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 bool synced; 327 } probe_auth; 328 struct { 329 struct cfg80211_bss *bss; 330 const u8 *supp_rates; 331 const u8 *ht_information_ie; 332 enum ieee80211_smps_mode smps; 333 int tries; 334 u16 capability; 335 u8 prev_bssid[ETH_ALEN]; 336 u8 ssid[IEEE80211_MAX_SSID_LEN]; 337 u8 ssid_len; 338 u8 supp_rates_len; 339 bool wmm_used, use_11n, uapsd_used; 340 bool synced; 341 } assoc; 342 struct { 343 u32 duration; 344 } remain; 345 struct { 346 struct sk_buff *frame; 347 u32 wait; 348 } offchan_tx; 349 }; 350 351 int ie_len; 352 /* must be last */ 353 u8 ie[0]; 354 }; 355 356 /* flags used in struct ieee80211_if_managed.flags */ 357 enum ieee80211_sta_flags { 358 IEEE80211_STA_BEACON_POLL = BIT(0), 359 IEEE80211_STA_CONNECTION_POLL = BIT(1), 360 IEEE80211_STA_CONTROL_PORT = BIT(2), 361 IEEE80211_STA_DISABLE_11N = BIT(4), 362 IEEE80211_STA_CSA_RECEIVED = BIT(5), 363 IEEE80211_STA_MFP_ENABLED = BIT(6), 364 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 365 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 366 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 367 }; 368 369 struct ieee80211_if_managed { 370 struct timer_list timer; 371 struct timer_list conn_mon_timer; 372 struct timer_list bcn_mon_timer; 373 struct timer_list chswitch_timer; 374 struct work_struct monitor_work; 375 struct work_struct chswitch_work; 376 struct work_struct beacon_connection_loss_work; 377 378 unsigned long beacon_timeout; 379 unsigned long probe_timeout; 380 int probe_send_count; 381 bool nullfunc_failed; 382 383 struct mutex mtx; 384 struct cfg80211_bss *associated; 385 386 u8 bssid[ETH_ALEN]; 387 388 u16 aid; 389 390 unsigned long timers_running; /* used for quiesce/restart */ 391 bool powersave; /* powersave requested for this iface */ 392 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 393 ap_smps, /* smps mode AP thinks we're in */ 394 driver_smps_mode; /* smps mode request */ 395 396 struct work_struct request_smps_work; 397 398 unsigned int flags; 399 400 bool beacon_crc_valid; 401 u32 beacon_crc; 402 403 enum { 404 IEEE80211_MFP_DISABLED, 405 IEEE80211_MFP_OPTIONAL, 406 IEEE80211_MFP_REQUIRED 407 } mfp; /* management frame protection */ 408 409 int wmm_last_param_set; 410 411 u8 use_4addr; 412 413 /* Signal strength from the last Beacon frame in the current BSS. */ 414 int last_beacon_signal; 415 416 /* 417 * Weighted average of the signal strength from Beacon frames in the 418 * current BSS. This is in units of 1/16 of the signal unit to maintain 419 * accuracy and to speed up calculations, i.e., the value need to be 420 * divided by 16 to get the actual value. 421 */ 422 int ave_beacon_signal; 423 424 /* 425 * Number of Beacon frames used in ave_beacon_signal. This can be used 426 * to avoid generating less reliable cqm events that would be based 427 * only on couple of received frames. 428 */ 429 unsigned int count_beacon_signal; 430 431 /* 432 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 433 * that triggered a cqm event. 0 indicates that no event has been 434 * generated for the current association. 435 */ 436 int last_cqm_event_signal; 437 438 /* 439 * State variables for keeping track of RSSI of the AP currently 440 * connected to and informing driver when RSSI has gone 441 * below/above a certain threshold. 442 */ 443 int rssi_min_thold, rssi_max_thold; 444 int last_ave_beacon_signal; 445 }; 446 447 struct ieee80211_if_ibss { 448 struct timer_list timer; 449 450 struct mutex mtx; 451 452 unsigned long last_scan_completed; 453 454 u32 basic_rates; 455 456 bool timer_running; 457 458 bool fixed_bssid; 459 bool fixed_channel; 460 bool privacy; 461 462 u8 bssid[ETH_ALEN]; 463 u8 ssid[IEEE80211_MAX_SSID_LEN]; 464 u8 ssid_len, ie_len; 465 u8 *ie; 466 struct ieee80211_channel *channel; 467 468 unsigned long ibss_join_req; 469 /* probe response/beacon for IBSS */ 470 struct sk_buff __rcu *presp; 471 struct sk_buff *skb; 472 473 enum { 474 IEEE80211_IBSS_MLME_SEARCH, 475 IEEE80211_IBSS_MLME_JOINED, 476 } state; 477 }; 478 479 struct ieee80211_if_mesh { 480 struct timer_list housekeeping_timer; 481 struct timer_list mesh_path_timer; 482 struct timer_list mesh_path_root_timer; 483 484 unsigned long timers_running; 485 486 unsigned long wrkq_flags; 487 488 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 489 size_t mesh_id_len; 490 /* Active Path Selection Protocol Identifier */ 491 u8 mesh_pp_id; 492 /* Active Path Selection Metric Identifier */ 493 u8 