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 */
267 struct ieee80211_if_wds {
268 struct sta_info *sta;
269 u8 remote_addr[ETH_ALEN];
272 struct ieee80211_if_vlan {
273 struct list_head list;
275 /* used for all tx if the VLAN is configured to 4-addr mode */
276 struct sta_info __rcu *sta;
280 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
281 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
282 __u32 fwded_frames; /* Mesh total forwarded frames */
283 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
284 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
285 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
288 #define PREQ_Q_F_START 0x1
289 #define PREQ_Q_F_REFRESH 0x2
290 struct mesh_preq_queue {
291 struct list_head list;
297 #define IEEE80211_ROC_MIN_LEFT 1
299 #define IEEE80211_ROC_MIN_LEFT (HZ/100)
302 struct ieee80211_roc_work {
303 struct list_head list;
304 struct list_head dependents;
306 struct delayed_work work;
308 struct ieee80211_sub_if_data *sdata;
310 struct ieee80211_channel *chan;
312 bool started, abort, hw_begun, notified;
315 unsigned long hw_start_time;
317 u32 duration, req_duration;
318 struct sk_buff *frame;
319 u64 cookie, mgmt_tx_cookie;
320 enum ieee80211_roc_type type;
323 /* flags used in struct ieee80211_if_managed.flags */
324 enum ieee80211_sta_flags {
325 IEEE80211_STA_BEACON_POLL = BIT(0),
326 IEEE80211_STA_CONNECTION_POLL = BIT(1),
327 IEEE80211_STA_CONTROL_PORT = BIT(2),
328 IEEE80211_STA_DISABLE_HT = BIT(4),
329 IEEE80211_STA_CSA_RECEIVED = BIT(5),
330 IEEE80211_STA_MFP_ENABLED = BIT(6),
331 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
332 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
333 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
334 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
335 IEEE80211_STA_DISABLE_VHT = BIT(11),
336 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
337 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
340 struct ieee80211_mgd_auth_data {
341 struct cfg80211_bss *bss;
342 unsigned long timeout;
344 u16 algorithm, expected_transaction;
346 u8 key[WLAN_KEY_LEN_WEP104];
349 bool timeout_started;
351 u16 sae_trans, sae_status;
356 struct ieee80211_mgd_assoc_data {
357 struct cfg80211_bss *bss;
358 const u8 *supp_rates;
360 unsigned long timeout;
364 u8 prev_bssid[ETH_ALEN];
365 u8 ssid[IEEE80211_MAX_SSID_LEN];
371 bool timeout_started;
375 struct ieee80211_vht_cap ap_vht_cap;
381 struct ieee80211_if_managed {
382 struct timer_list timer;
383 struct timer_list conn_mon_timer;
384 struct timer_list bcn_mon_timer;
385 struct timer_list chswitch_timer;
386 struct work_struct monitor_work;
387 struct work_struct chswitch_work;
388 struct work_struct beacon_connection_loss_work;
389 struct work_struct csa_connection_drop_work;
391 unsigned long beacon_timeout;
392 unsigned long probe_timeout;
393 int probe_send_count;
394 bool nullfunc_failed;
395 bool connection_loss;
397 struct cfg80211_bss *associated;
398 struct ieee80211_mgd_auth_data *auth_data;
399 struct ieee80211_mgd_assoc_data *assoc_data;
405 bool powersave; /* powersave requested for this iface */
406 bool broken_ap; /* AP is broken -- turn off powersave */
409 enum ieee80211_smps_mode req_smps, /* requested smps mode */
410 driver_smps_mode; /* smps mode request */
412 struct work_struct request_smps_work;
416 bool beacon_crc_valid;
420 bool status_received;
424 IEEE80211_MFP_DISABLED,
425 IEEE80211_MFP_OPTIONAL,
426 IEEE80211_MFP_REQUIRED
427 } mfp; /* management frame protection */
430 * Bitmask of enabled u-apsd queues,
431 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
434 unsigned int uapsd_queues;
437 * Maximum number of buffered frames AP can deliver during a
438 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
439 * Needs a new association to take effect.
441 unsigned int uapsd_max_sp_len;
443 int wmm_last_param_set;
449 /* Signal strength from the last Beacon frame in the current BSS. */
450 int last_beacon_signal;
453 * Weighted average of the signal strength from Beacon frames in the
454 * current BSS. This is in units of 1/16 of the signal unit to maintain
455 * accuracy and to speed up calculations, i.e., the value need to be
456 * divided by 16 to get the actual value.
