UTILITY FUNCTIONS(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 Utility functions(9) 🦋

so this one lives in the Kernel API Manual, section 9 — yes bestie, the kernel API section, we're in the big leagues now 💅

✨ NAME ✨

Utility functions — literally what it says on the tin 🎀

💖 DESCRIPTION 💖

okay so cfg80211 offers a number of utility functions that can be useful 🫶

that's it. that's the whole vibe. a number of them. lowkey iconic of the docs to be this mysterious about how many, but we move 😭

ngl, "useful" is doing a lot of heavy lifting here, but that's the statement on the record: cfg80211 → utility functions → they can be useful. slay ✨

and that's just the opening act — there's more coming, so don't go anywhere 🌸

🌸 SEE ALSO 🌸

okay bestie, you survived part 1, so now we're doing the extended universe 💅 this whole section is basically "if you liked that, here's everything else", and yes, it is genuinely this long. no cap. the whole cfg80211 cinematic universe is linked here and we are NOT skipping a single one, because every single one is somebody's main character.

first up, the mothership itself:

  • Kernel file ./include/net/cfg80211.h — literally the header all of this lives in. the source of truth. the blueprint. the icon ✨

then the warm-up crew, in the exact order the page gives them:

the sband girlies ATE, honestly 🫶 and we're just getting started:

look at all those chandefs. it's giving channel-definition supremacy 💀 but okay, next chunk:

  • enum survey_info_flags(9), struct survey_info(9), struct cfg80211_crypto_settings(9), struct cfg80211_mbssid_config(9), struct cfg80211_mbssid_elems(9), struct cfg80211_rnr_elems(9), struct cfg80211_beacon_data(9), struct cfg80211_acl_data(9), struct cfg80211_fils_discovery(9)
  • struct cfg80211_unsol_bcast_probe_resp(9), struct cfg80211_s1g_short_beacon(9), struct cfg80211_ap_settings(9), struct cfg80211_ap_update(9), struct cfg80211_csa_settings(9), struct cfg80211_color_change_settings(9), struct iface_combination_params(9), enum station_parameters_apply_mask(9)
  • struct sta_txpwr(9), struct link_station_parameters(9), struct link_station_del_parameters(9), struct cfg80211_ttlm_params(9), struct station_parameters(9), struct station_del_parameters(9), enum cfg80211_station_type(9), cfg80211_check_station_change(9), enum rate_info_flags(9), enum rate_info_bw(9), struct rate_info(9)
  • enum bss_param_flags(9), struct sta_bss_parameters(9), struct cfg80211_txq_stats(9), struct cfg80211_tid_stats(9), struct link_station_info(9), struct station_info(9), struct cfg80211_sar_sub_specs(9), struct cfg80211_sar_specs(9)
  • struct cfg80211_sar_freq_ranges(9), struct cfg80211_sar_capa(9), cfg80211_get_station(9), enum monitor_flags(9), enum mpath_info_flags(9), struct mpath_info(9), enum wiphy_bss_param_flags(9), struct bss_parameters(9), struct mesh_config(9), struct mesh_setup(9), struct ocb_setup(9), struct ieee80211_txq_params(9)

this is the station-and-mesh arc and it's lowkey iconic 🦋 now the scanning era begins:

  • Scanning and BSS list handling(9), struct cfg80211_ssid(9), struct cfg80211_scan_info(9), struct cfg80211_scan_6ghz_params(9), struct cfg80211_scan_request(9), struct cfg80211_match_set(9), struct cfg80211_sched_scan_plan(9), struct cfg80211_bss_select_adjust(9)
  • struct cfg80211_sched_scan_request(9), enum cfg80211_signal_type(9), struct cfg80211_inform_bss(9), struct cfg80211_bss_ies(9), struct cfg80211_bss(9), ieee80211_bss_get_elem(9), ieee80211_bss_get_ie(9), struct cfg80211_auth_request(9)
  • struct cfg80211_assoc_link(9), struct cfg80211_ml_reconf_req(9), enum cfg80211_assoc_req_flags(9), struct cfg80211_assoc_request(9), struct cfg80211_deauth_request(9), struct cfg80211_disassoc_request(9), struct cfg80211_ibss_params(9), struct cfg80211_bss_selection(9), struct cfg80211_connect_params(9), enum cfg80211_connect_params_changed(9)
  • enum wiphy_params_flags(9), struct cfg80211_pmksa(9), struct cfg80211_pkt_pattern(9), struct cfg80211_wowlan_tcp(9), struct cfg80211_wowlan(9), struct cfg80211_coalesce_rules(9), struct cfg80211_coalesce(9), struct cfg80211_wowlan_nd_match(9)
  • struct cfg80211_wowlan_nd_info(9), struct cfg80211_wowlan_wakeup(9), struct cfg80211_gtk_rekey_data(9), struct cfg80211_update_ft_ies_params(9), struct cfg80211_mgmt_tx_params(9), struct cfg80211_dscp_exception(9), struct cfg80211_dscp_range(9), struct cfg80211_qos_map(9)

wowlan bestie you have my whole heart 💖 and now the NAN section, which we respect deeply:

  • Neighbor Awareness Networking (NAN)(9), struct cfg80211_nan_band_config(9), struct cfg80211_nan_conf(9), struct cfg80211_nan_channel(9), struct cfg80211_nan_local_sched(9), struct cfg80211_nan_peer_map(9), struct cfg80211_nan_peer_sched(9), enum cfg80211_nan_conf_changes(9)
  • struct cfg80211_nan_func_filter(9), struct cfg80211_nan_func(9), struct cfg80211_pmk_conf(9), struct cfg80211_external_auth_params(9), struct cfg80211_ftm_responder_stats(9), struct cfg80211_pmsr_ftm_result(9), struct cfg80211_pmsr_result(9)
  • struct cfg80211_pmsr_ftm_request_peer(9), struct cfg80211_pmsr_request_peer(9), struct cfg80211_pmsr_request(9), struct cfg80211_update_owe_info(9), struct mgmt_frame_regs(9), struct cfg80211_ops(9)
  • enum wiphy_flags(9), struct ieee80211_iface_limit(9), struct ieee80211_iface_combination(9), enum wiphy_wowlan_support_flags(9), struct wiphy_wowlan_support(9), struct wiphy_coalesce_support(9), enum wiphy_vendor_command_flags(9), enum wiphy_opmode_flag(9), struct sta_opmode_info(9)
  • struct wiphy_vendor_command(9), struct wiphy_iftype_ext_capab(9), cfg80211_get_iftype_ext_capa(9), struct cfg80211_pmsr_capabilities(9), struct wiphy_iftype_akm_suites(9), struct wiphy_radio_cfg(9), struct wiphy_radio_freq_range(9), struct wiphy_radio(9), enum wiphy_nan_flags(9), struct wiphy_nan_capa(9)

the wiphy era is here and it's giving main character energy 👑 lock in:

header lengths and channel math, obsessed 🔥 then the data path besties:

regulatory content, we respect the rules (literally, that's the whole point) 🌈 onward:

vendor commands and test mode said "we're also here" 💀 and the connect arc is coming in hot:

and that's every single reference on this page, in order, not one dropped 🙈 the list literally keeps going into part 3, so don't go anywhere 👀💜

okay bestie, final stretch 🫶 this is the cross-reference wall — every single one of these has its own man page, so if any name below makes you go "wait, what does that do??" you already know where to go. no cap, just vibes and a lot of cfg80211_ ✨

bestie the NAN entries are coming and they did NOT come to play 😭

and the grand finale, debugfs girlies + S1G + one lone incumbent 🌸:

that's the whole list, every last one, no skips 💅 lowkey iconic that a SEE ALSO section is this long and honestly? it ate.

okay that's genuinely the whole page — we're done, go touch grass 🦋 and remember: this page lives in ./include/net, it's dated October 2026, and its proper title-card name is Utility functions(9). mwah 💖 ✨ 🎀

📦 where this page comes from