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 * 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 <linux/rhashtable.h> 30 #include <net/ieee80211_radiotap.h> 31 #include <net/cfg80211.h> 32 #include <net/mac80211.h> 33 #include <net/fq.h> 34 #include "key.h" 35 #include "sta_info.h" 36 #include "debug.h" 37 38 extern const struct cfg80211_ops mac80211_config_ops; 39 40 struct ieee80211_local; 41 42 /* Maximum number of broadcast/multicast frames to buffer when some of the 43 * associated stations are using power saving. */ 44 #define AP_MAX_BC_BUFFER 128 45 46 /* Maximum number of frames buffered to all STAs, including multicast frames. 47 * Note: increasing this limit increases the potential memory requirement. Each 48 * frame can be up to about 2 kB long. */ 49 #define TOTAL_MAX_TX_BUFFER 512 50 51 /* Required encryption head and tailroom */ 52 #define IEEE80211_ENCRYPT_HEADROOM 8 53 #define IEEE80211_ENCRYPT_TAILROOM 18 54 55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 56 * reception of at least three fragmented frames. This limit can be increased 57 * by changing this define, at the cost of slower frame reassembly and 58 * increased memory use (about 2 kB of RAM per entry). */ 59 #define IEEE80211_FRAGMENT_MAX 4 60 61 /* power level hasn't been configured (or set to automatic) */ 62 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 63 64 /* 65 * Some APs experience problems when working with U-APSD. Decreasing the 66 * probability of that happening by using legacy mode for all ACs but VO isn't 67 * enough. 68 * 69 * Cisco 4410N originally forced us to enable VO by default only because it 70 * treated non-VO ACs as legacy. 71 * 72 * However some APs (notably Netgear R7000) silently reclassify packets to 73 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 74 * clients would never see some frames (e.g. ARP responses) or would fetch them 75 * accidentally after a long time. 76 * 77 * It makes little sense to enable u-APSD queues by default because it needs 78 * userspace applications to be aware of it to actually take advantage of the 79 * possible additional powersavings. Implicitly depending on driver autotrigger 80 * frame support doesn't make much sense. 81 */ 82 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 83 84 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 85 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 86 87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 88 89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 90 91 struct ieee80211_fragment_entry { 92 struct sk_buff_head skb_list; 93 unsigned long first_frag_time; 94 u16 seq; 95 u16 extra_len; 96 u16 last_frag; 97 u8 rx_queue; 98 bool check_sequential_pn; /* needed for CCMP/GCMP */ 99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 100 }; 101 102 103 struct ieee80211_bss { 104 u32 device_ts_beacon, device_ts_presp; 105 106 bool wmm_used; 107 bool uapsd_supported; 108 109 #define IEEE80211_MAX_SUPP_RATES 32 110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 111 size_t supp_rates_len; 112 struct ieee80211_rate *beacon_rate; 113 114 /* 115 * During association, we save an ERP value from a probe response so 116 * that we can feed ERP info to the driver when handling the 117 * association completes. these fields probably won't be up-to-date 118 * otherwise, you probably don't want to use them. 119 */ 120 bool has_erp_value; 121 u8 erp_value; 122 123 /* Keep track of the corruption of the last beacon/probe response. */ 124 u8 corrupt_data; 125 126 /* Keep track of what bits of information we have valid info for. */ 127 u8 valid_data; 128 }; 129 130 /** 131 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 132 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 133 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 134 * 135 * These are bss flags that are attached to a bss in the 136 * @corrupt_data field of &struct ieee80211_bss. 137 */ 138 enum ieee80211_bss_corrupt_data_flags { 139 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 140 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 141 }; 142 143 /** 144 * enum ieee80211_valid_data_flags - BSS valid data flags 145 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 146 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 147 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 148 * 149 * These are bss flags that are attached to a bss in the 150 * @valid_data field of &struct ieee80211_bss. They show which parts 151 * of the data structure were received as a result of an un-corrupted 152 * beacon/probe response. 153 */ 154 enum ieee80211_bss_valid_data_flags { 155 IEEE80211_BSS_VALID_WMM = BIT(1), 156 IEEE80211_BSS_VALID_RATES = BIT(2), 157 IEEE80211_BSS_VALID_ERP = BIT(3) 158 }; 159 160 typedef unsigned __bitwise__ ieee80211_tx_result; 161 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 162 #define TX_DROP ((__force ieee80211_tx_result) 1u) 163 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 164 165 #define IEEE80211_TX_UNICAST BIT(1) 166 #define IEEE80211_TX_PS_BUFFERED BIT(2) 167 168 struct ieee80211_tx_data { 169 struct sk_buff *skb; 170 struct sk_buff_head skbs; 171 struct ieee80211_local *local; 172 struct ieee80211_sub_if_data *sdata; 173 struct sta_info *sta; 174 struct ieee80211_key *key; 175 struct ieee80211_tx_rate rate; 176 177 unsigned int flags; 178 }; 179 180 181 typedef unsigned __bitwise__ ieee80211_rx_result; 182 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 183 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 184 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 185 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 186 187 /** 188 * enum ieee80211_packet_rx_flags - packet RX flags 189 * @IEEE80211_RX_AMSDU: a-MSDU packet 190 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 191 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 192 * 193 * These are per-frame flags that are attached to a frame in the 194 * @rx_flags field of &struct ieee80211_rx_status. 195 */ 196 enum ieee80211_packet_rx_flags { 197 IEEE80211_RX_AMSDU = BIT(3), 198 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 199 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 200 }; 201 202 /** 203 * enum ieee80211_rx_flags - RX data flags 204 * 205 * @IEEE80211_RX_CMNTR: received on cooked monitor already 206 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 207 * to cfg80211_report_obss_beacon(). 208 * 209 * These flags are used across handling multiple interfaces 210 * for a single frame. 211 */ 212 enum ieee80211_rx_flags { 213 IEEE80211_RX_CMNTR = BIT(0), 214 IEEE80211_RX_BEACON_REPORTED = BIT(1), 215 }; 216 217 struct ieee80211_rx_data { 218 struct napi_struct *napi; 219 struct sk_buff *skb; 220 struct ieee80211_local *local; 221 struct ieee80211_sub_if_data *sdata; 222 struct sta_info *sta; 223 struct ieee80211_key *key; 224 225 unsigned int flags; 226 227 /* 228 * Index into sequence numbers array, 0..16 229 * since the last (16) is used for non-QoS, 230 * will be 16 on non-QoS frames. 231 */ 232 int seqno_idx; 233 234 /* 235 * Index into the security IV/PN arrays, 0..16 236 * since the last (16) is used for CCMP-encrypted 237 * management frames, will be set to 16 on mgmt 238 * frames and 0 on non-QoS frames. 239 */ 240 int security_idx; 241 242 u32 tkip_iv32; 243 u16 tkip_iv16; 244 }; 245 246 struct ieee80211_csa_settings { 247 const u16 *counter_offsets_beacon; 248 const u16 *counter_offsets_presp; 249 250 int n_counter_offsets_beacon; 251 int n_counter_offsets_presp; 252 253 u8 count; 254 }; 255 256 struct beacon_data { 257 u8 *head, *tail; 258 int head_len, tail_len; 259 struct ieee80211_meshconf_ie *meshconf; 260 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 261 u8 csa_current_counter; 262 struct rcu_head rcu_head; 263 }; 264 265 struct probe_resp { 266 struct rcu_head rcu_head; 267 int len; 268 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 269 u8 data[0]; 270 }; 271 272 struct ps_data { 273 /* yes, this looks ugly, but guarantees that we can later use 274 * bitmap_empty :) 275 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 276 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 277 __aligned(__alignof__(unsigned long)); 278 struct sk_buff_head bc_buf; 279 atomic_t num_sta_ps; /* number of stations in PS mode */ 280 int dtim_count; 281 bool dtim_bc_mc; 282 }; 283 284 struct ieee80211_if_ap { 285 struct beacon_data __rcu *beacon; 286 struct probe_resp __rcu *probe_resp; 287 288 /* to be used after channel switch. */ 289 struct cfg80211_beacon_data *next_beacon; 290 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 291 292 struct ps_data ps; 293 