2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2010 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 <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
35 struct ieee80211_local;
37 /* Maximum number of broadcast/multicast frames to buffer when some of the
38 * associated stations are using power saving. */
39 #define AP_MAX_BC_BUFFER 128
41 /* Maximum number of frames buffered to all STAs, including multicast frames.
42 * Note: increasing this limit increases the potential memory requirement. Each
43 * frame can be up to about 2 kB long. */
44 #define TOTAL_MAX_TX_BUFFER 512
46 /* Required encryption head and tailroom */
47 #define IEEE80211_ENCRYPT_HEADROOM 8
48 #define IEEE80211_ENCRYPT_TAILROOM 18
50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51 * reception of at least three fragmented frames. This limit can be increased
52 * by changing this define, at the cost of slower frame reassembly and
53 * increased memory use (about 2 kB of RAM per entry). */
54 #define IEEE80211_FRAGMENT_MAX 4
56 #define TU_TO_JIFFIES(x) (usecs_to_jiffies((x) * 1024))
57 #define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x))
59 /* power level hasn't been configured (or set to automatic) */
60 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
63 * Some APs experience problems when working with U-APSD. Decrease the
64 * probability of that happening by using legacy mode for all ACs but VO.
65 * The AP that caused us trouble was a Cisco 4410N. It ignores our
66 * setting, and always treats non-VO ACs as legacy.
68 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
69 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
71 #define IEEE80211_DEFAULT_MAX_SP_LEN \
72 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
74 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
76 struct ieee80211_fragment_entry {
77 unsigned long first_frag_time;
79 unsigned int rx_queue;
80 unsigned int last_frag;
81 unsigned int extra_len;
82 struct sk_buff_head skb_list;
83 int ccmp; /* Whether fragments were encrypted with CCMP */
84 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
88 struct ieee80211_bss {
89 u32 device_ts_beacon, device_ts_presp;
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
97 struct ieee80211_rate *beacon_rate;
100 * During association, we save an ERP value from a probe response so
101 * that we can feed ERP info to the driver when handling the
102 * association completes. these fields probably won't be up-to-date
103 * otherwise, you probably don't want to use them.
108 /* Keep track of the corruption of the last beacon/probe response. */
111 /* Keep track of what bits of information we have valid info for. */
116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
120 * These are bss flags that are attached to a bss in the
121 * @corrupt_data field of &struct ieee80211_bss.
123 enum ieee80211_bss_corrupt_data_flags {
124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
129 * enum ieee80211_valid_data_flags - BSS valid data flags
130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
134 * These are bss flags that are attached to a bss in the
135 * @valid_data field of &struct ieee80211_bss. They show which parts
136 * of the data structure were recieved as a result of an un-corrupted
137 * beacon/probe response.
139 enum ieee80211_bss_valid_data_flags {
140 IEEE80211_BSS_VALID_WMM = BIT(1),
141 IEEE80211_BSS_VALID_RATES = BIT(2),
142 IEEE80211_BSS_VALID_ERP = BIT(3)
145 typedef unsigned __bitwise__ ieee80211_tx_result;
146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
147 #define TX_DROP ((__force ieee80211_tx_result) 1u)
148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
150 #define IEEE80211_TX_UNICAST BIT(1)
151 #define IEEE80211_TX_PS_BUFFERED BIT(2)
153 struct ieee80211_tx_data {
155 struct sk_buff_head skbs;
156 struct ieee80211_local *local;
157 struct ieee80211_sub_if_data *sdata;
158 struct sta_info *sta;
159 struct ieee80211_key *key;
160 struct ieee80211_tx_rate rate;
166 typedef unsigned __bitwise__ ieee80211_rx_result;
167 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
168 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
169 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
170 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
173 * enum ieee80211_packet_rx_flags - packet RX flags
174 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
175 * (incl. multicast frames)
176 * @IEEE80211_RX_FRAGMENTED: fragmented frame
177 * @IEEE80211_RX_AMSDU: a-MSDU packet
178 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
179 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
181 * These are per-frame flags that are attached to a frame in the
182 * @rx_flags field of &struct ieee80211_rx_status.
184 enum ieee80211_packet_rx_flags {
185 IEEE80211_RX_RA_MATCH = BIT(1),
186 IEEE80211_RX_FRAGMENTED = BIT(2),
187 IEEE80211_RX_AMSDU = BIT(3),
188 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
189 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
193 * enum ieee80211_rx_flags - RX data flags
195 * @IEEE80211_RX_CMNTR: received on cooked monitor already
196 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
197 * to cfg80211_report_obss_beacon().
199 * These flags are used across handling multiple interfaces
200 * for a single frame.
202 enum ieee80211_rx_flags {
203 IEEE80211_RX_CMNTR = BIT(0),
204 IEEE80211_RX_BEACON_REPORTED = BIT(1),
207 struct ieee80211_rx_data {
209 struct ieee80211_local *local;
210 struct ieee80211_sub_if_data *sdata;
211 struct sta_info *sta;
212 struct ieee80211_key *key;
217 * Index into sequence numbers array, 0..16
218 * since the last (16) is used for non-QoS,
219 * will be 16 on non-QoS frames.
