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_mcast; /* Mesh forwarded multicast frames */
216 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
217 __u32 fwded_frames; /* Mesh total 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 enum ieee80211_mgd_state {
232 IEEE80211_MGD_STATE_IDLE,
233 IEEE80211_MGD_STATE_PROBE,
234 IEEE80211_MGD_STATE_AUTH,
235 IEEE80211_MGD_STATE_ASSOC,
238 struct ieee80211_mgd_work {
239 struct list_head list;
240 struct ieee80211_bss *bss;
242 u8 prev_bssid[ETH_ALEN];
243 u8 ssid[IEEE80211_MAX_SSID_LEN];
245 unsigned long timeout;
246 enum ieee80211_mgd_state state;
247 u16 auth_alg, auth_transaction;
251 u8 key[WLAN_KEY_LEN_WEP104];
255 u8 ie[0]; /* for auth or assoc frame, not probe */
258 /* flags used in struct ieee80211_if_managed.flags */
259 enum ieee80211_sta_flags {
260 IEEE80211_STA_BEACON_POLL = BIT(0),
261 IEEE80211_STA_CONNECTION_POLL = BIT(1),
262 IEEE80211_STA_CONTROL_PORT = BIT(2),
263 IEEE80211_STA_WMM_ENABLED = BIT(3),
264 IEEE80211_STA_DISABLE_11N = BIT(4),
265 IEEE80211_STA_CSA_RECEIVED = BIT(5),
266 IEEE80211_STA_MFP_ENABLED = BIT(6),
269 /* flags for MLME request */
270 enum ieee80211_sta_request {
271 IEEE80211_STA_REQ_SCAN,
274 struct ieee80211_if_managed {
275 struct timer_list timer;
276 struct timer_list conn_mon_timer;
277 struct timer_list bcn_mon_timer;
278 struct timer_list chswitch_timer;
279 struct work_struct work;
280 struct work_struct monitor_work;
281 struct work_struct chswitch_work;
282 struct work_struct beacon_loss_work;
284 unsigned long probe_timeout;
285 int probe_send_count;
288 struct ieee80211_bss *associated;
289 struct ieee80211_mgd_work *old_associate_work;
290 struct list_head work_list;
297 struct sk_buff_head skb_queue;
299 unsigned long timers_running; /* used for quiesce/restart */
300 bool powersave; /* powersave requested for this iface */
302 unsigned long request;
309 IEEE80211_MFP_DISABLED,
310 IEEE80211_MFP_OPTIONAL,
311 IEEE80211_MFP_REQUIRED
312 } mfp; /* management frame protection */
314 int wmm_last_param_set;
317 enum ieee80211_ibss_request {
318 IEEE80211_IBSS_REQ_RUN = 0,
321 struct ieee80211_if_ibss {
322 struct timer_list timer;
323 struct work_struct work;
325 struct sk_buff_head skb_queue;
327 unsigned long request;
328 unsigned long last_scan_completed;
337 u8 ssid[IEEE80211_MAX_SSID_LEN];
340 struct ieee80211_channel *channel;
342 unsigned long ibss_join_req;
343 /* probe response/beacon for IBSS */
344 struct sk_buff *presp, *skb;
347 IEEE80211_IBSS_MLME_SEARCH,
348 IEEE80211_IBSS_MLME_JOINED,
352 struct ieee80211_if_mesh {
353 struct work_struct work;
354 struct timer_list housekeeping_timer;
355 struct timer_list mesh_path_timer;
356 struct sk_buff_head skb_queue;
358 unsigned long timers_running;
360 unsigned long wrkq_flags;
362 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
364 /* Active Path Selection Protocol Identifier */
366 /* Active Path Selection Metric Identifier */
368 /* Congestion Control Mode Identifier */
370 /* Local mesh Destination Sequence Number */
372 /* Last used PREQ ID */
375 /* Timestamp of last DSN update */
376 unsigned long last_dsn_update;
377 /* Timestamp of last DSN sent */
378 unsigned long last_preq;
379 struct mesh_rmc *rmc;
380 spinlock_t mesh_preq_queue_lock;
381 struct mesh_preq_queue preq_queue;
383 struct mesh_stats mshstats;
384 struct mesh_config mshcfg;
386 bool accepting_plinks;
389 #ifdef CONFIG_MAC80211_MESH
390 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
391 do { (msh)->mshstats.name++; } while (0)
393 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
398 * enum ieee80211_sub_if_data_flags - virtual interface flags
400 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
401 * @IEEE80211_SDATA_PROMISC: interface is promisc
402 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
403 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
404 * associated stations and deliver multicast frames both
405 * back to wireless media and to the local net stack.
