Marco Zecchini
/
Example_RTOS
Rtos API example
Embed:
(wiki syntax)
Show/hide line numbers
ip4_frag.h
Go to the documentation of this file.
00001 /** 00002 * @file 00003 * IP fragmentation/reassembly 00004 */ 00005 00006 /* 00007 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 00008 * All rights reserved. 00009 * 00010 * Redistribution and use in source and binary forms, with or without modification, 00011 * are permitted provided that the following conditions are met: 00012 * 00013 * 1. Redistributions of source code must retain the above copyright notice, 00014 * this list of conditions and the following disclaimer. 00015 * 2. Redistributions in binary form must reproduce the above copyright notice, 00016 * this list of conditions and the following disclaimer in the documentation 00017 * and/or other materials provided with the distribution. 00018 * 3. The name of the author may not be used to endorse or promote products 00019 * derived from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00022 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00023 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00024 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00025 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00026 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00027 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00028 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00029 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00030 * OF SUCH DAMAGE. 00031 * 00032 * This file is part of the lwIP TCP/IP stack. 00033 * 00034 * Author: Jani Monoses <jani@iv.ro> 00035 * 00036 */ 00037 00038 #ifndef LWIP_HDR_IP4_FRAG_H 00039 #define LWIP_HDR_IP4_FRAG_H 00040 00041 #include "lwip/opt.h" 00042 #include "lwip/err.h" 00043 #include "lwip/pbuf.h" 00044 #include "lwip/netif.h" 00045 #include "lwip/ip_addr.h" 00046 #include "lwip/ip.h" 00047 00048 #if LWIP_IPV4 00049 00050 #ifdef __cplusplus 00051 extern "C" { 00052 #endif 00053 00054 #if IP_REASSEMBLY 00055 /* The IP reassembly timer interval in milliseconds. */ 00056 #define IP_TMR_INTERVAL 1000 00057 00058 /** IP reassembly helper struct. 00059 * This is exported because memp needs to know the size. 00060 */ 00061 struct ip_reassdata { 00062 struct ip_reassdata *next; 00063 struct pbuf *p; 00064 struct ip_hdr iphdr; 00065 u16_t datagram_len; 00066 u8_t flags; 00067 u8_t timer; 00068 }; 00069 00070 void ip_reass_init(void); 00071 void ip_reass_tmr(void); 00072 struct pbuf * ip4_reass(struct pbuf *p); 00073 #endif /* IP_REASSEMBLY */ 00074 00075 #if IP_FRAG 00076 #if !LWIP_NETIF_TX_SINGLE_PBUF 00077 #ifndef LWIP_PBUF_CUSTOM_REF_DEFINED 00078 #define LWIP_PBUF_CUSTOM_REF_DEFINED 00079 /** A custom pbuf that holds a reference to another pbuf, which is freed 00080 * when this custom pbuf is freed. This is used to create a custom PBUF_REF 00081 * that points into the original pbuf. */ 00082 struct pbuf_custom_ref { 00083 /** 'base class' */ 00084 struct pbuf_custom pc; 00085 /** pointer to the original pbuf that is referenced */ 00086 struct pbuf *original; 00087 }; 00088 #endif /* LWIP_PBUF_CUSTOM_REF_DEFINED */ 00089 #endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ 00090 00091 err_t ip4_frag(struct pbuf *p, struct netif *netif, const ip4_addr_t *dest); 00092 #endif /* IP_FRAG */ 00093 00094 #ifdef __cplusplus 00095 } 00096 #endif 00097 00098 #endif /* LWIP_IPV4 */ 00099 00100 #endif /* LWIP_HDR_IP4_FRAG_H */
Generated on Sun Jul 17 2022 08:25:23 by 1.7.2