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 struct ieee80211_rate *beacon_rate; 98 99 /* 100 * During association, we save an ERP value from a probe response so 101 * that we can feed ERP info to the driver when handling the 102 * association completes. these fields probably won't be up-to-date 103 * otherwise, you probably don't want to use them. 104 */ 105 bool has_erp_value; 106 u8 erp_value; 107 108 /* Keep track of the corruption of the last beacon/probe response. */ 109 u8 corrupt_data; 110 111 /* Keep track of what bits of information we have valid info for. */ 112 u8 valid_data; 113 }; 114 115 /** 116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 119 * 120 * These are bss flags that are attached to a bss in the 121 * @corrupt_data field of &struct ieee80211_bss. 122 */ 123 enum ieee80211_bss_corrupt_data_flags { 124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 126 }; 127 128 /** 129 * enum ieee80211_valid_data_flags - BSS valid data flags 130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 133 * 134 * These are bss flags that are attached to a bss in the 135 * @valid_data field of &struct ieee80211_bss. They show which parts 136 * of the data structure were recieved as a result of an un-corrupted 137 * beacon/probe response. 138 */ 139 enum ieee80211_bss_valid_data_flags { 140 IEEE80211_BSS_VALID_WMM = BIT(1), 141 IEEE80211_BSS_VALID_RATES = BIT(2), 142 IEEE80211_BSS_VALID_ERP = BIT(3) 143 }; 144 145 typedef unsigned __bitwise__ ieee80211_tx_result; 146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 147 #define TX_DROP ((__force ieee80211_tx_result) 1u) 148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 149 150 #define IEEE80211_TX_UNICAST BIT(1) 151 #define IEEE80211_TX_PS_BUFFERED BIT(2) 152 153 struct ieee80211_tx_data { 154 struct sk_buff *skb; 155 struct sk_buff_head skbs; 156 struct ieee80211_local *local; 157 struct ieee80211_sub_if_data *sdata; 158 struct sta_info *sta; 159 struct ieee80211_key *key; 160 struct ieee80211_tx_rate rate; 161 162 unsigned int flags; 163 }; 164 165 166 typedef unsigned __bitwise__ ieee80211_rx_result; 167 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 168 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 169 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 170 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 171 172 /** 173 * enum ieee80211_packet_rx_flags - packet RX flags 174 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 175 * (incl. multicast frames) 176 * @IEEE80211_RX_FRAGMENTED: fragmented frame 177 * @IEEE80211_RX_AMSDU: a-MSDU packet 178 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 179 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 180 * 181 * These are per-frame flags that are attached to a frame in the 182 * @rx_flags field of &struct ieee80211_rx_status. 183 */ 184 enum ieee80211_packet_rx_flags { 185 IEEE80211_RX_RA_MATCH = BIT(1), 186 IEEE80211_RX_FRAGMENTED = BIT(2), 187 IEEE80211_RX_AMSDU = BIT(3), 188 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 189 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 190 }; 191 192 /** 193 * enum ieee80211_rx_flags - RX data flags 194 * 195 * @IEEE80211_RX_CMNTR: received on cooked monitor already 196 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 197 * to cfg80211_report_obss_beacon(). 198 * 199 * These flags are used across handling multiple interfaces 200 * for a single frame. 201 */ 202 enum ieee80211_rx_flags { 203 IEEE80211_RX_CMNTR = BIT(0), 204 IEEE80211_RX_BEACON_REPORTED = BIT(1), 205 }; 206 207 struct ieee80211_rx_data { 208 struct sk_buff *skb; 209 struct ieee80211_local *local; 210 struct ieee80211_sub_if_data *sdata; 211 struct sta_info *sta; 212 struct ieee80211_key *key; 213 214 unsigned int flags; 215 216 /* 217 * Index into sequence numbers array, 0..16 218 * since the last (16) is used for non-QoS, 219 * will be 16 on non-QoS frames. 220 */ 221 int seqno_idx; 222 223 /* 224 * Index into the security IV/PN arrays, 0..16 225 * since the last (16) is used for CCMP-encrypted 226 * management frames, will be set to 16 on mgmt 227 * frames and 0 on non-QoS frames. 228 */ 229 int security_idx; 230 231 u32 tkip_iv32; 232 u16 tkip_iv16; 233 }; 234 235 struct beacon_data { 236 u8 *head, *tail; 237 int head_len, tail_len; 238 struct rcu_head rcu_head; 239 }; 240 241 struct probe_resp { 242 struct rcu_head rcu_head; 243 int len; 244 u8 data[0]; 245 }; 246 247 struct ps_data { 248 /* yes, this looks ugly, but guarantees that we can later use 249 * bitmap_empty :) 250 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 251 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 252 struct sk_buff_head bc_buf; 253 atomic_t num_sta_ps; /* number of stations in PS mode */ 254 int dtim_count; 255 bool dtim_bc_mc; 256 }; 257 258 struct ieee80211_if_ap { 259 struct beacon_data __rcu *beacon; 260 struct probe_resp __rcu *probe_resp; 261 262 struct list_head vlans; 263 264 struct ps_data ps; 265 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 266 }; 267 268 struct ieee80211_if_wds { 269 struct sta_info *sta; 270 u8 remote_addr[ETH_ALEN]; 271 }; 272 273 struct ieee80211_if_vlan { 274 struct list_head list; 275 276 /* used for all tx if the VLAN is configured to 4-addr mode */ 277 struct sta_info __rcu *sta; 278 }; 279 280 struct mesh_stats { 281 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 282 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 283 __u32 fwded_frames; /* Mesh total forwarded frames */ 284 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 285 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 286 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 287 }; 288 289 #define PREQ_Q_F_START 0x1 290 #define PREQ_Q_F_REFRESH 0x2 291 struct mesh_preq_queue { 292 struct list_head list; 293 u8 dst[ETH_ALEN]; 294 u8 flags; 295 }; 296 297 #if HZ/100 == 0 298 #define IEEE80211_ROC_MIN_LEFT 1 299 #else 300 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 301 #endif 302 303 struct ieee80211_roc_work { 304 struct list_head list; 305 struct list_head dependents; 306 307 struct delayed_work work; 308 309 struct ieee80211_sub_if_data *sdata; 310 311 struct ieee80211_channel *chan; 312 313 bool started, abort, hw_begun, notified; 314 bool to_be_freed; 315 316 unsigned long hw_start_time; 317 318 u32 duration, req_duration; 319 struct sk_buff *frame; 320 u64 cookie, mgmt_tx_cookie; 321 enum ieee80211_roc_type type; 322 }; 323 324 /* flags used in struct ieee80211_if_managed.flags */ 325 enum ieee80211_sta_flags { 326 IEEE80211_STA_BEACON_POLL = BIT(0), 327 IEEE80211_STA_CONNECTION_POLL = BIT(1), 328 IEEE80211_STA_CONTROL_PORT = BIT(2), 329 IEEE80211_STA_DISABLE_HT = BIT(4), 330 IEEE80211_STA_CSA_RECEIVED = BIT(5), 331 IEEE80211_STA_MFP_ENABLED = BIT(6), 332 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 333 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 334 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 335 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 336 IEEE80211_STA_DISABLE_VHT = BIT(11), 337 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 338 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 339 }; 340 341 struct ieee80211_mgd_auth_data { 342 struct cfg80211_bss *bss; 343 unsigned long timeout; 344 int tries; 345 u16 algorithm, expected_transaction; 346 347 u8 key[WLAN_KEY_LEN_WEP104]; 348 u8 key_len, key_idx; 349 bool done; 350 bool timeout_started; 351 352 u16 sae_trans, sae_status; 353 size_t data_len; 354 u8 data[]; 355 }; 356 357 struct ieee80211_mgd_assoc_data { 358 struct cfg80211_bss *bss; 359 const u8 *supp_rates; 360 361 unsigned long timeout; 362 int tries; 363 364 u16 capability; 365 u8 prev_bssid[ETH_ALEN]; 366 u8 ssid[IEEE80211_MAX_SSID_LEN]; 367 u8 ssid_len; 368 u8 supp_rates_len; 369 bool wmm, uapsd; 370 bool need_beacon; 371 bool synced; 372 bool timeout_started; 373 374 u8 ap_ht_param; 375 376 struct ieee80211_vht_cap ap_vht_cap; 377 378 size_t ie_len; 379 u8 ie[]; 380 }; 381 382 struct ieee80211_if_managed { 383 struct timer_list timer; 384 struct timer_list conn_mon_timer; 385 struct timer_list bcn_mon_timer; 386 struct timer_list chswitch_timer; 387 struct work_struct monitor_work; 388 struct work_struct chswitch_work; 389 struct work_struct beacon_connection_loss_work; 390 struct work_struct csa_connection_drop_work; 391 392 unsigned long beacon_timeout; 393 unsigned long probe_timeout; 394 int probe_send_count; 395 bool nullfunc_failed; 396 bool connection_loss; 397 398 struct cfg80211_bss *associated; 399 struct ieee80211_mgd_auth_data *auth_data; 400 struct ieee80211_mgd_assoc_data *assoc_data; 401 402 u8 bssid[ETH_ALEN]; 403 404 u16 aid; 405 406 bool powersave; /* powersave requested for this iface */ 407 bool broken_ap; /* AP is broken -- turn off powersave */ 408 bool have_beacon; 409 u8 dtim_period; 410 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 411 driver_smps_mode; /* smps mode request */ 412 413 struct work_struct request_smps_work; 414 415 unsigned int flags; 416 417 bool beacon_crc_valid; 418 u32 beacon_crc; 419 420 bool status_acked; 421 bool status_received; 422 __le16 status_fc; 423 424 enum { 425 IEEE80211_MFP_DISABLED, 426 IEEE80211_MFP_OPTIONAL, 427 IEEE80211_MFP_REQUIRED 428 } mfp; /* management frame protection */ 429 430 /* 431 * Bitmask of enabled u-apsd queues, 432 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 433 * to take effect. 434 */ 435 unsigned int uapsd_queues; 436 437 /* 438 * Maximum number of buffered frames AP can deliver during a 439 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 440 * Needs a new association to take effect. 441 */ 442 unsigned int uapsd_max_sp_len; 443 444 int wmm_last_param_set; 445 446 u8 use_4addr; 447 448 s16 p2p_noa_index; 449 450 /* Signal strength from the last Beacon frame in the current BSS. */ 451 int last_beacon_signal; 452 453 /* 454 * Weighted average of the signal strength from Beacon frames in the 455 * current BSS. This is in units of 1/16 of the signal unit to maintain 456 * accuracy and to speed up calculations, i.e., the value need to be 457 * divided by 16 to get the actual value. 458 */ 459 int ave_beacon_signal; 460 461 /* 462 * Number of Beacon frames used in ave_beacon_signal. This can be used 463 * to avoid generating less reliable cqm events that would be based 464 * only on couple of received frames. 465 */ 466 unsigned int count_beacon_signal; 467 468 /* 469 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 470 * that triggered a cqm event. 0 indicates that no event has been 471 * generated for the current association. 472 */ 473 int last_cqm_event_signal; 474 475 /* 476 * State variables for keeping track of RSSI of the AP currently 477 * connected to and informing driver when RSSI has gone 478 * below/above a certain threshold. 479 */ 480 int rssi_min_thold, rssi_max_thold; 481 int last_ave_beacon_signal; 482 483 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 484 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 485 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 486 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 487 }; 488 489 struct ieee80211_if_ibss { 490 struct timer_list timer; 491 492 unsigned long last_scan_completed; 493 494 u32 basic_rates; 495 496 bool fixed_bssid; 497 bool fixed_channel; 498 bool privacy; 499 500 bool control_port; 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 cfg80211_chan_def chandef; 507 508 unsigned long ibss_join_req; 509 /* probe response/beacon for IBSS */ 510 struct beacon_data __rcu *presp; 511 512 spinlock_t incomplete_lock; 513 struct list_head incomplete_stations; 514 515 enum { 516 IEEE80211_IBSS_MLME_SEARCH, 517 IEEE80211_IBSS_MLME_JOINED, 518 } state; 519 }; 520 521 /** 522 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 523 * 524 * these declarations define the interface, which enables 525 * vendor-specific mesh synchronization 526 * 527 */ 528 struct ieee802_11_elems; 529 struct ieee80211_mesh_sync_ops { 530 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 531 u16 stype, 532 struct ieee80211_mgmt *mgmt, 533 struct ieee802_11_elems *elems, 534 struct ieee80211_rx_status *rx_status); 535 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 536 /* add other framework functions here */ 537 }; 538 539 struct ieee80211_if_mesh { 540 struct timer_list