13 Commits

Author SHA1 Message Date
gnn
d43d89d94d On FreeBSD there is a setsockopt option SO_USER_COOKIE which allows
setting a 32 bit value on each socket. This can be used by applications
and DTrace as a rendezvous point so that an applicaton's data can
more easily be captured at run time. Expose the user cookie via
DTrace by updating the translator in tcp.d and add a quick test
program, a TCP server, that sets the cookie on each connection
accepted.

Reviewed by:	hiren
MFC after:	1 week
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D7152
2016-07-08 23:44:09 +00:00
hiren
c3acce2380 Fix the 'type' for a few variables from tcpcb.
Reviewed by:		markj
Sponsored by:		Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D5973
2016-04-15 20:27:36 +00:00
gnn
d74d168b0f fix tcpdebug: - assign to "flags" in each probe, not only debug-input
compute "len" in the same way in each probe

Submitted by:	Hannes Mehnert
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D5524
2016-03-03 02:46:12 +00:00
gnn
e39dbc6166 dd DTrace probe points, translators and a corresponding script
to provide the TCPDEBUG functionality with pure DTrace.

Reviewed by:	rwatson
MFC after:	2 weeks
Sponsored by:	Limelight Networks
Differential Revision:	D3530
2015-09-13 15:50:55 +00:00
markj
4c6e75e399 - Use an explicit "depends_on module kernel" guard in DTrace libraries that
reference types defined in the kernel. Otherwise dtrace(1) expects to find
  CTF definitions for all referenced types, which is not very reasonable
  when it is being used in a build environment. This was previously worked
  around by adding "-x nolibs" to dtrace -h or -G invocations, but as of
  r283025, dtrace(1) actually handles dependencies properly, so this is no
  longer necessary.
- Remove "pragma ident" directives from DTrace libraries, as they're being
  phased out upstream as well.

Submitted by:	Krister Johansen <Krister.Johansen@isilon.com> [1]
MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division
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M    libdtrace/io.d
M    libdtrace/ip.d
M    libdtrace/nfs.d
M    libdtrace/nfssrv.d
M    libdtrace/psinfo.d
M    libdtrace/regs_x86.d
M    libdtrace/sched.d
M    libdtrace/siftr.d
M    libdtrace/tcp.d
M    libdtrace/udp.d
2015-08-07 19:56:22 +00:00
markj
452e5a702d Actually remove siftr-related definitions from tcp.d, missed in r283026. 2015-05-17 04:17:08 +00:00
gnn
08d35a248b Brief demo script showing the various values that can be read via
the new SIFTR statically defined tracepoint (SDT).

Differential Revision:	https://reviews.freebsd.org/D2387
Reviewed by:	bz, markj
2015-04-29 17:19:55 +00:00
markj
78d7824866 Correct the calculation of tcps_rto in the struct tcpcb -> tcpsinfo_t
translator.

Submitted by:	Grenville Armitage <garmitage@swin.edu.au>
MFC after:	1 week
2014-10-21 05:19:08 +00:00
gnn
0a28893572 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
MFC after:	2 weeks
2014-10-19 23:13:16 +00:00
markj
79fc9c4be0 Bind ip/tcp/udp provider translators and symbols to the same versions as in
illumos, rather than using "1.0" everywhere.

Some of the translators use D functions that are not present in version
1.0 (e.g. inet_ntoa()) which can result in libdtrace crashing when running
scripts that restrict themselves to version 1.0
(e.g. with "-x version=1.0").

MFC after:	1 week
2014-05-14 19:02:00 +00:00
markj
8ff2d52009 Add a separate translator for headers passed to the TCP probes in the
input path. These probes get some of the fields in host order, whereas the
output probes get them in network order, so a single translator isn't
enough. This workaround ensures that the problem is essentially invisble
to users: none of the probe arguments or their fields have changed.

Approved by:	re (hrs)
2013-10-02 17:14:12 +00:00
markj
37ef3ce41e Use the address of the inpcb rather than the tcpcb to identify TCP
connections. This keeps the tcp provider consistent with the other network
providers.

Approved by:	re (delphij)
2013-09-15 21:38:46 +00:00
markj
29e4661920 Implement the ip, tcp, and udp DTrace providers. The probe definitions use
dynamic translation so that their arguments match the definitions for
these providers in Solaris and illumos. Thus, existing scripts for these
providers should work unmodified on FreeBSD.

Tested by:	gnn, hiren
MFC after:	1 month
2013-08-25 21:54:41 +00:00