source: UsbWattMeter/trunk/lwip-1.4.1/src/include/ipv4/lwip/ip_frag.h

Last change on this file was 167, checked in by coas-nagasima, 6 years ago

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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
44extern "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 */
54struct 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
63void ip_reass_init(void);
64void ip_reass_tmr(void);
65struct 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. */
73struct 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
81err_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__ */
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