1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2015 Intel Mobile Communications GmbH 8 * Copyright (C) 2018-2019 Intel Corporation 9 */ 10 11 #ifndef IEEE80211_I_H 12 #define IEEE80211_I_H 13 14 #include <linux/kernel.h> 15 #include <linux/device.h> 16 #include <linux/if_ether.h> 17 #include <linux/interrupt.h> 18 #include <linux/list.h> 19 #include <linux/netdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/workqueue.h> 22 #include <linux/types.h> 23 #include <linux/spinlock.h> 24 #include <linux/etherdevice.h> 25 #include <linux/leds.h> 26 #include <linux/idr.h> 27 #include <linux/rhashtable.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include <net/fq.h> 32 #include "key.h" 33 #include "sta_info.h" 34 #include "debug.h" 35 36 extern const struct cfg80211_ops mac80211_config_ops; 37 38 struct ieee80211_local; 39 40 /* Maximum number of broadcast/multicast frames to buffer when some of the 41 * associated stations are using power saving. */ 42 #define AP_MAX_BC_BUFFER 128 43 44 /* Maximum number of frames buffered to all STAs, including multicast frames. 45 * Note: increasing this limit increases the potential memory requirement. Each 46 * frame can be up to about 2 kB long. */ 47 #define TOTAL_MAX_TX_BUFFER 512 48 49 /* Required encryption head and tailroom */ 50 #define IEEE80211_ENCRYPT_HEADROOM 8 51 #define IEEE80211_ENCRYPT_TAILROOM 18 52 53 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 54 * reception of at least three fragmented frames. This limit can be increased 55 * by changing this define, at the cost of slower frame reassembly and 56 * increased memory use (about 2 kB of RAM per entry). */ 57 #define IEEE80211_FRAGMENT_MAX 4 58 59 /* power level hasn't been configured (or set to automatic) */ 60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 61 62 /* 63 * Some APs experience problems when working with U-APSD. Decreasing the 64 * probability of that happening by using legacy mode for all ACs but VO isn't 65 * enough. 66 * 67 * Cisco 4410N originally forced us to enable VO by default only because it 68 * treated non-VO ACs as legacy. 69 * 70 * However some APs (notably Netgear R7000) silently reclassify packets to 71 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 72 * clients would never see some frames (e.g. ARP responses) or would fetch them 73 * accidentally after a long time. 74 * 75 * It makes little sense to enable u-APSD queues by default because it needs 76 * userspace applications to be aware of it to actually take advantage of the 77 * possible additional powersavings. Implicitly depending on driver autotrigger 78 * frame support doesn't make much sense. 79 */ 80 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 81 82 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 83 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 84 85 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 86 87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 88 89 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 90 91 struct ieee80211_fragment_entry { 92 struct sk_buff_head skb_list; 93 unsigned long first_frag_time; 94 u16 seq; 95 u16 extra_len; 96 u16 last_frag; 97 u8 rx_queue; 98 bool check_sequential_pn; /* needed for CCMP/GCMP */ 99 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 100 }; 101 102 103 struct ieee80211_bss { 104 u32 device_ts_beacon, device_ts_presp; 105 106 bool wmm_used; 107 bool uapsd_supported; 108 109 #define IEEE80211_MAX_SUPP_RATES 32 110 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 111 size_t supp_rates_len; 112 struct ieee80211_rate *beacon_rate; 113 114 /* 115 * During association, we save an ERP value from a probe response so 116 * that we can feed ERP info to the driver when handling the 117 * association completes. these fields probably won't be up-to-date 118 * otherwise, you probably don't want to use them. 119 */ 120 bool has_erp_value; 121 u8 erp_value; 122 123 /* Keep track of the corruption of the last beacon/probe response. */ 124 u8 corrupt_data; 125 126 /* Keep track of what bits of information we have valid info for. */ 127 u8 valid_data; 128 }; 129 130 /** 131 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 132 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 133 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 134 * 135 * These are bss flags that are attached to a bss in the 136 * @corrupt_data field of &struct ieee80211_bss. 137 */ 138 enum ieee80211_bss_corrupt_data_flags { 139 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 140 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 141 }; 142 143 /** 144 * enum ieee80211_valid_data_flags - BSS valid data flags 145 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 146 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 147 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 148 * 149 * These are bss flags that are attached to a bss in the 150 * @valid_data field of &struct ieee80211_bss. They show which parts 151 * of the data structure were received as a result of an un-corrupted 152 * beacon/probe response. 153 */ 154 enum ieee80211_bss_valid_data_flags { 155 IEEE80211_BSS_VALID_WMM = BIT(1), 156 IEEE80211_BSS_VALID_RATES = BIT(2), 157 IEEE80211_BSS_VALID_ERP = BIT(3) 158 }; 159 160 typedef unsigned __bitwise ieee80211_tx_result; 161 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 162 #define TX_DROP ((__force ieee80211_tx_result) 1u) 163 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 164 165 #define IEEE80211_TX_NO_SEQNO BIT(0) 166 #define IEEE80211_TX_UNICAST BIT(1) 167 #define IEEE80211_TX_PS_BUFFERED BIT(2) 168 169 struct ieee80211_tx_data { 170 struct sk_buff *skb; 171 struct sk_buff_head skbs; 172 struct ieee80211_local *local; 173 struct ieee80211_sub_if_data *sdata; 174 struct sta_info *sta; 175 struct ieee80211_key *key; 176 struct ieee80211_tx_rate rate; 177 178 unsigned int flags; 179 }; 180 181 182 typedef unsigned __bitwise ieee80211_rx_result; 183 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 184 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 185 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 186 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 187 188 /** 189 * enum ieee80211_packet_rx_flags - packet RX flags 190 * @IEEE80211_RX_AMSDU: a-MSDU packet 191 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 192 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 193 * 194 * These are per-frame flags that are attached to a frame in the 195 * @rx_flags field of &struct ieee80211_rx_status. 196 */ 197 enum ieee80211_packet_rx_flags { 198 IEEE80211_RX_AMSDU = BIT(3), 199 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 200 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 201 }; 202 203 /** 204 * enum ieee80211_rx_flags - RX data flags 205 * 206 * @IEEE80211_RX_CMNTR: received on cooked monitor already 207 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 208 * to cfg80211_report_obss_beacon(). 209 * 210 * These flags are used across handling multiple interfaces 211 * for a single frame. 212 */ 213 enum ieee80211_rx_flags { 214 IEEE80211_RX_CMNTR = BIT(0), 215 IEEE80211_RX_BEACON_REPORTED = BIT(1), 216 }; 217 218 struct ieee80211_rx_data { 219 struct napi_struct *napi; 220 struct sk_buff *skb; 221 struct ieee80211_local *local; 222 struct ieee80211_sub_if_data *sdata; 223 struct sta_info *sta; 224 struct ieee80211_key *key; 225 226 unsigned int flags; 227 228 /* 229 * Index into sequence numbers array, 0..16 230 * since the last (16) is used for non-QoS, 231 * will be 16 on non-QoS frames. 232 */ 233 int seqno_idx; 234 235 /* 236 * Index into the security IV/PN arrays, 0..16 237 * since the last (16) is used for CCMP-encrypted 238 * management frames, will be set to 16 on mgmt 239 * frames and 0 on non-QoS frames. 