2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <net/wireless.h>
25 #include "ieee80211_key.h"
28 /* ieee80211.o internal definitions, etc. These are not included into
29 * low-level drivers. */
32 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
33 #endif /* ETH_P_PAE */
35 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
37 struct ieee80211_local;
39 #define BIT(x) (1 << (x))
41 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 12
56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
57 * reception of at least three fragmented frames. This limit can be increased
58 * by changing this define, at the cost of slower frame reassembly and
59 * increased memory use (about 2 kB of RAM per entry). */
60 #define IEEE80211_FRAGMENT_MAX 4
62 /* Minimum and Maximum TSID used by EDCA. EDCA uses 0~7; HCCA uses 8~15 */
63 #define EDCA_TSID_MIN 0
64 #define EDCA_TSID_MAX 7
66 struct ieee80211_fragment_entry {
67 unsigned long first_frag_time;
69 unsigned int rx_queue;
70 unsigned int last_frag;
71 unsigned int extra_len;
72 struct sk_buff_head skb_list;
73 int ccmp; /* Whether fragments were encrypted with CCMP */
74 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
78 struct ieee80211_sta_bss {
79 struct list_head list;
80 struct ieee80211_sta_bss *hnext;
84 u8 ssid[IEEE80211_MAX_SSID_LEN];
86 u16 capability; /* host byte order */
90 int rssi, signal, noise;
99 #define IEEE80211_MAX_SUPP_RATES 32
100 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
101 size_t supp_rates_len;
106 unsigned long last_update;
112 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
113 } ieee80211_txrx_result;
115 struct ieee80211_txrx_data {
117 struct net_device *dev;
118 struct ieee80211_local *local;
119 struct ieee80211_sub_if_data *sdata;
120 struct sta_info *sta;
122 struct ieee80211_key *key;
123 unsigned int fragmented:1; /* whether the MSDU was fragmented */
126 struct ieee80211_tx_control *control;
127 unsigned int unicast:1;
128 unsigned int ps_buffered:1;
129 unsigned int short_preamble:1;
130 unsigned int probe_last_frag:1;
131 struct ieee80211_hw_mode *mode;
132 struct ieee80211_rate *rate;
133 /* use this rate (if set) for last fragment; rate can
134 * be set to lower rate for the first fragments, e.g.,
135 * when using CTS protection with IEEE 802.11g. */
136 struct ieee80211_rate *last_frag_rate;
137 int last_frag_hwrate;
140 /* Extra fragments (in addition to the first fragment
143 struct sk_buff **extra_frag;
146 struct ieee80211_rx_status *status;
147 int sent_ps_buffered;
151 unsigned int in_scan:1;
152 /* frame is destined to interface currently processed
153 * (including multicast frames) */
154 unsigned int ra_match:1;
155 unsigned int is_agg_frame:1;
158 #ifdef CONFIG_HOSTAPD_WPA_TESTING
160 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
163 /* Stored in sk_buff->cb */
164 struct ieee80211_tx_packet_data {
166 unsigned long jiffies;
167 unsigned int req_tx_status:1;
168 unsigned int do_not_encrypt:1;
169 unsigned int requeue:1;
170 unsigned int mgmt_iface:1;
171 unsigned int queue:4;
174 struct ieee80211_tx_stored_packet {
175 struct ieee80211_tx_control control;
178 struct sk_buff **extra_frag;
179 int last_frag_rateidx;
180 int last_frag_hwrate;
181 struct ieee80211_rate *last_frag_rate;
182 unsigned int last_frag_rate_ctrl_probe:1;
187 TS_STATUS_UNUSED = 0,
188 TS_STATUS_ACTIVE = 1,
189 TS_STATUS_INACTIVE = 2,
190 TS_STATUS_THROTTLING = 3,
194 u32 admitted_time_usec;
198 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
199 (struct ieee80211_txrx_data *tx);
201 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
202 (struct ieee80211_txrx_data *rx);
204 struct ieee80211_if_ap {
205 u8 *beacon_head, *beacon_tail;
206 int beacon_head_len, beacon_tail_len;
208 u8 ssid[IEEE80211_MAX_SSID_LEN];
211 size_t generic_elem_len;
213 /* yes, this looks ugly, but guarantees that we can later use
215 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
216 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
217 atomic_t num_sta_ps; /* number of stations in PS mode */
218 struct sk_buff_head ps_bc_buf;
219 int dtim_period, dtim_count;
220 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
221 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
222 int num_beacons; /* number of TXed beacon frames for this BSS */
225 struct ieee80211_if_wds {
226 u8 remote_addr[ETH_ALEN];
227 struct sta_info *sta;
230 struct ieee80211_if_vlan {
234 struct ieee80211_if_sta {
236 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
237 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
238 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
240 struct timer_list timer;
241 struct work_struct work;
242 struct timer_list admit_timer; /* Recompute EDCA admitted time */
243 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
244 u8 ssid[IEEE80211_MAX_SSID_LEN];
248 u8 *extra_ie; /* to be added to the end of AssocReq */
251 /* The last AssocReq/Resp IEs */
252 u8 *assocreq_ies, *assocresp_ies;
253 size_t assocreq_ies_len, assocresp_ies_len;
255 int auth_tries, assoc_tries;
257 unsigned int ssid_set:1;
258 unsigned int bssid_set:1;
259 unsigned int prev_bssid_set:1;
260 unsigned int authenticated:1;
261 unsigned int associated:1;
262 unsigned int probereq_poll:1;
263 unsigned int use_protection:1;
264 unsigned int create_ibss:1;
265 unsigned int mixed_cell:1;
266 unsigned int wmm_enabled:1;
267 unsigned int ht_enabled:1;
268 unsigned int auto_ssid_sel:1;
269 unsigned int auto_bssid_sel:1;
270 unsigned int auto_channel_sel:1;
271 #define IEEE80211_STA_REQ_SCAN 0
272 #define IEEE80211_STA_REQ_AUTH 1
273 #define IEEE80211_STA_REQ_RUN 2
274 unsigned long request;
275 struct sk_buff_head skb_queue;
278 unsigned long last_probe;
280 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
281 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
282 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
283 unsigned int auth_algs; /* bitfield of allowed auth algs */
284 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
285 int auth_transaction;
287 unsigned long ibss_join_req;
288 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
291 int wmm_last_param_set;
293 u32 dot11EDCAAveragingPeriod;
294 u32 MPDUExchangeTime;
295 #define STA_TSID_NUM 16
296 #define STA_TSDIR_NUM 2
297 /* EDCA: 0~7, HCCA: 8~15 */
298 struct sta_ts_data ts_data[STA_TSID_NUM][STA_TSDIR_NUM];
299 #ifdef CONFIG_MAC80211_DEBUGFS
300 struct ieee80211_elem_tspec tspec;
301 u8 dls_mac[ETH_ALEN];
306 struct ieee80211_sub_if_data {
307 struct list_head list;
310 struct wireless_dev wdev;
312 struct net_device *dev;
313 struct ieee80211_local *local;
316 unsigned int allmulti:1;
317 unsigned int promisc:1;
319 struct net_device_stats stats;
320 int drop_unencrypted;
321 int eapol; /* 0 = process EAPOL frames as normal data frames,
322 * 1 = send EAPOL frames through wlan#ap to hostapd
324 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
329 /* Fragment table for host-based reassembly */
330 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
331 unsigned int fragment_next;
333 #define NUM_DEFAULT_KEYS 4
334 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
335 struct ieee80211_key *default_key;
337 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
340 struct ieee80211_if_ap ap;
341 struct ieee80211_if_wds wds;
342 struct ieee80211_if_vlan vlan;
343 struct ieee80211_if_sta sta;
348 #ifdef CONFIG_MAC80211_DEBUGFS
349 struct dentry *debugfsdir;
352 struct dentry *channel_use;
353 struct dentry *drop_unencrypted;
354 struct dentry *eapol;
355 struct dentry *ieee8021_x;
356 struct dentry *state;
357 struct dentry *bssid;
358 struct dentry *prev_bssid;
