cfg80211_ge...annel_number(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cfg80211_get_ies_channel_number(9) — Kernel API Manual 🎀

okay bestie, so this one lives in the Kernel API Manual, and the function's full name is literally cfg80211_get_ies_channel_number — yes it's a mouthful, yes it eats, we move 💅

✨ NAME ✨

cfg80211_get_ies_channel_number — returns the channel number from ies

yeah. that's the whole job. it digs through your IEs and hands you back a channel number. no cap, that's it 🫶

🌸 SYNOPSIS 🌸

int cfg80211_get_ies_channel_number (const u8 *ie , size_t ielen , enum
nl80211_band band );

look at her. three args, one int coming back. iconic signature ngl ✨

🦋 ARGUMENTS 🦋

  • ie — the IEs. literally just the IEs, that's the whole vibe 💖
  • ielen — the length of the IEs, so she knows how far to look before she's done 👑
  • band — an enum nl80211_band of the channel, i.e. which band we're living in for this one 🌈

⭐ RETURN ⭐

she gives you back the channel number 💫 — or -1 if none could be determined 😭 (fr fr, that's the "bestie I looked and there's nothing here" answer).

part 1 of 3, keep scrolling, we're so not done yet 💜

🌈 SEE ALSO 🌈

okay bestie, this is the part where the manpage just dumps the entire friend group on you 😭 like yes these are all related pages, and no you don't have to read them all tonight, but they're all here, every single one, i checked twice 💅

The source of truth is the kernel file ./include/net/cfg80211.h, and the starter pack is:

  • Introduction(9) and Device registration(9) — read these first fr, they set the whole scene 🫶

🦋 channels, bands and rates

  • 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)

✨ the capability era (ht → vht → he → eht → uhr)

🎀 Actions and configuration (the whole arc)

  • 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)

💜 chandef girlies, assemble

🍓 survey + crypto + beacon-ish structs

  • 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)

👑 stations, rates, bss params, sar

  • 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)

💀 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)

  • 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)

🌸 auth, pmk, pmsr and friends

  • 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 big wiphy section

⭐ Utility functions

🫶 Data path helpers

💜 Regulatory enforcement infrastructure

🎀 bss + mlme notifications

🦋 RFkill integration, Vendor commands, Test mode

💖 connection / roaming notifications

🔥 mgmt frames, control port, cqm, radar, cac

and that's the whole squad, no cap 💅 like i said, you do NOT have to read all 300-something of these tonight, but they're all here so you never have to wonder "wait was there a page for that" — there was, it's in the list, go off bestie 🫶✨

okay so picking up right where we left off, because this SEE ALSO list is genuinely not done with us yet — the entire kernel API friend group showed up to the party and honestly? iconic. 💅

Here's the rest of the guest list, one by one, so nobody gets left off the invite:

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  • struct cfg80211_ft_event_params(9) — a whole struct, not just a function, respect the range 🫶
  • cfg80211_ft_event(9) — the FT event itself

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And now the NAN corner of the party, which is lowkey the biggest group here 🌸:

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Auth and assoc crew, assemble ✨:

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Colour-change girlies, this is your moment 🌈:

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The modern-Wi-Fi section, i.e. the 6 GHz / MLO / links crowd 👑

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The debugfs duo, because even debugfs needs a buddy system 💜:

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S1G trio, tiny but mighty 🦋:

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And last but absolutely not least:

okay bestie, that's the whole list, every single one, nobody dropped 🫶 that's the entire kernel-API group chat accounted for.

this page lives in ./include/net, and it's the October 2026 edition — so go forth, read the cross-refs, and slay your wireless driver journey. mwah 💖✨🎀

📦 where this page comes from