[pisa-src] r2517 - trunk/tools/dhcp/mac2ip.c
- From: Christoph Viethen <christoph.viethen@xxxxxxxxxxxxxx>
- To: pisa-src@xxxxxxxxxxxxx
- Date: Tue, 5 Apr 2011 02:56:01 +0200
Author: viethen
Date: Tue Apr 5 02:56:01 2011
New Revision: 2517
Log:
clean up / clarify the comments a little; add one
Modified:
trunk/tools/dhcp/mac2ip.c
Modified: trunk/tools/dhcp/mac2ip.c
==============================================================================
--- trunk/tools/dhcp/mac2ip.c Tue Apr 5 02:37:39 2011 (r2516)
+++ trunk/tools/dhcp/mac2ip.c Tue Apr 5 02:56:01 2011 (r2517)
@@ -1,7 +1,7 @@
/**
- * This Code calculates IPv4s based on Ethernet-addresses
+ * This code calculates IPv4s based on Ethernet addresses
*
- * Author: Max Gelmroth
+ * Original author: Max Gelmroth
*
*/
@@ -74,7 +74,8 @@
ip->x[0] = hash & 0x000000ff;
}
-/* converts mac in hex_string_format to mac_t */
+/* converts IPv4 address in the common dotted-quad notation to ipv4_t */
+/* returns -1 in case s.th. goes wrong, otherwise 0 */
static int string_to_ipv4_t(const char *string, mac2ip_ipv4_t *ip)
{
if (sscanf(string, "%" SCNu8 ".%" SCNu8 ".%" SCNu8 ".%" SCNu8, &ip->x[0],
&ip->x[1], &ip->x[2], &ip->x[3]) == 4) {
@@ -259,7 +260,8 @@
{
ip_bounds bounds;
-
+ /* call the hash function that will return an IP address
+ * somewhere out of the space of all IPv4 addresses */
hash_mac_to_rnd_ip_OAAT(mac, ip);
/* we want to read at least 4 IPs */
--
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