housekeeping_timer; 541 struct timer_list mesh_path_timer; 542 struct timer_list mesh_path_root_timer; 543 544 unsigned long wrkq_flags; 545 unsigned long mbss_changed; 546 547 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 548 size_t mesh_id_len; 549 /* Active Path Selection Protocol Identifier */ 550 u8 mesh_pp_id; 551 /* Active Path Selection Metric Identifier */ 552 u8 mesh_pm_id; 553 /* Congestion Control Mode Identifier */ 554 u8 mesh_cc_id; 555 /* Synchronization Protocol Identifier */ 556 u8 mesh_sp_id; 557 /* Authentication Protocol Identifier */ 558 u8 mesh_auth_id; 559 /* Local mesh Sequence Number */ 560 u32 sn; 561 /* Last used PREQ ID */ 562 u32 preq_id; 563 atomic_t mpaths; 564 /* Timestamp of last SN update */ 565 unsigned long last_sn_update; 566 /* Time when it's ok to send next PERR */ 567 unsigned long next_perr; 568 /* Timestamp of last PREQ sent */ 569 unsigned long last_preq; 570 struct mesh_rmc *rmc; 571 spinlock_t mesh_preq_queue_lock; 572 struct mesh_preq_queue preq_queue; 573 int preq_queue_len; 574 struct mesh_stats mshstats; 575 struct mesh_config mshcfg; 576 atomic_t estab_plinks; 577 u32 mesh_seqnum; 578 bool accepting_plinks; 579 int num_gates; 580 struct beacon_data __rcu *beacon; 581 const u8 *ie; 582 u8 ie_len; 583 enum { 584 IEEE80211_MESH_SEC_NONE = 0x0, 585 IEEE80211_MESH_SEC_AUTHED = 0x1, 586 IEEE80211_MESH_SEC_SECURED = 0x2, 587 } security; 588 bool user_mpm; 589 /* Extensible Synchronization Framework */ 590 const struct ieee80211_mesh_sync_ops *sync_ops; 591 s64 sync_offset_clockdrift_max; 592 spinlock_t sync_offset_lock; 593 bool adjusting_tbtt; 594 /* mesh power save */ 595 enum nl80211_mesh_power_mode nonpeer_pm; 596 int ps_peers_light_sleep; 597 int ps_peers_deep_sleep; 598 struct ps_data ps; 599 }; 600 601 #ifdef CONFIG_MAC80211_MESH 602 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 603 do { (msh)->mshstats.name++; } while (0) 604 #else 605 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 606 do { } while (0) 607 #endif 608 609 /** 610 * enum ieee80211_sub_if_data_flags - virtual interface flags 611 * 612 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 613 * @IEEE80211_SDATA_PROMISC: interface is promisc 614 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 615 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 616 * associated stations and deliver multicast frames both 617 * back to wireless media and to the local net stack. 618 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 619 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 620 */ 621 enum ieee80211_sub_if_data_flags { 622 IEEE80211_SDATA_ALLMULTI = BIT(0), 623 IEEE80211_SDATA_PROMISC = BIT(1), 624 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 625 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 626 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 627 IEEE80211_SDATA_IN_DRIVER = BIT(5), 628 }; 629 630 /** 631 * enum ieee80211_sdata_state_bits - virtual interface state bits 632 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 633 * mirrors netif_running() but is separate for interface type 634 * change handling while the interface is up 635 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 636 * mode, so queues are stopped 637 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 638 * to offchannel, reset when offchannel returns 639 */ 640 enum ieee80211_sdata_state_bits { 641 SDATA_STATE_RUNNING, 642 SDATA_STATE_OFFCHANNEL, 643 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 644 }; 645 646 /** 647 * enum ieee80211_chanctx_mode - channel context configuration mode 648 * 649 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 650 * multiple interfaces 651 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 652 * only by a single interface. This can be used for example for 653 * non-fixed channel IBSS. 654 */ 655 enum ieee80211_chanctx_mode { 656 IEEE80211_CHANCTX_SHARED, 657 IEEE80211_CHANCTX_EXCLUSIVE 658 }; 659 660 struct ieee80211_chanctx { 661 struct list_head list; 662 struct rcu_head rcu_head; 663 664 enum ieee80211_chanctx_mode mode; 665 int refcount; 666 bool driver_present; 667 668 struct ieee80211_chanctx_conf conf; 669 }; 670 671 struct ieee80211_sub_if_data { 672 struct list_head list; 673 674 struct wireless_dev wdev; 675 676 /* keys */ 677 struct list_head key_list; 678 679 /* count for keys needing tailroom space allocation */ 680 int crypto_tx_tailroom_needed_cnt; 681 int crypto_tx_tailroom_pending_dec; 682 struct delayed_work dec_tailroom_needed_wk; 683 684 struct net_device *dev; 685 struct ieee80211_local *local; 686 687 unsigned int flags; 688 689 unsigned long state; 690 691 int drop_unencrypted; 692 693 char name[IFNAMSIZ]; 694 695 /* Fragment table for host-based reassembly */ 696 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 697 unsigned int fragment_next; 698 699 /* TID bitmap for NoAck policy */ 700 u16 noack_map; 701 702 /* bit field of ACM bits (BIT(802.1D tag)) */ 703 u8 wmm_acm; 704 705 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 706 struct ieee80211_key __rcu *default_unicast_key; 707 struct ieee80211_key __rcu *default_multicast_key; 708 struct ieee80211_key __rcu *default_mgmt_key; 709 710 u16 sequence_number; 711 __be16 control_port_protocol; 712 bool control_port_no_encrypt; 713 714 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 715 716 /* used to reconfigure hardware SM PS */ 717 struct work_struct recalc_smps; 718 719 struct work_struct work; 720 struct sk_buff_head skb_queue; 721 722 u8 needed_rx_chains; 723 enum ieee80211_smps_mode smps_mode; 724 725 int user_power_level; /* in dBm */ 726 int ap_power_level; /* in dBm */ 727 728 bool radar_required; 729 struct delayed_work dfs_cac_timer_work; 730 731 /* 732 * AP this belongs to: self in AP mode and 733 * corresponding AP in VLAN mode, NULL for 734 * all others (might be needed later in IBSS) 735 */ 736 struct ieee80211_if_ap *bss; 737 738 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 739 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 740 741 bool rc_has_mcs_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 *subdir_stations; 761 struct dentry *default_unicast_key; 