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/wireless.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 12 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 struct ieee80211_fragment_entry { 60 unsigned long first_frag_time; 61 unsigned int seq; 62 unsigned int rx_queue; 63 unsigned int last_frag; 64 unsigned int extra_len; 65 struct sk_buff_head skb_list; 66 int ccmp; /* Whether fragments were encrypted with CCMP */ 67 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 68 }; 69 70 71 struct ieee80211_bss { 72 struct list_head list; 73 struct ieee80211_bss *hnext; 74 size_t ssid_len; 75 76 atomic_t users; 77 78 u8 bssid[ETH_ALEN]; 79 u8 ssid[IEEE80211_MAX_SSID_LEN]; 80 u8 dtim_period; 81 u16 capability; /* host byte order */ 82 enum ieee80211_band band; 83 int freq; 84 int signal, noise, qual; 85 u8 *ies; /* all information elements from the last Beacon or Probe 86 * Response frames; note Beacon frame is not allowed to 87 * override values from Probe Response */ 88 size_t ies_len; 89 bool wmm_used; 90 #ifdef CONFIG_MAC80211_MESH 91 u8 *mesh_id; 92 size_t mesh_id_len; 93 u8 *mesh_cfg; 94 #endif 95 #define IEEE80211_MAX_SUPP_RATES 32 96 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 97 size_t supp_rates_len; 98 u64 timestamp; 99 int beacon_int; 100 101 unsigned long last_probe_resp; 102 unsigned long last_update; 103 104 /* during assocation, we save an ERP value from a probe response so 105 * that we can feed ERP info to the driver when handling the 106 * association completes. these fields probably won't be up-to-date 107 * otherwise, you probably don't want to use them. */ 108 int has_erp_value; 109 u8 erp_value; 110 }; 111 112 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) 113 { 114 #ifdef CONFIG_MAC80211_MESH 115 return bss->mesh_cfg; 116 #endif 117 return NULL; 118 } 119 120 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) 121 { 122 #ifdef CONFIG_MAC80211_MESH 123 return bss->mesh_id; 124 #endif 125 return NULL; 126 } 127 128 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) 129 { 130 #ifdef CONFIG_MAC80211_MESH 131 return bss->mesh_id_len; 132 #endif 133 return 0; 134 } 135 136 137 typedef unsigned __bitwise__ ieee80211_tx_result; 138 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 139 #define TX_DROP ((__force ieee80211_tx_result) 1u) 140 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 141 142 #define IEEE80211_TX_FRAGMENTED BIT(0) 143 #define IEEE80211_TX_UNICAST BIT(1) 144 #define IEEE80211_TX_PS_BUFFERED BIT(2) 145 #define IEEE80211_TX_PROBE_LAST_FRAG BIT(3) 146 147 struct ieee80211_tx_data { 148 struct sk_buff *skb; 149 struct net_device *dev; 150 struct ieee80211_local *local; 151 struct ieee80211_sub_if_data *sdata; 152 struct sta_info *sta; 153 struct ieee80211_key *key; 154 155 struct ieee80211_channel *channel; 156 s8 rate_idx; 157 /* use this rate (if set) for last fragment; rate can 158 * be set to lower rate for the first fragments, e.g., 159 * when using CTS protection with IEEE 802.11g. */ 160 s8 last_frag_rate_idx; 161 162 /* Extra fragments (in addition to the first fragment 163 * in skb) */ 164 struct sk_buff **extra_frag; 165 int num_extra_frag; 166 167 u16 ethertype; 168 unsigned int flags; 169 }; 170 171 172 typedef unsigned __bitwise__ ieee80211_rx_result; 173 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 174 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 175 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 176 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 177 178 #define IEEE80211_RX_IN_SCAN BIT(0) 179 /* frame is destined to interface currently processed (incl. multicast frames) */ 180 #define IEEE80211_RX_RA_MATCH BIT(1) 181 #define IEEE80211_RX_AMSDU BIT(2) 182 #define IEEE80211_RX_CMNTR_REPORTED BIT(3) 