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 struct ieee80211_fragment_entry {
63 unsigned long first_frag_time;
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 */
74 struct ieee80211_sta_bss {
75 struct list_head list;
76 struct ieee80211_sta_bss *hnext;
80 u8 ssid[IEEE80211_MAX_SSID_LEN];
82 u16 capability; /* host byte order */
86 int rssi, signal, noise;
93 #define IEEE80211_MAX_SUPP_RATES 32
94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
95 size_t supp_rates_len;
100 unsigned long last_update;
106 TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
107 } ieee80211_txrx_result;
109 struct ieee80211_txrx_data {
111 struct net_device *dev;
112 struct ieee80211_local *local;
113 struct ieee80211_sub_if_data *sdata;
114 struct sta_info *sta;
116 struct ieee80211_key *key;
117 unsigned int fragmented:1; /* whether the MSDU was fragmented */
120 struct ieee80211_tx_control *control;
121 unsigned int unicast:1;
122 unsigned int ps_buffered:1;
123 unsigned int short_preamble:1;
124 unsigned int probe_last_frag:1;
125 struct ieee80211_hw_mode *mode;
126 struct ieee80211_rate *rate;
127 /* use this rate (if set) for last fragment; rate can
128 * be set to lower rate for the first fragments, e.g.,
129 * when using CTS protection with IEEE 802.11g. */
130 struct ieee80211_rate *last_frag_rate;
131 int last_frag_hwrate;
134 /* Extra fragments (in addition to the first fragment
137 struct sk_buff **extra_frag;
140 struct ieee80211_rx_status *status;
141 int sent_ps_buffered;
144 unsigned int in_scan:1;
145 /* frame is destined to interface currently processed
146 * (including multicast frames) */
147 unsigned int ra_match:1;
152 /* Stored in sk_buff->cb */
153 struct ieee80211_tx_packet_data {
155 unsigned long jiffies;
156 unsigned int req_tx_status:1;
157 unsigned int do_not_encrypt:1;
158 unsigned int requeue:1;
159 unsigned int mgmt_iface:1;
160 unsigned int queue:4;
163 struct ieee80211_tx_stored_packet {
164 struct ieee80211_tx_control control;
167 struct sk_buff **extra_frag;
168 int last_frag_rateidx;
169 int last_frag_hwrate;
170 struct ieee80211_rate *last_frag_rate;
171 unsigned int last_frag_rate_ctrl_probe:1;
174 typedef ieee80211_txrx_result (*ieee80211_tx_handler)
175 (struct ieee80211_txrx_data *tx);
177 typedef ieee80211_txrx_result (*ieee80211_rx_handler)
178 (struct ieee80211_txrx_data *rx);
180 struct ieee80211_if_ap {
181 u8 *beacon_head, *beacon_tail;
182 int beacon_head_len, beacon_tail_len;
184 u8 ssid[IEEE80211_MAX_SSID_LEN];
187 size_t generic_elem_len;
189 /* yes, this looks ugly, but guarantees that we can later use
191 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
192 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
193 atomic_t num_sta_ps; /* number of stations in PS mode */
194 struct sk_buff_head ps_bc_buf;
195 int dtim_period, dtim_count;
196 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
197 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
198 int num_beacons; /* number of TXed beacon frames for this BSS */
201 struct ieee80211_if_wds {
202 u8 remote_addr[ETH_ALEN];
203 struct sta_info *sta;
206 struct ieee80211_if_vlan {
210 struct ieee80211_if_sta {
212 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
213 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
214 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
216 struct timer_list timer;
217 struct work_struct work;
218 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
219 u8 ssid[IEEE80211_MAX_SSID_LEN];
223 u8 *extra_ie; /* to be added to the end of AssocReq */
226 /* The last AssocReq/Resp IEs */
227 u8 *assocreq_ies, *assocresp_ies;
228 size_t assocreq_ies_len, assocresp_ies_len;
230 int auth_tries, assoc_tries;
232 unsigned int ssid_set:1;
233 unsigned int bssid_set:1;
234 unsigned int prev_bssid_set:1;
235 unsigned int authenticated:1;
236 unsigned int associated:1;
237 unsigned int probereq_poll:1;
238 unsigned int use_protection:1;
239 unsigned int create_ibss:1;
240 unsigned int mixed_cell:1;
241 unsigned int wmm_enabled:1;
242 unsigned int auto_ssid_sel:1;
243 unsigned int auto_bssid_sel:1;
244 unsigned int auto_channel_sel:1;
245 #define IEEE80211_STA_REQ_SCAN 0
246 #define IEEE80211_STA_REQ_AUTH 1
247 #define IEEE80211_STA_REQ_RUN 2
248 unsigned long request;
249 struct sk_buff_head skb_queue;
252 unsigned long last_probe;
254 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
255 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
