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, 61 insertions, 0 deletions

diff --git a/contrib/rdmacm-mux/rdmacm-mux.h b/contrib/rdmacm-mux/rdmacm-mux.h
new file mode 100644
index 000000000..07a472291
--- /dev/null
+++ b/contrib/rdmacm-mux/rdmacm-mux.h
@@ -0,0 +1,61 @@
+/*
+ * QEMU paravirtual RDMA - rdmacm-mux declarations
+ *
+ * Copyright (C) 2018 Oracle
+ * Copyright (C) 2018 Red Hat Inc
+ *
+ * Authors:
+ *     Yuval Shaia <yuval.shaia@oracle.com>
+ *     Marcel Apfelbaum <marcel@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef RDMACM_MUX_H
+#define RDMACM_MUX_H
+
+#include "linux/if.h"
+#include <infiniband/verbs.h>
+#include <infiniband/umad.h>
+#include <rdma/rdma_user_cm.h>
+
+typedef enum RdmaCmMuxMsgType {
+    RDMACM_MUX_MSG_TYPE_REQ   = 0,
+    RDMACM_MUX_MSG_TYPE_RESP  = 1,
+} RdmaCmMuxMsgType;
+
+typedef enum RdmaCmMuxOpCode {
+    RDMACM_MUX_OP_CODE_REG   = 0,
+    RDMACM_MUX_OP_CODE_UNREG = 1,
+    RDMACM_MUX_OP_CODE_MAD   = 2,
+} RdmaCmMuxOpCode;
+
+typedef enum RdmaCmMuxErrCode {
+    RDMACM_MUX_ERR_CODE_OK        = 0,
+    RDMACM_MUX_ERR_CODE_EINVAL    = 1,
+    RDMACM_MUX_ERR_CODE_EEXIST    = 2,
+    RDMACM_MUX_ERR_CODE_EACCES    = 3,
+    RDMACM_MUX_ERR_CODE_ENOTFOUND = 4,
+} RdmaCmMuxErrCode;
+
+typedef struct RdmaCmMuxHdr {
+    RdmaCmMuxMsgType msg_type;
+    RdmaCmMuxOpCode op_code;
+    union ibv_gid sgid;
+    RdmaCmMuxErrCode err_code;
+} RdmaCmUHdr;
+
+typedef struct RdmaCmUMad {
+    struct ib_user_mad hdr;
+    char mad[RDMA_MAX_PRIVATE_DATA];
+} RdmaCmUMad;
+
+typedef struct RdmaCmMuxMsg {
+    RdmaCmUHdr hdr;
+    int umad_len;
+    RdmaCmUMad umad;
+} RdmaCmMuxMsg;
+
+#endif