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_CONNECTION_POLL = BIT(1),
326 IEEE80211_STA_CONTROL_PORT = BIT(2),
327 IEEE80211_STA_DISABLE_HT = BIT(4),
328 IEEE80211_STA_CSA_RECEIVED = BIT(5),
329 IEEE80211_STA_MFP_ENABLED = BIT(6),
330 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
331 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
332 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
333 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
334 IEEE80211_STA_DISABLE_VHT = BIT(11),
335 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
336 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
337 IEEE80211_STA_DISABLE_WMM = BIT(14),
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;
490 struct work_struct csa_connection_drop_work;
492 unsigned long last_scan_completed;
502 u8 bssid[ETH_ALEN] __aligned(2);
503 u8 ssid[IEEE80211_MAX_SSID_LEN];
506 struct cfg80211_chan_def chandef;
508 unsigned long ibss_join_req;
509 /* probe response/beacon for IBSS */
510 struct beacon_data __rcu *presp;
512 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
513 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
515 spinlock_t incomplete_lock;
516 struct list_head incomplete_stations;
519 IEEE80211_IBSS_MLME_SEARCH,
520 IEEE80211_IBSS_MLME_JOINED,
525 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
527 * these declarations define the interface, which enables
528 * vendor-specific mesh synchronization
531 struct ieee802_11_elems;
532 struct ieee80211_mesh_sync_ops {
533 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
535 struct ieee80211_mgmt *mgmt,
536 struct ieee802_11_elems *elems,
537 struct ieee80211_rx_status *rx_status);
538 void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
539 /* add other framework functions here */
542 struct ieee80211_if_mesh {
543 struct timer_list housekeeping_timer;
544 struct timer_list mesh_path_timer;
545 struct timer_list mesh_path_root_timer;
547 unsigned long wrkq_flags;
548 unsigned long mbss_changed;
550 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
552 /* Active Path Selection Protocol Identifier */
554 /* Active Path Selection Metric Identifier */
556 /* Congestion Control Mode Identifier */
558 /* Synchronization Protocol Identifier */
560 /* Authentication Protocol Identifier */
562 /* Local mesh Sequence Number */
564 /* Last used PREQ ID */
567 /* Timestamp of last SN update */
568 unsigned long last_sn_update;
569 /* Time when it's ok to send next PERR */
570 unsigned long next_perr;
571 /* Timestamp of last PREQ sent */
572 unsigned long last_preq;
573 struct mesh_rmc *rmc;
574 spinlock_t mesh_preq_queue_lock;
575 struct mesh_preq_queue preq_queue;
577 struct mesh_stats mshstats;
578 struct mesh_config mshcfg;
579 atomic_t estab_plinks;
581 bool accepting_plinks;
583 struct beacon_data __rcu *beacon;
587 IEEE80211_MESH_SEC_NONE = 0x0,
588 IEEE80211_MESH_SEC_AUTHED = 0x1,
589 IEEE80211_MESH_SEC_SECURED = 0x2,
592 /* Extensible Synchronization Framework */
593 const struct ieee80211_mesh_sync_ops *sync_ops;
594 s64 sync_offset_clockdrift_max;
595 spinlock_t sync_offset_lock;
597 /* mesh power save */
598 enum nl80211_mesh_power_mode nonpeer_pm;
599 int ps_peers_light_sleep;
600 int ps_peers_deep_sleep;
604 #ifdef CONFIG_MAC80211_MESH
605 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
606 do { (msh)->mshstats.name++; } while (0)
608 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
613 * enum ieee80211_sub_if_data_flags - virtual interface flags
615 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
616 * @IEEE80211_SDATA_PROMISC: interface is promisc
617 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
618 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
619 * associated stations and deliver multicast frames both
620 * back to wireless media and to the local net stack.
