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 #define TU_TO_JIFFIES(x) (usecs_to_jiffies((x) * 1024)) 57 #define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x)) 58 59 /* power level hasn't been configured (or set to automatic) */ 60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 61 62 /* 63 * Some APs experience problems when working with U-APSD. Decrease the 64 * probability of that happening by using legacy mode for all ACs but VO. 65 * The AP that caused us trouble was a Cisco 4410N. It ignores our 66 * setting, and always treats non-VO ACs as legacy. 67 */ 68 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 69 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 70 71 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 72 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 73 74 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 75 76 struct ieee80211_fragment_entry { 77 unsigned long first_frag_time; 78 unsigned int seq; 79 unsigned int rx_queue; 80 unsigned int last_frag; 81 unsigned int extra_len; 82 struct sk_buff_head skb_list; 83 int ccmp; /* Whether fragments were encrypted with CCMP */ 84 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 85 }; 86 87 88 struct ieee80211_bss { 89 u32 device_ts_beacon, device_ts_presp; 90 91 bool wmm_used; 92 bool uapsd_supported; 93 94 #define IEEE80211_MAX_SUPP_RATES 32 95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 96 size_t supp_rates_len; 97 98 /* 99 * During association, we save an ERP value from a probe response so 100 * that we can feed ERP info to the driver when handling the 101 * association completes. these fields probably won't be up-to-date 102 * otherwise, you probably don't want to use them. 103 */ 104 bool has_erp_value; 105 u8 erp_value; 106 107 /* Keep track of the corruption of the last beacon/probe response. */ 108 u8 corrupt_data; 109 110 /* Keep track of what bits of information we have valid info for. */ 111 u8 valid_data; 112 }; 113 114 /** 115 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 116 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 117 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 118 * 119 * These are bss flags that are attached to a bss in the 120 * @corrupt_data field of &struct ieee80211_bss. 121 */ 122 enum ieee80211_bss_corrupt_data_flags { 123 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 124 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 125 }; 126 127 /** 128 * enum ieee80211_valid_data_flags - BSS valid data flags 129 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 130 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 131 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 132 * 133 * These are bss flags that are attached to a bss in the 134 * @valid_data field of &struct ieee80211_bss. They show which parts 135 * of the data structure were recieved as a result of an un-corrupted 136 * beacon/probe response. 137 */ 138 enum ieee80211_bss_valid_data_flags { 139 IEEE80211_BSS_VALID_WMM = BIT(1), 140 IEEE80211_BSS_VALID_RATES = BIT(2), 141 IEEE80211_BSS_VALID_ERP = BIT(3) 142 }; 143 144 typedef unsigned __bitwise__ ieee80211_tx_result; 145 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 146 #define TX_DROP ((__force ieee80211_tx_result) 1u) 147 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 148 149 #define IEEE80211_TX_UNICAST BIT(1) 150 #define IEEE80211_TX_PS_BUFFERED BIT(2) 151 152 struct ieee80211_tx_data { 153 struct sk_buff *skb; 154 struct sk_buff_head skbs; 155 struct ieee80211_local *local; 156 struct ieee80211_sub_if_data *sdata; 157 struct sta_info *sta; 158 struct ieee80211_key *key; 159 160 unsigned int flags; 161 }; 162 163 164 typedef unsigned __bitwise__ ieee80211_rx_result; 165 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 166 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 167 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 168 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 169 170 /** 171 * enum ieee80211_packet_rx_flags - packet RX flags 172 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 173 * (incl. multicast frames) 174 * @IEEE80211_RX_FRAGMENTED: fragmented frame 175 * @IEEE80211_RX_AMSDU: a-MSDU packet 176 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 177 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 178 * 179 * These are per-frame flags that are attached to a frame in the 180 * @rx_flags field of &struct ieee80211_rx_status. 181 */ 182 enum ieee80211_packet_rx_flags { 183 IEEE80211_RX_RA_MATCH = BIT(1), 184 IEEE80211_RX_FRAGMENTED = BIT(2), 185 IEEE80211_RX_AMSDU = BIT(3), 186 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 187 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 188 }; 189 190 /** 191 * enum ieee80211_rx_flags - RX data flags 192 * 193 * @IEEE80211_RX_CMNTR: received on cooked monitor already 194 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 195 * to cfg80211_report_obss_beacon(). 196 * 197 * These flags are used across handling multiple interfaces 198 * for a single frame. 199 */ 200 enum ieee80211_rx_flags { 201 IEEE80211_RX_CMNTR = BIT(0), 202 IEEE80211_RX_BEACON_REPORTED = BIT(1), 203 }; 204 205 struct ieee80211_rx_data { 206 struct sk_buff *skb; 207 struct ieee80211_local *local; 208 struct ieee80211_sub_if_data *sdata; 209 struct sta_info *sta; 210 struct ieee80211_key *key; 211 212 unsigned int flags; 213 214 /* 215 * Index into sequence numbers array, 0..16 216 * since the last (16) is used for non-QoS, 217 * will be 16 on non-QoS frames. 218 */ 219 int seqno_idx; 220 221 /* 222 * Index into the security IV/PN arrays, 0..16 223 * since the last (16) is used for CCMP-encrypted 224 * management frames, will be set to 16 on mgmt 225 * frames and 0 on non-QoS frames. 226 */ 227 int security_idx; 228 229 u32 tkip_iv32; 230 u16 tkip_iv16; 231 }; 232 233 struct beacon_data { 234 u8 *head, *tail; 235 int head_len, tail_len; 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 struct sk_buff_head bc_buf; 251 atomic_t num_sta_ps; /* number of stations in PS mode */ 252 int dtim_count; 253 bool dtim_bc_mc; 254 }; 255 256 struct ieee80211_if_ap { 257 struct beacon_data __rcu *beacon; 258 struct probe_resp __rcu *probe_resp; 259 260 struct list_head vlans; 261 262 struct ps_data ps; 263 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 264 }; 265 266 struct ieee80211_if_wds { 267 struct sta_info *sta; 268 u8 remote_addr[ETH_ALEN]; 269 }; 270 271 struct ieee80211_if_vlan { 272 struct list_head list; 273 274 /* used for all tx if the VLAN is configured to 4-addr mode */ 275 struct sta_info __rcu *sta; 276 }; 277 278 struct mesh_stats { 279 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 280 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 281 __u32 fwded_frames; /* Mesh total forwarded frames */ 282 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 283 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 284 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 285 }; 286 287 #define PREQ_Q_F_START 0x1 288 #define PREQ_Q_F_REFRESH 0x2 289 struct mesh_preq_queue { 290 struct list_head list; 291 u8 dst[ETH_ALEN]; 292 u8 flags; 293 }; 294 295 #if HZ/100 == 0 296 #define IEEE80211_ROC_MIN_LEFT 1 297 #else 298 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 299 #endif 300 301 struct ieee80211_roc_work { 302 struct list_head list; 303 struct list_head dependents; 304 305 struct delayed_work work; 306 307 struct ieee80211_sub_if_data *sdata; 308 309 struct ieee80211_channel *chan; 310 311 bool started, abort, hw_begun, notified; 312 313 unsigned long hw_start_time; 314 315 u32 duration, req_duration; 316 struct sk_buff *frame; 317 u64 cookie, mgmt_tx_cookie; 318 }; 319 320 /* flags used in struct ieee80211_if_managed.flags */ 321 enum ieee80211_sta_flags { 322 IEEE80211_STA_BEACON_POLL = BIT(0), 323 IEEE80211_STA_CONNECTION_POLL = BIT(1), 324 IEEE80211_STA_CONTROL_PORT = BIT(2), 325 IEEE80211_STA_DISABLE_HT = BIT(4), 326 IEEE80211_STA_CSA_RECEIVED = BIT(5), 327 IEEE80211_STA_MFP_ENABLED = BIT(6), 328 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 329 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 330 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 331 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 332 IEEE80211_STA_DISABLE_VHT = BIT(11), 333 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 334 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 335 }; 336 337 struct ieee80211_mgd_auth_data { 338 struct cfg80211_bss *bss; 339 unsigned long timeout; 340 int tries; 341 u16 algorithm, expected_transaction; 342 343 u8 key[WLAN_KEY_LEN_WEP104]; 344 u8 key_len, key_idx; 345 bool done; 346 bool timeout_started; 347 348 u16 sae_trans, sae_status; 349 size_t data_len; 350 u8 data[]; 351 }; 352 353 struct ieee80211_mgd_assoc_data { 354 struct cfg80211_bss *bss; 355 const u8 *supp_rates; 356 357 unsigned long timeout; 358 int tries; 359 360 u16 capability; 361 u8 prev_bssid[ETH_ALEN]; 362 u8 ssid[IEEE80211_MAX_SSID_LEN]; 363 u8 ssid_len; 364 u8 supp_rates_len; 365 bool wmm, uapsd; 366 bool have_beacon, need_beacon; 367 bool synced; 368 bool timeout_started; 369 370 u8 ap_ht_param; 371 372 struct ieee80211_vht_cap ap_vht_cap; 373 374 size_t ie_len; 375 u8 ie[]; 376 }; 377 378 struct ieee80211_if_managed { 379 struct timer_list timer; 380 struct timer_list conn_mon_timer; 381 struct timer_list bcn_mon_timer; 382 struct timer_list chswitch_timer; 383 struct work_struct monitor_work; 384 struct work_struct chswitch_work; 385 struct work_struct beacon_connection_loss_work; 386 struct work_struct csa_connection_drop_work; 387 388 unsigned long beacon_timeout; 389 unsigned long probe_timeout; 390 int probe_send_count; 391 bool nullfunc_failed; 392 bool connection_loss; 393 394 struct mutex mtx; 395 struct cfg80211_bss *associated; 396 struct ieee80211_mgd_auth_data *auth_data; 397 struct ieee80211_mgd_assoc_data *assoc_data; 398 399 u8 bssid[ETH_ALEN]; 400 401 u16 aid; 402 403 unsigned long timers_running; /* used for quiesce/restart */ 404 bool powersave; /* powersave requested for this iface */ 405 bool broken_ap; /* AP is broken -- turn off powersave */ 406 u8 dtim_period; 407 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 408 driver_smps_mode; /* smps mode request */ 409 410 struct work_struct request_smps_work; 411 412 unsigned int flags; 413 414 bool beacon_crc_valid; 415 u32 beacon_crc; 416 417 bool status_acked; 418 bool status_received; 419 __le16 status_fc; 420 421 enum { 422 IEEE80211_MFP_DISABLED, 423 IEEE80211_MFP_OPTIONAL, 424 IEEE80211_MFP_REQUIRED 425 } mfp; /* management frame protection */ 426 427 /* 428 * Bitmask of enabled u-apsd queues, 429 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 430 * to take effect. 431 */ 432 unsigned int uapsd_queues; 433 434 /* 435 * Maximum number of buffered frames AP can deliver during a 436 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 437 * Needs a new association to take effect. 438 */ 439 unsigned int uapsd_max_sp_len; 440 441 int wmm_last_param_set; 442 443 u8 use_4addr; 444 445 u8 p2p_noa_index; 446 447 /* Signal strength from the last Beacon frame in the current BSS. */ 448 int last_beacon_signal; 449 450 /* 451 * Weighted average of the signal strength from Beacon frames in the 452 * current BSS. This is in units of 1/16 of the signal unit to maintain 453 * accuracy and to speed up calculations, i.e., the value need to be 454 * divided by 16 to get the actual value. 455 */ 456 int ave_beacon_signal; 457 458 /* 459 * Number of Beacon frames used in ave_beacon_signal. This can be used 460 * to avoid generating less reliable cqm events that would be based 461 * only on couple of received frames. 462 */ 463 unsigned int count_beacon_signal; 464 465 /* 466 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 467 * that triggered a cqm event. 0 indicates that no event has been 468 * generated for the current association. 469 */ 470 int last_cqm_event_signal; 471 472 /* 473 * State variables for keeping track of RSSI of the AP currently 474 * connected to and informing driver when RSSI has gone 475 * below/above a certain threshold. 