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 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 897 * cancelled. 898 */ 899 enum { 900 SCAN_SW_SCANNING, 901 SCAN_HW_SCANNING, 902 SCAN_ONCHANNEL_SCANNING, 903 SCAN_COMPLETED, 904 SCAN_ABORTED, 905 SCAN_HW_CANCELLED, 906 }; 907 908 /** 909 * enum mac80211_scan_state - scan state machine states 910 * 911 * @SCAN_DECISION: Main entry point to the scan state machine, this state 912 * determines if we should keep on scanning or switch back to the 913 * operating channel 914 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 915 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 916 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 917 * send out data 918 * @SCAN_RESUME: Resume the scan and scan the next channel 919 * @SCAN_ABORT: Abort the scan and go back to operating channel 920 */ 921 enum mac80211_scan_state { 922 SCAN_DECISION, 923 SCAN_SET_CHANNEL, 924 SCAN_SEND_PROBE, 925 SCAN_SUSPEND, 926 SCAN_RESUME, 927 SCAN_ABORT, 928 }; 929 930 struct ieee80211_local { 931 /* embed the driver visible part. 932 * don't cast (use the static inlines below), but we keep 933 * it first anyway so they become a no-op */ 934 struct ieee80211_hw hw; 935 936 const struct ieee80211_ops *ops; 937 938 /* 939 * private workqueue to mac80211. mac80211 makes this accessible 940 * via ieee80211_queue_work() 941 */ 942 struct workqueue_struct *workqueue; 943 944 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 945 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 946 spinlock_t queue_stop_reason_lock; 947 948 int open_count; 949 int monitors, cooked_mntrs; 950 /* number of interfaces with corresponding FIF_ flags */ 951 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 952 fif_probe_req; 953 int probe_req_reg; 954 unsigned int filter_flags; /* FIF_* */ 955 956 bool wiphy_ciphers_allocated; 957 958 bool use_chanctx; 959 960 /* protects the aggregated multicast list and filter calls */ 961 spinlock_t filter_lock; 962 963 /* used for uploading changed mc list */ 964 struct work_struct reconfig_filter; 965 966 /* aggregated multicast list */ 967 struct netdev_hw_addr_list mc_list; 968 969 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 970 971 /* 972 * suspended is true if we finished all the suspend _and_ we have 973 * not yet come up from resume. This is to be used by mac80211 974 * to ensure driver sanity during suspend and mac80211's own 975 * sanity. It can eventually be used for WoW as well. 976 */ 977 bool suspended; 978 979 /* 980 * Resuming is true while suspended, but when we're reprogramming the 981 * hardware -- at that time it's allowed to use ieee80211_queue_work() 982 * again even though some other parts of the stack are still suspended 983 * and we still drop received frames to avoid waking the stack. 984 */ 985 bool resuming; 986 987 /* 988 * quiescing is true during the suspend process _only_ to 989 * ease timer cancelling etc. 990 */ 991 bool quiescing; 992 993 /* device is started */ 994 bool started; 995 996 /* device is during a HW reconfig */ 997 bool in_reconfig; 998 999 /* wowlan is enabled -- don't reconfig on resume */ 1000 bool wowlan; 1001 1002 /* DFS/radar detection is enabled */ 1003 bool radar_detect_enabled; 1004 struct work_struct radar_detected_work; 1005 1006 /* number of RX chains the hardware has */ 1007 u8 rx_chains; 1008 1009 int tx_headroom; /* required headroom for hardware/radiotap */ 1010 1011 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1012 * added to skb_queue will be processed, but frames in 1013 * skb_queue_unreliable may be dropped if the total length of these 1014 * queues increases over the limit. */ 1015 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1016 struct tasklet_struct tasklet; 1017 struct sk_buff_head skb_queue; 1018 struct sk_buff_head skb_queue_unreliable; 1019 1020 spinlock_t rx_path_lock; 1021 1022 /* Station data */ 1023 /* 1024 * The mutex only protects the list, hash table and 1025 * counter, reads are done with RCU. 1026 */ 1027 struct mutex sta_mtx; 1028 spinlock_t tim_lock; 1029 unsigned long num_sta; 1030 struct list_head sta_list; 1031 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 1032 struct timer_list sta_cleanup; 1033 int sta_generation; 1034 1035 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1036 struct tasklet_struct tx_pending_tasklet; 1037 1038 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1039 1040 /* number of interfaces with corresponding IFF_ flags */ 1041 atomic_t iff_allmultis, iff_promiscs; 1042 1043 struct rate_control_ref *rate_ctrl; 1044 1045 struct crypto_cipher *wep_tx_tfm; 1046 struct crypto_cipher *wep_rx_tfm; 1047 u32 wep_iv; 1048 1049 /* see iface.c */ 1050 struct list_head interfaces; 1051 struct mutex iflist_mtx; 1052 1053 /* 1054 * Key mutex, protects sdata's key_list and sta_info's 1055 * key pointers (write access, they're RCU.) 1056 */ 1057 struct mutex key_mtx; 1058 1059 /* mutex for scan and work locking */ 1060 struct mutex mtx; 1061 1062 /* Scanning and BSS list */ 1063 unsigned long scanning; 1064 struct cfg80211_ssid scan_ssid; 1065 struct cfg80211_scan_request *int_scan_req; 1066 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1067 struct cfg80211_chan_def scan_chandef; 1068 enum ieee80211_band hw_scan_band; 1069 int scan_channel_idx; 1070 int scan_ies_len; 1071 int hw_scan_ies_bufsize; 1072 1073 struct work_struct sched_scan_stopped_work; 1074 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1075 1076 unsigned long leave_oper_channel_time; 1077 enum mac80211_scan_state next_scan_state; 1078 struct delayed_work scan_work; 1079 struct ieee80211_sub_if_data __rcu *scan_sdata; 1080 struct cfg80211_chan_def csa_chandef; 1081 /* For backward compatibility only -- do not use */ 1082 struct cfg80211_chan_def _oper_chandef; 1083 1084 /* Temporary remain-on-channel for off-channel operations */ 1085 struct ieee80211_channel *tmp_channel; 1086 1087 /* channel contexts */ 1088 struct list_head chanctx_list; 1089 struct mutex chanctx_mtx; 1090 1091 /* SNMP counters */ 1092 /* dot11CountersTable */ 1093 u32 dot11TransmittedFragmentCount; 1094 u32 dot11MulticastTransmittedFrameCount; 1095 u32 dot11FailedCount; 1096 u32 dot11RetryCount; 1097 u32 dot11MultipleRetryCount; 1098 u32 dot11FrameDuplicateCount; 1099 u32 dot11ReceivedFragmentCount; 1100 u32 dot11MulticastReceivedFrameCount; 1101 u32 dot11TransmittedFrameCount; 1102 1103 #ifdef CONFIG_MAC80211_LEDS 1104 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1105 struct tpt_led_trigger *tpt_led_trigger; 1106 char tx_led_name[32], rx_led_name[32], 1107 assoc_led_name[32], radio_led_name[32]; 1108 #endif 1109 1110 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1111 /* TX/RX handler statistics */ 1112 unsigned int tx_handlers_drop; 1113 unsigned int tx_handlers_queued; 1114 unsigned int tx_handlers_drop_unencrypted; 1115 unsigned int tx_handlers_drop_fragment; 1116 unsigned int tx_handlers_drop_wep; 1117 unsigned int tx_handlers_drop_not_assoc; 1118 unsigned int tx_handlers_drop_unauth_port; 1119 unsigned int rx_handlers_drop; 1120 unsigned int rx_handlers_queued; 1121 unsigned int rx_handlers_drop_nullfunc; 1122 unsigned int rx_handlers_drop_defrag; 1123 unsigned int rx_handlers_drop_short; 1124 unsigned int tx_expand_skb_head; 1125 unsigned int tx_expand_skb_head_cloned; 1126 unsigned int rx_expand_skb_head; 1127 unsigned int rx_expand_skb_head2; 1128 unsigned int rx_handlers_fragments; 1129 unsigned int tx_status_drop; 1130 #define I802_DEBUG_INC(c) (c)++ 1131 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1132 #define I802_DEBUG_INC(c) do { } while (0) 1133 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1134 1135 1136 int total_ps_buffered; /* total number of all buffered unicast and 1137 * multicast packets for power saving stations 1138 */ 1139 1140 bool pspolling; 1141 bool offchannel_ps_enabled; 1142 /* 1143 * PS can only be enabled when we have exactly one managed 1144 * interface (and monitors) in PS, this then points there. 1145 */ 1146 struct ieee80211_sub_if_data *ps_sdata; 1147 struct work_struct dynamic_ps_enable_work; 1148 struct work_struct dynamic_ps_disable_work; 1149 struct timer_list dynamic_ps_timer; 1150 struct notifier_block network_latency_notifier; 1151 struct notifier_block ifa_notifier; 1152 struct notifier_block ifa6_notifier; 1153 1154 /* 1155 * The dynamic ps timeout configured from user space via WEXT - 1156 * this will override whatever chosen by mac80211 internally. 1157 */ 1158 int dynamic_ps_forced_timeout; 1159 1160 int user_power_level; /* in dBm, for all interfaces */ 1161 1162 enum ieee80211_smps_mode smps_mode; 1163 1164 struct work_struct restart_work; 1165 1166 #ifdef CONFIG_MAC80211_DEBUGFS 1167 struct local_debugfsdentries { 1168 struct dentry *rcdir; 1169 struct dentry *keys; 1170 } debugfs; 1171 #endif 1172 1173 /* 1174 * Remain-on-channel support 1175 */ 1176 struct list_head roc_list; 1177 struct work_struct hw_roc_start, hw_roc_done; 1178 unsigned long hw_roc_start_time; 1179 u64 roc_cookie_counter; 1180 1181 struct idr ack_status_frames; 1182 spinlock_t ack_status_lock; 1183 1184 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1185 1186 /* virtual monitor interface */ 1187 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1188 struct cfg80211_chan_def monitor_chandef; 1189 }; 1190 1191 static inline struct ieee80211_sub_if_data * 1192 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1193 { 1194 return netdev_priv(dev); 1195 } 1196 1197 static inline struct