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_UNICAST BIT(1) 140 #define IEEE80211_TX_PS_BUFFERED BIT(2) 141 142 struct ieee80211_tx_data { 143 struct sk_buff *skb; 144 struct ieee80211_local *local; 145 struct ieee80211_sub_if_data *sdata; 146 struct sta_info *sta; 147 struct ieee80211_key *key; 148 149 struct ieee80211_channel *channel; 150 151 unsigned int flags; 152 }; 153 154 155 typedef unsigned __bitwise__ ieee80211_rx_result; 156 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 157 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 158 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 159 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 160 161 /** 162 * enum ieee80211_packet_rx_flags - packet RX flags 163 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 164 * (incl. multicast frames) 165 * @IEEE80211_RX_IN_SCAN: received while scanning 166 * @IEEE80211_RX_FRAGMENTED: fragmented frame 167 * @IEEE80211_RX_AMSDU: a-MSDU packet 168 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 169 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 170 * 171 * These are per-frame flags that are attached to a frame in the 172 * @rx_flags field of &struct ieee80211_rx_status. 173 */ 174 enum ieee80211_packet_rx_flags { 175 IEEE80211_RX_IN_SCAN = BIT(0), 176 IEEE80211_RX_RA_MATCH = BIT(1), 177 IEEE80211_RX_FRAGMENTED = BIT(2), 178 IEEE80211_RX_AMSDU = BIT(3), 179 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 180 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 181 }; 182 183 /** 184 * enum ieee80211_rx_flags - RX data flags 185 * 186 * @IEEE80211_RX_CMNTR: received on cooked monitor already 187 * 188 * These flags are used across handling multiple interfaces 189 * for a single frame. 190 */ 191 enum ieee80211_rx_flags { 192 IEEE80211_RX_CMNTR = BIT(0), 193 }; 194 195 struct ieee80211_rx_data { 196 struct sk_buff *skb; 197 struct ieee80211_local *local; 198 struct ieee80211_sub_if_data *sdata; 199 struct sta_info *sta; 200 struct ieee80211_key *key; 201 202 unsigned int flags; 203 204 /* 205 * Index into sequence numbers array, 0..16 206 * since the last (16) is used for non-QoS, 207 * will be 16 on non-QoS frames. 208 */ 209 int seqno_idx; 210 211 /* 212 * Index into the security IV/PN arrays, 0..16 213 * since the last (16) is used for CCMP-encrypted 214 * management frames, will be set to 16 on mgmt 215 * frames and 0 on non-QoS frames. 216 */ 217 int security_idx; 218 219 u32 tkip_iv32; 220 u16 tkip_iv16; 221 }; 222 223 struct beacon_data { 224 u8 *head, *tail; 225 int head_len, tail_len; 226 int dtim_period; 227 }; 228 229 struct ieee80211_if_ap { 230 struct beacon_data __rcu *beacon; 231 232 struct list_head vlans; 233 234 /* yes, this looks ugly, but guarantees that we can later use 235 * bitmap_empty :) 236 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 237 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 238 struct sk_buff_head ps_bc_buf; 239 atomic_t num_sta_ps; /* number of stations in PS mode */ 240 int dtim_count; 241 bool dtim_bc_mc; 242 }; 243 244 struct ieee80211_if_wds { 245 struct sta_info *sta; 246 u8 remote_addr[ETH_ALEN]; 247 }; 248 249 struct ieee80211_if_vlan { 250 struct list_head list; 251 252 /* used for all tx if the VLAN is configured to 4-addr mode */ 253 struct sta_info __rcu *sta; 254 }; 255 256 struct mesh_stats { 257 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 258 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 259 __u32 fwded_frames; /* Mesh total forwarded frames */ 260 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 261 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 262 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 263 atomic_t estab_plinks; 264 }; 265 266 #define PREQ_Q_F_START 0x1 267 #define PREQ_Q_F_REFRESH 0x2 268 struct mesh_preq_queue { 269 struct list_head list; 270 u8 dst[ETH_ALEN]; 271 u8 flags; 272 }; 273 274 enum ieee80211_work_type { 275 IEEE80211_WORK_ABORT, 276 IEEE80211_WORK_DIRECT_PROBE, 277 IEEE80211_WORK_AUTH, 278 IEEE80211_WORK_ASSOC_BEACON_WAIT, 279 IEEE80211_WORK_ASSOC, 280 IEEE80211_WORK_REMAIN_ON_CHANNEL, 281 IEEE80211_WORK_OFFCHANNEL_TX, 282 }; 283 284 /** 285 * enum work_done_result - indicates what to do after work was done 286 * 287 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 288 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 289 * should be requeued. 290 */ 291 enum work_done_result { 292 WORK_DONE_DESTROY, 293 WORK_DONE_REQUEUE, 294 }; 295 296 struct ieee80211_work { 297 struct list_head list; 298 299 struct rcu_head rcu_head; 300 301 struct ieee80211_sub_if_data *sdata; 302 303 enum work_done_result (*done)(struct ieee80211_work *wk, 304 struct sk_buff *skb); 305 306 struct ieee80211_channel *chan; 307 enum nl80211_channel_type chan_type; 308 309 unsigned long timeout; 310 enum ieee80211_work_type type; 311 312 u8 filter_ta[ETH_ALEN]; 313 314 bool started; 315 316 union { 317 struct { 318 int tries; 319 u16 algorithm, transaction; 320 u8 ssid[IEEE80211_MAX_SSID_LEN]; 321 u8 ssid_len; 322 u8 key[WLAN_KEY_LEN_WEP104]; 323 u8 key_len, key_idx; 324 bool privacy; 325 bool synced; 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 bool synced; 340 } assoc; 341 struct { 342 u32 duration; 343 } remain; 344 struct { 345 struct sk_buff *frame; 346 u32 wait; 347 bool status; 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 int num_gates; 518 const u8 *ie; 519 u8 ie_len; 520 enum { 521 IEEE80211_MESH_SEC_NONE = 0x0, 522 IEEE80211_MESH_SEC_AUTHED = 0x1, 523 IEEE80211_MESH_SEC_SECURED = 0x2, 524 } security; 525 }; 526 527 #ifdef CONFIG_MAC80211_MESH 528 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 529 do { (msh)->mshstats.name++; } while (0) 530 #else 531 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 532 do { } while (0) 533 #endif 534 535 /** 536 * enum ieee80211_sub_if_data_flags - virtual interface flags 537 * 538 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 539 * @IEEE80211_SDATA_PROMISC: interface is promisc 540 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 541 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 542 * associated stations and deliver multicast frames both 543 * back to wireless media and to the local net stack. 544 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 545 */ 546 enum ieee80211_sub_if_data_flags { 547 IEEE80211_SDATA_ALLMULTI = BIT(0), 548 IEEE80211_SDATA_PROMISC = BIT(1), 549 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 550 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 551 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 552 }; 553 554 /** 555 * enum ieee80211_sdata_state_bits - virtual interface state bits 556 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 557 * mirrors netif_running() but is separate for interface type 558 * change handling while the interface is up 559 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 560 * mode, so queues are stopped 561 */ 562 enum ieee80211_sdata_state_bits { 563 SDATA_STATE_RUNNING, 564 SDATA_STATE_OFFCHANNEL, 565 }; 566 567 struct ieee80211_sub_if_data { 568 struct list_head list; 569 570 struct wireless_dev wdev; 571 572 /* keys */ 573 struct list_head key_list; 574 575 /* count for keys needing tailroom space allocation */ 576 int crypto_tx_tailroom_needed_cnt; 577 578 struct net_device *dev; 579 struct ieee80211_local *local; 580 581 unsigned int flags; 582 583 unsigned long state; 584 585 int drop_unencrypted; 586 587 char name[IFNAMSIZ]; 588 589 /* 590 * keep track of whether the HT opmode (stored in 591 * vif.bss_info.ht_operation_mode) is valid. 592 */ 593 bool ht_opmode_valid; 594 595 /* to detect idle changes */ 596 bool old_idle; 597 598 /* Fragment table for host-based reassembly */ 599 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 600 unsigned int fragment_next; 601 602 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 603 struct ieee80211_key __rcu *default_unicast_key; 604 struct ieee80211_key __rcu *default_multicast_key; 605 struct ieee80211_key __rcu *default_mgmt_key; 606 607 u16 sequence_number; 608 __be16 control_port_protocol; 609 bool control_port_no_encrypt; 610 611 struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES]; 612 613 struct work_struct work; 614 struct sk_buff_head skb_queue; 615 616 bool arp_filter_state; 617 618 /* 619 * AP this belongs to: self in AP mode and 620 * corresponding AP in VLAN mode, NULL for 621 * all others (might be needed later in IBSS) 622 */ 623 struct ieee80211_if_ap *bss; 624 625 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 626 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 627 628 union { 629 struct ieee80211_if_ap