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_JIFFIES(x) (usecs_to_jiffies((x) * 1024)) 56 #define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x)) 57 58 #define IEEE80211_DEFAULT_UAPSD_QUEUES \ 59 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ 60 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ 61 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ 62 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 63 64 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 65 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 66 67 struct ieee80211_fragment_entry { 68 unsigned long first_frag_time; 69 unsigned int seq; 70 unsigned int rx_queue; 71 unsigned int last_frag; 72 unsigned int extra_len; 73 struct sk_buff_head skb_list; 74 int ccmp; /* Whether fragments were encrypted with CCMP */ 75 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 76 }; 77 78 79 struct ieee80211_bss { 80 /* don't want to look up all the time */ 81 size_t ssid_len; 82 u8 ssid[IEEE80211_MAX_SSID_LEN]; 83 84 u8 dtim_period; 85 86 bool wmm_used; 87 bool uapsd_supported; 88 89 unsigned long last_probe_resp; 90 91 #ifdef CONFIG_MAC80211_MESH 92 u8 *mesh_id; 93 size_t mesh_id_len; 94 u8 *mesh_cfg; 95 #endif 96 97 #define IEEE80211_MAX_SUPP_RATES 32 98 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 99 size_t supp_rates_len; 100 101 /* 102 * During association, we save an ERP value from a probe response so 103 * that we can feed ERP info to the driver when handling the 104 * association completes. these fields probably won't be up-to-date 105 * otherwise, you probably don't want to use them. 106 */ 107 bool has_erp_value; 108 u8 erp_value; 109 110 /* Keep track of the corruption of the last beacon/probe response. */ 111 u8 corrupt_data; 112 113 /* Keep track of what bits of information we have valid info for. */ 114 u8 valid_data; 115 }; 116 117 /** 118 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 119 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 120 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 121 * 122 * These are bss flags that are attached to a bss in the 123 * @corrupt_data field of &struct ieee80211_bss. 124 */ 125 enum ieee80211_bss_corrupt_data_flags { 126 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 127 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 128 }; 129 130 /** 131 * enum ieee80211_valid_data_flags - BSS valid data flags 132 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE 133 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 134 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 135 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 136 * 137 * These are bss flags that are attached to a bss in the 138 * @valid_data field of &struct ieee80211_bss. They show which parts 139 * of the data structure were recieved as a result of an un-corrupted 140 * beacon/probe response. 141 */ 142 enum ieee80211_bss_valid_data_flags { 143 IEEE80211_BSS_VALID_DTIM = BIT(0), 144 IEEE80211_BSS_VALID_WMM = BIT(1), 145 IEEE80211_BSS_VALID_RATES = BIT(2), 146 IEEE80211_BSS_VALID_ERP = BIT(3) 147 }; 148 149 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 150 { 151 #ifdef CONFIG_MAC80211_MESH 152 return bss->mesh_cfg; 153 #endif 154 return NULL; 155 } 156 157 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 158 { 159 #ifdef CONFIG_MAC80211_MESH 160 return bss->mesh_id; 161 #endif 162 return NULL; 163 } 164 165 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 166 { 167 #ifdef CONFIG_MAC80211_MESH 168 return bss->mesh_id_len; 169 #endif 170 return 0; 171 } 172 173 174 typedef unsigned __bitwise__ ieee80211_tx_result; 175 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 176 #define TX_DROP ((__force ieee80211_tx_result) 1u) 177 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 178 179 #define IEEE80211_TX_UNICAST BIT(1) 180 #define IEEE80211_TX_PS_BUFFERED BIT(2) 181 182 struct ieee80211_tx_data { 183 struct sk_buff *skb; 184 struct sk_buff_head skbs; 185 struct ieee80211_local *local; 186 struct ieee80211_sub_if_data *sdata; 187 struct sta_info *sta; 188 struct ieee80211_key *key; 189 190 struct ieee80211_channel *channel; 191 192 unsigned int flags; 193 }; 194 195 196 typedef unsigned __bitwise__ ieee80211_rx_result; 197 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 198 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 199 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 200 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 201 202 /** 203 * enum ieee80211_packet_rx_flags - packet RX flags 204 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed 205 * (incl. multicast frames) 206 * @IEEE80211_RX_IN_SCAN: received while scanning 207 * @IEEE80211_RX_FRAGMENTED: fragmented frame 208 * @IEEE80211_RX_AMSDU: a-MSDU packet 209 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 210 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 211 * 212 * These are per-frame flags that are attached to a frame in the 213 * @rx_flags field of &struct ieee80211_rx_status. 214 */ 215 enum ieee80211_packet_rx_flags { 216 IEEE80211_RX_IN_SCAN = BIT(0), 217 IEEE80211_RX_RA_MATCH = BIT(1), 218 IEEE80211_RX_FRAGMENTED = BIT(2), 219 IEEE80211_RX_AMSDU = BIT(3), 220 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 221 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 222 }; 223 224 /** 225 * enum ieee80211_rx_flags - RX data flags 226 * 227 * @IEEE80211_RX_CMNTR: received on cooked monitor already 228 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 229 * to cfg80211_report_obss_beacon(). 230 * 231 * These flags are used across handling multiple interfaces 232 * for a single frame. 