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 <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 struct ieee80211_fragment_entry { 90 struct sk_buff_head skb_list; 91 unsigned long first_frag_time; 92 u16 seq; 93 u16 extra_len; 94 u16 last_frag; 95 u8 rx_queue; 96 bool check_sequential_pn; /* needed for CCMP/GCMP */ 97 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 98 }; 99 100 101 struct ieee80211_bss { 102 u32 device_ts_beacon, device_ts_presp; 103 104 bool wmm_used; 105 bool uapsd_supported; 106 107 #define IEEE80211_MAX_SUPP_RATES 32 108 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 109 size_t supp_rates_len; 110 struct ieee80211_rate *beacon_rate; 111 112 /* 113 * During association, we save an ERP value from a probe response so 114 * that we can feed ERP info to the driver when handling the 115 * association completes. these fields probably won't be up-to-date 116 * otherwise, you probably don't want to use them. 117 */ 118 bool has_erp_value; 119 u8 erp_value; 120 121 /* Keep track of the corruption of the last beacon/probe response. */ 122 u8 corrupt_data; 123 124 /* Keep track of what bits of information we have valid info for. */ 125 u8 valid_data; 126 }; 127 128 /** 129 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 130 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 131 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 132 * 133 * These are bss flags that are attached to a bss in the 134 * @corrupt_data field of &struct ieee80211_bss. 135 */ 136 enum ieee80211_bss_corrupt_data_flags { 137 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 138 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 139 }; 140 141 /** 142 * enum ieee80211_valid_data_flags - BSS valid data flags 143 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 144 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 145 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 146 * 147 * These are bss flags that are attached to a bss in the 148 * @valid_data field of &struct ieee80211_bss. They show which parts 149 * of the data structure were received as a result of an un-corrupted 150 * beacon/probe response. 151 */ 152 enum ieee80211_bss_valid_data_flags { 153 IEEE80211_BSS_VALID_WMM = BIT(1), 154 IEEE80211_BSS_VALID_RATES = BIT(2), 155 IEEE80211_BSS_VALID_ERP = BIT(3) 156 }; 157 158 typedef unsigned __bitwise__ ieee80211_tx_result; 159 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 160 #define TX_DROP ((__force ieee80211_tx_result) 1u) 161 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 162 163 #define IEEE80211_TX_UNICAST BIT(1) 164 #define IEEE80211_TX_PS_BUFFERED BIT(2) 165 166 struct ieee80211_tx_data { 167 struct sk_buff *skb; 168 struct sk_buff_head skbs; 169 struct ieee80211_local *local; 170 struct ieee80211_sub_if_data *sdata; 171 struct sta_info *sta; 172 struct ieee80211_key *key; 173 struct ieee80211_tx_rate rate; 174 175 unsigned int flags; 176 }; 177 178 179 typedef unsigned __bitwise__ ieee80211_rx_result; 180 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 181 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 182 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 183 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 184 185 /** 186 * enum ieee80211_packet_rx_flags - packet RX flags 187 * @IEEE80211_RX_AMSDU: a-MSDU packet 188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 190 * 191 * These are per-frame flags that are attached to a frame in the 192 * @rx_flags field of &struct ieee80211_rx_status. 193 */ 194 enum ieee80211_packet_rx_flags { 195 IEEE80211_RX_AMSDU = BIT(3), 196 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 197 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 198 }; 199 200 /** 201 * enum ieee80211_rx_flags - RX data flags 202 * 203 * @IEEE80211_RX_CMNTR: received on cooked monitor already 204 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 205 * to cfg80211_report_obss_beacon(). 206 * 207 * These flags are used across handling multiple interfaces 208 * for a single frame. 209 */ 210 enum ieee80211_rx_flags { 211 IEEE80211_RX_CMNTR = BIT(0), 212 IEEE80211_RX_BEACON_REPORTED = BIT(1), 213 }; 214 215 struct ieee80211_rx_data { 216 struct napi_struct *napi; 217 struct sk_buff *skb; 218 struct ieee80211_local *local; 219 struct ieee80211_sub_if_data *sdata; 220 struct sta_info *sta; 221 struct ieee80211_key *key; 222 223 unsigned int flags; 224 225 /* 226 * Index into sequence numbers array, 0..16 227 * since the last (16) is used for non-QoS, 228 * will be 16 on non-QoS frames. 229 */ 230 int seqno_idx; 231 232 /* 233 * Index into the security IV/PN arrays, 0..16 234 * since the last (16) is used for CCMP-encrypted 235 * management frames, will be set to 16 on mgmt 236 * frames and 0 on non-QoS frames. 237 */ 238 int security_idx; 239 240 u32 tkip_iv32; 241 u16 tkip_iv16; 242 }; 243 244 struct ieee80211_csa_settings { 245 const u16 *counter_offsets_beacon; 246 const u16 *counter_offsets_presp; 247 248 int n_counter_offsets_beacon; 249 int n_counter_offsets_presp; 250 251 u8 count; 252 }; 253 254 struct beacon_data { 255 u8 *head, *tail; 256 int head_len, tail_len; 257 struct ieee80211_meshconf_ie *meshconf; 258 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 259 u8 csa_current_counter; 260 struct rcu_head rcu_head; 261 }; 262 263 struct probe_resp { 264 struct rcu_head rcu_head; 265 int len; 266 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 267 u8 data[0]; 268 }; 269 270 struct ps_data { 271 /* yes, this looks ugly, but guarantees that we can later use 272 * bitmap_empty :) 273 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 274 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 275 __aligned(__alignof__(unsigned long)); 276 struct sk_buff_head bc_buf; 277 atomic_t num_sta_ps; /* number of stations in PS mode */ 278 int dtim_count; 279 bool dtim_bc_mc; 280 }; 281 282 struct ieee80211_if_ap { 283 struct beacon_data __rcu *beacon; 284 struct probe_resp __rcu *probe_resp; 285 286 /* to be used after channel switch. */ 287 struct cfg80211_beacon_data *next_beacon; 288 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 289 290 struct ps_data ps; 291 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 292 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 293 driver_smps_mode; /* smps mode request */ 294 295 struct work_struct request_smps_work; 296 }; 297 298 struct ieee80211_if_wds { 299 struct sta_info *sta; 300 u8 remote_addr[ETH_ALEN]; 301 }; 302 303 struct ieee80211_if_vlan { 304 struct list_head list; /* write-protected with RTNL and local->mtx */ 305 306 /* used for all tx if the VLAN is configured to 4-addr mode */ 307 struct sta_info __rcu *sta; 308 }; 309 310 struct mesh_stats { 311 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 312 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 313 __u32 fwded_frames; /* Mesh total forwarded frames */ 314 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 315 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 316 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 317 }; 318 319 #define PREQ_Q_F_START 0x1 320 #define PREQ_Q_F_REFRESH 0x2 321 struct mesh_preq_queue { 322 struct list_head list; 323 u8 dst[ETH_ALEN]; 324 u8 flags; 325 }; 326 327 struct ieee80211_roc_work { 328 struct list_head list; 329 330 struct ieee80211_sub_if_data *sdata; 331 332 struct ieee80211_channel *chan; 333 334 bool started, abort, hw_begun, notified; 335 bool on_channel; 336 337 unsigned long start_time; 338 339 u32 duration, req_duration; 340 struct sk_buff *frame; 341 u64 cookie, mgmt_tx_cookie; 342 enum ieee80211_roc_type type; 343 }; 344 345 /* flags used in struct ieee80211_if_managed.flags */ 346 enum ieee80211_sta_flags { 347 IEEE80211_STA_CONNECTION_POLL = BIT(1), 348 IEEE80211_STA_CONTROL_PORT = BIT(2), 349 IEEE80211_STA_DISABLE_HT = BIT(4), 350 IEEE80211_STA_MFP_ENABLED = BIT(6), 351 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 352 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 353 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 354 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 355 IEEE80211_STA_DISABLE_VHT = BIT(11), 356 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 357 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 358 IEEE80211_STA_DISABLE_WMM = BIT(14), 359 IEEE80211_STA_ENABLE_RRM = BIT(15), 360 }; 361 362 