762 struct dentry *default_multicast_key; 763 struct dentry *default_mgmt_key; 764 } debugfs; 765 #endif 766 767 /* must be last, dynamically sized area in this! */ 768 struct ieee80211_vif vif; 769 }; 770 771 static inline 772 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 773 { 774 return container_of(p, struct ieee80211_sub_if_data, vif); 775 } 776 777 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 778 __acquires(&sdata->wdev.mtx) 779 { 780 mutex_lock(&sdata->wdev.mtx); 781 __acquire(&sdata->wdev.mtx); 782 } 783 784 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 785 __releases(&sdata->wdev.mtx) 786 { 787 mutex_unlock(&sdata->wdev.mtx); 788 __release(&sdata->wdev.mtx); 789 } 790 791 static inline void 792 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 793 { 794 lockdep_assert_held(&sdata->wdev.mtx); 795 } 796 797 static inline enum ieee80211_band 798 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 799 { 800 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 801 struct ieee80211_chanctx_conf *chanctx_conf; 802 803 rcu_read_lock(); 804 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 805 if (!WARN_ON(!chanctx_conf)) 806 band = chanctx_conf->def.chan->band; 807 rcu_read_unlock(); 808 809 return band; 810 } 811 812 enum sdata_queue_type { 813 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 814 IEEE80211_SDATA_QUEUE_AGG_START = 1, 815 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 816 }; 817 818 enum { 819 IEEE80211_RX_MSG = 1, 820 IEEE80211_TX_STATUS_MSG = 2, 821 }; 822 823 enum queue_stop_reason { 824 IEEE80211_QUEUE_STOP_REASON_DRIVER, 825 IEEE80211_QUEUE_STOP_REASON_PS, 826 IEEE80211_QUEUE_STOP_REASON_CSA, 827 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 828 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 829 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 830 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 831 IEEE80211_QUEUE_STOP_REASON_FLUSH, 832 }; 833 834 #ifdef CONFIG_MAC80211_LEDS 835 struct tpt_led_trigger { 836 struct led_trigger trig; 837 char name[32]; 838 const struct ieee80211_tpt_blink *blink_table; 839 unsigned int blink_table_len; 840 struct timer_list timer; 841 unsigned long prev_traffic; 842 unsigned long tx_bytes, rx_bytes; 843 unsigned int active, want; 844 bool running; 845 }; 846 #endif 847 848 /** 849 * mac80211 scan flags - currently active scan mode 850 * 851 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 852 * well be on the operating channel 853 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 854 * determine if we are on the operating channel or not 855 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 856 * channel. This should not interrupt normal traffic. 857 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 858 * that the scan completed. 859 * @SCAN_ABORTED: Set for our scan work function when the driver reported 860 * a scan complete for an aborted scan. 861 */ 862 enum { 863 SCAN_SW_SCANNING, 864 SCAN_HW_SCANNING, 865 SCAN_ONCHANNEL_SCANNING, 866 SCAN_COMPLETED, 867 SCAN_ABORTED, 868 }; 869 870 /** 871 * enum mac80211_scan_state - scan state machine states 872 * 873 * @SCAN_DECISION: Main entry point to the scan state machine, this state 874 * determines if we should keep on scanning or switch back to the 875 * operating channel 876 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 877 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 878 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 879 * send out data 880 * @SCAN_RESUME: Resume the scan and scan the next channel 881 * @SCAN_ABORT: Abort the scan and go back to operating channel 882 */ 883 enum mac80211_scan_state { 884 SCAN_DECISION, 885 SCAN_SET_CHANNEL, 886 SCAN_SEND_PROBE, 887 SCAN_SUSPEND, 888 SCAN_RESUME, 889 SCAN_ABORT, 890 }; 891 892 struct ieee80211_local { 893 /* embed the driver visible part. 894 * don't cast (use the static inlines below), but we keep 895 * it first anyway so they become a no-op */ 896 struct ieee80211_hw hw; 897 898 const struct ieee80211_ops *ops; 899 900 /* 901 * private workqueue to mac80211. mac80211 makes this accessible 902 * via ieee80211_queue_work() 903 */ 904 struct workqueue_struct *workqueue; 905 906 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 907 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 908 spinlock_t queue_stop_reason_lock; 909 910 int open_count; 911 int monitors, cooked_mntrs; 912 /* number of interfaces with corresponding FIF_ flags */ 913 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 914 fif_probe_req; 915 int probe_req_reg; 916 unsigned int filter_flags; /* FIF_* */ 917 918 bool wiphy_ciphers_allocated; 919 920 bool use_chanctx; 921 922 /* protects the aggregated multicast list and filter calls */ 923 spinlock_t filter_lock; 924 925 /* used for uploading changed mc list */ 926 struct work_struct reconfig_filter; 927 928 /* aggregated multicast list */ 929 struct netdev_hw_addr_list mc_list; 930 931 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 932 933 /* 934 * suspended is true if we finished all the suspend _and_ we have 935 * not yet come up from resume. This is to be used by mac80211 936 * to ensure driver sanity during suspend and mac80211's own 937 * sanity. It can eventually be used for WoW as well. 938 */ 939 bool suspended; 940 941 /* 942 * Resuming is true while suspended, but when we're reprogramming the 943 * hardware -- at that time it's allowed to use ieee80211_queue_work() 944 * again even though some other parts of the stack are still suspended 945 * and we still drop received frames to avoid waking the stack. 