ieee80211_sub_if_data * 1198 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1199 { 1200 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1201 } 1202 1203 /* this struct represents 802.11n's RA/TID combination */ 1204 struct ieee80211_ra_tid { 1205 u8 ra[ETH_ALEN]; 1206 u16 tid; 1207 }; 1208 1209 /* Parsed Information Elements */ 1210 struct ieee802_11_elems { 1211 const u8 *ie_start; 1212 size_t total_len; 1213 1214 /* pointers to IEs */ 1215 const u8 *ssid; 1216 const u8 *supp_rates; 1217 const u8 *ds_params; 1218 const struct ieee80211_tim_ie *tim; 1219 const u8 *challenge; 1220 const u8 *rsn; 1221 const u8 *erp_info; 1222 const u8 *ext_supp_rates; 1223 const u8 *wmm_info; 1224 const u8 *wmm_param; 1225 const struct ieee80211_ht_cap *ht_cap_elem; 1226 const struct ieee80211_ht_operation *ht_operation; 1227 const struct ieee80211_vht_cap *vht_cap_elem; 1228 const struct ieee80211_vht_operation *vht_operation; 1229 const struct ieee80211_meshconf_ie *mesh_config; 1230 const u8 *mesh_id; 1231 const u8 *peering; 1232 const __le16 *awake_window; 1233 const u8 *preq; 1234 const u8 *prep; 1235 const u8 *perr; 1236 const struct ieee80211_rann_ie *rann; 1237 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1238 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1239 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1240 const u8 *country_elem; 1241 const u8 *pwr_constr_elem; 1242 const struct ieee80211_timeout_interval_ie *timeout_int; 1243 const u8 *opmode_notif; 1244 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1245 1246 /* length of them, respectively */ 1247 u8 ssid_len; 1248 u8 supp_rates_len; 1249 u8 tim_len; 1250 u8 challenge_len; 1251 u8 rsn_len; 1252 u8 ext_supp_rates_len; 1253 u8 wmm_info_len; 1254 u8 wmm_param_len; 1255 u8 mesh_id_len; 1256 u8 peering_len; 1257 u8 preq_len; 1258 u8 prep_len; 1259 u8 perr_len; 1260 u8 country_elem_len; 1261 1262 /* whether a parse error occurred while retrieving these elements */ 1263 bool parse_error; 1264 }; 1265 1266 static inline struct ieee80211_local *hw_to_local( 1267 struct ieee80211_hw *hw) 1268 { 1269 return container_of(hw, struct ieee80211_local, hw); 1270 } 1271 1272 1273 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1274 { 1275 return ether_addr_equal(raddr, addr) || 1276 is_broadcast_ether_addr(raddr); 1277 } 1278 1279 static inline bool 1280 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1281 { 1282 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1283 status->flag & RX_FLAG_MACTIME_END); 1284 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1285 } 1286 1287 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1288 struct ieee80211_rx_status *status, 1289 unsigned int mpdu_len, 1290 unsigned int mpdu_offset); 1291 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1292 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1293 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1294 u32 changed); 1295 void ieee80211_configure_filter(struct ieee80211_local *local); 1296 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1297 1298 /* STA code */ 1299 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1300 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1301 struct cfg80211_auth_request *req); 1302 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1303 struct cfg80211_assoc_request *req); 1304 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1305 struct cfg80211_deauth_request *req); 1306 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1307 struct cfg80211_disassoc_request *req); 1308 void ieee80211_send_pspoll(struct ieee80211_local *local, 1309 struct ieee80211_sub_if_data *sdata); 1310 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1311 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1312 int ieee80211_max_network_latency(struct notifier_block *nb, 1313 unsigned long data, void *dummy); 1314 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1315 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1316 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1317 struct sk_buff *skb); 1318 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1319 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1320 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1321 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1322 __le16 fc, bool acked); 1323 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1324 1325 /* IBSS code */ 1326 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1327 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1328 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1329 const u8 *bssid, const u8 *addr, u32 supp_rates); 1330 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1331 struct cfg80211_ibss_params *params); 1332 