1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #ifndef IEEE80211_I_H 13 #define IEEE80211_I_H 14 15 #include <linux/kernel.h> 16 #include <linux/device.h> 17 #include <linux/if_ether.h> 18 #include <linux/interrupt.h> 19 #include <linux/list.h> 20 #include <linux/netdevice.h> 21 #include <linux/skbuff.h> 22 #include <linux/workqueue.h> 23 #include <linux/types.h> 24 #include <linux/spinlock.h> 25 #include <linux/etherdevice.h> 26 #include <linux/leds.h> 27 #include <linux/idr.h> 28 #include <net/ieee80211_radiotap.h> 29 #include <net/cfg80211.h> 30 #include <net/mac80211.h> 31 #include "key.h" 32 #include "sta_info.h" 33 34 struct ieee80211_local; 35 36 /* Maximum number of broadcast/multicast frames to buffer when some of the 37 * associated stations are using power saving. */ 38 #define AP_MAX_BC_BUFFER 128 39 40 /* Maximum number of frames buffered to all STAs, including multicast frames. 41 * Note: increasing this limit increases the potential memory requirement. Each 42 * frame can be up to about 2 kB long. */ 43 #define TOTAL_MAX_TX_BUFFER 512 44 45 /* Required encryption head and tailroom */ 46 #define IEEE80211_ENCRYPT_HEADROOM 8 47 #define IEEE80211_ENCRYPT_TAILROOM 18 48 49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 50 * reception of at least three fragmented frames. This limit can be increased 51 * by changing this define, at the cost of slower frame reassembly and 52 * increased memory use (about 2 kB of RAM per entry). */ 53 #define IEEE80211_FRAGMENT_MAX 4 54 55 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 56 57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 58 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ 59 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ 60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ 61 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 62 63 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 64 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 65 66 struct ieee80211_fragment_entry { 67 unsigned long first_frag_time; 68 unsigned int seq; 69 unsigned int rx_queue; 70 unsigned int last_frag; 71 unsigned int extra_len; 72 struct sk_buff_head skb_list; 73 int ccmp; /* Whether fragments were encrypted with CCMP */ 74 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 75 }; 76 77 78 struct ieee80211_bss { 79 /* don't want to look up all the time */ 80 size_t ssid_len; 81 u8 ssid[IEEE80211_MAX_SSID_LEN]; 82 83 u8 dtim_period; 84 85 bool wmm_used; 86 bool uapsd_supported; 87 88 unsigned long last_probe_resp; 89 90 #ifdef CONFIG_MAC80211_MESH 91 u8 *mesh_id; 92 size_t mesh_id_len; 93 u8 *mesh_cfg; 94 #endif 95 96 #define IEEE80211_MAX_SUPP_RATES 32 97 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 98 size_t supp_rates_len; 99 100 /* 101 * During association, we save an ERP value from a probe response so 102 * that we can feed ERP info to the driver when handling the 103 * association completes. these fields probably won't be up-to-date 104 * otherwise, you probably don't want to use them. 105 */ 106 bool has_erp_value; 107 u8 erp_value; 108 109 /* Keep track of the corruption of the last beacon/probe response. */ 110 u8 corrupt_data; 111 112 /* Keep track of what bits of information we have valid info for. */ 113 u8 valid_data; 114 }; 115 116 /** 117 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 118 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 119 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 120 * 121 * These are bss flags that are attached to a bss in the 122 * @corrupt_data field of &struct ieee80211_bss. 123 */ 124 enum ieee80211_bss_corrupt_data_flags { 125 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 126 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 127 }; 128 129 /** 130 * enum ieee80211_valid_data_flags - BSS valid data flags 131 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE 132 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 133 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 134 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 135 * 136 * These are bss flags that are attached to a bss in the 137 * @valid_data field of &struct ieee80211_bss. They show which parts 138 * of the data structure were recieved as a result of an un-corrupted 139 * beacon/probe response. 140 */ 141 enum ieee80211_bss_valid_data_flags { 142 IEEE80211_BSS_VALID_DTIM = BIT(0), 143 IEEE80211_BSS_VALID_WMM = BIT(1), 144 IEEE80211_BSS_VALID_RATES = BIT(2), 145 IEEE80211_BSS_VALID_ERP = BIT(3) 146 }; 147 148 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 149 { 150 #ifdef CONFIG_MAC80211_MESH 151 return bss->mesh_cfg; 152 #endif 153 return NULL; 154 } 155 156 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 157 { 158 #ifdef CONFIG_MAC80211_MESH 159 return bss->mesh_id; 160 #endif 161 return NULL; 162 } 163 164 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 165 { 166 #ifdef CONFIG_MAC80211_MESH 167 return bss->mesh_id_len; 168 #endif 169 return 0; 170 } 171 172 173 typedef unsigned __bitwise__ ieee80211_tx_result; 174 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 175 #define TX_DROP ((__force ieee80211_tx_result) 1u) 176 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 177 178 #define IEEE80211_TX_UNICAST BIT(1) 179 #define IEEE80211_TX_PS_BUFFERED BIT(2) 180 181 struct ieee80211_tx_data { 182 struct sk_buff *skb; 183 struct sk_buff_head skbs; 184 struct ieee80211_local *local; 185 struct ieee80211_sub_if_data *sdata; 186 struct sta_info *sta; 187 struct ieee80211_key *key; 188 189 struct ieee80211_channel *channel; 190 191 unsigned int flags; 192 }; 193 194 195 typedef unsigned __bitwise__ ieee80211_rx_result; 196 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 197 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 198 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 199 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 200 201 /** 202 * enum ieee80211_packet_rx_flags - packet RX flags 203 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 204 * (incl. multicast frames) 205 * @IEEE80211_RX_IN_SCAN: received while scanning 206 * @IEEE80211_RX_FRAGMENTED: fragmented frame 207 * @IEEE80211_RX_AMSDU: a-MSDU packet 208 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 209 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 210 * 211 * These are per-frame flags that are attached to a frame in the 212 * @rx_flags field of &struct ieee80211_rx_status. 