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 rcu_head rcu_head; 236 }; 237 238 struct probe_resp { 239 struct rcu_head rcu_head; 240 int len; 241 u8 data[0]; 242 }; 243 244 struct ps_data { 245 /* yes, this looks ugly, but guarantees that we can later use 246 * bitmap_empty :) 247 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 248 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 249 struct sk_buff_head bc_buf; 250 atomic_t num_sta_ps; /* number of stations in PS mode */ 251 int dtim_count; 252 bool dtim_bc_mc; 253 }; 254 255 struct ieee80211_if_ap { 256 struct beacon_data __rcu *beacon; 257 struct probe_resp __rcu *probe_resp; 258 259 /* to be used after channel switch. */ 260 struct cfg80211_beacon_data *next_beacon; 261 struct list_head vlans; 262 263 struct ps_data ps; 264 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 265 }; 266 267 struct ieee80211_if_wds { 268 struct sta_info *sta; 269 u8 remote_addr[ETH_ALEN]; 270 }; 271 272 struct ieee80211_if_vlan { 273 struct list_head list; 274 275 /* used for all tx if the VLAN is configured to 4-addr mode */ 276 struct sta_info __rcu *sta; 277 }; 278 279 struct mesh_stats { 280 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 281 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 282 __u32 fwded_frames; /* Mesh total forwarded frames */ 283 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 284 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 285 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 286 }; 287 288 #define PREQ_Q_F_START 0x1 289 #define PREQ_Q_F_REFRESH 0x2 290 struct mesh_preq_queue { 291 struct list_head list; 292 u8 dst[ETH_ALEN]; 293 u8 flags; 294 }; 295 296 #if HZ/100 == 0 297 #define IEEE80211_ROC_MIN_LEFT 1 298 #else 299 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 300 #endif 301 302 struct ieee80211_roc_work { 303 struct list_head list; 304 struct list_head dependents; 305 306 struct delayed_work work; 307 308 struct ieee80211_sub_if_data *sdata; 309 310 struct ieee80211_channel *chan; 311 312 bool started, abort, hw_begun, notified; 313 bool to_be_freed; 314 315 unsigned long hw_start_time; 316 317 u32 duration, req_duration; 318 struct sk_buff *frame; 319 u64 cookie, mgmt_tx_cookie; 320 enum ieee80211_roc_type type; 321 }; 322 323 /* flags used in struct ieee80211_if_managed.flags */ 324 enum ieee80211_sta_flags { 325 IEEE80211_STA_BEACON_POLL = BIT(0), 326 IEEE80211_STA_CONNECTION_POLL = BIT(1), 327 IEEE80211_STA_CONTROL_PORT = BIT(2), 328 IEEE80211_STA_DISABLE_HT = BIT(4), 329 IEEE80211_STA_CSA_RECEIVED = BIT(5), 330 IEEE80211_STA_MFP_ENABLED = BIT(6), 331 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 332 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 333 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 334 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 335 IEEE80211_STA_DISABLE_VHT = BIT(11), 336 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 337 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 338 }; 339 340 struct ieee80211_mgd_auth_data { 341 struct cfg80211_bss *bss; 342 unsigned long timeout; 343 int tries; 344 u16 algorithm, expected_transaction; 345 346 u8 key[WLAN_KEY_LEN_WEP104]; 347 u8 key_len, key_idx; 348 bool done; 349 bool timeout_started; 350 351 u16 sae_trans, sae_status; 352 size_t data_len; 353 u8 data[]; 354 }; 355 356 struct ieee80211_mgd_assoc_data { 357 struct cfg80211_bss *bss; 358 const u8 *supp_rates; 359 360 unsigned long timeout; 361 int tries; 362 363 u16 capability; 364 u8 prev_bssid[ETH_ALEN]; 365 u8 ssid[IEEE80211_MAX_SSID_LEN]; 366 u8 ssid_len; 367 u8 supp_rates_len; 368 bool wmm, uapsd; 369 bool need_beacon; 370 bool synced; 371 bool timeout_started; 372 373 u8 ap_ht_param; 374 375 struct ieee80211_vht_cap ap_vht_cap; 376 377 size_t ie_len; 378 u8 ie[]; 379 }; 380 381 struct ieee80211_if_managed { 382 struct timer_list timer; 383 struct timer_list conn_mon_timer; 384 struct timer_list bcn_mon_timer; 385 struct timer_list chswitch_timer; 386 struct work_struct monitor_work; 387 struct work_struct chswitch_work; 388 struct work_struct beacon_connection_loss_work; 389 struct work_struct csa_connection_drop_work; 390 391 unsigned long beacon_timeout; 392 unsigned long probe_timeout; 393 int probe_send_count; 394 bool nullfunc_failed; 395 bool connection_loss; 396 397 struct cfg80211_bss *associated; 398 struct ieee80211_mgd_auth_data *auth_data; 399 struct ieee80211_mgd_assoc_data *assoc_data; 400 401 u8 bssid[ETH_ALEN]; 402 403 u16 aid; 404 405 bool powersave; /* powersave requested for this iface */ 406 bool broken_ap; /* AP is broken -- turn off powersave */ 407 bool have_beacon; 408 u8 dtim_period; 409 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 410 driver_smps_mode; /* smps mode request */ 411 412 struct work_struct request_smps_work; 413 414 unsigned int flags; 415 416 bool beacon_crc_valid; 417 u32 beacon_crc; 418 419 bool status_acked; 420 bool status_received; 421 __le16 status_fc; 422 423 enum { 424 IEEE80211_MFP_DISABLED, 425 IEEE80211_MFP_OPTIONAL, 426 IEEE80211_MFP_REQUIRED 427 } mfp; /* management frame protection */ 428 429 /* 430 * Bitmask of enabled u-apsd queues, 431 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 432 * to take effect. 433 */ 434 unsigned int uapsd_queues; 435 436 /* 437 * Maximum number of buffered frames AP can deliver during a 438 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 439 * Needs a new association to take effect. 440 */ 441 unsigned int uapsd_max_sp_len; 442 443 int wmm_last_param_set; 444 445 u8 use_4addr; 446 447 s16 p2p_noa_index; 448 449 /* Signal strength from the last Beacon frame in the current BSS. */ 450 int last_beacon_signal; 451 452 /* 453 * Weighted average of the signal strength from Beacon frames in the 454 * current BSS. This is in units of 1/16 of the signal unit to maintain 455 * accuracy and to speed up calculations, i.e., the value need to be 456 * divided by 16 to get the actual value. 