407 enum ieee80211_sub_if_data_flags {
408 IEEE80211_SDATA_ALLMULTI = BIT(0),
409 IEEE80211_SDATA_PROMISC = BIT(1),
410 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
411 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
414 struct ieee80211_sub_if_data {
415 struct list_head list;
417 struct wireless_dev wdev;
420 struct list_head key_list;
422 struct net_device *dev;
423 struct ieee80211_local *local;
427 int drop_unencrypted;
430 * keep track of whether the HT opmode (stored in
431 * vif.bss_info.ht_operation_mode) is valid.
433 bool ht_opmode_valid;
435 /* Fragment table for host-based reassembly */
436 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
437 unsigned int fragment_next;
439 #define NUM_DEFAULT_KEYS 4
440 #define NUM_DEFAULT_MGMT_KEYS 2
441 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
442 struct ieee80211_key *default_key;
443 struct ieee80211_key *default_mgmt_key;
448 * AP this belongs to: self in AP mode and
449 * corresponding AP in VLAN mode, NULL for
450 * all others (might be needed later in IBSS)
452 struct ieee80211_if_ap *bss;
454 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
455 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
458 struct ieee80211_if_ap ap;
459 struct ieee80211_if_wds wds;
460 struct ieee80211_if_vlan vlan;
461 struct ieee80211_if_managed mgd;
462 struct ieee80211_if_ibss ibss;
463 #ifdef CONFIG_MAC80211_MESH
464 struct ieee80211_if_mesh mesh;
469 #ifdef CONFIG_MAC80211_DEBUGFS
470 struct dentry *debugfsdir;
473 struct dentry *drop_unencrypted;
474 struct dentry *bssid;
476 struct dentry *capab;
477 struct dentry *force_unicast_rateidx;
478 struct dentry *max_ratectrl_rateidx;
481 struct dentry *drop_unencrypted;
482 struct dentry *num_sta_ps;
483 struct dentry *dtim_count;
484 struct dentry *force_unicast_rateidx;
485 struct dentry *max_ratectrl_rateidx;
486 struct dentry *num_buffered_multicast;
489 struct dentry *drop_unencrypted;
491 struct dentry *force_unicast_rateidx;
492 struct dentry *max_ratectrl_rateidx;
495 struct dentry *drop_unencrypted;
496 struct dentry *force_unicast_rateidx;
497 struct dentry *max_ratectrl_rateidx;
504 struct dentry *default_key;
505 struct dentry *default_mgmt_key;
508 #ifdef CONFIG_MAC80211_MESH
509 struct dentry *mesh_stats_dir;
511 struct dentry *fwded_mcast;
512 struct dentry *fwded_unicast;
513 struct dentry *fwded_frames;
514 struct dentry *dropped_frames_ttl;
515 struct dentry *dropped_frames_no_route;
516 struct dentry *estab_plinks;
517 struct timer_list mesh_path_timer;
520 struct dentry *mesh_config_dir;
522 struct dentry *dot11MeshRetryTimeout;
523 struct dentry *dot11MeshConfirmTimeout;
524 struct dentry *dot11MeshHoldingTimeout;
525 struct dentry *dot11MeshMaxRetries;
526 struct dentry *dot11MeshTTL;
527 struct dentry *auto_open_plinks;
528 struct dentry *dot11MeshMaxPeerLinks;
529 struct dentry *dot11MeshHWMPactivePathTimeout;
530 struct dentry *dot11MeshHWMPpreqMinInterval;
531 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
532 struct dentry *dot11MeshHWMPmaxPREQretries;
533 struct dentry *path_refresh_time;
534 struct dentry *min_discovery_timeout;
539 /* must be last, dynamically sized area in this! */
540 struct ieee80211_vif vif;
544 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
546 return container_of(p, struct ieee80211_sub_if_data, vif);
550 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
551 u8 mesh_id_len, u8 *mesh_id)
553 #ifdef CONFIG_MAC80211_MESH
554 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
555 ifmsh->mesh_id_len = mesh_id_len;
556 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
563 IEEE80211_RX_MSG = 1,
564 IEEE80211_TX_STATUS_MSG = 2,
565 IEEE80211_DELBA_MSG = 3,
566 IEEE80211_ADDBA_MSG = 4,
569 enum queue_stop_reason {
570 IEEE80211_QUEUE_STOP_REASON_DRIVER,
