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/wireless.h>
30 /* ieee80211.o internal definitions, etc. These are not included into
31 * low-level drivers. */
34 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
35 #endif /* ETH_P_PAE */
37 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
39 #define IEEE80211_FC(type, subtype) cpu_to_le16(type | subtype)
41 struct ieee80211_local;
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 12
56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
57 * reception of at least three fragmented frames. This limit can be increased
58 * by changing this define, at the cost of slower frame reassembly and
59 * increased memory use (about 2 kB of RAM per entry). */
60 #define IEEE80211_FRAGMENT_MAX 4
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_sta_bss {
75 struct list_head list;
76 struct ieee80211_sta_bss *hnext;
82 u8 ssid[IEEE80211_MAX_SSID_LEN];
83 u16 capability; /* host byte order */
84 enum ieee80211_band band;
86 int signal, noise, qual;
95 #ifdef CONFIG_MAC80211_MESH
100 #define IEEE80211_MAX_SUPP_RATES 32
101 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
102 size_t supp_rates_len;
107 unsigned long last_update;
109 /* during assocation, we save an ERP value from a probe response so
110 * that we can feed ERP info to the driver when handling the
111 * association completes. these fields probably won't be up-to-date
112 * otherwise, you probably don't want to use them. */
117 static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
119 #ifdef CONFIG_MAC80211_MESH
120 return bss->mesh_cfg;
125 static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss)
127 #ifdef CONFIG_MAC80211_MESH
133 static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss)
135 #ifdef CONFIG_MAC80211_MESH
136 return bss->mesh_id_len;
142 typedef unsigned __bitwise__ ieee80211_tx_result;
143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
144 #define TX_DROP ((__force ieee80211_tx_result) 1u)
145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
147 #define IEEE80211_TX_FRAGMENTED BIT(0)
148 #define IEEE80211_TX_UNICAST BIT(1)
149 #define IEEE80211_TX_PS_BUFFERED BIT(2)
150 #define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
152 struct ieee80211_tx_data {
154 struct net_device *dev;
155 struct ieee80211_local *local;
156 struct ieee80211_sub_if_data *sdata;
157 struct sta_info *sta;
158 struct ieee80211_key *key;
160 struct ieee80211_channel *channel;
162 /* use this rate (if set) for last fragment; rate can
163 * be set to lower rate for the first fragments, e.g.,
164 * when using CTS protection with IEEE 802.11g. */
165 s8 last_frag_rate_idx;
167 /* Extra fragments (in addition to the first fragment
169 struct sk_buff **extra_frag;
177 typedef unsigned __bitwise__ ieee80211_rx_result;
178 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
179 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
180 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
181 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
183 #define IEEE80211_RX_IN_SCAN BIT(0)
184 /* frame is destined to interface currently processed (incl. multicast frames) */
185 #define IEEE80211_RX_RA_MATCH BIT(1)
186 #define IEEE80211_RX_AMSDU BIT(2)
187 #define IEEE80211_RX_CMNTR_REPORTED BIT(3)
188 #define IEEE80211_RX_FRAGMENTED BIT(4)
190 struct ieee80211_rx_data {
192 struct net_device *dev;
193 struct ieee80211_local *local;
194 struct ieee80211_sub_if_data *sdata;
195 struct sta_info *sta;
196 struct ieee80211_key *key;
197 struct ieee80211_rx_status *status;
198 struct ieee80211_rate *rate;
202 int sent_ps_buffered;
209 struct ieee80211_tx_stored_packet {
211 struct sk_buff **extra_frag;
212 s8 last_frag_rate_idx;
214 bool last_frag_rate_ctrl_probe;
219 int head_len, tail_len;
223 struct ieee80211_if_ap {
224 struct beacon_data *beacon;
226 struct list_head vlans;
228 u8 ssid[IEEE80211_MAX_SSID_LEN];
231 /* yes, this looks ugly, but guarantees that we can later use
233 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
234 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
235 struct sk_buff_head ps_bc_buf;
236 atomic_t num_sta_ps; /* number of stations in PS mode */
238 int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
239 int max_ratectrl_rateidx; /* max TX rateidx for rate control */
240 int num_beacons; /* number of TXed beacon frames for this BSS */
243 struct ieee80211_if_wds {
244 struct sta_info *sta;
245 u8 remote_addr[ETH_ALEN];
248 struct ieee80211_if_vlan {
249 struct ieee80211_sub_if_data *ap;
250 struct list_head list;
254 __u32 fwded_frames; /* Mesh forwarded frames */
255 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
256 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
