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 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 88 89 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 90 91 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 92 93 struct ieee80211_fragment_entry { 94 struct sk_buff_head skb_list; 95 unsigned long first_frag_time; 96 u16 seq; 97 u16 extra_len; 98 u16 last_frag; 99 u8 rx_queue; 100 bool check_sequential_pn; /* needed for CCMP/GCMP */ 101 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 102 }; 103 104 105 struct ieee80211_bss { 106 u32 device_ts_beacon, device_ts_presp; 107 108 bool wmm_used; 109 bool uapsd_supported; 110 111 #define IEEE80211_MAX_SUPP_RATES 32 112 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 113 size_t supp_rates_len; 114 struct ieee80211_rate *beacon_rate; 115 116 /* 117 * During association, we save an ERP value from a probe response so 118 * that we can feed ERP info to the driver when handling the 119 * association completes. these fields probably won't be up-to-date 120 * otherwise, you probably don't want to use them. 121 */ 122 bool has_erp_value; 123 u8 erp_value; 124 125 /* Keep track of the corruption of the last beacon/probe response. */ 126 u8 corrupt_data; 127 128 /* Keep track of what bits of information we have valid info for. */ 129 u8 valid_data; 130 }; 131 132 /** 133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 136 * 137 * These are bss flags that are attached to a bss in the 138 * @corrupt_data field of &struct ieee80211_bss. 139 */ 140 enum ieee80211_bss_corrupt_data_flags { 141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 143 }; 144 145 /** 146 * enum ieee80211_valid_data_flags - BSS valid data flags 147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 150 * 151 * These are bss flags that are attached to a bss in the 152 * @valid_data field of &struct ieee80211_bss. They show which parts 153 * of the data structure were received as a result of an un-corrupted 154 * beacon/probe response. 155 */ 156 enum ieee80211_bss_valid_data_flags { 157 IEEE80211_BSS_VALID_WMM = BIT(1), 158 IEEE80211_BSS_VALID_RATES = BIT(2), 159 IEEE80211_BSS_VALID_ERP = BIT(3) 160 }; 161 162 typedef unsigned __bitwise ieee80211_tx_result; 163 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 164 #define TX_DROP ((__force ieee80211_tx_result) 1u) 165 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 166 167 #define IEEE80211_TX_UNICAST BIT(1) 168 #define IEEE80211_TX_PS_BUFFERED BIT(2) 169 170 struct ieee80211_tx_data { 171 struct sk_buff *skb; 172 struct sk_buff_head skbs; 173 struct ieee80211_local *local; 174 struct ieee80211_sub_if_data *sdata; 175 struct sta_info *sta; 176 struct ieee80211_key *key; 177 struct ieee80211_tx_rate rate; 178 179 unsigned int flags; 180 }; 181 182 183 typedef unsigned __bitwise ieee80211_rx_result; 184 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 185 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 186 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 187 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 188 189 /** 190 * enum ieee80211_packet_rx_flags - packet RX flags 191 * @IEEE80211_RX_AMSDU: a-MSDU packet 192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 194 * 195 * These are per-frame flags that are attached to a frame in the 196 * @rx_flags field of &struct ieee80211_rx_status. 197 */ 198 enum ieee80211_packet_rx_flags { 199 IEEE80211_RX_AMSDU = BIT(3), 200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 202 }; 203 204 /** 205 * enum ieee80211_rx_flags - RX data flags 206 * 207 * @IEEE80211_RX_CMNTR: received on cooked monitor already 208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 209 * to cfg80211_report_obss_beacon(). 210 * 211 * These flags are used across handling multiple interfaces 212 * for a single frame. 213 */ 214 enum ieee80211_rx_flags { 215 IEEE80211_RX_CMNTR = BIT(0), 216 IEEE80211_RX_BEACON_REPORTED = BIT(1), 217 }; 218 219 struct ieee80211_rx_data { 220 struct napi_struct *napi; 221 struct sk_buff *skb; 222 struct ieee80211_local *local; 223 struct ieee80211_sub_if_data *sdata; 224 struct sta_info *sta; 225 struct ieee80211_key *key; 226 227 unsigned int flags; 228 229 /* 230 * Index into sequence numbers array, 0..16 231 * since the last (16) is used for non-QoS, 232 * will be 16 on non-QoS frames. 233 */ 234 int seqno_idx; 235 236 /* 237 * Index into the security IV/PN arrays, 0..16 238 * since the last (16) is used for CCMP-encrypted 239 * management frames, will be set to 16 on mgmt 240 * frames and 0 on non-QoS frames. 241 */ 242 int security_idx; 243 244 u32 tkip_iv32; 245 u16 tkip_iv16; 246 }; 247 248 struct ieee80211_csa_settings { 249 const u16 *counter_offsets_beacon; 250 const u16 *counter_offsets_presp; 251 252 int n_counter_offsets_beacon; 253 int n_counter_offsets_presp; 254 255 u8 count; 256 }; 257 258 struct beacon_data { 259 u8 *head, *tail; 260 int head_len, tail_len; 261 struct ieee80211_meshconf_ie *meshconf; 262 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 263 u8 csa_current_counter; 264 struct rcu_head rcu_head; 265 }; 266 267 struct probe_resp { 268 struct rcu_head rcu_head; 269 int len; 270 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 271 u8 data[0]; 272 }; 273 274 struct ps_data { 275 /* yes, this looks ugly, but guarantees that we can later use 276 * bitmap_empty :) 277 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 278 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 279 __aligned(__alignof__(unsigned long)); 280 struct sk_buff_head bc_buf; 281 atomic_t num_sta_ps; /* number of stations in PS mode */ 282 int dtim_count; 283 bool dtim_bc_mc; 284 }; 285 286 struct ieee80211_if_ap { 287 struct beacon_data __rcu *beacon; 288 struct probe_resp __rcu *probe_resp; 289 290 /* to be used after channel switch. */ 291 struct cfg80211_beacon_data *next_beacon; 292 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 293 294 struct ps_data ps; 295 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 296 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 297 driver_smps_mode; /* smps mode request */ 298 299 struct work_struct request_smps_work; 300 bool multicast_to_unicast; 301 }; 302 303 struct ieee80211_if_wds { 304 struct sta_info *sta; 305 u8 remote_addr[ETH_ALEN]; 306 }; 307 308 struct ieee80211_if_vlan { 309 struct list_head list; /* write-protected with RTNL and local->mtx */ 310 311 /* used for all tx if the VLAN is configured to 4-addr mode */ 312 struct sta_info __rcu *sta; 313 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 314 }; 315 316 struct mesh_stats { 317 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 318 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 319 __u32 fwded_frames; /* Mesh total forwarded frames */ 320 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 321 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 322 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 323 }; 324 325 #define PREQ_Q_F_START 0x1 326 #define PREQ_Q_F_REFRESH 0x2 327 struct mesh_preq_queue { 328 struct list_head list; 329 u8 dst[ETH_ALEN]; 330 u8 flags; 331 }; 332 333 struct ieee80211_roc_work { 334 struct list_head list; 335 336 struct ieee80211_sub_if_data *sdata; 337 338 struct ieee80211_channel *chan; 339 340 bool started, abort, hw_begun, notified; 341 bool on_channel; 342 343 unsigned long start_time; 344 345 u32 duration, req_duration; 346 struct sk_buff *frame; 347 u64 cookie, mgmt_tx_cookie; 348 enum ieee80211_roc_type type; 349 }; 350 351 /* flags used in struct ieee80211_if_managed.flags */ 352 enum ieee80211_sta_flags { 353 IEEE80211_STA_CONNECTION_POLL = BIT(1), 354 IEEE80211_STA_CONTROL_PORT = BIT(2), 355 IEEE80211_STA_DISABLE_HT = BIT(4), 356 IEEE80211_STA_MFP_ENABLED = BIT(6), 357 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 358 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 359 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 360 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 361 IEEE80211_STA_DISABLE_VHT = BIT(11), 362 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 363 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 364 IEEE80211_STA_DISABLE_WMM = BIT(14), 365 IEEE80211_STA_ENABLE_RRM = BIT(15), 366 }; 367 368 struct ieee80211_mgd_auth_data { 369 struct cfg80211_bss *bss; 370 unsigned long timeout; 371 int tries; 372 u16 algorithm, expected_transaction; 373 374 u8 