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 <linux/etherdevice.h>
25 #include <net/wireless.h>
26 #include "ieee80211_key.h"
29 /* ieee80211.o internal definitions, etc. These are not included into
30 * low-level drivers. */
33 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
34 #endif /* ETH_P_PAE */
36 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
38 struct ieee80211_local;
40 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
42 /* Maximum number of broadcast/multicast frames to buffer when some of the
43 * associated stations are using power saving. */
44 #define AP_MAX_BC_BUFFER 128
46 /* Maximum number of frames buffered to all STAs, including multicast frames.
47 * Note: increasing this limit increases the potential memory requirement. Each
48 * frame can be up to about 2 kB long. */
49 #define TOTAL_MAX_TX_BUFFER 512
51 /* Required encryption head and tailroom */
52 #define IEEE80211_ENCRYPT_HEADROOM 8
53 #define IEEE80211_ENCRYPT_TAILROOM 12
55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
56 * reception of at least three fragmented frames. This limit can be increased
57 * by changing this define, at the cost of slower frame reassembly and
58 * increased memory use (about 2 kB of RAM per entry). */
59 #define IEEE80211_FRAGMENT_MAX 4
61 struct ieee80211_fragment_entry {
62 unsigned long first_frag_time;
64 unsigned int rx_queue;
65 unsigned int last_frag;
66 unsigned int extra_len;
67 struct sk_buff_head skb_list;
68 int ccmp; /* Whether fragments were encrypted with CCMP */
69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
73 struct ieee80211_sta_bss {
74 struct list_head list;
75 struct ieee80211_sta_bss *hnext;
79 u8 ssid[IEEE80211_MAX_SSID_LEN];
81 u16 capability; /* host byte order */
82 enum ieee80211_band band;
84 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;
102 /* during assocation, we save an ERP value from a probe response so
103 * that we can feed ERP info to the driver when handling the
104 * association completes. these fields probably won't be up-to-date
105 * otherwise, you probably don't want to use them. */
111 typedef unsigned __bitwise__ ieee80211_tx_result;
112 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
113 #define TX_DROP ((__force ieee80211_tx_result) 1u)
114 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
116 typedef unsigned __bitwise__ ieee80211_rx_result;
117 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
118 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
119 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
120 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
123 /* flags used in struct ieee80211_txrx_data.flags */
124 /* whether the MSDU was fragmented */
125 #define IEEE80211_TXRXD_FRAGMENTED BIT(0)
126 #define IEEE80211_TXRXD_TXUNICAST BIT(1)
127 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
128 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
129 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
130 /* frame is destined to interface currently processed (incl. multicast frames) */
131 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
132 #define IEEE80211_TXRXD_TX_INJECTED BIT(6)
133 #define IEEE80211_TXRXD_RX_AMSDU BIT(7)
134 struct ieee80211_txrx_data {
136 struct net_device *dev;
137 struct ieee80211_local *local;
138 struct ieee80211_sub_if_data *sdata;
139 struct sta_info *sta;
141 struct ieee80211_key *key;
145 struct ieee80211_tx_control *control;
146 struct ieee80211_channel *channel;
147 struct ieee80211_rate *rate;
148 /* use this rate (if set) for last fragment; rate can
149 * be set to lower rate for the first fragments, e.g.,
150 * when using CTS protection with IEEE 802.11g. */
151 struct ieee80211_rate *last_frag_rate;
153 /* Extra fragments (in addition to the first fragment
156 struct sk_buff **extra_frag;
159 struct ieee80211_rx_status *status;
160 struct ieee80211_rate *rate;
161 int sent_ps_buffered;
170 /* flags used in struct ieee80211_tx_packet_data.flags */
171 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
172 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
173 #define IEEE80211_TXPD_REQUEUE BIT(2)
174 #define IEEE80211_TXPD_EAPOL_FRAME BIT(3)
175 #define IEEE80211_TXPD_AMPDU BIT(4)
176 /* Stored in sk_buff->cb */
177 struct ieee80211_tx_packet_data {
179 unsigned long jiffies;
184 struct ieee80211_tx_stored_packet {
185 struct ieee80211_tx_control control;
188 struct sk_buff **extra_frag;
189 struct ieee80211_rate *last_frag_rate;
190 unsigned int last_frag_rate_ctrl_probe;
193 typedef ieee80211_tx_result (*ieee80211_tx_handler)
194 (struct ieee80211_txrx_data *tx);
196 typedef ieee80211_rx_result (*ieee80211_rx_handler)
197 (struct ieee80211_txrx_data *rx);
201 int head_len, tail_len;
205 struct ieee80211_if_ap {
206 struct beacon_data *beacon;
208 struct list_head vlans;
210 u8 ssid[IEEE80211_MAX_SSID_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;
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 {
231 struct ieee80211_sub_if_data *ap;
232 struct list_head list;
235 /* flags used in struct ieee80211_if_sta.flags */
236 #define IEEE80211_STA_SSID_SET BIT(0)
237 #define IEEE80211_STA_BSSID_SET BIT(1)
238 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
239 #define IEEE80211_STA_AUTHENTICATED BIT(3)
240 #define IEEE80211_STA_ASSOCIATED BIT(4)
241 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
242 #define IEEE80211_STA_CREATE_IBSS BIT(6)
243 #define IEEE80211_STA_MIXED_CELL BIT(7)
244 #define IEEE80211_STA_WMM_ENABLED BIT(8)
245 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
246 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
247 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
248 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
249 struct ieee80211_if_sta {
251 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
252 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
253 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
255 struct timer_list timer;
256 struct work_struct work;
257 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
258 u8 ssid[IEEE80211_MAX_SSID_LEN];
260 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
261 size_t scan_ssid_len;
264 u8 *extra_ie; /* to be added to the end of AssocReq */
267 /* The last AssocReq/Resp IEs */
268 u8 *assocreq_ies, *assocresp_ies;
269 size_t assocreq_ies_len, assocresp_ies_len;
271 int auth_tries, assoc_tries;
274 #define IEEE80211_STA_REQ_SCAN 0
275 #define IEEE80211_STA_REQ_AUTH 1
276 #define IEEE80211_STA_REQ_RUN 2
277 unsigned long request;
278 struct sk_buff_head skb_queue;
280 unsigned long last_probe;
282 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
283 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
284 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
285 unsigned int auth_algs; /* bitfield of allowed auth algs */
286 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
287 int auth_transaction;
289 unsigned long ibss_join_req;
290 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
291 u32 supp_rates_bits[IEEE80211_NUM_BANDS];
293 int wmm_last_param_set;
297 /* flags used in struct ieee80211_sub_if_data.flags */
298 #define IEEE80211_SDATA_ALLMULTI BIT(0)
299 #define IEEE80211_SDATA_PROMISC BIT(1)
300 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
301 #define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
302 struct ieee80211_sub_if_data {
303 struct list_head list;
305 struct wireless_dev wdev;
308 struct list_head key_list;
310 struct net_device *dev;
311 struct ieee80211_local *local;
315 int drop_unencrypted;
318 * basic rates of this AP or the AP we're associated to
324 /* Fragment table for host-based reassembly */
325 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
326 unsigned int fragment_next;
328 #define NUM_DEFAULT_KEYS 4
329 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
330 struct ieee80211_key *default_key;
333 * BSS configuration for this interface.
335 * FIXME: I feel bad putting this here when we already have a
336 * bss pointer, but the bss pointer is just wrong when
337 * you have multiple virtual STA mode interfaces...
338 * This needs to be fixed.
340 struct ieee80211_bss_conf bss_conf;
341 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
344 struct ieee80211_if_ap ap;
345 struct ieee80211_if_wds wds;
346 struct ieee80211_if_vlan vlan;
347 struct ieee80211_if_sta sta;
353 #ifdef CONFIG_MAC80211_DEBUGFS
354 struct dentry *debugfsdir;
357 struct dentry *channel_use;
358 struct dentry *drop_unencrypted;
359 struct dentry *state;
360 struct dentry *bssid;
361 struct dentry *prev_bssid;
362 struct dentry *ssid_len;
364 struct dentry *ap_capab;
365 struct dentry *capab;
366 struct dentry *extra_ie_len;
367 struct dentry *auth_tries;
368 struct dentry *assoc_tries;
369 struct dentry *auth_algs;
370 struct dentry *auth_alg;
371 struct dentry *auth_transaction;
372 struct dentry *flags;
375 struct dentry *channel_use;
376 struct dentry *drop_unencrypted;
377 struct dentry *num_sta_ps;
378 struct dentry *dtim_count;
379 struct dentry *num_beacons;
380 struct dentry *force_unicast_rateidx;
381 struct dentry *max_ratectrl_rateidx;
382 struct dentry *num_buffered_multicast;
385 struct dentry *channel_use;
386 struct dentry *drop_unencrypted;
390 struct dentry *channel_use;
391 struct dentry *drop_unencrypted;
396 struct dentry *default_key;
399 /* must be last, dynamically sized area in this! */
400 struct ieee80211_vif vif;
404 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
406 return container_of(p, struct ieee80211_sub_if_data, vif);
409 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
412 IEEE80211_RX_MSG = 1,
413 IEEE80211_TX_STATUS_MSG = 2,
414 IEEE80211_DELBA_MSG = 3,
415 IEEE80211_ADDBA_MSG = 4,
418 struct ieee80211_local {
419 /* embed the driver visible part.
420 * don't cast (use the static inlines below), but we keep
421 * it first anyway so they become a no-op */
422 struct ieee80211_hw hw;
424 const struct ieee80211_ops *ops;
426 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
429 /* number of interfaces with corresponding FIF_ flags */
430 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
431 unsigned int filter_flags; /* FIF_* */
432 struct iw_statistics wstats;
434 int tx_headroom; /* required headroom for hardware/radiotap */
437 IEEE80211_DEV_UNINITIALIZED = 0,
438 IEEE80211_DEV_REGISTERED,
439 IEEE80211_DEV_UNREGISTERED,
442 /* Tasklet and skb queue to process calls from IRQ mode. All frames
443 * added to skb_queue will be processed, but frames in
444 * skb_queue_unreliable may be dropped if the total length of these
445 * queues increases over the limit. */
446 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
447 struct tasklet_struct tasklet;
448 struct sk_buff_head skb_queue;
449 struct sk_buff_head skb_queue_unreliable;
451 /* Station data structures */
452 rwlock_t sta_lock; /* protects STA data structures */
453 int num_sta; /* number of stations in sta_list */
454 struct list_head sta_list;
455 struct sta_info *sta_hash[STA_HASH_SIZE];
456 struct timer_list sta_cleanup;
458 unsigned long state[NUM_TX_DATA_QUEUES_AMPDU];
459 struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES_AMPDU];
460 struct tasklet_struct tx_pending_tasklet;
462 /* number of interfaces with corresponding IFF_ flags */
463 atomic_t iff_allmultis, iff_promiscs;
465 struct rate_control_ref *rate_ctrl;
468 int fragmentation_threshold;
469 int short_retry_limit; /* dot11ShortRetryLimit */
470 int long_retry_limit; /* dot11LongRetryLimit */
472 struct crypto_blkcipher *wep_tx_tfm;
473 struct crypto_blkcipher *wep_rx_tfm;
476 int bridge_packets; /* bridge packets between associated stations and
477 * deliver multicast frames both back to wireless
478 * media and to the local net stack */
480 ieee80211_rx_handler *rx_handlers;
481 ieee80211_tx_handler *tx_handlers;
483 struct list_head interfaces;
485 bool sta_sw_scanning;
486 bool sta_hw_scanning;
487 int scan_channel_idx;
488 enum ieee80211_band scan_band;
490 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
491 unsigned long last_scan_completed;
492 struct delayed_work scan_work;
493 struct net_device *scan_dev;
494 struct ieee80211_channel *oper_channel, *scan_channel;
495 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
496 size_t scan_ssid_len;
497 struct list_head sta_bss_list;
498 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
499 spinlock_t sta_bss_lock;
502 /* dot11CountersTable */
503 u32 dot11TransmittedFragmentCount;
504 u32 dot11MulticastTransmittedFrameCount;
505 u32 dot11FailedCount;
507 u32 dot11MultipleRetryCount;
508 u32 dot11FrameDuplicateCount;
509 u32 dot11ReceivedFragmentCount;
510 u32 dot11MulticastReceivedFrameCount;
511 u32 dot11TransmittedFrameCount;
512 u32 dot11WEPUndecryptableCount;
514 #ifdef CONFIG_MAC80211_LEDS
515 int tx_led_counter, rx_led_counter;
516 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
517 char tx_led_name[32], rx_led_name[32],
518 assoc_led_name[32], radio_led_name[32];
524 #ifdef CONFIG_MAC80211_DEBUGFS
525 struct work_struct sta_debugfs_add;
528 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
529 /* TX/RX handler statistics */
530 unsigned int tx_handlers_drop;
531 unsigned int tx_handlers_queued;
532 unsigned int tx_handlers_drop_unencrypted;
533 unsigned int tx_handlers_drop_fragment;
534 unsigned int tx_handlers_drop_wep;
535 unsigned int tx_handlers_drop_not_assoc;
536 unsigned int tx_handlers_drop_unauth_port;
537 unsigned int rx_handlers_drop;
538 unsigned int rx_handlers_queued;
539 unsigned int rx_handlers_drop_nullfunc;
540 unsigned int rx_handlers_drop_defrag;
541 unsigned int rx_handlers_drop_short;
542 unsigned int rx_handlers_drop_passive_scan;
543 unsigned int tx_expand_skb_head;
544 unsigned int tx_expand_skb_head_cloned;
