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 /* Synchronization Protocol Identifier */
372 /* Authentication Protocol Identifier */
374 /* Local mesh Destination Sequence Number */
376 /* Last used PREQ ID */
379 /* Timestamp of last DSN update */
380 unsigned long last_dsn_update;
381 /* Timestamp of last DSN sent */
382 unsigned long last_preq;
383 struct mesh_rmc *rmc;
384 spinlock_t mesh_preq_queue_lock;
385 struct mesh_preq_queue preq_queue;
387 struct mesh_stats mshstats;
388 struct mesh_config mshcfg;
390 bool accepting_plinks;
393 #ifdef CONFIG_MAC80211_MESH
394 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
395 do { (msh)->mshstats.name++; } while (0)
397 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
402 * enum ieee80211_sub_if_data_flags - virtual interface flags
404 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
405 * @IEEE80211_SDATA_PROMISC: interface is promisc
406 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
407 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
408 * associated stations and deliver multicast frames both
409 * back to wireless media and to the local net stack.
411 enum ieee80211_sub_if_data_flags {
412 IEEE80211_SDATA_ALLMULTI = BIT(0),
413 IEEE80211_SDATA_PROMISC = BIT(1),
414 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
415 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
418 struct ieee80211_sub_if_data {
419 struct list_head list;
421 struct wireless_dev wdev;
424 struct list_head key_list;
426 struct net_device *dev;
427 struct ieee80211_local *local;
431 int drop_unencrypted;
434 * keep track of whether the HT opmode (stored in
435 * vif.bss_info.ht_operation_mode) is valid.
437 bool ht_opmode_valid;
439 /* Fragment table for host-based reassembly */
440 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
441 unsigned int fragment_next;
443 #define NUM_DEFAULT_KEYS 4
444 #define NUM_DEFAULT_MGMT_KEYS 2
445 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
446 struct ieee80211_key *default_key;
447 struct ieee80211_key *default_mgmt_key;
452 * AP this belongs to: self in AP mode and
453 * corresponding AP in VLAN mode, NULL for
454 * all others (might be needed later in IBSS)
456 struct ieee80211_if_ap *bss;
458 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
459 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
462 struct ieee80211_if_ap ap;
463 struct ieee80211_if_wds wds;
464 struct ieee80211_if_vlan vlan;
465 struct ieee80211_if_managed mgd;
466 struct ieee80211_if_ibss ibss;
467 #ifdef CONFIG_MAC80211_MESH
468 struct ieee80211_if_mesh mesh;
473 #ifdef CONFIG_MAC80211_DEBUGFS
474 struct dentry *debugfsdir;
477 struct dentry *drop_unencrypted;
478 struct dentry *bssid;
480 struct dentry *capab;
481 struct dentry *force_unicast_rateidx;
482 struct dentry *max_ratectrl_rateidx;
485 struct dentry *drop_unencrypted;
486 struct dentry *num_sta_ps;
487 struct dentry *dtim_count;
488 struct dentry *force_unicast_rateidx;
489 struct dentry *max_ratectrl_rateidx;
490 struct dentry *num_buffered_multicast;
493 struct dentry *drop_unencrypted;
495 struct dentry *force_unicast_rateidx;
496 struct dentry *max_ratectrl_rateidx;
499 struct dentry *drop_unencrypted;
500 struct dentry *force_unicast_rateidx;
501 struct dentry *max_ratectrl_rateidx;
508 struct dentry *default_key;
509 struct dentry *default_mgmt_key;
512 #ifdef CONFIG_MAC80211_MESH
513 struct dentry *mesh_stats_dir;
515 struct dentry *fwded_mcast;
516 struct dentry *fwded_unicast;
517 struct dentry *fwded_frames;
518 struct dentry *dropped_frames_ttl;
519 struct dentry *dropped_frames_no_route;
520 struct dentry *estab_plinks;
521 struct timer_list mesh_path_timer;
524 struct dentry *mesh_config_dir;
526 struct dentry *dot11MeshRetryTimeout;
527 struct dentry *dot11MeshConfirmTimeout;
528 struct dentry *dot11MeshHoldingTimeout;
529 struct dentry *dot11MeshMaxRetries;
530 struct dentry *dot11MeshTTL;
531 struct dentry *auto_open_plinks;
532 struct dentry *dot11MeshMaxPeerLinks;
533 struct dentry *dot11MeshHWMPactivePathTimeout;
534 struct dentry *dot11MeshHWMPpreqMinInterval;
535 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
536 struct dentry *dot11MeshHWMPmaxPREQretries;
537 struct dentry *path_refresh_time;
538 struct dentry *min_discovery_timeout;
543 /* must be last, dynamically sized area in this! */
544 struct ieee80211_vif vif;
548 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
550 return container_of(p, struct ieee80211_sub_if_data, vif);
554 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
555 u8 mesh_id_len, u8 *mesh_id)
557 #ifdef CONFIG_MAC80211_MESH
558 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
559 ifmsh->mesh_id_len = mesh_id_len;
560 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
567 IEEE80211_RX_MSG = 1,
568 IEEE80211_TX_STATUS_MSG = 2,
569 IEEE80211_DELBA_MSG = 3,
570 IEEE80211_ADDBA_MSG = 4,
573 enum queue_stop_reason {
574 IEEE80211_QUEUE_STOP_REASON_DRIVER,
575 IEEE80211_QUEUE_STOP_REASON_PS,
576 IEEE80211_QUEUE_STOP_REASON_CSA,
577 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
578 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
579 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
583 * mac80211 scan flags - currently active scan mode
585 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
586 * well be on the operating channel
587 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
588 * determine if we are on the operating channel or not
589 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
590 * gets only set in conjunction with SCAN_SW_SCANNING
599 * enum mac80211_scan_state - scan state machine states
601 * @SCAN_DECISION: Main entry point to the scan state machine, this state
602 * determines if we should keep on scanning or switch back to the
604 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
605 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
606 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
607 * about us leaving the channel and stop all associated STA interfaces
608 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
609 * AP about us being back and restart all associated STA interfaces
611 enum mac80211_scan_state {
615 SCAN_LEAVE_OPER_CHANNEL,
616 SCAN_ENTER_OPER_CHANNEL,
619 struct ieee80211_local {
620 /* embed the driver visible part.
621 * don't cast (use the static inlines below), but we keep
622 * it first anyway so they become a no-op */
623 struct ieee80211_hw hw;
625 const struct ieee80211_ops *ops;
628 * private workqueue to mac80211. mac80211 makes this accessible
629 * via ieee80211_queue_work()
631 struct workqueue_struct *workqueue;
633 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
634 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
635 spinlock_t queue_stop_reason_lock;
638 int monitors, cooked_mntrs;
639 /* number of interfaces with corresponding FIF_ flags */
640 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll;
641 unsigned int filter_flags; /* FIF_* */
642 struct iw_statistics wstats;
644 /* protects the aggregated multicast list and filter calls */
645 spinlock_t filter_lock;
647 /* used for uploading changed mc list */
648 struct work_struct reconfig_filter;
650 /* aggregated multicast list */
651 struct dev_addr_list *mc_list;
654 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
657 * suspended is true if we finished all the suspend _and_ we have
658 * not yet come up from resume. This is to be used by mac80211
659 * to ensure driver sanity during suspend and mac80211's own
660 * sanity. It can eventually be used for WoW as well.
665 * Resuming is true while suspended, but when we're reprogramming the
666 * hardware -- at that time it's allowed to use ieee80211_queue_work()
667 * again even though some other parts of the stack are still suspended
668 * and we still drop received frames to avoid waking the stack.
673 * quiescing is true during the suspend process _only_ to
674 * ease timer cancelling etc.
678 /* device is started */
681 int tx_headroom; /* required headroom for hardware/radiotap */
683 /* Tasklet and skb queue to process calls from IRQ mode. All frames
684 * added to skb_queue will be processed, but frames in
685 * skb_queue_unreliable may be dropped if the total length of these
686 * queues increases over the limit. */
687 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
688 struct tasklet_struct tasklet;
689 struct sk_buff_head skb_queue;
690 struct sk_buff_head skb_queue_unreliable;
694 * The lock only protects the list, hash, timer and counter
695 * against manipulation, reads are done in RCU. Additionally,
696 * the lock protects each BSS's TIM bitmap.
699 unsigned long num_sta;
700 struct list_head sta_list;
701 struct sta_info *sta_hash[STA_HASH_SIZE];
702 struct timer_list sta_cleanup;
705 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
706 struct tasklet_struct tx_pending_tasklet;
709 * This lock is used to prevent concurrent A-MPDU
710 * session start/stop processing, this thus also
711 * synchronises the ->ampdu_action() callback to
712 * drivers and limits it to one at a time.
714 spinlock_t ampdu_lock;
716 /* number of interfaces with corresponding IFF_ flags */
717 atomic_t iff_allmultis, iff_promiscs;
719 struct rate_control_ref *rate_ctrl;
721 struct crypto_blkcipher *wep_tx_tfm;
722 struct crypto_blkcipher *wep_rx_tfm;
726 struct list_head interfaces;
727 struct mutex iflist_mtx;
730 * Key lock, protects sdata's key_list and sta_info's
731 * key pointers (write access, they're RCU.)
736 /* Scanning and BSS list */
737 struct mutex scan_mtx;
738 unsigned long scanning;
739 struct cfg80211_ssid scan_ssid;
740 struct cfg80211_scan_request *int_scan_req;
741 struct cfg80211_scan_request *scan_req;
742 struct ieee80211_channel *scan_channel;
745 int scan_channel_idx;
748 enum mac80211_scan_state next_scan_state;
749 struct delayed_work scan_work;
750 struct ieee80211_sub_if_data *scan_sdata;
751 enum nl80211_channel_type oper_channel_type;
752 struct ieee80211_channel *oper_channel, *csa_channel;
755 /* dot11CountersTable */
756 u32 dot11TransmittedFragmentCount;
757 u32 dot11MulticastTransmittedFrameCount;
758 u32 dot11FailedCount;
760 u32 dot11MultipleRetryCount;
761 u32 dot11FrameDuplicateCount;
762 u32 dot11ReceivedFragmentCount;
763 u32 dot11MulticastReceivedFrameCount;
764 u32 dot11TransmittedFrameCount;
766 #ifdef CONFIG_MAC80211_LEDS
767 int tx_led_counter, rx_led_counter;
768 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
769 char tx_led_name[32], rx_led_name[32],
770 assoc_led_name[32], radio_led_name[32];
773 #ifdef CONFIG_MAC80211_DEBUGFS
774 struct work_struct sta_debugfs_add;
777 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
778 /* TX/RX handler statistics */
779 unsigned int tx_handlers_drop;
780 unsigned int tx_handlers_queued;
781 unsigned int tx_handlers_drop_unencrypted;
782 unsigned int tx_handlers_drop_fragment;
783 unsigned int tx_handlers_drop_wep;
784 unsigned int tx_handlers_drop_not_assoc;
785 unsigned int tx_handlers_drop_unauth_port;
786 unsigned int rx_handlers_drop;
787 unsigned int rx_handlers_queued;
788 unsigned int rx_handlers_drop_nullfunc;
789 unsigned int rx_handlers_drop_defrag;
790 unsigned int rx_handlers_drop_short;
791 unsigned int rx_handlers_drop_passive_scan;
792 unsigned int tx_expand_skb_head;
793 unsigned int tx_expand_skb_head_cloned;
794 unsigned int rx_expand_skb_head;
795 unsigned int rx_expand_skb_head2;
796 unsigned int rx_handlers_fragments;
797 unsigned int tx_status_drop;
798 #define I802_DEBUG_INC(c) (c)++
799 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
800 #define I802_DEBUG_INC(c) do { } while (0)
801 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
804 int total_ps_buffered; /* total number of all buffered unicast and
805 * multicast packets for power saving stations
807 int wifi_wme_noack_test;
808 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
812 * PS can only be enabled when we have exactly one managed
813 * interface (and monitors) in PS, this then points there.
815 struct ieee80211_sub_if_data *ps_sdata;
816 struct work_struct dynamic_ps_enable_work;
817 struct work_struct dynamic_ps_disable_work;
818 struct timer_list dynamic_ps_timer;
819 struct notifier_block network_latency_notifier;
821 int user_power_level; /* in dBm */
822 int power_constr_level; /* in dBm */
824 struct work_struct restart_work;
826 #ifdef CONFIG_MAC80211_DEBUGFS
827 struct local_debugfsdentries {
828 struct dentry *rcdir;
829 struct dentry *rcname;
830 struct dentry *frequency;
831 struct dentry *total_ps_buffered;
832 struct dentry *wep_iv;
834 struct dentry *queues;
835 struct dentry *reset;
836 struct dentry *noack;
837 struct dentry *statistics;
838 struct local_debugfsdentries_statsdentries {
839 struct dentry *transmitted_fragment_count;
840 struct dentry *multicast_transmitted_frame_count;
841 struct dentry *failed_count;
842 struct dentry *retry_count;
843 struct dentry *multiple_retry_count;
844 struct dentry *frame_duplicate_count;
845 struct dentry *received_fragment_count;
846 struct dentry *multicast_received_frame_count;
847 struct dentry *transmitted_frame_count;
848 struct dentry *wep_undecryptable_count;
849 struct dentry *num_scans;
850 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
851 struct dentry *tx_handlers_drop;
852 struct dentry *tx_handlers_queued;
853 struct dentry *tx_handlers_drop_unencrypted;
854 struct dentry *tx_handlers_drop_fragment;
855 struct dentry *tx_handlers_drop_wep;
856 struct dentry *tx_handlers_drop_not_assoc;
857 struct dentry *tx_handlers_drop_unauth_port;
858 struct dentry *rx_handlers_drop;
859 struct dentry *rx_handlers_queued;
860 struct dentry *rx_handlers_drop_nullfunc;
861 struct dentry *rx_handlers_drop_defrag;
862 struct dentry *rx_handlers_drop_short;
863 struct dentry *rx_handlers_drop_passive_scan;
864 struct dentry *tx_expand_skb_head;
865 struct dentry *tx_expand_skb_head_cloned;
866 struct dentry *rx_expand_skb_head;
867 struct dentry *rx_expand_skb_head2;
868 struct dentry *rx_handlers_fragments;
869 struct dentry *tx_status_drop;
871 struct dentry *dot11ACKFailureCount;
872 struct dentry *dot11RTSFailureCount;
873 struct dentry *dot11FCSErrorCount;
874 struct dentry *dot11RTSSuccessCount;
876 struct dentry *stations;
882 static inline struct ieee80211_sub_if_data *
883 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
885 return netdev_priv(dev);
888 /* this struct represents 802.11n's RA/TID combination */
889 struct ieee80211_ra_tid {
894 /* Parsed Information Elements */
895 struct ieee802_11_elems {
899 /* pointers to IEs */
905 struct ieee80211_tim_ie *tim;
914 struct ieee80211_ht_cap *ht_cap_elem;
915 struct ieee80211_ht_info *ht_info_elem;
925 u8 *quiet_elem; /* first quite element */
928 /* length of them, respectively */
940 u8 ext_supp_rates_len;
949 u8 ch_switch_elem_len;
951 u8 pwr_constr_elem_len;
953 u8 num_of_quiet_elem; /* can be more the one */
957 static inline struct ieee80211_local *hw_to_local(
958 struct ieee80211_hw *hw)
960 return container_of(hw, struct ieee80211_local, hw);
963 static inline struct ieee80211_hw *local_to_hw(
964 struct ieee80211_local *local)
970 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
972 return compare_ether_addr(raddr, addr) == 0 ||
973 is_broadcast_ether_addr(raddr);
977 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
978 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
979 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
981 void ieee80211_configure_filter(struct ieee80211_local *local);
982 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
985 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
986 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
987 struct cfg80211_auth_request *req);
988 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
989 struct cfg80211_assoc_request *req);
990 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
991 struct cfg80211_deauth_request *req,
993 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
994 struct cfg80211_disassoc_request *req,
996 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
997 struct sk_buff *skb);
998 void ieee80211_send_pspoll(struct ieee80211_local *local,
999 struct ieee80211_sub_if_data *sdata);
1000 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1001 int ieee80211_max_network_latency(struct notifier_block *nb,
1002 unsigned long data, void *dummy);
1003 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1004 struct ieee80211_channel_sw_ie *sw_elem,
1005 struct ieee80211_bss *bss);
1006 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1007 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1010 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1011 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1013 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1014 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1015 u8 *bssid, u8 *addr, u32 supp_rates);
1016 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1017 struct cfg80211_ibss_params *params);
1018 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1019 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1020 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1022 /* scan/BSS handling */
1023 void ieee80211_scan_work(struct work_struct *work);
1024 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1025 const u8 *ssid, u8 ssid_len);
1026 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1027 struct cfg80211_scan_request *req);
1028 void ieee80211_scan_cancel(struct ieee80211_local *local);
1030 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1032 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1033 struct ieee80211_bss *
1034 ieee80211_bss_info_update(struct ieee80211_local *local,
1035 struct ieee80211_rx_status *rx_status,
1036 struct ieee80211_mgmt *mgmt,
1038 struct ieee802_11_elems *elems,
1039 struct ieee80211_channel *channel,
1041 struct ieee80211_bss *
1042 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1043 u8 *ssid, u8 ssid_len);
1044 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1045 struct ieee80211_bss *bss);
1047 /* interface handling */
1048 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1049 struct net_device **new_dev, enum nl80211_iftype type,
1050 struct vif_params *params);
1051 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1052 enum nl80211_iftype type);
1053 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1054 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1055 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1056 void ieee80211_recalc_idle(struct ieee80211_local *local);
1059 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1060 void ieee80211_tx_pending(unsigned long data);
1061 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1062 struct net_device *dev);
1063 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1064 struct net_device *dev);
1067 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1068 struct ieee80211_ht_cap *ht_cap_ie,
1069 struct ieee80211_sta_ht_cap *ht_cap);
1070 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1071 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1072 const u8 *da, u16 tid,
1073 u16 initiator, u16 reason_code);
1075 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1076 u16 tid, u16 initiator, u16 reason);
1077 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1078 u16 initiator, u16 reason);
1079 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1080 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1081 struct sta_info *sta,
1082 struct ieee80211_mgmt *mgmt, size_t len);
1083 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1084 struct sta_info *sta,
1085 struct ieee80211_mgmt *mgmt,
1087 void ieee80211_process_addba_request(struct ieee80211_local *local,
1088 struct sta_info *sta,
1089 struct ieee80211_mgmt *mgmt,
1092 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1093 enum ieee80211_back_parties initiator);
1094 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1095 enum ieee80211_back_parties initiator);
1097 /* Spectrum management */
1098 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1099 struct ieee80211_mgmt *mgmt,
1102 /* Suspend/resume and hw reconfiguration */
1103 int ieee80211_reconfig(struct ieee80211_local *local);
1104 void ieee80211_stop_device(struct ieee80211_local *local);
1107 int __ieee80211_suspend(struct ieee80211_hw *hw);
1109 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1111 return ieee80211_reconfig(hw_to_local(hw));
1114 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1119 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1125 /* utility functions/constants */
1126 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1127 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1128 enum nl80211_iftype type);
1129 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1130 int rate, int erp, int short_preamble);
1131 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1132 struct ieee80211_hdr *hdr, const u8 *tsc,
1134 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1135 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1137 void ieee802_11_parse_elems(u8 *start, size_t len,
1138 struct ieee802_11_elems *elems);
1139 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1140 struct ieee802_11_elems *elems,
1141 u64 filter, u32 crc);
1142 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1143 enum ieee80211_band band);
1145 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1146 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1147 void ieee80211_dynamic_ps_timer(unsigned long data);
1148 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1149 struct ieee80211_sub_if_data *sdata,
1151 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1152 struct ieee80211_hdr *hdr);
1153 void ieee80211_beacon_loss_work(struct work_struct *work);
1155 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1156 enum queue_stop_reason reason);
1157 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1158 enum queue_stop_reason reason);
1159 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1160 enum queue_stop_reason reason);
1161 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1162 enum queue_stop_reason reason);
1163 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1164 struct sk_buff *skb);
1165 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1166 struct sk_buff_head *skbs);
1168 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1169 u16 transaction, u16 auth_alg,
1170 u8 *extra, size_t extra_len, const u8 *bssid,
1171 const u8 *key, u8 key_len, u8 key_idx);
1172 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1173 const u8 *ie, size_t ie_len);
1174 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1175 const u8 *ssid, size_t ssid_len,
1176 const u8 *ie, size_t ie_len);
1178 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1179 const size_t supp_rates_len,
1180 const u8 *supp_rates);
1181 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1182 struct ieee802_11_elems *elems,
1183 enum ieee80211_band band);
1185 #ifdef CONFIG_MAC80211_NOINLINE
1186 #define debug_noinline noinline
1188 #define debug_noinline
1191 #endif /* IEEE80211_I_H */