ap; 630 struct ieee80211_if_wds wds; 631 struct ieee80211_if_vlan vlan; 632 struct ieee80211_if_managed mgd; 633 struct ieee80211_if_ibss ibss; 634 struct ieee80211_if_mesh mesh; 635 u32 mntr_flags; 636 } u; 637 638 #ifdef CONFIG_MAC80211_DEBUGFS 639 struct { 640 struct dentry *dir; 641 struct dentry *subdir_stations; 642 struct dentry *default_unicast_key; 643 struct dentry *default_multicast_key; 644 struct dentry *default_mgmt_key; 645 } debugfs; 646 #endif 647 /* must be last, dynamically sized area in this! */ 648 struct ieee80211_vif vif; 649 }; 650 651 static inline 652 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 653 { 654 return container_of(p, struct ieee80211_sub_if_data, vif); 655 } 656 657 enum sdata_queue_type { 658 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 659 IEEE80211_SDATA_QUEUE_AGG_START = 1, 660 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 661 }; 662 663 enum { 664 IEEE80211_RX_MSG = 1, 665 IEEE80211_TX_STATUS_MSG = 2, 666 IEEE80211_EOSP_MSG = 3, 667 }; 668 669 struct skb_eosp_msg_data { 670 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 671 }; 672 673 enum queue_stop_reason { 674 IEEE80211_QUEUE_STOP_REASON_DRIVER, 675 IEEE80211_QUEUE_STOP_REASON_PS, 676 IEEE80211_QUEUE_STOP_REASON_CSA, 677 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 678 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 679 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 680 IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE, 681 }; 682 683 #ifdef CONFIG_MAC80211_LEDS 684 struct tpt_led_trigger { 685 struct led_trigger trig; 686 char name[32]; 687 const struct ieee80211_tpt_blink *blink_table; 688 unsigned int blink_table_len; 689 struct timer_list timer; 690 unsigned long prev_traffic; 691 unsigned long tx_bytes, rx_bytes; 692 unsigned int active, want; 693 bool running; 694 }; 695 #endif 696 697 /** 698 * mac80211 scan flags - currently active scan mode 699 * 700 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 701 * well be on the operating channel 702 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 703 * determine if we are on the operating channel or not 704 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 705 * that the scan completed. 706 * @SCAN_ABORTED: Set for our scan work function when the driver reported 707 * a scan complete for an aborted scan. 708 */ 709 enum { 710 SCAN_SW_SCANNING, 711 SCAN_HW_SCANNING, 712 SCAN_COMPLETED, 713 SCAN_ABORTED, 714 }; 715 716 /** 717 * enum mac80211_scan_state - scan state machine states 718 * 719 * @SCAN_DECISION: Main entry point to the scan state machine, this state 720 * determines if we should keep on scanning or switch back to the 721 * operating channel 722 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 723 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 724 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP 725 * about us leaving the channel and stop all associated STA interfaces 726 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the 727 * AP about us being back and restart all associated STA interfaces 728 */ 729 enum mac80211_scan_state { 730 SCAN_DECISION, 731 SCAN_SET_CHANNEL, 732 SCAN_SEND_PROBE, 733 SCAN_LEAVE_OPER_CHANNEL, 734 SCAN_ENTER_OPER_CHANNEL, 735 }; 736 737 struct ieee80211_local { 738 /* embed the driver visible part. 739 * don't cast (use the static inlines below), but we keep 740 * it first anyway so they become a no-op */ 741 struct ieee80211_hw hw; 742 743 const struct ieee80211_ops *ops; 744 745 /* 746 * work stuff, potentially off-channel (in the future) 747 */ 748 struct list_head work_list; 749 struct timer_list work_timer; 750 struct work_struct work_work; 751 struct sk_buff_head work_skb_queue; 752 753 /* 754 * private workqueue to mac80211. mac80211 makes this accessible 755 * via ieee80211_queue_work() 756 */ 757 struct workqueue_struct *workqueue; 758 759 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 760 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 761 spinlock_t queue_stop_reason_lock; 762 763 int open_count; 764 int monitors, cooked_mntrs; 765 /* number of interfaces with corresponding FIF_ flags */ 766 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 767 fif_probe_req; 768 int probe_req_reg; 769 unsigned int filter_flags; /* FIF_* */ 770 771 bool