256 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
257 unsigned int auth_algs; /* bitfield of allowed auth algs */
258 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
259 int auth_transaction;
261 unsigned long ibss_join_req;
262 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
265 int wmm_last_param_set;
269 struct ieee80211_sub_if_data {
270 struct list_head list;
273 struct wireless_dev wdev;
275 struct net_device *dev;
276 struct ieee80211_local *local;
279 unsigned int allmulti:1;
280 unsigned int promisc:1;
282 struct net_device_stats stats;
283 int drop_unencrypted;
284 int eapol; /* 0 = process EAPOL frames as normal data frames,
285 * 1 = send EAPOL frames through wlan#ap to hostapd
287 int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
292 /* Fragment table for host-based reassembly */
293 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
294 unsigned int fragment_next;
296 #define NUM_DEFAULT_KEYS 4
297 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
298 struct ieee80211_key *default_key;
300 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
303 struct ieee80211_if_ap ap;
304 struct ieee80211_if_wds wds;
305 struct ieee80211_if_vlan vlan;
306 struct ieee80211_if_sta sta;
311 #ifdef CONFIG_MAC80211_DEBUGFS
312 struct dentry *debugfsdir;
315 struct dentry *channel_use;
316 struct dentry *drop_unencrypted;
317 struct dentry *eapol;
318 struct dentry *ieee8021_x;
319 struct dentry *state;
320 struct dentry *bssid;
321 struct dentry *prev_bssid;
322 struct dentry *ssid_len;
324 struct dentry *ap_capab;
325 struct dentry *capab;
326 struct dentry *extra_ie_len;
327 struct dentry *auth_tries;
328 struct dentry *assoc_tries;
329 struct dentry *auth_algs;
330 struct dentry *auth_alg;
331 struct dentry *auth_transaction;
332 struct dentry *flags;
335 struct dentry *channel_use;
336 struct dentry *drop_unencrypted;
337 struct dentry *eapol;
338 struct dentry *ieee8021_x;
339 struct dentry *num_sta_ps;
340 struct dentry *dtim_period;
341 struct dentry *dtim_count;
342 struct dentry *num_beacons;
343 struct dentry *force_unicast_rateidx;
344 struct dentry *max_ratectrl_rateidx;
345 struct dentry *num_buffered_multicast;
346 struct dentry *beacon_head_len;
347 struct dentry *beacon_tail_len;
350 struct dentry *channel_use;
351 struct dentry *drop_unencrypted;
352 struct dentry *eapol;
353 struct dentry *ieee8021_x;
357 struct dentry *channel_use;
358 struct dentry *drop_unencrypted;
359 struct dentry *eapol;
360 struct dentry *ieee8021_x;
361 struct dentry *vlan_id;
366 struct dentry *default_key;
371 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
374 IEEE80211_RX_MSG = 1,
375 IEEE80211_TX_STATUS_MSG = 2,
378 struct ieee80211_local {
379 /* embed the driver visible part.
380 * don't cast (use the static inlines below), but we keep
381 * it first anyway so they become a no-op */
382 struct ieee80211_hw hw;
384 const struct ieee80211_ops *ops;
386 /* List of registered struct ieee80211_hw_mode */
387 struct list_head modes_list;
389 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
390 struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
393 struct iw_statistics wstats;
397 IEEE80211_DEV_UNINITIALIZED = 0,
398 IEEE80211_DEV_REGISTERED,
399 IEEE80211_DEV_UNREGISTERED,
402 /* Tasklet and skb queue to process calls from IRQ mode. All frames
403 * added to skb_queue will be processed, but frames in
404 * skb_queue_unreliable may be dropped if the total length of these
405 * queues increases over the limit. */
406 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
407 struct tasklet_struct tasklet;
408 struct sk_buff_head skb_queue;
409 struct sk_buff_head skb_queue_unreliable;
411 /* Station data structures */
412 spinlock_t sta_lock; /* mutex for STA data structures */
413 int num_sta; /* number of stations in sta_list */
414 struct list_head sta_list;
415 struct list_head deleted_sta_list;
416 struct sta_info *sta_hash[STA_HASH_SIZE];
417 struct timer_list sta_cleanup;
419 unsigned long state[NUM_TX_DATA_QUEUES];
420 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
421 struct tasklet_struct tx_pending_tasklet;
423 int mc_count; /* total count of multicast entries in all interfaces */
424 int iff_allmultis, iff_promiscs;
425 /* number of interfaces with corresponding IFF_ flags */
427 struct rate_control_ref *rate_ctrl;
429 int next_mode; /* MODE_IEEE80211*
430 * The mode preference for next channel change. This is
431 * used to select .11g vs. .11b channels (or 4.9 GHz vs.