224 * Index into the security IV/PN arrays, 0..16
225 * since the last (16) is used for CCMP-encrypted
226 * management frames, will be set to 16 on mgmt
227 * frames and 0 on non-QoS frames.
237 int head_len, tail_len;
238 struct rcu_head rcu_head;
242 struct rcu_head rcu_head;
248 /* yes, this looks ugly, but guarantees that we can later use
250 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
251 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
252 struct sk_buff_head bc_buf;
253 atomic_t num_sta_ps; /* number of stations in PS mode */
258 struct ieee80211_if_ap {
259 struct beacon_data __rcu *beacon;
260 struct probe_resp __rcu *probe_resp;
262 struct list_head vlans;
265 atomic_t num_mcast_sta; /* number of stations receiving multicast */
268 struct ieee80211_if_wds {
269 struct sta_info *sta;
270 u8 remote_addr[ETH_ALEN];
273 struct ieee80211_if_vlan {
274 struct list_head list;
276 /* used for all tx if the VLAN is configured to 4-addr mode */
277 struct sta_info __rcu *sta;
281 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
282 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
283 __u32 fwded_frames; /* Mesh total forwarded frames */
284 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
285 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
286 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
289 #define PREQ_Q_F_START 0x1
290 #define PREQ_Q_F_REFRESH 0x2
291 struct mesh_preq_queue {
292 struct list_head list;
298 #define IEEE80211_ROC_MIN_LEFT 1
300 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
303 struct ieee80211_roc_work {
304 struct list_head list;
305 struct list_head dependents;
307 struct delayed_work work;
309 struct ieee80211_sub_if_data *sdata;
311 struct ieee80211_channel *chan;
313 bool started, abort, hw_begun, notified;
316 unsigned long hw_start_time;
318 u32 duration, req_duration;
319 struct sk_buff *frame;
320 u64 cookie, mgmt_tx_cookie;
321 enum ieee80211_roc_type type;
324 /* flags used in struct ieee80211_if_managed.flags */
325 enum ieee80211_sta_flags {
326 IEEE80211_STA_BEACON_POLL = BIT(0),
327 IEEE80211_STA_CONNECTION_POLL = BIT(1),
328 IEEE80211_STA_CONTROL_PORT = BIT(2),
329 IEEE80211_STA_DISABLE_HT = BIT(4),
330 IEEE80211_STA_CSA_RECEIVED = BIT(5),
331 IEEE80211_STA_MFP_ENABLED = BIT(6),
332 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
333 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
334 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
335 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
336 IEEE80211_STA_DISABLE_VHT = BIT(11),
337 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
338 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
341 struct ieee80211_mgd_auth_data {
342 struct cfg80211_bss *bss;
343 unsigned long timeout;
345 u16 algorithm, expected_transaction;
347 u8 key[WLAN_KEY_LEN_WEP104];
350 bool timeout_started;
352 u16 sae_trans, sae_status;
357 struct ieee80211_mgd_assoc_data {
358 struct cfg80211_bss *bss;
359 const u8 *supp_rates;
361 unsigned long timeout;
365 u8 prev_bssid[ETH_ALEN];
366 u8 ssid[IEEE80211_MAX_SSID_LEN];
372 bool timeout_started;
376 struct ieee80211_vht_cap ap_vht_cap;
382 struct ieee80211_if_managed {
383 struct timer_list timer;
384 struct timer_list conn_mon_timer;
385 struct timer_list bcn_mon_timer;
386 struct timer_list chswitch_timer;
387 struct work_struct monitor_work;
388 struct work_struct chswitch_work;
389 struct work_struct beacon_connection_loss_work;
390 struct work_struct csa_connection_drop_work;
392 unsigned long beacon_timeout;
393 unsigned long probe_timeout;
394 int probe_send_count;
395 bool nullfunc_failed;
396 bool connection_loss;
398 struct cfg80211_bss *associated;
399 struct ieee80211_mgd_auth_data *auth_data;
400 struct ieee80211_mgd_assoc_data *assoc_data;
406 bool powersave; /* powersave requested for this iface */
407 bool broken_ap; /* AP is broken -- turn off powersave */
410 enum ieee80211_smps_mode req_smps, /* requested smps mode */
411 driver_smps_mode; /* smps mode request */
413 struct work_struct request_smps_work;
417 bool beacon_crc_valid;
421 bool status_received;
425 IEEE80211_MFP_DISABLED,
426 IEEE80211_MFP_OPTIONAL,
427 IEEE80211_MFP_REQUIRED
428 } mfp; /* management frame protection */
431 * Bitmask of enabled u-apsd queues,
432 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
435 unsigned int uapsd_queues;
438 * Maximum number of buffered frames AP can deliver during a
439 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
440 * Needs a new association to take effect.