946 */ 947 bool resuming; 948 949 /* 950 * quiescing is true during the suspend process _only_ to 951 * ease timer cancelling etc. 952 */ 953 bool quiescing; 954 955 /* device is started */ 956 bool started; 957 958 /* device is during a HW reconfig */ 959 bool in_reconfig; 960 961 /* wowlan is enabled -- don't reconfig on resume */ 962 bool wowlan; 963 964 /* DFS/radar detection is enabled */ 965 bool radar_detect_enabled; 966 struct work_struct radar_detected_work; 967 968 /* number of RX chains the hardware has */ 969 u8 rx_chains; 970 971 int tx_headroom; /* required headroom for hardware/radiotap */ 972 973 /* Tasklet and skb queue to process calls from IRQ mode. All frames 974 * added to skb_queue will be processed, but frames in 975 * skb_queue_unreliable may be dropped if the total length of these 976 * queues increases over the limit. */ 977 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 978 struct tasklet_struct tasklet; 979 struct sk_buff_head skb_queue; 980 struct sk_buff_head skb_queue_unreliable; 981 982 spinlock_t rx_path_lock; 983 984 /* Station data */ 985 /* 986 * The mutex only protects the list, hash table and 987 * counter, reads are done with RCU. 988 */ 989 struct mutex sta_mtx; 990 spinlock_t tim_lock; 991 unsigned long num_sta; 992 struct list_head sta_list; 993 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 994 struct timer_list sta_cleanup; 995 int sta_generation; 996 997 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 998 struct tasklet_struct tx_pending_tasklet; 999 1000 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1001 1002 /* number of interfaces with corresponding IFF_ flags */ 1003 atomic_t iff_allmultis, iff_promiscs; 1004 1005 struct rate_control_ref *rate_ctrl; 1006 1007 struct crypto_cipher *wep_tx_tfm; 1008 struct crypto_cipher *wep_rx_tfm; 1009 u32 wep_iv; 1010 1011 /* see iface.c */ 1012 struct list_head interfaces; 1013 struct mutex iflist_mtx; 1014 1015 /* 1016 * Key mutex, protects sdata's key_list and sta_info's 1017 * key pointers (write access, they're RCU.) 1018 */ 1019 struct mutex key_mtx; 1020 1021 /* mutex for scan and work locking */ 1022 struct mutex mtx; 1023 1024 /* Scanning and BSS list */ 1025 unsigned long scanning; 1026 struct cfg80211_ssid scan_ssid; 1027 struct cfg80211_scan_request *int_scan_req; 1028 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1029 struct ieee80211_channel *scan_channel; 1030 enum ieee80211_band hw_scan_band; 1031 int scan_channel_idx; 1032 int scan_ies_len; 1033 int hw_scan_ies_bufsize; 1034 1035 struct work_struct sched_scan_stopped_work; 1036 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1037 1038 unsigned long leave_oper_channel_time; 1039 enum mac80211_scan_state next_scan_state; 1040 struct delayed_work scan_work; 1041 struct ieee80211_sub_if_data __rcu *scan_sdata; 1042 struct cfg80211_chan_def csa_chandef; 1043 /* For backward compatibility only -- do not use */ 1044 struct cfg80211_chan_def _oper_chandef; 1045 1046 /* Temporary remain-on-channel for off-channel operations */ 1047 struct ieee80211_channel *tmp_channel; 1048 1049 /* channel contexts */ 1050 struct list_head chanctx_list; 1051 struct mutex chanctx_mtx; 1052 1053 /* SNMP counters */ 1054 /* dot11CountersTable */ 1055 u32 dot11TransmittedFragmentCount; 1056 u32 dot11MulticastTransmittedFrameCount; 1057 u32 dot11FailedCount; 1058 u32 dot11RetryCount; 1059 u32 dot11MultipleRetryCount; 1060 u32 dot11FrameDuplicateCount; 1061 u32 dot11ReceivedFragmentCount; 1062 u32 dot11MulticastReceivedFrameCount; 1063 u32 dot11TransmittedFrameCount; 1064 1065 #ifdef CONFIG_MAC80211_LEDS 1066 int tx_led_counter, rx_led_counter; 1067 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1068 struct tpt_led_trigger *tpt_led_trigger; 1069 char tx_led_name[32], rx_led_name[32], 1070 assoc_led_name[32], radio_led_name[32]; 1071 #endif 1072 1073 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1074 /* TX/RX handler statistics */ 1075 unsigned int tx_handlers_drop; 1076 unsigned int tx_handlers_queued; 1077 unsigned int tx_handlers_drop_unencrypted; 1078 unsigned int tx_handlers_drop_fragment; 1079 unsigned int tx_handlers_drop_wep; 1080 unsigned int tx_handlers_drop_not_assoc; 1081 unsigned int tx_handlers_drop_unauth_port; 1082 unsigned int rx_handlers_drop; 1083 unsigned int rx_handlers_queued; 1084 unsigned int rx_handlers_drop_nullfunc; 1085 unsigned int rx_handlers_drop_defrag; 1086 unsigned int rx_handlers_drop_short; 1087 unsigned int tx_expand_skb_head; 1088 unsigned int tx_expand_skb_head_cloned; 1089 unsigned int rx_expand_skb_head; 1090 unsigned int rx_expand_skb_head2; 1091 unsigned int rx_handlers_fragments; 1092 unsigned int tx_status_drop; 1093 #define I802_DEBUG_INC(c) (c)++ 1094 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1095 #define I802_DEBUG_INC(c) do { } while (0) 1096 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1097 1098 1099 int total_ps_buffered; /* total number of all buffered unicast and 1100 * multicast packets for power saving stations 1101 */ 1102 1103 bool pspolling; 1104 bool offchannel_ps_enabled; 1105 /* 1106 * PS can only be enabled when we have exactly one managed 1107 * interface (and monitors) in PS, this then points there. 1108 */ 1109 struct ieee80211_sub_if_data *ps_sdata; 1110 struct work_struct dynamic_ps_enable_work; 1111 struct work_struct dynamic_ps_disable_work; 1112 struct timer_list dynamic_ps_timer; 1113 struct notifier_block network_latency_notifier; 1114 struct notifier_block ifa_notifier; 1115 struct notifier_block ifa6_notifier; 1116 1117 /* 1118 * The dynamic ps timeout configured from user space via WEXT - 1119 * this will override whatever chosen by mac80211 internally. 1120 */ 1121 int dynamic_ps_forced_timeout; 1122 1123 int user_power_level; /* in dBm, for all interfaces */ 1124 1125 enum ieee80211_smps_mode smps_mode; 1126 1127 struct work_struct restart_work; 1128 1129 #ifdef CONFIG_MAC80211_DEBUGFS 1130 struct local_debugfsdentries { 1131 struct dentry *rcdir; 1132 struct dentry *keys; 1133 } debugfs; 1134 #endif 1135 1136 /* 1137 * Remain-on-channel support 1138 */ 1139 struct list_head roc_list; 1140 struct work_struct hw_roc_start, hw_roc_done; 1141 unsigned long hw_roc_start_time; 1142 u64 roc_cookie_counter; 1143 1144 struct idr ack_status_frames; 1145 spinlock_t ack_status_lock; 1146 1147 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1148 1149 /* virtual monitor interface */ 1150 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1151 struct cfg80211_chan_def monitor_chandef; 1152 }; 1153 1154 static inline struct ieee80211_sub_if_data * 1155 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1156 { 1157 return netdev_priv(dev); 1158 } 1159 1160 