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 enum { 620 IEEE80211_MESH_CSA_ROLE_NONE, 621 IEEE80211_MESH_CSA_ROLE_INIT, 622 IEEE80211_MESH_CSA_ROLE_REPEATER, 623 } csa_role; 624 u8 chsw_ttl; 625 u16 pre_value; 626 627 /* offset from skb->data while building IE */ 628 int meshconf_offset; 629 }; 630 631 #ifdef CONFIG_MAC80211_MESH 632 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 633 do { (msh)->mshstats.name++; } while (0) 634 #else 635 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 636 do { } while (0) 637 #endif 638 639 /** 640 * enum ieee80211_sub_if_data_flags - virtual interface flags 641 * 642 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 643 * @IEEE80211_SDATA_PROMISC: interface is promisc 644 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 645 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 646 * associated stations and deliver multicast frames both 647 * back to wireless media and to the local net stack. 648 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 649 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 650 */ 651 enum ieee80211_sub_if_data_flags { 652 IEEE80211_SDATA_ALLMULTI = BIT(0), 653 IEEE80211_SDATA_PROMISC = BIT(1), 654 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 655 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 656 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 657 IEEE80211_SDATA_IN_DRIVER = BIT(5), 658 }; 659 660 /** 661 * enum ieee80211_sdata_state_bits - virtual interface state bits 662 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 663 * mirrors netif_running() but is separate for interface type 664 * change handling while the interface is up 665 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 666 * mode, so queues are stopped 667 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 668 * to offchannel, reset when offchannel returns 669 */ 670 enum ieee80211_sdata_state_bits { 671 SDATA_STATE_RUNNING, 672 SDATA_STATE_OFFCHANNEL, 673 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 674 }; 675 676 /** 677 * enum ieee80211_chanctx_mode - channel context configuration mode 678 * 679 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 680 * multiple interfaces 681 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 682 * only by a single interface. This can be used for example for 683 * non-fixed channel IBSS. 684 */ 685 enum ieee80211_chanctx_mode { 686 IEEE80211_CHANCTX_SHARED, 687 IEEE80211_CHANCTX_EXCLUSIVE 688 }; 689 690 struct ieee80211_chanctx { 691 struct list_head list; 692 struct rcu_head rcu_head; 693 694 enum ieee80211_chanctx_mode mode; 695 int refcount; 696 bool driver_present; 697 698 struct ieee80211_chanctx_conf conf; 699 }; 700 701 struct mac80211_qos_map { 702 struct cfg80211_qos_map qos_map; 703 struct rcu_head rcu_head; 704 }; 705 706 struct ieee80211_sub_if_data { 707 struct list_head list; 708 709 struct wireless_dev wdev; 710 711 /* keys */ 712 struct list_head key_list; 713 714 /* count for keys needing tailroom space allocation */ 715 int crypto_tx_tailroom_needed_cnt; 716 int crypto_tx_tailroom_pending_dec; 717 struct delayed_work dec_tailroom_needed_wk; 718 719 struct net_device *dev; 720 struct ieee80211_local *local; 721 722 unsigned int flags; 723 724 unsigned long state; 725 726 int drop_unencrypted; 727 728 char name[IFNAMSIZ]; 729 730 /* Fragment table for host-based reassembly */ 731 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 732 unsigned int fragment_next; 733 734 /* TID bitmap for NoAck policy */ 735 u16 noack_map; 736 737 /* bit field of ACM bits (BIT(802.1D tag)) */ 738 u8 wmm_acm; 739 740 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 741 struct ieee80211_key __rcu *default_unicast_key; 742 struct ieee80211_key __rcu *default_multicast_key; 743 struct ieee80211_key __rcu *default_mgmt_key; 744 745 u16 sequence_number; 746 __be16 control_port_protocol; 747 bool control_port_no_encrypt; 748 int encrypt_headroom; 749 750 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 751 struct mac80211_qos_map __rcu *qos_map; 752 753 struct work_struct csa_finalize_work; 754 int csa_counter_offset_beacon; 755 int csa_counter_offset_presp; 756 bool csa_radar_required; 757 struct cfg80211_chan_def csa_chandef; 758 759 /* used to reconfigure hardware SM PS */ 760 struct work_struct recalc_smps; 761 762 struct work_struct work; 763 struct sk_buff_head skb_queue; 764 765 u8 needed_rx_chains; 766 enum ieee80211_smps_mode smps_mode; 767 768 int user_power_level; /* in dBm */ 769 int ap_power_level; /* in dBm */ 770 771 bool radar_required; 772 struct delayed_work dfs_cac_timer_work; 773 774 /* 775 * AP this belongs to: self in AP mode and 776 * corresponding AP in VLAN mode, NULL for 777 * all others (might be needed later in IBSS) 778 */ 779 struct ieee80211_if_ap *bss; 780 781 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 782 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 783 784 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 785 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 786 787 union { 788 struct ieee80211_if_ap ap; 789 struct ieee80211_if_wds wds; 790 struct ieee80211_if_vlan vlan; 791 struct