_sdata_state_bits - virtual interface state bits 752 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 753 * mirrors netif_running() but is separate for interface type 754 * change handling while the interface is up 755 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 756 * mode, so queues are stopped 757 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 758 * to offchannel, reset when offchannel returns 759 */ 760 enum ieee80211_sdata_state_bits { 761 SDATA_STATE_RUNNING, 762 SDATA_STATE_OFFCHANNEL, 763 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 764 }; 765 766 /** 767 * enum ieee80211_chanctx_mode - channel context configuration mode 768 * 769 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 770 * multiple interfaces 771 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 772 * only by a single interface. This can be used for example for 773 * non-fixed channel IBSS. 774 */ 775 enum ieee80211_chanctx_mode { 776 IEEE80211_CHANCTX_SHARED, 777 IEEE80211_CHANCTX_EXCLUSIVE 778 }; 779 780 /** 781 * enum ieee80211_chanctx_replace_state - channel context replacement state 782 * 783 * This is used for channel context in-place reservations that require channel 784 * context switch/swap. 785 * 786 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 787 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 788 * by a (not yet registered) channel context pointed by %replace_ctx. 789 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 790 * replaces an existing channel context pointed to by %replace_ctx. 791 */ 792 enum ieee80211_chanctx_replace_state { 793 IEEE80211_CHANCTX_REPLACE_NONE, 794 IEEE80211_CHANCTX_WILL_BE_REPLACED, 795 IEEE80211_CHANCTX_REPLACES_OTHER, 796 }; 797 798 struct ieee80211_chanctx { 799 struct list_head list; 800 struct rcu_head rcu_head; 801 802 struct list_head assigned_vifs; 803 struct list_head reserved_vifs; 804 805 enum ieee80211_chanctx_replace_state replace_state; 806 struct ieee80211_chanctx *replace_ctx; 807 808 enum ieee80211_chanctx_mode mode; 809 bool driver_present; 810 811 struct ieee80211_chanctx_conf conf; 812 }; 813 814 struct mac80211_qos_map { 815 struct cfg80211_qos_map qos_map; 816 struct rcu_head rcu_head; 817 }; 818 819 enum txq_info_flags { 820 IEEE80211_TXQ_STOP, 821 IEEE80211_TXQ_AMPDU, 822 IEEE80211_TXQ_NO_AMSDU, 823 IEEE80211_TXQ_STOP_NETIF_TX, 824 }; 825 826 /** 827 * struct txq_info - per tid queue 828 * 829 * @tin: contains packets split into multiple flows 830 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 831 * a fq_flow which is already owned by a different tin 832 * @def_cvars: codel vars for @def_flow 833 * @frags: used to keep fragments created after dequeue 834 * @schedule_order: used with ieee80211_local->active_txqs 835 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 836 */ 837 struct txq_info { 838 struct fq_tin tin; 839 struct fq_flow def_flow; 840 struct codel_vars def_cvars; 841 struct codel_stats cstats; 842 struct sk_buff_head frags; 843 struct list_head schedule_order; 844 u16 schedule_round; 845 unsigned long flags; 846 847 /* keep last! */ 848 struct ieee80211_txq txq; 849 }; 850 851 struct ieee80211_if_mntr { 852 u32 flags; 853 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 854 855 struct list_head list; 856 }; 857 858 /** 859 * struct ieee80211_if_nan - NAN state 860 * 861 * @conf: current NAN configuration 862 * @func_ids: a bitmap of available instance_id's 863 */ 864 struct ieee80211_if_nan { 865 struct cfg80211_nan_conf conf; 866 867 /* protects function_inst_ids */ 868 spinlock_t func_lock; 869 struct idr function_inst_ids; 870 }; 871 872 struct ieee80211_sub_if_data { 873 struct list_head list; 874 875 struct wireless_dev wdev; 876 877 /* keys */ 878 struct list_head key_list; 879 880 /* count for keys needing tailroom space allocation */ 881 int crypto_tx_tailroom_needed_cnt; 882 int crypto_tx_tailroom_pending_dec; 883 struct delayed_work dec_tailroom_needed_wk; 884 885 struct net_device *dev; 886 struct ieee80211_local *local; 887 888 unsigned int flags; 889 890 unsigned long state; 891 892 char name[IFNAMSIZ]; 893 894 /* Fragment table for host-based reassembly */ 895 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 896 unsigned int fragment_next; 897 898 /* TID bitmap for NoAck policy */ 899 u16 noack_map; 900 901 /* bit field of ACM bits (BIT(802.1D tag)) */ 902 u8 wmm_acm; 903 904 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 905 struct ieee80211_key __rcu *default_unicast_key; 906 struct ieee80211_key __rcu *default_multicast_key; 907 struct ieee80211_key __rcu *default_mgmt_key; 908 909 u16 sequence_number; 910 __be16 control_port_protocol; 911 bool control_port_no_encrypt; 912 bool control_port_over_nl80211; 913 int encrypt_headroom; 914 915 atomic_t num_tx_queued; 916 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 917 struct mac80211_qos_map __rcu *qos_map; 918 919 struct work_struct csa_finalize_work; 920 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 921 struct cfg80211_chan_def csa_chandef; 922 923 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 924 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 925 926 /* context reservation -- protected with chanctx_mtx */ 927 struct ieee80211_chanctx *reserved_chanctx; 928 struct cfg80211_chan_def reserved_chandef; 929 bool reserved_radar_required; 930 bool reserved_ready; 931 932 /* used to reconfigure hardware SM PS */ 933 struct work_struct recalc_smps; 934 935 struct work_struct work; 936 struct sk_buff_head skb_queue; 937 938 u8 needed_rx_chains; 939 enum ieee80211_smps_mode smps_mode; 940 941 int user_power_level; /* in dBm */ 942 int ap_power_level; /* in dBm */ 943 944 bool radar_required; 945 struct delayed_work dfs_cac_timer_work; 946 947 /* 948 * AP this belongs to: self in AP mode and 949 * corresponding AP in VLAN mode, NULL for 950 * all others (might be needed later in IBSS) 951 */ 952 struct ieee80211_if_ap *bss; 953 954 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 955 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 956 957 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 958 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 959 960 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 961 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 962 963 union { 964 struct ieee80211_if_ap ap; 965 struct ieee80211_if_wds wds; 966 struct ieee80211_if_vlan vlan; 967 struct