key[WLAN_KEY_LEN_WEP104]; 375 u8 key_len, key_idx; 376 bool done; 377 bool timeout_started; 378 379 u16 sae_trans, sae_status; 380 size_t data_len; 381 u8 data[]; 382 }; 383 384 struct ieee80211_mgd_assoc_data { 385 struct cfg80211_bss *bss; 386 const u8 *supp_rates; 387 388 unsigned long timeout; 389 int tries; 390 391 u16 capability; 392 u8 prev_bssid[ETH_ALEN]; 393 u8 ssid[IEEE80211_MAX_SSID_LEN]; 394 u8 ssid_len; 395 u8 supp_rates_len; 396 bool wmm, uapsd; 397 bool need_beacon; 398 bool synced; 399 bool timeout_started; 400 401 u8 ap_ht_param; 402 403 struct ieee80211_vht_cap ap_vht_cap; 404 405 u8 fils_nonces[2 * FILS_NONCE_LEN]; 406 u8 fils_kek[FILS_MAX_KEK_LEN]; 407 size_t fils_kek_len; 408 409 size_t ie_len; 410 u8 ie[]; 411 }; 412 413 struct ieee80211_sta_tx_tspec { 414 /* timestamp of the first packet in the time slice */ 415 unsigned long time_slice_start; 416 417 u32 admitted_time; /* in usecs, unlike over the air */ 418 u8 tsid; 419 s8 up; /* signed to be able to invalidate with -1 during teardown */ 420 421 /* consumed TX time in microseconds in the time slice */ 422 u32 consumed_tx_time; 423 enum { 424 TX_TSPEC_ACTION_NONE = 0, 425 TX_TSPEC_ACTION_DOWNGRADE, 426 TX_TSPEC_ACTION_STOP_DOWNGRADE, 427 } action; 428 bool downgraded; 429 }; 430 431 DECLARE_EWMA(beacon_signal, 4, 4) 432 433 struct ieee80211_if_managed { 434 struct timer_list timer; 435 struct timer_list conn_mon_timer; 436 struct timer_list bcn_mon_timer; 437 struct timer_list chswitch_timer; 438 struct work_struct monitor_work; 439 struct work_struct chswitch_work; 440 struct work_struct beacon_connection_loss_work; 441 struct work_struct csa_connection_drop_work; 442 443 unsigned long beacon_timeout; 444 unsigned long probe_timeout; 445 int probe_send_count; 446 bool nullfunc_failed; 447 bool connection_loss; 448 449 struct cfg80211_bss *associated; 450 struct ieee80211_mgd_auth_data *auth_data; 451 struct ieee80211_mgd_assoc_data *assoc_data; 452 453 u8 bssid[ETH_ALEN] __aligned(2); 454 455 u16 aid; 456 457 bool powersave; /* powersave requested for this iface */ 458 bool broken_ap; /* AP is broken -- turn off powersave */ 459 bool have_beacon; 460 u8 dtim_period; 461 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 462 driver_smps_mode; /* smps mode request */ 463 464 struct work_struct request_smps_work; 465 466 unsigned int flags; 467 468 bool csa_waiting_bcn; 469 bool csa_ignored_same_chan; 470 471 bool beacon_crc_valid; 472 u32 beacon_crc; 473 474 bool status_acked; 475 bool status_received; 476 __le16 status_fc; 477 478 enum { 479 IEEE80211_MFP_DISABLED, 480 IEEE80211_MFP_OPTIONAL, 481 IEEE80211_MFP_REQUIRED 482 } mfp; /* management frame protection */ 483 484 /* 485 * Bitmask of enabled u-apsd queues, 486 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 487 * to take effect. 488 */ 489 unsigned int uapsd_queues; 490 491 /* 492 * Maximum number of buffered frames AP can deliver during a 493 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 494 * Needs a new association to take effect. 495 */ 496 unsigned int uapsd_max_sp_len; 497 498 int wmm_last_param_set; 499 500 u8 use_4addr; 501 502 s16 p2p_noa_index; 503 504 struct ewma_beacon_signal ave_beacon_signal; 505 506 /* 507 * Number of Beacon frames used in ave_beacon_signal. This can be used 508 * to avoid generating less reliable cqm events that would be based 509 * only on couple of received frames. 510 */ 511 unsigned int count_beacon_signal; 512 513 /* Number of times beacon loss was invoked. */ 514 unsigned int beacon_loss_count; 515 516 /* 517 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 518 * that triggered a cqm event. 0 indicates that no event has been 519 * generated for the current association. 520 */ 521 int last_cqm_event_signal; 522 523 /* 524 * State variables for keeping track of RSSI of the AP currently 525 * connected to and informing driver when RSSI has gone 526 * below/above a certain threshold. 527 */ 528 int rssi_min_thold, rssi_max_thold; 529 int last_ave_beacon_signal; 530 531 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 532 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 533 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 534 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 535 536 /* TDLS support */ 537 u8 tdls_peer[ETH_ALEN] __aligned(2); 538 struct delayed_work tdls_peer_del_work; 539 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 540 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 541 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 542 bool tdls_chan_switch_prohibited; 543 bool tdls_wider_bw_prohibited; 544 545 /* WMM-AC TSPEC support */ 546 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 547 /* Use a separate work struct so that we can do something here 548 * while the sdata->work is flushing the queues, for example. 549 * otherwise, in scenarios where we hardly get any traffic out 550 * on the BE queue, but there's a lot of VO traffic, we might 551 * get stuck in a downgraded situation and flush takes forever. 552 */ 553 struct delayed_work tx_tspec_wk; 554 }; 555 556 struct ieee80211_if_ibss { 557 struct timer_list timer; 558 struct work_struct csa_connection_drop_work; 559 560 unsigned long last_scan_completed; 561 562 u32 basic_rates; 563 564 bool fixed_bssid; 565 bool fixed_channel; 566 bool privacy; 567 568 bool control_port; 569 bool userspace_handles_dfs; 570 571 u8 bssid[ETH_ALEN] __aligned(2); 572 u8 ssid[IEEE80211_MAX_SSID_LEN]; 573 u8 ssid_len, ie_len; 574 u8 *ie; 575 struct cfg80211_chan_def chandef; 576 577 unsigned long ibss_join_req; 578 /* probe response/beacon for IBSS */ 579 struct beacon_data __rcu *presp; 580 581 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 582 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 583 584 spinlock_t incomplete_lock; 585 struct list_head incomplete_stations; 586 587 enum { 588 IEEE80211_IBSS_MLME_SEARCH, 589 IEEE80211_IBSS_MLME_JOINED, 590 } state; 591 }; 592 593 /** 594 * struct ieee80211_if_ocb - OCB mode state 595 * 596 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 597 * @wrkq_flags: OCB deferred task action 598 * @incomplete_lock: delayed STA insertion lock 599 * @incomplete_stations: list of STAs waiting for delayed insertion 600 * @joined: indication if the interface is connected to an OCB network 601 */ 602 struct ieee80211_if_ocb { 603 struct timer_list housekeeping_timer; 604 unsigned long wrkq_flags; 605 606 spinlock_t incomplete_lock; 607 struct list_head incomplete_stations; 608 609 bool joined; 610 }; 611 612 /** 613 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 614 * 615 * these declarations define the interface, which enables 616 * vendor-specific mesh synchronization 617 * 618 */ 619 struct ieee802_11_elems; 620 struct ieee80211_mesh_sync_ops { 621 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 622 u16 stype, 623 struct ieee80211_mgmt *mgmt, 624 struct ieee802_11_elems *elems, 625 struct ieee80211_rx_status *rx_status); 626 627 /* should be called with beacon_data under RCU read lock */ 628 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 629 struct beacon_data *beacon); 630 /* add other framework functions here */ 631 }; 632 633 struct mesh_csa_settings { 634 struct rcu_head rcu_head; 635 struct cfg80211_csa_settings settings; 636 }; 637 638 struct ieee80211_if_mesh { 639 struct timer_list housekeeping_timer; 640 struct timer_list mesh_path_timer; 641 struct timer_list mesh_path_root_timer; 642 643 unsigned long wrkq_flags; 644 unsigned long mbss_changed; 645 646 bool userspace_handles_dfs; 647 648 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 649 size_t mesh_id_len; 650 /* Active Path Selection Protocol Identifier */ 651 u8 mesh_pp_id; 652 /* Active Path Selection Metric Identifier */ 653 u8 mesh_pm_id; 654 /* Congestion Control Mode Identifier */ 655 u8 mesh_cc_id; 656 /* Synchronization Protocol Identifier */ 657 u8 mesh_sp_id; 658 /* Authentication Protocol Identifier */ 659 u8 mesh_auth_id; 660 /* Local mesh Sequence Number */ 661 u32 sn; 662 /* Last used PREQ ID */ 663 u32 preq_id; 664 atomic_t mpaths; 665 /* Timestamp of last SN update */ 666 unsigned long last_sn_update; 667 /* Time when it's ok to send next PERR */ 668 unsigned long next_perr; 669 /* Timestamp of last PREQ sent */ 670 unsigned long last_preq; 671 struct mesh_rmc *rmc; 672 spinlock_t mesh_preq_queue_lock; 673 struct mesh_preq_queue preq_queue; 674 int preq_queue_len; 675 struct mesh_stats mshstats; 676 struct mesh_config mshcfg; 677 atomic_t estab_plinks; 678 u32 mesh_seqnum; 679 bool accepting_plinks; 680 int num_gates; 681 struct beacon_data __rcu *beacon; 682 const u8 *ie; 683 u8 ie_len; 684 enum { 685 IEEE80211_MESH_SEC_NONE = 0x0, 686 IEEE80211_MESH_SEC_AUTHED = 0x1, 687 IEEE80211_MESH_SEC_SECURED = 0x2, 688 } security; 689 bool user_mpm; 690 /* Extensible Synchronization Framework */ 691 const struct ieee80211_mesh_sync_ops *sync_ops; 692 s64 sync_offset_clockdrift_max; 693 spinlock_t sync_offset_lock; 694 /* mesh power save */ 695 enum nl80211_mesh_power_mode nonpeer_pm; 696 int ps_peers_light_sleep; 697 int ps_peers_deep_sleep; 698 struct ps_data ps; 699 /* Channel Switching Support */ 700 struct mesh_csa_settings __rcu *csa; 701 enum { 702 IEEE80211_MESH_CSA_ROLE_NONE, 703 IEEE80211_MESH_CSA_ROLE_INIT, 704 IEEE80211_MESH_CSA_ROLE_REPEATER, 705 } csa_role; 706 u8 chsw_ttl; 707 u16 pre_value; 708 709 /* offset from skb->data while building IE */ 710 int meshconf_offset; 711 712 struct mesh_table *mesh_paths; 713 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 714 int mesh_paths_generation; 715 int mpp_paths_generation; 716 }; 717 718 #ifdef CONFIG_MAC80211_MESH 719 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 720 do { (msh)->mshstats.name++; } while (0) 721 #else 722 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 723 do { } while (0) 724 #endif 725 726 /** 727 * enum ieee80211_sub_if_data_flags - virtual interface flags 728 * 729 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 730 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 731 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 732 * associated stations and deliver multicast frames both 733 * back to wireless media and to the local net stack. 734 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 735 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 736 */ 737 enum ieee80211_sub_if_data_flags { 738 IEEE80211_SDATA_ALLMULTI = BIT(0), 739 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 740 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 741 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 742 IEEE80211_SDATA_IN_DRIVER = BIT(5), 743 }; 744 745 /** 746 * enum ieee80211_sdata_state_bits - virtual interface state bits 747 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 748 * mirrors netif_running() but is separate for interface type 749 * change handling while the interface is up 750 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 751 * mode, so queues are stopped 752 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 753 * to offchannel, reset when offchannel returns 754 */ 755 enum ieee80211_sdata_state_bits { 756 SDATA_STATE_RUNNING, 757 SDATA_STATE_OFFCHANNEL, 758 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 759 }; 760 761 /** 762 * enum ieee80211_chanctx_mode - channel context configuration mode 763 * 764 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 765 * multiple interfaces 766 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 767 * only by a single interface. This can be used for example for 768 * non-fixed channel IBSS. 769 */ 770 enum ieee80211_chanctx_mode { 771 IEEE80211_CHANCTX_SHARED, 772 IEEE80211_CHANCTX_EXCLUSIVE 773 }; 774 775 /** 776 * enum ieee80211_chanctx_replace_state - channel context replacement state 777 * 778 * This is used for channel context in-place reservations that require channel 779 * context switch/swap. 780 * 781 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 782 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 783 * by a (not yet registered) channel context pointed by %replace_ctx. 784 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 785 * replaces an existing channel context pointed to by %replace_ctx. 786 */ 787 enum ieee80211_chanctx_replace_state { 788 IEEE80211_CHANCTX_REPLACE_NONE, 789 IEEE80211_CHANCTX_WILL_BE_REPLACED, 790 IEEE80211_CHANCTX_REPLACES_OTHER, 791 }; 792 793 struct ieee80211_chanctx { 794 struct list_head list; 795 struct rcu_head rcu_head; 796 797 struct list_head assigned_vifs; 798 struct list_head reserved_vifs; 799 800 enum ieee80211_chanctx_replace_state replace_state; 801 struct ieee80211_chanctx *replace_ctx; 802 803 enum ieee80211_chanctx_mode mode; 804 bool driver_present; 805 806 struct ieee80211_chanctx_conf conf; 807 }; 808 809 struct mac80211_qos_map { 810 struct cfg80211_qos_map qos_map; 811 struct rcu_head rcu_head; 812 }; 813 814 enum txq_info_flags { 815 IEEE80211_TXQ_STOP, 816 IEEE80211_TXQ_AMPDU, 817 IEEE80211_TXQ_NO_AMSDU, 818 }; 819 820 /** 821 * struct txq_info - per tid queue 822 * 823 * @tin: contains packets split into multiple flows 824 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 825 * a fq_flow which is already owned by a different tin 826 * @def_cvars: codel vars for @def_flow 827 * @frags: used to keep fragments created after dequeue 828 */ 829 struct txq_info { 830 struct fq_tin tin; 831 struct fq_flow def_flow; 832 struct codel_vars def_cvars; 833 struct codel_stats cstats; 834 struct sk_buff_head frags; 835 unsigned long flags; 836 837 /* keep last! */ 838 struct ieee80211_txq txq; 839 }; 840 841 struct ieee80211_if_mntr { 842 u32 flags; 843 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 844 845 struct list_head list; 846 }; 847 848 /** 849 * struct ieee80211_if_nan - NAN state 850 * 851 * @conf: current NAN configuration 852 * @func_ids: a bitmap of available instance_id's 853 */ 854 struct ieee80211_if_nan { 855 struct cfg80211_nan_conf conf; 856 857 /* protects function_inst_ids */ 858 spinlock_t func_lock; 859 struct idr function_inst_ids; 860 }; 861 862 struct ieee80211_sub_if_data { 863 struct list_head list; 864 865 struct wireless_dev wdev; 866 867 /* keys */ 868 struct list_head key_list; 869 870 /* count for keys needing tailroom space allocation */ 871 int crypto_tx_tailroom_needed_cnt; 872 int crypto_tx_tailroom_pending_dec; 873 struct delayed_work dec_tailroom_needed_wk; 874 875 struct net_device *dev; 876 struct ieee80211_local *local; 877 878 unsigned int flags; 879 880 unsigned long state; 881 882 char name[IFNAMSIZ]; 883 884 /* Fragment table for host-based reassembly */ 885 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 886 unsigned int fragment_next; 887 888 /* TID bitmap for NoAck policy */ 889 u16 noack_map; 890 891 /* bit field of ACM bits (BIT(802.1D tag)) */ 892 u8 wmm_acm; 893 894 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 895 struct ieee80211_key __rcu *default_unicast_key; 896 struct ieee80211_key __rcu *default_multicast_key; 897 struct ieee80211_key __rcu *default_mgmt_key; 898 899 u16 sequence_number; 900 __be16 control_port_protocol; 901 bool control_port_no_encrypt; 902 int encrypt_headroom; 903 904 atomic_t num_tx_queued; 905 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 906 struct mac80211_qos_map __rcu *qos_map; 907 908 struct work_struct csa_finalize_work; 909 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 910 struct cfg80211_chan_def csa_chandef; 911 912 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 913 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 914 915 /* context reservation -- protected with chanctx_mtx */ 916 struct ieee80211_chanctx *reserved_chanctx; 917 struct cfg80211_chan_def reserved_chandef; 918 bool reserved_radar_required; 919 bool reserved_ready; 920 921 /* used to reconfigure hardware SM PS */ 922 struct work_struct recalc_smps; 923 924 struct work_struct work; 925 struct sk_buff_head skb_queue; 926 927 u8 needed_rx_chains; 928 enum ieee80211_smps_mode smps_mode; 929 930 int user_power_level; /* in dBm */ 931 int ap_power_level; /* in dBm */ 932 933 bool radar_required; 934 struct delayed_work dfs_cac_timer_work; 935 936 /* 937 * AP this belongs to: self in AP mode and 938 * corresponding AP in VLAN mode, NULL for 939 * all others (might be needed later in IBSS) 940 */ 941 struct ieee80211_if_ap *bss; 942 943 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 944 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 945 946 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 947 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 948 949 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 950 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 951 952 union { 953 struct ieee80211_if_ap ap; 954 struct ieee80211_if_wds wds; 955 struct ieee80211_if_vlan vlan; 956 struct ieee80211_if_managed mgd; 957 struct ieee80211_if_ibss ibss; 958 struct ieee80211_if_mesh mesh; 959 struct ieee80211_if_ocb ocb; 960 struct ieee80211_if_mntr mntr; 961 struct ieee80211_if_nan nan; 962 } u; 963 964 #ifdef CONFIG_MAC80211_DEBUGFS 965 struct { 966 struct dentry *subdir_stations; 967 struct dentry *default_unicast_key; 968 struct dentry *default_multicast_key; 969 struct dentry *default_mgmt_key; 970 } debugfs; 971 #endif 972 973 /* must be last, dynamically sized area in this! */ 974 struct ieee80211_vif vif; 975 }; 976 977 static inline 978 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 979 { 980 return container_of(p, struct ieee80211_sub_if_data, vif); 981 } 982 983 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 984 __acquires(&sdata->wdev.mtx) 985 { 986 mutex_lock(&sdata->wdev.mtx); 987 __acquire(&sdata->wdev.mtx); 988 } 989 990 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 991 __releases(&sdata->wdev.mtx) 992 { 993 mutex_unlock(&sdata->wdev.mtx); 994 __release(&sdata->wdev.mtx); 995 } 996 997 #define sdata_dereference(p, sdata) \ 998 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 999 1000 static inline void 1001 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1002 { 1003 lockdep_assert_held(&sdata->wdev.mtx); 1004 } 1005 1006 static inline int 1007 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1008 { 1009 switch (chandef->width) { 1010 case NL80211_CHAN_WIDTH_5: 1011 return 2; 1012 case NL80211_CHAN_WIDTH_10: 1013 return 1; 1014 default: 1015 return 0; 1016 } 1017 } 1018 1019 static inline int 1020 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1021 { 1022 struct ieee80211_chanctx_conf *chanctx_conf; 1023 int shift = 0; 1024 1025 rcu_read_lock(); 1026 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1027 if (chanctx_conf) 1028 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1029 rcu_read_unlock(); 1030 1031 return shift; 1032 } 1033 1034 enum { 1035 IEEE80211_RX_MSG = 1, 1036 IEEE80211_TX_STATUS_MSG = 2, 1037 }; 1038 1039 enum queue_stop_reason { 1040 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1041 IEEE80211_QUEUE_STOP_REASON_PS, 1042 IEEE80211_QUEUE_STOP_REASON_CSA, 1043 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1044 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1045 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1046 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1047 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1048 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1049 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1050 1051 IEEE80211_QUEUE_STOP_REASONS, 1052 }; 1053 1054 #ifdef CONFIG_MAC80211_LEDS 1055 struct tpt_led_trigger { 1056 char name[32]; 1057 const struct ieee80211_tpt_blink *blink_table; 1058 unsigned int blink_table_len; 1059 struct timer_list timer; 1060 unsigned long prev_traffic; 1061 unsigned long tx_bytes, rx_bytes; 1062 unsigned int active, want; 1063 bool running; 1064 }; 1065 #endif 1066 1067 /** 1068 * mac80211 scan flags - currently active scan mode 1069 * 1070 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1071 * well be on the operating channel 1072 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1073 * determine if we are on the operating channel or not 1074 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1075 * channel. This should not interrupt normal traffic. 1076 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1077 * that the scan completed. 1078 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1079 * a scan complete for an aborted scan. 1080 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1081 * cancelled. 1082 */ 1083 enum { 1084 SCAN_SW_SCANNING, 1085 SCAN_HW_SCANNING, 1086 SCAN_ONCHANNEL_SCANNING, 1087 SCAN_COMPLETED, 1088 SCAN_ABORTED, 1089 SCAN_HW_CANCELLED, 1090 }; 1091 1092 /** 1093 * enum mac80211_scan_state - scan state machine states 1094 * 1095 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1096 * determines if we should keep on scanning or switch back to the 1097 * operating channel 1098 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1099 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1100 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1101 * send out data 1102 * @SCAN_RESUME: Resume the scan and scan the next channel 1103 * @SCAN_ABORT: Abort the scan and go back to operating channel 1104 */ 1105 enum mac80211_scan_state { 1106 SCAN_DECISION, 1107 SCAN_SET_CHANNEL, 1108 SCAN_SEND_PROBE, 1109 SCAN_SUSPEND, 1110 SCAN_RESUME, 1111 SCAN_ABORT, 1112 }; 1113 1114 struct ieee80211_local { 1115 /* embed the driver visible part. 1116 * don't cast (use the static inlines below), but we keep 1117 * it first anyway so they become a no-op */ 1118 struct ieee80211_hw hw; 1119 1120 struct fq fq; 1121 struct codel_vars *cvars; 1122 struct codel_params cparams; 1123 1124 const struct ieee80211_ops *ops; 1125 1126 /* 1127 * private workqueue to mac80211. mac80211 makes this accessible 1128 * via ieee80211_queue_work() 1129 */ 1130 struct workqueue_struct *workqueue; 1131 1132 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1133 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1134 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1135 spinlock_t queue_stop_reason_lock; 1136 1137 int open_count; 1138 int monitors, cooked_mntrs; 1139 /* number of interfaces with corresponding FIF_ flags */ 1140 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1141 fif_probe_req; 1142 int probe_req_reg; 1143 unsigned int filter_flags; /* FIF_* */ 1144 1145 bool wiphy_ciphers_allocated; 1146 1147 bool use_chanctx; 1148 1149 /* protects the aggregated multicast list and filter calls */ 1150 spinlock_t filter_lock; 1151 1152 /* used for uploading changed mc list */ 1153 struct work_struct reconfig_filter; 1154 1155 /* aggregated multicast list */ 1156 struct netdev_hw_addr_list mc_list; 1157 1158 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1159 1160 /* 1161 * suspended is true if we finished all the suspend _and_ we have 1162 * not yet come up from resume. This is to be used by mac80211 1163 * to ensure driver sanity during suspend and mac80211's own 1164 * sanity. It can eventually be used for WoW as well. 1165 */ 1166 bool suspended; 1167 1168 /* 1169 * Resuming is true while suspended, but when we're reprogramming the 1170 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1171 * again even though some other parts of the stack are still suspended 1172 * and we still drop received frames to avoid waking the stack. 1173 */ 1174 bool resuming; 1175 1176 /* 1177 * quiescing is true during the suspend process _only_ to 1178 * ease timer cancelling etc. 1179 */ 1180 bool quiescing; 1181 1182 /* device is started */ 1183 bool started; 1184 1185 /* device is during a HW reconfig */ 1186 bool in_reconfig; 1187 1188 /* wowlan is enabled -- don't reconfig on resume */ 1189 bool wowlan; 1190 1191 struct work_struct radar_detected_work; 1192 1193 /* number of RX chains the hardware has */ 1194 u8 rx_chains; 1195 1196 int tx_headroom; /* required headroom for hardware/radiotap */ 1197 1198 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1199 * added to skb_queue will be processed, but frames in 1200 * skb_queue_unreliable may be dropped if the total length of these 1201 * queues increases over the limit. */ 1202 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1203 struct tasklet_struct tasklet; 1204 struct sk_buff_head skb_queue; 1205 struct sk_buff_head skb_queue_unreliable; 1206 1207 spinlock_t rx_path_lock; 1208 1209 /* Station data */ 1210 /* 1211 * The mutex only protects the list, hash table and 1212 * counter, reads are done with RCU. 1213 */ 1214 struct mutex sta_mtx; 1215 spinlock_t tim_lock; 1216 unsigned long num_sta; 1217 struct list_head sta_list; 1218 struct rhltable sta_hash; 1219 struct timer_list sta_cleanup; 1220 int sta_generation; 1221 1222 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1223 struct tasklet_struct tx_pending_tasklet; 1224 1225 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1226 1227 /* number of interfaces with allmulti RX */ 1228 atomic_t iff_allmultis; 1229 1230 struct rate_control_ref *rate_ctrl; 1231 1232 struct crypto_cipher *wep_tx_tfm; 1233 struct crypto_cipher *wep_rx_tfm; 1234 u32 wep_iv; 1235 1236 /* see iface.c */ 1237 struct list_head interfaces; 1238 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1239 struct mutex iflist_mtx; 1240 1241 /* 1242 * Key mutex, protects sdata's key_list and sta_info's 1243 * key pointers (write access, they're RCU.) 1244 */ 1245 struct mutex key_mtx; 1246 1247 /* mutex for scan and work locking */ 1248 struct mutex mtx; 1249 1250 /* Scanning and BSS list */ 1251 unsigned long scanning; 1252 struct cfg80211_ssid scan_ssid; 1253 struct cfg80211_scan_request *int_scan_req; 1254 struct cfg80211_scan_request __rcu *scan_req; 1255 struct ieee80211_scan_request *hw_scan_req; 1256 struct cfg80211_chan_def scan_chandef; 1257 enum nl80211_band hw_scan_band; 1258 int scan_channel_idx; 1259 int scan_ies_len; 1260 int hw_scan_ies_bufsize; 1261 struct cfg80211_scan_info scan_info; 1262 1263 struct work_struct sched_scan_stopped_work; 1264 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1265 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1266 u8 scan_addr[ETH_ALEN]; 1267 1268 unsigned long leave_oper_channel_time; 1269 enum mac80211_scan_state next_scan_state; 1270 struct delayed_work scan_work; 1271 struct ieee80211_sub_if_data __rcu *scan_sdata; 1272 /* For backward compatibility only -- do not use */ 1273 struct cfg80211_chan_def _oper_chandef; 1274 1275 /* Temporary remain-on-channel for off-channel operations */ 1276 struct ieee80211_channel *tmp_channel; 1277 1278 /* channel contexts */ 1279 struct list_head chanctx_list; 1280 struct mutex chanctx_mtx; 1281 1282 #ifdef CONFIG_MAC80211_LEDS 1283 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1284 struct led_trigger tpt_led; 1285 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1286 atomic_t radio_led_active, tpt_led_active; 1287 struct tpt_led_trigger *tpt_led_trigger; 1288 #endif 1289 1290 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1291 /* SNMP counters */ 1292 /* dot11CountersTable */ 1293 u32 dot11TransmittedFragmentCount; 1294 u32 dot11MulticastTransmittedFrameCount; 1295 u32 dot11FailedCount; 1296 u32 dot11RetryCount; 1297 u32 dot11MultipleRetryCount; 1298 u32 dot11FrameDuplicateCount; 1299 u32 dot11ReceivedFragmentCount; 1300 u32 dot11MulticastReceivedFrameCount; 1301 u32 dot11TransmittedFrameCount; 1302 1303 /* TX/RX handler statistics */ 1304 unsigned int tx_handlers_drop; 1305 unsigned int tx_handlers_queued; 1306 unsigned int tx_handlers_drop_wep; 1307 unsigned int tx_handlers_drop_not_assoc; 1308 unsigned int tx_handlers_drop_unauth_port; 1309 unsigned int rx_handlers_drop; 1310 unsigned int rx_handlers_queued; 1311 unsigned int rx_handlers_drop_nullfunc; 1312 unsigned int rx_handlers_drop_defrag; 1313 unsigned int tx_expand_skb_head; 1314 unsigned int tx_expand_skb_head_cloned; 1315 unsigned int rx_expand_skb_head_defrag; 1316 unsigned int rx_handlers_fragments; 1317 unsigned int tx_status_drop; 1318 #define I802_DEBUG_INC(c) (c)++ 1319 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1320 #define I802_DEBUG_INC(c) do { } while (0) 1321 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1322 1323 1324 int total_ps_buffered; /* total number of all buffered unicast and 1325 * multicast packets for power saving stations 1326 */ 1327 1328 bool pspolling; 1329 bool offchannel_ps_enabled; 1330 /* 1331 * PS can only be enabled when we have exactly one managed 1332 * interface (and monitors) in PS, this then points there. 1333 */ 1334 struct ieee80211_sub_if_data *ps_sdata; 1335 struct work_struct dynamic_ps_enable_work; 1336 struct work_struct dynamic_ps_disable_work; 1337 struct timer_list dynamic_ps_timer; 1338 struct notifier_block ifa_notifier; 1339 struct notifier_block ifa6_notifier; 1340 1341 /* 1342 * The dynamic ps timeout configured from user space via WEXT - 1343 * this will override whatever chosen by mac80211 internally. 1344 */ 1345 int dynamic_ps_forced_timeout; 1346 1347 int user_power_level; /* in dBm, for all interfaces */ 1348 1349 enum ieee80211_smps_mode smps_mode; 1350 1351 struct work_struct restart_work; 1352 1353 #ifdef CONFIG_MAC80211_DEBUGFS 1354 struct local_debugfsdentries { 1355 struct dentry *rcdir; 1356 struct dentry *keys; 1357 } debugfs; 1358 #endif 1359 1360 /* 1361 * Remain-on-channel support 1362 */ 1363 struct delayed_work roc_work; 1364 struct list_head roc_list; 1365 struct work_struct hw_roc_start, hw_roc_done; 1366 unsigned long hw_roc_start_time; 1367 u64 roc_cookie_counter; 1368 1369 struct idr ack_status_frames; 1370 spinlock_t ack_status_lock; 1371 1372 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1373 1374 /* virtual monitor interface */ 1375 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1376 struct cfg80211_chan_def monitor_chandef; 1377 1378 /* extended capabilities provided by mac80211 */ 1379 u8 ext_capa[8]; 1380 1381 /* TDLS channel switch */ 1382 struct work_struct tdls_chsw_work; 1383 struct sk_buff_head skb_queue_tdls_chsw; 1384 }; 1385 1386 static inline struct ieee80211_sub_if_data * 1387 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1388 { 1389 return netdev_priv(dev); 1390 } 1391 1392 static inline struct ieee80211_sub_if_data * 1393 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1394 { 1395 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1396 } 1397 1398 static inline struct ieee80211_supported_band * 1399 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1400 { 1401 struct ieee80211_local *local = sdata->local; 1402 struct ieee80211_chanctx_conf *chanctx_conf; 1403 enum nl80211_band band; 1404 1405 rcu_read_lock(); 1406 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1407 1408 if (WARN_ON(!chanctx_conf)) { 1409 rcu_read_unlock(); 1410 return NULL; 1411 } 1412 1413 band = chanctx_conf->def.chan->band; 1414 rcu_read_unlock(); 1415 1416 return local->hw.wiphy->bands[band]; 1417 } 1418 1419 /* this struct holds the value parsing from channel switch IE */ 1420 struct ieee80211_csa_ie { 1421 struct cfg80211_chan_def chandef; 1422 u8 mode; 1423 u8 count; 1424 u8 ttl; 1425 u16 pre_value; 1426 u16 reason_code; 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 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1471 1472 /* length of them, respectively */ 1473 u8 ext_capab_len; 1474 u8 ssid_len; 1475 u8 supp_rates_len; 1476 u8 tim_len; 1477 u8 challenge_len; 1478 u8 rsn_len; 1479 u8 ext_supp_rates_len; 1480 u8 wmm_info_len; 1481 u8 wmm_param_len; 1482 u8 mesh_id_len; 1483 u8 peering_len; 1484 u8 preq_len; 1485 u8 prep_len; 1486 u8 perr_len; 1487 u8 country_elem_len; 1488 1489 /* whether a parse error occurred while retrieving these elements */ 1490 bool parse_error; 1491 }; 1492 1493 static inline struct ieee80211_local *hw_to_local( 1494 struct ieee80211_hw *hw) 1495 { 1496 return container_of(hw, struct ieee80211_local, hw); 1497 } 1498 1499 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1500 { 1501 return container_of(txq, struct txq_info, txq); 1502 } 1503 1504 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1505 { 1506 struct txq_info *txqi = to_txq_info(txq); 1507 1508 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1509 } 1510 1511 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1512 { 1513 return ether_addr_equal(raddr, addr) || 1514 is_broadcast_ether_addr(raddr); 1515 } 1516 1517 static inline bool 1518 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1519 { 1520 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1521 status->flag & RX_FLAG_MACTIME_END); 1522 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1523 return true; 1524 /* can't handle non-legacy preamble yet */ 1525 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1526 status->encoding == RX_ENC_LEGACY) 1527 return true; 1528 return false; 1529 } 1530 1531 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1532 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1533 1534 /* This function returns the number of multicast stations connected to this 1535 * interface. It returns -1 if that number is not tracked, that is for netdevs 1536 * not in AP or AP_VLAN mode or when using 4addr. 1537 */ 1538 static inline int 1539 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1540 { 1541 if (sdata->vif.type == NL80211_IFTYPE_AP) 1542 return atomic_read(&sdata->u.ap.num_mcast_sta); 1543 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1544 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1545 return -1; 1546 } 1547 1548 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1549 struct ieee80211_rx_status *status, 1550 unsigned int mpdu_len, 1551 unsigned int mpdu_offset); 1552 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1553 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1554 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1555 u32 changed); 1556 void ieee80211_configure_filter(struct ieee80211_local *local); 1557 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1558 1559 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1560 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1561 u64 *cookie, gfp_t gfp); 1562 1563 void ieee80211_check_fast_rx(struct sta_info *sta); 1564 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1565 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1566 void ieee80211_clear_fast_rx(struct sta_info *sta); 1567 1568 /* STA code */ 1569 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1570 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1571 struct cfg80211_auth_request *req); 1572 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1573 struct cfg80211_assoc_request *req); 1574 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1575 struct cfg80211_deauth_request *req); 1576 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1577 struct cfg80211_disassoc_request *req); 1578 void ieee80211_send_pspoll(struct ieee80211_local *local, 1579 struct ieee80211_sub_if_data *sdata); 1580 void ieee80211_recalc_ps(struct ieee80211_local *local); 1581 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1582 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1583 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1584 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1585 struct sk_buff *skb); 1586 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1587 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1588 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1589 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1590 __le16 fc, bool acked); 1591 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1592 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1593 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1594 1595 /* IBSS code */ 1596 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1597 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1598 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1599 const u8 *bssid, const u8 *addr, u32 supp_rates); 1600 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1601 struct cfg80211_ibss_params *params); 1602 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1603 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1604 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1605 struct sk_buff *skb); 1606 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1607 struct cfg80211_csa_settings *csa_settings); 1608 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1609 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1610 1611 /* OCB code */ 1612 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1613 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1614 const u8 *bssid, const u8 *addr, u32 supp_rates); 1615 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1616 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1617 struct ocb_setup *setup); 1618 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1619 1620 /* mesh code */ 1621 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1622 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1623 struct sk_buff *skb); 1624 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1625 struct cfg80211_csa_settings *csa_settings); 1626 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1627 1628 /* scan/BSS handling */ 1629 void ieee80211_scan_work(struct work_struct *work); 1630 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1631 const u8 *ssid, u8 ssid_len, 1632 struct ieee80211_channel **channels, 1633 unsigned int n_channels, 1634 enum nl80211_bss_scan_width scan_width); 1635 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1636 struct cfg80211_scan_request *req); 1637 void ieee80211_scan_cancel(struct ieee80211_local *local); 1638 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1639 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1640 1641 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1642 struct ieee80211_bss * 1643 ieee80211_bss_info_update(struct ieee80211_local *local, 1644 struct ieee80211_rx_status *rx_status, 1645 struct ieee80211_mgmt *mgmt, 1646 size_t len, 1647 struct ieee802_11_elems *elems, 1648 struct ieee80211_channel *channel); 1649 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1650 struct ieee80211_bss *bss); 1651 1652 /* scheduled scan handling */ 1653 int 1654 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1655 struct cfg80211_sched_scan_request *req); 1656 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1657 struct cfg80211_sched_scan_request *req); 1658 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1659 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1660 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1661 1662 /* off-channel/mgmt-tx */ 1663 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1664 void ieee80211_offchannel_return(struct ieee80211_local *local); 1665 void ieee80211_roc_setup(struct ieee80211_local *local); 1666 void ieee80211_start_next_roc(struct ieee80211_local *local); 1667 void ieee80211_roc_purge(struct ieee80211_local *local, 1668 struct ieee80211_sub_if_data *sdata); 1669 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1670 struct ieee80211_channel *chan, 1671 unsigned int duration, u64 *cookie); 1672 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1673 struct wireless_dev *wdev, u64 cookie); 1674 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1675 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1676 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1677 struct wireless_dev *wdev, u64 cookie); 1678 1679 /* channel switch handling */ 1680 void ieee80211_csa_finalize_work(struct work_struct *work); 1681 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1682 struct cfg80211_csa_settings *params); 1683 1684 /* interface handling */ 1685 int ieee80211_iface_init(void); 1686 void ieee80211_iface_exit(void); 1687 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1688 unsigned char name_assign_type, 1689 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1690 struct vif_params *params); 1691 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1692 enum nl80211_iftype type); 1693 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1694 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1695 u32 ieee80211_idle_off(struct ieee80211_local *local); 1696 void ieee80211_recalc_idle(struct ieee80211_local *local); 1697 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1698 const int offset); 1699 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1700 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1701 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1702 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1703 1704 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1705 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1706 bool update_bss); 1707 1708 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1709 { 1710 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1711 } 1712 1713 /* tx handling */ 1714 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1715 void ieee80211_tx_pending(unsigned long data); 1716 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1717 struct net_device *dev); 1718 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1719 struct net_device *dev); 1720 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1721 struct net_device *dev, 1722 u32 info_flags); 1723 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1724 struct sk_buff_head *skbs); 1725 struct sk_buff * 1726 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1727 struct sk_buff *skb, u32 info_flags); 1728 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1729 struct ieee80211_supported_band *sband, 1730 int retry_count, int shift, bool send_to_cooked); 1731 1732 void ieee80211_check_fast_xmit(struct sta_info *sta); 1733 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1734 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1735 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1736 1737 /* HT */ 1738 