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 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 647 size_t mesh_id_len; 648 /* Active Path Selection Protocol Identifier */ 649 u8 mesh_pp_id; 650 /* Active Path Selection Metric Identifier */ 651 u8 mesh_pm_id; 652 /* Congestion Control Mode Identifier */ 653 u8 mesh_cc_id; 654 /* Synchronization Protocol Identifier */ 655 u8 mesh_sp_id; 656 /* Authentication Protocol Identifier */ 657 u8 mesh_auth_id; 658 /* Local mesh Sequence Number */ 659 u32 sn; 660 /* Last used PREQ ID */ 661 u32 preq_id; 662 atomic_t mpaths; 663 /* Timestamp of last SN update */ 664 unsigned long last_sn_update; 665 /* Time when it's ok to send next PERR */ 666 unsigned long next_perr; 667 /* Timestamp of last PREQ sent */ 668 unsigned long last_preq; 669 struct mesh_rmc *rmc; 670 spinlock_t mesh_preq_queue_lock; 671 struct mesh_preq_queue preq_queue; 672 int preq_queue_len; 673 struct mesh_stats mshstats; 674 struct mesh_config mshcfg; 675 atomic_t estab_plinks; 676 u32 mesh_seqnum; 677 bool accepting_plinks; 678 int num_gates; 679 struct beacon_data __rcu *beacon; 680 const u8 *ie; 681 u8 ie_len; 682 enum { 683 IEEE80211_MESH_SEC_NONE = 0x0, 684 IEEE80211_MESH_SEC_AUTHED = 0x1, 685 IEEE80211_MESH_SEC_SECURED = 0x2, 686 } security; 687 bool user_mpm; 688 /* Extensible Synchronization Framework */ 689 const struct ieee80211_mesh_sync_ops *sync_ops; 690 s64 sync_offset_clockdrift_max; 691 spinlock_t sync_offset_lock; 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 struct list_head list; 844 }; 845 846 /** 847 * struct ieee80211_if_nan - NAN state 848 * 849 * @conf: current NAN configuration 850 * @func_ids: a bitmap of available instance_id's 851 */ 852 struct ieee80211_if_nan { 853 struct cfg80211_nan_conf conf; 854 855 /* protects function_inst_ids */ 856 spinlock_t func_lock; 857 struct idr function_inst_ids; 858 }; 859 860 struct ieee80211_sub_if_data { 861 struct list_head list; 862 863 struct wireless_dev wdev; 864 865 /* keys */ 866 struct list_head key_list; 867 868 /* count for keys needing tailroom space allocation */ 869 int crypto_tx_tailroom_needed_cnt; 870 int crypto_tx_tailroom_pending_dec; 871 struct delayed_work dec_tailroom_needed_wk; 872 873 struct net_device *dev; 874 struct ieee80211_local *local; 875 876 unsigned int flags; 877 878 unsigned long state; 879 880 char name[IFNAMSIZ]; 881 882 /* Fragment table for host-based reassembly */ 883 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 884 unsigned int fragment_next; 885 886 /* TID bitmap for NoAck policy */ 887 u16 noack_map; 888 889 /* bit field of ACM bits (BIT(802.1D tag)) */ 890 u8 wmm_acm; 891 892 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 893 struct ieee80211_key __rcu *default_unicast_key; 894 struct ieee80211_key __rcu *default_multicast_key; 895 struct ieee80211_key __rcu *default_mgmt_key; 896 897 u16 sequence_number; 898 __be16 control_port_protocol; 899 bool control_port_no_encrypt; 900 int encrypt_headroom; 901 902 atomic_t num_tx_queued; 903 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 904 struct mac80211_qos_map __rcu *qos_map; 905 906 struct work_struct csa_finalize_work; 907 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 908 struct cfg80211_chan_def csa_chandef; 909 910 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 911 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 912 913 /* context reservation -- protected with chanctx_mtx */ 914 struct ieee80211_chanctx *reserved_chanctx; 915 struct cfg80211_chan_def reserved_chandef; 916 bool reserved_radar_required; 917 bool reserved_ready; 918 919 /* used to reconfigure hardware SM PS */ 920 struct work_struct recalc_smps; 921 922 struct work_struct work; 923 struct sk_buff_head skb_queue; 924 925 u8 needed_rx_chains; 926 enum ieee80211_smps_mode smps_mode; 927 928 int user_power_level; /* in dBm */ 929 int ap_power_level; /* in dBm */ 930 931 bool radar_required; 932 struct delayed_work dfs_cac_timer_work; 933 934 /* 935 * AP this belongs to: self in AP mode and 936 * corresponding AP in VLAN mode, NULL for 937 * all others (might be needed later in IBSS) 938 */ 939 struct ieee80211_if_ap *bss; 940 941 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 942 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 943 944 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 945 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 946 947 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 948 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 949 950 union { 951 struct ieee80211_if_ap ap; 952 struct ieee80211_if_wds wds; 953 struct ieee80211_if_vlan vlan; 954 struct ieee80211_if_managed mgd; 955 struct ieee80211_if_ibss ibss; 956 struct ieee80211_if_mesh mesh; 957 struct ieee80211_if_ocb ocb; 958 struct ieee80211_if_mntr mntr; 959 struct ieee80211_if_nan nan; 960 } u; 961 962 #ifdef CONFIG_MAC80211_DEBUGFS 963 struct { 964 struct dentry *subdir_stations; 965 struct dentry *default_unicast_key; 966 struct dentry *default_multicast_key; 967 struct dentry *default_mgmt_key; 968 } debugfs; 969 #endif 970 971 /* must be last, dynamically sized area in this! */ 972 struct ieee80211_vif vif; 973 }; 974 975 static inline 976 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 977 { 978 return container_of(p, struct ieee80211_sub_if_data, vif); 979 } 980 981 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 982 __acquires(&sdata->wdev.mtx) 983 { 984 mutex_lock(&sdata->wdev.mtx); 985 __acquire(&sdata->wdev.mtx); 986 } 987 988 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 989 __releases(&sdata->wdev.mtx) 990 { 991 mutex_unlock(&sdata->wdev.mtx); 992 __release(&sdata->wdev.mtx); 993 } 994 995 #define sdata_dereference(p, sdata) \ 996 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 997 998 static inline void 999 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1000 { 1001 lockdep_assert_held(&sdata->wdev.mtx); 1002 } 1003 1004 static inline int 1005 