2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/if_ether.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/workqueue.h>
23 #include <linux/types.h>
24 #include <linux/spinlock.h>
25 #include <linux/etherdevice.h>
26 #include <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
35 struct ieee80211_local;
37 /* Maximum number of broadcast/multicast frames to buffer when some of the
38 * associated stations are using power saving. */
39 #define AP_MAX_BC_BUFFER 128
41 /* Maximum number of frames buffered to all STAs, including multicast frames.
42 * Note: increasing this limit increases the potential memory requirement. Each
43 * frame can be up to about 2 kB long. */
44 #define TOTAL_MAX_TX_BUFFER 512
46 /* Required encryption head and tailroom */
47 #define IEEE80211_ENCRYPT_HEADROOM 8
48 #define IEEE80211_ENCRYPT_TAILROOM 18
50 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
51 * reception of at least three fragmented frames. This limit can be increased
52 * by changing this define, at the cost of slower frame reassembly and
53 * increased memory use (about 2 kB of RAM per entry). */
54 #define IEEE80211_FRAGMENT_MAX 4
56 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
60 * Some APs experience problems when working with U-APSD. Decrease the
61 * probability of that happening by using legacy mode for all ACs but VO.
62 * The AP that caused us trouble was a Cisco 4410N. It ignores our
63 * setting, and always treats non-VO ACs as legacy.
65 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
66 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
68 #define IEEE80211_DEFAULT_MAX_SP_LEN \
69 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
71 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
73 struct ieee80211_fragment_entry {
74 unsigned long first_frag_time;
76 unsigned int rx_queue;
77 unsigned int last_frag;
78 unsigned int extra_len;
79 struct sk_buff_head skb_list;
80 int ccmp; /* Whether fragments were encrypted with CCMP */
81 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
85 struct ieee80211_bss {
86 u32 device_ts_beacon, device_ts_presp;
91 #define IEEE80211_MAX_SUPP_RATES 32
92 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
93 size_t supp_rates_len;
94 struct ieee80211_rate *beacon_rate;
97 * During association, we save an ERP value from a probe response so
98 * that we can feed ERP info to the driver when handling the
99 * association completes. these fields probably won't be up-to-date
100 * otherwise, you probably don't want to use them.
105 /* Keep track of the corruption of the last beacon/probe response. */
108 /* Keep track of what bits of information we have valid info for. */
113 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
114 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
115 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
117 * These are bss flags that are attached to a bss in the
118 * @corrupt_data field of &struct ieee80211_bss.
120 enum ieee80211_bss_corrupt_data_flags {
121 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
122 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
126 * enum ieee80211_valid_data_flags - BSS valid data flags
127 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
128 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
129 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
131 * These are bss flags that are attached to a bss in the
132 * @valid_data field of &struct ieee80211_bss. They show which parts
133 * of the data structure were recieved as a result of an un-corrupted
134 * beacon/probe response.
136 enum ieee80211_bss_valid_data_flags {
137 IEEE80211_BSS_VALID_WMM = BIT(1),
138 IEEE80211_BSS_VALID_RATES = BIT(2),
139 IEEE80211_BSS_VALID_ERP = BIT(3)
142 typedef unsigned __bitwise__ ieee80211_tx_result;
143 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
144 #define TX_DROP ((__force ieee80211_tx_result) 1u)
145 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
147 #define IEEE80211_TX_UNICAST BIT(1)
148 #define IEEE80211_TX_PS_BUFFERED BIT(2)
150 struct ieee80211_tx_data {
152 struct sk_buff_head skbs;
153 struct ieee80211_local *local;
154 struct ieee80211_sub_if_data *sdata;
155 struct sta_info *sta;
156 struct ieee80211_key *key;
157 struct ieee80211_tx_rate rate;
163 typedef unsigned __bitwise__ ieee80211_rx_result;
164 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
165 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
166 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
167 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
170 * enum ieee80211_packet_rx_flags - packet RX flags
171 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
172 * (incl. multicast frames)
173 * @IEEE80211_RX_FRAGMENTED: fragmented frame
174 * @IEEE80211_RX_AMSDU: a-MSDU packet
175 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
176 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
178 * These are per-frame flags that are attached to a frame in the
179 * @rx_flags field of &struct ieee80211_rx_status.
181 enum ieee80211_packet_rx_flags {
182 IEEE80211_RX_RA_MATCH = BIT(1),
183 IEEE80211_RX_FRAGMENTED = BIT(2),
184 IEEE80211_RX_AMSDU = BIT(3),
185 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
186 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
190 * enum ieee80211_rx_flags - RX data flags
192 * @IEEE80211_RX_CMNTR: received on cooked monitor already
193 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
194 * to cfg80211_report_obss_beacon().
196 * These flags are used across handling multiple interfaces
197 * for a single frame.
199 enum ieee80211_rx_flags {
200 IEEE80211_RX_CMNTR = BIT(0),
201 IEEE80211_RX_BEACON_REPORTED = BIT(1),
204 struct ieee80211_rx_data {
206 struct ieee80211_local *local;
207 struct ieee80211_sub_if_data *sdata;
208 struct sta_info *sta;
209 struct ieee80211_key *key;
214 * Index into sequence numbers array, 0..16
215 * since the last (16) is used for non-QoS,
216 * will be 16 on non-QoS frames.
221 * Index into the security IV/PN arrays, 0..16
222 * since the last (16) is used for CCMP-encrypted
223 * management frames, will be set to 16 on mgmt
224 * frames and 0 on non-QoS frames.
234 int head_len, tail_len;
235 struct rcu_head rcu_head;
239 struct rcu_head rcu_head;
245 /* yes, this looks ugly, but guarantees that we can later use
247 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
248 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
249 struct sk_buff_head bc_buf;
250 atomic_t num_sta_ps; /* number of stations in PS mode */
255 struct ieee80211_if_ap {
256 struct beacon_data __rcu *beacon;
257 struct probe_resp __rcu *probe_resp;
259 /* to be used after channel switch. */
260 struct cfg80211_beacon_data *next_beacon;
261 struct list_head vlans;
264 atomic_t num_mcast_sta; /* number of stations receiving multicast */
265 enum ieee80211_smps_mode req_smps, /* requested smps mode */
266 driver_smps_mode; /* smps mode request */
268 struct work_struct request_smps_work;
271 struct ieee80211_if_wds {
272 struct sta_info *sta;
273 u8 remote_addr[ETH_ALEN];
276 struct ieee80211_if_vlan {
277 struct list_head list;
279 /* used for all tx if the VLAN is configured to 4-addr mode */
280 struct sta_info __rcu *sta;
284 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
285 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
286 __u32 fwded_frames; /* Mesh total forwarded frames */
287 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
288 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
289 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
292 #define PREQ_Q_F_START 0x1
293 #define PREQ_Q_F_REFRESH 0x2
294 struct mesh_preq_queue {
295 struct list_head list;
301 #define IEEE80211_ROC_MIN_LEFT 1
303 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
306 struct ieee80211_roc_work {
307 struct list_head list;
308 struct list_head dependents;
310 struct delayed_work work;
312 struct ieee80211_sub_if_data *sdata;
314 struct ieee80211_channel *chan;
316 bool started, abort, hw_begun, notified;
319 unsigned long hw_start_time;
321 u32 duration, req_duration;
322 struct sk_buff *frame;
323 u64 cookie, mgmt_tx_cookie;
324 enum ieee80211_roc_type type;
327 /* flags used in struct ieee80211_if_managed.flags */
328 enum ieee80211_sta_flags {
329 IEEE80211_STA_CONNECTION_POLL = BIT(1),
330 IEEE80211_STA_CONTROL_PORT = BIT(2),
331 IEEE80211_STA_DISABLE_HT = BIT(4),
332 IEEE80211_STA_CSA_RECEIVED = BIT(5),
333 IEEE80211_STA_MFP_ENABLED = BIT(6),
334 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
335 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
336 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
337 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
338 IEEE80211_STA_DISABLE_VHT = BIT(11),
339 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
340 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
341 IEEE80211_STA_DISABLE_WMM = BIT(14),
344 struct ieee80211_mgd_auth_data {
345 struct cfg80211_bss *bss;
346 unsigned long timeout;
348 u16 algorithm, expected_transaction;
350 u8 key[WLAN_KEY_LEN_WEP104];
353 bool timeout_started;
355 u16 sae_trans, sae_status;
360 struct ieee80211_mgd_assoc_data {
361 struct cfg80211_bss *bss;
362 const u8 *supp_rates;
364 unsigned long timeout;
368 u8 prev_bssid[ETH_ALEN];
369 u8 ssid[IEEE80211_MAX_SSID_LEN];
375 bool timeout_started;
379 struct ieee80211_vht_cap ap_vht_cap;
385 struct ieee80211_if_managed {
386 struct timer_list timer;
387 struct timer_list conn_mon_timer;
388 struct timer_list bcn_mon_timer;
389 struct timer_list chswitch_timer;
390 struct work_struct monitor_work;
391 struct work_struct chswitch_work;
392 struct work_struct beacon_connection_loss_work;
393 struct work_struct csa_connection_drop_work;
395 unsigned long beacon_timeout;
396 unsigned long probe_timeout;
397 int probe_send_count;
398 bool nullfunc_failed;
399 bool connection_loss;
401 struct cfg80211_bss *associated;
402 struct ieee80211_mgd_auth_data *auth_data;
403 struct ieee80211_mgd_assoc_data *assoc_data;
409 bool powersave; /* powersave requested for this iface */
410 bool broken_ap; /* AP is broken -- turn off powersave */
413 enum ieee80211_smps_mode req_smps, /* requested smps mode */
414 driver_smps_mode; /* smps mode request */
416 struct work_struct request_smps_work;
420 bool beacon_crc_valid;
424 bool status_received;
428 IEEE80211_MFP_DISABLED,
429 IEEE80211_MFP_OPTIONAL,
430 IEEE80211_MFP_REQUIRED
431 } mfp; /* management frame protection */
434 * Bitmask of enabled u-apsd queues,
435 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
438 unsigned int uapsd_queues;
441 * Maximum number of buffered frames AP can deliver during a
442 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
443 * Needs a new association to take effect.
445 unsigned int uapsd_max_sp_len;
447 int wmm_last_param_set;
453 /* Signal strength from the last Beacon frame in the current BSS. */
454 int last_beacon_signal;
457 * Weighted average of the signal strength from Beacon frames in the
458 * current BSS. This is in units of 1/16 of the signal unit to maintain
459 * accuracy and to speed up calculations, i.e., the value need to be
460 * divided by 16 to get the actual value.
