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, 42 insertions, 0 deletions

diff --git a/linux-user/socket.h b/linux-user/socket.h
new file mode 100644
index 000000000..680a9218a
--- /dev/null
+++ b/linux-user/socket.h
@@ -0,0 +1,42 @@
+#ifndef LINUX_USER_SOCKET_H
+#define LINUX_USER_SOCKET_H
+
+#include "sockbits.h"
+
+#ifndef TARGET_ARCH_HAS_SOCKET_TYPES
+/** sock_type - Socket types - default values
+ *
+ *
+ * @SOCK_STREAM - stream (connection) socket
+ * @SOCK_DGRAM - datagram (conn.less) socket
+ * @SOCK_RAW - raw socket
+ * @SOCK_RDM - reliably-delivered message
+ * @SOCK_SEQPACKET - sequential packet socket
+ * @SOCK_DCCP - Datagram Congestion Control Protocol socket
+ * @SOCK_PACKET - linux specific way of getting packets at the dev level.
+ *                For writing rarp and other similar things on the user
+ *                level.
+ * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
+ * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
+ */
+enum sock_type {
+       TARGET_SOCK_STREAM      = 1,
+       TARGET_SOCK_DGRAM       = 2,
+       TARGET_SOCK_RAW         = 3,
+       TARGET_SOCK_RDM         = 4,
+       TARGET_SOCK_SEQPACKET   = 5,
+       TARGET_SOCK_DCCP        = 6,
+       TARGET_SOCK_PACKET      = 10,
+};
+
+#define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
+#define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
+
+/* Flags for socket, socketpair, accept4 */
+#define TARGET_SOCK_CLOEXEC    TARGET_O_CLOEXEC
+#ifndef TARGET_SOCK_NONBLOCK
+#define TARGET_SOCK_NONBLOCK   TARGET_O_NONBLOCK
+#endif
+#endif /* TARGET_ARCH_HAS_SOCKET_TYPES */
+
+#endif