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/cfg80211.h>
27 #include <net/wireless.h>
28 #include <net/iw_handler.h>
29 #include <net/mac80211.h>
33 struct ieee80211_local;
35 /* Maximum number of broadcast/multicast frames to buffer when some of the
36 * associated stations are using power saving. */
37 #define AP_MAX_BC_BUFFER 128
39 /* Maximum number of frames buffered to all STAs, including multicast frames.
40 * Note: increasing this limit increases the potential memory requirement. Each
41 * frame can be up to about 2 kB long. */
42 #define TOTAL_MAX_TX_BUFFER 512
44 /* Required encryption head and tailroom */
45 #define IEEE80211_ENCRYPT_HEADROOM 8
46 #define IEEE80211_ENCRYPT_TAILROOM 18
48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
49 * reception of at least three fragmented frames. This limit can be increased
50 * by changing this define, at the cost of slower frame reassembly and
51 * increased memory use (about 2 kB of RAM per entry). */
52 #define IEEE80211_FRAGMENT_MAX 4
55 * Time after which we ignore scan results and no longer report/use
58 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
60 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
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_bss {
75 /* Yes, this is a hack */
76 struct cfg80211_bss cbss;
78 /* don't want to look up all the time */
80 u8 ssid[IEEE80211_MAX_SSID_LEN];
86 unsigned long last_probe_resp;
88 #ifdef CONFIG_MAC80211_MESH
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
99 * During assocation, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
108 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
110 #ifdef CONFIG_MAC80211_MESH
111 return bss->mesh_cfg;
116 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
118 #ifdef CONFIG_MAC80211_MESH
124 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
126 #ifdef CONFIG_MAC80211_MESH
127 return bss->mesh_id_len;
133 typedef unsigned __bitwise__ ieee80211_tx_result;
134 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
135 #define TX_DROP ((__force ieee80211_tx_result) 1u)
136 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
138 #define IEEE80211_TX_FRAGMENTED BIT(0)
139 #define IEEE80211_TX_UNICAST BIT(1)
140 #define IEEE80211_TX_PS_BUFFERED BIT(2)
142 struct ieee80211_tx_data {
144 struct net_device *dev;
145 struct ieee80211_local *local;
146 struct ieee80211_sub_if_data *sdata;
147 struct sta_info *sta;
148 struct ieee80211_key *key;
150 struct ieee80211_channel *channel;
157 typedef unsigned __bitwise__ ieee80211_rx_result;
158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
163 #define IEEE80211_RX_IN_SCAN BIT(0)
164 /* frame is destined to interface currently processed (incl. multicast frames) */
165 #define IEEE80211_RX_RA_MATCH BIT(1)
166 #define IEEE80211_RX_AMSDU BIT(2)
167 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
168 #define IEEE80211_RX_FRAGMENTED BIT(4)
170 struct ieee80211_rx_data {
172 struct net_device *dev;
173 struct ieee80211_local *local;
174 struct ieee80211_sub_if_data *sdata;
175 struct sta_info *sta;
176 struct ieee80211_key *key;
177 struct ieee80211_rx_status *status;
178 struct ieee80211_rate *rate;
181 int sent_ps_buffered;
189 int head_len, tail_len;
193 struct ieee80211_if_ap {
194 struct beacon_data *beacon;
196 struct list_head vlans;
198 /* yes, this looks ugly, but guarantees that we can later use
200 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
201 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
202 struct sk_buff_head ps_bc_buf;
203 atomic_t num_sta_ps; /* number of stations in PS mode */
207 struct ieee80211_if_wds {
208 struct sta_info *sta;
209 u8 remote_addr[ETH_ALEN];
212 struct ieee80211_if_vlan {
213 struct list_head list;
217 __u32 fwded_frames; /* Mesh forwarded frames */
218 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
219 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
220 atomic_t estab_plinks;
223 #define PREQ_Q_F_START 0x1
224 #define PREQ_Q_F_REFRESH 0x2
225 struct mesh_preq_queue {
226 struct list_head list;
231 /* flags used in struct ieee80211_if_managed.flags */
232 #define IEEE80211_STA_SSID_SET BIT(0)
233 #define IEEE80211_STA_BSSID_SET BIT(1)
234 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
235 #define IEEE80211_STA_AUTHENTICATED BIT(3)
236 #define IEEE80211_STA_ASSOCIATED BIT(4)
237 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
238 #define IEEE80211_STA_CREATE_IBSS BIT(6)
239 /* hole at 7, please re-use */
