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.
232 struct ieee80211_csa_settings {
233 const u16 *counter_offsets_beacon;
234 const u16 *counter_offsets_presp;
236 int n_counter_offsets_beacon;
237 int n_counter_offsets_presp;
244 int head_len, tail_len;
245 struct ieee80211_meshconf_ie *meshconf;
246 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
247 u8 csa_current_counter;
248 struct rcu_head rcu_head;
252 struct rcu_head rcu_head;
254 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
259 /* yes, this looks ugly, but guarantees that we can later use
261 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
262 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
263 __aligned(__alignof__(unsigned long));
264 struct sk_buff_head bc_buf;
265 atomic_t num_sta_ps; /* number of stations in PS mode */
270 struct ieee80211_if_ap {
271 struct beacon_data __rcu *beacon;
272 struct probe_resp __rcu *probe_resp;
274 /* to be used after channel switch. */
275 struct cfg80211_beacon_data *next_beacon;
276 struct list_head vlans; /* write-protected with RTNL and local->mtx */
279 atomic_t num_mcast_sta; /* number of stations receiving multicast */
280 enum ieee80211_smps_mode req_smps, /* requested smps mode */
281 driver_smps_mode; /* smps mode request */
283 struct work_struct request_smps_work;
286 struct ieee80211_if_wds {
287 struct sta_info *sta;
288 u8 remote_addr[ETH_ALEN];
291 struct ieee80211_if_vlan {
292 struct list_head list; /* write-protected with RTNL and local->mtx */
294 /* used for all tx if the VLAN is configured to 4-addr mode */
295 struct sta_info __rcu *sta;
299 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
300 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
301 __u32 fwded_frames; /* Mesh total forwarded frames */
302 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
303 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
304 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
307 #define PREQ_Q_F_START 0x1
308 #define PREQ_Q_F_REFRESH 0x2
309 struct mesh_preq_queue {
310 struct list_head list;
316 #define IEEE80211_ROC_MIN_LEFT 1
318 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
321 struct ieee80211_roc_work {
322 struct list_head list;
323 struct list_head dependents;
325 struct delayed_work work;
327 struct ieee80211_sub_if_data *sdata;
329 struct ieee80211_channel *chan;
331 bool started, abort, hw_begun, notified;
335 unsigned long hw_start_time;
337 u32 duration, req_duration;
338 struct sk_buff *frame;
339 u64 cookie, mgmt_tx_cookie;
340 enum ieee80211_roc_type type;
343 /* flags used in struct ieee80211_if_managed.flags */
344 enum ieee80211_sta_flags {
345 IEEE80211_STA_CONNECTION_POLL = BIT(1),
346 IEEE80211_STA_CONTROL_PORT = BIT(2),
347 IEEE80211_STA_DISABLE_HT = BIT(4),
348 IEEE80211_STA_CSA_RECEIVED = BIT(5),
349 IEEE80211_STA_MFP_ENABLED = BIT(6),
350 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
351 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
352 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
353 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
354 IEEE80211_STA_DISABLE_VHT = BIT(11),
355 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
356 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
357 IEEE80211_STA_DISABLE_WMM = BIT(14),
360 struct ieee80211_mgd_auth_data {
361 struct cfg80211_bss *bss;
362 unsigned long timeout;
364 u16 algorithm, expected_transaction;
366 u8 key[WLAN_KEY_LEN_WEP104];
369 bool timeout_started;
371 u16 sae_trans, sae_status;
376 struct ieee80211_mgd_assoc_data {
377 struct cfg80211_bss *bss;
378 const u8 *supp_rates;
380 unsigned long timeout;
384 u8 prev_bssid[ETH_ALEN];
385 u8 ssid[IEEE80211_MAX_SSID_LEN];
391 bool timeout_started;
395 struct ieee80211_vht_cap ap_vht_cap;
401 struct ieee80211_if_managed {
402 struct timer_list timer;
403 struct timer_list conn_mon_timer;
404 struct timer_list bcn_mon_timer;
405 struct timer_list chswitch_timer;
406 struct work_struct monitor_work;
407 struct work_struct chswitch_work;
408 struct work_struct beacon_connection_loss_work;
409 struct work_struct csa_connection_drop_work;
411 unsigned long beacon_timeout;
412 unsigned long probe_timeout;
413 int probe_send_count;
414 bool nullfunc_failed;
415 bool connection_loss;
417 struct cfg80211_bss *associated;
418 struct ieee80211_mgd_auth_data *auth_data;
419 struct ieee80211_mgd_assoc_data *assoc_data;
425 bool powersave; /* powersave requested for this iface */
426 bool broken_ap; /* AP is broken -- turn off powersave */
429 enum ieee80211_smps_mode req_smps, /* requested smps mode */
430 driver_smps_mode; /* smps mode request */
432 struct work_struct request_smps_work;
436 bool beacon_crc_valid;
440 bool status_received;
444 IEEE80211_MFP_DISABLED,
445 IEEE80211_MFP_OPTIONAL,
446 IEEE80211_MFP_REQUIRED
447 } mfp; /* management frame protection */
450 * Bitmask of enabled u-apsd queues,
451 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
454 unsigned int uapsd_queues;
457 * Maximum number of buffered frames AP can deliver during a
458 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
459 * Needs a new association to take effect.
