regulatory_hint(9)

🌸 regulatory_hint(9) — or, "how to tell the wireless core where you think you are" 🌸

okay bestie, welcome to the regulatory_hint(9) page from the Kernel API Manual 💅 this is part 1 of a whole multi-part saga, so hydrate and let's go 🫶

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✨ NAME ✨

regulatory_hint — a driver's little hint to the wireless core about what it thinks the regulatory domain is 🦋

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✨ SYNOPSIS ✨

int regulatory_hint (struct wiphy *wiphy , const char *alpha2 );

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✨ ARGUMENTS ✨

• wiphy — the wireless device that's doing the hinting 💖 ngl this one is only used for reporting conflicts, that's literally its whole job here.
• alpha2 — the ISO/IEC 3166 alpha2 code that the driver claims its regulatory domain should be in 🌍 if rd is set, this should be NULL. and hear me out: even if you set this to NULL, you still have to set rd->alpha2 to some accepted alpha2. no cap, don't skip that part 🙈

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✨ DESCRIPTION ✨

so the way this works 😌 wireless drivers can call this function to drop a hint to the wireless core about what it believes should be the current regulatory domain. you do that one of two ways, and honestly both are iconic:

• hand over an ISO/IEC 3166 alpha2 country code that it knows its regulatory domain should be in 🌈
• or provide a completely build regulatory domain 👑

and if the driver provides an ISO/IEC 3166 alpha2, then userspace gets queried for a regulatory domain structure for that respective country. yes, userspace gets a say, that's the vibe 💫

⚠️ important, don't sleep on this: the wiphy must have been registered to cfg80211 prior to this call. so for cfg80211 drivers that means you must first use wiphy_register, and for mac80211 drivers you must first use ieee80211_register_hw. order matters bestie, it's giving prerequisites 🔥

drivers should check the return value — it's possible you can get a -ENOMEM 😭 so like, actually look at what it returns, okay?

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✨ RETURN ✨

0 on success. -ENOMEM if the memory vibes are not immaculate 💀

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okay that's part 1 wrapped, don't go anywhere — more parts are coming 💜

🌈 SEE ALSO 🌈

okay bestie, this is the part where the page points you at literally every other page in the neighborhood, and there are so many 🫶 and yes every single one is listed below, no skips, no "etc." shortcuts, we don't do that here 💅

• Kernel file ./include/net/cfg80211.h — the actual header everything on this page lives inside, go read it if you want the source-of-truth vibe

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🫶 start here

• Introduction(9) — if you're brand new to this whole subsystem, start with this one, it's the vibe check 👑
• Device registration(9) — all about getting a device registered and known

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🦋 the caps & bands era

• enum ieee80211_channel_flags(9) — the channel flags enum
• struct ieee80211_channel(9) — the channel struct itself, main character energy
• enum ieee80211_rate_flags(9) — flags for rates
• enum ieee80211_bss_type(9) — BSS type enum
• enum ieee80211_privacy(9) — the privacy enum
• struct ieee80211_rate(9) — a rate, as a struct
• struct ieee80211_he_obss_pd(9) — the HE OBSS PD struct
• struct cfg80211_he_bss_color(9) — BSS color, HE flavored
• struct ieee80211_sta_ht_cap(9) — HT capabilities for a station
• struct ieee80211_sta_vht_cap(9) — VHT capabilities, the next gen upgrade
• struct ieee80211_sta_he_cap(9) — HE caps, we're so back
• struct ieee80211_eht_mcs_nss_supp(9) — EHT MCS/NSS support, the detailed one ✨
• struct ieee80211_sta_eht_cap(9) — EHT capabilities, newest-gen energy
• struct ieee80211_sta_uhr_cap(9) — UHR capabilities, yes there's another one
• struct ieee80211_sband_iftype_data(9) — per-band, per-iftype data, lowkey important
• enum ieee80211_edmg_bw_config(9) — EDMG bandwidth config enum
• struct ieee80211_edmg(9) — the EDMG struct
• struct ieee80211_sta_s1g_cap(9) — S1G caps
• struct ieee80211_supported_band(9) — a supported band, iconic
• _ieee80211_set_sband_iftype_data(9) — the one with the leading underscore 👀
• ieee80211_set_sband_iftype_data(9) — the setter, no underscore
• for_each_sband_iftype_data(9) — the loop macro, ilysm
• ieee80211_get_sband_iftype_data(9) — the getter to match
• ieee80211_get_he_iftype_cap(9) — grab the HE cap for an iftype
• ieee80211_get_he_6ghz_capa(9) — HE 6 GHz capability getter
• ieee80211_get_eht_iftype_cap(9) — EHT version of the same thing
• ieee80211_get_uhr_iftype_cap(9) — and the UHR one, they really did all three 🫠
• wiphy_read_of_freq_limits(9) — reads frequency limits out of of

