netdev - Re: Detecting TCP loss on the receiving side?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 10 Jul 2008 13:11:28 -0700
From:	Rick Jones <rick.jones2@...com>
To:	Dan Noé <dnoe@...ebrokerage.com>
CC:	netdev@...r.kernel.org
Subject: Re: Detecting TCP loss on the receiving side?

Dan Noé wrote:
> We're trying to troubleshoot some problems and we'd like to use the 
> struct tcp_info method to gain some information and attempt to detect 
> TCP loss events on the receiving side of a TCP stream.  The problem is 
> struct tcp_info is not well documented and my attempts to trace it seem 
> to reveal that most of the statistics are relevant to the sending side 
> of a TCP connection.
> 
> Are there any fields (or any other way) to easily detect loss events? 
> We're mostly concerned with detecting when TCP loss or reordering delays 
> things resulting in additional latency.

If this is just for troubleshooting, why not just take a tcpdump trace?

rick jones
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html