STRUCT QMI_HEADER(9)

💖 struct qmi_header(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for struct qmi_header — the literal wireformat header of QMI messages ✨ like, this is the little header that rides in front of every QMI message on the wire, and honestly? iconic.

🌸 NAME 🌸

struct qmi_header — the wireformat header of QMI messages, no cap 🎀

🦋 SYNOPSIS 🦋

struct qmi_header {
    u8 type;
    __le16 txn_id;
    __le16 msg_id;
    __le16 msg_len;
 };

that's the whole struct, she's small but she's main character energy 💅

✨ Members ✨

• type — the type of message 👑 this is a u8, so just a lil one-byte vibe check.
• txn_id — the transaction id 🎀 it's a __le16, so little-endian, periodt.
• msg_id — the message id 🦋 also a __le16, also little-endian, ikyk.
• msg_len — the length of the message payload that follows the header 💖 __le16 again, keeping it consistent, we love to see it.

👀 SEE ALSO 👀

• the Kernel file ./include/linux/soc/qcom/qmi.h 📁 (this is where she lives, fr fr)
• struct qmi_elem_info(9)
• struct qmi_response_type_v01(9)
• struct qmi_service(9)
• struct qmi_ops(9)
• struct qmi_txn(9)
• struct qmi_msg_handler(9)
• struct qmi_handle(9)

like, the whole qmi friend group honestly 🫶 go read all of them.

and that's the page!! 🌈 this one came from ./include/linux/soc/qcom, dated October 2026, and yes it's still struct qmi_header(9) at the bottom too 💜 mwah, love u, go read your headers 🧚⭐