621 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
622 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
624 enum ieee80211_sub_if_data_flags {
625 IEEE80211_SDATA_ALLMULTI = BIT(0),
626 IEEE80211_SDATA_PROMISC = BIT(1),
627 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
628 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
629 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
630 IEEE80211_SDATA_IN_DRIVER = BIT(5),
634 * enum ieee80211_sdata_state_bits - virtual interface state bits
635 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
636 * mirrors netif_running() but is separate for interface type
637 * change handling while the interface is up
638 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
639 * mode, so queues are stopped
640 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
641 * to offchannel, reset when offchannel returns
643 enum ieee80211_sdata_state_bits {
645 SDATA_STATE_OFFCHANNEL,
646 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
650 * enum ieee80211_chanctx_mode - channel context configuration mode
652 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
653 * multiple interfaces
654 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
655 * only by a single interface. This can be used for example for
656 * non-fixed channel IBSS.
658 enum ieee80211_chanctx_mode {
659 IEEE80211_CHANCTX_SHARED,
660 IEEE80211_CHANCTX_EXCLUSIVE
663 struct ieee80211_chanctx {
664 struct list_head list;
665 struct rcu_head rcu_head;
667 enum ieee80211_chanctx_mode mode;
671 struct ieee80211_chanctx_conf conf;
674 struct ieee80211_sub_if_data {
675 struct list_head list;
677 struct wireless_dev wdev;
680 struct list_head key_list;
682 /* count for keys needing tailroom space allocation */
683 int crypto_tx_tailroom_needed_cnt;
684 int crypto_tx_tailroom_pending_dec;
685 struct delayed_work dec_tailroom_needed_wk;
687 struct net_device *dev;
688 struct ieee80211_local *local;
694 int drop_unencrypted;
698 /* Fragment table for host-based reassembly */
699 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
700 unsigned int fragment_next;
702 /* TID bitmap for NoAck policy */
705 /* bit field of ACM bits (BIT(802.1D tag)) */
708 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
709 struct ieee80211_key __rcu *default_unicast_key;
710 struct ieee80211_key __rcu *default_multicast_key;
711 struct ieee80211_key __rcu *default_mgmt_key;
714 __be16 control_port_protocol;
715 bool control_port_no_encrypt;
717 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
719 struct work_struct csa_finalize_work;
720 int csa_counter_offset_beacon;
721 int csa_counter_offset_presp;
722 bool csa_radar_required;
724 /* used to reconfigure hardware SM PS */
725 struct work_struct recalc_smps;
727 struct work_struct work;
728 struct sk_buff_head skb_queue;
731 enum ieee80211_smps_mode smps_mode;
733 int user_power_level; /* in dBm */
734 int ap_power_level; /* in dBm */
737 struct delayed_work dfs_cac_timer_work;
740 * AP this belongs to: self in AP mode and
741 * corresponding AP in VLAN mode, NULL for
742 * all others (might be needed later in IBSS)
744 struct ieee80211_if_ap *bss;
746 /* bitmap of allowed (non-MCS) rate indexes for rate control */
747 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
749 bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
750 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
753 struct ieee80211_if_ap ap;
754 struct ieee80211_if_wds wds;
755 struct ieee80211_if_vlan vlan;
756 struct ieee80211_if_managed mgd;
757 struct ieee80211_if_ibss ibss;
758 struct ieee80211_if_mesh mesh;
762 spinlock_t cleanup_stations_lock;
763 struct list_head cleanup_stations;
764 struct work_struct cleanup_stations_wk;
766 #ifdef CONFIG_MAC80211_DEBUGFS
768 struct dentry *subdir_stations;
769 struct dentry *default_unicast_key;
770 struct dentry *default_multicast_key;
771 struct dentry *default_mgmt_key;
775 /* must be last, dynamically sized area in this! */
776 struct ieee80211_vif vif;
780 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
782 return container_of(p, struct ieee80211_sub_if_data, vif);
785 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
786 __acquires(&sdata->wdev.mtx)
788 mutex_lock(&sdata->wdev.mtx);
789 __acquire(&sdata->wdev.mtx);
792 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
793 __releases(&sdata->wdev.mtx)
795 mutex_unlock(&sdata->wdev.mtx);
796 __release(&sdata->wdev.mtx);
800 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
