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/* SPDX-License-Identifier: Apache-2.0
* Copyright(c) 2022 Cisco Systems, Inc.
*/
/**
* @file
* @brief SR Path Tracing data structures definitions
*
*/
#ifndef included_vnet_sr_pt_h
#define included_vnet_sr_pt_h
#define IP6_HBH_PT_TYPE 50
/*SR PT error codes*/
#define SR_PT_ERR_NOENT -1 /* No such entry*/
#define SR_PT_ERR_EXIST -2 /* Entry exists */
#define SR_PT_ERR_IFACE_INVALID -3 /* IFACE invalid */
#define SR_PT_ERR_ID_INVALID -4 /* ID invalid */
#define SR_PT_ERR_LOAD_INVALID -5 /* LOAD invalid*/
#define SR_PT_ERR_TTS_TEMPLATE_INVALID -6 /* TTS Template invalid */
/*SR PT paramters max values*/
#define SR_PT_ID_MAX 4095
#define SR_PT_LOAD_MAX 15
#define SR_PT_TTS_TEMPLATE_MAX 3
/*SR PT TTS Templates*/
#define SR_PT_TTS_TEMPLATE_0 0
#define SR_PT_TTS_TEMPLATE_1 1
#define SR_PT_TTS_TEMPLATE_2 2
#define SR_PT_TTS_TEMPLATE_3 3
#define SR_PT_TTS_TEMPLATE_DEFAULT 2
/*SR PT TTS Template shift value*/
#define SR_PT_TTS_SHIFT_TEMPLATE_0 8
#define SR_PT_TTS_SHIFT_TEMPLATE_1 12
#define SR_PT_TTS_SHIFT_TEMPLATE_2 16
#define SR_PT_TTS_SHIFT_TEMPLATE_3 20
/*PT node behaviors*/
#define PT_BEHAVIOR_SRC 0
#define PT_BEHAVIOR_MID 1
#define PT_BEHAVIOR_SNK 2
typedef struct
{
u32 iface; /**< Interface */
u16 id; /**< Interface ID */
u8 ingress_load; /**< Interface Ingress Load */
u8 egress_load; /**< Interface Egress Load */
u8 tts_template; /**< Interface TTS Template */
} sr_pt_iface_t;
typedef struct
{
u16 oif_oil;
u8 tts;
} __clib_packed sr_pt_cmd_t;
typedef struct
{
sr_pt_cmd_t cmd_stack[12];
} __clib_packed ip6_hop_by_hop_option_pt_t;
/**
* @brief SR Path Tracing main datastructure
*/
typedef struct
{
/* Pool of sr_pt_iface instances */
sr_pt_iface_t *sr_pt_iface;
/* Hash table for sr_pt_iface parameters */
mhash_t sr_pt_iface_index_hash;
/* convenience */
u16 msg_id_base;
} sr_pt_main_t;
extern sr_pt_main_t sr_pt_main;
extern vlib_node_registration_t sr_pt_node;
extern int sr_pt_add_iface (u32 iface, u16 id, u8 ingress_load, u8 egress_load,
u8 tts_template);
extern int sr_pt_del_iface (u32 iface);
extern void *sr_pt_find_iface (u32 iface);
#endif /* included_vnet_sr_pt_h */
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