213 */ 214 enum ieee80211_packet_rx_flags { 215 IEEE80211_RX_IN_SCAN = BIT(0), 216 IEEE80211_RX_RA_MATCH = BIT(1), 217 IEEE80211_RX_FRAGMENTED = BIT(2), 218 IEEE80211_RX_AMSDU = BIT(3), 219 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 220 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 221 }; 222 223 /** 224 * enum ieee80211_rx_flags - RX data flags 225 * 226 * @IEEE80211_RX_CMNTR: received on cooked monitor already 227 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 228 * to cfg80211_report_obss_beacon(). 229 * 230 * These flags are used across handling multiple interfaces 231 * for a single frame. 232 */ 233 enum ieee80211_rx_flags { 234 IEEE80211_RX_CMNTR = BIT(0), 235 IEEE80211_RX_BEACON_REPORTED = BIT(1), 236 }; 237 238 struct ieee80211_rx_data { 239 struct sk_buff *skb; 240 struct ieee80211_local *local; 241 struct ieee80211_sub_if_data *sdata; 242 struct sta_info *sta; 243 struct ieee80211_key *key; 244 245 unsigned int flags; 246 247 /* 248 * Index into sequence numbers array, 0..16 249 * since the last (16) is used for non-QoS, 250 * will be 16 on non-QoS frames. 251 */ 252 int seqno_idx; 253 254 /* 255 * Index into the security IV/PN arrays, 0..16 256 * since the last (16) is used for CCMP-encrypted 257 * management frames, will be set to 16 on mgmt 258 * frames and 0 on non-QoS frames. 259 */ 260 int security_idx; 261 262 u32 tkip_iv32; 263 u16 tkip_iv16; 264 }; 265 266 struct beacon_data { 267 u8 *head, *tail; 268 int head_len, tail_len; 269 struct rcu_head rcu_head; 270 }; 271 272 struct ieee80211_if_ap { 273 struct beacon_data __rcu *beacon; 274 struct sk_buff __rcu *probe_resp; 275 276 struct list_head vlans; 277 278 /* yes, this looks ugly, but guarantees that we can later use 279 * bitmap_empty :) 280 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 281 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 282 struct sk_buff_head ps_bc_buf; 283 atomic_t num_sta_ps; /* number of stations in PS mode */ 284 atomic_t num_sta_authorized; /* number of authorized stations */ 285 int dtim_count; 286 bool dtim_bc_mc; 287 }; 288 289 struct ieee80211_if_wds { 290 struct sta_info *sta; 291 u8 remote_addr[ETH_ALEN]; 292 }; 293 294 struct ieee80211_if_vlan { 295 struct list_head list; 296 297 /* used for all tx if the VLAN is configured to 4-addr mode */ 298 struct sta_info __rcu *sta; 299 }; 300 301 struct mesh_stats { 302 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 303 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 304 __u32 fwded_frames; /* Mesh total forwarded frames */ 305 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 306 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 307 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 308 atomic_t estab_plinks; 309 }; 310 311 #define PREQ_Q_F_START 0x1 312 #define PREQ_Q_F_REFRESH 0x2 313 struct mesh_preq_queue { 314 struct list_head list; 315 u8 dst[ETH_ALEN]; 316 u8 flags; 317 }; 318 319 enum ieee80211_work_type { 320 IEEE80211_WORK_ABORT, 321 IEEE80211_WORK_REMAIN_ON_CHANNEL, 322 IEEE80211_WORK_OFFCHANNEL_TX, 323 }; 324 325 /** 326 * enum work_done_result - indicates what to do after work was done 327 * 328 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 329 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 330 * should be requeued. 331 */ 332 enum work_done_result { 333 WORK_DONE_DESTROY, 334 WORK_DONE_REQUEUE, 335 }; 336 337 struct ieee80211_work { 338 struct list_head list; 339 340 struct rcu_head rcu_head; 341 342 struct ieee80211_sub_if_data *sdata; 343 344 enum work_done_result (*done)(struct ieee80211_work *wk, 345 struct sk_buff *skb); 346 347 struct ieee80211_channel *chan; 348 enum nl80211_channel_type chan_type; 349 350 unsigned long timeout; 351 enum ieee80211_work_type type; 352 353 bool started; 354 355 union { 356 struct { 357 u32 duration; 358 } remain; 359 struct { 360 struct sk_buff *frame; 361 u32 wait; 362 bool status; 363 } offchan_tx; 364 }; 365 366 size_t data_len; 367 u8 data[]; 368 }; 369 370 /* flags used in struct ieee80211_if_managed.flags */ 371 enum ieee80211_sta_flags { 372 IEEE80211_STA_BEACON_POLL = BIT(0), 373 IEEE80211_STA_CONNECTION_POLL = BIT(1), 374 IEEE80211_STA_CONTROL_PORT = BIT(2), 375 IEEE80211_STA_DISABLE_11N = BIT(4), 376 IEEE80211_STA_CSA_RECEIVED = BIT(5), 377 IEEE80211_STA_MFP_ENABLED = BIT(6), 378 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 379 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 380 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 381 }; 382 383 struct ieee80211_mgd_auth_data { 384 struct cfg80211_bss *bss; 385 unsigned long timeout; 386 int tries; 387 u16 algorithm, expected_transaction; 388 389 u8 key[WLAN_KEY_LEN_WEP104]; 390 u8 key_len, key_idx; 391 bool done; 392 393 size_t ie_len; 394 u8 ie[]; 395 }; 396 397 struct ieee80211_mgd_assoc_data { 398 struct cfg80211_bss *bss; 399 const u8 *supp_rates; 400 const u8 *ht_information_ie; 401 402 unsigned long timeout; 403 int tries; 404 405 u16 capability; 406 u8 prev_bssid[ETH_ALEN]; 407 u8 ssid[IEEE80211_MAX_SSID_LEN]; 408 u8 ssid_len; 409 u8 supp_rates_len; 410 bool wmm, uapsd; 411 bool have_beacon; 412 bool sent_assoc; 413 bool synced; 414 415 size_t ie_len; 416 u8 ie[]; 417 }; 418 419 struct ieee80211_if_managed { 420 struct timer_list timer; 421 struct timer_list conn_mon_timer; 422 struct timer_list bcn_mon_timer; 423 struct timer_list chswitch_timer; 424 struct work_struct monitor_work; 425 struct work_struct