457 */ 458 int ave_beacon_signal; 459 460 /* 461 * Number of Beacon frames used in ave_beacon_signal. This can be used 462 * to avoid generating less reliable cqm events that would be based 463 * only on couple of received frames. 464 */ 465 unsigned int count_beacon_signal; 466 467 /* 468 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 469 * that triggered a cqm event. 0 indicates that no event has been 470 * generated for the current association. 471 */ 472 int last_cqm_event_signal; 473 474 /* 475 * State variables for keeping track of RSSI of the AP currently 476 * connected to and informing driver when RSSI has gone 477 * below/above a certain threshold. 478 */ 479 int rssi_min_thold, rssi_max_thold; 480 int last_ave_beacon_signal; 481 482 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 483 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 484 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 485 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 486 }; 487 488 struct ieee80211_if_ibss { 489 struct timer_list timer; 490 491 unsigned long last_scan_completed; 492 493 u32 basic_rates; 494 495 bool fixed_bssid; 496 bool fixed_channel; 497 bool privacy; 498 499 bool control_port; 500 501 u8 bssid[ETH_ALEN] __aligned(2); 502 u8 ssid[IEEE80211_MAX_SSID_LEN]; 503 u8 ssid_len, ie_len; 504 u8 *ie; 505 struct cfg80211_chan_def chandef; 506 507 unsigned long ibss_join_req; 508 /* probe response/beacon for IBSS */ 509 struct beacon_data __rcu *presp; 510 511 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 512 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 513 514 spinlock_t incomplete_lock; 515 struct list_head incomplete_stations; 516 517 enum { 518 IEEE80211_IBSS_MLME_SEARCH, 519 IEEE80211_IBSS_MLME_JOINED, 520 } state; 521 }; 522 523 /** 524 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 525 * 526 * these declarations define the interface, which enables 527 * vendor-specific mesh synchronization 528 * 529 */ 530 struct ieee802_11_elems; 531 struct ieee80211_mesh_sync_ops { 532 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 533 u16 stype, 534 struct ieee80211_mgmt *mgmt, 535 struct ieee802_11_elems *elems, 536 struct ieee80211_rx_status *rx_status); 537 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 538 /* add other framework functions here */ 539 }; 540 541 struct ieee80211_if_mesh { 542 struct timer_list housekeeping_timer; 543 struct timer_list mesh_path_timer; 544 struct timer_list mesh_path_root_timer; 545 546 unsigned long wrkq_flags; 547 unsigned long mbss_changed; 548 549 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 550 size_t mesh_id_len; 551 /* Active Path Selection Protocol Identifier */ 552 u8 mesh_pp_id; 553 /* Active Path Selection Metric Identifier */ 554 u8 mesh_pm_id; 555 /* Congestion Control Mode Identifier */ 556 u8 mesh_cc_id; 557 /* Synchronization Protocol Identifier */ 558 u8 mesh_sp_id; 559 /* Authentication Protocol Identifier */ 560 u8 mesh_auth_id; 561 /* Local mesh Sequence Number */ 562 u32 sn; 563 /* Last used PREQ ID */ 564 u32 preq_id; 565 atomic_t mpaths; 566 /* Timestamp of last SN update */ 567 unsigned long last_sn_update; 568 /* Time when it's ok to send next PERR */ 569 unsigned long next_perr; 570 /* Timestamp of last PREQ sent */ 571 unsigned long last_preq; 572 struct mesh_rmc *rmc; 573 spinlock_t mesh_preq_queue_lock; 574 struct mesh_preq_queue preq_queue; 575 int preq_queue_len; 576 struct mesh_stats mshstats; 577 struct mesh_config mshcfg; 578 atomic_t estab_plinks; 579 u32 mesh_seqnum; 580 bool accepting_plinks; 581 int num_gates; 582 struct beacon_data __rcu *beacon; 583 const u8 *ie; 584 u8 ie_len; 585 enum { 586 IEEE80211_MESH_SEC_NONE = 0x0, 587 IEEE80211_MESH_SEC_AUTHED = 0x1, 588 IEEE80211_MESH_SEC_SECURED = 0x2, 589 } security; 590 bool user_mpm; 591 /* Extensible Synchronization Framework */ 592 const struct ieee80211_mesh_sync_ops *sync_ops; 593 s64 sync_offset_clockdrift_max; 594 spinlock_t sync_offset_lock; 595 bool adjusting_tbtt; 596 /* mesh power save */ 597 enum nl80211_mesh_power_mode nonpeer_pm; 598 int ps_peers_light_sleep; 599 int ps_peers_deep_sleep; 600 struct ps_data ps; 601 }; 602 603 #ifdef CONFIG_MAC80211_MESH 604 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 605 do { (msh)->mshstats.name++; } while (0) 606 #else 607 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 608 do { } while (0) 609 #endif 610 611 /** 612 * enum ieee80211_sub_if_data_flags - virtual interface flags 613 * 614 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 615 * @IEEE80211_SDATA_PROMISC: interface is promisc 616 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 617 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 618 * associated stations and deliver multicast frames both 619 * back to wireless media and to the local net stack. 620 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 621 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 622 */ 623 enum ieee80211_sub_if_data_flags { 624 IEEE80211_SDATA_ALLMULTI = BIT(0), 625 IEEE80211_SDATA_PROMISC = BIT(1), 626 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 627 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 628 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 629 IEEE80211_SDATA_IN_DRIVER = BIT(5), 630 }; 631 632 /** 633 * enum ieee80211_sdata_state_bits - virtual interface state bits 634 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 635 * mirrors netif_running() but is separate for interface type 636 * change handling while the interface is up 637 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 638 * mode, so queues are stopped 639 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 640 * to offchannel, reset when offchannel returns 641 */ 642 enum ieee80211_sdata_state_bits { 643 SDATA_STATE_RUNNING, 644 