'\" t
.\"     Title: sk_wait_data
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Linux Networking
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SK_WAIT_DATA" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Linux Networking"
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.SH "NAME"
sk_wait_data \- wait for data to arrive at sk_receive_queue
.SH "SYNOPSIS"
.HP \w'int\ sk_wait_data('u
.BI "int sk_wait_data(struct\ sock\ *\ " "sk" ", long\ *\ " "timeo" ", const\ struct\ sk_buff\ *\ " "skb" ");"
.SH "ARGUMENTS"
.PP
\fIsk\fR
.RS 4
sock to wait on
.RE
.PP
\fItimeo\fR
.RS 4
for how long
.RE
.PP
\fIskb\fR
.RS 4
last skb seen on sk_receive_queue
.RE
.SH "DESCRIPTION"
.PP
Now socket state including sk\->sk_err is changed only under lock, hence we may omit checks after joining wait queue\&. We check receive queue before
\fBschedule\fR
only as optimization; it is very likely that
\fBrelease_sock\fR
added new data\&.
.SH "COPYRIGHT"
.br