STRUCT TEE_RING_CMD(9)

💖 struct tee_ring_cmd(9) 💖

okay bestie, so this is from the Kernel API Manual and it's literally the glow-up guide to struct tee_ring_cmd — the structure of the command buffer in the TEE ring. yes that's a lot of acronyms, no we're not scared of them, sit with me 🫶

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✨ SYNOPSIS ✨

here's the whole thing, verbatim, do not touch, she's perfect:

struct tee_ring_cmd {
    u32 cmd_id;
    u32 cmd_state;
    u32 status;
    u32 res0[1];
    u64 pdata;
    u32 res1[2];
    u8 buf[MAX_BUFFER_SIZE];
    u32 flag;
 };

that's the layout. every field, in order, exactly like that. periodt 💅

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🎀 Members 🎀

okay now the fun part, member by member, main character energy only:

• cmd_id — this cutie refers to enum tee_cmd_id, and she's the command id for the ring buffer interface ✨
• cmd_state — refers to enum tee_cmd_state. that's the whole job description, iykyk
• status — the status of TEE command execution. so like, how did it go? did it slay or did it flop 🫶
• res0 — reserved region. gorgeous, mysterious, reserved, we respect her privacy 💅
• pdata — private data. and the tea is, it's currently unused 🙈 lowkey just sitting there
• res1 — reserved region. again. reserved girlies stay reserved 🌸
• buf — the TEE command specific buffer. this is where the actual TEE-specific content lives, iconic
• flag — refers to enum cmd_resp_state. flags are flags, she's telling you something 🎀

ngl the reserved fields are literally reserved, so don't go writing your little experiments into res0 or res1. that's not the vibe. 💀

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🌈 SEE ALSO 🌈

go read these next, bestie, they're all in the kernel file ./drivers/crypto/ccp/tee-dev.h:

• struct tee_init_ring_cmd(9)
• struct ring_buf_manager(9)
• enum tee_cmd_state(9)
• enum cmd_resp_state(9)

fr fr, they're all connected, it's giving a whole universe 🦋

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and that's a wrap!! 🎀 this page lives in ./drivers/crypto/ccp and it's dated October 2026 — so when you see her in the wild you'll know exactly who she is. bye bestie, go read the headers, ily, mwah 💜✨