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/mac80211.h>
31 struct ieee80211_local;
33 /* Maximum number of broadcast/multicast frames to buffer when some of the
34 * associated stations are using power saving. */
35 #define AP_MAX_BC_BUFFER 128
37 /* Maximum number of frames buffered to all STAs, including multicast frames.
38 * Note: increasing this limit increases the potential memory requirement. Each
39 * frame can be up to about 2 kB long. */
40 #define TOTAL_MAX_TX_BUFFER 512
42 /* Required encryption head and tailroom */
43 #define IEEE80211_ENCRYPT_HEADROOM 8
44 #define IEEE80211_ENCRYPT_TAILROOM 18
46 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
47 * reception of at least three fragmented frames. This limit can be increased
48 * by changing this define, at the cost of slower frame reassembly and
49 * increased memory use (about 2 kB of RAM per entry). */
50 #define IEEE80211_FRAGMENT_MAX 4
53 * Time after which we ignore scan results and no longer report/use
56 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
58 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
60 struct ieee80211_fragment_entry {
61 unsigned long first_frag_time;
63 unsigned int rx_queue;
64 unsigned int last_frag;
65 unsigned int extra_len;
66 struct sk_buff_head skb_list;
67 int ccmp; /* Whether fragments were encrypted with CCMP */
68 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
72 struct ieee80211_bss {
73 /* Yes, this is a hack */
74 struct cfg80211_bss cbss;
76 /* don't want to look up all the time */
78 u8 ssid[IEEE80211_MAX_SSID_LEN];
84 unsigned long last_probe_resp;
86 #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;
97 * During assocation, we save an ERP value from a probe response so
98 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
100 * otherwise, you probably don't want to use them.
106 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
108 #ifdef CONFIG_MAC80211_MESH
109 return bss->mesh_cfg;
114 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
116 #ifdef CONFIG_MAC80211_MESH
122 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
124 #ifdef CONFIG_MAC80211_MESH
125 return bss->mesh_id_len;
131 typedef unsigned __bitwise__ ieee80211_tx_result;
132 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
133 #define TX_DROP ((__force ieee80211_tx_result) 1u)
134 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
136 #define IEEE80211_TX_FRAGMENTED BIT(0)
137 #define IEEE80211_TX_UNICAST BIT(1)
138 #define IEEE80211_TX_PS_BUFFERED BIT(2)
140 struct ieee80211_tx_data {
142 struct net_device *dev;
143 struct ieee80211_local *local;
144 struct ieee80211_sub_if_data *sdata;
145 struct sta_info *sta;
146 struct ieee80211_key *key;
148 struct ieee80211_channel *channel;
155 typedef unsigned __bitwise__ ieee80211_rx_result;
156 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
157 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
158 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
159 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
161 #define IEEE80211_RX_IN_SCAN BIT(0)
162 /* frame is destined to interface currently processed (incl. multicast frames) */
163 #define IEEE80211_RX_RA_MATCH BIT(1)
164 #define IEEE80211_RX_AMSDU BIT(2)
165 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
166 #define IEEE80211_RX_FRAGMENTED BIT(4)
168 struct ieee80211_rx_data {
170 struct net_device *dev;
171 struct ieee80211_local *local;
172 struct ieee80211_sub_if_data *sdata;
173 struct sta_info *sta;
174 struct ieee80211_key *key;
175 struct ieee80211_rx_status *status;
176 struct ieee80211_rate *rate;
179 int sent_ps_buffered;
187 int head_len, tail_len;
191 struct ieee80211_if_ap {
192 struct beacon_data *beacon;
194 struct list_head vlans;
196 /* yes, this looks ugly, but guarantees that we can later use
198 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
199 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
200 struct sk_buff_head ps_bc_buf;
201 atomic_t num_sta_ps; /* number of stations in PS mode */
205 struct ieee80211_if_wds {
206 struct sta_info *sta;
207 u8 remote_addr[ETH_ALEN];