257 atomic_t estab_plinks;
260 #define PREQ_Q_F_START 0x1
261 #define PREQ_Q_F_REFRESH 0x2
262 struct mesh_preq_queue {
263 struct list_head list;
270 /* Mesh plink management parameters */
271 u16 dot11MeshRetryTimeout;
272 u16 dot11MeshConfirmTimeout;
273 u16 dot11MeshHoldingTimeout;
274 u16 dot11MeshMaxPeerLinks;
275 u8 dot11MeshMaxRetries;
277 bool auto_open_plinks;
278 /* HWMP parameters */
279 u8 dot11MeshHWMPmaxPREQretries;
280 u32 path_refresh_time;
281 u16 min_discovery_timeout;
282 u32 dot11MeshHWMPactivePathTimeout;
283 u16 dot11MeshHWMPpreqMinInterval;
284 u16 dot11MeshHWMPnetDiameterTraversalTime;
288 /* flags used in struct ieee80211_if_sta.flags */
289 #define IEEE80211_STA_SSID_SET BIT(0)
290 #define IEEE80211_STA_BSSID_SET BIT(1)
291 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
292 #define IEEE80211_STA_AUTHENTICATED BIT(3)
293 #define IEEE80211_STA_ASSOCIATED BIT(4)
294 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
295 #define IEEE80211_STA_CREATE_IBSS BIT(6)
296 #define IEEE80211_STA_MIXED_CELL BIT(7)
297 #define IEEE80211_STA_WMM_ENABLED BIT(8)
298 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
299 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
300 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
301 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
302 struct ieee80211_if_sta {
303 struct timer_list timer;
304 struct work_struct work;
305 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
306 u8 ssid[IEEE80211_MAX_SSID_LEN];
308 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
309 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
310 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED,
314 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
315 size_t scan_ssid_len;
316 #ifdef CONFIG_MAC80211_MESH
317 struct timer_list mesh_path_timer;
318 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
320 /* Active Path Selection Protocol Identifier */
322 /* Active Path Selection Metric Identifier */
324 /* Congestion Control Mode Identifier */
326 /* Local mesh Destination Sequence Number */
328 /* Last used PREQ ID */
331 /* Timestamp of last DSN update */
332 unsigned long last_dsn_update;
333 /* Timestamp of last DSN sent */
334 unsigned long last_preq;
335 struct mesh_rmc *rmc;
336 spinlock_t mesh_preq_queue_lock;
337 struct mesh_preq_queue preq_queue;
339 struct mesh_stats mshstats;
340 struct mesh_config mshcfg;
342 bool accepting_plinks;
346 u8 *extra_ie; /* to be added to the end of AssocReq */
349 /* The last AssocReq/Resp IEs */
350 u8 *assocreq_ies, *assocresp_ies;
351 size_t assocreq_ies_len, assocresp_ies_len;
353 struct sk_buff_head skb_queue;
355 int auth_tries, assoc_tries;
357 unsigned long request;
359 unsigned long last_probe;
362 #define IEEE80211_STA_REQ_SCAN 0
363 #define IEEE80211_STA_REQ_AUTH 1
364 #define IEEE80211_STA_REQ_RUN 2
366 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
367 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
368 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
369 unsigned int auth_algs; /* bitfield of allowed auth algs */
370 int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
371 int auth_transaction;
373 unsigned long ibss_join_req;
374 struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
375 u32 supp_rates_bits[IEEE80211_NUM_BANDS];
377 int wmm_last_param_set;
378 int num_beacons; /* number of TXed beacon frames by this STA */
381 static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
382 u8 mesh_id_len, u8 *mesh_id)
384 #ifdef CONFIG_MAC80211_MESH
385 ifsta->mesh_id_len = mesh_id_len;
386 memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
390 #ifdef CONFIG_MAC80211_MESH
391 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
392 do { (sta)->mshstats.name++; } while (0)
394 #define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
398 /* flags used in struct ieee80211_sub_if_data.flags */
399 #define IEEE80211_SDATA_ALLMULTI BIT(0)
400 #define IEEE80211_SDATA_PROMISC BIT(1)
401 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
402 #define IEEE80211_SDATA_OPERATING_GMODE BIT(3)
403 struct ieee80211_sub_if_data {
404 struct list_head list;
406 struct wireless_dev wdev;
409 struct list_head key_list;
411 struct net_device *dev;
412 struct ieee80211_local *local;
416 int drop_unencrypted;
419 * basic rates of this AP or the AP we're associated to
425 /* Fragment table for host-based reassembly */
426 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
427 unsigned int fragment_next;
429 #define NUM_DEFAULT_KEYS 4
430 struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
431 struct ieee80211_key *default_key;
434 * BSS configuration for this interface.
