| /* |
| * 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 |