458 int ave_beacon_signal;
461 * Number of Beacon frames used in ave_beacon_signal. This can be used
462 * to avoid generating less reliable cqm events that would be based
463 * only on couple of received frames.
465 unsigned int count_beacon_signal;
468 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
469 * that triggered a cqm event. 0 indicates that no event has been
470 * generated for the current association.
472 int last_cqm_event_signal;
475 * State variables for keeping track of RSSI of the AP currently
476 * connected to and informing driver when RSSI has gone
477 * below/above a certain threshold.
479 int rssi_min_thold, rssi_max_thold;
480 int last_ave_beacon_signal;
482 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
483 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
484 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
485 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
488 struct ieee80211_if_ibss {
489 struct timer_list timer;
491 unsigned long last_scan_completed;
501 u8 bssid[ETH_ALEN] __aligned(2);
502 u8 ssid[IEEE80211_MAX_SSID_LEN];
505 struct cfg80211_chan_def chandef;
507 unsigned long ibss_join_req;
508 /* probe response/beacon for IBSS */
509 struct beacon_data __rcu *presp;
511 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
512 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
514 spinlock_t incomplete_lock;
515 struct list_head incomplete_stations;
518 IEEE80211_IBSS_MLME_SEARCH,
519 IEEE80211_IBSS_MLME_JOINED,
524 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
526 * these declarations define the interface, which enables
527 * vendor-specific mesh synchronization
530 struct ieee802_11_elems;
531 struct ieee80211_mesh_sync_ops {
532 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
534 struct ieee80211_mgmt *mgmt,
535 struct ieee802_11_elems *elems,
536 struct ieee80211_rx_status *rx_status);
537 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
538 /* add other framework functions here */
541 struct ieee80211_if_mesh {
542 struct timer_list housekeeping_timer;
543 struct timer_list mesh_path_timer;
544 struct timer_list mesh_path_root_timer;
546 unsigned long wrkq_flags;
547 unsigned long mbss_changed;
549 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
551 /* Active Path Selection Protocol Identifier */
553 /* Active Path Selection Metric Identifier */
555 /* Congestion Control Mode Identifier */
557 /* Synchronization Protocol Identifier */
559 /* Authentication Protocol Identifier */
561 /* Local mesh Sequence Number */
563 /* Last used PREQ ID */
566 /* Timestamp of last SN update */
567 unsigned long last_sn_update;
568 /* Time when it's ok to send next PERR */
569 unsigned long next_perr;
570 /* Timestamp of last PREQ sent */
571 unsigned long last_preq;
572 struct mesh_rmc *rmc;
573 spinlock_t mesh_preq_queue_lock;
574 struct mesh_preq_queue preq_queue;
576 struct mesh_stats mshstats;
577 struct mesh_config mshcfg;
578 atomic_t estab_plinks;
580 bool accepting_plinks;
582 struct beacon_data __rcu *beacon;
586 IEEE80211_MESH_SEC_NONE = 0x0,
587 IEEE80211_MESH_SEC_AUTHED = 0x1,
588 IEEE80211_MESH_SEC_SECURED = 0x2,
591 /* Extensible Synchronization Framework */
592 const struct ieee80211_mesh_sync_ops *sync_ops;
593 s64 sync_offset_clockdrift_max;
594 spinlock_t sync_offset_lock;
596 /* mesh power save */
597 enum nl80211_mesh_power_mode nonpeer_pm;
598 int ps_peers_light_sleep;
599 int ps_peers_deep_sleep;
603 #ifdef CONFIG_MAC80211_MESH
604 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
605 do { (msh)->mshstats.name++; } while (0)
607 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
612 * enum ieee80211_sub_if_data_flags - virtual interface flags
614 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
615 * @IEEE80211_SDATA_PROMISC: interface is promisc
616 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
617 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
618 * associated stations and deliver multicast frames both
619 * back to wireless media and to the local net stack.
