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 struct ieee80211_local; 38 39 /* Maximum number of broadcast/multicast frames to buffer when some of the 40 * associated stations are using power saving. */ 41 #define AP_MAX_BC_BUFFER 128 42 43 /* Maximum number of frames buffered to all STAs, including multicast frames. 44 * Note: increasing this limit increases the potential memory requirement. Each 45 * frame can be up to about 2 kB long. */ 46 #define TOTAL_MAX_TX_BUFFER 512 47 48 /* Required encryption head and tailroom */ 49 #define IEEE80211_ENCRYPT_HEADROOM 8 50 #define IEEE80211_ENCRYPT_TAILROOM 18 51 52 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 53 * reception of at least three fragmented frames. This limit can be increased 54 * by changing this define, at the cost of slower frame reassembly and 55 * increased memory use (about 2 kB of RAM per entry). */ 56 #define IEEE80211_FRAGMENT_MAX 4 57 58 /* power level hasn't been configured (or set to automatic) */ 59 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 60 61 /* 62 * Some APs experience problems when working with U-APSD. Decreasing the 63 * probability of that happening by using legacy mode for all ACs but VO isn't 64 * enough. 65 * 66 * Cisco 4410N originally forced us to enable VO by default only because it 67 * treated non-VO ACs as legacy. 68 * 69 * However some APs (notably Netgear R7000) silently reclassify packets to 70 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 71 * clients would never see some frames (e.g. ARP responses) or would fetch them 72 * accidentally after a long time. 73 * 74 * It makes little sense to enable u-APSD queues by default because it needs 75 * userspace applications to be aware of it to actually take advantage of the 76 * possible additional powersavings. Implicitly depending on driver autotrigger 77 * frame support doesn't make much sense. 78 */ 79 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 80 81 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 82 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 struct ieee80211_fragment_entry { 87 unsigned long first_frag_time; 88 unsigned int seq; 89 unsigned int rx_queue; 90 unsigned int last_frag; 91 unsigned int extra_len; 92 struct sk_buff_head skb_list; 93 int ccmp; /* Whether fragments were encrypted with CCMP */ 94 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 95 }; 96 97 98 struct ieee80211_bss { 99 u32 device_ts_beacon, device_ts_presp; 100 101 bool wmm_used; 102 bool uapsd_supported; 103 104 #define IEEE80211_MAX_SUPP_RATES 32 105 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 106 size_t supp_rates_len; 107 struct ieee80211_rate *beacon_rate; 108 109 /* 110 * During association, we save an ERP value from a probe response so 111 * that we can feed ERP info to the driver when handling the 112 * association completes. these fields probably won't be up-to-date 113 * otherwise, you probably don't want to use them. 114 */ 115 bool has_erp_value; 116 u8 erp_value; 117 118 /* Keep track of the corruption of the last beacon/probe response. */ 119 u8 corrupt_data; 120 121 /* Keep track of what bits of information we have valid info for. */ 122 u8 valid_data; 123 }; 124 125 /** 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 129 * 130 * These are bss flags that are attached to a bss in the 131 * @corrupt_data field of &struct ieee80211_bss. 132 */ 133 enum ieee80211_bss_corrupt_data_flags { 134 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 135 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 136 }; 137 138 /** 139 * enum ieee80211_valid_data_flags - BSS valid data flags 140 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 142 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 143 * 144 * These are bss flags that are attached to a bss in the 145 * @valid_data field of &struct ieee80211_bss. They show which parts 146 * of the data structure were received as a result of an un-corrupted 147 * beacon/probe response. 148 */ 149 enum ieee80211_bss_valid_data_flags { 150 IEEE80211_BSS_VALID_WMM = BIT(1), 151 IEEE80211_BSS_VALID_RATES = BIT(2), 152 IEEE80211_BSS_VALID_ERP = BIT(3) 153 }; 154 155 typedef unsigned __bitwise__ ieee80211_tx_result; 156 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 157 #define TX_DROP ((__force ieee80211_tx_result) 1u) 158 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 159 160 #define IEEE80211_TX_UNICAST BIT(1) 161 #define IEEE80211_TX_PS_BUFFERED BIT(2) 162 163 struct ieee80211_tx_data { 164 struct sk_buff *skb; 165 struct sk_buff_head skbs; 166 struct ieee80211_local *local; 167 struct ieee80211_sub_if_data *sdata; 168 struct sta_info *sta; 169 struct ieee80211_key *key; 170 struct ieee80211_tx_rate rate; 171 172 unsigned int flags; 173 }; 174 175 176 typedef unsigned __bitwise__ ieee80211_rx_result; 177 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 178 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 179 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 180 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 181 182 /** 183 * enum ieee80211_packet_rx_flags - packet RX flags 184 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 185 * (incl. multicast frames) 186 * @IEEE80211_RX_FRAGMENTED: fragmented frame 187 * @IEEE80211_RX_AMSDU: a-MSDU packet 188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 190 * 191 * These are per-frame flags that are attached to a frame in the 192 * @rx_flags field of &struct ieee80211_rx_status. 193 */ 194 enum ieee80211_packet_rx_flags { 195 IEEE80211_RX_RA_MATCH = BIT(1), 196 IEEE80211_RX_FRAGMENTED = BIT(2), 197 IEEE80211_RX_AMSDU = BIT(3), 198 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 199 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 200 }; 201 202 /** 203 * enum ieee80211_rx_flags - RX data flags 204 * 205 * @IEEE80211_RX_CMNTR: received on cooked monitor already 206 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 207 * to cfg80211_report_obss_beacon(). 208 * 209 * These flags are used across handling multiple interfaces 210 * for a single frame. 211 */ 212 enum ieee80211_rx_flags { 213 IEEE80211_RX_CMNTR = BIT(0), 214 IEEE80211_RX_BEACON_REPORTED = BIT(1), 215 }; 216 217 struct ieee80211_rx_data { 218 struct sk_buff *skb; 219 struct ieee80211_local *local; 220 struct ieee80211_sub_if_data *sdata; 221 struct sta_info *sta; 222 struct ieee80211_key *key; 223 224 unsigned int flags; 225 226 /* 227 * Index into sequence numbers array, 0..16 228 * since the last (16) is used for non-QoS, 229 * will be 16 on non-QoS frames. 230 */ 231 int seqno_idx; 232 233 /* 234 * Index into the security IV/PN arrays, 0..16 235 * since the last (16) is used for CCMP-encrypted 236 * management frames, will be set to 16 on mgmt 237 * frames and 0 on non-QoS frames. 238 */ 239 int security_idx; 240 241 u32 tkip_iv32; 242 u16 tkip_iv16; 243 }; 244 245 struct ieee80211_csa_settings { 246 const u16 *counter_offsets_beacon; 247 const u16 *counter_offsets_presp; 248 249 int n_counter_offsets_beacon; 250 int n_counter_offsets_presp; 251 252 u8 count; 253 }; 254 255 struct beacon_data { 256 u8 *head, *tail; 257 int head_len, tail_len; 258 struct ieee80211_meshconf_ie *meshconf; 259 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 260 u8 csa_current_counter; 261 struct rcu_head rcu_head; 262 }; 263 264 struct probe_resp { 265 struct rcu_head rcu_head; 266 int len; 267 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 268 u8 data[0]; 269 }; 270 271 struct ps_data { 272 /* yes, this looks ugly, but guarantees that we can later use 273 * bitmap_empty :) 274 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 275 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 276 __aligned(__alignof__(unsigned long)); 277 struct sk_buff_head bc_buf; 278 atomic_t num_sta_ps; /* number of stations in PS mode */ 279 int dtim_count; 280 bool dtim_bc_mc; 281 }; 282 283 struct ieee80211_if_ap { 284 struct beacon_data __rcu *beacon; 285 struct probe_resp __rcu *probe_resp; 286 287 /* to be used after channel switch. */ 288 struct cfg80211_beacon_data *next_beacon; 289 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 290 291 struct ps_data ps; 292 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 293 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 294 driver_smps_mode; /* smps mode request */ 295 296 struct work_struct request_smps_work; 