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1739 struct ieee80211_sta_ht_cap *ht_cap); 1740 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1741 struct ieee80211_supported_band *sband, 1742 const struct ieee80211_ht_cap *ht_cap_ie, 1743 struct sta_info *sta); 1744 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1745 const u8 *da, u16 tid, 1746 u16 initiator, u16 reason_code); 1747 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1748 enum ieee80211_smps_mode smps, const u8 *da, 1749 const u8 *bssid); 1750 void ieee80211_request_smps_ap_work(struct work_struct *work); 1751 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1752 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1753 enum ieee80211_smps_mode smps_mode_new); 1754 1755 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1756 u16 initiator, u16 reason, bool stop); 1757 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1758 u16 initiator, u16 reason, bool stop); 1759 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1760 u8 dialog_token, u16 timeout, 1761 u16 start_seq_num, u16 ba_policy, u16 tid, 1762 u16 buf_size, bool tx, bool auto_seq); 1763 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1764 u8 dialog_token, u16 timeout, 1765 u16 start_seq_num, u16 ba_policy, u16 tid, 1766 u16 buf_size, bool tx, bool auto_seq); 1767 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1768 enum ieee80211_agg_stop_reason reason); 1769 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1770 struct sta_info *sta, 1771 struct ieee80211_mgmt *mgmt, size_t len); 1772 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1773 struct sta_info *sta, 1774 struct ieee80211_mgmt *mgmt, 1775 size_t len); 1776 void ieee80211_process_addba_request(struct ieee80211_local *local, 1777 struct sta_info *sta, 1778 struct ieee80211_mgmt *mgmt, 1779 size_t len); 1780 1781 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1782 enum ieee80211_agg_stop_reason reason); 1783 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1784 enum ieee80211_agg_stop_reason reason); 1785 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1786 struct tid_ampdu_tx *tid_tx); 1787 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1788 struct tid_ampdu_tx *tid_tx); 1789 void ieee80211_ba_session_work(struct work_struct *work); 1790 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1791 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1792 1793 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1794 1795 /* VHT */ 1796 void 1797 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1798 struct ieee80211_supported_band *sband, 1799 const struct ieee80211_vht_cap *vht_cap_ie, 1800 struct sta_info *sta); 1801 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1802 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1803 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1804 enum ieee80211_sta_rx_bandwidth 1805 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1806 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1807 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1808 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1809 struct ieee80211_mgmt *mgmt); 1810 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1811 struct sta_info *sta, u8 opmode, 1812 enum nl80211_band band); 1813 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1814 struct sta_info *sta, u8 opmode, 1815 enum nl80211_band band); 1816 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1817 struct ieee80211_sta_vht_cap *vht_cap); 1818 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1819 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1820 1821 /* Spectrum management */ 1822 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1823 struct ieee80211_mgmt *mgmt, 1824 size_t len); 1825 /** 1826 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1827 * @sdata: the sdata of the interface which has received the frame 1828 * @elems: parsed 802.11 elements received with the frame 1829 * @current_band: indicates the current band 1830 * @sta_flags: contains information about own capabilities and restrictions 1831 * to decide which channel switch announcements can be accepted. Only the 1832 * following subset of &enum ieee80211_sta_flags are evaluated: 1833 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1834 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1835 * %IEEE80211_STA_DISABLE_160MHZ. 1836 * @bssid: the currently connected bssid (for reporting) 1837 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1838 All of them will be filled with if success only. 1839 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1840 */ 1841 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1842 struct ieee802_11_elems *elems, 1843 enum nl80211_band current_band, 1844 u32 sta_flags, u8 *bssid, 1845 struct ieee80211_csa_ie *csa_ie); 1846 1847 /* Suspend/resume and hw reconfiguration */ 1848 int ieee80211_reconfig(struct ieee80211_local *local); 1849 void ieee80211_stop_device(struct ieee80211_local *local); 1850 1851 int __ieee80211_suspend(struct ieee80211_hw *hw, 1852 struct cfg80211_wowlan *wowlan); 1853 1854 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1855 { 1856 struct ieee80211_local *local = hw_to_local(hw); 1857 1858 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1859 !test_bit(SCAN_COMPLETED, &local->scanning), 1860 "%s: resume with hardware scan still in progress\n", 1861 wiphy_name(hw->wiphy)); 1862 1863 return ieee80211_reconfig(hw_to_local(hw)); 1864 } 1865 1866 /* utility functions/constants */ 1867 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1868 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1869 int rate, int erp, int short_preamble, 1870 int shift); 1871 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1872 bool bss_notify, bool enable_qos); 1873 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1874 struct sta_info *sta, struct sk_buff *skb); 1875 1876 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1877 struct sk_buff *skb, int tid, 1878 enum nl80211_band band); 1879 1880 static inline void 1881 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1882 struct sk_buff *skb, int tid, 1883 enum nl80211_band band) 1884 { 1885 rcu_read_lock(); 1886 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1887 rcu_read_unlock(); 1888 } 1889 1890 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1891 struct sk_buff *skb, int tid) 1892 { 1893 struct ieee80211_chanctx_conf *chanctx_conf; 1894 1895 rcu_read_lock(); 1896 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1897 if (WARN_ON(!chanctx_conf)) { 1898 rcu_read_unlock(); 1899 kfree_skb(skb); 1900 return; 1901 } 1902 1903 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1904 chanctx_conf->def.chan->band); 1905 rcu_read_unlock(); 1906 } 1907 1908 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1909 struct sk_buff *skb) 1910 { 1911 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1912 ieee80211_tx_skb_tid(sdata, skb, 7); 1913 } 1914 1915 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1916 struct ieee802_11_elems *elems, 1917 u64 filter, u32 crc); 1918 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1919 bool action, 1920 struct ieee802_11_elems *elems) 1921 { 1922 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1923 } 1924 1925 1926 extern const int ieee802_1d_to_ac[8]; 1927 1928 static inline int ieee80211_ac_from_tid(int tid) 1929 { 1930 return ieee802_1d_to_ac[tid & 7]; 1931 } 1932 1933 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1934 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1935 void ieee80211_dynamic_ps_timer(unsigned long data); 1936 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1937 struct ieee80211_sub_if_data *sdata, 1938 bool powersave); 1939 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1940 struct ieee80211_hdr *hdr); 1941 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1942 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1943 1944 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1945 unsigned long queues, 1946 enum queue_stop_reason reason, 1947 bool refcounted); 1948 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1949 struct ieee80211_sub_if_data *sdata, 1950 enum queue_stop_reason reason); 1951 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1952 struct ieee80211_sub_if_data *sdata, 1953 enum queue_stop_reason reason); 1954 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1955 unsigned long queues, 1956 enum queue_stop_reason reason, 1957 bool refcounted); 1958 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1959 enum queue_stop_reason reason, 1960 bool refcounted); 1961 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1962 enum queue_stop_reason reason, 1963 bool refcounted); 1964 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1965 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1966 struct sk_buff *skb); 1967 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1968 struct sk_buff_head *skbs); 1969 void ieee80211_flush_queues(struct ieee80211_local *local, 1970 struct ieee80211_sub_if_data *sdata, bool drop); 1971 void __ieee80211_flush_queues(struct ieee80211_local *local, 1972 struct ieee80211_sub_if_data *sdata, 1973 unsigned int queues, bool drop); 1974 1975 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1976 { 1977 /* 1978 * If quiescing is set, we are racing with __ieee80211_suspend. 