476 */ 477 int rssi_min_thold, rssi_max_thold; 478 int last_ave_beacon_signal; 479 480 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 481 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 482 }; 483 484 struct ieee80211_if_ibss { 485 struct timer_list timer; 486 487 struct mutex mtx; 488 489 unsigned long last_scan_completed; 490 491 u32 basic_rates; 492 493 bool timer_running; 494 495 bool fixed_bssid; 496 bool fixed_channel; 497 bool privacy; 498 499 bool control_port; 500 unsigned int auth_frame_registrations; 501 502 u8 bssid[ETH_ALEN] __aligned(2); 503 u8 ssid[IEEE80211_MAX_SSID_LEN]; 504 u8 ssid_len, ie_len; 505 u8 *ie; 506 struct ieee80211_channel *channel; 507 enum nl80211_channel_type channel_type; 508 509 unsigned long ibss_join_req; 510 /* probe response/beacon for IBSS */ 511 struct sk_buff __rcu *presp; 512 struct sk_buff *skb; 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 timers_running; 547 548 unsigned long wrkq_flags; 549 550 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 551 size_t mesh_id_len; 552 /* Active Path Selection Protocol Identifier */ 553 u8 mesh_pp_id; 554 /* Active Path Selection Metric Identifier */ 555 u8 mesh_pm_id; 556 /* Congestion Control Mode Identifier */ 557 u8 mesh_cc_id; 558 /* Synchronization Protocol Identifier */ 559 u8 mesh_sp_id; 560 /* Authentication Protocol Identifier */ 561 u8 mesh_auth_id; 562 /* Local mesh Sequence Number */ 563 u32 sn; 564 /* Last used PREQ ID */ 565 u32 preq_id; 566 atomic_t mpaths; 567 /* Timestamp of last SN update */ 568 unsigned long last_sn_update; 569 /* Time when it's ok to send next PERR */ 570 unsigned long next_perr; 571 /* Timestamp of last PREQ sent */ 572 unsigned long last_preq; 573 struct mesh_rmc *rmc; 574 spinlock_t mesh_preq_queue_lock; 575 struct mesh_preq_queue preq_queue; 576 int preq_queue_len; 577 struct mesh_stats mshstats; 578 struct mesh_config mshcfg; 579 atomic_t estab_plinks; 580 u32 mesh_seqnum; 581 bool accepting_plinks; 582 int num_gates; 583 struct beacon_data __rcu *beacon; 584 /* just protects beacon updates for now */ 585 struct mutex mtx; 586 const u8 *ie; 587 u8 ie_len; 588 enum { 589 IEEE80211_MESH_SEC_NONE = 0x0, 590 IEEE80211_MESH_SEC_AUTHED = 0x1, 591 IEEE80211_MESH_SEC_SECURED = 0x2, 592 } security; 593 /* Extensible Synchronization Framework */ 594 const struct ieee80211_mesh_sync_ops *sync_ops; 595 s64 sync_offset_clockdrift_max; 596 spinlock_t sync_offset_lock; 597 bool adjusting_tbtt; 598 /* mesh power save */ 599 enum nl80211_mesh_power_mode nonpeer_pm; 600 int ps_peers_light_sleep; 601 int ps_peers_deep_sleep; 602 struct ps_data ps; 603 }; 604 605 #ifdef CONFIG_MAC80211_MESH 606 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 607 do { (msh)->mshstats.name++; } while (0) 608 #else 609 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 610 do { } while (0) 611 #endif 612 613 /** 614 * enum ieee80211_sub_if_data_flags - virtual interface flags 615 * 616 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 617 * @IEEE80211_SDATA_PROMISC: interface is promisc 618 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 619 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 620 * associated stations and deliver multicast frames both 621 * back to wireless media and to the local net stack. 622 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 623 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 624 */ 625 enum ieee80211_sub_if_data_flags { 626 IEEE80211_SDATA_ALLMULTI = BIT(0), 627 IEEE80211_SDATA_PROMISC = BIT(1), 628 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 629 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 630 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 631 IEEE80211_SDATA_IN_DRIVER = BIT(5), 632 }; 633 634 /** 635 * enum ieee80211_sdata_state_bits - virtual interface state bits 636 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 637 * mirrors netif_running() but is separate for interface type 638 * change handling while the interface is up 639 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 640 * mode, so queues are stopped 641 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 642 * to offchannel, reset when offchannel returns 643 */ 644 enum ieee80211_sdata_state_bits { 645 SDATA_STATE_RUNNING, 646 SDATA_STATE_OFFCHANNEL, 647 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 648 }; 649 650 /** 651 * enum ieee80211_chanctx_mode - channel context configuration mode 652 * 653 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 654 * multiple interfaces 655 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 656 * only by a single interface. This can be used for example for 657 * non-fixed channel IBSS. 658 */ 659 enum ieee80211_chanctx_mode { 660 IEEE80211_CHANCTX_SHARED, 661 IEEE80211_CHANCTX_EXCLUSIVE 662 }; 663 664 struct ieee80211_chanctx { 665 struct list_head list; 666 struct rcu_head rcu_head; 667 668 enum ieee80211_chanctx_mode mode; 669 int refcount; 670 bool driver_present; 671 672 struct ieee80211_chanctx_conf conf; 673 }; 674 675 struct ieee80211_sub_if_data { 676 struct list_head list; 677 678 struct wireless_dev wdev; 679 680 /* keys */ 681 struct list_head key_list; 682 683 /* count for keys needing tailroom space allocation */ 684 int crypto_tx_tailroom_needed_cnt; 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 /* used to reconfigure hardware SM PS */ 719 struct work_struct recalc_smps; 720 721 struct work_struct work; 722 struct sk_buff_head skb_queue; 723 724 u8 needed_rx_chains; 725 enum ieee80211_smps_mode smps_mode; 726 727 int user_power_level; /* in dBm */ 728 int ap_power_level; /* in dBm */ 729 730 bool radar_required; 731 struct delayed_work dfs_cac_timer_work; 732 733 /* 734 * AP this belongs to: self in AP mode and 735 * corresponding AP in VLAN mode, NULL for 736 * all others (might be needed later in IBSS) 737 */ 738 struct ieee80211_if_ap *bss; 739 740 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 741 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 742 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 743 744 union { 745 struct ieee80211_if_ap ap; 746 struct ieee80211_if_wds wds; 747 struct ieee80211_if_vlan vlan; 748 struct ieee80211_if_managed mgd; 749 struct ieee80211_if_ibss ibss; 750 struct ieee80211_if_mesh mesh; 751 u32 mntr_flags; 752 } u; 753 754 spinlock_t cleanup_stations_lock; 755 struct list_head cleanup_stations; 756 struct work_struct cleanup_stations_wk; 757 758 #ifdef CONFIG_MAC80211_DEBUGFS 759 struct { 760 struct dentry *dir; 761 struct dentry *subdir_stations; 762 struct dentry *default_unicast_key; 763 struct dentry *default_multicast_key; 764 struct dentry *default_mgmt_key; 765 } debugfs; 766 #endif 767 768 #ifdef CONFIG_PM 769 struct ieee80211_bss_conf suspend_bss_conf; 770 #endif 771 772 /* must be last, dynamically sized area in this! */ 773 struct ieee80211_vif vif; 774 }; 775 776 static inline 777 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 778 { 779 return container_of(p, struct ieee80211_sub_if_data, vif); 780 } 781 782 static inline enum ieee80211_band 783 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 784 { 785 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 786 struct ieee80211_chanctx_conf *chanctx_conf; 787 788 rcu_read_lock(); 789 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 790 if (!WARN_ON(!chanctx_conf)) 791 band = chanctx_conf->def.chan->band; 792 rcu_read_unlock(); 793 794 return band; 795 } 796 797 enum sdata_queue_type { 798 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 799 IEEE80211_SDATA_QUEUE_AGG_START = 1, 800 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 801 }; 802 803 enum { 804 IEEE80211_RX_MSG = 1, 805 IEEE80211_TX_STATUS_MSG = 2, 806 IEEE80211_EOSP_MSG = 3, 807 }; 808 809 struct skb_eosp_msg_data { 810 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 811 }; 812 813 enum queue_stop_reason { 814 IEEE80211_QUEUE_STOP_REASON_DRIVER, 815 IEEE80211_QUEUE_STOP_REASON_PS, 816 IEEE80211_QUEUE_STOP_REASON_CSA, 817 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 818 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 819 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 820 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 821 }; 822 823 #ifdef CONFIG_MAC80211_LEDS 824 struct tpt_led_trigger { 825 struct led_trigger trig; 826 char name[32]; 827 const struct ieee80211_tpt_blink *blink_table; 828 unsigned int blink_table_len; 829 struct timer_list timer; 830 unsigned long prev_traffic; 831 unsigned long tx_bytes, rx_bytes; 832 unsigned int active, want; 833 bool running; 834 }; 835 #endif 836 837 /** 838 * mac80211 scan flags - currently active scan mode 839 * 840 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 841 * well be on the operating channel 842 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 843 * determine if we are on the operating channel or not 844 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 845 * channel. This should not interrupt normal traffic. 846 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 847 * that the scan completed. 848 * @SCAN_ABORTED: Set for our scan work function when the driver reported 849 * a scan complete for an aborted scan. 850 */ 851 enum { 852 SCAN_SW_SCANNING, 853 SCAN_HW_SCANNING, 854 SCAN_ONCHANNEL_SCANNING, 855 SCAN_COMPLETED, 856 SCAN_ABORTED, 857 }; 858 859 /** 860 * enum mac80211_scan_state - scan state machine states 861 * 862 * @SCAN_DECISION: Main entry point to the scan state machine, this state 863 * determines if we should keep on scanning or switch back to the 864 * operating channel 865 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 866 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 867 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 868 * send out data 869 * @SCAN_RESUME: Resume the scan and scan the next channel 870 * @SCAN_ABORT: Abort the scan and go back to operating channel 871 */ 872 enum mac80211_scan_state { 873 SCAN_DECISION, 874 SCAN_SET_CHANNEL, 875 SCAN_SEND_PROBE, 876 SCAN_SUSPEND, 877 SCAN_RESUME, 878 SCAN_ABORT, 879 }; 880 881 struct ieee80211_local { 882 /* embed the driver visible part. 883 * don't cast (use the static inlines below), but we keep 884 * it first anyway so they become a no-op */ 885 struct ieee80211_hw hw; 886 887 const struct ieee80211_ops *ops; 888 889 /* 890 * private workqueue to mac80211. mac80211 makes this accessible 891 * via ieee80211_queue_work() 892 */ 893 struct workqueue_struct *workqueue; 894 895 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 896 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 897 spinlock_t queue_stop_reason_lock; 898 899 int open_count; 900 int monitors, cooked_mntrs; 901 /* number of interfaces with corresponding FIF_ flags */ 902 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 903 fif_probe_req; 904 int probe_req_reg; 905 unsigned int filter_flags; /* FIF_* */ 906 907 bool wiphy_ciphers_allocated; 908 909 bool use_chanctx; 910 911 /* protects the aggregated multicast list and filter calls */ 912 spinlock_t filter_lock; 913 914 /* used for uploading changed mc list */ 915 struct work_struct reconfig_filter; 916 917 /* aggregated multicast list */ 918 struct netdev_hw_addr_list mc_list; 919 920 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 921 922 /* 923 * suspended is true if we finished all the suspend _and_ we have 924 * not yet come up from resume. This is to be used by mac80211 925 * to ensure driver sanity during suspend and mac80211's own 926 * sanity. It can eventually be used for WoW as well. 927 */ 928 bool suspended; 929 930 /* 931 * Resuming is true while suspended, but when we're reprogramming the 932 * hardware -- at that time it's allowed to use ieee80211_queue_work() 933 * again even though some other parts of the stack are still suspended 934 * and we still drop received frames to avoid waking the stack. 