442 unsigned int uapsd_max_sp_len;
444 int wmm_last_param_set;
450 /* Signal strength from the last Beacon frame in the current BSS. */
451 int last_beacon_signal;
454 * Weighted average of the signal strength from Beacon frames in the
455 * current BSS. This is in units of 1/16 of the signal unit to maintain
456 * accuracy and to speed up calculations, i.e., the value need to be
457 * divided by 16 to get the actual value.
459 int ave_beacon_signal;
462 * Number of Beacon frames used in ave_beacon_signal. This can be used
463 * to avoid generating less reliable cqm events that would be based
464 * only on couple of received frames.
466 unsigned int count_beacon_signal;
469 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
470 * that triggered a cqm event. 0 indicates that no event has been
471 * generated for the current association.
473 int last_cqm_event_signal;
476 * State variables for keeping track of RSSI of the AP currently
477 * connected to and informing driver when RSSI has gone
478 * below/above a certain threshold.
480 int rssi_min_thold, rssi_max_thold;
481 int last_ave_beacon_signal;
483 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
484 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
485 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
486 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
489 struct ieee80211_if_ibss {
490 struct timer_list timer;
492 unsigned long last_scan_completed;
502 u8 bssid[ETH_ALEN] __aligned(2);
503 u8 ssid[IEEE80211_MAX_SSID_LEN];
506 struct cfg80211_chan_def chandef;
508 unsigned long ibss_join_req;
509 /* probe response/beacon for IBSS */
510 struct beacon_data __rcu *presp;
512 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
513 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
515 spinlock_t incomplete_lock;
516 struct list_head incomplete_stations;
519 IEEE80211_IBSS_MLME_SEARCH,
520 IEEE80211_IBSS_MLME_JOINED,
525 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
527 * these declarations define the interface, which enables
528 * vendor-specific mesh synchronization
531 struct ieee802_11_elems;
532 struct ieee80211_mesh_sync_ops {
533 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
535 struct ieee80211_mgmt *mgmt,
536 struct ieee802_11_elems *elems,
537 struct ieee80211_rx_status *rx_status);
538 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
539 /* add other framework functions here */
542 struct ieee80211_if_mesh {
543 struct timer_list housekeeping_timer;
544 struct timer_list mesh_path_timer;
545 struct timer_list mesh_path_root_timer;
547 unsigned long wrkq_flags;
548 unsigned long mbss_changed;
550 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
552 /* Active Path Selection Protocol Identifier */
554 /* Active Path Selection Metric Identifier */
556 /* Congestion Control Mode Identifier */
558 /* Synchronization Protocol Identifier */
560 /* Authentication Protocol Identifier */
562 /* Local mesh Sequence Number */
564 /* Last used PREQ ID */
567 /* Timestamp of last SN update */
568 unsigned long last_sn_update;
569 /* Time when it's ok to send next PERR */
570 unsigned long next_perr;
571 /* Timestamp of last PREQ sent */
572 unsigned long last_preq;
573 struct mesh_rmc *rmc;
574 spinlock_t mesh_preq_queue_lock;
575 struct mesh_preq_queue preq_queue;
577 struct mesh_stats mshstats;
578 struct mesh_config mshcfg;
579 atomic_t estab_plinks;
581 bool accepting_plinks;
583 struct beacon_data __rcu *beacon;
587 IEEE80211_MESH_SEC_NONE = 0x0,
588 IEEE80211_MESH_SEC_AUTHED = 0x1,
589 IEEE80211_MESH_SEC_SECURED = 0x2,
592 /* Extensible Synchronization Framework */
593 const struct ieee80211_mesh_sync_ops *sync_ops;
594 s64 sync_offset_clockdrift_max;
595 spinlock_t sync_offset_lock;
597 /* mesh power save */
598 enum nl80211_mesh_power_mode nonpeer_pm;
599 int ps_peers_light_sleep;
600 int ps_peers_deep_sleep;
604 #ifdef CONFIG_MAC80211_MESH
605 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
606 do { (msh)->mshstats.name++; } while (0)
608 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
613 * enum ieee80211_sub_if_data_flags - virtual interface flags
615 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
616 * @IEEE80211_SDATA_PROMISC: interface is promisc
617 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
618 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
619 * associated stations and deliver multicast frames both
620 * back to wireless media and to the local net stack.
621 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
622 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
624 enum ieee80211_sub_if_data_flags {
625 IEEE80211_SDATA_ALLMULTI = BIT(0),
626 IEEE80211_SDATA_PROMISC = BIT(1),
627 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
628 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
629 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
630 IEEE80211_SDATA_IN_DRIVER = BIT(5),
634 * enum ieee80211_sdata_state_bits - virtual interface state bits
635 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
636 * mirrors netif_running() but is separate for interface type
637 * change handling while the interface is up
638 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
639 * mode, so queues are stopped
640 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
641 * to offchannel, reset when offchannel returns
643 enum ieee80211_sdata_state_bits {
645 SDATA_STATE_OFFCHANNEL,
646 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
650 * enum ieee80211_chanctx_mode - channel context configuration mode
652 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
653 * multiple interfaces
654 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
655 * only by a single interface. This can be used for example for
656 * non-fixed channel IBSS.
