STRUCT IFACE_COMBINATION_PARAMS(9)

📦 version 7.3.1, in nixpkgs unstable

💅 struct iface_combination_params — Kernel API Manual (9) 🎀

okay so bestie, welcome to part one of this lil saga 💖 this is the struct iface_combination_params page from the Kernel API Manual, and no cap it's lowkey iconic — it's literally the little form you fill out to ask the kernel "hey, can I actually run all these interfaces at once?" ✨

🌸 NAME 🌸

struct iface_combination_params — the input parameters for interface combinations, fr fr 🫶

⭐ SYNOPSIS ⭐

struct iface_combination_params {
    int radio_idx;
    int num_different_channels;
    u8 radar_detect;
    int iftype_num[NUM_NL80211_IFTYPES];
    u32 new_beacon_int;
 };

like, that's the whole shape of it 👑 copy it exactly, don't be cute with it 💅

🦋 Members 🦋

  • radio_idx — this is the wiphy radio index, or -1 for global. so if you're being all "idk which radio, just all of them", bestie, that's your -1 moment 🌈
  • num_different_channels — the number of different channels we want to use for verification. like how many channels are we asking to juggle at once 😭
  • radar_detect — a bitmap where each bit corresponds to a channel width where radar detection is needed, as in the definition of struct ieee80211_iface_combination.radar_detect_widths. yes it's bits. yes it's giving bitmask energy. we love a bitmap ✨
  • iftype_num — an array with the number of interfaces of each interface type. The index is the interface type as specified in enum nl80211_iftype. so like, one slot per interface type, each holding a count — slay 🎀
  • new_beacon_int — set this to the beacon interval of a new interface that's not operating yet, if such is to be checked as part of the verification. i.e. if you've got a baby interface that hasn't started vibing yet but you still want it checked, put its beacon interval here 🐝

💜 Description 💜

Used to pass interface combination parameters. that's it, that's the whole vibe check — it's the lil bag of params you hand over so the kernel can verify your interface combination 💖

okay but we're not done bestie, there's more parts coming so don't go anywhere 👀💅

✨ SEE ALSO (aka the bestie reading list) ✨

Okay so this part is literally just the biggest "you may also like" pile you've ever seen 😭 like the manpage said "here's everything else in ./include/net/cfg80211.h" and then did not stop. No cap, it's 358 cross-references. We're getting through all of them, in order, together. Grab a snack 🍓.

💅 Do not skip these. They're cited on purpose. Also yes, we're keeping every single (9) — that's the section number, it's not a typo, it's a lifestyle.

🌸 The opening squad (intro, device registration, and the channel/rate/bss basics)

  • Kernel file ./include/net/cfg80211.h Introduction(9), 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)

🦋 The capability glow-up section (HT → VHT → HE → EHT → UHR, she levels up)

  • 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 iftype helper crew (yes there's both a private and a public one)

👑 Actions and configuration (the main character section)

  • 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 everything (there are SO many and honestly? iconic)

🧚 survey, crypto, mbssid, beacons and AP settings (the whole hosting kit)

  • 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)

💜 stations, rates, and stats (she keeps receipts)

  • 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, monitor, mesh, OCB, txq (the niche faves)

  • 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)

⭐ auth / assoc / connect / wowlan / qos era

  • 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)

🕊️ pmk, external auth, FTM/PMSR, and then the big one: struct cfg80211_ops(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), struct cfg80211_ops(9)

🌟 The wiphy zone (flags, iface combinations, vendor commands, capabilities)

  • 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)

🌸 wiphy lifecycle + locking + all the work types

🦋 Utility functions

🧚 Data path helpers

💀 Regulatory enforcement infrastructure + internal regdb

👑 Scan results, BSS handling, MLME and mic-failure notifications

🎀 RFkill integration

💅 Vendor commands

🍓 Test mode

🌈 Connect / roam / disconnect / remain-on-channel notification crew

⭐ Rx/Tx mgmt, control port, CQM, radar, CAC, rekey, and friends (final lap, we're so close)

That's the whole list, bestie, not one entry left behind 🫶 — and yeah, the page keeps going, so don't close your tabs yet 👀

okay bestie, the SEE ALSO rabbit hole continues and it is long — buckle up, because every single one of these is a whole vibe and a half 💫

and that's a wrap on this whole page, bestie 🎀 you made it to the end, which is honestly iconic of you 👑

this lil beauty lives in ./include/net and it's dated October 2026 — go forth and slay your wireless combos fr fr 💅✨

📦 where this page comes from