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 }; 301 302 struct ieee80211_if_wds { 303 struct sta_info *sta; 304 u8 remote_addr[ETH_ALEN]; 305 }; 306 307 struct ieee80211_if_vlan { 308 struct list_head list; /* write-protected with RTNL and local->mtx */ 309 310 /* used for all tx if the VLAN is configured to 4-addr mode */ 311 struct sta_info __rcu *sta; 312 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 313 }; 314 315 struct mesh_stats { 316 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 317 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 318 __u32 fwded_frames; /* Mesh total forwarded frames */ 319 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 320 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 321 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 322 }; 323 324 #define PREQ_Q_F_START 0x1 325 #define PREQ_Q_F_REFRESH 0x2 326 struct mesh_preq_queue { 327 struct list_head list; 328 u8 dst[ETH_ALEN]; 329 u8 flags; 330 }; 331 332 struct ieee80211_roc_work { 333 struct list_head list; 334 335 struct ieee80211_sub_if_data *sdata; 336 337 struct ieee80211_channel *chan; 338 339 bool started, abort, hw_begun, notified; 340 bool on_channel; 341 342 unsigned long start_time; 343 344 u32 duration, req_duration; 345 struct sk_buff *frame; 346 u64 cookie, mgmt_tx_cookie; 347 enum ieee80211_roc_type type; 348 }; 349 350 /* flags used in struct ieee80211_if_managed.flags */ 351 enum ieee80211_sta_flags { 352 IEEE80211_STA_CONNECTION_POLL = BIT(1), 353 IEEE80211_STA_CONTROL_PORT = BIT(2), 354 IEEE80211_STA_DISABLE_HT = BIT(4), 355 IEEE80211_STA_MFP_ENABLED = BIT(6), 356 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 357 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 358 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 359 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 360 IEEE80211_STA_DISABLE_VHT = BIT(11), 361 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 362 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 363 IEEE80211_STA_DISABLE_WMM = BIT(14), 364 IEEE80211_STA_ENABLE_RRM = BIT(15), 365 }; 366 367 struct ieee80211_mgd_auth_data { 368 struct cfg80211_bss *bss; 369 unsigned long timeout; 370 int tries; 371 u16 algorithm, expected_transaction; 372 373 u8 key[WLAN_KEY_LEN_WEP104]; 374 u8 key_len, key_idx; 375 bool done; 376 bool timeout_started; 377 378 u16 sae_trans, sae_status; 379 size_t data_len; 380 u8 data[]; 381 }; 382 383 struct ieee80211_mgd_assoc_data { 384 struct cfg80211_bss *bss; 385 const u8 *supp_rates; 386 387 unsigned long timeout; 388 int tries; 389 390 u16 capability; 391 u8 prev_bssid[ETH_ALEN]; 392 u8 ssid[IEEE80211_MAX_SSID_LEN]; 393 u8 ssid_len; 394 u8 supp_rates_len; 395 bool wmm, uapsd; 396 bool need_beacon; 397 bool synced; 398 bool timeout_started; 399 400 u8 ap_ht_param; 401 402 struct ieee80211_vht_cap ap_vht_cap; 403 404 u8 fils_nonces[2 * FILS_NONCE_LEN]; 405 u8 fils_kek[FILS_MAX_KEK_LEN]; 406 size_t fils_kek_len; 407 408 size_t ie_len; 409 u8 ie[]; 410 }; 411 412 struct ieee80211_sta_tx_tspec { 413 /* timestamp of the first packet in the time slice */ 414 unsigned long time_slice_start; 415 416 u32 admitted_time; /* in usecs, unlike over the air */ 417 u8 tsid; 418 s8 up; /* signed to be able to invalidate with -1 during teardown */ 419 420 /* consumed TX time in microseconds in the time slice */ 421 u32 consumed_tx_time; 422 enum { 423 TX_TSPEC_ACTION_NONE = 0, 424 TX_TSPEC_ACTION_DOWNGRADE, 425 TX_TSPEC_ACTION_STOP_DOWNGRADE, 426 } action; 427 bool downgraded; 428 }; 429 430 DECLARE_EWMA(beacon_signal, 16, 4) 431 432 struct ieee80211_if_managed { 433 struct timer_list timer; 434 struct timer_list conn_mon_timer; 435 struct timer_list bcn_mon_timer; 436 struct timer_list chswitch_timer; 437 struct work_struct monitor_work; 438 struct work_struct chswitch_work; 439 struct work_struct beacon_connection_loss_work; 440 struct work_struct csa_connection_drop_work; 441 442 unsigned long beacon_timeout; 443 unsigned long probe_timeout; 444 int probe_send_count; 445 bool nullfunc_failed; 446 bool connection_loss; 447 448 struct cfg80211_bss *associated; 449 struct ieee80211_mgd_auth_data *auth_data; 450 struct ieee80211_mgd_assoc_data *assoc_data; 451 452 u8 bssid[ETH_ALEN] __aligned(2); 453 454 u16 aid; 455 456 bool powersave; /* powersave requested for this iface */ 457 bool broken_ap; /* AP is broken -- turn off powersave */ 458 bool have_beacon; 459 u8 dtim_period; 460 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 461 driver_smps_mode; /* smps mode request */ 462 463 struct work_struct request_smps_work; 464 465 unsigned int flags; 466 467 bool csa_waiting_bcn; 468 bool csa_ignored_same_chan; 469 470 bool beacon_crc_valid; 471 u32 beacon_crc; 472 473 bool status_acked; 474 bool status_received; 475 __le16 status_fc; 476 477 enum { 478 IEEE80211_MFP_DISABLED, 479 IEEE80211_MFP_OPTIONAL, 480 IEEE80211_MFP_REQUIRED 481 } mfp; /* management frame protection */ 482 483 /* 484 * Bitmask of enabled u-apsd queues, 485 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 486 * to take effect. 487 */ 488 unsigned int uapsd_queues; 489 490 /* 491 * Maximum number of buffered frames AP can deliver during a 492 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 493 * Needs a new association to take effect. 494 */ 495 unsigned int uapsd_max_sp_len; 496 497 int wmm_last_param_set; 498 499 u8 use_4addr; 500 501 s16 p2p_noa_index; 502 503 struct ewma_beacon_signal ave_beacon_signal; 504 505 /* 506 * Number of Beacon frames used in ave_beacon_signal. This can be used 507 * to avoid generating less reliable cqm events that would be based 508 * only on couple of received frames. 509 */ 510 unsigned int count_beacon_signal; 511 512 /* Number of times beacon loss was invoked. */ 513 unsigned int beacon_loss_count; 514 515 /* 516 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 517 * that triggered a cqm event. 0 indicates that no event has been 518 * generated for the current association. 519 */ 520 int last_cqm_event_signal; 521 522 /* 523 * State variables for keeping track of RSSI of the AP currently 524 * connected to and informing driver when RSSI has gone 525 * below/above a certain threshold. 526 */ 527 int rssi_min_thold, rssi_max_thold; 528 int last_ave_beacon_signal; 529 530 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 531 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 532 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 533 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 534 535 /* TDLS support */ 536 u8 tdls_peer[ETH_ALEN] __aligned(2); 537 struct delayed_work tdls_peer_del_work; 538 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 539 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 540 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 541 bool tdls_chan_switch_prohibited; 542 bool tdls_wider_bw_prohibited; 543 544 /* WMM-AC TSPEC support */ 545 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 546 /* Use a separate work struct so that we can do something here 547 * while the sdata->work is flushing the queues, for example. 548 * otherwise, in scenarios where we hardly get any traffic out 549 * on the BE queue, but there's a lot of VO traffic, we might 550 * get stuck in a downgraded situation and flush takes forever. 551 */ 552 struct delayed_work tx_tspec_wk; 553 }; 554 555 struct ieee80211_if_ibss { 556 struct timer_list timer; 557 struct work_struct csa_connection_drop_work; 558 559 unsigned long last_scan_completed; 560 561 u32 basic_rates; 562 563 bool fixed_bssid; 564 bool fixed_channel; 565 bool privacy; 566 567 bool control_port; 568 bool userspace_handles_dfs; 569 570 u8 bssid[ETH_ALEN] __aligned(2); 571 u8 ssid[IEEE80211_MAX_SSID_LEN]; 572 u8 ssid_len, ie_len; 573 u8 *ie; 574 struct cfg80211_chan_def chandef; 575 576 unsigned long ibss_join_req; 577 /* probe response/beacon for IBSS */ 578 struct beacon_data __rcu *presp; 579 580 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 581 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 582 583 spinlock_t incomplete_lock; 584 struct list_head incomplete_stations; 585 586 enum { 587 IEEE80211_IBSS_MLME_SEARCH, 588 IEEE80211_IBSS_MLME_JOINED, 589 } state; 590 }; 591 592 /** 593 * struct ieee80211_if_ocb - OCB mode state 594 * 595 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 596 * @wrkq_flags: OCB deferred task action 597 * @incomplete_lock: delayed STA insertion lock 598 * @incomplete_stations: list of STAs waiting for delayed insertion 599 * @joined: indication if the interface is connected to an OCB network 600 */ 601 struct ieee80211_if_ocb { 602 struct timer_list housekeeping_timer; 603 unsigned long wrkq_flags; 604 605 spinlock_t incomplete_lock; 606 struct list_head incomplete_stations; 607 608 bool joined; 609 }; 610 611 /** 612 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 613 * 614 * these declarations define the interface, which enables 615 * vendor-specific mesh synchronization 616 * 617 */ 618 struct ieee802_11_elems; 619 struct ieee80211_mesh_sync_ops { 620 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 621 u16 stype, 622 struct ieee80211_mgmt *mgmt, 623 struct ieee802_11_elems *elems, 624 struct ieee80211_rx_status *rx_status); 625 626 /* should be called with beacon_data under RCU read lock */ 627 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 628 struct beacon_data *beacon); 629 /* add other framework functions here */ 630 }; 631 632 struct mesh_csa_settings { 633 struct rcu_head rcu_head; 634 struct cfg80211_csa_settings settings; 635 }; 636 637 struct ieee80211_if_mesh { 638 struct timer_list housekeeping_timer; 639 struct timer_list mesh_path_timer; 640 struct timer_list mesh_path_root_timer; 641 642 unsigned long wrkq_flags; 643 unsigned long mbss_changed; 644 645 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 646 size_t mesh_id_len; 647 /* Active Path Selection Protocol Identifier */ 648 u8 mesh_pp_id; 649 /* Active Path Selection Metric Identifier */ 650 u8 mesh_pm_id; 651 /* Congestion Control Mode Identifier */ 652 u8 mesh_cc_id; 653 /* Synchronization Protocol Identifier */ 654 u8 mesh_sp_id; 655 /* Authentication Protocol Identifier */ 656 u8 mesh_auth_id; 657 /* Local mesh Sequence Number */ 658 u32 sn; 659 /* Last used PREQ ID */ 660 u32 preq_id; 661 atomic_t mpaths; 662 /* Timestamp of last SN update */ 663 unsigned long last_sn_update; 664 /* Time when it's ok to send next PERR */ 665 unsigned long next_perr; 666 /* Timestamp of last PREQ sent */ 667 unsigned long last_preq; 668 struct mesh_rmc *rmc; 669 spinlock_t mesh_preq_queue_lock; 670 struct mesh_preq_queue preq_queue; 671 int preq_queue_len; 672 struct mesh_stats mshstats; 673 struct mesh_config mshcfg; 674 atomic_t estab_plinks; 675 u32 mesh_seqnum; 676 bool accepting_plinks; 677 int num_gates; 678 struct beacon_data __rcu *beacon; 679 const u8 *ie; 680 u8 ie_len; 681 enum { 682 IEEE80211_MESH_SEC_NONE = 0x0, 683 IEEE80211_MESH_SEC_AUTHED = 0x1, 684 IEEE80211_MESH_SEC_SECURED = 0x2, 685 } security; 686 bool user_mpm; 687 /* Extensible Synchronization Framework */ 688 const struct ieee80211_mesh_sync_ops *sync_ops; 689 s64 sync_offset_clockdrift_max; 690 spinlock_t sync_offset_lock; 691 bool adjusting_tbtt; 692 /* mesh power save */ 693 enum nl80211_mesh_power_mode nonpeer_pm; 694 int ps_peers_light_sleep; 695 int ps_peers_deep_sleep; 696 struct ps_data ps; 697 /* Channel Switching Support */ 698 struct mesh_csa_settings __rcu *csa; 699 enum { 700 IEEE80211_MESH_CSA_ROLE_NONE, 701 IEEE80211_MESH_CSA_ROLE_INIT, 702 IEEE80211_MESH_CSA_ROLE_REPEATER, 703 } csa_role; 704 u8 chsw_ttl; 705 u16 pre_value; 706 707 /* offset from skb->data while building IE */ 708 int meshconf_offset; 709 710 struct mesh_table *mesh_paths; 711 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 712 int mesh_paths_generation; 713 int mpp_paths_generation; 714 }; 715 716 #ifdef CONFIG_MAC80211_MESH 717 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 718 do { (msh)->mshstats.name++; } while (0) 719 #else 720 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 721 do { } while (0) 722 #endif 723 724 /** 725 * enum ieee80211_sub_if_data_flags - virtual interface flags 726 * 727 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 728 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 729 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 730 * associated stations and deliver multicast frames both 731 * back to wireless media and to the local net stack. 732 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 733 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 734 */ 735 enum ieee80211_sub_if_data_flags { 736 IEEE80211_SDATA_ALLMULTI = BIT(0), 737 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 738 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 739 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 740 IEEE80211_SDATA_IN_DRIVER = BIT(5), 741 }; 742 743 /** 744 * enum ieee80211_sdata_state_bits - virtual interface state bits 745 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 746 * mirrors netif_running() but is separate for interface type 747 * change handling while the interface is up 748 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 749 * mode, so queues are stopped 750 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 751 * to offchannel, reset when offchannel returns 752 */ 753 enum ieee80211_sdata_state_bits { 754 SDATA_STATE_RUNNING, 755 SDATA_STATE_OFFCHANNEL, 756 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 757 }; 758 759 /** 760 * enum ieee80211_chanctx_mode - channel context configuration mode 761 * 762 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 763 * multiple interfaces 764 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 765 * only by a single interface. This can be used for example for 766 * non-fixed channel IBSS. 767 */ 768 enum ieee80211_chanctx_mode { 769 IEEE80211_CHANCTX_SHARED, 770 IEEE80211_CHANCTX_EXCLUSIVE 771 }; 772 773 /** 774 * enum ieee80211_chanctx_replace_state - channel context replacement state 775 * 776 * This is used for channel context in-place reservations that require channel 777 * context switch/swap. 778 * 779 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 780 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 781 * by a (not yet registered) channel context pointed by %replace_ctx. 782 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 783 * replaces an existing channel context pointed to by %replace_ctx. 784 */ 785 enum ieee80211_chanctx_replace_state { 786 IEEE80211_CHANCTX_REPLACE_NONE, 787 IEEE80211_CHANCTX_WILL_BE_REPLACED, 788 IEEE80211_CHANCTX_REPLACES_OTHER, 789 }; 790 791 struct ieee80211_chanctx { 792 struct list_head list; 793 struct rcu_head rcu_head; 794 795 struct list_head assigned_vifs; 796 struct list_head reserved_vifs; 797 798 enum ieee80211_chanctx_replace_state replace_state; 799 struct ieee80211_chanctx *replace_ctx; 800 801 enum ieee80211_chanctx_mode mode; 802 bool driver_present; 803 804 struct ieee80211_chanctx_conf conf; 805 }; 806 807 struct mac80211_qos_map { 808 struct cfg80211_qos_map qos_map; 809 struct rcu_head rcu_head; 810 }; 811 812 enum txq_info_flags { 813 IEEE80211_TXQ_STOP, 814 IEEE80211_TXQ_AMPDU, 815 IEEE80211_TXQ_NO_AMSDU, 816 }; 817 818 /** 819 * struct txq_info - per tid queue 820 * 821 * @tin: contains packets split into multiple flows 822 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 823 * a fq_flow which is already owned by a different tin 824 * @def_cvars: codel vars for @def_flow 825 * @frags: used to keep fragments created after dequeue 826 */ 827 struct txq_info { 828 struct fq_tin tin; 829 struct fq_flow def_flow; 830 struct codel_vars def_cvars; 831 struct codel_stats cstats; 832 struct sk_buff_head frags; 833 unsigned long flags; 834 835 /* keep last! */ 836 struct ieee80211_txq txq; 837 }; 838 839 struct ieee80211_if_mntr { 840 u32 flags; 841 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 842 }; 843 844 /** 845 * struct ieee80211_if_nan - NAN state 846 * 847 * @conf: current NAN configuration 848 * @func_ids: a bitmap of available instance_id's 849 */ 850 struct ieee80211_if_nan { 851 struct cfg80211_nan_conf conf; 852 853 /* protects function_inst_ids */ 854 spinlock_t func_lock; 855 struct idr function_inst_ids; 856 }; 857 858 struct ieee80211_sub_if_data { 859 struct list_head list; 860 861 struct wireless_dev wdev; 862 863 /* keys */ 864 struct list_head key_list; 865 866 /* count for keys needing tailroom space allocation */ 867 int crypto_tx_tailroom_needed_cnt; 868 int crypto_tx_tailroom_pending_dec; 869 struct delayed_work dec_tailroom_needed_wk; 870 871 struct net_device *dev; 872 struct ieee80211_local *local; 873 874 unsigned int flags; 875 876 unsigned long state; 877 878 char name[IFNAMSIZ]; 879 880 /* Fragment table for host-based reassembly */ 881 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 882 unsigned int fragment_next; 883 884 /* TID bitmap for NoAck policy */ 885 u16 noack_map; 886 887 /* bit field of ACM bits (BIT(802.1D tag)) */ 888 u8 wmm_acm; 889 890 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 891 struct ieee80211_key __rcu *default_unicast_key; 892 struct ieee80211_key __rcu *default_multicast_key; 893 struct ieee80211_key __rcu *default_mgmt_key; 894 895 u16 sequence_number; 896 __be16 control_port_protocol; 897 bool control_port_no_encrypt; 898 int encrypt_headroom; 899 900 atomic_t num_tx_queued; 901 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 902 struct mac80211_qos_map __rcu *qos_map; 903 904 struct work_struct csa_finalize_work; 905 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 906 struct cfg80211_chan_def csa_chandef; 907 908 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 909 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 910 911 /* context reservation -- protected with chanctx_mtx */ 912 struct ieee80211_chanctx *reserved_chanctx; 913 struct cfg80211_chan_def reserved_chandef; 914 bool reserved_radar_required; 915 bool reserved_ready; 916 917 /* used to reconfigure hardware SM PS */ 918 struct work_struct recalc_smps; 919 920 struct work_struct work; 921 struct sk_buff_head skb_queue; 922 923 u8 needed_rx_chains; 924 enum ieee80211_smps_mode smps_mode; 925 926 int user_power_level; /* in dBm */ 927 int ap_power_level; /* in dBm */ 928 929 bool radar_required; 930 struct delayed_work dfs_cac_timer_work; 931 932 /* 933 * AP this belongs to: self in AP mode and 934 * corresponding AP in VLAN mode, NULL for 935 * all others (might be needed later in IBSS) 936 */ 937 struct ieee80211_if_ap *bss; 938 939 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 940 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 941 942 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 943 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 944 945 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 946 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 947 948 union { 949 struct ieee80211_if_ap ap; 950 struct ieee80211_if_wds wds; 951 struct ieee80211_if_vlan vlan; 952 struct ieee80211_if_managed mgd; 953 struct ieee80211_if_ibss ibss; 954 struct ieee80211_if_mesh mesh; 955 struct ieee80211_if_ocb ocb; 956 struct ieee80211_if_mntr mntr; 957 struct ieee80211_if_nan nan; 958 } u; 959 960 #ifdef CONFIG_MAC80211_DEBUGFS 961 struct { 962 struct dentry *subdir_stations; 963 struct dentry *default_unicast_key; 964 struct dentry *default_multicast_key; 965 struct dentry *default_mgmt_key; 966 } debugfs; 967 #endif 968 969 /* must be last, dynamically sized area in this! */ 970 struct ieee80211_vif vif; 971 }; 972 973 static inline 974 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 975 { 976 return container_of(p, struct ieee80211_sub_if_data, vif); 977 } 978 979 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 980 __acquires(&sdata->wdev.mtx) 981 { 982 mutex_lock(&sdata->wdev.mtx); 983 __acquire(&sdata->wdev.mtx); 984 } 985 986 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 987 __releases(&sdata->wdev.mtx) 988 { 989 mutex_unlock(&sdata->wdev.mtx); 990 __release(&sdata->wdev.mtx); 991 } 992 993 #define sdata_dereference(p, sdata) \ 994 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 995 996 static inline void 997 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 998 { 999 lockdep_assert_held(&sdata->wdev.mtx); 1000 } 1001 1002 static inline enum nl80211_band 1003 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 1004 { 1005 enum nl80211_band band = NL80211_BAND_2GHZ; 1006 struct ieee80211_chanctx_conf *chanctx_conf; 1007 1008 rcu_read_lock(); 1009 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1010 if (!WARN_ON(!chanctx_conf)) 1011 band = chanctx_conf->def.chan->band; 1012 rcu_read_unlock(); 1013 1014 return band; 1015 } 1016 1017 static inline int 1018 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1019 { 1020 switch (chandef->width) { 1021 case NL80211_CHAN_WIDTH_5: 1022 return 2; 1023 case NL80211_CHAN_WIDTH_10: 1024 return 1; 1025 default: 1026 return 0; 1027 } 1028 } 1029 1030 static inline int 1031 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1032 { 1033 struct ieee80211_chanctx_conf *chanctx_conf; 1034 int shift = 0; 1035 1036 rcu_read_lock(); 1037 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1038 if (chanctx_conf) 1039 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1040 rcu_read_unlock(); 1041 1042 return shift; 1043 } 1044 1045 struct ieee80211_rx_agg { 1046 u8 addr[ETH_ALEN]; 1047 u16 tid; 1048 }; 1049 1050 enum sdata_queue_type { 1051 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1052 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1053 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1054 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1055 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1056 }; 1057 1058 enum { 1059 IEEE80211_RX_MSG = 1, 1060 IEEE80211_TX_STATUS_MSG = 2, 1061 }; 1062 1063 enum queue_stop_reason { 1064 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1065 IEEE80211_QUEUE_STOP_REASON_PS, 1066 IEEE80211_QUEUE_STOP_REASON_CSA, 1067 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1068 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1069 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1070 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1071 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1072 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1073 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1074 1075 IEEE80211_QUEUE_STOP_REASONS, 1076 }; 1077 1078 #ifdef CONFIG_MAC80211_LEDS 1079 struct tpt_led_trigger { 1080 char name[32]; 1081 const struct ieee80211_tpt_blink *blink_table; 1082 unsigned int blink_table_len; 1083 struct timer_list timer; 1084 unsigned long prev_traffic; 1085 unsigned long tx_bytes, rx_bytes; 1086 unsigned int active, want; 1087 bool running; 1088 }; 1089 #endif 1090 1091 /** 1092 * mac80211 scan flags - currently active scan mode 1093 * 1094 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1095 * well be on the operating channel 1096 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1097 * determine if we are on the operating channel or not 1098 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1099 * channel. This should not interrupt normal traffic. 1100 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1101 * that the scan completed. 1102 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1103 * a scan complete for an aborted scan. 1104 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1105 * cancelled. 1106 */ 1107 enum { 1108 SCAN_SW_SCANNING, 1109 SCAN_HW_SCANNING, 1110 SCAN_ONCHANNEL_SCANNING, 1111 SCAN_COMPLETED, 1112 SCAN_ABORTED, 1113 SCAN_HW_CANCELLED, 1114 }; 1115 1116 /** 1117 * enum mac80211_scan_state - scan state machine states 1118 * 1119 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1120 * determines if we should keep on scanning or switch back to the 1121 * operating channel 1122 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1123 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1124 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1125 * send out data 1126 * @SCAN_RESUME: Resume the scan and scan the next channel 1127 * @SCAN_ABORT: Abort the scan and go back to operating channel 1128 */ 1129 enum mac80211_scan_state { 1130 SCAN_DECISION, 1131 SCAN_SET_CHANNEL, 1132 SCAN_SEND_PROBE, 1133 SCAN_SUSPEND, 1134 SCAN_RESUME, 1135 SCAN_ABORT, 1136 }; 1137 1138 struct ieee80211_local { 1139 /* embed the driver visible part. 1140 * don't cast (use the static inlines below), but we keep 1141 * it first anyway so they become a no-op */ 1142 struct ieee80211_hw hw; 1143 1144 struct fq fq; 1145 struct codel_vars *cvars; 1146 struct codel_params cparams; 1147 1148 const struct ieee80211_ops *ops; 1149 1150 /* 1151 * private workqueue to mac80211. mac80211 makes this accessible 1152 * via ieee80211_queue_work() 1153 */ 1154 struct workqueue_struct *workqueue; 1155 1156 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1157 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1158 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1159 spinlock_t queue_stop_reason_lock; 1160 1161 int open_count; 1162 int monitors, cooked_mntrs; 1163 /* number of interfaces with corresponding FIF_ flags */ 1164 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1165 fif_probe_req; 1166 int probe_req_reg; 1167 unsigned int filter_flags; /* FIF_* */ 1168 1169 bool wiphy_ciphers_allocated; 1170 1171 bool use_chanctx; 1172 1173 /* protects the aggregated multicast list and filter calls */ 1174 spinlock_t filter_lock; 1175 1176 /* used for uploading changed mc list */ 1177 struct work_struct reconfig_filter; 1178 1179 /* aggregated multicast list */ 1180 struct netdev_hw_addr_list mc_list; 1181 1182 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1183 1184 /* 1185 * suspended is true if we finished all the suspend _and_ we have 1186 * not yet come up from resume. This is to be used by mac80211 1187 * to ensure driver sanity during suspend and mac80211's own 1188 * sanity. It can eventually be used for WoW as well. 1189 */ 1190 bool suspended; 1191 1192 /* 1193 * Resuming is true while suspended, but when we're reprogramming the 1194 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1195 * again even though some other parts of the stack are still suspended 1196 * and we still drop received frames to avoid waking the stack. 1197 */ 1198 bool resuming; 1199 1200 /* 1201 * quiescing is true during the suspend process _only_ to 1202 * ease timer cancelling etc. 1203 */ 1204 bool quiescing; 1205 1206 /* device is started */ 1207 bool started; 1208 1209 /* device is during a HW reconfig */ 1210 bool in_reconfig; 1211 1212 /* wowlan is enabled -- don't reconfig on resume */ 1213 bool wowlan; 1214 1215 struct work_struct radar_detected_work; 1216 1217 /* number of RX chains the hardware has */ 1218 u8 rx_chains; 1219 1220 int tx_headroom; /* required headroom for hardware/radiotap */ 1221 1222 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1223 * added to skb_queue will be processed, but frames in 1224 * skb_queue_unreliable may be dropped if the total length of these 1225 * queues increases over the limit. */ 1226 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1227 struct tasklet_struct tasklet; 1228 struct sk_buff_head skb_queue; 1229 struct sk_buff_head skb_queue_unreliable; 1230 1231 spinlock_t rx_path_lock; 1232 1233 /* Station data */ 1234 /* 1235 * The mutex only protects the list, hash table and 1236 * counter, reads are done with RCU. 1237 */ 1238 struct mutex sta_mtx; 1239 spinlock_t tim_lock; 1240 unsigned long num_sta; 1241 struct list_head sta_list; 1242 struct rhltable sta_hash; 1243 struct timer_list sta_cleanup; 1244 int sta_generation; 1245 1246 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1247 struct tasklet_struct tx_pending_tasklet; 1248 1249 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1250 1251 /* number of interfaces with allmulti RX */ 1252 atomic_t iff_allmultis; 1253 1254 struct rate_control_ref *rate_ctrl; 1255 1256 struct crypto_cipher *wep_tx_tfm; 1257 struct crypto_cipher *wep_rx_tfm; 1258 u32 wep_iv; 1259 1260 /* see iface.c */ 1261 struct list_head interfaces; 1262 struct mutex iflist_mtx; 1263 1264 /* 1265 * Key mutex, protects sdata's key_list and sta_info's 1266 * key pointers (write access, they're RCU.) 1267 */ 1268 struct mutex key_mtx; 1269 1270 /* mutex for scan and work locking */ 1271 struct mutex mtx; 1272 1273 /* Scanning and BSS list */ 1274 unsigned long scanning; 1275 struct cfg80211_ssid scan_ssid; 1276 struct cfg80211_scan_request *int_scan_req; 1277 struct cfg80211_scan_request __rcu *scan_req; 1278 struct ieee80211_scan_request *hw_scan_req; 1279 struct cfg80211_chan_def scan_chandef; 1280 enum nl80211_band hw_scan_band; 1281 int scan_channel_idx; 1282 int scan_ies_len; 1283 int hw_scan_ies_bufsize; 1284 struct cfg80211_scan_info scan_info; 1285 1286 struct work_struct sched_scan_stopped_work; 1287 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1288 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1289 u8 scan_addr[ETH_ALEN]; 1290 1291 unsigned long leave_oper_channel_time; 1292 enum mac80211_scan_state next_scan_state; 1293 struct delayed_work scan_work; 1294 struct ieee80211_sub_if_data __rcu *scan_sdata; 1295 /* For backward compatibility only -- do not use */ 1296 struct cfg80211_chan_def _oper_chandef; 1297 1298 /* Temporary remain-on-channel for off-channel operations */ 1299 struct ieee80211_channel *tmp_channel; 1300 1301 /* channel contexts */ 1302 struct list_head chanctx_list; 1303 struct mutex chanctx_mtx; 1304 1305 #ifdef CONFIG_MAC80211_LEDS 1306 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1307 struct led_trigger tpt_led; 1308 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1309 atomic_t radio_led_active, tpt_led_active; 1310 struct tpt_led_trigger *tpt_led_trigger; 1311 #endif 1312 1313 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1314 /* SNMP counters */ 1315 /* dot11CountersTable */ 1316 u32 dot11TransmittedFragmentCount; 1317 u32 dot11MulticastTransmittedFrameCount; 1318 u32 dot11FailedCount; 1319 u32 dot11RetryCount; 1320 u32 dot11MultipleRetryCount; 1321 u32 dot11FrameDuplicateCount; 1322 u32 dot11ReceivedFragmentCount; 1323 u32 dot11MulticastReceivedFrameCount; 1324 u32 dot11TransmittedFrameCount; 1325 1326 /* TX/RX handler statistics */ 1327 unsigned int tx_handlers_drop; 1328 unsigned int tx_handlers_queued; 1329 unsigned int tx_handlers_drop_wep; 1330 unsigned int tx_handlers_drop_not_assoc; 1331 unsigned int tx_handlers_drop_unauth_port; 1332 unsigned int rx_handlers_drop; 1333 unsigned int rx_handlers_queued; 1334 unsigned int rx_handlers_drop_nullfunc; 1335 unsigned int rx_handlers_drop_defrag; 1336 unsigned int tx_expand_skb_head; 1337 unsigned int tx_expand_skb_head_cloned; 1338 unsigned int rx_expand_skb_head_defrag; 1339 unsigned int rx_handlers_fragments; 1340 unsigned int tx_status_drop; 1341 #define I802_DEBUG_INC(c) (c)++ 1342 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1343 #define I802_DEBUG_INC(c) do { } while (0) 1344 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1345 1346 1347 int total_ps_buffered; /* total number of all buffered unicast and 1348 * multicast packets for power saving stations 1349 */ 1350 1351 bool pspolling; 1352 bool offchannel_ps_enabled; 1353 /* 1354 * PS can only be enabled when we have exactly one managed 1355 * interface (and monitors) in PS, this then points there. 1356 */ 1357 struct ieee80211_sub_if_data *ps_sdata; 1358 struct work_struct dynamic_ps_enable_work; 1359 struct work_struct dynamic_ps_disable_work; 1360 struct timer_list dynamic_ps_timer; 1361 struct notifier_block ifa_notifier; 1362 struct notifier_block ifa6_notifier; 1363 1364 /* 1365 * The dynamic ps timeout configured from user space via WEXT - 1366 * this will override whatever chosen by mac80211 internally. 