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 <net/ieee80211_radiotap.h> 30 #include <net/cfg80211.h> 31 #include <net/mac80211.h> 32 #include "key.h" 33 #include "sta_info.h" 34 #include "debug.h" 35 36 struct ieee80211_local; 37 38 /* Maximum number of broadcast/multicast frames to buffer when some of the 39 * associated stations are using power saving. */ 40 #define AP_MAX_BC_BUFFER 128 41 42 /* Maximum number of frames buffered to all STAs, including multicast frames. 43 * Note: increasing this limit increases the potential memory requirement. Each 44 * frame can be up to about 2 kB long. */ 45 #define TOTAL_MAX_TX_BUFFER 512 46 47 /* Required encryption head and tailroom */ 48 #define IEEE80211_ENCRYPT_HEADROOM 8 49 #define IEEE80211_ENCRYPT_TAILROOM 18 50 51 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 52 * reception of at least three fragmented frames. This limit can be increased 53 * by changing this define, at the cost of slower frame reassembly and 54 * increased memory use (about 2 kB of RAM per entry). */ 55 #define IEEE80211_FRAGMENT_MAX 4 56 57 /* power level hasn't been configured (or set to automatic) */ 58 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 59 60 /* 61 * Some APs experience problems when working with U-APSD. Decreasing the 62 * probability of that happening by using legacy mode for all ACs but VO isn't 63 * enough. 64 * 65 * Cisco 4410N originally forced us to enable VO by default only because it 66 * treated non-VO ACs as legacy. 67 * 68 * However some APs (notably Netgear R7000) silently reclassify packets to 69 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 70 * clients would never see some frames (e.g. ARP responses) or would fetch them 71 * accidentally after a long time. 72 * 73 * It makes little sense to enable u-APSD queues by default because it needs 74 * userspace applications to be aware of it to actually take advantage of the 75 * possible additional powersavings. Implicitly depending on driver autotrigger 76 * frame support doesn't make much sense. 77 */ 78 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 79 80 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 81 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 82 83 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 84 85 struct ieee80211_fragment_entry { 86 unsigned long first_frag_time; 87 unsigned int seq; 88 unsigned int rx_queue; 89 unsigned int last_frag; 90 unsigned int extra_len; 91 struct sk_buff_head skb_list; 92 int ccmp; /* Whether fragments were encrypted with CCMP */ 93 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 94 }; 95 96 97 struct ieee80211_bss { 98 u32 device_ts_beacon, device_ts_presp; 99 100 bool wmm_used; 101 bool uapsd_supported; 102 103 #define IEEE80211_MAX_SUPP_RATES 32 104 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 105 size_t supp_rates_len; 106 struct ieee80211_rate *beacon_rate; 107 108 /* 109 * During association, we save an ERP value from a probe response so 110 * that we can feed ERP info to the driver when handling the 111 * association completes. these fields probably won't be up-to-date 112 * otherwise, you probably don't want to use them. 113 */ 114 bool has_erp_value; 115 u8 erp_value; 116 117 /* Keep track of the corruption of the last beacon/probe response. */ 118 u8 corrupt_data; 119 120 /* Keep track of what bits of information we have valid info for. */ 121 u8 valid_data; 122 }; 123 124 /** 125 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 126 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 127 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 128 * 129 * These are bss flags that are attached to a bss in the 130 * @corrupt_data field of &struct ieee80211_bss. 131 */ 132 enum ieee80211_bss_corrupt_data_flags { 133 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 134 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 135 }; 136 137 /** 138 * enum ieee80211_valid_data_flags - BSS valid data flags 139 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 140 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 142 * 143 * These are bss flags that are attached to a bss in the 144 * @valid_data field of &struct ieee80211_bss. They show which parts 145 * of the data structure were received as a result of an un-corrupted 146 * beacon/probe response. 147 */ 148 enum ieee80211_bss_valid_data_flags { 149 IEEE80211_BSS_VALID_WMM = BIT(1), 150 IEEE80211_BSS_VALID_RATES = BIT(2), 151 IEEE80211_BSS_VALID_ERP = BIT(3) 152 }; 153 154 typedef unsigned __bitwise__ ieee80211_tx_result; 155 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 156 #define TX_DROP ((__force ieee80211_tx_result) 1u) 157 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 158 159 #define IEEE80211_TX_UNICAST BIT(1) 160 #define IEEE80211_TX_PS_BUFFERED BIT(2) 161 162 struct ieee80211_tx_data { 163 struct sk_buff *skb; 164 struct sk_buff_head skbs; 165 struct ieee80211_local *local; 166 struct ieee80211_sub_if_data *sdata; 167 struct sta_info *sta; 168 struct ieee80211_key *key; 169 struct ieee80211_tx_rate rate; 170 171 unsigned int flags; 172 }; 173 174 175 typedef unsigned __bitwise__ ieee80211_rx_result; 176 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 177 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 178 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 179 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 180 181 /** 182 * enum ieee80211_packet_rx_flags - packet RX flags 183 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 184 * (incl. multicast frames) 185 * @IEEE80211_RX_FRAGMENTED: fragmented frame 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_RA_MATCH = BIT(1), 195 IEEE80211_RX_FRAGMENTED = BIT(2), 196 IEEE80211_RX_AMSDU = BIT(3), 197 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 198 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 199 }; 200 201 /** 202 * enum ieee80211_rx_flags - RX data flags 203 * 204 * @IEEE80211_RX_CMNTR: received on cooked monitor already 205 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 206 * to cfg80211_report_obss_beacon(). 207 * 208 * These flags are used across handling multiple interfaces 209 * for a single frame. 210 */ 211 enum ieee80211_rx_flags { 212 IEEE80211_RX_CMNTR = BIT(0), 213 IEEE80211_RX_BEACON_REPORTED = BIT(1), 214 }; 215 216 struct ieee80211_rx_data { 217 struct sk_buff *skb; 218 struct ieee80211_local *local; 219 struct ieee80211_sub_if_data *sdata; 220 struct sta_info *sta; 221 struct ieee80211_key *key; 222 223 unsigned int flags; 224 225 /* 226 * Index into sequence numbers array, 0..16 227 * since the last (16) is used for non-QoS, 228 * will be 16 on non-QoS frames. 229 */ 230 int seqno_idx; 231 232 /* 233 * Index into the security IV/PN arrays, 0..16 234 * since the last (16) is used for CCMP-encrypted 235 * management frames, will be set to 16 on mgmt 236 * frames and 0 on non-QoS frames. 237 */ 238 int security_idx; 239 240 u32 tkip_iv32; 241 u16 tkip_iv16; 242 }; 243 244 struct ieee80211_csa_settings { 245 const u16 *counter_offsets_beacon; 246 const u16 *counter_offsets_presp; 247 248 int n_counter_offsets_beacon; 249 int n_counter_offsets_presp; 250 251 u8 count; 252 }; 253 254 struct beacon_data { 255 u8 *head, *tail; 256 int head_len, tail_len; 257 struct ieee80211_meshconf_ie *meshconf; 258 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 259 u8 csa_current_counter; 260 struct rcu_head rcu_head; 261 }; 262 263 struct probe_resp { 264 struct rcu_head rcu_head; 265 int len; 266 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 267 u8 data[0]; 268 }; 269 270 struct ps_data { 271 /* yes, this looks ugly, but guarantees that we can later use 272 * bitmap_empty :) 273 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 274 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 275 __aligned(__alignof__(unsigned long)); 276 struct sk_buff_head bc_buf; 277 atomic_t num_sta_ps; /* number of stations in PS mode */ 278 int dtim_count; 279 bool dtim_bc_mc; 280 }; 281 282 struct ieee80211_if_ap { 283 struct beacon_data __rcu *beacon; 284 struct probe_resp __rcu *probe_resp; 285 286 /* to be used after channel switch. */ 287 struct cfg80211_beacon_data *next_beacon; 288 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 289 290 struct ps_data ps; 291 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 292 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 293 driver_smps_mode; /* smps mode request */ 294 295 struct work_struct request_smps_work; 