297 }; 298 299 struct ieee80211_if_wds { 300 struct sta_info *sta; 301 u8 remote_addr[ETH_ALEN]; 302 }; 303 304 struct ieee80211_if_vlan { 305 struct list_head list; /* write-protected with RTNL and local->mtx */ 306 307 /* used for all tx if the VLAN is configured to 4-addr mode */ 308 struct sta_info __rcu *sta; 309 }; 310 311 struct mesh_stats { 312 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 313 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 314 __u32 fwded_frames; /* Mesh total forwarded frames */ 315 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 316 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 317 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 318 }; 319 320 #define PREQ_Q_F_START 0x1 321 #define PREQ_Q_F_REFRESH 0x2 322 struct mesh_preq_queue { 323 struct list_head list; 324 u8 dst[ETH_ALEN]; 325 u8 flags; 326 }; 327 328 #if HZ/100 == 0 329 #define IEEE80211_ROC_MIN_LEFT 1 330 #else 331 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 332 #endif 333 334 struct ieee80211_roc_work { 335 struct list_head list; 336 struct list_head dependents; 337 338 struct delayed_work work; 339 340 struct ieee80211_sub_if_data *sdata; 341 342 struct ieee80211_channel *chan; 343 344 bool started, abort, hw_begun, notified; 345 bool to_be_freed; 346 bool on_channel; 347 348 unsigned long hw_start_time; 349 350 u32 duration, req_duration; 351 struct sk_buff *frame; 352 u64 cookie, mgmt_tx_cookie; 353 enum ieee80211_roc_type type; 354 }; 355 356 /* flags used in struct ieee80211_if_managed.flags */ 357 enum ieee80211_sta_flags { 358 IEEE80211_STA_CONNECTION_POLL = BIT(1), 359 IEEE80211_STA_CONTROL_PORT = BIT(2), 360 IEEE80211_STA_DISABLE_HT = BIT(4), 361 IEEE80211_STA_MFP_ENABLED = BIT(6), 362 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 363 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 364 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 365 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 366 IEEE80211_STA_DISABLE_VHT = BIT(11), 367 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 368 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 369 IEEE80211_STA_DISABLE_WMM = BIT(14), 370 IEEE80211_STA_ENABLE_RRM = BIT(15), 371 }; 372 373 struct ieee80211_mgd_auth_data { 374 struct cfg80211_bss *bss; 375 unsigned long timeout; 376 int tries; 377 u16 algorithm, expected_transaction; 378 379 u8 key[WLAN_KEY_LEN_WEP104]; 380 u8 key_len, key_idx; 381 bool done; 382 bool timeout_started; 383 384 u16 sae_trans, sae_status; 385 size_t data_len; 386 u8 data[]; 387 }; 388 389 struct ieee80211_mgd_assoc_data { 390 struct cfg80211_bss *bss; 391 const u8 *supp_rates; 392 393 unsigned long timeout; 394 int tries; 395 396 u16 capability; 397 u8 prev_bssid[ETH_ALEN]; 398 u8 ssid[IEEE80211_MAX_SSID_LEN]; 399 u8 ssid_len; 400 u8 supp_rates_len; 401 bool wmm, uapsd; 402 bool need_beacon; 403 bool synced; 404 bool timeout_started; 405 406 u8 ap_ht_param; 407 408 struct ieee80211_vht_cap ap_vht_cap; 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 struct ieee80211_if_managed { 433 struct timer_list timer; 434 struct timer_list conn_mon_timer; 435 struct timer_list bcn_mon_timer; 436 struct timer_list chswitch_timer; 437 struct work_struct monitor_work; 438 struct work_struct chswitch_work; 439 struct work_struct beacon_connection_loss_work; 440 struct work_struct csa_connection_drop_work; 441 442 unsigned long beacon_timeout; 443 unsigned long probe_timeout; 444 int probe_send_count; 445 bool nullfunc_failed; 446 bool connection_loss; 447 448 struct cfg80211_bss *associated; 449 struct ieee80211_mgd_auth_data *auth_data; 450 struct ieee80211_mgd_assoc_data *assoc_data; 451 452 u8 bssid[ETH_ALEN]; 453 454 u16 aid; 455 456 bool powersave; /* powersave requested for this iface */ 457 bool broken_ap; /* AP is broken -- turn off powersave */ 458 bool have_beacon; 459 u8 dtim_period; 460 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 461 driver_smps_mode; /* smps mode request */ 462 463 struct work_struct request_smps_work; 464 465 unsigned int flags; 466 467 bool csa_waiting_bcn; 468 bool csa_ignored_same_chan; 469 470 bool beacon_crc_valid; 471 u32 beacon_crc; 472 473 bool status_acked; 474 bool status_received; 475 __le16 status_fc; 476 477 enum { 478 IEEE80211_MFP_DISABLED, 479 IEEE80211_MFP_OPTIONAL, 480 IEEE80211_MFP_REQUIRED 481 } mfp; /* management frame protection */ 482 483 /* 484 * Bitmask of enabled u-apsd queues, 485 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 486 * to take effect. 487 */ 488 unsigned int uapsd_queues; 489 490 /* 491 * Maximum number of buffered frames AP can deliver during a 492 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 493 * Needs a new association to take effect. 494 */ 495 unsigned int uapsd_max_sp_len; 496 497 int wmm_last_param_set; 498 499 u8 use_4addr; 500 501 s16 p2p_noa_index; 502 503 /* Signal strength from the last Beacon frame in the current BSS. */ 504 int last_beacon_signal; 505 506 /* 507 * Weighted average of the signal strength from Beacon frames in the 508 * current BSS. This is in units of 1/16 of the signal unit to maintain 509 * accuracy and to speed up calculations, i.e., the value need to be 510 * divided by 16 to get the actual value. 511 */ 512 int ave_beacon_signal; 513 514 /* 515 * Number of Beacon frames used in ave_beacon_signal. This can be used 516 * to avoid generating less reliable cqm events that would be based 517 * only on couple of received frames. 518 */ 519 unsigned int count_beacon_signal; 520 521 /* 522 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 523 * that triggered a cqm event. 0 indicates that no event has been 524 * generated for the current association. 525 */ 526 int last_cqm_event_signal; 527 528 /* 529 * State variables for keeping track of RSSI of the AP currently 530 * connected to and informing driver when RSSI has gone 531 * below/above a certain threshold. 532 */ 533 int rssi_min_thold, rssi_max_thold; 534 int last_ave_beacon_signal; 535 536 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 537 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 538 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 539 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 540 541 /* TDLS support */ 542 u8 tdls_peer[ETH_ALEN] __aligned(2); 543 struct delayed_work tdls_peer_del_work; 544 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 545 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 546 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 547 bool tdls_chan_switch_prohibited; 548 549 /* WMM-AC TSPEC support */ 550 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 551 /* Use a separate work struct so that we can do something here 552 * while the sdata->work is flushing the queues, for example. 553 * otherwise, in scenarios where we hardly get any traffic out 554 * on the BE queue, but there's a lot of VO traffic, we might 555 * get stuck in a downgraded situation and flush takes forever. 556 */ 557 struct delayed_work tx_tspec_wk; 558 }; 559 560 struct ieee80211_if_ibss { 561 struct timer_list timer; 562 struct work_struct csa_connection_drop_work; 563 564 unsigned long last_scan_completed; 565 566 u32 basic_rates; 567 568 bool fixed_bssid; 569 bool fixed_channel; 570 bool privacy; 571 572 bool control_port; 573 bool userspace_handles_dfs; 574 575 u8 bssid[ETH_ALEN] __aligned(2); 576 u8 ssid[IEEE80211_MAX_SSID_LEN]; 577 u8 ssid_len, ie_len; 578 u8 *ie; 579 struct cfg80211_chan_def chandef; 580 581 unsigned long ibss_join_req; 582 /* probe response/beacon for IBSS */ 583 struct beacon_data __rcu *presp; 584 585 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 586 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 587 588 spinlock_t incomplete_lock; 589 struct list_head incomplete_stations; 590 591 enum { 592 IEEE80211_IBSS_MLME_SEARCH, 593 IEEE80211_IBSS_MLME_JOINED, 594 } state; 595 }; 596 597 /** 598 * struct ieee80211_if_ocb - OCB mode state 599 * 600 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 601 * @wrkq_flags: OCB deferred task action 602 * @incomplete_lock: delayed STA insertion lock 603 * @incomplete_stations: list of STAs waiting for delayed insertion 604 * @joined: indication if the interface is connected to an OCB network 605 */ 606 struct ieee80211_if_ocb { 607 struct timer_list housekeeping_timer; 608 unsigned long wrkq_flags; 609 610 spinlock_t