2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/if_ether.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/workqueue.h>
23 #include <linux/types.h>
24 #include <linux/spinlock.h>
25 #include <linux/etherdevice.h>
26 #include <net/cfg80211.h>
27 #include <net/wireless.h>
28 #include <net/iw_handler.h>
29 #include <net/mac80211.h>
33 struct ieee80211_local;
35 /* Maximum number of broadcast/multicast frames to buffer when some of the
36 * associated stations are using power saving. */
37 #define AP_MAX_BC_BUFFER 128
39 /* Maximum number of frames buffered to all STAs, including multicast frames.
40 * Note: increasing this limit increases the potential memory requirement. Each
41 * frame can be up to about 2 kB long. */
42 #define TOTAL_MAX_TX_BUFFER 512
44 /* Required encryption head and tailroom */
45 #define IEEE80211_ENCRYPT_HEADROOM 8
46 #define IEEE80211_ENCRYPT_TAILROOM 18
48 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
49 * reception of at least three fragmented frames. This limit can be increased
50 * by changing this define, at the cost of slower frame reassembly and
51 * increased memory use (about 2 kB of RAM per entry). */
52 #define IEEE80211_FRAGMENT_MAX 4
55 * Time after which we ignore scan results and no longer report/use
58 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
60 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
62 struct ieee80211_fragment_entry {
63 unsigned long first_frag_time;
65 unsigned int rx_queue;
66 unsigned int last_frag;
67 unsigned int extra_len;
68 struct sk_buff_head skb_list;
69 int ccmp; /* Whether fragments were encrypted with CCMP */
70 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
74 struct ieee80211_bss {
75 /* Yes, this is a hack */
76 struct cfg80211_bss cbss;
78 /* don't want to look up all the time */
80 u8 ssid[IEEE80211_MAX_SSID_LEN];
86 unsigned long last_probe_resp;
88 #ifdef CONFIG_MAC80211_MESH
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
99 * During assocation, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
108 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
110 #ifdef CONFIG_MAC80211_MESH
111 return bss->mesh_cfg;
116 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
118 #ifdef CONFIG_MAC80211_MESH
124 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
126 #ifdef CONFIG_MAC80211_MESH
127 return bss->mesh_id_len;
133 typedef unsigned __bitwise__ ieee80211_tx_result;
134 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
135 #define TX_DROP ((__force ieee80211_tx_result) 1u)
136 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
138 #define IEEE80211_TX_FRAGMENTED BIT(0)
139 #define IEEE80211_TX_UNICAST BIT(1)
140 #define IEEE80211_TX_PS_BUFFERED BIT(2)
142 struct ieee80211_tx_data {
144 struct net_device *dev;
145 struct ieee80211_local *local;
146 struct ieee80211_sub_if_data *sdata;
147 struct sta_info *sta;
148 struct ieee80211_key *key;
150 struct ieee80211_channel *channel;
157 typedef unsigned __bitwise__ ieee80211_rx_result;
158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
163 #define IEEE80211_RX_IN_SCAN BIT(0)
164 /* frame is destined to interface currently processed (incl. multicast frames) */
165 #define IEEE80211_RX_RA_MATCH BIT(1)
166 #define IEEE80211_RX_AMSDU BIT(2)
167 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
168 #define IEEE80211_RX_FRAGMENTED BIT(4)
170 struct ieee80211_rx_data {
172 struct net_device *dev;
173 struct ieee80211_local *local;
174 struct ieee80211_sub_if_data *sdata;
175 struct sta_info *sta;
176 struct ieee80211_key *key;
177 struct ieee80211_rx_status *status;
178 struct ieee80211_rate *rate;
181 int sent_ps_buffered;
189 int head_len, tail_len;
193 struct ieee80211_if_ap {
194 struct beacon_data *beacon;
196 struct list_head vlans;
198 /* yes, this looks ugly, but guarantees that we can later use
200 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
201 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
202 struct sk_buff_head ps_bc_buf;
203 atomic_t num_sta_ps; /* number of stations in PS mode */
207 struct ieee80211_if_wds {
208 struct sta_info *sta;
209 u8 remote_addr[ETH_ALEN];
212 struct ieee80211_if_vlan {
213 struct list_head list;
217 __u32 fwded_frames; /* Mesh forwarded frames */
218 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
219 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
220 atomic_t estab_plinks;
223 #define PREQ_Q_F_START 0x1
224 #define PREQ_Q_F_REFRESH 0x2
225 struct mesh_preq_queue {
226 struct list_head list;
231 /* flags used in struct ieee80211_if_managed.flags */
232 #define IEEE80211_STA_SSID_SET BIT(0)
233 #define IEEE80211_STA_BSSID_SET BIT(1)
234 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
235 #define IEEE80211_STA_AUTHENTICATED BIT(3)
236 #define IEEE80211_STA_ASSOCIATED BIT(4)
237 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
238 #define IEEE80211_STA_CREATE_IBSS BIT(6)
239 /* hole at 7, please re-use */
240 #define IEEE80211_STA_WMM_ENABLED BIT(8)
241 /* hole at 9, please re-use */
242 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
243 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
244 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
245 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
246 #define IEEE80211_STA_TKIP_WEP_USED BIT(14)
247 #define IEEE80211_STA_CSA_RECEIVED BIT(15)
248 #define IEEE80211_STA_MFP_ENABLED BIT(16)
249 #define IEEE80211_STA_EXT_SME BIT(17)
250 /* flags for MLME request */
251 #define IEEE80211_STA_REQ_SCAN 0
252 #define IEEE80211_STA_REQ_DIRECT_PROBE 1
253 #define IEEE80211_STA_REQ_AUTH 2
254 #define IEEE80211_STA_REQ_RUN 3
256 /* bitfield of allowed auth algs */
257 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
258 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
259 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
260 #define IEEE80211_AUTH_ALG_FT BIT(3)
262 struct ieee80211_if_managed {
263 struct timer_list timer;
264 struct timer_list chswitch_timer;
265 struct work_struct work;
266 struct work_struct chswitch_work;
267 struct work_struct beacon_loss_work;
269 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
271 u8 ssid[IEEE80211_MAX_SSID_LEN];
275 IEEE80211_STA_MLME_DISABLED,
276 IEEE80211_STA_MLME_DIRECT_PROBE,
277 IEEE80211_STA_MLME_AUTHENTICATE,
278 IEEE80211_STA_MLME_ASSOCIATE,
279 IEEE80211_STA_MLME_ASSOCIATED,
284 u8 *extra_ie; /* to be added to the end of AssocReq */
287 /* The last AssocReq/Resp IEs */
288 u8 *assocreq_ies, *assocresp_ies;
289 size_t assocreq_ies_len, assocresp_ies_len;
291 struct sk_buff_head skb_queue;
293 int assoc_scan_tries; /* number of scans done pre-association */
294 int direct_probe_tries; /* retries for direct probes */
295 int auth_tries; /* retries for auth req */
296 int assoc_tries; /* retries for assoc req */
298 bool powersave; /* powersave requested for this iface */
300 unsigned long request;
302 unsigned long last_probe;
303 unsigned long last_beacon;
307 unsigned int auth_algs; /* bitfield of allowed auth algs */
308 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
309 int auth_transaction;
312 IEEE80211_MFP_DISABLED,
313 IEEE80211_MFP_OPTIONAL,
314 IEEE80211_MFP_REQUIRED
315 } mfp; /* management frame protection */
317 int wmm_last_param_set;
319 /* Extra IE data for management frames */
321 size_t sme_auth_ie_len;
324 enum ieee80211_ibss_flags {
325 IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
326 IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
327 IEEE80211_IBSS_BSSID_SET = BIT(2),
328 IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
329 IEEE80211_IBSS_SSID_SET = BIT(4),
332 enum ieee80211_ibss_request {
333 IEEE80211_IBSS_REQ_RUN = 0,
336 struct ieee80211_if_ibss {
337 struct timer_list timer;
338 struct work_struct work;
340 struct sk_buff_head skb_queue;
342 u8 ssid[IEEE80211_MAX_SSID_LEN];
349 unsigned long request;
351 unsigned long ibss_join_req;
352 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
355 IEEE80211_IBSS_MLME_SEARCH,
356 IEEE80211_IBSS_MLME_JOINED,
360 struct ieee80211_if_mesh {
361 struct work_struct work;
362 struct timer_list housekeeping_timer;
363 struct timer_list mesh_path_timer;
364 struct sk_buff_head skb_queue;
368 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
370 /* Active Path Selection Protocol Identifier */
372 /* Active Path Selection Metric Identifier */
374 /* Congestion Control Mode Identifier */
376 /* Local mesh Destination Sequence Number */
378 /* Last used PREQ ID */
381 /* Timestamp of last DSN update */
382 unsigned long last_dsn_update;
383 /* Timestamp of last DSN sent */
384 unsigned long last_preq;
385 struct mesh_rmc *rmc;
386 spinlock_t mesh_preq_queue_lock;
387 struct mesh_preq_queue preq_queue;
389 struct mesh_stats mshstats;
390 struct mesh_config mshcfg;
392 bool accepting_plinks;
395 #ifdef CONFIG_MAC80211_MESH
396 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
397 do { (msh)->mshstats.name++; } while (0)
399 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
404 * enum ieee80211_sub_if_data_flags - virtual interface flags
406 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
407 * @IEEE80211_SDATA_PROMISC: interface is promisc
408 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
409 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
410 * associated stations and deliver multicast frames both
411 * back to wireless media and to the local net stack.
413 enum ieee80211_sub_if_data_flags {
414 IEEE80211_SDATA_ALLMULTI = BIT(0),
415 IEEE80211_SDATA_PROMISC = BIT(1),
416 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
417 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
420 struct ieee80211_sub_if_data {
421 struct list_head list;
423 struct wireless_dev wdev;
426 struct list_head key_list;
428 struct net_device *dev;
429 struct ieee80211_local *local;
433 int drop_unencrypted;
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 *state;
475 struct dentry *bssid;
476 struct dentry *prev_bssid;
477 struct dentry *ssid_len;
479 struct dentry *ap_capab;
480 struct dentry *capab;
481 struct dentry *extra_ie_len;
482 struct dentry *auth_tries;
483 struct dentry *assoc_tries;
484 struct dentry *auth_algs;
485 struct dentry *auth_alg;
486 struct dentry *auth_transaction;
487 struct dentry *flags;
488 struct dentry *force_unicast_rateidx;
489 struct dentry *max_ratectrl_rateidx;
492 struct dentry *drop_unencrypted;
493 struct dentry *num_sta_ps;
494 struct dentry *dtim_count;
495 struct dentry *force_unicast_rateidx;
496 struct dentry *max_ratectrl_rateidx;
497 struct dentry *num_buffered_multicast;
500 struct dentry *drop_unencrypted;
502 struct dentry *force_unicast_rateidx;
503 struct dentry *max_ratectrl_rateidx;
506 struct dentry *drop_unencrypted;
507 struct dentry *force_unicast_rateidx;
508 struct dentry *max_ratectrl_rateidx;
515 struct dentry *default_key;
516 struct dentry *default_mgmt_key;
519 #ifdef CONFIG_MAC80211_MESH
520 struct dentry *mesh_stats_dir;
522 struct dentry *fwded_frames;
523 struct dentry *dropped_frames_ttl;
524 struct dentry *dropped_frames_no_route;
525 struct dentry *estab_plinks;
526 struct timer_list mesh_path_timer;
529 struct dentry *mesh_config_dir;
531 struct dentry *dot11MeshRetryTimeout;
532 struct dentry *dot11MeshConfirmTimeout;
533 struct dentry *dot11MeshHoldingTimeout;
534 struct dentry *dot11MeshMaxRetries;
535 struct dentry *dot11MeshTTL;
536 struct dentry *auto_open_plinks;
537 struct dentry *dot11MeshMaxPeerLinks;
538 struct dentry *dot11MeshHWMPactivePathTimeout;
539 struct dentry *dot11MeshHWMPpreqMinInterval;
540 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
541 struct dentry *dot11MeshHWMPmaxPREQretries;
542 struct dentry *path_refresh_time;
543 struct dentry *min_discovery_timeout;
548 /* must be last, dynamically sized area in this! */
549 struct ieee80211_vif vif;
553 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
555 return container_of(p, struct ieee80211_sub_if_data, vif);
559 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
560 u8 mesh_id_len, u8 *mesh_id)
562 #ifdef CONFIG_MAC80211_MESH
563 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
564 ifmsh->mesh_id_len = mesh_id_len;
565 memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
572 IEEE80211_RX_MSG = 1,
573 IEEE80211_TX_STATUS_MSG = 2,
574 IEEE80211_DELBA_MSG = 3,
575 IEEE80211_ADDBA_MSG = 4,
578 enum queue_stop_reason {
579 IEEE80211_QUEUE_STOP_REASON_DRIVER,
580 IEEE80211_QUEUE_STOP_REASON_PS,
581 IEEE80211_QUEUE_STOP_REASON_CSA,
582 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
583 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
584 IEEE80211_QUEUE_STOP_REASON_PENDING,
587 struct ieee80211_master_priv {
588 struct ieee80211_local *local;
591 struct ieee80211_local {
592 /* embed the driver visible part.
593 * don't cast (use the static inlines below), but we keep
594 * it first anyway so they become a no-op */
595 struct ieee80211_hw hw;
597 const struct ieee80211_ops *ops;
599 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
600 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
601 spinlock_t queue_stop_reason_lock;
603 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
605 int monitors, cooked_mntrs;
606 /* number of interfaces with corresponding FIF_ flags */
607 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
608 unsigned int filter_flags; /* FIF_* */
609 struct iw_statistics wstats;
610 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
611 int tx_headroom; /* required headroom for hardware/radiotap */
613 /* Tasklet and skb queue to process calls from IRQ mode. All frames
614 * added to skb_queue will be processed, but frames in
615 * skb_queue_unreliable may be dropped if the total length of these
616 * queues increases over the limit. */
617 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
618 struct tasklet_struct tasklet;
619 struct sk_buff_head skb_queue;
620 struct sk_buff_head skb_queue_unreliable;
624 * The lock only protects the list, hash, timer and counter
625 * against manipulation, reads are done in RCU. Additionally,
626 * the lock protects each BSS's TIM bitmap.
629 unsigned long num_sta;
630 struct list_head sta_list;
631 struct list_head sta_flush_list;
632 struct work_struct sta_flush_work;
633 struct sta_info *sta_hash[STA_HASH_SIZE];
634 struct timer_list sta_cleanup;
636 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
637 struct tasklet_struct tx_pending_tasklet;
640 * This lock is used to prevent concurrent A-MPDU
641 * session start/stop processing, this thus also
642 * synchronises the ->ampdu_action() callback to
643 * drivers and limits it to one at a time.
645 spinlock_t ampdu_lock;
647 /* number of interfaces with corresponding IFF_ flags */
648 atomic_t iff_allmultis, iff_promiscs;
650 struct rate_control_ref *rate_ctrl;
653 int fragmentation_threshold;
655 struct crypto_blkcipher *wep_tx_tfm;
656 struct crypto_blkcipher *wep_rx_tfm;
660 struct list_head interfaces;
661 struct mutex iflist_mtx;
664 * Key lock, protects sdata's key_list and sta_info's
665 * key pointers (write access, they're RCU.)
670 /* Scanning and BSS list */
671 bool sw_scanning, hw_scanning;
672 struct cfg80211_ssid scan_ssid;
673 struct cfg80211_scan_request int_scan_req;
674 struct cfg80211_scan_request *scan_req;
675 struct ieee80211_channel *scan_channel;
678 int scan_channel_idx;
681 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
682 unsigned long last_scan_completed;
683 struct delayed_work scan_work;
684 struct ieee80211_sub_if_data *scan_sdata;
685 enum nl80211_channel_type oper_channel_type;
686 struct ieee80211_channel *oper_channel, *csa_channel;
689 /* dot11CountersTable */
690 u32 dot11TransmittedFragmentCount;
691 u32 dot11MulticastTransmittedFrameCount;
692 u32 dot11FailedCount;
694 u32 dot11MultipleRetryCount;
695 u32 dot11FrameDuplicateCount;
696 u32 dot11ReceivedFragmentCount;
697 u32 dot11MulticastReceivedFrameCount;
698 u32 dot11TransmittedFrameCount;
700 #ifdef CONFIG_MAC80211_LEDS
701 int tx_led_counter, rx_led_counter;
702 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
703 char tx_led_name[32], rx_led_name[32],
704 assoc_led_name[32], radio_led_name[32];
707 #ifdef CONFIG_MAC80211_DEBUGFS
708 struct work_struct sta_debugfs_add;
711 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
712 /* TX/RX handler statistics */
713 unsigned int tx_handlers_drop;
714 unsigned int tx_handlers_queued;
715 unsigned int tx_handlers_drop_unencrypted;
716 unsigned int tx_handlers_drop_fragment;
717 unsigned int tx_handlers_drop_wep;
718 unsigned int tx_handlers_drop_not_assoc;
719 unsigned int tx_handlers_drop_unauth_port;
720 unsigned int rx_handlers_drop;
721 unsigned int rx_handlers_queued;
722 unsigned int rx_handlers_drop_nullfunc;
723 unsigned int rx_handlers_drop_defrag;
724 unsigned int rx_handlers_drop_short;
725 unsigned int rx_handlers_drop_passive_scan;
726 unsigned int tx_expand_skb_head;
727 unsigned int tx_expand_skb_head_cloned;
728 unsigned int rx_expand_skb_head;
729 unsigned int rx_expand_skb_head2;
730 unsigned int rx_handlers_fragments;
731 unsigned int tx_status_drop;
732 #define I802_DEBUG_INC(c) (c)++
733 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
734 #define I802_DEBUG_INC(c) do { } while (0)
735 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
738 int total_ps_buffered; /* total number of all buffered unicast and
739 * multicast packets for power saving stations
741 int wifi_wme_noack_test;
742 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
746 * PS can only be enabled when we have exactly one managed
747 * interface (and monitors) in PS, this then points there.
749 struct ieee80211_sub_if_data *ps_sdata;
750 struct work_struct dynamic_ps_enable_work;
751 struct work_struct dynamic_ps_disable_work;
752 struct timer_list dynamic_ps_timer;
754 int user_power_level; /* in dBm */
755 int power_constr_level; /* in dBm */
757 struct work_struct restart_work;
759 #ifdef CONFIG_MAC80211_DEBUGFS
760 struct local_debugfsdentries {
761 struct dentry *rcdir;
762 struct dentry *rcname;
763 struct dentry *frequency;
764 struct dentry *rts_threshold;
765 struct dentry *fragmentation_threshold;
766 struct dentry *short_retry_limit;
767 struct dentry *long_retry_limit;
768 struct dentry *total_ps_buffered;
769 struct dentry *wep_iv;
771 struct dentry *reset;
772 struct dentry *statistics;
773 struct local_debugfsdentries_statsdentries {
774 struct dentry *transmitted_fragment_count;
775 struct dentry *multicast_transmitted_frame_count;
776 struct dentry *failed_count;
777 struct dentry *retry_count;
778 struct dentry *multiple_retry_count;
779 struct dentry *frame_duplicate_count;
780 struct dentry *received_fragment_count;
781 struct dentry *multicast_received_frame_count;
782 struct dentry *transmitted_frame_count;
783 struct dentry *wep_undecryptable_count;
784 struct dentry *num_scans;
785 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
786 struct dentry *tx_handlers_drop;
787 struct dentry *tx_handlers_queued;
788 struct dentry *tx_handlers_drop_unencrypted;
789 struct dentry *tx_handlers_drop_fragment;
790 struct dentry *tx_handlers_drop_wep;
791 struct dentry *tx_handlers_drop_not_assoc;
792 struct dentry *tx_handlers_drop_unauth_port;
793 struct dentry *rx_handlers_drop;
794 struct dentry *rx_handlers_queued;
795 struct dentry *rx_handlers_drop_nullfunc;
796 struct dentry *rx_handlers_drop_defrag;
797 struct dentry *rx_handlers_drop_short;
798 struct dentry *rx_handlers_drop_passive_scan;
799 struct dentry *tx_expand_skb_head;
800 struct dentry *tx_expand_skb_head_cloned;
801 struct dentry *rx_expand_skb_head;
802 struct dentry *rx_expand_skb_head2;
803 struct dentry *rx_handlers_fragments;
804 struct dentry *tx_status_drop;
806 struct dentry *dot11ACKFailureCount;
807 struct dentry *dot11RTSFailureCount;
808 struct dentry *dot11FCSErrorCount;
809 struct dentry *dot11RTSSuccessCount;
811 struct dentry *stations;
817 static inline struct ieee80211_sub_if_data *
818 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
820 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
822 BUG_ON(!local || local->mdev == dev);
824 return netdev_priv(dev);
827 /* this struct represents 802.11n's RA/TID combination */
828 struct ieee80211_ra_tid {
833 /* Parsed Information Elements */
834 struct ieee802_11_elems {
838 /* pointers to IEs */
853 struct ieee80211_ht_cap *ht_cap_elem;
854 struct ieee80211_ht_info *ht_info_elem;
864 u8 *quiet_elem; /* first quite element */
867 /* length of them, respectively */
879 u8 ext_supp_rates_len;
888 u8 ch_switch_elem_len;
890 u8 pwr_constr_elem_len;
892 u8 num_of_quiet_elem; /* can be more the one */
896 static inline struct ieee80211_local *hw_to_local(
897 struct ieee80211_hw *hw)
899 return container_of(hw, struct ieee80211_local, hw);
902 static inline struct ieee80211_hw *local_to_hw(
903 struct ieee80211_local *local)
909 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
911 return compare_ether_addr(raddr, addr) == 0 ||
912 is_broadcast_ether_addr(raddr);
916 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
917 int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
918 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
919 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
921 void ieee80211_configure_filter(struct ieee80211_local *local);
922 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
924 /* wireless extensions */
925 extern const struct iw_handler_def ieee80211_iw_handler_def;
928 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
929 ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
931 struct ieee80211_rx_status *rx_status);
932 int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
933 int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
934 int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
935 int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
936 void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
937 int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
938 int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
939 void ieee80211_send_pspoll(struct ieee80211_local *local,
940 struct ieee80211_sub_if_data *sdata);
941 void ieee80211_recalc_ps(struct ieee80211_local *local);
944 int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
945 int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
946 int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
947 int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
948 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
949 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
951 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
952 struct ieee80211_rx_status *rx_status);
953 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
954 u8 *bssid, u8 *addr, u32 supp_rates);
956 /* scan/BSS handling */
957 void ieee80211_scan_work(struct work_struct *work);
958 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
959 struct cfg80211_scan_request *req);
960 int ieee80211_scan_results(struct ieee80211_local *local,
961 struct iw_request_info *info,
962 char *buf, size_t len);
964 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
966 struct ieee80211_rx_status *rx_status);
967 int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
968 const char *ie, size_t len);
970 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
971 void ieee80211_scan_failed(struct ieee80211_local *local);
972 int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
973 struct cfg80211_scan_request *req);
974 struct ieee80211_bss *
975 ieee80211_bss_info_update(struct ieee80211_local *local,
976 struct ieee80211_rx_status *rx_status,
977 struct ieee80211_mgmt *mgmt,
979 struct ieee802_11_elems *elems,
980 struct ieee80211_channel *channel,
982 struct ieee80211_bss *
983 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
984 u8 *ssid, u8 ssid_len);
985 void ieee80211_rx_bss_put(struct ieee80211_local *local,
986 struct ieee80211_bss *bss);
987 void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
988 int freq, u8 *ssid, u8 ssid_len);
990 /* interface handling */
991 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
992 struct net_device **new_dev, enum nl80211_iftype type,
993 struct vif_params *params);
994 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
995 enum nl80211_iftype type);
996 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
997 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1000 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1001 void ieee80211_tx_pending(unsigned long data);
1002 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
1003 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
1004 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
1007 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
1008 struct ieee80211_ht_cap *ht_cap_ie,
1009 struct ieee80211_sta_ht_cap *ht_cap);
1010 void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
1011 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1012 const u8 *da, u16 tid,
1013 u16 initiator, u16 reason_code);
1015 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
1016 u16 tid, u16 initiator, u16 reason);
1017 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1018 u16 initiator, u16 reason);
1019 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1020 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1021 struct sta_info *sta,
1022 struct ieee80211_mgmt *mgmt, size_t len);
1023 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1024 struct sta_info *sta,
1025 struct ieee80211_mgmt *mgmt,
1027 void ieee80211_process_addba_request(struct ieee80211_local *local,
1028 struct sta_info *sta,
1029 struct ieee80211_mgmt *mgmt,
1032 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1033 enum ieee80211_back_parties initiator);
1035 /* Spectrum management */
1036 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1037 struct ieee80211_mgmt *mgmt,
1039 void ieee80211_chswitch_timer(unsigned long data);
1040 void ieee80211_chswitch_work(struct work_struct *work);
1041 void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1042 struct ieee80211_channel_sw_ie *sw_elem,
1043 struct ieee80211_bss *bss);
1044 void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1045 u16 capab_info, u8 *pwr_constr_elem,
1046 u8 pwr_constr_elem_len);
1048 /* Suspend/resume and hw reconfiguration */
1049 int ieee80211_reconfig(struct ieee80211_local *local);
1052 int __ieee80211_suspend(struct ieee80211_hw *hw);
1054 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1056 return ieee80211_reconfig(hw_to_local(hw));
1059 static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
1064 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1070 /* utility functions/constants */
1071 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1072 extern const unsigned char rfc1042_header[6];
1073 extern const unsigned char bridge_tunnel_header[6];
1074 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1075 enum nl80211_iftype type);
1076 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1077 int rate, int erp, int short_preamble);
1078 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1079 struct ieee80211_hdr *hdr, const u8 *tsc);
1080 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1081 void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1083 void ieee802_11_parse_elems(u8 *start, size_t len,
1084 struct ieee802_11_elems *elems);
1085 int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
1086 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1087 enum ieee80211_band band);
1089 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1090 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1091 void ieee80211_dynamic_ps_timer(unsigned long data);
1092 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1093 struct ieee80211_sub_if_data *sdata,
1095 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1096 struct ieee80211_hdr *hdr);
1097 void ieee80211_beacon_loss_work(struct work_struct *work);
1099 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1100 enum queue_stop_reason reason);
1101 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1102 enum queue_stop_reason reason);
1103 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1104 enum queue_stop_reason reason);
1105 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1106 enum queue_stop_reason reason);
1108 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1109 u16 transaction, u16 auth_alg,
1110 u8 *extra, size_t extra_len,
1111 const u8 *bssid, int encrypt);
1112 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1113 const u8 *ie, size_t ie_len);
1114 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1115 const u8 *ssid, size_t ssid_len,
1116 const u8 *ie, size_t ie_len);
1118 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1119 const size_t supp_rates_len,
1120 const u8 *supp_rates);
1121 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1122 struct ieee802_11_elems *elems,
1123 enum ieee80211_band band);
1125 #ifdef CONFIG_MAC80211_NOINLINE
1126 #define debug_noinline noinline
1128 #define debug_noinline
1131 #endif /* IEEE80211_I_H */