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; 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; 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; 320 321 unsigned long hw_start_time; 322 323 u32 duration, req_duration; 324 struct sk_buff *frame; 325 u64 cookie, mgmt_tx_cookie; 326 enum ieee80211_roc_type type; 327 }; 328 329 /* flags used in struct ieee80211_if_managed.flags */ 330 enum ieee80211_sta_flags { 331 IEEE80211_STA_CONNECTION_POLL = BIT(1), 332 IEEE80211_STA_CONTROL_PORT = BIT(2), 333 IEEE80211_STA_DISABLE_HT = BIT(4), 334 IEEE80211_STA_CSA_RECEIVED = BIT(5), 335 IEEE80211_STA_MFP_ENABLED = BIT(6), 336 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 337 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 338 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 339 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 340 IEEE80211_STA_DISABLE_VHT = BIT(11), 341 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 342 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 343 IEEE80211_STA_DISABLE_WMM = BIT(14), 344 }; 345 346 struct ieee80211_mgd_auth_data { 347 struct cfg80211_bss *bss; 348 unsigned long timeout; 349 int tries; 350 u16 algorithm, expected_transaction; 351 352 u8 key[WLAN_KEY_LEN_WEP104]; 353 u8 key_len, key_idx; 354 bool done; 355 bool timeout_started; 356 357 u16 sae_trans, sae_status; 358 size_t data_len; 359 u8 data[]; 360 }; 361 362 struct ieee80211_mgd_assoc_data { 363 struct cfg80211_bss *bss; 364 const u8 *supp_rates; 365 366 unsigned long timeout; 367 int tries; 368 369 u16 capability; 370 u8 prev_bssid[ETH_ALEN]; 371 u8 ssid[IEEE80211_MAX_SSID_LEN]; 372 u8 ssid_len; 373 u8 supp_rates_len; 374 bool wmm, uapsd; 375 bool need_beacon; 376 bool synced; 377 bool timeout_started; 378 379 u8 ap_ht_param; 380 381 struct ieee80211_vht_cap ap_vht_cap; 382 383 size_t ie_len; 384 u8 ie[]; 385 }; 386 387 struct ieee80211_if_managed { 388 struct timer_list timer; 389 struct timer_list conn_mon_timer; 390 struct timer_list bcn_mon_timer; 391 struct timer_list chswitch_timer; 392 struct work_struct monitor_work; 393 struct work_struct chswitch_work; 394 struct work_struct beacon_connection_loss_work; 395 struct work_struct csa_connection_drop_work; 396 397 unsigned long beacon_timeout; 398 unsigned long probe_timeout; 399 int probe_send_count; 400 bool nullfunc_failed; 401 bool connection_loss; 402 403 struct cfg80211_bss *associated; 404 struct ieee80211_mgd_auth_data *auth_data; 405 struct ieee80211_mgd_assoc_data *assoc_data; 406 407 u8 bssid[ETH_ALEN]; 408 409 u16 aid; 410 411 bool powersave; /* powersave requested for this iface */ 412 bool broken_ap; /* AP is broken -- turn off powersave */ 413 bool have_beacon; 414 u8 dtim_period; 415 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 416 driver_smps_mode; /* smps mode request */ 417 418 struct work_struct request_smps_work; 419 420 unsigned int flags; 421 422 bool beacon_crc_valid; 423 u32 beacon_crc; 424 425 bool status_acked; 426 bool status_received; 427 __le16 status_fc; 428 429 enum { 430 IEEE80211_MFP_DISABLED, 431 IEEE80211_MFP_OPTIONAL, 432 IEEE80211_MFP_REQUIRED 433 } mfp; /* management frame protection */ 434 435 /* 436 * Bitmask of enabled u-apsd queues, 437 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 438 * to take effect. 439 */ 440 unsigned int uapsd_queues; 441 442 /* 443 * Maximum number of buffered frames AP can deliver during a 444 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 445 * Needs a new association to take effect. 446 */ 447 unsigned int uapsd_max_sp_len; 448 449 int wmm_last_param_set; 450 451 u8 use_4addr; 452 453 s16 p2p_noa_index; 454 455 /* Signal strength from the last Beacon frame in the current BSS. */ 456 int last_beacon_signal; 457 458 /* 459 * Weighted average of the signal strength from Beacon frames in the 460 * current BSS. This is in units of 1/16 of the signal unit to maintain 461 * accuracy and to speed up calculations, i.e., the value need to be 462 * divided by 16 to get the actual value. 463 */ 464 int ave_beacon_signal; 465 466 /* 467 * Number of Beacon frames used in ave_beacon_signal. This can be used 468 * to avoid generating less reliable cqm events that would be based 469 * only on couple of received frames. 470 */ 471 unsigned int count_beacon_signal; 472 473 /* 474 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 475 * that triggered a cqm event. 0 indicates that no event has been 476 * generated for the current association. 477 */ 478 int last_cqm_event_signal; 479 480 /* 481 * State variables for keeping track of RSSI of the AP currently 482 * connected to and informing driver when RSSI has gone 483 * below/above a certain threshold. 484 */ 485 int rssi_min_thold, rssi_max_thold; 486 int last_ave_beacon_signal; 487 488 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 489 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 490 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 491 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 492 }; 493 494 struct ieee80211_if_ibss { 495 struct timer_list timer; 496 struct work_struct csa_connection_drop_work; 497 498 unsigned long last_scan_completed; 499 500 u32 basic_rates; 501 502 bool fixed_bssid; 503 bool fixed_channel; 504 bool privacy; 505 506 bool control_port; 507 bool userspace_handles_dfs; 508 509 u8 bssid[ETH_ALEN] __aligned(2); 510 u8 ssid[IEEE80211_MAX_SSID_LEN]; 511 u8 ssid_len, ie_len; 512 u8 *ie; 513 struct cfg80211_chan_def chandef; 514 515 unsigned long ibss_join_req; 516 /* probe response/beacon for IBSS */ 517 struct beacon_data __rcu *presp; 518 519 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 520 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 521 522 spinlock_t incomplete_lock; 523 struct list_head incomplete_stations; 524 525 enum { 526 IEEE80211_IBSS_MLME_SEARCH, 527 IEEE80211_IBSS_MLME_JOINED, 528 } state; 529 }; 530 531 /** 532 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 533 * 534 * these declarations define the interface, which enables 535 * vendor-specific mesh synchronization 536 * 537 */ 538 struct ieee802_11_elems; 539 struct ieee80211_mesh_sync_ops { 540 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 541 u16 stype, 542 struct