wiphy_ext_feature_set(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 wiphy_ext_feature_set(9) 🦋

okay so bestie, welcome to the wiphy_ext_feature_set page — yes it's a kernel API manual page, yes we're doing this, and yes you're gonna understand it. it's giving "tiny function, big wireless energy" 💅

✨ NAME ✨

wiphy_ext_feature_set — set the extended feature flag. that's the whole vibe. one job. iconic behavior honestly 🎀

🌸 SYNOPSIS 🌸

void wiphy_ext_feature_set (struct wiphy *wiphy , enum
       nl80211_ext_feature_index ftidx );

literally just two things going in, nothing coming out — it's a void function so it doesn't hand you anything back, it just does the thing to the thing you gave it 🫶

💖 ARGUMENTS 💖

  • wiphy — the wiphy to modify. this is the lil guy you're poking at. you hand it over, the function messes with it, that's the deal ✨
  • ftidx — extended feature bit index. it's an enum nl80211_ext_feature_index, so like… it's not a random number, it's one of the named feature slots, and it tells the function which extended feature bit we're talking about 🔥

👑 DESCRIPTION 👑

so here's the tea — the extended features are flagged in multiple bytes (see struct wiphy.ext_features). multiple. bytes. not just one lil byte, a whole little squad of them 🌈

which is why this function takes a feature index rather than you trying to do bit math yourself — the index is what sorts out which byte and which bit inside struct wiphy.ext_features you're actually touching. iykyk 💅

ngl, the source page keeps this part short and sweet, and it points you straight at struct wiphy.ext_features for the full picture — go look at that struct if you want the whole layout, bestie 👀

and that's part 1 of 3, so don't go anywhere — more incoming 🧚💜

👀 SEE ALSO 👀

Okay bestie, this is the part where the page just. lists everyone. It's giving family reunion group-chat, it's giving "mom made me invite the whole class" 😭 — but for real though, every single one of these is (9), aka a kernel API page, and they're all canon. Slay. Let's get into it 💅

First up, the mothership herself:

  • ./include/net/cfg80211.h — the kernel file, i.e. where all this lore lives 🫶
  • Introduction(9)
  • Device registration(9)

✨ bands, caps & iftypes, oh my ✨

The hardware-ability girlies:

🎀 actions & configuration 🎀

This is the big one, prepare yourself:

🦋 scanning & BSS list handling 🦋

The "who's out there" section:

  • Scanning and BSS list handling(9) — yes the section ref itself
  • 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) — scan request central
  • struct cfg80211_inform_bss(9), struct cfg80211_bss_ies(9), struct cfg80211_bss(9), ieee80211_bss_get_elem(9), ieee80211_bss_get_ie(9) — the BSS object itself, the main character
  • 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) — auth/assoc/deauth/disassoc + connect vibes
  • 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) — WoWLAN + coalesce era
  • 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) — rekey + FT + mgmt tx + QoS, all accounted for

🧚 NAN & friends 🧚

  • Neighbor Awareness Networking (NAN)(9) — the whole NAN section
  • 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) — NAN everything, so many structs babe
  • 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)

💜 the wiphy core 💜

The struct wiphy(9) extended universe, and honestly? iconic.

🌸 utility functions 🌸

🌈 data path helpers 🌈

🔥 regulatory girlies 🔥

🍓 BSS, MLME & notify 🍓

Okay this is a long stretch, stay with me:

💀 RFkill integration 💀

⭐ vendor commands ⭐

🎀 test mode 🎀

🫶 connect, roam & the rest of the notifies 🫶

Deep breath bestie, almost through the list:

And that's the whole guest list 💅 every single name, exactly as written, no substitutions, no cap.

That list keeps going, bestie — it's a whole friend group of functions, so let's meet all of them 💅

