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 <net/ieee80211_radiotap.h> 28 #include <net/cfg80211.h> 29 #include <net/mac80211.h> 30 #include "key.h" 31 #include "sta_info.h" 32 33 struct ieee80211_local; 34 35 /* Maximum number of broadcast/multicast frames to buffer when some of the 36 * associated stations are using power saving. */ 37 #define AP_MAX_BC_BUFFER 128 38 39 /* Maximum number of frames buffered to all STAs, including multicast frames. 40 * Note: increasing this limit increases the potential memory requirement. Each 41 * frame can be up to about 2 kB long. */ 42 #define TOTAL_MAX_TX_BUFFER 512 43 44 /* Required encryption head and tailroom */ 45 #define IEEE80211_ENCRYPT_HEADROOM 8 46 #define IEEE80211_ENCRYPT_TAILROOM 18 47 48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 49 * reception of at least three fragmented frames. This limit can be increased 50 * by changing this define, at the cost of slower frame reassembly and 51 * increased memory use (about 2 kB of RAM per entry). */ 52 #define IEEE80211_FRAGMENT_MAX 4 53 54 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 55 56 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 57 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ 58 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ 59 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ 60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 61 62 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 63 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 64 65 struct ieee80211_fragment_entry { 66 unsigned long first_frag_time; 67 unsigned int seq; 68 unsigned int rx_queue; 69 unsigned int last_frag; 70 unsigned int extra_len; 71 struct sk_buff_head skb_list; 72 int ccmp; /* Whether fragments were encrypted with CCMP */ 73 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 74 }; 75 76 77 struct ieee80211_bss { 78 /* don't want to look up all the time */ 79 size_t ssid_len; 80 u8 ssid[IEEE80211_MAX_SSID_LEN]; 81 82 u8 dtim_period; 83 84 bool wmm_used; 85 bool uapsd_supported; 86 87 unsigned long last_probe_resp; 88 89 #ifdef CONFIG_MAC80211_MESH 90 u8 *mesh_id; 91 size_t mesh_id_len; 92 u8 *mesh_cfg; 93 #endif 94 95 #define IEEE80211_MAX_SUPP_RATES 32 96 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 97 size_t supp_rates_len; 98 99 /* 100 * During association, we save an ERP value from a probe response so 101 * that we can feed ERP info to the driver when handling the 102 * association completes. these fields probably won't be up-to-date 103 * otherwise, you probably don't want to use them. 104 */ 105 bool has_erp_value; 106 u8 erp_value; 107 }; 108 109 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 110 { 111 #ifdef CONFIG_MAC80211_MESH 112 return bss->mesh_cfg; 113 #endif 114 return NULL; 115 } 116 117 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 118 { 119 #ifdef CONFIG_MAC80211_MESH 120 return bss->mesh_id; 121 #endif 122 return NULL; 123 } 124 125 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 126 { 127 #ifdef CONFIG_MAC80211_MESH 128 return bss->mesh_id_len; 129 #endif 130 return 0; 131 } 132 133 134 typedef unsigned __bitwise__ ieee80211_tx_result; 135 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 136 #define TX_DROP ((__force ieee80211_tx_result) 1u) 137 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 138 139 #define IEEE80211_TX_FRAGMENTED BIT(0) 140 #define IEEE80211_TX_UNICAST BIT(1) 141 #define IEEE80211_TX_PS_BUFFERED BIT(2) 142 143 struct ieee80211_tx_data { 144 struct sk_buff *skb; 145 struct ieee80211_local *local; 146 struct ieee80211_sub_if_data *sdata; 147 struct sta_info *sta; 148 struct ieee80211_key *key; 149 150 struct ieee80211_channel *channel; 151 152 u16 ethertype; 153 unsigned int flags; 154 }; 155 156 157 typedef unsigned __bitwise__ ieee80211_rx_result; 158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 162 163 /** 164 * enum ieee80211_packet_rx_flags - packet RX flags 165 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 166 * (incl. multicast frames) 167 * @IEEE80211_RX_IN_SCAN: received while scanning 168 * @IEEE80211_RX_FRAGMENTED: fragmented frame 169 * @IEEE80211_RX_AMSDU: a-MSDU packet 170 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 171 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 172 * 173 * These are per-frame flags that are attached to a frame in the 174 * @rx_flags field of &struct ieee80211_rx_status. 175 */ 176 enum ieee80211_packet_rx_flags { 177 IEEE80211_RX_IN_SCAN = BIT(0), 178 IEEE80211_RX_RA_MATCH = BIT(1), 179 IEEE80211_RX_FRAGMENTED = BIT(2), 180 IEEE80211_RX_AMSDU = BIT(3), 181 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 182 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 183 }; 184 185 /** 186 * enum ieee80211_rx_flags - RX data flags 187 * 188 * @IEEE80211_RX_CMNTR: received on cooked monitor already 189 * 190 * These flags are used across handling multiple interfaces 191 * for a single frame. 192 */ 193 enum ieee80211_rx_flags { 194 IEEE80211_RX_CMNTR = BIT(0), 195 }; 196 197 struct ieee80211_rx_data { 198 struct sk_buff *skb; 199 struct ieee80211_local *local; 200 struct ieee80211_sub_if_data *sdata; 201 struct sta_info *sta; 202 struct ieee80211_key *key; 203 204 unsigned int flags; 205 206 /* 207 * Index into sequence numbers array, 0..16 208 * since the last (16) is used for non-QoS, 209 * will be 16 on non-QoS frames. 210 */ 211 int seqno_idx; 212 213 /* 214 * Index into the security IV/PN arrays, 0..16 215 * since the last (16) is used for CCMP-encrypted 216 * management frames, will be set to 16 on mgmt 217 * frames and 0 on non-QoS frames. 218 */ 219 int security_idx; 220 221 u32 tkip_iv32; 222 u16 tkip_iv16; 223 }; 224 225 struct beacon_data { 226 u8 *head, *tail; 227 int head_len, tail_len; 228 int dtim_period; 229 }; 230 231 struct ieee80211_if_ap { 232 struct beacon_data __rcu *beacon; 233 234 struct list_head vlans; 235 236 /* yes, this looks ugly, but guarantees that we can later use 237 * bitmap_empty :) 238 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 239 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 240 struct sk_buff_head ps_bc_buf; 241 atomic_t num_sta_ps; /* number of stations in PS mode */ 242 int dtim_count; 243 bool dtim_bc_mc; 244 }; 245 246 struct ieee80211_if_wds { 247 struct sta_info *sta; 248 u8 remote_addr[ETH_ALEN]; 249 }; 250 251 struct ieee80211_if_vlan { 252 struct list_head list; 253 254 /* used for all tx if the VLAN is configured to 4-addr mode */ 255 struct sta_info __rcu *sta; 256 }; 257 258 struct mesh_stats { 259 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 260 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 261 __u32 fwded_frames; /* Mesh total forwarded frames */ 262 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 263 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 264 atomic_t estab_plinks; 265 }; 266 267 #define PREQ_Q_F_START 0x1 268 #define PREQ_Q_F_REFRESH 0x2 269 struct mesh_preq_queue { 270 struct list_head list; 271 u8 dst[ETH_ALEN]; 272 u8 flags; 273 }; 274 275 enum ieee80211_work_type { 276 IEEE80211_WORK_ABORT, 277 IEEE80211_WORK_DIRECT_PROBE, 278 IEEE80211_WORK_AUTH, 279 IEEE80211_WORK_ASSOC_BEACON_WAIT, 280 IEEE80211_WORK_ASSOC, 281 IEEE80211_WORK_REMAIN_ON_CHANNEL, 282 IEEE80211_WORK_OFFCHANNEL_TX, 283 }; 284 285 /** 286 * enum work_done_result - indicates what to do after work was done 287 * 288 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 289 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 290 * should be requeued. 291 */ 292 enum work_done_result { 293 WORK_DONE_DESTROY, 294 WORK_DONE_REQUEUE, 295 }; 296 297 struct ieee80211_work { 298 struct list_head list; 299 300 struct rcu_head rcu_head; 301 302 struct ieee80211_sub_if_data *sdata; 303 304 enum work_done_result (*done)(struct ieee80211_work *wk, 305 struct sk_buff *skb); 306 307 struct ieee80211_channel *chan; 308 enum nl80211_channel_type chan_type; 309 310 unsigned long timeout; 311 enum ieee80211_work_type type; 312 313 u8 filter_ta[ETH_ALEN]; 314 315 bool started; 316 317 union { 318 struct { 319 int tries; 320 u16 algorithm, transaction; 321 u8 ssid[IEEE80211_MAX_SSID_LEN]; 322 u8 ssid_len; 323 u8 key[WLAN_KEY_LEN_WEP104]; 324 u8 key_len, key_idx; 325 bool privacy; 326 } probe_auth; 327 struct { 328 struct cfg80211_bss *bss; 329 const u8 *supp_rates; 330 const u8 *ht_information_ie; 331 enum ieee80211_smps_mode smps; 332 int tries; 333 u16 capability; 334 u8 prev_bssid[ETH_ALEN]; 335 u8 ssid[IEEE80211_MAX_SSID_LEN]; 336 u8 ssid_len; 337 u8 supp_rates_len; 338 bool wmm_used, use_11n, uapsd_used; 339 } assoc; 340 struct { 341 u32 duration; 342 } remain; 343 struct { 344 struct sk_buff *frame; 345 u32 wait; 346 } offchan_tx; 347 }; 348 349 int ie_len; 350 /* must be last */ 351 u8 ie[0]; 352 }; 353 354 /* flags used in struct ieee80211_if_managed.flags */ 355 enum ieee80211_sta_flags { 356 IEEE80211_STA_BEACON_POLL = BIT(0), 357 IEEE80211_STA_CONNECTION_POLL = BIT(1), 358 IEEE80211_STA_CONTROL_PORT = BIT(2), 359 IEEE80211_STA_DISABLE_11N = BIT(4), 360 IEEE80211_STA_CSA_RECEIVED = BIT(5), 361 IEEE80211_STA_MFP_ENABLED = BIT(6), 362 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 363 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 364 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 365 }; 366 367 struct ieee80211_if_managed { 368 struct timer_list timer; 369 struct timer_list conn_mon_timer; 370 struct timer_list bcn_mon_timer; 371 struct timer_list chswitch_timer; 372 struct work_struct monitor_work; 373 struct work_struct chswitch_work; 374 struct work_struct beacon_connection_loss_work; 375 376 unsigned long beacon_timeout; 377 unsigned long probe_timeout; 378 int probe_send_count; 379 bool nullfunc_failed; 380 381 struct mutex mtx; 382 struct cfg80211_bss *associated; 383 384 u8 bssid[ETH_ALEN]; 385 386 u16 aid; 387 388 unsigned long timers_running; /* used for quiesce/restart */ 389 bool powersave; /* powersave requested for this iface */ 390 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 391 ap_smps, /* smps mode AP thinks we're in */ 392 driver_smps_mode; /* smps mode request */ 393 394 struct work_struct request_smps_work; 395 396 unsigned int flags; 397 398 bool beacon_crc_valid; 399 u32 beacon_crc; 400 401 enum { 402 IEEE80211_MFP_DISABLED, 403 IEEE80211_MFP_OPTIONAL, 404 IEEE80211_MFP_REQUIRED 405 } mfp; /* management frame protection */ 406 407 int wmm_last_param_set; 408 409 u8 use_4addr; 410 411 /* Signal strength from the last Beacon frame in the current BSS. */ 412 int last_beacon_signal; 413 414 /* 415 * Weighted average of the signal strength from Beacon frames in the 416 * current BSS. This is in units of 1/16 of the signal unit to maintain 417 * accuracy and to speed up calculations, i.e., the value need to be 418 * divided by 16 to get the actual value. 419 */ 420 int ave_beacon_signal; 421 422 /* 423 * Number of Beacon frames used in ave_beacon_signal. This can be used 424 * to avoid generating less reliable cqm events that would be based 425 * only on couple of received frames. 