netdev - Re: [Bugme-new] [Bug 18952] New: The mount of SYN retries is not equal to /proc/sys/net/ipv4/tcp_syn

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]

Message-Id: <20100924.200557.229751150.davem@davemloft.net>
Date:	Fri, 24 Sep 2010 20:05:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	akpm@...ux-foundation.org
Cc:	netdev@...r.kernel.org, bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, yuri@...nteg.net
Subject: Re: [Bugme-new] [Bug 18952] New: The mount of SYN retries is not
 equal to /proc/sys/net/ipv4/tcp_syn_retries

tcp_syn_retries is not an exact calculation.

It is input into a calculation which estimates how long that many
retransmits (with suitable backoff applied) will take, and that time
estimte in turn determines the time limit for when we'll kill the
connection attempt.

Feel free to update the documentation in
Documentation/networking/ip-sysctl.txt to more closely match the
behavior.

The logic is in net/ipv4/tcp_timer.c:retransmits_timed_out().
--
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