/* Fills the given _fg_tcp_info with the values of the OS specific tcp_info,
* returns 0 on success */
int get_tcp_info(struct _flow *flow, struct _fg_tcp_info *info)
{
#if (defined __LINUX__ || defined __FreeBSD__)
struct tcp_info tmp_info;
socklen_t info_len = sizeof(tmp_info);
int rc;
memset(info, 0, sizeof(struct _fg_tcp_info));
rc = getsockopt(flow->fd, IPPROTO_TCP, TCP_INFO, &tmp_info, &info_len);
if (rc == -1) {
warn("getsockopt() failed");
return -1;
}
#define CPY_INFO_MEMBER(a) info->a = (int) tmp_info.a;
CPY_INFO_MEMBER(tcpi_snd_cwnd);
CPY_INFO_MEMBER(tcpi_snd_ssthresh);
CPY_INFO_MEMBER(tcpi_rtt);
CPY_INFO_MEMBER(tcpi_rttvar);
CPY_INFO_MEMBER(tcpi_rto);
CPY_INFO_MEMBER(tcpi_snd_mss);
/* FreeBSD 9.1 doesn't fill these members */
#ifdef __LINUX__
CPY_INFO_MEMBER(tcpi_backoff);
CPY_INFO_MEMBER(tcpi_unacked);
CPY_INFO_MEMBER(tcpi_sacked);
CPY_INFO_MEMBER(tcpi_retrans);
CPY_INFO_MEMBER(tcpi_retransmits);
CPY_INFO_MEMBER(tcpi_fackets);
CPY_INFO_MEMBER(tcpi_reordering);
#endif
#else
memset(info, 0, sizeof(_fg_tcp_info);
#endif
return 0;
}
/* Fills the given _fg_tcp_info with the values of the OS specific tcp_info,
* returns 0 on success */
int get_tcp_info(struct flow *flow, struct fg_tcp_info *info)
{
#ifdef HAVE_TCP_INFO
struct tcp_info tmp_info;
socklen_t info_len = sizeof(tmp_info);
int rc;
memset(info, 0, sizeof(struct fg_tcp_info));
rc = getsockopt(flow->fd, IPPROTO_TCP, TCP_INFO, &tmp_info, &info_len);
if (rc == -1) {
warn("getsockopt() failed");
return -1;
}
#define CPY_INFO_MEMBER(a) info->a = (int) tmp_info.a;
CPY_INFO_MEMBER(tcpi_snd_cwnd);
CPY_INFO_MEMBER(tcpi_snd_ssthresh);
CPY_INFO_MEMBER(tcpi_rtt);
CPY_INFO_MEMBER(tcpi_rttvar);
CPY_INFO_MEMBER(tcpi_rto);
CPY_INFO_MEMBER(tcpi_snd_mss);
/* TODO FreeBSD 9.1 doesn't fill these members, but maybe FreeBSD 10.0
* will fill it, so get rid of this ifdef */
#ifdef __LINUX__
CPY_INFO_MEMBER(tcpi_backoff);
CPY_INFO_MEMBER(tcpi_unacked);
CPY_INFO_MEMBER(tcpi_sacked);
CPY_INFO_MEMBER(tcpi_lost);
CPY_INFO_MEMBER(tcpi_retrans);
CPY_INFO_MEMBER(tcpi_retransmits);
CPY_INFO_MEMBER(tcpi_fackets);
CPY_INFO_MEMBER(tcpi_reordering);
CPY_INFO_MEMBER(tcpi_ca_state);
#endif /* __LINUX__ */
#else /* HAVE_TCP_INFO */
UNUSED_ARGUMENT(flow);
memset(info, 0, sizeof(struct fg_tcp_info));
#endif /* HAVE_TCP_INFO */
return 0;
}