static inline struct ieee80211_sub_if_data * 1161 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1162 { 1163 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1164 } 1165 1166 /* this struct represents 802.11n's RA/TID combination */ 1167 struct ieee80211_ra_tid { 1168 u8 ra[ETH_ALEN]; 1169 u16 tid; 1170 }; 1171 1172 /* Parsed Information Elements */ 1173 struct ieee802_11_elems { 1174 const u8 *ie_start; 1175 size_t total_len; 1176 1177 /* pointers to IEs */ 1178 const u8 *ssid; 1179 const u8 *supp_rates; 1180 const u8 *ds_params; 1181 const struct ieee80211_tim_ie *tim; 1182 const u8 *challenge; 1183 const u8 *rsn; 1184 const u8 *erp_info; 1185 const u8 *ext_supp_rates; 1186 const u8 *wmm_info; 1187 const u8 *wmm_param; 1188 const struct ieee80211_ht_cap *ht_cap_elem; 1189 const struct ieee80211_ht_operation *ht_operation; 1190 const struct ieee80211_vht_cap *vht_cap_elem; 1191 const struct ieee80211_vht_operation *vht_operation; 1192 const struct ieee80211_meshconf_ie *mesh_config; 1193 const u8 *mesh_id; 1194 const u8 *peering; 1195 const __le16 *awake_window; 1196 const u8 *preq; 1197 const u8 *prep; 1198 const u8 *perr; 1199 const struct ieee80211_rann_ie *rann; 1200 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1201 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1202 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1203 const u8 *country_elem; 1204 const u8 *pwr_constr_elem; 1205 const struct ieee80211_timeout_interval_ie *timeout_int; 1206 const u8 *opmode_notif; 1207 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1208 1209 /* length of them, respectively */ 1210 u8 ssid_len; 1211 u8 supp_rates_len; 1212 u8 tim_len; 1213 u8 challenge_len; 1214 u8 rsn_len; 1215 u8 ext_supp_rates_len; 1216 u8 wmm_info_len; 1217 u8 wmm_param_len; 1218 u8 mesh_id_len; 1219 u8 peering_len; 1220 u8 preq_len; 1221 u8 prep_len; 1222 u8 perr_len; 1223 u8 country_elem_len; 1224 1225 /* whether a parse error occurred while retrieving these elements */ 1226 bool parse_error; 1227 }; 1228 1229 static inline struct ieee80211_local *hw_to_local( 1230 struct ieee80211_hw *hw) 1231 { 1232 return container_of(hw, struct ieee80211_local, hw); 1233 } 1234 1235 1236 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1237 { 1238 return ether_addr_equal(raddr, addr) || 1239 is_broadcast_ether_addr(raddr); 1240 } 1241 1242 static inline bool 1243 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1244 { 1245 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1246 status->flag & RX_FLAG_MACTIME_END); 1247 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1248 } 1249 1250 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1251 struct ieee80211_rx_status *status, 1252 unsigned int mpdu_len, 1253 unsigned int mpdu_offset); 1254 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1255 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1256 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1257 u32 changed); 1258 void ieee80211_configure_filter(struct ieee80211_local *local); 1259 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1260 1261 /* STA code */ 1262 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1263 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1264 struct cfg80211_auth_request *req); 1265 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1266 struct cfg80211_assoc_request *req); 1267 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1268 struct cfg80211_deauth_request *req); 1269 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1270 struct cfg80211_disassoc_request *req); 1271 void ieee80211_send_pspoll(struct ieee80211_local *local, 1272 struct ieee80211_sub_if_data *sdata); 1273 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1274 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1275 int ieee80211_max_network_latency(struct notifier_block *nb, 1276 unsigned long data, void *dummy); 1277 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1278 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1279 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1280 struct sk_buff *skb); 1281 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1282 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1283 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1284 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1285 __le16 fc, bool acked); 1286 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1287 1288 /* IBSS code */ 1289 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1290 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1291 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1292 const u8 *bssid, const u8 *addr, u32 supp_rates); 1293 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1294 struct cfg80211_ibss_params *params); 1295 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1296 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1297 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1298 struct sk_buff *skb); 1299 1300 /* mesh code */ 1301 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1302 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1303 struct sk_buff *skb); 1304 1305 /* scan/BSS handling */ 1306 void ieee80211_scan_work(struct work_struct *work); 1307 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1308 const u8 *ssid, u8 ssid_len, 1309 struct ieee80211_channel *chan); 1310 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1311 struct cfg80211_scan_request *req); 1312 void ieee80211_scan_cancel(struct ieee80211_local *local); 1313 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1314 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1315 1316 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1317 struct ieee80211_bss * 1318 ieee80211_bss_info_update(struct ieee80211_local *local, 1319 struct ieee80211_rx_status *rx_status, 1320 struct ieee80211_mgmt *mgmt, 1321 size_t len, 1322 struct ieee802_11_elems *elems, 1323 struct ieee80211_channel *channel); 1324 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1325 struct ieee80211_bss *bss); 1326 1327 /* scheduled scan handling */ 1328 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1329 struct