620 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
621 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
623 enum ieee80211_sub_if_data_flags {
624 IEEE80211_SDATA_ALLMULTI = BIT(0),
625 IEEE80211_SDATA_PROMISC = BIT(1),
626 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
627 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
628 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
629 IEEE80211_SDATA_IN_DRIVER = BIT(5),
633 * enum ieee80211_sdata_state_bits - virtual interface state bits
634 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
635 * mirrors netif_running() but is separate for interface type
636 * change handling while the interface is up
637 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
638 * mode, so queues are stopped
639 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
640 * to offchannel, reset when offchannel returns
642 enum ieee80211_sdata_state_bits {
644 SDATA_STATE_OFFCHANNEL,
645 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
649 * enum ieee80211_chanctx_mode - channel context configuration mode
651 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
652 * multiple interfaces
653 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
654 * only by a single interface. This can be used for example for
655 * non-fixed channel IBSS.
657 enum ieee80211_chanctx_mode {
658 IEEE80211_CHANCTX_SHARED,
659 IEEE80211_CHANCTX_EXCLUSIVE
662 struct ieee80211_chanctx {
663 struct list_head list;
664 struct rcu_head rcu_head;
666 enum ieee80211_chanctx_mode mode;
670 struct ieee80211_chanctx_conf conf;
673 struct ieee80211_sub_if_data {
674 struct list_head list;
676 struct wireless_dev wdev;
679 struct list_head key_list;
681 /* count for keys needing tailroom space allocation */
682 int crypto_tx_tailroom_needed_cnt;
683 int crypto_tx_tailroom_pending_dec;
684 struct delayed_work dec_tailroom_needed_wk;
686 struct net_device *dev;
687 struct ieee80211_local *local;
693 int drop_unencrypted;
697 /* Fragment table for host-based reassembly */
698 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
699 unsigned int fragment_next;
701 /* TID bitmap for NoAck policy */
704 /* bit field of ACM bits (BIT(802.1D tag)) */
707 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
708 struct ieee80211_key __rcu *default_unicast_key;
709 struct ieee80211_key __rcu *default_multicast_key;
710 struct ieee80211_key __rcu *default_mgmt_key;
713 __be16 control_port_protocol;
714 bool control_port_no_encrypt;
716 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
718 struct work_struct csa_finalize_work;
719 int csa_counter_offset_beacon;
720 int csa_counter_offset_presp;
721 bool csa_radar_required;
723 /* used to reconfigure hardware SM PS */
724 struct work_struct recalc_smps;
726 struct work_struct work;
727 struct sk_buff_head skb_queue;
730 enum ieee80211_smps_mode smps_mode;
732 int user_power_level; /* in dBm */
733 int ap_power_level; /* in dBm */
736 struct delayed_work dfs_cac_timer_work;
739 * AP this belongs to: self in AP mode and
740 * corresponding AP in VLAN mode, NULL for
741 * all others (might be needed later in IBSS)
743 struct ieee80211_if_ap *bss;
745 /* bitmap of allowed (non-MCS) rate indexes for rate control */
746 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
748 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
749 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
752 struct ieee80211_if_ap ap;
753 struct ieee80211_if_wds wds;
754 struct ieee80211_if_vlan vlan;
755 struct ieee80211_if_managed mgd;
756 struct ieee80211_if_ibss ibss;
757 struct ieee80211_if_mesh mesh;
761 spinlock_t cleanup_stations_lock;
762 struct list_head cleanup_stations;
763 struct work_struct cleanup_stations_wk;
765 #ifdef CONFIG_MAC80211_DEBUGFS
767 struct dentry *subdir_stations;
768 struct dentry *default_unicast_key;
769 struct dentry *default_multicast_key;
770 struct dentry *default_mgmt_key;
774 /* must be last, dynamically sized area in this! */
775 struct ieee80211_vif vif;
779 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
781 return container_of(p, struct ieee80211_sub_if_data, vif);
784 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
785 __acquires(&sdata->wdev.mtx)
787 mutex_lock(&sdata->wdev.mtx);
788 __acquire(&sdata->wdev.mtx);
791 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
792 __releases(&sdata->wdev.mtx)
794 mutex_unlock(&sdata->wdev.mtx);
795 __release(&sdata->wdev.mtx);
799 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
801 lockdep_assert_held(&sdata->wdev.mtx);
804 static inline enum ieee80211_band
805 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
807 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
808 struct ieee80211_chanctx_conf *chanctx_conf;
811 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
812 if (!WARN_ON(!chanctx_conf))
813 band = chanctx_conf->def.chan->band;
820 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
822 switch (chandef->width) {
823 case NL80211_CHAN_WIDTH_5:
825 case NL80211_CHAN_WIDTH_10:
833 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
835 struct ieee80211_chanctx_conf *chanctx_conf;
839 chanctx_conf = rcu_dereference(vif->chanctx_conf);
841 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
847 enum sdata_queue_type {
848 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
849 IEEE80211_SDATA_QUEUE_AGG_START = 1,
850 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
854 IEEE80211_RX_MSG = 1,
855 IEEE80211_TX_STATUS_MSG = 2,
858 enum queue_stop_reason {
859 IEEE80211_QUEUE_STOP_REASON_DRIVER,
860 IEEE80211_QUEUE_STOP_REASON_PS,
861 IEEE80211_QUEUE_STOP_REASON_CSA,
862 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
863 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
864 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
865 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
866 IEEE80211_QUEUE_STOP_REASON_FLUSH,
869 #ifdef CONFIG_MAC80211_LEDS
870 struct tpt_led_trigger {
871 struct led_trigger trig;
873 const struct ieee80211_tpt_blink *blink_table;
874 unsigned int blink_table_len;
875 struct timer_list timer;
876 unsigned long prev_traffic;
877 unsigned long tx_bytes, rx_bytes;
878 unsigned int active, want;
884 * mac80211 scan flags - currently active scan mode
886 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
887 * well be on the operating channel
888 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
889 * determine if we are on the operating channel or not
890 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
891 * channel. This should not interrupt normal traffic.
