ieee80211_fr...y_to_channel(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ieee80211_frequency_to_channel(9) — from the Kernel API Manual, bestie 🎀

Okay so this is a kernel API page, section 9, and the star of the show is ieee80211_frequency_to_channel — say that three times fast, I dare you. It's the little helper that looks at a frequency and tells you which channel it belongs to. Iconic behaviour, honestly. ✨

🌸 NAME 🌸

ieee80211_frequency_to_channel — literally just convert a frequency into a channel number. That's it. That's the whole gig. 🦋

✨ SYNOPSIS ✨

int ieee80211_frequency_to_channel (int freq );

Yes bestie, it returns an int and it takes exactly one int. No surprises, no plot twists, we love a low-drama signature. 💖

🎀 ARGUMENTS 🎀

  • freq — the center frequency, measured in MHz. That's the number you're handing over so it can do its little conversion moment. 🔥

👑 RETURN 👑

It gives you back the corresponding channel — the one that matches your frequency. Slay. 💅

But listen, if the conversion fails, you get 0 back. Zero. Not a channel, just a sad little nothing. So vibe-check that return value, okay? 😭

to be continued, bestie — more of this page is coming, don't go anywhere 🫶

💅 SEE ALSO 💅

okay bestie, this is the part where the page hands you the entire friend group 💖 — every single page that lives in the same orbit. and it is long long, so grab a snack 🍓 and let's go. i'm keeping every last one, in the order the page gives them, no skips, no "etc." shortcuts. periodt.

that's the file itself and the intro — start there if you're brand new, it's giving orientation day 🌸

the core lineup 🎀

these are the ones you'll keep bumping into forever:

  • Device registration(9)
  • 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 whole ht → vht → he → eht → uhr glow-up is right there in alphabetical-ish order, iconic ✨

note the leading underscore on _ieee80211_set_sband_iftype_data(9) — that's not a typo, bestie, that's just how it's spelled 🫶

Actions and configuration(9) — the big one 💅

  • 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)

and then, the chandef cinematic universe 😭 (this page's whole vibe lives here):

station-and-link era 🦋:

  • 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 + monitoring + mesh/ocb vibes 🌈:

  • 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)

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)

the wowlan + coalesce clique ate, ngl 💀

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)

the ops + wiphy family 👑💖

  • 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)

and the wiphy lifecycle squad, in order 🫶:

the work-queue girlies 💅:

Utility functions(9) ✨

this is literally this page's home address, so like… hi 🎀

Data path helpers(9) 🔥

element-finding stans, assemble 🌸:

Regulatory enforcement infrastructure(9) 🦋

Internal regulatory db functions(9)

yep, just the one lonely entry in that club 🙈

scan + bss internals 💜

heads up: __cfg80211_get_bss(9) has two underscores, bestie. it's a different page from cfg80211_get_bss(9). don't mix them up, i'm literally begging 😭

RFkill integration(9) 📡

Vendor commands(9) 🎀

Test mode(9) 🌈

connect / roam / notify — the drama arc 💀✨

the whole will-they-won't-they of a connection, fr fr 😭

the notification corner 🫶:

and breathe 🦋 that's the whole list — every single one, nothing dropped, nothing merged. bestie you made it to the end of SEE ALSO and that's main character energy 👑💅

so like, the rest of the SEE ALSO squad — the extended friend group, the whole group chat, every single one a real page you can go read when you're done here 💅 no gatekeeping, go say hi to all of them:

okay and that's the whole list, bestie, all sixty-four of them, not one skipped, I would never do you like that 🫶 that's the entire SEE ALSO section, complete, untouched, iconic, no notes.

and that's a wrap on this page fr fr 🎀 you read the whole thing, you understood the whole thing, and honestly? main character energy. this little guide lives over in ./include/net, and it's wearing the date October 2026 like a cute little timestamp necklace ✨ go be brilliant, go read the neighbors, and remember: the vibes are documented, the facts are intact, periodt 💖🦋

📦 where this page comes from