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💅 actions and configuration

• Actions and configuration(9) — this is the big one, everything about doing stuff lives here
• struct vif_params(9) — virtual interface params
• struct key_params(9) — key params, for your keys
• struct cfg80211_chan_def(9) — the channel definition struct, you'll see it a lot
• struct cfg80211_tid_cfg(9) — TID config struct
• struct cfg80211_tid_config(9) — the full TID config, not to be confused with the one above 😭
• struct cfg80211_fils_aad(9) — FILS AAD struct
• struct cfg80211_set_hw_timestamp(9) — hardware timestamp setting struct

chandef girlies rise 🎀

• cfg80211_get_chandef_type(9) — get the type of a chandef
• cfg80211_chandef_create(9) — make one
• cfg80211_chandef_identical(9) — are two chandefs the same, a classic
• cfg80211_chandef_is_edmg(9) — is it EDMG
• cfg80211_chandef_is_s1g(9) — is it S1G
• cfg80211_chandef_compatible(9) — are they compatible
• nl80211_chan_width_to_mhz(9) — turn a channel width into MHz
• cfg80211_chandef_get_width(9) — get the width
• cfg80211_chandef_valid(9) — is it valid, please check this one fr
• cfg80211_chandef_usable(9) — is it usable
• cfg80211_chandef_dfs_required(9) — does it need DFS
• cfg80211_chandef_dfs_usable(9) — is it DFS-usable
• cfg80211_chandef_dfs_cac_time(9) — the DFS CAC time
• cfg80211_chandef_primary(9) — the primary channel of a chandef
• cfg80211_chandef_npca_valid(9) — NPCA validity check
• cfg80211_chandef_add_npca(9) — add NPCA
• cfg80211_chandef_add_dbe(9) — add DBE
• nl80211_send_chandef(9) — send a chandef out over nl80211
• ieee80211_chandef_max_power(9) — max power for a chandef
• cfg80211_chandef_s1g_pri_width(9) — S1G primary width
• cfg80211_any_usable_channels(9) — are there any usable channels at all

survey + crypto + AP setup 🌸

• enum survey_info_flags(9) — survey info flags enum
• struct survey_info(9) — the survey info struct
• struct cfg80211_crypto_settings(9) — crypto settings, handle with care
• struct cfg80211_mbssid_config(9) — MBSSID config
• struct cfg80211_mbssid_elems(9) — MBSSID elements
• struct cfg80211_rnr_elems(9) — RNR elements
• struct cfg80211_beacon_data(9) — beacon data, the whole point of beacons tbh
• struct cfg80211_acl_data(9) — ACL data
• struct cfg80211_fils_discovery(9) — FILS discovery struct
• struct cfg80211_unsol_bcast_probe_resp(9) — unsolicited broadcast probe response
• struct cfg80211_s1g_short_beacon(9) — S1G short beacon
• struct cfg80211_ap_settings(9) — AP settings, big one
• struct cfg80211_ap_update(9) — AP update
• struct cfg80211_csa_settings(9) — channel switch announcement settings
• struct cfg80211_color_change_settings(9) — color change settings
• struct iface_combination_params(9) — interface combination params

