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 struct list_head dependents; 329 330 struct delayed_work work; 331 332 struct ieee80211_sub_if_data *sdata; 333 334 struct ieee80211_channel *chan; 335 336 bool started, abort, hw_begun, notified; 337 bool to_be_freed; 338 bool on_channel; 339 340 unsigned long hw_start_time; 341 342 u32 duration, req_duration; 343 struct sk_buff *frame; 344 u64 cookie, mgmt_tx_cookie; 345 enum ieee80211_roc_type type; 346 }; 347 348 /* flags used in struct ieee80211_if_managed.flags */ 349 enum ieee80211_sta_flags { 350 IEEE80211_STA_CONNECTION_POLL = BIT(1), 351 IEEE80211_STA_CONTROL_PORT = BIT(2), 352 IEEE80211_STA_DISABLE_HT = BIT(4), 353 IEEE80211_STA_MFP_ENABLED = BIT(6), 354 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 355 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 356 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 357 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 358 IEEE80211_STA_DISABLE_VHT = BIT(11), 359 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 360 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 361 IEEE80211_STA_DISABLE_WMM = BIT(14), 362 IEEE80211_STA_ENABLE_RRM = BIT(15), 363 }; 364 365 struct ieee80211_mgd_auth_data { 366 struct cfg80211_bss *bss; 367 unsigned long timeout; 368 int tries; 369 u16 algorithm, expected_transaction; 370 371 u8 key[WLAN_KEY_LEN_WEP104]; 372 u8 key_len, key_idx; 373 bool done; 374 bool timeout_started; 375 376 u16 sae_trans, sae_status; 377 size_t data_len; 378 u8 data[]; 379 }; 380 381 struct ieee80211_mgd_assoc_data { 382 struct cfg80211_bss *bss; 383 const u8 *supp_rates; 384 385 unsigned long timeout; 386 int tries; 387 388 u16 capability; 389 u8 prev_bssid[ETH_ALEN]; 390 u8 ssid[IEEE80211_MAX_SSID_LEN]; 391 u8 ssid_len; 392 u8 supp_rates_len; 393 bool wmm, uapsd; 394 bool need_beacon; 395 bool synced; 396 bool timeout_started; 397 398 u8 ap_ht_param; 399 400 struct ieee80211_vht_cap ap_vht_cap; 401 402 size_t ie_len; 403 u8 ie[]; 404 }; 405 406 struct ieee80211_sta_tx_tspec { 407 /* timestamp of the first packet in the time slice */ 408 unsigned long time_slice_start; 409 410 u32 admitted_time; /* in usecs, unlike over the air */ 411 u8 tsid; 412 s8 up; /* signed to be able to invalidate with -1 during teardown */ 413 414 /* consumed TX time in microseconds in the time slice */ 415 u32 consumed_tx_time; 416 enum { 417 TX_TSPEC_ACTION_NONE = 0, 418 TX_TSPEC_ACTION_DOWNGRADE, 419 TX_TSPEC_ACTION_STOP_DOWNGRADE, 420 } action; 421 bool downgraded; 422 }; 423 424 DECLARE_EWMA(beacon_signal, 16, 4) 425 426 struct ieee80211_if_managed { 427 struct timer_list timer; 428 struct timer_list conn_mon_timer; 429 struct timer_list bcn_mon_timer; 430 struct timer_list chswitch_timer; 431 struct work_struct monitor_work; 432 struct work_struct chswitch_work; 433 struct work_struct beacon_connection_loss_work; 434 struct work_struct csa_connection_drop_work; 435 436 unsigned long beacon_timeout; 437 unsigned long probe_timeout; 438 int probe_send_count; 439 bool nullfunc_failed; 440 bool connection_loss; 441 442 struct cfg80211_bss *associated; 443 struct ieee80211_mgd_auth_data *auth_data; 444 struct ieee80211_mgd_assoc_data *assoc_data; 445 446 u8 bssid[ETH_ALEN]; 447 448 u16 aid; 449 450 bool powersave; /* powersave requested for this iface */ 451 bool broken_ap; /* AP is broken -- turn off powersave */ 452 bool have_beacon; 453 u8 dtim_period; 454 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 455 driver_smps_mode; /* smps mode request */ 456 457 struct work_struct request_smps_work; 458 459 unsigned int flags; 460 461 bool csa_waiting_bcn; 462 bool csa_ignored_same_chan; 463 464 bool beacon_crc_valid; 465 u32 beacon_crc; 466 467 bool status_acked; 468 bool status_received; 469 __le16 status_fc; 470 471 enum { 472 IEEE80211_MFP_DISABLED, 473 IEEE80211_MFP_OPTIONAL, 474 IEEE80211_MFP_REQUIRED 475 } mfp; /* management frame protection */ 476 477 /* 478 * Bitmask of enabled u-apsd queues, 479 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 480 * to take effect. 481 */ 482 unsigned int uapsd_queues; 483 484 /* 485 * Maximum number of buffered frames AP can deliver during a 486 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 487 * Needs a new association to take effect. 488 */ 489 unsigned int uapsd_max_sp_len; 490 491 int wmm_last_param_set; 492 493 u8 use_4addr; 494 495 s16 p2p_noa_index; 496 497 struct ewma_beacon_signal ave_beacon_signal; 498 499 /* 500 * Number of Beacon frames used in ave_beacon_signal. This can be used 501 * to avoid generating less reliable cqm events that would be based 502 * only on couple of received frames. 503 */ 504 unsigned int count_beacon_signal; 505 506 /* Number of times beacon loss was invoked. */ 507 unsigned int beacon_loss_count; 508 509 /* 510 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 511 * that triggered a cqm event. 0 indicates that no event has been 512 * generated for the current association. 513 */ 514 int last_cqm_event_signal; 515 516 /* 517 * State variables for keeping track of RSSI of the AP currently 518 * connected to and informing driver when RSSI has gone 519 * below/above a certain threshold. 520 */ 521 int rssi_min_thold, rssi_max_thold; 522 int last_ave_beacon_signal; 523 524 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 525 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 526 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 527 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 528 529 /* TDLS support */ 530 u8 tdls_peer[ETH_ALEN] __aligned(2); 531 struct delayed_work tdls_peer_del_work; 532 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 533 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 534 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 535 bool tdls_chan_switch_prohibited; 536 bool tdls_wider_bw_prohibited; 537 538 /* WMM-AC TSPEC support */ 539 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 540 /* Use a separate work struct so that we can do something here 541 * while the sdata->work is flushing the queues, for example. 542 * otherwise, in scenarios where we hardly get any traffic out 543 * on the BE queue, but there's a lot of VO traffic, we might 544 * get stuck in a downgraded situation and flush takes forever. 