incomplete_lock; 611 struct list_head incomplete_stations; 612 613 bool joined; 614 }; 615 616 /** 617 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 618 * 619 * these declarations define the interface, which enables 620 * vendor-specific mesh synchronization 621 * 622 */ 623 struct ieee802_11_elems; 624 struct ieee80211_mesh_sync_ops { 625 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 626 u16 stype, 627 struct ieee80211_mgmt *mgmt, 628 struct ieee802_11_elems *elems, 629 struct ieee80211_rx_status *rx_status); 630 631 /* should be called with beacon_data under RCU read lock */ 632 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 633 struct beacon_data *beacon); 634 /* add other framework functions here */ 635 }; 636 637 struct mesh_csa_settings { 638 struct rcu_head rcu_head; 639 struct cfg80211_csa_settings settings; 640 }; 641 642 struct ieee80211_if_mesh { 643 struct timer_list housekeeping_timer; 644 struct timer_list mesh_path_timer; 645 struct timer_list mesh_path_root_timer; 646 647 unsigned long wrkq_flags; 648 unsigned long mbss_changed; 649 650 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 651 size_t mesh_id_len; 652 /* Active Path Selection Protocol Identifier */ 653 u8 mesh_pp_id; 654 /* Active Path Selection Metric Identifier */ 655 u8 mesh_pm_id; 656 /* Congestion Control Mode Identifier */ 657 u8 mesh_cc_id; 658 /* Synchronization Protocol Identifier */ 659 u8 mesh_sp_id; 660 /* Authentication Protocol Identifier */ 661 u8 mesh_auth_id; 662 /* Local mesh Sequence Number */ 663 u32 sn; 664 /* Last used PREQ ID */ 665 u32 preq_id; 666 atomic_t mpaths; 667 /* Timestamp of last SN update */ 668 unsigned long last_sn_update; 669 /* Time when it's ok to send next PERR */ 670 unsigned long next_perr; 671 /* Timestamp of last PREQ sent */ 672 unsigned long last_preq; 673 struct mesh_rmc *rmc; 674 spinlock_t mesh_preq_queue_lock; 675 struct mesh_preq_queue preq_queue; 676 int preq_queue_len; 677 struct mesh_stats mshstats; 678 struct mesh_config mshcfg; 679 atomic_t estab_plinks; 680 u32 mesh_seqnum; 681 bool accepting_plinks; 682 int num_gates; 683 struct beacon_data __rcu *beacon; 684 const u8 *ie; 685 u8 ie_len; 686 enum { 687 IEEE80211_MESH_SEC_NONE = 0x0, 688 IEEE80211_MESH_SEC_AUTHED = 0x1, 689 IEEE80211_MESH_SEC_SECURED = 0x2, 690 } security; 691 bool user_mpm; 692 /* Extensible Synchronization Framework */ 693 const struct ieee80211_mesh_sync_ops *sync_ops; 694 s64 sync_offset_clockdrift_max; 695 spinlock_t sync_offset_lock; 696 bool adjusting_tbtt; 697 /* mesh power save */ 698 enum nl80211_mesh_power_mode nonpeer_pm; 699 int ps_peers_light_sleep; 700 int ps_peers_deep_sleep; 701 struct ps_data ps; 702 /* Channel Switching Support */ 703 struct mesh_csa_settings __rcu *csa; 704 enum { 705 IEEE80211_MESH_CSA_ROLE_NONE, 706 IEEE80211_MESH_CSA_ROLE_INIT, 707 IEEE80211_MESH_CSA_ROLE_REPEATER, 708 } csa_role; 709 u8 chsw_ttl; 710 u16 pre_value; 711 712 /* offset from skb->data while building IE */ 713 int meshconf_offset; 714 }; 715 716 #ifdef CONFIG_MAC80211_MESH 717 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 718 do { (msh)->mshstats.name++; } while (0) 719 #else 720 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 721 do { } while (0) 722 #endif 723 724 /** 725 * enum ieee80211_sub_if_data_flags - virtual interface flags 726 * 727 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 728 * @IEEE80211_SDATA_PROMISC: interface is promisc 729 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 730 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 731 * associated stations and deliver multicast frames both 732 * back to wireless media and to the local net stack. 733 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 734 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 735 */ 736 enum ieee80211_sub_if_data_flags { 737 IEEE80211_SDATA_ALLMULTI = BIT(0), 738 IEEE80211_SDATA_PROMISC = BIT(1), 739 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 740 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 741 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 742 IEEE80211_SDATA_IN_DRIVER = BIT(5), 743 }; 744 745 /** 746 * enum ieee80211_sdata_state_bits - virtual interface state bits 747 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 748 * mirrors netif_running() but is separate for interface type 749 * change handling while the interface is up 750 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 751 * mode, so queues are stopped 752 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 753 * to offchannel, reset when offchannel returns 754 */ 755 enum ieee80211_sdata_state_bits { 756 SDATA_STATE_RUNNING, 757 SDATA_STATE_OFFCHANNEL, 758 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 759 }; 760 761 /** 762 * enum ieee80211_chanctx_mode - channel context configuration mode 763 * 764 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 765 * multiple interfaces 766 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 767 * only by a single interface. This can be used for example for 768 * non-fixed channel IBSS. 769 */ 770 enum ieee80211_chanctx_mode { 771 IEEE80211_CHANCTX_SHARED, 772 IEEE80211_CHANCTX_EXCLUSIVE 773 }; 774 775 /** 776 * enum ieee80211_chanctx_replace_state - channel context replacement state 777 * 778 * This is used for channel context in-place reservations that require channel 779 * context switch/swap. 780 * 781 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 782 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 783 * by a (not yet registered) channel context pointed by %replace_ctx. 784 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 785 * replaces an existing channel context pointed to by %replace_ctx. 786 */ 787 enum ieee80211_chanctx_replace_state { 788 IEEE80211_CHANCTX_REPLACE_NONE, 789 IEEE80211_CHANCTX_WILL_BE_REPLACED, 790 IEEE80211_CHANCTX_REPLACES_OTHER, 791 }; 792 793 struct ieee80211_chanctx { 794 struct list_head list; 795 struct rcu_head rcu_head; 796 797 struct list_head assigned_vifs; 798 struct list_head reserved_vifs; 799 800 enum ieee80211_chanctx_replace_state replace_state; 801 struct ieee80211_chanctx *replace_ctx; 802 803 enum ieee80211_chanctx_mode mode; 804 bool driver_present; 805 806 struct ieee80211_chanctx_conf conf; 807 }; 808 809 struct mac80211_qos_map { 810 struct cfg80211_qos_map qos_map; 811 struct rcu_head rcu_head; 812 }; 813 814 enum txq_info_flags { 815 IEEE80211_TXQ_STOP, 816 IEEE80211_TXQ_AMPDU, 817 }; 818 819 struct txq_info { 820 struct sk_buff_head queue; 821 unsigned long flags; 822 823 /* keep last! */ 824 struct ieee80211_txq txq; 825 }; 826 827 struct ieee80211_sub_if_data { 828 struct list_head list; 829 830 struct wireless_dev wdev; 831 832 /* keys */ 833 struct list_head key_list; 834 835 /* count for keys needing tailroom space allocation */ 836 int crypto_tx_tailroom_needed_cnt; 837 int crypto_tx_tailroom_pending_dec; 838 struct delayed_work dec_tailroom_needed_wk; 839 840 struct net_device *dev; 841 struct ieee80211_local *local; 842 843 unsigned int flags; 844 845 unsigned long state; 846 847 char name[IFNAMSIZ]; 848 849 /* Fragment table for host-based reassembly */ 850 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 851 unsigned int fragment_next; 852 853 /* TID bitmap for NoAck policy */ 854 u16 noack_map; 855 856 /* bit field of ACM bits (BIT(802.1D tag)) */ 857 u8 wmm_acm; 858 859 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 860 struct ieee80211_key __rcu *default_unicast_key; 861 struct ieee80211_key __rcu *default_multicast_key; 862 struct ieee80211_key __rcu *default_mgmt_key; 863 864 u16 sequence_number; 865 __be16 control_port_protocol; 866 bool control_port_no_encrypt; 867 int encrypt_headroom; 868 869 atomic_t txqs_len[IEEE80211_NUM_ACS]; 870 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 871 struct mac80211_qos_map __rcu *qos_map; 872 873 struct work_struct csa_finalize_work; 874 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 875 struct cfg80211_chan_def csa_chandef; 876 877 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 878 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 879 880 /* context reservation -- protected with chanctx_mtx */ 881 struct ieee80211_chanctx *reserved_chanctx; 882 struct cfg80211_chan_def reserved_chandef; 883 bool reserved_radar_required; 884 bool reserved_ready; 885 886 /* used to reconfigure