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 2013-2014 Intel Mobile Communications GmbH 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef IEEE80211_I_H 14 #define IEEE80211_I_H 15 16 #include <linux/kernel.h> 17 #include <linux/device.h> 18 #include <linux/if_ether.h> 19 #include <linux/interrupt.h> 20 #include <linux/list.h> 21 #include <linux/netdevice.h> 22 #include <linux/skbuff.h> 23 #include <linux/workqueue.h> 24 #include <linux/types.h> 25 #include <linux/spinlock.h> 26 #include <linux/etherdevice.h> 27 #include <linux/leds.h> 28 #include <linux/idr.h> 29 #include <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include "key.h" 33 #include "sta_info.h" 34 #include "debug.h" 35 36 struct ieee80211_local; 37 38 /* Maximum number of broadcast/multicast frames to buffer when some of the 39 * associated stations are using power saving. */ 40 #define AP_MAX_BC_BUFFER 128 41 42 /* Maximum number of frames buffered to all STAs, including multicast frames. 43 * Note: increasing this limit increases the potential memory requirement. Each 44 * frame can be up to about 2 kB long. */ 45 #define TOTAL_MAX_TX_BUFFER 512 46 47 /* Required encryption head and tailroom */ 48 #define IEEE80211_ENCRYPT_HEADROOM 8 49 #define IEEE80211_ENCRYPT_TAILROOM 18 50 51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 52 * reception of at least three fragmented frames. This limit can be increased 53 * by changing this define, at the cost of slower frame reassembly and 54 * increased memory use (about 2 kB of RAM per entry). */ 55 #define IEEE80211_FRAGMENT_MAX 4 56 57 /* power level hasn't been configured (or set to automatic) */ 58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 59 60 /* 61 * Some APs experience problems when working with U-APSD. Decrease the 62 * probability of that happening by using legacy mode for all ACs but VO. 63 * The AP that caused us trouble was a Cisco 4410N. It ignores our 64 * setting, and always treats non-VO ACs as legacy. 65 */ 66 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 67 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 68 69 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 70 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 71 72 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 73 74 struct ieee80211_fragment_entry { 75 unsigned long first_frag_time; 76 unsigned int seq; 77 unsigned int rx_queue; 78 unsigned int last_frag; 79 unsigned int extra_len; 80 struct sk_buff_head skb_list; 81 int ccmp; /* Whether fragments were encrypted with CCMP */ 82 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 83 }; 84 85 86 struct ieee80211_bss { 87 u32 device_ts_beacon, device_ts_presp; 88 89 bool wmm_used; 90 bool uapsd_supported; 91 92 #define IEEE80211_MAX_SUPP_RATES 32 93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 94 size_t supp_rates_len; 95 struct ieee80211_rate *beacon_rate; 96 97 /* 98 * During association, we save an ERP value from a probe response so 99 * that we can feed ERP info to the driver when handling the 100 * association completes. these fields probably won't be up-to-date 101 * otherwise, you probably don't want to use them. 102 */ 103 bool has_erp_value; 104 u8 erp_value; 105 106 /* Keep track of the corruption of the last beacon/probe response. */ 107 u8 corrupt_data; 108 109 /* Keep track of what bits of information we have valid info for. */ 110 u8 valid_data; 111 }; 112 113 /** 114 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 115 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 116 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 117 * 118 * These are bss flags that are attached to a bss in the 119 * @corrupt_data field of &struct ieee80211_bss. 120 */ 121 enum ieee80211_bss_corrupt_data_flags { 122 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 123 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 124 }; 125 126 /** 127 * enum ieee80211_valid_data_flags - BSS valid data flags 128 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 129 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 130 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 131 * 132 * These are bss flags that are attached to a bss in the 133 * @valid_data field of &struct ieee80211_bss. They show which parts 134 * of the data structure were received as a result of an un-corrupted 135 * beacon/probe response. 136 */ 137 enum ieee80211_bss_valid_data_flags { 138 IEEE80211_BSS_VALID_WMM = BIT(1), 139 IEEE80211_BSS_VALID_RATES = BIT(2), 140 IEEE80211_BSS_VALID_ERP = BIT(3) 141 }; 142 143 typedef unsigned __bitwise__ ieee80211_tx_result; 144 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 145 #define TX_DROP ((__force ieee80211_tx_result) 1u) 146 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 147 148 #define IEEE80211_TX_UNICAST BIT(1) 149 #define IEEE80211_TX_PS_BUFFERED BIT(2) 150 151 struct ieee80211_tx_data { 152 struct sk_buff *skb; 153 struct sk_buff_head skbs; 154 struct ieee80211_local *local; 155 struct ieee80211_sub_if_data *sdata; 156 struct sta_info *sta; 157 struct ieee80211_key *key; 158 struct ieee80211_tx_rate rate; 159 160 unsigned int flags; 161 }; 162 163 164 typedef unsigned __bitwise__ ieee80211_rx_result; 165 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 166 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 167 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 168 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 169 170 /** 171 * enum ieee80211_packet_rx_flags - packet RX flags 172 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 173 * (incl. multicast frames) 174 * @IEEE80211_RX_FRAGMENTED: fragmented frame 175 * @IEEE80211_RX_AMSDU: a-MSDU packet 176 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 177 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 178 * 179 * These are per-frame flags that are attached to a frame in the 180 * @rx_flags field of &struct ieee80211_rx_status. 181 */ 182 enum ieee80211_packet_rx_flags { 183 IEEE80211_RX_RA_MATCH = BIT(1), 184 IEEE80211_RX_FRAGMENTED = BIT(2), 185 IEEE80211_RX_AMSDU = BIT(3), 186 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 187 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 188 }; 189 190 /** 191 * enum ieee80211_rx_flags - RX data flags 192 * 193 * @IEEE80211_RX_CMNTR: received on cooked monitor already 194 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 195 * to cfg80211_report_obss_beacon(). 196 * 197 * These flags are used across handling multiple interfaces 198 * for a single frame. 199 */ 200 enum ieee80211_rx_flags { 201 IEEE80211_RX_CMNTR = BIT(0), 202 IEEE80211_RX_BEACON_REPORTED = BIT(1), 203 }; 204 205 struct ieee80211_rx_data { 206 struct sk_buff *skb; 207 struct ieee80211_local *local; 208 struct ieee80211_sub_if_data *sdata; 209 struct sta_info *sta; 210 struct ieee80211_key *key; 211 212 unsigned int flags; 213 214 /* 215 * Index into sequence numbers array, 0..16 216 * since the last (16) is used for non-QoS, 217 * will be 16 on non-QoS frames. 218 */ 219 int seqno_idx; 220 221 /* 222 * Index into the security IV/PN arrays, 0..16 223 * since the last (16) is used for CCMP-encrypted 224 * management frames, will be set to 16 on mgmt 225 * frames and 0 on non-QoS frames. 226 */ 227 int security_idx; 228 229 u32 tkip_iv32; 230 u16 tkip_iv16; 231 }; 232 233 struct ieee80211_csa_settings { 234 const u16 *counter_offsets_beacon; 235 const u16 *counter_offsets_presp; 236 237 int n_counter_offsets_beacon; 238 int n_counter_offsets_presp; 239 240 u8 count; 241 }; 242 243 struct beacon_data { 244 u8 *head, *tail; 245 int head_len, tail_len; 246 struct ieee80211_meshconf_ie *meshconf; 247 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 248 u8 csa_current_counter; 249 struct rcu_head rcu_head; 250 }; 251 252 struct probe_resp { 253 struct rcu_head rcu_head; 254 int len; 255 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 256 u8 data[0]; 257 }; 258 259 struct ps_data { 260 /* yes, this looks ugly, but guarantees that we can later use 261 * bitmap_empty :) 262 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 263 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 264 __aligned(__alignof__(unsigned long)); 265 struct sk_buff_head bc_buf; 266 atomic_t num_sta_ps; /* number of stations in PS mode */ 267 int dtim_count; 268 bool dtim_bc_mc; 269 }; 270 271 struct ieee80211_if_ap { 272 struct beacon_data __rcu *beacon; 273 struct probe_resp __rcu *probe_resp; 274 275 /* to be used after channel switch. */ 276 struct cfg80211_beacon_data *next_beacon; 277 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 278 279 struct ps_data ps; 280 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 281 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 282 driver_smps_mode; /* smps mode request */ 283 284 struct work_struct request_smps_work; 285 }; 286 287 struct ieee80211_if_wds { 288 struct sta_info *sta; 289 u8 remote_addr[ETH_ALEN]; 290 }; 291 292 struct ieee80211_if_vlan { 293 struct list_head list; /* write-protected with RTNL and local->mtx */ 294 295 /* used for all tx if the VLAN is configured to 4-addr mode */ 296 struct sta_info __rcu *sta; 297 }; 298 299 struct mesh_stats { 300 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 301 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 302 __u32 fwded_frames; /* Mesh total forwarded frames */ 303 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 304 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 305 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 306 }; 307 308 #define PREQ_Q_F_START 0x1 309 #define PREQ_Q_F_REFRESH 0x2 310 struct mesh_preq_queue { 311 struct list_head list; 312 u8 dst[ETH_ALEN]; 313 u8 flags; 314 }; 315 316 #if HZ/100 == 0 317 #define IEEE80211_ROC_MIN_LEFT 1 318 #else 319 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 320 #endif 321 322 struct ieee80211_roc_work { 323 struct list_head list; 324 struct list_head dependents; 325 326 struct delayed_work work; 327 328 struct ieee80211_sub_if_data *sdata; 329 330 struct ieee80211_channel *chan; 331 332 bool started, abort, hw_begun, notified; 333 bool to_be_freed; 334 bool on_channel; 335 336 unsigned long hw_start_time; 337 338 u32 duration, req_duration; 339 struct sk_buff *frame; 340 u64 cookie, mgmt_tx_cookie; 341 enum ieee80211_roc_type type; 342 }; 343 344 /* flags used in struct ieee80211_if_managed.flags */ 345 enum ieee80211_sta_flags { 346 IEEE80211_STA_CONNECTION_POLL = BIT(1), 347 IEEE80211_STA_CONTROL_PORT = BIT(2), 348 IEEE80211_STA_DISABLE_HT = BIT(4), 349 IEEE80211_STA_MFP_ENABLED = BIT(6), 350 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 351 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 352 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 353 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 354 IEEE80211_STA_DISABLE_VHT = BIT(11), 355 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 356 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 357 IEEE80211_STA_DISABLE_WMM = BIT(14), 358 IEEE80211_STA_ENABLE_RRM = BIT(15), 359 }; 360 361 struct ieee80211_mgd_auth_data { 362 struct cfg80211_bss *bss; 363 unsigned long timeout; 364 int tries; 365 u16 algorithm, expected_transaction; 366 367 u8 key[WLAN_KEY_LEN_WEP104]; 368 u8 key_len, key_idx; 369 bool done; 370 bool timeout_started; 371 372 u16 sae_trans, sae_status; 373 size_t data_len; 374 u8 data[]; 375 }; 376 377 struct ieee80211_mgd_assoc_data { 378 struct cfg80211_bss *bss; 379 const u8 *supp_rates; 380 381 unsigned long timeout; 382 int tries; 383 384 u16 capability; 385 u8 prev_bssid[ETH_ALEN]; 386 u8 ssid[IEEE80211_MAX_SSID_LEN]; 387 u8 ssid_len; 388 u8 supp_rates_len; 389 bool wmm, uapsd; 390 bool need_beacon; 391 bool synced; 392 bool timeout_started; 393 394 u8 ap_ht_param; 395 396 struct ieee80211_vht_cap ap_vht_cap; 397 398 size_t ie_len; 399 u8 ie[]; 400 }; 401 402 struct ieee80211_sta_tx_tspec { 403 /* timestamp of the first packet in the time slice */ 404 unsigned long time_slice_start; 405 406 u32 admitted_time; /* in usecs, unlike over the air */ 407 u8 tsid; 408 s8 up; /* signed to be able to invalidate with -1 during teardown */ 409 410 /* consumed TX time in microseconds in the time slice */ 411 u32 consumed_tx_time; 412 enum { 413 TX_TSPEC_ACTION_NONE = 0, 414 TX_TSPEC_ACTION_DOWNGRADE, 415 TX_TSPEC_ACTION_STOP_DOWNGRADE, 416 } action; 417 bool downgraded; 418 }; 419 420 struct ieee80211_if_managed { 421 struct timer_list timer; 422 struct timer_list conn_mon_timer; 423 struct timer_list bcn_mon_timer; 424 struct timer_list chswitch_timer; 425 struct work_struct monitor_work; 426 struct work_struct chswitch_work; 427 struct work_struct beacon_connection_loss_work; 428 struct work_struct csa_connection_drop_work; 429 430 unsigned long beacon_timeout; 431 unsigned long probe_timeout; 432 int probe_send_count; 433 bool nullfunc_failed; 434 bool connection_loss; 435 436 struct cfg80211_bss *associated; 437 struct ieee80211_mgd_auth_data *auth_data; 438 struct ieee80211_mgd_assoc_data *assoc_data; 439 440 u8 bssid[ETH_ALEN]; 441 442 u16 aid; 443 444 bool powersave; /* powersave requested for this iface */ 445 bool broken_ap; /* AP is broken -- turn off powersave */ 446 bool have_beacon; 447 u8 dtim_period; 448 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 449 driver_smps_mode; /* smps mode request */ 450 451 struct work_struct request_smps_work; 452 453 unsigned int flags; 454 455 bool csa_waiting_bcn; 456 457 bool beacon_crc_valid; 458 u32 beacon_crc; 459 460 bool status_acked; 461 bool status_received; 462 __le16 status_fc; 463 464 enum { 465 IEEE80211_MFP_DISABLED, 466 IEEE80211_MFP_OPTIONAL, 467 IEEE80211_MFP_REQUIRED 468 } mfp; /* management frame protection */ 469 470 /* 471 * Bitmask of enabled u-apsd queues, 472 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 473 * to take effect. 474 */ 475 unsigned int uapsd_queues; 476 477 /* 478 * Maximum number of buffered frames AP can deliver during a 479 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 480 * Needs a new association to take effect. 481 */ 482 unsigned int uapsd_max_sp_len; 483 484 int wmm_last_param_set; 485 486 u8 use_4addr; 487 488 s16 p2p_noa_index; 489 490 /* Signal strength from the last Beacon frame in the current BSS. */ 491 int last_beacon_signal; 492 493 /* 494 * Weighted average of the signal strength from Beacon frames in the 495 * current BSS. This is in units of 1/16 of the signal unit to maintain 496 * accuracy and to speed up calculations, i.e., the value need to be 497 * divided by 16 to get the actual value. 498 */ 499 int ave_beacon_signal; 500 501 /* 502 * Number of Beacon frames used in ave_beacon_signal. This can be used 503 * to avoid generating less reliable cqm events that would be based 504 * only on couple of received frames. 505 */ 506 unsigned int count_beacon_signal; 507 508 /* 509 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 510 * that triggered a cqm event. 0 indicates that no event has been 511 * generated for the current association. 512 */ 513 int last_cqm_event_signal; 514 515 /* 516 * State variables for keeping track of RSSI of the AP currently 517 * connected to and informing driver when RSSI has gone 518 * below/above a certain threshold. 519 */ 520 int rssi_min_thold, rssi_max_thold; 521 int last_ave_beacon_signal; 522 523 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 524 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 525 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 526 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 527 528 /* TDLS support */ 529 u8 tdls_peer[ETH_ALEN] __aligned(2); 530 struct delayed_work tdls_peer_del_work; 531 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 532 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 533 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 534 bool tdls_chan_switch_prohibited; 535 536 /* WMM-AC TSPEC support */ 537 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 538 /* Use a separate work struct so that we can do something here 539 * while the sdata->work is flushing the queues, for example. 540 * otherwise, in scenarios where we hardly get any traffic out 541 * on the BE queue, but there's a lot of VO traffic, we might 542 * get stuck in a downgraded situation and flush takes forever. 