1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef IEEE80211_I_H 14 #define IEEE80211_I_H 15 16 #include <linux/kernel.h> 17 #include <linux/device.h> 18 #include <linux/if_ether.h> 19 #include <linux/interrupt.h> 20 #include <linux/list.h> 21 #include <linux/netdevice.h> 22 #include <linux/skbuff.h> 23 #include <linux/workqueue.h> 24 #include <linux/types.h> 25 #include <linux/spinlock.h> 26 #include <linux/etherdevice.h> 27 #include <linux/leds.h> 28 #include <linux/idr.h> 29 #include <linux/rhashtable.h> 30 #include <net/ieee80211_radiotap.h> 31 #include <net/cfg80211.h> 32 #include <net/mac80211.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 37 struct ieee80211_local; 38 39 /* Maximum number of broadcast/multicast frames to buffer when some of the 40 * associated stations are using power saving. */ 41 #define AP_MAX_BC_BUFFER 128 42 43 /* Maximum number of frames buffered to all STAs, including multicast frames. 44 * Note: increasing this limit increases the potential memory requirement. Each 45 * frame can be up to about 2 kB long. */ 46 #define TOTAL_MAX_TX_BUFFER 512 47 48 /* Required encryption head and tailroom */ 49 #define IEEE80211_ENCRYPT_HEADROOM 8 50 #define IEEE80211_ENCRYPT_TAILROOM 18 51 52 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 53 * reception of at least three fragmented frames. This limit can be increased 54 * by changing this define, at the cost of slower frame reassembly and 55 * increased memory use (about 2 kB of RAM per entry). */ 56 #define IEEE80211_FRAGMENT_MAX 4 57 58 /* power level hasn't been configured (or set to automatic) */ 59 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 60 61 /* 62 * Some APs experience problems when working with U-APSD. Decreasing the 63 * probability of that happening by using legacy mode for all ACs but VO isn't 64 * enough. 65 * 66 * Cisco 4410N originally forced us to enable VO by default only because it 67 * treated non-VO ACs as legacy. 68 * 69 * However some APs (notably Netgear R7000) silently reclassify packets to 70 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 71 * clients would never see some frames (e.g. ARP responses) or would fetch them 72 * accidentally after a long time. 73 * 74 * It makes little sense to enable u-APSD queues by default because it needs 75 * userspace applications to be aware of it to actually take advantage of the 76 * possible additional powersavings. Implicitly depending on driver autotrigger 77 * frame support doesn't make much sense. 78 */ 79 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 80 81 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 82 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 struct ieee80211_fragment_entry { 87 struct sk_buff_head skb_list; 88 unsigned long first_frag_time; 89 u16 seq; 90 u16 extra_len; 91 u16 last_frag; 92 u8 rx_queue; 93 bool ccmp; /* Whether fragments were encrypted with CCMP */ 94 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 95 }; 96 97 98 struct ieee80211_bss { 99 u32 device_ts_beacon, device_ts_presp; 100 101 bool wmm_used; 102 bool uapsd_supported; 103 104 #define IEEE80211_MAX_SUPP_RATES 32 105 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 106 size_t supp_rates_len; 107 struct ieee80211_rate *beacon_rate; 108 109 /* 110 * During association, we save an ERP value from a probe response so 111 * that we can feed ERP info to the driver when handling the 112 * association completes. these fields probably won't be up-to-date 113 * otherwise, you probably don't want to use them. 114 */ 115 bool has_erp_value; 116 u8 erp_value; 117 118 /* Keep track of the corruption of the last beacon/probe response. */ 119 u8 corrupt_data; 120 121 /* Keep track of what bits of information we have valid info for. */ 122 u8 valid_data; 123 }; 124 125 /** 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 129 * 130 * These are bss flags that are attached to a bss in the 131 * @corrupt_data field of &struct ieee80211_bss. 132 */ 133 enum ieee80211_bss_corrupt_data_flags { 134 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 135 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 136 }; 137 138 /** 139 * enum ieee80211_valid_data_flags - BSS valid data flags 140 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 142 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 143 * 144 * These are bss flags that are attached to a bss in the 145 * @valid_data field of &struct ieee80211_bss. They show which parts 146 * of the data structure were received as a result of an un-corrupted 147 * beacon/probe response. 148 */ 149 enum ieee80211_bss_valid_data_flags { 150 IEEE80211_BSS_VALID_WMM = BIT(1), 151 IEEE80211_BSS_VALID_RATES = BIT(2), 152 IEEE80211_BSS_VALID_ERP = BIT(3) 153 }; 154 155 typedef unsigned __bitwise__ ieee80211_tx_result; 156 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 157 #define TX_DROP ((__force ieee80211_tx_result) 1u) 158 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 159 160 #define IEEE80211_TX_UNICAST BIT(1) 161 #define IEEE80211_TX_PS_BUFFERED BIT(2) 162 163 struct ieee80211_tx_data { 164 struct sk_buff *skb; 165 struct sk_buff_head skbs; 166 struct ieee80211_local *local; 167 struct ieee80211_sub_if_data *sdata; 168 struct sta_info *sta; 169 struct ieee80211_key *key; 170 struct ieee80211_tx_rate rate; 171 172 unsigned int flags; 173 }; 174 175 176 typedef unsigned __bitwise__ ieee80211_rx_result; 177 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 178 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 179 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 180 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 181 182 /** 183 * enum ieee80211_packet_rx_flags - packet RX flags 184 * @IEEE80211_RX_AMSDU: a-MSDU packet 185 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 186 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 187 * 188 * These are per-frame flags that are attached to a frame in the 189 * @rx_flags field of &struct ieee80211_rx_status. 190 */ 191 enum ieee80211_packet_rx_flags { 192 IEEE80211_RX_AMSDU = BIT(3), 193 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 194 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 195 }; 196 197 /** 198 * enum ieee80211_rx_flags - RX data flags 199 * 200 * @IEEE80211_RX_CMNTR: received on cooked monitor already 201 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 202 * to cfg80211_report_obss_beacon(). 203 * 204 * These flags are used across handling multiple interfaces 205 * for a single frame. 206 */ 207 enum ieee80211_rx_flags { 208 IEEE80211_RX_CMNTR = BIT(0), 209 IEEE80211_RX_BEACON_REPORTED = BIT(1), 210 }; 211 212 struct ieee80211_rx_data { 213 struct napi_struct *napi; 214 struct sk_buff *skb; 215 struct ieee80211_local *local; 216 struct ieee80211_sub_if_data *sdata; 217 struct sta_info *sta; 218 struct ieee80211_key *key; 219 220 unsigned int flags; 221 222 /* 223 * Index into sequence numbers array, 0..16 224 * since the last (16) is used for non-QoS, 225 * will be 16 on non-QoS frames. 226 */ 227 int seqno_idx; 228 229 /* 230 * Index into the security IV/PN arrays, 0..16 231 * since the last (16) is used for CCMP-encrypted 232 * management frames, will be set to 16 on mgmt 233 * frames and 0 on non-QoS frames. 