hardware SM PS */ 887 struct work_struct recalc_smps; 888 889 struct work_struct work; 890 struct sk_buff_head skb_queue; 891 892 u8 needed_rx_chains; 893 enum ieee80211_smps_mode smps_mode; 894 895 int user_power_level; /* in dBm */ 896 int ap_power_level; /* in dBm */ 897 898 bool radar_required; 899 struct delayed_work dfs_cac_timer_work; 900 901 /* 902 * AP this belongs to: self in AP mode and 903 * corresponding AP in VLAN mode, NULL for 904 * all others (might be needed later in IBSS) 905 */ 906 struct ieee80211_if_ap *bss; 907 908 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 909 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 910 911 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 912 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 913 914 union { 915 struct ieee80211_if_ap ap; 916 struct ieee80211_if_wds wds; 917 struct ieee80211_if_vlan vlan; 918 struct ieee80211_if_managed mgd; 919 struct ieee80211_if_ibss ibss; 920 struct ieee80211_if_mesh mesh; 921 struct ieee80211_if_ocb ocb; 922 u32 mntr_flags; 923 } u; 924 925 #ifdef CONFIG_MAC80211_DEBUGFS 926 struct { 927 struct dentry *subdir_stations; 928 struct dentry *default_unicast_key; 929 struct dentry *default_multicast_key; 930 struct dentry *default_mgmt_key; 931 } debugfs; 932 #endif 933 934 /* must be last, dynamically sized area in this! */ 935 struct ieee80211_vif vif; 936 }; 937 938 static inline 939 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 940 { 941 return container_of(p, struct ieee80211_sub_if_data, vif); 942 } 943 944 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 945 __acquires(&sdata->wdev.mtx) 946 { 947 mutex_lock(&sdata->wdev.mtx); 948 __acquire(&sdata->wdev.mtx); 949 } 950 951 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 952 __releases(&sdata->wdev.mtx) 953 { 954 mutex_unlock(&sdata->wdev.mtx); 955 __release(&sdata->wdev.mtx); 956 } 957 958 #define sdata_dereference(p, sdata) \ 959 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 960 961 static inline void 962 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 963 { 964 lockdep_assert_held(&sdata->wdev.mtx); 965 } 966 967 static inline enum ieee80211_band 968 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 969 { 970 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 971 struct ieee80211_chanctx_conf *chanctx_conf; 972 973 rcu_read_lock(); 974 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 975 if (!WARN_ON(!chanctx_conf)) 976 band = chanctx_conf->def.chan->band; 977 rcu_read_unlock(); 978 979 return band; 980 } 981 982 static inline int 983 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 984 { 985 switch (chandef->width) { 986 case NL80211_CHAN_WIDTH_5: 987 return 2; 988 case NL80211_CHAN_WIDTH_10: 989 return 1; 990 default: 991 return 0; 992 } 993 } 994 995 static inline int 996 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 997 { 998 struct ieee80211_chanctx_conf *chanctx_conf; 999 int shift = 0; 1000 1001 rcu_read_lock(); 1002 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1003 if (chanctx_conf) 1004 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1005 rcu_read_unlock(); 1006 1007 return shift; 1008 } 1009 1010 struct ieee80211_rx_agg { 1011 u8 addr[ETH_ALEN]; 1012 u16 tid; 1013 }; 1014 1015 enum sdata_queue_type { 1016 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1017 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1018 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1019 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1020 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1021 IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5, 1022 }; 1023 1024 enum { 1025 IEEE80211_RX_MSG = 1, 1026 IEEE80211_TX_STATUS_MSG = 2, 1027 }; 1028 1029 enum queue_stop_reason { 1030 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1031 IEEE80211_QUEUE_STOP_REASON_PS, 1032 IEEE80211_QUEUE_STOP_REASON_CSA, 1033 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1034 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1035 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1036 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1037 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1038 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1039 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1040 1041 IEEE80211_QUEUE_STOP_REASONS, 1042 }; 1043 1044 #ifdef CONFIG_MAC80211_LEDS 1045 struct tpt_led_trigger { 1046 struct led_trigger trig; 1047 char name[32]; 1048 const struct ieee80211_tpt_blink *blink_table; 1049 unsigned int blink_table_len; 1050 struct timer_list timer; 1051 unsigned long prev_traffic; 1052 unsigned long tx_bytes, rx_bytes; 1053 unsigned int active, want; 1054 bool running; 1055 }; 1056 #endif 1057 1058 /** 1059 * mac80211 scan flags - currently active scan mode 1060 * 1061 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1062 * well be on the operating channel 1063 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1064 * determine if we are on the operating channel or not 1065 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1066 * channel. This should not interrupt normal traffic. 1067 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1068 * that the scan completed. 1069 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1070 * a scan complete for an aborted scan. 1071 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1072 * cancelled. 1073 */ 1074 enum { 1075 SCAN_SW_SCANNING, 1076 SCAN_HW_SCANNING, 1077 SCAN_ONCHANNEL_SCANNING, 1078 SCAN_COMPLETED, 1079 SCAN_ABORTED, 1080 SCAN_HW_CANCELLED, 1081 }; 1082 1083 /** 1084 * enum mac80211_scan_state - scan state machine states 1085 * 1086 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1087 * determines if we should keep on scanning or switch back to the 1088 * operating channel 1089 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1090 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1091 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1092 * send out data 1093 * @SCAN_RESUME: Resume the scan and scan the next channel 1094 * @SCAN_ABORT: Abort the scan and go back to operating channel 1095 */ 1096 enum mac80211_scan_state { 1097 SCAN_DECISION, 1098 SCAN_SET_CHANNEL, 1099 SCAN_SEND_PROBE, 1100 SCAN_SUSPEND, 1101 SCAN_RESUME, 1102 SCAN_ABORT, 1103 }; 1104 1105 struct ieee80211_local { 1106 /* embed the driver visible part. 1107 * don't cast (use the static inlines below), but we keep 1108 * it first anyway so they become a no-op */ 1109 struct ieee80211_hw hw; 1110 1111 const struct ieee80211_ops *ops; 1112 1113 /* 1114 * private workqueue to mac80211. mac80211 makes this accessible 1115 * via ieee80211_queue_work() 1116 */ 1117 struct workqueue_struct *workqueue; 1118 1119 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1120 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1121 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1122 spinlock_t queue_stop_reason_lock; 1123 1124 int open_count; 1125 int monitors, cooked_mntrs; 1126 /* number of interfaces with corresponding FIF_ flags */ 1127 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1128 fif_probe_req; 1129 int probe_req_reg; 1130 unsigned int filter_flags; /* FIF_* */ 1131 1132 bool wiphy_ciphers_allocated; 1133 1134 bool use_chanctx; 1135 1136 /* protects the aggregated multicast list and filter calls */ 1137 spinlock_t filter_lock; 1138 1139 /* used for uploading changed mc list */ 1140 struct work_struct reconfig_filter; 1141 1142 /* aggregated multicast list */ 1143 struct netdev_hw_addr_list mc_list; 1144 1145 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1146 1147 /* 1148 * suspended is true if we finished all the suspend _and_ we have 1149 * not yet come up from resume. This is to be used by mac80211 1150 * to ensure driver sanity during suspend and mac80211's own 1151 * sanity. It can eventually be used for WoW as well. 1152 */ 1153 bool suspended; 1154 1155 /* 1156 * Resuming is true while suspended, but when we're reprogramming the 1157 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1158 * again even though some other parts of the stack are still suspended 1159 * and we still drop received frames to avoid waking the stack. 