571 IEEE80211_QUEUE_STOP_REASON_PS,
572 IEEE80211_QUEUE_STOP_REASON_CSA,
573 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
574 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
575 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
579 * mac80211 scan flags - currently active scan mode
581 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
582 * well be on the operating channel
583 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
584 * determine if we are on the operating channel or not
585 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
586 * gets only set in conjunction with SCAN_SW_SCANNING
595 * enum mac80211_scan_state - scan state machine states
597 * @SCAN_DECISION: Main entry point to the scan state machine, this state
598 * determines if we should keep on scanning or switch back to the
600 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
601 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
602 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
603 * about us leaving the channel and stop all associated STA interfaces
604 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
605 * AP about us being back and restart all associated STA interfaces
607 enum mac80211_scan_state {
611 SCAN_LEAVE_OPER_CHANNEL,
612 SCAN_ENTER_OPER_CHANNEL,
615 struct ieee80211_local {
616 /* embed the driver visible part.
617 * don't cast (use the static inlines below), but we keep
618 * it first anyway so they become a no-op */
619 struct ieee80211_hw hw;
621 const struct ieee80211_ops *ops;
624 * private workqueue to mac80211. mac80211 makes this accessible
625 * via ieee80211_queue_work()
627 struct workqueue_struct *workqueue;
629 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
630 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
631 spinlock_t queue_stop_reason_lock;
634 int monitors, cooked_mntrs;
635 /* number of interfaces with corresponding FIF_ flags */
636 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
637 unsigned int filter_flags; /* FIF_* */
638 struct iw_statistics wstats;
640 /* protects the aggregated multicast list and filter calls */
641 spinlock_t filter_lock;
643 /* used for uploading changed mc list */
644 struct work_struct reconfig_filter;
646 /* aggregated multicast list */
647 struct dev_addr_list *mc_list;
650 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
653 * suspended is true if we finished all the suspend _and_ we have
654 * not yet come up from resume. This is to be used by mac80211
655 * to ensure driver sanity during suspend and mac80211's own
656 * sanity. It can eventually be used for WoW as well.
661 * quiescing is true during the suspend process _only_ to
662 * ease timer cancelling etc.
666 int tx_headroom; /* required headroom for hardware/radiotap */
668 /* Tasklet and skb queue to process calls from IRQ mode. All frames
669 * added to skb_queue will be processed, but frames in
670 * skb_queue_unreliable may be dropped if the total length of these
671 * queues increases over the limit. */
672 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
673 struct tasklet_struct tasklet;
674 struct sk_buff_head skb_queue;
675 struct sk_buff_head skb_queue_unreliable;
679 * The lock only protects the list, hash, timer and counter
680 * against manipulation, reads are done in RCU. Additionally,
681 * the lock protects each BSS's TIM bitmap.
684 unsigned long num_sta;
685 struct list_head sta_list;
686 struct sta_info *sta_hash[STA_HASH_SIZE];
687 struct timer_list sta_cleanup;
690 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
691 struct tasklet_struct tx_pending_tasklet;
694 * This lock is used to prevent concurrent A-MPDU
695 * session start/stop processing, this thus also
696 * synchronises the ->ampdu_action() callback to
697 * drivers and limits it to one at a time.
