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/l2/l2_input.h>
28 #include <vnet/l2/l2_output.h>
29 #include <vnet/l2/l2_bd.h>
30 #include <vnet/ethernet/ethernet.h>
31 #include <vnet/vxlan-gpe/vxlan_gpe_packet.h>
32 #include <vnet/ip/ip4_packet.h>
33 #include <vnet/ip/ip6_packet.h>
34 #include <vnet/udp/udp.h>
35 #include <vnet/dpo/dpo.h>
36 #include <vnet/adj/adj_types.h>
39 * @brief VXLAN GPE header struct
42 typedef CLIB_PACKED (struct {
48 vxlan_gpe_header_t vxlan;
49 }) ip4_vxlan_gpe_header_t;
51 typedef CLIB_PACKED (struct {
57 vxlan_gpe_header_t vxlan;
58 }) ip6_vxlan_gpe_header_t;
61 * @brief Key struct for IPv4 VXLAN GPE tunnel.
62 * Key fields: local remote, vni
63 * all fields in NET byte order
66 typedef CLIB_PACKED(struct {
77 }) vxlan4_gpe_tunnel_key_t;
80 * @brief Key struct for IPv6 VXLAN GPE tunnel.
81 * Key fields: local remote, vni
82 * all fields in NET byte order
85 typedef CLIB_PACKED(struct {
89 }) vxlan6_gpe_tunnel_key_t;
92 * @brief Struct for VXLAN GPE tunnel
95 /** Rewrite string. $$$$ embed vnet_rewrite header */
98 /** encapsulated protocol */
101 /* FIB DPO for IP forwarding of VXLAN-GPE encap packet */
103 /** tunnel local address */
104 ip46_address_t local;
105 /** tunnel remote address */
106 ip46_address_t remote;
108 /* mcast packet output intfc index (used only if dst is mcast) */
109 u32 mcast_sw_if_index;
111 /** FIB indices - tunnel partner lookup here */
113 /** FIB indices - inner IP packet lookup here */
116 /** VXLAN GPE VNI in HOST byte order, shifted left 8 bits */
119 /** vnet intfc hw_if_index */
121 /** vnet intfc sw_if_index */
127 /** rewrite size for dynamic plugins like iOAM */
130 /** Next node after VxLAN-GPE encap */
131 uword encap_next_node;
134 * Linkage into the FIB object graph
139 * The FIB entry for (depending on VXLAN-GPE tunnel is unicast or mcast)
140 * sending unicast VXLAN-GPE encap packets or receiving mcast VXLAN-GPE packets
142 fib_node_index_t fib_entry_index;
143 adj_index_t mcast_adj_index;
146 * The tunnel is a child of the FIB entry for its desintion. This is
147 * so it receives updates when the forwarding information for that entry
149 * The tunnels sibling index on the FIB entry's dependency list.
153 } vxlan_gpe_tunnel_t;
155 /** Flags for vxlan_gpe_tunnel_t */
156 #define VXLAN_GPE_TUNNEL_IS_IPV4 1
158 /** next nodes for VXLAN GPE input */
159 #define foreach_vxlan_gpe_input_next \
160 _(DROP, "error-drop") \
161 _(IP4_INPUT, "ip4-input") \
162 _(IP6_INPUT, "ip6-input") \
163 _(ETHERNET_INPUT, "ethernet-input")
165 /** struct for next nodes for VXLAN GPE input */
167 #define _(s,n) VXLAN_GPE_INPUT_NEXT_##s,
168 foreach_vxlan_gpe_input_next
170 VXLAN_GPE_INPUT_N_NEXT,
171 } vxlan_gpe_input_next_t;
173 /** struct for VXLAN GPE errors */
175 #define vxlan_gpe_error(n,s) VXLAN_GPE_ERROR_##n,
176 #include <vnet/vxlan-gpe/vxlan_gpe_error.def>
177 #undef vxlan_gpe_error
179 } vxlan_gpe_input_error_t;
181 /** Struct for VXLAN GPE node state */
183 /** vector of encap tunnel instances */
184 vxlan_gpe_tunnel_t *tunnels;
186 /** lookup IPv4 VXLAN GPE tunnel by key */
187 uword * vxlan4_gpe_tunnel_by_key;
188 /** lookup IPv6 VXLAN GPE tunnel by key */
189 uword * vxlan6_gpe_tunnel_by_key;
191 /* local VTEP IPs ref count used by vxlan-bypass node to check if
192 received VXLAN packet DIP matches any local VTEP address */
193 uword * vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
194 uword * vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
195 /* mcast shared info */
196 uword * mcast_shared; /* keyed on mcast ip46 addr */
197 /** Free vlib hw_if_indices */
198 u32 * free_vxlan_gpe_tunnel_hw_if_indices;
200 /** Mapping from sw_if_index to tunnel index */
201 u32 * tunnel_index_by_sw_if_index;
203 /** State convenience vlib_main_t */
204 vlib_main_t * vlib_main;
205 /** State convenience vnet_main_t */
206 vnet_main_t * vnet_main;
208 /** List of next nodes for the decap indexed on protocol */
209 uword decap_next_node_list[VXLAN_GPE_PROTOCOL_MAX];
212 vxlan_gpe_main_t vxlan_gpe_main;
214 extern vlib_node_registration_t vxlan_gpe_encap_node;
215 extern vlib_node_registration_t vxlan4_gpe_input_node;
216 extern vlib_node_registration_t vxlan6_gpe_input_node;
218 u8 * format_vxlan_gpe_encap_trace (u8 * s, va_list * args);
220 /** Struct for VXLAN GPE add/del args */
224 ip46_address_t local, remote;
226 u32 mcast_sw_if_index;
230 } vnet_vxlan_gpe_add_del_tunnel_args_t;
233 int vnet_vxlan_gpe_add_del_tunnel
234 (vnet_vxlan_gpe_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
237 int vxlan4_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size,
238 u8 protocol_override, uword encap_next_node);
239 int vxlan6_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size,
240 u8 protocol_override, uword encap_next_node);
243 * @brief Struct for defining VXLAN GPE next nodes
246 VXLAN_GPE_ENCAP_NEXT_IP4_LOOKUP,
247 VXLAN_GPE_ENCAP_NEXT_IP6_LOOKUP,
248 VXLAN_GPE_ENCAP_NEXT_DROP,
249 VXLAN_GPE_ENCAP_N_NEXT
250 } vxlan_gpe_encap_next_t;
253 void vxlan_gpe_unregister_decap_protocol (u8 protocol_id, uword next_node_index);
255 void vxlan_gpe_register_decap_protocol (u8 protocol_id, uword next_node_index);
257 void vnet_int_vxlan_gpe_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable);
259 #endif /* included_vnet_vxlan_gpe_h */