mirror of
https://github.com/Hizenberg469/WheelTimer.git
synced 2026-04-19 18:52:22 +03:00
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/*
|
|
* =====================================================================================
|
|
*
|
|
* Filename: rt.h
|
|
*
|
|
* Description:
|
|
*
|
|
* Version: 1.0
|
|
* Created: 02/22/2020 06:14:33 AM
|
|
* Revision: none
|
|
* Compiler: gcc
|
|
*
|
|
* Author: Er. Abhishek Sagar, Juniper Networks (https://csepracticals.wixsite.com/csepracticals), sachinites@gmail.com
|
|
* Company: Juniper Networks
|
|
*
|
|
* This file is part of the Netlink Sockets distribution (https://github.com/sachinites)
|
|
* Copyright (c) 2019 Abhishek Sagar.
|
|
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General
|
|
* Public License as published by the Free Software Foundation, version 3.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* visit website : https://csepracticals.wixsite.com/csepracticals for more courses and projects
|
|
*
|
|
* =====================================================================================
|
|
*/
|
|
|
|
#ifndef __RT__
|
|
#define __RT__
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include "../timerlib.h"
|
|
|
|
#define RT_TABLE_EXP_TIME 30 /* 30 sec */
|
|
|
|
|
|
typedef struct rt_entry_keys_{
|
|
|
|
char dest[16];
|
|
char mask;
|
|
} rt_entry_keys_t;
|
|
|
|
typedef struct rt_entry_{
|
|
|
|
/* A Structure which represents only the keys of the
|
|
* Routing Table.*/
|
|
rt_entry_keys_t rt_entry_keys;
|
|
|
|
char gw_ip[16];
|
|
char oif[32];
|
|
uint32_t time_to_expire; /* time left to delete the entry */
|
|
struct rt_entry_ *prev;
|
|
struct rt_entry_ *next;
|
|
} rt_entry_t;
|
|
|
|
typedef struct rt_table_{
|
|
|
|
rt_entry_t *head;
|
|
} rt_table_t;
|
|
|
|
void
|
|
rt_init_rt_table(rt_table_t *rt_table);
|
|
|
|
bool
|
|
rt_add_new_rt_entry(rt_table_t *rt_table,
|
|
char *dest_ip, char mask, char *gw_ip, char *oif);
|
|
|
|
bool
|
|
rt_delete_rt_entry(rt_table_t *rt_table,
|
|
char *dest_ip, char mask);
|
|
|
|
bool
|
|
rt_update_rt_entry(rt_table_t *rt_table,
|
|
char *dest_ip, char mask,
|
|
char *new_gw_ip, char *new_oif);
|
|
|
|
void
|
|
rt_clear_rt_table(rt_table_t *rt_table);
|
|
|
|
void
|
|
rt_free_rt_table(rt_table_t *rt_table);
|
|
|
|
void
|
|
rt_dump_rt_table(rt_table_t *rt_table);
|
|
|
|
static inline void
|
|
rt_entry_remove(rt_table_t *rt_table,
|
|
rt_entry_t *rt_entry){
|
|
|
|
if(!rt_entry->prev){
|
|
if(rt_entry->next){
|
|
rt_entry->next->prev = 0;
|
|
rt_table->head = rt_entry->next;
|
|
rt_entry->next = 0;
|
|
return;
|
|
}
|
|
return;
|
|
}
|
|
if(!rt_entry->next){
|
|
rt_entry->prev->next = 0;
|
|
rt_entry->prev = 0;
|
|
return;
|
|
}
|
|
|
|
rt_entry->prev->next = rt_entry->next;
|
|
rt_entry->next->prev = rt_entry->prev;
|
|
rt_entry->prev = 0;
|
|
rt_entry->next = 0;
|
|
}
|
|
|
|
#define ITERTAE_RT_TABLE_BEGIN(rt_table_ptr, rt_entry_ptr) \
|
|
{ \
|
|
rt_entry_t *_next_rt_entry; \
|
|
for((rt_entry_ptr) = (rt_table_ptr)->head; \
|
|
(rt_entry_ptr); \
|
|
(rt_entry_ptr) = _next_rt_entry) { \
|
|
_next_rt_entry = (rt_entry_ptr)->next;
|
|
|
|
#define ITERTAE_RT_TABLE_END(rt_table_ptr, rt_entry_ptr) }}
|
|
|
|
#endif /* __RT__ */
|