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>
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.
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>
32 /* ieee80211.o internal definitions, etc. These are not included into
33 * low-level drivers. */
35 struct ieee80211_local;
37 /* Maximum number of broadcast/multicast frames to buffer when some of the
38 * associated stations are using power saving. */
39 #define AP_MAX_BC_BUFFER 128
41 /* Maximum number of frames buffered to all STAs, including multicast frames.
42 * Note: increasing this limit increases the potential memory requirement. Each
43 * frame can be up to about 2 kB long. */
44 #define TOTAL_MAX_TX_BUFFER 512
46 /* Required encryption head and tailroom */
47 #define IEEE80211_ENCRYPT_HEADROOM 8
48 #define IEEE80211_ENCRYPT_TAILROOM 12
50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51 * reception of at least three fragmented frames. This limit can be increased
52 * by changing this define, at the cost of slower frame reassembly and
53 * increased memory use (about 2 kB of RAM per entry). */
54 #define IEEE80211_FRAGMENT_MAX 4
56 struct ieee80211_fragment_entry {
57 unsigned long first_frag_time;
59 unsigned int rx_queue;
60 unsigned int last_frag;
61 unsigned int extra_len;
62 struct sk_buff_head skb_list;
63 int ccmp; /* Whether fragments were encrypted with CCMP */
64 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
68 struct ieee80211_sta_bss {
69 struct list_head list;
70 struct ieee80211_sta_bss *hnext;
76 u8 ssid[IEEE80211_MAX_SSID_LEN];
78 u16 capability; /* host byte order */
79 enum ieee80211_band band;
81 int signal, noise, qual;
82 u8 *ies; /* all information elements from the last Beacon or Probe
83 * Response frames; note Beacon frame is not allowed to
84 * override values from Probe Response */
87 #ifdef CONFIG_MAC80211_MESH
92 #define IEEE80211_MAX_SUPP_RATES 32
93 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
94 size_t supp_rates_len;
98 unsigned long last_probe_resp;
99 unsigned long last_update;
101 /* during assocation, we save an ERP value from a probe response so
102 * that we can feed ERP info to the driver when handling the
103 * association completes. these fields probably won't be up-to-date
104 * otherwise, you probably don't want to use them. */
109 static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
111 #ifdef CONFIG_MAC80211_MESH
112 return bss->mesh_cfg;
117 static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss)
119 #ifdef CONFIG_MAC80211_MESH
125 static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss)
127 #ifdef CONFIG_MAC80211_MESH
128 return bss->mesh_id_len;
134 typedef unsigned __bitwise__ ieee80211_tx_result;
135 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
136 #define TX_DROP ((__force ieee80211_tx_result) 1u)
137 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
139 #define IEEE80211_TX_FRAGMENTED BIT(0)
140 #define IEEE80211_TX_UNICAST BIT(1)
141 #define IEEE80211_TX_PS_BUFFERED BIT(2)
142 #define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
144 struct ieee80211_tx_data {
146 struct net_device *dev;
147 struct ieee80211_local *local;
148 struct ieee80211_sub_if_data *sdata;
149 struct sta_info *sta;
150 struct ieee80211_key *key;
152 struct ieee80211_channel *channel;
154 /* use this rate (if set) for last fragment; rate can
155 * be set to lower rate for the first fragments, e.g.,
156 * when using CTS protection with IEEE 802.11g. */
157 s8 last_frag_rate_idx;
159 /* Extra fragments (in addition to the first fragment
161 struct sk_buff **extra_frag;
169 typedef unsigned __bitwise__ ieee80211_rx_result;
170 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
171 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
172 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
173 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
175 #define IEEE80211_RX_IN_SCAN BIT(0)
176 /* frame is destined to interface currently processed (incl. multicast frames) */
