STRUCT CFG80211_NAN_FUNC(9)

📦 version 7.3.1, in nixpkgs unstable

💅 struct cfg80211_nan_func(9) — Kernel API Manual, bestie edition 🦋

okay so this is a page from the Kernel API Manual — it's literally the struct cfg80211_nan_func(9) entry, and no cap, it's giving "backstage pass to how a NAN function is built" ✨ (also heads up: this is part 1 of 3, so don't go anywhere 🫶)

🌸 NAME 🌸

struct cfg80211_nan_func — the lowkey blueprint for a NAN function, like, the whole struct, the whole vibe 💖

✨ SYNOPSIS ✨

here's the actual shape of it, copying it exactly so there's zero confusion, periodt:

struct cfg80211_nan_func {
    enum nl80211_nan_function_type type;
    u8 service_id[NL80211_NAN_FUNC_SERVICE_ID_LEN];
    u8 publish_type;
    bool close_range;
    bool publish_bcast;
    bool subscribe_active;
    u8 followup_id;
    u8 followup_reqid;
    struct mac_address followup_dest;
    u32 ttl;
    const u8 *serv_spec_info;
    u8 serv_spec_info_len;
    bool srf_include;
    const u8 *srf_bf;
    u8 srf_bf_len;
    u8 srf_bf_idx;
    struct mac_address *srf_macs;
    int srf_num_macs;
    struct cfg80211_nan_func_filter *rx_filters;
    struct cfg80211_nan_func_filter *tx_filters;
    u8 num_tx_filters;
    u8 num_rx_filters;
    u8 instance_id;
    u64 cookie;
};

like, that's the whole thing. every field accounted for 👑

🎀 Members 🎀

okay this is the part where we go field by field, and honestly? every single one eats 🔥

  • type — the type, an enum nl80211_nan_function_type. yes it just says that. it's the enum. she's the enum. 💅
  • service_id — the service ID of the function 🌸
  • publish_type — nl80211_nan_publish_type. that's it, that's the description bestie 💀
  • close_range — if true, the range should be limited. and (iconic caveat) the threshold is implementation specific — so like, don't come for me asking for a number, there isn't one here 🙈
  • publish_bcast — if true, the solicited publish should be broadcasted 📡
  • subscribe_active — if true, the subscribe is active ⭐
  • followup_id — the instance ID for follow up 👀
  • followup_reqid — the requester instance ID for follow up 🫶
  • followup_dest — MAC address of the recipient of the follow up 💌
  • ttl — time to live counter in DW. (yes, DW. exactly that. not fixing it, not guessing, we respect the spec 🧚)
  • serv_spec_info — Service Specific Info 📝
  • serv_spec_info_len — Service Specific Info length 📏
  • srf_include — if true, SRF is inclusive ✅
  • srf_bf — Bloom Filter 🌼
  • srf_bf_len — Bloom Filter length 📐
  • srf_bf_idx — Bloom Filter index 🔢
  • srf_macs — SRF MAC addresses 💻
  • srf_num_macs — number of MAC addresses in SRF 🔢
  • rx_filters — rx filters that are matched with corresponding peer's tx_filter 💞
  • tx_filters — filters that should be transmitted in the SDF 📤
  • num_tx_filters — length of tx_filters. 📊
  • num_rx_filters — length of rx_filters. 📊
  • instance_id — driver allocated id of the function. 🚗
  • cookie — unique NAN function identifier. 🍪 (literally the cutest field name, obsessed)

aaaand that's part 1, bestie — more coming, don't touch that dial 💖🦋

🔗 SEE ALSO 💅

okay bestie, this is the part where the manpage introduces you to its entire extended friend group. literally everyone is here. no cap. scroll responsibly 🫶

  • Kernel file ./include/net/cfg80211.h — the actual file in the kernel tree, the mothership, the source of truth, the main character 💖
  • Introduction(9), Device registration(9) — start here, for real

🎀 Actions and configuration 🎀

(the manpage literally has a whole subsection called Actions and configuration(9), and it is giving organizational queen energy 👑)

🦋 Scanning and BSS list handling 🦋

  • 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)

🌸 Neighbor Awareness Networking (NAN) 🌸

🧚 Utility functions 🧚

🔥 Data path helpers 🔥

🌈 Regulatory enforcement infrastructure 🌈

💜 RFkill integration 💜

🍓 Vendor commands 🍓

⭐ Test mode ⭐

and that's the whole group chat, bestie 💀 every single one of them, no cap — go click through whichever one you actually need 🫶✨

🛰️ the reg / beacon girlies (yes they're still in SEE ALSO)

  • cfg80211_reg_check_beaconing(9) — checking whether the beaconing is even allowed, the whole page
  • cfg80211_reg_can_beacon(9) — can we beacon? the page that answers that
  • cfg80211_reg_can_beacon_relax(9) — same question but relaxed, iconic

📡 channel switch era

  • cfg80211_ch_switch_notify(9) — the channel-switch notification page
  • cfg80211_ch_switch_started_notify(9) — the one for when the switch has started 👑