ieee80211_mgmt *mgmt, 543 struct ieee802_11_elems *elems, 544 struct ieee80211_rx_status *rx_status); 545 546 /* should be called with beacon_data under RCU read lock */ 547 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata, 548 struct beacon_data *beacon); 549 /* add other framework functions here */ 550 }; 551 552 struct mesh_csa_settings { 553 struct rcu_head rcu_head; 554 struct cfg80211_csa_settings settings; 555 }; 556 557 struct ieee80211_if_mesh { 558 struct timer_list housekeeping_timer; 559 struct timer_list mesh_path_timer; 560 struct timer_list mesh_path_root_timer; 561 562 unsigned long wrkq_flags; 563 unsigned long mbss_changed; 564 565 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 566 size_t mesh_id_len; 567 /* Active Path Selection Protocol Identifier */ 568 u8 mesh_pp_id; 569 /* Active Path Selection Metric Identifier */ 570 u8 mesh_pm_id; 571 /* Congestion Control Mode Identifier */ 572 u8 mesh_cc_id; 573 /* Synchronization Protocol Identifier */ 574 u8 mesh_sp_id; 575 /* Authentication Protocol Identifier */ 576 u8 mesh_auth_id; 577 /* Local mesh Sequence Number */ 578 u32 sn; 579 /* Last used PREQ ID */ 580 u32 preq_id; 581 atomic_t mpaths; 582 /* Timestamp of last SN update */ 583 unsigned long last_sn_update; 584 /* Time when it's ok to send next PERR */ 585 unsigned long next_perr; 586 /* Timestamp of last PREQ sent */ 587 unsigned long last_preq; 588 struct mesh_rmc *rmc; 589 spinlock_t mesh_preq_queue_lock; 590 struct mesh_preq_queue preq_queue; 591 int preq_queue_len; 592 struct mesh_stats mshstats; 593 struct mesh_config mshcfg; 594 atomic_t estab_plinks; 595 u32 mesh_seqnum; 596 bool accepting_plinks; 597 int num_gates; 598 struct beacon_data __rcu *beacon; 599 const u8 *ie; 600 u8 ie_len; 601 enum { 602 IEEE80211_MESH_SEC_NONE = 0x0, 603 IEEE80211_MESH_SEC_AUTHED = 0x1, 604 IEEE80211_MESH_SEC_SECURED = 0x2, 605 } security; 606 bool user_mpm; 607 /* Extensible Synchronization Framework */ 608 const struct ieee80211_mesh_sync_ops *sync_ops; 609 s64 sync_offset_clockdrift_max; 610 spinlock_t sync_offset_lock; 611 bool adjusting_tbtt; 612 /* mesh power save */ 613 enum nl80211_mesh_power_mode nonpeer_pm; 614 int ps_peers_light_sleep; 615 int ps_peers_deep_sleep; 616 struct ps_data ps; 617 /* Channel Switching Support */ 618 struct mesh_csa_settings __rcu *csa; 619 bool chsw_init; 620 u8 chsw_ttl; 621 u16 pre_value; 622 623 /* offset from skb->data while building IE */ 624 int meshconf_offset; 625 }; 626 627 #ifdef CONFIG_MAC80211_MESH 628 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 629 do { (msh)->mshstats.name++; } while (0) 630 #else 631 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 632 do { } while (0) 633 #endif 634 635 /** 636 * enum ieee80211_sub_if_data_flags - virtual interface flags 637 * 638 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 639 * @IEEE80211_SDATA_PROMISC: interface is promisc 640 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 641 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 642 * associated stations and deliver multicast frames both 643 * back to wireless media and to the local net stack. 644 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 645 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 646 */ 647 enum ieee80211_sub_if_data_flags { 648 IEEE80211_SDATA_ALLMULTI = BIT(0), 649 IEEE80211_SDATA_PROMISC = BIT(1), 650 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 651 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 652 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 653 IEEE80211_SDATA_IN_DRIVER = BIT(5), 654 }; 655 656 /** 657 * enum ieee80211_sdata_state_bits - virtual interface state bits 658 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 659 * mirrors netif_running() but is separate for interface type 660 * change handling while the interface is up 661 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 662 * mode, so queues are stopped 663 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 664 * to offchannel, reset when offchannel returns 665 */ 666 enum ieee80211_sdata_state_bits { 667 SDATA_STATE_RUNNING, 668 SDATA_STATE_OFFCHANNEL, 669 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 670 }; 671 672 /** 673 * enum ieee80211_chanctx_mode - channel context configuration mode 674 * 675 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 676 * multiple interfaces 677 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 678 * only by a single interface. This can be used for example for 679 * non-fixed channel IBSS. 680 */ 681 enum ieee80211_chanctx_mode { 682 IEEE80211_CHANCTX_SHARED, 683 IEEE80211_CHANCTX_EXCLUSIVE 684 }; 685 686 struct ieee80211_chanctx { 687 struct list_head list; 688 struct rcu_head rcu_head; 689 690 enum ieee80211_chanctx_mode mode; 691 int refcount; 692 bool driver_present; 693 694 struct ieee80211_chanctx_conf conf; 695 }; 696 697 struct mac80211_qos_map { 698 struct cfg80211_qos_map qos_map; 699 struct rcu_head rcu_head; 700 }; 701 702 struct ieee80211_sub_if_data { 703 struct list_head list; 704 705 struct wireless_dev wdev; 706 707 /* keys */ 708 struct list_head key_list; 709 710 /* count for keys needing tailroom space allocation */ 711 int crypto_tx_tailroom_needed_cnt; 712 int crypto_tx_tailroom_pending_dec; 713 struct delayed_work dec_tailroom_needed_wk; 714 715 struct net_device *dev; 716 struct ieee80211_local *local; 717 718 unsigned int flags; 719 720 unsigned long state; 721 722 int drop_unencrypted; 723 724 char name[IFNAMSIZ]; 725 726 /* Fragment table for host-based reassembly */ 727 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 728 unsigned int fragment_next; 729 730 /* TID bitmap for NoAck policy */ 731 u16 noack_map; 732 733 /* bit field of ACM bits (BIT(802.1D tag)) */ 734 u8 wmm_acm; 735 736 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 737 struct ieee80211_key __rcu *default_unicast_key; 738 struct ieee80211_key __rcu *default_multicast_key; 739 struct ieee80211_key __rcu *default_mgmt_key; 740 741 u16 sequence_number; 742 __be16 control_port_protocol; 743 bool control_port_no_encrypt; 744 int encrypt_headroom; 745 746 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 747 struct mac80211_qos_map __rcu *qos_map; 