183 #define IEEE80211_RX_FRAGMENTED BIT(4) 184 185 struct ieee80211_rx_data { 186 struct sk_buff *skb; 187 struct net_device *dev; 188 struct ieee80211_local *local; 189 struct ieee80211_sub_if_data *sdata; 190 struct sta_info *sta; 191 struct ieee80211_key *key; 192 struct ieee80211_rx_status *status; 193 struct ieee80211_rate *rate; 194 195 u16 ethertype; 196 unsigned int flags; 197 int sent_ps_buffered; 198 int queue; 199 u32 tkip_iv32; 200 u16 tkip_iv16; 201 }; 202 203 struct ieee80211_tx_stored_packet { 204 struct sk_buff *skb; 205 struct sk_buff **extra_frag; 206 s8 last_frag_rate_idx; 207 int num_extra_frag; 208 bool last_frag_rate_ctrl_probe; 209 }; 210 211 struct beacon_data { 212 u8 *head, *tail; 213 int head_len, tail_len; 214 int dtim_period; 215 }; 216 217 struct ieee80211_if_ap { 218 struct beacon_data *beacon; 219 220 struct list_head vlans; 221 222 u8 ssid[IEEE80211_MAX_SSID_LEN]; 223 size_t ssid_len; 224 225 /* yes, this looks ugly, but guarantees that we can later use 226 * bitmap_empty :) 227 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 228 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 229 struct sk_buff_head ps_bc_buf; 230 atomic_t num_sta_ps; /* number of stations in PS mode */ 231 int dtim_count; 232 }; 233 234 struct ieee80211_if_wds { 235 struct sta_info *sta; 236 u8 remote_addr[ETH_ALEN]; 237 }; 238 239 struct ieee80211_if_vlan { 240 struct list_head list; 241 }; 242 243 struct mesh_stats { 244 __u32 fwded_frames; /* Mesh forwarded frames */ 245 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 246 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 247 atomic_t estab_plinks; 248 }; 249 250 #define PREQ_Q_F_START 0x1 251 #define PREQ_Q_F_REFRESH 0x2 252 struct mesh_preq_queue { 253 struct list_head list; 254 u8 dst[ETH_ALEN]; 255 u8 flags; 256 }; 257 258 struct mesh_config { 259 /* Timeouts in ms */ 260 /* Mesh plink management parameters */ 261 u16 dot11MeshRetryTimeout; 262 u16 dot11MeshConfirmTimeout; 263 u16 dot11MeshHoldingTimeout; 264 u16 dot11MeshMaxPeerLinks; 265 u8 dot11MeshMaxRetries; 266 u8 dot11MeshTTL; 267 bool auto_open_plinks; 268 /* HWMP parameters */ 269 u8 dot11MeshHWMPmaxPREQretries; 270 u32 path_refresh_time; 271 u16 min_discovery_timeout; 272 u32 dot11MeshHWMPactivePathTimeout; 273 u16 dot11MeshHWMPpreqMinInterval; 274 u16 dot11MeshHWMPnetDiameterTraversalTime; 275 }; 276 277 278 /* flags used in struct ieee80211_if_sta.flags */ 279 #define IEEE80211_STA_SSID_SET BIT(0) 280 #define IEEE80211_STA_BSSID_SET BIT(1) 281 #define IEEE80211_STA_PREV_BSSID_SET BIT(2) 282 #define IEEE80211_STA_AUTHENTICATED BIT(3) 283 #define IEEE80211_STA_ASSOCIATED BIT(4) 284 #define IEEE80211_STA_PROBEREQ_POLL BIT(5) 285 #define IEEE80211_STA_CREATE_IBSS BIT(6) 286 #define IEEE80211_STA_MIXED_CELL BIT(7) 287 #define IEEE80211_STA_WMM_ENABLED BIT(8) 288 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10) 289 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11) 290 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) 291 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13) 292 /* flags for MLME request */ 293 #define IEEE80211_STA_REQ_SCAN 0 294 #define IEEE80211_STA_REQ_DIRECT_PROBE 1 295 #define IEEE80211_STA_REQ_AUTH 2 296 #define IEEE80211_STA_REQ_RUN 3 297 298 /* STA/IBSS MLME states */ 299 enum ieee80211_sta_mlme_state { 300 IEEE80211_STA_MLME_DISABLED, 301 IEEE80211_STA_MLME_DIRECT_PROBE, 302 IEEE80211_STA_MLME_AUTHENTICATE, 303 IEEE80211_STA_MLME_ASSOCIATE, 304 IEEE80211_STA_MLME_ASSOCIATED, 305 IEEE80211_STA_MLME_IBSS_SEARCH, 306 IEEE80211_STA_MLME_IBSS_JOINED, 307 }; 308 309 /* bitfield of allowed auth algs */ 310 #define IEEE80211_AUTH_ALG_OPEN BIT(0) 311 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 312 #define IEEE80211_AUTH_ALG_LEAP BIT(2) 