ieee80211_if_managed mgd; 792 struct ieee80211_if_ibss ibss; 793 struct ieee80211_if_mesh mesh; 794 u32 mntr_flags; 795 } u; 796 797 #ifdef CONFIG_MAC80211_DEBUGFS 798 struct { 799 struct dentry *subdir_stations; 800 struct dentry *default_unicast_key; 801 struct dentry *default_multicast_key; 802 struct dentry *default_mgmt_key; 803 } debugfs; 804 #endif 805 806 /* must be last, dynamically sized area in this! */ 807 struct ieee80211_vif vif; 808 }; 809 810 static inline 811 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 812 { 813 return container_of(p, struct ieee80211_sub_if_data, vif); 814 } 815 816 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 817 __acquires(&sdata->wdev.mtx) 818 { 819 mutex_lock(&sdata->wdev.mtx); 820 __acquire(&sdata->wdev.mtx); 821 } 822 823 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 824 __releases(&sdata->wdev.mtx) 825 { 826 mutex_unlock(&sdata->wdev.mtx); 827 __release(&sdata->wdev.mtx); 828 } 829 830 #define sdata_dereference(p, sdata) \ 831 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 832 833 static inline void 834 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 835 { 836 lockdep_assert_held(&sdata->wdev.mtx); 837 } 838 839 static inline enum ieee80211_band 840 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 841 { 842 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 843 struct ieee80211_chanctx_conf *chanctx_conf; 844 845 rcu_read_lock(); 846 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 847 if (!WARN_ON(!chanctx_conf)) 848 band = chanctx_conf->def.chan->band; 849 rcu_read_unlock(); 850 851 return band; 852 } 853 854 static inline int 855 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 856 { 857 switch (chandef->width) { 858 case NL80211_CHAN_WIDTH_5: 859 return 2; 860 case NL80211_CHAN_WIDTH_10: 861 return 1; 862 default: 863 return 0; 864 } 865 } 866 867 static inline int 868 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 869 { 870 struct ieee80211_chanctx_conf *chanctx_conf; 871 int shift = 0; 872 873 rcu_read_lock(); 874 chanctx_conf = rcu_dereference(vif->chanctx_conf); 875 if (chanctx_conf) 876 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 877 rcu_read_unlock(); 878 879 return shift; 880 } 881 882 enum sdata_queue_type { 883 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 884 IEEE80211_SDATA_QUEUE_AGG_START = 1, 885 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 886 }; 887 888 enum { 889 IEEE80211_RX_MSG = 1, 890 IEEE80211_TX_STATUS_MSG = 2, 891 }; 892 893 enum queue_stop_reason { 894 IEEE80211_QUEUE_STOP_REASON_DRIVER, 895 IEEE80211_QUEUE_STOP_REASON_PS, 896 IEEE80211_QUEUE_STOP_REASON_CSA, 897 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 898 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 899 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 900 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 901 IEEE80211_QUEUE_STOP_REASON_FLUSH, 902 }; 903 904 #ifdef CONFIG_MAC80211_LEDS 905 struct tpt_led_trigger { 906 struct led_trigger trig; 907 char name[32]; 908 const struct ieee80211_tpt_blink *blink_table; 909 unsigned int blink_table_len; 910 struct timer_list timer; 911 unsigned long prev_traffic; 912 unsigned long tx_bytes, rx_bytes; 913 unsigned int active, want; 914 bool running; 915 }; 916 #endif 917 918 /* 919 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges 920 * 921 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a 922 * certain latency range (in Milliseconds). Each station that uses these 923 * ranges will have bins to count the amount of frames received in that range. 924 * The user can configure the ranges via debugfs. 925 * If ranges is NULL then Tx latency statistics bins are disabled for all 926 * stations. 927 * 928 * @n_ranges: number of ranges that are taken in account 929 * @ranges: the ranges that the user requested or NULL if disabled. 930 */ 931 struct ieee80211_tx_latency_bin_ranges { 932 int n_ranges; 933 u32 ranges[]; 934 }; 935 936 /** 937 * mac80211 scan flags - currently active scan mode 938 * 939 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 940 * well be on the operating channel 941 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 942 * determine if we are on the operating channel or not 943 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 944 * channel. This should not interrupt normal traffic. 945 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 946 * that the scan completed. 947 * @SCAN_ABORTED: Set for our scan work function when the driver reported 948 * a scan complete for an aborted scan. 949 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 950 * cancelled. 