virtqueue_get_vring_size(9)

✨ virtqueue_get_vring_size(9) ✨

okay so bestie, welcome to the Kernel API Manual, section 9 obviously, and today we're doing virtqueue_get_vring_size 💅 it's short, it's sweet, it's iconic.

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🌸 NAME 🌸

virtqueue_get_vring_size — literally just returns the size of the virtqueue's vring 🎀

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🦋 SYNOPSIS 🦋

unsigned int virtqueue_get_vring_size (const struct virtqueue *_vq );

no cap, that's the whole signature. she's simple and she knows it ✨

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💖 ARGUMENTS 💖

• _vq — the struct virtqueue that's holding the vring you care about 🫶 like, hand her the virtqueue, she'll find the vring, that's the vibe.

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🔥 DESCRIPTION 🔥

she returns the size of the vring. that's it. that's the function. 👑

and the why, iykyk: this one's mainly used for boasting to userspace 😭 like genuinely that's what the docs say, it's for flexing. main character energy fr.

also super important: unlike basically every other operation out there, this one need not be serialized 🌈 so no locking drama, no "wait your turn" — she's chill like that. no cap.

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⭐ SEE ALSO ⭐

kernel file ./drivers/virtio/virtio_ring.c, plus the whole friend group 💜:

• virtqueue_add_sgs(9)
• virtqueue_add_outbuf(9)
• virtqueue_add_outbuf_premapped(9)
• virtqueue_add_inbuf(9)
• virtqueue_add_inbuf_cache_clean(9)
• virtqueue_add_inbuf_ctx(9)
• virtqueue_add_inbuf_premapped(9)
• virtqueue_dma_dev(9)
• virtqueue_kick_prepare(9)
• virtqueue_notify(9)
• virtqueue_kick(9)
• virtqueue_get_buf_ctx(9)
• virtqueue_disable_cb(9)
• virtqueue_enable_cb_prepare(9)
• virtqueue_poll(9)
• virtqueue_enable_cb(9)
• virtqueue_enable_cb_delayed(9)
• virtqueue_detach_unused_buf(9)
• vring_interrupt(9)
• virtqueue_resize(9)
• virtqueue_reset(9)
• virtqueue_map_alloc_coherent(9)
• virtqueue_map_free_coherent(9)
• virtqueue_map_page_attrs(9)
• virtqueue_unmap_page_attrs(9)
• virtqueue_map_single_attrs(9)
• virtqueue_unmap_single_attrs(9)
• virtqueue_map_mapping_error(9)
• virtqueue_map_need_sync(9)
• virtqueue_map_sync_single_range_for_cpu(9)
• virtqueue_map_sync_single_range_for_device(9)

like, the whole squad is there. go say hi 🧚

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and that's the page, bestie 🍓 this little cutie lives in ./drivers/virtio and the doc dates from October 2026 — virtqueue_get_vring_size(9), slay, bye 💖✨