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 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
60 * Some APs experience problems when working with U-APSD. Decrease the
61 * probability of that happening by using legacy mode for all ACs but VO.
62 * The AP that caused us trouble was a Cisco 4410N. It ignores our
63 * setting, and always treats non-VO ACs as legacy.
65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
68 #define IEEE80211_DEFAULT_MAX_SP_LEN \
69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
73 struct ieee80211_fragment_entry {
74 unsigned long first_frag_time;
76 unsigned int rx_queue;
77 unsigned int last_frag;
78 unsigned int extra_len;
79 struct sk_buff_head skb_list;
80 int ccmp; /* Whether fragments were encrypted with CCMP */
81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
85 struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
91 #define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
97 * During association, we save an ERP value from a probe response so
98 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
100 * otherwise, you probably don't want to use them.
105 /* Keep track of the corruption of the last beacon/probe response. */
108 /* Keep track of what bits of information we have valid info for. */
113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
117 * These are bss flags that are attached to a bss in the
118 * @corrupt_data field of &struct ieee80211_bss.
120 enum ieee80211_bss_corrupt_data_flags {
121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
126 * enum ieee80211_valid_data_flags - BSS valid data flags
127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
131 * These are bss flags that are attached to a bss in the
132 * @valid_data field of &struct ieee80211_bss. They show which parts
133 * of the data structure were recieved as a result of an un-corrupted
134 * beacon/probe response.
136 enum ieee80211_bss_valid_data_flags {
137 IEEE80211_BSS_VALID_WMM = BIT(1),
138 IEEE80211_BSS_VALID_RATES = BIT(2),
139 IEEE80211_BSS_VALID_ERP = BIT(3)
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_UNICAST BIT(1)
148 #define IEEE80211_TX_PS_BUFFERED BIT(2)
150 struct ieee80211_tx_data {
152 struct sk_buff_head skbs;
153 struct ieee80211_local *local;
154 struct ieee80211_sub_if_data *sdata;
155 struct sta_info *sta;
156 struct ieee80211_key *key;
157 struct ieee80211_tx_rate rate;
163 typedef unsigned __bitwise__ ieee80211_rx_result;
164 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
165 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
166 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
167 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
170 * enum ieee80211_packet_rx_flags - packet RX flags
171 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
172 * (incl. multicast frames)
173 * @IEEE80211_RX_FRAGMENTED: fragmented frame
174 * @IEEE80211_RX_AMSDU: a-MSDU packet
175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
178 * These are per-frame flags that are attached to a frame in the
179 * @rx_flags field of &struct ieee80211_rx_status.
181 enum ieee80211_packet_rx_flags {
182 IEEE80211_RX_RA_MATCH = BIT(1),
183 IEEE80211_RX_FRAGMENTED = BIT(2),
184 IEEE80211_RX_AMSDU = BIT(3),
185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
190 * enum ieee80211_rx_flags - RX data flags
192 * @IEEE80211_RX_CMNTR: received on cooked monitor already
193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
194 * to cfg80211_report_obss_beacon().
196 * These flags are used across handling multiple interfaces
197 * for a single frame.
199 enum ieee80211_rx_flags {
200 IEEE80211_RX_CMNTR = BIT(0),
201 IEEE80211_RX_BEACON_REPORTED = BIT(1),
204 struct ieee80211_rx_data {
206 struct ieee80211_local *local;
207 struct ieee80211_sub_if_data *sdata;
208 struct sta_info *sta;
209 struct ieee80211_key *key;
214 * Index into sequence numbers array, 0..16
215 * since the last (16) is used for non-QoS,
216 * will be 16 on non-QoS frames.
221 * Index into the security IV/PN arrays, 0..16
222 * since the last (16) is used for CCMP-encrypted
223 * management frames, will be set to 16 on mgmt
224 * frames and 0 on non-QoS frames.