chswitch_work; 426 struct work_struct beacon_connection_loss_work; 427 428 unsigned long beacon_timeout; 429 unsigned long probe_timeout; 430 int probe_send_count; 431 bool nullfunc_failed; 432 433 struct mutex mtx; 434 struct cfg80211_bss *associated; 435 struct ieee80211_mgd_auth_data *auth_data; 436 struct ieee80211_mgd_assoc_data *assoc_data; 437 438 u8 bssid[ETH_ALEN]; 439 440 u16 aid; 441 442 unsigned long timers_running; /* used for quiesce/restart */ 443 bool powersave; /* powersave requested for this iface */ 444 bool broken_ap; /* AP is broken -- turn off powersave */ 445 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 446 ap_smps, /* smps mode AP thinks we're in */ 447 driver_smps_mode; /* smps mode request */ 448 449 struct work_struct request_smps_work; 450 451 unsigned int flags; 452 453 bool beacon_crc_valid; 454 u32 beacon_crc; 455 456 enum { 457 IEEE80211_MFP_DISABLED, 458 IEEE80211_MFP_OPTIONAL, 459 IEEE80211_MFP_REQUIRED 460 } mfp; /* management frame protection */ 461 462 /* 463 * Bitmask of enabled u-apsd queues, 464 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 465 * to take effect. 466 */ 467 unsigned int uapsd_queues; 468 469 /* 470 * Maximum number of buffered frames AP can deliver during a 471 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 472 * Needs a new association to take effect. 473 */ 474 unsigned int uapsd_max_sp_len; 475 476 int wmm_last_param_set; 477 478 u8 use_4addr; 479 480 /* Signal strength from the last Beacon frame in the current BSS. */ 481 int last_beacon_signal; 482 483 /* 484 * Weighted average of the signal strength from Beacon frames in the 485 * current BSS. This is in units of 1/16 of the signal unit to maintain 486 * accuracy and to speed up calculations, i.e., the value need to be 487 * divided by 16 to get the actual value. 488 */ 489 int ave_beacon_signal; 490 491 /* 492 * Number of Beacon frames used in ave_beacon_signal. This can be used 493 * to avoid generating less reliable cqm events that would be based 494 * only on couple of received frames. 495 */ 496 unsigned int count_beacon_signal; 497 498 /* 499 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 500 * that triggered a cqm event. 0 indicates that no event has been 501 * generated for the current association. 502 */ 503 int last_cqm_event_signal; 504 505 /* 506 * State variables for keeping track of RSSI of the AP currently 507 * connected to and informing driver when RSSI has gone 508 * below/above a certain threshold. 509 */ 510 int rssi_min_thold, rssi_max_thold; 511 int last_ave_beacon_signal; 512 513 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 514 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 515 }; 516 517 struct ieee80211_if_ibss { 518 struct timer_list timer; 519 520 struct mutex mtx; 521 522 unsigned long last_scan_completed; 523 524 u32 basic_rates; 525 526 bool timer_running; 527 528 bool fixed_bssid; 529 bool fixed_channel; 530 bool privacy; 531 532 bool control_port; 533 534 u8 bssid[ETH_ALEN] __aligned(2); 535 u8 ssid[IEEE80211_MAX_SSID_LEN]; 536 u8 ssid_len, ie_len; 537 u8 *ie; 538 struct ieee80211_channel *channel; 539 enum nl80211_channel_type channel_type; 540 541 unsigned long ibss_join_req; 542 /* probe response/beacon for IBSS */ 543 struct sk_buff __rcu *presp; 544 struct sk_buff *skb; 545 546 spinlock_t incomplete_lock; 547 struct list_head incomplete_stations; 548 549 enum { 550 IEEE80211_IBSS_MLME_SEARCH, 551 IEEE80211_IBSS_MLME_JOINED, 552 } state; 553 }; 554 555 struct ieee80211_if_mesh { 556 struct timer_list housekeeping_timer; 557 struct timer_list mesh_path_timer; 558 struct timer_list mesh_path_root_timer; 559 560 unsigned long timers_running; 561 562 unsigned long wrkq_flags; 563 564 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 565 size_t mesh_id_len; 566 /* Active Path Selection Protocol Identifier */ 567 u8 mesh_pp_id; 568 /* Active Path Selection Metric Identifier */ 569 u8 mesh_pm_id; 570 /* Congestion Control Mode Identifier */ 571 u8 mesh_cc_id; 572 /* Synchronization Protocol Identifier */ 573 u8 mesh_sp_id; 574 /* Authentication Protocol Identifier */ 575 u8 mesh_auth_id; 576 /* Local mesh Sequence Number */ 577 u32 sn; 578 /* Last used PREQ ID */ 579 u32 preq_id; 580 atomic_t mpaths; 581 /* Timestamp of last SN update */ 582 unsigned long last_sn_update; 583 /* Time when it's ok to send next PERR */ 584 unsigned long next_perr; 585 /* Timestamp of last PREQ sent */ 586 unsigned long last_preq; 587 struct mesh_rmc *rmc; 588 spinlock_t mesh_preq_queue_lock; 589 struct mesh_preq_queue preq_queue; 590 int preq_queue_len; 591 struct mesh_stats mshstats; 592 struct mesh_config mshcfg; 593 u32 mesh_seqnum; 594 bool accepting_plinks; 595 int num_gates; 596 const u8 *ie; 597 u8 ie_len; 598 enum { 599 IEEE80211_MESH_SEC_NONE = 0x0, 600 IEEE80211_MESH_SEC_AUTHED = 0x1, 601 IEEE80211_MESH_SEC_SECURED = 0x2, 602 } security; 603 }; 604 605 #ifdef CONFIG_MAC80211_MESH 606 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 607 do { (msh)->mshstats.name++; } while (0) 608 #else 609 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 610 do { } while (0) 611 #endif 612 613 /** 614 * enum ieee80211_sub_if_data_flags - virtual interface flags 615 * 616 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 617 * @IEEE80211_SDATA_PROMISC: interface is promisc 618 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 619 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 620 * associated stations and deliver multicast frames both 621 * back to wireless media and to the local net stack. 