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 2007-2008 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 <net/cfg80211.h> 27 #include <net/iw_handler.h> 28 #include <net/mac80211.h> 29 #include "key.h" 30 #include "sta_info.h" 31 32 struct ieee80211_local; 33 34 /* Maximum number of broadcast/multicast frames to buffer when some of the 35 * associated stations are using power saving. */ 36 #define AP_MAX_BC_BUFFER 128 37 38 /* Maximum number of frames buffered to all STAs, including multicast frames. 39 * Note: increasing this limit increases the potential memory requirement. Each 40 * frame can be up to about 2 kB long. */ 41 #define TOTAL_MAX_TX_BUFFER 512 42 43 /* Required encryption head and tailroom */ 44 #define IEEE80211_ENCRYPT_HEADROOM 8 45 #define IEEE80211_ENCRYPT_TAILROOM 18 46 47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 48 * reception of at least three fragmented frames. This limit can be increased 49 * by changing this define, at the cost of slower frame reassembly and 50 * increased memory use (about 2 kB of RAM per entry). */ 51 #define IEEE80211_FRAGMENT_MAX 4 52 53 /* 54 * Time after which we ignore scan results and no longer report/use 55 * them in any way. 56 */ 57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) 58 59 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 60 61 struct ieee80211_fragment_entry { 62 unsigned long first_frag_time; 63 unsigned int seq; 64 unsigned int rx_queue; 65 unsigned int last_frag; 66 unsigned int extra_len; 67 struct sk_buff_head skb_list; 68 int ccmp; /* Whether fragments were encrypted with CCMP */ 69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 70 }; 71 72 73 struct ieee80211_bss { 74 /* Yes, this is a hack */ 75 struct cfg80211_bss cbss; 76 77 /* don't want to look up all the time */ 78 size_t ssid_len; 79 u8 ssid[IEEE80211_MAX_SSID_LEN]; 80 81 u8 dtim_period; 82 83 bool wmm_used; 84 85 unsigned long last_probe_resp; 86 87 #ifdef CONFIG_MAC80211_MESH 88 u8 *mesh_id; 89 size_t mesh_id_len; 90 u8 *mesh_cfg; 91 #endif 92 93 #define IEEE80211_MAX_SUPP_RATES 32 94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 95 size_t supp_rates_len; 96 97 /* 98 * During assocation, we save an ERP value from a probe response so 99 * that we can feed ERP info to the driver when handling the 100 * association completes. these fields probably won't be up-to-date 101 * otherwise, you probably don't want to use them. 102 */ 103 bool has_erp_value; 104 u8 erp_value; 105 }; 106 107 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 108 { 109 #ifdef CONFIG_MAC80211_MESH 110 return bss->mesh_cfg; 111 #endif 112 return NULL; 113 } 114 115 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 116 { 117 #ifdef CONFIG_MAC80211_MESH 118 return bss->mesh_id; 119 #endif 120 return NULL; 121 } 122 123 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 124 { 125 #ifdef CONFIG_MAC80211_MESH 126 return bss->mesh_id_len; 127 #endif 128 return 0; 129 } 130 131 132 typedef unsigned __bitwise__ ieee80211_tx_result; 133 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 134 #define TX_DROP ((__force ieee80211_tx_result) 1u) 135 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 136 137 #define IEEE80211_TX_FRAGMENTED BIT(0) 138 #define IEEE80211_TX_UNICAST BIT(1) 139 #define IEEE80211_TX_PS_BUFFERED BIT(2) 140 141 struct ieee80211_tx_data { 142 struct sk_buff *skb; 143 struct net_device *dev; 144 struct ieee80211_local *local; 145 struct ieee80211_sub_if_data *sdata; 146 struct sta_info *sta; 147 struct ieee80211_key *key; 148 149 struct ieee80211_channel *channel; 150 151 u16 ethertype; 152 unsigned int flags; 153 }; 154 155 156 typedef unsigned __bitwise__ ieee80211_rx_result; 157 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 158 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 159 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 160 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 161 162 #define IEEE80211_RX_IN_SCAN BIT(0) 163 /* frame is destined to interface currently processed (incl. multicast frames) */ 164 #define IEEE80211_RX_RA_MATCH BIT(1) 165 #define IEEE80211_RX_AMSDU BIT(2) 166 #define IEEE80211_RX_CMNTR_REPORTED BIT(3) 167 #define IEEE80211_RX_FRAGMENTED BIT(4) 168 169 struct ieee80211_rx_data { 170 struct sk_buff *skb; 171 struct net_device *dev; 