util: Introduce flags field for macvtap creation

Currently, there is one flag passed in during macvtap creation
(withTap) -- Let's convert this field to an unsigned int flag
field for future expansion.

Signed-off-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>

src/lxc/lxc_process.c

@@ -331,12 +331,12 @@ char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
             net->ifname, &net->mac,
             virDomainNetGetActualDirectDev(net),
             virDomainNetGetActualDirectMode(net),
-            false, false, def->uuid,
+            false, def->uuid,
             virDomainNetGetActualVirtPortProfile(net),
             &res_ifname,
             VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
             cfg->stateDir,
-            virDomainNetGetActualBandwidth(net)) < 0)
+            virDomainNetGetActualBandwidth(net), 0) < 0)
         goto cleanup;
 
     ret = res_ifname;

src/qemu/qemu_command.c

@@ -177,6 +177,7 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
     char *res_ifname = NULL;
     int vnet_hdr = 0;
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+    unsigned int macvlan_create_flags = VIR_NETDEV_MACVLAN_CREATE_WITH_TAP;
 
     if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VNET_HDR) &&
         net->model && STREQ(net->model, "virtio"))
@@ -186,11 +187,12 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
         net->ifname, &net->mac,
         virDomainNetGetActualDirectDev(net),
         virDomainNetGetActualDirectMode(net),
-        true, vnet_hdr, def->uuid,
+        vnet_hdr, def->uuid,
         virDomainNetGetActualVirtPortProfile(net),
         &res_ifname,
         vmop, cfg->stateDir,
-        virDomainNetGetActualBandwidth(net));
+        virDomainNetGetActualBandwidth(net),
+        macvlan_create_flags);
     if (rc >= 0) {
         virDomainAuditNetDevice(def, net, res_ifname, true);
         VIR_FREE(net->ifname);

src/util/virnetdevmacvlan.c

@@ -796,26 +796,31 @@ virNetDevMacVLanVPortProfileRegisterCallback(const char *ifname,
  * @res_ifname: Pointer to a string pointer where the actual name of the
  *     interface will be stored into if everything succeeded. It is up
  *     to the caller to free the string.
+ * @flags: OR of virNetDevMacVLanCreateFlags.
  *
- * Returns file descriptor of the tap device in case of success with @withTap,
+ * Returns file descriptor of the tap device in case of success with
- * otherwise returns 0; returns -1 on error.
+ * @flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP, otherwise returns 0; returns
+ * -1 on error.
  */
 int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
                                            const virMacAddr *macaddress,
                                            const char *linkdev,
                                            virNetDevMacVLanMode mode,
-                                           bool withTap,
                                            int vnet_hdr,
                                            const unsigned char *vmuuid,
                                            virNetDevVPortProfilePtr virtPortProfile,
                                            char **res_ifname,
                                            virNetDevVPortProfileOp vmOp,
                                            char *stateDir,
-                                           virNetDevBandwidthPtr bandwidth)
+                                           virNetDevBandwidthPtr bandwidth,
+                                           unsigned int flags)
 {
-    const char *type = withTap ? "macvtap" : "macvlan";
+    const char *type = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
-    const char *prefix = withTap ? MACVTAP_NAME_PREFIX : MACVLAN_NAME_PREFIX;
+        "macvtap" : "macvlan";
-    const char *pattern = withTap ? MACVTAP_NAME_PATTERN : MACVLAN_NAME_PATTERN;
+    const char *prefix = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
+        MACVTAP_NAME_PREFIX : MACVLAN_NAME_PREFIX;
+    const char *pattern = (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) ?
+        MACVTAP_NAME_PATTERN : MACVLAN_NAME_PATTERN;
     int c, rc;
     char ifname[IFNAMSIZ];
     int retries, do_retry = 0;
@@ -903,7 +908,7 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
         goto disassociate_exit;
     }
 
-    if (withTap) {
+    if (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP) {
         if ((rc = virNetDevMacVLanTapOpen(cr_ifname, 10)) < 0)
             goto disassociate_exit;
 
@@ -922,7 +927,7 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
     }
 
     if (virNetDevBandwidthSet(cr_ifname, bandwidth, false) < 0) {
-        if (withTap)
+        if (flags & VIR_NETDEV_MACVLAN_CREATE_WITH_TAP)
             VIR_FORCE_CLOSE(rc); /* sets rc to -1 */
         else
             rc = -1;
@@ -1066,15 +1071,16 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *ifname ATTRIBUTE_UNUSED,
                                            const virMacAddr *macaddress ATTRIBUTE_UNUSED,
                                            const char *linkdev ATTRIBUTE_UNUSED,
                                            virNetDevMacVLanMode mode ATTRIBUTE_UNUSED,
-                                           bool withTap ATTRIBUTE_UNUSED,
                                            int vnet_hdr ATTRIBUTE_UNUSED,
                                            const unsigned char *vmuuid ATTRIBUTE_UNUSED,
                                            virNetDevVPortProfilePtr virtPortProfile ATTRIBUTE_UNUSED,
                                            char **res_ifname ATTRIBUTE_UNUSED,
                                            virNetDevVPortProfileOp vmop ATTRIBUTE_UNUSED,
                                            char *stateDir ATTRIBUTE_UNUSED,
-                                           virNetDevBandwidthPtr bandwidth ATTRIBUTE_UNUSED)
+                                           virNetDevBandwidthPtr bandwidth ATTRIBUTE_UNUSED,
+                                           unsigned int flags)
 {
+    virCheckFlags(0, -1);
     virReportSystemError(ENOSYS, "%s",
                          _("Cannot create macvlan devices on this platform"));
     return -1;

src/util/virnetdevmacvlan.h

@@ -40,6 +40,12 @@ typedef enum {
 } virNetDevMacVLanMode;
 VIR_ENUM_DECL(virNetDevMacVLanMode)
 
+typedef enum {
+   VIR_NETDEV_MACVLAN_CREATE_NONE     = 0,
+   /* Create with a tap device */
+   VIR_NETDEV_MACVLAN_CREATE_WITH_TAP = 1 << 0,
+} virNetDevMacVLanCreateFlags;
+
 int virNetDevMacVLanCreate(const char *ifname,
                            const char *type,
                            const virMacAddr *macaddress,
@@ -56,16 +62,16 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *ifname,
                                            const virMacAddr *macaddress,
                                            const char *linkdev,
                                            virNetDevMacVLanMode mode,
-                                           bool withTap,
                                            int vnet_hdr,
                                            const unsigned char *vmuuid,
                                            virNetDevVPortProfilePtr virtPortProfile,
                                            char **res_ifname,
                                            virNetDevVPortProfileOp vmop,
                                            char *stateDir,
-                                           virNetDevBandwidthPtr bandwidth)
+                                           virNetDevBandwidthPtr bandwidth,
-    ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(7)
+                                           unsigned int flags)
-    ATTRIBUTE_NONNULL(9) ATTRIBUTE_NONNULL(11) ATTRIBUTE_RETURN_CHECK;
+    ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(6)
+    ATTRIBUTE_NONNULL(8) ATTRIBUTE_NONNULL(10) ATTRIBUTE_RETURN_CHECK;
 
 int virNetDevMacVLanDeleteWithVPortProfile(const char *ifname,
                                            const virMacAddr *macaddress,