622 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 623 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 624 */ 625 enum ieee80211_sub_if_data_flags { 626 IEEE80211_SDATA_ALLMULTI = BIT(0), 627 IEEE80211_SDATA_PROMISC = BIT(1), 628 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 629 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 630 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 631 IEEE80211_SDATA_IN_DRIVER = BIT(5), 632 }; 633 634 /** 635 * enum ieee80211_sdata_state_bits - virtual interface state bits 636 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 637 * mirrors netif_running() but is separate for interface type 638 * change handling while the interface is up 639 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 640 * mode, so queues are stopped 641 */ 642 enum ieee80211_sdata_state_bits { 643 SDATA_STATE_RUNNING, 644 SDATA_STATE_OFFCHANNEL, 645 }; 646 647 struct ieee80211_sub_if_data { 648 struct list_head list; 649 650 struct wireless_dev wdev; 651 652 /* keys */ 653 struct list_head key_list; 654 655 /* count for keys needing tailroom space allocation */ 656 int crypto_tx_tailroom_needed_cnt; 657 658 struct net_device *dev; 659 struct ieee80211_local *local; 660 661 unsigned int flags; 662 663 unsigned long state; 664 665 int drop_unencrypted; 666 667 char name[IFNAMSIZ]; 668 669 /* 670 * keep track of whether the HT opmode (stored in 671 * vif.bss_info.ht_operation_mode) is valid. 672 */ 673 bool ht_opmode_valid; 674 675 /* to detect idle changes */ 676 bool old_idle; 677 678 /* Fragment table for host-based reassembly */ 679 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 680 unsigned int fragment_next; 681 682 /* TID bitmap for NoAck policy */ 683 u16 noack_map; 684 685 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 686 struct ieee80211_key __rcu *default_unicast_key; 687 struct ieee80211_key __rcu *default_multicast_key; 688 struct ieee80211_key __rcu *default_mgmt_key; 689 690 u16 sequence_number; 691 __be16 control_port_protocol; 692 bool control_port_no_encrypt; 693 694 struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES]; 695 696 struct work_struct work; 697 struct sk_buff_head skb_queue; 698 699 bool arp_filter_state; 700 701 /* 702 * AP this belongs to: self in AP mode and 703 * corresponding AP in VLAN mode, NULL for 704 * all others (might be needed later in IBSS) 705 */ 706 struct ieee80211_if_ap *bss; 707 708 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 709 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 710 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 711 712 union { 713 struct ieee80211_if_ap ap; 714 struct ieee80211_if_wds wds; 715 struct ieee80211_if_vlan vlan; 716 struct ieee80211_if_managed mgd; 717 struct ieee80211_if_ibss ibss; 718 struct ieee80211_if_mesh mesh; 719 u32 mntr_flags; 720 } u; 721 722 #ifdef CONFIG_MAC80211_DEBUGFS 723 struct { 724 struct dentry *dir; 725 struct dentry *subdir_stations; 726 struct dentry *default_unicast_key; 727 struct dentry *default_multicast_key; 728 struct dentry *default_mgmt_key; 729 } debugfs; 730 #endif 731 /* must be last, dynamically sized area in this! */ 732 struct ieee80211_vif vif; 733 }; 734 735 static inline 736 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 737 { 738 return container_of(p, struct ieee80211_sub_if_data, vif); 739 } 740 741 enum sdata_queue_type { 742 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 743 IEEE80211_SDATA_QUEUE_AGG_START = 1, 744 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 745 }; 746 747 enum { 748 IEEE80211_RX_MSG = 1, 749 IEEE80211_TX_STATUS_MSG = 2, 750 IEEE80211_EOSP_MSG = 3, 751 }; 752 753 struct skb_eosp_msg_data { 754 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 755 }; 756 757 enum queue_stop_reason { 758 IEEE80211_QUEUE_STOP_REASON_DRIVER, 759 IEEE80211_QUEUE_STOP_REASON_PS, 760 IEEE80211_QUEUE_STOP_REASON_CSA, 761 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 762 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 763 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 764 IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE, 765 }; 766 767 #ifdef CONFIG_MAC80211_LEDS 768 struct tpt_led_trigger { 769 struct led_trigger trig; 770 char name[32]; 771 const struct ieee80211_tpt_blink *blink_table; 772 unsigned int blink_table_len; 773 struct timer_list timer; 774 unsigned long prev_traffic; 775 unsigned long tx_bytes, rx_bytes; 776 unsigned int active, want; 777 bool running; 778 }; 779 #endif 780 781 /** 782 * mac80211 scan flags - currently active scan mode 783 * 784 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 785 * well be on the operating channel 786 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 787 * determine if we are on the operating channel or not 788 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 789 * that the scan completed. 790 * @SCAN_ABORTED: Set for our scan work function when the driver reported 791 * a scan complete for an aborted scan. 792 */ 793 enum { 794 SCAN_SW_SCANNING, 795 SCAN_HW_SCANNING, 796 SCAN_COMPLETED, 797 SCAN_ABORTED, 798 }; 799 800 /** 801 * enum mac80211_scan_state - scan state machine states 802 * 803 * @SCAN_DECISION: Main entry point to the scan state machine, this state 804 * determines if we should keep on scanning or switch back to the 805 * operating channel 806 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 807 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 808 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 809 * send out data 810 * @SCAN_RESUME: Resume the scan and scan the next channel 811 */ 812 enum mac80211_scan_state { 813 SCAN_DECISION, 814 SCAN_SET_CHANNEL, 815 SCAN_SEND_PROBE, 816 SCAN_SUSPEND, 817 SCAN_RESUME, 818 }; 819 820 struct ieee80211_local { 821 /* embed the driver visible part. 822 * don't cast (use the static inlines below), but we keep 823 * it first anyway so they become a no-op */ 824 struct ieee80211_hw hw; 825 826 const struct ieee80211_ops *ops; 827 828 /* 829 * work stuff, potentially off-channel (in the future) 830 */ 831 struct list_head work_list; 832 struct timer_list work_timer; 833 struct work_struct work_work; 834 835 /* 836 * private workqueue to mac80211. mac80211 makes this accessible 837 * via ieee80211_queue_work() 838 */ 839 struct workqueue_struct *workqueue; 840 841 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 842 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 843 spinlock_t queue_stop_reason_lock; 844 845 int open_count; 846 int monitors, cooked_mntrs; 847 /* number of interfaces with corresponding FIF_ flags */ 848 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 849 fif_probe_req; 850 int probe_req_reg; 851 unsigned int filter_flags; /* FIF_* */ 852 853 bool wiphy_ciphers_allocated; 854 855 /* protects the aggregated multicast list and filter calls */ 856 spinlock_t filter_lock; 857 858 /* used for uploading changed mc list */ 859 struct work_struct reconfig_filter; 860 861 /* used to reconfigure hardware SM PS */ 862 struct work_struct recalc_smps; 863 864 /* aggregated multicast list */ 865 struct netdev_hw_addr_list mc_list; 866 867 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 868 869 /* 870 * suspended is true if we finished all the suspend _and_ we have 871 * not yet come up from resume. This is to be used by mac80211 872 * to ensure driver sanity during suspend and mac80211's own 873 * sanity. It can eventually be used for WoW as well. 874 */ 875 bool suspended; 876 877 /* 878 * Resuming is true while suspended, but when we're reprogramming the 879 * hardware -- at that time it's allowed to use ieee80211_queue_work() 880 * again even though some other parts of the stack are still suspended 881 * and we still drop received frames to avoid waking the stack. 882 */ 883 bool resuming; 884 885 /* 886 * quiescing is true during the suspend process _only_ to 887 * ease timer cancelling etc. 888 */ 889 bool quiescing; 890 891 /* device is started */ 892 bool started; 893 894 /* wowlan is enabled -- don't reconfig on resume */ 895 bool wowlan; 896 897 int tx_headroom; /* required headroom for hardware/radiotap */ 898 899 /* Tasklet and skb queue to process calls from IRQ mode. All frames 900 * added to skb_queue will be processed, but frames in 901 * skb_queue_unreliable may be dropped if the total length of these 902 * queues increases over the limit. */ 903 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 904 struct tasklet_struct tasklet; 905 struct sk_buff_head skb_queue; 906 struct sk_buff_head skb_queue_unreliable; 907 908 /* 909 * Internal FIFO queue which is shared between multiple rx path 910 * stages. Its main task is to provide a serialization mechanism, 911 * so all rx handlers can enjoy having exclusive access to their 912 * private data structures. 913 */ 914 struct sk_buff_head rx_skb_queue; 915 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 916 917 /* Station data */ 918 /* 919 * The mutex only protects the list, hash table and 920 * counter, reads are done with RCU. 921 */ 922 struct mutex sta_mtx; 923 spinlock_t tim_lock; 924 unsigned long num_sta; 925 struct list_head sta_list; 926 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 927 struct timer_list sta_cleanup; 928 int sta_generation; 929 930 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 931 struct tasklet_struct tx_pending_tasklet; 932 933 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 934 935 /* number of interfaces with corresponding IFF_ flags */ 936 atomic_t iff_allmultis, iff_promiscs; 937 938 struct rate_control_ref *rate_ctrl; 939 940 struct crypto_cipher *wep_tx_tfm; 941 struct crypto_cipher *wep_rx_tfm; 942 u32 wep_iv; 943 944 /* see iface.c */ 945 struct list_head interfaces; 946 struct mutex iflist_mtx; 947 948 /* 949 * Key mutex, protects sdata's key_list and sta_info's 950 * key pointers (write access, they're RCU.) 951 */ 952 struct mutex key_mtx; 953 954 /* mutex for scan and work locking */ 955 struct mutex mtx; 956 957 /* Scanning and BSS list */ 958 unsigned long scanning; 959 struct cfg80211_ssid scan_ssid; 960 struct cfg80211_scan_request *int_scan_req; 961 struct cfg80211_scan_request *scan_req, *hw_scan_req; 962 struct ieee80211_channel *scan_channel; 963 enum ieee80211_band hw_scan_band; 964 int scan_channel_idx; 965 int scan_ies_len; 966 967 bool sched_scanning; 968 struct ieee80211_sched_scan_ies sched_scan_ies; 969 struct work_struct sched_scan_stopped_work; 970 971 unsigned long leave_oper_channel_time; 972 enum mac80211_scan_state next_scan_state; 973 struct delayed_work scan_work; 974 struct ieee80211_sub_if_data *scan_sdata; 975 enum nl80211_channel_type _oper_channel_type; 976 struct ieee80211_channel *oper_channel, *csa_channel; 977 978 /* Temporary remain-on-channel for off-channel operations */ 979 struct ieee80211_channel *tmp_channel; 980 enum nl80211_channel_type tmp_channel_type; 981 982 /* SNMP counters */ 983 /* dot11CountersTable */ 984 u32 dot11TransmittedFragmentCount; 985 u32 dot11MulticastTransmittedFrameCount; 986 u32 dot11FailedCount; 987 u32 dot11RetryCount; 988 u32 dot11MultipleRetryCount; 989 u32 dot11FrameDuplicateCount; 990 u32 dot11ReceivedFragmentCount; 991 u32 dot11MulticastReceivedFrameCount; 992 u32 dot11TransmittedFrameCount; 993 994 #ifdef CONFIG_MAC80211_LEDS 995 int tx_led_counter, rx_led_counter; 996 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 997 struct tpt_led_trigger *tpt_led_trigger; 998 char tx_led_name[32], rx_led_name[32], 999 assoc_led_name[32], radio_led_name[32]; 1000 #endif 1001 1002 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1003 /* TX/RX handler statistics */ 1004 unsigned int tx_handlers_drop; 1005 unsigned int tx_handlers_queued; 1006 unsigned int tx_handlers_drop_unencrypted; 1007 unsigned int tx_handlers_drop_fragment; 1008 unsigned int tx_handlers_drop_wep; 1009 unsigned int tx_handlers_drop_not_assoc; 1010 unsigned int tx_handlers_drop_unauth_port; 1011 unsigned int rx_handlers_drop; 1012 unsigned int rx_handlers_queued; 1013 unsigned int rx_handlers_drop_nullfunc; 1014 unsigned int rx_handlers_drop_defrag; 1015 unsigned int rx_handlers_drop_short; 1016 unsigned int rx_handlers_drop_passive_scan; 1017 unsigned int tx_expand_skb_head; 1018 unsigned int tx_expand_skb_head_cloned; 1019 unsigned int rx_expand_skb_head; 1020 unsigned int rx_expand_skb_head2; 1021 unsigned int rx_handlers_fragments; 1022 unsigned int tx_status_drop; 1023 #define I802_DEBUG_INC(c) (c)++ 1024 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1025 #define I802_DEBUG_INC(c) do { } while (0) 1026 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1027 1028 1029 int total_ps_buffered; /* total number of all buffered unicast and 1030 * multicast packets for power saving stations 1031 */ 1032 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 1033 1034 bool pspolling; 1035 bool offchannel_ps_enabled; 1036 /* 1037 * PS can only be enabled when we have exactly one managed 1038 * interface (and monitors) in PS, this then points there. 