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.
17 * @brief VXLAN GPE definitions
20 #ifndef included_vnet_vxlan_gpe_h
21 #define included_vnet_vxlan_gpe_h
23 #include <vppinfra/error.h>
24 #include <vppinfra/hash.h>
25 #include <vnet/vnet.h>
26 #include <vnet/ip/ip.h>
27 #include <vnet/ip/vtep.h>
28 #include <vnet/l2/l2_input.h>
29 #include <vnet/l2/l2_output.h>
30 #include <vnet/l2/l2_bd.h>
31 #include <vnet/ethernet/ethernet.h>
32 #include <vnet/vxlan-gpe/vxlan_gpe_packet.h>
33 #include <vnet/ip/ip4_packet.h>
34 #include <vnet/ip/ip6_packet.h>
35 #include <vnet/udp/udp.h>
36 #include <vnet/dpo/dpo.h>
37 #include <vnet/adj/adj_types.h>
40 * @brief VXLAN GPE header struct
44 typedef CLIB_PACKED (struct {
50 vxlan_gpe_header_t vxlan;
51 }) ip4_vxlan_gpe_header_t;
55 typedef CLIB_PACKED (struct {
61 vxlan_gpe_header_t vxlan;
62 }) ip6_vxlan_gpe_header_t;
66 * @brief Key struct for IPv4 VXLAN GPE tunnel.
67 * Key fields: local remote, vni
68 * all fields in NET byte order
72 typedef CLIB_PACKED(struct {
83 }) vxlan4_gpe_tunnel_key_t;
87 * @brief Key struct for IPv6 VXLAN GPE tunnel.
88 * Key fields: local remote, vni
89 * all fields in NET byte order
93 typedef CLIB_PACKED(struct {
97 }) vxlan6_gpe_tunnel_key_t;
101 * @brief Struct for VXLAN GPE tunnel
105 /* Required for pool_get_aligned */
106 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
108 /** Rewrite string. $$$$ embed vnet_rewrite header */
111 /** encapsulated protocol */
114 /* FIB DPO for IP forwarding of VXLAN-GPE encap packet */
116 /** tunnel local address */
117 ip46_address_t local;
118 /** tunnel remote address */
119 ip46_address_t remote;
121 /* mcast packet output intfc index (used only if dst is mcast) */
122 u32 mcast_sw_if_index;
124 /** FIB indices - tunnel partner lookup here */
126 /** FIB indices - inner IP packet lookup here */
129 /** VXLAN GPE VNI in HOST byte order, shifted left 8 bits */
132 /** vnet intfc hw_if_index */
134 /** vnet intfc sw_if_index */
140 /** rewrite size for dynamic plugins like iOAM */
143 /** Next node after VxLAN-GPE encap */
144 uword encap_next_node;
147 * Linkage into the FIB object graph
152 * The FIB entry for (depending on VXLAN-GPE tunnel is unicast or mcast)
153 * sending unicast VXLAN-GPE encap packets or receiving mcast VXLAN-GPE packets
155 fib_node_index_t fib_entry_index;
156 adj_index_t mcast_adj_index;
159 * The tunnel is a child of the FIB entry for its destination. This is
160 * so it receives updates when the forwarding information for that entry
162 * The tunnels sibling index on the FIB entry's dependency list.
166 } vxlan_gpe_tunnel_t;
168 /** Flags for vxlan_gpe_tunnel_t */
169 #define VXLAN_GPE_TUNNEL_IS_IPV4 1
171 /** next nodes for VXLAN GPE input */
172 #define foreach_vxlan_gpe_input_next \
173 _(DROP, "error-drop") \
174 _(IP4_INPUT, "ip4-input") \
175 _(IP6_INPUT, "ip6-input") \
176 _(L2_INPUT, "l2-input")
178 /** struct for next nodes for VXLAN GPE input */
181 #define _(s,n) VXLAN_GPE_INPUT_NEXT_##s,
182 foreach_vxlan_gpe_input_next
184 VXLAN_GPE_INPUT_N_NEXT,
185 } vxlan_gpe_input_next_t;
187 /** struct for VXLAN GPE errors */
190 #define vxlan_gpe_error(n,s) VXLAN_GPE_ERROR_##n,
191 #include <vnet/vxlan-gpe/vxlan_gpe_error.def>
192 #undef vxlan_gpe_error
194 } vxlan_gpe_input_error_t;
196 /** Struct for VXLAN GPE node state */
199 /** vector of encap tunnel instances */
200 vxlan_gpe_tunnel_t *tunnels;
202 /** lookup IPv4 VXLAN GPE tunnel by key */
203 uword *vxlan4_gpe_tunnel_by_key;
204 /** lookup IPv6 VXLAN GPE tunnel by key */
205 uword *vxlan6_gpe_tunnel_by_key;
207 /* local VTEP IPs ref count used by vxlan-bypass node to check if
208 received VXLAN packet DIP matches any local VTEP address */
209 vtep_table_t vtep_table;
210 /* mcast shared info */
211 uword *mcast_shared; /* keyed on mcast ip46 addr */
212 /** Free vlib hw_if_indices */
213 u32 *free_vxlan_gpe_tunnel_hw_if_indices;
215 /** Mapping from sw_if_index to tunnel index */
216 u32 *tunnel_index_by_sw_if_index;
218 /** State convenience vlib_main_t */
219 vlib_main_t *vlib_main;
220 /** State convenience vnet_main_t */
221 vnet_main_t *vnet_main;
223 /** List of next nodes for the decap indexed on protocol */
224 uword decap_next_node_list[VXLAN_GPE_PROTOCOL_MAX];
227 extern vxlan_gpe_main_t vxlan_gpe_main;
229 extern vlib_node_registration_t vxlan_gpe_encap_node;
230 extern vlib_node_registration_t vxlan4_gpe_input_node;
231 extern vlib_node_registration_t vxlan6_gpe_input_node;
233 u8 *format_vxlan_gpe_encap_trace (u8 * s, va_list * args);
235 /** Struct for VXLAN GPE add/del args */
240 ip46_address_t local, remote;
242 u32 mcast_sw_if_index;
246 } vnet_vxlan_gpe_add_del_tunnel_args_t;
249 int vnet_vxlan_gpe_add_del_tunnel
250 (vnet_vxlan_gpe_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
253 int vxlan4_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size,
254 u8 protocol_override, uword encap_next_node);
255 int vxlan6_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size,
256 u8 protocol_override, uword encap_next_node);
259 * @brief Struct for defining VXLAN GPE next nodes
263 VXLAN_GPE_ENCAP_NEXT_IP4_LOOKUP,
264 VXLAN_GPE_ENCAP_NEXT_IP6_LOOKUP,
265 VXLAN_GPE_ENCAP_NEXT_DROP,
266 VXLAN_GPE_ENCAP_N_NEXT
267 } vxlan_gpe_encap_next_t;
270 void vxlan_gpe_unregister_decap_protocol (u8 protocol_id,
271 uword next_node_index);
273 void vxlan_gpe_register_decap_protocol (u8 protocol_id,
274 uword next_node_index);
276 void vnet_int_vxlan_gpe_bypass_mode (u32 sw_if_index, u8 is_ip6,
279 #endif /* included_vnet_vxlan_gpe_h */
282 * fd.io coding-style-patch-verification: ON
285 * eval: (c-set-style "gnu")