296 }; 297 298 struct ieee80211_if_wds { 299 struct sta_info *sta; 300 u8 remote_addr[ETH_ALEN]; 301 }; 302 303 struct ieee80211_if_vlan { 304 struct list_head list; /* write-protected with RTNL and local->mtx */ 305 306 /* used for all tx if the VLAN is configured to 4-addr mode */ 307 struct sta_info __rcu *sta; 308 }; 309 310 struct mesh_stats { 311 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 312 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 313 __u32 fwded_frames; /* Mesh total forwarded frames */ 314 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 315 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 316 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 317 }; 318 319 #define PREQ_Q_F_START 0x1 320 #define PREQ_Q_F_REFRESH 0x2 321 struct mesh_preq_queue { 322 struct list_head list; 323 u8 dst[ETH_ALEN]; 324 u8 flags; 325 }; 326 327 #if HZ/100 == 0 328 #define IEEE80211_ROC_MIN_LEFT 1 329 #else 330 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 331 #endif 332 333 struct ieee80211_roc_work { 334 struct list_head list; 335 struct list_head dependents; 336 337 struct delayed_work work; 338 339 struct ieee80211_sub_if_data *sdata; 340 341 struct ieee80211_channel *chan; 342 343 bool started, abort, hw_begun, notified; 344 bool to_be_freed; 345 bool on_channel; 346 347 unsigned long hw_start_time; 348 349 u32 duration, req_duration; 350 struct sk_buff *frame; 351 u64 cookie, mgmt_tx_cookie; 352 enum ieee80211_roc_type type; 353 }; 354 355 /* flags used in struct ieee80211_if_managed.flags */ 356 enum ieee80211_sta_flags { 357 IEEE80211_STA_CONNECTION_POLL = BIT(1), 358 IEEE80211_STA_CONTROL_PORT = BIT(2), 359 IEEE80211_STA_DISABLE_HT = BIT(4), 360 IEEE80211_STA_MFP_ENABLED = BIT(6), 361 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 362 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 363 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 364 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 365 IEEE80211_STA_DISABLE_VHT = BIT(11), 366 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 367 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 368 IEEE80211_STA_DISABLE_WMM = BIT(14), 369 IEEE80211_STA_ENABLE_RRM = BIT(15), 370 }; 371 372 struct ieee80211_mgd_auth_data { 373 struct cfg80211_bss *bss; 374 unsigned long timeout; 375 int tries; 376 u16 algorithm, expected_transaction; 377 378 u8 key[WLAN_KEY_LEN_WEP104]; 379 u8 key_len, key_idx; 380 bool done; 381 bool timeout_started; 382 383 u16 sae_trans, sae_status; 384 size_t data_len; 385 u8 data[]; 386 }; 387 388 struct ieee80211_mgd_assoc_data { 389 struct cfg80211_bss *bss; 390 const u8 *supp_rates; 391 392 unsigned long timeout; 393 int tries; 394 395 u16 capability; 396 u8 prev_bssid[ETH_ALEN]; 397 u8 ssid[IEEE80211_MAX_SSID_LEN]; 398 u8 ssid_len; 399 u8 supp_rates_len; 400 bool wmm, uapsd; 401 bool need_beacon; 402 bool synced; 403 bool timeout_started; 404 405 u8 ap_ht_param; 406 407 struct ieee80211_vht_cap ap_vht_cap; 408 409 size_t ie_len; 410 u8 ie[]; 411 }; 412 413 struct ieee80211_sta_tx_tspec { 414 /* timestamp of the first packet in the time slice */ 415 unsigned long time_slice_start; 416 417 u32 admitted_time; /* in usecs, unlike over the air */ 418 u8 tsid; 419 s8 up; /* signed to be able to invalidate with -1 during teardown */ 420 421 /* consumed TX time in microseconds in the time slice */ 422 u32 consumed_tx_time; 423 enum { 424 TX_TSPEC_ACTION_NONE = 0, 425 TX_TSPEC_ACTION_DOWNGRADE, 426 TX_TSPEC_ACTION_STOP_DOWNGRADE, 427 } action; 428 bool downgraded; 429 }; 430 431 struct ieee80211_if_managed { 432 struct timer_list timer; 433 struct timer_list conn_mon_timer; 434 struct timer_list bcn_mon_timer; 435 struct timer_list chswitch_timer; 436 struct work_struct monitor_work; 437 struct work_struct chswitch_work; 438 struct work_struct beacon_connection_loss_work; 439 struct work_struct csa_connection_drop_work; 440 441 unsigned long beacon_timeout; 442 unsigned long probe_timeout; 443 int probe_send_count; 444 bool nullfunc_failed; 445 bool connection_loss; 446 447 struct cfg80211_bss *associated; 448 struct ieee80211_mgd_auth_data *auth_data; 449 struct ieee80211_mgd_assoc_data *assoc_data; 450 451 u8 bssid[ETH_ALEN]; 452 453 u16 aid; 454 455 bool powersave; /* powersave requested for this iface */ 456 bool broken_ap; /* AP is broken -- turn off powersave */ 457 bool have_beacon; 458 u8 dtim_period; 459 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 460 driver_smps_mode; /* smps mode request */ 461 462 struct work_struct request_smps_work; 463 464 unsigned int flags; 465 466 bool csa_waiting_bcn; 467 bool csa_ignored_same_chan; 468 469 bool beacon_crc_valid; 470 u32 beacon_crc; 471 472 bool status_acked; 473 bool status_received; 474 __le16 status_fc; 475 476 enum { 477 IEEE80211_MFP_DISABLED, 478 IEEE80211_MFP_OPTIONAL, 479 IEEE80211_MFP_REQUIRED 480 } mfp; /* management frame protection */ 481 482 /* 483 * Bitmask of enabled u-apsd queues, 484 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 485 * to take effect. 486 */ 487 unsigned int uapsd_queues; 488 489 /* 490 * Maximum number of buffered frames AP can deliver during a 491 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 492 * Needs a new association to take effect. 493 */ 494 unsigned int uapsd_max_sp_len; 495 496 int wmm_last_param_set; 497 498 u8 use_4addr; 499 500 s16 p2p_noa_index; 501 502 /* Signal strength from the last Beacon frame in the current BSS. */ 503 int last_beacon_signal; 504 505 /* 506 * Weighted average of the signal strength from Beacon frames in the 507 * current BSS. This is in units of 1/16 of the signal unit to maintain 508 * accuracy and to speed up calculations, i.e., the value need to be 509 * divided by 16 to get the actual value. 510 */ 511 int ave_beacon_signal; 512 513 /* 514 * Number of Beacon frames used in ave_beacon_signal. This can be used 515 * to avoid generating less reliable cqm events that would be based 516 * only on couple of received frames. 517 */ 518 unsigned int count_beacon_signal; 519 520 /* 521 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 522 * that triggered a cqm event. 0 indicates that no event has been 523 * generated for the current association. 524 */ 525 int last_cqm_event_signal; 526 527 /* 528 * State variables for keeping track of RSSI of the AP currently 529 * connected to and informing driver when RSSI has gone 530 * below/above a certain threshold. 531 */ 532 int rssi_min_thold, rssi_max_thold; 533 int last_ave_beacon_signal; 534 535 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 536 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 537 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 538 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 539 540 /* TDLS support */ 541 u8 tdls_peer[ETH_ALEN] __aligned(2); 542 struct delayed_work tdls_peer_del_work; 543 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 544 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 545 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 546 bool tdls_chan_switch_prohibited; 547 548 /* WMM-AC TSPEC support */ 549 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 550 /* Use a separate work struct so that we can do something here 551 * while the sdata->work is flushing the queues, for example. 552 * otherwise, in scenarios where we hardly get any traffic out 553 * on the BE queue, but there's a lot of VO traffic, we might 554 * get stuck in a downgraded situation and flush takes forever. 