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Fix to last fix for bug 2826: find_arp_entry() was now not finding any

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entries unless there was an attached buffer. Fixed so that it finds entries
without attached buffer.

Also: Now attaching buffer to arp queue before sending arp request. For
Coldfire, where ethernet receive is done under interrupts arp response was
received before buffer was attached, thus causing attached frame to never get
transmitted.
This commit is contained in:
davidhaas 2003-03-18 14:48:40 +00:00
parent 2673568cfd
commit f9f21934ab
1 changed files with 13 additions and 13 deletions
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26
src/netif/etharp.c
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@ -202,7 +202,7 @@ find_arp_entry(void)
/* remember entry with oldest stable entry in j*/
if((arp_table[i].state == ETHARP_STATE_STABLE) &&
#if ARP_QUEUEING /* do not want to re-use an entry with queued packets */
(arp_table[i].p != NULL) &&
(arp_table[i].p == NULL) &&
#endif
(arp_table[i].ctime >= maxtime)) {
maxtime = arp_table[i].ctime;
@ -682,6 +682,18 @@ struct pbuf *etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pb
arp_table[i].p = NULL;
#endif
}
#if ARP_QUEUEING
/* any pbuf to queue and queue is empty? */
if ((q != NULL) && (arp_table[i].p == NULL)) {
/* copy PBUF_REF referenced payloads to PBUF_RAM */
q = pbuf_unref(q);
/* pbufs are queued, increase the reference count */
pbuf_ref_chain(q);
/* remember pbuf to queue, if any */
arp_table[i].p = q;
DEBUGF(ETHARP_DEBUG, ("etharp_query: queued packet on ARP entry.\n"));
}
#endif
/* allocate a pbuf for the outgoing ARP request packet */
p = pbuf_alloc(PBUF_LINK, sizeof(struct etharp_hdr), PBUF_RAM);
/* could allocate pbuf? */
@ -717,17 +729,5 @@ struct pbuf *etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pb
} else {
DEBUGF(ETHARP_DEBUG, ("etharp_query: could not allocate pbuf for ARP request.\n"));
}
#if ARP_QUEUEING
/* any pbuf to queue and queue is empty? */
if ((q != NULL) && (arp_table[i].p == NULL)) {
/* copy PBUF_REF referenced payloads to PBUF_RAM */
q = pbuf_unref(q);
/* pbufs are queued, increase the reference count */
pbuf_ref_chain(q);
/* remember pbuf to queue, if any */
arp_table[i].p = q;
DEBUGF(ETHARP_DEBUG, ("etharp_query: queued packet on ARP entry.\n"));
}
#endif
return NULL;
}