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/wireless.h> 28 #include <net/iw_handler.h> 29 #include <net/mac80211.h> 30 #include "key.h" 31 #include "sta_info.h" 32 33 struct ieee80211_local; 34 35 /* Maximum number of broadcast/multicast frames to buffer when some of the 36 * associated stations are using power saving. */ 37 #define AP_MAX_BC_BUFFER 128 38 39 /* Maximum number of frames buffered to all STAs, including multicast frames. 40 * Note: increasing this limit increases the potential memory requirement. Each 41 * frame can be up to about 2 kB long. */ 42 #define TOTAL_MAX_TX_BUFFER 512 43 44 /* Required encryption head and tailroom */ 45 #define IEEE80211_ENCRYPT_HEADROOM 8 46 #define IEEE80211_ENCRYPT_TAILROOM 18 47 48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 49 * reception of at least three fragmented frames. This limit can be increased 50 * by changing this define, at the cost of slower frame reassembly and 51 * increased memory use (about 2 kB of RAM per entry). */ 52 #define IEEE80211_FRAGMENT_MAX 4 53 54 /* 55 * Time after which we ignore scan results and no longer report/use 56 * them in any way. 57 */ 58 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) 59 60 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) 61 62 struct ieee80211_fragment_entry { 63 unsigned long first_frag_time; 64 unsigned int seq; 65 unsigned int rx_queue; 66 unsigned int last_frag; 67 unsigned int extra_len; 68 struct sk_buff_head skb_list; 69 int ccmp; /* Whether fragments were encrypted with CCMP */ 70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 71 }; 72 73 74 struct ieee80211_bss { 75 /* Yes, this is a hack */ 76 struct cfg80211_bss cbss; 77 78 /* don't want to look up all the time */ 79 size_t ssid_len; 80 u8 ssid[IEEE80211_MAX_SSID_LEN]; 81 82 u8 dtim_period; 83 84 bool wmm_used; 85 86 unsigned long last_probe_resp; 87 88 #ifdef CONFIG_MAC80211_MESH 89 u8 *mesh_id; 90 size_t mesh_id_len; 91 u8 *mesh_cfg; 92 #endif 93 94 #define IEEE80211_MAX_SUPP_RATES 32 95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 96 size_t supp_rates_len; 97 98 /* 99 * During assocation, we save an ERP value from a probe response so 100 * that we can feed ERP info to the driver when handling the 101 * association completes. these fields probably won't be up-to-date 102 * otherwise, you probably don't want to use them. 103 */ 104 bool has_erp_value; 105 u8 erp_value; 106 }; 107 108 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 109 { 110 #ifdef CONFIG_MAC80211_MESH 111 return bss->mesh_cfg; 112 #endif 113 return NULL; 114 } 115 116 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 117 { 118 #ifdef CONFIG_MAC80211_MESH 119 return bss->mesh_id; 120 #endif 121 return NULL; 122 } 123 124 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 125 { 126 #ifdef CONFIG_MAC80211_MESH 127 return bss->mesh_id_len; 128 #endif 129 return 0; 130 } 131 132 133 typedef unsigned __bitwise__ ieee80211_tx_result; 134 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 135 #define TX_DROP ((__force ieee80211_tx_result) 1u) 136 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 137 138 #define IEEE80211_TX_FRAGMENTED BIT(0) 139 #define IEEE80211_TX_UNICAST BIT(1) 140 #define IEEE80211_TX_PS_BUFFERED BIT(2) 141 142 struct ieee80211_tx_data { 143 struct sk_buff *skb; 144 struct net_device *dev; 145 struct ieee80211_local *local; 146 struct ieee80211_sub_if_data *sdata; 147 struct sta_info *sta; 148 struct ieee80211_key *key; 149 150 struct ieee80211_channel *channel; 151 152 u16 ethertype; 153 unsigned int flags; 154 }; 155 156 157 typedef unsigned __bitwise__ ieee80211_rx_result; 158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 162 163 #define IEEE80211_RX_IN_SCAN BIT(0) 164 /* frame is destined to interface currently processed (incl. multicast frames) */ 165 #define IEEE80211_RX_RA_MATCH BIT(1) 166 #define IEEE80211_RX_AMSDU BIT(2) 167 #define IEEE80211_RX_CMNTR_REPORTED BIT(3) 168 #define IEEE80211_RX_FRAGMENTED BIT(4) 169 170 struct ieee80211_rx_data { 171 struct sk_buff *skb; 172 struct net_device *dev; 173 struct ieee80211_local *local; 174 struct ieee80211_sub_if_data *sdata; 175 struct sta_info *sta; 176 struct ieee80211_key *key; 177 struct ieee80211_rx_status *status; 178 struct ieee80211_rate *rate; 179 180 unsigned int flags; 181 int sent_ps_buffered; 182 int queue; 183 u32 tkip_iv32; 184 u16 tkip_iv16; 185 }; 186 187 struct beacon_data { 188 u8 *head, *tail; 189 int head_len, tail_len; 190 int dtim_period; 191 }; 192 193 struct ieee80211_if_ap { 194 struct beacon_data *beacon; 195 196 struct list_head vlans; 197 198 /* yes, this looks ugly, but guarantees that we can later use 199 * bitmap_empty :) 200 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 201 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 202 struct sk_buff_head ps_bc_buf; 203 atomic_t num_sta_ps; /* number of stations in PS mode */ 204 int dtim_count; 205 }; 206 207 struct ieee80211_if_wds { 208 struct sta_info *sta; 209 u8 remote_addr[ETH_ALEN]; 210 }; 211 212 struct ieee80211_if_vlan { 213 struct list_head list; 214 }; 215 216 struct mesh_stats { 217 __u32 fwded_frames; /* Mesh forwarded frames */ 218 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 219 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 220 atomic_t estab_plinks; 221 }; 222 223 #define PREQ_Q_F_START 0x1 224 #define PREQ_Q_F_REFRESH 0x2 225 struct mesh_preq_queue { 226 struct list_head list; 227 u8 dst[ETH_ALEN]; 228 u8 flags; 229 }; 230 231 /* flags used in struct ieee80211_if_managed.flags */ 232 #define IEEE80211_STA_SSID_SET BIT(0) 233 #define IEEE80211_STA_BSSID_SET BIT(1) 234 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 235 #define IEEE80211_STA_AUTHENTICATED BIT(3) 236 #define IEEE80211_STA_ASSOCIATED BIT(4) 237 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 238 #define IEEE80211_STA_CREATE_IBSS BIT(6) 239 /* hole at 7, please re-use */ 240 #define IEEE80211_STA_WMM_ENABLED BIT(8) 241 /* hole at 9, please re-use */ 242 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 243 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 244 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 245 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13) 246 #define IEEE80211_STA_TKIP_WEP_USED BIT(14) 247 #define IEEE80211_STA_CSA_RECEIVED BIT(15) 248 #define IEEE80211_STA_MFP_ENABLED BIT(16) 249 #define IEEE80211_STA_EXT_SME BIT(17) 250 /* flags for MLME request */ 251 #define IEEE80211_STA_REQ_SCAN 0 252 #define IEEE80211_STA_REQ_DIRECT_PROBE 1 253 #define IEEE80211_STA_REQ_AUTH 2 254 #define IEEE80211_STA_REQ_RUN 3 255 256 /* bitfield of allowed auth algs */ 257 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 258 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 259 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 260 #define IEEE80211_AUTH_ALG_FT BIT(3) 261 262 struct ieee80211_if_managed { 263 struct timer_list timer; 264 struct timer_list chswitch_timer; 265 struct work_struct work; 266 struct work_struct chswitch_work; 267 struct work_struct beacon_loss_work; 268 269 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 270 271 u8 ssid[IEEE80211_MAX_SSID_LEN]; 272 size_t ssid_len; 273 274 enum { 275 IEEE80211_STA_MLME_DISABLED, 276 IEEE80211_STA_MLME_DIRECT_PROBE, 277 IEEE80211_STA_MLME_AUTHENTICATE, 278 IEEE80211_STA_MLME_ASSOCIATE, 279 IEEE80211_STA_MLME_ASSOCIATED, 280 } state; 281 282 u16 aid; 283 u16 ap_capab, capab; 284 u8 *extra_ie; /* to be added to the end of AssocReq */ 285 size_t extra_ie_len; 286 287 /* The last AssocReq/Resp IEs */ 288 u8 *assocreq_ies, *assocresp_ies; 289 size_t assocreq_ies_len, assocresp_ies_len; 290 291 struct sk_buff_head skb_queue; 292 293 int assoc_scan_tries; /* number of scans done pre-association */ 294 int direct_probe_tries; /* retries for direct probes */ 295 int auth_tries; /* retries for auth req */ 296 int assoc_tries; /* retries for assoc req */ 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 enum { 310 IEEE80211_MFP_DISABLED, 311 IEEE80211_MFP_OPTIONAL, 312 IEEE80211_MFP_REQUIRED 313 } mfp; /* management frame protection */ 314 315 int wmm_last_param_set; 316 317 /* Extra IE data for management frames */ 318 u8 *sme_auth_ie; 319 size_t sme_auth_ie_len; 320 }; 321 322 enum ieee80211_ibss_flags { 323 IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0), 324 IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1), 325 IEEE80211_IBSS_BSSID_SET = BIT(2), 326 IEEE80211_IBSS_PREV_BSSID_SET = BIT(3), 327 IEEE80211_IBSS_SSID_SET = BIT(4), 328 }; 329 330 enum ieee80211_ibss_request { 331 IEEE80211_IBSS_REQ_RUN = 0, 332 }; 333 334 struct ieee80211_if_ibss { 335 struct timer_list timer; 336 struct work_struct work; 337 338 struct sk_buff_head skb_queue; 339 340 u8 ssid[IEEE80211_MAX_SSID_LEN]; 341 u8 ssid_len; 342 343 u32 flags; 344 345 u8 bssid[ETH_ALEN]; 346 347 unsigned long request; 348 349 unsigned long ibss_join_req; 350 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 351 352 enum { 353 IEEE80211_IBSS_MLME_SEARCH, 354 IEEE80211_IBSS_MLME_JOINED, 355 } state; 356 }; 357 358 struct ieee80211_if_mesh { 359 struct work_struct work; 360 struct timer_list housekeeping_timer; 361 struct timer_list mesh_path_timer; 362 struct sk_buff_head skb_queue; 363 364 bool housekeeping; 365 366 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 367 size_t mesh_id_len; 368 /* Active Path Selection Protocol Identifier */ 369 u8 mesh_pp_id[4]; 370 /* Active Path Selection Metric Identifier */ 371 u8 mesh_pm_id[4]; 372 /* Congestion Control Mode Identifier */ 373 u8 mesh_cc_id[4]; 374 /* Local mesh Destination Sequence Number */ 375 u32 dsn; 376 /* Last used PREQ ID */ 377 u32 preq_id; 378 atomic_t mpaths; 379 /* Timestamp of last DSN update */ 380 unsigned long last_dsn_update; 381 /* Timestamp of last DSN sent */ 382 unsigned long last_preq; 383 struct mesh_rmc *rmc; 384 spinlock_t mesh_preq_queue_lock; 385 struct mesh_preq_queue preq_queue; 386 int preq_queue_len; 387 struct mesh_stats mshstats; 388 struct mesh_config mshcfg; 389 u32 mesh_seqnum; 390 bool accepting_plinks; 391 }; 392 393 #ifdef CONFIG_MAC80211_MESH 394 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 395 do { (msh)->mshstats.name++; } while (0) 396 #else 397 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 398 do { } while (0) 399 #endif 400 401 /** 402 * enum ieee80211_sub_if_data_flags - virtual interface flags 403 * 404 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 405 * @IEEE80211_SDATA_PROMISC: interface is promisc 406 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 407 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 408 * associated stations and deliver multicast frames both 409 * back to wireless media and to the local net stack. 410 */ 411 enum ieee80211_sub_if_data_flags { 412 IEEE80211_SDATA_ALLMULTI = BIT(0), 413 IEEE80211_SDATA_PROMISC = BIT(1), 414 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 415 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 416 }; 417 418 struct ieee80211_sub_if_data { 419 struct list_head list; 420 421 struct wireless_dev wdev; 422 423 /* keys */ 424 struct list_head key_list; 425 426 struct net_device *dev; 427 struct ieee80211_local *local; 428 429 unsigned int flags; 430 431 int drop_unencrypted; 432 433 /* Fragment table for host-based reassembly */ 434 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 435 unsigned int fragment_next; 436 437 #define NUM_DEFAULT_KEYS 4 438 #define NUM_DEFAULT_MGMT_KEYS 2 439 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 440 struct ieee80211_key *default_key; 441 struct ieee80211_key *default_mgmt_key; 442 443 u16 sequence_number; 444 445 /* 446 * AP this belongs to: self in AP mode and 447 * corresponding AP in VLAN mode, NULL for 448 * all others (might be needed later in IBSS) 449 */ 450 struct ieee80211_if_ap *bss; 451 452 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 453 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 454 455 union { 456 struct ieee80211_if_ap ap; 457 struct ieee80211_if_wds wds; 458 struct ieee80211_if_vlan vlan; 459 struct ieee80211_if_managed mgd; 460 struct ieee80211_if_ibss ibss; 461 #ifdef CONFIG_MAC80211_MESH 462 struct ieee80211_if_mesh mesh; 463 #endif 464 u32 mntr_flags; 465 } u; 466 467 #ifdef CONFIG_MAC80211_DEBUGFS 468 struct dentry *debugfsdir; 469 union { 470 struct { 471 struct dentry *drop_unencrypted; 472 struct dentry *state; 473 struct dentry *bssid; 474 struct dentry *prev_bssid; 475 struct dentry *ssid_len; 476 struct dentry *aid; 477 struct dentry *ap_capab; 478 struct dentry *capab; 479 struct dentry *extra_ie_len; 480 struct dentry *auth_tries; 481 struct dentry *assoc_tries; 482 struct dentry *auth_algs; 483 struct dentry *auth_alg; 484 struct dentry *auth_transaction; 485 struct dentry *flags; 486 struct dentry *force_unicast_rateidx; 487 struct dentry *max_ratectrl_rateidx; 488 } sta; 489 struct { 490 struct dentry *drop_unencrypted; 491 struct dentry *num_sta_ps; 492 struct dentry *dtim_count; 493 struct dentry *force_unicast_rateidx; 494 struct dentry *max_ratectrl_rateidx; 495 struct dentry *num_buffered_multicast; 496 } ap; 497 struct { 498 struct dentry *drop_unencrypted; 499 struct dentry *peer; 500 struct dentry *force_unicast_rateidx; 501 struct dentry *max_ratectrl_rateidx; 502 } wds; 503 struct { 504 struct dentry *drop_unencrypted; 505 struct dentry *force_unicast_rateidx; 506 struct dentry *max_ratectrl_rateidx; 507 } vlan; 508 struct { 509 struct dentry *mode; 510 } monitor; 511 } debugfs; 512 struct { 513 struct dentry *default_key; 514 struct dentry *default_mgmt_key; 515 } common_debugfs; 516 517 #ifdef CONFIG_MAC80211_MESH 518 struct dentry *mesh_stats_dir; 519 struct { 520 struct dentry *fwded_frames; 521 struct dentry *dropped_frames_ttl; 522 struct dentry *dropped_frames_no_route; 523 struct dentry *estab_plinks; 524 struct timer_list mesh_path_timer; 525 } mesh_stats; 526 527 struct dentry *mesh_config_dir; 528 struct { 529 struct dentry *dot11MeshRetryTimeout; 530 struct dentry *dot11MeshConfirmTimeout; 531 struct dentry *dot11MeshHoldingTimeout; 532 struct dentry *dot11MeshMaxRetries; 533 struct dentry *dot11MeshTTL; 534 struct dentry *auto_open_plinks; 535 struct dentry *dot11MeshMaxPeerLinks; 536 struct dentry *dot11MeshHWMPactivePathTimeout; 537 struct dentry *dot11MeshHWMPpreqMinInterval; 538 struct dentry *dot11MeshHWMPnetDiameterTraversalTime; 539 struct dentry *dot11MeshHWMPmaxPREQretries; 540 struct dentry *path_refresh_time; 541 struct dentry *min_discovery_timeout; 542 } mesh_config; 543 #endif 544 545 #endif 546 /* must be last, dynamically sized area in this! */ 547 struct ieee80211_vif vif; 548 }; 549 550 static inline 551 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 552 { 553 return container_of(p, struct ieee80211_sub_if_data, vif); 554 } 555 556 static inline void 557 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, 558 u8 mesh_id_len, u8 *mesh_id) 559 { 560 #ifdef CONFIG_MAC80211_MESH 561 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 562 ifmsh->mesh_id_len = mesh_id_len; 563 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); 564 #else 565 WARN_ON(1); 566 #endif 567 } 568 569 enum { 570 IEEE80211_RX_MSG = 1, 571 IEEE80211_TX_STATUS_MSG = 2, 572 IEEE80211_DELBA_MSG = 3, 573 IEEE80211_ADDBA_MSG = 4, 574 }; 575 576 enum queue_stop_reason { 577 IEEE80211_QUEUE_STOP_REASON_DRIVER, 578 IEEE80211_QUEUE_STOP_REASON_PS, 579 IEEE80211_QUEUE_STOP_REASON_CSA, 580 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 581 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 582 IEEE80211_QUEUE_STOP_REASON_PENDING, 583 }; 584 585 struct ieee80211_master_priv { 586 struct ieee80211_local *local; 587 }; 588 589 struct ieee80211_local { 590 /* embed the driver visible part. 591 * don't cast (use the static inlines below), but we keep 592 * it first anyway so they become a no-op */ 593 struct ieee80211_hw hw; 594 595 const struct ieee80211_ops *ops; 596 597 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 598 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 599 spinlock_t queue_stop_reason_lock; 600 601 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 602 int open_count; 603 int monitors, cooked_mntrs; 604 /* number of interfaces with corresponding FIF_ flags */ 605 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss; 606 unsigned int filter_flags; /* FIF_* */ 607 struct iw_statistics wstats; 608 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 609 int tx_headroom; /* required headroom for hardware/radiotap */ 610 611 /* Tasklet and skb queue to process calls from IRQ mode. All frames 612 * added to skb_queue will be processed, but frames in 613 * skb_queue_unreliable may be dropped if the total length of these 614 * queues increases over the limit. */ 615 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 616 struct tasklet_struct tasklet; 617 struct sk_buff_head skb_queue; 618 struct sk_buff_head skb_queue_unreliable; 619 620 /* Station data */ 621 /* 622 * The lock only protects the list, hash, timer and counter 623 * against manipulation, reads are done in RCU. Additionally, 624 * the lock protects each BSS's TIM bitmap. 