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 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef IEEE80211_I_H 13 #define IEEE80211_I_H 14 15 #include <linux/kernel.h> 16 #include <linux/device.h> 17 #include <linux/if_ether.h> 18 #include <linux/interrupt.h> 19 #include <linux/list.h> 20 #include <linux/netdevice.h> 21 #include <linux/skbuff.h> 22 #include <linux/workqueue.h> 23 #include <linux/types.h> 24 #include <linux/spinlock.h> 25 #include <linux/etherdevice.h> 26 #include <linux/leds.h> 27 #include <linux/idr.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include "key.h" 32 #include "sta_info.h" 33 #include "debug.h" 34 35 struct ieee80211_local; 36 37 /* Maximum number of broadcast/multicast frames to buffer when some of the 38 * associated stations are using power saving. */ 39 #define AP_MAX_BC_BUFFER 128 40 41 /* Maximum number of frames buffered to all STAs, including multicast frames. 42 * Note: increasing this limit increases the potential memory requirement. Each 43 * frame can be up to about 2 kB long. */ 44 #define TOTAL_MAX_TX_BUFFER 512 45 46 /* Required encryption head and tailroom */ 47 #define IEEE80211_ENCRYPT_HEADROOM 8 48 #define IEEE80211_ENCRYPT_TAILROOM 18 49 50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 51 * reception of at least three fragmented frames. This limit can be increased 52 * by changing this define, at the cost of slower frame reassembly and 53 * increased memory use (about 2 kB of RAM per entry). */ 54 #define IEEE80211_FRAGMENT_MAX 4 55 56 /* power level hasn't been configured (or set to automatic) */ 57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 58 59 /* 60 * Some APs experience problems when working with U-APSD. Decrease the 61 * probability of that happening by using legacy mode for all ACs but VO. 62 * The AP that caused us trouble was a Cisco 4410N. It ignores our 63 * setting, and always treats non-VO ACs as legacy. 64 */ 65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 67 68 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 70 71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 72 73 struct ieee80211_fragment_entry { 74 unsigned long first_frag_time; 75 unsigned int seq; 76 unsigned int rx_queue; 77 unsigned int last_frag; 78 unsigned int extra_len; 79 struct sk_buff_head skb_list; 80 int ccmp; /* Whether fragments were encrypted with CCMP */ 81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 82 }; 83 84 85 struct ieee80211_bss { 86 u32 device_ts_beacon, device_ts_presp; 87 88 bool wmm_used; 89 bool uapsd_supported; 90 91 #define IEEE80211_MAX_SUPP_RATES 32 92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 93 size_t supp_rates_len; 94 struct ieee80211_rate *beacon_rate; 95 96 /* 97 * During association, we save an ERP value from a probe response so 98 * that we can feed ERP info to the driver when handling the 99 * association completes. these fields probably won't be up-to-date 100 * otherwise, you probably don't want to use them. 101 */ 102 bool has_erp_value; 103 u8 erp_value; 104 105 /* Keep track of the corruption of the last beacon/probe response. */ 106 u8 corrupt_data; 107 108 /* Keep track of what bits of information we have valid info for. */ 109 u8 valid_data; 110 }; 111 112 /** 113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 116 * 117 * These are bss flags that are attached to a bss in the 118 * @corrupt_data field of &struct ieee80211_bss. 119 */ 120 enum ieee80211_bss_corrupt_data_flags { 121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 123 }; 124 125 /** 126 * enum ieee80211_valid_data_flags - BSS valid data flags 127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 130 * 131 * These are bss flags that are attached to a bss in the 132 * @valid_data field of &struct ieee80211_bss. They show which parts 133 * of the data structure were recieved as a result of an un-corrupted 134 * beacon/probe response. 135 */ 136 enum ieee80211_bss_valid_data_flags { 137 IEEE80211_BSS_VALID_WMM = BIT(1), 138 IEEE80211_BSS_VALID_RATES = BIT(2), 139 IEEE80211_BSS_VALID_ERP = BIT(3) 140 }; 141 142 typedef unsigned __bitwise__ ieee80211_tx_result; 143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 144 #define TX_DROP ((__force ieee80211_tx_result) 1u) 145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 146 147 #define IEEE80211_TX_UNICAST BIT(1) 148 #define IEEE80211_TX_PS_BUFFERED BIT(2) 149 150 struct ieee80211_tx_data { 151 struct sk_buff *skb; 152 struct sk_buff_head skbs; 153 struct ieee80211_local *local; 154 struct ieee80211_sub_if_data *sdata; 155 struct sta_info *sta; 156 struct ieee80211_key *key; 157 struct ieee80211_tx_rate rate; 158 159 unsigned int flags; 160 }; 161 162 163 typedef unsigned __bitwise__ ieee80211_rx_result; 164 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 165 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 166 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 167 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 168 169 /** 170 * enum ieee80211_packet_rx_flags - packet RX flags 171 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 172 * (incl. multicast frames) 173 * @IEEE80211_RX_FRAGMENTED: fragmented frame 174 * @IEEE80211_RX_AMSDU: a-MSDU packet 175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 177 * 178 * These are per-frame flags that are attached to a frame in the 179 * @rx_flags field of &struct ieee80211_rx_status. 180 */ 181 enum ieee80211_packet_rx_flags { 182 IEEE80211_RX_RA_MATCH = BIT(1), 183 IEEE80211_RX_FRAGMENTED = BIT(2), 184 IEEE80211_RX_AMSDU = BIT(3), 185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 187 }; 188 189 /** 190 * enum ieee80211_rx_flags - RX data flags 191 * 192 * @IEEE80211_RX_CMNTR: received on cooked monitor already 193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 194 * to cfg80211_report_obss_beacon(). 195 * 196 * These flags are used across handling multiple interfaces 197 * for a single frame. 198 */ 199 enum ieee80211_rx_flags { 200 IEEE80211_RX_CMNTR = BIT(0), 201 IEEE80211_RX_BEACON_REPORTED = BIT(1), 202 }; 203 204 struct ieee80211_rx_data { 205 struct sk_buff *skb; 206 struct ieee80211_local *local; 207 struct ieee80211_sub_if_data *sdata; 208 struct sta_info *sta; 209 struct ieee80211_key *key; 210 211 unsigned int flags; 212 213 /* 214 * Index into sequence numbers array, 0..16 215 * since the last (16) is used for non-QoS, 216 * will be 16 on non-QoS frames. 217 */ 218 int seqno_idx; 219 220 /* 221 * Index into the security IV/PN arrays, 0..16 222 * since the last (16) is used for CCMP-encrypted 223 * management frames, will be set to 16 on mgmt 224 * frames and 0 on non-QoS frames. 