951 */ 952 enum { 953 SCAN_SW_SCANNING, 954 SCAN_HW_SCANNING, 955 SCAN_ONCHANNEL_SCANNING, 956 SCAN_COMPLETED, 957 SCAN_ABORTED, 958 SCAN_HW_CANCELLED, 959 }; 960 961 /** 962 * enum mac80211_scan_state - scan state machine states 963 * 964 * @SCAN_DECISION: Main entry point to the scan state machine, this state 965 * determines if we should keep on scanning or switch back to the 966 * operating channel 967 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 968 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 969 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 970 * send out data 971 * @SCAN_RESUME: Resume the scan and scan the next channel 972 * @SCAN_ABORT: Abort the scan and go back to operating channel 973 */ 974 enum mac80211_scan_state { 975 SCAN_DECISION, 976 SCAN_SET_CHANNEL, 977 SCAN_SEND_PROBE, 978 SCAN_SUSPEND, 979 SCAN_RESUME, 980 SCAN_ABORT, 981 }; 982 983 struct ieee80211_local { 984 /* embed the driver visible part. 985 * don't cast (use the static inlines below), but we keep 986 * it first anyway so they become a no-op */ 987 struct ieee80211_hw hw; 988 989 const struct ieee80211_ops *ops; 990 991 /* 992 * private workqueue to mac80211. mac80211 makes this accessible 993 * via ieee80211_queue_work() 994 */ 995 struct workqueue_struct *workqueue; 996 997 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 998 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 999 spinlock_t queue_stop_reason_lock; 1000 1001 int open_count; 1002 int monitors, cooked_mntrs; 1003 /* number of interfaces with corresponding FIF_ flags */ 1004 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1005 fif_probe_req; 1006 int probe_req_reg; 1007 unsigned int filter_flags; /* FIF_* */ 1008 1009 bool wiphy_ciphers_allocated; 1010 1011 bool use_chanctx; 1012 1013 /* protects the aggregated multicast list and filter calls */ 1014 spinlock_t filter_lock; 1015 1016 /* used for uploading changed mc list */ 1017 struct work_struct reconfig_filter; 1018 1019 /* aggregated multicast list */ 1020 struct netdev_hw_addr_list mc_list; 1021 1022 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1023 1024 /* 1025 * suspended is true if we finished all the suspend _and_ we have 1026 * not yet come up from resume. This is to be used by mac80211 1027 * to ensure driver sanity during suspend and mac80211's own 1028 * sanity. It can eventually be used for WoW as well. 1029 */ 1030 bool suspended; 1031 1032 /* 1033 * Resuming is true while suspended, but when we're reprogramming the 1034 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1035 * again even though some other parts of the stack are still suspended 1036 * and we still drop received frames to avoid waking the stack. 1037 */ 1038 bool resuming; 1039 1040 /* 1041 * quiescing is true during the suspend process _only_ to 1042 * ease timer cancelling etc. 1043 */ 1044 bool quiescing; 1045 1046 /* device is started */ 1047 bool started; 1048 1049 /* device is during a HW reconfig */ 1050 bool in_reconfig; 1051 1052 /* wowlan is enabled -- don't reconfig on resume */ 1053 bool wowlan; 1054 1055 /* DFS/radar detection is enabled */ 1056 bool radar_detect_enabled; 1057 struct work_struct radar_detected_work; 1058 1059 /* number of RX chains the hardware has */ 1060 u8 rx_chains; 1061 1062 int tx_headroom; /* required headroom for hardware/radiotap */ 1063 1064 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1065 * added to skb_queue will be processed, but frames in 1066 * skb_queue_unreliable may be dropped if the total length of these 1067 * queues increases over the limit. */ 1068 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1069 struct tasklet_struct tasklet; 1070 struct sk_buff_head skb_queue; 1071 struct sk_buff_head skb_queue_unreliable; 1072 1073 spinlock_t rx_path_lock; 1074 1075 /* Station data */ 1076 /* 1077 * The mutex only protects the list, hash table and 1078 * counter, reads are done with RCU. 1079 */ 1080 struct mutex sta_mtx; 1081 spinlock_t tim_lock; 1082 unsigned long num_sta; 1083 struct list_head sta_list; 1084 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1085 struct timer_list sta_cleanup; 1086 int sta_generation; 1087 1088 /* 1089 * Tx latency statistics parameters for all stations. 1090 * Can enable via debugfs (NULL when disabled). 1091 */ 1092 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency; 1093 1094 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1095 struct tasklet_struct tx_pending_tasklet; 1096 1097 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1098 1099 /* number of interfaces with corresponding IFF_ flags */ 1100 atomic_t iff_allmultis, iff_promiscs; 1101 1102 struct rate_control_ref *rate_ctrl; 1103 1104 struct crypto_cipher *wep_tx_tfm; 1105 struct crypto_cipher *wep_rx_tfm; 1106 u32 wep_iv; 1107 1108 /* see iface.c */ 1109 struct list_head interfaces; 1110 struct mutex iflist_mtx; 1111 1112 /* 1113 * Key mutex, protects sdata's key_list and sta_info's 1114 * key pointers (write access, they're RCU.) 1115 */ 1116 struct mutex key_mtx; 1117 1118 /* mutex for scan and work locking */ 1119 struct mutex mtx; 1120 1121 /* Scanning and BSS list */ 1122 unsigned long scanning; 1123 struct cfg80211_ssid scan_ssid; 1124 struct cfg80211_scan_request *int_scan_req; 1125 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1126 struct cfg80211_chan_def scan_chandef; 1127 enum ieee80211_band hw_scan_band; 1128 int scan_channel_idx; 1129 int scan_ies_len; 1130 int hw_scan_ies_bufsize; 1131 1132 struct work_struct sched_scan_stopped_work; 1133 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1134 struct cfg80211_sched_scan_request *sched_scan_req; 1135 1136 unsigned long leave_oper_channel_time; 1137 enum mac80211_scan_state