210 struct ieee80211_if_vlan {
211 struct list_head list;
215 __u32 fwded_frames; /* Mesh forwarded frames */
216 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
217 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
218 atomic_t estab_plinks;
221 #define PREQ_Q_F_START 0x1
222 #define PREQ_Q_F_REFRESH 0x2
223 struct mesh_preq_queue {
224 struct list_head list;
229 enum ieee80211_mgd_state {
230 IEEE80211_MGD_STATE_IDLE,
231 IEEE80211_MGD_STATE_PROBE,
232 IEEE80211_MGD_STATE_AUTH,
233 IEEE80211_MGD_STATE_ASSOC,
236 struct ieee80211_mgd_work {
237 struct list_head list;
238 struct ieee80211_bss *bss;
240 u8 prev_bssid[ETH_ALEN];
241 u8 ssid[IEEE80211_MAX_SSID_LEN];
243 unsigned long timeout;
244 enum ieee80211_mgd_state state;
245 u16 auth_alg, auth_transaction;
249 u8 key[WLAN_KEY_LEN_WEP104];
253 u8 ie[0]; /* for auth or assoc frame, not probe */
256 /* flags used in struct ieee80211_if_managed.flags */
257 enum ieee80211_sta_flags {
258 IEEE80211_STA_BEACON_POLL = BIT(0),
259 IEEE80211_STA_CONNECTION_POLL = BIT(1),
260 IEEE80211_STA_CONTROL_PORT = BIT(2),
261 IEEE80211_STA_WMM_ENABLED = BIT(3),
262 IEEE80211_STA_DISABLE_11N = BIT(4),
263 IEEE80211_STA_CSA_RECEIVED = BIT(5),
264 IEEE80211_STA_MFP_ENABLED = BIT(6),
267 /* flags for MLME request */
268 enum ieee80211_sta_request {
269 IEEE80211_STA_REQ_SCAN,
272 struct ieee80211_if_managed {
273 struct timer_list timer;
274 struct timer_list conn_mon_timer;
275 struct timer_list bcn_mon_timer;
276 struct timer_list chswitch_timer;
277 struct work_struct work;
278 struct work_struct monitor_work;
279 struct work_struct chswitch_work;
280 struct work_struct beacon_loss_work;
282 unsigned long probe_timeout;
283 int probe_send_count;
286 struct ieee80211_bss *associated;
287 struct ieee80211_mgd_work *old_associate_work;
288 struct list_head work_list;
295 struct sk_buff_head skb_queue;
297 unsigned long timers_running; /* used for quiesce/restart */
298 bool powersave; /* powersave requested for this iface */
300 unsigned long request;
307 IEEE80211_MFP_DISABLED,
308 IEEE80211_MFP_OPTIONAL,
309 IEEE80211_MFP_REQUIRED
310 } mfp; /* management frame protection */
312 int wmm_last_param_set;
315 enum ieee80211_ibss_request {
316 IEEE80211_IBSS_REQ_RUN = 0,
319 struct ieee80211_if_ibss {
320 struct timer_list timer;
321 struct work_struct work;
323 struct sk_buff_head skb_queue;
325 unsigned long request;
326 unsigned long last_scan_completed;
335 u8 ssid[IEEE80211_MAX_SSID_LEN];
338 struct ieee80211_channel *channel;
340 unsigned long ibss_join_req;
341 /* probe response/beacon for IBSS */
342 struct sk_buff *presp, *skb;
345 IEEE80211_IBSS_MLME_SEARCH,
346 IEEE80211_IBSS_MLME_JOINED,
350 struct ieee80211_if_mesh {
351 struct work_struct work;
352 struct timer_list housekeeping_timer;
353 struct timer_list mesh_path_timer;
354 struct sk_buff_head skb_queue;
356 unsigned long timers_running;
358 unsigned long wrkq_flags;
360 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
362 /* Active Path Selection Protocol Identifier */
364 /* Active Path Selection Metric Identifier */
366 /* Congestion Control Mode Identifier */
368 /* Local mesh Destination Sequence Number */
370 /* Last used PREQ ID */
373 /* Timestamp of last DSN update */
374 unsigned long last_dsn_update;
375 /* Timestamp of last DSN sent */
376 unsigned long last_preq;
377 struct mesh_rmc *rmc;
378 spinlock_t mesh_preq_queue_lock;
379 struct mesh_preq_queue preq_queue;
381 struct mesh_stats mshstats;
382 struct mesh_config mshcfg;
384 bool accepting_plinks;
387 #ifdef CONFIG_MAC80211_MESH
388 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
389 do { (msh)->mshstats.name++; } while (0)
391 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
396 * enum ieee80211_sub_if_data_flags - virtual interface flags
398 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
399 * @IEEE80211_SDATA_PROMISC: interface is promisc
400 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
401 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
402 * associated stations and deliver multicast frames both
403 * back to wireless media and to the local net stack.