462 int ave_beacon_signal;
465 * Number of Beacon frames used in ave_beacon_signal. This can be used
466 * to avoid generating less reliable cqm events that would be based
467 * only on couple of received frames.
469 unsigned int count_beacon_signal;
472 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
473 * that triggered a cqm event. 0 indicates that no event has been
474 * generated for the current association.
476 int last_cqm_event_signal;
479 * State variables for keeping track of RSSI of the AP currently
480 * connected to and informing driver when RSSI has gone
481 * below/above a certain threshold.
483 int rssi_min_thold, rssi_max_thold;
484 int last_ave_beacon_signal;
486 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
487 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
488 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
489 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
492 struct ieee80211_if_ibss {
493 struct timer_list timer;
494 struct work_struct csa_connection_drop_work;
496 unsigned long last_scan_completed;
505 bool userspace_handles_dfs;
507 u8 bssid[ETH_ALEN] __aligned(2);
508 u8 ssid[IEEE80211_MAX_SSID_LEN];
511 struct cfg80211_chan_def chandef;
513 unsigned long ibss_join_req;
514 /* probe response/beacon for IBSS */
515 struct beacon_data __rcu *presp;
517 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
518 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
520 spinlock_t incomplete_lock;
521 struct list_head incomplete_stations;
524 IEEE80211_IBSS_MLME_SEARCH,
525 IEEE80211_IBSS_MLME_JOINED,
530 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
532 * these declarations define the interface, which enables
533 * vendor-specific mesh synchronization
536 struct ieee802_11_elems;
537 struct ieee80211_mesh_sync_ops {
538 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
540 struct ieee80211_mgmt *mgmt,
541 struct ieee802_11_elems *elems,
542 struct ieee80211_rx_status *rx_status);
543 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
544 /* add other framework functions here */
547 struct mesh_csa_settings {
548 struct rcu_head rcu_head;
549 struct cfg80211_csa_settings settings;
552 struct ieee80211_if_mesh {
553 struct timer_list housekeeping_timer;
554 struct timer_list mesh_path_timer;
555 struct timer_list mesh_path_root_timer;
557 unsigned long wrkq_flags;
558 unsigned long mbss_changed;
560 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
562 /* Active Path Selection Protocol Identifier */
564 /* Active Path Selection Metric Identifier */
566 /* Congestion Control Mode Identifier */
568 /* Synchronization Protocol Identifier */
570 /* Authentication Protocol Identifier */
572 /* Local mesh Sequence Number */
574 /* Last used PREQ ID */
577 /* Timestamp of last SN update */
578 unsigned long last_sn_update;
579 /* Time when it's ok to send next PERR */
580 unsigned long next_perr;
581 /* Timestamp of last PREQ sent */
582 unsigned long last_preq;
583 struct mesh_rmc *rmc;
584 spinlock_t mesh_preq_queue_lock;
585 struct mesh_preq_queue preq_queue;
587 struct mesh_stats mshstats;
588 struct mesh_config mshcfg;
589 atomic_t estab_plinks;
591 bool accepting_plinks;
593 struct beacon_data __rcu *beacon;
597 IEEE80211_MESH_SEC_NONE = 0x0,
598 IEEE80211_MESH_SEC_AUTHED = 0x1,
599 IEEE80211_MESH_SEC_SECURED = 0x2,
602 /* Extensible Synchronization Framework */
603 const struct ieee80211_mesh_sync_ops *sync_ops;
604 s64 sync_offset_clockdrift_max;
605 spinlock_t sync_offset_lock;
607 /* mesh power save */
608 enum nl80211_mesh_power_mode nonpeer_pm;
609 int ps_peers_light_sleep;
610 int ps_peers_deep_sleep;
612 /* Channel Switching Support */
613 struct mesh_csa_settings __rcu *csa;
619 #ifdef CONFIG_MAC80211_MESH
620 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
621 do { (msh)->mshstats.name++; } while (0)
623 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
628 * enum ieee80211_sub_if_data_flags - virtual interface flags
630 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
631 * @IEEE80211_SDATA_PROMISC: interface is promisc
632 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
633 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
634 * associated stations and deliver multicast frames both
635 * back to wireless media and to the local net stack.
636 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
637 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
639 enum ieee80211_sub_if_data_flags {
640 IEEE80211_SDATA_ALLMULTI = BIT(0),
641 IEEE80211_SDATA_PROMISC = BIT(1),
642 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
643 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
644 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
645 IEEE80211_SDATA_IN_DRIVER = BIT(5),
649 * enum ieee80211_sdata_state_bits - virtual interface state bits
650 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
651 * mirrors netif_running() but is separate for interface type
652 * change handling while the interface is up
653 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
654 * mode, so queues are stopped
655 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
656 * to offchannel, reset when offchannel returns
658 enum ieee80211_sdata_state_bits {
660 SDATA_STATE_OFFCHANNEL,
661 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
665 * enum ieee80211_chanctx_mode - channel context configuration mode
667 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
668 * multiple interfaces
669 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
670 * only by a single interface. This can be used for example for
671 * non-fixed channel IBSS.
