1 /* 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 25 * OF SUCH DAMAGE. 26 * 27 * This file is part of the lwIP TCP/IP stack. 28 * 29 * Author: Jani Monoses <jani@iv.ro> 30 * 31 */ 32 33 #ifndef __LWIP_IP_FRAG_H__ 34 #define __LWIP_IP_FRAG_H__ 35 36 #include "lwip/opt.h" 37 #include "lwip/err.h" 38 #include "lwip/pbuf.h" 39 #include "lwip/netif.h" 40 #include "lwip/ip_addr.h" 41 #include "lwip/ip.h" 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 #if IP_REASSEMBLY 48 /* The IP reassembly timer interval in milliseconds. */ 49 #define IP_TMR_INTERVAL 1000 50 51 /* IP reassembly helper struct. 52 * This is exported because memp needs to know the size. 53 */ 54 struct ip_reassdata { 55 struct ip_reassdata *next; 56 struct pbuf *p; 57 struct ip_hdr iphdr; 58 u16_t datagram_len; 59 u8_t flags; 60 u8_t timer; 61 }; 62 63 void ip_reass_init(void); 64 void ip_reass_tmr(void); 65 struct pbuf * ip_reass(struct pbuf *p); 66 #endif /* IP_REASSEMBLY */ 67 68 #if IP_FRAG 69 #if !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF 70 /** A custom pbuf that holds a reference to another pbuf, which is freed 71 * when this custom pbuf is freed. This is used to create a custom PBUF_REF 72 * that points into the original pbuf. */ 73 struct pbuf_custom_ref { 74 /** 'base class' */ 75 struct pbuf_custom pc; 76 /** pointer to the original pbuf that is referenced */ 77 struct pbuf *original; 78 }; 79 #endif /* !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF */ 80 81 err_t ip_frag(struct pbuf *p, struct netif *netif, ip_addr_t *dest); 82 #endif /* IP_FRAG */ 83 84 #ifdef __cplusplus 85 } 86 #endif 87 88 #endif /* __LWIP_IP_FRAG_H__ */ 89