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. Decrease the 62 * probability of that happening by using legacy mode for all ACs but VO. 63 * The AP that caused us trouble was a Cisco 4410N. It ignores our 64 * setting, and always treats non-VO ACs as legacy. 65 */ 66 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 67 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 68 69 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 70 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 71 72 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 73 74 struct ieee80211_fragment_entry { 75 unsigned long first_frag_time; 76 unsigned int seq; 77 unsigned int rx_queue; 78 unsigned int last_frag; 79 unsigned int extra_len; 80 struct sk_buff_head skb_list; 81 int ccmp; /* Whether fragments were encrypted with CCMP */ 82 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 83 }; 84 85 86 struct ieee80211_bss { 87 u32 device_ts_beacon, device_ts_presp; 88 89 bool wmm_used; 90 bool uapsd_supported; 91 92 #define IEEE80211_MAX_SUPP_RATES 32 93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 94 size_t supp_rates_len; 95 struct ieee80211_rate *beacon_rate; 96 97 /* 98 * During association, we save an ERP value from a probe response so 99 * that we can feed ERP info to the driver when handling the 100 * association completes. these fields probably won't be up-to-date 101 * otherwise, you probably don't want to use them. 102 */ 103 bool has_erp_value; 104 u8 erp_value; 105 106 /* Keep track of the corruption of the last beacon/probe response. */ 107 u8 corrupt_data; 108 109 /* Keep track of what bits of information we have valid info for. */ 110 u8 valid_data; 111 }; 112 113 /** 114 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 115 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 116 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 117 * 118 * These are bss flags that are attached to a bss in the 119 * @corrupt_data field of &struct ieee80211_bss. 120 */ 121 enum ieee80211_bss_corrupt_data_flags { 122 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 123 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 124 }; 125 126 /** 127 * enum ieee80211_valid_data_flags - BSS valid data flags 128 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 129 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 130 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 131 * 132 * These are bss flags that are attached to a bss in the 133 * @valid_data field of &struct ieee80211_bss. They show which parts 134 * of the data structure were recieved as a result of an un-corrupted 135 * beacon/probe response. 136 */ 137 enum ieee80211_bss_valid_data_flags { 138 IEEE80211_BSS_VALID_WMM = BIT(1), 139 IEEE80211_BSS_VALID_RATES = BIT(2), 140 IEEE80211_BSS_VALID_ERP = BIT(3) 141 }; 142 143 typedef unsigned __bitwise__ ieee80211_tx_result; 144 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 145 #define TX_DROP ((__force ieee80211_tx_result) 1u) 146 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 147 148 #define IEEE80211_TX_UNICAST BIT(1) 149 #define IEEE80211_TX_PS_BUFFERED BIT(2) 150 151 struct ieee80211_tx_data { 152 struct sk_buff *skb; 153 struct sk_buff_head skbs; 154 struct ieee80211_local *local; 155 struct ieee80211_sub_if_data *sdata; 156 struct sta_info *sta; 157 struct ieee80211_key *key; 158 struct ieee80211_tx_rate rate; 159 160 unsigned int flags; 161 }; 162 163 164 typedef unsigned __bitwise__ ieee80211_rx_result; 165 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 166 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 167 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 168 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 169 170 /** 171 * enum ieee80211_packet_rx_flags - packet RX flags 172 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 173 * (incl. multicast frames) 174 * @IEEE80211_RX_FRAGMENTED: fragmented frame 175 * @IEEE80211_RX_AMSDU: a-MSDU packet 176 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 177 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 178 * 179 * These are per-frame flags that are attached to a frame in the 180 * @rx_flags field of &struct ieee80211_rx_status. 181 */ 182 enum ieee80211_packet_rx_flags { 183 IEEE80211_RX_RA_MATCH = BIT(1), 184 IEEE80211_RX_FRAGMENTED = BIT(2), 185 IEEE80211_RX_AMSDU = BIT(3), 186 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 187 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 188 }; 189 190 /** 191 * enum ieee80211_rx_flags - RX data flags 192 * 193 * @IEEE80211_RX_CMNTR: received on cooked monitor already 194 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 195 * to cfg80211_report_obss_beacon(). 196 * 197 * These flags are used across handling multiple interfaces 198 * for a single frame. 199 */ 200 enum ieee80211_rx_flags { 201 IEEE80211_RX_CMNTR = BIT(0), 202 IEEE80211_RX_BEACON_REPORTED = BIT(1), 203 }; 204 205 struct ieee80211_rx_data { 206 struct sk_buff *skb; 207 struct ieee80211_local *local; 208 struct ieee80211_sub_if_data *sdata; 209 struct sta_info *sta; 210 struct ieee80211_key *key; 211 212 unsigned int flags; 213 214 /* 215 * Index into sequence numbers array, 0..16 216 * since the last (16) is used for non-QoS, 217 * will be 16 on non-QoS frames. 218 */ 219 int seqno_idx; 220 221 /* 222 * Index into the security IV/PN arrays, 0..16 223 * since the last (16) is used for CCMP-encrypted 224 * management frames, will be set to 16 on mgmt 225 * frames and 0 on non-QoS frames. 226 */ 227 int security_idx; 228 229 u32 tkip_iv32; 230 u16 tkip_iv16; 231 }; 232 233 struct ieee80211_csa_settings { 234 const u16 *counter_offsets_beacon; 235 const u16 *counter_offsets_presp; 236 237 int n_counter_offsets_beacon; 238 int n_counter_offsets_presp; 239 240 u8 count; 241 }; 242 243 struct beacon_data { 244 u8 *head, *tail; 245 int head_len, tail_len; 246 struct ieee80211_meshconf_ie *meshconf; 247 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 248 u8 csa_current_counter; 249 struct rcu_head rcu_head; 250 }; 251 252 struct probe_resp { 253 struct rcu_head rcu_head; 254 int len; 255 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 256 u8 data[0]; 257 }; 258 259 struct ps_data { 260 /* yes, this looks ugly, but guarantees that we can later use 261 * bitmap_empty :) 262 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 263 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 264 __aligned(__alignof__(unsigned long)); 265 struct sk_buff_head bc_buf; 266 atomic_t num_sta_ps; /* number of stations in PS mode */ 267 int dtim_count; 268 bool dtim_bc_mc; 269 }; 270 271 struct ieee80211_if_ap { 272 struct beacon_data __rcu *beacon; 273 struct probe_resp __rcu *probe_resp; 274 275 /* to be used after channel switch. */ 276 struct cfg80211_beacon_data *next_beacon; 277 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 278 279 struct ps_data ps; 280 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 281 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 282 driver_smps_mode; /* smps mode request */ 283 284 struct work_struct request_smps_work; 285 }; 286 287 struct ieee80211_if_wds { 288 struct sta_info *sta; 289 u8 remote_addr[ETH_ALEN]; 290 }; 291 292 struct ieee80211_if_vlan { 293 struct list_head list; /* write-protected with RTNL and local->mtx */ 294 295 /* used for all tx if the VLAN is configured to 4-addr mode */ 296 struct sta_info __rcu *sta; 297 }; 298 299 struct mesh_stats { 300 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 301 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 302 __u32 fwded_frames; /* Mesh total forwarded frames */ 303 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 304 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 