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 ccmp; /* Whether fragments were encrypted with CCMP */ 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 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability 720 */ 721 enum ieee80211_sub_if_data_flags { 722 IEEE80211_SDATA_ALLMULTI = BIT(0), 723 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 724 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 725 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 726 IEEE80211_SDATA_IN_DRIVER = BIT(5), 727 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6), 728 }; 729 730 /** 731 * enum ieee80211_sdata_state_bits - virtual interface state bits 732 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 733 * mirrors netif_running() but is separate for interface type 734 * change handling while the interface is up 735 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 736 * mode, so queues are stopped 737 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 738 * to offchannel, reset when offchannel returns 739 */ 740 enum ieee80211_sdata_state_bits { 741 SDATA_STATE_RUNNING, 742 SDATA_STATE_OFFCHANNEL, 743 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 744 }; 745 746 /** 747 * enum ieee80211_chanctx_mode - channel context configuration mode 748 * 749 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 750 * multiple interfaces 751 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 752 * only by a single interface. This can be used for example for 753 * non-fixed channel IBSS. 754 */ 755 enum ieee80211_chanctx_mode { 756 IEEE80211_CHANCTX_SHARED, 757 IEEE80211_CHANCTX_EXCLUSIVE 758 }; 759 760 /** 761 * enum ieee80211_chanctx_replace_state - channel context replacement state 762 * 763 * This is used for channel context in-place reservations that require channel 764 * context switch/swap. 765 * 766 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 767 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 768 * by a (not yet registered) channel context pointed by %replace_ctx. 769 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 770 * replaces an existing channel context pointed to by %replace_ctx. 771 */ 772 enum ieee80211_chanctx_replace_state { 773 IEEE80211_CHANCTX_REPLACE_NONE, 774 IEEE80211_CHANCTX_WILL_BE_REPLACED, 775 IEEE80211_CHANCTX_REPLACES_OTHER, 776 }; 777 778 struct ieee80211_chanctx { 779 struct list_head list; 780 struct rcu_head rcu_head; 781 782 struct list_head assigned_vifs; 783 struct list_head reserved_vifs; 784 785 enum ieee80211_chanctx_replace_state replace_state; 786 struct ieee80211_chanctx *replace_ctx; 787 788 enum ieee80211_chanctx_mode mode; 789 bool driver_present; 790 791 struct ieee80211_chanctx_conf conf; 792 }; 793 794 struct mac80211_qos_map { 795 struct cfg80211_qos_map qos_map; 796 struct rcu_head rcu_head; 797 }; 798 799 enum txq_info_flags { 800 IEEE80211_TXQ_STOP, 801 IEEE80211_TXQ_AMPDU, 802 }; 803 804 struct txq_info { 805 struct sk_buff_head queue; 806 unsigned long flags; 807 808 /* keep last! */ 809 struct ieee80211_txq txq; 810 }; 811 812 struct ieee80211_sub_if_data { 813 struct list_head list; 814 815 struct wireless_dev wdev; 816 817 /* keys */ 818 struct list_head key_list; 819 820 /* count for keys needing tailroom space allocation */ 821 int crypto_tx_tailroom_needed_cnt; 822 int crypto_tx_tailroom_pending_dec; 823 struct delayed_work dec_tailroom_needed_wk; 824 825 struct net_device *dev; 826 struct ieee80211_local *local; 827 828 unsigned int flags; 829 830 unsigned long state; 831 832 char name[IFNAMSIZ]; 833 834 /* Fragment table for host-based reassembly */ 835 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 836 unsigned int fragment_next; 837 838 /* TID bitmap for NoAck policy */ 839 u16 noack_map; 840 841 /* bit field of ACM bits (BIT(802.1D tag)) */ 842 u8 wmm_acm; 843 844 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 845 struct ieee80211_key __rcu *default_unicast_key; 846 struct ieee80211_key __rcu *default_multicast_key; 847 struct ieee80211_key __rcu *default_mgmt_key; 848 849 u16 sequence_number; 850 __be16 control_port_protocol; 851 bool control_port_no_encrypt; 852 int encrypt_headroom; 853 854 atomic_t txqs_len[IEEE80211_NUM_ACS]; 855 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 856 struct mac80211_qos_map __rcu *qos_map; 857 858 struct work_struct csa_finalize_work; 859 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 860 struct cfg80211_chan_def csa_chandef; 861 862 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 863 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 864 865 /* context reservation -- protected with chanctx_mtx */ 866 struct ieee80211_chanctx *reserved_chanctx; 867 struct cfg80211_chan_def reserved_chandef; 868 bool reserved_radar_required; 869 bool reserved_ready; 870 871 /* used to reconfigure hardware SM PS */ 872 struct work_struct recalc_smps; 873 874 struct work_struct work; 875 struct sk_buff_head skb_queue; 876 877 u8 needed_rx_chains; 878 enum ieee80211_smps_mode smps_mode; 879 880 int user_power_level; /* in dBm */ 881 int ap_power_level; /* in dBm */ 882 883 bool radar_required; 884 struct delayed_work dfs_cac_timer_work; 885 886 /* 887 * AP this belongs to: self in AP mode and 888 * corresponding AP in VLAN mode, NULL for 889 * all others (might be needed later in IBSS) 890 */ 891 struct ieee80211_if_ap *bss; 892 893 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 894 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 895 896 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 897 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 898 899 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS]; 900 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX]; 901 902 union { 903 struct ieee80211_if_ap ap; 904 struct ieee80211_if_wds wds; 905 struct ieee80211_if_vlan vlan; 906 struct ieee80211_if_managed mgd; 907 struct ieee80211_if_ibss ibss; 908 struct ieee80211_if_mesh mesh; 