426 */ 427 unsigned int count_beacon_signal; 428 429 /* 430 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 431 * that triggered a cqm event. 0 indicates that no event has been 432 * generated for the current association. 433 */ 434 int last_cqm_event_signal; 435 436 /* 437 * State variables for keeping track of RSSI of the AP currently 438 * connected to and informing driver when RSSI has gone 439 * below/above a certain threshold. 440 */ 441 int rssi_min_thold, rssi_max_thold; 442 int last_ave_beacon_signal; 443 }; 444 445 struct ieee80211_if_ibss { 446 struct timer_list timer; 447 448 struct mutex mtx; 449 450 unsigned long last_scan_completed; 451 452 u32 basic_rates; 453 454 bool timer_running; 455 456 bool fixed_bssid; 457 bool fixed_channel; 458 bool privacy; 459 460 u8 bssid[ETH_ALEN]; 461 u8 ssid[IEEE80211_MAX_SSID_LEN]; 462 u8 ssid_len, ie_len; 463 u8 *ie; 464 struct ieee80211_channel *channel; 465 466 unsigned long ibss_join_req; 467 /* probe response/beacon for IBSS */ 468 struct sk_buff __rcu *presp; 469 struct sk_buff *skb; 470 471 enum { 472 IEEE80211_IBSS_MLME_SEARCH, 473 IEEE80211_IBSS_MLME_JOINED, 474 } state; 475 }; 476 477 struct ieee80211_if_mesh { 478 struct timer_list housekeeping_timer; 479 struct timer_list mesh_path_timer; 480 struct timer_list mesh_path_root_timer; 481 482 unsigned long timers_running; 483 484 unsigned long wrkq_flags; 485 486 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 487 size_t mesh_id_len; 488 /* Active Path Selection Protocol Identifier */ 489 u8 mesh_pp_id; 490 /* Active Path Selection Metric Identifier */ 491 u8 mesh_pm_id; 492 /* Congestion Control Mode Identifier */ 493 u8 mesh_cc_id; 494 /* Synchronization Protocol Identifier */ 495 u8 mesh_sp_id; 496 /* Authentication Protocol Identifier */ 497 u8 mesh_auth_id; 498 /* Local mesh Sequence Number */ 499 u32 sn; 500 /* Last used PREQ ID */ 501 u32 preq_id; 502 atomic_t mpaths; 503 /* Timestamp of last SN update */ 504 unsigned long last_sn_update; 505 /* Timestamp of last SN sent */ 506 unsigned long last_preq; 507 struct mesh_rmc *rmc; 508 spinlock_t mesh_preq_queue_lock; 509 struct mesh_preq_queue preq_queue; 510 int preq_queue_len; 511 struct mesh_stats mshstats; 512 struct mesh_config mshcfg; 513 u32 mesh_seqnum; 514 bool accepting_plinks; 515 const u8 *ie; 516 u8 ie_len; 517 enum { 518 IEEE80211_MESH_SEC_NONE = 0x0, 519 IEEE80211_MESH_SEC_AUTHED = 0x1, 520 IEEE80211_MESH_SEC_SECURED = 0x2, 521 } security; 522 }; 523 524 #ifdef CONFIG_MAC80211_MESH 525 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 526 do { (msh)->mshstats.name++; } while (0) 527 #else 528 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 529 do { } while (0) 530 #endif 531 532 /** 533 * enum ieee80211_sub_if_data_flags - virtual interface flags 534 * 535 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 536 * @IEEE80211_SDATA_PROMISC: interface is promisc 537 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 538 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 539 * associated stations and deliver multicast frames both 540 * back to wireless media and to the local net stack. 541 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 542 */ 543 enum ieee80211_sub_if_data_flags { 544 IEEE80211_SDATA_ALLMULTI = BIT(0), 545 IEEE80211_SDATA_PROMISC = BIT(1), 546 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 547 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 548 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 549 }; 550 551 /** 552 * enum ieee80211_sdata_state_bits - virtual interface state bits 553 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 554 * mirrors netif_running() but is separate for interface type 555 * change handling while the interface is up 556 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 557 * mode, so queues are stopped 558 */ 559 enum ieee80211_sdata_state_bits { 560 SDATA_STATE_RUNNING, 561 SDATA_STATE_OFFCHANNEL, 562 }; 563 564 struct ieee80211_sub_if_data { 565 struct list_head list; 566 567 struct wireless_dev wdev; 568 569 /* keys */ 570 struct list_head key_list; 571 572 /* count for keys needing tailroom space allocation */ 573 int crypto_tx_tailroom_needed_cnt; 574 575 struct net_device *dev; 576 struct ieee80211_local *local; 577 578 unsigned int flags; 579 580 unsigned long state; 581 582 int drop_unencrypted; 583 584 char name[IFNAMSIZ]; 585 586 /* 587 * keep track of whether the HT opmode (stored in 588 * vif.bss_info.ht_operation_mode) is valid. 589 */ 590 bool ht_opmode_valid; 591 592 /* to detect idle changes */ 593 bool old_idle; 594 595 /* Fragment table for host-based reassembly */ 596 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 597 unsigned int fragment_next; 598 599 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 600 struct ieee80211_key __rcu *default_unicast_key; 601 struct ieee80211_key __rcu *default_multicast_key; 602 struct ieee80211_key __rcu *default_mgmt_key; 603 604 u16 sequence_number; 605 __be16 control_port_protocol; 606 bool control_port_no_encrypt; 607 608 struct work_struct work; 609 struct sk_buff_head skb_queue; 610 611 bool arp_filter_state; 612 613 /* 614 * AP this belongs to: self in AP mode and 615 * corresponding AP in VLAN mode, NULL for 616 * all others (might be needed later in IBSS) 617 */ 618 struct ieee80211_if_ap *bss; 619 620 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 621 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 