STRUCT VIRTIO_SND(9)

✨ NAME ✨

okay bestie, welcome to the struct virtio_snd(9) page from the Kernel API Manual 💖 and it's literally all about the VirtIO sound card device.

struct virtio_snd — VirtIO sound card device. that's the name, that's the vibe, periodt 💅

🌸 SYNOPSIS 🌸

okay so here's the whole struct in all its glory — character for character, no edits, no cap:

       struct virtio_snd {
           struct virtio_device *vdev;
           struct virtio_snd_queue queues[VIRTIO_SND_VQ_MAX];
           struct snd_card *card;
           struct list_head ctl_msgs;
           struct virtio_snd_event *event_msgs;
           struct list_head pcm_list;
           struct virtio_jack *jacks;
           u32 njacks;
           struct virtio_pcm_substream *substreams;
           u32 nsubstreams;
           struct virtio_snd_chmap_info *chmaps;
           u32 nchmaps;
           struct virtio_snd_ctl_info *kctl_infos;
           struct virtio_kctl *kctls;
           u32 nkctls;
        };

💅 Members 💅

these are the little fields inside the struct, and yes every single one is getting its moment, because we don't skip members in this house 🫶

• vdev — Underlying virtio device. literally the device underneath, slay ✨
• queues — Virtqueue wrappers. the wrappers, iconic 🎀
• card — ALSA sound card. your ALSA sound card, main character energy 💖
• ctl_msgs — Pending control request list. the list of pending control requests, no cap 📋
• event_msgs — Device events. device events, periodt 🦋
• pcm_list — VirtIO PCM device list. the VirtIO PCM device list, yup 🌸
• jacks — VirtIO jacks. VirtIO jacks!! 💜
• njacks — Number of jacks. the number of jacks, counting them fr fr 🔢
• substreams — VirtIO PCM substreams. VirtIO PCM substreams, highkey obsessed 🔥
• nsubstreams — Number of PCM substreams. number of PCM substreams, got it bestie 💅
• chmaps — VirtIO channel maps. VirtIO channel maps, map it out 🌈
• nchmaps — Number of channel maps. number of channel maps, yes ⭐
• kctl_infos — VirtIO control element information. VirtIO control element information, info dump but make it cute 💖
• kctls — VirtIO control elements. VirtIO control elements, they're giving control 👑
• nkctls — Number of control elements. number of control elements, final count 🎀

🦋 SEE ALSO 🦋

go peek at these, iykyk:

• Kernel file ./sound/virtio/virtio_card.h — struct virtio_snd_queue(9), struct virtio_kctl(9)

okay that's it bestie!! source ./sound/virtio, date October 2026, and the struct virtio_snd(9) tag — mwah 💋✨