STRUCT IOSM_FLASH_DATA(9)

✨ struct iosm_flash_data(9) ✨

okay bestie, so this is a page from the Kernel API Manual and it's literally all about struct iosm_flash_data — the header data that gets sent to the modem 🫶 don't worry, it's way less scary than it sounds.

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🌸 NAME 🌸

struct iosm_flash_data — Header Data to be sent to modem 💌

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🦋 SYNOPSIS 🦋

here's the whole struct, exactly as it lives, no cap:

struct iosm_flash_data {
    __le16 checksum;
    __le16 pack_id;
    __le32 msg_length;
 };

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🎀 Members 🎀

• checksum — the checksum value, calculated for the payload data 🔥 (yes, it's doing the math so your data stays honest)
• pack_id — the Flash Action type 💅 the vibe check for what kind of flash thing we're doing
• msg_length — the payload length, aka how much stuff we're actually sending 📏

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⭐ SEE ALSO ⭐

Kernel file ./drivers/net/wwan/iosm/iosm_ipc_flash.h enum 👑 and all these glorious neighbors:

• iosm_flash_package_type(9)
• enum iosm_out_of_session_action(9)
• enum iosm_out_of_session_type(9)
• enum iosm_ebl_caps(9)
• enum iosm_ebl_rsp(9)
• enum iosm_mdm_send_recv_data(9)
• struct iosm_ebl_one_error(9)
• struct iosm_ebl_error(9)
• struct iosm_swid_table(9)
• struct iosm_flash_msg_control(9)

like, the whole friend group fr fr 🌈

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💜 little sign-off moment: this iconic piece of documentation lives at ./drivers/net/wwan/iosm in the kernel tree, it's dated October 2026, and you can find it hanging out under struct iosm_flash_data(9). slay, go read the source bestie 💅✨