240 */ 241 int security_idx; 242 243 u32 tkip_iv32; 244 u16 tkip_iv16; 245 }; 246 247 struct ieee80211_csa_settings { 248 const u16 *counter_offsets_beacon; 249 const u16 *counter_offsets_presp; 250 251 int n_counter_offsets_beacon; 252 int n_counter_offsets_presp; 253 254 u8 count; 255 }; 256 257 struct beacon_data { 258 u8 *head, *tail; 259 int head_len, tail_len; 260 struct ieee80211_meshconf_ie *meshconf; 261 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 262 u8 csa_current_counter; 263 struct rcu_head rcu_head; 264 }; 265 266 struct probe_resp { 267 struct rcu_head rcu_head; 268 int len; 269 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 270 u8 data[0]; 271 }; 272 273 struct ps_data { 274 /* yes, this looks ugly, but guarantees that we can later use 275 * bitmap_empty :) 276 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 277 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 278 __aligned(__alignof__(unsigned long)); 279 struct sk_buff_head bc_buf; 280 atomic_t num_sta_ps; /* number of stations in PS mode */ 281 int dtim_count; 282 bool dtim_bc_mc; 283 }; 284 285 struct ieee80211_if_ap { 286 struct beacon_data __rcu *beacon; 287 struct probe_resp __rcu *probe_resp; 288 289 /* to be used after channel switch. */ 290 struct cfg80211_beacon_data *next_beacon; 291 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 292 293 struct ps_data ps; 294 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 295 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 296 driver_smps_mode; /* smps mode request */ 297 298 struct work_struct request_smps_work; 299 bool multicast_to_unicast; 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 IEEE80211_STA_DISABLE_HE = BIT(16), 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 peer_confirmed; 378 bool timeout_started; 379 380 u16 sae_trans, sae_status; 381 size_t data_len; 382 u8 data[]; 383 }; 384 385 struct ieee80211_mgd_assoc_data { 386 struct cfg80211_bss *bss; 387 const u8 *supp_rates; 388 389 unsigned long timeout; 390 int tries; 391 392 u16 capability; 393 u8 prev_bssid[ETH_ALEN]; 394 u8 ssid[IEEE80211_MAX_SSID_LEN]; 395 u8 ssid_len; 396 u8 supp_rates_len; 397 bool wmm, uapsd; 398 bool need_beacon; 399 bool synced; 400 bool timeout_started; 401 402 u8 ap_ht_param; 403 404 struct ieee80211_vht_cap ap_vht_cap; 405 406 u8 fils_nonces[2 * FILS_NONCE_LEN]; 407 u8 fils_kek[FILS_MAX_KEK_LEN]; 408 size_t fils_kek_len; 409 410 size_t ie_len; 411 u8 ie[]; 412 }; 413 414 struct ieee80211_sta_tx_tspec { 415 /* timestamp of the first packet in the time slice */ 416 unsigned long time_slice_start; 417 418 u32 admitted_time; /* in usecs, unlike over the air */ 419 u8 tsid; 420 s8 up; /* signed to be able to invalidate with -1 during teardown */ 421 422 /* consumed TX time in microseconds in the time slice */ 423 u32 consumed_tx_time; 424 enum { 425 TX_TSPEC_ACTION_NONE = 0, 426 TX_TSPEC_ACTION_DOWNGRADE, 427 TX_TSPEC_ACTION_STOP_DOWNGRADE, 428 } action; 429 bool downgraded; 430 }; 431 432 DECLARE_EWMA(beacon_signal, 4, 4) 433 434 struct ieee80211_if_managed { 435 struct timer_list timer; 436 struct timer_list conn_mon_timer; 437 struct timer_list bcn_mon_timer; 438 struct timer_list chswitch_timer; 439 struct work_struct monitor_work; 440 struct work_struct chswitch_work; 441 struct work_struct beacon_connection_loss_work; 442 struct work_struct csa_connection_drop_work; 443 444 unsigned long beacon_timeout; 445 unsigned long probe_timeout; 446 int probe_send_count; 447 bool nullfunc_failed; 448 bool connection_loss; 449 450 struct cfg80211_bss *associated; 451 struct ieee80211_mgd_auth_data *auth_data; 452 struct ieee80211_mgd_assoc_data *assoc_data; 453 454 u8 bssid[ETH_ALEN] __aligned(2); 455 456 u16 aid; 457 458 bool powersave; /* powersave requested for this iface */ 459 bool broken_ap; /* AP is broken -- turn off powersave */ 460 bool have_beacon; 461 u8 dtim_period; 462 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 463 driver_smps_mode; /* smps mode request */ 464 465 struct work_struct request_smps_work; 466 467 unsigned int flags; 468 469 bool csa_waiting_bcn; 470 bool csa_ignored_same_chan; 471 472 bool beacon_crc_valid; 473 u32 beacon_crc; 474 475 bool status_acked; 476 bool status_received; 477 __le16 status_fc; 478 479 enum { 480 IEEE80211_MFP_DISABLED, 481 IEEE80211_MFP_OPTIONAL, 482 IEEE80211_MFP_REQUIRED 483 } mfp; /* management frame protection */ 484 485 /* 486 * Bitmask of enabled u-apsd queues, 487 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 488 * to take effect. 489 */ 490 unsigned int uapsd_queues; 491 492 /* 493 * Maximum number of buffered frames AP can deliver during a 494 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 495 * Needs a new association to take effect. 496 */ 497 unsigned int uapsd_max_sp_len; 498 499 int wmm_last_param_set; 500 int mu_edca_last_param_set; 501 502 u8 use_4addr; 503 504 s16 p2p_noa_index; 505 506 struct ewma_beacon_signal ave_beacon_signal; 507 508 /* 509 * Number of Beacon frames used in ave_beacon_signal. This can be used 510 * to avoid generating less reliable cqm events that would be based 511 * only on couple of received frames. 512 */ 513 unsigned int count_beacon_signal; 514 515 /* Number of times beacon loss was invoked. */ 516 unsigned int beacon_loss_count; 517 518 /* 519 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 520 * that triggered a cqm event. 0 indicates that no event has been 521 * generated for the current association. 522 */ 523 int last_cqm_event_signal; 524 525 /* 526 * State variables for keeping track of RSSI of the AP currently 527 * connected to and informing driver when RSSI has gone 528 * below/above a certain threshold. 529 */ 530 int rssi_min_thold, rssi_max_thold; 531 int last_ave_beacon_signal; 532 533 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 534 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 535 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 536 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 537 538 /* TDLS support */ 539 u8 tdls_peer[ETH_ALEN] __aligned(2); 540 struct delayed_work tdls_peer_del_work; 541 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 542 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 543 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 544 bool tdls_chan_switch_prohibited; 545 bool tdls_wider_bw_prohibited; 546 547 /* WMM-AC TSPEC support */ 548 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 549 /* Use a separate work struct so that we can do something here 550 * while the sdata->work is flushing the queues, for example. 551 * otherwise, in scenarios where we hardly get any traffic out 552 * on the BE queue, but there's a lot of VO traffic, we might 553 * get stuck in a downgraded situation and flush takes forever. 554 */ 555 struct delayed_work tx_tspec_wk; 556 557 /* Information elements from the last transmitted (Re)Association 558 * Request frame. 559 */ 560 u8 *assoc_req_ies; 561 size_t assoc_req_ies_len; 562 }; 563 564 struct ieee80211_if_ibss { 565 struct timer_list timer; 566 struct work_struct csa_connection_drop_work; 567 568 unsigned long last_scan_completed; 569 570 u32 basic_rates; 571 572 bool fixed_bssid; 573 bool fixed_channel; 574 bool privacy; 575 576 bool control_port; 577 bool userspace_handles_dfs; 578 579 u8 bssid[ETH_ALEN] __aligned(2); 580 u8 ssid[IEEE80211_MAX_SSID_LEN]; 581 u8 ssid_len, ie_len; 582 u8 *ie; 583 struct cfg80211_chan_def chandef; 584 585 unsigned long ibss_join_req; 586 /* probe response/beacon for IBSS */ 587 struct beacon_data __rcu *presp; 588 589 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 590 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 591 592 spinlock_t incomplete_lock; 593 struct list_head incomplete_stations; 594 595 enum { 596 IEEE80211_IBSS_MLME_SEARCH, 597 IEEE80211_IBSS_MLME_JOINED, 598 } state; 599 }; 600 601 /** 602 * struct ieee80211_if_ocb - OCB mode state 603 * 604 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 605 * @wrkq_flags: OCB deferred task action 606 * @incomplete_lock: delayed STA insertion lock 607 * @incomplete_stations: list of STAs waiting for delayed insertion 608 * @joined: indication if the interface is connected to an OCB network 609 */ 610 struct ieee80211_if_ocb { 611 struct timer_list housekeeping_timer; 612 unsigned long wrkq_flags; 613 614 spinlock_t incomplete_lock; 615 struct list_head incomplete_stations; 616 617 bool joined; 618 }; 619 620 /** 621 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 622 * 623 * these declarations define the interface, which enables 624 * vendor-specific mesh synchronization 625 * 626 */ 627 struct ieee802_11_elems; 628 struct ieee80211_mesh_sync_ops { 629 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 630 u16 stype, 631 struct ieee80211_mgmt *mgmt, 632 struct ieee802_11_elems *elems, 633 struct ieee80211_rx_status *rx_status); 634 635 /* should be called with beacon_data under RCU read lock */ 636 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 637 struct beacon_data *beacon); 638 /* add other framework functions here */ 639 }; 640 641 struct mesh_csa_settings { 642 struct rcu_head rcu_head; 643 struct cfg80211_csa_settings settings; 644 }; 645 646 struct ieee80211_if_mesh { 647 struct timer_list housekeeping_timer; 648 struct timer_list mesh_path_timer; 649 struct timer_list mesh_path_root_timer; 650 651 unsigned long wrkq_flags; 652 unsigned long mbss_changed; 653 654 bool userspace_handles_dfs; 655 656 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 657 size_t mesh_id_len; 658 /* Active Path Selection Protocol Identifier */ 659 u8 mesh_pp_id; 660 /* Active Path Selection Metric Identifier */ 661 u8 mesh_pm_id; 662 /* Congestion Control Mode Identifier */ 663 u8 mesh_cc_id; 664 /* Synchronization Protocol Identifier */ 665 u8 mesh_sp_id; 666 /* Authentication Protocol Identifier */ 667 u8 mesh_auth_id; 668 /* Local mesh Sequence Number */ 669 u32 sn; 670 /* Last used PREQ ID */ 671 u32 preq_id; 672 atomic_t mpaths; 673 /* Timestamp of last SN update */ 674 unsigned long last_sn_update; 675 /* Time when it's ok to send next PERR */ 676 unsigned long next_perr; 677 /* Timestamp of last PREQ sent */ 678 unsigned long last_preq; 679 struct mesh_rmc *rmc; 680 spinlock_t mesh_preq_queue_lock; 681 struct mesh_preq_queue preq_queue; 682 int preq_queue_len; 683 struct mesh_stats mshstats; 684 struct