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>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
16 #include <linux/kernel.h>
17 #include <linux/device.h>
18 #include <linux/if_ether.h>
19 #include <linux/interrupt.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/workqueue.h>
24 #include <linux/types.h>
25 #include <linux/spinlock.h>
26 #include <linux/etherdevice.h>
27 #include <linux/leds.h>
28 #include <linux/idr.h>
29 #include <linux/rhashtable.h>
30 #include <net/ieee80211_radiotap.h>
31 #include <net/cfg80211.h>
32 #include <net/mac80211.h>
38 extern const struct cfg80211_ops mac80211_config_ops;
40 struct ieee80211_local;
42 /* Maximum number of broadcast/multicast frames to buffer when some of the
43 * associated stations are using power saving. */
44 #define AP_MAX_BC_BUFFER 128
46 /* Maximum number of frames buffered to all STAs, including multicast frames.
47 * Note: increasing this limit increases the potential memory requirement. Each
48 * frame can be up to about 2 kB long. */
49 #define TOTAL_MAX_TX_BUFFER 512
51 /* Required encryption head and tailroom */
52 #define IEEE80211_ENCRYPT_HEADROOM 8
53 #define IEEE80211_ENCRYPT_TAILROOM 18
55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
56 * reception of at least three fragmented frames. This limit can be increased
57 * by changing this define, at the cost of slower frame reassembly and
58 * increased memory use (about 2 kB of RAM per entry). */
59 #define IEEE80211_FRAGMENT_MAX 4
61 /* power level hasn't been configured (or set to automatic) */
62 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
65 * Some APs experience problems when working with U-APSD. Decreasing the
66 * probability of that happening by using legacy mode for all ACs but VO isn't
69 * Cisco 4410N originally forced us to enable VO by default only because it
70 * treated non-VO ACs as legacy.
72 * However some APs (notably Netgear R7000) silently reclassify packets to
73 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
74 * clients would never see some frames (e.g. ARP responses) or would fetch them
75 * accidentally after a long time.
77 * It makes little sense to enable u-APSD queues by default because it needs
78 * userspace applications to be aware of it to actually take advantage of the
79 * possible additional powersavings. Implicitly depending on driver autotrigger
80 * frame support doesn't make much sense.
82 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
84 #define IEEE80211_DEFAULT_MAX_SP_LEN \
85 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
87 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
89 struct ieee80211_fragment_entry {
90 struct sk_buff_head skb_list;
91 unsigned long first_frag_time;
96 bool check_sequential_pn; /* needed for CCMP/GCMP */
97 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
101 struct ieee80211_bss {
102 u32 device_ts_beacon, device_ts_presp;
105 bool uapsd_supported;
107 #define IEEE80211_MAX_SUPP_RATES 32
108 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
109 size_t supp_rates_len;
110 struct ieee80211_rate *beacon_rate;
113 * During association, we save an ERP value from a probe response so
114 * that we can feed ERP info to the driver when handling the
115 * association completes. these fields probably won't be up-to-date
116 * otherwise, you probably don't want to use them.
121 /* Keep track of the corruption of the last beacon/probe response. */
124 /* Keep track of what bits of information we have valid info for. */
129 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
130 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
131 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
133 * These are bss flags that are attached to a bss in the
134 * @corrupt_data field of &struct ieee80211_bss.
136 enum ieee80211_bss_corrupt_data_flags {
137 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
138 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
142 * enum ieee80211_valid_data_flags - BSS valid data flags
143 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
144 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
145 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
147 * These are bss flags that are attached to a bss in the
148 * @valid_data field of &struct ieee80211_bss. They show which parts
149 * of the data structure were received as a result of an un-corrupted
150 * beacon/probe response.
152 enum ieee80211_bss_valid_data_flags {
153 IEEE80211_BSS_VALID_WMM = BIT(1),
154 IEEE80211_BSS_VALID_RATES = BIT(2),
155 IEEE80211_BSS_VALID_ERP = BIT(3)
158 typedef unsigned __bitwise__ ieee80211_tx_result;
159 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
160 #define TX_DROP ((__force ieee80211_tx_result) 1u)
161 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
163 #define IEEE80211_TX_UNICAST BIT(1)
164 #define IEEE80211_TX_PS_BUFFERED BIT(2)
166 struct ieee80211_tx_data {
168 struct sk_buff_head skbs;
169 struct ieee80211_local *local;
170 struct ieee80211_sub_if_data *sdata;
171 struct sta_info *sta;
172 struct ieee80211_key *key;
173 struct ieee80211_tx_rate rate;
179 typedef unsigned __bitwise__ ieee80211_rx_result;
180 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
181 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
182 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
183 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
186 * enum ieee80211_packet_rx_flags - packet RX flags
187 * @IEEE80211_RX_AMSDU: a-MSDU packet
188 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
189 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
191 * These are per-frame flags that are attached to a frame in the
192 * @rx_flags field of &struct ieee80211_rx_status.
194 enum ieee80211_packet_rx_flags {
195 IEEE80211_RX_AMSDU = BIT(3),
196 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
197 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
201 * enum ieee80211_rx_flags - RX data flags
203 * @IEEE80211_RX_CMNTR: received on cooked monitor already
204 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
205 * to cfg80211_report_obss_beacon().
207 * These flags are used across handling multiple interfaces
208 * for a single frame.
210 enum ieee80211_rx_flags {
211 IEEE80211_RX_CMNTR = BIT(0),
212 IEEE80211_RX_BEACON_REPORTED = BIT(1),
215 struct ieee80211_rx_data {
216 struct napi_struct *napi;
218 struct ieee80211_local *local;
219 struct ieee80211_sub_if_data *sdata;
220 struct sta_info *sta;
221 struct ieee80211_key *key;
226 * Index into sequence numbers array, 0..16
227 * since the last (16) is used for non-QoS,
228 * will be 16 on non-QoS frames.
233 * Index into the security IV/PN arrays, 0..16
234 * since the last (16) is used for CCMP-encrypted
235 * management frames, will be set to 16 on mgmt
236 * frames and 0 on non-QoS frames.