313 314 struct ieee80211_if_sta { 315 struct timer_list timer; 316 struct work_struct work; 317 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 318 u8 ssid[IEEE80211_MAX_SSID_LEN]; 319 enum ieee80211_sta_mlme_state state; 320 size_t ssid_len; 321 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 322 size_t scan_ssid_len; 323 u16 aid; 324 u16 ap_capab, capab; 325 u8 *extra_ie; /* to be added to the end of AssocReq */ 326 size_t extra_ie_len; 327 328 /* The last AssocReq/Resp IEs */ 329 u8 *assocreq_ies, *assocresp_ies; 330 size_t assocreq_ies_len, assocresp_ies_len; 331 332 struct sk_buff_head skb_queue; 333 334 int assoc_scan_tries; /* number of scans done pre-association */ 335 int direct_probe_tries; /* retries for direct probes */ 336 int auth_tries; /* retries for auth req */ 337 int assoc_tries; /* retries for assoc req */ 338 339 unsigned long request; 340 341 unsigned long last_probe; 342 343 unsigned int flags; 344 345 unsigned int auth_algs; /* bitfield of allowed auth algs */ 346 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 347 int auth_transaction; 348 349 unsigned long ibss_join_req; 350 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 351 u32 supp_rates_bits[IEEE80211_NUM_BANDS]; 352 353 int wmm_last_param_set; 354 }; 355 356 struct ieee80211_if_mesh { 357 struct work_struct work; 358 struct timer_list housekeeping_timer; 359 struct timer_list mesh_path_timer; 360 struct sk_buff_head skb_queue; 361 362 bool housekeeping; 363 364 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 365 size_t mesh_id_len; 366 /* Active Path Selection Protocol Identifier */ 367 u8 mesh_pp_id[4]; 368 /* Active Path Selection Metric Identifier */ 369 u8 mesh_pm_id[4]; 370 /* Congestion Control Mode Identifier */ 371 u8 mesh_cc_id[4]; 372 /* Local mesh Destination Sequence Number */ 373 u32 dsn; 374 /* Last used PREQ ID */ 375 u32 preq_id; 376 atomic_t mpaths; 377 /* Timestamp of last DSN update */ 378 unsigned long last_dsn_update; 379 /* Timestamp of last DSN sent */ 380 unsigned long last_preq; 381 struct mesh_rmc *rmc; 382 spinlock_t mesh_preq_queue_lock; 383 struct mesh_preq_queue preq_queue; 384 int preq_queue_len; 385 struct mesh_stats mshstats; 386 struct mesh_config mshcfg; 387 u32 mesh_seqnum; 388 bool accepting_plinks; 389 }; 390 391 #ifdef CONFIG_MAC80211_MESH 392 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 393 do { (msh)->mshstats.name++; } while (0) 394 #else 395 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 396 do { } while (0) 397 #endif 398 399 /** 400 * enum ieee80211_sub_if_data_flags - virtual interface flags 401 * 402 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 403 * @IEEE80211_SDATA_PROMISC: interface is promisc 404 * @IEEE80211_SDATA_USERSPACE_MLME: userspace MLME is active 405 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 406 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 407 * associated stations and deliver multicast frames both 408 * back to wireless media and to the local net stack. 409 */ 410 enum ieee80211_sub_if_data_flags { 411 IEEE80211_SDATA_ALLMULTI = BIT(0), 412 IEEE80211_SDATA_PROMISC = BIT(1), 413 IEEE80211_SDATA_USERSPACE_MLME = BIT(2), 414 IEEE80211_SDATA_OPERATING_GMODE = BIT(3), 415 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(4), 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 struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 439 struct ieee80211_key *default_key; 440 441 /* BSS configuration for this interface. */ 442 struct ieee80211_bss_conf bss_conf; 443 444 /* 445 * AP this belongs to: self in AP mode and 446 * corresponding AP in VLAN mode, NULL for 447 * all others (might be needed later in IBSS) 448 */ 449 struct ieee80211_if_ap *bss; 450 451 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 