625 */ 626 spinlock_t sta_lock; 627 unsigned long num_sta; 628 struct list_head sta_list; 629 struct list_head sta_flush_list; 630 struct work_struct sta_flush_work; 631 struct sta_info *sta_hash[STA_HASH_SIZE]; 632 struct timer_list sta_cleanup; 633 634 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 635 struct tasklet_struct tx_pending_tasklet; 636 637 /* 638 * This lock is used to prevent concurrent A-MPDU 639 * session start/stop processing, this thus also 640 * synchronises the ->ampdu_action() callback to 641 * drivers and limits it to one at a time. 642 */ 643 spinlock_t ampdu_lock; 644 645 /* number of interfaces with corresponding IFF_ flags */ 646 atomic_t iff_allmultis, iff_promiscs; 647 648 struct rate_control_ref *rate_ctrl; 649 650 int rts_threshold; 651 int fragmentation_threshold; 652 653 struct crypto_blkcipher *wep_tx_tfm; 654 struct crypto_blkcipher *wep_rx_tfm; 655 u32 wep_iv; 656 657 /* see iface.c */ 658 struct list_head interfaces; 659 struct mutex iflist_mtx; 660 661 /* 662 * Key lock, protects sdata's key_list and sta_info's 663 * key pointers (write access, they're RCU.) 664 */ 665 spinlock_t key_lock; 666 667 668 /* Scanning and BSS list */ 669 bool sw_scanning, hw_scanning; 670 struct cfg80211_ssid scan_ssid; 671 struct cfg80211_scan_request int_scan_req; 672 struct cfg80211_scan_request *scan_req; 673 struct ieee80211_channel *scan_channel; 674 int scan_channel_idx; 675 676 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 677 unsigned long last_scan_completed; 678 struct delayed_work scan_work; 679 struct ieee80211_sub_if_data *scan_sdata; 680 enum nl80211_channel_type oper_channel_type; 681 struct ieee80211_channel *oper_channel, *csa_channel; 682 683 /* SNMP counters */ 684 /* dot11CountersTable */ 685 u32 dot11TransmittedFragmentCount; 686 u32 dot11MulticastTransmittedFrameCount; 687 u32 dot11FailedCount; 688 u32 dot11RetryCount; 689 u32 dot11MultipleRetryCount; 690 u32 dot11FrameDuplicateCount; 691 u32 dot11ReceivedFragmentCount; 692 u32 dot11MulticastReceivedFrameCount; 693 u32 dot11TransmittedFrameCount; 694 695 #ifdef CONFIG_MAC80211_LEDS 696 int tx_led_counter, rx_led_counter; 697 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 698 char tx_led_name[32], rx_led_name[32], 699 assoc_led_name[32], radio_led_name[32]; 700 #endif 701 702 #ifdef CONFIG_MAC80211_DEBUGFS 703 struct work_struct sta_debugfs_add; 704 #endif 705 706 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 707 /* TX/RX handler statistics */ 708 unsigned int tx_handlers_drop; 709 unsigned int tx_handlers_queued; 710 unsigned int tx_handlers_drop_unencrypted; 711 unsigned int tx_handlers_drop_fragment; 712 unsigned int tx_handlers_drop_wep; 713 unsigned int tx_handlers_drop_not_assoc; 714 unsigned int tx_handlers_drop_unauth_port; 715 unsigned int rx_handlers_drop; 716 unsigned int rx_handlers_queued; 717 unsigned int rx_handlers_drop_nullfunc; 718 unsigned int rx_handlers_drop_defrag; 719 unsigned int rx_handlers_drop_short; 720 unsigned int rx_handlers_drop_passive_scan; 721 unsigned int tx_expand_skb_head; 722 unsigned int tx_expand_skb_head_cloned; 723 unsigned int rx_expand_skb_head; 724 unsigned int rx_expand_skb_head2; 725 unsigned int rx_handlers_fragments; 726 unsigned int tx_status_drop; 727 #define I802_DEBUG_INC(c) (c)++ 728 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 729 #define I802_DEBUG_INC(c) do { } while (0) 730 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 731 732 733 int total_ps_buffered; /* total number of all buffered unicast and 734 * multicast packets for power saving stations 735 */ 736 int wifi_wme_noack_test; 737 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 738 739 bool powersave; 740 bool pspolling; 741 struct work_struct dynamic_ps_enable_work; 742 struct work_struct dynamic_ps_disable_work; 743 struct timer_list dynamic_ps_timer; 744 745 int user_power_level; /* in dBm */ 746 int power_constr_level; /* in dBm */ 747 748 #ifdef CONFIG_MAC80211_DEBUGFS 749 struct local_debugfsdentries { 750 struct