909 struct ieee80211_if_ocb ocb; 910 u32 mntr_flags; 911 } u; 912 913 #ifdef CONFIG_MAC80211_DEBUGFS 914 struct { 915 struct dentry *subdir_stations; 916 struct dentry *default_unicast_key; 917 struct dentry *default_multicast_key; 918 struct dentry *default_mgmt_key; 919 } debugfs; 920 #endif 921 922 /* must be last, dynamically sized area in this! */ 923 struct ieee80211_vif vif; 924 }; 925 926 static inline 927 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 928 { 929 return container_of(p, struct ieee80211_sub_if_data, vif); 930 } 931 932 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 933 __acquires(&sdata->wdev.mtx) 934 { 935 mutex_lock(&sdata->wdev.mtx); 936 __acquire(&sdata->wdev.mtx); 937 } 938 939 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 940 __releases(&sdata->wdev.mtx) 941 { 942 mutex_unlock(&sdata->wdev.mtx); 943 __release(&sdata->wdev.mtx); 944 } 945 946 #define sdata_dereference(p, sdata) \ 947 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 948 949 static inline void 950 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 951 { 952 lockdep_assert_held(&sdata->wdev.mtx); 953 } 954 955 static inline enum ieee80211_band 956 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 957 { 958 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 959 struct ieee80211_chanctx_conf *chanctx_conf; 960 961 rcu_read_lock(); 962 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 963 if (!WARN_ON(!chanctx_conf)) 964 band = chanctx_conf->def.chan->band; 965 rcu_read_unlock(); 966 967 return band; 968 } 969 970 static inline int 971 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 972 { 973 switch (chandef->width) { 974 case NL80211_CHAN_WIDTH_5: 975 return 2; 976 case NL80211_CHAN_WIDTH_10: 977 return 1; 978 default: 979 return 0; 980 } 981 } 982 983 static inline int 984 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 985 { 986 struct ieee80211_chanctx_conf *chanctx_conf; 987 int shift = 0; 988 989 rcu_read_lock(); 990 chanctx_conf = rcu_dereference(vif->chanctx_conf); 991 if (chanctx_conf) 992 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 993 rcu_read_unlock(); 994 995 return shift; 996 } 997 998 struct ieee80211_rx_agg { 999 u8 addr[ETH_ALEN]; 1000 u16 tid; 1001 }; 1002 1003 enum sdata_queue_type { 1004 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1005 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1006 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1007 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1008 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1009 }; 1010 1011 enum { 1012 IEEE80211_RX_MSG = 1, 1013 IEEE80211_TX_STATUS_MSG = 2, 1014 }; 1015 1016 enum queue_stop_reason { 1017 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1018 IEEE80211_QUEUE_STOP_REASON_PS, 1019 IEEE80211_QUEUE_STOP_REASON_CSA, 1020 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1021 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1022 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1023 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1024 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1025 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1026 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1027 1028 IEEE80211_QUEUE_STOP_REASONS, 1029 }; 1030 1031 #ifdef CONFIG_MAC80211_LEDS 1032 struct tpt_led_trigger { 1033 char name[32]; 1034 const struct ieee80211_tpt_blink *blink_table; 1035 unsigned int blink_table_len; 1036 struct timer_list timer; 1037 unsigned long prev_traffic; 1038 unsigned long tx_bytes, rx_bytes; 1039 unsigned int active, want; 1040 bool running; 1041 }; 1042 #endif 1043 1044 /** 1045 * mac80211 scan flags - currently active scan mode 1046 * 1047 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1048 * well be on the operating channel 1049 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1050 * determine if we are on the operating channel or not 1051 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1052 * channel. This should not interrupt normal traffic. 1053 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1054 * that the scan completed. 1055 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1056 * a scan complete for an aborted scan. 1057 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1058 * cancelled. 1059 */ 1060 enum { 1061 SCAN_SW_SCANNING, 1062 SCAN_HW_SCANNING, 1063 SCAN_ONCHANNEL_SCANNING, 1064 SCAN_COMPLETED, 1065 SCAN_ABORTED, 1066 SCAN_HW_CANCELLED, 1067 }; 1068 1069 /** 1070 * enum mac80211_scan_state - scan state machine states 1071 * 1072 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1073 * determines if we should keep on scanning or switch back to the 1074 * operating channel 1075 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1076 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1077 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1078 * send out data 1079 * @SCAN_RESUME: Resume the scan and scan the next channel 1080 * @SCAN_ABORT: Abort the scan and go back to operating channel 1081 */ 1082 enum mac80211_scan_state { 1083 SCAN_DECISION, 1084 SCAN_SET_CHANNEL, 1085 SCAN_SEND_PROBE, 1086 SCAN_SUSPEND, 1087 SCAN_RESUME, 1088 SCAN_ABORT, 1089 }; 1090 1091 struct ieee80211_local { 1092 /* embed the driver visible part. 1093 * don't cast (use the static inlines below), but we keep 1094 * it first anyway so they become a no-op */ 1095 struct ieee80211_hw hw; 1096 1097 const struct ieee80211_ops *ops; 1098 1099 /* 1100 * private workqueue to mac80211. mac80211 makes this accessible 1101 * via ieee80211_queue_work() 1102 */ 1103 struct workqueue_struct *workqueue; 1104 1105 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1106 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1107 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1108 spinlock_t queue_stop_reason_lock; 1109 1110 int open_count; 1111 int monitors, cooked_mntrs; 1112 /* number of interfaces with corresponding