2 * Driver interface definition
3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
8 * This file defines a driver interface used by both %wpa_supplicant and
9 * hostapd. The first part of the file defines data structures used in various
10 * driver operations. This is followed by the struct wpa_driver_ops that each
11 * driver wrapper will beed to define with callback functions for requesting
12 * driver operations. After this, there are definitions for driver event
13 * reporting with wpa_supplicant_event() and some convenience helper functions
14 * that can be used to report events.
20 #define WPA_SUPPLICANT_DRIVER_VERSION 4
22 #include "common/defs.h"
23 #include "utils/list.h"
25 #define HOSTAPD_CHAN_DISABLED 0x00000001
26 #define HOSTAPD_CHAN_PASSIVE_SCAN 0x00000002
27 #define HOSTAPD_CHAN_NO_IBSS 0x00000004
28 #define HOSTAPD_CHAN_RADAR 0x00000008
29 #define HOSTAPD_CHAN_HT40PLUS 0x00000010
30 #define HOSTAPD_CHAN_HT40MINUS 0x00000020
31 #define HOSTAPD_CHAN_HT40 0x00000040
32 #define HOSTAPD_CHAN_SURVEY_LIST_INITIALIZED 0x00000080
34 #define HOSTAPD_CHAN_DFS_UNKNOWN 0x00000000
35 #define HOSTAPD_CHAN_DFS_USABLE 0x00000100
36 #define HOSTAPD_CHAN_DFS_UNAVAILABLE 0x00000200
37 #define HOSTAPD_CHAN_DFS_AVAILABLE 0x00000300
38 #define HOSTAPD_CHAN_DFS_MASK 0x00000300
40 #define HOSTAPD_CHAN_VHT_10_70 0x00000800
41 #define HOSTAPD_CHAN_VHT_30_50 0x00001000
42 #define HOSTAPD_CHAN_VHT_50_30 0x00002000
43 #define HOSTAPD_CHAN_VHT_70_10 0x00004000
45 enum reg_change_initiator {
49 REGDOM_SET_BY_COUNTRY_IE,
57 REGDOM_TYPE_CUSTOM_WORLD,
58 REGDOM_TYPE_INTERSECTION,
62 * struct hostapd_channel_data - Channel information
64 struct hostapd_channel_data {
66 * chan - Channel number (IEEE 802.11)
71 * freq - Frequency in MHz
76 * flag - Channel flags (HOSTAPD_CHAN_*)
81 * max_tx_power - Regulatory transmit power limit in dBm
86 * survey_list - Linked list of surveys
88 struct dl_list survey_list;
91 * min_nf - Minimum observed noise floor, in dBm, based on all
92 * surveyed channel data
98 * interference_factor - Computed interference factor on this
99 * channel (used internally in src/ap/acs.c; driver wrappers do not
102 long double interference_factor;
103 #endif /* CONFIG_ACS */
105 /* DFS CAC time in milliseconds */
106 unsigned int dfs_cac_ms;
109 #define HOSTAPD_MODE_FLAG_HT_INFO_KNOWN BIT(0)
110 #define HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN BIT(1)
113 * struct hostapd_hw_modes - Supported hardware mode information
115 struct hostapd_hw_modes {
117 * mode - Hardware mode
119 enum hostapd_hw_mode mode;
122 * num_channels - Number of entries in the channels array
127 * channels - Array of supported channels
129 struct hostapd_channel_data *channels;
132 * num_rates - Number of entries in the rates array
137 * rates - Array of supported rates in 100 kbps units
142 * ht_capab - HT (IEEE 802.11n) capabilities
147 * mcs_set - MCS (IEEE 802.11n) rate parameters
152 * a_mpdu_params - A-MPDU (IEEE 802.11n) parameters
157 * vht_capab - VHT (IEEE 802.11ac) capabilities
162 * vht_mcs_set - VHT MCS (IEEE 802.11ac) rate parameters
166 unsigned int flags; /* HOSTAPD_MODE_FLAG_* */
170 #define IEEE80211_MODE_INFRA 0
171 #define IEEE80211_MODE_IBSS 1
172 #define IEEE80211_MODE_AP 2
174 #define IEEE80211_CAP_ESS 0x0001
175 #define IEEE80211_CAP_IBSS 0x0002
176 #define IEEE80211_CAP_PRIVACY 0x0010
178 /* DMG (60 GHz) IEEE 802.11ad */
179 /* type - bits 0..1 */
180 #define IEEE80211_CAP_DMG_MASK 0x0003
181 #define IEEE80211_CAP_DMG_IBSS 0x0001 /* Tx by: STA */
182 #define IEEE80211_CAP_DMG_PBSS 0x0002 /* Tx by: PCP */
183 #define IEEE80211_CAP_DMG_AP 0x0003 /* Tx by: AP */
185 #define WPA_SCAN_QUAL_INVALID BIT(0)
186 #define WPA_SCAN_NOISE_INVALID BIT(1)
187 #define WPA_SCAN_LEVEL_INVALID BIT(2)
188 #define WPA_SCAN_LEVEL_DBM BIT(3)
189 #define WPA_SCAN_AUTHENTICATED BIT(4)
190 #define WPA_SCAN_ASSOCIATED BIT(5)
193 * struct wpa_scan_res - Scan result for an BSS/IBSS
194 * @flags: information flags about the BSS/IBSS (WPA_SCAN_*)
196 * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
197 * @beacon_int: beacon interval in TUs (host byte order)
198 * @caps: capability information field in host byte order
199 * @qual: signal quality
200 * @noise: noise level
201 * @level: signal level
203 * @age: Age of the information in milliseconds (i.e., how many milliseconds
204 * ago the last Beacon or Probe Response frame was received)
205 * @ie_len: length of the following IE field in octets
206 * @beacon_ie_len: length of the following Beacon IE field in octets
208 * This structure is used as a generic format for scan results from the
209 * driver. Each driver interface implementation is responsible for converting
210 * the driver or OS specific scan results into this format.
212 * If the driver does not support reporting all IEs, the IE data structure is
213 * constructed of the IEs that are available. This field will also need to
214 * include SSID in IE format. All drivers are encouraged to be extended to
215 * report all IEs to make it easier to support future additions.
217 struct wpa_scan_res {
229 size_t beacon_ie_len;
231 * Followed by ie_len octets of IEs from Probe Response frame (or if
232 * the driver does not indicate source of IEs, these may also be from
233 * Beacon frame). After the first set of IEs, another set of IEs may
234 * follow (with beacon_ie_len octets of data) if the driver provides
240 * struct wpa_scan_results - Scan results
241 * @res: Array of pointers to allocated variable length scan result entries
242 * @num: Number of entries in the scan result array
243 * @fetch_time: Time when the results were fetched from the driver
245 struct wpa_scan_results {
246 struct wpa_scan_res **res;
248 struct os_reltime fetch_time;
252 * struct wpa_interface_info - Network interface information
253 * @next: Pointer to the next interface or NULL if this is the last one
254 * @ifname: Interface name that can be used with init() or init2()
255 * @desc: Human readable adapter description (e.g., vendor/model) or NULL if
257 * @drv_name: struct wpa_driver_ops::name (note: unlike other strings, this one
258 * is not an allocated copy, i.e., get_interfaces() caller will not free
261 struct wpa_interface_info {
262 struct wpa_interface_info *next;
265 const char *drv_name;
268 #define WPAS_MAX_SCAN_SSIDS 16
271 * struct wpa_driver_scan_params - Scan parameters
272 * Data for struct wpa_driver_ops::scan2().
274 struct wpa_driver_scan_params {
276 * ssids - SSIDs to scan for
278 struct wpa_driver_scan_ssid {
280 * ssid - specific SSID to scan for (ProbeReq)
281 * %NULL or zero-length SSID is used to indicate active scan
282 * with wildcard SSID.
286 * ssid_len: Length of the SSID in octets
289 } ssids[WPAS_MAX_SCAN_SSIDS];
292 * num_ssids - Number of entries in ssids array
293 * Zero indicates a request for a passive scan.
298 * extra_ies - Extra IE(s) to add into Probe Request or %NULL
303 * extra_ies_len - Length of extra_ies in octets
305 size_t extra_ies_len;
308 * freqs - Array of frequencies to scan or %NULL for all frequencies
310 * The frequency is set in MHz. The array is zero-terminated.
315 * filter_ssids - Filter for reporting SSIDs
317 * This optional parameter can be used to request the driver wrapper to
318 * filter scan results to include only the specified SSIDs. %NULL
319 * indicates that no filtering is to be done. This can be used to
320 * reduce memory needs for scan results in environments that have large
321 * number of APs with different SSIDs.
323 * The driver wrapper is allowed to take this allocated buffer into its
324 * own use by setting the pointer to %NULL. In that case, the driver
325 * wrapper is responsible for freeing the buffer with os_free() once it
326 * is not needed anymore.
328 struct wpa_driver_scan_filter {
334 * num_filter_ssids - Number of entries in filter_ssids array
336 size_t num_filter_ssids;
339 * filter_rssi - Filter by RSSI
341 * The driver may filter scan results in firmware to reduce host
342 * wakeups and thereby save power. Specify the RSSI threshold in s32
348 * p2p_probe - Used to disable CCK (802.11b) rates for P2P probes
350 * When set, the driver is expected to remove rates 1, 2, 5.5, and 11
351 * Mbps from the support rates element(s) in the Probe Request frames
352 * and not to transmit the frames at any of those rates.
357 * only_new_results - Request driver to report only new results
359 * This is used to request the driver to report only BSSes that have
360 * been detected after this scan request has been started, i.e., to
361 * flush old cached BSS entries.
363 int only_new_results;
366 * NOTE: Whenever adding new parameters here, please make sure
367 * wpa_scan_clone_params() and wpa_scan_free_params() get updated with
373 * struct wpa_driver_auth_params - Authentication parameters
374 * Data for struct wpa_driver_ops::authenticate().
376 struct wpa_driver_auth_params {
384 const u8 *wep_key[4];
385 size_t wep_key_len[4];
387 int local_state_change;
390 * p2p - Whether this connection is a P2P group
400 WPS_MODE_NONE /* no WPS provisioning being used */,
401 WPS_MODE_OPEN /* WPS provisioning with AP that is in open mode */,
402 WPS_MODE_PRIVACY /* WPS provisioning with AP that is using protection
407 * struct wpa_driver_associate_params - Association parameters
408 * Data for struct wpa_driver_ops::associate().
410 struct wpa_driver_associate_params {
412 * bssid - BSSID of the selected AP
413 * This can be %NULL, if ap_scan=2 mode is used and the driver is
414 * responsible for selecting with which BSS to associate. */
418 * bssid_hint - BSSID of a proposed AP
420 * This indicates which BSS has been found a suitable candidate for
421 * initial association for drivers that use driver/firmwate-based BSS
422 * selection. Unlike the @bssid parameter, @bssid_hint does not limit
423 * the driver from selecting other BSSes in the ESS.
425 const u8 *bssid_hint;
428 * ssid - The selected SSID
433 * ssid_len - Length of the SSID (1..32)
438 * freq - Frequency of the channel the selected AP is using
439 * Frequency that the selected AP is using (in MHz as
440 * reported in the scan results)
445 * freq_hint - Frequency of the channel the proposed AP is using
447 * This provides a channel on which a suitable BSS has been found as a
448 * hint for the driver. Unlike the @freq parameter, @freq_hint does not
449 * limit the driver from selecting other channels for
450 * driver/firmware-based BSS selection.
455 * bg_scan_period - Background scan period in seconds, 0 to disable
456 * background scan, or -1 to indicate no change to default driver
462 * beacon_int - Beacon interval for IBSS or 0 to use driver default
467 * wpa_ie - WPA information element for (Re)Association Request
468 * WPA information element to be included in (Re)Association
469 * Request (including information element id and length). Use
470 * of this WPA IE is optional. If the driver generates the WPA
471 * IE, it can use pairwise_suite, group_suite, and
472 * key_mgmt_suite to select proper algorithms. In this case,
473 * the driver has to notify wpa_supplicant about the used WPA
474 * IE by generating an event that the interface code will
475 * convert into EVENT_ASSOCINFO data (see below).
477 * When using WPA2/IEEE 802.11i, wpa_ie is used for RSN IE
478 * instead. The driver can determine which version is used by
479 * looking at the first byte of the IE (0xdd for WPA, 0x30 for
482 * When using WPS, wpa_ie is used for WPS IE instead of WPA/RSN IE.
487 * wpa_ie_len - length of the wpa_ie
492 * wpa_proto - Bitfield of WPA_PROTO_* values to indicate WPA/WPA2
494 unsigned int wpa_proto;
497 * pairwise_suite - Selected pairwise cipher suite (WPA_CIPHER_*)
499 * This is usually ignored if @wpa_ie is used.
501 unsigned int pairwise_suite;
504 * group_suite - Selected group cipher suite (WPA_CIPHER_*)
506 * This is usually ignored if @wpa_ie is used.
508 unsigned int group_suite;
511 * key_mgmt_suite - Selected key management suite (WPA_KEY_MGMT_*)
513 * This is usually ignored if @wpa_ie is used.
515 unsigned int key_mgmt_suite;
518 * auth_alg - Allowed authentication algorithms
519 * Bit field of WPA_AUTH_ALG_*
524 * mode - Operation mode (infra/ibss) IEEE80211_MODE_*
529 * wep_key - WEP keys for static WEP configuration
531 const u8 *wep_key[4];
534 * wep_key_len - WEP key length for static WEP configuration
536 size_t wep_key_len[4];
539 * wep_tx_keyidx - WEP TX key index for static WEP configuration
544 * mgmt_frame_protection - IEEE 802.11w management frame protection
546 enum mfp_options mgmt_frame_protection;
549 * ft_ies - IEEE 802.11r / FT information elements
550 * If the supplicant is using IEEE 802.11r (FT) and has the needed keys
551 * for fast transition, this parameter is set to include the IEs that
552 * are to be sent in the next FT Authentication Request message.
553 * update_ft_ies() handler is called to update the IEs for further
554 * FT messages in the sequence.
556 * The driver should use these IEs only if the target AP is advertising
557 * the same mobility domain as the one included in the MDIE here.
559 * In ap_scan=2 mode, the driver can use these IEs when moving to a new
560 * AP after the initial association. These IEs can only be used if the
561 * target AP is advertising support for FT and is using the same MDIE
562 * and SSID as the current AP.
564 * The driver is responsible for reporting the FT IEs received from the
565 * AP's response using wpa_supplicant_event() with EVENT_FT_RESPONSE
566 * type. update_ft_ies() handler will then be called with the FT IEs to
567 * include in the next frame in the authentication sequence.
572 * ft_ies_len - Length of ft_ies in bytes
577 * ft_md - FT Mobility domain (6 octets) (also included inside ft_ies)
579 * This value is provided to allow the driver interface easier access
580 * to the current mobility domain. This value is set to %NULL if no
581 * mobility domain is currently active.