mesh_pm_id; 494 /* Congestion Control Mode Identifier */ 495 u8 mesh_cc_id; 496 /* Synchronization Protocol Identifier */ 497 u8 mesh_sp_id; 498 /* Authentication Protocol Identifier */ 499 u8 mesh_auth_id; 500 /* Local mesh Sequence Number */ 501 u32 sn; 502 /* Last used PREQ ID */ 503 u32 preq_id; 504 atomic_t mpaths; 505 /* Timestamp of last SN update */ 506 unsigned long last_sn_update; 507 /* Timestamp of last SN sent */ 508 unsigned long last_preq; 509 struct mesh_rmc *rmc; 510 spinlock_t mesh_preq_queue_lock; 511 struct mesh_preq_queue preq_queue; 512 int preq_queue_len; 513 struct mesh_stats mshstats; 514 struct mesh_config mshcfg; 515 u32 mesh_seqnum; 516 bool accepting_plinks; 517 const u8 *ie; 518 u8 ie_len; 519 enum { 520 IEEE80211_MESH_SEC_NONE = 0x0, 521 IEEE80211_MESH_SEC_AUTHED = 0x1, 522 IEEE80211_MESH_SEC_SECURED = 0x2, 523 } security; 524 }; 525 526 #ifdef CONFIG_MAC80211_MESH 527 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 528 do { (msh)->mshstats.name++; } while (0) 529 #else 530 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 531 do { } while (0) 532 #endif 533 534 /** 535 * enum ieee80211_sub_if_data_flags - virtual interface flags 536 * 537 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 538 * @IEEE80211_SDATA_PROMISC: interface is promisc 539 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 540 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 541 * associated stations and deliver multicast frames both 542 * back to wireless media and to the local net stack. 543 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 544 */ 545 enum ieee80211_sub_if_data_flags { 546 IEEE80211_SDATA_ALLMULTI = BIT(0), 547 IEEE80211_SDATA_PROMISC = BIT(1), 548 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 549 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 550 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 551 }; 552 553 /** 554 * enum ieee80211_sdata_state_bits - virtual interface state bits 555 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 556 * mirrors netif_running() but is separate for interface type 557 * change handling while the interface is up 558 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 559 * mode, so queues are stopped 560 */ 561 enum ieee80211_sdata_state_bits { 562 SDATA_STATE_RUNNING, 563 SDATA_STATE_OFFCHANNEL, 564 }; 565 566 struct ieee80211_sub_if_data { 567 struct list_head list; 568 569 struct wireless_dev wdev; 570 571 /* keys */ 572 struct list_head key_list; 573 574 /* count for keys needing tailroom space allocation */ 575 int crypto_tx_tailroom_needed_cnt; 576 577 struct net_device *dev; 578 struct ieee80211_local *local; 579 580 unsigned int flags; 581 582 unsigned long state; 583 584 int drop_unencrypted; 585 586 char name[IFNAMSIZ]; 587 588 /* 589 * keep track of whether the HT opmode (stored in 590 * vif.bss_info.ht_operation_mode) is valid. 591 */ 592 bool ht_opmode_valid; 593 594 /* to detect idle changes */ 595 bool old_idle; 596 597 /* Fragment table for host-based reassembly */ 598 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 599 unsigned int fragment_next; 600 601 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 602 struct ieee80211_key __rcu *default_unicast_key; 603 struct ieee80211_key __rcu *default_multicast_key; 604 struct ieee80211_key __rcu *default_mgmt_key; 605 606 u16 sequence_number; 607 __be16 control_port_protocol; 608 bool control_port_no_encrypt; 609 610 struct work_struct work; 611 struct sk_buff_head skb_queue; 612 613 bool arp_filter_state; 614 615 /* 616 * AP this belongs to: self in AP mode and 617 * corresponding AP in VLAN mode, NULL for 618 * all others (might be needed later in IBSS) 619 */ 620 struct ieee80211_if_ap *bss; 621 622 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 623 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 624 625 union { 626 struct ieee80211_if_ap ap; 627 struct ieee80211_if_wds wds; 628 struct ieee80211_if_vlan vlan; 629 struct ieee80211_if_managed mgd; 630 struct ieee80211_if_ibss ibss; 631 struct ieee80211_if_mesh mesh; 632 u32 mntr_flags; 633 } u; 634 635 #ifdef CONFIG_MAC80211_DEBUGFS 636 struct { 637 struct dentry *dir; 638 struct dentry *subdir_stations; 639 struct dentry *default_unicast_key; 640 struct dentry *default_multicast_key; 641 struct dentry *default_mgmt_key; 642 } debugfs; 643 #endif 644 /* must be last, dynamically sized area in this! */ 645 struct ieee80211_vif vif; 646 }; 647 648 static inline 649 