234 int head_len, tail_len;
235 struct ieee80211_meshconf_ie *meshconf;
236 struct rcu_head rcu_head;
240 struct rcu_head rcu_head;
246 /* yes, this looks ugly, but guarantees that we can later use
248 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
249 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
250 __aligned(__alignof__(unsigned long));
251 struct sk_buff_head bc_buf;
252 atomic_t num_sta_ps; /* number of stations in PS mode */
257 struct ieee80211_if_ap {
258 struct beacon_data __rcu *beacon;
259 struct probe_resp __rcu *probe_resp;
261 /* to be used after channel switch. */
262 struct cfg80211_beacon_data *next_beacon;
263 struct list_head vlans;
266 atomic_t num_mcast_sta; /* number of stations receiving multicast */
267 enum ieee80211_smps_mode req_smps, /* requested smps mode */
268 driver_smps_mode; /* smps mode request */
270 struct work_struct request_smps_work;
273 struct ieee80211_if_wds {
274 struct sta_info *sta;
275 u8 remote_addr[ETH_ALEN];
278 struct ieee80211_if_vlan {
279 struct list_head list;
281 /* used for all tx if the VLAN is configured to 4-addr mode */
282 struct sta_info __rcu *sta;
286 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
287 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
288 __u32 fwded_frames; /* Mesh total forwarded frames */
289 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
290 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
291 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
294 #define PREQ_Q_F_START 0x1
295 #define PREQ_Q_F_REFRESH 0x2
296 struct mesh_preq_queue {
297 struct list_head list;
303 #define IEEE80211_ROC_MIN_LEFT 1
305 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
308 struct ieee80211_roc_work {
309 struct list_head list;
310 struct list_head dependents;
312 struct delayed_work work;
314 struct ieee80211_sub_if_data *sdata;
316 struct ieee80211_channel *chan;
318 bool started, abort, hw_begun, notified;
322 unsigned long hw_start_time;
324 u32 duration, req_duration;
325 struct sk_buff *frame;
326 u64 cookie, mgmt_tx_cookie;
327 enum ieee80211_roc_type type;
330 /* flags used in struct ieee80211_if_managed.flags */
331 enum ieee80211_sta_flags {
332 IEEE80211_STA_CONNECTION_POLL = BIT(1),
333 IEEE80211_STA_CONTROL_PORT = BIT(2),
334 IEEE80211_STA_DISABLE_HT = BIT(4),
335 IEEE80211_STA_CSA_RECEIVED = BIT(5),
336 IEEE80211_STA_MFP_ENABLED = BIT(6),
337 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
338 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
339 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
340 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
341 IEEE80211_STA_DISABLE_VHT = BIT(11),
342 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
343 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
344 IEEE80211_STA_DISABLE_WMM = BIT(14),
347 struct ieee80211_mgd_auth_data {
348 struct cfg80211_bss *bss;
349 unsigned long timeout;
351 u16 algorithm, expected_transaction;
353 u8 key[WLAN_KEY_LEN_WEP104];
356 bool timeout_started;
358 u16 sae_trans, sae_status;
363 struct ieee80211_mgd_assoc_data {
364 struct cfg80211_bss *bss;
365 const u8 *supp_rates;
367 unsigned long timeout;
371 u8 prev_bssid[ETH_ALEN];
372 u8 ssid[IEEE80211_MAX_SSID_LEN];
378 bool timeout_started;
382 struct ieee80211_vht_cap ap_vht_cap;
388 struct ieee80211_if_managed {
389 struct timer_list timer;
390 struct timer_list conn_mon_timer;
391 struct timer_list bcn_mon_timer;
392 struct timer_list chswitch_timer;
393 struct work_struct monitor_work;
394 struct work_struct chswitch_work;
395 struct work_struct beacon_connection_loss_work;
396 struct work_struct csa_connection_drop_work;
398 unsigned long beacon_timeout;
399 unsigned long probe_timeout;
400 int probe_send_count;
401 bool nullfunc_failed;
402 bool connection_loss;
404 struct cfg80211_bss *associated;
405 struct ieee80211_mgd_auth_data *auth_data;
406 struct ieee80211_mgd_assoc_data *assoc_data;
412 bool powersave; /* powersave requested for this iface */
413 bool broken_ap; /* AP is broken -- turn off powersave */
416 enum ieee80211_smps_mode req_smps, /* requested smps mode */
417 driver_smps_mode; /* smps mode request */
419 struct work_struct request_smps_work;
423 bool beacon_crc_valid;
427 bool status_received;
431 IEEE80211_MFP_DISABLED,
432 IEEE80211_MFP_OPTIONAL,
433 IEEE80211_MFP_REQUIRED
434 } mfp; /* management frame protection */
437 * Bitmask of enabled u-apsd queues,
438 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
441 unsigned int uapsd_queues;
444 * Maximum number of buffered frames AP can deliver during a
445 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
446 * Needs a new association to take effect.
448 unsigned int uapsd_max_sp_len;
450 int wmm_last_param_set;
456 /* Signal strength from the last Beacon frame in the current BSS. */
457 int last_beacon_signal;
460 * Weighted average of the signal strength from Beacon frames in the
461 * current BSS. This is in units of 1/16 of the signal unit to maintain
462 * accuracy and to speed up calculations, i.e., the value need to be
463 * divided by 16 to get the actual value.
465 int ave_beacon_signal;
468 * Number of Beacon frames used in ave_beacon_signal. This can be used
469 * to avoid generating less reliable cqm events that would be based
470 * only on couple of received frames.
472 unsigned int count_beacon_signal;
475 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
476 * that triggered a cqm event. 0 indicates that no event has been
477 * generated for the current association.
479 int last_cqm_event_signal;
482 * State variables for keeping track of RSSI of the AP currently
483 * connected to and informing driver when RSSI has gone
484 * below/above a certain threshold.