244 struct ieee80211_csa_settings {
245 const u16 *counter_offsets_beacon;
246 const u16 *counter_offsets_presp;
248 int n_counter_offsets_beacon;
249 int n_counter_offsets_presp;
256 int head_len, tail_len;
257 struct ieee80211_meshconf_ie *meshconf;
258 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
259 u8 csa_current_counter;
260 struct rcu_head rcu_head;
264 struct rcu_head rcu_head;
266 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
271 /* yes, this looks ugly, but guarantees that we can later use
273 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
274 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
275 __aligned(__alignof__(unsigned long));
276 struct sk_buff_head bc_buf;
277 atomic_t num_sta_ps; /* number of stations in PS mode */
282 struct ieee80211_if_ap {
283 struct beacon_data __rcu *beacon;
284 struct probe_resp __rcu *probe_resp;
286 /* to be used after channel switch. */
287 struct cfg80211_beacon_data *next_beacon;
288 struct list_head vlans; /* write-protected with RTNL and local->mtx */
291 atomic_t num_mcast_sta; /* number of stations receiving multicast */
292 enum ieee80211_smps_mode req_smps, /* requested smps mode */
293 driver_smps_mode; /* smps mode request */
295 struct work_struct request_smps_work;
298 struct ieee80211_if_wds {
299 struct sta_info *sta;
300 u8 remote_addr[ETH_ALEN];
303 struct ieee80211_if_vlan {
304 struct list_head list; /* write-protected with RTNL and local->mtx */
306 /* used for all tx if the VLAN is configured to 4-addr mode */
307 struct sta_info __rcu *sta;
311 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
312 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
313 __u32 fwded_frames; /* Mesh total forwarded frames */
314 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
315 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
316 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
319 #define PREQ_Q_F_START 0x1
320 #define PREQ_Q_F_REFRESH 0x2
321 struct mesh_preq_queue {
322 struct list_head list;
327 struct ieee80211_roc_work {
328 struct list_head list;
330 struct ieee80211_sub_if_data *sdata;
332 struct ieee80211_channel *chan;
334 bool started, abort, hw_begun, notified;
337 unsigned long start_time;
339 u32 duration, req_duration;
340 struct sk_buff *frame;
341 u64 cookie, mgmt_tx_cookie;
342 enum ieee80211_roc_type type;
345 /* flags used in struct ieee80211_if_managed.flags */
346 enum ieee80211_sta_flags {
347 IEEE80211_STA_CONNECTION_POLL = BIT(1),
348 IEEE80211_STA_CONTROL_PORT = BIT(2),
349 IEEE80211_STA_DISABLE_HT = BIT(4),
350 IEEE80211_STA_MFP_ENABLED = BIT(6),
351 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
352 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
353 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
354 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
355 IEEE80211_STA_DISABLE_VHT = BIT(11),
356 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
357 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
358 IEEE80211_STA_DISABLE_WMM = BIT(14),
359 IEEE80211_STA_ENABLE_RRM = BIT(15),
362 struct ieee80211_mgd_auth_data {
363 struct cfg80211_bss *bss;
364 unsigned long timeout;
366 u16 algorithm, expected_transaction;
368 u8 key[WLAN_KEY_LEN_WEP104];
371 bool timeout_started;
373 u16 sae_trans, sae_status;
378 struct ieee80211_mgd_assoc_data {
379 struct cfg80211_bss *bss;
380 const u8 *supp_rates;
382 unsigned long timeout;
386 u8 prev_bssid[ETH_ALEN];
387 u8 ssid[IEEE80211_MAX_SSID_LEN];
393 bool timeout_started;
397 struct ieee80211_vht_cap ap_vht_cap;
403 struct ieee80211_sta_tx_tspec {
404 /* timestamp of the first packet in the time slice */
405 unsigned long time_slice_start;
407 u32 admitted_time; /* in usecs, unlike over the air */
409 s8 up; /* signed to be able to invalidate with -1 during teardown */
411 /* consumed TX time in microseconds in the time slice */
412 u32 consumed_tx_time;
414 TX_TSPEC_ACTION_NONE = 0,
415 TX_TSPEC_ACTION_DOWNGRADE,
416 TX_TSPEC_ACTION_STOP_DOWNGRADE,
421 DECLARE_EWMA(beacon_signal, 16, 4)
423 struct ieee80211_if_managed {
424 struct timer_list timer;
425 struct timer_list conn_mon_timer;
426 struct timer_list bcn_mon_timer;
427 struct timer_list chswitch_timer;
428 struct work_struct monitor_work;
429 struct work_struct chswitch_work;
430 struct work_struct beacon_connection_loss_work;
431 struct work_struct csa_connection_drop_work;
433 unsigned long beacon_timeout;
434 unsigned long probe_timeout;
435 int probe_send_count;
436 bool nullfunc_failed;
437 bool connection_loss;
439 struct cfg80211_bss *associated;
440 struct ieee80211_mgd_auth_data *auth_data;
441 struct ieee80211_mgd_assoc_data *assoc_data;
447 bool powersave; /* powersave requested for this iface */
448 bool broken_ap; /* AP is broken -- turn off powersave */
451 enum ieee80211_smps_mode req_smps, /* requested smps mode */
452 driver_smps_mode; /* smps mode request */
454 struct work_struct request_smps_work;
458 bool csa_waiting_bcn;
459 bool csa_ignored_same_chan;
461 bool beacon_crc_valid;
465 bool status_received;
469 IEEE80211_MFP_DISABLED,
470 IEEE80211_MFP_OPTIONAL,
471 IEEE80211_MFP_REQUIRED
472 } mfp; /* management frame protection */
475 * Bitmask of enabled u-apsd queues,
476 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
479 unsigned int uapsd_queues;
482 * Maximum number of buffered frames AP can deliver during a
483 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
484 * Needs a new association to take effect.
486 unsigned int uapsd_max_sp_len;
488 int wmm_last_param_set;
494 struct ewma_beacon_signal ave_beacon_signal;
497 * Number of Beacon frames used in ave_beacon_signal. This can be used
498 * to avoid generating less reliable cqm events that would be based
499 * only on couple of received frames.
501 unsigned int count_beacon_signal;
503 /* Number of times beacon loss was invoked. */
504 unsigned int beacon_loss_count;
507 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
508 * that triggered a cqm event. 0 indicates that no event has been
509 * generated for the current association.
511 int last_cqm_event_signal;
514 * State variables for keeping track of RSSI of the AP currently
515 * connected to and informing driver when RSSI has gone
516 * below/above a certain threshold.
518 int rssi_min_thold, rssi_max_thold;
519 int last_ave_beacon_signal;
521 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
522 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
523 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
524 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
527 u8 tdls_peer[ETH_ALEN] __aligned(2);
528 struct delayed_work tdls_peer_del_work;
529 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
530 struct sk_buff *teardown_skb; /* A copy to send through the AP */
531 spinlock_t teardown_lock; /* To lock changing teardown_skb */
532 bool tdls_chan_switch_prohibited;
533 bool tdls_wider_bw_prohibited;
535 /* WMM-AC TSPEC support */
536 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
537 /* Use a separate work struct so that we can do something here
538 * while the sdata->work is flushing the queues, for example.