586 * passphrase - RSN passphrase for PSK
588 * This value is made available only for WPA/WPA2-Personal (PSK) and
589 * only for drivers that set WPA_DRIVER_FLAGS_4WAY_HANDSHAKE. This is
590 * the 8..63 character ASCII passphrase, if available. Please note that
591 * this can be %NULL if passphrase was not used to generate the PSK. In
592 * that case, the psk field must be used to fetch the PSK.
594 const char *passphrase;
597 * psk - RSN PSK (alternative for passphrase for PSK)
599 * This value is made available only for WPA/WPA2-Personal (PSK) and
600 * only for drivers that set WPA_DRIVER_FLAGS_4WAY_HANDSHAKE. This is
601 * the 32-octet (256-bit) PSK, if available. The driver wrapper should
602 * be prepared to handle %NULL value as an error.
607 * drop_unencrypted - Enable/disable unencrypted frame filtering
609 * Configure the driver to drop all non-EAPOL frames (both receive and
610 * transmit paths). Unencrypted EAPOL frames (ethertype 0x888e) must
611 * still be allowed for key negotiation.
613 int drop_unencrypted;
616 * prev_bssid - Previously used BSSID in this ESS
618 * When not %NULL, this is a request to use reassociation instead of
621 const u8 *prev_bssid;
626 * If the driver needs to do special configuration for WPS association,
627 * this variable provides more information on what type of association
628 * is being requested. Most drivers should not need ot use this.
633 * p2p - Whether this connection is a P2P group
638 * uapsd - UAPSD parameters for the network
639 * -1 = do not change defaults
640 * AP mode: 1 = enabled, 0 = disabled
641 * STA mode: bits 0..3 UAPSD enabled for VO,VI,BK,BE
646 * fixed_bssid - Whether to force this BSSID in IBSS mode
647 * 1 = Fix this BSSID and prevent merges.
648 * 0 = Do not fix BSSID.
653 * disable_ht - Disable HT (IEEE 802.11n) for this connection
658 * HT Capabilities over-rides. Only bits set in the mask will be used,
659 * and not all values are used by the kernel anyway. Currently, MCS,
660 * MPDU and MSDU fields are used.
662 const u8 *htcaps; /* struct ieee80211_ht_capabilities * */
663 const u8 *htcaps_mask; /* struct ieee80211_ht_capabilities * */
665 #ifdef CONFIG_VHT_OVERRIDES
667 * disable_vht - Disable VHT for this connection
672 * VHT capability overrides.
674 const struct ieee80211_vht_capabilities *vhtcaps;
675 const struct ieee80211_vht_capabilities *vhtcaps_mask;
676 #endif /* CONFIG_VHT_OVERRIDES */
681 HIDDEN_SSID_ZERO_LEN,
682 HIDDEN_SSID_ZERO_CONTENTS
685 struct wpa_driver_ap_params {
687 * head - Beacon head from IEEE 802.11 header to IEs before TIM IE
692 * head_len - Length of the head buffer in octets
697 * tail - Beacon tail following TIM IE
702 * tail_len - Length of the tail buffer in octets
707 * dtim_period - DTIM period
712 * beacon_int - Beacon interval
717 * basic_rates: -1 terminated array of basic rates in 100 kbps
719 * This parameter can be used to set a specific basic rate set for the
720 * BSS. If %NULL, default basic rate set is used.
725 * proberesp - Probe Response template
727 * This is used by drivers that reply to Probe Requests internally in
728 * AP mode and require the full Probe Response template.
733 * proberesp_len - Length of the proberesp buffer in octets
735 size_t proberesp_len;
738 * ssid - The SSID to use in Beacon/Probe Response frames
743 * ssid_len - Length of the SSID (1..32)
748 * hide_ssid - Whether to hide the SSID
750 enum hide_ssid hide_ssid;
753 * pairwise_ciphers - WPA_CIPHER_* bitfield
755 unsigned int pairwise_ciphers;
758 * group_cipher - WPA_CIPHER_*
760 unsigned int group_cipher;
763 * key_mgmt_suites - WPA_KEY_MGMT_* bitfield
765 unsigned int key_mgmt_suites;
768 * auth_algs - WPA_AUTH_ALG_* bitfield
770 unsigned int auth_algs;
773 * wpa_version - WPA_PROTO_* bitfield
775 unsigned int wpa_version;
778 * privacy - Whether privacy is used in the BSS
783 * beacon_ies - WPS/P2P IE(s) for Beacon frames
785 * This is used to add IEs like WPS IE and P2P IE by drivers that do
786 * not use the full Beacon template.
788 const struct wpabuf *beacon_ies;
791 * proberesp_ies - P2P/WPS IE(s) for Probe Response frames
793 * This is used to add IEs like WPS IE and P2P IE by drivers that
794 * reply to Probe Request frames internally.
796 const struct wpabuf *proberesp_ies;
799 * assocresp_ies - WPS IE(s) for (Re)Association Response frames
801 * This is used to add IEs like WPS IE by drivers that reply to
802 * (Re)Association Request frames internally.
804 const struct wpabuf *assocresp_ies;
807 * isolate - Whether to isolate frames between associated stations
809 * If this is non-zero, the AP is requested to disable forwarding of
810 * frames between associated stations.
815 * cts_protect - Whether CTS protection is enabled
820 * preamble - Whether short preamble is enabled
825 * short_slot_time - Whether short slot time is enabled
827 * 0 = short slot time disable, 1 = short slot time enabled, -1 = do
828 * not set (e.g., when 802.11g mode is not in use)
833 * ht_opmode - HT operation mode or -1 if HT not in use
838 * interworking - Whether Interworking is enabled
843 * hessid - Homogeneous ESS identifier or %NULL if not set
848 * access_network_type - Access Network Type (0..15)
850 * This is used for filtering Probe Request frames when Interworking is
853 u8 access_network_type;
856 * ap_max_inactivity - Timeout in seconds to detect STA's inactivity
858 * This is used by driver which advertises this capability.
860 int ap_max_inactivity;
863 * disable_dgaf - Whether group-addressed frames are disabled
868 * osen - Whether OSEN security is enabled
873 * freq - Channel parameters for dynamic bandwidth changes
875 struct hostapd_freq_params *freq;
879 * struct wpa_driver_capa - Driver capability information
881 struct wpa_driver_capa {
882 #define WPA_DRIVER_CAPA_KEY_MGMT_WPA 0x00000001
883 #define WPA_DRIVER_CAPA_KEY_MGMT_WPA2 0x00000002
884 #define WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK 0x00000004
885 #define WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK 0x00000008
886 #define WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE 0x00000010
887 #define WPA_DRIVER_CAPA_KEY_MGMT_FT 0x00000020
888 #define WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK 0x00000040
889 #define WPA_DRIVER_CAPA_KEY_MGMT_WAPI_PSK 0x00000080
890 unsigned int key_mgmt;
892 #define WPA_DRIVER_CAPA_ENC_WEP40 0x00000001
893 #define WPA_DRIVER_CAPA_ENC_WEP104 0x00000002
894 #define WPA_DRIVER_CAPA_ENC_TKIP 0x00000004
895 #define WPA_DRIVER_CAPA_ENC_CCMP 0x00000008
896 #define WPA_DRIVER_CAPA_ENC_WEP128 0x00000010
897 #define WPA_DRIVER_CAPA_ENC_GCMP 0x00000020
898 #define WPA_DRIVER_CAPA_ENC_GCMP_256 0x00000040
899 #define WPA_DRIVER_CAPA_ENC_CCMP_256 0x00000080
900 #define WPA_DRIVER_CAPA_ENC_BIP 0x00000100
901 #define WPA_DRIVER_CAPA_ENC_BIP_GMAC_128 0x00000200
902 #define WPA_DRIVER_CAPA_ENC_BIP_GMAC_256 0x00000400
903 #define WPA_DRIVER_CAPA_ENC_BIP_CMAC_256 0x00000800
904 #define WPA_DRIVER_CAPA_ENC_GTK_NOT_USED 0x00001000
907 #define WPA_DRIVER_AUTH_OPEN 0x00000001
908 #define WPA_DRIVER_AUTH_SHARED 0x00000002
909 #define WPA_DRIVER_AUTH_LEAP 0x00000004
912 /* Driver generated WPA/RSN IE */
913 #define WPA_DRIVER_FLAGS_DRIVER_IE 0x00000001
914 /* Driver needs static WEP key setup after association command */
915 #define WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC 0x00000002
916 /* Driver takes care of all DFS operations */
917 #define WPA_DRIVER_FLAGS_DFS_OFFLOAD 0x00000004
918 /* Driver takes care of RSN 4-way handshake internally; PMK is configured with
919 * struct wpa_driver_ops::set_key using alg = WPA_ALG_PMK */
920 #define WPA_DRIVER_FLAGS_4WAY_HANDSHAKE 0x00000008
921 #define WPA_DRIVER_FLAGS_WIRED 0x00000010
922 /* Driver provides separate commands for authentication and association (SME in
923 * wpa_supplicant). */
924 #define WPA_DRIVER_FLAGS_SME 0x00000020
925 /* Driver supports AP mode */
926 #define WPA_DRIVER_FLAGS_AP 0x00000040
927 /* Driver needs static WEP key setup after association has been completed */
928 #define WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE 0x00000080
929 /* Driver supports dynamic HT 20/40 MHz channel changes during BSS lifetime */
930 #define WPA_DRIVER_FLAGS_HT_2040_COEX 0x00000100
931 /* Driver supports concurrent P2P operations */
932 #define WPA_DRIVER_FLAGS_P2P_CONCURRENT 0x00000200
934 * Driver uses the initial interface as a dedicated management interface, i.e.,
935 * it cannot be used for P2P group operations or non-P2P purposes.
937 #define WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE 0x00000400
938 /* This interface is P2P capable (P2P GO or P2P Client) */
939 #define WPA_DRIVER_FLAGS_P2P_CAPABLE 0x00000800
940 /* Driver supports station and key removal when stopping an AP */
941 #define WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT 0x00001000
943 * Driver uses the initial interface for P2P management interface and non-P2P
944 * purposes (e.g., connect to infra AP), but this interface cannot be used for
945 * P2P group operations.
947 #define WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P 0x00002000
949 * Driver is known to use sane error codes, i.e., when it indicates that
950 * something (e.g., association) fails, there was indeed a failure and the
951 * operation does not end up getting completed successfully later.
953 #define WPA_DRIVER_FLAGS_SANE_ERROR_CODES 0x00004000
954 /* Driver supports off-channel TX */
955 #define WPA_DRIVER_FLAGS_OFFCHANNEL_TX 0x00008000
956 /* Driver indicates TX status events for EAPOL Data frames */
957 #define WPA_DRIVER_FLAGS_EAPOL_TX_STATUS 0x00010000
958 /* Driver indicates TX status events for Deauth/Disassoc frames */
959 #define WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS 0x00020000
960 /* Driver supports roaming (BSS selection) in firmware */
961 #define WPA_DRIVER_FLAGS_BSS_SELECTION 0x00040000
962 /* Driver supports operating as a TDLS peer */
963 #define WPA_DRIVER_FLAGS_TDLS_SUPPORT 0x00080000
964 /* Driver requires external TDLS setup/teardown/discovery */
965 #define WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP 0x00100000
966 /* Driver indicates support for Probe Response offloading in AP mode */
967 #define WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD 0x00200000
968 /* Driver supports U-APSD in AP mode */
969 #define WPA_DRIVER_FLAGS_AP_UAPSD 0x00400000
970 /* Driver supports inactivity timer in AP mode */
971 #define WPA_DRIVER_FLAGS_INACTIVITY_TIMER 0x00800000
972 /* Driver expects user space implementation of MLME in AP mode */
973 #define WPA_DRIVER_FLAGS_AP_MLME 0x01000000
974 /* Driver supports SAE with user space SME */
975 #define WPA_DRIVER_FLAGS_SAE 0x02000000
976 /* Driver makes use of OBSS scan mechanism in wpa_supplicant */
977 #define WPA_DRIVER_FLAGS_OBSS_SCAN 0x04000000
978 /* Driver supports IBSS (Ad-hoc) mode */
979 #define WPA_DRIVER_FLAGS_IBSS 0x08000000
980 /* Driver supports radar detection */
981 #define WPA_DRIVER_FLAGS_RADAR 0x10000000
982 /* Driver supports a dedicated interface for P2P Device */
983 #define WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE 0x20000000
984 /* Driver supports QoS Mapping */
985 #define WPA_DRIVER_FLAGS_QOS_MAPPING 0x40000000
986 /* Driver supports CSA in AP mode */
987 #define WPA_DRIVER_FLAGS_AP_CSA 0x80000000
991 int max_sched_scan_ssids;
992 int sched_scan_supported;
996 * max_remain_on_chan - Maximum remain-on-channel duration in msec
998 unsigned int max_remain_on_chan;
1001 * max_stations - Maximum number of associated stations the driver
1002 * supports in AP mode
1004 unsigned int max_stations;
1007 * probe_resp_offloads - Bitmap of supported protocols by the driver
1008 * for Probe Response offloading.
1010 /* Driver Probe Response offloading support for WPS ver. 1 */
1011 #define WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS 0x00000001
1012 /* Driver Probe Response offloading support for WPS ver. 2 */
1013 #define WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2 0x00000002
1014 /* Driver Probe Response offloading support for P2P */
1015 #define WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P 0x00000004
1016 /* Driver Probe Response offloading support for IEEE 802.11u (Interworking) */
1017 #define WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING 0x00000008
1018 unsigned int probe_resp_offloads;
1020 unsigned int max_acl_mac_addrs;
1023 * Number of supported concurrent channels
1025 unsigned int num_multichan_concurrent;
1028 * extended_capa - extended capabilities in driver/device
1030 * Must be allocated and freed by driver and the pointers must be
1031 * valid for the lifetime of the driver, i.e., freed in deinit()
1033 const u8 *extended_capa, *extended_capa_mask;
1034 unsigned int extended_capa_len;
1038 struct hostapd_data;
1040 struct hostap_sta_driver_data {
1041 unsigned long rx_packets, tx_packets, rx_bytes, tx_bytes;
1042 unsigned long current_tx_rate;
1043 unsigned long inactive_msec;
1044 unsigned long flags;
1045 unsigned long num_ps_buf_frames;
1046 unsigned long tx_retry_failed;
1047 unsigned long tx_retry_count;
1052 struct hostapd_sta_add_params {
1056 const u8 *supp_rates;
1057 size_t supp_rates_len;
1058 u16 listen_interval;
1059 const struct ieee80211_ht_capabilities *ht_capabilities;
1060 const struct ieee80211_vht_capabilities *vht_capabilities;
1061 int vht_opmode_enabled;
1063 u32 flags; /* bitmask of WPA_STA_* flags */
1064 int set; /* Set STA parameters instead of add */
1066 const u8 *ext_capab;
1067 size_t ext_capab_len;
1068 const u8 *supp_channels;
1069 size_t supp_channels_len;
1070 const u8 *supp_oper_classes;
1071 size_t supp_oper_classes_len;
1074 struct hostapd_freq_params {
1080 int sec_channel_offset; /* 0 = HT40 disabled, -1 = HT40 enabled,
1081 * secondary channel below primary, 1 = HT40
1082 * enabled, secondary channel above primary */
1087 /* valid for both HT and VHT, center_freq2 is non-zero
1088 * only for bandwidth 80 and an 80+80 channel */
1089 int center_freq1, center_freq2;
1093 struct mac_address {
1097 struct hostapd_acl_params {
1099 unsigned int num_mac_acl;
1100 struct mac_address mac_acl[0];
1103 enum wpa_driver_if_type {
1105 * WPA_IF_STATION - Station mode interface
1110 * WPA_IF_AP_VLAN - AP mode VLAN interface
1112 * This interface shares its address and Beacon frame with the main
1118 * WPA_IF_AP_BSS - AP mode BSS interface
1120 * This interface has its own address and Beacon frame.