234 */ 235 int security_idx; 236 237 u32 tkip_iv32; 238 u16 tkip_iv16; 239 }; 240 241 struct ieee80211_csa_settings { 242 const u16 *counter_offsets_beacon; 243 const u16 *counter_offsets_presp; 244 245 int n_counter_offsets_beacon; 246 int n_counter_offsets_presp; 247 248 u8 count; 249 }; 250 251 struct beacon_data { 252 u8 *head, *tail; 253 int head_len, tail_len; 254 struct ieee80211_meshconf_ie *meshconf; 255 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 256 u8 csa_current_counter; 257 struct rcu_head rcu_head; 258 }; 259 260 struct probe_resp { 261 struct rcu_head rcu_head; 262 int len; 263 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 264 u8 data[0]; 265 }; 266 267 struct ps_data { 268 /* yes, this looks ugly, but guarantees that we can later use 269 * bitmap_empty :) 270 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 271 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 272 __aligned(__alignof__(unsigned long)); 273 struct sk_buff_head bc_buf; 274 atomic_t num_sta_ps; /* number of stations in PS mode */ 275 int dtim_count; 276 bool dtim_bc_mc; 277 }; 278 279 struct ieee80211_if_ap { 280 struct beacon_data __rcu *beacon; 281 struct probe_resp __rcu *probe_resp; 282 283 /* to be used after channel switch. */ 284 struct cfg80211_beacon_data *next_beacon; 285 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 286 287 struct ps_data ps; 288 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 289 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 290 driver_smps_mode; /* smps mode request */ 291 292 struct work_struct request_smps_work; 293 }; 294 295 struct ieee80211_if_wds { 296 struct sta_info *sta; 297 u8 remote_addr[ETH_ALEN]; 298 }; 299 300 struct ieee80211_if_vlan { 301 struct list_head list; /* write-protected with RTNL and local->mtx */ 302 303 /* used for all tx if the VLAN is configured to 4-addr mode */ 304 struct sta_info __rcu *sta; 305 }; 306 307 struct mesh_stats { 308 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 309 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 310 __u32 fwded_frames; /* Mesh total forwarded frames */ 311 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 312 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 313 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 314 }; 315 316 #define PREQ_Q_F_START 0x1 317 #define PREQ_Q_F_REFRESH 0x2 318 struct mesh_preq_queue { 319 struct list_head list; 320 u8 dst[ETH_ALEN]; 321 u8 flags; 322 }; 323 324 struct ieee80211_roc_work { 325 struct list_head list; 326 struct list_head dependents; 327 328 struct delayed_work work; 329 330 struct ieee80211_sub_if_data *sdata; 331 332 struct ieee80211_channel *chan; 333 334 bool started, abort, hw_begun, notified; 335 bool to_be_freed; 336 bool on_channel; 337 338 unsigned long hw_start_time; 339 340 u32 duration, req_duration; 341 struct sk_buff *frame; 342 u64 cookie, mgmt_tx_cookie; 343 enum ieee80211_roc_type type; 344 }; 345 346 /* flags used in struct ieee80211_if_managed.flags */ 347 enum ieee80211_sta_flags { 348 IEEE80211_STA_CONNECTION_POLL = BIT(1), 349 IEEE80211_STA_CONTROL_PORT = BIT(2), 350 IEEE80211_STA_DISABLE_HT = BIT(4), 351 IEEE80211_STA_MFP_ENABLED = BIT(6), 352 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 353 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 354 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 355 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 356 IEEE80211_STA_DISABLE_VHT = BIT(11), 357 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 358 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 359 IEEE80211_STA_DISABLE_WMM = BIT(14), 360 IEEE80211_STA_ENABLE_RRM = BIT(15), 361 }; 362 363 struct ieee80211_mgd_auth_data { 364 struct cfg80211_bss *bss; 365 unsigned long timeout; 366 int tries; 367 u16 algorithm, expected_transaction; 368 369 u8 key[WLAN_KEY_LEN_WEP104]; 370 u8 key_len, key_idx; 371 bool done; 372 bool timeout_started; 373 374 u16 sae_trans, sae_status; 375 size_t data_len; 376 u8 data[]; 377 }; 378 379 struct ieee80211_mgd_assoc_data { 380 struct cfg80211_bss *bss; 381 const u8 *supp_rates; 382 383 unsigned long timeout; 384 int tries; 385 386 u16 capability; 387 u8 prev_bssid[ETH_ALEN]; 388 u8 ssid[IEEE80211_MAX_SSID_LEN]; 389 u8 ssid_len; 390 u8 supp_rates_len; 391 bool wmm, uapsd; 392 bool need_beacon; 393 bool synced; 394 bool timeout_started; 395 396 u8 ap_ht_param; 397 398 struct ieee80211_vht_cap ap_vht_cap; 399 400 size_t ie_len; 401 u8 ie[]; 402 }; 403 404 struct ieee80211_sta_tx_tspec { 405 /* timestamp of the first packet in the time slice */ 406 unsigned long time_slice_start; 407 408 u32 admitted_time; /* in usecs, unlike over the air */ 409 u8 tsid; 410 s8 up; /* signed to be able to invalidate with -1 during teardown */ 411 412 /* consumed TX time in microseconds in the time slice */ 413 u32 consumed_tx_time; 414 enum { 415 TX_TSPEC_ACTION_NONE = 0, 416 TX_TSPEC_ACTION_DOWNGRADE, 417 TX_TSPEC_ACTION_STOP_DOWNGRADE, 418 } action; 419 bool downgraded; 420 }; 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 /* Signal strength from the last Beacon frame in the current BSS. */ 494 int last_beacon_signal; 495 496 /* 497 * Weighted average of the signal strength from Beacon frames in the 498 * current BSS. This is in units of 1/16 of the signal unit to maintain 499 * accuracy and to speed up calculations, i.e., the value need to be 500 * divided by 16 to get the actual value. 501 */ 502 int ave_beacon_signal; 503 504 /* 505 * Number of Beacon frames used in ave_beacon_signal. This can be used 506 * to avoid generating less reliable cqm events that would be based 507 * only on couple of received frames. 508 */ 509 unsigned int count_beacon_signal; 510 511 /* 512 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 513 * that triggered a cqm event. 0 indicates that no event has been 514 * generated for the current association. 515 */ 516 int last_cqm_event_signal; 517 518 /* 519 * State variables for keeping track of RSSI of the AP currently 520 * connected to and informing driver when RSSI has gone 521 * below/above a certain threshold. 522 */ 523 int rssi_min_thold, rssi_max_thold; 524 int last_ave_beacon_signal; 525 526 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 527 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 528 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 529 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 530 531 /* TDLS support */ 532 u8 tdls_peer[ETH_ALEN] __aligned(2); 533 struct delayed_work tdls_peer_del_work; 534 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 535 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 536 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 537 bool tdls_chan_switch_prohibited; 538 539 /* WMM-AC TSPEC support */ 540 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 541 /* Use a separate work struct so that we can do something here 542 * while the sdata->work is flushing the queues, for example. 543 * otherwise, in scenarios where we hardly get any traffic out 544 * on the BE queue, but there's a lot of VO traffic, we might 545 * get stuck in a downgraded situation and flush takes forever. 546 */ 547 struct delayed_work tx_tspec_wk; 548 }; 549 550 struct ieee80211_if_ibss { 551 struct timer_list timer; 552 struct work_struct csa_connection_drop_work; 553 554 unsigned long last_scan_completed; 555 556 u32 basic_rates; 557 558 bool fixed_bssid; 559 bool fixed_channel; 560 bool privacy; 561 562 bool control_port; 563 bool userspace_handles_dfs; 564 565 u8 bssid[ETH_ALEN] __aligned(2); 566 u8 ssid[IEEE80211_MAX_SSID_LEN]; 567 u8 ssid_len, ie_len; 568 u8 *ie; 569 struct cfg80211_chan_def chandef; 570 571 unsigned long ibss_join_req; 572 /* probe response/beacon for IBSS */ 573 struct beacon_data __rcu *presp; 574 575 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 576 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 577 578 spinlock_t incomplete_lock; 579 struct list_head incomplete_stations; 580 581 enum { 582 IEEE80211_IBSS_MLME_SEARCH, 583 IEEE80211_IBSS_MLME_JOINED, 584 } state; 585 }; 586 587 /** 588 * struct ieee80211_if_ocb - OCB mode state 589 * 590 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 591 * @wrkq_flags: OCB deferred task action 592 * @incomplete_lock: delayed STA insertion lock 593 * @incomplete_stations: list of STAs waiting for delayed insertion 594 * @joined: indication if the interface is connected to an OCB network 595 */ 596 struct ieee80211_if_ocb { 597 struct timer_list housekeeping_timer; 598 unsigned long wrkq_flags; 599 600 spinlock_t incomplete_lock; 601 struct list_head incomplete_stations; 602 603 bool joined; 604 }; 605 606 /** 607 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 608 * 609 * these declarations define the interface, which enables 610 * vendor-specific mesh synchronization 611 * 612 */ 613 struct ieee802_11_elems; 614 struct ieee80211_mesh_sync_ops { 615 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 616 u16 stype, 617 struct ieee80211_mgmt *mgmt, 618 struct ieee802_11_elems *elems, 619 struct ieee80211_rx_status *rx_status); 620 621 /* should be called with beacon_data under RCU read lock */ 622 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 623 struct beacon_data *beacon); 624 /* add other framework functions here */ 625 }; 626 627 struct mesh_csa_settings { 628 struct rcu_head rcu_head; 629 struct cfg80211_csa_settings settings; 