240 #define IEEE80211_STA_WMM_ENABLED BIT(8)
241 /* hole at 9, please re-use */
242 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
243 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
244 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
245 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
246 #define IEEE80211_STA_TKIP_WEP_USED BIT(14)
247 #define IEEE80211_STA_CSA_RECEIVED BIT(15)
248 #define IEEE80211_STA_MFP_ENABLED BIT(16)
249 #define IEEE80211_STA_EXT_SME BIT(17)
250 /* flags for MLME request */
251 #define IEEE80211_STA_REQ_SCAN 0
252 #define IEEE80211_STA_REQ_DIRECT_PROBE 1
253 #define IEEE80211_STA_REQ_AUTH 2
254 #define IEEE80211_STA_REQ_RUN 3
256 /* bitfield of allowed auth algs */
257 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
258 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
259 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
260 #define IEEE80211_AUTH_ALG_FT BIT(3)
262 struct ieee80211_if_managed {
263 struct timer_list timer;
264 struct timer_list chswitch_timer;
265 struct work_struct work;
266 struct work_struct chswitch_work;
267 struct work_struct beacon_loss_work;
269 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
271 u8 ssid[IEEE80211_MAX_SSID_LEN];
275 IEEE80211_STA_MLME_DISABLED,
276 IEEE80211_STA_MLME_DIRECT_PROBE,
277 IEEE80211_STA_MLME_AUTHENTICATE,
278 IEEE80211_STA_MLME_ASSOCIATE,
279 IEEE80211_STA_MLME_ASSOCIATED,
284 u8 *extra_ie; /* to be added to the end of AssocReq */
287 /* The last AssocReq/Resp IEs */
288 u8 *assocreq_ies, *assocresp_ies;
289 size_t assocreq_ies_len, assocresp_ies_len;
291 struct sk_buff_head skb_queue;
293 int assoc_scan_tries; /* number of scans done pre-association */
294 int direct_probe_tries; /* retries for direct probes */
295 int auth_tries; /* retries for auth req */
296 int assoc_tries; /* retries for assoc req */
298 bool powersave; /* powersave requested for this iface */
300 unsigned long request;
302 unsigned long last_probe;
303 unsigned long last_beacon;
307 unsigned int auth_algs; /* bitfield of allowed auth algs */
308 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
309 int auth_transaction;
314 IEEE80211_MFP_DISABLED,
315 IEEE80211_MFP_OPTIONAL,
316 IEEE80211_MFP_REQUIRED
317 } mfp; /* management frame protection */
319 int wmm_last_param_set;
321 /* Extra IE data for management frames */
323 size_t sme_auth_ie_len;
326 enum ieee80211_ibss_flags {
327 IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
328 IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
329 IEEE80211_IBSS_BSSID_SET = BIT(2),
330 IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
331 IEEE80211_IBSS_SSID_SET = BIT(4),
334 enum ieee80211_ibss_request {
335 IEEE80211_IBSS_REQ_RUN = 0,
338 struct ieee80211_if_ibss {
339 struct timer_list timer;
340 struct work_struct work;
342 struct sk_buff_head skb_queue;
344 u8 ssid[IEEE80211_MAX_SSID_LEN];
351 unsigned long request;
353 unsigned long ibss_join_req;
354 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
357 IEEE80211_IBSS_MLME_SEARCH,
358 IEEE80211_IBSS_MLME_JOINED,
362 struct ieee80211_if_mesh {
363 struct work_struct work;
364 struct timer_list housekeeping_timer;
365 struct timer_list mesh_path_timer;
366 struct sk_buff_head skb_queue;
370 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
372 /* Active Path Selection Protocol Identifier */
374 /* Active Path Selection Metric Identifier */
376 /* Congestion Control Mode Identifier */
378 /* Local mesh Destination Sequence Number */
380 /* Last used PREQ ID */
383 /* Timestamp of last DSN update */
384 unsigned long last_dsn_update;
385 /* Timestamp of last DSN sent */
386 unsigned long last_preq;
387 struct mesh_rmc *rmc;
388 spinlock_t mesh_preq_queue_lock;
389 struct mesh_preq_queue preq_queue;
391 struct mesh_stats mshstats;
392 struct mesh_config mshcfg;
394 bool accepting_plinks;
397 #ifdef CONFIG_MAC80211_MESH
398 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
399 do { (msh)->mshstats.name++; } while (0)
401 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
406 * enum ieee80211_sub_if_data_flags - virtual interface flags
408 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
409 * @IEEE80211_SDATA_PROMISC: interface is promisc
410 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
411 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
412 * associated stations and deliver multicast frames both
413 * back to wireless media and to the local net stack.