172 struct ieee80211_local *local; 173 struct ieee80211_sub_if_data *sdata; 174 struct sta_info *sta; 175 struct ieee80211_key *key; 176 struct ieee80211_rx_status *status; 177 struct ieee80211_rate *rate; 178 179 unsigned int flags; 180 int sent_ps_buffered; 181 int queue; 182 u32 tkip_iv32; 183 u16 tkip_iv16; 184 }; 185 186 struct beacon_data { 187 u8 *head, *tail; 188 int head_len, tail_len; 189 int dtim_period; 190 }; 191 192 struct ieee80211_if_ap { 193 struct beacon_data *beacon; 194 195 struct list_head vlans; 196 197 /* yes, this looks ugly, but guarantees that we can later use 198 * bitmap_empty :) 199 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 200 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 201 struct sk_buff_head ps_bc_buf; 202 atomic_t num_sta_ps; /* number of stations in PS mode */ 203 int dtim_count; 204 }; 205 206 struct ieee80211_if_wds { 207 struct sta_info *sta; 208 u8 remote_addr[ETH_ALEN]; 209 }; 210 211 struct ieee80211_if_vlan { 212 struct list_head list; 213 }; 214 215 struct mesh_stats { 216 __u32 fwded_frames; /* Mesh forwarded frames */ 217 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 218 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 219 atomic_t estab_plinks; 220 }; 221 222 #define PREQ_Q_F_START 0x1 223 #define PREQ_Q_F_REFRESH 0x2 224 struct mesh_preq_queue { 225 struct list_head list; 226 u8 dst[ETH_ALEN]; 227 u8 flags; 228 }; 229 230 /* flags used in struct ieee80211_if_managed.flags */ 231 #define IEEE80211_STA_SSID_SET BIT(0) 232 #define IEEE80211_STA_BSSID_SET BIT(1) 233 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 234 #define IEEE80211_STA_AUTHENTICATED BIT(3) 235 #define IEEE80211_STA_ASSOCIATED BIT(4) 236 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 237 #define IEEE80211_STA_CREATE_IBSS BIT(6) 238 #define IEEE80211_STA_CONTROL_PORT BIT(7) 239 #define IEEE80211_STA_WMM_ENABLED BIT(8) 240 /* hole at 9, please re-use */ 241 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 242 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 243 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 244 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13) 245 #define IEEE80211_STA_TKIP_WEP_USED BIT(14) 246 #define IEEE80211_STA_CSA_RECEIVED BIT(15) 247 #define IEEE80211_STA_MFP_ENABLED BIT(16) 248 #define IEEE80211_STA_EXT_SME BIT(17) 249 /* flags for MLME request */ 250 #define IEEE80211_STA_REQ_SCAN 0 251 #define IEEE80211_STA_REQ_AUTH 1 252 #define IEEE80211_STA_REQ_RUN 2 253 254 /* bitfield of allowed auth algs */ 255 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 256 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 257 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 258 #define IEEE80211_AUTH_ALG_FT BIT(3) 259 260 struct ieee80211_if_managed { 261 struct timer_list timer; 262 struct timer_list chswitch_timer; 263 struct work_struct work; 264 struct work_struct chswitch_work; 265 struct work_struct beacon_loss_work; 266 267 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 268 269 u8 ssid[IEEE80211_MAX_SSID_LEN]; 270 size_t ssid_len; 271 272 enum { 273 IEEE80211_STA_MLME_DISABLED, 274 IEEE80211_STA_MLME_DIRECT_PROBE, 275 IEEE80211_STA_MLME_AUTHENTICATE, 276 IEEE80211_STA_MLME_ASSOCIATE, 277 IEEE80211_STA_MLME_ASSOCIATED, 278 } state; 279 280 u16 aid; 281 u16 ap_capab, capab; 282 u8 *extra_ie; /* to be added to the end of AssocReq */ 283 size_t extra_ie_len; 284 285 /* The last AssocReq/Resp IEs */ 286 u8 *assocreq_ies, *assocresp_ies; 287 size_t assocreq_ies_len, assocresp_ies_len; 288 289 struct sk_buff_head skb_queue; 290 291 int assoc_scan_tries; /* number of scans done pre-association */ 292 int direct_probe_tries; /* retries for direct probes */ 293 int auth_tries; /* retries for auth req */ 294 int assoc_tries; /* retries for assoc req */ 295 296 bool powersave; /* powersave requested for this iface */ 297 298 unsigned long request; 299 300 unsigned long last_probe; 301 unsigned long last_beacon; 302 303 unsigned int flags; 304 305 unsigned int auth_algs; /* bitfield of allowed auth algs */ 306 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 307 int auth_transaction; 308 309 u32 beacon_crc; 310 311 enum { 312 IEEE80211_MFP_DISABLED, 313 IEEE80211_MFP_OPTIONAL, 314 IEEE80211_MFP_REQUIRED 315 } mfp; /* management frame protection */ 316 317 