630 }; 631 632 struct ieee80211_if_mesh { 633 struct timer_list housekeeping_timer; 634 struct timer_list mesh_path_timer; 635 struct timer_list mesh_path_root_timer; 636 637 unsigned long wrkq_flags; 638 unsigned long mbss_changed; 639 640 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 641 size_t mesh_id_len; 642 /* Active Path Selection Protocol Identifier */ 643 u8 mesh_pp_id; 644 /* Active Path Selection Metric Identifier */ 645 u8 mesh_pm_id; 646 /* Congestion Control Mode Identifier */ 647 u8 mesh_cc_id; 648 /* Synchronization Protocol Identifier */ 649 u8 mesh_sp_id; 650 /* Authentication Protocol Identifier */ 651 u8 mesh_auth_id; 652 /* Local mesh Sequence Number */ 653 u32 sn; 654 /* Last used PREQ ID */ 655 u32 preq_id; 656 atomic_t mpaths; 657 /* Timestamp of last SN update */ 658 unsigned long last_sn_update; 659 /* Time when it's ok to send next PERR */ 660 unsigned long next_perr; 661 /* Timestamp of last PREQ sent */ 662 unsigned long last_preq; 663 struct mesh_rmc *rmc; 664 spinlock_t mesh_preq_queue_lock; 665 struct mesh_preq_queue preq_queue; 666 int preq_queue_len; 667 struct mesh_stats mshstats; 668 struct mesh_config mshcfg; 669 atomic_t estab_plinks; 670 u32 mesh_seqnum; 671 bool accepting_plinks; 672 int num_gates; 673 struct beacon_data __rcu *beacon; 674 const u8 *ie; 675 u8 ie_len; 676 enum { 677 IEEE80211_MESH_SEC_NONE = 0x0, 678 IEEE80211_MESH_SEC_AUTHED = 0x1, 679 IEEE80211_MESH_SEC_SECURED = 0x2, 680 } security; 681 bool user_mpm; 682 /* Extensible Synchronization Framework */ 683 const struct ieee80211_mesh_sync_ops *sync_ops; 684 s64 sync_offset_clockdrift_max; 685 spinlock_t sync_offset_lock; 686 bool adjusting_tbtt; 687 /* mesh power save */ 688 enum nl80211_mesh_power_mode nonpeer_pm; 689 int ps_peers_light_sleep; 690 int ps_peers_deep_sleep; 691 struct ps_data ps; 692 /* Channel Switching Support */ 693 struct mesh_csa_settings __rcu *csa; 694 enum { 695 IEEE80211_MESH_CSA_ROLE_NONE, 696 IEEE80211_MESH_CSA_ROLE_INIT, 697 IEEE80211_MESH_CSA_ROLE_REPEATER, 698 } csa_role; 699 u8 chsw_ttl; 700 u16 pre_value; 701 702 /* offset from skb->data while building IE */ 703 int meshconf_offset; 704 }; 705 706 #ifdef CONFIG_MAC80211_MESH 707 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 708 do { (msh)->mshstats.name++; } while (0) 709 #else 710 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 711 do { } while (0) 712 #endif 713 714 /** 715 * enum ieee80211_sub_if_data_flags - virtual interface flags 716 * 717 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 718 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 719 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 720 * associated stations and deliver multicast frames both 721 * back to wireless media and to the local net stack. 722 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 723 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 724 * @IEEE80211_SDATA_MU_MIMO_OWNER: indicates interface owns MU-MIMO capability 725 */ 726 enum ieee80211_sub_if_data_flags { 727 IEEE80211_SDATA_ALLMULTI = BIT(0), 728 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 729 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 730 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 731 IEEE80211_SDATA_IN_DRIVER = BIT(5), 732 IEEE80211_SDATA_MU_MIMO_OWNER = BIT(6), 733 }; 734 735 /** 736 * enum ieee80211_sdata_state_bits - virtual interface state bits 737 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 738 * mirrors netif_running() but is separate for interface type 739 * change handling while the interface is up 740 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 741 * mode, so queues are stopped 742 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 743 * to offchannel, reset when offchannel returns 744 */ 745 enum ieee80211_sdata_state_bits { 746 SDATA_STATE_RUNNING, 747 SDATA_STATE_OFFCHANNEL, 748 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 749 }; 750 751 /** 752 * enum ieee80211_chanctx_mode - channel context configuration mode 753 * 754 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 755 * multiple interfaces 756 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 757 * only by a single interface. This can be used for example for 758 * non-fixed channel IBSS. 759 */ 760 enum ieee80211_chanctx_mode { 761 IEEE80211_CHANCTX_SHARED, 762 IEEE80211_CHANCTX_EXCLUSIVE 763 }; 764 765 /** 766 * enum ieee80211_chanctx_replace_state - channel context replacement state 767 * 768 * This is used for channel context in-place reservations that require channel 769 * context switch/swap. 770 * 771 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 772 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 773 * by a (not yet registered) channel context pointed by %replace_ctx. 774 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 775 * replaces an existing channel context pointed to by %replace_ctx. 776 */ 777 enum ieee80211_chanctx_replace_state { 778 IEEE80211_CHANCTX_REPLACE_NONE, 779 IEEE80211_CHANCTX_WILL_BE_REPLACED, 780 IEEE80211_CHANCTX_REPLACES_OTHER, 781 }; 782 783 struct ieee80211_chanctx { 784 struct list_head list; 785 struct rcu_head rcu_head; 786 787 struct list_head assigned_vifs; 788 struct list_head reserved_vifs; 789 790 enum ieee80211_chanctx_replace_state replace_state; 791 struct ieee80211_chanctx *replace_ctx; 792 793 enum ieee80211_chanctx_mode mode; 794 bool driver_present; 795 796 struct ieee80211_chanctx_conf conf; 797 }; 798 799 struct mac80211_qos_map { 800 struct cfg80211_qos_map qos_map; 801 struct rcu_head rcu_head; 802 }; 803 804 enum txq_info_flags { 805 IEEE80211_TXQ_STOP, 806 IEEE80211_TXQ_AMPDU, 807 }; 808 809 struct txq_info { 810 struct sk_buff_head queue; 811 unsigned long flags; 812 813 /* keep last! */ 814 struct ieee80211_txq txq; 815 }; 816 817 struct ieee80211_sub_if_data { 818 struct list_head list; 819 820 struct wireless_dev wdev; 821 822 /* keys */ 823 struct list_head key_list; 824 825 /* count for keys needing tailroom space allocation */ 826 int crypto_tx_tailroom_needed_cnt; 827 int crypto_tx_tailroom_pending_dec; 828 struct delayed_work dec_tailroom_needed_wk; 829 830 struct net_device *dev; 831 struct ieee80211_local *local; 832 833 unsigned int flags; 834 835 unsigned long state; 836 837 char name[IFNAMSIZ]; 838 839 /* Fragment table for host-based reassembly */ 840 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 841 unsigned int fragment_next; 842 843 /* TID bitmap for NoAck policy */ 844 u16 noack_map; 845 846 /* bit field of ACM bits (BIT(802.1D tag)) */ 847 u8 wmm_acm; 848 849 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 850 struct ieee80211_key __rcu *default_unicast_key; 851 struct ieee80211_key __rcu *default_multicast_key; 852 struct ieee80211_key __rcu *default_mgmt_key; 853 854 u16 sequence_number; 855 __be16 control_port_protocol; 856 bool control_port_no_encrypt; 857 int encrypt_headroom; 858 859 atomic_t txqs_len[IEEE80211_NUM_ACS]; 860 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 861 struct mac80211_qos_map __rcu *qos_map; 862 863 struct work_struct csa_finalize_work; 864 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 865 struct cfg80211_chan_def csa_chandef; 866 867 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 868 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 869 870 /* context reservation -- protected with chanctx_mtx */ 871 struct ieee80211_chanctx *reserved_chanctx; 872 struct cfg80211_chan_def reserved_chandef; 873 bool reserved_radar_required; 874 bool reserved_ready; 875 876 /* used to reconfigure hardware SM PS */ 877 struct work_struct recalc_smps; 878 879 struct work_struct work; 880 struct sk_buff_head skb_queue; 881 882 u8 needed_rx_chains; 883 enum ieee80211_smps_mode smps_mode; 884 885 int user_power_level; /* in dBm */ 886 int ap_power_level; /* in dBm */ 887 888 bool radar_required; 889 struct delayed_work dfs_cac_timer_work; 890 891 /* 892 * AP this belongs to: self in AP mode and 893 * corresponding AP in VLAN mode, NULL for 894 * all others (might be needed later in IBSS) 895 */ 896 struct ieee80211_if_ap *bss; 897 898 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 899 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 900 901 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 902 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 