FIF_ flags */ 1113 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1114 fif_probe_req; 1115 int probe_req_reg; 1116 unsigned int filter_flags; /* FIF_* */ 1117 1118 bool wiphy_ciphers_allocated; 1119 1120 bool use_chanctx; 1121 1122 /* protects the aggregated multicast list and filter calls */ 1123 spinlock_t filter_lock; 1124 1125 /* used for uploading changed mc list */ 1126 struct work_struct reconfig_filter; 1127 1128 /* aggregated multicast list */ 1129 struct netdev_hw_addr_list mc_list; 1130 1131 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1132 1133 /* 1134 * suspended is true if we finished all the suspend _and_ we have 1135 * not yet come up from resume. This is to be used by mac80211 1136 * to ensure driver sanity during suspend and mac80211's own 1137 * sanity. It can eventually be used for WoW as well. 1138 */ 1139 bool suspended; 1140 1141 /* 1142 * Resuming is true while suspended, but when we're reprogramming the 1143 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1144 * again even though some other parts of the stack are still suspended 1145 * and we still drop received frames to avoid waking the stack. 1146 */ 1147 bool resuming; 1148 1149 /* 1150 * quiescing is true during the suspend process _only_ to 1151 * ease timer cancelling etc. 1152 */ 1153 bool quiescing; 1154 1155 /* device is started */ 1156 bool started; 1157 1158 /* device is during a HW reconfig */ 1159 bool in_reconfig; 1160 1161 /* wowlan is enabled -- don't reconfig on resume */ 1162 bool wowlan; 1163 1164 struct work_struct radar_detected_work; 1165 1166 /* number of RX chains the hardware has */ 1167 u8 rx_chains; 1168 1169 int tx_headroom; /* required headroom for hardware/radiotap */ 1170 1171 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1172 * added to skb_queue will be processed, but frames in 1173 * skb_queue_unreliable may be dropped if the total length of these 1174 * queues increases over the limit. */ 1175 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1176 struct tasklet_struct tasklet; 1177 struct sk_buff_head skb_queue; 1178 struct sk_buff_head skb_queue_unreliable; 1179 1180 spinlock_t rx_path_lock; 1181 1182 /* Station data */ 1183 /* 1184 * The mutex only protects the list, hash table and 1185 * counter, reads are done with RCU. 1186 */ 1187 struct mutex sta_mtx; 1188 spinlock_t tim_lock; 1189 unsigned long num_sta; 1190 struct list_head sta_list; 1191 struct rhashtable sta_hash; 1192 struct timer_list sta_cleanup; 1193 int sta_generation; 1194 1195 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1196 struct tasklet_struct tx_pending_tasklet; 1197 1198 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1199 1200 /* number of interfaces with allmulti RX */ 1201 atomic_t iff_allmultis; 1202 1203 struct rate_control_ref *rate_ctrl; 1204 1205 struct crypto_cipher *wep_tx_tfm; 1206 struct crypto_cipher *wep_rx_tfm; 1207 u32 wep_iv; 1208 1209 /* see iface.c */ 1210 struct list_head interfaces; 1211 struct mutex iflist_mtx; 1212 1213 /* 1214 * Key mutex, protects sdata's key_list and sta_info's 1215 * key pointers (write access, they're RCU.) 1216 */ 1217 struct mutex key_mtx; 1218 1219 /* mutex for scan and work locking */ 1220 struct mutex mtx; 1221 1222 /* Scanning and BSS list */ 1223 unsigned long scanning; 1224 struct cfg80211_ssid scan_ssid; 1225 struct cfg80211_scan_request *int_scan_req; 1226 struct cfg80211_scan_request __rcu *scan_req; 1227 struct ieee80211_scan_request *hw_scan_req; 1228 struct cfg80211_chan_def scan_chandef; 1229 enum ieee80211_band hw_scan_band; 1230 int scan_channel_idx; 1231 int scan_ies_len; 1232 int hw_scan_ies_bufsize; 1233 1234 struct work_struct sched_scan_stopped_work; 1235 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1236 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1237 u8 scan_addr[ETH_ALEN]; 1238 1239 unsigned long leave_oper_channel_time; 1240 enum mac80211_scan_state next_scan_state; 1241 struct delayed_work scan_work; 1242 struct ieee80211_sub_if_data __rcu *scan_sdata; 1243 /* For backward compatibility only -- do not use */ 1244 struct cfg80211_chan_def _oper_chandef; 1245 1246 /* Temporary remain-on-channel for off-channel operations */ 1247 struct ieee80211_channel *tmp_channel; 1248 1249 /* channel contexts */ 1250 struct list_head chanctx_list; 1251 struct mutex chanctx_mtx; 1252 1253 #ifdef CONFIG_MAC80211_LEDS 1254 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1255 struct led_trigger tpt_led; 1256 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1257 atomic_t radio_led_active, tpt_led_active; 1258 struct tpt_led_trigger *tpt_led_trigger; 1259 #endif 1260 1261 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1262 /* SNMP counters */ 1263 /* dot11CountersTable */ 1264 u32 dot11TransmittedFragmentCount; 1265 u32 dot11MulticastTransmittedFrameCount; 1266 u32 dot11FailedCount; 1267 u32 dot11RetryCount; 1268 u32 dot11MultipleRetryCount; 1269 u32 dot11FrameDuplicateCount; 1270 u32 dot11ReceivedFragmentCount; 1271 u32 dot11MulticastReceivedFrameCount; 1272 u32 dot11TransmittedFrameCount; 1273 1274 /* TX/RX handler statistics */ 1275 unsigned int tx_handlers_drop; 1276 unsigned int tx_handlers_queued; 1277 unsigned int tx_handlers_drop_wep; 1278 unsigned int tx_handlers_drop_not_assoc; 1279 unsigned int tx_handlers_drop_unauth_port; 1280 unsigned int rx_handlers_drop; 1281 unsigned int rx_handlers_queued; 1282 unsigned int rx_handlers_drop_nullfunc; 1283 unsigned int rx_handlers_drop_defrag; 1284 unsigned int tx_expand_skb_head; 1285 unsigned int tx_expand_skb_head_cloned; 1286 unsigned int rx_expand_skb_head_defrag; 1287 unsigned int rx_handlers_fragments; 1288 unsigned int tx_status_drop; 1289 #define I802_DEBUG_INC(c) (c)++ 1290 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1291 #define I802_DEBUG_INC(c) do { } while (0) 1292 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1293 1294 1295 int total_ps_buffered; /* total number of all buffered unicast and 1296 * multicast packets for power saving stations 1297 */ 1298 1299 bool pspolling; 1300 bool offchannel_ps_enabled; 1301 /* 1302 * PS can only be enabled when we have exactly one managed 1303 * interface (and monitors) in PS, this then points there. 1304 */ 1305 struct ieee80211_sub_if_data *ps_sdata; 1306 struct work_struct dynamic_ps_enable_work; 1307 struct work_struct dynamic_ps_disable_work; 1308 struct timer_list dynamic_ps_timer; 1309 struct notifier_block ifa_notifier; 1310 struct notifier_block ifa6_notifier; 1311 1312 /* 1313 * The dynamic ps timeout configured from user space via WEXT - 1314 * this will override whatever chosen by mac80211 internally. 1315 */ 1316 int dynamic_ps_forced_timeout; 1317 1318 int user_power_level; /* in dBm, for all interfaces */ 1319 1320 enum ieee80211_smps_mode smps_mode; 1321 1322 struct work_struct restart_work; 1323 1324 #ifdef CONFIG_MAC80211_DEBUGFS 1325 struct local_debugfsdentries { 1326 struct dentry *rcdir; 1327 struct dentry *keys; 1328 } debugfs; 1329 #endif 1330 1331 /* 1332 * Remain-on-channel support 1333 */ 1334 struct delayed_work roc_work; 1335 struct list_head roc_list; 1336 struct work_struct hw_roc_start, hw_roc_done; 1337 unsigned long hw_roc_start_time; 1338 u64 roc_cookie_counter; 1339 1340 struct idr ack_status_frames; 1341 spinlock_t ack_status_lock; 1342 1343 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1344 1345 /* virtual monitor interface */ 1346 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1347 struct cfg80211_chan_def monitor_chandef; 1348 1349 /* extended capabilities provided by mac80211 */ 1350 u8 ext_capa[8]; 1351 1352 /* TDLS channel switch */ 1353 struct work_struct tdls_chsw_work; 1354 struct sk_buff_head skb_queue_tdls_chsw; 1355 }; 1356 1357 static inline struct ieee80211_sub_if_data * 1358 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1359 { 1360 return netdev_priv(dev); 1361 } 1362 1363 static inline struct ieee80211_sub_if_data * 1364 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1365 { 1366 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1367 } 1368 1369 /* this struct represents 802.11n's RA/TID combination */ 1370 struct ieee80211_ra_tid { 1371 u8 ra[ETH_ALEN]; 1372 u16 tid; 1373 }; 1374 1375 /* this struct holds the value parsing from channel switch IE */ 1376 struct ieee80211_csa_ie { 1377 struct cfg80211_chan_def chandef; 1378 u8 mode; 1379 u8 count; 1380 u8 ttl; 1381 u16 pre_value; 1382 }; 1383 1384 /* Parsed Information Elements */ 1385 struct ieee802_11_elems { 1386 const u8 *ie_start; 1387 size_t total_len; 1388 1389 /* pointers to IEs */ 1390 const struct ieee80211_tdls_lnkie *lnk_id; 1391 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1392 const u8 *ext_capab; 1393 const u8 *ssid; 1394 const u8 *supp_rates; 1395 const u8 *ds_params; 1396 const struct ieee80211_tim_ie *tim; 1397 const u8 *challenge; 1398 const u8 *rsn; 1399 const u8 *erp_info; 1400 const u8 *ext_supp_rates; 1401 const u8 *wmm_info; 1402 const u8 *wmm_param; 1403 const struct ieee80211_ht_cap *ht_cap_elem; 1404 const struct ieee80211_ht_operation *ht_operation; 1405 const struct ieee80211_vht_cap *vht_cap_elem; 1406 const struct ieee80211_vht_operation *vht_operation; 1407 const struct ieee80211_meshconf_ie *mesh_config; 1408 const u8 *mesh_id; 1409 const u8 *peering; 1410 const __le16 *awake_window; 1411 const u8 *preq; 1412 const u8 *prep; 1413 const u8 *perr; 1414 const struct ieee80211_rann_ie *rann; 1415 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1416 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1417 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1418 const u8 *country_elem; 1419 const u8 *pwr_constr_elem; 1420 const u8 *cisco_dtpc_elem; 1421 const struct ieee80211_timeout_interval_ie *timeout_int; 1422 const u8 *opmode_notif; 1423 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1424 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1425 1426 /* length of them, respectively */ 1427 u8 ext_capab_len; 1428 u8 ssid_len; 1429 u8 supp_rates_len; 1430 u8 tim_len; 1431 u8 challenge_len; 1432 u8 rsn_len; 1433 u8 ext_supp_rates_len; 1434 u8 wmm_info_len; 1435 u8 wmm_param_len; 1436 u8 mesh_id_len; 1437 u8 peering_len; 1438 u8 preq_len; 1439 u8 prep_len; 1440 u8 perr_len; 1441 u8 country_elem_len; 1442 1443 /* whether a parse error occurred while retrieving these elements */ 1444 bool parse_error; 1445 }; 1446 1447 static inline struct ieee80211_local *hw_to_local( 1448 struct ieee80211_hw *hw) 1449 { 1450 return container_of(hw, struct ieee80211_local, hw); 1451 } 1452 1453 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1454 { 1455 return container_of(txq, struct txq_info, txq); 1456 } 1457 1458 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1459 { 1460 return ether_addr_equal(raddr, addr) || 1461 is_broadcast_ether_addr(raddr); 1462 } 1463 1464 static inline bool 1465 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1466 { 1467 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1468 status->flag & RX_FLAG_MACTIME_END); 1469 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1470 } 1471 1472 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1473 struct ieee80211_rx_status *status, 1474 unsigned int mpdu_len, 1475 unsigned int mpdu_offset); 1476 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1477 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1478 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1479 u32 changed); 1480 void ieee80211_configure_filter(struct ieee80211_local *local); 1481 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1482 1483 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1484 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1485 u64 *cookie, gfp_t gfp); 1486 1487 /* STA code */ 1488 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1489 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1490 struct cfg80211_auth_request *req); 1491 