539 * otherwise, in scenarios where we hardly get any traffic out
540 * on the BE queue, but there's a lot of VO traffic, we might
541 * get stuck in a downgraded situation and flush takes forever.
543 struct delayed_work tx_tspec_wk;
546 struct ieee80211_if_ibss {
547 struct timer_list timer;
548 struct work_struct csa_connection_drop_work;
550 unsigned long last_scan_completed;
559 bool userspace_handles_dfs;
561 u8 bssid[ETH_ALEN] __aligned(2);
562 u8 ssid[IEEE80211_MAX_SSID_LEN];
565 struct cfg80211_chan_def chandef;
567 unsigned long ibss_join_req;
568 /* probe response/beacon for IBSS */
569 struct beacon_data __rcu *presp;
571 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
572 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
574 spinlock_t incomplete_lock;
575 struct list_head incomplete_stations;
578 IEEE80211_IBSS_MLME_SEARCH,
579 IEEE80211_IBSS_MLME_JOINED,
584 * struct ieee80211_if_ocb - OCB mode state
586 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
587 * @wrkq_flags: OCB deferred task action
588 * @incomplete_lock: delayed STA insertion lock
589 * @incomplete_stations: list of STAs waiting for delayed insertion
590 * @joined: indication if the interface is connected to an OCB network
592 struct ieee80211_if_ocb {
593 struct timer_list housekeeping_timer;
594 unsigned long wrkq_flags;
596 spinlock_t incomplete_lock;
597 struct list_head incomplete_stations;
603 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
605 * these declarations define the interface, which enables
606 * vendor-specific mesh synchronization
609 struct ieee802_11_elems;
610 struct ieee80211_mesh_sync_ops {
611 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
613 struct ieee80211_mgmt *mgmt,
614 struct ieee802_11_elems *elems,
615 struct ieee80211_rx_status *rx_status);
617 /* should be called with beacon_data under RCU read lock */
618 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
619 struct beacon_data *beacon);
620 /* add other framework functions here */
623 struct mesh_csa_settings {
624 struct rcu_head rcu_head;
625 struct cfg80211_csa_settings settings;
628 struct ieee80211_if_mesh {
629 struct timer_list housekeeping_timer;
630 struct timer_list mesh_path_timer;
631 struct timer_list mesh_path_root_timer;
633 unsigned long wrkq_flags;
634 unsigned long mbss_changed;
636 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
638 /* Active Path Selection Protocol Identifier */
640 /* Active Path Selection Metric Identifier */
642 /* Congestion Control Mode Identifier */
644 /* Synchronization Protocol Identifier */
646 /* Authentication Protocol Identifier */
648 /* Local mesh Sequence Number */
650 /* Last used PREQ ID */
653 /* Timestamp of last SN update */
654 unsigned long last_sn_update;
655 /* Time when it's ok to send next PERR */
656 unsigned long next_perr;
657 /* Timestamp of last PREQ sent */
658 unsigned long last_preq;
659 struct mesh_rmc *rmc;
660 spinlock_t mesh_preq_queue_lock;
661 struct mesh_preq_queue preq_queue;
663 struct mesh_stats mshstats;
664 struct mesh_config mshcfg;
665 atomic_t estab_plinks;
667 bool accepting_plinks;
669 struct beacon_data __rcu *beacon;
673 IEEE80211_MESH_SEC_NONE = 0x0,
674 IEEE80211_MESH_SEC_AUTHED = 0x1,
675 IEEE80211_MESH_SEC_SECURED = 0x2,
678 /* Extensible Synchronization Framework */
679 const struct ieee80211_mesh_sync_ops *sync_ops;
680 s64 sync_offset_clockdrift_max;
681 spinlock_t sync_offset_lock;
683 /* mesh power save */
684 enum nl80211_mesh_power_mode nonpeer_pm;
685 int ps_peers_light_sleep;
686 int ps_peers_deep_sleep;
688 /* Channel Switching Support */
689 struct mesh_csa_settings __rcu *csa;
691 IEEE80211_MESH_CSA_ROLE_NONE,
692 IEEE80211_MESH_CSA_ROLE_INIT,
693 IEEE80211_MESH_CSA_ROLE_REPEATER,
698 /* offset from skb->data while building IE */
701 struct mesh_table *mesh_paths;
702 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
703 int mesh_paths_generation;
704 int mpp_paths_generation;
707 #ifdef CONFIG_MAC80211_MESH
708 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
709 do { (msh)->mshstats.name++; } while (0)
711 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
716 * enum ieee80211_sub_if_data_flags - virtual interface flags
718 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
719 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
720 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
721 * associated stations and deliver multicast frames both
722 * back to wireless media and to the local net stack.
723 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
724 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
726 enum ieee80211_sub_if_data_flags {
727 IEEE80211_SDATA_ALLMULTI = BIT(0),
728 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
729 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
730 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
731 IEEE80211_SDATA_IN_DRIVER = BIT(5),
735 * enum ieee80211_sdata_state_bits - virtual interface state bits
736 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
737 * mirrors netif_running() but is separate for interface type
738 * change handling while the interface is up
739 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
740 * mode, so queues are stopped
741 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
742 * to offchannel, reset when offchannel returns
744 enum ieee80211_sdata_state_bits {
746 SDATA_STATE_OFFCHANNEL,
747 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
751 * enum ieee80211_chanctx_mode - channel context configuration mode
753 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
754 * multiple interfaces
755 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
756 * only by a single interface. This can be used for example for
757 * non-fixed channel IBSS.
759 enum ieee80211_chanctx_mode {
760 IEEE80211_CHANCTX_SHARED,
761 IEEE80211_CHANCTX_EXCLUSIVE
765 * enum ieee80211_chanctx_replace_state - channel context replacement state
767 * This is used for channel context in-place reservations that require channel
768 * context switch/swap.
770 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
771 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
772 * by a (not yet registered) channel context pointed by %replace_ctx.
773 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
774 * replaces an existing channel context pointed to by %replace_ctx.
