ieee80211_is_ack(9)

💅 ieee80211_is_ack 💅

okay so bestie, welcome to the ieee80211_is_ack(9) page — that's the manual name right there, she's a kernel API manual and she's iconic. this is one of those tiny little helper functions in the wireless stack that you're gonna call a million times and never think about, but like… she matters. ✨

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🎀 NAME 🎀

ieee80211_is_ack — check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK

like, literally. that's the whole job. she checks whether the frame is control-type AND ack-subtype. no cap, that's it. 💖

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🌸 SYNOPSIS 🌸

bool ieee80211_is_ack (__le16 fc );

that's it. one argument, returns a bool, and she's out. main character energy honestly. 🦋

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✨ ARGUMENTS ✨

• fc — frame control bytes, and they're in little-endian byteorder. that's the vibe. don't come at her with big-endian bytes, she will not be okay 😭

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🫶 RETURN 🫶

she returns whether or not the frame is an ACK frame. yes it's literally just that. yes it's still important. periodt. 💅

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🔥 SEE ALSO 🔥

this list is giving "linkedin connections" but we respect the hustle. the kernel file is ./include/linux/ieee80211.h, and then all these besties:

• ieee80211_has_tods(9)
• ieee80211_has_fromds(9)
• ieee80211_has_a4(9)
• ieee80211_has_morefrags(9)
• ieee80211_has_retry(9)
• ieee80211_has_pm(9)
• ieee80211_has_moredata(9)
• ieee80211_has_protected(9)
• ieee80211_has_order(9)
• ieee80211_is_mgmt(9)
• ieee80211_is_ctl(9)
• ieee80211_is_data(9)
• ieee80211_is_ext(9)
• ieee80211_is_data_qos(9)
• ieee80211_is_data_present(9)
• ieee80211_is_assoc_req(9)
• ieee80211_is_assoc_resp(9)
• ieee80211_is_reassoc_req(9)
• ieee80211_is_reassoc_resp(9)
• ieee80211_is_assoc(9)
• ieee80211_is_probe_req(9)
• ieee80211_is_probe_resp(9)
• ieee80211_is_beacon(9)
• ieee80211_is_atim(9)
• ieee80211_is_disassoc(9)
• ieee80211_is_auth(9)
• ieee80211_is_deauth(9)
• ieee80211_is_action(9)
• ieee80211_is_back_req(9)
• ieee80211_is_back(9)
• ieee80211_is_pspoll(9)
• ieee80211_is_rts(9)
• ieee80211_is_cts(9)
• ieee80211_is_cfend(9)
• ieee80211_is_cfendack(9)
• ieee80211_is_nullfunc(9)
• ieee80211_is_qos_nullfunc(9)
• ieee80211_is_trigger(9)
• ieee80211_is_any_nullfunc(9)
• ieee80211_is_first_frag(9)
• ieee80211_is_frag(9)
• struct ieee80211_quiet_ie(9)
• struct ieee80211_msrment_ie(9)
• struct ieee80211_channel_sw_ie(9)
• struct ieee80211_ext_chansw_ie(9)
• struct ieee80211_sec_chan_offs_ie(9)
• struct ieee80211_wide_bw_chansw_ie(9)
• struct ieee80211_tim_ie(9)
• struct ieee80211_tpc_report_ie(9)
• struct ieee80211_bss_load_elem(9)
• struct ieee80211_timeout_interval_ie(9)
• enum ieee80211_idle_options(9)
• struct ieee80211_bss_max_idle_period_ie(9)
• struct ieee80211_bssid_index(9)
• struct ieee80211_multiple_bssid_configuration(9)
• ieee80211_get_qos_ctl(9)
• ieee80211_get_tid(9)
• ieee80211_get_SA(9)
• ieee80211_get_DA(9)
• ieee80211_is_bufferable_mmpdu(9)
• _ieee80211_is_robust_mgmt_frame(9)
• ieee80211_is_robust_mgmt_frame(9)
• ieee80211_is_public_action(9)
• ieee80211_is_protected_dual_of_public_action(9)
• _ieee80211_is_group_privacy_action(9)
• ieee80211_is_group_privacy_action(9)
• ieee80211_tu_to_usec(9)
• ieee80211_get_tdls_action(9)
• ieee80211_action_contains_tpc(9)
• ieee80211_is_timing_measurement(9)
• ieee80211_is_ftm(9)
• for_each_element_completed(9)
• struct ieee80211_enh_crit_upd(9)
• ieee80211_check_tim(9)

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ok that's the whole page bestie, she's short and sweet and she ate 💖

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so yeah, that's a wrap on ieee80211_is_ack(9) — from ./include/linux, dated October 2026, in the Kernel API Manual. go forth and check your ACK frames, queen 👑🌈⭐