ieee80211_if_managed mgd; 968 struct ieee80211_if_ibss ibss; 969 struct ieee80211_if_mesh mesh; 970 struct ieee80211_if_ocb ocb; 971 struct ieee80211_if_mntr mntr; 972 struct ieee80211_if_nan nan; 973 } u; 974 975 #ifdef CONFIG_MAC80211_DEBUGFS 976 struct { 977 struct dentry *subdir_stations; 978 struct dentry *default_unicast_key; 979 struct dentry *default_multicast_key; 980 struct dentry *default_mgmt_key; 981 } debugfs; 982 #endif 983 984 /* must be last, dynamically sized area in this! */ 985 struct ieee80211_vif vif; 986 }; 987 988 static inline 989 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 990 { 991 return container_of(p, struct ieee80211_sub_if_data, vif); 992 } 993 994 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 995 __acquires(&sdata->wdev.mtx) 996 { 997 mutex_lock(&sdata->wdev.mtx); 998 __acquire(&sdata->wdev.mtx); 999 } 1000 1001 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1002 __releases(&sdata->wdev.mtx) 1003 { 1004 mutex_unlock(&sdata->wdev.mtx); 1005 __release(&sdata->wdev.mtx); 1006 } 1007 1008 #define sdata_dereference(p, sdata) \ 1009 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1010 1011 static inline void 1012 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1013 { 1014 lockdep_assert_held(&sdata->wdev.mtx); 1015 } 1016 1017 static inline int 1018 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1019 { 1020 switch (chandef->width) { 1021 case NL80211_CHAN_WIDTH_5: 1022 return 2; 1023 case NL80211_CHAN_WIDTH_10: 1024 return 1; 1025 default: 1026 return 0; 1027 } 1028 } 1029 1030 static inline int 1031 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1032 { 1033 struct ieee80211_chanctx_conf *chanctx_conf; 1034 int shift = 0; 1035 1036 rcu_read_lock(); 1037 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1038 if (chanctx_conf) 1039 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1040 rcu_read_unlock(); 1041 1042 return shift; 1043 } 1044 1045 enum { 1046 IEEE80211_RX_MSG = 1, 1047 IEEE80211_TX_STATUS_MSG = 2, 1048 }; 1049 1050 enum queue_stop_reason { 1051 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1052 IEEE80211_QUEUE_STOP_REASON_PS, 1053 IEEE80211_QUEUE_STOP_REASON_CSA, 1054 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1055 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1056 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1057 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1058 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1059 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1060 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1061 1062 IEEE80211_QUEUE_STOP_REASONS, 1063 }; 1064 1065 #ifdef CONFIG_MAC80211_LEDS 1066 struct tpt_led_trigger { 1067 char name[32]; 1068 const struct ieee80211_tpt_blink *blink_table; 1069 unsigned int blink_table_len; 1070 struct timer_list timer; 1071 struct ieee80211_local *local; 1072 unsigned long prev_traffic; 1073 unsigned long tx_bytes, rx_bytes; 1074 unsigned int active, want; 1075 bool running; 1076 }; 1077 #endif 1078 1079 /** 1080 * mac80211 scan flags - currently active scan mode 1081 * 1082 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1083 * well be on the operating channel 1084 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1085 * determine if we are on the operating channel or not 1086 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1087 * channel. This should not interrupt normal traffic. 1088 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1089 * that the scan completed. 1090 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1091 * a scan complete for an aborted scan. 1092 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1093 * cancelled. 1094 */ 1095 enum { 1096 SCAN_SW_SCANNING, 1097 SCAN_HW_SCANNING, 1098 SCAN_ONCHANNEL_SCANNING, 1099 SCAN_COMPLETED, 1100 SCAN_ABORTED, 1101 SCAN_HW_CANCELLED, 1102 }; 1103 1104 /** 1105 * enum mac80211_scan_state - scan state machine states 1106 * 1107 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1108 * determines if we should keep on scanning or switch back to the 1109 * operating channel 1110 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1111 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1112 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1113 * send out data 1114 * @SCAN_RESUME: Resume the scan and scan the next channel 1115 * @SCAN_ABORT: Abort the scan and go back to operating channel 1116 */ 1117 enum mac80211_scan_state { 1118 SCAN_DECISION, 1119 SCAN_SET_CHANNEL, 1120 SCAN_SEND_PROBE, 1121 SCAN_SUSPEND, 1122 SCAN_RESUME, 1123 SCAN_ABORT, 1124 }; 1125 1126 struct ieee80211_local { 1127 /* embed the driver visible part. 1128 * don't cast (use the static inlines below), but we keep 1129 * it first anyway so they become a no-op */ 1130 struct ieee80211_hw hw; 1131 1132 struct fq fq; 1133 struct codel_vars *cvars; 1134 struct codel_params cparams; 1135 1136 /* protects active_txqs and txqi->schedule_order */ 1137 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1138 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1139 u16 schedule_round[IEEE80211_NUM_ACS]; 1140 1141 u16 airtime_flags; 1142 1143 const struct ieee80211_ops *ops; 1144 1145 /* 1146 * private workqueue to mac80211. mac80211 makes this accessible 1147 * via ieee80211_queue_work() 1148 */ 1149 struct workqueue_struct *workqueue; 1150 1151 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1152 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1153 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1154 spinlock_t queue_stop_reason_lock; 1155 1156 int open_count; 1157 int monitors, cooked_mntrs; 1158 /* number of interfaces with corresponding FIF_ flags */ 1159 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1160 fif_probe_req; 1161 int probe_req_reg; 1162 unsigned int filter_flags; /* FIF_* */ 1163 1164 bool wiphy_ciphers_allocated; 1165 1166 bool use_chanctx; 1167 1168 /* protects the aggregated multicast list and filter calls */ 1169 spinlock_t filter_lock; 1170 1171 /* used for uploading changed mc list */ 1172 struct work_struct reconfig_filter; 1173 1174 /* aggregated multicast list */ 1175 struct netdev_hw_addr_list mc_list; 1176 1177 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1178 1179 /* 1180 * suspended is true if we finished all the suspend _and_ we have 1181 * not yet come up from resume. This is to be used by mac80211 1182 * to ensure driver sanity during suspend and mac80211's own 1183 * sanity. It can eventually be used for WoW as well. 1184 */ 1185 bool suspended; 1186 1187 /* 1188 * Resuming is true while suspended, but when we're reprogramming the 1189 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1190 * again even though some other parts of the stack are still suspended 1191 * and we still drop received frames to avoid waking the stack. 