673 enum ieee80211_chanctx_mode {
674 IEEE80211_CHANCTX_SHARED,
675 IEEE80211_CHANCTX_EXCLUSIVE
678 struct ieee80211_chanctx {
679 struct list_head list;
680 struct rcu_head rcu_head;
682 enum ieee80211_chanctx_mode mode;
686 struct ieee80211_chanctx_conf conf;
689 struct ieee80211_sub_if_data {
690 struct list_head list;
692 struct wireless_dev wdev;
695 struct list_head key_list;
697 /* count for keys needing tailroom space allocation */
698 int crypto_tx_tailroom_needed_cnt;
699 int crypto_tx_tailroom_pending_dec;
700 struct delayed_work dec_tailroom_needed_wk;
702 struct net_device *dev;
703 struct ieee80211_local *local;
709 int drop_unencrypted;
713 /* Fragment table for host-based reassembly */
714 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
715 unsigned int fragment_next;
717 /* TID bitmap for NoAck policy */
720 /* bit field of ACM bits (BIT(802.1D tag)) */
723 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
724 struct ieee80211_key __rcu *default_unicast_key;
725 struct ieee80211_key __rcu *default_multicast_key;
726 struct ieee80211_key __rcu *default_mgmt_key;
729 __be16 control_port_protocol;
730 bool control_port_no_encrypt;
732 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
734 struct work_struct csa_finalize_work;
735 int csa_counter_offset_beacon;
736 int csa_counter_offset_presp;
737 bool csa_radar_required;
739 /* used to reconfigure hardware SM PS */
740 struct work_struct recalc_smps;
742 struct work_struct work;
743 struct sk_buff_head skb_queue;
746 enum ieee80211_smps_mode smps_mode;
748 int user_power_level; /* in dBm */
749 int ap_power_level; /* in dBm */
752 struct delayed_work dfs_cac_timer_work;
755 * AP this belongs to: self in AP mode and
756 * corresponding AP in VLAN mode, NULL for
757 * all others (might be needed later in IBSS)
759 struct ieee80211_if_ap *bss;
761 /* bitmap of allowed (non-MCS) rate indexes for rate control */
762 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
764 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
765 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
768 struct ieee80211_if_ap ap;
769 struct ieee80211_if_wds wds;
770 struct ieee80211_if_vlan vlan;
771 struct ieee80211_if_managed mgd;
772 struct ieee80211_if_ibss ibss;
773 struct ieee80211_if_mesh mesh;
777 spinlock_t cleanup_stations_lock;
778 struct list_head cleanup_stations;
779 struct work_struct cleanup_stations_wk;
781 #ifdef CONFIG_MAC80211_DEBUGFS
783 struct dentry *subdir_stations;
784 struct dentry *default_unicast_key;
785 struct dentry *default_multicast_key;
786 struct dentry *default_mgmt_key;
790 /* must be last, dynamically sized area in this! */
791 struct ieee80211_vif vif;
795 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
797 return container_of(p, struct ieee80211_sub_if_data, vif);
800 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
801 __acquires(&sdata->wdev.mtx)
803 mutex_lock(&sdata->wdev.mtx);
804 __acquire(&sdata->wdev.mtx);
807 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
808 __releases(&sdata->wdev.mtx)
810 mutex_unlock(&sdata->wdev.mtx);
811 __release(&sdata->wdev.mtx);
815 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
817 lockdep_assert_held(&sdata->wdev.mtx);
820 static inline enum ieee80211_band
821 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
823 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
824 struct ieee80211_chanctx_conf *chanctx_conf;
827 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
828 if (!WARN_ON(!chanctx_conf))
829 band = chanctx_conf->def.chan->band;
836 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
838 switch (chandef->width) {
839 case NL80211_CHAN_WIDTH_5:
841 case NL80211_CHAN_WIDTH_10:
849 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
851 struct ieee80211_chanctx_conf *chanctx_conf;
855 chanctx_conf = rcu_dereference(vif->chanctx_conf);
857 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
863 enum sdata_queue_type {
864 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
865 IEEE80211_SDATA_QUEUE_AGG_START = 1,
866 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
870 IEEE80211_RX_MSG = 1,
871 IEEE80211_TX_STATUS_MSG = 2,
874 enum queue_stop_reason {
875 IEEE80211_QUEUE_STOP_REASON_DRIVER,
876 IEEE80211_QUEUE_STOP_REASON_PS,
877 IEEE80211_QUEUE_STOP_REASON_CSA,
878 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
879 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
880 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
881 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
882 IEEE80211_QUEUE_STOP_REASON_FLUSH,
885 #ifdef CONFIG_MAC80211_LEDS
886 struct tpt_led_trigger {
887 struct led_trigger trig;
889 const struct ieee80211_tpt_blink *blink_table;
890 unsigned int blink_table_len;
891 struct timer_list timer;
892 unsigned long prev_traffic;
893 unsigned long tx_bytes, rx_bytes;
894 unsigned int active, want;
900 * mac80211 scan flags - currently active scan mode
902 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
903 * well be on the operating channel
904 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
905 * determine if we are on the operating channel or not
906 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
907 * channel. This should not interrupt normal traffic.
908 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
909 * that the scan completed.
910 * @SCAN_ABORTED: Set for our scan work function when the driver reported
911 * a scan complete for an aborted scan.
912 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
918 SCAN_ONCHANNEL_SCANNING,
925 * enum mac80211_scan_state - scan state machine states
927 * @SCAN_DECISION: Main entry point to the scan state machine, this state
928 * determines if we should keep on scanning or switch back to the
930 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
931 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
932 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
934 * @SCAN_RESUME: Resume the scan and scan the next channel
935 * @SCAN_ABORT: Abort the scan and go back to operating channel
937 enum mac80211_scan_state {
946 struct ieee80211_local {
947 /* embed the driver visible part.