432 * .11a) when the channel number is not unique. */
434 /* Supported and basic rate filters for different modes. These are
435 * pointers to -1 terminated lists and rates in 100 kbps units. */
436 int *supp_rates[NUM_IEEE80211_MODES];
437 int *basic_rates[NUM_IEEE80211_MODES];
440 int cts_protect_erp_frames;
441 int fragmentation_threshold;
442 int short_retry_limit; /* dot11ShortRetryLimit */
443 int long_retry_limit; /* dot11LongRetryLimit */
444 int short_preamble; /* use short preamble with IEEE 802.11b */
446 struct crypto_blkcipher *wep_tx_tfm;
447 struct crypto_blkcipher *wep_rx_tfm;
449 int key_tx_rx_threshold; /* number of times any key can be used in TX
450 * or RX before generating a rekey
451 * notification; 0 = notification disabled. */
453 int bridge_packets; /* bridge packets between associated stations and
454 * deliver multicast frames both back to wireless
455 * media and to the local net stack */
457 ieee80211_rx_handler *rx_pre_handlers;
458 ieee80211_rx_handler *rx_handlers;
459 ieee80211_tx_handler *tx_handlers;
461 rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
462 * sta_bss_lock or sta_lock. */
463 struct list_head sub_if_list;
465 int scan_channel_idx;
466 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
467 unsigned long last_scan_completed;
468 struct delayed_work scan_work;
469 struct net_device *scan_dev;
470 struct ieee80211_channel *oper_channel, *scan_channel;
471 struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
472 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
473 size_t scan_ssid_len;
474 struct list_head sta_bss_list;
475 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
476 spinlock_t sta_bss_lock;
477 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
478 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
479 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
483 /* dot11CountersTable */
484 u32 dot11TransmittedFragmentCount;
485 u32 dot11MulticastTransmittedFrameCount;
486 u32 dot11FailedCount;
488 u32 dot11MultipleRetryCount;
489 u32 dot11FrameDuplicateCount;
490 u32 dot11ReceivedFragmentCount;
491 u32 dot11MulticastReceivedFrameCount;
492 u32 dot11TransmittedFrameCount;
493 u32 dot11WEPUndecryptableCount;
495 #ifdef CONFIG_MAC80211_LEDS
496 int tx_led_counter, rx_led_counter;
497 struct led_trigger *tx_led, *rx_led;
498 char tx_led_name[32], rx_led_name[32];
504 struct timer_list stat_timer;
506 #ifdef CONFIG_MAC80211_DEBUGFS
507 struct work_struct sta_debugfs_add;
511 STA_ANTENNA_SEL_AUTO = 0,
512 STA_ANTENNA_SEL_SW_CTRL = 1,
513 STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
516 int rate_ctrl_num_up, rate_ctrl_num_down;
518 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
519 /* TX/RX handler statistics */
520 unsigned int tx_handlers_drop;
521 unsigned int tx_handlers_queued;
522 unsigned int tx_handlers_drop_unencrypted;
523 unsigned int tx_handlers_drop_fragment;
524 unsigned int tx_handlers_drop_wep;
525 unsigned int tx_handlers_drop_not_assoc;
526 unsigned int tx_handlers_drop_unauth_port;
527 unsigned int rx_handlers_drop;
528 unsigned int rx_handlers_queued;
529 unsigned int rx_handlers_drop_nullfunc;
530 unsigned int rx_handlers_drop_defrag;
531 unsigned int rx_handlers_drop_short;
532 unsigned int rx_handlers_drop_passive_scan;
533 unsigned int tx_expand_skb_head;
534 unsigned int tx_expand_skb_head_cloned;
535 unsigned int rx_expand_skb_head;
536 unsigned int rx_expand_skb_head2;
537 unsigned int rx_handlers_fragments;
538 unsigned int tx_status_drop;
539 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
540 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
541 #define I802_DEBUG_INC(c) (c)++
542 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
543 #define I802_DEBUG_INC(c) do { } while (0)
544 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
547 int default_wep_only; /* only default WEP keys are used with this