1125 * WPA_IF_P2P_GO - P2P Group Owner
1130 * WPA_IF_P2P_CLIENT - P2P Client
1135 * WPA_IF_P2P_GROUP - P2P Group interface (will become either
1136 * WPA_IF_P2P_GO or WPA_IF_P2P_CLIENT, but the role is not yet known)
1141 * WPA_IF_P2P_DEVICE - P2P Device interface is used to indentify the
1142 * abstracted P2P Device function in the driver
1147 struct wpa_init_params {
1153 const char *test_socket;
1154 int use_pae_group_addr;
1158 u8 *own_addr; /* buffer for writing own MAC address */
1162 struct wpa_bss_params {
1163 /** Interface name (for multi-SSID/VLAN support) */
1165 /** Whether IEEE 802.1X or WPA/WPA2 is enabled */
1174 enum mfp_options ieee80211w;
1177 #define WPA_STA_AUTHORIZED BIT(0)
1178 #define WPA_STA_WMM BIT(1)
1179 #define WPA_STA_SHORT_PREAMBLE BIT(2)
1180 #define WPA_STA_MFP BIT(3)
1181 #define WPA_STA_TDLS_PEER BIT(4)
1194 WNM_SLEEP_ENTER_CONFIRM,
1195 WNM_SLEEP_ENTER_FAIL,
1196 WNM_SLEEP_EXIT_CONFIRM,
1197 WNM_SLEEP_EXIT_FAIL,
1198 WNM_SLEEP_TFS_REQ_IE_ADD, /* STA requests driver to add TFS req IE */
1199 WNM_SLEEP_TFS_REQ_IE_NONE, /* STA requests empty TFS req IE */
1200 WNM_SLEEP_TFS_REQ_IE_SET, /* AP requests driver to set TFS req IE for
1202 WNM_SLEEP_TFS_RESP_IE_ADD, /* AP requests driver to add TFS resp IE
1204 WNM_SLEEP_TFS_RESP_IE_NONE, /* AP requests empty TFS resp IE */
1205 WNM_SLEEP_TFS_RESP_IE_SET, /* AP requests driver to set TFS resp IE
1207 WNM_SLEEP_TFS_IE_DEL /* AP delete the TFS IE */
1210 /* enum chan_width - Channel width definitions */
1222 * struct wpa_signal_info - Information about channel signal quality
1224 struct wpa_signal_info {
1226 int above_threshold;
1231 enum chan_width chanwidth;
1237 * struct beacon_data - Beacon data
1238 * @head: Head portion of Beacon frame (before TIM IE)
1239 * @tail: Tail portion of Beacon frame (after TIM IE)
1240 * @beacon_ies: Extra information element(s) to add into Beacon frames or %NULL
1241 * @proberesp_ies: Extra information element(s) to add into Probe Response
1243 * @assocresp_ies: Extra information element(s) to add into (Re)Association
1244 * Response frames or %NULL
1245 * @probe_resp: Probe Response frame template
1246 * @head_len: Length of @head
1247 * @tail_len: Length of @tail
1248 * @beacon_ies_len: Length of beacon_ies in octets
1249 * @proberesp_ies_len: Length of proberesp_ies in octets
1250 * @proberesp_ies_len: Length of proberesp_ies in octets
1251 * @probe_resp_len: Length of probe response template (@probe_resp)
1253 struct beacon_data {
1260 size_t head_len, tail_len;
1261 size_t beacon_ies_len;
1262 size_t proberesp_ies_len;
1263 size_t assocresp_ies_len;
1264 size_t probe_resp_len;
1268 * struct csa_settings - Settings for channel switch command
1269 * @cs_count: Count in Beacon frames (TBTT) to perform the switch
1270 * @block_tx: 1 - block transmission for CSA period
1271 * @freq_params: Next channel frequency parameter
1272 * @beacon_csa: Beacon/probe resp/asooc resp info for CSA period
1273 * @beacon_after: Next beacon/probe resp/asooc resp info
1274 * @counter_offset_beacon: Offset to the count field in beacon's tail
1275 * @counter_offset_presp: Offset to the count field in probe resp.
1277 struct csa_settings {
1281 struct hostapd_freq_params freq_params;
1282 struct beacon_data beacon_csa;
1283 struct beacon_data beacon_after;
1285 u16 counter_offset_beacon;
1286 u16 counter_offset_presp;
1289 /* TDLS peer capabilities for send_tdls_mgmt() */
1290 enum tdls_peer_capability {
1291 TDLS_PEER_HT = BIT(0),
1292 TDLS_PEER_VHT = BIT(1),
1293 TDLS_PEER_WMM = BIT(2),
1297 * struct wpa_driver_ops - Driver interface API definition
1299 * This structure defines the API that each driver interface needs to implement
1300 * for core wpa_supplicant code. All driver specific functionality is captured
1303 struct wpa_driver_ops {
1304 /** Name of the driver interface */
1306 /** One line description of the driver interface */
1310 * get_bssid - Get the current BSSID
1311 * @priv: private driver interface data
1312 * @bssid: buffer for BSSID (ETH_ALEN = 6 bytes)
1314 * Returns: 0 on success, -1 on failure
1316 * Query kernel driver for the current BSSID and copy it to bssid.
1317 * Setting bssid to 00:00:00:00:00:00 is recommended if the STA is not
1320 int (*get_bssid)(void *priv, u8 *bssid);
1323 * get_ssid - Get the current SSID
1324 * @priv: private driver interface data
1325 * @ssid: buffer for SSID (at least 32 bytes)
1327 * Returns: Length of the SSID on success, -1 on failure
1329 * Query kernel driver for the current SSID and copy it to ssid.
1330 * Returning zero is recommended if the STA is not associated.
1332 * Note: SSID is an array of octets, i.e., it is not nul terminated and
1333 * can, at least in theory, contain control characters (including nul)
1334 * and as such, should be processed as binary data, not a printable
1337 int (*get_ssid)(void *priv, u8 *ssid);
1340 * set_key - Configure encryption key
1341 * @ifname: Interface name (for multi-SSID/VLAN support)
1342 * @priv: private driver interface data
1343 * @alg: encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1344 * %WPA_ALG_TKIP, %WPA_ALG_CCMP, %WPA_ALG_IGTK, %WPA_ALG_PMK,
1345 * %WPA_ALG_GCMP, %WPA_ALG_GCMP_256, %WPA_ALG_CCMP_256,
1346 * %WPA_ALG_BIP_GMAC_128, %WPA_ALG_BIP_GMAC_256,
1347 * %WPA_ALG_BIP_CMAC_256);
1348 * %WPA_ALG_NONE clears the key.
1349 * @addr: Address of the peer STA (BSSID of the current AP when setting
1350 * pairwise key in station mode), ff:ff:ff:ff:ff:ff for
1351 * broadcast keys, %NULL for default keys that are used both for
1352 * broadcast and unicast; when clearing keys, %NULL is used to
1353 * indicate that both the broadcast-only and default key of the
1354 * specified key index is to be cleared
1355 * @key_idx: key index (0..3), usually 0 for unicast keys; 0..4095 for
1357 * @set_tx: configure this key as the default Tx key (only used when
1358 * driver does not support separate unicast/individual key
1359 * @seq: sequence number/packet number, seq_len octets, the next
1360 * packet number to be used for in replay protection; configured
1361 * for Rx keys (in most cases, this is only used with broadcast
1362 * keys and set to zero for unicast keys); %NULL if not set
1363 * @seq_len: length of the seq, depends on the algorithm:
1364 * TKIP: 6 octets, CCMP/GCMP: 6 octets, IGTK: 6 octets
1365 * @key: key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1367 * @key_len: length of the key buffer in octets (WEP: 5 or 13,
1368 * TKIP: 32, CCMP/GCMP: 16, IGTK: 16)
1370 * Returns: 0 on success, -1 on failure
1372 * Configure the given key for the kernel driver. If the driver
1373 * supports separate individual keys (4 default keys + 1 individual),
1374 * addr can be used to determine whether the key is default or
1375 * individual. If only 4 keys are supported, the default key with key
1376 * index 0 is used as the individual key. STA must be configured to use
1377 * it as the default Tx key (set_tx is set) and accept Rx for all the
1378 * key indexes. In most cases, WPA uses only key indexes 1 and 2 for
1379 * broadcast keys, so key index 0 is available for this kind of
1382 * Please note that TKIP keys include separate TX and RX MIC keys and
1383 * some drivers may expect them in different order than wpa_supplicant
1384 * is using. If the TX/RX keys are swapped, all TKIP encrypted packets
1385 * will trigger Michael MIC errors. This can be fixed by changing the
1386 * order of MIC keys by swapping te bytes 16..23 and 24..31 of the key
1387 * in driver_*.c set_key() implementation, see driver_ndis.c for an
1388 * example on how this can be done.
1390 int (*set_key)(const char *ifname, void *priv, enum wpa_alg alg,
1391 const u8 *addr, int key_idx, int set_tx,
1392 const u8 *seq, size_t seq_len,
1393 const u8 *key, size_t key_len);
1396 * init - Initialize driver interface
1397 * @ctx: context to be used when calling wpa_supplicant functions,
1398 * e.g., wpa_supplicant_event()
1399 * @ifname: interface name, e.g., wlan0
1401 * Returns: Pointer to private data, %NULL on failure
1403 * Initialize driver interface, including event processing for kernel
1404 * driver events (e.g., associated, scan results, Michael MIC failure).
1405 * This function can allocate a private configuration data area for
1406 * @ctx, file descriptor, interface name, etc. information that may be
1407 * needed in future driver operations. If this is not used, non-NULL
1408 * value will need to be returned because %NULL is used to indicate
1409 * failure. The returned value will be used as 'void *priv' data for
1410 * all other driver_ops functions.
1412 * The main event loop (eloop.c) of wpa_supplicant can be used to
1413 * register callback for read sockets (eloop_register_read_sock()).
1415 * See below for more information about events and
1416 * wpa_supplicant_event() function.
1418 void * (*init)(void *ctx, const char *ifname);
1421 * deinit - Deinitialize driver interface
1422 * @priv: private driver interface data from init()
1424 * Shut down driver interface and processing of driver events. Free
1425 * private data buffer if one was allocated in init() handler.
1427 void (*deinit)(void *priv);
1430 * set_param - Set driver configuration parameters
1431 * @priv: private driver interface data from init()
1432 * @param: driver specific configuration parameters
1434 * Returns: 0 on success, -1 on failure
1436 * Optional handler for notifying driver interface about configuration
1437 * parameters (driver_param).
1439 int (*set_param)(void *priv, const char *param);
1442 * set_countermeasures - Enable/disable TKIP countermeasures
1443 * @priv: private driver interface data
1444 * @enabled: 1 = countermeasures enabled, 0 = disabled
1446 * Returns: 0 on success, -1 on failure
1448 * Configure TKIP countermeasures. When these are enabled, the driver
1449 * should drop all received and queued frames that are using TKIP.
1451 int (*set_countermeasures)(void *priv, int enabled);
1454 * deauthenticate - Request driver to deauthenticate
1455 * @priv: private driver interface data
1456 * @addr: peer address (BSSID of the AP)
1457 * @reason_code: 16-bit reason code to be sent in the deauthentication
1460 * Returns: 0 on success, -1 on failure
1462 int (*deauthenticate)(void *priv, const u8 *addr, int reason_code);
1465 * associate - Request driver to associate
1466 * @priv: private driver interface data
1467 * @params: association parameters
1469 * Returns: 0 on success, -1 on failure
1471 int (*associate)(void *priv,
1472 struct wpa_driver_associate_params *params);
1475 * add_pmkid - Add PMKSA cache entry to the driver
1476 * @priv: private driver interface data
1477 * @bssid: BSSID for the PMKSA cache entry
1478 * @pmkid: PMKID for the PMKSA cache entry
1480 * Returns: 0 on success, -1 on failure
1482 * This function is called when a new PMK is received, as a result of
1483 * either normal authentication or RSN pre-authentication.
1485 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
1486 * associate(), add_pmkid() can be used to add new PMKSA cache entries
1487 * in the driver. If the driver uses wpa_ie from wpa_supplicant, this
1488 * driver_ops function does not need to be implemented. Likewise, if
1489 * the driver does not support WPA, this function is not needed.
1491 int (*add_pmkid)(void *priv, const u8 *bssid, const u8 *pmkid);
1494 * remove_pmkid - Remove PMKSA cache entry to the driver
1495 * @priv: private driver interface data
1496 * @bssid: BSSID for the PMKSA cache entry
1497 * @pmkid: PMKID for the PMKSA cache entry
1499 * Returns: 0 on success, -1 on failure
1501 * This function is called when the supplicant drops a PMKSA cache
1502 * entry for any reason.
1504 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
1505 * associate(), remove_pmkid() can be used to synchronize PMKSA caches
1506 * between the driver and wpa_supplicant. If the driver uses wpa_ie
1507 * from wpa_supplicant, this driver_ops function does not need to be
1508 * implemented. Likewise, if the driver does not support WPA, this
1509 * function is not needed.
1511 int (*remove_pmkid)(void *priv, const u8 *bssid, const u8 *pmkid);
1514 * flush_pmkid - Flush PMKSA cache
1515 * @priv: private driver interface data
1517 * Returns: 0 on success, -1 on failure
1519 * This function is called when the supplicant drops all PMKSA cache
1520 * entries for any reason.
1522 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
1523 * associate(), remove_pmkid() can be used to synchronize PMKSA caches
1524 * between the driver and wpa_supplicant. If the driver uses wpa_ie
1525 * from wpa_supplicant, this driver_ops function does not need to be
1526 * implemented. Likewise, if the driver does not support WPA, this
1527 * function is not needed.
1529 int (*flush_pmkid)(void *priv);
1532 * get_capa - Get driver capabilities
1533 * @priv: private driver interface data
1535 * Returns: 0 on success, -1 on failure
1537 * Get driver/firmware/hardware capabilities.
