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 <vppinfra/bihash_24_8.h>
21 #include <vnet/vnet.h>
22 #include <vnet/ip/ip.h>
23 #include <vnet/l2/l2_input.h>
24 #include <vnet/l2/l2_output.h>
25 #include <vnet/l2/l2_bd.h>
26 #include <vnet/ethernet/ethernet.h>
27 #include <vnet/vxlan/vxlan_packet.h>
28 #include <vnet/ip/ip4_packet.h>
29 #include <vnet/ip/ip6_packet.h>
30 #include <vnet/udp/udp.h>
31 #include <vnet/dpo/dpo.h>
32 #include <vnet/adj/adj_types.h>
35 typedef CLIB_PACKED (struct {
36 ip4_header_t ip4; /* 20 bytes */
37 udp_header_t udp; /* 8 bytes */
38 vxlan_header_t vxlan; /* 8 bytes */
39 }) ip4_vxlan_header_t;
41 typedef CLIB_PACKED (struct {
42 ip6_header_t ip6; /* 40 bytes */
43 udp_header_t udp; /* 8 bytes */
44 vxlan_header_t vxlan; /* 8 bytes */
45 }) ip6_vxlan_header_t;
47 typedef CLIB_PACKED (union {
49 * Key fields: remote ip, vni on incoming VXLAN packet
50 * all fields in NET byte order
55 u32 vni; /* shifted left 8 bits */
58 }) vxlan4_tunnel_key_t;
61 * Key fields: remote ip, vni and fib index on incoming VXLAN packet
62 * ip, vni fields in NET byte order
63 * fib index field in host byte order
65 typedef BVT (clib_bihash_kv) vxlan6_tunnel_key_t;
70 /* Required for pool_get_aligned */
71 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
73 /* FIB DPO for IP forwarding of VXLAN encap packet */
76 /* vxlan VNI in HOST byte order */
79 /* tunnel src and dst addresses */
83 /* mcast packet output intfc index (used only if dst is mcast) */
84 u32 mcast_sw_if_index;
86 /* decap next index */
89 /* The FIB index for src/dst addresses */
92 /* vnet intfc index */
97 * Linkage into the FIB object graph
102 * The FIB entry for (depending on VXLAN tunnel is unicast or mcast)
103 * sending unicast VXLAN encap packets or receiving mcast VXLAN packets
105 fib_node_index_t fib_entry_index;
106 adj_index_t mcast_adj_index;
109 * The tunnel is a child of the FIB entry for its desintion. This is
110 * so it receives updates when the forwarding information for that entry
112 * The tunnels sibling index on the FIB entry's dependency list.
116 u32 flow_index; /* infra flow index */
117 u32 dev_instance; /* Real device instance in tunnel vector */
118 u32 user_instance; /* Instance name being shown to user */
120 vnet_declare_rewrite (VLIB_BUFFER_PRE_DATA_SIZE);
123 #define foreach_vxlan_input_next \
124 _(DROP, "error-drop") \
125 _(L2_INPUT, "l2-input")
129 #define _(s,n) VXLAN_INPUT_NEXT_##s,
130 foreach_vxlan_input_next
133 } vxlan_input_next_t;
137 #define vxlan_error(n,s) VXLAN_ERROR_##n,
138 #include <vnet/vxlan/vxlan_error.def>
141 } vxlan_input_error_t;
145 /* vector of encap tunnel instances */
146 vxlan_tunnel_t *tunnels;
148 /* lookup tunnel by key */
149 uword *vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
150 BVT (clib_bihash) vxlan6_tunnel_by_key; /* keyed on ipv6.dst + fib + vni */
152 /* local VTEP IPs ref count used by vxlan-bypass node to check if
153 received VXLAN packet DIP matches any local VTEP address */
154 uword *vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
155 uword *vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
157 /* mcast shared info */
158 uword *mcast_shared; /* keyed on mcast ip46 addr */
160 /* Mapping from sw_if_index to tunnel index */
161 u32 *tunnel_index_by_sw_if_index;
164 vlib_main_t *vlib_main;
165 vnet_main_t *vnet_main;
167 /* Record used instances */
168 uword *instance_used;
172 extern vxlan_main_t vxlan_main;
174 extern vlib_node_registration_t vxlan4_input_node;
175 extern vlib_node_registration_t vxlan6_input_node;
176 extern vlib_node_registration_t vxlan4_encap_node;
177 extern vlib_node_registration_t vxlan6_encap_node;
178 extern vlib_node_registration_t vxlan4_flow_input_node;
180 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 */
190 ip46_address_t src, dst;
191 u32 mcast_sw_if_index;
193 u32 decap_next_index;
195 } vnet_vxlan_add_del_tunnel_args_t;
197 int vnet_vxlan_add_del_tunnel
198 (vnet_vxlan_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
200 void vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable);
202 int vnet_vxlan_add_del_rx_flow (u32 hw_if_index, u32 t_imdex, int is_add);
204 u32 vnet_vxlan_get_tunnel_index (u32 sw_if_index);
205 #endif /* included_vnet_vxlan_h */
208 * fd.io coding-style-patch-verification: ON
211 * eval: (c-set-style "gnu")