405 enum ieee80211_sub_if_data_flags {
406 IEEE80211_SDATA_ALLMULTI = BIT(0),
407 IEEE80211_SDATA_PROMISC = BIT(1),
408 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
409 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
412 struct ieee80211_sub_if_data {
413 struct list_head list;
415 struct wireless_dev wdev;
418 struct list_head key_list;
420 struct net_device *dev;
421 struct ieee80211_local *local;
425 int drop_unencrypted;
428 * keep track of whether the HT opmode (stored in
429 * vif.bss_info.ht_operation_mode) is valid.
431 bool ht_opmode_valid;
433 /* Fragment table for host-based reassembly */
434 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
435 unsigned int fragment_next;
437 #define NUM_DEFAULT_KEYS 4
438 #define NUM_DEFAULT_MGMT_KEYS 2
439 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
440 struct ieee80211_key *default_key;
441 struct ieee80211_key *default_mgmt_key;
446 * AP this belongs to: self in AP mode and
447 * corresponding AP in VLAN mode, NULL for
448 * all others (might be needed later in IBSS)
450 struct ieee80211_if_ap *bss;
452 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
453 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
456 struct ieee80211_if_ap ap;
457 struct ieee80211_if_wds wds;
458 struct ieee80211_if_vlan vlan;
459 struct ieee80211_if_managed mgd;
460 struct ieee80211_if_ibss ibss;
461 #ifdef CONFIG_MAC80211_MESH
462 struct ieee80211_if_mesh mesh;
467 #ifdef CONFIG_MAC80211_DEBUGFS
468 struct dentry *debugfsdir;
471 struct dentry *drop_unencrypted;
472 struct dentry *bssid;
474 struct dentry *capab;
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 *force_unicast_rateidx;
483 struct dentry *max_ratectrl_rateidx;
484 struct dentry *num_buffered_multicast;
487 struct dentry *drop_unencrypted;
489 struct dentry *force_unicast_rateidx;
490 struct dentry *max_ratectrl_rateidx;
493 struct dentry *drop_unencrypted;
494 struct dentry *force_unicast_rateidx;
495 struct dentry *max_ratectrl_rateidx;
502 struct dentry *default_key;
503 struct dentry *default_mgmt_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_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
547 u8 mesh_id_len, u8 *mesh_id)
549 #ifdef CONFIG_MAC80211_MESH
550 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
551 ifmsh->mesh_id_len = mesh_id_len;
552 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
559 IEEE80211_RX_MSG = 1,
560 IEEE80211_TX_STATUS_MSG = 2,
561 IEEE80211_DELBA_MSG = 3,
562 IEEE80211_ADDBA_MSG = 4,
565 enum queue_stop_reason {
566 IEEE80211_QUEUE_STOP_REASON_DRIVER,
567 IEEE80211_QUEUE_STOP_REASON_PS,
568 IEEE80211_QUEUE_STOP_REASON_CSA,
569 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
570 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
571 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
575 * mac80211 scan flags - currently active scan mode
577 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
578 * well be on the operating channel
579 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
580 * determine if we are on the operating channel or not
581 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
582 * gets only set in conjunction with SCAN_SW_SCANNING
591 * enum mac80211_scan_state - scan state machine states
593 * @SCAN_DECISION: Main entry point to the scan state machine, this state
594 * determines if we should keep on scanning or switch back to the
596 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
597 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
598 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
599 * about us leaving the channel and stop all associated STA interfaces
600 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
601 * AP about us being back and restart all associated STA interfaces
603 enum mac80211_scan_state {
607 SCAN_LEAVE_OPER_CHANNEL,
608 SCAN_ENTER_OPER_CHANNEL,
611 struct ieee80211_local {
612 /* embed the driver visible part.
613 * don't cast (use the static inlines below), but we keep
614 * it first anyway so they become a no-op */
615 struct ieee80211_hw hw;
617 const struct ieee80211_ops *ops;
620 * private workqueue to mac80211. mac80211 makes this accessible
621 * via ieee80211_queue_work()
623 struct workqueue_struct *workqueue;
625 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
626 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
627 spinlock_t queue_stop_reason_lock;
630 int monitors, cooked_mntrs;
631 /* number of interfaces with corresponding FIF_ flags */
632 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
633 unsigned int filter_flags; /* FIF_* */
634 struct iw_statistics wstats;
636 /* protects the aggregated multicast list and filter calls */
637 spinlock_t filter_lock;
639 /* used for uploading changed mc list */
640 struct work_struct reconfig_filter;
642 /* aggregated multicast list */
643 struct dev_addr_list *mc_list;
646 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
649 * suspended is true if we finished all the suspend _and_ we have
650 * not yet come up from resume. This is to be used by mac80211
651 * to ensure driver sanity during suspend and mac80211's own
652 * sanity. It can eventually be used for WoW as well.
657 * quiescing is true during the suspend process _only_ to
658 * ease timer cancelling etc.
662 int tx_headroom; /* required headroom for hardware/radiotap */
664 /* Tasklet and skb queue to process calls from IRQ mode. All frames
665 * added to skb_queue will be processed, but frames in
666 * skb_queue_unreliable may be dropped if the total length of these
667 * queues increases over the limit. */
668 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
669 struct tasklet_struct tasklet;
670 struct sk_buff_head skb_queue;
671 struct sk_buff_head skb_queue_unreliable;
675 * The lock only protects the list, hash, timer and counter
676 * against manipulation, reads are done in RCU. Additionally,
677 * the lock protects each BSS's TIM bitmap.
680 unsigned long num_sta;
681 struct list_head sta_list;
682 struct sta_info *sta_hash[STA_HASH_SIZE];
683 struct timer_list sta_cleanup;
686 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
687 struct tasklet_struct tx_pending_tasklet;
690 * This lock is used to prevent concurrent A-MPDU
691 * session start/stop processing, this thus also
692 * synchronises the ->ampdu_action() callback to
693 * drivers and limits it to one at a time.
695 spinlock_t ampdu_lock;
697 /* number of interfaces with corresponding IFF_ flags */
698 atomic_t iff_allmultis, iff_promiscs;
700 struct rate_control_ref *rate_ctrl;
702 struct crypto_blkcipher *wep_tx_tfm;
703 struct crypto_blkcipher *wep_rx_tfm;
707 struct list_head interfaces;
708 struct mutex iflist_mtx;
711 * Key lock, protects sdata's key_list and sta_info's
712 * key pointers (write access, they're RCU.)
