along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: route.c,v 1.1.2.48 2003/03/29 21:58:35 guus Exp $
+ $Id: route.c,v 1.1.2.52 2003/07/06 17:15:25 guus Exp $
*/
#include "config.h"
#include "system.h"
+/* Missing definitions */
+
#ifndef ETHER_ADDR_LEN
#define ETHER_ADDR_LEN 6
#endif
+#ifndef ICMP_DEST_UNREACH
+#define ICMP_DEST_UNREACH 3
+#endif
+
+#ifndef ICMP_NET_UNKNOWN
+#define ICMP_NET_UNKNOWN 6
+#endif
+
+#ifndef ICMP_NET_UNREACH
+#define ICMP_NET_UNREACH 0
+#endif
+
int routing_mode = RMODE_ROUTER;
int priorityinheritance = 0;
int macexpire = 600;
-subnet_t mymac;
+int overwrite_mac = 0;
+mac_t mymac = {{0xFE, 0xFD, 0, 0, 0, 0}};
/* RFC 1071 */
uint16_t *p = data;
uint32_t checksum = prevsum ^ 0xFFFF;
- len /= 2;
-
- while(len--)
+ while(len >= 2) {
checksum += *p++;
+ len -= 2;
+ }
+
+ if(len)
+ checksum += *(unsigned char *)p;
while(checksum >> 16)
checksum = (checksum & 0xFFFF) + (checksum >> 16);
memcpy(&ip_dst, &hdr->ip_dst, 4);
oldlen = packet->len - 14;
- if(oldlen >= IP_MSS - sizeof(*hdr) - sizeof(struct icmphdr))
- oldlen = IP_MSS - sizeof(*hdr) - sizeof(struct icmphdr);
+ if(oldlen >= IP_MSS - sizeof(*hdr) - sizeof(*icmp))
+ oldlen = IP_MSS - sizeof(*hdr) - sizeof(*icmp);
/* Copy first part of original contents to ICMP message */
/* First, snatch the source address from the neighbor solicitation packet */
- memcpy(mymac.net.mac.address.x, packet->data + 6, 6);
+ if(overwrite_mac)
+ memcpy(mymac.x, packet->data + 6, 6);
/* Check if this is a valid neighbor solicitation request */
/* First, snatch the source address from the ARP packet */
- memcpy(mymac.net.mac.address.x, packet->data + 6, 6);
+ if(overwrite_mac)
+ memcpy(mymac.x, packet->data + 6, 6);
/* This routine generates replies to ARP requests.
You don't need to set NOARP flag on the interface anymore (which is broken on FreeBSD).
if(n) {
if(n == myself) {
- memcpy(packet->data, mymac.net.mac.address.x, 6);
+ if(overwrite_mac)
+ memcpy(packet->data, mymac.x, 6);
write_packet(packet);
} else
send_packet(n, packet);