1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef IEEE80211_I_H 14 #define IEEE80211_I_H 15 16 #include <linux/kernel.h> 17 #include <linux/device.h> 18 #include <linux/if_ether.h> 19 #include <linux/interrupt.h> 20 #include <linux/list.h> 21 #include <linux/netdevice.h> 22 #include <linux/skbuff.h> 23 #include <linux/workqueue.h> 24 #include <linux/types.h> 25 #include <linux/spinlock.h> 26 #include <linux/etherdevice.h> 27 #include <linux/leds.h> 28 #include <linux/idr.h> 29 #include <linux/rhashtable.h> 30 #include <net/ieee80211_radiotap.h> 31 #include <net/cfg80211.h> 32 #include <net/mac80211.h> 33 #include "key.h" 34 #include "sta_info.h" 35 #include "debug.h" 36 37 struct ieee80211_local; 38 39 /* Maximum number of broadcast/multicast frames to buffer when some of the 40 * associated stations are using power saving. */ 41 #define AP_MAX_BC_BUFFER 128 42 43 /* Maximum number of frames buffered to all STAs, including multicast frames. 44 * Note: increasing this limit increases the potential memory requirement. Each 45 * frame can be up to about 2 kB long. */ 46 #define TOTAL_MAX_TX_BUFFER 512 47 48 /* Required encryption head and tailroom */ 49 #define IEEE80211_ENCRYPT_HEADROOM 8 50 #define IEEE80211_ENCRYPT_TAILROOM 18 51 52 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 53 * reception of at least three fragmented frames. This limit can be increased 54 * by changing this define, at the cost of slower frame reassembly and 55 * increased memory use (about 2 kB of RAM per entry). */ 56 #define IEEE80211_FRAGMENT_MAX 4 57 58 /* power level hasn't been configured (or set to automatic) */ 59 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 60 61 /* 62 * Some APs experience problems when working with U-APSD. Decreasing the 63 * probability of that happening by using legacy mode for all ACs but VO isn't 64 * enough. 65 * 66 * Cisco 4410N originally forced us to enable VO by default only because it 67 * treated non-VO ACs as legacy. 68 * 69 * However some APs (notably Netgear R7000) silently reclassify packets to 70 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 71 * clients would never see some frames (e.g. ARP responses) or would fetch them 72 * accidentally after a long time. 73 * 74 * It makes little sense to enable u-APSD queues by default because it needs 75 * userspace applications to be aware of it to actually take advantage of the 76 * possible additional powersavings. Implicitly depending on driver autotrigger 77 * frame support doesn't make much sense. 78 */ 79 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 80 81 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 82 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 83 84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 85 86 struct ieee80211_fragment_entry { 87 unsigned long first_frag_time; 88 unsigned int seq; 89 unsigned int rx_queue; 90 unsigned int last_frag; 91 unsigned int extra_len; 92 struct sk_buff_head skb_list; 93 int ccmp; /* Whether fragments were encrypted with CCMP */ 94 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 95 }; 96 97 98 struct ieee80211_bss { 99 u32 device_ts_beacon, device_ts_presp; 100 101 bool wmm_used; 102 bool uapsd_supported; 103 104 #define IEEE80211_MAX_SUPP_RATES 32 105 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 106 size_t supp_rates_len; 107 struct ieee80211_rate *beacon_rate; 108 109 /* 110 * During association, we save an ERP value from a probe response so 111 * that we can feed ERP info to the driver when handling the 112 * association completes. these fields probably won't be up-to-date 113 * otherwise, you probably don't want to use them. 114 */ 115 bool has_erp_value; 116 u8 erp_value; 117 118 /* Keep track of the corruption of the last beacon/probe response. */ 119 u8 corrupt_data; 120 121 /* Keep track of what bits of information we have valid info for. */ 122 u8 valid_data; 123 }; 124 125 /** 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 129 * 130 * These are bss flags that are attached to a bss in the 131 * @corrupt_data field of &struct ieee80211_bss. 132 */ 133 enum ieee80211_bss_corrupt_data_flags { 134 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 135 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 136 }; 137 138 /** 139 * enum ieee80211_valid_data_flags - BSS valid data flags 140 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 142 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 143 * 144 * These are bss flags that are attached to a bss in the 145 * @valid_data field of &struct ieee80211_bss. They show which parts 146 * of the data structure were received as a result of an un-corrupted 147 * beacon/probe response. 148 */ 149 enum ieee80211_bss_valid_data_flags { 150 IEEE80211_BSS_VALID_WMM = BIT(1), 151 IEEE80211_BSS_VALID_RATES = BIT(2), 152 IEEE80211_BSS_VALID_ERP = BIT(3) 153 }; 154 155 typedef unsigned __bitwise__ ieee80211_tx_result; 156 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 157 #define TX_DROP ((__force ieee80211_tx_result) 1u) 158 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 159 160 #define IEEE80211_TX_UNICAST BIT(1) 161 #define IEEE80211_TX_PS_BUFFERED BIT(2) 162 163 struct ieee80211_tx_data { 164 struct sk_buff *skb; 165 struct sk_buff_head skbs; 166 struct ieee80211_local *local; 167 struct ieee80211_sub_if_data *sdata; 168 struct sta_info *sta; 169 struct ieee80211_key *key; 170 struct ieee80211_tx_rate rate; 171 172 unsigned int flags; 173 }; 174 175 176 typedef unsigned __bitwise__ ieee80211_rx_result; 177 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 178 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 179 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 180 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 181 182 /** 183 * enum ieee80211_packet_rx_flags - packet RX flags 184 * @IEEE80211_RX_FRAGMENTED: fragmented frame 185 * @IEEE80211_RX_AMSDU: a-MSDU packet 186 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 187 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 188 * 189 * These are per-frame flags that are attached to a frame in the 190 * @rx_flags field of &struct ieee80211_rx_status. 191 */ 192 enum ieee80211_packet_rx_flags { 193 IEEE80211_RX_FRAGMENTED = BIT(2), 194 IEEE80211_RX_AMSDU = BIT(3), 195 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 196 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 197 }; 198 199 /** 200 * enum ieee80211_rx_flags - RX data flags 201 * 202 * @IEEE80211_RX_CMNTR: received on cooked monitor already 203 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 204 * to cfg80211_report_obss_beacon(). 205 * @IEEE80211_RX_REORDER_TIMER: this frame is released by the 206 * reorder buffer timeout timer, not the normal RX path 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 IEEE80211_RX_REORDER_TIMER = BIT(2), 215 }; 216 217 struct ieee80211_rx_data { 218 struct sk_buff *skb; 219 struct ieee80211_local *local; 220 struct ieee80211_sub_if_data *sdata; 221 struct sta_info *sta; 222 struct ieee80211_key *key; 223 224 unsigned int flags; 225 226 /* 227 * Index into sequence numbers array, 0..16 228 * since the last (16) is used for non-QoS, 229 * will be 16 on non-QoS frames. 230 */ 231 int seqno_idx; 232 233 /* 234 * Index into the security IV/PN arrays, 0..16 235 * since the last (16) is used for CCMP-encrypted 236 * management frames, will be set to 16 on mgmt 237 * frames and 0 on non-QoS frames. 