233 */ 234 enum ieee80211_rx_flags { 235 IEEE80211_RX_CMNTR = BIT(0), 236 IEEE80211_RX_BEACON_REPORTED = BIT(1), 237 }; 238 239 struct ieee80211_rx_data { 240 struct sk_buff *skb; 241 struct ieee80211_local *local; 242 struct ieee80211_sub_if_data *sdata; 243 struct sta_info *sta; 244 struct ieee80211_key *key; 245 246 unsigned int flags; 247 248 /* 249 * Index into sequence numbers array, 0..16 250 * since the last (16) is used for non-QoS, 251 * will be 16 on non-QoS frames. 252 */ 253 int seqno_idx; 254 255 /* 256 * Index into the security IV/PN arrays, 0..16 257 * since the last (16) is used for CCMP-encrypted 258 * management frames, will be set to 16 on mgmt 259 * frames and 0 on non-QoS frames. 260 */ 261 int security_idx; 262 263 u32 tkip_iv32; 264 u16 tkip_iv16; 265 }; 266 267 struct beacon_data { 268 u8 *head, *tail; 269 int head_len, tail_len; 270 struct rcu_head rcu_head; 271 }; 272 273 struct ieee80211_if_ap { 274 struct beacon_data __rcu *beacon; 275 struct sk_buff __rcu *probe_resp; 276 277 struct list_head vlans; 278 279 /* yes, this looks ugly, but guarantees that we can later use 280 * bitmap_empty :) 281 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 282 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 283 struct sk_buff_head ps_bc_buf; 284 atomic_t num_sta_ps; /* number of stations in PS mode */ 285 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 286 int dtim_count; 287 bool dtim_bc_mc; 288 }; 289 290 struct ieee80211_if_wds { 291 struct sta_info *sta; 292 u8 remote_addr[ETH_ALEN]; 293 }; 294 295 struct ieee80211_if_vlan { 296 struct list_head list; 297 298 /* used for all tx if the VLAN is configured to 4-addr mode */ 299 struct sta_info __rcu *sta; 300 }; 301 302 struct mesh_stats { 303 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 304 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 305 __u32 fwded_frames; /* Mesh total forwarded frames */ 306 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 307 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 308 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 309 atomic_t estab_plinks; 310 }; 311 312 #define PREQ_Q_F_START 0x1 313 #define PREQ_Q_F_REFRESH 0x2 314 struct mesh_preq_queue { 315 struct list_head list; 316 u8 dst[ETH_ALEN]; 317 u8 flags; 318 }; 319 320 enum ieee80211_work_type { 321 IEEE80211_WORK_ABORT, 322 IEEE80211_WORK_REMAIN_ON_CHANNEL, 323 IEEE80211_WORK_OFFCHANNEL_TX, 324 }; 325 326 /** 327 * enum work_done_result - indicates what to do after work was done 328 * 329 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. 330 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and 331 * should be requeued. 332 */ 333 enum work_done_result { 334 WORK_DONE_DESTROY, 335 WORK_DONE_REQUEUE, 336 }; 337 338 struct ieee80211_work { 339 struct list_head list; 340 341 struct rcu_head rcu_head; 342 343 struct ieee80211_sub_if_data *sdata; 344 345 enum work_done_result (*done)(struct ieee80211_work *wk, 346 struct sk_buff *skb); 347 348 struct ieee80211_channel *chan; 349 enum nl80211_channel_type chan_type; 350 351 unsigned long timeout; 352 enum ieee80211_work_type type; 353 354 bool started; 355 356 union { 357 struct { 358 u32 duration; 359 } remain; 360 struct { 361 struct sk_buff *frame; 362 u32 wait; 363 bool status; 364 } offchan_tx; 365 }; 366 367 size_t data_len; 368 u8 data[]; 369 }; 370 371 /* flags used in struct ieee80211_if_managed.flags */ 372 enum ieee80211_sta_flags { 373 IEEE80211_STA_BEACON_POLL = BIT(0), 374 IEEE80211_STA_CONNECTION_POLL = BIT(1), 375 IEEE80211_STA_CONTROL_PORT = BIT(2), 376 IEEE80211_STA_DISABLE_11N = BIT(4), 377 IEEE80211_STA_CSA_RECEIVED = BIT(5), 378 IEEE80211_STA_MFP_ENABLED = BIT(6), 379 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 380 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 381 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 382 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 383 }; 384 385 struct ieee80211_mgd_auth_data { 386 struct cfg80211_bss *bss; 387 unsigned long timeout; 388 int tries; 389 u16 algorithm, expected_transaction; 390 391 u8 key[WLAN_KEY_LEN_WEP104]; 392 u8 key_len, key_idx; 393 bool done; 394 395 size_t ie_len; 396 u8 ie[]; 397 }; 398 399 struct ieee80211_mgd_assoc_data { 400 struct cfg80211_bss *bss; 401 const u8 *supp_rates; 402 const u8 *ht_operation_ie; 403 404 unsigned long timeout; 405 int tries; 406 407 u16 capability; 408 u8 prev_bssid[ETH_ALEN]; 409 u8 ssid[IEEE80211_MAX_SSID_LEN]; 410 u8 ssid_len; 411 u8 supp_rates_len; 412 bool wmm, uapsd; 413 bool have_beacon; 414 bool sent_assoc; 415 bool synced; 416 417 size_t ie_len; 418 u8 ie[]; 419 }; 420 421 struct ieee80211_if_managed { 422 struct timer_list timer; 423 struct timer_list conn_mon_timer; 424 struct timer_list bcn_mon_timer; 425 struct timer_list chswitch_timer; 426 struct work_struct monitor_work; 427 struct work_struct chswitch_work; 428 struct work_struct beacon_connection_loss_work; 429 430 unsigned long beacon_timeout; 431 unsigned long probe_timeout; 432 int probe_send_count; 433 bool nullfunc_failed; 434 435 struct mutex mtx; 436 struct cfg80211_bss *associated; 437 struct ieee80211_mgd_auth_data *auth_data; 438 struct ieee80211_mgd_assoc_data *assoc_data; 439 440 u8 bssid[ETH_ALEN]; 441 442 u16 aid; 443 444 unsigned long timers_running; /* used for quiesce/restart */ 445 bool powersave; /* powersave requested for this iface */ 446 bool broken_ap; /* AP is broken -- turn off powersave */ 447 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 448 ap_smps, /* smps mode AP thinks we're in */ 449 driver_smps_mode; /* smps mode request */ 450 451 struct work_struct request_smps_work; 452 453 unsigned int flags; 454 455 bool beacon_crc_valid; 456 u32 beacon_crc; 457 458 enum { 459 IEEE80211_MFP_DISABLED, 460 IEEE80211_MFP_OPTIONAL, 461 IEEE80211_MFP_REQUIRED 462 } mfp; /* management frame protection */ 463 464 /* 465 * Bitmask of enabled u-apsd queues, 466 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 467 * to take effect. 