948 * don't cast (use the static inlines below), but we keep
949 * it first anyway so they become a no-op */
950 struct ieee80211_hw hw;
952 const struct ieee80211_ops *ops;
955 * private workqueue to mac80211. mac80211 makes this accessible
956 * via ieee80211_queue_work()
958 struct workqueue_struct *workqueue;
960 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
961 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
962 spinlock_t queue_stop_reason_lock;
965 int monitors, cooked_mntrs;
966 /* number of interfaces with corresponding FIF_ flags */
967 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
970 unsigned int filter_flags; /* FIF_* */
972 bool wiphy_ciphers_allocated;
976 /* protects the aggregated multicast list and filter calls */
977 spinlock_t filter_lock;
979 /* used for uploading changed mc list */
980 struct work_struct reconfig_filter;
982 /* aggregated multicast list */
983 struct netdev_hw_addr_list mc_list;
985 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
988 * suspended is true if we finished all the suspend _and_ we have
989 * not yet come up from resume. This is to be used by mac80211
990 * to ensure driver sanity during suspend and mac80211's own
991 * sanity. It can eventually be used for WoW as well.
996 * Resuming is true while suspended, but when we're reprogramming the
997 * hardware -- at that time it's allowed to use ieee80211_queue_work()
998 * again even though some other parts of the stack are still suspended
999 * and we still drop received frames to avoid waking the stack.
1004 * quiescing is true during the suspend process _only_ to
1005 * ease timer cancelling etc.
1009 /* device is started */
1012 /* device is during a HW reconfig */
1015 /* wowlan is enabled -- don't reconfig on resume */
1018 /* DFS/radar detection is enabled */
1019 bool radar_detect_enabled;
1020 struct work_struct radar_detected_work;
1022 /* number of RX chains the hardware has */
1025 int tx_headroom; /* required headroom for hardware/radiotap */
1027 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1028 * added to skb_queue will be processed, but frames in
1029 * skb_queue_unreliable may be dropped if the total length of these
1030 * queues increases over the limit. */
1031 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1032 struct tasklet_struct tasklet;
1033 struct sk_buff_head skb_queue;
1034 struct sk_buff_head skb_queue_unreliable;
1036 spinlock_t rx_path_lock;
1040 * The mutex only protects the list, hash table and
1041 * counter, reads are done with RCU.
1043 struct mutex sta_mtx;
1044 spinlock_t tim_lock;
1045 unsigned long num_sta;
1046 struct list_head sta_list;
1047 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1048 struct timer_list sta_cleanup;
1051 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1052 struct tasklet_struct tx_pending_tasklet;
1054 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1056 /* number of interfaces with corresponding IFF_ flags */
1057 atomic_t iff_allmultis, iff_promiscs;
1059 struct rate_control_ref *rate_ctrl;
1061 struct crypto_cipher *wep_tx_tfm;
1062 struct crypto_cipher *wep_rx_tfm;
1066 struct list_head interfaces;
1067 struct mutex iflist_mtx;
1070 * Key mutex, protects sdata's key_list and sta_info's
1071 * key pointers (write access, they're RCU.)
1073 struct mutex key_mtx;
1075 /* mutex for scan and work locking */
1078 /* Scanning and BSS list */
1079 unsigned long scanning;
1080 struct cfg80211_ssid scan_ssid;
1081 struct cfg80211_scan_request *int_scan_req;
1082 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1083 struct cfg80211_chan_def scan_chandef;
1084 enum ieee80211_band hw_scan_band;
1085 int scan_channel_idx;
1087 int hw_scan_ies_bufsize;
1089 struct work_struct sched_scan_stopped_work;
1090 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1092 unsigned long leave_oper_channel_time;
1093 enum mac80211_scan_state next_scan_state;
1094 struct delayed_work scan_work;
1095 struct ieee80211_sub_if_data __rcu *scan_sdata;
1096 struct cfg80211_chan_def csa_chandef;
1097 /* For backward compatibility only -- do not use */
1098 struct cfg80211_chan_def _oper_chandef;
1100 /* Temporary remain-on-channel for off-channel operations */
1101 struct ieee80211_channel *tmp_channel;
1103 /* channel contexts */
1104 struct list_head chanctx_list;
1105 struct mutex chanctx_mtx;
1108 /* dot11CountersTable */
1109 u32 dot11TransmittedFragmentCount;
1110 u32 dot11MulticastTransmittedFrameCount;
1111 u32 dot11FailedCount;
1112 u32 dot11RetryCount;
1113 u32 dot11MultipleRetryCount;
1114 u32 dot11FrameDuplicateCount;
1115 u32 dot11ReceivedFragmentCount;
1116 u32 dot11MulticastReceivedFrameCount;
1117 u32 dot11TransmittedFrameCount;
1119 #ifdef CONFIG_MAC80211_LEDS
1120 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1121 struct tpt_led_trigger *tpt_led_trigger;
1122 char tx_led_name[32], rx_led_name[32],
1123 assoc_led_name[32], radio_led_name[32];
1126 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1127 /* TX/RX handler statistics */
1128 unsigned int tx_handlers_drop;
1129 unsigned int tx_handlers_queued;
1130 unsigned int tx_handlers_drop_unencrypted;
1131 unsigned int tx_handlers_drop_fragment;
1132 unsigned int tx_handlers_drop_wep;
1133 unsigned int tx_handlers_drop_not_assoc;
1134 unsigned int tx_handlers_drop_unauth_port;
1135 unsigned int rx_handlers_drop;
1136 unsigned int rx_handlers_queued;
1137 unsigned int rx_handlers_drop_nullfunc;
1138 unsigned int rx_handlers_drop_defrag;
1139 unsigned int rx_handlers_drop_short;
1140 unsigned int tx_expand_skb_head;
1141 unsigned int tx_expand_skb_head_cloned;
1142 unsigned int rx_expand_skb_head;
1143 unsigned int rx_expand_skb_head2;
1144 unsigned int rx_handlers_fragments;
1145 unsigned int tx_status_drop;
1146 #define I802_DEBUG_INC(c) (c)++
1147 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1148 #define I802_DEBUG_INC(c) do { } while (0)
1149 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1152 int total_ps_buffered; /* total number of all buffered unicast and
1153 * multicast packets for power saving stations
1157 bool offchannel_ps_enabled;
1159 * PS can only be enabled when we have exactly one managed
1160 * interface (and monitors) in PS, this then points there.