717 /* Scanning and BSS list */
718 struct mutex scan_mtx;
719 unsigned long scanning;
720 struct cfg80211_ssid scan_ssid;
721 struct cfg80211_scan_request *int_scan_req;
722 struct cfg80211_scan_request *scan_req;
723 struct ieee80211_channel *scan_channel;
726 int scan_channel_idx;
729 enum mac80211_scan_state next_scan_state;
730 struct delayed_work scan_work;
731 struct ieee80211_sub_if_data *scan_sdata;
732 enum nl80211_channel_type oper_channel_type;
733 struct ieee80211_channel *oper_channel, *csa_channel;
736 /* dot11CountersTable */
737 u32 dot11TransmittedFragmentCount;
738 u32 dot11MulticastTransmittedFrameCount;
739 u32 dot11FailedCount;
741 u32 dot11MultipleRetryCount;
742 u32 dot11FrameDuplicateCount;
743 u32 dot11ReceivedFragmentCount;
744 u32 dot11MulticastReceivedFrameCount;
745 u32 dot11TransmittedFrameCount;
747 #ifdef CONFIG_MAC80211_LEDS
748 int tx_led_counter, rx_led_counter;
749 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
750 char tx_led_name[32], rx_led_name[32],
751 assoc_led_name[32], radio_led_name[32];
754 #ifdef CONFIG_MAC80211_DEBUGFS
755 struct work_struct sta_debugfs_add;
758 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
759 /* TX/RX handler statistics */
760 unsigned int tx_handlers_drop;
761 unsigned int tx_handlers_queued;
762 unsigned int tx_handlers_drop_unencrypted;
763 unsigned int tx_handlers_drop_fragment;
764 unsigned int tx_handlers_drop_wep;
765 unsigned int tx_handlers_drop_not_assoc;
766 unsigned int tx_handlers_drop_unauth_port;
767 unsigned int rx_handlers_drop;
768 unsigned int rx_handlers_queued;
769 unsigned int rx_handlers_drop_nullfunc;
770 unsigned int rx_handlers_drop_defrag;
771 unsigned int rx_handlers_drop_short;
772 unsigned int rx_handlers_drop_passive_scan;
773 unsigned int tx_expand_skb_head;
774 unsigned int tx_expand_skb_head_cloned;
775 unsigned int rx_expand_skb_head;
776 unsigned int rx_expand_skb_head2;
777 unsigned int rx_handlers_fragments;
778 unsigned int tx_status_drop;
779 #define I802_DEBUG_INC(c) (c)++
780 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
781 #define I802_DEBUG_INC(c) do { } while (0)
782 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
785 int total_ps_buffered; /* total number of all buffered unicast and
786 * multicast packets for power saving stations
788 int wifi_wme_noack_test;
789 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
793 * PS can only be enabled when we have exactly one managed
794 * interface (and monitors) in PS, this then points there.
796 struct ieee80211_sub_if_data *ps_sdata;
797 struct work_struct dynamic_ps_enable_work;
798 struct work_struct dynamic_ps_disable_work;
799 struct timer_list dynamic_ps_timer;
800 struct notifier_block network_latency_notifier;
802 int user_power_level; /* in dBm */
803 int power_constr_level; /* in dBm */
805 struct work_struct restart_work;
807 #ifdef CONFIG_MAC80211_DEBUGFS
808 struct local_debugfsdentries {
809 struct dentry *rcdir;
810 struct dentry *rcname;
811 struct dentry *frequency;
812 struct dentry *total_ps_buffered;
813 struct dentry *wep_iv;
815 struct dentry *queues;
816 struct dentry *reset;
817 struct dentry *noack;
818 struct dentry *statistics;
819 struct local_debugfsdentries_statsdentries {
820 struct dentry *transmitted_fragment_count;
821 struct dentry *multicast_transmitted_frame_count;
822 struct dentry *failed_count;
823 struct dentry *retry_count;
824 struct dentry *multiple_retry_count;
825 struct dentry *frame_duplicate_count;
826 struct dentry *received_fragment_count;
827 struct dentry *multicast_received_frame_count;
828 struct dentry *transmitted_frame_count;
829 struct dentry *wep_undecryptable_count;
830 struct dentry *num_scans;
831 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
832 struct dentry *tx_handlers_drop;
833 struct dentry *tx_handlers_queued;
834 struct dentry *tx_handlers_drop_unencrypted;
835 struct dentry *tx_handlers_drop_fragment;
836 struct dentry *tx_handlers_drop_wep;
837 struct dentry *tx_handlers_drop_not_assoc;
838 struct dentry *tx_handlers_drop_unauth_port;
839 struct dentry *rx_handlers_drop;
840 struct dentry *rx_handlers_queued;
841 struct dentry *rx_handlers_drop_nullfunc;
842 struct dentry *rx_handlers_drop_defrag;
843 struct dentry *rx_handlers_drop_short;
844 struct dentry *rx_handlers_drop_passive_scan;
845 struct dentry *tx_expand_skb_head;
846 struct dentry *tx_expand_skb_head_cloned;
847 struct dentry *rx_expand_skb_head;
848 struct dentry *rx_expand_skb_head2;