892 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
893 * that the scan completed.
894 * @SCAN_ABORTED: Set for our scan work function when the driver reported
895 * a scan complete for an aborted scan.
896 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
902 SCAN_ONCHANNEL_SCANNING,
909 * enum mac80211_scan_state - scan state machine states
911 * @SCAN_DECISION: Main entry point to the scan state machine, this state
912 * determines if we should keep on scanning or switch back to the
914 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
915 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
916 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
918 * @SCAN_RESUME: Resume the scan and scan the next channel
919 * @SCAN_ABORT: Abort the scan and go back to operating channel
921 enum mac80211_scan_state {
930 struct ieee80211_local {
931 /* embed the driver visible part.
932 * don't cast (use the static inlines below), but we keep
933 * it first anyway so they become a no-op */
934 struct ieee80211_hw hw;
936 const struct ieee80211_ops *ops;
939 * private workqueue to mac80211. mac80211 makes this accessible
940 * via ieee80211_queue_work()
942 struct workqueue_struct *workqueue;
944 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
945 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
946 spinlock_t queue_stop_reason_lock;
949 int monitors, cooked_mntrs;
950 /* number of interfaces with corresponding FIF_ flags */
951 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
954 unsigned int filter_flags; /* FIF_* */
956 bool wiphy_ciphers_allocated;
960 /* protects the aggregated multicast list and filter calls */
961 spinlock_t filter_lock;
963 /* used for uploading changed mc list */
964 struct work_struct reconfig_filter;
966 /* aggregated multicast list */
967 struct netdev_hw_addr_list mc_list;
969 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
972 * suspended is true if we finished all the suspend _and_ we have
973 * not yet come up from resume. This is to be used by mac80211
974 * to ensure driver sanity during suspend and mac80211's own
975 * sanity. It can eventually be used for WoW as well.
980 * Resuming is true while suspended, but when we're reprogramming the
981 * hardware -- at that time it's allowed to use ieee80211_queue_work()
982 * again even though some other parts of the stack are still suspended
983 * and we still drop received frames to avoid waking the stack.
988 * quiescing is true during the suspend process _only_ to
989 * ease timer cancelling etc.
993 /* device is started */
996 /* device is during a HW reconfig */
999 /* wowlan is enabled -- don't reconfig on resume */
1002 /* DFS/radar detection is enabled */
1003 bool radar_detect_enabled;
1004 struct work_struct radar_detected_work;
1006 /* number of RX chains the hardware has */
1009 int tx_headroom; /* required headroom for hardware/radiotap */
1011 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1012 * added to skb_queue will be processed, but frames in
1013 * skb_queue_unreliable may be dropped if the total length of these
1014 * queues increases over the limit. */
1015 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1016 struct tasklet_struct tasklet;
1017 struct sk_buff_head skb_queue;
1018 struct sk_buff_head skb_queue_unreliable;
1020 spinlock_t rx_path_lock;
1024 * The mutex only protects the list, hash table and
1025 * counter, reads are done with RCU.