545 */ 546 struct delayed_work tx_tspec_wk; 547 }; 548 549 struct ieee80211_if_ibss { 550 struct timer_list timer; 551 struct work_struct csa_connection_drop_work; 552 553 unsigned long last_scan_completed; 554 555 u32 basic_rates; 556 557 bool fixed_bssid; 558 bool fixed_channel; 559 bool privacy; 560 561 bool control_port; 562 bool userspace_handles_dfs; 563 564 u8 bssid[ETH_ALEN] __aligned(2); 565 u8 ssid[IEEE80211_MAX_SSID_LEN]; 566 u8 ssid_len, ie_len; 567 u8 *ie; 568 struct cfg80211_chan_def chandef; 569 570 unsigned long ibss_join_req; 571 /* probe response/beacon for IBSS */ 572 struct beacon_data __rcu *presp; 573 574 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 575 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 576 577 spinlock_t incomplete_lock; 578 struct list_head incomplete_stations; 579 580 enum { 581 IEEE80211_IBSS_MLME_SEARCH, 582 IEEE80211_IBSS_MLME_JOINED, 583 } state; 584 }; 585 586 /** 587 * struct ieee80211_if_ocb - OCB mode state 588 * 589 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 590 * @wrkq_flags: OCB deferred task action 591 * @incomplete_lock: delayed STA insertion lock 592 * @incomplete_stations: list of STAs waiting for delayed insertion 593 * @joined: indication if the interface is connected to an OCB network 594 */ 595 struct ieee80211_if_ocb { 596 struct timer_list housekeeping_timer; 597 unsigned long wrkq_flags; 598 599 spinlock_t incomplete_lock; 600 struct list_head incomplete_stations; 601 602 bool joined; 603 }; 604 605 /** 606 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 607 * 608 * these declarations define the interface, which enables 609 * vendor-specific mesh synchronization 610 * 611 */ 612 struct ieee802_11_elems; 613 struct ieee80211_mesh_sync_ops { 614 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 615 u16 stype, 616 struct ieee80211_mgmt *mgmt, 617 struct ieee802_11_elems *elems, 618 struct ieee80211_rx_status *rx_status); 619 620 /* should be called with beacon_data under RCU read lock */ 621 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 622 struct beacon_data *beacon); 623 /* add other framework functions here */ 624 }; 625 626 struct mesh_csa_settings { 627 struct rcu_head rcu_head; 628 struct cfg80211_csa_settings settings; 629 }; 630 631 struct ieee80211_if_mesh { 632 struct timer_list housekeeping_timer; 633 struct timer_list mesh_path_timer; 634 struct timer_list mesh_path_root_timer; 635 636 unsigned long wrkq_flags; 637 unsigned long mbss_changed; 638 639 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 640 size_t mesh_id_len; 641 /* Active Path Selection Protocol Identifier */ 642 u8 mesh_pp_id; 643 /* Active Path Selection Metric Identifier */ 644 u8 mesh_pm_id; 645 /* Congestion Control Mode Identifier */ 646 u8 mesh_cc_id; 647 /* Synchronization Protocol Identifier */ 648 u8 mesh_sp_id; 649 /* Authentication Protocol Identifier */ 650 u8 mesh_auth_id; 651 /* Local mesh Sequence Number */ 652 u32 sn; 653 /* Last used PREQ ID */ 654 u32 preq_id; 655 atomic_t mpaths; 656 /* Timestamp of last SN update */ 657 unsigned long last_sn_update; 658 /* Time when it's ok to send next PERR */ 659 unsigned long next_perr; 660 /* Timestamp of last PREQ sent */ 661 unsigned long last_preq; 662 struct mesh_rmc *rmc; 663 spinlock_t mesh_preq_queue_lock; 664 struct mesh_preq_queue preq_queue; 665 int preq_queue_len; 666 struct mesh_stats mshstats; 667 struct mesh_config mshcfg; 668 atomic_t estab_plinks; 669 u32 mesh_seqnum; 670 bool accepting_plinks; 671 int num_gates; 672 struct beacon_data __rcu *beacon; 673 const u8 *ie; 674 u8 ie_len; 675 enum { 676 IEEE80211_MESH_SEC_NONE = 0x0, 677 IEEE80211_MESH_SEC_AUTHED = 0x1, 678 IEEE80211_MESH_SEC_SECURED = 0x2, 679 } security; 680 bool user_mpm; 681 /* Extensible Synchronization Framework */ 682 const struct ieee80211_mesh_sync_ops *sync_ops; 683 s64 sync_offset_clockdrift_max; 684 spinlock_t sync_offset_lock; 685 bool adjusting_tbtt; 686 /* mesh power save */ 687 enum nl80211_mesh_power_mode nonpeer_pm; 688 int ps_peers_light_sleep; 689 int ps_peers_deep_sleep; 690 struct ps_data ps; 691 /* Channel Switching Support */ 692 struct mesh_csa_settings __rcu *csa; 693 enum { 694 IEEE80211_MESH_CSA_ROLE_NONE, 695 IEEE80211_MESH_CSA_ROLE_INIT, 696 IEEE80211_MESH_CSA_ROLE_REPEATER, 697 } csa_role; 698 u8 chsw_ttl; 699 u16 pre_value; 700 701 /* offset from skb->data while building IE */ 702 int meshconf_offset; 703 }; 704 705 #ifdef CONFIG_MAC80211_MESH 706 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 707 do { (msh)->mshstats.name++; } while (0) 708 #else 709 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 710 do { } while (0) 711 #endif 712 713 /** 714 * enum ieee80211_sub_if_data_flags - virtual interface flags 715 * 716 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 717 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 718 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 719 * associated stations and deliver multicast frames both 720 * back to wireless media and to the local net stack. 721 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 722 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 723 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability 724 */ 725 enum ieee80211_sub_if_data_flags { 726 IEEE80211_SDATA_ALLMULTI = BIT(0), 727 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 728 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 729 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 730 IEEE80211_SDATA_IN_DRIVER = BIT(5), 731 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6), 732 }; 733 734 /** 735 * enum ieee80211_sdata_state_bits - virtual interface state bits 736 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 737 * mirrors netif_running() but is separate for interface type 738 * change handling while the interface is up 739 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 740 * mode, so queues are stopped 741 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 742 * to offchannel, reset when offchannel returns 743 */ 744 enum ieee80211_sdata_state_bits { 745 SDATA_STATE_RUNNING, 746 SDATA_STATE_OFFCHANNEL, 747 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 748 }; 749 750 /** 751 * enum ieee80211_chanctx_mode - channel context configuration mode 752 * 753 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 754 * multiple interfaces 755 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 756 * only by a single interface. This can be used for example for 757 * non-fixed channel IBSS. 758 */ 759 enum ieee80211_chanctx_mode { 760 IEEE80211_CHANCTX_SHARED, 761 IEEE80211_CHANCTX_EXCLUSIVE 762 }; 763 764 /** 765 * enum ieee80211_chanctx_replace_state - channel context replacement state 766 * 767 * This is used for channel context in-place reservations that require channel 768 * context switch/swap. 769 * 770 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 771 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 772 * by a (not yet registered) channel context pointed by %replace_ctx. 773 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 774 * replaces an existing channel context pointed to by %replace_ctx. 775 */ 776 enum ieee80211_chanctx_replace_state { 777 IEEE80211_CHANCTX_REPLACE_NONE, 778 IEEE80211_CHANCTX_WILL_BE_REPLACED, 779 IEEE80211_CHANCTX_REPLACES_OTHER, 780 }; 781 782 struct ieee80211_chanctx { 783 struct list_head list; 784 struct rcu_head rcu_head; 785 786 struct list_head assigned_vifs; 787 struct list_head reserved_vifs; 788 789 enum ieee80211_chanctx_replace_state replace_state; 790 struct ieee80211_chanctx *replace_ctx; 791 792 enum ieee80211_chanctx_mode mode; 793 bool driver_present; 794 795 struct ieee80211_chanctx_conf conf; 796 }; 797 798 struct mac80211_qos_map { 799 struct cfg80211_qos_map qos_map; 800 struct rcu_head rcu_head; 801 }; 802 803 enum txq_info_flags { 804 IEEE80211_TXQ_STOP, 805 IEEE80211_TXQ_AMPDU, 806 }; 807 808 struct txq_info { 809 struct sk_buff_head queue; 810 unsigned long flags; 811 812 /* keep last! */ 813 struct ieee80211_txq txq; 814 }; 815 816 struct ieee80211_sub_if_data { 817 struct list_head list; 818 819 struct wireless_dev wdev; 820 821 /* keys */ 822 struct list_head key_list; 823 824 /* count for keys needing tailroom space allocation */ 825 int crypto_tx_tailroom_needed_cnt; 826 int