802 lockdep_assert_held(&sdata->wdev.mtx);
805 static inline enum ieee80211_band
806 ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
808 enum ieee80211_band band = IEEE80211_BAND_2GHZ;
809 struct ieee80211_chanctx_conf *chanctx_conf;
812 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
813 if (!WARN_ON(!chanctx_conf))
814 band = chanctx_conf->def.chan->band;
821 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
823 switch (chandef->width) {
824 case NL80211_CHAN_WIDTH_5:
826 case NL80211_CHAN_WIDTH_10:
834 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
836 struct ieee80211_chanctx_conf *chanctx_conf;
840 chanctx_conf = rcu_dereference(vif->chanctx_conf);
842 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
848 enum sdata_queue_type {
849 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
850 IEEE80211_SDATA_QUEUE_AGG_START = 1,
851 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
855 IEEE80211_RX_MSG = 1,
856 IEEE80211_TX_STATUS_MSG = 2,
859 enum queue_stop_reason {
860 IEEE80211_QUEUE_STOP_REASON_DRIVER,
861 IEEE80211_QUEUE_STOP_REASON_PS,
862 IEEE80211_QUEUE_STOP_REASON_CSA,
863 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
864 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
865 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
866 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
867 IEEE80211_QUEUE_STOP_REASON_FLUSH,
870 #ifdef CONFIG_MAC80211_LEDS
871 struct tpt_led_trigger {
872 struct led_trigger trig;
874 const struct ieee80211_tpt_blink *blink_table;
875 unsigned int blink_table_len;
876 struct timer_list timer;
877 unsigned long prev_traffic;
878 unsigned long tx_bytes, rx_bytes;
879 unsigned int active, want;
885 * mac80211 scan flags - currently active scan mode
887 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
888 * well be on the operating channel
889 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
890 * determine if we are on the operating channel or not
891 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
892 * channel. This should not interrupt normal traffic.
893 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
894 * that the scan completed.
895 * @SCAN_ABORTED: Set for our scan work function when the driver reported
896 * a scan complete for an aborted scan.
897 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
903 SCAN_ONCHANNEL_SCANNING,
910 * enum mac80211_scan_state - scan state machine states
912 * @SCAN_DECISION: Main entry point to the scan state machine, this state
913 * determines if we should keep on scanning or switch back to the
915 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
916 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
917 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
919 * @SCAN_RESUME: Resume the scan and scan the next channel
920 * @SCAN_ABORT: Abort the scan and go back to operating channel
922 enum mac80211_scan_state {
931 struct ieee80211_local {
932 /* embed the driver visible part.
933 * don't cast (use the static inlines below), but we keep
934 * it first anyway so they become a no-op */
935 struct ieee80211_hw hw;
937 const struct ieee80211_ops *ops;
940 * private workqueue to mac80211. mac80211 makes this accessible
941 * via ieee80211_queue_work()
943 struct workqueue_struct *workqueue;
945 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
946 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
947 spinlock_t queue_stop_reason_lock;
950 int monitors, cooked_mntrs;
951 /* number of interfaces with corresponding FIF_ flags */
952 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
955 unsigned int filter_flags; /* FIF_* */
957 bool wiphy_ciphers_allocated;
961 /* protects the aggregated multicast list and filter calls */
962 spinlock_t filter_lock;
964 /* used for uploading changed mc list */
965 struct work_struct reconfig_filter;
967 /* aggregated multicast list */
968 struct netdev_hw_addr_list mc_list;
970 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
973 * suspended is true if we finished all the suspend _and_ we have
974 * not yet come up from resume. This is to be used by mac80211
975 * to ensure driver sanity during suspend and mac80211's own
976 * sanity. It can eventually be used for WoW as well.
981 * Resuming is true while suspended, but when we're reprogramming the
982 * hardware -- at that time it's allowed to use ieee80211_queue_work()
983 * again even though some other parts of the stack are still suspended
984 * and we still drop received frames to avoid waking the stack.
