Author: rscheff Date: Fri Oct 9 10:55:19 2020 New Revision: 366567 URL: https://svnweb.freebsd.org/changeset/base/366567
Log: Extend netstat to display TCP stack and detailed congestion state (2) Extend netstat to display TCP stack and detailed congestion state Adding the "-c" option used to show detailed per-connection congestion control state for TCP sessions. This is one summary patch, which adds the relevant variables into xtcpcb. As previous "spare" space is used, these changes are ABI compatible. Reviewed by: tuexen MFC after: 2 weeks Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D26518 Modified: head/sys/netinet/tcp_subr.c head/sys/netinet/tcp_var.h Modified: head/sys/netinet/tcp_subr.c ============================================================================== --- head/sys/netinet/tcp_subr.c Fri Oct 9 10:07:41 2020 (r366566) +++ head/sys/netinet/tcp_subr.c Fri Oct 9 10:55:19 2020 (r366567) @@ -3437,6 +3437,13 @@ tcp_inptoxtp(const struct inpcb *inp, struct xtcpcb *x xt->t_sndzerowin = tp->t_sndzerowin; xt->t_sndrexmitpack = tp->t_sndrexmitpack; xt->t_rcvoopack = tp->t_rcvoopack; + xt->t_rcv_wnd = tp->rcv_wnd; + xt->t_snd_wnd = tp->snd_wnd; + xt->t_snd_cwnd = tp->snd_cwnd; + xt->t_snd_ssthresh = tp->snd_ssthresh; + xt->t_maxseg = tp->t_maxseg; + xt->xt_ecn = (tp->t_flags2 & TF2_ECN_PERMIT) ? 1 : 0 + + (tp->t_flags2 & TF2_ACE_PERMIT) ? 2 : 0; now = getsbinuptime(); #define COPYTIMER(ttt) do { \ Modified: head/sys/netinet/tcp_var.h ============================================================================== --- head/sys/netinet/tcp_var.h Fri Oct 9 10:07:41 2020 (r366566) +++ head/sys/netinet/tcp_var.h Fri Oct 9 10:55:19 2020 (r366567) @@ -768,7 +768,13 @@ struct xtcpcb { int32_t tt_2msl; /* (s) */ int32_t tt_delack; /* (s) */ int32_t t_logstate; /* (3) */ - int32_t spare32[32]; + uint32_t t_snd_cwnd; /* (s) */ + uint32_t t_snd_ssthresh; /* (s) */ + uint32_t t_maxseg; /* (s) */ + uint32_t t_rcv_wnd; /* (s) */ + uint32_t t_snd_wnd; /* (s) */ + uint32_t xt_ecn; /* (s) */ + int32_t spare32[26]; } __aligned(8); #ifdef _KERNEL _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