1160 */ 1161 bool resuming; 1162 1163 /* 1164 * quiescing is true during the suspend process _only_ to 1165 * ease timer cancelling etc. 1166 */ 1167 bool quiescing; 1168 1169 /* device is started */ 1170 bool started; 1171 1172 /* device is during a HW reconfig */ 1173 bool in_reconfig; 1174 1175 /* wowlan is enabled -- don't reconfig on resume */ 1176 bool wowlan; 1177 1178 struct work_struct radar_detected_work; 1179 1180 /* number of RX chains the hardware has */ 1181 u8 rx_chains; 1182 1183 int tx_headroom; /* required headroom for hardware/radiotap */ 1184 1185 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1186 * added to skb_queue will be processed, but frames in 1187 * skb_queue_unreliable may be dropped if the total length of these 1188 * queues increases over the limit. */ 1189 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1190 struct tasklet_struct tasklet; 1191 struct sk_buff_head skb_queue; 1192 struct sk_buff_head skb_queue_unreliable; 1193 1194 spinlock_t rx_path_lock; 1195 1196 /* Station data */ 1197 /* 1198 * The mutex only protects the list, hash table and 1199 * counter, reads are done with RCU. 1200 */ 1201 struct mutex sta_mtx; 1202 spinlock_t tim_lock; 1203 unsigned long num_sta; 1204 struct list_head sta_list; 1205 struct rhashtable sta_hash; 1206 struct timer_list sta_cleanup; 1207 int sta_generation; 1208 1209 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1210 struct tasklet_struct tx_pending_tasklet; 1211 1212 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1213 1214 /* number of interfaces with corresponding IFF_ flags */ 1215 atomic_t iff_allmultis, iff_promiscs; 1216 1217 struct rate_control_ref *rate_ctrl; 1218 1219 struct crypto_cipher *wep_tx_tfm; 1220 struct crypto_cipher *wep_rx_tfm; 1221 u32 wep_iv; 1222 1223 /* see iface.c */ 1224 struct list_head interfaces; 1225 struct mutex iflist_mtx; 1226 1227 /* 1228 * Key mutex, protects sdata's key_list and sta_info's 1229 * key pointers (write access, they're RCU.) 1230 */ 1231 struct mutex key_mtx; 1232 1233 /* mutex for scan and work locking */ 1234 struct mutex mtx; 1235 1236 /* Scanning and BSS list */ 1237 unsigned long scanning; 1238 struct cfg80211_ssid scan_ssid; 1239 struct cfg80211_scan_request *int_scan_req; 1240 struct cfg80211_scan_request __rcu *scan_req; 1241 struct ieee80211_scan_request *hw_scan_req; 1242 struct cfg80211_chan_def scan_chandef; 1243 enum ieee80211_band hw_scan_band; 1244 int scan_channel_idx; 1245 int scan_ies_len; 1246 int hw_scan_ies_bufsize; 1247 1248 struct work_struct sched_scan_stopped_work; 1249 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1250 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1251 u8 scan_addr[ETH_ALEN]; 1252 1253 unsigned long leave_oper_channel_time; 1254 enum mac80211_scan_state next_scan_state; 1255 struct delayed_work scan_work; 1256 struct ieee80211_sub_if_data __rcu *scan_sdata; 1257 /* For backward compatibility only -- do not use */ 1258 struct cfg80211_chan_def _oper_chandef; 1259 1260 /* Temporary remain-on-channel for off-channel operations */ 1261 struct ieee80211_channel *tmp_channel; 1262 1263 /* channel contexts */ 1264 struct list_head chanctx_list; 1265 struct mutex chanctx_mtx; 1266 1267 /* SNMP counters */ 1268 /* dot11CountersTable */ 1269 u32 dot11TransmittedFragmentCount; 1270 u32 dot11MulticastTransmittedFrameCount; 1271 u32 dot11FailedCount; 1272 u32 dot11RetryCount; 1273 u32 dot11MultipleRetryCount; 1274 u32 dot11FrameDuplicateCount; 1275 u32 dot11ReceivedFragmentCount; 1276 u32 dot11MulticastReceivedFrameCount; 1277 u32 dot11TransmittedFrameCount; 1278 1279 #ifdef CONFIG_MAC80211_LEDS 1280 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1281 struct tpt_led_trigger *tpt_led_trigger; 1282 char tx_led_name[32], rx_led_name[32], 1283 assoc_led_name[32], radio_led_name[32]; 1284 #endif 1285 1286 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1287 /* TX/RX handler statistics */ 1288 unsigned int tx_handlers_drop; 1289 unsigned int tx_handlers_queued; 1290 unsigned int tx_handlers_drop_fragment; 1291 unsigned int tx_handlers_drop_wep; 1292 unsigned int tx_handlers_drop_not_assoc; 1293 unsigned int tx_handlers_drop_unauth_port; 1294 unsigned int rx_handlers_drop; 1295 unsigned int rx_handlers_queued; 1296 unsigned int rx_handlers_drop_nullfunc; 1297 unsigned int rx_handlers_drop_defrag; 1298 unsigned int rx_handlers_drop_short; 1299 unsigned int tx_expand_skb_head; 1300 unsigned int tx_expand_skb_head_cloned; 1301 unsigned int rx_expand_skb_head; 1302 unsigned int rx_expand_skb_head2; 1303 unsigned int rx_handlers_fragments; 1304 unsigned int tx_status_drop; 1305 #define I802_DEBUG_INC(c) (c)++ 1306 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1307 #define I802_DEBUG_INC(c) do { } while (0) 1308 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1309 1310 1311 int total_ps_buffered; /* total number of all buffered unicast and 1312 * multicast packets for power saving stations 1313 */ 1314 1315 bool pspolling; 1316 bool offchannel_ps_enabled; 1317 /* 1318 * PS can only be enabled when we have exactly one managed 1319 * interface (and monitors) in PS, this then points there. 1320 */ 1321 struct ieee80211_sub_if_data *ps_sdata; 1322 struct work_struct dynamic_ps_enable_work; 1323 struct work_struct dynamic_ps_disable_work; 1324 struct timer_list dynamic_ps_timer; 1325 struct notifier_block network_latency_notifier; 1326 struct notifier_block ifa_notifier; 1327 struct notifier_block ifa6_notifier; 1328 1329 /* 1330 * The dynamic ps timeout configured from user space via WEXT - 1331 * this will override whatever chosen by mac80211 internally. 1332 */ 1333 int dynamic_ps_forced_timeout; 1334 1335 int user_power_level; /* in dBm, for all interfaces */ 1336 1337 enum ieee80211_smps_mode smps_mode; 1338 1339 struct work_struct restart_work; 1340 1341 #ifdef CONFIG_MAC80211_DEBUGFS 1342 struct local_debugfsdentries { 1343 struct dentry *rcdir; 1344 struct dentry *keys; 1345 } debugfs; 1346 #endif 1347 1348 /* 1349 * Remain-on-channel support 1350 */ 1351 struct list_head roc_list; 1352 struct work_struct hw_roc_start, hw_roc_done; 1353 unsigned long hw_roc_start_time; 1354 u64 roc_cookie_counter; 1355 1356 struct idr ack_status_frames; 1357 spinlock_t ack_status_lock; 1358 1359 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1360 1361 struct napi_struct *napi; 1362 1363 /* virtual monitor interface */ 1364 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1365 struct cfg80211_chan_def monitor_chandef; 1366 1367 /* extended capabilities provided by mac80211 */ 1368 u8 ext_capa[8]; 1369 }; 1370 1371 static inline struct ieee80211_sub_if_data * 1372 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1373 { 1374 return netdev_priv(dev); 1375 } 1376 1377 static inline struct ieee80211_sub_if_data * 1378 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1379 { 1380 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1381 } 1382 1383 /* this struct represents 802.11n's RA/TID combination */ 1384 struct ieee80211_ra_tid { 1385 u8 ra[ETH_ALEN]; 1386 u16 tid; 1387 }; 1388 1389 /* this struct holds the value parsing from channel switch IE */ 1390 struct ieee80211_csa_ie { 1391 struct cfg80211_chan_def chandef; 1392 u8 mode; 1393 u8 count; 1394 u8 ttl; 1395 u16 pre_value; 1396 }; 1397 1398 /* Parsed Information Elements */ 1399 struct ieee802_11_elems { 1400 const u8 *ie_start; 1401 size_t total_len; 1402 1403 /* pointers to IEs */ 1404 const struct ieee80211_tdls_lnkie *lnk_id; 1405 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1406 const u8 *ext_capab; 1407 const u8 *ssid; 1408 const u8 *supp_rates; 1409 const u8 *ds_params; 1410 const struct ieee80211_tim_ie *tim; 1411 const u8 *challenge; 1412 const u8 *rsn; 1413 const u8 *erp_info; 1414 const u8 *ext_supp_rates; 1415 const u8 *wmm_info; 1416 const u8 *wmm_param; 1417 const struct ieee80211_ht_cap *ht_cap_elem; 1418 const struct ieee80211_ht_operation *ht_operation; 1419 const struct ieee80211_vht_cap *vht_cap_elem; 1420 const struct ieee80211_vht_operation *vht_operation; 1421 const struct ieee80211_meshconf_ie *mesh_config; 1422 const u8 *mesh_id; 1423 const u8 *peering; 1424 const __le16 *awake_window; 1425 const u8 *preq; 1426 const u8 *prep; 1427 const u8 *perr; 1428 const struct ieee80211_rann_ie *rann; 1429 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1430 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1431 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1432 const u8 *country_elem; 1433 const u8 *pwr_constr_elem; 1434 const u8 *cisco_dtpc_elem; 