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1006 { 1007 switch (chandef->width) { 1008 case NL80211_CHAN_WIDTH_5: 1009 return 2; 1010 case NL80211_CHAN_WIDTH_10: 1011 return 1; 1012 default: 1013 return 0; 1014 } 1015 } 1016 1017 static inline int 1018 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1019 { 1020 struct ieee80211_chanctx_conf *chanctx_conf; 1021 int shift = 0; 1022 1023 rcu_read_lock(); 1024 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1025 if (chanctx_conf) 1026 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1027 rcu_read_unlock(); 1028 1029 return shift; 1030 } 1031 1032 struct ieee80211_rx_agg { 1033 u8 addr[ETH_ALEN]; 1034 u16 tid; 1035 }; 1036 1037 enum sdata_queue_type { 1038 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1039 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1040 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1041 }; 1042 1043 enum { 1044 IEEE80211_RX_MSG = 1, 1045 IEEE80211_TX_STATUS_MSG = 2, 1046 }; 1047 1048 enum queue_stop_reason { 1049 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1050 IEEE80211_QUEUE_STOP_REASON_PS, 1051 IEEE80211_QUEUE_STOP_REASON_CSA, 1052 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1053 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1054 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1055 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1056 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1057 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1058 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1059 1060 IEEE80211_QUEUE_STOP_REASONS, 1061 }; 1062 1063 #ifdef CONFIG_MAC80211_LEDS 1064 struct tpt_led_trigger { 1065 char name[32]; 1066 const struct ieee80211_tpt_blink *blink_table; 1067 unsigned int blink_table_len; 1068 struct timer_list timer; 1069 unsigned long prev_traffic; 1070 unsigned long tx_bytes, rx_bytes; 1071 unsigned int active, want; 1072 bool running; 1073 }; 1074 #endif 1075 1076 /** 1077 * mac80211 scan flags - currently active scan mode 1078 * 1079 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1080 * well be on the operating channel 1081 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1082 * determine if we are on the operating channel or not 1083 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1084 * channel. This should not interrupt normal traffic. 1085 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1086 * that the scan completed. 1087 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1088 * a scan complete for an aborted scan. 1089 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1090 * cancelled. 1091 */ 1092 enum { 1093 SCAN_SW_SCANNING, 1094 SCAN_HW_SCANNING, 1095 SCAN_ONCHANNEL_SCANNING, 1096 SCAN_COMPLETED, 1097 SCAN_ABORTED, 1098 SCAN_HW_CANCELLED, 1099 }; 1100 1101 /** 1102 * enum mac80211_scan_state - scan state machine states 1103 * 1104 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1105 * determines if we should keep on scanning or switch back to the 1106 * operating channel 1107 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1108 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1109 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1110 * send out data 1111 * @SCAN_RESUME: Resume the scan and scan the next channel 1112 * @SCAN_ABORT: Abort the scan and go back to operating channel 1113 */ 1114 enum mac80211_scan_state { 1115 SCAN_DECISION, 1116 SCAN_SET_CHANNEL, 1117 SCAN_SEND_PROBE, 1118 SCAN_SUSPEND, 1119 SCAN_RESUME, 1120 SCAN_ABORT, 1121 }; 1122 1123 struct ieee80211_local { 1124 /* embed the driver visible part. 1125 * don't cast (use the static inlines below), but we keep 1126 * it first anyway so they become a no-op */ 1127 struct ieee80211_hw hw; 1128 1129 struct fq fq; 1130 struct codel_vars *cvars; 1131 struct codel_params cparams; 1132 1133 const struct ieee80211_ops *ops; 1134 1135 /* 1136 * private workqueue to mac80211. mac80211 makes this accessible 1137 * via ieee80211_queue_work() 1138 */ 1139 struct workqueue_struct *workqueue; 1140 1141 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1142 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1143 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1144 spinlock_t queue_stop_reason_lock; 1145 1146 int open_count; 1147 int monitors, cooked_mntrs; 1148 /* number of interfaces with corresponding FIF_ flags */ 1149 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1150 fif_probe_req; 1151 int probe_req_reg; 1152 unsigned int filter_flags; /* FIF_* */ 1153 1154 bool wiphy_ciphers_allocated; 1155 1156 bool use_chanctx; 1157 1158 /* protects the aggregated multicast list and filter calls */ 1159 spinlock_t filter_lock; 1160 1161 /* used for uploading changed mc list */ 1162 struct work_struct reconfig_filter; 1163 1164 /* aggregated multicast list */ 1165 struct netdev_hw_addr_list mc_list; 1166 1167 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1168 1169 /* 1170 * suspended is true if we finished all the suspend _and_ we have 1171 * not yet come up from resume. This is to be used by mac80211 1172 * to ensure driver sanity during suspend and mac80211's own 1173 * sanity. It can eventually be used for WoW as well. 1174 */ 1175 bool suspended; 1176 1177 /* 1178 * Resuming is true while suspended, but when we're reprogramming the 1179 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1180 * again even though some other parts of the stack are still suspended 1181 * and we still drop received frames to avoid waking the stack. 