555 */ 556 struct delayed_work tx_tspec_wk; 557 }; 558 559 struct ieee80211_if_ibss { 560 struct timer_list timer; 561 struct work_struct csa_connection_drop_work; 562 563 unsigned long last_scan_completed; 564 565 u32 basic_rates; 566 567 bool fixed_bssid; 568 bool fixed_channel; 569 bool privacy; 570 571 bool control_port; 572 bool userspace_handles_dfs; 573 574 u8 bssid[ETH_ALEN] __aligned(2); 575 u8 ssid[IEEE80211_MAX_SSID_LEN]; 576 u8 ssid_len, ie_len; 577 u8 *ie; 578 struct cfg80211_chan_def chandef; 579 580 unsigned long ibss_join_req; 581 /* probe response/beacon for IBSS */ 582 struct beacon_data __rcu *presp; 583 584 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 585 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 586 587 spinlock_t incomplete_lock; 588 struct list_head incomplete_stations; 589 590 enum { 591 IEEE80211_IBSS_MLME_SEARCH, 592 IEEE80211_IBSS_MLME_JOINED, 593 } state; 594 }; 595 596 /** 597 * struct ieee80211_if_ocb - OCB mode state 598 * 599 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 600 * @wrkq_flags: OCB deferred task action 601 * @incomplete_lock: delayed STA insertion lock 602 * @incomplete_stations: list of STAs waiting for delayed insertion 603 * @joined: indication if the interface is connected to an OCB network 604 */ 605 struct ieee80211_if_ocb { 606 struct timer_list housekeeping_timer; 607 unsigned long wrkq_flags; 608 609 spinlock_t incomplete_lock; 610 struct list_head incomplete_stations; 611 612 bool joined; 613 }; 614 615 /** 616 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 617 * 618 * these declarations define the interface, which enables 619 * vendor-specific mesh synchronization 620 * 621 */ 622 struct ieee802_11_elems; 623 struct ieee80211_mesh_sync_ops { 624 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 625 u16 stype, 626 struct ieee80211_mgmt *mgmt, 627 struct ieee802_11_elems *elems, 628 struct ieee80211_rx_status *rx_status); 629 630 /* should be called with beacon_data under RCU read lock */ 631 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 632 struct beacon_data *beacon); 633 /* add other framework functions here */ 634 }; 635 636 struct mesh_csa_settings { 637 struct rcu_head rcu_head; 638 struct cfg80211_csa_settings settings; 639 }; 640 641 struct ieee80211_if_mesh { 642 struct timer_list housekeeping_timer; 643 struct timer_list mesh_path_timer; 644 struct timer_list mesh_path_root_timer; 645 646 unsigned long wrkq_flags; 647 unsigned long mbss_changed; 648 649 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 650 size_t mesh_id_len; 651 /* Active Path Selection Protocol Identifier */ 652 u8 mesh_pp_id; 653 /* Active Path Selection Metric Identifier */ 654 u8 mesh_pm_id; 655 /* Congestion Control Mode Identifier */ 656 u8 mesh_cc_id; 657 /* Synchronization Protocol Identifier */ 658 u8 mesh_sp_id; 659 /* Authentication Protocol Identifier */ 660 u8 mesh_auth_id; 661 /* Local mesh Sequence Number */ 662 u32 sn; 663 /* Last used PREQ ID */ 664 u32 preq_id; 665 atomic_t mpaths; 666 /* Timestamp of last SN update */ 667 unsigned long last_sn_update; 668 /* Time when it's ok to send next PERR */ 669 unsigned long next_perr; 670 /* Timestamp of last PREQ sent */ 671 unsigned long last_preq; 672 struct mesh_rmc *rmc; 673 spinlock_t mesh_preq_queue_lock; 674 struct mesh_preq_queue preq_queue; 675 int preq_queue_len; 676 struct mesh_stats mshstats; 677 struct mesh_config mshcfg; 678 atomic_t estab_plinks; 679 u32 mesh_seqnum; 680 bool accepting_plinks; 681 int num_gates; 682 struct beacon_data __rcu *beacon; 683 const u8 *ie; 684 u8 ie_len; 685 enum { 686 IEEE80211_MESH_SEC_NONE = 0x0, 687 IEEE80211_MESH_SEC_AUTHED = 0x1, 688 IEEE80211_MESH_SEC_SECURED = 0x2, 689 } security; 690 bool user_mpm; 691 /* Extensible Synchronization Framework */ 692 const struct ieee80211_mesh_sync_ops *sync_ops; 693 s64 sync_offset_clockdrift_max; 694 spinlock_t sync_offset_lock; 695 bool adjusting_tbtt; 696 /* mesh power save */ 697 enum nl80211_mesh_power_mode nonpeer_pm; 698 int ps_peers_light_sleep; 699 int ps_peers_deep_sleep; 700 struct ps_data ps; 701 /* Channel Switching Support */ 702 struct mesh_csa_settings __rcu *csa; 703 enum { 704 IEEE80211_MESH_CSA_ROLE_NONE, 705 IEEE80211_MESH_CSA_ROLE_INIT, 706 IEEE80211_MESH_CSA_ROLE_REPEATER, 707 } csa_role; 708 u8 chsw_ttl; 709 u16 pre_value; 710 711 /* offset from skb->data while building IE */ 712 int meshconf_offset; 713 }; 714 715 #ifdef CONFIG_MAC80211_MESH 716 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 717 do { (msh)->mshstats.name++; } while (0) 718 #else 719 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 720 do { } while (0) 721 #endif 722 723 /** 724 * enum ieee80211_sub_if_data_flags - virtual interface flags 725 * 726 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 727 * @IEEE80211_SDATA_PROMISC: interface is promisc 728 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 729 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 730 * associated stations and deliver multicast frames both 731 * back to wireless media and to the local net stack. 732 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 733 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 734 */ 735 enum ieee80211_sub_if_data_flags { 736 IEEE80211_SDATA_ALLMULTI = BIT(0), 737 IEEE80211_SDATA_PROMISC = BIT(1), 738 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 739 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 740 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 741 IEEE80211_SDATA_IN_DRIVER = BIT(5), 742 }; 743 744 /** 745 * enum ieee80211_sdata_state_bits - virtual interface state bits 746 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 747 * mirrors netif_running() but is separate for interface type 748 * change handling while the interface is up 749 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 750 * mode, so queues are stopped 751 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 752 * to offchannel, reset when offchannel returns 753 */ 754 enum ieee80211_sdata_state_bits { 755 SDATA_STATE_RUNNING, 756 SDATA_STATE_OFFCHANNEL, 757 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 758 }; 759 760 /** 761 * enum ieee80211_chanctx_mode - channel context configuration mode 762 * 763 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 764 * multiple interfaces 765 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 766 * only by a single interface. This can be used for example for 767 * non-fixed channel IBSS. 768 */ 769 enum ieee80211_chanctx_mode { 770 IEEE80211_CHANCTX_SHARED, 771 IEEE80211_CHANCTX_EXCLUSIVE 772 }; 773 774 /** 775 * enum ieee80211_chanctx_replace_state - channel context replacement state 776 * 777 * This is used for channel context in-place reservations that require channel 778 * context switch/swap. 779 * 780 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 781 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 782 * by a (not yet registered) channel context pointed by %replace_ctx. 783 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 784 * replaces an existing channel context pointed to by %replace_ctx. 785 */ 786 enum ieee80211_chanctx_replace_state { 787 IEEE80211_CHANCTX_REPLACE_NONE, 788 IEEE80211_CHANCTX_WILL_BE_REPLACED, 789 IEEE80211_CHANCTX_REPLACES_OTHER, 790 }; 791 792 struct ieee80211_chanctx { 793 struct list_head list; 794 struct rcu_head rcu_head; 795 796 struct list_head assigned_vifs; 797 struct list_head reserved_vifs; 798 799 enum ieee80211_chanctx_replace_state replace_state; 800 struct ieee80211_chanctx *replace_ctx; 801 802 enum ieee80211_chanctx_mode mode; 803 bool driver_present; 804 805 struct ieee80211_chanctx_conf conf; 806 }; 807 808 struct mac80211_qos_map { 809 struct cfg80211_qos_map qos_map; 810 struct rcu_head rcu_head; 811 }; 812 813 struct ieee80211_sub_if_data { 814 struct list_head list; 815 816 struct wireless_dev wdev; 817 818 /* keys */ 819 struct list_head key_list; 820 821 /* count for keys needing tailroom space allocation */ 822 int crypto_tx_tailroom_needed_cnt; 823 int crypto_tx_tailroom_pending_dec; 824 struct delayed_work dec_tailroom_needed_wk; 825 826 struct net_device *dev; 827 struct ieee80211_local *local; 828 829 unsigned int flags; 830 831 unsigned long state; 832 833 int drop_unencrypted; 834 835 char name[IFNAMSIZ]; 836 837 /* Fragment table for host-based reassembly */ 838 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 839 unsigned int fragment_next; 840 841 /* TID bitmap for NoAck policy */ 842 u16 noack_map; 843 844 /* bit field of ACM bits (BIT(802.1D tag)) */ 845 u8 wmm_acm; 846 847 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 848 struct ieee80211_key __rcu *default_unicast_key; 849 struct ieee80211_key __rcu *default_multicast_key; 850 struct ieee80211_key __rcu *default_mgmt_key; 851 852 u16 sequence_number; 853 __be16 control_port_protocol; 854 bool control_port_no_encrypt; 855 int encrypt_headroom; 856 857 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 858 struct mac80211_qos_map __rcu *qos_map; 859 860 struct work_struct csa_finalize_work; 861 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 862 struct cfg80211_chan_def csa_chandef; 863 864 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 865 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 866 867 /* context reservation -- protected with chanctx_mtx */ 868 struct ieee80211_chanctx *reserved_chanctx; 869 struct cfg80211_chan_def reserved_chandef; 870 bool reserved_radar_required; 871 bool