359 struct dentry *ssid_len;
361 struct dentry *ap_capab;
362 struct dentry *capab;
363 struct dentry *extra_ie_len;
364 struct dentry *auth_tries;
365 struct dentry *assoc_tries;
366 struct dentry *auth_algs;
367 struct dentry *auth_alg;
368 struct dentry *auth_transaction;
369 struct dentry *flags;
370 struct dentry *qos_dir;
372 struct dentry *addts_11e;
373 struct dentry *addts_wmm;
374 struct dentry *delts_11e;
375 struct dentry *delts_wmm;
376 struct dentry *dls_mac;
377 struct dentry *dls_op;
379 struct dentry *tsinfo_dir;
382 struct dentry *direction;
385 struct dentry *tspec_dir;
387 struct dentry *nominal_msdu_size;
388 struct dentry *max_msdu_size;
389 struct dentry *min_service_interval;
390 struct dentry *max_service_interval;
391 struct dentry *inactivity_interval;
392 struct dentry *suspension_interval;
393 struct dentry *service_start_time;
394 struct dentry *min_data_rate;
395 struct dentry *mean_data_rate;
396 struct dentry *peak_data_rate;
397 struct dentry *burst_size;
398 struct dentry *delay_bound;
399 struct dentry *min_phy_rate;
400 struct dentry *surplus_band_allow;
401 struct dentry *medium_time;
405 struct dentry *channel_use;
406 struct dentry *drop_unencrypted;
407 struct dentry *eapol;
408 struct dentry *ieee8021_x;
409 struct dentry *num_sta_ps;
410 struct dentry *dtim_period;
411 struct dentry *dtim_count;
412 struct dentry *num_beacons;
413 struct dentry *force_unicast_rateidx;
414 struct dentry *max_ratectrl_rateidx;
415 struct dentry *num_buffered_multicast;
416 struct dentry *beacon_head_len;
417 struct dentry *beacon_tail_len;
420 struct dentry *channel_use;
421 struct dentry *drop_unencrypted;
422 struct dentry *eapol;
423 struct dentry *ieee8021_x;
427 struct dentry *channel_use;
428 struct dentry *drop_unencrypted;
429 struct dentry *eapol;
430 struct dentry *ieee8021_x;
431 struct dentry *vlan_id;
436 struct dentry *default_key;
441 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
444 IEEE80211_RX_MSG = 1,
445 IEEE80211_TX_STATUS_MSG = 2,
448 struct ieee80211_local {
449 /* embed the driver visible part.
450 * don't cast (use the static inlines below), but we keep
451 * it first anyway so they become a no-op */
452 struct ieee80211_hw hw;
454 const struct ieee80211_ops *ops;
456 /* List of registered struct ieee80211_hw_mode */
457 struct list_head modes_list;
459 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
460 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
463 struct iw_statistics wstats;
467 IEEE80211_DEV_UNINITIALIZED = 0,
468 IEEE80211_DEV_REGISTERED,
469 IEEE80211_DEV_UNREGISTERED,
472 /* Tasklet and skb queue to process calls from IRQ mode. All frames
473 * added to skb_queue will be processed, but frames in
474 * skb_queue_unreliable may be dropped if the total length of these
475 * queues increases over the limit. */
476 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
477 struct tasklet_struct tasklet;
478 struct sk_buff_head skb_queue;
479 struct sk_buff_head skb_queue_unreliable;
481 /* Station data structures */
482 spinlock_t sta_lock; /* mutex for STA data structures */
483 int num_sta; /* number of stations in sta_list */
484 struct list_head sta_list;
485 struct list_head deleted_sta_list;
486 struct sta_info *sta_hash[STA_HASH_SIZE];
487 struct timer_list sta_cleanup;
489 unsigned long state[NUM_TX_DATA_QUEUES];
490 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
491 struct tasklet_struct tx_pending_tasklet;
493 int mc_count; /* total count of multicast entries in all interfaces */
494 int iff_allmultis, iff_promiscs;
495 /* number of interfaces with corresponding IFF_ flags */
497 struct rate_control_ref *rate_ctrl;
499 int next_mode; /* MODE_IEEE80211*
500 * The mode preference for next channel change. This is
501 * used to select .11g vs. .11b channels (or 4.9 GHz vs.