1435 const struct ieee80211_timeout_interval_ie *timeout_int; 1436 const u8 *opmode_notif; 1437 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1438 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1439 1440 /* length of them, respectively */ 1441 u8 ext_capab_len; 1442 u8 ssid_len; 1443 u8 supp_rates_len; 1444 u8 tim_len; 1445 u8 challenge_len; 1446 u8 rsn_len; 1447 u8 ext_supp_rates_len; 1448 u8 wmm_info_len; 1449 u8 wmm_param_len; 1450 u8 mesh_id_len; 1451 u8 peering_len; 1452 u8 preq_len; 1453 u8 prep_len; 1454 u8 perr_len; 1455 u8 country_elem_len; 1456 1457 /* whether a parse error occurred while retrieving these elements */ 1458 bool parse_error; 1459 }; 1460 1461 static inline struct ieee80211_local *hw_to_local( 1462 struct ieee80211_hw *hw) 1463 { 1464 return container_of(hw, struct ieee80211_local, hw); 1465 } 1466 1467 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1468 { 1469 return container_of(txq, struct txq_info, txq); 1470 } 1471 1472 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1473 { 1474 return ether_addr_equal(raddr, addr) || 1475 is_broadcast_ether_addr(raddr); 1476 } 1477 1478 static inline bool 1479 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1480 { 1481 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1482 status->flag & RX_FLAG_MACTIME_END); 1483 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1484 } 1485 1486 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1487 struct ieee80211_rx_status *status, 1488 unsigned int mpdu_len, 1489 unsigned int mpdu_offset); 1490 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1491 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1492 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1493 u32 changed); 1494 void ieee80211_configure_filter(struct ieee80211_local *local); 1495 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1496 1497 /* STA code */ 1498 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1499 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1500 struct cfg80211_auth_request *req); 1501 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1502 struct cfg80211_assoc_request *req); 1503 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1504 struct cfg80211_deauth_request *req); 1505 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1506 struct cfg80211_disassoc_request *req); 1507 void ieee80211_send_pspoll(struct ieee80211_local *local, 1508 struct ieee80211_sub_if_data *sdata); 1509 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1510 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1511 int ieee80211_max_network_latency(struct notifier_block *nb, 1512 unsigned long data, void *dummy); 1513 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1514 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1515 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1516 struct sk_buff *skb); 1517 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1518 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1519 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1520 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1521 __le16 fc, bool acked); 1522 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1523 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1524 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1525 1526 /* IBSS code */ 1527 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1528 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1529 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1530 const u8 *bssid, const u8 *addr, u32 supp_rates); 1531 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1532 struct cfg80211_ibss_params *params); 1533 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1534 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1535 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1536 struct sk_buff *skb); 1537 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1538 struct cfg80211_csa_settings *csa_settings); 1539 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1541 1542 /* OCB code */ 1543 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1544 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1545 const u8 *bssid, const u8 *addr, u32 supp_rates); 1546 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1547 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1548 struct ocb_setup *setup); 1549 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1550 1551 /* mesh code */ 1552 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1553 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1554 struct sk_buff *skb); 1555 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1556 struct cfg80211_csa_settings *csa_settings); 1557 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1558 1559 /* scan/BSS handling */ 1560 void ieee80211_scan_work(struct work_struct *work); 1561 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1562 const u8 *ssid, u8 ssid_len, 1563 struct ieee80211_channel **channels, 1564 unsigned int n_channels, 1565 enum nl80211_bss_scan_width scan_width); 1566 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1567 struct cfg80211_scan_request *req); 1568 void ieee80211_scan_cancel(struct ieee80211_local *local); 1569 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1570 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1571 1572 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1573 struct ieee80211_bss * 1574 ieee80211_bss_info_update(struct ieee80211_local *local, 1575 struct ieee80211_rx_status *rx_status, 1576 struct ieee80211_mgmt *mgmt, 1577 size_t len, 1578 struct ieee802_11_elems *elems, 1579 struct ieee80211_channel *channel); 1580 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1581 struct ieee80211_bss *bss); 1582 1583 /* scheduled scan handling */ 1584 int 1585 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1586 struct cfg80211_sched_scan_request *req); 1587 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1588 struct cfg80211_sched_scan_request *req); 1589 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1590 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1591 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1592 1593 /* off-channel helpers */ 1594 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1595 void ieee80211_offchannel_return(struct ieee80211_local *local); 1596 void ieee80211_roc_setup(struct ieee80211_local *local); 1597 void ieee80211_start_next_roc(struct ieee80211_local *local); 1598 void ieee80211_roc_purge(struct ieee80211_local *local, 1599 struct ieee80211_sub_if_data *sdata); 1600 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1601 void ieee80211_sw_roc_work(struct work_struct *work); 1602 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1603 1604 /* channel switch handling */ 1605 void ieee80211_csa_finalize_work(struct work_struct *work); 1606 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1607 struct cfg80211_csa_settings *params); 1608 1609 /* interface handling */ 1610 int ieee80211_iface_init(void); 1611 void ieee80211_iface_exit(void); 1612 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1613 unsigned char name_assign_type, 1614 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1615 struct vif_params *params); 1616 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1617 enum nl80211_iftype type); 1618 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1619 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1620 u32 ieee80211_idle_off(struct ieee80211_local *local); 1621 void ieee80211_recalc_idle(struct ieee80211_local *local); 1622 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1623 const int offset); 1624 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1625 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1626 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1627 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1628 1629 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1630 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1631 bool update_bss); 1632 1633 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1634 { 1635 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1636 } 1637 1638 /* tx handling */ 1639 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1640 void ieee80211_tx_pending(unsigned long data); 1641 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1642 