776 enum ieee80211_chanctx_replace_state {
777 IEEE80211_CHANCTX_REPLACE_NONE,
778 IEEE80211_CHANCTX_WILL_BE_REPLACED,
779 IEEE80211_CHANCTX_REPLACES_OTHER,
782 struct ieee80211_chanctx {
783 struct list_head list;
784 struct rcu_head rcu_head;
786 struct list_head assigned_vifs;
787 struct list_head reserved_vifs;
789 enum ieee80211_chanctx_replace_state replace_state;
790 struct ieee80211_chanctx *replace_ctx;
792 enum ieee80211_chanctx_mode mode;
795 struct ieee80211_chanctx_conf conf;
798 struct mac80211_qos_map {
799 struct cfg80211_qos_map qos_map;
800 struct rcu_head rcu_head;
803 enum txq_info_flags {
806 IEEE80211_TXQ_NO_AMSDU,
810 * struct txq_info - per tid queue
812 * @tin: contains packets split into multiple flows
813 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
814 * a fq_flow which is already owned by a different tin
818 struct fq_flow def_flow;
822 struct ieee80211_txq txq;
825 struct ieee80211_sub_if_data {
826 struct list_head list;
828 struct wireless_dev wdev;
831 struct list_head key_list;
833 /* count for keys needing tailroom space allocation */
834 int crypto_tx_tailroom_needed_cnt;
835 int crypto_tx_tailroom_pending_dec;
836 struct delayed_work dec_tailroom_needed_wk;
838 struct net_device *dev;
839 struct ieee80211_local *local;
847 /* Fragment table for host-based reassembly */
848 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
849 unsigned int fragment_next;
851 /* TID bitmap for NoAck policy */
854 /* bit field of ACM bits (BIT(802.1D tag)) */
857 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
858 struct ieee80211_key __rcu *default_unicast_key;
859 struct ieee80211_key __rcu *default_multicast_key;
860 struct ieee80211_key __rcu *default_mgmt_key;
863 __be16 control_port_protocol;
864 bool control_port_no_encrypt;
865 int encrypt_headroom;
867 atomic_t num_tx_queued;
868 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
869 struct mac80211_qos_map __rcu *qos_map;
871 struct work_struct csa_finalize_work;
872 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
873 struct cfg80211_chan_def csa_chandef;
875 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
876 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
878 /* context reservation -- protected with chanctx_mtx */
879 struct ieee80211_chanctx *reserved_chanctx;
880 struct cfg80211_chan_def reserved_chandef;
881 bool reserved_radar_required;
884 /* used to reconfigure hardware SM PS */
885 struct work_struct recalc_smps;
887 struct work_struct work;
888 struct sk_buff_head skb_queue;
891 enum ieee80211_smps_mode smps_mode;
893 int user_power_level; /* in dBm */
894 int ap_power_level; /* in dBm */
897 struct delayed_work dfs_cac_timer_work;
900 * AP this belongs to: self in AP mode and
901 * corresponding AP in VLAN mode, NULL for
902 * all others (might be needed later in IBSS)
904 struct ieee80211_if_ap *bss;
906 /* bitmap of allowed (non-MCS) rate indexes for rate control */
907 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
909 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
910 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
912 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
913 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
916 struct ieee80211_if_ap ap;
917 struct ieee80211_if_wds wds;
918 struct ieee80211_if_vlan vlan;
919 struct ieee80211_if_managed mgd;
920 struct ieee80211_if_ibss ibss;
921 struct ieee80211_if_mesh mesh;
922 struct ieee80211_if_ocb ocb;
926 #ifdef CONFIG_MAC80211_DEBUGFS
928 struct dentry *subdir_stations;
929 struct dentry *default_unicast_key;
930 struct dentry *default_multicast_key;
931 struct dentry *default_mgmt_key;
935 /* must be last, dynamically sized area in this! */
936 struct ieee80211_vif vif;
940 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
942 return container_of(p, struct ieee80211_sub_if_data, vif);
945 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
946 __acquires(&sdata->wdev.mtx)
948 mutex_lock(&sdata->wdev.mtx);
949 __acquire(&sdata->wdev.mtx);
952 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
953 __releases(&sdata->wdev.mtx)
955 mutex_unlock(&sdata->wdev.mtx);
956 __release(&sdata->wdev.mtx);
959 #define sdata_dereference(p, sdata) \
960 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
963 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
965 lockdep_assert_held(&sdata->wdev.mtx);
968 static inline enum nl80211_band
969 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
971 enum nl80211_band band = NL80211_BAND_2GHZ;
972 struct ieee80211_chanctx_conf *chanctx_conf;
975 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
976 if (!WARN_ON(!chanctx_conf))
977 band = chanctx_conf->def.chan->band;
984 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
986 switch (chandef->width) {
987 case NL80211_CHAN_WIDTH_5:
989 case NL80211_CHAN_WIDTH_10:
997 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
999 struct ieee80211_chanctx_conf *chanctx_conf;
1003 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1005 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1011 struct ieee80211_rx_agg {
1016 enum sdata_queue_type {
1017 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1018 IEEE80211_SDATA_QUEUE_AGG_START = 1,
1019 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
1020 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1021 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1025 IEEE80211_RX_MSG = 1,
1026 IEEE80211_TX_STATUS_MSG = 2,
1029 enum queue_stop_reason {
1030 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1031 IEEE80211_QUEUE_STOP_REASON_PS,
1032 IEEE80211_QUEUE_STOP_REASON_CSA,
1033 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1034 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1035 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1036 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1037 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1038 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1039 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1041 IEEE80211_QUEUE_STOP_REASONS,
1044 #ifdef CONFIG_MAC80211_LEDS
1045 struct tpt_led_trigger {
1047 const struct ieee80211_tpt_blink *blink_table;
1048 unsigned int blink_table_len;
1049 struct timer_list timer;
1050 unsigned long prev_traffic;
1051 unsigned long tx_bytes, rx_bytes;
1052 unsigned int active, want;
1058 * mac80211 scan flags - currently active scan mode
1060 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1061 * well be on the operating channel
1062 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1063 * determine if we are on the operating channel or not
1064 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1065 * channel. This should not interrupt normal traffic.
1066 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1067 * that the scan completed.
1068 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1069 * a scan complete for an aborted scan.
1070 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1076 SCAN_ONCHANNEL_SCANNING,
1083 * enum mac80211_scan_state - scan state machine states
1085 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1086 * determines if we should keep on scanning or switch back to the
1088 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1089 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1090 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1092 * @SCAN_RESUME: Resume the scan and scan the next channel
1093 * @SCAN_ABORT: Abort the scan and go back to operating channel
1095 enum mac80211_scan_state {
1104 struct ieee80211_local {
1105 /* embed the driver visible part.
