1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef IEEE80211_I_H 14 #define IEEE80211_I_H 15 16 #include <linux/kernel.h> 17 #include <linux/device.h> 18 #include <linux/if_ether.h> 19 #include <linux/interrupt.h> 20 #include <linux/list.h> 21 #include <linux/netdevice.h> 22 #include <linux/skbuff.h> 23 #include <linux/workqueue.h> 24 #include <linux/types.h> 25 #include <linux/spinlock.h> 26 #include <linux/etherdevice.h> 27 #include <linux/leds.h> 28 #include <linux/idr.h> 29 #include <linux/rhashtable.h> 30 #include <net/ieee80211_radiotap.h> 31 #include <net/cfg80211.h> 32 #include <net/mac80211.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 37 extern const struct cfg80211_ops mac80211_config_ops; 38 39 struct ieee80211_local; 40 41 /* Maximum number of broadcast/multicast frames to buffer when some of the 42 * associated stations are using power saving. */ 43 #define AP_MAX_BC_BUFFER 128 44 45 /* Maximum number of frames buffered to all STAs, including multicast frames. 46 * Note: increasing this limit increases the potential memory requirement. Each 47 * frame can be up to about 2 kB long. */ 48 #define TOTAL_MAX_TX_BUFFER 512 49 50 /* Required encryption head and tailroom */ 51 #define IEEE80211_ENCRYPT_HEADROOM 8 52 #define IEEE80211_ENCRYPT_TAILROOM 18 53 54 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 55 * reception of at least three fragmented frames. This limit can be increased 56 * by changing this define, at the cost of slower frame reassembly and 57 * increased memory use (about 2 kB of RAM per entry). */ 58 #define IEEE80211_FRAGMENT_MAX 4 59 60 /* power level hasn't been configured (or set to automatic) */ 61 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 62 63 /* 64 * Some APs experience problems when working with U-APSD. Decreasing the 65 * probability of that happening by using legacy mode for all ACs but VO isn't 66 * enough. 67 * 68 * Cisco 4410N originally forced us to enable VO by default only because it 69 * treated non-VO ACs as legacy. 70 * 71 * However some APs (notably Netgear R7000) silently reclassify packets to 72 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 73 * clients would never see some frames (e.g. ARP responses) or would fetch them 74 * accidentally after a long time. 75 * 76 * It makes little sense to enable u-APSD queues by default because it needs 77 * userspace applications to be aware of it to actually take advantage of the 78 * possible additional powersavings. Implicitly depending on driver autotrigger 79 * frame support doesn't make much sense. 80 */ 81 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 82 83 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 84 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 85 86 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 87 88 struct ieee80211_fragment_entry { 89 struct sk_buff_head skb_list; 90 unsigned long first_frag_time; 91 u16 seq; 92 u16 extra_len; 93 u16 last_frag; 94 u8 rx_queue; 95 bool check_sequential_pn; /* needed for CCMP/GCMP */ 96 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 97 }; 98 99 100 struct ieee80211_bss { 101 u32 device_ts_beacon, device_ts_presp; 102 103 bool wmm_used; 104 bool uapsd_supported; 105 106 #define IEEE80211_MAX_SUPP_RATES 32 107 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 108 size_t supp_rates_len; 109 struct ieee80211_rate *beacon_rate; 110 111 /* 112 * During association, we save an ERP value from a probe response so 113 * that we can feed ERP info to the driver when handling the 114 * association completes. these fields probably won't be up-to-date 115 * otherwise, you probably don't want to use them. 116 */ 117 bool has_erp_value; 118 u8 erp_value; 119 120 /* Keep track of the corruption of the last beacon/probe response. */ 121 u8 corrupt_data; 122 123 /* Keep track of what bits of information we have valid info for. */ 124 u8 valid_data; 125 }; 126 127 /** 128 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 129 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 130 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 131 * 132 * These are bss flags that are attached to a bss in the 133 * @corrupt_data field of &struct ieee80211_bss. 134 */ 135 enum ieee80211_bss_corrupt_data_flags { 136 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 137 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 138 }; 139 140 /** 141 * enum ieee80211_valid_data_flags - BSS valid data flags 142 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 143 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 144 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 145 * 146 * These are bss flags that are attached to a bss in the 147 * @valid_data field of &struct ieee80211_bss. They show which parts 148 * of the data structure were received as a result of an un-corrupted 149 * beacon/probe response. 150 */ 151 enum ieee80211_bss_valid_data_flags { 152 IEEE80211_BSS_VALID_WMM = BIT(1), 153 IEEE80211_BSS_VALID_RATES = BIT(2), 154 IEEE80211_BSS_VALID_ERP = BIT(3) 155 }; 156 157 typedef unsigned __bitwise__ ieee80211_tx_result; 158 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 159 #define TX_DROP ((__force ieee80211_tx_result) 1u) 160 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 161 162 #define IEEE80211_TX_UNICAST BIT(1) 163 #define IEEE80211_TX_PS_BUFFERED BIT(2) 164 165 struct ieee80211_tx_data { 166 struct sk_buff *skb; 167 struct sk_buff_head skbs; 168 struct ieee80211_local *local; 169 struct ieee80211_sub_if_data *sdata; 170 struct sta_info *sta; 171 struct ieee80211_key *key; 172 struct ieee80211_tx_rate rate; 173 174 unsigned int flags; 175 }; 176 177 178 typedef unsigned __bitwise__ ieee80211_rx_result; 179 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 180 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 181 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 182 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 183 184 /** 185 * enum ieee80211_packet_rx_flags - packet RX flags 186 * @IEEE80211_RX_AMSDU: a-MSDU packet 187 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 188 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 189 * 190 * These are per-frame flags that are attached to a frame in the 191 * @rx_flags field of &struct ieee80211_rx_status. 192 */ 193 enum ieee80211_packet_rx_flags { 194 IEEE80211_RX_AMSDU = BIT(3), 195 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 196 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 197 }; 198 199 /** 200 * enum ieee80211_rx_flags - RX data flags 201 * 202 * @IEEE80211_RX_CMNTR: received on cooked monitor already 203 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 204 * to cfg80211_report_obss_beacon(). 205 * 206 * These flags are used across handling multiple interfaces 207 * for a single frame. 208 */ 209 enum ieee80211_rx_flags { 210 IEEE80211_RX_CMNTR = BIT(0), 211 IEEE80211_RX_BEACON_REPORTED = BIT(1), 212 }; 213 214 struct ieee80211_rx_data { 215 struct napi_struct *napi; 216 struct sk_buff *skb; 217 struct ieee80211_local *local; 218 struct ieee80211_sub_if_data *sdata; 219 struct sta_info *sta; 220 struct ieee80211_key *key; 221 222 unsigned int flags; 223 224 /* 225 * Index into sequence numbers array, 0..16 226 * since the last (16) is used for non-QoS, 227 * will be 16 on non-QoS frames. 228 */ 229 int seqno_idx; 230 231 /* 232 * Index into the security IV/PN arrays, 0..16 233 * since the last (16) is used for CCMP-encrypted 234 * management frames, will be set to 16 on mgmt 235 * frames and 0 on non-QoS frames. 