1192 */ 1193 bool resuming; 1194 1195 /* 1196 * quiescing is true during the suspend process _only_ to 1197 * ease timer cancelling etc. 1198 */ 1199 bool quiescing; 1200 1201 /* device is started */ 1202 bool started; 1203 1204 /* device is during a HW reconfig */ 1205 bool in_reconfig; 1206 1207 /* wowlan is enabled -- don't reconfig on resume */ 1208 bool wowlan; 1209 1210 struct work_struct radar_detected_work; 1211 1212 /* number of RX chains the hardware has */ 1213 u8 rx_chains; 1214 1215 /* bitmap of which sbands were copied */ 1216 u8 sband_allocated; 1217 1218 int tx_headroom; /* required headroom for hardware/radiotap */ 1219 1220 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1221 * added to skb_queue will be processed, but frames in 1222 * skb_queue_unreliable may be dropped if the total length of these 1223 * queues increases over the limit. */ 1224 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1225 struct tasklet_struct tasklet; 1226 struct sk_buff_head skb_queue; 1227 struct sk_buff_head skb_queue_unreliable; 1228 1229 spinlock_t rx_path_lock; 1230 1231 /* Station data */ 1232 /* 1233 * The mutex only protects the list, hash table and 1234 * counter, reads are done with RCU. 1235 */ 1236 struct mutex sta_mtx; 1237 spinlock_t tim_lock; 1238 unsigned long num_sta; 1239 struct list_head sta_list; 1240 struct rhltable sta_hash; 1241 struct timer_list sta_cleanup; 1242 int sta_generation; 1243 1244 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1245 struct tasklet_struct tx_pending_tasklet; 1246 struct tasklet_struct wake_txqs_tasklet; 1247 1248 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1249 1250 /* number of interfaces with allmulti RX */ 1251 atomic_t iff_allmultis; 1252 1253 struct rate_control_ref *rate_ctrl; 1254 1255 struct crypto_cipher *wep_tx_tfm; 1256 struct crypto_cipher *wep_rx_tfm; 1257 u32 wep_iv; 1258 1259 /* see iface.c */ 1260 struct list_head interfaces; 1261 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1262 struct mutex iflist_mtx; 1263 1264 /* 1265 * Key mutex, protects sdata's key_list and sta_info's 1266 * key pointers (write access, they're RCU.) 1267 */ 1268 struct mutex key_mtx; 1269 1270 /* mutex for scan and work locking */ 1271 struct mutex mtx; 1272 1273 /* Scanning and BSS list */ 1274 unsigned long scanning; 1275 struct cfg80211_ssid scan_ssid; 1276 struct cfg80211_scan_request *int_scan_req; 1277 struct cfg80211_scan_request __rcu *scan_req; 1278 struct ieee80211_scan_request *hw_scan_req; 1279 struct cfg80211_chan_def scan_chandef; 1280 enum nl80211_band hw_scan_band; 1281 int scan_channel_idx; 1282 int scan_ies_len; 1283 int hw_scan_ies_bufsize; 1284 struct cfg80211_scan_info scan_info; 1285 1286 struct work_struct sched_scan_stopped_work; 1287 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1288 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1289 u8 scan_addr[ETH_ALEN]; 1290 1291 unsigned long leave_oper_channel_time; 1292 enum mac80211_scan_state next_scan_state; 1293 struct delayed_work scan_work; 1294 struct ieee80211_sub_if_data __rcu *scan_sdata; 1295 /* For backward compatibility only -- do not use */ 1296 struct cfg80211_chan_def _oper_chandef; 1297 1298 /* Temporary remain-on-channel for off-channel operations */ 1299 struct ieee80211_channel *tmp_channel; 1300 1301 /* channel contexts */ 1302 struct list_head chanctx_list; 1303 struct mutex chanctx_mtx; 1304 1305 #ifdef CONFIG_MAC80211_LEDS 1306 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1307 struct led_trigger tpt_led; 1308 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1309 atomic_t radio_led_active, tpt_led_active; 1310 struct tpt_led_trigger *tpt_led_trigger; 1311 #endif 1312 1313 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1314 /* SNMP counters */ 1315 /* dot11CountersTable */ 1316 u32 dot11TransmittedFragmentCount; 1317 u32 dot11MulticastTransmittedFrameCount; 1318 u32 dot11FailedCount; 1319 u32 dot11RetryCount; 1320 u32 dot11MultipleRetryCount; 1321 u32 dot11FrameDuplicateCount; 1322 u32 dot11ReceivedFragmentCount; 1323 u32 dot11MulticastReceivedFrameCount; 1324 u32 dot11TransmittedFrameCount; 1325 1326 /* TX/RX handler statistics */ 1327 unsigned int tx_handlers_drop; 1328 unsigned int tx_handlers_queued; 1329 unsigned int tx_handlers_drop_wep; 1330 unsigned int tx_handlers_drop_not_assoc; 1331 unsigned int tx_handlers_drop_unauth_port; 1332 unsigned int rx_handlers_drop; 1333 unsigned int rx_handlers_queued; 1334 unsigned int rx_handlers_drop_nullfunc; 1335 unsigned int rx_handlers_drop_defrag; 1336 unsigned int tx_expand_skb_head; 1337 unsigned int tx_expand_skb_head_cloned; 1338 unsigned int rx_expand_skb_head_defrag; 1339 unsigned int rx_handlers_fragments; 1340 unsigned int tx_status_drop; 1341 #define I802_DEBUG_INC(c) (c)++ 1342 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1343 #define I802_DEBUG_INC(c) do { } while (0) 1344 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1345 1346 1347 int total_ps_buffered; /* total number of all buffered unicast and 1348 * multicast packets for power saving stations 1349 */ 1350 1351 bool pspolling; 1352 bool offchannel_ps_enabled; 1353 /* 1354 * PS can only be enabled when we have exactly one managed 1355 * interface (and monitors) in PS, this then points there. 1356 */ 1357 struct ieee80211_sub_if_data *ps_sdata; 1358 struct work_struct dynamic_ps_enable_work; 1359 struct work_struct dynamic_ps_disable_work; 1360 struct timer_list dynamic_ps_timer; 1361 struct notifier_block ifa_notifier; 1362 struct notifier_block ifa6_notifier; 1363 1364 /* 1365 * The dynamic ps timeout configured from user space via WEXT - 1366 * this will override whatever chosen by mac80211 internally. 1367 */ 1368 int dynamic_ps_forced_timeout; 1369 1370 int user_power_level; /* in dBm, for all interfaces */ 1371 1372 enum ieee80211_smps_mode smps_mode; 1373 1374 struct work_struct restart_work; 1375 1376 #ifdef CONFIG_MAC80211_DEBUGFS 1377 struct local_debugfsdentries { 1378 struct dentry *rcdir; 1379 struct dentry *keys; 1380 } debugfs; 1381 #endif 1382 1383 /* 1384 * Remain-on-channel support 1385 */ 1386 struct delayed_work roc_work; 1387 struct list_head roc_list; 1388 struct work_struct hw_roc_start, hw_roc_done; 1389 unsigned long hw_roc_start_time; 1390 u64 roc_cookie_counter; 1391 1392 struct idr ack_status_frames; 1393 spinlock_t ack_status_lock; 1394 1395 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1396 1397 /* virtual monitor interface */ 1398 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1399 struct cfg80211_chan_def monitor_chandef; 1400 1401 /* extended capabilities provided by mac80211 */ 1402 u8 ext_capa[8]; 1403 1404 /* TDLS channel switch */ 1405 struct work_struct tdls_chsw_work; 1406 struct sk_buff_head skb_queue_tdls_chsw; 1407 }; 1408 1409 static inline struct ieee80211_sub_if_data * 1410 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1411 { 1412 return netdev_priv(dev); 1413 } 1414 1415 static inline struct ieee80211_sub_if_data * 1416 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1417 { 1418 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1419 } 1420 1421 static inline struct ieee80211_supported_band * 1422 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1423 { 1424 struct ieee80211_local *local = sdata->local; 1425 struct ieee80211_chanctx_conf *chanctx_conf; 1426 enum nl80211_band band; 1427 1428 rcu_read_lock(); 1429 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1430 1431 if (WARN_ON(!chanctx_conf)) { 1432 rcu_read_unlock(); 1433 return NULL; 1434 } 1435 1436 band = chanctx_conf->def.chan->band; 1437 rcu_read_unlock(); 1438 1439 return local->hw.wiphy->bands[band]; 1440 } 1441 1442 /* this struct holds the value parsing from channel switch IE */ 1443 struct ieee80211_csa_ie { 1444 struct cfg80211_chan_def chandef; 1445 u8 mode; 1446 u8 count; 1447 u8 ttl; 1448 u16 pre_value; 1449 u16 reason_code; 1450 }; 1451 1452 /* Parsed Information Elements */ 1453 struct ieee802_11_elems { 1454 const u8 *ie_start; 1455 size_t total_len; 1456 1457 /* pointers to IEs */ 1458 const struct ieee80211_tdls_lnkie *lnk_id; 1459 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1460 const u8 *ext_capab; 1461 const u8 *ssid; 1462 const u8 *supp_rates; 1463 const u8 *ds_params; 1464 const struct ieee80211_tim_ie *tim; 1465 const u8 *challenge; 1466 const u8 *rsn; 1467 const u8 *erp_info; 1468 const u8 *ext_supp_rates; 1469 const u8 *wmm_info; 1470 const u8 *wmm_param; 1471 const struct ieee80211_ht_cap *ht_cap_elem; 1472 const struct ieee80211_ht_operation *ht_operation; 1473 const struct ieee80211_vht_cap *vht_cap_elem; 1474 const struct ieee80211_vht_operation *vht_operation; 1475 const struct ieee80211_meshconf_ie *mesh_config; 1476 const u8 *he_cap; 1477 const struct ieee80211_he_operation *he_operation; 1478 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1479 const u8 *uora_element; 1480 const u8 *mesh_id; 1481 const u8 *peering; 1482 const __le16 *awake_window; 1483 const u8 *preq; 1484 const u8 *prep; 1485 const u8 *perr; 1486 const struct ieee80211_rann_ie *rann; 1487 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1488 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1489 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1490 const u8 *country_elem; 1491 const u8 *pwr_constr_elem; 1492 const u8 *cisco_dtpc_elem; 1493 const struct ieee80211_timeout_interval_ie *timeout_int; 1494 const u8 *opmode_notif; 1495 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1496 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1497 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1498 1499 /* length of them, respectively */ 1500 u8 ext_capab_len; 1501 u8 ssid_len; 1502 u8 supp_rates_len; 1503 u8 tim_len; 1504 u8 challenge_len; 1505 u8 rsn_len; 1506 u8 ext_supp_rates_len; 1507 u8 wmm_info_len; 1508 u8 wmm_param_len; 1509 u8 he_cap_len; 1510 u8 mesh_id_len; 1511 u8 peering_len; 1512 u8 preq_len; 1513 u8 prep_len; 1514 u8 perr_len; 1515 u8 country_elem_len; 1516 1517 /* whether a parse error occurred while retrieving these elements */ 1518 bool parse_error; 1519 }; 1520 1521 static inline struct ieee80211_local *hw_to_local( 1522 struct ieee80211_hw *hw) 1523 { 1524 return container_of(hw, struct ieee80211_local, hw); 1525 } 1526 1527 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1528 { 1529 return container_of(txq, struct txq_info, txq); 1530 } 1531 1532 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1533 { 1534 struct txq_info *txqi = to_txq_info(txq); 1535 1536 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1537 } 1538 1539 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1540 { 1541 return ether_addr_equal(raddr, addr) || 1542 is_broadcast_ether_addr(raddr); 1543 } 1544 1545 static inline bool 1546 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1547 { 1548 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1549 status->flag & RX_FLAG_MACTIME_END); 1550 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1551 return true; 1552 /* can't handle non-legacy preamble yet */ 1553 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1554 status->encoding == RX_ENC_LEGACY) 1555 return true; 1556 return false; 1557 } 1558 1559 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1560 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1561 1562 /* This function returns the number of multicast stations connected to this 1563 * interface. It returns -1 if that number is not tracked, that is for netdevs 1564 * not in AP or AP_VLAN mode or when using 4addr. 1565 */ 1566 static inline int 1567 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1568 { 1569 if (sdata->vif.type == NL80211_IFTYPE_AP) 1570 return atomic_read(&sdata->u.ap.num_mcast_sta); 1571 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1572 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1573 return -1; 1574 } 1575 1576 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1577 struct ieee80211_rx_status *status, 1578 unsigned int mpdu_len, 1579 unsigned int mpdu_offset); 1580 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1581 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1582 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1583 u32 changed); 1584 void ieee80211_configure_filter(struct ieee80211_local *local); 1585 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1586 1587 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1588 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1589 u64 *cookie, gfp_t gfp); 1590 1591 void ieee80211_check_fast_rx(struct sta_info *sta); 1592 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1593 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1594 void ieee80211_clear_fast_rx(struct sta_info *sta); 1595 1596 /* STA code */ 1597 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1598 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1599 struct cfg80211_auth_request *req); 1600 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1601 struct cfg80211_assoc_request *req); 1602 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1603 struct cfg80211_deauth_request *req); 1604 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1605 struct cfg80211_disassoc_request *req); 1606 void ieee80211_send_pspoll(struct ieee80211_local *local, 1607 struct ieee80211_sub_if_data *sdata); 1608 void ieee80211_recalc_ps(struct ieee80211_local *local); 1609 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1610 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1611 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1612 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1613 struct sk_buff *skb); 1614 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1615 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1616 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1617 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1618 __le16 fc, bool acked); 1619 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1620 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1621 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1622 1623 /* IBSS code */ 1624 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1625 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1626 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1627 const u8 *bssid, const u8 *addr, u32 supp_rates); 1628 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1629 struct cfg80211_ibss_params *params); 1630 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1631 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1632 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1633 struct sk_buff *skb); 1634 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1635 struct cfg80211_csa_settings *csa_settings); 1636 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1637 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1638 1639 /* OCB code */ 1640 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1641 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1642 const u8 *bssid, const u8 *addr, u32 supp_rates); 1643 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1644 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1645 struct ocb_setup *setup); 1646 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1647 1648 /* mesh code */ 1649 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1650 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1651 struct sk_buff *skb); 1652 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1653 struct cfg80211_csa_settings *csa_settings); 1654 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1655 1656 /* scan/BSS handling */ 1657 void ieee80211_scan_work(struct work_struct *work); 1658 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1659 const u8 *ssid, u8 ssid_len, 1660 struct ieee80211_channel **channels, 1661 unsigned int n_channels, 1662 enum nl80211_bss_scan_width scan_width); 1663 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1664 struct cfg80211_scan_request *req); 1665 void ieee80211_scan_cancel(struct ieee80211_local *local); 1666 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1667 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1668 1669 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1670 struct ieee80211_bss * 1671 ieee80211_bss_info_update(struct ieee80211_local *local, 1672 struct ieee80211_rx_status *rx_status, 1673 struct ieee80211_mgmt *mgmt, 1674 size_t len, 1675 struct ieee802_11_elems *elems, 1676 struct ieee80211_channel *channel); 1677 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1678 struct ieee80211_bss *bss); 1679 1680 /* scheduled scan handling */ 1681 int 1682 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1683 struct cfg80211_sched_scan_request *req); 1684 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1685 struct cfg80211_sched_scan_request *req); 1686 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1687 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1688 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1689 1690 /* off-channel/mgmt-tx */ 1691 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1692 void ieee80211_offchannel_return(struct ieee80211_local *local); 1693 void ieee80211_roc_setup(struct ieee80211_local *local); 1694 void ieee80211_start_next_roc(struct ieee80211_local *local); 1695 void ieee80211_roc_purge(struct ieee80211_local *local, 1696 struct ieee80211_sub_if_data *sdata); 1697 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1698 struct ieee80211_channel *chan, 1699 unsigned int duration, u64 *cookie); 1700 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1701 struct wireless_dev *wdev, u64 cookie); 1702 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1703 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1704 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1705 struct wireless_dev *wdev, u64 cookie); 1706 1707 /* channel switch handling */ 1708 void ieee80211_csa_finalize_work(struct work_struct *work); 1709 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1710 struct cfg80211_csa_settings *params); 1711 1712 /* interface handling */ 1713 int ieee80211_iface_init(void); 1714 void ieee80211_iface_exit(void); 1715 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1716 unsigned char name_assign_type, 1717 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1718 struct vif_params *params); 1719 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1720 enum nl80211_iftype type); 1721 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1722 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1723 u32 ieee80211_idle_off(struct ieee80211_local *local); 1724 void ieee80211_recalc_idle(struct ieee80211_local *local); 1725 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1726 const int offset); 1727 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1728 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1729 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1730 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1731 1732 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1733 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1734 bool update_bss); 1735 1736 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1737 { 1738 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1739 } 1740 1741 /* tx handling */ 1742 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1743 void ieee80211_tx_pending(unsigned long data); 1744 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1745 struct net_device *dev); 1746 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1747 struct net_device *dev); 1748 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1749 struct net_device *dev, 1750 u32 info_flags); 1751 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1752 struct sk_buff_head *skbs); 1753 struct sk_buff * 1754 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1755 struct sk_buff *skb, u32 info_flags); 1756 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1757 struct ieee80211_supported_band *sband, 1758 int retry_count, int shift, bool send_to_cooked); 1759 1760 void ieee80211_check_fast_xmit(struct sta_info *sta); 1761 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1762 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1763 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1764 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1765 const u8 *buf, size_t len, 1766 const u8 *dest, __be16 proto, bool unencrypted); 1767 1768 /* HT */ 1769 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1770 struct ieee80211_sta_ht_cap *ht_cap); 1771 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1772 struct ieee80211_supported_band *sband, 1773 const struct ieee80211_ht_cap *ht_cap_ie, 1774 struct sta_info *sta); 1775 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1776 const u8 *da, u16 tid, 1777 u16 initiator, u16 reason_code); 1778 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1779 enum ieee80211_smps_mode smps, const u8 *da, 1780 const u8 *bssid); 1781 void ieee80211_request_smps_ap_work(struct work_struct *work); 1782 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1783 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1784 enum ieee80211_smps_mode smps_mode_new); 1785 1786 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1787 u16 initiator, u16 reason, bool stop); 1788 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1789 u16 initiator, u16 reason, bool stop); 1790 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1791 u8 dialog_token, u16 timeout, 1792 u16 start_seq_num, u16 ba_policy, u16 tid, 1793 u16 buf_size, bool tx, bool auto_seq); 1794 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1795 enum ieee80211_agg_stop_reason reason); 1796 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1797 struct sta_info *sta, 1798 struct ieee80211_mgmt *mgmt, size_t len); 1799 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1800 struct sta_info *sta, 1801 struct ieee80211_mgmt *mgmt, 1802 size_t len); 1803 void ieee80211_process_addba_request(struct ieee80211_local *local, 1804 struct sta_info *sta, 1805 struct ieee80211_mgmt *mgmt, 1806 size_t len); 1807 1808 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1809 enum ieee80211_agg_stop_reason reason); 1810 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1811 enum ieee80211_agg_stop_reason reason); 1812 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1813 struct tid_ampdu_tx *tid_tx); 1814 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1815 struct tid_ampdu_tx *tid_tx); 1816 void ieee80211_ba_session_work(struct work_struct *work); 1817 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1818 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1819 1820 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1821 enum nl80211_smps_mode 1822 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1823 1824 /* VHT */ 1825 void 1826 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1827 struct ieee80211_supported_band *sband, 1828 const struct ieee80211_vht_cap *vht_cap_ie, 1829 struct sta_info *sta); 1830 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1831 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1832 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1833 enum ieee80211_sta_rx_bandwidth 1834 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1835 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1836 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1837 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1838 struct ieee80211_mgmt *mgmt); 1839 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1840 struct sta_info *sta, u8 opmode, 1841 enum nl80211_band band); 1842 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1843 struct sta_info *sta, u8 opmode, 1844 enum nl80211_band band); 1845 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1846 struct ieee80211_sta_vht_cap *vht_cap); 1847 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1848 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1849 enum nl80211_chan_width 1850 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1851 1852 /* HE */ 1853 void 1854 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1855 struct ieee80211_supported_band *sband, 1856 const u8 *he_cap_ie, u8 he_cap_len, 1857 struct sta_info *sta); 1858 1859 /* Spectrum management */ 1860 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1861 struct ieee80211_mgmt *mgmt, 1862 size_t len); 1863 /** 1864 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1865 * @sdata: the sdata of the interface which has received the frame 1866 * @elems: parsed 802.11 elements received with the frame 1867 * @current_band: indicates the current band 1868 * @sta_flags: contains information about own capabilities and restrictions 1869 * to decide which channel switch announcements can be accepted. Only the 1870 * following subset of &enum ieee80211_sta_flags are evaluated: 1871 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1872 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1873 * %IEEE80211_STA_DISABLE_160MHZ. 1874 * @bssid: the currently connected bssid (for reporting) 1875 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1876 All of them will be filled with if success only. 1877 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1878 */ 1879 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1880 struct ieee802_11_elems *elems, 1881 enum nl80211_band current_band, 1882 u32 sta_flags, u8 *bssid, 1883 struct ieee80211_csa_ie *csa_ie); 1884 1885 /* Suspend/resume and hw reconfiguration */ 1886 int ieee80211_reconfig(struct ieee80211_local *local); 1887 void ieee80211_stop_device(struct ieee80211_local *local); 1888 1889 int __ieee80211_suspend(struct ieee80211_hw *hw, 1890 struct cfg80211_wowlan *wowlan); 1891 1892 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1893 { 1894 struct ieee80211_local *local = hw_to_local(hw); 1895 1896 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1897 !test_bit(SCAN_COMPLETED, &local->scanning), 1898 "%s: resume with hardware scan still in progress\n", 1899 wiphy_name(hw->wiphy)); 1900 1901 return ieee80211_reconfig(hw_to_local(hw)); 1902 } 1903 1904 /* utility functions/constants */ 1905 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1906 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1907 int rate, int erp, int short_preamble, 1908 int shift); 1909 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1910 struct ieee80211_tx_queue_params *qparam, 1911 int ac); 1912 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1913 bool bss_notify, bool enable_qos); 1914 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1915 struct sta_info *sta, struct sk_buff *skb, 1916 u32 txdata_flags); 1917 1918 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1919 struct sk_buff *skb, int tid, 1920 enum nl80211_band band, u32 txdata_flags); 1921 1922 static inline void 1923 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1924 struct sk_buff *skb, int tid, 1925 enum nl80211_band band, u32 txdata_flags) 1926 { 1927 rcu_read_lock(); 1928 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1929 rcu_read_unlock(); 1930 } 1931 1932 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1933 struct sk_buff *skb, int tid) 1934 { 1935 struct ieee80211_chanctx_conf *chanctx_conf; 1936 1937 rcu_read_lock(); 1938 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1939 if (WARN_ON(!chanctx_conf)) { 1940 rcu_read_unlock(); 1941 kfree_skb(skb); 1942 return; 1943 } 1944 1945 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1946 chanctx_conf->def.chan->band, 0); 1947 rcu_read_unlock(); 1948 } 1949 1950 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1951 struct sk_buff *skb) 1952 { 1953 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1954 ieee80211_tx_skb_tid(sdata, skb, 7); 1955 } 1956 1957 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1958 struct ieee802_11_elems *elems, 1959 u64 filter, u32 crc); 1960 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1961 bool action, 1962 struct ieee802_11_elems *elems) 1963 { 1964 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1965 } 1966 1967 1968 extern const int ieee802_1d_to_ac[8]; 1969 1970 static inline int ieee80211_ac_from_tid(int tid) 1971 { 1972 return ieee802_1d_to_ac[tid & 7]; 1973 } 1974 1975 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1976 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1977 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1978 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1979 struct ieee80211_sub_if_data *sdata, 1980 bool powersave); 1981 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1982 struct ieee80211_hdr *hdr); 1983 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1984 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1985 1986 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1987 unsigned long queues, 1988 enum queue_stop_reason reason, 1989 bool refcounted); 1990 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1991 struct ieee80211_sub_if_data *sdata, 1992 enum queue_stop_reason reason); 1993 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1994 struct ieee80211_sub_if_data *sdata, 1995 enum queue_stop_reason reason); 1996 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1997 unsigned long queues, 1998 enum queue_stop_reason reason, 1999 bool refcounted); 2000 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2001 enum queue_stop_reason reason, 2002 bool refcounted); 2003 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2004 enum queue_stop_reason reason, 2005 bool refcounted); 2006 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2007 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2008 struct sk_buff *skb); 2009 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2010 struct sk_buff_head *skbs); 2011 void ieee80211_flush_queues(struct ieee80211_local *local, 2012 struct ieee80211_sub_if_data *sdata, bool drop); 2013 void __ieee80211_flush_queues(struct ieee80211_local *local, 2014 struct ieee80211_sub_if_data *sdata, 2015 unsigned int queues, bool drop); 2016 2017 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2018 { 2019 /* 2020 * If quiescing is set, we are racing with __ieee80211_suspend. 2021 * __ieee80211_suspend flushes the workers after setting quiescing, 2022 * and we check quiescing / suspended before enqueing new workers. 2023 * We should abort the worker to avoid the races below. 2024 */ 2025 if (local->quiescing) 2026 return false; 2027 2028 /* 2029 * We might already be suspended if the following scenario occurs: 2030 * __ieee80211_suspend Control path 2031 * 2032 * if (local->quiescing) 2033 * return; 2034 * local->quiescing = true; 2035 * flush_workqueue(); 2036 * queue_work(...); 2037 * local->suspended = true; 2038 * local->quiescing = false; 2039 * worker starts running... 