wiphy_ciphers_allocated; 772 773 /* protects the aggregated multicast list and filter calls */ 774 spinlock_t filter_lock; 775 776 /* used for uploading changed mc list */ 777 struct work_struct reconfig_filter; 778 779 /* used to reconfigure hardware SM PS */ 780 struct work_struct recalc_smps; 781 782 /* aggregated multicast list */ 783 struct netdev_hw_addr_list mc_list; 784 785 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 786 787 /* 788 * suspended is true if we finished all the suspend _and_ we have 789 * not yet come up from resume. This is to be used by mac80211 790 * to ensure driver sanity during suspend and mac80211's own 791 * sanity. It can eventually be used for WoW as well. 792 */ 793 bool suspended; 794 795 /* 796 * Resuming is true while suspended, but when we're reprogramming the 797 * hardware -- at that time it's allowed to use ieee80211_queue_work() 798 * again even though some other parts of the stack are still suspended 799 * and we still drop received frames to avoid waking the stack. 800 */ 801 bool resuming; 802 803 /* 804 * quiescing is true during the suspend process _only_ to 805 * ease timer cancelling etc. 806 */ 807 bool quiescing; 808 809 /* device is started */ 810 bool started; 811 812 /* wowlan is enabled -- don't reconfig on resume */ 813 bool wowlan; 814 815 int tx_headroom; /* required headroom for hardware/radiotap */ 816 817 /* Tasklet and skb queue to process calls from IRQ mode. All frames 818 * added to skb_queue will be processed, but frames in 819 * skb_queue_unreliable may be dropped if the total length of these 820 * queues increases over the limit. */ 821 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 822 struct tasklet_struct tasklet; 823 struct sk_buff_head skb_queue; 824 struct sk_buff_head skb_queue_unreliable; 825 826 /* 827 * Internal FIFO queue which is shared between multiple rx path 828 * stages. Its main task is to provide a serialization mechanism, 829 * so all rx handlers can enjoy having exclusive access to their 830 * private data structures. 831 */ 832 struct sk_buff_head rx_skb_queue; 833 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 834 835 /* Station data */ 836 /* 837 * The mutex only protects the list and counter, 838 * reads are done in RCU. 839 * Additionally, the lock protects the hash table, 840 * the pending list and each BSS's TIM bitmap. 841 */ 842 struct mutex sta_mtx; 843 spinlock_t sta_lock; 844 unsigned long num_sta; 845 struct list_head sta_list, sta_pending_list; 846 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 847 struct timer_list sta_cleanup; 848 struct work_struct sta_finish_work; 849 int sta_generation; 850 851 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 852 struct tasklet_struct tx_pending_tasklet; 853 854 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 855 856 /* number of interfaces with corresponding IFF_ flags */ 857 atomic_t iff_allmultis, iff_promiscs; 858 859 struct rate_control_ref *rate_ctrl; 860 861 struct crypto_cipher *wep_tx_tfm; 862 struct crypto_cipher *wep_rx_tfm; 863 u32 wep_iv; 864 865 /* see iface.c */ 866 struct list_head interfaces; 867 struct mutex iflist_mtx; 868 869 /* 870 * Key mutex, protects sdata's key_list and sta_info's 871 * key pointers (write access, they're RCU.) 872 */ 873 struct mutex key_mtx; 874 875 /* mutex for scan and work locking */ 876 struct mutex mtx; 877 878 /* Scanning and BSS list */ 879 unsigned long scanning; 880 struct cfg80211_ssid scan_ssid; 881 struct cfg80211_scan_request *int_scan_req; 882 struct cfg80211_scan_request *scan_req, *hw_scan_req; 883 struct ieee80211_channel *scan_channel; 884 enum ieee80211_band hw_scan_band; 885 int scan_channel_idx; 886 int scan_ies_len; 887 888 bool sched_scanning; 889 struct ieee80211_sched_scan_ies sched_scan_ies; 890 struct work_struct sched_scan_stopped_work; 891 892 unsigned long leave_oper_channel_time; 893 enum mac80211_scan_state next_scan_state; 894 struct delayed_work scan_work; 895 struct ieee80211_sub_if_data *scan_sdata; 896 enum nl80211_channel_type _oper_channel_type; 897 struct ieee80211_channel *oper_channel, *csa_channel; 898 899 /* Temporary remain-on-channel for off-channel operations */ 900 struct ieee80211_channel *tmp_channel; 901 enum nl80211_channel_type tmp_channel_type; 902 903 /* SNMP counters */ 904 /* dot11CountersTable */ 905 u32 dot11TransmittedFragmentCount; 906 u32 dot11MulticastTransmittedFrameCount; 907 u32 dot11FailedCount; 908 u32 dot11RetryCount; 909 u32 dot11MultipleRetryCount; 910 u32 dot11FrameDuplicateCount; 911 u32 dot11ReceivedFragmentCount; 912 u32 dot11MulticastReceivedFrameCount; 913 u32 dot11TransmittedFrameCount; 914 915 #ifdef CONFIG_MAC80211_LEDS 916 int tx_led_counter, rx_led_counter; 917 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 918 struct tpt_led_trigger *tpt_led_trigger; 919 char tx_led_name[32], rx_led_name[32], 920 assoc_led_name[32], radio_led_name[32]; 921 #endif 922 923 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 924 /* TX/RX handler statistics */ 925 unsigned int tx_handlers_drop; 926 unsigned int tx_handlers_queued; 927 unsigned int tx_handlers_drop_unencrypted; 928 unsigned int tx_handlers_drop_fragment; 929 unsigned int tx_handlers_drop_wep; 930 unsigned int tx_handlers_drop_not_assoc; 931 unsigned int tx_handlers_drop_unauth_port; 932 unsigned int rx_handlers_drop; 933 unsigned int rx_handlers_queued; 934 unsigned int rx_handlers_drop_nullfunc; 935 unsigned int rx_handlers_drop_defrag; 936 unsigned int rx_handlers_drop_short; 937 unsigned int rx_handlers_drop_passive_scan; 938 unsigned int tx_expand_skb_head; 939 unsigned int tx_expand_skb_head_cloned; 940 unsigned int rx_expand_skb_head; 941 unsigned int rx_expand_skb_head2; 942 unsigned int rx_handlers_fragments; 943 unsigned int tx_status_drop; 944 #define I802_DEBUG_INC(c) (c)++ 945 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 946 #define I802_DEBUG_INC(c) do { } while (0) 947 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 948 949 950 int total_ps_buffered; /* total number of all buffered unicast and 951 * multicast packets for power saving stations 952 */ 953 int wifi_wme_noack_test; 954 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 955 956 /* 957 * Bitmask of enabled u-apsd queues, 958 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 959 * to take effect. 960 */ 961 unsigned int uapsd_queues; 962 963 /* 964 * Maximum number of buffered frames AP can deliver during a 965 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 966 * Needs a new association to take effect. 967 */ 968 unsigned int uapsd_max_sp_len; 969 970 bool pspolling; 971 bool offchannel_ps_enabled; 972 /* 973 * PS can only be enabled when we have exactly one managed 974 * interface (and monitors) in PS, this then points there. 975 */ 976 struct ieee80211_sub_if_data *ps_sdata; 977 struct work_struct dynamic_ps_enable_work; 978 struct work_struct dynamic_ps_disable_work; 979 struct timer_list dynamic_ps_timer; 980 struct notifier_block network_latency_notifier; 981 struct notifier_block ifa_notifier; 982 983 /* 984 * The dynamic ps timeout configured from user space via WEXT - 985 * this will override whatever chosen by mac80211 internally. 986 */ 987 int dynamic_ps_forced_timeout; 988 int dynamic_ps_user_timeout; 989 bool disable_dynamic_ps; 990 991 int user_power_level; /* in dBm */ 992 int power_constr_level; /* in dBm */ 993 994 enum ieee80211_smps_mode smps_mode; 995 996 struct work_struct restart_work; 997 998 #ifdef CONFIG_MAC80211_DEBUGFS 999 struct local_debugfsdentries { 1000 struct dentry *rcdir; 1001 struct dentry *keys; 1002 } debugfs; 1003 #endif 1004 1005 struct ieee80211_channel *hw_roc_channel; 1006 struct net_device *hw_roc_dev; 1007 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 1008 struct work_struct hw_roc_start, hw_roc_done; 1009 enum nl80211_channel_type hw_roc_channel_type; 1010 unsigned int hw_roc_duration; 1011 u32 hw_roc_cookie; 1012 bool hw_roc_for_tx; 1013 1014 /* dummy netdev for use w/ NAPI */ 1015 struct net_device napi_dev; 1016 1017 struct napi_struct napi; 1018 }; 1019 1020 static inline struct ieee80211_sub_if_data * 1021 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1022 { 1023 return netdev_priv(dev); 1024 } 1025 1026 /* this struct represents 802.11n's RA/TID combination */ 1027 struct ieee80211_ra_tid { 1028 u8 ra[ETH_ALEN]; 1029 u16 tid; 1030 }; 1031 1032 static inline struct ieee80211_local *hw_to_local( 1033 struct ieee80211_hw *hw) 1034 { 1035 return container_of(hw, struct ieee80211_local, hw); 1036 } 1037 1038 static inline struct ieee80211_hw *local_to_hw( 1039 struct ieee80211_local *local) 1040 { 1041 