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HAM Radio 1
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src0131
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enetdump.c
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C/C++ Source or Header
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1991-01-26
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967b
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54 lines
/* Ethernet header tracing routines
* Copyright 1991 Phil Karn, KA9Q
*/
#include <stdio.h>
#include "global.h"
#include "mbuf.h"
#include "enet.h"
#include "trace.h"
void
ether_dump(fp,bpp,check)
FILE *fp;
struct mbuf **bpp;
int check; /* Not used */
{
struct ether ehdr;
char s[20],d[20];
ntohether(&ehdr,bpp);
pether(s,ehdr.source);
pether(d,ehdr.dest);
fprintf(fp,"Ether: len %u %s->%s",ETHERLEN + len_p(*bpp),s,d);
switch(ehdr.type){
case IP_TYPE:
fprintf(fp," type IP\n");
ip_dump(fp,bpp,1);
break;
case REVARP_TYPE:
fprintf(fp," type REVARP\n");
arp_dump(fp,bpp);
break;
case ARP_TYPE:
fprintf(fp," type ARP\n");
arp_dump(fp,bpp);
break;
default:
fprintf(fp," type 0x%x\n",ehdr.type);
break;
}
}
int
ether_forus(iface,bp)
struct iface *iface;
struct mbuf *bp;
{
/* Just look at the multicast bit */
if(bp->data[0] & 1)
return 0;
else
return 1;
}