548 * interface; this is used to decide when hwaccel
549 * can be used with default keys */
550 int total_ps_buffered; /* total number of all buffered unicast and
551 * multicast packets for power saving stations
553 int allow_broadcast_always; /* whether to allow TX of broadcast frames
554 * even when there are no associated STAs
557 int wifi_wme_noack_test;
558 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
560 unsigned int enabled_modes; /* bitfield of allowed modes;
562 unsigned int hw_modes; /* bitfield of supported hardware modes;
567 #ifdef CONFIG_MAC80211_DEBUGFS
568 struct local_debugfsdentries {
569 struct dentry *channel;
570 struct dentry *frequency;
571 struct dentry *radar_detect;
572 struct dentry *antenna_sel_tx;
573 struct dentry *antenna_sel_rx;
574 struct dentry *bridge_packets;
575 struct dentry *key_tx_rx_threshold;
576 struct dentry *rts_threshold;
577 struct dentry *fragmentation_threshold;
578 struct dentry *short_retry_limit;
579 struct dentry *long_retry_limit;
580 struct dentry *total_ps_buffered;
582 struct dentry *wep_iv;
583 struct dentry *tx_power_reduction;
584 struct dentry *modes;
585 struct dentry *statistics;
586 struct local_debugfsdentries_statsdentries {
587 struct dentry *transmitted_fragment_count;
588 struct dentry *multicast_transmitted_frame_count;
589 struct dentry *failed_count;
590 struct dentry *retry_count;
591 struct dentry *multiple_retry_count;
592 struct dentry *frame_duplicate_count;
593 struct dentry *received_fragment_count;
594 struct dentry *multicast_received_frame_count;
595 struct dentry *transmitted_frame_count;
596 struct dentry *wep_undecryptable_count;
597 struct dentry *num_scans;
598 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
599 struct dentry *tx_handlers_drop;
600 struct dentry *tx_handlers_queued;
601 struct dentry *tx_handlers_drop_unencrypted;
602 struct dentry *tx_handlers_drop_fragment;
603 struct dentry *tx_handlers_drop_wep;
604 struct dentry *tx_handlers_drop_not_assoc;
605 struct dentry *tx_handlers_drop_unauth_port;
606 struct dentry *rx_handlers_drop;
607 struct dentry *rx_handlers_queued;
608 struct dentry *rx_handlers_drop_nullfunc;
609 struct dentry *rx_handlers_drop_defrag;
610 struct dentry *rx_handlers_drop_short;
611 struct dentry *rx_handlers_drop_passive_scan;
612 struct dentry *tx_expand_skb_head;
613 struct dentry *tx_expand_skb_head_cloned;
614 struct dentry *rx_expand_skb_head;
615 struct dentry *rx_expand_skb_head2;
616 struct dentry *rx_handlers_fragments;
617 struct dentry *tx_status_drop;
618 struct dentry *wme_tx_queue;
619 struct dentry *wme_rx_queue;
621 struct dentry *dot11ACKFailureCount;
622 struct dentry *dot11RTSFailureCount;
623 struct dentry *dot11FCSErrorCount;
624 struct dentry *dot11RTSSuccessCount;
626 struct dentry *stations;
632 static inline struct ieee80211_local *hw_to_local(
633 struct ieee80211_hw *hw)
635 return container_of(hw, struct ieee80211_local, hw);
638 static inline struct ieee80211_hw *local_to_hw(
639 struct ieee80211_local *local)
644 enum ieee80211_link_state_t {
645 IEEE80211_LINK_STATE_XOFF = 0,
646 IEEE80211_LINK_STATE_PENDING,
649 struct sta_attribute {
650 struct attribute attr;
651 ssize_t (*show)(const struct sta_info *, char *buf);
652 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
655 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
658 * This format has ben mandated by the IEEE specifications,
659 * so this line may not be changed to use the __set_bit() format.
661 bss->tim[(aid)/8] |= 1<<((aid) % 8);
664 static inline void bss_tim_set(struct ieee80211_local *local,
665 struct ieee80211_if_ap *bss, int aid)
667 spin_lock_bh(&local->sta_lock);
668 __bss_tim_set(bss, aid);
669 spin_unlock_bh(&local->sta_lock);
672 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
675 * This format has ben mandated by the IEEE specifications,
676 * so this line may not be changed to use the __clear_bit() format.