int wmm_last_param_set; 318 319 /* Extra IE data for management frames */ 320 u8 *sme_auth_ie; 321 size_t sme_auth_ie_len; 322 }; 323 324 enum ieee80211_ibss_request { 325 IEEE80211_IBSS_REQ_RUN = 0, 326 }; 327 328 struct ieee80211_if_ibss { 329 struct timer_list timer; 330 struct work_struct work; 331 332 struct sk_buff_head skb_queue; 333 334 unsigned long request; 335 unsigned long last_scan_completed; 336 bool fixed_bssid; 337 bool fixed_channel; 338 339 u8 bssid[ETH_ALEN]; 340 u8 ssid[IEEE80211_MAX_SSID_LEN]; 341 u8 ssid_len, ie_len; 342 u8 *ie; 343 struct ieee80211_channel *channel; 344 345 unsigned long ibss_join_req; 346 /* probe response/beacon for IBSS */ 347 struct sk_buff *presp, *skb; 348 349 enum { 350 IEEE80211_IBSS_MLME_SEARCH, 351 IEEE80211_IBSS_MLME_JOINED, 352 } state; 353 }; 354 355 struct ieee80211_if_mesh { 356 struct work_struct work; 357 struct timer_list housekeeping_timer; 358 struct timer_list mesh_path_timer; 359 struct sk_buff_head skb_queue; 360 361 bool housekeeping; 362 363 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 364 size_t mesh_id_len; 365 /* Active Path Selection Protocol Identifier */ 366 u8 mesh_pp_id[4]; 367 /* Active Path Selection Metric Identifier */ 368 u8 mesh_pm_id[4]; 369 /* Congestion Control Mode Identifier */ 370 u8 mesh_cc_id[4]; 371 /* Local mesh Destination Sequence Number */ 372 u32 dsn; 373 /* Last used PREQ ID */ 374 u32 preq_id; 375 atomic_t mpaths; 376 /* Timestamp of last DSN update */ 377 unsigned long last_dsn_update; 378 /* Timestamp of last DSN sent */ 379 unsigned long last_preq; 380 struct mesh_rmc *rmc; 381 spinlock_t mesh_preq_queue_lock; 382 struct mesh_preq_queue preq_queue; 383 int preq_queue_len; 384 struct mesh_stats mshstats; 385 struct mesh_config mshcfg; 386 u32 mesh_seqnum; 387 bool accepting_plinks; 388 }; 389 390 #ifdef CONFIG_MAC80211_MESH 391 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 392 do { (msh)->mshstats.name++; } while (0) 393 #else 394 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 395 do { } while (0) 396 #endif 397 398 /** 399 * enum ieee80211_sub_if_data_flags - virtual interface flags 400 * 401 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 402 * @IEEE80211_SDATA_PROMISC: interface is promisc 403 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 404 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 405 * associated stations and deliver multicast frames both 406 * back to wireless media and to the local net stack. 407 */ 408 enum ieee80211_sub_if_data_flags { 409 IEEE80211_SDATA_ALLMULTI = BIT(0), 410 IEEE80211_SDATA_PROMISC = BIT(1), 411 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 412 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 413 }; 414 415 struct ieee80211_sub_if_data { 416 struct list_head list; 417 418 struct wireless_dev wdev; 419 420 /* keys */ 421 struct list_head key_list; 422 423 struct net_device *dev; 424 struct ieee80211_local *local; 425 426 unsigned int flags; 427 428 int drop_unencrypted; 429 430 /* 431 * keep track of whether the HT opmode (stored in 432 * vif.bss_info.ht_operation_mode) is valid. 433 */ 434 bool ht_opmode_valid; 435 436 /* Fragment table for host-based reassembly */ 437 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 438 unsigned int fragment_next; 439 440 #define NUM_DEFAULT_KEYS 4 441 #define NUM_DEFAULT_MGMT_KEYS 2 442 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 443 struct ieee80211_key *default_key; 444 struct ieee80211_key *default_mgmt_key; 445 446 u16 sequence_number; 447 448 /* 449 * AP this belongs to: self in AP mode and 450 * corresponding AP in VLAN mode, NULL for 451 * all others (might be needed later in IBSS) 452 */ 453 struct ieee80211_if_ap *bss; 454 455 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 456 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 457 458 union { 459 struct ieee80211_if_ap ap; 460 struct ieee80211_if_wds wds; 461 struct ieee80211_if_vlan vlan; 462 struct ieee80211_if_managed mgd; 463 struct ieee80211_if_ibss ibss; 464 #ifdef CONFIG_MAC80211_MESH 465 struct ieee80211_if_mesh mesh; 466 #endif 467 u32 mntr_flags; 468 } u; 469 470 #ifdef CONFIG_MAC80211_DEBUGFS 471 struct dentry *debugfsdir; 472 union { 473 struct { 474 struct dentry *drop_unencrypted; 475 struct dentry *state; 476 struct dentry *bssid; 477 