543 */ 544 struct delayed_work tx_tspec_wk; 545 }; 546 547 struct ieee80211_if_ibss { 548 struct timer_list timer; 549 struct work_struct csa_connection_drop_work; 550 551 unsigned long last_scan_completed; 552 553 u32 basic_rates; 554 555 bool fixed_bssid; 556 bool fixed_channel; 557 bool privacy; 558 559 bool control_port; 560 bool userspace_handles_dfs; 561 562 u8 bssid[ETH_ALEN] __aligned(2); 563 u8 ssid[IEEE80211_MAX_SSID_LEN]; 564 u8 ssid_len, ie_len; 565 u8 *ie; 566 struct cfg80211_chan_def chandef; 567 568 unsigned long ibss_join_req; 569 /* probe response/beacon for IBSS */ 570 struct beacon_data __rcu *presp; 571 572 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 573 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 574 575 spinlock_t incomplete_lock; 576 struct list_head incomplete_stations; 577 578 enum { 579 IEEE80211_IBSS_MLME_SEARCH, 580 IEEE80211_IBSS_MLME_JOINED, 581 } state; 582 }; 583 584 /** 585 * struct ieee80211_if_ocb - OCB mode state 586 * 587 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 588 * @wrkq_flags: OCB deferred task action 589 * @incomplete_lock: delayed STA insertion lock 590 * @incomplete_stations: list of STAs waiting for delayed insertion 591 * @joined: indication if the interface is connected to an OCB network 592 */ 593 struct ieee80211_if_ocb { 594 struct timer_list housekeeping_timer; 595 unsigned long wrkq_flags; 596 597 spinlock_t incomplete_lock; 598 struct list_head incomplete_stations; 599 600 bool joined; 601 }; 602 603 /** 604 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 605 * 606 * these declarations define the interface, which enables 607 * vendor-specific mesh synchronization 608 * 609 */ 610 struct ieee802_11_elems; 611 struct ieee80211_mesh_sync_ops { 612 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 613 u16 stype, 614 struct ieee80211_mgmt *mgmt, 615 struct ieee802_11_elems *elems, 616 struct ieee80211_rx_status *rx_status); 617 618 /* should be called with beacon_data under RCU read lock */ 619 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 620 struct beacon_data *beacon); 621 /* add other framework functions here */ 622 }; 623 624 struct mesh_csa_settings { 625 struct rcu_head rcu_head; 626 struct cfg80211_csa_settings settings; 627 }; 628 629 struct ieee80211_if_mesh { 630 struct timer_list housekeeping_timer; 631 struct timer_list mesh_path_timer; 632 struct timer_list mesh_path_root_timer; 633 634 unsigned long wrkq_flags; 635 unsigned long mbss_changed; 636 637 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 638 size_t mesh_id_len; 639 /* Active Path Selection Protocol Identifier */ 640 u8 mesh_pp_id; 641 /* Active Path Selection Metric Identifier */ 642 u8 mesh_pm_id; 643 /* Congestion Control Mode Identifier */ 644 u8 mesh_cc_id; 645 /* Synchronization Protocol Identifier */ 646 u8 mesh_sp_id; 647 /* Authentication Protocol Identifier */ 648 u8 mesh_auth_id; 649 /* Local mesh Sequence Number */ 650 u32 sn; 651 /* Last used PREQ ID */ 652 u32 preq_id; 653 atomic_t mpaths; 654 /* Timestamp of last SN update */ 655 unsigned long last_sn_update; 656 /* Time when it's ok to send next PERR */ 657 unsigned long next_perr; 658 /* Timestamp of last PREQ sent */ 659 unsigned long last_preq; 660 struct mesh_rmc *rmc; 661 spinlock_t mesh_preq_queue_lock; 662 struct mesh_preq_queue preq_queue; 663 int preq_queue_len; 664 struct mesh_stats mshstats; 665 struct mesh_config mshcfg; 666 atomic_t estab_plinks; 667 u32 mesh_seqnum; 668 bool accepting_plinks; 669 int num_gates; 670 struct beacon_data __rcu *beacon; 671 const u8 *ie; 672 u8 ie_len; 673 enum { 674 IEEE80211_MESH_SEC_NONE = 0x0, 675 IEEE80211_MESH_SEC_AUTHED = 0x1, 676 IEEE80211_MESH_SEC_SECURED = 0x2, 677 } security; 678 bool user_mpm; 679 /* Extensible Synchronization Framework */ 680 const struct ieee80211_mesh_sync_ops *sync_ops; 681 s64 sync_offset_clockdrift_max; 682 spinlock_t sync_offset_lock; 683 bool adjusting_tbtt; 684 /* mesh power save */ 685 enum nl80211_mesh_power_mode nonpeer_pm; 686 int ps_peers_light_sleep; 687 int ps_peers_deep_sleep; 688 struct ps_data ps; 689 /* Channel Switching Support */ 690 struct mesh_csa_settings __rcu *csa; 691 enum { 692 IEEE80211_MESH_CSA_ROLE_NONE, 693 IEEE80211_MESH_CSA_ROLE_INIT, 694 IEEE80211_MESH_CSA_ROLE_REPEATER, 695 } csa_role; 696 u8 chsw_ttl; 697 u16 pre_value; 698 699 /* offset from skb->data while building IE */ 700 int meshconf_offset; 701 }; 702 703 #ifdef CONFIG_MAC80211_MESH 704 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 705 do { (msh)->mshstats.name++; } while (0) 706 #else 707 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 708 do { } while (0) 709 #endif 710 711 /** 712 * enum ieee80211_sub_if_data_flags - virtual interface flags 713 * 714 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 715 * @IEEE80211_SDATA_PROMISC: interface is promisc 716 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 717 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 718 * associated stations and deliver multicast frames both 719 * back to wireless media and to the local net stack. 720 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 721 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 722 */ 723 enum ieee80211_sub_if_data_flags { 724 IEEE80211_SDATA_ALLMULTI = BIT(0), 725 IEEE80211_SDATA_PROMISC = BIT(1), 726 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 727 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 728 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 729 IEEE80211_SDATA_IN_DRIVER = BIT(5), 730 }; 731 732 /** 733 * enum ieee80211_sdata_state_bits - virtual interface state bits 734 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 735 * mirrors netif_running() but is separate for interface type 736 * change handling while the interface is up 737 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 738 * mode, so queues are stopped 739 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 740 * to offchannel, reset when offchannel returns 741 */ 742 enum ieee80211_sdata_state_bits { 743 SDATA_STATE_RUNNING, 744 SDATA_STATE_OFFCHANNEL, 745 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 746 }; 747 748 /** 749 * enum ieee80211_chanctx_mode - channel context configuration mode 750 * 751 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 752 * multiple interfaces 753 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 754 * only by a single interface. This can be used for example for 755 * non-fixed channel IBSS. 756 */ 757 enum ieee80211_chanctx_mode { 758 IEEE80211_CHANCTX_SHARED, 759 IEEE80211_CHANCTX_EXCLUSIVE 760 }; 761 762 /** 763 * enum ieee80211_chanctx_replace_state - channel context replacement state 764 * 765 * This is used for channel context in-place reservations that require channel 766 * context switch/swap. 767 * 768 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 769 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 770 * by a (not yet registered) channel context pointed by %replace_ctx. 771 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 772 * replaces an existing channel context pointed to by %replace_ctx. 773 */ 774 enum ieee80211_chanctx_replace_state { 775 IEEE80211_CHANCTX_REPLACE_NONE, 776 IEEE80211_CHANCTX_WILL_BE_REPLACED, 777 IEEE80211_CHANCTX_REPLACES_OTHER, 778 }; 779 780 struct ieee80211_chanctx { 781 struct list_head list; 782 struct rcu_head rcu_head; 783 784 struct list_head assigned_vifs; 785 struct list_head reserved_vifs; 786 787 enum ieee80211_chanctx_replace_state replace_state; 788 struct ieee80211_chanctx *replace_ctx; 789 790 enum ieee80211_chanctx_mode mode; 791 bool driver_present; 792 793 struct ieee80211_chanctx_conf conf; 794 }; 795 796 struct mac80211_qos_map { 797 struct cfg80211_qos_map qos_map; 798 struct rcu_head rcu_head; 799 }; 800 801 struct ieee80211_sub_if_data { 802 struct list_head list; 803 804 struct wireless_dev wdev; 805 806 /* keys */ 807 struct list_head key_list; 808 809 /* count for keys needing tailroom space allocation */ 810 int crypto_tx_tailroom_needed_cnt; 811 int crypto_tx_tailroom_pending_dec; 812 struct delayed_work dec_tailroom_needed_wk; 813 814 struct net_device *dev; 815 struct ieee80211_local *local; 816 817 unsigned int flags; 818 819 unsigned long state; 820 821 int drop_unencrypted; 822 823 char name[IFNAMSIZ]; 824 825 /* Fragment table for host-based reassembly */ 826 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 827 unsigned int fragment_next; 828 829 /* TID bitmap for NoAck policy */ 830 u16 noack_map; 831 832 /* bit field of ACM bits (BIT(802.1D tag)) */ 833 u8 wmm_acm; 834 835 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 836 struct ieee80211_key __rcu *default_unicast_key; 837 struct ieee80211_key __rcu *default_multicast_key; 838 struct ieee80211_key __rcu *default_mgmt_key; 839 840 u16 sequence_number; 841 __be16 control_port_protocol; 842 bool control_port_no_encrypt; 843 int encrypt_headroom; 844 845 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 846 struct mac80211_qos_map __rcu *qos_map; 847 848 struct work_struct csa_finalize_work; 849 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 850 struct cfg80211_chan_def csa_chandef; 851 852 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 853 