1539 int (*get_capa)(void *priv, struct wpa_driver_capa *capa);
1542 * poll - Poll driver for association information
1543 * @priv: private driver interface data
1545 * This is an option callback that can be used when the driver does not
1546 * provide event mechanism for association events. This is called when
1547 * receiving WPA EAPOL-Key messages that require association
1548 * information. The driver interface is supposed to generate associnfo
1549 * event before returning from this callback function. In addition, the
1550 * driver interface should generate an association event after having
1551 * sent out associnfo.
1553 void (*poll)(void *priv);
1556 * get_ifname - Get interface name
1557 * @priv: private driver interface data
1559 * Returns: Pointer to the interface name. This can differ from the
1560 * interface name used in init() call. Init() is called first.
1562 * This optional function can be used to allow the driver interface to
1563 * replace the interface name with something else, e.g., based on an
1564 * interface mapping from a more descriptive name.
1566 const char * (*get_ifname)(void *priv);
1569 * get_mac_addr - Get own MAC address
1570 * @priv: private driver interface data
1572 * Returns: Pointer to own MAC address or %NULL on failure
1574 * This optional function can be used to get the own MAC address of the
1575 * device from the driver interface code. This is only needed if the
1576 * l2_packet implementation for the OS does not provide easy access to
1578 const u8 * (*get_mac_addr)(void *priv);
1581 * send_eapol - Optional function for sending EAPOL packets
1582 * @priv: private driver interface data
1583 * @dest: Destination MAC address
1585 * @data: EAPOL packet starting with IEEE 802.1X header
1586 * @data_len: Size of the EAPOL packet
1588 * Returns: 0 on success, -1 on failure
1590 * This optional function can be used to override l2_packet operations
1591 * with driver specific functionality. If this function pointer is set,
1592 * l2_packet module is not used at all and the driver interface code is
1593 * responsible for receiving and sending all EAPOL packets. The
1594 * received EAPOL packets are sent to core code with EVENT_EAPOL_RX
1595 * event. The driver interface is required to implement get_mac_addr()
1596 * handler if send_eapol() is used.
1598 int (*send_eapol)(void *priv, const u8 *dest, u16 proto,
1599 const u8 *data, size_t data_len);
1602 * set_operstate - Sets device operating state to DORMANT or UP
1603 * @priv: private driver interface data
1604 * @state: 0 = dormant, 1 = up
1605 * Returns: 0 on success, -1 on failure
1607 * This is an optional function that can be used on operating systems
1608 * that support a concept of controlling network device state from user
1609 * space applications. This function, if set, gets called with
1610 * state = 1 when authentication has been completed and with state = 0
1611 * when connection is lost.
1613 int (*set_operstate)(void *priv, int state);
1616 * mlme_setprotection - MLME-SETPROTECTION.request primitive
1617 * @priv: Private driver interface data
1618 * @addr: Address of the station for which to set protection (may be
1619 * %NULL for group keys)
1620 * @protect_type: MLME_SETPROTECTION_PROTECT_TYPE_*
1621 * @key_type: MLME_SETPROTECTION_KEY_TYPE_*
1622 * Returns: 0 on success, -1 on failure
1624 * This is an optional function that can be used to set the driver to
1625 * require protection for Tx and/or Rx frames. This uses the layer
1626 * interface defined in IEEE 802.11i-2004 clause 10.3.22.1
1627 * (MLME-SETPROTECTION.request). Many drivers do not use explicit
1628 * set protection operation; instead, they set protection implicitly
1629 * based on configured keys.
1631 int (*mlme_setprotection)(void *priv, const u8 *addr, int protect_type,
1635 * get_hw_feature_data - Get hardware support data (channels and rates)
1636 * @priv: Private driver interface data
1637 * @num_modes: Variable for returning the number of returned modes
1638 * flags: Variable for returning hardware feature flags
1639 * Returns: Pointer to allocated hardware data on success or %NULL on
1640 * failure. Caller is responsible for freeing this.
1642 struct hostapd_hw_modes * (*get_hw_feature_data)(void *priv,
1647 * send_mlme - Send management frame from MLME
1648 * @priv: Private driver interface data
1649 * @data: IEEE 802.11 management frame with IEEE 802.11 header
1650 * @data_len: Size of the management frame
1651 * @noack: Do not wait for this frame to be acked (disable retries)
1652 * Returns: 0 on success, -1 on failure
1654 int (*send_mlme)(void *priv, const u8 *data, size_t data_len,
1658 * update_ft_ies - Update FT (IEEE 802.11r) IEs
1659 * @priv: Private driver interface data
1660 * @md: Mobility domain (2 octets) (also included inside ies)
1661 * @ies: FT IEs (MDIE, FTIE, ...) or %NULL to remove IEs
1662 * @ies_len: Length of FT IEs in bytes
1663 * Returns: 0 on success, -1 on failure
1665 * The supplicant uses this callback to let the driver know that keying
1666 * material for FT is available and that the driver can use the
1667 * provided IEs in the next message in FT authentication sequence.
1669 * This function is only needed for driver that support IEEE 802.11r
1670 * (Fast BSS Transition).
1672 int (*update_ft_ies)(void *priv, const u8 *md, const u8 *ies,
1676 * send_ft_action - Send FT Action frame (IEEE 802.11r)
1677 * @priv: Private driver interface data
1678 * @action: Action field value
1679 * @target_ap: Target AP address
1680 * @ies: FT IEs (MDIE, FTIE, ...) (FT Request action frame body)
1681 * @ies_len: Length of FT IEs in bytes
1682 * Returns: 0 on success, -1 on failure
1684 * The supplicant uses this callback to request the driver to transmit
1685 * an FT Action frame (action category 6) for over-the-DS fast BSS
1688 int (*send_ft_action)(void *priv, u8 action, const u8 *target_ap,
1689 const u8 *ies, size_t ies_len);
1692 * get_scan_results2 - Fetch the latest scan results
1693 * @priv: private driver interface data
1695 * Returns: Allocated buffer of scan results (caller is responsible for
1696 * freeing the data structure) on success, NULL on failure
1698 struct wpa_scan_results * (*get_scan_results2)(void *priv);
1701 * set_country - Set country
1702 * @priv: Private driver interface data
1703 * @alpha2: country to which to switch to
1704 * Returns: 0 on success, -1 on failure
1706 * This function is for drivers which support some form
1707 * of setting a regulatory domain.
1709 int (*set_country)(void *priv, const char *alpha2);
1712 * get_country - Get country
1713 * @priv: Private driver interface data
1714 * @alpha2: Buffer for returning country code (at least 3 octets)
1715 * Returns: 0 on success, -1 on failure
1717 int (*get_country)(void *priv, char *alpha2);
1720 * global_init - Global driver initialization
1721 * Returns: Pointer to private data (global), %NULL on failure
1723 * This optional function is called to initialize the driver wrapper
1724 * for global data, i.e., data that applies to all interfaces. If this
1725 * function is implemented, global_deinit() will also need to be
1726 * implemented to free the private data. The driver will also likely
1727 * use init2() function instead of init() to get the pointer to global
1728 * data available to per-interface initializer.
1730 void * (*global_init)(void);
1733 * global_deinit - Global driver deinitialization
1734 * @priv: private driver global data from global_init()
1736 * Terminate any global driver related functionality and free the
1737 * global data structure.
1739 void (*global_deinit)(void *priv);
1742 * init2 - Initialize driver interface (with global data)
1743 * @ctx: context to be used when calling wpa_supplicant functions,
1744 * e.g., wpa_supplicant_event()
1745 * @ifname: interface name, e.g., wlan0
1746 * @global_priv: private driver global data from global_init()
1747 * Returns: Pointer to private data, %NULL on failure
1749 * This function can be used instead of init() if the driver wrapper
1752 void * (*init2)(void *ctx, const char *ifname, void *global_priv);
1755 * get_interfaces - Get information about available interfaces
1756 * @global_priv: private driver global data from global_init()
1757 * Returns: Allocated buffer of interface information (caller is
1758 * responsible for freeing the data structure) on success, NULL on
1761 struct wpa_interface_info * (*get_interfaces)(void *global_priv);
1764 * scan2 - Request the driver to initiate scan
1765 * @priv: private driver interface data
1766 * @params: Scan parameters
1768 * Returns: 0 on success, -1 on failure
1770 * Once the scan results are ready, the driver should report scan
1771 * results event for wpa_supplicant which will eventually request the
1772 * results with wpa_driver_get_scan_results2().
1774 int (*scan2)(void *priv, struct wpa_driver_scan_params *params);
1777 * authenticate - Request driver to authenticate
1778 * @priv: private driver interface data
1779 * @params: authentication parameters
1780 * Returns: 0 on success, -1 on failure
1782 * This is an optional function that can be used with drivers that
1783 * support separate authentication and association steps, i.e., when
1784 * wpa_supplicant can act as the SME. If not implemented, associate()
1785 * function is expected to take care of IEEE 802.11 authentication,
1788 int (*authenticate)(void *priv,
1789 struct wpa_driver_auth_params *params);
1792 * set_ap - Set Beacon and Probe Response information for AP mode
1793 * @priv: Private driver interface data
1794 * @params: Parameters to use in AP mode
1796 * This function is used to configure Beacon template and/or extra IEs
1797 * to add for Beacon and Probe Response frames for the driver in
1798 * AP mode. The driver is responsible for building the full Beacon
1799 * frame by concatenating the head part with TIM IE generated by the
1800 * driver/firmware and finishing with the tail part. Depending on the
1801 * driver architectue, this can be done either by using the full
1802 * template or the set of additional IEs (e.g., WPS and P2P IE).
1803 * Similarly, Probe Response processing depends on the driver design.
1804 * If the driver (or firmware) takes care of replying to Probe Request
1805 * frames, the extra IEs provided here needs to be added to the Probe
1808 * Returns: 0 on success, -1 on failure
1810 int (*set_ap)(void *priv, struct wpa_driver_ap_params *params);
1813 * set_acl - Set ACL in AP mode
1814 * @priv: Private driver interface data
1815 * @params: Parameters to configure ACL
1816 * Returns: 0 on success, -1 on failure
1818 * This is used only for the drivers which support MAC address ACL.
1820 int (*set_acl)(void *priv, struct hostapd_acl_params *params);
1823 * hapd_init - Initialize driver interface (hostapd only)
1824 * @hapd: Pointer to hostapd context
1825 * @params: Configuration for the driver wrapper
1826 * Returns: Pointer to private data, %NULL on failure
1828 * This function is used instead of init() or init2() when the driver
1829 * wrapper is used with hostapd.
1831 void * (*hapd_init)(struct hostapd_data *hapd,
1832 struct wpa_init_params *params);
1835 * hapd_deinit - Deinitialize driver interface (hostapd only)
1836 * @priv: Private driver interface data from hapd_init()
1838 void (*hapd_deinit)(void *priv);
1841 * set_ieee8021x - Enable/disable IEEE 802.1X support (AP only)
1842 * @priv: Private driver interface data
1843 * @params: BSS parameters
1844 * Returns: 0 on success, -1 on failure
1846 * This is an optional function to configure the kernel driver to
1847 * enable/disable IEEE 802.1X support and set WPA/WPA2 parameters. This
1848 * can be left undefined (set to %NULL) if IEEE 802.1X support is
1849 * always enabled and the driver uses set_ap() to set WPA/RSN IE
1850 * for Beacon frames.
1852 * DEPRECATED - use set_ap() instead
1854 int (*set_ieee8021x)(void *priv, struct wpa_bss_params *params);
1857 * set_privacy - Enable/disable privacy (AP only)
1858 * @priv: Private driver interface data
1859 * @enabled: 1 = privacy enabled, 0 = disabled
1860 * Returns: 0 on success, -1 on failure
1862 * This is an optional function to configure privacy field in the
1863 * kernel driver for Beacon frames. This can be left undefined (set to
1864 * %NULL) if the driver uses the Beacon template from set_ap().
1866 * DEPRECATED - use set_ap() instead
1868 int (*set_privacy)(void *priv, int enabled);
1871 * get_seqnum - Fetch the current TSC/packet number (AP only)
1872 * @ifname: The interface name (main or virtual)
1873 * @priv: Private driver interface data
1874 * @addr: MAC address of the station or %NULL for group keys
1876 * @seq: Buffer for returning the latest used TSC/packet number
1877 * Returns: 0 on success, -1 on failure
1879 * This function is used to fetch the last used TSC/packet number for
1880 * a TKIP, CCMP, GCMP, or BIP/IGTK key. It is mainly used with group
1881 * keys, so there is no strict requirement on implementing support for
1882 * unicast keys (i.e., addr != %NULL).
1884 int (*get_seqnum)(const char *ifname, void *priv, const u8 *addr,
1888 * flush - Flush all association stations (AP only)
1889 * @priv: Private driver interface data
1890 * Returns: 0 on success, -1 on failure
1892 * This function requests the driver to disassociate all associated
1893 * stations. This function does not need to be implemented if the
1894 * driver does not process association frames internally.
1896 int (*flush)(void *priv);
1899 * set_generic_elem - Add IEs into Beacon/Probe Response frames (AP)
1900 * @priv: Private driver interface data
1901 * @elem: Information elements
1902 * @elem_len: Length of the elem buffer in octets
1903 * Returns: 0 on success, -1 on failure
1905 * This is an optional function to add information elements in the
1906 * kernel driver for Beacon and Probe Response frames. This can be left
1907 * undefined (set to %NULL) if the driver uses the Beacon template from
1910 * DEPRECATED - use set_ap() instead
1912 int (*set_generic_elem)(void *priv, const u8 *elem, size_t elem_len);
1915 * read_sta_data - Fetch station data
1916 * @priv: Private driver interface data
1917 * @data: Buffer for returning station information
1918 * @addr: MAC address of the station
1919 * Returns: 0 on success, -1 on failure
1921 int (*read_sta_data)(void *priv, struct hostap_sta_driver_data *data,
1925 * hapd_send_eapol - Send an EAPOL packet (AP only)
1926 * @priv: private driver interface data
1927 * @addr: Destination MAC address
1928 * @data: EAPOL packet starting with IEEE 802.1X header
1929 * @data_len: Length of the EAPOL packet in octets
1930 * @encrypt: Whether the frame should be encrypted
1931 * @own_addr: Source MAC address
1932 * @flags: WPA_STA_* flags for the destination station
1934 * Returns: 0 on success, -1 on failure
1936 int (*hapd_send_eapol)(void *priv, const u8 *addr, const u8 *data,
1937 size_t data_len, int encrypt,
1938 const u8 *own_addr, u32 flags);
1941 * sta_deauth - Deauthenticate a station (AP only)
1942 * @priv: Private driver interface data
1943 * @own_addr: Source address and BSSID for the Deauthentication frame
1944 * @addr: MAC address of the station to deauthenticate
1945 * @reason: Reason code for the Deauthentiation frame
1946 * Returns: 0 on success, -1 on failure
1948 * This function requests a specific station to be deauthenticated and
1949 * a Deauthentication frame to be sent to it.