dentry *rcdir; 751 struct dentry *rcname; 752 struct dentry *frequency; 753 struct dentry *rts_threshold; 754 struct dentry *fragmentation_threshold; 755 struct dentry *short_retry_limit; 756 struct dentry *long_retry_limit; 757 struct dentry *total_ps_buffered; 758 struct dentry *wep_iv; 759 struct dentry *tsf; 760 struct dentry *reset; 761 struct dentry *statistics; 762 struct local_debugfsdentries_statsdentries { 763 struct dentry *transmitted_fragment_count; 764 struct dentry *multicast_transmitted_frame_count; 765 struct dentry *failed_count; 766 struct dentry *retry_count; 767 struct dentry *multiple_retry_count; 768 struct dentry *frame_duplicate_count; 769 struct dentry *received_fragment_count; 770 struct dentry *multicast_received_frame_count; 771 struct dentry *transmitted_frame_count; 772 struct dentry *wep_undecryptable_count; 773 struct dentry *num_scans; 774 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 775 struct dentry *tx_handlers_drop; 776 struct dentry *tx_handlers_queued; 777 struct dentry *tx_handlers_drop_unencrypted; 778 struct dentry *tx_handlers_drop_fragment; 779 struct dentry *tx_handlers_drop_wep; 780 struct dentry *tx_handlers_drop_not_assoc; 781 struct dentry *tx_handlers_drop_unauth_port; 782 struct dentry *rx_handlers_drop; 783 struct dentry *rx_handlers_queued; 784 struct dentry *rx_handlers_drop_nullfunc; 785 struct dentry *rx_handlers_drop_defrag; 786 struct dentry *rx_handlers_drop_short; 787 struct dentry *rx_handlers_drop_passive_scan; 788 struct dentry *tx_expand_skb_head; 789 struct dentry *tx_expand_skb_head_cloned; 790 struct dentry *rx_expand_skb_head; 791 struct dentry *rx_expand_skb_head2; 792 struct dentry *rx_handlers_fragments; 793 struct dentry *tx_status_drop; 794 #endif 795 struct dentry *dot11ACKFailureCount; 796 struct dentry *dot11RTSFailureCount; 797 struct dentry *dot11FCSErrorCount; 798 struct dentry *dot11RTSSuccessCount; 799 } stats; 800 struct dentry *stations; 801 struct dentry *keys; 802 } debugfs; 803 #endif 804 }; 805 806 static inline struct ieee80211_sub_if_data * 807 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 808 { 809 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 810 811 BUG_ON(!local || local->mdev == dev); 812 813 return netdev_priv(dev); 814 } 815 816 /* this struct represents 802.11n's RA/TID combination */ 817 struct ieee80211_ra_tid { 818 u8 ra[ETH_ALEN]; 819 u16 tid; 820 }; 821 822 /* Parsed Information Elements */ 823 struct ieee802_11_elems { 824 u8 *ie_start; 825 size_t total_len; 826 827 /* pointers to IEs */ 828 u8 *ssid; 829 u8 *supp_rates; 830 u8 *fh_params; 831 u8 *ds_params; 832 u8 *cf_params; 833 u8 *tim; 834 u8 *ibss_params; 835 u8 *challenge; 836 u8 *wpa; 837 u8 *rsn; 838 u8 *erp_info; 839 u8 *ext_supp_rates; 840 u8 *wmm_info; 841 u8 *wmm_param; 842 struct ieee80211_ht_cap *ht_cap_elem; 843 struct ieee80211_ht_info *ht_info_elem; 844 u8 *mesh_config; 845 u8 *mesh_id; 846 u8 *peer_link; 847 u8 *preq; 848 u8 *prep; 849 u8 *perr; 850 u8 *ch_switch_elem; 851 u8 *country_elem; 852 u8 *pwr_constr_elem; 853 u8 *quiet_elem; /* first quite element */ 854 u8 *timeout_int; 855 856 /* length of them, respectively */ 857 u8 ssid_len; 858 u8 supp_rates_len; 859 u8 fh_params_len; 860 u8 ds_params_len; 861 u8 cf_params_len; 862 u8 tim_len; 863 u8 ibss_params_len; 864 u8 challenge_len; 865 u8 wpa_len; 866 u8 rsn_len; 867 u8 erp_info_len; 868 u8 ext_supp_rates_len; 869 u8 wmm_info_len; 870 u8 wmm_param_len; 871 u8 mesh_config_len; 872 u8 mesh_id_len; 873 u8 peer_link_len; 874 u8 preq_len; 875 u8 prep_len; 876 u8 perr_len; 877 u8 ch_switch_elem_len; 878 u8 country_elem_len; 879 u8 pwr_constr_elem_len; 880 u8 quiet_elem_len; 881 u8 num_of_quiet_elem; /* can be more the one */ 882 u8 timeout_int_len; 883 }; 884 885 static inline struct ieee80211_local *hw_to_local( 886 struct ieee80211_hw *hw) 887 { 888 return container_of(hw, struct ieee80211_local, hw); 889 } 890 891 static inline struct ieee80211_hw *local_to_hw( 892 struct ieee80211_local *local) 893 { 894 return &local->hw; 895 } 896 897 898 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 899 { 900 return compare_ether_addr(raddr, addr) == 0 || 901 is_broadcast_ether_addr(raddr); 902 } 903 904 905 