468 */ 469 unsigned int uapsd_queues; 470 471 /* 472 * Maximum number of buffered frames AP can deliver during a 473 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 474 * Needs a new association to take effect. 475 */ 476 unsigned int uapsd_max_sp_len; 477 478 int wmm_last_param_set; 479 480 u8 use_4addr; 481 482 /* Signal strength from the last Beacon frame in the current BSS. */ 483 int last_beacon_signal; 484 485 /* 486 * Weighted average of the signal strength from Beacon frames in the 487 * current BSS. This is in units of 1/16 of the signal unit to maintain 488 * accuracy and to speed up calculations, i.e., the value need to be 489 * divided by 16 to get the actual value. 490 */ 491 int ave_beacon_signal; 492 493 /* 494 * Number of Beacon frames used in ave_beacon_signal. This can be used 495 * to avoid generating less reliable cqm events that would be based 496 * only on couple of received frames. 497 */ 498 unsigned int count_beacon_signal; 499 500 /* 501 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 502 * that triggered a cqm event. 0 indicates that no event has been 503 * generated for the current association. 504 */ 505 int last_cqm_event_signal; 506 507 /* 508 * State variables for keeping track of RSSI of the AP currently 509 * connected to and informing driver when RSSI has gone 510 * below/above a certain threshold. 511 */ 512 int rssi_min_thold, rssi_max_thold; 513 int last_ave_beacon_signal; 514 515 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 516 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 517 }; 518 519 struct ieee80211_if_ibss { 520 struct timer_list timer; 521 522 struct mutex mtx; 523 524 unsigned long last_scan_completed; 525 526 u32 basic_rates; 527 528 bool timer_running; 529 530 bool fixed_bssid; 531 bool fixed_channel; 532 bool privacy; 533 534 bool control_port; 535 536 u8 bssid[ETH_ALEN] __aligned(2); 537 u8 ssid[IEEE80211_MAX_SSID_LEN]; 538 u8 ssid_len, ie_len; 539 u8 *ie; 540 struct ieee80211_channel *channel; 541 enum nl80211_channel_type channel_type; 542 543 unsigned long ibss_join_req; 544 /* probe response/beacon for IBSS */ 545 struct sk_buff __rcu *presp; 546 struct sk_buff *skb; 547 548 spinlock_t incomplete_lock; 549 struct list_head incomplete_stations; 550 551 enum { 552 IEEE80211_IBSS_MLME_SEARCH, 553 IEEE80211_IBSS_MLME_JOINED, 554 } state; 555 }; 556 557 /** 558 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 559 * 560 * these declarations define the interface, which enables 561 * vendor-specific mesh synchronization 562 * 563 */ 564 struct ieee802_11_elems; 565 struct ieee80211_mesh_sync_ops { 566 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 567 u16 stype, 568 struct ieee80211_mgmt *mgmt, 569 struct ieee802_11_elems *elems, 570 struct ieee80211_rx_status *rx_status); 571 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata); 572 /* add other framework functions here */ 573 }; 574 575 struct ieee80211_if_mesh { 576 struct timer_list housekeeping_timer; 577 struct timer_list mesh_path_timer; 578 struct timer_list mesh_path_root_timer; 579 580 unsigned long timers_running; 581 582 unsigned long wrkq_flags; 583 584 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 585 size_t mesh_id_len; 586 /* Active Path Selection Protocol Identifier */ 587 u8 mesh_pp_id; 588 /* Active Path Selection Metric Identifier */ 589 u8 mesh_pm_id; 590 /* Congestion Control Mode Identifier */ 591 u8 mesh_cc_id; 592 /* Synchronization Protocol Identifier */ 593 u8 mesh_sp_id; 594 /* Authentication Protocol Identifier */ 595 u8 mesh_auth_id; 596 /* Local mesh Sequence Number */ 597 u32 sn; 598 /* Last used PREQ ID */ 599 u32 preq_id; 600 atomic_t mpaths; 601 /* Timestamp of last SN update */ 602 unsigned long last_sn_update; 603 /* Time when it's ok to send next PERR */ 604 unsigned long next_perr; 605 /* Timestamp of last PREQ sent */ 606 unsigned long last_preq; 607 struct mesh_rmc *rmc; 608 spinlock_t mesh_preq_queue_lock; 609 struct mesh_preq_queue preq_queue; 610 int preq_queue_len; 611 struct mesh_stats mshstats; 612 struct mesh_config mshcfg; 613 u32 mesh_seqnum; 614 bool accepting_plinks; 615 int num_gates; 616 const u8 *ie; 617 u8 ie_len; 618 enum { 619 IEEE80211_MESH_SEC_NONE = 0x0, 620 IEEE80211_MESH_SEC_AUTHED = 0x1, 621 IEEE80211_MESH_SEC_SECURED = 0x2, 622 } security; 623 /* Extensible Synchronization Framework */ 624 struct ieee80211_mesh_sync_ops *sync_ops; 625 s64 sync_offset_clockdrift_max; 626 spinlock_t sync_offset_lock; 627 bool adjusting_tbtt; 628 }; 629 630 #ifdef CONFIG_MAC80211_MESH 631 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 632 do { (msh)->mshstats.name++; } while (0) 633 #else 634 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 635 do { } while (0) 636 #endif 637 638 /** 639 * enum ieee80211_sub_if_data_flags - virtual interface flags 640 * 641 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 642 * @IEEE80211_SDATA_PROMISC: interface is promisc 643 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 644 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 645 * associated stations and deliver multicast frames both 646 * back to wireless media and to the local net stack. 