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 294 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 295 driver_smps_mode; /* smps mode request */ 296 297 struct work_struct request_smps_work; 298 }; 299 300 struct ieee80211_if_wds { 301 struct sta_info *sta; 302 u8 remote_addr[ETH_ALEN]; 303 }; 304 305 struct ieee80211_if_vlan { 306 struct list_head list; /* write-protected with RTNL and local->mtx */ 307 308 /* used for all tx if the VLAN is configured to 4-addr mode */ 309 struct sta_info __rcu *sta; 310 }; 311 312 struct mesh_stats { 313 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 314 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 315 __u32 fwded_frames; /* Mesh total forwarded frames */ 316 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 317 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 318 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 319 }; 320 321 #define PREQ_Q_F_START 0x1 322 #define PREQ_Q_F_REFRESH 0x2 323 struct mesh_preq_queue { 324 struct list_head list; 325 u8 dst[ETH_ALEN]; 326 u8 flags; 327 }; 328 329 struct ieee80211_roc_work { 330 struct list_head list; 331 332 struct ieee80211_sub_if_data *sdata; 333 334 struct ieee80211_channel *chan; 335 336 bool started, abort, hw_begun, notified; 337 bool on_channel; 338 339 unsigned long start_time; 340 341 u32 duration, req_duration; 342 struct sk_buff *frame; 343 u64 cookie, mgmt_tx_cookie; 344 enum ieee80211_roc_type type; 345 }; 346 347 /* flags used in struct ieee80211_if_managed.flags */ 348 enum ieee80211_sta_flags { 349 IEEE80211_STA_CONNECTION_POLL = BIT(1), 350 IEEE80211_STA_CONTROL_PORT = BIT(2), 351 IEEE80211_STA_DISABLE_HT = BIT(4), 352 IEEE80211_STA_MFP_ENABLED = BIT(6), 353 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 354 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 355 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 356 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 357 IEEE80211_STA_DISABLE_VHT = BIT(11), 358 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 359 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 360 IEEE80211_STA_DISABLE_WMM = BIT(14), 361 IEEE80211_STA_ENABLE_RRM = BIT(15), 362 }; 363 364 struct ieee80211_mgd_auth_data { 365 struct cfg80211_bss *bss; 366 unsigned long timeout; 367 int tries; 368 u16 algorithm, expected_transaction; 369 370 u8 key[WLAN_KEY_LEN_WEP104]; 371 u8 key_len, key_idx; 372 bool done; 373 bool timeout_started; 374 375 u16 sae_trans, sae_status; 376 size_t data_len; 377 u8 data[]; 378 }; 379 380 struct ieee80211_mgd_assoc_data { 381 struct cfg80211_bss *bss; 382 const u8 *supp_rates; 383 384 unsigned long timeout; 385 int tries; 386 387 u16 capability; 388 u8 prev_bssid[ETH_ALEN]; 389 u8 ssid[IEEE80211_MAX_SSID_LEN]; 390 u8 ssid_len; 391 u8 supp_rates_len; 392 bool wmm, uapsd; 393 bool need_beacon; 394 bool synced; 395 bool timeout_started; 396 397 u8 ap_ht_param; 398 399 struct ieee80211_vht_cap ap_vht_cap; 400 401 size_t ie_len; 402 u8 ie[]; 403 }; 404 405 struct ieee80211_sta_tx_tspec { 406 /* timestamp of the first packet in the time slice */ 407 unsigned long time_slice_start; 408 409 u32 admitted_time; /* in usecs, unlike over the air */ 410 u8 tsid; 411 s8 up; /* signed to be able to invalidate with -1 during teardown */ 412 413 /* consumed TX time in microseconds in the time slice */ 414 u32 consumed_tx_time; 415 enum { 416 TX_TSPEC_ACTION_NONE = 0, 417 TX_TSPEC_ACTION_DOWNGRADE, 418 TX_TSPEC_ACTION_STOP_DOWNGRADE, 419 } action; 420 bool downgraded; 421 }; 422 423 DECLARE_EWMA(beacon_signal, 16, 4) 424 425 struct ieee80211_if_managed { 426 struct timer_list timer; 427 struct timer_list conn_mon_timer; 428 struct timer_list bcn_mon_timer; 429 struct timer_list chswitch_timer; 430 struct work_struct monitor_work; 431 struct work_struct chswitch_work; 432 struct work_struct beacon_connection_loss_work; 433 struct work_struct csa_connection_drop_work; 434 435 unsigned long beacon_timeout; 436 unsigned long probe_timeout; 437 int probe_send_count; 438 bool nullfunc_failed; 439 bool connection_loss; 440 441 struct cfg80211_bss *associated; 442 struct ieee80211_mgd_auth_data *auth_data; 443 struct ieee80211_mgd_assoc_data *assoc_data; 444 445 u8 bssid[ETH_ALEN]; 446 447 u16 aid; 448 449 bool powersave; /* powersave requested for this iface */ 450 bool broken_ap; /* AP is broken -- turn off powersave */ 451 bool have_beacon; 452 u8 dtim_period; 453 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 454 driver_smps_mode; /* smps mode request */ 455 456 struct work_struct request_smps_work; 457 458 unsigned int flags; 459 460 bool csa_waiting_bcn; 461 bool csa_ignored_same_chan; 462 463 bool beacon_crc_valid; 464 u32 beacon_crc; 465 466 bool status_acked; 467 bool status_received; 468 __le16 status_fc; 469 470 enum { 471 IEEE80211_MFP_DISABLED, 472 IEEE80211_MFP_OPTIONAL, 473 IEEE80211_MFP_REQUIRED 474 } mfp; /* management frame protection */ 475 476 /* 477 * Bitmask of enabled u-apsd queues, 478 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 479 * to take effect. 480 */ 481 unsigned int uapsd_queues; 482 483 /* 484 * Maximum number of buffered frames AP can deliver during a 485 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 486 * Needs a new association to take effect. 487 */ 488 unsigned int uapsd_max_sp_len; 489 490 int wmm_last_param_set; 491 492 u8 use_4addr; 493 494 s16 p2p_noa_index; 495 496 struct ewma_beacon_signal ave_beacon_signal; 497 498 /* 499 * Number of Beacon frames used in ave_beacon_signal. This can be used 500 * to avoid generating less reliable cqm events that would be based 501 * only on couple of received frames. 502 */ 503 unsigned int count_beacon_signal; 504 505 /* Number of times beacon loss was invoked. */ 506 unsigned int beacon_loss_count; 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 bool tdls_wider_bw_prohibited; 536 537 /* WMM-AC TSPEC support */ 538 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 539 /* Use a separate work struct so that we can do something here 540 * while the sdata->work is flushing the queues, for example. 541 * otherwise, in scenarios where we hardly get any traffic out 542 * on the BE queue, but there's a lot of VO traffic, we might 543 * get stuck in a downgraded situation and flush takes forever. 544 */ 545 struct delayed_work tx_tspec_wk; 546 }; 547 548 struct ieee80211_if_ibss { 549 struct timer_list timer; 550 struct work_struct csa_connection_drop_work; 551 552 unsigned long last_scan_completed; 553 554 u32 basic_rates; 555 556 bool fixed_bssid; 557 bool fixed_channel; 558 bool privacy; 559 560 bool control_port; 561 bool userspace_handles_dfs; 562 563 u8 bssid[ETH_ALEN] __aligned(2); 564 u8 ssid[IEEE80211_MAX_SSID_LEN]; 565 u8 ssid_len, ie_len; 566 u8 *ie; 567 struct cfg80211_chan_def chandef; 568 569 unsigned long ibss_join_req; 570 /* probe response/beacon for IBSS */ 571 struct beacon_data __rcu *presp; 572 573 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 574 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 575 576 spinlock_t incomplete_lock; 577 struct list_head incomplete_stations; 578 579 enum { 580 IEEE80211_IBSS_MLME_SEARCH, 581 IEEE80211_IBSS_MLME_JOINED, 582 } state; 583 }; 584 585 /** 586 * struct ieee80211_if_ocb - OCB mode state 587 * 588 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 589 * @wrkq_flags: OCB deferred task action 590 * @incomplete_lock: delayed STA insertion lock 591 * @incomplete_stations: list of STAs waiting for delayed insertion 592 * @joined: indication if the interface is connected to an OCB network 593 */ 594 struct ieee80211_if_ocb { 595 struct timer_list housekeeping_timer; 596 unsigned long wrkq_flags; 597 598 spinlock_t incomplete_lock; 599 struct list_head incomplete_stations; 600 601 bool joined; 602 }; 603 604 /** 605 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 606 * 607 * these declarations define the interface, which enables 608 * vendor-specific mesh synchronization 609 * 610 */ 611 struct ieee802_11_elems; 612 struct ieee80211_mesh_sync_ops { 613 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 614 u16 stype, 615 struct ieee80211_mgmt *mgmt, 616 struct ieee802_11_elems *elems, 617 struct ieee80211_rx_status *rx_status); 618 619 /* should be called with beacon_data under RCU read lock */ 620 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 621 struct beacon_data *beacon); 622 /* add other framework functions here */ 623 }; 624 625 struct mesh_csa_settings { 626 struct rcu_head rcu_head; 627 struct cfg80211_csa_settings settings; 628 }; 629 630 struct ieee80211_if_mesh { 631 struct timer_list housekeeping_timer; 632 struct timer_list mesh_path_timer; 633 struct