236 */ 237 int security_idx; 238 239 u32 tkip_iv32; 240 u16 tkip_iv16; 241 }; 242 243 struct ieee80211_csa_settings { 244 const u16 *counter_offsets_beacon; 245 const u16 *counter_offsets_presp; 246 247 int n_counter_offsets_beacon; 248 int n_counter_offsets_presp; 249 250 u8 count; 251 }; 252 253 struct beacon_data { 254 u8 *head, *tail; 255 int head_len, tail_len; 256 struct ieee80211_meshconf_ie *meshconf; 257 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 258 u8 csa_current_counter; 259 struct rcu_head rcu_head; 260 }; 261 262 struct probe_resp { 263 struct rcu_head rcu_head; 264 int len; 265 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 266 u8 data[0]; 267 }; 268 269 struct ps_data { 270 /* yes, this looks ugly, but guarantees that we can later use 271 * bitmap_empty :) 272 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 273 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 274 __aligned(__alignof__(unsigned long)); 275 struct sk_buff_head bc_buf; 276 atomic_t num_sta_ps; /* number of stations in PS mode */ 277 int dtim_count; 278 bool dtim_bc_mc; 279 }; 280 281 struct ieee80211_if_ap { 282 struct beacon_data __rcu *beacon; 283 struct probe_resp __rcu *probe_resp; 284 285 /* to be used after channel switch. */ 286 struct cfg80211_beacon_data *next_beacon; 287 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 288 289 struct ps_data ps; 290 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 291 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 292 driver_smps_mode; /* smps mode request */ 293 294 struct work_struct request_smps_work; 295 }; 296 297 struct ieee80211_if_wds { 298 struct sta_info *sta; 299 u8 remote_addr[ETH_ALEN]; 300 }; 301 302 struct ieee80211_if_vlan { 303 struct list_head list; /* write-protected with RTNL and local->mtx */ 304 305 /* used for all tx if the VLAN is configured to 4-addr mode */ 306 struct sta_info __rcu *sta; 307 }; 308 309 struct mesh_stats { 310 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 311 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 312 __u32 fwded_frames; /* Mesh total forwarded frames */ 313 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 314 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 315 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 316 }; 317 318 #define PREQ_Q_F_START 0x1 319 #define PREQ_Q_F_REFRESH 0x2 320 struct mesh_preq_queue { 321 struct list_head list; 322 u8 dst[ETH_ALEN]; 323 u8 flags; 324 }; 325 326 struct ieee80211_roc_work { 327 struct list_head list; 328 329 struct ieee80211_sub_if_data *sdata; 330 331 struct ieee80211_channel *chan; 332 333 bool started, abort, hw_begun, notified; 334 bool on_channel; 335 336 unsigned long start_time; 337 338 u32 duration, req_duration; 339 struct sk_buff *frame; 340 u64 cookie, mgmt_tx_cookie; 341 enum ieee80211_roc_type type; 342 }; 343 344 /* flags used in struct ieee80211_if_managed.flags */ 345 enum ieee80211_sta_flags { 346 IEEE80211_STA_CONNECTION_POLL = BIT(1), 347 IEEE80211_STA_CONTROL_PORT = BIT(2), 348 IEEE80211_STA_DISABLE_HT = BIT(4), 349 IEEE80211_STA_MFP_ENABLED = BIT(6), 350 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 351 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 352 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 353 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 354 IEEE80211_STA_DISABLE_VHT = BIT(11), 355 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 356 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 357 IEEE80211_STA_DISABLE_WMM = BIT(14), 358 IEEE80211_STA_ENABLE_RRM = BIT(15), 359 }; 360 361 struct ieee80211_mgd_auth_data { 362 struct cfg80211_bss *bss; 363 unsigned long timeout; 364 int tries; 365 u16 algorithm, expected_transaction; 366 367 u8 key[WLAN_KEY_LEN_WEP104]; 368 u8 key_len, key_idx; 369 bool done; 370 bool timeout_started; 371 372 u16 sae_trans, sae_status; 373 size_t data_len; 374 u8 data[]; 375 }; 376 377 struct ieee80211_mgd_assoc_data { 378 struct cfg80211_bss *bss; 379 const u8 *supp_rates; 380 381 unsigned long timeout; 382 int tries; 383 384 u16 capability; 385 u8 prev_bssid[ETH_ALEN]; 386 u8 ssid[IEEE80211_MAX_SSID_LEN]; 387 u8 ssid_len; 388 u8 supp_rates_len; 389 bool wmm, uapsd; 390 bool need_beacon; 391 bool synced; 392 bool timeout_started; 393 394 u8 ap_ht_param; 395 396 struct ieee80211_vht_cap ap_vht_cap; 397 398 size_t ie_len; 399 u8 ie[]; 400 }; 401 402 struct ieee80211_sta_tx_tspec { 403 /* timestamp of the first packet in the time slice */ 404 unsigned long time_slice_start; 405 406 u32 admitted_time; /* in usecs, unlike over the air */ 407 u8 tsid; 408 s8 up; /* signed to be able to invalidate with -1 during teardown */ 409 410 /* consumed TX time in microseconds in the time slice */ 411 u32 consumed_tx_time; 412 enum { 413 TX_TSPEC_ACTION_NONE = 0, 414 TX_TSPEC_ACTION_DOWNGRADE, 415 TX_TSPEC_ACTION_STOP_DOWNGRADE, 416 } action; 417 bool downgraded; 418 }; 419 420 DECLARE_EWMA(beacon_signal, 16, 4) 421 422 struct ieee80211_if_managed { 423 struct timer_list timer; 424 struct timer_list conn_mon_timer; 425 struct timer_list bcn_mon_timer; 426 struct timer_list chswitch_timer; 427 struct work_struct monitor_work; 428 struct work_struct chswitch_work; 429 struct work_struct beacon_connection_loss_work; 430 struct work_struct csa_connection_drop_work; 431 432 unsigned long beacon_timeout; 433 unsigned long probe_timeout; 434 int probe_send_count; 435 bool nullfunc_failed; 436 bool connection_loss; 437 438 struct cfg80211_bss *associated; 439 struct ieee80211_mgd_auth_data *auth_data; 440 struct ieee80211_mgd_assoc_data *assoc_data; 441 442 u8 bssid[ETH_ALEN]; 443 444 u16 aid; 445 446 bool powersave; /* powersave requested for this iface */ 447 bool broken_ap; /* AP is broken -- turn off powersave */ 448 bool have_beacon; 449 u8 dtim_period; 450 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 451 driver_smps_mode; /* smps mode request */ 452 453 struct work_struct request_smps_work; 454 455 unsigned int flags; 456 457 bool csa_waiting_bcn; 458 bool csa_ignored_same_chan; 459 460 bool beacon_crc_valid; 461 u32 beacon_crc; 462 463 bool status_acked; 464 bool status_received; 465 __le16 status_fc; 466 467 enum { 468 IEEE80211_MFP_DISABLED, 469 IEEE80211_MFP_OPTIONAL, 470 IEEE80211_MFP_REQUIRED 471 } mfp; /* management frame protection */ 472 473 /* 474 * Bitmask of enabled u-apsd queues, 475 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 476 * to take effect. 477 */ 478 unsigned int uapsd_queues; 479 480 /* 481 * Maximum number of buffered frames AP can deliver during a 482 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 483 * Needs a new association to take effect. 484 */ 485 unsigned int uapsd_max_sp_len; 486 487 int wmm_last_param_set; 488 489 u8 use_4addr; 490 491 s16 p2p_noa_index; 492 493 struct ewma_beacon_signal ave_beacon_signal; 494 495 /* 496 * Number of Beacon frames used in ave_beacon_signal. This can be used 497 * to avoid generating less reliable cqm events that would be based 498 * only on couple of received frames. 499 */ 500 unsigned int count_beacon_signal; 501 502 /* Number of times beacon loss was invoked. */ 503 unsigned int beacon_loss_count; 504 505 /* 506 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 507 * that triggered a cqm event. 0 indicates that no event has been 508 * generated for the current association. 509 */ 510 int last_cqm_event_signal; 511 512 /* 513 * State variables for keeping track of RSSI of the AP currently 514 * connected to and informing driver when RSSI has gone 515 * below/above a certain threshold. 516 */ 517 int rssi_min_thold, rssi_max_thold; 518 int last_ave_beacon_signal; 519 520 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 521 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 522 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 523 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 524 525 /* TDLS support */ 526 u8 tdls_peer[ETH_ALEN] __aligned(2); 527 struct delayed_work tdls_peer_del_work; 528 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 529 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 530 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 531 bool tdls_chan_switch_prohibited; 532 bool tdls_wider_bw_prohibited; 533 534 /* WMM-AC TSPEC support */ 535 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 536 /* Use a separate work struct so that we can do something here 537 * while the sdata->work is flushing the queues, for example. 538 * otherwise, in scenarios where we hardly get any traffic out 539 * on the BE queue, but there's a lot of VO traffic, we might 540 * get stuck in a downgraded situation and flush takes forever. 