486 int rssi_min_thold, rssi_max_thold;
487 int last_ave_beacon_signal;
489 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
490 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
491 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
492 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
495 struct ieee80211_if_ibss {
496 struct timer_list timer;
497 struct work_struct csa_connection_drop_work;
499 unsigned long last_scan_completed;
508 bool userspace_handles_dfs;
510 u8 bssid[ETH_ALEN] __aligned(2);
511 u8 ssid[IEEE80211_MAX_SSID_LEN];
514 struct cfg80211_chan_def chandef;
516 unsigned long ibss_join_req;
517 /* probe response/beacon for IBSS */
518 struct beacon_data __rcu *presp;
520 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
521 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
523 spinlock_t incomplete_lock;
524 struct list_head incomplete_stations;
527 IEEE80211_IBSS_MLME_SEARCH,
528 IEEE80211_IBSS_MLME_JOINED,
533 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
535 * these declarations define the interface, which enables
536 * vendor-specific mesh synchronization
539 struct ieee802_11_elems;
540 struct ieee80211_mesh_sync_ops {
541 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
543 struct ieee80211_mgmt *mgmt,
544 struct ieee802_11_elems *elems,
545 struct ieee80211_rx_status *rx_status);
547 /* should be called with beacon_data under RCU read lock */
548 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
549 struct beacon_data *beacon);
550 /* add other framework functions here */
553 struct mesh_csa_settings {
554 struct rcu_head rcu_head;
555 struct cfg80211_csa_settings settings;
558 struct ieee80211_if_mesh {
559 struct timer_list housekeeping_timer;
560 struct timer_list mesh_path_timer;
561 struct timer_list mesh_path_root_timer;
563 unsigned long wrkq_flags;
564 unsigned long mbss_changed;
566 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
568 /* Active Path Selection Protocol Identifier */
570 /* Active Path Selection Metric Identifier */
572 /* Congestion Control Mode Identifier */
574 /* Synchronization Protocol Identifier */
576 /* Authentication Protocol Identifier */
578 /* Local mesh Sequence Number */
580 /* Last used PREQ ID */
583 /* Timestamp of last SN update */
584 unsigned long last_sn_update;
585 /* Time when it's ok to send next PERR */
586 unsigned long next_perr;
587 /* Timestamp of last PREQ sent */
588 unsigned long last_preq;
589 struct mesh_rmc *rmc;
590 spinlock_t mesh_preq_queue_lock;
591 struct mesh_preq_queue preq_queue;
593 struct mesh_stats mshstats;
594 struct mesh_config mshcfg;
595 atomic_t estab_plinks;
597 bool accepting_plinks;
599 struct beacon_data __rcu *beacon;
603 IEEE80211_MESH_SEC_NONE = 0x0,
604 IEEE80211_MESH_SEC_AUTHED = 0x1,
605 IEEE80211_MESH_SEC_SECURED = 0x2,
608 /* Extensible Synchronization Framework */
609 const struct ieee80211_mesh_sync_ops *sync_ops;
610 s64 sync_offset_clockdrift_max;
611 spinlock_t sync_offset_lock;
613 /* mesh power save */
614 enum nl80211_mesh_power_mode nonpeer_pm;
615 int ps_peers_light_sleep;
616 int ps_peers_deep_sleep;
618 /* Channel Switching Support */
619 struct mesh_csa_settings __rcu *csa;
624 /* offset from skb->data while building IE */
628 #ifdef CONFIG_MAC80211_MESH
629 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
630 do { (msh)->mshstats.name++; } while (0)
632 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
637 * enum ieee80211_sub_if_data_flags - virtual interface flags
639 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
640 * @IEEE80211_SDATA_PROMISC: interface is promisc
641 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
642 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
643 * associated stations and deliver multicast frames both
644 * back to wireless media and to the local net stack.
645 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
646 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
648 enum ieee80211_sub_if_data_flags {
649 IEEE80211_SDATA_ALLMULTI = BIT(0),
650 IEEE80211_SDATA_PROMISC = BIT(1),
651 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
652 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
653 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
654 IEEE80211_SDATA_IN_DRIVER = BIT(5),
658 * enum ieee80211_sdata_state_bits - virtual interface state bits
659 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
660 * mirrors netif_running() but is separate for interface type
661 * change handling while the interface is up
662 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
663 * mode, so queues are stopped
664 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
665 * to offchannel, reset when offchannel returns
667 enum ieee80211_sdata_state_bits {
669 SDATA_STATE_OFFCHANNEL,
670 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
674 * enum ieee80211_chanctx_mode - channel context configuration mode
676 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
677 * multiple interfaces
678 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
679 * only by a single interface. This can be used for example for
680 * non-fixed channel IBSS.
