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 /* don't want to look up all the time */ 90 size_t ssid_len; 91 u8 ssid[IEEE80211_MAX_SSID_LEN]; 92 93 u32 device_ts; 94 95 u8 dtim_period; 96 97 bool wmm_used; 98 bool uapsd_supported; 99 100 unsigned long last_probe_resp; 101 102 #ifdef CONFIG_MAC80211_MESH 103 u8 *mesh_id; 104 size_t mesh_id_len; 105 u8 *mesh_cfg; 106 #endif 107 108 #define IEEE80211_MAX_SUPP_RATES 32 109 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 110 size_t supp_rates_len; 111 112 /* 113 * During association, we save an ERP value from a probe response so 114 * that we can feed ERP info to the driver when handling the 115 * association completes. these fields probably won't be up-to-date 116 * otherwise, you probably don't want to use them. 117 */ 118 bool has_erp_value; 119 u8 erp_value; 120 121 /* Keep track of the corruption of the last beacon/probe response. */ 122 u8 corrupt_data; 123 124 /* Keep track of what bits of information we have valid info for. */ 125 u8 valid_data; 126 }; 127 128 /** 129 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 130 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 131 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 132 * 133 * These are bss flags that are attached to a bss in the 134 * @corrupt_data field of &struct ieee80211_bss. 135 */ 136 enum ieee80211_bss_corrupt_data_flags { 137 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 138 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 139 }; 140 141 /** 142 * enum ieee80211_valid_data_flags - BSS valid data flags 143 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE 144 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 145 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 146 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 147 * 148 * These are bss flags that are attached to a bss in the 149 * @valid_data field of &struct ieee80211_bss. They show which parts 150 * of the data structure were recieved as a result of an un-corrupted 151 * beacon/probe response. 152 */ 153 enum ieee80211_bss_valid_data_flags { 154 IEEE80211_BSS_VALID_DTIM = BIT(0), 155 IEEE80211_BSS_VALID_WMM = BIT(1), 156 IEEE80211_BSS_VALID_RATES = BIT(2), 157 IEEE80211_BSS_VALID_ERP = BIT(3) 158 }; 159 160 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 161 { 162 #ifdef CONFIG_MAC80211_MESH 163 return bss->mesh_cfg; 164 #endif 165 return NULL; 166 } 167 168 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 169 { 170 #ifdef CONFIG_MAC80211_MESH 171 return bss->mesh_id; 172 #endif 173 return NULL; 174 } 175 176 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 177 { 178 #ifdef CONFIG_MAC80211_MESH 179 return bss->mesh_id_len; 180 #endif 181 return 0; 182 } 183 184 185 typedef unsigned __bitwise__ ieee80211_tx_result; 186 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 187 #define TX_DROP ((__force ieee80211_tx_result) 1u) 188 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 189 190 #define IEEE80211_TX_UNICAST BIT(1) 191 #define IEEE80211_TX_PS_BUFFERED BIT(2) 192 193 struct ieee80211_tx_data { 194 struct sk_buff *skb; 195 struct sk_buff_head skbs; 196 struct ieee80211_local *local; 197 struct ieee80211_sub_if_data *sdata; 198 struct sta_info *sta; 199 struct ieee80211_key *key; 200 201 unsigned int flags; 202 }; 203 204 205 typedef unsigned __bitwise__ ieee80211_rx_result; 206 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 207 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 208 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 209 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 210 211 /** 212 * enum ieee80211_packet_rx_flags - packet RX flags 213 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 214 * (incl. multicast frames) 215 * @IEEE80211_RX_FRAGMENTED: fragmented frame 216 * @IEEE80211_RX_AMSDU: a-MSDU packet 217 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 218 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 219 * 220 * These are per-frame flags that are attached to a frame in the 221 * @rx_flags field of &struct ieee80211_rx_status. 222 */ 223 enum ieee80211_packet_rx_flags { 224 IEEE80211_RX_RA_MATCH = BIT(1), 225 IEEE80211_RX_FRAGMENTED = BIT(2), 226 IEEE80211_RX_AMSDU = BIT(3), 227 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 228 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 229 }; 230 231 /** 232 * enum ieee80211_rx_flags - RX data flags 233 * 234 * @IEEE80211_RX_CMNTR: received on cooked monitor already 235 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 236 * to cfg80211_report_obss_beacon(). 237 * 238 * These flags are used across handling multiple interfaces 239 * for a single frame. 240 */ 241 enum ieee80211_rx_flags { 242 IEEE80211_RX_CMNTR = BIT(0), 243 IEEE80211_RX_BEACON_REPORTED = BIT(1), 244 }; 245 246 struct ieee80211_rx_data { 247 struct sk_buff *skb; 248 struct ieee80211_local *local; 249 struct ieee80211_sub_if_data *sdata; 250 struct sta_info *sta; 251 struct ieee80211_key *key; 252 253 unsigned int flags; 254 255 /* 256 * Index into sequence numbers array, 0..16 257 * since the last (16) is used for non-QoS, 258 * will be 16 on non-QoS frames. 259 */ 260 int seqno_idx; 261 262 /* 263 * Index into the security IV/PN arrays, 0..16 264 * since the last (16) is used for CCMP-encrypted 265 * management frames, will be set to 16 on mgmt 266 * frames and 0 on non-QoS frames. 