🌈 operating class / chandef conversions, we love a glow-up

  • ieee80211_operating_class_to_band(9) — operating class ➡️ band
  • ieee80211_operating_class_to_chandef(9) — operating class ➡️ chandef
  • ieee80211_chandef_to_operating_class(9) — chandef ➡️ operating class
  • ieee80211_chandef_to_khz(9) — chandef ➡️ kHz, the math girlie

🎀 the misc cfg80211 ops (no skips, we list them all)

  • cfg80211_tdls_oper_request(9) — TDLS oper request page
  • cfg80211_calculate_bitrate(9) — bitrate math, slay
  • cfg80211_unregister_wdev(9) — unregistering a wireless device
  • cfg80211_register_netdevice(9) — registering a netdevice
  • cfg80211_unregister_netdevice(9) — the reverse, sadly
  • struct cfg80211_ft_event_params(9) — the page for this struct, behold
  • cfg80211_ft_event(9) — the FT event page
  • cfg80211_get_p2p_attr(9) — P2P attribute fetching, periodt

🧚 IE splitting & fragmenting

  • ieee80211_ie_split_ric(9) — IE split, RIC edition
  • ieee80211_ie_split(9) — plain IE split, still eating
  • ieee80211_fragment_element(9) — fragmenting an element, break it down

💜 wowlan / crit proto / channel counting

  • cfg80211_report_wowlan_wakeup(9) — reporting that wowlan wakeup
  • cfg80211_crit_proto_stopped(9) — crit proto stopped, noted
  • ieee80211_get_num_supported_channels(9) — counting supported channels fr fr

💅 combinations & radios

  • cfg80211_check_combinations(9) — checking combinations
  • cfg80211_iter_combinations(9) — iterating combinations
  • cfg80211_get_radio_idx_by_chan(9) — radio index by channel, iykyk

🛑 stopping & shutting down

  • cfg80211_stop_link(9) — stopping a link
  • cfg80211_stop_iface(9) — stopping an iface
  • cfg80211_shutdown_all_interfaces(9) — shutting down all the interfaces, dramatic but necessary

⭐ wiphy extended features

  • wiphy_ext_feature_set(9) — set that ext feature
  • wiphy_ext_feature_isset(9) — is it set tho

🦋 NAN besties (our homegirls)

  • cfg80211_free_nan_func(9) — freeing the NAN func
  • struct cfg80211_nan_match_params(9) — the match params struct page
  • cfg80211_nan_match(9) — NAN match, a moment
  • cfg80211_nan_func_terminated(9) — the NAN func got terminated 😭
  • cfg80211_nan_sched_update_done(9) — sched update done, we love closure

🔥 auth / pmsr / assoc / owe

  • cfg80211_external_auth_request(9) — external auth request page
  • cfg80211_pmsr_report(9) — PMSR report
  • cfg80211_pmsr_complete(9) — PMSR complete, we're done here
  • cfg80211_iftype_allowed(9) — is this iftype allowed
  • cfg80211_assoc_comeback(9) — assoc comeback, the sequel
  • cfg80211_update_owe_info_event(9) — updating the OWE info event

🌸 BSS color & color change (so aesthetic)

  • cfg80211_bss_flush(9) — BSS flush
  • cfg80211_bss_color_notify(9) — BSS color notify
  • cfg80211_obss_color_collision_notify(9) — OBSS color collision notify, ouch
  • cfg80211_color_change_started_notify(9) — color change started
  • cfg80211_color_change_aborted_notify(9) — color change aborted 💀
  • cfg80211_color_change_notify(9) — color change, plain and simple

👑 6 GHz / MLO / channel checks

  • cfg80211_6ghz_power_type(9) — 6 GHz power type, main character
  • cfg80211_links_removed(9) — links removed 😔
  • struct cfg80211_mlo_reconf_done_data(9) — the MLO reconf done data struct
  • cfg80211_mlo_reconf_add_done(9) — MLO reconf add done
  • cfg80211_schedule_channels_check(9) — scheduling that channels check
  • cfg80211_epcs_changed(9) — EPCS changed, noted bestie

🍓 more NAN (yes there's more, we stay fed)

  • cfg80211_next_nan_dw_notif(9) — next NAN DW notif
  • cfg80211_nan_cluster_joined(9) — the cluster got joined 🫶
  • cfg80211_nan_ulw_update(9) — NAN ULW update
  • cfg80211_nan_channel_evac(9) — NAN channel evac, everybody out

🔒 debugfs lock girlies

  • wiphy_locked_debugfs_read(9) — locked debugfs read
  • wiphy_locked_debugfs_write(9) — locked debugfs write

🌈 S1G frequency stuff

  • cfg80211_s1g_get_start_freq_khz(9) — S1G start freq in kHz
  • cfg80211_s1g_get_end_freq_khz(9) — S1G end freq in kHz
  • cfg80211_s1g_get_primary_sibling(9) — S1G primary sibling, find your people

✨ and one (1) incumbent signal

  • cfg80211_incumbent_signal_notify(9) — the incumbent signal notify page, the final girlie
ok that's genuinely every single reference, no crumbs left, we ate and left no notes 💅

✨ that's the whole page bestie ✨ source lives at ./include/net, it's dated October 2026, and the page itself is struct cfg80211_nan_func(9) — go be iconic with it 🎀💖🦋

📦 where this page comes from