1367 */ 1368 int dynamic_ps_forced_timeout; 1369 1370 int user_power_level; /* in dBm, for all interfaces */ 1371 1372 enum ieee80211_smps_mode smps_mode; 1373 1374 struct work_struct restart_work; 1375 1376 #ifdef CONFIG_MAC80211_DEBUGFS 1377 struct local_debugfsdentries { 1378 struct dentry *rcdir; 1379 struct dentry *keys; 1380 } debugfs; 1381 #endif 1382 1383 /* 1384 * Remain-on-channel support 1385 */ 1386 struct delayed_work roc_work; 1387 struct list_head roc_list; 1388 struct work_struct hw_roc_start, hw_roc_done; 1389 unsigned long hw_roc_start_time; 1390 u64 roc_cookie_counter; 1391 1392 struct idr ack_status_frames; 1393 spinlock_t ack_status_lock; 1394 1395 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1396 1397 /* virtual monitor interface */ 1398 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1399 struct cfg80211_chan_def monitor_chandef; 1400 1401 /* extended capabilities provided by mac80211 */ 1402 u8 ext_capa[8]; 1403 1404 /* TDLS channel switch */ 1405 struct work_struct tdls_chsw_work; 1406 struct sk_buff_head skb_queue_tdls_chsw; 1407 }; 1408 1409 static inline struct ieee80211_sub_if_data * 1410 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1411 { 1412 return netdev_priv(dev); 1413 } 1414 1415 static inline struct ieee80211_sub_if_data * 1416 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1417 { 1418 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1419 } 1420 1421 /* this struct represents 802.11n's RA/TID combination */ 1422 struct ieee80211_ra_tid { 1423 u8 ra[ETH_ALEN]; 1424 u16 tid; 1425 }; 1426 1427 /* this struct holds the value parsing from channel switch IE */ 1428 struct ieee80211_csa_ie { 1429 struct cfg80211_chan_def chandef; 1430 u8 mode; 1431 u8 count; 1432 u8 ttl; 1433 u16 pre_value; 1434 }; 1435 1436 /* Parsed Information Elements */ 1437 struct ieee802_11_elems { 1438 const u8 *ie_start; 1439 size_t total_len; 1440 1441 /* pointers to IEs */ 1442 const struct ieee80211_tdls_lnkie *lnk_id; 1443 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1444 const u8 *ext_capab; 1445 const u8 *ssid; 1446 const u8 *supp_rates; 1447 const u8 *ds_params; 1448 const struct ieee80211_tim_ie *tim; 1449 const u8 *challenge; 1450 const u8 *rsn; 1451 const u8 *erp_info; 1452 const u8 *ext_supp_rates; 1453 const u8 *wmm_info; 1454 const u8 *wmm_param; 1455 const struct ieee80211_ht_cap *ht_cap_elem; 1456 const struct ieee80211_ht_operation *ht_operation; 1457 const struct ieee80211_vht_cap *vht_cap_elem; 1458 const struct ieee80211_vht_operation *vht_operation; 1459 const struct ieee80211_meshconf_ie *mesh_config; 1460 const u8 *mesh_id; 1461 const u8 *peering; 1462 const __le16 *awake_window; 1463 const u8 *preq; 1464 const u8 *prep; 1465 const u8 *perr; 1466 const struct ieee80211_rann_ie *rann; 1467 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1468 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1469 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1470 const u8 *country_elem; 1471 const u8 *pwr_constr_elem; 1472 const u8 *cisco_dtpc_elem; 1473 const struct ieee80211_timeout_interval_ie *timeout_int; 1474 const u8 *opmode_notif; 1475 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1476 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1477 1478 /* length of them, respectively */ 1479 u8 ext_capab_len; 1480 u8 ssid_len; 1481 u8 supp_rates_len; 1482 u8 tim_len; 1483 u8 challenge_len; 1484 u8 rsn_len; 1485 u8 ext_supp_rates_len; 1486 u8 wmm_info_len; 1487 u8 wmm_param_len; 1488 u8 mesh_id_len; 1489 u8 peering_len; 1490 u8 preq_len; 1491 u8 prep_len; 1492 u8 perr_len; 1493 u8 country_elem_len; 1494 1495 /* whether a parse error occurred while retrieving these elements */ 1496 bool parse_error; 1497 }; 1498 1499 static inline struct ieee80211_local *hw_to_local( 1500 struct ieee80211_hw *hw) 1501 { 1502 return container_of(hw, struct ieee80211_local, hw); 1503 } 1504 1505 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1506 { 1507 return container_of(txq, struct txq_info, txq); 1508 } 1509 1510 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1511 { 1512 struct txq_info *txqi = to_txq_info(txq); 1513 1514 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1515 } 1516 1517 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1518 { 1519 return ether_addr_equal(raddr, addr) || 1520 is_broadcast_ether_addr(raddr); 1521 } 1522 1523 static inline bool 1524 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1525 { 1526 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1527 status->flag & RX_FLAG_MACTIME_END); 1528 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1529 return true; 1530 /* can't handle HT/VHT preamble yet */ 1531 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1532 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT))) 1533 return true; 1534 return false; 1535 } 1536 1537 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1538 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1539 1540 /* This function returns the number of multicast stations connected to this 1541 * interface. It returns -1 if that number is not tracked, that is for netdevs 1542 * not in AP or AP_VLAN mode or when using 4addr. 1543 */ 1544 static inline int 1545 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1546 { 1547 if (sdata->vif.type == NL80211_IFTYPE_AP) 1548 return atomic_read(&sdata->u.ap.num_mcast_sta); 1549 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1550 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1551 return -1; 1552 } 1553 1554 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1555 struct ieee80211_rx_status *status, 1556 unsigned int mpdu_len, 1557 unsigned int mpdu_offset); 1558 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1559 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1560 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1561 u32 changed); 1562 void ieee80211_configure_filter(struct ieee80211_local *local); 1563 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1564 1565 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1566 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1567 u64 *cookie, gfp_t gfp); 1568 1569 void ieee80211_check_fast_rx(struct sta_info *sta); 1570 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1571 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1572 void ieee80211_clear_fast_rx(struct sta_info *sta); 1573 1574 /* STA code */ 1575 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1576 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1577 struct cfg80211_auth_request *req); 1578 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1579 struct cfg80211_assoc_request *req); 1580 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1581 struct cfg80211_deauth_request *req); 1582 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1583 struct cfg80211_disassoc_request *req); 1584 void ieee80211_send_pspoll(struct ieee80211_local *local, 1585 struct ieee80211_sub_if_data *sdata); 1586 void ieee80211_recalc_ps(struct ieee80211_local *local); 1587 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1588 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1589 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1590 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1591 struct sk_buff *skb); 1592 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1593 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1594 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1596 __le16 fc, bool acked); 1597 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1598 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1599 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1600 1601 /* IBSS code */ 1602 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1603 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1604 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1605 const u8 *bssid, const u8 *addr, u32 supp_rates); 1606 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1607 struct cfg80211_ibss_params *params); 1608 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1609 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1610 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1611 struct sk_buff *skb); 1612 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1613 struct cfg80211_csa_settings *csa_settings); 1614 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1615 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1616 1617 /* OCB code */ 1618 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1619 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1620 const u8 *bssid, const u8 *addr, u32 supp_rates); 1621 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1622 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1623 struct ocb_setup *setup); 1624 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1625 1626 /* mesh code */ 1627 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1628 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1629 struct sk_buff *skb); 1630 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1631 struct cfg80211_csa_settings *csa_settings); 1632 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1633 1634 /* scan/BSS handling */ 1635 void ieee80211_scan_work(struct work_struct *work); 1636 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1637 const u8 *ssid, u8 ssid_len, 1638 struct ieee80211_channel **channels, 1639 unsigned int n_channels, 1640 enum nl80211_bss_scan_width scan_width); 1641 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1642 struct cfg80211_scan_request *req); 1643 void ieee80211_scan_cancel(struct ieee80211_local *local); 1644 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1645 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1646 1647 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1648 struct ieee80211_bss * 1649 ieee80211_bss_info_update(struct ieee80211_local *local, 1650 struct ieee80211_rx_status *rx_status, 1651 struct ieee80211_mgmt *mgmt, 1652 size_t len, 1653 struct ieee802_11_elems *elems, 1654 struct ieee80211_channel *channel); 1655 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1656 struct ieee80211_bss *bss); 1657 1658 /* scheduled scan handling */ 1659 int 1660 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1661 struct cfg80211_sched_scan_request *req); 1662 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1663 struct cfg80211_sched_scan_request *req); 1664 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1665 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1666 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1667 1668 /* off-channel/mgmt-tx */ 1669 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1670 void ieee80211_offchannel_return(struct ieee80211_local *local); 1671 void ieee80211_roc_setup(struct ieee80211_local *local); 1672 void ieee80211_start_next_roc(struct ieee80211_local *local); 1673 void ieee80211_roc_purge(struct ieee80211_local *local, 1674 struct ieee80211_sub_if_data *sdata); 1675 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1676 struct ieee80211_channel *chan, 1677 unsigned int duration, u64 *cookie); 1678 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1679 struct wireless_dev *wdev, u64 cookie); 1680 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1681 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1682 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1683 struct wireless_dev *wdev, u64 cookie); 1684 1685 /* channel switch handling */ 1686 void ieee80211_csa_finalize_work(struct work_struct *work); 1687 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1688 struct cfg80211_csa_settings *params); 1689 1690 /* interface handling */ 1691 int ieee80211_iface_init(void); 1692 void ieee80211_iface_exit(void); 1693 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1694 unsigned char name_assign_type, 1695 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1696 struct vif_params *params); 1697 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1698 enum nl80211_iftype type); 1699 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1700 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1701 u32 ieee80211_idle_off(struct ieee80211_local *local); 1702 void ieee80211_recalc_idle(struct ieee80211_local *local); 1703 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1704 const int offset); 1705 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1706 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1707 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1708 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1709 1710 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1711 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1712 bool update_bss); 1713 1714 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1715 { 1716 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1717 } 1718 1719 /* tx handling */ 1720 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1721 void ieee80211_tx_pending(unsigned long data); 1722 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1723 struct net_device *dev); 1724 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1725 struct net_device *dev); 1726 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1727 struct net_device *dev, 1728 u32 info_flags); 1729 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1730 struct sk_buff_head *skbs); 1731 struct sk_buff * 1732 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1733 struct sk_buff *skb, u32 info_flags); 1734 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1735 struct ieee80211_supported_band *sband, 1736 int retry_count, int shift, bool send_to_cooked); 1737 1738 void ieee80211_check_fast_xmit(struct sta_info *sta); 1739 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1740 