238 */ 239 int security_idx; 240 241 u32 tkip_iv32; 242 u16 tkip_iv16; 243 }; 244 245 struct ieee80211_csa_settings { 246 const u16 *counter_offsets_beacon; 247 const u16 *counter_offsets_presp; 248 249 int n_counter_offsets_beacon; 250 int n_counter_offsets_presp; 251 252 u8 count; 253 }; 254 255 struct beacon_data { 256 u8 *head, *tail; 257 int head_len, tail_len; 258 struct ieee80211_meshconf_ie *meshconf; 259 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 260 u8 csa_current_counter; 261 struct rcu_head rcu_head; 262 }; 263 264 struct probe_resp { 265 struct rcu_head rcu_head; 266 int len; 267 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 268 u8 data[0]; 269 }; 270 271 struct ps_data { 272 /* yes, this looks ugly, but guarantees that we can later use 273 * bitmap_empty :) 274 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 275 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 276 __aligned(__alignof__(unsigned long)); 277 struct sk_buff_head bc_buf; 278 atomic_t num_sta_ps; /* number of stations in PS mode */ 279 int dtim_count; 280 bool dtim_bc_mc; 281 }; 282 283 struct ieee80211_if_ap { 284 struct beacon_data __rcu *beacon; 285 struct probe_resp __rcu *probe_resp; 286 287 /* to be used after channel switch. */ 288 struct cfg80211_beacon_data *next_beacon; 289 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 290 291 struct ps_data ps; 292 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 293 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 294 driver_smps_mode; /* smps mode request */ 295 296 struct work_struct request_smps_work; 297 }; 298 299 struct ieee80211_if_wds { 300 struct sta_info *sta; 301 u8 remote_addr[ETH_ALEN]; 302 }; 303 304 struct ieee80211_if_vlan { 305 struct list_head list; /* write-protected with RTNL and local->mtx */ 306 307 /* used for all tx if the VLAN is configured to 4-addr mode */ 308 struct sta_info __rcu *sta; 309 }; 310 311 struct mesh_stats { 312 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 313 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 314 __u32 fwded_frames; /* Mesh total forwarded frames */ 315 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 316 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 317 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 318 }; 319 320 #define PREQ_Q_F_START 0x1 321 #define PREQ_Q_F_REFRESH 0x2 322 struct mesh_preq_queue { 323 struct list_head list; 324 u8 dst[ETH_ALEN]; 325 u8 flags; 326 }; 327 328 struct ieee80211_roc_work { 329 struct list_head list; 330 struct list_head dependents; 331 332 struct delayed_work work; 333 334 struct ieee80211_sub_if_data *sdata; 335 336 struct ieee80211_channel *chan; 337 338 bool started, abort, hw_begun, notified; 339 bool to_be_freed; 340 bool on_channel; 341 342 unsigned long hw_start_time; 343 344 u32 duration, req_duration; 345 struct sk_buff *frame; 346 u64 cookie, mgmt_tx_cookie; 347 enum ieee80211_roc_type type; 348 }; 349 350 /* flags used in struct ieee80211_if_managed.flags */ 351 enum ieee80211_sta_flags { 352 IEEE80211_STA_CONNECTION_POLL = BIT(1), 353 IEEE80211_STA_CONTROL_PORT = BIT(2), 354 IEEE80211_STA_DISABLE_HT = BIT(4), 355 IEEE80211_STA_MFP_ENABLED = BIT(6), 356 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 357 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 358 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 359 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 360 IEEE80211_STA_DISABLE_VHT = BIT(11), 361 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 362 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 363 IEEE80211_STA_DISABLE_WMM = BIT(14), 364 IEEE80211_STA_ENABLE_RRM = BIT(15), 365 }; 366 367 struct ieee80211_mgd_auth_data { 368 struct cfg80211_bss *bss; 369 unsigned long timeout; 370 int tries; 371 u16 algorithm, expected_transaction; 372 373 u8 key[WLAN_KEY_LEN_WEP104]; 374 u8 key_len, key_idx; 375 bool done; 376 bool timeout_started; 377 378 u16 sae_trans, sae_status; 379 size_t data_len; 380 u8 data[]; 381 }; 382 383 struct ieee80211_mgd_assoc_data { 384 struct cfg80211_bss *bss; 385 const u8 *supp_rates; 386 387 unsigned long timeout; 388 int tries; 389 390 u16 capability; 391 u8 prev_bssid[ETH_ALEN]; 392 u8 ssid[IEEE80211_MAX_SSID_LEN]; 393 u8 ssid_len; 394 u8 supp_rates_len; 395 bool wmm, uapsd; 396 bool need_beacon; 397 bool synced; 398 bool timeout_started; 399 400 u8 ap_ht_param; 401 402 struct ieee80211_vht_cap ap_vht_cap; 403 404 size_t ie_len; 405 u8 ie[]; 406 }; 407 408 struct ieee80211_sta_tx_tspec { 409 /* timestamp of the first packet in the time slice */ 410 unsigned long time_slice_start; 411 412 u32 admitted_time; /* in usecs, unlike over the air */ 413 u8 tsid; 414 s8 up; /* signed to be able to invalidate with -1 during teardown */ 415 416 /* consumed TX time in microseconds in the time slice */ 417 u32 consumed_tx_time; 418 enum { 419 TX_TSPEC_ACTION_NONE = 0, 420 TX_TSPEC_ACTION_DOWNGRADE, 421 TX_TSPEC_ACTION_STOP_DOWNGRADE, 422 } action; 423 bool downgraded; 424 }; 425 426 struct ieee80211_if_managed { 427 struct timer_list timer; 428 struct timer_list conn_mon_timer; 429 struct timer_list bcn_mon_timer; 430 struct timer_list chswitch_timer; 431 struct work_struct monitor_work; 432 struct work_struct chswitch_work; 433 struct work_struct beacon_connection_loss_work; 434 struct work_struct csa_connection_drop_work; 435 436 unsigned long beacon_timeout; 437 unsigned long probe_timeout; 438 int probe_send_count; 439 bool nullfunc_failed; 440 bool connection_loss; 441 442 struct cfg80211_bss *associated; 443 struct ieee80211_mgd_auth_data *auth_data; 444 struct ieee80211_mgd_assoc_data *assoc_data; 445 446 u8 bssid[ETH_ALEN]; 447 448 u16 aid; 449 450 bool powersave; /* powersave requested for this iface */ 451 bool broken_ap; /* AP is broken -- turn off powersave */ 452 bool have_beacon; 453 u8 dtim_period; 454 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 455 driver_smps_mode; /* smps mode request */ 456 457 struct work_struct request_smps_work; 458 459 unsigned int flags; 460 461 bool csa_waiting_bcn; 462 bool csa_ignored_same_chan; 463 464 bool beacon_crc_valid; 465 u32 beacon_crc; 466 467 bool status_acked; 468 bool status_received; 469 __le16 status_fc; 470 471 enum { 472 IEEE80211_MFP_DISABLED, 473 IEEE80211_MFP_OPTIONAL, 474 IEEE80211_MFP_REQUIRED 475 } mfp; /* management frame protection */ 476 477 /* 478 * Bitmask of enabled u-apsd queues, 479 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 480 * to take effect. 481 */ 482 unsigned int uapsd_queues; 483 484 /* 485 * Maximum number of buffered frames AP can deliver during a 486 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 487 * Needs a new association to take effect. 488 */ 489 unsigned int uapsd_max_sp_len; 490 491 int wmm_last_param_set; 492 493 u8 use_4addr; 494 495 s16 p2p_noa_index; 496 497 /* Signal strength from the last Beacon frame in the current BSS. */ 498 int last_beacon_signal; 499 500 /* 501 * Weighted average of the signal strength from Beacon frames in the 502 * current BSS. This is in units of 1/16 of the signal unit to maintain 503 * accuracy and to speed up calculations, i.e., the value need to be 504 * divided by 16 to get the actual value. 505 */ 506 int ave_beacon_signal; 507 508 /* 509 * Number of Beacon frames used in ave_beacon_signal. This can be used 510 * to avoid generating less reliable cqm events that would be based 511 * only on couple of received frames. 