989 * quiescing is true during the suspend process _only_ to
990 * ease timer cancelling etc.
994 /* device is started */
997 /* device is during a HW reconfig */
1000 /* wowlan is enabled -- don't reconfig on resume */
1003 /* DFS/radar detection is enabled */
1004 bool radar_detect_enabled;
1005 struct work_struct radar_detected_work;
1007 /* number of RX chains the hardware has */
1010 int tx_headroom; /* required headroom for hardware/radiotap */
1012 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1013 * added to skb_queue will be processed, but frames in
1014 * skb_queue_unreliable may be dropped if the total length of these
1015 * queues increases over the limit. */
1016 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1017 struct tasklet_struct tasklet;
1018 struct sk_buff_head skb_queue;
1019 struct sk_buff_head skb_queue_unreliable;
1021 spinlock_t rx_path_lock;
1025 * The mutex only protects the list, hash table and
1026 * counter, reads are done with RCU.
1028 struct mutex sta_mtx;
1029 spinlock_t tim_lock;
1030 unsigned long num_sta;
1031 struct list_head sta_list;
1032 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
1033 struct timer_list sta_cleanup;
1036 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1037 struct tasklet_struct tx_pending_tasklet;
1039 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1041 /* number of interfaces with corresponding IFF_ flags */
1042 atomic_t iff_allmultis, iff_promiscs;
1044 struct rate_control_ref *rate_ctrl;
1046 struct crypto_cipher *wep_tx_tfm;
1047 struct crypto_cipher *wep_rx_tfm;
1051 struct list_head interfaces;
1052 struct mutex iflist_mtx;
1055 * Key mutex, protects sdata's key_list and sta_info's
1056 * key pointers (write access, they're RCU.)
1058 struct mutex key_mtx;
1060 /* mutex for scan and work locking */
1063 /* Scanning and BSS list */
1064 unsigned long scanning;
1065 struct cfg80211_ssid scan_ssid;
1066 struct cfg80211_scan_request *int_scan_req;
1067 struct cfg80211_scan_request *scan_req, *hw_scan_req;
1068 struct cfg80211_chan_def scan_chandef;
1069 enum ieee80211_band hw_scan_band;
1070 int scan_channel_idx;
1072 int hw_scan_ies_bufsize;
1074 struct work_struct sched_scan_stopped_work;
1075 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1077 unsigned long leave_oper_channel_time;
1078 enum mac80211_scan_state next_scan_state;
1079 struct delayed_work scan_work;
1080 struct ieee80211_sub_if_data __rcu *scan_sdata;
1081 struct cfg80211_chan_def csa_chandef;
1082 /* For backward compatibility only -- do not use */
1083 struct cfg80211_chan_def _oper_chandef;
1085 /* Temporary remain-on-channel for off-channel operations */
1086 struct ieee80211_channel *tmp_channel;
1088 /* channel contexts */
1089 struct list_head chanctx_list;
1090 struct mutex chanctx_mtx;
1093 /* dot11CountersTable */
1094 u32 dot11TransmittedFragmentCount;
1095 u32 dot11MulticastTransmittedFrameCount;
1096 u32 dot11FailedCount;
1097 u32 dot11RetryCount;
1098 u32 dot11MultipleRetryCount;
1099 u32 dot11FrameDuplicateCount;
1100 u32 dot11ReceivedFragmentCount;
1101 u32 dot11MulticastReceivedFrameCount;
1102 u32 dot11TransmittedFrameCount;
1104 #ifdef CONFIG_MAC80211_LEDS
1105 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
1106 struct tpt_led_trigger *tpt_led_trigger;
1107 char tx_led_name[32], rx_led_name[32],
1108 assoc_led_name[32], radio_led_name[32];
1111 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1112 /* TX/RX handler statistics */
1113 unsigned int tx_handlers_drop;
1114 unsigned int tx_handlers_queued;
1115 unsigned int tx_handlers_drop_unencrypted;
1116 unsigned int tx_handlers_drop_fragment;
1117 unsigned int tx_handlers_drop_wep;
1118 unsigned int tx_handlers_drop_not_assoc;
1119 unsigned int tx_handlers_drop_unauth_port;
1120 unsigned int rx_handlers_drop;
1121 unsigned int rx_handlers_queued;
1122 unsigned int rx_handlers_drop_nullfunc;
1123 unsigned int rx_handlers_drop_defrag;
1124 unsigned int rx_handlers_drop_short;
1125 unsigned int tx_expand_skb_head;
1126 unsigned int tx_expand_skb_head_cloned;
1127 unsigned int rx_expand_skb_head;
1128 unsigned int rx_expand_skb_head2;
1129 unsigned int rx_handlers_fragments;
1130 unsigned int tx_status_drop;
1131 #define I802_DEBUG_INC(c) (c)++
1132 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1133 #define I802_DEBUG_INC(c) do { } while (0)
1134 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1137 int total_ps_buffered; /* total number of all buffered unicast and
1138 * multicast packets for power saving stations
1142 bool offchannel_ps_enabled;
1144 * PS can only be enabled when we have exactly one managed
1145 * interface (and monitors) in PS, this then points there.