305 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 306 }; 307 308 #define PREQ_Q_F_START 0x1 309 #define PREQ_Q_F_REFRESH 0x2 310 struct mesh_preq_queue { 311 struct list_head list; 312 u8 dst[ETH_ALEN]; 313 u8 flags; 314 }; 315 316 #if HZ/100 == 0 317 #define IEEE80211_ROC_MIN_LEFT 1 318 #else 319 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 320 #endif 321 322 struct ieee80211_roc_work { 323 struct list_head list; 324 struct list_head dependents; 325 326 struct delayed_work work; 327 328 struct ieee80211_sub_if_data *sdata; 329 330 struct ieee80211_channel *chan; 331 332 bool started, abort, hw_begun, notified; 333 bool to_be_freed; 334 bool on_channel; 335 336 unsigned long hw_start_time; 337 338 u32 duration, req_duration; 339 struct sk_buff *frame; 340 u64 cookie, mgmt_tx_cookie; 341 enum ieee80211_roc_type type; 342 }; 343 344 /* flags used in struct ieee80211_if_managed.flags */ 345 enum ieee80211_sta_flags { 346 IEEE80211_STA_CONNECTION_POLL = BIT(1), 347 IEEE80211_STA_CONTROL_PORT = BIT(2), 348 IEEE80211_STA_DISABLE_HT = BIT(4), 349 IEEE80211_STA_MFP_ENABLED = BIT(6), 350 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 351 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 352 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 353 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 354 IEEE80211_STA_DISABLE_VHT = BIT(11), 355 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 356 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 357 IEEE80211_STA_DISABLE_WMM = BIT(14), 358 IEEE80211_STA_ENABLE_RRM = BIT(15), 359 }; 360 361 struct ieee80211_mgd_auth_data { 362 struct cfg80211_bss *bss; 363 unsigned long timeout; 364 int tries; 365 u16 algorithm, expected_transaction; 366 367 u8 key[WLAN_KEY_LEN_WEP104]; 368 u8 key_len, key_idx; 369 bool done; 370 bool timeout_started; 371 372 u16 sae_trans, sae_status; 373 size_t data_len; 374 u8 data[]; 375 }; 376 377 struct ieee80211_mgd_assoc_data { 378 struct cfg80211_bss *bss; 379 const u8 *supp_rates; 380 381 unsigned long timeout; 382 int tries; 383 384 u16 capability; 385 u8 prev_bssid[ETH_ALEN]; 386 u8 ssid[IEEE80211_MAX_SSID_LEN]; 387 u8 ssid_len; 388 u8 supp_rates_len; 389 bool wmm, uapsd; 390 bool need_beacon; 391 bool synced; 392 bool timeout_started; 393 394 u8 ap_ht_param; 395 396 struct ieee80211_vht_cap ap_vht_cap; 397 398 size_t ie_len; 399 u8 ie[]; 400 }; 401 402 struct ieee80211_if_managed { 403 struct timer_list timer; 404 struct timer_list conn_mon_timer; 405 struct timer_list bcn_mon_timer; 406 struct timer_list chswitch_timer; 407 struct work_struct monitor_work; 408 struct work_struct chswitch_work; 409 struct work_struct beacon_connection_loss_work; 410 struct work_struct csa_connection_drop_work; 411 412 unsigned long beacon_timeout; 413 unsigned long probe_timeout; 414 int probe_send_count; 415 bool nullfunc_failed; 416 bool connection_loss; 417 418 struct cfg80211_bss *associated; 419 struct ieee80211_mgd_auth_data *auth_data; 420 struct ieee80211_mgd_assoc_data *assoc_data; 421 422 u8 bssid[ETH_ALEN]; 423 424 u16 aid; 425 426 bool powersave; /* powersave requested for this iface */ 427 bool broken_ap; /* AP is broken -- turn off powersave */ 428 bool have_beacon; 429 u8 dtim_period; 430 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 431 driver_smps_mode; /* smps mode request */ 432 433 struct work_struct request_smps_work; 434 435 unsigned int flags; 436 437 bool beacon_crc_valid; 438 u32 beacon_crc; 439 440 bool status_acked; 441 bool status_received; 442 __le16 status_fc; 443 444 enum { 445 IEEE80211_MFP_DISABLED, 446 IEEE80211_MFP_OPTIONAL, 447 IEEE80211_MFP_REQUIRED 448 } mfp; /* management frame protection */ 449 450 /* 451 * Bitmask of enabled u-apsd queues, 452 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 453 * to take effect. 454 */ 455 unsigned int uapsd_queues; 456 457 /* 458 * Maximum number of buffered frames AP can deliver during a 459 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 460 * Needs a new association to take effect. 461 */ 462 unsigned int uapsd_max_sp_len; 463 464 int wmm_last_param_set; 465 466 u8 use_4addr; 467 468 s16 p2p_noa_index; 469 470 /* Signal strength from the last Beacon frame in the current BSS. */ 471 int last_beacon_signal; 472 473 /* 474 * Weighted average of the signal strength from Beacon frames in the 475 * current BSS. This is in units of 1/16 of the signal unit to maintain 476 * accuracy and to speed up calculations, i.e., the value need to be 477 * divided by 16 to get the actual value. 478 */ 479 int ave_beacon_signal; 480 481 /* 482 * Number of Beacon frames used in ave_beacon_signal. This can be used 483 * to avoid generating less reliable cqm events that would be based 484 * only on couple of received frames. 485 */ 486 unsigned int count_beacon_signal; 487 488 /* 489 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 490 * that triggered a cqm event. 0 indicates that no event has been 491 * generated for the current association. 492 */ 493 int last_cqm_event_signal; 494 495 /* 496 * State variables for keeping track of RSSI of the AP currently 497 * connected to and informing driver when RSSI has gone 498 * below/above a certain threshold. 499 */ 500 int rssi_min_thold, rssi_max_thold; 501 int last_ave_beacon_signal; 502 503 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 504 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 505 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 506 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 507 508 u8 tdls_peer[ETH_ALEN] __aligned(2); 509 struct delayed_work tdls_peer_del_work; 510 }; 511 512 struct ieee80211_if_ibss { 513 struct timer_list timer; 514 struct work_struct csa_connection_drop_work; 515 516 unsigned long last_scan_completed; 517 518 u32 basic_rates; 519 520 bool fixed_bssid; 521 bool fixed_channel; 522 bool privacy; 523 524 bool control_port; 525 bool userspace_handles_dfs; 526 527 u8 bssid[ETH_ALEN] __aligned(2); 528 u8 ssid[IEEE80211_MAX_SSID_LEN]; 529 u8 ssid_len, ie_len; 530 u8 *ie; 531 struct cfg80211_chan_def chandef; 532 533 unsigned long ibss_join_req; 534 /* probe response/beacon for IBSS */ 535 struct beacon_data __rcu *presp; 536 537 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 538 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 539 540 spinlock_t incomplete_lock; 541 struct list_head incomplete_stations; 542 543 enum { 544 IEEE80211_IBSS_MLME_SEARCH, 545 IEEE80211_IBSS_MLME_JOINED, 546 } state; 547 }; 548 549 /** 550 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 551 * 552 * these declarations define the interface, which enables 553 * vendor-specific mesh synchronization 554 * 555 */ 556 struct ieee802_11_elems; 557 struct ieee80211_mesh_sync_ops { 558 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 559 u16 stype, 560 struct ieee80211_mgmt *mgmt, 561 struct ieee802_11_elems *elems, 562 struct ieee80211_rx_status *rx_status); 563 564 /* should be called with beacon_data under RCU read lock */ 565 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 566 struct beacon_data *beacon); 567 /* add other framework functions here */ 568 }; 569 570 struct mesh_csa_settings { 571 struct rcu_head rcu_head; 572 struct cfg80211_csa_settings settings; 573 }; 574 575 struct ieee80211_if_mesh { 576 struct timer_list housekeeping_timer; 577 struct timer_list mesh_path_timer; 578 struct timer_list mesh_path_root_timer; 579 580 unsigned long wrkq_flags; 581 unsigned long mbss_changed; 582 583 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 584 size_t mesh_id_len; 585 /* Active Path Selection Protocol Identifier */ 586 u8 mesh_pp_id; 587 /* Active Path Selection Metric Identifier */ 588 u8 mesh_pm_id; 589 /* Congestion Control Mode Identifier */ 590 u8 mesh_cc_id; 591 /* Synchronization Protocol Identifier */ 592 u8 mesh_sp_id; 593 /* Authentication Protocol Identifier */ 594 u8 mesh_auth_id; 595 /* Local mesh Sequence Number */ 596 u32 sn; 597 /* Last used PREQ ID */ 598 u32 preq_id; 599 atomic_t mpaths; 600 /* Timestamp of last SN update */ 601 unsigned long last_sn_update; 602 /* Time when it's ok to send next PERR */ 603 unsigned long next_perr; 604 /* Timestamp of last PREQ sent */ 605 unsigned long last_preq; 606 struct mesh_rmc *rmc; 607 spinlock_t mesh_preq_queue_lock; 608 struct mesh_preq_queue preq_queue; 609 int preq_queue_len; 610 struct mesh_stats mshstats; 611 struct mesh_config mshcfg; 612 atomic_t estab_plinks; 613 u32 mesh_seqnum; 614 bool accepting_plinks; 615 int num_gates; 616 struct beacon_data __rcu *beacon; 617 const u8 *ie; 618 u8 ie_len; 619 enum { 620 IEEE80211_MESH_SEC_NONE = 0x0, 621 IEEE80211_MESH_SEC_AUTHED = 0x1, 622 IEEE80211_MESH_SEC_SECURED = 0x2, 623 } security; 624 bool user_mpm; 625 /* Extensible Synchronization Framework */ 626 const struct ieee80211_mesh_sync_ops *sync_ops; 627 s64 sync_offset_clockdrift_max; 628 spinlock_t sync_offset_lock; 629 bool adjusting_tbtt; 630 /* mesh power save */ 631 enum nl80211_mesh_power_mode nonpeer_pm; 632 int ps_peers_light_sleep; 633 int ps_peers_deep_sleep; 634 struct ps_data ps; 635 /* Channel Switching Support */ 636 struct mesh_csa_settings __rcu *csa; 637 enum { 638 IEEE80211_MESH_CSA_ROLE_NONE, 639 IEEE80211_MESH_CSA_ROLE_INIT, 640 IEEE80211_MESH_CSA_ROLE_REPEATER, 641 } csa_role; 642 u8 chsw_ttl; 643 u16 pre_value; 644 645 /* offset from skb->data while building IE */ 646 int meshconf_offset; 647 }; 648 649 #ifdef CONFIG_MAC80211_MESH 650 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 651 do { (msh)->mshstats.name++; } while (0) 652 #else 653 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 654 do { } while (0) 655 #endif 656 657 /** 658 * enum ieee80211_sub_if_data_flags - virtual interface flags 659 * 660 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 661 * @IEEE80211_SDATA_PROMISC: interface is promisc 662 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 663 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 664 * associated stations and deliver multicast frames both 665 * back to wireless media and to the local net stack. 666 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 667 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 668 */ 669 enum ieee80211_sub_if_data_flags { 670 IEEE80211_SDATA_ALLMULTI = BIT(0), 671 IEEE80211_SDATA_PROMISC = BIT(1), 672 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 673 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 674 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 675 IEEE80211_SDATA_IN_DRIVER = BIT(5), 676 }; 677 678 /** 679 * enum ieee80211_sdata_state_bits - virtual interface state bits 680 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 681 * mirrors netif_running() but is separate for interface type 682 * change handling while the interface is up 683 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 684 * mode, so queues are stopped 685 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 686 * to offchannel, reset when offchannel returns 687 */ 688 enum ieee80211_sdata_state_bits { 689 SDATA_STATE_RUNNING, 690 SDATA_STATE_OFFCHANNEL, 691 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 692 }; 693 694 /** 695 * enum ieee80211_chanctx_mode - channel context configuration mode 696 * 697 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 698 * multiple interfaces 699 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 700 * only by a single interface. This can be used for example for 701 * non-fixed channel IBSS. 702 */ 703 enum ieee80211_chanctx_mode { 704 IEEE80211_CHANCTX_SHARED, 705 IEEE80211_CHANCTX_EXCLUSIVE 706 }; 707 708 /** 709 * enum ieee80211_chanctx_replace_state - channel context replacement state 710 * 711 * This is used for channel context in-place reservations that require channel 712 * context switch/swap. 713 * 714 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 715 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 716 * by a (not yet registered) channel context pointed by %replace_ctx. 717 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 718 * replaces an existing channel context pointed to by %replace_ctx. 719 */ 720 enum ieee80211_chanctx_replace_state { 721 IEEE80211_CHANCTX_REPLACE_NONE, 722 IEEE80211_CHANCTX_WILL_BE_REPLACED, 723 IEEE80211_CHANCTX_REPLACES_OTHER, 724 }; 725 726 struct ieee80211_chanctx { 727 struct list_head list; 728 struct rcu_head rcu_head; 729 730 struct list_head assigned_vifs; 731 struct list_head reserved_vifs; 732 733 enum ieee80211_chanctx_replace_state replace_state; 734 struct ieee80211_chanctx *replace_ctx; 735 736 enum ieee80211_chanctx_mode mode; 737 bool driver_present; 738 739 struct ieee80211_chanctx_conf conf; 740 }; 741 742 struct mac80211_qos_map { 743 struct cfg80211_qos_map qos_map; 744 struct rcu_head rcu_head; 745 }; 746 747 struct ieee80211_sub_if_data { 748 struct list_head list; 749 750 struct wireless_dev wdev; 751 752 /* keys */ 753 struct list_head key_list; 754 755 /* count for keys needing tailroom space allocation */ 756 int crypto_tx_tailroom_needed_cnt; 757 int crypto_tx_tailroom_pending_dec; 758 struct delayed_work dec_tailroom_needed_wk; 759 760 struct net_device *dev; 761 struct ieee80211_local *local; 762 763 unsigned int flags; 764 765 unsigned long state; 766 767 int drop_unencrypted; 768 769 char name[IFNAMSIZ]; 770 771 /* Fragment table for host-based reassembly */ 772 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 773 unsigned int fragment_next; 774 775 /* TID bitmap for NoAck policy */ 776 u16 noack_map; 777 778 /* bit field of ACM bits (BIT(802.1D tag)) */ 779 u8 wmm_acm; 780 781 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 782 struct ieee80211_key __rcu *default_unicast_key; 783 struct ieee80211_key __rcu *default_multicast_key; 784 struct ieee80211_key __rcu *default_mgmt_key; 785 786 u16 sequence_number; 787 __be16 control_port_protocol; 788 bool control_port_no_encrypt; 789 int encrypt_headroom; 790 791 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 792 struct mac80211_qos_map __rcu *qos_map; 793 794 struct work_struct csa_finalize_work; 795 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 796 struct cfg80211_chan_def csa_chandef; 797 798 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 799 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 800 801 /* context reservation -- protected with chanctx_mtx */ 802 struct ieee80211_chanctx *reserved_chanctx; 803 struct cfg80211_chan_def reserved_chandef; 804 bool reserved_radar_required; 805 bool reserved_ready; 806 807 /* used to reconfigure hardware SM PS */ 808 struct work_struct recalc_smps; 809 810 struct work_struct work; 811 struct sk_buff_head skb_queue; 812 813 u8 needed_rx_chains; 814 enum ieee80211_smps_mode smps_mode; 815 816 int user_power_level; /* in dBm */ 817 int ap_power_level; /* in dBm */ 818 819 bool radar_required; 820 struct delayed_work dfs_cac_timer_work; 821 822 /* 823 * AP this belongs to: self in AP mode and 824 * corresponding AP in VLAN mode, NULL for 825 * all others (might be needed later in IBSS) 826 */ 827 struct ieee80211_if_ap *bss; 828 829 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 830 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 831 832 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 833 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 834 835 union { 836 struct ieee80211_if_ap ap; 837 struct ieee80211_if_wds wds; 838 struct ieee80211_if_vlan vlan; 839 struct