1162 struct ieee80211_sub_if_data *ps_sdata;
1163 struct work_struct dynamic_ps_enable_work;
1164 struct work_struct dynamic_ps_disable_work;
1165 struct timer_list dynamic_ps_timer;
1166 struct notifier_block network_latency_notifier;
1167 struct notifier_block ifa_notifier;
1168 struct notifier_block ifa6_notifier;
1171 * The dynamic ps timeout configured from user space via WEXT -
1172 * this will override whatever chosen by mac80211 internally.
1174 int dynamic_ps_forced_timeout;
1176 int user_power_level; /* in dBm, for all interfaces */
1178 enum ieee80211_smps_mode smps_mode;
1180 struct work_struct restart_work;
1182 #ifdef CONFIG_MAC80211_DEBUGFS
1183 struct local_debugfsdentries {
1184 struct dentry *rcdir;
1185 struct dentry *keys;
1190 * Remain-on-channel support
1192 struct list_head roc_list;
1193 struct work_struct hw_roc_start, hw_roc_done;
1194 unsigned long hw_roc_start_time;
1195 u64 roc_cookie_counter;
1197 struct idr ack_status_frames;
1198 spinlock_t ack_status_lock;
1200 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1202 /* virtual monitor interface */
1203 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1204 struct cfg80211_chan_def monitor_chandef;
1207 static inline struct ieee80211_sub_if_data *
1208 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1210 return netdev_priv(dev);
1213 static inline struct ieee80211_sub_if_data *
1214 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1216 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1219 /* this struct represents 802.11n's RA/TID combination */
1220 struct ieee80211_ra_tid {
1225 /* this struct holds the value parsing from channel switch IE */
1226 struct ieee80211_csa_ie {
1227 struct cfg80211_chan_def chandef;
1233 /* Parsed Information Elements */
1234 struct ieee802_11_elems {
1238 /* pointers to IEs */
1240 const u8 *supp_rates;
1241 const u8 *ds_params;
1242 const struct ieee80211_tim_ie *tim;
1243 const u8 *challenge;
1246 const u8 *ext_supp_rates;
1248 const u8 *wmm_param;
1249 const struct ieee80211_ht_cap *ht_cap_elem;
1250 const struct ieee80211_ht_operation *ht_operation;
1251 const struct ieee80211_vht_cap *vht_cap_elem;
1252 const struct ieee80211_vht_operation *vht_operation;
1253 const struct ieee80211_meshconf_ie *mesh_config;
1256 const __le16 *awake_window;
1260 const struct ieee80211_rann_ie *rann;
1261 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1262 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1263 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1264 const u8 *country_elem;
1265 const u8 *pwr_constr_elem;
1266 const struct ieee80211_timeout_interval_ie *timeout_int;
1267 const u8 *opmode_notif;
1268 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1269 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1271 /* length of them, respectively */
1277 u8 ext_supp_rates_len;
1285 u8 country_elem_len;
1287 /* whether a parse error occurred while retrieving these elements */
1291 static inline struct ieee80211_local *hw_to_local(
1292 struct ieee80211_hw *hw)
1294 return container_of(hw, struct ieee80211_local, hw);
1298 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1300 return ether_addr_equal(raddr, addr) ||
1301 is_broadcast_ether_addr(raddr);
1305 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1307 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1308 status->flag & RX_FLAG_MACTIME_END);
1309 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1312 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1313 struct ieee80211_rx_status *status,
1314 unsigned int mpdu_len,
1315 unsigned int mpdu_offset);
1316 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1317 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1318 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1320 void ieee80211_configure_filter(struct ieee80211_local *local);
1321 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1324 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1325 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1326 struct cfg80211_auth_request *req);
1327 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1328 struct cfg80211_assoc_request *req);
1329 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1330 struct cfg80211_deauth_request *req);
1331 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1332 struct cfg80211_disassoc_request *req);
1333 void ieee80211_send_pspoll(struct ieee80211_local *local,
1334 struct ieee80211_sub_if_data *sdata);
1335 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1336 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1337 int ieee80211_max_network_latency(struct notifier_block *nb,
1338 unsigned long data, void *dummy);
1339 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1340 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1341 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1342 struct sk_buff *skb);
1343 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1344 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1345 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1346 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1347 __le16 fc, bool acked);
1348 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1351 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1352 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1353 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1354 const u8 *bssid, const u8 *addr, u32 supp_rates);
1355 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1356 struct cfg80211_ibss_params *params);
1357 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1358 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1359 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1360 struct sk_buff *skb);
1361 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1362 struct cfg80211_csa_settings *csa_settings);
1363 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1364 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1367 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1368 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1369 struct sk_buff *skb);
1370 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1371 struct cfg80211_csa_settings *csa_settings,
1373 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1375 /* scan/BSS handling */
1376 void ieee80211_scan_work(struct work_struct *work);
1377 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1378 const u8 *ssid, u8 ssid_len,
1379 struct ieee80211_channel *chan,
1380 enum nl80211_bss_scan_width scan_width);
1381 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1382 struct cfg80211_scan_request *req);
