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

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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)