STRUCT IRIS_HFI_HEADER(9)

✨ struct iris_hfi_header(9) ✨

okay bestie, welcome to the Kernel API Manual 🫶 — today's main character is struct iris_hfi_header, and honestly? she's giving header energy. 💅

🌸 NAME 🌸

struct iris_hfi_header — literally a struct, and that's the whole name section, no cap 😭 (the original leaves it empty too, iykyk)

🦋 SYNOPSIS 🦋

struct iris_hfi_header {
    u32 size;
    u32 session_id;
    u32 header_id;
    u32 reserved[4];
    u32 num_packets;
 };

look at her. pristine. iconic. 🎀

👑 Members 👑

• size — the size of the total packet in bytes, and yes that includes the hfi_header itself 💖 don't forget her, she counts.
• session_id — bestie, this one's a vibe check 👀 for a session level hfi_header, session_id is non-zero. for a system level hfi_header, session_id is zero. that's the whole tell, periodt.
• header_id — a unique header id for each hfi_header ✨ every single one gets her own little name tag, slay.
• reserved — reserved for future use 🙈 aka the "we'll deal with it later" corner. hands off for now!
• num_packets — how many hfi_packets are included with the hfi_header 📦 like, how many friends she brought to the function.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/media/platform/qcom/iris/iris_hfi_gen2_packet.h 🦋
• struct iris_hfi_packet(9)
• struct iris_hfi_buffer(9)

ngl, go read those next, they're lowkey the whole friend group 💜

okay that's the page!! fr fr you now understand struct iris_hfi_header better than most people 😭💀 this cutie came out of ./drivers/media/platform/qcom/... and the date on her birth certificate says October 2026 — mark your calendars bestie 🎀✨🌸💖🫶