502 * .11a) when the channel number is not unique. */
504 /* Supported and basic rate filters for different modes. These are
505 * pointers to -1 terminated lists and rates in 100 kbps units. */
506 int *supp_rates[NUM_IEEE80211_MODES];
507 int *basic_rates[NUM_IEEE80211_MODES];
510 int cts_protect_erp_frames;
511 int fragmentation_threshold;
512 int short_retry_limit; /* dot11ShortRetryLimit */
513 int long_retry_limit; /* dot11LongRetryLimit */
514 int short_preamble; /* use short preamble with IEEE 802.11b */
516 struct crypto_blkcipher *wep_tx_tfm;
517 struct crypto_blkcipher *wep_rx_tfm;
519 int key_tx_rx_threshold; /* number of times any key can be used in TX
520 * or RX before generating a rekey
521 * notification; 0 = notification disabled. */
523 int bridge_packets; /* bridge packets between associated stations and
524 * deliver multicast frames both back to wireless
525 * media and to the local net stack */
527 ieee80211_rx_handler *rx_pre_handlers;
528 ieee80211_rx_handler *rx_handlers;
529 ieee80211_tx_handler *tx_handlers;
531 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
532 * sta_bss_lock or sta_lock. */
533 struct list_head sub_if_list;
535 int scan_channel_idx;
536 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
537 unsigned long last_scan_completed;
538 struct delayed_work scan_work;
539 struct net_device *scan_dev;
540 struct ieee80211_channel *oper_channel, *scan_channel;
541 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
542 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
543 size_t scan_ssid_len;
544 struct list_head sta_bss_list;
545 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
546 spinlock_t sta_bss_lock;
547 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
548 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
549 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
552 #ifdef CONFIG_HOSTAPD_WPA_TESTING
554 #endif /* CONFIG_HOSTAPD_WPA_TESTING */
556 /* dot11CountersTable */
557 u32 dot11TransmittedFragmentCount;
558 u32 dot11MulticastTransmittedFrameCount;
559 u32 dot11FailedCount;
561 u32 dot11MultipleRetryCount;
562 u32 dot11FrameDuplicateCount;
563 u32 dot11ReceivedFragmentCount;
564 u32 dot11MulticastReceivedFrameCount;
565 u32 dot11TransmittedFrameCount;
566 u32 dot11WEPUndecryptableCount;
568 #ifdef CONFIG_MAC80211_LEDS
569 int tx_led_counter, rx_led_counter;
570 struct led_trigger *tx_led, *rx_led;
571 char tx_led_name[32], rx_led_name[32];
577 struct timer_list stat_timer;
579 #ifdef CONFIG_MAC80211_DEBUGFS
580 struct work_struct sta_debugfs_add;
584 STA_ANTENNA_SEL_AUTO = 0,
585 STA_ANTENNA_SEL_SW_CTRL = 1,
586 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
589 int rate_ctrl_num_up, rate_ctrl_num_down;
591 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
592 /* TX/RX handler statistics */
593 unsigned int tx_handlers_drop;
594 unsigned int tx_handlers_queued;
595 unsigned int tx_handlers_drop_unencrypted;
596 unsigned int tx_handlers_drop_fragment;
597 unsigned int tx_handlers_drop_wep;
598 unsigned int tx_handlers_drop_not_assoc;
599 unsigned int tx_handlers_drop_unauth_port;
600 unsigned int rx_handlers_drop;
601 unsigned int rx_handlers_queued;
602 unsigned int rx_handlers_drop_nullfunc;
603 unsigned int rx_handlers_drop_defrag;
604 unsigned int rx_handlers_drop_short;
605 unsigned int rx_handlers_drop_passive_scan;
606 unsigned int tx_expand_skb_head;
607 unsigned int tx_expand_skb_head_cloned;
608 unsigned int rx_expand_skb_head;
609 unsigned int rx_expand_skb_head2;
610 unsigned int rx_handlers_fragments;
611 unsigned int tx_status_drop;
612 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
613 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
614 #define I802_DEBUG_INC(c) (c)++
615 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
616 #define I802_DEBUG_INC(c) do { } while (0)
617 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
620 int default_wep_only; /* only default WEP keys are used with this
621 * interface; this is used to decide when hwaccel
622 * can be used with default keys */
623 int total_ps_buffered; /* total number of all buffered unicast and
624 * multicast packets for power saving stations
626 int allow_broadcast_always; /* whether to allow TX of broadcast frames