177 #define IEEE80211_RX_RA_MATCH BIT(1)
178 #define IEEE80211_RX_AMSDU BIT(2)
179 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
180 #define IEEE80211_RX_FRAGMENTED BIT(4)
182 struct ieee80211_rx_data {
184 struct net_device *dev;
185 struct ieee80211_local *local;
186 struct ieee80211_sub_if_data *sdata;
187 struct sta_info *sta;
188 struct ieee80211_key *key;
189 struct ieee80211_rx_status *status;
190 struct ieee80211_rate *rate;
194 int sent_ps_buffered;
200 struct ieee80211_tx_stored_packet {
202 struct sk_buff **extra_frag;
203 s8 last_frag_rate_idx;
205 bool last_frag_rate_ctrl_probe;
210 int head_len, tail_len;
214 struct ieee80211_if_ap {
215 struct beacon_data *beacon;
217 struct list_head vlans;
219 u8 ssid[IEEE80211_MAX_SSID_LEN];
222 /* yes, this looks ugly, but guarantees that we can later use
224 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
225 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
226 struct sk_buff_head ps_bc_buf;
227 atomic_t num_sta_ps; /* number of stations in PS mode */
229 int num_beacons; /* number of TXed beacon frames for this BSS */
232 struct ieee80211_if_wds {
233 struct sta_info *sta;
234 u8 remote_addr[ETH_ALEN];
237 struct ieee80211_if_vlan {
238 struct list_head list;
242 __u32 fwded_frames; /* Mesh forwarded frames */
243 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
244 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
245 atomic_t estab_plinks;
248 #define PREQ_Q_F_START 0x1
249 #define PREQ_Q_F_REFRESH 0x2
250 struct mesh_preq_queue {
251 struct list_head list;
258 /* Mesh plink management parameters */
259 u16 dot11MeshRetryTimeout;
260 u16 dot11MeshConfirmTimeout;
261 u16 dot11MeshHoldingTimeout;
262 u16 dot11MeshMaxPeerLinks;
263 u8 dot11MeshMaxRetries;
265 bool auto_open_plinks;
266 /* HWMP parameters */
267 u8 dot11MeshHWMPmaxPREQretries;
268 u32 path_refresh_time;
269 u16 min_discovery_timeout;
270 u32 dot11MeshHWMPactivePathTimeout;
271 u16 dot11MeshHWMPpreqMinInterval;
272 u16 dot11MeshHWMPnetDiameterTraversalTime;
276 /* flags used in struct ieee80211_if_sta.flags */
277 #define IEEE80211_STA_SSID_SET BIT(0)
278 #define IEEE80211_STA_BSSID_SET BIT(1)
279 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
280 #define IEEE80211_STA_AUTHENTICATED BIT(3)
281 #define IEEE80211_STA_ASSOCIATED BIT(4)
282 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
283 #define IEEE80211_STA_CREATE_IBSS BIT(6)
284 #define IEEE80211_STA_MIXED_CELL BIT(7)
285 #define IEEE80211_STA_WMM_ENABLED BIT(8)
286 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
287 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
288 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
289 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
290 /* flags for MLME request*/
291 #define IEEE80211_STA_REQ_SCAN 0
292 #define IEEE80211_STA_REQ_DIRECT_PROBE 1
293 #define IEEE80211_STA_REQ_AUTH 2
294 #define IEEE80211_STA_REQ_RUN 3
296 /* flags used for setting mlme state */
297 enum ieee80211_sta_mlme_state {
298 IEEE80211_STA_MLME_DISABLED,
299 IEEE80211_STA_MLME_DIRECT_PROBE,
300 IEEE80211_STA_MLME_AUTHENTICATE,
301 IEEE80211_STA_MLME_ASSOCIATE,
302 IEEE80211_STA_MLME_ASSOCIATED,
303 IEEE80211_STA_MLME_IBSS_SEARCH,
304 IEEE80211_STA_MLME_IBSS_JOINED,
305 IEEE80211_STA_MLME_MESH_UP
308 /* bitfield of allowed auth algs */
309 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
310 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
311 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
313 struct ieee80211_if_sta {
314 struct timer_list timer;
315 struct work_struct work;
316 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
317 u8 ssid[IEEE80211_MAX_SSID_LEN];
318 enum ieee80211_sta_mlme_state state;
320 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
321 size_t scan_ssid_len;
322 #ifdef CONFIG_MAC80211_MESH
323 struct timer_list mesh_path_timer;
324 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
326 /* Active Path Selection Protocol Identifier */
328 /* Active Path Selection Metric Identifier */
330 /* Congestion Control Mode Identifier */
332 /* Local mesh Destination Sequence Number */
334 /* Last used PREQ ID */
337 /* Timestamp of last DSN update */
338 unsigned long last_dsn_update;
339 /* Timestamp of last DSN sent */
340 unsigned long last_preq;
341 struct mesh_rmc *rmc;
342 spinlock_t mesh_preq_queue_lock;
343 struct mesh_preq_queue preq_queue;
345 struct mesh_stats mshstats;
346 struct mesh_config mshcfg;
348 bool accepting_plinks;
352 u8 *extra_ie; /* to be added to the end of AssocReq */
355 /* The last AssocReq/Resp IEs */
356 u8 *assocreq_ies, *assocresp_ies;
357 size_t assocreq_ies_len, assocresp_ies_len;
359 struct sk_buff_head skb_queue;
361 int assoc_scan_tries; /* number of scans done pre-association */
362 int direct_probe_tries; /* retries for direct probes */
363 int auth_tries; /* retries for auth req */
364 int assoc_tries; /* retries for assoc req */
366 unsigned long request;
368 unsigned long last_probe;
372 unsigned int auth_algs; /* bitfield of allowed auth algs */
373 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
374 int auth_transaction;
376 unsigned long ibss_join_req;
377 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
378 u32 supp_rates_bits[IEEE80211_NUM_BANDS];
380 int wmm_last_param_set;
381 int num_beacons; /* number of TXed beacon frames by this STA */
384 static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
385 u8 mesh_id_len, u8 *mesh_id)
387 #ifdef CONFIG_MAC80211_MESH
388 ifsta->mesh_id_len = mesh_id_len;
389 memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
393 #ifdef CONFIG_MAC80211_MESH
394 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
395 do { (sta)->mshstats.name++; } while (0)
397 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
401 /* flags used in struct ieee80211_sub_if_data.flags */
402 #define IEEE80211_SDATA_ALLMULTI BIT(0)
403 #define IEEE80211_SDATA_PROMISC BIT(1)
404 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
405 #define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
406 struct ieee80211_sub_if_data {
407 struct list_head list;
409 struct wireless_dev wdev;
412 struct list_head key_list;
414 struct net_device *dev;
415 struct ieee80211_local *local;
419 int drop_unencrypted;
422 * basic rates of this AP or the AP we're associated to
426 /* Fragment table for host-based reassembly */
427 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
428 unsigned int fragment_next;
430 #define NUM_DEFAULT_KEYS 4
431 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
432 struct ieee80211_key *default_key;
434 /* BSS configuration for this interface. */
435 struct ieee80211_bss_conf bss_conf;
438 * AP this belongs to: self in AP mode and
439 * corresponding AP in VLAN mode, NULL for
440 * all others (might be needed later in IBSS)
442 struct ieee80211_if_ap *bss;
444 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
445 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
448 struct ieee80211_if_ap ap;
449 struct ieee80211_if_wds wds;
450 struct ieee80211_if_vlan vlan;
451 struct ieee80211_if_sta sta;
455 #ifdef CONFIG_MAC80211_DEBUGFS
456 struct dentry *debugfsdir;
459 struct dentry *drop_unencrypted;
460 struct dentry *state;
461 struct dentry *bssid;
462 struct dentry *prev_bssid;
463 struct dentry *ssid_len;
465 struct dentry *ap_capab;
466 struct dentry *capab;
467 struct dentry *extra_ie_len;
468 struct dentry *auth_tries;
469 struct dentry *assoc_tries;
470 struct dentry *auth_algs;
471 struct dentry *auth_alg;
472 struct dentry *auth_transaction;
473 struct dentry *flags;
474 struct dentry *num_beacons_sta;
475 struct dentry *force_unicast_rateidx;
476 struct dentry *max_ratectrl_rateidx;
479 struct dentry *drop_unencrypted;
480 struct dentry *num_sta_ps;
481 struct dentry *dtim_count;
482 struct dentry *num_beacons;
483 struct dentry *force_unicast_rateidx;
484 struct dentry *max_ratectrl_rateidx;
485 struct dentry *num_buffered_multicast;