mesh_config mshcfg; 685 atomic_t estab_plinks; 686 u32 mesh_seqnum; 687 bool accepting_plinks; 688 int num_gates; 689 struct beacon_data __rcu *beacon; 690 const u8 *ie; 691 u8 ie_len; 692 enum { 693 IEEE80211_MESH_SEC_NONE = 0x0, 694 IEEE80211_MESH_SEC_AUTHED = 0x1, 695 IEEE80211_MESH_SEC_SECURED = 0x2, 696 } security; 697 bool user_mpm; 698 /* Extensible Synchronization Framework */ 699 const struct ieee80211_mesh_sync_ops *sync_ops; 700 s64 sync_offset_clockdrift_max; 701 spinlock_t sync_offset_lock; 702 /* mesh power save */ 703 enum nl80211_mesh_power_mode nonpeer_pm; 704 int ps_peers_light_sleep; 705 int ps_peers_deep_sleep; 706 struct ps_data ps; 707 /* Channel Switching Support */ 708 struct mesh_csa_settings __rcu *csa; 709 enum { 710 IEEE80211_MESH_CSA_ROLE_NONE, 711 IEEE80211_MESH_CSA_ROLE_INIT, 712 IEEE80211_MESH_CSA_ROLE_REPEATER, 713 } csa_role; 714 u8 chsw_ttl; 715 u16 pre_value; 716 717 /* offset from skb->data while building IE */ 718 int meshconf_offset; 719 720 struct mesh_table *mesh_paths; 721 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 722 int mesh_paths_generation; 723 int mpp_paths_generation; 724 }; 725 726 #ifdef CONFIG_MAC80211_MESH 727 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 728 do { (msh)->mshstats.name++; } while (0) 729 #else 730 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 731 do { } while (0) 732 #endif 733 734 /** 735 * enum ieee80211_sub_if_data_flags - virtual interface flags 736 * 737 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 738 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 739 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 740 * associated stations and deliver multicast frames both 741 * back to wireless media and to the local net stack. 742 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 743 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 744 */ 745 enum ieee80211_sub_if_data_flags { 746 IEEE80211_SDATA_ALLMULTI = BIT(0), 747 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 748 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 749 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 750 IEEE80211_SDATA_IN_DRIVER = BIT(5), 751 }; 752 753 /** 754 * enum ieee80211_sdata_state_bits - virtual interface state bits 755 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 756 * mirrors netif_running() but is separate for interface type 757 * change handling while the interface is up 758 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 759 * mode, so queues are stopped 760 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 761 * to offchannel, reset when offchannel returns 762 */ 763 enum ieee80211_sdata_state_bits { 764 SDATA_STATE_RUNNING, 765 SDATA_STATE_OFFCHANNEL, 766 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 767 }; 768 769 /** 770 * enum ieee80211_chanctx_mode - channel context configuration mode 771 * 772 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 773 * multiple interfaces 774 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 775 * only by a single interface. This can be used for example for 776 * non-fixed channel IBSS. 777 */ 778 enum ieee80211_chanctx_mode { 779 IEEE80211_CHANCTX_SHARED, 780 IEEE80211_CHANCTX_EXCLUSIVE 781 }; 782 783 /** 784 * enum ieee80211_chanctx_replace_state - channel context replacement state 785 * 786 * This is used for channel context in-place reservations that require channel 787 * context switch/swap. 788 * 789 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 790 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 791 * by a (not yet registered) channel context pointed by %replace_ctx. 792 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 793 * replaces an existing channel context pointed to by %replace_ctx. 794 */ 795 enum ieee80211_chanctx_replace_state { 796 IEEE80211_CHANCTX_REPLACE_NONE, 797 IEEE80211_CHANCTX_WILL_BE_REPLACED, 798 IEEE80211_CHANCTX_REPLACES_OTHER, 799 }; 800 801 struct ieee80211_chanctx { 802 struct list_head list; 803 struct rcu_head rcu_head; 804 805 struct list_head assigned_vifs; 806 struct list_head reserved_vifs; 807 808 enum ieee80211_chanctx_replace_state replace_state; 809 struct ieee80211_chanctx *replace_ctx; 810 811 enum ieee80211_chanctx_mode mode; 812 bool driver_present; 813 814 struct ieee80211_chanctx_conf conf; 815 }; 816 817 struct mac80211_qos_map { 818 struct cfg80211_qos_map qos_map; 819 struct rcu_head rcu_head; 820 }; 821 822 enum txq_info_flags { 823 IEEE80211_TXQ_STOP, 824 IEEE80211_TXQ_AMPDU, 825 IEEE80211_TXQ_NO_AMSDU, 826 IEEE80211_TXQ_STOP_NETIF_TX, 827 }; 828 829 /** 830 * struct txq_info - per tid queue 831 * 832 * @tin: contains packets split into multiple flows 833 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 834 * a fq_flow which is already owned by a different tin 835 * @def_cvars: codel vars for @def_flow 836 * @frags: used to keep fragments created after dequeue 837 * @schedule_order: used with ieee80211_local->active_txqs 838 * @schedule_round: counter to prevent infinite loops on TXQ scheduling 839 */ 840 struct txq_info { 841 struct fq_tin tin; 842 struct fq_flow def_flow; 843 struct codel_vars def_cvars; 844 struct codel_stats cstats; 845 struct sk_buff_head frags; 846 struct list_head schedule_order; 847 u16 schedule_round; 848 unsigned long flags; 849 850 /* keep last! */ 851 struct ieee80211_txq txq; 852 }; 853 854 struct ieee80211_if_mntr { 855 u32 flags; 856 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 857 858 struct list_head list; 859 }; 860 861 /** 862 * struct ieee80211_if_nan - NAN state 863 * 864 * @conf: current NAN configuration 865 * @func_ids: a bitmap of available instance_id's 866 */ 867 struct ieee80211_if_nan { 868 struct cfg80211_nan_conf conf; 869 870 /* protects function_inst_ids */ 871 spinlock_t func_lock; 872 struct idr function_inst_ids; 873 }; 874 875 struct ieee80211_sub_if_data { 876 struct list_head list; 877 878 struct wireless_dev wdev; 879 880 /* keys */ 881 struct list_head key_list; 882 883 /* count for keys needing tailroom space allocation */ 884 int crypto_tx_tailroom_needed_cnt; 885 int crypto_tx_tailroom_pending_dec; 886 struct delayed_work dec_tailroom_needed_wk; 887 888 struct net_device *dev; 889 struct ieee80211_local *local; 890 891 unsigned int flags; 892 893 unsigned long state; 894 895 char name[IFNAMSIZ]; 896 897 /* Fragment table for host-based reassembly */ 898 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 899 unsigned int fragment_next; 900 901 /* TID bitmap for NoAck policy */ 902 u16 noack_map; 903 904 /* bit field of ACM bits (BIT(802.1D tag)) */ 905 u8 wmm_acm; 906 907 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 908 struct ieee80211_key __rcu *default_unicast_key; 909 struct ieee80211_key __rcu *default_multicast_key; 910 struct ieee80211_key __rcu *default_mgmt_key; 911 912 u16 sequence_number; 913 __be16 control_port_protocol; 914 bool control_port_no_encrypt; 915 bool control_port_over_nl80211; 916 int encrypt_headroom; 917 918 atomic_t num_tx_queued; 919 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 920 struct mac80211_qos_map __rcu *qos_map; 921 922 struct work_struct csa_finalize_work; 923 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 924 struct cfg80211_chan_def csa_chandef; 925 926 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 927 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 928 929 /* context reservation -- protected with chanctx_mtx */ 930 struct ieee80211_chanctx *reserved_chanctx; 931 struct cfg80211_chan_def reserved_chandef; 932 bool reserved_radar_required; 933 bool reserved_ready; 934 935 /* used to reconfigure hardware SM PS */ 936 struct work_struct recalc_smps; 937 938 struct work_struct work; 939 struct sk_buff_head skb_queue; 940 941 u8 needed_rx_chains; 942 enum ieee80211_smps_mode smps_mode; 943 944 int user_power_level; /* in dBm */ 945 int ap_power_level; /* in dBm */ 946 947 bool radar_required; 948 struct delayed_work dfs_cac_timer_work; 949 950 /* 951 * AP this belongs to: self in AP mode and 952 * corresponding AP in VLAN mode, NULL for 953 * all others (might be needed later in IBSS) 954 */ 955 struct ieee80211_if_ap *bss; 956 957 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 958 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 959 960 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 961 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 962 963 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 964 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 965 966 union { 967 struct ieee80211_if_ap ap; 968 struct ieee80211_if_wds wds; 969 struct ieee80211_if_vlan vlan; 970 struct ieee80211_if_managed mgd; 971 struct ieee80211_if_ibss ibss; 972 struct ieee80211_if_mesh mesh; 973 struct ieee80211_if_ocb ocb; 974 struct ieee80211_if_mntr mntr; 975 struct ieee80211_if_nan nan; 976 } u; 977 978 #ifdef CONFIG_MAC80211_DEBUGFS 979 struct { 980 struct dentry *subdir_stations; 981 struct dentry *default_unicast_key; 982 struct dentry *default_multicast_key; 983 struct dentry *default_mgmt_key; 984 } debugfs; 985 #endif 986 