748 749 struct work_struct csa_finalize_work; 750 int csa_counter_offset_beacon; 751 int csa_counter_offset_presp; 752 bool csa_radar_required; 753 struct cfg80211_chan_def csa_chandef; 754 755 /* used to reconfigure hardware SM PS */ 756 struct work_struct recalc_smps; 757 758 struct work_struct work; 759 struct sk_buff_head skb_queue; 760 761 u8 needed_rx_chains; 762 enum ieee80211_smps_mode smps_mode; 763 764 int user_power_level; /* in dBm */ 765 int ap_power_level; /* in dBm */ 766 767 bool radar_required; 768 struct delayed_work dfs_cac_timer_work; 769 770 /* 771 * AP this belongs to: self in AP mode and 772 * corresponding AP in VLAN mode, NULL for 773 * all others (might be needed later in IBSS) 774 */ 775 struct ieee80211_if_ap *bss; 776 777 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 778 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 779 780 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 781 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 782 783 union { 784 struct ieee80211_if_ap ap; 785 struct ieee80211_if_wds wds; 786 struct ieee80211_if_vlan vlan; 787 struct ieee80211_if_managed mgd; 788 struct ieee80211_if_ibss ibss; 789 struct ieee80211_if_mesh mesh; 790 u32 mntr_flags; 791 } u; 792 793 #ifdef CONFIG_MAC80211_DEBUGFS 794 struct { 795 struct dentry *subdir_stations; 796 struct dentry *default_unicast_key; 797 struct dentry *default_multicast_key; 798 struct dentry *default_mgmt_key; 799 } debugfs; 800 #endif 801 802 /* must be last, dynamically sized area in this! */ 803 struct ieee80211_vif vif; 804 }; 805 806 static inline 807 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 808 { 809 return container_of(p, struct ieee80211_sub_if_data, vif); 810 } 811 812 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 813 __acquires(&sdata->wdev.mtx) 814 { 815 mutex_lock(&sdata->wdev.mtx); 816 __acquire(&sdata->wdev.mtx); 817 } 818 819 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 820 __releases(&sdata->wdev.mtx) 821 { 822 mutex_unlock(&sdata->wdev.mtx); 823 __release(&sdata->wdev.mtx); 824 } 825 826 #define sdata_dereference(p, sdata) \ 827 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 828 829 static inline void 830 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 831 { 832 lockdep_assert_held(&sdata->wdev.mtx); 833 } 834 835 static inline enum ieee80211_band 836 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 837 { 838 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 839 struct ieee80211_chanctx_conf *chanctx_conf; 840 841 rcu_read_lock(); 842 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 843 if (!WARN_ON(!chanctx_conf)) 844 band = chanctx_conf->def.chan->band; 845 rcu_read_unlock(); 846 847 return band; 848 } 849 850 static inline int 851 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 852 { 853 switch (chandef->width) { 854 case NL80211_CHAN_WIDTH_5: 855 return 2; 856 case NL80211_CHAN_WIDTH_10: 857 return 1; 858 default: 859 return 0; 860 } 861 } 862 863 static inline int 864 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 865 { 866 struct ieee80211_chanctx_conf *chanctx_conf; 867 int shift = 0; 868 869 rcu_read_lock(); 870 chanctx_conf = rcu_dereference(vif->chanctx_conf); 871 if (chanctx_conf) 872 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 873 rcu_read_unlock(); 874 875 return shift; 876 } 877 878 enum sdata_queue_type { 879 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 880 IEEE80211_SDATA_QUEUE_AGG_START = 1, 881 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 882 }; 883 884 enum { 885 IEEE80211_RX_MSG = 1, 886 IEEE80211_TX_STATUS_MSG = 2, 887 }; 888 889 enum queue_stop_reason { 890 IEEE80211_QUEUE_STOP_REASON_DRIVER, 891 IEEE80211_QUEUE_STOP_REASON_PS, 892 IEEE80211_QUEUE_STOP_REASON_CSA, 893 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 894 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 895 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 896 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 897 IEEE80211_QUEUE_STOP_REASON_FLUSH, 898 }; 899 900 #ifdef CONFIG_MAC80211_LEDS 901 struct tpt_led_trigger { 902 struct led_trigger trig; 903 char name[32]; 904 const struct ieee80211_tpt_blink *blink_table; 905 unsigned int blink_table_len; 906 struct timer_list timer; 907 unsigned long prev_traffic; 908 unsigned long tx_bytes, rx_bytes; 909 unsigned int active, want; 910 bool running; 911 }; 912 #endif 913 914 /* 915 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 916 * 917 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 918 * certain latency range (in Milliseconds). Each station that uses these 919 * ranges will have bins to count the amount of frames received in that range. 920 * The user can configure the ranges via debugfs. 921 * If ranges is NULL then Tx latency statistics bins are disabled for all 922 * stations. 923 * 924 * @n_ranges: number of ranges that are taken in account 925 * @ranges: the ranges that the user requested or NULL if disabled. 926 */ 927 struct ieee80211_tx_latency_bin_ranges { 928 int n_ranges; 929 u32 ranges[]; 930 }; 931 932 /** 933 * mac80211 scan flags - currently active scan mode 934 * 935 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 936 * well be on the operating channel 937 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 938 * determine if we are on the operating channel or not 939 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 940 * channel. This should not interrupt normal traffic. 941 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 942 * that the scan completed. 943 * @SCAN_ABORTED: Set for our scan work function when the driver reported 944 * a scan complete for an aborted scan. 945 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 946 * cancelled. 947 */ 948 enum { 949 SCAN_SW_SCANNING, 950 SCAN_HW_SCANNING, 951 SCAN_ONCHANNEL_SCANNING, 952 SCAN_COMPLETED, 953 SCAN_ABORTED, 954 SCAN_HW_CANCELLED, 955 }; 956 957 /** 958 * enum mac80211_scan_state - scan state machine states 959 * 960 * @SCAN_DECISION: Main entry point to the scan state machine, this state 961 * determines if we should keep on scanning or switch back to the 962 * operating channel 963 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 964 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 965 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 966 * send out data 967 * @SCAN_RESUME: Resume the scan and scan the next channel 968 * @SCAN_ABORT: Abort the scan and go back to operating channel 969 */ 970 enum mac80211_scan_state { 971 SCAN_DECISION, 972 SCAN_SET_CHANNEL, 973 SCAN_SEND_PROBE, 974 SCAN_SUSPEND, 975 SCAN_RESUME, 976 SCAN_ABORT, 977 }; 978 979 struct ieee80211_local { 980 /* embed the driver visible part. 981 * don't cast (use the static inlines below), but we keep 982 * it first anyway so they become a no-op */ 983 struct ieee80211_hw hw; 984 985 const struct ieee80211_ops *ops; 986 987 /* 988 * private workqueue to mac80211. mac80211 makes this accessible 989 * via ieee80211_queue_work() 990 */ 991 struct workqueue_struct *workqueue; 992 993 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 994 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 995 spinlock_t queue_stop_reason_lock; 996 997 int open_count; 998 int monitors, cooked_mntrs; 999 /* number of interfaces with corresponding FIF_ flags */ 1000 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1001 fif_probe_req; 1002 int probe_req_reg; 1003 unsigned int filter_flags; /* FIF_* */ 1004 1005 bool wiphy_ciphers_allocated; 1006 1007 bool use_chanctx; 1008 1009 /* protects the aggregated multicast list and filter calls */ 1010 spinlock_t filter_lock; 1011 1012 /* used for uploading changed mc list */ 1013 struct work_struct reconfig_filter; 1014 1015 /* aggregated multicast list */ 1016 struct netdev_hw_addr_list mc_list; 1017 1018 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1019 1020 /* 1021 * suspended is true if we finished all the suspend _and_ we have 1022 * not yet come up from resume. This is to be used by mac80211 1023 * to ensure driver sanity during suspend and mac80211's own 1024 * sanity. It can eventually be used for WoW as well. 1025 */ 1026 bool suspended; 1027 1028 /* 1029 * Resuming is true while suspended, but when we're reprogramming the 1030 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1031 * again even though some other parts of the stack are still suspended 1032 * and we still drop received frames to avoid waking the stack. 1033 */ 1034 bool resuming; 1035 1036 /* 1037 * quiescing is true during the suspend process _only_ to 1038 * ease timer cancelling etc. 1039 */ 1040 bool quiescing; 1041 1042 /* device is started */ 1043 bool started; 1044 1045 /* device is during a HW reconfig */ 1046 bool in_reconfig; 1047 1048 /* wowlan is enabled -- don't reconfig on resume */ 1049 bool wowlan; 1050 1051 /* DFS/radar detection is enabled */ 1052 bool radar_detect_enabled; 1053 struct work_struct radar_detected_work; 1054 1055 /* number of RX chains the hardware has */ 1056 u8 rx_chains; 1057 1058 int tx_headroom; /* required headroom for hardware/radiotap */ 1059 1060 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1061 * added to skb_queue will be processed, but frames in 1062 * skb_queue_unreliable may be dropped if the total length of these 1063 * queues increases over the limit. */ 1064 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1065 struct tasklet_struct tasklet; 1066 struct sk_buff_head skb_queue; 1067 struct sk_buff_head skb_queue_unreliable; 1068 1069 spinlock_t rx_path_lock; 1070 1071 /* Station data */ 1072 /* 1073 * The mutex only protects the list, hash table and 1074 * counter, reads are done with RCU. 1075 */ 1076 struct mutex sta_mtx; 1077 spinlock_t tim_lock; 1078 unsigned long num_sta; 1079 struct list_head sta_list; 1080 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1081 struct timer_list sta_cleanup; 1082 int sta_generation; 1083 1084 /* 1085 * Tx latency statistics parameters for all stations. 1086 * Can enable via debugfs (NULL when disabled). 1087 */ 1088 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1089 1090 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1091 struct tasklet_struct tx_pending_tasklet; 1092 1093 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1094 1095 /* number of interfaces with corresponding IFF_ flags */ 1096 atomic_t iff_allmultis, iff_promiscs; 1097 1098 struct rate_control_ref *rate_ctrl; 1099 1100 struct crypto_cipher *wep_tx_tfm; 1101 struct crypto_cipher *wep_rx_tfm; 1102 u32 wep_iv; 1103 1104 /* see iface.c */ 1105 struct list_head interfaces; 1106 struct mutex iflist_mtx; 1107 1108 /* 1109 * Key mutex, protects sdata's key_list and sta_info's 1110 * key pointers (write access, they're RCU.) 1111 */ 1112 struct mutex key_mtx; 1113 1114 /* mutex for scan and work locking */ 1115 struct mutex mtx; 1116 1117 /* Scanning and BSS list */ 1118 unsigned long scanning; 1119 struct cfg80211_ssid scan_ssid; 1120 struct cfg80211_scan_request *int_scan_req; 1121 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1122 struct cfg80211_chan_def scan_chandef; 1123 enum ieee80211_band hw_scan_band; 1124 int scan_channel_idx; 1125 int scan_ies_len; 1126 int hw_scan_ies_bufsize; 1127 1128 struct work_struct sched_scan_stopped_work; 1129 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1130 struct cfg80211_sched_scan_request *sched_scan_req; 1131 1132 unsigned long leave_oper_channel_time; 1133 enum mac80211_scan_state next_scan_state; 1134 struct delayed_work scan_work; 1135 struct ieee80211_sub_if_data __rcu *scan_sdata; 1136 /* For backward compatibility only -- do not use */ 1137 struct cfg80211_chan_def _oper_chandef; 1138 1139 /* Temporary remain-on-channel for off-channel operations */ 1140 struct ieee80211_channel *tmp_channel; 1141 1142 /* channel contexts */ 1143 struct list_head chanctx_list; 1144 struct mutex chanctx_mtx; 1145 1146 /* SNMP counters */ 1147 /* dot11CountersTable */ 1148 u32 dot11TransmittedFragmentCount; 1149 u32 dot11MulticastTransmittedFrameCount; 1150 u32 dot11FailedCount; 1151 u32 dot11RetryCount; 1152 u32 dot11MultipleRetryCount; 1153 u32 dot11FrameDuplicateCount; 1154 u32 dot11ReceivedFragmentCount; 1155 u32 dot11MulticastReceivedFrameCount; 1156 u32 dot11TransmittedFrameCount; 1157 1158 #ifdef CONFIG_MAC80211_LEDS 1159 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1160 struct tpt_led_trigger *tpt_led_trigger; 1161 char tx_led_name[32], rx_led_name[32], 