512 */ 513 unsigned int count_beacon_signal; 514 515 /* 516 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 517 * that triggered a cqm event. 0 indicates that no event has been 518 * generated for the current association. 519 */ 520 int last_cqm_event_signal; 521 522 /* 523 * State variables for keeping track of RSSI of the AP currently 524 * connected to and informing driver when RSSI has gone 525 * below/above a certain threshold. 526 */ 527 int rssi_min_thold, rssi_max_thold; 528 int last_ave_beacon_signal; 529 530 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 531 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 532 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 533 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 534 535 /* TDLS support */ 536 u8 tdls_peer[ETH_ALEN] __aligned(2); 537 struct delayed_work tdls_peer_del_work; 538 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 539 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 540 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 541 bool tdls_chan_switch_prohibited; 542 543 /* WMM-AC TSPEC support */ 544 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 545 /* Use a separate work struct so that we can do something here 546 * while the sdata->work is flushing the queues, for example. 547 * otherwise, in scenarios where we hardly get any traffic out 548 * on the BE queue, but there's a lot of VO traffic, we might 549 * get stuck in a downgraded situation and flush takes forever. 550 */ 551 struct delayed_work tx_tspec_wk; 552 }; 553 554 struct ieee80211_if_ibss { 555 struct timer_list timer; 556 struct work_struct csa_connection_drop_work; 557 558 unsigned long last_scan_completed; 559 560 u32 basic_rates; 561 562 bool fixed_bssid; 563 bool fixed_channel; 564 bool privacy; 565 566 bool control_port; 567 bool userspace_handles_dfs; 568 569 u8 bssid[ETH_ALEN] __aligned(2); 570 u8 ssid[IEEE80211_MAX_SSID_LEN]; 571 u8 ssid_len, ie_len; 572 u8 *ie; 573 struct cfg80211_chan_def chandef; 574 575 unsigned long ibss_join_req; 576 /* probe response/beacon for IBSS */ 577 struct beacon_data __rcu *presp; 578 579 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 580 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 581 582 spinlock_t incomplete_lock; 583 struct list_head incomplete_stations; 584 585 enum { 586 IEEE80211_IBSS_MLME_SEARCH, 587 IEEE80211_IBSS_MLME_JOINED, 588 } state; 589 }; 590 591 /** 592 * struct ieee80211_if_ocb - OCB mode state 593 * 594 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 595 * @wrkq_flags: OCB deferred task action 596 * @incomplete_lock: delayed STA insertion lock 597 * @incomplete_stations: list of STAs waiting for delayed insertion 598 * @joined: indication if the interface is connected to an OCB network 599 */ 600 struct ieee80211_if_ocb { 601 struct timer_list housekeeping_timer; 602 unsigned long wrkq_flags; 603 604 spinlock_t incomplete_lock; 605 struct list_head incomplete_stations; 606 607 bool joined; 608 }; 609 610 /** 611 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 612 * 613 * these declarations define the interface, which enables 614 * vendor-specific mesh synchronization 615 * 616 */ 617 struct ieee802_11_elems; 618 struct ieee80211_mesh_sync_ops { 619 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 620 u16 stype, 621 struct ieee80211_mgmt *mgmt, 622 struct ieee802_11_elems *elems, 623 struct ieee80211_rx_status *rx_status); 624 625 /* should be called with beacon_data under RCU read lock */ 626 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 627 struct beacon_data *beacon); 628 /* add other framework functions here */ 629 }; 630 631 struct mesh_csa_settings { 632 struct rcu_head rcu_head; 633 struct cfg80211_csa_settings settings; 634 }; 635 636 struct ieee80211_if_mesh { 637 struct timer_list housekeeping_timer; 638 struct timer_list mesh_path_timer; 639 struct timer_list mesh_path_root_timer; 640 641 unsigned long wrkq_flags; 642 unsigned long mbss_changed; 643 644 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 645 size_t mesh_id_len; 646 /* Active Path Selection Protocol Identifier */ 647 u8 mesh_pp_id; 648 /* Active Path Selection Metric Identifier */ 649 u8 mesh_pm_id; 650 /* Congestion Control Mode Identifier */ 651 u8 mesh_cc_id; 652 /* Synchronization Protocol Identifier */ 653 u8 mesh_sp_id; 654 /* Authentication Protocol Identifier */ 655 u8 mesh_auth_id; 656 /* Local mesh Sequence Number */ 657 u32 sn; 658 /* Last used PREQ ID */ 659 u32 preq_id; 660 atomic_t mpaths; 661 /* Timestamp of last SN update */ 662 unsigned long last_sn_update; 663 /* Time when it's ok to send next PERR */ 664 unsigned long next_perr; 665 /* Timestamp of last PREQ sent */ 666 unsigned long last_preq; 667 struct mesh_rmc *rmc; 668 spinlock_t mesh_preq_queue_lock; 669 struct mesh_preq_queue preq_queue; 670 int preq_queue_len; 671 struct mesh_stats mshstats; 672 struct mesh_config mshcfg; 673 atomic_t estab_plinks; 674 u32 mesh_seqnum; 675 bool accepting_plinks; 676 int num_gates; 677 struct beacon_data __rcu *beacon; 678 const u8 *ie; 679 u8 ie_len; 680 enum { 681 IEEE80211_MESH_SEC_NONE = 0x0, 682 IEEE80211_MESH_SEC_AUTHED = 0x1, 683 IEEE80211_MESH_SEC_SECURED = 0x2, 684 } security; 685 bool user_mpm; 686 /* Extensible Synchronization Framework */ 687 const struct ieee80211_mesh_sync_ops *sync_ops; 688 s64 sync_offset_clockdrift_max; 689 spinlock_t sync_offset_lock; 690 bool adjusting_tbtt; 691 /* mesh power save */ 692 enum nl80211_mesh_power_mode nonpeer_pm; 693 int ps_peers_light_sleep; 694 int ps_peers_deep_sleep; 695 struct ps_data ps; 696 /* Channel Switching Support */ 697 struct mesh_csa_settings __rcu *csa; 698 enum { 699 IEEE80211_MESH_CSA_ROLE_NONE, 700 IEEE80211_MESH_CSA_ROLE_INIT, 701 IEEE80211_MESH_CSA_ROLE_REPEATER, 702 } csa_role; 703 u8 chsw_ttl; 704 u16 pre_value; 705 706 /* offset from skb->data while building IE */ 707 int meshconf_offset; 708 }; 709 710 #ifdef CONFIG_MAC80211_MESH 711 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 712 do { (msh)->mshstats.name++; } while (0) 713 #else 714 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 715 do { } while (0) 716 #endif 717 718 /** 719 * enum ieee80211_sub_if_data_flags - virtual interface flags 720 * 721 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 722 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 723 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 724 * associated stations and deliver multicast frames both 725 * back to wireless media and to the local net stack. 