1027 struct mutex sta_mtx;
1028 spinlock_t tim_lock;
1029 unsigned long num_sta;
1030 struct list_head sta_list;
1031 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1032 struct timer_list sta_cleanup;
1035 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1036 struct tasklet_struct tx_pending_tasklet;
1038 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1040 /* number of interfaces with corresponding IFF_ flags */
1041 atomic_t iff_allmultis, iff_promiscs;
1043 struct rate_control_ref *rate_ctrl;
1045 struct crypto_cipher *wep_tx_tfm;
1046 struct crypto_cipher *wep_rx_tfm;
1050 struct list_head interfaces;
1051 struct mutex iflist_mtx;
1054 * Key mutex, protects sdata's key_list and sta_info's
1055 * key pointers (write access, they're RCU.)
1057 struct mutex key_mtx;
1059 /* mutex for scan and work locking */
1062 /* Scanning and BSS list */
1063 unsigned long scanning;
1064 struct cfg80211_ssid scan_ssid;
1065 struct cfg80211_scan_request *int_scan_req;
1066 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1067 struct cfg80211_chan_def scan_chandef;
1068 enum ieee80211_band hw_scan_band;
1069 int scan_channel_idx;
1071 int hw_scan_ies_bufsize;
1073 struct work_struct sched_scan_stopped_work;
1074 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1076 unsigned long leave_oper_channel_time;
1077 enum mac80211_scan_state next_scan_state;
1078 struct delayed_work scan_work;
1079 struct ieee80211_sub_if_data __rcu *scan_sdata;
1080 struct cfg80211_chan_def csa_chandef;
1081 /* For backward compatibility only -- do not use */
1082 struct cfg80211_chan_def _oper_chandef;
1084 /* Temporary remain-on-channel for off-channel operations */
1085 struct ieee80211_channel *tmp_channel;
1087 /* channel contexts */
1088 struct list_head chanctx_list;
1089 struct mutex chanctx_mtx;
1092 /* dot11CountersTable */
1093 u32 dot11TransmittedFragmentCount;
1094 u32 dot11MulticastTransmittedFrameCount;
1095 u32 dot11FailedCount;
1096 u32 dot11RetryCount;
1097 u32 dot11MultipleRetryCount;
1098 u32 dot11FrameDuplicateCount;
1099 u32 dot11ReceivedFragmentCount;
1100 u32 dot11MulticastReceivedFrameCount;
1101 u32 dot11TransmittedFrameCount;
1103 #ifdef CONFIG_MAC80211_LEDS
1104 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1105 struct tpt_led_trigger *tpt_led_trigger;
1106 char tx_led_name[32], rx_led_name[32],
1107 assoc_led_name[32], radio_led_name[32];
1110 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1111 /* TX/RX handler statistics */
1112 unsigned int tx_handlers_drop;
1113 unsigned int tx_handlers_queued;
1114 unsigned int tx_handlers_drop_unencrypted;
1115 unsigned int tx_handlers_drop_fragment;
1116 unsigned int tx_handlers_drop_wep;
1117 unsigned int tx_handlers_drop_not_assoc;
1118 unsigned int tx_handlers_drop_unauth_port;
1119 unsigned int rx_handlers_drop;
1120 unsigned int rx_handlers_queued;
1121 unsigned int rx_handlers_drop_nullfunc;
1122 unsigned int rx_handlers_drop_defrag;
1123 unsigned int rx_handlers_drop_short;
1124 unsigned int tx_expand_skb_head;
1125 unsigned int tx_expand_skb_head_cloned;
1126 unsigned int rx_expand_skb_head;
1127 unsigned int rx_expand_skb_head2;
1128 unsigned int rx_handlers_fragments;
1129 unsigned int tx_status_drop;
1130 #define I802_DEBUG_INC(c) (c)++
1131 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1132 #define I802_DEBUG_INC(c) do { } while (0)
1133 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1136 int total_ps_buffered; /* total number of all buffered unicast and
1137 * multicast packets for power saving stations
1141 bool offchannel_ps_enabled;
1143 * PS can only be enabled when we have exactly one managed
1144 * interface (and monitors) in PS, this then points there.
1146 struct ieee80211_sub_if_data *ps_sdata;
1147 struct work_struct dynamic_ps_enable_work;
1148 struct work_struct dynamic_ps_disable_work;
1149 struct timer_list dynamic_ps_timer;
1150 struct notifier_block network_latency_notifier;
1151 struct notifier_block ifa_notifier;
1152 struct notifier_block ifa6_notifier;
1155 * The dynamic ps timeout configured from user space via WEXT -
1156 * this will override whatever chosen by mac80211 internally.