stations, rates, stats ✨

• enum station_parameters_apply_mask(9) — the apply mask enum for station parameters
• struct sta_txpwr(9) — station tx power
• struct link_station_parameters(9) — link station params
• struct link_station_del_parameters(9) — params for deleting a link station
• struct cfg80211_ttlm_params(9) — TTLM params
• struct station_parameters(9) — station params, the classic
• struct station_del_parameters(9) — params for deleting a station
• enum cfg80211_station_type(9) — station type enum
• cfg80211_check_station_change(9) — checks a station change
• enum rate_info_flags(9) — rate info flags
• enum rate_info_bw(9) — rate info bandwidth enum
• struct rate_info(9) — rate info struct
• enum bss_param_flags(9) — BSS parameter flags
• struct sta_bss_parameters(9) — station BSS parameters
• struct cfg80211_txq_stats(9) — txq stats
• struct cfg80211_tid_stats(9) — TID stats
• struct link_station_info(9) — link station info
• struct station_info(9) — station info, huge and iconic
• struct cfg80211_sar_sub_specs(9) — SAR sub-specs
• struct cfg80211_sar_specs(9) — SAR specs
• struct cfg80211_sar_freq_ranges(9) — SAR frequency ranges
• struct cfg80211_sar_capa(9) — SAR capabilities
• cfg80211_get_station(9) — get a station
• enum monitor_flags(9) — monitor flags enum
• enum mpath_info_flags(9) — mpath info flags
• struct mpath_info(9) — mpath info
• enum wiphy_bss_param_flags(9) — wiphy BSS param flags
• struct bss_parameters(9) — BSS parameters
• struct mesh_config(9) — mesh config
• struct mesh_setup(9) — mesh setup
• struct ocb_setup(9) — OCB setup
• struct ieee80211_txq_params(9) — txq params

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🌸 scanning and BSS list handling

• Scanning and BSS list handling(9) — the section that covers the whole scan-and-keep-track-of-BSS situation
• struct cfg80211_ssid(9) — an SSID, as a struct
• struct cfg80211_scan_info(9) — scan info
• struct cfg80211_scan_6ghz_params(9) — 6 GHz scan params
• struct cfg80211_scan_request(9) — a scan request
• struct cfg80211_match_set(9) — match set
• struct cfg80211_sched_scan_plan(9) — scheduled scan plan
• struct cfg80211_bss_select_adjust(9) — BSS select adjust
• struct cfg80211_sched_scan_request(9) — a scheduled scan request
• enum cfg80211_signal_type(9) — signal type enum
• struct cfg80211_inform_bss(9) — the inform-BSS struct
• struct cfg80211_bss_ies(9) — BSS IEs
• struct cfg80211_bss(9) — a BSS, the whole point
• ieee80211_bss_get_elem(9) — grab an element out of a BSS
• ieee80211_bss_get_ie(9) — the IE version of the same
• struct cfg80211_auth_request(9) — auth request
• struct cfg80211_assoc_link(9) — assoc link
• struct cfg80211_ml_reconf_req(9) — ML reconfig request
• enum cfg80211_assoc_req_flags(9) — assoc request flags
• struct cfg80211_assoc_request(9) — assoc request
• struct cfg80211_deauth_request(9) — deauth request, sad times 😭
• struct cfg80211_disassoc_request(9) — disassoc request
• struct cfg80211_ibss_params(9) — IBSS params
• struct cfg80211_bss_selection(9) — BSS selection
• struct cfg80211_connect_params(9) — connect params, you'll be here a while
• enum cfg80211_connect_params_changed(9) — which connect params changed
• enum wiphy_params_flags(9) — wiphy params flags
• struct cfg80211_pmksa(9) — PMKSA struct
• struct cfg80211_pkt_pattern(9) — packet pattern
• struct cfg80211_wowlan_tcp(9) — WoWLAN TCP
• struct cfg80211_wowlan(9) — WoWLAN, wake on wireless, genuinely obsessed
• struct cfg80211_coalesce_rules(9) — coalesce rules
• struct cfg80211_coalesce(9) — coalesce
• struct cfg80211_wowlan_nd_match(9) — WoWLAN net-detect match
• struct cfg80211_wowlan_nd_info(9) — WoWLAN net-detect info
• struct cfg80211_wowlan_wakeup(9) — WoWLAN wakeup
• struct cfg80211_gtk_rekey_data(9) — GTK rekey data
• struct cfg80211_update_ft_ies_params(9) — params for updating FT IEs
• struct cfg80211_mgmt_tx_params(9) — mgmt tx params
• struct cfg80211_dscp_exception(9) — DSCP exception
• struct cfg80211_dscp_range(9) — DSCP range
• struct cfg80211_qos_map(9) — QoS map

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🧚 Neighbor Awareness Networking (NAN)

• Neighbor Awareness Networking (NAN)(9) — the NAN section itself, say hi 👋
• struct cfg80211_nan_band_config(9) — NAN band config
• struct cfg80211_nan_conf(9) — NAN config
• struct cfg80211_nan_channel(9) — NAN channel
• struct cfg80211_nan_local_sched(9) — NAN local schedule
• struct cfg80211_nan_peer_map(9) — NAN peer map
• struct cfg80211_nan_peer_sched(9) — NAN peer schedule
• enum cfg80211_nan_conf_changes(9) — which NAN config bits changed
• struct cfg80211_nan_func_filter(9) — NAN function filter
• struct cfg80211_nan_func(9) — a NAN function

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👑 the wiphy files

• struct cfg80211_pmk_conf(9) — PMK config
• struct cfg80211_external_auth_params(9) — external auth params
• struct cfg80211_ftm_responder_stats(9) — FTM responder stats
• struct cfg80211_pmsr_ftm_result(9) — PMSR FTM result
• struct cfg80211_pmsr_result(9) — PMSR result
• struct cfg80211_pmsr_ftm_request_peer(9) — PMSR FTM request peer
• struct cfg80211_pmsr_request_peer(9) — PMSR request peer
• struct cfg80211_pmsr_request(9) — PMSR request
• struct cfg80211_update_owe_info(9) — update OWE info
• struct mgmt_frame_regs(9) — management frame registrations
• struct cfg80211_ops(9) — the ops struct, the backbone of your driver tbh
• enum wiphy_flags(9) — wiphy flags
• struct ieee80211_iface_limit(9) — interface limits
• struct ieee80211_iface_combination(9) — interface combinations
• enum wiphy_wowlan_support_flags(9) — WoWLAN support flags
• struct wiphy_wowlan_support(9) — WoWLAN support
• struct wiphy_coalesce_support(9) — coalesce support
• enum wiphy_vendor_command_flags(9) — vendor command flags
• enum wiphy_opmode_flag(9) — opmode flag enum
• struct sta_opmode_info(9) — station opmode info
• struct wiphy_vendor_command(9) — a vendor command
• struct wiphy_iftype_ext_capab(9) — iftype extended capabilities
• cfg80211_get_iftype_ext_capa(9) — get those extended capabilities
• struct cfg80211_pmsr_capabilities(9) — PMSR capabilities
• struct wiphy_iftype_akm_suites(9) — iftype AKM suites
• struct wiphy_radio_cfg(9) — wiphy radio config
• struct wiphy_radio_freq_range(9) — wiphy radio freq range
• struct wiphy_radio(9) — a wiphy radio
• enum wiphy_nan_flags(9) — wiphy NAN flags
• struct wiphy_nan_capa(9) — wiphy NAN capabilities
• struct wiphy(9) — the wiphy struct itself, absolute icon 👑
• wiphy_priv(9) — grab the driver-private part of a wiphy
• priv_to_wiphy(9) — go the other way, private back to wiphy
• set_wiphy_dev(9) — set the device on a wiphy
• wiphy_dev(9) — get the device
• wiphy_name(9) — the wiphy's name
• wiphy_new_nm(9) — make a new wiphy with a name
• wiphy_new(9) — make a new wiphy
• wiphy_register(9) — register it
• rcu_dereference_wiphy(9) — RCU deref a wiphy
• wiphy_dereference(9) — the wiphy deref helper
• get_wiphy_regdom(9) — get the wiphy's regulatory domain
• wiphy_unregister(9) — unregister it
• wiphy_free(9) — free it, and don't forget this one 🙈
• wiphy_lock(9) — lock it
• wiphy_unlock(9) — unlock it, please
• wiphy_work_queue(9) — queue wiphy work
• wiphy_work_cancel(9) — cancel wiphy work
• wiphy_work_flush(9) — flush wiphy work
• wiphy_delayed_work_queue(9) — queue delayed wiphy work
• wiphy_delayed_work_cancel(9) — cancel delayed wiphy work
• wiphy_delayed_work_flush(9) — flush delayed wiphy work
• wiphy_delayed_work_pending(9) — is delayed work pending
• wiphy_hrtimer_work_queue(9) — queue hrtimer work
• wiphy_hrtimer_work_cancel(9) — cancel hrtimer work
• wiphy_hrtimer_work_flush(9) — flush hrtimer work
• wiphy_hrtimer_work_pending(9) — is hrtimer work pending
• enum ieee80211_ap_reg_power(9) — AP regulatory power enum
• struct wireless_dev(9) — the wireless dev struct, another icon
• wdev_priv(9) — the private part of a wireless dev
• wdev_chandef(9) — the chandef of a wireless dev