1182 */ 1183 bool resuming; 1184 1185 /* 1186 * quiescing is true during the suspend process _only_ to 1187 * ease timer cancelling etc. 1188 */ 1189 bool quiescing; 1190 1191 /* device is started */ 1192 bool started; 1193 1194 /* device is during a HW reconfig */ 1195 bool in_reconfig; 1196 1197 /* wowlan is enabled -- don't reconfig on resume */ 1198 bool wowlan; 1199 1200 struct work_struct radar_detected_work; 1201 1202 /* number of RX chains the hardware has */ 1203 u8 rx_chains; 1204 1205 int tx_headroom; /* required headroom for hardware/radiotap */ 1206 1207 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1208 * added to skb_queue will be processed, but frames in 1209 * skb_queue_unreliable may be dropped if the total length of these 1210 * queues increases over the limit. */ 1211 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1212 struct tasklet_struct tasklet; 1213 struct sk_buff_head skb_queue; 1214 struct sk_buff_head skb_queue_unreliable; 1215 1216 spinlock_t rx_path_lock; 1217 1218 /* Station data */ 1219 /* 1220 * The mutex only protects the list, hash table and 1221 * counter, reads are done with RCU. 1222 */ 1223 struct mutex sta_mtx; 1224 spinlock_t tim_lock; 1225 unsigned long num_sta; 1226 struct list_head sta_list; 1227 struct rhltable sta_hash; 1228 struct timer_list sta_cleanup; 1229 int sta_generation; 1230 1231 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1232 struct tasklet_struct tx_pending_tasklet; 1233 1234 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1235 1236 /* number of interfaces with allmulti RX */ 1237 atomic_t iff_allmultis; 1238 1239 struct rate_control_ref *rate_ctrl; 1240 1241 struct crypto_cipher *wep_tx_tfm; 1242 struct crypto_cipher *wep_rx_tfm; 1243 u32 wep_iv; 1244 1245 /* see iface.c */ 1246 struct list_head interfaces; 1247 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1248 struct mutex iflist_mtx; 1249 1250 /* 1251 * Key mutex, protects sdata's key_list and sta_info's 1252 * key pointers (write access, they're RCU.) 1253 */ 1254 struct mutex key_mtx; 1255 1256 /* mutex for scan and work locking */ 1257 struct mutex mtx; 1258 1259 /* Scanning and BSS list */ 1260 unsigned long scanning; 1261 struct cfg80211_ssid scan_ssid; 1262 struct cfg80211_scan_request *int_scan_req; 1263 struct cfg80211_scan_request __rcu *scan_req; 1264 struct ieee80211_scan_request *hw_scan_req; 1265 struct cfg80211_chan_def scan_chandef; 1266 enum nl80211_band hw_scan_band; 1267 int scan_channel_idx; 1268 int scan_ies_len; 1269 int hw_scan_ies_bufsize; 1270 struct cfg80211_scan_info scan_info; 1271 1272 struct work_struct sched_scan_stopped_work; 1273 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1274 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1275 u8 scan_addr[ETH_ALEN]; 1276 1277 unsigned long leave_oper_channel_time; 1278 enum mac80211_scan_state next_scan_state; 1279 struct delayed_work scan_work; 1280 struct ieee80211_sub_if_data __rcu *scan_sdata; 1281 /* For backward compatibility only -- do not use */ 1282 struct cfg80211_chan_def _oper_chandef; 1283 1284 /* Temporary remain-on-channel for off-channel operations */ 1285 struct ieee80211_channel *tmp_channel; 1286 1287 /* channel contexts */ 1288 struct list_head chanctx_list; 1289 struct mutex chanctx_mtx; 1290 1291 #ifdef CONFIG_MAC80211_LEDS 1292 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1293 struct led_trigger tpt_led; 1294 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1295 atomic_t radio_led_active, tpt_led_active; 1296 struct tpt_led_trigger *tpt_led_trigger; 1297 #endif 1298 1299 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1300 /* SNMP counters */ 1301 /* dot11CountersTable */ 1302 u32 dot11TransmittedFragmentCount; 1303 u32 dot11MulticastTransmittedFrameCount; 1304 u32 dot11FailedCount; 1305 u32 dot11RetryCount; 1306 u32 dot11MultipleRetryCount; 1307 u32 dot11FrameDuplicateCount; 1308 u32 dot11ReceivedFragmentCount; 1309 u32 dot11MulticastReceivedFrameCount; 1310 u32 dot11TransmittedFrameCount; 1311 1312 /* TX/RX handler statistics */ 1313 unsigned int tx_handlers_drop; 1314 unsigned int tx_handlers_queued; 1315 unsigned int tx_handlers_drop_wep; 1316 unsigned int tx_handlers_drop_not_assoc; 1317 unsigned int tx_handlers_drop_unauth_port; 1318 unsigned int rx_handlers_drop; 1319 unsigned int rx_handlers_queued; 1320 unsigned int rx_handlers_drop_nullfunc; 1321 unsigned int rx_handlers_drop_defrag; 1322 unsigned int tx_expand_skb_head; 1323 unsigned int tx_expand_skb_head_cloned; 1324 unsigned int rx_expand_skb_head_defrag; 1325 unsigned int rx_handlers_fragments; 1326 unsigned int tx_status_drop; 1327 #define I802_DEBUG_INC(c) (c)++ 1328 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1329 #define I802_DEBUG_INC(c) do { } while (0) 1330 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1331 1332 1333 int total_ps_buffered; /* total number of all buffered unicast and 1334 * multicast packets for power saving stations 1335 */ 1336 1337 bool pspolling; 1338 bool offchannel_ps_enabled; 1339 /* 1340 * PS can only be enabled when we have exactly one managed 1341 * interface (and monitors) in PS, this then points there. 1342 */ 1343 struct ieee80211_sub_if_data *ps_sdata; 1344 struct work_struct dynamic_ps_enable_work; 1345 struct work_struct dynamic_ps_disable_work; 1346 struct timer_list dynamic_ps_timer; 1347 struct notifier_block ifa_notifier; 1348 struct notifier_block ifa6_notifier; 1349 1350 /* 1351 * The dynamic ps timeout configured from user space via WEXT - 1352 * this will override whatever chosen by mac80211 internally. 