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 650 { 651 return container_of(p, struct ieee80211_sub_if_data, vif); 652 } 653 654 enum sdata_queue_type { 655 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 656 IEEE80211_SDATA_QUEUE_AGG_START = 1, 657 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 658 }; 659 660 enum { 661 IEEE80211_RX_MSG = 1, 662 IEEE80211_TX_STATUS_MSG = 2, 663 }; 664 665 enum queue_stop_reason { 666 IEEE80211_QUEUE_STOP_REASON_DRIVER, 667 IEEE80211_QUEUE_STOP_REASON_PS, 668 IEEE80211_QUEUE_STOP_REASON_CSA, 669 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 670 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 671 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 672 }; 673 674 #ifdef CONFIG_MAC80211_LEDS 675 struct tpt_led_trigger { 676 struct led_trigger trig; 677 char name[32]; 678 const struct ieee80211_tpt_blink *blink_table; 679 unsigned int blink_table_len; 680 struct timer_list timer; 681 unsigned long prev_traffic; 682 unsigned long tx_bytes, rx_bytes; 683 unsigned int active, want; 684 bool running; 685 }; 686 #endif 687 688 /** 689 * mac80211 scan flags - currently active scan mode 690 * 691 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 692 * well be on the operating channel 693 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 694 * determine if we are on the operating channel or not 695 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 696 * that the scan completed. 697 * @SCAN_ABORTED: Set for our scan work function when the driver reported 698 * a scan complete for an aborted scan. 699 */ 700 enum { 701 SCAN_SW_SCANNING, 702 SCAN_HW_SCANNING, 703 SCAN_COMPLETED, 704 SCAN_ABORTED, 705 }; 706 707 /** 708 * enum mac80211_scan_state - scan state machine states 709 * 710 * @SCAN_DECISION: Main entry point to the scan state machine, this state 711 * determines if we should keep on scanning or switch back to the 712 * operating channel 713 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 714 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 715 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 716 * about us leaving the channel and stop all associated STA interfaces 717 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 718 * AP about us being back and restart all associated STA interfaces 719 */ 720 enum mac80211_scan_state { 721 SCAN_DECISION, 722 SCAN_SET_CHANNEL, 723 SCAN_SEND_PROBE, 724 SCAN_LEAVE_OPER_CHANNEL, 725 SCAN_ENTER_OPER_CHANNEL, 726 }; 727 728 struct ieee80211_local { 729 /* embed the driver visible part. 730 * don't cast (use the static inlines below), but we keep 731 * it first anyway so they become a no-op */ 732 struct ieee80211_hw hw; 733 734 const struct ieee80211_ops *ops; 735 736 /* 737 * work stuff, potentially off-channel (in the future) 738 */ 739 struct list_head work_list; 740 struct timer_list work_timer; 741 struct work_struct work_work; 742 struct sk_buff_head work_skb_queue; 743 744 /* 745 * private workqueue to mac80211. mac80211 makes this accessible 746 * via ieee80211_queue_work() 747 */ 748 struct workqueue_struct *workqueue; 749 750 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 751 struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES]; 752 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 753 spinlock_t queue_stop_reason_lock; 754 755 int open_count; 756 int monitors, cooked_mntrs; 757 /* number of interfaces with corresponding FIF_ flags */ 758 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 759 fif_probe_req; 760 int probe_req_reg; 761 unsigned int filter_flags; /* FIF_* */ 762 763 bool wiphy_ciphers_allocated; 764 765 /* protects the aggregated multicast list and filter calls */ 766 spinlock_t filter_lock; 767 768 /* used for uploading changed mc list */ 769 struct work_struct reconfig_filter; 770 771 /* used to reconfigure hardware SM PS */ 772 struct work_struct recalc_smps; 773 774 /* aggregated multicast list */ 775 struct netdev_hw_addr_list mc_list; 776 777 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 778 779 /* 780 * suspended is true if we finished all the suspend _and_ we have 781 * not yet come up from resume. This is to be used by mac80211 782 * to ensure driver sanity during suspend and mac80211's own 783 * sanity. It can eventually be used for WoW as well. 784 */ 785 bool suspended; 786 787 /* 788 * Resuming is true while suspended, but when we're reprogramming the 789 * hardware -- at that time it's allowed to use ieee80211_queue_work() 790 * again even though some other parts of the stack are still suspended 791 * and we still drop received frames to avoid waking the stack. 792 */ 793 bool resuming; 794 795 /* 796 * quiescing is true during the suspend process _only_ to 797 * ease timer cancelling etc. 798 */ 799 bool quiescing; 800 801 /* device is started */ 802 bool started; 803 804 /* wowlan is enabled -- don't reconfig on resume */ 805 bool wowlan; 806 807 int tx_headroom; /* required headroom for hardware/radiotap */ 808 809 /* Tasklet and skb queue to process calls from IRQ mode. All frames 810 * added to skb_queue will be processed, but frames in 811 * skb_queue_unreliable may be dropped if the total length of these 812 * queues increases over the limit. */ 813 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 814 struct tasklet_struct tasklet; 815 struct sk_buff_head skb_queue; 816 struct sk_buff_head skb_queue_unreliable; 817 818 /* 819 * Internal FIFO queue which is shared between multiple rx path 820 * stages. Its main task is to provide a serialization mechanism, 821 * so all rx handlers can enjoy having exclusive access to their 822 * private data structures. 823 */ 824 struct sk_buff_head rx_skb_queue; 825 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 826 827 /* Station data */ 828 /* 829 * The mutex only protects the list and counter, 830 * reads are done in RCU. 831 * Additionally, the lock protects the hash table, 832 * the pending list and each BSS's TIM bitmap. 833 */ 834 struct mutex sta_mtx; 835 spinlock_t sta_lock; 836 unsigned long num_sta; 837 struct list_head sta_list, sta_pending_list; 838 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 839 struct timer_list sta_cleanup; 840 struct work_struct sta_finish_work; 841 int sta_generation; 842 843 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 844 struct tasklet_struct tx_pending_tasklet; 845 846 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 847 848 /* number of interfaces with corresponding IFF_ flags */ 849 atomic_t iff_allmultis, iff_promiscs; 850 851 struct rate_control_ref *rate_ctrl; 852 853 struct crypto_cipher *wep_tx_tfm; 854 struct crypto_cipher *wep_rx_tfm; 855 u32 wep_iv; 856 857 /* see iface.c */ 858 struct list_head interfaces; 859 struct mutex iflist_mtx; 860 861 /* 862 * Key mutex, protects sdata's key_list and sta_info's 863 * key pointers (write access, they're RCU.) 864 */ 865 struct mutex key_mtx; 866 867 /* mutex for scan and work locking */ 868 struct mutex mtx; 869 870 /* Scanning and BSS list */ 871 unsigned long scanning; 872 struct cfg80211_ssid scan_ssid; 873 struct cfg80211_scan_request *int_scan_req; 874 struct cfg80211_scan_request *scan_req, *hw_scan_req; 875 struct ieee80211_channel *scan_channel; 876 enum ieee80211_band hw_scan_band; 877 int scan_channel_idx; 878 int scan_ies_len; 879 880 bool sched_scanning; 881 struct ieee80211_sched_scan_ies sched_scan_ies; 882 struct work_struct sched_scan_stopped_work; 883 884 unsigned long leave_oper_channel_time; 885 enum mac80211_scan_state next_scan_state; 886 struct delayed_work scan_work; 887 struct ieee80211_sub_if_data *scan_sdata; 888 enum nl80211_channel_type _oper_channel_type; 889 struct ieee80211_channel *oper_channel, *csa_channel; 890 891 /* Temporary remain-on-channel for off-channel operations */ 892 struct ieee80211_channel *tmp_channel; 893 enum nl80211_channel_type tmp_channel_type; 894 895 /* SNMP counters */ 896 /* dot11CountersTable */ 897 u32 dot11TransmittedFragmentCount; 898 u32 dot11MulticastTransmittedFrameCount; 899 u32 dot11FailedCount; 900 u32 dot11RetryCount; 901 u32 dot11MultipleRetryCount; 902 u32 dot11FrameDuplicateCount; 903 u32 dot11ReceivedFragmentCount; 904 u32 dot11MulticastReceivedFrameCount; 905 u32 dot11TransmittedFrameCount; 906 907 #ifdef CONFIG_MAC80211_LEDS 908 int tx_led_counter, rx_led_counter; 909 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 910 struct tpt_led_trigger *tpt_led_trigger; 911 char tx_led_name[32], rx_led_name[32], 912 assoc_led_name[32], radio_led_name[32]; 913 #endif 914 915 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 916 /* TX/RX handler statistics */ 917 unsigned int tx_handlers_drop; 918 unsigned int tx_handlers_queued; 919 unsigned int tx_handlers_drop_unencrypted; 920 unsigned int tx_handlers_drop_fragment; 921 unsigned int tx_handlers_drop_wep; 922 unsigned int tx_handlers_drop_not_assoc; 923 unsigned int tx_handlers_drop_unauth_port; 924 unsigned int rx_handlers_drop; 925 unsigned int rx_handlers_queued; 926 unsigned