Files
Timer-Library/Assignment/rt.c
2024-06-01 10:49:19 +05:30

117 lines
2.5 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include "rt.h"
void
rt_init_rt_table(rt_table_t* rt_table) {
rt_table->head = NULL;
}
bool
rt_add_new_rt_entry(rt_table_t* rt_table,
char* dest,
char mask,
char* gw_ip,
char* oif,
void (*timer_cb)(Timer_t* , void* )) {
rt_entry_t* head = NULL;
rt_entry_t* rt_entry = NULL;
rt_entry = calloc(1, sizeof(rt_entry_t));
if (!rt_entry)
return false;
strncpy(rt_entry->rt_entry_keys.dest, dest, sizeof(rt_entry->rt_entry_keys.dest));
rt_entry->rt_entry_keys.mask = mask;
if (gw_ip)
strncpy(rt_entry->gw_ip, gw_ip, sizeof(rt_entry->gw_ip));
if (oif)
strncpy(rt_entry->oif, oif, sizeof(rt_entry->oif));
rt_entry->time_to_expire = RT_TABLE_EXP_TIME;
rt_entry->timer = setup_timer((*timer_cb), RT_TABLE_EXP_TIME*1000, 0, 0, (void*)rt_entry, false);
head = rt_table->head;
rt_table->head = rt_entry;
rt_entry->prev = 0;
rt_entry->next = head;
if (head)
head->prev = rt_entry;
start_timer(rt_entry->timer);
return true;
}
bool
rt_delete_rt_entry(rt_table_t* rt_table,
char* dest, char mask) {
rt_entry_t* rt_entry = NULL;
ITERTAE_RT_TABLE_BEGIN(rt_table, rt_entry) {
if (strncmp(rt_entry->rt_entry_keys.dest,
dest, sizeof(rt_entry->rt_entry_keys.dest)) == 0 &&
rt_entry->rt_entry_keys.mask == mask) {
rt_entry_remove(rt_table, rt_entry);
printf("deleting rt entry %p [%s:%d]\n",
rt_entry, rt_entry->rt_entry_keys.dest,
rt_entry->rt_entry_keys.mask);
free(rt_entry);
return true;
}
} ITERTAE_RT_TABLE_END(rt_table, curr);
return false;
}
bool
rt_update_rt_entry(rt_table_t* rt_table,
char* dest,
char mask,
char* new_gw_ip,
char* new_oif) {
return true;
}
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) {
rt_entry_t* rt_entry = NULL;
ITERTAE_RT_TABLE_BEGIN(rt_table, rt_entry) {
unsigned long time_in_milli_sec = timer_get_time_remaining_in_milli_sec(rt_entry->timer);
printf("%-20s %-4d %-20s %-12s %usec (%lu)\n",
rt_entry->rt_entry_keys.dest,
rt_entry->rt_entry_keys.mask,
rt_entry->gw_ip,
rt_entry->oif,
rt_entry->time_to_expire,
time_in_milli_sec);
} ITERTAE_RT_TABLE_END(rt_tabl, rt_entry);
}