987 /* must be last, dynamically sized area in this! */ 988 struct ieee80211_vif vif; 989 }; 990 991 static inline 992 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 993 { 994 return container_of(p, struct ieee80211_sub_if_data, vif); 995 } 996 997 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 998 __acquires(&sdata->wdev.mtx) 999 { 1000 mutex_lock(&sdata->wdev.mtx); 1001 __acquire(&sdata->wdev.mtx); 1002 } 1003 1004 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 1005 __releases(&sdata->wdev.mtx) 1006 { 1007 mutex_unlock(&sdata->wdev.mtx); 1008 __release(&sdata->wdev.mtx); 1009 } 1010 1011 #define sdata_dereference(p, sdata) \ 1012 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1013 1014 static inline void 1015 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1016 { 1017 lockdep_assert_held(&sdata->wdev.mtx); 1018 } 1019 1020 static inline int 1021 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1022 { 1023 switch (chandef->width) { 1024 case NL80211_CHAN_WIDTH_5: 1025 return 2; 1026 case NL80211_CHAN_WIDTH_10: 1027 return 1; 1028 default: 1029 return 0; 1030 } 1031 } 1032 1033 static inline int 1034 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1035 { 1036 struct ieee80211_chanctx_conf *chanctx_conf; 1037 int shift = 0; 1038 1039 rcu_read_lock(); 1040 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1041 if (chanctx_conf) 1042 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1043 rcu_read_unlock(); 1044 1045 return shift; 1046 } 1047 1048 enum { 1049 IEEE80211_RX_MSG = 1, 1050 IEEE80211_TX_STATUS_MSG = 2, 1051 }; 1052 1053 enum queue_stop_reason { 1054 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1055 IEEE80211_QUEUE_STOP_REASON_PS, 1056 IEEE80211_QUEUE_STOP_REASON_CSA, 1057 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1058 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1059 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1060 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1061 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1062 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1063 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1064 1065 IEEE80211_QUEUE_STOP_REASONS, 1066 }; 1067 1068 #ifdef CONFIG_MAC80211_LEDS 1069 struct tpt_led_trigger { 1070 char name[32]; 1071 const struct ieee80211_tpt_blink *blink_table; 1072 unsigned int blink_table_len; 1073 struct timer_list timer; 1074 struct ieee80211_local *local; 1075 unsigned long prev_traffic; 1076 unsigned long tx_bytes, rx_bytes; 1077 unsigned int active, want; 1078 bool running; 1079 }; 1080 #endif 1081 1082 /** 1083 * mac80211 scan flags - currently active scan mode 1084 * 1085 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1086 * well be on the operating channel 1087 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1088 * determine if we are on the operating channel or not 1089 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1090 * channel. This should not interrupt normal traffic. 1091 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1092 * that the scan completed. 1093 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1094 * a scan complete for an aborted scan. 1095 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1096 * cancelled. 1097 */ 1098 enum { 1099 SCAN_SW_SCANNING, 1100 SCAN_HW_SCANNING, 1101 SCAN_ONCHANNEL_SCANNING, 1102 SCAN_COMPLETED, 1103 SCAN_ABORTED, 1104 SCAN_HW_CANCELLED, 1105 }; 1106 1107 /** 1108 * enum mac80211_scan_state - scan state machine states 1109 * 1110 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1111 * determines if we should keep on scanning or switch back to the 1112 * operating channel 1113 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1114 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1115 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1116 * send out data 1117 * @SCAN_RESUME: Resume the scan and scan the next channel 1118 * @SCAN_ABORT: Abort the scan and go back to operating channel 1119 */ 1120 enum mac80211_scan_state { 1121 SCAN_DECISION, 1122 SCAN_SET_CHANNEL, 1123 SCAN_SEND_PROBE, 1124 SCAN_SUSPEND, 1125 SCAN_RESUME, 1126 SCAN_ABORT, 1127 }; 1128 1129 struct ieee80211_local { 1130 /* embed the driver visible part. 1131 * don't cast (use the static inlines below), but we keep 1132 * it first anyway so they become a no-op */ 1133 struct ieee80211_hw hw; 1134 1135 struct fq fq; 1136 struct codel_vars *cvars; 1137 struct codel_params cparams; 1138 1139 /* protects active_txqs and txqi->schedule_order */ 1140 spinlock_t active_txq_lock[IEEE80211_NUM_ACS]; 1141 struct list_head active_txqs[IEEE80211_NUM_ACS]; 1142 u16 schedule_round[IEEE80211_NUM_ACS]; 1143 1144 u16 airtime_flags; 1145 1146 const struct ieee80211_ops *ops; 1147 1148 /* 1149 * private workqueue to mac80211. mac80211 makes this accessible 1150 * via ieee80211_queue_work() 1151 */ 1152 struct workqueue_struct *workqueue; 1153 1154 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1155 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1156 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1157 spinlock_t queue_stop_reason_lock; 1158 1159 int open_count; 1160 int monitors, cooked_mntrs; 1161 /* number of interfaces with corresponding FIF_ flags */ 1162 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1163 fif_probe_req; 1164 int probe_req_reg; 1165 unsigned int filter_flags; /* FIF_* */ 1166 1167 bool wiphy_ciphers_allocated; 1168 1169 bool use_chanctx; 1170 1171 /* protects the aggregated multicast list and filter calls */ 1172 spinlock_t filter_lock; 1173 1174 /* used for uploading changed mc list */ 1175 struct work_struct reconfig_filter; 1176 1177 /* aggregated multicast list */ 1178 struct netdev_hw_addr_list mc_list; 1179 1180 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1181 1182 /* 1183 * suspended is true if we finished all the suspend _and_ we have 1184 * not yet come up from resume. This is to be used by mac80211 1185 * to ensure driver sanity during suspend and mac80211's own 1186 * sanity. It can eventually be used for WoW as well. 1187 */ 1188 bool suspended; 1189 1190 /* 1191 * Resuming is true while suspended, but when we're reprogramming the 1192 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1193 * again even though some other parts of the stack are still suspended 1194 * and we still drop received frames to avoid waking the stack. 1195 */ 1196 bool resuming; 1197 1198 /* 1199 * quiescing is true during the suspend process _only_ to 1200 * ease timer cancelling etc. 1201 */ 1202 bool quiescing; 1203 1204 /* device is started */ 1205 bool started; 1206 1207 /* device is during a HW reconfig */ 1208 bool in_reconfig; 1209 1210 /* wowlan is enabled -- don't reconfig on resume */ 1211 bool wowlan; 1212 1213 struct work_struct radar_detected_work; 1214 1215 /* number of RX chains the hardware has */ 1216 u8 rx_chains; 1217 1218 /* bitmap of which sbands were copied */ 1219 u8 sband_allocated; 1220 1221 int tx_headroom; /* required headroom for hardware/radiotap */ 1222 1223 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1224 * added to skb_queue will be processed, but frames in 1225 * skb_queue_unreliable may be dropped if the total length of these 1226 * queues increases over the limit. */ 1227 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1228 struct tasklet_struct tasklet; 1229 struct sk_buff_head skb_queue; 1230 struct sk_buff_head skb_queue_unreliable; 1231 1232 spinlock_t rx_path_lock; 1233 1234 /* Station data */ 1235 /* 1236 * The mutex only protects the list, hash table and 1237 * counter, reads are done with RCU. 1238 */ 1239 struct mutex sta_mtx; 1240 spinlock_t tim_lock; 1241 unsigned long num_sta; 1242 struct list_head sta_list; 1243 struct rhltable sta_hash; 1244 struct timer_list sta_cleanup; 1245 int sta_generation; 1246 1247 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1248 struct tasklet_struct tx_pending_tasklet; 1249 struct tasklet_struct wake_txqs_tasklet; 1250 1251 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1252 1253 /* number of interfaces with allmulti RX */ 1254 atomic_t iff_allmultis; 1255 1256 struct rate_control_ref *rate_ctrl; 1257 1258 struct crypto_cipher *wep_tx_tfm; 1259 struct crypto_cipher *wep_rx_tfm; 1260 u32 wep_iv; 1261 1262 /* see iface.c */ 1263 struct list_head interfaces; 1264 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1265 struct mutex iflist_mtx; 1266 1267 /* 1268 * Key mutex, protects sdata's key_list and sta_info's 1269 * key pointers and ptk_idx (write access, they're RCU.) 1270 */ 1271 struct mutex key_mtx; 1272 1273 /* mutex for scan and work locking */ 1274 struct mutex mtx; 1275 1276 /* Scanning and BSS list */ 1277 unsigned long scanning; 1278 struct cfg80211_ssid scan_ssid; 1279 struct cfg80211_scan_request *int_scan_req; 1280 struct cfg80211_scan_request __rcu *scan_req; 1281 struct ieee80211_scan_request *hw_scan_req; 1282 struct cfg80211_chan_def scan_chandef; 1283 enum nl80211_band hw_scan_band; 1284 int scan_channel_idx; 1285 int scan_ies_len; 1286 int hw_scan_ies_bufsize; 1287 struct cfg80211_scan_info