225 */ 226 int security_idx; 227 228 u32 tkip_iv32; 229 u16 tkip_iv16; 230 }; 231 232 struct beacon_data { 233 u8 *head, *tail; 234 int head_len, tail_len; 235 struct ieee80211_meshconf_ie *meshconf; 236 struct rcu_head rcu_head; 237 }; 238 239 struct probe_resp { 240 struct rcu_head rcu_head; 241 int len; 242 u8 data[0]; 243 }; 244 245 struct ps_data { 246 /* yes, this looks ugly, but guarantees that we can later use 247 * bitmap_empty :) 248 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 249 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 250 __aligned(__alignof__(unsigned long)); 251 struct sk_buff_head bc_buf; 252 atomic_t num_sta_ps; /* number of stations in PS mode */ 253 int dtim_count; 254 bool dtim_bc_mc; 255 }; 256 257 struct ieee80211_if_ap { 258 struct beacon_data __rcu *beacon; 259 struct probe_resp __rcu *probe_resp; 260 261 /* to be used after channel switch. */ 262 struct cfg80211_beacon_data *next_beacon; 263 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 264 265 struct ps_data ps; 266 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 267 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 268 driver_smps_mode; /* smps mode request */ 269 270 struct work_struct request_smps_work; 271 }; 272 273 struct ieee80211_if_wds { 274 struct sta_info *sta; 275 u8 remote_addr[ETH_ALEN]; 276 }; 277 278 struct ieee80211_if_vlan { 279 struct list_head list; /* write-protected with RTNL and local->mtx */ 280 281 /* used for all tx if the VLAN is configured to 4-addr mode */ 282 struct sta_info __rcu *sta; 283 }; 284 285 struct mesh_stats { 286 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 287 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 288 __u32 fwded_frames; /* Mesh total forwarded frames */ 289 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 290 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 291 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 292 }; 293 294 #define PREQ_Q_F_START 0x1 295 #define PREQ_Q_F_REFRESH 0x2 296 struct mesh_preq_queue { 297 struct list_head list; 298 u8 dst[ETH_ALEN]; 299 u8 flags; 300 }; 301 302 #if HZ/100 == 0 303 #define IEEE80211_ROC_MIN_LEFT 1 304 #else 305 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 306 #endif 307 308 struct ieee80211_roc_work { 309 struct list_head list; 310 struct list_head dependents; 311 312 struct delayed_work work; 313 314 struct ieee80211_sub_if_data *sdata; 315 316 struct ieee80211_channel *chan; 317 318 bool started, abort, hw_begun, notified; 319 bool to_be_freed; 320 bool on_channel; 321 322 unsigned long hw_start_time; 323 324 u32 duration, req_duration; 325 struct sk_buff *frame; 326 u64 cookie, mgmt_tx_cookie; 327 enum ieee80211_roc_type type; 328 }; 329 330 /* flags used in struct ieee80211_if_managed.flags */ 331 enum ieee80211_sta_flags { 332 IEEE80211_STA_CONNECTION_POLL = BIT(1), 333 IEEE80211_STA_CONTROL_PORT = BIT(2), 334 IEEE80211_STA_DISABLE_HT = BIT(4), 335 IEEE80211_STA_CSA_RECEIVED = BIT(5), 336 IEEE80211_STA_MFP_ENABLED = BIT(6), 337 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 338 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 339 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 340 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 341 IEEE80211_STA_DISABLE_VHT = BIT(11), 342 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 343 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 344 IEEE80211_STA_DISABLE_WMM = BIT(14), 345 }; 346 347 struct ieee80211_mgd_auth_data { 348 struct cfg80211_bss *bss; 349 unsigned long timeout; 350 int tries; 351 u16 algorithm, expected_transaction; 352 353 u8 key[WLAN_KEY_LEN_WEP104]; 354 u8 key_len, key_idx; 355 bool done; 356 bool timeout_started; 357 358 u16 sae_trans, sae_status; 359 size_t data_len; 360 u8 data[]; 361 }; 362 363 struct ieee80211_mgd_assoc_data { 364 struct cfg80211_bss *bss; 365 const u8 *supp_rates; 366 367 unsigned long timeout; 368 int tries; 369 370 u16 capability; 371 u8 prev_bssid[ETH_ALEN]; 372 u8 ssid[IEEE80211_MAX_SSID_LEN]; 373 u8 ssid_len; 374 u8 supp_rates_len; 375 bool wmm, uapsd; 376 bool need_beacon; 377 bool synced; 378 bool timeout_started; 379 380 u8 ap_ht_param; 381 382 struct ieee80211_vht_cap ap_vht_cap; 383 384 size_t ie_len; 385 u8 ie[]; 386 }; 387 388 struct ieee80211_if_managed { 389 struct timer_list timer; 390 struct timer_list conn_mon_timer; 391 struct timer_list bcn_mon_timer; 392 struct timer_list chswitch_timer; 393 struct work_struct monitor_work; 394 struct work_struct chswitch_work; 395 struct work_struct beacon_connection_loss_work; 396 struct work_struct csa_connection_drop_work; 397 398 unsigned long beacon_timeout; 399 unsigned long probe_timeout; 400 int probe_send_count; 401 bool nullfunc_failed; 402 bool connection_loss; 403 404 struct cfg80211_bss *associated; 405 struct ieee80211_mgd_auth_data *auth_data; 406 struct ieee80211_mgd_assoc_data *assoc_data; 407 408 u8 bssid[ETH_ALEN]; 409 410 u16 aid; 411 412 bool powersave; /* powersave requested for this iface */ 413 bool broken_ap; /* AP is broken -- turn off powersave */ 414 bool have_beacon; 415 u8 dtim_period; 416 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 417 driver_smps_mode; /* smps mode request */ 418 419 struct work_struct request_smps_work; 420 421 unsigned int flags; 422 423 bool beacon_crc_valid; 424 u32 beacon_crc; 425 426 bool status_acked; 427 bool status_received; 428 __le16 status_fc; 429 430 enum { 431 IEEE80211_MFP_DISABLED, 432 IEEE80211_MFP_OPTIONAL, 433 IEEE80211_MFP_REQUIRED 434 } mfp; /* management frame protection */ 435 436 /* 437 * Bitmask of enabled u-apsd queues, 438 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 439 * to take effect. 440 */ 441 unsigned int uapsd_queues; 442 443 /* 444 * Maximum number of buffered frames AP can deliver during a 445 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 446 * Needs a new association to take effect. 447 */ 448 unsigned int uapsd_max_sp_len; 449 450 int wmm_last_param_set; 451 452 u8 use_4addr; 453 454 s16 p2p_noa_index; 455 456 /* Signal strength from the last Beacon frame in the current BSS. */ 457 int last_beacon_signal; 458 459 /* 460 * Weighted average of the signal strength from Beacon frames in the 461 * current BSS. This is in units of 1/16 of the signal unit to maintain 462 * accuracy and to speed up calculations, i.e., the value need to be 463 * divided by 16 to get the actual value. 464 */ 465 int ave_beacon_signal; 466 467 /* 468 * Number of Beacon frames used in ave_beacon_signal. This can be used 469 * to avoid generating less reliable cqm events that would be based 470 * only on couple of received frames. 471 */ 472 unsigned int count_beacon_signal; 473 474 /* 475 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 476 * that triggered a cqm event. 0 indicates that no event has been 477 * generated for the current association. 478 */ 479 int last_cqm_event_signal; 480 481 /* 482 * State variables for keeping track of RSSI of the AP currently 483 * connected to and informing driver when RSSI has gone 484 * below/above a certain threshold. 485 */ 486 int rssi_min_thold, rssi_max_thold; 487 int last_ave_beacon_signal; 488 489 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 490 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 491 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 492 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 493 }; 494 495 struct ieee80211_if_ibss { 496 struct timer_list timer; 497 struct work_struct csa_connection_drop_work; 498 499 unsigned long last_scan_completed; 500 501 u32 basic_rates; 502 503 bool fixed_bssid; 504 bool fixed_channel; 505 bool privacy; 506 507 bool control_port; 508 bool userspace_handles_dfs; 509 510 u8 bssid[ETH_ALEN] __aligned(2); 511 u8 ssid[IEEE80211_MAX_SSID_LEN]; 512 u8 ssid_len, ie_len; 513 u8 *ie; 514 struct cfg80211_chan_def chandef; 515 516 unsigned long ibss_join_req; 517 /* probe response/beacon for IBSS */ 518 struct beacon_data __rcu *presp; 519 520 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 521 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 522 523 spinlock_t incomplete_lock; 524 struct list_head incomplete_stations; 525 526 enum { 527 IEEE80211_IBSS_MLME_SEARCH, 528 IEEE80211_IBSS_MLME_JOINED, 529 } state; 530 }; 531 532 /** 533 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 534 * 535 * these declarations define the interface, which enables 536 * vendor-specific mesh synchronization 537 * 538 */ 539 struct ieee802_11_elems; 540 struct ieee80211_mesh_sync_ops { 541 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 542 u16 stype, 543 struct ieee80211_mgmt *mgmt, 544 struct ieee802_11_elems *elems, 545 struct ieee80211_rx_status *rx_status); 546 547 /* should be called with beacon_data under RCU read lock */ 548 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 549 struct beacon_data *beacon); 550 /* add other framework functions here */ 551 }; 552 553 struct mesh_csa_settings { 554 struct rcu_head rcu_head; 555 struct cfg80211_csa_settings settings; 556 }; 557 558 struct ieee80211_if_mesh { 559 struct timer_list housekeeping_timer; 560 struct timer_list mesh_path_timer; 561 struct timer_list mesh_path_root_timer; 562 563 unsigned long wrkq_flags; 564 unsigned long mbss_changed; 565 566 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 567 size_t mesh_id_len; 568 /* Active Path Selection Protocol Identifier */ 569 u8 mesh_pp_id; 570 /* Active Path Selection Metric Identifier */ 571 u8 mesh_pm_id; 572 /* Congestion Control Mode Identifier */ 573 u8 mesh_cc_id; 574 /* Synchronization Protocol Identifier */ 575 u8 mesh_sp_id; 576 /* Authentication Protocol Identifier */ 577 u8 mesh_auth_id; 578 /* Local mesh Sequence Number */ 579 u32 sn; 580 /* Last used PREQ ID */ 581 u32 preq_id; 582 atomic_t mpaths; 583 /* Timestamp of last SN update */ 584 unsigned long last_sn_update; 585 /* Time when it's ok to send next PERR */ 586 unsigned long next_perr; 587 /* Timestamp of last PREQ sent */ 588 unsigned long last_preq; 589 struct mesh_rmc *rmc; 590 spinlock_t mesh_preq_queue_lock; 591 struct mesh_preq_queue preq_queue; 592 int preq_queue_len; 593 struct mesh_stats mshstats; 594 struct mesh_config mshcfg; 595 atomic_t estab_plinks; 596 u32 mesh_seqnum; 597 bool accepting_plinks; 598 int num_gates; 599 struct beacon_data __rcu *beacon; 600 const u8 *ie; 601 u8 ie_len; 602 enum { 603 IEEE80211_MESH_SEC_NONE = 0x0, 604 IEEE80211_MESH_SEC_AUTHED = 0x1, 605 IEEE80211_MESH_SEC_SECURED = 0x2, 606 } security; 607 bool user_mpm; 608 /* Extensible Synchronization Framework */ 609 const struct ieee80211_mesh_sync_ops *sync_ops; 610 s64 sync_offset_clockdrift_max; 611 spinlock_t sync_offset_lock; 612 bool adjusting_tbtt; 613 /* mesh power save */ 614 enum nl80211_mesh_power_mode nonpeer_pm; 615 int ps_peers_light_sleep; 616 int ps_peers_deep_sleep; 617 struct ps_data ps; 618 /* Channel Switching Support */ 619 struct mesh_csa_settings __rcu *csa; 620 enum { 621 IEEE80211_MESH_CSA_ROLE_NONE, 622 IEEE80211_MESH_CSA_ROLE_INIT, 623 IEEE80211_MESH_CSA_ROLE_REPEATER, 624 } csa_role; 625 u8 chsw_ttl; 626 u16 pre_value; 627 628 /* offset from skb->data while building IE */ 629 int meshconf_offset; 630 }; 631 632 #ifdef CONFIG_MAC80211_MESH 633 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 634 do { (msh)->mshstats.name++; } while (0) 635 #else 636 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 637 do { } while (0) 638 #endif 639 640 /** 641 * enum ieee80211_sub_if_data_flags - virtual interface flags 642 * 643 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 644 * @IEEE80211_SDATA_PROMISC: interface is promisc 645 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 646 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 647 * associated stations and deliver multicast frames both 648 * back to wireless media and to the local net stack. 649 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 650 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 651 */ 652 enum ieee80211_sub_if_data_flags { 653 IEEE80211_SDATA_ALLMULTI = BIT(0), 654 IEEE80211_SDATA_PROMISC = BIT(1), 655 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 656 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 657 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 658 IEEE80211_SDATA_IN_DRIVER = BIT(5), 659 }; 660 661 /** 662 * enum ieee80211_sdata_state_bits - virtual interface state bits 663 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 664 * mirrors netif_running() but is separate for interface type 665 * change handling while the interface is up 666 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 667 * mode, so queues are stopped 668 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 669 * to offchannel, reset when offchannel returns 670 */ 671 enum ieee80211_sdata_state_bits { 672 SDATA_STATE_RUNNING, 673 SDATA_STATE_OFFCHANNEL, 674 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 675 }; 676 677 /** 678 * enum ieee80211_chanctx_mode - channel context configuration mode 679 * 680 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 681 * multiple interfaces 682 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 683 * only by a single interface. This can be used for example for 684 * non-fixed channel IBSS. 685 */ 686 enum ieee80211_chanctx_mode { 687 IEEE80211_CHANCTX_SHARED, 688 IEEE80211_CHANCTX_EXCLUSIVE 689 }; 690 691 struct ieee80211_chanctx { 692 struct list_head list; 693 struct rcu_head rcu_head; 694 695 struct list_head assigned_vifs; 696 struct list_head reserved_vifs; 697 698 enum ieee80211_chanctx_mode mode; 699 bool driver_present; 700 701 struct ieee80211_chanctx_conf conf; 702 }; 703 704 struct mac80211_qos_map { 705 struct cfg80211_qos_map qos_map; 706 struct rcu_head rcu_head; 707 }; 708 709 struct ieee80211_sub_if_data { 710 struct list_head list; 711 712 struct wireless_dev wdev; 713 714 /* keys */ 715 struct list_head key_list; 716 717 /* count for keys needing tailroom space allocation */ 718 int crypto_tx_tailroom_needed_cnt; 719 int crypto_tx_tailroom_pending_dec; 720 struct delayed_work dec_tailroom_needed_wk; 721 722 struct net_device *dev; 723 struct ieee80211_local *local; 724 725 unsigned int flags; 726 727 unsigned long state; 728 729 int drop_unencrypted; 730 731 char name[IFNAMSIZ]; 732 733 /* Fragment table for host-based reassembly */ 734 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 735 unsigned int fragment_next; 736 737 /* TID bitmap for NoAck policy */ 738 u16 noack_map; 739 740 /* bit field of ACM bits (BIT(802.1D tag)) */ 741 u8 wmm_acm; 742 743 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 744 struct ieee80211_key __rcu *default_unicast_key; 745 struct ieee80211_key __rcu *default_multicast_key; 746 struct ieee80211_key __rcu *default_mgmt_key; 747 748 u16 sequence_number; 749 __be16 control_port_protocol; 750 bool control_port_no_encrypt; 751 int encrypt_headroom; 752 753 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 754 struct mac80211_qos_map __rcu *qos_map; 755 756 struct work_struct csa_finalize_work; 757 u16 csa_counter_offset_beacon[IEEE80211_MAX_CSA_COUNTERS_NUM]; 758 u16 csa_counter_offset_presp[IEEE80211_MAX_CSA_COUNTERS_NUM]; 759 bool csa_radar_required; 760 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 761 struct cfg80211_chan_def csa_chandef; 762 763 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 764 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 765 766 /* context reservation -- protected with chanctx_mtx */ 767 struct ieee80211_chanctx *reserved_chanctx; 768 struct cfg80211_chan_def reserved_chandef; 769 bool reserved_radar_required; 770 u8 csa_current_counter; 771 772 /* used to reconfigure hardware SM PS */ 773 struct work_struct recalc_smps; 774 775 struct work_struct work; 776 struct sk_buff_head skb_queue; 777 778 u8 needed_rx_chains; 779 enum ieee80211_smps_mode smps_mode; 780 781 int user_power_level; /* in dBm */ 782 int ap_power_level; /* in dBm */ 783 784 bool radar_required; 785 struct delayed_work dfs_cac_timer_work; 786 787 /* 788 * AP this belongs to: self in AP mode and 789 * corresponding