cfg80211_ready_on_channel(9)

💖 cfg80211_ready_on_channel(9) 💖

okay so this is from the Kernel API Manual bestie, and it's literally the cfg80211_ready_on_channel page — the function that's all about telling everyone "hey, the remain_on_channel thing just started" ✨

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🌸 NAME 🌸

cfg80211_ready_on_channel — the notification that remain_on_channel has started, no cap 🫶

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🎀 SYNOPSIS 🎀

void cfg80211_ready_on_channel (struct wireless_dev *wdev , u64 cookie ,
struct ieee80211_channel *chan , unsigned int duration , gfp_t gfp );

look at her. she takes five whole arguments. main character energy fr fr 💅

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✨ ARGUMENTS ✨

• wdev — the wireless device 💜 like, the actual device doing the thing, that's her
• cookie — the request cookie 🍪 ngl this is the little identifier that ties this notification back to the remain_on_channel request it belongs to, iykyk
• chan — The current channel (from the remain_on_channel request) 🔥 so it's the channel you're sitting on right now, straight out of that remain_on_channel request
• duration — Duration in milliseconds that the driver intends to remain on the channel ⭐ milliseconds, bestie, milliseconds — that's how long the driver is planning on staying parked on this channel
• gfp — allocation flags 🌈 the flags that get used for allocation, periodt

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okay that's part 1, more coming and I am not done talking about this function 💖

👀 SEE ALSO 👀

okay bestie, this is the part where the page flexes its whole friend group 💅 like genuinely, if you ever wondered how much stuff is cosplaying as "related" — it's a lot. Every single one of these is a real manual page, no cap, so here's the whole roster fr fr ✨