415 enum ieee80211_sub_if_data_flags {
416 IEEE80211_SDATA_ALLMULTI = BIT(0),
417 IEEE80211_SDATA_PROMISC = BIT(1),
418 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
419 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
422 struct ieee80211_sub_if_data {
423 struct list_head list;
425 struct wireless_dev wdev;
428 struct list_head key_list;
430 struct net_device *dev;
431 struct ieee80211_local *local;
435 int drop_unencrypted;
437 /* Fragment table for host-based reassembly */
438 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
439 unsigned int fragment_next;
441 #define NUM_DEFAULT_KEYS 4
442 #define NUM_DEFAULT_MGMT_KEYS 2
443 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
444 struct ieee80211_key *default_key;
445 struct ieee80211_key *default_mgmt_key;
450 * AP this belongs to: self in AP mode and
451 * corresponding AP in VLAN mode, NULL for
452 * all others (might be needed later in IBSS)
454 struct ieee80211_if_ap *bss;
456 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
457 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
460 struct ieee80211_if_ap ap;
461 struct ieee80211_if_wds wds;
462 struct ieee80211_if_vlan vlan;
463 struct ieee80211_if_managed mgd;
464 struct ieee80211_if_ibss ibss;
465 #ifdef CONFIG_MAC80211_MESH
466 struct ieee80211_if_mesh mesh;
471 #ifdef CONFIG_MAC80211_DEBUGFS
472 struct dentry *debugfsdir;
475 struct dentry *drop_unencrypted;
476 struct dentry *state;
477 struct dentry *bssid;
478 struct dentry *prev_bssid;
479 struct dentry *ssid_len;
481 struct dentry *ap_capab;
482 struct dentry *capab;
483 struct dentry *extra_ie_len;
484 struct dentry *auth_tries;
485 struct dentry *assoc_tries;
486 struct dentry *auth_algs;
487 struct dentry *auth_alg;
488 struct dentry *auth_transaction;
489 struct dentry *flags;
490 struct dentry *force_unicast_rateidx;
491 struct dentry *max_ratectrl_rateidx;
494 struct dentry *drop_unencrypted;
495 struct dentry *num_sta_ps;
496 struct dentry *dtim_count;
497 struct dentry *force_unicast_rateidx;
498 struct dentry *max_ratectrl_rateidx;
499 struct dentry *num_buffered_multicast;
502 struct dentry *drop_unencrypted;
504 struct dentry *force_unicast_rateidx;
505 struct dentry *max_ratectrl_rateidx;
508 struct dentry *drop_unencrypted;
509 struct dentry *force_unicast_rateidx;
510 struct dentry *max_ratectrl_rateidx;
517 struct dentry *default_key;
518 struct dentry *default_mgmt_key;
521 #ifdef CONFIG_MAC80211_MESH
522 struct dentry *mesh_stats_dir;
524 struct dentry *fwded_frames;
525 struct dentry *dropped_frames_ttl;
526 struct dentry *dropped_frames_no_route;
527 struct dentry *estab_plinks;
528 struct timer_list mesh_path_timer;
531 struct dentry *mesh_config_dir;
533 struct dentry *dot11MeshRetryTimeout;
534 struct dentry *dot11MeshConfirmTimeout;
535 struct dentry *dot11MeshHoldingTimeout;
536 struct dentry *dot11MeshMaxRetries;
537 struct dentry *dot11MeshTTL;
538 struct dentry *auto_open_plinks;
539 struct dentry *dot11MeshMaxPeerLinks;
540 struct dentry *dot11MeshHWMPactivePathTimeout;
541 struct dentry *dot11MeshHWMPpreqMinInterval;
542 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
543 struct dentry *dot11MeshHWMPmaxPREQretries;
544 struct dentry *path_refresh_time;
545 struct dentry *min_discovery_timeout;
550 /* must be last, dynamically sized area in this! */