682 enum ieee80211_chanctx_mode {
683 IEEE80211_CHANCTX_SHARED,
684 IEEE80211_CHANCTX_EXCLUSIVE
687 struct ieee80211_chanctx {
688 struct list_head list;
689 struct rcu_head rcu_head;
691 enum ieee80211_chanctx_mode mode;
695 struct ieee80211_chanctx_conf conf;
698 struct mac80211_qos_map {
699 struct cfg80211_qos_map qos_map;
700 struct rcu_head rcu_head;
703 struct ieee80211_sub_if_data {
704 struct list_head list;
706 struct wireless_dev wdev;
709 struct list_head key_list;
711 /* count for keys needing tailroom space allocation */
712 int crypto_tx_tailroom_needed_cnt;
713 int crypto_tx_tailroom_pending_dec;
714 struct delayed_work dec_tailroom_needed_wk;
716 struct net_device *dev;
717 struct ieee80211_local *local;
723 int drop_unencrypted;
727 /* Fragment table for host-based reassembly */
728 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
729 unsigned int fragment_next;
731 /* TID bitmap for NoAck policy */
734 /* bit field of ACM bits (BIT(802.1D tag)) */
737 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
738 struct ieee80211_key __rcu *default_unicast_key;
739 struct ieee80211_key __rcu *default_multicast_key;
740 struct ieee80211_key __rcu *default_mgmt_key;
743 __be16 control_port_protocol;
744 bool control_port_no_encrypt;
745 int encrypt_headroom;
747 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
748 struct mac80211_qos_map __rcu *qos_map;
750 struct work_struct csa_finalize_work;
751 int csa_counter_offset_beacon;
752 int csa_counter_offset_presp;
753 bool csa_radar_required;
754 struct cfg80211_chan_def csa_chandef;
756 /* used to reconfigure hardware SM PS */
757 struct work_struct recalc_smps;
759 struct work_struct work;
760 struct sk_buff_head skb_queue;
763 enum ieee80211_smps_mode smps_mode;
765 int user_power_level; /* in dBm */
766 int ap_power_level; /* in dBm */
769 struct delayed_work dfs_cac_timer_work;
772 * AP this belongs to: self in AP mode and
773 * corresponding AP in VLAN mode, NULL for
774 * all others (might be needed later in IBSS)
776 struct ieee80211_if_ap *bss;
778 /* bitmap of allowed (non-MCS) rate indexes for rate control */
779 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
781 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
782 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
785 struct ieee80211_if_ap ap;
786 struct ieee80211_if_wds wds;
787 struct ieee80211_if_vlan vlan;
788 struct ieee80211_if_managed mgd;
789 struct ieee80211_if_ibss ibss;
790 struct ieee80211_if_mesh mesh;
794 #ifdef CONFIG_MAC80211_DEBUGFS
796 struct dentry *subdir_stations;
797 struct dentry *default_unicast_key;
798 struct dentry *default_multicast_key;
799 struct dentry *default_mgmt_key;
803 /* must be last, dynamically sized area in this! */
804 struct ieee80211_vif vif;
808 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
810 return container_of(p, struct ieee80211_sub_if_data, vif);
813 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
814 __acquires(&sdata->wdev.mtx)
816 mutex_lock(&sdata->wdev.mtx);
817 __acquire(&sdata->wdev.mtx);
820 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
821 __releases(&sdata->wdev.mtx)
823 mutex_unlock(&sdata->wdev.mtx);
824 __release(&sdata->wdev.mtx);
827 #define sdata_dereference(p, sdata) \
828 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
831 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
833 lockdep_assert_held(&sdata->wdev.mtx);
836 static inline enum ieee80211_band
837 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
839 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
840 struct ieee80211_chanctx_conf *chanctx_conf;
843 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
844 if (!WARN_ON(!chanctx_conf))
845 band = chanctx_conf->def.chan->band;
852 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
854 switch (chandef->width) {
855 case NL80211_CHAN_WIDTH_5:
857 case NL80211_CHAN_WIDTH_10:
865 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
867 struct ieee80211_chanctx_conf *chanctx_conf;
871 chanctx_conf = rcu_dereference(vif->chanctx_conf);
873 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
879 enum sdata_queue_type {
880 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
881 IEEE80211_SDATA_QUEUE_AGG_START = 1,
882 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
886 IEEE80211_RX_MSG = 1,
887 IEEE80211_TX_STATUS_MSG = 2,
890 enum queue_stop_reason {
891 IEEE80211_QUEUE_STOP_REASON_DRIVER,
892 IEEE80211_QUEUE_STOP_REASON_PS,
893 IEEE80211_QUEUE_STOP_REASON_CSA,
894 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
895 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
896 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
897 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
898 IEEE80211_QUEUE_STOP_REASON_FLUSH,
901 #ifdef CONFIG_MAC80211_LEDS
902 struct tpt_led_trigger {
903 struct led_trigger trig;
905 const struct ieee80211_tpt_blink *blink_table;
906 unsigned int blink_table_len;
907 struct timer_list timer;
908 unsigned long prev_traffic;
909 unsigned long tx_bytes, rx_bytes;
910 unsigned int active, want;
916 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
918 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
919 * certain latency range (in Milliseconds). Each station that uses these
920 * ranges will have bins to count the amount of frames received in that range.
921 * The user can configure the ranges via debugfs.
922 * If ranges is NULL then Tx latency statistics bins are disabled for all
925 * @n_ranges: number of ranges that are taken in account
926 * @ranges: the ranges that the user requested or NULL if disabled.
928 struct ieee80211_tx_latency_bin_ranges {
934 * mac80211 scan flags - currently active scan mode
936 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
937 * well be on the operating channel
938 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
939 * determine if we are on the operating channel or not
940 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
941 * channel. This should not interrupt normal traffic.
942 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
943 * that the scan completed.
944 * @SCAN_ABORTED: Set for our scan work function when the driver reported
945 * a scan complete for an aborted scan.
946 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
952 SCAN_ONCHANNEL_SCANNING,
959 * enum mac80211_scan_state - scan state machine states
961 * @SCAN_DECISION: Main entry point to the scan state machine, this state
962 * determines if we should keep on scanning or switch back to the
964 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
965 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
966 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
968 * @SCAN_RESUME: Resume the scan and scan the next channel
969 * @SCAN_ABORT: Abort the scan and go back to operating channel
971 enum mac80211_scan_state {
980 struct ieee80211_local {
981 /* embed the driver visible part.
