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>
31 #include <vnet/adj/adj_types.h>
33 typedef CLIB_PACKED (struct {
34 ip4_header_t ip4; /* 20 bytes */
35 udp_header_t udp; /* 8 bytes */
36 vxlan_header_t vxlan; /* 8 bytes */
37 }) ip4_vxlan_header_t;
39 typedef CLIB_PACKED (struct {
40 ip6_header_t ip6; /* 40 bytes */
41 udp_header_t udp; /* 8 bytes */
42 vxlan_header_t vxlan; /* 8 bytes */
43 }) ip6_vxlan_header_t;
45 typedef CLIB_PACKED(struct {
47 * Key fields: ip src and vxlan vni on incoming VXLAN packet
48 * all fields in NET byte order
53 u32 vni; /* shifted left 8 bits */
57 }) vxlan4_tunnel_key_t;
59 typedef CLIB_PACKED(struct {
61 * Key fields: ip src and vxlan vni on incoming VXLAN packet
62 * all fields in NET byte order
65 u32 vni; /* shifted left 8 bits */
66 }) vxlan6_tunnel_key_t;
69 /* Rewrite string. $$$$ embed vnet_rewrite header */
72 /* FIB DPO for IP forwarding of VXLAN encap packet */
75 /* storage for the hash key */
77 vxlan4_tunnel_key_t *key4; /* unused for now */
78 vxlan6_tunnel_key_t *key6;
81 /* vxlan VNI in HOST byte order */
84 /* tunnel src and dst addresses */
88 /* mcast packet output intfc index (used only if dst is mcast) */
89 u32 mcast_sw_if_index;
91 /* decap next index */
94 /* The FIB index for src/dst addresses */
97 /* vnet intfc index */
102 * Linkage into the FIB object graph
107 * The FIB entry for (depending on VXLAN tunnel is unicast or mcast)
108 * sending unicast VXLAN encap packets or receiving mcast VXLAN packets
110 fib_node_index_t fib_entry_index;
111 adj_index_t mcast_adj_index;
114 * The tunnel is a child of the FIB entry for its desintion. This is
115 * so it receives updates when the forwarding information for that entry
117 * The tunnels sibling index on the FIB entry's dependency list.
122 #define foreach_vxlan_input_next \
123 _(DROP, "error-drop") \
124 _(L2_INPUT, "l2-input")
127 #define _(s,n) VXLAN_INPUT_NEXT_##s,
128 foreach_vxlan_input_next
131 } vxlan_input_next_t;
134 #define vxlan_error(n,s) VXLAN_ERROR_##n,
135 #include <vnet/vxlan/vxlan_error.def>
138 } vxlan_input_error_t;
142 fib_node_index_t fib_entry_index;
143 adj_index_t mcast_adj_index;
147 /* vector of encap tunnel instances */
148 vxlan_tunnel_t * tunnels;
150 /* lookup tunnel by key */
151 uword * vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
152 uword * vxlan6_tunnel_by_key; /* keyed on ipv6.dst + vni */
154 /* local VTEP IPs ref count used by vxlan-bypass node to check if
155 received VXLAN packet DIP matches any local VTEP address */
156 uword * vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
157 uword * vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
159 /* set of active remote mcast VTEP */
160 mcast_remote_t * mcast_eps;
161 uword * mcast_ep_by_ip; /* mcast VTEPs keyed on their ip46 addr */
163 /* Free vlib hw_if_indices */
164 u32 * free_vxlan_tunnel_hw_if_indices;
166 /* Mapping from sw_if_index to tunnel index */
167 u32 * tunnel_index_by_sw_if_index;
170 vlib_main_t * vlib_main;
171 vnet_main_t * vnet_main;
174 vxlan_main_t vxlan_main;
176 extern vlib_node_registration_t vxlan4_input_node;
177 extern vlib_node_registration_t vxlan6_input_node;
178 extern vlib_node_registration_t vxlan4_encap_node;
179 extern vlib_node_registration_t vxlan6_encap_node;
181 u8 * format_vxlan_encap_trace (u8 * s, va_list * args);
186 /* we normally use is_ip4, but since this adds to the
187 * structure, this seems less of abreaking change */
189 ip46_address_t src, dst;
190 u32 mcast_sw_if_index;
192 u32 decap_next_index;
194 } vnet_vxlan_add_del_tunnel_args_t;
196 int vnet_vxlan_add_del_tunnel
197 (vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
199 #endif /* included_vnet_vxlan_h */