658 enum ieee80211_chanctx_mode {
659 IEEE80211_CHANCTX_SHARED,
660 IEEE80211_CHANCTX_EXCLUSIVE
663 struct ieee80211_chanctx {
664 struct list_head list;
665 struct rcu_head rcu_head;
667 enum ieee80211_chanctx_mode mode;
671 struct ieee80211_chanctx_conf conf;
674 struct ieee80211_sub_if_data {
675 struct list_head list;
677 struct wireless_dev wdev;
680 struct list_head key_list;
682 /* count for keys needing tailroom space allocation */
683 int crypto_tx_tailroom_needed_cnt;
684 int crypto_tx_tailroom_pending_dec;
685 struct delayed_work dec_tailroom_needed_wk;
687 struct net_device *dev;
688 struct ieee80211_local *local;
694 int drop_unencrypted;
698 /* Fragment table for host-based reassembly */
699 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
700 unsigned int fragment_next;
702 /* TID bitmap for NoAck policy */
705 /* bit field of ACM bits (BIT(802.1D tag)) */
708 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
709 struct ieee80211_key __rcu *default_unicast_key;
710 struct ieee80211_key __rcu *default_multicast_key;
711 struct ieee80211_key __rcu *default_mgmt_key;
714 __be16 control_port_protocol;
715 bool control_port_no_encrypt;
717 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
719 /* used to reconfigure hardware SM PS */
720 struct work_struct recalc_smps;
722 struct work_struct work;
723 struct sk_buff_head skb_queue;
726 enum ieee80211_smps_mode smps_mode;
728 int user_power_level; /* in dBm */
729 int ap_power_level; /* in dBm */
732 struct delayed_work dfs_cac_timer_work;
735 * AP this belongs to: self in AP mode and
736 * corresponding AP in VLAN mode, NULL for
737 * all others (might be needed later in IBSS)
739 struct ieee80211_if_ap *bss;
741 /* bitmap of allowed (non-MCS) rate indexes for rate control */
742 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
744 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
745 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
748 struct ieee80211_if_ap ap;
749 struct ieee80211_if_wds wds;
750 struct ieee80211_if_vlan vlan;
751 struct ieee80211_if_managed mgd;
752 struct ieee80211_if_ibss ibss;
753 struct ieee80211_if_mesh mesh;
757 spinlock_t cleanup_stations_lock;
758 struct list_head cleanup_stations;
759 struct work_struct cleanup_stations_wk;
761 #ifdef CONFIG_MAC80211_DEBUGFS
763 struct dentry *subdir_stations;
764 struct dentry *default_unicast_key;
765 struct dentry *default_multicast_key;
766 struct dentry *default_mgmt_key;
770 /* must be last, dynamically sized area in this! */
771 struct ieee80211_vif vif;
775 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
777 return container_of(p, struct ieee80211_sub_if_data, vif);
780 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
781 __acquires(&sdata->wdev.mtx)
783 mutex_lock(&sdata->wdev.mtx);
784 __acquire(&sdata->wdev.mtx);
787 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
788 __releases(&sdata->wdev.mtx)
790 mutex_unlock(&sdata->wdev.mtx);
791 __release(&sdata->wdev.mtx);
795 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
797 lockdep_assert_held(&sdata->wdev.mtx);
800 static inline enum ieee80211_band
801 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
803 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
804 struct ieee80211_chanctx_conf *chanctx_conf;
807 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
808 if (!WARN_ON(!chanctx_conf))
809 band = chanctx_conf->def.chan->band;
816 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
818 switch (chandef->width) {
819 case NL80211_CHAN_WIDTH_5:
821 case NL80211_CHAN_WIDTH_10:
829 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
831 struct ieee80211_chanctx_conf *chanctx_conf;
835 chanctx_conf = rcu_dereference(vif->chanctx_conf);
837 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
843 enum sdata_queue_type {
844 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
845 IEEE80211_SDATA_QUEUE_AGG_START = 1,
846 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
850 IEEE80211_RX_MSG = 1,
851 IEEE80211_TX_STATUS_MSG = 2,
854 enum queue_stop_reason {
855 IEEE80211_QUEUE_STOP_REASON_DRIVER,
856 IEEE80211_QUEUE_STOP_REASON_PS,
857 IEEE80211_QUEUE_STOP_REASON_CSA,
858 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
859 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
860 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
861 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
862 IEEE80211_QUEUE_STOP_REASON_FLUSH,
865 #ifdef CONFIG_MAC80211_LEDS
866 struct tpt_led_trigger {
867 struct led_trigger trig;
869 const struct ieee80211_tpt_blink *blink_table;
870 unsigned int blink_table_len;
871 struct timer_list timer;
872 unsigned long prev_traffic;
873 unsigned long tx_bytes, rx_bytes;
874 unsigned int active, want;
880 * mac80211 scan flags - currently active scan mode
882 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
883 * well be on the operating channel
884 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
885 * determine if we are on the operating channel or not
886 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
887 * channel. This should not interrupt normal traffic.
888 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
889 * that the scan completed.
890 * @SCAN_ABORTED: Set for our scan work function when the driver reported
891 * a scan complete for an aborted scan.