SDATA_STATE_OFFCHANNEL, 645 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 646 }; 647 648 /** 649 * enum ieee80211_chanctx_mode - channel context configuration mode 650 * 651 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 652 * multiple interfaces 653 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 654 * only by a single interface. This can be used for example for 655 * non-fixed channel IBSS. 656 */ 657 enum ieee80211_chanctx_mode { 658 IEEE80211_CHANCTX_SHARED, 659 IEEE80211_CHANCTX_EXCLUSIVE 660 }; 661 662 struct ieee80211_chanctx { 663 struct list_head list; 664 struct rcu_head rcu_head; 665 666 enum ieee80211_chanctx_mode mode; 667 int refcount; 668 bool driver_present; 669 670 struct ieee80211_chanctx_conf conf; 671 }; 672 673 struct ieee80211_sub_if_data { 674 struct list_head list; 675 676 struct wireless_dev wdev; 677 678 /* keys */ 679 struct list_head key_list; 680 681 /* count for keys needing tailroom space allocation */ 682 int crypto_tx_tailroom_needed_cnt; 683 int crypto_tx_tailroom_pending_dec; 684 struct delayed_work dec_tailroom_needed_wk; 685 686 struct net_device *dev; 687 struct ieee80211_local *local; 688 689 unsigned int flags; 690 691 unsigned long state; 692 693 int drop_unencrypted; 694 695 char name[IFNAMSIZ]; 696 697 /* Fragment table for host-based reassembly */ 698 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 699 unsigned int fragment_next; 700 701 /* TID bitmap for NoAck policy */ 702 u16 noack_map; 703 704 /* bit field of ACM bits (BIT(802.1D tag)) */ 705 u8 wmm_acm; 706 707 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 708 struct ieee80211_key __rcu *default_unicast_key; 709 struct ieee80211_key __rcu *default_multicast_key; 710 struct ieee80211_key __rcu *default_mgmt_key; 711 712 u16 sequence_number; 713 __be16 control_port_protocol; 714 bool control_port_no_encrypt; 715 716 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 717 718 struct work_struct csa_finalize_work; 719 int csa_counter_offset_beacon; 720 int csa_counter_offset_presp; 721 bool csa_radar_required; 722 723 /* used to reconfigure hardware SM PS */ 724 struct work_struct recalc_smps; 725 726 struct work_struct work; 727 struct sk_buff_head skb_queue; 728 729 u8 needed_rx_chains; 730 enum ieee80211_smps_mode smps_mode; 731 732 int user_power_level; /* in dBm */ 733 int ap_power_level; /* in dBm */ 734 735 bool radar_required; 736 struct delayed_work dfs_cac_timer_work; 737 738 /* 739 * AP this belongs to: self in AP mode and 740 * corresponding AP in VLAN mode, NULL for 741 * all others (might be needed later in IBSS) 742 */ 743 struct ieee80211_if_ap *bss; 744 745 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 746 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 747 748 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS]; 749 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 750 751 union { 752 struct ieee80211_if_ap ap; 753 struct ieee80211_if_wds wds; 754 struct ieee80211_if_vlan vlan; 755 struct ieee80211_if_managed mgd; 756 struct ieee80211_if_ibss ibss; 757 struct ieee80211_if_mesh mesh; 758 u32 mntr_flags; 759 } u; 760 761 spinlock_t cleanup_stations_lock; 762 struct list_head cleanup_stations; 763 struct work_struct cleanup_stations_wk; 764 765 #ifdef CONFIG_MAC80211_DEBUGFS 766 struct { 767 struct dentry *subdir_stations; 768 struct dentry *default_unicast_key; 769 struct dentry *default_multicast_key; 770 struct dentry *default_mgmt_key; 771 } debugfs; 772 #endif 773 774 /* must be last, dynamically sized area in this! */ 775 struct ieee80211_vif vif; 776 }; 777 778 static inline 779 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 780 { 781 return container_of(p, struct ieee80211_sub_if_data, vif); 782 } 783 784 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 785 __acquires(&sdata->wdev.mtx) 786 { 787 mutex_lock(&sdata->wdev.mtx); 788 __acquire(&sdata->wdev.mtx); 789 } 790 791 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 792 __releases(&sdata->wdev.mtx) 793 { 794 mutex_unlock(&sdata->wdev.mtx); 795 __release(&sdata->wdev.mtx); 796 } 797 798 static inline void 799 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 800 { 801 lockdep_assert_held(&sdata->wdev.mtx); 802 } 803 804 static inline enum ieee80211_band 805 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 806 { 807 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 808 struct ieee80211_chanctx_conf *chanctx_conf; 809 810 rcu_read_lock(); 811 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 812 if (!WARN_ON(!chanctx_conf)) 813 band = chanctx_conf->def.chan->band; 814 rcu_read_unlock(); 815 816 return band; 817 } 818 819 static inline int 820 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 821 { 822 switch (chandef->width) { 823 case NL80211_CHAN_WIDTH_5: 824 return 2; 825 case NL80211_CHAN_WIDTH_10: 826 return 1; 827 default: 828 return 0; 829 } 830 } 831 832 static inline int 833 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 834 { 835 struct ieee80211_chanctx_conf *chanctx_conf; 836 int shift = 0; 837 838 rcu_read_lock(); 839 chanctx_conf = rcu_dereference(vif->chanctx_conf); 840 if (chanctx_conf) 841 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 842 rcu_read_unlock(); 843 844 return shift; 845 } 846 847 enum sdata_queue_type { 848 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 849 IEEE80211_SDATA_QUEUE_AGG_START = 1, 850 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 851 }; 852 853 enum { 854 IEEE80211_RX_MSG = 1, 855 IEEE80211_TX_STATUS_MSG = 2, 856 }; 857 858 enum queue_stop_reason { 859 IEEE80211_QUEUE_STOP_REASON_DRIVER, 860 IEEE80211_QUEUE_STOP_REASON_PS, 861 IEEE80211_QUEUE_STOP_REASON_CSA, 862 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 863 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 864 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 865 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 866 IEEE80211_QUEUE_STOP_REASON_FLUSH, 867 }; 868 869 #ifdef CONFIG_MAC80211_LEDS 870 struct tpt_led_trigger { 871 struct led_trigger trig; 872 char name[32]; 873 const struct ieee80211_tpt_blink *blink_table; 874 unsigned int blink_table_len; 875 struct timer_list timer; 876 unsigned long prev_traffic; 877 unsigned long tx_bytes, rx_bytes; 878 unsigned int active, want; 879 bool running; 880 }; 881 #endif 882 883 /** 884 * mac80211 scan flags - currently active scan mode 885 * 886 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 887 * well be on the operating channel 888 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 889 * determine if we are on the operating channel or not 890 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 891 * channel. This should not interrupt normal traffic. 