1383 void ieee80211_scan_cancel(struct ieee80211_local *local);
1384 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1385 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1387 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1388 struct ieee80211_bss *
1389 ieee80211_bss_info_update(struct ieee80211_local *local,
1390 struct ieee80211_rx_status *rx_status,
1391 struct ieee80211_mgmt *mgmt,
1393 struct ieee802_11_elems *elems,
1394 struct ieee80211_channel *channel);
1395 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1396 struct ieee80211_bss *bss);
1398 /* scheduled scan handling */
1399 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1400 struct cfg80211_sched_scan_request *req);
1401 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1402 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1404 /* off-channel helpers */
1405 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1406 void ieee80211_offchannel_return(struct ieee80211_local *local);
1407 void ieee80211_roc_setup(struct ieee80211_local *local);
1408 void ieee80211_start_next_roc(struct ieee80211_local *local);
1409 void ieee80211_roc_purge(struct ieee80211_local *local,
1410 struct ieee80211_sub_if_data *sdata);
1411 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1412 void ieee80211_sw_roc_work(struct work_struct *work);
1413 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1415 /* channel switch handling */
1416 void ieee80211_csa_finalize_work(struct work_struct *work);
1418 /* interface handling */
1419 int ieee80211_iface_init(void);
1420 void ieee80211_iface_exit(void);
1421 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1422 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1423 struct vif_params *params);
1424 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1425 enum nl80211_iftype type);
1426 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1427 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1428 u32 ieee80211_idle_off(struct ieee80211_local *local);
1429 void ieee80211_recalc_idle(struct ieee80211_local *local);
1430 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1432 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1433 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1434 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1435 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1437 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1438 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1439 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1440 struct cfg80211_beacon_data *params);
1442 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1444 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1448 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1449 void ieee80211_tx_pending(unsigned long data);
1450 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1451 struct net_device *dev);
1452 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1453 struct net_device *dev);
1454 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1455 struct sk_buff_head *skbs);
1458 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1459 struct ieee80211_sta_ht_cap *ht_cap);
1460 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1461 struct ieee80211_supported_band *sband,
1462 const struct ieee80211_ht_cap *ht_cap_ie,
1463 struct sta_info *sta);
1464 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1465 const u8 *da, u16 tid,
1466 u16 initiator, u16 reason_code);
1467 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1468 enum ieee80211_smps_mode smps, const u8 *da,
1470 void ieee80211_request_smps_ap_work(struct work_struct *work);
1471 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1472 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1473 enum ieee80211_smps_mode smps_mode_new);
1475 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1476 u16 initiator, u16 reason, bool stop);
1477 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1478 u16 initiator, u16 reason, bool stop);
1479 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1480 enum ieee80211_agg_stop_reason reason);
1481 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1482 struct sta_info *sta,
1483 struct ieee80211_mgmt *mgmt, size_t len);
1484 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1485 struct sta_info *sta,
1486 struct ieee80211_mgmt *mgmt,
1488 void ieee80211_process_addba_request(struct ieee80211_local *local,
1489 struct sta_info *sta,
1490 struct ieee80211_mgmt *mgmt,
1493 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1494 enum ieee80211_agg_stop_reason reason);
1495 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1496 enum ieee80211_agg_stop_reason reason);
1497 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1498 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1499 void ieee80211_ba_session_work(struct work_struct *work);
1500 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1501 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1503 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1507 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1508 struct ieee80211_supported_band *sband,
1509 const struct ieee80211_vht_cap *vht_cap_ie,
1510 struct sta_info *sta);
1511 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1512 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1513 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1514 struct sta_info *sta, u8 opmode,
1515 enum ieee80211_band band, bool nss_only);
1516 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1517 struct ieee80211_sta_vht_cap *vht_cap);
1519 /* Spectrum management */
1520 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1521 struct ieee80211_mgmt *mgmt,
1524 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1525 * @sdata: the sdata of the interface which has received the frame
1526 * @elems: parsed 802.11 elements received with the frame
1527 * @beacon: indicates if the frame was a beacon or probe response
1528 * @current_band: indicates the current band
1529 * @sta_flags: contains information about own capabilities and restrictions
1530 * to decide which channel switch announcements can be accepted. Only the
1531 * following subset of &enum ieee80211_sta_flags are evaluated:
1532 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1533 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1534 * %IEEE80211_STA_DISABLE_160MHZ.
1535 * @bssid: the currently connected bssid (for reporting)
1536 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1537 All of them will be filled with if success only.
