regulatory_pre_cac_allowed(9)

📦 version 7.3.1, in nixpkgs unstable

💅 regulatory_pre_cac_allowed — a Kernel API Manual moment (section 9, bestie)

okay so we're deep in the kernel API manual and this one is literally called regulatory_pre_cac_allowed 🦋

✨ NAME ✨

regulatory_pre_cac_allowed — the function that does a vibe check on whether pre-CAC is even allowed in the current regdom 👑

🌸 SYNOPSIS 🌸

bool regulatory_pre_cac_allowed (struct wiphy *wiphy );

that's it. one arg. she's lowkey minimal and we respect it 💅

🎀 ARGUMENTS 🎀

  • wiphy — the wiphy you're checking the pre-CAC capability for. like, this is the wiphy in question, bestie, no cap 🫶

🦋 DESCRIPTION 🦋

so here's the tea: pre-CAC is allowed only in some regdomains — notable example being ETSI ✨. that's it, that's the whole rule. everywhere else? not it. 🙈

iykyk — regdomain dependent behaviour, so don't go assuming it's a yes everywhere 💀

⭐ RETURN ⭐

  • true — allowed, slay 🎉
  • false — not allowed, and that's on the regdom 😭

more of this page is still loading, stay tuned bestie 🧚💜

🌈 SEE ALSO 🌈

okay bestie, this is the part of the page where the kernel just dumps the entire friend group on you 😭 and like — it's a lot. it's giving "tag yourself, i'm wiphy_lock(9)". every single one of these is a real link, no cap, so go click around. the whole fam lives in ./include/net/cfg80211.h:

  • Kernel file ./include/net/cfg80211.h — the mothership 💖 everything below is in here
  • Introduction(9) — start here bestie, this is the doorway ✨
  • Device registration(9) — how your device gets its whole identity, main character energy 🎀
  • enum ieee80211_channel_flags(9) — channel flags, the little stickers on each channel
  • struct ieee80211_channel(9) — the channel herself 👑
  • enum ieee80211_rate_flags(9) — flagging the rates
  • enum ieee80211_bss_type(9) — what kind of BSS we're dealing with
  • enum ieee80211_privacy(9) — privacy!! 🙈
  • struct ieee80211_rate(9) — she's got a rate, she's got a flag
  • struct ieee80211_he_obss_pd(9) — HE OBSS PD, say it three times fast
  • struct cfg80211_he_bss_color(9) — the BSS color, lowkey iconic 🎨
  • struct ieee80211_sta_ht_cap(9) — HT caps, the classic
  • struct ieee80211_sta_vht_cap(9) — VHT caps, the upgrade ✨
  • struct ieee80211_sta_he_cap(9) — HE caps, the glow-up
  • struct ieee80211_eht_mcs_nss_supp(9) — say it with your chest, MCS/NSS support 💅
  • struct ieee80211_sta_eht_cap(9) — EHT caps, she's new here
  • struct ieee80211_sta_uhr_cap(9) — UHR caps, literally beyond
  • struct ieee80211_sband_iftype_data(9) — sband + iftype, the duo 🤝
  • enum ieee80211_edmg_bw_config(9) — EDMG bandwidth config
  • struct ieee80211_edmg(9) — plain EDMG, no notes
  • struct ieee80211_sta_s1g_cap(9) — S1G caps, niche and proud of it 🦋
  • struct ieee80211_supported_band(9) — the band that's supported, periodt
  • _ieee80211_set_sband_iftype_data(9) — the underscore version, the understudy
  • ieee80211_set_sband_iftype_data(9) — and the actual setter
  • for_each_sband_iftype_data(9) — a loop macro, we love a for_each 🌸
  • ieee80211_get_sband_iftype_data(9) — getter behaviour, get her
  • ieee80211_get_he_iftype_cap(9) — HE cap by iftype
  • ieee80211_get_he_6ghz_capa(9) — HE cap but make it 6GHz ⭐
  • ieee80211_get_eht_iftype_cap(9) — EHT cap by iftype
  • ieee80211_get_uhr_iftype_cap(9) — UHR cap by iftype
  • wiphy_read_of_freq_limits(9) — reading freq limits out of OF, good luck babe 🫶

then the big family arrives — Actions and configuration, the section that ate:

  • Actions and configuration(9) — the whole section page, go there for the deep lore
  • struct vif_params(9) — vif params, tiny but mighty
  • struct key_params(9) — keys!! 🔑
  • struct cfg80211_chan_def(9) — the chan def, she's everywhere, you'll see her name like 15 more times in this list
  • struct cfg80211_tid_cfg(9) — TID config
  • struct cfg80211_tid_config(9) — TID config the struct, different from the one above, do not @ me
  • struct cfg80211_fils_aad(9) — FILS AAD, acronym soup fr fr
  • struct cfg80211_set_hw_timestamp(9) — hw timestamp time ⏰
  • cfg80211_get_chandef_type(9) — get the chandef type
  • cfg80211_chandef_create(9) — create the chandef
  • cfg80211_chandef_identical(9) — are these two chandefs twins? 👯
  • cfg80211_chandef_is_edmg(9) — is it EDMG?
  • cfg80211_chandef_is_s1g(9) — is it S1G?
  • cfg80211_chandef_compatible(9) — are they compatible, are they meant to be 💞
  • nl80211_chan_width_to_mhz(9) — width in MHz, math girlie math
  • cfg80211_chandef_get_width(9) — get the width
  • cfg80211_chandef_valid(9) — vibe check the chandef ✅
  • cfg80211_chandef_usable(9) — is it usable though
  • cfg80211_chandef_dfs_required(9) — do we need DFS 👀
  • cfg80211_chandef_dfs_usable(9) — DFS but usable
  • cfg80211_chandef_dfs_cac_time(9) — the CAC time, important, remember her
  • cfg80211_chandef_primary(9) — the primary channel 🌟
  • cfg80211_chandef_npca_valid(9) — NPCA valid?
  • cfg80211_chandef_add_npca(9) — add NPCA
  • cfg80211_chandef_add_dbe(9) — add DBE
  • nl80211_send_chandef(9) — send the chandef out into the world 🕊️
  • ieee80211_chandef_max_power(9) — max power, she's loud
  • cfg80211_chandef_s1g_pri_width(9) — S1G primary width
  • cfg80211_any_usable_channels(9) — literally any usable channels, please 🙏
  • enum survey_info_flags(9) — survey flags
  • struct survey_info(9) — survey info, she's doing research
  • struct cfg80211_crypto_settings(9) — crypto settings 🔐
  • struct cfg80211_mbssid_config(9) — MBSSID config
  • struct cfg80211_mbssid_elems(9) — MBSSID elems
  • struct cfg80211_rnr_elems(9) — RNR elems
  • struct cfg80211_beacon_data(9) — beacon data 📡
  • struct cfg80211_acl_data(9) — ACL data
  • struct cfg80211_fils_discovery(9) — FILS discovery, cute name honestly
  • struct cfg80211_unsol_bcast_probe_resp(9) — the longest struct name in the group chat 😭
  • struct cfg80211_s1g_short_beacon(9) — short beacon, small but slays
  • struct cfg80211_ap_settings(9) — AP settings, the whole fit 👗
  • struct cfg80211_ap_update(9) — AP update
  • struct cfg80211_csa_settings(9) — CSA settings
  • struct cfg80211_color_change_settings(9) — color change settings 🎨
  • struct iface_combination_params(9) — iface combo params
  • enum station_parameters_apply_mask(9) — apply mask
  • struct sta_txpwr(9) — sta tx power
  • struct link_station_parameters(9) — link station params
  • struct link_station_del_parameters(9) — link station del params, she's leaving ✌️
  • struct cfg80211_ttlm_params(9) — TTLM params
  • struct station_parameters(9) — station params
  • struct station_del_parameters(9) — station del params
  • enum cfg80211_station_type(9) — station type
  • cfg80211_check_station_change(9) — check the station change, do your checks bestie
  • enum rate_info_flags(9) — rate info flags
  • enum rate_info_bw(9) — rate info bandwidth
  • struct rate_info(9) — rate info
  • enum bss_param_flags(9) — BSS param flags
  • struct sta_bss_parameters(9) — sta BSS params
  • 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
  • struct cfg80211_sar_sub_specs(9) — SAR sub specs
  • struct cfg80211_sar_specs(9) — SAR specs
  • struct cfg80211_sar_freq_ranges(9) — SAR freq ranges
  • struct cfg80211_sar_capa(9) — SAR capabilities
  • cfg80211_get_station(9) — get the station
  • enum monitor_flags(9) — monitor flags 👀
  • 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, block done bestie 💅