struct dentry *prev_bssid; 478 struct dentry *ssid_len; 479 struct dentry *aid; 480 struct dentry *ap_capab; 481 struct dentry *capab; 482 struct dentry *extra_ie_len; 483 struct dentry *auth_tries; 484 struct dentry *assoc_tries; 485 struct dentry *auth_algs; 486 struct dentry *auth_alg; 487 struct dentry *auth_transaction; 488 struct dentry *flags; 489 struct dentry *force_unicast_rateidx; 490 struct dentry *max_ratectrl_rateidx; 491 } sta; 492 struct { 493 struct dentry *drop_unencrypted; 494 struct dentry *num_sta_ps; 495 struct dentry *dtim_count; 496 struct dentry *force_unicast_rateidx; 497 struct dentry *max_ratectrl_rateidx; 498 struct dentry *num_buffered_multicast; 499 } ap; 500 struct { 501 struct dentry *drop_unencrypted; 502 struct dentry *peer; 503 struct dentry *force_unicast_rateidx; 504 struct dentry *max_ratectrl_rateidx; 505 } wds; 506 struct { 507 struct dentry *drop_unencrypted; 508 struct dentry *force_unicast_rateidx; 509 struct dentry *max_ratectrl_rateidx; 510 } vlan; 511 struct { 512 struct dentry *mode; 513 } monitor; 514 } debugfs; 515 struct { 516 struct dentry *default_key; 517 struct dentry *default_mgmt_key; 518 } common_debugfs; 519 520 #ifdef CONFIG_MAC80211_MESH 521 struct dentry *mesh_stats_dir; 522 struct { 523 struct dentry *fwded_frames; 524 struct dentry *dropped_frames_ttl; 525 struct dentry *dropped_frames_no_route; 526 struct dentry *estab_plinks; 527 struct timer_list mesh_path_timer; 528 } mesh_stats; 529 530 struct dentry *mesh_config_dir; 531 struct { 532 struct dentry *dot11MeshRetryTimeout; 533 struct dentry *dot11MeshConfirmTimeout; 534 struct dentry *dot11MeshHoldingTimeout; 535 struct dentry *dot11MeshMaxRetries; 536 struct dentry *dot11MeshTTL; 537 struct dentry *auto_open_plinks; 538 struct dentry *dot11MeshMaxPeerLinks; 539 struct dentry *dot11MeshHWMPactivePathTimeout; 540 struct dentry *dot11MeshHWMPpreqMinInterval; 541 struct dentry *dot11MeshHWMPnetDiameterTraversalTime; 542 struct dentry *dot11MeshHWMPmaxPREQretries; 543 struct dentry *path_refresh_time; 544 struct dentry *min_discovery_timeout; 545 } mesh_config; 546 #endif 547 548 #endif 549 /* must be last, dynamically sized area in this! */ 550 struct ieee80211_vif vif; 551 }; 552 553 static inline 554 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 555 { 556 return container_of(p, struct ieee80211_sub_if_data, vif); 557 } 558 559 static inline void 560 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, 561 u8 mesh_id_len, u8 *mesh_id) 562 { 563 #ifdef CONFIG_MAC80211_MESH 564 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 565 ifmsh->mesh_id_len = mesh_id_len; 566 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); 567 #else 568 WARN_ON(1); 569 #endif 570 } 571 572 enum { 573 IEEE80211_RX_MSG = 1, 574 IEEE80211_TX_STATUS_MSG = 2, 575 IEEE80211_DELBA_MSG = 3, 576 IEEE80211_ADDBA_MSG = 4, 577 }; 578 579 enum queue_stop_reason { 580 IEEE80211_QUEUE_STOP_REASON_DRIVER, 581 IEEE80211_QUEUE_STOP_REASON_PS, 582 IEEE80211_QUEUE_STOP_REASON_CSA, 583 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 584 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 585 IEEE80211_QUEUE_STOP_REASON_PENDING, 586 }; 587 588 struct ieee80211_master_priv { 589 struct ieee80211_local *local; 590 }; 591 592 struct ieee80211_local { 593 /* embed the driver visible part. 594 * don't cast (use the static inlines below), but we keep 595 * it first anyway so they become a no-op */ 596 struct ieee80211_hw hw; 597 598 const struct ieee80211_ops *ops; 599 600 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 601 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 602 spinlock_t queue_stop_reason_lock; 603 604 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 605 int open_count; 606 int monitors, cooked_mntrs; 607 /* number of interfaces with corresponding FIF_ flags */ 608 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss; 609 unsigned int filter_flags; /* FIF_* */ 610 struct iw_statistics wstats; 611 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 612 int tx_headroom; /* required headroom for hardware/radiotap */ 613 614 /* Tasklet and skb queue to process calls from IRQ mode. All frames 615 * added to skb_queue will be processed, but frames in 616 * skb_queue_unreliable may be dropped if the total length of these 617 * queues increases over the limit. */ 618 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 619 struct tasklet_struct tasklet; 620 struct sk_buff_head skb_queue; 621 struct sk_buff_head skb_queue_unreliable; 622 623 /* Station data */ 624 /* 625 * The lock only protects the list, hash, timer and counter 626 * against manipulation, reads are done in RCU. Additionally, 627 * the lock protects each BSS's TIM bitmap. 