scan_info; 1288 1289 struct work_struct sched_scan_stopped_work; 1290 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1291 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1292 u8 scan_addr[ETH_ALEN]; 1293 1294 unsigned long leave_oper_channel_time; 1295 enum mac80211_scan_state next_scan_state; 1296 struct delayed_work scan_work; 1297 struct ieee80211_sub_if_data __rcu *scan_sdata; 1298 /* For backward compatibility only -- do not use */ 1299 struct cfg80211_chan_def _oper_chandef; 1300 1301 /* Temporary remain-on-channel for off-channel operations */ 1302 struct ieee80211_channel *tmp_channel; 1303 1304 /* channel contexts */ 1305 struct list_head chanctx_list; 1306 struct mutex chanctx_mtx; 1307 1308 #ifdef CONFIG_MAC80211_LEDS 1309 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1310 struct led_trigger tpt_led; 1311 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1312 atomic_t radio_led_active, tpt_led_active; 1313 struct tpt_led_trigger *tpt_led_trigger; 1314 #endif 1315 1316 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1317 /* SNMP counters */ 1318 /* dot11CountersTable */ 1319 u32 dot11TransmittedFragmentCount; 1320 u32 dot11MulticastTransmittedFrameCount; 1321 u32 dot11FailedCount; 1322 u32 dot11RetryCount; 1323 u32 dot11MultipleRetryCount; 1324 u32 dot11FrameDuplicateCount; 1325 u32 dot11ReceivedFragmentCount; 1326 u32 dot11MulticastReceivedFrameCount; 1327 u32 dot11TransmittedFrameCount; 1328 1329 /* TX/RX handler statistics */ 1330 unsigned int tx_handlers_drop; 1331 unsigned int tx_handlers_queued; 1332 unsigned int tx_handlers_drop_wep; 1333 unsigned int tx_handlers_drop_not_assoc; 1334 unsigned int tx_handlers_drop_unauth_port; 1335 unsigned int rx_handlers_drop; 1336 unsigned int rx_handlers_queued; 1337 unsigned int rx_handlers_drop_nullfunc; 1338 unsigned int rx_handlers_drop_defrag; 1339 unsigned int tx_expand_skb_head; 1340 unsigned int tx_expand_skb_head_cloned; 1341 unsigned int rx_expand_skb_head_defrag; 1342 unsigned int rx_handlers_fragments; 1343 unsigned int tx_status_drop; 1344 #define I802_DEBUG_INC(c) (c)++ 1345 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1346 #define I802_DEBUG_INC(c) do { } while (0) 1347 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1348 1349 1350 int total_ps_buffered; /* total number of all buffered unicast and 1351 * multicast packets for power saving stations 1352 */ 1353 1354 bool pspolling; 1355 bool offchannel_ps_enabled; 1356 /* 1357 * PS can only be enabled when we have exactly one managed 1358 * interface (and monitors) in PS, this then points there. 1359 */ 1360 struct ieee80211_sub_if_data *ps_sdata; 1361 struct work_struct dynamic_ps_enable_work; 1362 struct work_struct dynamic_ps_disable_work; 1363 struct timer_list dynamic_ps_timer; 1364 struct notifier_block ifa_notifier; 1365 struct notifier_block ifa6_notifier; 1366 1367 /* 1368 * The dynamic ps timeout configured from user space via WEXT - 1369 * this will override whatever chosen by mac80211 internally. 1370 */ 1371 int dynamic_ps_forced_timeout; 1372 1373 int user_power_level; /* in dBm, for all interfaces */ 1374 1375 enum ieee80211_smps_mode smps_mode; 1376 1377 struct work_struct restart_work; 1378 1379 #ifdef CONFIG_MAC80211_DEBUGFS 1380 struct local_debugfsdentries { 1381 struct dentry *rcdir; 1382 struct dentry *keys; 1383 } debugfs; 1384 bool force_tx_status; 1385 #endif 1386 1387 /* 1388 * Remain-on-channel support 1389 */ 1390 struct delayed_work roc_work; 1391 struct list_head roc_list; 1392 struct work_struct hw_roc_start, hw_roc_done; 1393 unsigned long hw_roc_start_time; 1394 u64 roc_cookie_counter; 1395 1396 struct idr ack_status_frames; 1397 spinlock_t ack_status_lock; 1398 1399 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1400 1401 /* virtual monitor interface */ 1402 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1403 struct cfg80211_chan_def monitor_chandef; 1404 1405 /* extended capabilities provided by mac80211 */ 1406 u8 ext_capa[8]; 1407 1408 /* TDLS channel switch */ 1409 struct work_struct tdls_chsw_work; 1410 struct sk_buff_head skb_queue_tdls_chsw; 1411 }; 1412 1413 static inline struct ieee80211_sub_if_data * 1414 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1415 { 1416 return netdev_priv(dev); 1417 } 1418 1419 static inline struct ieee80211_sub_if_data * 1420 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1421 { 1422 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1423 } 1424 1425 static inline struct ieee80211_supported_band * 1426 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1427 { 1428 struct ieee80211_local *local = sdata->local; 1429 struct ieee80211_chanctx_conf *chanctx_conf; 1430 enum nl80211_band band; 1431 1432 rcu_read_lock(); 1433 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1434 1435 if (WARN_ON_ONCE(!chanctx_conf)) { 1436 rcu_read_unlock(); 1437 return NULL; 1438 } 1439 1440 band = chanctx_conf->def.chan->band; 1441 rcu_read_unlock(); 1442 1443 return local->hw.wiphy->bands[band]; 1444 } 1445 1446 /* this struct holds the value parsing from channel switch IE */ 1447 struct ieee80211_csa_ie { 1448 struct cfg80211_chan_def chandef; 1449 u8 mode; 1450 u8 count; 1451 u8 ttl; 1452 u16 pre_value; 1453 u16 reason_code; 1454 u32 max_switch_time; 1455 }; 1456 1457 /* Parsed Information Elements */ 1458 struct ieee802_11_elems { 1459 const u8 *ie_start; 1460 size_t total_len; 1461 1462 /* pointers to IEs */ 1463 const struct ieee80211_tdls_lnkie *lnk_id; 1464 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1465 const u8 *ext_capab; 1466 const u8 *ssid; 1467 const u8 *supp_rates; 1468 const u8 *ds_params; 1469 const struct ieee80211_tim_ie *tim; 1470 const u8 *challenge; 1471 const u8 *rsn; 1472 const u8 *erp_info; 1473 const u8 *ext_supp_rates; 1474 const u8 *wmm_info; 1475 const u8 *wmm_param; 1476 const struct ieee80211_ht_cap *ht_cap_elem; 1477 const struct ieee80211_ht_operation *ht_operation; 1478 const struct ieee80211_vht_cap *vht_cap_elem; 1479 const struct ieee80211_vht_operation *vht_operation; 1480 const struct ieee80211_meshconf_ie *mesh_config; 1481 const u8 *he_cap; 1482 const struct ieee80211_he_operation *he_operation; 1483 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1484 const u8 *uora_element; 1485 const u8 *mesh_id; 1486 const u8 *peering; 1487 const __le16 *awake_window; 1488 const u8 *preq; 1489 const u8 *prep; 1490 const u8 *perr; 1491 const struct ieee80211_rann_ie *rann; 1492 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1493 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1494 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1495 const u8 *max_channel_switch_time; 1496 const u8 *country_elem; 1497 const u8 *pwr_constr_elem; 1498 const u8 *cisco_dtpc_elem; 1499 const struct ieee80211_timeout_interval_ie *timeout_int; 1500 const u8 *opmode_notif; 1501 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1502 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1503 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1504 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie; 1505 const struct ieee80211_bssid_index *bssid_index; 1506 u8 max_bssid_indicator; 1507 u8 dtim_count; 1508 u8 dtim_period; 1509 1510 /* length of them, respectively */ 1511 u8 ext_capab_len; 1512 u8 ssid_len; 1513 u8 supp_rates_len; 1514 u8 tim_len; 1515 u8 challenge_len; 1516 u8 rsn_len; 1517 u8 ext_supp_rates_len; 1518 u8 wmm_info_len; 1519 u8 wmm_param_len; 1520 u8 he_cap_len; 1521 u8 mesh_id_len; 1522 u8 peering_len; 1523 u8 preq_len; 1524 u8 prep_len; 1525 u8 perr_len; 1526 u8 country_elem_len; 1527 u8 bssid_index_len; 1528 1529 /* whether a parse error occurred while retrieving these elements */ 1530 bool parse_error; 1531 }; 1532 1533 static inline struct ieee80211_local *hw_to_local( 1534 struct ieee80211_hw *hw) 1535 { 1536 return container_of(hw, struct ieee80211_local, hw); 1537 } 1538 1539 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1540 { 1541 return container_of(txq, struct txq_info, txq); 1542 } 1543 1544 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1545 { 1546 struct txq_info *txqi = to_txq_info(txq); 1547 1548 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1549 } 1550 1551 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1552 { 1553 return ether_addr_equal(raddr, addr) || 1554 is_broadcast_ether_addr(raddr); 1555 } 1556 1557 static inline bool 1558 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1559 { 1560 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1561 status->flag & RX_FLAG_MACTIME_END); 1562 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1563 return true; 1564 /* can't handle non-legacy preamble yet */ 1565 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1566 status->encoding == RX_ENC_LEGACY) 1567 return true; 1568 return false; 1569 } 1570 1571 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1572 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1573 1574 /* This function returns the number of multicast stations connected to this 1575 * interface. It returns -1 if that number is not