488 struct dentry *drop_unencrypted;
490 struct dentry *force_unicast_rateidx;
491 struct dentry *max_ratectrl_rateidx;
494 struct dentry *drop_unencrypted;
495 struct dentry *force_unicast_rateidx;
496 struct dentry *max_ratectrl_rateidx;
503 struct dentry *default_key;
506 #ifdef CONFIG_MAC80211_MESH
507 struct dentry *mesh_stats_dir;
509 struct dentry *fwded_frames;
510 struct dentry *dropped_frames_ttl;
511 struct dentry *dropped_frames_no_route;
512 struct dentry *estab_plinks;
513 struct timer_list mesh_path_timer;
516 struct dentry *mesh_config_dir;
518 struct dentry *dot11MeshRetryTimeout;
519 struct dentry *dot11MeshConfirmTimeout;
520 struct dentry *dot11MeshHoldingTimeout;
521 struct dentry *dot11MeshMaxRetries;
522 struct dentry *dot11MeshTTL;
523 struct dentry *auto_open_plinks;
524 struct dentry *dot11MeshMaxPeerLinks;
525 struct dentry *dot11MeshHWMPactivePathTimeout;
526 struct dentry *dot11MeshHWMPpreqMinInterval;
527 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
528 struct dentry *dot11MeshHWMPmaxPREQretries;
529 struct dentry *path_refresh_time;
530 struct dentry *min_discovery_timeout;
535 /* must be last, dynamically sized area in this! */
536 struct ieee80211_vif vif;
540 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
542 return container_of(p, struct ieee80211_sub_if_data, vif);
546 IEEE80211_RX_MSG = 1,
547 IEEE80211_TX_STATUS_MSG = 2,
548 IEEE80211_DELBA_MSG = 3,
549 IEEE80211_ADDBA_MSG = 4,
552 /* maximum number of hardware queues we support. */
553 #define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES)
555 struct ieee80211_local {
556 /* embed the driver visible part.
557 * don't cast (use the static inlines below), but we keep
558 * it first anyway so they become a no-op */
559 struct ieee80211_hw hw;
561 const struct ieee80211_ops *ops;
563 unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)];
565 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
567 int monitors, cooked_mntrs;
568 /* number of interfaces with corresponding FIF_ flags */
569 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
570 unsigned int filter_flags; /* FIF_* */
571 struct iw_statistics wstats;
573 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
574 int tx_headroom; /* required headroom for hardware/radiotap */
576 /* Tasklet and skb queue to process calls from IRQ mode. All frames
577 * added to skb_queue will be processed, but frames in
578 * skb_queue_unreliable may be dropped if the total length of these
579 * queues increases over the limit. */
580 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
581 struct tasklet_struct tasklet;
582 struct sk_buff_head skb_queue;
583 struct sk_buff_head skb_queue_unreliable;
587 * The lock only protects the list, hash, timer and counter
588 * against manipulation, reads are done in RCU. Additionally,
589 * the lock protects each BSS's TIM bitmap.
592 unsigned long num_sta;
593 struct list_head sta_list;
594 struct list_head sta_flush_list;
595 struct work_struct sta_flush_work;
596 struct sta_info *sta_hash[STA_HASH_SIZE];
597 struct timer_list sta_cleanup;
599 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
600 unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
601 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
602 struct tasklet_struct tx_pending_tasklet;
604 /* number of interfaces with corresponding IFF_ flags */
605 atomic_t iff_allmultis, iff_promiscs;
607 struct rate_control_ref *rate_ctrl;
610 int fragmentation_threshold;
611 int short_retry_limit; /* dot11ShortRetryLimit */
612 int long_retry_limit; /* dot11LongRetryLimit */
614 struct crypto_blkcipher *wep_tx_tfm;
615 struct crypto_blkcipher *wep_rx_tfm;
618 int bridge_packets; /* bridge packets between associated stations and
619 * deliver multicast frames both back to wireless
620 * media and to the local net stack */
622 struct list_head interfaces;
625 * Key lock, protects sdata's key_list and sta_info's
626 * key pointers (write access, they're RCU.)
