[Qemu-devel] [PATCH 6/7] qdev: add qdev_prop_get_{macaddr, net_client}()

[Mark McLoughlin <markmc@redhat.com>]

Probably the second worst idea in the world, ever.

While iterating over all NICs in the system, we need to be
able to query their 'net-client' and 'macaddr' properties.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
---
 hw/qdev-properties.c |   31 ++++++++++++++++++++++++++++---
 hw/qdev.h            |    3 +++
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index fe40813..11ae6ad 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -458,10 +458,10 @@ int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)
     return prop->info->parse(dev, prop, value);
 }
 
-void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)
+static void *qdev_prop_get(DeviceState *dev, const char *name,
+                           enum PropertyType type, Property **prop_ret)
 {
     Property *prop;
-    void *dst;
 
     prop = qdev_prop_find(dev, name);
     if (!prop) {
@@ -474,7 +474,20 @@ void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyT
                 __FUNCTION__, dev->info->name, name);
         abort();
     }
-    dst = qdev_get_prop_ptr(dev, prop);
+
+    if (prop_ret) {
+        *prop_ret = prop;
+    }
+
+    return qdev_get_prop_ptr(dev, prop);
+}
+
+void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)
+{
+    Property *prop;
+    void *dst;
+
+    dst = qdev_prop_get(dev, name, type, &prop);
     memcpy(dst, src, prop->info->size);
 }
 
@@ -518,11 +531,23 @@ void qdev_prop_set_net_client(DeviceState *dev, const char *name, VLANClientStat
     qdev_prop_set(dev, name, &value, PROP_TYPE_NET_CLIENT);
 }
 
+VLANClientState *qdev_prop_get_net_client(DeviceState *dev, const char *name)
+{
+    VLANClientState **clientp = qdev_prop_get(dev, name, PROP_TYPE_NET_CLIENT, NULL);
+    return *clientp;
+}
+
 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
 {
     qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);
 }
 
+uint8_t *qdev_prop_get_macaddr(DeviceState *dev, const char *name)
+{
+    uint8_t *mac = qdev_prop_get(dev, name, PROP_TYPE_MACADDR, NULL);
+    return mac;
+}
+
 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
 {
     qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);
diff --git a/hw/qdev.h b/hw/qdev.h
index 712ae3b..41b2f07 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -267,6 +267,9 @@ void qdev_prop_set_defaults(DeviceState *dev, Property *props);
 void qdev_prop_register_compat(CompatProperty *props);
 void qdev_prop_set_compat(DeviceState *dev);
 
+VLANClientState *qdev_prop_get_net_client(DeviceState *dev, const char *name);
+uint8_t *qdev_prop_get_macaddr(DeviceState *dev, const char *name);
+
 /* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
 extern struct BusInfo system_bus_info;
 
-- 
1.6.2.5