qmi_send_request(9)

📦 version 7.3.1, in nixpkgs unstable

💌 qmi_send_request — no cap, it's a whole kernel-API-manual moment (section 9, bestie) ✨

okay so real talk: this is a page straight out of the Kernel API Manual, section 9, and it's about one (1) little function that does a very big job. Buckle up 🎀

🌸 NAME 🌸

qmi_send_request — literally just sends a request QMI message. that's the whole vibe. it sends. it's a request. it's QMI. periodt 💅

✨ SYNOPSIS ✨

ssize_t qmi_send_request (struct qmi_handle *qmi , struct sockaddr_qrtr *sq , struct qmi_txn *txn , int msg_id , size_t len , const struct qmi_elem_info *ei , const void *c_struct );

look at all those parameters. seven of them. she's thorough 💖

🫶 ARGUMENTS 🫶

bestie, every single one matters, so pay attention:

  • qmi — the QMI client handle. this is the main character, the one who actually owns the conversation 👑
  • sq — the destination sockaddr. it's where the message is headed, iykyk 📬
  • txn — the transaction object you're using for this message. she keeps track of stuff so you don't have to 💅
  • msg_id — the message id. it's giving "which message is this" energy 🏷️
  • len — the max length of the QMI message. the literal ceiling, fr fr 📏
  • ei — the QMI message description. it's the blueprint, the lore, the whole structure 🌈
  • c_struct — the object to be encoded. this is the actual thing getting packed up and shipped out 📦
ngl, if you mix up len and msg_id, that's on you, not on me 🙈

🔥 RETURN 🔥

  • 0 on success — slay, we love a clean win ✨
  • negative errno on failure — not the vibe, but at least she tells you 😭

🦋 SEE ALSO 🦋

the kernel file lives at ./drivers/soc/qcom/qmi_interface.c, and here's the whole friend group it runs with:

that's SIXTEEN cross-references and every single one is iconic, no skips 💜

and that's the page!! go forth and send your request messages responsibly, bestie 🧚‍♀️

source spot: ./drivers/soc/qcom · dated October 2026 · kernel API manual section 9 🎀 — ok bye, love u, read the docs 💖

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