699 spinlock_t ampdu_lock;
701 /* number of interfaces with corresponding IFF_ flags */
702 atomic_t iff_allmultis, iff_promiscs;
704 struct rate_control_ref *rate_ctrl;
706 struct crypto_blkcipher *wep_tx_tfm;
707 struct crypto_blkcipher *wep_rx_tfm;
711 struct list_head interfaces;
712 struct mutex iflist_mtx;
715 * Key lock, protects sdata's key_list and sta_info's
716 * key pointers (write access, they're RCU.)
721 /* Scanning and BSS list */
722 struct mutex scan_mtx;
723 unsigned long scanning;
724 struct cfg80211_ssid scan_ssid;
725 struct cfg80211_scan_request *int_scan_req;
726 struct cfg80211_scan_request *scan_req;
727 struct ieee80211_channel *scan_channel;
730 int scan_channel_idx;
733 enum mac80211_scan_state next_scan_state;
734 struct delayed_work scan_work;
735 struct ieee80211_sub_if_data *scan_sdata;
736 enum nl80211_channel_type oper_channel_type;
737 struct ieee80211_channel *oper_channel, *csa_channel;
740 /* dot11CountersTable */
741 u32 dot11TransmittedFragmentCount;
742 u32 dot11MulticastTransmittedFrameCount;
743 u32 dot11FailedCount;
745 u32 dot11MultipleRetryCount;
746 u32 dot11FrameDuplicateCount;
747 u32 dot11ReceivedFragmentCount;
748 u32 dot11MulticastReceivedFrameCount;
749 u32 dot11TransmittedFrameCount;
751 #ifdef CONFIG_MAC80211_LEDS
752 int tx_led_counter, rx_led_counter;
753 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
754 char tx_led_name[32], rx_led_name[32],
755 assoc_led_name[32], radio_led_name[32];
758 #ifdef CONFIG_MAC80211_DEBUGFS
759 struct work_struct sta_debugfs_add;
762 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
763 /* TX/RX handler statistics */
764 unsigned int tx_handlers_drop;
765 unsigned int tx_handlers_queued;
766 unsigned int tx_handlers_drop_unencrypted;
767 unsigned int tx_handlers_drop_fragment;
768 unsigned int tx_handlers_drop_wep;
769 unsigned int tx_handlers_drop_not_assoc;
770 unsigned int tx_handlers_drop_unauth_port;
771 unsigned int rx_handlers_drop;
772 unsigned int rx_handlers_queued;
773 unsigned int rx_handlers_drop_nullfunc;
774 unsigned int rx_handlers_drop_defrag;
775 unsigned int rx_handlers_drop_short;
776 unsigned int rx_handlers_drop_passive_scan;
777 unsigned int tx_expand_skb_head;
778 unsigned int tx_expand_skb_head_cloned;
779 unsigned int rx_expand_skb_head;
780 unsigned int rx_expand_skb_head2;
781 unsigned int rx_handlers_fragments;
782 unsigned int tx_status_drop;
783 #define I802_DEBUG_INC(c) (c)++
784 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
785 #define I802_DEBUG_INC(c) do { } while (0)
786 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
789 int total_ps_buffered; /* total number of all buffered unicast and
790 * multicast packets for power saving stations
792 int wifi_wme_noack_test;
793 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
797 * PS can only be enabled when we have exactly one managed
798 * interface (and monitors) in PS, this then points there.