next_scan_state; 1138 struct delayed_work scan_work; 1139 struct ieee80211_sub_if_data __rcu *scan_sdata; 1140 /* For backward compatibility only -- do not use */ 1141 struct cfg80211_chan_def _oper_chandef; 1142 1143 /* Temporary remain-on-channel for off-channel operations */ 1144 struct ieee80211_channel *tmp_channel; 1145 1146 /* channel contexts */ 1147 struct list_head chanctx_list; 1148 struct mutex chanctx_mtx; 1149 1150 /* SNMP counters */ 1151 /* dot11CountersTable */ 1152 u32 dot11TransmittedFragmentCount; 1153 u32 dot11MulticastTransmittedFrameCount; 1154 u32 dot11FailedCount; 1155 u32 dot11RetryCount; 1156 u32 dot11MultipleRetryCount; 1157 u32 dot11FrameDuplicateCount; 1158 u32 dot11ReceivedFragmentCount; 1159 u32 dot11MulticastReceivedFrameCount; 1160 u32 dot11TransmittedFrameCount; 1161 1162 #ifdef CONFIG_MAC80211_LEDS 1163 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1164 struct tpt_led_trigger *tpt_led_trigger; 1165 char tx_led_name[32], rx_led_name[32], 1166 assoc_led_name[32], radio_led_name[32]; 1167 #endif 1168 1169 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1170 /* TX/RX handler statistics */ 1171 unsigned int tx_handlers_drop; 1172 unsigned int tx_handlers_queued; 1173 unsigned int tx_handlers_drop_unencrypted; 1174 unsigned int tx_handlers_drop_fragment; 1175 unsigned int tx_handlers_drop_wep; 1176 unsigned int tx_handlers_drop_not_assoc; 1177 unsigned int tx_handlers_drop_unauth_port; 1178 unsigned int rx_handlers_drop; 1179 unsigned int rx_handlers_queued; 1180 unsigned int rx_handlers_drop_nullfunc; 1181 unsigned int rx_handlers_drop_defrag; 1182 unsigned int rx_handlers_drop_short; 1183 unsigned int tx_expand_skb_head; 1184 unsigned int tx_expand_skb_head_cloned; 1185 unsigned int rx_expand_skb_head; 1186 unsigned int rx_expand_skb_head2; 1187 unsigned int rx_handlers_fragments; 1188 unsigned int tx_status_drop; 1189 #define I802_DEBUG_INC(c) (c)++ 1190 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1191 #define I802_DEBUG_INC(c) do { } while (0) 1192 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1193 1194 1195 int total_ps_buffered; /* total number of all buffered unicast and 1196 * multicast packets for power saving stations 1197 */ 1198 1199 bool pspolling; 1200 bool offchannel_ps_enabled; 1201 /* 1202 * PS can only be enabled when we have exactly one managed 1203 * interface (and monitors) in PS, this then points there. 1204 */ 1205 struct ieee80211_sub_if_data *ps_sdata; 1206 struct work_struct dynamic_ps_enable_work; 1207 struct work_struct dynamic_ps_disable_work; 1208 struct timer_list dynamic_ps_timer; 1209 struct notifier_block network_latency_notifier; 1210 struct notifier_block ifa_notifier; 1211 struct notifier_block ifa6_notifier; 1212 1213 /* 1214 * The dynamic ps timeout configured from user space via WEXT - 1215 * this will override whatever chosen by mac80211 internally. 1216 */ 1217 int dynamic_ps_forced_timeout; 1218 1219 int user_power_level; /* in dBm, for all interfaces */ 1220 1221 enum ieee80211_smps_mode smps_mode; 1222 1223 struct work_struct restart_work; 1224 1225 #ifdef CONFIG_MAC80211_DEBUGFS 1226 struct local_debugfsdentries { 1227 struct dentry *rcdir; 1228 struct dentry *keys; 1229 } debugfs; 1230 #endif 1231 1232 /* 1233 * Remain-on-channel support 1234 */ 1235 struct list_head roc_list; 1236 struct work_struct hw_roc_start, hw_roc_done; 1237 unsigned long hw_roc_start_time; 1238 u64 roc_cookie_counter; 1239 1240 struct idr ack_status_frames; 1241 spinlock_t ack_status_lock; 1242 1243 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1244 1245 struct napi_struct *napi; 1246 1247 /* virtual monitor interface */ 1248 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1249 struct cfg80211_chan_def monitor_chandef; 1250 }; 1251 1252 static inline struct ieee80211_sub_if_data * 1253 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1254 { 1255 return netdev_priv(dev); 1256 } 1257 1258 static inline struct ieee80211_sub_if_data * 1259 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1260 { 1261 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1262 } 1263 1264 /* this struct represents 802.11n's RA/TID combination */ 1265 struct ieee80211_ra_tid { 1266 u8 ra[ETH_ALEN]; 1267 u16 tid; 1268 }; 1269 1270 /* this struct holds the value parsing from channel switch IE */ 1271 struct ieee80211_csa_ie { 1272 struct cfg80211_chan_def chandef; 1273 u8 mode; 1274 u8 count; 1275 u8 ttl; 1276 u16 pre_value; 1277 }; 1278 1279 /* Parsed Information Elements */ 1280 struct ieee802_11_elems { 1281 const u8 *ie_start; 1282 size_t total_len; 1283 1284 /* pointers to IEs */ 1285 const u8 *ssid; 1286 const u8 *supp_rates; 1287 const u8 *ds_params; 1288 const struct ieee80211_tim_ie *tim; 1289 const u8 *challenge; 1290 const u8 *rsn; 1291 const u8 *erp_info; 1292 const u8 *ext_supp_rates; 1293 const u8 *wmm_info; 1294 const u8 *wmm_param; 1295 const struct ieee80211_ht_cap *ht_cap_elem; 1296 const struct ieee80211_ht_operation *ht_operation; 1297 const struct ieee80211_vht_cap *vht_cap_elem; 1298 const struct ieee80211_vht_operation *vht_operation; 1299 const struct ieee80211_meshconf_ie *mesh_config; 1300 const u8 *mesh_id; 1301 const u8 *peering; 1302 const __le16 *awake_window; 1303 const u8 *preq; 1304 const u8 *prep; 1305 const u8 *perr; 1306 const struct ieee80211_rann_ie *rann; 1307 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1308 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1309 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1310 const u8 *country_elem; 1311 const u8 *pwr_constr_elem; 1312 const struct ieee80211_timeout_interval_ie *timeout_int; 1313 const u8 *opmode_notif; 1314 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1315 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1316 1317 /* length of them, respectively */ 1318 u8 ssid_len; 1319 u8 supp_rates_len; 1320 u8 tim_len; 1321 u8 challenge_len; 1322 u8 rsn_len; 1323 u8 ext_supp_rates_len; 1324 u8 wmm_info_len; 1325 u8 wmm_param_len; 1326 u8 mesh_id_len; 1327 u8 peering_len; 1328 u8 preq_len; 1329 u8 prep_len; 1330 u8 perr_len; 1331 u8 country_elem_len; 1332 1333 /* whether a parse error occurred while retrieving these elements */ 1334 bool parse_error; 1335 }; 1336 1337 static inline struct ieee80211_local *hw_to_local( 1338 struct ieee80211_hw *hw) 1339 { 1340 return container_of(hw, struct ieee80211_local, hw); 1341 } 1342 1343 1344 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1345 { 1346 return ether_addr_equal(raddr, addr) || 1347 is_broadcast_ether_addr(raddr); 1348 } 1349 1350 static inline bool 1351 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1352 { 1353 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1354 status->flag & RX_FLAG_MACTIME_END); 1355 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1356 } 1357 1358 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1359 struct ieee80211_rx_status *status, 1360 unsigned int mpdu_len, 1361 unsigned int mpdu_offset); 1362 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1363 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1364 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1365 u32 changed); 1366 void ieee80211_configure_filter(struct ieee80211_local *local); 1367 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1368 1369 /* STA code */ 1370 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1371 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1372 struct cfg80211_auth_request *req); 1373 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1374 struct cfg80211_assoc_request *req); 1375 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1376 struct cfg80211_deauth_request *req); 1377 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1378 struct cfg80211_disassoc_request *req); 1379 void ieee80211_send_pspoll(struct ieee80211_local *local, 1380 struct ieee80211_sub_if_data *sdata); 1381 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1382 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1383 int ieee80211_max_network_latency(struct notifier_block *nb, 1384 unsigned long data, void *dummy); 1385 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1386 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1387 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1388 struct sk_buff *skb); 1389 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1390 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1391 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1392 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1393 __le16 fc, bool acked); 1394 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1395 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1396 1397 /* IBSS code */ 1398 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1399 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1400 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1401 const u8 *bssid, const u8 *addr, u32 supp_rates); 1402 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1403 struct cfg80211_ibss_params *params); 1404 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1405 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1406 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1407 struct sk_buff *skb); 1408 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1409 struct cfg80211_csa_settings *csa_settings); 1410 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1411 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1412 1413 /* mesh code */ 1414 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1415 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1416 struct sk_buff *skb); 1417 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1418 struct cfg80211_csa_settings *csa_settings); 1419 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1420 1421 /* scan/BSS handling */ 1422 void ieee80211_scan_work(struct work_struct *work); 1423 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1424 const u8 *ssid, u8 ssid_len, 1425 struct ieee80211_channel *chan, 1426 enum nl80211_bss_scan_width scan_width); 1427 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1428 struct cfg80211_scan_request *req); 1429 void ieee80211_scan_cancel(struct ieee80211_local *local); 1430 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1431 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1432 1433 