452 int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 453 454 union { 455 struct ieee80211_if_ap ap; 456 struct ieee80211_if_wds wds; 457 struct ieee80211_if_vlan vlan; 458 struct ieee80211_if_sta sta; 459 #ifdef CONFIG_MAC80211_MESH 460 struct ieee80211_if_mesh mesh; 461 #endif 462 u32 mntr_flags; 463 } u; 464 465 #ifdef CONFIG_MAC80211_DEBUGFS 466 struct dentry *debugfsdir; 467 union { 468 struct { 469 struct dentry *drop_unencrypted; 470 struct dentry *state; 471 struct dentry *bssid; 472 struct dentry *prev_bssid; 473 struct dentry *ssid_len; 474 struct dentry *aid; 475 struct dentry *ap_capab; 476 struct dentry *capab; 477 struct dentry *extra_ie_len; 478 struct dentry *auth_tries; 479 struct dentry *assoc_tries; 480 struct dentry *auth_algs; 481 struct dentry *auth_alg; 482 struct dentry *auth_transaction; 483 struct dentry *flags; 484 struct dentry *force_unicast_rateidx; 485 struct dentry *max_ratectrl_rateidx; 486 } sta; 487 struct { 488 struct dentry *drop_unencrypted; 489 struct dentry *num_sta_ps; 490 struct dentry *dtim_count; 491 struct dentry *force_unicast_rateidx; 492 struct dentry *max_ratectrl_rateidx; 493 struct dentry *num_buffered_multicast; 494 } ap; 495 struct { 496 struct dentry *drop_unencrypted; 497 struct dentry *peer; 498 struct dentry *force_unicast_rateidx; 499 struct dentry *max_ratectrl_rateidx; 500 } wds; 501 struct { 502 struct dentry *drop_unencrypted; 503 struct dentry *force_unicast_rateidx; 504 struct dentry *max_ratectrl_rateidx; 505 } vlan; 506 struct { 507 struct dentry *mode; 508 } monitor; 509 } debugfs; 510 struct { 511 struct dentry *default_key; 512 } common_debugfs; 513 514 #ifdef CONFIG_MAC80211_MESH 515 struct dentry *mesh_stats_dir; 516 struct { 517 struct dentry *fwded_frames; 518 struct dentry *dropped_frames_ttl; 519 struct dentry *dropped_frames_no_route; 520 struct dentry *estab_plinks; 521 struct timer_list mesh_path_timer; 522 } mesh_stats; 523 524 struct dentry *mesh_config_dir; 525 struct { 526 struct dentry *dot11MeshRetryTimeout; 527 struct dentry *dot11MeshConfirmTimeout; 528 struct dentry *dot11MeshHoldingTimeout; 529 struct dentry *dot11MeshMaxRetries; 530 struct dentry *dot11MeshTTL; 531 struct dentry *auto_open_plinks; 532 struct dentry *dot11MeshMaxPeerLinks; 533 struct dentry *dot11MeshHWMPactivePathTimeout; 534 struct dentry *dot11MeshHWMPpreqMinInterval; 535 struct dentry *dot11MeshHWMPnetDiameterTraversalTime; 536 struct dentry *dot11MeshHWMPmaxPREQretries; 537 struct dentry *path_refresh_time; 538 struct dentry *min_discovery_timeout; 539 } mesh_config; 540 #endif 541 542 #endif 543 /* must be last, dynamically sized area in this! */ 544 struct ieee80211_vif vif; 545 }; 546 547 static inline 548 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 549 { 550 return container_of(p, struct ieee80211_sub_if_data, vif); 551 } 552 553 static inline void 554 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, 555 u8 mesh_id_len, u8 *mesh_id) 556 { 557 #ifdef CONFIG_MAC80211_MESH 558 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 559 ifmsh->mesh_id_len = mesh_id_len; 560 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); 561 #else 562 WARN_ON(1); 563 #endif 564 } 565 566 enum { 567 IEEE80211_RX_MSG = 1, 568 IEEE80211_TX_STATUS_MSG = 2, 569 IEEE80211_DELBA_MSG = 3, 570 IEEE80211_ADDBA_MSG = 4, 571 }; 572 573 /* maximum number of hardware queues we support. */ 574 #define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES) 575 576 struct ieee80211_master_priv { 577 struct ieee80211_local *local; 578 }; 579 580 struct ieee80211_local { 581 /* embed the driver visible part. 582 * don't cast (use the static inlines below), but we keep 583 * it first anyway so they become a no-op */ 584 struct ieee80211_hw hw; 585 586 const