267 */ 268 int security_idx; 269 270 u32 tkip_iv32; 271 u16 tkip_iv16; 272 }; 273 274 struct beacon_data { 275 u8 *head, *tail; 276 int head_len, tail_len; 277 struct rcu_head rcu_head; 278 }; 279 280 struct probe_resp { 281 struct rcu_head rcu_head; 282 int len; 283 u8 data[0]; 284 }; 285 286 struct ps_data { 287 /* yes, this looks ugly, but guarantees that we can later use 288 * bitmap_empty :) 289 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 290 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 291 struct sk_buff_head bc_buf; 292 atomic_t num_sta_ps; /* number of stations in PS mode */ 293 int dtim_count; 294 bool dtim_bc_mc; 295 }; 296 297 struct ieee80211_if_ap { 298 struct beacon_data __rcu *beacon; 299 struct probe_resp __rcu *probe_resp; 300 301 struct list_head vlans; 302 303 struct ps_data ps; 304 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 305 }; 306 307 struct ieee80211_if_wds { 308 struct sta_info *sta; 309 u8 remote_addr[ETH_ALEN]; 310 }; 311 312 struct ieee80211_if_vlan { 313 struct list_head list; 314 315 /* used for all tx if the VLAN is configured to 4-addr mode */ 316 struct sta_info __rcu *sta; 317 }; 318 319 struct mesh_stats { 320 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 321 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 322 __u32 fwded_frames; /* Mesh total forwarded frames */ 323 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 324 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 325 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 326 }; 327 328 #define PREQ_Q_F_START 0x1 329 #define PREQ_Q_F_REFRESH 0x2 330 struct mesh_preq_queue { 331 struct list_head list; 332 u8 dst[ETH_ALEN]; 333 u8 flags; 334 }; 335 336 #if HZ/100 == 0 337 #define IEEE80211_ROC_MIN_LEFT 1 338 #else 339 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 340 #endif 341 342 struct ieee80211_roc_work { 343 struct list_head list; 344 struct list_head dependents; 345 346 struct delayed_work work; 347 348 struct ieee80211_sub_if_data *sdata; 349 350 struct ieee80211_channel *chan; 351 352 bool started, abort, hw_begun, notified; 353 354 unsigned long hw_start_time; 355 356 u32 duration, req_duration; 357 struct sk_buff *frame; 358 u64 cookie, mgmt_tx_cookie; 359 }; 360 361 /* flags used in struct ieee80211_if_managed.flags */ 362 enum ieee80211_sta_flags { 363 IEEE80211_STA_BEACON_POLL = BIT(0), 364 IEEE80211_STA_CONNECTION_POLL = BIT(1), 365 IEEE80211_STA_CONTROL_PORT = BIT(2), 366 IEEE80211_STA_DISABLE_HT = BIT(4), 367 IEEE80211_STA_CSA_RECEIVED = BIT(5), 368 IEEE80211_STA_MFP_ENABLED = BIT(6), 369 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 370 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 371 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 372 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 373 IEEE80211_STA_DISABLE_VHT = BIT(11), 374 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 375 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 376 }; 377 378 struct ieee80211_mgd_auth_data { 379 struct cfg80211_bss *bss; 380 unsigned long timeout; 381 int tries; 382 u16 algorithm, expected_transaction; 383 384 u8 key[WLAN_KEY_LEN_WEP104]; 385 u8 key_len, key_idx; 386 bool done; 387 388 u16 sae_trans, sae_status; 389 size_t data_len; 390 u8 data[]; 391 }; 392 393 struct ieee80211_mgd_assoc_data { 394 struct cfg80211_bss *bss; 395 const u8 *supp_rates; 396 397 unsigned long timeout; 398 int tries; 399 400 u16 capability; 401 u8 prev_bssid[ETH_ALEN]; 402 u8 ssid[IEEE80211_MAX_SSID_LEN]; 403 u8 ssid_len; 404 u8 supp_rates_len; 405 bool wmm, uapsd; 406 bool have_beacon; 407 bool sent_assoc; 408 bool synced; 409 410 u8 ap_ht_param; 411 412 size_t ie_len; 413 u8 ie[]; 414 }; 415 416 struct ieee80211_if_managed { 417 struct timer_list timer; 418 struct timer_list conn_mon_timer; 419 struct timer_list bcn_mon_timer; 420 struct timer_list chswitch_timer; 421 struct work_struct monitor_work; 422 struct work_struct chswitch_work; 423 struct work_struct beacon_connection_loss_work; 424 struct work_struct csa_connection_drop_work; 425 426 unsigned long beacon_timeout; 427 unsigned long probe_timeout; 428 int probe_send_count; 429 bool nullfunc_failed; 430 431 struct mutex mtx; 432 struct cfg80211_bss *associated; 433 struct ieee80211_mgd_auth_data *auth_data; 434 struct ieee80211_mgd_assoc_data *assoc_data; 435 436 u8 bssid[ETH_ALEN]; 437 438 u16 aid; 439 440 unsigned long timers_running; /* used for quiesce/restart */ 441 bool powersave; /* powersave requested for this iface */ 442 bool broken_ap; /* AP is broken -- turn off powersave */ 443 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 444 driver_smps_mode; /* smps mode request */ 445 446 struct work_struct request_smps_work; 447 448 unsigned int flags; 449 450 bool beacon_crc_valid; 451 u32 beacon_crc; 452 453 enum { 454 IEEE80211_MFP_DISABLED, 455 IEEE80211_MFP_OPTIONAL, 456 IEEE80211_MFP_REQUIRED 457 } mfp; /* management frame protection */ 458 459 /* 460 * Bitmask of enabled u-apsd queues, 461 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 462 * to take effect. 463 */ 464 unsigned int uapsd_queues; 465 466 /* 467 * Maximum number of buffered frames AP can deliver during a 468 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 469 * Needs a new association to take effect. 470 */ 471 unsigned int uapsd_max_sp_len; 472 473 int wmm_last_param_set; 474 475 u8 use_4addr; 476 477 u8 p2p_noa_index; 478 479 /* Signal strength from the last Beacon frame in the current BSS. */ 480 int last_beacon_signal; 481 482 /* 483 * Weighted average of the signal strength from Beacon frames in the 484 * current BSS. This is in units of 1/16 of the signal unit to maintain 485 * accuracy and to speed up calculations, i.e., the value need to be 486 * divided by 16 to get the actual value. 487 */ 488 int ave_beacon_signal; 489 490 /* 491 * Number of Beacon frames used in ave_beacon_signal. This can be used 492 * to avoid generating less reliable cqm events that would be based 493 * only on couple of received frames. 494 */ 495 unsigned int count_beacon_signal; 496 497 /* 498 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 499 * that triggered a cqm event. 0 indicates that no event has been 500 * generated for the current association. 501 */ 502 int last_cqm_event_signal; 503 504 /* 505 * State variables for keeping track of RSSI of the AP currently 506 * connected to and informing driver when RSSI has gone 507 * below/above a certain threshold. 