ieee80211_if_managed mgd; 840 struct ieee80211_if_ibss ibss; 841 struct ieee80211_if_mesh mesh; 842 u32 mntr_flags; 843 } u; 844 845 #ifdef CONFIG_MAC80211_DEBUGFS 846 struct { 847 struct dentry *subdir_stations; 848 struct dentry *default_unicast_key; 849 struct dentry *default_multicast_key; 850 struct dentry *default_mgmt_key; 851 } debugfs; 852 #endif 853 854 /* must be last, dynamically sized area in this! */ 855 struct ieee80211_vif vif; 856 }; 857 858 static inline 859 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 860 { 861 return container_of(p, struct ieee80211_sub_if_data, vif); 862 } 863 864 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 865 __acquires(&sdata->wdev.mtx) 866 { 867 mutex_lock(&sdata->wdev.mtx); 868 __acquire(&sdata->wdev.mtx); 869 } 870 871 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 872 __releases(&sdata->wdev.mtx) 873 { 874 mutex_unlock(&sdata->wdev.mtx); 875 __release(&sdata->wdev.mtx); 876 } 877 878 #define sdata_dereference(p, sdata) \ 879 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 880 881 static inline void 882 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 883 { 884 lockdep_assert_held(&sdata->wdev.mtx); 885 } 886 887 static inline enum ieee80211_band 888 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 889 { 890 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 891 struct ieee80211_chanctx_conf *chanctx_conf; 892 893 rcu_read_lock(); 894 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 895 if (!WARN_ON(!chanctx_conf)) 896 band = chanctx_conf->def.chan->band; 897 rcu_read_unlock(); 898 899 return band; 900 } 901 902 static inline int 903 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 904 { 905 switch (chandef->width) { 906 case NL80211_CHAN_WIDTH_5: 907 return 2; 908 case NL80211_CHAN_WIDTH_10: 909 return 1; 910 default: 911 return 0; 912 } 913 } 914 915 static inline int 916 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 917 { 918 struct ieee80211_chanctx_conf *chanctx_conf; 919 int shift = 0; 920 921 rcu_read_lock(); 922 chanctx_conf = rcu_dereference(vif->chanctx_conf); 923 if (chanctx_conf) 924 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 925 rcu_read_unlock(); 926 927 return shift; 928 } 929 930 struct ieee80211_rx_agg { 931 u8 addr[ETH_ALEN]; 932 u16 tid; 933 }; 934 935 enum sdata_queue_type { 936 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 937 IEEE80211_SDATA_QUEUE_AGG_START = 1, 938 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 939 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3, 940 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4, 941 }; 942 943 enum { 944 IEEE80211_RX_MSG = 1, 945 IEEE80211_TX_STATUS_MSG = 2, 946 }; 947 948 enum queue_stop_reason { 949 IEEE80211_QUEUE_STOP_REASON_DRIVER, 950 IEEE80211_QUEUE_STOP_REASON_PS, 951 IEEE80211_QUEUE_STOP_REASON_CSA, 952 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 953 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 954 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 955 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 956 IEEE80211_QUEUE_STOP_REASON_FLUSH, 957 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 958 959 IEEE80211_QUEUE_STOP_REASONS, 960 }; 961 962 #ifdef CONFIG_MAC80211_LEDS 963 struct tpt_led_trigger { 964 struct led_trigger trig; 965 char name[32]; 966 const struct ieee80211_tpt_blink *blink_table; 967 unsigned int blink_table_len; 968 struct timer_list timer; 969 unsigned long prev_traffic; 970 unsigned long tx_bytes, rx_bytes; 971 unsigned int active, want; 972 bool running; 973 }; 974 #endif 975 976 /* 977 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 978 * 979 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 980 * certain latency range (in Milliseconds). Each station that uses these 981 * ranges will have bins to count the amount of frames received in that range. 982 * The user can configure the ranges via debugfs. 983 * If ranges is NULL then Tx latency statistics bins are disabled for all 984 * stations. 985 * 986 * @n_ranges: number of ranges that are taken in account 987 * @ranges: the ranges that the user requested or NULL if disabled. 988 */ 989 struct ieee80211_tx_latency_bin_ranges { 990 int n_ranges; 991 u32 ranges[]; 992 }; 993 994 /** 995 * mac80211 scan flags - currently active scan mode 996 * 997 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 998 * well be on the operating channel 999 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1000 * determine if we are on the operating channel or not 1001 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1002 * channel. This should not interrupt normal traffic. 1003 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1004 * that the scan completed. 1005 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1006 * a scan complete for an aborted scan. 1007 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1008 * cancelled. 1009 */ 1010 enum { 1011 SCAN_SW_SCANNING, 1012 SCAN_HW_SCANNING, 1013 SCAN_ONCHANNEL_SCANNING, 1014 SCAN_COMPLETED, 1015 SCAN_ABORTED, 1016 SCAN_HW_CANCELLED, 1017 }; 1018 1019 /** 1020 * enum mac80211_scan_state - scan state machine states 1021 * 1022 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1023 * determines if we should keep on scanning or switch back to the 1024 * operating channel 1025 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1026 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1027 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1028 * send out data 1029 * @SCAN_RESUME: Resume the scan and scan the next channel 1030 * @SCAN_ABORT: Abort the scan and go back to operating channel 1031 */ 1032 enum mac80211_scan_state { 1033 SCAN_DECISION, 1034 SCAN_SET_CHANNEL, 1035 SCAN_SEND_PROBE, 1036 SCAN_SUSPEND, 1037 SCAN_RESUME, 1038 SCAN_ABORT, 1039 }; 1040 1041 struct ieee80211_local { 1042 /* embed the driver visible part. 1043 * don't cast (use the static inlines below), but we keep 1044 * it first anyway so they become a no-op */ 1045 struct ieee80211_hw hw; 1046 1047 const struct ieee80211_ops *ops; 1048 1049 /* 1050 * private workqueue to mac80211. mac80211 makes this accessible 1051 * via ieee80211_queue_work() 1052 */ 1053 struct workqueue_struct *workqueue; 1054 1055 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1056 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1057 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1058 spinlock_t queue_stop_reason_lock; 1059 1060 int open_count; 1061 int monitors, cooked_mntrs; 1062 /* number of interfaces with corresponding FIF_ flags */ 1063 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1064 fif_probe_req; 1065 int probe_req_reg; 1066 unsigned int filter_flags; /* FIF_* */ 1067 1068 bool wiphy_ciphers_allocated; 1069 1070 bool use_chanctx; 1071 1072 /* protects the aggregated multicast list and filter calls */ 1073 spinlock_t filter_lock; 1074 1075 /* used for uploading changed mc list */ 1076 struct work_struct reconfig_filter; 1077 1078 /* aggregated multicast list */ 1079 struct netdev_hw_addr_list mc_list; 1080 1081 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1082 1083 /* 1084 * suspended is true if we finished all the suspend _and_ we have 1085 * not yet come up from resume. This is to be used by mac80211 1086 * to ensure driver sanity during suspend and mac80211's own 1087 * sanity. It can eventually be used for WoW as well. 1088 */ 1089 bool suspended; 1090 1091 /* 1092 * Resuming is true while suspended, but when we're reprogramming the 1093 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1094 * again even though some other parts of the stack are still suspended 1095 * and we still drop received frames to avoid waking the stack. 