[PATCH v4 05/16] tools: Add vmware_port support

[Don Slutz <dslutz@verizon.com>]

This new libxl_domain_create_info field is used to set
XEN_DOMCTL_CDF_vmware_port for the xc_domain_create() routine.

In xen it is is_vmware_port_enabled.

If is_vmware_port_enabled then
  enable a limited support of VMware's hyper-call.

VMware's hyper-call is also known as VMware Backdoor I/O Port.

Signed-off-by: Don Slutz <dslutz@verizon.com>
---
 docs/man/xl.cfg.pod.5       | 7 +++++++
 tools/libxl/libxl.h         | 5 +++++
 tools/libxl/libxl_create.c  | 2 ++
 tools/libxl/libxl_types.idl | 1 +
 tools/libxl/xl_cmdimpl.c    | 1 +
 5 files changed, 16 insertions(+)

diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5
index 367b401..ab645d8 100644
--- a/docs/man/xl.cfg.pod.5
+++ b/docs/man/xl.cfg.pod.5
@@ -1164,6 +1164,13 @@ For vssd:VirtualSystemType == vmx-07, vmware_hw = 7.
 
 =back
 
+=item B<vmware_port=BOOLEAN>
+
+Turns on or off the exposure of VMware port.  This is known as
+vmport in QEMU.  Also called VMware Backdoor I/O Port.  Not all
+defined VMware backdoor commands are implemented.  All of the
+ones that Linux kernel uses are defined.
+
 =back
 
 =head3 Emulated VGA Graphics Device
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 067af5b..61b7968 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -148,6 +148,11 @@
 #define LIBXL_HAVE_BUILDINFO_HVM_VMWARE_HW 1
 
 /*
+ * libxl_domain_create_info has the vmware_port field.
+ */
+#define LIBXL_HAVE_CREATEINFO_VMWARE_PORT 1
+
+/*
  * libxl ABI compatibility
  *
  * The only guarantee which libxl makes regarding ABI compatibility
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index d9b60af..8cb510f 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -38,6 +38,7 @@ int libxl__domain_create_info_setdefault(libxl__gc *gc,
         libxl_defbool_setdefault(&c_info->hap, libxl_defbool_val(c_info->pvh));
     }
 
+    libxl_defbool_setdefault(&c_info->vmware_port, false);
     libxl_defbool_setdefault(&c_info->run_hotplug_scripts, true);
     libxl_defbool_setdefault(&c_info->driver_domain, false);
 
@@ -501,6 +502,7 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_create_info *info,
         flags |= XEN_DOMCTL_CDF_hvm_guest;
         flags |= libxl_defbool_val(info->hap) ? XEN_DOMCTL_CDF_hap : 0;
         flags |= libxl_defbool_val(info->oos) ? 0 : XEN_DOMCTL_CDF_oos_off;
+        flags |= libxl_defbool_val(info->vmware_port)? XEN_DOMCTL_CDF_vmware_port : 0;
     } else if (libxl_defbool_val(info->pvh)) {
         flags |= XEN_DOMCTL_CDF_pvh_guest;
         if (!libxl_defbool_val(info->hap)) {
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 907572c..608b64d 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -294,6 +294,7 @@ libxl_domain_create_info = Struct("domain_create_info",[
     ("type",         libxl_domain_type),
     ("hap",          libxl_defbool),
     ("oos",          libxl_defbool),
+    ("vmware_port",  libxl_defbool),
     ("ssidref",      uint32),
     ("ssid_label",   string),
     ("name",         string),
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index db86382..549d3db 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -866,6 +866,7 @@ static void parse_config_data(const char *config_source,
     }
 
     xlu_cfg_get_defbool(config, "oos", &c_info->oos, 0);
+    xlu_cfg_get_defbool(config, "vmware_port", &c_info->vmware_port, 0);
 
     if (!xlu_cfg_get_string (config, "pool", &buf, 0))
         xlu_cfg_replace_string(config, "pool", &c_info->pool_name, 0);
-- 
1.8.4