struct ieee80211_ops *ops; 587 588 unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)]; 589 590 struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 591 int open_count; 592 int monitors, cooked_mntrs; 593 /* number of interfaces with corresponding FIF_ flags */ 594 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss; 595 unsigned int filter_flags; /* FIF_* */ 596 struct iw_statistics wstats; 597 u8 wstats_flags; 598 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 599 int tx_headroom; /* required headroom for hardware/radiotap */ 600 601 /* Tasklet and skb queue to process calls from IRQ mode. All frames 602 * added to skb_queue will be processed, but frames in 603 * skb_queue_unreliable may be dropped if the total length of these 604 * queues increases over the limit. */ 605 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 606 struct tasklet_struct tasklet; 607 struct sk_buff_head skb_queue; 608 struct sk_buff_head skb_queue_unreliable; 609 610 /* Station data */ 611 /* 612 * The lock only protects the list, hash, timer and counter 613 * against manipulation, reads are done in RCU. Additionally, 614 * the lock protects each BSS's TIM bitmap. 615 */ 616 spinlock_t sta_lock; 617 unsigned long num_sta; 618 struct list_head sta_list; 619 struct list_head sta_flush_list; 620 struct work_struct sta_flush_work; 621 struct sta_info *sta_hash[STA_HASH_SIZE]; 622 struct timer_list sta_cleanup; 623 624 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)]; 625 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)]; 626 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES]; 627 struct tasklet_struct tx_pending_tasklet; 628 629 /* number of interfaces with corresponding IFF_ flags */ 630 atomic_t iff_allmultis, iff_promiscs; 631 632 struct rate_control_ref *rate_ctrl; 633 634 int rts_threshold; 635 int fragmentation_threshold; 636 int short_retry_limit; /* dot11ShortRetryLimit */ 637 int long_retry_limit; /* dot11LongRetryLimit */ 638 639 struct crypto_blkcipher *wep_tx_tfm; 640 struct crypto_blkcipher *wep_rx_tfm; 641 u32 wep_iv; 642 643 struct list_head interfaces; 644 645 /* 646 * Key lock, protects sdata's key_list and sta_info's 647 * key pointers (write access, they're RCU.) 648 */ 649 spinlock_t key_lock; 650 651 652 /* Scanning and BSS list */ 653 bool sw_scanning, hw_scanning; 654 int scan_channel_idx; 655 enum ieee80211_band scan_band; 656 657 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 658 unsigned long last_scan_completed; 659 struct delayed_work scan_work; 660 struct ieee80211_sub_if_data *scan_sdata; 661 struct ieee80211_channel *oper_channel, *scan_channel; 662 u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 663 size_t scan_ssid_len; 664 struct list_head bss_list; 665 struct ieee80211_bss *bss_hash[STA_HASH_SIZE]; 666 spinlock_t bss_lock; 667 668 /* SNMP counters */ 669 /* dot11CountersTable */ 670 u32 dot11TransmittedFragmentCount; 671 u32 dot11MulticastTransmittedFrameCount; 672 u32 dot11FailedCount; 673 u32 dot11RetryCount; 674 u32 dot11MultipleRetryCount; 675 u32 dot11FrameDuplicateCount; 676 u32 dot11ReceivedFragmentCount; 677 u32 dot11MulticastReceivedFrameCount; 678 u32 dot11TransmittedFrameCount; 679 u32 dot11WEPUndecryptableCount; 680 681 #ifdef CONFIG_MAC80211_LEDS 682 int tx_led_counter, rx_led_counter; 683 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; 684 char tx_led_name[32], rx_led_name[32], 685 assoc_led_name[32], radio_led_name[32]; 686 #endif 687 688 #ifdef CONFIG_MAC80211_DEBUGFS 689 struct work_struct sta_debugfs_add; 690 #endif 691 692 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 693 /* TX/RX handler statistics */ 694 unsigned int tx_handlers_drop; 695 unsigned int tx_handlers_queued; 696 unsigned int tx_handlers_drop_unencrypted; 