timer_list mesh_path_root_timer; 634 635 unsigned long wrkq_flags; 636 unsigned long mbss_changed; 637 638 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 639 size_t mesh_id_len; 640 /* Active Path Selection Protocol Identifier */ 641 u8 mesh_pp_id; 642 /* Active Path Selection Metric Identifier */ 643 u8 mesh_pm_id; 644 /* Congestion Control Mode Identifier */ 645 u8 mesh_cc_id; 646 /* Synchronization Protocol Identifier */ 647 u8 mesh_sp_id; 648 /* Authentication Protocol Identifier */ 649 u8 mesh_auth_id; 650 /* Local mesh Sequence Number */ 651 u32 sn; 652 /* Last used PREQ ID */ 653 u32 preq_id; 654 atomic_t mpaths; 655 /* Timestamp of last SN update */ 656 unsigned long last_sn_update; 657 /* Time when it's ok to send next PERR */ 658 unsigned long next_perr; 659 /* Timestamp of last PREQ sent */ 660 unsigned long last_preq; 661 struct mesh_rmc *rmc; 662 spinlock_t mesh_preq_queue_lock; 663 struct mesh_preq_queue preq_queue; 664 int preq_queue_len; 665 struct mesh_stats mshstats; 666 struct mesh_config mshcfg; 667 atomic_t estab_plinks; 668 u32 mesh_seqnum; 669 bool accepting_plinks; 670 int num_gates; 671 struct beacon_data __rcu *beacon; 672 const u8 *ie; 673 u8 ie_len; 674 enum { 675 IEEE80211_MESH_SEC_NONE = 0x0, 676 IEEE80211_MESH_SEC_AUTHED = 0x1, 677 IEEE80211_MESH_SEC_SECURED = 0x2, 678 } security; 679 bool user_mpm; 680 /* Extensible Synchronization Framework */ 681 const struct ieee80211_mesh_sync_ops *sync_ops; 682 s64 sync_offset_clockdrift_max; 683 spinlock_t sync_offset_lock; 684 bool adjusting_tbtt; 685 /* mesh power save */ 686 enum nl80211_mesh_power_mode nonpeer_pm; 687 int ps_peers_light_sleep; 688 int ps_peers_deep_sleep; 689 struct ps_data ps; 690 /* Channel Switching Support */ 691 struct mesh_csa_settings __rcu *csa; 692 enum { 693 IEEE80211_MESH_CSA_ROLE_NONE, 694 IEEE80211_MESH_CSA_ROLE_INIT, 695 IEEE80211_MESH_CSA_ROLE_REPEATER, 696 } csa_role; 697 u8 chsw_ttl; 698 u16 pre_value; 699 700 /* offset from skb->data while building IE */ 701 int meshconf_offset; 702 703 struct mesh_table *mesh_paths; 704 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 705 int mesh_paths_generation; 706 int mpp_paths_generation; 707 }; 708 709 #ifdef CONFIG_MAC80211_MESH 710 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 711 do { (msh)->mshstats.name++; } while (0) 712 #else 713 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 714 do { } while (0) 715 #endif 716 717 /** 718 * enum ieee80211_sub_if_data_flags - virtual interface flags 719 * 720 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 721 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 722 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 723 * associated stations and deliver multicast frames both 724 * back to wireless media and to the local net stack. 725 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 726 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 727 */ 728 enum ieee80211_sub_if_data_flags { 729 IEEE80211_SDATA_ALLMULTI = BIT(0), 730 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 731 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 732 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 733 IEEE80211_SDATA_IN_DRIVER = BIT(5), 734 }; 735 736 /** 737 * enum ieee80211_sdata_state_bits - virtual interface state bits 738 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 739 * mirrors netif_running() but is separate for interface type 740 * change handling while the interface is up 741 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 742 * mode, so queues are stopped 743 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 744 * to offchannel, reset when offchannel returns 745 */ 746 enum ieee80211_sdata_state_bits { 747 SDATA_STATE_RUNNING, 748 SDATA_STATE_OFFCHANNEL, 749 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 750 }; 751 752 /** 753 * enum ieee80211_chanctx_mode - channel context configuration mode 754 * 755 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 756 * multiple interfaces 757 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 758 * only by a single interface. This can be used for example for 759 * non-fixed channel IBSS. 760 */ 761 enum ieee80211_chanctx_mode { 762 IEEE80211_CHANCTX_SHARED, 763 IEEE80211_CHANCTX_EXCLUSIVE 764 }; 765 766 /** 767 * enum ieee80211_chanctx_replace_state - channel context replacement state 768 * 769 * This is used for channel context in-place reservations that require channel 770 * context switch/swap. 771 * 772 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 773 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 774 * by a (not yet registered) channel context pointed by %replace_ctx. 775 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 776 * replaces an existing channel context pointed to by %replace_ctx. 777 */ 778 enum ieee80211_chanctx_replace_state { 779 IEEE80211_CHANCTX_REPLACE_NONE, 780 IEEE80211_CHANCTX_WILL_BE_REPLACED, 781 IEEE80211_CHANCTX_REPLACES_OTHER, 782 }; 783 784 struct ieee80211_chanctx { 785 struct list_head list; 786 struct rcu_head rcu_head; 787 788 struct list_head assigned_vifs; 789 struct list_head reserved_vifs; 790 791 enum ieee80211_chanctx_replace_state replace_state; 792 struct ieee80211_chanctx *replace_ctx; 793 794 enum ieee80211_chanctx_mode mode; 795 bool driver_present; 796 797 struct ieee80211_chanctx_conf conf; 798 }; 799 800 struct mac80211_qos_map { 801 struct cfg80211_qos_map qos_map; 802 struct rcu_head rcu_head; 803 }; 804 805 enum txq_info_flags { 806 IEEE80211_TXQ_STOP, 807 IEEE80211_TXQ_AMPDU, 808 IEEE80211_TXQ_NO_AMSDU, 809 }; 810 811 /** 812 * struct txq_info - per tid queue 813 * 814 * @tin: contains packets split into multiple flows 815 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 816 * a fq_flow which is already owned by a different tin 817 * @def_cvars: codel vars for @def_flow 818 * @frags: used to keep fragments created after dequeue 819 */ 820 struct txq_info { 821 struct fq_tin tin; 822 struct fq_flow def_flow; 823 struct codel_vars def_cvars; 824 struct codel_stats cstats; 825 struct sk_buff_head frags; 826 unsigned long flags; 827 828 /* keep last! */ 829 struct ieee80211_txq txq; 830 }; 831 832 struct ieee80211_if_mntr { 833 u32 flags; 834 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 835 }; 836 837 /** 838 * struct ieee80211_if_nan - NAN state 839 * 840 * @conf: current NAN configuration 841 * @func_ids: a bitmap of available instance_id's 842 */ 843 struct ieee80211_if_nan { 844 struct cfg80211_nan_conf conf; 845 846 /* protects function_inst_ids */ 847 spinlock_t func_lock; 848 struct idr function_inst_ids; 849 }; 850 851 struct ieee80211_sub_if_data { 852 struct list_head list; 853 854 struct wireless_dev wdev; 855 856 /* keys */ 857 struct list_head key_list; 858 859 /* count for keys needing tailroom space allocation */ 860 int crypto_tx_tailroom_needed_cnt; 861 int crypto_tx_tailroom_pending_dec; 862 struct delayed_work dec_tailroom_needed_wk; 863 864 struct net_device *dev; 865 struct ieee80211_local *local; 866 867 unsigned int flags; 868 869 unsigned long state; 870 871 char name[IFNAMSIZ]; 872 873 /* Fragment table for host-based reassembly */ 874 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 875 unsigned int fragment_next; 876 877 /* TID bitmap for NoAck policy */ 878 u16 noack_map; 879 880 /* bit field of ACM bits (BIT(802.1D tag)) */ 881 u8 wmm_acm; 882 883 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 884 struct ieee80211_key __rcu *default_unicast_key; 885 struct ieee80211_key __rcu *default_multicast_key; 886 struct ieee80211_key __rcu *default_mgmt_key; 887 888 u16 sequence_number; 889 __be16 control_port_protocol; 890 bool control_port_no_encrypt; 891 int encrypt_headroom; 892 893 atomic_t num_tx_queued; 894 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 895 struct mac80211_qos_map __rcu *qos_map; 896 897 struct work_struct csa_finalize_work; 898 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 899 struct cfg80211_chan_def csa_chandef; 900 901 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 902 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 903 904 /* context reservation -- protected with chanctx_mtx */ 905 struct ieee80211_chanctx *reserved_chanctx; 906 struct cfg80211_chan_def reserved_chandef; 907 bool reserved_radar_required; 908 bool reserved_ready; 909 910 /* used to reconfigure hardware SM PS */ 911 struct work_struct recalc_smps; 912 913 struct work_struct work; 914 struct sk_buff_head skb_queue; 915 916 u8 needed_rx_chains; 917 enum ieee80211_smps_mode smps_mode; 918 919 int user_power_level; /* in dBm */ 920 int ap_power_level; /* in dBm */ 921 922 bool radar_required; 