AP in VLAN mode, NULL for 790 * all others (might be needed later in IBSS) 791 */ 792 struct ieee80211_if_ap *bss; 793 794 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 795 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 796 797 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 798 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 799 800 union { 801 struct ieee80211_if_ap ap; 802 struct ieee80211_if_wds wds; 803 struct ieee80211_if_vlan vlan; 804 struct ieee80211_if_managed mgd; 805 struct ieee80211_if_ibss ibss; 806 struct ieee80211_if_mesh mesh; 807 u32 mntr_flags; 808 } u; 809 810 #ifdef CONFIG_MAC80211_DEBUGFS 811 struct { 812 struct dentry *subdir_stations; 813 struct dentry *default_unicast_key; 814 struct dentry *default_multicast_key; 815 struct dentry *default_mgmt_key; 816 } debugfs; 817 #endif 818 819 /* must be last, dynamically sized area in this! */ 820 struct ieee80211_vif vif; 821 }; 822 823 static inline 824 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 825 { 826 return container_of(p, struct ieee80211_sub_if_data, vif); 827 } 828 829 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 830 __acquires(&sdata->wdev.mtx) 831 { 832 mutex_lock(&sdata->wdev.mtx); 833 __acquire(&sdata->wdev.mtx); 834 } 835 836 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 837 __releases(&sdata->wdev.mtx) 838 { 839 mutex_unlock(&sdata->wdev.mtx); 840 __release(&sdata->wdev.mtx); 841 } 842 843 #define sdata_dereference(p, sdata) \ 844 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 845 846 static inline void 847 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 848 { 849 lockdep_assert_held(&sdata->wdev.mtx); 850 } 851 852 static inline enum ieee80211_band 853 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 854 { 855 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 856 struct ieee80211_chanctx_conf *chanctx_conf; 857 858 rcu_read_lock(); 859 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 860 if (!WARN_ON(!chanctx_conf)) 861 band = chanctx_conf->def.chan->band; 862 rcu_read_unlock(); 863 864 return band; 865 } 866 867 static inline int 868 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 869 { 870 switch (chandef->width) { 871 case NL80211_CHAN_WIDTH_5: 872 return 2; 873 case NL80211_CHAN_WIDTH_10: 874 return 1; 875 default: 876 return 0; 877 } 878 } 879 880 static inline int 881 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 882 { 883 struct ieee80211_chanctx_conf *chanctx_conf; 884 int shift = 0; 885 886 rcu_read_lock(); 887 chanctx_conf = rcu_dereference(vif->chanctx_conf); 888 if (chanctx_conf) 889 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 890 rcu_read_unlock(); 891 892 return shift; 893 } 894 895 enum sdata_queue_type { 896 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 897 IEEE80211_SDATA_QUEUE_AGG_START = 1, 898 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 899 }; 900 901 enum { 902 IEEE80211_RX_MSG = 1, 903 IEEE80211_TX_STATUS_MSG = 2, 904 }; 905 906 enum queue_stop_reason { 907 IEEE80211_QUEUE_STOP_REASON_DRIVER, 908 IEEE80211_QUEUE_STOP_REASON_PS, 909 IEEE80211_QUEUE_STOP_REASON_CSA, 910 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 911 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 912 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 913 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 914 IEEE80211_QUEUE_STOP_REASON_FLUSH, 915 }; 916 917 #ifdef CONFIG_MAC80211_LEDS 918 struct tpt_led_trigger { 919 struct led_trigger trig; 920 char name[32]; 921 const struct ieee80211_tpt_blink *blink_table; 922 unsigned int blink_table_len; 923 struct timer_list timer; 924 unsigned long prev_traffic; 925 unsigned long tx_bytes, rx_bytes; 926 unsigned int active, want; 927 bool running; 928 }; 929 #endif 930 931 /* 932 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 933 * 934 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 935 * certain latency range (in Milliseconds). Each station that uses these 936 * ranges will have bins to count the amount of frames received in that range. 937 * The user can configure the ranges via debugfs. 938 * If ranges is NULL then Tx latency statistics bins are disabled for all 939 * stations. 940 * 941 * @n_ranges: number of ranges that are taken in account 942 * @ranges: the ranges that the user requested or NULL if disabled. 943 */ 944 struct ieee80211_tx_latency_bin_ranges { 945 int n_ranges; 946 u32 ranges[]; 947 }; 948 949 /** 950 * mac80211 scan flags - currently active scan mode 951 * 952 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 953 * well be on the operating channel 954 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 955 * determine if we are on the operating channel or not 956 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 957 * channel. This should not interrupt normal traffic. 958 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 959 * that the scan completed. 960 * @SCAN_ABORTED: Set for our scan work function when the driver reported 961 * a scan complete for an aborted scan. 962 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 963 * cancelled. 964 */ 965 enum { 966 SCAN_SW_SCANNING, 967 SCAN_HW_SCANNING, 968 SCAN_ONCHANNEL_SCANNING, 969 SCAN_COMPLETED, 970 SCAN_ABORTED, 971 SCAN_HW_CANCELLED, 972 }; 973 974 /** 975 * enum mac80211_scan_state - scan state machine states 976 * 977 * @SCAN_DECISION: Main entry point to the scan state machine, this state 978 * determines if we should keep on scanning or switch back to the 979 * operating channel 980 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 981 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 982 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 983 * send out data 984 * @SCAN_RESUME: Resume the scan and scan the next channel 985 * @SCAN_ABORT: Abort the scan and go back to operating channel 986 */ 987 enum mac80211_scan_state { 988 SCAN_DECISION, 989 SCAN_SET_CHANNEL, 990 SCAN_SEND_PROBE, 991 SCAN_SUSPEND, 992 SCAN_RESUME, 993 SCAN_ABORT, 994 }; 995 996 struct ieee80211_local { 997 /* embed the driver visible part. 998 * don't cast (use the static inlines below), but we keep 999 * it first anyway so they become a no-op */ 1000 struct ieee80211_hw hw; 1001 1002 const struct ieee80211_ops *ops; 1003 1004 /* 1005 * private workqueue to mac80211. mac80211 makes this accessible 1006 * via ieee80211_queue_work() 1007 */ 1008 struct workqueue_struct *workqueue; 1009 1010 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1011 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1012 spinlock_t queue_stop_reason_lock; 1013 1014 int open_count; 1015 int monitors, cooked_mntrs; 1016 /* number of interfaces with corresponding FIF_ flags */ 1017 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1018 fif_probe_req; 1019 int probe_req_reg; 1020 unsigned int filter_flags; /* FIF_* */ 1021 1022 bool wiphy_ciphers_allocated; 1023 1024 bool use_chanctx; 1025 1026 /* protects the aggregated multicast list and filter calls */ 1027 spinlock_t filter_lock; 1028 1029 /* used for uploading changed mc list */ 1030 struct work_struct reconfig_filter; 1031 1032 /* aggregated multicast list */ 1033 struct netdev_hw_addr_list mc_list; 1034 1035 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1036 1037 /* 1038 * suspended is true if we finished all the suspend _and_ we have 1039 * not yet come up from resume. This is to be used by mac80211 1040 * to ensure driver sanity during suspend and mac80211's own 1041 * sanity. It can eventually be used for WoW as well. 1042 */ 1043 bool suspended; 1044 1045 /* 1046 * Resuming is true while suspended, but when we're reprogramming the 1047 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1048 * again even though some other parts of the stack are still suspended 1049 * and we still drop received frames to avoid waking the stack. 