2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #ifndef included_vnet_vxlan_h
16 #define included_vnet_vxlan_h
18 #include <vppinfra/error.h>
19 #include <vppinfra/hash.h>
20 #include <vnet/vnet.h>
21 #include <vnet/ip/ip.h>
22 #include <vnet/l2/l2_input.h>
23 #include <vnet/l2/l2_output.h>
24 #include <vnet/l2/l2_bd.h>
25 #include <vnet/ethernet/ethernet.h>
26 #include <vnet/vxlan/vxlan_packet.h>
27 #include <vnet/ip/ip4_packet.h>
28 #include <vnet/ip/ip6_packet.h>
29 #include <vnet/ip/udp.h>
30 #include <vnet/dpo/dpo.h>
32 typedef CLIB_PACKED (struct {
33 ip4_header_t ip4; /* 20 bytes */
34 udp_header_t udp; /* 8 bytes */
35 vxlan_header_t vxlan; /* 8 bytes */
36 }) ip4_vxlan_header_t;
38 typedef CLIB_PACKED (struct {
39 ip6_header_t ip6; /* 40 bytes */
40 udp_header_t udp; /* 8 bytes */
41 vxlan_header_t vxlan; /* 8 bytes */
42 }) ip6_vxlan_header_t;
44 typedef CLIB_PACKED(struct {
46 * Key fields: ip src and vxlan vni on incoming VXLAN packet
47 * all fields in NET byte order
52 u32 vni; /* shifted left 8 bits */
56 }) vxlan4_tunnel_key_t;
58 typedef CLIB_PACKED(struct {
60 * Key fields: ip src and vxlan vni on incoming VXLAN packet
61 * all fields in NET byte order
64 u32 vni; /* shifted left 8 bits */
65 }) vxlan6_tunnel_key_t;
68 /* Rewrite string. $$$$ embed vnet_rewrite header */
71 /* FIB DPO for IP forwarding of VXLAN encap packet */
74 /* storage for the hash key */
76 vxlan4_tunnel_key_t *key4; /* unused for now */
77 vxlan6_tunnel_key_t *key6;
80 /* vxlan VNI in HOST byte order */
83 /* tunnel src and dst addresses */
87 /* The FIB index for src/dst addresses */
90 /* vnet intfc index */
95 * Linkage into the FIB object graph
99 /* The FIB entry sourced by the tunnel for its destination prefix */
100 fib_node_index_t fib_entry_index;
103 * The tunnel is a child of the FIB entry for its desintion. This is
104 * so it receives updates when the forwarding information for that entry
106 * The tunnels sibling index on the FIB entry's dependency list.
111 #define foreach_vxlan_input_next \
112 _(DROP, "error-drop") \
113 _(L2_INPUT, "l2-input")
116 #define _(s,n) VXLAN_INPUT_NEXT_##s,
117 foreach_vxlan_input_next
120 } vxlan_input_next_t;
123 #define vxlan_error(n,s) VXLAN_ERROR_##n,
124 #include <vnet/vxlan/vxlan_error.def>
127 } vxlan_input_error_t;
130 /* vector of encap tunnel instances */
131 vxlan_tunnel_t *tunnels;
133 /* lookup tunnel by key */
134 uword * vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
135 uword * vxlan6_tunnel_by_key; /* keyed on ipv6.dst + vni */
137 /* Free vlib hw_if_indices */
138 u32 * free_vxlan_tunnel_hw_if_indices;
140 /* Mapping from sw_if_index to tunnel index */
141 u32 * tunnel_index_by_sw_if_index;
144 vlib_main_t * vlib_main;
145 vnet_main_t * vnet_main;
148 vxlan_main_t vxlan_main;
150 extern vlib_node_registration_t vxlan4_input_node;
151 extern vlib_node_registration_t vxlan6_input_node;
152 extern vlib_node_registration_t vxlan4_encap_node;
153 extern vlib_node_registration_t vxlan6_encap_node;
155 u8 * format_vxlan_encap_trace (u8 * s, va_list * args);
160 /* we normally use is_ip4, but since this adds to the
161 * structure, this seems less of abreaking change */
163 ip46_address_t src, dst;
165 u32 decap_next_index;
167 } vnet_vxlan_add_del_tunnel_args_t;
169 int vnet_vxlan_add_del_tunnel
170 (vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
172 #endif /* included_vnet_vxlan_h */