1162 assoc_led_name[32], radio_led_name[32]; 1163 #endif 1164 1165 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1166 /* TX/RX handler statistics */ 1167 unsigned int tx_handlers_drop; 1168 unsigned int tx_handlers_queued; 1169 unsigned int tx_handlers_drop_unencrypted; 1170 unsigned int tx_handlers_drop_fragment; 1171 unsigned int tx_handlers_drop_wep; 1172 unsigned int tx_handlers_drop_not_assoc; 1173 unsigned int tx_handlers_drop_unauth_port; 1174 unsigned int rx_handlers_drop; 1175 unsigned int rx_handlers_queued; 1176 unsigned int rx_handlers_drop_nullfunc; 1177 unsigned int rx_handlers_drop_defrag; 1178 unsigned int rx_handlers_drop_short; 1179 unsigned int tx_expand_skb_head; 1180 unsigned int tx_expand_skb_head_cloned; 1181 unsigned int rx_expand_skb_head; 1182 unsigned int rx_expand_skb_head2; 1183 unsigned int rx_handlers_fragments; 1184 unsigned int tx_status_drop; 1185 #define I802_DEBUG_INC(c) (c)++ 1186 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1187 #define I802_DEBUG_INC(c) do { } while (0) 1188 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1189 1190 1191 int total_ps_buffered; /* total number of all buffered unicast and 1192 * multicast packets for power saving stations 1193 */ 1194 1195 bool pspolling; 1196 bool offchannel_ps_enabled; 1197 /* 1198 * PS can only be enabled when we have exactly one managed 1199 * interface (and monitors) in PS, this then points there. 1200 */ 1201 struct ieee80211_sub_if_data *ps_sdata; 1202 struct work_struct dynamic_ps_enable_work; 1203 struct work_struct dynamic_ps_disable_work; 1204 struct timer_list dynamic_ps_timer; 1205 struct notifier_block network_latency_notifier; 1206 struct notifier_block ifa_notifier; 1207 struct notifier_block ifa6_notifier; 1208 1209 /* 1210 * The dynamic ps timeout configured from user space via WEXT - 1211 * this will override whatever chosen by mac80211 internally. 1212 */ 1213 int dynamic_ps_forced_timeout; 1214 1215 int user_power_level; /* in dBm, for all interfaces */ 1216 1217 enum ieee80211_smps_mode smps_mode; 1218 1219 struct work_struct restart_work; 1220 1221 #ifdef CONFIG_MAC80211_DEBUGFS 1222 struct local_debugfsdentries { 1223 struct dentry *rcdir; 1224 struct dentry *keys; 1225 } debugfs; 1226 #endif 1227 1228 /* 1229 * Remain-on-channel support 1230 */ 1231 struct list_head roc_list; 1232 struct work_struct hw_roc_start, hw_roc_done; 1233 unsigned long hw_roc_start_time; 1234 u64 roc_cookie_counter; 1235 1236 struct idr ack_status_frames; 1237 spinlock_t ack_status_lock; 1238 1239 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1240 1241 /* virtual monitor interface */ 1242 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1243 struct cfg80211_chan_def monitor_chandef; 1244 }; 1245 1246 static inline struct ieee80211_sub_if_data * 1247 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1248 { 1249 return netdev_priv(dev); 1250 } 1251 1252 static inline struct ieee80211_sub_if_data * 1253 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1254 { 1255 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1256 } 1257 1258 /* this struct represents 802.11n's RA/TID combination */ 1259 struct ieee80211_ra_tid { 1260 u8 ra[ETH_ALEN]; 1261 u16 tid; 1262 }; 1263 1264 /* this struct holds the value parsing from channel switch IE */ 1265 struct ieee80211_csa_ie { 1266 struct cfg80211_chan_def chandef; 1267 u8 mode; 1268 u8 count; 1269 u8 ttl; 1270 u16 pre_value; 1271 }; 1272 1273 /* Parsed Information Elements */ 1274 struct ieee802_11_elems { 1275 const u8 *ie_start; 1276 size_t total_len; 1277 1278 /* pointers to IEs */ 1279 const u8 *ssid; 1280 const u8 *supp_rates; 1281 const u8 *ds_params; 1282 const struct ieee80211_tim_ie *tim; 1283 const u8 *challenge; 1284 const u8 *rsn; 1285 const u8 *erp_info; 1286 const u8 *ext_supp_rates; 1287 const u8 *wmm_info; 1288 const u8 *wmm_param; 1289 const struct ieee80211_ht_cap *ht_cap_elem; 1290 const struct ieee80211_ht_operation *ht_operation; 1291 const struct ieee80211_vht_cap *vht_cap_elem; 1292 const struct ieee80211_vht_operation *vht_operation; 1293 const struct ieee80211_meshconf_ie *mesh_config; 1294 const u8 *mesh_id; 1295 const u8 *peering; 1296 const __le16 *awake_window; 1297 const u8 *preq; 1298 const u8 *prep; 1299 const u8 *perr; 1300 const struct ieee80211_rann_ie *rann; 1301 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1302 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1303 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1304 const u8 *country_elem; 1305 const u8 *pwr_constr_elem; 1306 const struct ieee80211_timeout_interval_ie *timeout_int; 1307 const u8 *opmode_notif; 1308 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1309 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1310 1311 /* length of them, respectively */ 1312 u8 ssid_len; 1313 u8 supp_rates_len; 1314 u8 tim_len; 1315 u8 challenge_len; 1316 u8 rsn_len; 1317 u8 ext_supp_rates_len; 1318 u8 wmm_info_len; 1319 u8 wmm_param_len; 1320 u8 mesh_id_len; 1321 u8 peering_len; 1322 u8 preq_len; 1323 u8 prep_len; 1324 u8 perr_len; 1325 u8 country_elem_len; 1326 1327 /* whether a parse error occurred while retrieving these elements */ 1328 bool parse_error; 1329 }; 1330 1331 static inline struct ieee80211_local *hw_to_local( 1332 struct ieee80211_hw *hw) 1333 { 1334 return container_of(hw, struct ieee80211_local, hw); 1335 } 1336 1337 1338 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1339 { 1340 return ether_addr_equal(raddr, addr) || 1341 is_broadcast_ether_addr(raddr); 1342 } 1343 1344 static inline bool 1345 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1346 { 1347 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1348 status->flag & RX_FLAG_MACTIME_END); 1349 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1350 } 1351 1352 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1353 struct ieee80211_rx_status *status, 1354 unsigned int mpdu_len, 1355 unsigned int mpdu_offset); 1356 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1357 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1358 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1359 u32 changed); 1360 void ieee80211_configure_filter(struct ieee80211_local *local); 