627 * even when there are no associated STAs
630 int wifi_wme_noack_test;
631 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
633 unsigned int enabled_modes; /* bitfield of allowed modes;
635 unsigned int hw_modes; /* bitfield of supported hardware modes;
640 #ifdef CONFIG_MAC80211_DEBUGFS
641 struct local_debugfsdentries {
642 struct dentry *channel;
643 struct dentry *frequency;
644 struct dentry *radar_detect;
645 struct dentry *antenna_sel_tx;
646 struct dentry *antenna_sel_rx;
647 struct dentry *bridge_packets;
648 struct dentry *key_tx_rx_threshold;
649 struct dentry *rts_threshold;
650 struct dentry *fragmentation_threshold;
651 struct dentry *short_retry_limit;
652 struct dentry *long_retry_limit;
653 struct dentry *total_ps_buffered;
655 struct dentry *wep_iv;
656 struct dentry *rate_ctrl_alg;
657 struct dentry *tx_power_reduction;
658 struct dentry *modes;
659 struct dentry *statistics;
660 struct local_debugfsdentries_statsdentries {
661 struct dentry *transmitted_fragment_count;
662 struct dentry *multicast_transmitted_frame_count;
663 struct dentry *failed_count;
664 struct dentry *retry_count;
665 struct dentry *multiple_retry_count;
666 struct dentry *frame_duplicate_count;
667 struct dentry *received_fragment_count;
668 struct dentry *multicast_received_frame_count;
669 struct dentry *transmitted_frame_count;
670 struct dentry *wep_undecryptable_count;
671 struct dentry *num_scans;
672 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
673 struct dentry *tx_handlers_drop;
674 struct dentry *tx_handlers_queued;
675 struct dentry *tx_handlers_drop_unencrypted;
676 struct dentry *tx_handlers_drop_fragment;
677 struct dentry *tx_handlers_drop_wep;
678 struct dentry *tx_handlers_drop_not_assoc;
679 struct dentry *tx_handlers_drop_unauth_port;
680 struct dentry *rx_handlers_drop;
681 struct dentry *rx_handlers_queued;
682 struct dentry *rx_handlers_drop_nullfunc;
683 struct dentry *rx_handlers_drop_defrag;
684 struct dentry *rx_handlers_drop_short;
685 struct dentry *rx_handlers_drop_passive_scan;
686 struct dentry *tx_expand_skb_head;
687 struct dentry *tx_expand_skb_head_cloned;
688 struct dentry *rx_expand_skb_head;
689 struct dentry *rx_expand_skb_head2;
690 struct dentry *rx_handlers_fragments;
691 struct dentry *tx_status_drop;
692 struct dentry *wme_tx_queue;
693 struct dentry *wme_rx_queue;
695 struct dentry *dot11ACKFailureCount;
696 struct dentry *dot11RTSFailureCount;
697 struct dentry *dot11FCSErrorCount;
698 struct dentry *dot11RTSSuccessCount;
700 struct dentry *stations;
706 enum sta_link_direction {
711 static inline struct ieee80211_local *hw_to_local(
712 struct ieee80211_hw *hw)
714 return container_of(hw, struct ieee80211_local, hw);
717 static inline struct ieee80211_hw *local_to_hw(
718 struct ieee80211_local *local)
723 enum ieee80211_link_state_t {
724 IEEE80211_LINK_STATE_XOFF = 0,
725 IEEE80211_LINK_STATE_PENDING,
728 struct sta_attribute {
729 struct attribute attr;
730 ssize_t (*show)(const struct sta_info *, char *buf);
731 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
734 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
737 * This format has ben mandated by the IEEE specifications,
738 * so this line may not be changed to use the __set_bit() format.
740 bss->tim[(aid)/8] |= 1<<((aid) % 8);
743 static inline void bss_tim_set(struct ieee80211_local *local,
744 struct ieee80211_if_ap *bss, int aid)
746 spin_lock_bh(&local->sta_lock);
747 __bss_tim_set(bss, aid);
748 spin_unlock_bh(&local->sta_lock);
751 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
754 * This format has ben mandated by the IEEE specifications,
755 * so this line may not be changed to use the __clear_bit() format.
757 bss->tim[(aid)/8] &= !(1<<((aid) % 8));
760 static inline void bss_tim_clear(struct ieee80211_local *local,
761 struct ieee80211_if_ap *bss, int aid)
763 spin_lock_bh(&local->sta_lock);
764 __bss_tim_clear(bss, aid);
765 spin_unlock_bh(&local->sta_lock);
769 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
770 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
771 * @rate: Transmission rate to check, in 100 kbps
773 * Check if a given rate is an Extended Rate PHY (ERP) rate.
775 static inline int ieee80211_is_erp_rate(int phymode, int rate)
777 if (phymode == MODE_IEEE80211G) {
778 if (rate != 10 && rate != 20 &&
779 rate != 55 && rate != 110)
786 int ieee80211_hw_config(struct ieee80211_local *local);
787 int ieee80211_if_config(struct net_device *dev);
788 int ieee80211_if_config_beacon(struct net_device *dev);
789 struct ieee80211_key_conf *
790 ieee80211_key_data2conf(struct ieee80211_local *local,
791 const struct ieee80211_key *data);
792 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
793 int idx, size_t key_len, gfp_t flags);
794 void ieee80211_key_free(struct ieee80211_key *key);
795 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
796 struct ieee80211_rx_status *status, u32 msg_type);
797 void ieee80211_prepare_rates(struct ieee80211_local *local,
798 struct ieee80211_hw_mode *mode);
799 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
800 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
801 void ieee80211_if_setup(struct net_device *dev);
802 void ieee80211_if_mgmt_setup(struct net_device *dev);
803 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
805 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
807 /* ieee80211_ioctl.c */
808 int ieee80211_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
809 extern const struct iw_handler_def ieee80211_iw_handler_def;
811 /* Set hw encryption from ieee80211 */
812 int ieee80211_set_hw_encryption(struct net_device *dev,
813 struct sta_info *sta, u8 addr[ETH_ALEN],
814 struct ieee80211_key *key);
815 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
818 /* Least common multiple of the used rates (in 100 kbps). This is used to
819 * calculate rate_inv values for each rate so that only integers are needed. */
820 #define CHAN_UTIL_RATE_LCM 95040
821 /* 1 usec is 1/8 * (95040/10) = 1188 */
822 #define CHAN_UTIL_PER_USEC 1188
823 /* Amount of bits to shift the result right to scale the total utilization
824 * to values that will not wrap around 32-bit integers. */
825 #define CHAN_UTIL_SHIFT 9
826 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
827 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
828 * raw value with about 23 should give utilization in 10th of a percentage
829 * (1/1000). However, utilization is only estimated and not all intervals
830 * between frames etc. are calculated. 18 seems to give numbers that are closer
831 * to the real maximum. */
832 #define CHAN_UTIL_PER_10MS 18
833 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
834 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
837 /* ieee80211_ioctl.c */
838 int ieee80211_set_compression(struct ieee80211_local *local,
839 struct net_device *dev, struct sta_info *sta);
840 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
841 /* ieee80211_sta.c */
842 void ieee80211_sta_timer(unsigned long data);
843 void ieee80211_sta_work(struct work_struct *work);
844 void ieee80211_admit_refresh(unsigned long ptr);
845 void ieee80211_sta_scan_work(struct work_struct *work);
846 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
847 struct ieee80211_rx_status *rx_status);
848 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
849 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
850 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
851 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
852 void ieee80211_sta_req_auth(struct net_device *dev,
853 struct ieee80211_if_sta *ifsta);
854 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
855 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
856 struct ieee80211_rx_status *rx_status);
857 void ieee80211_rx_bss_list_init(struct net_device *dev);
858 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
859 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
860 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
861 struct sk_buff *skb, u8 *bssid,
863 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
864 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
865 void ieee80211_send_addts(struct net_device *dev,
866 struct ieee80211_if_sta *ifsta,
867 struct ieee80211_elem_tspec *tspec);
868 void wmm_send_addts(struct net_device *dev,
869 struct ieee80211_if_sta *ifsta,
870 struct ieee80211_elem_tspec *tspec);
871 void ieee80211_send_delts(struct net_device *dev,
872 struct ieee80211_if_sta *ifsta,
873 struct ieee80211_elem_tspec *tp);
874 void wmm_send_delts(struct net_device *dev,
875 struct ieee80211_if_sta *ifsta,
876 struct ieee80211_elem_tspec *tp);
877 void ieee80211_send_dls_req(struct net_device *dev,
878 struct ieee80211_if_sta *ifsta,
879 u8 *addr, u16 timeout);
880 void ieee80211_send_dls_teardown(struct net_device *dev,
881 struct ieee80211_if_sta *ifsta,
882 u8 *mac, u16 reason);
883 struct sta_info *dls_info_get(struct ieee80211_local *local, u8 *addr);
884 void dls_info_add(struct ieee80211_if_sta *ifsta, struct sta_info *dls);
885 void dls_info_stop(struct ieee80211_if_sta *ifsta);
886 int dls_link_status(struct ieee80211_local *local, u8 *addr);
888 /* ieee80211_iface.c */
889 int ieee80211_if_add(struct net_device *dev, const char *name,
890 struct net_device **new_dev, int type);
891 void ieee80211_if_set_type(struct net_device *dev, int type);
892 void ieee80211_if_reinit(struct net_device *dev);
893 void __ieee80211_if_del(struct ieee80211_local *local,
894 struct ieee80211_sub_if_data *sdata);
895 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
896 void ieee80211_if_free(struct net_device *dev);
897 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
898 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
899 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
902 void ieee80211_regdomain_init(void);
903 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode);
905 /* for wiphy privid */
906 extern void *mac80211_wiphy_privid;
908 #endif /* IEEE80211_I_H */