647 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 648 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 649 */ 650 enum ieee80211_sub_if_data_flags { 651 IEEE80211_SDATA_ALLMULTI = BIT(0), 652 IEEE80211_SDATA_PROMISC = BIT(1), 653 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 654 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 655 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 656 IEEE80211_SDATA_IN_DRIVER = BIT(5), 657 }; 658 659 /** 660 * enum ieee80211_sdata_state_bits - virtual interface state bits 661 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 662 * mirrors netif_running() but is separate for interface type 663 * change handling while the interface is up 664 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 665 * mode, so queues are stopped 666 */ 667 enum ieee80211_sdata_state_bits { 668 SDATA_STATE_RUNNING, 669 SDATA_STATE_OFFCHANNEL, 670 }; 671 672 struct ieee80211_sub_if_data { 673 struct list_head list; 674 675 struct wireless_dev wdev; 676 677 /* keys */ 678 struct list_head key_list; 679 680 /* count for keys needing tailroom space allocation */ 681 int crypto_tx_tailroom_needed_cnt; 682 683 struct net_device *dev; 684 struct ieee80211_local *local; 685 686 unsigned int flags; 687 688 unsigned long state; 689 690 int drop_unencrypted; 691 692 char name[IFNAMSIZ]; 693 694 /* to detect idle changes */ 695 bool old_idle; 696 697 /* Fragment table for host-based reassembly */ 698 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 699 unsigned int fragment_next; 700 701 /* TID bitmap for NoAck policy */ 702 u16 noack_map; 703 704 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 705 struct ieee80211_key __rcu *default_unicast_key; 706 struct ieee80211_key __rcu *default_multicast_key; 707 struct ieee80211_key __rcu *default_mgmt_key; 708 709 u16 sequence_number; 710 __be16 control_port_protocol; 711 bool control_port_no_encrypt; 712 713 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 714 715 struct work_struct work; 716 struct sk_buff_head skb_queue; 717 718 bool arp_filter_state; 719 720 /* 721 * AP this belongs to: self in AP mode and 722 * corresponding AP in VLAN mode, NULL for 723 * all others (might be needed later in IBSS) 724 */ 725 struct ieee80211_if_ap *bss; 726 727 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 728 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; 729 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 730 731 union { 732 struct ieee80211_if_ap ap; 733 struct ieee80211_if_wds wds; 734 struct ieee80211_if_vlan vlan; 735 struct ieee80211_if_managed mgd; 736 struct ieee80211_if_ibss ibss; 737 struct ieee80211_if_mesh mesh; 738 u32 mntr_flags; 739 } u; 740 741 #ifdef CONFIG_MAC80211_DEBUGFS 742 struct { 743 struct dentry *dir; 744 struct dentry *subdir_stations; 745 struct dentry *default_unicast_key; 746 struct dentry *default_multicast_key; 747 struct dentry *default_mgmt_key; 748 } debugfs; 749 #endif 750 /* must be last, dynamically sized area in this! */ 751 struct ieee80211_vif vif; 752 }; 753 754 static inline 755 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 756 { 757 return container_of(p, struct ieee80211_sub_if_data, vif); 758 } 759 760 enum sdata_queue_type { 761 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, 762 IEEE80211_SDATA_QUEUE_AGG_START = 1, 763 IEEE80211_SDATA_QUEUE_AGG_STOP = 2, 764 }; 765 766 enum { 767 IEEE80211_RX_MSG = 1, 768 IEEE80211_TX_STATUS_MSG = 2, 769 IEEE80211_EOSP_MSG = 3, 770 }; 771 772 struct skb_eosp_msg_data { 773 u8 sta[ETH_ALEN], iface[ETH_ALEN]; 774 }; 775 776 enum queue_stop_reason { 777 IEEE80211_QUEUE_STOP_REASON_DRIVER, 778 IEEE80211_QUEUE_STOP_REASON_PS, 779 IEEE80211_QUEUE_STOP_REASON_CSA, 780 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 781 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 782 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 783 }; 784 785 #ifdef CONFIG_MAC80211_LEDS 786 struct tpt_led_trigger { 787 struct led_trigger trig; 788 char name[32]; 789 const struct ieee80211_tpt_blink *blink_table; 790 unsigned int blink_table_len; 791 struct timer_list timer; 792 unsigned long prev_traffic; 793 unsigned long tx_bytes, rx_bytes; 794 unsigned int active, want; 795 bool running; 796 }; 797 #endif 798 799 /** 800 * mac80211 scan flags - currently active scan mode 801 * 802 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 803 * well be on the operating channel 804 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 805 * determine if we are on the operating channel or not 806 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 807 * channel. This should not interrupt normal traffic. 808 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 809 * that the scan completed. 810 * @SCAN_ABORTED: Set for our scan work function when the driver reported 811 * a scan complete for an aborted scan. 812 */ 813 enum { 814 SCAN_SW_SCANNING, 815 SCAN_HW_SCANNING, 816 SCAN_ONCHANNEL_SCANNING, 817 SCAN_COMPLETED, 818 SCAN_ABORTED, 819 }; 820 821 /** 822 * enum mac80211_scan_state - scan state machine states 823 * 824 * @SCAN_DECISION: Main entry point to the scan state machine, this state 825 * determines if we should keep on scanning or switch back to the 826 * operating channel 827 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 828 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 829 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 830 * send out data 831 * @SCAN_RESUME: Resume the scan and scan the next channel 832 */ 833 enum mac80211_scan_state { 834 SCAN_DECISION, 835 SCAN_SET_CHANNEL, 836 SCAN_SEND_PROBE, 837 SCAN_SUSPEND, 838 SCAN_RESUME, 839 }; 840 841 struct ieee80211_local { 842 /* embed the driver visible part. 843 * don't cast (use the static inlines below), but we keep 844 * it first anyway so they become a no-op */ 845 struct ieee80211_hw hw; 846 847 const struct ieee80211_ops *ops; 848 849 /* 850 * work stuff, potentially off-channel (in the future) 851 */ 852 struct list_head work_list; 853 struct timer_list work_timer; 854 struct work_struct work_work; 855 856 /* 857 * private workqueue to mac80211. mac80211 makes this accessible 858 * via ieee80211_queue_work() 859 */ 860 struct workqueue_struct *workqueue; 861 862 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 863 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 864 spinlock_t queue_stop_reason_lock; 865 866 int open_count; 867 int monitors, cooked_mntrs; 868 /* number of interfaces with corresponding FIF_ flags */ 869 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 870 fif_probe_req; 871 int probe_req_reg; 872 unsigned int filter_flags; /* FIF_* */ 