Features/VirtioVsock: Difference between revisions

Revision as of 12:25, 25 August 2015

virtio-vsock is a host/guest communications device. It allows applications in the guest and host to communicate. This can be used to implement hypervisor services and guest agents (like qemu-guest-agent or SPICE vdagent).

Unlike virtio-serial, virtio-vsock supports the POSIX Sockets API so existing networking applications require minimal modification. The Sockets API allows N:1 connections so multiple clients can connect to a server simultaneously.

The device has an address assigned automatically so no configuration is required inside the guest.

Sockets are created with the AF_VSOCK address family. Both SOCK_STREAM and SOCK_DGRAM socket types are available.

Code

Virtio specification: RFC
Linux kernel: stefanha's linux.git
QEMU: stefanha's qemu.git

Links

KVM Forum 2015 presentation: virtio-vsock: Zero-configuration host/guest communication (pdf)

@@ Line 1: / Line 1: @@
-virtio-vsock is a ''host/guest communications device''.
+virtio-vsock is a ''host/guest communications device''.  It allows applications in the guest and host to communicate.  This can be used to implement hypervisor services and guest agents (like qemu-guest-agent or SPICE vdagent).
-Unlike virtio-serial, virtio-vsock supports the POSIX Sockets API so existing networking applications require minimal modification.   The device has an address assigned automatically so no configuration is required inside the guest.
+Unlike virtio-serial, virtio-vsock supports the POSIX Sockets API so existing networking applications require minimal modification.  The Sockets API allows N:1 connections so multiple clients can connect to a server simultaneously.
+The device has an address assigned automatically so no configuration is required inside the guest.
 Sockets are created with the AF_VSOCK address family.  Both SOCK_STREAM and SOCK_DGRAM socket types are available.