541 */ 542 struct delayed_work tx_tspec_wk; 543 }; 544 545 struct ieee80211_if_ibss { 546 struct timer_list timer; 547 struct work_struct csa_connection_drop_work; 548 549 unsigned long last_scan_completed; 550 551 u32 basic_rates; 552 553 bool fixed_bssid; 554 bool fixed_channel; 555 bool privacy; 556 557 bool control_port; 558 bool userspace_handles_dfs; 559 560 u8 bssid[ETH_ALEN] __aligned(2); 561 u8 ssid[IEEE80211_MAX_SSID_LEN]; 562 u8 ssid_len, ie_len; 563 u8 *ie; 564 struct cfg80211_chan_def chandef; 565 566 unsigned long ibss_join_req; 567 /* probe response/beacon for IBSS */ 568 struct beacon_data __rcu *presp; 569 570 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 571 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 572 573 spinlock_t incomplete_lock; 574 struct list_head incomplete_stations; 575 576 enum { 577 IEEE80211_IBSS_MLME_SEARCH, 578 IEEE80211_IBSS_MLME_JOINED, 579 } state; 580 }; 581 582 /** 583 * struct ieee80211_if_ocb - OCB mode state 584 * 585 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 586 * @wrkq_flags: OCB deferred task action 587 * @incomplete_lock: delayed STA insertion lock 588 * @incomplete_stations: list of STAs waiting for delayed insertion 589 * @joined: indication if the interface is connected to an OCB network 590 */ 591 struct ieee80211_if_ocb { 592 struct timer_list housekeeping_timer; 593 unsigned long wrkq_flags; 594 595 spinlock_t incomplete_lock; 596 struct list_head incomplete_stations; 597 598 bool joined; 599 }; 600 601 /** 602 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 603 * 604 * these declarations define the interface, which enables 605 * vendor-specific mesh synchronization 606 * 607 */ 608 struct ieee802_11_elems; 609 struct ieee80211_mesh_sync_ops { 610 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 611 u16 stype, 612 struct ieee80211_mgmt *mgmt, 613 struct ieee802_11_elems *elems, 614 struct ieee80211_rx_status *rx_status); 615 616 /* should be called with beacon_data under RCU read lock */ 617 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 618 struct beacon_data *beacon); 619 /* add other framework functions here */ 620 }; 621 622 struct mesh_csa_settings { 623 struct rcu_head rcu_head; 624 struct cfg80211_csa_settings settings; 625 }; 626 627 struct ieee80211_if_mesh { 628 struct timer_list housekeeping_timer; 629 struct timer_list mesh_path_timer; 630 struct timer_list mesh_path_root_timer; 631 632 unsigned long wrkq_flags; 633 unsigned long mbss_changed; 634 635 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 636 size_t mesh_id_len; 637 /* Active Path Selection Protocol Identifier */ 638 u8 mesh_pp_id; 639 /* Active Path Selection Metric Identifier */ 640 u8 mesh_pm_id; 641 /* Congestion Control Mode Identifier */ 642 u8 mesh_cc_id; 643 /* Synchronization Protocol Identifier */ 644 u8 mesh_sp_id; 645 /* Authentication Protocol Identifier */ 646 u8 mesh_auth_id; 647 /* Local mesh Sequence Number */ 648 u32 sn; 649 /* Last used PREQ ID */ 650 u32 preq_id; 651 atomic_t mpaths; 652 /* Timestamp of last SN update */ 653 unsigned long last_sn_update; 654 /* Time when it's ok to send next PERR */ 655 unsigned long next_perr; 656 /* Timestamp of last PREQ sent */ 657 unsigned long last_preq; 658 struct mesh_rmc *rmc; 659 spinlock_t mesh_preq_queue_lock; 660 struct mesh_preq_queue preq_queue; 661 int preq_queue_len; 662 struct mesh_stats mshstats; 663 struct mesh_config mshcfg; 664 atomic_t estab_plinks; 665 u32 mesh_seqnum; 666 bool accepting_plinks; 667 int num_gates; 668 struct beacon_data __rcu *beacon; 669 const u8 *ie; 670 u8 ie_len; 671 enum { 672 IEEE80211_MESH_SEC_NONE = 0x0, 673 IEEE80211_MESH_SEC_AUTHED = 0x1, 674 IEEE80211_MESH_SEC_SECURED = 0x2, 675 } security; 676 bool user_mpm; 677 /* Extensible Synchronization Framework */ 678 const struct ieee80211_mesh_sync_ops *sync_ops; 679 s64 sync_offset_clockdrift_max; 680 spinlock_t sync_offset_lock; 681 bool adjusting_tbtt; 682 /* mesh power save */ 683 enum nl80211_mesh_power_mode nonpeer_pm; 684 int ps_peers_light_sleep; 685 int ps_peers_deep_sleep; 686 struct ps_data ps; 687 /* Channel Switching Support */ 688 struct mesh_csa_settings __rcu *csa; 689 enum { 690 IEEE80211_MESH_CSA_ROLE_NONE, 691 IEEE80211_MESH_CSA_ROLE_INIT, 692 IEEE80211_MESH_CSA_ROLE_REPEATER, 693 } csa_role; 694 u8 chsw_ttl; 695 u16 pre_value; 696 697 /* offset from skb->data while building IE */ 698 int meshconf_offset; 699 }; 700 701 #ifdef CONFIG_MAC80211_MESH 702 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 703 do { (msh)->mshstats.name++; } while (0) 704 #else 705 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 706 do { } while (0) 707 #endif 708 709 /** 710 * enum ieee80211_sub_if_data_flags - virtual interface flags 711 * 712 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 713 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 714 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 715 * associated stations and deliver multicast frames both 716 * back to wireless media and to the local net stack. 717 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 718 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 719 */ 720 enum ieee80211_sub_if_data_flags { 721 IEEE80211_SDATA_ALLMULTI = BIT(0), 722 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 723 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 724 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 725 IEEE80211_SDATA_IN_DRIVER = BIT(5), 726 }; 727 728 /** 729 * enum ieee80211_sdata_state_bits - virtual interface state bits 730 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 731 * mirrors netif_running() but is separate for interface type 732 * change handling while the interface is up 733 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 734 * mode, so queues are stopped 735 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 736 * to offchannel, reset when offchannel returns 737 */ 738 enum ieee80211_sdata_state_bits { 739 SDATA_STATE_RUNNING, 740 SDATA_STATE_OFFCHANNEL, 741 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 742 }; 743 744 /** 745 * enum ieee80211_chanctx_mode - channel context configuration mode 746 * 747 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 748 * multiple interfaces 749 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 750 * only by a single interface. This can be used for example for 751 * non-fixed channel IBSS. 752 */ 753 enum ieee80211_chanctx_mode { 754 IEEE80211_CHANCTX_SHARED, 755 IEEE80211_CHANCTX_EXCLUSIVE 756 }; 757 758 /** 759 * enum ieee80211_chanctx_replace_state - channel context replacement state 760 * 761 * This is used for channel context in-place reservations that require channel 762 * context switch/swap. 763 * 764 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 765 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 766 * by a (not yet registered) channel context pointed by %replace_ctx. 767 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 768 * replaces an existing channel context pointed to by %replace_ctx. 769 */ 770 enum ieee80211_chanctx_replace_state { 771 IEEE80211_CHANCTX_REPLACE_NONE, 772 IEEE80211_CHANCTX_WILL_BE_REPLACED, 773 IEEE80211_CHANCTX_REPLACES_OTHER, 774 }; 775 776 struct ieee80211_chanctx { 777 struct list_head list; 778 struct rcu_head rcu_head; 779 780 struct list_head assigned_vifs; 781 struct list_head reserved_vifs; 782 783 enum ieee80211_chanctx_replace_state replace_state; 784 struct ieee80211_chanctx *replace_ctx; 785 786 enum ieee80211_chanctx_mode mode; 787 bool driver_present; 788 789 struct ieee80211_chanctx_conf conf; 790 }; 791 792 struct mac80211_qos_map { 793 struct cfg80211_qos_map qos_map; 794 struct rcu_head rcu_head; 795 }; 796 797 enum txq_info_flags { 798 IEEE80211_TXQ_STOP, 799 IEEE80211_TXQ_AMPDU, 800 }; 801 802 struct txq_info { 803 struct sk_buff_head queue; 804 unsigned long flags; 805 unsigned long byte_cnt; 806 807 /* keep last! */ 808 struct ieee80211_txq txq; 809 }; 810 811 struct ieee80211_sub_if_data { 812 struct list_head list; 813 814 struct wireless_dev wdev; 815 816 /* keys */ 817 struct list_head key_list; 818 819 /* count for keys needing tailroom space allocation */ 820 int crypto_tx_tailroom_needed_cnt; 821 int crypto_tx_tailroom_pending_dec; 822 struct delayed_work dec_tailroom_needed_wk; 823 824 struct net_device *dev; 825 struct ieee80211_local *local; 826 827 unsigned int flags; 828 829 unsigned long state; 830 831 char name[IFNAMSIZ]; 832 833 /* Fragment table for host-based reassembly */ 834 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 835 unsigned int fragment_next; 836 837 /* TID bitmap for NoAck policy */ 838 u16 noack_map; 839 840 /* bit field of ACM bits (BIT(802.1D tag)) */ 841 u8 wmm_acm; 842 843 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 844 struct ieee80211_key __rcu *default_unicast_key; 845 struct ieee80211_key __rcu *default_multicast_key; 846 struct ieee80211_key __rcu *default_mgmt_key; 847 848 u16 sequence_number; 849 __be16 control_port_protocol; 850 bool control_port_no_encrypt; 851 int encrypt_headroom; 852 853 atomic_t txqs_len[IEEE80211_NUM_ACS]; 854 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 855 struct mac80211_qos_map __rcu *qos_map; 856 857 struct work_struct csa_finalize_work; 858 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 859 struct cfg80211_chan_def csa_chandef; 860 861 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 862 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 863 864 /* context reservation -- protected