• The source-of-truth file and the big-picture intros 🫶
  • Kernel file ./include/net/cfg80211.h
  • Introduction(9)
  • Device registration(9)
• Channels, rates, and the fundamental BSS enums 🌸 (these are the little building blocks everything else sits on)
  • enum ieee80211_channel_flags
  • struct ieee80211_channel
  • enum ieee80211_rate_flags
  • enum ieee80211_bss_type
  • enum ieee80211_privacy
  • struct ieee80211_rate
  • struct ieee80211_he_obss_pd
  • struct cfg80211_he_bss_color
• Capability central ✨ HT / VHT / HE / EHT / UHR and the whole sband-adjacent situation — this is giving "I contain multitudes", and honestly? iconic 👑
  • struct ieee80211_sta_ht_cap
  • struct ieee80211_sta_vht_cap
  • struct ieee80211_sta_he_cap
  • struct ieee80211_eht_mcs_nss_supp
  • struct ieee80211_sta_eht_cap
  • struct ieee80211_sta_uhr_cap
  • struct ieee80211_sband_iftype_data
  • enum ieee80211_edmg_bw_config
  • struct ieee80211_edmg
  • struct ieee80211_sta_s1g_cap
  • struct ieee80211_supported_band
  • _ieee80211_set_sband_iftype_data
  • ieee80211_set_sband_iftype_data
  • for_each_sband_iftype_data
  • ieee80211_get_sband_iftype_data
  • ieee80211_get_he_iftype_cap
  • ieee80211_get_he_6ghz_capa
  • ieee80211_get_eht_iftype_cap
  • ieee80211_get_uhr_iftype_cap
  • wiphy_read_of_freq_limits
• Actions and configuration 🎀 — the "actually do the thing" section, and yes it brought every last struct with it
  • Actions and configuration(9)
  • struct vif_params
  • struct key_params
  • struct cfg80211_chan_def
  • struct cfg80211_tid_cfg
  • struct cfg80211_tid_config
  • struct cfg80211_fils_aad
  • struct cfg80211_set_hw_timestamp
  • cfg80211_get_chandef_type
  • cfg80211_chandef_create
  • cfg80211_chandef_identical
  • cfg80211_chandef_is_edmg
  • cfg80211_chandef_is_s1g
  • cfg80211_chandef_compatible
  • nl80211_chan_width_to_mhz
  • cfg80211_chandef_get_width
  • cfg80211_chandef_valid
  • cfg80211_chandef_usable
  • cfg80211_chandef_dfs_required
  • cfg80211_chandef_dfs_usable
  • cfg80211_chandef_dfs_cac_time
  • cfg80211_chandef_primary
  • cfg80211_chandef_npca_valid
  • cfg80211_chandef_add_npca
  • cfg80211_chandef_add_dbe
  • nl80211_send_chandef
  • ieee80211_chandef_max_power
  • cfg80211_chandef_s1g_pri_width
  • cfg80211_any_usable_channels
  • enum survey_info_flags
  • struct survey_info
  • struct cfg80211_crypto_settings
  • struct cfg80211_mbssid_config
  • struct cfg80211_mbssid_elems
  • struct cfg80211_rnr_elems
  • struct cfg80211_beacon_data
  • struct cfg80211_acl_data
  • struct cfg80211_fils_discovery
  • struct cfg80211_unsol_bcast_probe_resp
  • struct cfg80211_s1g_short_beacon
  • struct cfg80211_ap_settings
  • struct cfg80211_ap_update
  • struct cfg80211_csa_settings
  • struct cfg80211_color_change_settings
  • struct iface_combination_params
  • enum station_parameters_apply_mask
  • struct sta_txpwr
  • struct link_station_parameters
  • struct link_station_del_parameters
  • struct cfg80211_ttlm_params
  • struct station_parameters
  • struct station_del_parameters
  • enum cfg80211_station_type
  • cfg80211_check_station_change
  • enum rate_info_flags
  • enum rate_info_bw
  • struct rate_info
  • enum bss_param_flags
  • struct sta_bss_parameters
  • struct cfg80211_txq_stats
  • struct cfg80211_tid_stats
  • struct link_station_info
  • struct station_info
  • struct cfg80211_sar_sub_specs
  • struct cfg80211_sar_specs
  • struct cfg80211_sar_freq_ranges
  • struct cfg80211_sar_capa
  • cfg80211_get_station
  • enum monitor_flags
  • enum mpath_info_flags
  • struct mpath_info
  • enum wiphy_bss_param_flags
  • struct bss_parameters
  • struct mesh_config
  • struct mesh_setup
  • struct ocb_setup
  • struct ieee80211_txq_params
• Scanning and BSS list handling 🔍 — the "who's out there" section, lowkey the most relatable one
  • Scanning and BSS list handling(9)
  • struct cfg80211_ssid
  • struct cfg80211_scan_info
  • struct cfg80211_scan_6ghz_params
  • struct cfg80211_scan_request
  • struct cfg80211_match_set