800 struct ieee80211_sub_if_data *ps_sdata;
801 struct work_struct dynamic_ps_enable_work;
802 struct work_struct dynamic_ps_disable_work;
803 struct timer_list dynamic_ps_timer;
804 struct notifier_block network_latency_notifier;
806 int user_power_level; /* in dBm */
807 int power_constr_level; /* in dBm */
809 struct work_struct restart_work;
811 #ifdef CONFIG_MAC80211_DEBUGFS
812 struct local_debugfsdentries {
813 struct dentry *rcdir;
814 struct dentry *rcname;
815 struct dentry *frequency;
816 struct dentry *total_ps_buffered;
817 struct dentry *wep_iv;
819 struct dentry *queues;
820 struct dentry *reset;
821 struct dentry *noack;
822 struct dentry *statistics;
823 struct local_debugfsdentries_statsdentries {
824 struct dentry *transmitted_fragment_count;
825 struct dentry *multicast_transmitted_frame_count;
826 struct dentry *failed_count;
827 struct dentry *retry_count;
828 struct dentry *multiple_retry_count;
829 struct dentry *frame_duplicate_count;
830 struct dentry *received_fragment_count;
831 struct dentry *multicast_received_frame_count;
832 struct dentry *transmitted_frame_count;
833 struct dentry *wep_undecryptable_count;
834 struct dentry *num_scans;
835 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
836 struct dentry *tx_handlers_drop;
837 struct dentry *tx_handlers_queued;
838 struct dentry *tx_handlers_drop_unencrypted;
839 struct dentry *tx_handlers_drop_fragment;
840 struct dentry *tx_handlers_drop_wep;
841 struct dentry *tx_handlers_drop_not_assoc;
842 struct dentry *tx_handlers_drop_unauth_port;
843 struct dentry *rx_handlers_drop;
844 struct dentry *rx_handlers_queued;
845 struct dentry *rx_handlers_drop_nullfunc;
846 struct dentry *rx_handlers_drop_defrag;
847 struct dentry *rx_handlers_drop_short;
848 struct dentry *rx_handlers_drop_passive_scan;
849 struct dentry *tx_expand_skb_head;
850 struct dentry *tx_expand_skb_head_cloned;
851 struct dentry *rx_expand_skb_head;
852 struct dentry *rx_expand_skb_head2;
853 struct dentry *rx_handlers_fragments;
854 struct dentry *tx_status_drop;
856 struct dentry *dot11ACKFailureCount;
857 struct dentry *dot11RTSFailureCount;
858 struct dentry *dot11FCSErrorCount;
859 struct dentry *dot11RTSSuccessCount;
861 struct dentry *stations;
867 static inline struct ieee80211_sub_if_data *
868 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
870 return netdev_priv(dev);
873 /* this struct represents 802.11n's RA/TID combination */
874 struct ieee80211_ra_tid {
879 /* Parsed Information Elements */
880 struct ieee802_11_elems {
884 /* pointers to IEs */
890 struct ieee80211_tim_ie *tim;
899 struct ieee80211_ht_cap *ht_cap_elem;
900 struct ieee80211_ht_info *ht_info_elem;
910 u8 *quiet_elem; /* first quite element */
913 /* length of them, respectively */
925 u8 ext_supp_rates_len;
934 u8 ch_switch_elem_len;
936 u8 pwr_constr_elem_len;
938 u8 num_of_quiet_elem; /* can be more the one */
942 static inline struct ieee80211_local *hw_to_local(
943 struct ieee80211_hw *hw)
945 return container_of(hw, struct ieee80211_local, hw);
948 static inline struct ieee80211_hw *local_to_hw(
949 struct ieee80211_local *local)
955 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
957 return compare_ether_addr(raddr, addr) == 0 ||
958 is_broadcast_ether_addr(raddr);
962 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
963 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
964 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
966 void ieee80211_configure_filter(struct ieee80211_local *local);
967 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
970 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
971 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
972 struct cfg80211_auth_request *req);
973 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
974 struct cfg80211_assoc_request *req);
975 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
976 struct cfg80211_deauth_request *req,
978 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
979 struct cfg80211_disassoc_request *req,
981 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
982 struct sk_buff *skb);
983 void ieee80211_send_pspoll(struct ieee80211_local *local,
984 struct ieee80211_sub_if_data *sdata);
985 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
986 int ieee80211_max_network_latency(struct notifier_block *nb,
987 unsigned long data, void *dummy);
988 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
989 struct ieee80211_channel_sw_ie *sw_elem,
990 struct ieee80211_bss *bss);
991 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
992 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
995 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
996 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
998 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
999 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1000 u8 *bssid, u8 *addr, u32 supp_rates);
1001 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1002 struct cfg80211_ibss_params *params);
1003 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1004 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1005 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1007 /* scan/BSS handling */
1008 void ieee80211_scan_work(struct work_struct *work);
1009 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1010 const u8 *ssid, u8 ssid_len);
1011 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1012 struct cfg80211_scan_request *req);
1013 void ieee80211_scan_cancel(struct ieee80211_local *local);
1015 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1017 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1018 struct ieee80211_bss *
1019 ieee80211_bss_info_update(struct ieee80211_local *local,
1020 struct ieee80211_rx_status *rx_status,
1021 struct ieee80211_mgmt *mgmt,
1023 struct ieee802_11_elems *elems,
1024 struct ieee80211_channel *channel,
1026 struct ieee80211_bss *
1027 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1028 u8 *ssid, u8 ssid_len);
1029 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1030 struct ieee80211_bss *bss);
1032 /* interface handling */
1033 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1034 struct net_device **new_dev, enum nl80211_iftype type,
1035 struct vif_params *params);
1036 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1037 enum nl80211_iftype type);
1038 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1039 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1040 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1041 void ieee80211_recalc_idle(struct ieee80211_local *local);
1044 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1045 void ieee80211_tx_pending(unsigned long data);
1046 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1047 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1050 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1051 struct ieee80211_ht_cap *ht_cap_ie,
1052 struct ieee80211_sta_ht_cap *ht_cap);
1053 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1054 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1055 const u8 *da, u16 tid,
1056 u16 initiator, u16 reason_code);
1058 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1059 u16 tid, u16 initiator, u16 reason);
1060 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1061 u16 initiator, u16 reason);
1062 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1063 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1064 struct sta_info *sta,
1065 struct ieee80211_mgmt *mgmt, size_t len);
1066 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1067 struct sta_info *sta,
1068 struct ieee80211_mgmt *mgmt,
1070 void ieee80211_process_addba_request(struct ieee80211_local *local,
1071 struct sta_info *sta,
1072 struct ieee80211_mgmt *mgmt,
1075 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1076 enum ieee80211_back_parties initiator);
1078 /* Spectrum management */
1079 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1080 struct ieee80211_mgmt *mgmt,
1083 /* Suspend/resume and hw reconfiguration */
1084 int ieee80211_reconfig(struct ieee80211_local *local);
1087 int __ieee80211_suspend(struct ieee80211_hw *hw);
1089 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1091 return ieee80211_reconfig(hw_to_local(hw));
1094 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1099 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1105 /* utility functions/constants */
1106 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1107 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1108 enum nl80211_iftype type);
1109 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1110 int rate, int erp, int short_preamble);
1111 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1112 struct ieee80211_hdr *hdr, const u8 *tsc,
1114 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1115 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1117 void ieee802_11_parse_elems(u8 *start, size_t len,
1118 struct ieee802_11_elems *elems);
1119 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1120 struct ieee802_11_elems *elems,
1121 u64 filter, u32 crc);
1122 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1123 enum ieee80211_band band);
1125 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1126 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1127 void ieee80211_dynamic_ps_timer(unsigned long data);
1128 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1129 struct ieee80211_sub_if_data *sdata,
1131 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1132 struct ieee80211_hdr *hdr);
1133 void ieee80211_beacon_loss_work(struct work_struct *work);
1135 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1136 enum queue_stop_reason reason);
1137 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1138 enum queue_stop_reason reason);
1139 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1140 enum queue_stop_reason reason);
1141 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1142 enum queue_stop_reason reason);
1143 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1144 struct sk_buff *skb);
1145 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1146 struct sk_buff_head *skbs);
1148 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1149 u16 transaction, u16 auth_alg,
1150 u8 *extra, size_t extra_len, const u8 *bssid,
1151 const u8 *key, u8 key_len, u8 key_idx);
1152 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1153 const u8 *ie, size_t ie_len);
1154 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1155 const u8 *ssid, size_t ssid_len,
1156 const u8 *ie, size_t ie_len);
1158 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1159 const size_t supp_rates_len,
1160 const u8 *supp_rates);
1161 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1162 struct ieee802_11_elems *elems,
1163 enum ieee80211_band band);
1165 #ifdef CONFIG_MAC80211_NOINLINE
1166 #define debug_noinline noinline
1168 #define debug_noinline
1171 #endif /* IEEE80211_I_H */