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/iw_handler.h>
28 #include <net/mac80211.h>
32 struct ieee80211_local;
34 /* Maximum number of broadcast/multicast frames to buffer when some of the
35 * associated stations are using power saving. */
36 #define AP_MAX_BC_BUFFER 128
38 /* Maximum number of frames buffered to all STAs, including multicast frames.
39 * Note: increasing this limit increases the potential memory requirement. Each
40 * frame can be up to about 2 kB long. */
41 #define TOTAL_MAX_TX_BUFFER 512
43 /* Required encryption head and tailroom */
44 #define IEEE80211_ENCRYPT_HEADROOM 8
45 #define IEEE80211_ENCRYPT_TAILROOM 18
47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
48 * reception of at least three fragmented frames. This limit can be increased
49 * by changing this define, at the cost of slower frame reassembly and
50 * increased memory use (about 2 kB of RAM per entry). */
51 #define IEEE80211_FRAGMENT_MAX 4
54 * Time after which we ignore scan results and no longer report/use
57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
59 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
61 struct ieee80211_fragment_entry {
62 unsigned long first_frag_time;
64 unsigned int rx_queue;
65 unsigned int last_frag;
66 unsigned int extra_len;
67 struct sk_buff_head skb_list;
68 int ccmp; /* Whether fragments were encrypted with CCMP */
69 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
73 struct ieee80211_bss {
74 /* Yes, this is a hack */
75 struct cfg80211_bss cbss;
77 /* don't want to look up all the time */
79 u8 ssid[IEEE80211_MAX_SSID_LEN];
85 unsigned long last_probe_resp;
87 #ifdef CONFIG_MAC80211_MESH
93 #define IEEE80211_MAX_SUPP_RATES 32
94 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
95 size_t supp_rates_len;
98 * During assocation, we save an ERP value from a probe response so
99 * that we can feed ERP info to the driver when handling the
100 * association completes. these fields probably won't be up-to-date
101 * otherwise, you probably don't want to use them.
107 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
109 #ifdef CONFIG_MAC80211_MESH
110 return bss->mesh_cfg;
115 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
117 #ifdef CONFIG_MAC80211_MESH
123 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
125 #ifdef CONFIG_MAC80211_MESH
126 return bss->mesh_id_len;
132 typedef unsigned __bitwise__ ieee80211_tx_result;
133 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
134 #define TX_DROP ((__force ieee80211_tx_result) 1u)
135 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
137 #define IEEE80211_TX_FRAGMENTED BIT(0)
138 #define IEEE80211_TX_UNICAST BIT(1)
139 #define IEEE80211_TX_PS_BUFFERED BIT(2)
141 struct ieee80211_tx_data {
143 struct net_device *dev;
144 struct ieee80211_local *local;
145 struct ieee80211_sub_if_data *sdata;
146 struct sta_info *sta;
147 struct ieee80211_key *key;
149 struct ieee80211_channel *channel;
156 typedef unsigned __bitwise__ ieee80211_rx_result;
157 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
158 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
159 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
160 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
162 #define IEEE80211_RX_IN_SCAN BIT(0)
163 /* frame is destined to interface currently processed (incl. multicast frames) */
164 #define IEEE80211_RX_RA_MATCH BIT(1)
165 #define IEEE80211_RX_AMSDU BIT(2)
166 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
167 #define IEEE80211_RX_FRAGMENTED BIT(4)
169 struct ieee80211_rx_data {
171 struct net_device *dev;
172 struct ieee80211_local *local;
173 struct ieee80211_sub_if_data *sdata;
174 struct sta_info *sta;
175 struct ieee80211_key *key;
176 struct ieee80211_rx_status *status;
177 struct ieee80211_rate *rate;
180 int sent_ps_buffered;
188 int head_len, tail_len;
192 struct ieee80211_if_ap {
193 struct beacon_data *beacon;
195 struct list_head vlans;
197 /* yes, this looks ugly, but guarantees that we can later use
199 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
200 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
201 struct sk_buff_head ps_bc_buf;
202 atomic_t num_sta_ps; /* number of stations in PS mode */
206 struct ieee80211_if_wds {
207 struct sta_info *sta;
208 u8 remote_addr[ETH_ALEN];
211 struct ieee80211_if_vlan {
212 struct list_head list;
216 __u32 fwded_frames; /* Mesh forwarded frames */
217 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
218 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
219 atomic_t estab_plinks;
222 #define PREQ_Q_F_START 0x1
223 #define PREQ_Q_F_REFRESH 0x2
224 struct mesh_preq_queue {
225 struct list_head list;
230 /* flags used in struct ieee80211_if_managed.flags */
231 #define IEEE80211_STA_SSID_SET BIT(0)
232 #define IEEE80211_STA_BSSID_SET BIT(1)
233 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
234 #define IEEE80211_STA_AUTHENTICATED BIT(3)
235 #define IEEE80211_STA_ASSOCIATED BIT(4)
236 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
237 #define IEEE80211_STA_CREATE_IBSS BIT(6)
238 #define IEEE80211_STA_CONTROL_PORT BIT(7)
239 #define IEEE80211_STA_WMM_ENABLED BIT(8)
240 /* hole at 9, please re-use */
241 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
242 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
243 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
244 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
245 #define IEEE80211_STA_TKIP_WEP_USED BIT(14)
246 #define IEEE80211_STA_CSA_RECEIVED BIT(15)
247 #define IEEE80211_STA_MFP_ENABLED BIT(16)
248 #define IEEE80211_STA_EXT_SME BIT(17)
249 /* flags for MLME request */
250 #define IEEE80211_STA_REQ_SCAN 0
251 #define IEEE80211_STA_REQ_AUTH 1
252 #define IEEE80211_STA_REQ_RUN 2
254 /* bitfield of allowed auth algs */
255 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
256 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
257 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
258 #define IEEE80211_AUTH_ALG_FT BIT(3)
260 struct ieee80211_if_managed {
261 struct timer_list timer;
262 struct timer_list chswitch_timer;
263 struct work_struct work;
264 struct work_struct chswitch_work;
265 struct work_struct beacon_loss_work;
267 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
269 u8 ssid[IEEE80211_MAX_SSID_LEN];
273 IEEE80211_STA_MLME_DISABLED,
274 IEEE80211_STA_MLME_DIRECT_PROBE,
275 IEEE80211_STA_MLME_AUTHENTICATE,
276 IEEE80211_STA_MLME_ASSOCIATE,
277 IEEE80211_STA_MLME_ASSOCIATED,
282 u8 *extra_ie; /* to be added to the end of AssocReq */
285 /* The last AssocReq/Resp IEs */
286 u8 *assocreq_ies, *assocresp_ies;
287 size_t assocreq_ies_len, assocresp_ies_len;
289 struct sk_buff_head skb_queue;
291 int assoc_scan_tries; /* number of scans done pre-association */
292 int direct_probe_tries; /* retries for direct probes */
293 int auth_tries; /* retries for auth req */
294 int assoc_tries; /* retries for assoc req */
296 unsigned long timers_running; /* used for quiesce/restart */
297 bool powersave; /* powersave requested for this iface */
299 unsigned long request;
301 unsigned long last_probe;
302 unsigned long last_beacon;
306 unsigned int auth_algs; /* bitfield of allowed auth algs */
307 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
308 int auth_transaction;
313 IEEE80211_MFP_DISABLED,
314 IEEE80211_MFP_OPTIONAL,
315 IEEE80211_MFP_REQUIRED
316 } mfp; /* management frame protection */
318 int wmm_last_param_set;
320 /* Extra IE data for management frames */
322 size_t sme_auth_ie_len;
325 enum ieee80211_ibss_request {
326 IEEE80211_IBSS_REQ_RUN = 0,
329 struct ieee80211_if_ibss {
330 struct timer_list timer;
331 struct work_struct work;
333 struct sk_buff_head skb_queue;
335 unsigned long request;
336 unsigned long last_scan_completed;
344 u8 ssid[IEEE80211_MAX_SSID_LEN];
347 struct ieee80211_channel *channel;
349 unsigned long ibss_join_req;
350 /* probe response/beacon for IBSS */
351 struct sk_buff *presp, *skb;
354 IEEE80211_IBSS_MLME_SEARCH,
355 IEEE80211_IBSS_MLME_JOINED,
359 struct ieee80211_if_mesh {
360 struct work_struct work;
361 struct timer_list housekeeping_timer;
362 struct timer_list mesh_path_timer;
363 struct sk_buff_head skb_queue;
365 unsigned long timers_running;
369 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
371 /* Active Path Selection Protocol Identifier */
373 /* Active Path Selection Metric Identifier */
375 /* Congestion Control Mode Identifier */
377 /* Local mesh Destination Sequence Number */
379 /* Last used PREQ ID */
382 /* Timestamp of last DSN update */
383 unsigned long last_dsn_update;
384 /* Timestamp of last DSN sent */
385 unsigned long last_preq;
386 struct mesh_rmc *rmc;
387 spinlock_t mesh_preq_queue_lock;
388 struct mesh_preq_queue preq_queue;
390 struct mesh_stats mshstats;
391 struct mesh_config mshcfg;
393 bool accepting_plinks;
396 #ifdef CONFIG_MAC80211_MESH
397 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
398 do { (msh)->mshstats.name++; } while (0)
400 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
405 * enum ieee80211_sub_if_data_flags - virtual interface flags
407 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
408 * @IEEE80211_SDATA_PROMISC: interface is promisc
409 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
410 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
411 * associated stations and deliver multicast frames both
412 * back to wireless media and to the local net stack.
414 enum ieee80211_sub_if_data_flags {
415 IEEE80211_SDATA_ALLMULTI = BIT(0),
416 IEEE80211_SDATA_PROMISC = BIT(1),
417 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
418 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
421 struct ieee80211_sub_if_data {
422 struct list_head list;
424 struct wireless_dev wdev;
427 struct list_head key_list;
429 struct net_device *dev;
430 struct ieee80211_local *local;
434 int drop_unencrypted;
437 * keep track of whether the HT opmode (stored in
438 * vif.bss_info.ht_operation_mode) is valid.
440 bool ht_opmode_valid;
442 /* Fragment table for host-based reassembly */
443 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
444 unsigned int fragment_next;
446 #define NUM_DEFAULT_KEYS 4
447 #define NUM_DEFAULT_MGMT_KEYS 2
448 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
449 struct ieee80211_key *default_key;
450 struct ieee80211_key *default_mgmt_key;
455 * AP this belongs to: self in AP mode and
456 * corresponding AP in VLAN mode, NULL for
457 * all others (might be needed later in IBSS)
459 struct ieee80211_if_ap *bss;
461 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
462 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
465 struct ieee80211_if_ap ap;
466 struct ieee80211_if_wds wds;
467 struct ieee80211_if_vlan vlan;
468 struct ieee80211_if_managed mgd;
469 struct ieee80211_if_ibss ibss;
470 #ifdef CONFIG_MAC80211_MESH
471 struct ieee80211_if_mesh mesh;
476 #ifdef CONFIG_MAC80211_DEBUGFS
477 struct dentry *debugfsdir;
480 struct dentry *drop_unencrypted;
481 struct dentry *state;
482 struct dentry *bssid;
483 struct dentry *prev_bssid;
484 struct dentry *ssid_len;
486 struct dentry *ap_capab;
487 struct dentry *capab;
488 struct dentry *extra_ie_len;
489 struct dentry *auth_tries;
490 struct dentry *assoc_tries;
491 struct dentry *auth_algs;
492 struct dentry *auth_alg;
493 struct dentry *auth_transaction;
494 struct dentry *flags;
495 struct dentry *force_unicast_rateidx;
496 struct dentry *max_ratectrl_rateidx;
499 struct dentry *drop_unencrypted;
500 struct dentry *num_sta_ps;
501 struct dentry *dtim_count;
502 struct dentry *force_unicast_rateidx;
503 struct dentry *max_ratectrl_rateidx;
504 struct dentry *num_buffered_multicast;
507 struct dentry *drop_unencrypted;
509 struct dentry *force_unicast_rateidx;
510 struct dentry *max_ratectrl_rateidx;
513 struct dentry *drop_unencrypted;
514 struct dentry *force_unicast_rateidx;
515 struct dentry *max_ratectrl_rateidx;
522 struct dentry *default_key;
523 struct dentry *default_mgmt_key;
526 #ifdef CONFIG_MAC80211_MESH
527 struct dentry *mesh_stats_dir;
529 struct dentry *fwded_frames;
530 struct dentry *dropped_frames_ttl;
531 struct dentry *dropped_frames_no_route;
532 struct dentry *estab_plinks;
533 struct timer_list mesh_path_timer;
536 struct dentry *mesh_config_dir;
538 struct dentry *dot11MeshRetryTimeout;
539 struct dentry *dot11MeshConfirmTimeout;
540 struct dentry *dot11MeshHoldingTimeout;
541 struct dentry *dot11MeshMaxRetries;
542 struct dentry *dot11MeshTTL;
543 struct dentry *auto_open_plinks;
544 struct dentry *dot11MeshMaxPeerLinks;
545 struct dentry *dot11MeshHWMPactivePathTimeout;
546 struct dentry *dot11MeshHWMPpreqMinInterval;
547 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
548 struct dentry *dot11MeshHWMPmaxPREQretries;
549 struct dentry *path_refresh_time;
550 struct dentry *min_discovery_timeout;
555 /* must be last, dynamically sized area in this! */
556 struct ieee80211_vif vif;
560 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
562 return container_of(p, struct ieee80211_sub_if_data, vif);
566 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
567 u8 mesh_id_len, u8 *mesh_id)
569 #ifdef CONFIG_MAC80211_MESH
570 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
571 ifmsh->mesh_id_len = mesh_id_len;
572 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
579 IEEE80211_RX_MSG = 1,
580 IEEE80211_TX_STATUS_MSG = 2,
581 IEEE80211_DELBA_MSG = 3,
582 IEEE80211_ADDBA_MSG = 4,
585 enum queue_stop_reason {
586 IEEE80211_QUEUE_STOP_REASON_DRIVER,
587 IEEE80211_QUEUE_STOP_REASON_PS,
588 IEEE80211_QUEUE_STOP_REASON_CSA,
589 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
590 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
591 IEEE80211_QUEUE_STOP_REASON_PENDING,
592 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
595 struct ieee80211_master_priv {
596 struct ieee80211_local *local;
599 struct ieee80211_local {
600 /* embed the driver visible part.
601 * don't cast (use the static inlines below), but we keep
602 * it first anyway so they become a no-op */
603 struct ieee80211_hw hw;
605 const struct ieee80211_ops *ops;
607 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
608 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
609 spinlock_t queue_stop_reason_lock;
611 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
613 int monitors, cooked_mntrs;
614 /* number of interfaces with corresponding FIF_ flags */
615 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
616 unsigned int filter_flags; /* FIF_* */
617 struct iw_statistics wstats;
618 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
621 * suspended is true if we finished all the suspend _and_ we have
622 * not yet come up from resume. This is to be used by mac80211
623 * to ensure driver sanity during suspend and mac80211's own
624 * sanity. It can eventually be used for WoW as well.
629 * quiescing is true during the suspend process _only_ to
630 * ease timer cancelling etc.
634 int tx_headroom; /* required headroom for hardware/radiotap */
636 /* Tasklet and skb queue to process calls from IRQ mode. All frames
637 * added to skb_queue will be processed, but frames in
638 * skb_queue_unreliable may be dropped if the total length of these
639 * queues increases over the limit. */
640 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
641 struct tasklet_struct tasklet;
642 struct sk_buff_head skb_queue;
643 struct sk_buff_head skb_queue_unreliable;
647 * The lock only protects the list, hash, timer and counter
648 * against manipulation, reads are done in RCU. Additionally,
649 * the lock protects each BSS's TIM bitmap.
652 unsigned long num_sta;
653 struct list_head sta_list;
654 struct sta_info *sta_hash[STA_HASH_SIZE];
655 struct timer_list sta_cleanup;
657 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
658 struct tasklet_struct tx_pending_tasklet;
661 * This lock is used to prevent concurrent A-MPDU
662 * session start/stop processing, this thus also
663 * synchronises the ->ampdu_action() callback to
664 * drivers and limits it to one at a time.
666 spinlock_t ampdu_lock;
668 /* number of interfaces with corresponding IFF_ flags */
669 atomic_t iff_allmultis, iff_promiscs;
671 struct rate_control_ref *rate_ctrl;
673 struct crypto_blkcipher *wep_tx_tfm;
674 struct crypto_blkcipher *wep_rx_tfm;
678 struct list_head interfaces;
679 struct mutex iflist_mtx;
682 * Key lock, protects sdata's key_list and sta_info's
683 * key pointers (write access, they're RCU.)
688 /* Scanning and BSS list */
689 struct mutex scan_mtx;
690 bool sw_scanning, hw_scanning;
691 struct cfg80211_ssid scan_ssid;
692 struct cfg80211_scan_request int_scan_req;
693 struct cfg80211_scan_request *scan_req;
694 struct ieee80211_channel *scan_channel;
697 int scan_channel_idx;
700 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
701 struct delayed_work scan_work;
702 struct ieee80211_sub_if_data *scan_sdata;
703 enum nl80211_channel_type oper_channel_type;
704 struct ieee80211_channel *oper_channel, *csa_channel;
707 /* dot11CountersTable */
708 u32 dot11TransmittedFragmentCount;
709 u32 dot11MulticastTransmittedFrameCount;
710 u32 dot11FailedCount;
712 u32 dot11MultipleRetryCount;
713 u32 dot11FrameDuplicateCount;
714 u32 dot11ReceivedFragmentCount;
715 u32 dot11MulticastReceivedFrameCount;
716 u32 dot11TransmittedFrameCount;
718 #ifdef CONFIG_MAC80211_LEDS
719 int tx_led_counter, rx_led_counter;
720 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
721 char tx_led_name[32], rx_led_name[32],
722 assoc_led_name[32], radio_led_name[32];
725 #ifdef CONFIG_MAC80211_DEBUGFS
726 struct work_struct sta_debugfs_add;
729 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
730 /* TX/RX handler statistics */
731 unsigned int tx_handlers_drop;
732 unsigned int tx_handlers_queued;
733 unsigned int tx_handlers_drop_unencrypted;
734 unsigned int tx_handlers_drop_fragment;
735 unsigned int tx_handlers_drop_wep;
736 unsigned int tx_handlers_drop_not_assoc;
737 unsigned int tx_handlers_drop_unauth_port;
738 unsigned int rx_handlers_drop;
739 unsigned int rx_handlers_queued;
740 unsigned int rx_handlers_drop_nullfunc;
741 unsigned int rx_handlers_drop_defrag;
742 unsigned int rx_handlers_drop_short;
743 unsigned int rx_handlers_drop_passive_scan;
744 unsigned int tx_expand_skb_head;
745 unsigned int tx_expand_skb_head_cloned;
746 unsigned int rx_expand_skb_head;
747 unsigned int rx_expand_skb_head2;
748 unsigned int rx_handlers_fragments;
749 unsigned int tx_status_drop;
750 #define I802_DEBUG_INC(c) (c)++
751 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
752 #define I802_DEBUG_INC(c) do { } while (0)
753 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
756 int total_ps_buffered; /* total number of all buffered unicast and
757 * multicast packets for power saving stations
759 int wifi_wme_noack_test;
760 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
764 * PS can only be enabled when we have exactly one managed
765 * interface (and monitors) in PS, this then points there.
767 struct ieee80211_sub_if_data *ps_sdata;
768 struct work_struct dynamic_ps_enable_work;
769 struct work_struct dynamic_ps_disable_work;
770 struct timer_list dynamic_ps_timer;
771 struct notifier_block network_latency_notifier;
773 int user_power_level; /* in dBm */
774 int power_constr_level; /* in dBm */
776 struct work_struct restart_work;
778 #ifdef CONFIG_MAC80211_DEBUGFS
779 struct local_debugfsdentries {
780 struct dentry *rcdir;
781 struct dentry *rcname;
782 struct dentry *frequency;
783 struct dentry *total_ps_buffered;
784 struct dentry *wep_iv;
786 struct dentry *queues;
787 struct dentry *reset;
788 struct dentry *noack;
789 struct dentry *statistics;
790 struct local_debugfsdentries_statsdentries {
791 struct dentry *transmitted_fragment_count;
792 struct dentry *multicast_transmitted_frame_count;
793 struct dentry *failed_count;
794 struct dentry *retry_count;
795 struct dentry *multiple_retry_count;
796 struct dentry *frame_duplicate_count;
797 struct dentry *received_fragment_count;
798 struct dentry *multicast_received_frame_count;
799 struct dentry *transmitted_frame_count;
800 struct dentry *wep_undecryptable_count;
801 struct dentry *num_scans;
802 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
803 struct dentry *tx_handlers_drop;
804 struct dentry *tx_handlers_queued;
805 struct dentry *tx_handlers_drop_unencrypted;
806 struct dentry *tx_handlers_drop_fragment;
807 struct dentry *tx_handlers_drop_wep;
808 struct dentry *tx_handlers_drop_not_assoc;
809 struct dentry *tx_handlers_drop_unauth_port;
810 struct dentry *rx_handlers_drop;
811 struct dentry *rx_handlers_queued;
812 struct dentry *rx_handlers_drop_nullfunc;
813 struct dentry *rx_handlers_drop_defrag;
814 struct dentry *rx_handlers_drop_short;
815 struct dentry *rx_handlers_drop_passive_scan;
816 struct dentry *tx_expand_skb_head;
817 struct dentry *tx_expand_skb_head_cloned;
818 struct dentry *rx_expand_skb_head;
819 struct dentry *rx_expand_skb_head2;
820 struct dentry *rx_handlers_fragments;
821 struct dentry *tx_status_drop;
823 struct dentry *dot11ACKFailureCount;
824 struct dentry *dot11RTSFailureCount;
825 struct dentry *dot11FCSErrorCount;
826 struct dentry *dot11RTSSuccessCount;
828 struct dentry *stations;
834 static inline struct ieee80211_sub_if_data *
835 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
837 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
839 BUG_ON(!local || local->mdev == dev);
841 return netdev_priv(dev);
844 /* this struct represents 802.11n's RA/TID combination */
845 struct ieee80211_ra_tid {
850 /* Parsed Information Elements */
851 struct ieee802_11_elems {
855 /* pointers to IEs */
861 struct ieee80211_tim_ie *tim;
870 struct ieee80211_ht_cap *ht_cap_elem;
871 struct ieee80211_ht_info *ht_info_elem;
881 u8 *quiet_elem; /* first quite element */
884 /* length of them, respectively */
896 u8 ext_supp_rates_len;
905 u8 ch_switch_elem_len;
907 u8 pwr_constr_elem_len;
909 u8 num_of_quiet_elem; /* can be more the one */
913 static inline struct ieee80211_local *hw_to_local(
914 struct ieee80211_hw *hw)
916 return container_of(hw, struct ieee80211_local, hw);
919 static inline struct ieee80211_hw *local_to_hw(
920 struct ieee80211_local *local)
926 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
928 return compare_ether_addr(raddr, addr) == 0 ||
929 is_broadcast_ether_addr(raddr);
933 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
934 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
935 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
937 void ieee80211_configure_filter(struct ieee80211_local *local);
938 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
940 /* wireless extensions */
941 extern const struct iw_handler_def ieee80211_iw_handler_def;
944 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
945 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
947 struct ieee80211_rx_status *rx_status);
948 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
949 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
950 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
951 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
952 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
953 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
954 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
955 void ieee80211_send_pspoll(struct ieee80211_local *local,
956 struct ieee80211_sub_if_data *sdata);
957 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
958 int ieee80211_max_network_latency(struct notifier_block *nb,
959 unsigned long data, void *dummy);
960 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
961 struct ieee80211_channel_sw_ie *sw_elem,
962 struct ieee80211_bss *bss);
963 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
964 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
967 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
968 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
970 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
971 struct ieee80211_rx_status *rx_status);
972 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
973 u8 *bssid, u8 *addr, u32 supp_rates);
974 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
975 struct cfg80211_ibss_params *params);
976 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
977 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
978 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
980 /* scan/BSS handling */
981 void ieee80211_scan_work(struct work_struct *work);
982 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
983 const u8 *ssid, u8 ssid_len);
984 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
985 struct cfg80211_scan_request *req);
986 int ieee80211_scan_results(struct ieee80211_local *local,
987 struct iw_request_info *info,
988 char *buf, size_t len);
989 void ieee80211_scan_cancel(struct ieee80211_local *local);
991 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
993 struct ieee80211_rx_status *rx_status);
994 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
995 const char *ie, size_t len);
997 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
998 struct ieee80211_bss *
999 ieee80211_bss_info_update(struct ieee80211_local *local,
1000 struct ieee80211_rx_status *rx_status,
1001 struct ieee80211_mgmt *mgmt,
1003 struct ieee802_11_elems *elems,
1004 struct ieee80211_channel *channel,
1006 struct ieee80211_bss *
1007 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1008 u8 *ssid, u8 ssid_len);
1009 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1010 struct ieee80211_bss *bss);
1011 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
1012 int freq, u8 *ssid, u8 ssid_len);
1014 /* interface handling */
1015 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1016 struct net_device **new_dev, enum nl80211_iftype type,
1017 struct vif_params *params);
1018 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1019 enum nl80211_iftype type);
1020 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1021 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1022 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1023 void ieee80211_recalc_idle(struct ieee80211_local *local);
1026 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1027 void ieee80211_tx_pending(unsigned long data);
1028 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
1029 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1030 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1033 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1034 struct ieee80211_ht_cap *ht_cap_ie,
1035 struct ieee80211_sta_ht_cap *ht_cap);
1036 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1037 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1038 const u8 *da, u16 tid,
1039 u16 initiator, u16 reason_code);
1041 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1042 u16 tid, u16 initiator, u16 reason);
1043 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1044 u16 initiator, u16 reason);
1045 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1046 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1047 struct sta_info *sta,
1048 struct ieee80211_mgmt *mgmt, size_t len);
1049 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1050 struct sta_info *sta,
1051 struct ieee80211_mgmt *mgmt,
1053 void ieee80211_process_addba_request(struct ieee80211_local *local,
1054 struct sta_info *sta,
1055 struct ieee80211_mgmt *mgmt,
1058 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1059 enum ieee80211_back_parties initiator);
1061 /* Spectrum management */
1062 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1063 struct ieee80211_mgmt *mgmt,
1066 /* Suspend/resume and hw reconfiguration */
1067 int ieee80211_reconfig(struct ieee80211_local *local);
1070 int __ieee80211_suspend(struct ieee80211_hw *hw);
1072 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1074 return ieee80211_reconfig(hw_to_local(hw));
1077 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1082 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1088 /* utility functions/constants */
1089 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1090 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1091 enum nl80211_iftype type);
1092 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1093 int rate, int erp, int short_preamble);
1094 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1095 struct ieee80211_hdr *hdr, const u8 *tsc);
1096 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1097 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1099 void ieee802_11_parse_elems(u8 *start, size_t len,
1100 struct ieee802_11_elems *elems);
1101 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1102 struct ieee802_11_elems *elems,
1103 u64 filter, u32 crc);
1104 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1105 enum ieee80211_band band);
1107 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1108 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1109 void ieee80211_dynamic_ps_timer(unsigned long data);
1110 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1111 struct ieee80211_sub_if_data *sdata,
1113 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1114 struct ieee80211_hdr *hdr);
1115 void ieee80211_beacon_loss_work(struct work_struct *work);
1117 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1118 enum queue_stop_reason reason);
1119 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1120 enum queue_stop_reason reason);
1121 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1122 enum queue_stop_reason reason);
1123 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1124 enum queue_stop_reason reason);
1125 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1126 struct sk_buff *skb);
1127 int ieee80211_add_pending_skbs(struct ieee80211_local *local,
1128 struct sk_buff_head *skbs);
1130 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1131 u16 transaction, u16 auth_alg,
1132 u8 *extra, size_t extra_len,
1133 const u8 *bssid, int encrypt);
1134 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1135 const u8 *ie, size_t ie_len);
1136 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1137 const u8 *ssid, size_t ssid_len,
1138 const u8 *ie, size_t ie_len);
1140 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1141 const size_t supp_rates_len,
1142 const u8 *supp_rates);
1143 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1144 struct ieee802_11_elems *elems,
1145 enum ieee80211_band band);
1147 #ifdef CONFIG_MAC80211_NOINLINE
1148 #define debug_noinline noinline
1150 #define debug_noinline
1153 #endif /* IEEE80211_I_H */