1147 struct ieee80211_sub_if_data *ps_sdata;
1148 struct work_struct dynamic_ps_enable_work;
1149 struct work_struct dynamic_ps_disable_work;
1150 struct timer_list dynamic_ps_timer;
1151 struct notifier_block network_latency_notifier;
1152 struct notifier_block ifa_notifier;
1153 struct notifier_block ifa6_notifier;
1156 * The dynamic ps timeout configured from user space via WEXT -
1157 * this will override whatever chosen by mac80211 internally.
1159 int dynamic_ps_forced_timeout;
1161 int user_power_level; /* in dBm, for all interfaces */
1163 enum ieee80211_smps_mode smps_mode;
1165 struct work_struct restart_work;
1167 #ifdef CONFIG_MAC80211_DEBUGFS
1168 struct local_debugfsdentries {
1169 struct dentry *rcdir;
1170 struct dentry *keys;
1175 * Remain-on-channel support
1177 struct list_head roc_list;
1178 struct work_struct hw_roc_start, hw_roc_done;
1179 unsigned long hw_roc_start_time;
1180 u64 roc_cookie_counter;
1182 struct idr ack_status_frames;
1183 spinlock_t ack_status_lock;
1185 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1187 /* virtual monitor interface */
1188 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1189 struct cfg80211_chan_def monitor_chandef;
1192 static inline struct ieee80211_sub_if_data *
1193 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1195 return netdev_priv(dev);
1198 static inline struct ieee80211_sub_if_data *
1199 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1201 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1204 /* this struct represents 802.11n's RA/TID combination */
1205 struct ieee80211_ra_tid {
1210 /* Parsed Information Elements */
1211 struct ieee802_11_elems {
1215 /* pointers to IEs */
1217 const u8 *supp_rates;
1218 const u8 *ds_params;
1219 const struct ieee80211_tim_ie *tim;
1220 const u8 *challenge;
1223 const u8 *ext_supp_rates;
1225 const u8 *wmm_param;
1226 const struct ieee80211_ht_cap *ht_cap_elem;
1227 const struct ieee80211_ht_operation *ht_operation;
1228 const struct ieee80211_vht_cap *vht_cap_elem;
1229 const struct ieee80211_vht_operation *vht_operation;
1230 const struct ieee80211_meshconf_ie *mesh_config;
1233 const __le16 *awake_window;
1237 const struct ieee80211_rann_ie *rann;
1238 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1239 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1240 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1241 const u8 *country_elem;
1242 const u8 *pwr_constr_elem;
1243 const struct ieee80211_timeout_interval_ie *timeout_int;
1244 const u8 *opmode_notif;
1245 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1247 /* length of them, respectively */
1253 u8 ext_supp_rates_len;
1261 u8 country_elem_len;
1263 /* whether a parse error occurred while retrieving these elements */
1267 static inline struct ieee80211_local *hw_to_local(
1268 struct ieee80211_hw *hw)
1270 return container_of(hw, struct ieee80211_local, hw);
1274 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1276 return ether_addr_equal(raddr, addr) ||
1277 is_broadcast_ether_addr(raddr);
1281 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1283 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1284 status->flag & RX_FLAG_MACTIME_END);
1285 return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
1288 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1289 struct ieee80211_rx_status *status,
1290 unsigned int mpdu_len,
1291 unsigned int mpdu_offset);
1292 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1293 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1294 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1296 void ieee80211_configure_filter(struct ieee80211_local *local);
1297 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1300 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1301 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1302 struct cfg80211_auth_request *req);
1303 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1304 struct cfg80211_assoc_request *req);
1305 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1306 struct cfg80211_deauth_request *req);
1307 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1308 struct cfg80211_disassoc_request *req);
1309 void ieee80211_send_pspoll(struct ieee80211_local *local,
1310 struct ieee80211_sub_if_data *sdata);
1311 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1312 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1313 int ieee80211_max_network_latency(struct notifier_block *nb,
1314 unsigned long data, void *dummy);
1315 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1316 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1317 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1318 struct sk_buff *skb);
1319 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1320 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1321 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1322 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1323 __le16 fc, bool acked);