697 unsigned int tx_handlers_drop_fragment; 698 unsigned int tx_handlers_drop_wep; 699 unsigned int tx_handlers_drop_not_assoc; 700 unsigned int tx_handlers_drop_unauth_port; 701 unsigned int rx_handlers_drop; 702 unsigned int rx_handlers_queued; 703 unsigned int rx_handlers_drop_nullfunc; 704 unsigned int rx_handlers_drop_defrag; 705 unsigned int rx_handlers_drop_short; 706 unsigned int rx_handlers_drop_passive_scan; 707 unsigned int tx_expand_skb_head; 708 unsigned int tx_expand_skb_head_cloned; 709 unsigned int rx_expand_skb_head; 710 unsigned int rx_expand_skb_head2; 711 unsigned int rx_handlers_fragments; 712 unsigned int tx_status_drop; 713 #define I802_DEBUG_INC(c) (c)++ 714 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 715 #define I802_DEBUG_INC(c) do { } while (0) 716 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 717 718 719 int total_ps_buffered; /* total number of all buffered unicast and 720 * multicast packets for power saving stations 721 */ 722 int wifi_wme_noack_test; 723 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 724 725 #ifdef CONFIG_MAC80211_DEBUGFS 726 struct local_debugfsdentries { 727 struct dentry *rcdir; 728 struct dentry *rcname; 729 struct dentry *frequency; 730 struct dentry *antenna_sel_tx; 731 struct dentry *antenna_sel_rx; 732 struct dentry *rts_threshold; 733 struct dentry *fragmentation_threshold; 734 struct dentry *short_retry_limit; 735 struct dentry *long_retry_limit; 736 struct dentry *total_ps_buffered; 737 struct dentry *wep_iv; 738 struct dentry *statistics; 739 struct local_debugfsdentries_statsdentries { 740 struct dentry *transmitted_fragment_count; 741 struct dentry *multicast_transmitted_frame_count; 742 struct dentry *failed_count; 743 struct dentry *retry_count; 744 struct dentry *multiple_retry_count; 745 struct dentry *frame_duplicate_count; 746 struct dentry *received_fragment_count; 747 struct dentry *multicast_received_frame_count; 748 struct dentry *transmitted_frame_count; 749 struct dentry *wep_undecryptable_count; 750 struct dentry *num_scans; 751 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 752 struct dentry *tx_handlers_drop; 753 struct dentry *tx_handlers_queued; 754 struct dentry *tx_handlers_drop_unencrypted; 755 struct dentry *tx_handlers_drop_fragment; 756 struct dentry *tx_handlers_drop_wep; 757 struct dentry *tx_handlers_drop_not_assoc; 758 struct dentry *tx_handlers_drop_unauth_port; 759 struct dentry *rx_handlers_drop; 760 struct dentry *rx_handlers_queued; 761 struct dentry *rx_handlers_drop_nullfunc; 762 struct dentry *rx_handlers_drop_defrag; 763 struct dentry *rx_handlers_drop_short; 764 struct dentry *rx_handlers_drop_passive_scan; 765 struct dentry *tx_expand_skb_head; 766 struct dentry *tx_expand_skb_head_cloned; 767 struct dentry *rx_expand_skb_head; 768 struct dentry *rx_expand_skb_head2; 769 struct dentry *rx_handlers_fragments; 770 struct dentry *tx_status_drop; 771 #endif 772 struct dentry *dot11ACKFailureCount; 773 struct dentry *dot11RTSFailureCount; 774 struct dentry *dot11FCSErrorCount; 775 struct dentry *dot11RTSSuccessCount; 776 } stats; 777 struct dentry *stations; 778 struct dentry *keys; 779 } debugfs; 780 #endif 781 }; 782 783 static inline struct ieee80211_sub_if_data * 784 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 785 { 786 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 787 788 BUG_ON(!local || local->mdev == dev); 789 790 return netdev_priv(dev); 791 } 792 793 /* this struct represents 802.11n's RA/TID combination */ 794 struct ieee80211_ra_tid { 795 u8 ra[ETH_ALEN]; 796 u16 tid; 797 }; 798 799 /* Parsed Information Elements */ 800 struct ieee802_11_elems { 801 u8 *ie_start; 802 size_t total_len; 803 804 /* pointers to IEs */ 805 u8 *ssid; 806 u8 *supp_rates; 807 u8 *fh_params; 