551 struct ieee80211_vif vif;
555 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
557 return container_of(p, struct ieee80211_sub_if_data, vif);
561 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
562 u8 mesh_id_len, u8 *mesh_id)
564 #ifdef CONFIG_MAC80211_MESH
565 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
566 ifmsh->mesh_id_len = mesh_id_len;
567 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
574 IEEE80211_RX_MSG = 1,
575 IEEE80211_TX_STATUS_MSG = 2,
576 IEEE80211_DELBA_MSG = 3,
577 IEEE80211_ADDBA_MSG = 4,
580 enum queue_stop_reason {
581 IEEE80211_QUEUE_STOP_REASON_DRIVER,
582 IEEE80211_QUEUE_STOP_REASON_PS,
583 IEEE80211_QUEUE_STOP_REASON_CSA,
584 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
585 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
586 IEEE80211_QUEUE_STOP_REASON_PENDING,
589 struct ieee80211_master_priv {
590 struct ieee80211_local *local;
593 struct ieee80211_local {
594 /* embed the driver visible part.
595 * don't cast (use the static inlines below), but we keep
596 * it first anyway so they become a no-op */
597 struct ieee80211_hw hw;
599 const struct ieee80211_ops *ops;
601 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
602 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
603 spinlock_t queue_stop_reason_lock;
605 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
607 int monitors, cooked_mntrs;
608 /* number of interfaces with corresponding FIF_ flags */
609 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
610 unsigned int filter_flags; /* FIF_* */
611 struct iw_statistics wstats;
612 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
613 int tx_headroom; /* required headroom for hardware/radiotap */
615 /* Tasklet and skb queue to process calls from IRQ mode. All frames
616 * added to skb_queue will be processed, but frames in
617 * skb_queue_unreliable may be dropped if the total length of these
618 * queues increases over the limit. */
619 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
620 struct tasklet_struct tasklet;
621 struct sk_buff_head skb_queue;
622 struct sk_buff_head skb_queue_unreliable;
626 * The lock only protects the list, hash, timer and counter
627 * against manipulation, reads are done in RCU. Additionally,
628 * the lock protects each BSS's TIM bitmap.
631 unsigned long num_sta;
632 struct list_head sta_list;
633 struct list_head sta_flush_list;
634 struct work_struct sta_flush_work;
635 struct sta_info *sta_hash[STA_HASH_SIZE];
636 struct timer_list sta_cleanup;
638 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
639 struct tasklet_struct tx_pending_tasklet;
642 * This lock is used to prevent concurrent A-MPDU
643 * session start/stop processing, this thus also
644 * synchronises the ->ampdu_action() callback to
645 * drivers and limits it to one at a time.
647 spinlock_t ampdu_lock;
649 /* number of interfaces with corresponding IFF_ flags */
650 atomic_t iff_allmultis, iff_promiscs;
652 struct rate_control_ref *rate_ctrl;
655 int fragmentation_threshold;
657 struct crypto_blkcipher *wep_tx_tfm;
658 struct crypto_blkcipher *wep_rx_tfm;
662 struct list_head interfaces;
663 struct mutex iflist_mtx;
666 * Key lock, protects sdata's key_list and sta_info's
667 * key pointers (write access, they're RCU.)