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1492 struct cfg80211_assoc_request *req); 1493 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1494 struct cfg80211_deauth_request *req); 1495 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1496 struct cfg80211_disassoc_request *req); 1497 void ieee80211_send_pspoll(struct ieee80211_local *local, 1498 struct ieee80211_sub_if_data *sdata); 1499 void ieee80211_recalc_ps(struct ieee80211_local *local); 1500 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1501 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1502 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1503 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1504 struct sk_buff *skb); 1505 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1506 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1507 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1508 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1509 __le16 fc, bool acked); 1510 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1511 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1512 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1513 1514 /* IBSS code */ 1515 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1516 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1517 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1518 const u8 *bssid, const u8 *addr, u32 supp_rates); 1519 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1520 struct cfg80211_ibss_params *params); 1521 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1522 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1523 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1524 struct sk_buff *skb); 1525 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1526 struct cfg80211_csa_settings *csa_settings); 1527 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1528 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1529 1530 /* OCB code */ 1531 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1532 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1533 const u8 *bssid, const u8 *addr, u32 supp_rates); 1534 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1535 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1536 struct ocb_setup *setup); 1537 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1538 1539 /* mesh code */ 1540 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1541 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1542 struct sk_buff *skb); 1543 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1544 struct cfg80211_csa_settings *csa_settings); 1545 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1546 1547 /* scan/BSS handling */ 1548 void ieee80211_scan_work(struct work_struct *work); 1549 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1550 const u8 *ssid, u8 ssid_len, 1551 struct ieee80211_channel **channels, 1552 unsigned int n_channels, 1553 enum nl80211_bss_scan_width scan_width); 1554 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1555 struct cfg80211_scan_request *req); 1556 void ieee80211_scan_cancel(struct ieee80211_local *local); 1557 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1558 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1559 1560 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1561 struct ieee80211_bss * 1562 ieee80211_bss_info_update(struct ieee80211_local *local, 1563 struct ieee80211_rx_status *rx_status, 1564 struct ieee80211_mgmt *mgmt, 1565 size_t len, 1566 struct ieee802_11_elems *elems, 1567 struct ieee80211_channel *channel); 1568 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1569 struct ieee80211_bss *bss); 1570 1571 /* scheduled scan handling */ 1572 int 1573 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1574 struct cfg80211_sched_scan_request *req); 1575 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1576 struct cfg80211_sched_scan_request *req); 1577 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1578 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1579 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1580 1581 /* off-channel/mgmt-tx */ 1582 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1583 void ieee80211_offchannel_return(struct ieee80211_local *local); 1584 void ieee80211_roc_setup(struct ieee80211_local *local); 1585 void ieee80211_start_next_roc(struct ieee80211_local *local); 1586 void ieee80211_roc_purge(struct ieee80211_local *local, 1587 struct ieee80211_sub_if_data *sdata); 1588 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1589 struct ieee80211_channel *chan, 1590 unsigned int duration, u64 *cookie); 1591 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1592 struct wireless_dev *wdev, u64 cookie); 1593 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1594 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1595 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1596 struct wireless_dev *wdev, u64 cookie); 1597 1598 /* channel switch handling */ 1599 void ieee80211_csa_finalize_work(struct work_struct *work); 1600 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1601 struct cfg80211_csa_settings *params); 1602 1603 /* interface handling */ 1604 int ieee80211_iface_init(void); 1605 void ieee80211_iface_exit(void); 1606 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1607 unsigned char name_assign_type, 1608 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1609 struct vif_params *params); 1610 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1611 enum nl80211_iftype type); 1612 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1613 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1614 u32 ieee80211_idle_off(struct ieee80211_local *local); 1615 void ieee80211_recalc_idle(struct ieee80211_local *local); 1616 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1617 const int offset); 1618 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1619 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1620 