923 struct delayed_work dfs_cac_timer_work; 924 925 /* 926 * AP this belongs to: self in AP mode and 927 * corresponding AP in VLAN mode, NULL for 928 * all others (might be needed later in IBSS) 929 */ 930 struct ieee80211_if_ap *bss; 931 932 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 933 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 934 935 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 936 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 937 938 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 939 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 940 941 union { 942 struct ieee80211_if_ap ap; 943 struct ieee80211_if_wds wds; 944 struct ieee80211_if_vlan vlan; 945 struct ieee80211_if_managed mgd; 946 struct ieee80211_if_ibss ibss; 947 struct ieee80211_if_mesh mesh; 948 struct ieee80211_if_ocb ocb; 949 struct ieee80211_if_mntr mntr; 950 struct ieee80211_if_nan nan; 951 } u; 952 953 #ifdef CONFIG_MAC80211_DEBUGFS 954 struct { 955 struct dentry *subdir_stations; 956 struct dentry *default_unicast_key; 957 struct dentry *default_multicast_key; 958 struct dentry *default_mgmt_key; 959 } debugfs; 960 #endif 961 962 /* must be last, dynamically sized area in this! */ 963 struct ieee80211_vif vif; 964 }; 965 966 static inline 967 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 968 { 969 return container_of(p, struct ieee80211_sub_if_data, vif); 970 } 971 972 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 973 __acquires(&sdata->wdev.mtx) 974 { 975 mutex_lock(&sdata->wdev.mtx); 976 __acquire(&sdata->wdev.mtx); 977 } 978 979 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 980 __releases(&sdata->wdev.mtx) 981 { 982 mutex_unlock(&sdata->wdev.mtx); 983 __release(&sdata->wdev.mtx); 984 } 985 986 #define sdata_dereference(p, sdata) \ 987 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 988 989 static inline void 990 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 991 { 992 lockdep_assert_held(&sdata->wdev.mtx); 993 } 994 995 static inline enum nl80211_band 996 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 997 { 998 enum nl80211_band band = NL80211_BAND_2GHZ; 999 struct ieee80211_chanctx_conf *chanctx_conf; 1000 1001 rcu_read_lock(); 1002 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1003 if (!WARN_ON(!chanctx_conf)) 1004 band = chanctx_conf->def.chan->band; 1005 rcu_read_unlock(); 1006 1007 return band; 1008 } 1009 1010 static inline int 1011 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1012 { 1013 switch (chandef->width) { 1014 case NL80211_CHAN_WIDTH_5: 1015 return 2; 1016 case NL80211_CHAN_WIDTH_10: 1017 return 1; 1018 default: 1019 return 0; 1020 } 1021 } 1022 1023 static inline int 1024 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1025 { 1026 struct ieee80211_chanctx_conf *chanctx_conf; 1027 int shift = 0; 1028 1029 rcu_read_lock(); 1030 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1031 if (chanctx_conf) 1032 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1033 rcu_read_unlock(); 1034 1035 return shift; 1036 } 1037 1038 struct ieee80211_rx_agg { 1039 u8 addr[ETH_ALEN]; 1040 u16 tid; 1041 }; 1042 1043 enum sdata_queue_type { 1044 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1045 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1046 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1047 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1048 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1049 }; 1050 1051 enum { 1052 IEEE80211_RX_MSG = 1, 1053 IEEE80211_TX_STATUS_MSG = 2, 1054 }; 1055 1056 enum queue_stop_reason { 1057 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1058 IEEE80211_QUEUE_STOP_REASON_PS, 1059 IEEE80211_QUEUE_STOP_REASON_CSA, 1060 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1061 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1062 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1063 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1064 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1065 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1066 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1067 1068 IEEE80211_QUEUE_STOP_REASONS, 1069 }; 1070 1071 #ifdef CONFIG_MAC80211_LEDS 1072 struct tpt_led_trigger { 1073 char name[32]; 1074 const struct ieee80211_tpt_blink *blink_table; 1075 unsigned int blink_table_len; 1076 struct timer_list timer; 1077 unsigned long prev_traffic; 1078 unsigned long tx_bytes, rx_bytes; 1079 unsigned int active, want; 1080 bool running; 1081 }; 1082 #endif 1083 1084 /** 1085 * mac80211 scan flags - currently active scan mode 1086 * 1087 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1088 * well be on the operating channel 1089 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1090 * determine if we are on the operating channel or not 1091 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1092 * channel. This should not interrupt normal traffic. 1093 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1094 * that the scan completed. 1095 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1096 * a scan complete for an aborted scan. 1097 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1098 * cancelled. 1099 */ 1100 enum { 1101 SCAN_SW_SCANNING, 1102 SCAN_HW_SCANNING, 1103 SCAN_ONCHANNEL_SCANNING, 1104 SCAN_COMPLETED, 1105 SCAN_ABORTED, 1106 SCAN_HW_CANCELLED, 1107 }; 1108 1109 /** 1110 * enum mac80211_scan_state - scan state machine states 1111 * 1112 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1113 * determines if we should keep on scanning or switch back to the 1114 * operating channel 1115 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1116 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1117 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1118 * send out data 1119 * @SCAN_RESUME: Resume the scan and scan the next channel 1120 * @SCAN_ABORT: Abort the scan and go back to operating channel 1121 */ 1122 enum mac80211_scan_state { 1123 SCAN_DECISION, 1124 SCAN_SET_CHANNEL, 1125 SCAN_SEND_PROBE, 1126 SCAN_SUSPEND, 1127 SCAN_RESUME, 1128 SCAN_ABORT, 1129 }; 1130 1131 struct ieee80211_local { 1132 /* embed the driver visible part. 1133 * don't cast (use the static inlines below), but we keep 1134 * it first anyway so they become a no-op */ 1135 struct ieee80211_hw hw; 1136 1137 struct fq fq; 1138 struct codel_vars *cvars; 1139 struct codel_params cparams; 1140 1141 const struct ieee80211_ops *ops; 1142 1143 /* 1144 * private workqueue to mac80211. mac80211 makes this accessible 1145 * via ieee80211_queue_work() 1146 */ 1147 struct workqueue_struct *workqueue; 1148 1149 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1150 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1151 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1152 spinlock_t queue_stop_reason_lock; 1153 1154 int open_count; 1155 int monitors, cooked_mntrs; 1156 /* number of interfaces with corresponding FIF_ flags */ 1157 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1158 fif_probe_req; 1159 int probe_req_reg; 1160 unsigned int filter_flags; /* FIF_* */ 1161 1162 bool wiphy_ciphers_allocated; 1163 1164 bool use_chanctx; 1165 1166 /* protects the aggregated multicast list and filter calls */ 1167 spinlock_t filter_lock; 1168 1169 /* used for uploading changed mc list */ 1170 struct work_struct reconfig_filter; 1171 1172 /* aggregated multicast list */ 1173 struct netdev_hw_addr_list mc_list; 1174 1175 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1176 1177 /* 1178 * suspended is true if we finished all the suspend _and_ we have 1179 * not yet come up from resume. This is to be used by mac80211 1180 * to ensure driver sanity during suspend and mac80211's own 1181 * sanity. It can eventually be used for WoW as well. 1182 */ 1183 bool suspended; 1184 1185 /* 1186 * Resuming is true while suspended, but when we're reprogramming the 1187 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1188 * again even though some other parts of the stack are still suspended 1189 * and we still drop received frames to avoid waking the stack. 1190 */ 1191 bool resuming; 1192 1193 /* 1194 * quiescing is true during the suspend process _only_ to 1195 * ease timer cancelling etc. 1196 */ 1197 bool quiescing; 1198 1199 /* device is started */ 1200 bool started; 1201 1202 /* device is during a HW reconfig */ 1203 bool in_reconfig; 1204 1205 /* wowlan is enabled -- don't reconfig on resume */ 1206 bool wowlan; 1207 1208 struct work_struct radar_detected_work; 1209 1210 /* number of RX chains the hardware has */ 1211 u8 rx_chains; 1212 1213 int tx_headroom; /* required headroom for hardware/radiotap */ 1214 1215 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1216 * added to skb_queue will be processed, but frames in 1217 * skb_queue_unreliable may be dropped if the total length of these 1218 * queues increases over the limit. */ 1219 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1220 struct tasklet_struct tasklet; 1221 struct sk_buff_head skb_queue; 1222 struct sk_buff_head skb_queue_unreliable; 1223 1224 spinlock_t rx_path_lock; 1225 1226 /* Station data */ 1227 /* 1228 * The mutex only protects the list, hash table and 1229 * counter, reads are done with RCU. 1230 */ 1231 struct mutex sta_mtx; 1232 spinlock_t tim_lock; 1233 unsigned long num_sta; 1234 struct list_head sta_list; 1235 struct rhltable sta_hash; 1236 struct timer_list sta_cleanup; 1237 int sta_generation; 1238 1239 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1240 struct tasklet_struct tx_pending_tasklet; 1241 1242 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1243 1244 /* number of interfaces with allmulti RX */ 1245 atomic_t iff_allmultis; 1246 1247 struct rate_control_ref *rate_ctrl; 1248 1249 struct crypto_cipher *wep_tx_tfm; 1250 struct crypto_cipher *wep_rx_tfm; 1251 u32 wep_iv; 1252 1253 /* see iface.c */ 1254 struct list_head interfaces; 1255 struct mutex iflist_mtx; 1256 1257 /* 1258 * Key mutex, protects sdata's key_list and sta_info's 1259 * key pointers (write access, they're RCU.) 1260 */ 1261 struct mutex key_mtx; 1262 1263 /* mutex for scan and work locking */ 1264 struct mutex mtx; 1265 1266 /* Scanning and BSS list */ 1267 unsigned long scanning; 1268 struct cfg80211_ssid scan_ssid; 1269 struct cfg80211_scan_request *int_scan_req; 1270 struct cfg80211_scan_request __rcu *scan_req; 1271 struct ieee80211_scan_request *hw_scan_req; 1272 struct cfg80211_chan_def scan_chandef; 1273 enum nl80211_band hw_scan_band; 1274 int scan_channel_idx; 1275 int scan_ies_len; 1276 int hw_scan_ies_bufsize; 1277 struct cfg80211_scan_info scan_info; 1278 1279 struct work_struct sched_scan_stopped_work; 1280 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1281 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1282 u8 scan_addr[ETH_ALEN]; 1283 1284 unsigned long leave_oper_channel_time; 1285 enum mac80211_scan_state next_scan_state; 1286 struct delayed_work scan_work; 1287 struct ieee80211_sub_if_data __rcu *scan_sdata; 1288 /* For backward compatibility only -- do not use */ 1289 struct cfg80211_chan_def _oper_chandef; 1290 1291 /* Temporary remain-on-channel for off-channel operations */ 1292 struct ieee80211_channel *tmp_channel; 1293 1294 /* channel contexts */ 1295 struct list_head chanctx_list; 1296 struct mutex chanctx_mtx; 1297 1298 #ifdef CONFIG_MAC80211_LEDS 1299 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1300 struct led_trigger tpt_led; 1301 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1302 atomic_t radio_led_active, tpt_led_active; 1303 struct tpt_led_trigger *tpt_led_trigger; 1304 #endif 1305 1306 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1307 /* SNMP counters */ 1308 /* dot11CountersTable */ 1309 u32 dot11TransmittedFragmentCount; 1310 u32 dot11MulticastTransmittedFrameCount; 1311 u32 dot11FailedCount; 1312 u32 dot11RetryCount; 1313 u32 dot11MultipleRetryCount; 1314 u32 dot11FrameDuplicateCount; 1315 u32 dot11ReceivedFragmentCount; 1316 u32 dot11MulticastReceivedFrameCount; 1317 u32 dot11TransmittedFrameCount; 1318 1319 /* TX/RX handler statistics */ 1320 unsigned int tx_handlers_drop; 1321 unsigned int tx_handlers_queued; 1322 unsigned int tx_handlers_drop_wep; 1323 unsigned int tx_handlers_drop_not_assoc; 1324 unsigned int tx_handlers_drop_unauth_port; 1325 unsigned int rx_handlers_drop; 1326 unsigned int rx_handlers_queued; 1327 unsigned int rx_handlers_drop_nullfunc; 1328 unsigned int rx_handlers_drop_defrag; 1329 unsigned int tx_expand_skb_head; 1330 unsigned int tx_expand_skb_head_cloned; 1331 unsigned int rx_expand_skb_head_defrag; 1332 unsigned int rx_handlers_fragments; 1333 unsigned int tx_status_drop; 1334 #define I802_DEBUG_INC(c) (c)++ 1335 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1336 #define I802_DEBUG_INC(c) do { } while (0) 1337 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1338 1339 1340 int total_ps_buffered; /* total number of all buffered unicast and 1341 * multicast packets for power saving stations 1342 */ 1343 1344 bool pspolling; 1345 bool offchannel_ps_enabled; 1346 /* 1347 * PS can only be enabled when we have exactly one managed 1348 * interface (and monitors) in PS, this then points there. 1349 */ 1350 struct ieee80211_sub_if_data *ps_sdata; 1351 struct work_struct dynamic_ps_enable_work; 1352 struct work_struct dynamic_ps_disable_work; 1353 struct timer_list dynamic_ps_timer; 1354 struct notifier_block ifa_notifier; 1355 struct notifier_block ifa6_notifier; 1356 1357 /* 1358 * The dynamic ps timeout configured from user space via WEXT - 1359 * this will override whatever chosen by mac80211 internally. 1360 */ 1361 int dynamic_ps_forced_timeout; 1362 1363 int user_power_level; /* in dBm, for all interfaces */ 1364 1365 enum ieee80211_smps_mode smps_mode; 1366 1367 struct work_struct restart_work; 1368 1369 #ifdef CONFIG_MAC80211_DEBUGFS 1370 struct local_debugfsdentries { 1371 struct dentry *rcdir; 1372 struct dentry *keys; 1373 } debugfs; 1374 #endif 1375 1376 /* 1377 * Remain-on-channel support 1378 */ 1379 struct delayed_work roc_work; 1380 struct list_head roc_list; 1381 struct work_struct hw_roc_start, hw_roc_done; 1382 unsigned long hw_roc_start_time; 1383 u64 roc_cookie_counter; 1384 1385 struct idr ack_status_frames; 1386 spinlock_t ack_status_lock; 1387 1388 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1389 1390 /* virtual monitor interface */ 1391 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1392 struct cfg80211_chan_def monitor_chandef; 1393 1394 /* extended capabilities provided by mac80211 */ 1395 u8 ext_capa[8]; 1396 1397 /* TDLS channel switch */ 1398 struct work_struct tdls_chsw_work; 1399 struct sk_buff_head skb_queue_tdls_chsw; 1400 }; 1401 1402 static inline struct ieee80211_sub_if_data * 1403 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1404 { 1405 return netdev_priv(dev); 1406 } 1407 1408 static inline struct ieee80211_sub_if_data * 1409 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1410 { 1411 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1412 } 1413 1414 /* this struct represents 802.11n's RA/TID combination */ 1415 struct ieee80211_ra_tid { 1416 u8 ra[ETH_ALEN]; 1417 u16 tid; 1418 }; 1419 1420 /* this struct holds the value parsing from channel switch IE */ 1421 struct ieee80211_csa_ie { 1422 struct cfg80211_chan_def chandef; 1423 u8 mode; 1424 u8 count; 1425 u8 ttl; 1426 u16 pre_value; 1427 }; 1428 1429 /* Parsed Information Elements */ 1430 struct ieee802_11_elems { 1431 const u8 *ie_start; 1432 size_t total_len; 1433 1434 /* pointers to IEs */ 1435 const struct ieee80211_tdls_lnkie *lnk_id; 1436 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1437 const u8 *ext_capab; 1438 const u8 *ssid; 1439 const u8 *supp_rates; 1440 const u8 *ds_params; 1441 const struct ieee80211_tim_ie *tim; 1442 const u8 *challenge; 1443 const u8 *rsn; 1444 const u8 *erp_info; 1445 const u8 *ext_supp_rates; 1446 const u8 *wmm_info; 1447 const u8 *wmm_param; 1448 const struct ieee80211_ht_cap *ht_cap_elem; 1449 const struct ieee80211_ht_operation *ht_operation; 1450 const struct ieee80211_vht_cap *vht_cap_elem; 1451 const struct ieee80211_vht_operation *vht_operation; 1452 const struct ieee80211_meshconf_ie *mesh_config; 1453 const u8 *mesh_id; 1454 const u8 *peering; 1455 const __le16 *awake_window; 1456 const u8 *preq; 1457 const u8 *prep; 1458 const u8 *perr; 1459 const struct ieee80211_rann_ie *rann; 1460 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1461 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1462 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1463 const u8 *country_elem; 1464 const u8 *pwr_constr_elem; 1465 const u8 *cisco_dtpc_elem; 1466 const struct ieee80211_timeout_interval_ie *timeout_int; 1467 const u8 *opmode_notif; 1468 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1469 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1470 1471 /* length of them, respectively */ 1472 u8 ext_capab_len; 1473 u8 ssid_len; 1474 u8 supp_rates_len; 1475 u8 tim_len; 1476 u8 challenge_len; 1477 u8 rsn_len; 1478 u8 ext_supp_rates_len; 1479 u8 wmm_info_len; 1480 u8 wmm_param_len; 1481 u8 mesh_id_len; 1482 u8 peering_len; 1483 u8 preq_len; 1484 u8 prep_len; 1485 u8 perr_len; 1486 u8 country_elem_len; 1487 1488 /* whether a parse error occurred while retrieving these elements */ 1489 bool parse_error; 