BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
2 | * @file |
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3 | * IP fragmentation/reassembly |
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4 | */ |
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5 | |||
6 | /* |
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7 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
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8 | * All rights reserved. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without modification, |
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11 | * are permitted provided that the following conditions are met: |
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12 | * |
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13 | * 1. Redistributions of source code must retain the above copyright notice, |
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14 | * this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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16 | * this list of conditions and the following disclaimer in the documentation |
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17 | * and/or other materials provided with the distribution. |
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18 | * 3. The name of the author may not be used to endorse or promote products |
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19 | * derived from this software without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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30 | * OF SUCH DAMAGE. |
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31 | * |
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32 | * This file is part of the lwIP TCP/IP stack. |
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33 | * |
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34 | * Author: Jani Monoses <jani@iv.ro> |
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35 | * |
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36 | */ |
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37 | |||
38 | #ifndef LWIP_HDR_IP4_FRAG_H |
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39 | #define LWIP_HDR_IP4_FRAG_H |
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40 | |||
41 | #include "lwip/opt.h" |
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42 | #include "lwip/err.h" |
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43 | #include "lwip/pbuf.h" |
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44 | #include "lwip/netif.h" |
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45 | #include "lwip/ip_addr.h" |
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46 | #include "lwip/ip.h" |
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47 | |||
48 | #if LWIP_IPV4 |
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49 | |||
50 | #ifdef __cplusplus |
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51 | extern "C" { |
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52 | #endif |
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53 | |||
54 | #if IP_REASSEMBLY |
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55 | /* The IP reassembly timer interval in milliseconds. */ |
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56 | #define IP_TMR_INTERVAL 1000 |
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57 | |||
58 | /** IP reassembly helper struct. |
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59 | * This is exported because memp needs to know the size. |
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60 | */ |
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61 | struct ip_reassdata { |
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62 | struct ip_reassdata *next; |
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63 | struct pbuf *p; |
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64 | struct ip_hdr iphdr; |
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65 | u16_t datagram_len; |
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66 | u8_t flags; |
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67 | u8_t timer; |
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68 | }; |
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69 | |||
70 | void ip_reass_init(void); |
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71 | void ip_reass_tmr(void); |
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72 | struct pbuf * ip4_reass(struct pbuf *p); |
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73 | #endif /* IP_REASSEMBLY */ |
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74 | |||
75 | #if IP_FRAG |
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76 | #if !LWIP_NETIF_TX_SINGLE_PBUF |
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77 | #ifndef LWIP_PBUF_CUSTOM_REF_DEFINED |
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78 | #define LWIP_PBUF_CUSTOM_REF_DEFINED |
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79 | /** A custom pbuf that holds a reference to another pbuf, which is freed |
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80 | * when this custom pbuf is freed. This is used to create a custom PBUF_REF |
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81 | * that points into the original pbuf. */ |
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82 | struct pbuf_custom_ref { |
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83 | /** 'base class' */ |
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84 | struct pbuf_custom pc; |
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85 | /** pointer to the original pbuf that is referenced */ |
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86 | struct pbuf *original; |
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87 | }; |
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88 | #endif /* LWIP_PBUF_CUSTOM_REF_DEFINED */ |
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89 | #endif /* !LWIP_NETIF_TX_SINGLE_PBUF */ |
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90 | |||
91 | err_t ip4_frag(struct pbuf *p, struct netif *netif, const ip4_addr_t *dest); |
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92 | #endif /* IP_FRAG */ |
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93 | |||
94 | #ifdef __cplusplus |
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95 | } |
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96 | #endif |
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97 | |||
98 | #endif /* LWIP_IPV4 */ |
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99 | |||
100 | #endif /* LWIP_HDR_IP4_FRAG_H */ |