1361 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1362 1363 /* STA code */ 1364 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1365 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1366 struct cfg80211_auth_request *req); 1367 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1368 struct cfg80211_assoc_request *req); 1369 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1370 struct cfg80211_deauth_request *req); 1371 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1372 struct cfg80211_disassoc_request *req); 1373 void ieee80211_send_pspoll(struct ieee80211_local *local, 1374 struct ieee80211_sub_if_data *sdata); 1375 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1376 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1377 int ieee80211_max_network_latency(struct notifier_block *nb, 1378 unsigned long data, void *dummy); 1379 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1380 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1381 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1382 struct sk_buff *skb); 1383 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1384 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1385 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1386 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1387 __le16 fc, bool acked); 1388 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1389 1390 /* IBSS code */ 1391 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1392 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1393 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1394 const u8 *bssid, const u8 *addr, u32 supp_rates); 1395 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1396 struct cfg80211_ibss_params *params); 1397 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1398 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1399 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1400 struct sk_buff *skb); 1401 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1402 struct cfg80211_csa_settings *csa_settings); 1403 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1404 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1405 1406 /* mesh code */ 1407 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1408 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1409 struct sk_buff *skb); 1410 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1411 struct cfg80211_csa_settings *csa_settings, 1412 bool csa_action); 1413 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1414 1415 /* scan/BSS handling */ 1416 void ieee80211_scan_work(struct work_struct *work); 1417 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1418 const u8 *ssid, u8 ssid_len, 1419 struct ieee80211_channel *chan, 1420 enum nl80211_bss_scan_width scan_width); 1421 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1422 struct cfg80211_scan_request *req); 1423 void ieee80211_scan_cancel(struct ieee80211_local *local); 1424 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1425 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1426 1427 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1428 struct ieee80211_bss * 1429 ieee80211_bss_info_update(struct ieee80211_local *local, 1430 struct ieee80211_rx_status *rx_status, 1431 struct ieee80211_mgmt *mgmt, 1432 size_t len, 1433 struct ieee802_11_elems *elems, 1434 struct ieee80211_channel *channel); 1435 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1436 struct ieee80211_bss *bss); 1437 1438 /* scheduled scan handling */ 1439 int 1440 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1441 struct cfg80211_sched_scan_request *req); 1442 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1443 struct cfg80211_sched_scan_request *req); 1444 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1445 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1446 1447 /* off-channel helpers */ 1448 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1449 void ieee80211_offchannel_return(struct ieee80211_local *local); 1450 void ieee80211_roc_setup(struct ieee80211_local *local); 1451 void ieee80211_start_next_roc(struct ieee80211_local *local); 1452 void ieee80211_roc_purge(struct ieee80211_local *local, 1453 struct ieee80211_sub_if_data *sdata); 1454 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1455 void ieee80211_sw_roc_work(struct work_struct *work); 1456 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1457 1458 /* channel switch handling */ 1459 void ieee80211_csa_finalize_work(struct work_struct *work); 1460 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1461 struct cfg80211_csa_settings *params); 1462 1463 /* interface handling */ 1464 int ieee80211_iface_init(void); 1465 void ieee80211_iface_exit(void); 1466 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1467 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1468 struct vif_params *params); 1469 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1470 enum nl80211_iftype type); 1471 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1472 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1473 u32 ieee80211_idle_off(struct ieee80211_local *local); 1474 void ieee80211_recalc_idle(struct ieee80211_local *local); 1475 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1476 const int offset); 1477 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1478 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1479 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1480 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1481 1482 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1483 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1484 1485 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1486 { 1487 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1488 } 1489 1490 /* tx handling */ 1491 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1492 void ieee80211_tx_pending(unsigned long data); 1493 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1494 struct net_device *dev); 1495 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1496 struct net_device *dev); 1497 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1498 struct sk_buff_head *skbs); 1499 1500 /* HT */ 1501 