lkml.org 
[lkml]   [2006]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectTCP fast retransmit/recovery
Hi,

About TCP fast retransmit/recovery, it is described in RFC 2581:

1) When the third duplicate ACK is received, set ssthresh to no more
than the value max(FlightSize/2, 2*SMSS).

2) Retransmit the lost segment and set cwnd to ssthresh plus 3*SMSS.

However, in kernel 2.4.31 (or 2.6.15), cwnd is always set to 1 (in
tcp_enter_loss()), even there is only one packet is drop.

Does anyone know the reason?

Regards,

--
Zongsheng Zhang
zhang@ist.osaka-u.ac.jp
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-01-25 12:13    [W:3.901 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site