1050 */ 1051 bool resuming; 1052 1053 /* 1054 * quiescing is true during the suspend process _only_ to 1055 * ease timer cancelling etc. 1056 */ 1057 bool quiescing; 1058 1059 /* device is started */ 1060 bool started; 1061 1062 /* device is during a HW reconfig */ 1063 bool in_reconfig; 1064 1065 /* wowlan is enabled -- don't reconfig on resume */ 1066 bool wowlan; 1067 1068 /* DFS/radar detection is enabled */ 1069 bool radar_detect_enabled; 1070 struct work_struct radar_detected_work; 1071 1072 /* number of RX chains the hardware has */ 1073 u8 rx_chains; 1074 1075 int tx_headroom; /* required headroom for hardware/radiotap */ 1076 1077 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1078 * added to skb_queue will be processed, but frames in 1079 * skb_queue_unreliable may be dropped if the total length of these 1080 * queues increases over the limit. */ 1081 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1082 struct tasklet_struct tasklet; 1083 struct sk_buff_head skb_queue; 1084 struct sk_buff_head skb_queue_unreliable; 1085 1086 spinlock_t rx_path_lock; 1087 1088 /* Station data */ 1089 /* 1090 * The mutex only protects the list, hash table and 1091 * counter, reads are done with RCU. 1092 */ 1093 struct mutex sta_mtx; 1094 spinlock_t tim_lock; 1095 unsigned long num_sta; 1096 struct list_head sta_list; 1097 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1098 struct timer_list sta_cleanup; 1099 int sta_generation; 1100 1101 /* 1102 * Tx latency statistics parameters for all stations. 1103 * Can enable via debugfs (NULL when disabled). 1104 */ 1105 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1106 1107 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1108 struct tasklet_struct tx_pending_tasklet; 1109 1110 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1111 1112 /* number of interfaces with corresponding IFF_ flags */ 1113 atomic_t iff_allmultis, iff_promiscs; 1114 1115 struct rate_control_ref *rate_ctrl; 1116 1117 struct crypto_cipher *wep_tx_tfm; 1118 struct crypto_cipher *wep_rx_tfm; 1119 u32 wep_iv; 1120 1121 /* see iface.c */ 1122 struct list_head interfaces; 1123 struct mutex iflist_mtx; 1124 1125 /* 1126 * Key mutex, protects sdata's key_list and sta_info's 1127 * key pointers (write access, they're RCU.) 1128 */ 1129 struct mutex key_mtx; 1130 1131 /* mutex for scan and work locking */ 1132 struct mutex mtx; 1133 1134 /* Scanning and BSS list */ 1135 unsigned long scanning; 1136 struct cfg80211_ssid scan_ssid; 1137 struct cfg80211_scan_request *int_scan_req; 1138 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1139 struct cfg80211_chan_def scan_chandef; 1140 enum ieee80211_band hw_scan_band; 1141 int scan_channel_idx; 1142 int scan_ies_len; 1143 int hw_scan_ies_bufsize; 1144 1145 struct work_struct sched_scan_stopped_work; 1146 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1147 struct cfg80211_sched_scan_request *sched_scan_req; 1148 1149 unsigned long leave_oper_channel_time; 1150 enum mac80211_scan_state next_scan_state; 1151 struct delayed_work scan_work; 1152 struct ieee80211_sub_if_data __rcu *scan_sdata; 1153 /* For backward compatibility only -- do not use */ 1154 struct cfg80211_chan_def _oper_chandef; 1155 1156 /* Temporary remain-on-channel for off-channel operations */ 1157 struct ieee80211_channel *tmp_channel; 1158 1159 /* channel contexts */ 1160 struct list_head chanctx_list; 1161 struct mutex chanctx_mtx; 1162 1163 /* SNMP counters */ 1164 /* dot11CountersTable */ 1165 u32 dot11TransmittedFragmentCount; 1166 u32 dot11MulticastTransmittedFrameCount; 1167 u32 dot11FailedCount; 1168 u32 dot11RetryCount; 1169 u32 dot11MultipleRetryCount; 1170 u32 dot11FrameDuplicateCount; 1171 u32 dot11ReceivedFragmentCount; 1172 u32 dot11MulticastReceivedFrameCount; 1173 u32 dot11TransmittedFrameCount; 1174 1175 #ifdef CONFIG_MAC80211_LEDS 1176 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1177 struct tpt_led_trigger *tpt_led_trigger; 1178 char tx_led_name[32], rx_led_name[32], 1179 assoc_led_name[32], radio_led_name[32]; 1180 #endif 1181 1182 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1183 /* TX/RX handler statistics */ 1184 unsigned int tx_handlers_drop; 1185 unsigned int tx_handlers_queued; 1186 unsigned int tx_handlers_drop_unencrypted; 1187 unsigned int tx_handlers_drop_fragment; 1188 unsigned int tx_handlers_drop_wep; 1189 unsigned int tx_handlers_drop_not_assoc; 1190 unsigned int tx_handlers_drop_unauth_port; 1191 unsigned int rx_handlers_drop; 1192 unsigned int rx_handlers_queued; 1193 unsigned int rx_handlers_drop_nullfunc; 1194 unsigned int rx_handlers_drop_defrag; 1195 unsigned int rx_handlers_drop_short; 1196 unsigned int tx_expand_skb_head; 1197 unsigned int tx_expand_skb_head_cloned; 1198 unsigned int rx_expand_skb_head; 1199 unsigned int rx_expand_skb_head2; 1200 unsigned int rx_handlers_fragments; 1201 unsigned int tx_status_drop; 1202 #define I802_DEBUG_INC(c) (c)++ 1203 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1204 #define I802_DEBUG_INC(c) do { } while (0) 1205 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1206 1207 1208 int total_ps_buffered; /* total number of all buffered unicast and 1209 * multicast packets for power saving stations 1210 */ 1211 1212 bool pspolling; 1213 bool offchannel_ps_enabled; 1214 /* 1215 * PS can only be enabled when we have exactly one managed 1216 * interface (and monitors) in PS, this then points there. 1217 */ 1218 struct ieee80211_sub_if_data *ps_sdata; 1219 struct work_struct dynamic_ps_enable_work; 1220 struct work_struct dynamic_ps_disable_work; 1221 struct timer_list dynamic_ps_timer; 1222 struct notifier_block network_latency_notifier; 1223 struct notifier_block ifa_notifier; 1224 struct notifier_block ifa6_notifier; 1225 1226 /* 1227 * The dynamic ps timeout configured from user space via WEXT - 1228 * this will override whatever chosen by mac80211 internally. 1229 */ 1230 int dynamic_ps_forced_timeout; 1231 1232 int user_power_level; /* in dBm, for all interfaces */ 1233 1234 enum ieee80211_smps_mode smps_mode; 1235 1236 struct work_struct restart_work; 1237 1238 #ifdef CONFIG_MAC80211_DEBUGFS 1239 struct local_debugfsdentries { 1240 struct dentry *rcdir; 1241 struct dentry *keys; 1242 } debugfs; 1243 #endif 1244 1245 /* 1246 * Remain-on-channel support 1247 */ 1248 struct list_head roc_list; 1249 struct work_struct hw_roc_start, hw_roc_done; 1250 unsigned long hw_roc_start_time; 1251 u64 roc_cookie_counter; 1252 1253 struct idr ack_status_frames; 1254 spinlock_t ack_status_lock; 1255 1256 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1257 1258 struct napi_struct *napi; 1259 1260 /* virtual monitor interface */ 1261 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1262 struct cfg80211_chan_def monitor_chandef; 1263 }; 1264 1265 static inline struct ieee80211_sub_if_data * 1266 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1267 { 1268 return netdev_priv(dev); 1269 } 1270 1271 static inline struct ieee80211_sub_if_data * 1272 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1273 { 1274 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1275 } 1276 1277 /* this struct represents 802.11n's RA/TID combination */ 1278 struct ieee80211_ra_tid { 1279 u8 ra[ETH_ALEN]; 1280 u16 tid; 1281 }; 1282 1283 /* this struct holds the value parsing