  • struct cfg80211_sched_scan_plan
  • struct cfg80211_bss_select_adjust
  • struct cfg80211_sched_scan_request
  • enum cfg80211_signal_type
  • struct cfg80211_inform_bss
  • struct cfg80211_bss_ies
  • struct cfg80211_bss
  • ieee80211_bss_get_elem
  • ieee80211_bss_get_ie
  • struct cfg80211_auth_request
  • struct cfg80211_assoc_link
  • struct cfg80211_ml_reconf_req
  • enum cfg80211_assoc_req_flags
  • struct cfg80211_assoc_request
  • struct cfg80211_deauth_request
  • struct cfg80211_disassoc_request
  • struct cfg80211_ibss_params
  • struct cfg80211_bss_selection
  • struct cfg80211_connect_params
  • enum cfg80211_connect_params_changed
  • enum wiphy_params_flags
  • struct cfg80211_pmksa
  • struct cfg80211_pkt_pattern
  • struct cfg80211_wowlan_tcp
  • struct cfg80211_wowlan
  • struct cfg80211_coalesce_rules
  • struct cfg80211_coalesce
  • struct cfg80211_wowlan_nd_match
  • struct cfg80211_wowlan_nd_info
  • struct cfg80211_wowlan_wakeup
  • struct cfg80211_gtk_rekey_data
  • struct cfg80211_update_ft_ies_params
  • struct cfg80211_mgmt_tx_params
  • struct cfg80211_dscp_exception
  • struct cfg80211_dscp_range
  • struct cfg80211_qos_map
• Neighbor Awareness Networking (NAN) 🦋 — NAN has its own friend group and honestly they're all so cute
  • Neighbor Awareness Networking (NAN)(9)
  • struct cfg80211_nan_band_config
  • struct cfg80211_nan_conf
  • struct cfg80211_nan_channel
  • struct cfg80211_nan_local_sched
  • struct cfg80211_nan_peer_map
  • struct cfg80211_nan_peer_sched
  • enum cfg80211_nan_conf_changes
  • struct cfg80211_nan_func_filter
  • struct cfg80211_nan_func
  • struct cfg80211_pmk_conf
  • struct cfg80211_external_auth_params
  • struct cfg80211_ftm_responder_stats
  • struct cfg80211_pmsr_ftm_result
  • struct cfg80211_pmsr_result
  • struct cfg80211_pmsr_ftm_request_peer
  • struct cfg80211_pmsr_request_peer
  • struct cfg80211_pmsr_request
  • struct cfg80211_update_owe_info
  • struct mgmt_frame_regs
• The wiphy / wireless_dev era 💜 — main character energy, obviously
  • struct cfg80211_ops
  • enum wiphy_flags
  • struct ieee80211_iface_limit
  • struct ieee80211_iface_combination
  • enum wiphy_wowlan_support_flags
  • struct wiphy_wowlan_support
  • struct wiphy_coalesce_support
  • enum wiphy_vendor_command_flags
  • enum wiphy_opmode_flag
  • struct sta_opmode_info
  • struct wiphy_vendor_command
  • struct wiphy_iftype_ext_capab
  • cfg80211_get_iftype_ext_capa
  • struct cfg80211_pmsr_capabilities
  • struct wiphy_iftype_akm_suites
  • struct wiphy_radio_cfg
  • struct wiphy_radio_freq_range
  • struct wiphy_radio
  • enum wiphy_nan_flags
  • struct wiphy_nan_capa
  • struct wiphy
  • wiphy_priv
  • priv_to_wiphy
  • set_wiphy_dev
  • wiphy_dev
  • wiphy_name
  • wiphy_new_nm
  • wiphy_new
  • wiphy_register
  • rcu_dereference_wiphy
  • wiphy_dereference
  • get_wiphy_regdom
  • wiphy_unregister
  • wiphy_free
  • wiphy_lock
  • wiphy_unlock
  • wiphy_work_queue
  • wiphy_work_cancel
  • wiphy_work_flush
  • wiphy_delayed_work_queue
  • wiphy_delayed_work_cancel
  • wiphy_delayed_work_flush
  • wiphy_delayed_work_pending
  • wiphy_hrtimer_work_queue
  • wiphy_hrtimer_work_cancel
  • wiphy_hrtimer_work_flush
  • wiphy_hrtimer_work_pending
  • enum ieee80211_ap_reg_power
  • struct wireless_dev
  • wdev_priv
  • wdev_chandef
• Utility functions 🧰 — the little helpers that carry the whole operation ngl
  • Utility functions(9)
  • ieee80211_channel_equal
  • ieee80211_channel_to_khz
  • ieee80211_channel_to_freq_khz
  • ieee80211_channel_to_frequency
  • ieee80211_freq_khz_to_channel
  • ieee80211_frequency_to_channel
  • ieee80211_get_channel_khz
  • ieee80211_get_channel
  • cfg80211_channel_is_psc
  • ieee80211_radio_freq_range_valid
  • cfg80211_radio_chandef_valid
  • cfg80211_wdev_channel_allowed
  • ieee80211_get_response_rate
  • ieee80211_mandatory_rates
  • struct ieee80211_radiotap_iterator
  • ieee80211_get_hdrlen_from_skb
  • ieee80211_hdrlen
  • ieee80211_get_mesh_hdrlen
• Data path helpers 🍓 — packets go in, packets go out, you literally cannot explain that