672 /* Scanning and BSS list */
673 bool sw_scanning, hw_scanning;
674 struct cfg80211_ssid scan_ssid;
675 struct cfg80211_scan_request int_scan_req;
676 struct cfg80211_scan_request *scan_req;
677 struct ieee80211_channel *scan_channel;
680 int scan_channel_idx;
683 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
684 unsigned long last_scan_completed;
685 struct delayed_work scan_work;
686 struct ieee80211_sub_if_data *scan_sdata;
687 enum nl80211_channel_type oper_channel_type;
688 struct ieee80211_channel *oper_channel, *csa_channel;
691 /* dot11CountersTable */
692 u32 dot11TransmittedFragmentCount;
693 u32 dot11MulticastTransmittedFrameCount;
694 u32 dot11FailedCount;
696 u32 dot11MultipleRetryCount;
697 u32 dot11FrameDuplicateCount;
698 u32 dot11ReceivedFragmentCount;
699 u32 dot11MulticastReceivedFrameCount;
700 u32 dot11TransmittedFrameCount;
702 #ifdef CONFIG_MAC80211_LEDS
703 int tx_led_counter, rx_led_counter;
704 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
705 char tx_led_name[32], rx_led_name[32],
706 assoc_led_name[32], radio_led_name[32];
709 #ifdef CONFIG_MAC80211_DEBUGFS
710 struct work_struct sta_debugfs_add;
713 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
714 /* TX/RX handler statistics */
715 unsigned int tx_handlers_drop;
716 unsigned int tx_handlers_queued;
717 unsigned int tx_handlers_drop_unencrypted;
718 unsigned int tx_handlers_drop_fragment;
719 unsigned int tx_handlers_drop_wep;
720 unsigned int tx_handlers_drop_not_assoc;
721 unsigned int tx_handlers_drop_unauth_port;
722 unsigned int rx_handlers_drop;
723 unsigned int rx_handlers_queued;
724 unsigned int rx_handlers_drop_nullfunc;
725 unsigned int rx_handlers_drop_defrag;
726 unsigned int rx_handlers_drop_short;
727 unsigned int rx_handlers_drop_passive_scan;
728 unsigned int tx_expand_skb_head;
729 unsigned int tx_expand_skb_head_cloned;
730 unsigned int rx_expand_skb_head;
731 unsigned int rx_expand_skb_head2;
732 unsigned int rx_handlers_fragments;
733 unsigned int tx_status_drop;
734 #define I802_DEBUG_INC(c) (c)++
735 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
736 #define I802_DEBUG_INC(c) do { } while (0)
737 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
740 int total_ps_buffered; /* total number of all buffered unicast and
741 * multicast packets for power saving stations
743 int wifi_wme_noack_test;
744 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
748 * PS can only be enabled when we have exactly one managed
749 * interface (and monitors) in PS, this then points there.
751 struct ieee80211_sub_if_data *ps_sdata;
752 struct work_struct dynamic_ps_enable_work;
753 struct work_struct dynamic_ps_disable_work;
754 struct timer_list dynamic_ps_timer;
755 struct notifier_block network_latency_notifier;
757 int user_power_level; /* in dBm */
758 int power_constr_level; /* in dBm */
760 struct work_struct restart_work;
762 #ifdef CONFIG_MAC80211_DEBUGFS
763 struct local_debugfsdentries {
764 struct dentry *rcdir;
765 struct dentry *rcname;
766 struct dentry *frequency;
767 struct dentry *rts_threshold;
768 struct dentry *fragmentation_threshold;
769 struct dentry *short_retry_limit;
770 struct dentry *long_retry_limit;
771 struct dentry *total_ps_buffered;
772 struct dentry *wep_iv;
774 struct dentry *reset;
775 struct dentry *statistics;
776 struct local_debugfsdentries_statsdentries {
777 struct dentry *transmitted_fragment_count;
778 struct dentry *multicast_transmitted_frame_count;
779 struct dentry *failed_count;
780 struct dentry *retry_count;
781 struct dentry *multiple_retry_count;
782 struct dentry *frame_duplicate_count;
783 struct dentry *received_fragment_count;
784 struct dentry *multicast_received_frame_count;
785 struct dentry *transmitted_frame_count;
786 struct dentry *wep_undecryptable_count;
787 struct dentry *num_scans;
788 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
789 struct dentry *tx_handlers_drop;
790 struct dentry *tx_handlers_queued;
791 struct dentry *tx_handlers_drop_unencrypted;
792 struct dentry *tx_handlers_drop_fragment;
793 struct dentry *tx_handlers_drop_wep;
794 struct dentry *tx_handlers_drop_not_assoc;
795 struct dentry *tx_handlers_drop_unauth_port;
796 struct dentry *rx_handlers_drop;
797 struct dentry *rx_handlers_queued;
798 struct dentry *rx_handlers_drop_nullfunc;
799 struct dentry *rx_handlers_drop_defrag;
800 struct dentry *rx_handlers_drop_short;
801 struct dentry *rx_handlers_drop_passive_scan;
802 struct dentry *tx_expand_skb_head;
803 struct dentry *tx_expand_skb_head_cloned;
804 struct dentry *rx_expand_skb_head;
805 struct dentry *rx_expand_skb_head2;
806 struct dentry *rx_handlers_fragments;
807 struct dentry *tx_status_drop;
809 struct dentry *dot11ACKFailureCount;