1096 */ 1097 bool resuming; 1098 1099 /* 1100 * quiescing is true during the suspend process _only_ to 1101 * ease timer cancelling etc. 1102 */ 1103 bool quiescing; 1104 1105 /* device is started */ 1106 bool started; 1107 1108 /* device is during a HW reconfig */ 1109 bool in_reconfig; 1110 1111 /* wowlan is enabled -- don't reconfig on resume */ 1112 bool wowlan; 1113 1114 /* DFS/radar detection is enabled */ 1115 bool radar_detect_enabled; 1116 struct work_struct radar_detected_work; 1117 1118 /* number of RX chains the hardware has */ 1119 u8 rx_chains; 1120 1121 int tx_headroom; /* required headroom for hardware/radiotap */ 1122 1123 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1124 * added to skb_queue will be processed, but frames in 1125 * skb_queue_unreliable may be dropped if the total length of these 1126 * queues increases over the limit. */ 1127 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1128 struct tasklet_struct tasklet; 1129 struct sk_buff_head skb_queue; 1130 struct sk_buff_head skb_queue_unreliable; 1131 1132 spinlock_t rx_path_lock; 1133 1134 /* Station data */ 1135 /* 1136 * The mutex only protects the list, hash table and 1137 * counter, reads are done with RCU. 1138 */ 1139 struct mutex sta_mtx; 1140 spinlock_t tim_lock; 1141 unsigned long num_sta; 1142 struct list_head sta_list; 1143 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1144 struct timer_list sta_cleanup; 1145 int sta_generation; 1146 1147 /* 1148 * Tx latency statistics parameters for all stations. 1149 * Can enable via debugfs (NULL when disabled). 1150 */ 1151 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1152 1153 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1154 struct tasklet_struct tx_pending_tasklet; 1155 1156 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1157 1158 /* number of interfaces with corresponding IFF_ flags */ 1159 atomic_t iff_allmultis, iff_promiscs; 1160 1161 struct rate_control_ref *rate_ctrl; 1162 1163 struct crypto_cipher *wep_tx_tfm; 1164 struct crypto_cipher *wep_rx_tfm; 1165 u32 wep_iv; 1166 1167 /* see iface.c */ 1168 struct list_head interfaces; 1169 struct mutex iflist_mtx; 1170 1171 /* 1172 * Key mutex, protects sdata's key_list and sta_info's 1173 * key pointers (write access, they're RCU.) 1174 */ 1175 struct mutex key_mtx; 1176 1177 /* mutex for scan and work locking */ 1178 struct mutex mtx; 1179 1180 /* Scanning and BSS list */ 1181 unsigned long scanning; 1182 struct cfg80211_ssid scan_ssid; 1183 struct cfg80211_scan_request *int_scan_req; 1184 struct cfg80211_scan_request *scan_req; 1185 struct ieee80211_scan_request *hw_scan_req; 1186 struct cfg80211_chan_def scan_chandef; 1187 enum ieee80211_band hw_scan_band; 1188 int scan_channel_idx; 1189 int scan_ies_len; 1190 int hw_scan_ies_bufsize; 1191 1192 struct work_struct sched_scan_stopped_work; 1193 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1194 struct cfg80211_sched_scan_request *sched_scan_req; 1195 1196 unsigned long leave_oper_channel_time; 1197 enum mac80211_scan_state next_scan_state; 1198 struct delayed_work scan_work; 1199 struct ieee80211_sub_if_data __rcu *scan_sdata; 1200 /* For backward compatibility only -- do not use */ 1201 struct cfg80211_chan_def _oper_chandef; 1202 1203 /* Temporary remain-on-channel for off-channel operations */ 1204 struct ieee80211_channel *tmp_channel; 1205 1206 /* channel contexts */ 1207 struct list_head chanctx_list; 1208 struct mutex chanctx_mtx; 1209 1210 /* SNMP counters */ 1211 /* dot11CountersTable */ 1212 u32 dot11TransmittedFragmentCount; 1213 u32 dot11MulticastTransmittedFrameCount; 1214 u32 dot11FailedCount; 1215 u32 dot11RetryCount; 1216 u32 dot11MultipleRetryCount; 1217 u32 dot11FrameDuplicateCount; 1218 u32 dot11ReceivedFragmentCount; 1219 u32 dot11MulticastReceivedFrameCount; 1220 u32 dot11TransmittedFrameCount; 1221 1222 #ifdef CONFIG_MAC80211_LEDS 1223 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1224 struct tpt_led_trigger *tpt_led_trigger; 1225 char tx_led_name[32], rx_led_name[32], 1226 assoc_led_name[32], radio_led_name[32]; 1227 #endif 1228 1229 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1230 /* TX/RX handler statistics */ 1231 unsigned int tx_handlers_drop; 1232 unsigned int tx_handlers_queued; 1233 unsigned int tx_handlers_drop_unencrypted; 1234 unsigned int tx_handlers_drop_fragment; 1235 unsigned int tx_handlers_drop_wep; 1236 unsigned int tx_handlers_drop_not_assoc; 1237 unsigned int tx_handlers_drop_unauth_port; 1238 unsigned int rx_handlers_drop; 1239 unsigned int rx_handlers_queued; 1240 unsigned int rx_handlers_drop_nullfunc; 1241 unsigned int rx_handlers_drop_defrag; 1242 unsigned int rx_handlers_drop_short; 1243 unsigned int tx_expand_skb_head; 1244 unsigned int tx_expand_skb_head_cloned; 1245 unsigned int rx_expand_skb_head; 1246 unsigned int rx_expand_skb_head2; 1247 unsigned int rx_handlers_fragments; 1248 unsigned int tx_status_drop; 1249 #define I802_DEBUG_INC(c) (c)++ 1250 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1251 #define I802_DEBUG_INC(c) do { } while (0) 1252 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1253 1254 1255 int total_ps_buffered; /* total number of all buffered unicast and 1256 * multicast packets for power saving stations 1257 */ 1258 1259 bool pspolling; 1260 bool offchannel_ps_enabled; 1261 /* 1262 * PS can only be enabled when we have exactly one managed 1263 * interface (and monitors) in PS, this then points there. 1264 */ 1265 struct ieee80211_sub_if_data *ps_sdata; 1266 struct work_struct dynamic_ps_enable_work; 1267 struct work_struct dynamic_ps_disable_work; 1268 struct timer_list dynamic_ps_timer; 1269 struct notifier_block network_latency_notifier; 1270 struct notifier_block ifa_notifier; 1271 struct notifier_block ifa6_notifier; 1272 1273 /* 1274 * The dynamic ps timeout configured from user space via WEXT - 1275 * this will override whatever chosen by mac80211 internally. 1276 */ 1277 int dynamic_ps_forced_timeout; 1278 1279 int user_power_level; /* in dBm, for all interfaces */ 1280 1281 enum ieee80211_smps_mode smps_mode; 1282 1283 struct work_struct restart_work; 1284 1285 #ifdef CONFIG_MAC80211_DEBUGFS 1286 struct local_debugfsdentries { 1287 struct dentry *rcdir; 1288 struct dentry *keys; 1289 } debugfs; 1290 #endif 1291 1292 /* 1293 * Remain-on-channel support 1294 */ 1295 struct list_head roc_list; 1296 struct work_struct hw_roc_start, hw_roc_done; 1297 unsigned long hw_roc_start_time; 1298 u64 roc_cookie_counter; 1299 1300 struct idr ack_status_frames; 1301 spinlock_t ack_status_lock; 1302 1303 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1304 1305 struct napi_struct *napi; 1306 1307 /* virtual monitor interface */ 1308 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1309 struct cfg80211_chan_def monitor_chandef; 1310 }; 1311 1312 static inline struct ieee80211_sub_if_data * 1313 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1314 { 1315 return netdev_priv(dev); 1316 } 1317 1318 static inline struct ieee80211_sub_if_data * 1319 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1320 { 1321 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1322 } 1323 1324 /* this struct represents 802.11n's RA/TID combination */ 1325 struct ieee80211_ra_tid { 1326 u8 ra[ETH_ALEN]; 1327 u16 tid; 1328 }; 1329 1330 /* this struct holds the value parsing from channel switch IE */ 1331 struct ieee80211_csa_ie { 1332 struct cfg80211_chan_def chandef; 1333 u8 mode; 1334 u8 count; 1335 u8 ttl; 1336 u16 pre_value; 1337 }; 1338 1339 /* Parsed Information Elements */ 1340 struct ieee802_11_elems { 1341 const u8 *ie_start; 1342 size_t total_len; 1343 1344 /* pointers to IEs */ 1345 const u8 *ssid; 1346 const u8 *supp_rates; 1347 const u8 *ds_params; 1348 const