508 */ 509 int rssi_min_thold, rssi_max_thold; 510 int last_ave_beacon_signal; 511 512 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 513 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 514 }; 515 516 struct ieee80211_if_ibss { 517 struct timer_list timer; 518 519 struct mutex mtx; 520 521 unsigned long last_scan_completed; 522 523 u32 basic_rates; 524 525 bool timer_running; 526 527 bool fixed_bssid; 528 bool fixed_channel; 529 bool privacy; 530 531 bool control_port; 532 unsigned int auth_frame_registrations; 533 534 u8 bssid[ETH_ALEN] __aligned(2); 535 u8 ssid[IEEE80211_MAX_SSID_LEN]; 536 u8 ssid_len, ie_len; 537 u8 *ie; 538 struct ieee80211_channel *channel; 539 enum nl80211_channel_type channel_type; 540 541 unsigned long ibss_join_req; 542 /* probe response/beacon for IBSS */ 543 struct sk_buff __rcu *presp; 544 struct sk_buff *skb; 545 546 spinlock_t incomplete_lock; 547 struct list_head incomplete_stations; 548 549 enum { 550 IEEE80211_IBSS_MLME_SEARCH, 551 IEEE80211_IBSS_MLME_JOINED, 552 } state; 553 }; 554 555 /** 556 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 557 * 558 * these declarations define the interface, which enables 559 * vendor-specific mesh synchronization 560 * 561 */ 562 struct ieee802_11_elems; 563 struct ieee80211_mesh_sync_ops { 564 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 565 u16 stype, 566 struct ieee80211_mgmt *mgmt, 567 struct ieee802_11_elems *elems, 568 struct ieee80211_rx_status *rx_status); 569 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 570 /* add other framework functions here */ 571 }; 572 573 struct ieee80211_if_mesh { 574 struct timer_list housekeeping_timer; 575 struct timer_list mesh_path_timer; 576 struct timer_list mesh_path_root_timer; 577 578 unsigned long timers_running; 579 580 unsigned long wrkq_flags; 581 582 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 583 size_t mesh_id_len; 584 /* Active Path Selection Protocol Identifier */ 585 u8 mesh_pp_id; 586 /* Active Path Selection Metric Identifier */ 587 u8 mesh_pm_id; 588 /* Congestion Control Mode Identifier */ 589 u8 mesh_cc_id; 590 /* Synchronization Protocol Identifier */ 591 u8 mesh_sp_id; 592 /* Authentication Protocol Identifier */ 593 u8 mesh_auth_id; 594 /* Local mesh Sequence Number */ 595 u32 sn; 596 /* Last used PREQ ID */ 597 u32 preq_id; 598 atomic_t mpaths; 599 /* Timestamp of last SN update */ 600 unsigned long last_sn_update; 601 /* Time when it's ok to send next PERR */ 602 unsigned long next_perr; 603 /* Timestamp of last PREQ sent */ 604 unsigned long last_preq; 605 struct mesh_rmc *rmc; 606 spinlock_t mesh_preq_queue_lock; 607 struct mesh_preq_queue preq_queue; 608 int preq_queue_len; 609 struct mesh_stats mshstats; 610 struct mesh_config mshcfg; 611 atomic_t estab_plinks; 612 u32 mesh_seqnum; 613 bool accepting_plinks; 614 int num_gates; 615 const u8 *ie; 616 u8 ie_len; 617 enum { 618 IEEE80211_MESH_SEC_NONE = 0x0, 619 IEEE80211_MESH_SEC_AUTHED = 0x1, 620 IEEE80211_MESH_SEC_SECURED = 0x2, 621 } security; 622 /* Extensible Synchronization Framework */ 623 const struct ieee80211_mesh_sync_ops *sync_ops; 624 s64 sync_offset_clockdrift_max; 625 spinlock_t sync_offset_lock; 626 bool adjusting_tbtt; 627 }; 628 629 #ifdef CONFIG_MAC80211_MESH 630 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 631 do { (msh)->mshstats.name++; } while (0) 632 #else 633 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 634 do { } while (0) 635 #endif 636 637 /** 638 * enum ieee80211_sub_if_data_flags - virtual interface flags 639 * 640 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 641 * @IEEE80211_SDATA_PROMISC: interface is promisc 642 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 643 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 644 * associated stations and deliver multicast frames both 645 * back to wireless media and to the local net stack. 646 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 647 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 648 */ 649 enum ieee80211_sub_if_data_flags { 650 IEEE80211_SDATA_ALLMULTI = BIT(0), 651 IEEE80211_SDATA_PROMISC = BIT(1), 652 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 653 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 654 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 655 IEEE80211_SDATA_IN_DRIVER = BIT(5), 656 }; 657 658 /** 659 * enum ieee80211_sdata_state_bits - virtual interface state bits 660 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 661 * mirrors netif_running() but is separate for interface type 662 * change handling while the interface is up 663 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 664 * mode, so queues are stopped 665 */ 666 enum ieee80211_sdata_state_bits { 667 SDATA_STATE_RUNNING, 668 SDATA_STATE_OFFCHANNEL, 669 }; 670 671 /** 672 * enum ieee80211_chanctx_mode - channel context configuration mode 673 * 674 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 675 * multiple interfaces 676 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 677 * only by a single interface. This can be used for example for 678 * non-fixed channel IBSS. 679 */ 680 enum ieee80211_chanctx_mode { 681 IEEE80211_CHANCTX_SHARED, 682 IEEE80211_CHANCTX_EXCLUSIVE 683 }; 684 685 struct ieee80211_chanctx { 686 struct list_head list; 687 struct rcu_head rcu_head; 688 689 enum ieee80211_chanctx_mode mode; 690 int refcount; 691 692 struct ieee80211_chanctx_conf conf; 693 }; 694 695 struct ieee80211_sub_if_data { 696 struct list_head list; 697 698 struct wireless_dev wdev; 699 700 /* keys */ 701 struct list_head key_list; 702 703 /* count for keys needing tailroom space allocation */ 704 int crypto_tx_tailroom_needed_cnt; 705 706 struct net_device *dev; 707 struct ieee80211_local *local; 708 709 unsigned int flags; 710 711 unsigned long state; 712 713 int drop_unencrypted; 714 715 char name[IFNAMSIZ]; 716 717 /* to detect idle changes */ 718 bool old_idle; 719 720 /* Fragment table for host-based reassembly */ 721 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 722 unsigned int fragment_next; 723 724 /* TID bitmap for NoAck policy */ 725 u16 noack_map; 726 727 /* bit field of ACM bits (BIT(802.1D tag)) */ 728 u8 wmm_acm; 729 730 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 731 struct ieee80211_key __rcu *default_unicast_key; 732 struct ieee80211_key __rcu *default_multicast_key; 733 struct ieee80211_key __rcu *default_mgmt_key; 734 735 u16 sequence_number; 736 __be16 control_port_protocol; 737 bool control_port_no_encrypt; 738 739 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 740 741 /* used to