903 904 bool rc_has_vht_mcs_mask[IEEE80211_NUM_BANDS]; 905 u16 rc_rateidx_vht_mcs_mask[IEEE80211_NUM_BANDS][NL80211_VHT_NSS_MAX]; 906 907 union { 908 struct ieee80211_if_ap ap; 909 struct ieee80211_if_wds wds; 910 struct ieee80211_if_vlan vlan; 911 struct ieee80211_if_managed mgd; 912 struct ieee80211_if_ibss ibss; 913 struct ieee80211_if_mesh mesh; 914 struct ieee80211_if_ocb ocb; 915 u32 mntr_flags; 916 } u; 917 918 #ifdef CONFIG_MAC80211_DEBUGFS 919 struct { 920 struct dentry *subdir_stations; 921 struct dentry *default_unicast_key; 922 struct dentry *default_multicast_key; 923 struct dentry *default_mgmt_key; 924 } debugfs; 925 #endif 926 927 /* must be last, dynamically sized area in this! */ 928 struct ieee80211_vif vif; 929 }; 930 931 static inline 932 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 933 { 934 return container_of(p, struct ieee80211_sub_if_data, vif); 935 } 936 937 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 938 __acquires(&sdata->wdev.mtx) 939 { 940 mutex_lock(&sdata->wdev.mtx); 941 __acquire(&sdata->wdev.mtx); 942 } 943 944 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 945 __releases(&sdata->wdev.mtx) 946 { 947 mutex_unlock(&sdata->wdev.mtx); 948 __release(&sdata->wdev.mtx); 949 } 950 951 #define sdata_dereference(p, sdata) \ 952 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 953 954 static inline void 955 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 956 { 957 lockdep_assert_held(&sdata->wdev.mtx); 958 } 959 960 static inline enum ieee80211_band 961 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 962 { 963 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 964 struct ieee80211_chanctx_conf *chanctx_conf; 965 966 rcu_read_lock(); 967 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 968 if (!WARN_ON(!chanctx_conf)) 969 band = chanctx_conf->def.chan->band; 970 rcu_read_unlock(); 971 972 return band; 973 } 974 975 static inline int 976 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 977 { 978 switch (chandef->width) { 979 case NL80211_CHAN_WIDTH_5: 980 return 2; 981 case NL80211_CHAN_WIDTH_10: 982 return 1; 983 default: 984 return 0; 985 } 986 } 987 988 static inline int 989 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 990 { 991 struct ieee80211_chanctx_conf *chanctx_conf; 992 int shift = 0; 993 994 rcu_read_lock(); 995 chanctx_conf = rcu_dereference(vif->chanctx_conf); 996 if (chanctx_conf) 997 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 998 rcu_read_unlock(); 999 1000 return shift; 1001 } 1002 1003 struct ieee80211_rx_agg { 1004 u8 addr[ETH_ALEN]; 1005 u16 tid; 1006 }; 1007 1008 enum sdata_queue_type { 1009 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1010 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1011 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1012 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1013 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1014 }; 1015 1016 enum { 1017 IEEE80211_RX_MSG = 1, 1018 IEEE80211_TX_STATUS_MSG = 2, 1019 }; 1020 1021 enum queue_stop_reason { 1022 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1023 IEEE80211_QUEUE_STOP_REASON_PS, 1024 IEEE80211_QUEUE_STOP_REASON_CSA, 1025 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1026 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1027 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1028 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1029 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1030 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1031 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1032 1033 IEEE80211_QUEUE_STOP_REASONS, 1034 }; 1035 1036 #ifdef CONFIG_MAC80211_LEDS 1037 struct tpt_led_trigger { 1038 char name[32]; 1039 const struct ieee80211_tpt_blink *blink_table; 1040 unsigned int blink_table_len; 1041 struct timer_list timer; 1042 unsigned long prev_traffic; 1043 unsigned long tx_bytes, rx_bytes; 1044 unsigned int active, want; 1045 bool running; 1046 }; 1047 #endif 1048 1049 /** 1050 * mac80211 scan flags - currently active scan mode 1051 * 1052 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1053 * well be on the operating channel 1054 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1055 * determine if we are on the operating channel or not 1056 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1057 * channel. This should not interrupt normal traffic. 1058 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1059 * that the scan completed. 1060 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1061 * a scan complete for an aborted scan. 1062 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1063 * cancelled. 1064 */ 1065 enum { 1066 SCAN_SW_SCANNING, 1067 SCAN_HW_SCANNING, 1068 SCAN_ONCHANNEL_SCANNING, 1069 SCAN_COMPLETED, 1070 SCAN_ABORTED, 1071 SCAN_HW_CANCELLED, 1072 }; 1073 1074 /** 1075 * enum mac80211_scan_state - scan state machine states 1076 * 1077 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1078 * determines if we should keep on scanning or switch back to the 1079 * operating channel 1080 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1081 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1082 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1083 * send out data 1084 * @SCAN_RESUME: Resume the scan and scan the next channel 1085 * @SCAN_ABORT: Abort the scan and go back to operating channel 1086 */ 1087 enum mac80211_scan_state { 1088 SCAN_DECISION, 1089 SCAN_SET_CHANNEL, 1090 SCAN_SEND_PROBE, 1091 SCAN_SUSPEND, 1092 SCAN_RESUME, 1093 SCAN_ABORT, 1094 }; 1095 1096 struct ieee80211_local { 1097 /* embed the driver visible part. 1098 * don't cast (use the static inlines below), but we keep 1099 * it first anyway so they become a no-op */ 1100 struct ieee80211_hw hw; 1101 1102 const struct ieee80211_ops *ops; 1103 1104 /* 1105 * private workqueue to mac80211. mac80211 makes this accessible 1106 * via ieee80211_queue_work() 1107 */ 1108 struct workqueue_struct *workqueue; 1109 1110 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1111 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1112 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1113 spinlock_t queue_stop_reason_lock; 1114 1115 int open_count; 1116 int monitors, cooked_mntrs; 1117 /* number of interfaces with corresponding FIF_ flags */ 1118 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1119 fif_probe_req; 1120 int probe_req_reg; 1121 unsigned int filter_flags; /* FIF_* */ 1122 1123 bool wiphy_ciphers_allocated; 1124 1125 bool use_chanctx; 1126 1127 /* protects the aggregated multicast list and filter calls */ 1128 spinlock_t filter_lock; 1129 1130 /* used for uploading changed mc list */ 1131 struct work_struct reconfig_filter; 1132 1133 /* aggregated multicast list */ 1134 struct netdev_hw_addr_list mc_list; 1135 1136 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1137 1138 /* 1139 * suspended is true if we finished all the suspend _and_ we have 1140 * not yet come up from resume. This is to be used by mac80211 1141 * to ensure driver sanity during suspend and mac80211's own 1142 * sanity. It can eventually be used for WoW as well. 1143 */ 1144 bool suspended; 1145 1146 /* 1147 * Resuming is true while suspended, but when we're reprogramming the 1148 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1149 * again even though some other parts of the stack are still suspended 1150 * and we still drop received frames to avoid waking the stack. 