1490 }; 1491 1492 static inline struct ieee80211_local *hw_to_local( 1493 struct ieee80211_hw *hw) 1494 { 1495 return container_of(hw, struct ieee80211_local, hw); 1496 } 1497 1498 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1499 { 1500 return container_of(txq, struct txq_info, txq); 1501 } 1502 1503 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1504 { 1505 struct txq_info *txqi = to_txq_info(txq); 1506 1507 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1508 } 1509 1510 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1511 { 1512 return ether_addr_equal(raddr, addr) || 1513 is_broadcast_ether_addr(raddr); 1514 } 1515 1516 static inline bool 1517 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1518 { 1519 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1520 status->flag & RX_FLAG_MACTIME_END); 1521 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1522 return true; 1523 /* can't handle HT/VHT preamble yet */ 1524 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1525 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT))) 1526 return true; 1527 return false; 1528 } 1529 1530 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1531 struct ieee80211_rx_status *status, 1532 unsigned int mpdu_len, 1533 unsigned int mpdu_offset); 1534 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1535 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1536 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1537 u32 changed); 1538 void ieee80211_configure_filter(struct ieee80211_local *local); 1539 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1540 1541 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1542 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1543 u64 *cookie, gfp_t gfp); 1544 1545 void ieee80211_check_fast_rx(struct sta_info *sta); 1546 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1547 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1548 void ieee80211_clear_fast_rx(struct sta_info *sta); 1549 1550 /* STA code */ 1551 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1552 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1553 struct cfg80211_auth_request *req); 1554 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1555 struct cfg80211_assoc_request *req); 1556 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1557 struct cfg80211_deauth_request *req); 1558 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1559 struct cfg80211_disassoc_request *req); 1560 void ieee80211_send_pspoll(struct ieee80211_local *local, 1561 struct ieee80211_sub_if_data *sdata); 1562 void ieee80211_recalc_ps(struct ieee80211_local *local); 1563 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1564 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1565 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1566 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1567 struct sk_buff *skb); 1568 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1569 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1570 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1571 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1572 __le16 fc, bool acked); 1573 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1574 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1575 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1576 1577 /* IBSS code */ 1578 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1579 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1580 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1581 const u8 *bssid, const u8 *addr, u32 supp_rates); 1582 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1583 struct cfg80211_ibss_params *params); 1584 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1585 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1586 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1587 struct sk_buff *skb); 1588 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1589 struct cfg80211_csa_settings *csa_settings); 1590 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1591 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1592 1593 /* OCB code */ 1594 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1596 const u8 *bssid, const u8 *addr, u32 supp_rates); 1597 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1598 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1599 struct ocb_setup *setup); 1600 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1601 1602 /* mesh code */ 1603 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1604 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1605 struct sk_buff *skb); 1606 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1607 struct cfg80211_csa_settings *csa_settings); 1608 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1609 1610 /* scan/BSS handling */ 1611 void ieee80211_scan_work(struct work_struct *work); 1612 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1613 const u8 *ssid, u8 ssid_len, 1614 struct ieee80211_channel **channels, 1615 unsigned int n_channels, 1616 enum nl80211_bss_scan_width scan_width); 1617 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1618 struct cfg80211_scan_request *req); 1619 void ieee80211_scan_cancel(struct ieee80211_local *local); 1620 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1621 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1622 1623 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1624 struct ieee80211_bss * 1625 ieee80211_bss_info_update(struct ieee80211_local *local, 1626 struct ieee80211_rx_status *rx_status, 1627 struct ieee80211_mgmt *mgmt, 1628 size_t len, 1629 struct ieee802_11_elems *elems, 1630 struct ieee80211_channel *channel); 1631 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1632 struct ieee80211_bss *bss); 1633 1634 /* scheduled scan handling */ 1635 int 1636 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1637 struct cfg80211_sched_scan_request *req); 1638 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1639 struct cfg80211_sched_scan_request *req); 1640 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1641 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1642 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1643 1644 /* off-channel/mgmt-tx */ 1645 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1646 void ieee80211_offchannel_return(struct ieee80211_local *local); 1647 void ieee80211_roc_setup(struct ieee80211_local *local); 1648 void ieee80211_start_next_roc(struct ieee80211_local *local); 1649 void ieee80211_roc_purge(struct ieee80211_local *local, 1650 struct ieee80211_sub_if_data *sdata); 1651 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1652 struct ieee80211_channel *chan, 1653 unsigned int duration, u64 *cookie); 1654 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1655 struct wireless_dev *wdev, u64 cookie); 1656 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1657 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1658 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1659 struct wireless_dev *wdev, u64 cookie); 1660 1661 /* channel switch handling */ 1662 void ieee80211_csa_finalize_work(struct work_struct *work); 1663 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1664 struct cfg80211_csa_settings *params); 1665 1666 /* interface handling */ 1667 int ieee80211_iface_init(void); 1668 void ieee80211_iface_exit(void); 1669 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1670 unsigned char name_assign_type, 1671 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1672 struct vif_params *params); 1673 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1674 enum nl80211_iftype type); 1675 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1676 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1677 u32 ieee80211_idle_off(struct ieee80211_local *local); 1678 void ieee80211_recalc_idle(struct ieee80211_local *local); 1679 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1680 const int offset); 1681 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1682 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1683 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1684 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1685 1686 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1687 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1688 bool update_bss); 1689 1690 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1691 { 1692 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1693 } 1694 1695 /* tx handling */ 1696 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1697 void ieee80211_tx_pending(unsigned long data); 1698 