873 874 bool wiphy_ciphers_allocated; 875 876 /* protects the aggregated multicast list and filter calls */ 877 spinlock_t filter_lock; 878 879 /* used for uploading changed mc list */ 880 struct work_struct reconfig_filter; 881 882 /* used to reconfigure hardware SM PS */ 883 struct work_struct recalc_smps; 884 885 /* aggregated multicast list */ 886 struct netdev_hw_addr_list mc_list; 887 888 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 889 890 /* 891 * suspended is true if we finished all the suspend _and_ we have 892 * not yet come up from resume. This is to be used by mac80211 893 * to ensure driver sanity during suspend and mac80211's own 894 * sanity. It can eventually be used for WoW as well. 895 */ 896 bool suspended; 897 898 /* 899 * Resuming is true while suspended, but when we're reprogramming the 900 * hardware -- at that time it's allowed to use ieee80211_queue_work() 901 * again even though some other parts of the stack are still suspended 902 * and we still drop received frames to avoid waking the stack. 903 */ 904 bool resuming; 905 906 /* 907 * quiescing is true during the suspend process _only_ to 908 * ease timer cancelling etc. 909 */ 910 bool quiescing; 911 912 /* device is started */ 913 bool started; 914 915 /* wowlan is enabled -- don't reconfig on resume */ 916 bool wowlan; 917 918 int tx_headroom; /* required headroom for hardware/radiotap */ 919 920 /* Tasklet and skb queue to process calls from IRQ mode. All frames 921 * added to skb_queue will be processed, but frames in 922 * skb_queue_unreliable may be dropped if the total length of these 923 * queues increases over the limit. */ 924 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 925 struct tasklet_struct tasklet; 926 struct sk_buff_head skb_queue; 927 struct sk_buff_head skb_queue_unreliable; 928 929 /* 930 * Internal FIFO queue which is shared between multiple rx path 931 * stages. Its main task is to provide a serialization mechanism, 932 * so all rx handlers can enjoy having exclusive access to their 933 * private data structures. 934 */ 935 struct sk_buff_head rx_skb_queue; 936 bool running_rx_handler; /* protected by rx_skb_queue.lock */ 937 938 /* Station data */ 939 /* 940 * The mutex only protects the list, hash table and 941 * counter, reads are done with RCU. 942 */ 943 struct mutex sta_mtx; 944 spinlock_t tim_lock; 945 unsigned long num_sta; 946 struct list_head sta_list; 947 struct sta_info __rcu *sta_hash[STA_HASH_SIZE]; 948 struct timer_list sta_cleanup; 949 int sta_generation; 950 951 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 952 struct tasklet_struct tx_pending_tasklet; 953 954 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 955 956 /* number of interfaces with corresponding IFF_ flags */ 957 atomic_t iff_allmultis, iff_promiscs; 958 959 struct rate_control_ref *rate_ctrl; 960 961 struct crypto_cipher *wep_tx_tfm; 962 struct crypto_cipher *wep_rx_tfm; 963 u32 wep_iv; 964 965 /* see iface.c */ 966 struct list_head interfaces; 967 struct mutex iflist_mtx; 968 969 /* 970 * Key mutex, protects sdata's key_list and sta_info's 971 * key pointers (write access, they're RCU.) 972 */ 973 struct mutex key_mtx; 974 975 /* mutex for scan and work locking */ 976 struct mutex mtx; 977 978 /* Scanning and BSS list */ 979 unsigned long scanning; 980 struct cfg80211_ssid scan_ssid; 981 struct cfg80211_scan_request *int_scan_req; 982 struct cfg80211_scan_request *scan_req, *hw_scan_req; 983 struct ieee80211_channel *scan_channel; 984 enum ieee80211_band hw_scan_band; 985 int scan_channel_idx; 986 int scan_ies_len; 987 988 bool sched_scanning; 989 struct ieee80211_sched_scan_ies sched_scan_ies; 990 struct work_struct sched_scan_stopped_work; 991 992 unsigned long leave_oper_channel_time; 993 enum mac80211_scan_state next_scan_state; 994 struct delayed_work scan_work; 995 struct ieee80211_sub_if_data *scan_sdata; 996 enum nl80211_channel_type _oper_channel_type; 997 struct ieee80211_channel *oper_channel, *csa_channel; 998 999 /* Temporary remain-on-channel for off-channel operations */ 1000 struct ieee80211_channel *tmp_channel; 1001 enum nl80211_channel_type tmp_channel_type; 1002 1003 /* SNMP counters */ 1004 /* dot11CountersTable */ 1005 u32 dot11TransmittedFragmentCount; 1006 u32 dot11MulticastTransmittedFrameCount; 1007 u32 dot11FailedCount; 1008 u32 dot11RetryCount; 1009 u32 dot11MultipleRetryCount; 1010 u32 dot11FrameDuplicateCount; 1011 u32 dot11ReceivedFragmentCount; 1012 u32 dot11MulticastReceivedFrameCount; 1013 u32 dot11TransmittedFrameCount; 1014 1015 #ifdef CONFIG_MAC80211_LEDS 1016 int tx_led_counter, rx_led_counter; 1017 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 1018 struct tpt_led_trigger *tpt_led_trigger; 1019 char tx_led_name[32], rx_led_name[32], 1020 assoc_led_name[32], radio_led_name[32]; 1021 #endif 1022 1023 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1024 /* TX/RX handler statistics */ 1025 unsigned int tx_handlers_drop; 1026 unsigned int tx_handlers_queued; 1027 unsigned int tx_handlers_drop_unencrypted; 1028 unsigned int tx_handlers_drop_fragment; 1029 unsigned int tx_handlers_drop_wep; 1030 unsigned int tx_handlers_drop_not_assoc; 1031 unsigned int tx_handlers_drop_unauth_port; 1032 unsigned int rx_handlers_drop; 1033 unsigned int rx_handlers_queued; 1034 unsigned int rx_handlers_drop_nullfunc; 1035 unsigned int rx_handlers_drop_defrag; 1036 unsigned int rx_handlers_drop_short; 1037 unsigned int rx_handlers_drop_passive_scan; 1038 unsigned int tx_expand_skb_head; 1039 unsigned int tx_expand_skb_head_cloned; 1040 unsigned int rx_expand_skb_head; 1041 unsigned int rx_expand_skb_head2; 1042 unsigned int rx_handlers_fragments; 1043 unsigned int tx_status_drop; 1044 #define I802_DEBUG_INC(c) (c)++ 1045 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1046 #define I802_DEBUG_INC(c) do { } while (0) 1047 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1048 1049 1050 int total_ps_buffered; /* total number of all buffered unicast and 1051 * multicast packets for power saving stations 1052 */ 1053 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 1054 1055 bool pspolling; 1056 bool offchannel_ps_enabled; 1057 /* 1058 * PS can only be enabled when we have exactly one managed 1059 * interface (and monitors) in PS, this then points there. 