STRUCT VDUSE_VQ_INFO(9)

💅 struct vduse_vq_info(9) 💅

okay bestie, welcome to the Kernel API Manual — yes that's the manual name, no I will not be shortening it, it's giving official. today's main character is struct vduse_vq_info, and honestly? she's just a lil info card for a virtqueue. lowkey iconic. 🎀

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✨ NAME ✨

struct vduse_vq_info — literally just "information of a virtqueue". that's it. that's the vibe check. 🦋

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🌸 SYNOPSIS 🌸

here's the whole glow-up, character for character, don't touch:

struct vduse_vq_info {
    __u32 index;
    __u32 num;
    __u64 desc_addr;
    __u64 driver_addr;
    __u64 device_addr;
    union {
      struct vduse_vq_state_split split;
      struct vduse_vq_state_packed packed;
    };
    __u8 ready;
 };

she's structured. she's unioned. she's ready (literally, there's a field). 🔥

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🫶 Members 🫶

okay so let's meet the cast, one by one, no skips:

• index — the virtqueue index. her little name tag ✨
• num — the size of virtqueue. how much room she's got, basically 💅
• desc_addr — address of desc area 📍
• driver_addr — address of driver area 📍
• device_addr — address of device area 📍
• {unnamed_union} — it's anonymous. no name. mysterious. main character energy tbh 🙈
• split — split virtqueue state 🧚
• packed — packed virtqueue state 🧚
• ready — ready status of virtqueue. she's ready, she's been ready, periodt 👑

ngl bestie, the three *_addr fields are just three addresses and there is no extra lore in this page about them. don't come for me, I only report what the manpage says. 💀

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💖 Description 💖

so like, what IS she? she's the structure used by the VDUSE_VQ_GET_INFO ioctl to get virtqueue's information. that's the whole gig. get info, slay, leave. 🌈

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⭐ SEE ALSO ⭐

the whole friend group 🫶 — and heads up, the kernel file lives at ./include/uapi/linux/vduse.h:

• 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_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)
• struct vduse_dev_response(9)

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and that's a wrap, bestie 🎀 this page came from ./include/uapi/linux, dated October 2026, and she answers to the name struct vduse_vq_info(9). go get that virtqueue info, you absolute icon 💜✨