726 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 727 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 728 */ 729 enum ieee80211_sub_if_data_flags { 730 IEEE80211_SDATA_ALLMULTI = BIT(0), 731 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 732 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 733 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 734 IEEE80211_SDATA_IN_DRIVER = BIT(5), 735 }; 736 737 /** 738 * enum ieee80211_sdata_state_bits - virtual interface state bits 739 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 740 * mirrors netif_running() but is separate for interface type 741 * change handling while the interface is up 742 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 743 * mode, so queues are stopped 744 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 745 * to offchannel, reset when offchannel returns 746 */ 747 enum ieee80211_sdata_state_bits { 748 SDATA_STATE_RUNNING, 749 SDATA_STATE_OFFCHANNEL, 750 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 751 }; 752 753 /** 754 * enum ieee80211_chanctx_mode - channel context configuration mode 755 * 756 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 757 * multiple interfaces 758 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 759 * only by a single interface. This can be used for example for 760 * non-fixed channel IBSS. 761 */ 762 enum ieee80211_chanctx_mode { 763 IEEE80211_CHANCTX_SHARED, 764 IEEE80211_CHANCTX_EXCLUSIVE 765 }; 766 767 /** 768 * enum ieee80211_chanctx_replace_state - channel context replacement state 769 * 770 * This is used for channel context in-place reservations that require channel 771 * context switch/swap. 772 * 773 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 774 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 775 * by a (not yet registered) channel context pointed by %replace_ctx. 776 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 777 * replaces an existing channel context pointed to by %replace_ctx. 778 */ 779 enum ieee80211_chanctx_replace_state { 780 IEEE80211_CHANCTX_REPLACE_NONE, 781 IEEE80211_CHANCTX_WILL_BE_REPLACED, 782 IEEE80211_CHANCTX_REPLACES_OTHER, 783 }; 784 785 struct ieee80211_chanctx { 786 struct list_head list; 787 struct rcu_head rcu_head; 788 789 struct list_head assigned_vifs; 790 struct list_head reserved_vifs; 791 792 enum ieee80211_chanctx_replace_state replace_state; 793 struct ieee80211_chanctx *replace_ctx; 794 795 enum ieee80211_chanctx_mode mode; 796 bool driver_present; 797 798 struct ieee80211_chanctx_conf conf; 799 }; 800 801 struct mac80211_qos_map { 802 struct cfg80211_qos_map qos_map; 803 struct rcu_head rcu_head; 804 }; 805 806 enum txq_info_flags { 807 IEEE80211_TXQ_STOP, 808 IEEE80211_TXQ_AMPDU, 809 }; 810 811 struct txq_info { 812 struct sk_buff_head queue; 813 unsigned long flags; 814 815 /* keep last! */ 816 struct ieee80211_txq txq; 817 }; 818 819 struct ieee80211_sub_if_data { 820 struct list_head list; 821 822 struct wireless_dev wdev; 823 824 /* keys */ 825 struct list_head key_list; 826 827 /* count for keys needing tailroom space allocation */ 828 int crypto_tx_tailroom_needed_cnt; 829 int crypto_tx_tailroom_pending_dec; 830 struct delayed_work dec_tailroom_needed_wk; 831 832 struct net_device *dev; 833 struct ieee80211_local *local; 834 835 unsigned int flags; 836 837 unsigned long state; 838 839 char name[IFNAMSIZ]; 840 841 /* Fragment table for host-based reassembly */ 842 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 843 unsigned int fragment_next; 844 845 /* TID bitmap for NoAck policy */ 846 u16 noack_map; 847 848 /* bit field of ACM bits (BIT(802.1D tag)) */ 849 u8 wmm_acm; 850 851 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 852 struct ieee80211_key __rcu *default_unicast_key; 853 struct ieee80211_key __rcu *default_multicast_key; 854 struct ieee80211_key __rcu *default_mgmt_key; 855 856 u16 sequence_number; 857 __be16 control_port_protocol; 858 bool control_port_no_encrypt; 859 int encrypt_headroom; 860 861 atomic_t txqs_len[IEEE80211_NUM_ACS]; 862 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 863 struct mac80211_qos_map __rcu *qos_map; 864 865 struct work_struct csa_finalize_work; 866 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 867 struct cfg80211_chan_def csa_chandef; 868 869 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 870 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 871 872 /* context reservation -- protected with chanctx_mtx */ 873 struct ieee80211_chanctx *reserved_chanctx; 874 struct cfg80211_chan_def reserved_chandef; 875 bool reserved_radar_required; 876 bool reserved_ready; 877 878 /* used to reconfigure hardware SM PS */ 879 struct work_struct recalc_smps; 880 881 struct work_struct work; 882 struct sk_buff_head skb_queue; 883 884 u8 needed_rx_chains; 885 enum ieee80211_smps_mode smps_mode; 886 887 int user_power_level; /* in dBm */ 888 int ap_power_level; /* in dBm */ 889 890 bool radar_required; 891 struct delayed_work dfs_cac_timer_work; 892 893 /* 894 * AP this belongs to: self in AP mode and 895 * corresponding AP in VLAN mode, NULL for 896 * all others (might be needed later in IBSS) 897 */ 898 struct ieee80211_if_ap *bss; 899 900 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 901 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 902 903 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 904 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 905 906 union { 907 struct ieee80211_if_ap ap; 908 struct ieee80211_if_wds wds; 909 struct ieee80211_if_vlan vlan; 910 struct ieee80211_if_managed mgd; 911 struct ieee80211_if_ibss ibss; 912 struct ieee80211_if_mesh mesh; 913 struct ieee80211_if_ocb ocb; 914 u32 mntr_flags; 915 } u; 916 917 #ifdef CONFIG_MAC80211_DEBUGFS 918 struct { 919 struct dentry *subdir_stations; 920 struct dentry *default_unicast_key; 921 struct dentry *default_multicast_key; 922 struct dentry *default_mgmt_key; 923 } debugfs; 924 #endif 925 926 /* must be last, dynamically sized area in this! */ 927 struct ieee80211_vif vif; 928 }; 929 930 static inline 931 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 932 { 933 return container_of(p, struct ieee80211_sub_if_data, vif); 934 } 935 936 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 937 __acquires(&sdata->wdev.mtx) 938 { 939 mutex_lock(&sdata->wdev.mtx); 940 __acquire(&sdata->wdev.mtx); 941 } 942 943 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 944 __releases(&sdata->wdev.mtx) 945 { 946 mutex_unlock(&sdata->wdev.mtx); 947 __release(&sdata->wdev.mtx); 948 } 949 950 #define sdata_dereference(p, sdata) \ 951 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 952 953 static inline void 954 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 955 { 956 lockdep_assert_held(&sdata->wdev.mtx); 957 } 958 959 static inline enum ieee80211_band 960 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 961 { 962 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 963 struct ieee80211_chanctx_conf *chanctx_conf; 964 965 rcu_read_lock(); 966 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 967 if (!WARN_ON(!chanctx_conf)) 968 band = chanctx_conf->def.chan->band; 969 rcu_read_unlock(); 970 971 return band; 972 } 973 974 static inline int 975 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 976 { 977 switch (chandef->width) { 978 case NL80211_CHAN_WIDTH_5: 979 return 2; 980 case NL80211_CHAN_WIDTH_10: 981 return 1; 982 default: 983 return 0; 984 } 985 } 986 987 static inline int 988 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 989 { 990 struct ieee80211_chanctx_conf *chanctx_conf; 991 int shift = 0; 992 993 rcu_read_lock(); 994 chanctx_conf = rcu_dereference(vif->chanctx_conf); 995 if (chanctx_conf) 996 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 997 rcu_read_unlock(); 998 999 return shift; 1000 } 1001 1002 struct ieee80211_rx_agg { 1003 u8 addr[ETH_ALEN]; 1004 u16 tid; 1005 }; 1006 1007 enum sdata_queue_type { 1008 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 1009 IEEE80211_SDATA_QUEUE_AGG_START = 1, 1010 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 1011 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 1012 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 1013 IEEE80211_SDATA_QUEUE_TDLS_CHSW = 5, 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 rx_handlers_drop_short; 1290 unsigned int tx_expand_skb_head; 1291 unsigned int tx_expand_skb_head_cloned; 1292 unsigned int rx_expand_skb_head_defrag; 1293 unsigned int rx_handlers_fragments; 1294 unsigned int tx_status_drop; 1295 #define I802_DEBUG_INC(c) (c)++ 1296 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1297 #define I802_DEBUG_INC(c) do { } while (0) 1298 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1299 1300 1301 int total_ps_buffered; /* total number of all buffered unicast and 1302 * multicast packets for power saving stations 1303 */ 1304 1305 bool pspolling; 1306 bool offchannel_ps_enabled; 1307 /* 1308 * PS can only be enabled when we have exactly one managed 1309 * interface (and monitors) in PS, this then points there. 