struct ieee80211_mgd_auth_data { 363 struct cfg80211_bss *bss; 364 unsigned long timeout; 365 int tries; 366 u16 algorithm, expected_transaction; 367 368 u8 key[WLAN_KEY_LEN_WEP104]; 369 u8 key_len, key_idx; 370 bool done; 371 bool timeout_started; 372 373 u16 sae_trans, sae_status; 374 size_t data_len; 375 u8 data[]; 376 }; 377 378 struct ieee80211_mgd_assoc_data { 379 struct cfg80211_bss *bss; 380 const u8 *supp_rates; 381 382 unsigned long timeout; 383 int tries; 384 385 u16 capability; 386 u8 prev_bssid[ETH_ALEN]; 387 u8 ssid[IEEE80211_MAX_SSID_LEN]; 388 u8 ssid_len; 389 u8 supp_rates_len; 390 bool wmm, uapsd; 391 bool need_beacon; 392 bool synced; 393 bool timeout_started; 394 395 u8 ap_ht_param; 396 397 struct ieee80211_vht_cap ap_vht_cap; 398 399 size_t ie_len; 400 u8 ie[]; 401 }; 402 403 struct ieee80211_sta_tx_tspec { 404 /* timestamp of the first packet in the time slice */ 405 unsigned long time_slice_start; 406 407 u32 admitted_time; /* in usecs, unlike over the air */ 408 u8 tsid; 409 s8 up; /* signed to be able to invalidate with -1 during teardown */ 410 411 /* consumed TX time in microseconds in the time slice */ 412 u32 consumed_tx_time; 413 enum { 414 TX_TSPEC_ACTION_NONE = 0, 415 TX_TSPEC_ACTION_DOWNGRADE, 416 TX_TSPEC_ACTION_STOP_DOWNGRADE, 417 } action; 418 bool downgraded; 419 }; 420 421 DECLARE_EWMA(beacon_signal, 16, 4) 422 423 struct ieee80211_if_managed { 424 struct timer_list timer; 425 struct timer_list conn_mon_timer; 426 struct timer_list bcn_mon_timer; 427 struct timer_list chswitch_timer; 428 struct work_struct monitor_work; 429 struct work_struct chswitch_work; 430 struct work_struct beacon_connection_loss_work; 431 struct work_struct csa_connection_drop_work; 432 433 unsigned long beacon_timeout; 434 unsigned long probe_timeout; 435 int probe_send_count; 436 bool nullfunc_failed; 437 bool connection_loss; 438 439 struct cfg80211_bss *associated; 440 struct ieee80211_mgd_auth_data *auth_data; 441 struct ieee80211_mgd_assoc_data *assoc_data; 442 443 u8 bssid[ETH_ALEN]; 444 445 u16 aid; 446 447 bool powersave; /* powersave requested for this iface */ 448 bool broken_ap; /* AP is broken -- turn off powersave */ 449 bool have_beacon; 450 u8 dtim_period; 451 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 452 driver_smps_mode; /* smps mode request */ 453 454 struct work_struct request_smps_work; 455 456 unsigned int flags; 457 458 bool csa_waiting_bcn; 459 bool csa_ignored_same_chan; 460 461 bool beacon_crc_valid; 462 u32 beacon_crc; 463 464 bool status_acked; 465 bool status_received; 466 __le16 status_fc; 467 468 enum { 469 IEEE80211_MFP_DISABLED, 470 IEEE80211_MFP_OPTIONAL, 471 IEEE80211_MFP_REQUIRED 472 } mfp; /* management frame protection */ 473 474 /* 475 * Bitmask of enabled u-apsd queues, 476 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 477 * to take effect. 478 */ 479 unsigned int uapsd_queues; 480 481 /* 482 * Maximum number of buffered frames AP can deliver during a 483 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 484 * Needs a new association to take effect. 485 */ 486 unsigned int uapsd_max_sp_len; 487 488 int wmm_last_param_set; 489 490 u8 use_4addr; 491 492 s16 p2p_noa_index; 493 494 struct ewma_beacon_signal ave_beacon_signal; 495 496 /* 497 * Number of Beacon frames used in ave_beacon_signal. This can be used 498 * to avoid generating less reliable cqm events that would be based 499 * only on couple of received frames. 500 */ 501 unsigned int count_beacon_signal; 502 503 /* Number of times beacon loss was invoked. */ 504 unsigned int beacon_loss_count; 505 506 /* 507 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 508 * that triggered a cqm event. 0 indicates that no event has been 509 * generated for the current association. 510 */ 511 int last_cqm_event_signal; 512 513 /* 514 * State variables for keeping track of RSSI of the AP currently 515 * connected to and informing driver when RSSI has gone 516 * below/above a certain threshold. 517 */ 518 int rssi_min_thold, rssi_max_thold; 519 int last_ave_beacon_signal; 520 521 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 522 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 523 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 524 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 525 526 /* TDLS support */ 527 u8 tdls_peer[ETH_ALEN] __aligned(2); 528 struct delayed_work tdls_peer_del_work; 529 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 530 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 531 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 532 bool tdls_chan_switch_prohibited; 533 bool tdls_wider_bw_prohibited; 534 535 /* WMM-AC TSPEC support */ 536 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 537 /* Use a separate work struct so that we can do something here 538 * while the sdata->work is flushing the queues, for example. 539 * otherwise, in scenarios where we hardly get any traffic out 540 * on the BE queue, but there's a lot of VO traffic, we might 541 * get stuck in a downgraded situation and flush takes forever. 542 */ 543 struct delayed_work tx_tspec_wk; 544 }; 545 546 struct ieee80211_if_ibss { 547 struct timer_list timer; 548 struct work_struct csa_connection_drop_work; 549 550 unsigned long last_scan_completed; 551 552 u32 basic_rates; 553 554 bool fixed_bssid; 555 bool fixed_channel; 556 bool privacy; 557 558 bool control_port; 559 bool userspace_handles_dfs; 560 561 u8 bssid[ETH_ALEN] __aligned(2); 562 u8 ssid[IEEE80211_MAX_SSID_LEN]; 563 u8 ssid_len, ie_len; 564 u8 *ie; 565 struct cfg80211_chan_def chandef; 566 567 unsigned long ibss_join_req; 568 /* probe response/beacon for IBSS */ 569 struct beacon_data __rcu *presp; 570 571 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 572 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 573 574 spinlock_t incomplete_lock; 575 struct list_head incomplete_stations; 576 577 enum { 578 IEEE80211_IBSS_MLME_SEARCH, 579 IEEE80211_IBSS_MLME_JOINED, 580 } state; 581 }; 582 583 /** 584 * struct ieee80211_if_ocb - OCB mode state 585 * 586 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 587 * @wrkq_flags: OCB deferred task action 588 * @incomplete_lock: delayed STA insertion lock 589 * @incomplete_stations: list of STAs waiting for delayed insertion 590 * @joined: indication if the interface is connected to an OCB network 591 */ 592 struct ieee80211_if_ocb { 593 struct timer_list housekeeping_timer; 594 unsigned long wrkq_flags; 595 596 spinlock_t incomplete_lock; 597 struct list_head incomplete_stations; 598 599 bool joined; 600 }; 601 602 /** 603 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 604 * 605 * these declarations define the interface, which enables 606 * vendor-specific mesh synchronization 607 * 608 */ 609 struct ieee802_11_elems; 610 struct ieee80211_mesh_sync_ops { 611 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 612 u16 stype, 613 struct ieee80211_mgmt *mgmt, 614 struct ieee802_11_elems *elems, 615 struct ieee80211_rx_status *rx_status); 616 617 /* should be called with beacon_data under RCU read lock */ 618 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 619 struct beacon_data *beacon); 620 /* add other framework functions here */ 621 }; 622 623 struct mesh_csa_settings { 624 struct rcu_head rcu_head; 625 struct cfg80211_csa_settings settings; 626 }; 627 628 struct ieee80211_if_mesh { 629 struct timer_list housekeeping_timer; 630 struct timer_list mesh_path_timer; 631 struct timer_list mesh_path_root_timer; 632 633 unsigned long wrkq_flags; 634 unsigned long mbss_changed; 635 636 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 637 size_t mesh_id_len; 638 /* Active Path Selection Protocol Identifier */ 639 u8 mesh_pp_id; 640 /* Active Path Selection Metric Identifier */ 641 u8 mesh_pm_id; 642 /* Congestion Control Mode Identifier */ 643 u8 mesh_cc_id; 644 /* Synchronization Protocol Identifier */ 645 u8 mesh_sp_id; 646 /* Authentication Protocol Identifier */ 647 u8 mesh_auth_id; 648 /* Local mesh Sequence Number */ 649 u32 sn; 650 /* Last used PREQ ID */ 651 u32 preq_id; 652 atomic_t mpaths; 653 /* Timestamp of last SN update */ 654 unsigned long last_sn_update; 655 /* Time when it's ok to send next PERR */ 656 unsigned long next_perr; 657 /* Timestamp of last PREQ sent */ 658 unsigned long last_preq; 659 struct mesh_rmc *rmc; 660 spinlock_t mesh_preq_queue_lock; 661 struct