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Merged ARP fixes from STABLE. Should have made those fixes in HEAD first.

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likewise 2004-02-06 22:28:37 +00:00
parent 707d31a083
commit 7129d4797c
1 changed files with 11 additions and 12 deletions
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23
src/netif/etharp.c
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@ -521,6 +521,17 @@ etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr, struct pbuf *p)
for_us = ip_addr_cmp(&(hdr->dipaddr), &(netif->ip_addr));
}
/* add or update entries in the ARP cache */
if (for_us) {
/* insert IP address in ARP cache (assume requester wants to talk to us)
* we might even send out a queued packet to this host */
update_arp_entry(netif, &(hdr->sipaddr), &(hdr->shwaddr), ARP_INSERT_FLAG);
/* request was not directed to us, but snoop anyway */
} else {
/* update the source IP address in the cache */
update_arp_entry(netif, &(hdr->sipaddr), &(hdr->shwaddr), 0);
}
switch (htons(hdr->opcode)) {
/* ARP request? */
case ARP_REQUEST:
@ -579,18 +590,6 @@ etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr, struct pbuf *p)
LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE, ("etharp_arp_input: ARP unknown opcode type %d\n", htons(hdr->opcode)));
break;
}
/* add or update entries in the ARP cache */
if (for_us) {
/* insert IP address in ARP cache (assume requester wants to talk to us)
* we might even send out a queued packet to this host */
update_arp_entry(netif, &(hdr->sipaddr), &(hdr->shwaddr), ARP_INSERT_FLAG);
/* request was not directed to us, but snoop anyway */
} else {
/* update or insert the source IP address in the cache */
update_arp_entry(netif, &(hdr->sipaddr), &(hdr->shwaddr), 0);
/* update or insert the destination IP address pair in the cache */
update_arp_entry(netif, &(hdr->dipaddr), &(hdr->dhwaddr), 0);
}
/* free ARP packet */
pbuf_free(p);
p = NULL;