netdev - [PATCH] Fix tcp_hybla zero congestion window growth with small rho and large cwnd

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-next>] [day] [month] [year] [list]

Message-ID: <48E78D21.4020908@danielinux.net>
Date:	Sat, 04 Oct 2008 17:34:57 +0200
From:	Daniele Lacamera <root@...ielinux.net>
To:	netdev@...r.kernel.org
CC:	Carlo Caini <ccaini@...es.unibo.it>, rfirrincieli@...es.unibo.it
Subject: [PATCH] Fix tcp_hybla zero congestion window growth with small rho
 and large cwnd

Because of rounding, in certain conditions, i.e. when in congestion 
avoidance state rho is smaller than 1/128 of the current cwnd, TCP Hybla 
congestion control starves and the cwnd is kept constant forever.

This patch forces an increment by one segment after #send_cwnd calls
without increments(newreno behavior).

Please apply.

Signed-off-by: Daniele Lacamera <root@...ielinux.net>

View attachment "hybla_not_incrementing_cwnd.patch" of type "text/x-diff" (577 bytes)