'\" t
.\"     Title: xprt_adjust_cwnd
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: June 2017
.\"    Manual: Linux Networking
.\"    Source: Kernel Hackers Manual 4.11.3
.\"  Language: English
.\"
.TH "XPRT_ADJUST_CWND" "9" "June 2017" "Kernel Hackers Manual 4\&.11\&" "Linux Networking"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
xprt_adjust_cwnd \- adjust transport congestion window
.SH "SYNOPSIS"
.HP \w'void\ xprt_adjust_cwnd('u
.BI "void xprt_adjust_cwnd(struct\ rpc_xprt\ *\ " "xprt" ", struct\ rpc_task\ *\ " "task" ", int\ " "result" ");"
.SH "ARGUMENTS"
.PP
\fIstruct rpc_xprt * xprt\fR
.RS 4
pointer to xprt
.RE
.PP
\fIstruct rpc_task * task\fR
.RS 4
recently completed RPC request used to adjust window
.RE
.PP
\fIint result\fR
.RS 4
result code of completed RPC request
.RE
.SH "DESCRIPTION"
.PP
The transport code maintains an estimate on the maximum number of out\- standing RPC requests, using a smoothed version of the congestion avoidance implemented in 44BSD\&. This is basically the Van Jacobson congestion algorithm: If a retransmit occurs, the congestion window is halved; otherwise, it is incremented by 1/cwnd when
.PP
\- a reply is received and \- a full number of requests are outstanding and \- the congestion window hasn\*(Aqt been updated recently\&.
.SH "COPYRIGHT"
.br