mesh_preq_queue preq_queue; 662 int preq_queue_len; 663 struct mesh_stats mshstats; 664 struct mesh_config mshcfg; 665 atomic_t estab_plinks; 666 u32 mesh_seqnum; 667 bool accepting_plinks; 668 int num_gates; 669 struct beacon_data __rcu *beacon; 670 const u8 *ie; 671 u8 ie_len; 672 enum { 673 IEEE80211_MESH_SEC_NONE = 0x0, 674 IEEE80211_MESH_SEC_AUTHED = 0x1, 675 IEEE80211_MESH_SEC_SECURED = 0x2, 676 } security; 677 bool user_mpm; 678 /* Extensible Synchronization Framework */ 679 const struct ieee80211_mesh_sync_ops *sync_ops; 680 s64 sync_offset_clockdrift_max; 681 spinlock_t sync_offset_lock; 682 bool adjusting_tbtt; 683 /* mesh power save */ 684 enum nl80211_mesh_power_mode nonpeer_pm; 685 int ps_peers_light_sleep; 686 int ps_peers_deep_sleep; 687 struct ps_data ps; 688 /* Channel Switching Support */ 689 struct mesh_csa_settings __rcu *csa; 690 enum { 691 IEEE80211_MESH_CSA_ROLE_NONE, 692 IEEE80211_MESH_CSA_ROLE_INIT, 693 IEEE80211_MESH_CSA_ROLE_REPEATER, 694 } csa_role; 695 u8 chsw_ttl; 696 u16 pre_value; 697 698 /* offset from skb->data while building IE */ 699 int meshconf_offset; 700 701 struct mesh_table *mesh_paths; 702 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 703 int mesh_paths_generation; 704 int mpp_paths_generation; 705 }; 706 707 #ifdef CONFIG_MAC80211_MESH 708 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 709 do { (msh)->mshstats.name++; } while (0) 710 #else 711 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 712 do { } while (0) 713 #endif 714 715 /** 716 * enum ieee80211_sub_if_data_flags - virtual interface flags 717 * 718 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 719 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 720 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 721 * associated stations and deliver multicast frames both 722 * back to wireless media and to the local net stack. 723 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 724 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 725 */ 726 enum ieee80211_sub_if_data_flags { 727 IEEE80211_SDATA_ALLMULTI = BIT(0), 728 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 729 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 730 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 731 IEEE80211_SDATA_IN_DRIVER = BIT(5), 732 }; 733 734 /** 735 * enum ieee80211_sdata_state_bits - virtual interface state bits 736 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 737 * mirrors netif_running() but is separate for interface type 738 * change handling while the interface is up 739 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 740 * mode, so queues are stopped 741 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 742 * to offchannel, reset when offchannel returns 743 */ 744 enum ieee80211_sdata_state_bits { 745 SDATA_STATE_RUNNING, 746 SDATA_STATE_OFFCHANNEL, 747 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 748 }; 749 750 /** 751 * enum ieee80211_chanctx_mode - channel context configuration mode 752 * 753 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 754 * multiple interfaces 755 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 756 * only by a single interface. This can be used for example for 757 * non-fixed channel IBSS. 758 */ 759 enum ieee80211_chanctx_mode { 760 IEEE80211_CHANCTX_SHARED, 761 IEEE80211_CHANCTX_EXCLUSIVE 762 }; 763 764 /** 765 * enum ieee80211_chanctx_replace_state - channel context replacement state 766 * 767 * This is used for channel context in-place reservations that require channel 768 * context switch/swap. 769 * 770 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 771 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 772 * by a (not yet registered) channel context pointed by %replace_ctx. 773 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 774 * replaces an existing channel context pointed to by %replace_ctx. 775 */ 776 enum ieee80211_chanctx_replace_state { 777 IEEE80211_CHANCTX_REPLACE_NONE, 778 IEEE80211_CHANCTX_WILL_BE_REPLACED, 779 IEEE80211_CHANCTX_REPLACES_OTHER, 780 }; 781 782 struct ieee80211_chanctx { 783 struct list_head list; 784 struct rcu_head rcu_head; 785 786 struct list_head assigned_vifs; 787 struct list_head reserved_vifs; 788 789 enum ieee80211_chanctx_replace_state replace_state; 790 struct ieee80211_chanctx *replace_ctx; 791 792 enum ieee80211_chanctx_mode mode; 793 bool driver_present; 794 795 struct ieee80211_chanctx_conf conf; 796 }; 797 798 struct mac80211_qos_map { 799 struct cfg80211_qos_map qos_map; 800 struct rcu_head rcu_head; 801 }; 802 803 enum txq_info_flags { 804 IEEE80211_TXQ_STOP, 805 IEEE80211_TXQ_AMPDU, 806 IEEE80211_TXQ_NO_AMSDU, 807 }; 808 809 /** 810 * struct txq_info - per tid queue 811 * 812 * @tin: contains packets split into multiple flows 813 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 814 * a fq_flow which is already owned by a different tin 815 * @def_cvars: codel vars for @def_flow 816 */ 817 struct txq_info { 818 struct fq_tin tin; 819 struct fq_flow def_flow; 820 struct codel_vars def_cvars; 821 unsigned long flags; 822 823 /* keep last! */ 824 struct ieee80211_txq txq; 825 }; 826 827 struct ieee80211_sub_if_data { 828 struct list_head list; 829 830 struct wireless_dev wdev; 831 832 /* keys */ 833 struct list_head key_list; 834 835 /* count for keys needing tailroom space allocation */ 836 int crypto_tx_tailroom_needed_cnt; 837 int crypto_tx_tailroom_pending_dec; 838 struct delayed_work dec_tailroom_needed_wk; 839 840 struct net_device *dev; 841 struct ieee80211_local *local; 842 843 unsigned int flags; 844 845 unsigned long state; 846 847 char name[IFNAMSIZ]; 848 849 /* Fragment table for host-based reassembly */ 850 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 851 unsigned int fragment_next; 852 853 /* TID bitmap for NoAck policy */ 854 u16 noack_map; 855 856 /* bit field of ACM bits (BIT(802.1D tag)) */ 857 u8 wmm_acm; 858 859 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 860 struct ieee80211_key __rcu *default_unicast_key; 861 struct ieee80211_key __rcu *default_multicast_key; 862 struct ieee80211_key __rcu *default_mgmt_key; 863 864 u16 sequence_number; 865 __be16 control_port_protocol; 866 bool control_port_no_encrypt; 867 int encrypt_headroom; 868 869 atomic_t num_tx_queued; 870 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 871 struct mac80211_qos_map __rcu *qos_map; 872 873 struct work_struct csa_finalize_work; 874 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 875 struct cfg80211_chan_def csa_chandef; 876 877 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 878 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 879 880 /* context reservation -- protected with chanctx_mtx */ 881 struct ieee80211_chanctx *reserved_chanctx; 882 struct cfg80211_chan_def reserved_chandef; 883 bool reserved_radar_required; 884 bool reserved_ready; 885 886 /* used to reconfigure hardware SM PS */ 887 struct work_struct recalc_smps; 888 889 struct work_struct work; 890 struct sk_buff_head skb_queue; 891 892 u8 needed_rx_chains; 893 enum ieee80211_smps_mode smps_mode; 894 895 int user_power_level; /* in dBm */ 896 int ap_power_level; /* in dBm */ 897 898 bool radar_required; 899 struct delayed_work dfs_cac_timer_work; 900 901 /* 902 * AP this belongs to: self in AP mode and 903 * corresponding AP in VLAN mode, NULL for 904 * all others (might be needed later in IBSS) 905 */ 906 struct ieee80211_if_ap *bss; 907 908 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 909 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 910 911 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 912 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 913 914 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 915 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 916 917 union { 918 struct ieee80211_if_ap ap; 919 struct ieee80211_if_wds wds; 920 struct ieee80211_if_vlan vlan; 921 struct ieee80211_if_managed mgd; 922 struct ieee80211_if_ibss ibss; 923 struct ieee80211_if_mesh mesh; 924 struct ieee80211_if_ocb ocb; 925 u32 mntr_flags; 926 } u; 927 928 #ifdef CONFIG_MAC80211_DEBUGFS 929 struct { 930 struct dentry *subdir_stations; 931 struct dentry *default_unicast_key; 932 struct dentry *default_multicast_key; 933 struct dentry *default_mgmt_key; 934 } debugfs; 935 #endif 936 937 /* must be last, dynamically sized area in this! */ 938 struct ieee80211_vif