1*10465441SEvalZero /** 2*10465441SEvalZero * NAT - NAT implementation for lwIP supporting TCP/UDP and ICMP. 3*10465441SEvalZero * Copyright (c) 2009 Christian Walter, ?Embedded Solutions, Vienna 2009. 4*10465441SEvalZero * Copyright (c) 2010 lwIP project ;-) 5*10465441SEvalZero * COPYRIGHT (C) 2015, RT-Thread Development Team 6*10465441SEvalZero * All rights reserved. 7*10465441SEvalZero * 8*10465441SEvalZero * Redistribution and use in source and binary forms, with or without modification, 9*10465441SEvalZero * are permitted provided that the following conditions are met: 10*10465441SEvalZero * 11*10465441SEvalZero * 1. Redistributions of source code must retain the above copyright notice, 12*10465441SEvalZero * this list of conditions and the following disclaimer. 13*10465441SEvalZero * 2. Redistributions in binary form must reproduce the above copyright notice, 14*10465441SEvalZero * this list of conditions and the following disclaimer in the documentation 15*10465441SEvalZero * and/or other materials provided with the distribution. 16*10465441SEvalZero * 3. The name of the author may not be used to endorse or promote products 17*10465441SEvalZero * derived from this software without specific prior written permission. 18*10465441SEvalZero * 19*10465441SEvalZero * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 20*10465441SEvalZero * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 21*10465441SEvalZero * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 22*10465441SEvalZero * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23*10465441SEvalZero * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 24*10465441SEvalZero * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25*10465441SEvalZero * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26*10465441SEvalZero * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27*10465441SEvalZero * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 28*10465441SEvalZero * OF SUCH DAMAGE. 29*10465441SEvalZero * 30*10465441SEvalZero * Change Logs: 31*10465441SEvalZero * Date Author Notes 32*10465441SEvalZero * 2015-01-26 Hichard porting to RT-Thread 33*10465441SEvalZero * 2015-01-27 Bernard code cleanup for lwIP in RT-Thread 34*10465441SEvalZero */ 35*10465441SEvalZero 36*10465441SEvalZero #ifndef __LWIP_NAT_H__ 37*10465441SEvalZero #define __LWIP_NAT_H__ 38*10465441SEvalZero 39*10465441SEvalZero #include <rtthread.h> 40*10465441SEvalZero 41*10465441SEvalZero #ifdef LWIP_USING_NAT 42*10465441SEvalZero 43*10465441SEvalZero #include "lwip/err.h" 44*10465441SEvalZero #include "lwip/ip_addr.h" 45*10465441SEvalZero #include "lwip/opt.h" 46*10465441SEvalZero 47*10465441SEvalZero /** Timer interval at which to call ip_nat_tmr() */ 48*10465441SEvalZero #define LWIP_NAT_TMR_INTERVAL_SEC (30) 49*10465441SEvalZero 50*10465441SEvalZero #ifdef __cplusplus 51*10465441SEvalZero extern "C" { 52*10465441SEvalZero #endif /* __cplusplus */ 53*10465441SEvalZero 54*10465441SEvalZero struct netif; 55*10465441SEvalZero struct pbuf; 56*10465441SEvalZero 57*10465441SEvalZero typedef struct ip_nat_entry 58*10465441SEvalZero { 59*10465441SEvalZero ip_addr_t source_net; 60*10465441SEvalZero ip_addr_t source_netmask; 61*10465441SEvalZero ip_addr_t dest_net; 62*10465441SEvalZero ip_addr_t dest_netmask; 63*10465441SEvalZero struct netif *out_if; 64*10465441SEvalZero struct netif *in_if; 65*10465441SEvalZero } ip_nat_entry_t; 66*10465441SEvalZero 67*10465441SEvalZero void ip_nat_init(void); 68*10465441SEvalZero void ip_nat_tmr(void); 69*10465441SEvalZero u8_t ip_nat_input(struct pbuf *p); 70*10465441SEvalZero u8_t ip_nat_out(struct pbuf *p); 71*10465441SEvalZero 72*10465441SEvalZero err_t ip_nat_add(const ip_nat_entry_t *new_entry); 73*10465441SEvalZero void ip_nat_remove(const ip_nat_entry_t *remove_entry); 74*10465441SEvalZero 75*10465441SEvalZero #ifdef __cplusplus 76*10465441SEvalZero } 77*10465441SEvalZero #endif /* __cplusplus */ 78*10465441SEvalZero 79*10465441SEvalZero #endif /* IP_NAT */ 80*10465441SEvalZero 81*10465441SEvalZero #endif /* __LWIP_NAT_H__ */ 82