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1699 struct net_device *dev); 1700 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1701 struct net_device *dev); 1702 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1703 struct net_device *dev, 1704 u32 info_flags); 1705 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1706 struct sk_buff_head *skbs); 1707 struct sk_buff * 1708 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1709 struct sk_buff *skb, u32 info_flags); 1710 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1711 struct ieee80211_supported_band *sband, 1712 int retry_count, int shift, bool send_to_cooked); 1713 1714 void ieee80211_check_fast_xmit(struct sta_info *sta); 1715 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1716 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1717 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1718 1719 /* HT */ 1720 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1721 struct ieee80211_sta_ht_cap *ht_cap); 1722 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1723 struct ieee80211_supported_band *sband, 1724 const struct ieee80211_ht_cap *ht_cap_ie, 1725 struct sta_info *sta); 1726 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1727 const u8 *da, u16 tid, 1728 u16 initiator, u16 reason_code); 1729 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1730 enum ieee80211_smps_mode smps, const u8 *da, 1731 const u8 *bssid); 1732 void ieee80211_request_smps_ap_work(struct work_struct *work); 1733 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1734 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1735 enum ieee80211_smps_mode smps_mode_new); 1736 1737 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1738 u16 initiator, u16 reason, bool stop); 1739 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1740 u16 initiator, u16 reason, bool stop); 1741 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1742 u8 dialog_token, u16 timeout, 1743 u16 start_seq_num, u16 ba_policy, u16 tid, 1744 u16 buf_size, bool tx, bool auto_seq); 1745 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1746 enum ieee80211_agg_stop_reason reason); 1747 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1748 struct sta_info *sta, 1749 struct ieee80211_mgmt *mgmt, size_t len); 1750 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1751 struct sta_info *sta, 1752 struct ieee80211_mgmt *mgmt, 1753 size_t len); 1754 void ieee80211_process_addba_request(struct ieee80211_local *local, 1755 struct sta_info *sta, 1756 struct ieee80211_mgmt *mgmt, 1757 size_t len); 1758 1759 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1760 enum ieee80211_agg_stop_reason reason); 1761 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1762 enum ieee80211_agg_stop_reason reason); 1763 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1764 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1765 void ieee80211_ba_session_work(struct work_struct *work); 1766 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1767 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1768 1769 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1770 1771 /* VHT */ 1772 void 1773 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1774 struct ieee80211_supported_band *sband, 1775 const struct ieee80211_vht_cap *vht_cap_ie, 1776 struct sta_info *sta); 1777 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1778 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1779 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1780 enum ieee80211_sta_rx_bandwidth 1781 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1782 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1783 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1784 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1785 struct ieee80211_mgmt *mgmt); 1786 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1787 struct sta_info *sta, u8 opmode, 1788 enum nl80211_band band); 1789 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1790 struct sta_info *sta, u8 opmode, 1791 enum nl80211_band band); 1792 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1793 struct ieee80211_sta_vht_cap *vht_cap); 1794 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1795 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1796 1797 /* Spectrum management */ 1798 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1799 struct ieee80211_mgmt *mgmt, 1800 size_t len); 1801 /** 1802 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1803 * @sdata: the sdata of the interface which has received the frame 1804 * @elems: parsed 802.11 elements received with the frame 1805 * @current_band: indicates the current band 1806 * @sta_flags: contains information about own capabilities and restrictions 1807 * to decide which channel switch announcements can be accepted. Only the 1808 * following subset of &enum ieee80211_sta_flags are evaluated: 1809 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1810 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1811 * %IEEE80211_STA_DISABLE_160MHZ. 1812 * @bssid: the currently connected bssid (for reporting) 1813 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1814 All of them will be filled with if success only. 1815 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1816 */ 1817 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1818 struct ieee802_11_elems *elems, 1819 enum nl80211_band current_band, 1820 u32 sta_flags, u8 *bssid, 1821 struct ieee80211_csa_ie *csa_ie); 1822 1823 /* Suspend/resume and hw reconfiguration */ 1824 int ieee80211_reconfig(struct ieee80211_local *local); 1825 void ieee80211_stop_device(struct ieee80211_local *local); 1826 1827 int __ieee80211_suspend(struct ieee80211_hw *hw, 1828 struct cfg80211_wowlan *wowlan); 1829 1830 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1831 { 1832 struct ieee80211_local *local = hw_to_local(hw); 1833 1834 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1835 !test_bit(SCAN_COMPLETED, &local->scanning), 1836 "%s: resume with hardware scan still in progress\n", 1837 wiphy_name(hw->wiphy)); 1838 1839 return ieee80211_reconfig(hw_to_local(hw)); 1840 } 1841 1842 /* utility functions/constants */ 1843 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1844 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1845 int rate, int erp, int short_preamble, 1846 int shift); 1847 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1848 bool bss_notify, bool enable_qos); 1849 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1850 struct sta_info *sta, struct sk_buff *skb); 1851 1852 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1853 struct sk_buff *skb, int tid, 1854 enum nl80211_band band); 1855 1856 static inline void 1857 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1858 struct sk_buff *skb, int tid, 1859 enum nl80211_band band) 1860 { 1861 rcu_read_lock(); 1862 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1863 rcu_read_unlock(); 1864 } 1865 1866 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1867 struct sk_buff *skb, int tid) 1868 { 1869 struct ieee80211_chanctx_conf *chanctx_conf; 1870 1871 rcu_read_lock(); 1872 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1873 if (WARN_ON(!chanctx_conf)) { 1874 rcu_read_unlock(); 1875 kfree_skb(skb); 1876 return; 1877 } 1878 1879 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1880 chanctx_conf->def.chan->band); 1881 rcu_read_unlock(); 1882 } 1883 1884 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1885 struct sk_buff *skb) 1886 { 1887 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1888 ieee80211_tx_skb_tid(sdata, skb, 7); 1889 } 1890 1891 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1892 struct ieee802_11_elems *elems, 1893 u64 filter, u32 crc); 1894 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1895 bool action, 1896 struct ieee802_11_elems *elems) 1897 { 1898 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1899 } 1900 1901 1902 extern const int ieee802_1d_to_ac[8]; 1903 1904 static inline int ieee80211_ac_from_tid(int tid) 1905 { 1906 return ieee802_1d_to_ac[tid & 7]; 1907 } 1908 1909 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1910 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1911 void ieee80211_dynamic_ps_timer(unsigned long data); 1912 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1913 struct ieee80211_sub_if_data *sdata, 1914 bool powersave); 1915 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1916 struct ieee80211_hdr *hdr); 1917 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1918 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1919 1920 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1921 