+++ /dev/null
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * @file
- * @brief Segment Routing data structures definitions
- *
- */
-
-#ifndef included_vnet_sr_h
-#define included_vnet_sr_h
-
-#include <vnet/vnet.h>
-#include <vnet/sr/sr_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/ethernet/ethernet.h>
-
-#include <stdlib.h>
-#include <string.h>
-
-#define IPv6_DEFAULT_HEADER_LENGTH 40
-#define IPv6_DEFAULT_HOP_LIMIT 64
-#define IPv6_DEFAULT_MAX_MASK_WIDTH 128
-
-#define SR_BEHAVIOR_END 1
-#define SR_BEHAVIOR_X 2
-#define SR_BEHAVIOR_D_FIRST 3 /* Unused. Separator in between regular and D */
-#define SR_BEHAVIOR_DX2 4
-#define SR_BEHAVIOR_DX6 5
-#define SR_BEHAVIOR_DX4 6
-#define SR_BEHAVIOR_DT6 7
-#define SR_BEHAVIOR_DT4 8
-#define SR_BEHAVIOR_LAST 9 /* Must always be the last one */
-
-#define SR_STEER_L2 2
-#define SR_STEER_IPV4 4
-#define SR_STEER_IPV6 6
-
-#define SR_FUNCTION_SIZE 4
-#define SR_ARGUMENT_SIZE 4
-
-#define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1
-
-/**
- * @brief SR Segment List (SID list)
- */
-typedef struct
-{
- ip6_address_t *segments; /**< SIDs (key) */
-
- u32 weight; /**< SID list weight (wECMP / UCMP) */
-
- u8 *rewrite; /**< Precomputed rewrite header */
- u8 *rewrite_bsid; /**< Precomputed rewrite header for bindingSID */
-
- dpo_id_t bsid_dpo; /**< DPO for Encaps/Insert for BSID */
- dpo_id_t ip6_dpo; /**< DPO for Encaps/Insert IPv6 */
- dpo_id_t ip4_dpo; /**< DPO for Encaps IPv6 */
-} ip6_sr_sl_t;
-
-/* SR policy types */
-#define SR_POLICY_TYPE_DEFAULT 0
-#define SR_POLICY_TYPE_SPRAY 1
-/**
- * @brief SR Policy
- */
-typedef struct
-{
- u32 *segments_lists; /**< SID lists indexes (vector) */
-
- ip6_address_t bsid; /**< BindingSID (key) */
-
- u8 type; /**< Type (default is 0) */
- /* SR Policy specific DPO */
- /* IF Type = DEFAULT Then Load Balancer DPO among SID lists */
- /* IF Type = SPRAY then Spray DPO with all SID lists */
- dpo_id_t bsid_dpo; /**< SR Policy specific DPO - BSID */
- dpo_id_t ip4_dpo; /**< SR Policy specific DPO - IPv6 */
- dpo_id_t ip6_dpo; /**< SR Policy specific DPO - IPv4 */
-
- u32 fib_table; /**< FIB table */
-
- u8 is_encap; /**< Mode (0 is SRH insert, 1 Encaps) */
-} ip6_sr_policy_t;
-
-/**
- * @brief SR LocalSID
- */
-typedef struct
-{
- ip6_address_t localsid; /**< LocalSID IPv6 address */
-
- char end_psp; /**< Combined with End.PSP? */
-
- u16 behavior; /**< Behavior associated to this localsid */
-
- union
- {
- u32 sw_if_index; /**< xconnect only */
- u32 vrf_index; /**< vrf only */
- };
-
- u32 fib_table; /**< FIB table where localsid is registered */
-
- u32 vlan_index; /**< VLAN tag (not an index) */
-
- ip46_address_t next_hop; /**< Next_hop for xconnect usage only */
-
- u32 nh_adj; /**< Next_adj for xconnect usage only */
-
- void *plugin_mem; /**< Memory to be used by the plugin callback functions */
-} ip6_sr_localsid_t;
-
-typedef int (sr_plugin_callback_t) (ip6_sr_localsid_t * localsid);
-
-/**
- * @brief SR LocalSID behavior registration
- */
-typedef struct
-{
- u16 sr_localsid_function_number; /**< SR LocalSID plugin function (>SR_BEHAVIOR_LAST) */
-
- u8 *function_name; /**< Function name. (key). */
-
- u8 *keyword_str; /**< Behavior keyword (i.e. End.X) */
-
- u8 *def_str; /**< Behavior definition (i.e. Endpoint with cross-connect) */
-
- u8 *params_str; /**< Behavior parameters (i.e. <oif> <IP46next_hop>) */
-
- dpo_type_t dpo; /**< DPO type registration */
-
- format_function_t *ls_format; /**< LocalSID format function */
-
- unformat_function_t *ls_unformat; /**< LocalSID unformat function */
-
- sr_plugin_callback_t *creation; /**< Function within plugin that will be called after localsid creation*/
-
- sr_plugin_callback_t *removal; /**< Function within plugin that will be called before localsid removal */
-} sr_localsid_fn_registration_t;
-
-/**
- * @brief Steering db key
- *
- * L3 is IPv4/IPv6 + mask
- * L2 is sf_if_index + vlan
- */
-typedef struct
-{
- union
- {
- struct
- {
- ip46_address_t prefix; /**< IP address of the prefix */
- u32 mask_width; /**< Mask width of the prefix */
