STRUCT VDUSE_DEV_RESPONSE(9)

💖 struct vduse_dev_response(9) 💖

okay bestie, quick vibe check: this is a page from the Kernel API Manual, and it's all about struct vduse_dev_response — literally the response to a control request. yes, the comeback. the reply. the "kk got it" of the vduse world. 🎀

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✨ SYNOPSIS ✨

here's the whole struct, copied exactly, do NOT touch the punctuation, she's perfect:

struct vduse_dev_response {
    __u32 request_id;
  #define VDUSE_REQ_RESULT_OK     0x00;
  #define VDUSE_REQ_RESULT_FAILED 0x01;
    __u32 result;
    __u32 reserved[4];
    union {
      struct vduse_vq_state vq_state;
      __u32 padding[32];
    };
 };

like, look at her. so structured. so union'd. 🌸

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🌈 Members 🌈

• request_id — the corresponding request id, i.e. which request this is replying to. it's giving "re: your email" energy. 💌
• result — the result of the request. the actual verdict. the receipts. don't forget the two defines that live up in the struct: VDUSE_REQ_RESULT_OK (0x00) and VDUSE_REQ_RESULT_FAILED (0x01) 🔥
• reserved — for future use, and it needs to be initialized to zero. no cap, like actually zero it out, bestie, that's not optional. 🙈
• {unnamed_union} — anonymous. she has no name and honestly? main character energy. 👑
• vq_state — virtqueue state (one arm of the union) 🦋
• padding — padding (the other arm) ⭐

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💅 Description 💅

this struct is used by write(2) on /dev/vduse/$NAME. that's it, that's the whole description. write(2) goes brrr into the device node, and this is the shape of what comes back. periodt. 💖

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🫶 SEE ALSO 🫶

the whole /dev/vduse extended universe, fr fr — kernel file ./include/uapi/linux/vduse.h plus:

• struct vduse_dev_config(9)
• struct vduse_iotlb_entry(9)
• struct vduse_config_data(9)
• struct vduse_vq_config(9)
• struct vduse_vq_state_split(9)
• struct vduse_vq_state_packed(9)
• struct vduse_vq_group_asid(9)
• struct vduse_vq_info(9)
• struct vduse_vq_eventfd(9)
• struct vduse_iova_umem(9)
• struct vduse_iova_info(9)
• struct vduse_iotlb_entry_v2(9)
• enum vduse_req_type(9)
• struct vduse_vq_state(9)
• struct vduse_dev_status(9)
• struct vduse_iova_range(9)
• struct vduse_iova_range_v2(9)
• struct vduse_vq_ready(9)
• struct vduse_dev_request(9)

go read them all, i'll wait. iykyk 😭

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💀 sign-off time 💀

this little masterpiece lives in ./include/uapi/linux, stamped October 2026, and it's the struct vduse_dev_response(9) page. obsessed with her, honestly. mwah 🍓✨🧚💜