Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 202 insertions, 0 deletions

diff --git a/qapi/sockets.json b/qapi/sockets.json
new file mode 100644
index 000000000..5773d9fcc
--- /dev/null
+++ b/qapi/sockets.json
@@ -0,0 +1,202 @@
+# -*- Mode: Python -*-
+# vim: filetype=python
+
+##
+# = Socket data types
+##
+
+{ 'include': 'common.json' }
+
+##
+# @NetworkAddressFamily:
+#
+# The network address family
+#
+# @ipv4: IPV4 family
+#
+# @ipv6: IPV6 family
+#
+# @unix: unix socket
+#
+# @vsock: vsock family (since 2.8)
+#
+# @unknown: otherwise
+#
+# Since: 2.1
+##
+{ 'enum': 'NetworkAddressFamily',
+  'data': [ 'ipv4', 'ipv6', 'unix', 'vsock', 'unknown' ] }
+
+##
+# @InetSocketAddressBase:
+#
+# @host: host part of the address
+# @port: port part of the address
+##
+{ 'struct': 'InetSocketAddressBase',
+  'data': {
+    'host': 'str',
+    'port': 'str' } }
+
+##
+# @InetSocketAddress:
+#
+# Captures a socket address or address range in the Internet namespace.
+#
+# @numeric: true if the host/port are guaranteed to be numeric,
+#           false if name resolution should be attempted. Defaults to false.
+#           (Since 2.9)
+#
+# @to: If present, this is range of possible addresses, with port
+#      between @port and @to.
+#
+# @ipv4: whether to accept IPv4 addresses, default try both IPv4 and IPv6
+#
+# @ipv6: whether to accept IPv6 addresses, default try both IPv4 and IPv6
+#
+# @keep-alive: enable keep-alive when connecting to this socket. Not supported
+#              for passive sockets. (Since 4.2)
+#
+# @mptcp: enable multi-path TCP. (Since 6.1)
+#
+# Since: 1.3
+##
+{ 'struct': 'InetSocketAddress',
+  'base': 'InetSocketAddressBase',
+  'data': {
+    '*numeric':  'bool',
+    '*to': 'uint16',
+    '*ipv4': 'bool',
+    '*ipv6': 'bool',
+    '*keep-alive': 'bool',
+    '*mptcp': { 'type': 'bool', 'if': 'HAVE_IPPROTO_MPTCP' } } }
+
+##
+# @UnixSocketAddress:
+#
+# Captures a socket address in the local ("Unix socket") namespace.
+#
+# @path: filesystem path to use
+# @abstract: if true, this is a Linux abstract socket address.  @path
+#            will be prefixed by a null byte, and optionally padded
+#            with null bytes.  Defaults to false.  (Since 5.1)
+# @tight: if false, pad an abstract socket address with enough null
+#         bytes to make it fill struct sockaddr_un member sun_path.
+#         Defaults to true.  (Since 5.1)
+#
+# Since: 1.3
+##
+{ 'struct': 'UnixSocketAddress',
+  'data': {
+    'path': 'str',
+    '*abstract': { 'type': 'bool', 'if': 'CONFIG_LINUX' },
+    '*tight': { 'type': 'bool', 'if': 'CONFIG_LINUX' } } }
+
+##
+# @VsockSocketAddress:
+#
+# Captures a socket address in the vsock namespace.
+#
+# @cid: unique host identifier
+# @port: port
+#
+# Note: string types are used to allow for possible future hostname or
+#       service resolution support.
+#
+# Since: 2.8
+##
+{ 'struct': 'VsockSocketAddress',
+  'data': {
+    'cid': 'str',
+    'port': 'str' } }
+
+##
+# @InetSocketAddressWrapper:
+#
+# Since: 1.3
+##
+{ 'struct': 'InetSocketAddressWrapper',
+  'data': { 'data': 'InetSocketAddress' } }
+
+##
+# @UnixSocketAddressWrapper:
+#
+# Since: 1.3
+##
+{ 'struct': 'UnixSocketAddressWrapper',
+  'data': { 'data': 'UnixSocketAddress' } }
+
+##
+# @VsockSocketAddressWrapper:
+#
+# Since: 2.8
+##
+{ 'struct': 'VsockSocketAddressWrapper',
+  'data': { 'data': 'VsockSocketAddress' } }
+
+##
+# @StringWrapper:
+#
+# Since: 1.3
+##
+{ 'struct': 'StringWrapper',
+  'data': { 'data': 'String' } }
+
+##
+# @SocketAddressLegacy:
+#
+# Captures the address of a socket, which could also be a named file descriptor
+#
+# Note: This type is deprecated in favor of SocketAddress.  The
+#       difference between SocketAddressLegacy and SocketAddress is that the
+#       latter is has fewer {} on the wire.
+#
+# Since: 1.3
+##
+{ 'union': 'SocketAddressLegacy',
+  'base': { 'type': 'SocketAddressType' },
+  'discriminator': 'type',
+  'data': {
+    'inet': 'InetSocketAddressWrapper',
+    'unix': 'UnixSocketAddressWrapper',
+    'vsock': 'VsockSocketAddressWrapper',
+    'fd': 'StringWrapper' } }
+
+##
+# @SocketAddressType:
+#
+# Available SocketAddress types
+#
+# @inet:  Internet address
+#
+# @unix:  Unix domain socket
+#
+# @vsock: VMCI address
+#
+# @fd: decimal is for file descriptor number, otherwise a file descriptor name.
+#      Named file descriptors are permitted in monitor commands, in combination
+#      with the 'getfd' command. Decimal file descriptors are permitted at
+#      startup or other contexts where no monitor context is active.
+#
+# Since: 2.9
+##
+{ 'enum': 'SocketAddressType',
+  'data': [ 'inet', 'unix', 'vsock', 'fd' ] }
+
+##
+# @SocketAddress:
+#
+# Captures the address of a socket, which could also be a named file
+# descriptor
+#
+# @type:       Transport type
+#
+# Since: 2.9
+##
+{ 'union': 'SocketAddress',
+  'base': { 'type': 'SocketAddressType' },
+  'discriminator': 'type',
+  'data': { 'inet': 'InetSocketAddress',
+            'unix': 'UnixSocketAddress',
+            'vsock': 'VsockSocketAddress',
+            'fd': 'String' } }