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/*
* 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 MPLS data structures definitions
*
*/
#ifndef included_vnet_srmpls_h
#define included_vnet_srmpls_h
#include <vnet/vnet.h>
#include <vnet/mpls/packet.h>
#include <vnet/fib/mpls_fib.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/lookup.h>
#include <vnet/dpo/dpo.h>
#include <vnet/dpo/replicate_dpo.h>
#include <stdlib.h>
#include <string.h>
/* SR policy types */
#define SR_POLICY_TYPE_DEFAULT 0
#define SR_POLICY_TYPE_SPRAY 1
#define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1
#define SR_STEER_IPV4 4
#define SR_STEER_IPV6 6
#define SR_TE_CO_BITS_00 0
#define SR_TE_CO_BITS_01 1
#define SR_TE_CO_BITS_10 2
#define SR_TE_CO_BITS_11 3
/**
* @brief SR Segment List (SID list)
*/
typedef struct
{
/* SIDs (key) */
mpls_label_t *segments;
/* SID list weight (wECMP / UCMP) */
u32 weight;
} mpls_sr_sl_t;
typedef struct
{
u32 *segments_lists; /**< Pool of SID lists indexes */
mpls_label_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 */
ip46_address_t endpoint; /**< Optional NH for SR TE */
u8 endpoint_type;
u32 color; /**< Optional color for SR TE */
} mpls_sr_policy_t;
/**
* @brief Steering db key
*
* L3 is IPv4/IPv6 + mask
*/
typedef 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 */
u8 traffic_type; /**< Traffic type (IPv4, IPv6, L2) */
u8 padding[3];
} sr_mpls_steering_key_t;
typedef struct
{
sr_mpls_steering_key_t classify; /**< Traffic classification */
mpls_label_t bsid; /**< SR Policy index */
ip46_address_t next_hop; /**< SR TE NH */
char nh_type;
u32 *color; /**< Vector of SR TE colors */
char co_bits; /**< Color-Only bits */
mpls_label_t vpn_label;
} mpls_sr_steering_policy_t;
/**
* @brief Segment Routing main datastructure
*/
typedef struct
{
/* SR SID lists */
mpls_sr_sl_t *sid_lists;
/* SR MPLS policies */
mpls_sr_policy_t *sr_policies;
/* Hash table mapping BindingSID to SR MPLS policy */
uword *sr_policies_index_hash;
/* Pool of SR steer policies instances */
mpls_sr_steering_policy_t *steer_policies;
/* MHash table mapping steering rules to SR steer instance */
mhash_t sr_steer_policies_hash;
/** SR TE **/
/* Hash table mapping (Color->Endpoint->BSID) for SR policies */
mhash_t sr_policies_c2e2eclabel_hash;
/* SR TE (internal) fib table (Endpoint, Color) */
u32 fib_table_EC;
/* Pool of (Endpoint, Color) hidden labels */
u32 *ec_labels;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} mpls_sr_main_t;
extern mpls_sr_main_t sr_mpls_main;
extern int
sr_mpls_policy_add (mpls_label_t bsid, mpls_label_t * segments,
u8 behavior, u32 weight);
extern int
sr_mpls_policy_mod (mpls_label_t bsid, u8 operation,
mpls_label_t * segments, u32 sl_index, u32 weight);
extern int sr_mpls_policy_del (mpls_label_t bsid);
extern int
sr_mpls_policy_assign_endpoint_color (mpls_label_t bsid,
ip46_address_t * endpoint,
u8 endpoint_type, u32 color);
extern int
sr_mpls_steering_policy_add (mpls_label_t bsid, u32 table_id,
ip46_address_t * prefix, u32 mask_width,
u8 traffic_type, ip46_address_t * next_hop,
u8 nh_type, u32 color, char co_bits,
mpls_label_t vpn_label);
extern int
sr_mpls_steering_policy_del (ip46_address_t * prefix,
u32 mask_width, u8 traffic_type, u32 table_id,
u32 color);
extern u32 find_or_create_internal_label (ip46_address_t endpoint, u32 color);
extern void internal_label_lock (ip46_address_t endpoint, u32 color);
extern void internal_label_unlock (ip46_address_t endpoint, u32 color);
#endif /* included_vnet_sr_mpls_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables: eval: (c-set-style "gnu") End:
*/
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