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 854 855 /* context reservation -- protected with chanctx_mtx */ 856 struct ieee80211_chanctx *reserved_chanctx; 857 struct cfg80211_chan_def reserved_chandef; 858 bool reserved_radar_required; 859 bool reserved_ready; 860 861 /* used to reconfigure hardware SM PS */ 862 struct work_struct recalc_smps; 863 864 struct work_struct work; 865 struct sk_buff_head skb_queue; 866 867 u8 needed_rx_chains; 868 enum ieee80211_smps_mode smps_mode; 869 870 int user_power_level; /* in dBm */ 871 int ap_power_level; /* in dBm */ 872 873 bool radar_required; 874 struct delayed_work dfs_cac_timer_work; 875 876 /* 877 * AP this belongs to: self in AP mode and 878 * corresponding AP in VLAN mode, NULL for 879 * all others (might be needed later in IBSS) 880 */ 881 struct ieee80211_if_ap *bss; 882 883 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 884 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 885 886 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 887 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 888 889 union { 890 struct ieee80211_if_ap ap; 891 struct ieee80211_if_wds wds; 892 struct ieee80211_if_vlan vlan; 893 struct ieee80211_if_managed mgd; 894 struct ieee80211_if_ibss ibss; 895 struct ieee80211_if_mesh mesh; 896 struct ieee80211_if_ocb ocb; 897 u32 mntr_flags; 898 } u; 899 900 #ifdef CONFIG_MAC80211_DEBUGFS 901 struct { 902 struct dentry *subdir_stations; 903 struct dentry *default_unicast_key; 904 struct dentry *default_multicast_key; 905 struct dentry *default_mgmt_key; 906 } debugfs; 907 #endif 908 909 /* must be last, dynamically sized area in this! */ 910 struct ieee80211_vif vif; 911 }; 912 913 static inline 914 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 915 { 916 return container_of(p, struct ieee80211_sub_if_data, vif); 917 } 918 919 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 920 __acquires(&sdata->wdev.mtx) 921 { 922 mutex_lock(&sdata->wdev.mtx); 923 __acquire(&sdata->wdev.mtx); 924 } 925 926 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 927 __releases(&sdata->wdev.mtx) 928 { 929 mutex_unlock(&sdata->wdev.mtx); 930 __release(&sdata->wdev.mtx); 931 } 932 933 #define sdata_dereference(p, sdata) \ 934 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 935 936 static inline void 937 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 938 { 939 lockdep_assert_held(&sdata->wdev.mtx); 940 } 941 942 static inline enum ieee80211_band 943 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 944 { 945 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 946 struct ieee80211_chanctx_conf *chanctx_conf; 947 948 rcu_read_lock(); 949 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 950 if (!WARN_ON(!chanctx_conf)) 951 band = chanctx_conf->def.chan->band; 952 rcu_read_unlock(); 953 954 return band; 955 } 956 957 static inline int 958 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 959 { 960 switch (chandef->width) { 961 case NL80211_CHAN_WIDTH_5: 962 return 2; 963 case NL80211_CHAN_WIDTH_10: 964 return 1; 965 default: 966 return 0; 967 } 968 } 969 970 static inline int 971 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 972 { 973 struct ieee80211_chanctx_conf *chanctx_conf; 974 int shift = 0; 975 976 rcu_read_lock(); 977 chanctx_conf = rcu_dereference(vif->chanctx_conf); 978 if (chanctx_conf) 979 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 980 rcu_read_unlock(); 981 982 return shift; 983 } 984 985 struct ieee80211_rx_agg { 986 u8 addr[ETH_ALEN]; 987 u16 tid; 988 }; 989 990 enum sdata_queue_type { 991 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 992 IEEE80211_SDATA_QUEUE_AGG_START = 1, 993 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 994 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 995 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 996 IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5, 997 }; 998 999 enum { 1000 IEEE80211_RX_MSG = 1, 1001 IEEE80211_TX_STATUS_MSG = 2, 1002 }; 1003 1004 enum queue_stop_reason { 1005 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1006 IEEE80211_QUEUE_STOP_REASON_PS, 1007 IEEE80211_QUEUE_STOP_REASON_CSA, 1008 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1009 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1010 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1011 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1012 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1013 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1014 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1015 1016 IEEE80211_QUEUE_STOP_REASONS, 1017 }; 1018 1019 #ifdef CONFIG_MAC80211_LEDS 1020 struct tpt_led_trigger { 1021 struct led_trigger trig; 1022 char name[32]; 1023 const struct ieee80211_tpt_blink *blink_table; 1024 unsigned int blink_table_len; 1025 struct timer_list timer; 1026 unsigned long prev_traffic; 1027 unsigned long tx_bytes, rx_bytes; 1028 unsigned int active, want; 1029 bool running; 1030 }; 1031 #endif 1032 1033 /* 1034 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 1035 * 1036 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 1037 * certain latency range (in Milliseconds). Each station that uses these 1038 * ranges will have bins to count the amount of frames received in that range. 1039 * The user can configure the ranges via debugfs. 1040 * If ranges is NULL then Tx latency statistics bins are disabled for all 1041 * stations. 1042 * 1043 * @n_ranges: number of ranges that are taken in account 1044 * @ranges: the ranges that the user requested or NULL if disabled. 1045 */ 1046 struct ieee80211_tx_latency_bin_ranges { 1047 int n_ranges; 1048 u32 ranges[]; 1049 }; 1050 1051 /** 1052 * mac80211 scan flags - currently active scan mode 1053 * 1054 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1055 * well be on the operating channel 1056 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1057 * determine if we are on the operating channel or not 1058 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1059 * channel. This should not interrupt normal traffic. 1060 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1061 * that the scan completed. 1062 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1063 * a scan complete for an aborted scan. 1064 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1065 * cancelled. 1066 */ 1067 enum { 1068 SCAN_SW_SCANNING, 1069 SCAN_HW_SCANNING, 1070 SCAN_ONCHANNEL_SCANNING, 1071 SCAN_COMPLETED, 1072 SCAN_ABORTED, 1073 SCAN_HW_CANCELLED, 1074 }; 1075 1076 /** 1077 * enum mac80211_scan_state - scan state machine states 1078 * 1079 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1080 * determines if we should keep on scanning or switch back to the 1081 * operating channel 1082 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1083 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1084 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1085 * send out data 1086 * @SCAN_RESUME: Resume the scan and scan the next channel 1087 * @SCAN_ABORT: Abort the scan and go back to operating channel 1088 */ 1089 enum mac80211_scan_state { 1090 SCAN_DECISION, 1091 SCAN_SET_CHANNEL, 1092 SCAN_SEND_PROBE, 1093 SCAN_SUSPEND, 1094 SCAN_RESUME, 1095 SCAN_ABORT, 1096 }; 1097 1098 struct ieee80211_local { 1099 /* embed the driver visible part. 1100 * don't cast (use the static inlines below), but we keep 1101 * it first anyway so they become a no-op */ 1102 struct ieee80211_hw hw; 1103 1104 const struct ieee80211_ops *ops; 1105 1106 /* 1107 * private workqueue to mac80211. mac80211 makes this accessible 1108 * via ieee80211_queue_work() 1109 */ 1110 struct workqueue_struct *workqueue; 1111 1112 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1113 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1114 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1115 spinlock_t queue_stop_reason_lock; 1116 1117 int open_count; 1118 int monitors, cooked_mntrs; 1119 /* number of interfaces with corresponding FIF_ flags */ 1120 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1121 fif_probe_req; 1122 int probe_req_reg; 1123 unsigned int filter_flags; /* FIF_* */ 1124 1125 bool wiphy_ciphers_allocated; 1126 1127 bool use_chanctx; 1128 1129 /* protects the aggregated multicast list and filter calls */ 1130 spinlock_t filter_lock; 1131 1132 /* used for uploading changed mc list */ 1133 struct work_struct reconfig_filter; 1134 1135 /* aggregated multicast list */ 1136 struct netdev_hw_addr_list mc_list; 1137 1138 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1139 1140 /* 1141 * suspended is true if we finished all the suspend _and_ we have 1142 * not yet come up from resume. This is to be used by mac80211 1143 * to ensure driver sanity during suspend and mac80211's own 1144 * sanity. It can eventually be used for WoW as well. 1145 */ 1146 bool suspended; 1147 1148 /* 1149 * Resuming is true while suspended, but when we're reprogramming the 1150 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1151 * again even though some other parts of the stack are still suspended 1152 * and we still drop received frames to avoid waking the stack. 