int rx_handlers_drop_nullfunc; 927 unsigned int rx_handlers_drop_defrag; 928 unsigned int rx_handlers_drop_short; 929 unsigned int rx_handlers_drop_passive_scan; 930 unsigned int tx_expand_skb_head; 931 unsigned int tx_expand_skb_head_cloned; 932 unsigned int rx_expand_skb_head; 933 unsigned int rx_expand_skb_head2; 934 unsigned int rx_handlers_fragments; 935 unsigned int tx_status_drop; 936 #define I802_DEBUG_INC(c) (c)++ 937 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 938 #define I802_DEBUG_INC(c) do { } while (0) 939 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 940 941 942 int total_ps_buffered; /* total number of all buffered unicast and 943 * multicast packets for power saving stations 944 */ 945 int wifi_wme_noack_test; 946 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 947 948 /* 949 * Bitmask of enabled u-apsd queues, 950 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 951 * to take effect. 952 */ 953 unsigned int uapsd_queues; 954 955 /* 956 * Maximum number of buffered frames AP can deliver during a 957 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 958 * Needs a new association to take effect. 959 */ 960 unsigned int uapsd_max_sp_len; 961 962 bool pspolling; 963 bool offchannel_ps_enabled; 964 /* 965 * PS can only be enabled when we have exactly one managed 966 * interface (and monitors) in PS, this then points there. 967 */ 968 struct ieee80211_sub_if_data *ps_sdata; 969 struct work_struct dynamic_ps_enable_work; 970 struct work_struct dynamic_ps_disable_work; 971 struct timer_list dynamic_ps_timer; 972 struct notifier_block network_latency_notifier; 973 struct notifier_block ifa_notifier; 974 975 /* 976 * The dynamic ps timeout configured from user space via WEXT - 977 * this will override whatever chosen by mac80211 internally. 978 */ 979 int dynamic_ps_forced_timeout; 980 int dynamic_ps_user_timeout; 981 bool disable_dynamic_ps; 982 983 int user_power_level; /* in dBm */ 984 int power_constr_level; /* in dBm */ 985 986 enum ieee80211_smps_mode smps_mode; 987 988 struct work_struct restart_work; 989 990 #ifdef CONFIG_MAC80211_DEBUGFS 991 struct local_debugfsdentries { 992 struct dentry *rcdir; 993 struct dentry *keys; 994 } debugfs; 995 #endif 996 997 struct ieee80211_channel *hw_roc_channel; 998 struct net_device *hw_roc_dev; 999 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 1000 struct work_struct hw_roc_start, hw_roc_done; 1001 enum nl80211_channel_type hw_roc_channel_type; 1002 unsigned int hw_roc_duration; 1003 u32 hw_roc_cookie; 1004 bool hw_roc_for_tx; 1005 unsigned long hw_offchan_tx_cookie; 1006 1007 /* dummy netdev for use w/ NAPI */ 1008 struct net_device napi_dev; 1009 1010 struct napi_struct napi; 1011 }; 1012 1013 static inline struct ieee80211_sub_if_data * 1014 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1015 { 1016 return netdev_priv(dev); 1017 } 1018 1019 /* this struct represents 802.11n's RA/TID combination */ 1020 struct ieee80211_ra_tid { 1021 u8 ra[ETH_ALEN]; 1022 u16 tid; 1023 }; 1024 1025 /* Parsed Information Elements */ 1026 struct ieee802_11_elems { 1027 u8 *ie_start; 1028 size_t total_len; 1029 1030 /* pointers to IEs */ 1031 u8 *ssid; 1032 u8 *supp_rates; 1033 u8 *fh_params; 1034 u8 *ds_params; 1035 u8 *cf_params; 1036 struct ieee80211_tim_ie *tim; 1037 u8 *ibss_params; 1038 u8 *challenge; 1039 u8 *wpa; 1040 u8 *rsn; 1041 u8 *erp_info; 1042 u8 *ext_supp_rates; 1043 u8 *wmm_info; 1044 u8 *wmm_param; 1045 struct ieee80211_ht_cap *ht_cap_elem; 1046 struct ieee80211_ht_info *ht_info_elem; 1047 struct ieee80211_meshconf_ie *mesh_config; 1048 u8 *mesh_id; 1049 u8 *peer_link; 1050 u8 *preq; 1051 u8 *prep; 1052 u8 *perr; 1053 struct ieee80211_rann_ie *rann; 1054 u8 *ch_switch_elem; 1055 u8 *country_elem; 1056 u8 *pwr_constr_elem; 1057 u8 *quiet_elem; /* first quite element */ 1058 u8 *timeout_int; 1059 1060 /* length of them, respectively */ 1061 u8 ssid_len; 1062 u8 supp_rates_len; 1063 u8 fh_params_len; 1064 u8 ds_params_len; 1065 u8 cf_params_len; 1066 u8 tim_len; 1067 u8 ibss_params_len; 1068 u8 challenge_len; 1069 u8 wpa_len; 1070 u8 rsn_len; 1071 u8 erp_info_len; 1072 u8 ext_supp_rates_len; 1073 u8 wmm_info_len; 1074 u8 wmm_param_len; 1075 u8 mesh_id_len; 1076 u8 peer_link_len; 1077 u8 preq_len; 1078 u8 prep_len; 1079 u8 perr_len; 1080 u8 ch_switch_elem_len; 1081 u8 country_elem_len; 1082 u8 pwr_constr_elem_len; 1083 u8 quiet_elem_len; 1084 u8 num_of_quiet_elem; /* can be more the one */ 1085 u8 timeout_int_len; 1086 }; 1087 