vif; 939 }; 940 941 static inline 942 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 943 { 944 return container_of(p, struct ieee80211_sub_if_data, vif); 945 } 946 947 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 948 __acquires(&sdata->wdev.mtx) 949 { 950 mutex_lock(&sdata->wdev.mtx); 951 __acquire(&sdata->wdev.mtx); 952 } 953 954 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 955 __releases(&sdata->wdev.mtx) 956 { 957 mutex_unlock(&sdata->wdev.mtx); 958 __release(&sdata->wdev.mtx); 959 } 960 961 #define sdata_dereference(p, sdata) \ 962 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 963 964 static inline void 965 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 966 { 967 lockdep_assert_held(&sdata->wdev.mtx); 968 } 969 970 static inline enum nl80211_band 971 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 972 { 973 enum nl80211_band band = NL80211_BAND_2GHZ; 974 struct ieee80211_chanctx_conf *chanctx_conf; 975 976 rcu_read_lock(); 977 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 978 if (!WARN_ON(!chanctx_conf)) 979 band = chanctx_conf->def.chan->band; 980 rcu_read_unlock(); 981 982 return band; 983 } 984 985 static inline int 986 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 987 { 988 switch (chandef->width) { 989 case NL80211_CHAN_WIDTH_5: 990 return 2; 991 case NL80211_CHAN_WIDTH_10: 992 return 1; 993 default: 994 return 0; 995 } 996 } 997 998 static inline int 999 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1000 { 1001 struct ieee80211_chanctx_conf *chanctx_conf; 1002 int shift = 0; 1003 1004 rcu_read_lock(); 1005 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1006 if (chanctx_conf) 1007 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1008 rcu_read_unlock(); 1009 1010 return shift; 1011 } 1012 1013 struct ieee80211_rx_agg { 1014 u8 addr[ETH_ALEN]; 1015 u16 tid; 1016 }; 1017 1018 enum sdata_queue_type { 1019 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1020 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1021 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1022 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1023 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1024 }; 1025 1026 enum { 1027 IEEE80211_RX_MSG = 1, 1028 IEEE80211_TX_STATUS_MSG = 2, 1029 }; 1030 1031 enum queue_stop_reason { 1032 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1033 IEEE80211_QUEUE_STOP_REASON_PS, 1034 IEEE80211_QUEUE_STOP_REASON_CSA, 1035 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1036 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1037 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1038 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1039 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1040 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1041 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1042 1043 IEEE80211_QUEUE_STOP_REASONS, 1044 }; 1045 1046 #ifdef CONFIG_MAC80211_LEDS 1047 struct tpt_led_trigger { 1048 char name[32]; 1049 const struct ieee80211_tpt_blink *blink_table; 1050 unsigned int blink_table_len; 1051 struct timer_list timer; 1052 unsigned long prev_traffic; 1053 unsigned long tx_bytes, rx_bytes; 1054 unsigned int active, want; 1055 bool running; 1056 }; 1057 #endif 1058 1059 /** 1060 * mac80211 scan flags - currently active scan mode 1061 * 1062 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1063 * well be on the operating channel 1064 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1065 * determine if we are on the operating channel or not 1066 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1067 * channel. This should not interrupt normal traffic. 1068 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1069 * that the scan completed. 1070 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1071 * a scan complete for an aborted scan. 1072 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1073 * cancelled. 1074 */ 1075 enum { 1076 SCAN_SW_SCANNING, 1077 SCAN_HW_SCANNING, 1078 SCAN_ONCHANNEL_SCANNING, 1079 SCAN_COMPLETED, 1080 SCAN_ABORTED, 1081 SCAN_HW_CANCELLED, 1082 }; 1083 1084 /** 1085 * enum mac80211_scan_state - scan state machine states 1086 * 1087 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1088 * determines if we should keep on scanning or switch back to the 1089 * operating channel 1090 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1091 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1092 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1093 * send out data 1094 * @SCAN_RESUME: Resume the scan and scan the next channel 1095 * @SCAN_ABORT: Abort the scan and go back to operating channel 1096 */ 1097 enum mac80211_scan_state { 1098 SCAN_DECISION, 1099 SCAN_SET_CHANNEL, 1100 SCAN_SEND_PROBE, 1101 SCAN_SUSPEND, 1102 SCAN_RESUME, 1103 SCAN_ABORT, 1104 }; 1105 1106 struct ieee80211_local { 1107 /* embed the driver visible part. 1108 * don't cast (use the static inlines below), but we keep 1109 * it first anyway so they become a no-op */ 1110 struct ieee80211_hw hw; 1111 1112 struct fq fq; 1113 struct codel_vars *cvars; 1114 struct codel_params cparams; 1115 struct codel_stats cstats; 1116 1117 const struct ieee80211_ops *ops; 1118 1119 /* 1120 * private workqueue to mac80211. mac80211 makes this accessible 1121 * via ieee80211_queue_work() 1122 */ 1123 struct workqueue_struct *workqueue; 1124 1125 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1126 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1127 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1128 spinlock_t queue_stop_reason_lock; 1129 1130 int open_count; 1131 int monitors, cooked_mntrs; 1132 /* number of interfaces with corresponding FIF_ flags */ 1133 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1134 fif_probe_req; 1135 int probe_req_reg; 1136 unsigned int filter_flags; /* FIF_* */ 1137 1138 bool wiphy_ciphers_allocated; 1139 1140 bool use_chanctx; 1141 1142 /* protects the aggregated multicast list and filter calls */ 1143 spinlock_t filter_lock; 1144 1145 /* used for uploading changed mc list */ 1146 struct work_struct reconfig_filter; 1147 1148 /* aggregated multicast list */ 1149 struct netdev_hw_addr_list mc_list; 1150 1151 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1152 1153 /* 1154 * suspended is true if we finished all the suspend _and_ we have 1155 * not yet come up from resume. This is to be used by mac80211 1156 * to ensure driver sanity during suspend and mac80211's own 1157 * sanity. It can eventually be used for WoW as well. 1158 */ 1159 bool suspended; 1160 1161 /* 1162 * Resuming is true while suspended, but when we're reprogramming the 1163 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1164 * again even though some other parts of the stack are still suspended 1165 * and we still drop received frames to avoid waking the stack. 1166 */ 1167 bool resuming; 1168 1169 /* 1170 * quiescing is true during the suspend process _only_ to 1171 * ease timer cancelling etc. 1172 */ 1173 bool quiescing; 1174 1175 /* device is started */ 1176 bool started; 1177 1178 /* device is during a HW reconfig */ 1179 bool in_reconfig; 1180 1181 /* wowlan is enabled -- don't reconfig on resume */ 1182 bool wowlan; 1183 1184 struct work_struct radar_detected_work; 1185 1186 /* number of RX chains the hardware has */ 1187 u8 rx_chains; 1188 1189 int tx_headroom; /* required headroom for hardware/radiotap */ 1190 1191 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1192 * added to skb_queue will be processed, but frames in 1193 * skb_queue_unreliable may be dropped if the total length of these 1194 * queues increases over the limit. */ 1195 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1196 struct tasklet_struct tasklet; 1197 struct sk_buff_head skb_queue; 1198 struct sk_buff_head skb_queue_unreliable; 1199 1200 spinlock_t rx_path_lock; 1201 1202 /* Station data */ 1203 /* 1204 * The mutex only protects the list, hash table and 1205 * counter, reads are done with RCU. 1206 */ 1207 struct mutex sta_mtx; 1208 spinlock_t tim_lock; 1209 unsigned long num_sta; 1210 struct list_head sta_list; 1211 struct rhashtable sta_hash; 1212 struct timer_list sta_cleanup; 1213 int sta_generation; 1214 1215 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1216 struct tasklet_struct tx_pending_tasklet; 1217 1218 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1219 