628 */ 629 spinlock_t sta_lock; 630 unsigned long num_sta; 631 struct list_head sta_list; 632 struct sta_info *sta_hash[STA_HASH_SIZE]; 633 struct timer_list sta_cleanup; 634 635 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 636 struct tasklet_struct tx_pending_tasklet; 637 638 /* 639 * This lock is used to prevent concurrent A-MPDU 640 * session start/stop processing, this thus also 641 * synchronises the ->ampdu_action() callback to 642 * drivers and limits it to one at a time. 643 */ 644 spinlock_t ampdu_lock; 645 646 /* number of interfaces with corresponding IFF_ flags */ 647 atomic_t iff_allmultis, iff_promiscs; 648 649 struct rate_control_ref *rate_ctrl; 650 651 struct crypto_blkcipher *wep_tx_tfm; 652 struct crypto_blkcipher *wep_rx_tfm; 653 u32 wep_iv; 654 655 /* see iface.c */ 656 struct list_head interfaces; 657 struct mutex iflist_mtx; 658 659 /* 660 * Key lock, protects sdata's key_list and sta_info's 661 * key pointers (write access, they're RCU.) 662 */ 663 spinlock_t key_lock; 664 665 666 /* Scanning and BSS list */ 667 struct mutex scan_mtx; 668 bool sw_scanning, hw_scanning; 669 struct cfg80211_ssid scan_ssid; 670 struct cfg80211_scan_request int_scan_req; 671 struct cfg80211_scan_request *scan_req; 672 struct ieee80211_channel *scan_channel; 673 const u8 *orig_ies; 674 int orig_ies_len; 675 int scan_channel_idx; 676 int scan_ies_len; 677 678 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 679 struct delayed_work scan_work; 680 struct ieee80211_sub_if_data *scan_sdata; 681 enum nl80211_channel_type oper_channel_type; 682 struct ieee80211_channel *oper_channel, *csa_channel; 683 684 /* SNMP counters */ 685 /* dot11CountersTable */ 686 u32 dot11TransmittedFragmentCount; 687 u32 dot11MulticastTransmittedFrameCount; 688 u32 dot11FailedCount; 689 u32 dot11RetryCount; 690 u32 dot11MultipleRetryCount; 691 u32 dot11FrameDuplicateCount; 692 u32 dot11ReceivedFragmentCount; 693 u32 dot11MulticastReceivedFrameCount; 694 u32 dot11TransmittedFrameCount; 695 696 #ifdef CONFIG_MAC80211_LEDS 697 int tx_led_counter, rx_led_counter; 698 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 699 char tx_led_name[32], rx_led_name[32], 700 assoc_led_name[32], radio_led_name[32]; 701 #endif 702 703 #ifdef CONFIG_MAC80211_DEBUGFS 704 struct work_struct sta_debugfs_add; 705 #endif 706 707 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 708 /* TX/RX handler statistics */ 709 unsigned int tx_handlers_drop; 710 unsigned int tx_handlers_queued; 711 unsigned int tx_handlers_drop_unencrypted; 712 unsigned int tx_handlers_drop_fragment; 713 unsigned int tx_handlers_drop_wep; 714 unsigned int tx_handlers_drop_not_assoc; 715 unsigned int tx_handlers_drop_unauth_port; 716 unsigned int rx_handlers_drop; 717 unsigned int rx_handlers_queued; 718 unsigned int rx_handlers_drop_nullfunc; 719 unsigned int rx_handlers_drop_defrag; 720 unsigned int rx_handlers_drop_short; 721 unsigned int rx_handlers_drop_passive_scan; 722 unsigned int tx_expand_skb_head; 723 unsigned int tx_expand_skb_head_cloned; 724 unsigned int rx_expand_skb_head; 725 unsigned int rx_expand_skb_head2; 726 unsigned int rx_handlers_fragments; 727 unsigned int tx_status_drop; 728 #define I802_DEBUG_INC(c) (c)++ 729 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 730 #define I802_DEBUG_INC(c) do { } while (0) 731 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 732 733 734 int total_ps_buffered; /* total number of all buffered unicast and 735 * multicast packets for power saving stations 736 */ 737 int wifi_wme_noack_test; 738 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 739 740 bool pspolling; 741 /* 742 * PS can only be enabled when we have exactly one managed 743 * interface (and monitors) in PS, this then points there. 