1088 static inline struct ieee80211_local *hw_to_local( 1089 struct ieee80211_hw *hw) 1090 { 1091 return container_of(hw, struct ieee80211_local, hw); 1092 } 1093 1094 static inline struct ieee80211_hw *local_to_hw( 1095 struct ieee80211_local *local) 1096 { 1097 return &local->hw; 1098 } 1099 1100 1101 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1102 { 1103 return compare_ether_addr(raddr, addr) == 0 || 1104 is_broadcast_ether_addr(raddr); 1105 } 1106 1107 1108 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1109 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1110 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1111 u32 changed); 1112 void ieee80211_configure_filter(struct ieee80211_local *local); 1113 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1114 1115 /* STA code */ 1116 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1117 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1118 struct cfg80211_auth_request *req); 1119 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1120 struct cfg80211_assoc_request *req); 1121 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1122 struct cfg80211_deauth_request *req, 1123 void *cookie); 1124 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1125 struct cfg80211_disassoc_request *req, 1126 void *cookie); 1127 void ieee80211_send_pspoll(struct ieee80211_local *local, 1128 struct ieee80211_sub_if_data *sdata); 1129 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1130 int ieee80211_max_network_latency(struct notifier_block *nb, 1131 unsigned long data, void *dummy); 1132 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1133 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1134 struct ieee80211_channel_sw_ie *sw_elem, 1135 struct ieee80211_bss *bss, 1136 u64 timestamp); 1137 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1138 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1139 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1140 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1141 struct sk_buff *skb); 1142 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1143 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1144 1145 /* IBSS code */ 1146 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1147 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1148 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1149 u8 *bssid, u8 *addr, u32 supp_rates, 1150 gfp_t gfp); 1151 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1152 struct cfg80211_ibss_params *params); 1153 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1154 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1155 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1156 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1157 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1158 struct sk_buff *skb); 1159 1160 /* mesh code */ 1161 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1162 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1163 struct sk_buff *skb); 1164 1165 /* scan/BSS handling */ 1166 void ieee80211_scan_work(struct work_struct *work); 1167 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1168 const u8 *ssid, u8 ssid_len, 1169 struct ieee80211_channel *chan); 1170 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1171 struct cfg80211_scan_request *req); 1172 void ieee80211_scan_cancel(struct ieee80211_local *local); 1173 ieee80211_rx_result 1174 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1175 1176 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1177 struct ieee80211_bss * 1178 ieee80211_bss_info_update(struct ieee80211_local *local, 1179 struct ieee80211_rx_status *rx_status, 1180 struct ieee80211_mgmt *mgmt, 1181 size_t len, 1182 struct ieee802_11_elems *elems, 1183 struct ieee80211_channel *channel, 1184 bool beacon); 1185 struct ieee80211_bss * 1186 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1187 u8 *ssid, u8 ssid_len); 1188 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1189 struct ieee80211_bss *bss); 1190 1191 /* scheduled scan handling */ 1192 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1193 struct cfg80211_sched_scan_request *req); 1194 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1195 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1196 1197 /* off-channel helpers */ 1198 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); 1199 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, 1200 bool tell_ap); 1201 