935 */ 936 bool resuming; 937 938 /* 939 * quiescing is true during the suspend process _only_ to 940 * ease timer cancelling etc. 941 */ 942 bool quiescing; 943 944 /* device is started */ 945 bool started; 946 947 /* device is during a HW reconfig */ 948 bool in_reconfig; 949 950 /* wowlan is enabled -- don't reconfig on resume */ 951 bool wowlan; 952 953 /* DFS/radar detection is enabled */ 954 bool radar_detect_enabled; 955 struct work_struct radar_detected_work; 956 957 /* number of RX chains the hardware has */ 958 u8 rx_chains; 959 960 int tx_headroom; /* required headroom for hardware/radiotap */ 961 962 /* Tasklet and skb queue to process calls from IRQ mode. All frames 963 * added to skb_queue will be processed, but frames in 964 * skb_queue_unreliable may be dropped if the total length of these 965 * queues increases over the limit. */ 966 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 967 struct tasklet_struct tasklet; 968 struct sk_buff_head skb_queue; 969 struct sk_buff_head skb_queue_unreliable; 970 971 spinlock_t rx_path_lock; 972 973 /* Station data */ 974 /* 975 * The mutex only protects the list, hash table and 976 * counter, reads are done with RCU. 977 */ 978 struct mutex sta_mtx; 979 spinlock_t tim_lock; 980 unsigned long num_sta; 981 struct list_head sta_list; 982 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 983 struct timer_list sta_cleanup; 984 int sta_generation; 985 986 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 987 struct tasklet_struct tx_pending_tasklet; 988 989 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 990 991 /* number of interfaces with corresponding IFF_ flags */ 992 atomic_t iff_allmultis, iff_promiscs; 993 994 struct rate_control_ref *rate_ctrl; 995 996 struct crypto_cipher *wep_tx_tfm; 997 struct crypto_cipher *wep_rx_tfm; 998 u32 wep_iv; 999 1000 /* see iface.c */ 1001 struct list_head interfaces; 1002 struct mutex iflist_mtx; 1003 1004 /* 1005 * Key mutex, protects sdata's key_list and sta_info's 1006 * key pointers (write access, they're RCU.) 1007 */ 1008 struct mutex key_mtx; 1009 1010 /* mutex for scan and work locking */ 1011 struct mutex mtx; 1012 1013 /* Scanning and BSS list */ 1014 unsigned long scanning; 1015 struct cfg80211_ssid scan_ssid; 1016 struct cfg80211_scan_request *int_scan_req; 1017 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1018 struct ieee80211_channel *scan_channel; 1019 enum ieee80211_band hw_scan_band; 1020 int scan_channel_idx; 1021 int scan_ies_len; 1022 int hw_scan_ies_bufsize; 1023 1024 struct work_struct sched_scan_stopped_work; 1025 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1026 1027 unsigned long leave_oper_channel_time; 1028 enum mac80211_scan_state next_scan_state; 1029 struct delayed_work scan_work; 1030 struct ieee80211_sub_if_data __rcu *scan_sdata; 1031 struct ieee80211_channel *csa_channel; 1032 /* For backward compatibility only -- do not use */ 1033 struct ieee80211_channel *_oper_channel; 1034 enum nl80211_channel_type _oper_channel_type; 1035 1036 /* Temporary remain-on-channel for off-channel operations */ 1037 struct ieee80211_channel *tmp_channel; 1038 1039 /* channel contexts */ 1040 struct list_head chanctx_list; 1041 struct mutex chanctx_mtx; 1042 1043 /* SNMP counters */ 1044 /* dot11CountersTable */ 1045 u32 dot11TransmittedFragmentCount; 1046 u32 dot11MulticastTransmittedFrameCount; 1047 u32 dot11FailedCount; 1048 u32 dot11RetryCount; 1049 u32 dot11MultipleRetryCount; 1050 u32 dot11FrameDuplicateCount; 1051 u32 dot11ReceivedFragmentCount; 1052 u32 dot11MulticastReceivedFrameCount; 1053 u32 dot11TransmittedFrameCount; 1054 1055 #ifdef CONFIG_MAC80211_LEDS 1056 int tx_led_counter, rx_led_counter; 1057 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1058 struct tpt_led_trigger *tpt_led_trigger; 1059 char tx_led_name[32], rx_led_name[32], 1060 assoc_led_name[32], radio_led_name[32]; 1061 #endif 1062 1063 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1064 /* TX/RX handler statistics */ 1065 unsigned int tx_handlers_drop; 1066 unsigned int tx_handlers_queued; 1067 unsigned int tx_handlers_drop_unencrypted; 1068 unsigned int tx_handlers_drop_fragment; 1069 unsigned int tx_handlers_drop_wep; 1070 unsigned int tx_handlers_drop_not_assoc; 1071 unsigned int tx_handlers_drop_unauth_port; 1072 unsigned int rx_handlers_drop; 1073 unsigned int rx_handlers_queued; 1074 unsigned int rx_handlers_drop_nullfunc; 1075 unsigned int rx_handlers_drop_defrag; 1076 unsigned int rx_handlers_drop_short; 1077 unsigned int tx_expand_skb_head; 1078 unsigned int tx_expand_skb_head_cloned; 1079 unsigned int rx_expand_skb_head; 1080 unsigned int rx_expand_skb_head2; 1081 unsigned int rx_handlers_fragments; 1082 unsigned int tx_status_drop; 1083 #define I802_DEBUG_INC(c) (c)++ 1084 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1085 #define I802_DEBUG_INC(c) do { } while (0) 1086 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1087 1088 1089 int total_ps_buffered; /* total number of all buffered unicast and 1090 * multicast packets for power saving stations 1091 */ 1092 1093 bool pspolling; 1094 bool offchannel_ps_enabled; 1095 /* 1096 * PS can only be enabled when we have exactly one managed 1097 * interface (and monitors) in PS, this then points there. 1098 */ 1099 struct ieee80211_sub_if_data *ps_sdata; 1100 struct work_struct dynamic_ps_enable_work; 1101 struct work_struct dynamic_ps_disable_work; 1102 struct timer_list dynamic_ps_timer; 1103 struct notifier_block network_latency_notifier; 1104 struct notifier_block ifa_notifier; 1105 struct notifier_block ifa6_notifier; 1106 1107 /* 1108 * The dynamic ps timeout configured from user space via WEXT - 1109 * this will override whatever chosen by mac80211 internally. 1110 */ 1111 int dynamic_ps_forced_timeout; 1112 1113 int user_power_level; /* in dBm, for all interfaces */ 1114 1115 enum ieee80211_smps_mode smps_mode; 1116 1117 struct work_struct restart_work; 1118 1119 #ifdef CONFIG_MAC80211_DEBUGFS 1120 struct local_debugfsdentries { 1121 struct dentry *rcdir; 1122 struct dentry *keys; 1123 } debugfs; 1124 #endif 1125 1126 /* 1127 * Remain-on-channel support 1128 */ 1129 struct list_head roc_list; 1130 struct work_struct hw_roc_start, hw_roc_done; 1131 unsigned long hw_roc_start_time; 1132 u64 roc_cookie_counter; 1133 1134 struct idr ack_status_frames; 1135 spinlock_t ack_status_lock; 1136 1137 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1138 1139 /* dummy netdev for use w/ NAPI */ 1140 struct net_device napi_dev; 1141 1142 struct napi_struct napi; 1143 1144 /* virtual monitor interface */ 1145 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1146 struct cfg80211_chan_def monitor_chandef; 1147 }; 1148 1149 static inline struct ieee80211_sub_if_data * 1150 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1151 { 1152 return netdev_priv(dev); 1153 } 1154 1155 static inline struct