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 struct ieee80211_fragment_entry { 72 unsigned long first_frag_time; 73 unsigned int seq; 74 unsigned int rx_queue; 75 unsigned int last_frag; 76 unsigned int extra_len; 77 struct sk_buff_head skb_list; 78 int ccmp; /* Whether fragments were encrypted with CCMP */ 79 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 80 }; 81 82 83 struct ieee80211_bss { 84 /* don't want to look up all the time */ 85 size_t ssid_len; 86 u8 ssid[IEEE80211_MAX_SSID_LEN]; 87 88 u32 device_ts; 89 90 u8 dtim_period; 91 92 bool wmm_used; 93 bool uapsd_supported; 94 95 unsigned long last_probe_resp; 96 97 #ifdef CONFIG_MAC80211_MESH 98 u8 *mesh_id; 99 size_t mesh_id_len; 100 u8 *mesh_cfg; 101 #endif 102 103 #define IEEE80211_MAX_SUPP_RATES 32 104 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 105 size_t supp_rates_len; 106 107 /* 108 * During association, we save an ERP value from a probe response so 109 * that we can feed ERP info to the driver when handling the 110 * association completes. these fields probably won't be up-to-date 111 * otherwise, you probably don't want to use them. 112 */ 113 bool has_erp_value; 114 u8 erp_value; 115 116 /* Keep track of the corruption of the last beacon/probe response. */ 117 u8 corrupt_data; 118 119 /* Keep track of what bits of information we have valid info for. */ 120 u8 valid_data; 121 }; 122 123 /** 124 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 125 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 126 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 127 * 128 * These are bss flags that are attached to a bss in the 129 * @corrupt_data field of &struct ieee80211_bss. 130 */ 131 enum ieee80211_bss_corrupt_data_flags { 132 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 133 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 134 }; 135 136 /** 137 * enum ieee80211_valid_data_flags - BSS valid data flags 138 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE 139 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 140 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 141 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 142 * 143 * These are bss flags that are attached to a bss in the 144 * @valid_data field of &struct ieee80211_bss. They show which parts 145 * of the data structure were recieved as a result of an un-corrupted 146 * beacon/probe response. 147 */ 148 enum ieee80211_bss_valid_data_flags { 149 IEEE80211_BSS_VALID_DTIM = BIT(0), 150 IEEE80211_BSS_VALID_WMM = BIT(1), 151 IEEE80211_BSS_VALID_RATES = BIT(2), 152 IEEE80211_BSS_VALID_ERP = BIT(3) 153 }; 154 155 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 156 { 157 #ifdef CONFIG_MAC80211_MESH 158 return bss->mesh_cfg; 159 #endif 160 return NULL; 161 } 162 163 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 164 { 165 #ifdef CONFIG_MAC80211_MESH 166 return bss->mesh_id; 167 #endif 168 return NULL; 169 } 170 171 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 172 { 173 #ifdef CONFIG_MAC80211_MESH 174 return bss->mesh_id_len; 175 #endif 176 return 0; 177 } 178 179 180 typedef unsigned __bitwise__ ieee80211_tx_result; 181 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 182 #define TX_DROP ((__force ieee80211_tx_result) 1u) 183 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 184 185 #define IEEE80211_TX_UNICAST BIT(1) 186 #define IEEE80211_TX_PS_BUFFERED BIT(2) 187 188 struct ieee80211_tx_data { 189 struct sk_buff *skb; 190 struct sk_buff_head skbs; 191 struct ieee80211_local *local; 192 struct ieee80211_sub_if_data *sdata; 193 struct sta_info *sta; 194 struct ieee80211_key *key; 195 196 struct ieee80211_channel *channel; 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 ieee80211_if_ap { 278 struct beacon_data __rcu *beacon; 279 struct sk_buff __rcu *probe_resp; 280 281 struct list_head vlans; 282 283 /* yes, this looks ugly, but guarantees that we can later use 284 * bitmap_empty :) 285 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 286 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 287 struct sk_buff_head ps_bc_buf; 288 atomic_t num_sta_ps; /* number of stations in PS mode */ 289 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 290 int dtim_count; 291 bool dtim_bc_mc; 292 }; 293 294 struct ieee80211_if_wds { 295 struct sta_info *sta; 296 u8 remote_addr[ETH_ALEN]; 297 }; 298 299 struct ieee80211_if_vlan { 300 struct list_head list; 301 302 /* used for all tx if the VLAN is configured to 4-addr mode */ 303 struct sta_info __rcu *sta; 304 }; 305 306 struct mesh_stats { 307 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 308 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 309 __u32 fwded_frames; /* Mesh total forwarded frames */ 310 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 311 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 312 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 313 atomic_t estab_plinks; 314 }; 315 316 #define PREQ_Q_F_START 0x1 317 #define PREQ_Q_F_REFRESH 0x2 318 struct mesh_preq_queue { 319 struct list_head list; 320 u8 dst[ETH_ALEN]; 321 u8 flags; 322 }; 323 324 #if HZ/100 == 0 325 #define IEEE80211_ROC_MIN_LEFT 1 326 #else 327 #define IEEE80211_ROC_MIN_LEFT (HZ/100) 328 #endif 329 330 struct ieee80211_roc_work { 331 struct list_head list; 332 struct list_head dependents; 333 334 struct delayed_work work; 335 336 struct ieee80211_sub_if_data *sdata; 337 338 struct