1324 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1327 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1328 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1329 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1330 const u8 *bssid, const u8 *addr, u32 supp_rates);
1331 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1332 struct cfg80211_ibss_params *params);
1333 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1334 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1335 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1336 struct sk_buff *skb);
1337 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1338 struct cfg80211_csa_settings *csa_settings);
1339 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1340 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1343 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1344 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1345 struct sk_buff *skb);
1347 /* scan/BSS handling */
1348 void ieee80211_scan_work(struct work_struct *work);
1349 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1350 const u8 *ssid, u8 ssid_len,
1351 struct ieee80211_channel *chan,
1352 enum nl80211_bss_scan_width scan_width);
1353 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1354 struct cfg80211_scan_request *req);
1355 void ieee80211_scan_cancel(struct ieee80211_local *local);
1356 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1357 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1359 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1360 struct ieee80211_bss *
1361 ieee80211_bss_info_update(struct ieee80211_local *local,
1362 struct ieee80211_rx_status *rx_status,
1363 struct ieee80211_mgmt *mgmt,
1365 struct ieee802_11_elems *elems,
1366 struct ieee80211_channel *channel);
1367 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1368 struct ieee80211_bss *bss);
1370 /* scheduled scan handling */
1371 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1372 struct cfg80211_sched_scan_request *req);
1373 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1374 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1376 /* off-channel helpers */
1377 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1378 void ieee80211_offchannel_return(struct ieee80211_local *local);
1379 void ieee80211_roc_setup(struct ieee80211_local *local);
1380 void ieee80211_start_next_roc(struct ieee80211_local *local);
1381 void ieee80211_roc_purge(struct ieee80211_local *local,
1382 struct ieee80211_sub_if_data *sdata);
1383 void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
1384 void ieee80211_sw_roc_work(struct work_struct *work);
1385 void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
1387 /* channel switch handling */
1388 void ieee80211_csa_finalize_work(struct work_struct *work);
1390 /* interface handling */
1391 int ieee80211_iface_init(void);
1392 void ieee80211_iface_exit(void);
1393 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1394 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1395 struct vif_params *params);
1396 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1397 enum nl80211_iftype type);
1398 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1399 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1400 u32 ieee80211_idle_off(struct ieee80211_local *local);
1401 void ieee80211_recalc_idle(struct ieee80211_local *local);
1402 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1404 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1405 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1406 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1407 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1409 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1410 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1411 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1412 struct cfg80211_beacon_data *params);
1414 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1416 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1420 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1421 void ieee80211_tx_pending(unsigned long data);
1422 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1423 struct net_device *dev);
1424 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1425 struct net_device *dev);
1426 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1427 struct sk_buff_head *skbs);
1430 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1431 struct ieee80211_sta_ht_cap *ht_cap);
1432 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1433 struct ieee80211_supported_band *sband,
1434 const struct ieee80211_ht_cap *ht_cap_ie,
1435 struct sta_info *sta);
1436 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1437 const u8 *da, u16 tid,
1438 u16 initiator, u16 reason_code);
1439 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1440 enum ieee80211_smps_mode smps, const u8 *da,
1442 void ieee80211_request_smps_work(struct work_struct *work);
1444 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1445 u16 initiator, u16 reason, bool stop);
1446 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1447 u16 initiator, u16 reason, bool stop);