982 * don't cast (use the static inlines below), but we keep
983 * it first anyway so they become a no-op */
984 struct ieee80211_hw hw;
986 const struct ieee80211_ops *ops;
989 * private workqueue to mac80211. mac80211 makes this accessible
990 * via ieee80211_queue_work()
992 struct workqueue_struct *workqueue;
994 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
995 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
996 spinlock_t queue_stop_reason_lock;
999 int monitors, cooked_mntrs;
1000 /* number of interfaces with corresponding FIF_ flags */
1001 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1004 unsigned int filter_flags; /* FIF_* */
1006 bool wiphy_ciphers_allocated;
1010 /* protects the aggregated multicast list and filter calls */
1011 spinlock_t filter_lock;
1013 /* used for uploading changed mc list */
1014 struct work_struct reconfig_filter;
1016 /* aggregated multicast list */
1017 struct netdev_hw_addr_list mc_list;
1019 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1022 * suspended is true if we finished all the suspend _and_ we have
1023 * not yet come up from resume. This is to be used by mac80211
1024 * to ensure driver sanity during suspend and mac80211's own
1025 * sanity. It can eventually be used for WoW as well.
1030 * Resuming is true while suspended, but when we're reprogramming the
1031 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1032 * again even though some other parts of the stack are still suspended
1033 * and we still drop received frames to avoid waking the stack.
1038 * quiescing is true during the suspend process _only_ to
1039 * ease timer cancelling etc.
1043 /* device is started */
1046 /* device is during a HW reconfig */
1049 /* wowlan is enabled -- don't reconfig on resume */
1052 /* DFS/radar detection is enabled */
1053 bool radar_detect_enabled;
1054 struct work_struct radar_detected_work;
1056 /* number of RX chains the hardware has */
1059 int tx_headroom; /* required headroom for hardware/radiotap */
1061 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1062 * added to skb_queue will be processed, but frames in
1063 * skb_queue_unreliable may be dropped if the total length of these
1064 * queues increases over the limit. */
1065 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1066 struct tasklet_struct tasklet;
1067 struct sk_buff_head skb_queue;
1068 struct sk_buff_head skb_queue_unreliable;
1070 spinlock_t rx_path_lock;
1074 * The mutex only protects the list, hash table and
1075 * counter, reads are done with RCU.
1077 struct mutex sta_mtx;
1078 spinlock_t tim_lock;
1079 unsigned long num_sta;
1080 struct list_head sta_list;
1081 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1082 struct timer_list sta_cleanup;
1086 * Tx latency statistics parameters for all stations.
1087 * Can enable via debugfs (NULL when disabled).
1089 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1091 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1092 struct tasklet_struct tx_pending_tasklet;
1094 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1096 /* number of interfaces with corresponding IFF_ flags */
1097 atomic_t iff_allmultis, iff_promiscs;
1099 struct rate_control_ref *rate_ctrl;
1101 struct crypto_cipher *wep_tx_tfm;
1102 struct crypto_cipher *wep_rx_tfm;
1106 struct list_head interfaces;
1107 struct mutex iflist_mtx;
1110 * Key mutex, protects sdata's key_list and sta_info's
1111 * key pointers (write access, they're RCU.)
1113 struct mutex key_mtx;
1115 /* mutex for scan and work locking */
1118 /* Scanning and BSS list */
1119 unsigned long scanning;
1120 struct cfg80211_ssid scan_ssid;
1121 struct cfg80211_scan_request *int_scan_req;
1122 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1123 struct cfg80211_chan_def scan_chandef;
1124 enum ieee80211_band hw_scan_band;
1125 int scan_channel_idx;
1127 int hw_scan_ies_bufsize;
1129 struct work_struct sched_scan_stopped_work;
1130 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1131 struct cfg80211_sched_scan_request *sched_scan_req;
1133 unsigned long leave_oper_channel_time;
1134 enum mac80211_scan_state next_scan_state;
1135 struct delayed_work scan_work;
1136 struct ieee80211_sub_if_data __rcu *scan_sdata;
1137 /* For backward compatibility only -- do not use */
1138 struct cfg80211_chan_def _oper_chandef;
1140 /* Temporary remain-on-channel for off-channel operations */
1141 struct ieee80211_channel *tmp_channel;
1143 /* channel contexts */
1144 struct list_head chanctx_list;
1145 struct mutex chanctx_mtx;
1148 /* dot11CountersTable */
1149 u32 dot11TransmittedFragmentCount;
1150 u32 dot11MulticastTransmittedFrameCount;
1151 u32 dot11FailedCount;
1152 u32 dot11RetryCount;
1153 u32 dot11MultipleRetryCount;
1154 u32 dot11FrameDuplicateCount;
1155 u32 dot11ReceivedFragmentCount;
1156 u32 dot11MulticastReceivedFrameCount;
1157 u32 dot11TransmittedFrameCount;
1159 #ifdef CONFIG_MAC80211_LEDS
1160 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1161 struct tpt_led_trigger *tpt_led_trigger;
1162 char tx_led_name[32], rx_led_name[32],
1163 assoc_led_name[32], radio_led_name[32];
1166 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1167 /* TX/RX handler statistics */
1168 unsigned int tx_handlers_drop;
1169 unsigned int tx_handlers_queued;
1170 unsigned int tx_handlers_drop_unencrypted;
1171 unsigned int tx_handlers_drop_fragment;
1172 unsigned int tx_handlers_drop_wep;
1173 unsigned int tx_handlers_drop_not_assoc;
1174 unsigned int tx_handlers_drop_unauth_port;
1175 unsigned int rx_handlers_drop;
1176 unsigned int rx_handlers_queued;
1177 unsigned int rx_handlers_drop_nullfunc;
1178 unsigned int rx_handlers_drop_defrag;
1179 unsigned int rx_handlers_drop_short;
1180 unsigned int tx_expand_skb_head;
1181 unsigned int tx_expand_skb_head_cloned;
1182 unsigned int rx_expand_skb_head;
1183 unsigned int rx_expand_skb_head2;
1184 unsigned int rx_handlers_fragments;
1185 unsigned int tx_status_drop;
1186 #define I802_DEBUG_INC(c) (c)++
1187 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1188 #define I802_DEBUG_INC(c) do { } while (0)
1189 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1192 int total_ps_buffered; /* total number of all buffered unicast and
1193 * multicast packets for power saving stations
1197 bool offchannel_ps_enabled;
1199 * PS can only be enabled when we have exactly one managed
1200 * interface (and monitors) in PS, this then points there.