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✨ Utility functions

• Utility functions(9) — the grab-bag section, all the little helpers
• ieee80211_channel_equal(9) — are two channels equal
• ieee80211_channel_to_khz(9) — channel → kHz
• ieee80211_channel_to_freq_khz(9) — channel → frequency in kHz
• ieee80211_channel_to_frequency(9) — channel → frequency, the classic
• ieee80211_freq_khz_to_channel(9) — kHz frequency → channel
• ieee80211_frequency_to_channel(9) — frequency → channel
• ieee80211_get_channel_khz(9) — get a channel from a kHz value
• ieee80211_get_channel(9) — get a channel
• cfg80211_channel_is_psc(9) — is this channel a PSC
• ieee80211_radio_freq_range_valid(9) — is the radio freq range valid
• cfg80211_radio_chandef_valid(9) — is the radio chandef valid
• cfg80211_wdev_channel_allowed(9) — is this channel allowed for this wdev
• ieee80211_get_response_rate(9) — get the response rate
• ieee80211_mandatory_rates(9) — the mandatory rates
• struct ieee80211_radiotap_iterator(9) — the radiotap iterator
• ieee80211_get_hdrlen_from_skb(9) — header length from an skb
• ieee80211_hdrlen(9) — the 802.11 header length
• ieee80211_get_mesh_hdrlen(9) — the mesh header length

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🍓 Data path helpers

• Data path helpers(9) — everything that touches actual packets, buckle up 🍓
• ieee80211_data_to_8023_exthdr(9) — 802.11 → 802.3 with the extended header
• ieee80211_data_to_8023(9) — the plain version
• ieee80211_is_valid_amsdu(9) — is this a valid A-MSDU
• ieee80211_amsdu_to_8023s(9) — A-MSDU → multiple 802.3 frames
• ieee80211_get_8023_tunnel_proto(9) — get the 802.3 tunnel protocol
• ieee80211_strip_8023_mesh_hdr(9) — strip the 802.3 mesh header
• cfg80211_classify8021d(9) — classify into 802.1D
• cfg80211_find_elem_match(9) — find a matching element
• cfg80211_find_ie_match(9) — find a matching IE
• cfg80211_find_elem(9) — find an element
• cfg80211_find_ie(9) — find an IE
• cfg80211_find_ext_elem(9) — find an extended element
• cfg80211_find_ext_ie(9) — find an extended IE
• cfg80211_find_vendor_elem(9) — find a vendor element
• cfg80211_find_vendor_ie(9) — find a vendor IE
• enum cfg80211_rnr_iter_ret(9) — the RNR iterator return enum
• cfg80211_iter_rnr(9) — iterate over RNR
• cfg80211_defragment_element(9) — defragment an element
• cfg80211_send_layer2_update(9) — send a layer 2 update