1353 */ 1354 int dynamic_ps_forced_timeout; 1355 1356 int user_power_level; /* in dBm, for all interfaces */ 1357 1358 enum ieee80211_smps_mode smps_mode; 1359 1360 struct work_struct restart_work; 1361 1362 #ifdef CONFIG_MAC80211_DEBUGFS 1363 struct local_debugfsdentries { 1364 struct dentry *rcdir; 1365 struct dentry *keys; 1366 } debugfs; 1367 #endif 1368 1369 /* 1370 * Remain-on-channel support 1371 */ 1372 struct delayed_work roc_work; 1373 struct list_head roc_list; 1374 struct work_struct hw_roc_start, hw_roc_done; 1375 unsigned long hw_roc_start_time; 1376 u64 roc_cookie_counter; 1377 1378 struct idr ack_status_frames; 1379 spinlock_t ack_status_lock; 1380 1381 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1382 1383 /* virtual monitor interface */ 1384 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1385 struct cfg80211_chan_def monitor_chandef; 1386 1387 /* extended capabilities provided by mac80211 */ 1388 u8 ext_capa[8]; 1389 1390 /* TDLS channel switch */ 1391 struct work_struct tdls_chsw_work; 1392 struct sk_buff_head skb_queue_tdls_chsw; 1393 }; 1394 1395 static inline struct ieee80211_sub_if_data * 1396 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1397 { 1398 return netdev_priv(dev); 1399 } 1400 1401 static inline struct ieee80211_sub_if_data * 1402 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1403 { 1404 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1405 } 1406 1407 static inline struct ieee80211_supported_band * 1408 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1409 { 1410 struct ieee80211_local *local = sdata->local; 1411 struct ieee80211_chanctx_conf *chanctx_conf; 1412 enum nl80211_band band; 1413 1414 rcu_read_lock(); 1415 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1416 1417 if (WARN_ON(!chanctx_conf)) { 1418 rcu_read_unlock(); 1419 return NULL; 1420 } 1421 1422 band = chanctx_conf->def.chan->band; 1423 rcu_read_unlock(); 1424 1425 return local->hw.wiphy->bands[band]; 1426 } 1427 1428 /* this struct holds the value parsing from channel switch IE */ 1429 struct ieee80211_csa_ie { 1430 struct cfg80211_chan_def chandef; 1431 u8 mode; 1432 u8 count; 1433 u8 ttl; 1434 u16 pre_value; 1435 }; 1436 1437 /* Parsed Information Elements */ 1438 struct ieee802_11_elems { 1439 const u8 *ie_start; 1440 size_t total_len; 1441 1442 /* pointers to IEs */ 1443 const struct ieee80211_tdls_lnkie *lnk_id; 1444 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1445 const u8 *ext_capab; 1446 const u8 *ssid; 1447 const u8 *supp_rates; 1448 const u8 *ds_params; 1449 const struct ieee80211_tim_ie *tim; 1450 const u8 *challenge; 1451 const u8 *rsn; 1452 const u8 *erp_info; 1453 const u8 *ext_supp_rates; 1454 const u8 *wmm_info; 1455 const u8 *wmm_param; 1456 const struct ieee80211_ht_cap *ht_cap_elem; 1457 const struct ieee80211_ht_operation *ht_operation; 1458 const struct ieee80211_vht_cap *vht_cap_elem; 1459 const struct ieee80211_vht_operation *vht_operation; 1460 const struct ieee80211_meshconf_ie *mesh_config; 1461 const u8 *mesh_id; 1462 const u8 *peering; 1463 const __le16 *awake_window; 1464 const u8 *preq; 1465 const u8 *prep; 1466 const u8 *perr; 1467 const struct ieee80211_rann_ie *rann; 1468 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1469 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1470 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1471 const u8 *country_elem; 1472 const u8 *pwr_constr_elem; 1473 const u8 *cisco_dtpc_elem; 1474 const struct ieee80211_timeout_interval_ie *timeout_int; 1475 const u8 *opmode_notif; 1476 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1477 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1478 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1479 1480 /* length of them, respectively */ 1481 u8 ext_capab_len; 1482 u8 ssid_len; 1483 u8 supp_rates_len; 1484 u8 tim_len; 1485 u8 challenge_len; 1486 u8 rsn_len; 1487 u8 ext_supp_rates_len; 1488 u8 wmm_info_len; 1489 u8 wmm_param_len; 1490 u8 mesh_id_len; 1491 u8 peering_len; 1492 u8 preq_len; 1493 u8 prep_len; 1494 u8 perr_len; 1495 u8 country_elem_len; 1496 1497 /* whether a parse error occurred while retrieving these elements */ 1498 bool parse_error; 1499 }; 1500 1501 static inline struct ieee80211_local *hw_to_local( 1502 struct ieee80211_hw *hw) 1503 { 1504 return container_of(hw, struct ieee80211_local, hw); 1505 } 1506 1507 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1508 { 1509 return container_of(txq, struct txq_info, txq); 1510 } 1511 1512 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1513 { 1514 struct txq_info *txqi = to_txq_info(txq); 1515 1516 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1517 } 1518 1519 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1520 { 1521 return ether_addr_equal(raddr, addr) || 1522 is_broadcast_ether_addr(raddr); 1523 } 1524 1525 static inline bool 1526 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1527 { 1528 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1529 status->flag & RX_FLAG_MACTIME_END); 1530 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1531 return true; 1532 /* can't handle non-legacy preamble yet */ 1533 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1534 status->encoding == RX_ENC_LEGACY) 1535 return true; 1536 return false; 1537 } 1538 1539 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1541 1542 /* This function returns the number of multicast stations connected to this 1543 * interface. It returns -1 if that number is not tracked, that is for netdevs 1544 * not in AP or AP_VLAN mode or when using 4addr. 1545 */ 1546 static inline int 1547 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1548 { 1549 if (sdata->vif.type == NL80211_IFTYPE_AP) 1550 return atomic_read(&sdata->u.ap.num_mcast_sta); 1551 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1552 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1553 return -1; 1554 } 1555 1556 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1557 struct ieee80211_rx_status *status, 1558 unsigned int mpdu_len, 1559 unsigned int mpdu_offset); 1560 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1561 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1562 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1563 u32 changed); 1564 void ieee80211_configure_filter(struct ieee80211_local *local); 1565 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1566 1567 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1568 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1569 u64 *cookie, gfp_t gfp); 1570 1571 void ieee80211_check_fast_rx(struct sta_info *sta); 1572 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1573 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1574 void ieee80211_clear_fast_rx(struct sta_info *sta); 1575 1576 /* STA code */ 1577 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1578 