1153 */ 1154 bool resuming; 1155 1156 /* 1157 * quiescing is true during the suspend process _only_ to 1158 * ease timer cancelling etc. 1159 */ 1160 bool quiescing; 1161 1162 /* device is started */ 1163 bool started; 1164 1165 /* device is during a HW reconfig */ 1166 bool in_reconfig; 1167 1168 /* wowlan is enabled -- don't reconfig on resume */ 1169 bool wowlan; 1170 1171 struct work_struct radar_detected_work; 1172 1173 /* number of RX chains the hardware has */ 1174 u8 rx_chains; 1175 1176 int tx_headroom; /* required headroom for hardware/radiotap */ 1177 1178 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1179 * added to skb_queue will be processed, but frames in 1180 * skb_queue_unreliable may be dropped if the total length of these 1181 * queues increases over the limit. */ 1182 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1183 struct tasklet_struct tasklet; 1184 struct sk_buff_head skb_queue; 1185 struct sk_buff_head skb_queue_unreliable; 1186 1187 spinlock_t rx_path_lock; 1188 1189 /* Station data */ 1190 /* 1191 * The mutex only protects the list, hash table and 1192 * counter, reads are done with RCU. 1193 */ 1194 struct mutex sta_mtx; 1195 spinlock_t tim_lock; 1196 unsigned long num_sta; 1197 struct list_head sta_list; 1198 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1199 struct timer_list sta_cleanup; 1200 int sta_generation; 1201 1202 /* 1203 * Tx latency statistics parameters for all stations. 1204 * Can enable via debugfs (NULL when disabled). 1205 */ 1206 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1207 1208 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1209 struct tasklet_struct tx_pending_tasklet; 1210 1211 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1212 1213 /* number of interfaces with corresponding IFF_ flags */ 1214 atomic_t iff_allmultis, iff_promiscs; 1215 1216 struct rate_control_ref *rate_ctrl; 1217 1218 struct crypto_cipher *wep_tx_tfm; 1219 struct crypto_cipher *wep_rx_tfm; 1220 u32 wep_iv; 1221 1222 /* see iface.c */ 1223 struct list_head interfaces; 1224 struct mutex iflist_mtx; 1225 1226 /* 1227 * Key mutex, protects sdata's key_list and sta_info's 1228 * key pointers (write access, they're RCU.) 1229 */ 1230 struct mutex key_mtx; 1231 1232 /* mutex for scan and work locking */ 1233 struct mutex mtx; 1234 1235 /* Scanning and BSS list */ 1236 unsigned long scanning; 1237 struct cfg80211_ssid scan_ssid; 1238 struct cfg80211_scan_request *int_scan_req; 1239 struct cfg80211_scan_request __rcu *scan_req; 1240 struct ieee80211_scan_request *hw_scan_req; 1241 struct cfg80211_chan_def scan_chandef; 1242 enum ieee80211_band hw_scan_band; 1243 int scan_channel_idx; 1244 int scan_ies_len; 1245 int hw_scan_ies_bufsize; 1246 1247 struct work_struct sched_scan_stopped_work; 1248 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1249 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1250 u8 scan_addr[ETH_ALEN]; 1251 1252 unsigned long leave_oper_channel_time; 1253 enum mac80211_scan_state next_scan_state; 1254 struct delayed_work scan_work; 1255 struct ieee80211_sub_if_data __rcu *scan_sdata; 1256 /* For backward compatibility only -- do not use */ 1257 struct cfg80211_chan_def _oper_chandef; 1258 1259 /* Temporary remain-on-channel for off-channel operations */ 1260 struct ieee80211_channel *tmp_channel; 1261 1262 /* channel contexts */ 1263 struct list_head chanctx_list; 1264 struct mutex chanctx_mtx; 1265 1266 /* SNMP counters */ 1267 /* dot11CountersTable */ 1268 u32 dot11TransmittedFragmentCount; 1269 u32 dot11MulticastTransmittedFrameCount; 1270 u32 dot11FailedCount; 1271 u32 dot11RetryCount; 1272 u32 dot11MultipleRetryCount; 1273 u32 dot11FrameDuplicateCount; 1274 u32 dot11ReceivedFragmentCount; 1275 u32 dot11MulticastReceivedFrameCount; 1276 u32 dot11TransmittedFrameCount; 1277 1278 #ifdef CONFIG_MAC80211_LEDS 1279 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1280 struct tpt_led_trigger *tpt_led_trigger; 1281 char tx_led_name[32], rx_led_name[32], 1282 assoc_led_name[32], radio_led_name[32]; 1283 #endif 1284 1285 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1286 /* TX/RX handler statistics */ 1287 unsigned int tx_handlers_drop; 1288 unsigned int tx_handlers_queued; 1289 unsigned int tx_handlers_drop_unencrypted; 1290 unsigned int tx_handlers_drop_fragment; 1291 unsigned int tx_handlers_drop_wep; 1292 unsigned int tx_handlers_drop_not_assoc; 1293 unsigned int tx_handlers_drop_unauth_port; 1294 unsigned int rx_handlers_drop; 1295 unsigned int rx_handlers_queued; 1296 unsigned int rx_handlers_drop_nullfunc; 1297 unsigned int rx_handlers_drop_defrag; 1298 unsigned int rx_handlers_drop_short; 1299 unsigned int tx_expand_skb_head; 1300 unsigned int tx_expand_skb_head_cloned; 1301 unsigned int rx_expand_skb_head; 1302 unsigned int rx_expand_skb_head2; 1303 unsigned int rx_handlers_fragments; 1304 unsigned int tx_status_drop; 1305 #define I802_DEBUG_INC(c) (c)++ 1306 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1307 #define I802_DEBUG_INC(c) do { } while (0) 1308 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1309 1310 1311 int total_ps_buffered; /* total number of all buffered unicast and 1312 * multicast packets for power saving stations 1313 */ 1314 1315 bool pspolling; 1316 bool offchannel_ps_enabled; 1317 /* 1318 * PS can only be enabled when we have exactly one managed 1319 * interface (and monitors) in PS, this then points there. 1320 */ 1321 struct ieee80211_sub_if_data *ps_sdata; 1322 struct work_struct dynamic_ps_enable_work; 1323 struct work_struct dynamic_ps_disable_work; 1324 struct timer_list dynamic_ps_timer; 1325 struct notifier_block network_latency_notifier; 1326 struct notifier_block ifa_notifier; 1327 struct notifier_block ifa6_notifier; 1328 1329 /* 1330 * The dynamic ps timeout configured from user space via WEXT - 1331 * this will override whatever chosen by mac80211 internally. 1332 */ 1333 int dynamic_ps_forced_timeout; 1334 1335 int user_power_level; /* in dBm, for all interfaces */ 1336 1337 enum ieee80211_smps_mode smps_mode; 1338 1339 struct work_struct restart_work; 1340 1341 #ifdef CONFIG_MAC80211_DEBUGFS 1342 struct local_debugfsdentries { 1343 struct dentry *rcdir; 1344 struct dentry *keys; 1345 } debugfs; 1346 #endif 1347 1348 /* 1349 * Remain-on-channel support 1350 */ 1351 struct list_head roc_list; 1352 struct work_struct hw_roc_start, hw_roc_done; 1353 unsigned long hw_roc_start_time; 1354 u64 roc_cookie_counter; 1355 1356 struct idr ack_status_frames; 1357 spinlock_t ack_status_lock; 1358 1359 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1360 1361 struct napi_struct *napi; 1362 1363 /* virtual monitor interface */ 1364 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1365 struct cfg80211_chan_def monitor_chandef; 1366 1367 /* extended capabilities provided by mac80211 */ 1368 u8 ext_capa[8]; 1369 }; 1370 1371 static inline struct ieee80211_sub_if_data * 1372 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1373 { 1374 return netdev_priv(dev); 1375 } 1376 1377 static inline struct ieee80211_sub_if_data * 1378 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1379 { 1380 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1381 } 1382 1383 /* this struct represents 802.11n's RA/TID combination */ 1384 struct ieee80211_ra_tid { 1385 u8 ra[ETH_ALEN]; 1386 u16 tid; 1387 }; 1388 1389 /* this struct holds the value parsing from channel switch IE */ 1390 struct ieee80211_csa_ie { 1391 struct cfg80211_chan_def chandef; 1392 u8 mode; 1393 u8 count; 1394 u8 ttl; 1395 u16 pre_value; 1396 }; 1397 1398 /* Parsed Information Elements */ 1399 struct ieee802_11_elems { 1400 const u8 *ie_start; 1401 size_t total_len; 1402 1403 /* pointers to IEs */ 1404 const struct ieee80211_tdls_lnkie *lnk_id; 1405 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1406 const u8 *ext_capab; 1407 const u8 *ssid; 1408 const