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1202 bool offchannel_ps_enable); 1203 void ieee80211_offchannel_return(struct ieee80211_local *local, 1204 bool enable_beaconing, 1205 bool offchannel_ps_disable); 1206 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1207 1208 /* interface handling */ 1209 int ieee80211_iface_init(void); 1210 void ieee80211_iface_exit(void); 1211 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1212 struct net_device **new_dev, enum nl80211_iftype type, 1213 struct vif_params *params); 1214 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1215 enum nl80211_iftype type); 1216 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1217 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1218 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1219 void ieee80211_recalc_idle(struct ieee80211_local *local); 1220 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1221 const int offset); 1222 1223 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1224 { 1225 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1226 } 1227 1228 /* tx handling */ 1229 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1230 void ieee80211_tx_pending(unsigned long data); 1231 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1232 struct net_device *dev); 1233 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1234 struct net_device *dev); 1235 1236 /* 1237 * radiotap header for status frames 1238 */ 1239 struct ieee80211_tx_status_rtap_hdr { 1240 struct ieee80211_radiotap_header hdr; 1241 u8 rate; 1242 u8 padding_for_rate; 1243 __le16 tx_flags; 1244 u8 data_retries; 1245 } __packed; 1246 1247 1248 /* HT */ 1249 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1250 struct ieee80211_ht_cap *ht_cap_ie, 1251 struct ieee80211_sta_ht_cap *ht_cap); 1252 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1253 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1254 const u8 *da, u16 tid, 1255 u16 initiator, u16 reason_code); 1256 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1257 enum ieee80211_smps_mode smps, const u8 *da, 1258 const u8 *bssid); 1259 void ieee80211_request_smps_work(struct work_struct *work); 1260 1261 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1262 u16 initiator, u16 reason, bool stop); 1263 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1264 u16 initiator, u16 reason, bool stop); 1265 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1266 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1267 struct sta_info *sta, 1268 struct ieee80211_mgmt *mgmt, size_t len); 1269 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1270 struct sta_info *sta, 1271 struct ieee80211_mgmt *mgmt, 1272 size_t len); 1273 void ieee80211_process_addba_request(struct ieee80211_local *local, 1274 struct sta_info *sta, 1275 struct ieee80211_mgmt *mgmt, 1276 size_t len); 1277 1278 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1279 enum ieee80211_back_parties initiator, 1280 bool tx); 1281 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1282 enum ieee80211_back_parties initiator, 1283 bool tx); 1284 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1285 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1286 void ieee80211_ba_session_work(struct work_struct *work); 1287 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1288 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1289 1290 /* Spectrum management */ 1291 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1292 struct ieee80211_mgmt *mgmt, 1293 size_t len); 1294 1295 /* Suspend/resume and hw reconfiguration */ 1296 int ieee80211_reconfig(struct ieee80211_local *local); 1297 void ieee80211_stop_device(struct ieee80211_local *local); 1298 1299 #ifdef CONFIG_PM 1300 int __ieee80211_suspend(struct ieee80211_hw *hw, 1301 struct cfg80211_wowlan *wowlan); 1302 1303 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1304 { 1305 struct ieee80211_local *local = hw_to_local(hw); 1306 1307 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1308 "%s: resume with hardware scan still in progress\n", 1309 wiphy_name(hw->wiphy)); 1310 1311 return ieee80211_reconfig(hw_to_local(hw)); 1312 } 1313 #else 1314 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1315 struct cfg80211_wowlan *wowlan) 1316 { 1317 return 0; 1318 } 1319 1320 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1321 { 1322 return 0; 1323 } 1324 #endif 1325 1326 /* utility functions/constants */ 1327 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1328 