mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
901271e040
In previous commit, we changed the default emulated MTU for UDP bearers to 14k. This commit adds the functionality to set/change the default value by configuring new MTU for UDP media. UDP bearer(s) have to be disabled and enabled back for the new MTU to take effect. Acked-by: Ying Xue <ying.xue@windriver.com> Acked-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/*
|
|
* net/tipc/udp_media.h: Include file for UDP bearer media
|
|
*
|
|
* Copyright (c) 1996-2006, 2013-2016, Ericsson AB
|
|
* Copyright (c) 2005, 2010-2011, Wind River Systems
|
|
* 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 "AS IS"
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef CONFIG_TIPC_MEDIA_UDP
|
|
#ifndef _TIPC_UDP_MEDIA_H
|
|
#define _TIPC_UDP_MEDIA_H
|
|
|
|
#include <linux/ip.h>
|
|
#include <linux/udp.h>
|
|
|
|
int tipc_udp_nl_bearer_add(struct tipc_bearer *b, struct nlattr *attr);
|
|
int tipc_udp_nl_add_bearer_data(struct tipc_nl_msg *msg, struct tipc_bearer *b);
|
|
int tipc_udp_nl_dump_remoteip(struct sk_buff *skb, struct netlink_callback *cb);
|
|
|
|
/* check if configured MTU is too low for tipc headers */
|
|
static inline bool tipc_udp_mtu_bad(u32 mtu)
|
|
{
|
|
if (mtu >= (TIPC_MIN_BEARER_MTU + sizeof(struct iphdr) +
|
|
sizeof(struct udphdr)))
|
|
return false;
|
|
|
|
pr_warn("MTU too low for tipc bearer\n");
|
|
return true;
|
|
}
|
|
|
|
#endif
|
|
#endif
|