struct net_device *dev); 1643 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1644 struct net_device *dev); 1645 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1646 struct net_device *dev, 1647 u32 info_flags); 1648 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1649 struct sk_buff_head *skbs); 1650 struct sk_buff * 1651 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1652 struct sk_buff *skb, u32 info_flags); 1653 1654 /* HT */ 1655 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1656 struct ieee80211_sta_ht_cap *ht_cap); 1657 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1658 struct ieee80211_supported_band *sband, 1659 const struct ieee80211_ht_cap *ht_cap_ie, 1660 struct sta_info *sta); 1661 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1662 const u8 *da, u16 tid, 1663 u16 initiator, u16 reason_code); 1664 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1665 enum ieee80211_smps_mode smps, const u8 *da, 1666 const u8 *bssid); 1667 void ieee80211_request_smps_ap_work(struct work_struct *work); 1668 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1669 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1670 enum ieee80211_smps_mode smps_mode_new); 1671 1672 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1673 u16 initiator, u16 reason, bool stop); 1674 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1675 u16 initiator, u16 reason, bool stop); 1676 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1677 u8 dialog_token, u16 timeout, 1678 u16 start_seq_num, u16 ba_policy, u16 tid, 1679 u16 buf_size, bool tx, bool auto_seq); 1680 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1681 enum ieee80211_agg_stop_reason reason); 1682 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1683 struct sta_info *sta, 1684 struct ieee80211_mgmt *mgmt, size_t len); 1685 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1686 struct sta_info *sta, 1687 struct ieee80211_mgmt *mgmt, 1688 size_t len); 1689 void ieee80211_process_addba_request(struct ieee80211_local *local, 1690 struct sta_info *sta, 1691 struct ieee80211_mgmt *mgmt, 1692 size_t len); 1693 1694 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1695 enum ieee80211_agg_stop_reason reason); 1696 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1697 enum ieee80211_agg_stop_reason reason); 1698 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1699 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1700 void ieee80211_ba_session_work(struct work_struct *work); 1701 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1702 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1703 1704 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1705 1706 /* VHT */ 1707 void 1708 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1709 struct ieee80211_supported_band *sband, 1710 const struct ieee80211_vht_cap *vht_cap_ie, 1711 struct sta_info *sta); 1712 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1713 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1714 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1715 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1716 struct sta_info *sta, u8 opmode, 1717 enum ieee80211_band band, bool nss_only); 1718 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1719 struct sta_info *sta, u8 opmode, 1720 enum ieee80211_band band, bool nss_only); 1721 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1722 struct ieee80211_sta_vht_cap *vht_cap); 1723 1724 /* Spectrum management */ 1725 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1726 struct ieee80211_mgmt *mgmt, 1727 size_t len); 1728 /** 1729 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1730 * @sdata: the sdata of the interface which has received the frame 1731 * @elems: parsed 802.11 elements received with the frame 1732 * @current_band: indicates the current band 1733 * @sta_flags: contains information about own capabilities and restrictions 1734 * to decide which channel switch announcements can be accepted. Only the 1735 * following subset of &enum ieee80211_sta_flags are evaluated: 1736 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1737 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1738 * %IEEE80211_STA_DISABLE_160MHZ. 1739 * @bssid: the currently connected bssid (for reporting) 1740 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1741 All of them will be filled with if success only. 1742 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1743 */ 1744 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1745 struct ieee802_11_elems *elems, 1746 enum ieee80211_band current_band, 1747 u32 sta_flags, u8 *bssid, 1748 struct ieee80211_csa_ie *csa_ie); 1749 1750 /* Suspend/resume and hw reconfiguration */ 1751 int ieee80211_reconfig(struct ieee80211_local *local); 1752 void ieee80211_stop_device(struct ieee80211_local *local); 1753 1754 int __ieee80211_suspend(struct ieee80211_hw *hw, 1755 struct cfg80211_wowlan *wowlan); 1756 1757 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1758 { 1759 struct ieee80211_local *local = hw_to_local(hw); 1760 1761 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1762 !test_bit(SCAN_COMPLETED, &local->scanning), 1763 "%s: resume with hardware scan still in progress\n", 1764 wiphy_name(hw->wiphy)); 1765 1766 return ieee80211_reconfig(hw_to_local(hw)); 1767 } 1768 1769 /* utility functions/constants */ 1770 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1771 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1772 enum nl80211_iftype type); 1773 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1774 int rate, int erp, int short_preamble, 1775 int shift); 1776 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1777 struct ieee80211_hdr *hdr, const u8 *tsc, 1778 gfp_t gfp); 1779 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1780 bool bss_notify); 1781 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1782 struct sta_info *sta, struct sk_buff *skb); 1783 1784 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1785 struct sk_buff *skb, int tid, 1786 enum ieee80211_band band); 1787 1788 static inline void 1789 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1790 struct sk_buff *skb, int tid, 1791 enum ieee80211_band band) 1792 { 1793 rcu_read_lock(); 1794 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1795 rcu_read_unlock(); 1796 } 1797 1798 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1799 struct sk_buff *skb, int tid) 1800 { 1801 struct ieee80211_chanctx_conf *chanctx_conf; 1802 1803 rcu_read_lock(); 1804 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1805 if (WARN_ON(!chanctx_conf)) { 1806 rcu_read_unlock(); 1807 kfree_skb(skb); 1808 return; 1809 } 1810 1811 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1812 chanctx_conf->def.chan->band); 1813 rcu_read_unlock(); 1814 } 1815 1816 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1817 struct sk_buff *skb) 1818 { 1819 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1820 ieee80211_tx_skb_tid(sdata, skb, 7); 1821 } 1822 1823 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1824 struct ieee802_11_elems *elems, 1825 u64 filter, u32 crc); 1826 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1827 bool action, 1828 struct ieee802_11_elems *elems) 1829 { 1830 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1831 } 1832 1833 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1834 { 1835 struct sk_buff *tail = skb_peek_tail(frames); 1836 struct ieee80211_rx_status *status; 1837 1838 if (!tail) 1839 return false; 1840 1841 status = IEEE80211_SKB_RXCB(tail); 1842 if (status->flag & RX_FLAG_AMSDU_MORE) 1843 return false; 1844 1845 return true; 1846 } 1847 1848 extern const int ieee802_1d_to_ac[8]; 1849 1850 static inline int ieee80211_ac_from_tid(int tid) 1851 { 1852 return ieee802_1d_to_ac[tid & 7]; 1853 } 1854 1855 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1856 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1857 void ieee80211_dynamic_ps_timer(unsigned long data); 1858 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1859 struct ieee80211_sub_if_data *sdata, 1860 int powersave); 1861 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1862 struct ieee80211_hdr *hdr); 1863 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1864 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1865 1866 