with chanctx_mtx */ 865 struct ieee80211_chanctx *reserved_chanctx; 866 struct cfg80211_chan_def reserved_chandef; 867 bool reserved_radar_required; 868 bool reserved_ready; 869 870 /* used to reconfigure hardware SM PS */ 871 struct work_struct recalc_smps; 872 873 struct work_struct work; 874 struct sk_buff_head skb_queue; 875 876 u8 needed_rx_chains; 877 enum ieee80211_smps_mode smps_mode; 878 879 int user_power_level; /* in dBm */ 880 int ap_power_level; /* in dBm */ 881 882 bool radar_required; 883 struct delayed_work dfs_cac_timer_work; 884 885 /* 886 * AP this belongs to: self in AP mode and 887 * corresponding AP in VLAN mode, NULL for 888 * all others (might be needed later in IBSS) 889 */ 890 struct ieee80211_if_ap *bss; 891 892 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 893 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 894 895 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 896 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 897 898 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS]; 899 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX]; 900 901 union { 902 struct ieee80211_if_ap ap; 903 struct ieee80211_if_wds wds; 904 struct ieee80211_if_vlan vlan; 905 struct ieee80211_if_managed mgd; 906 struct ieee80211_if_ibss ibss; 907 struct ieee80211_if_mesh mesh; 908 struct ieee80211_if_ocb ocb; 909 u32 mntr_flags; 910 } u; 911 912 #ifdef CONFIG_MAC80211_DEBUGFS 913 struct { 914 struct dentry *subdir_stations; 915 struct dentry *default_unicast_key; 916 struct dentry *default_multicast_key; 917 struct dentry *default_mgmt_key; 918 } debugfs; 919 #endif 920 921 /* must be last, dynamically sized area in this! */ 922 struct ieee80211_vif vif; 923 }; 924 925 static inline 926 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 927 { 928 return container_of(p, struct ieee80211_sub_if_data, vif); 929 } 930 931 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 932 __acquires(&sdata->wdev.mtx) 933 { 934 mutex_lock(&sdata->wdev.mtx); 935 __acquire(&sdata->wdev.mtx); 936 } 937 938 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 939 __releases(&sdata->wdev.mtx) 940 { 941 mutex_unlock(&sdata->wdev.mtx); 942 __release(&sdata->wdev.mtx); 943 } 944 945 #define sdata_dereference(p, sdata) \ 946 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 947 948 static inline void 949 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 950 { 951 lockdep_assert_held(&sdata->wdev.mtx); 952 } 953 954 static inline enum ieee80211_band 955 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 956 { 957 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 958 struct ieee80211_chanctx_conf *chanctx_conf; 959 960 rcu_read_lock(); 961 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 962 if (!WARN_ON(!chanctx_conf)) 963 band = chanctx_conf->def.chan->band; 964 rcu_read_unlock(); 965 966 return band; 967 } 968 969 static inline int 970 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 971 { 972 switch (chandef->width) { 973 case NL80211_CHAN_WIDTH_5: 974 return 2; 975 case NL80211_CHAN_WIDTH_10: 976 return 1; 977 default: 978 return 0; 979 } 980 } 981 982 static inline int 983 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 984 { 985 struct ieee80211_chanctx_conf *chanctx_conf; 986 int shift = 0; 987 988 rcu_read_lock(); 989 chanctx_conf = rcu_dereference(vif->chanctx_conf); 990 if (chanctx_conf) 991 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 992 rcu_read_unlock(); 993 994 return shift; 995 } 996 997 struct ieee80211_rx_agg { 998 u8 addr[ETH_ALEN]; 999 u16 tid; 1000 }; 1001 1002 enum sdata_queue_type { 1003 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1004 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1005 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1006 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1007 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1008 }; 1009 1010 enum { 1011 IEEE80211_RX_MSG = 1, 1012 IEEE80211_TX_STATUS_MSG = 2, 1013 }; 1014 1015 enum queue_stop_reason { 1016 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1017 IEEE80211_QUEUE_STOP_REASON_PS, 1018 IEEE80211_QUEUE_STOP_REASON_CSA, 1019 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1020 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1021 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1022 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1023 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1024 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1025 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1026 1027 IEEE80211_QUEUE_STOP_REASONS, 1028 }; 1029 1030 #ifdef CONFIG_MAC80211_LEDS 1031 struct tpt_led_trigger { 1032 char name[32]; 1033 const struct ieee80211_tpt_blink *blink_table; 1034 unsigned int blink_table_len; 1035 struct timer_list timer; 1036 unsigned long prev_traffic; 1037 unsigned long tx_bytes, rx_bytes; 1038 unsigned int active, want; 1039 bool running; 1040 }; 1041 #endif 1042 1043 /** 1044 * mac80211 scan flags - currently active scan mode 1045 * 1046 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1047 * well be on the operating channel 1048 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1049 * determine if we are on the operating channel or not 1050 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1051 * channel. This should not interrupt normal traffic. 1052 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1053 * that the scan completed. 1054 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1055 * a scan complete for an aborted scan. 1056 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1057 * cancelled. 1058 */ 1059 enum { 1060 SCAN_SW_SCANNING, 1061 SCAN_HW_SCANNING, 1062 SCAN_ONCHANNEL_SCANNING, 1063 SCAN_COMPLETED, 1064 SCAN_ABORTED, 1065 SCAN_HW_CANCELLED, 1066 }; 1067 1068 /** 1069 * enum mac80211_scan_state - scan state machine states 1070 * 1071 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1072 * determines if we should keep on scanning or switch back to the 1073 * operating channel 1074 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1075 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1076 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1077 * send out data 1078 * @SCAN_RESUME: Resume the scan and scan the next channel 1079 * @SCAN_ABORT: Abort the scan and go back to operating channel 1080 */ 1081 enum mac80211_scan_state { 1082 SCAN_DECISION, 1083 SCAN_SET_CHANNEL, 1084 SCAN_SEND_PROBE, 1085 SCAN_SUSPEND, 1086 SCAN_RESUME, 1087 SCAN_ABORT, 1088 }; 1089 1090 struct ieee80211_local { 1091 /* embed the driver visible part. 1092 * don't cast (use the static inlines below), but we keep 1093 * it first anyway so they become a no-op */ 1094 struct ieee80211_hw hw; 1095 1096 const struct ieee80211_ops *ops; 1097 1098 /* 1099 * private workqueue to mac80211. mac80211 makes this accessible 1100 * via ieee80211_queue_work() 1101 */ 1102 struct workqueue_struct *workqueue; 1103 1104 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1105 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1106 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1107 spinlock_t queue_stop_reason_lock; 1108 1109 int open_count; 1110 int monitors, cooked_mntrs; 1111 /* number of interfaces with corresponding FIF_ flags */ 1112 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1113 fif_probe_req; 1114 int probe_req_reg; 1115 unsigned int filter_flags; /* FIF_* */ 1116 1117 bool wiphy_ciphers_allocated; 1118 1119 bool use_chanctx; 1120 1121 /* protects the aggregated multicast list and filter calls */ 1122 spinlock_t filter_lock; 1123 1124 /* used for uploading changed mc list */ 1125 struct work_struct reconfig_filter; 1126 1127 /* aggregated multicast list */ 1128 struct netdev_hw_addr_list mc_list; 1129 1130 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1131 1132 /* 1133 * suspended is true if we finished all the suspend _and_ we have 1134 * not yet come up from resume. This is to be used by mac80211 1135 * to ensure driver sanity during suspend and mac80211's own 1136 * sanity. It can eventually be used for WoW as well. 1137 */ 1138 bool suspended; 1139 1140 /* 1141 * Resuming is true while suspended, but when we're reprogramming the 1142 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1143 * again even though some other parts of the stack are still suspended 1144 * and we still drop received frames to avoid waking the stack. 