- u32 fib_table; /**< VRF of the prefix */
- } l3;
- struct
- {
- u32 sw_if_index; /**< Incoming software interface */
- } l2;
- };
- u8 traffic_type; /**< Traffic type (IPv4, IPv6, L2) */
- u8 padding[3];
-} sr_steering_key_t;
-
-typedef struct
-{
- sr_steering_key_t classify; /**< Traffic classification */
- u32 sr_policy; /**< SR Policy index */
-} ip6_sr_steering_policy_t;
-
-/**
- * @brief Segment Routing main datastructure
- */
-typedef struct
-{
- /* L2-input -> SR rewrite next index */
- u32 l2_sr_policy_rewrite_index;
-
- /* SR SID lists */
- ip6_sr_sl_t *sid_lists;
-
- /* SR policies */
- ip6_sr_policy_t *sr_policies;
-
- /* Hash table mapping BindingSID to SR policy */
- mhash_t sr_policies_index_hash;
-
- /* Pool of SR localsid instances */
- ip6_sr_localsid_t *localsids;
-
- /* Hash table mapping LOC:FUNC to SR LocalSID instance */
- mhash_t sr_localsids_index_hash;
-
- /* Pool of SR steer policies instances */
- ip6_sr_steering_policy_t *steer_policies;
-
- /* Hash table mapping steering rules to SR steer instance */
- mhash_t sr_steer_policies_hash;
-
- /* L2 steering ifaces - sr_policies */
- u32 *sw_iface_sr_policies;
-
- /* Spray DPO */
- dpo_type_t sr_pr_spray_dpo_type;
-
- /* Plugin functions */
- sr_localsid_fn_registration_t *plugin_functions;
-
- /* Find plugin function by name */
- uword *plugin_functions_by_key;
-
- /* Counters */
- vlib_combined_counter_main_t sr_ls_valid_counters;
- vlib_combined_counter_main_t sr_ls_invalid_counters;
-
- /* SR Policies FIBs */
- u32 fib_table_ip6;
- u32 fib_table_ip4;
-
- /* convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} ip6_sr_main_t;
-
-ip6_sr_main_t sr_main;
-
-extern vlib_node_registration_t sr_policy_rewrite_encaps_node;
-extern vlib_node_registration_t sr_policy_rewrite_insert_node;
-extern vlib_node_registration_t sr_localsid_node;
-extern vlib_node_registration_t sr_localsid_d_node;
-
-void sr_dpo_lock (dpo_id_t * dpo);
-void sr_dpo_unlock (dpo_id_t * dpo);
-
-int sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
- u8 * keyword_str, u8 * def_str,
- u8 * params_str, dpo_type_t * dpo,
- format_function_t * ls_format,
- unformat_function_t * ls_unformat,
- sr_plugin_callback_t * creation_fn,
- sr_plugin_callback_t * removal_fn);
-
-int
-sr_policy_add (ip6_address_t * bsid, ip6_address_t * segments,
- u32 weight, u8 behavior, u32 fib_table, u8 is_encap);
-int
-sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table,
- u8 operation, ip6_address_t * segments, u32 sl_index,
- u32 weight);
-int sr_policy_del (ip6_address_t * bsid, u32 index);
-
-int sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
- char end_psp, u8 behavior, u32 sw_if_index,
- u32 vlan_index, u32 fib_table, ip46_address_t * nh_addr,
- void *ls_plugin_mem);
-
-int
-sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index,
- u32 table_id, ip46_address_t * prefix, u32 mask_width,
- u32 sw_if_index, u8 traffic_type);
-
-/**
- * @brief SR rewrite string computation for SRH insertion (inline)
- *
- * @param sl is a vector of IPv6 addresses composing the Segment List
- *
- * @return precomputed rewrite string for SRH insertion
- */
-static inline u8 *
-ip6_sr_compute_rewrite_string_insert (ip6_address_t * sl)
-{
- ip6_sr_header_t *srh;
- ip6_address_t *addrp, *this_address;
- u32 header_length = 0;
- u8 *rs = NULL;
-
- header_length = 0;
- header_length += sizeof (ip6_sr_header_t);
- header_length += (vec_len (sl) + 1) * sizeof (ip6_address_t);
-
- vec_validate (rs, header_length - 1);
-
- srh = (ip6_sr_header_t *) rs;
- srh->type = ROUTING_HEADER_TYPE_SR;
- srh->segments_left = vec_len (sl);
- srh->first_segment = vec_len (sl);
- srh->length = ((sizeof (ip6_sr_header_t) +
- ((vec_len (sl) + 1) * sizeof (ip6_address_t))) / 8) - 1;
- srh->flags = 0x00;
- srh->reserved = 0x0000;
- addrp = srh->segments + vec_len (sl);
- vec_foreach (this_address, sl)
- {
- clib_memcpy (addrp->as_u8, this_address->as_u8, sizeof (ip6_address_t));
- addrp--;
- }
- return rs;
-}
-
-
-#endif /* included_vnet_sr_h */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff