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_UNICAST BIT(1) 169 #define IEEE80211_TX_PS_BUFFERED BIT(2) 170 171 struct ieee80211_tx_data { 172 struct sk_buff *skb; 173 struct sk_buff_head skbs; 174 struct ieee80211_local *local; 175 struct ieee80211_sub_if_data *sdata; 176 struct sta_info *sta; 177 struct ieee80211_key *key; 178 struct ieee80211_tx_rate rate; 179 180 unsigned int flags; 181 }; 182 183 184 typedef unsigned __bitwise ieee80211_rx_result; 185 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 186 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 187 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 188 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 189 190 /** 191 * enum ieee80211_packet_rx_flags - packet RX flags 192 * @IEEE80211_RX_AMSDU: a-MSDU packet 193 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 194 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 195 * 196 * These are per-frame flags that are attached to a frame in the 197 * @rx_flags field of &struct ieee80211_rx_status. 198 */ 199 enum ieee80211_packet_rx_flags { 200 IEEE80211_RX_AMSDU = BIT(3), 201 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 202 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 203 }; 204 205 /** 206 * enum ieee80211_rx_flags - RX data flags 207 * 208 * @IEEE80211_RX_CMNTR: received on cooked monitor already 209 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 210 * to cfg80211_report_obss_beacon(). 211 * 212 * These flags are used across handling multiple interfaces 213 * for a single frame. 214 */ 215 enum ieee80211_rx_flags { 216 IEEE80211_RX_CMNTR = BIT(0), 217 IEEE80211_RX_BEACON_REPORTED = BIT(1), 218 }; 219 220 struct ieee80211_rx_data { 221 struct napi_struct *napi; 222 struct sk_buff *skb; 223 struct ieee80211_local *local; 224 struct ieee80211_sub_if_data *sdata; 225 struct sta_info *sta; 226 struct ieee80211_key *key; 227 228 unsigned int flags; 229 230 /* 231 * Index into sequence numbers array, 0..16 232 * since the last (16) is used for non-QoS, 233 * will be 16 on non-QoS frames. 234 */ 235 int seqno_idx; 236 237 /* 238 * Index into the security IV/PN arrays, 0..16 239 * since the last (16) is used for CCMP-encrypted 240 * management frames, will be set to 16 on mgmt 241 * frames and 0 on non-QoS frames. 242 */ 243 int security_idx; 244 245 u32 tkip_iv32; 246 u16 tkip_iv16; 247 }; 248 249 struct ieee80211_csa_settings { 250 const u16 *counter_offsets_beacon; 251 const u16 *counter_offsets_presp; 252 253 int n_counter_offsets_beacon; 254 int n_counter_offsets_presp; 255 256 u8 count; 257 }; 258 259 struct beacon_data { 260 u8 *head, *tail; 261 int head_len, tail_len; 262 struct ieee80211_meshconf_ie *meshconf; 263 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 264 u8 csa_current_counter; 265 struct rcu_head rcu_head; 266 }; 267 268 struct probe_resp { 269 struct rcu_head rcu_head; 270 int len; 271 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 272 u8 data[0]; 273 }; 274 275 struct ps_data { 276 /* yes, this looks ugly, but guarantees that we can later use 277 * bitmap_empty :) 278 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 279 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 280 __aligned(__alignof__(unsigned long)); 281 struct sk_buff_head bc_buf; 282 atomic_t num_sta_ps; /* number of stations in PS mode */ 283 int dtim_count; 284 bool dtim_bc_mc; 285 }; 286 287 struct ieee80211_if_ap { 288 struct beacon_data __rcu *beacon; 289 struct probe_resp __rcu *probe_resp; 290 291 /* to be used after channel switch. */ 292 struct cfg80211_beacon_data *next_beacon; 293 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 294 295 struct ps_data ps; 296 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 297 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 298 driver_smps_mode; /* smps mode request */ 299 300 struct work_struct request_smps_work; 301 bool multicast_to_unicast; 302 }; 303 304 struct ieee80211_if_wds { 305 struct sta_info *sta; 306 u8 remote_addr[ETH_ALEN]; 307 }; 308 309 struct ieee80211_if_vlan { 310 struct list_head list; /* write-protected with RTNL and local->mtx */ 311 312 /* used for all tx if the VLAN is configured to 4-addr mode */ 313 struct sta_info __rcu *sta; 314 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 315 }; 316 317 struct mesh_stats { 318 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 319 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 320 __u32 fwded_frames; /* Mesh total forwarded frames */ 321 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 322 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 323 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 324 }; 325 326 #define PREQ_Q_F_START 0x1 327 #define PREQ_Q_F_REFRESH 0x2 328 struct mesh_preq_queue { 329 struct list_head list; 330 u8 dst[ETH_ALEN]; 331 u8 flags; 332 }; 333 334 struct ieee80211_roc_work { 335 struct list_head list; 336 337 struct ieee80211_sub_if_data *sdata; 338 339 struct ieee80211_channel *chan; 340 341 bool started, abort, hw_begun, notified; 342 bool on_channel; 343 344 unsigned long start_time; 345 346 u32 duration, req_duration; 347 struct sk_buff *frame; 348 u64 cookie, mgmt_tx_cookie; 349 enum ieee80211_roc_type type; 350 }; 351 352 /* flags used in struct ieee80211_if_managed.flags */ 353 enum ieee80211_sta_flags { 354 IEEE80211_STA_CONNECTION_POLL = BIT(1), 355 IEEE80211_STA_CONTROL_PORT = BIT(2), 356 IEEE80211_STA_DISABLE_HT = BIT(4), 357 IEEE80211_STA_MFP_ENABLED = BIT(6), 358 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 359 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 360 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 361 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 362 IEEE80211_STA_DISABLE_VHT = BIT(11), 363 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 364 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 365 IEEE80211_STA_DISABLE_WMM = BIT(14), 366 IEEE80211_STA_ENABLE_RRM = BIT(15), 367 }; 368 369 struct ieee80211_mgd_auth_data { 370 struct cfg80211_bss *bss; 371 unsigned long timeout; 372 int tries; 373 u16 algorithm, expected_transaction; 374 375 u8 key[WLAN_KEY_LEN_WEP104]; 376 u8 key_len, key_idx; 377 bool done; 378 bool timeout_started; 379 380 u16 sae_trans, sae_status; 381 size_t data_len; 382 u8 data[]; 383 }; 384 385 struct ieee80211_mgd_assoc_data { 386 struct cfg80211_bss *bss; 387 const u8 *supp_rates; 388 389 unsigned long timeout; 390 int tries; 391 392 u16 capability; 393 u8 prev_bssid[ETH_ALEN]; 394 u8 ssid[IEEE80211_MAX_SSID_LEN]; 395 u8 ssid_len; 396 u8 supp_rates_len; 397 bool wmm, uapsd; 398 bool need_beacon; 399 bool synced; 400 bool timeout_started; 401 402 u8 ap_ht_param; 403 404 struct ieee80211_vht_cap ap_vht_cap; 405 406 u8 fils_nonces[2 * FILS_NONCE_LEN]; 407 u8 fils_kek[FILS_MAX_KEK_LEN]; 408 size_t fils_kek_len; 409 410 size_t ie_len; 411 u8 ie[]; 412 }; 413 414 struct ieee80211_sta_tx_tspec { 415 /* timestamp of the first packet in the time slice */ 416 unsigned long time_slice_start; 417 418 u32 admitted_time; /* in usecs, unlike over the air */ 419 u8 tsid; 420 s8 up; /* signed to be able to invalidate with -1 during teardown */ 421 422 /* consumed TX time in microseconds in the time slice */ 423 u32 consumed_tx_time; 424 enum { 425 TX_TSPEC_ACTION_NONE = 0, 426 TX_TSPEC_ACTION_DOWNGRADE, 427 TX_TSPEC_ACTION_STOP_DOWNGRADE, 428 } action; 429 bool downgraded; 430 }; 431 432 DECLARE_EWMA(beacon_signal, 4, 4) 433 434 struct ieee80211_if_managed { 435 struct timer_list timer; 436 struct timer_list conn_mon_timer; 437 struct timer_list bcn_mon_timer; 438 struct timer_list chswitch_timer; 439 struct work_struct monitor_work; 440 struct work_struct chswitch_work; 441 struct work_struct beacon_connection_loss_work; 442 struct work_struct csa_connection_drop_work; 443 444 unsigned long beacon_timeout; 445 unsigned long probe_timeout; 446 int probe_send_count; 447 bool nullfunc_failed; 448 bool connection_loss; 449 450 struct cfg80211_bss *associated; 451 struct ieee80211_mgd_auth_data *auth_data; 452 struct ieee80211_mgd_assoc_data *assoc_data; 453 454 u8 bssid[ETH_ALEN] __aligned(2); 455 456 u16 aid; 457 458 bool powersave; /* powersave requested for this iface */ 459 bool broken_ap; /* AP is broken -- turn off powersave */ 460 bool have_beacon; 461 u8 dtim_period; 462 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 463 driver_smps_mode; /* smps mode request */ 464 465 struct work_struct request_smps_work; 466 467 unsigned int flags; 468 469 bool csa_waiting_bcn; 470 bool csa_ignored_same_chan; 471 472 bool beacon_crc_valid; 473 u32 beacon_crc; 474 475 bool status_acked; 476 bool status_received; 477 __le16 status_fc; 478 479 enum { 480 IEEE80211_MFP_DISABLED, 481 IEEE80211_MFP_OPTIONAL, 482 IEEE80211_MFP_REQUIRED 483 } mfp; /* management frame protection */ 484 485 /* 486 * Bitmask of enabled u-apsd queues, 487 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 488 * to take effect. 489 */ 490 unsigned int uapsd_queues; 491 492 /* 493 * Maximum number of buffered frames AP can deliver during a 494 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 495 * Needs a new association to take effect. 496 */ 497 unsigned int uapsd_max_sp_len; 498 499 int wmm_last_param_set; 500 501 u8 use_4addr; 502 503 s16 p2p_noa_index; 504 505 struct ewma_beacon_signal ave_beacon_signal; 506 507 /* 508 * Number of Beacon frames used in ave_beacon_signal. This can be used 509 * to avoid generating less reliable cqm events that would be based 510 * only on couple of received frames. 511 */ 512 unsigned int count_beacon_signal; 513 514 /* Number of times beacon loss was invoked. */ 515 unsigned int beacon_loss_count; 516 517 /* 518 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 519 * that triggered a cqm event. 0 indicates that no event has been 520 * generated for the current association. 521 */ 522 int last_cqm_event_signal; 523 524 /* 525 * State variables for keeping track of RSSI of the AP currently 526 * connected to and informing driver when RSSI has gone 527 * below/above a certain threshold. 528 */ 529 int rssi_min_thold, rssi_max_thold; 530 int last_ave_beacon_signal; 531 532 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 533 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 534 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 535 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 536 537 /* TDLS support */ 538 u8 tdls_peer[ETH_ALEN] __aligned(2); 539 struct delayed_work tdls_peer_del_work; 540 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 541 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 542 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 543 bool tdls_chan_switch_prohibited; 544 bool tdls_wider_bw_prohibited; 545 546 /* WMM-AC TSPEC support */ 547 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 548 /* Use a separate work struct so that we can do something here 549 * while the sdata->work is flushing the queues, for example. 550 * otherwise, in scenarios where we hardly get any traffic out 551 * on the BE queue, but there's a lot of VO traffic, we might 552 * get stuck in a downgraded situation and flush takes forever. 553 */ 554 struct delayed_work tx_tspec_wk; 555 }; 556 557 struct ieee80211_if_ibss { 558 struct timer_list timer; 559 struct work_struct csa_connection_drop_work; 560 561 unsigned long last_scan_completed; 562 563 u32 basic_rates; 564 565 bool fixed_bssid; 566 bool fixed_channel; 567 bool privacy; 568 569 bool control_port; 570 bool userspace_handles_dfs; 571 572 u8 bssid[ETH_ALEN] __aligned(2); 573 u8 ssid[IEEE80211_MAX_SSID_LEN]; 574 u8 ssid_len, ie_len; 575 u8 *ie; 576 struct cfg80211_chan_def chandef; 577 578 unsigned long ibss_join_req; 579 /* probe response/beacon for IBSS */ 580 struct beacon_data __rcu *presp; 581 582 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 583 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 584 585 spinlock_t incomplete_lock; 586 struct list_head incomplete_stations; 587 588 enum { 589 IEEE80211_IBSS_MLME_SEARCH, 590 IEEE80211_IBSS_MLME_JOINED, 591 } state; 592 }; 593 594 /** 595 * struct ieee80211_if_ocb - OCB mode state 596 * 597 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 598 * @wrkq_flags: OCB deferred task action 599 * @incomplete_lock: delayed STA insertion lock 600 * @incomplete_stations: list of STAs waiting for delayed insertion 601 * @joined: indication if the interface is connected to an OCB network 602 */ 603 struct ieee80211_if_ocb { 604 struct timer_list housekeeping_timer; 605 unsigned long wrkq_flags; 606 607 spinlock_t incomplete_lock; 608 struct list_head incomplete_stations; 609 610 bool joined; 611 }; 612 613 /** 614 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 615 * 616 * these declarations define the interface, which enables 617 * vendor-specific mesh synchronization 618 * 619 */ 620 struct ieee802_11_elems; 621 struct ieee80211_mesh_sync_ops { 622 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 623 u16 stype, 624 struct ieee80211_mgmt *mgmt, 625 struct ieee802_11_elems *elems, 626 struct ieee80211_rx_status *rx_status); 627 628 /* should be called with beacon_data under RCU read lock */ 629 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 630 struct beacon_data *beacon); 631 /* add other framework functions here */ 632 }; 633 634 struct mesh_csa_settings { 635 struct rcu_head rcu_head; 636 struct cfg80211_csa_settings settings; 637 }; 638 639 struct ieee80211_if_mesh { 640 struct timer_list housekeeping_timer; 641 struct timer_list mesh_path_timer; 642 struct timer_list mesh_path_root_timer; 643 644 unsigned long wrkq_flags; 645 unsigned long mbss_changed; 646 647 bool userspace_handles_dfs; 648 649 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 650 size_t mesh_id_len; 651 /* Active Path Selection Protocol Identifier */ 652 u8 mesh_pp_id; 653 /* Active Path Selection Metric Identifier */ 654 u8 mesh_pm_id; 655 /* Congestion Control Mode Identifier */ 656 u8 mesh_cc_id; 657 /* Synchronization Protocol Identifier */ 658 u8 mesh_sp_id; 659 /* Authentication Protocol Identifier */ 660 u8 mesh_auth_id; 661 /* Local mesh Sequence Number */ 662 u32 sn; 663 /* Last used PREQ ID */ 664 u32 preq_id; 665 atomic_t mpaths; 666 /* Timestamp of last SN update */ 667 unsigned long last_sn_update; 668 /* Time when it's ok to send next PERR */ 669 unsigned long next_perr; 670 /* Timestamp of last PREQ sent */ 671 unsigned long last_preq; 672 struct mesh_rmc *rmc; 673 spinlock_t mesh_preq_queue_lock; 674 struct mesh_preq_queue preq_queue; 675 int preq_queue_len; 676 struct mesh_stats mshstats; 677 struct mesh_config mshcfg; 678 atomic_t estab_plinks; 679 u32 mesh_seqnum; 680 bool accepting_plinks; 681 int num_gates; 682 struct beacon_data __rcu *beacon; 683 const u8 *ie; 684 u8 ie_len; 685 enum { 686 IEEE80211_MESH_SEC_NONE = 0x0, 687 IEEE80211_MESH_SEC_AUTHED = 0x1, 688 IEEE80211_MESH_SEC_SECURED = 0x2, 689 } security; 690 bool user_mpm; 691 /* Extensible Synchronization Framework */ 692 const struct ieee80211_mesh_sync_ops *sync_ops; 693 s64 sync_offset_clockdrift_max; 694 spinlock_t sync_offset_lock; 695 /* mesh power save */ 696 enum nl80211_mesh_power_mode nonpeer_pm; 697 int ps_peers_light_sleep; 698 int ps_peers_deep_sleep; 699 struct ps_data ps; 700 /* Channel Switching Support */ 701 struct mesh_csa_settings __rcu *csa; 702 enum { 703 IEEE80211_MESH_CSA_ROLE_NONE, 704 IEEE80211_MESH_CSA_ROLE_INIT, 705 IEEE80211_MESH_CSA_ROLE_REPEATER, 706 } csa_role; 707 u8 chsw_ttl; 708 u16 pre_value; 709 710 /* offset from skb->data while building IE */ 711 int meshconf_offset; 712 713 struct mesh_table *mesh_paths; 714 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 715 int mesh_paths_generation; 716 int mpp_paths_generation; 717 }; 718 719 #ifdef CONFIG_MAC80211_MESH 720 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 721 do { (msh)->mshstats.name++; } while (0) 722 #else 723 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 724 do { } while (0) 725 #endif 726 727 /** 728 * enum ieee80211_sub_if_data_flags - virtual interface flags 729 * 730 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 731 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 732 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 733 * associated stations and deliver multicast frames both 734 * back to wireless media and to the local net stack. 735 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 736 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 737 */ 738 enum ieee80211_sub_if_data_flags { 739 IEEE80211_SDATA_ALLMULTI = BIT(0), 740 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 741 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 742 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 743 IEEE80211_SDATA_IN_DRIVER = BIT(5), 744 }; 745 746 /** 747 * enum ieee80211_sdata_state_bits - virtual interface state bits 748 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 749 * mirrors netif_running() but is separate for interface type 750 * change handling while the interface is up 751 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 752 * mode, so queues are stopped 753 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 754 * to offchannel, reset when offchannel returns 755 */ 756 enum ieee80211_sdata_state_bits { 757 SDATA_STATE_RUNNING, 758 SDATA_STATE_OFFCHANNEL, 759 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 760 }; 761 762 /** 763 * enum ieee80211_chanctx_mode - channel context configuration mode 764 * 765 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 766 * multiple interfaces 767 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 768 * only by a single interface. This can be used for example for 769 * non-fixed channel IBSS. 770 */ 771 enum ieee80211_chanctx_mode { 772 IEEE80211_CHANCTX_SHARED, 773 IEEE80211_CHANCTX_EXCLUSIVE 774 }; 775 776 /** 777 * enum ieee80211_chanctx_replace_state - channel context replacement state 778 * 779 * This is used for channel context in-place reservations that require channel 780 * context switch/swap. 781 * 782 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 783 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 784 * by a (not yet registered) channel context pointed by %replace_ctx. 785 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 786 * replaces an existing channel context pointed to by %replace_ctx. 787 */ 788 enum ieee80211_chanctx_replace_state { 789 IEEE80211_CHANCTX_REPLACE_NONE, 790 IEEE80211_CHANCTX_WILL_BE_REPLACED, 791 IEEE80211_CHANCTX_REPLACES_OTHER, 792 }; 793 794 struct ieee80211_chanctx { 795 struct list_head list; 796 struct rcu_head rcu_head; 797 798 struct list_head assigned_vifs; 799 struct list_head reserved_vifs; 800 801 enum ieee80211_chanctx_replace_state replace_state; 802 struct ieee80211_chanctx *replace_ctx; 803 804 enum ieee80211_chanctx_mode mode; 805 bool driver_present; 806 807 struct ieee80211_chanctx_conf conf; 808 }; 809 810 struct mac80211_qos_map { 811 struct cfg80211_qos_map qos_map; 812 struct rcu_head rcu_head; 813 }; 814 815 enum txq_info_flags { 816 IEEE80211_TXQ_STOP, 817 IEEE80211_TXQ_AMPDU, 818 IEEE80211_TXQ_NO_AMSDU, 819 }; 820 821 /** 822 * struct txq_info - per tid queue 823 * 824 * @tin: contains packets split into multiple flows 825 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 826 * a fq_flow which is already owned by a different tin 827 * @def_cvars: codel vars for @def_flow 828 * @frags: used to keep fragments created after dequeue 829 */ 830 struct txq_info { 831 struct fq_tin tin; 832 struct fq_flow def_flow; 833 struct codel_vars def_cvars; 834 struct codel_stats cstats; 835 struct sk_buff_head frags; 836 unsigned long flags; 837 838 /* keep last! */ 839 struct ieee80211_txq txq; 840 }; 841 842 struct ieee80211_if_mntr { 843 u32 flags; 844 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 845 846 struct list_head list; 847 }; 848 849 /** 850 * struct ieee80211_if_nan - NAN state 851 * 852 * @conf: current NAN configuration 853 * @func_ids: a bitmap of available instance_id's 854 */ 855 struct ieee80211_if_nan { 856 struct cfg80211_nan_conf conf; 857 858 /* protects function_inst_ids */ 859 spinlock_t func_lock; 860 struct idr function_inst_ids; 861 }; 862 863 struct ieee80211_sub_if_data { 864 struct list_head list; 865 866 struct wireless_dev wdev; 867 868 /* keys */ 869 struct list_head key_list; 870 871 /* count for keys needing tailroom space allocation */ 872 int crypto_tx_tailroom_needed_cnt; 873 int crypto_tx_tailroom_pending_dec; 874 struct delayed_work dec_tailroom_needed_wk; 875 876 struct net_device *dev; 877 struct ieee80211_local *local; 878 879 unsigned int flags; 880 881 unsigned long state; 882 883 char name[IFNAMSIZ]; 884 885 /* Fragment table for host-based reassembly */ 886 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 887 unsigned int fragment_next; 888 889 /* TID bitmap for NoAck policy */ 890 u16 noack_map; 891 892 /* bit field of ACM bits (BIT(802.1D tag)) */ 893 u8 wmm_acm; 894 895 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 896 struct ieee80211_key __rcu *default_unicast_key; 897 struct ieee80211_key __rcu *default_multicast_key; 898 struct ieee80211_key __rcu *default_mgmt_key; 899 900 u16 sequence_number; 901 __be16 control_port_protocol; 902 bool control_port_no_encrypt; 903 bool control_port_over_nl80211; 904 int encrypt_headroom; 905 906 atomic_t num_tx_queued; 907 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 908 struct mac80211_qos_map __rcu *qos_map; 909 910 struct work_struct csa_finalize_work; 911 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 912 struct cfg80211_chan_def csa_chandef; 913 914 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 915 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 916 917 /* context reservation -- protected with chanctx_mtx */ 918 struct ieee80211_chanctx *reserved_chanctx; 919 struct cfg80211_chan_def reserved_chandef; 920 bool reserved_radar_required; 921 bool reserved_ready; 922 923 /* used to reconfigure hardware SM PS */ 924 struct work_struct recalc_smps; 925 926 struct work_struct work; 927 struct sk_buff_head skb_queue; 928 929 u8 needed_rx_chains; 930 enum ieee80211_smps_mode smps_mode; 931 932 int user_power_level; /* in dBm */ 933 int ap_power_level; /* in dBm */ 934 935 bool radar_required; 936 struct delayed_work dfs_cac_timer_work; 937 938 /* 939 * AP this belongs to: self in AP mode and 940 * corresponding AP in VLAN mode, NULL for 941 * all others (might be needed later in IBSS) 942 */ 943 struct ieee80211_if_ap *bss; 944 945 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 946 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 947 948 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 949 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 950 951 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 952 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 953 954 union { 955 struct ieee80211_if_ap ap; 956 struct ieee80211_if_wds wds; 957 struct ieee80211_if_vlan vlan; 958 struct ieee80211_if_managed mgd; 959 struct ieee80211_if_ibss ibss; 960 struct ieee80211_if_mesh mesh; 961 struct ieee80211_if_ocb ocb; 962 struct ieee80211_if_mntr mntr; 963 struct ieee80211_if_nan nan; 964 } u; 965 966 #ifdef CONFIG_MAC80211_DEBUGFS 967 struct { 968 struct dentry *subdir_stations; 969 struct dentry *default_unicast_key; 970 struct dentry *default_multicast_key; 971 struct dentry *default_mgmt_key; 972 } debugfs; 973 #endif 974 975 /* must be last, dynamically sized area in this! */ 976 struct ieee80211_vif vif; 977 }; 978 979 static inline 980 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 981 { 982 return container_of(p, struct ieee80211_sub_if_data, vif); 983 } 984 985 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 986 __acquires(&sdata->wdev.mtx) 987 { 988 mutex_lock(&sdata->wdev.mtx); 989 __acquire(&sdata->wdev.mtx); 990 } 991 992 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 993 __releases(&sdata->wdev.mtx) 994 { 995 mutex_unlock(&sdata->wdev.mtx); 996 __release(&sdata->wdev.mtx); 997 } 998 999 #define sdata_dereference(p, sdata) \ 1000 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1001 1002 static inline void 1003 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1004 { 1005 lockdep_assert_held(&sdata->wdev.mtx); 1006 } 1007 1008 static inline int 1009 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1010 { 1011 switch (chandef->width) { 1012 case NL80211_CHAN_WIDTH_5: 1013 return 2; 1014 case NL80211_CHAN_WIDTH_10: 1015 return 1; 1016 default: 1017 return 0; 1018 } 1019 } 1020 1021 static inline int 1022 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1023 { 1024 struct ieee80211_chanctx_conf *chanctx_conf; 1025 int shift = 0; 1026 1027 rcu_read_lock(); 1028 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1029 if (chanctx_conf) 1030 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1031 rcu_read_unlock(); 1032 1033 return shift; 1034 } 1035 1036 enum { 1037 IEEE80211_RX_MSG = 1, 1038 IEEE80211_TX_STATUS_MSG = 2, 1039 }; 1040 1041 enum queue_stop_reason { 1042 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1043 IEEE80211_QUEUE_STOP_REASON_PS, 1044 IEEE80211_QUEUE_STOP_REASON_CSA, 1045 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1046 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1047 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1048 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1049 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1050 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1051 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1052 1053 IEEE80211_QUEUE_STOP_REASONS, 1054 }; 1055 1056 #ifdef CONFIG_MAC80211_LEDS 1057 struct tpt_led_trigger { 1058 char name[32]; 1059 const struct ieee80211_tpt_blink *blink_table; 1060 unsigned int blink_table_len; 1061 struct timer_list timer; 1062 struct ieee80211_local *local; 1063 unsigned long prev_traffic; 1064 unsigned long tx_bytes, rx_bytes; 1065 unsigned int active, want; 1066 bool running; 1067 }; 1068 #endif 1069 1070 /** 1071 * mac80211 scan flags - currently active scan mode 1072 * 1073 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1074 * well be on the operating channel 1075 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1076 * determine if we are on the operating channel or not 1077 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1078 * channel. This should not interrupt normal traffic. 1079 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1080 * that the scan completed. 1081 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1082 * a scan complete for an aborted scan. 1083 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1084 * cancelled. 1085 */ 1086 enum { 1087 SCAN_SW_SCANNING, 1088 SCAN_HW_SCANNING, 1089 SCAN_ONCHANNEL_SCANNING, 1090 SCAN_COMPLETED, 1091 SCAN_ABORTED, 1092 SCAN_HW_CANCELLED, 1093 }; 1094 1095 /** 1096 * enum mac80211_scan_state - scan state machine states 1097 * 1098 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1099 * determines if we should keep on scanning or switch back to the 1100 * operating channel 1101 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1102 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1103 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1104 * send out data 1105 * @SCAN_RESUME: Resume the scan and scan the next channel 1106 * @SCAN_ABORT: Abort the scan and go back to operating channel 1107 */ 1108 enum mac80211_scan_state { 1109 SCAN_DECISION, 1110 SCAN_SET_CHANNEL, 1111 SCAN_SEND_PROBE, 1112 SCAN_SUSPEND, 1113 SCAN_RESUME, 1114 SCAN_ABORT, 1115 }; 1116 1117 struct ieee80211_local { 1118 /* embed the driver visible part. 1119 * don't cast (use the static inlines below), but we keep 1120 * it first anyway so they become a no-op */ 1121 struct ieee80211_hw hw; 1122 1123 struct fq fq; 1124 struct codel_vars *cvars; 1125 struct codel_params cparams; 1126 1127 const struct ieee80211_ops *ops; 1128 1129 /* 1130 * private workqueue to mac80211. mac80211 makes this accessible 1131 * via ieee80211_queue_work() 1132 */ 1133 struct workqueue_struct *workqueue; 1134 1135 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1136 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1137 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1138 spinlock_t queue_stop_reason_lock; 1139 1140 int open_count; 1141 int monitors, cooked_mntrs; 1142 /* number of interfaces with corresponding FIF_ flags */ 1143 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1144 fif_probe_req; 1145 int probe_req_reg; 1146 unsigned int filter_flags; /* FIF_* */ 1147 1148 bool wiphy_ciphers_allocated; 1149 1150 bool use_chanctx; 1151 1152 /* protects the aggregated multicast list and filter calls */ 1153 spinlock_t filter_lock; 1154 1155 /* used for uploading changed mc list */ 1156 struct work_struct reconfig_filter; 1157 1158 /* aggregated multicast list */ 1159 struct netdev_hw_addr_list mc_list; 1160 1161 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1162 1163 /* 1164 * suspended is true if we finished all the suspend _and_ we have 1165 * not yet come up from resume. This is to be used by mac80211 1166 * to ensure driver sanity during suspend and mac80211's own 1167 * sanity. It can eventually be used for WoW as well. 1168 */ 1169 bool suspended; 1170 1171 /* 1172 * Resuming is true while suspended, but when we're reprogramming the 1173 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1174 * again even though some other parts of the stack are still suspended 1175 * and we still drop received frames to avoid waking the stack. 1176 */ 1177 bool resuming; 1178 1179 /* 1180 * quiescing is true during the suspend process _only_ to 1181 * ease timer cancelling etc. 1182 */ 1183 bool quiescing; 1184 1185 /* device is started */ 1186 bool started; 1187 1188 /* device is during a HW reconfig */ 1189 bool in_reconfig; 1190 1191 /* wowlan is enabled -- don't reconfig on resume */ 1192 bool wowlan; 1193 1194 struct work_struct radar_detected_work; 1195 1196 /* number of RX chains the hardware has */ 1197 u8 rx_chains; 1198 1199 int tx_headroom; /* required headroom for hardware/radiotap */ 1200 1201 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1202 * added to skb_queue will be processed, but frames in 1203 * skb_queue_unreliable may be dropped if the total length of these 1204 * queues increases over the limit. */ 1205 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1206 struct tasklet_struct tasklet; 1207 struct sk_buff_head skb_queue; 1208 struct sk_buff_head skb_queue_unreliable; 1209 1210 spinlock_t rx_path_lock; 1211 1212 /* Station data */ 1213 /* 1214 * The mutex only protects the list, hash table and 1215 * counter, reads are done with RCU. 1216 */ 1217 struct mutex sta_mtx; 1218 spinlock_t tim_lock; 1219 unsigned long num_sta; 1220 struct list_head sta_list; 1221 struct rhltable sta_hash; 1222 struct timer_list sta_cleanup; 1223 int sta_generation; 1224 1225 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1226 struct tasklet_struct tx_pending_tasklet; 1227 1228 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1229 1230 /* number of interfaces with allmulti RX */ 1231 atomic_t iff_allmultis; 1232 1233 struct rate_control_ref *rate_ctrl; 1234 1235 struct crypto_cipher *wep_tx_tfm; 1236 struct crypto_cipher *wep_rx_tfm; 1237 u32 wep_iv; 1238 1239 /* see iface.c */ 1240 struct list_head interfaces; 1241 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1242 struct mutex iflist_mtx; 1243 1244 /* 1245 * Key mutex, protects sdata's key_list and sta_info's 1246 * key pointers (write access, they're RCU.) 1247 */ 1248 struct mutex key_mtx; 1249 1250 /* mutex for scan and work locking */ 1251 struct mutex mtx; 1252 1253 /* Scanning and BSS list */ 1254 unsigned long scanning; 1255 struct cfg80211_ssid scan_ssid; 1256 struct cfg80211_scan_request *int_scan_req; 1257 struct cfg80211_scan_request __rcu *scan_req; 1258 struct ieee80211_scan_request *hw_scan_req; 1259 struct cfg80211_chan_def scan_chandef; 1260 enum nl80211_band hw_scan_band; 1261 int scan_channel_idx; 1262 int scan_ies_len; 1263 int hw_scan_ies_bufsize; 1264 struct cfg80211_scan_info scan_info; 1265 1266 struct work_struct sched_scan_stopped_work; 1267 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1268 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1269 u8 scan_addr[ETH_ALEN]; 1270 1271 unsigned long leave_oper_channel_time; 1272 enum mac80211_scan_state next_scan_state; 1273 struct delayed_work scan_work; 1274 struct ieee80211_sub_if_data __rcu *scan_sdata; 1275 /* For backward compatibility only -- do not use */ 1276 struct cfg80211_chan_def _oper_chandef; 1277 1278 /* Temporary remain-on-channel for off-channel operations */ 1279 struct ieee80211_channel *tmp_channel; 1280 1281 /* channel contexts */ 1282 struct list_head chanctx_list; 1283 struct mutex chanctx_mtx; 1284 1285 #ifdef CONFIG_MAC80211_LEDS 1286 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1287 struct led_trigger tpt_led; 1288 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1289 atomic_t radio_led_active, tpt_led_active; 1290 struct tpt_led_trigger *tpt_led_trigger; 1291 #endif 1292 1293 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1294 /* SNMP counters */ 1295 /* dot11CountersTable */ 1296 u32 dot11TransmittedFragmentCount; 1297 u32 dot11MulticastTransmittedFrameCount; 1298 u32 dot11FailedCount; 1299 u32 dot11RetryCount; 1300 u32 dot11MultipleRetryCount; 1301 u32 dot11FrameDuplicateCount; 1302 u32 dot11ReceivedFragmentCount; 1303 u32 dot11MulticastReceivedFrameCount; 1304 u32 dot11TransmittedFrameCount; 1305 1306 /* TX/RX handler statistics */ 1307 unsigned int tx_handlers_drop; 1308 unsigned int tx_handlers_queued; 1309 unsigned int tx_handlers_drop_wep; 1310 unsigned int tx_handlers_drop_not_assoc; 1311 unsigned int tx_handlers_drop_unauth_port; 1312 unsigned int rx_handlers_drop; 1313 unsigned int rx_handlers_queued; 1314 unsigned int rx_handlers_drop_nullfunc; 1315 unsigned int rx_handlers_drop_defrag; 1316 unsigned int tx_expand_skb_head; 1317 unsigned int tx_expand_skb_head_cloned; 1318 unsigned int rx_expand_skb_head_defrag; 1319 unsigned int rx_handlers_fragments; 1320 unsigned int tx_status_drop; 1321 #define I802_DEBUG_INC(c) (c)++ 1322 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1323 #define I802_DEBUG_INC(c) do { } while (0) 1324 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1325 1326 1327 int total_ps_buffered; /* total number of all buffered unicast and 1328 * multicast packets for power saving stations 1329 */ 1330 1331 bool pspolling; 1332 bool offchannel_ps_enabled; 1333 /* 1334 * PS can only be enabled when we have exactly one managed 1335 * interface (and monitors) in PS, this then points there. 1336 */ 1337 struct ieee80211_sub_if_data *ps_sdata; 1338 struct work_struct dynamic_ps_enable_work; 1339 struct work_struct dynamic_ps_disable_work; 1340 struct timer_list dynamic_ps_timer; 1341 struct notifier_block ifa_notifier; 1342 struct notifier_block ifa6_notifier; 1343 1344 /* 1345 * The dynamic ps timeout configured from user space via WEXT - 1346 * this will override whatever chosen by mac80211 internally. 1347 */ 1348 int dynamic_ps_forced_timeout; 1349 1350 int user_power_level; /* in dBm, for all interfaces */ 1351 1352 enum ieee80211_smps_mode smps_mode; 1353 1354 struct work_struct restart_work; 1355 1356 #ifdef CONFIG_MAC80211_DEBUGFS 1357 struct local_debugfsdentries { 1358 struct dentry *rcdir; 1359 struct dentry *keys; 1360 } debugfs; 1361 #endif 1362 1363 /* 1364 * Remain-on-channel support 1365 */ 1366 struct delayed_work roc_work; 1367 struct list_head roc_list; 1368 struct work_struct hw_roc_start, hw_roc_done; 1369 unsigned long hw_roc_start_time; 1370 u64 roc_cookie_counter; 1371 1372 struct idr ack_status_frames; 1373 spinlock_t ack_status_lock; 1374 1375 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1376 1377 /* virtual monitor interface */ 1378 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1379 struct cfg80211_chan_def monitor_chandef; 1380 1381 /* extended capabilities provided by mac80211 */ 1382 u8 ext_capa[8]; 1383 1384 /* TDLS channel switch */ 1385 struct work_struct tdls_chsw_work; 1386 struct sk_buff_head skb_queue_tdls_chsw; 1387 }; 1388 1389 static inline struct ieee80211_sub_if_data * 1390 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1391 { 1392 return netdev_priv(dev); 1393 } 1394 1395 static inline struct ieee80211_sub_if_data * 1396 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1397 { 1398 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1399 } 1400 1401 static inline struct ieee80211_supported_band * 1402 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1403 { 1404 struct ieee80211_local *local = sdata->local; 1405 struct ieee80211_chanctx_conf *chanctx_conf; 1406 enum nl80211_band band; 1407 1408 rcu_read_lock(); 1409 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1410 1411 if (WARN_ON(!chanctx_conf)) { 1412 rcu_read_unlock(); 1413 return NULL; 1414 } 1415 1416 band = chanctx_conf->def.chan->band; 1417 rcu_read_unlock(); 1418 1419 return local->hw.wiphy->bands[band]; 1420 } 1421 1422 /* this struct holds the value parsing from channel switch IE */ 1423 struct ieee80211_csa_ie { 1424 struct cfg80211_chan_def chandef; 1425 u8 mode; 1426 u8 count; 1427 u8 ttl; 1428 u16 pre_value; 1429 u16 reason_code; 1430 }; 1431 1432 /* Parsed Information Elements */ 1433 struct ieee802_11_elems { 1434 const u8 *ie_start; 1435 size_t total_len; 1436 1437 /* pointers to IEs */ 1438 const struct ieee80211_tdls_lnkie *lnk_id; 1439 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1440 const u8 *ext_capab; 1441 const u8 *ssid; 1442 const u8 *supp_rates; 1443 const u8 *ds_params; 1444 const struct ieee80211_tim_ie *tim; 1445 const u8 *challenge; 1446 const u8 *rsn; 1447 const u8 *erp_info; 1448 const u8 *ext_supp_rates; 1449 const u8 *wmm_info; 1450 const u8 *wmm_param; 1451 const struct ieee80211_ht_cap *ht_cap_elem; 1452 const struct ieee80211_ht_operation *ht_operation; 1453 const struct ieee80211_vht_cap *vht_cap_elem; 1454 const struct ieee80211_vht_operation *vht_operation; 1455 const struct ieee80211_meshconf_ie *mesh_config; 1456 const u8 *mesh_id; 1457 const u8 *peering; 1458 const __le16 *awake_window; 1459 const u8 *preq; 1460 const u8 *prep; 1461 const u8 *perr; 1462 const struct ieee80211_rann_ie *rann; 1463 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1464 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1465 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1466 const u8 *country_elem; 1467 const u8 *pwr_constr_elem; 1468 const u8 *cisco_dtpc_elem; 1469 const struct ieee80211_timeout_interval_ie *timeout_int; 1470 const u8 *opmode_notif; 1471 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1472 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1473 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1474 1475 /* length of them, respectively */ 1476 u8 ext_capab_len; 1477 u8 ssid_len; 1478 u8 supp_rates_len; 1479 u8 tim_len; 1480 u8 challenge_len; 1481 u8 rsn_len; 1482 u8 ext_supp_rates_len; 1483 u8 wmm_info_len; 1484 u8 wmm_param_len; 1485 u8 mesh_id_len; 1486 u8 peering_len; 1487 u8 preq_len; 1488 u8 prep_len; 1489 u8 perr_len; 1490 u8 country_elem_len; 1491 1492 /* whether a parse error occurred while retrieving these elements */ 1493 bool parse_error; 1494 }; 1495 1496 static inline struct ieee80211_local *hw_to_local( 1497 struct ieee80211_hw *hw) 1498 { 1499 return container_of(hw, struct ieee80211_local, hw); 1500 } 1501 1502 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1503 { 1504 return container_of(txq, struct txq_info, txq); 1505 } 1506 1507 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1508 { 1509 struct txq_info *txqi = to_txq_info(txq); 1510 1511 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1512 } 1513 1514 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1515 { 1516 return ether_addr_equal(raddr, addr) || 1517 is_broadcast_ether_addr(raddr); 1518 } 1519 1520 static inline bool 1521 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1522 { 1523 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1524 status->flag & RX_FLAG_MACTIME_END); 1525 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1526 return true; 1527 /* can't handle non-legacy preamble yet */ 1528 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1529 status->encoding == RX_ENC_LEGACY) 1530 return true; 1531 return false; 1532 } 1533 1534 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1535 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1536 1537 /* This function returns the number of multicast stations connected to this 1538 * interface. It returns -1 if that number is not tracked, that is for netdevs 1539 * not in AP or AP_VLAN mode or when using 4addr. 1540 */ 1541 static inline int 1542 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1543 { 1544 if (sdata->vif.type == NL80211_IFTYPE_AP) 1545 return atomic_read(&sdata->u.ap.num_mcast_sta); 1546 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1547 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1548 return -1; 1549 } 1550 1551 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1552 struct ieee80211_rx_status *status, 1553 unsigned int mpdu_len, 1554 unsigned int mpdu_offset); 1555 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1556 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1557 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1558 u32 changed); 1559 void ieee80211_configure_filter(struct ieee80211_local *local); 1560 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1561 1562 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1563 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1564 u64 *cookie, gfp_t gfp); 1565 1566 void ieee80211_check_fast_rx(struct sta_info *sta); 1567 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1568 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1569 void ieee80211_clear_fast_rx(struct sta_info *sta); 1570 1571 /* STA code */ 1572 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1573 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1574 struct cfg80211_auth_request *req); 1575 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1576 struct cfg80211_assoc_request *req); 1577 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1578 struct cfg80211_deauth_request *req); 1579 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1580 struct cfg80211_disassoc_request *req); 1581 void ieee80211_send_pspoll(struct ieee80211_local *local, 1582 struct ieee80211_sub_if_data *sdata); 1583 void ieee80211_recalc_ps(struct ieee80211_local *local); 1584 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1585 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1586 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1587 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1588 struct sk_buff *skb); 1589 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1590 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1591 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1592 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1593 __le16 fc, bool acked); 1594 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1596 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1597 1598 /* IBSS code */ 1599 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1600 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1601 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1602 const u8 *bssid, const u8 *addr, u32 supp_rates); 1603 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1604 struct cfg80211_ibss_params *params); 1605 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1606 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1607 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1608 struct sk_buff *skb); 1609 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1610 struct cfg80211_csa_settings *csa_settings); 1611 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1612 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1613 1614 /* OCB code */ 1615 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1616 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1617 const u8 *bssid, const u8 *addr, u32 supp_rates); 1618 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1619 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1620 struct ocb_setup *setup); 1621 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1622 1623 /* mesh code */ 1624 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1625 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1626 struct sk_buff *skb); 1627 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1628 struct cfg80211_csa_settings *csa_settings); 1629 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1630 1631 /* scan/BSS handling */ 1632 void ieee80211_scan_work(struct work_struct *work); 1633 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1634 const u8 *ssid, u8 ssid_len, 1635 struct ieee80211_channel **channels, 1636 unsigned int n_channels, 1637 enum nl80211_bss_scan_width scan_width); 1638 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1639 struct cfg80211_scan_request *req); 1640 void ieee80211_scan_cancel(struct ieee80211_local *local); 1641 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1642 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1643 1644 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1645 struct ieee80211_bss * 1646 ieee80211_bss_info_update(struct ieee80211_local *local, 1647 struct ieee80211_rx_status *rx_status, 1648 struct ieee80211_mgmt *mgmt, 1649 size_t len, 1650 struct ieee802_11_elems *elems, 1651 struct ieee80211_channel *channel); 1652 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1653 struct ieee80211_bss *bss); 1654 1655 /* scheduled scan handling */ 1656 int 1657 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1658 struct cfg80211_sched_scan_request *req); 1659 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1660 struct cfg80211_sched_scan_request *req); 1661 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1662 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1663 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1664 1665 /* off-channel/mgmt-tx */ 1666 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1667 void ieee80211_offchannel_return(struct ieee80211_local *local); 1668 void ieee80211_roc_setup(struct ieee80211_local *local); 1669 void ieee80211_start_next_roc(struct ieee80211_local *local); 1670 void ieee80211_roc_purge(struct ieee80211_local *local, 1671 struct ieee80211_sub_if_data *sdata); 1672 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1673 struct ieee80211_channel *chan, 1674 unsigned int duration, u64 *cookie); 1675 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1676 struct wireless_dev *wdev, u64 cookie); 1677 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1678 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1679 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1680 struct wireless_dev *wdev, u64 cookie); 1681 1682 /* channel switch handling */ 1683 void ieee80211_csa_finalize_work(struct work_struct *work); 1684 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1685 struct cfg80211_csa_settings *params); 1686 1687 /* interface handling */ 1688 int ieee80211_iface_init(void); 1689 void ieee80211_iface_exit(void); 1690 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1691 unsigned char name_assign_type, 1692 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1693 struct vif_params *params); 1694 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1695 enum nl80211_iftype type); 1696 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1697 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1698 u32 ieee80211_idle_off(struct ieee80211_local *local); 1699 void ieee80211_recalc_idle(struct ieee80211_local *local); 1700 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1701 const int offset); 1702 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1703 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1704 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1705 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1706 1707 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1708 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1709 bool update_bss); 1710 1711 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1712 { 1713 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1714 } 1715 1716 /* tx handling */ 1717 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1718 void ieee80211_tx_pending(unsigned long data); 1719 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1720 struct net_device *dev); 1721 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1722 struct net_device *dev); 1723 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1724 struct net_device *dev, 1725 u32 info_flags); 1726 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1727 struct sk_buff_head *skbs); 1728 struct sk_buff * 1729 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1730 struct sk_buff *skb, u32 info_flags); 1731 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1732 struct ieee80211_supported_band *sband, 1733 int retry_count, int shift, bool send_to_cooked); 1734 1735 void ieee80211_check_fast_xmit(struct sta_info *sta); 1736 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1737 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1738 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1739 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1740 const u8 *buf, size_t len, 1741 const u8 *dest, __be16 proto, bool unencrypted); 1742 1743 /* HT */ 1744 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1745 struct ieee80211_sta_ht_cap *ht_cap); 1746 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1747 struct ieee80211_supported_band *sband, 1748 const struct ieee80211_ht_cap *ht_cap_ie, 1749 struct sta_info *sta); 1750 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1751 const u8 *da, u16 tid, 1752 u16 initiator, u16 reason_code); 1753 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1754 enum ieee80211_smps_mode smps, const u8 *da, 1755 const u8 *bssid); 1756 void ieee80211_request_smps_ap_work(struct work_struct *work); 1757 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1758 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1759 enum ieee80211_smps_mode smps_mode_new); 1760 1761 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1762 u16 initiator, u16 reason, bool stop); 1763 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1764 u16 initiator, u16 reason, bool stop); 1765 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1766 u8 dialog_token, u16 timeout, 1767 u16 start_seq_num, u16 ba_policy, u16 tid, 1768 u16 buf_size, bool tx, bool auto_seq); 1769 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1770 enum ieee80211_agg_stop_reason reason); 1771 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1772 struct sta_info *sta, 1773 struct ieee80211_mgmt *mgmt, size_t len); 1774 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1775 struct sta_info *sta, 1776 struct ieee80211_mgmt *mgmt, 1777 size_t len); 1778 void ieee80211_process_addba_request(struct ieee80211_local *local, 1779 struct sta_info *sta, 1780 struct ieee80211_mgmt *mgmt, 1781 size_t len); 1782 1783 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1784 enum ieee80211_agg_stop_reason reason); 1785 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1786 enum ieee80211_agg_stop_reason reason); 1787 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1788 struct tid_ampdu_tx *tid_tx); 1789 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1790 struct tid_ampdu_tx *tid_tx); 1791 void ieee80211_ba_session_work(struct work_struct *work); 1792 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1793 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1794 1795 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1796 enum nl80211_smps_mode 1797 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1798 1799 /* VHT */ 1800 void 1801 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1802 struct ieee80211_supported_band *sband, 1803 const struct ieee80211_vht_cap *vht_cap_ie, 1804 struct sta_info *sta); 1805 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1806 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1807 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1808 enum ieee80211_sta_rx_bandwidth 1809 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1810 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1811 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1812 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1813 struct ieee80211_mgmt *mgmt); 1814 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1815 struct sta_info *sta, u8 opmode, 1816 enum nl80211_band band); 1817 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1818 struct sta_info *sta, u8 opmode, 1819 enum nl80211_band band); 1820 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1821 struct ieee80211_sta_vht_cap *vht_cap); 1822 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1823 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1824 enum nl80211_chan_width 1825 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1826 1827 /* Spectrum management */ 1828 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1829 struct ieee80211_mgmt *mgmt, 1830 size_t len); 1831 /** 1832 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1833 * @sdata: the sdata of the interface which has received the frame 1834 * @elems: parsed 802.11 elements received with the frame 1835 * @current_band: indicates the current band 1836 * @sta_flags: contains information about own capabilities and restrictions 1837 * to decide which channel switch announcements can be accepted. Only the 1838 * following subset of &enum ieee80211_sta_flags are evaluated: 1839 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1840 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1841 * %IEEE80211_STA_DISABLE_160MHZ. 1842 * @bssid: the currently connected bssid (for reporting) 1843 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1844 All of them will be filled with if success only. 1845 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1846 */ 1847 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1848 struct ieee802_11_elems *elems, 1849 enum nl80211_band current_band, 1850 u32 sta_flags, u8 *bssid, 1851 struct ieee80211_csa_ie *csa_ie); 1852 1853 /* Suspend/resume and hw reconfiguration */ 1854 int ieee80211_reconfig(struct ieee80211_local *local); 1855 void ieee80211_stop_device(struct ieee80211_local *local); 1856 1857 int __ieee80211_suspend(struct ieee80211_hw *hw, 1858 struct cfg80211_wowlan *wowlan); 1859 1860 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1861 { 1862 struct ieee80211_local *local = hw_to_local(hw); 1863 1864 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1865 !test_bit(SCAN_COMPLETED, &local->scanning), 1866 "%s: resume with hardware scan still in progress\n", 1867 wiphy_name(hw->wiphy)); 1868 1869 return ieee80211_reconfig(hw_to_local(hw)); 1870 } 1871 1872 /* utility functions/constants */ 1873 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1874 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1875 int rate, int erp, int short_preamble, 1876 int shift); 1877 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1878 struct ieee80211_tx_queue_params *qparam, 1879 int ac); 1880 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1881 bool bss_notify, bool enable_qos); 1882 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1883 struct sta_info *sta, struct sk_buff *skb); 1884 1885 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1886 struct sk_buff *skb, int tid, 1887 enum nl80211_band band); 1888 1889 static inline void 1890 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1891 struct sk_buff *skb, int tid, 1892 enum nl80211_band band) 1893 { 1894 rcu_read_lock(); 1895 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1896 rcu_read_unlock(); 1897 } 1898 1899 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1900 struct sk_buff *skb, int tid) 1901 { 1902 struct ieee80211_chanctx_conf *chanctx_conf; 1903 1904 rcu_read_lock(); 1905 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1906 if (WARN_ON(!chanctx_conf)) { 1907 rcu_read_unlock(); 1908 kfree_skb(skb); 1909 return; 1910 } 1911 1912 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1913 chanctx_conf->def.chan->band); 1914 rcu_read_unlock(); 1915 } 1916 1917 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1918 struct sk_buff *skb) 1919 { 1920 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1921 ieee80211_tx_skb_tid(sdata, skb, 7); 1922 } 1923 1924 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1925 struct ieee802_11_elems *elems, 1926 u64 filter, u32 crc); 1927 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1928 bool action, 1929 struct ieee802_11_elems *elems) 1930 { 1931 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1932 } 1933 1934 1935 extern const int ieee802_1d_to_ac[8]; 1936 1937 static inline int ieee80211_ac_from_tid(int tid) 1938 { 1939 return ieee802_1d_to_ac[tid & 7]; 1940 } 1941 1942 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1943 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1944 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1945 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1946 struct ieee80211_sub_if_data *sdata, 1947 bool powersave); 1948 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1949 struct ieee80211_hdr *hdr); 1950 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1951 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1952 1953 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1954 unsigned long queues, 1955 enum queue_stop_reason reason, 1956 bool refcounted); 1957 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1958 struct ieee80211_sub_if_data *sdata, 1959 enum queue_stop_reason reason); 1960 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1961 struct ieee80211_sub_if_data *sdata, 1962 enum queue_stop_reason reason); 1963 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1964 unsigned long queues, 1965 enum queue_stop_reason reason, 1966 bool refcounted); 1967 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1968 enum queue_stop_reason reason, 1969 bool refcounted); 1970 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1971 enum queue_stop_reason reason, 1972 bool refcounted); 1973 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1974 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1975 struct sk_buff *skb); 1976 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1977 struct sk_buff_head *skbs); 1978 void ieee80211_flush_queues(struct ieee80211_local *local, 1979 struct ieee80211_sub_if_data *sdata, bool drop); 1980 void __ieee80211_flush_queues(struct ieee80211_local *local, 1981 struct ieee80211_sub_if_data *sdata, 1982 unsigned int queues, bool drop); 1983 1984 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1985 { 1986 /* 1987 * If quiescing is set, we are racing with __ieee80211_suspend. 1988 * __ieee80211_suspend flushes the workers after setting quiescing, 1989 * and we check quiescing / suspended before enqueing new workers. 1990 * We should abort the worker to avoid the races below. 1991 */ 1992 if (local->quiescing) 1993 return false; 1994 1995 /* 1996 * We might already be suspended if the following scenario occurs: 1997 * __ieee80211_suspend Control path 1998 * 1999 * if (local->quiescing) 2000 * return; 2001 * local->quiescing = true; 2002 * flush_workqueue(); 2003 * queue_work(...); 2004 * local->suspended = true; 2005 * local->quiescing = false; 2006 * worker starts running... 2007 */ 2008 if (local->suspended) 2009 return false; 2010 2011 return true; 2012 } 2013 2014 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2015 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2016 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2017 struct sta_info *sta, 2018 struct txq_info *txq, int tid); 2019 void ieee80211_txq_purge(struct ieee80211_local *local, 2020 struct txq_info *txqi); 2021 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2022 struct ieee80211_sub_if_data *sdata); 2023 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2024 u16 transaction, u16 auth_alg, u16 status, 2025 const u8 *extra, size_t extra_len, const u8 *bssid, 2026 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2027 u32 tx_flags); 2028 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2029 const u8 *bssid, u16 stype, u16 reason, 2030 bool send_frame, u8 *frame_buf); 2031 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2032 size_t buffer_len, 2033 struct ieee80211_scan_ies *ie_desc, 2034 const u8 *ie, size_t ie_len, 2035 u8 bands_used, u32 *rate_masks, 2036 struct cfg80211_chan_def *chandef); 2037 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2038 const u8 *src, const u8 *dst, 2039 u32 ratemask, 2040 struct ieee80211_channel *chan, 2041 const u8 *ssid, size_t ssid_len, 2042 const u8 *ie, size_t ie_len, 2043 bool directed); 2044 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 2045 const u8 *src, const u8 *dst, 2046 const u8 *ssid, size_t ssid_len, 2047 const u8 *ie, size_t ie_len, 2048 u32 ratemask, bool directed, u32 tx_flags, 2049 struct ieee80211_channel *channel, bool scan); 2050 2051 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2052 struct ieee802_11_elems *elems, 2053 enum nl80211_band band, u32 *basic_rates); 2054 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2055 enum ieee80211_smps_mode smps_mode); 2056 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2057 enum ieee80211_smps_mode smps_mode); 2058 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2059 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2060 2061 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2062 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2063 u16 cap); 2064 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2065 const struct cfg80211_chan_def *chandef, 2066 u16 prot_mode, bool rifs_mode); 2067 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2068 const struct cfg80211_chan_def *chandef); 2069 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2070 u32 cap); 2071 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2072 const struct cfg80211_chan_def *chandef); 2073 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2074 const struct ieee80211_supported_band *sband, 2075 const u8 *srates, int srates_len, u32 *rates); 2076 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2077 struct sk_buff *skb, bool need_basic, 2078 enum nl80211_band band); 2079 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2080 struct sk_buff *skb, bool need_basic, 2081 enum nl80211_band band); 2082 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2083 2084 /* channel management */ 2085 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2086 struct cfg80211_chan_def *chandef); 2087 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2088 struct cfg80211_chan_def *chandef); 2089 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2090 2091 int __must_check 2092 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2093 const struct cfg80211_chan_def *chandef, 2094 enum ieee80211_chanctx_mode mode); 2095 int __must_check 2096 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2097 const struct cfg80211_chan_def *chandef, 2098 enum ieee80211_chanctx_mode mode, 2099 bool radar_required); 2100 int __must_check 2101 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2102 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2103 2104 int __must_check 2105 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2106 const struct cfg80211_chan_def *chandef, 2107 u32 *changed); 2108 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2109 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2110 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2111 bool clear); 2112 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2113 struct ieee80211_chanctx *ctx); 2114 2115 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2116 struct ieee80211_chanctx *chanctx); 2117 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2118 struct ieee80211_chanctx *ctx); 2119 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2120 2121 void ieee80211_dfs_cac_timer(unsigned long data); 2122 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2123 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2124 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2125 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2126 struct cfg80211_csa_settings *csa_settings); 2127 2128 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2129 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2130 const struct ieee80211_cipher_scheme * 2131 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2132 enum nl80211_iftype iftype); 2133 int ieee80211_cs_headroom(struct ieee80211_local *local, 2134 struct cfg80211_crypto_settings *crypto, 2135 enum nl80211_iftype iftype); 2136 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2137 struct ieee80211_sub_if_data *sdata); 2138 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2139 const struct cfg80211_chan_def *chandef, 2140 enum ieee80211_chanctx_mode chanmode, 2141 u8 radar_detect); 2142 int ieee80211_max_num_channels(struct ieee80211_local *local); 2143 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2144 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2145 struct ieee80211_chanctx *ctx); 2146 2147 /* TDLS */ 2148 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2149 const u8 *peer, u8 action_code, u8 dialog_token, 2150 u16 status_code, u32 peer_capability, 2151 bool initiator, const u8 *extra_ies, 2152 size_t extra_ies_len); 2153 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2154 const u8 *peer, enum nl80211_tdls_operation oper); 2155 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2156 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2157 const u8 *addr, u8 oper_class, 2158 struct cfg80211_chan_def *chandef); 2159 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2160 struct net_device *dev, 2161 const u8 *addr); 2162 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2163 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2164 2165 extern const struct ethtool_ops ieee80211_ethtool_ops; 2166 2167 #ifdef CONFIG_MAC80211_NOINLINE 2168 #define debug_noinline noinline 2169 #else 2170 #define debug_noinline 2171 #endif 2172 2173 #endif /* IEEE80211_I_H */ 2174