1158 int dynamic_ps_forced_timeout;
1160 int user_power_level; /* in dBm, for all interfaces */
1162 enum ieee80211_smps_mode smps_mode;
1164 struct work_struct restart_work;
1166 #ifdef CONFIG_MAC80211_DEBUGFS
1167 struct local_debugfsdentries {
1168 struct dentry *rcdir;
1169 struct dentry *keys;
1174 * Remain-on-channel support
1176 struct list_head roc_list;
1177 struct work_struct hw_roc_start, hw_roc_done;
1178 unsigned long hw_roc_start_time;
1179 u64 roc_cookie_counter;
1181 struct idr ack_status_frames;
1182 spinlock_t ack_status_lock;
1184 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1186 /* virtual monitor interface */
1187 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1188 struct cfg80211_chan_def monitor_chandef;
1191 static inline struct ieee80211_sub_if_data *
1192 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1194 return netdev_priv(dev);
1197 static inline struct ieee80211_sub_if_data *
1198 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1200 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1203 /* this struct represents 802.11n's RA/TID combination */
1204 struct ieee80211_ra_tid {
1209 /* Parsed Information Elements */
1210 struct ieee802_11_elems {
1214 /* pointers to IEs */
1216 const u8 *supp_rates;
1217 const u8 *ds_params;
1218 const struct ieee80211_tim_ie *tim;
1219 const u8 *challenge;
1222 const u8 *ext_supp_rates;
1224 const u8 *wmm_param;
1225 const struct ieee80211_ht_cap *ht_cap_elem;
1226 const struct ieee80211_ht_operation *ht_operation;
1227 const struct ieee80211_vht_cap *vht_cap_elem;
1228 const struct ieee80211_vht_operation *vht_operation;
1229 const struct ieee80211_meshconf_ie *mesh_config;
1232 const __le16 *awake_window;
1236 const struct ieee80211_rann_ie *rann;
1237 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1238 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1239 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1240 const u8 *country_elem;
1241 const u8 *pwr_constr_elem;
1242 const struct ieee80211_timeout_interval_ie *timeout_int;
1243 const u8 *opmode_notif;
1244 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1246 /* length of them, respectively */
1252 u8 ext_supp_rates_len;
1260 u8 country_elem_len;
1262 /* whether a parse error occurred while retrieving these elements */
1266 static inline struct ieee80211_local *hw_to_local(
1267 struct ieee80211_hw *hw)
1269 return container_of(hw, struct ieee80211_local, hw);
1273 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1275 return ether_addr_equal(raddr, addr) ||
1276 is_broadcast_ether_addr(raddr);
1280 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1282 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1283 status->flag & RX_FLAG_MACTIME_END);
1284 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1287 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1288 struct ieee80211_rx_status *status,
1289 unsigned int mpdu_len,
1290 unsigned int mpdu_offset);
1291 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1292 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1293 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1295 void ieee80211_configure_filter(struct ieee80211_local *local);
1296 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1299 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1300 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1301 struct cfg80211_auth_request *req);
1302 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1303 struct cfg80211_assoc_request *req);
1304 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1305 struct cfg80211_deauth_request *req);
1306 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1307 struct cfg80211_disassoc_request *req);
1308 void ieee80211_send_pspoll(struct ieee80211_local *local,
1309 struct ieee80211_sub_if_data *sdata);
1310 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1311 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1312 int ieee80211_max_network_latency(struct notifier_block *nb,
1313 unsigned long data, void *dummy);
1314 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1315 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1316 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1317 struct sk_buff *skb);
1318 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1319 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1320 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1321 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1322 __le16 fc, bool acked);
1323 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1326 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1327 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1328 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1329 const u8 *bssid, const u8 *addr, u32 supp_rates);
1330 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1331 struct cfg80211_ibss_params *params);
1332 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1333 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1334 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1335 struct sk_buff *skb);
1338 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1339 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1340 struct sk_buff *skb);
1342 /* scan/BSS handling */
1343 void ieee80211_scan_work(struct work_struct *work);
1344 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1345 const u8 *ssid, u8 ssid_len,
1346 struct ieee80211_channel *chan,
1347 enum nl80211_bss_scan_width scan_width);
1348 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1349 struct cfg80211_scan_request *req);
1350 void ieee80211_scan_cancel(struct ieee80211_local *local);
1351 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1352 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1354 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1355 struct ieee80211_bss *
1356 ieee80211_bss_info_update(struct ieee80211_local *local,
1357 struct ieee80211_rx_status *rx_status,
1358 struct ieee80211_mgmt *mgmt,
1360 struct ieee802_11_elems *elems,
1361 struct ieee80211_channel *channel);