545 unsigned int rx_expand_skb_head;
546 unsigned int rx_expand_skb_head2;
547 unsigned int rx_handlers_fragments;
548 unsigned int tx_status_drop;
549 unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
550 unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
551 #define I802_DEBUG_INC(c) (c)++
552 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
553 #define I802_DEBUG_INC(c) do { } while (0)
554 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
557 int total_ps_buffered; /* total number of all buffered unicast and
558 * multicast packets for power saving stations
560 int wifi_wme_noack_test;
561 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
563 #ifdef CONFIG_MAC80211_DEBUGFS
564 struct local_debugfsdentries {
565 struct dentry *frequency;
566 struct dentry *antenna_sel_tx;
567 struct dentry *antenna_sel_rx;
568 struct dentry *bridge_packets;
569 struct dentry *rts_threshold;
570 struct dentry *fragmentation_threshold;
571 struct dentry *short_retry_limit;
572 struct dentry *long_retry_limit;
573 struct dentry *total_ps_buffered;
574 struct dentry *wep_iv;
575 struct dentry *statistics;
576 struct local_debugfsdentries_statsdentries {
577 struct dentry *transmitted_fragment_count;
578 struct dentry *multicast_transmitted_frame_count;
579 struct dentry *failed_count;
580 struct dentry *retry_count;
581 struct dentry *multiple_retry_count;
582 struct dentry *frame_duplicate_count;
583 struct dentry *received_fragment_count;
584 struct dentry *multicast_received_frame_count;
585 struct dentry *transmitted_frame_count;
586 struct dentry *wep_undecryptable_count;
587 struct dentry *num_scans;
588 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
589 struct dentry *tx_handlers_drop;
590 struct dentry *tx_handlers_queued;
591 struct dentry *tx_handlers_drop_unencrypted;
592 struct dentry *tx_handlers_drop_fragment;
593 struct dentry *tx_handlers_drop_wep;
594 struct dentry *tx_handlers_drop_not_assoc;
595 struct dentry *tx_handlers_drop_unauth_port;
596 struct dentry *rx_handlers_drop;
597 struct dentry *rx_handlers_queued;
598 struct dentry *rx_handlers_drop_nullfunc;
599 struct dentry *rx_handlers_drop_defrag;
600 struct dentry *rx_handlers_drop_short;
601 struct dentry *rx_handlers_drop_passive_scan;
602 struct dentry *tx_expand_skb_head;
603 struct dentry *tx_expand_skb_head_cloned;
604 struct dentry *rx_expand_skb_head;
605 struct dentry *rx_expand_skb_head2;
606 struct dentry *rx_handlers_fragments;
607 struct dentry *tx_status_drop;
608 struct dentry *wme_tx_queue;
609 struct dentry *wme_rx_queue;
611 struct dentry *dot11ACKFailureCount;
612 struct dentry *dot11RTSFailureCount;
613 struct dentry *dot11FCSErrorCount;
614 struct dentry *dot11RTSSuccessCount;
616 struct dentry *stations;
622 /* this struct represents 802.11n's RA/TID combination */
623 struct ieee80211_ra_tid {
628 static inline struct ieee80211_local *hw_to_local(
629 struct ieee80211_hw *hw)
631 return container_of(hw, struct ieee80211_local, hw);
634 static inline struct ieee80211_hw *local_to_hw(
635 struct ieee80211_local *local)
640 enum ieee80211_link_state_t {
641 IEEE80211_LINK_STATE_XOFF = 0,
642 IEEE80211_LINK_STATE_PENDING,
645 struct sta_attribute {
646 struct attribute attr;
647 ssize_t (*show)(const struct sta_info *, char *buf);
648 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
651 static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid)
654 * This format has been mandated by the IEEE specifications,
655 * so this line may not be changed to use the __set_bit() format.
657 bss->tim[aid / 8] |= (1 << (aid % 8));
660 static inline void bss_tim_set(struct ieee80211_local *local,
661 struct ieee80211_if_ap *bss, u16 aid)
663 read_lock_bh(&local->sta_lock);
664 __bss_tim_set(bss, aid);
665 read_unlock_bh(&local->sta_lock);
668 static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid)
671 * This format has been mandated by the IEEE specifications,
672 * so this line may not be changed to use the __clear_bit() format.
674 bss->tim[aid / 8] &= ~(1 << (aid % 8));
677 static inline void bss_tim_clear(struct ieee80211_local *local,
678 struct ieee80211_if_ap *bss, u16 aid)
680 read_lock_bh(&local->sta_lock);
681 __bss_tim_clear(bss, aid);
682 read_unlock_bh(&local->sta_lock);
685 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
687 return compare_ether_addr(raddr, addr) == 0 ||
688 is_broadcast_ether_addr(raddr);
693 int ieee80211_hw_config(struct ieee80211_local *local);
694 int ieee80211_if_config(struct net_device *dev);
695 int ieee80211_if_config_beacon(struct net_device *dev);
696 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
697 int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
698 void ieee80211_if_setup(struct net_device *dev);
699 int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
700 struct ieee80211_ht_info *req_ht_cap,
701 struct ieee80211_ht_bss_info *req_bss_cap);
703 /* ieee80211_ioctl.c */
704 extern const struct iw_handler_def ieee80211_iw_handler_def;
707 /* Least common multiple of the used rates (in 100 kbps). This is used to
708 * calculate rate_inv values for each rate so that only integers are needed. */
709 #define CHAN_UTIL_RATE_LCM 95040
710 /* 1 usec is 1/8 * (95040/10) = 1188 */
711 #define CHAN_UTIL_PER_USEC 1188
712 /* Amount of bits to shift the result right to scale the total utilization
713 * to values that will not wrap around 32-bit integers. */
714 #define CHAN_UTIL_SHIFT 9
715 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
716 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
717 * raw value with about 23 should give utilization in 10th of a percentage
718 * (1/1000). However, utilization is only estimated and not all intervals
719 * between frames etc. are calculated. 18 seems to give numbers that are closer
720 * to the real maximum. */
721 #define CHAN_UTIL_PER_10MS 18
722 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
723 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
726 /* ieee80211_ioctl.c */
727 int ieee80211_set_compression(struct ieee80211_local *local,
728 struct net_device *dev, struct sta_info *sta);
729 int ieee80211_set_freq(struct ieee80211_local *local, int freq);
730 /* ieee80211_sta.c */
731 void ieee80211_sta_timer(unsigned long data);
732 void ieee80211_sta_work(struct work_struct *work);
733 void ieee80211_sta_scan_work(struct work_struct *work);
734 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
735 struct ieee80211_rx_status *rx_status);
736 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
737 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
738 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
739 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
740 void ieee80211_sta_req_auth(struct net_device *dev,
741 struct ieee80211_if_sta *ifsta);
742 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
743 ieee80211_rx_result ieee80211_sta_rx_scan(
744 struct net_device *dev, struct sk_buff *skb,
745 struct ieee80211_rx_status *rx_status);
746 void ieee80211_rx_bss_list_init(struct net_device *dev);
747 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
748 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
749 struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
750 struct sk_buff *skb, u8 *bssid,
752 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
753 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
754 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
756 void ieee80211_reset_erp_info(struct net_device *dev);
757 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
758 struct ieee80211_ht_info *ht_info);
759 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
760 struct ieee80211_ht_addt_info *ht_add_info_ie,
761 struct ieee80211_ht_bss_info *bss_info);
762 void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
763 u16 tid, u8 dialog_token, u16 start_seq_num,
764 u16 agg_size, u16 timeout);
765 void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
766 u16 initiator, u16 reason_code);
767 void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
768 u16 tid, u16 initiator, u16 reason);
769 void sta_rx_agg_session_timer_expired(unsigned long data);
770 void sta_addba_resp_timer_expired(unsigned long data);
771 /* ieee80211_iface.c */
772 int ieee80211_if_add(struct net_device *dev, const char *name,
773 struct net_device **new_dev, int type);
774 void ieee80211_if_set_type(struct net_device *dev, int type);
775 void ieee80211_if_reinit(struct net_device *dev);
776 void __ieee80211_if_del(struct ieee80211_local *local,
777 struct ieee80211_sub_if_data *sdata);
778 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
779 void ieee80211_if_free(struct net_device *dev);
780 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
783 extern ieee80211_rx_handler ieee80211_rx_handlers[];
786 extern ieee80211_tx_handler ieee80211_tx_handlers[];
787 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
788 void ieee80211_tx_pending(unsigned long data);
789 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
790 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
791 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
793 /* utility functions/constants */
794 extern void *mac80211_wiphy_privid; /* for wiphy privid */
795 extern const unsigned char rfc1042_header[6];
796 extern const unsigned char bridge_tunnel_header[6];
797 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
798 enum ieee80211_if_types type);
799 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
800 int rate, int erp, int short_preamble);
801 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
802 struct ieee80211_hdr *hdr);
804 #endif /* IEEE80211_I_H */