896 SCAN_ONCHANNEL_SCANNING,
902 * enum mac80211_scan_state - scan state machine states
904 * @SCAN_DECISION: Main entry point to the scan state machine, this state
905 * determines if we should keep on scanning or switch back to the
907 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
908 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
909 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
911 * @SCAN_RESUME: Resume the scan and scan the next channel
912 * @SCAN_ABORT: Abort the scan and go back to operating channel
914 enum mac80211_scan_state {
923 struct ieee80211_local {
924 /* embed the driver visible part.
925 * don't cast (use the static inlines below), but we keep
926 * it first anyway so they become a no-op */
927 struct ieee80211_hw hw;
929 const struct ieee80211_ops *ops;
932 * private workqueue to mac80211. mac80211 makes this accessible
933 * via ieee80211_queue_work()
935 struct workqueue_struct *workqueue;
937 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
938 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
939 spinlock_t queue_stop_reason_lock;
942 int monitors, cooked_mntrs;
943 /* number of interfaces with corresponding FIF_ flags */
944 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
947 unsigned int filter_flags; /* FIF_* */
949 bool wiphy_ciphers_allocated;
953 /* protects the aggregated multicast list and filter calls */
954 spinlock_t filter_lock;
956 /* used for uploading changed mc list */
957 struct work_struct reconfig_filter;
959 /* aggregated multicast list */
960 struct netdev_hw_addr_list mc_list;
962 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
965 * suspended is true if we finished all the suspend _and_ we have
966 * not yet come up from resume. This is to be used by mac80211
967 * to ensure driver sanity during suspend and mac80211's own
968 * sanity. It can eventually be used for WoW as well.
973 * Resuming is true while suspended, but when we're reprogramming the
974 * hardware -- at that time it's allowed to use ieee80211_queue_work()
975 * again even though some other parts of the stack are still suspended
976 * and we still drop received frames to avoid waking the stack.
981 * quiescing is true during the suspend process _only_ to
982 * ease timer cancelling etc.
986 /* device is started */
989 /* device is during a HW reconfig */
992 /* wowlan is enabled -- don't reconfig on resume */
995 /* DFS/radar detection is enabled */
996 bool radar_detect_enabled;
997 struct work_struct radar_detected_work;
999 /* number of RX chains the hardware has */
1002 int tx_headroom; /* required headroom for hardware/radiotap */
1004 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1005 * added to skb_queue will be processed, but frames in
1006 * skb_queue_unreliable may be dropped if the total length of these
1007 * queues increases over the limit. */
1008 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1009 struct tasklet_struct tasklet;
1010 struct sk_buff_head skb_queue;
1011 struct sk_buff_head skb_queue_unreliable;
1013 spinlock_t rx_path_lock;
1017 * The mutex only protects the list, hash table and
1018 * counter, reads are done with RCU.
1020 struct mutex sta_mtx;
1021 spinlock_t tim_lock;
1022 unsigned long num_sta;
1023 struct list_head sta_list;
1024 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1025 struct timer_list sta_cleanup;
1028 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1029 struct tasklet_struct tx_pending_tasklet;
1031 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1033 /* number of interfaces with corresponding IFF_ flags */
1034 atomic_t iff_allmultis, iff_promiscs;
1036 struct rate_control_ref *rate_ctrl;
1038 struct crypto_cipher *wep_tx_tfm;
1039 struct crypto_cipher *wep_rx_tfm;
1043 struct list_head interfaces;
1044 struct mutex iflist_mtx;
1047 * Key mutex, protects sdata's key_list and sta_info's
1048 * key pointers (write access, they're RCU.)