struct ieee80211_tim_ie *tim; 1349 const u8 *challenge; 1350 const u8 *rsn; 1351 const u8 *erp_info; 1352 const u8 *ext_supp_rates; 1353 const u8 *wmm_info; 1354 const u8 *wmm_param; 1355 const struct ieee80211_ht_cap *ht_cap_elem; 1356 const struct ieee80211_ht_operation *ht_operation; 1357 const struct ieee80211_vht_cap *vht_cap_elem; 1358 const struct ieee80211_vht_operation *vht_operation; 1359 const struct ieee80211_meshconf_ie *mesh_config; 1360 const u8 *mesh_id; 1361 const u8 *peering; 1362 const __le16 *awake_window; 1363 const u8 *preq; 1364 const u8 *prep; 1365 const u8 *perr; 1366 const struct ieee80211_rann_ie *rann; 1367 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1368 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1369 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1370 const u8 *country_elem; 1371 const u8 *pwr_constr_elem; 1372 const u8 *cisco_dtpc_elem; 1373 const struct ieee80211_timeout_interval_ie *timeout_int; 1374 const u8 *opmode_notif; 1375 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1376 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1377 1378 /* length of them, respectively */ 1379 u8 ssid_len; 1380 u8 supp_rates_len; 1381 u8 tim_len; 1382 u8 challenge_len; 1383 u8 rsn_len; 1384 u8 ext_supp_rates_len; 1385 u8 wmm_info_len; 1386 u8 wmm_param_len; 1387 u8 mesh_id_len; 1388 u8 peering_len; 1389 u8 preq_len; 1390 u8 prep_len; 1391 u8 perr_len; 1392 u8 country_elem_len; 1393 1394 /* whether a parse error occurred while retrieving these elements */ 1395 bool parse_error; 1396 }; 1397 1398 static inline struct ieee80211_local *hw_to_local( 1399 struct ieee80211_hw *hw) 1400 { 1401 return container_of(hw, struct ieee80211_local, hw); 1402 } 1403 1404 1405 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1406 { 1407 return ether_addr_equal(raddr, addr) || 1408 is_broadcast_ether_addr(raddr); 1409 } 1410 1411 static inline bool 1412 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1413 { 1414 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1415 status->flag & RX_FLAG_MACTIME_END); 1416 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1417 } 1418 1419 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1420 struct ieee80211_rx_status *status, 1421 unsigned int mpdu_len, 1422 unsigned int mpdu_offset); 1423 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1424 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1425 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1426 u32 changed); 1427 void ieee80211_configure_filter(struct ieee80211_local *local); 1428 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1429 1430 /* STA code */ 1431 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1432 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1433 struct cfg80211_auth_request *req); 1434 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1435 struct cfg80211_assoc_request *req); 1436 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1437 struct cfg80211_deauth_request *req); 1438 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1439 struct cfg80211_disassoc_request *req); 1440 void ieee80211_send_pspoll(struct ieee80211_local *local, 1441 struct ieee80211_sub_if_data *sdata); 1442 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1443 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1444 int ieee80211_max_network_latency(struct notifier_block *nb, 1445 unsigned long data, void *dummy); 1446 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1447 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1448 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1449 struct sk_buff *skb); 1450 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1451 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1452 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1453 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1454 __le16 fc, bool acked); 1455 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1456 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1457 1458 /* IBSS code */ 1459 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1460 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1461 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1462 const u8 *bssid, const u8 *addr, u32 supp_rates); 1463 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1464 struct cfg80211_ibss_params *params); 1465 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1466 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1467 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1468 struct sk_buff *skb); 1469 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1470 struct cfg80211_csa_settings *csa_settings); 1471 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1472 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1473 1474 /* mesh code */ 1475 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1476 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1477 struct sk_buff *skb); 1478 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1479 struct cfg80211_csa_settings *csa_settings); 1480 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1481 1482 /* scan/BSS handling */ 1483 void ieee80211_scan_work(struct work_struct *work); 1484 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1485 const u8 *ssid, u8 ssid_len, 1486 struct ieee80211_channel *chan, 1487 enum nl80211_bss_scan_width scan_width); 1488 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1489 struct cfg80211_scan_request *req); 1490 void ieee80211_scan_cancel(struct ieee80211_local *local); 1491 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1492 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1493 1494 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1495 struct ieee80211_bss * 1496 ieee80211_bss_info_update(struct ieee80211_local *local, 1497 struct ieee80211_rx_status *rx_status, 1498 struct ieee80211_mgmt *mgmt, 1499 size_t len, 1500 struct ieee802_11_elems *elems, 1501 struct ieee80211_channel *channel); 1502 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1503 struct ieee80211_bss *bss); 1504 1505 /* scheduled scan handling */ 1506 int 1507 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1508 struct cfg80211_sched_scan_request *req); 1509 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1510 struct cfg80211_sched_scan_request *req); 1511 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1512 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1513 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1514 1515 /* off-channel helpers */ 1516 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1517 void ieee80211_offchannel_return(struct ieee80211_local *local); 1518 void ieee80211_roc_setup(struct ieee80211_local *local); 1519 void ieee80211_start_next_roc(struct ieee80211_local *local); 1520 void ieee80211_roc_purge(struct ieee80211_local *local, 1521 struct ieee80211_sub_if_data *sdata); 1522 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1523 void ieee80211_sw_roc_work(struct work_struct *work); 1524 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1525 1526 /* channel switch handling */ 1527 void ieee80211_csa_finalize_work(struct work_struct *work); 1528 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1529 struct cfg80211_csa_settings *params); 1530 1531 /* interface handling */ 1532 int ieee80211_iface_init(void); 1533 void ieee80211_iface_exit(void); 1534 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1535 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1536 struct vif_params *params); 1537 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1538 enum nl80211_iftype type); 1539 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1540 