from channel switch IE */ 1284 struct ieee80211_csa_ie { 1285 struct cfg80211_chan_def chandef; 1286 u8 mode; 1287 u8 count; 1288 u8 ttl; 1289 u16 pre_value; 1290 }; 1291 1292 /* Parsed Information Elements */ 1293 struct ieee802_11_elems { 1294 const u8 *ie_start; 1295 size_t total_len; 1296 1297 /* pointers to IEs */ 1298 const u8 *ssid; 1299 const u8 *supp_rates; 1300 const u8 *ds_params; 1301 const struct ieee80211_tim_ie *tim; 1302 const u8 *challenge; 1303 const u8 *rsn; 1304 const u8 *erp_info; 1305 const u8 *ext_supp_rates; 1306 const u8 *wmm_info; 1307 const u8 *wmm_param; 1308 const struct ieee80211_ht_cap *ht_cap_elem; 1309 const struct ieee80211_ht_operation *ht_operation; 1310 const struct ieee80211_vht_cap *vht_cap_elem; 1311 const struct ieee80211_vht_operation *vht_operation; 1312 const struct ieee80211_meshconf_ie *mesh_config; 1313 const u8 *mesh_id; 1314 const u8 *peering; 1315 const __le16 *awake_window; 1316 const u8 *preq; 1317 const u8 *prep; 1318 const u8 *perr; 1319 const struct ieee80211_rann_ie *rann; 1320 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1321 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1322 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1323 const u8 *country_elem; 1324 const u8 *pwr_constr_elem; 1325 const struct ieee80211_timeout_interval_ie *timeout_int; 1326 const u8 *opmode_notif; 1327 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1328 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1329 1330 /* length of them, respectively */ 1331 u8 ssid_len; 1332 u8 supp_rates_len; 1333 u8 tim_len; 1334 u8 challenge_len; 1335 u8 rsn_len; 1336 u8 ext_supp_rates_len; 1337 u8 wmm_info_len; 1338 u8 wmm_param_len; 1339 u8 mesh_id_len; 1340 u8 peering_len; 1341 u8 preq_len; 1342 u8 prep_len; 1343 u8 perr_len; 1344 u8 country_elem_len; 1345 1346 /* whether a parse error occurred while retrieving these elements */ 1347 bool parse_error; 1348 }; 1349 1350 static inline struct ieee80211_local *hw_to_local( 1351 struct ieee80211_hw *hw) 1352 { 1353 return container_of(hw, struct ieee80211_local, hw); 1354 } 1355 1356 1357 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1358 { 1359 return ether_addr_equal(raddr, addr) || 1360 is_broadcast_ether_addr(raddr); 1361 } 1362 1363 static inline bool 1364 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1365 { 1366 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1367 status->flag & RX_FLAG_MACTIME_END); 1368 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1369 } 1370 1371 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1372 struct ieee80211_rx_status *status, 1373 unsigned int mpdu_len, 1374 unsigned int mpdu_offset); 1375 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1376 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1377 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1378 u32 changed); 1379 void ieee80211_configure_filter(struct ieee80211_local *local); 1380 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1381 1382 /* STA code */ 1383 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1384 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1385 struct cfg80211_auth_request *req); 1386 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1387 struct cfg80211_assoc_request *req); 1388 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1389 struct cfg80211_deauth_request *req); 1390 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1391 struct cfg80211_disassoc_request *req); 1392 void ieee80211_send_pspoll(struct ieee80211_local *local, 1393 struct ieee80211_sub_if_data *sdata); 1394 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1395 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1396 int ieee80211_max_network_latency(struct notifier_block *nb, 1397 unsigned long data, void *dummy); 1398 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1399 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1400 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1401 struct sk_buff *skb); 1402 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1403 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1404 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1405 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1406 __le16 fc, bool acked); 1407 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1408 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1409 1410 /* IBSS code */ 1411 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1412 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1413 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1414 const u8 *bssid, const u8 *addr, u32 supp_rates); 1415 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1416 struct cfg80211_ibss_params *params); 1417 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1418 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1419 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1420 struct sk_buff *skb); 1421 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1422 struct cfg80211_csa_settings *csa_settings); 1423 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1424 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1425 1426 /* mesh code */ 1427 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1428 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1429 struct sk_buff *skb); 1430 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1431 struct cfg80211_csa_settings *csa_settings); 1432 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1433 1434 /* scan/BSS handling */ 1435 void ieee80211_scan_work(struct work_struct *work); 1436 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1437 const u8 *ssid, u8 ssid_len, 1438 struct ieee80211_channel *chan, 1439 enum nl80211_bss_scan_width scan_width); 1440 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1441 struct cfg80211_scan_request *req); 1442 void ieee80211_scan_cancel(struct ieee80211_local *local); 1443 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1444 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1445 1446 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1447 struct ieee80211_bss * 1448 ieee80211_bss_info_update(struct ieee80211_local *local, 1449 struct ieee80211_rx_status *rx_status, 1450 struct ieee80211_mgmt *mgmt, 1451 size_t len, 1452 struct ieee802_11_elems *elems, 1453 struct ieee80211_channel *channel); 1454 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1455 struct ieee80211_bss *bss); 1456 1457 /* scheduled scan handling */ 1458 int 1459 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1460 struct cfg80211_sched_scan_request *req); 1461 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1462 struct cfg80211_sched_scan_request *req); 1463 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1464 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1465 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1466 1467 /* off-channel helpers */ 1468 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1469 void ieee80211_offchannel_return(struct ieee80211_local *local); 1470 void ieee80211_roc_setup(struct ieee80211_local *local); 1471 void ieee80211_start_next_roc(struct ieee80211_local *local); 1472 void ieee80211_roc_purge(struct ieee80211_local *local, 1473 struct ieee80211_sub_if_data *sdata); 1474 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1475 void ieee80211_sw_roc_work(struct work_struct *work); 1476 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1477 1478 /* channel switch handling */ 1479 bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local); 1480 void ieee80211_csa_finalize_work(struct work_struct *work); 1481 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1482 struct cfg80211_csa_settings *params); 1483 1484 /* interface handling */ 1485 int ieee80211_iface_init(void); 1486 void ieee80211_iface_exit(void); 1487 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1488 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1489 struct vif_params *params); 1490 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1491 enum nl80211_iftype type); 1492 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1493 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1494 u32 ieee80211_idle_off(struct ieee80211_local *local); 1495 void ieee80211_recalc_idle(struct ieee80211_local *local); 1496 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1497 const int offset); 1498 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1499 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1500 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1501 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1502 1503 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1504 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1505 1506 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1507 { 1508 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1509 } 1510 1511 /* tx handling */ 1512 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1513 void ieee80211_tx_pending(unsigned long data); 1514 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1515 struct net_device *dev); 1516 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1517 struct net_device *dev); 1518 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1519 struct sk_buff_head *skbs); 1520 1521 /* HT */ 1522 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1523 struct ieee80211_sta_ht_cap *ht_cap); 1524 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1525 struct ieee80211_supported_band *sband, 1526 const struct ieee80211_ht_cap *ht_cap_ie, 1527 struct sta_info *sta); 1528 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1529 const u8 *da, u16 tid, 1530 u16 initiator, u16 reason_code); 1531 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1532 enum ieee80211_smps_mode smps, const u8 *da, 1533 const u8 *bssid); 1534 void ieee80211_request_smps_ap_work(struct work_struct *work); 1535 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1536 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1537 enum ieee80211_smps_mode smps_mode_new); 1538 1539 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1540 u16 initiator, u16 reason, bool stop); 1541 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1542 u16 initiator, u16 reason, bool stop); 1543 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1544 enum ieee80211_agg_stop_reason reason); 1545 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1546 struct sta_info *sta, 1547 struct ieee80211_mgmt *mgmt, size_t len); 1548 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1549 struct sta_info *sta, 1550 struct ieee80211_mgmt *mgmt, 1551 size_t len); 1552 void ieee80211_process_addba_request(struct ieee80211_local *local, 1553 struct sta_info *sta, 1554 struct ieee80211_mgmt *mgmt, 1555 size_t len); 1556 1557 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1558 enum ieee80211_agg_stop_reason reason); 1559 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1560 enum ieee80211_agg_stop_reason reason); 1561 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1562 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1563 void ieee80211_ba_session_work(struct work_struct *work); 1564 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1565 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1566 1567 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1568 1569 /* VHT */ 1570 void 1571 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1572 struct ieee80211_supported_band *sband, 1573 const struct ieee80211_vht_cap *vht_cap_ie, 1574 struct sta_info *sta); 1575 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1576 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1577 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1578 struct sta_info *sta, u8 opmode, 1579 enum ieee80211_band band, bool nss_only); 1580 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1581 struct sta_info *sta, u8 opmode, 1582 enum ieee80211_band band, bool nss_only); 1583 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1584 struct ieee80211_sta_vht_cap *vht_cap); 1585 1586 /* Spectrum management */ 1587 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1588 struct ieee80211_mgmt *mgmt, 1589 size_t len); 1590 /** 1591 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1592 * @sdata: the sdata of the interface which has received the frame 1593 * @elems: parsed 802.11 elements received with the frame 1594 * @beacon: indicates if the frame was a beacon or probe response 1595 * @current_band: indicates the current band 1596 * @sta_flags: contains information about own capabilities and restrictions 1597 * to decide which channel switch announcements can be accepted. Only the 1598 * following subset of &enum ieee80211_sta_flags are evaluated: 1599 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1600 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1601 * %IEEE80211_STA_DISABLE_160MHZ. 1602 * @bssid: the currently connected bssid (for reporting) 1603 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1604 All of them will be filled with if success only. 1605 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1606 */ 1607 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1608 struct ieee802_11_elems *elems, bool beacon, 1609 enum ieee80211_band current_band, 1610 u32 sta_flags, u8 *bssid, 1611 struct ieee80211_csa_ie *csa_ie); 1612 1613 /* Suspend/resume and hw reconfiguration */ 1614 int ieee80211_reconfig(struct ieee80211_local *local); 1615 void ieee80211_stop_device(struct ieee80211_local *local); 1616 1617 int __ieee80211_suspend(struct ieee80211_hw *hw, 1618 struct cfg80211_wowlan *wowlan); 1619 1620 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1621 { 1622 struct ieee80211_local *local = hw_to_local(hw); 1623 1624 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1625 "%s: resume with hardware scan still in progress\n", 1626 wiphy_name(hw->wiphy)); 1627 1628 return ieee80211_reconfig(hw_to_local(hw)); 1629 } 1630 1631 /* utility functions/constants */ 1632 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1633 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1634 enum nl80211_iftype type); 1635 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1636 int rate, int erp, int short_preamble, 1637 int shift); 1638 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1639 struct ieee80211_hdr *hdr, const u8 *tsc, 1640 gfp_t gfp); 1641 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1642 bool bss_notify); 1643 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1644 enum ieee80211_band band); 1645 1646 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1647 struct sk_buff *skb, int tid, 1648 enum ieee80211_band band); 1649 1650 static inline void 1651 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1652 struct sk_buff *skb, int tid, 1653 enum ieee80211_band band) 1654 { 1655 rcu_read_lock(); 1656 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1657 rcu_read_unlock(); 1658 } 1659 1660 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1661 struct sk_buff *skb, int tid) 1662 { 1663 struct ieee80211_chanctx_conf *chanctx_conf; 1664 1665 rcu_read_lock(); 1666 