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1579 struct cfg80211_auth_request *req); 1580 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1581 struct cfg80211_assoc_request *req); 1582 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1583 struct cfg80211_deauth_request *req); 1584 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1585 struct cfg80211_disassoc_request *req); 1586 void ieee80211_send_pspoll(struct ieee80211_local *local, 1587 struct ieee80211_sub_if_data *sdata); 1588 void ieee80211_recalc_ps(struct ieee80211_local *local); 1589 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1590 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1591 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1592 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1593 struct sk_buff *skb); 1594 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1596 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1597 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1598 __le16 fc, bool acked); 1599 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1600 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1601 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1602 1603 /* IBSS code */ 1604 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1605 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1606 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1607 const u8 *bssid, const u8 *addr, u32 supp_rates); 1608 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1609 struct cfg80211_ibss_params *params); 1610 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1611 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1612 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1613 struct sk_buff *skb); 1614 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1615 struct cfg80211_csa_settings *csa_settings); 1616 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1617 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1618 1619 /* OCB code */ 1620 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1621 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1622 const u8 *bssid, const u8 *addr, u32 supp_rates); 1623 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1624 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1625 struct ocb_setup *setup); 1626 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1627 1628 /* mesh code */ 1629 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1630 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1631 struct sk_buff *skb); 1632 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1633 struct cfg80211_csa_settings *csa_settings); 1634 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1635 1636 /* scan/BSS handling */ 1637 void ieee80211_scan_work(struct work_struct *work); 1638 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1639 const u8 *ssid, u8 ssid_len, 1640 struct ieee80211_channel **channels, 1641 unsigned int n_channels, 1642 enum nl80211_bss_scan_width scan_width); 1643 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1644 struct cfg80211_scan_request *req); 1645 void ieee80211_scan_cancel(struct ieee80211_local *local); 1646 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1647 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1648 1649 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1650 struct ieee80211_bss * 1651 ieee80211_bss_info_update(struct ieee80211_local *local, 1652 struct ieee80211_rx_status *rx_status, 1653 struct ieee80211_mgmt *mgmt, 1654 size_t len, 1655 struct ieee802_11_elems *elems, 1656 struct ieee80211_channel *channel); 1657 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1658 struct ieee80211_bss *bss); 1659 1660 /* scheduled scan handling */ 1661 int 1662 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1663 struct cfg80211_sched_scan_request *req); 1664 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1665 struct cfg80211_sched_scan_request *req); 1666 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1667 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1668 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1669 1670 /* off-channel/mgmt-tx */ 1671 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1672 void ieee80211_offchannel_return(struct ieee80211_local *local); 1673 void ieee80211_roc_setup(struct ieee80211_local *local); 1674 void ieee80211_start_next_roc(struct ieee80211_local *local); 1675 void ieee80211_roc_purge(struct ieee80211_local *local, 1676 struct ieee80211_sub_if_data *sdata); 1677 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1678 struct ieee80211_channel *chan, 1679 unsigned int duration, u64 *cookie); 1680 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1681 struct wireless_dev *wdev, u64 cookie); 1682 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1683 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1684 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1685 struct wireless_dev *wdev, u64 cookie); 1686 1687 /* channel switch handling */ 1688 void ieee80211_csa_finalize_work(struct work_struct *work); 1689 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1690 struct cfg80211_csa_settings *params); 1691 1692 /* interface handling */ 1693 int ieee80211_iface_init(void); 1694 void ieee80211_iface_exit(void); 1695 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1696 unsigned char name_assign_type, 1697 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1698 struct vif_params *params); 1699 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1700 enum nl80211_iftype type); 1701 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1702 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1703 u32 ieee80211_idle_off(struct ieee80211_local *local); 1704 void ieee80211_recalc_idle(struct ieee80211_local *local); 1705 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1706 const int offset); 1707 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1708 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1709 