1448 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1449 enum ieee80211_agg_stop_reason reason);
1450 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1451 struct sta_info *sta,
1452 struct ieee80211_mgmt *mgmt, size_t len);
1453 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1454 struct sta_info *sta,
1455 struct ieee80211_mgmt *mgmt,
1457 void ieee80211_process_addba_request(struct ieee80211_local *local,
1458 struct sta_info *sta,
1459 struct ieee80211_mgmt *mgmt,
1462 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1463 enum ieee80211_agg_stop_reason reason);
1464 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1465 enum ieee80211_agg_stop_reason reason);
1466 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1467 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1468 void ieee80211_ba_session_work(struct work_struct *work);
1469 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1470 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1472 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1476 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1477 struct ieee80211_supported_band *sband,
1478 const struct ieee80211_vht_cap *vht_cap_ie,
1479 struct sta_info *sta);
1480 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1481 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1482 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1483 struct sta_info *sta, u8 opmode,
1484 enum ieee80211_band band, bool nss_only);
1485 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1486 struct ieee80211_sta_vht_cap *vht_cap);
1488 /* Spectrum management */
1489 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1490 struct ieee80211_mgmt *mgmt,
1493 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1494 * @sdata: the sdata of the interface which has received the frame
1495 * @elems: parsed 802.11 elements received with the frame
1496 * @beacon: indicates if the frame was a beacon or probe response
1497 * @current_band: indicates the current band
1498 * @sta_flags: contains information about own capabilities and restrictions
1499 * to decide which channel switch announcements can be accepted. Only the
1500 * following subset of &enum ieee80211_sta_flags are evaluated:
1501 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1502 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1503 * %IEEE80211_STA_DISABLE_160MHZ.
1504 * @count: to be filled with the counter until the switch (on success only)
1505 * @bssid: the currently connected bssid (for reporting)
1506 * @mode: to be filled with CSA mode (on success only)
1507 * @new_chandef: to be filled with destination chandef (on success only)
1508 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1510 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1511 struct ieee802_11_elems *elems, bool beacon,
1512 enum ieee80211_band current_band,
1513 u32 sta_flags, u8 *bssid, u8 *count, u8 *mode,
1514 struct cfg80211_chan_def *new_chandef);
1516 /* Suspend/resume and hw reconfiguration */
1517 int ieee80211_reconfig(struct ieee80211_local *local);
1518 void ieee80211_stop_device(struct ieee80211_local *local);
1520 int __ieee80211_suspend(struct ieee80211_hw *hw,
1521 struct cfg80211_wowlan *wowlan);
1523 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1525 struct ieee80211_local *local = hw_to_local(hw);
1527 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1528 "%s: resume with hardware scan still in progress\n",
1529 wiphy_name(hw->wiphy));
1531 return ieee80211_reconfig(hw_to_local(hw));
1534 /* utility functions/constants */
1535 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1536 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1537 enum nl80211_iftype type);
1538 int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
1539 int rate, int erp, int short_preamble,
1541 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1542 struct ieee80211_hdr *hdr, const u8 *tsc,
1544 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1546 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
1547 enum ieee80211_band band);
1549 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1550 struct sk_buff *skb, int tid,
1551 enum ieee80211_band band);
1554 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1555 struct sk_buff *skb, int tid,
1556 enum ieee80211_band band)
1559 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1563 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1564 struct sk_buff *skb, int tid)
1566 struct ieee80211_chanctx_conf *chanctx_conf;
1569 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1570 if (WARN_ON(!chanctx_conf)) {
1576 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1577 chanctx_conf->def.chan->band);
1581 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1582 struct sk_buff *skb)
1584 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1585 ieee80211_tx_skb_tid(sdata, skb, 7);
1588 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1589 struct ieee802_11_elems *elems,
1590 u64 filter, u32 crc);