1151 */ 1152 bool resuming; 1153 1154 /* 1155 * quiescing is true during the suspend process _only_ to 1156 * ease timer cancelling etc. 1157 */ 1158 bool quiescing; 1159 1160 /* device is started */ 1161 bool started; 1162 1163 /* device is during a HW reconfig */ 1164 bool in_reconfig; 1165 1166 /* wowlan is enabled -- don't reconfig on resume */ 1167 bool wowlan; 1168 1169 struct work_struct radar_detected_work; 1170 1171 /* number of RX chains the hardware has */ 1172 u8 rx_chains; 1173 1174 int tx_headroom; /* required headroom for hardware/radiotap */ 1175 1176 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1177 * added to skb_queue will be processed, but frames in 1178 * skb_queue_unreliable may be dropped if the total length of these 1179 * queues increases over the limit. */ 1180 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1181 struct tasklet_struct tasklet; 1182 struct sk_buff_head skb_queue; 1183 struct sk_buff_head skb_queue_unreliable; 1184 1185 spinlock_t rx_path_lock; 1186 1187 /* Station data */ 1188 /* 1189 * The mutex only protects the list, hash table and 1190 * counter, reads are done with RCU. 1191 */ 1192 struct mutex sta_mtx; 1193 spinlock_t tim_lock; 1194 unsigned long num_sta; 1195 struct list_head sta_list; 1196 struct rhashtable sta_hash; 1197 struct timer_list sta_cleanup; 1198 int sta_generation; 1199 1200 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1201 struct tasklet_struct tx_pending_tasklet; 1202 1203 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1204 1205 /* number of interfaces with allmulti RX */ 1206 atomic_t iff_allmultis; 1207 1208 struct rate_control_ref *rate_ctrl; 1209 1210 struct crypto_cipher *wep_tx_tfm; 1211 struct crypto_cipher *wep_rx_tfm; 1212 u32 wep_iv; 1213 1214 /* see iface.c */ 1215 struct list_head interfaces; 1216 struct mutex iflist_mtx; 1217 1218 /* 1219 * Key mutex, protects sdata's key_list and sta_info's 1220 * key pointers (write access, they're RCU.) 1221 */ 1222 struct mutex key_mtx; 1223 1224 /* mutex for scan and work locking */ 1225 struct mutex mtx; 1226 1227 /* Scanning and BSS list */ 1228 unsigned long scanning; 1229 struct cfg80211_ssid scan_ssid; 1230 struct cfg80211_scan_request *int_scan_req; 1231 struct cfg80211_scan_request __rcu *scan_req; 1232 struct ieee80211_scan_request *hw_scan_req; 1233 struct cfg80211_chan_def scan_chandef; 1234 enum ieee80211_band hw_scan_band; 1235 int scan_channel_idx; 1236 int scan_ies_len; 1237 int hw_scan_ies_bufsize; 1238 1239 struct work_struct sched_scan_stopped_work; 1240 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1241 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1242 u8 scan_addr[ETH_ALEN]; 1243 1244 unsigned long leave_oper_channel_time; 1245 enum mac80211_scan_state next_scan_state; 1246 struct delayed_work scan_work; 1247 struct ieee80211_sub_if_data __rcu *scan_sdata; 1248 /* For backward compatibility only -- do not use */ 1249 struct cfg80211_chan_def _oper_chandef; 1250 1251 /* Temporary remain-on-channel for off-channel operations */ 1252 struct ieee80211_channel *tmp_channel; 1253 1254 /* channel contexts */ 1255 struct list_head chanctx_list; 1256 struct mutex chanctx_mtx; 1257 1258 #ifdef CONFIG_MAC80211_LEDS 1259 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1260 struct led_trigger tpt_led; 1261 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1262 atomic_t radio_led_active, tpt_led_active; 1263 struct tpt_led_trigger *tpt_led_trigger; 1264 #endif 1265 1266 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1267 /* SNMP counters */ 1268 /* dot11CountersTable */ 1269 u32 dot11TransmittedFragmentCount; 1270 u32 dot11MulticastTransmittedFrameCount; 1271 u32 dot11FailedCount; 1272 u32 dot11RetryCount; 1273 u32 dot11MultipleRetryCount; 1274 u32 dot11FrameDuplicateCount; 1275 u32 dot11ReceivedFragmentCount; 1276 u32 dot11MulticastReceivedFrameCount; 1277 u32 dot11TransmittedFrameCount; 1278 1279 /* TX/RX handler statistics */ 1280 unsigned int tx_handlers_drop; 1281 unsigned int tx_handlers_queued; 1282 unsigned int tx_handlers_drop_wep; 1283 unsigned int tx_handlers_drop_not_assoc; 1284 unsigned int tx_handlers_drop_unauth_port; 1285 unsigned int rx_handlers_drop; 1286 unsigned int rx_handlers_queued; 1287 unsigned int rx_handlers_drop_nullfunc; 1288 unsigned int rx_handlers_drop_defrag; 1289 unsigned int tx_expand_skb_head; 1290 unsigned int tx_expand_skb_head_cloned; 1291 unsigned int rx_expand_skb_head_defrag; 1292 unsigned int rx_handlers_fragments; 1293 unsigned int tx_status_drop; 1294 #define I802_DEBUG_INC(c) (c)++ 1295 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1296 #define I802_DEBUG_INC(c) do { } while (0) 1297 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1298 1299 1300 int total_ps_buffered; /* total number of all buffered unicast and 1301 * multicast packets for power saving stations 1302 */ 1303 1304 bool pspolling; 1305 bool offchannel_ps_enabled; 1306 /* 1307 * PS can only be enabled when we have exactly one managed 1308 * interface (and monitors) in PS, this then points there. 1309 */ 1310 struct ieee80211_sub_if_data *ps_sdata; 1311 struct work_struct dynamic_ps_enable_work; 1312 struct work_struct dynamic_ps_disable_work; 1313 struct timer_list dynamic_ps_timer; 1314 struct notifier_block network_latency_notifier; 1315 struct notifier_block ifa_notifier; 1316 struct notifier_block ifa6_notifier; 1317 1318 /* 1319 * The dynamic ps timeout configured from user space via WEXT - 1320 * this will override whatever chosen by mac80211 internally. 1321 */ 1322 int dynamic_ps_forced_timeout; 1323 1324 int user_power_level; /* in dBm, for all interfaces */ 1325 1326 enum ieee80211_smps_mode smps_mode; 1327 1328 struct work_struct restart_work; 1329 1330 #ifdef CONFIG_MAC80211_DEBUGFS 1331 struct local_debugfsdentries { 1332 struct dentry *rcdir; 1333 struct dentry *keys; 1334 } debugfs; 1335 #endif 1336 1337 /* 1338 * Remain-on-channel support 1339 */ 1340 struct list_head roc_list; 1341 struct work_struct hw_roc_start, hw_roc_done; 1342 unsigned long hw_roc_start_time; 1343 u64 roc_cookie_counter; 1344 1345 struct idr ack_status_frames; 1346 spinlock_t ack_status_lock; 1347 1348 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1349 1350 /* virtual monitor interface */ 1351 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1352 struct cfg80211_chan_def monitor_chandef; 1353 1354 /* extended capabilities provided by mac80211 */ 1355 u8 ext_capa[8]; 1356 1357 /* TDLS channel switch */ 1358 struct work_struct tdls_chsw_work; 1359 struct sk_buff_head skb_queue_tdls_chsw; 1360 }; 1361 1362 static inline struct ieee80211_sub_if_data * 1363 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1364 { 1365 return netdev_priv(dev); 1366 } 1367 1368 static inline struct ieee80211_sub_if_data * 1369 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1370 { 1371 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1372 } 1373 1374 /* this struct represents 802.11n's RA/TID combination */ 1375 struct ieee80211_ra_tid { 1376 u8 ra[ETH_ALEN]; 1377 u16 tid; 1378 }; 1379 1380 /* this struct holds the value parsing from channel switch IE */ 1381 struct ieee80211_csa_ie { 1382 struct cfg80211_chan_def chandef; 1383 u8 mode; 1384 u8 count; 1385 u8 ttl; 1386 u16 pre_value; 1387 }; 1388 1389 /* Parsed Information Elements */ 1390 struct ieee802_11_elems { 1391 const u8 *ie_start; 1392 size_t total_len; 1393 1394 /* pointers to IEs */ 1395 const struct ieee80211_tdls_lnkie *lnk_id; 1396 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1397 const u8 *ext_capab; 1398 const u8 *ssid; 1399 const u8 *supp_rates; 1400 const u8 *ds_params; 1401 const struct ieee80211_tim_ie *tim; 1402 const u8 *challenge; 1403 const u8 *rsn; 1404 const u8 *erp_info; 1405 const u8 *ext_supp_rates; 1406 const u8 *wmm_info; 1407 const u8 *wmm_param; 1408 const struct ieee80211_ht_cap *ht_cap_elem; 1409 const struct ieee80211_ht_operation *ht_operation; 1410 const struct ieee80211_vht_cap *vht_cap_elem; 1411 const struct ieee80211_vht_operation *vht_operation; 1412 const struct ieee80211_meshconf_ie *mesh_config; 1413 const u8 *mesh_id; 1414 const u8 *peering; 1415 const __le16 *awake_window; 1416 const u8 *preq; 1417 const u8 *prep; 1418 const u8 *perr; 1419 const struct ieee80211_rann_ie *rann; 1420 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1421 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1422 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1423 const u8 *country_elem; 1424 const u8 *pwr_constr_elem; 1425 const u8 *cisco_dtpc_elem; 1426 const struct ieee80211_timeout_interval_ie *timeout_int; 1427 const u8 *opmode_notif; 1428 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1429 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1430 1431 /* length of them, respectively */ 1432 u8 ext_capab_len; 1433 u8 ssid_len; 1434 u8 supp_rates_len; 1435 u8 tim_len; 1436 u8 challenge_len; 1437 u8 rsn_len; 1438 u8 ext_supp_rates_len; 1439 u8 wmm_info_len; 1440 u8 wmm_param_len; 1441 u8 mesh_id_len; 1442 u8 peering_len; 1443 u8 preq_len; 1444 u8 prep_len; 1445 u8 perr_len; 1446 u8 country_elem_len; 1447 1448 /* whether a parse error occurred while retrieving these elements */ 1449 bool parse_error; 1450 }; 1451 1452 static inline struct ieee80211_local *hw_to_local( 1453 struct ieee80211_hw *hw) 1454 { 1455 return container_of(hw, struct ieee80211_local, hw); 1456 } 1457 1458 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1459 { 1460 return container_of(txq, struct txq_info, txq); 1461 } 1462 1463 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1464 { 1465 return ether_addr_equal(raddr, addr) || 1466 is_broadcast_ether_addr(raddr); 1467 } 1468 1469 static inline bool 1470 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1471 { 1472 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1473 status->flag & RX_FLAG_MACTIME_END); 1474 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1475 } 1476 1477 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1478 struct ieee80211_rx_status *status, 1479 unsigned int mpdu_len, 1480 unsigned int mpdu_offset); 1481 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1482 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1483 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1484 u32 changed); 1485 void ieee80211_configure_filter(struct ieee80211_local *local); 1486 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1487 1488 /* STA code */ 1489 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1490 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1491 struct cfg80211_auth_request *req); 1492 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1493 struct cfg80211_assoc_request *req); 1494 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1495 struct cfg80211_deauth_request *req); 1496 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1497 struct cfg80211_disassoc_request *req); 1498 void ieee80211_send_pspoll(struct ieee80211_local *local, 1499 struct ieee80211_sub_if_data *sdata); 1500 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1501 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1502 int ieee80211_max_network_latency(struct notifier_block *nb, 1503 unsigned long data, void *dummy); 1504 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1505 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1506 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1507 struct sk_buff *skb); 1508 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1509 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1510 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1511 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1512 __le16 fc, bool acked); 1513 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1514 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1515 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1516 1517 /* IBSS code */ 1518 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1519 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1520 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1521 const u8 *bssid, const u8 *addr, u32 supp_rates); 1522 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1523 struct cfg80211_ibss_params *params); 1524 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1525 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1526 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1527 struct sk_buff *skb); 1528 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1529 struct cfg80211_csa_settings *csa_settings); 1530 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1531 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1532 1533 /* OCB code */ 1534 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1535 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1536 const u8 *bssid, const u8 *addr, u32 supp_rates); 1537 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1538 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1539 struct ocb_setup *setup); 1540 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1541 1542 /* mesh code */ 1543 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1544 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1545 struct sk_buff *skb); 1546 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1547 struct cfg80211_csa_settings *csa_settings); 1548 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1549 1550 /* scan/BSS handling */ 1551 void ieee80211_scan_work(struct work_struct *work); 1552 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1553 const u8 *ssid, u8 ssid_len, 1554 struct ieee80211_channel **channels, 1555 unsigned int n_channels, 1556 enum nl80211_bss_scan_width scan_width); 1557 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1558 struct cfg80211_scan_request *req); 1559 void ieee80211_scan_cancel(struct ieee80211_local *local); 1560 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1561 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1562 1563 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1564 struct ieee80211_bss * 1565 ieee80211_bss_info_update(struct ieee80211_local *local, 1566 struct ieee80211_rx_status *rx_status, 1567 struct ieee80211_mgmt *mgmt, 1568 size_t len, 1569 struct ieee802_11_elems *elems, 1570 struct ieee80211_channel *channel); 1571 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1572 struct ieee80211_bss *bss); 1573 1574 /* scheduled scan handling */ 1575 int 1576 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1577 struct cfg80211_sched_scan_request *req); 1578 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1579 struct cfg80211_sched_scan_request *req); 1580 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1581 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1582 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1583 1584 /* off-channel helpers */ 1585 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1586 void ieee80211_offchannel_return(struct ieee80211_local *local); 1587 void ieee80211_roc_setup(struct ieee80211_local *local); 1588 void ieee80211_start_next_roc(struct ieee80211_local *local); 1589 void ieee80211_roc_purge(struct ieee80211_local *local, 1590 struct ieee80211_sub_if_data *sdata); 1591 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1592 void ieee80211_sw_roc_work(struct work_struct *work); 1593 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1594 1595 /* channel switch handling */ 1596 void ieee80211_csa_finalize_work(struct work_struct *work); 1597 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1598 struct cfg80211_csa_settings *params); 1599 1600 /* interface handling */ 1601 int ieee80211_iface_init(void); 1602 void ieee80211_iface_exit(void); 1603 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1604 unsigned char name_assign_type, 1605 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1606 struct vif_params *params); 1607 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1608 enum nl80211_iftype type); 1609 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1610 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1611 u32 ieee80211_idle_off(struct ieee80211_local *local); 1612 void ieee80211_recalc_idle(struct ieee80211_local *local); 1613 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1614 const int offset); 1615 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1616 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1617 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1618 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1619 1620 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1621 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1622 bool update_bss); 1623 1624 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1625 { 1626 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1627 } 1628 1629 /* tx handling */ 1630 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1631 void ieee80211_tx_pending(unsigned long data); 1632 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1633 struct net_device *dev); 1634 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1635 struct net_device *dev); 1636 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1637 struct net_device *dev, 1638 u32 info_flags); 1639 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1640 struct sk_buff_head *skbs); 1641 struct sk_buff * 1642 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1643 struct sk_buff *skb, u32 info_flags); 1644 1645 void ieee80211_check_fast_xmit(struct sta_info *sta); 1646 