461 unsigned int uapsd_max_sp_len;
463 int wmm_last_param_set;
469 /* Signal strength from the last Beacon frame in the current BSS. */
470 int last_beacon_signal;
473 * Weighted average of the signal strength from Beacon frames in the
474 * current BSS. This is in units of 1/16 of the signal unit to maintain
475 * accuracy and to speed up calculations, i.e., the value need to be
476 * divided by 16 to get the actual value.
478 int ave_beacon_signal;
481 * Number of Beacon frames used in ave_beacon_signal. This can be used
482 * to avoid generating less reliable cqm events that would be based
483 * only on couple of received frames.
485 unsigned int count_beacon_signal;
488 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
489 * that triggered a cqm event. 0 indicates that no event has been
490 * generated for the current association.
492 int last_cqm_event_signal;
495 * State variables for keeping track of RSSI of the AP currently
496 * connected to and informing driver when RSSI has gone
497 * below/above a certain threshold.
499 int rssi_min_thold, rssi_max_thold;
500 int last_ave_beacon_signal;
502 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
503 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
504 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
505 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
508 struct ieee80211_if_ibss {
509 struct timer_list timer;
510 struct work_struct csa_connection_drop_work;
512 unsigned long last_scan_completed;
521 bool userspace_handles_dfs;
523 u8 bssid[ETH_ALEN] __aligned(2);
524 u8 ssid[IEEE80211_MAX_SSID_LEN];
527 struct cfg80211_chan_def chandef;
529 unsigned long ibss_join_req;
530 /* probe response/beacon for IBSS */
531 struct beacon_data __rcu *presp;
533 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
534 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
536 spinlock_t incomplete_lock;
537 struct list_head incomplete_stations;
540 IEEE80211_IBSS_MLME_SEARCH,
541 IEEE80211_IBSS_MLME_JOINED,
546 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
548 * these declarations define the interface, which enables
549 * vendor-specific mesh synchronization
552 struct ieee802_11_elems;
553 struct ieee80211_mesh_sync_ops {
554 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
556 struct ieee80211_mgmt *mgmt,
557 struct ieee802_11_elems *elems,
558 struct ieee80211_rx_status *rx_status);
560 /* should be called with beacon_data under RCU read lock */
561 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
562 struct beacon_data *beacon);
563 /* add other framework functions here */
566 struct mesh_csa_settings {
567 struct rcu_head rcu_head;
568 struct cfg80211_csa_settings settings;
571 struct ieee80211_if_mesh {
572 struct timer_list housekeeping_timer;
573 struct timer_list mesh_path_timer;
574 struct timer_list mesh_path_root_timer;
576 unsigned long wrkq_flags;
577 unsigned long mbss_changed;
579 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
581 /* Active Path Selection Protocol Identifier */
583 /* Active Path Selection Metric Identifier */
585 /* Congestion Control Mode Identifier */
587 /* Synchronization Protocol Identifier */
589 /* Authentication Protocol Identifier */
591 /* Local mesh Sequence Number */
593 /* Last used PREQ ID */
596 /* Timestamp of last SN update */
597 unsigned long last_sn_update;
598 /* Time when it's ok to send next PERR */
599 unsigned long next_perr;
600 /* Timestamp of last PREQ sent */
601 unsigned long last_preq;
602 struct mesh_rmc *rmc;
603 spinlock_t mesh_preq_queue_lock;
604 struct mesh_preq_queue preq_queue;
606 struct mesh_stats mshstats;
607 struct mesh_config mshcfg;
608 atomic_t estab_plinks;
610 bool accepting_plinks;
612 struct beacon_data __rcu *beacon;
616 IEEE80211_MESH_SEC_NONE = 0x0,
617 IEEE80211_MESH_SEC_AUTHED = 0x1,
618 IEEE80211_MESH_SEC_SECURED = 0x2,
621 /* Extensible Synchronization Framework */
622 const struct ieee80211_mesh_sync_ops *sync_ops;
623 s64 sync_offset_clockdrift_max;
624 spinlock_t sync_offset_lock;
626 /* mesh power save */
627 enum nl80211_mesh_power_mode nonpeer_pm;
628 int ps_peers_light_sleep;
629 int ps_peers_deep_sleep;
631 /* Channel Switching Support */
632 struct mesh_csa_settings __rcu *csa;
634 IEEE80211_MESH_CSA_ROLE_NONE,
635 IEEE80211_MESH_CSA_ROLE_INIT,
636 IEEE80211_MESH_CSA_ROLE_REPEATER,
641 /* offset from skb->data while building IE */
645 #ifdef CONFIG_MAC80211_MESH
646 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
647 do { (msh)->mshstats.name++; } while (0)
649 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
654 * enum ieee80211_sub_if_data_flags - virtual interface flags
656 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
657 * @IEEE80211_SDATA_PROMISC: interface is promisc
658 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
659 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
660 * associated stations and deliver multicast frames both
661 * back to wireless media and to the local net stack.