892 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 893 * that the scan completed. 894 * @SCAN_ABORTED: Set for our scan work function when the driver reported 895 * a scan complete for an aborted scan. 896 */ 897 enum { 898 SCAN_SW_SCANNING, 899 SCAN_HW_SCANNING, 900 SCAN_ONCHANNEL_SCANNING, 901 SCAN_COMPLETED, 902 SCAN_ABORTED, 903 }; 904 905 /** 906 * enum mac80211_scan_state - scan state machine states 907 * 908 * @SCAN_DECISION: Main entry point to the scan state machine, this state 909 * determines if we should keep on scanning or switch back to the 910 * operating channel 911 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 912 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 913 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 914 * send out data 915 * @SCAN_RESUME: Resume the scan and scan the next channel 916 * @SCAN_ABORT: Abort the scan and go back to operating channel 917 */ 918 enum mac80211_scan_state { 919 SCAN_DECISION, 920 SCAN_SET_CHANNEL, 921 SCAN_SEND_PROBE, 922 SCAN_SUSPEND, 923 SCAN_RESUME, 924 SCAN_ABORT, 925 }; 926 927 struct ieee80211_local { 928 /* embed the driver visible part. 929 * don't cast (use the static inlines below), but we keep 930 * it first anyway so they become a no-op */ 931 struct ieee80211_hw hw; 932 933 const struct ieee80211_ops *ops; 934 935 /* 936 * private workqueue to mac80211. mac80211 makes this accessible 937 * via ieee80211_queue_work() 938 */ 939 struct workqueue_struct *workqueue; 940 941 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 942 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 943 spinlock_t queue_stop_reason_lock; 944 945 int open_count; 946 int monitors, cooked_mntrs; 947 /* number of interfaces with corresponding FIF_ flags */ 948 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 949 fif_probe_req; 950 int probe_req_reg; 951 unsigned int filter_flags; /* FIF_* */ 952 953 bool wiphy_ciphers_allocated; 954 955 bool use_chanctx; 956 957 /* protects the aggregated multicast list and filter calls */ 958 spinlock_t filter_lock; 959 960 /* used for uploading changed mc list */ 961 struct work_struct reconfig_filter; 962 963 /* aggregated multicast list */ 964 struct netdev_hw_addr_list mc_list; 965 966 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 967 968 /* 969 * suspended is true if we finished all the suspend _and_ we have 970 * not yet come up from resume. This is to be used by mac80211 971 * to ensure driver sanity during suspend and mac80211's own 972 * sanity. It can eventually be used for WoW as well. 973 */ 974 bool suspended; 975 976 /* 977 * Resuming is true while suspended, but when we're reprogramming the 978 * hardware -- at that time it's allowed to use ieee80211_queue_work() 979 * again even though some other parts of the stack are still suspended 980 * and we still drop received frames to avoid waking the stack. 981 */ 982 bool resuming; 983 984 /* 985 * quiescing is true during the suspend process _only_ to 986 * ease timer cancelling etc. 987 */ 988 bool quiescing; 989 990 /* device is started */ 991 bool started; 992 993 /* device is during a HW reconfig */ 994 bool in_reconfig; 995 996 /* wowlan is enabled -- don't reconfig on resume */ 997 bool wowlan; 998 999 /* DFS/radar detection is enabled */ 1000 bool radar_detect_enabled; 1001 struct work_struct radar_detected_work; 1002 1003 /* number of RX chains the hardware has */ 1004 u8 rx_chains; 1005 1006 int tx_headroom; /* required headroom for hardware/radiotap */ 1007 1008 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1009 * added to skb_queue will be processed, but frames in 1010 * skb_queue_unreliable may be dropped if the total length of these 1011 * queues increases over the limit. */ 1012 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1013 struct tasklet_struct tasklet; 1014 struct sk_buff_head skb_queue; 1015 struct sk_buff_head skb_queue_unreliable; 1016 1017 spinlock_t rx_path_lock; 1018 1019 /* Station data */ 1020 /* 1021 * The mutex only protects the list, hash table and 1022 * counter, reads are done with RCU. 1023 */ 1024 struct mutex sta_mtx; 1025 spinlock_t tim_lock; 1026 unsigned long num_sta; 1027 struct list_head sta_list; 1028 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1029 struct timer_list sta_cleanup; 1030 int sta_generation; 1031 1032 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1033 struct tasklet_struct tx_pending_tasklet; 1034 1035 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1036 1037 /* number of interfaces with corresponding IFF_ flags */ 1038 atomic_t iff_allmultis, iff_promiscs; 1039 1040 struct rate_control_ref *rate_ctrl; 1041 1042 struct crypto_cipher *wep_tx_tfm; 1043 struct crypto_cipher *wep_rx_tfm; 1044 u32 wep_iv; 1045 1046 /* see iface.c */ 1047 struct list_head interfaces; 1048 struct mutex iflist_mtx; 1049 1050 /* 1051 * Key mutex, protects sdata's key_list and sta_info's 1052 * key pointers (write access, they're RCU.) 1053 */ 1054 struct mutex key_mtx; 1055 1056 /* mutex for scan and work locking */ 1057 struct mutex mtx; 1058 1059 /* Scanning