static void
send_packets_from_pcap(int first)
{
int l2_len, ip_pack_len, p_valid_flag = 0;
bool stop;
pcap_t *pcap;
unsigned char *pkt_data, *ip_data;
struct pcap_pkthdr pkt_hdr;
pcap = clt_settings.pcap;
if (pcap == NULL || read_pcap_over) {
return;
}
gettimeofday(&cur_time, NULL);
stop = check_read_stop();
while (!stop) {
pkt_data = (u_char *) pcap_next(pcap, &pkt_hdr);
if (pkt_data != NULL) {
if (pkt_hdr.caplen < pkt_hdr.len) {
tc_log_info(LOG_WARN, 0, "truncated packets,drop");
} else {
ip_data = get_ip_data(pkt_data, pkt_hdr.len, &l2_len);
if (ip_data != NULL) {
ip_pack_len = pkt_hdr.len - l2_len;
dispose_packet((char*)ip_data, ip_pack_len, &p_valid_flag);
if (p_valid_flag) {
tc_log_debug0(LOG_DEBUG, 0, "valid flag for packet");
if (first) {
first_pack_time = pkt_hdr.ts;
first = 0;
}
last_pack_time = pkt_hdr.ts;
} else {
stop = false;
tc_log_debug0(LOG_DEBUG, 0, "stop,invalid flag");
}
}
}
stop = check_read_stop();
} else {
tc_log_info(LOG_WARN, 0, "stop, null from pcap_next");
stop = true;
read_pcap_over = true;
}
}
}
static void
send_packets_from_pcap(int first)
{
int l2_len, ip_pack_len, p_valid_flag = 0;
bool stop;
pcap_t *pcap;
unsigned char *pkt_data, *frame, *ip_data;
struct pcap_pkthdr pkt_hdr;
pcap = clt_settings.pcap;
if (pcap == NULL || read_pcap_over) {
return;
}
gettimeofday(&cur_time, NULL);
stop = check_read_stop();
while (!stop) {
pkt_data = (u_char *) pcap_next(pcap, &pkt_hdr);
if (pkt_data != NULL) {
if (pkt_hdr.caplen < pkt_hdr.len) {
tc_log_info(LOG_WARN, 0, "truncated packets,drop");
} else {
ip_data = get_ip_data(clt_settings.pcap, pkt_data,
pkt_hdr.len, &l2_len);
if (l2_len < ETHERNET_HDR_LEN) {
tc_log_info(LOG_WARN, 0, "l2 len is %d", l2_len);
continue;
}
last_pack_time = pkt_hdr.ts;
if (ip_data != NULL) {
clt_settings.pcap_time = last_pack_time.tv_sec * 1000 +
last_pack_time.tv_usec / 1000;
ip_pack_len = pkt_hdr.len - l2_len;
tc_log_debug2(LOG_DEBUG, 0, "frame len:%d, ip len:%d",
pkt_hdr.len, ip_pack_len);
frame = ip_data - ETHERNET_HDR_LEN;
dispose_packet(frame, ip_pack_len + ETHERNET_HDR_LEN,
ip_pack_len, &p_valid_flag);
if (p_valid_flag) {
tc_log_debug0(LOG_DEBUG, 0, "valid flag for packet");
if (first) {
first_pack_time = pkt_hdr.ts;
first = 0;
} else {
adj_v_pack_diff = timeval_diff(&last_v_pack_time,
&last_pack_time);
}
/* set last valid packet time in pcap file */
last_v_pack_time = last_pack_time;
stop = check_read_stop();
} else {
tc_log_debug0(LOG_DEBUG, 0, "invalid flag");
}
}
}
} else {
tc_log_info(LOG_WARN, 0, "stop, null from pcap_next");
stop = true;
read_pcap_over = true;
}
}
}
