mirror of
https://github.com/Hizenberg469/MultiThreading_Part_A.git
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123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
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* =====================================================================================
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*
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* Filename: rt.h
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*
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* Description:
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*
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* Version: 1.0
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* Created: 10/03/24 12:47:20 PM IST
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* Revision: none
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* Compiler: gcc
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*
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* Author: YOUR NAME (),
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* Organization:
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*
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* =====================================================================================
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*/
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#ifndef __RT__
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#define __RT__
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#include <stdbool.h>
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#include "notif.h"
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typedef struct rt_entry_keys_{
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char dest[16];
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char mask;
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} rt_entry_keys_t;
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typedef struct rt_entry_{
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/* A Structure which represnets only the keys of the
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* Routing Table.*/
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rt_entry_keys_t rt_entry_keys;
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char gw_ip[16];
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char oif[32];
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bool created;
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struct rt_entry_ *prev;
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struct rt_entry_ *next;
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notif_chain_t *nfc;
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} rt_entry_t;
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typedef struct rt_table_{
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rt_entry_t *head;
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} rt_table_t;
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void
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rt_init_rt_table(rt_table_t *rt_table);
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rt_entry_t *
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rt_add_or_update_rt_entry(rt_table_t *rt_table,
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char *dest_ip, char mask, char *gw_ip, char *oif);
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bool
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rt_delete_rt_entry(rt_table_t *rt_table,
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char *dest_ip, char mask);
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bool
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rt_update_rt_entry(rt_table_t *rt_table,
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char *dest_ip, char mask,
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char *new_gw_ip, char *new_oif);
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rt_entry_t *
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rt_look_up_rt_entry(rt_table_t *rt_table,
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char *dest, char mask);
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void
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rt_clear_rt_table(rt_table_t *rt_table);
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void
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rt_free_rt_table(rt_table_t *rt_table);
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void
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rt_dump_rt_table(rt_table_t *rt_table);
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static inline void
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rt_entry_remove(rt_table_t *rt_table,
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rt_entry_t *rt_entry){
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if(!rt_entry->prev){
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if(rt_entry->next){
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rt_entry->next->prev = 0;
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rt_table->head = rt_entry->next;
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rt_entry->next = 0;
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return;
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}
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rt_table->head = 0;
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return;
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}
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if(!rt_entry->next){
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rt_entry->prev->next = 0;
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rt_entry->prev = 0;
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return;
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}
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rt_entry->prev->next = rt_entry->next;
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rt_entry->next->prev = rt_entry->prev;
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rt_entry->prev = 0;
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rt_entry->next = 0;
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}
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#define ITERTAE_RT_TABLE_BEGIN(rt_table_ptr, rt_entry_ptr) \
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{ \
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rt_entry_t *_next_rt_entry; \
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for((rt_entry_ptr) = (rt_table_ptr)->head; \
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(rt_entry_ptr); \
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(rt_entry_ptr) = _next_rt_entry) { \
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_next_rt_entry = (rt_entry_ptr)->next;
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#define ITERTAE_RT_TABLE_END(rt_table_ptr, rt_entry_ptr) }}
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void
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rt_table_register_for_notification(
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rt_table_t *rt_table,
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rt_entry_keys_t *key,
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size_t key_size,
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nfc_app_cb app_cb,
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uint32_t subs_id);
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#endif /* __RT__ */
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