2 * Copyright (c) 2017 SUSE LLC.
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_geneve_h
16 #define included_vnet_geneve_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/geneve/geneve_packet.h>
27 #include <vnet/ip/ip4_packet.h>
28 #include <vnet/ip/ip6_packet.h>
29 #include <vnet/udp/udp.h>
30 #include <vnet/dpo/dpo.h>
31 #include <vnet/adj/adj_types.h>
33 #define SUPPORT_OPTIONS_HEADER 0
35 typedef CLIB_PACKED (struct
37 ip4_header_t ip4; /* 20 bytes */
38 udp_header_t udp; /* 8 bytes */
39 geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */
40 }) ip4_geneve_header_t;
42 typedef CLIB_PACKED (struct
44 ip6_header_t ip6; /* 40 bytes */
45 udp_header_t udp; /* 8 bytes */
46 geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */
47 }) ip6_geneve_header_t;
49 typedef CLIB_PACKED (struct
52 * Key fields: ip source and geneve vni on incoming GENEVE packet
53 * all fields in NET byte order
60 u32 vni; /* shifted left 8 bits */
64 }) geneve4_tunnel_key_t;
66 typedef CLIB_PACKED (struct
69 * Key fields: ip source and geneve vni on incoming GENEVE packet
70 * all fields in NET byte order
73 u32 vni; /* shifted left 8 bits */
74 }) geneve6_tunnel_key_t;
78 /* Rewrite string. $$$$ embed vnet_rewrite header */
81 /* FIB DPO for IP forwarding of GENEVE encap packet */
84 /* geneve VNI in HOST byte order */
87 /* geneve OPTIONS LEN in HOST byte order */
88 #if SUPPORT_OPTIONS_HEADER==1
92 /* tunnel local and remote addresses */
94 ip46_address_t remote;
96 /* mcast packet output intfc index (used only if remote is mcast) */
97 u32 mcast_sw_if_index;
99 /* decap next index */
100 u32 decap_next_index;
102 /* The FIB index for local/remote addresses */
105 /* vnet intfc index */
110 * Linkage into the FIB object graph
115 * The FIB entry for (depending on GENEVE tunnel is unicast or mcast)
116 * sending unicast GENEVE encap packets or receiving mcast GENEVE packets
118 fib_node_index_t fib_entry_index;
119 adj_index_t mcast_adj_index;
122 * The tunnel is a child of the FIB entry for its desintion. This is
123 * so it receives updates when the forwarding information for that entry
125 * The tunnels sibling index on the FIB entry's dependency list.
130 #define foreach_geneve_input_next \
131 _(DROP, "error-drop") \
132 _(L2_INPUT, "l2-input")
136 #define _(s,n) GENEVE_INPUT_NEXT_##s,
137 foreach_geneve_input_next
140 } geneve_input_next_t;
144 #define geneve_error(n,s) GENEVE_ERROR_##n,
145 #include <vnet/geneve/geneve_error.def>
148 } geneve_input_error_t;
152 /* vector of encap tunnel instances */
153 geneve_tunnel_t *tunnels;
155 /* lookup tunnel by key */
156 uword *geneve4_tunnel_by_key; /* keyed on ipv4.remote + vni */
157 uword *geneve6_tunnel_by_key; /* keyed on ipv6.remote + vni */
159 /* local VTEP IPs ref count used by geneve-bypass node to check if
160 received GENEVE packet DIP matches any local VTEP address */
161 uword *vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
162 uword *vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
164 /* mcast shared info */
165 uword *mcast_shared; /* keyed on mcast ip46 addr */
167 /* Free vlib hw_if_indices */
168 u32 *free_geneve_tunnel_hw_if_indices;
170 /* Mapping from sw_if_index to tunnel index */
171 u32 *tunnel_index_by_sw_if_index;
174 vlib_main_t *vlib_main;
175 vnet_main_t *vnet_main;
178 extern geneve_main_t geneve_main;
180 extern vlib_node_registration_t geneve4_input_node;
181 extern vlib_node_registration_t geneve6_input_node;
182 extern vlib_node_registration_t geneve4_encap_node;
183 extern vlib_node_registration_t geneve6_encap_node;
185 u8 *format_geneve_encap_trace (u8 * s, va_list * args);
191 /* we normally use is_ip4, but since this adds to the
192 * structure, this seems less of abreaking change */
194 ip46_address_t local, remote;
195 u32 mcast_sw_if_index;
197 u32 decap_next_index;
199 } vnet_geneve_add_del_tunnel_args_t;
201 int vnet_geneve_add_del_tunnel
202 (vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
204 void vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable);
205 #endif /* included_vnet_geneve_h */
208 * fd.io coding-style-patch-verification: ON
211 * eval: (c-set-style "gnu")