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1710 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1711 1712 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1713 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1714 bool update_bss); 1715 1716 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1717 { 1718 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1719 } 1720 1721 /* tx handling */ 1722 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1723 void ieee80211_tx_pending(unsigned long data); 1724 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1725 struct net_device *dev); 1726 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1727 struct net_device *dev); 1728 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1729 struct net_device *dev, 1730 u32 info_flags); 1731 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1732 struct sk_buff_head *skbs); 1733 struct sk_buff * 1734 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1735 struct sk_buff *skb, u32 info_flags); 1736 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1737 struct ieee80211_supported_band *sband, 1738 int retry_count, int shift, bool send_to_cooked); 1739 1740 void ieee80211_check_fast_xmit(struct sta_info *sta); 1741 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1742 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1743 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1744 1745 /* HT */ 1746 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1747 struct ieee80211_sta_ht_cap *ht_cap); 1748 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1749 struct ieee80211_supported_band *sband, 1750 const struct ieee80211_ht_cap *ht_cap_ie, 1751 struct sta_info *sta); 1752 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1753 const u8 *da, u16 tid, 1754 u16 initiator, u16 reason_code); 1755 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1756 enum ieee80211_smps_mode smps, const u8 *da, 1757 const u8 *bssid); 1758 void ieee80211_request_smps_ap_work(struct work_struct *work); 1759 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1760 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1761 enum ieee80211_smps_mode smps_mode_new); 1762 1763 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1764 u16 initiator, u16 reason, bool stop); 1765 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1766 u16 initiator, u16 reason, bool stop); 1767 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1768 u8 dialog_token, u16 timeout, 1769 u16 start_seq_num, u16 ba_policy, u16 tid, 1770 u16 buf_size, bool tx, bool auto_seq); 1771 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1772 enum ieee80211_agg_stop_reason reason); 1773 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1774 struct sta_info *sta, 1775 struct ieee80211_mgmt *mgmt, size_t len); 1776 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1777 struct sta_info *sta, 1778 struct ieee80211_mgmt *mgmt, 1779 size_t len); 1780 void ieee80211_process_addba_request(struct ieee80211_local *local, 1781 struct sta_info *sta, 1782 struct ieee80211_mgmt *mgmt, 1783 size_t len); 1784 1785 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1786 enum ieee80211_agg_stop_reason reason); 1787 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1788 enum ieee80211_agg_stop_reason reason); 1789 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1790 struct tid_ampdu_tx *tid_tx); 1791 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1792 struct tid_ampdu_tx *tid_tx); 1793 void ieee80211_ba_session_work(struct work_struct *work); 1794 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1795 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1796 1797 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1798 1799 /* VHT */ 1800 void 1801 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1802 struct ieee80211_supported_band *sband, 1803 const struct ieee80211_vht_cap *vht_cap_ie, 1804 struct sta_info *sta); 1805 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1806 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1807 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1808 enum ieee80211_sta_rx_bandwidth 1809 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1810 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1811 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1812 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1813 struct ieee80211_mgmt *mgmt); 1814 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1815 struct sta_info *sta, u8 opmode, 1816 enum nl80211_band band); 1817 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1818 struct sta_info *sta, u8 opmode, 1819 enum nl80211_band band); 1820 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1821 struct ieee80211_sta_vht_cap *vht_cap); 1822 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1823 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1824 1825 /* Spectrum management */ 1826 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1827 struct ieee80211_mgmt *mgmt, 1828 size_t len); 1829 /** 1830 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1831 * @sdata: the sdata of the interface which has received the frame 1832 * @elems: parsed 802.11 elements received with the frame 1833 * @current_band: indicates the current band 1834 * @sta_flags: contains information about own capabilities and restrictions 1835 * to decide which channel switch announcements can be accepted. Only the 1836 * following subset of &enum ieee80211_sta_flags are evaluated: 1837 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1838 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1839 * %IEEE80211_STA_DISABLE_160MHZ. 1840 * @bssid: the currently connected bssid (for reporting) 1841 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1842 All of them will be filled with if success only. 1843 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1844 */ 1845 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1846 