/* replicate packets for multiple-copying */
static void
replicate_packs(char *packet, int length, int replica_num)
{
int i;
uint16_t orig_port, addition, dest_port, rand_port;
uint32_t size_ip;
tc_tcp_header_t *tcp_header;
tc_ip_header_t *ip_header;
ip_header = (tc_ip_header_t *) packet;
size_ip = ip_header->ihl << 2;
tcp_header = (tc_tcp_header_t *) ((char *) ip_header + size_ip);
rand_port = clt_settings.rand_port_shifted;
orig_port = ntohs(tcp_header->source);
tc_log_debug1(LOG_DEBUG, 0, "orig port:%u", orig_port);
for (i = 1; i < replica_num; i++) {
addition = (((i << 1) - 1) << 5) + rand_port;
dest_port = get_appropriate_port(orig_port, addition);
tcp_header->source = htons(dest_port);
process_packet(true, packet, length);
tc_log_debug2(LOG_DEBUG, 0, "new port:%u,add:%u", dest_port, addition);
}
}
static void
replicate_packs(unsigned char *frame, int frame_len, int replica_num)
{
int i;
uint32_t size_ip;
uint16_t orig_port, addition, dest_port, rand_port;
unsigned char *packet;
tc_ip_header_t *ip_header;
tc_udp_header_t *udp_header;
packet = frame + ETHERNET_HDR_LEN;
ip_header = (tc_ip_header_t *) packet;
size_ip = ip_header->ihl << 2;
udp_header = (tc_udp_header_t *) ((char *) ip_header + size_ip);
orig_port = ntohs(udp_header->source);
tc_log_debug1(LOG_DEBUG, 0, "orig port:%u", orig_port);
rand_port = clt_settings.rand_port_shifted;
for (i = 1; i < replica_num; i++) {
addition = (((i << 1) - 1) << 5) + rand_port;
dest_port = get_appropriate_port(orig_port, addition);
tc_log_debug2(LOG_DEBUG, 0, "new port:%u,add:%u", dest_port, addition);
udp_header->source = htons(dest_port);
process_packet(true, frame, frame_len);
}
}