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🔥 regulatory enforcement infrastructure

• Regulatory enforcement infrastructure(9) — the section on keeping everything legal-ish, very much a whole thing 🔥
• regulatory_set_wiphy_regd(9) — set the wiphy's regulatory domain
• regulatory_set_wiphy_regd_sync(9) — the synchronous version
• wiphy_apply_custom_regulatory(9) — apply a custom regulatory setup
• freq_reg_info(9) — regulatory info for a frequency
• reg_initiator_name(9) — the name of whoever initiated the reg request
• regulatory_pre_cac_allowed(9) — is pre-CAC allowed

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🎀 Internal regulatory db functions

• Internal regulatory db functions(9) — internal, so, yk, be careful 🙈
• reg_query_regdb_wmm(9) — query the regulatory db for WMM info

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💜 more scanning / BSS / management

• cfg80211_scan_done(9) — tell everyone the scan is done
• cfg80211_sched_scan_results(9) — scheduled scan results are in
• cfg80211_sched_scan_stopped(9) — scheduled scan stopped
• cfg80211_sched_scan_stopped_locked(9) — the locked version
• cfg80211_inform_bss_frame_data(9) — inform about a BSS from a frame
• cfg80211_gen_new_bssid(9) — generate a new BSSID
• cfg80211_is_element_inherited(9) — is this element inherited
• cfg80211_merge_profile(9) — merge a profile
• enum cfg80211_bss_frame_type(9) — BSS frame type enum
• cfg80211_get_ies_channel_number(9) — get the channel number out of the IEs
• cfg80211_ssid_eq(9) — compare two SSIDs
• cfg80211_inform_bss_data(9) — inform about a BSS from data
• __cfg80211_get_bss(9) — the underscored get-BSS one 👀
• cfg80211_get_bss(9) — get a BSS, the regular one
• cfg80211_ref_bss(9) — take a reference
• cfg80211_put_bss(9) — drop a reference
• cfg80211_unlink_bss(9) — unlink a BSS
• cfg80211_bss_iter(9) — iterate over BSSes
• cfg80211_rx_mlme_mgmt(9) — receive an MLME management frame
• cfg80211_auth_timeout(9) — auth timed out 😭
• struct cfg80211_rx_assoc_resp_data(9) — data for a received assoc response
• cfg80211_rx_assoc_resp(9) — receive an assoc response
• struct cfg80211_assoc_failure(9) — assoc failure struct
• cfg80211_assoc_failure(9) — report an assoc failure
• cfg80211_tx_mlme_mgmt(9) — send an MLME management frame
• cfg80211_rx_unprot_mlme_mgmt(9) — receive an unprotected MLME management frame
• cfg80211_michael_mic_failure(9) — MIC failure, never a fun notification
• cfg80211_ibss_joined(9) — joined an IBSS
• cfg80211_notify_new_peer_candidate(9) — a new peer candidate showed up 👀

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🌈 RFkill integration

• RFkill integration(9) — the rfkill section
• wiphy_rfkill_set_hw_state_reason(9) — set the hardware rfkill state with a reason
• wiphy_rfkill_start_polling(9) — start polling
• wiphy_rfkill_stop_polling(9) — stop polling

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🌈 Vendor commands

• Vendor commands(9) — the vendor command section
• cfg80211_vendor_cmd_alloc_reply_skb(9) — allocate a reply skb for a vendor cmd
• cfg80211_vendor_cmd_reply(9) — send that reply
• cfg80211_vendor_cmd_get_sender(9) — who sent it
• cfg80211_vendor_event_alloc(9) — allocate a vendor event
• cfg80211_vendor_event_alloc_ucast(9) — allocate a unicast vendor event
• cfg80211_vendor_event(9) — send a vendor event

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⭐ Test mode

• Test mode(9) — test mode section, for testing obviously ⭐
• cfg80211_testmode_alloc_reply_skb(9) — allocate a testmode reply skb
• cfg80211_testmode_reply(9) — send the testmode reply
• cfg80211_testmode_alloc_event_skb(9) — allocate a testmode event skb
• cfg80211_testmode_event(9) — send a testmode event