struct ieee802_11_elems *elems, 1847 enum nl80211_band current_band, 1848 u32 sta_flags, u8 *bssid, 1849 struct ieee80211_csa_ie *csa_ie); 1850 1851 /* Suspend/resume and hw reconfiguration */ 1852 int ieee80211_reconfig(struct ieee80211_local *local); 1853 void ieee80211_stop_device(struct ieee80211_local *local); 1854 1855 int __ieee80211_suspend(struct ieee80211_hw *hw, 1856 struct cfg80211_wowlan *wowlan); 1857 1858 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1859 { 1860 struct ieee80211_local *local = hw_to_local(hw); 1861 1862 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1863 !test_bit(SCAN_COMPLETED, &local->scanning), 1864 "%s: resume with hardware scan still in progress\n", 1865 wiphy_name(hw->wiphy)); 1866 1867 return ieee80211_reconfig(hw_to_local(hw)); 1868 } 1869 1870 /* utility functions/constants */ 1871 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1872 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1873 int rate, int erp, int short_preamble, 1874 int shift); 1875 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1876 bool bss_notify, bool enable_qos); 1877 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1878 struct sta_info *sta, struct sk_buff *skb); 1879 1880 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1881 struct sk_buff *skb, int tid, 1882 enum nl80211_band band); 1883 1884 static inline void 1885 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1886 struct sk_buff *skb, int tid, 1887 enum nl80211_band band) 1888 { 1889 rcu_read_lock(); 1890 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1891 rcu_read_unlock(); 1892 } 1893 1894 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1895 struct sk_buff *skb, int tid) 1896 { 1897 struct ieee80211_chanctx_conf *chanctx_conf; 1898 1899 rcu_read_lock(); 1900 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1901 if (WARN_ON(!chanctx_conf)) { 1902 rcu_read_unlock(); 1903 kfree_skb(skb); 1904 return; 1905 } 1906 1907 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1908 chanctx_conf->def.chan->band); 1909 rcu_read_unlock(); 1910 } 1911 1912 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1913 struct sk_buff *skb) 1914 { 1915 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1916 ieee80211_tx_skb_tid(sdata, skb, 7); 1917 } 1918 1919 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1920 struct ieee802_11_elems *elems, 1921 u64 filter, u32 crc); 1922 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1923 bool action, 1924 struct ieee802_11_elems *elems) 1925 { 1926 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1927 } 1928 1929 1930 extern const int ieee802_1d_to_ac[8]; 1931 1932 static inline int ieee80211_ac_from_tid(int tid) 1933 { 1934 return ieee802_1d_to_ac[tid & 7]; 1935 } 1936 1937 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1938 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1939 void ieee80211_dynamic_ps_timer(unsigned long data); 1940 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1941 struct ieee80211_sub_if_data *sdata, 1942 bool powersave); 1943 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1944 struct ieee80211_hdr *hdr); 1945 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1946 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1947 1948 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1949 unsigned long queues, 1950 enum queue_stop_reason reason, 1951 bool refcounted); 1952 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1953 struct ieee80211_sub_if_data *sdata, 1954 enum queue_stop_reason reason); 1955 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1956 struct ieee80211_sub_if_data *sdata, 1957 enum queue_stop_reason reason); 1958 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1959 unsigned long queues, 1960 enum queue_stop_reason reason, 1961 bool refcounted); 1962 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1963 enum queue_stop_reason reason, 1964 bool refcounted); 1965 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1966 enum queue_stop_reason reason, 1967 bool refcounted); 1968 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1969 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1970 struct sk_buff *skb); 1971 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1972 struct sk_buff_head *skbs); 1973 void ieee80211_flush_queues(struct ieee80211_local *local, 1974 struct ieee80211_sub_if_data *sdata, bool drop); 1975 void __ieee80211_flush_queues(struct ieee80211_local *local, 1976 struct ieee80211_sub_if_data *sdata, 1977 unsigned int queues, bool drop); 1978 1979 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1980 { 1981 /* 1982 * If quiescing is set, we are racing with __ieee80211_suspend. 1983 * __ieee80211_suspend flushes the workers after setting quiescing, 1984 * and we check quiescing / suspended before enqueing new workers. 1985 * We should abort the worker to avoid the races below. 1986 */ 1987 if (local->quiescing) 1988 return false; 1989 1990 /* 1991 * We might already be suspended if the following scenario occurs: 1992 * __ieee80211_suspend Control path 1993 * 1994 * if (local->quiescing) 1995 * return; 1996 * local->quiescing = true; 1997 * flush_workqueue(); 1998 * queue_work(...); 1999 * local->suspended = true; 2000 * local->quiescing = false; 2001 * worker starts running... 