1106 * don't cast (use the static inlines below), but we keep
1107 * it first anyway so they become a no-op */
1108 struct ieee80211_hw hw;
1112 const struct ieee80211_ops *ops;
1115 * private workqueue to mac80211. mac80211 makes this accessible
1116 * via ieee80211_queue_work()
1118 struct workqueue_struct *workqueue;
1120 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1121 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1122 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1123 spinlock_t queue_stop_reason_lock;
1126 int monitors, cooked_mntrs;
1127 /* number of interfaces with corresponding FIF_ flags */
1128 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1131 unsigned int filter_flags; /* FIF_* */
1133 bool wiphy_ciphers_allocated;
1137 /* protects the aggregated multicast list and filter calls */
1138 spinlock_t filter_lock;
1140 /* used for uploading changed mc list */
1141 struct work_struct reconfig_filter;
1143 /* aggregated multicast list */
1144 struct netdev_hw_addr_list mc_list;
1146 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1149 * suspended is true if we finished all the suspend _and_ we have
1150 * not yet come up from resume. This is to be used by mac80211
1151 * to ensure driver sanity during suspend and mac80211's own
1152 * sanity. It can eventually be used for WoW as well.
1157 * Resuming is true while suspended, but when we're reprogramming the
1158 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1159 * again even though some other parts of the stack are still suspended
1160 * and we still drop received frames to avoid waking the stack.
1165 * quiescing is true during the suspend process _only_ to
1166 * ease timer cancelling etc.
1170 /* device is started */
1173 /* device is during a HW reconfig */
1176 /* wowlan is enabled -- don't reconfig on resume */
1179 struct work_struct radar_detected_work;
1181 /* number of RX chains the hardware has */
1184 int tx_headroom; /* required headroom for hardware/radiotap */
1186 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1187 * added to skb_queue will be processed, but frames in
1188 * skb_queue_unreliable may be dropped if the total length of these
1189 * queues increases over the limit. */
1190 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1191 struct tasklet_struct tasklet;
1192 struct sk_buff_head skb_queue;
1193 struct sk_buff_head skb_queue_unreliable;
1195 spinlock_t rx_path_lock;
1199 * The mutex only protects the list, hash table and
1200 * counter, reads are done with RCU.
1202 struct mutex sta_mtx;
1203 spinlock_t tim_lock;
1204 unsigned long num_sta;
1205 struct list_head sta_list;
1206 struct rhashtable sta_hash;
1207 struct timer_list sta_cleanup;
1210 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1211 struct tasklet_struct tx_pending_tasklet;
1213 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1215 /* number of interfaces with allmulti RX */
1216 atomic_t iff_allmultis;
1218 struct rate_control_ref *rate_ctrl;
1220 struct crypto_cipher *wep_tx_tfm;
1221 struct crypto_cipher *wep_rx_tfm;
1225 struct list_head interfaces;
1226 struct mutex iflist_mtx;
1229 * Key mutex, protects sdata's key_list and sta_info's
1230 * key pointers (write access, they're RCU.)
1232 struct mutex key_mtx;
1234 /* mutex for scan and work locking */
1237 /* Scanning and BSS list */
1238 unsigned long scanning;
1239 struct cfg80211_ssid scan_ssid;
1240 struct cfg80211_scan_request *int_scan_req;
1241 struct cfg80211_scan_request __rcu *scan_req;
1242 struct ieee80211_scan_request *hw_scan_req;
1243 struct cfg80211_chan_def scan_chandef;
1244 enum nl80211_band hw_scan_band;
1245 int scan_channel_idx;
1247 int hw_scan_ies_bufsize;
1249 struct work_struct sched_scan_stopped_work;
1250 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1251 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1252 u8 scan_addr[ETH_ALEN];
1254 unsigned long leave_oper_channel_time;
1255 enum mac80211_scan_state next_scan_state;
1256 struct delayed_work scan_work;
1257 struct ieee80211_sub_if_data __rcu *scan_sdata;
1258 /* For backward compatibility only -- do not use */
1259 struct cfg80211_chan_def _oper_chandef;
1261 /* Temporary remain-on-channel for off-channel operations */
1262 struct ieee80211_channel *tmp_channel;
1264 /* channel contexts */
1265 struct list_head chanctx_list;
1266 struct mutex chanctx_mtx;
1268 #ifdef CONFIG_MAC80211_LEDS
1269 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1270 struct led_trigger tpt_led;
1271 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1272 atomic_t radio_led_active, tpt_led_active;
1273 struct tpt_led_trigger *tpt_led_trigger;
1276 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1278 /* dot11CountersTable */
1279 u32 dot11TransmittedFragmentCount;
1280 u32 dot11MulticastTransmittedFrameCount;
1281 u32 dot11FailedCount;
1282 u32 dot11RetryCount;
1283 u32 dot11MultipleRetryCount;
1284 u32 dot11FrameDuplicateCount;
1285 u32 dot11ReceivedFragmentCount;
1286 u32 dot11MulticastReceivedFrameCount;
1287 u32 dot11TransmittedFrameCount;
1289 /* TX/RX handler statistics */
1290 unsigned int tx_handlers_drop;
1291 unsigned int tx_handlers_queued;
1292 unsigned int tx_handlers_drop_wep;
1293 unsigned int tx_handlers_drop_not_assoc;
1294 unsigned int tx_handlers_drop_unauth_port;
1295 unsigned int rx_handlers_drop;
1296 unsigned int rx_handlers_queued;
1297 unsigned int rx_handlers_drop_nullfunc;
1298 unsigned int rx_handlers_drop_defrag;
1299 unsigned int tx_expand_skb_head;
1300 unsigned int tx_expand_skb_head_cloned;
1301 unsigned int rx_expand_skb_head_defrag;
1302 unsigned int rx_handlers_fragments;
1303 unsigned int tx_status_drop;
1304 #define I802_DEBUG_INC(c) (c)++
1305 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1306 #define I802_DEBUG_INC(c) do { } while (0)
1307 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1310 int total_ps_buffered; /* total number of all buffered unicast and
1311 * multicast packets for power saving stations
1315 bool offchannel_ps_enabled;
1317 * PS can only be enabled when we have exactly one managed
1318 * interface (and monitors) in PS, this then points there.
