svn commit: r282701 - stable/10/cddl/lib/libdtrace

[George V. Neville-Neil]

Author: gnn
Date: Sat May  9 22:59:11 2015
New Revision: 282701
URL: https://svnweb.freebsd.org/changeset/base/282701

Log:
  MFC: 273293
  
  Update the TCP structure used by DTrace to show the smoothed RTT.
  This will allow similar functionality to SIFTR to be built with DTrace.
  
  Submitted by:	Grenville Armitage

Modified:
  stable/10/cddl/lib/libdtrace/tcp.d
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/cddl/lib/libdtrace/tcp.d
==============================================================================
--- stable/10/cddl/lib/libdtrace/tcp.d	Sat May  9 22:48:48 2015	(r282700)
+++ stable/10/cddl/lib/libdtrace/tcp.d	Sat May  9 22:59:11 2015	(r282701)
@@ -116,6 +116,7 @@ typedef struct tcpsinfo {
 	uint32_t tcps_rto;		/* round-trip timeout, msec */
 	uint32_t tcps_mss;		/* max segment size */
 	int tcps_retransmit;		/* retransmit send event, boolean */
+	int tcps_srtt;                  /* smoothed RTT in units of (TCP_RTT_SCALE*hz) */
 } tcpsinfo_t;
 
 /*
@@ -200,6 +201,7 @@ translator tcpsinfo_t < struct tcpcb *p 
 	tcps_rto =		p == NULL ? -1 : (p->t_rxtcur * 1000) / `hz;
 	tcps_mss =		p == NULL ? -1  : p->t_maxseg;
 	tcps_retransmit =	p == NULL ? -1 : p->t_rxtshift > 0 ? 1 : 0;
+	tcps_srtt =             p == NULL ? -1  : p->t_srtt;   /* smoothed RTT in units of (TCP_RTT_SCALE*hz) */
 };
 
 #pragma D binding "1.0" translator