cfg80211_gtk_rekey_notify(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cfg80211_gtk_rekey_notify(9) — Kernel API Manual 💅

okay so bestie, this is the Kernel API Manual page for cfg80211_gtk_rekey_notify, and its whole personality is notify userspace about driver rekeying. That's the vibe, fr fr. 🫶✨

🌸 NAME 🌸

cfg80211_gtk_rekey_notify — notify userspace about driver rekeying 💖

✨ SYNOPSIS ✨

void cfg80211_gtk_rekey_notify (struct net_device *dev , const u8 *bssid
, const u8 *replay_ctr , gfp_t gfp );

It's a void function — no return value, bestie, so don't wait up for one. 😭 The signature is right there and every parameter matters, no cap. 👑

🎀 ARGUMENTS 🎀

  • dev — network device. That's the network device in question, periodt. 🦋
  • bssid — BSSID of AP (to avoid races). It's the AP's BSSID, and it's there specifically to avoid races — keep that in mind, iykyk. 👑
  • replay_ctr — new replay counter. Literally the new replay counter, bestie. Don't overthink it. ✨
  • gfp — allocation flags. These are the allocation flags, and that's the whole story. 🎀

💖 SEE ALSO 💖

okay bestie, this is the part where the manpage says "go read these too" and then lists, like, literally everything. it's giving "my older sister's contact list." but honestly? each one is a little icon 💅. let's vibe through them.

before we even start, the whole thing lives in the kernel file ./include/net/cfg80211.h — that's the mothership, and these are the sacred texts:

  • 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)

🌸 the capability girlies (ht / vht / he / eht / uhr)

like, every generation of wifi has its own little struct and they're all here being extra:

  • 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)

and the functions that go get that data for you 🫶:

👑 Actions and configuration(9) — the main character section

this is where stuff actually happens, like setting up your interface and your channels. huge.

  • 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)

🦋 channel definition girlies (chandef supremacy)

🎀 beacon / AP setup vibes

  • 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 era (stations are so much)

  • 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)

🌈 mesh / ocb / misc bss things

  • 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) — the "where is everything" section

  • 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) ⭐ (hey, that's our girl)
  • 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 social butterfly section

  • 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 / measurement stuff

  • 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 energy section (struct cfg80211_ops(9) 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)

✨ wiphy lifecycle & accessor girlies

🫶 the work-queue crew (they're busy, okay)

🌟 Utility functions(9) — the little helpers that ate

🦋 Data path helpers(9) — the packets-need-to-go-somewhere section

🌈 Regulatory enforcement infrastructure(9) — the rules are the rules

💀 BSS notifications & mlme girlies (so much happening)

🎀 RFkill integration(9) — turning the radio on and off, iconic

👑 Vendor commands(9) — for the special-est of special cases

🧚 Test mode(9) — shhh, we don't talk about it 🤫

🍓 connect / roam / disconnect notifs (the emotional arc)

💜 station info, tid stats & mgmt tx status

🌸 CQM & radar & cac & all the "something happened" notifications

and that's the whole list bestie, every single one accounted for 🫶 more coming in the next part, don't go anywhere ✨

...and here's the rest of the SEE ALSO fam, no skips, no cuts, every single one of them 💖

okay that's the whole list, every last one, you're SO welcome 💅✨

bestie if you're ever bored just open one of these bad boys and read it like a novel. iykyk 📚🦋

And that's a wrap on cfg80211_gtk_rekey_notify(9), gorgeous 🌸 This little masterpiece lives in ./include/net, is dated October 2026, and honestly? iconic of it. Go forth and rekey, my love — periodt 💖👑🎀

📦 where this page comes from