reserved_ready; 872 873 /* used to reconfigure hardware SM PS */ 874 struct work_struct recalc_smps; 875 876 struct work_struct work; 877 struct sk_buff_head skb_queue; 878 879 u8 needed_rx_chains; 880 enum ieee80211_smps_mode smps_mode; 881 882 int user_power_level; /* in dBm */ 883 int ap_power_level; /* in dBm */ 884 885 bool radar_required; 886 struct delayed_work dfs_cac_timer_work; 887 888 /* 889 * AP this belongs to: self in AP mode and 890 * corresponding AP in VLAN mode, NULL for 891 * all others (might be needed later in IBSS) 892 */ 893 struct ieee80211_if_ap *bss; 894 895 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 896 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 897 898 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 899 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 900 901 union { 902 struct ieee80211_if_ap ap; 903 struct ieee80211_if_wds wds; 904 struct ieee80211_if_vlan vlan; 905 struct ieee80211_if_managed mgd; 906 struct ieee80211_if_ibss ibss; 907 struct ieee80211_if_mesh mesh; 908 struct ieee80211_if_ocb ocb; 909 u32 mntr_flags; 910 } u; 911 912 #ifdef CONFIG_MAC80211_DEBUGFS 913 struct { 914 struct dentry *subdir_stations; 915 struct dentry *default_unicast_key; 916 struct dentry *default_multicast_key; 917 struct dentry *default_mgmt_key; 918 } debugfs; 919 #endif 920 921 /* must be last, dynamically sized area in this! */ 922 struct ieee80211_vif vif; 923 }; 924 925 static inline 926 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 927 { 928 return container_of(p, struct ieee80211_sub_if_data, vif); 929 } 930 931 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 932 __acquires(&sdata->wdev.mtx) 933 { 934 mutex_lock(&sdata->wdev.mtx); 935 __acquire(&sdata->wdev.mtx); 936 } 937 938 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 939 __releases(&sdata->wdev.mtx) 940 { 941 mutex_unlock(&sdata->wdev.mtx); 942 __release(&sdata->wdev.mtx); 943 } 944 945 #define sdata_dereference(p, sdata) \ 946 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 947 948 static inline void 949 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 950 { 951 lockdep_assert_held(&sdata->wdev.mtx); 952 } 953 954 static inline enum ieee80211_band 955 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 956 { 957 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 958 struct ieee80211_chanctx_conf *chanctx_conf; 959 960 rcu_read_lock(); 961 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 962 if (!WARN_ON(!chanctx_conf)) 963 band = chanctx_conf->def.chan->band; 964 rcu_read_unlock(); 965 966 return band; 967 } 968 969 static inline int 970 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 971 { 972 switch (chandef->width) { 973 case NL80211_CHAN_WIDTH_5: 974 return 2; 975 case NL80211_CHAN_WIDTH_10: 976 return 1; 977 default: 978 return 0; 979 } 980 } 981 982 static inline int 983 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 984 { 985 struct ieee80211_chanctx_conf *chanctx_conf; 986 int shift = 0; 987 988 rcu_read_lock(); 989 chanctx_conf = rcu_dereference(vif->chanctx_conf); 990 if (chanctx_conf) 991 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 992 rcu_read_unlock(); 993 994 return shift; 995 } 996 997 struct ieee80211_rx_agg { 998 u8 addr[ETH_ALEN]; 999 u16 tid; 1000 }; 1001 1002 enum sdata_queue_type { 1003 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1004 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1005 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1006 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1007 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1008 IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5, 1009 }; 1010 1011 enum { 1012 IEEE80211_RX_MSG = 1, 1013 IEEE80211_TX_STATUS_MSG = 2, 1014 }; 1015 1016 enum queue_stop_reason { 1017 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1018 IEEE80211_QUEUE_STOP_REASON_PS, 1019 IEEE80211_QUEUE_STOP_REASON_CSA, 1020 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1021 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1022 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1023 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1024 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1025 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1026 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1027 1028 IEEE80211_QUEUE_STOP_REASONS, 1029 }; 1030 1031 #ifdef CONFIG_MAC80211_LEDS 1032 struct tpt_led_trigger { 1033 struct led_trigger trig; 1034 char name[32]; 1035 const struct ieee80211_tpt_blink *blink_table; 1036 unsigned int blink_table_len; 1037 struct timer_list timer; 1038 unsigned long prev_traffic; 1039 unsigned long tx_bytes, rx_bytes; 1040 unsigned int active, want; 1041 bool running; 1042 }; 1043 #endif 1044 1045 /* 1046 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 1047 * 1048 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 1049 * certain latency range (in Milliseconds). Each station that uses these 1050 * ranges will have bins to count the amount of frames received in that range. 1051 * The user can configure the ranges via debugfs. 1052 * If ranges is NULL then Tx latency statistics bins are disabled for all 1053 * stations. 1054 * 1055 * @n_ranges: number of ranges that are taken in account 1056 * @ranges: the ranges that the user requested or NULL if disabled. 1057 */ 1058 struct ieee80211_tx_latency_bin_ranges { 1059 int n_ranges; 1060 u32 ranges[]; 1061 }; 1062 1063 /** 1064 * mac80211 scan flags - currently active scan mode 1065 * 1066 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1067 * well be on the operating channel 1068 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1069 * determine if we are on the operating channel or not 1070 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1071 * channel. This should not interrupt normal traffic. 1072 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1073 * that the scan completed. 1074 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1075 * a scan complete for an aborted scan. 1076 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1077 * cancelled. 1078 */ 1079 enum { 1080 SCAN_SW_SCANNING, 1081 SCAN_HW_SCANNING, 1082 SCAN_ONCHANNEL_SCANNING, 1083 SCAN_COMPLETED, 1084 SCAN_ABORTED, 1085 SCAN_HW_CANCELLED, 1086 }; 1087 1088 /** 1089 * enum mac80211_scan_state - scan state machine states 1090 * 1091 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1092 * determines if we should keep on scanning or switch back to the 1093 * operating channel 1094 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1095 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1096 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1097 * send out data 1098 * @SCAN_RESUME: Resume the scan and scan the next channel 1099 * @SCAN_ABORT: Abort the scan and go back to operating channel 1100 */ 1101 enum mac80211_scan_state { 1102 SCAN_DECISION, 1103 SCAN_SET_CHANNEL, 1104 SCAN_SEND_PROBE, 1105 SCAN_SUSPEND, 1106 SCAN_RESUME, 1107 SCAN_ABORT, 1108 }; 1109 1110 struct ieee80211_local { 1111 /* embed the driver visible part. 1112 * don't cast (use the static inlines below), but we keep 1113 * it first anyway so they become a no-op */ 1114 struct ieee80211_hw hw; 1115 1116 const struct ieee80211_ops *ops; 1117 1118 /* 1119 * private workqueue to mac80211. mac80211 makes this accessible 1120 * via ieee80211_queue_work() 1121 */ 1122 struct workqueue_struct *workqueue; 1123 1124 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1125 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1126 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1127 spinlock_t queue_stop_reason_lock; 1128 1129 int open_count; 1130 int monitors, cooked_mntrs; 1131 /* number of interfaces with corresponding FIF_ flags */ 1132 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1133 fif_probe_req; 1134 int probe_req_reg; 1135 unsigned int filter_flags; /* FIF_* */ 1136 1137 bool wiphy_ciphers_allocated; 1138 1139 bool use_chanctx; 1140 1141 /* protects the aggregated multicast list and filter calls */ 1142 spinlock_t filter_lock; 1143 1144 /* used for uploading changed mc list */ 1145 struct work_struct reconfig_filter; 1146 1147 /* aggregated multicast list */ 1148 struct netdev_hw_addr_list mc_list; 1149 1150 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1151 1152 /* 1153 * suspended is true if we finished all the suspend _and_ we have 1154 * not yet come up from resume. This is to be used by mac80211 1155 * to ensure driver sanity during suspend and mac80211's own 1156 * sanity. It can eventually be used for WoW as well. 1157 */ 1158 bool suspended; 1159 1160 /* 1161 * Resuming is true while suspended, but when we're reprogramming the 1162 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1163 * again even though some other parts of the stack are still suspended 1164 * and we still drop received frames to avoid waking the stack. 