and BSS list */ 1060 unsigned long scanning; 1061 struct cfg80211_ssid scan_ssid; 1062 struct cfg80211_scan_request *int_scan_req; 1063 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1064 struct cfg80211_chan_def scan_chandef; 1065 enum ieee80211_band hw_scan_band; 1066 int scan_channel_idx; 1067 int scan_ies_len; 1068 int hw_scan_ies_bufsize; 1069 1070 struct work_struct sched_scan_stopped_work; 1071 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1072 1073 unsigned long leave_oper_channel_time; 1074 enum mac80211_scan_state next_scan_state; 1075 struct delayed_work scan_work; 1076 struct ieee80211_sub_if_data __rcu *scan_sdata; 1077 struct cfg80211_chan_def csa_chandef; 1078 /* For backward compatibility only -- do not use */ 1079 struct cfg80211_chan_def _oper_chandef; 1080 1081 /* Temporary remain-on-channel for off-channel operations */ 1082 struct ieee80211_channel *tmp_channel; 1083 1084 /* channel contexts */ 1085 struct list_head chanctx_list; 1086 struct mutex chanctx_mtx; 1087 1088 /* SNMP counters */ 1089 /* dot11CountersTable */ 1090 u32 dot11TransmittedFragmentCount; 1091 u32 dot11MulticastTransmittedFrameCount; 1092 u32 dot11FailedCount; 1093 u32 dot11RetryCount; 1094 u32 dot11MultipleRetryCount; 1095 u32 dot11FrameDuplicateCount; 1096 u32 dot11ReceivedFragmentCount; 1097 u32 dot11MulticastReceivedFrameCount; 1098 u32 dot11TransmittedFrameCount; 1099 1100 #ifdef CONFIG_MAC80211_LEDS 1101 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1102 struct tpt_led_trigger *tpt_led_trigger; 1103 char tx_led_name[32], rx_led_name[32], 1104 assoc_led_name[32], radio_led_name[32]; 1105 #endif 1106 1107 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1108 /* TX/RX handler statistics */ 1109 unsigned int tx_handlers_drop; 1110 unsigned int tx_handlers_queued; 1111 unsigned int tx_handlers_drop_unencrypted; 1112 unsigned int tx_handlers_drop_fragment; 1113 unsigned int tx_handlers_drop_wep; 1114 unsigned int tx_handlers_drop_not_assoc; 1115 unsigned int tx_handlers_drop_unauth_port; 1116 unsigned int rx_handlers_drop; 1117 unsigned int rx_handlers_queued; 1118 unsigned int rx_handlers_drop_nullfunc; 1119 unsigned int rx_handlers_drop_defrag; 1120 unsigned int rx_handlers_drop_short; 1121 unsigned int tx_expand_skb_head; 1122 unsigned int tx_expand_skb_head_cloned; 1123 unsigned int rx_expand_skb_head; 1124 unsigned int rx_expand_skb_head2; 1125 unsigned int rx_handlers_fragments; 1126 unsigned int tx_status_drop; 1127 #define I802_DEBUG_INC(c) (c)++ 1128 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1129 #define I802_DEBUG_INC(c) do { } while (0) 1130 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1131 1132 1133 int total_ps_buffered; /* total number of all buffered unicast and 1134 * multicast packets for power saving stations 1135 */ 1136 1137 bool pspolling; 1138 bool offchannel_ps_enabled; 1139 /* 1140 * PS can only be enabled when we have exactly one managed 1141 * interface (and monitors) in PS, this then points there. 1142 */ 1143 struct ieee80211_sub_if_data *ps_sdata; 1144 struct work_struct dynamic_ps_enable_work; 1145 struct work_struct dynamic_ps_disable_work; 1146 struct timer_list dynamic_ps_timer; 1147 struct notifier_block network_latency_notifier; 1148 struct notifier_block ifa_notifier; 1149 struct notifier_block ifa6_notifier; 1150 1151 /* 1152 * The dynamic ps timeout configured from user space via WEXT - 1153 * this will override whatever chosen by mac80211 internally. 1154 */ 1155 int dynamic_ps_forced_timeout; 1156 1157 int user_power_level; /* in dBm, for all interfaces */ 1158 1159 enum ieee80211_smps_mode smps_mode; 1160 1161 struct work_struct restart_work; 1162 1163 #ifdef CONFIG_MAC80211_DEBUGFS 1164 struct local_debugfsdentries { 1165 struct dentry *rcdir; 1166 struct dentry *keys; 1167 } debugfs; 1168 #endif 1169 1170 /* 1171 * Remain-on-channel support 1172 */ 1173 struct list_head roc_list; 1174 struct work_struct hw_roc_start, hw_roc_done; 1175 unsigned long hw_roc_start_time; 1176 u64 roc_cookie_counter; 1177 1178 struct idr ack_status_frames; 1179 spinlock_t ack_status_lock; 1180 1181 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1182 1183 /* virtual monitor interface */ 1184 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1185 struct cfg80211_chan_def monitor_chandef; 1186 }; 1187 1188 static inline struct ieee80211_sub_if_data * 1189 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1190 { 1191 return netdev_priv(dev); 1192 } 1193 1194 static inline struct ieee80211_sub_if_data * 1195 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1196 { 1197 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1198 } 1199 1200 /* this struct represents 802.11n's RA/TID combination */ 1201 struct ieee80211_ra_tid { 1202 u8 ra[ETH_ALEN]; 1203 u16 tid; 1204 }; 1205 1206 /* Parsed Information Elements */ 1207 struct ieee802_11_elems { 1208 const u8 *ie_start; 1209 size_t total_len; 1210 1211 /* pointers to IEs */ 1212 const u8 *ssid; 1213 const u8 *supp_rates; 1214 const u8 *ds_params; 1215 const struct ieee80211_tim_ie *tim; 1216 const u8 *challenge; 1217 const u8 *rsn; 1218 const u8 *erp_info; 1219 const u8 *ext_supp_rates; 1220 const u8 *wmm_info; 1221 const u8 *wmm_param; 1222 const struct ieee80211_ht_cap *ht_cap_elem; 1223 const struct ieee80211_ht_operation *ht_operation; 1224 const struct ieee80211_vht_cap *vht_cap_elem; 1225 const struct ieee80211_vht_operation *vht_operation; 1226 const struct ieee80211_meshconf_ie *mesh_config; 1227 const u8 *mesh_id; 1228 const u8 *peering; 1229 const __le16 *awake_window; 1230 const u8 *preq; 1231 const u8 *prep; 1232 const u8 *perr; 1233 const struct ieee80211_rann_ie *rann; 1234 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1235 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1236 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1237 const u8 *country_elem; 1238 const