crypto_tx_tailroom_pending_dec; 827 struct delayed_work dec_tailroom_needed_wk; 828 829 struct net_device *dev; 830 struct ieee80211_local *local; 831 832 unsigned int flags; 833 834 unsigned long state; 835 836 char name[IFNAMSIZ]; 837 838 /* Fragment table for host-based reassembly */ 839 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 840 unsigned int fragment_next; 841 842 /* TID bitmap for NoAck policy */ 843 u16 noack_map; 844 845 /* bit field of ACM bits (BIT(802.1D tag)) */ 846 u8 wmm_acm; 847 848 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 849 struct ieee80211_key __rcu *default_unicast_key; 850 struct ieee80211_key __rcu *default_multicast_key; 851 struct ieee80211_key __rcu *default_mgmt_key; 852 853 u16 sequence_number; 854 __be16 control_port_protocol; 855 bool control_port_no_encrypt; 856 int encrypt_headroom; 857 858 atomic_t txqs_len[IEEE80211_NUM_ACS]; 859 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 860 struct mac80211_qos_map __rcu *qos_map; 861 862 struct work_struct csa_finalize_work; 863 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 864 struct cfg80211_chan_def csa_chandef; 865 866 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 867 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 868 869 /* context reservation -- protected with chanctx_mtx */ 870 struct ieee80211_chanctx *reserved_chanctx; 871 struct cfg80211_chan_def reserved_chandef; 872 bool reserved_radar_required; 873 bool reserved_ready; 874 875 /* used to reconfigure hardware SM PS */ 876 struct work_struct recalc_smps; 877 878 struct work_struct work; 879 struct sk_buff_head skb_queue; 880 881 u8 needed_rx_chains; 882 enum ieee80211_smps_mode smps_mode; 883 884 int user_power_level; /* in dBm */ 885 int ap_power_level; /* in dBm */ 886 887 bool radar_required; 888 struct delayed_work dfs_cac_timer_work; 889 890 /* 891 * AP this belongs to: self in AP mode and 892 * corresponding AP in VLAN mode, NULL for 893 * all others (might be needed later in IBSS) 894 */ 895 struct ieee80211_if_ap *bss; 896 897 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 898 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 899 900 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 901 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 902 903 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS]; 904 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX]; 905 906 union { 907 struct ieee80211_if_ap ap; 908 struct ieee80211_if_wds wds; 909 struct ieee80211_if_vlan vlan; 910 struct ieee80211_if_managed mgd; 911 struct ieee80211_if_ibss ibss; 912 struct ieee80211_if_mesh mesh; 913 struct ieee80211_if_ocb ocb; 914 u32 mntr_flags; 915 } u; 916 917 #ifdef CONFIG_MAC80211_DEBUGFS 918 struct { 919 struct dentry *subdir_stations; 920 struct dentry *default_unicast_key; 921 struct dentry *default_multicast_key; 922 struct dentry *default_mgmt_key; 923 } debugfs; 924 #endif 925 926 /* must be last, dynamically sized area in this! */ 927 struct ieee80211_vif vif; 928 }; 929 930 static inline 931 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 932 { 933 return container_of(p, struct ieee80211_sub_if_data, vif); 934 } 935 936 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 937 __acquires(&sdata->wdev.mtx) 938 { 939 mutex_lock(&sdata->wdev.mtx); 940 __acquire(&sdata->wdev.mtx); 941 } 942 943 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 944 __releases(&sdata->wdev.mtx) 945 { 946 mutex_unlock(&sdata->wdev.mtx); 947 __release(&sdata->wdev.mtx); 948 } 949 950 #define sdata_dereference(p, sdata) \ 951 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 952 953 static inline void 954 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 955 { 956 lockdep_assert_held(&sdata->wdev.mtx); 957 } 958 959 static inline enum ieee80211_band 960 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 961 { 962 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 963 struct ieee80211_chanctx_conf *chanctx_conf; 964 965 rcu_read_lock(); 966 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 967 if (!WARN_ON(!chanctx_conf)) 968 band = chanctx_conf->def.chan->band; 969 rcu_read_unlock(); 970 971 return band; 972 } 973 974 static inline int 975 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 976 { 977 switch (chandef->width) { 978 case NL80211_CHAN_WIDTH_5: 979 return 2; 980 case NL80211_CHAN_WIDTH_10: 981 return 1; 982 default: 983 return 0; 984 } 985 } 986 987 static inline int 988 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 989 { 990 struct ieee80211_chanctx_conf *chanctx_conf; 991 int shift = 0; 992 993 rcu_read_lock(); 994 chanctx_conf = rcu_dereference(vif->chanctx_conf); 995 if (chanctx_conf) 996 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 997 rcu_read_unlock(); 998 999 return shift; 1000 } 1001 1002 struct ieee80211_rx_agg { 1003 u8 addr[ETH_ALEN]; 1004 u16 tid; 1005 }; 1006 1007 enum sdata_queue_type { 1008 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1009 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1010 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1011 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1012 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1013 }; 1014 1015 enum { 1016 IEEE80211_RX_MSG = 1, 1017 IEEE80211_TX_STATUS_MSG = 2, 1018 }; 1019 1020 enum queue_stop_reason { 1021 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1022 IEEE80211_QUEUE_STOP_REASON_PS, 1023 IEEE80211_QUEUE_STOP_REASON_CSA, 1024 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1025 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1026 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1027 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1028 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1029 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1030 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1031 1032 IEEE80211_QUEUE_STOP_REASONS, 1033 }; 1034 1035 #ifdef CONFIG_MAC80211_LEDS 1036 struct tpt_led_trigger { 1037 char name[32]; 1038 const struct ieee80211_tpt_blink *blink_table; 1039 unsigned int blink_table_len; 1040 struct timer_list timer; 1041 unsigned long prev_traffic; 1042 unsigned long tx_bytes, rx_bytes; 1043 unsigned int active, want; 1044 bool running; 1045 }; 1046 #endif 1047 1048 /** 1049 * mac80211 scan flags - currently active scan mode 1050 * 1051 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1052 * well be on the operating channel 1053 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1054 * determine if we are on the operating channel or not 1055 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1056 * channel. This should not interrupt normal traffic. 1057 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1058 * that the scan completed. 1059 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1060 * a scan complete for an aborted scan. 1061 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1062 * cancelled. 