unsigned long queues, 1922 enum queue_stop_reason reason, 1923 bool refcounted); 1924 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1925 struct ieee80211_sub_if_data *sdata, 1926 enum queue_stop_reason reason); 1927 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1928 struct ieee80211_sub_if_data *sdata, 1929 enum queue_stop_reason reason); 1930 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1931 unsigned long queues, 1932 enum queue_stop_reason reason, 1933 bool refcounted); 1934 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1935 enum queue_stop_reason reason, 1936 bool refcounted); 1937 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1938 enum queue_stop_reason reason, 1939 bool refcounted); 1940 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1941 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1942 struct sk_buff *skb); 1943 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1944 struct sk_buff_head *skbs); 1945 void ieee80211_flush_queues(struct ieee80211_local *local, 1946 struct ieee80211_sub_if_data *sdata, bool drop); 1947 void __ieee80211_flush_queues(struct ieee80211_local *local, 1948 struct ieee80211_sub_if_data *sdata, 1949 unsigned int queues, bool drop); 1950 1951 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1952 { 1953 /* 1954 * If quiescing is set, we are racing with __ieee80211_suspend. 1955 * __ieee80211_suspend flushes the workers after setting quiescing, 1956 * and we check quiescing / suspended before enqueing new workers. 1957 * We should abort the worker to avoid the races below. 1958 */ 1959 if (local->quiescing) 1960 return false; 1961 1962 /* 1963 * We might already be suspended if the following scenario occurs: 1964 * __ieee80211_suspend Control path 1965 * 1966 * if (local->quiescing) 1967 * return; 1968 * local->quiescing = true; 1969 * flush_workqueue(); 1970 * queue_work(...); 1971 * local->suspended = true; 1972 * local->quiescing = false; 1973 * worker starts running... 1974 */ 1975 if (local->suspended) 1976 return false; 1977 1978 return true; 1979 } 1980 1981 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 1982 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 1983 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 1984 struct sta_info *sta, 1985 struct txq_info *txq, int tid); 1986 void ieee80211_txq_purge(struct ieee80211_local *local, 1987 struct txq_info *txqi); 1988 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1989 u16 transaction, u16 auth_alg, u16 status, 1990 const u8 *extra, size_t extra_len, const u8 *bssid, 1991 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1992 u32 tx_flags); 1993 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1994 const u8 *bssid, u16 stype, u16 reason, 1995 bool send_frame, u8 *frame_buf); 1996 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1997 size_t buffer_len, 1998 struct ieee80211_scan_ies *ie_desc, 1999 const u8 *ie, size_t ie_len, 2000 u8 bands_used, u32 *rate_masks, 2001 struct cfg80211_chan_def *chandef); 2002 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2003 const u8 *src, const u8 *dst, 2004 u32 ratemask, 2005 struct ieee80211_channel *chan, 2006 const u8 *ssid, size_t ssid_len, 2007 const u8 *ie, size_t ie_len, 2008 bool directed); 2009 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 2010 const u8 *src, const u8 *dst, 2011 const u8 *ssid, size_t ssid_len, 2012 const u8 *ie, size_t ie_len, 2013 u32 ratemask, bool directed, u32 tx_flags, 2014 struct ieee80211_channel *channel, bool scan); 2015 2016 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2017 struct ieee802_11_elems *elems, 2018 enum nl80211_band band, u32 *basic_rates); 2019 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2020 enum ieee80211_smps_mode smps_mode); 2021 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2022 enum ieee80211_smps_mode smps_mode); 2023 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2024 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2025 2026 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2027 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2028 u16 cap); 2029 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2030 const struct cfg80211_chan_def *chandef, 2031 u16 prot_mode, bool rifs_mode); 2032 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2033 u32 cap); 2034 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2035 const struct cfg80211_chan_def *chandef); 2036 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2037 const struct ieee80211_supported_band *sband, 2038 const u8 *srates, int srates_len, u32 *rates); 2039 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2040 struct sk_buff *skb, bool need_basic, 2041 enum nl80211_band band); 2042 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2043 struct sk_buff *skb, bool need_basic, 2044 enum nl80211_band band); 2045 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2046 2047 /* channel management */ 2048 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2049 struct cfg80211_chan_def *chandef); 2050 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2051 struct cfg80211_chan_def *chandef); 2052 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2053 2054 int __must_check 2055 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2056 const struct cfg80211_chan_def *chandef, 2057 enum ieee80211_chanctx_mode mode); 2058 int __must_check 2059 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2060 const struct cfg80211_chan_def *chandef, 2061 enum ieee80211_chanctx_mode mode, 2062 bool radar_required); 2063 int __must_check 2064 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2065 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2066 2067 int __must_check 2068 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2069 const struct cfg80211_chan_def *chandef, 2070 u32 *changed); 2071 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2072 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2073 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2074 bool clear); 2075 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2076 struct ieee80211_chanctx *ctx); 2077 2078 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2079 struct ieee80211_chanctx *chanctx); 2080 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2081 struct ieee80211_chanctx *ctx); 2082 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2083 2084 void ieee80211_dfs_cac_timer(unsigned long data); 2085 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2086 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2087 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2088 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2089 struct cfg80211_csa_settings *csa_settings); 2090 2091 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2092 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2093 const struct ieee80211_cipher_scheme * 2094 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2095 enum nl80211_iftype iftype); 2096 int ieee80211_cs_headroom(struct ieee80211_local *local, 2097 struct cfg80211_crypto_settings *crypto, 2098 enum nl80211_iftype iftype); 2099 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2100 struct ieee80211_sub_if_data *sdata); 2101 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2102 const struct cfg80211_chan_def *chandef, 2103 enum ieee80211_chanctx_mode chanmode, 2104 u8 radar_detect); 2105 int ieee80211_max_num_channels(struct ieee80211_local *local); 2106 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2107 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2108 struct ieee80211_chanctx *ctx); 2109 2110 /* TDLS */ 2111 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2112 const u8 *peer, u8 action_code, u8 dialog_token, 2113 u16 status_code, u32 peer_capability, 2114 bool initiator, const u8 *extra_ies, 2115 size_t extra_ies_len); 2116 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2117 const u8 *peer, enum nl80211_tdls_operation oper); 2118 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2119 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2120 const u8 *addr, u8 oper_class, 2121 struct cfg80211_chan_def *chandef); 2122 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2123 struct net_device *dev, 2124 const u8 *addr); 2125 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2126 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2127 2128 extern const struct ethtool_ops ieee80211_ethtool_ops; 2129 2130 #ifdef CONFIG_MAC80211_NOINLINE 2131 #define debug_noinline noinline 2132 #else 2133 #define debug_noinline 2134 #endif 2135 2136 #endif /* IEEE80211_I_H */ 2137