+/* Hey Emacs use -*- mode: C -*- */
/*
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* limitations under the License.
*/
-option version = "1.0.0";
+/**
+ * The IPIP module implements IP{v4,v6} over IP{v4,v6} tunnelling as
+ * described in RFC2473 and to some extent the largely historical
+ * RFC1853. The module also supports an IPv4 over IPv6 automatic
+ * tunnelling mechanism called 6RD (RFC5969).
+ *
+ * The IPIP API module supports a CRD model for adding, deleting and
+ * listing tunnels. A tunnel is represented as an interface in
+ * VPP. The "handle" representing a tunnel is the sw_if_index. As any
+ * interface, the user must configure an IPv4 and/or IPv6 address on
+ * the interface. This is the inner or payload protocol.
+ *
+ * Tunnel MTU: The tunnel MTU (the payload MTU) is configurable per
+ * protocol. If a tunnel MTU is larger than the path MTU, the outer
+ * packet will be fragmented. Fragmentation support is configurable,
+ * as it can have severe performance issues, and might be used as an
+ * attack vector (the remote side must reassemble.)
+ *
+ * Traffic class / TOS field can either be configured to a fixed
+ * value, or can be copied from the inner to the outer header.
+ * (For now we have stolen ~0 to indicate copy).
+ *
+ * Note:
+ *
+ * - The Tunnel encapsulation limit described in RFC2473 is not
+ * implemented.
+ *
+ * - ICMP proxying, as in a tunnel head-end receiving ICMP erors on
+ * the outer packet is currently not relayed to the original source
+ * of the packet.
+ *
+ * - PMTUD / MTU probing and tunnel keepalives are not yet implemented.
+ *
+ */
-/** \brief Create or delete an IPIP tunnel
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param is_ipv6 - Use 0 for IPv4, 1 for IPv6
- @param instance - optional unique custom device instance, else ~0.
- @param src_address - Source IP address
- @param dst_address - Destination IP address, can be multicast
- @param fib_index - Encap FIB table ID
-*/
+option version = "2.0.1";
+
+import "vnet/interface_types.api";
+import "vnet/ip/ip_types.api";
+import "vnet/tunnel/tunnel_types.api";
+
+/**
+ * An IP{v4,v6} over IP{v4,v6} tunnel.
+ */
+typedef ipip_tunnel
+{
+ u32 instance; /* If non-~0, specifies a custom dev instance */
+ vl_api_address_t src;
+ vl_api_address_t dst;
+ vl_api_interface_index_t sw_if_index; /* ignored on create, set in
+ details/dump */
+ u32 table_id;
+ vl_api_tunnel_encap_decap_flags_t flags;
+ vl_api_tunnel_mode_t mode;
+ vl_api_ip_dscp_t dscp; /* DSCP value for the tunnel encap,
+ ignored if ECNAP_COPY_DSCP flag is set */
+};
+
+/**
+ * Create an IP{v4,v6} over IP{v4,v6} tunnel.
+ */
define ipip_add_tunnel
{
u32 client_index;
u32 context;
- u8 is_ipv6;
- u32 instance; /* If non-~0, specifies a custom dev instance */
- u8 src_address[16];
- u8 dst_address[16];
- u32 fib_index;
+ vl_api_ipip_tunnel_t tunnel;
};
define ipip_add_tunnel_reply
{
u32 context;
i32 retval;
- u32 sw_if_index;
+ vl_api_interface_index_t sw_if_index;
};
+/**
+ * Delete an IP{v4,v6} over IP{v4,v6} tunnel.
+ */
autoreply define ipip_del_tunnel
{
u32 client_index;
u32 context;
- u32 sw_if_index;
+ vl_api_interface_index_t sw_if_index;
};
+/**
+ * Create an IPv4 over IPv6 automatic tunnel (6RD)
+ */
define ipip_6rd_add_tunnel
{
u32 client_index;
u32 context;
- u32 fib_index;
- u8 ip6_prefix[16];
- u8 ip4_prefix[4];
- u8 ip4_src[4];
- u8 ip6_prefix_len;
- u8 ip4_prefix_len;
- u8 security_check;
+ u32 ip6_table_id;
+ u32 ip4_table_id;
+ vl_api_ip6_prefix_t ip6_prefix;
+ vl_api_ip4_prefix_t ip4_prefix;
+ vl_api_ip4_address_t ip4_src;
+ bool security_check;
+ u8 tc_tos; /* If ~0, the TOS/TC value is copied from
+ inner packet, otherwise set to value */
};
define ipip_6rd_add_tunnel_reply
{
u32 context;
i32 retval;
- u32 sw_if_index;
+ vl_api_interface_index_t sw_if_index;
};
+/**
+ * Delete an IPv4 over IPv6 automatic tunnel (6RD)
+ */
autoreply define ipip_6rd_del_tunnel
{
u32 client_index;
u32 context;
- u32 sw_if_index;
+ vl_api_interface_index_t sw_if_index;
};
+/**
+ * List all IPIP tunnels
+ */
define ipip_tunnel_dump
{
u32 client_index;
u32 context;
- u32 sw_if_index;
+ vl_api_interface_index_t sw_if_index;
};
define ipip_tunnel_details
{
u32 context;
- u32 sw_if_index;
- u32 instance;
- u8 is_ipv6;
- u8 src_address[16];
- u8 dst_address[16];
- u32 fib_index;
+ vl_api_ipip_tunnel_t tunnel;
};
-
-/*
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */