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Filename : tcpmib-filter-default.stp
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/*
 *      Copyright (C) 2009 IBM Corp.
 *      Copyright (C) 2010 Red Hat Inc.
 *
 *      This file is part of systemtap, and is free software.  You can
 *      redistribute it and/or modify it under the terms of the GNU General
 *      Public License (GPL); either version 2, or (at your option) any
 *      later version.
 */

/**
 * sfunction tcpmib_filter_key - Default filter function for tcpmib.* probes
 *
 * @sk: pointer to the struct sock being acted on
 * @op: value to be counted if @sk passes the filter
 *
 * 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 @sk.
 * A return value of 0 means this particular @sk should be not be counted.
 */
function tcpmib_filter_key:long (sk:long, op:long)
{
       if (!sk) return 0
       return 1
}