ieee80211_sub_if_data * 1156 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1157 { 1158 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1159 } 1160 1161 /* this struct represents 802.11n's RA/TID combination */ 1162 struct ieee80211_ra_tid { 1163 u8 ra[ETH_ALEN]; 1164 u16 tid; 1165 }; 1166 1167 /* Parsed Information Elements */ 1168 struct ieee802_11_elems { 1169 const u8 *ie_start; 1170 size_t total_len; 1171 1172 /* pointers to IEs */ 1173 const u8 *ssid; 1174 const u8 *supp_rates; 1175 const u8 *fh_params; 1176 const u8 *ds_params; 1177 const u8 *cf_params; 1178 const struct ieee80211_tim_ie *tim; 1179 const u8 *ibss_params; 1180 const u8 *challenge; 1181 const u8 *rsn; 1182 const u8 *erp_info; 1183 const u8 *ext_supp_rates; 1184 const u8 *wmm_info; 1185 const u8 *wmm_param; 1186 const struct ieee80211_ht_cap *ht_cap_elem; 1187 const struct ieee80211_ht_operation *ht_operation; 1188 const struct ieee80211_vht_cap *vht_cap_elem; 1189 const struct ieee80211_vht_operation *vht_operation; 1190 const struct ieee80211_meshconf_ie *mesh_config; 1191 const u8 *mesh_id; 1192 const u8 *peering; 1193 const __le16 *awake_window; 1194 const u8 *preq; 1195 const u8 *prep; 1196 const u8 *perr; 1197 const struct ieee80211_rann_ie *rann; 1198 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1199 const u8 *country_elem; 1200 const u8 *pwr_constr_elem; 1201 const u8 *quiet_elem; /* first quite element */ 1202 const u8 *timeout_int; 1203 const u8 *opmode_notif; 1204 1205 /* length of them, respectively */ 1206 u8 ssid_len; 1207 u8 supp_rates_len; 1208 u8 fh_params_len; 1209 u8 ds_params_len; 1210 u8 cf_params_len; 1211 u8 tim_len; 1212 u8 ibss_params_len; 1213 u8 challenge_len; 1214 u8 rsn_len; 1215 u8 erp_info_len; 1216 u8 ext_supp_rates_len; 1217 u8 wmm_info_len; 1218 u8 wmm_param_len; 1219 u8 mesh_id_len; 1220 u8 peering_len; 1221 u8 preq_len; 1222 u8 prep_len; 1223 u8 perr_len; 1224 u8 country_elem_len; 1225 u8 quiet_elem_len; 1226 u8 num_of_quiet_elem; /* can be more the one */ 1227 u8 timeout_int_len; 1228 1229 /* whether a parse error occurred while retrieving these elements */ 1230 bool parse_error; 1231 }; 1232 1233 static inline struct ieee80211_local *hw_to_local( 1234 struct ieee80211_hw *hw) 1235 { 1236 return container_of(hw, struct ieee80211_local, hw); 1237 } 1238 1239 1240 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1241 { 1242 return ether_addr_equal(raddr, addr) || 1243 is_broadcast_ether_addr(raddr); 1244 } 1245 1246 static inline bool 1247 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1248 { 1249 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1250 status->flag & RX_FLAG_MACTIME_END); 1251 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1252 } 1253 1254 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1255 struct ieee80211_rx_status *status, 1256 unsigned int mpdu_len, 1257 unsigned int mpdu_offset); 1258 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1259 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1260 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1261 u32 changed); 1262 void ieee80211_configure_filter(struct ieee80211_local *local); 1263 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1264 1265 /* STA code */ 1266 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1267 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1268 struct cfg80211_auth_request *req); 1269 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1270 struct cfg80211_assoc_request *req); 1271 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1272 struct cfg80211_deauth_request *req); 1273 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1274 struct cfg80211_disassoc_request *req); 1275 void ieee80211_send_pspoll(struct ieee80211_local *local, 1276 struct ieee80211_sub_if_data *sdata); 1277 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1278 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1279 int ieee80211_max_network_latency(struct notifier_block *nb, 1280 unsigned long data, void *dummy); 1281 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1282 void 1283 ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1284 const struct ieee80211_channel_sw_ie *sw_elem, 1285 struct ieee80211_bss *bss, u64 timestamp); 1286 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1287 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1288 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1289 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1290 struct sk_buff *skb); 1291 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1292 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1293 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1294 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1295 __le16 fc, bool acked); 1296 1297 /* IBSS code */ 1298 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1299 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1300 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1301 const u8 *bssid, const u8 *addr, u32 supp_rates); 1302 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1303 struct cfg80211_ibss_params *params); 1304 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1305 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1306 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1307 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1308 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1309 struct sk_buff *skb); 1310 1311 /* mesh code */ 1312 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1313 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1314 struct sk_buff *skb); 1315 1316 /* scan/BSS handling */ 1317 void ieee80211_scan_work(struct work_struct *work); 1318 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1319 const u8 *ssid, u8 ssid_len, 1320 struct ieee80211_channel *chan); 1321 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1322 struct cfg80211_scan_request *req); 1323 void ieee80211_scan_cancel(struct ieee80211_local *local); 1324 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1325 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1326 1327 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1328 struct