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1621 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1622 1623 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1624 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1625 bool update_bss); 1626 1627 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1628 { 1629 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1630 } 1631 1632 /* tx handling */ 1633 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1634 void ieee80211_tx_pending(unsigned long data); 1635 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1636 struct net_device *dev); 1637 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1638 struct net_device *dev); 1639 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1640 struct net_device *dev, 1641 u32 info_flags); 1642 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1643 struct sk_buff_head *skbs); 1644 struct sk_buff * 1645 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1646 struct sk_buff *skb, u32 info_flags); 1647 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1648 struct ieee80211_supported_band *sband, 1649 int retry_count, int shift, bool send_to_cooked); 1650 1651 void ieee80211_check_fast_xmit(struct sta_info *sta); 1652 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1653 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1654 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1655 1656 /* HT */ 1657 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1658 struct ieee80211_sta_ht_cap *ht_cap); 1659 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1660 struct ieee80211_supported_band *sband, 1661 const struct ieee80211_ht_cap *ht_cap_ie, 1662 struct sta_info *sta); 1663 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1664 const u8 *da, u16 tid, 1665 u16 initiator, u16 reason_code); 1666 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1667 enum ieee80211_smps_mode smps, const u8 *da, 1668 const u8 *bssid); 1669 void ieee80211_request_smps_ap_work(struct work_struct *work); 1670 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1671 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1672 enum ieee80211_smps_mode smps_mode_new); 1673 1674 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1675 u16 initiator, u16 reason, bool stop); 1676 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1677 u16 initiator, u16 reason, bool stop); 1678 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1679 u8 dialog_token, u16 timeout, 1680 u16 start_seq_num, u16 ba_policy, u16 tid, 1681 u16 buf_size, bool tx, bool auto_seq); 1682 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1683 enum ieee80211_agg_stop_reason reason); 1684 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1685 struct sta_info *sta, 1686 struct ieee80211_mgmt *mgmt, size_t len); 1687 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1688 struct sta_info *sta, 1689 struct ieee80211_mgmt *mgmt, 1690 size_t len); 1691 void ieee80211_process_addba_request(struct ieee80211_local *local, 1692 struct sta_info *sta, 1693 struct ieee80211_mgmt *mgmt, 1694 size_t len); 1695 1696 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1697 enum ieee80211_agg_stop_reason reason); 1698 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1699 enum ieee80211_agg_stop_reason reason); 1700 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1701 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1702 void ieee80211_ba_session_work(struct work_struct *work); 1703 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1704 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1705 1706 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1707 1708 /* VHT */ 1709 void 1710 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1711 struct ieee80211_supported_band *sband, 1712 const struct ieee80211_vht_cap *vht_cap_ie, 1713 struct sta_info *sta); 1714 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1715 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1716 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1717 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1718 struct sta_info *sta, u8 opmode, 1719 enum ieee80211_band band); 1720 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1721 struct sta_info *sta, u8 opmode, 1722 enum ieee80211_band band); 1723 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1724 struct ieee80211_sta_vht_cap *vht_cap); 1725 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1726 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1727 1728 /* Spectrum management */ 1729 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1730 struct ieee80211_mgmt *mgmt, 1731 size_t len); 1732 /** 1733 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1734 * @sdata: the sdata of the interface which has received the frame 1735 * @elems: parsed 802.11 elements received with the frame 1736 * @current_band: indicates the current band 1737 * @sta_flags: contains information about own capabilities and restrictions 1738 * to decide which channel switch announcements can be accepted. Only the 1739 * following subset of &enum ieee80211_sta_flags are evaluated: 1740 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1741 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1742 * %IEEE80211_STA_DISABLE_160MHZ. 1743 * @bssid: the currently connected bssid (for reporting) 1744 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1745 All of them will be filled with if success only. 1746 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1747 */ 1748 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1749 struct ieee802_11_elems *elems, 1750 enum ieee80211_band current_band, 1751 u32 sta_flags, u8 *bssid, 1752 struct ieee80211_csa_ie *csa_ie); 1753 1754 /* Suspend/resume and hw reconfiguration */ 1755 int ieee80211_reconfig(struct ieee80211_local *local); 1756 void ieee80211_stop_device(struct ieee80211_local *local); 1757 1758 int __ieee80211_suspend(struct ieee80211_hw *hw, 1759 struct cfg80211_wowlan *wowlan); 1760 1761 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1762 { 1763 struct ieee80211_local *local = hw_to_local(hw); 1764 1765 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1766 !test_bit(SCAN_COMPLETED, &local->scanning), 1767 "%s: resume with hardware scan still in progress\n", 1768 wiphy_name(hw->wiphy)); 1769 1770 return ieee80211_reconfig(hw_to_local(hw)); 1771 } 1772 1773 /* utility functions/constants */ 1774 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1775 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1776 int rate, int erp, int short_preamble, 1777 int shift); 1778 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1779 bool bss_notify, bool enable_qos); 1780 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1781 struct sta_info *sta, struct sk_buff *skb); 1782 1783 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1784 struct sk_buff *skb, int tid, 1785 enum ieee80211_band band); 1786 1787 static inline void 1788 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1789 struct sk_buff *skb, int tid, 1790 enum ieee80211_band band) 1791 { 1792 rcu_read_lock(); 1793 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1794 rcu_read_unlock(); 1795 } 1796 1797 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1798 struct sk_buff *skb, int tid) 1799 { 1800 struct ieee80211_chanctx_conf *chanctx_conf; 1801 1802 rcu_read_lock(); 1803 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1804 if (WARN_ON(!chanctx_conf)) { 1805 rcu_read_unlock(); 1806 kfree_skb(skb); 1807 return; 1808 } 1809 1810 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1811 chanctx_conf->def.chan->band); 1812 rcu_read_unlock(); 1813 } 1814 1815 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1816 struct sk_buff *skb) 1817 { 1818 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1819 ieee80211_tx_skb_tid(sdata, skb, 7); 1820 } 1821 1822 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1823 struct ieee802_11_elems *elems, 1824 u64 filter, u32 crc); 1825 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1826 bool action, 1827 struct ieee802_11_elems *elems) 1828 { 1829 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1830 } 1831 1832 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1833 { 1834 struct sk_buff *tail = skb_peek_tail(frames); 1835 struct ieee80211_rx_status *status; 1836 1837 if (!tail) 1838 return false; 1839 1840 status = IEEE80211_SKB_RXCB(tail); 1841 if (status->flag & RX_FLAG_AMSDU_MORE) 1842 return false; 1843 1844 return true; 1845 } 1846 1847 extern const int ieee802_1d_to_ac[8]; 1848 1849 static inline int ieee80211_ac_from_tid(int tid) 1850 { 1851 return ieee802_1d_to_ac[tid & 7]; 1852 } 1853 1854 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1855 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1856 void ieee80211_dynamic_ps_timer(unsigned long data); 1857 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1858 struct ieee80211_sub_if_data *sdata, 1859 bool powersave); 1860 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1861 struct ieee80211_hdr *hdr); 1862 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1863 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1864 1865 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1866 unsigned long queues, 1867 enum queue_stop_reason reason, 1868 bool refcounted); 1869 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1870 struct ieee80211_sub_if_data *sdata, 1871 enum queue_stop_reason reason); 1872 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1873 struct ieee80211_sub_if_data *sdata, 1874 enum queue_stop_reason reason); 1875 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1876 unsigned long queues, 1877 enum queue_stop_reason reason, 1878 bool refcounted); 1879 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1880 enum queue_stop_reason reason, 1881 bool refcounted); 1882 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1883 enum queue_stop_reason reason, 1884 bool refcounted); 1885 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1886 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1887 struct sk_buff *skb); 1888 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1889 struct sk_buff_head *skbs); 1890 void ieee80211_flush_queues(struct ieee80211_local *local, 1891 struct ieee80211_sub_if_data *sdata, bool drop); 1892 void __ieee80211_flush_queues(struct ieee80211_local *local, 1893 struct ieee80211_sub_if_data *sdata, 1894 unsigned int queues, bool drop); 1895 1896 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1897 { 1898 /* 1899 * If quiescing is set, we are racing with __ieee80211_suspend. 1900 * __ieee80211_suspend flushes the workers after setting quiescing, 1901 * and we check quiescing / suspended before enqueing new workers. 1902 * We should abort the worker to avoid the races below. 1903 */ 1904 if (local->quiescing) 1905 return false; 1906 1907 /* 1908 * We might already be suspended if the following scenario occurs: 1909 * __ieee80211_suspend Control path 1910 * 1911 * if (local->quiescing) 1912 * return; 1913 * local->quiescing = true; 1914 * flush_workqueue(); 1915 * queue_work(...); 1916 * local->suspended = true; 1917 * local->quiescing = false; 1918 * worker starts running... 