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1667 if (WARN_ON(!chanctx_conf)) { 1668 rcu_read_unlock(); 1669 kfree_skb(skb); 1670 return; 1671 } 1672 1673 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1674 chanctx_conf->def.chan->band); 1675 rcu_read_unlock(); 1676 } 1677 1678 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1679 struct sk_buff *skb) 1680 { 1681 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1682 ieee80211_tx_skb_tid(sdata, skb, 7); 1683 } 1684 1685 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1686 struct ieee802_11_elems *elems, 1687 u64 filter, u32 crc); 1688 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1689 bool action, 1690 struct ieee802_11_elems *elems) 1691 { 1692 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1693 } 1694 1695 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1696 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1697 void ieee80211_dynamic_ps_timer(unsigned long data); 1698 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1699 struct ieee80211_sub_if_data *sdata, 1700 int powersave); 1701 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1702 struct ieee80211_hdr *hdr); 1703 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1704 struct ieee80211_hdr *hdr, bool ack); 1705 1706 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1707 unsigned long queues, 1708 enum queue_stop_reason reason); 1709 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1710 unsigned long queues, 1711 enum queue_stop_reason reason); 1712 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1713 enum queue_stop_reason reason); 1714 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1715 enum queue_stop_reason reason); 1716 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1717 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1718 struct sk_buff *skb); 1719 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1720 struct sk_buff_head *skbs); 1721 void ieee80211_flush_queues(struct ieee80211_local *local, 1722 struct ieee80211_sub_if_data *sdata); 1723 1724 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1725 u16 transaction, u16 auth_alg, u16 status, 1726 const u8 *extra, size_t extra_len, const u8 *bssid, 1727 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1728 u32 tx_flags); 1729 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1730 const u8 *bssid, u16 stype, u16 reason, 1731 bool send_frame, u8 *frame_buf); 1732 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1733 size_t buffer_len, const u8 *ie, size_t ie_len, 1734 enum ieee80211_band band, u32 rate_mask, 1735 struct cfg80211_chan_def *chandef); 1736 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1737 u8 *dst, u32 ratemask, 1738 struct ieee80211_channel *chan, 1739 const u8 *ssid, size_t ssid_len, 1740 const u8 *ie, size_t ie_len, 1741 bool directed); 1742 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1743 const u8 *ssid, size_t ssid_len, 1744 const u8 *ie, size_t ie_len, 1745 u32 ratemask, bool directed, u32 tx_flags, 1746 struct ieee80211_channel *channel, bool scan); 1747 1748 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1749 struct ieee802_11_elems *elems, 1750 enum ieee80211_band band, u32 *basic_rates); 1751 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1752 enum ieee80211_smps_mode smps_mode); 1753 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1754 enum ieee80211_smps_mode smps_mode); 1755 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1756 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1757 1758 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1759 const u8 *ids, int n_ids, size_t offset); 1760 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1761 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1762 u16 cap); 1763 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1764 const struct cfg80211_chan_def *chandef, 1765 u16 prot_mode); 1766 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1767 u32 cap); 1768 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1769 const struct ieee80211_supported_band *sband, 1770 const u8 *srates, int srates_len, u32 *rates); 1771 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1772 struct sk_buff *skb, bool need_basic, 1773 enum ieee80211_band band); 1774 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1775 struct sk_buff *skb, bool need_basic, 1776 enum ieee80211_band band); 1777 1778 /* channel management */ 1779 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1780 const struct ieee80211_ht_operation *ht_oper, 1781 struct cfg80211_chan_def *chandef); 1782 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1783 1784 int __must_check 1785 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1786 const struct cfg80211_chan_def *chandef, 1787 enum ieee80211_chanctx_mode mode); 1788 int __must_check 1789 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 1790 const struct cfg80211_chan_def *chandef, 1791 enum ieee80211_chanctx_mode mode, 1792 bool radar_required); 1793 int __must_check 1794 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata, 1795 u32 *changed); 1796 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 1797 1798 int __must_check 1799 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1800 const struct cfg80211_chan_def *chandef, 1801 u32 *changed); 1802 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1803 int __must_check 1804 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1805 u32 *changed); 1806 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1807 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1808 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1809 bool clear); 1810 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 1811 struct ieee80211_chanctx *ctx); 1812 1813 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1814 struct ieee80211_chanctx *chanctx); 1815 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 1816 struct ieee80211_chanctx *ctx); 1817 1818 void ieee80211_dfs_cac_timer(unsigned long data); 1819 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1820 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1821 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1822 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 1823 struct cfg80211_csa_settings *csa_settings); 1824 1825 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 1826 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 1827 const struct ieee80211_cipher_scheme * 1828 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 1829 enum nl80211_iftype iftype); 1830 int ieee80211_cs_headroom(struct ieee80211_local *local, 1831 struct cfg80211_crypto_settings *crypto, 1832 enum nl80211_iftype iftype); 1833 void ieee80211_recalc_dtim(struct ieee80211_local *local, 1834 struct ieee80211_sub_if_data *sdata); 1835 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 1836 const struct cfg80211_chan_def *chandef, 1837 enum ieee80211_chanctx_mode chanmode, 1838 u8 radar_detect); 1839 int ieee80211_max_num_channels(struct ieee80211_local *local); 1840 1841 /* TDLS */ 1842 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 1843 const u8 *peer, u8 action_code, u8 dialog_token, 1844 u16 status_code, u32 peer_capability, 1845 const u8 *extra_ies, size_t extra_ies_len); 1846 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 1847 const u8 *peer, enum nl80211_tdls_operation oper); 1848 1849 1850 #ifdef CONFIG_MAC80211_NOINLINE 1851 #define debug_noinline noinline 1852 #else 1853 #define debug_noinline 1854 #endif 1855 1856 #endif /* IEEE80211_I_H */ 1857