Better detection of when linux has retransmit info in tcp_info.
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@ -54,7 +54,12 @@ has_tcpinfo(void)
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int
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has_tcpinfo_retransmits(void)
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{
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#if defined(linux)
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#if defined(linux) && defined(TCP_MD5SIG)
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/* TCP_MD5SIG doesn't actually have anything to do with TCP
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** retransmits, it just showed up in the same rev of the header
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** file. If it's present then struct tcp_info has the
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** tcpi_total_retrans field that we need; if not, not.
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*/
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return 1;
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#else
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#if defined(__FreeBSD__) && __FreeBSD_version >= 600000
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@ -83,7 +88,7 @@ save_tcpinfo(struct iperf_stream *sp, struct iperf_interval_results *irp)
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long
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get_tcpinfo_total_retransmits(struct iperf_interval_results *irp)
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{
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#if defined(linux)
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#if defined(linux) && defined(TCP_MD5SIG)
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return irp->tcpInfo.tcpi_total_retrans;
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#else
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#if defined(__FreeBSD__) && __FreeBSD_version >= 600000
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