u8 *supp_rates; 1409 const u8 *ds_params; 1410 const struct ieee80211_tim_ie *tim; 1411 const u8 *challenge; 1412 const u8 *rsn; 1413 const u8 *erp_info; 1414 const u8 *ext_supp_rates; 1415 const u8 *wmm_info; 1416 const u8 *wmm_param; 1417 const struct ieee80211_ht_cap *ht_cap_elem; 1418 const struct ieee80211_ht_operation *ht_operation; 1419 const struct ieee80211_vht_cap *vht_cap_elem; 1420 const struct ieee80211_vht_operation *vht_operation; 1421 const struct ieee80211_meshconf_ie *mesh_config; 1422 const u8 *mesh_id; 1423 const u8 *peering; 1424 const __le16 *awake_window; 1425 const u8 *preq; 1426 const u8 *prep; 1427 const u8 *perr; 1428 const struct ieee80211_rann_ie *rann; 1429 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1430 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1431 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1432 const u8 *country_elem; 1433 const u8 *pwr_constr_elem; 1434 const u8 *cisco_dtpc_elem; 1435 const struct ieee80211_timeout_interval_ie *timeout_int; 1436 const u8 *opmode_notif; 1437 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1438 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1439 1440 /* length of them, respectively */ 1441 u8 ext_capab_len; 1442 u8 ssid_len; 1443 u8 supp_rates_len; 1444 u8 tim_len; 1445 u8 challenge_len; 1446 u8 rsn_len; 1447 u8 ext_supp_rates_len; 1448 u8 wmm_info_len; 1449 u8 wmm_param_len; 1450 u8 mesh_id_len; 1451 u8 peering_len; 1452 u8 preq_len; 1453 u8 prep_len; 1454 u8 perr_len; 1455 u8 country_elem_len; 1456 1457 /* whether a parse error occurred while retrieving these elements */ 1458 bool parse_error; 1459 }; 1460 1461 static inline struct ieee80211_local *hw_to_local( 1462 struct ieee80211_hw *hw) 1463 { 1464 return container_of(hw, struct ieee80211_local, hw); 1465 } 1466 1467 1468 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1469 { 1470 return ether_addr_equal(raddr, addr) || 1471 is_broadcast_ether_addr(raddr); 1472 } 1473 1474 static inline bool 1475 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1476 { 1477 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1478 status->flag & RX_FLAG_MACTIME_END); 1479 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1480 } 1481 1482 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1483 struct ieee80211_rx_status *status, 1484 unsigned int mpdu_len, 1485 unsigned int mpdu_offset); 1486 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1487 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1488 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1489 u32 changed); 1490 void ieee80211_configure_filter(struct ieee80211_local *local); 1491 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1492 1493 /* STA code */ 1494 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1495 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1496 struct cfg80211_auth_request *req); 1497 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1498 struct cfg80211_assoc_request *req); 1499 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1500 struct cfg80211_deauth_request *req); 1501 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1502 struct cfg80211_disassoc_request *req); 1503 void ieee80211_send_pspoll(struct ieee80211_local *local, 1504 struct ieee80211_sub_if_data *sdata); 1505 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1506 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1507 int ieee80211_max_network_latency(struct notifier_block *nb, 1508 unsigned long data, void *dummy); 1509 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1510 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1511 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1512 struct sk_buff *skb); 1513 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1514 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1515 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1516 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1517 __le16 fc, bool acked); 1518 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1519 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1520 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1521 1522 /* IBSS code */ 1523 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1524 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1525 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1526 const u8 *bssid, const u8 *addr, u32 supp_rates); 1527 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1528 struct cfg80211_ibss_params *params); 1529 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1530 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1531 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1532 struct sk_buff *skb); 1533 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1534 struct cfg80211_csa_settings *csa_settings); 1535 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1536 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1537 1538 /* OCB code */ 1539 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1541 const u8 *bssid, const u8 *addr, u32 supp_rates); 1542 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1543 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1544 struct ocb_setup *setup); 1545 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1546 1547 /* mesh code */ 1548 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1549 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1550 struct sk_buff *skb); 1551 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1552 struct cfg80211_csa_settings *csa_settings); 1553 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1554 1555 /* scan/BSS handling */ 1556 void ieee80211_scan_work(struct work_struct *work); 1557 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1558 const u8 *ssid, u8 ssid_len, 1559 struct ieee80211_channel *chan, 1560 enum nl80211_bss_scan_width scan_width); 1561 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1562 struct cfg80211_scan_request *req); 1563 void ieee80211_scan_cancel(struct ieee80211_local *local); 1564 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1565 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1566 1567 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1568 struct ieee80211_bss * 1569 ieee80211_bss_info_update(struct ieee80211_local *local, 1570 struct ieee80211_rx_status *rx_status, 1571 struct ieee80211_mgmt *mgmt, 1572 size_t len, 1573 struct ieee802_11_elems *elems, 1574 struct ieee80211_channel *channel); 1575 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1576 struct ieee80211_bss *bss); 1577 1578 /* scheduled scan handling */ 1579 int 1580 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1581 struct cfg80211_sched_scan_request *req); 1582 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1583 struct cfg80211_sched_scan_request *req); 1584 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1585 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1586 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1587 1588 /* off-channel helpers */ 1589 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1590 void ieee80211_offchannel_return(struct ieee80211_local *local); 1591 void ieee80211_roc_setup(struct ieee80211_local *local); 1592 void ieee80211_start_next_roc(struct ieee80211_local *local); 1593 void ieee80211_roc_purge(struct ieee80211_local *local, 1594 struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1596 void ieee80211_sw_roc_work(struct work_struct *work); 1597 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1598 1599 /* channel switch handling */ 1600 void ieee80211_csa_finalize_work(struct work_struct *work); 1601 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1602 struct cfg80211_csa_settings *params); 1603 1604 /* interface handling */ 1605 int ieee80211_iface_init(void); 1606 void ieee80211_iface_exit(void); 1607 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1608 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1609 struct vif_params *params); 1610 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1611 enum nl80211_iftype type); 1612 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1613 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1614 u32 ieee80211_idle_off(struct ieee80211_local *local); 1615 void ieee80211_recalc_idle(struct ieee80211_local *local); 1616 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1617 const int offset); 1618 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1619 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1620 