1 files changed, 139 insertions, 0 deletions
diff --git a/src/network/netdev/tunnel.h b/src/network/netdev/tunnel.h
new file mode 100644
index 0000000..713f2fb
--- /dev/null
+++ b/src/network/netdev/tunnel.h
@@ -0,0 +1,139 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "in-addr-util.h"
+
+#include "conf-parser.h"
+#include "fou-tunnel.h"
+#include "netdev-util.h"
+#include "netdev.h"
+#include "networkd-link.h"
+
+typedef enum Ip6TnlMode {
+        NETDEV_IP6_TNL_MODE_IP6IP6,
+        NETDEV_IP6_TNL_MODE_IPIP6,
+        NETDEV_IP6_TNL_MODE_ANYIP6,
+        _NETDEV_IP6_TNL_MODE_MAX,
+        _NETDEV_IP6_TNL_MODE_INVALID = -EINVAL,
+} Ip6TnlMode;
+
+typedef enum IPv6FlowLabel {
+        NETDEV_IPV6_FLOWLABEL_INHERIT = 0xFFFFF + 1,
+        _NETDEV_IPV6_FLOWLABEL_MAX,
+        _NETDEV_IPV6_FLOWLABEL_INVALID = -EINVAL,
+} IPv6FlowLabel;
+
+typedef struct Tunnel {
+        NetDev meta;
+
+        uint8_t encap_limit;
+
+        int family;
+        int ipv6_flowlabel;
+        int allow_localremote;
+        int gre_erspan_sequence;
+        int isatap;
+
+        unsigned ttl;
+        unsigned tos;
+        unsigned flags;
+
+        uint32_t key;
+        uint32_t ikey;
+        uint32_t okey;
+
+        uint8_t erspan_version;
+        uint32_t erspan_index;    /* version 1 */
+        uint8_t erspan_direction; /* version 2 */
+        uint16_t erspan_hwid;     /* version 2 */
+
+        NetDevLocalAddressType local_type;
+        union in_addr_union local;
+        union in_addr_union remote;
+
+        Ip6TnlMode ip6tnl_mode;
+        FooOverUDPEncapType fou_encap_type;
+
+        int pmtudisc;
+        bool ignore_df;
+        bool copy_dscp;
+        bool independent;
+        bool fou_tunnel;
+        bool assign_to_loopback;
+        bool external; /* a.k.a collect metadata mode */
+
+        uint16_t encap_src_port;
+        uint16_t fou_destination_port;
+
+        struct in6_addr sixrd_prefix;
+        uint8_t sixrd_prefixlen;
+} Tunnel;
+
+int dhcp4_pd_create_6rd_tunnel_name(Link *link, char **ret);
+int dhcp4_pd_create_6rd_tunnel(Link *link, link_netlink_message_handler_t callback);
+
+DEFINE_NETDEV_CAST(IPIP, Tunnel);
+DEFINE_NETDEV_CAST(GRE, Tunnel);
+DEFINE_NETDEV_CAST(GRETAP, Tunnel);
+DEFINE_NETDEV_CAST(IP6GRE, Tunnel);
+DEFINE_NETDEV_CAST(IP6GRETAP, Tunnel);
+DEFINE_NETDEV_CAST(SIT, Tunnel);
+DEFINE_NETDEV_CAST(VTI, Tunnel);
+DEFINE_NETDEV_CAST(VTI6, Tunnel);
+DEFINE_NETDEV_CAST(IP6TNL, Tunnel);
+DEFINE_NETDEV_CAST(ERSPAN, Tunnel);
+
+static inline Tunnel* TUNNEL(NetDev *netdev) {
+        assert(netdev);
+
+        switch (netdev->kind) {
+        case NETDEV_KIND_IPIP:
+                return IPIP(netdev);
+        case NETDEV_KIND_SIT:
+                return SIT(netdev);
+        case NETDEV_KIND_GRE:
+                return GRE(netdev);
+        case NETDEV_KIND_GRETAP:
+                return GRETAP(netdev);
+        case NETDEV_KIND_IP6GRE:
+                return IP6GRE(netdev);
+        case NETDEV_KIND_IP6GRETAP:
+                return IP6GRETAP(netdev);
+        case NETDEV_KIND_VTI:
+                return VTI(netdev);
+        case NETDEV_KIND_VTI6:
+                return VTI6(netdev);
+        case NETDEV_KIND_IP6TNL:
+                return IP6TNL(netdev);
+        case NETDEV_KIND_ERSPAN:
+                return ERSPAN(netdev);
+        default:
+                return NULL;
+        }
+}
+
+extern const NetDevVTable ipip_vtable;
+extern const NetDevVTable sit_vtable;
+extern const NetDevVTable vti_vtable;
+extern const NetDevVTable vti6_vtable;
+extern const NetDevVTable gre_vtable;
+extern const NetDevVTable gretap_vtable;
+extern const NetDevVTable ip6gre_vtable;
+extern const NetDevVTable ip6gretap_vtable;
+extern const NetDevVTable ip6tnl_vtable;
+extern const NetDevVTable erspan_vtable;
+
+const char *ip6tnl_mode_to_string(Ip6TnlMode d) _const_;
+Ip6TnlMode ip6tnl_mode_from_string(const char *d) _pure_;
+
+CONFIG_PARSER_PROTOTYPE(config_parse_ip6tnl_mode);
+CONFIG_PARSER_PROTOTYPE(config_parse_tunnel_local_address);
+CONFIG_PARSER_PROTOTYPE(config_parse_tunnel_remote_address);
+CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_flowlabel);
+CONFIG_PARSER_PROTOTYPE(config_parse_encap_limit);
+CONFIG_PARSER_PROTOTYPE(config_parse_tunnel_key);
+CONFIG_PARSER_PROTOTYPE(config_parse_6rd_prefix);
+CONFIG_PARSER_PROTOTYPE(config_parse_erspan_version);
+CONFIG_PARSER_PROTOTYPE(config_parse_erspan_index);
+CONFIG_PARSER_PROTOTYPE(config_parse_erspan_direction);
+CONFIG_PARSER_PROTOTYPE(config_parse_erspan_hwid);