2 * Copyright (c) 2016 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 LISP-GPE definitions.
20 #ifndef included_vnet_lisp_gpe_h
21 #define included_vnet_lisp_gpe_h
23 #include <vppinfra/error.h>
24 #include <vppinfra/mhash.h>
25 #include <vnet/vnet.h>
26 #include <vnet/ip/ip.h>
27 #include <vnet/l2/l2_input.h>
28 #include <vnet/ethernet/ethernet.h>
29 #include <vnet/ip/ip4_packet.h>
30 #include <vnet/udp/udp.h>
31 #include <vnet/lisp-cp/lisp_types.h>
32 #include <vnet/lisp-gpe/lisp_gpe_packet.h>
33 #include <vnet/adj/adj_types.h>
34 #include <vppinfra/bihash_24_8.h>
35 #include <vppinfra/bihash_template.h>
37 /** IP4-UDP-LISP encap header */
39 typedef CLIB_PACKED (struct {
40 ip4_header_t ip4; /* 20 bytes */
41 udp_header_t udp; /* 8 bytes */
42 lisp_gpe_header_t lisp; /* 8 bytes */
43 }) ip4_udp_lisp_gpe_header_t;
46 /** IP6-UDP-LISP encap header */
48 typedef CLIB_PACKED (struct {
49 ip6_header_t ip6; /* 40 bytes */
50 udp_header_t udp; /* 8 bytes */
51 lisp_gpe_header_t lisp; /* 8 bytes */
52 }) ip6_udp_lisp_gpe_header_t;
55 #define foreach_lisp_gpe_ip_input_next \
56 _(DROP, "error-drop") \
57 _(IP4_INPUT, "ip4-input") \
58 _(IP6_INPUT, "ip6-input") \
59 _(L2_INPUT, "l2-input")
61 /** Enum of possible next nodes post LISP-GPE decap */
64 #define _(s,n) LISP_GPE_INPUT_NEXT_##s,
65 foreach_lisp_gpe_ip_input_next
67 LISP_GPE_INPUT_N_NEXT,
68 } lisp_gpe_input_next_t;
70 /* Arc to nsh-input added only if nsh-input exists */
71 #define LISP_GPE_INPUT_NEXT_NSH_INPUT 4
75 #define lisp_gpe_error(n,s) LISP_GPE_ERROR_##n,
76 #include <vnet/lisp-gpe/lisp_gpe_error.def>
81 typedef struct tunnel_lookup
83 /** Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */
84 uword *hw_if_index_by_dp_table;
86 /** lookup decap tunnel termination sw_if_index by vni and vice versa */
87 uword *sw_if_index_by_vni;
90 uword *vni_by_sw_if_index;
94 typedef enum gpe_encap_mode_e
101 /** LISP-GPE global state*/
102 typedef struct lisp_gpe_main
105 * @brief DB of all forwarding entries. The Key is:{l-EID,r-EID,vni}
106 * where the EID encodes L2 or L3
108 uword *lisp_gpe_fwd_entries;
111 * @brief A Pool of all LISP forwarding entries
113 struct lisp_gpe_fwd_entry_t_ *lisp_fwd_entry_pool;
115 /** Free vlib hw_if_indices */
116 u32 *free_tunnel_hw_if_indices;
120 /* L3 data structures
121 * ================== */
122 tunnel_lookup_t l3_ifaces;
124 /* L2 data structures
125 * ================== */
128 BVT (clib_bihash) l2_fib;
130 tunnel_lookup_t l2_ifaces;
132 /** Load-balance for a miss in the table */
133 dpo_id_t l2_lb_cp_lkup;
135 /* NSH data structures
136 * ================== */
138 BVT (clib_bihash) nsh_fib;
140 tunnel_lookup_t nsh_ifaces;
142 const dpo_id_t *nsh_cp_lkup;
144 gpe_encap_mode_t encap_mode;
147 vlib_main_t *vlib_main;
148 vnet_main_t *vnet_main;
151 ip_lookup_main_t *lm4;
152 ip_lookup_main_t *lm6;
155 /** LISP-GPE global state*/
156 lisp_gpe_main_t lisp_gpe_main;
158 always_inline lisp_gpe_main_t *
159 vnet_lisp_gpe_get_main ()
161 return &lisp_gpe_main;
165 extern vlib_node_registration_t lisp_gpe_ip4_input_node;
166 extern vlib_node_registration_t lisp_gpe_ip6_input_node;
167 extern vnet_hw_interface_class_t lisp_gpe_hw_class;
169 u8 *format_lisp_gpe_header_with_length (u8 * s, va_list * args);
171 /** Read LISP-GPE status */
172 u8 vnet_lisp_gpe_enable_disable_status (void);
175 lisp_gpe_l3_iface_find_or_create (lisp_gpe_main_t * lgm,
176 u32 overlay_table_id, u32 vni);
178 /** Add/del LISP-GPE interface. */
179 extern void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
180 extern u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
181 extern void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
182 extern u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
188 } vnet_lisp_gpe_enable_disable_args_t;
191 * vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a);
199 } negative_fwd_actions_e;
206 /** type of mapping */
209 /** action for negative mappings */
210 negative_fwd_actions_e action;
213 gid_address_t lcl_eid;
216 gid_address_t rmt_eid;
218 /** vector of locator pairs */
219 locator_pair_t *locator_pairs;
221 /** FIB index to lookup remote locator at encap */
224 /** FIB index to lookup inner IP at decap */
228 u32 decap_next_index;
230 /** VNI/tenant id in HOST byte order */
233 /** vrf or bd where fwd entry should be inserted */
236 /** table (vrf) id */
239 /** bridge domain id */
242 /** generic access */
245 } vnet_lisp_gpe_add_del_fwd_entry_args_t;
254 } lisp_api_gpe_fwd_entry_t;
256 #define foreach_lgpe_ip4_lookup_next \
257 _(DROP, "error-drop") \
258 _(LISP_CP_LOOKUP, "lisp-cp-lookup")
260 typedef enum lgpe_ip4_lookup_next
262 #define _(sym,str) LGPE_IP4_LOOKUP_NEXT_##sym,
263 foreach_lgpe_ip4_lookup_next
265 LGPE_IP4_LOOKUP_N_NEXT,
266 } lgpe_ip4_lookup_next_t;
268 #define foreach_lgpe_ip6_lookup_next \
269 _(DROP, "error-drop") \
270 _(LISP_CP_LOOKUP, "lisp-cp-lookup")
272 typedef enum lgpe_ip6_lookup_next
274 #define _(sym,str) LGPE_IP6_LOOKUP_NEXT_##sym,
275 foreach_lgpe_ip6_lookup_next
277 LGPE_IP6_LOOKUP_N_NEXT,
278 } lgpe_ip6_lookup_next_t;
280 u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args);
282 lisp_api_gpe_fwd_entry_t *vnet_lisp_gpe_fwd_entries_get_by_vni (u32 vni);
283 gpe_encap_mode_t vnet_gpe_get_encap_mode (void);
284 int vnet_gpe_set_encap_mode (gpe_encap_mode_t mode);
286 #endif /* included_vnet_lisp_gpe_h */
289 * fd.io coding-style-patch-verification: ON
292 * eval: (c-set-style "gnu")