1165 */ 1166 bool resuming; 1167 1168 /* 1169 * quiescing is true during the suspend process _only_ to 1170 * ease timer cancelling etc. 1171 */ 1172 bool quiescing; 1173 1174 /* device is started */ 1175 bool started; 1176 1177 /* device is during a HW reconfig */ 1178 bool in_reconfig; 1179 1180 /* wowlan is enabled -- don't reconfig on resume */ 1181 bool wowlan; 1182 1183 struct work_struct radar_detected_work; 1184 1185 /* number of RX chains the hardware has */ 1186 u8 rx_chains; 1187 1188 int tx_headroom; /* required headroom for hardware/radiotap */ 1189 1190 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1191 * added to skb_queue will be processed, but frames in 1192 * skb_queue_unreliable may be dropped if the total length of these 1193 * queues increases over the limit. */ 1194 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1195 struct tasklet_struct tasklet; 1196 struct sk_buff_head skb_queue; 1197 struct sk_buff_head skb_queue_unreliable; 1198 1199 spinlock_t rx_path_lock; 1200 1201 /* Station data */ 1202 /* 1203 * The mutex only protects the list, hash table and 1204 * counter, reads are done with RCU. 1205 */ 1206 struct mutex sta_mtx; 1207 spinlock_t tim_lock; 1208 unsigned long num_sta; 1209 struct list_head sta_list; 1210 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1211 struct timer_list sta_cleanup; 1212 int sta_generation; 1213 1214 /* 1215 * Tx latency statistics parameters for all stations. 1216 * Can enable via debugfs (NULL when disabled). 1217 */ 1218 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1219 1220 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1221 struct tasklet_struct tx_pending_tasklet; 1222 1223 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1224 1225 /* number of interfaces with corresponding IFF_ flags */ 1226 atomic_t iff_allmultis, iff_promiscs; 1227 1228 struct rate_control_ref *rate_ctrl; 1229 1230 struct crypto_cipher *wep_tx_tfm; 1231 struct crypto_cipher *wep_rx_tfm; 1232 u32 wep_iv; 1233 1234 /* see iface.c */ 1235 struct list_head interfaces; 1236 struct mutex iflist_mtx; 1237 1238 /* 1239 * Key mutex, protects sdata's key_list and sta_info's 1240 * key pointers (write access, they're RCU.) 1241 */ 1242 struct mutex key_mtx; 1243 1244 /* mutex for scan and work locking */ 1245 struct mutex mtx; 1246 1247 /* Scanning and BSS list */ 1248 unsigned long scanning; 1249 struct cfg80211_ssid scan_ssid; 1250 struct cfg80211_scan_request *int_scan_req; 1251 struct cfg80211_scan_request __rcu *scan_req; 1252 struct ieee80211_scan_request *hw_scan_req; 1253 struct cfg80211_chan_def scan_chandef; 1254 enum ieee80211_band hw_scan_band; 1255 int scan_channel_idx; 1256 int scan_ies_len; 1257 int hw_scan_ies_bufsize; 1258 1259 struct work_struct sched_scan_stopped_work; 1260 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1261 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1262 u8 scan_addr[ETH_ALEN]; 1263 1264 unsigned long leave_oper_channel_time; 1265 enum mac80211_scan_state next_scan_state; 1266 struct delayed_work scan_work; 1267 struct ieee80211_sub_if_data __rcu *scan_sdata; 1268 /* For backward compatibility only -- do not use */ 1269 struct cfg80211_chan_def _oper_chandef; 1270 1271 /* Temporary remain-on-channel for off-channel operations */ 1272 struct ieee80211_channel *tmp_channel; 1273 1274 /* channel contexts */ 1275 struct list_head chanctx_list; 1276 struct mutex chanctx_mtx; 1277 1278 /* SNMP counters */ 1279 /* dot11CountersTable */ 1280 u32 dot11TransmittedFragmentCount; 1281 u32 dot11MulticastTransmittedFrameCount; 1282 u32 dot11FailedCount; 1283 u32 dot11RetryCount; 1284 u32 dot11MultipleRetryCount; 1285 u32 dot11FrameDuplicateCount; 1286 u32 dot11ReceivedFragmentCount; 1287 u32 dot11MulticastReceivedFrameCount; 1288 u32 dot11TransmittedFrameCount; 1289 1290 #ifdef CONFIG_MAC80211_LEDS 1291 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1292 struct tpt_led_trigger *tpt_led_trigger; 1293 char tx_led_name[32], rx_led_name[32], 1294 assoc_led_name[32], radio_led_name[32]; 1295 #endif 1296 1297 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1298 /* TX/RX handler statistics */ 1299 unsigned int tx_handlers_drop; 1300 unsigned int tx_handlers_queued; 1301 unsigned int tx_handlers_drop_unencrypted; 1302 unsigned int tx_handlers_drop_fragment; 1303 unsigned int tx_handlers_drop_wep; 1304 unsigned int tx_handlers_drop_not_assoc; 1305 unsigned int tx_handlers_drop_unauth_port; 1306 unsigned int rx_handlers_drop; 1307 unsigned int rx_handlers_queued; 1308 unsigned int rx_handlers_drop_nullfunc; 1309 unsigned int rx_handlers_drop_defrag; 1310 unsigned int rx_handlers_drop_short; 1311 unsigned int tx_expand_skb_head; 1312 unsigned int tx_expand_skb_head_cloned; 1313 unsigned int rx_expand_skb_head; 1314 unsigned int rx_expand_skb_head2; 1315 unsigned int rx_handlers_fragments; 1316 unsigned int tx_status_drop; 1317 #define I802_DEBUG_INC(c) (c)++ 1318 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1319 #define I802_DEBUG_INC(c) do { } while (0) 1320 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1321 1322 1323 int total_ps_buffered; /* total number of all buffered unicast and 1324 * multicast packets for power saving stations 1325 */ 1326 1327 bool pspolling; 1328 bool offchannel_ps_enabled; 1329 /* 1330 * PS can only be enabled when we have exactly one managed 1331 * interface (and monitors) in PS, this then points there. 1332 */ 1333 struct ieee80211_sub_if_data *ps_sdata; 1334 struct work_struct dynamic_ps_enable_work; 1335 struct work_struct dynamic_ps_disable_work; 1336 struct timer_list dynamic_ps_timer; 1337 struct notifier_block network_latency_notifier; 1338 struct notifier_block ifa_notifier; 1339 struct notifier_block ifa6_notifier; 1340 1341 /* 1342 * The dynamic ps timeout configured from user space via WEXT - 1343 * this will override whatever chosen by mac80211 internally. 1344 */ 1345 int dynamic_ps_forced_timeout; 1346 1347 int user_power_level; /* in dBm, for all interfaces */ 1348 1349 enum ieee80211_smps_mode smps_mode; 1350 1351 struct work_struct restart_work; 1352 1353 #ifdef CONFIG_MAC80211_DEBUGFS 1354 struct local_debugfsdentries { 1355 struct dentry *rcdir; 1356 struct dentry *keys; 1357 } debugfs; 1358 #endif 1359 1360 /* 1361 * Remain-on-channel support 1362 */ 1363 struct list_head roc_list; 1364 struct work_struct hw_roc_start, hw_roc_done; 1365 unsigned long hw_roc_start_time; 1366 u64 roc_cookie_counter; 1367 1368 struct idr ack_status_frames; 1369 spinlock_t ack_status_lock; 1370 1371 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1372 1373 struct napi_struct *napi; 1374 1375 /* virtual monitor interface */ 1376 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1377 struct cfg80211_chan_def monitor_chandef; 1378 1379 /* extended capabilities provided by mac80211 */ 1380 u8 ext_capa[8]; 1381 }; 1382 1383 static inline struct ieee80211_sub_if_data * 1384 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1385 { 1386 return netdev_priv(dev); 1387 } 1388 1389 static inline struct ieee80211_sub_if_data * 1390 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1391 { 1392 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1393 } 1394 1395 /* this struct represents 802.11n's RA/TID combination */ 1396 struct ieee80211_ra_tid { 1397 u8 ra[ETH_ALEN]; 1398 u16 tid; 1399 }; 1400 1401 /* this struct holds the value parsing from channel switch IE */ 1402 struct ieee80211_csa_ie { 1403 struct cfg80211_chan_def chandef; 1404 u8 mode; 1405 u8 count; 1406 u8 ttl; 1407 u16 pre_value; 1408 }; 1409 1410 /* Parsed Information Elements */ 1411 struct ieee802_11_elems { 1412 const u8 *ie_start; 1413 size_t total_len; 1414 1415 /* pointers to IEs */ 1416 const struct ieee80211_tdls_lnkie *lnk_id; 1417 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1418 const u8 *ext_capab; 1419 const u8 *ssid; 1420 const u8 *supp_rates; 1421 const u8 *ds_params; 1422 const struct ieee80211_tim_ie *tim; 1423 const u8 *challenge; 1424 const u8 *rsn; 1425 const u8 *erp_info; 1426 const u8 *ext_supp_rates; 1427 const u8 *wmm_info; 1428 const u8 *wmm_param; 1429 const struct ieee80211_ht_cap *ht_cap_elem; 1430 const struct ieee80211_ht_operation *ht_operation; 1431 const struct ieee80211_vht_cap *vht_cap_elem; 1432 const struct ieee80211_vht_operation *vht_operation; 1433 const struct ieee80211_meshconf_ie *mesh_config; 1434 const u8 *mesh_id; 1435 const u8 *peering; 1436 const __le16 *awake_window; 1437 const u8 *preq; 1438 const u8 *prep; 1439 const u8 *perr; 1440 const struct ieee80211_rann_ie *rann; 1441 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1442 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1443 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1444 const u8 *country_elem; 1445 const u8 *pwr_constr_elem; 1446 const u8 *cisco_dtpc_elem; 1447 const struct ieee80211_timeout_interval_ie *timeout_int; 1448 const u8 *opmode_notif; 1449 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1450 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1451 1452 /* length of them, respectively */ 1453 u8 ext_capab_len; 1454 u8 ssid_len; 1455 u8 supp_rates_len; 1456 u8 tim_len; 1457 u8 challenge_len; 1458 u8 rsn_len; 1459 u8 ext_supp_rates_len; 1460 u8 wmm_info_len; 1461 u8 wmm_param_len; 1462 u8 mesh_id_len; 1463 u8 peering_len; 1464 u8 preq_len; 1465 u8 prep_len; 1466 u8 perr_len; 1467 u8 country_elem_len; 1468 1469 /* whether a parse error occurred while retrieving these elements */ 1470 bool parse_error; 1471 }; 1472 1473 static inline struct ieee80211_local *hw_to_local( 1474 struct ieee80211_hw *hw) 1475 { 1476 return container_of(hw, struct ieee80211_local, hw); 1477 } 1478 1479 1480 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1481 { 1482 return ether_addr_equal(raddr, addr) || 1483 is_broadcast_ether_addr(raddr); 1484 } 1485 1486 static inline bool 1487 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1488 { 1489 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1490 status->flag & RX_FLAG_MACTIME_END); 1491 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1492 } 1493 1494 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1495 struct ieee80211_rx_status *status, 1496 unsigned int mpdu_len, 1497 unsigned int mpdu_offset); 1498 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1499 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1500 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1501 u32 changed); 1502 void ieee80211_configure_filter(struct ieee80211_local *local); 1503 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1504 1505 /* STA code */ 1506 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1507 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1508 struct cfg80211_auth_request *req); 1509 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1510 struct cfg80211_assoc_request *req); 1511 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1512 struct cfg80211_deauth_request *req); 1513 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1514 struct cfg80211_disassoc_request *req); 1515 void ieee80211_send_pspoll(struct ieee80211_local *local, 1516 struct ieee80211_sub_if_data *sdata); 1517 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1518 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1519 int ieee80211_max_network_latency(struct notifier_block *nb, 1520 unsigned long data, void *dummy); 1521 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1522 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1523 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1524 struct sk_buff *skb); 1525 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1526 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1527 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1528 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1529 __le16 fc, bool acked); 1530 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1531 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1532 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1533 1534 /* IBSS code */ 1535 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1536 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1537 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1538 const u8 *bssid, const u8 *addr, u32 supp_rates); 1539 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1540 struct cfg80211_ibss_params *params); 1541 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1542 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1543 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1544 struct sk_buff *skb); 1545 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1546 struct cfg80211_csa_settings *csa_settings); 1547 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1548 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1549 1550 /* OCB code */ 1551 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1552 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1553 const u8 *bssid, const u8 *addr, u32 supp_rates); 1554 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1555 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1556 struct ocb_setup *setup); 1557 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1558 1559 /* mesh code */ 1560 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1561 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1562 struct sk_buff *skb); 1563 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1564 struct cfg80211_csa_settings *csa_settings); 1565 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1566 1567 /* scan/BSS handling */ 1568 void ieee80211_scan_work(struct work_struct *work); 1569 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1570 const u8 *ssid, u8 ssid_len, 1571 struct ieee80211_channel *chan, 1572 enum nl80211_bss_scan_width scan_width); 1573 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1574 struct cfg80211_scan_request *req); 1575 void ieee80211_scan_cancel(struct ieee80211_local *local); 1576 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1577 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1578 1579 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1580 struct ieee80211_bss * 1581 ieee80211_bss_info_update(struct ieee80211_local *local, 1582 struct ieee80211_rx_status *rx_status, 1583 struct ieee80211_mgmt *mgmt, 1584 size_t len, 1585 struct ieee802_11_elems *elems, 1586 struct ieee80211_channel *channel); 1587 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1588 struct ieee80211_bss *bss); 1589 1590 /* scheduled scan handling */ 1591 int 1592 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1593 struct cfg80211_sched_scan_request *req); 1594 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1595 struct cfg80211_sched_scan_request *req); 1596 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1597 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1598 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1599 1600 /* off-channel helpers */ 1601 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1602 void ieee80211_offchannel_return(struct ieee80211_local *local); 1603 void ieee80211_roc_setup(struct ieee80211_local *local); 1604 void ieee80211_start_next_roc(struct ieee80211_local *local); 1605 void ieee80211_roc_purge(struct ieee80211_local *local, 1606 struct ieee80211_sub_if_data *sdata); 1607 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1608 void ieee80211_sw_roc_work(struct work_struct *work); 1609 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1610 1611 /* channel switch handling */ 1612 void ieee80211_csa_finalize_work(struct work_struct *work); 1613 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1614 struct cfg80211_csa_settings *params); 1615 1616 /* interface handling */ 1617 int ieee80211_iface_init(void); 1618 void ieee80211_iface_exit(void); 1619 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1620 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1621 struct vif_params *params); 1622 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1623 enum nl80211_iftype type); 1624 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1625 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1626 u32 ieee80211_idle_off(struct ieee80211_local *local); 1627 void ieee80211_recalc_idle(struct ieee80211_local *local); 1628 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1629 const int offset); 1630 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1631 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1632 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1633 