1202 struct ieee80211_sub_if_data *ps_sdata;
1203 struct work_struct dynamic_ps_enable_work;
1204 struct work_struct dynamic_ps_disable_work;
1205 struct timer_list dynamic_ps_timer;
1206 struct notifier_block network_latency_notifier;
1207 struct notifier_block ifa_notifier;
1208 struct notifier_block ifa6_notifier;
1211 * The dynamic ps timeout configured from user space via WEXT -
1212 * this will override whatever chosen by mac80211 internally.
1214 int dynamic_ps_forced_timeout;
1216 int user_power_level; /* in dBm, for all interfaces */
1218 enum ieee80211_smps_mode smps_mode;
1220 struct work_struct restart_work;
1222 #ifdef CONFIG_MAC80211_DEBUGFS
1223 struct local_debugfsdentries {
1224 struct dentry *rcdir;
1225 struct dentry *keys;
1230 * Remain-on-channel support
1232 struct list_head roc_list;
1233 struct work_struct hw_roc_start, hw_roc_done;
1234 unsigned long hw_roc_start_time;
1235 u64 roc_cookie_counter;
1237 struct idr ack_status_frames;
1238 spinlock_t ack_status_lock;
1240 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1242 /* virtual monitor interface */
1243 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1244 struct cfg80211_chan_def monitor_chandef;
1247 static inline struct ieee80211_sub_if_data *
1248 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1250 return netdev_priv(dev);
1253 static inline struct ieee80211_sub_if_data *
1254 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1256 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1259 /* this struct represents 802.11n's RA/TID combination */
1260 struct ieee80211_ra_tid {
1265 /* this struct holds the value parsing from channel switch IE */
1266 struct ieee80211_csa_ie {
1267 struct cfg80211_chan_def chandef;
1274 /* Parsed Information Elements */
1275 struct ieee802_11_elems {
1279 /* pointers to IEs */
1281 const u8 *supp_rates;
1282 const u8 *ds_params;
1283 const struct ieee80211_tim_ie *tim;
1284 const u8 *challenge;
1287 const u8 *ext_supp_rates;
1289 const u8 *wmm_param;
1290 const struct ieee80211_ht_cap *ht_cap_elem;
1291 const struct ieee80211_ht_operation *ht_operation;
1292 const struct ieee80211_vht_cap *vht_cap_elem;
1293 const struct ieee80211_vht_operation *vht_operation;
1294 const struct ieee80211_meshconf_ie *mesh_config;
1297 const __le16 *awake_window;
1301 const struct ieee80211_rann_ie *rann;
1302 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1303 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1304 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1305 const u8 *country_elem;
1306 const u8 *pwr_constr_elem;
1307 const struct ieee80211_timeout_interval_ie *timeout_int;
1308 const u8 *opmode_notif;
1309 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1310 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1312 /* length of them, respectively */
1318 u8 ext_supp_rates_len;
1326 u8 country_elem_len;
1328 /* whether a parse error occurred while retrieving these elements */
1332 static inline struct ieee80211_local *hw_to_local(
1333 struct ieee80211_hw *hw)
1335 return container_of(hw, struct ieee80211_local, hw);
1339 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1341 return ether_addr_equal(raddr, addr) ||
1342 is_broadcast_ether_addr(raddr);
1346 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1348 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1349 status->flag & RX_FLAG_MACTIME_END);
1350 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1353 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1354 struct ieee80211_rx_status *status,
1355 unsigned int mpdu_len,
1356 unsigned int mpdu_offset);
1357 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1358 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1359 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1361 void ieee80211_configure_filter(struct ieee80211_local *local);
1362 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1365 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1366 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1367 struct cfg80211_auth_request *req);
1368 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1369 struct cfg80211_assoc_request *req);
1370 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1371 struct cfg80211_deauth_request *req);
1372 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1373 struct cfg80211_disassoc_request *req);
1374 void ieee80211_send_pspoll(struct ieee80211_local *local,
1375 struct ieee80211_sub_if_data *sdata);
1376 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1377 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1378 int ieee80211_max_network_latency(struct notifier_block *nb,
1379 unsigned long data, void *dummy);
1380 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1381 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1382 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1383 struct sk_buff *skb);
1384 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1385 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1386 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1387 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1388 __le16 fc, bool acked);
1389 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1390 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1393 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1394 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1395 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1396 const u8 *bssid, const u8 *addr, u32 supp_rates);
1397 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1398 struct cfg80211_ibss_params *params);
1399 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1400 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1401 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1402 struct sk_buff *skb);
1403 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1404 struct cfg80211_csa_settings *csa_settings);
1405 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1406 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1409 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1410 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1411 struct sk_buff *skb);
1412 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1413 struct cfg80211_csa_settings *csa_settings,
1415 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1417 /* scan/BSS handling */
1418 void ieee80211_scan_work(struct work_struct *work);
1419 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1420 const u8 *ssid, u8 ssid_len,
1421 struct ieee80211_channel *chan,
1422 enum nl80211_bss_scan_width scan_width);
1423 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1424 struct cfg80211_scan_request *req);