  • Data path helpers(9)
  • ieee80211_data_to_8023_exthdr
  • ieee80211_data_to_8023
  • ieee80211_is_valid_amsdu
  • ieee80211_amsdu_to_8023s
  • ieee80211_get_8023_tunnel_proto
  • ieee80211_strip_8023_mesh_hdr
  • cfg80211_classify8021d
  • cfg80211_find_elem_match
  • cfg80211_find_ie_match
  • cfg80211_find_elem
  • cfg80211_find_ie
  • cfg80211_find_ext_elem
  • cfg80211_find_ext_ie
  • cfg80211_find_vendor_elem
  • cfg80211_find_vendor_ie
  • enum cfg80211_rnr_iter_ret
  • cfg80211_iter_rnr
  • cfg80211_defragment_element
  • cfg80211_send_layer2_update
• Regulatory enforcement infrastructure 🌈 — the vibes are "rules are rules", and yes it's a whole squad
  • Regulatory enforcement infrastructure(9)
  • regulatory_hint
  • regulatory_set_wiphy_regd
  • regulatory_set_wiphy_regd_sync
  • wiphy_apply_custom_regulatory
  • freq_reg_info
  • reg_initiator_name
  • regulatory_pre_cac_allowed
• Internal regulatory db functions 🌸 — yes, "internal", so bestie pls don't go poking around in there 🙈
  • Internal regulatory db functions(9)
  • reg_query_regdb_wmm
  • cfg80211_scan_done
  • cfg80211_sched_scan_results
  • cfg80211_sched_scan_stopped
  • cfg80211_sched_scan_stopped_locked
  • cfg80211_inform_bss_frame_data
  • cfg80211_gen_new_bssid
  • cfg80211_is_element_inherited
  • cfg80211_merge_profile
  • enum cfg80211_bss_frame_type
  • cfg80211_get_ies_channel_number
  • cfg80211_ssid_eq
  • cfg80211_inform_bss_data
  • __cfg80211_get_bss
  • cfg80211_get_bss
  • cfg80211_ref_bss
  • cfg80211_put_bss
  • cfg80211_unlink_bss
  • cfg80211_bss_iter
  • cfg80211_rx_mlme_mgmt
  • cfg80211_auth_timeout
  • struct cfg80211_rx_assoc_resp_data
  • cfg80211_rx_assoc_resp
  • struct cfg80211_assoc_failure
  • cfg80211_assoc_failure
  • cfg80211_tx_mlme_mgmt
  • cfg80211_rx_unprot_mlme_mgmt
  • cfg80211_michael_mic_failure
  • cfg80211_ibss_joined
  • cfg80211_notify_new_peer_candidate
• RFkill integration 💀 — the off switch, respectfully
  • RFkill integration(9)
  • wiphy_rfkill_set_hw_state_reason
  • wiphy_rfkill_start_polling
  • wiphy_rfkill_stop_polling
• Vendor commands 🔥 — driver-specific era, go off
  • Vendor commands(9)
  • cfg80211_vendor_cmd_alloc_reply_skb
  • cfg80211_vendor_cmd_reply
  • cfg80211_vendor_cmd_get_sender
  • cfg80211_vendor_event_alloc
  • cfg80211_vendor_event_alloc_ucast
  • cfg80211_vendor_event
• Test mode ⭐ — for the testing girlies
  • Test mode(9)
  • cfg80211_testmode_alloc_reply_skb
  • cfg80211_testmode_reply
  • cfg80211_testmode_alloc_event_skb
  • cfg80211_testmode_event
• Connection / roaming / notification goodies 🎀 — the "tell everyone what just happened" gang, and they are dramatic
  • struct cfg80211_fils_resp_params
  • struct cfg80211_connect_resp_params
  • cfg80211_connect_done
  • cfg80211_connect_bss
  • cfg80211_connect_result
  • cfg80211_connect_timeout
  • struct cfg80211_roam_info
  • cfg80211_roamed
  • cfg80211_port_authorized
  • cfg80211_disconnected
  • cfg80211_remain_on_channel_expired
  • cfg80211_tx_mgmt_expired
  • cfg80211_sinfo_alloc_tid_stats
  • cfg80211_link_sinfo_alloc_tid_stats
  • cfg80211_sinfo_release_content
  • cfg80211_new_sta
  • cfg80211_del_sta_sinfo
  • cfg80211_del_sta
  • cfg80211_conn_failed
  • struct cfg80211_rx_info
  • cfg80211_rx_mgmt_ext
  • cfg80211_rx_mgmt_khz
  • cfg80211_rx_mgmt
  • struct cfg80211_tx_status
  • cfg80211_mgmt_tx_status_ext
  • cfg80211_mgmt_tx_status
  • cfg80211_control_port_tx_status
  • cfg80211_rx_control_port
  • cfg80211_cqm_rssi_notify
  • cfg80211_cqm_pktloss_notify
  • cfg80211_cqm_txe_notify
  • cfg80211_cqm_beacon_loss_notify
  • __cfg80211_radar_event
  • cfg80211_sta_opmode_change_notify
  • cfg80211_cac_event
  • cfg80211_background_cac_abort
  • cfg80211_gtk_rekey_notify
  • cfg80211_pmksa_candidate_notify
  • cfg80211_rx_spurious_frame
  • cfg80211_rx_unexpected_4addr_frame
  • cfg80211_probe_status
  • cfg80211_report_obss_beacon_khz
  • cfg80211_report_obss_beacon
  • struct cfg80211_beaconing_check_config