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1541 u32 ieee80211_idle_off(struct ieee80211_local *local); 1542 void ieee80211_recalc_idle(struct ieee80211_local *local); 1543 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1544 const int offset); 1545 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1546 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1547 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1548 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1549 1550 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1551 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1552 1553 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1554 { 1555 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1556 } 1557 1558 /* tx handling */ 1559 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1560 void ieee80211_tx_pending(unsigned long data); 1561 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1562 struct net_device *dev); 1563 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1564 struct net_device *dev); 1565 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1566 struct sk_buff_head *skbs); 1567 1568 /* HT */ 1569 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1570 struct ieee80211_sta_ht_cap *ht_cap); 1571 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1572 struct ieee80211_supported_band *sband, 1573 const struct ieee80211_ht_cap *ht_cap_ie, 1574 struct sta_info *sta); 1575 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1576 const u8 *da, u16 tid, 1577 u16 initiator, u16 reason_code); 1578 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1579 enum ieee80211_smps_mode smps, const u8 *da, 1580 const u8 *bssid); 1581 void ieee80211_request_smps_ap_work(struct work_struct *work); 1582 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1583 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1584 enum ieee80211_smps_mode smps_mode_new); 1585 1586 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1587 u16 initiator, u16 reason, bool stop); 1588 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1589 u16 initiator, u16 reason, bool stop); 1590 void __ieee80211_start_rx_ba_session(struct sta_info *sta, 1591 u8 dialog_token, u16 timeout, 1592 u16 start_seq_num, u16 ba_policy, u16 tid, 1593 u16 buf_size, bool tx, bool auto_seq); 1594 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1595 enum ieee80211_agg_stop_reason reason); 1596 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1597 struct sta_info *sta, 1598 struct ieee80211_mgmt *mgmt, size_t len); 1599 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1600 struct sta_info *sta, 1601 struct ieee80211_mgmt *mgmt, 1602 size_t len); 1603 void ieee80211_process_addba_request(struct ieee80211_local *local, 1604 struct sta_info *sta, 1605 struct ieee80211_mgmt *mgmt, 1606 size_t len); 1607 1608 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1609 enum ieee80211_agg_stop_reason reason); 1610 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1611 enum ieee80211_agg_stop_reason reason); 1612 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1613 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1614 void ieee80211_ba_session_work(struct work_struct *work); 1615 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1616 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1617 1618 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1619 1620 /* VHT */ 1621 void 1622 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1623 struct ieee80211_supported_band *sband, 1624 const struct ieee80211_vht_cap *vht_cap_ie, 1625 struct sta_info *sta); 1626 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1627 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1628 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1629 struct sta_info *sta, u8 opmode, 1630 enum ieee80211_band band, bool nss_only); 1631 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1632 struct sta_info *sta, u8 opmode, 1633 enum ieee80211_band band, bool nss_only); 1634 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1635 struct ieee80211_sta_vht_cap *vht_cap); 1636 1637 /* Spectrum management */ 1638 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1639 struct ieee80211_mgmt *mgmt, 1640 size_t len); 1641 /** 1642 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1643 * @sdata: the sdata of the interface which has received the frame 1644 * @elems: parsed 802.11 elements received with the frame 1645 * @current_band: indicates the current band 1646 * @sta_flags: contains information about own capabilities and restrictions 1647 * to decide which channel switch announcements can be accepted. Only the 1648 * following subset of &enum ieee80211_sta_flags are evaluated: 1649 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1650 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1651 * %IEEE80211_STA_DISABLE_160MHZ. 1652 * @bssid: the currently connected bssid (for reporting) 1653 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1654 All of them will be filled with if success only. 1655 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1656 */ 1657 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1658 struct ieee802_11_elems *elems, 1659 enum ieee80211_band current_band, 1660 u32 sta_flags, u8 *bssid, 1661 struct ieee80211_csa_ie *csa_ie); 1662 1663 /* Suspend/resume and hw reconfiguration */ 1664 int ieee80211_reconfig(struct ieee80211_local *local); 1665 void ieee80211_stop_device(struct ieee80211_local *local); 1666 1667 int __ieee80211_suspend(struct ieee80211_hw *hw, 1668 struct cfg80211_wowlan *wowlan); 1669 1670 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1671 { 1672 struct ieee80211_local *local = hw_to_local(hw); 1673 1674 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1675 "%s: resume with hardware scan still in progress\n", 1676 wiphy_name(hw->wiphy)); 1677 1678 return ieee80211_reconfig(hw_to_local(hw)); 1679 } 1680 1681 /* utility functions/constants */ 1682 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1683 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1684 enum nl80211_iftype type); 1685 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1686 int rate, int erp, int short_preamble, 1687 int shift); 1688 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1689 struct ieee80211_hdr *hdr, const u8 *tsc, 1690 gfp_t gfp); 1691 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1692 bool bss_notify); 1693 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1694 enum ieee80211_band band); 1695 1696 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1697 struct sk_buff *skb, int tid, 1698 enum ieee80211_band band); 1699 1700 static inline void 1701 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1702 struct sk_buff *skb, int tid, 1703 enum ieee80211_band band) 1704 { 1705 rcu_read_lock(); 1706 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1707 rcu_read_unlock(); 1708 } 1709 1710 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1711 struct sk_buff *skb, int tid) 1712 { 1713 struct ieee80211_chanctx_conf *chanctx_conf; 1714 1715 rcu_read_lock(); 1716 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1717 if (WARN_ON(!chanctx_conf)) { 1718 rcu_read_unlock(); 1719 kfree_skb(skb); 1720 return; 1721 } 1722 1723 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1724 chanctx_conf->def.chan->band); 1725 rcu_read_unlock(); 1726 } 1727 1728 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1729 struct sk_buff *skb) 1730 { 1731 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1732 ieee80211_tx_skb_tid(sdata, skb, 7); 1733 } 1734 1735 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1736 struct ieee802_11_elems *elems, 1737 u64 filter, u32 crc); 1738 