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1621 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1622 1623 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1624 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1625 bool update_bss); 1626 1627 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1628 { 1629 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1630 } 1631 1632 /* tx handling */ 1633 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1634 void ieee80211_tx_pending(unsigned long data); 1635 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1636 struct net_device *dev); 1637 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1638 struct net_device *dev); 1639 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1640 struct net_device *dev, 1641 u32 info_flags); 1642 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1643 struct sk_buff_head *skbs); 1644 struct sk_buff * 1645 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1646 struct sk_buff *skb, u32 info_flags); 1647 1648 /* HT */ 1649 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1650 struct ieee80211_sta_ht_cap *ht_cap); 1651 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1652 struct ieee80211_supported_band *sband, 1653 const struct ieee80211_ht_cap *ht_cap_ie, 1654 struct sta_info *sta); 1655 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1656 const u8 *da, u16 tid, 1657 u16 initiator, u16 reason_code); 1658 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1659 enum ieee80211_smps_mode smps, const u8 *da, 1660 const u8 *bssid); 1661 void ieee80211_request_smps_ap_work(struct work_struct *work); 1662 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1663 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1664 enum ieee80211_smps_mode smps_mode_new); 1665 1666 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1667 u16 initiator, u16 reason, bool stop); 1668 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1669 u16 initiator, u16 reason, bool stop); 1670 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1671 u8 dialog_token, u16 timeout, 1672 u16 start_seq_num, u16 ba_policy, u16 tid, 1673 u16 buf_size, bool tx, bool auto_seq); 1674 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1675 enum ieee80211_agg_stop_reason reason); 1676 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1677 struct sta_info *sta, 1678 struct ieee80211_mgmt *mgmt, size_t len); 1679 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1680 struct sta_info *sta, 1681 struct ieee80211_mgmt *mgmt, 1682 size_t len); 1683 void ieee80211_process_addba_request(struct ieee80211_local *local, 1684 struct sta_info *sta, 1685 struct ieee80211_mgmt *mgmt, 1686 size_t len); 1687 1688 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1689 enum ieee80211_agg_stop_reason reason); 1690 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1691 enum ieee80211_agg_stop_reason reason); 1692 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1693 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1694 void ieee80211_ba_session_work(struct work_struct *work); 1695 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1696 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1697 1698 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1699 1700 /* VHT */ 1701 void 1702 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1703 struct ieee80211_supported_band *sband, 1704 const struct ieee80211_vht_cap *vht_cap_ie, 1705 struct sta_info *sta); 1706 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1708 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1709 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1710 struct sta_info *sta, u8 opmode, 1711 enum ieee80211_band band, bool nss_only); 1712 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1713 struct sta_info *sta, u8 opmode, 1714 enum ieee80211_band band, bool nss_only); 1715 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1716 struct ieee80211_sta_vht_cap *vht_cap); 1717 1718 /* Spectrum management */ 1719 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1720 struct ieee80211_mgmt *mgmt, 1721 size_t len); 1722 /** 1723 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1724 * @sdata: the sdata of the interface which has received the frame 1725 * @elems: parsed 802.11 elements received with the frame 1726 * @current_band: indicates the current band 1727 * @sta_flags: contains information about own capabilities and restrictions 1728 * to decide which channel switch announcements can be accepted. Only the 1729 * following subset of &enum ieee80211_sta_flags are evaluated: 1730 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1731 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1732 * %IEEE80211_STA_DISABLE_160MHZ. 1733 * @bssid: the currently connected bssid (for reporting) 1734 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1735 All of them will be filled with if success only. 1736 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1737 */ 1738 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1739 struct ieee802_11_elems *elems, 1740 enum ieee80211_band current_band, 1741 u32 sta_flags, u8 *bssid, 1742 struct ieee80211_csa_ie *csa_ie); 1743 1744 /* Suspend/resume and hw reconfiguration */ 1745 int ieee80211_reconfig(struct ieee80211_local *local); 1746 void ieee80211_stop_device(struct ieee80211_local *local); 1747 1748 int __ieee80211_suspend(struct ieee80211_hw *hw, 1749 struct cfg80211_wowlan *wowlan); 1750 1751 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1752 { 1753 struct ieee80211_local *local = hw_to_local(hw); 1754 1755 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1756 !test_bit(SCAN_COMPLETED, &local->scanning), 1757 "%s: resume with hardware scan still in progress\n", 1758 wiphy_name(hw->wiphy)); 1759 1760 return ieee80211_reconfig(hw_to_local(hw)); 1761 } 1762 1763 /* utility functions/constants */ 1764 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1765 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1766 enum nl80211_iftype type); 1767 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1768 int rate, int erp, int short_preamble, 1769 int shift); 1770 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1771 struct ieee80211_hdr *hdr, const u8 *tsc, 1772 gfp_t gfp); 1773 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1774 bool bss_notify); 1775 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1776 1777 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1778 struct sk_buff *skb, int tid, 1779 enum ieee80211_band band); 1780 1781 static inline void 1782 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1783 struct sk_buff *skb, int tid, 1784 enum ieee80211_band band) 1785 { 1786 rcu_read_lock(); 1787 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1788 rcu_read_unlock(); 1789 } 1790 1791 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1792 struct sk_buff *skb, int tid) 1793 { 1794 struct ieee80211_chanctx_conf *chanctx_conf; 1795 1796 rcu_read_lock(); 1797 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1798 if (WARN_ON(!chanctx_conf)) { 1799 rcu_read_unlock(); 1800 kfree_skb(skb); 1801 return; 1802 } 1803 1804 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1805 chanctx_conf->def.chan->band); 1806 rcu_read_unlock(); 1807 } 1808 1809 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1810 struct sk_buff *skb) 1811 { 1812 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1813 ieee80211_tx_skb_tid(sdata, skb, 7); 1814 } 1815 1816 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1817 struct ieee802_11_elems *elems, 1818 u64 filter, u32 crc); 1819 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1820 bool action, 1821 struct ieee802_11_elems *elems) 1822 { 1823 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1824 } 1825 1826 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1827 { 1828 struct sk_buff *tail = skb_peek_tail(frames); 1829 struct ieee80211_rx_status *status; 1830 1831 if (!tail) 1832 return false; 1833 1834 status = IEEE80211_SKB_RXCB(tail); 1835 if (status->flag & RX_FLAG_AMSDU_MORE) 1836 return false; 1837 1838 return true; 1839 } 1840 1841 extern const int ieee802_1d_to_ac[8]; 1842 1843 static inline int ieee80211_ac_from_tid(int tid) 1844 { 1845 return ieee802_1d_to_ac[tid & 7]; 1846 } 1847 1848 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1849 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1850 void ieee80211_dynamic_ps_timer(unsigned long data); 1851 