qmi_decode(9)

💅 qmi_decode(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this whole page is about qmi_decode, and yes it lives in the Kernel API Manual — that's the manual name, iykyk. It's the core decode function, the main character of the QMI encdec world. Let's get into it ✨

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🌸 NAME 🌸

qmi_decode — the Core Decode Function. that's literally it, that's the whole vibe. she decodes. she's core. periodt 💅

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🦋 SYNOPSIS 🦋

int qmi_decode (const struct qmi_elem_info *ei_array , void
*out_c_struct , const void *in_buf , u32 in_buf_len , int dec_level );

like, copy that exactly pls, no cap, every character matters 🙈

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✨ ARGUMENTS ✨

• ei_array — the struct info array that describes the structure you're decoding. it's giving "here's the map, now go find the treasure" 🗺️
• out_c_struct — the buffer that holds the decoded C struct. this is where the decoded goods land 💖
• in_buf — the buffer containing the QMI message to be decoded. the raw material, the input, the main character's origin story 🌈
• in_buf_len — length of the QMI message to be decoded. gotta know how much you're working with fr fr 📏
• dec_level — the decode level, which indicates the depth of the nested structure (within the main structure) that's being decoded. yes, it's recursion-coded and we respect it 🧚

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🔥 RETURN 🔥

on success you get the number of bytes of decoded information. on error you get a negative errno. so like, if the number is negative, something went sideways, bestie 😭 — check that return value, don't just vibe past it 💀

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/soc/qcom/qmi_encdec.c, and honestly the whole friend group shows up here:

• skip_to_next_elem(9)
• qmi_calc_min_msg_len(9)
• qmi_encode_basic_elem(9)
• qmi_encode_struct_elem(9)
• qmi_encode_string_elem(9)
• qmi_encode(9)
• qmi_decode_basic_elem(9)
• qmi_decode_struct_elem(9)
• qmi_decode_string_elem(9)
• find_ei(9)
• qmi_encode_message(9)
• qmi_decode_message(9)

the encode girlies AND the decode girlies, all in one list. obsessed 🫶

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ngl the whole friend group ate and left no crumbs — go read the encode ones too, they're the mirror of this whole operation 💅

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and that's the page! brought to you by ./drivers/soc/qcom, stamped October 2026, and signed qmi_decode(9) — mwah, study hard, slay harder 💖✨🎀🦋