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1329 enum nl80211_iftype type); 1330 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1331 int rate, int erp, int short_preamble); 1332 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1333 struct ieee80211_hdr *hdr, const u8 *tsc, 1334 gfp_t gfp); 1335 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1336 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1337 void ieee802_11_parse_elems(u8 *start, size_t len, 1338 struct ieee802_11_elems *elems); 1339 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1340 struct ieee802_11_elems *elems, 1341 u64 filter, u32 crc); 1342 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1343 enum ieee80211_band band); 1344 1345 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1346 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1347 void ieee80211_dynamic_ps_timer(unsigned long data); 1348 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1349 struct ieee80211_sub_if_data *sdata, 1350 int powersave); 1351 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1352 struct ieee80211_hdr *hdr); 1353 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1354 struct ieee80211_hdr *hdr, bool ack); 1355 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1356 1357 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1358 enum queue_stop_reason reason); 1359 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1360 enum queue_stop_reason reason); 1361 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1362 enum queue_stop_reason reason); 1363 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1364 enum queue_stop_reason reason); 1365 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1366 struct sk_buff *skb); 1367 int ieee80211_add_pending_skbs(struct ieee80211_local *local, 1368 struct sk_buff_head *skbs); 1369 int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1370 struct sk_buff_head *skbs, 1371 void (*fn)(void *data), void *data); 1372 1373 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1374 u16 transaction, u16 auth_alg, 1375 u8 *extra, size_t extra_len, const u8 *bssid, 1376 const u8 *key, u8 key_len, u8 key_idx); 1377 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1378 const u8 *ie, size_t ie_len, 1379 enum ieee80211_band band, u32 rate_mask, 1380 u8 channel); 1381 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1382 u8 *dst, u32 ratemask, 1383 const u8 *ssid, size_t ssid_len, 1384 const u8 *ie, size_t ie_len, 1385 bool directed); 1386 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1387 const u8 *ssid, size_t ssid_len, 1388 const u8 *ie, size_t ie_len, 1389 u32 ratemask, bool directed); 1390 1391 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1392 const size_t supp_rates_len, 1393 const u8 *supp_rates); 1394 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1395 struct ieee802_11_elems *elems, 1396 enum ieee80211_band band); 1397 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1398 enum ieee80211_smps_mode smps_mode); 1399 void ieee80211_recalc_smps(struct ieee80211_local *local); 1400 1401 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1402 const u8 *ids, int n_ids, size_t offset); 1403 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1404 1405 /* internal work items */ 1406 void ieee80211_work_init(struct ieee80211_local *local); 1407 void ieee80211_add_work(struct ieee80211_work *wk); 1408 void free_work(struct ieee80211_work *wk); 1409 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1410 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1411 struct sk_buff *skb); 1412 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1413 struct ieee80211_channel *chan, 1414 enum nl80211_channel_type channel_type, 1415 unsigned int duration, u64 *cookie); 1416 int ieee80211_wk_cancel_remain_on_channel( 1417 struct ieee80211_sub_if_data *sdata, u64 cookie); 1418 1419 /* channel management */ 1420 enum ieee80211_chan_mode { 1421 CHAN_MODE_UNDEFINED, 1422 CHAN_MODE_HOPPING, 1423 CHAN_MODE_FIXED, 1424 }; 1425 1426 enum ieee80211_chan_mode 1427 ieee80211_get_channel_mode(struct ieee80211_local *local, 1428 struct ieee80211_sub_if_data *ignore); 1429 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1430 struct ieee80211_sub_if_data *sdata, 1431 enum nl80211_channel_type chantype); 1432 1433 #ifdef CONFIG_MAC80211_NOINLINE 1434 #define debug_noinline noinline 1435 #else 1436 #define debug_noinline 1437 #endif 1438 1439 #endif /* IEEE80211_I_H */ 1440