104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/**
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* NAT - NAT implementation for lwIP supporting TCP/UDP and ICMP.
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* Copyright (c) 2009 Christian Walter, ?Embedded Solutions, Vienna 2009.
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*
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* Copyright (c) 2010 lwIP project ;-)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*/
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/*
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* File : ipv4_nat.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2015, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2015-01-26 Hichard porting to RT-Thread
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* 2015-01-27 Bernard code cleanup for lwIP in RT-Thread
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*/
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#ifndef __LWIP_NAT_H__
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#define __LWIP_NAT_H__
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#include <rtthread.h>
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#ifdef LWIP_USING_NAT
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#include "lwip/err.h"
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#include "lwip/ip_addr.h"
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#include "lwip/opt.h"
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/** Timer interval at which to call ip_nat_tmr() */
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#define LWIP_NAT_TMR_INTERVAL_SEC (30)
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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struct netif;
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struct pbuf;
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typedef struct ip_nat_entry
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{
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ip_addr_t source_net;
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ip_addr_t source_netmask;
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ip_addr_t dest_net;
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ip_addr_t dest_netmask;
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struct netif *out_if;
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struct netif *in_if;
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} ip_nat_entry_t;
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void ip_nat_init(void);
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void ip_nat_tmr(void);
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u8_t ip_nat_input(struct pbuf *p);
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u8_t ip_nat_out(struct pbuf *p);
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err_t ip_nat_add(const ip_nat_entry_t *new_entry);
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void ip_nat_remove(const ip_nat_entry_t *remove_entry);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* IP_NAT */
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#endif /* __LWIP_NAT_H__ */
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