1063 */ 1064 enum { 1065 SCAN_SW_SCANNING, 1066 SCAN_HW_SCANNING, 1067 SCAN_ONCHANNEL_SCANNING, 1068 SCAN_COMPLETED, 1069 SCAN_ABORTED, 1070 SCAN_HW_CANCELLED, 1071 }; 1072 1073 /** 1074 * enum mac80211_scan_state - scan state machine states 1075 * 1076 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1077 * determines if we should keep on scanning or switch back to the 1078 * operating channel 1079 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1080 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1081 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1082 * send out data 1083 * @SCAN_RESUME: Resume the scan and scan the next channel 1084 * @SCAN_ABORT: Abort the scan and go back to operating channel 1085 */ 1086 enum mac80211_scan_state { 1087 SCAN_DECISION, 1088 SCAN_SET_CHANNEL, 1089 SCAN_SEND_PROBE, 1090 SCAN_SUSPEND, 1091 SCAN_RESUME, 1092 SCAN_ABORT, 1093 }; 1094 1095 struct ieee80211_local { 1096 /* embed the driver visible part. 1097 * don't cast (use the static inlines below), but we keep 1098 * it first anyway so they become a no-op */ 1099 struct ieee80211_hw hw; 1100 1101 const struct ieee80211_ops *ops; 1102 1103 /* 1104 * private workqueue to mac80211. mac80211 makes this accessible 1105 * via ieee80211_queue_work() 1106 */ 1107 struct workqueue_struct *workqueue; 1108 1109 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1110 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1111 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1112 spinlock_t queue_stop_reason_lock; 1113 1114 int open_count; 1115 int monitors, cooked_mntrs; 1116 /* number of interfaces with corresponding FIF_ flags */ 1117 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1118 fif_probe_req; 1119 int probe_req_reg; 1120 unsigned int filter_flags; /* FIF_* */ 1121 1122 bool wiphy_ciphers_allocated; 1123 1124 bool use_chanctx; 1125 1126 /* protects the aggregated multicast list and filter calls */ 1127 spinlock_t filter_lock; 1128 1129 /* used for uploading changed mc list */ 1130 struct work_struct reconfig_filter; 1131 1132 /* aggregated multicast list */ 1133 struct netdev_hw_addr_list mc_list; 1134 1135 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1136 1137 /* 1138 * suspended is true if we finished all the suspend _and_ we have 1139 * not yet come up from resume. This is to be used by mac80211 1140 * to ensure driver sanity during suspend and mac80211's own 1141 * sanity. It can eventually be used for WoW as well. 1142 */ 1143 bool suspended; 1144 1145 /* 1146 * Resuming is true while suspended, but when we're reprogramming the 1147 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1148 * again even though some other parts of the stack are still suspended 1149 * and we still drop received frames to avoid waking the stack. 1150 */ 1151 bool resuming; 1152 1153 /* 1154 * quiescing is true during the suspend process _only_ to 1155 * ease timer cancelling etc. 1156 */ 1157 bool quiescing; 1158 1159 /* device is started */ 1160 bool started; 1161 1162 /* device is during a HW reconfig */ 1163 bool in_reconfig; 1164 1165 /* wowlan is enabled -- don't reconfig on resume */ 1166 bool wowlan; 1167 1168 struct work_struct radar_detected_work; 1169 1170 /* number of RX chains the hardware has */ 1171 u8 rx_chains; 1172 1173 int tx_headroom; /* required headroom for hardware/radiotap */ 1174 1175 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1176 * added to skb_queue will be processed, but frames in 1177 * skb_queue_unreliable may be dropped if the total length of these 1178 * queues increases over the limit. */ 1179 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1180 struct tasklet_struct tasklet; 1181 struct sk_buff_head skb_queue; 1182 struct sk_buff_head skb_queue_unreliable; 1183 1184 spinlock_t rx_path_lock; 1185 1186 /* Station data */ 1187 /* 1188 * The mutex only protects the list, hash table and 1189 * counter, reads are done with RCU. 1190 */ 1191 struct mutex sta_mtx; 1192 spinlock_t tim_lock; 1193 unsigned long num_sta; 1194 struct list_head sta_list; 1195 struct rhashtable sta_hash; 1196 struct timer_list sta_cleanup; 1197 int sta_generation; 1198 1199 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1200 struct tasklet_struct tx_pending_tasklet; 1201 1202 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1203 1204 /* number of interfaces with allmulti RX */ 1205 atomic_t iff_allmultis; 1206 1207 struct rate_control_ref *rate_ctrl; 1208 1209 struct crypto_cipher *wep_tx_tfm; 1210 struct crypto_cipher *wep_rx_tfm; 1211 u32 wep_iv; 1212 1213 /* see iface.c */ 1214 struct list_head interfaces; 1215 struct mutex iflist_mtx; 1216 1217 /* 1218 * Key mutex, protects sdata's key_list and sta_info's 1219 * key pointers (write access, they're RCU.) 1220 */ 1221 struct mutex key_mtx; 1222 1223 /* mutex for scan and work locking */ 1224 struct mutex mtx; 1225 1226 /* Scanning and BSS list */ 1227 unsigned long scanning; 1228 struct cfg80211_ssid scan_ssid; 1229 struct cfg80211_scan_request *int_scan_req; 1230 struct cfg80211_scan_request __rcu *scan_req; 1231 struct ieee80211_scan_request *hw_scan_req; 1232 struct cfg80211_chan_def scan_chandef; 1233 enum ieee80211_band hw_scan_band; 1234 int scan_channel_idx; 1235 int scan_ies_len; 1236 int hw_scan_ies_bufsize; 1237 1238 struct work_struct sched_scan_stopped_work; 1239 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1240 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1241 u8 scan_addr[ETH_ALEN]; 1242 1243 unsigned long leave_oper_channel_time; 1244 enum mac80211_scan_state next_scan_state; 1245 struct delayed_work scan_work; 1246 struct ieee80211_sub_if_data __rcu *scan_sdata; 1247 /* For backward compatibility only -- do not use */ 1248 struct cfg80211_chan_def _oper_chandef; 1249 1250 /* Temporary remain-on-channel for off-channel operations */ 1251 struct ieee80211_channel *tmp_channel; 1252 1253 /* channel contexts */ 1254 struct list_head chanctx_list; 1255 struct mutex chanctx_mtx; 1256 1257 #ifdef CONFIG_MAC80211_LEDS 1258 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1259 struct led_trigger tpt_led; 1260 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1261 atomic_t radio_led_active, tpt_led_active; 1262 struct tpt_led_trigger *tpt_led_trigger; 1263 #endif 1264 1265 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1266 /* SNMP counters */ 1267 /* dot11CountersTable */ 1268 u32 dot11TransmittedFragmentCount; 1269 u32 dot11MulticastTransmittedFrameCount; 1270 u32 dot11FailedCount; 1271 u32 dot11RetryCount; 1272 u32 dot11MultipleRetryCount; 1273 u32 dot11FrameDuplicateCount; 1274 u32 dot11ReceivedFragmentCount; 1275 u32 dot11MulticastReceivedFrameCount; 1276 u32 dot11TransmittedFrameCount; 1277 1278 /* TX/RX handler statistics */ 1279 unsigned int tx_handlers_drop; 1280 unsigned int tx_handlers_queued; 1281 unsigned int tx_handlers_drop_wep; 1282 unsigned int tx_handlers_drop_not_assoc; 1283 unsigned int tx_handlers_drop_unauth_port; 1284 unsigned int rx_handlers_drop; 1285 unsigned int rx_handlers_queued; 1286 unsigned int rx_handlers_drop_nullfunc; 1287 unsigned int rx_handlers_drop_defrag; 1288 unsigned int tx_expand_skb_head; 1289 unsigned int tx_expand_skb_head_cloned; 1290 unsigned int rx_expand_skb_head_defrag; 1291 unsigned int rx_handlers_fragments; 1292 unsigned int tx_status_drop; 1293 #define I802_DEBUG_INC(c) (c)++ 1294 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1295 #define I802_DEBUG_INC(c) do { } while (0) 1296 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1297 1298 1299 int total_ps_buffered; /* total number of all buffered unicast and 1300 * multicast packets for power saving stations 1301 */ 1302 1303 bool pspolling; 1304 bool offchannel_ps_enabled; 1305 /* 1306 * PS can only be enabled when we have exactly one managed 1307 * interface (and monitors) in PS, this then points there. 