1425 void ieee80211_scan_cancel(struct ieee80211_local *local);
1426 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1427 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1429 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1430 struct ieee80211_bss *
1431 ieee80211_bss_info_update(struct ieee80211_local *local,
1432 struct ieee80211_rx_status *rx_status,
1433 struct ieee80211_mgmt *mgmt,
1435 struct ieee802_11_elems *elems,
1436 struct ieee80211_channel *channel);
1437 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1438 struct ieee80211_bss *bss);
1440 /* scheduled scan handling */
1442 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1443 struct cfg80211_sched_scan_request *req);
1444 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1445 struct cfg80211_sched_scan_request *req);
1446 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1447 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1449 /* off-channel helpers */
1450 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1451 void ieee80211_offchannel_return(struct ieee80211_local *local);
1452 void ieee80211_roc_setup(struct ieee80211_local *local);
1453 void ieee80211_start_next_roc(struct ieee80211_local *local);
1454 void ieee80211_roc_purge(struct ieee80211_local *local,
1455 struct ieee80211_sub_if_data *sdata);
1456 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1457 void ieee80211_sw_roc_work(struct work_struct *work);
1458 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1460 /* channel switch handling */
1461 void ieee80211_csa_finalize_work(struct work_struct *work);
1462 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1463 struct cfg80211_csa_settings *params);
1465 /* interface handling */
1466 int ieee80211_iface_init(void);
1467 void ieee80211_iface_exit(void);
1468 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1469 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1470 struct vif_params *params);
1471 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1472 enum nl80211_iftype type);
1473 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1474 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1475 u32 ieee80211_idle_off(struct ieee80211_local *local);
1476 void ieee80211_recalc_idle(struct ieee80211_local *local);
1477 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1479 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1480 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1481 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1482 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1484 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1485 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1487 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1489 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1493 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1494 void ieee80211_tx_pending(unsigned long data);
1495 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1496 struct net_device *dev);
1497 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1498 struct net_device *dev);
1499 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1500 struct sk_buff_head *skbs);
1503 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1504 struct ieee80211_sta_ht_cap *ht_cap);
1505 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1506 struct ieee80211_supported_band *sband,
1507 const struct ieee80211_ht_cap *ht_cap_ie,
1508 struct sta_info *sta);
1509 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1510 const u8 *da, u16 tid,
1511 u16 initiator, u16 reason_code);
1512 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1513 enum ieee80211_smps_mode smps, const u8 *da,
1515 void ieee80211_request_smps_ap_work(struct work_struct *work);
1516 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1517 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1518 enum ieee80211_smps_mode smps_mode_new);
1520 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1521 u16 initiator, u16 reason, bool stop);
1522 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1523 u16 initiator, u16 reason, bool stop);
1524 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1525 enum ieee80211_agg_stop_reason reason);
1526 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1527 struct sta_info *sta,
1528 struct ieee80211_mgmt *mgmt, size_t len);
1529 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1530 struct sta_info *sta,
1531 struct ieee80211_mgmt *mgmt,
1533 void ieee80211_process_addba_request(struct ieee80211_local *local,
1534 struct sta_info *sta,
1535 struct ieee80211_mgmt *mgmt,
1538 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1539 enum ieee80211_agg_stop_reason reason);
1540 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1541 enum ieee80211_agg_stop_reason reason);
1542 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1543 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1544 void ieee80211_ba_session_work(struct work_struct *work);
1545 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1546 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1548 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1552 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1553 struct ieee80211_supported_band *sband,
1554 const struct ieee80211_vht_cap *vht_cap_ie,
1555 struct sta_info *sta);
1556 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1557 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1558 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1559 struct sta_info *sta, u8 opmode,
1560 enum ieee80211_band band, bool nss_only);
1561 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1562 struct ieee80211_sta_vht_cap *vht_cap);
1564 /* Spectrum management */
1565 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1566 struct ieee80211_mgmt *mgmt,
1569 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1570 * @sdata: the sdata of the interface which has received the frame
1571 * @elems: parsed 802.11 elements received with the frame
1572 * @current_band: indicates the current band
1573 * @sta_flags: contains information about own capabilities and restrictions
1574 * to decide which channel switch announcements can be accepted. Only the
1575 * following subset of &enum ieee80211_sta_flags are evaluated:
1576 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1577 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1578 * %IEEE80211_STA_DISABLE_160MHZ.
1579 * @bssid: the currently connected bssid (for reporting)
1580 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1581 All of them will be filled with if success only.