1145 */ 1146 bool resuming; 1147 1148 /* 1149 * quiescing is true during the suspend process _only_ to 1150 * ease timer cancelling etc. 1151 */ 1152 bool quiescing; 1153 1154 /* device is started */ 1155 bool started; 1156 1157 /* device is during a HW reconfig */ 1158 bool in_reconfig; 1159 1160 /* wowlan is enabled -- don't reconfig on resume */ 1161 bool wowlan; 1162 1163 struct work_struct radar_detected_work; 1164 1165 /* number of RX chains the hardware has */ 1166 u8 rx_chains; 1167 1168 int tx_headroom; /* required headroom for hardware/radiotap */ 1169 1170 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1171 * added to skb_queue will be processed, but frames in 1172 * skb_queue_unreliable may be dropped if the total length of these 1173 * queues increases over the limit. */ 1174 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1175 struct tasklet_struct tasklet; 1176 struct sk_buff_head skb_queue; 1177 struct sk_buff_head skb_queue_unreliable; 1178 1179 spinlock_t rx_path_lock; 1180 1181 /* Station data */ 1182 /* 1183 * The mutex only protects the list, hash table and 1184 * counter, reads are done with RCU. 1185 */ 1186 struct mutex sta_mtx; 1187 spinlock_t tim_lock; 1188 unsigned long num_sta; 1189 struct list_head sta_list; 1190 struct rhashtable sta_hash; 1191 struct timer_list sta_cleanup; 1192 int sta_generation; 1193 1194 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1195 struct tasklet_struct tx_pending_tasklet; 1196 1197 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1198 1199 /* number of interfaces with allmulti RX */ 1200 atomic_t iff_allmultis; 1201 1202 struct rate_control_ref *rate_ctrl; 1203 1204 struct crypto_cipher *wep_tx_tfm; 1205 struct crypto_cipher *wep_rx_tfm; 1206 u32 wep_iv; 1207 1208 /* see iface.c */ 1209 struct list_head interfaces; 1210 struct mutex iflist_mtx; 1211 1212 /* 1213 * Key mutex, protects sdata's key_list and sta_info's 1214 * key pointers (write access, they're RCU.) 1215 */ 1216 struct mutex key_mtx; 1217 1218 /* mutex for scan and work locking */ 1219 struct mutex mtx; 1220 1221 /* Scanning and BSS list */ 1222 unsigned long scanning; 1223 struct cfg80211_ssid scan_ssid; 1224 struct cfg80211_scan_request *int_scan_req; 1225 struct cfg80211_scan_request __rcu *scan_req; 1226 struct ieee80211_scan_request *hw_scan_req; 1227 struct cfg80211_chan_def scan_chandef; 1228 enum ieee80211_band hw_scan_band; 1229 int scan_channel_idx; 1230 int scan_ies_len; 1231 int hw_scan_ies_bufsize; 1232 1233 struct work_struct sched_scan_stopped_work; 1234 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1235 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1236 u8 scan_addr[ETH_ALEN]; 1237 1238 unsigned long leave_oper_channel_time; 1239 enum mac80211_scan_state next_scan_state; 1240 struct delayed_work scan_work; 1241 struct ieee80211_sub_if_data __rcu *scan_sdata; 1242 /* For backward compatibility only -- do not use */ 1243 struct cfg80211_chan_def _oper_chandef; 1244 1245 /* Temporary remain-on-channel for off-channel operations */ 1246 struct ieee80211_channel *tmp_channel; 1247 1248 /* channel contexts */ 1249 struct list_head chanctx_list; 1250 struct mutex chanctx_mtx; 1251 1252 #ifdef CONFIG_MAC80211_LEDS 1253 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1254 struct led_trigger tpt_led; 1255 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1256 atomic_t radio_led_active, tpt_led_active; 1257 struct tpt_led_trigger *tpt_led_trigger; 1258 #endif 1259 1260 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1261 /* SNMP counters */ 1262 /* dot11CountersTable */ 1263 u32 dot11TransmittedFragmentCount; 1264 u32 dot11MulticastTransmittedFrameCount; 1265 u32 dot11FailedCount; 1266 u32 dot11RetryCount; 1267 u32 dot11MultipleRetryCount; 1268 u32 dot11FrameDuplicateCount; 1269 u32 dot11ReceivedFragmentCount; 1270 u32 dot11MulticastReceivedFrameCount; 1271 u32 dot11TransmittedFrameCount; 1272 1273 /* TX/RX handler statistics */ 1274 unsigned int tx_handlers_drop; 1275 unsigned int tx_handlers_queued; 1276 unsigned int tx_handlers_drop_wep; 1277 unsigned int tx_handlers_drop_not_assoc; 1278 unsigned int tx_handlers_drop_unauth_port; 1279 unsigned int rx_handlers_drop; 1280 unsigned int rx_handlers_queued; 1281 unsigned int rx_handlers_drop_nullfunc; 1282 unsigned int rx_handlers_drop_defrag; 1283 unsigned int tx_expand_skb_head; 1284 unsigned int tx_expand_skb_head_cloned; 1285 unsigned int rx_expand_skb_head_defrag; 1286 unsigned int rx_handlers_fragments; 1287 unsigned int tx_status_drop; 1288 #define I802_DEBUG_INC(c) (c)++ 1289 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1290 #define I802_DEBUG_INC(c) do { } while (0) 1291 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1292 1293 1294 int total_ps_buffered; /* total number of all buffered unicast and 1295 * multicast packets for power saving stations 1296 */ 1297 1298 bool pspolling; 1299 bool offchannel_ps_enabled; 1300 /* 1301 * PS can only be enabled when we have exactly one managed 1302 * interface (and monitors) in PS, this then points there. 1303 */ 1304 struct ieee80211_sub_if_data *ps_sdata; 1305 struct work_struct dynamic_ps_enable_work; 1306 struct work_struct dynamic_ps_disable_work; 1307 struct timer_list dynamic_ps_timer; 1308 struct notifier_block ifa_notifier; 1309 struct notifier_block ifa6_notifier; 1310 1311 /* 1312 * The dynamic ps timeout configured from user space via WEXT - 1313 * this will override whatever chosen by mac80211 internally. 1314 */ 1315 int dynamic_ps_forced_timeout; 1316 1317 int user_power_level; /* in dBm, for all interfaces */ 1318 1319 enum ieee80211_smps_mode smps_mode; 1320 1321 struct work_struct restart_work; 1322 1323 #ifdef CONFIG_MAC80211_DEBUGFS 1324 struct local_debugfsdentries { 1325 struct dentry *rcdir; 1326 struct dentry *keys; 1327 } debugfs; 1328 #endif 1329 1330 /* 1331 * Remain-on-channel support 1332 */ 1333 struct delayed_work roc_work; 1334 struct list_head roc_list; 1335 struct work_struct hw_roc_start, hw_roc_done; 1336 unsigned long hw_roc_start_time; 1337 u64 roc_cookie_counter; 1338 1339 struct idr ack_status_frames; 1340 spinlock_t ack_status_lock; 1341 1342 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1343 1344 /* virtual monitor interface */ 1345 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1346 struct cfg80211_chan_def monitor_chandef; 1347 1348 /* extended capabilities provided by mac80211 */ 1349 u8 ext_capa[8]; 1350 1351 /* TDLS channel switch */ 1352 struct work_struct tdls_chsw_work; 1353 struct sk_buff_head skb_queue_tdls_chsw; 1354 }; 1355 1356 static inline struct ieee80211_sub_if_data * 1357 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1358 { 1359 return netdev_priv(dev); 1360 } 1361 1362 static inline struct ieee80211_sub_if_data * 1363 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1364 { 1365 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1366 } 1367 1368 /* this struct represents 802.11n's RA/TID combination */ 1369 struct ieee80211_ra_tid { 1370 u8 ra[ETH_ALEN]; 1371 u16 tid; 1372 }; 1373 1374 /* this struct holds the value parsing from channel switch IE */ 1375 struct ieee80211_csa_ie { 1376 struct cfg80211_chan_def chandef; 1377 u8 mode; 1378 u8 count; 1379 u8 ttl; 1380 u16 pre_value; 1381 }; 1382 1383 /* Parsed Information Elements */ 1384 struct ieee802_11_elems { 1385 const u8 *ie_start; 1386 size_t total_len; 1387 1388 /* pointers to IEs */ 1389 const struct ieee80211_tdls_lnkie *lnk_id; 1390 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1391 const u8 *ext_capab; 1392 const u8 *ssid; 1393 const u8 *supp_rates; 1394 const u8 *ds_params; 1395 const struct ieee80211_tim_ie *tim; 1396 const u8 *challenge; 1397 const u8 *rsn; 1398 const u8 *erp_info; 1399 const u8 *ext_supp_rates; 1400 const u8 *wmm_info; 1401 const u8 *wmm_param; 1402 const struct ieee80211_ht_cap *ht_cap_elem; 1403 const struct ieee80211_ht_operation *ht_operation; 1404 const struct ieee80211_vht_cap *vht_cap_elem; 1405 const struct ieee80211_vht_operation *vht_operation; 1406 const struct ieee80211_meshconf_ie *mesh_config; 1407 const u8 *mesh_id; 1408 const u8 *peering; 1409 const __le16 *awake_window; 1410 const u8 *preq; 1411 const u8 *prep; 1412 const u8 *perr; 1413 const struct ieee80211_rann_ie *rann; 1414 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1415 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1416 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1417 const u8 *country_elem; 1418 const u8 *pwr_constr_elem; 1419 const u8 *cisco_dtpc_elem; 1420 const struct ieee80211_timeout_interval_ie *timeout_int; 1421 const u8 *opmode_notif; 1422 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1423 