reconfigure hardware SM PS */ 742 struct work_struct recalc_smps; 743 744 struct work_struct work; 745 struct sk_buff_head skb_queue; 746 747 bool arp_filter_state; 748 749 u8 needed_rx_chains; 750 enum ieee80211_smps_mode smps_mode; 751 752 int user_power_level; /* in dBm */ 753 int ap_power_level; /* in dBm */ 754 755 /* 756 * AP this belongs to: self in AP mode and 757 * corresponding AP in VLAN mode, NULL for 758 * all others (might be needed later in IBSS) 759 */ 760 struct ieee80211_if_ap *bss; 761 762 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 763 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 764 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 765 766 union { 767 struct ieee80211_if_ap ap; 768 struct ieee80211_if_wds wds; 769 struct ieee80211_if_vlan vlan; 770 struct ieee80211_if_managed mgd; 771 struct ieee80211_if_ibss ibss; 772 struct ieee80211_if_mesh mesh; 773 u32 mntr_flags; 774 } u; 775 776 #ifdef CONFIG_MAC80211_DEBUGFS 777 struct { 778 struct dentry *dir; 779 struct dentry *subdir_stations; 780 struct dentry *default_unicast_key; 781 struct dentry *default_multicast_key; 782 struct dentry *default_mgmt_key; 783 } debugfs; 784 #endif 785 /* must be last, dynamically sized area in this! */ 786 struct ieee80211_vif vif; 787 }; 788 789 static inline 790 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 791 { 792 return container_of(p, struct ieee80211_sub_if_data, vif); 793 } 794 795 static inline enum ieee80211_band 796 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) 797 { 798 enum ieee80211_band band = IEEE80211_BAND_2GHZ; 799 struct ieee80211_chanctx_conf *chanctx_conf; 800 801 rcu_read_lock(); 802 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 803 if (!WARN_ON(!chanctx_conf)) 804 band = chanctx_conf->def.chan->band; 805 rcu_read_unlock(); 806 807 return band; 808 } 809 810 enum sdata_queue_type { 811 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 812 IEEE80211_SDATA_QUEUE_AGG_START = 1, 813 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 814 }; 815 816 enum { 817 IEEE80211_RX_MSG = 1, 818 IEEE80211_TX_STATUS_MSG = 2, 819 IEEE80211_EOSP_MSG = 3, 820 }; 821 822 struct skb_eosp_msg_data { 823 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 824 }; 825 826 enum queue_stop_reason { 827 IEEE80211_QUEUE_STOP_REASON_DRIVER, 828 IEEE80211_QUEUE_STOP_REASON_PS, 829 IEEE80211_QUEUE_STOP_REASON_CSA, 830 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 831 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 832 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 833 }; 834 835 #ifdef CONFIG_MAC80211_LEDS 836 struct tpt_led_trigger { 837 struct led_trigger trig; 838 char name[32]; 839 const struct ieee80211_tpt_blink *blink_table; 840 unsigned int blink_table_len; 841 struct timer_list timer; 842 unsigned long prev_traffic; 843 unsigned long tx_bytes, rx_bytes; 844 unsigned int active, want; 845 bool running; 846 }; 847 #endif 848 849 /** 850 * mac80211 scan flags - currently active scan mode 851 * 852 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 853 * well be on the operating channel 854 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 855 * determine if we are on the operating channel or not 856 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 857 * channel. This should not interrupt normal traffic. 858 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 859 * that the scan completed. 860 * @SCAN_ABORTED: Set for our scan work function when the driver reported 861 * a scan complete for an aborted scan. 862 */ 863 enum { 864 SCAN_SW_SCANNING, 865 SCAN_HW_SCANNING, 866 SCAN_ONCHANNEL_SCANNING, 867 SCAN_COMPLETED, 868 SCAN_ABORTED, 869 }; 870 871 /** 872 * enum mac80211_scan_state - scan state machine states 873 * 874 * @SCAN_DECISION: Main entry point to the scan state machine, this state 875 * determines if we should keep on scanning or switch back to the 876 * operating channel 877 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 878 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 879 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 880 * send out data 881 * @SCAN_RESUME: Resume the scan and scan the next channel 882 * @SCAN_ABORT: Abort the scan and go back to operating channel 883 */ 884 enum mac80211_scan_state { 885 SCAN_DECISION, 886 SCAN_SET_CHANNEL, 887 SCAN_SEND_PROBE, 888 SCAN_SUSPEND, 889 SCAN_RESUME, 890 SCAN_ABORT, 891 }; 892 893 struct ieee80211_local { 894 /* embed the driver visible part. 895 * don't cast (use the static inlines below), but we keep 896 * it first anyway so they become a no-op */ 897 struct ieee80211_hw hw; 898 899 const struct ieee80211_ops *ops; 900 901 /* 902 * private workqueue to mac80211. mac80211 makes this accessible 903 * via ieee80211_queue_work() 904 */ 905 struct workqueue_struct *workqueue; 906 907 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 908 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 909 spinlock_t queue_stop_reason_lock; 910 911 int open_count; 912 int monitors, cooked_mntrs; 913 /* number of interfaces with corresponding FIF_ flags */ 914 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 915 fif_probe_req; 916 int probe_req_reg; 917 unsigned int filter_flags; /* FIF_* */ 918 919 bool wiphy_ciphers_allocated; 920 921 bool use_chanctx; 922 923 /* protects the aggregated multicast list and filter calls */ 924 spinlock_t filter_lock; 925 926 /* used for uploading changed mc list */ 927 struct work_struct reconfig_filter; 928 929 /* aggregated multicast list */ 930 struct netdev_hw_addr_list mc_list; 931 932 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 933 934 /* 935 * suspended is true if we finished all the suspend _and_ we have 936 * not yet come up from resume. This is to be used by mac80211 937 * to ensure driver sanity during suspend and mac80211's own 938 * sanity. It can eventually be used for WoW as well. 939 */ 940 bool suspended; 941 942 /* 943 * Resuming is true while suspended, but when we're reprogramming the 944 * hardware -- at that time it's allowed to use ieee80211_queue_work() 945 * again even though some other parts of the stack are still suspended 946 * and we still drop received frames to avoid waking the stack. 