1308 */ 1309 struct ieee80211_sub_if_data *ps_sdata; 1310 struct work_struct dynamic_ps_enable_work; 1311 struct work_struct dynamic_ps_disable_work; 1312 struct timer_list dynamic_ps_timer; 1313 struct notifier_block ifa_notifier; 1314 struct notifier_block ifa6_notifier; 1315 1316 /* 1317 * The dynamic ps timeout configured from user space via WEXT - 1318 * this will override whatever chosen by mac80211 internally. 1319 */ 1320 int dynamic_ps_forced_timeout; 1321 1322 int user_power_level; /* in dBm, for all interfaces */ 1323 1324 enum ieee80211_smps_mode smps_mode; 1325 1326 struct work_struct restart_work; 1327 1328 #ifdef CONFIG_MAC80211_DEBUGFS 1329 struct local_debugfsdentries { 1330 struct dentry *rcdir; 1331 struct dentry *keys; 1332 } debugfs; 1333 #endif 1334 1335 /* 1336 * Remain-on-channel support 1337 */ 1338 struct list_head roc_list; 1339 struct work_struct hw_roc_start, hw_roc_done; 1340 unsigned long hw_roc_start_time; 1341 u64 roc_cookie_counter; 1342 1343 struct idr ack_status_frames; 1344 spinlock_t ack_status_lock; 1345 1346 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1347 1348 /* virtual monitor interface */ 1349 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1350 struct cfg80211_chan_def monitor_chandef; 1351 1352 /* extended capabilities provided by mac80211 */ 1353 u8 ext_capa[8]; 1354 1355 /* TDLS channel switch */ 1356 struct work_struct tdls_chsw_work; 1357 struct sk_buff_head skb_queue_tdls_chsw; 1358 }; 1359 1360 static inline struct ieee80211_sub_if_data * 1361 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1362 { 1363 return netdev_priv(dev); 1364 } 1365 1366 static inline struct ieee80211_sub_if_data * 1367 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1368 { 1369 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1370 } 1371 1372 /* this struct represents 802.11n's RA/TID combination */ 1373 struct ieee80211_ra_tid { 1374 u8 ra[ETH_ALEN]; 1375 u16 tid; 1376 }; 1377 1378 /* this struct holds the value parsing from channel switch IE */ 1379 struct ieee80211_csa_ie { 1380 struct cfg80211_chan_def chandef; 1381 u8 mode; 1382 u8 count; 1383 u8 ttl; 1384 u16 pre_value; 1385 }; 1386 1387 /* Parsed Information Elements */ 1388 struct ieee802_11_elems { 1389 const u8 *ie_start; 1390 size_t total_len; 1391 1392 /* pointers to IEs */ 1393 const struct ieee80211_tdls_lnkie *lnk_id; 1394 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1395 const u8 *ext_capab; 1396 const u8 *ssid; 1397 const u8 *supp_rates; 1398 const u8 *ds_params; 1399 const struct ieee80211_tim_ie *tim; 1400 const u8 *challenge; 1401 const u8 *rsn; 1402 const u8 *erp_info; 1403 const u8 *ext_supp_rates; 1404 const u8 *wmm_info; 1405 const u8 *wmm_param; 1406 const struct ieee80211_ht_cap *ht_cap_elem; 1407 const struct ieee80211_ht_operation *ht_operation; 1408 const struct ieee80211_vht_cap *vht_cap_elem; 1409 const struct ieee80211_vht_operation *vht_operation; 1410 const struct ieee80211_meshconf_ie *mesh_config; 1411 const u8 *mesh_id; 1412 const u8 *peering; 1413 const __le16 *awake_window; 1414 const u8 *preq; 1415 const u8 *prep; 1416 const u8 *perr; 1417 const struct ieee80211_rann_ie *rann; 1418 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1419 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1420 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1421 const u8 *country_elem; 1422 const u8 *pwr_constr_elem; 1423 const u8 *cisco_dtpc_elem; 1424 const struct ieee80211_timeout_interval_ie *timeout_int; 1425 const u8 *opmode_notif; 1426 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1427 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1428 1429 /* length of them, respectively */ 1430 u8 ext_capab_len; 1431 u8 ssid_len; 1432 u8 supp_rates_len; 1433 u8 tim_len; 1434 u8 challenge_len; 1435 u8 rsn_len; 1436 u8 ext_supp_rates_len; 1437 u8 wmm_info_len; 1438 u8 wmm_param_len; 1439 u8 mesh_id_len; 1440 u8 peering_len; 1441 u8 preq_len; 1442 u8 prep_len; 1443 u8 perr_len; 1444 u8 country_elem_len; 1445 1446 /* whether a parse error occurred while retrieving these elements */ 1447 bool parse_error; 1448 }; 1449 1450 static inline struct ieee80211_local *hw_to_local( 1451 struct ieee80211_hw *hw) 1452 { 1453 return container_of(hw, struct ieee80211_local, hw); 1454 } 1455 1456 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1457 { 1458 return container_of(txq, struct txq_info, txq); 1459 } 1460 1461 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1462 { 1463 return ether_addr_equal(raddr, addr) || 1464 is_broadcast_ether_addr(raddr); 1465 } 1466 1467 static inline bool 1468 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1469 { 1470 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1471 status->flag & RX_FLAG_MACTIME_END); 1472 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1473 } 1474 1475 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1476 struct ieee80211_rx_status *status, 1477 unsigned int mpdu_len, 1478 unsigned int mpdu_offset); 1479 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1480 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1481 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1482 u32 changed); 1483 void ieee80211_configure_filter(struct ieee80211_local *local); 1484 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1485 1486 /* STA code */ 1487 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1488 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1489 struct cfg80211_auth_request *req); 1490 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1491 struct cfg80211_assoc_request *req); 1492 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1493 struct cfg80211_deauth_request *req); 1494 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1495 struct cfg80211_disassoc_request *req); 1496 void ieee80211_send_pspoll(struct ieee80211_local *local, 1497 struct ieee80211_sub_if_data *sdata); 1498 void ieee80211_recalc_ps(struct ieee80211_local *local); 1499 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1500 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1501 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1502 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1503 struct sk_buff *skb); 1504 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1505 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1506 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1507 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1508 __le16 fc, bool acked); 1509 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1510 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1511 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1512 1513 /* IBSS code */ 1514 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1515 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1516 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1517 const u8 *bssid, const u8 *addr, u32 supp_rates); 1518 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1519 struct cfg80211_ibss_params *params); 1520 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1521 