tracked, that is for netdevs 1576 * not in AP or AP_VLAN mode or when using 4addr. 1577 */ 1578 static inline int 1579 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1580 { 1581 if (sdata->vif.type == NL80211_IFTYPE_AP) 1582 return atomic_read(&sdata->u.ap.num_mcast_sta); 1583 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1584 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1585 return -1; 1586 } 1587 1588 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1589 struct ieee80211_rx_status *status, 1590 unsigned int mpdu_len, 1591 unsigned int mpdu_offset); 1592 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1593 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1594 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1595 u32 changed); 1596 void ieee80211_configure_filter(struct ieee80211_local *local); 1597 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1598 1599 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1600 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1601 u64 *cookie, gfp_t gfp); 1602 1603 void ieee80211_check_fast_rx(struct sta_info *sta); 1604 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1605 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1606 void ieee80211_clear_fast_rx(struct sta_info *sta); 1607 1608 /* STA code */ 1609 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1610 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1611 struct cfg80211_auth_request *req); 1612 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1613 struct cfg80211_assoc_request *req); 1614 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1615 struct cfg80211_deauth_request *req); 1616 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1617 struct cfg80211_disassoc_request *req); 1618 void ieee80211_send_pspoll(struct ieee80211_local *local, 1619 struct ieee80211_sub_if_data *sdata); 1620 void ieee80211_recalc_ps(struct ieee80211_local *local); 1621 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1622 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1623 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1624 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1625 struct sk_buff *skb); 1626 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1627 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1628 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1629 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1630 __le16 fc, bool acked); 1631 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1632 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1633 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1634 1635 /* IBSS code */ 1636 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1637 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1638 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1639 const u8 *bssid, const u8 *addr, u32 supp_rates); 1640 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1641 struct cfg80211_ibss_params *params); 1642 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1643 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1644 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1645 struct sk_buff *skb); 1646 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1647 struct cfg80211_csa_settings *csa_settings); 1648 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1649 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1650 1651 /* OCB code */ 1652 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1653 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1654 const u8 *bssid, const u8 *addr, u32 supp_rates); 1655 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1656 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1657 struct ocb_setup *setup); 1658 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1659 1660 /* mesh code */ 1661 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1662 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1663 struct sk_buff *skb); 1664 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1665 struct cfg80211_csa_settings *csa_settings); 1666 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1667 1668 /* scan/BSS handling */ 1669 void ieee80211_scan_work(struct work_struct *work); 1670 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1671 const u8 *ssid, u8 ssid_len, 1672 struct ieee80211_channel **channels, 1673 unsigned int n_channels, 1674 enum nl80211_bss_scan_width scan_width); 1675 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1676 struct cfg80211_scan_request *req); 1677 void ieee80211_scan_cancel(struct ieee80211_local *local); 1678 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1679 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1680 1681 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1682 struct ieee80211_bss * 1683 ieee80211_bss_info_update(struct ieee80211_local *local, 1684 struct ieee80211_rx_status *rx_status, 1685 struct ieee80211_mgmt *mgmt, 1686 size_t len, 1687 struct ieee80211_channel *channel); 1688 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1689 struct ieee80211_bss *bss); 1690 1691 /* scheduled scan handling */ 1692 int 1693 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1694 struct cfg80211_sched_scan_request *req); 1695 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1696 struct cfg80211_sched_scan_request *req); 1697 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1698 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1699 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1700 1701 /* off-channel/mgmt-tx */ 1702 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1703 void ieee80211_offchannel_return(struct ieee80211_local *local); 1704 void ieee80211_roc_setup(struct ieee80211_local *local); 1705 void ieee80211_start_next_roc(struct ieee80211_local *local); 1706 void ieee80211_roc_purge(struct ieee80211_local *local, 1707 struct ieee80211_sub_if_data *sdata); 1708 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1709 struct ieee80211_channel *chan, 1710 unsigned int duration, u64 *cookie); 1711 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1712 struct wireless_dev *wdev, u64 cookie); 1713 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1714 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1715 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1716 struct wireless_dev *wdev, u64 cookie); 1717 1718 /* channel switch handling */ 1719 void ieee80211_csa_finalize_work(struct work_struct *work); 1720 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1721 struct cfg80211_csa_settings *params); 1722 1723 /* interface handling */ 1724 int ieee80211_iface_init(void); 1725 void ieee80211_iface_exit(void); 1726 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1727 unsigned char name_assign_type, 1728 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1729 struct vif_params *params); 1730 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1731 enum nl80211_iftype type); 1732 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1733 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1734 u32 ieee80211_idle_off(struct ieee80211_local *local); 1735 void ieee80211_recalc_idle(struct ieee80211_local *local); 1736 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1737 const int offset); 1738 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1739 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1740 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1741 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1742 1743 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1744 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1745 bool update_bss); 1746 1747 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1748 { 1749 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1750 } 1751 1752 /* tx handling */ 1753 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1754 void ieee80211_tx_pending(unsigned long data); 1755 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1756 struct net_device *dev); 1757 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1758 struct net_device *dev); 1759 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1760 struct net_device *dev, 1761 u32 info_flags, 1762 u32 ctrl_flags); 1763 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1764 struct sk_buff_head *skbs); 1765 struct sk_buff * 1766 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1767 struct sk_buff *skb, u32 info_flags); 1768 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1769 struct ieee80211_supported_band *sband, 1770 int retry_count, int shift, bool send_to_cooked); 1771 1772 void ieee80211_check_fast_xmit(struct sta_info *sta); 1773 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1774 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1775 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1776 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1777 const u8 *buf, size_t len, 1778 const u8 *dest, __be16 proto, bool unencrypted); 1779 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev, 1780 const u8 *buf, size_t