Bug 399413

Summary:	tcp_probe stops sending data to /proc/net/tcpprobe
Product:	Gentoo Linux	Reporter:	Aaron Rosen <aaronorosen>
Component:	[OLD] Unspecified	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED INVALID
Severity:	normal	CC:	aaronorosen
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Aaron Rosen 2012-01-19 18:31:36 UTC

I'm running  2.6.39-gentoo-r3 #6 SMP Tue Jan 10 15:19:58 EST 2012 x86_64 Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz GenuineIntel GNU/Linux. 

When I run  modprobe tcp_probe port=5001 and then cat out the debug info in /proc/net/tcpprobe the debug info stops being written long before the tcp connection terminates 

Reproducible: Always

Steps to Reproduce:
1. modprobe tcp_probe port=5001
2. cat /proc/net/tcpprobe 
3. iperf -s (on one box)
4. iperf -t 100 -c (to thatbox)



Expected Results:  
Results should continue to be print from cat /proc/net/tcpprobe until the tcp connection ends. 

Example how to of how to do this here: http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe

Comment 1 Aaron Rosen 2012-01-19 18:47:04 UTC

It seems like this does actually work though it can take an order of several seconds (15+) for all of the information to be streamed out of /proc to stdout.