1582 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1584 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1585 struct ieee802_11_elems *elems,
1586 enum ieee80211_band current_band,
1587 u32 sta_flags, u8 *bssid,
1588 struct ieee80211_csa_ie *csa_ie);
1590 /* Suspend/resume and hw reconfiguration */
1591 int ieee80211_reconfig(struct ieee80211_local *local);
1592 void ieee80211_stop_device(struct ieee80211_local *local);
1594 int __ieee80211_suspend(struct ieee80211_hw *hw,
1595 struct cfg80211_wowlan *wowlan);
1597 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1599 struct ieee80211_local *local = hw_to_local(hw);
1601 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1602 "%s: resume with hardware scan still in progress\n",
1603 wiphy_name(hw->wiphy));
1605 return ieee80211_reconfig(hw_to_local(hw));
1608 /* utility functions/constants */
1609 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1610 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1611 enum nl80211_iftype type);
1612 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1613 int rate, int erp, int short_preamble,
1615 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1616 struct ieee80211_hdr *hdr, const u8 *tsc,
1618 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1620 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1621 enum ieee80211_band band);
1623 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1624 struct sk_buff *skb, int tid,
1625 enum ieee80211_band band);
1628 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1629 struct sk_buff *skb, int tid,
1630 enum ieee80211_band band)
1633 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1637 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1638 struct sk_buff *skb, int tid)
1640 struct ieee80211_chanctx_conf *chanctx_conf;
1643 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1644 if (WARN_ON(!chanctx_conf)) {
1650 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1651 chanctx_conf->def.chan->band);
1655 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1656 struct sk_buff *skb)
1658 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1659 ieee80211_tx_skb_tid(sdata, skb, 7);
1662 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1663 struct ieee802_11_elems *elems,
1664 u64 filter, u32 crc);
1665 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1667 struct ieee802_11_elems *elems)
1669 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1672 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1673 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1674 void ieee80211_dynamic_ps_timer(unsigned long data);
1675 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1676 struct ieee80211_sub_if_data *sdata,
1678 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1679 struct ieee80211_hdr *hdr);
1680 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1681 struct ieee80211_hdr *hdr, bool ack);
1683 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1684 unsigned long queues,
1685 enum queue_stop_reason reason);
1686 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1687 unsigned long queues,
1688 enum queue_stop_reason reason);
1689 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1690 enum queue_stop_reason reason);
1691 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1692 enum queue_stop_reason reason);
1693 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1694 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1695 struct sk_buff *skb);
1696 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1697 struct sk_buff_head *skbs);
1698 void ieee80211_flush_queues(struct ieee80211_local *local,
1699 struct ieee80211_sub_if_data *sdata);
1701 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1702 u16 transaction, u16 auth_alg, u16 status,
1703 const u8 *extra, size_t extra_len, const u8 *bssid,
1704 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1706 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1707 const u8 *bssid, u16 stype, u16 reason,
1708 bool send_frame, u8 *frame_buf);
1709 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1710 size_t buffer_len, const u8 *ie, size_t ie_len,
1711 enum ieee80211_band band, u32 rate_mask,
1712 struct cfg80211_chan_def *chandef);
1713 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1714 u8 *dst, u32 ratemask,
1715 struct ieee80211_channel *chan,
1716 const u8 *ssid, size_t ssid_len,
1717 const u8 *ie, size_t ie_len,
1719 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1720 const u8 *ssid, size_t ssid_len,
1721 const u8 *ie, size_t ie_len,
1722 u32 ratemask, bool directed, u32 tx_flags,
1723 struct ieee80211_channel *channel, bool scan);
1725 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1726 struct ieee802_11_elems *elems,
1727 enum ieee80211_band band, u32 *basic_rates);
1728 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1729 enum ieee80211_smps_mode smps_mode);
1730 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1731 enum ieee80211_smps_mode smps_mode);
1732 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1733 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1735 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1736 const u8 *ids, int n_ids, size_t offset);
1737 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1738 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1740 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1741 const struct cfg80211_chan_def *chandef,
1743 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1745 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1746 const struct ieee80211_supported_band *sband,
1747 const u8 *srates, int srates_len, u32 *rates);
1748 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1749 struct sk_buff *skb, bool need_basic,
1750 enum ieee80211_band band);
1751 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1752 struct sk_buff *skb, bool need_basic,
1753 enum ieee80211_band band);
1755 /* channel management */
1756 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1757 const struct ieee80211_ht_operation *ht_oper,
1758 struct cfg80211_chan_def *chandef);
1759 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1762 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1763 const struct cfg80211_chan_def *chandef,
1764 enum ieee80211_chanctx_mode mode);
1766 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1767 const struct cfg80211_chan_def *chandef,
1769 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1771 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1773 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1774 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1775 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1778 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1779 struct ieee80211_chanctx *chanctx);
1780 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1781 struct ieee80211_chanctx *ctx);
1783 void ieee80211_dfs_cac_timer(unsigned long data);
1784 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1785 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1786 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1787 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1788 struct cfg80211_csa_settings *csa_settings);
1790 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1791 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1792 const struct ieee80211_cipher_scheme *
1793 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1794 enum nl80211_iftype iftype);
1795 int ieee80211_cs_headroom(struct ieee80211_local *local,
1796 struct cfg80211_crypto_settings *crypto,
1797 enum nl80211_iftype iftype);
1798 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1799 struct ieee80211_sub_if_data *sdata);
1801 #ifdef CONFIG_MAC80211_NOINLINE
1802 #define debug_noinline noinline
1804 #define debug_noinline
1807 #endif /* IEEE80211_I_H */