1591 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1593 struct ieee802_11_elems *elems)
1595 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1598 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1599 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1600 void ieee80211_dynamic_ps_timer(unsigned long data);
1601 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1602 struct ieee80211_sub_if_data *sdata,
1604 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1605 struct ieee80211_hdr *hdr);
1606 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1607 struct ieee80211_hdr *hdr, bool ack);
1609 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1610 unsigned long queues,
1611 enum queue_stop_reason reason);
1612 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1613 unsigned long queues,
1614 enum queue_stop_reason reason);
1615 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1616 enum queue_stop_reason reason);
1617 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1618 enum queue_stop_reason reason);
1619 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1620 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1621 struct sk_buff *skb);
1622 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1623 struct sk_buff_head *skbs,
1624 void (*fn)(void *data), void *data);
1625 static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1626 struct sk_buff_head *skbs)
1628 ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
1630 void ieee80211_flush_queues(struct ieee80211_local *local,
1631 struct ieee80211_sub_if_data *sdata);
1633 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1634 u16 transaction, u16 auth_alg, u16 status,
1635 const u8 *extra, size_t extra_len, const u8 *bssid,
1636 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
1638 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
1639 const u8 *bssid, u16 stype, u16 reason,
1640 bool send_frame, u8 *frame_buf);
1641 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1642 size_t buffer_len, const u8 *ie, size_t ie_len,
1643 enum ieee80211_band band, u32 rate_mask,
1644 struct cfg80211_chan_def *chandef);
1645 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1646 u8 *dst, u32 ratemask,
1647 struct ieee80211_channel *chan,
1648 const u8 *ssid, size_t ssid_len,
1649 const u8 *ie, size_t ie_len,
1651 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1652 const u8 *ssid, size_t ssid_len,
1653 const u8 *ie, size_t ie_len,
1654 u32 ratemask, bool directed, u32 tx_flags,
1655 struct ieee80211_channel *channel, bool scan);
1657 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
1658 struct ieee802_11_elems *elems,
1659 enum ieee80211_band band, u32 *basic_rates);
1660 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1661 enum ieee80211_smps_mode smps_mode);
1662 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
1664 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1665 const u8 *ids, int n_ids, size_t offset);
1666 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1667 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1669 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1670 const struct cfg80211_chan_def *chandef,
1672 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
1674 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
1675 const struct ieee80211_supported_band *sband,
1676 const u8 *srates, int srates_len, u32 *rates);
1677 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
1678 struct sk_buff *skb, bool need_basic,
1679 enum ieee80211_band band);
1680 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
1681 struct sk_buff *skb, bool need_basic,
1682 enum ieee80211_band band);
1684 /* channel management */
1685 void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
1686 const struct ieee80211_ht_operation *ht_oper,
1687 struct cfg80211_chan_def *chandef);
1688 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
1691 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
1692 const struct cfg80211_chan_def *chandef,
1693 enum ieee80211_chanctx_mode mode);
1695 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
1696 const struct cfg80211_chan_def *chandef,
1698 /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
1700 ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
1701 const struct cfg80211_chan_def *chandef,
1703 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
1704 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
1705 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
1708 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
1709 struct ieee80211_chanctx *chanctx);
1710 void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
1711 struct ieee80211_chanctx *chanctx);
1713 void ieee80211_dfs_cac_timer(unsigned long data);
1714 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
1715 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
1716 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
1718 #ifdef CONFIG_MAC80211_NOINLINE
1719 #define debug_noinline noinline
1721 #define debug_noinline
1724 #endif /* IEEE80211_I_H */