return &local->hw; 1042 } 1043 1044 1045 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1046 { 1047 return compare_ether_addr(raddr, addr) == 0 || 1048 is_broadcast_ether_addr(raddr); 1049 } 1050 1051 1052 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1053 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1054 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1055 u32 changed); 1056 void ieee80211_configure_filter(struct ieee80211_local *local); 1057 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1058 1059 /* STA code */ 1060 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1061 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1062 struct cfg80211_auth_request *req); 1063 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1064 struct cfg80211_assoc_request *req); 1065 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1066 struct cfg80211_deauth_request *req, 1067 void *cookie); 1068 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1069 struct cfg80211_disassoc_request *req, 1070 void *cookie); 1071 void ieee80211_send_pspoll(struct ieee80211_local *local, 1072 struct ieee80211_sub_if_data *sdata); 1073 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1074 int ieee80211_max_network_latency(struct notifier_block *nb, 1075 unsigned long data, void *dummy); 1076 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1077 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1078 struct ieee80211_channel_sw_ie *sw_elem, 1079 struct ieee80211_bss *bss, 1080 u64 timestamp); 1081 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1082 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1083 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1084 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1085 struct sk_buff *skb); 1086 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1087 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1088 1089 /* IBSS code */ 1090 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1091 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1092 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 1093 u8 *bssid, u8 *addr, u32 supp_rates, 1094 gfp_t gfp); 1095 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1096 struct cfg80211_ibss_params *params); 1097 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1098 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1099 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1100 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1101 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1102 struct sk_buff *skb); 1103 1104 /* mesh code */ 1105 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1106 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1107 struct sk_buff *skb); 1108 1109 /* scan/BSS handling */ 1110 void ieee80211_scan_work(struct work_struct *work); 1111 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1112 const u8 *ssid, u8 ssid_len, 1113 struct ieee80211_channel *chan); 1114 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1115 struct cfg80211_scan_request *req); 1116 void ieee80211_scan_cancel(struct ieee80211_local *local); 1117 ieee80211_rx_result 1118 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1119 1120 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1121 struct ieee80211_bss * 1122 ieee80211_bss_info_update(struct ieee80211_local *local, 1123 struct ieee80211_rx_status *rx_status, 1124 struct ieee80211_mgmt *mgmt, 1125 size_t len, 1126 struct ieee802_11_elems *elems, 1127 struct ieee80211_channel *channel, 1128 bool beacon); 1129 struct ieee80211_bss * 1130 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1131 u8 *ssid, u8 ssid_len); 1132 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1133 struct ieee80211_bss *bss); 1134 1135 /* scheduled scan handling */ 1136 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1137 struct cfg80211_sched_scan_request *req); 1138 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1139 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1140 1141 /* off-channel helpers */ 1142 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local); 1143 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local, 1144 bool tell_ap); 1145 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1146 bool offchannel_ps_enable); 1147 void