662 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
663 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
665 enum ieee80211_sub_if_data_flags {
666 IEEE80211_SDATA_ALLMULTI = BIT(0),
667 IEEE80211_SDATA_PROMISC = BIT(1),
668 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
669 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
670 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
671 IEEE80211_SDATA_IN_DRIVER = BIT(5),
675 * enum ieee80211_sdata_state_bits - virtual interface state bits
676 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
677 * mirrors netif_running() but is separate for interface type
678 * change handling while the interface is up
679 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
680 * mode, so queues are stopped
681 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
682 * to offchannel, reset when offchannel returns
684 enum ieee80211_sdata_state_bits {
686 SDATA_STATE_OFFCHANNEL,
687 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
691 * enum ieee80211_chanctx_mode - channel context configuration mode
693 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
694 * multiple interfaces
695 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
696 * only by a single interface. This can be used for example for
697 * non-fixed channel IBSS.
699 enum ieee80211_chanctx_mode {
700 IEEE80211_CHANCTX_SHARED,
701 IEEE80211_CHANCTX_EXCLUSIVE
704 struct ieee80211_chanctx {
705 struct list_head list;
706 struct rcu_head rcu_head;
708 struct list_head assigned_vifs;
709 struct list_head reserved_vifs;
711 enum ieee80211_chanctx_mode mode;
714 struct ieee80211_chanctx_conf conf;
717 struct mac80211_qos_map {
718 struct cfg80211_qos_map qos_map;
719 struct rcu_head rcu_head;
722 struct ieee80211_sub_if_data {
723 struct list_head list;
725 struct wireless_dev wdev;
728 struct list_head key_list;
730 /* count for keys needing tailroom space allocation */
731 int crypto_tx_tailroom_needed_cnt;
732 int crypto_tx_tailroom_pending_dec;
733 struct delayed_work dec_tailroom_needed_wk;
735 struct net_device *dev;
736 struct ieee80211_local *local;
742 int drop_unencrypted;
746 /* Fragment table for host-based reassembly */
747 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
748 unsigned int fragment_next;
750 /* TID bitmap for NoAck policy */
753 /* bit field of ACM bits (BIT(802.1D tag)) */
756 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
757 struct ieee80211_key __rcu *default_unicast_key;
758 struct ieee80211_key __rcu *default_multicast_key;
759 struct ieee80211_key __rcu *default_mgmt_key;
762 __be16 control_port_protocol;
763 bool control_port_no_encrypt;
764 int encrypt_headroom;
766 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
767 struct mac80211_qos_map __rcu *qos_map;
769 struct work_struct csa_finalize_work;
770 bool csa_radar_required;
771 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
772 struct cfg80211_chan_def csa_chandef;
774 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
775 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
777 /* context reservation -- protected with chanctx_mtx */
778 struct ieee80211_chanctx *reserved_chanctx;
779 struct cfg80211_chan_def reserved_chandef;
780 bool reserved_radar_required;
782 /* used to reconfigure hardware SM PS */
783 struct work_struct recalc_smps;
785 struct work_struct work;
786 struct sk_buff_head skb_queue;
789 enum ieee80211_smps_mode smps_mode;
791 int user_power_level; /* in dBm */
792 int ap_power_level; /* in dBm */
795 struct delayed_work dfs_cac_timer_work;
797 u8 tdls_peer[ETH_ALEN] __aligned(2);
798 struct delayed_work tdls_peer_del_work;
801 * AP this belongs to: self in AP mode and
802 * corresponding AP in VLAN mode, NULL for
803 * all others (might be needed later in IBSS)
805 struct ieee80211_if_ap *bss;
807 /* bitmap of allowed (non-MCS) rate indexes for rate control */
808 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
810 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
811 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
814 struct ieee80211_if_ap ap;
815 struct ieee80211_if_wds wds;
816 struct ieee80211_if_vlan vlan;
817 struct ieee80211_if_managed mgd;
818 struct ieee80211_if_ibss ibss;
819 struct ieee80211_if_mesh mesh;
823 #ifdef CONFIG_MAC80211_DEBUGFS
825 struct dentry *subdir_stations;
826 struct dentry *default_unicast_key;
827 struct dentry *default_multicast_key;
828 struct dentry *default_mgmt_key;
832 /* must be last, dynamically sized area in this! */
833 struct ieee80211_vif vif;
837 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
839 return container_of(p, struct ieee80211_sub_if_data, vif);
842 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
843 __acquires(&sdata->wdev.mtx)
845 mutex_lock(&sdata->wdev.mtx);
846 __acquire(&sdata->wdev.mtx);
849 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
850 __releases(&sdata->wdev.mtx)
852 mutex_unlock(&sdata->wdev.mtx);
853 __release(&sdata->wdev.mtx);
856 #define sdata_dereference(p, sdata) \
857 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
860 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
862 lockdep_assert_held(&sdata->wdev.mtx);
865 static inline enum ieee80211_band
866 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
868 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
869 struct ieee80211_chanctx_conf *chanctx_conf;
872 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
873 if (!WARN_ON(!chanctx_conf))
874 band = chanctx_conf->def.chan->band;
881 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
883 switch (chandef->width) {
884 case NL80211_CHAN_WIDTH_5:
886 case NL80211_CHAN_WIDTH_10:
894 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
896 struct ieee80211_chanctx_conf *chanctx_conf;
900 chanctx_conf = rcu_dereference(vif->chanctx_conf);
902 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
908 enum sdata_queue_type {
909 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
910 IEEE80211_SDATA_QUEUE_AGG_START = 1,
911 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
915 IEEE80211_RX_MSG = 1,
916 IEEE80211_TX_STATUS_MSG = 2,
919 enum queue_stop_reason {
920 IEEE80211_QUEUE_STOP_REASON_DRIVER,
921 IEEE80211_QUEUE_STOP_REASON_PS,
922 IEEE80211_QUEUE_STOP_REASON_CSA,
923 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
924 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
925 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
926 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
927 IEEE80211_QUEUE_STOP_REASON_FLUSH,
928 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
930 IEEE80211_QUEUE_STOP_REASONS,
933 #ifdef CONFIG_MAC80211_LEDS
934 struct tpt_led_trigger {
935 struct led_trigger trig;
937 const struct ieee80211_tpt_blink *blink_table;
938 unsigned int blink_table_len;
939 struct timer_list timer;
940 unsigned long prev_traffic;
941 unsigned long tx_bytes, rx_bytes;
942 unsigned int active, want;
948 * struct ieee80211_tx_latency_bin_ranges - Tx latency statistics bins ranges
950 * Measuring Tx latency statistics. Counts how many Tx frames transmitted in a
951 * certain latency range (in Milliseconds). Each station that uses these
952 * ranges will have bins to count the amount of frames received in that range.