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1333 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1334 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1335 struct sk_buff *skb); 1336 1337 /* mesh code */ 1338 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1339 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1340 struct sk_buff *skb); 1341 1342 /* scan/BSS handling */ 1343 void ieee80211_scan_work(struct work_struct *work); 1344 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1345 const u8 *ssid, u8 ssid_len, 1346 struct ieee80211_channel *chan, 1347 enum nl80211_bss_scan_width scan_width); 1348 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1349 struct cfg80211_scan_request *req); 1350 void ieee80211_scan_cancel(struct ieee80211_local *local); 1351 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1352 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1353 1354 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1355 struct ieee80211_bss * 1356 ieee80211_bss_info_update(struct ieee80211_local *local, 1357 struct ieee80211_rx_status *rx_status, 1358 struct ieee80211_mgmt *mgmt, 1359 size_t len, 1360 struct ieee802_11_elems *elems, 1361 struct ieee80211_channel *channel); 1362 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1363 struct ieee80211_bss *bss); 1364 1365 /* scheduled scan handling */ 1366 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1367 struct cfg80211_sched_scan_request *req); 1368 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1369 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1370 1371 /* off-channel helpers */ 1372 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1373 void ieee80211_offchannel_return(struct ieee80211_local *local); 1374 void ieee80211_roc_setup(struct ieee80211_local *local); 1375 void ieee80211_start_next_roc(struct ieee80211_local *local); 1376 void ieee80211_roc_purge(struct ieee80211_local *local, 1377 struct ieee80211_sub_if_data *sdata); 1378 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1379 void ieee80211_sw_roc_work(struct work_struct *work); 1380 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1381 1382 /* channel switch handling */ 1383 void ieee80211_csa_finalize_work(struct work_struct *work); 1384 1385 /* interface handling */ 1386 int ieee80211_iface_init(void); 1387 void ieee80211_iface_exit(void); 1388 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1389 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1390 struct vif_params *params); 1391 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1392 enum nl80211_iftype type); 1393 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1394 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1395 u32 ieee80211_idle_off(struct ieee80211_local *local); 1396 void ieee80211_recalc_idle(struct ieee80211_local *local); 1397 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1398 const int offset); 1399 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1400 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1401 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1402 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1403 1404 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1405 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1406 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 1407 struct cfg80211_beacon_data *params); 1408 1409 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1410 { 1411 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1412 } 1413 1414 /* tx handling */ 1415 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1416 void ieee80211_tx_pending(unsigned long data); 1417 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1418 struct net_device *dev); 1419 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1420 struct net_device *dev); 1421 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1422 struct sk_buff_head *skbs); 1423 1424 /* HT */ 1425 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1426 struct ieee80211_sta_ht_cap *ht_cap); 1427 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1428 struct ieee80211_supported_band *sband, 1429 const struct ieee80211_ht_cap *ht_cap_ie, 1430 struct sta_info *sta); 1431 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1432 const u8 *da, u16 tid, 1433 u16 initiator, u16 reason_code); 1434 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1435 enum ieee80211_smps_mode smps, const u8 *da, 1436 const u8 *bssid); 1437 void ieee80211_request_smps_work(struct work_struct *work); 1438 1439 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1440 u16 initiator, u16 reason, bool stop); 1441 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1442 u16 initiator, u16 reason, bool stop); 1443 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1444 