ieee80211_bss * 1329 ieee80211_bss_info_update(struct ieee80211_local *local, 1330 struct ieee80211_rx_status *rx_status, 1331 struct ieee80211_mgmt *mgmt, 1332 size_t len, 1333 struct ieee802_11_elems *elems, 1334 struct ieee80211_channel *channel); 1335 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1336 struct ieee80211_bss *bss); 1337 1338 /* scheduled scan handling */ 1339 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1340 struct cfg80211_sched_scan_request *req); 1341 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1342 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1343 1344 /* off-channel helpers */ 1345 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1346 void ieee80211_offchannel_return(struct ieee80211_local *local); 1347 void ieee80211_roc_setup(struct ieee80211_local *local); 1348 void ieee80211_start_next_roc(struct ieee80211_local *local); 1349 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata); 1350 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc); 1351 void ieee80211_sw_roc_work(struct work_struct *work); 1352 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1353 1354 /* interface handling */ 1355 int ieee80211_iface_init(void); 1356 void ieee80211_iface_exit(void); 1357 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1358 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1359 struct vif_params *params); 1360 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1361 enum nl80211_iftype type); 1362 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1363 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1364 void ieee80211_recalc_idle(struct ieee80211_local *local); 1365 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1366 const int offset); 1367 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1368 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1369 1370 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1371 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1372 1373 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1374 { 1375 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1376 } 1377 1378 /* tx handling */ 1379 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1380 void ieee80211_tx_pending(unsigned long data); 1381 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1382 struct net_device *dev); 1383 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1384 struct net_device *dev); 1385 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1386 struct sk_buff_head *skbs); 1387 1388 /* HT */ 1389 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1390 struct ieee80211_sta_ht_cap *ht_cap); 1391 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1392 struct ieee80211_supported_band *sband, 1393 const struct ieee80211_ht_cap *ht_cap_ie, 1394 struct sta_info *sta); 1395 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1396 const u8 *da, u16 tid, 1397 u16 initiator, u16 reason_code); 1398 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1399 enum ieee80211_smps_mode smps, const u8 *da, 1400 const u8 *bssid); 1401 void ieee80211_request_smps_work(struct work_struct *work); 1402 1403 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1404 u16 initiator, u16 reason, bool stop); 1405 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1406 u16 initiator, u16 reason, bool stop); 1407 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1408 enum ieee80211_agg_stop_reason reason); 1409 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1410 struct sta_info *sta, 1411 struct ieee80211_mgmt *mgmt, size_t len); 1412 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1413 struct sta_info *sta, 1414 struct ieee80211_mgmt *mgmt, 1415 size_t len); 1416 void ieee80211_process_addba_request(struct ieee80211_local *local, 1417 struct sta_info *sta, 1418 struct ieee80211_mgmt *mgmt, 1419 size_t len); 1420 1421 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1422 enum ieee80211_agg_stop_reason reason); 1423 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1424 enum ieee80211_agg_stop_reason reason); 1425 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1426 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1427 void ieee80211_ba_session_work(struct work_struct *work); 1428 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1429 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1430 1431 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1432 1433 /* VHT */ 1434 void 1435 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1436 struct ieee80211_supported_band *sband, 1437 const struct ieee80211_vht_cap *vht_cap_ie, 1438 struct sta_info *sta); 1439 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1440 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1441 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1442 struct sta_info *sta, u8 opmode, 1443 enum ieee80211_band band, bool nss_only); 1444 1445 /* Spectrum management */ 1446 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1447 struct ieee80211_mgmt *mgmt, 1448 size_t len); 1449 1450 /* Suspend/resume and hw reconfiguration */ 1451 int ieee80211_reconfig(struct ieee80211_local *local); 1452 void ieee80211_stop_device(struct ieee80211_local *local); 1453 1454 int __ieee80211_suspend(struct ieee80211_hw *hw, 1455 struct cfg80211_wowlan *wowlan); 1456 1457 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1458 { 1459 struct ieee80211_local *local = hw_to_local(hw); 1460 1461 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1462 "%s: resume with hardware scan still in progress\n", 1463 wiphy_name(hw->wiphy)); 1464 1465 return ieee80211_reconfig(hw_to_local(hw)); 1466 } 1467 1468 /* utility functions/constants */ 1469 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1470 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1471 enum nl80211_iftype type); 1472 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1473 int rate, int erp, int short_preamble); 1474 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1475 struct ieee80211_hdr *hdr, const u8 *tsc, 1476 gfp_t gfp); 1477 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1478 bool bss_notify); 1479 