1220 /* number of interfaces with allmulti RX */ 1221 atomic_t iff_allmultis; 1222 1223 struct rate_control_ref *rate_ctrl; 1224 1225 struct crypto_cipher *wep_tx_tfm; 1226 struct crypto_cipher *wep_rx_tfm; 1227 u32 wep_iv; 1228 1229 /* see iface.c */ 1230 struct list_head interfaces; 1231 struct mutex iflist_mtx; 1232 1233 /* 1234 * Key mutex, protects sdata's key_list and sta_info's 1235 * key pointers (write access, they're RCU.) 1236 */ 1237 struct mutex key_mtx; 1238 1239 /* mutex for scan and work locking */ 1240 struct mutex mtx; 1241 1242 /* Scanning and BSS list */ 1243 unsigned long scanning; 1244 struct cfg80211_ssid scan_ssid; 1245 struct cfg80211_scan_request *int_scan_req; 1246 struct cfg80211_scan_request __rcu *scan_req; 1247 struct ieee80211_scan_request *hw_scan_req; 1248 struct cfg80211_chan_def scan_chandef; 1249 enum nl80211_band hw_scan_band; 1250 int scan_channel_idx; 1251 int scan_ies_len; 1252 int hw_scan_ies_bufsize; 1253 struct cfg80211_scan_info scan_info; 1254 1255 struct work_struct sched_scan_stopped_work; 1256 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1257 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1258 u8 scan_addr[ETH_ALEN]; 1259 1260 unsigned long leave_oper_channel_time; 1261 enum mac80211_scan_state next_scan_state; 1262 struct delayed_work scan_work; 1263 struct ieee80211_sub_if_data __rcu *scan_sdata; 1264 /* For backward compatibility only -- do not use */ 1265 struct cfg80211_chan_def _oper_chandef; 1266 1267 /* Temporary remain-on-channel for off-channel operations */ 1268 struct ieee80211_channel *tmp_channel; 1269 1270 /* channel contexts */ 1271 struct list_head chanctx_list; 1272 struct mutex chanctx_mtx; 1273 1274 #ifdef CONFIG_MAC80211_LEDS 1275 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1276 struct led_trigger tpt_led; 1277 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1278 atomic_t radio_led_active, tpt_led_active; 1279 struct tpt_led_trigger *tpt_led_trigger; 1280 #endif 1281 1282 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1283 /* SNMP counters */ 1284 /* dot11CountersTable */ 1285 u32 dot11TransmittedFragmentCount; 1286 u32 dot11MulticastTransmittedFrameCount; 1287 u32 dot11FailedCount; 1288 u32 dot11RetryCount; 1289 u32 dot11MultipleRetryCount; 1290 u32 dot11FrameDuplicateCount; 1291 u32 dot11ReceivedFragmentCount; 1292 u32 dot11MulticastReceivedFrameCount; 1293 u32 dot11TransmittedFrameCount; 1294 1295 /* TX/RX handler statistics */ 1296 unsigned int tx_handlers_drop; 1297 unsigned int tx_handlers_queued; 1298 unsigned int tx_handlers_drop_wep; 1299 unsigned int tx_handlers_drop_not_assoc; 1300 unsigned int tx_handlers_drop_unauth_port; 1301 unsigned int rx_handlers_drop; 1302 unsigned int rx_handlers_queued; 1303 unsigned int rx_handlers_drop_nullfunc; 1304 unsigned int rx_handlers_drop_defrag; 1305 unsigned int tx_expand_skb_head; 1306 unsigned int tx_expand_skb_head_cloned; 1307 unsigned int rx_expand_skb_head_defrag; 1308 unsigned int rx_handlers_fragments; 1309 unsigned int tx_status_drop; 1310 #define I802_DEBUG_INC(c) (c)++ 1311 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1312 #define I802_DEBUG_INC(c) do { } while (0) 1313 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1314 1315 1316 int total_ps_buffered; /* total number of all buffered unicast and 1317 * multicast packets for power saving stations 1318 */ 1319 1320 bool pspolling; 1321 bool offchannel_ps_enabled; 1322 /* 1323 * PS can only be enabled when we have exactly one managed 1324 * interface (and monitors) in PS, this then points there. 1325 */ 1326 struct ieee80211_sub_if_data *ps_sdata; 1327 struct work_struct dynamic_ps_enable_work; 1328 struct work_struct dynamic_ps_disable_work; 1329 struct timer_list dynamic_ps_timer; 1330 struct notifier_block ifa_notifier; 1331 struct notifier_block ifa6_notifier; 1332 1333 /* 1334 * The dynamic ps timeout configured from user space via WEXT - 1335 * this will override whatever chosen by mac80211 internally. 1336 */ 1337 int dynamic_ps_forced_timeout; 1338 1339 int user_power_level; /* in dBm, for all interfaces */ 1340 1341 enum ieee80211_smps_mode smps_mode; 1342 1343 struct work_struct restart_work; 1344 1345 #ifdef CONFIG_MAC80211_DEBUGFS 1346 struct local_debugfsdentries { 1347 struct dentry *rcdir; 1348 struct dentry *keys; 1349 } debugfs; 1350 #endif 1351 1352 /* 1353 * Remain-on-channel support 1354 */ 1355 struct delayed_work roc_work; 1356 struct list_head roc_list; 1357 struct work_struct hw_roc_start, hw_roc_done; 1358 unsigned long hw_roc_start_time; 1359 u64 roc_cookie_counter; 1360 1361 struct idr ack_status_frames; 1362 spinlock_t ack_status_lock; 1363 1364 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1365 1366 /* virtual monitor interface */ 1367 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1368 struct cfg80211_chan_def monitor_chandef; 1369 1370 /* extended capabilities provided by mac80211 */ 1371 u8 ext_capa[8]; 1372 1373 /* TDLS channel switch */ 1374 struct work_struct tdls_chsw_work; 1375 struct sk_buff_head skb_queue_tdls_chsw; 1376 }; 1377 1378 static inline struct ieee80211_sub_if_data * 1379 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1380 { 1381 return netdev_priv(dev); 1382 } 1383 1384 static inline struct ieee80211_sub_if_data * 1385 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1386 { 1387 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1388 } 1389 1390 /* this struct represents 802.11n's RA/TID combination */ 1391 struct ieee80211_ra_tid { 1392 u8 ra[ETH_ALEN]; 1393 u16 tid; 1394 }; 1395 1396 /* this struct holds the value parsing from channel switch IE */ 1397 struct ieee80211_csa_ie { 1398 struct cfg80211_chan_def chandef; 1399 u8 mode; 1400 u8 count; 1401 u8 ttl; 1402 u16 pre_value; 1403 }; 1404 1405 /* Parsed Information Elements */ 1406 struct ieee802_11_elems { 1407 const u8 *ie_start; 1408 size_t total_len; 1409 1410 /* pointers to IEs */ 1411 const struct ieee80211_tdls_lnkie *lnk_id; 1412 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1413 const u8 *ext_capab; 1414 const u8 *ssid; 1415 const u8 *supp_rates; 1416 const u8 *ds_params; 1417 const struct ieee80211_tim_ie *tim; 1418 const u8 *challenge; 1419 const u8 *rsn; 1420 const u8 *erp_info; 1421 const u8 *ext_supp_rates; 1422 const u8 *wmm_info; 1423 const u8 *wmm_param; 1424 const struct ieee80211_ht_cap *ht_cap_elem; 1425 const struct ieee80211_ht_operation *ht_operation; 1426 const struct ieee80211_vht_cap *vht_cap_elem; 1427 const struct ieee80211_vht_operation *vht_operation; 1428 const struct ieee80211_meshconf_ie *mesh_config; 1429 const u8 *mesh_id; 1430 const u8 *peering; 1431 const __le16 *awake_window; 1432 const u8 *preq; 1433 const u8 *prep; 1434 const u8 *perr; 1435 const struct ieee80211_rann_ie *rann; 1436 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1437 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1438 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1439 const u8 *country_elem; 1440 const u8 *pwr_constr_elem; 1441 const u8 *cisco_dtpc_elem; 1442 const struct ieee80211_timeout_interval_ie *timeout_int; 1443 const u8 *opmode_notif; 1444 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1445 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1446 1447 /* length of them, respectively */ 1448 u8 ext_capab_len; 1449 u8 ssid_len; 1450 u8 supp_rates_len; 1451 u8 tim_len; 1452 u8 challenge_len; 1453 u8 rsn_len; 1454 u8 ext_supp_rates_len; 1455 u8 wmm_info_len; 1456 u8 wmm_param_len; 1457 u8 mesh_id_len; 1458 u8 peering_len; 1459 u8 preq_len; 1460 u8 prep_len; 1461 u8 perr_len; 1462 u8 country_elem_len; 1463 1464 /* whether a parse error occurred while retrieving these elements */ 1465 bool parse_error; 1466 }; 1467 1468 static inline struct ieee80211_local *hw_to_local( 1469 struct ieee80211_hw *hw) 1470 { 1471 return container_of(hw, struct ieee80211_local, hw); 1472 } 1473 1474 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1475 { 1476 return container_of(txq, struct txq_info, txq); 1477 } 1478 1479 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1480 { 1481 return ether_addr_equal(raddr, addr) || 1482 is_broadcast_ether_addr(raddr); 1483 } 1484 1485 static inline bool 1486 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1487 { 1488 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1489 status->flag & RX_FLAG_MACTIME_END); 1490 