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1522 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1523 struct sk_buff *skb); 1524 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1525 struct cfg80211_csa_settings *csa_settings); 1526 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1527 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1528 1529 /* OCB code */ 1530 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1531 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1532 const u8 *bssid, const u8 *addr, u32 supp_rates); 1533 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1534 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1535 struct ocb_setup *setup); 1536 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1537 1538 /* mesh code */ 1539 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1541 struct sk_buff *skb); 1542 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1543 struct cfg80211_csa_settings *csa_settings); 1544 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1545 1546 /* scan/BSS handling */ 1547 void ieee80211_scan_work(struct work_struct *work); 1548 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1549 const u8 *ssid, u8 ssid_len, 1550 struct ieee80211_channel **channels, 1551 unsigned int n_channels, 1552 enum nl80211_bss_scan_width scan_width); 1553 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1554 struct cfg80211_scan_request *req); 1555 void ieee80211_scan_cancel(struct ieee80211_local *local); 1556 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1557 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1558 1559 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1560 struct ieee80211_bss * 1561 ieee80211_bss_info_update(struct ieee80211_local *local, 1562 struct ieee80211_rx_status *rx_status, 1563 struct ieee80211_mgmt *mgmt, 1564 size_t len, 1565 struct ieee802_11_elems *elems, 1566 struct ieee80211_channel *channel); 1567 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1568 struct ieee80211_bss *bss); 1569 1570 /* scheduled scan handling */ 1571 int 1572 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1573 struct cfg80211_sched_scan_request *req); 1574 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1575 struct cfg80211_sched_scan_request *req); 1576 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1577 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1578 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1579 1580 /* off-channel helpers */ 1581 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1582 void ieee80211_offchannel_return(struct ieee80211_local *local); 1583 void ieee80211_roc_setup(struct ieee80211_local *local); 1584 void ieee80211_start_next_roc(struct ieee80211_local *local); 1585 void ieee80211_roc_purge(struct ieee80211_local *local, 1586 struct ieee80211_sub_if_data *sdata); 1587 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1588 void ieee80211_sw_roc_work(struct work_struct *work); 1589 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1590 1591 /* channel switch handling */ 1592 void ieee80211_csa_finalize_work(struct work_struct *work); 1593 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1594 struct cfg80211_csa_settings *params); 1595 1596 /* interface handling */ 1597 int ieee80211_iface_init(void); 1598 void ieee80211_iface_exit(void); 1599 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1600 unsigned char name_assign_type, 1601 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1602 struct vif_params *params); 1603 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1604 enum nl80211_iftype type); 1605 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1606 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1607 u32 ieee80211_idle_off(struct ieee80211_local *local); 1608 void ieee80211_recalc_idle(struct ieee80211_local *local); 1609 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1610 const int offset); 1611 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1612 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1613 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1614 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1615 1616 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1617 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1618 bool update_bss); 1619 1620 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1621 { 1622 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1623 } 1624 1625 /* tx handling */ 1626 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1627 void ieee80211_tx_pending(unsigned long data); 1628 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1629 struct net_device *dev); 1630 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1631 struct net_device *dev); 1632 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1633 struct net_device *dev, 1634 u32 info_flags); 1635 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1636 struct sk_buff_head *skbs); 1637 struct sk_buff * 1638 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1639 struct sk_buff *skb, u32 info_flags); 1640 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1641 struct ieee80211_supported_band *sband, 1642 int retry_count, int shift, bool send_to_cooked); 1643 1644 void ieee80211_check_fast_xmit(struct sta_info *sta); 1645 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1646 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1647 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1648 1649 /* HT */ 1650 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1651 struct ieee80211_sta_ht_cap *ht_cap); 1652 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1653 struct ieee80211_supported_band *sband, 1654 const struct ieee80211_ht_cap *ht_cap_ie, 1655 struct sta_info *sta); 1656 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1657 const u8 *da, u16 tid, 1658 u16 initiator, u16 reason_code); 1659 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1660 enum ieee80211_smps_mode smps, const u8 *da, 1661 const u8 *bssid); 1662 void ieee80211_request_smps_ap_work(struct work_struct *work); 1663 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1664 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1665 enum ieee80211_smps_mode smps_mode_new); 1666 1667 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1668 u16 initiator, u16 reason, bool stop); 1669 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1670 u16 initiator, u16 reason, bool stop); 1671 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1672 u8 dialog_token, u16 timeout, 1673 u16 start_seq_num, u16 ba_policy, u16 tid, 1674 u16 buf_size, bool tx, bool auto_seq); 1675 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1676 enum ieee80211_agg_stop_reason reason); 1677 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1678 struct sta_info *sta, 1679 struct ieee80211_mgmt *mgmt, size_t len); 1680 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1681 struct sta_info *sta, 1682 struct ieee80211_mgmt *mgmt, 1683 size_t len); 1684 void ieee80211_process_addba_request(struct ieee80211_local *local, 1685 struct sta_info *sta, 1686 struct ieee80211_mgmt *mgmt, 1687 size_t len); 1688 1689 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1690 enum ieee80211_agg_stop_reason reason); 1691 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1692 