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.
18 * @brief Segment Routing data structures definitions
22 #ifndef included_vnet_sr_h
23 #define included_vnet_sr_h
25 #include <vnet/vnet.h>
26 #include <vnet/sr/sr_packet.h>
27 #include <vnet/ip/ip6_packet.h>
28 #include <vnet/ethernet/ethernet.h>
33 #define IPv6_DEFAULT_HEADER_LENGTH 40
34 #define IPv6_DEFAULT_HOP_LIMIT 64
35 #define IPv6_DEFAULT_MAX_MASK_WIDTH 128
37 #define SR_BEHAVIOR_END 1
38 #define SR_BEHAVIOR_X 2
39 #define SR_BEHAVIOR_D_FIRST 3 /* Unused. Separator in between regular and D */
40 #define SR_BEHAVIOR_DX2 4
41 #define SR_BEHAVIOR_DX6 5
42 #define SR_BEHAVIOR_DX4 6
43 #define SR_BEHAVIOR_DT6 7
44 #define SR_BEHAVIOR_DT4 8
45 #define SR_BEHAVIOR_LAST 9 /* Must always be the last one */
48 #define SR_STEER_IPV4 4
49 #define SR_STEER_IPV6 6
51 #define SR_FUNCTION_SIZE 4
52 #define SR_ARGUMENT_SIZE 4
54 #define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1
57 * @brief SR Segment List (SID list)
61 ip6_address_t *segments; /**< SIDs (key) */
63 u32 weight; /**< SID list weight (wECMP / UCMP) */
65 u8 *rewrite; /**< Precomputed rewrite header */
66 u8 *rewrite_bsid; /**< Precomputed rewrite header for bindingSID */
68 dpo_id_t bsid_dpo; /**< DPO for Encaps/Insert for BSID */
69 dpo_id_t ip6_dpo; /**< DPO for Encaps/Insert IPv6 */
70 dpo_id_t ip4_dpo; /**< DPO for Encaps IPv6 */
74 #define SR_POLICY_TYPE_DEFAULT 0
75 #define SR_POLICY_TYPE_SPRAY 1
81 u32 *segments_lists; /**< SID lists indexes (vector) */
83 ip6_address_t bsid; /**< BindingSID (key) */
85 u8 type; /**< Type (default is 0) */
87 /* SR Policy specific DPO */
88 /* IF Type = DEFAULT Then Load Balancer DPO among SID lists */
89 /* IF Type = SPRAY then Spray DPO with all SID lists */
90 dpo_id_t bsid_dpo; /**< SR Policy specific DPO - BSID */
91 dpo_id_t ip4_dpo; /**< SR Policy specific DPO - IPv6 */
92 dpo_id_t ip6_dpo; /**< SR Policy specific DPO - IPv4 */
94 u32 fib_table; /**< FIB table */
96 u8 is_encap; /**< Mode (0 is SRH insert, 1 Encaps) */
104 ip6_address_t localsid; /**< LocalSID IPv6 address */
106 char end_psp; /**< Combined with End.PSP? */
108 u16 behavior; /**< Behavior associated to this localsid */
112 u32 sw_if_index; /**< xconnect only */
113 u32 vrf_index; /**< vrf only */
116 u32 fib_table; /**< FIB table where localsid is registered */
118 u32 vlan_index; /**< VLAN tag (not an index) */
120 ip46_address_t next_hop; /**< Next_hop for xconnect usage only */
122 u32 nh_adj; /**< Next_adj for xconnect usage only */
124 void *plugin_mem; /**< Memory to be used by the plugin callback functions */
127 typedef int (sr_plugin_callback_t) (ip6_sr_localsid_t * localsid);
130 * @brief SR LocalSID behavior registration
134 u16 sr_localsid_function_number; /**< SR LocalSID plugin function (>SR_BEHAVIOR_LAST) */
136 u8 *function_name; /**< Function name. (key). */
138 u8 *keyword_str; /**< Behavior keyword (i.e. End.X) */
140 u8 *def_str; /**< Behavior definition (i.e. Endpoint with cross-connect) */
142 u8 *params_str; /**< Behavior parameters (i.e. <oif> <IP46next_hop>) */
144 dpo_type_t dpo; /**< DPO type registration */
146 format_function_t *ls_format; /**< LocalSID format function */
148 unformat_function_t *ls_unformat; /**< LocalSID unformat function */
150 sr_plugin_callback_t *creation; /**< Function within plugin that will be called after localsid creation*/
152 sr_plugin_callback_t *removal; /**< Function within plugin that will be called before localsid removal */
153 } sr_localsid_fn_registration_t;
156 * @brief Steering db key
158 * L3 is IPv4/IPv6 + mask