808 u8 *ds_params; 809 u8 *cf_params; 810 u8 *tim; 811 u8 *ibss_params; 812 u8 *challenge; 813 u8 *wpa; 814 u8 *rsn; 815 u8 *erp_info; 816 u8 *ext_supp_rates; 817 u8 *wmm_info; 818 u8 *wmm_param; 819 struct ieee80211_ht_cap *ht_cap_elem; 820 struct ieee80211_ht_addt_info *ht_info_elem; 821 u8 *mesh_config; 822 u8 *mesh_id; 823 u8 *peer_link; 824 u8 *preq; 825 u8 *prep; 826 u8 *perr; 827 u8 *ch_switch_elem; 828 u8 *country_elem; 829 u8 *pwr_constr_elem; 830 u8 *quiet_elem; /* first quite element */ 831 832 /* length of them, respectively */ 833 u8 ssid_len; 834 u8 supp_rates_len; 835 u8 fh_params_len; 836 u8 ds_params_len; 837 u8 cf_params_len; 838 u8 tim_len; 839 u8 ibss_params_len; 840 u8 challenge_len; 841 u8 wpa_len; 842 u8 rsn_len; 843 u8 erp_info_len; 844 u8 ext_supp_rates_len; 845 u8 wmm_info_len; 846 u8 wmm_param_len; 847 u8 mesh_config_len; 848 u8 mesh_id_len; 849 u8 peer_link_len; 850 u8 preq_len; 851 u8 prep_len; 852 u8 perr_len; 853 u8 ch_switch_elem_len; 854 u8 country_elem_len; 855 u8 pwr_constr_elem_len; 856 u8 quiet_elem_len; 857 u8 num_of_quiet_elem; /* can be more the one */ 858 }; 859 860 static inline struct ieee80211_local *hw_to_local( 861 struct ieee80211_hw *hw) 862 { 863 return container_of(hw, struct ieee80211_local, hw); 864 } 865 866 static inline struct ieee80211_hw *local_to_hw( 867 struct ieee80211_local *local) 868 { 869 return &local->hw; 870 } 871 872 struct sta_attribute { 873 struct attribute attr; 874 ssize_t (*show)(const struct sta_info *, char *buf); 875 ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 876 }; 877 878 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 879 { 880 return compare_ether_addr(raddr, addr) == 0 || 881 is_broadcast_ether_addr(raddr); 882 } 883 884 885 int ieee80211_hw_config(struct ieee80211_local *local); 886 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed); 887 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 888 u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, 889 struct ieee80211_ht_info *req_ht_cap, 890 struct ieee80211_ht_bss_info *req_bss_cap); 891 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 892 u32 changed); 893 void ieee80211_configure_filter(struct ieee80211_local *local); 894 895 /* wireless extensions */ 896 extern const struct iw_handler_def ieee80211_iw_handler_def; 897 898 /* STA/IBSS code */ 899 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 900 void ieee80211_scan_work(struct work_struct *work); 901 void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 902 struct ieee80211_rx_status *rx_status); 903 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len); 904 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len); 905 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid); 906 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, 907 struct ieee80211_if_sta *ifsta); 908 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 909 struct sk_buff *skb, u8 *bssid, 910 u8 *addr, u64 supp_rates); 911 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason); 912 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason); 913 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 914 u64 ieee80211_sta_get_rates(struct ieee80211_local *local, 915 struct ieee802_11_elems *elems, 916 enum ieee80211_band band); 917 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, 918 u8 *ssid, size_t ssid_len); 919 920 /* scan/BSS handling */ 921 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 922 u8 *ssid, size_t ssid_len); 923 int ieee80211_scan_results(struct ieee80211_local *local, 924 struct iw_request_info *info, 925 char *buf, size_t len); 926 ieee80211_rx_result 927 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, 928 struct sk_buff *skb, 929 struct ieee80211_rx_status *rx_status); 