947 */ 948 bool resuming; 949 950 /* 951 * quiescing is true during the suspend process _only_ to 952 * ease timer cancelling etc. 953 */ 954 bool quiescing; 955 956 /* device is started */ 957 bool started; 958 959 /* device is during a HW reconfig */ 960 bool in_reconfig; 961 962 /* wowlan is enabled -- don't reconfig on resume */ 963 bool wowlan; 964 965 /* number of RX chains the hardware has */ 966 u8 rx_chains; 967 968 int tx_headroom; /* required headroom for hardware/radiotap */ 969 970 /* Tasklet and skb queue to process calls from IRQ mode. All frames 971 * added to skb_queue will be processed, but frames in 972 * skb_queue_unreliable may be dropped if the total length of these 973 * queues increases over the limit. */ 974 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 975 struct tasklet_struct tasklet; 976 struct sk_buff_head skb_queue; 977 struct sk_buff_head skb_queue_unreliable; 978 979 /* 980 * Internal FIFO queue which is shared between multiple rx path 981 * stages. Its main task is to provide a serialization mechanism, 982 * so all rx handlers can enjoy having exclusive access to their 983 * private data structures. 984 */ 985 struct sk_buff_head rx_skb_queue; 986 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 987 988 /* Station data */ 989 /* 990 * The mutex only protects the list, hash table and 991 * counter, reads are done with RCU. 992 */ 993 struct mutex sta_mtx; 994 spinlock_t tim_lock; 995 unsigned long num_sta; 996 struct list_head sta_list; 997 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 998 struct timer_list sta_cleanup; 999 int sta_generation; 1000 1001 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1002 struct tasklet_struct tx_pending_tasklet; 1003 1004 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1005 1006 /* number of interfaces with corresponding IFF_ flags */ 1007 atomic_t iff_allmultis, iff_promiscs; 1008 1009 struct rate_control_ref *rate_ctrl; 1010 1011 struct crypto_cipher *wep_tx_tfm; 1012 struct crypto_cipher *wep_rx_tfm; 1013 u32 wep_iv; 1014 1015 /* see iface.c */ 1016 struct list_head interfaces; 1017 struct mutex iflist_mtx; 1018 1019 /* 1020 * Key mutex, protects sdata's key_list and sta_info's 1021 * key pointers (write access, they're RCU.) 1022 */ 1023 struct mutex key_mtx; 1024 1025 /* mutex for scan and work locking */ 1026 struct mutex mtx; 1027 1028 /* Scanning and BSS list */ 1029 unsigned long scanning; 1030 struct cfg80211_ssid scan_ssid; 1031 struct cfg80211_scan_request *int_scan_req; 1032 struct cfg80211_scan_request *scan_req, *hw_scan_req; 1033 struct ieee80211_channel *scan_channel; 1034 enum ieee80211_band hw_scan_band; 1035 int scan_channel_idx; 1036 int scan_ies_len; 1037 int hw_scan_ies_bufsize; 1038 1039 struct work_struct sched_scan_stopped_work; 1040 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1041 1042 unsigned long leave_oper_channel_time; 1043 enum mac80211_scan_state next_scan_state; 1044 struct delayed_work scan_work; 1045 struct ieee80211_sub_if_data __rcu *scan_sdata; 1046 struct ieee80211_channel *csa_channel; 1047 /* For backward compatibility only -- do not use */ 1048 struct ieee80211_channel *_oper_channel; 1049 enum nl80211_channel_type _oper_channel_type; 1050 1051 /* Temporary remain-on-channel for off-channel operations */ 1052 struct ieee80211_channel *tmp_channel; 1053 1054 /* channel contexts */ 1055 struct list_head chanctx_list; 1056 struct mutex chanctx_mtx; 1057 1058 /* SNMP counters */ 1059 /* dot11CountersTable */ 1060 u32 dot11TransmittedFragmentCount; 1061 u32 dot11MulticastTransmittedFrameCount; 1062 u32 dot11FailedCount; 1063 u32 dot11RetryCount; 1064 u32 dot11MultipleRetryCount; 1065 u32 dot11FrameDuplicateCount; 1066 u32 dot11ReceivedFragmentCount; 1067 u32 dot11MulticastReceivedFrameCount; 1068 u32 dot11TransmittedFrameCount; 1069 1070 #ifdef CONFIG_MAC80211_LEDS 1071 int tx_led_counter, rx_led_counter; 1072 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1073 struct tpt_led_trigger *tpt_led_trigger; 1074 char tx_led_name[32], rx_led_name[32], 1075 assoc_led_name[32], radio_led_name[32]; 1076 #endif 1077 1078 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1079 /* TX/RX handler statistics */ 1080 unsigned int tx_handlers_drop; 1081 unsigned int tx_handlers_queued; 1082 unsigned int tx_handlers_drop_unencrypted; 1083 unsigned int tx_handlers_drop_fragment; 1084 unsigned int tx_handlers_drop_wep; 1085 unsigned int tx_handlers_drop_not_assoc; 1086 unsigned int tx_handlers_drop_unauth_port; 1087 unsigned int rx_handlers_drop; 1088 unsigned int rx_handlers_queued; 1089 unsigned int rx_handlers_drop_nullfunc; 1090 unsigned int rx_handlers_drop_defrag; 1091 unsigned int rx_handlers_drop_short; 1092 unsigned int tx_expand_skb_head; 1093 unsigned int tx_expand_skb_head_cloned; 1094 unsigned int rx_expand_skb_head; 1095 unsigned int rx_expand_skb_head2; 1096 unsigned int rx_handlers_fragments; 1097 unsigned int tx_status_drop; 1098 #define I802_DEBUG_INC(c) (c)++ 1099 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1100 #define I802_DEBUG_INC(c) do { } while (0) 1101 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1102 1103 1104 int total_ps_buffered; /* total number of all buffered unicast and 1105 * multicast packets for power saving stations 1106 */ 1107 1108 bool pspolling; 1109 bool offchannel_ps_enabled; 1110 /* 1111 * PS can only be enabled when we have exactly one managed 1112 * interface (and monitors) in PS, this then points there. 1113 */ 1114 struct ieee80211_sub_if_data *ps_sdata; 1115 struct work_struct dynamic_ps_enable_work; 1116 struct work_struct dynamic_ps_disable_work; 1117 struct timer_list dynamic_ps_timer; 1118 struct notifier_block network_latency_notifier; 1119 struct notifier_block ifa_notifier; 1120 1121 /* 1122 * The dynamic ps timeout configured from user space via WEXT - 1123 * this will override whatever chosen by mac80211 internally. 1124 */ 1125 int dynamic_ps_forced_timeout; 1126 int dynamic_ps_user_timeout; 1127 bool disable_dynamic_ps; 1128 1129 int user_power_level; /* in dBm, for all interfaces */ 1130 1131 enum ieee80211_smps_mode smps_mode; 1132 1133 struct work_struct restart_work; 1134 1135 #ifdef CONFIG_MAC80211_DEBUGFS 1136 struct local_debugfsdentries { 1137 struct dentry *rcdir; 1138 struct dentry *keys; 1139 } debugfs; 1140 #endif 1141 1142 /* 1143 * Remain-on-channel support 1144 */ 1145 struct list_head roc_list; 1146 struct work_struct hw_roc_start, hw_roc_done; 1147 unsigned long hw_roc_start_time; 1148 u64 roc_cookie_counter; 1149 1150 struct idr ack_status_frames; 1151 spinlock_t ack_status_lock; 1152 1153 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1154 1155 /* dummy netdev for use w/ NAPI */ 1156 struct net_device napi_dev; 1157 1158 struct napi_struct napi; 1159 1160 /* virtual monitor interface */ 1161 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1162 struct cfg80211_chan_def monitor_chandef; 1163 }; 1164 1165 static inline struct ieee80211_sub_if_data * 1166 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1167 { 1168 return netdev_priv(dev); 1169 } 1170 1171 static inline struct ieee80211_sub_if_data * 1172 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1173 { 1174 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1175 } 1176 1177 /* this struct represents 802.11n's RA/TID combination */ 1178 struct ieee80211_ra_tid { 1179 u8 ra[ETH_ALEN]; 1180 u16 tid; 1181 }; 1182 1183 /* Parsed Information Elements */ 1184 struct ieee802_11_elems { 1185 u8 *ie_start; 1186 size_t total_len; 1187 1188 /* pointers to IEs */ 1189 u8 *ssid; 1190 u8 *supp_rates; 1191 u8 *fh_params; 1192 u8 *ds_params; 1193 u8 *cf_params; 1194 struct ieee80211_tim_ie *tim; 1195 u8 *ibss_params; 1196 u8 *challenge; 1197 u8 *wpa; 1198 u8 *rsn; 1199 u8 *erp_info; 1200 u8 *ext_supp_rates; 1201 u8 *wmm_info; 1202 u8 *wmm_param; 1203 struct ieee80211_ht_cap *ht_cap_elem; 1204 struct ieee80211_ht_operation *ht_operation; 1205 struct ieee80211_vht_cap *vht_cap_elem; 1206 struct ieee80211_vht_operation *vht_operation; 1207 struct ieee80211_meshconf_ie *mesh_config; 1208 u8 *mesh_id; 1209 u8 *peering; 1210 u8 *preq; 1211 u8 *prep; 1212 u8 *perr; 1213 struct ieee80211_rann_ie *rann; 1214 struct ieee80211_channel_sw_ie *ch_switch_ie; 1215 u8 *country_elem; 1216 u8 *pwr_constr_elem; 1217 u8 *quiet_elem; /* first quite element */ 1218 u8 *timeout_int; 1219 1220 /* length of them, respectively */ 1221 u8 ssid_len; 1222 u8 supp_rates_len; 1223 u8 fh_params_len; 1224 u8 ds_params_len; 1225 u8 cf_params_len; 1226 u8 tim_len; 1227 u8 ibss_params_len; 1228 u8 challenge_len; 1229 u8 wpa_len; 1230 u8 rsn_len; 1231 u8 erp_info_len; 1232 u8 ext_supp_rates_len; 1233 u8 wmm_info_len; 1234 u8 wmm_param_len; 1235 u8 mesh_id_len; 1236 u8 peering_len; 1237 u8 preq_len; 1238 u8 prep_len; 1239 u8 perr_len; 1240 u8 country_elem_len; 1241 u8 quiet_elem_len; 1242 u8 num_of_quiet_elem; /* can be more the one */ 1243 u8 timeout_int_len; 1244 1245 /* whether a parse error occurred while retrieving these elements */ 1246 bool parse_error; 1247 }; 1248 1249 static inline struct ieee80211_local *hw_to_local( 1250 struct ieee80211_hw *hw) 1251 { 1252 return container_of(hw, struct ieee80211_local, hw); 1253 } 1254 1255 1256 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1257 { 1258 return ether_addr_equal(raddr, addr) || 1259 is_broadcast_ether_addr(raddr); 1260 } 1261 1262 static inline bool 1263 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1264 { 1265 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1266 status->flag & RX_FLAG_MACTIME_END); 1267 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END); 1268 } 1269 1270 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1271 struct ieee80211_rx_status *status, 1272 unsigned int mpdu_len, 1273 unsigned int mpdu_offset); 1274 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1275 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1276 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1277 u32 changed); 1278 void ieee80211_configure_filter(struct ieee80211_local *local); 1279 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1280 1281 /* STA code */ 1282 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1283 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1284 struct cfg80211_auth_request *req); 1285 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1286 struct cfg80211_assoc_request *req); 1287 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1288 struct cfg80211_deauth_request *req); 1289 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1290 struct cfg80211_disassoc_request *req); 1291 void ieee80211_send_pspoll(struct ieee80211_local *local, 1292 struct ieee80211_sub_if_data *sdata); 1293 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1294 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1295 int ieee80211_max_network_latency(struct notifier_block *nb, 1296 unsigned long data, void *dummy); 1297 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1298 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1299 struct ieee80211_channel_sw_ie *sw_elem, 1300 struct ieee80211_bss *bss, 1301 u64 timestamp); 1302 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1303 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1304 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1305 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1306 struct sk_buff *skb); 1307 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1308 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1309 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1310 1311 /* IBSS code */ 1312 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1313 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1314 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1315 const u8 *bssid, const u8 *addr, u32 supp_rates); 1316 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1317 struct cfg80211_ibss_params *params); 1318 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1319 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1320 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1321 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1322 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1323 struct sk_buff *skb); 1324 1325 /* mesh code */ 1326 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1327 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1328 struct sk_buff *skb); 1329 1330 /* scan/BSS handling */ 1331 void ieee80211_scan_work(struct work_struct *work); 1332 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1333 const u8 *ssid, u8 ssid_len, 1334 struct ieee80211_channel *chan); 1335 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1336 struct cfg80211_scan_request *req); 1337 void ieee80211_scan_cancel(struct ieee80211_local *local); 1338 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1339 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1340 1341 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1342 struct ieee80211_bss * 1343 ieee80211_bss_info_update(struct ieee80211_local *local, 1344 struct ieee80211_rx_status *rx_status, 1345 struct ieee80211_mgmt *mgmt, 1346 size_t len, 1347 struct ieee802_11_elems *elems, 1348 struct ieee80211_channel *channel, 1349 bool beacon); 1350 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1351 struct ieee80211_bss *bss); 1352 1353 /* scheduled scan handling */ 1354 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1355 struct cfg80211_sched_scan_request *req); 1356 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1357 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1358 1359 /* off-channel helpers */ 1360 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1361 bool offchannel_ps_enable); 1362 void ieee80211_offchannel_return(struct ieee80211_local *local, 1363 bool offchannel_ps_disable); 1364 void ieee80211_roc_setup(struct ieee80211_local *local); 1365 void ieee80211_start_next_roc(struct ieee80211_local *local); 1366 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata); 1367 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc); 1368 void ieee80211_sw_roc_work(struct work_struct *work); 1369 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1370 1371 /* interface handling */ 1372 int ieee80211_iface_init(void); 1373 void ieee80211_iface_exit(void); 1374 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1375 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1376 struct vif_params *params); 1377 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1378 enum nl80211_iftype type); 1379 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1380 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1381 void ieee80211_recalc_idle(struct ieee80211_local *local); 1382 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1383 const int offset); 1384 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1385 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1386 1387 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1388 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1389 1390 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1391 { 1392 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1393 } 1394 1395 /* tx handling */ 1396 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1397 void ieee80211_tx_pending(unsigned long data); 1398 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1399 struct net_device *dev); 1400 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1401 struct net_device *dev); 1402 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1403 struct sk_buff_head *skbs); 1404 1405 /* HT */ 1406 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1407 struct ieee80211_sta_ht_cap *ht_cap); 1408 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1409 struct ieee80211_supported_band *sband, 1410 struct ieee80211_ht_cap *ht_cap_ie, 1411 struct ieee80211_sta_ht_cap *ht_cap); 1412 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1413 const u8 *da, u16 tid, 1414 u16 initiator, u16 reason_code); 1415 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1416 enum ieee80211_smps_mode smps, const u8 *da, 1417 const u8 *bssid); 1418 void ieee80211_request_smps_work(struct work_struct *work); 1419 1420 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1421 u16 initiator, u16 reason, bool stop); 1422 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1423 u16 initiator, u16 reason, bool stop); 1424 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1425 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1426 struct sta_info *sta, 1427 struct ieee80211_mgmt *mgmt, size_t len); 1428 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1429 struct sta_info *sta, 1430 struct ieee80211_mgmt *mgmt, 1431 size_t len); 1432 void ieee80211_process_addba_request(struct ieee80211_local *local, 1433 struct sta_info *sta, 1434 struct ieee80211_mgmt *mgmt, 1435 size_t len); 1436 1437 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1438 enum ieee80211_back_parties initiator, 1439 bool tx); 1440 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1441 enum ieee80211_back_parties initiator, 1442 bool tx); 1443 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1444 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1445 void ieee80211_ba_session_work(struct work_struct *work); 1446 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1447 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1448 1449 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1450 1451 /* VHT */ 1452 void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1453 struct ieee80211_supported_band *sband, 1454 struct ieee80211_vht_cap *vht_cap_ie, 1455 struct ieee80211_sta_vht_cap *vht_cap); 1456 /* Spectrum management */ 1457 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1458 struct ieee80211_mgmt *mgmt, 1459 size_t len); 1460 1461 /* Suspend/resume and hw reconfiguration */ 1462 int ieee80211_reconfig(struct ieee80211_local *local); 1463 void ieee80211_stop_device(struct ieee80211_local *local); 1464 1465 int __ieee80211_suspend(struct ieee80211_hw *hw, 1466 struct cfg80211_wowlan *wowlan); 1467 1468 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1469 { 1470 struct ieee80211_local *local = hw_to_local(hw); 1471 1472 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1473 "%s: resume with hardware scan still in progress\n", 1474 wiphy_name(hw->wiphy)); 1475 1476 return ieee80211_reconfig(hw_to_local(hw)); 1477 } 1478 1479 /* utility functions/constants */ 1480 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1481 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1482 enum nl80211_iftype type); 1483 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1484 int rate, int erp, int short_preamble); 1485 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1486 struct ieee80211_hdr *hdr, const u8 *tsc, 1487 gfp_t gfp); 1488 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1489 bool bss_notify); 1490 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1491 enum ieee80211_band band); 1492 1493 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1494 struct sk_buff *skb, int tid, 1495 enum ieee80211_band band); 1496 1497 static inline void 1498 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1499 struct sk_buff *skb, int tid, 1500 enum ieee80211_band band) 1501 { 1502 rcu_read_lock(); 1503 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); 1504 rcu_read_unlock(); 1505 } 1506 1507 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1508 struct sk_buff *skb, int tid) 1509 { 1510 struct ieee80211_chanctx_conf *chanctx_conf; 1511 1512 rcu_read_lock(); 1513 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1514 if (WARN_ON(!chanctx_conf)) { 1515 rcu_read_unlock(); 1516 kfree_skb(skb); 1517 return; 1518 } 1519 1520 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1521 chanctx_conf->def.chan->band); 1522 rcu_read_unlock(); 1523 } 1524 1525 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1526 struct sk_buff *skb) 1527 { 1528 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1529 ieee80211_tx_skb_tid(sdata, skb, 7); 1530 } 1531 1532 void ieee802_11_parse_elems(u8 *start, size_t len, 1533 struct ieee802_11_elems *elems); 1534 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1535 struct ieee802_11_elems *elems, 1536 u64 filter, u32 crc); 1537 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1538 enum ieee80211_band band); 1539 1540 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1541 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1542 void ieee80211_dynamic_ps_timer(unsigned long data); 1543 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1544 struct ieee80211_sub_if_data *sdata, 1545 int powersave); 1546 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1547 struct ieee80211_hdr *hdr); 1548 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1549 struct ieee80211_hdr *hdr, bool ack); 1550 1551 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1552 enum queue_stop_reason reason); 1553 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1554 enum queue_stop_reason reason); 1555 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1556 enum queue_stop_reason reason); 1557 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1558 enum queue_stop_reason reason); 1559 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1560 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1561 struct sk_buff *skb); 1562 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1563 struct sk_buff_head *skbs, 1564 void (*fn)(void *data), void *data); 1565 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1566 struct sk_buff_head *skbs) 1567 { 1568 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1569 } 1570 1571 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1572 u16 transaction, u16 auth_alg, u16 status, 1573 u8 *extra, size_t extra_len, const u8 *bssid, 1574 const u8 *da, const u8 *key, u8 key_len, u8 key_idx); 1575 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1576 const u8 *bssid, u16 stype, u16 reason, 1577 bool send_frame, u8 *frame_buf); 1578 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1579 size_t buffer_len, const u8 *ie, size_t ie_len, 1580 enum ieee80211_band band, u32 rate_mask, 1581 u8 channel); 1582 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1583 u8 *dst, u32 ratemask, 1584 struct ieee80211_channel *chan, 1585 const u8 *ssid, size_t ssid_len, 1586 const u8 *ie, size_t ie_len, 1587 bool directed); 1588 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1589 const u8 *ssid, size_t ssid_len, 1590 const u8 *ie, size_t ie_len, 1591 u32 ratemask, bool directed, bool no_cck, 1592 struct ieee80211_channel *channel, bool scan); 1593 1594 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1595 const size_t supp_rates_len, 1596 const u8 *supp_rates); 1597 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1598 struct ieee802_11_elems *elems, 1599 enum ieee80211_band band, u32 *basic_rates); 1600 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1601 enum ieee80211_smps_mode smps_mode); 1602 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 1603 1604 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1605 const u8 *ids, int n_ids, size_t offset); 1606 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1607 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1608 u16 cap); 1609 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1610 const struct cfg80211_chan_def *chandef, 1611 u16 prot_mode); 1612 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1613 u32 cap); 1614 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1615 struct sk_buff *skb, bool need_basic, 1616 enum ieee80211_band band); 1617 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1618 struct sk_buff *skb, bool need_basic, 1619 enum ieee80211_band band); 1620 1621 /* channel management */ 1622 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, 1623 struct ieee80211_ht_operation *ht_oper, 1624 struct cfg80211_chan_def *chandef); 1625 1626 int __must_check 1627 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 1628 const struct cfg80211_chan_def *chandef, 1629 enum ieee80211_chanctx_mode mode); 1630 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 1631 1632 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 1633 struct ieee80211_chanctx *chanctx); 1634 1635 #ifdef CONFIG_MAC80211_NOINLINE 1636 #define debug_noinline noinline 1637 #else 1638 #define debug_noinline 1639 #endif 1640 1641 #endif /* IEEE80211_I_H */ 1642