1039 */ 1040 struct ieee80211_sub_if_data *ps_sdata; 1041 struct work_struct dynamic_ps_enable_work; 1042 struct work_struct dynamic_ps_disable_work; 1043 struct timer_list dynamic_ps_timer; 1044 struct notifier_block network_latency_notifier; 1045 struct notifier_block ifa_notifier; 1046 1047 /* 1048 * The dynamic ps timeout configured from user space via WEXT - 1049 * this will override whatever chosen by mac80211 internally. 1050 */ 1051 int dynamic_ps_forced_timeout; 1052 int dynamic_ps_user_timeout; 1053 bool disable_dynamic_ps; 1054 1055 int user_power_level; /* in dBm */ 1056 int power_constr_level; /* in dBm */ 1057 1058 enum ieee80211_smps_mode smps_mode; 1059 1060 struct work_struct restart_work; 1061 1062 #ifdef CONFIG_MAC80211_DEBUGFS 1063 struct local_debugfsdentries { 1064 struct dentry *rcdir; 1065 struct dentry *keys; 1066 } debugfs; 1067 #endif 1068 1069 struct ieee80211_channel *hw_roc_channel; 1070 struct net_device *hw_roc_dev; 1071 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 1072 struct work_struct hw_roc_start, hw_roc_done; 1073 enum nl80211_channel_type hw_roc_channel_type; 1074 unsigned int hw_roc_duration; 1075 u32 hw_roc_cookie; 1076 bool hw_roc_for_tx; 1077 1078 struct idr ack_status_frames; 1079 spinlock_t ack_status_lock; 1080 1081 /* dummy netdev for use w/ NAPI */ 1082 struct net_device napi_dev; 1083 1084 struct napi_struct napi; 1085 }; 1086 1087 static inline struct ieee80211_sub_if_data * 1088 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1089 { 1090 return netdev_priv(dev); 1091 } 1092 1093 /* this struct represents 802.11n's RA/TID combination */ 1094 struct ieee80211_ra_tid { 1095 u8 ra[ETH_ALEN]; 1096 u16 tid; 1097 }; 1098 1099 /* Parsed Information Elements */ 1100 struct ieee802_11_elems { 1101 u8 *ie_start; 1102 size_t total_len; 1103 1104 /* pointers to IEs */ 1105 u8 *ssid; 1106 u8 *supp_rates; 1107 u8 *fh_params; 1108 u8 *ds_params; 1109 u8 *cf_params; 1110 struct ieee80211_tim_ie *tim; 1111 u8 *ibss_params; 1112 u8 *challenge; 1113 u8 *wpa; 1114 u8 *rsn; 1115 u8 *erp_info; 1116 u8 *ext_supp_rates; 1117 u8 *wmm_info; 1118 u8 *wmm_param; 1119 struct ieee80211_ht_cap *ht_cap_elem; 1120 struct ieee80211_ht_info *ht_info_elem; 1121 struct ieee80211_meshconf_ie *mesh_config; 1122 u8 *mesh_id; 1123 u8 *peering; 1124 u8 *preq; 1125 u8 *prep; 1126 u8 *perr; 1127 struct ieee80211_rann_ie *rann; 1128 u8 *ch_switch_elem; 1129 u8 *country_elem; 1130 u8 *pwr_constr_elem; 1131 u8 *quiet_elem; /* first quite element */ 1132 u8 *timeout_int; 1133 1134 /* length of them, respectively */ 1135 u8 ssid_len; 1136 u8 supp_rates_len; 1137 u8 fh_params_len; 1138 u8 ds_params_len; 1139 u8 cf_params_len; 1140 u8 tim_len; 1141 u8 ibss_params_len; 1142 u8 challenge_len; 1143 u8 wpa_len; 1144 u8 rsn_len; 1145 u8 erp_info_len; 1146 u8 ext_supp_rates_len; 1147 u8 wmm_info_len; 1148 u8 wmm_param_len; 1149 u8 mesh_id_len; 1150 u8 peering_len; 1151 u8 preq_len; 1152 u8 prep_len; 1153 u8 perr_len; 1154 u8 ch_switch_elem_len; 1155 u8 country_elem_len; 1156 u8 pwr_constr_elem_len; 1157 u8 quiet_elem_len; 1158 u8 num_of_quiet_elem; /* can be more the one */ 1159 u8 timeout_int_len; 1160 1161 /* whether a parse error occurred while retrieving these elements */ 1162 bool parse_error; 1163 }; 1164 1165 static inline struct ieee80211_local *hw_to_local( 1166 struct ieee80211_hw *hw) 1167 { 1168 return container_of(hw, struct ieee80211_local, hw); 1169 } 1170 1171 1172 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1173 { 1174 return compare_ether_addr(raddr, addr) == 0 || 1175 is_broadcast_ether_addr(raddr); 1176 } 1177 1178 1179 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1180 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1181 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1182 u32 changed); 1183 void ieee80211_configure_filter(struct ieee80211_local *local); 1184 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1185 1186 /* STA code */ 1187 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1188 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1189 struct cfg80211_auth_request *req); 1190 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1191 struct cfg80211_assoc_request *req); 1192 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1193 struct cfg80211_deauth_request *req); 1194 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1195 struct cfg80211_disassoc_request *req); 1196 void ieee80211_send_pspoll(struct ieee80211_local *local, 1197 struct ieee80211_sub_if_data *sdata); 1198 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1199 int ieee80211_max_network_latency(struct notifier_block *nb, 1200 unsigned long data, void *dummy); 1201 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1202 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1203 struct ieee80211_channel_sw_ie *sw_elem, 1204 struct ieee80211_bss *bss, 1205 u64 timestamp); 1206 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1207 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1208 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1209 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1210 struct sk_buff *skb); 1211 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1212 