622 623 union { 624 struct ieee80211_if_ap ap; 625 struct ieee80211_if_wds wds; 626 struct ieee80211_if_vlan vlan; 627 struct ieee80211_if_managed mgd; 628 struct ieee80211_if_ibss ibss; 629 struct ieee80211_if_mesh mesh; 630 u32 mntr_flags; 631 } u; 632 633 #ifdef CONFIG_MAC80211_DEBUGFS 634 struct { 635 struct dentry *dir; 636 struct dentry *subdir_stations; 637 struct dentry *default_unicast_key; 638 struct dentry *default_multicast_key; 639 struct dentry *default_mgmt_key; 640 } debugfs; 641 #endif 642 /* must be last, dynamically sized area in this! */ 643 struct ieee80211_vif vif; 644 }; 645 646 static inline 647 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 648 { 649 return container_of(p, struct ieee80211_sub_if_data, vif); 650 } 651 652 enum sdata_queue_type { 653 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 654 IEEE80211_SDATA_QUEUE_AGG_START = 1, 655 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 656 }; 657 658 enum { 659 IEEE80211_RX_MSG = 1, 660 IEEE80211_TX_STATUS_MSG = 2, 661 }; 662 663 enum queue_stop_reason { 664 IEEE80211_QUEUE_STOP_REASON_DRIVER, 665 IEEE80211_QUEUE_STOP_REASON_PS, 666 IEEE80211_QUEUE_STOP_REASON_CSA, 667 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 668 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 669 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 670 }; 671 672 #ifdef CONFIG_MAC80211_LEDS 673 struct tpt_led_trigger { 674 struct led_trigger trig; 675 char name[32]; 676 const struct ieee80211_tpt_blink *blink_table; 677 unsigned int blink_table_len; 678 struct timer_list timer; 679 unsigned long prev_traffic; 680 unsigned long tx_bytes, rx_bytes; 681 unsigned int active, want; 682 bool running; 683 }; 684 #endif 685 686 /** 687 * mac80211 scan flags - currently active scan mode 688 * 689 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 690 * well be on the operating channel 691 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 692 * determine if we are on the operating channel or not 693 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 694 * that the scan completed. 695 * @SCAN_ABORTED: Set for our scan work function when the driver reported 696 * a scan complete for an aborted scan. 697 */ 698 enum { 699 SCAN_SW_SCANNING, 700 SCAN_HW_SCANNING, 701 SCAN_COMPLETED, 702 SCAN_ABORTED, 703 }; 704 705 /** 706 * enum mac80211_scan_state - scan state machine states 707 * 708 * @SCAN_DECISION: Main entry point to the scan state machine, this state 709 * determines if we should keep on scanning or switch back to the 710 * operating channel 711 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 712 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 713 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 714 * about us leaving the channel and stop all associated STA interfaces 715 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 716 * AP about us being back and restart all associated STA interfaces 717 */ 718 enum mac80211_scan_state { 719 SCAN_DECISION, 720 SCAN_SET_CHANNEL, 721 SCAN_SEND_PROBE, 722 SCAN_LEAVE_OPER_CHANNEL, 723 SCAN_ENTER_OPER_CHANNEL, 724 }; 725 726 struct ieee80211_local { 727 /* embed the driver visible part. 728 * don't cast (use the static inlines below), but we keep 729 * it first anyway so they become a no-op */ 730 struct ieee80211_hw hw; 731 732 const struct ieee80211_ops *ops; 733 734 /* 735 * work stuff, potentially off-channel (in the future) 736 */ 737 struct list_head work_list; 738 struct timer_list work_timer; 739 struct work_struct work_work; 740 struct sk_buff_head work_skb_queue; 741 742 /* 743 * private workqueue to mac80211. mac80211 makes this accessible 744 * via ieee80211_queue_work() 745 */ 746 struct workqueue_struct *workqueue; 747 748 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 749 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 750 spinlock_t queue_stop_reason_lock; 751 752 int open_count; 753 int monitors, cooked_mntrs; 754 /* number of interfaces with corresponding FIF_ flags */ 755 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 756 fif_probe_req; 757 int probe_req_reg; 758 unsigned int filter_flags; /* FIF_* */ 759 760 bool wiphy_ciphers_allocated; 761 762 /* protects the aggregated multicast list and filter calls */ 763 spinlock_t filter_lock; 764 765 /* used for uploading changed mc list */ 766 struct work_struct reconfig_filter; 767 768 /* used to reconfigure hardware SM PS */ 769 struct work_struct recalc_smps; 770 771 /* aggregated multicast list */ 772 struct netdev_hw_addr_list mc_list; 773 774 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 775 776 /* 777 * suspended is true if we finished all the suspend _and_ we have 778 * not yet come up from resume. This is to be used by mac80211 779 * to ensure driver sanity during suspend and mac80211's own 780 * sanity. It can eventually be used for WoW as well. 781 */ 782 bool suspended; 783 784 /* 785 * Resuming is true while suspended, but when we're reprogramming the 786 * hardware -- at that time it's allowed to use ieee80211_queue_work() 787 * again even though some other parts of the stack are still suspended 788 * and we still drop received frames to avoid waking the stack. 