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1424 1425 /* length of them, respectively */ 1426 u8 ext_capab_len; 1427 u8 ssid_len; 1428 u8 supp_rates_len; 1429 u8 tim_len; 1430 u8 challenge_len; 1431 u8 rsn_len; 1432 u8 ext_supp_rates_len; 1433 u8 wmm_info_len; 1434 u8 wmm_param_len; 1435 u8 mesh_id_len; 1436 u8 peering_len; 1437 u8 preq_len; 1438 u8 prep_len; 1439 u8 perr_len; 1440 u8 country_elem_len; 1441 1442 /* whether a parse error occurred while retrieving these elements */ 1443 bool parse_error; 1444 }; 1445 1446 static inline struct ieee80211_local *hw_to_local( 1447 struct ieee80211_hw *hw) 1448 { 1449 return container_of(hw, struct ieee80211_local, hw); 1450 } 1451 1452 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1453 { 1454 return container_of(txq, struct txq_info, txq); 1455 } 1456 1457 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1458 { 1459 return ether_addr_equal(raddr, addr) || 1460 is_broadcast_ether_addr(raddr); 1461 } 1462 1463 static inline bool 1464 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1465 { 1466 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1467 status->flag & RX_FLAG_MACTIME_END); 1468 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1469 return true; 1470 /* can't handle HT/VHT preamble yet */ 1471 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1472 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT))) 1473 return true; 1474 return false; 1475 } 1476 1477 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1478 struct ieee80211_rx_status *status, 1479 unsigned int mpdu_len, 1480 unsigned int mpdu_offset); 1481 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1482 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1483 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1484 u32 changed); 1485 void ieee80211_configure_filter(struct ieee80211_local *local); 1486 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1487 1488 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1489 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1490 u64 *cookie, gfp_t gfp); 1491 1492 /* STA code */ 1493 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1494 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1495 struct cfg80211_auth_request *req); 1496 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1497 struct cfg80211_assoc_request *req); 1498 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1499 struct cfg80211_deauth_request *req); 1500 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1501 struct cfg80211_disassoc_request *req); 1502 void ieee80211_send_pspoll(struct ieee80211_local *local, 1503 struct ieee80211_sub_if_data *sdata); 1504 void ieee80211_recalc_ps(struct ieee80211_local *local); 1505 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1506 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1507 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1508 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1509 struct sk_buff *skb); 1510 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1511 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1512 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1513 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1514 __le16 fc, bool acked); 1515 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1516 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1517 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1518 1519 /* IBSS code */ 1520 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1521 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1522 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1523 const u8 *bssid, const u8 *addr, u32 supp_rates); 1524 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1525 struct cfg80211_ibss_params *params); 1526 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1527 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1528 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1529 struct sk_buff *skb); 1530 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1531 struct cfg80211_csa_settings *csa_settings); 1532 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1533 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1534 1535 /* OCB code */ 1536 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1537 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1538 const u8 *bssid, const u8 *addr, u32 supp_rates); 1539 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1540 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1541 struct ocb_setup *setup); 1542 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1543 1544 /* mesh code */ 1545 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1546 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1547 struct sk_buff *skb); 1548 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1549 struct cfg80211_csa_settings *csa_settings); 1550 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1551 1552 /* scan/BSS handling */ 1553 void ieee80211_scan_work(struct work_struct *work); 1554 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1555 const u8 *ssid, u8 ssid_len, 1556 struct ieee80211_channel **channels, 1557 unsigned int n_channels, 1558 enum nl80211_bss_scan_width scan_width); 1559 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1560 struct cfg80211_scan_request *req); 1561 void ieee80211_scan_cancel(struct ieee80211_local *local); 1562 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1563 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1564 1565 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1566 struct ieee80211_bss * 1567 ieee80211_bss_info_update(struct ieee80211_local *local, 1568 struct ieee80211_rx_status *rx_status, 1569 struct ieee80211_mgmt *mgmt, 1570 size_t len, 1571 struct ieee802_11_elems *elems, 1572 struct ieee80211_channel *channel); 1573 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1574 struct ieee80211_bss *bss); 1575 1576 /* scheduled scan handling */ 1577 int 1578 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1579 struct cfg80211_sched_scan_request *req); 1580 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1581 struct cfg80211_sched_scan_request *req); 1582 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1583 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1584 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1585 1586 /* off-channel/mgmt-tx */ 1587 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1588 void ieee80211_offchannel_return(struct ieee80211_local *local); 1589 void ieee80211_roc_setup(struct ieee80211_local *local); 1590 void ieee80211_start_next_roc(struct ieee80211_local *local); 1591 void ieee80211_roc_purge(struct ieee80211_local *local, 1592 struct ieee80211_sub_if_data *sdata); 1593 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1594 struct ieee80211_channel *chan, 1595 unsigned int duration, u64 *cookie); 1596 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1597 struct wireless_dev *wdev, u64 cookie); 1598 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1599 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1600 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1601 struct wireless_dev *wdev, u64 cookie); 1602 1603 /* channel switch handling */ 1604 void ieee80211_csa_finalize_work(struct work_struct *work); 1605 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1606 struct cfg80211_csa_settings *params); 1607 1608 /* interface handling */ 1609 int ieee80211_iface_init(void); 1610 void ieee80211_iface_exit(void); 1611 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1612 unsigned char name_assign_type, 1613 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1614 struct vif_params *params); 1615 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1616 enum nl80211_iftype type); 1617 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1618 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1619 u32 ieee80211_idle_off(struct ieee80211_local *local); 1620 void ieee80211_recalc_idle(struct ieee80211_local *local); 1621 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1622 const int offset); 1623 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1624 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1625 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1626 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1627 1628 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1629 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1630 bool update_bss); 1631 1632 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1633 { 1634 