// L2TPNS: icmp
-char const *cvs_id_icmp = "$Id: icmp.c,v 1.4 2004/11/15 02:26:20 bodea Exp $";
+char const *cvs_id_icmp = "$Id: icmp.c,v 1.6 2004/12/16 08:49:53 bodea Exp $";
#include <arpa/inet.h>
#include <netdb.h>
#include "l2tpns.h"
-__u16 _checksum(unsigned char *addr, int count);
+static uint16_t _checksum(unsigned char *addr, int count);
-void host_unreachable(ipt destination, u16 id, ipt source, char *packet, int packet_len)
+void host_unreachable(in_addr_t destination, uint16_t id, in_addr_t source, char *packet, int packet_len)
{
char buf[128] = {0};
struct iphdr *iph;
icmp->type = ICMP_DEST_UNREACH;
icmp->code = ICMP_HOST_UNREACH;
- icmp->checksum = _checksum((char *)icmp, sizeof(struct icmphdr) + ((packet_len < 64) ? packet_len : 64));
+ icmp->checksum = _checksum((char *) icmp, sizeof(struct icmphdr) + ((packet_len < 64) ? packet_len : 64));
- iph->check = _checksum((char *)iph, sizeof(struct iphdr));
+ iph->check = _checksum((char *) iph, sizeof(struct iphdr));
sendto(icmp_socket, (char *)buf, len, 0, (struct sockaddr *)&whereto, sizeof(struct sockaddr));
close(icmp_socket);
}
-__u16 _checksum(unsigned char *addr, int count)
+static uint16_t _checksum(unsigned char *addr, int count)
{
register long sum = 0;
for (; count > 1; count -= 2)
{
- sum += ntohs(*(u32 *)addr);
+ sum += ntohs(*(uint32_t *) addr);
addr += 2;
}
// one's complement the result
sum = ~sum;
- return htons((u16) sum);
+ return htons((uint16_t) sum);
}