1951 int (*sta_deauth)(void *priv, const u8 *own_addr, const u8 *addr,
1955 * sta_disassoc - Disassociate a station (AP only)
1956 * @priv: Private driver interface data
1957 * @own_addr: Source address and BSSID for the Disassociation frame
1958 * @addr: MAC address of the station to disassociate
1959 * @reason: Reason code for the Disassociation frame
1960 * Returns: 0 on success, -1 on failure
1962 * This function requests a specific station to be disassociated and
1963 * a Disassociation frame to be sent to it.
1965 int (*sta_disassoc)(void *priv, const u8 *own_addr, const u8 *addr,
1969 * sta_remove - Remove a station entry (AP only)
1970 * @priv: Private driver interface data
1971 * @addr: MAC address of the station to be removed
1972 * Returns: 0 on success, -1 on failure
1974 int (*sta_remove)(void *priv, const u8 *addr);
1977 * hapd_get_ssid - Get the current SSID (AP only)
1978 * @priv: Private driver interface data
1979 * @buf: Buffer for returning the SSID
1980 * @len: Maximum length of the buffer
1981 * Returns: Length of the SSID on success, -1 on failure
1983 * This function need not be implemented if the driver uses Beacon
1984 * template from set_ap() and does not reply to Probe Request frames.
1986 int (*hapd_get_ssid)(void *priv, u8 *buf, int len);
1989 * hapd_set_ssid - Set SSID (AP only)
1990 * @priv: Private driver interface data
1992 * @len: Length of the SSID in octets
1993 * Returns: 0 on success, -1 on failure
1995 * DEPRECATED - use set_ap() instead
1997 int (*hapd_set_ssid)(void *priv, const u8 *buf, int len);
2000 * hapd_set_countermeasures - Enable/disable TKIP countermeasures (AP)
2001 * @priv: Private driver interface data
2002 * @enabled: 1 = countermeasures enabled, 0 = disabled
2003 * Returns: 0 on success, -1 on failure
2005 * This need not be implemented if the driver does not take care of
2006 * association processing.
2008 int (*hapd_set_countermeasures)(void *priv, int enabled);
2011 * sta_add - Add a station entry
2012 * @priv: Private driver interface data
2013 * @params: Station parameters
2014 * Returns: 0 on success, -1 on failure
2016 * This function is used to add a station entry to the driver once the
2017 * station has completed association. This is only used if the driver
2018 * does not take care of association processing.
2020 * With TDLS, this function is also used to add or set (params->set 1)
2021 * TDLS peer entries.
2023 int (*sta_add)(void *priv, struct hostapd_sta_add_params *params);
2026 * get_inact_sec - Get station inactivity duration (AP only)
2027 * @priv: Private driver interface data
2028 * @addr: Station address
2029 * Returns: Number of seconds station has been inactive, -1 on failure
2031 int (*get_inact_sec)(void *priv, const u8 *addr);
2034 * sta_clear_stats - Clear station statistics (AP only)
2035 * @priv: Private driver interface data
2036 * @addr: Station address
2037 * Returns: 0 on success, -1 on failure
2039 int (*sta_clear_stats)(void *priv, const u8 *addr);
2042 * set_freq - Set channel/frequency (AP only)
2043 * @priv: Private driver interface data
2044 * @freq: Channel parameters
2045 * Returns: 0 on success, -1 on failure
2047 int (*set_freq)(void *priv, struct hostapd_freq_params *freq);
2050 * set_rts - Set RTS threshold
2051 * @priv: Private driver interface data
2052 * @rts: RTS threshold in octets
2053 * Returns: 0 on success, -1 on failure
2055 int (*set_rts)(void *priv, int rts);
2058 * set_frag - Set fragmentation threshold
2059 * @priv: Private driver interface data
2060 * @frag: Fragmentation threshold in octets
2061 * Returns: 0 on success, -1 on failure
2063 int (*set_frag)(void *priv, int frag);
2066 * sta_set_flags - Set station flags (AP only)
2067 * @priv: Private driver interface data
2068 * @addr: Station address
2069 * @total_flags: Bitmap of all WPA_STA_* flags currently set
2070 * @flags_or: Bitmap of WPA_STA_* flags to add
2071 * @flags_and: Bitmap of WPA_STA_* flags to us as a mask
2072 * Returns: 0 on success, -1 on failure
2074 int (*sta_set_flags)(void *priv, const u8 *addr,
2075 int total_flags, int flags_or, int flags_and);
2078 * set_tx_queue_params - Set TX queue parameters
2079 * @priv: Private driver interface data
2080 * @queue: Queue number (0 = VO, 1 = VI, 2 = BE, 3 = BK)
2084 * @burst_time: Maximum length for bursting in 0.1 msec units
2086 int (*set_tx_queue_params)(void *priv, int queue, int aifs, int cw_min,
2087 int cw_max, int burst_time);
2090 * if_add - Add a virtual interface
2091 * @priv: Private driver interface data
2092 * @type: Interface type
2093 * @ifname: Interface name for the new virtual interface
2094 * @addr: Local address to use for the interface or %NULL to use the
2095 * parent interface address
2096 * @bss_ctx: BSS context for %WPA_IF_AP_BSS interfaces
2097 * @drv_priv: Pointer for overwriting the driver context or %NULL if
2098 * not allowed (applies only to %WPA_IF_AP_BSS type)
2099 * @force_ifname: Buffer for returning an interface name that the
2100 * driver ended up using if it differs from the requested ifname
2101 * @if_addr: Buffer for returning the allocated interface address
2102 * (this may differ from the requested addr if the driver cannot
2103 * change interface address)
2104 * @bridge: Bridge interface to use or %NULL if no bridge configured
2105 * @use_existing: Whether to allow existing interface to be used
2106 * Returns: 0 on success, -1 on failure
2108 int (*if_add)(void *priv, enum wpa_driver_if_type type,
2109 const char *ifname, const u8 *addr, void *bss_ctx,
2110 void **drv_priv, char *force_ifname, u8 *if_addr,
2111 const char *bridge, int use_existing);
2114 * if_remove - Remove a virtual interface
2115 * @priv: Private driver interface data
2116 * @type: Interface type
2117 * @ifname: Interface name of the virtual interface to be removed
2118 * Returns: 0 on success, -1 on failure
2120 int (*if_remove)(void *priv, enum wpa_driver_if_type type,
2121 const char *ifname);
2124 * set_sta_vlan - Bind a station into a specific interface (AP only)
2125 * @priv: Private driver interface data
2126 * @ifname: Interface (main or virtual BSS or VLAN)
2127 * @addr: MAC address of the associated station
2129 * Returns: 0 on success, -1 on failure
2131 * This function is used to bind a station to a specific virtual
2132 * interface. It is only used if when virtual interfaces are supported,
2133 * e.g., to assign stations to different VLAN interfaces based on
2134 * information from a RADIUS server. This allows separate broadcast
2135 * domains to be used with a single BSS.
2137 int (*set_sta_vlan)(void *priv, const u8 *addr, const char *ifname,
2141 * commit - Optional commit changes handler (AP only)
2142 * @priv: driver private data
2143 * Returns: 0 on success, -1 on failure
2145 * This optional handler function can be registered if the driver
2146 * interface implementation needs to commit changes (e.g., by setting
2147 * network interface up) at the end of initial configuration. If set,
2148 * this handler will be called after initial setup has been completed.
2150 int (*commit)(void *priv);
2153 * send_ether - Send an ethernet packet (AP only)
2154 * @priv: private driver interface data
2155 * @dst: Destination MAC address
2156 * @src: Source MAC address
2158 * @data: EAPOL packet starting with IEEE 802.1X header
2159 * @data_len: Length of the EAPOL packet in octets
2160 * Returns: 0 on success, -1 on failure
2162 int (*send_ether)(void *priv, const u8 *dst, const u8 *src, u16 proto,
2163 const u8 *data, size_t data_len);
2166 * set_radius_acl_auth - Notification of RADIUS ACL change
2167 * @priv: Private driver interface data
2168 * @mac: MAC address of the station
2169 * @accepted: Whether the station was accepted
2170 * @session_timeout: Session timeout for the station
2171 * Returns: 0 on success, -1 on failure
2173 int (*set_radius_acl_auth)(void *priv, const u8 *mac, int accepted,
2174 u32 session_timeout);
2177 * set_radius_acl_expire - Notification of RADIUS ACL expiration
2178 * @priv: Private driver interface data
2179 * @mac: MAC address of the station
2180 * Returns: 0 on success, -1 on failure
2182 int (*set_radius_acl_expire)(void *priv, const u8 *mac);
2185 * set_ap_wps_ie - Add WPS IE(s) into Beacon/Probe Response frames (AP)
2186 * @priv: Private driver interface data
2187 * @beacon: WPS IE(s) for Beacon frames or %NULL to remove extra IE(s)
2188 * @proberesp: WPS IE(s) for Probe Response frames or %NULL to remove
2190 * @assocresp: WPS IE(s) for (Re)Association Response frames or %NULL
2191 * to remove extra IE(s)
2192 * Returns: 0 on success, -1 on failure
2194 * This is an optional function to add WPS IE in the kernel driver for
2195 * Beacon and Probe Response frames. This can be left undefined (set
2196 * to %NULL) if the driver uses the Beacon template from set_ap()
2197 * and does not process Probe Request frames. If the driver takes care
2198 * of (Re)Association frame processing, the assocresp buffer includes
2199 * WPS IE(s) that need to be added to (Re)Association Response frames
2200 * whenever a (Re)Association Request frame indicated use of WPS.
2202 * This will also be used to add P2P IE(s) into Beacon/Probe Response
2203 * frames when operating as a GO. The driver is responsible for adding
2204 * timing related attributes (e.g., NoA) in addition to the IEs
2205 * included here by appending them after these buffers. This call is
2206 * also used to provide Probe Response IEs for P2P Listen state
2207 * operations for drivers that generate the Probe Response frames
2210 * DEPRECATED - use set_ap() instead
2212 int (*set_ap_wps_ie)(void *priv, const struct wpabuf *beacon,
2213 const struct wpabuf *proberesp,
2214 const struct wpabuf *assocresp);
2217 * set_supp_port - Set IEEE 802.1X Supplicant Port status
2218 * @priv: Private driver interface data
2219 * @authorized: Whether the port is authorized
2220 * Returns: 0 on success, -1 on failure
2222 int (*set_supp_port)(void *priv, int authorized);
2225 * set_wds_sta - Bind a station into a 4-address WDS (AP only)
2226 * @priv: Private driver interface data
2227 * @addr: MAC address of the associated station
2228 * @aid: Association ID
2229 * @val: 1 = bind to 4-address WDS; 0 = unbind
2230 * @bridge_ifname: Bridge interface to use for the WDS station or %NULL
2231 * to indicate that bridge is not to be used
2232 * @ifname_wds: Buffer to return the interface name for the new WDS
2233 * station or %NULL to indicate name is not returned.
2234 * Returns: 0 on success, -1 on failure
2236 int (*set_wds_sta)(void *priv, const u8 *addr, int aid, int val,
2237 const char *bridge_ifname, char *ifname_wds);
2240 * send_action - Transmit an Action frame
2241 * @priv: Private driver interface data
2242 * @freq: Frequency (in MHz) of the channel
2243 * @wait: Time to wait off-channel for a response (in ms), or zero
2244 * @dst: Destination MAC address (Address 1)
2245 * @src: Source MAC address (Address 2)
2246 * @bssid: BSSID (Address 3)
2248 * @data_len: data length in octets
2249 @ @no_cck: Whether CCK rates must not be used to transmit this frame
2250 * Returns: 0 on success, -1 on failure
2252 * This command can be used to request the driver to transmit an action
2253 * frame to the specified destination.
2255 * If the %WPA_DRIVER_FLAGS_OFFCHANNEL_TX flag is set, the frame will
2256 * be transmitted on the given channel and the device will wait for a
2257 * response on that channel for the given wait time.
2259 * If the flag is not set, the wait time will be ignored. In this case,
2260 * if a remain-on-channel duration is in progress, the frame must be
2261 * transmitted on that channel; alternatively the frame may be sent on
2262 * the current operational channel (if in associated state in station
2263 * mode or while operating as an AP.)
2265 int (*send_action)(void *priv, unsigned int freq, unsigned int wait,
2266 const u8 *dst, const u8 *src, const u8 *bssid,
2267 const u8 *data, size_t data_len, int no_cck);
2270 * send_action_cancel_wait - Cancel action frame TX wait
2271 * @priv: Private driver interface data
2273 * This command cancels the wait time associated with sending an action
2274 * frame. It is only available when %WPA_DRIVER_FLAGS_OFFCHANNEL_TX is
2275 * set in the driver flags.
2277 void (*send_action_cancel_wait)(void *priv);
2280 * remain_on_channel - Remain awake on a channel
2281 * @priv: Private driver interface data
2282 * @freq: Frequency (in MHz) of the channel
2283 * @duration: Duration in milliseconds
2284 * Returns: 0 on success, -1 on failure
2286 * This command is used to request the driver to remain awake on the
2287 * specified channel for the specified duration and report received
2288 * Action frames with EVENT_RX_MGMT events. Optionally, received
2289 * Probe Request frames may also be requested to be reported by calling
2290 * probe_req_report(). These will be reported with EVENT_RX_PROBE_REQ.
2292 * The driver may not be at the requested channel when this function
2293 * returns, i.e., the return code is only indicating whether the
2294 * request was accepted. The caller will need to wait until the
2295 * EVENT_REMAIN_ON_CHANNEL event indicates that the driver has
2296 * completed the channel change. This may take some time due to other
2297 * need for the radio and the caller should be prepared to timing out
2298 * its wait since there are no guarantees on when this request can be
2301 int (*remain_on_channel)(void *priv, unsigned int freq,
2302 unsigned int duration);
2305 * cancel_remain_on_channel - Cancel remain-on-channel operation
2306 * @priv: Private driver interface data
2308 * This command can be used to cancel a remain-on-channel operation
2309 * before its originally requested duration has passed. This could be
2310 * used, e.g., when remain_on_channel() is used to request extra time
2311 * to receive a response to an Action frame and the response is
2312 * received when there is still unneeded time remaining on the
2313 * remain-on-channel operation.
2315 int (*cancel_remain_on_channel)(void *priv);
2318 * probe_req_report - Request Probe Request frames to be indicated
2319 * @priv: Private driver interface data
2320 * @report: Whether to report received Probe Request frames
2321 * Returns: 0 on success, -1 on failure (or if not supported)
2323 * This command can be used to request the driver to indicate when
2324 * Probe Request frames are received with EVENT_RX_PROBE_REQ events.
2325 * Since this operation may require extra resources, e.g., due to less
2326 * optimal hardware/firmware RX filtering, many drivers may disable
2327 * Probe Request reporting at least in station mode. This command is
2328 * used to notify the driver when the Probe Request frames need to be
2329 * reported, e.g., during remain-on-channel operations.
2331 int (*probe_req_report)(void *priv, int report);
2334 * deinit_ap - Deinitialize AP mode
2335 * @priv: Private driver interface data
2336 * Returns: 0 on success, -1 on failure (or if not supported)
2338 * This optional function can be used to disable AP mode related
2339 * configuration. If the interface was not dynamically added,
2340 * change the driver mode to station mode to allow normal station
2341 * operations like scanning to be completed.
2343 int (*deinit_ap)(void *priv);
2346 * deinit_p2p_cli - Deinitialize P2P client mode
2347 * @priv: Private driver interface data
2348 * Returns: 0 on success, -1 on failure (or if not supported)
2350 * This optional function can be used to disable P2P client mode. If the
2351 * interface was not dynamically added, change the interface type back
2354 int (*deinit_p2p_cli)(void *priv);
2357 * suspend - Notification on system suspend/hibernate event
2358 * @priv: Private driver interface data
2360 void (*suspend)(void *priv);
2363 * resume - Notification on system resume/thaw event
2364 * @priv: Private driver interface data
2366 void (*resume)(void *priv);
2369 * signal_monitor - Set signal monitoring parameters
2370 * @priv: Private driver interface data
2371 * @threshold: Threshold value for signal change events; 0 = disabled
2372 * @hysteresis: Minimum change in signal strength before indicating a
2374 * Returns: 0 on success, -1 on failure (or if not supported)
2376 * This function can be used to configure monitoring of signal strength
2377 * with the current AP. Whenever signal strength drops below the
2378 * %threshold value or increases above it, EVENT_SIGNAL_CHANGE event
2379 * should be generated assuming the signal strength has changed at
2380 * least %hysteresis from the previously indicated signal change event.
2382 int (*signal_monitor)(void *priv, int threshold, int hysteresis);
2385 * send_frame - Send IEEE 802.11 frame (testing use only)
2386 * @priv: Private driver interface data
2387 * @data: IEEE 802.11 frame with IEEE 802.11 header
2388 * @data_len: Size of the frame
2389 * @encrypt: Whether to encrypt the frame (if keys are set)
2390 * Returns: 0 on success, -1 on failure
2392 * This function is only used for debugging purposes and is not
2393 * required to be implemented for normal operations.
2395 int (*send_frame)(void *priv, const u8 *data, size_t data_len,
2399 * shared_freq - Get operating frequency of shared interface(s)
2400 * @priv: Private driver interface data
2401 * Returns: Operating frequency in MHz, 0 if no shared operation in
2402 * use, or -1 on failure
2404 * This command can be used to request the current operating frequency
2405 * of any virtual interface that shares the same radio to provide
2406 * information for channel selection for other virtual interfaces.
2408 int (*shared_freq)(void *priv);
2411 * get_noa - Get current Notice of Absence attribute payload
2412 * @priv: Private driver interface data
2413 * @buf: Buffer for returning NoA
2414 * @buf_len: Buffer length in octets
2415 * Returns: Number of octets used in buf, 0 to indicate no NoA is being
2416 * advertized, or -1 on failure
2418 * This function is used to fetch the current Notice of Absence
2419 * attribute value from GO.
2421 int (*get_noa)(void *priv, u8 *buf, size_t buf_len);
2424 * set_noa - Set Notice of Absence parameters for GO (testing)
2425 * @priv: Private driver interface data
2427 * @start: Start time in ms from next TBTT
2428 * @duration: Duration in ms
2429 * Returns: 0 on success or -1 on failure
2431 * This function is used to set Notice of Absence parameters for GO. It
2432 * is used only for testing. To disable NoA, all parameters are set to
2435 int (*set_noa)(void *priv, u8 count, int start, int duration);
2438 * set_p2p_powersave - Set P2P power save options
2439 * @priv: Private driver interface data
2440 * @legacy_ps: 0 = disable, 1 = enable, 2 = maximum PS, -1 = no change
2441 * @opp_ps: 0 = disable, 1 = enable, -1 = no change
2442 * @ctwindow: 0.. = change (msec), -1 = no change
2443 * Returns: 0 on success or -1 on failure
2445 int (*set_p2p_powersave)(void *priv, int legacy_ps, int opp_ps,
2449 * ampdu - Enable/disable aggregation
2450 * @priv: Private driver interface data
2451 * @ampdu: 1/0 = enable/disable A-MPDU aggregation
2452 * Returns: 0 on success or -1 on failure
2454 int (*ampdu)(void *priv, int ampdu);
2457 * get_radio_name - Get physical radio name for the device
2458 * @priv: Private driver interface data
2459 * Returns: Radio name or %NULL if not known
2461 * The returned data must not be modified by the caller. It is assumed
2462 * that any interface that has the same radio name as another is
2463 * sharing the same physical radio. This information can be used to
2464 * share scan results etc. information between the virtual interfaces
2465 * to speed up various operations.
2467 const char * (*get_radio_name)(void *priv);
2470 * send_tdls_mgmt - for sending TDLS management packets
2471 * @priv: private driver interface data
2472 * @dst: Destination (peer) MAC address
2473 * @action_code: TDLS action code for the mssage
2474 * @dialog_token: Dialog Token to use in the message (if needed)
2475 * @status_code: Status Code or Reason Code to use (if needed)
2476 * @peer_capab: TDLS peer capability (TDLS_PEER_* bitfield)
2477 * @buf: TDLS IEs to add to the message
2478 * @len: Length of buf in octets
2479 * Returns: 0 on success, negative (<0) on failure
2481 * This optional function can be used to send packet to driver which is
2482 * responsible for receiving and sending all TDLS packets.
2484 int (*send_tdls_mgmt)(void *priv, const u8 *dst, u8 action_code,
2485 u8 dialog_token, u16 status_code, u32 peer_capab,
2486 const u8 *buf, size_t len);
2489 * tdls_oper - Ask the driver to perform high-level TDLS operations
2490 * @priv: Private driver interface data
2491 * @oper: TDLS high-level operation. See %enum tdls_oper
2492 * @peer: Destination (peer) MAC address
2493 * Returns: 0 on success, negative (<0) on failure
2495 * This optional function can be used to send high-level TDLS commands
2498 int (*tdls_oper)(void *priv, enum tdls_oper oper, const u8 *peer);
2501 * wnm_oper - Notify driver of the WNM frame reception
2502 * @priv: Private driver interface data
2503 * @oper: WNM operation. See %enum wnm_oper
2504 * @peer: Destination (peer) MAC address
2505 * @buf: Buffer for the driver to fill in (for getting IE)
2506 * @buf_len: Return the len of buf
2507 * Returns: 0 on success, negative (<0) on failure
2509 int (*wnm_oper)(void *priv, enum wnm_oper oper, const u8 *peer,
2510 u8 *buf, u16 *buf_len);
2513 * set_qos_map - Set QoS Map
2514 * @priv: Private driver interface data
2515 * @qos_map_set: QoS Map
2516 * @qos_map_set_len: Length of QoS Map
2518 int (*set_qos_map)(void *priv, const u8 *qos_map_set,
2519 u8 qos_map_set_len);
2522 * signal_poll - Get current connection information
2523 * @priv: Private driver interface data
2524 * @signal_info: Connection info structure
2526 int (*signal_poll)(void *priv, struct wpa_signal_info *signal_info);
2529 * set_authmode - Set authentication algorithm(s) for static WEP
2530 * @priv: Private driver interface data
2531 * @authmode: 1=Open System, 2=Shared Key, 3=both
2532 * Returns: 0 on success, -1 on failure
2534 * This function can be used to set authentication algorithms for AP
2535 * mode when static WEP is used. If the driver uses user space MLME/SME
2536 * implementation, there is no need to implement this function.
2538 * DEPRECATED - use set_ap() instead
2540 int (*set_authmode)(void *priv, int authmode);
2544 * driver_cmd - Execute driver-specific command
2545 * @priv: Private driver interface data
2546 * @cmd: Command to execute
2547 * @buf: Return buffer
2548 * @buf_len: Buffer length
2549 * Returns: 0 on success, -1 on failure
2551 int (*driver_cmd)(void *priv, char *cmd, char *buf, size_t buf_len);
2552 #endif /* ANDROID */
2555 * vendor_cmd - Execute vendor specific command
2556 * @priv: Private driver interface data
2557 * @vendor_id: Vendor id
2558 * @subcmd: Vendor command id
2559 * @data: Vendor command parameters (%NULL if no parameters)
2560 * @data_len: Data length
2561 * @buf: Return buffer (%NULL to ignore reply)
2562 * Returns: 0 on success, negative (<0) on failure
2564 * This function handles vendor specific commands that are passed to
2565 * the driver/device. The command is identified by vendor id and
2566 * command id. Parameters can be passed as argument to the command
2567 * in the data buffer. Reply (if any) will be filled in the supplied
2570 * The exact driver behavior is driver interface and vendor specific. As
2571 * an example, this will be converted to a vendor specific cfg80211
2572 * command in case of the nl80211 driver interface.
2574 int (*vendor_cmd)(void *priv, unsigned int vendor_id,
2575 unsigned int subcmd, const u8 *data, size_t data_len,
2576 struct wpabuf *buf);
2579 * set_rekey_info - Set rekey information
2580 * @priv: Private driver interface data
2583 * @replay_ctr: Current EAPOL-Key Replay Counter
2585 * This optional function can be used to provide information for the
2586 * driver/firmware to process EAPOL-Key frames in Group Key Handshake
2587 * while the host (including wpa_supplicant) is sleeping.
2589 void (*set_rekey_info)(void *priv, const u8 *kek, const u8 *kck,
2590 const u8 *replay_ctr);
2593 * sta_assoc - Station association indication
2594 * @priv: Private driver interface data
2595 * @own_addr: Source address and BSSID for association frame
2596 * @addr: MAC address of the station to associate
2597 * @reassoc: flag to indicate re-association
2598 * @status: association response status code
2599 * @ie: assoc response ie buffer
2600 * @len: ie buffer length
2601 * Returns: 0 on success, -1 on failure
2603 * This function indicates the driver to send (Re)Association
2604 * Response frame to the station.
2606 int (*sta_assoc)(void *priv, const u8 *own_addr, const u8 *addr,
2607 int reassoc, u16 status, const u8 *ie, size_t len);
2610 * sta_auth - Station authentication indication
2611 * @priv: Private driver interface data
2612 * @own_addr: Source address and BSSID for authentication frame
2613 * @addr: MAC address of the station to associate
2614 * @seq: authentication sequence number
2615 * @status: authentication response status code
2616 * @ie: authentication frame ie buffer
2617 * @len: ie buffer length
2619 * This function indicates the driver to send Authentication frame
2622 int (*sta_auth)(void *priv, const u8 *own_addr, const u8 *addr,
2623 u16 seq, u16 status, const u8 *ie, size_t len);
2626 * add_tspec - Add traffic stream
2627 * @priv: Private driver interface data
2628 * @addr: MAC address of the station to associate
2629 * @tspec_ie: tspec ie buffer
2630 * @tspec_ielen: tspec ie length
2631 * Returns: 0 on success, -1 on failure
2633 * This function adds the traffic steam for the station
2634 * and fills the medium_time in tspec_ie.
2636 int (*add_tspec)(void *priv, const u8 *addr, u8 *tspec_ie,
2637 size_t tspec_ielen);
2640 * add_sta_node - Add a station node in the driver
2641 * @priv: Private driver interface data
2642 * @addr: MAC address of the station to add
2643 * @auth_alg: authentication algorithm used by the station
2644 * Returns: 0 on success, -1 on failure
2646 * This function adds the station node in the driver, when
2647 * the station gets added by FT-over-DS.
2649 int (*add_sta_node)(void *priv, const u8 *addr, u16 auth_alg);
2652 * sched_scan - Request the driver to initiate scheduled scan
2653 * @priv: Private driver interface data
2654 * @params: Scan parameters
2655 * @interval: Interval between scan cycles in milliseconds
2656 * Returns: 0 on success, -1 on failure
2658 * This operation should be used for scheduled scan offload to
2659 * the hardware. Every time scan results are available, the
2660 * driver should report scan results event for wpa_supplicant
2661 * which will eventually request the results with
2662 * wpa_driver_get_scan_results2(). This operation is optional
2663 * and if not provided or if it returns -1, we fall back to
2664 * normal host-scheduled scans.
2666 int (*sched_scan)(void *priv, struct wpa_driver_scan_params *params,
2670 * stop_sched_scan - Request the driver to stop a scheduled scan
2671 * @priv: Private driver interface data
2672 * Returns: 0 on success, -1 on failure
2674 * This should cause the scheduled scan to be stopped and
2675 * results should stop being sent. Must be supported if
2676 * sched_scan is supported.
2678 int (*stop_sched_scan)(void *priv);
2681 * poll_client - Probe (null data or such) the given station
2682 * @priv: Private driver interface data
2683 * @own_addr: MAC address of sending interface
2684 * @addr: MAC address of the station to probe
2685 * @qos: Indicates whether station is QoS station
2687 * This function is used to verify whether an associated station is
2688 * still present. This function does not need to be implemented if the
2689 * driver provides such inactivity polling mechanism.
2691 void (*poll_client)(void *priv, const u8 *own_addr,
2692 const u8 *addr, int qos);
2695 * radio_disable - Disable/enable radio
2696 * @priv: Private driver interface data
2697 * @disabled: 1=disable 0=enable radio
2698 * Returns: 0 on success, -1 on failure
2700 * This optional command is for testing purposes. It can be used to
2701 * disable the radio on a testbed device to simulate out-of-radio-range
2704 int (*radio_disable)(void *priv, int disabled);
2707 * switch_channel - Announce channel switch and migrate the GO to the
2709 * @priv: Private driver interface data
2710 * @settings: Settings for CSA period and new channel
2711 * Returns: 0 on success, -1 on failure
2713 * This function is used to move the GO to the legacy STA channel to
2714 * avoid frequency conflict in single channel concurrency.
2716 int (*switch_channel)(void *priv, struct csa_settings *settings);
2719 * start_dfs_cac - Listen for radar interference on the channel
2720 * @priv: Private driver interface data
2721 * @freq: Channel parameters
2722 * Returns: 0 on success, -1 on failure
2724 int (*start_dfs_cac)(void *priv, struct hostapd_freq_params *freq);
2727 * stop_ap - Removes beacon from AP
2728 * @priv: Private driver interface data
2729 * Returns: 0 on success, -1 on failure (or if not supported)
2731 * This optional function can be used to disable AP mode related
2732 * configuration. Unlike deinit_ap, it does not change to station
2735 int (*stop_ap)(void *priv);
2738 * get_survey - Retrieve survey data
2739 * @priv: Private driver interface data
2740 * @freq: If set, survey data for the specified frequency is only
2741 * being requested. If not set, all survey data is requested.
