Handle small file case with regards to plpmtud blackhole detection.
Submitted by: Mikhail <mp@lenta.ru> MFC after: 2 weeks Relnotes: yes
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=273063
@ -693,7 +693,15 @@ tcp_timer_rexmt(void * xtp)
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TCPT_RANGESET(tp->t_rxtcur, rexmt,
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tp->t_rttmin, TCPTV_REXMTMAX);
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if (V_tcp_pmtud_blackhole_detect && (tp->t_state == TCPS_ESTABLISHED)) {
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/*
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* We enter the path for PLMTUD if connection is established or, if
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* connection is FIN_WAIT_1 status, reason for the last is that if
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* amount of data we send is very small, we could send it in couple of
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* packets and process straight to FIN. In that case we won't catch
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* ESTABLISHED state.
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*/
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if (V_tcp_pmtud_blackhole_detect && (((tp->t_state == TCPS_ESTABLISHED))
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|| (tp->t_state == TCPS_FIN_WAIT_1))) {
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int optlen;
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#ifdef INET6
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int isipv6;
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