platform: add macvlan link creation support

src/platform/nm-linux-platform.c

@@ -4355,6 +4355,52 @@ nla_put_failure:
 	g_return_val_if_reached (FALSE);
 }
 
+static int
+link_macvlan_add (NMPlatform *platform,
+                  const char *name,
+                  int parent,
+                  NMPlatformLnkMacvlan *props,
+                  NMPlatformLink *out_link)
+{
+	nm_auto_nlmsg struct nl_msg *nlmsg = NULL;
+	struct nlattr *info;
+	struct nlattr *data;
+
+	_LOGD ("adding macvlan '%s' parent %u mode %u",
+	       name,
+	       parent,
+	       props->mode);
+
+	nlmsg = _nl_msg_new_link (RTM_NEWLINK,
+	                          NLM_F_CREATE,
+	                          0,
+	                          name,
+	                          0,
+	                          0);
+	if (!nlmsg)
+		return FALSE;
+
+	NLA_PUT_U32 (nlmsg, IFLA_LINK, parent);
+
+	if (!(info = nla_nest_start (nlmsg, IFLA_LINKINFO)))
+		goto nla_put_failure;
+
+	NLA_PUT_STRING (nlmsg, IFLA_INFO_KIND, "macvlan");
+
+	if (!(data = nla_nest_start (nlmsg, IFLA_INFO_DATA)))
+		goto nla_put_failure;
+
+	NLA_PUT_U32 (nlmsg, IFLA_MACVLAN_MODE, props->mode);
+	NLA_PUT_U16 (nlmsg, IFLA_MACVLAN_FLAGS, props->no_promisc ? MACVLAN_FLAG_NOPROMISC : 0);
+
+	nla_nest_end (nlmsg, data);
+	nla_nest_end (nlmsg, info);
+
+	return do_add_link_with_lookup (platform, NM_LINK_TYPE_MACVLAN, name, nlmsg, out_link);
+nla_put_failure:
+	g_return_val_if_reached (FALSE);
+}
+
 static int
 link_sit_add (NMPlatform *platform,
               const char *name,
@@ -5861,6 +5907,7 @@ nm_linux_platform_class_init (NMLinuxPlatformClass *klass)
 
 	platform_class->link_gre_add = link_gre_add;
 	platform_class->link_ip6tnl_add = link_ip6tnl_add;
+	platform_class->link_macvlan_add = link_macvlan_add;
 	platform_class->link_ipip_add = link_ipip_add;
 	platform_class->link_sit_add = link_sit_add;
 

src/platform/nm-platform.c

@@ -1943,6 +1943,43 @@ nm_platform_link_ipip_add (NMPlatform *self,
 	return NM_PLATFORM_ERROR_SUCCESS;
 }
 
+/**
+ * nm_platform_macvlan_add:
+ * @self: platform instance
+ * @name: name of the new interface
+ * @props: interface properties
+ * @out_link: on success, the link object
+ *
+ * Create a MACVLAN device.
+ */
+NMPlatformError
+nm_platform_link_macvlan_add (NMPlatform *self,
+                              const char *name,
+                              int parent,
+                              NMPlatformLnkMacvlan *props,
+                              NMPlatformLink *out_link)
+{
+	NMPlatformError plerr;
+
+	_CHECK_SELF (self, klass, NM_PLATFORM_ERROR_BUG);
+
+	g_return_val_if_fail (props, NM_PLATFORM_ERROR_BUG);
+	g_return_val_if_fail (name, NM_PLATFORM_ERROR_BUG);
+
+	plerr = _link_add_check_existing (self, name, NM_LINK_TYPE_MACVLAN, out_link);
+	if (plerr != NM_PLATFORM_ERROR_SUCCESS)
+		return plerr;
+
+	_LOGD ("adding macvlan '%s' parent %u mode %u",
+	       name,
+	       parent,
+	       props->mode);
+
+	if (!klass->link_macvlan_add (self, name, parent, props, out_link))
+		return NM_PLATFORM_ERROR_UNSPECIFIED;
+	return NM_PLATFORM_ERROR_SUCCESS;
+}
+
 /**
  * nm_platform_sit_add:
  * @self: platform instance

src/platform/nm-platform.h

@@ -565,6 +565,8 @@ typedef struct {
 	                             NMPlatformLink *out_link);
 	gboolean (*link_ipip_add) (NMPlatform *, const char *name, NMPlatformLnkIpIp *props,
 	                           NMPlatformLink *out_link);
+	gboolean (*link_macvlan_add) (NMPlatform *, const char *name, int parent, NMPlatformLnkMacvlan *props,
+	                              NMPlatformLink *out_link);
 	gboolean (*link_sit_add) (NMPlatform *, const char *name, NMPlatformLnkSit *props,
 	                          NMPlatformLink *out_link);
 
@@ -817,6 +819,8 @@ NMPlatformError nm_platform_link_ip6tnl_add (NMPlatform *self, const char *name,
                                              NMPlatformLink *out_link);
 NMPlatformError nm_platform_link_ipip_add (NMPlatform *self, const char *name, NMPlatformLnkIpIp *props,
                                            NMPlatformLink *out_link);
+NMPlatformError nm_platform_link_macvlan_add (NMPlatform *self, const char *name, int parent, NMPlatformLnkMacvlan *props,
+                                              NMPlatformLink *out_link);
 NMPlatformError nm_platform_link_sit_add (NMPlatform *self, const char *name, NMPlatformLnkSit *props,
                                           NMPlatformLink *out_link);