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1739 bool action, 1740 struct ieee802_11_elems *elems) 1741 { 1742 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1743 } 1744 1745 static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames) 1746 { 1747 struct sk_buff *tail = skb_peek_tail(frames); 1748 struct ieee80211_rx_status *status; 1749 1750 if (!tail) 1751 return false; 1752 1753 status = IEEE80211_SKB_RXCB(tail); 1754 if (status->flag & RX_FLAG_AMSDU_MORE) 1755 return false; 1756 1757 return true; 1758 } 1759 1760 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1761 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1762 void ieee80211_dynamic_ps_timer(unsigned long data); 1763 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1764 struct ieee80211_sub_if_data *sdata, 1765 int powersave); 1766 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1767 struct ieee80211_hdr *hdr); 1768 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1769 struct ieee80211_hdr *hdr, bool ack); 1770 1771 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1772 unsigned long queues, 1773 enum queue_stop_reason reason, 1774 bool refcounted); 1775 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1776 struct ieee80211_sub_if_data *sdata, 1777 enum queue_stop_reason reason); 1778 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1779 struct ieee80211_sub_if_data *sdata, 1780 enum queue_stop_reason reason); 1781 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1782 unsigned long queues, 1783 enum queue_stop_reason reason, 1784 bool refcounted); 1785 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1786 enum queue_stop_reason reason, 1787 bool refcounted); 1788 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1789 enum queue_stop_reason reason, 1790 bool refcounted); 1791 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1792 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1793 struct sk_buff *skb); 1794 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1795 struct sk_buff_head *skbs); 1796 void ieee80211_flush_queues(struct ieee80211_local *local, 1797 struct ieee80211_sub_if_data *sdata); 1798 1799 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1800 u16 transaction, u16 auth_alg, u16 status, 1801 const u8 *extra, size_t extra_len, const u8 *bssid, 1802 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1803 u32 tx_flags); 1804 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1805 const u8 *bssid, u16 stype, u16 reason, 1806 bool send_frame, u8 *frame_buf); 1807 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1808 size_t buffer_len, 1809 struct ieee80211_scan_ies *ie_desc, 1810 const u8 *ie, size_t ie_len, 1811 u8 bands_used, u32 *rate_masks, 1812 struct cfg80211_chan_def *chandef); 1813 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1814 u8 *dst, u32 ratemask, 1815 struct ieee80211_channel *chan, 1816 const u8 *ssid, size_t ssid_len, 1817 const u8 *ie, size_t ie_len, 1818 bool directed); 1819 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1820 const u8 *ssid, size_t ssid_len, 1821 const u8 *ie, size_t ie_len, 1822 u32 ratemask, bool directed, u32 tx_flags, 1823 struct ieee80211_channel *channel, bool scan); 1824 1825 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1826 struct ieee802_11_elems *elems, 1827 enum ieee80211_band band, u32 *basic_rates); 1828 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1829 enum ieee80211_smps_mode smps_mode); 1830 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1831 enum ieee80211_smps_mode smps_mode); 1832 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1833 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1834 1835 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1836 const u8 *ids, int n_ids, size_t offset); 1837 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1838 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1839 u16 cap); 1840 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1841 const struct cfg80211_chan_def *chandef, 1842 u16 prot_mode); 1843 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1844 u32 cap); 1845 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1846 const struct ieee80211_supported_band *sband, 1847 const u8 *srates, int srates_len, u32 *rates); 1848 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1849 struct sk_buff *skb, bool need_basic, 1850 enum ieee80211_band band); 1851 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1852 struct sk_buff *skb, bool need_basic, 1853 enum ieee80211_band band); 1854 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 1855 1856 /* channel management */ 1857 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1858 const struct ieee80211_ht_operation *ht_oper, 1859 struct cfg80211_chan_def *chandef); 1860 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1861 1862 int __must_check 1863 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1864 const struct cfg80211_chan_def *chandef, 1865 enum ieee80211_chanctx_mode mode); 1866 int __must_check 1867 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1868 const struct cfg80211_chan_def *chandef, 1869 enum ieee80211_chanctx_mode mode, 1870 bool radar_required); 1871 int __must_check 1872 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 1873 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 1874 1875 int __must_check 1876 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1877 const struct cfg80211_chan_def *chandef, 1878 u32 *changed); 1879 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1880 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1881 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1882 bool clear); 1883 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 1884 struct ieee80211_chanctx *ctx); 1885 1886 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1887 struct ieee80211_chanctx *chanctx); 1888 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 1889 struct ieee80211_chanctx *ctx); 1890 1891 void ieee80211_dfs_cac_timer(unsigned long data); 1892 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1893 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1894 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1895 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 1896 struct cfg80211_csa_settings *csa_settings); 1897 1898 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 1899 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 1900 const struct ieee80211_cipher_scheme * 1901 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 1902 enum nl80211_iftype iftype); 1903 int ieee80211_cs_headroom(struct ieee80211_local *local, 1904 struct cfg80211_crypto_settings *crypto, 1905 enum nl80211_iftype iftype); 1906 void ieee80211_recalc_dtim(struct ieee80211_local *local, 1907 struct ieee80211_sub_if_data *sdata); 1908 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 1909 const struct cfg80211_chan_def *chandef, 1910 enum ieee80211_chanctx_mode chanmode, 1911 u8 radar_detect); 1912 int ieee80211_max_num_channels(struct ieee80211_local *local); 1913 1914 /* TDLS */ 1915 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 1916 const u8 *peer, u8 action_code, u8 dialog_token, 1917 u16 status_code, u32 peer_capability, 1918 bool initiator, const u8 *extra_ies, 1919 size_t extra_ies_len); 1920 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 1921 const u8 *peer, enum nl80211_tdls_operation oper); 1922 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 1923 1924 extern const struct ethtool_ops ieee80211_ethtool_ops; 1925 1926 #ifdef CONFIG_MAC80211_NOINLINE 1927 #define debug_noinline noinline 1928 #else 1929 #define debug_noinline 1930 #endif 1931 1932 #endif /* IEEE80211_I_H */ 1933