953 * The user can configure the ranges via debugfs.
954 * If ranges is NULL then Tx latency statistics bins are disabled for all
957 * @n_ranges: number of ranges that are taken in account
958 * @ranges: the ranges that the user requested or NULL if disabled.
960 struct ieee80211_tx_latency_bin_ranges {
966 * mac80211 scan flags - currently active scan mode
968 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
969 * well be on the operating channel
970 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
971 * determine if we are on the operating channel or not
972 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
973 * channel. This should not interrupt normal traffic.
974 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
975 * that the scan completed.
976 * @SCAN_ABORTED: Set for our scan work function when the driver reported
977 * a scan complete for an aborted scan.
978 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
984 SCAN_ONCHANNEL_SCANNING,
991 * enum mac80211_scan_state - scan state machine states
993 * @SCAN_DECISION: Main entry point to the scan state machine, this state
994 * determines if we should keep on scanning or switch back to the
996 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
997 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
998 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1000 * @SCAN_RESUME: Resume the scan and scan the next channel
1001 * @SCAN_ABORT: Abort the scan and go back to operating channel
1003 enum mac80211_scan_state {
1012 struct ieee80211_local {
1013 /* embed the driver visible part.
1014 * don't cast (use the static inlines below), but we keep
1015 * it first anyway so they become a no-op */
1016 struct ieee80211_hw hw;
1018 const struct ieee80211_ops *ops;
1021 * private workqueue to mac80211. mac80211 makes this accessible
1022 * via ieee80211_queue_work()
1024 struct workqueue_struct *workqueue;
1026 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1027 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1028 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1029 spinlock_t queue_stop_reason_lock;
1032 int monitors, cooked_mntrs;
1033 /* number of interfaces with corresponding FIF_ flags */
1034 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1037 unsigned int filter_flags; /* FIF_* */
1039 bool wiphy_ciphers_allocated;
1043 /* protects the aggregated multicast list and filter calls */
1044 spinlock_t filter_lock;
1046 /* used for uploading changed mc list */
1047 struct work_struct reconfig_filter;
1049 /* aggregated multicast list */
1050 struct netdev_hw_addr_list mc_list;
1052 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1055 * suspended is true if we finished all the suspend _and_ we have
1056 * not yet come up from resume. This is to be used by mac80211
1057 * to ensure driver sanity during suspend and mac80211's own
1058 * sanity. It can eventually be used for WoW as well.
1063 * Resuming is true while suspended, but when we're reprogramming the
1064 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1065 * again even though some other parts of the stack are still suspended
1066 * and we still drop received frames to avoid waking the stack.
1071 * quiescing is true during the suspend process _only_ to
1072 * ease timer cancelling etc.
1076 /* device is started */
1079 /* device is during a HW reconfig */
1082 /* wowlan is enabled -- don't reconfig on resume */
1085 /* DFS/radar detection is enabled */
1086 bool radar_detect_enabled;
1087 struct work_struct radar_detected_work;
1089 /* number of RX chains the hardware has */
1092 int tx_headroom; /* required headroom for hardware/radiotap */
1094 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1095 * added to skb_queue will be processed, but frames in
1096 * skb_queue_unreliable may be dropped if the total length of these
1097 * queues increases over the limit. */
1098 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1099 struct tasklet_struct tasklet;
1100 struct sk_buff_head skb_queue;
1101 struct sk_buff_head skb_queue_unreliable;
1103 spinlock_t rx_path_lock;
1107 * The mutex only protects the list, hash table and
1108 * counter, reads are done with RCU.
1110 struct mutex sta_mtx;
1111 spinlock_t tim_lock;
1112 unsigned long num_sta;
1113 struct list_head sta_list;
1114 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1115 struct timer_list sta_cleanup;
1119 * Tx latency statistics parameters for all stations.