744 */ 745 struct ieee80211_sub_if_data *ps_sdata; 746 struct work_struct dynamic_ps_enable_work; 747 struct work_struct dynamic_ps_disable_work; 748 struct timer_list dynamic_ps_timer; 749 struct notifier_block network_latency_notifier; 750 751 int user_power_level; /* in dBm */ 752 int power_constr_level; /* in dBm */ 753 754 struct work_struct restart_work; 755 756 #ifdef CONFIG_MAC80211_DEBUGFS 757 struct local_debugfsdentries { 758 struct dentry *rcdir; 759 struct dentry *rcname; 760 struct dentry *frequency; 761 struct dentry *total_ps_buffered; 762 struct dentry *wep_iv; 763 struct dentry *tsf; 764 struct dentry *reset; 765 struct dentry *noack; 766 struct dentry *statistics; 767 struct local_debugfsdentries_statsdentries { 768 struct dentry *transmitted_fragment_count; 769 struct dentry *multicast_transmitted_frame_count; 770 struct dentry *failed_count; 771 struct dentry *retry_count; 772 struct dentry *multiple_retry_count; 773 struct dentry *frame_duplicate_count; 774 struct dentry *received_fragment_count; 775 struct dentry *multicast_received_frame_count; 776 struct dentry *transmitted_frame_count; 777 struct dentry *wep_undecryptable_count; 778 struct dentry *num_scans; 779 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 780 struct dentry *tx_handlers_drop; 781 struct dentry *tx_handlers_queued; 782 struct dentry *tx_handlers_drop_unencrypted; 783 struct dentry *tx_handlers_drop_fragment; 784 struct dentry *tx_handlers_drop_wep; 785 struct dentry *tx_handlers_drop_not_assoc; 786 struct dentry *tx_handlers_drop_unauth_port; 787 struct dentry *rx_handlers_drop; 788 struct dentry *rx_handlers_queued; 789 struct dentry *rx_handlers_drop_nullfunc; 790 struct dentry *rx_handlers_drop_defrag; 791 struct dentry *rx_handlers_drop_short; 792 struct dentry *rx_handlers_drop_passive_scan; 793 struct dentry *tx_expand_skb_head; 794 struct dentry *tx_expand_skb_head_cloned; 795 struct dentry *rx_expand_skb_head; 796 struct dentry *rx_expand_skb_head2; 797 struct dentry *rx_handlers_fragments; 798 struct dentry *tx_status_drop; 799 #endif 800 struct dentry *dot11ACKFailureCount; 801 struct dentry *dot11RTSFailureCount; 802 struct dentry *dot11FCSErrorCount; 803 struct dentry *dot11RTSSuccessCount; 804 } stats; 805 struct dentry *stations; 806 struct dentry *keys; 807 } debugfs; 808 #endif 809 }; 810 811 static inline struct ieee80211_sub_if_data * 812 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 813 { 814 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 815 816 BUG_ON(!local || local->mdev == dev); 817 818 return netdev_priv(dev); 819 } 820 821 /* this struct represents 802.11n's RA/TID combination */ 822 struct ieee80211_ra_tid { 823 u8 ra[ETH_ALEN]; 824 u16 tid; 825 }; 826 827 /* Parsed Information Elements */ 828 struct ieee802_11_elems { 829 u8 *ie_start; 830 size_t total_len; 831 832 /* pointers to IEs */ 833 u8 *ssid; 834 u8 *supp_rates; 835 u8 *fh_params; 836 u8 *ds_params; 837 u8 *cf_params; 838 struct ieee80211_tim_ie *tim; 839 u8 *ibss_params; 840 u8 *challenge; 841 u8 *wpa; 842 u8 *rsn; 843 u8 *erp_info; 844 u8 *ext_supp_rates; 845 u8 *wmm_info; 846 u8 *wmm_param; 847 struct ieee80211_ht_cap *ht_cap_elem; 848 struct ieee80211_ht_info *ht_info_elem; 849 u8 *mesh_config; 850 u8 *mesh_id; 851 u8 *peer_link; 852 u8 *preq; 853 u8 *prep; 854 u8 *perr; 855 u8 *ch_switch_elem; 856 u8 *country_elem; 857 u8 *pwr_constr_elem; 858 u8 *quiet_elem; /* first quite element */ 859 u8 *timeout_int; 860 861 /* length of them, respectively */ 862 u8 ssid_len; 863 u8 supp_rates_len; 864 u8 fh_params_len; 865 u8 ds_params_len; 866 u8 cf_params_len; 867 u8 tim_len; 868 u8 ibss_params_len; 869 u8 challenge_len; 870 u8 wpa_len; 871 u8 rsn_len; 872 u8 erp_info_len; 873 u8 ext_supp_rates_len; 874 u8 wmm_info_len; 875 u8 wmm_param_len; 876 u8 mesh_config_len; 877 u8 mesh_id_len; 878 u8 peer_link_len; 879 u8 preq_len; 880 u8 prep_len; 881 u8 perr_len; 882 u8 ch_switch_elem_len; 883 u8 country_elem_len; 884 u8 pwr_constr_elem_len; 885 u8 quiet_elem_len; 886 u8 num_of_quiet_elem; /* can be more the one */ 887 u8 timeout_int_len; 888 }; 889 890 static inline struct ieee80211_local *hw_to_local( 891 struct ieee80211_hw *hw) 892 { 893 return container_of(hw, struct ieee80211_local, hw); 894 } 895 896 static inline struct ieee80211_hw *local_to_hw( 897 struct ieee80211_local *local) 898 { 899 return &local->hw; 900 } 901 902 903 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 904 { 905 return compare_ether_addr(raddr, addr) == 