1919 */ 1920 if (local->suspended) 1921 return false; 1922 1923 return true; 1924 } 1925 1926 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1927 struct sta_info *sta, 1928 struct txq_info *txq, int tid); 1929 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1930 u16 transaction, u16 auth_alg, u16 status, 1931 const u8 *extra, size_t extra_len, const u8 *bssid, 1932 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1933 u32 tx_flags); 1934 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1935 const u8 *bssid, u16 stype, u16 reason, 1936 bool send_frame, u8 *frame_buf); 1937 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1938 size_t buffer_len, 1939 struct ieee80211_scan_ies *ie_desc, 1940 const u8 *ie, size_t ie_len, 1941 u8 bands_used, u32 *rate_masks, 1942 struct cfg80211_chan_def *chandef); 1943 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1944 const u8 *src, const u8 *dst, 1945 u32 ratemask, 1946 struct ieee80211_channel *chan, 1947 const u8 *ssid, size_t ssid_len, 1948 const u8 *ie, size_t ie_len, 1949 bool directed); 1950 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1951 const u8 *src, const u8 *dst, 1952 const u8 *ssid, size_t ssid_len, 1953 const u8 *ie, size_t ie_len, 1954 u32 ratemask, bool directed, u32 tx_flags, 1955 struct ieee80211_channel *channel, bool scan); 1956 1957 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1958 struct ieee802_11_elems *elems, 1959 enum ieee80211_band band, u32 *basic_rates); 1960 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1961 enum ieee80211_smps_mode smps_mode); 1962 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1963 enum ieee80211_smps_mode smps_mode); 1964 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1965 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1966 1967 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1968 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1969 u16 cap); 1970 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1971 const struct cfg80211_chan_def *chandef, 1972 u16 prot_mode, bool rifs_mode); 1973 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1974 u32 cap); 1975 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1976 const struct cfg80211_chan_def *chandef); 1977 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1978 const struct ieee80211_supported_band *sband, 1979 const u8 *srates, int srates_len, u32 *rates); 1980 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1981 struct sk_buff *skb, bool need_basic, 1982 enum ieee80211_band band); 1983 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1984 struct sk_buff *skb, bool need_basic, 1985 enum ieee80211_band band); 1986 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1987 1988 /* channel management */ 1989 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1990 const struct ieee80211_ht_operation *ht_oper, 1991 struct cfg80211_chan_def *chandef); 1992 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1993 const struct ieee80211_vht_operation *oper, 1994 struct cfg80211_chan_def *chandef); 1995 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1996 1997 int __must_check 1998 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1999 const struct cfg80211_chan_def *chandef, 2000 enum ieee80211_chanctx_mode mode); 2001 int __must_check 2002 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2003 const struct cfg80211_chan_def *chandef, 2004 enum ieee80211_chanctx_mode mode, 2005 bool radar_required); 2006 int __must_check 2007 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2008 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2009 2010 int __must_check 2011 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2012 const struct cfg80211_chan_def *chandef, 2013 u32 *changed); 2014 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2015 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2016 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2017 bool clear); 2018 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2019 struct ieee80211_chanctx *ctx); 2020 2021 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2022 struct ieee80211_chanctx *chanctx); 2023 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2024 struct ieee80211_chanctx *ctx); 2025 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2026 2027 void ieee80211_dfs_cac_timer(unsigned long data); 2028 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2029 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2030 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2031 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2032 struct cfg80211_csa_settings *csa_settings); 2033 2034 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2035 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2036 const struct ieee80211_cipher_scheme * 2037 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2038 enum nl80211_iftype iftype); 2039 int ieee80211_cs_headroom(struct ieee80211_local *local, 2040 struct cfg80211_crypto_settings *crypto, 2041 enum nl80211_iftype iftype); 2042 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2043 struct ieee80211_sub_if_data *sdata); 2044 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2045 const struct cfg80211_chan_def *chandef, 2046 enum ieee80211_chanctx_mode chanmode, 2047 u8 radar_detect); 2048 int ieee80211_max_num_channels(struct ieee80211_local *local); 2049 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2050 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2051 struct ieee80211_chanctx *ctx); 2052 2053 /* TDLS */ 2054 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2055 const u8 *peer, u8 action_code, u8 dialog_token, 2056 u16 status_code, u32 peer_capability, 2057 bool initiator, const u8 *extra_ies, 2058 size_t extra_ies_len); 2059 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2060 const u8 *peer, enum nl80211_tdls_operation oper); 2061 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2062 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2063 const u8 *addr, u8 oper_class, 2064 struct cfg80211_chan_def *chandef); 2065 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2066 struct net_device *dev, 2067 const u8 *addr); 2068 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2069 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2070 2071 extern const struct ethtool_ops ieee80211_ethtool_ops; 2072 2073 #ifdef CONFIG_MAC80211_NOINLINE 2074 #define debug_noinline noinline 2075 #else 2076 #define debug_noinline 2077 #endif 2078 2079 #endif /* IEEE80211_I_H */ 2080