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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.
 */
#ifndef __included_vat_h__
#define __included_vat_h__

#include <stdio.h>
#include <setjmp.h>
#include <vppinfra/clib.h>
#include <vppinfra/format.h>
#include <vppinfra/error.h>
#include <vppinfra/time.h>
#include <vppinfra/macros.h>
#include <vnet/vnet.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>

#include "vat/json_format.h"

typedef struct {
    u8 * interface_name;
    u32 sw_if_index;
    /* Subinterface ID. A number 0-N to uniquely identify this subinterface under the super interface*/
    u32 sub_id;

    /* 0 = dot1q, 1=dot1ad */
    u8 sub_dot1ad;

    /* Number of tags 0-2 */
    u8 sub_number_of_tags;
    u16 sub_outer_vlan_id;
    u16 sub_inner_vlan_id;
    u8 sub_exact_match;
    u8 sub_default;
    u8 sub_outer_vlan_id_any;
    u8 sub_inner_vlan_id_any;

    /* vlan tag rewrite */
    u32 vtr_op;
    u32 vtr_push_dot1q;
    u32 vtr_tag1;
    u32 vtr_tag2;
} sw_interface_subif_t;

typedef struct {
    u8 ip[16];
    u8 prefix_length;
} ip_address_details_t;

typedef struct {
    u8 present;
    ip_address_details_t * addr;
} ip_details_t;

typedef struct {
    u64 packets;
    u64 bytes;
} interface_counter_t;

typedef struct {
    struct in_addr address;
    u8 address_length;
    u64 packets;
    u64 bytes;
} ip4_fib_counter_t;

typedef struct {
    struct in6_addr address;
    u8 address_length;
    u64 packets;
    u64 bytes;
} ip6_fib_counter_t;

typedef struct {
    /* vpe input queue */
    unix_shared_memory_queue_t * vl_input_queue;

    /* interface name table */
    uword * sw_if_index_by_interface_name;

    /* subinterface table */
    sw_interface_subif_t * sw_if_subif_table;

    /* Graph node table */
    uword * graph_node_index_by_name;
    vlib_node_t ** graph_nodes;

    /* ip tables */
    ip_details_t * ip_details_by_sw_if_index[2];

    /* sw_if_index of currently processed interface */
    u32 current_sw_if_index;

    /* remember that we are dumping ipv6 */
    u8 is_ipv6;

    /* function table */ 
    uword * function_by_name;

    /* help strings */
    uword * help_by_name;

    /* macro table */
    macro_main_t macro_main;

    /* Errors by number */
    uword * error_string_by_error_number;


    /* Main thread can spin (w/ timeout) here if needed */
    u32 async_mode;
    u32 async_errors;
    volatile u32 result_ready;
    volatile i32 retval;
    volatile u32 sw_if_index;
    volatile u8 *shmem_result;

    /* our client index */
    u32 my_client_index;

    /* Time is of the essence... */
    clib_time_t clib_time;

    /* Unwind (so we can quit) */
    jmp_buf jump_buf;

    /* temporary parse buffer */
    unformat_input_t *input;

    /* input buffer */
    u8 * inbuf;

    /* stdio input / output FILEs */
    FILE *ifp, *ofp;
    u8 * current_file;
    u32 input_line_number;

    /* exec mode toggle */
    int exec_mode;

    /* Regenerate the interface table */
    volatile int regenerate_interface_table;

    /* flag for JSON output format */
    u8 json_output;

    /* flag for interface event display */
    u8 interface_event_display;

    /* JSON tree used in composing dump api call results */
    vat_json_node_t json_tree;

    /* counters */
    u64 **simple_interface_counters;
    interface_counter_t **combined_interface_counters;
    ip4_fib_counter_t **ip4_fib_counters;
    u32 *ip4_fib_counters_vrf_id_by_index;
    ip6_fib_counter_t **ip6_fib_counters;
    u32 *ip6_fib_counters_vrf_id_by_index;

} vat_main_t;

vat_main_t vat_main;

static inline f64 vat_time_now (vat_main_t *vam)
{
    return clib_time_now (&vam->clib_time);
}

#define errmsg(fmt,args...)                             \
do {                                                    \
    if(vam->ifp != stdin)                               \
        fformat(vam->ofp,"%s(%d): ", vam->current_file, \
                vam->input_line_number);                \
    fformat(vam->ofp, fmt, ##args);                     \
    fflush(vam->ofp);					\
} while(0);

void vat_api_hookup (vat_main_t *vam);
int api_sw_interface_dump (vat_main_t * vam);
void do_one_file (vat_main_t * vam);
int exec (vat_main_t * vam);

/* Plugin API library functions */
char *vat_plugin_path;
char *vat_plugin_name_filter;
void vat_plugin_api_reference(void);
uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
uword unformat_ip4_address (unformat_input_t * input, va_list * args);
uword unformat_ethernet_address (unformat_input_t * input, va_list * args);
uword unformat_ethernet_type_host_byte_order (unformat_input_t * input,
                                              va_list * args);
uword unformat_ip6_address (unformat_input_t * input, va_list * args);
u8 * format_ip4_address (u8 * s, va_list * args);
u8 * format_ethernet_address (u8 * s, va_list * args);


#endif /* __included_vat_h__ */