1120 * Can enable via debugfs (NULL when disabled).
1122 struct ieee80211_tx_latency_bin_ranges __rcu *tx_latency;
1124 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1125 struct tasklet_struct tx_pending_tasklet;
1127 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1129 /* number of interfaces with corresponding IFF_ flags */
1130 atomic_t iff_allmultis, iff_promiscs;
1132 struct rate_control_ref *rate_ctrl;
1134 struct crypto_cipher *wep_tx_tfm;
1135 struct crypto_cipher *wep_rx_tfm;
1139 struct list_head interfaces;
1140 struct mutex iflist_mtx;
1143 * Key mutex, protects sdata's key_list and sta_info's
1144 * key pointers (write access, they're RCU.)
1146 struct mutex key_mtx;
1148 /* mutex for scan and work locking */
1151 /* Scanning and BSS list */
1152 unsigned long scanning;
1153 struct cfg80211_ssid scan_ssid;
1154 struct cfg80211_scan_request *int_scan_req;
1155 struct cfg80211_scan_request *scan_req;
1156 struct ieee80211_scan_request *hw_scan_req;
1157 struct cfg80211_chan_def scan_chandef;
1158 enum ieee80211_band hw_scan_band;
1159 int scan_channel_idx;
1161 int hw_scan_ies_bufsize;
1163 struct work_struct sched_scan_stopped_work;
1164 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1165 struct cfg80211_sched_scan_request *sched_scan_req;
1167 unsigned long leave_oper_channel_time;
1168 enum mac80211_scan_state next_scan_state;
1169 struct delayed_work scan_work;
1170 struct ieee80211_sub_if_data __rcu *scan_sdata;
1171 /* For backward compatibility only -- do not use */
1172 struct cfg80211_chan_def _oper_chandef;
1174 /* Temporary remain-on-channel for off-channel operations */
1175 struct ieee80211_channel *tmp_channel;
1177 /* channel contexts */
1178 struct list_head chanctx_list;
1179 struct mutex chanctx_mtx;
1182 /* dot11CountersTable */
1183 u32 dot11TransmittedFragmentCount;
1184 u32 dot11MulticastTransmittedFrameCount;
1185 u32 dot11FailedCount;
1186 u32 dot11RetryCount;
1187 u32 dot11MultipleRetryCount;
1188 u32 dot11FrameDuplicateCount;
1189 u32 dot11ReceivedFragmentCount;
1190 u32 dot11MulticastReceivedFrameCount;
1191 u32 dot11TransmittedFrameCount;
1193 #ifdef CONFIG_MAC80211_LEDS
1194 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1195 struct tpt_led_trigger *tpt_led_trigger;
1196 char tx_led_name[32], rx_led_name[32],
1197 assoc_led_name[32], radio_led_name[32];
1200 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1201 /* TX/RX handler statistics */
1202 unsigned int tx_handlers_drop;
1203 unsigned int tx_handlers_queued;
1204 unsigned int tx_handlers_drop_unencrypted;
1205 unsigned int tx_handlers_drop_fragment;
1206 unsigned int tx_handlers_drop_wep;
1207 unsigned int tx_handlers_drop_not_assoc;
1208 unsigned int tx_handlers_drop_unauth_port;
1209 unsigned int rx_handlers_drop;
1210 unsigned int rx_handlers_queued;
1211 unsigned int rx_handlers_drop_nullfunc;
1212 unsigned int rx_handlers_drop_defrag;
1213 unsigned int rx_handlers_drop_short;
1214 unsigned int tx_expand_skb_head;
1215 unsigned int tx_expand_skb_head_cloned;
1216 unsigned int rx_expand_skb_head;
1217 unsigned int rx_expand_skb_head2;
1218 unsigned int rx_handlers_fragments;
1219 unsigned int tx_status_drop;
1220 #define I802_DEBUG_INC(c) (c)++
1221 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1222 #define I802_DEBUG_INC(c) do { } while (0)
1223 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1226 int total_ps_buffered; /* total number of all buffered unicast and
1227 * multicast packets for power saving stations
1231 bool offchannel_ps_enabled;
1233 * PS can only be enabled when we have exactly one managed
1234 * interface (and monitors) in PS, this then points there.
1236 struct ieee80211_sub_if_data *ps_sdata;
1237 struct work_struct dynamic_ps_enable_work;
1238 struct work_struct dynamic_ps_disable_work;
1239 struct timer_list dynamic_ps_timer;
1240 struct notifier_block network_latency_notifier;
1241 struct notifier_block ifa_notifier;
1242 struct notifier_block ifa6_notifier;
1245 * The dynamic ps timeout configured from user space via WEXT -
1246 * this will override whatever chosen by mac80211 internally.
