cfg80211_bss_flush(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cfg80211_bss_flush — a Kernel API Manual moment (section 9, bestie, we're in the kernel API manual)

okay so picture this: you open cfg80211_bss_flush(9) and it's giving "short and iconic". That's the whole vibe. Let me walk you through it 🫶

✨ NAME ✨

cfg80211_bss_flush — literally resets all the scan entries. all of them. every last one. it's giving "clean slate, new semester, fresh notebook" energy 🌸

🦋 SYNOPSIS 🦋

void cfg80211_bss_flush (struct wiphy *wiphy );

no cap, that's the whole signature. returns void — meaning it does not come back with receipts, it just does the thing and leaves 👑

🎀 ARGUMENTS 🎀

  • wiphy — the wiphy. that's it. that's the argument. it's the wiphy, bestie 💖

so yeah, that's the setup — one function, one argument, one job: resetting all the scan entries on the wiphy you hand it. short, sweet, slays 💅

hold that thought though, because there's more of this page coming and we are not done yet 🧚

💫 SEE ALSO 💫

okay bestie, this is the part where the page just dumps every single related thing at you, and honestly? it's giving reference-section main character energy. no cap, this list is LONG. but every one of these is a real thing you can go read next, so let's get into it 💅

first up, the actual source file this whole page lives in:

  • ./include/net/cfg80211.h — the kernel file, the mothership, the place where it all lives 🏠

then the big intro-level stuff, aka your orientation reading:

and now the band/channel/rate fundamentals — literally the whole alphabet of wifi:

  • enum ieee80211_channel_flags(9)
  • struct ieee80211_channel(9)
  • enum ieee80211_rate_flags(9)
  • enum ieee80211_bss_type(9)
  • enum ieee80211_privacy(9)
  • struct ieee80211_rate(9)
  • struct ieee80211_he_obss_pd(9)
  • struct cfg80211_he_bss_color(9)
  • struct ieee80211_sta_ht_cap(9)
  • struct ieee80211_sta_vht_cap(9)
  • struct ieee80211_sta_he_cap(9)
  • struct ieee80211_eht_mcs_nss_supp(9)
  • struct ieee80211_sta_eht_cap(9)
  • struct ieee80211_sta_uhr_cap(9)
  • struct ieee80211_sband_iftype_data(9)
  • enum ieee80211_edmg_bw_config(9)
  • struct ieee80211_edmg(9)
  • struct ieee80211_sta_s1g_cap(9)
  • struct ieee80211_supported_band(9)

the sband-and-iftype-helper crew, obsessed with them actually:

now we're getting into Actions and configuration(9) territory, and this is where the list really starts to pop off. buckle up 🎀

  • Actions and configuration(9)
  • struct vif_params(9)
  • struct key_params(9)
  • struct cfg80211_chan_def(9)
  • struct cfg80211_tid_cfg(9)
  • struct cfg80211_tid_config(9)
  • struct cfg80211_fils_aad(9)
  • struct cfg80211_set_hw_timestamp(9)

the entire chandef cinematic universe, and yes there is a lot of it:

survey + crypto + the AP-side structs (beacon era 💖):

  • 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)

station params, rates, and all the stats you could ever want ✨

  • 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)

SAR (specific absorption rate) stuff, lowkey important, don't skip it:

  • 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)

monitor + mesh path + BSS params + mesh/ocb/txq setup — the "everything else in config" section fr fr:

  • 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)

💀 Scanning and BSS list handling(9) — this one's a whole vibe, get comfy:

  • 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)

connection-era structs, the auth/assoc/deauth/disassoc gang 🫶:

  • 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)

power-save / wowlan / coalesce / GTK rekey / mgmt tx / QoS map goodness:

  • 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)(9) — the whole NAN family, they ate:

  • 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)

more connect/external-auth/FTM/PMSR/OWE things, iconic lineup:

  • 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)

the ops + wiphy + iface combination era 👑

  • 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)
  • struct wiphy(9)

the wiphy lifecycle + private-data + locking + work-queue helpers, literally the plumbing of the whole thing 🧚:

wireless dev + reg power + chandef-on-wdev:

⭐ Utility functions(9) — the lil helpers that do the most:

radiotap + header-length helpers:

🌸 Data path helpers(9) — converting frames and finding IEs, the actual useful stuff:

the element-finding family (this is where you live if you parse IEs all day):

💜 Regulatory enforcement infrastructure(9) — yes the rules matter, read them:

Internal regulatory db functions(9) — internal, so yk, internal:

back to BSS handling with the reporting/inform/unlink crew:

MLME / mgmt notification squad — auth, assoc, deauth, michael mic failure, ibss joined, and peer candidate stuff:

🔥 RFkill integration(9) — hardware kill switch, not a drill:

🦋 Vendor commands(9) — where the driver-specific magic happens:

🧚 Test mode(9) — for testing, obvi:

fils/connect/roam/disconnect outcome reporting — the "tell the world what happened" gang:

remain-on-channel + mgmt tx expiry + station info stat allocation:

new/del station + conn failure, the station lifecycle:

rx path + tx status + control port + CQM notifications — the "events, events, events" section 🌈:

radar + CAC + opmode change + GTK rekey + PMKSA candidate — the "tell userspace something's up" crew:

and finally, the odd-frame reporters + probe status + OBSS beacon reporting + the beaconing check config that closes us out 💖:

okay that was a LOT, i know 😭 but that's genuinely every single reference on the page — no skips, no cuts, periodt. if you made it to the bottom you're officially a wifi scholar, bestie 👑✨

…and the rest of the crew, fr fr — every single one of these is a real page you can pull up, so go be nosy 👀

That's the whole roster — sixty-three whole pages, and yeah, I listed every one of them, don't test me 💜

ngl bestie, that's a lot of SEE ALSO — if you actually read all of them in one sitting, you're built different. hydrate first. 🍓

Okay so credits, because we stan attribution: this page lives in the source tree at ./include/net, it's the cfg80211_bss_flush(9) page, and the version stamp on it is October 2026. Love that for us — future-dated and still flawless. 💅✨🎀

Now go flush some BSSes, king. 🫶👑

📦 where this page comes from