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1213 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1214 1215 /* IBSS code */ 1216 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1217 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1218 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1219 const u8 *bssid, const u8 *addr, u32 supp_rates); 1220 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1221 struct cfg80211_ibss_params *params); 1222 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1223 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1224 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1225 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1226 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1227 struct sk_buff *skb); 1228 1229 /* mesh code */ 1230 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1231 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1232 struct sk_buff *skb); 1233 1234 /* scan/BSS handling */ 1235 void ieee80211_scan_work(struct work_struct *work); 1236 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1237 const u8 *ssid, u8 ssid_len, 1238 struct ieee80211_channel *chan); 1239 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1240 struct cfg80211_scan_request *req); 1241 void ieee80211_scan_cancel(struct ieee80211_local *local); 1242 ieee80211_rx_result 1243 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1244 1245 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1246 struct ieee80211_bss * 1247 ieee80211_bss_info_update(struct ieee80211_local *local, 1248 struct ieee80211_rx_status *rx_status, 1249 struct ieee80211_mgmt *mgmt, 1250 size_t len, 1251 struct ieee802_11_elems *elems, 1252 struct ieee80211_channel *channel, 1253 bool beacon); 1254 struct ieee80211_bss * 1255 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 1256 u8 *ssid, u8 ssid_len); 1257 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1258 struct ieee80211_bss *bss); 1259 1260 /* scheduled scan handling */ 1261 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1262 struct cfg80211_sched_scan_request *req); 1263 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1264 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1265 1266 /* off-channel helpers */ 1267 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1268 bool offchannel_ps_enable); 1269 void ieee80211_offchannel_return(struct ieee80211_local *local, 1270 bool offchannel_ps_disable); 1271 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1272 1273 /* interface handling */ 1274 int ieee80211_iface_init(void); 1275 void ieee80211_iface_exit(void); 1276 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1277 struct net_device **new_dev, enum nl80211_iftype type, 1278 struct vif_params *params); 1279 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1280 enum nl80211_iftype type); 1281 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1282 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1283 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1284 void ieee80211_recalc_idle(struct ieee80211_local *local); 1285 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1286 const int offset); 1287 1288 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1289 { 1290 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1291 } 1292 1293 /* tx handling */ 1294 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1295 void ieee80211_tx_pending(unsigned long data); 1296 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1297 struct net_device *dev); 1298 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1299 struct net_device *dev); 1300 1301 /* HT */ 1302 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata); 1303 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1304 struct ieee80211_sta_ht_cap *ht_cap); 1305 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1306 struct ieee80211_supported_band *sband, 1307 struct ieee80211_ht_cap *ht_cap_ie, 1308 struct ieee80211_sta_ht_cap *ht_cap); 1309 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1310 const u8 *da, u16 tid, 1311 u16 initiator, u16 reason_code); 1312 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1313 enum ieee80211_smps_mode smps, const u8 *da, 1314 const u8 *bssid); 1315 void ieee80211_request_smps_work(struct work_struct *work); 1316 1317 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1318 u16 initiator, u16 reason, bool stop); 1319 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1320 u16 initiator, u16 reason, bool stop); 1321 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1322 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1323 struct sta_info *sta, 1324 struct ieee80211_mgmt *mgmt, size_t len); 1325 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1326 struct sta_info *sta, 1327 struct ieee80211_mgmt *mgmt, 1328 size_t len); 1329 void ieee80211_process_addba_request(struct ieee80211_local *local, 1330 struct sta_info *sta, 1331 struct ieee80211_mgmt *mgmt, 1332 size_t len); 1333 1334 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1335 enum ieee80211_back_parties initiator, 1336 bool tx); 1337 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1338 enum ieee80211_back_parties initiator, 1339 bool tx); 1340 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1341 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1342 void ieee80211_ba_session_work(struct work_struct *work); 1343 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1344 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1345 1346 /* Spectrum management */ 1347 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1348 struct ieee80211_mgmt *mgmt, 1349 size_t len); 1350 1351 /* Suspend/resume and hw reconfiguration */ 1352 int ieee80211_reconfig(struct ieee80211_local *local); 1353 void ieee80211_stop_device(struct ieee80211_local *local); 1354 1355 #ifdef CONFIG_PM 1356 int __ieee80211_suspend(struct ieee80211_hw *hw, 1357 struct cfg80211_wowlan *wowlan); 1358 1359 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1360 { 1361 struct ieee80211_local *local = hw_to_local(hw); 1362 1363 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1364 "%s: resume with hardware scan still in progress\n", 1365 wiphy_name(hw->wiphy)); 1366 1367 return ieee80211_reconfig(hw_to_local(hw)); 1368 } 1369 #else 1370 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1371 struct cfg80211_wowlan *wowlan) 1372 { 1373 return 0; 1374 } 1375 1376 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1377 { 1378 return 0; 1379 } 1380 #endif 1381 1382 /* utility functions/constants */ 1383 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1384 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1385 enum nl80211_iftype type); 1386 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1387 int rate, int erp, int short_preamble); 1388 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1389 struct ieee80211_hdr *hdr, const u8 *tsc, 1390 gfp_t gfp); 1391 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1392 bool bss_notify); 1393 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1394 1395 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1396 struct sk_buff *skb, int tid); 1397 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1398 struct sk_buff *skb) 1399 { 1400 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1401 ieee80211_tx_skb_tid(sdata, skb, 7); 1402 } 1403 1404 void ieee802_11_parse_elems(u8 *start, size_t len, 1405 struct ieee802_11_elems *elems); 1406 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1407 struct ieee802_11_elems *elems, 1408 u64 filter, u32 crc); 1409 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1410 enum ieee80211_band band); 1411 1412 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1413 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1414 void ieee80211_dynamic_ps_timer(unsigned long data); 1415 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1416 struct ieee80211_sub_if_data *sdata, 1417 int powersave); 1418 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1419 struct ieee80211_hdr *hdr); 1420 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1421 struct ieee80211_hdr *hdr, bool ack); 1422 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1423 1424 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1425 enum queue_stop_reason reason); 1426 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1427 enum queue_stop_reason reason); 1428 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1429 enum queue_stop_reason reason); 1430 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1431 enum queue_stop_reason reason); 1432 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1433 struct sk_buff *skb); 1434 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1435 struct sk_buff_head *skbs); 1436 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1437 struct sk_buff_head *skbs, 1438 void (*fn)(void *data), void *data); 1439 1440 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1441 u16 transaction, u16 auth_alg, 1442 u8 *extra, size_t extra_len, const u8 *bssid, 1443 const u8 *da, const u8 *key, u8 key_len, u8 key_idx); 1444 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1445 const u8 *ie, size_t ie_len, 1446 enum ieee80211_band band, u32 rate_mask, 1447 u8 channel); 1448 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1449 u8 *dst, u32 ratemask, 1450 const u8 *ssid, size_t ssid_len, 1451 const u8 *ie, size_t ie_len, 1452 bool directed); 1453 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1454 const u8 *ssid, size_t ssid_len, 1455 const u8 *ie, size_t ie_len, 1456 u32 ratemask, bool directed, bool no_cck); 1457 1458 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1459 const size_t supp_rates_len, 1460 const u8 *supp_rates); 1461 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1462 struct ieee802_11_elems *elems, 1463 enum ieee80211_band band); 1464 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1465 enum ieee80211_smps_mode smps_mode); 1466 void ieee80211_recalc_smps(struct ieee80211_local *local); 1467 1468 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1469 const u8 *ids, int n_ids, size_t offset); 1470 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1471 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1472 u16 cap); 1473 u8 *ieee80211_ie_build_ht_info(u8 *pos, 1474 struct ieee80211_sta_ht_cap *ht_cap, 1475 struct ieee80211_channel *channel, 1476 enum nl80211_channel_type channel_type); 1477 1478 /* internal work items */ 1479 void ieee80211_work_init(struct ieee80211_local *local); 1480 void ieee80211_add_work(struct ieee80211_work *wk); 1481 void free_work(struct ieee80211_work *wk); 1482 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1483 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1484 struct ieee80211_channel *chan, 1485 enum nl80211_channel_type channel_type, 1486 unsigned int duration, u64 *cookie); 1487 int ieee80211_wk_cancel_remain_on_channel( 1488 struct ieee80211_sub_if_data *sdata, u64 cookie); 1489 1490 /* channel management */ 1491 enum ieee80211_chan_mode { 1492 CHAN_MODE_UNDEFINED, 1493 CHAN_MODE_HOPPING, 1494 CHAN_MODE_FIXED, 1495 }; 1496 1497 enum ieee80211_chan_mode 1498 ieee80211_get_channel_mode(struct ieee80211_local *local, 1499 struct ieee80211_sub_if_data *ignore); 1500 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1501 struct ieee80211_sub_if_data *sdata, 1502 enum nl80211_channel_type chantype); 1503 enum nl80211_channel_type 1504 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info); 1505 enum nl80211_channel_type ieee80211_get_tx_channel_type( 1506 struct ieee80211_local *local, 1507 enum nl80211_channel_type channel_type); 1508 1509 #ifdef CONFIG_MAC80211_NOINLINE 1510 #define debug_noinline noinline 1511 #else 1512 #define debug_noinline 1513 #endif 1514 1515 #endif /* IEEE80211_I_H */ 1516