len); 1781 1782 /* HT */ 1783 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1784 struct ieee80211_sta_ht_cap *ht_cap); 1785 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1786 struct ieee80211_supported_band *sband, 1787 const struct ieee80211_ht_cap *ht_cap_ie, 1788 struct sta_info *sta); 1789 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1790 const u8 *da, u16 tid, 1791 u16 initiator, u16 reason_code); 1792 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1793 enum ieee80211_smps_mode smps, const u8 *da, 1794 const u8 *bssid); 1795 void ieee80211_request_smps_ap_work(struct work_struct *work); 1796 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1797 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1798 enum ieee80211_smps_mode smps_mode_new); 1799 1800 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1801 u16 initiator, u16 reason, bool stop); 1802 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1803 u16 initiator, u16 reason, bool stop); 1804 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1805 u8 dialog_token, u16 timeout, 1806 u16 start_seq_num, u16 ba_policy, u16 tid, 1807 u16 buf_size, bool tx, bool auto_seq); 1808 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1809 enum ieee80211_agg_stop_reason reason); 1810 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1811 struct sta_info *sta, 1812 struct ieee80211_mgmt *mgmt, size_t len); 1813 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1814 struct sta_info *sta, 1815 struct ieee80211_mgmt *mgmt, 1816 size_t len); 1817 void ieee80211_process_addba_request(struct ieee80211_local *local, 1818 struct sta_info *sta, 1819 struct ieee80211_mgmt *mgmt, 1820 size_t len); 1821 1822 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1823 enum ieee80211_agg_stop_reason reason); 1824 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1825 enum ieee80211_agg_stop_reason reason); 1826 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1827 struct tid_ampdu_tx *tid_tx); 1828 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1829 struct tid_ampdu_tx *tid_tx); 1830 void ieee80211_ba_session_work(struct work_struct *work); 1831 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1832 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1833 1834 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1835 enum nl80211_smps_mode 1836 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1837 1838 /* VHT */ 1839 void 1840 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1841 struct ieee80211_supported_band *sband, 1842 const struct ieee80211_vht_cap *vht_cap_ie, 1843 struct sta_info *sta); 1844 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1845 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1846 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1847 enum ieee80211_sta_rx_bandwidth 1848 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1849 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1850 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1851 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1852 struct ieee80211_mgmt *mgmt); 1853 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1854 struct sta_info *sta, u8 opmode, 1855 enum nl80211_band band); 1856 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1857 struct sta_info *sta, u8 opmode, 1858 enum nl80211_band band); 1859 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1860 struct ieee80211_sta_vht_cap *vht_cap); 1861 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1862 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1863 enum nl80211_chan_width 1864 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1865 1866 /* HE */ 1867 void 1868 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1869 struct ieee80211_supported_band *sband, 1870 const u8 *he_cap_ie, u8 he_cap_len, 1871 struct sta_info *sta); 1872 1873 /* Spectrum management */ 1874 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1875 struct ieee80211_mgmt *mgmt, 1876 size_t len); 1877 /** 1878 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1879 * @sdata: the sdata of the interface which has received the frame 1880 * @elems: parsed 802.11 elements received with the frame 1881 * @current_band: indicates the current band 1882 * @sta_flags: contains information about own capabilities and restrictions 1883 * to decide which channel switch announcements can be accepted. Only the 1884 * following subset of &enum ieee80211_sta_flags are evaluated: 1885 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1886 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1887 * %IEEE80211_STA_DISABLE_160MHZ. 1888 * @bssid: the currently connected bssid (for reporting) 1889 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1890 All of them will be filled with if success only. 1891 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1892 */ 1893 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1894 struct ieee802_11_elems *elems, 1895 enum nl80211_band current_band, 1896 u32 sta_flags, u8 *bssid, 1897 struct ieee80211_csa_ie *csa_ie); 1898 1899 /* Suspend/resume and hw reconfiguration */ 1900 int ieee80211_reconfig(struct ieee80211_local *local); 1901 void ieee80211_stop_device(struct ieee80211_local *local); 1902 1903 int __ieee80211_suspend(struct ieee80211_hw *hw, 1904 struct cfg80211_wowlan *wowlan); 1905 1906 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1907 { 1908 struct ieee80211_local *local = hw_to_local(hw); 1909 1910 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1911 !test_bit(SCAN_COMPLETED, &local->scanning), 1912 "%s: resume with hardware scan still in progress\n", 1913 wiphy_name(hw->wiphy)); 1914 1915 return ieee80211_reconfig(hw_to_local(hw)); 1916 } 1917 1918 /* utility functions/constants */ 1919 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1920 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1921 int rate, int erp, int short_preamble, 1922 int shift); 1923 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1924 struct ieee80211_tx_queue_params *qparam, 1925 int ac); 1926 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1927 bool bss_notify, bool enable_qos); 1928 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1929 struct sta_info *sta, struct sk_buff *skb, 1930 u32 txdata_flags); 1931 1932 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1933 struct sk_buff *skb, int tid, 1934 enum nl80211_band band, u32 txdata_flags); 1935 1936 static inline void 1937 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1938 struct sk_buff *skb, int tid, 1939 enum nl80211_band band, u32 txdata_flags) 1940 { 1941 rcu_read_lock(); 1942 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1943 rcu_read_unlock(); 1944 } 1945 1946 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1947 struct sk_buff *skb, int tid) 1948 { 1949 struct ieee80211_chanctx_conf *chanctx_conf; 1950 1951 rcu_read_lock(); 1952 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1953 if (WARN_ON(!chanctx_conf)) { 1954 rcu_read_unlock(); 1955 kfree_skb(skb); 1956 return; 1957 } 1958 1959 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1960 chanctx_conf->def.chan->band, 0); 1961 rcu_read_unlock(); 1962 } 1963 1964 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1965 struct sk_buff *skb) 1966 { 1967 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1968 ieee80211_tx_skb_tid(sdata, skb, 7); 1969 } 1970 1971 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1972 struct ieee802_11_elems *elems, 1973 u64 filter, u32 crc, u8 *transmitter_bssid, 1974 u8 *bss_bssid); 1975 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1976 bool action, 1977 struct ieee802_11_elems *elems, 1978 u8 *transmitter_bssid, 1979 u8 *bss_bssid) 1980 { 1981 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0, 1982 transmitter_bssid, bss_bssid); 1983 } 1984 1985 1986 extern const int ieee802_1d_to_ac[8]; 1987 1988 static inline int ieee80211_ac_from_tid(int tid) 1989 { 1990 return ieee802_1d_to_ac[tid & 7]; 1991 } 1992 1993 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1994 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1995 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1996 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1997 struct ieee80211_sub_if_data *sdata, 1998 bool powersave); 1999 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 2000 struct ieee80211_hdr *hdr); 2001 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 2002 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 2003 2004 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 2005 unsigned long queues, 2006 enum queue_stop_reason reason, 2007 bool refcounted); 2008 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 2009 struct ieee80211_sub_if_data *sdata, 2010 enum queue_stop_reason reason); 2011 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 2012 struct ieee80211_sub_if_data *sdata, 2013 enum queue_stop_reason reason); 2014 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 2015 unsigned long queues, 2016 enum queue_stop_reason reason, 2017 bool refcounted); 2018 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 2019 enum queue_stop_reason reason, 2020 bool refcounted); 2021 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 2022 enum queue_stop_reason reason, 2023 bool refcounted); 2024 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 2025 void ieee80211_add_pending_skb(struct ieee80211_local *local, 2026 struct sk_buff *skb); 2027 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 2028 struct sk_buff_head *skbs); 2029 void ieee80211_flush_queues(struct ieee80211_local *local, 2030 struct ieee80211_sub_if_data *sdata, bool drop); 2031 void __ieee80211_flush_queues(struct ieee80211_local *local, 2032 struct ieee80211_sub_if_data *sdata, 2033 unsigned int queues, bool drop); 2034 2035 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2036 { 2037 /* 2038 * It's unsafe to try to do any work during reconfigure flow. 2039 * When the flow ends the work will be requeued. 