1310 */ 1311 struct ieee80211_sub_if_data *ps_sdata; 1312 struct work_struct dynamic_ps_enable_work; 1313 struct work_struct dynamic_ps_disable_work; 1314 struct timer_list dynamic_ps_timer; 1315 struct notifier_block network_latency_notifier; 1316 struct notifier_block ifa_notifier; 1317 struct notifier_block ifa6_notifier; 1318 1319 /* 1320 * The dynamic ps timeout configured from user space via WEXT - 1321 * this will override whatever chosen by mac80211 internally. 1322 */ 1323 int dynamic_ps_forced_timeout; 1324 1325 int user_power_level; /* in dBm, for all interfaces */ 1326 1327 enum ieee80211_smps_mode smps_mode; 1328 1329 struct work_struct restart_work; 1330 1331 #ifdef CONFIG_MAC80211_DEBUGFS 1332 struct local_debugfsdentries { 1333 struct dentry *rcdir; 1334 struct dentry *keys; 1335 } debugfs; 1336 #endif 1337 1338 /* 1339 * Remain-on-channel support 1340 */ 1341 struct list_head roc_list; 1342 struct work_struct hw_roc_start, hw_roc_done; 1343 unsigned long hw_roc_start_time; 1344 u64 roc_cookie_counter; 1345 1346 struct idr ack_status_frames; 1347 spinlock_t ack_status_lock; 1348 1349 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1350 1351 struct napi_struct *napi; 1352 1353 /* virtual monitor interface */ 1354 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1355 struct cfg80211_chan_def monitor_chandef; 1356 1357 /* extended capabilities provided by mac80211 */ 1358 u8 ext_capa[8]; 1359 }; 1360 1361 static inline struct ieee80211_sub_if_data * 1362 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1363 { 1364 return netdev_priv(dev); 1365 } 1366 1367 static inline struct ieee80211_sub_if_data * 1368 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1369 { 1370 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1371 } 1372 1373 /* this struct represents 802.11n's RA/TID combination */ 1374 struct ieee80211_ra_tid { 1375 u8 ra[ETH_ALEN]; 1376 u16 tid; 1377 }; 1378 1379 /* this struct holds the value parsing from channel switch IE */ 1380 struct ieee80211_csa_ie { 1381 struct cfg80211_chan_def chandef; 1382 u8 mode; 1383 u8 count; 1384 u8 ttl; 1385 u16 pre_value; 1386 }; 1387 1388 /* Parsed Information Elements */ 1389 struct ieee802_11_elems { 1390 const u8 *ie_start; 1391 size_t total_len; 1392 1393 /* pointers to IEs */ 1394 const struct ieee80211_tdls_lnkie *lnk_id; 1395 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1396 const u8 *ext_capab; 1397 const u8 *ssid; 1398 const u8 *supp_rates; 1399 const u8 *ds_params; 1400 const struct ieee80211_tim_ie *tim; 1401 const u8 *challenge; 1402 const u8 *rsn; 1403 const u8 *erp_info; 1404 const u8 *ext_supp_rates; 1405 const u8 *wmm_info; 1406 const u8 *wmm_param; 1407 const struct ieee80211_ht_cap *ht_cap_elem; 1408 const struct ieee80211_ht_operation *ht_operation; 1409 const struct ieee80211_vht_cap *vht_cap_elem; 1410 const struct ieee80211_vht_operation *vht_operation; 1411 const struct ieee80211_meshconf_ie *mesh_config; 1412 const u8 *mesh_id; 1413 const u8 *peering; 1414 const __le16 *awake_window; 1415 const u8 *preq; 1416 const u8 *prep; 1417 const u8 *perr; 1418 const struct ieee80211_rann_ie *rann; 1419 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1420 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1421 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1422 const u8 *country_elem; 1423 const u8 *pwr_constr_elem; 1424 const u8 *cisco_dtpc_elem; 1425 const struct ieee80211_timeout_interval_ie *timeout_int; 1426 const u8 *opmode_notif; 1427 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1428 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1429 1430 /* length of them, respectively */ 1431 u8 ext_capab_len; 1432 u8 ssid_len; 1433 u8 supp_rates_len; 1434 u8 tim_len; 1435 u8 challenge_len; 1436 u8 rsn_len; 1437 u8 ext_supp_rates_len; 1438 u8 wmm_info_len; 1439 u8 wmm_param_len; 1440 u8 mesh_id_len; 1441 u8 peering_len; 1442 u8 preq_len; 1443 u8 prep_len; 1444 u8 perr_len; 1445 u8 country_elem_len; 1446 1447 /* whether a parse error occurred while retrieving these elements */ 1448 bool parse_error; 1449 }; 1450 1451 static inline struct ieee80211_local *hw_to_local( 1452 struct ieee80211_hw *hw) 1453 { 1454 return container_of(hw, struct ieee80211_local, hw); 1455 } 1456 1457 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1458 { 1459 return container_of(txq, struct txq_info, txq); 1460 } 1461 1462 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1463 { 1464 return ether_addr_equal(raddr, addr) || 1465 is_broadcast_ether_addr(raddr); 1466 } 1467 1468 static inline bool 1469 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1470 { 1471 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1472 status->flag & RX_FLAG_MACTIME_END); 1473 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1474 } 1475 1476 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1477 struct ieee80211_rx_status *status, 1478 unsigned int mpdu_len, 1479 unsigned int mpdu_offset); 1480 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1481 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1482 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1483 u32 changed); 1484 void ieee80211_configure_filter(struct ieee80211_local *local); 1485 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1486 1487 /* STA code */ 1488 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1489 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1490 struct cfg80211_auth_request *req); 1491 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1492 struct cfg80211_assoc_request *req); 1493 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1494 struct cfg80211_deauth_request *req); 1495 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1496 struct cfg80211_disassoc_request *req); 1497 void ieee80211_send_pspoll(struct ieee80211_local *local, 1498 struct ieee80211_sub_if_data *sdata); 1499 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1500 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1501 int ieee80211_max_network_latency(struct notifier_block *nb, 1502 unsigned long data, void *dummy); 1503 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1504 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1505 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1506 struct sk_buff *skb); 1507 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1508 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1509 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1510 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1511 __le16 fc, bool acked); 1512 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1513 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1514 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1515 1516 /* IBSS code */ 1517 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1518 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1519 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1520 const u8 *bssid, const u8 *addr, u32 supp_rates); 1521 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1522 struct cfg80211_ibss_params *params); 1523 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1524 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1525 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1526 struct sk_buff *skb); 1527 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1528 struct cfg80211_csa_settings *csa_settings); 1529 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1530 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1531 1532 /* OCB code */ 1533 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1534 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1535 const u8 *bssid, const u8 *addr, u32 supp_rates); 1536 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1537 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1538 struct ocb_setup *setup); 1539 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1540 1541 /* mesh code */ 1542 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1543 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1544 struct sk_buff *skb); 1545 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1546 struct cfg80211_csa_settings *csa_settings); 1547 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1548 1549 /* scan/BSS handling */ 1550 void ieee80211_scan_work(struct work_struct *work); 1551 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1552 const u8 *ssid, u8 ssid_len, 1553 struct ieee80211_channel **channels, 1554 unsigned int n_channels, 1555 enum nl80211_bss_scan_width scan_width); 1556 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1557 struct cfg80211_scan_request *req); 1558 void ieee80211_scan_cancel(struct ieee80211_local *local); 1559 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1560 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1561 1562 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1563 struct ieee80211_bss * 1564 ieee80211_bss_info_update(struct ieee80211_local *local, 1565 struct ieee80211_rx_status *rx_status, 1566 struct ieee80211_mgmt *mgmt, 1567 size_t len, 1568 struct ieee802_11_elems *elems, 1569 struct ieee80211_channel *channel); 1570 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1571 struct ieee80211_bss *bss); 1572 1573 /* scheduled scan handling */ 1574 int 1575 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1576 struct cfg80211_sched_scan_request *req); 1577 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1578 struct cfg80211_sched_scan_request *req); 1579 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1580 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1581 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1582 1583 /* off-channel helpers */ 1584 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1585 void ieee80211_offchannel_return(struct ieee80211_local *local); 1586 void ieee80211_roc_setup(struct ieee80211_local *local); 1587 void ieee80211_start_next_roc(struct ieee80211_local *local); 1588 void ieee80211_roc_purge(struct ieee80211_local *local, 1589 struct ieee80211_sub_if_data *sdata); 1590 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1591 void ieee80211_sw_roc_work(struct work_struct *work); 1592 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1593 1594 /* channel switch handling */ 1595 void ieee80211_csa_finalize_work(struct work_struct *work); 1596 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1597 struct cfg80211_csa_settings *params); 1598 1599 /* interface handling */ 1600 int ieee80211_iface_init(void); 1601 void ieee80211_iface_exit(void); 1602 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1603 unsigned char name_assign_type, 1604 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1605 struct vif_params *params); 1606 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1607 enum nl80211_iftype type); 1608 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1609 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1610 u32 ieee80211_idle_off(struct ieee80211_local *local); 1611 void ieee80211_recalc_idle(struct ieee80211_local *local); 1612 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1613 const int offset); 1614 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1615 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1616 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1617 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1618 1619 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1620 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1621 bool update_bss); 1622 1623 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1624 { 1625 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1626 } 1627 1628 /* tx handling */ 1629 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1630 void ieee80211_tx_pending(unsigned long data); 1631 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1632 struct net_device *dev); 1633 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1634 struct net_device *dev); 1635 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1636 struct net_device *dev, 1637 u32 info_flags); 1638 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1639 struct sk_buff_head *skbs); 1640 struct sk_buff * 1641 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1642 struct sk_buff *skb, u32 info_flags); 1643 1644 void ieee80211_check_fast_xmit(struct sta_info *sta); 1645 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1646 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1647 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1648 1649 /* HT */ 1650 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1651 struct ieee80211_sta_ht_cap *ht_cap); 1652 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1653 struct ieee80211_supported_band *sband, 1654 const struct ieee80211_ht_cap *ht_cap_ie, 1655 struct sta_info *sta); 1656 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1657 const u8 *da, u16 tid, 1658 u16 initiator, u16 reason_code); 1659 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1660 enum ieee80211_smps_mode smps, const u8 *da, 1661 const u8 *bssid); 1662 void ieee80211_request_smps_ap_work(struct work_struct *work); 1663 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1664 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1665 enum ieee80211_smps_mode smps_mode_new); 1666 1667 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1668 u16 initiator, u16 reason, bool stop); 1669 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1670 u16 initiator, u16 reason, bool stop); 1671 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1672 u8 dialog_token, u16 timeout, 1673 u16 start_seq_num, u16 ba_policy, u16 tid, 1674 u16 buf_size, bool tx, bool auto_seq); 1675 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1676 enum ieee80211_agg_stop_reason reason); 1677 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1678 struct sta_info *sta, 1679 struct ieee80211_mgmt *mgmt, size_t len); 1680 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1681 struct sta_info *sta, 1682 struct