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1634 1635 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1636 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1637 bool update_bss); 1638 1639 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1640 { 1641 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1642 } 1643 1644 /* tx handling */ 1645 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1646 void ieee80211_tx_pending(unsigned long data); 1647 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1648 struct net_device *dev); 1649 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1650 struct net_device *dev); 1651 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1652 struct net_device *dev, 1653 u32 info_flags); 1654 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1655 struct sk_buff_head *skbs); 1656 struct sk_buff * 1657 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1658 struct sk_buff *skb, u32 info_flags); 1659 1660 /* HT */ 1661 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1662 struct ieee80211_sta_ht_cap *ht_cap); 1663 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1664 struct ieee80211_supported_band *sband, 1665 const struct ieee80211_ht_cap *ht_cap_ie, 1666 struct sta_info *sta); 1667 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1668 const u8 *da, u16 tid, 1669 u16 initiator, u16 reason_code); 1670 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1671 enum ieee80211_smps_mode smps, const u8 *da, 1672 const u8 *bssid); 1673 void ieee80211_request_smps_ap_work(struct work_struct *work); 1674 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1675 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1676 enum ieee80211_smps_mode smps_mode_new); 1677 1678 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1679 u16 initiator, u16 reason, bool stop); 1680 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1681 u16 initiator, u16 reason, bool stop); 1682 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1683 u8 dialog_token, u16 timeout, 1684 u16 start_seq_num, u16 ba_policy, u16 tid, 1685 u16 buf_size, bool tx, bool auto_seq); 1686 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1687 enum ieee80211_agg_stop_reason reason); 1688 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1689 struct sta_info *sta, 1690 struct ieee80211_mgmt *mgmt, size_t len); 1691 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1692 struct sta_info *sta, 1693 struct ieee80211_mgmt *mgmt, 1694 size_t len); 1695 void ieee80211_process_addba_request(struct ieee80211_local *local, 1696 struct sta_info *sta, 1697 struct ieee80211_mgmt *mgmt, 1698 size_t len); 1699 1700 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1701 enum ieee80211_agg_stop_reason reason); 1702 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1703 enum ieee80211_agg_stop_reason reason); 1704 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1705 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1706 void ieee80211_ba_session_work(struct work_struct *work); 1707 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1708 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1709 1710 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1711 1712 /* VHT */ 1713 void 1714 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1715 struct ieee80211_supported_band *sband, 1716 const struct ieee80211_vht_cap *vht_cap_ie, 1717 struct sta_info *sta); 1718 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1719 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1720 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1721 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1722 struct sta_info *sta, u8 opmode, 1723 enum ieee80211_band band, bool nss_only); 1724 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1725 struct sta_info *sta, u8 opmode, 1726 enum ieee80211_band band, bool nss_only); 1727 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1728 struct ieee80211_sta_vht_cap *vht_cap); 1729 1730 /* Spectrum management */ 1731 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1732 struct ieee80211_mgmt *mgmt, 1733 size_t len); 1734 /** 1735 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1736 * @sdata: the sdata of the interface which has received the frame 1737 * @elems: parsed 802.11 elements received with the frame 1738 * @current_band: indicates the current band 1739 * @sta_flags: contains information about own capabilities and restrictions 1740 * to decide which channel switch announcements can be accepted. Only the 1741 * following subset of &enum ieee80211_sta_flags are evaluated: 1742 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1743 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1744 * %IEEE80211_STA_DISABLE_160MHZ. 1745 * @bssid: the currently connected bssid (for reporting) 1746 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1747 All of them will be filled with if success only. 1748 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1749 */ 1750 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1751 struct ieee802_11_elems *elems, 1752 enum ieee80211_band current_band, 1753 u32 sta_flags, u8 *bssid, 1754 struct ieee80211_csa_ie *csa_ie); 1755 1756 /* Suspend/resume and hw reconfiguration */ 1757 int ieee80211_reconfig(struct ieee80211_local *local); 1758 void ieee80211_stop_device(struct ieee80211_local *local); 1759 1760 int __ieee80211_suspend(struct ieee80211_hw *hw, 1761 struct cfg80211_wowlan *wowlan); 1762 1763 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1764 { 1765 struct ieee80211_local *local = hw_to_local(hw); 1766 1767 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1768 !test_bit(SCAN_COMPLETED, &local->scanning), 1769 "%s: resume with hardware scan still in progress\n", 1770 wiphy_name(hw->wiphy)); 1771 1772 return ieee80211_reconfig(hw_to_local(hw)); 1773 } 1774 1775 /* utility functions/constants */ 1776 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1777 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1778 enum nl80211_iftype type); 1779 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1780 int rate, int erp, int short_preamble, 1781 int shift); 1782 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1783 struct ieee80211_hdr *hdr, const u8 *tsc, 1784 gfp_t gfp); 1785 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1786 bool bss_notify); 1787 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1788 1789 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1790 struct sk_buff *skb, int tid, 1791 enum ieee80211_band band); 1792 1793 static inline void 1794 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1795 struct sk_buff *skb, int tid, 1796 enum ieee80211_band band) 1797 { 1798 rcu_read_lock(); 1799 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1800 rcu_read_unlock(); 1801 } 1802 1803 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1804 struct sk_buff *skb, int tid) 1805 { 1806 struct ieee80211_chanctx_conf *chanctx_conf; 1807 1808 rcu_read_lock(); 1809 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1810 if (WARN_ON(!chanctx_conf)) { 1811 rcu_read_unlock(); 1812 kfree_skb(skb); 1813 return; 1814 } 1815 1816 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1817 chanctx_conf->def.chan->band); 1818 rcu_read_unlock(); 1819 } 1820 1821 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1822 struct sk_buff *skb) 1823 { 1824 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1825 ieee80211_tx_skb_tid(sdata, skb, 7); 1826 } 1827 1828 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1829 struct ieee802_11_elems *elems, 1830 u64 filter, u32 crc); 1831 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1832 bool action, 1833 struct ieee802_11_elems *elems) 1834 { 1835 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1836 } 1837 1838 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1839 { 1840 struct sk_buff *tail = skb_peek_tail(frames); 1841 struct ieee80211_rx_status *status; 1842 1843 if (!tail) 1844 return false; 1845 1846 status = IEEE80211_SKB_RXCB(tail); 1847 if (status->flag & RX_FLAG_AMSDU_MORE) 1848 return false; 1849 1850 return true; 1851 } 1852 1853 extern const int ieee802_1d_to_ac[8]; 1854 1855 static inline int ieee80211_ac_from_tid(int tid) 1856 { 1857 return ieee802_1d_to_ac[tid & 7]; 1858 } 1859 1860 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1861 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1862 void ieee80211_dynamic_ps_timer(unsigned long data); 1863 