STRUCT IWL_TT_PARAMS(9)

💅 struct iwl_tt_params — a Kernel API Manual moment (section 9, bestie)

okay so picture this: you're deep in the iwlwifi driver, your chip is literally getting hot 🔥, and the kernel needs to know exactly when to start throttling things before your laptop turns into a pancake griddle. That's this struct, girl. struct iwl_tt_params = the thermal throttling parameters, and it's giving main character energy for your thermals 🌡️✨

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✨ NAME ✨

struct iwl_tt_params — thermal throttling parameters 🎀

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🦋 SYNOPSIS 🦋

struct iwl_tt_params {
    u32 ct_kill_entry;
    u32 ct_kill_exit;
    u32 ct_kill_duration;
    u32 dynamic_smps_entry;
    u32 dynamic_smps_exit;
    u32 tx_protection_entry;
    u32 tx_protection_exit;
    struct iwl_tt_tx_backoff tx_backoff[TT_TX_BACKOFF_SIZE];
    u8 support_ct_kill:1, support_dynamic_smps:1,
support_tx_protection:1, support_tx_backoff:1;
 };

no cap, those last four are bitfields, so they each get one lil u8 bit to live in 🐣

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🌸 Members 🌸

okay bestie, member-by-member, let's go 💅

• ct_kill_entry — the CT Kill entry threshold. that's the temp at which CT Kill kicks in 🔥
• ct_kill_exit — the CT Kill exit threshold. this is your way back out 🚪
• ct_kill_duration — the time intervals (in uSec) during which the driver needs to check whether it should exit CT Kill. yes, uSec, microseconds, she's precise ⏱️
• dynamic_smps_entry — the Dynamic SMPS entry threshold ✨
• dynamic_smps_exit — the Dynamic SMPS exit threshold ✨
• tx_protection_entry — the TX protection entry threshold 📡
• tx_protection_exit — the TX protection exit threshold 📡
• tx_backoff — an array of thresholds for tx-backoff, in ascending order. lowkey important: ascending, so don't be chaotic and shuffle it 🙈
• support_ct_kill — Support CT Kill? 👀
• support_dynamic_smps — Support dynamic SMPS? 👀
• support_tx_protection — Support tx protection? 👀
• support_tx_backoff — Support tx-backoff? 👀

bestie note 🫶: those support_* bits are literally just yes/no flags — the hardware/driver either does the thing or it doesn't, and the struct wants the tea.

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🔍 SEE ALSO 🔍

go look at the kernel file ./drivers/net/wireless/intel/iwlwifi/iwl-config.h, plus these beauties:

• enum iwl_nvm_type(9)
• struct iwl_fw_mon_reg(9)
• struct iwl_fw_mon_regs(9)
• struct iwl_family_base_params(9)
• struct iwl_mac_cfg(9)
• struct iwl_rf_cfg(9)

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aaaand that's the page, icon 👑 source path was ./drivers/net/wireless/intel/i... (yes, it's truncated in the original, that's just how she is 💀) and the date on it is October 2026, so mark your calendar bestie 🗓️💖 periodt ✨