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 906 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed); 907 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 908 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 909 u32 changed); 910 void ieee80211_configure_filter(struct ieee80211_local *local); 911 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 912 913 /* wireless extensions */ 914 extern const struct iw_handler_def ieee80211_iw_handler_def; 915 916 /* STA code */ 917 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 918 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, 919 struct sk_buff *skb, 920 struct ieee80211_rx_status *rx_status); 921 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata); 922 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len); 923 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len); 924 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid); 925 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata); 926 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason); 927 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason); 928 void ieee80211_send_pspoll(struct ieee80211_local *local, 929 struct ieee80211_sub_if_data *sdata); 930 931 /* IBSS code */ 932 int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata); 933 int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len); 934 int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len); 935 int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid); 936 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 937 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 938 ieee80211_rx_result 939 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 940 struct ieee80211_rx_status *rx_status); 941 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 942 u8 *bssid, u8 *addr, u32 supp_rates); 943 944 /* scan/BSS handling */ 945 void ieee80211_scan_work(struct work_struct *work); 946 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 947 struct cfg80211_scan_request *req); 948 int ieee80211_scan_results(struct ieee80211_local *local, 949 struct iw_request_info *info, 950 char *buf, size_t len); 951 ieee80211_rx_result 952 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, 953 struct sk_buff *skb, 954 struct ieee80211_rx_status *rx_status); 955 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, 956 const char *ie, size_t len); 957 958 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 959 void ieee80211_scan_failed(struct ieee80211_local *local); 960 int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, 961 struct cfg80211_scan_request *req); 962 struct ieee80211_bss * 963 ieee80211_bss_info_update(struct ieee80211_local *local, 964 struct ieee80211_rx_status *rx_status, 965 struct ieee80211_mgmt *mgmt, 966 size_t len, 967 struct ieee802_11_elems *elems, 968 struct ieee80211_channel *channel, 969 bool beacon); 970 struct ieee80211_bss * 971 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 972 u8 *ssid, u8 ssid_len); 973 void ieee80211_rx_bss_put(struct ieee80211_local *local, 974 struct ieee80211_bss *bss); 975 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid, 976 int freq, u8 *ssid, u8 ssid_len); 977 978 /* interface handling */ 979 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 980 struct net_device **new_dev, enum nl80211_iftype type, 981 struct vif_params *params); 982 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 983 enum nl80211_iftype type); 984 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 985 void ieee80211_remove_interfaces(struct ieee80211_local *local); 986 987 /* tx handling */ 988 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 989 void ieee80211_tx_pending(unsigned long data); 990 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 991 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 992 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 993 994 /* HT */ 995 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, 996 struct ieee80211_ht_cap *ht_cap_ie, 997 struct ieee80211_sta_ht_cap *ht_cap); 998 u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, 999 struct ieee80211_ht_info *hti, 1000 u16 ap_ht_cap_flags); 1001 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 1002 