436 * FIXME: I feel bad putting this here when we already have a
437 * bss pointer, but the bss pointer is just wrong when
438 * you have multiple virtual STA mode interfaces...
439 * This needs to be fixed.
441 struct ieee80211_bss_conf bss_conf;
442 struct ieee80211_if_ap *bss; /* BSS that this device belongs to */
445 struct ieee80211_if_ap ap;
446 struct ieee80211_if_wds wds;
447 struct ieee80211_if_vlan vlan;
448 struct ieee80211_if_sta sta;
454 #ifdef CONFIG_MAC80211_DEBUGFS
455 struct dentry *debugfsdir;
458 struct dentry *channel_use;
459 struct dentry *drop_unencrypted;
460 struct dentry *state;
461 struct dentry *bssid;
462 struct dentry *prev_bssid;
463 struct dentry *ssid_len;
465 struct dentry *ap_capab;
466 struct dentry *capab;
467 struct dentry *extra_ie_len;
468 struct dentry *auth_tries;
469 struct dentry *assoc_tries;
470 struct dentry *auth_algs;
471 struct dentry *auth_alg;
472 struct dentry *auth_transaction;
473 struct dentry *flags;
474 struct dentry *num_beacons_sta;
477 struct dentry *channel_use;
478 struct dentry *drop_unencrypted;
479 struct dentry *num_sta_ps;
480 struct dentry *dtim_count;
481 struct dentry *num_beacons;
482 struct dentry *force_unicast_rateidx;
483 struct dentry *max_ratectrl_rateidx;
484 struct dentry *num_buffered_multicast;
487 struct dentry *channel_use;
488 struct dentry *drop_unencrypted;
492 struct dentry *channel_use;
493 struct dentry *drop_unencrypted;
498 struct dentry *default_key;
501 #ifdef CONFIG_MAC80211_MESH
502 struct dentry *mesh_stats_dir;
504 struct dentry *fwded_frames;
505 struct dentry *dropped_frames_ttl;
506 struct dentry *dropped_frames_no_route;
507 struct dentry *estab_plinks;
508 struct timer_list mesh_path_timer;
511 struct dentry *mesh_config_dir;
513 struct dentry *dot11MeshRetryTimeout;
514 struct dentry *dot11MeshConfirmTimeout;
515 struct dentry *dot11MeshHoldingTimeout;
516 struct dentry *dot11MeshMaxRetries;
517 struct dentry *dot11MeshTTL;
518 struct dentry *auto_open_plinks;
519 struct dentry *dot11MeshMaxPeerLinks;
520 struct dentry *dot11MeshHWMPactivePathTimeout;
521 struct dentry *dot11MeshHWMPpreqMinInterval;
522 struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
523 struct dentry *dot11MeshHWMPmaxPREQretries;
524 struct dentry *path_refresh_time;
525 struct dentry *min_discovery_timeout;
530 /* must be last, dynamically sized area in this! */
531 struct ieee80211_vif vif;
535 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
537 return container_of(p, struct ieee80211_sub_if_data, vif);
540 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
543 IEEE80211_RX_MSG = 1,
544 IEEE80211_TX_STATUS_MSG = 2,
545 IEEE80211_DELBA_MSG = 3,
546 IEEE80211_ADDBA_MSG = 4,
549 struct ieee80211_local {
550 /* embed the driver visible part.
