STRUCT IWL_TIME_MSMT_NOTIFY(9)

✨ struct iwl_time_msmt_notify — Kernel API Manual, section 9 ✨

okay bestie so this is the iwl_time_msmt_notify(9) page 💅 it lives in the Kernel API Manual and it's basically the glow-up doc for a struct that carries a Time Sync measurement notification (that's TM/FTM, iykyk) along with all the extra meta data that comes with it 🎀

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🌸 NAME 🌸

struct iwl_time_msmt_notify — the Time Sync measurement notification for TM/FTM, plus the additional meta data that tags along with it 🦋

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✨ SYNOPSIS ✨

struct iwl_time_msmt_notify {
    u8 peer_addr[ETH_ALEN];
    u8 reserved[2];
    __le32 dialog_token;
    __le32 followup_dialog_token;
    __le32 t1_hi;
    __le32 t1_lo;
    __le32 t1_max_err;
    __le32 t4_hi;
    __le32 t4_lo;
    __le32 t4_max_err;
    __le32 t2_hi;
    __le32 t2_lo;
    __le32 t2_max_err;
    __le32 t3_hi;
    __le32 t3_lo;
    __le32 t3_max_err;
    struct iwl_time_msmt_ptp_ctx ptp;
 };

she's giving very structured, very demure 🫶

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💖 Members 💖

okay so here's the whole cast, member by member — no skipping, we respect every field in this house 👑

• peer_addr — the peer address 💌 literally whose address it is.
• reserved — reserved, bestie. it's there for alignment. do not touch, do not pass go 🙈
• dialog_token — the measurement flow dialog token number, the main character identifier of the exchange 🔥
• followup_dialog_token — the Measurement flow previous dialog token number. yes it's the ex, the one from before 💀
• t1_hi — high dword of the t1-time, aka when the Tx'ed action frame departed on the sender side, measured in units of 10 nano seconds ⏱️
• t1_lo — low dword of that same t1-time (Tx'ed action frame departure, sender side, units of 10 nano seconds). together with t1_hi she's whole ✨
• t1_max_err — the maximum t1-time error, in units of 10 nano seconds. everybody has flaws, even timestamps 😭
• t4_hi — high dword of the t4-time, which is when the Rx'ed action frame's Ack arrived on the sender side, in units of 10 nano seconds 🎀
• t4_lo — low dword of that t4-time (Rx'ed action frame's Ack arrival, sender side, units of 10 nano seconds) 🌸
• t4_max_err — maximum t4-time error, units of 10 nano seconds 🦋
• t2_hi — high dword of the t2-time, the arrival of the Rx'ed action frame on the receiver side, in units of 10 nano seconds 💜
• t2_lo — low dword of that t2-time (Rx'ed action frame arrival, receiver side, units of 10 nano seconds) 🌈
• t2_max_err — maximum t2-time error, units of 10 nano seconds 🍓
• t3_hi — high dword of the t3-time, the departure of the Tx'ed action frame's Ack on the receiver side, in units of 10 nano seconds ⭐
• t3_lo — low dword of that t3-time (Tx'ed action frame's Ack departure, receiver side, units of 10 nano seconds) 💫
• t3_max_err — maximum t3-time error, units of 10 nano seconds 🧚
• ptp — vendor specific information element. the mystery guest, the vibe check at the end of the struct 👀

ngl the vibe here is: four timestamps (t1 through t4), each split into a hi/lo dword pair plus a max-err, all in units of 10 nano seconds. copy that energy exactly, no cap 💅

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👑 SEE ALSO 👑

the whole friend group, all linked and accounted for, so you can go hang out in the kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/datapath.h and meet everyone 🫶

• enum iwl_data_path_subcmd_ids(9)
• struct iwl_mu_group_mgmt_cmd(9)
• struct iwl_mu_group_mgmt_notif(9)
• struct iwl_time_sync_cfg_cmd(9)
• enum iwl_synced_time_operation(9)
• struct iwl_synced_time_cmd(9)
• struct iwl_synced_time_rsp(9)
• struct iwl_time_msmt_ptp_ctx(9)
• struct iwl_time_msmt_cfm_notify(9)
• struct iwl_channel_estimation_cfg(9)
• enum iwl_thermal_dual_chain_req_events(9)
• struct iwl_thermal_dual_chain_request(9)
• struct iwl_rlc_properties(9)
• struct iwl_sad_properties(9)
• struct iwl_rlc_config_cmd(9)
• enum iwl_rx_baid_action(9)
• struct iwl_rx_baid_cfg_cmd_alloc(9)
• struct iwl_rx_baid_cfg_cmd_modify(9)
• struct iwl_rx_baid_cfg_cmd_remove_v1(9)
• struct iwl_rx_baid_cfg_cmd_remove(9)
• struct iwl_rx_baid_cfg_cmd(9)
• struct iwl_rx_baid_cfg_resp(9)
• enum iwl_scd_queue_cfg_operation(9)
• struct iwl_scd_queue_cfg_cmd(9)
• enum iwl_sec_key_flags(9)
• struct iwl_sec_key_cmd(9)

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aaand that's the page, bestie 💖 huge slay, you read the whole thing. it came from ./drivers/net/wireless/intel/i... and it's dated October 2026 — the page itself is struct iwl_time_msmt_notify(9), periodt. 🎀✨