810 struct dentry *dot11RTSFailureCount;
811 struct dentry *dot11FCSErrorCount;
812 struct dentry *dot11RTSSuccessCount;
814 struct dentry *stations;
820 static inline struct ieee80211_sub_if_data *
821 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
823 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
825 BUG_ON(!local || local->mdev == dev);
827 return netdev_priv(dev);
830 /* this struct represents 802.11n's RA/TID combination */
831 struct ieee80211_ra_tid {
836 /* Parsed Information Elements */
837 struct ieee802_11_elems {
841 /* pointers to IEs */
856 struct ieee80211_ht_cap *ht_cap_elem;
857 struct ieee80211_ht_info *ht_info_elem;
867 u8 *quiet_elem; /* first quite element */
870 /* length of them, respectively */
882 u8 ext_supp_rates_len;
891 u8 ch_switch_elem_len;
893 u8 pwr_constr_elem_len;
895 u8 num_of_quiet_elem; /* can be more the one */
899 static inline struct ieee80211_local *hw_to_local(
900 struct ieee80211_hw *hw)
902 return container_of(hw, struct ieee80211_local, hw);
905 static inline struct ieee80211_hw *local_to_hw(
906 struct ieee80211_local *local)
912 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
914 return compare_ether_addr(raddr, addr) == 0 ||
915 is_broadcast_ether_addr(raddr);
919 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
920 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
921 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
922 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
924 void ieee80211_configure_filter(struct ieee80211_local *local);
925 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
927 /* wireless extensions */
928 extern const struct iw_handler_def ieee80211_iw_handler_def;
931 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
932 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
934 struct ieee80211_rx_status *rx_status);
935 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
936 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
937 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
938 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
939 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
940 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
941 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
942 void ieee80211_send_pspoll(struct ieee80211_local *local,
943 struct ieee80211_sub_if_data *sdata);
944 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
945 int ieee80211_max_network_latency(struct notifier_block *nb,
946 unsigned long data, void *dummy);
949 int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
950 int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
951 int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
952 int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
953 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
954 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
956 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
957 struct ieee80211_rx_status *rx_status);
958 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
959 u8 *bssid, u8 *addr, u32 supp_rates);
961 /* scan/BSS handling */
962 void ieee80211_scan_work(struct work_struct *work);
963 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
964 struct cfg80211_scan_request *req);
965 int ieee80211_scan_results(struct ieee80211_local *local,
966 struct iw_request_info *info,
967 char *buf, size_t len);
969 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
971 struct ieee80211_rx_status *rx_status);
972 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
973 const char *ie, size_t len);
975 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
976 void ieee80211_scan_failed(struct ieee80211_local *local);
977 int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
978 struct cfg80211_scan_request *req);
979 struct ieee80211_bss *
980 ieee80211_bss_info_update(struct ieee80211_local *local,
981 struct ieee80211_rx_status *rx_status,
982 struct ieee80211_mgmt *mgmt,
984 struct ieee802_11_elems *elems,
985 struct ieee80211_channel *channel,
987 struct ieee80211_bss *
988 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
989 u8 *ssid, u8 ssid_len);
990 void ieee80211_rx_bss_put(struct ieee80211_local *local,
991 struct ieee80211_bss *bss);
992 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
993 int freq, u8 *ssid, u8 ssid_len);
995 /* interface handling */
996 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
997 struct net_device **new_dev, enum nl80211_iftype type,
998 struct vif_params *params);
999 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1000 enum nl80211_iftype type);
1001 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1002 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1005 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1006 void ieee80211_tx_pending(unsigned long data);