cfg80211_sched_scan_request *req); 1330 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1331 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1332 1333 /* off-channel helpers */ 1334 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1335 void ieee80211_offchannel_return(struct ieee80211_local *local); 1336 void ieee80211_roc_setup(struct ieee80211_local *local); 1337 void ieee80211_start_next_roc(struct ieee80211_local *local); 1338 void ieee80211_roc_purge(struct ieee80211_local *local, 1339 struct ieee80211_sub_if_data *sdata); 1340 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free); 1341 void ieee80211_sw_roc_work(struct work_struct *work); 1342 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1343 1344 /* interface handling */ 1345 int ieee80211_iface_init(void); 1346 void ieee80211_iface_exit(void); 1347 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1348 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1349 struct vif_params *params); 1350 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1351 enum nl80211_iftype type); 1352 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1353 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1354 u32 ieee80211_idle_off(struct ieee80211_local *local); 1355 void ieee80211_recalc_idle(struct ieee80211_local *local); 1356 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1357 const int offset); 1358 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1359 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1360 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1361 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1362 1363 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1364 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1365 1366 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1367 { 1368 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1369 } 1370 1371 /* tx handling */ 1372 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1373 void ieee80211_tx_pending(unsigned long data); 1374 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1375 struct net_device *dev); 1376 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1377 struct net_device *dev); 1378 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1379 struct sk_buff_head *skbs); 1380 1381 /* HT */ 1382 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1383 struct ieee80211_sta_ht_cap *ht_cap); 1384 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1385 struct ieee80211_supported_band *sband, 1386 const struct ieee80211_ht_cap *ht_cap_ie, 1387 struct sta_info *sta); 1388 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1389 const u8 *da, u16 tid, 1390 u16 initiator, u16 reason_code); 1391 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1392 enum ieee80211_smps_mode smps, const u8 *da, 1393 const u8 *bssid); 1394 void ieee80211_request_smps_work(struct work_struct *work); 1395 1396 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1397 u16 initiator, u16 reason, bool stop); 1398 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1399 u16 initiator, u16 reason, bool stop); 1400 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1401 enum ieee80211_agg_stop_reason reason); 1402 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1403 struct sta_info *sta, 1404 struct ieee80211_mgmt *mgmt, size_t len); 1405 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1406 struct sta_info *sta, 1407 struct ieee80211_mgmt *mgmt, 1408 size_t len); 1409 void ieee80211_process_addba_request(struct ieee80211_local *local, 1410 struct sta_info *sta, 1411 struct ieee80211_mgmt *mgmt, 1412 size_t len); 1413 1414 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1415 enum ieee80211_agg_stop_reason reason); 1416 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1417 enum ieee80211_agg_stop_reason reason); 1418 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1419 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1420 void ieee80211_ba_session_work(struct work_struct *work); 1421 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1422 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1423 1424 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1425 1426 /* VHT */ 1427 void 1428 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1429 struct ieee80211_supported_band *sband, 1430 const struct ieee80211_vht_cap *vht_cap_ie, 1431 struct sta_info *sta); 1432 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1433 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1434 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1435 struct sta_info *sta, u8 opmode, 1436 enum ieee80211_band band, bool nss_only); 1437 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1438 struct ieee80211_sta_vht_cap *vht_cap); 1439 1440 /* Spectrum management */ 1441 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1442 struct ieee80211_mgmt *mgmt, 1443 size_t len); 1444 1445 /* Suspend/resume and hw reconfiguration */ 1446 int ieee80211_reconfig(struct ieee80211_local *local); 1447 void ieee80211_stop_device(struct ieee80211_local *local); 1448 1449 int __ieee80211_suspend(struct ieee80211_hw *hw, 1450 struct cfg80211_wowlan *wowlan); 1451 1452 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1453 { 1454 struct ieee80211_local *local = hw_to_local(hw); 1455 1456 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1457 "%s: resume with hardware scan still in progress\n", 1458 wiphy_name(hw->wiphy)); 1459 1460 return ieee80211_reconfig(hw_to_local(hw)); 1461 } 1462 1463 /* utility functions/constants */ 1464 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1465 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1466 enum nl80211_iftype type); 1467 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1468 int rate, int erp, int short_preamble); 1469 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1470 struct ieee80211_hdr *hdr, const u8 *tsc, 1471 gfp_t gfp); 1472 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1473 bool bss_notify); 1474 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1475 enum ieee80211_band band); 1476 1477 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1478 