qdev: add netdev property

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/qdev-properties.c

@@ -279,6 +279,37 @@ PropertyInfo qdev_prop_chr = {
     .print = print_chr,
 };
 
+/* --- netdev device --- */
+
+static int parse_netdev(DeviceState *dev, Property *prop, const char *str)
+{
+    VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
+
+    *ptr = qemu_find_netdev(str);
+    if (*ptr == NULL)
+        return -1;
+    return 0;
+}
+
+static int print_netdev(DeviceState *dev, Property *prop, char *dest, size_t len)
+{
+    VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
+
+    if (*ptr && (*ptr)->name) {
+        return snprintf(dest, len, "%s", (*ptr)->name);
+    } else {
+        return snprintf(dest, len, "<null>");
+    }
+}
+
+PropertyInfo qdev_prop_netdev = {
+    .name  = "netdev",
+    .type  = PROP_TYPE_NETDEV,
+    .size  = sizeof(VLANClientState*),
+    .parse = parse_netdev,
+    .print = print_netdev,
+};
+
 /* --- pointer --- */
 
 static int print_ptr(DeviceState *dev, Property *prop, char *dest, size_t len)
@@ -488,6 +519,11 @@ void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *valu
     qdev_prop_set(dev, name, &value, PROP_TYPE_CHR);
 }
 
+void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value)
+{
+    qdev_prop_set(dev, name, &value, PROP_TYPE_NETDEV);
+}
+
 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
 {
     qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);

hw/qdev.h

@@ -80,6 +80,7 @@ enum PropertyType {
     PROP_TYPE_DRIVE,
     PROP_TYPE_CHR,
     PROP_TYPE_STRING,
+    PROP_TYPE_NETDEV,
     PROP_TYPE_PTR,
 };
 
@@ -231,6 +232,8 @@ extern PropertyInfo qdev_prop_pci_devfn;
     DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
 #define DEFINE_PROP_STRING(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
+#define DEFINE_PROP_NETDEV(_n, _s, _f)             \
+    DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
 #define DEFINE_PROP_DRIVE(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_drive, DriveInfo*)
 #define DEFINE_PROP_MACADDR(_n, _s, _f)         \
@@ -249,6 +252,7 @@ void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
+void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
 void qdev_prop_set_drive(DeviceState *dev, const char *name, DriveInfo *value);
 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
 /* FIXME: Remove opaque pointer properties.  */

net.c

@@ -2363,7 +2363,7 @@ VLANState *qemu_find_vlan(int id, int allocate)
     return vlan;
 }
 
-static VLANClientState *qemu_find_netdev(const char *id)
+VLANClientState *qemu_find_netdev(const char *id)
 {
     VLANClientState *vc;
 

net.h

@@ -47,6 +47,7 @@ struct VLANState {
 };
 
 VLANState *qemu_find_vlan(int id, int allocate);
+VLANClientState *qemu_find_netdev(const char *id);
 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
                                       VLANClientState *peer,
                                       const char *model,