1007 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
1008 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1009 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1012 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1013 struct ieee80211_ht_cap *ht_cap_ie,
1014 struct ieee80211_sta_ht_cap *ht_cap);
1015 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1016 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1017 const u8 *da, u16 tid,
1018 u16 initiator, u16 reason_code);
1020 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1021 u16 tid, u16 initiator, u16 reason);
1022 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1023 u16 initiator, u16 reason);
1024 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1025 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1026 struct sta_info *sta,
1027 struct ieee80211_mgmt *mgmt, size_t len);
1028 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1029 struct sta_info *sta,
1030 struct ieee80211_mgmt *mgmt,
1032 void ieee80211_process_addba_request(struct ieee80211_local *local,
1033 struct sta_info *sta,
1034 struct ieee80211_mgmt *mgmt,
1037 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1038 enum ieee80211_back_parties initiator);
1040 /* Spectrum management */
1041 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1042 struct ieee80211_mgmt *mgmt,
1044 void ieee80211_chswitch_timer(unsigned long data);
1045 void ieee80211_chswitch_work(struct work_struct *work);
1046 void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1047 struct ieee80211_channel_sw_ie *sw_elem,
1048 struct ieee80211_bss *bss);
1049 void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1050 u16 capab_info, u8 *pwr_constr_elem,
1051 u8 pwr_constr_elem_len);
1053 /* Suspend/resume and hw reconfiguration */
1054 int ieee80211_reconfig(struct ieee80211_local *local);
1057 int __ieee80211_suspend(struct ieee80211_hw *hw);
1059 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1061 return ieee80211_reconfig(hw_to_local(hw));
1064 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1069 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1075 /* utility functions/constants */
1076 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1077 extern const unsigned char rfc1042_header[6];
1078 extern const unsigned char bridge_tunnel_header[6];
1079 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1080 enum nl80211_iftype type);
1081 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1082 int rate, int erp, int short_preamble);
1083 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1084 struct ieee80211_hdr *hdr, const u8 *tsc);
1085 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1086 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1088 void ieee802_11_parse_elems(u8 *start, size_t len,
1089 struct ieee802_11_elems *elems);
1090 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1091 struct ieee802_11_elems *elems,
1092 u64 filter, u32 crc);
1093 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
1094 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1095 enum ieee80211_band band);
1097 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1098 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1099 void ieee80211_dynamic_ps_timer(unsigned long data);
1100 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1101 struct ieee80211_sub_if_data *sdata,
1103 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1104 struct ieee80211_hdr *hdr);
1105 void ieee80211_beacon_loss_work(struct work_struct *work);
1107 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1108 enum queue_stop_reason reason);
1109 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1110 enum queue_stop_reason reason);
1111 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1112 enum queue_stop_reason reason);
1113 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1114 enum queue_stop_reason reason);
1116 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1117 u16 transaction, u16 auth_alg,
1118 u8 *extra, size_t extra_len,
1119 const u8 *bssid, int encrypt);
1120 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1121 const u8 *ie, size_t ie_len);
1122 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1123 const u8 *ssid, size_t ssid_len,
1124 const u8 *ie, size_t ie_len);
1126 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1127 const size_t supp_rates_len,
1128 const u8 *supp_rates);
1129 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1130 struct ieee802_11_elems *elems,
1131 enum ieee80211_band band);
1133 #ifdef CONFIG_MAC80211_NOINLINE
1134 #define debug_noinline noinline
1136 #define debug_noinline
1139 #endif /* IEEE80211_I_H */