1050 struct mutex key_mtx;
1052 /* mutex for scan and work locking */
1055 /* Scanning and BSS list */
1056 unsigned long scanning;
1057 struct cfg80211_ssid scan_ssid;
1058 struct cfg80211_scan_request *int_scan_req;
1059 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1060 struct cfg80211_chan_def scan_chandef;
1061 enum ieee80211_band hw_scan_band;
1062 int scan_channel_idx;
1064 int hw_scan_ies_bufsize;
1066 struct work_struct sched_scan_stopped_work;
1067 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1069 unsigned long leave_oper_channel_time;
1070 enum mac80211_scan_state next_scan_state;
1071 struct delayed_work scan_work;
1072 struct ieee80211_sub_if_data __rcu *scan_sdata;
1073 struct cfg80211_chan_def csa_chandef;
1074 /* For backward compatibility only -- do not use */
1075 struct cfg80211_chan_def _oper_chandef;
1077 /* Temporary remain-on-channel for off-channel operations */
1078 struct ieee80211_channel *tmp_channel;
1080 /* channel contexts */
1081 struct list_head chanctx_list;
1082 struct mutex chanctx_mtx;
1085 /* dot11CountersTable */
1086 u32 dot11TransmittedFragmentCount;
1087 u32 dot11MulticastTransmittedFrameCount;
1088 u32 dot11FailedCount;
1089 u32 dot11RetryCount;
1090 u32 dot11MultipleRetryCount;
1091 u32 dot11FrameDuplicateCount;
1092 u32 dot11ReceivedFragmentCount;
1093 u32 dot11MulticastReceivedFrameCount;
1094 u32 dot11TransmittedFrameCount;
1096 #ifdef CONFIG_MAC80211_LEDS
1097 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1098 struct tpt_led_trigger *tpt_led_trigger;
1099 char tx_led_name[32], rx_led_name[32],
1100 assoc_led_name[32], radio_led_name[32];
1103 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1104 /* TX/RX handler statistics */
1105 unsigned int tx_handlers_drop;
1106 unsigned int tx_handlers_queued;
1107 unsigned int tx_handlers_drop_unencrypted;
1108 unsigned int tx_handlers_drop_fragment;
1109 unsigned int tx_handlers_drop_wep;
1110 unsigned int tx_handlers_drop_not_assoc;
1111 unsigned int tx_handlers_drop_unauth_port;
1112 unsigned int rx_handlers_drop;
1113 unsigned int rx_handlers_queued;
1114 unsigned int rx_handlers_drop_nullfunc;
1115 unsigned int rx_handlers_drop_defrag;
1116 unsigned int rx_handlers_drop_short;
1117 unsigned int tx_expand_skb_head;
1118 unsigned int tx_expand_skb_head_cloned;
1119 unsigned int rx_expand_skb_head;
1120 unsigned int rx_expand_skb_head2;
1121 unsigned int rx_handlers_fragments;
1122 unsigned int tx_status_drop;
1123 #define I802_DEBUG_INC(c) (c)++
1124 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1125 #define I802_DEBUG_INC(c) do { } while (0)
1126 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1129 int total_ps_buffered; /* total number of all buffered unicast and
1130 * multicast packets for power saving stations
1134 bool offchannel_ps_enabled;
1136 * PS can only be enabled when we have exactly one managed
1137 * interface (and monitors) in PS, this then points there.
1139 struct ieee80211_sub_if_data *ps_sdata;
1140 struct work_struct dynamic_ps_enable_work;
1141 struct work_struct dynamic_ps_disable_work;
1142 struct timer_list dynamic_ps_timer;
1143 struct notifier_block network_latency_notifier;
1144 struct notifier_block ifa_notifier;
1145 struct notifier_block ifa6_notifier;
1148 * The dynamic ps timeout configured from user space via WEXT -
1149 * this will override whatever chosen by mac80211 internally.
1151 int dynamic_ps_forced_timeout;
1153 int user_power_level; /* in dBm, for all interfaces */
1155 enum ieee80211_smps_mode smps_mode;
1157 struct work_struct restart_work;
1159 #ifdef CONFIG_MAC80211_DEBUGFS
1160 struct local_debugfsdentries {
1161 struct dentry *rcdir;
1162 struct dentry *keys;
1167 * Remain-on-channel support
1169 struct list_head roc_list;
1170 struct work_struct hw_roc_start, hw_roc_done;
1171 unsigned long hw_roc_start_time;
1172 u64 roc_cookie_counter;
1174 struct idr ack_status_frames;
1175 spinlock_t ack_status_lock;
1177 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1179 /* virtual monitor interface */
1180 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1181 struct cfg80211_chan_def monitor_chandef;
1184 static inline struct ieee80211_sub_if_data *
1185 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1187 return netdev_priv(dev);
1190 static inline struct ieee80211_sub_if_data *
1191 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1193 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1196 /* this struct represents 802.11n's RA/TID combination */
1197 struct ieee80211_ra_tid {
1202 /* Parsed Information Elements */
1203 struct ieee802_11_elems {
1207 /* pointers to IEs */
1209 const u8 *supp_rates;
1210 const u8 *ds_params;
1211 const struct ieee80211_tim_ie *tim;
1212 const u8 *challenge;
1215 const u8 *ext_supp_rates;
1217 const u8 *wmm_param;
1218 const struct ieee80211_ht_cap *ht_cap_elem;
1219 const struct ieee80211_ht_operation *ht_operation;
1220 const struct ieee80211_vht_cap *vht_cap_elem;
1221 const struct ieee80211_vht_operation *vht_operation;
1222 const struct ieee80211_meshconf_ie *mesh_config;
1225 const __le16 *awake_window;
1229 const struct ieee80211_rann_ie *rann;
1230 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1231 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1232 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1233 const u8 *country_elem;
1234 const u8 *pwr_constr_elem;
1235 const struct ieee80211_timeout_interval_ie *timeout_int;
1236 const u8 *opmode_notif;
1237 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1239 /* length of them, respectively */
1245 u8 ext_supp_rates_len;
1253 u8 country_elem_len;
1255 /* whether a parse error occurred while retrieving these elements */
1259 static inline struct ieee80211_local *hw_to_local(
1260 struct ieee80211_hw *hw)
1262 return container_of(hw, struct ieee80211_local, hw);
1266 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1268 return ether_addr_equal(raddr, addr) ||
1269 is_broadcast_ether_addr(raddr);
1273 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1275 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1276 status->flag & RX_FLAG_MACTIME_END);
1277 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1280 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1281 struct ieee80211_rx_status *status,
1282 unsigned int mpdu_len,
1283 unsigned int mpdu_offset);
1284 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1285 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1286 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1288 void ieee80211_configure_filter(struct ieee80211_local *local);
1289 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1292 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1293 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1294 struct cfg80211_auth_request *req);
1295 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1296 struct cfg80211_assoc_request *req);
1297 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1298 struct cfg80211_deauth_request *req);
1299 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1300 struct cfg80211_disassoc_request *req);