1320 struct ieee80211_sub_if_data *ps_sdata;
1321 struct work_struct dynamic_ps_enable_work;
1322 struct work_struct dynamic_ps_disable_work;
1323 struct timer_list dynamic_ps_timer;
1324 struct notifier_block ifa_notifier;
1325 struct notifier_block ifa6_notifier;
1328 * The dynamic ps timeout configured from user space via WEXT -
1329 * this will override whatever chosen by mac80211 internally.
1331 int dynamic_ps_forced_timeout;
1333 int user_power_level; /* in dBm, for all interfaces */
1335 enum ieee80211_smps_mode smps_mode;
1337 struct work_struct restart_work;
1339 #ifdef CONFIG_MAC80211_DEBUGFS
1340 struct local_debugfsdentries {
1341 struct dentry *rcdir;
1342 struct dentry *keys;
1347 * Remain-on-channel support
1349 struct delayed_work roc_work;
1350 struct list_head roc_list;
1351 struct work_struct hw_roc_start, hw_roc_done;
1352 unsigned long hw_roc_start_time;
1353 u64 roc_cookie_counter;
1355 struct idr ack_status_frames;
1356 spinlock_t ack_status_lock;
1358 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1360 /* virtual monitor interface */
1361 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1362 struct cfg80211_chan_def monitor_chandef;
1364 /* extended capabilities provided by mac80211 */
1367 /* TDLS channel switch */
1368 struct work_struct tdls_chsw_work;
1369 struct sk_buff_head skb_queue_tdls_chsw;
1372 static inline struct ieee80211_sub_if_data *
1373 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1375 return netdev_priv(dev);
1378 static inline struct ieee80211_sub_if_data *
1379 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1381 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1384 /* this struct represents 802.11n's RA/TID combination */
1385 struct ieee80211_ra_tid {
1390 /* this struct holds the value parsing from channel switch IE */
1391 struct ieee80211_csa_ie {
1392 struct cfg80211_chan_def chandef;
1399 /* Parsed Information Elements */
1400 struct ieee802_11_elems {
1404 /* pointers to IEs */
1405 const struct ieee80211_tdls_lnkie *lnk_id;
1406 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1407 const u8 *ext_capab;
1409 const u8 *supp_rates;
1410 const u8 *ds_params;
1411 const struct ieee80211_tim_ie *tim;
1412 const u8 *challenge;
1415 const u8 *ext_supp_rates;
1417 const u8 *wmm_param;
1418 const struct ieee80211_ht_cap *ht_cap_elem;
1419 const struct ieee80211_ht_operation *ht_operation;
1420 const struct ieee80211_vht_cap *vht_cap_elem;
1421 const struct ieee80211_vht_operation *vht_operation;
1422 const struct ieee80211_meshconf_ie *mesh_config;
1425 const __le16 *awake_window;
1429 const struct ieee80211_rann_ie *rann;
1430 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1431 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1432 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1433 const u8 *country_elem;
1434 const u8 *pwr_constr_elem;
1435 const u8 *cisco_dtpc_elem;
1436 const struct ieee80211_timeout_interval_ie *timeout_int;
1437 const u8 *opmode_notif;
1438 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1439 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1441 /* length of them, respectively */
1448 u8 ext_supp_rates_len;
1456 u8 country_elem_len;
1458 /* whether a parse error occurred while retrieving these elements */
1462 static inline struct ieee80211_local *hw_to_local(
1463 struct ieee80211_hw *hw)
1465 return container_of(hw, struct ieee80211_local, hw);
1468 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1470 return container_of(txq, struct txq_info, txq);
1473 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1475 return ether_addr_equal(raddr, addr) ||
1476 is_broadcast_ether_addr(raddr);
1480 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1482 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1483 status->flag & RX_FLAG_MACTIME_END);
1484 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1486 /* can't handle HT/VHT preamble yet */
1487 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1488 !(status->flag & (RX_FLAG_HT | RX_FLAG_VHT)))
1493 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1494 struct ieee80211_rx_status *status,
1495 unsigned int mpdu_len,
1496 unsigned int mpdu_offset);
1497 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1498 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1499 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1501 void ieee80211_configure_filter(struct ieee80211_local *local);
1502 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1504 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1505 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1506 u64 *cookie, gfp_t gfp);
1508 void ieee80211_check_fast_rx(struct sta_info *sta);
1509 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1510 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1511 void ieee80211_clear_fast_rx(struct sta_info *sta);
1514 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1515 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1516 struct cfg80211_auth_request *req);
1517 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1518 struct cfg80211_assoc_request *req);
1519 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1520 struct cfg80211_deauth_request *req);
1521 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1522 struct cfg80211_disassoc_request *req);
1523 void ieee80211_send_pspoll(struct ieee80211_local *local,
1524 struct ieee80211_sub_if_data *sdata);
1525 void ieee80211_recalc_ps(struct ieee80211_local *local);
1526 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1527 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1528 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1529 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1530 struct sk_buff *skb);
1531 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1532 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1533 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1534 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1535 __le16 fc, bool acked);
1536 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1537 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1538 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1541 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1542 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1543 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1544 const u8 *bssid, const u8 *addr, u32 supp_rates);
1545 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1546 struct cfg80211_ibss_params *params);
1547 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1548 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1549 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1550 struct sk_buff *skb);
1551 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1552 struct cfg80211_csa_settings *csa_settings);
1553 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1554 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1557 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1558 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1559 const u8 *bssid, const u8 *addr, u32 supp_rates);
1560 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1561 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1562 struct ocb_setup *setup);
1563 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1566 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1567 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1568 struct sk_buff *skb);
1569 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1570 struct cfg80211_csa_settings *csa_settings);
1571 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1573 /* scan/BSS handling */
1574 void ieee80211_scan_work(struct work_struct *work);
1575 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1576 const u8 *ssid, u8 ssid_len,
1577 struct ieee80211_channel **channels,
1578 unsigned int n_channels,
1579 enum nl80211_bss_scan_width scan_width);
1580 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1581 struct cfg80211_scan_request *req);
1582 void ieee80211_scan_cancel(struct ieee80211_local *local);
1583 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1584 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1586 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1587 struct ieee80211_bss *
1588 ieee80211_bss_info_update(struct ieee80211_local *local,
1589 struct ieee80211_rx_status *rx_status,
1590 struct ieee80211_mgmt *mgmt,
1592 struct ieee802_11_elems *elems,
1593 struct ieee80211_channel *channel);
1594 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1595 struct ieee80211_bss *bss);
1597 /* scheduled scan handling */
1599 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1600 struct cfg80211_sched_scan_request *req);
1601 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1602 struct cfg80211_sched_scan_request *req);
1603 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1604 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1605 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1607 /* off-channel/mgmt-tx */
1608 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1609 void ieee80211_offchannel_return(struct ieee80211_local *local);
1610 void ieee80211_roc_setup(struct ieee80211_local *local);
1611 void ieee80211_start_next_roc(struct ieee80211_local *local);
1612 void ieee80211_roc_purge(struct ieee80211_local *local,
1613 struct ieee80211_sub_if_data *sdata);
1614 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1615 struct ieee80211_channel *chan,
1616 unsigned int duration, u64 *cookie);
1617 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1618 struct wireless_dev *wdev, u64 cookie);
1619 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1620 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1621 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1622 struct wireless_dev *wdev, u64 cookie);
1624 /* channel switch handling */
1625 void ieee80211_csa_finalize_work(struct work_struct *work);
1626 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1627 struct cfg80211_csa_settings *params);
1629 /* interface handling */
1630 int ieee80211_iface_init(void);
1631 void ieee80211_iface_exit(void);
1632 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1633 unsigned char name_assign_type,
1634 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1635 struct vif_params *params);