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1003 const u8 *da, u16 tid, 1004 u16 initiator, u16 reason_code); 1005 1006 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da, 1007 u16 tid, u16 initiator, u16 reason); 1008 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1009 u16 initiator, u16 reason); 1010 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta); 1011 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1012 struct sta_info *sta, 1013 struct ieee80211_mgmt *mgmt, size_t len); 1014 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1015 struct sta_info *sta, 1016 struct ieee80211_mgmt *mgmt, 1017 size_t len); 1018 void ieee80211_process_addba_request(struct ieee80211_local *local, 1019 struct sta_info *sta, 1020 struct ieee80211_mgmt *mgmt, 1021 size_t len); 1022 1023 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1024 enum ieee80211_back_parties initiator); 1025 1026 /* Spectrum management */ 1027 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1028 struct ieee80211_mgmt *mgmt, 1029 size_t len); 1030 void ieee80211_chswitch_timer(unsigned long data); 1031 void ieee80211_chswitch_work(struct work_struct *work); 1032 void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata, 1033 struct ieee80211_channel_sw_ie *sw_elem, 1034 struct ieee80211_bss *bss); 1035 void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, 1036 u16 capab_info, u8 *pwr_constr_elem, 1037 u8 pwr_constr_elem_len); 1038 1039 /* Suspend/resume */ 1040 #ifdef CONFIG_PM 1041 int __ieee80211_suspend(struct ieee80211_hw *hw); 1042 int __ieee80211_resume(struct ieee80211_hw *hw); 1043 #else 1044 static inline int __ieee80211_suspend(struct ieee80211_hw *hw) 1045 { 1046 return 0; 1047 } 1048 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1049 { 1050 return 0; 1051 } 1052 #endif 1053 1054 /* utility functions/constants */ 1055 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1056 extern const unsigned char rfc1042_header[6]; 1057 extern const unsigned char bridge_tunnel_header[6]; 1058 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1059 enum nl80211_iftype type); 1060 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1061 int rate, int erp, int short_preamble); 1062 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1063 struct ieee80211_hdr *hdr); 1064 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1065 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1066 int encrypt); 1067 void ieee802_11_parse_elems(u8 *start, size_t len, 1068 struct ieee802_11_elems *elems); 1069 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq); 1070 u32 ieee80211_mandatory_rates(struct ieee80211_local *local, 1071 enum ieee80211_band band); 1072 1073 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1074 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1075 void ieee80211_dynamic_ps_timer(unsigned long data); 1076 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1077 struct ieee80211_sub_if_data *sdata, 1078 int powersave); 1079 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1080 struct ieee80211_hdr *hdr); 1081 void ieee80211_beacon_loss_work(struct work_struct *work); 1082 1083 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1084 enum queue_stop_reason reason); 1085 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1086 enum queue_stop_reason reason); 1087 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1088 enum queue_stop_reason reason); 1089 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1090 enum queue_stop_reason reason); 1091 1092 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 1093 u16 transaction, u16 auth_alg, 1094 u8 *extra, size_t extra_len, 1095 const u8 *bssid, int encrypt); 1096 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 1097 u8 *ssid, size_t ssid_len, 1098 u8 *ie, size_t ie_len); 1099 1100 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, 1101 const size_t supp_rates_len, 1102 const u8 *supp_rates); 1103 u32 ieee80211_sta_get_rates(struct ieee80211_local *local, 1104 struct ieee802_11_elems *elems, 1105 enum ieee80211_band band); 1106 1107 #ifdef CONFIG_MAC80211_NOINLINE 1108 #define debug_noinline noinline 1109 #else 1110 #define debug_noinline 1111 #endif 1112 1113 #endif /* IEEE80211_I_H */ 1114