1362 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1363 struct ieee80211_bss *bss);
1365 /* scheduled scan handling */
1366 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1367 struct cfg80211_sched_scan_request *req);
1368 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1369 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1371 /* off-channel helpers */
1372 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1373 void ieee80211_offchannel_return(struct ieee80211_local *local);
1374 void ieee80211_roc_setup(struct ieee80211_local *local);
1375 void ieee80211_start_next_roc(struct ieee80211_local *local);
1376 void ieee80211_roc_purge(struct ieee80211_local *local,
1377 struct ieee80211_sub_if_data *sdata);
1378 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1379 void ieee80211_sw_roc_work(struct work_struct *work);
1380 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1382 /* channel switch handling */
1383 void ieee80211_csa_finalize_work(struct work_struct *work);
1385 /* interface handling */
1386 int ieee80211_iface_init(void);
1387 void ieee80211_iface_exit(void);
1388 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1389 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1390 struct vif_params *params);
1391 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1392 enum nl80211_iftype type);
1393 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1394 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1395 u32 ieee80211_idle_off(struct ieee80211_local *local);
1396 void ieee80211_recalc_idle(struct ieee80211_local *local);
1397 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1399 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1400 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1401 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1402 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1404 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1405 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1406 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1407 struct cfg80211_beacon_data *params);
1409 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1411 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1415 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1416 void ieee80211_tx_pending(unsigned long data);
1417 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1418 struct net_device *dev);
1419 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1420 struct net_device *dev);
1421 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1422 struct sk_buff_head *skbs);
1425 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1426 struct ieee80211_sta_ht_cap *ht_cap);
1427 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1428 struct ieee80211_supported_band *sband,
1429 const struct ieee80211_ht_cap *ht_cap_ie,
1430 struct sta_info *sta);
1431 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1432 const u8 *da, u16 tid,
1433 u16 initiator, u16 reason_code);
1434 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1435 enum ieee80211_smps_mode smps, const u8 *da,
1437 void ieee80211_request_smps_work(struct work_struct *work);
1439 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1440 u16 initiator, u16 reason, bool stop);
1441 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1442 u16 initiator, u16 reason, bool stop);
1443 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1444 enum ieee80211_agg_stop_reason reason);
1445 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1446 struct sta_info *sta,
1447 struct ieee80211_mgmt *mgmt, size_t len);
1448 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1449 struct sta_info *sta,
1450 struct ieee80211_mgmt *mgmt,
1452 void ieee80211_process_addba_request(struct ieee80211_local *local,
1453 struct sta_info *sta,
1454 struct ieee80211_mgmt *mgmt,
1457 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1458 enum ieee80211_agg_stop_reason reason);
1459 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1460 enum ieee80211_agg_stop_reason reason);
1461 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1462 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1463 void ieee80211_ba_session_work(struct work_struct *work);
1464 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1465 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1467 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1471 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1472 struct ieee80211_supported_band *sband,
1473 const struct ieee80211_vht_cap *vht_cap_ie,
1474 struct sta_info *sta);
1475 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1476 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1477 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1478 struct sta_info *sta, u8 opmode,
1479 enum ieee80211_band band, bool nss_only);
1480 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1481 struct ieee80211_sta_vht_cap *vht_cap);
1483 /* Spectrum management */
1484 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1485 struct ieee80211_mgmt *mgmt,
1488 /* Suspend/resume and hw reconfiguration */
1489 int ieee80211_reconfig(struct ieee80211_local *local);
1490 void ieee80211_stop_device(struct ieee80211_local *local);
1492 int __ieee80211_suspend(struct ieee80211_hw *hw,
1493 struct cfg80211_wowlan *wowlan);
1495 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1497 struct ieee80211_local *local = hw_to_local(hw);
1499 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1500 "%s: resume with hardware scan still in progress\n",
1501 wiphy_name(hw->wiphy));
1503 return ieee80211_reconfig(hw_to_local(hw));
1506 /* utility functions/constants */
1507 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1508 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1509 enum nl80211_iftype type);
1510 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1511 int rate, int erp, int short_preamble,
1513 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1514 struct ieee80211_hdr *hdr, const u8 *tsc,
1516 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1518 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1519 enum ieee80211_band band);
1521 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1522 struct sk_buff *skb, int tid,
1523 enum ieee80211_band band);
1526 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1527 struct sk_buff *skb, int tid,
1528 enum ieee80211_band band)
1531 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1535 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1536 struct sk_buff *skb, int tid)
1538 struct ieee80211_chanctx_conf *chanctx_conf;
1541 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1542 if (WARN_ON(!chanctx_conf)) {
1548 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1549 chanctx_conf->def.chan->band);
1553 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1554 struct sk_buff *skb)
1556 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1557 ieee80211_tx_skb_tid(sdata, skb, 7);
1560 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1561 struct ieee802_11_elems *elems,
1562 u64 filter, u32 crc);
1563 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1565 struct ieee802_11_elems *elems)
1567 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1570 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1571 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1572 void ieee80211_dynamic_ps_timer(unsigned long data);
1573 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1574 struct ieee80211_sub_if_data *sdata,
1576 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1577 struct ieee80211_hdr *hdr);
1578 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1579 struct ieee80211_hdr *hdr, bool ack);
1581 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1582 unsigned long queues,
1583 enum queue_stop_reason reason);
1584 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1585 unsigned long queues,
1586 enum queue_stop_reason reason);
1587 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1588 enum queue_stop_reason reason);
1589 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1590 enum queue_stop_reason reason);
1591 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1592 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1593 struct sk_buff *skb);
1594 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1595 struct sk_buff_head *skbs,
1596 void (*fn)(void *data), void *data);
1597 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1598 struct sk_buff_head *skbs)
1600 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1602 void ieee80211_flush_queues(struct ieee80211_local *local,
1603 struct ieee80211_sub_if_data *sdata);
1605 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1606 u16 transaction, u16 auth_alg, u16 status,
1607 const u8 *extra, size_t extra_len, const u8 *bssid,
1608 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1610 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1611 const u8 *bssid, u16 stype, u16 reason,
1612 bool send_frame, u8 *frame_buf);
1613 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1614 size_t buffer_len, const u8 *ie, size_t ie_len,
1615 enum ieee80211_band band, u32 rate_mask,
1616 struct cfg80211_chan_def *chandef);
1617 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1618 u8 *dst, u32 ratemask,
1619 struct ieee80211_channel *chan,
1620 const u8 *ssid, size_t ssid_len,
1621 const u8 *ie, size_t ie_len,
1623 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1624 const u8 *ssid, size_t ssid_len,
1625 const u8 *ie, size_t ie_len,
1626 u32 ratemask, bool directed, u32 tx_flags,
1627 struct ieee80211_channel *channel, bool scan);
1629 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1630 struct ieee802_11_elems *elems,
1631 enum ieee80211_band band, u32 *basic_rates);
1632 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1633 enum ieee80211_smps_mode smps_mode);
1634 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1636 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1637 const u8 *ids, int n_ids, size_t offset);
1638 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1639 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1641 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1642 const struct cfg80211_chan_def *chandef,
1644 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1646 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1647 const struct ieee80211_supported_band *sband,
1648 const u8 *srates, int srates_len, u32 *rates);
1649 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1650 struct sk_buff *skb, bool need_basic,
1651 enum ieee80211_band band);
1652 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1653 struct sk_buff *skb, bool need_basic,
1654 enum ieee80211_band band);
1656 /* channel management */
1657 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1658 const struct ieee80211_ht_operation *ht_oper,
1659 struct cfg80211_chan_def *chandef);
1662 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1663 const struct cfg80211_chan_def *chandef,
1664 enum ieee80211_chanctx_mode mode);
1666 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1667 const struct cfg80211_chan_def *chandef,
1669 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1671 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1672 const struct cfg80211_chan_def *chandef,
1674 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1675 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1676 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1679 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1680 struct ieee80211_chanctx *chanctx);
1681 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1682 struct ieee80211_chanctx *chanctx);
1684 void ieee80211_dfs_cac_timer(unsigned long data);
1685 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1686 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1687 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1689 #ifdef CONFIG_MAC80211_NOINLINE
1690 #define debug_noinline noinline
1692 #define debug_noinline
1695 #endif /* IEEE80211_I_H */