[cadcdev-svn-commits] SF.net SVN: cadcdev: [351] kos/kernel/net/net_arp.c

[<ljs...@us...>]

Revision: 351
          http://svn.sourceforge.net/cadcdev/?rev=351&view=rev
Author:   ljsebald
Date:     2006-09-13 18:38:50 -0700 (Wed, 13 Sep 2006)

Log Message:
-----------
Adding in a minor fix to the ARP handling code so that if an incomplete entry is encountered in the lookup code, it returns failure, rather than silently returning an invalid mac address.

Modified Paths:
--------------
    kos/kernel/net/net_arp.c

Modified: kos/kernel/net/net_arp.c
===================================================================
--- kos/kernel/net/net_arp.c	2006-09-14 01:22:40 UTC (rev 350)
+++ kos/kernel/net/net_arp.c	2006-09-14 01:38:50 UTC (rev 351)
@@ -98,6 +98,12 @@
 	/* Look for the entry */
 	LIST_FOREACH(cur, &net_arp_cache, ac_list) {
 		if (!memcmp(ip_in, cur->ip, 4)) {
+			if(cur->mac[0] == 0 && cur->mac[1] == 0 && 
+			   cur->mac[2] == 0 && cur->mac[3] == 0 &&
+			   cur->mac[4] == 0 && cur->mac[5] == 0) {
+				return -1;
+			}
+
 			memcpy(mac_out, cur->mac, 6);
 			if (cur->timestamp != 0)
 				cur->timestamp = jiffies;


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