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🫶 connection / roam / mgmt notifications

• struct cfg80211_fils_resp_params(9) — FILS response params
• struct cfg80211_connect_resp_params(9) — connect response params
• cfg80211_connect_done(9) — connect finished
• cfg80211_connect_bss(9) — connect to a BSS
• cfg80211_connect_result(9) — the connect result
• cfg80211_connect_timeout(9) — connect timed out, we've all been there 😭
• struct cfg80211_roam_info(9) — roam info
• cfg80211_roamed(9) — you roamed
• cfg80211_port_authorized(9) — the port got authorized
• cfg80211_disconnected(9) — disconnected, tragic
• cfg80211_ready_on_channel(9) — ready on channel
• cfg80211_remain_on_channel_expired(9) — remain-on-channel expired
• cfg80211_tx_mgmt_expired(9) — mgmt tx expired
• cfg80211_sinfo_alloc_tid_stats(9) — allocate TID stats in the station info
• cfg80211_link_sinfo_alloc_tid_stats(9) — the per-link version
• cfg80211_sinfo_release_content(9) — release the station info contents, don't forget or leak 🫠
• cfg80211_new_sta(9) — a new station appeared
• cfg80211_del_sta_sinfo(9) — a station left, with info
• cfg80211_del_sta(9) — a station left, plain
• cfg80211_conn_failed(9) — connection failed
• struct cfg80211_rx_info(9) — rx info struct
• cfg80211_rx_mgmt_ext(9) — receive a mgmt frame, extended
• cfg80211_rx_mgmt_khz(9) — receive a mgmt frame, in kHz
• cfg80211_rx_mgmt(9) — receive a mgmt frame
• struct cfg80211_tx_status(9) — tx status struct
• cfg80211_mgmt_tx_status_ext(9) — mgmt tx status, extended
• cfg80211_mgmt_tx_status(9) — mgmt tx status
• cfg80211_control_port_tx_status(9) — control port tx status
• cfg80211_rx_control_port(9) — receive on the control port
• cfg80211_cqm_rssi_notify(9) — RSSI crossed a threshold
• cfg80211_cqm_pktloss_notify(9) — packet loss notification
• cfg80211_cqm_txe_notify(9) — tx error notification
• cfg80211_cqm_beacon_loss_notify(9) — beacon loss notification
• __cfg80211_radar_event(9) — radar event, the underscored one 👀
• cfg80211_sta_opmode_change_notify(9) — station opmode changed
• cfg80211_cac_event(9) — CAC event
• cfg80211_background_cac_abort(9) — background CAC aborted
• cfg80211_gtk_rekey_notify(9) — GTK rekey notification
• cfg80211_pmksa_candidate_notify(9) — PMKSA candidate notification
• cfg80211_rx_spurious_frame(9) — a spurious frame arrived, rude
• cfg80211_rx_unexpected_4addr_frame(9) — unexpected 4-address frame
• cfg80211_probe_status(9) — probe status
• cfg80211_report_obss_beacon_khz(9) — report an OBSS beacon, in kHz
• cfg80211_report_obss_beacon(9) — report an OBSS beacon
• struct cfg80211_beaconing_check_config(9) — beaconing check config, last one on the list bestie 🎀

Okay so this list is long long, bestie — 64 whole entries — so we're breaking it into little clusters so your brain doesn't just log off 💅 every name is exactly as it appears, promise, no cap.

