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More length-related fixes 

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@370 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-11-05 01:06:28 +00:00
parent c48d0935a1
commit 77119d8359
1 changed files with 6 additions and 5 deletions
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11
net/uip/uip-arp.c
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@ -287,10 +287,10 @@ void uip_arp_timer(void)
#if 0
void uip_arp_ipin(void)
{
dev->d_len -= sizeof(struct uip_eth_hdr);
/* Only insert/update an entry if the source IP address of the
incoming IP packet comes from a host on the local network. */
* incoming IP packet comes from a host on the local network.
*/
if ((IPBUF->eh_srcipaddr & dev->d_netmask) != (dev->d_ipaddr & dev->d_netmask))
{
return;
@ -324,7 +324,7 @@ void uip_arp_ipin(void)
void uip_arp_arpin(struct uip_driver_s *dev)
{
in_addr_t ipaddr;
if (dev->d_len < sizeof(struct arp_hdr))
if (dev->d_len < (sizeof(struct arp_hdr) + UIP_LLH_LEN))
{
dev->d_len = 0;
return;
@ -359,9 +359,10 @@ void uip_arp_arpin(struct uip_driver_s *dev)
ARPBUF->ah_dipaddr[1] = ARPBUF->ah_sipaddr[1];
ARPBUF->ah_sipaddr[0] = dev->d_ipaddr >> 16;
ARPBUF->ah_sipaddr[1] = dev->d_ipaddr & 0xffff;
uip_arp_dump(ARPBUF);
ETHBUF->type = HTONS(UIP_ETHTYPE_ARP);
dev->d_len = sizeof(struct arp_hdr);
dev->d_len = sizeof(struct arp_hdr) + UIP_LLH_LEN;
}
break;