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1647 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1648 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1649 1650 /* HT */ 1651 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1652 struct ieee80211_sta_ht_cap *ht_cap); 1653 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1654 struct ieee80211_supported_band *sband, 1655 const struct ieee80211_ht_cap *ht_cap_ie, 1656 struct sta_info *sta); 1657 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1658 const u8 *da, u16 tid, 1659 u16 initiator, u16 reason_code); 1660 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1661 enum ieee80211_smps_mode smps, const u8 *da, 1662 const u8 *bssid); 1663 void ieee80211_request_smps_ap_work(struct work_struct *work); 1664 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1665 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1666 enum ieee80211_smps_mode smps_mode_new); 1667 1668 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1669 u16 initiator, u16 reason, bool stop); 1670 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1671 u16 initiator, u16 reason, bool stop); 1672 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1673 u8 dialog_token, u16 timeout, 1674 u16 start_seq_num, u16 ba_policy, u16 tid, 1675 u16 buf_size, bool tx, bool auto_seq); 1676 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1677 enum ieee80211_agg_stop_reason reason); 1678 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1679 struct sta_info *sta, 1680 struct ieee80211_mgmt *mgmt, size_t len); 1681 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1682 struct sta_info *sta, 1683 struct ieee80211_mgmt *mgmt, 1684 size_t len); 1685 void ieee80211_process_addba_request(struct ieee80211_local *local, 1686 struct sta_info *sta, 1687 struct ieee80211_mgmt *mgmt, 1688 size_t len); 1689 1690 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1691 enum ieee80211_agg_stop_reason reason); 1692 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1693 enum ieee80211_agg_stop_reason reason); 1694 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1695 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1696 void ieee80211_ba_session_work(struct work_struct *work); 1697 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1698 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1699 1700 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1701 1702 /* VHT */ 1703 void 1704 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1705 struct ieee80211_supported_band *sband, 1706 const struct ieee80211_vht_cap *vht_cap_ie, 1707 struct sta_info *sta); 1708 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1709 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1710 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1711 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1712 struct sta_info *sta, u8 opmode, 1713 enum ieee80211_band band, bool nss_only); 1714 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1715 struct sta_info *sta, u8 opmode, 1716 enum ieee80211_band band, bool nss_only); 1717 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1718 struct ieee80211_sta_vht_cap *vht_cap); 1719 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1720 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1721 1722 /* Spectrum management */ 1723 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1724 struct ieee80211_mgmt *mgmt, 1725 size_t len); 1726 /** 1727 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1728 * @sdata: the sdata of the interface which has received the frame 1729 * @elems: parsed 802.11 elements received with the frame 1730 * @current_band: indicates the current band 1731 * @sta_flags: contains information about own capabilities and restrictions 1732 * to decide which channel switch announcements can be accepted. Only the 1733 * following subset of &enum ieee80211_sta_flags are evaluated: 1734 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1735 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1736 * %IEEE80211_STA_DISABLE_160MHZ. 1737 * @bssid: the currently connected bssid (for reporting) 1738 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1739 All of them will be filled with if success only. 1740 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1741 */ 1742 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1743 struct ieee802_11_elems *elems, 1744 enum ieee80211_band current_band, 1745 u32 sta_flags, u8 *bssid, 1746 struct ieee80211_csa_ie *csa_ie); 1747 1748 /* Suspend/resume and hw reconfiguration */ 1749 int ieee80211_reconfig(struct ieee80211_local *local); 1750 void ieee80211_stop_device(struct ieee80211_local *local); 1751 1752 int __ieee80211_suspend(struct ieee80211_hw *hw, 1753 struct cfg80211_wowlan *wowlan); 1754 1755 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1756 { 1757 struct ieee80211_local *local = hw_to_local(hw); 1758 1759 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1760 !test_bit(SCAN_COMPLETED, &local->scanning), 1761 "%s: resume with hardware scan still in progress\n", 1762 wiphy_name(hw->wiphy)); 1763 1764 return ieee80211_reconfig(hw_to_local(hw)); 1765 } 1766 1767 /* utility functions/constants */ 1768 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1769 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1770 int rate, int erp, int short_preamble, 1771 int shift); 1772 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1773 struct ieee80211_hdr *hdr, const u8 *tsc, 1774 gfp_t gfp); 1775 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1776 bool bss_notify); 1777 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1778 struct sta_info *sta, struct sk_buff *skb); 1779 1780 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1781 struct sk_buff *skb, int tid, 1782 enum ieee80211_band band); 1783 1784 static inline void 1785 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1786 struct sk_buff *skb, int tid, 1787 enum ieee80211_band band) 1788 { 1789 rcu_read_lock(); 1790 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1791 rcu_read_unlock(); 1792 } 1793 1794 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1795 struct sk_buff *skb, int tid) 1796 { 1797 struct ieee80211_chanctx_conf *chanctx_conf; 1798 1799 rcu_read_lock(); 1800 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1801 if (WARN_ON(!chanctx_conf)) { 1802 rcu_read_unlock(); 1803 kfree_skb(skb); 1804 return; 1805 } 1806 1807 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1808 chanctx_conf->def.chan->band); 1809 rcu_read_unlock(); 1810 } 1811 1812 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1813 struct sk_buff *skb) 1814 { 1815 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1816 ieee80211_tx_skb_tid(sdata, skb, 7); 1817 } 1818 1819 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1820 struct ieee802_11_elems *elems, 1821 u64 filter, u32 crc); 1822 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1823 bool action, 1824 struct ieee802_11_elems *elems) 1825 { 1826 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1827 } 1828 1829 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1830 { 1831 struct sk_buff *tail = skb_peek_tail(frames); 1832 struct ieee80211_rx_status *status; 1833 1834 if (!tail) 1835 return false; 1836 1837 status = IEEE80211_SKB_RXCB(tail); 1838 if (status->flag & RX_FLAG_AMSDU_MORE) 1839 return false; 1840 1841 return true; 1842 } 1843 1844 extern const int ieee802_1d_to_ac[8]; 1845 1846 static inline int ieee80211_ac_from_tid(int tid) 1847 { 1848 return ieee802_1d_to_ac[tid & 7]; 1849 } 1850 1851 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1852 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1853 void ieee80211_dynamic_ps_timer(unsigned long data); 1854 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1855 struct ieee80211_sub_if_data *sdata, 1856 int powersave); 1857 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1858 struct ieee80211_hdr *hdr); 1859 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1860 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1861 1862 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1863 unsigned long queues, 1864 enum queue_stop_reason reason, 1865 bool refcounted); 1866 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1867 struct ieee80211_sub_if_data *sdata, 1868 enum queue_stop_reason reason); 1869 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1870 struct ieee80211_sub_if_data *sdata, 1871 enum queue_stop_reason reason); 1872 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1873 unsigned long queues, 1874 enum queue_stop_reason reason, 1875 bool refcounted); 1876 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1877 enum queue_stop_reason reason, 1878 bool refcounted); 1879 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1880 enum queue_stop_reason reason, 1881 bool refcounted); 1882 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1883 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1884 struct sk_buff *skb); 1885 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1886 struct sk_buff_head *skbs); 1887 void ieee80211_flush_queues(struct ieee80211_local *local, 1888 struct ieee80211_sub_if_data *sdata, bool drop); 1889 void __ieee80211_flush_queues(struct ieee80211_local *local, 1890 struct ieee80211_sub_if_data *sdata, 1891 unsigned int queues, bool drop); 1892 1893 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1894 { 1895 /* 1896 * If quiescing is set, we are racing with __ieee80211_suspend. 