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1491 return true; 1492 /* can't handle HT/VHT preamble yet */ 1493 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1494 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT))) 1495 return true; 1496 return false; 1497 } 1498 1499 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1500 struct ieee80211_rx_status *status, 1501 unsigned int mpdu_len, 1502 unsigned int mpdu_offset); 1503 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1504 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1505 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1506 u32 changed); 1507 void ieee80211_configure_filter(struct ieee80211_local *local); 1508 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1509 1510 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1511 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1512 u64 *cookie, gfp_t gfp); 1513 1514 void ieee80211_check_fast_rx(struct sta_info *sta); 1515 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1516 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1517 void ieee80211_clear_fast_rx(struct sta_info *sta); 1518 1519 /* STA code */ 1520 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1521 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1522 struct cfg80211_auth_request *req); 1523 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1524 struct cfg80211_assoc_request *req); 1525 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1526 struct cfg80211_deauth_request *req); 1527 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1528 struct cfg80211_disassoc_request *req); 1529 void ieee80211_send_pspoll(struct ieee80211_local *local, 1530 struct ieee80211_sub_if_data *sdata); 1531 void ieee80211_recalc_ps(struct ieee80211_local *local); 1532 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1533 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1534 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1535 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1536 struct sk_buff *skb); 1537 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1538 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1539 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1541 __le16 fc, bool acked); 1542 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1543 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1544 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1545 1546 /* IBSS code */ 1547 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1548 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1549 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1550 const u8 *bssid, const u8 *addr, u32 supp_rates); 1551 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1552 struct cfg80211_ibss_params *params); 1553 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1554 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1555 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1556 struct sk_buff *skb); 1557 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1558 struct cfg80211_csa_settings *csa_settings); 1559 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1560 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1561 1562 /* OCB code */ 1563 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1564 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1565 const u8 *bssid, const u8 *addr, u32 supp_rates); 1566 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1567 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1568 struct ocb_setup *setup); 1569 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1570 1571 /* mesh code */ 1572 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1573 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1574 struct sk_buff *skb); 1575 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1576 struct cfg80211_csa_settings *csa_settings); 1577 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1578 1579 /* scan/BSS handling */ 1580 void ieee80211_scan_work(struct work_struct *work); 1581 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1582 const u8 *ssid, u8 ssid_len, 1583 struct ieee80211_channel **channels, 1584 unsigned int n_channels, 1585 enum nl80211_bss_scan_width scan_width); 1586 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1587 struct cfg80211_scan_request *req); 1588 void ieee80211_scan_cancel(struct ieee80211_local *local); 1589 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1590 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1591 1592 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1593 struct ieee80211_bss * 1594 ieee80211_bss_info_update(struct ieee80211_local *local, 1595 struct ieee80211_rx_status *rx_status, 1596 struct ieee80211_mgmt *mgmt, 1597 size_t len, 1598 struct ieee802_11_elems *elems, 1599 struct ieee80211_channel *channel); 1600 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1601 struct ieee80211_bss *bss); 1602 1603 /* scheduled scan handling */ 1604 int 1605 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1606 struct cfg80211_sched_scan_request *req); 1607 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1608 struct cfg80211_sched_scan_request *req); 1609 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1610 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1611 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1612 1613 /* off-channel/mgmt-tx */ 1614 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1615 void ieee80211_offchannel_return(struct ieee80211_local *local); 1616 void ieee80211_roc_setup(struct ieee80211_local *local); 1617 void ieee80211_start_next_roc(struct ieee80211_local *local); 1618 void ieee80211_roc_purge(struct ieee80211_local *local, 1619 struct ieee80211_sub_if_data *sdata); 1620 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1621 struct ieee80211_channel *chan, 1622 unsigned int duration, u64 *cookie); 1623 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1624 struct wireless_dev *wdev, u64 cookie); 1625 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1626 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1627 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1628 struct wireless_dev *wdev, u64 cookie); 1629 1630 /* channel switch handling */ 1631 void ieee80211_csa_finalize_work(struct work_struct *work); 1632 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1633 struct cfg80211_csa_settings *params); 1634 1635 /* interface handling */ 1636 int ieee80211_iface_init(void); 1637 void ieee80211_iface_exit(void); 1638 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1639 unsigned char name_assign_type, 1640 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1641 struct vif_params *params); 1642 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1643 enum nl80211_iftype type); 1644 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1645 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1646 u32 ieee80211_idle_off(struct ieee80211_local *local); 1647 void ieee80211_recalc_idle(struct ieee80211_local *local); 1648 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1649 const int offset); 1650 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1651 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1652 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1653 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1654 1655 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1656 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1657 bool update_bss); 1658 1659 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1660 { 1661 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1662 } 1663 1664 /* tx handling */ 1665 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1666 void ieee80211_tx_pending(unsigned long data); 1667 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1668 struct net_device *dev); 1669 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1670 struct net_device *dev); 1671 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1672 struct net_device *dev, 1673 u32 info_flags); 1674 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1675 struct sk_buff_head *skbs); 1676 struct sk_buff * 1677 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1678 struct sk_buff *skb, u32 info_flags); 1679 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1680 struct ieee80211_supported_band *sband, 1681 int retry_count, int shift, bool send_to_cooked); 1682 1683 void ieee80211_check_fast_xmit(struct sta_info *sta); 1684 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1685 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1686 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1687 1688 /* HT */ 1689 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1690 struct ieee80211_sta_ht_cap *ht_cap); 1691 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1692 struct ieee80211_supported_band *sband, 1693 const struct ieee80211_ht_cap *ht_cap_ie, 1694 struct sta_info *sta); 1695 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1696 const u8 *da, u16 tid, 1697 u16 initiator, u16 reason_code); 1698 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1699 enum ieee80211_smps_mode smps, const u8 *da, 1700 const u8 *bssid); 1701 void ieee80211_request_smps_ap_work(struct work_struct *work); 1702 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1703 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1704 enum ieee80211_smps_mode smps_mode_new); 1705 1706 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1707 u16 initiator, u16 reason, bool stop); 1708 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1709 u16 initiator, u16 reason, bool stop); 1710 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1711 u8 dialog_token, u16 timeout, 1712 u16 start_seq_num, u16 ba_policy, u16 tid, 1713 u16 buf_size, bool tx, bool auto_seq); 1714 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1715 enum ieee80211_agg_stop_reason reason); 1716 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1717 struct sta_info *sta, 1718 struct ieee80211_mgmt *mgmt, size_t len); 1719 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1720 struct sta_info *sta, 1721 struct ieee80211_mgmt *mgmt, 1722 size_t len); 1723 void ieee80211_process_addba_request(struct ieee80211_local *local, 1724 struct sta_info *sta, 1725 struct ieee80211_mgmt *mgmt, 1726 size_t len); 1727 1728 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1729 enum ieee80211_agg_stop_reason reason); 1730 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1731 enum ieee80211_agg_stop_reason reason); 1732 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1733 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1734 void ieee80211_ba_session_work(struct work_struct *work); 1735 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1736 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1737 1738 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1739 1740 /* VHT */ 1741 void 1742 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1743 struct ieee80211_supported_band *sband, 1744 const struct ieee80211_vht_cap *vht_cap_ie, 1745 struct sta_info *sta); 1746 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1747 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1748 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1749 enum ieee80211_sta_rx_bandwidth 1750 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1751 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1752 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1753 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1754 struct ieee80211_mgmt *mgmt); 1755 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1756 struct sta_info *sta, u8 opmode, 1757 enum nl80211_band band); 1758 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1759 struct sta_info *sta, u8 opmode, 1760 enum nl80211_band band); 1761 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1762 struct ieee80211_sta_vht_cap *vht_cap); 1763 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1764 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1765 1766 /* Spectrum management */ 1767 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1768 struct ieee80211_mgmt *mgmt, 1769 size_t len); 1770 /** 1771 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1772 * @sdata: the sdata of the interface which has received the frame 1773 * @elems: parsed 802.11 elements received with the frame 1774 * @current_band: indicates the current band 1775 * @sta_flags: contains information about own capabilities and restrictions 1776 * to decide which channel switch announcements can be accepted. Only the 1777 * following subset of &enum ieee80211_sta_flags are evaluated: 1778 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1779 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1780 * %IEEE80211_STA_DISABLE_160MHZ. 1781 * @bssid: the currently connected bssid (for reporting) 1782 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1783 All of them will be filled with if success only. 1784 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1785 */ 1786 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1787 struct ieee802_11_elems *elems, 1788 enum nl80211_band current_band, 1789 u32 sta_flags, u8 *bssid, 1790 struct ieee80211_csa_ie *csa_ie); 1791 1792 /* Suspend/resume and hw reconfiguration */ 1793 int ieee80211_reconfig(struct ieee80211_local *local); 1794 void ieee80211_stop_device(struct ieee80211_local *local); 1795 1796 int __ieee80211_suspend(struct ieee80211_hw *hw, 1797 struct cfg80211_wowlan *wowlan); 1798 1799 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1800 { 1801 struct ieee80211_local *local = hw_to_local(hw); 1802 1803 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1804 !test_bit(SCAN_COMPLETED, &local->scanning), 1805 "%s: resume with hardware scan still in progress\n", 1806 wiphy_name(hw->wiphy)); 1807 1808 return ieee80211_reconfig(hw_to_local(hw)); 1809 } 1810 1811 /* utility functions/constants */ 1812 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1813 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1814 int rate, int erp, int short_preamble, 1815 int shift); 1816 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1817 bool bss_notify, bool enable_qos); 1818 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1819 struct sta_info *sta, struct sk_buff *skb); 1820 1821 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1822 struct sk_buff *skb, int tid, 1823 enum nl80211_band band); 1824 1825 static inline void 1826 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1827 struct sk_buff *skb, int tid, 1828 enum nl80211_band band) 1829 { 1830 rcu_read_lock(); 1831 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1832 rcu_read_unlock(); 1833 } 1834 1835 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1836 struct sk_buff *skb, int tid) 1837 { 1838 struct ieee80211_chanctx_conf *chanctx_conf; 1839 1840 rcu_read_lock(); 1841 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1842 if (WARN_ON(!chanctx_conf)) { 1843 rcu_read_unlock(); 1844 kfree_skb(skb); 1845 return; 1846 } 1847 1848 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1849 chanctx_conf->def.chan->band); 1850 rcu_read_unlock(); 1851 } 1852 1853 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1854 struct sk_buff *skb) 1855 { 1856 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1857 ieee80211_tx_skb_tid(sdata, skb, 7); 1858 } 1859 1860 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1861 struct ieee802_11_elems *elems, 1862 u64 filter, u32 crc); 1863 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1864 bool action, 1865 struct ieee802_11_elems *elems) 1866 { 1867 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1868 } 1869 1870 1871 extern const int ieee802_1d_to_ac[8]; 1872 1873 static inline int ieee80211_ac_from_tid(int tid) 1874 { 1875 return ieee802_1d_to_ac[tid & 7]; 1876 } 1877 1878 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1879 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1880 void ieee80211_dynamic_ps_timer(unsigned long data); 1881 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1882 struct ieee80211_sub_if_data *sdata, 1883 bool powersave); 1884 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1885 struct ieee80211_hdr *hdr); 1886 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1887 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1888 1889 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1890 unsigned long queues, 1891 enum queue_stop_reason reason, 1892 bool refcounted); 1893 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1894 struct ieee80211_sub_if_data *sdata, 1895 enum queue_stop_reason reason); 1896 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1897 struct ieee80211_sub_if_data *sdata, 1898 enum queue_stop_reason reason); 1899 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1900 unsigned long queues, 1901 enum queue_stop_reason reason, 1902 bool refcounted); 1903 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1904 enum queue_stop_reason reason, 1905 bool refcounted); 1906 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1907 enum queue_stop_reason reason, 1908 bool refcounted); 1909 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1910 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1911 struct sk_buff *skb); 1912 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1913 struct sk_buff_head *skbs); 1914 void ieee80211_flush_queues(struct ieee80211_local *local, 1915 struct ieee80211_sub_if_data *sdata, bool drop); 1916 void __ieee80211_flush_queues(struct ieee80211_local *local, 1917 struct ieee80211_sub_if_data *sdata, 1918 unsigned int queues, bool drop); 1919 1920 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1921 { 1922 /* 1923 * If quiescing is set, we are racing with __ieee80211_suspend. 1924 * __ieee80211_suspend flushes the workers after setting quiescing, 1925 * and we check quiescing / suspended before enqueing new workers. 1926 * We should abort the worker to avoid the races below. 1927 */ 1928 if (local->quiescing) 1929 return false; 1930 1931 /* 1932 * We might already be suspended if the following scenario occurs: 1933 * __ieee80211_suspend Control path 1934 * 1935 * if (local->quiescing) 1936 * return; 1937 * local->quiescing = true; 1938 * flush_workqueue(); 1939 * queue_work(...); 1940 * local->suspended = true; 1941 * local->quiescing = false; 1942 * worker starts running... 1943 */ 1944 if (local->suspended) 1945 return false; 1946 1947 return true; 1948 } 1949 1950 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 1951 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 1952 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 1953 struct sta_info *sta, 1954 struct txq_info *txq, int tid); 1955 void ieee80211_txq_purge(struct ieee80211_local *local, 1956 struct txq_info *txqi); 1957 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1958 u16 transaction, u16 auth_alg, u16 status, 1959 const u8 *extra, size_t extra_len, const u8 *bssid, 1960 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1961 u32 tx_flags); 1962 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1963 const u8 *bssid, u16 stype, u16 reason, 1964 bool send_frame, u8 *frame_buf); 1965 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1966 size_t buffer_len, 1967 struct ieee80211_scan_ies *ie_desc, 1968 const u8 *ie, size_t ie_len, 1969 u8 bands_used, u32 *rate_masks, 1970 struct cfg80211_chan_def *chandef); 1971 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1972 const u8 *src, const u8 *dst, 1973 u32 ratemask, 1974 struct ieee80211_channel *chan, 1975 const u8 *ssid, size_t ssid_len, 1976 const u8 *ie, size_t ie_len, 1977 bool directed); 1978 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1979 const u8 *src, const u8 *dst, 1980 const u8 *ssid, size_t ssid_len, 1981 const u8 *ie, size_t ie_len, 1982 u32 ratemask, bool directed, u32 tx_flags, 1983 struct ieee80211_channel *channel, bool scan); 1984 1985 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1986 struct ieee802_11_elems *elems, 1987 enum nl80211_band band, u32 *basic_rates); 1988 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1989 enum ieee80211_smps_mode smps_mode); 1990 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1991 enum ieee80211_smps_mode smps_mode); 1992 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1993 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1994 1995 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1996 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1997 u16 cap); 1998 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1999 const struct cfg80211_chan_def *chandef, 2000 u16 prot_mode, bool rifs_mode); 2001 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2002 u32 cap); 2003 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2004 const struct cfg80211_chan_def *chandef); 2005 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2006 const struct ieee80211_supported_band *sband, 2007 const u8 *srates, int srates_len, u32 *rates); 2008 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2009 struct sk_buff *skb, bool need_basic, 2010 enum nl80211_band band); 2011 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2012 struct sk_buff *skb, bool need_basic, 2013 enum nl80211_band band); 2014 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2015 2016 /* channel management */ 2017 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2018 struct cfg80211_chan_def *chandef); 2019 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2020 struct cfg80211_chan_def *chandef); 2021 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2022 2023 int __must_check 2024 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2025 const struct cfg80211_chan_def *chandef, 2026 enum ieee80211_chanctx_mode mode); 2027 int __must_check 2028 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2029 const struct cfg80211_chan_def *chandef, 2030 enum ieee80211_chanctx_mode mode, 2031 bool radar_required); 2032 int __must_check 2033 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2034 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2035 2036 int __must_check 2037 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2038 const struct cfg80211_chan_def *chandef, 2039 u32 *changed); 2040 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2041 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2042 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2043 bool clear); 2044 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2045 struct ieee80211_chanctx *ctx); 2046 2047 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2048 struct ieee80211_chanctx *chanctx); 2049 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2050 struct ieee80211_chanctx *ctx); 2051 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2052 2053 void ieee80211_dfs_cac_timer(unsigned long data); 2054 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2055 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2056 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2057 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2058 struct cfg80211_csa_settings *csa_settings); 2059 2060 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2061 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2062 const struct ieee80211_cipher_scheme * 2063 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2064 enum nl80211_iftype iftype); 2065 int ieee80211_cs_headroom(struct ieee80211_local *local, 2066 struct cfg80211_crypto_settings *crypto, 2067 enum nl80211_iftype iftype); 2068 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2069 struct ieee80211_sub_if_data *sdata); 2070 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2071 const struct cfg80211_chan_def *chandef, 2072 enum ieee80211_chanctx_mode chanmode, 2073 u8 radar_detect); 2074 int ieee80211_max_num_channels(struct ieee80211_local *local); 2075 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2076 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2077 struct ieee80211_chanctx *ctx); 2078 2079 /* TDLS */ 2080 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2081 const u8 *peer, u8 action_code, u8 dialog_token, 2082 u16 status_code, u32 peer_capability, 2083 bool initiator, const u8 *extra_ies, 2084 size_t extra_ies_len); 2085 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2086 const u8 *peer, enum nl80211_tdls_operation oper); 2087 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2088 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2089 const u8 *addr, u8 oper_class, 2090 struct cfg80211_chan_def *chandef); 2091 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2092 struct net_device *dev, 2093 const u8 *addr); 2094 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2095 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2096 2097 extern const struct ethtool_ops ieee80211_ethtool_ops; 2098 2099 #ifdef CONFIG_MAC80211_NOINLINE 2100 #define debug_noinline noinline 2101 #else 2102 #define debug_noinline 2103 #endif 2104 2105 #endif /* IEEE80211_I_H */ 2106