789 */ 790 bool resuming; 791 792 /* 793 * quiescing is true during the suspend process _only_ to 794 * ease timer cancelling etc. 795 */ 796 bool quiescing; 797 798 /* device is started */ 799 bool started; 800 801 /* wowlan is enabled -- don't reconfig on resume */ 802 bool wowlan; 803 804 int tx_headroom; /* required headroom for hardware/radiotap */ 805 806 /* Tasklet and skb queue to process calls from IRQ mode. All frames 807 * added to skb_queue will be processed, but frames in 808 * skb_queue_unreliable may be dropped if the total length of these 809 * queues increases over the limit. */ 810 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 811 struct tasklet_struct tasklet; 812 struct sk_buff_head skb_queue; 813 struct sk_buff_head skb_queue_unreliable; 814 815 /* 816 * Internal FIFO queue which is shared between multiple rx path 817 * stages. Its main task is to provide a serialization mechanism, 818 * so all rx handlers can enjoy having exclusive access to their 819 * private data structures. 820 */ 821 struct sk_buff_head rx_skb_queue; 822 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 823 824 /* Station data */ 825 /* 826 * The mutex only protects the list and counter, 827 * reads are done in RCU. 828 * Additionally, the lock protects the hash table, 829 * the pending list and each BSS's TIM bitmap. 830 */ 831 struct mutex sta_mtx; 832 spinlock_t sta_lock; 833 unsigned long num_sta; 834 struct list_head sta_list, sta_pending_list; 835 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 836 struct timer_list sta_cleanup; 837 struct work_struct sta_finish_work; 838 int sta_generation; 839 840 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 841 struct tasklet_struct tx_pending_tasklet; 842 843 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 844 845 /* number of interfaces with corresponding IFF_ flags */ 846 atomic_t iff_allmultis, iff_promiscs; 847 848 struct rate_control_ref *rate_ctrl; 849 850 struct crypto_cipher *wep_tx_tfm; 851 struct crypto_cipher *wep_rx_tfm; 852 u32 wep_iv; 853 854 /* see iface.c */ 855 struct list_head interfaces; 856 struct mutex iflist_mtx; 857 858 /* 859 * Key mutex, protects sdata's key_list and sta_info's 860 * key pointers (write access, they're RCU.) 861 */ 862 struct mutex key_mtx; 863 864 /* mutex for scan and work locking */ 865 struct mutex mtx; 866 867 /* Scanning and BSS list */ 868 unsigned long scanning; 869 struct cfg80211_ssid scan_ssid; 870 struct cfg80211_scan_request *int_scan_req; 871 struct cfg80211_scan_request *scan_req, *hw_scan_req; 872 struct ieee80211_channel *scan_channel; 873 enum ieee80211_band hw_scan_band; 874 int scan_channel_idx; 875 int scan_ies_len; 876 877 bool sched_scanning; 878 struct ieee80211_sched_scan_ies sched_scan_ies; 879 struct work_struct sched_scan_stopped_work; 880 881 unsigned long leave_oper_channel_time; 882 enum mac80211_scan_state next_scan_state; 883 struct delayed_work scan_work; 884 struct ieee80211_sub_if_data *scan_sdata; 885 enum nl80211_channel_type _oper_channel_type; 886 struct ieee80211_channel *oper_channel, *csa_channel; 887 888 /* Temporary remain-on-channel for off-channel operations */ 889 struct ieee80211_channel *tmp_channel; 890 enum nl80211_channel_type tmp_channel_type; 891 892 /* SNMP counters */ 893 /* dot11CountersTable */ 894 u32 dot11TransmittedFragmentCount; 895 u32 dot11MulticastTransmittedFrameCount; 896 u32 dot11FailedCount; 897 u32 dot11RetryCount; 898 u32 dot11MultipleRetryCount; 899 u32 dot11FrameDuplicateCount; 900 u32 dot11ReceivedFragmentCount; 901 u32 dot11MulticastReceivedFrameCount; 902 u32 dot11TransmittedFrameCount; 903 904 #ifdef CONFIG_MAC80211_LEDS 905 int tx_led_counter, rx_led_counter; 906 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 907 struct tpt_led_trigger *tpt_led_trigger; 908 char tx_led_name[32], rx_led_name[32], 909 assoc_led_name[32], radio_led_name[32]; 910 #endif 911 912 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 913 /* TX/RX handler statistics */ 914 unsigned int tx_handlers_drop; 915 unsigned int tx_handlers_queued; 916 unsigned int tx_handlers_drop_unencrypted; 917 unsigned int tx_handlers_drop_fragment; 918 unsigned int tx_handlers_drop_wep; 919 unsigned int tx_handlers_drop_not_assoc; 920 unsigned int tx_handlers_drop_unauth_port; 921 unsigned int rx_handlers_drop; 922 unsigned int rx_handlers_queued; 923 unsigned int rx_handlers_drop_nullfunc; 924 unsigned int rx_handlers_drop_defrag; 925 unsigned int rx_handlers_drop_short; 926 unsigned int rx_handlers_drop_passive_scan; 927 unsigned int tx_expand_skb_head; 928 unsigned int tx_expand_skb_head_cloned; 929 unsigned int rx_expand_skb_head; 930 unsigned int rx_expand_skb_head2; 931 unsigned int rx_handlers_fragments; 932 unsigned int tx_status_drop; 933 #define I802_DEBUG_INC(c) (c)++ 934 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 935 #define I802_DEBUG_INC(c) do { } while (0) 936 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 937 938 939 int total_ps_buffered; /* total number of all buffered unicast and 940 * multicast packets for power saving stations 941 */ 942 int wifi_wme_noack_test; 943 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 944 945 /* 946 * Bitmask of enabled u-apsd queues, 947 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 948 * to take effect. 949 */ 950 unsigned int uapsd_queues; 951 952 /* 953 * Maximum number of buffered frames AP can deliver during a 954 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 955 * Needs a new association to take effect. 956 */ 957 unsigned int uapsd_max_sp_len; 958 959 bool pspolling; 960 bool offchannel_ps_enabled; 961 /* 962 * PS can only be enabled when we have exactly one managed 963 * interface (and monitors) in PS, this then points there. 964 */ 965 struct ieee80211_sub_if_data *ps_sdata; 966 struct work_struct dynamic_ps_enable_work; 967 struct work_struct dynamic_ps_disable_work; 968 struct timer_list dynamic_ps_timer; 969 struct notifier_block network_latency_notifier; 970 struct notifier_block ifa_notifier; 971 972 /* 973 * The dynamic ps timeout configured from user space via WEXT - 974 * this will override whatever chosen by mac80211 internally. 975 */ 976 int dynamic_ps_forced_timeout; 977 int dynamic_ps_user_timeout; 978 bool disable_dynamic_ps; 979 980 int user_power_level; /* in dBm */ 981 int power_constr_level; /* in dBm */ 982 983 enum ieee80211_smps_mode smps_mode; 984 985 struct work_struct restart_work; 986 987 #ifdef CONFIG_MAC80211_DEBUGFS 988 struct local_debugfsdentries { 989 struct dentry *rcdir; 990 struct dentry *keys; 991 } debugfs; 992 #endif 993 994 struct ieee80211_channel *hw_roc_channel; 995 struct net_device *hw_roc_dev; 996 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 997 struct work_struct hw_roc_start, hw_roc_done; 998 enum nl80211_channel_type hw_roc_channel_type; 999 unsigned int hw_roc_duration; 1000 u32 hw_roc_cookie; 1001 bool hw_roc_for_tx; 1002 unsigned long hw_offchan_tx_cookie; 1003 1004 /* dummy netdev for use w/ NAPI */ 1005 struct net_device napi_dev; 1006 1007 struct napi_struct napi; 1008 }; 1009 1010 static inline struct ieee80211_sub_if_data * 1011 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1012 { 1013 return netdev_priv(dev); 1014 } 1015 1016 /* this struct represents 802.11n's RA/TID combination */ 1017 struct ieee80211_ra_tid { 1018 u8 ra[ETH_ALEN]; 1019 u16 tid; 1020 }; 1021 1022 /* Parsed Information Elements */ 1023 struct ieee802_11_elems { 1024 u8 *ie_start; 1025 size_t total_len; 1026 1027 /* pointers to IEs */ 1028 u8 *ssid; 1029 u8 *supp_rates; 1030 u8 *fh_params; 1031 u8 *ds_params; 1032 u8 *cf_params; 1033 struct ieee80211_tim_ie *tim; 1034 u8 *ibss_params; 1035 u8 *challenge; 1036 u8 *wpa; 1037 u8 *rsn; 1038 u8 *erp_info; 1039 u8 *ext_supp_rates; 1040 u8 *wmm_info; 1041 u8 *wmm_param; 1042 struct ieee80211_ht_cap *ht_cap_elem; 1043 struct ieee80211_ht_info *ht_info_elem; 1044 struct ieee80211_meshconf_ie *mesh_config; 1045 u8 *mesh_id; 1046 u8 *peer_link; 1047 u8 *preq; 1048 u8 *prep; 1049 u8 *perr; 1050 struct ieee80211_rann_ie *rann; 1051 u8 *ch_switch_elem; 1052 u8 *country_elem; 1053 u8 *pwr_constr_elem; 1054 u8 *quiet_elem; /* first quite element */ 1055 u8 *timeout_int; 1056 1057 /* length of them, respectively */ 1058 u8 ssid_len; 1059 u8 supp_rates_len; 1060 u8 fh_params_len; 1061 u8 ds_params_len; 1062 u8 cf_params_len; 1063 u8 tim_len; 1064 u8 ibss_params_len; 1065 u8 challenge_len; 1066 u8 wpa_len; 1067 u8 rsn_len; 1068 u8 erp_info_len; 1069 u8 ext_supp_rates_len; 1070 u8 wmm_info_len; 1071 u8 wmm_param_len; 1072 u8 mesh_id_len; 1073 u8 peer_link_len; 1074 u8 preq_len; 1075 u8 prep_len; 1076 u8 perr_len; 1077 u8 ch_switch_elem_len; 1078 u8 country_elem_len; 1079 u8 pwr_constr_elem_len; 1080 u8 quiet_elem_len; 1081 u8 num_of_quiet_elem; /* can be more the one */ 1082 u8 timeout_int_len; 1083 }; 1084 1085 static inline struct ieee80211_local *hw_to_local( 1086 struct ieee80211_hw *hw) 1087 { 1088 return container_of(hw, struct ieee80211_local, hw); 1089 } 1090 1091 static inline struct ieee80211_hw *local_to_hw( 1092 struct ieee80211_local *local) 1093 { 1094 return &local->hw; 1095 } 1096 1097 1098 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1099 { 1100 return compare_ether_addr(raddr, addr) == 0 || 1101 is_broadcast_ether_addr(raddr); 1102 } 1103 1104 1105 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1106 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1107 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1108 u32 changed); 1109 void ieee80211_configure_filter(struct ieee80211_local *local); 1110 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1111 1112 /* STA code */ 1113 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1114 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1115 struct cfg80211_auth_request *req); 1116 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1117 struct cfg80211_assoc_request *req); 1118 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1119 struct cfg80211_deauth_request *req, 1120 void *cookie); 1121 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1122 struct cfg80211_disassoc_request *req, 1123 void *cookie); 1124 void ieee80211_send_pspoll(struct ieee80211_local *local, 1125 struct ieee80211_sub_if_data *sdata); 1126 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1127 int ieee80211_max_network_latency(struct notifier_block *nb, 1128 unsigned long data, void *dummy); 1129 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1130 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1131 struct ieee80211_channel_sw_ie *sw_elem, 1132 struct ieee80211_bss *bss, 1133 u64 timestamp); 1134 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1135 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1136 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1137 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1138 struct sk_buff *skb); 1139 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1140 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1141 1142 /* IBSS code */ 1143 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1144 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1145 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1146 u8 *bssid, u8 *addr, u32 supp_rates, 1147 gfp_t gfp); 1148 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1149 struct cfg80211_ibss_params *params); 1150 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1151 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1152 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1153 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1154 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1155 struct sk_buff *skb); 1156 1157 /* mesh code */ 1158 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1159 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1160 struct sk_buff *skb); 1161 1162 /* scan/BSS handling */ 1163 void ieee80211_scan_work(struct work_struct *work); 1164 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1165 const u8 *ssid, u8 ssid_len, 1166 struct ieee80211_channel *chan); 1167 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1168 struct cfg80211_scan_request *req); 1169 void ieee80211_scan_cancel(struct ieee80211_local *local); 1170 ieee80211_rx_result 1171 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1172 1173 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1174 struct ieee80211_bss * 1175 ieee80211_bss_info_update(struct ieee80211_local *local, 1176 struct ieee80211_rx_status *rx_status, 1177 struct ieee80211_mgmt *mgmt, 1178 size_t len, 1179 struct ieee802_11_elems *elems, 1180 struct ieee80211_channel *channel, 1181 bool beacon); 1182 struct ieee80211_bss * 1183 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1184 u8 *ssid, u8 ssid_len); 1185 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1186 struct ieee80211_bss *bss); 1187 1188 /* scheduled scan handling */ 1189 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1190 struct cfg80211_sched_scan_request *req); 1191 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1192 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1193 1194 /* off-channel helpers */ 1195 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); 1196 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, 1197 bool tell_ap); 1198 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1199 bool offchannel_ps_enable); 1200 void ieee80211_offchannel_return(struct ieee80211_local *local, 1201 bool enable_beaconing, 1202 bool offchannel_ps_disable); 1203 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1204 1205 /* interface handling */ 1206 int ieee80211_iface_init(void); 1207 void ieee80211_iface_exit(void); 1208 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1209 struct net_device **new_dev, enum nl80211_iftype type, 1210 struct vif_params *params); 1211 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1212 enum nl80211_iftype type); 1213 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1214 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1215 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1216 void ieee80211_recalc_idle(struct ieee80211_local *local); 1217 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1218 const int offset); 1219 1220 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1221 { 1222 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1223 } 1224 1225 /* tx handling */ 1226 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1227 void ieee80211_tx_pending(unsigned long data); 1228 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1229 struct net_device *dev); 1230 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1231 struct net_device *dev); 1232 1233 /* 1234 * radiotap header for status frames 1235 */ 1236 struct ieee80211_tx_status_rtap_hdr { 1237 struct ieee80211_radiotap_header hdr; 1238 u8 rate; 1239 u8 padding_for_rate; 1240 __le16 tx_flags; 1241 u8 data_retries; 1242 } __packed; 1243 1244 1245 /* HT */ 1246 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1247 struct ieee80211_ht_cap *ht_cap_ie, 1248 struct ieee80211_sta_ht_cap *ht_cap); 1249 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1250 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1251 const u8 *da, u16 tid, 1252 u16 initiator, u16 reason_code); 1253 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1254 enum ieee80211_smps_mode smps, const u8 *da, 1255 const u8 *bssid); 1256 void ieee80211_request_smps_work(struct work_struct *work); 1257 1258 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1259 u16 initiator, u16 reason, bool stop); 1260 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1261 u16 initiator, u16 reason, bool stop); 1262 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1263 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1264 struct sta_info *sta, 1265 struct ieee80211_mgmt *mgmt, size_t len); 1266 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1267 struct sta_info *sta, 1268 struct ieee80211_mgmt *mgmt, 1269 size_t len); 1270 void ieee80211_process_addba_request(struct ieee80211_local *local, 1271 struct sta_info *sta, 1272 struct ieee80211_mgmt *mgmt, 1273 size_t len); 1274 1275 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1276 enum ieee80211_back_parties initiator, 1277 bool tx); 1278 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1279 enum ieee80211_back_parties initiator, 1280 bool tx); 1281 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1282 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1283 void ieee80211_ba_session_work(struct work_struct *work); 1284 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1285 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1286 1287 /* Spectrum management */ 1288 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1289 struct ieee80211_mgmt *mgmt, 1290 size_t len); 1291 1292 /* Suspend/resume and hw reconfiguration */ 1293 int ieee80211_reconfig(struct ieee80211_local *local); 1294 void ieee80211_stop_device(struct ieee80211_local *local); 1295 1296 #ifdef CONFIG_PM 1297 int __ieee80211_suspend(struct ieee80211_hw *hw, 1298 struct cfg80211_wowlan *wowlan); 1299 1300 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1301 { 1302 struct ieee80211_local *local = hw_to_local(hw); 1303 1304 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1305 "%s: resume with hardware scan still in progress\n", 1306 wiphy_name(hw->wiphy)); 1307 1308 return ieee80211_reconfig(hw_to_local(hw)); 1309 } 1310 #else 1311 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1312 struct cfg80211_wowlan *wowlan) 1313 { 1314 return 0; 1315 } 1316 1317 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1318 { 1319 return 0; 1320 } 1321 #endif 1322 1323 /* utility functions/constants */ 1324 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1325 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1326 enum nl80211_iftype type); 1327 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1328 int rate, int erp, int short_preamble); 1329 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1330 struct ieee80211_hdr *hdr, const u8 *tsc, 1331 gfp_t gfp); 1332 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1333 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1334 void ieee802_11_parse_elems(u8 *start, size_t len, 1335 struct ieee802_11_elems *elems); 1336 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1337 struct ieee802_11_elems *elems, 1338 u64 filter, u32 crc); 1339 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1340 enum ieee80211_band band); 1341 1342 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1343 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1344 void ieee80211_dynamic_ps_timer(unsigned long data); 1345 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1346 struct ieee80211_sub_if_data *sdata, 1347 int powersave); 1348 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1349 struct ieee80211_hdr *hdr); 1350 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1351 struct ieee80211_hdr *hdr, bool ack); 1352 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1353 1354 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1355 enum queue_stop_reason reason); 1356 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1357 enum queue_stop_reason reason); 1358 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1359 enum queue_stop_reason reason); 1360 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1361 enum queue_stop_reason reason); 1362 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1363 struct sk_buff *skb); 1364 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1365 struct sk_buff_head *skbs); 1366 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1367 struct sk_buff_head *skbs, 1368 void (*fn)(void *data), void *data); 1369 1370 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1371 u16 transaction, u16 auth_alg, 1372 u8 *extra, size_t extra_len, const u8 *bssid, 1373 const u8 *key, u8 key_len, u8 key_idx); 1374 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1375 const u8 *ie, size_t ie_len, 1376 enum ieee80211_band band, u32 rate_mask, 1377 u8 channel); 1378 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1379 u8 *dst, 1380 const u8 *ssid, size_t ssid_len, 1381 const u8 *ie, size_t ie_len, 1382 bool directed); 1383 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1384 const u8 *ssid, size_t ssid_len, 1385 const u8 *ie, size_t ie_len, 1386 bool directed); 1387 1388 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1389 const size_t supp_rates_len, 1390 const u8 *supp_rates); 1391 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1392 struct ieee802_11_elems *elems, 1393 enum ieee80211_band band); 1394 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1395 enum ieee80211_smps_mode smps_mode); 1396 void ieee80211_recalc_smps(struct ieee80211_local *local); 1397 1398 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1399 const u8 *ids, int n_ids, size_t offset); 1400 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1401 1402 /* internal work items */ 1403 void ieee80211_work_init(struct ieee80211_local *local); 1404 void ieee80211_add_work(struct ieee80211_work *wk); 1405 void free_work(struct ieee80211_work *wk); 1406 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1407 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1408 struct sk_buff *skb); 1409 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1410 struct ieee80211_channel *chan, 1411 enum nl80211_channel_type channel_type, 1412 unsigned int duration, u64 *cookie); 1413 int ieee80211_wk_cancel_remain_on_channel( 1414 struct ieee80211_sub_if_data *sdata, u64 cookie); 1415 1416 /* channel management */ 1417 enum ieee80211_chan_mode { 1418 CHAN_MODE_UNDEFINED, 1419 CHAN_MODE_HOPPING, 1420 CHAN_MODE_FIXED, 1421 }; 1422 1423 enum ieee80211_chan_mode 1424 ieee80211_get_channel_mode(struct ieee80211_local *local, 1425 struct ieee80211_sub_if_data *ignore); 1426 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1427 struct ieee80211_sub_if_data *sdata, 1428 enum nl80211_channel_type chantype); 1429 1430 #ifdef CONFIG_MAC80211_NOINLINE 1431 #define debug_noinline noinline 1432 #else 1433 #define debug_noinline 1434 #endif 1435 1436 #endif /* IEEE80211_I_H */ 1437