930 void ieee80211_rx_bss_list_init(struct ieee80211_local *local); 931 void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local); 932 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, 933 char *ie, size_t len); 934 935 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 936 int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata, 937 u8 *ssid, size_t ssid_len); 938 struct ieee80211_bss * 939 ieee80211_bss_info_update(struct ieee80211_local *local, 940 struct ieee80211_rx_status *rx_status, 941 struct ieee80211_mgmt *mgmt, 942 size_t len, 943 struct ieee802_11_elems *elems, 944 int freq, bool beacon); 945 struct ieee80211_bss * 946 ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq, 947 u8 *ssid, u8 ssid_len); 948 struct ieee80211_bss * 949 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, 950 u8 *ssid, u8 ssid_len); 951 void ieee80211_rx_bss_put(struct ieee80211_local *local, 952 struct ieee80211_bss *bss); 953 954 /* interface handling */ 955 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 956 struct net_device **new_dev, enum nl80211_iftype type, 957 struct vif_params *params); 958 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 959 enum nl80211_iftype type); 960 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 961 void ieee80211_remove_interfaces(struct ieee80211_local *local); 962 963 /* tx handling */ 964 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 965 void ieee80211_tx_pending(unsigned long data); 966 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); 967 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); 968 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); 969 970 /* HT */ 971 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, 972 struct ieee80211_ht_info *ht_info); 973 int ieee80211_ht_addt_info_ie_to_ht_bss_info( 974 struct ieee80211_ht_addt_info *ht_add_info_ie, 975 struct ieee80211_ht_bss_info *bss_info); 976 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); 977 978 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da, 979 u16 tid, u16 initiator, u16 reason); 980 void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr); 981 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 982 struct sta_info *sta, 983 struct ieee80211_mgmt *mgmt, size_t len); 984 void ieee80211_process_addba_resp(struct ieee80211_local *local, 985 struct sta_info *sta, 986 struct ieee80211_mgmt *mgmt, 987 size_t len); 988 void ieee80211_process_addba_request(struct ieee80211_local *local, 989 struct sta_info *sta, 990 struct ieee80211_mgmt *mgmt, 991 size_t len); 992 993 /* Spectrum management */ 994 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 995 struct ieee80211_mgmt *mgmt, 996 size_t len); 997 998 /* utility functions/constants */ 999 extern void *mac80211_wiphy_privid; /* for wiphy privid */ 1000 extern const unsigned char rfc1042_header[6]; 1001 extern const unsigned char bridge_tunnel_header[6]; 1002 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, 1003 enum nl80211_iftype type); 1004 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, 1005 int rate, int erp, int short_preamble); 1006 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, 1007 struct ieee80211_hdr *hdr); 1008 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); 1009 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, 1010 int encrypt); 1011 void ieee802_11_parse_elems(u8 *start, size_t len, 1012 struct ieee802_11_elems *elems); 1013 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq); 1014 u64 ieee80211_mandatory_rates(struct ieee80211_local *local, 1015 enum ieee80211_band band); 1016 1017 #ifdef CONFIG_MAC80211_NOINLINE 1018 #define debug_noinline noinline 1019 #else 1020 #define debug_noinline 1021 #endif 1022 1023 #endif /* IEEE80211_I_H */ 1024