linux/net/tipc/trace.c

/*
 * net/tipc/trace.c: TIPC tracepoints code
 *
 * Copyright (c) 2018, Ericsson AB
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#define CREATE_TRACE_POINTS
#include "trace.h"

/*
 * socket tuples for filtering in socket traces:
 * (portid, sock type, name type, name lower, name upper)
 */
unsigned long sysctl_tipc_sk_filter[5] __read_mostly = …;

/**
 * tipc_skb_dump - dump TIPC skb data
 * @skb: skb to be dumped
 * @more: dump more?
 *        - false: dump only tipc msg data
 *        - true: dump kernel-related skb data and tipc cb[] array as well
 * @buf: returned buffer of dump data in format
 */
int tipc_skb_dump(struct sk_buff *skb, bool more, char *buf)
{ … }

/**
 * tipc_list_dump - dump TIPC skb list/queue
 * @list: list of skbs to be dumped
 * @more: dump more?
 *        - false: dump only the head & tail skbs
 *        - true: dump the first & last 5 skbs
 * @buf: returned buffer of dump data in format
 */
int tipc_list_dump(struct sk_buff_head *list, bool more, char *buf)
{ … }