1301 void ieee80211_send_pspoll(struct ieee80211_local *local,
1302 struct ieee80211_sub_if_data *sdata);
1303 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1304 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1305 int ieee80211_max_network_latency(struct notifier_block *nb,
1306 unsigned long data, void *dummy);
1307 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1308 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1309 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1310 struct sk_buff *skb);
1311 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1312 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1313 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1314 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1315 __le16 fc, bool acked);
1316 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1319 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1320 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1321 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1322 const u8 *bssid, const u8 *addr, u32 supp_rates);
1323 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1324 struct cfg80211_ibss_params *params);
1325 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1326 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1327 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1328 struct sk_buff *skb);
1331 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1332 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1333 struct sk_buff *skb);
1335 /* scan/BSS handling */
1336 void ieee80211_scan_work(struct work_struct *work);
1337 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1338 const u8 *ssid, u8 ssid_len,
1339 struct ieee80211_channel *chan,
1340 enum nl80211_bss_scan_width scan_width);
1341 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1342 struct cfg80211_scan_request *req);
1343 void ieee80211_scan_cancel(struct ieee80211_local *local);
1344 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1345 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1347 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1348 struct ieee80211_bss *
1349 ieee80211_bss_info_update(struct ieee80211_local *local,
1350 struct ieee80211_rx_status *rx_status,
1351 struct ieee80211_mgmt *mgmt,
1353 struct ieee802_11_elems *elems,
1354 struct ieee80211_channel *channel);
1355 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1356 struct ieee80211_bss *bss);
1358 /* scheduled scan handling */
1359 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1360 struct cfg80211_sched_scan_request *req);
1361 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1362 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1364 /* off-channel helpers */
1365 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1366 void ieee80211_offchannel_return(struct ieee80211_local *local);
1367 void ieee80211_roc_setup(struct ieee80211_local *local);
1368 void ieee80211_start_next_roc(struct ieee80211_local *local);
1369 void ieee80211_roc_purge(struct ieee80211_local *local,
1370 struct ieee80211_sub_if_data *sdata);
1371 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1372 void ieee80211_sw_roc_work(struct work_struct *work);
1373 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1375 /* interface handling */
1376 int ieee80211_iface_init(void);
1377 void ieee80211_iface_exit(void);
1378 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1379 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1380 struct vif_params *params);
1381 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1382 enum nl80211_iftype type);
1383 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1384 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1385 u32 ieee80211_idle_off(struct ieee80211_local *local);
1386 void ieee80211_recalc_idle(struct ieee80211_local *local);
1387 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1389 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1390 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1391 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1392 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1394 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1395 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1397 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1399 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1403 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1404 void ieee80211_tx_pending(unsigned long data);
1405 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1406 struct net_device *dev);
1407 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1408 struct net_device *dev);
1409 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1410 struct sk_buff_head *skbs);
1413 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1414 struct ieee80211_sta_ht_cap *ht_cap);
1415 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1416 struct ieee80211_supported_band *sband,
1417 const struct ieee80211_ht_cap *ht_cap_ie,
1418 struct sta_info *sta);
1419 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1420 const u8 *da, u16 tid,
1421 u16 initiator, u16 reason_code);
1422 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1423 enum ieee80211_smps_mode smps, const u8 *da,
1425 void ieee80211_request_smps_work(struct work_struct *work);
1427 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1428 u16 initiator, u16 reason, bool stop);
1429 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1430 u16 initiator, u16 reason, bool stop);
1431 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1432 enum ieee80211_agg_stop_reason reason);
1433 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1434 struct sta_info *sta,
1435 struct ieee80211_mgmt *mgmt, size_t len);
1436 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1437 struct sta_info *sta,
1438 struct ieee80211_mgmt *mgmt,
1440 void ieee80211_process_addba_request(struct ieee80211_local *local,
1441 struct sta_info *sta,
1442 struct ieee80211_mgmt *mgmt,
1445 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1446 enum ieee80211_agg_stop_reason reason);
1447 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1448 enum ieee80211_agg_stop_reason reason);
1449 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1450 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1451 void ieee80211_ba_session_work(struct work_struct *work);
1452 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1453 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1455 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1459 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1460 struct ieee80211_supported_band *sband,
1461 const struct ieee80211_vht_cap *vht_cap_ie,
1462 struct sta_info *sta);
1463 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1464 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1465 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1466 struct sta_info *sta, u8 opmode,
1467 enum ieee80211_band band, bool nss_only);