u8 *pwr_constr_elem; 1239 const struct ieee80211_timeout_interval_ie *timeout_int; 1240 const u8 *opmode_notif; 1241 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1242 1243 /* length of them, respectively */ 1244 u8 ssid_len; 1245 u8 supp_rates_len; 1246 u8 tim_len; 1247 u8 challenge_len; 1248 u8 rsn_len; 1249 u8 ext_supp_rates_len; 1250 u8 wmm_info_len; 1251 u8 wmm_param_len; 1252 u8 mesh_id_len; 1253 u8 peering_len; 1254 u8 preq_len; 1255 u8 prep_len; 1256 u8 perr_len; 1257 u8 country_elem_len; 1258 1259 /* whether a parse error occurred while retrieving these elements */ 1260 bool parse_error; 1261 }; 1262 1263 static inline struct ieee80211_local *hw_to_local( 1264 struct ieee80211_hw *hw) 1265 { 1266 return container_of(hw, struct ieee80211_local, hw); 1267 } 1268 1269 1270 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1271 { 1272 return ether_addr_equal(raddr, addr) || 1273 is_broadcast_ether_addr(raddr); 1274 } 1275 1276 static inline bool 1277 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1278 { 1279 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1280 status->flag & RX_FLAG_MACTIME_END); 1281 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1282 } 1283 1284 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1285 struct ieee80211_rx_status *status, 1286 unsigned int mpdu_len, 1287 unsigned int mpdu_offset); 1288 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1289 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1290 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1291 u32 changed); 1292 void ieee80211_configure_filter(struct ieee80211_local *local); 1293 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1294 1295 /* STA code */ 1296 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1297 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1298 struct cfg80211_auth_request *req); 1299 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1300 struct cfg80211_assoc_request *req); 1301 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1302 struct cfg80211_deauth_request *req); 1303 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1304 struct cfg80211_disassoc_request *req); 1305 void ieee80211_send_pspoll(struct ieee80211_local *local, 1306 struct ieee80211_sub_if_data *sdata); 1307 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1308 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1309 int ieee80211_max_network_latency(struct notifier_block *nb, 1310 unsigned long data, void *dummy); 1311 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1312 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1313 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1314 struct sk_buff *skb); 1315 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1316 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1317 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1318 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1319 __le16 fc, bool acked); 1320 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1321 1322 /* IBSS code */ 1323 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1324 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1325 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1326 const u8 *bssid, const u8 *addr, u32 supp_rates); 1327 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1328 struct cfg80211_ibss_params *params); 1329 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1330 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1331 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1332 struct sk_buff *skb); 1333 1334 /* mesh code */ 1335 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1336 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1337 struct sk_buff *skb); 1338 1339 /* scan/BSS handling */ 1340 void ieee80211_scan_work(struct work_struct *work); 1341 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1342 const u8 *ssid, u8 ssid_len, 1343 struct ieee80211_channel *chan, 1344 enum nl80211_bss_scan_width scan_width); 1345 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1346 struct cfg80211_scan_request *req); 1347 void ieee80211_scan_cancel(struct ieee80211_local *local); 1348 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1349 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1350 1351 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1352 struct ieee80211_bss * 1353 ieee80211_bss_info_update(struct ieee80211_local *local, 1354 struct ieee80211_rx_status *rx_status, 1355 struct ieee80211_mgmt *mgmt, 1356 size_t len, 1357 struct ieee802_11_elems *elems, 1358 struct ieee80211_channel *channel); 1359 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1360 struct ieee80211_bss *bss); 1361 1362 /* scheduled scan handling */ 1363 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1364 struct cfg80211_sched_scan_request *req); 1365 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1366 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1367 1368 /* off-channel helpers */ 1369 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1370 void ieee80211_offchannel_return(struct ieee80211_local *local); 1371 void ieee80211_roc_setup(struct ieee80211_local *local); 1372 void ieee80211_start_next_roc(struct ieee80211_local *local); 1373 void ieee80211_roc_purge(struct ieee80211_local *local, 1374 struct ieee80211_sub_if_data *sdata); 1375 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1376 void ieee80211_sw_roc_work(struct work_struct *work); 1377 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1378 1379 /* channel switch handling */ 1380 void ieee80211_csa_finalize_work(struct work_struct *work); 1381 1382 /* interface handling */ 1383 int ieee80211_iface_init(void); 1384 void ieee80211_iface_exit(void); 1385 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1386 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1387 struct vif_params *params); 1388 