enum ieee80211_agg_stop_reason reason); 1445 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1446 struct sta_info *sta, 1447 struct ieee80211_mgmt *mgmt, size_t len); 1448 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1449 struct sta_info *sta, 1450 struct ieee80211_mgmt *mgmt, 1451 size_t len); 1452 void ieee80211_process_addba_request(struct ieee80211_local *local, 1453 struct sta_info *sta, 1454 struct ieee80211_mgmt *mgmt, 1455 size_t len); 1456 1457 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1458 enum ieee80211_agg_stop_reason reason); 1459 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1460 enum ieee80211_agg_stop_reason reason); 1461 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1462 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1463 void ieee80211_ba_session_work(struct work_struct *work); 1464 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1465 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1466 1467 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1468 1469 /* VHT */ 1470 void 1471 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1472 struct ieee80211_supported_band *sband, 1473 const struct ieee80211_vht_cap *vht_cap_ie, 1474 struct sta_info *sta); 1475 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1476 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1477 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1478 struct sta_info *sta, u8 opmode, 1479 enum ieee80211_band band, bool nss_only); 1480 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1481 struct ieee80211_sta_vht_cap *vht_cap); 1482 1483 /* Spectrum management */ 1484 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1485 struct ieee80211_mgmt *mgmt, 1486 size_t len); 1487 1488 /* Suspend/resume and hw reconfiguration */ 1489 int ieee80211_reconfig(struct ieee80211_local *local); 1490 void ieee80211_stop_device(struct ieee80211_local *local); 1491 1492 int __ieee80211_suspend(struct ieee80211_hw *hw, 1493 struct cfg80211_wowlan *wowlan); 1494 1495 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1496 { 1497 struct ieee80211_local *local = hw_to_local(hw); 1498 1499 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1500 "%s: resume with hardware scan still in progress\n", 1501 wiphy_name(hw->wiphy)); 1502 1503 return ieee80211_reconfig(hw_to_local(hw)); 1504 } 1505 1506 /* utility functions/constants */ 1507 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1508 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1509 enum nl80211_iftype type); 1510 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1511 int rate, int erp, int short_preamble, 1512 int shift); 1513 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1514 struct ieee80211_hdr *hdr, const u8 *tsc, 1515 gfp_t gfp); 1516 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1517 bool bss_notify); 1518 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1519 enum ieee80211_band band); 1520 1521 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1522 struct sk_buff *skb, int tid, 1523 enum ieee80211_band band); 1524 1525 static inline void 1526 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1527 struct sk_buff *skb, int tid, 1528 enum ieee80211_band band) 1529 { 1530 rcu_read_lock(); 1531 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1532 rcu_read_unlock(); 1533 } 1534 1535 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1536 struct sk_buff *skb, int tid) 1537 { 1538 struct ieee80211_chanctx_conf *chanctx_conf; 1539 1540 rcu_read_lock(); 1541 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1542 if (WARN_ON(!chanctx_conf)) { 1543 rcu_read_unlock(); 1544 kfree_skb(skb); 1545 return; 1546 } 1547 1548 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1549 chanctx_conf->def.chan->band); 1550 rcu_read_unlock(); 1551 } 1552 1553 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1554 struct sk_buff *skb) 1555 { 1556 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1557 ieee80211_tx_skb_tid(sdata, skb, 7); 1558 } 1559 1560 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1561 struct ieee802_11_elems *elems, 1562 u64 filter, u32 crc); 1563 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1564 bool action, 1565 struct ieee802_11_elems *elems) 1566 { 1567 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1568 } 1569 1570 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1571 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1572 void ieee80211_dynamic_ps_timer(unsigned long data); 1573 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1574 struct ieee80211_sub_if_data *sdata, 1575 int powersave); 1576 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1577 struct ieee80211_hdr *hdr); 1578 