arp.h

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/*NB_REVISION*/
 
/*NB_COPYRIGHT*/
 
#ifndef _NB_ARP_H
#define _NB_ARP_H
 
#include <buffers.h>
#include <nettypes.h>
#include <stdio.h>
 
/*
 ******************************************************************************
 *
 * Runtime Libraries Routine Prototypes
 *
 ******************************************************************************
 */
 
void ShowArp();
 
void fShowArp(FILE *fp);
 
BOOL GetArpMacFromIp(IPADDR4 ip, MACADR &ma);
 
void sendGratuitousArp(int interfaceNumber, IPADDR4 ip);
 
/*INTERNAL FUNCTIONS */
void processArp(PoolPtr p, PEFRAME pF);
 
void AddCheckArp(MACADR *ma, IPADDR4 ip, int ifnum);
void DeleteArpFromIp(IPADDR4 ip);
 
void RouteOut(PEFRAME pf, IPADDR4 ip, PoolPtr p);
void RouteOutVia(PEFRAME pf, IPADDR4 ipfrom, IPADDR4 ipto, PoolPtr p, int intf);
 
void AgeArp();
void AddStaticArp(MACADR *ma, IPADDR4 ip, int ifnum);
 
void InitializeArp();
 
BOOL IsMyAddressUsedArpDetect(uint16_t timeout, int interface = 0);
 
int GetProperInterface4(IPADDR4 dst);
 
/*******************************************************************************
 *
 * Data Structures
 *
 *******************************************************************************/
 
/*******************************************************************************
 
   Address Resolution Protocol (ARP) Packet Structure
 
      hard_Type            - Hardware type (HTYPE)
      prot_Type            - Protocol type (PTYPE)
      hard_size            - Hardware length (HLEN)
 
         theMac            - Interface ethernet MAC address
   Notes:
      Should not change data sizes and always add to the end to avoid breaking
      use for interface configuration.
 
 *******************************************************************************/
typedef struct
{
    beuint16_t hard_Type;
    beuint16_t prot_Type;
    uint8_t hard_size;
    uint8_t prot_size;
    beuint16_t op_code;
    MACADR sender_phy;
    IPADDR4 sender_Ip;
    MACADR target_phy;
    IPADDR4 target_Ip;
} __attribute__((packed)) ARP;
 
typedef ARP *PARP;
 
#endif