1468 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1469 struct ieee80211_sta_vht_cap *vht_cap);
1471 /* Spectrum management */
1472 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1473 struct ieee80211_mgmt *mgmt,
1476 /* Suspend/resume and hw reconfiguration */
1477 int ieee80211_reconfig(struct ieee80211_local *local);
1478 void ieee80211_stop_device(struct ieee80211_local *local);
1480 int __ieee80211_suspend(struct ieee80211_hw *hw,
1481 struct cfg80211_wowlan *wowlan);
1483 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1485 struct ieee80211_local *local = hw_to_local(hw);
1487 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1488 "%s: resume with hardware scan still in progress\n",
1489 wiphy_name(hw->wiphy));
1491 return ieee80211_reconfig(hw_to_local(hw));
1494 /* utility functions/constants */
1495 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1496 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1497 enum nl80211_iftype type);
1498 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1499 int rate, int erp, int short_preamble,
1501 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1502 struct ieee80211_hdr *hdr, const u8 *tsc,
1504 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1506 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1507 enum ieee80211_band band);
1509 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1510 struct sk_buff *skb, int tid,
1511 enum ieee80211_band band);
1514 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1515 struct sk_buff *skb, int tid,
1516 enum ieee80211_band band)
1519 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1523 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1524 struct sk_buff *skb, int tid)
1526 struct ieee80211_chanctx_conf *chanctx_conf;
1529 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1530 if (WARN_ON(!chanctx_conf)) {
1536 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1537 chanctx_conf->def.chan->band);
1541 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1542 struct sk_buff *skb)
1544 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1545 ieee80211_tx_skb_tid(sdata, skb, 7);
1548 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1549 struct ieee802_11_elems *elems,
1550 u64 filter, u32 crc);
1551 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1553 struct ieee802_11_elems *elems)
1555 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1558 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1559 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1560 void ieee80211_dynamic_ps_timer(unsigned long data);
1561 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1562 struct ieee80211_sub_if_data *sdata,
1564 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1565 struct ieee80211_hdr *hdr);
1566 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1567 struct ieee80211_hdr *hdr, bool ack);
1569 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1570 unsigned long queues,
1571 enum queue_stop_reason reason);
1572 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1573 unsigned long queues,
1574 enum queue_stop_reason reason);
1575 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1576 enum queue_stop_reason reason);
1577 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1578 enum queue_stop_reason reason);
1579 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1580 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1581 struct sk_buff *skb);
1582 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1583 struct sk_buff_head *skbs,
1584 void (*fn)(void *data), void *data);
1585 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1586 struct sk_buff_head *skbs)
1588 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1590 void ieee80211_flush_queues(struct ieee80211_local *local,
1591 struct ieee80211_sub_if_data *sdata);
1593 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1594 u16 transaction, u16 auth_alg, u16 status,
1595 const u8 *extra, size_t extra_len, const u8 *bssid,
1596 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1598 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1599 const u8 *bssid, u16 stype, u16 reason,
1600 bool send_frame, u8 *frame_buf);
1601 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1602 size_t buffer_len, const u8 *ie, size_t ie_len,
1603 enum ieee80211_band band, u32 rate_mask,
1604 struct cfg80211_chan_def *chandef);
1605 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1606 u8 *dst, u32 ratemask,
1607 struct ieee80211_channel *chan,
1608 const u8 *ssid, size_t ssid_len,
1609 const u8 *ie, size_t ie_len,
1611 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1612 const u8 *ssid, size_t ssid_len,
1613 const u8 *ie, size_t ie_len,
1614 u32 ratemask, bool directed, u32 tx_flags,
1615 struct ieee80211_channel *channel, bool scan);
1617 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1618 struct ieee802_11_elems *elems,
1619 enum ieee80211_band band, u32 *basic_rates);
1620 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1621 enum ieee80211_smps_mode smps_mode);
1622 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1624 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1625 const u8 *ids, int n_ids, size_t offset);
1626 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1627 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1629 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1630 const struct cfg80211_chan_def *chandef,
1632 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1634 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1635 const struct ieee80211_supported_band *sband,
1636 const u8 *srates, int srates_len, u32 *rates);
1637 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1638 struct sk_buff *skb, bool need_basic,
1639 enum ieee80211_band band);
1640 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1641 struct sk_buff *skb, bool need_basic,
1642 enum ieee80211_band band);
1644 /* channel management */
1645 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1646 const struct ieee80211_ht_operation *ht_oper,
1647 struct cfg80211_chan_def *chandef);
1650 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1651 const struct cfg80211_chan_def *chandef,
1652 enum ieee80211_chanctx_mode mode);
1654 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1655 const struct cfg80211_chan_def *chandef,
1657 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1658 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1659 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1662 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1663 struct ieee80211_chanctx *chanctx);
1664 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1665 struct ieee80211_chanctx *chanctx);
1667 void ieee80211_dfs_cac_timer(unsigned long data);
1668 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1669 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1670 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1672 #ifdef CONFIG_MAC80211_NOINLINE
1673 #define debug_noinline noinline
1675 #define debug_noinline
1678 #endif /* IEEE80211_I_H */