1060 */ 1061 struct ieee80211_sub_if_data *ps_sdata; 1062 struct work_struct dynamic_ps_enable_work; 1063 struct work_struct dynamic_ps_disable_work; 1064 struct timer_list dynamic_ps_timer; 1065 struct notifier_block network_latency_notifier; 1066 struct notifier_block ifa_notifier; 1067 1068 /* 1069 * The dynamic ps timeout configured from user space via WEXT - 1070 * this will override whatever chosen by mac80211 internally. 1071 */ 1072 int dynamic_ps_forced_timeout; 1073 int dynamic_ps_user_timeout; 1074 bool disable_dynamic_ps; 1075 1076 int user_power_level; /* in dBm */ 1077 int power_constr_level; /* in dBm */ 1078 1079 enum ieee80211_smps_mode smps_mode; 1080 1081 struct work_struct restart_work; 1082 1083 #ifdef CONFIG_MAC80211_DEBUGFS 1084 struct local_debugfsdentries { 1085 struct dentry *rcdir; 1086 struct dentry *keys; 1087 } debugfs; 1088 #endif 1089 1090 struct ieee80211_channel *hw_roc_channel; 1091 struct net_device *hw_roc_dev; 1092 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status; 1093 struct work_struct hw_roc_start, hw_roc_done; 1094 enum nl80211_channel_type hw_roc_channel_type; 1095 unsigned int hw_roc_duration; 1096 u32 hw_roc_cookie; 1097 bool hw_roc_for_tx; 1098 1099 struct idr ack_status_frames; 1100 spinlock_t ack_status_lock; 1101 1102 /* dummy netdev for use w/ NAPI */ 1103 struct net_device napi_dev; 1104 1105 struct napi_struct napi; 1106 1107 /* virtual monitor interface */ 1108 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1109 }; 1110 1111 static inline struct ieee80211_sub_if_data * 1112 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1113 { 1114 return netdev_priv(dev); 1115 } 1116 1117 /* this struct represents 802.11n's RA/TID combination */ 1118 struct ieee80211_ra_tid { 1119 u8 ra[ETH_ALEN]; 1120 u16 tid; 1121 }; 1122 1123 /* Parsed Information Elements */ 1124 struct ieee802_11_elems { 1125 u8 *ie_start; 1126 size_t total_len; 1127 1128 /* pointers to IEs */ 1129 u8 *ssid; 1130 u8 *supp_rates; 1131 u8 *fh_params; 1132 u8 *ds_params; 1133 u8 *cf_params; 1134 struct ieee80211_tim_ie *tim; 1135 u8 *ibss_params; 1136 u8 *challenge; 1137 u8 *wpa; 1138 u8 *rsn; 1139 u8 *erp_info; 1140 u8 *ext_supp_rates; 1141 u8 *wmm_info; 1142 u8 *wmm_param; 1143 struct ieee80211_ht_cap *ht_cap_elem; 1144 struct ieee80211_ht_operation *ht_operation; 1145 struct ieee80211_meshconf_ie *mesh_config; 1146 u8 *mesh_id; 1147 u8 *peering; 1148 u8 *preq; 1149 u8 *prep; 1150 u8 *perr; 1151 struct ieee80211_rann_ie *rann; 1152 u8 *ch_switch_elem; 1153 u8 *country_elem; 1154 u8 *pwr_constr_elem; 1155 u8 *quiet_elem; /* first quite element */ 1156 u8 *timeout_int; 1157 1158 /* length of them, respectively */ 1159 u8 ssid_len; 1160 u8 supp_rates_len; 1161 u8 fh_params_len; 1162 u8 ds_params_len; 1163 u8 cf_params_len; 1164 u8 tim_len; 1165 u8 ibss_params_len; 1166 u8 challenge_len; 1167 u8 wpa_len; 1168 u8 rsn_len; 1169 u8 erp_info_len; 1170 u8 ext_supp_rates_len; 1171 u8 wmm_info_len; 1172 u8 wmm_param_len; 1173 u8 mesh_id_len; 1174 u8 peering_len; 1175 u8 preq_len; 1176 u8 prep_len; 1177 u8 perr_len; 1178 u8 ch_switch_elem_len; 1179 u8 country_elem_len; 1180 u8 pwr_constr_elem_len; 1181 u8 quiet_elem_len; 1182 u8 num_of_quiet_elem; /* can be more the one */ 1183 u8 timeout_int_len; 1184 1185 /* whether a parse error occurred while retrieving these elements */ 1186 bool parse_error; 1187 }; 1188 1189 static inline struct ieee80211_local *hw_to_local( 1190 struct ieee80211_hw *hw) 1191 { 1192 return container_of(hw, struct ieee80211_local, hw); 1193 } 1194 1195 1196 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1197 { 1198 return ether_addr_equal(raddr, addr) || 1199 is_broadcast_ether_addr(raddr); 1200 } 1201 1202 1203 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1204 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1205 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1206 u32 changed); 1207 void ieee80211_configure_filter(struct ieee80211_local *local); 1208 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1209 1210 /* STA code */ 1211 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1212 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1213 struct cfg80211_auth_request *req); 1214 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1215 struct cfg80211_assoc_request *req); 1216 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1217 struct cfg80211_deauth_request *req); 1218 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1219 struct cfg80211_disassoc_request *req); 1220 void ieee80211_send_pspoll(struct ieee80211_local *local, 1221 struct ieee80211_sub_if_data *sdata); 1222 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 1223 int ieee80211_max_network_latency(struct notifier_block *nb, 1224 unsigned long data, void *dummy); 1225 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1226 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1227 struct ieee80211_channel_sw_ie *sw_elem, 1228 struct ieee80211_bss *bss, 1229 u64 timestamp); 1230 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); 1231 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1232 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1233 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1234 struct sk_buff *skb); 1235 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1236 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1237 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1238 1239 /* IBSS code */ 1240 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1241 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1242 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1243 const u8 *bssid, const u8 *addr, u32 supp_rates); 1244 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1245 struct cfg80211_ibss_params *params); 1246 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1247 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); 1248 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); 1249 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1250 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1251 struct sk_buff *skb); 1252 1253 /* mesh code */ 1254 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1255 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1256 struct sk_buff *skb); 1257 1258 /* scan/BSS handling */ 1259 void ieee80211_scan_work(struct work_struct *work); 1260 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 1261 const u8 *ssid, u8 ssid_len, 1262 struct ieee80211_channel *chan); 1263 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1264 struct cfg80211_scan_request *req); 1265 void ieee80211_scan_cancel(struct ieee80211_local *local); 1266 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1267 ieee80211_rx_result 1268 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1269 1270 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1271 struct ieee80211_bss * 1272 ieee80211_bss_info_update(struct ieee80211_local *local, 1273 struct ieee80211_rx_status *rx_status, 1274 struct ieee80211_mgmt *mgmt, 1275 size_t len, 1276 struct ieee802_11_elems *elems, 1277 struct ieee80211_channel *channel, 1278 bool beacon); 1279 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1280 struct ieee80211_bss *bss); 1281 1282 /* scheduled scan handling */ 1283 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1284 struct cfg80211_sched_scan_request *req); 1285 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata); 1286 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1287 1288 /* off-channel helpers */ 1289 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, 1290 bool offchannel_ps_enable); 1291 void ieee80211_offchannel_return(struct ieee80211_local *local, 1292 bool offchannel_ps_disable); 1293 void ieee80211_hw_roc_setup(struct ieee80211_local *local); 1294 1295 /* interface handling */ 1296 int ieee80211_iface_init(void); 1297 void ieee80211_iface_exit(void); 1298 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1299 struct net_device **new_dev, enum nl80211_iftype type, 1300 struct vif_params *params); 1301 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1302 enum nl80211_iftype type); 1303 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1304 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1305 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 1306 void ieee80211_recalc_idle(struct ieee80211_local *local); 1307 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1308 const int offset); 1309 1310 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1311 { 1312 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1313 } 1314 1315 /* tx handling */ 1316 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1317 void ieee80211_tx_pending(unsigned long data); 1318 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1319 struct net_device *dev); 1320 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1321 struct net_device *dev); 1322 1323 /* HT */ 1324 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1325 struct ieee80211_sta_ht_cap *ht_cap); 1326 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1327 struct ieee80211_supported_band *sband, 1328 struct ieee80211_ht_cap *ht_cap_ie, 1329 struct ieee80211_sta_ht_cap *ht_cap); 1330 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1331 const u8 *da, u16 tid, 1332 u16 initiator, u16 reason_code); 1333 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1334 enum ieee80211_smps_mode smps, const u8 *da, 1335 const u8 *bssid); 1336 void ieee80211_request_smps_work(struct work_struct *work); 1337 1338 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1339 u16 initiator, u16 reason, bool stop); 1340 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1341 u16 initiator, u16 reason, bool stop); 1342 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx); 1343 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1344 struct sta_info *sta, 1345 struct ieee80211_mgmt *mgmt, size_t len); 1346 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1347 struct sta_info *sta, 1348 struct ieee80211_mgmt *mgmt, 1349 size_t len); 1350 void ieee80211_process_addba_request(struct ieee80211_local *local, 1351 struct sta_info *sta, 1352 struct ieee80211_mgmt *mgmt, 1353 size_t len); 1354 1355 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1356 enum ieee80211_back_parties initiator, 1357 bool tx); 1358 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1359 enum ieee80211_back_parties initiator, 1360 bool tx); 1361 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); 1362 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); 1363 void ieee80211_ba_session_work(struct work_struct *work); 1364 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1365 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1366 1367 /* Spectrum management */ 1368 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1369 struct ieee80211_mgmt *mgmt, 1370 size_t len); 1371 1372 /* Suspend/resume and hw reconfiguration */ 1373 int ieee80211_reconfig(struct ieee80211_local *local); 1374 void ieee80211_stop_device(struct ieee80211_local *local); 1375 1376 #ifdef CONFIG_PM 1377 int __ieee80211_suspend(struct ieee80211_hw *hw, 1378 struct cfg80211_wowlan *wowlan); 1379 1380 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1381 { 1382 struct ieee80211_local *local = hw_to_local(hw); 1383 1384 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 1385 "%s: resume with hardware scan still in progress\n", 1386 wiphy_name(hw->wiphy)); 1387 1388 return ieee80211_reconfig(hw_to_local(hw)); 1389 } 1390 #else 1391 static inline int __ieee80211_suspend(struct ieee80211_hw *hw, 1392 struct cfg80211_wowlan *wowlan) 1393 { 1394 return 0; 1395 } 1396 1397 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1398 { 1399 return 0; 1400 } 1401 #endif 1402 1403 /* utility functions/constants */ 1404 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1405 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1406 enum nl80211_iftype type); 1407 int ieee80211_frame_duration(enum ieee80211_band band, size_t len, 1408 int rate, int erp, int short_preamble); 1409 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1410 struct ieee80211_hdr *hdr, const u8 *tsc, 1411 gfp_t gfp); 1412 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1413 bool bss_notify); 1414 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); 1415 1416 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1417 struct sk_buff *skb, int tid); 1418 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1419 struct sk_buff *skb) 1420 { 1421 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1422 ieee80211_tx_skb_tid(sdata, skb, 7); 1423 } 1424 1425 void ieee802_11_parse_elems(u8 *start, size_t len, 1426 struct ieee802_11_elems *elems); 1427 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1428 struct ieee802_11_elems *elems, 1429 u64 filter, u32 crc); 1430 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1431 enum ieee80211_band band); 1432 1433 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1434 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1435 void ieee80211_dynamic_ps_timer(unsigned long data); 1436 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1437 struct ieee80211_sub_if_data *sdata, 1438 int powersave); 1439 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1440 struct ieee80211_hdr *hdr); 1441 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1442 struct ieee80211_hdr *hdr, bool ack); 1443 void ieee80211_beacon_connection_loss_work(struct work_struct *work); 1444 1445 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1446 enum queue_stop_reason reason); 1447 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1448 enum queue_stop_reason reason); 1449 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1450 enum queue_stop_reason reason); 1451 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1452 enum queue_stop_reason reason); 1453 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1454 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1455 struct sk_buff *skb); 1456 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local, 1457 struct sk_buff_head *skbs, 1458 void (*fn)(void *data), void *data); 1459 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1460 struct sk_buff_head *skbs) 1461 { 1462 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL); 1463 } 1464 1465 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1466 u16 transaction, u16 auth_alg, 1467 u8 *extra, size_t extra_len, const u8 *bssid, 1468 const u8 *da, const u8 *key, u8 key_len, u8 key_idx); 1469 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1470 const u8 *ie, size_t ie_len, 1471 enum ieee80211_band band, u32 rate_mask, 1472 u8 channel); 1473 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 1474 u8 *dst, u32 ratemask, 1475 const u8 *ssid, size_t ssid_len, 1476 const u8 *ie, size_t ie_len, 1477 bool directed); 1478 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1479 const u8 *ssid, size_t ssid_len, 1480 const u8 *ie, size_t ie_len, 1481 u32 ratemask, bool directed, bool no_cck); 1482 1483 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1484 const size_t supp_rates_len, 1485 const u8 *supp_rates); 1486 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1487 struct ieee802_11_elems *elems, 1488 enum ieee80211_band band, u32 *basic_rates); 1489 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1490 enum ieee80211_smps_mode smps_mode); 1491 void ieee80211_recalc_smps(struct ieee80211_local *local); 1492 1493 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 1494 const u8 *ids, int n_ids, size_t offset); 1495 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 1496 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1497 u16 cap); 1498 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 1499 struct ieee80211_channel *channel, 1500 enum nl80211_channel_type channel_type, 1501 u16 prot_mode); 1502 1503 /* internal work items */ 1504 void ieee80211_work_init(struct ieee80211_local *local); 1505 void ieee80211_add_work(struct ieee80211_work *wk); 1506 void free_work(struct ieee80211_work *wk); 1507 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); 1508 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, 1509 struct ieee80211_channel *chan, 1510 enum nl80211_channel_type channel_type, 1511 unsigned int duration, u64 *cookie); 1512 int ieee80211_wk_cancel_remain_on_channel( 1513 struct ieee80211_sub_if_data *sdata, u64 cookie); 1514 1515 /* channel management */ 1516 enum ieee80211_chan_mode { 1517 CHAN_MODE_UNDEFINED, 1518 CHAN_MODE_HOPPING, 1519 CHAN_MODE_FIXED, 1520 }; 1521 1522 enum ieee80211_chan_mode 1523 ieee80211_get_channel_mode(struct ieee80211_local *local, 1524 struct ieee80211_sub_if_data *ignore); 1525 bool ieee80211_set_channel_type(struct ieee80211_local *local, 1526 struct ieee80211_sub_if_data *sdata, 1527 enum nl80211_channel_type chantype); 1528 enum nl80211_channel_type 1529 ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper); 1530 1531 #ifdef CONFIG_MAC80211_NOINLINE 1532 #define debug_noinline noinline 1533 #else 1534 #define debug_noinline 1535 #endif 1536 1537 #endif /* IEEE80211_I_H */ 1538