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1502 struct ieee80211_sta_ht_cap *ht_cap); 1503 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1504 struct ieee80211_supported_band *sband, 1505 const struct ieee80211_ht_cap *ht_cap_ie, 1506 struct sta_info *sta); 1507 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1508 const u8 *da, u16 tid, 1509 u16 initiator, u16 reason_code); 1510 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1511 enum ieee80211_smps_mode smps, const u8 *da, 1512 const u8 *bssid); 1513 void ieee80211_request_smps_ap_work(struct work_struct *work); 1514 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1515 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1516 enum ieee80211_smps_mode smps_mode_new); 1517 1518 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1519 u16 initiator, u16 reason, bool stop); 1520 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1521 u16 initiator, u16 reason, bool stop); 1522 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1523 enum ieee80211_agg_stop_reason reason); 1524 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1525 struct sta_info *sta, 1526 struct ieee80211_mgmt *mgmt, size_t len); 1527 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1528 struct sta_info *sta, 1529 struct ieee80211_mgmt *mgmt, 1530 size_t len); 1531 void ieee80211_process_addba_request(struct ieee80211_local *local, 1532 struct sta_info *sta, 1533 struct ieee80211_mgmt *mgmt, 1534 size_t len); 1535 1536 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1537 enum ieee80211_agg_stop_reason reason); 1538 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1539 enum ieee80211_agg_stop_reason reason); 1540 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1541 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1542 void ieee80211_ba_session_work(struct work_struct *work); 1543 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1544 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1545 1546 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1547 1548 /* VHT */ 1549 void 1550 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1551 struct ieee80211_supported_band *sband, 1552 const struct ieee80211_vht_cap *vht_cap_ie, 1553 struct sta_info *sta); 1554 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1555 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1556 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1557 struct sta_info *sta, u8 opmode, 1558 enum ieee80211_band band, bool nss_only); 1559 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1560 struct ieee80211_sta_vht_cap *vht_cap); 1561 1562 /* Spectrum management */ 1563 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1564 struct ieee80211_mgmt *mgmt, 1565 size_t len); 1566 /** 1567 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1568 * @sdata: the sdata of the interface which has received the frame 1569 * @elems: parsed 802.11 elements received with the frame 1570 * @beacon: indicates if the frame was a beacon or probe response 1571 * @current_band: indicates the current band 1572 * @sta_flags: contains information about own capabilities and restrictions 1573 * to decide which channel switch announcements can be accepted. Only the 1574 * following subset of &enum ieee80211_sta_flags are evaluated: 1575 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1576 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1577 * %IEEE80211_STA_DISABLE_160MHZ. 1578 * @bssid: the currently connected bssid (for reporting) 1579 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1580 All of them will be filled with if success only. 1581 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1582 */ 1583 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1584 struct ieee802_11_elems *elems, bool beacon, 1585 enum ieee80211_band current_band, 1586 u32 sta_flags, u8 *bssid, 1587 struct ieee80211_csa_ie *csa_ie); 1588 1589 /* Suspend/resume and hw reconfiguration */ 1590 int ieee80211_reconfig(struct ieee80211_local *local); 1591 void ieee80211_stop_device(struct ieee80211_local *local); 1592 1593 int __ieee80211_suspend(struct ieee80211_hw *hw, 1594 struct cfg80211_wowlan *wowlan); 1595 1596 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1597 { 1598 struct ieee80211_local *local = hw_to_local(hw); 1599 1600 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1601 "%s: resume with hardware scan still in progress\n", 1602 wiphy_name(hw->wiphy)); 1603 1604 return ieee80211_reconfig(hw_to_local(hw)); 1605 } 1606 1607 /* utility functions/constants */ 1608 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1609 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1610 enum nl80211_iftype type); 1611 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1612 int rate, int erp, int short_preamble, 1613 int shift); 1614 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1615 struct ieee80211_hdr *hdr, const u8 *tsc, 1616 gfp_t gfp); 1617 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1618 bool bss_notify); 1619 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1620 enum ieee80211_band band); 1621 1622 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1623 struct sk_buff *skb, int tid, 1624 enum ieee80211_band band); 1625 1626 static inline void 1627 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1628 struct sk_buff *skb, int tid, 1629 enum ieee80211_band band) 1630 { 1631 rcu_read_lock(); 1632 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1633 rcu_read_unlock(); 1634 } 1635 1636 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1637 struct sk_buff *skb, int tid) 1638 { 1639 struct ieee80211_chanctx_conf *chanctx_conf; 1640 1641 rcu_read_lock(); 1642 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1643 if (WARN_ON(!chanctx_conf)) { 1644 rcu_read_unlock(); 1645 kfree_skb(skb); 1646 return; 1647 } 1648 1649 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1650 chanctx_conf->def.chan->band); 1651 rcu_read_unlock(); 1652 } 1653 1654 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1655 struct sk_buff *skb) 1656 { 1657 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1658 ieee80211_tx_skb_tid(sdata, skb, 7); 1659 } 1660 1661 