  • cfg80211_reg_check_beaconing(9) — the "can u even beacon here" check 👀
  • cfg80211_reg_can_beacon(9) — same vibe, chill edition
  • cfg80211_reg_can_beacon_relax(9) — same vibe, but it loosens up a lil
  • cfg80211_ch_switch_notify(9) — "we switched channels, just so u know" 📣
  • cfg80211_ch_switch_started_notify(9) — the pre switch announcement, main character energy
  • ieee80211_operating_class_to_band(9) — op class in, band out, iconic conversion
  • ieee80211_operating_class_to_chandef(9) — op class in, chandef out ✨
  • ieee80211_chandef_to_operating_class(9) — the reverse glow-up
  • ieee80211_chandef_to_khz(9) — chandef to numbers, in kHz fr
  • cfg80211_tdls_oper_request(9) — TDLS said "hey, can we talk" 🫶
  • cfg80211_calculate_bitrate(9) — the math girlie doing bitrate math
  • cfg80211_unregister_wdev(9) — bye-bye wireless device 👋
  • cfg80211_register_netdevice(9) — netdev, meet the world
  • cfg80211_unregister_netdevice(9) — netdev, exit stage left
  • struct cfg80211_ft_event_params(9) — the struct holding FT event param realness
  • cfg80211_ft_event(9) — fast transition event, she's moving fast
  • cfg80211_get_p2p_attr(9) — grab that P2P attribute
  • ieee80211_ie_split_ric(9) — splitting IEs w/ RIC included, no skips
  • ieee80211_ie_split(9) — the classic IE split
  • ieee80211_fragment_element(9) — chop an element into fragments 🔪
  • cfg80211_report_wowlan_wakeup(9) — "you woke me up" report 😭
  • cfg80211_crit_proto_stopped(9) — critical proto said peace out
  • ieee80211_get_num_supported_channels(9) — counting channels like counting blessings ⭐
  • cfg80211_check_combinations(9) — does this combo even work?? vibe check
  • cfg80211_iter_combinations(9) — loop those combos
  • cfg80211_get_radio_idx_by_chan(9) — radio index lookups via channel
  • cfg80211_stop_link(9) — link, ur done 🛑
  • cfg80211_stop_iface(9) — iface, ur done too
  • cfg80211_shutdown_all_interfaces(9) — everyone gets shut down, no survivors 💀
  • wiphy_ext_feature_isset(9) — the sibling of this page, checking if a feature is set
  • cfg80211_free_nan_func(9) — freeing NAN funcs, tidy queen 🧹
  • struct cfg80211_nan_match_params(9) — struct holding NAN match params
  • cfg80211_nan_match(9) — NAN match found 🎀
  • cfg80211_nan_func_terminated(9) — the NAN func has left the chat
  • cfg80211_nan_sched_update_done(9) — sched update finished, slay
  • cfg80211_external_auth_request(9) — auth going external, fancy
  • cfg80211_pmsr_report(9) — PMS R report incoming
  • cfg80211_pmsr_complete(9) — PMS R, complete ✅
  • cfg80211_iftype_allowed(9) — is this iftype allowed? ask her
  • cfg80211_assoc_comeback(9) — assoc comeback szn
  • cfg80211_update_owe_info_event(9) — OWE info event, updated
  • cfg80211_bss_flush(9) — flush those BSS entries 🚽✨
  • cfg80211_bss_color_notify(9) — BSS color notif, aesthetic
  • cfg80211_obss_color_collision_notify(9) — collision!! colors clashing, not cute
  • 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: done
  • cfg80211_6ghz_power_type(9) — 6 GHz power type, she's specific
  • cfg80211_links_removed(9) — links got removed, rip
  • struct cfg80211_mlo_reconf_done_data(9) — struct for MLO reconf done data
  • cfg80211_mlo_reconf_add_done(9) — MLO reconf add, done
  • cfg80211_schedule_channels_check(9) — schedule that channel check 📅
  • cfg80211_epcs_changed(9) — EPCS changed, moving on
  • cfg80211_next_nan_dw_notif(9) — next NAN DW notification
  • cfg80211_nan_cluster_joined(9) — joined a NAN cluster 🫂
  • cfg80211_nan_ulw_update(9) — NAN ULW update
  • cfg80211_nan_channel_evac(9) — evacuate that NAN channel, hurry
  • wiphy_locked_debugfs_read(9) — debugfs read, but locked 🔒
  • wiphy_locked_debugfs_write(9) — debugfs write, also locked
  • 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) — find the primary sibling 👯
  • cfg80211_incumbent_signal_notify(9) — incumbent signal notif, pay attention

Like… that's the whole clique 💖 Go read them, they're all in ./include/net and they all slay in their own way.

Okay bestie, that's the page!! You made it to the end, I'm so proud 🫶 This lil gem lives in ./include/net, dated October 2026, and it's your girl wiphy_ext_feature_set(9) saying bye — go set some features, mwah 💋✨

📦 where this page comes from