ieee80211_offchannel_return(struct ieee80211_local *local, 1148 bool enable_beaconing, 1149 bool offchannel_ps_disable); 1150 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1151 1152 /* interface handling */ 1153 int ieee80211_iface_init(void); 1154 void ieee80211_iface_exit(void); 1155 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1156 struct net_device **new_dev, enum nl80211_iftype type, 1157 struct vif_params *params); 1158 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1159 enum nl80211_iftype type); 1160 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1161 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1162 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1163 void ieee80211_recalc_idle(struct ieee80211_local *local); 1164 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1165 const int offset); 1166 1167 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1168 { 1169 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1170 } 1171 1172 /* tx handling */ 1173 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1174 void ieee80211_tx_pending(unsigned long data); 1175 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1176 struct net_device *dev); 1177 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1178 struct net_device *dev); 1179 1180 /* HT */ 1181 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1182 struct ieee80211_ht_cap *ht_cap_ie, 1183 struct ieee80211_sta_ht_cap *ht_cap); 1184 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1185 const u8 *da, u16 tid, 1186 u16 initiator, u16 reason_code); 1187 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1188 enum ieee80211_smps_mode smps, const u8 *da, 1189 const u8 *bssid); 1190 void ieee80211_request_smps_work(struct work_struct *work); 1191 1192 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1193 u16 initiator, u16 reason, bool stop); 1194 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1195 u16 initiator, u16 reason, bool stop); 1196 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1197 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1198 struct sta_info *sta, 1199 struct ieee80211_mgmt *mgmt, size_t len); 1200 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1201 struct sta_info *sta, 1202 struct ieee80211_mgmt *mgmt, 1203 size_t len); 1204 void ieee80211_process_addba_request(struct ieee80211_local *local, 1205 struct sta_info *sta, 1206 struct ieee80211_mgmt *mgmt, 1207 size_t len); 1208 1209 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1210 enum ieee80211_back_parties initiator, 1211 bool tx); 1212 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1213 enum ieee80211_back_parties initiator, 1214 bool tx); 1215 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1216 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1217 void ieee80211_ba_session_work(struct work_struct *work); 1218 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1219 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1220 1221 /* Spectrum management */ 1222 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1223 struct ieee80211_mgmt *mgmt, 1224 size_t len); 1225 1226 /* Suspend/resume and hw reconfiguration */ 1227 int ieee80211_reconfig(struct ieee80211_local *local); 1228 void ieee80211_stop_device(struct ieee80211_local *local); 1229 1230 #ifdef CONFIG_PM 1231 int __ieee80211_suspend(struct ieee80211_hw *hw, 1232 struct cfg80211_wowlan *wowlan); 1233 1234 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1235 { 1236 struct ieee80211_local *local = hw_to_local(hw); 1237 1238 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1239 "%s: resume with hardware scan still in progress\n", 1240 wiphy_name(hw->wiphy)); 1241 1242 return ieee80211_reconfig(hw_to_local(hw)); 1243 } 1244 #else 1245 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1246 struct cfg80211_wowlan *wowlan) 1247 { 1248 return 0; 1249 } 1250 1251 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1252 { 1253 return 0; 1254 } 1255 #endif 1256 1257 /* utility functions/constants */ 1258 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1259 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1260 enum nl80211_iftype type); 1261 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1262 int rate, int erp, int short_preamble); 1263 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1264 struct ieee80211_hdr *hdr, const u8 *tsc, 1265 gfp_t gfp); 1266 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1267 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1268 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1269 void ieee802_11_parse_elems(u8 *start, size_t len, 1270 struct ieee802_11_elems *elems); 1271 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1272 struct ieee802_11_elems *elems, 1273 u64 filter, u32 crc); 1274 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1275 enum ieee80211_band band); 1276 1277 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1278 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1279 void ieee80211_dynamic_ps_timer(unsigned long data); 1280 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1281 struct ieee80211_sub_if_data *sdata, 1282 int powersave); 1283 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1284 struct ieee80211_hdr *hdr); 1285 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1286 struct ieee80211_hdr *hdr, bool ack); 1287 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1288 1289 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1290 enum queue_stop_reason reason); 1291 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1292 enum queue_stop_reason reason); 1293 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1294 enum queue_stop_reason reason); 1295 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1296 enum queue_stop_reason reason); 1297 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1298 struct sk_buff *skb); 1299 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1300 struct sk_buff_head *skbs); 1301 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1302 struct sk_buff_head *skbs, 1303 void (*fn)(void *data), void *data); 1304 1305 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1306 u16 transaction, u16 auth_alg, 1307 u8 *extra, size_t extra_len, const u8 *bssid, 1308 const u8 *key, u8 key_len, u8 key_idx); 1309 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1310 const u8 *ie, size_t ie_len, 1311 enum ieee80211_band band, u32 rate_mask, 1312 u8 channel); 1313 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1314 u8 *dst, u32 ratemask, 1315 const u8 *ssid, size_t ssid_len, 1316 const u8 *ie, size_t ie_len, 1317 bool directed); 1318 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1319 const u8 *ssid, size_t ssid_len, 1320 const u8 *ie, size_t ie_len, 1321 u32 ratemask, bool directed, bool no_cck); 1322 1323 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1324 const size_t supp_rates_len, 1325 const u8 *supp_rates); 1326 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1327 struct ieee802_11_elems *elems, 1328 enum ieee80211_band band); 1329 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1330 enum ieee80211_smps_mode smps_mode); 1331 void ieee80211_recalc_smps(struct ieee80211_local *local); 1332 1333 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1334 const u8 *ids, int n_ids, size_t offset); 1335 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1336 1337 /* internal work items */ 1338 void ieee80211_work_init(struct ieee80211_local *local); 1339 void ieee80211_add_work(struct ieee80211_work *wk); 1340 void free_work(struct ieee80211_work *wk); 1341 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1342 ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, 1343 struct sk_buff *skb); 1344 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1345 struct ieee80211_channel *chan, 1346 enum nl80211_channel_type channel_type, 1347 unsigned int duration, u64 *cookie); 1348 int ieee80211_wk_cancel_remain_on_channel( 1349 struct ieee80211_sub_if_data *sdata, u64 cookie); 1350 1351 /* channel management */ 1352 enum ieee80211_chan_mode { 1353 CHAN_MODE_UNDEFINED, 1354 CHAN_MODE_HOPPING, 1355 CHAN_MODE_FIXED, 1356 }; 1357 1358 enum ieee80211_chan_mode 1359 ieee80211_get_channel_mode(struct ieee80211_local *local, 1360 struct ieee80211_sub_if_data *ignore); 1361 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1362 struct ieee80211_sub_if_data *sdata, 1363 enum nl80211_channel_type chantype); 1364 1365 #ifdef CONFIG_MAC80211_NOINLINE 1366 #define debug_noinline noinline 1367 #else 1368 #define debug_noinline 1369 #endif 1370 1371 #endif /* IEEE80211_I_H */ 1372