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1434 struct ieee80211_bss * 1435 ieee80211_bss_info_update(struct ieee80211_local *local, 1436 struct ieee80211_rx_status *rx_status, 1437 struct ieee80211_mgmt *mgmt, 1438 size_t len, 1439 struct ieee802_11_elems *elems, 1440 struct ieee80211_channel *channel); 1441 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1442 struct ieee80211_bss *bss); 1443 1444 /* scheduled scan handling */ 1445 int 1446 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1447 struct cfg80211_sched_scan_request *req); 1448 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1449 struct cfg80211_sched_scan_request *req); 1450 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1451 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1452 1453 /* off-channel helpers */ 1454 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1455 void ieee80211_offchannel_return(struct ieee80211_local *local); 1456 void ieee80211_roc_setup(struct ieee80211_local *local); 1457 void ieee80211_start_next_roc(struct ieee80211_local *local); 1458 void ieee80211_roc_purge(struct ieee80211_local *local, 1459 struct ieee80211_sub_if_data *sdata); 1460 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1461 void ieee80211_sw_roc_work(struct work_struct *work); 1462 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1463 1464 /* channel switch handling */ 1465 void ieee80211_csa_finalize_work(struct work_struct *work); 1466 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1467 struct cfg80211_csa_settings *params); 1468 1469 /* interface handling */ 1470 int ieee80211_iface_init(void); 1471 void ieee80211_iface_exit(void); 1472 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1473 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1474 struct vif_params *params); 1475 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1476 enum nl80211_iftype type); 1477 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1478 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1479 u32 ieee80211_idle_off(struct ieee80211_local *local); 1480 void ieee80211_recalc_idle(struct ieee80211_local *local); 1481 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1482 const int offset); 1483 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1484 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1485 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1486 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1487 1488 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1489 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1490 1491 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1492 { 1493 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1494 } 1495 1496 /* tx handling */ 1497 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1498 void ieee80211_tx_pending(unsigned long data); 1499 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1500 struct net_device *dev); 1501 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1502 struct net_device *dev); 1503 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1504 struct sk_buff_head *skbs); 1505 1506 /* HT */ 1507 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1508 struct ieee80211_sta_ht_cap *ht_cap); 1509 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1510 struct ieee80211_supported_band *sband, 1511 const struct ieee80211_ht_cap *ht_cap_ie, 1512 struct sta_info *sta); 1513 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1514 const u8 *da, u16 tid, 1515 u16 initiator, u16 reason_code); 1516 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1517 enum ieee80211_smps_mode smps, const u8 *da, 1518 const u8 *bssid); 1519 void ieee80211_request_smps_ap_work(struct work_struct *work); 1520 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1521 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1522 enum ieee80211_smps_mode smps_mode_new); 1523 1524 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1525 u16 initiator, u16 reason, bool stop); 1526 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1527 u16 initiator, u16 reason, bool stop); 1528 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1529 enum ieee80211_agg_stop_reason reason); 1530 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1531 struct sta_info *sta, 1532 struct ieee80211_mgmt *mgmt, size_t len); 1533 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1534 struct sta_info *sta, 1535 struct ieee80211_mgmt *mgmt, 1536 size_t len); 1537 void ieee80211_process_addba_request(struct ieee80211_local *local, 1538 struct sta_info *sta, 1539 struct ieee80211_mgmt *mgmt, 1540 size_t len); 1541 1542 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1543 enum ieee80211_agg_stop_reason reason); 1544 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1545 enum ieee80211_agg_stop_reason reason); 1546 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1547 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1548 void ieee80211_ba_session_work(struct work_struct *work); 1549 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1550 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1551 1552 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1553 