ieee80211_mgmt *mgmt, 1683 size_t len); 1684 void ieee80211_process_addba_request(struct ieee80211_local *local, 1685 struct sta_info *sta, 1686 struct ieee80211_mgmt *mgmt, 1687 size_t len); 1688 1689 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1690 enum ieee80211_agg_stop_reason reason); 1691 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1692 enum ieee80211_agg_stop_reason reason); 1693 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1694 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1695 void ieee80211_ba_session_work(struct work_struct *work); 1696 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1697 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1698 1699 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1700 1701 /* VHT */ 1702 void 1703 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1704 struct ieee80211_supported_band *sband, 1705 const struct ieee80211_vht_cap *vht_cap_ie, 1706 struct sta_info *sta); 1707 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1708 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1709 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1710 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1711 struct sta_info *sta, u8 opmode, 1712 enum ieee80211_band band, bool nss_only); 1713 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1714 struct sta_info *sta, u8 opmode, 1715 enum ieee80211_band band, bool nss_only); 1716 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1717 struct ieee80211_sta_vht_cap *vht_cap); 1718 1719 /* Spectrum management */ 1720 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1721 struct ieee80211_mgmt *mgmt, 1722 size_t len); 1723 /** 1724 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1725 * @sdata: the sdata of the interface which has received the frame 1726 * @elems: parsed 802.11 elements received with the frame 1727 * @current_band: indicates the current band 1728 * @sta_flags: contains information about own capabilities and restrictions 1729 * to decide which channel switch announcements can be accepted. Only the 1730 * following subset of &enum ieee80211_sta_flags are evaluated: 1731 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1732 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1733 * %IEEE80211_STA_DISABLE_160MHZ. 1734 * @bssid: the currently connected bssid (for reporting) 1735 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1736 All of them will be filled with if success only. 1737 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1738 */ 1739 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1740 struct ieee802_11_elems *elems, 1741 enum ieee80211_band current_band, 1742 u32 sta_flags, u8 *bssid, 1743 struct ieee80211_csa_ie *csa_ie); 1744 1745 /* Suspend/resume and hw reconfiguration */ 1746 int ieee80211_reconfig(struct ieee80211_local *local); 1747 void ieee80211_stop_device(struct ieee80211_local *local); 1748 1749 int __ieee80211_suspend(struct ieee80211_hw *hw, 1750 struct cfg80211_wowlan *wowlan); 1751 1752 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1753 { 1754 struct ieee80211_local *local = hw_to_local(hw); 1755 1756 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1757 !test_bit(SCAN_COMPLETED, &local->scanning), 1758 "%s: resume with hardware scan still in progress\n", 1759 wiphy_name(hw->wiphy)); 1760 1761 return ieee80211_reconfig(hw_to_local(hw)); 1762 } 1763 1764 /* utility functions/constants */ 1765 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1766 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1767 enum nl80211_iftype type); 1768 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1769 int rate, int erp, int short_preamble, 1770 int shift); 1771 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1772 struct ieee80211_hdr *hdr, const u8 *tsc, 1773 gfp_t gfp); 1774 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1775 bool bss_notify); 1776 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1777 struct sta_info *sta, struct sk_buff *skb); 1778 1779 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1780 struct sk_buff *skb, int tid, 1781 enum ieee80211_band band); 1782 1783 static inline void 1784 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1785 struct sk_buff *skb, int tid, 1786 enum ieee80211_band band) 1787 { 1788 rcu_read_lock(); 1789 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1790 rcu_read_unlock(); 1791 } 1792 1793 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1794 struct sk_buff *skb, int tid) 1795 { 1796 struct ieee80211_chanctx_conf *chanctx_conf; 1797 1798 rcu_read_lock(); 1799 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1800 if (WARN_ON(!chanctx_conf)) { 1801 rcu_read_unlock(); 1802 kfree_skb(skb); 1803 return; 1804 } 1805 1806 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1807 chanctx_conf->def.chan->band); 1808 rcu_read_unlock(); 1809 } 1810 1811 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1812 struct sk_buff *skb) 1813 { 1814 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1815 ieee80211_tx_skb_tid(sdata, skb, 7); 1816 } 1817 1818 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1819 struct ieee802_11_elems *elems, 1820 u64 filter, u32 crc); 1821 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1822 bool action, 1823 struct ieee802_11_elems *elems) 1824 { 1825 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1826 } 1827 1828 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1829 { 1830 struct sk_buff *tail = skb_peek_tail(frames); 1831 struct ieee80211_rx_status *status; 1832 1833 if (!tail) 1834 return false; 1835 1836 status = IEEE80211_SKB_RXCB(tail); 1837 if (status->flag & RX_FLAG_AMSDU_MORE) 1838 return false; 1839 1840 return true; 1841 } 1842 1843 extern const int ieee802_1d_to_ac[8]; 1844 1845 static inline int ieee80211_ac_from_tid(int tid) 1846 { 1847 return ieee802_1d_to_ac[tid & 7]; 1848 } 1849 1850 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1851 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1852 void ieee80211_dynamic_ps_timer(unsigned long data); 1853 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1854 struct ieee80211_sub_if_data *sdata, 1855 int powersave); 1856 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1857 struct ieee80211_hdr *hdr); 1858 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1859 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1860 1861 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1862 unsigned long queues, 1863 enum queue_stop_reason reason, 1864 bool refcounted); 1865 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1866 struct ieee80211_sub_if_data *sdata, 1867 enum queue_stop_reason reason); 1868 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1869 struct ieee80211_sub_if_data *sdata, 1870 enum queue_stop_reason reason); 1871 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1872 unsigned long queues, 1873 enum queue_stop_reason reason, 1874 bool refcounted); 1875 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1876 enum queue_stop_reason reason, 1877 bool refcounted); 1878 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1879 enum queue_stop_reason reason, 1880 bool refcounted); 1881 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1882 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1883 struct sk_buff *skb); 1884 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1885 struct sk_buff_head *skbs); 1886 void ieee80211_flush_queues(struct ieee80211_local *local, 1887 struct ieee80211_sub_if_data *sdata, bool drop); 1888 void __ieee80211_flush_queues(struct ieee80211_local *local, 1889 struct ieee80211_sub_if_data *sdata, 1890 unsigned int queues, bool drop); 1891 1892 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 1893 { 1894 /* 1895 * If quiescing is set, we are racing with __ieee80211_suspend. 