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 /* 60 * Some APs experience problems when working with U-APSD. Decrease the 61 * probability of that happening by using legacy mode for all ACs but VO. 62 * The AP that caused us trouble was a Cisco 4410N. It ignores our 63 * setting, and always treats non-VO ACs as legacy. 64 */ 65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO 67 68 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 70 71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 72 73 struct ieee80211_fragment_entry { 74 unsigned long first_frag_time; 75 unsigned int seq; 76 unsigned int rx_queue; 77 unsigned int last_frag; 78 unsigned int extra_len; 79 struct sk_buff_head skb_list; 80 int ccmp; /* Whether fragments were encrypted with CCMP */ 81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 82 }; 83 84 85 struct ieee80211_bss { 86 /* don't want to look up all the time */ 87 size_t ssid_len; 88 u8 ssid[IEEE80211_MAX_SSID_LEN]; 89 90 u32 device_ts; 91 92 u8 dtim_period; 93 94 bool wmm_used; 95 bool uapsd_supported; 96 97 unsigned long last_probe_resp; 98 99 #ifdef CONFIG_MAC80211_MESH 100 u8 *mesh_id; 101 size_t mesh_id_len; 102 u8 *mesh_cfg; 103 #endif 104 105 #define IEEE80211_MAX_SUPP_RATES 32 106 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 107 size_t supp_rates_len; 108 109 /* 110 * During association, we save an ERP value from a probe response so 111 * that we can feed ERP info to the driver when handling the 112 * association completes. these fields probably won't be up-to-date 113 * otherwise, you probably don't want to use them. 114 */ 115 bool has_erp_value; 116 u8 erp_value; 117 118 /* Keep track of the corruption of the last beacon/probe response. */ 119 u8 corrupt_data; 120 121 /* Keep track of what bits of information we have valid info for. */ 122 u8 valid_data; 123 }; 124 125 /** 126 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 127 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 128 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 129 * 130 * These are bss flags that are attached to a bss in the 131 * @corrupt_data field of &struct ieee80211_bss. 132 */ 133 enum ieee80211_bss_corrupt_data_flags { 134 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 135 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 136 }; 137 138 /** 139 * enum ieee80211_valid_data_flags - BSS valid data flags 140 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 142 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 143 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 144 * 145 * These are bss flags that are attached to a bss in the 146 * @valid_data field of &struct ieee80211_bss. They show which parts 147 * of the data structure were recieved as a result of an un-corrupted 148 * beacon/probe response. 149 */ 150 enum ieee80211_bss_valid_data_flags { 151 IEEE80211_BSS_VALID_DTIM = BIT(0), 152 IEEE80211_BSS_VALID_WMM = BIT(1), 153 IEEE80211_BSS_VALID_RATES = BIT(2), 154 IEEE80211_BSS_VALID_ERP = BIT(3) 155 }; 156 157 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 158 { 159 #ifdef CONFIG_MAC80211_MESH 160 return bss->mesh_cfg; 161 #endif 162 return NULL; 163 } 164 165 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 166 { 167 #ifdef CONFIG_MAC80211_MESH 168 return bss->mesh_id; 169 #endif 170 return NULL; 171 } 172 173 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 174 { 175 #ifdef CONFIG_MAC80211_MESH 176 return bss->mesh_id_len; 177 #endif 178 return 0; 179 } 180 181 182 typedef unsigned __bitwise__ ieee80211_tx_result; 183 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 184 #define TX_DROP ((__force ieee80211_tx_result) 1u) 185 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 186 187 #define IEEE80211_TX_UNICAST BIT(1) 188 #define IEEE80211_TX_PS_BUFFERED BIT(2) 189 190 struct ieee80211_tx_data { 191 struct sk_buff *skb; 192 struct sk_buff_head skbs; 193 struct ieee80211_local *local; 194 struct ieee80211_sub_if_data *sdata; 195 struct sta_info *sta; 196 struct ieee80211_key *key; 197 198 unsigned int flags; 199 }; 200 201 202 typedef unsigned __bitwise__ ieee80211_rx_result; 203 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 204 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 205 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 206 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 207 208 /** 209 * enum ieee80211_packet_rx_flags - packet RX flags 210 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 211 * (incl. multicast frames) 212 * @IEEE80211_RX_FRAGMENTED: fragmented frame 213 * @IEEE80211_RX_AMSDU: a-MSDU packet 214 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 215 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 216 * 217 * These are per-frame flags that are attached to a frame in the 218 * @rx_flags field of &struct ieee80211_rx_status. 219 */ 220 enum ieee80211_packet_rx_flags { 221 IEEE80211_RX_RA_MATCH = BIT(1), 222 IEEE80211_RX_FRAGMENTED = BIT(2), 223 IEEE80211_RX_AMSDU = BIT(3), 224 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 225 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 226 }; 227 228 /** 229 * enum ieee80211_rx_flags - RX data flags 230 * 231 * @IEEE80211_RX_CMNTR: received on cooked monitor already 232 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 233 * to cfg80211_report_obss_beacon(). 234 * 235 * These flags are used across handling multiple interfaces 236 * for a single frame. 237 */ 238 enum ieee80211_rx_flags { 239 IEEE80211_RX_CMNTR = BIT(0), 240 IEEE80211_RX_BEACON_REPORTED = BIT(1), 241 }; 242 243 struct ieee80211_rx_data { 244 struct sk_buff *skb; 245 struct ieee80211_local *local; 246 struct ieee80211_sub_if_data *sdata; 247 struct sta_info *sta; 248 struct ieee80211_key *key; 249 250 unsigned int flags; 251 252 /* 253 * Index into sequence numbers array, 0..16 254 * since the last (16) is used for non-QoS, 255 * will be 16 on non-QoS frames. 256 */ 257 int seqno_idx; 258 259 /* 260 * Index into the security IV/PN arrays, 0..16 261 * since the last (16) is used for CCMP-encrypted 262 * management frames, will be set to 16 on mgmt 263 * frames and 0 on non-QoS frames. 264 */ 265 int security_idx; 266 267 u32 tkip_iv32; 268 u16 tkip_iv16; 269 }; 270 271 struct beacon_data { 272 u8 *head, *tail; 273 int head_len, tail_len; 274 struct rcu_head rcu_head; 275 }; 276 277 struct probe_resp { 278 struct rcu_head rcu_head; 279 int len; 280 u8 data[0]; 281 }; 282 283 struct ieee80211_if_ap { 284 struct beacon_data __rcu *beacon; 285 struct probe_resp __rcu *probe_resp; 286 287 struct list_head vlans; 288 289 /* yes, this looks ugly, but guarantees that we can later use 290 * bitmap_empty :) 291 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 292 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 293 struct sk_buff_head ps_bc_buf; 294 atomic_t num_sta_ps; /* number of stations in PS mode */ 295 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 296 int dtim_count; 297 bool dtim_bc_mc; 298 }; 299 300 struct ieee80211_if_wds { 301 struct sta_info *sta; 302 u8 remote_addr[ETH_ALEN]; 303 }; 304 305 struct ieee80211_if_vlan { 306 struct list_head list; 307 308 /* used for all tx if the VLAN is configured to 4-addr mode */ 309 struct sta_info __rcu *sta; 310 }; 311 312 struct mesh_stats { 313 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 314 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 315 __u32 fwded_frames; /* Mesh total forwarded frames */ 316 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 317 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 318 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 319 atomic_t estab_plinks; 320 }; 321 322 #define PREQ_Q_F_START 0x1 323 #define PREQ_Q_F_REFRESH 0x2 324 struct mesh_preq_queue { 325 struct list_head list; 326 u8 dst[ETH_ALEN]; 327 u8 flags; 328 }; 329 330 #if HZ/100 == 0 331 #define IEEE80211_ROC_MIN_LEFT 1 332 #else 333 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 334 #endif 335 336 struct ieee80211_roc_work { 337 struct list_head list; 338 struct list_head dependents; 339 340 struct delayed_work work; 341 342 struct ieee80211_sub_if_data *sdata; 343 344 struct ieee80211_channel *chan; 345 enum nl80211_channel_type chan_type; 346 347 bool started, abort, hw_begun, notified; 348 349 unsigned long hw_start_time; 350 351 u32 duration, req_duration; 352 struct sk_buff *frame; 353 u64 mgmt_tx_cookie; 354 }; 355 356 /* flags used in struct ieee80211_if_managed.flags */ 357 enum ieee80211_sta_flags { 358 IEEE80211_STA_BEACON_POLL = BIT(0), 359 IEEE80211_STA_CONNECTION_POLL = BIT(1), 360 IEEE80211_STA_CONTROL_PORT = BIT(2), 361 IEEE80211_STA_DISABLE_11N = BIT(4), 362 IEEE80211_STA_CSA_RECEIVED = BIT(5), 363 IEEE80211_STA_MFP_ENABLED = BIT(6), 364 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 365 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 366 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 367 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 368 IEEE80211_STA_DISABLE_VHT = BIT(11), 369 }; 370 371 struct ieee80211_mgd_auth_data { 372 struct cfg80211_bss *bss; 373 unsigned long timeout; 374 int tries; 375 u16 algorithm, expected_transaction; 376 377 u8 key[WLAN_KEY_LEN_WEP104]; 378 u8 key_len, key_idx; 379 bool done; 380 381 size_t ie_len; 382 u8 ie[]; 383 }; 384 385 struct ieee80211_mgd_assoc_data { 386 struct cfg80211_bss *bss; 387 const u8 *supp_rates; 388 389 unsigned long timeout; 390 int tries; 391 392 u16 capability; 393 u8 prev_bssid[ETH_ALEN]; 394 u8 ssid[IEEE80211_MAX_SSID_LEN]; 395 u8 ssid_len; 396 u8 supp_rates_len; 397 bool wmm, uapsd; 398 bool have_beacon; 399 bool sent_assoc; 400 bool synced; 401 402 u8 ap_ht_param; 403 404 size_t ie_len; 405 u8 ie[]; 406 }; 407 408 struct ieee80211_if_managed { 409 struct timer_list timer; 410 struct timer_list conn_mon_timer; 411 struct timer_list bcn_mon_timer; 412 struct timer_list chswitch_timer; 413 struct work_struct monitor_work; 414 struct work_struct chswitch_work; 415 struct work_struct beacon_connection_loss_work; 416 struct work_struct csa_connection_drop_work; 417 418 unsigned long beacon_timeout; 419 unsigned long probe_timeout; 420 int probe_send_count; 421 bool nullfunc_failed; 422 423 struct mutex mtx; 424 struct cfg80211_bss *associated; 425 struct ieee80211_mgd_auth_data *auth_data; 426 struct ieee80211_mgd_assoc_data *assoc_data; 427 428 u8 bssid[ETH_ALEN]; 429 430 u16 aid; 431 432 unsigned long timers_running; /* used for quiesce/restart */ 433 bool powersave; /* powersave requested for this iface */ 434 bool broken_ap; /* AP is broken -- turn off powersave */ 435 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 436 ap_smps, /* smps mode AP thinks we're in */ 437 driver_smps_mode; /* smps mode request */ 438 439 struct work_struct request_smps_work; 440 441 unsigned int flags; 442 443 bool beacon_crc_valid; 444 u32 beacon_crc; 445 446 enum { 447 IEEE80211_MFP_DISABLED, 448 IEEE80211_MFP_OPTIONAL, 449 IEEE80211_MFP_REQUIRED 450 } mfp; /* management frame protection */ 451 452 /* 453 * Bitmask of enabled u-apsd queues, 454 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 455 * to take effect. 456 */ 457 unsigned int uapsd_queues; 458 459 /* 460 * Maximum number of buffered frames AP can deliver during a 461 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 462 * Needs a new association to take effect. 463 */ 464 unsigned int uapsd_max_sp_len; 465 466 int wmm_last_param_set; 467 468 u8 use_4addr; 469 470 /* Signal strength from the last Beacon frame in the current BSS. */ 471 int last_beacon_signal; 472 473 /* 474 * Weighted average of the signal strength from Beacon frames in the 475 * current BSS. This is in units of 1/16 of the signal unit to maintain 476 * accuracy and to speed up calculations, i.e., the value need to be 477 * divided by 16 to get the actual value. 478 */ 479 int ave_beacon_signal; 480 481 /* 482 * Number of Beacon frames used in ave_beacon_signal. This can be used 483 * to avoid generating less reliable cqm events that would be based 484 * only on couple of received frames. 485 */ 486 unsigned int count_beacon_signal; 487 488 /* 489 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 490 * that triggered a cqm event. 0 indicates that no event has been 491 * generated for the current association. 492 */ 493 int last_cqm_event_signal; 494 495 /* 496 * State variables for keeping track of RSSI of the AP currently 497 * connected to and informing driver when RSSI has gone 498 * below/above a certain threshold. 499 */ 500 int rssi_min_thold, rssi_max_thold; 501 int last_ave_beacon_signal; 502 503 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 504 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 505 }; 506 507 struct ieee80211_if_ibss { 508 struct timer_list timer; 509 510 struct mutex mtx; 511 512 unsigned long last_scan_completed; 513 514 u32 basic_rates; 515 516 bool timer_running; 517 518 bool fixed_bssid; 519 bool fixed_channel; 520 bool privacy; 521 522 bool control_port; 523 unsigned int auth_frame_registrations; 524 525 u8 bssid[ETH_ALEN] __aligned(2); 526 u8 ssid[IEEE80211_MAX_SSID_LEN]; 527 u8 ssid_len, ie_len; 528 u8 *ie; 529 struct ieee80211_channel *channel; 530 enum nl80211_channel_type channel_type; 531 532 unsigned long ibss_join_req; 533 /* probe response/beacon for IBSS */ 534 struct sk_buff __rcu *presp; 535 struct sk_buff *skb; 536 537 spinlock_t incomplete_lock; 538 struct list_head incomplete_stations; 539 540 enum { 541 IEEE80211_IBSS_MLME_SEARCH, 542 IEEE80211_IBSS_MLME_JOINED, 543 } state; 544 }; 545 546 /** 547 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 548 * 549 * these declarations define the interface, which enables 550 * vendor-specific mesh synchronization 551 * 552 */ 553 struct ieee802_11_elems; 554 struct ieee80211_mesh_sync_ops { 555 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 556 u16 stype, 557 struct ieee80211_mgmt *mgmt, 558 struct ieee802_11_elems *elems, 559 struct ieee80211_rx_status *rx_status); 560 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 561 /* add other framework functions here */ 562 }; 563 564 struct ieee80211_if_mesh { 565 struct timer_list housekeeping_timer; 566 struct timer_list mesh_path_timer; 567 struct timer_list mesh_path_root_timer; 568 569 unsigned long timers_running; 570 571 unsigned long wrkq_flags; 572 573 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 574 size_t mesh_id_len; 575 /* Active Path Selection Protocol Identifier */ 576 u8 mesh_pp_id; 577 /* Active Path Selection Metric Identifier */ 578 u8 mesh_pm_id; 579 /* Congestion Control Mode Identifier */ 580 u8 mesh_cc_id; 581 /* Synchronization Protocol Identifier */ 582 u8 mesh_sp_id; 583 /* Authentication Protocol Identifier */ 584 u8 mesh_auth_id; 585 /* Local mesh Sequence Number */ 586 u32 sn; 587 /* Last used PREQ ID */ 588 u32 preq_id; 589 atomic_t mpaths; 590 /* Timestamp of last SN update */ 591 unsigned long last_sn_update; 592 /* Time when it's ok to send next PERR */ 593 unsigned long next_perr; 594 /* Timestamp of last PREQ sent */ 595 unsigned long last_preq; 596 struct mesh_rmc *rmc; 597 spinlock_t mesh_preq_queue_lock; 598 struct mesh_preq_queue preq_queue; 599 int preq_queue_len; 600 struct mesh_stats mshstats; 601 struct mesh_config mshcfg; 602 u32 mesh_seqnum; 603 bool accepting_plinks; 604 int num_gates; 605 const u8 *ie; 606 u8 ie_len; 607 enum { 608 IEEE80211_MESH_SEC_NONE = 0x0, 609 IEEE80211_MESH_SEC_AUTHED = 0x1, 610 IEEE80211_MESH_SEC_SECURED = 0x2, 611 } security; 612 /* Extensible Synchronization Framework */ 613 struct ieee80211_mesh_sync_ops *sync_ops; 614 s64 sync_offset_clockdrift_max; 615 spinlock_t sync_offset_lock; 616 bool adjusting_tbtt; 617 }; 618 619 #ifdef CONFIG_MAC80211_MESH 620 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 621 do { (msh)->mshstats.name++; } while (0) 622 #else 623 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 624 do { } while (0) 625 #endif 626 627 /** 628 * enum ieee80211_sub_if_data_flags - virtual interface flags 629 * 630 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 631 * @IEEE80211_SDATA_PROMISC: interface is promisc 632 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 633 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 634 * associated stations and deliver multicast frames both 635 * back to wireless media and to the local net stack. 636 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 637 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 638 */ 639 enum ieee80211_sub_if_data_flags { 640 IEEE80211_SDATA_ALLMULTI = BIT(0), 641 IEEE80211_SDATA_PROMISC = BIT(1), 642 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 643 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 644 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 645 IEEE80211_SDATA_IN_DRIVER = BIT(5), 646 }; 647 648 /** 649 * enum ieee80211_sdata_state_bits - virtual interface state bits 650 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 651 * mirrors netif_running() but is separate for interface type 652 * change handling while the interface is up 653 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 654 * mode, so queues are stopped 655 */ 656 enum ieee80211_sdata_state_bits { 657 SDATA_STATE_RUNNING, 658 SDATA_STATE_OFFCHANNEL, 659 }; 660 661 struct ieee80211_sub_if_data { 662 struct list_head list; 663 664 struct wireless_dev wdev; 665 666 /* keys */ 667 struct list_head key_list; 668 669 /* count for keys needing tailroom space allocation */ 670 int crypto_tx_tailroom_needed_cnt; 671 672 struct net_device *dev; 673 struct ieee80211_local *local; 674 675 unsigned int flags; 676 677 unsigned long state; 678 679 int drop_unencrypted; 680 681 char name[IFNAMSIZ]; 682 683 /* to detect idle changes */ 684 bool old_idle; 685 686 /* Fragment table for host-based reassembly */ 687 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 688 unsigned int fragment_next; 689 690 /* TID bitmap for NoAck policy */ 691 u16 noack_map; 692 693 /* bit field of ACM bits (BIT(802.1D tag)) */ 694 u8 wmm_acm; 695 696 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 697 struct ieee80211_key __rcu *default_unicast_key; 698 struct ieee80211_key __rcu *default_multicast_key; 699 struct ieee80211_key __rcu *default_mgmt_key; 700 701 u16 sequence_number; 702 __be16 control_port_protocol; 703 bool control_port_no_encrypt; 704 705 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 706 707 struct work_struct work; 708 struct sk_buff_head skb_queue; 709 710 bool arp_filter_state; 711 712 /* 713 * AP this belongs to: self in AP mode and 714 * corresponding AP in VLAN mode, NULL for 715 * all others (might be needed later in IBSS) 716 */ 717 struct ieee80211_if_ap *bss; 718 719 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 720 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 721 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 722 723 union { 724 struct ieee80211_if_ap ap; 725 struct ieee80211_if_wds wds; 726 struct ieee80211_if_vlan vlan; 727 struct ieee80211_if_managed mgd; 728 struct ieee80211_if_ibss ibss; 729 struct ieee80211_if_mesh mesh; 730 u32 mntr_flags; 731 } u; 732 733 #ifdef CONFIG_MAC80211_DEBUGFS 734 struct { 735 struct dentry *dir; 736 struct dentry *subdir_stations; 737 struct dentry *default_unicast_key; 738 struct dentry *default_multicast_key; 739 struct dentry *default_mgmt_key; 740 } debugfs; 741 #endif 742 /* must be last, dynamically sized area in this! */ 743 struct ieee80211_vif vif; 744 }; 745 746 static inline 747 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 748 { 749 return container_of(p, struct ieee80211_sub_if_data, vif); 750 } 751 752 enum sdata_queue_type { 753 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 754 IEEE80211_SDATA_QUEUE_AGG_START = 1, 755 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 756 }; 757 758 enum { 759 IEEE80211_RX_MSG = 1, 760 IEEE80211_TX_STATUS_MSG = 2, 761 IEEE80211_EOSP_MSG = 3, 762 }; 763 764 struct skb_eosp_msg_data { 765 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 766 }; 767 768 enum queue_stop_reason { 769 IEEE80211_QUEUE_STOP_REASON_DRIVER, 770 IEEE80211_QUEUE_STOP_REASON_PS, 771 IEEE80211_QUEUE_STOP_REASON_CSA, 772 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 773 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 774 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 775 }; 776 777 #ifdef CONFIG_MAC80211_LEDS 778 struct tpt_led_trigger { 779 struct led_trigger trig; 780 char name[32]; 781 const struct ieee80211_tpt_blink *blink_table; 782 unsigned int blink_table_len; 783 struct timer_list timer; 784 unsigned long prev_traffic; 785 unsigned long tx_bytes, rx_bytes; 786 unsigned int active, want; 787 bool running; 788 }; 789 #endif 790 791 /** 792 * mac80211 scan flags - currently active scan mode 793 * 794 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 795 * well be on the operating channel 796 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 797 * determine if we are on the operating channel or not 798 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 799 * channel. This should not interrupt normal traffic. 800 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 801 * that the scan completed. 802 * @SCAN_ABORTED: Set for our scan work function when the driver reported 803 * a scan complete for an aborted scan. 804 */ 805 enum { 806 SCAN_SW_SCANNING, 807 SCAN_HW_SCANNING, 808 SCAN_ONCHANNEL_SCANNING, 809 SCAN_COMPLETED, 810 SCAN_ABORTED, 811 }; 812 813 /** 814 * enum mac80211_scan_state - scan state machine states 815 * 816 * @SCAN_DECISION: Main entry point to the scan state machine, this state 817 * determines if we should keep on scanning or switch back to the 818 * operating channel 819 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 820 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 821 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 822 * send out data 823 * @SCAN_RESUME: Resume the scan and scan the next channel 824 */ 825 enum mac80211_scan_state { 826 SCAN_DECISION, 827 SCAN_SET_CHANNEL, 828 SCAN_SEND_PROBE, 829 SCAN_SUSPEND, 830 SCAN_RESUME, 831 }; 832 833 struct ieee80211_local { 834 /* embed the driver visible part. 835 * don't cast (use the static inlines below), but we keep 836 * it first anyway so they become a no-op */ 837 struct ieee80211_hw hw; 838 839 const struct ieee80211_ops *ops; 840 841 /* 842 * private workqueue to mac80211. mac80211 makes this accessible 843 * via ieee80211_queue_work() 844 */ 845 struct workqueue_struct *workqueue; 846 847 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 848 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 849 spinlock_t queue_stop_reason_lock; 850 851 int open_count; 852 int monitors, cooked_mntrs; 853 /* number of interfaces with corresponding FIF_ flags */ 854 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 855 fif_probe_req; 856 int probe_req_reg; 857 unsigned int filter_flags; /* FIF_* */ 858 859 bool wiphy_ciphers_allocated; 860 861 /* protects the aggregated multicast list and filter calls */ 862 spinlock_t filter_lock; 863 864 /* used for uploading changed mc list */ 865 struct work_struct reconfig_filter; 866 867 /* used to reconfigure hardware SM PS */ 868 struct work_struct recalc_smps; 869 870 /* aggregated multicast list */ 871 struct netdev_hw_addr_list mc_list; 872 873 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 874 875 /* 876 * suspended is true if we finished all the suspend _and_ we have 877 * not yet come up from resume. This is to be used by mac80211 878 * to ensure driver sanity during suspend and mac80211's own 879 * sanity. It can eventually be used for WoW as well. 880 */ 881 bool suspended; 882 883 /* 884 * Resuming is true while suspended, but when we're reprogramming the 885 * hardware -- at that time it's allowed to use ieee80211_queue_work() 886 * again even though some other parts of the stack are still suspended 887 * and we still drop received frames to avoid waking the stack. 888 */ 889 bool resuming; 890 891 /* 892 * quiescing is true during the suspend process _only_ to 893 * ease timer cancelling etc. 894 */ 895 bool quiescing; 896 897 /* device is started */ 898 bool started; 899 900 /* device is during a HW reconfig */ 901 bool in_reconfig; 902 903 /* wowlan is enabled -- don't reconfig on resume */ 904 bool wowlan; 905 906 int tx_headroom; /* required headroom for hardware/radiotap */ 907 908 /* Tasklet and skb queue to process calls from IRQ mode. All frames 909 * added to skb_queue will be processed, but frames in 910 * skb_queue_unreliable may be dropped if the total length of these 911 * queues increases over the limit. */ 912 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 913 struct tasklet_struct tasklet; 914 struct sk_buff_head skb_queue; 915 struct sk_buff_head skb_queue_unreliable; 916 917 /* 918 * Internal FIFO queue which is shared between multiple rx path 919 * stages. Its main task is to provide a serialization mechanism, 920 * so all rx handlers can enjoy having exclusive access to their 921 * private data structures. 922 */ 923 struct sk_buff_head rx_skb_queue; 924 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 925 926 /* Station data */ 927 /* 928 * The mutex only protects the list, hash table and 929 * counter, reads are done with RCU. 930 */ 931 struct mutex sta_mtx; 932 spinlock_t tim_lock; 933 unsigned long num_sta; 934 struct list_head sta_list; 935 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 936 struct timer_list sta_cleanup; 937 int sta_generation; 938 939 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 940 struct tasklet_struct tx_pending_tasklet; 941 942 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 943 944 /* number of interfaces with corresponding IFF_ flags */ 945 atomic_t iff_allmultis, iff_promiscs; 946 947 struct rate_control_ref *rate_ctrl; 948 949 struct crypto_cipher *wep_tx_tfm; 950 struct crypto_cipher *wep_rx_tfm; 951 u32 wep_iv; 952 953 /* see iface.c */ 954 struct list_head interfaces; 955 struct mutex iflist_mtx; 956 957 /* 958 * Key mutex, protects sdata's key_list and sta_info's 959 * key pointers (write access, they're RCU.) 960 */ 961 struct mutex key_mtx; 962 963 /* mutex for scan and work locking */ 964 struct mutex mtx; 965 966 /* Scanning and BSS list */ 967 unsigned long scanning; 968 struct cfg80211_ssid scan_ssid; 969 struct cfg80211_scan_request *int_scan_req; 970 struct cfg80211_scan_request *scan_req, *hw_scan_req; 971 struct ieee80211_channel *scan_channel; 972 enum ieee80211_band hw_scan_band; 973 int scan_channel_idx; 974 int scan_ies_len; 975 976 struct work_struct sched_scan_stopped_work; 977 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 978 979 unsigned long leave_oper_channel_time; 980 enum mac80211_scan_state next_scan_state; 981 struct delayed_work scan_work; 982 struct ieee80211_sub_if_data __rcu *scan_sdata; 983 enum nl80211_channel_type _oper_channel_type; 984 struct ieee80211_channel *oper_channel, *csa_channel; 985 986 /* Temporary remain-on-channel for off-channel operations */ 987 struct ieee80211_channel *tmp_channel; 988 enum nl80211_channel_type tmp_channel_type; 989 990 /* SNMP counters */ 991 /* dot11CountersTable */ 992 u32 dot11TransmittedFragmentCount; 993 u32 dot11MulticastTransmittedFrameCount; 994 u32 dot11FailedCount; 995 u32 dot11RetryCount; 996 u32 dot11MultipleRetryCount; 997 u32 dot11FrameDuplicateCount; 998 u32 dot11ReceivedFragmentCount; 999 u32 dot11MulticastReceivedFrameCount; 1000 u32 dot11TransmittedFrameCount; 1001 1002 #ifdef CONFIG_MAC80211_LEDS 1003 int tx_led_counter, rx_led_counter; 1004 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1005 struct tpt_led_trigger *tpt_led_trigger; 1006 char tx_led_name[32], rx_led_name[32], 1007 assoc_led_name[32], radio_led_name[32]; 1008 #endif 1009 1010 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1011 /* TX/RX handler statistics */ 1012 unsigned int tx_handlers_drop; 1013 unsigned int tx_handlers_queued; 1014 unsigned int tx_handlers_drop_unencrypted; 1015 unsigned int tx_handlers_drop_fragment; 1016 unsigned int tx_handlers_drop_wep; 1017 unsigned int tx_handlers_drop_not_assoc; 1018 unsigned int tx_handlers_drop_unauth_port; 1019 unsigned int rx_handlers_drop; 1020 unsigned int rx_handlers_queued; 1021 unsigned int rx_handlers_drop_nullfunc; 1022 unsigned int rx_handlers_drop_defrag; 1023 unsigned int rx_handlers_drop_short; 1024 unsigned int tx_expand_skb_head; 1025 unsigned int tx_expand_skb_head_cloned; 1026 unsigned int rx_expand_skb_head; 1027 unsigned int rx_expand_skb_head2; 1028 unsigned int rx_handlers_fragments; 1029 unsigned int tx_status_drop; 1030 #define I802_DEBUG_INC(c) (c)++ 1031 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1032 #define I802_DEBUG_INC(c) do { } while (0) 1033 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1034 1035 1036 int total_ps_buffered; /* total number of all buffered unicast and 1037 * multicast packets for power saving stations 1038 */ 1039 1040 bool pspolling; 1041 bool offchannel_ps_enabled; 1042 /* 1043 * PS can only be enabled when we have exactly one managed 1044 * interface (and monitors) in PS, this then points there. 1045 */ 1046 struct ieee80211_sub_if_data *ps_sdata; 1047 struct work_struct dynamic_ps_enable_work; 1048 struct work_struct dynamic_ps_disable_work; 1049 struct timer_list dynamic_ps_timer; 1050 struct notifier_block network_latency_notifier; 1051 struct notifier_block ifa_notifier; 1052 1053 /* 1054 * The dynamic ps timeout configured from user space via WEXT - 1055 * this will override whatever chosen by mac80211 internally. 1056 */ 1057 int dynamic_ps_forced_timeout; 1058 int dynamic_ps_user_timeout; 1059 bool disable_dynamic_ps; 1060 1061 int user_power_level; /* in dBm */ 1062 int ap_power_level; /* in dBm */ 1063 1064 enum ieee80211_smps_mode smps_mode; 1065 1066 struct work_struct restart_work; 1067 1068 #ifdef CONFIG_MAC80211_DEBUGFS 1069 struct local_debugfsdentries { 1070 struct dentry *rcdir; 1071 struct dentry *keys; 1072 } debugfs; 1073 #endif 1074 1075 /* 1076 * Remain-on-channel support 1077 */ 1078 struct list_head roc_list; 1079 struct work_struct hw_roc_start, hw_roc_done; 1080 unsigned long hw_roc_start_time; 1081 1082 struct idr ack_status_frames; 1083 spinlock_t ack_status_lock; 1084 1085 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1086 1087 /* dummy netdev for use w/ NAPI */ 1088 struct net_device napi_dev; 1089 1090 struct napi_struct napi; 1091 1092 /* virtual monitor interface */ 1093 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1094 }; 1095 1096 static inline struct ieee80211_sub_if_data * 1097 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1098 { 1099 return netdev_priv(dev); 1100 } 1101 1102 static inline struct ieee80211_sub_if_data * 1103 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1104 { 1105 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1106 } 1107 1108 /* this struct represents 802.11n's RA/TID combination */ 1109 struct ieee80211_ra_tid { 1110 u8 ra[ETH_ALEN]; 1111 u16 tid; 1112 }; 1113 1114 /* Parsed Information Elements */ 1115 struct ieee802_11_elems { 1116 u8 *ie_start; 1117 size_t total_len; 1118 1119 /* pointers to IEs */ 1120 u8 *ssid; 1121 u8 *supp_rates; 1122 u8 *fh_params; 1123 u8 *ds_params; 1124 u8 *cf_params; 1125 struct ieee80211_tim_ie *tim; 1126 u8 *ibss_params; 1127 u8 *challenge; 1128 u8 *wpa; 1129 u8 *rsn; 1130 u8 *erp_info; 1131 u8 *ext_supp_rates; 1132 u8 *wmm_info; 1133 u8 *wmm_param; 1134 struct ieee80211_ht_cap *ht_cap_elem; 1135 struct ieee80211_ht_operation *ht_operation; 1136 struct ieee80211_meshconf_ie *mesh_config; 1137 u8 *mesh_id; 1138 u8 *peering; 1139 u8 *preq; 1140 u8 *prep; 1141 u8 *perr; 1142 struct ieee80211_rann_ie *rann; 1143 struct ieee80211_channel_sw_ie *ch_switch_ie; 1144 u8 *country_elem; 1145 u8 *pwr_constr_elem; 1146 u8 *quiet_elem; /* first quite element */ 1147 u8 *timeout_int; 1148 1149 /* length of them, respectively */ 1150 u8 ssid_len; 1151 u8 supp_rates_len; 1152 u8 fh_params_len; 1153 u8 ds_params_len; 1154 u8 cf_params_len; 1155 u8 tim_len; 1156 u8 ibss_params_len; 1157 u8 challenge_len; 1158 u8 wpa_len; 1159 u8 rsn_len; 1160 u8 erp_info_len; 1161 u8 ext_supp_rates_len; 1162 u8 wmm_info_len; 1163 u8 wmm_param_len; 1164 u8 mesh_id_len; 1165 u8 peering_len; 1166 u8 preq_len; 1167 u8 prep_len; 1168 u8 perr_len; 1169 u8 country_elem_len; 1170 u8 quiet_elem_len; 1171 u8 num_of_quiet_elem; /* can be more the one */ 1172 u8 timeout_int_len; 1173 1174 /* whether a parse error occurred while retrieving these elements */ 1175 bool parse_error; 1176 }; 1177 1178 static inline struct ieee80211_local *hw_to_local( 1179 struct ieee80211_hw *hw) 1180 { 1181 return container_of(hw, struct ieee80211_local, hw); 1182 } 1183 1184 1185 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1186 { 1187 return ether_addr_equal(raddr, addr) || 1188 is_broadcast_ether_addr(raddr); 1189 } 1190 1191 1192 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1193 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1194 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1195 u32 changed); 1196 void ieee80211_configure_filter(struct ieee80211_local *local); 1197 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1198 1199 /* STA code */ 1200 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1201 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1202 struct cfg80211_auth_request *req); 1203 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1204 struct cfg80211_assoc_request *req); 1205 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1206 struct cfg80211_deauth_request *req); 1207 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1208 struct cfg80211_disassoc_request *req); 1209 void ieee80211_send_pspoll(struct ieee80211_local *local, 1210 struct ieee80211_sub_if_data *sdata); 1211 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1212 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1213 int ieee80211_max_network_latency(struct notifier_block *nb, 1214 unsigned long data, void *dummy); 1215 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1216 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1217 struct ieee80211_channel_sw_ie *sw_elem, 1218 struct ieee80211_bss *bss, 1219 u64 timestamp); 1220 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1221 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1222 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1223 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1224 struct sk_buff *skb); 1225 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1226 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1227 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1228 1229 /* IBSS code */ 1230 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1231 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1232 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1233 const u8 *bssid, const u8 *addr, u32 supp_rates); 1234 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1235 struct cfg80211_ibss_params *params); 1236 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1237 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1238 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1239 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1240 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1241 struct sk_buff *skb); 1242 1243 /* mesh code */ 1244 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1245 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1246 struct sk_buff *skb); 1247 1248 /* scan/BSS handling */ 1249 void ieee80211_scan_work(struct work_struct *work); 1250 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1251 const u8 *ssid, u8 ssid_len, 1252 struct ieee80211_channel *chan); 1253 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1254 struct cfg80211_scan_request *req); 1255 void ieee80211_scan_cancel(struct ieee80211_local *local); 1256 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1257 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1258 1259 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1260 struct ieee80211_bss * 1261 ieee80211_bss_info_update(struct ieee80211_local *local, 1262 struct ieee80211_rx_status *rx_status, 1263 struct ieee80211_mgmt *mgmt, 1264 size_t len, 1265 struct ieee802_11_elems *elems, 1266 struct ieee80211_channel *channel, 1267 bool beacon); 1268 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1269 struct ieee80211_bss *bss); 1270 1271 /* scheduled scan handling */ 1272 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1273 struct cfg80211_sched_scan_request *req); 1274 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1275 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1276 1277 /* off-channel helpers */ 1278 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1279 bool offchannel_ps_enable); 1280 void ieee80211_offchannel_return(struct ieee80211_local *local, 1281 bool offchannel_ps_disable); 1282 void ieee80211_roc_setup(struct ieee80211_local *local); 1283 void ieee80211_start_next_roc(struct ieee80211_local *local); 1284 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata); 1285 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc); 1286 void ieee80211_sw_roc_work(struct work_struct *work); 1287 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1288 1289 /* interface handling */ 1290 int ieee80211_iface_init(void); 1291 void ieee80211_iface_exit(void); 1292 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1293 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1294 struct vif_params *params); 1295 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1296 enum nl80211_iftype type); 1297 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1298 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1299 void ieee80211_recalc_idle(struct ieee80211_local *local); 1300 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1301 const int offset); 1302 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1303 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1304 1305 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1306 { 1307 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1308 } 1309 1310 /* tx handling */ 1311 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1312 void ieee80211_tx_pending(unsigned long data); 1313 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1314 struct net_device *dev); 1315 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1316 struct net_device *dev); 1317 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1318 struct sk_buff_head *skbs); 1319 1320 /* HT */ 1321 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1322 struct ieee80211_sta_ht_cap *ht_cap); 1323 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1324 struct ieee80211_supported_band *sband, 1325 struct ieee80211_ht_cap *ht_cap_ie, 1326 struct ieee80211_sta_ht_cap *ht_cap); 1327 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1328 const u8 *da, u16 tid, 1329 u16 initiator, u16 reason_code); 1330 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1331 enum ieee80211_smps_mode smps, const u8 *da, 1332 const u8 *bssid); 1333 void ieee80211_request_smps_work(struct work_struct *work); 1334 1335 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1336 u16 initiator, u16 reason, bool stop); 1337 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1338 u16 initiator, u16 reason, bool stop); 1339 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1340 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1341 struct sta_info *sta, 1342 struct ieee80211_mgmt *mgmt, size_t len); 1343 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1344 struct sta_info *sta, 1345 struct ieee80211_mgmt *mgmt, 1346 size_t len); 1347 void ieee80211_process_addba_request(struct ieee80211_local *local, 1348 struct sta_info *sta, 1349 struct ieee80211_mgmt *mgmt, 1350 size_t len); 1351 1352 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1353 enum ieee80211_back_parties initiator, 1354 bool tx); 1355 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1356 enum ieee80211_back_parties initiator, 1357 bool tx); 1358 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1359 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1360 void ieee80211_ba_session_work(struct work_struct *work); 1361 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1362 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1363 1364 /* Spectrum management */ 1365 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1366 struct ieee80211_mgmt *mgmt, 1367 size_t len); 1368 1369 /* Suspend/resume and hw reconfiguration */ 1370 int ieee80211_reconfig(struct ieee80211_local *local); 1371 void ieee80211_stop_device(struct ieee80211_local *local); 1372 1373 int __ieee80211_suspend(struct ieee80211_hw *hw, 1374 struct cfg80211_wowlan *wowlan); 1375 1376 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1377 { 1378 struct ieee80211_local *local = hw_to_local(hw); 1379 1380 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1381 "%s: resume with hardware scan still in progress\n", 1382 wiphy_name(hw->wiphy)); 1383 1384 return ieee80211_reconfig(hw_to_local(hw)); 1385 } 1386 1387 /* utility functions/constants */ 1388 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1389 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1390 enum nl80211_iftype type); 1391 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1392 int rate, int erp, int short_preamble); 1393 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1394 struct ieee80211_hdr *hdr, const u8 *tsc, 1395 gfp_t gfp); 1396 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1397 bool bss_notify); 1398 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1399 1400 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1401 struct sk_buff *skb, int tid); 1402 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1403 struct sk_buff *skb) 1404 { 1405 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1406 ieee80211_tx_skb_tid(sdata, skb, 7); 1407 } 1408 1409 void ieee802_11_parse_elems(u8 *start, size_t len, 1410 struct ieee802_11_elems *elems); 1411 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1412 struct ieee802_11_elems *elems, 1413 u64 filter, u32 crc); 1414 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1415 enum ieee80211_band band); 1416 1417 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1418 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1419 void ieee80211_dynamic_ps_timer(unsigned long data); 1420 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1421 struct ieee80211_sub_if_data *sdata, 1422 int powersave); 1423 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1424 struct ieee80211_hdr *hdr); 1425 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1426 struct ieee80211_hdr *hdr, bool ack); 1427 1428 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1429 enum queue_stop_reason reason); 1430 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1431 enum queue_stop_reason reason); 1432 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1433 enum queue_stop_reason reason); 1434 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1435 enum queue_stop_reason reason); 1436 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1437 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1438 struct sk_buff *skb); 1439 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1440 struct sk_buff_head *skbs, 1441 void (*fn)(void *data), void *data); 1442 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1443 struct sk_buff_head *skbs) 1444 { 1445 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1446 } 1447 1448 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1449 u16 transaction, u16 auth_alg, 1450 u8 *extra, size_t extra_len, const u8 *bssid, 1451 const u8 *da, const u8 *key, u8 key_len, u8 key_idx); 1452 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 1453 const u8 *bssid, u16 stype, u16 reason, 1454 bool send_frame, u8 *frame_buf); 1455 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1456 const u8 *ie, size_t ie_len, 1457 enum ieee80211_band band, u32 rate_mask, 1458 u8 channel); 1459 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1460 u8 *dst, u32 ratemask, 1461 struct ieee80211_channel *chan, 1462 const u8 *ssid, size_t ssid_len, 1463 const u8 *ie, size_t ie_len, 1464 bool directed); 1465 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1466 const u8 *ssid, size_t ssid_len, 1467 const u8 *ie, size_t ie_len, 1468 u32 ratemask, bool directed, bool no_cck, 1469 struct ieee80211_channel *channel); 1470 1471 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1472 const size_t supp_rates_len, 1473 const u8 *supp_rates); 1474 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1475 struct ieee802_11_elems *elems, 1476 enum ieee80211_band band, u32 *basic_rates); 1477 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1478 enum ieee80211_smps_mode smps_mode); 1479 void ieee80211_recalc_smps(struct ieee80211_local *local); 1480 1481 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1482 const u8 *ids, int n_ids, size_t offset); 1483 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1484 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1485 u16 cap); 1486 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1487 struct ieee80211_channel *channel, 1488 enum nl80211_channel_type channel_type, 1489 u16 prot_mode); 1490 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1491 u32 cap); 1492 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1493 struct sk_buff *skb, bool need_basic, 1494 enum ieee80211_band band); 1495 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1496 struct sk_buff *skb, bool need_basic, 1497 enum ieee80211_band band); 1498 1499 /* channel management */ 1500 enum ieee80211_chan_mode { 1501 CHAN_MODE_UNDEFINED, 1502 CHAN_MODE_HOPPING, 1503 CHAN_MODE_FIXED, 1504 }; 1505 1506 enum ieee80211_chan_mode 1507 ieee80211_get_channel_mode(struct ieee80211_local *local, 1508 struct ieee80211_sub_if_data *ignore); 1509 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1510 struct ieee80211_sub_if_data *sdata, 1511 enum nl80211_channel_type chantype); 1512 enum nl80211_channel_type 1513 ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper); 1514 1515 #ifdef CONFIG_MAC80211_NOINLINE 1516 #define debug_noinline noinline 1517 #else 1518 #define debug_noinline 1519 #endif 1520 1521 #endif /* IEEE80211_I_H */ 1522