struct sk_buff *skb, int tid, 1479 enum ieee80211_band band); 1480 1481 static inline void 1482 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 rcu_read_lock(); 1487 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1488 rcu_read_unlock(); 1489 } 1490 1491 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1492 struct sk_buff *skb, int tid) 1493 { 1494 struct ieee80211_chanctx_conf *chanctx_conf; 1495 1496 rcu_read_lock(); 1497 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1498 if (WARN_ON(!chanctx_conf)) { 1499 rcu_read_unlock(); 1500 kfree_skb(skb); 1501 return; 1502 } 1503 1504 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1505 chanctx_conf->def.chan->band); 1506 rcu_read_unlock(); 1507 } 1508 1509 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1510 struct sk_buff *skb) 1511 { 1512 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1513 ieee80211_tx_skb_tid(sdata, skb, 7); 1514 } 1515 1516 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1517 struct ieee802_11_elems *elems, 1518 u64 filter, u32 crc); 1519 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1520 bool action, 1521 struct ieee802_11_elems *elems) 1522 { 1523 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1524 } 1525 1526 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1527 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1528 void ieee80211_dynamic_ps_timer(unsigned long data); 1529 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1530 struct ieee80211_sub_if_data *sdata, 1531 int powersave); 1532 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1533 struct ieee80211_hdr *hdr); 1534 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1535 struct ieee80211_hdr *hdr, bool ack); 1536 1537 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1538 unsigned long queues, 1539 enum queue_stop_reason reason); 1540 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1541 unsigned long queues, 1542 enum queue_stop_reason reason); 1543 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1544 enum queue_stop_reason reason); 1545 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1546 enum queue_stop_reason reason); 1547 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1548 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1549 struct sk_buff *skb); 1550 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1551 struct sk_buff_head *skbs, 1552 void (*fn)(void *data), void *data); 1553 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1554 struct sk_buff_head *skbs) 1555 { 1556 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1557 } 1558 void ieee80211_flush_queues(struct ieee80211_local *local, 1559 struct ieee80211_sub_if_data *sdata); 1560 1561 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1562 u16 transaction, u16 auth_alg, u16 status, 1563 const u8 *extra, size_t extra_len, const u8 *bssid, 1564 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 1565 u32 tx_flags); 1566 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1567 const u8 *bssid, u16 stype, u16 reason, 1568 bool send_frame, u8 *frame_buf); 1569 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1570 size_t buffer_len, const u8 *ie, size_t ie_len, 1571 enum ieee80211_band band, u32 rate_mask, 1572 u8 channel); 1573 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1574 u8 *dst, u32 ratemask, 1575 struct ieee80211_channel *chan, 1576 const u8 *ssid, size_t ssid_len, 1577 const u8 *ie, size_t ie_len, 1578 bool directed); 1579 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1580 const u8 *ssid, size_t ssid_len, 1581 const u8 *ie, size_t ie_len, 1582 u32 ratemask, bool directed, u32 tx_flags, 1583 struct ieee80211_channel *channel, bool scan); 1584 1585 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1586 const size_t supp_rates_len, 1587 const u8 *supp_rates); 1588 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1589 struct ieee802_11_elems *elems, 1590 enum ieee80211_band band, u32 *basic_rates); 1591 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1592 enum ieee80211_smps_mode smps_mode); 1593 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1594 1595 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1596 const u8 *ids, int n_ids, size_t offset); 1597 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1598 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1599 u16 cap); 1600 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1601 const struct cfg80211_chan_def *chandef, 1602 u16 prot_mode); 1603 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1604 u32 cap); 1605 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1606 struct sk_buff *skb, bool need_basic, 1607 enum ieee80211_band band); 1608 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1609 struct sk_buff *skb, bool need_basic, 1610 enum ieee80211_band band); 1611 1612 /* channel management */ 1613 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1614 const struct ieee80211_ht_operation *ht_oper, 1615 struct cfg80211_chan_def *chandef); 1616 1617 int __must_check 1618 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1619 const struct cfg80211_chan_def *chandef, 1620 enum ieee80211_chanctx_mode mode); 1621 int __must_check 1622 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 1623 const struct cfg80211_chan_def *chandef, 1624 u32 *changed); 1625 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1626 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 1627 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 1628 bool clear); 1629 1630 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1631 struct ieee80211_chanctx *chanctx); 1632 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, 1633 struct ieee80211_chanctx *chanctx); 1634 1635 void ieee80211_dfs_cac_timer(unsigned long data); 1636 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 1637 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 1638 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 1639 1640 #ifdef CONFIG_MAC80211_NOINLINE 1641 #define debug_noinline noinline 1642 #else 1643 #define debug_noinline 1644 #endif 1645 1646 #endif /* IEEE80211_I_H */ 1647