arpadd.c,v

关于ARP协议方面的。比较难的。。不过是源码

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1.1
date	97.09.21.19.22.42;	author dls;	state Dist;
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@Initial revision
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@/* arpadd.c - arpadd */

#include <conf.h>
#include <kernel.h>
#include <network.h>

struct	arpentry	*arpalloc();

/*------------------------------------------------------------------------
 * arpadd - Add a RESOLVED entry to the ARP cache
 * 	N.B. Assumes interrupts disabled
 *------------------------------------------------------------------------
 */
struct	arpentry *arpadd(pni, parp)
struct	netif	*pni;
struct	arp	*parp;
{
	struct	arpentry	*pae;

	pae = arpalloc();

	pae->ae_hwtype = parp->ar_hwtype;
	pae->ae_prtype = parp->ar_prtype;
	pae->ae_hwlen = parp->ar_hwlen;
	pae->ae_prlen = parp->ar_prlen;
	pae->ae_pni = pni;
	pae->ae_queue = EMPTY;
	blkcopy(pae->ae_hwa, SHA(parp), parp->ar_hwlen);
	blkcopy(pae->ae_pra, SPA(parp), parp->ar_prlen);
	pae->ae_ttl = ARP_TIMEOUT;
	pae->ae_state = AS_RESOLVED;
	return pae;
}
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