1896 * __ieee80211_suspend flushes the workers after setting quiescing, 1897 * and we check quiescing / suspended before enqueing new workers. 1898 * We should abort the worker to avoid the races below. 1899 */ 1900 if (local->quiescing) 1901 return false; 1902 1903 /* 1904 * We might already be suspended if the following scenario occurs: 1905 * __ieee80211_suspend Control path 1906 * 1907 * if (local->quiescing) 1908 * return; 1909 * local->quiescing = true; 1910 * flush_workqueue(); 1911 * queue_work(...); 1912 * local->suspended = true; 1913 * local->quiescing = false; 1914 * worker starts running... 1915 */ 1916 if (local->suspended) 1917 return false; 1918 1919 return true; 1920 } 1921 1922 void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata, 1923 struct sta_info *sta, 1924 struct txq_info *txq, int tid); 1925 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1926 u16 transaction, u16 auth_alg, u16 status, 1927 const u8 *extra, size_t extra_len, const u8 *bssid, 1928 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1929 u32 tx_flags); 1930 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1931 const u8 *bssid, u16 stype, u16 reason, 1932 bool send_frame, u8 *frame_buf); 1933 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1934 size_t buffer_len, 1935 struct ieee80211_scan_ies *ie_desc, 1936 const u8 *ie, size_t ie_len, 1937 u8 bands_used, u32 *rate_masks, 1938 struct cfg80211_chan_def *chandef); 1939 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1940 const u8 *src, const u8 *dst, 1941 u32 ratemask, 1942 struct ieee80211_channel *chan, 1943 const u8 *ssid, size_t ssid_len, 1944 const u8 *ie, size_t ie_len, 1945 bool directed); 1946 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, 1947 const u8 *src, const u8 *dst, 1948 const u8 *ssid, size_t ssid_len, 1949 const u8 *ie, size_t ie_len, 1950 u32 ratemask, bool directed, u32 tx_flags, 1951 struct ieee80211_channel *channel, bool scan); 1952 1953 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1954 struct ieee802_11_elems *elems, 1955 enum ieee80211_band band, u32 *basic_rates); 1956 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1957 enum ieee80211_smps_mode smps_mode); 1958 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1959 enum ieee80211_smps_mode smps_mode); 1960 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1961 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1962 1963 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1964 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1965 u16 cap); 1966 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1967 const struct cfg80211_chan_def *chandef, 1968 u16 prot_mode); 1969 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1970 u32 cap); 1971 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1972 const struct cfg80211_chan_def *chandef); 1973 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1974 const struct ieee80211_supported_band *sband, 1975 const u8 *srates, int srates_len, u32 *rates); 1976 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1977 struct sk_buff *skb, bool need_basic, 1978 enum ieee80211_band band); 1979 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1980 struct sk_buff *skb, bool need_basic, 1981 enum ieee80211_band band); 1982 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1983 1984 /* channel management */ 1985 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1986 const struct ieee80211_ht_operation *ht_oper, 1987 struct cfg80211_chan_def *chandef); 1988 void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, 1989 const struct ieee80211_vht_operation *oper, 1990 struct cfg80211_chan_def *chandef); 1991 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1992 1993 int __must_check 1994 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1995 const struct cfg80211_chan_def *chandef, 1996 enum ieee80211_chanctx_mode mode); 1997 int __must_check 1998 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1999 const struct cfg80211_chan_def *chandef, 2000 enum ieee80211_chanctx_mode mode, 2001 bool radar_required); 2002 int __must_check 2003 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2004 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2005 2006 int __must_check 2007 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2008 const struct cfg80211_chan_def *chandef, 2009 u32 *changed); 2010 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2011 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2012 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2013 bool clear); 2014 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2015 struct ieee80211_chanctx *ctx); 2016 2017 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2018 struct ieee80211_chanctx *chanctx); 2019 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2020 struct ieee80211_chanctx *ctx); 2021 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2022 2023 void ieee80211_dfs_cac_timer(unsigned long data); 2024 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2025 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2026 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2027 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2028 struct cfg80211_csa_settings *csa_settings); 2029 2030 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2031 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2032 const struct ieee80211_cipher_scheme * 2033 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2034 enum nl80211_iftype iftype); 2035 int ieee80211_cs_headroom(struct ieee80211_local *local, 2036 struct cfg80211_crypto_settings *crypto, 2037 enum nl80211_iftype iftype); 2038 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2039 struct ieee80211_sub_if_data *sdata); 2040 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2041 const struct cfg80211_chan_def *chandef, 2042 enum ieee80211_chanctx_mode chanmode, 2043 u8 radar_detect); 2044 int ieee80211_max_num_channels(struct ieee80211_local *local); 2045 2046 /* TDLS */ 2047 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2048 const u8 *peer, u8 action_code, u8 dialog_token, 2049 u16 status_code, u32 peer_capability, 2050 bool initiator, const u8 *extra_ies, 2051 size_t extra_ies_len); 2052 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2053 const u8 *peer, enum nl80211_tdls_operation oper); 2054 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2055 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2056 const u8 *addr, u8 oper_class, 2057 struct cfg80211_chan_def *chandef); 2058 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2059 struct net_device *dev, 2060 const u8 *addr); 2061 void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata, 2062 struct sk_buff *skb); 2063 2064 extern const struct ethtool_ops ieee80211_ethtool_ops; 2065 2066 #ifdef CONFIG_MAC80211_NOINLINE 2067 #define debug_noinline noinline 2068 #else 2069 #define debug_noinline 2070 #endif 2071 2072 #endif /* IEEE80211_I_H */ 2073