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1635 } 1636 1637 /* tx handling */ 1638 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1639 void ieee80211_tx_pending(unsigned long data); 1640 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1641 struct net_device *dev); 1642 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1643 struct net_device *dev); 1644 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1645 struct net_device *dev, 1646 u32 info_flags); 1647 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1648 struct sk_buff_head *skbs); 1649 struct sk_buff * 1650 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1651 struct sk_buff *skb, u32 info_flags); 1652 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1653 struct ieee80211_supported_band *sband, 1654 int retry_count, int shift, bool send_to_cooked); 1655 1656 void ieee80211_check_fast_xmit(struct sta_info *sta); 1657 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1658 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1659 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1660 1661 /* HT */ 1662 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1663 struct ieee80211_sta_ht_cap *ht_cap); 1664 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1665 struct ieee80211_supported_band *sband, 1666 const struct ieee80211_ht_cap *ht_cap_ie, 1667 struct sta_info *sta); 1668 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1669 const u8 *da, u16 tid, 1670 u16 initiator, u16 reason_code); 1671 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1672 enum ieee80211_smps_mode smps, const u8 *da, 1673 const u8 *bssid); 1674 void ieee80211_request_smps_ap_work(struct work_struct *work); 1675 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1676 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1677 enum ieee80211_smps_mode smps_mode_new); 1678 1679 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1680 u16 initiator, u16 reason, bool stop); 1681 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1682 u16 initiator, u16 reason, bool stop); 1683 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1684 u8 dialog_token, u16 timeout, 1685 u16 start_seq_num, u16 ba_policy, u16 tid, 1686 u16 buf_size, bool tx, bool auto_seq); 1687 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1688 enum ieee80211_agg_stop_reason reason); 1689 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1690 struct sta_info *sta, 1691 struct ieee80211_mgmt *mgmt, size_t len); 1692 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1693 struct sta_info *sta, 1694 struct ieee80211_mgmt *mgmt, 1695 size_t len); 1696 void ieee80211_process_addba_request(struct ieee80211_local *local, 1697 struct sta_info *sta, 1698 struct ieee80211_mgmt *mgmt, 1699 size_t len); 1700 1701 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1702 enum ieee80211_agg_stop_reason reason); 1703 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1704 enum ieee80211_agg_stop_reason reason); 1705 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1706 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1707 void ieee80211_ba_session_work(struct work_struct *work); 1708 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1709 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1710 1711 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1712 1713 /* VHT */ 1714 void 1715 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1716 struct ieee80211_supported_band *sband, 1717 const struct ieee80211_vht_cap *vht_cap_ie, 1718 struct sta_info *sta); 1719 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1720 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1721 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1722 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1723 struct ieee80211_mgmt *mgmt); 1724 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1725 struct sta_info *sta, u8 opmode, 1726 enum ieee80211_band band); 1727 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1728 struct sta_info *sta, u8 opmode, 1729 enum ieee80211_band band); 1730 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1731 struct ieee80211_sta_vht_cap *vht_cap); 1732 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1733 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1734 1735 /* Spectrum management */ 1736 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1737 struct ieee80211_mgmt *mgmt, 1738 size_t len); 1739 /** 1740 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1741 * @sdata: the sdata of the interface which has received the frame 1742 * @elems: parsed 802.11 elements received with the frame 1743 * @current_band: indicates the current band 1744 * @sta_flags: contains information about own capabilities and restrictions 1745 * to decide which channel switch announcements can be accepted. Only the 1746 * following subset of &enum ieee80211_sta_flags are evaluated: 1747 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1748 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1749 * %IEEE80211_STA_DISABLE_160MHZ. 1750 * @bssid: the currently connected bssid (for reporting) 1751 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1752 All of them will be filled with if success only. 1753 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1754 */ 1755 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1756 struct ieee802_11_elems *elems, 1757 enum ieee80211_band current_band, 1758 u32 sta_flags, u8 *bssid, 1759 struct ieee80211_csa_ie *csa_ie); 1760 1761 /* Suspend/resume and hw reconfiguration */ 1762 int ieee80211_reconfig(struct ieee80211_local *local); 1763 void ieee80211_stop_device(struct ieee80211_local *local); 1764 1765 int __ieee80211_suspend(struct ieee80211_hw *hw, 1766 struct cfg80211_wowlan *wowlan); 1767 1768 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1769 { 1770 struct ieee80211_local *local = hw_to_local(hw); 1771 1772 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1773 !test_bit(SCAN_COMPLETED, &local->scanning), 1774 "%s: resume with hardware scan still in progress\n", 1775 wiphy_name(hw->wiphy)); 1776 1777 return ieee80211_reconfig(hw_to_local(hw)); 1778 } 1779 1780 /* utility functions/constants */ 1781 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1782 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1783 int rate, int erp, int short_preamble, 1784 int shift); 1785 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1786 bool bss_notify, bool enable_qos); 1787 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1788 struct sta_info *sta, struct sk_buff *skb); 1789 1790 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1791 struct sk_buff *skb, int tid, 1792 enum ieee80211_band band); 1793 1794 static inline void 1795 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1796 struct sk_buff *skb, int tid, 1797 enum ieee80211_band band) 1798 { 1799 rcu_read_lock(); 1800 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1801 rcu_read_unlock(); 1802 } 1803 1804 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1805 struct sk_buff *skb, int tid) 1806 { 1807 struct ieee80211_chanctx_conf *chanctx_conf; 1808 1809 rcu_read_lock(); 1810 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1811 if (WARN_ON(!chanctx_conf)) { 1812 rcu_read_unlock(); 1813 kfree_skb(skb); 1814 return; 1815 } 1816 1817 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1818 chanctx_conf->def.chan->band); 1819 rcu_read_unlock(); 1820 } 1821 1822 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1823 struct sk_buff *skb) 1824 { 1825 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1826 ieee80211_tx_skb_tid(sdata, skb, 7); 1827 } 1828 1829 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1830 struct ieee802_11_elems *elems, 1831 u64 filter, u32 crc); 1832 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1833 bool action, 1834 struct ieee802_11_elems *elems) 1835 { 1836 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1837 } 1838 1839 1840 extern const int ieee802_1d_to_ac[8]; 1841 1842 static inline int ieee80211_ac_from_tid(int tid) 1843 { 1844 return ieee802_1d_to_ac[tid & 7]; 1845 } 1846 1847 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1848 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1849 void ieee80211_dynamic_ps_timer(unsigned long data); 1850 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1851 struct ieee80211_sub_if_data *sdata, 1852 bool powersave); 1853 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1854 struct ieee80211_hdr *hdr); 1855 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1856 