1636 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1637 enum nl80211_iftype type);
1638 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1639 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1640 u32 ieee80211_idle_off(struct ieee80211_local *local);
1641 void ieee80211_recalc_idle(struct ieee80211_local *local);
1642 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1644 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1645 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1646 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1647 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1649 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1650 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1653 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1655 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1659 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1660 void ieee80211_tx_pending(unsigned long data);
1661 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1662 struct net_device *dev);
1663 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1664 struct net_device *dev);
1665 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1666 struct net_device *dev,
1668 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1669 struct sk_buff_head *skbs);
1671 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1672 struct sk_buff *skb, u32 info_flags);
1673 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1674 struct ieee80211_supported_band *sband,
1675 int retry_count, int shift, bool send_to_cooked);
1677 void ieee80211_check_fast_xmit(struct sta_info *sta);
1678 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1679 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1680 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1683 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1684 struct ieee80211_sta_ht_cap *ht_cap);
1685 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1686 struct ieee80211_supported_band *sband,
1687 const struct ieee80211_ht_cap *ht_cap_ie,
1688 struct sta_info *sta);
1689 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1690 const u8 *da, u16 tid,
1691 u16 initiator, u16 reason_code);
1692 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1693 enum ieee80211_smps_mode smps, const u8 *da,
1695 void ieee80211_request_smps_ap_work(struct work_struct *work);
1696 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1697 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1698 enum ieee80211_smps_mode smps_mode_new);
1700 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1701 u16 initiator, u16 reason, bool stop);
1702 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1703 u16 initiator, u16 reason, bool stop);
1704 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1705 u8 dialog_token, u16 timeout,
1706 u16 start_seq_num, u16 ba_policy, u16 tid,
1707 u16 buf_size, bool tx, bool auto_seq);
1708 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1709 enum ieee80211_agg_stop_reason reason);
1710 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1711 struct sta_info *sta,
1712 struct ieee80211_mgmt *mgmt, size_t len);
1713 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1714 struct sta_info *sta,
1715 struct ieee80211_mgmt *mgmt,
1717 void ieee80211_process_addba_request(struct ieee80211_local *local,
1718 struct sta_info *sta,
1719 struct ieee80211_mgmt *mgmt,
1722 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1723 enum ieee80211_agg_stop_reason reason);
1724 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1725 enum ieee80211_agg_stop_reason reason);
1726 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1727 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1728 void ieee80211_ba_session_work(struct work_struct *work);
1729 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1730 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1732 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1736 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1737 struct ieee80211_supported_band *sband,
1738 const struct ieee80211_vht_cap *vht_cap_ie,
1739 struct sta_info *sta);
1740 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1741 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1742 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1743 enum ieee80211_sta_rx_bandwidth
1744 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1745 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1746 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1747 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1748 struct ieee80211_mgmt *mgmt);
1749 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1750 struct sta_info *sta, u8 opmode,
1751 enum nl80211_band band);
1752 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1753 struct sta_info *sta, u8 opmode,
1754 enum nl80211_band band);
1755 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1756 struct ieee80211_sta_vht_cap *vht_cap);
1757 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1758 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1760 /* Spectrum management */
1761 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1762 struct ieee80211_mgmt *mgmt,
1765 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1766 * @sdata: the sdata of the interface which has received the frame
1767 * @elems: parsed 802.11 elements received with the frame
1768 * @current_band: indicates the current band
1769 * @sta_flags: contains information about own capabilities and restrictions
1770 * to decide which channel switch announcements can be accepted. Only the
1771 * following subset of &enum ieee80211_sta_flags are evaluated:
1772 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1773 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1774 * %IEEE80211_STA_DISABLE_160MHZ.
1775 * @bssid: the currently connected bssid (for reporting)
1776 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1777 All of them will be filled with if success only.
1778 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1780 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1781 struct ieee802_11_elems *elems,
1782 enum nl80211_band current_band,
1783 u32 sta_flags, u8 *bssid,
1784 struct ieee80211_csa_ie *csa_ie);
1786 /* Suspend/resume and hw reconfiguration */
1787 int ieee80211_reconfig(struct ieee80211_local *local);
1788 void ieee80211_stop_device(struct ieee80211_local *local);
1790 int __ieee80211_suspend(struct ieee80211_hw *hw,
1791 struct cfg80211_wowlan *wowlan);
1793 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1795 struct ieee80211_local *local = hw_to_local(hw);
1797 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1798 !test_bit(SCAN_COMPLETED, &local->scanning),
1799 "%s: resume with hardware scan still in progress\n",
1800 wiphy_name(hw->wiphy));
1802 return ieee80211_reconfig(hw_to_local(hw));
1805 /* utility functions/constants */
1806 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1807 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1808 int rate, int erp, int short_preamble,
1810 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1811 bool bss_notify, bool enable_qos);
1812 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1813 struct sta_info *sta, struct sk_buff *skb);
1815 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1816 struct sk_buff *skb, int tid,
1817 enum nl80211_band band);
1820 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1821 struct sk_buff *skb, int tid,
1822 enum nl80211_band band)
1825 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1829 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1830 struct sk_buff *skb, int tid)
1832 struct ieee80211_chanctx_conf *chanctx_conf;
1835 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1836 if (WARN_ON(!chanctx_conf)) {
1842 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1843 chanctx_conf->def.chan->band);
1847 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1848 struct sk_buff *skb)
1850 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1851 ieee80211_tx_skb_tid(sdata, skb, 7);
1854 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1855 struct ieee802_11_elems *elems,
1856 u64 filter, u32 crc);
1857 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1859 struct ieee802_11_elems *elems)
1861 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1865 extern const int ieee802_1d_to_ac[8];
1867 static inline int ieee80211_ac_from_tid(int tid)
1869 return ieee802_1d_to_ac[tid & 7];
1872 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1873 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1874 void ieee80211_dynamic_ps_timer(unsigned long data);
1875 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1876 struct ieee80211_sub_if_data *sdata,
1878 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1879 struct ieee80211_hdr *hdr);
1880 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1881 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1883 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1884 unsigned long queues,
1885 enum queue_stop_reason reason,
1887 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1888 struct ieee80211_sub_if_data *sdata,
1889 enum queue_stop_reason reason);
1890 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1891 struct ieee80211_sub_if_data *sdata,
1892 enum queue_stop_reason reason);
1893 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1894 unsigned long queues,
1895 enum queue_stop_reason reason,
1897 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1898 enum queue_stop_reason reason,
1900 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1901 enum queue_stop_reason reason,
1903 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1904 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1905 struct sk_buff *skb);
1906 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1907 struct sk_buff_head *skbs);
1908 void ieee80211_flush_queues(struct ieee80211_local *local,
1909 struct ieee80211_sub_if_data *sdata, bool drop);
1910 void __ieee80211_flush_queues(struct ieee80211_local *local,
1911 struct ieee80211_sub_if_data *sdata,
1912 unsigned int queues, bool drop);
1914 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1917 * If quiescing is set, we are racing with __ieee80211_suspend.