0 || 906 is_broadcast_ether_addr(raddr); 907 } 908 909 910 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 911 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 912 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 913 u32 changed); 914 void ieee80211_configure_filter(struct ieee80211_local *local); 915 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 916 917 /* wireless extensions */ 918 extern const struct iw_handler_def ieee80211_iw_handler_def; 919 920 /* STA code */ 921 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 922 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, 923 struct sk_buff *skb, 924 struct ieee80211_rx_status *rx_status); 925 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata); 926 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len); 927 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len); 928 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid); 929 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata); 930 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason); 931 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason); 932 void ieee80211_send_pspoll(struct ieee80211_local *local, 933 struct ieee80211_sub_if_data *sdata); 934 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); 935 int ieee80211_max_network_latency(struct notifier_block *nb, 936 unsigned long data, void *dummy); 937 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 938 struct ieee80211_channel_sw_ie *sw_elem, 939 struct ieee80211_bss *bss); 940 941 /* IBSS code */ 942 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 943 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 944 ieee80211_rx_result 945 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 946 struct ieee80211_rx_status *rx_status); 947 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 948 u8 *bssid, u8 *addr, u32 supp_rates); 949 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 950 struct cfg80211_ibss_params *params); 951 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 952 953 /* scan/BSS handling */ 954 void ieee80211_scan_work(struct work_struct *work); 955 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, 956 const u8 *ssid, u8 ssid_len); 957 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 958 struct cfg80211_scan_request *req); 959 int ieee80211_scan_results(struct ieee80211_local *local, 960 struct iw_request_info *info, 961 char *buf, size_t len); 962 ieee80211_rx_result 963 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, 964 struct sk_buff *skb, 965 struct ieee80211_rx_status *rx_status); 966 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, 967 const char *ie, size_t len); 968 969 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 970 struct ieee80211_bss * 971 ieee80211_bss_info_update(struct ieee80211_local *local, 972 struct ieee80211_rx_status *rx_status, 973 struct ieee80211_mgmt *mgmt, 974 size_t len, 975 struct ieee802_11_elems *elems, 976 struct ieee80211_channel *channel, 977 bool beacon); 978 struct ieee80211_bss * 979 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 980 u8 *ssid, u8 ssid_len); 981 void ieee80211_rx_bss_put(struct ieee80211_local *local, 982 struct ieee80211_bss *bss); 983 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid, 984 int freq, u8 *ssid, u8 ssid_len); 985 986 /* interface handling */ 987 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 988 struct net_device **new_dev, enum nl80211_iftype type, 989 struct vif_params *params); 990 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 991 enum nl80211_iftype type); 992 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 993 void ieee80211_remove_interfaces(struct ieee80211_local *local); 994 u32 __ieee80211_recalc_idle(struct ieee80211_local *local); 995 void ieee80211_recalc_idle(struct ieee80211_local *local); 996 997 /* tx handling */ 998 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 999 void ieee80211_tx_pending(unsigned long data); 1000 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 1001 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 1002 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 1003 1004 /* HT */ 1005 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 1006 struct ieee80211_ht_cap *ht_cap_ie, 1007 struct ieee80211_sta_ht_cap *ht_cap); 1008 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1009 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1010 const u8 *da, u16 tid, 1011 u16 initiator, u16 reason_code); 1012 1013 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da, 1014 u16 tid, u16 initiator, u16 reason); 1015 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1016 u16 initiator, u16 reason); 1017 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta); 1018 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1019 struct sta_info *sta, 1020 struct ieee80211_mgmt *mgmt, size_t len); 1021 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1022 struct sta_info *sta, 1023 struct ieee80211_mgmt *mgmt, 1024 size_t len); 1025 void ieee80211_process_addba_request(struct ieee80211_local *local, 1026 struct sta_info *sta, 1027 struct ieee80211_mgmt *mgmt, 1028 size_t len); 1029 1030 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1031 enum ieee80211_back_parties initiator); 1032 1033 /* Spectrum management */ 1034 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1035 struct ieee80211_mgmt *mgmt, 1036 size_t len); 1037 1038 /* Suspend/resume and hw reconfiguration */ 1039 int ieee80211_reconfig(struct ieee80211_local *local); 1040 1041 #ifdef CONFIG_PM 1042 int __ieee80211_suspend(struct ieee80211_hw *hw); 1043 1044 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1045 { 1046 return ieee80211_reconfig(hw_to_local(hw)); 1047 } 1048 #else 1049 static inline int __ieee80211_suspend(struct ieee80211_hw *hw) 1050 { 1051 return 0; 1052 } 1053 1054 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1055 { 1056 return 0; 1057 } 1058 #endif 1059 1060 /* utility functions/constants */ 1061 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1062 extern const unsigned char rfc1042_header[6]; 1063 extern const unsigned char bridge_tunnel_header[6]; 1064 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1065 enum nl80211_iftype type); 1066 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1067 int rate, int erp, int short_preamble); 1068 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1069 struct ieee80211_hdr *hdr, const u8 *tsc); 1070 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1071 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1072 int encrypt); 1073 void ieee802_11_parse_elems(u8 *start, size_t len, 1074 struct ieee802_11_elems *elems); 1075 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, 1076 struct ieee802_11_elems *elems, 1077 u64 filter, u32 crc); 1078 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq); 1079 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1080 enum ieee80211_band band); 1081 1082 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1083 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1084 void ieee80211_dynamic_ps_timer(unsigned long data); 1085 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1086 struct ieee80211_sub_if_data *sdata, 1087 int powersave); 1088 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1089 struct ieee80211_hdr *hdr); 1090 void ieee80211_beacon_loss_work(struct work_struct *work); 1091 1092 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1093 enum queue_stop_reason reason); 1094 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1095 enum queue_stop_reason reason); 1096 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1097 enum queue_stop_reason reason); 1098 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1099 enum queue_stop_reason reason); 1100 1101 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1102 u16 transaction, u16 auth_alg, 1103 u8 *extra, size_t extra_len, 1104 const u8 *bssid, int encrypt); 1105 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 1106 const u8 *ie, size_t ie_len); 1107 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1108 const u8 *ssid, size_t ssid_len, 1109 const u8 *ie, size_t ie_len); 1110 1111 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1112 const size_t supp_rates_len, 1113 const u8 *supp_rates); 1114 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1115 struct ieee802_11_elems *elems, 1116 enum ieee80211_band band); 1117 1118 #ifdef CONFIG_MAC80211_NOINLINE 1119 #define debug_noinline noinline 1120 #else 1121 #define debug_noinline 1122 #endif 1123 1124 #endif /* IEEE80211_I_H */ 1125