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1480 enum ieee80211_band band); 1481 1482 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1483 struct sk_buff *skb, int tid, 1484 enum ieee80211_band band); 1485 1486 static inline void 1487 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1488 struct sk_buff *skb, int tid, 1489 enum ieee80211_band band) 1490 { 1491 rcu_read_lock(); 1492 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1493 rcu_read_unlock(); 1494 } 1495 1496 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1497 struct sk_buff *skb, int tid) 1498 { 1499 struct ieee80211_chanctx_conf *chanctx_conf; 1500 1501 rcu_read_lock(); 1502 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1503 if (WARN_ON(!chanctx_conf)) { 1504 rcu_read_unlock(); 1505 kfree_skb(skb); 1506 return; 1507 } 1508 1509 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1510 chanctx_conf->def.chan->band); 1511 rcu_read_unlock(); 1512 } 1513 1514 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1515 struct sk_buff *skb) 1516 { 1517 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1518 ieee80211_tx_skb_tid(sdata, skb, 7); 1519 } 1520 1521 void ieee802_11_parse_elems(u8 *start, size_t len, 1522 struct ieee802_11_elems *elems); 1523 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1524 struct ieee802_11_elems *elems, 1525 u64 filter, u32 crc); 1526 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1527 enum ieee80211_band band); 1528 1529 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1530 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1531 void ieee80211_dynamic_ps_timer(unsigned long data); 1532 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1533 struct ieee80211_sub_if_data *sdata, 1534 int powersave); 1535 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1536 struct ieee80211_hdr *hdr); 1537 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1538 struct ieee80211_hdr *hdr, bool ack); 1539 1540 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1541 enum queue_stop_reason reason); 1542 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1543 enum queue_stop_reason reason); 1544 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1545 enum queue_stop_reason reason); 1546 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1547 enum queue_stop_reason reason); 1548 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1549 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1550 struct sk_buff *skb); 1551 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1552 struct sk_buff_head *skbs, 1553 void (*fn)(void *data), void *data); 1554 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1555 struct sk_buff_head *skbs) 1556 { 1557 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1558 } 1559 1560 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1561 u16 transaction, u16 auth_alg, u16 status, 1562 const u8 *extra, size_t extra_len, const u8 *bssid, 1563 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1564 u32 tx_flags); 1565 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1566 const u8 *bssid, u16 stype, u16 reason, 1567 bool send_frame, u8 *frame_buf); 1568 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1569 size_t buffer_len, const u8 *ie, size_t ie_len, 1570 enum ieee80211_band band, u32 rate_mask, 1571 u8 channel); 1572 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1573 u8 *dst, u32 ratemask, 1574 struct ieee80211_channel *chan, 1575 const u8 *ssid, size_t ssid_len, 1576 const u8 *ie, size_t ie_len, 1577 bool directed); 1578 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1579 const u8 *ssid, size_t ssid_len, 1580 const u8 *ie, size_t ie_len, 1581 u32 ratemask, bool directed, u32 tx_flags, 1582 struct ieee80211_channel *channel, bool scan); 1583 1584 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1585 const size_t supp_rates_len, 1586 const u8 *supp_rates); 1587 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1588 struct ieee802_11_elems *elems, 1589 enum ieee80211_band band, u32 *basic_rates); 1590 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1591 enum ieee80211_smps_mode smps_mode); 1592 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1593 1594 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1595 const u8 *ids, int n_ids, size_t offset); 1596 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1597 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1598 u16 cap); 1599 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1600 const struct cfg80211_chan_def *chandef, 1601 u16 prot_mode); 1602 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1603 u32 cap); 1604 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1605 struct sk_buff *skb, bool need_basic, 1606 enum ieee80211_band band); 1607 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1608 struct sk_buff *skb, bool need_basic, 1609 enum ieee80211_band band); 1610 1611 /* channel management */ 1612 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1613 const struct ieee80211_ht_operation *ht_oper, 1614 struct cfg80211_chan_def *chandef); 1615 1616 int __must_check 1617 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1618 const struct cfg80211_chan_def *chandef, 1619 enum ieee80211_chanctx_mode mode); 1620 int __must_check 1621 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1622 const struct cfg80211_chan_def *chandef, 1623 u32 *changed); 1624 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1625 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1626 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1627 bool clear); 1628 1629 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1630 struct ieee80211_chanctx *chanctx); 1631 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1632 struct ieee80211_chanctx *chanctx); 1633 1634 void ieee80211_dfs_cac_timer(unsigned long data); 1635 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1636 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1637 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1638 1639 #ifdef CONFIG_MAC80211_NOINLINE 1640 #define debug_noinline noinline 1641 #else 1642 #define debug_noinline 1643 #endif 1644 1645 #endif /* IEEE80211_I_H */ 1646