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1867 unsigned long queues, 1868 enum queue_stop_reason reason, 1869 bool refcounted); 1870 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1871 struct ieee80211_sub_if_data *sdata, 1872 enum queue_stop_reason reason); 1873 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1874 struct ieee80211_sub_if_data *sdata, 1875 enum queue_stop_reason reason); 1876 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1877 unsigned long queues, 1878 enum queue_stop_reason reason, 1879 bool refcounted); 1880 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1881 enum queue_stop_reason reason, 1882 bool refcounted); 1883 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1884 enum queue_stop_reason reason, 1885 bool refcounted); 1886 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1887 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1888 struct sk_buff *skb); 1889 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1890 struct sk_buff_head *skbs); 1891 void ieee80211_flush_queues(struct ieee80211_local *local, 1892 struct ieee80211_sub_if_data *sdata, bool drop); 1893 void __ieee80211_flush_queues(struct ieee80211_local *local, 1894 struct ieee80211_sub_if_data *sdata, 1895 unsigned int queues, bool drop); 1896 1897 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1898 { 1899 /* 1900 * If quiescing is set, we are racing with __ieee80211_suspend. 1901 * __ieee80211_suspend flushes the workers after setting quiescing, 1902 * and we check quiescing / suspended before enqueing new workers. 1903 * We should abort the worker to avoid the races below. 1904 */ 1905 if (local->quiescing) 1906 return false; 1907 1908 /* 1909 * We might already be suspended if the following scenario occurs: 1910 * __ieee80211_suspend Control path 1911 * 1912 * if (local->quiescing) 1913 * return; 1914 * local->quiescing = true; 1915 * flush_workqueue(); 1916 * queue_work(...); 1917 * local->suspended = true; 1918 * local->quiescing = false; 1919 * worker starts running... 1920 */ 1921 if (local->suspended) 1922 return false; 1923 1924 return true; 1925 } 1926 1927 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1928 struct sta_info *sta, 1929 struct txq_info *txq, int tid); 1930 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1931 u16 transaction, u16 auth_alg, u16 status, 1932 const u8 *extra, size_t extra_len, const u8 *bssid, 1933 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1934 u32 tx_flags); 1935 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1936 const u8 *bssid, u16 stype, u16 reason, 1937 bool send_frame, u8 *frame_buf); 1938 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1939 size_t buffer_len, 1940 struct ieee80211_scan_ies *ie_desc, 1941 const u8 *ie, size_t ie_len, 1942 u8 bands_used, u32 *rate_masks, 1943 struct cfg80211_chan_def *chandef); 1944 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1945 const u8 *src, const u8 *dst, 1946 u32 ratemask, 1947 struct ieee80211_channel *chan, 1948 const u8 *ssid, size_t ssid_len, 1949 const u8 *ie, size_t ie_len, 1950 bool directed); 1951 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1952 const u8 *src, const u8 *dst, 1953 const u8 *ssid, size_t ssid_len, 1954 const u8 *ie, size_t ie_len, 1955 u32 ratemask, bool directed, u32 tx_flags, 1956 struct ieee80211_channel *channel, bool scan); 1957 1958 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1959 struct ieee802_11_elems *elems, 1960 enum ieee80211_band band, u32 *basic_rates); 1961 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1962 enum ieee80211_smps_mode smps_mode); 1963 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1964 enum ieee80211_smps_mode smps_mode); 1965 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1966 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1967 1968 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1969 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1970 u16 cap); 1971 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1972 const struct cfg80211_chan_def *chandef, 1973 u16 prot_mode); 1974 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1975 u32 cap); 1976 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1977 const struct cfg80211_chan_def *chandef); 1978 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1979 const struct ieee80211_supported_band *sband, 1980 const u8 *srates, int srates_len, u32 *rates); 1981 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1982 struct sk_buff *skb, bool need_basic, 1983 enum ieee80211_band band); 1984 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1985 struct sk_buff *skb, bool need_basic, 1986 enum ieee80211_band band); 1987 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1988 1989 /* channel management */ 1990 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1991 const struct ieee80211_ht_operation *ht_oper, 1992 struct cfg80211_chan_def *chandef); 1993 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1994 const struct ieee80211_vht_operation *oper, 1995 struct cfg80211_chan_def *chandef); 1996 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1997 1998 int __must_check 1999 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2000 const struct cfg80211_chan_def *chandef, 2001 enum ieee80211_chanctx_mode mode); 2002 int __must_check 2003 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2004 const struct cfg80211_chan_def *chandef, 2005 enum ieee80211_chanctx_mode mode, 2006 bool radar_required); 2007 int __must_check 2008 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2009 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2010 2011 int __must_check 2012 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2013 const struct cfg80211_chan_def *chandef, 2014 u32 *changed); 2015 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2016 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2017 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2018 bool clear); 2019 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2020 struct ieee80211_chanctx *ctx); 2021 2022 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2023 struct ieee80211_chanctx *chanctx); 2024 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2025 struct ieee80211_chanctx *ctx); 2026 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2027 2028 void ieee80211_dfs_cac_timer(unsigned long data); 2029 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2030 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2031 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2032 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2033 struct cfg80211_csa_settings *csa_settings); 2034 2035 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2036 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2037 const struct ieee80211_cipher_scheme * 2038 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2039 enum nl80211_iftype iftype); 2040 int ieee80211_cs_headroom(struct ieee80211_local *local, 2041 struct cfg80211_crypto_settings *crypto, 2042 enum nl80211_iftype iftype); 2043 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2044 struct ieee80211_sub_if_data *sdata); 2045 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2046 const struct cfg80211_chan_def *chandef, 2047 enum ieee80211_chanctx_mode chanmode, 2048 u8 radar_detect); 2049 int ieee80211_max_num_channels(struct ieee80211_local *local); 2050 2051 /* TDLS */ 2052 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2053 const u8 *peer, u8 action_code, u8 dialog_token, 2054 u16 status_code, u32 peer_capability, 2055 bool initiator, const u8 *extra_ies, 2056 size_t extra_ies_len); 2057 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2058 const u8 *peer, enum nl80211_tdls_operation oper); 2059 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2060 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2061 const u8 *addr, u8 oper_class, 2062 struct cfg80211_chan_def *chandef); 2063 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2064 struct net_device *dev, 2065 const u8 *addr); 2066 void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2067 struct sk_buff *skb); 2068 2069 extern const struct ethtool_ops ieee80211_ethtool_ops; 2070 2071 #ifdef CONFIG_MAC80211_NOINLINE 2072 #define debug_noinline noinline 2073 #else 2074 #define debug_noinline 2075 #endif 2076 2077 #endif /* IEEE80211_I_H */ 2078