2040 */ 2041 if (local->suspended) 2042 return false; 2043 2044 return true; 2045 } 2046 2047 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2048 void ieee80211_txq_set_params(struct ieee80211_local *local); 2049 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2050 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2051 struct sta_info *sta, 2052 struct txq_info *txq, int tid); 2053 void ieee80211_txq_purge(struct ieee80211_local *local, 2054 struct txq_info *txqi); 2055 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2056 struct ieee80211_sub_if_data *sdata); 2057 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2058 struct txq_info *txqi); 2059 void ieee80211_wake_txqs(unsigned long data); 2060 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2061 u16 transaction, u16 auth_alg, u16 status, 2062 const u8 *extra, size_t extra_len, const u8 *bssid, 2063 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2064 u32 tx_flags); 2065 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2066 const u8 *bssid, u16 stype, u16 reason, 2067 bool send_frame, u8 *frame_buf); 2068 2069 enum { 2070 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2071 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2072 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2073 }; 2074 2075 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2076 size_t buffer_len, 2077 struct ieee80211_scan_ies *ie_desc, 2078 const u8 *ie, size_t ie_len, 2079 u8 bands_used, u32 *rate_masks, 2080 struct cfg80211_chan_def *chandef, 2081 u32 flags); 2082 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2083 const u8 *src, const u8 *dst, 2084 u32 ratemask, 2085 struct ieee80211_channel *chan, 2086 const u8 *ssid, size_t ssid_len, 2087 const u8 *ie, size_t ie_len, 2088 u32 flags); 2089 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2090 struct ieee802_11_elems *elems, 2091 enum nl80211_band band, u32 *basic_rates); 2092 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2093 enum ieee80211_smps_mode smps_mode); 2094 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2095 enum ieee80211_smps_mode smps_mode); 2096 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2097 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2098 2099 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2100 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2101 u16 cap); 2102 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2103 const struct cfg80211_chan_def *chandef, 2104 u16 prot_mode, bool rifs_mode); 2105 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2106 const struct cfg80211_chan_def *chandef); 2107 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2108 u32 cap); 2109 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2110 const struct cfg80211_chan_def *chandef); 2111 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2112 const struct ieee80211_sta_he_cap *he_cap, 2113 u8 *end); 2114 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2115 const struct ieee80211_supported_band *sband, 2116 const u8 *srates, int srates_len, u32 *rates); 2117 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2118 struct sk_buff *skb, bool need_basic, 2119 enum nl80211_band band); 2120 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2121 struct sk_buff *skb, bool need_basic, 2122 enum nl80211_band band); 2123 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2124 2125 /* channel management */ 2126 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2127 struct cfg80211_chan_def *chandef); 2128 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2129 const struct ieee80211_vht_operation *oper, 2130 const struct ieee80211_ht_operation *htop, 2131 struct cfg80211_chan_def *chandef); 2132 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2133 2134 int __must_check 2135 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2136 const struct cfg80211_chan_def *chandef, 2137 enum ieee80211_chanctx_mode mode); 2138 int __must_check 2139 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2140 const struct cfg80211_chan_def *chandef, 2141 enum ieee80211_chanctx_mode mode, 2142 bool radar_required); 2143 int __must_check 2144 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2145 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2146 2147 int __must_check 2148 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2149 const struct cfg80211_chan_def *chandef, 2150 u32 *changed); 2151 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2152 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2153 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2154 bool clear); 2155 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2156 struct ieee80211_chanctx *ctx); 2157 2158 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2159 struct ieee80211_chanctx *chanctx); 2160 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2161 struct ieee80211_chanctx *ctx); 2162 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2163 2164 void ieee80211_dfs_cac_timer(unsigned long data); 2165 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2166 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2167 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2168 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2169 struct cfg80211_csa_settings *csa_settings); 2170 2171 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2172 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2173 const struct ieee80211_cipher_scheme * 2174 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2175 enum nl80211_iftype iftype); 2176 int ieee80211_cs_headroom(struct ieee80211_local *local, 2177 struct cfg80211_crypto_settings *crypto, 2178 enum nl80211_iftype iftype); 2179 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2180 struct ieee80211_sub_if_data *sdata); 2181 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2182 const struct cfg80211_chan_def *chandef, 2183 enum ieee80211_chanctx_mode chanmode, 2184 u8 radar_detect); 2185 int ieee80211_max_num_channels(struct ieee80211_local *local); 2186 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2187 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2188 struct ieee80211_chanctx *ctx); 2189 2190 /* TDLS */ 2191 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2192 const u8 *peer, u8 action_code, u8 dialog_token, 2193 u16 status_code, u32 peer_capability, 2194 bool initiator, const u8 *extra_ies, 2195 size_t extra_ies_len); 2196 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2197 const u8 *peer, enum nl80211_tdls_operation oper); 2198 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2199 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2200 const u8 *addr, u8 oper_class, 2201 struct cfg80211_chan_def *chandef); 2202 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2203 struct net_device *dev, 2204 const u8 *addr); 2205 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2206 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2207 2208 extern const struct ethtool_ops ieee80211_ethtool_ops; 2209 2210 #ifdef CONFIG_MAC80211_NOINLINE 2211 #define debug_noinline noinline 2212 #else 2213 #define debug_noinline 2214 #endif 2215 2216 #endif /* IEEE80211_I_H */ 2217