2040 */ 2041 if (local->in_reconfig) 2042 return false; 2043 2044 /* 2045 * If quiescing is set, we are racing with __ieee80211_suspend. 2046 * __ieee80211_suspend flushes the workers after setting quiescing, 2047 * and we check quiescing / suspended before enqueing new workers. 2048 * We should abort the worker to avoid the races below. 2049 */ 2050 if (local->quiescing) 2051 return false; 2052 2053 /* 2054 * We might already be suspended if the following scenario occurs: 2055 * __ieee80211_suspend Control path 2056 * 2057 * if (local->quiescing) 2058 * return; 2059 * local->quiescing = true; 2060 * flush_workqueue(); 2061 * queue_work(...); 2062 * local->suspended = true; 2063 * local->quiescing = false; 2064 * worker starts running... 2065 */ 2066 if (local->suspended) 2067 return false; 2068 2069 return true; 2070 } 2071 2072 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2073 void ieee80211_txq_set_params(struct ieee80211_local *local); 2074 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2075 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2076 struct sta_info *sta, 2077 struct txq_info *txq, int tid); 2078 void ieee80211_txq_purge(struct ieee80211_local *local, 2079 struct txq_info *txqi); 2080 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2081 struct ieee80211_sub_if_data *sdata); 2082 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2083 struct txq_info *txqi); 2084 void ieee80211_wake_txqs(unsigned long data); 2085 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2086 u16 transaction, u16 auth_alg, u16 status, 2087 const u8 *extra, size_t extra_len, const u8 *bssid, 2088 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2089 u32 tx_flags); 2090 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2091 const u8 *bssid, u16 stype, u16 reason, 2092 bool send_frame, u8 *frame_buf); 2093 2094 enum { 2095 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2096 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2097 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2098 }; 2099 2100 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2101 size_t buffer_len, 2102 struct ieee80211_scan_ies *ie_desc, 2103 const u8 *ie, size_t ie_len, 2104 u8 bands_used, u32 *rate_masks, 2105 struct cfg80211_chan_def *chandef, 2106 u32 flags); 2107 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2108 const u8 *src, const u8 *dst, 2109 u32 ratemask, 2110 struct ieee80211_channel *chan, 2111 const u8 *ssid, size_t ssid_len, 2112 const u8 *ie, size_t ie_len, 2113 u32 flags); 2114 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2115 struct ieee802_11_elems *elems, 2116 enum nl80211_band band, u32 *basic_rates); 2117 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2118 enum ieee80211_smps_mode smps_mode); 2119 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2120 enum ieee80211_smps_mode smps_mode); 2121 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2122 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2123 2124 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2125 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2126 u16 cap); 2127 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2128 const struct cfg80211_chan_def *chandef, 2129 u16 prot_mode, bool rifs_mode); 2130 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2131 const struct cfg80211_chan_def *chandef); 2132 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2133 u32 cap); 2134 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2135 const struct cfg80211_chan_def *chandef); 2136 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2137 const struct ieee80211_sta_he_cap *he_cap, 2138 u8 *end); 2139 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2140 const struct ieee80211_supported_band *sband, 2141 const u8 *srates, int srates_len, u32 *rates); 2142 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2143 struct sk_buff *skb, bool need_basic, 2144 enum nl80211_band band); 2145 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2146 struct sk_buff *skb, bool need_basic, 2147 enum nl80211_band band); 2148 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2149 2150 /* channel management */ 2151 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2152 struct cfg80211_chan_def *chandef); 2153 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2154 const struct ieee80211_vht_operation *oper, 2155 const struct ieee80211_ht_operation *htop, 2156 struct cfg80211_chan_def *chandef); 2157 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2158 2159 int __must_check 2160 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2161 const struct cfg80211_chan_def *chandef, 2162 enum ieee80211_chanctx_mode mode); 2163 int __must_check 2164 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2165 const struct cfg80211_chan_def *chandef, 2166 enum ieee80211_chanctx_mode mode, 2167 bool radar_required); 2168 int __must_check 2169 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2170 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2171 2172 int __must_check 2173 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2174 const struct cfg80211_chan_def *chandef, 2175 u32 *changed); 2176 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2177 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2178 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2179 bool clear); 2180 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2181 struct ieee80211_chanctx *ctx); 2182 2183 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2184 struct ieee80211_chanctx *chanctx); 2185 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2186 struct ieee80211_chanctx *ctx); 2187 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2188 2189 void ieee80211_dfs_cac_timer(unsigned long data); 2190 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2191 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2192 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2193 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2194 struct cfg80211_csa_settings *csa_settings); 2195 2196 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2197 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2198 const struct ieee80211_cipher_scheme * 2199 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2200 enum nl80211_iftype iftype); 2201 int ieee80211_cs_headroom(struct ieee80211_local *local, 2202 struct cfg80211_crypto_settings *crypto, 2203 enum nl80211_iftype iftype); 2204 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2205 struct ieee80211_sub_if_data *sdata); 2206 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2207 const struct cfg80211_chan_def *chandef, 2208 enum ieee80211_chanctx_mode chanmode, 2209 u8 radar_detect); 2210 int ieee80211_max_num_channels(struct ieee80211_local *local); 2211 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2212 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2213 struct ieee80211_chanctx *ctx); 2214 2215 /* TDLS */ 2216 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2217 const u8 *peer, u8 action_code, u8 dialog_token, 2218 u16 status_code, u32 peer_capability, 2219 bool initiator, const u8 *extra_ies, 2220 size_t extra_ies_len); 2221 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2222 const u8 *peer, enum nl80211_tdls_operation oper); 2223 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2224 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2225 const u8 *addr, u8 oper_class, 2226 struct cfg80211_chan_def *chandef); 2227 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2228 struct net_device *dev, 2229 const u8 *addr); 2230 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2231 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2232 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata, 2233 const u8 *peer, u16 reason); 2234 const char *ieee80211_get_reason_code_string(u16 reason_code); 2235 2236 extern const struct ethtool_ops ieee80211_ethtool_ops; 2237 2238 #ifdef CONFIG_MAC80211_NOINLINE 2239 #define debug_noinline noinline 2240 #else 2241 #define debug_noinline 2242 #endif 2243 2244 #endif /* IEEE80211_I_H */ 2245