849 struct dentry *rx_handlers_fragments;
850 struct dentry *tx_status_drop;
852 struct dentry *dot11ACKFailureCount;
853 struct dentry *dot11RTSFailureCount;
854 struct dentry *dot11FCSErrorCount;
855 struct dentry *dot11RTSSuccessCount;
857 struct dentry *stations;
863 static inline struct ieee80211_sub_if_data *
864 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
866 return netdev_priv(dev);
869 /* this struct represents 802.11n's RA/TID combination */
870 struct ieee80211_ra_tid {
875 /* Parsed Information Elements */
876 struct ieee802_11_elems {
880 /* pointers to IEs */
886 struct ieee80211_tim_ie *tim;
895 struct ieee80211_ht_cap *ht_cap_elem;
896 struct ieee80211_ht_info *ht_info_elem;
906 u8 *quiet_elem; /* first quite element */
909 /* length of them, respectively */
921 u8 ext_supp_rates_len;
930 u8 ch_switch_elem_len;
932 u8 pwr_constr_elem_len;
934 u8 num_of_quiet_elem; /* can be more the one */
938 static inline struct ieee80211_local *hw_to_local(
939 struct ieee80211_hw *hw)
941 return container_of(hw, struct ieee80211_local, hw);
944 static inline struct ieee80211_hw *local_to_hw(
945 struct ieee80211_local *local)
951 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
953 return compare_ether_addr(raddr, addr) == 0 ||
954 is_broadcast_ether_addr(raddr);
958 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
959 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
960 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
962 void ieee80211_configure_filter(struct ieee80211_local *local);
963 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
966 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
967 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
968 struct cfg80211_auth_request *req);
969 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
970 struct cfg80211_assoc_request *req);
971 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
972 struct cfg80211_deauth_request *req,
974 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
975 struct cfg80211_disassoc_request *req,
977 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
978 struct sk_buff *skb);
979 void ieee80211_send_pspoll(struct ieee80211_local *local,
980 struct ieee80211_sub_if_data *sdata);
981 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
982 int ieee80211_max_network_latency(struct notifier_block *nb,
983 unsigned long data, void *dummy);
984 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
985 struct ieee80211_channel_sw_ie *sw_elem,
986 struct ieee80211_bss *bss);
987 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
988 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
991 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
992 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
994 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
995 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
996 u8 *bssid, u8 *addr, u32 supp_rates);
997 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
998 struct cfg80211_ibss_params *params);
999 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1000 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1001 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1003 /* scan/BSS handling */
1004 void ieee80211_scan_work(struct work_struct *work);
1005 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1006 const u8 *ssid, u8 ssid_len);
1007 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1008 struct cfg80211_scan_request *req);
1009 void ieee80211_scan_cancel(struct ieee80211_local *local);
1011 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1013 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1014 struct ieee80211_bss *
1015 ieee80211_bss_info_update(struct ieee80211_local *local,
1016 struct ieee80211_rx_status *rx_status,
1017 struct ieee80211_mgmt *mgmt,
1019 struct ieee802_11_elems *elems,
1020 struct ieee80211_channel *channel,
1022 struct ieee80211_bss *
1023 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1024 u8 *ssid, u8 ssid_len);
1025 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1026 struct ieee80211_bss *bss);
1028 /* interface handling */
1029 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1030 struct net_device **new_dev, enum nl80211_iftype type,
1031 struct vif_params *params);
1032 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1033 enum nl80211_iftype type);
1034 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1035 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1036 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1037 void ieee80211_recalc_idle(struct ieee80211_local *local);
1040 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1041 void ieee80211_tx_pending(unsigned long data);
1042 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1043 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1046 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1047 struct ieee80211_ht_cap *ht_cap_ie,
1048 struct ieee80211_sta_ht_cap *ht_cap);
1049 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1050 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1051 const u8 *da, u16 tid,
1052 u16 initiator, u16 reason_code);
1054 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1055 u16 tid, u16 initiator, u16 reason);
1056 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1057 u16 initiator, u16 reason);
1058 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1059 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1060 struct sta_info *sta,
1061 struct ieee80211_mgmt *mgmt, size_t len);
1062 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1063 struct sta_info *sta,
1064 struct ieee80211_mgmt *mgmt,
1066 void ieee80211_process_addba_request(struct ieee80211_local *local,
1067 struct sta_info *sta,
1068 struct ieee80211_mgmt *mgmt,
1071 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1072 enum ieee80211_back_parties initiator);
1074 /* Spectrum management */
1075 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1076 struct ieee80211_mgmt *mgmt,
1079 /* Suspend/resume and hw reconfiguration */
1080 int ieee80211_reconfig(struct ieee80211_local *local);
1083 int __ieee80211_suspend(struct ieee80211_hw *hw);
1085 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1087 return ieee80211_reconfig(hw_to_local(hw));
1090 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1095 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1101 /* utility functions/constants */
1102 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1103 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1104 enum nl80211_iftype type);
1105 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1106 int rate, int erp, int short_preamble);
1107 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1108 struct ieee80211_hdr *hdr, const u8 *tsc,
1110 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1111 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1113 void ieee802_11_parse_elems(u8 *start, size_t len,
1114 struct ieee802_11_elems *elems);
1115 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1116 struct ieee802_11_elems *elems,
1117 u64 filter, u32 crc);
1118 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1119 enum ieee80211_band band);
1121 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1122 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1123 void ieee80211_dynamic_ps_timer(unsigned long data);
1124 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1125 struct ieee80211_sub_if_data *sdata,
1127 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1128 struct ieee80211_hdr *hdr);
1129 void ieee80211_beacon_loss_work(struct work_struct *work);
1131 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1132 enum queue_stop_reason reason);
1133 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1134 enum queue_stop_reason reason);
1135 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1136 enum queue_stop_reason reason);
1137 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1138 enum queue_stop_reason reason);
1139 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1140 struct sk_buff *skb);
1141 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1142 struct sk_buff_head *skbs);
1144 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1145 u16 transaction, u16 auth_alg,
1146 u8 *extra, size_t extra_len, const u8 *bssid,
1147 const u8 *key, u8 key_len, u8 key_idx);
1148 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1149 const u8 *ie, size_t ie_len);
1150 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1151 const u8 *ssid, size_t ssid_len,
1152 const u8 *ie, size_t ie_len);
1154 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1155 const size_t supp_rates_len,
1156 const u8 *supp_rates);
1157 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1158 struct ieee802_11_elems *elems,
1159 enum ieee80211_band band);
1161 #ifdef CONFIG_MAC80211_NOINLINE
1162 #define debug_noinline noinline
1164 #define debug_noinline
1167 #endif /* IEEE80211_I_H */