1979 * __ieee80211_suspend flushes the workers after setting quiescing, 1980 * and we check quiescing / suspended before enqueing new workers. 1981 * We should abort the worker to avoid the races below. 1982 */ 1983 if (local->quiescing) 1984 return false; 1985 1986 /* 1987 * We might already be suspended if the following scenario occurs: 1988 * __ieee80211_suspend Control path 1989 * 1990 * if (local->quiescing) 1991 * return; 1992 * local->quiescing = true; 1993 * flush_workqueue(); 1994 * queue_work(...); 1995 * local->suspended = true; 1996 * local->quiescing = false; 1997 * worker starts running... 1998 */ 1999 if (local->suspended) 2000 return false; 2001 2002 return true; 2003 } 2004 2005 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2006 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2007 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2008 struct sta_info *sta, 2009 struct txq_info *txq, int tid); 2010 void ieee80211_txq_purge(struct ieee80211_local *local, 2011 struct txq_info *txqi); 2012 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2013 u16 transaction, u16 auth_alg, u16 status, 2014 const u8 *extra, size_t extra_len, const u8 *bssid, 2015 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2016 u32 tx_flags); 2017 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2018 const u8 *bssid, u16 stype, u16 reason, 2019 bool send_frame, u8 *frame_buf); 2020 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2021 size_t buffer_len, 2022 struct ieee80211_scan_ies *ie_desc, 2023 const u8 *ie, size_t ie_len, 2024 u8 bands_used, u32 *rate_masks, 2025 struct cfg80211_chan_def *chandef); 2026 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2027 const u8 *src, const u8 *dst, 2028 u32 ratemask, 2029 struct ieee80211_channel *chan, 2030 const u8 *ssid, size_t ssid_len, 2031 const u8 *ie, size_t ie_len, 2032 bool directed); 2033 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 2034 const u8 *src, const u8 *dst, 2035 const u8 *ssid, size_t ssid_len, 2036 const u8 *ie, size_t ie_len, 2037 u32 ratemask, bool directed, u32 tx_flags, 2038 struct ieee80211_channel *channel, bool scan); 2039 2040 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2041 struct ieee802_11_elems *elems, 2042 enum nl80211_band band, u32 *basic_rates); 2043 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2044 enum ieee80211_smps_mode smps_mode); 2045 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2046 enum ieee80211_smps_mode smps_mode); 2047 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2048 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2049 2050 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2051 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2052 u16 cap); 2053 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2054 const struct cfg80211_chan_def *chandef, 2055 u16 prot_mode, bool rifs_mode); 2056 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2057 const struct cfg80211_chan_def *chandef); 2058 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2059 u32 cap); 2060 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2061 const struct cfg80211_chan_def *chandef); 2062 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2063 const struct ieee80211_supported_band *sband, 2064 const u8 *srates, int srates_len, u32 *rates); 2065 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2066 struct sk_buff *skb, bool need_basic, 2067 enum nl80211_band band); 2068 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2069 struct sk_buff *skb, bool need_basic, 2070 enum nl80211_band band); 2071 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2072 2073 /* channel management */ 2074 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2075 struct cfg80211_chan_def *chandef); 2076 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2077 struct cfg80211_chan_def *chandef); 2078 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2079 2080 int __must_check 2081 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2082 const struct cfg80211_chan_def *chandef, 2083 enum ieee80211_chanctx_mode mode); 2084 int __must_check 2085 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2086 const struct cfg80211_chan_def *chandef, 2087 enum ieee80211_chanctx_mode mode, 2088 bool radar_required); 2089 int __must_check 2090 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2091 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2092 2093 int __must_check 2094 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2095 const struct cfg80211_chan_def *chandef, 2096 u32 *changed); 2097 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2098 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2099 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2100 bool clear); 2101 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2102 struct ieee80211_chanctx *ctx); 2103 2104 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2105 struct ieee80211_chanctx *chanctx); 2106 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2107 struct ieee80211_chanctx *ctx); 2108 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2109 2110 void ieee80211_dfs_cac_timer(unsigned long data); 2111 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2112 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2113 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2114 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2115 struct cfg80211_csa_settings *csa_settings); 2116 2117 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2118 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2119 const struct ieee80211_cipher_scheme * 2120 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2121 enum nl80211_iftype iftype); 2122 int ieee80211_cs_headroom(struct ieee80211_local *local, 2123 struct cfg80211_crypto_settings *crypto, 2124 enum nl80211_iftype iftype); 2125 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2126 struct ieee80211_sub_if_data *sdata); 2127 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2128 const struct cfg80211_chan_def *chandef, 2129 enum ieee80211_chanctx_mode chanmode, 2130 u8 radar_detect); 2131 int ieee80211_max_num_channels(struct ieee80211_local *local); 2132 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2133 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2134 struct ieee80211_chanctx *ctx); 2135 2136 /* TDLS */ 2137 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2138 const u8 *peer, u8 action_code, u8 dialog_token, 2139 u16 status_code, u32 peer_capability, 2140 bool initiator, const u8 *extra_ies, 2141 size_t extra_ies_len); 2142 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2143 const u8 *peer, enum nl80211_tdls_operation oper); 2144 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2145 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2146 const u8 *addr, u8 oper_class, 2147 struct cfg80211_chan_def *chandef); 2148 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2149 struct net_device *dev, 2150 const u8 *addr); 2151 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2152 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2153 2154 extern const struct ethtool_ops ieee80211_ethtool_ops; 2155 2156 #ifdef CONFIG_MAC80211_NOINLINE 2157 #define debug_noinline noinline 2158 #else 2159 #define debug_noinline 2160 #endif 2161 2162 #endif /* IEEE80211_I_H */ 2163