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Date: Wed, 16 Jun 1999 19:02:31 -0700 (PDT)
From: jrd@cc.usu.edu
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Subject: misc/12252: netstat fails to display TCP connectoins
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>Number:         12252
>Category:       misc
>Synopsis:       netstat fails to display TCP connectoins
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 16 19:10:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Joe R. Doupnik
>Release:        v3.2
>Organization:
Utah State University
>Environment:
FreeBSD netlab6.usu.edu 3.2-RELEASE FreeBSD 3.2-RELEASE #17: Wed Jun 16 16:50:45
 MDT 1999     root@netlab6.usu.edu:/usr/src/sys/compile/JRD  i386

>Description:
netstat shows UDP and Unix but not TCP connections. The problem is
the TCP protocol value is not set in the xt_socket structure
passed back to netstat routines. See horrid workaround below (one
line). The value returned in the structure looks rather like an
address or left over un-inited garbage.
>How-To-Repeat:
Type netstat with TCP connections active
>Fix:
My dirty but quick fix, to netstat/inet.c:

        oxig = xig = (struct xinpgen *)buf;
        for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
             xig->xig_len > sizeof(struct xinpgen);
             xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
                if (istcp) {
                        tp = &((struct xtcpcb *)xig)->xt_tp;
                        inp = &((struct xtcpcb *)xig)->xt_inp;
                        so = &((struct xtcpcb *)xig)->xt_socket;
/* JRD */
so->xso_protocol = proto;       /* correct uninited value */
/* JRD */
                } else {
                        inp = &((struct xinpcb *)xig)->xi_inp;
                        so = &((struct xinpcb *)xig)->xi_socket;
                }

                /* Ignore sockets for protocols other than the desired one. */
                if (so->xso_protocol != proto)
                        continue;



>Release-Note:
>Audit-Trail:
>Unformatted:


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