1554 /* VHT */ 1555 void 1556 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1557 struct ieee80211_supported_band *sband, 1558 const struct ieee80211_vht_cap *vht_cap_ie, 1559 struct sta_info *sta); 1560 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1561 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1562 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1563 struct sta_info *sta, u8 opmode, 1564 enum ieee80211_band band, bool nss_only); 1565 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1566 struct sta_info *sta, u8 opmode, 1567 enum ieee80211_band band, bool nss_only); 1568 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1569 struct ieee80211_sta_vht_cap *vht_cap); 1570 1571 /* Spectrum management */ 1572 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1573 struct ieee80211_mgmt *mgmt, 1574 size_t len); 1575 /** 1576 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1577 * @sdata: the sdata of the interface which has received the frame 1578 * @elems: parsed 802.11 elements received with the frame 1579 * @beacon: indicates if the frame was a beacon or probe response 1580 * @current_band: indicates the current band 1581 * @sta_flags: contains information about own capabilities and restrictions 1582 * to decide which channel switch announcements can be accepted. Only the 1583 * following subset of &enum ieee80211_sta_flags are evaluated: 1584 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1585 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1586 * %IEEE80211_STA_DISABLE_160MHZ. 1587 * @bssid: the currently connected bssid (for reporting) 1588 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1589 All of them will be filled with if success only. 1590 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1591 */ 1592 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1593 struct ieee802_11_elems *elems, bool beacon, 1594 enum ieee80211_band current_band, 1595 u32 sta_flags, u8 *bssid, 1596 struct ieee80211_csa_ie *csa_ie); 1597 1598 /* Suspend/resume and hw reconfiguration */ 1599 int ieee80211_reconfig(struct ieee80211_local *local); 1600 void ieee80211_stop_device(struct ieee80211_local *local); 1601 1602 int __ieee80211_suspend(struct ieee80211_hw *hw, 1603 struct cfg80211_wowlan *wowlan); 1604 1605 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1606 { 1607 struct ieee80211_local *local = hw_to_local(hw); 1608 1609 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1610 "%s: resume with hardware scan still in progress\n", 1611 wiphy_name(hw->wiphy)); 1612 1613 return ieee80211_reconfig(hw_to_local(hw)); 1614 } 1615 1616 /* utility functions/constants */ 1617 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1618 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1619 enum nl80211_iftype type); 1620 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1621 int rate, int erp, int short_preamble, 1622 int shift); 1623 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1624 struct ieee80211_hdr *hdr, const u8 *tsc, 1625 gfp_t gfp); 1626 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1627 bool bss_notify); 1628 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1629 enum ieee80211_band band); 1630 1631 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1632 struct sk_buff *skb, int tid, 1633 enum ieee80211_band band); 1634 1635 static inline void 1636 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1637 struct sk_buff *skb, int tid, 1638 enum ieee80211_band band) 1639 { 1640 rcu_read_lock(); 1641 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1642 rcu_read_unlock(); 1643 } 1644 1645 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1646 struct sk_buff *skb, int tid) 1647 { 1648 struct ieee80211_chanctx_conf *chanctx_conf; 1649 1650 rcu_read_lock(); 1651 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1652 if (WARN_ON(!chanctx_conf)) { 1653 rcu_read_unlock(); 1654 kfree_skb(skb); 1655 return; 1656 } 1657 1658 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1659 chanctx_conf->def.chan->band); 1660 rcu_read_unlock(); 1661 } 1662 1663 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1664 struct sk_buff *skb) 1665 { 1666 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1667 ieee80211_tx_skb_tid(sdata, skb, 7); 1668 } 1669 1670 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1671 struct ieee802_11_elems *elems, 1672 u64 filter, u32 crc); 1673 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1674 bool action, 1675 struct ieee802_11_elems *elems) 1676 { 1677 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1678 } 1679 1680 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1681 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1682 void ieee80211_dynamic_ps_timer(unsigned long data); 1683 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1684 struct ieee80211_sub_if_data *sdata, 1685 int powersave); 1686 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1687 struct ieee80211_hdr *hdr); 1688 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1689 struct ieee80211_hdr *hdr, bool ack); 1690 1691 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1692 unsigned long