1897 * __ieee80211_suspend flushes the workers after setting quiescing, 1898 * and we check quiescing / suspended before enqueing new workers. 1899 * We should abort the worker to avoid the races below. 1900 */ 1901 if (local->quiescing) 1902 return false; 1903 1904 /* 1905 * We might already be suspended if the following scenario occurs: 1906 * __ieee80211_suspend Control path 1907 * 1908 * if (local->quiescing) 1909 * return; 1910 * local->quiescing = true; 1911 * flush_workqueue(); 1912 * queue_work(...); 1913 * local->suspended = true; 1914 * local->quiescing = false; 1915 * worker starts running... 1916 */ 1917 if (local->suspended) 1918 return false; 1919 1920 return true; 1921 } 1922 1923 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1924 struct sta_info *sta, 1925 struct txq_info *txq, int tid); 1926 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1927 u16 transaction, u16 auth_alg, u16 status, 1928 const u8 *extra, size_t extra_len, const u8 *bssid, 1929 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1930 u32 tx_flags); 1931 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1932 const u8 *bssid, u16 stype, u16 reason, 1933 bool send_frame, u8 *frame_buf); 1934 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1935 size_t buffer_len, 1936 struct ieee80211_scan_ies *ie_desc, 1937 const u8 *ie, size_t ie_len, 1938 u8 bands_used, u32 *rate_masks, 1939 struct cfg80211_chan_def *chandef); 1940 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1941 const u8 *src, const u8 *dst, 1942 u32 ratemask, 1943 struct ieee80211_channel *chan, 1944 const u8 *ssid, size_t ssid_len, 1945 const u8 *ie, size_t ie_len, 1946 bool directed); 1947 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1948 const u8 *src, const u8 *dst, 1949 const u8 *ssid, size_t ssid_len, 1950 const u8 *ie, size_t ie_len, 1951 u32 ratemask, bool directed, u32 tx_flags, 1952 struct ieee80211_channel *channel, bool scan); 1953 1954 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1955 struct ieee802_11_elems *elems, 1956 enum ieee80211_band band, u32 *basic_rates); 1957 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1958 enum ieee80211_smps_mode smps_mode); 1959 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1960 enum ieee80211_smps_mode smps_mode); 1961 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1962 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1963 1964 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1965 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1966 u16 cap); 1967 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1968 const struct cfg80211_chan_def *chandef, 1969 u16 prot_mode); 1970 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1971 u32 cap); 1972 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1973 const struct cfg80211_chan_def *chandef); 1974 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1975 const struct ieee80211_supported_band *sband, 1976 const u8 *srates, int srates_len, u32 *rates); 1977 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1978 struct sk_buff *skb, bool need_basic, 1979 enum ieee80211_band band); 1980 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1981 struct sk_buff *skb, bool need_basic, 1982 enum ieee80211_band band); 1983 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1984 1985 /* channel management */ 1986 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1987 const struct ieee80211_ht_operation *ht_oper, 1988 struct cfg80211_chan_def *chandef); 1989 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1990 const struct ieee80211_vht_operation *oper, 1991 struct cfg80211_chan_def *chandef); 1992 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1993 1994 int __must_check 1995 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1996 const struct cfg80211_chan_def *chandef, 1997 enum ieee80211_chanctx_mode mode); 1998 int __must_check 1999 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2000 const struct cfg80211_chan_def *chandef, 2001 enum ieee80211_chanctx_mode mode, 2002 bool radar_required); 2003 int __must_check 2004 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2005 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2006 2007 int __must_check 2008 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2009 const struct cfg80211_chan_def *chandef, 2010 u32 *changed); 2011 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2012 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2013 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2014 bool clear); 2015 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2016 struct ieee80211_chanctx *ctx); 2017 2018 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2019 struct ieee80211_chanctx *chanctx); 2020 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2021 struct ieee80211_chanctx *ctx); 2022 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2023 2024 void ieee80211_dfs_cac_timer(unsigned long data); 2025 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2026 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2027 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2028 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2029 struct cfg80211_csa_settings *csa_settings); 2030 2031 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2032 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2033 const struct ieee80211_cipher_scheme * 2034 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2035 enum nl80211_iftype iftype); 2036 int ieee80211_cs_headroom(struct ieee80211_local *local, 2037 struct cfg80211_crypto_settings *crypto, 2038 enum nl80211_iftype iftype); 2039 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2040 struct ieee80211_sub_if_data *sdata); 2041 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2042 const struct cfg80211_chan_def *chandef, 2043 enum ieee80211_chanctx_mode chanmode, 2044 u8 radar_detect); 2045 int ieee80211_max_num_channels(struct ieee80211_local *local); 2046 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2047 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2048 struct ieee80211_chanctx *ctx); 2049 2050 /* TDLS */ 2051 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2052 const u8 *peer, u8 action_code, u8 dialog_token, 2053 u16 status_code, u32 peer_capability, 2054 bool initiator, const u8 *extra_ies, 2055 size_t extra_ies_len); 2056 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2057 const u8 *peer, enum nl80211_tdls_operation oper); 2058 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2059 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2060 const u8 *addr, u8 oper_class, 2061 struct cfg80211_chan_def *chandef); 2062 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2063 struct net_device *dev, 2064 const u8 *addr); 2065 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2066 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2067 2068 extern const struct ethtool_ops ieee80211_ethtool_ops; 2069 2070 #ifdef CONFIG_MAC80211_NOINLINE 2071 #define debug_noinline noinline 2072 #else 2073 #define debug_noinline 2074 #endif 2075 2076 #endif /* IEEE80211_I_H */ 2077