551 * don't cast (use the static inlines below), but we keep
552 * it first anyway so they become a no-op */
553 struct ieee80211_hw hw;
555 const struct ieee80211_ops *ops;
557 struct net_device *mdev; /* wmaster# - "master" 802.11 device */
559 int monitors, cooked_mntrs;
560 /* number of interfaces with corresponding FIF_ flags */
561 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
562 unsigned int filter_flags; /* FIF_* */
563 struct iw_statistics wstats;
565 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
566 int tx_headroom; /* required headroom for hardware/radiotap */
569 IEEE80211_DEV_UNINITIALIZED = 0,
570 IEEE80211_DEV_REGISTERED,
571 IEEE80211_DEV_UNREGISTERED,
574 /* Tasklet and skb queue to process calls from IRQ mode. All frames
575 * added to skb_queue will be processed, but frames in
576 * skb_queue_unreliable may be dropped if the total length of these
577 * queues increases over the limit. */
578 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
579 struct tasklet_struct tasklet;
580 struct sk_buff_head skb_queue;
581 struct sk_buff_head skb_queue_unreliable;
585 * The lock only protects the list, hash, timer and counter
586 * against manipulation, reads are done in RCU. Additionally,
587 * the lock protects each BSS's TIM bitmap.
590 unsigned long num_sta;
591 struct list_head sta_list;
592 struct list_head sta_flush_list;
593 struct work_struct sta_flush_work;
594 struct sta_info *sta_hash[STA_HASH_SIZE];
595 struct timer_list sta_cleanup;
597 unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
598 struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
599 struct tasklet_struct tx_pending_tasklet;
601 /* number of interfaces with corresponding IFF_ flags */
602 atomic_t iff_allmultis, iff_promiscs;
604 struct rate_control_ref *rate_ctrl;
607 int fragmentation_threshold;
608 int short_retry_limit; /* dot11ShortRetryLimit */
609 int long_retry_limit; /* dot11LongRetryLimit */
611 struct crypto_blkcipher *wep_tx_tfm;
612 struct crypto_blkcipher *wep_rx_tfm;
615 int bridge_packets; /* bridge packets between associated stations and
616 * deliver multicast frames both back to wireless
617 * media and to the local net stack */
619 struct list_head interfaces;
622 * Key lock, protects sdata's key_list and sta_info's
623 * key pointers (write access, they're RCU.)
628 bool sta_sw_scanning;
629 bool sta_hw_scanning;
630 int scan_channel_idx;
631 enum ieee80211_band scan_band;
633 enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
634 unsigned long last_scan_completed;
635 struct delayed_work scan_work;
636 struct net_device *scan_dev;
637 struct ieee80211_channel *oper_channel, *scan_channel;
638 u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
639 size_t scan_ssid_len;
640 struct list_head sta_bss_list;
641 struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
642 spinlock_t sta_bss_lock;
645 /* dot11CountersTable */
646 u32 dot11TransmittedFragmentCount;
647 u32 dot11MulticastTransmittedFrameCount;
648 u32 dot11FailedCount;
650 u32 dot11MultipleRetryCount;
651 u32 dot11FrameDuplicateCount;
652 u32 dot11ReceivedFragmentCount;
653 u32 dot11MulticastReceivedFrameCount;
654 u32 dot11TransmittedFrameCount;
655 u32 dot11WEPUndecryptableCount;
657 #ifdef CONFIG_MAC80211_LEDS
658 int tx_led_counter, rx_led_counter;
659 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
660 char tx_led_name[32], rx_led_name[32],
661 assoc_led_name[32], radio_led_name[32];
667 #ifdef CONFIG_MAC80211_DEBUGFS
668 struct work_struct sta_debugfs_add;
671 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
672 /* TX/RX handler statistics */
673 unsigned int tx_handlers_drop;
674 unsigned int tx_handlers_queued;
675 unsigned int tx_handlers_drop_unencrypted;
676 unsigned int tx_handlers_drop_fragment;
677 unsigned int tx_handlers_drop_wep;
678 unsigned int tx_handlers_drop_not_assoc;
679 unsigned int tx_handlers_drop_unauth_port;
680 unsigned int rx_handlers_drop;
681 unsigned int rx_handlers_queued;
682 unsigned int rx_handlers_drop_nullfunc;
683 unsigned int rx_handlers_drop_defrag;
684 unsigned int rx_handlers_drop_short;
685 unsigned int rx_handlers_drop_passive_scan;
686 unsigned int tx_expand_skb_head;
687 unsigned int tx_expand_skb_head_cloned;
688 unsigned int rx_expand_skb_head;
689 unsigned int rx_expand_skb_head2;
690 unsigned int rx_handlers_fragments;
691 unsigned int tx_status_drop;
692 #define I802_DEBUG_INC(c) (c)++
693 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
694 #define I802_DEBUG_INC(c) do { } while (0)
695 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
698 int total_ps_buffered; /* total number of all buffered unicast and
699 * multicast packets for power saving stations
701 int wifi_wme_noack_test;
702 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
704 #ifdef CONFIG_MAC80211_DEBUGFS
705 struct local_debugfsdentries {
706 struct dentry *frequency;
707 struct dentry *antenna_sel_tx;
708 struct dentry *antenna_sel_rx;
709 struct dentry *bridge_packets;
710 struct dentry *rts_threshold;
711 struct dentry *fragmentation_threshold;
712 struct dentry *short_retry_limit;
713 struct dentry *long_retry_limit;
714 struct dentry *total_ps_buffered;
715 struct dentry *wep_iv;
716 struct dentry *statistics;
717 struct local_debugfsdentries_statsdentries {
718 struct dentry *transmitted_fragment_count;
719 struct dentry *multicast_transmitted_frame_count;
720 struct dentry *failed_count;
721 struct dentry *retry_count;
722 struct dentry *multiple_retry_count;
723 struct dentry *frame_duplicate_count;
724 struct dentry *received_fragment_count;
725 struct dentry *multicast_received_frame_count;
726 struct dentry *transmitted_frame_count;
727 struct dentry *wep_undecryptable_count;
728 struct dentry *num_scans;
729 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
730 struct dentry *tx_handlers_drop;
731 struct dentry *tx_handlers_queued;
732 struct dentry *tx_handlers_drop_unencrypted;
733 struct dentry *tx_handlers_drop_fragment;
734 struct dentry *tx_handlers_drop_wep;
735 struct dentry *tx_handlers_drop_not_assoc;
736 struct dentry *tx_handlers_drop_unauth_port;
737 struct dentry *rx_handlers_drop;
738 struct dentry *rx_handlers_queued;
739 struct dentry *rx_handlers_drop_nullfunc;
740 struct dentry *rx_handlers_drop_defrag;
741 struct dentry *rx_handlers_drop_short;
742 struct dentry *rx_handlers_drop_passive_scan;
743 struct dentry *tx_expand_skb_head;
744 struct dentry *tx_expand_skb_head_cloned;
745 struct dentry *rx_expand_skb_head;
746 struct dentry *rx_expand_skb_head2;
747 struct dentry *rx_handlers_fragments;
748 struct dentry *tx_status_drop;
750 struct dentry *dot11ACKFailureCount;
751 struct dentry *dot11RTSFailureCount;
752 struct dentry *dot11FCSErrorCount;
753 struct dentry *dot11RTSSuccessCount;
755 struct dentry *stations;
761 static inline int ieee80211_is_multiqueue(struct ieee80211_local *local)
763 #ifdef CONFIG_MAC80211_QOS
764 return netif_is_multiqueue(local->mdev);
770 /* this struct represents 802.11n's RA/TID combination */
771 struct ieee80211_ra_tid {
776 /* Parsed Information Elements */
777 struct ieee802_11_elems {
778 /* pointers to IEs */
802 /* length of them, respectively */
814 u8 ext_supp_rates_len;
827 static inline struct ieee80211_local *hw_to_local(
828 struct ieee80211_hw *hw)
830 return container_of(hw, struct ieee80211_local, hw);
833 static inline struct ieee80211_hw *local_to_hw(
834 struct ieee80211_local *local)
839 struct sta_attribute {
840 struct attribute attr;
841 ssize_t (*show)(const struct sta_info *, char *buf);
842 ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
845 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
847 return compare_ether_addr(raddr, addr) == 0 ||
848 is_broadcast_ether_addr(raddr);
853 int ieee80211_hw_config(struct ieee80211_local *local);
854 int ieee80211_if_config(struct net_device *dev);
855 int ieee80211_if_config_beacon(struct net_device *dev);
856 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
857 void ieee80211_if_setup(struct net_device *dev);
858 u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
859 struct ieee80211_ht_info *req_ht_cap,
860 struct ieee80211_ht_bss_info *req_bss_cap);
862 /* ieee80211_ioctl.c */
863 extern const struct iw_handler_def ieee80211_iw_handler_def;
866 /* Least common multiple of the used rates (in 100 kbps). This is used to
867 * calculate rate_inv values for each rate so that only integers are needed. */
868 #define CHAN_UTIL_RATE_LCM 95040
869 /* 1 usec is 1/8 * (95040/10) = 1188 */
870 #define CHAN_UTIL_PER_USEC 1188
871 /* Amount of bits to shift the result right to scale the total utilization
872 * to values that will not wrap around 32-bit integers. */
873 #define CHAN_UTIL_SHIFT 9
874 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
875 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
876 * raw value with about 23 should give utilization in 10th of a percentage
877 * (1/1000). However, utilization is only estimated and not all intervals
878 * between frames etc. are calculated. 18 seems to give numbers that are closer
879 * to the real maximum. */
880 #define CHAN_UTIL_PER_10MS 18
881 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
882 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
885 /* ieee80211_ioctl.c */
886 int ieee80211_set_freq(struct ieee80211_local *local, int freq);
887 /* ieee80211_sta.c */
888 void ieee80211_sta_timer(unsigned long data);
889 void ieee80211_sta_work(struct work_struct *work);
890 void ieee80211_sta_scan_work(struct work_struct *work);
891 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
892 struct ieee80211_rx_status *rx_status);
893 int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
894 int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
895 int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
896 int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
897 void ieee80211_sta_req_auth(struct net_device *dev,
898 struct ieee80211_if_sta *ifsta);
899 int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
900 ieee80211_rx_result ieee80211_sta_rx_scan(
901 struct net_device *dev, struct sk_buff *skb,
902 struct ieee80211_rx_status *rx_status);
903 void ieee80211_rx_bss_list_init(struct net_device *dev);
904 void ieee80211_rx_bss_list_deinit(struct net_device *dev);
905 int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
906 struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev,
907 struct sk_buff *skb, u8 *bssid,
909 int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
910 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
911 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
913 void ieee80211_reset_erp_info(struct net_device *dev);
914 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
915 struct ieee80211_ht_info *ht_info);
916 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
917 struct ieee80211_ht_addt_info *ht_add_info_ie,
918 struct ieee80211_ht_bss_info *bss_info);
919 void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
920 u16 tid, u8 dialog_token, u16 start_seq_num,
921 u16 agg_size, u16 timeout);
922 void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
923 u16 initiator, u16 reason_code);
925 void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
926 u16 tid, u16 initiator, u16 reason);
927 void sta_addba_resp_timer_expired(unsigned long data);
928 void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr);
929 u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
930 struct ieee802_11_elems *elems,
931 enum ieee80211_band band);
932 void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
934 void ieee802_11_parse_elems(u8 *start, size_t len,
935 struct ieee802_11_elems *elems);
937 #ifdef CONFIG_MAC80211_MESH
938 void ieee80211_start_mesh(struct net_device *dev);
940 static inline void ieee80211_start_mesh(struct net_device *dev)
944 /* ieee80211_iface.c */
945 int ieee80211_if_add(struct net_device *dev, const char *name,
946 struct net_device **new_dev, int type,
947 struct vif_params *params);
948 void ieee80211_if_set_type(struct net_device *dev, int type);
949 void ieee80211_if_reinit(struct net_device *dev);
950 void __ieee80211_if_del(struct ieee80211_local *local,
951 struct ieee80211_sub_if_data *sdata);
952 int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
953 void ieee80211_if_free(struct net_device *dev);
954 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
957 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
958 void ieee80211_tx_pending(unsigned long data);
959 int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
960 int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
961 int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
963 /* utility functions/constants */
964 extern void *mac80211_wiphy_privid; /* for wiphy privid */
965 extern const unsigned char rfc1042_header[6];
966 extern const unsigned char bridge_tunnel_header[6];
967 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
968 enum ieee80211_if_types type);
969 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
970 int rate, int erp, int short_preamble);
971 void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
972 struct ieee80211_hdr *hdr);
974 #endif /* IEEE80211_I_H */