1248 int dynamic_ps_forced_timeout;
1250 int user_power_level; /* in dBm, for all interfaces */
1252 enum ieee80211_smps_mode smps_mode;
1254 struct work_struct restart_work;
1256 #ifdef CONFIG_MAC80211_DEBUGFS
1257 struct local_debugfsdentries {
1258 struct dentry *rcdir;
1259 struct dentry *keys;
1264 * Remain-on-channel support
1266 struct list_head roc_list;
1267 struct work_struct hw_roc_start, hw_roc_done;
1268 unsigned long hw_roc_start_time;
1269 u64 roc_cookie_counter;
1271 struct idr ack_status_frames;
1272 spinlock_t ack_status_lock;
1274 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1276 struct napi_struct *napi;
1278 /* virtual monitor interface */
1279 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1280 struct cfg80211_chan_def monitor_chandef;
1283 static inline struct ieee80211_sub_if_data *
1284 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1286 return netdev_priv(dev);
1289 static inline struct ieee80211_sub_if_data *
1290 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1292 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1295 /* this struct represents 802.11n's RA/TID combination */
1296 struct ieee80211_ra_tid {
1301 /* this struct holds the value parsing from channel switch IE */
1302 struct ieee80211_csa_ie {
1303 struct cfg80211_chan_def chandef;
1310 /* Parsed Information Elements */
1311 struct ieee802_11_elems {
1315 /* pointers to IEs */
1317 const u8 *supp_rates;
1318 const u8 *ds_params;
1319 const struct ieee80211_tim_ie *tim;
1320 const u8 *challenge;
1323 const u8 *ext_supp_rates;
1325 const u8 *wmm_param;
1326 const struct ieee80211_ht_cap *ht_cap_elem;
1327 const struct ieee80211_ht_operation *ht_operation;
1328 const struct ieee80211_vht_cap *vht_cap_elem;
1329 const struct ieee80211_vht_operation *vht_operation;
1330 const struct ieee80211_meshconf_ie *mesh_config;
1333 const __le16 *awake_window;
1337 const struct ieee80211_rann_ie *rann;
1338 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1339 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1340 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1341 const u8 *country_elem;
1342 const u8 *pwr_constr_elem;
1343 const struct ieee80211_timeout_interval_ie *timeout_int;
1344 const u8 *opmode_notif;
1345 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1346 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1348 /* length of them, respectively */
1354 u8 ext_supp_rates_len;
1362 u8 country_elem_len;
1364 /* whether a parse error occurred while retrieving these elements */
1368 static inline struct ieee80211_local *hw_to_local(
1369 struct ieee80211_hw *hw)
1371 return container_of(hw, struct ieee80211_local, hw);
1375 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1377 return ether_addr_equal(raddr, addr) ||
1378 is_broadcast_ether_addr(raddr);
1382 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1384 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1385 status->flag & RX_FLAG_MACTIME_END);
1386 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1389 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1390 struct ieee80211_rx_status *status,
1391 unsigned int mpdu_len,
1392 unsigned int mpdu_offset);
1393 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1394 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1395 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1397 void ieee80211_configure_filter(struct ieee80211_local *local);
1398 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1401 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1402 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1403 struct cfg80211_auth_request *req);
1404 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1405 struct cfg80211_assoc_request *req);
1406 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1407 struct cfg80211_deauth_request *req);
1408 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1409 struct cfg80211_disassoc_request *req);
1410 void ieee80211_send_pspoll(struct ieee80211_local *local,
1411 struct ieee80211_sub_if_data *sdata);
1412 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1413 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1414 int ieee80211_max_network_latency(struct notifier_block *nb,
1415 unsigned long data, void *dummy);
1416 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1417 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1418 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1419 struct sk_buff *skb);
1420 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1421 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1422 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1423 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1424 __le16 fc, bool acked);
1425 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1426 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1429 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1430 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1431 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1432 const u8 *bssid, const u8 *addr, u32 supp_rates);
1433 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1434 struct cfg80211_ibss_params *params);
1435 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1436 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1437 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1438 struct sk_buff *skb);
1439 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1440 struct cfg80211_csa_settings *csa_settings);
1441 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1442 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1445 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1446 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1447 struct sk_buff *skb);
1448 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1449 struct cfg80211_csa_settings *csa_settings);
1450 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1452 /* scan/BSS handling */
1453 void ieee80211_scan_work(struct work_struct *work);
1454 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1455 const u8 *ssid, u8 ssid_len,
1456 struct ieee80211_channel *chan,
1457 enum nl80211_bss_scan_width scan_width);
1458 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1459 struct cfg80211_scan_request *req);
1460 void ieee80211_scan_cancel(struct ieee80211_local *local);
1461 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1462 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1464 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1465 struct ieee80211_bss *
1466 ieee80211_bss_info_update(struct ieee80211_local *local,
1467 struct ieee80211_rx_status *rx_status,
1468 struct ieee80211_mgmt *mgmt,
1470 struct ieee802_11_elems *elems,
1471 struct ieee80211_channel *channel);
1472 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1473 struct ieee80211_bss *bss);
1475 /* scheduled scan handling */
1477 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1478 struct cfg80211_sched_scan_request *req);
1479 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1480 struct cfg80211_sched_scan_request *req);
1481 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1482 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1483 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1485 /* off-channel helpers */
1486 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1487 void ieee80211_offchannel_return(struct ieee80211_local *local);