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1857 1858 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1859 unsigned long queues, 1860 enum queue_stop_reason reason, 1861 bool refcounted); 1862 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1863 struct ieee80211_sub_if_data *sdata, 1864 enum queue_stop_reason reason); 1865 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1866 struct ieee80211_sub_if_data *sdata, 1867 enum queue_stop_reason reason); 1868 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1869 unsigned long queues, 1870 enum queue_stop_reason reason, 1871 bool refcounted); 1872 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1873 enum queue_stop_reason reason, 1874 bool refcounted); 1875 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1876 enum queue_stop_reason reason, 1877 bool refcounted); 1878 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1879 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1880 struct sk_buff *skb); 1881 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1882 struct sk_buff_head *skbs); 1883 void ieee80211_flush_queues(struct ieee80211_local *local, 1884 struct ieee80211_sub_if_data *sdata, bool drop); 1885 void __ieee80211_flush_queues(struct ieee80211_local *local, 1886 struct ieee80211_sub_if_data *sdata, 1887 unsigned int queues, bool drop); 1888 1889 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1890 { 1891 /* 1892 * If quiescing is set, we are racing with __ieee80211_suspend. 1893 * __ieee80211_suspend flushes the workers after setting quiescing, 1894 * and we check quiescing / suspended before enqueing new workers. 1895 * We should abort the worker to avoid the races below. 1896 */ 1897 if (local->quiescing) 1898 return false; 1899 1900 /* 1901 * We might already be suspended if the following scenario occurs: 1902 * __ieee80211_suspend Control path 1903 * 1904 * if (local->quiescing) 1905 * return; 1906 * local->quiescing = true; 1907 * flush_workqueue(); 1908 * queue_work(...); 1909 * local->suspended = true; 1910 * local->quiescing = false; 1911 * worker starts running... 1912 */ 1913 if (local->suspended) 1914 return false; 1915 1916 return true; 1917 } 1918 1919 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1920 struct sta_info *sta, 1921 struct txq_info *txq, int tid); 1922 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1923 u16 transaction, u16 auth_alg, u16 status, 1924 const u8 *extra, size_t extra_len, const u8 *bssid, 1925 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1926 u32 tx_flags); 1927 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1928 const u8 *bssid, u16 stype, u16 reason, 1929 bool send_frame, u8 *frame_buf); 1930 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1931 size_t buffer_len, 1932 struct ieee80211_scan_ies *ie_desc, 1933 const u8 *ie, size_t ie_len, 1934 u8 bands_used, u32 *rate_masks, 1935 struct cfg80211_chan_def *chandef); 1936 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1937 const u8 *src, const u8 *dst, 1938 u32 ratemask, 1939 struct ieee80211_channel *chan, 1940 const u8 *ssid, size_t ssid_len, 1941 const u8 *ie, size_t ie_len, 1942 bool directed); 1943 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1944 const u8 *src, const u8 *dst, 1945 const u8 *ssid, size_t ssid_len, 1946 const u8 *ie, size_t ie_len, 1947 u32 ratemask, bool directed, u32 tx_flags, 1948 struct ieee80211_channel *channel, bool scan); 1949 1950 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1951 struct ieee802_11_elems *elems, 1952 enum ieee80211_band band, u32 *basic_rates); 1953 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1954 enum ieee80211_smps_mode smps_mode); 1955 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1956 enum ieee80211_smps_mode smps_mode); 1957 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1958 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1959 1960 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1961 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1962 u16 cap); 1963 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1964 const struct cfg80211_chan_def *chandef, 1965 u16 prot_mode, bool rifs_mode); 1966 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1967 u32 cap); 1968 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1969 const struct cfg80211_chan_def *chandef); 1970 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1971 const struct ieee80211_supported_band *sband, 1972 const u8 *srates, int srates_len, u32 *rates); 1973 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1974 struct sk_buff *skb, bool need_basic, 1975 enum ieee80211_band band); 1976 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1977 struct sk_buff *skb, bool need_basic, 1978 enum ieee80211_band band); 1979 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1980 1981 /* channel management */ 1982 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 1983 struct cfg80211_chan_def *chandef); 1984 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper, 1985 struct cfg80211_chan_def *chandef); 1986 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1987 1988 int __must_check 1989 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1990 const struct cfg80211_chan_def *chandef, 1991 enum ieee80211_chanctx_mode mode); 1992 int __must_check 1993 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1994 const struct cfg80211_chan_def *chandef, 1995 enum ieee80211_chanctx_mode mode, 1996 bool radar_required); 1997 int __must_check 1998 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 1999 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2000 2001 int __must_check 2002 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2003 const struct cfg80211_chan_def *chandef, 2004 u32 *changed); 2005 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2006 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2007 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2008 bool clear); 2009 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2010 struct ieee80211_chanctx *ctx); 2011 2012 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2013 struct ieee80211_chanctx *chanctx); 2014 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2015 struct ieee80211_chanctx *ctx); 2016 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2017 2018 void ieee80211_dfs_cac_timer(unsigned long data); 2019 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2020 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2021 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2022 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2023 struct cfg80211_csa_settings *csa_settings); 2024 2025 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2026 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2027 const struct ieee80211_cipher_scheme * 2028 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2029 enum nl80211_iftype iftype); 2030 int ieee80211_cs_headroom(struct ieee80211_local *local, 2031 struct cfg80211_crypto_settings *crypto, 2032 enum nl80211_iftype iftype); 2033 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2034 struct ieee80211_sub_if_data *sdata); 2035 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2036 const struct cfg80211_chan_def *chandef, 2037 enum ieee80211_chanctx_mode chanmode, 2038 u8 radar_detect); 2039 int ieee80211_max_num_channels(struct ieee80211_local *local); 2040 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2041 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2042 struct ieee80211_chanctx *ctx); 2043 2044 /* TDLS */ 2045 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2046 const u8 *peer, u8 action_code, u8 dialog_token, 2047 u16 status_code, u32 peer_capability, 2048 bool initiator, const u8 *extra_ies, 2049 size_t extra_ies_len); 2050 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2051 const u8 *peer, enum nl80211_tdls_operation oper); 2052 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2053 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2054 const u8 *addr, u8 oper_class, 2055 struct cfg80211_chan_def *chandef); 2056 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2057 struct net_device *dev, 2058 const u8 *addr); 2059 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2060 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2061 2062 extern const struct ethtool_ops ieee80211_ethtool_ops; 2063 2064 #ifdef CONFIG_MAC80211_NOINLINE 2065 #define debug_noinline noinline 2066 #else 2067 #define debug_noinline 2068 #endif 2069 2070 #endif /* IEEE80211_I_H */ 2071