1538 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1540 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1541 struct ieee802_11_elems *elems, bool beacon,
1542 enum ieee80211_band current_band,
1543 u32 sta_flags, u8 *bssid,
1544 struct ieee80211_csa_ie *csa_ie);
1546 /* Suspend/resume and hw reconfiguration */
1547 int ieee80211_reconfig(struct ieee80211_local *local);
1548 void ieee80211_stop_device(struct ieee80211_local *local);
1550 int __ieee80211_suspend(struct ieee80211_hw *hw,
1551 struct cfg80211_wowlan *wowlan);
1553 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1555 struct ieee80211_local *local = hw_to_local(hw);
1557 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1558 "%s: resume with hardware scan still in progress\n",
1559 wiphy_name(hw->wiphy));
1561 return ieee80211_reconfig(hw_to_local(hw));
1564 /* utility functions/constants */
1565 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1566 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1567 enum nl80211_iftype type);
1568 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1569 int rate, int erp, int short_preamble,
1571 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1572 struct ieee80211_hdr *hdr, const u8 *tsc,
1574 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1576 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1577 enum ieee80211_band band);
1579 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1580 struct sk_buff *skb, int tid,
1581 enum ieee80211_band band);
1584 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1585 struct sk_buff *skb, int tid,
1586 enum ieee80211_band band)
1589 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1593 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1594 struct sk_buff *skb, int tid)
1596 struct ieee80211_chanctx_conf *chanctx_conf;
1599 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1600 if (WARN_ON(!chanctx_conf)) {
1606 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1607 chanctx_conf->def.chan->band);
1611 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1612 struct sk_buff *skb)
1614 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1615 ieee80211_tx_skb_tid(sdata, skb, 7);
1618 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1619 struct ieee802_11_elems *elems,
1620 u64 filter, u32 crc);
1621 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1623 struct ieee802_11_elems *elems)
1625 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1628 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1629 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1630 void ieee80211_dynamic_ps_timer(unsigned long data);
1631 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1632 struct ieee80211_sub_if_data *sdata,
1634 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1635 struct ieee80211_hdr *hdr);
1636 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1637 struct ieee80211_hdr *hdr, bool ack);
1639 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1640 unsigned long queues,
1641 enum queue_stop_reason reason);
1642 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1643 unsigned long queues,
1644 enum queue_stop_reason reason);
1645 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1646 enum queue_stop_reason reason);
1647 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1648 enum queue_stop_reason reason);
1649 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1650 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1651 struct sk_buff *skb);
1652 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1653 struct sk_buff_head *skbs,
1654 void (*fn)(void *data), void *data);
1655 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1656 struct sk_buff_head *skbs)
1658 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1660 void ieee80211_flush_queues(struct ieee80211_local *local,
1661 struct ieee80211_sub_if_data *sdata);
1663 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1664 u16 transaction, u16 auth_alg, u16 status,
1665 const u8 *extra, size_t extra_len, const u8 *bssid,
1666 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1668 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1669 const u8 *bssid, u16 stype, u16 reason,
1670 bool send_frame, u8 *frame_buf);
1671 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1672 size_t buffer_len, const u8 *ie, size_t ie_len,
1673 enum ieee80211_band band, u32 rate_mask,
1674 struct cfg80211_chan_def *chandef);
1675 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1676 u8 *dst, u32 ratemask,
1677 struct ieee80211_channel *chan,
1678 const u8 *ssid, size_t ssid_len,
1679 const u8 *ie, size_t ie_len,
1681 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1682 const u8 *ssid, size_t ssid_len,
1683 const u8 *ie, size_t ie_len,
1684 u32 ratemask, bool directed, u32 tx_flags,
1685 struct ieee80211_channel *channel, bool scan);
1687 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1688 struct ieee802_11_elems *elems,
1689 enum ieee80211_band band, u32 *basic_rates);
1690 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
1691 enum ieee80211_smps_mode smps_mode);
1692 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
1693 enum ieee80211_smps_mode smps_mode);
1694 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1696 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1697 const u8 *ids, int n_ids, size_t offset);
1698 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1699 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1701 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1702 const struct cfg80211_chan_def *chandef,
1704 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1706 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1707 const struct ieee80211_supported_band *sband,
1708 const u8 *srates, int srates_len, u32 *rates);
1709 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1710 struct sk_buff *skb, bool need_basic,
1711 enum ieee80211_band band);
1712 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1713 struct sk_buff *skb, bool need_basic,
1714 enum ieee80211_band band);
1716 /* channel management */
1717 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1718 const struct ieee80211_ht_operation *ht_oper,
1719 struct cfg80211_chan_def *chandef);
1720 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1723 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1724 const struct cfg80211_chan_def *chandef,
1725 enum ieee80211_chanctx_mode mode);
1727 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1728 const struct cfg80211_chan_def *chandef,
1730 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1732 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1733 const struct cfg80211_chan_def *chandef,
1735 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1736 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1737 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1740 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1741 struct ieee80211_chanctx *chanctx);
1742 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1743 struct ieee80211_chanctx *chanctx);
1745 void ieee80211_dfs_cac_timer(unsigned long data);
1746 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1747 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1748 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1749 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
1750 struct cfg80211_csa_settings *csa_settings);
1752 #ifdef CONFIG_MAC80211_NOINLINE
1753 #define debug_noinline noinline
1755 #define debug_noinline
1758 #endif /* IEEE80211_I_H */