enum ieee80211_agg_stop_reason reason); 1693 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1694 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1695 void ieee80211_ba_session_work(struct work_struct *work); 1696 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1697 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1698 1699 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1700 1701 /* VHT */ 1702 void 1703 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1704 struct ieee80211_supported_band *sband, 1705 const struct ieee80211_vht_cap *vht_cap_ie, 1706 struct sta_info *sta); 1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1708 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1709 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1710 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1711 struct sta_info *sta, u8 opmode, 1712 enum ieee80211_band band, bool nss_only); 1713 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1714 struct sta_info *sta, u8 opmode, 1715 enum ieee80211_band band, bool nss_only); 1716 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1717 struct ieee80211_sta_vht_cap *vht_cap); 1718 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1719 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1720 1721 /* Spectrum management */ 1722 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1723 struct ieee80211_mgmt *mgmt, 1724 size_t len); 1725 /** 1726 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1727 * @sdata: the sdata of the interface which has received the frame 1728 * @elems: parsed 802.11 elements received with the frame 1729 * @current_band: indicates the current band 1730 * @sta_flags: contains information about own capabilities and restrictions 1731 * to decide which channel switch announcements can be accepted. Only the 1732 * following subset of &enum ieee80211_sta_flags are evaluated: 1733 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1734 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1735 * %IEEE80211_STA_DISABLE_160MHZ. 1736 * @bssid: the currently connected bssid (for reporting) 1737 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1738 All of them will be filled with if success only. 1739 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1740 */ 1741 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1742 struct ieee802_11_elems *elems, 1743 enum ieee80211_band current_band, 1744 u32 sta_flags, u8 *bssid, 1745 struct ieee80211_csa_ie *csa_ie); 1746 1747 /* Suspend/resume and hw reconfiguration */ 1748 int ieee80211_reconfig(struct ieee80211_local *local); 1749 void ieee80211_stop_device(struct ieee80211_local *local); 1750 1751 int __ieee80211_suspend(struct ieee80211_hw *hw, 1752 struct cfg80211_wowlan *wowlan); 1753 1754 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1755 { 1756 struct ieee80211_local *local = hw_to_local(hw); 1757 1758 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1759 !test_bit(SCAN_COMPLETED, &local->scanning), 1760 "%s: resume with hardware scan still in progress\n", 1761 wiphy_name(hw->wiphy)); 1762 1763 return ieee80211_reconfig(hw_to_local(hw)); 1764 } 1765 1766 /* utility functions/constants */ 1767 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1768 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1769 int rate, int erp, int short_preamble, 1770 int shift); 1771 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1772 bool bss_notify, bool enable_qos); 1773 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1774 struct sta_info *sta, struct sk_buff *skb); 1775 1776 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1777 struct sk_buff *skb, int tid, 1778 enum ieee80211_band band); 1779 1780 static inline void 1781 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1782 struct sk_buff *skb, int tid, 1783 enum ieee80211_band band) 1784 { 1785 rcu_read_lock(); 1786 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1787 rcu_read_unlock(); 1788 } 1789 1790 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1791 struct sk_buff *skb, int tid) 1792 { 1793 struct ieee80211_chanctx_conf *chanctx_conf; 1794 1795 rcu_read_lock(); 1796 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1797 if (WARN_ON(!chanctx_conf)) { 1798 rcu_read_unlock(); 1799 kfree_skb(skb); 1800 return; 1801 } 1802 1803 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1804 chanctx_conf->def.chan->band); 1805 rcu_read_unlock(); 1806 } 1807 1808 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1809 struct sk_buff *skb) 1810 { 1811 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1812 ieee80211_tx_skb_tid(sdata, skb, 7); 1813 } 1814 1815 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1816 struct ieee802_11_elems *elems, 1817 u64 filter, u32 crc); 1818 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1819 bool action, 1820 struct ieee802_11_elems *elems) 1821 { 1822 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1823 } 1824 1825 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1826 { 1827 struct sk_buff *tail = skb_peek_tail(frames); 1828 struct ieee80211_rx_status *status; 1829 1830 if (!tail) 1831 return false; 1832 1833 status = IEEE80211_SKB_RXCB(tail); 1834 if (status->flag & RX_FLAG_AMSDU_MORE) 1835 return false; 1836 1837 return true; 1838 } 1839 1840 extern const int ieee802_1d_to_ac[8]; 1841 1842 static inline int ieee80211_ac_from_tid(int tid) 1843 { 1844 return ieee802_1d_to_ac[tid & 7]; 1845 } 1846 1847 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1848 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1849 void ieee80211_dynamic_ps_timer(unsigned long data); 1850 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1851 struct ieee80211_sub_if_data *sdata, 1852 bool powersave); 1853 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1854 struct ieee80211_hdr *hdr); 1855 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1856 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1857 1858 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1859 unsigned long queues, 1860 enum queue_stop_reason reason, 1861 bool refcounted); 1862 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1863 struct ieee80211_sub_if_data *sdata, 1864 enum queue_stop_reason reason); 1865 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1866 struct ieee80211_sub_if_data *sdata, 1867 enum queue_stop_reason reason); 1868 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1869 unsigned long queues, 1870 enum queue_stop_reason reason, 1871 bool refcounted); 1872 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1873 enum queue_stop_reason reason, 1874 bool refcounted); 1875 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1876 enum queue_stop_reason reason, 1877 bool refcounted); 1878 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1879 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1880 struct sk_buff *skb); 1881 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1882 struct sk_buff_head *skbs); 1883 void ieee80211_flush_queues(struct ieee80211_local *local, 1884 struct ieee80211_sub_if_data *sdata, bool drop); 1885 void __ieee80211_flush_queues(struct ieee80211_local *local, 1886 struct ieee80211_sub_if_data *sdata, 1887 unsigned int queues, bool drop); 1888 1889 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1890 { 1891 /* 1892 * If quiescing is set, we are racing with __ieee80211_suspend. 