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1864 struct ieee80211_sub_if_data *sdata, 1865 int powersave); 1866 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1867 struct ieee80211_hdr *hdr); 1868 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1869 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1870 1871 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1872 unsigned long queues, 1873 enum queue_stop_reason reason, 1874 bool refcounted); 1875 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1876 struct ieee80211_sub_if_data *sdata, 1877 enum queue_stop_reason reason); 1878 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1879 struct ieee80211_sub_if_data *sdata, 1880 enum queue_stop_reason reason); 1881 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1882 unsigned long queues, 1883 enum queue_stop_reason reason, 1884 bool refcounted); 1885 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1886 enum queue_stop_reason reason, 1887 bool refcounted); 1888 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1889 enum queue_stop_reason reason, 1890 bool refcounted); 1891 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1892 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1893 struct sk_buff *skb); 1894 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1895 struct sk_buff_head *skbs); 1896 void ieee80211_flush_queues(struct ieee80211_local *local, 1897 struct ieee80211_sub_if_data *sdata, bool drop); 1898 void __ieee80211_flush_queues(struct ieee80211_local *local, 1899 struct ieee80211_sub_if_data *sdata, 1900 unsigned int queues, bool drop); 1901 1902 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1903 { 1904 /* 1905 * If quiescing is set, we are racing with __ieee80211_suspend. 1906 * __ieee80211_suspend flushes the workers after setting quiescing, 1907 * and we check quiescing / suspended before enqueing new workers. 1908 * We should abort the worker to avoid the races below. 1909 */ 1910 if (local->quiescing) 1911 return false; 1912 1913 /* 1914 * We might already be suspended if the following scenario occurs: 1915 * __ieee80211_suspend Control path 1916 * 1917 * if (local->quiescing) 1918 * return; 1919 * local->quiescing = true; 1920 * flush_workqueue(); 1921 * queue_work(...); 1922 * local->suspended = true; 1923 * local->quiescing = false; 1924 * worker starts running... 1925 */ 1926 if (local->suspended) 1927 return false; 1928 1929 return true; 1930 } 1931 1932 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1933 u16 transaction, u16 auth_alg, u16 status, 1934 const u8 *extra, size_t extra_len, const u8 *bssid, 1935 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1936 u32 tx_flags); 1937 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1938 const u8 *bssid, u16 stype, u16 reason, 1939 bool send_frame, u8 *frame_buf); 1940 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1941 size_t buffer_len, 1942 struct ieee80211_scan_ies *ie_desc, 1943 const u8 *ie, size_t ie_len, 1944 u8 bands_used, u32 *rate_masks, 1945 struct cfg80211_chan_def *chandef); 1946 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1947 const u8 *src, const u8 *dst, 1948 u32 ratemask, 1949 struct ieee80211_channel *chan, 1950 const u8 *ssid, size_t ssid_len, 1951 const u8 *ie, size_t ie_len, 1952 bool directed); 1953 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1954 const u8 *src, const u8 *dst, 1955 const u8 *ssid, size_t ssid_len, 1956 const u8 *ie, size_t ie_len, 1957 u32 ratemask, bool directed, u32 tx_flags, 1958 struct ieee80211_channel *channel, bool scan); 1959 1960 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1961 struct ieee802_11_elems *elems, 1962 enum ieee80211_band band, u32 *basic_rates); 1963 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1964 enum ieee80211_smps_mode smps_mode); 1965 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1966 enum ieee80211_smps_mode smps_mode); 1967 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1968 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1969 1970 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 1971 const u8 *ids, int n_ids, 1972 const u8 *after_ric, int n_after_ric, 1973 size_t offset); 1974 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1975 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1976 u16 cap); 1977 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1978 const struct cfg80211_chan_def *chandef, 1979 u16 prot_mode); 1980 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1981 u32 cap); 1982 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1983 const struct ieee80211_supported_band *sband, 1984 const u8 *srates, int srates_len, u32 *rates); 1985 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1986 struct sk_buff *skb, bool need_basic, 1987 enum ieee80211_band band); 1988 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1989 struct sk_buff *skb, bool need_basic, 1990 enum ieee80211_band band); 1991 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1992 1993 /* channel management */ 1994 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1995 const struct ieee80211_ht_operation *ht_oper, 1996 struct cfg80211_chan_def *chandef); 1997 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1998 1999 int __must_check 2000 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2001 const struct cfg80211_chan_def *chandef, 2002 enum ieee80211_chanctx_mode mode); 2003 int __must_check 2004 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2005 const struct cfg80211_chan_def *chandef, 2006 enum ieee80211_chanctx_mode mode, 2007 bool radar_required); 2008 int __must_check 2009 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2010 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2011 2012 int __must_check 2013 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2014 const struct cfg80211_chan_def *chandef, 2015 u32 *changed); 2016 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2017 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2018 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2019 bool clear); 2020 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2021 struct ieee80211_chanctx *ctx); 2022 2023 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2024 struct ieee80211_chanctx *chanctx); 2025 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2026 struct ieee80211_chanctx *ctx); 2027 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2028 2029 void ieee80211_dfs_cac_timer(unsigned long data); 2030 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2031 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2032 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2033 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2034 struct cfg80211_csa_settings *csa_settings); 2035 2036 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2037 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2038 const struct ieee80211_cipher_scheme * 2039 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2040 enum nl80211_iftype iftype); 2041 int ieee80211_cs_headroom(struct ieee80211_local *local, 2042 struct cfg80211_crypto_settings *crypto, 2043 enum nl80211_iftype iftype); 2044 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2045 struct ieee80211_sub_if_data *sdata); 2046 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2047 const struct cfg80211_chan_def *chandef, 2048 enum ieee80211_chanctx_mode chanmode, 2049 u8 radar_detect); 2050 int ieee80211_max_num_channels(struct ieee80211_local *local); 2051 2052 /* TDLS */ 2053 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2054 const u8 *peer, u8 action_code, u8 dialog_token, 2055 u16 status_code, u32 peer_capability, 2056 bool initiator, const u8 *extra_ies, 2057 size_t extra_ies_len); 2058 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2059 const u8 *peer, enum nl80211_tdls_operation oper); 2060 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2061 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2062 const u8 *addr, u8 oper_class, 2063 struct cfg80211_chan_def *chandef); 2064 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2065 struct net_device *dev, 2066 const u8 *addr); 2067 void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2068 struct sk_buff *skb); 2069 2070 extern const struct ethtool_ops ieee80211_ethtool_ops; 2071 2072 #ifdef CONFIG_MAC80211_NOINLINE 2073 #define debug_noinline noinline 2074 #else 2075 #define debug_noinline 2076 #endif 2077 2078 #endif /* IEEE80211_I_H */ 2079