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1852 struct ieee80211_sub_if_data *sdata, 1853 int powersave); 1854 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1855 struct ieee80211_hdr *hdr); 1856 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1857 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1858 1859 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1860 unsigned long queues, 1861 enum queue_stop_reason reason, 1862 bool refcounted); 1863 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1864 struct ieee80211_sub_if_data *sdata, 1865 enum queue_stop_reason reason); 1866 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1867 struct ieee80211_sub_if_data *sdata, 1868 enum queue_stop_reason reason); 1869 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1870 unsigned long queues, 1871 enum queue_stop_reason reason, 1872 bool refcounted); 1873 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1874 enum queue_stop_reason reason, 1875 bool refcounted); 1876 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1877 enum queue_stop_reason reason, 1878 bool refcounted); 1879 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1880 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1881 struct sk_buff *skb); 1882 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1883 struct sk_buff_head *skbs); 1884 void ieee80211_flush_queues(struct ieee80211_local *local, 1885 struct ieee80211_sub_if_data *sdata, bool drop); 1886 void __ieee80211_flush_queues(struct ieee80211_local *local, 1887 struct ieee80211_sub_if_data *sdata, 1888 unsigned int queues, bool drop); 1889 1890 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1891 { 1892 /* 1893 * If quiescing is set, we are racing with __ieee80211_suspend. 1894 * __ieee80211_suspend flushes the workers after setting quiescing, 1895 * and we check quiescing / suspended before enqueing new workers. 1896 * We should abort the worker to avoid the races below. 1897 */ 1898 if (local->quiescing) 1899 return false; 1900 1901 /* 1902 * We might already be suspended if the following scenario occurs: 1903 * __ieee80211_suspend Control path 1904 * 1905 * if (local->quiescing) 1906 * return; 1907 * local->quiescing = true; 1908 * flush_workqueue(); 1909 * queue_work(...); 1910 * local->suspended = true; 1911 * local->quiescing = false; 1912 * worker starts running... 1913 */ 1914 if (local->suspended) 1915 return false; 1916 1917 return true; 1918 } 1919 1920 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1921 u16 transaction, u16 auth_alg, u16 status, 1922 const u8 *extra, size_t extra_len, const u8 *bssid, 1923 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1924 u32 tx_flags); 1925 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1926 const u8 *bssid, u16 stype, u16 reason, 1927 bool send_frame, u8 *frame_buf); 1928 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1929 size_t buffer_len, 1930 struct ieee80211_scan_ies *ie_desc, 1931 const u8 *ie, size_t ie_len, 1932 u8 bands_used, u32 *rate_masks, 1933 struct cfg80211_chan_def *chandef); 1934 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1935 const u8 *src, const u8 *dst, 1936 u32 ratemask, 1937 struct ieee80211_channel *chan, 1938 const u8 *ssid, size_t ssid_len, 1939 const u8 *ie, size_t ie_len, 1940 bool directed); 1941 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1942 const u8 *src, const u8 *dst, 1943 const u8 *ssid, size_t ssid_len, 1944 const u8 *ie, size_t ie_len, 1945 u32 ratemask, bool directed, u32 tx_flags, 1946 struct ieee80211_channel *channel, bool scan); 1947 1948 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1949 struct ieee802_11_elems *elems, 1950 enum ieee80211_band band, u32 *basic_rates); 1951 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1952 enum ieee80211_smps_mode smps_mode); 1953 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1954 enum ieee80211_smps_mode smps_mode); 1955 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1956 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1957 1958 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 1959 const u8 *ids, int n_ids, 1960 const u8 *after_ric, int n_after_ric, 1961 size_t offset); 1962 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1963 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1964 u16 cap); 1965 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1966 const struct cfg80211_chan_def *chandef, 1967 u16 prot_mode); 1968 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1969 u32 cap); 1970 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1971 const struct ieee80211_supported_band *sband, 1972 const u8 *srates, int srates_len, u32 *rates); 1973 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1974 struct sk_buff *skb, bool need_basic, 1975 enum ieee80211_band band); 1976 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1977 struct sk_buff *skb, bool need_basic, 1978 enum ieee80211_band band); 1979 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1980 1981 /* channel management */ 1982 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1983 const struct ieee80211_ht_operation *ht_oper, 1984 struct cfg80211_chan_def *chandef); 1985 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1986 1987 int __must_check 1988 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1989 const struct cfg80211_chan_def *chandef, 1990 enum ieee80211_chanctx_mode mode); 1991 int __must_check 1992 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1993 const struct cfg80211_chan_def *chandef, 1994 enum ieee80211_chanctx_mode mode, 1995 bool radar_required); 1996 int __must_check 1997 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 1998 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 1999 2000 int __must_check 2001 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2002 const struct cfg80211_chan_def *chandef, 2003 u32 *changed); 2004 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2005 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2006 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2007 bool clear); 2008 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2009 struct ieee80211_chanctx *ctx); 2010 2011 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2012 struct ieee80211_chanctx *chanctx); 2013 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2014 struct ieee80211_chanctx *ctx); 2015 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2016 2017 void ieee80211_dfs_cac_timer(unsigned long data); 2018 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2019 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2020 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2021 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2022 struct cfg80211_csa_settings *csa_settings); 2023 2024 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2025 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2026 const struct ieee80211_cipher_scheme * 2027 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2028 enum nl80211_iftype iftype); 2029 int ieee80211_cs_headroom(struct ieee80211_local *local, 2030 struct cfg80211_crypto_settings *crypto, 2031 enum nl80211_iftype iftype); 2032 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2033 struct ieee80211_sub_if_data *sdata); 2034 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2035 const struct cfg80211_chan_def *chandef, 2036 enum ieee80211_chanctx_mode chanmode, 2037 u8 radar_detect); 2038 int ieee80211_max_num_channels(struct ieee80211_local *local); 2039 2040 /* TDLS */ 2041 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2042 const u8 *peer, u8 action_code, u8 dialog_token, 2043 u16 status_code, u32 peer_capability, 2044 bool initiator, const u8 *extra_ies, 2045 size_t extra_ies_len); 2046 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2047 const u8 *peer, enum nl80211_tdls_operation oper); 2048 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2049 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2050 const u8 *addr, u8 oper_class, 2051 struct cfg80211_chan_def *chandef); 2052 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2053 struct net_device *dev, 2054 const u8 *addr); 2055 void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2056 struct sk_buff *skb); 2057 2058 extern const struct ethtool_ops ieee80211_ethtool_ops; 2059 2060 #ifdef CONFIG_MAC80211_NOINLINE 2061 #define debug_noinline noinline 2062 #else 2063 #define debug_noinline 2064 #endif 2065 2066 #endif /* IEEE80211_I_H */ 2067