1488 void ieee80211_roc_setup(struct ieee80211_local *local);
1489 void ieee80211_start_next_roc(struct ieee80211_local *local);
1490 void ieee80211_roc_purge(struct ieee80211_local *local,
1491 struct ieee80211_sub_if_data *sdata);
1492 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1493 void ieee80211_sw_roc_work(struct work_struct *work);
1494 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1496 /* channel switch handling */
1497 void ieee80211_csa_finalize_work(struct work_struct *work);
1498 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1499 struct cfg80211_csa_settings *params);
1501 /* interface handling */
1502 int ieee80211_iface_init(void);
1503 void ieee80211_iface_exit(void);
1504 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1505 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1506 struct vif_params *params);
1507 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1508 enum nl80211_iftype type);
1509 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1511 u32 ieee80211_idle_off(struct ieee80211_local *local);
1512 void ieee80211_recalc_idle(struct ieee80211_local *local);
1513 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1515 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1516 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1517 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1518 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1520 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1521 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1523 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1525 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1529 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1530 void ieee80211_tx_pending(unsigned long data);
1531 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1532 struct net_device *dev);
1533 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1534 struct net_device *dev);
1535 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1536 struct sk_buff_head *skbs);
1539 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1540 struct ieee80211_sta_ht_cap *ht_cap);
1541 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1542 struct ieee80211_supported_band *sband,
1543 const struct ieee80211_ht_cap *ht_cap_ie,
1544 struct sta_info *sta);
1545 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1546 const u8 *da, u16 tid,
1547 u16 initiator, u16 reason_code);
1548 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1549 enum ieee80211_smps_mode smps, const u8 *da,
1551 void ieee80211_request_smps_ap_work(struct work_struct *work);
1552 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1553 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1554 enum ieee80211_smps_mode smps_mode_new);
1556 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1557 u16 initiator, u16 reason, bool stop);
1558 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1559 u16 initiator, u16 reason, bool stop);
1560 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1561 enum ieee80211_agg_stop_reason reason);
1562 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1563 struct sta_info *sta,
1564 struct ieee80211_mgmt *mgmt, size_t len);
1565 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1566 struct sta_info *sta,
1567 struct ieee80211_mgmt *mgmt,
1569 void ieee80211_process_addba_request(struct ieee80211_local *local,
1570 struct sta_info *sta,
1571 struct ieee80211_mgmt *mgmt,
1574 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1575 enum ieee80211_agg_stop_reason reason);
1576 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1577 enum ieee80211_agg_stop_reason reason);
1578 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1579 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1580 void ieee80211_ba_session_work(struct work_struct *work);
1581 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1582 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1584 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1588 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1589 struct ieee80211_supported_band *sband,
1590 const struct ieee80211_vht_cap *vht_cap_ie,
1591 struct sta_info *sta);
1592 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1593 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1594 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1595 struct sta_info *sta, u8 opmode,
1596 enum ieee80211_band band, bool nss_only);
1597 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1598 struct sta_info *sta, u8 opmode,
1599 enum ieee80211_band band, bool nss_only);
1600 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1601 struct ieee80211_sta_vht_cap *vht_cap);
1603 /* Spectrum management */
1604 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1605 struct ieee80211_mgmt *mgmt,
1608 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1609 * @sdata: the sdata of the interface which has received the frame
1610 * @elems: parsed 802.11 elements received with the frame
1611 * @beacon: indicates if the frame was a beacon or probe response
1612 * @current_band: indicates the current band
1613 * @sta_flags: contains information about own capabilities and restrictions
1614 * to decide which channel switch announcements can be accepted. Only the
1615 * following subset of &enum ieee80211_sta_flags are evaluated:
1616 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1617 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1618 * %IEEE80211_STA_DISABLE_160MHZ.
1619 * @bssid: the currently connected bssid (for reporting)
1620 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1621 All of them will be filled with if success only.
1622 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1624 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1625 struct ieee802_11_elems *elems, bool beacon,
1626 enum ieee80211_band current_band,
1627 u32 sta_flags, u8 *bssid,
1628 struct ieee80211_csa_ie *csa_ie);
1630 /* Suspend/resume and hw reconfiguration */
1631 int ieee80211_reconfig(struct ieee80211_local *local);
1632 void ieee80211_stop_device(struct ieee80211_local *local);
1634 int __ieee80211_suspend(struct ieee80211_hw *hw,
1635 struct cfg80211_wowlan *wowlan);
1637 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1639 struct ieee80211_local *local = hw_to_local(hw);
1641 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1642 "%s: resume with hardware scan still in progress\n",
1643 wiphy_name(hw->wiphy));
1645 return ieee80211_reconfig(hw_to_local(hw));
1648 /* utility functions/constants */
1649 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1650 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1651 enum nl80211_iftype type);
1652 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1653 int rate, int erp, int short_preamble,
1655 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1656 struct ieee80211_hdr *hdr, const u8 *tsc,
1658 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1660 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1661 enum ieee80211_band band);
1663 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1664 struct sk_buff *skb, int tid,
1665 enum ieee80211_band band);
1668 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1669 struct sk_buff *skb, int tid,
1670 enum ieee80211_band band)
1673 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1677 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1678 struct sk_buff *skb, int tid)
1680 struct ieee80211_chanctx_conf *chanctx_conf;
1683 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1684 if (WARN_ON(!chanctx_conf)) {
1690 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1691 chanctx_conf->def.chan->band);
1695 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1696 struct sk_buff *skb)
1698 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1699 ieee80211_tx_skb_tid(sdata, skb, 7);
1702 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1703 struct ieee802_11_elems *elems,
1704 u64 filter, u32 crc);
1705 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1707 struct ieee802_11_elems *elems)
1709 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1712 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1713 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1714 void ieee80211_dynamic_ps_timer(unsigned long data);
1715 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1716 struct ieee80211_sub_if_data *sdata,
1718 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1719 struct ieee80211_hdr *hdr);
1720 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1721 struct ieee80211_hdr *hdr, bool ack);
1723 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1724 unsigned long queues,
1725 enum queue_stop_reason reason,
1727 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1728 struct ieee80211_sub_if_data *sdata,
1729 enum queue_stop_reason reason);
1730 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1731 struct ieee80211_sub_if_data *sdata,
1732 enum queue_stop_reason reason);
1733 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1734 unsigned long queues,
1735 enum queue_stop_reason reason,
1737 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1738 enum queue_stop_reason reason,
1740 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1741 enum queue_stop_reason reason,
1743 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1744 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1745 struct sk_buff *skb);
1746 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1747 struct sk_buff_head *skbs);
1748 void ieee80211_flush_queues(struct ieee80211_local *local,
1749 struct ieee80211_sub_if_data *sdata);
1751 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1752 u16 transaction, u16 auth_alg, u16 status,
1753 const u8 *extra, size_t extra_len, const u8 *bssid,
1754 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1756 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1757 const u8 *bssid, u16 stype, u16 reason,
1758 bool send_frame, u8 *frame_buf);
1759 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1761 struct ieee80211_scan_ies *ie_desc,
1762 const u8 *ie, size_t ie_len,
1763 u8 bands_used, u32 *rate_masks,
1764 struct cfg80211_chan_def *chandef);
1765 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1766 u8 *dst, u32 ratemask,
1767 struct ieee80211_channel *chan,
1768 const u8 *ssid, size_t ssid_len,
1769 const u8 *ie, size_t ie_len,
1771 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1772 const u8 *ssid, size_t ssid_len,
1773 const u8 *ie, size_t ie_len,
1774 u32 ratemask, bool directed, u32 tx_flags,
1775 struct ieee80211_channel *channel, bool scan);
1777 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1778 struct ieee802_11_elems *elems,
1779 enum ieee80211_band band, u32 *basic_rates);
1780 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1781 enum ieee80211_smps_mode smps_mode);
1782 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1783 enum ieee80211_smps_mode smps_mode);
1784 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1785 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1787 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1788 const u8 *ids, int n_ids, size_t offset);
1789 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1790 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1792 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1793 const struct cfg80211_chan_def *chandef,
1795 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1797 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1798 const struct ieee80211_supported_band *sband,
1799 const u8 *srates, int srates_len, u32 *rates);
1800 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1801 struct sk_buff *skb, bool need_basic,
1802 enum ieee80211_band band);
1803 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1804 struct sk_buff *skb, bool need_basic,
1805 enum ieee80211_band band);
1807 /* channel management */
1808 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1809 const struct ieee80211_ht_operation *ht_oper,
1810 struct cfg80211_chan_def *chandef);
1811 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1814 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1815 const struct cfg80211_chan_def *chandef,
1816 enum ieee80211_chanctx_mode mode);
1818 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
1819 const struct cfg80211_chan_def *chandef,
1820 enum ieee80211_chanctx_mode mode,
1821 bool radar_required);
1823 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata,
1825 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
1828 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1829 const struct cfg80211_chan_def *chandef,
1831 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1833 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1835 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1836 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1837 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1839 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
1840 struct ieee80211_chanctx *ctx);
1842 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1843 struct ieee80211_chanctx *chanctx);
1844 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
1845 struct ieee80211_chanctx *ctx);
1847 void ieee80211_dfs_cac_timer(unsigned long data);
1848 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1849 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1850 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1851 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1852 struct cfg80211_csa_settings *csa_settings);
1854 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
1855 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
1856 const struct ieee80211_cipher_scheme *
1857 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
1858 enum nl80211_iftype iftype);
1859 int ieee80211_cs_headroom(struct ieee80211_local *local,
1860 struct cfg80211_crypto_settings *crypto,
1861 enum nl80211_iftype iftype);
1862 void ieee80211_recalc_dtim(struct ieee80211_local *local,
1863 struct ieee80211_sub_if_data *sdata);
1864 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
1865 const struct cfg80211_chan_def *chandef,
1866 enum ieee80211_chanctx_mode chanmode,
1868 int ieee80211_max_num_channels(struct ieee80211_local *local);
1871 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
1872 const u8 *peer, u8 action_code, u8 dialog_token,
1873 u16 status_code, u32 peer_capability,
1874 bool initiator, const u8 *extra_ies,
1875 size_t extra_ies_len);
1876 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
1877 const u8 *peer, enum nl80211_tdls_operation oper);
1880 extern const struct ethtool_ops ieee80211_ethtool_ops;
1882 #ifdef CONFIG_MAC80211_NOINLINE
1883 #define debug_noinline noinline
1885 #define debug_noinline
1888 #endif /* IEEE80211_I_H */
1889 void ieee80211_tdls_peer_del_work(struct work_struct *wk);