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-rw-r--r--include/uapi/linux/amt.h62
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diff --git a/include/uapi/linux/amt.h b/include/uapi/linux/amt.h
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+/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
+/*
+ * Copyright (c) 2021 Taehee Yoo <ap420073@gmail.com>
+ */
+#ifndef _AMT_H_
+#define _AMT_H_
+
+enum ifla_amt_mode {
+ /* AMT interface works as Gateway mode.
+ * The Gateway mode encapsulates IGMP/MLD traffic and decapsulates
+ * multicast traffic.
+ */
+ AMT_MODE_GATEWAY = 0,
+ /* AMT interface works as Relay mode.
+ * The Relay mode encapsulates multicast traffic and decapsulates
+ * IGMP/MLD traffic.
+ */
+ AMT_MODE_RELAY,
+ __AMT_MODE_MAX,
+};
+
+#define AMT_MODE_MAX (__AMT_MODE_MAX - 1)
+
+enum {
+ IFLA_AMT_UNSPEC,
+ /* This attribute specify mode etier Gateway or Relay. */
+ IFLA_AMT_MODE,
+ /* This attribute specify Relay port.
+ * AMT interface is created as Gateway mode, this attribute is used
+ * to specify relay(remote) port.
+ * AMT interface is created as Relay mode, this attribute is used
+ * as local port.
+ */
+ IFLA_AMT_RELAY_PORT,
+ /* This attribute specify Gateway port.
+ * AMT interface is created as Gateway mode, this attribute is used
+ * as local port.
+ * AMT interface is created as Relay mode, this attribute is not used.
+ */
+ IFLA_AMT_GATEWAY_PORT,
+ /* This attribute specify physical device */
+ IFLA_AMT_LINK,
+ /* This attribute specify local ip address */
+ IFLA_AMT_LOCAL_IP,
+ /* This attribute specify Relay ip address.
+ * So, this is not used by Relay.
+ */
+ IFLA_AMT_REMOTE_IP,
+ /* This attribute specify Discovery ip address.
+ * When Gateway get started, it send discovery message to find the
+ * Relay's ip address.
+ * So, this is not used by Relay.
+ */
+ IFLA_AMT_DISCOVERY_IP,
+ /* This attribute specify number of maximum tunnel. */
+ IFLA_AMT_MAX_TUNNELS,
+ __IFLA_AMT_MAX,
+};
+
+#define IFLA_AMT_MAX (__IFLA_AMT_MAX - 1)
+
+#endif /* _AMT_H_ */