ieee80211_channel *chan; 339 enum nl80211_channel_type chan_type; 340 341 bool started, abort, hw_begun, notified; 342 343 unsigned long hw_start_time; 344 345 u32 duration, req_duration; 346 struct sk_buff *frame; 347 u64 mgmt_tx_cookie; 348 }; 349 350 /* flags used in struct ieee80211_if_managed.flags */ 351 enum ieee80211_sta_flags { 352 IEEE80211_STA_BEACON_POLL = BIT(0), 353 IEEE80211_STA_CONNECTION_POLL = BIT(1), 354 IEEE80211_STA_CONTROL_PORT = BIT(2), 355 IEEE80211_STA_DISABLE_11N = BIT(4), 356 IEEE80211_STA_CSA_RECEIVED = BIT(5), 357 IEEE80211_STA_MFP_ENABLED = BIT(6), 358 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 359 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 360 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 361 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 362 }; 363 364 struct ieee80211_mgd_auth_data { 365 struct cfg80211_bss *bss; 366 unsigned long timeout; 367 int tries; 368 u16 algorithm, expected_transaction; 369 370 u8 key[WLAN_KEY_LEN_WEP104]; 371 u8 key_len, key_idx; 372 bool done; 373 374 size_t ie_len; 375 u8 ie[]; 376 }; 377 378 struct ieee80211_mgd_assoc_data { 379 struct cfg80211_bss *bss; 380 const u8 *supp_rates; 381 382 unsigned long timeout; 383 int tries; 384 385 u16 capability; 386 u8 prev_bssid[ETH_ALEN]; 387 u8 ssid[IEEE80211_MAX_SSID_LEN]; 388 u8 ssid_len; 389 u8 supp_rates_len; 390 bool wmm, uapsd; 391 bool have_beacon; 392 bool sent_assoc; 393 bool synced; 394 395 u8 ap_ht_param; 396 397 size_t ie_len; 398 u8 ie[]; 399 }; 400 401 struct ieee80211_if_managed { 402 struct timer_list timer; 403 struct timer_list conn_mon_timer; 404 struct timer_list bcn_mon_timer; 405 struct timer_list chswitch_timer; 406 struct work_struct monitor_work; 407 struct work_struct chswitch_work; 408 struct work_struct beacon_connection_loss_work; 409 410 unsigned long beacon_timeout; 411 unsigned long probe_timeout; 412 int probe_send_count; 413 bool nullfunc_failed; 414 415 struct mutex mtx; 416 struct cfg80211_bss *associated; 417 struct ieee80211_mgd_auth_data *auth_data; 418 struct ieee80211_mgd_assoc_data *assoc_data; 419 420 u8 bssid[ETH_ALEN]; 421 422 u16 aid; 423 424 unsigned long timers_running; /* used for quiesce/restart */ 425 bool powersave; /* powersave requested for this iface */ 426 bool broken_ap; /* AP is broken -- turn off powersave */ 427 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 428 ap_smps, /* smps mode AP thinks we're in */ 429 driver_smps_mode; /* smps mode request */ 430 431 struct work_struct request_smps_work; 432 433 unsigned int flags; 434 435 bool beacon_crc_valid; 436 u32 beacon_crc; 437 438 enum { 439 IEEE80211_MFP_DISABLED, 440 IEEE80211_MFP_OPTIONAL, 441 IEEE80211_MFP_REQUIRED 442 } mfp; /* management frame protection */ 443 444 /* 445 * Bitmask of enabled u-apsd queues, 446 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 447 * to take effect. 448 */ 449 unsigned int uapsd_queues; 450 451 /* 452 * Maximum number of buffered frames AP can deliver during a 453 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 454 * Needs a new association to take effect. 455 */ 456 unsigned int uapsd_max_sp_len; 457 458 int wmm_last_param_set; 459 460 u8 use_4addr; 461 462 /* Signal strength from the last Beacon frame in the current BSS. */ 463 int last_beacon_signal; 464 465 /* 466 * Weighted average of the signal strength from Beacon frames in the 467 * current BSS. This is in units of 1/16 of the signal unit to maintain 468 * accuracy and to speed up calculations, i.e., the value need to be 469 * divided by 16 to get the actual value. 470 */ 471 int ave_beacon_signal; 472 473 /* 474 * Number of Beacon frames used in ave_beacon_signal. This can be used 475 * to avoid generating less reliable cqm events that would be based 476 * only on couple of received frames. 477 */ 478 unsigned int count_beacon_signal; 479 480 /* 481 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 482 * that triggered a cqm event. 0 indicates that no event has been 483 * generated for the current association. 484 */ 485 int last_cqm_event_signal; 486 487 /* 488 * State variables for keeping track of RSSI of the AP currently 489 * connected to and informing driver when RSSI has gone 490 * below/above a certain threshold. 491 */ 492 int rssi_min_thold, rssi_max_thold; 493 int last_ave_beacon_signal; 494 495 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 496 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 497 }; 498 499 struct ieee80211_if_ibss { 500 struct timer_list timer; 501 502 struct mutex mtx; 503 504 unsigned long last_scan_completed; 505 506 u32 basic_rates; 507 508 bool timer_running; 509 510 bool fixed_bssid; 511 bool fixed_channel; 512 bool privacy; 513 514 bool control_port; 515 unsigned int auth_frame_registrations; 516 517 u8 bssid[ETH_ALEN] __aligned(2); 518 u8 ssid[IEEE80211_MAX_SSID_LEN]; 519 u8 ssid_len, ie_len; 520 u8 *ie; 521 struct ieee80211_channel *channel; 522 enum nl80211_channel_type channel_type; 523 524 unsigned long ibss_join_req; 525 /* probe response/beacon for IBSS */ 526 struct sk_buff __rcu *presp; 527 struct sk_buff *skb; 528 529 spinlock_t incomplete_lock; 530 struct list_head incomplete_stations; 531 532 enum { 533 IEEE80211_IBSS_MLME_SEARCH, 534 IEEE80211_IBSS_MLME_JOINED, 535 } state; 536 }; 537 538 /** 539 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 540 * 541 * these declarations define the interface, which enables 542 * vendor-specific mesh synchronization 543 * 544 */ 545 struct ieee802_11_elems; 546 struct ieee80211_mesh_sync_ops { 547 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 548 u16 stype, 549 struct ieee80211_mgmt *mgmt, 550 struct ieee802_11_elems *elems, 551 struct ieee80211_rx_status *rx_status); 552 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 553 /* add other framework functions here */ 554 }; 555 556 struct ieee80211_if_mesh { 557 struct timer_list housekeeping_timer; 558 struct timer_list mesh_path_timer; 559 struct timer_list mesh_path_root_timer; 560 561 unsigned long timers_running; 562 563 unsigned long wrkq_flags; 564 565 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 566 size_t mesh_id_len; 567 /* Active Path Selection Protocol Identifier */ 568 u8 mesh_pp_id; 569 /* Active Path Selection Metric Identifier */ 570 u8 mesh_pm_id; 571 /* Congestion Control Mode Identifier */ 572 u8 mesh_cc_id; 573 /* Synchronization Protocol Identifier */ 574 u8 mesh_sp_id; 575 /* Authentication Protocol Identifier */ 576 u8 mesh_auth_id; 577 /* Local mesh Sequence Number */ 578 u32 sn; 579 /* Last used PREQ ID */ 580 u32 preq_id; 581 atomic_t mpaths; 582 /* Timestamp of last SN update */ 583 unsigned long last_sn_update; 584 /* Time when it's ok to send next PERR */ 585 unsigned long next_perr; 586 /* Timestamp of last PREQ sent */ 587 unsigned long last_preq; 588 struct mesh_rmc *rmc; 589 spinlock_t mesh_preq_queue_lock; 590 struct mesh_preq_queue preq_queue; 591 int preq_queue_len; 592 struct mesh_stats mshstats; 593 struct mesh_config mshcfg; 594 u32 mesh_seqnum; 595 bool accepting_plinks; 596 int num_gates; 597 const u8 *ie; 598 u8 ie_len; 599 enum { 600 IEEE80211_MESH_SEC_NONE = 0x0, 601 IEEE80211_MESH_SEC_AUTHED = 0x1, 602 IEEE80211_MESH_SEC_SECURED = 0x2, 603 } security; 604 /* Extensible Synchronization Framework */ 605 struct ieee80211_mesh_sync_ops *sync_ops; 606 s64 sync_offset_clockdrift_max; 607 spinlock_t sync_offset_lock; 608 bool adjusting_tbtt; 609 }; 610 611 #ifdef CONFIG_MAC80211_MESH 612 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 613 do { (msh)->mshstats.name++; } while (0) 614 #else 615 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 616 do { } while (0) 617 #endif 618 619 /** 620 * enum ieee80211_sub_if_data_flags - virtual interface flags 621 * 622 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 623 * @IEEE80211_SDATA_PROMISC: interface is promisc 624 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 625 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 626 * associated stations and deliver multicast frames both 627 * back to wireless media and to the local net stack. 628 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 629 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 630 */ 631 enum ieee80211_sub_if_data_flags { 632 IEEE80211_SDATA_ALLMULTI = BIT(0), 633 IEEE80211_SDATA_PROMISC = BIT(1), 634 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 635 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 636 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 637 IEEE80211_SDATA_IN_DRIVER = BIT(5), 638 }; 639 640 /** 641 * enum ieee80211_sdata_state_bits - virtual interface state bits 642 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 643 * mirrors netif_running() but is separate for interface type 644 * change handling while the interface is up 645 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 646 * mode, so queues are stopped 647 */ 648 enum ieee80211_sdata_state_bits { 649 SDATA_STATE_RUNNING, 650 SDATA_STATE_OFFCHANNEL, 651 }; 652 653 struct ieee80211_sub_if_data { 654 struct list_head list; 655 656 struct wireless_dev wdev; 657 658 /* keys */ 659 struct list_head key_list; 660 661 /* count for keys needing tailroom space allocation */ 662 int crypto_tx_tailroom_needed_cnt; 663 664 struct net_device *dev; 665 struct ieee80211_local *local; 666 667 unsigned int flags; 668 669 unsigned long state; 670 671 int drop_unencrypted; 672 673 char name[IFNAMSIZ]; 674 675 /* to detect idle changes */ 676 bool old_idle; 677 678 /* Fragment table for host-based reassembly */ 679 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 680 unsigned int fragment_next; 681 682 /* TID bitmap for NoAck policy */ 683 u16 noack_map; 684 685 /* bit field of ACM bits (BIT(802.1D tag)) */ 686 u8 wmm_acm; 687 688 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 689 struct ieee80211_key __rcu *default_unicast_key; 690 struct ieee80211_key __rcu *default_multicast_key; 691 struct ieee80211_key __rcu *default_mgmt_key; 692 693 u16 sequence_number; 694 __be16 control_port_protocol; 695 bool control_port_no_encrypt; 696 697 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 698 699 struct work_struct work; 700 struct sk_buff_head skb_queue; 701 702 bool arp_filter_state; 703 704 /* 705 * AP this belongs to: self in AP mode and 706 * corresponding AP in VLAN mode, NULL for 707 * all others (might be needed later in IBSS) 708 */ 709 struct ieee80211_if_ap *bss; 710 711 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 712 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 713 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 714 715 union { 716 struct ieee80211_if_ap ap; 717 struct ieee80211_if_wds wds; 718 struct ieee80211_if_vlan vlan; 719 struct ieee80211_if_managed mgd; 720 struct ieee80211_if_ibss ibss; 721 struct ieee80211_if_mesh mesh; 722 u32 mntr_flags; 723 } u; 724 725 #ifdef CONFIG_MAC80211_DEBUGFS 726 struct { 727 struct dentry *dir; 728 struct dentry *subdir_stations; 729 struct dentry *default_unicast_key; 730 struct dentry *default_multicast_key; 731 struct dentry *default_mgmt_key; 732 } debugfs; 733 #endif 734 /* must be last, dynamically sized area in this! */ 735 struct ieee80211_vif vif; 736 }; 737 738 static inline 739 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 740 { 741 return container_of(p, struct ieee80211_sub_if_data, vif); 742 } 743 744 enum sdata_queue_type { 745 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 746 IEEE80211_SDATA_QUEUE_AGG_START = 1, 747 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 748 }; 749 750 enum { 751 IEEE80211_RX_MSG = 1, 752 IEEE80211_TX_STATUS_MSG = 2, 753 IEEE80211_EOSP_MSG = 3, 754 }; 755 756 struct skb_eosp_msg_data { 757 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 758 }; 759 760 enum queue_stop_reason { 761 IEEE80211_QUEUE_STOP_REASON_DRIVER, 762 IEEE80211_QUEUE_STOP_REASON_PS, 763 IEEE80211_QUEUE_STOP_REASON_CSA, 764 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 765 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 766 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 767 }; 768 769 #ifdef CONFIG_MAC80211_LEDS 770 struct tpt_led_trigger { 771 struct led_trigger trig; 772 char name[32]; 773 const struct ieee80211_tpt_blink *blink_table; 774 unsigned int blink_table_len; 775 struct timer_list timer; 776 unsigned long prev_traffic; 777 unsigned long tx_bytes, rx_bytes; 778 unsigned int active, want; 779 bool running; 780 }; 781 #endif 782 783 /** 784 * mac80211 scan flags - currently active scan mode 785 * 786 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 787 * well be on the operating channel 788 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 789 * determine if we are on the operating channel or not 790 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 791 * channel. This should not interrupt normal traffic. 792 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 793 * that the scan completed. 794 * @SCAN_ABORTED: Set for our scan work function when the driver reported 795 * a scan complete for an aborted scan. 796 */ 797 enum { 798 SCAN_SW_SCANNING, 799 SCAN_HW_SCANNING, 800 SCAN_ONCHANNEL_SCANNING, 801 SCAN_COMPLETED, 802 SCAN_ABORTED, 803 }; 804 805 /** 806 * enum mac80211_scan_state - scan state machine states 807 * 808 * @SCAN_DECISION: Main entry point to the scan state machine, this state 809 * determines if we should keep on scanning or switch back to the 810 * operating channel 811 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 812 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 813 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 814 * send out data 815 * @SCAN_RESUME: Resume the scan and scan the next channel 816 */ 817 enum mac80211_scan_state { 818 SCAN_DECISION, 819 SCAN_SET_CHANNEL, 820 SCAN_SEND_PROBE, 821 SCAN_SUSPEND, 822 SCAN_RESUME, 823 }; 824 825 struct ieee80211_local { 826 /* embed the driver visible part. 827 * don't cast (use the static inlines below), but we keep 828 * it first anyway so they become a no-op */ 829 struct ieee80211_hw hw; 830 831 const struct ieee80211_ops *ops; 832 833 /* 834 * private workqueue to mac80211. mac80211 makes this accessible 835 * via ieee80211_queue_work() 836 */ 837 struct workqueue_struct *workqueue; 838 839 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 840 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 841 spinlock_t queue_stop_reason_lock; 842 843 int open_count; 844 int monitors, cooked_mntrs; 845 /* number of interfaces with corresponding FIF_ flags */ 846 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 847 fif_probe_req; 848 int probe_req_reg; 849 unsigned int filter_flags; /* FIF_* */ 850 851 bool wiphy_ciphers_allocated; 852 853 /* protects the aggregated multicast list and filter calls */ 854 spinlock_t filter_lock; 855 856 /* used for uploading changed mc list */ 857 struct work_struct reconfig_filter; 858 859 /* used to reconfigure hardware SM PS */ 860 struct work_struct recalc_smps; 861 862 /* aggregated multicast list */ 863 struct netdev_hw_addr_list mc_list; 864 865 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 866 867 /* 868 * suspended is true if we finished all the suspend _and_ we have 869 * not yet come up from resume. This is to be used by mac80211 870 * to ensure driver sanity during suspend and mac80211's own 871 * sanity. It can eventually be used for WoW as well. 872 */ 873 bool suspended; 874 875 /* 876 * Resuming is true while suspended, but when we're reprogramming the 877 * hardware -- at that time it's allowed to use ieee80211_queue_work() 878 * again even though some other parts of the stack are still suspended 879 * and we still drop received frames to avoid waking the stack. 880 */ 881 bool resuming; 882 883 /* 884 * quiescing is true during the suspend process _only_ to 885 * ease timer cancelling etc. 886 */ 887 bool quiescing; 888 889 /* device is started */ 890 bool started; 891 892 /* device is during a HW reconfig */ 893 bool in_reconfig; 894 895 /* wowlan is enabled -- don't reconfig on resume */ 896 bool wowlan; 897 898 int tx_headroom; /* required headroom for hardware/radiotap */ 899 900 /* Tasklet and skb queue to process calls from IRQ mode. All frames 901 * added to skb_queue will be processed, but frames in 902 * skb_queue_unreliable may be dropped if the total length of these 903 * queues increases over the limit. */ 904 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 905 struct tasklet_struct tasklet; 906 struct sk_buff_head skb_queue; 907 struct sk_buff_head skb_queue_unreliable; 908 909 /* 910 * Internal FIFO queue which is shared between multiple rx path 911 * stages. Its main task is to provide a serialization mechanism, 912 * so all rx handlers can enjoy having exclusive access to their 913 * private data structures. 914 */ 915 struct sk_buff_head rx_skb_queue; 916 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 917 918 /* Station data */ 919 /* 920 * The mutex only protects the list, hash table and 921 * counter, reads are done with RCU. 922 */ 923 struct mutex sta_mtx; 924 spinlock_t tim_lock; 925 unsigned long num_sta; 926 struct list_head sta_list; 927 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 928 struct timer_list sta_cleanup; 929 int sta_generation; 930 931 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 932 struct tasklet_struct tx_pending_tasklet; 933 934 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 935 936 /* number of interfaces with corresponding IFF_ flags */ 937 atomic_t iff_allmultis, iff_promiscs; 938 939 struct rate_control_ref *rate_ctrl; 940 941 struct crypto_cipher *wep_tx_tfm; 942 struct crypto_cipher *wep_rx_tfm; 943 u32 wep_iv; 944 945 /* see iface.c */ 946 struct list_head interfaces; 947 struct mutex iflist_mtx; 948 949 /* 950 * Key mutex, protects sdata's key_list and sta_info's 951 * key pointers (write access, they're RCU.) 952 */ 953 struct mutex key_mtx; 954 955 /* mutex for scan and work locking */ 956 struct mutex mtx; 957 958 /* Scanning and BSS list */ 959 unsigned long scanning; 960 struct cfg80211_ssid scan_ssid; 961 struct cfg80211_scan_request *int_scan_req; 962 struct cfg80211_scan_request *scan_req, *hw_scan_req; 963 struct ieee80211_channel *scan_channel; 964 enum ieee80211_band hw_scan_band; 965 int scan_channel_idx; 966 int scan_ies_len; 967 968 struct ieee80211_sched_scan_ies sched_scan_ies; 969 struct work_struct sched_scan_stopped_work; 970 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 971 972 unsigned long leave_oper_channel_time; 973 enum mac80211_scan_state next_scan_state; 974 struct delayed_work scan_work; 975 struct ieee80211_sub_if_data __rcu *scan_sdata; 976 enum nl80211_channel_type _oper_channel_type; 977 struct ieee80211_channel *oper_channel, *csa_channel; 978 979 /* Temporary remain-on-channel for off-channel operations */ 980 struct ieee80211_channel *tmp_channel; 981 enum nl80211_channel_type tmp_channel_type; 982 983 /* SNMP counters */ 984 /* dot11CountersTable */ 985 u32 dot11TransmittedFragmentCount; 986 u32 dot11MulticastTransmittedFrameCount; 987 u32 dot11FailedCount; 988 u32 dot11RetryCount; 989 u32 dot11MultipleRetryCount; 990 u32 dot11FrameDuplicateCount; 991 u32 dot11ReceivedFragmentCount; 992 u32 dot11MulticastReceivedFrameCount; 993 u32 dot11TransmittedFrameCount; 994 995 #ifdef CONFIG_MAC80211_LEDS 996 int tx_led_counter, rx_led_counter; 997 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 998 struct tpt_led_trigger *tpt_led_trigger; 999 char tx_led_name[32], rx_led_name[32], 1000 assoc_led_name[32], radio_led_name[32]; 1001 #endif 1002 1003 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1004 /* TX/RX handler statistics */ 1005 unsigned int tx_handlers_drop; 1006 unsigned int tx_handlers_queued; 1007 unsigned int tx_handlers_drop_unencrypted; 1008 unsigned int tx_handlers_drop_fragment; 1009 unsigned int tx_handlers_drop_wep; 1010 unsigned int tx_handlers_drop_not_assoc; 1011 unsigned int tx_handlers_drop_unauth_port; 1012 unsigned int rx_handlers_drop; 1013 unsigned int rx_handlers_queued; 1014 unsigned int rx_handlers_drop_nullfunc; 1015 unsigned int rx_handlers_drop_defrag; 1016 unsigned int rx_handlers_drop_short; 1017 unsigned int tx_expand_skb_head; 1018 unsigned int tx_expand_skb_head_cloned; 1019 unsigned int rx_expand_skb_head; 1020 unsigned int rx_expand_skb_head2; 1021 unsigned int rx_handlers_fragments; 1022 unsigned int tx_status_drop; 1023 #define I802_DEBUG_INC(c) (c)++ 1024 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1025 #define I802_DEBUG_INC(c) do { } while (0) 1026 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1027 1028 1029 int total_ps_buffered; /* total number of all buffered unicast and 1030 * multicast packets for power saving stations 1031 */ 1032 1033 bool pspolling; 1034 bool offchannel_ps_enabled; 1035 /* 1036 * PS can only be enabled when we have exactly one managed 1037 * interface (and monitors) in PS, this then points there. 1038 */ 1039 struct ieee80211_sub_if_data *ps_sdata; 1040 struct work_struct dynamic_ps_enable_work; 1041 struct work_struct dynamic_ps_disable_work; 1042 struct timer_list dynamic_ps_timer; 1043 struct notifier_block network_latency_notifier; 1044 struct notifier_block ifa_notifier; 1045 1046 /* 1047 * The dynamic ps timeout configured from user space via WEXT - 1048 * this will override whatever chosen by mac80211 internally. 1049 */ 1050 int dynamic_ps_forced_timeout; 1051 int dynamic_ps_user_timeout; 1052 bool disable_dynamic_ps; 1053 1054 int user_power_level; /* in dBm */ 1055 int power_constr_level; /* in dBm */ 1056 1057 enum ieee80211_smps_mode smps_mode; 1058 1059 struct work_struct restart_work; 1060 1061 #ifdef CONFIG_MAC80211_DEBUGFS 1062 struct local_debugfsdentries { 1063 struct dentry *rcdir; 1064 struct dentry *keys; 1065 } debugfs; 1066 #endif 1067 1068 /* 1069 * Remain-on-channel support 1070 */ 1071 struct list_head roc_list; 1072 struct work_struct hw_roc_start, hw_roc_done; 1073 unsigned long hw_roc_start_time; 1074 1075 struct idr ack_status_frames; 1076 spinlock_t ack_status_lock; 1077 1078 /* dummy netdev for use w/ NAPI */ 1079 struct net_device napi_dev; 1080 1081 struct napi_struct napi; 1082 1083 /* virtual monitor interface */ 1084 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1085 }; 1086 1087 static inline struct ieee80211_sub_if_data * 1088 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1089 { 1090 return netdev_priv(dev); 1091 } 1092 1093 static inline struct ieee80211_sub_if_data * 1094 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1095 { 1096 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1097 } 1098 1099 /* this struct represents 802.11n's RA/TID combination */ 1100 struct ieee80211_ra_tid { 1101 u8 ra[ETH_ALEN]; 1102 u16 tid; 1103 }; 1104 1105 /* Parsed Information Elements */ 1106 struct ieee802_11_elems { 1107 u8 *ie_start; 1108 size_t total_len; 1109 1110 /* pointers to IEs */ 1111 u8 *ssid; 1112 u8 *supp_rates; 1113 u8 *fh_params; 1114 u8 *ds_params; 1115 u8 *cf_params; 1116 struct ieee80211_tim_ie *tim; 1117 u8 *ibss_params; 1118 u8 *challenge; 1119 u8 *wpa; 1120 u8 *rsn; 1121 u8 *erp_info; 1122 u8 *ext_supp_rates; 1123 u8 *wmm_info; 1124 u8 *wmm_param; 1125 struct ieee80211_ht_cap *ht_cap_elem; 1126 struct ieee80211_ht_operation *ht_operation; 1127 struct ieee80211_meshconf_ie *mesh_config; 1128 u8 *mesh_id; 1129 u8 *peering; 1130 u8 *preq; 1131 u8 *prep; 1132 u8 *perr; 1133 struct ieee80211_rann_ie *rann; 1134 u8 *ch_switch_elem; 1135 u8 *country_elem; 1136 u8 *pwr_constr_elem; 1137 u8 *quiet_elem; /* first quite element */ 1138 u8 *timeout_int; 1139 1140 /* length of them, respectively */ 1141 u8 ssid_len; 1142 u8 supp_rates_len; 1143 u8 fh_params_len; 1144 u8 ds_params_len; 1145 u8 cf_params_len; 1146 u8 tim_len; 1147 u8 ibss_params_len; 1148 u8 challenge_len; 1149 u8 wpa_len; 1150 u8 rsn_len; 1151 u8 erp_info_len; 1152 u8 ext_supp_rates_len; 1153 u8 wmm_info_len; 1154 u8 wmm_param_len; 1155 u8 mesh_id_len; 1156 u8 peering_len; 1157 u8 preq_len; 1158 u8 prep_len; 1159 u8 perr_len; 1160 u8 ch_switch_elem_len; 1161 u8 country_elem_len; 1162 u8 pwr_constr_elem_len; 1163 u8 quiet_elem_len; 1164 u8 num_of_quiet_elem; /* can be more the one */ 1165 u8 timeout_int_len; 1166 1167 /* whether a parse error occurred while retrieving these elements */ 1168 bool parse_error; 1169 }; 1170 1171 static inline struct ieee80211_local *hw_to_local( 1172 struct ieee80211_hw *hw) 1173 { 1174 return container_of(hw, struct ieee80211_local, hw); 1175 } 1176 1177 1178 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1179 { 1180 return ether_addr_equal(raddr, addr) || 1181 is_broadcast_ether_addr(raddr); 1182 } 1183 1184 1185 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1186 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1187 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1188 u32 changed); 1189 void ieee80211_configure_filter(struct ieee80211_local *local); 1190 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1191 1192 /* STA code */ 1193 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1194 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1195 struct cfg80211_auth_request *req); 1196 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1197 struct cfg80211_assoc_request *req); 1198 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1199 struct cfg80211_deauth_request *req); 1200 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1201 struct cfg80211_disassoc_request *req); 1202 void ieee80211_send_pspoll(struct ieee80211_local *local, 1203 struct ieee80211_sub_if_data *sdata); 1204 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1205 int ieee80211_max_network_latency(struct notifier_block *nb, 1206 unsigned long data, void *dummy); 1207 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1208 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1209 struct ieee80211_channel_sw_ie *sw_elem, 1210 struct ieee80211_bss *bss, 1211 u64 timestamp); 1212 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1213 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1214 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1215 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1216 struct sk_buff *skb); 1217 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1218 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1219 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1220 1221 /* IBSS code */ 1222 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1223 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1224 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1225 const u8 *bssid, const u8 *addr, u32 supp_rates); 1226 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1227 struct cfg80211_ibss_params *params); 1228 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1229 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1230 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1231 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1232 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1233 struct sk_buff *skb); 1234 1235 /* mesh code */ 1236 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1237 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1238 struct sk_buff *skb); 1239 1240 /* scan/BSS handling */ 1241 void ieee80211_scan_work(struct work_struct *work); 1242 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1243 const u8 *ssid, u8 ssid_len, 1244 struct ieee80211_channel *chan); 1245 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1246 struct cfg80211_scan_request *req); 1247 void ieee80211_scan_cancel(struct ieee80211_local *local); 1248 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1249 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1250 1251 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1252 struct ieee80211_bss * 1253 ieee80211_bss_info_update(struct ieee80211_local *local, 1254 struct ieee80211_rx_status *rx_status, 1255 struct ieee80211_mgmt *mgmt, 1256 size_t len, 1257 struct ieee802_11_elems *elems, 1258 struct ieee80211_channel *channel, 1259 bool beacon); 1260 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1261 struct ieee80211_bss *bss); 1262 1263 /* scheduled scan handling */ 1264 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1265 struct cfg80211_sched_scan_request *req); 1266 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1267 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1268 1269 /* off-channel helpers */ 1270 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1271 bool offchannel_ps_enable); 1272 void ieee80211_offchannel_return(struct ieee80211_local *local, 1273 bool offchannel_ps_disable); 1274 void ieee80211_roc_setup(struct ieee80211_local *local); 1275 void ieee80211_start_next_roc(struct ieee80211_local *local); 1276 void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata); 1277 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc); 1278 void ieee80211_sw_roc_work(struct work_struct *work); 1279 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc); 1280 1281 /* interface handling */ 1282 int ieee80211_iface_init(void); 1283 void ieee80211_iface_exit(void); 1284 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1285 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1286 struct vif_params *params); 1287 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1288 enum nl80211_iftype type); 1289 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1290 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1291 void ieee80211_recalc_idle(struct ieee80211_local *local); 1292 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1293 const int offset); 1294 1295 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1296 { 1297 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1298 } 1299 1300 /* tx handling */ 1301 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1302 void ieee80211_tx_pending(unsigned long data); 1303 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1304 struct net_device *dev); 1305 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1306 struct net_device *dev); 1307 1308 /* HT */ 1309 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1310 struct ieee80211_sta_ht_cap *ht_cap); 1311 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1312 struct ieee80211_supported_band *sband, 1313 struct ieee80211_ht_cap *ht_cap_ie, 1314 struct ieee80211_sta_ht_cap *ht_cap); 1315 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1316 const u8 *da, u16 tid, 1317 u16 initiator, u16 reason_code); 1318 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1319 enum ieee80211_smps_mode smps, const u8 *da, 1320 const u8 *bssid); 1321 void ieee80211_request_smps_work(struct work_struct *work); 1322 1323 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1324 u16 initiator, u16 reason, bool stop); 1325 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1326 u16 initiator, u16 reason, bool stop); 1327 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1328 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1329 struct sta_info *sta, 1330 struct ieee80211_mgmt *mgmt, size_t len); 1331 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1332 struct sta_info *sta, 1333 struct ieee80211_mgmt *mgmt, 1334 size_t len); 1335 void ieee80211_process_addba_request(struct ieee80211_local *local, 1336 struct sta_info *sta, 1337 struct ieee80211_mgmt *mgmt, 1338 size_t len); 1339 1340 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1341 enum ieee80211_back_parties initiator, 1342 bool tx); 1343 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1344 enum ieee80211_back_parties initiator, 1345 bool tx); 1346 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1347 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1348 void ieee80211_ba_session_work(struct work_struct *work); 1349 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1350 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1351 1352 /* Spectrum management */ 1353 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1354 struct ieee80211_mgmt *mgmt, 1355 size_t len); 1356 1357 /* Suspend/resume and hw reconfiguration */ 1358 int ieee80211_reconfig(struct ieee80211_local *local); 1359 void ieee80211_stop_device(struct ieee80211_local *local); 1360 1361 #ifdef CONFIG_PM 1362 int __ieee80211_suspend(struct ieee80211_hw *hw, 1363 struct cfg80211_wowlan *wowlan); 1364 1365 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1366 { 1367 struct ieee80211_local *local = hw_to_local(hw); 1368 1369 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1370 "%s: resume with hardware scan still in progress\n", 1371 wiphy_name(hw->wiphy)); 1372 1373 return ieee80211_reconfig(hw_to_local(hw)); 1374 } 1375 #else 1376 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1377 struct cfg80211_wowlan *wowlan) 1378 { 1379 return 0; 1380 } 1381 1382 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1383 { 1384 return 0; 1385 } 1386 #endif 1387 1388 /* utility functions/constants */ 1389 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1390 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1391 enum nl80211_iftype type); 1392 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1393 int rate, int erp, int short_preamble); 1394 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1395 struct ieee80211_hdr *hdr, const u8 *tsc, 1396 gfp_t gfp); 1397 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1398 bool bss_notify); 1399 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1400 1401 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1402 struct sk_buff *skb, int tid); 1403 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1404 struct sk_buff *skb) 1405 { 1406 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1407 ieee80211_tx_skb_tid(sdata, skb, 7); 1408 } 1409 1410 void ieee802_11_parse_elems(u8 *start, size_t len, 1411 struct ieee802_11_elems *elems); 1412 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1413 struct ieee802_11_elems *elems, 1414 u64 filter, u32 crc); 1415 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1416 enum ieee80211_band band); 1417 1418 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1419 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1420 void ieee80211_dynamic_ps_timer(unsigned long data); 1421 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1422 struct ieee80211_sub_if_data *sdata, 1423 int powersave); 1424 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1425 struct ieee80211_hdr *hdr); 1426 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1427 struct ieee80211_hdr *hdr, bool ack); 1428 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1429 1430 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1431 enum queue_stop_reason reason); 1432 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1433 enum queue_stop_reason reason); 1434 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1435 enum queue_stop_reason reason); 1436 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1437 enum queue_stop_reason reason); 1438 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1439 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1440 struct sk_buff *skb); 1441 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1442 struct sk_buff_head *skbs, 1443 void (*fn)(void *data), void *data); 1444 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1445 struct sk_buff_head *skbs) 1446 { 1447 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1448 } 1449 1450 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1451 u16 transaction, u16 auth_alg, 1452 u8 *extra, size_t extra_len, const u8 *bssid, 1453 const u8 *da, const u8 *key, u8 key_len, u8 key_idx); 1454 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1455 const u8 *ie, size_t ie_len, 1456 enum ieee80211_band band, u32 rate_mask, 1457 u8 channel); 1458 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1459 u8 *dst, u32 ratemask, 1460 const u8 *ssid, size_t ssid_len, 1461 const u8 *ie, size_t ie_len, 1462 bool directed); 1463 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1464 const u8 *ssid, size_t ssid_len, 1465 const u8 *ie, size_t ie_len, 1466 u32 ratemask, bool directed, bool no_cck); 1467 1468 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1469 const size_t supp_rates_len, 1470 const u8 *supp_rates); 1471 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1472 struct ieee802_11_elems *elems, 1473 enum ieee80211_band band, u32 *basic_rates); 1474 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1475 enum ieee80211_smps_mode smps_mode); 1476 void ieee80211_recalc_smps(struct ieee80211_local *local); 1477 1478 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1479 const u8 *ids, int n_ids, size_t offset); 1480 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1481 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1482 u16 cap); 1483 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1484 struct ieee80211_channel *channel, 1485 enum nl80211_channel_type channel_type, 1486 u16 prot_mode); 1487 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 1488 u32 cap); 1489 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 1490 struct sk_buff *skb, bool need_basic); 1491 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 1492 struct sk_buff *skb, bool need_basic); 1493 1494 /* channel management */ 1495 enum ieee80211_chan_mode { 1496 CHAN_MODE_UNDEFINED, 1497 CHAN_MODE_HOPPING, 1498 CHAN_MODE_FIXED, 1499 }; 1500 1501 enum ieee80211_chan_mode 1502 ieee80211_get_channel_mode(struct ieee80211_local *local, 1503 struct ieee80211_sub_if_data *ignore); 1504 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1505 struct ieee80211_sub_if_data *sdata, 1506 enum nl80211_channel_type chantype); 1507 enum nl80211_channel_type 1508 ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper); 1509 1510 #ifdef CONFIG_MAC80211_NOINLINE 1511 #define debug_noinline noinline 1512 #else 1513 #define debug_noinline 1514 #endif 1515 1516 #endif /* IEEE80211_I_H */ 1517