queues, 1693 enum queue_stop_reason reason); 1694 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1695 unsigned long queues, 1696 enum queue_stop_reason reason); 1697 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1698 enum queue_stop_reason reason); 1699 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1700 enum queue_stop_reason reason); 1701 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1702 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1703 struct sk_buff *skb); 1704 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1705 struct sk_buff_head *skbs); 1706 void ieee80211_flush_queues(struct ieee80211_local *local, 1707 struct ieee80211_sub_if_data *sdata); 1708 1709 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1710 u16 transaction, u16 auth_alg, u16 status, 1711 const u8 *extra, size_t extra_len, const u8 *bssid, 1712 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1713 u32 tx_flags); 1714 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1715 const u8 *bssid, u16 stype, u16 reason, 1716 bool send_frame, u8 *frame_buf); 1717 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1718 size_t buffer_len, const u8 *ie, size_t ie_len, 1719 enum ieee80211_band band, u32 rate_mask, 1720 struct cfg80211_chan_def *chandef); 1721 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1722 u8 *dst, u32 ratemask, 1723 struct ieee80211_channel *chan, 1724 const u8 *ssid, size_t ssid_len, 1725 const u8 *ie, size_t ie_len, 1726 bool directed); 1727 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1728 const u8 *ssid, size_t ssid_len, 1729 const u8 *ie, size_t ie_len, 1730 u32 ratemask, bool directed, u32 tx_flags, 1731 struct ieee80211_channel *channel, bool scan); 1732 1733 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1734 struct ieee802_11_elems *elems, 1735 enum ieee80211_band band, u32 *basic_rates); 1736 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 1737 enum ieee80211_smps_mode smps_mode); 1738 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 1739 enum ieee80211_smps_mode smps_mode); 1740 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1741 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 1742 1743 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1744 const u8 *ids, int n_ids, size_t offset); 1745 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1746 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1747 u16 cap); 1748 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1749 const struct cfg80211_chan_def *chandef, 1750 u16 prot_mode); 1751 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1752 u32 cap); 1753 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1754 const struct ieee80211_supported_band *sband, 1755 const u8 *srates, int srates_len, u32 *rates); 1756 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1757 struct sk_buff *skb, bool need_basic, 1758 enum ieee80211_band band); 1759 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1760 struct sk_buff *skb, bool need_basic, 1761 enum ieee80211_band band); 1762 1763 /* channel management */ 1764 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1765 const struct ieee80211_ht_operation *ht_oper, 1766 struct cfg80211_chan_def *chandef); 1767 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 1768 1769 int __must_check 1770 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1771 const struct cfg80211_chan_def *chandef, 1772 enum ieee80211_chanctx_mode mode); 1773 int __must_check 1774 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1775 const struct cfg80211_chan_def *chandef, 1776 u32 *changed); 1777 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1778 int __must_check 1779 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1780 u32 *changed); 1781 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1782 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1783 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1784 bool clear); 1785 1786 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1787 struct ieee80211_chanctx *chanctx); 1788 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 1789 struct ieee80211_chanctx *ctx); 1790 1791 void ieee80211_dfs_cac_timer(unsigned long data); 1792 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1793 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1794 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1795 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 1796 struct cfg80211_csa_settings *csa_settings); 1797 1798 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 1799 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 1800 const struct ieee80211_cipher_scheme * 1801 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 1802 enum nl80211_iftype iftype); 1803 int ieee80211_cs_headroom(struct ieee80211_local *local, 1804 struct cfg80211_crypto_settings *crypto, 1805 enum nl80211_iftype iftype); 1806 void ieee80211_recalc_dtim(struct ieee80211_local *local, 1807 struct ieee80211_sub_if_data *sdata); 1808 1809 #ifdef CONFIG_MAC80211_NOINLINE 1810 #define debug_noinline noinline 1811 #else 1812 #define debug_noinline 1813 #endif 1814 1815 #endif /* IEEE80211_I_H */ 1816