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_bd.h>
24 #include <vnet/ethernet/ethernet.h>
25 #include <vnet/vxlan/vxlan_packet.h>
26 #include <vnet/ip/ip4_packet.h>
27 #include <vnet/ip/ip6_packet.h>
28 #include <vnet/ip/udp.h>
30 typedef CLIB_PACKED (struct {
31 ip4_header_t ip4; /* 20 bytes */
32 udp_header_t udp; /* 8 bytes */
33 vxlan_header_t vxlan; /* 8 bytes */
34 }) ip4_vxlan_header_t;
36 typedef CLIB_PACKED (struct {
37 ip6_header_t ip6; /* 40 bytes */
38 udp_header_t udp; /* 8 bytes */
39 vxlan_header_t vxlan; /* 8 bytes */
40 }) ip6_vxlan_header_t;
42 typedef CLIB_PACKED(struct {
44 * Key fields: ip src and vxlan vni on incoming VXLAN packet
45 * all fields in NET byte order
50 u32 vni; /* shifted left 8 bits */
54 }) vxlan4_tunnel_key_t;
56 typedef CLIB_PACKED(struct {
58 * Key fields: ip src and vxlan vni on incoming VXLAN packet
59 * all fields in NET byte order
62 u32 vni; /* shifted left 8 bits */
63 }) vxlan6_tunnel_key_t;
66 /* Rewrite string. $$$$ embed vnet_rewrite header */
69 /* tunnel src and dst addresses */
73 /* vxlan VNI in HOST byte order */
76 /* decap next index */
79 /* L3 FIB index and L2 BD ID */
80 u16 encap_fib_index; /* tunnel partner IP lookup here */
82 /* vnet intfc hw/sw_if_index */
86 union { /* storage for the hash key */
87 vxlan4_tunnel_key_t key4;
88 vxlan6_tunnel_key_t key6;
95 /* Flags for vxlan_tunnel_t.flags */
96 #define VXLAN_TUNNEL_IS_IPV4 1
98 #define foreach_vxlan_input_next \
99 _(DROP, "error-drop") \
100 _(L2_INPUT, "l2-input") \
101 _(IP4_INPUT, "ip4-input") \
102 _(IP6_INPUT, "ip6-input")
105 #define _(s,n) VXLAN_INPUT_NEXT_##s,
106 foreach_vxlan_input_next
109 } vxlan_input_next_t;
112 #define vxlan_error(n,s) VXLAN_ERROR_##n,
113 #include <vnet/vxlan/vxlan_error.def>
116 } vxlan_input_error_t;
119 /* vector of encap tunnel instances */
120 vxlan_tunnel_t *tunnels;
122 /* lookup tunnel by key */
123 uword * vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
124 uword * vxlan6_tunnel_by_key; /* keyed on ipv6.dst + vni */
126 /* Free vlib hw_if_indices */
127 u32 * free_vxlan_tunnel_hw_if_indices;
129 /* Dummy rewrite for deleted vxlan_tunnels with hw_if_indices as above */
130 u64 dummy4_str [sizeof(ip4_vxlan_header_t)/sizeof(u64) + 2];
131 #define vxlan4_dummy_rewrite ((u8 *) &vxlan_main.dummy4_str[1])
133 u64 dummy6_str [sizeof(ip6_vxlan_header_t)/sizeof(u64) + 2];
134 #define vxlan6_dummy_rewrite ((u8 *) &vxlan_main.dummy6_str[1])
136 /* Mapping from sw_if_index to tunnel index */
137 u32 * tunnel_index_by_sw_if_index;
140 vlib_main_t * vlib_main;
141 vnet_main_t * vnet_main;
144 vxlan_main_t vxlan_main;
146 extern vlib_node_registration_t vxlan4_input_node;
147 extern vlib_node_registration_t vxlan6_input_node;
148 extern vlib_node_registration_t vxlan_encap_node;
150 u8 * format_vxlan_encap_trace (u8 * s, va_list * args);
155 /* we normally use is_ip4, but since this adds to the
156 * structure, this seems less of abreaking change */
158 ip46_address_t src, dst;
160 u32 decap_next_index;
162 } vnet_vxlan_add_del_tunnel_args_t;
164 int vnet_vxlan_add_del_tunnel
165 (vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
167 #endif /* included_vnet_vxlan_h */