678 bss->tim[(aid)/8] &= !(1<<((aid) % 8));
681 static inline void bss_tim_clear(struct ieee80211_local *local,
682 struct ieee80211_if_ap *bss, int aid)
684 spin_lock_bh(&local->sta_lock);
685 __bss_tim_clear(bss, aid);
686 spin_unlock_bh(&local->sta_lock);
690 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
691 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
692 * @rate: Transmission rate to check, in 100 kbps
694 * Check if a given rate is an Extended Rate PHY (ERP) rate.
696 static inline int ieee80211_is_erp_rate(int phymode, int rate)
698 if (phymode == MODE_IEEE80211G) {
699 if (rate != 10 && rate != 20 &&
700 rate != 55 && rate != 110)
707 int ieee80211_hw_config(struct ieee80211_local *local);
708 int ieee80211_if_config(struct net_device *dev);
709 int ieee80211_if_config_beacon(struct net_device *dev);
710 struct ieee80211_key_conf *
711 ieee80211_key_data2conf(struct ieee80211_local *local,
712 const struct ieee80211_key *data);
713 struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
714 int idx, size_t key_len, gfp_t flags);
715 void ieee80211_key_free(struct ieee80211_key *key);
716 void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
717 struct ieee80211_rx_status *status, u32 msg_type);
718 void ieee80211_prepare_rates(struct ieee80211_local *local,
719 struct ieee80211_hw_mode *mode);
720 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
721 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
722 void ieee80211_if_setup(struct net_device *dev);
723 void ieee80211_if_mgmt_setup(struct net_device *dev);
724 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
726 struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);
728 /* ieee80211_ioctl.c */
729 extern const struct iw_handler_def ieee80211_iw_handler_def;
731 void ieee80211_update_default_wep_only(struct ieee80211_local *local);
734 /* Least common multiple of the used rates (in 100 kbps). This is used to
735 * calculate rate_inv values for each rate so that only integers are needed. */
736 #define CHAN_UTIL_RATE_LCM 95040
737 /* 1 usec is 1/8 * (95040/10) = 1188 */
738 #define CHAN_UTIL_PER_USEC 1188
739 /* Amount of bits to shift the result right to scale the total utilization
740 * to values that will not wrap around 32-bit integers. */
741 #define CHAN_UTIL_SHIFT 9
742 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
743 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
744 * raw value with about 23 should give utilization in 10th of a percentage
745 * (1/1000). However, utilization is only estimated and not all intervals
746 * between frames etc. are calculated. 18 seems to give numbers that are closer
747 * to the real maximum. */
748 #define CHAN_UTIL_PER_10MS 18
749 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
750 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
753 /* ieee80211_ioctl.c */
754 int ieee80211_set_compression(struct ieee80211_local *local,
755 struct net_device *dev, struct sta_info *sta);
756 int ieee80211_init_client(struct net_device *dev);
757 int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
758 /* ieee80211_sta.c */
759 void ieee80211_sta_timer(unsigned long data);
760 void ieee80211_sta_work(struct work_struct *work);
761 void ieee80211_sta_scan_work(struct work_struct *work);
762 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
763 struct ieee80211_rx_status *rx_status);
764 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
765 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
766 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
767 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
768 void ieee80211_sta_req_auth(struct net_device *dev,
769 struct ieee80211_if_sta *ifsta);
770 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
771 void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
772 struct ieee80211_rx_status *rx_status);
773 void ieee80211_rx_bss_list_init(struct net_device *dev);
774 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
775 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
776 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
777 struct sk_buff *skb, u8 *bssid,
779 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
780 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
782 /* ieee80211_iface.c */
783 int ieee80211_if_add(struct net_device *dev, const char *name,
784 struct net_device **new_dev, int type);
785 void ieee80211_if_set_type(struct net_device *dev, int type);
786 void ieee80211_if_reinit(struct net_device *dev);
787 void __ieee80211_if_del(struct ieee80211_local *local,
788 struct ieee80211_sub_if_data *sdata);
789 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
790 void ieee80211_if_free(struct net_device *dev);
791 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
792 int ieee80211_if_add_mgmt(struct ieee80211_local *local);
793 void ieee80211_if_del_mgmt(struct ieee80211_local *local);
795 /* for wiphy privid */
796 extern void *mac80211_wiphy_privid;
798 #endif /* IEEE80211_I_H */