okay next block, Scanning and BSS list handling — she's long, she's thorough, she's the moment:

  • Scanning and BSS list handling(9) — the section page, hit her up
  • struct cfg80211_ssid(9) — the SSID struct, iconic
  • struct cfg80211_scan_info(9) — scan info
  • struct cfg80211_scan_6ghz_params(9) — 6GHz scan params, fancy ⭐
  • struct cfg80211_scan_request(9) — scan request, she's asking politely
  • 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) — sched scan request
  • enum cfg80211_signal_type(9) — signal type 📶
  • struct cfg80211_inform_bss(9) — inform BSS, gossip era
  • struct cfg80211_bss_ies(9) — BSS IEs
  • struct cfg80211_bss(9) — the BSS herself 👑
  • ieee80211_bss_get_elem(9) — get the elem
  • ieee80211_bss_get_ie(9) — get the IE, the classic
  • struct cfg80211_auth_request(9) — auth request, let me in 🙏
  • struct cfg80211_assoc_link(9) — assoc link
  • struct cfg80211_ml_reconf_req(9) — ML reconf request, ML = multi-link, she's sophisticated
  • enum cfg80211_assoc_req_flags(9) — assoc request flags
  • struct cfg80211_assoc_request(9) — the assoc request
  • struct cfg80211_deauth_request(9) — deauth request, the breakup 💔
  • struct cfg80211_disassoc_request(9) — disassoc request, breakup part 2
  • struct cfg80211_ibss_params(9) — IBSS params
  • struct cfg80211_bss_selection(9) — BSS selection
  • struct cfg80211_connect_params(9) — connect params
  • enum cfg80211_connect_params_changed(9) — which connect params changed 👀
  • enum wiphy_params_flags(9) — wiphy params flags
  • struct cfg80211_pmksa(9) — PMKSA, say it with confidence
  • struct cfg80211_pkt_pattern(9) — packet pattern
  • struct cfg80211_wowlan_tcp(9) — WoWLAN over TCP, unhinged but valid
  • struct cfg80211_wowlan(9) — WoWLAN, the sleepy icon 😴
  • struct cfg80211_coalesce_rules(9) — coalesce rules
  • struct cfg80211_coalesce(9) — coalesce
  • struct cfg80211_wowlan_nd_match(9) — WoWLAN nd match
  • struct cfg80211_wowlan_nd_info(9) — WoWLAN nd info
  • struct cfg80211_wowlan_wakeup(9) — WoWLAN wakeup, rise and grind ☀️
  • struct cfg80211_gtk_rekey_data(9) — GTK rekey data 🔑
  • struct cfg80211_update_ft_ies_params(9) — update FT IEs params
  • struct cfg80211_mgmt_tx_params(9) — mgmt tx params
  • struct cfg80211_dscp_exception(9) — DSCP exception, the exception ✨
  • struct cfg80211_dscp_range(9) — DSCP range
  • struct cfg80211_qos_map(9) — QoS map 🗺️

Neighbor Awareness Networking (NAN) — yes that's the actual name and yes it ate:

  • Neighbor Awareness Networking (NAN)(9) — the section page for the whole NAN situation
  • struct cfg80211_nan_band_config(9) — NAN band config
  • struct cfg80211_nan_conf(9) — NAN conf
  • 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) — what changed in the NAN conf
  • struct cfg80211_nan_func_filter(9) — NAN func filter
  • struct cfg80211_nan_func(9) — the NAN func herself
  • struct cfg80211_pmk_conf(9) — PMK conf
  • 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) — mgmt frame regs
  • struct cfg80211_ops(9) — the ops struct, the blueprint, arguably the main character of this whole header 🫡
  • enum wiphy_flags(9) — wiphy flags
  • struct ieee80211_iface_limit(9) — iface limit
  • struct ieee80211_iface_combination(9) — iface combination
  • 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
  • struct sta_opmode_info(9) — sta opmode info
  • struct wiphy_vendor_command(9) — vendor command
  • struct wiphy_iftype_ext_capab(9) — iftype ext capability
  • cfg80211_get_iftype_ext_capa(9) — get her ✨
  • struct cfg80211_pmsr_capabilities(9) — PMSR capabilities
  • struct wiphy_iftype_akm_suites(9) — iftype AKM suites
  • struct wiphy_radio_cfg(9) — radio cfg 📻
  • struct wiphy_radio_freq_range(9) — radio freq range
  • struct wiphy_radio(9) — the radio herself
  • enum wiphy_nan_flags(9) — wiphy NAN flags
  • struct wiphy_nan_capa(9) — wiphy NAN capabilities
  • struct wiphy(9) — THE wiphy. the whole point. bow down 👑
  • wiphy_priv(9) — wiphy priv
  • priv_to_wiphy(9) — and the way back
  • set_wiphy_dev(9) — set the wiphy dev
  • wiphy_dev(9) — get the wiphy dev
  • wiphy_name(9) — what's her name 💅
  • wiphy_new_nm(9) — new wiphy, named edition
  • wiphy_new(9) — new wiphy, classic edition
  • wiphy_register(9) — register her, it's her debut 🌟
  • rcu_dereference_wiphy(9) — RCU dereference the wiphy, careful bestie
  • wiphy_dereference(9) — wiphy dereference
  • get_wiphy_regdom(9) — get the wiphy regdomain
  • wiphy_unregister(9) — unregister, she's logging off
  • wiphy_free(9) — free her, goodbye 🕊️
  • wiphy_lock(9) — lock her
  • wiphy_unlock(9) — unlock her
  • wiphy_work_queue(9) — queue the work
  • wiphy_work_cancel(9) — cancel the work
  • wiphy_work_flush(9) — flush the work
  • wiphy_delayed_work_queue(9) — queue it but later ⏳
  • wiphy_delayed_work_cancel(9) — cancel it but later
  • wiphy_delayed_work_flush(9) — flush it but later
  • wiphy_delayed_work_pending(9) — is it pending 👀
  • wiphy_hrtimer_work_queue(9) — hrtimer work queue, high-res baby ⚡
  • wiphy_hrtimer_work_cancel(9) — hrtimer work cancel
  • wiphy_hrtimer_work_flush(9) — hrtimer work flush
  • wiphy_hrtimer_work_pending(9) — hrtimer work pending
  • enum ieee80211_ap_reg_power(9) — AP regulatory power
  • struct wireless_dev(9) — the wireless dev, she's the whole interface
  • wdev_priv(9) — wdev priv
  • wdev_chandef(9) — wdev chandef

Utility functions — the little helpers, the group chat's most useful members:

Data path helpers — the ones actually moving your bytes around:

Regulatory enforcement infrastructure — rules are rules bestie:

RFkill integration — turning the radio off and on again:

Vendor commands — the "ask your vendor" zone:

Test mode — for testing, obviously, no cap:

and the last run of the list, the notifications-and-results crew, absolute icons every one:

…and bestie we are not done, there's more list where that came from, keep scrolling 👀

...and the list literally keeps going, bestie, so buckle up 🎀 — every single one of these is its own lil manual page, and they're all right here:

Like, that's the whole friend group right there — go say hi to whichever one you actually needed 💅✨

And that's a wrap on the whole page, bestie 🫶 this one lives in ./include/net, dated October 2026, and it's filed under regulatory_pre_cac_allowed(9). Screenshot it, bookmark it, tattoo it on your forearm, idc — just remember the facts stayed facts, only the vibe got a glow-up. bye bestie, go read your kernel docs 💖🎀🦋

📦 where this page comes from