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1662 struct ieee802_11_elems *elems, 1663 u64 filter, u32 crc); 1664 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1665 bool action, 1666 struct ieee802_11_elems *elems) 1667 { 1668 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1669 } 1670 1671 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1672 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1673 void ieee80211_dynamic_ps_timer(unsigned long data); 1674 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1675 struct ieee80211_sub_if_data *sdata, 1676 int powersave); 1677 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1678 struct ieee80211_hdr *hdr); 1679 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1680 struct ieee80211_hdr *hdr, bool ack); 1681 1682 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1683 unsigned long queues, 1684 enum queue_stop_reason reason); 1685 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1686 unsigned long queues, 1687 enum queue_stop_reason reason); 1688 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1689 enum queue_stop_reason reason); 1690 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1691 enum queue_stop_reason reason); 1692 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1693 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1694 struct sk_buff *skb); 1695 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1696 struct sk_buff_head *skbs, 1697 void (*fn)(void *data), void *data); 1698 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1699 struct sk_buff_head *skbs) 1700 { 1701 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1702 } 1703 void ieee80211_flush_queues(struct ieee80211_local *local, 1704 struct ieee80211_sub_if_data *sdata); 1705 1706 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1707 u16 transaction, u16 auth_alg, u16 status, 1708 const u8 *extra, size_t extra_len, const u8 *bssid, 1709 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1710 u32 tx_flags); 1711 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1712 const u8 *bssid, u16 stype, u16 reason, 1713 bool send_frame, u8 *frame_buf); 1714 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1715 size_t buffer_len, const u8 *ie, size_t ie_len, 1716 enum ieee80211_band band, u32 rate_mask, 1717 struct cfg80211_chan_def *chandef); 1718 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1719 u8 *dst, u32 ratemask, 1720 struct ieee80211_channel *chan, 1721 const u8 *ssid, size_t ssid_len, 1722 const u8 *ie, size_t ie_len, 1723 bool directed); 1724 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1725 const u8 *ssid, size_t ssid_len, 1726 const u8 *ie, size_t ie_len, 1727 u32 ratemask, bool directed, u32 tx_flags, 1728 struct ieee80211_channel *channel, bool scan); 1729 1730 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1731 struct ieee802_11_elems *elems, 1732 enum ieee80211_band band, u32 *basic_rates); 1733 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1734 enum ieee80211_smps_mode smps_mode); 1735 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1736 enum ieee80211_smps_mode smps_mode); 1737 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1738 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1739 1740 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1741 const u8 *ids, int n_ids, size_t offset); 1742 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1743 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1744 u16 cap); 1745 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1746 const struct cfg80211_chan_def *chandef, 1747 u16 prot_mode); 1748 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1749 u32 cap); 1750 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1751 const struct ieee80211_supported_band *sband, 1752 const u8 *srates, int srates_len, u32 *rates); 1753 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1754 struct sk_buff *skb, bool need_basic, 1755 enum ieee80211_band band); 1756 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1757 struct sk_buff *skb, bool need_basic, 1758 enum ieee80211_band band); 1759 1760 /* channel management */ 1761 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1762 const struct ieee80211_ht_operation *ht_oper, 1763 struct cfg80211_chan_def *chandef); 1764 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1765 1766 int __must_check 1767 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1768 const struct cfg80211_chan_def *chandef, 1769 enum ieee80211_chanctx_mode mode); 1770 int __must_check 1771 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1772 const struct cfg80211_chan_def *chandef, 1773 u32 *changed); 1774 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1775 int __must_check 1776 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1777 u32 *changed); 1778 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1779 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1780 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1781 bool clear); 1782 1783 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1784 struct ieee80211_chanctx *chanctx); 1785 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 1786 struct ieee80211_chanctx *ctx); 1787 1788 void ieee80211_dfs_cac_timer(unsigned long data); 1789 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1790 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1791 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1792 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 1793 struct cfg80211_csa_settings *csa_settings); 1794 1795 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 1796 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 1797 const struct ieee80211_cipher_scheme * 1798 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 1799 enum nl80211_iftype iftype); 1800 int ieee80211_cs_headroom(struct ieee80211_local *local, 1801 struct cfg80211_crypto_settings *crypto, 1802 enum nl80211_iftype iftype); 1803 void ieee80211_recalc_dtim(struct ieee80211_local *local, 1804 struct ieee80211_sub_if_data *sdata); 1805 1806 #ifdef CONFIG_MAC80211_NOINLINE 1807 #define debug_noinline noinline 1808 #else 1809 #define debug_noinline 1810 #endif 1811 1812 #endif /* IEEE80211_I_H */ 1813