1893 * __ieee80211_suspend flushes the workers after setting quiescing, 1894 * and we check quiescing / suspended before enqueing new workers. 1895 * We should abort the worker to avoid the races below. 1896 */ 1897 if (local->quiescing) 1898 return false; 1899 1900 /* 1901 * We might already be suspended if the following scenario occurs: 1902 * __ieee80211_suspend Control path 1903 * 1904 * if (local->quiescing) 1905 * return; 1906 * local->quiescing = true; 1907 * flush_workqueue(); 1908 * queue_work(...); 1909 * local->suspended = true; 1910 * local->quiescing = false; 1911 * worker starts running... 1912 */ 1913 if (local->suspended) 1914 return false; 1915 1916 return true; 1917 } 1918 1919 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1920 struct sta_info *sta, 1921 struct txq_info *txq, int tid); 1922 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1923 u16 transaction, u16 auth_alg, u16 status, 1924 const u8 *extra, size_t extra_len, const u8 *bssid, 1925 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1926 u32 tx_flags); 1927 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1928 const u8 *bssid, u16 stype, u16 reason, 1929 bool send_frame, u8 *frame_buf); 1930 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1931 size_t buffer_len, 1932 struct ieee80211_scan_ies *ie_desc, 1933 const u8 *ie, size_t ie_len, 1934 u8 bands_used, u32 *rate_masks, 1935 struct cfg80211_chan_def *chandef); 1936 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1937 const u8 *src, const u8 *dst, 1938 u32 ratemask, 1939 struct ieee80211_channel *chan, 1940 const u8 *ssid, size_t ssid_len, 1941 const u8 *ie, size_t ie_len, 1942 bool directed); 1943 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1944 const u8 *src, const u8 *dst, 1945 const u8 *ssid, size_t ssid_len, 1946 const u8 *ie, size_t ie_len, 1947 u32 ratemask, bool directed, u32 tx_flags, 1948 struct ieee80211_channel *channel, bool scan); 1949 1950 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1951 struct ieee802_11_elems *elems, 1952 enum ieee80211_band band, u32 *basic_rates); 1953 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1954 enum ieee80211_smps_mode smps_mode); 1955 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1956 enum ieee80211_smps_mode smps_mode); 1957 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1958 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1959 1960 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1961 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1962 u16 cap); 1963 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1964 const struct cfg80211_chan_def *chandef, 1965 u16 prot_mode, bool rifs_mode); 1966 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1967 u32 cap); 1968 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1969 const struct cfg80211_chan_def *chandef); 1970 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1971 const struct ieee80211_supported_band *sband, 1972 const u8 *srates, int srates_len, u32 *rates); 1973 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1974 struct sk_buff *skb, bool need_basic, 1975 enum ieee80211_band band); 1976 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1977 struct sk_buff *skb, bool need_basic, 1978 enum ieee80211_band band); 1979 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1980 1981 /* channel management */ 1982 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1983 const struct ieee80211_ht_operation *ht_oper, 1984 struct cfg80211_chan_def *chandef); 1985 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1986 const struct ieee80211_vht_operation *oper, 1987 struct cfg80211_chan_def *chandef); 1988 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1989 1990 int __must_check 1991 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1992 const struct cfg80211_chan_def *chandef, 1993 enum ieee80211_chanctx_mode mode); 1994 int __must_check 1995 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1996 const struct cfg80211_chan_def *chandef, 1997 enum ieee80211_chanctx_mode mode, 1998 bool radar_required); 1999 int __must_check 2000 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2001 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2002 2003 int __must_check 2004 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2005 const struct cfg80211_chan_def *chandef, 2006 u32 *changed); 2007 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2008 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2009 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2010 bool clear); 2011 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2012 struct ieee80211_chanctx *ctx); 2013 2014 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2015 struct ieee80211_chanctx *chanctx); 2016 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2017 struct ieee80211_chanctx *ctx); 2018 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2019 2020 void ieee80211_dfs_cac_timer(unsigned long data); 2021 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2022 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2023 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2024 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2025 struct cfg80211_csa_settings *csa_settings); 2026 2027 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2028 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2029 const struct ieee80211_cipher_scheme * 2030 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2031 enum nl80211_iftype iftype); 2032 int ieee80211_cs_headroom(struct ieee80211_local *local, 2033 struct cfg80211_crypto_settings *crypto, 2034 enum nl80211_iftype iftype); 2035 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2036 struct ieee80211_sub_if_data *sdata); 2037 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2038 const struct cfg80211_chan_def *chandef, 2039 enum ieee80211_chanctx_mode chanmode, 2040 u8 radar_detect); 2041 int ieee80211_max_num_channels(struct ieee80211_local *local); 2042 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2043 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2044 struct ieee80211_chanctx *ctx); 2045 2046 /* TDLS */ 2047 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2048 const u8 *peer, u8 action_code, u8 dialog_token, 2049 u16 status_code, u32 peer_capability, 2050 bool initiator, const u8 *extra_ies, 2051 size_t extra_ies_len); 2052 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2053 const u8 *peer, enum nl80211_tdls_operation oper); 2054 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2055 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2056 const u8 *addr, u8 oper_class, 2057 struct cfg80211_chan_def *chandef); 2058 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2059 struct net_device *dev, 2060 const u8 *addr); 2061 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2062 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2063 2064 extern const struct ethtool_ops ieee80211_ethtool_ops; 2065 2066 #ifdef CONFIG_MAC80211_NOINLINE 2067 #define debug_noinline noinline 2068 #else 2069 #define debug_noinline 2070 #endif 2071 2072 #endif /* IEEE80211_I_H */ 2073