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1389 enum nl80211_iftype type); 1390 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1391 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1392 u32 ieee80211_idle_off(struct ieee80211_local *local); 1393 void ieee80211_recalc_idle(struct ieee80211_local *local); 1394 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1395 const int offset); 1396 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1397 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1398 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1399 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1400 1401 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1402 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1403 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 1404 struct cfg80211_beacon_data *params); 1405 1406 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1407 { 1408 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1409 } 1410 1411 /* tx handling */ 1412 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1413 void ieee80211_tx_pending(unsigned long data); 1414 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1415 struct net_device *dev); 1416 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1417 struct net_device *dev); 1418 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1419 struct sk_buff_head *skbs); 1420 1421 /* HT */ 1422 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1423 struct ieee80211_sta_ht_cap *ht_cap); 1424 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1425 struct ieee80211_supported_band *sband, 1426 const struct ieee80211_ht_cap *ht_cap_ie, 1427 struct sta_info *sta); 1428 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1429 const u8 *da, u16 tid, 1430 u16 initiator, u16 reason_code); 1431 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1432 enum ieee80211_smps_mode smps, const u8 *da, 1433 const u8 *bssid); 1434 void ieee80211_request_smps_work(struct work_struct *work); 1435 1436 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1437 u16 initiator, u16 reason, bool stop); 1438 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1439 u16 initiator, u16 reason, bool stop); 1440 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1441 enum ieee80211_agg_stop_reason reason); 1442 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1443 struct sta_info *sta, 1444 struct ieee80211_mgmt *mgmt, size_t len); 1445 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1446 struct sta_info *sta, 1447 struct ieee80211_mgmt *mgmt, 1448 size_t len); 1449 void ieee80211_process_addba_request(struct ieee80211_local *local, 1450 struct sta_info *sta, 1451 struct ieee80211_mgmt *mgmt, 1452 size_t len); 1453 1454 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1455 enum ieee80211_agg_stop_reason reason); 1456 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1457 enum ieee80211_agg_stop_reason reason); 1458 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1459 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1460 void ieee80211_ba_session_work(struct work_struct *work); 1461 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1462 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1463 1464 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1465 1466 /* VHT */ 1467 void 1468 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1469 struct ieee80211_supported_band *sband, 1470 const struct ieee80211_vht_cap *vht_cap_ie, 1471 struct sta_info *sta); 1472 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1473 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1474 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1475 struct sta_info *sta, u8 opmode, 1476 enum ieee80211_band band, bool nss_only); 1477 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1478 struct ieee80211_sta_vht_cap *vht_cap); 1479 1480 /* Spectrum management */ 1481 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1482 struct ieee80211_mgmt *mgmt, 1483 size_t len); 1484 1485 /* Suspend/resume and hw reconfiguration */ 1486 int ieee80211_reconfig(struct ieee80211_local *local); 1487 void ieee80211_stop_device(struct ieee80211_local *local); 1488 1489 int __ieee80211_suspend(struct ieee80211_hw *hw, 1490 struct cfg80211_wowlan *wowlan); 1491 1492 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1493 { 1494 struct ieee80211_local *local = hw_to_local(hw); 1495 1496 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1497 "%s: resume with hardware scan still in progress\n", 1498 wiphy_name(hw->wiphy)); 1499 1500 return ieee80211_reconfig(hw_to_local(hw)); 1501 } 1502 1503 /* utility functions/constants */ 1504 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1505 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1506 enum nl80211_iftype type); 1507 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1508 int rate, int erp, int short_preamble, 1509 int shift); 1510 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1511 struct ieee80211_hdr *hdr, const u8 *tsc, 1512 gfp_t gfp); 1513 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1514 bool bss_notify); 1515 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1516 enum ieee80211_band band); 1517 1518 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1519 struct sk_buff *skb, int tid, 1520 enum ieee80211_band band); 1521 1522 static inline void 1523 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1524 struct sk_buff *skb, int tid, 1525 enum ieee80211_band band) 1526 { 1527 rcu_read_lock(); 1528 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1529 rcu_read_unlock(); 1530 } 1531 1532 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1533 struct sk_buff *skb, int tid) 1534 { 1535 struct ieee80211_chanctx_conf *chanctx_conf; 1536 1537 rcu_read_lock(); 1538 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1539 if (WARN_ON(!chanctx_conf)) { 1540 rcu_read_unlock(); 1541 kfree_skb(skb); 1542 return; 1543 } 1544 1545 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1546 chanctx_conf->def.chan->band); 1547 rcu_read_unlock(); 1548 } 1549 1550 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1551 struct sk_buff *skb) 1552 { 1553 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1554 ieee80211_tx_skb_tid(sdata, skb, 7); 1555 } 1556 1557 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1558 struct ieee802_11_elems *elems, 1559 u64 filter, u32 crc); 1560 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1561 bool action, 1562 struct ieee802_11_elems *elems) 1563 { 1564 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1565 } 1566 1567 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1568 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1569 void ieee80211_dynamic_ps_timer(unsigned long data); 1570 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1571 struct ieee80211_sub_if_data *sdata, 1572 int powersave); 1573 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1574 struct ieee80211_hdr *hdr); 1575 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1576 struct ieee80211_hdr *hdr, bool ack); 1577 1578 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1579 unsigned long queues, 1580 enum queue_stop_reason reason); 1581 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1582 unsigned long queues, 1583 enum queue_stop_reason reason); 1584 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1585 enum queue_stop_reason reason); 1586 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1587 enum queue_stop_reason reason); 1588 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1589 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1590 struct sk_buff *skb); 1591 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1592 struct sk_buff_head *skbs, 1593 void (*fn)(void *data), void *data); 1594 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1595 struct sk_buff_head *skbs) 1596 { 1597 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1598 } 1599 void ieee80211_flush_queues(struct ieee80211_local *local, 1600 struct ieee80211_sub_if_data *sdata); 1601 1602 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1603 u16 transaction, u16 auth_alg, u16 status, 1604 const u8 *extra, size_t extra_len, const u8 *bssid, 1605 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1606 u32 tx_flags); 1607 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1608 const u8 *bssid, u16 stype, u16 reason, 1609 bool send_frame, u8 *frame_buf); 1610 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1611 size_t buffer_len, const u8 *ie, size_t ie_len, 1612 enum ieee80211_band band, u32 rate_mask, 1613 struct cfg80211_chan_def *chandef); 1614 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1615 u8 *dst, u32 ratemask, 1616 struct ieee80211_channel *chan, 1617 const u8 *ssid, size_t ssid_len, 1618 const u8 *ie, size_t ie_len, 1619 bool directed); 1620 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1621 const u8 *ssid, size_t ssid_len, 1622 const u8 *ie, size_t ie_len, 1623 u32 ratemask, bool directed, u32 tx_flags, 1624 struct ieee80211_channel *channel, bool scan); 1625 1626 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1627 struct ieee802_11_elems *elems, 1628 enum ieee80211_band band, u32 *basic_rates); 1629 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1630 enum ieee80211_smps_mode smps_mode); 1631 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1632 1633 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1634 const u8 *ids, int n_ids, size_t offset); 1635 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1636 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1637 u16 cap); 1638 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1639 const struct cfg80211_chan_def *chandef, 1640 u16 prot_mode); 1641 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1642 u32 cap); 1643 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1644 const struct ieee80211_supported_band *sband, 1645 const u8 *srates, int srates_len, u32 *rates); 1646 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1647 struct sk_buff *skb, bool need_basic, 1648 enum ieee80211_band band); 1649 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1650 struct sk_buff *skb, bool need_basic, 1651 enum ieee80211_band band); 1652 1653 /* channel management */ 1654 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1655 const struct ieee80211_ht_operation *ht_oper, 1656 struct cfg80211_chan_def *chandef); 1657 1658 int __must_check 1659 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1660 const struct cfg80211_chan_def *chandef, 1661 enum ieee80211_chanctx_mode mode); 1662 int __must_check 1663 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1664 const struct cfg80211_chan_def *chandef, 1665 u32 *changed); 1666 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1667 int __must_check 1668 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1669 const struct cfg80211_chan_def *chandef, 1670 u32 *changed); 1671 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1672 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1673 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1674 bool clear); 1675 1676 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1677 struct ieee80211_chanctx *chanctx); 1678 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1679 struct ieee80211_chanctx *chanctx); 1680 1681 void ieee80211_dfs_cac_timer(unsigned long data); 1682 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1683 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1684 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1685 1686 #ifdef CONFIG_MAC80211_NOINLINE 1687 #define debug_noinline noinline 1688 #else 1689 #define debug_noinline 1690 #endif 1691 1692 #endif /* IEEE80211_I_H */ 1693