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1741 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1742 1743 /* HT */ 1744 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1745 struct ieee80211_sta_ht_cap *ht_cap); 1746 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1747 struct ieee80211_supported_band *sband, 1748 const struct ieee80211_ht_cap *ht_cap_ie, 1749 struct sta_info *sta); 1750 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1751 const u8 *da, u16 tid, 1752 u16 initiator, u16 reason_code); 1753 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1754 enum ieee80211_smps_mode smps, const u8 *da, 1755 const u8 *bssid); 1756 void ieee80211_request_smps_ap_work(struct work_struct *work); 1757 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1758 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1759 enum ieee80211_smps_mode smps_mode_new); 1760 1761 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1762 u16 initiator, u16 reason, bool stop); 1763 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1764 u16 initiator, u16 reason, bool stop); 1765 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1766 u8 dialog_token, u16 timeout, 1767 u16 start_seq_num, u16 ba_policy, u16 tid, 1768 u16 buf_size, bool tx, bool auto_seq); 1769 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1770 enum ieee80211_agg_stop_reason reason); 1771 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1772 struct sta_info *sta, 1773 struct ieee80211_mgmt *mgmt, size_t len); 1774 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1775 struct sta_info *sta, 1776 struct ieee80211_mgmt *mgmt, 1777 size_t len); 1778 void ieee80211_process_addba_request(struct ieee80211_local *local, 1779 struct sta_info *sta, 1780 struct ieee80211_mgmt *mgmt, 1781 size_t len); 1782 1783 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1784 enum ieee80211_agg_stop_reason reason); 1785 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1786 enum ieee80211_agg_stop_reason reason); 1787 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1788 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 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 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2057 u32 cap); 2058 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2059 const struct cfg80211_chan_def *chandef); 2060 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2061 const struct ieee80211_supported_band *sband, 2062 const u8 *srates, int srates_len, u32 *rates); 2063 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2064 struct sk_buff *skb, bool need_basic, 2065 enum nl80211_band band); 2066 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2067 struct sk_buff *skb, bool need_basic, 2068 enum nl80211_band band); 2069 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2070 2071 /* channel management */ 2072 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2073 struct cfg80211_chan_def *chandef); 2074 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2075 struct cfg80211_chan_def *chandef); 2076 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2077 2078 int __must_check 2079 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2080 const struct cfg80211_chan_def *chandef, 2081 enum ieee80211_chanctx_mode mode); 2082 int __must_check 2083 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2084 const struct cfg80211_chan_def *chandef, 2085 enum ieee80211_chanctx_mode mode, 2086 bool radar_required); 2087 int __must_check 2088 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2089 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2090 2091 int __must_check 2092 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2093 const struct cfg80211_chan_def *chandef, 2094 u32 *changed); 2095 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2096 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2097 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2098 bool clear); 2099 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2100 struct ieee80211_chanctx *ctx); 2101 2102 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2103 struct ieee80211_chanctx *chanctx); 2104 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2105 struct ieee80211_chanctx *ctx); 2106 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2107 2108 void ieee80211_dfs_cac_timer(unsigned long data); 2109 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2110 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2111 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2112 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2113 struct cfg80211_csa_settings *csa_settings); 2114 2115 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2116 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2117 const struct ieee80211_cipher_scheme * 2118 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2119 enum nl80211_iftype iftype); 2120 int ieee80211_cs_headroom(struct ieee80211_local *local, 2121 struct cfg80211_crypto_settings *crypto, 2122 enum nl80211_iftype iftype); 2123 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2124 struct ieee80211_sub_if_data *sdata); 2125 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2126 const struct cfg80211_chan_def *chandef, 2127 enum ieee80211_chanctx_mode chanmode, 2128 u8 radar_detect); 2129 int ieee80211_max_num_channels(struct ieee80211_local *local); 2130 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2131 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2132 struct ieee80211_chanctx *ctx); 2133 2134 /* TDLS */ 2135 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2136 const u8 *peer, u8 action_code, u8 dialog_token, 2137 u16 status_code, u32 peer_capability, 2138 bool initiator, const u8 *extra_ies, 2139 size_t extra_ies_len); 2140 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2141 const u8 *peer, enum nl80211_tdls_operation oper); 2142 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2143 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2144 const u8 *addr, u8 oper_class, 2145 struct cfg80211_chan_def *chandef); 2146 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2147 struct net_device *dev, 2148 const u8 *addr); 2149 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2150 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2151 2152 extern const struct ethtool_ops ieee80211_ethtool_ops; 2153 2154 #ifdef CONFIG_MAC80211_NOINLINE 2155 #define debug_noinline noinline 2156 #else 2157 #define debug_noinline 2158 #endif 2159 2160 #endif /* IEEE80211_I_H */ 2161