1918 * __ieee80211_suspend flushes the workers after setting quiescing,
1919 * and we check quiescing / suspended before enqueing new workers.
1920 * We should abort the worker to avoid the races below.
1922 if (local->quiescing)
1926 * We might already be suspended if the following scenario occurs:
1927 * __ieee80211_suspend Control path
1929 * if (local->quiescing)
1931 * local->quiescing = true;
1932 * flush_workqueue();
1934 * local->suspended = true;
1935 * local->quiescing = false;
1936 * worker starts running...
1938 if (local->suspended)
1944 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
1945 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
1946 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
1947 struct sta_info *sta,
1948 struct txq_info *txq, int tid);
1949 void ieee80211_txq_purge(struct ieee80211_local *local,
1950 struct txq_info *txqi);
1951 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1952 u16 transaction, u16 auth_alg, u16 status,
1953 const u8 *extra, size_t extra_len, const u8 *bssid,
1954 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1956 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1957 const u8 *bssid, u16 stype, u16 reason,
1958 bool send_frame, u8 *frame_buf);
1959 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1961 struct ieee80211_scan_ies *ie_desc,
1962 const u8 *ie, size_t ie_len,
1963 u8 bands_used, u32 *rate_masks,
1964 struct cfg80211_chan_def *chandef);
1965 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1966 const u8 *src, const u8 *dst,
1968 struct ieee80211_channel *chan,
1969 const u8 *ssid, size_t ssid_len,
1970 const u8 *ie, size_t ie_len,
1972 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
1973 const u8 *src, const u8 *dst,
1974 const u8 *ssid, size_t ssid_len,
1975 const u8 *ie, size_t ie_len,
1976 u32 ratemask, bool directed, u32 tx_flags,
1977 struct ieee80211_channel *channel, bool scan);
1979 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1980 struct ieee802_11_elems *elems,
1981 enum nl80211_band band, u32 *basic_rates);
1982 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1983 enum ieee80211_smps_mode smps_mode);
1984 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1985 enum ieee80211_smps_mode smps_mode);
1986 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1987 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
1989 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1990 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1992 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1993 const struct cfg80211_chan_def *chandef,
1994 u16 prot_mode, bool rifs_mode);
1995 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1997 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1998 const struct cfg80211_chan_def *chandef);
1999 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2000 const struct ieee80211_supported_band *sband,
2001 const u8 *srates, int srates_len, u32 *rates);
2002 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2003 struct sk_buff *skb, bool need_basic,
2004 enum nl80211_band band);
2005 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2006 struct sk_buff *skb, bool need_basic,
2007 enum nl80211_band band);
2008 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2010 /* channel management */
2011 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2012 struct cfg80211_chan_def *chandef);
2013 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2014 struct cfg80211_chan_def *chandef);
2015 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2018 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2019 const struct cfg80211_chan_def *chandef,
2020 enum ieee80211_chanctx_mode mode);
2022 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2023 const struct cfg80211_chan_def *chandef,
2024 enum ieee80211_chanctx_mode mode,
2025 bool radar_required);
2027 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2028 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2031 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2032 const struct cfg80211_chan_def *chandef,
2034 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2035 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2036 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2038 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2039 struct ieee80211_chanctx *ctx);
2041 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2042 struct ieee80211_chanctx *chanctx);
2043 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2044 struct ieee80211_chanctx *ctx);
2045 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2047 void ieee80211_dfs_cac_timer(unsigned long data);
2048 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2049 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2050 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2051 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2052 struct cfg80211_csa_settings *csa_settings);
2054 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2055 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2056 const struct ieee80211_cipher_scheme *
2057 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2058 enum nl80211_iftype iftype);
2059 int ieee80211_cs_headroom(struct ieee80211_local *local,
2060 struct cfg80211_crypto_settings *crypto,
2061 enum nl80211_iftype iftype);
2062 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2063 struct ieee80211_sub_if_data *sdata);
2064 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2065 const struct cfg80211_chan_def *chandef,
2066 enum ieee80211_chanctx_mode chanmode,
2068 int ieee80211_max_num_channels(struct ieee80211_local *local);
2069 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2070 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2071 struct ieee80211_chanctx *ctx);
2074 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2075 const u8 *peer, u8 action_code, u8 dialog_token,
2076 u16 status_code, u32 peer_capability,
2077 bool initiator, const u8 *extra_ies,
2078 size_t extra_ies_len);
2079 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2080 const u8 *peer, enum nl80211_tdls_operation oper);
2081 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2082 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2083 const u8 *addr, u8 oper_class,
2084 struct cfg80211_chan_def *chandef);
2085 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2086 struct net_device *dev,
2088 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2089 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2091 extern const struct ethtool_ops ieee80211_ethtool_ops;
2093 #ifdef CONFIG_MAC80211_NOINLINE
2094 #define debug_noinline noinline
2096 #define debug_noinline
2099 #endif /* IEEE80211_I_H */