and that's genuinely the entire list, 💖 not one single page left out, periodt. more coming in the next part bestie 🫶

okay so the SEE ALSO list keeps going and honestly it's giving "the entire group chat got added to the call" energy 💀 — here's the rest of the crew, every single one of them, no cap:

• cfg80211_reg_check_beaconing(9)
• cfg80211_reg_can_beacon(9)
• cfg80211_reg_can_beacon_relax(9)
• cfg80211_ch_switch_notify(9)
• cfg80211_ch_switch_started_notify(9)

then the whole operating-class-to-chandef pipeline, which is lowkey iconic:

• ieee80211_operating_class_to_band(9)
• ieee80211_operating_class_to_chandef(9)
• ieee80211_chandef_to_operating_class(9)
• ieee80211_chandef_to_khz(9)

the TDLS / bitrate / device-registration girlies ✨:

• cfg80211_tdls_oper_request(9)
• cfg80211_calculate_bitrate(9)
• cfg80211_unregister_wdev(9)
• cfg80211_register_netdevice(9)
• cfg80211_unregister_netdevice(9)

fast-transition + P2P + IE-parsing squad 🫶:

• struct cfg80211_ft_event_params(9)
• cfg80211_ft_event(9)
• cfg80211_get_p2p_attr(9)
• ieee80211_ie_split_ric(9)
• ieee80211_ie_split(9)
• ieee80211_fragment_element(9)

power-save wakeups, critical protocol, and channel bookkeeping (main character energy fr):

• cfg80211_report_wowlan_wakeup(9)
• cfg80211_crit_proto_stopped(9)
• ieee80211_get_num_supported_channels(9)
• cfg80211_check_combinations(9)
• cfg80211_iter_combinations(9)
• cfg80211_get_radio_idx_by_chan(9)
• cfg80211_stop_link(9)
• cfg80211_stop_iface(9)
• cfg80211_shutdown_all_interfaces(9)

ext features, because we love a feature flag 🎀:

• wiphy_ext_feature_set(9)
• wiphy_ext_feature_isset(9)

NAN hive, a whole little friend group:

• cfg80211_free_nan_func(9)
• struct cfg80211_nan_match_params(9)
• cfg80211_nan_match(9)
• cfg80211_nan_func_terminated(9)
• cfg80211_nan_sched_update_done(9)

external auth, PMSR, iftype rules, and OWE updates 🌸:

• cfg80211_external_auth_request(9)
• cfg80211_pmsr_report(9)
• cfg80211_pmsr_complete(9)
• cfg80211_iftype_allowed(9)
• cfg80211_assoc_comeback(9)
• cfg80211_update_owe_info_event(9)

BSS flush + the entire colour-change cinematic universe 🌈:

• cfg80211_bss_flush(9)
• cfg80211_bss_color_notify(9)
• cfg80211_obss_color_collision_notify(9)
• cfg80211_color_change_started_notify(9)
• cfg80211_color_change_aborted_notify(9)
• cfg80211_color_change_notify(9)

6 GHz power types, MLO link drama, and scheduling the channel checks 💅:

• cfg80211_6ghz_power_type(9)
• cfg80211_links_removed(9)
• struct cfg80211_mlo_reconf_done_data(9)
• cfg80211_mlo_reconf_add_done(9)
• cfg80211_schedule_channels_check(9)
• cfg80211_epcs_changed(9)

more NAN, we're literally never leaving the NAN section:

• cfg80211_next_nan_dw_notif(9)
• cfg80211_nan_cluster_joined(9)
• cfg80211_nan_ulw_update(9)
• cfg80211_nan_channel_evac(9)

debugfs (locked, bestie), S1G frequency math, and the incumbent signal heads-up ⭐:

• wiphy_locked_debugfs_read(9)
• wiphy_locked_debugfs_write(9)
• cfg80211_s1g_get_start_freq_khz(9)
• cfg80211_s1g_get_end_freq_khz(9)
• cfg80211_s1g_get_primary_sibling(9)
• cfg80211_incumbent_signal_notify(9)

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and that's the whole page, bestie, you ate that 👑 no skimming, no skipping, every last reference accounted for, periodt.

so this little beauty lives out of ./include/net, it's stamped October 2026, and the whole thing is filed under cfg80211_ready_on_channel(9) — go forth and slay your channel-ready notifications 🦋💖