'\" t
.\"     Title: function::tcpmib_filter_key
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: November 2020
.\"    Manual: SNMP Information Tapset
.\"    Source: SystemTap Tapset Reference
.\"  Language: English
.\"
.TH "FUNCTION::TCPMIB_FIL" "3stap" "November 2020" "SystemTap Tapset Reference" "SNMP Information Tapset"
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.SH "NAME"
function::tcpmib_filter_key \- Default filter function for tcpmib\&.* probes
.SH "SYNOPSIS"
.sp
.nf
    tcpmib_filter_key:long(sk:long,op:long)
.fi
.SH "ARGUMENTS"
.PP
\fIsk\fR
.RS 4
pointer to the struct sock being acted on
.RE
.PP
\fIop\fR
.RS 4
value to be counted if
\fIsk\fR
passes the filter
.RE
.SH "DESCRIPTION"
.PP
This function is a default filter function\&. The user can replace this function with their own\&. The user\-supplied filter function returns an index key based on the values in
\fIsk\fR\&. A return value of 0 means this particular
\fIsk\fR
should be not be counted\&.
.SH SEE ALSO\n 
.IR tapset::tcpmib-filter-default (3stap)