virtsnd_ctl_msg_send(9)

💅 virtsnd_ctl_msg_send(9) — Kernel API Manual ✨

💖 NAME 💖

virtsnd_ctl_msg_send — send a control message. That’s the whole assignment, bestie: control message goes send. Slay.

🎀 SYNOPSIS 🎀

int virtsnd_ctl_msg_send (struct virtio_snd *snd , struct virtio_snd_msg
*msg , struct scatterlist *out_sgs , struct scatterlist *in_sgs , bool
nowait );

🌸 ARGUMENTS 🌸

• snd — VirtIO sound device. Like, the device you’re doing the thing with.
• msg — Control message. The message itself, no cap.
• out_sgs — Additional sg-list to attach to the request header (may be NULL). Yes, NULL is allowed here.
• in_sgs — Additional sg-list to attach to the response header (may be NULL). Also allowed to be NULL, periodt.
• nowait — Flag indicating whether to wait for completion. That’s the whole vibe of this flag.

🦋 CONTEXT 🦋

Any context — literally any. It takes and releases the control queue spinlock. It may sleep if nowait is false, so that’s the sleepy lil detail to keep in your brain 🧠✨.

🔥 RETURN 🔥

0 on success, -errno on failure. Clean and simple, iykyk.

👑 SEE ALSO 👑

• Kernel file ./sound/virtio/virtio_ctl_msg.c
• struct virtio_snd_msg(9)
• virtsnd_ctl_msg_ref(9)
• virtsnd_ctl_msg_unref(9)
• virtsnd_ctl_msg_request(9)
• virtsnd_ctl_msg_response(9)
• virtsnd_ctl_msg_alloc(9)
• virtsnd_ctl_msg_complete(9)
• virtsnd_ctl_msg_cancel_all(9)
• virtsnd_ctl_query_info(9)
• virtsnd_ctl_notify_cb(9)

mwah 💋 and that’s the page, bestie! Source/version: ./sound/virtio; date: October 2026; page name: virtsnd_ctl_msg_send(9). Obsessed 🫶💖