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1579 struct ieee80211_hdr *hdr, bool ack); 1580 1581 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1582 unsigned long queues, 1583 enum queue_stop_reason reason); 1584 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1585 unsigned long queues, 1586 enum queue_stop_reason reason); 1587 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1588 enum queue_stop_reason reason); 1589 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1590 enum queue_stop_reason reason); 1591 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1592 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1593 struct sk_buff *skb); 1594 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1595 struct sk_buff_head *skbs, 1596 void (*fn)(void *data), void *data); 1597 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1598 struct sk_buff_head *skbs) 1599 { 1600 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1601 } 1602 void ieee80211_flush_queues(struct ieee80211_local *local, 1603 struct ieee80211_sub_if_data *sdata); 1604 1605 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1606 u16 transaction, u16 auth_alg, u16 status, 1607 const u8 *extra, size_t extra_len, const u8 *bssid, 1608 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1609 u32 tx_flags); 1610 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1611 const u8 *bssid, u16 stype, u16 reason, 1612 bool send_frame, u8 *frame_buf); 1613 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1614 size_t buffer_len, const u8 *ie, size_t ie_len, 1615 enum ieee80211_band band, u32 rate_mask, 1616 struct cfg80211_chan_def *chandef); 1617 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1618 u8 *dst, u32 ratemask, 1619 struct ieee80211_channel *chan, 1620 const u8 *ssid, size_t ssid_len, 1621 const u8 *ie, size_t ie_len, 1622 bool directed); 1623 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1624 const u8 *ssid, size_t ssid_len, 1625 const u8 *ie, size_t ie_len, 1626 u32 ratemask, bool directed, u32 tx_flags, 1627 struct ieee80211_channel *channel, bool scan); 1628 1629 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 1630 struct ieee802_11_elems *elems, 1631 enum ieee80211_band band, u32 *basic_rates); 1632 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1633 enum ieee80211_smps_mode smps_mode); 1634 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1635 1636 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1637 const u8 *ids, int n_ids, size_t offset); 1638 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1639 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1640 u16 cap); 1641 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1642 const struct cfg80211_chan_def *chandef, 1643 u16 prot_mode); 1644 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1645 u32 cap); 1646 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 1647 const struct ieee80211_supported_band *sband, 1648 const u8 *srates, int srates_len, u32 *rates); 1649 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1650 struct sk_buff *skb, bool need_basic, 1651 enum ieee80211_band band); 1652 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1653 struct sk_buff *skb, bool need_basic, 1654 enum ieee80211_band band); 1655 1656 /* channel management */ 1657 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1658 const struct ieee80211_ht_operation *ht_oper, 1659 struct cfg80211_chan_def *chandef); 1660 1661 int __must_check 1662 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1663 const struct cfg80211_chan_def *chandef, 1664 enum ieee80211_chanctx_mode mode); 1665 int __must_check 1666 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1667 const struct cfg80211_chan_def *chandef, 1668 u32 *changed); 1669 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */ 1670 int __must_check 1671 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata, 1672 const struct cfg80211_chan_def *chandef, 1673 u32 *changed); 1674 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1675 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1676 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1677 bool clear); 1678 1679 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1680 struct ieee80211_chanctx *chanctx); 1681 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1682 struct ieee80211_chanctx *chanctx); 1683 1684 void ieee80211_dfs_cac_timer(unsigned long data); 1685 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1686 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1687 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1688 1689 #ifdef CONFIG_MAC80211_NOINLINE 1690 #define debug_noinline noinline 1691 #else 1692 #define debug_noinline 1693 #endif 1694 1695 #endif /* IEEE80211_I_H */ 1696