2002 */ 2003 if (local->suspended) 2004 return false; 2005 2006 return true; 2007 } 2008 2009 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2010 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2011 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2012 struct sta_info *sta, 2013 struct txq_info *txq, int tid); 2014 void ieee80211_txq_purge(struct ieee80211_local *local, 2015 struct txq_info *txqi); 2016 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2017 u16 transaction, u16 auth_alg, u16 status, 2018 const u8 *extra, size_t extra_len, const u8 *bssid, 2019 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2020 u32 tx_flags); 2021 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2022 const u8 *bssid, u16 stype, u16 reason, 2023 bool send_frame, u8 *frame_buf); 2024 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2025 size_t buffer_len, 2026 struct ieee80211_scan_ies *ie_desc, 2027 const u8 *ie, size_t ie_len, 2028 u8 bands_used, u32 *rate_masks, 2029 struct cfg80211_chan_def *chandef); 2030 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2031 const u8 *src, const u8 *dst, 2032 u32 ratemask, 2033 struct ieee80211_channel *chan, 2034 const u8 *ssid, size_t ssid_len, 2035 const u8 *ie, size_t ie_len, 2036 bool directed); 2037 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 2038 const u8 *src, const u8 *dst, 2039 const u8 *ssid, size_t ssid_len, 2040 const u8 *ie, size_t ie_len, 2041 u32 ratemask, bool directed, u32 tx_flags, 2042 struct ieee80211_channel *channel, bool scan); 2043 2044 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2045 struct ieee802_11_elems *elems, 2046 enum nl80211_band band, u32 *basic_rates); 2047 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2048 enum ieee80211_smps_mode smps_mode); 2049 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2050 enum ieee80211_smps_mode smps_mode); 2051 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2052 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2053 2054 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2055 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2056 u16 cap); 2057 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2058 const struct cfg80211_chan_def *chandef, 2059 u16 prot_mode, bool rifs_mode); 2060 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2061 u32 cap); 2062 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2063 const struct cfg80211_chan_def *chandef); 2064 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2065 const struct ieee80211_supported_band *sband, 2066 const u8 *srates, int srates_len, u32 *rates); 2067 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2068 struct sk_buff *skb, bool need_basic, 2069 enum nl80211_band band); 2070 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2071 struct sk_buff *skb, bool need_basic, 2072 enum nl80211_band band); 2073 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2074 2075 /* channel management */ 2076 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2077 struct cfg80211_chan_def *chandef); 2078 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 2079 struct cfg80211_chan_def *chandef); 2080 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2081 2082 int __must_check 2083 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2084 const struct cfg80211_chan_def *chandef, 2085 enum ieee80211_chanctx_mode mode); 2086 int __must_check 2087 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2088 const struct cfg80211_chan_def *chandef, 2089 enum ieee80211_chanctx_mode mode, 2090 bool radar_required); 2091 int __must_check 2092 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2093 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2094 2095 int __must_check 2096 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2097 const struct cfg80211_chan_def *chandef, 2098 u32 *changed); 2099 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2100 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2101 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2102 bool clear); 2103 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2104 struct ieee80211_chanctx *ctx); 2105 2106 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2107 struct ieee80211_chanctx *chanctx); 2108 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2109 struct ieee80211_chanctx *ctx); 2110 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2111 2112 void ieee80211_dfs_cac_timer(unsigned long data); 2113 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2114 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2115 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2116 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2117 struct cfg80211_csa_settings *csa_settings); 2118 2119 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2120 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2121 const struct ieee80211_cipher_scheme * 2122 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2123 enum nl80211_iftype iftype); 2124 int ieee80211_cs_headroom(struct ieee80211_local *local, 2125 struct cfg80211_crypto_settings *crypto, 2126 enum nl80211_iftype iftype); 2127 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2128 struct ieee80211_sub_if_data *sdata); 2129 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2130 const struct cfg80211_chan_def *chandef, 2131 enum ieee80211_chanctx_mode chanmode, 2132 u8 radar_detect); 2133 int ieee80211_max_num_channels(struct ieee80211_local *local); 2134 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2135 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2136 struct ieee80211_chanctx *ctx); 2137 2138 /* TDLS */ 2139 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2140 const u8 *peer, u8 action_code, u8 dialog_token, 2141 u16 status_code, u32 peer_capability, 2142 bool initiator, const u8 *extra_ies, 2143 size_t extra_ies_len); 2144 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2145 const u8 *peer, enum nl80211_tdls_operation oper); 2146 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2147 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2148 const u8 *addr, u8 oper_class, 2149 struct cfg80211_chan_def *chandef); 2150 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2151 struct net_device *dev, 2152 const u8 *addr); 2153 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2154 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2155 2156 extern const struct ethtool_ops ieee80211_ethtool_ops; 2157 2158 #ifdef CONFIG_MAC80211_NOINLINE 2159 #define debug_noinline noinline 2160 #else 2161 #define debug_noinline 2162 #endif 2163 2164 #endif /* IEEE80211_I_H */ 2165