631 bool sta_sw_scanning;
632 bool sta_hw_scanning;
633 int scan_channel_idx;
634 enum ieee80211_band scan_band;
636 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
637 unsigned long last_scan_completed;
638 struct delayed_work scan_work;
639 struct net_device *scan_dev;
640 struct ieee80211_channel *oper_channel, *scan_channel;
641 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
642 size_t scan_ssid_len;
643 struct list_head sta_bss_list;
644 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
645 spinlock_t sta_bss_lock;
648 /* dot11CountersTable */
649 u32 dot11TransmittedFragmentCount;
650 u32 dot11MulticastTransmittedFrameCount;
651 u32 dot11FailedCount;
653 u32 dot11MultipleRetryCount;
654 u32 dot11FrameDuplicateCount;
655 u32 dot11ReceivedFragmentCount;
656 u32 dot11MulticastReceivedFrameCount;
657 u32 dot11TransmittedFrameCount;
658 u32 dot11WEPUndecryptableCount;
660 #ifdef CONFIG_MAC80211_LEDS
661 int tx_led_counter, rx_led_counter;
662 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
663 char tx_led_name[32], rx_led_name[32],
664 assoc_led_name[32], radio_led_name[32];
667 #ifdef CONFIG_MAC80211_DEBUGFS
668 struct work_struct sta_debugfs_add;
671 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
672 /* TX/RX handler statistics */
673 unsigned int tx_handlers_drop;
674 unsigned int tx_handlers_queued;
675 unsigned int tx_handlers_drop_unencrypted;
676 unsigned int tx_handlers_drop_fragment;
677 unsigned int tx_handlers_drop_wep;
678 unsigned int tx_handlers_drop_not_assoc;
679 unsigned int tx_handlers_drop_unauth_port;
680 unsigned int rx_handlers_drop;
681 unsigned int rx_handlers_queued;
682 unsigned int rx_handlers_drop_nullfunc;
683 unsigned int rx_handlers_drop_defrag;
684 unsigned int rx_handlers_drop_short;
685 unsigned int rx_handlers_drop_passive_scan;
686 unsigned int tx_expand_skb_head;
687 unsigned int tx_expand_skb_head_cloned;
688 unsigned int rx_expand_skb_head;
689 unsigned int rx_expand_skb_head2;
690 unsigned int rx_handlers_fragments;
691 unsigned int tx_status_drop;
692 #define I802_DEBUG_INC(c) (c)++
693 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
694 #define I802_DEBUG_INC(c) do { } while (0)
695 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
698 int total_ps_buffered; /* total number of all buffered unicast and
699 * multicast packets for power saving stations
701 int wifi_wme_noack_test;
702 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
704 #ifdef CONFIG_MAC80211_DEBUGFS
705 struct local_debugfsdentries {
706 struct dentry *frequency;
707 struct dentry *antenna_sel_tx;
708 struct dentry *antenna_sel_rx;
709 struct dentry *bridge_packets;
710 struct dentry *rts_threshold;
711 struct dentry *fragmentation_threshold;
712 struct dentry *short_retry_limit;
713 struct dentry *long_retry_limit;
714 struct dentry *total_ps_buffered;
715 struct dentry *wep_iv;
716 struct dentry *statistics;
717 struct local_debugfsdentries_statsdentries {
718 struct dentry *transmitted_fragment_count;
719 struct dentry *multicast_transmitted_frame_count;
720 struct dentry *failed_count;
721 struct dentry *retry_count;
722 struct dentry *multiple_retry_count;
723 struct dentry *frame_duplicate_count;
724 struct dentry *received_fragment_count;
725 struct dentry *multicast_received_frame_count;
726 struct dentry *transmitted_frame_count;
727 struct dentry *wep_undecryptable_count;
728 struct dentry *num_scans;
729 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
730 struct dentry *tx_handlers_drop;
731 struct dentry *tx_handlers_queued;
732 struct dentry *tx_handlers_drop_unencrypted;
733 struct dentry *tx_handlers_drop_fragment;
734 struct dentry *tx_handlers_drop_wep;
735 struct dentry *tx_handlers_drop_not_assoc;
736 struct dentry *tx_handlers_drop_unauth_port;
737 struct dentry *rx_handlers_drop;
738 struct dentry *rx_handlers_queued;
739 struct dentry *rx_handlers_drop_nullfunc;
740 struct dentry *rx_handlers_drop_defrag;
741 struct dentry *rx_handlers_drop_short;
742 struct dentry *rx_handlers_drop_passive_scan;
743 struct dentry *tx_expand_skb_head;
744 struct dentry *tx_expand_skb_head_cloned;
745 struct dentry *rx_expand_skb_head;
746 struct dentry *rx_expand_skb_head2;
747 struct dentry *rx_handlers_fragments;
748 struct dentry *tx_status_drop;
750 struct dentry *dot11ACKFailureCount;
751 struct dentry *dot11RTSFailureCount;
752 struct dentry *dot11FCSErrorCount;
753 struct dentry *dot11RTSSuccessCount;
755 struct dentry *stations;
761 static inline struct ieee80211_sub_if_data *
762 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
764 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
766 BUG_ON(!local || local->mdev == dev);
768 return netdev_priv(dev);
771 /* this struct represents 802.11n's RA/TID combination */
772 struct ieee80211_ra_tid {
777 /* Parsed Information Elements */
778 struct ieee802_11_elems {
782 /* pointers to IEs */
808 u8 *quiet_elem; /* first quite element */
810 /* length of them, respectively */
822 u8 ext_supp_rates_len;
833 u8 ch_switch_elem_len;
835 u8 pwr_constr_elem_len;
837 u8 num_of_quiet_elem; /* can be more the one */
840 static inline struct ieee80211_local *hw_to_local(
841 struct ieee80211_hw *hw)
843 return container_of(hw, struct ieee80211_local, hw);
846 static inline struct ieee80211_hw *local_to_hw(
847 struct ieee80211_local *local)
852 struct sta_attribute {
853 struct attribute attr;
854 ssize_t (*show)(const struct sta_info *, char *buf);
855 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
858 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
860 return compare_ether_addr(raddr, addr) == 0 ||
861 is_broadcast_ether_addr(raddr);
866 int ieee80211_hw_config(struct ieee80211_local *local);
867 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
868 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
869 u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
870 struct ieee80211_ht_info *req_ht_cap,
871 struct ieee80211_ht_bss_info *req_bss_cap);
873 /* ieee80211_ioctl.c */
874 extern const struct iw_handler_def ieee80211_iw_handler_def;
875 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
877 /* ieee80211_sta.c */
878 void ieee80211_sta_timer(unsigned long data);
879 void ieee80211_sta_work(struct work_struct *work);
880 void ieee80211_sta_scan_work(struct work_struct *work);
881 void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
882 struct ieee80211_rx_status *rx_status);
883 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
884 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
885 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
886 int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
887 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
888 struct ieee80211_if_sta *ifsta);
889 int ieee80211_sta_scan_results(struct ieee80211_local *local,
890 struct iw_request_info *info,
891 char *buf, size_t len);
892 ieee80211_rx_result ieee80211_sta_rx_scan(
893 struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
894 struct ieee80211_rx_status *rx_status);
895 void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
896 void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
897 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len);
898 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
899 struct sk_buff *skb, u8 *bssid,
900 u8 *addr, u64 supp_rates);
901 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
902 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
903 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
905 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
906 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
907 struct ieee80211_ht_info *ht_info);
908 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
909 struct ieee80211_ht_addt_info *ht_add_info_ie,
910 struct ieee80211_ht_bss_info *bss_info);
911 void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
912 u16 tid, u8 dialog_token, u16 start_seq_num,
913 u16 agg_size, u16 timeout);
914 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
915 u16 initiator, u16 reason_code);
916 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
918 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
919 u16 tid, u16 initiator, u16 reason);
920 void sta_addba_resp_timer_expired(unsigned long data);
921 void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr);
922 u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
923 struct ieee802_11_elems *elems,
924 enum ieee80211_band band);
925 void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
927 void ieee802_11_parse_elems(u8 *start, size_t len,
928 struct ieee802_11_elems *elems);
930 #ifdef CONFIG_MAC80211_MESH
931 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
933 static inline void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
937 /* interface handling */
938 void ieee80211_if_setup(struct net_device *dev);
939 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
940 struct net_device **new_dev, enum ieee80211_if_types type,
941 struct vif_params *params);
942 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
943 enum ieee80211_if_types type);
944 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
945 void ieee80211_remove_interfaces(struct ieee80211_local *local);
948 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
949 void ieee80211_tx_pending(unsigned long data);
950 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
951 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
952 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
954 /* utility functions/constants */
955 extern void *mac80211_wiphy_privid; /* for wiphy privid */
956 extern const unsigned char rfc1042_header[6];
957 extern const unsigned char bridge_tunnel_header[6];
958 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
959 enum ieee80211_if_types type);
960 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
961 int rate, int erp, int short_preamble);
962 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
963 struct ieee80211_hdr *hdr);
965 #ifdef CONFIG_MAC80211_NOINLINE
966 #define debug_noinline noinline
968 #define debug_noinline
971 #endif /* IEEE80211_I_H */