2742 * Returns: 0 on success, -1 on failure
2744 * Use this to retrieve:
2746 * - the observed channel noise floor
2747 * - the amount of time we have spent on the channel
2748 * - the amount of time during which we have spent on the channel that
2749 * the radio has determined the medium is busy and we cannot
2751 * - the amount of time we have spent receiving data
2752 * - the amount of time we have spent transmitting data
2754 * This data can be used for spectrum heuristics. One example is
2755 * Automatic Channel Selection (ACS). The channel survey data is
2756 * kept on a linked list on the channel data, one entry is added
2757 * for each survey. The min_nf of the channel is updated for each
2760 int (*get_survey)(void *priv, unsigned int freq);
2763 * status - Get driver interface status information
2764 * @priv: Private driver interface data
2765 * @buf: Buffer for printing tou the status information
2766 * @buflen: Maximum length of the buffer
2767 * Returns: Length of written status information or -1 on failure
2769 int (*status)(void *priv, char *buf, size_t buflen);
2774 * enum wpa_event_type - Event type for wpa_supplicant_event() calls
2776 enum wpa_event_type {
2778 * EVENT_ASSOC - Association completed
2780 * This event needs to be delivered when the driver completes IEEE
2781 * 802.11 association or reassociation successfully.
2782 * wpa_driver_ops::get_bssid() is expected to provide the current BSSID
2783 * after this event has been generated. In addition, optional
2784 * EVENT_ASSOCINFO may be generated just before EVENT_ASSOC to provide
2785 * more information about the association. If the driver interface gets
2786 * both of these events at the same time, it can also include the
2787 * assoc_info data in EVENT_ASSOC call.
2792 * EVENT_DISASSOC - Association lost
2794 * This event should be called when association is lost either due to
2795 * receiving deauthenticate or disassociate frame from the AP or when
2796 * sending either of these frames to the current AP. If the driver
2797 * supports separate deauthentication event, EVENT_DISASSOC should only
2798 * be used for disassociation and EVENT_DEAUTH for deauthentication.
2799 * In AP mode, union wpa_event_data::disassoc_info is required.
2804 * EVENT_MICHAEL_MIC_FAILURE - Michael MIC (TKIP) detected
2806 * This event must be delivered when a Michael MIC error is detected by
2807 * the local driver. Additional data for event processing is
2808 * provided with union wpa_event_data::michael_mic_failure. This
2809 * information is used to request new encyption key and to initiate
2810 * TKIP countermeasures if needed.
2812 EVENT_MICHAEL_MIC_FAILURE,
2815 * EVENT_SCAN_RESULTS - Scan results available
2817 * This event must be called whenever scan results are available to be
2818 * fetched with struct wpa_driver_ops::get_scan_results(). This event
2819 * is expected to be used some time after struct wpa_driver_ops::scan()
2820 * is called. If the driver provides an unsolicited event when the scan
2821 * has been completed, this event can be used to trigger
2822 * EVENT_SCAN_RESULTS call. If such event is not available from the
2823 * driver, the driver wrapper code is expected to use a registered
2824 * timeout to generate EVENT_SCAN_RESULTS call after the time that the
2825 * scan is expected to be completed. Optional information about
2826 * completed scan can be provided with union wpa_event_data::scan_info.
2831 * EVENT_ASSOCINFO - Report optional extra information for association
2833 * This event can be used to report extra association information for
2834 * EVENT_ASSOC processing. This extra information includes IEs from
2835 * association frames and Beacon/Probe Response frames in union
2836 * wpa_event_data::assoc_info. EVENT_ASSOCINFO must be send just before
2837 * EVENT_ASSOC. Alternatively, the driver interface can include
2838 * assoc_info data in the EVENT_ASSOC call if it has all the
2839 * information available at the same point.
2844 * EVENT_INTERFACE_STATUS - Report interface status changes
2846 * This optional event can be used to report changes in interface
2847 * status (interface added/removed) using union
2848 * wpa_event_data::interface_status. This can be used to trigger
2849 * wpa_supplicant to stop and re-start processing for the interface,
2850 * e.g., when a cardbus card is ejected/inserted.
2852 EVENT_INTERFACE_STATUS,
2855 * EVENT_PMKID_CANDIDATE - Report a candidate AP for pre-authentication
2857 * This event can be used to inform wpa_supplicant about candidates for
2858 * RSN (WPA2) pre-authentication. If wpa_supplicant is not responsible
2859 * for scan request (ap_scan=2 mode), this event is required for
2860 * pre-authentication. If wpa_supplicant is performing scan request
2861 * (ap_scan=1), this event is optional since scan results can be used
2862 * to add pre-authentication candidates. union
2863 * wpa_event_data::pmkid_candidate is used to report the BSSID of the
2864 * candidate and priority of the candidate, e.g., based on the signal
2865 * strength, in order to try to pre-authenticate first with candidates
2866 * that are most likely targets for re-association.
2868 * EVENT_PMKID_CANDIDATE can be called whenever the driver has updates
2869 * on the candidate list. In addition, it can be called for the current
2870 * AP and APs that have existing PMKSA cache entries. wpa_supplicant
2871 * will automatically skip pre-authentication in cases where a valid
2872 * PMKSA exists. When more than one candidate exists, this event should
2873 * be generated once for each candidate.
2875 * Driver will be notified about successful pre-authentication with
2876 * struct wpa_driver_ops::add_pmkid() calls.
2878 EVENT_PMKID_CANDIDATE,
2881 * EVENT_STKSTART - Request STK handshake (MLME-STKSTART.request)
2883 * This event can be used to inform wpa_supplicant about desire to set
2884 * up secure direct link connection between two stations as defined in
2885 * IEEE 802.11e with a new PeerKey mechanism that replaced the original
2886 * STAKey negotiation. The caller will need to set peer address for the
2892 * EVENT_TDLS - Request TDLS operation
2894 * This event can be used to request a TDLS operation to be performed.
2899 * EVENT_FT_RESPONSE - Report FT (IEEE 802.11r) response IEs
2901 * The driver is expected to report the received FT IEs from
2902 * FT authentication sequence from the AP. The FT IEs are included in
2903 * the extra information in union wpa_event_data::ft_ies.
2908 * EVENT_IBSS_RSN_START - Request RSN authentication in IBSS
2910 * The driver can use this event to inform wpa_supplicant about a STA
2911 * in an IBSS with which protected frames could be exchanged. This
2912 * event starts RSN authentication with the other STA to authenticate
2913 * the STA and set up encryption keys with it.
2915 EVENT_IBSS_RSN_START,
2918 * EVENT_AUTH - Authentication result
2920 * This event should be called when authentication attempt has been
2921 * completed. This is only used if the driver supports separate
2922 * authentication step (struct wpa_driver_ops::authenticate).
2923 * Information about authentication result is included in
2924 * union wpa_event_data::auth.
2929 * EVENT_DEAUTH - Authentication lost
2931 * This event should be called when authentication is lost either due
2932 * to receiving deauthenticate frame from the AP or when sending that
2933 * frame to the current AP.
2934 * In AP mode, union wpa_event_data::deauth_info is required.
2939 * EVENT_ASSOC_REJECT - Association rejected
2941 * This event should be called when (re)association attempt has been
2942 * rejected by the AP. Information about the association response is
2943 * included in union wpa_event_data::assoc_reject.
2948 * EVENT_AUTH_TIMED_OUT - Authentication timed out
2950 EVENT_AUTH_TIMED_OUT,
2953 * EVENT_ASSOC_TIMED_OUT - Association timed out
2955 EVENT_ASSOC_TIMED_OUT,
2958 * EVENT_FT_RRB_RX - FT (IEEE 802.11r) RRB frame received
2963 * EVENT_WPS_BUTTON_PUSHED - Report hardware push button press for WPS
2965 EVENT_WPS_BUTTON_PUSHED,
2968 * EVENT_TX_STATUS - Report TX status
2973 * EVENT_RX_FROM_UNKNOWN - Report RX from unknown STA
2975 EVENT_RX_FROM_UNKNOWN,
2978 * EVENT_RX_MGMT - Report RX of a management frame
2983 * EVENT_REMAIN_ON_CHANNEL - Remain-on-channel duration started
2985 * This event is used to indicate when the driver has started the
2986 * requested remain-on-channel duration. Information about the
2987 * operation is included in union wpa_event_data::remain_on_channel.
2989 EVENT_REMAIN_ON_CHANNEL,
2992 * EVENT_CANCEL_REMAIN_ON_CHANNEL - Remain-on-channel timed out
2994 * This event is used to indicate when the driver has completed
2995 * remain-on-channel duration, i.e., may noot be available on the
2996 * requested channel anymore. Information about the
2997 * operation is included in union wpa_event_data::remain_on_channel.
2999 EVENT_CANCEL_REMAIN_ON_CHANNEL,
3002 * EVENT_MLME_RX - Report reception of frame for MLME (test use only)
3004 * This event is used only by driver_test.c and userspace MLME.
3009 * EVENT_RX_PROBE_REQ - Indicate received Probe Request frame
3011 * This event is used to indicate when a Probe Request frame has been
3012 * received. Information about the received frame is included in
3013 * union wpa_event_data::rx_probe_req. The driver is required to report
3014 * these events only after successfully completed probe_req_report()
3015 * commands to request the events (i.e., report parameter is non-zero)
3016 * in station mode. In AP mode, Probe Request frames should always be
3022 * EVENT_NEW_STA - New wired device noticed
3024 * This event is used to indicate that a new device has been detected
3025 * in a network that does not use association-like functionality (i.e.,
3026 * mainly wired Ethernet). This can be used to start EAPOL
3027 * authenticator when receiving a frame from a device. The address of
3028 * the device is included in union wpa_event_data::new_sta.
3033 * EVENT_EAPOL_RX - Report received EAPOL frame
3035 * When in AP mode with hostapd, this event is required to be used to
3036 * deliver the receive EAPOL frames from the driver. With
3037 * %wpa_supplicant, this event is used only if the send_eapol() handler
3038 * is used to override the use of l2_packet for EAPOL frame TX.
3043 * EVENT_SIGNAL_CHANGE - Indicate change in signal strength
3045 * This event is used to indicate changes in the signal strength
3046 * observed in frames received from the current AP if signal strength
3047 * monitoring has been enabled with signal_monitor().
3049 EVENT_SIGNAL_CHANGE,
3052 * EVENT_INTERFACE_ENABLED - Notify that interface was enabled
3054 * This event is used to indicate that the interface was enabled after
3055 * having been previously disabled, e.g., due to rfkill.
3057 EVENT_INTERFACE_ENABLED,
3060 * EVENT_INTERFACE_DISABLED - Notify that interface was disabled
3062 * This event is used to indicate that the interface was disabled,
3063 * e.g., due to rfkill.
3065 EVENT_INTERFACE_DISABLED,
3068 * EVENT_CHANNEL_LIST_CHANGED - Channel list changed
3070 * This event is used to indicate that the channel list has changed,
3071 * e.g., because of a regulatory domain change triggered by scan
3072 * results including an AP advertising a country code.
3074 EVENT_CHANNEL_LIST_CHANGED,
3077 * EVENT_INTERFACE_UNAVAILABLE - Notify that interface is unavailable
3079 * This event is used to indicate that the driver cannot maintain this
3080 * interface in its operation mode anymore. The most likely use for
3081 * this is to indicate that AP mode operation is not available due to
3082 * operating channel would need to be changed to a DFS channel when
3083 * the driver does not support radar detection and another virtual
3084 * interfaces caused the operating channel to change. Other similar
3085 * resource conflicts could also trigger this for station mode
3088 EVENT_INTERFACE_UNAVAILABLE,
3091 * EVENT_BEST_CHANNEL
3093 * Driver generates this event whenever it detects a better channel
3094 * (e.g., based on RSSI or channel use). This information can be used
3095 * to improve channel selection for a new AP/P2P group.
3100 * EVENT_UNPROT_DEAUTH - Unprotected Deauthentication frame received
3102 * This event should be called when a Deauthentication frame is dropped
3103 * due to it not being protected (MFP/IEEE 802.11w).
3104 * union wpa_event_data::unprot_deauth is required to provide more
3105 * details of the frame.
3107 EVENT_UNPROT_DEAUTH,
3110 * EVENT_UNPROT_DISASSOC - Unprotected Disassociation frame received
3112 * This event should be called when a Disassociation frame is dropped
3113 * due to it not being protected (MFP/IEEE 802.11w).
3114 * union wpa_event_data::unprot_disassoc is required to provide more
3115 * details of the frame.
3117 EVENT_UNPROT_DISASSOC,
3120 * EVENT_STATION_LOW_ACK
3122 * Driver generates this event whenever it detected that a particular
3123 * station was lost. Detection can be through massive transmission
3124 * failures for example.
3126 EVENT_STATION_LOW_ACK,
3129 * EVENT_IBSS_PEER_LOST - IBSS peer not reachable anymore
3131 EVENT_IBSS_PEER_LOST,
3134 * EVENT_DRIVER_GTK_REKEY - Device/driver did GTK rekey
3136 * This event carries the new replay counter to notify wpa_supplicant
3137 * of the current EAPOL-Key Replay Counter in case the driver/firmware
3138 * completed Group Key Handshake while the host (including
3139 * wpa_supplicant was sleeping).
3141 EVENT_DRIVER_GTK_REKEY,
3144 * EVENT_SCHED_SCAN_STOPPED - Scheduled scan was stopped
3146 EVENT_SCHED_SCAN_STOPPED,
3149 * EVENT_DRIVER_CLIENT_POLL_OK - Station responded to poll
3151 * This event indicates that the station responded to the poll
3152 * initiated with @poll_client.
3154 EVENT_DRIVER_CLIENT_POLL_OK,
3157 * EVENT_EAPOL_TX_STATUS - notify of EAPOL TX status
3159 EVENT_EAPOL_TX_STATUS,
3162 * EVENT_CH_SWITCH - AP or GO decided to switch channels
3164 * Described in wpa_event_data.ch_switch
3169 * EVENT_WNM - Request WNM operation
3171 * This event can be used to request a WNM operation to be performed.
3176 * EVENT_CONNECT_FAILED_REASON - Connection failure reason in AP mode
3178 * This event indicates that the driver reported a connection failure
3179 * with the specified client (for example, max client reached, etc.) in
3182 EVENT_CONNECT_FAILED_REASON,
3185 * EVENT_RADAR_DETECTED - Notify of radar detection
3187 * A radar has been detected on the supplied frequency, hostapd should
3188 * react accordingly (e.g., change channel).
3190 EVENT_DFS_RADAR_DETECTED,
3193 * EVENT_CAC_FINISHED - Notify that channel availability check has been completed
3195 * After a successful CAC, the channel can be marked clear and used.
3197 EVENT_DFS_CAC_FINISHED,
3200 * EVENT_CAC_ABORTED - Notify that channel availability check has been aborted
3202 * The CAC was not successful, and the channel remains in the previous
3203 * state. This may happen due to a radar beeing detected or other
3204 * external influences.
3206 EVENT_DFS_CAC_ABORTED,
3209 * EVENT_DFS_CAC_NOP_FINISHED - Notify that non-occupancy period is over
3211 * The channel which was previously unavailable is now available again.
3213 EVENT_DFS_NOP_FINISHED,
3216 * EVENT_SURVEY - Received survey data
3218 * This event gets triggered when a driver query is issued for survey
3219 * data and the requested data becomes available. The returned data is
3220 * stored in struct survey_results. The results provide at most one
3221 * survey entry for each frequency and at minimum will provide one
3222 * survey entry for one frequency. The survey data can be os_malloc()'d
3223 * and then os_free()'d, so the event callback must only copy data.
3228 * EVENT_SCAN_STARTED - Scan started
3230 * This indicates that driver has started a scan operation either based
3231 * on a request from wpa_supplicant/hostapd or from another application.
3232 * EVENT_SCAN_RESULTS is used to indicate when the scan has been
3233 * completed (either successfully or by getting cancelled).
3238 * EVENT_AVOID_FREQUENCIES - Received avoid frequency range
3240 * This event indicates a set of frequency ranges that should be avoided
3241 * to reduce issues due to interference or internal co-existence
3242 * information in the driver.
3244 EVENT_AVOID_FREQUENCIES
3249 * struct freq_survey - Channel survey info
3251 * @ifidx: Interface index in which this survey was observed
3252 * @freq: Center of frequency of the surveyed channel
3253 * @nf: Channel noise floor in dBm
3254 * @channel_time: Amount of time in ms the radio spent on the channel
3255 * @channel_time_busy: Amount of time in ms the radio detected some signal
3256 * that indicated to the radio the channel was not clear
3257 * @channel_time_rx: Amount of time the radio spent receiving data
3258 * @channel_time_tx: Amount of time the radio spent transmitting data
3259 * @filled: bitmask indicating which fields have been reported, see
3260 * SURVEY_HAS_* defines.
3261 * @list: Internal list pointers
3263 struct freq_survey {
3268 u64 channel_time_busy;
3269 u64 channel_time_rx;
3270 u64 channel_time_tx;
3271 unsigned int filled;
3272 struct dl_list list;
3275 #define SURVEY_HAS_NF BIT(0)
3276 #define SURVEY_HAS_CHAN_TIME BIT(1)
3277 #define SURVEY_HAS_CHAN_TIME_BUSY BIT(2)
3278 #define SURVEY_HAS_CHAN_TIME_RX BIT(3)
3279 #define SURVEY_HAS_CHAN_TIME_TX BIT(4)
3283 * union wpa_event_data - Additional data for wpa_supplicant_event() calls
3285 union wpa_event_data {
3287 * struct assoc_info - Data for EVENT_ASSOC and EVENT_ASSOCINFO events
3289 * This structure is optional for EVENT_ASSOC calls and required for
3290 * EVENT_ASSOCINFO calls. By using EVENT_ASSOC with this data, the
3291 * driver interface does not need to generate separate EVENT_ASSOCINFO
3296 * reassoc - Flag to indicate association or reassociation
3301 * req_ies - (Re)Association Request IEs
3303 * If the driver generates WPA/RSN IE, this event data must be
3304 * returned for WPA handshake to have needed information. If
3305 * wpa_supplicant-generated WPA/RSN IE is used, this
3306 * information event is optional.
3308 * This should start with the first IE (fixed fields before IEs
3309 * are not included).
3314 * req_ies_len - Length of req_ies in bytes
3319 * resp_ies - (Re)Association Response IEs
3321 * Optional association data from the driver. This data is not
3322 * required WPA, but may be useful for some protocols and as
3323 * such, should be reported if this is available to the driver
3326 * This should start with the first IE (fixed fields before IEs
3327 * are not included).
3332 * resp_ies_len - Length of resp_ies in bytes
3334 size_t resp_ies_len;
3337 * beacon_ies - Beacon or Probe Response IEs
3339 * Optional Beacon/ProbeResp data: IEs included in Beacon or
3340 * Probe Response frames from the current AP (i.e., the one
3341 * that the client just associated with). This information is
3342 * used to update WPA/RSN IE for the AP. If this field is not
3343 * set, the results from previous scan will be used. If no
3344 * data for the new AP is found, scan results will be requested
3345 * again (without scan request). At this point, the driver is
3346 * expected to provide WPA/RSN IE for the AP (if WPA/WPA2 is
3349 * This should start with the first IE (fixed fields before IEs
3350 * are not included).
3352 const u8 *beacon_ies;
3355 * beacon_ies_len - Length of beacon_ies */
3356 size_t beacon_ies_len;
3359 * freq - Frequency of the operational channel in MHz
3364 * addr - Station address (for AP mode)
3370 * struct disassoc_info - Data for EVENT_DISASSOC events
3372 struct disassoc_info {
3374 * addr - Station address (for AP mode)
3379 * reason_code - Reason Code (host byte order) used in
3380 * Deauthentication frame
3385 * ie - Optional IE(s) in Disassociation frame
3390 * ie_len - Length of ie buffer in octets
3395 * locally_generated - Whether the frame was locally generated
3397 int locally_generated;
3401 * struct deauth_info - Data for EVENT_DEAUTH events
3403 struct deauth_info {
3405 * addr - Station address (for AP mode)
3410 * reason_code - Reason Code (host byte order) used in
3411 * Deauthentication frame
3416 * ie - Optional IE(s) in Deauthentication frame
3421 * ie_len - Length of ie buffer in octets
3426 * locally_generated - Whether the frame was locally generated
3428 int locally_generated;
3432 * struct michael_mic_failure - Data for EVENT_MICHAEL_MIC_FAILURE
3434 struct michael_mic_failure {
3437 } michael_mic_failure;
3440 * struct interface_status - Data for EVENT_INTERFACE_STATUS
3442 struct interface_status {
3445 EVENT_INTERFACE_ADDED, EVENT_INTERFACE_REMOVED
3450 * struct pmkid_candidate - Data for EVENT_PMKID_CANDIDATE
3452 struct pmkid_candidate {
3453 /** BSSID of the PMKID candidate */
3455 /** Smaller the index, higher the priority */
3457 /** Whether RSN IE includes pre-authenticate flag */
3462 * struct stkstart - Data for EVENT_STKSTART
3469 * struct tdls - Data for EVENT_TDLS
3475 TDLS_REQUEST_TEARDOWN
3477 u16 reason_code; /* for teardown */
3481 * struct wnm - Data for EVENT_WNM
3499 * struct ft_ies - FT information elements (EVENT_FT_RESPONSE)
3501 * During FT (IEEE 802.11r) authentication sequence, the driver is
3502 * expected to use this event to report received FT IEs (MDIE, FTIE,
3503 * RSN IE, TIE, possible resource request) to the supplicant. The FT
3504 * IEs for the next message will be delivered through the
3505 * struct wpa_driver_ops::update_ft_ies() callback.
3511 u8 target_ap[ETH_ALEN];
3512 /** Optional IE(s), e.g., WMM TSPEC(s), for RIC-Request */
3514 /** Length of ric_ies buffer in octets */
3519 * struct ibss_rsn_start - Data for EVENT_IBSS_RSN_START
3521 struct ibss_rsn_start {
3526 * struct auth_info - Data for EVENT_AUTH events
3532 u16 auth_transaction;
3539 * struct assoc_reject - Data for EVENT_ASSOC_REJECT events
3541 struct assoc_reject {
3543 * bssid - BSSID of the AP that rejected association
3548 * resp_ies - (Re)Association Response IEs
3550 * Optional association data from the driver. This data is not
3551 * required WPA, but may be useful for some protocols and as
3552 * such, should be reported if this is available to the driver
3555 * This should start with the first IE (fixed fields before IEs
3556 * are not included).
3561 * resp_ies_len - Length of resp_ies in bytes
3563 size_t resp_ies_len;
3566 * status_code - Status Code from (Re)association Response
3571 struct timeout_event {
3576 * struct ft_rrb_rx - Data for EVENT_FT_RRB_RX events
3585 * struct tx_status - Data for EVENT_TX_STATUS events
3597 * struct rx_from_unknown - Data for EVENT_RX_FROM_UNKNOWN events
3599 struct rx_from_unknown {
3606 * struct rx_mgmt - Data for EVENT_RX_MGMT events
3614 * drv_priv - Pointer to store driver private BSS information
3616 * If not set to NULL, this is used for comparison with
3617 * hostapd_data->drv_priv to determine which BSS should process
3623 * freq - Frequency (in MHz) on which the frame was received
3628 * ssi_signal - Signal strength in dBm (or 0 if not available)
3634 * struct remain_on_channel - Data for EVENT_REMAIN_ON_CHANNEL events
3636 * This is also used with EVENT_CANCEL_REMAIN_ON_CHANNEL events.
3638 struct remain_on_channel {
3640 * freq - Channel frequency in MHz
3645 * duration - Duration to remain on the channel in milliseconds
3647 unsigned int duration;
3648 } remain_on_channel;
3651 * struct scan_info - Optional data for EVENT_SCAN_RESULTS events
3652 * @aborted: Whether the scan was aborted
3653 * @freqs: Scanned frequencies in MHz (%NULL = all channels scanned)
3654 * @num_freqs: Number of entries in freqs array
3655 * @ssids: Scanned SSIDs (%NULL or zero-length SSID indicates wildcard
3657 * @num_ssids: Number of entries in ssids array
3663 struct wpa_driver_scan_ssid ssids[WPAS_MAX_SCAN_SSIDS];
3668 * struct mlme_rx - Data for EVENT_MLME_RX events
3679 * struct rx_probe_req - Data for EVENT_RX_PROBE_REQ events
3681 struct rx_probe_req {
3683 * sa - Source address of the received Probe Request frame
3688 * da - Destination address of the received Probe Request frame
3689 * or %NULL if not available
3694 * bssid - BSSID of the received Probe Request frame or %NULL
3700 * ie - IEs from the Probe Request body
3705 * ie_len - Length of ie buffer in octets
3710 * signal - signal strength in dBm (or 0 if not available)
3716 * struct new_sta - Data for EVENT_NEW_STA events
3723 * struct eapol_rx - Data for EVENT_EAPOL_RX events
3732 * signal_change - Data for EVENT_SIGNAL_CHANGE events
3734 struct wpa_signal_info signal_change;
3737 * struct best_channel - Data for EVENT_BEST_CHANNEL events
3738 * @freq_24: Best 2.4 GHz band channel frequency in MHz
3739 * @freq_5: Best 5 GHz band channel frequency in MHz
3740 * @freq_overall: Best channel frequency in MHz
3742 * 0 can be used to indicate no preference in either band.
3744 struct best_channel {
3750 struct unprot_deauth {
3756 struct unprot_disassoc {
3763 * struct low_ack - Data for EVENT_STATION_LOW_ACK events
3764 * @addr: station address
3771 * struct ibss_peer_lost - Data for EVENT_IBSS_PEER_LOST
3773 struct ibss_peer_lost {
3778 * struct driver_gtk_rekey - Data for EVENT_DRIVER_GTK_REKEY
3780 struct driver_gtk_rekey {
3782 const u8 *replay_ctr;
3786 * struct client_poll - Data for EVENT_DRIVER_CLIENT_POLL_OK events
3787 * @addr: station address
3789 struct client_poll {
3794 * struct eapol_tx_status
3795 * @dst: Original destination
3796 * @data: Data starting with IEEE 802.1X header (!)
3797 * @data_len: Length of data
3798 * @ack: Indicates ack or lost frame
3800 * This corresponds to hapd_send_eapol if the frame sent
3801 * there isn't just reported as EVENT_TX_STATUS.
3803 struct eapol_tx_status {
3812 * @freq: Frequency of new channel in MHz
3813 * @ht_enabled: Whether this is an HT channel
3814 * @ch_offset: Secondary channel offset
3815 * @ch_width: Channel width
3816 * @cf1: Center frequency 1
3817 * @cf2: Center frequency 2
3823 enum chan_width ch_width;
3829 * struct connect_failed - Data for EVENT_CONNECT_FAILED_REASON
3830 * @addr: Remote client address
3831 * @code: Reason code for connection failure
3833 struct connect_failed_reason {
3839 } connect_failed_reason;
3842 * struct dfs_event - Data for radar detected events
3843 * @freq: Frequency of the channel in MHz
3849 enum chan_width chan_width;
3855 * survey_results - Survey result data for EVENT_SURVEY
3856 * @freq_filter: Requested frequency survey filter, 0 if request
3857 * was for all survey data
3858 * @survey_list: Linked list of survey data
3860 struct survey_results {
3861 unsigned int freq_filter;
3862 struct dl_list survey_list; /* struct freq_survey */
3866 * channel_list_changed - Data for EVENT_CHANNEL_LIST_CHANGED
3867 * @initiator: Initiator of the regulatory change
3868 * @type: Regulatory change type
3869 * @alpha2: Country code (or "" if not available)
3871 struct channel_list_changed {
3872 enum reg_change_initiator initiator;
3875 } channel_list_changed;
3878 * freq_range - List of frequency ranges
3880 * This is used as the data with EVENT_AVOID_FREQUENCIES.
3882 struct wpa_freq_range_list freq_range;
3886 * wpa_supplicant_event - Report a driver event for wpa_supplicant
3887 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
3888 * with struct wpa_driver_ops::init()
3889 * @event: event type (defined above)
3890 * @data: possible extra data for the event
3892 * Driver wrapper code should call this function whenever an event is received
3895 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3896 union wpa_event_data *data);
3900 * The following inline functions are provided for convenience to simplify
3901 * event indication for some of the common events.
3904 static inline void drv_event_assoc(void *ctx, const u8 *addr, const u8 *ie,
3905 size_t ielen, int reassoc)
3907 union wpa_event_data event;
3908 os_memset(&event, 0, sizeof(event));
3909 event.assoc_info.reassoc = reassoc;
3910 event.assoc_info.req_ies = ie;
3911 event.assoc_info.req_ies_len = ielen;
3912 event.assoc_info.addr = addr;
3913 wpa_supplicant_event(ctx, EVENT_ASSOC, &event);
3916 static inline void drv_event_disassoc(void *ctx, const u8 *addr)
3918 union wpa_event_data event;
3919 os_memset(&event, 0, sizeof(event));
3920 event.disassoc_info.addr = addr;
3921 wpa_supplicant_event(ctx, EVENT_DISASSOC, &event);
3924 static inline void drv_event_eapol_rx(void *ctx, const u8 *src, const u8 *data,
3927 union wpa_event_data event;
3928 os_memset(&event, 0, sizeof(event));
3929 event.eapol_rx.src = src;
3930 event.eapol_rx.data = data;
3931 event.eapol_rx.data_len = data_len;
3932 wpa_supplicant_event(ctx, EVENT_EAPOL_RX, &event);
3935 /* driver_common.c */
3936 void wpa_scan_results_free(struct wpa_scan_results *res);
3938 /* Convert wpa_event_type to a string for logging */
3939 const char * event_to_string(enum wpa_event_type event);
3941 /* NULL terminated array of linked in driver wrappers */
3942 extern struct wpa_driver_ops *wpa_drivers[];
3944 #endif /* DRIVER_H */