STRUCT IWL_MEI_CACHE(9)

💅 struct iwl_mei_cache(9)

okay bestie, welcome to the Kernel API Manual ✨ — yes, the manual name is literally Kernel API Manual, and today we're reading about struct iwl_mei_cache, which is a whole little struct that lives in the kernel universe and honestly? it's giving organized-notes energy. 🎀

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🌸 NAME 🌸

struct iwl_mei_cache — a cache for the parameters from iwlwifi 🫶

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✨ SYNOPSIS ✨

struct iwl_mei_cache {
    const struct iwl_mei_ops *ops;
    struct net_device *netdev;
    const struct iwl_sap_notif_connection_info *conn_info;
    const __le16 *power_limit;
    u32 rf_kill;
    u16 mcc;
    u8 mac_address[6];
    u8 nvm_address[6];
    enum iwl_mei_sap_version sap_version;
    void *priv;
 };

like… look at her. she's got range. 👑

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🦋 Members 🦋

so here's the cast of characters, no cap:

• ops — Callbacks to iwlwifi. the little phone-a-friend line back home 💖
• netdev — The netdev that will be used to transmit / receive packets. the main character fr fr, she's the one moving the packets around 📨
• conn_info — The connection info message triggered by iwlwifi's association. literally the "we're connected!!" announcement 😭
• power_limit — pointer to an array of 10 elements (le16) represents the power restrictions per chain. ten whole little le16s of power rules, one per chain, periodt ⚡
• rf_kill — rf kill state. is the radio on or is it grounded? 🙈
• mcc — MCC info
• mac_address — interface MAC address. 🎀
• nvm_address — NVM MAC address. 🎀 (yes she has TWO, the interface one and the NVM one, both u8[6], iconic)
• sap_version — The SAP version to use. it's an enum iwl_mei_sap_version. ✨
• priv — A pointer to iwlwifi. the sneaky back-to-where-it-came-from pointer 💅

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💜 Description 💜

This used to cache the configurations coming from iwlwifi's way. 💾

The data is cached here so that we can buffer the configuration even if we don't have a bind from the mei bus and hence, on iwl_mei structure.

lowkey the whole point: no bind from the mei bus? doesn't matter, the config gets buffered here anyway. buffer it and slay 🫶

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/wireless/intel/iwlwifi/mei/main.c
• struct iwl_mei(9) — her sibling, go say hi 💖

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and that's the page!! 🌸 this one came from ./drivers/net/wireless/intel/i... and it's dated October 2026, so like… the future already read it. you're basically early. 💅✨ go forth and cache responsibly, bestie 🎀🦋