159 * L2 is sf_if_index + vlan
167 ip46_address_t prefix; /**< IP address of the prefix */
168 u32 mask_width; /**< Mask width of the prefix */
169 u32 fib_table; /**< VRF of the prefix */
173 u32 sw_if_index; /**< Incoming software interface */
176 u8 traffic_type; /**< Traffic type (IPv4, IPv6, L2) */
181 sr_steering_key_t classify; /**< Traffic classification */
182 u32 sr_policy; /**< SR Policy index */
183 } ip6_sr_steering_policy_t;
186 * @brief Segment Routing main datastructure
190 /* ip6-lookup next index for imposition FIB entries */
191 u32 ip6_lookup_sr_next_index;
193 /* ip6-replicate next index for multicast tunnel */
194 u32 ip6_lookup_sr_spray_index;
196 /* IP4-lookup -> SR rewrite next index */
197 u32 ip4_lookup_sr_policy_rewrite_encaps_index;
198 u32 ip4_lookup_sr_policy_rewrite_insert_index;
200 /* IP6-lookup -> SR rewrite next index */
201 u32 ip6_lookup_sr_policy_rewrite_encaps_index;
202 u32 ip6_lookup_sr_policy_rewrite_insert_index;
204 /* L2-input -> SR rewrite next index */
205 u32 l2_sr_policy_rewrite_index;
207 /* IP6-lookup -> SR LocalSID (SR End processing) index */
208 u32 ip6_lookup_sr_localsid_index;
211 ip6_sr_sl_t *sid_lists;
214 ip6_sr_policy_t *sr_policies;
216 /* Find an SR policy by its BindingSID */
217 ip6_address_t *sr_policy_index_by_key;
219 /* Pool of SR localsid instances */
220 ip6_sr_localsid_t *localsids;
222 /* Find a SR localsid instance based on its functionID */
223 ip6_address_t *localsids_index_by_key;
225 /* Pool of SR steer policies instances */
226 ip6_sr_steering_policy_t *steer_policies;
228 /* Find a steer policy based on its classifier */
229 sr_steering_key_t *steer_policies_index_by_key;
231 /* L2 steering ifaces - sr_policies */
232 u32 *sw_iface_sr_policies;
235 dpo_type_t sr_pr_spray_dpo_type;
237 /* Plugin functions */
238 sr_localsid_fn_registration_t *plugin_functions;
240 /* Find plugin function by name */
241 uword *plugin_functions_by_key;
244 vlib_combined_counter_main_t sr_ls_valid_counters;
245 vlib_combined_counter_main_t sr_ls_invalid_counters;
247 /* SR Policies FIBs */
252 vlib_main_t *vlib_main;
253 vnet_main_t *vnet_main;
256 ip6_sr_main_t sr_main;
258 extern vlib_node_registration_t sr_policy_rewrite_encaps_node;
259 extern vlib_node_registration_t sr_policy_rewrite_insert_node;
260 extern vlib_node_registration_t sr_localsid_node;
261 extern vlib_node_registration_t sr_localsid_d_node;
263 void sr_dpo_lock (dpo_id_t * dpo);
264 void sr_dpo_unlock (dpo_id_t * dpo);
266 int sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
267 u8 * keyword_str, u8 * def_str,
268 u8 * params_str, dpo_type_t * dpo,
269 format_function_t * ls_format,
270 unformat_function_t * ls_unformat,
271 sr_plugin_callback_t * creation_fn,
272 sr_plugin_callback_t * removal_fn);
275 sr_policy_add (ip6_address_t * bsid, ip6_address_t * segments,
276 u32 weight, u8 behavior, u32 fib_table, u8 is_encap);
278 sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table,
279 u8 operation, ip6_address_t * segments, u32 sl_index,
281 int sr_policy_del (ip6_address_t * bsid, u32 index);
283 int sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
284 char end_psp, u8 behavior, u32 sw_if_index,
285 u32 vlan_index, u32 fib_table, ip46_address_t * nh_addr,
286 void *ls_plugin_mem);
289 sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index,
290 u32 table_id, ip46_address_t * prefix, u32 mask_width,
291 u32 sw_if_index, u8 traffic_type);
293 #endif /* included_vnet_sr_h */
296 * fd.io coding-style-patch-verification: ON
299 * eval: (c-set-style "gnu")