🦋 the beaconing & channel crew

• cfg80211_reg_check_beaconing(9)
• cfg80211_reg_can_beacon(9)
• cfg80211_reg_can_beacon_relax(9)

the "can I even beacon here" trio, iconic honestly 🎀

🌸 channel switches & operating classes

• cfg80211_ch_switch_notify(9)
• cfg80211_ch_switch_started_notify(9)
• ieee80211_operating_class_to_band(9)
• ieee80211_operating_class_to_chandef(9)
• ieee80211_chandef_to_operating_class(9)
• ieee80211_chandef_to_khz(9)

look at all these lil conversions going both ways, it's giving very "i know a guy" energy ✨

🫶 interfaces, devices & features

• cfg80211_tdls_oper_request(9)
• cfg80211_calculate_bitrate(9)
• cfg80211_unregister_wdev(9)
• cfg80211_register_netdevice(9)
• cfg80211_unregister_netdevice(9)
• struct cfg80211_ft_event_params(9)
• cfg80211_ft_event(9)
• wiphy_ext_feature_set(9)
• wiphy_ext_feature_isset(9)
• cfg80211_iftype_allowed(9)
• cfg80211_check_combinations(9)
• cfg80211_iter_combinations(9)
• cfg80211_get_radio_idx_by_chan(9)
• cfg80211_stop_link(9)
• cfg80211_stop_iface(9)
• cfg80211_shutdown_all_interfaces(9)

the register/unregister twins are lowkey main characters here 😭 and yes, cfg80211_shutdown_all_interfaces(9) really said "all of them" 💀

🧚 p2p, IEs & fragmenting

• cfg80211_get_p2p_attr(9)
• ieee80211_ie_split_ric(9)
• ieee80211_ie_split(9)
• ieee80211_fragment_element(9)

splitting and fragmenting, the way that these just carve things up, obsessed 🍓

💜 wakeups, crit protos & supported channels

• cfg80211_report_wowlan_wakeup(9)
• cfg80211_crit_proto_stopped(9)
• ieee80211_get_num_supported_channels(9)

three little besties doing completely different jobs, and honestly? valid 🌈

🎀 NAN gang (they get their own section fr)

• cfg80211_free_nan_func(9)
• struct cfg80211_nan_match_params(9)
• cfg80211_nan_match(9)
• cfg80211_nan_func_terminated(9)
• cfg80211_nan_sched_update_done(9)
• cfg80211_next_nan_dw_notif(9)
• cfg80211_nan_cluster_joined(9)
• cfg80211_nan_ulw_update(9)
• cfg80211_nan_channel_evac(9)

nine nan entries, they're literally a friend group 👑

🔥 auth, pmsr & assoc

• cfg80211_external_auth_request(9)
• cfg80211_pmsr_report(9)
• cfg80211_pmsr_complete(9)
• cfg80211_assoc_comeback(9)
• cfg80211_update_owe_info_event(9)

the assoc comeback is such a vibe name honestly, whoever named it ate 💅

💖 BSS, colour & 6GHz

• cfg80211_bss_flush(9)
• cfg80211_bss_color_notify(9)
• cfg80211_obss_color_collision_notify(9)
• cfg80211_color_change_started_notify(9)
• cfg80211_color_change_aborted_notify(9)
• cfg80211_color_change_notify(9)
• cfg80211_6ghz_power_type(9)

a whole colour-change saga with a start, an abort and a notify — it's giving trilogy 🎬

🌟 MLO & channel checks

• cfg80211_links_removed(9)
• struct cfg80211_mlo_reconf_done_data(9)
• cfg80211_mlo_reconf_add_done(9)
• cfg80211_schedule_channels_check(9)
• cfg80211_epcs_changed(9)

reconfig add done is such a "finally finished, anyway" moment 😌

⭐ debugfs & S1G & incumbent signals

• wiphy_locked_debugfs_read(9)
• wiphy_locked_debugfs_write(9)
• cfg80211_s1g_get_start_freq_khz(9)
• cfg80211_s1g_get_end_freq_khz(9)
• cfg80211_s1g_get_primary_sibling(9)
• cfg80211_incumbent_signal_notify(9)

start freq, end freq, primary sibling — the S1G trio said "we come as a set" 🫶

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aaaand that's the whole list, all 64 of them, nobody left behind 💖 go read them, they're literally right there, iykyk. if you got all the way down here you're a real one fr fr 😭🫶

sign-off time 🧚✨ this little masterpiece lives in ./include/net, dated October 2026, and it's all about regulatory_hint(9) — go forth and look up every single one of those cross-refs, bestie, you've got this 💅👑