1 | /**
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2 | * @file
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3 | * AutoIP protocol definitions
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4 | */
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5 |
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6 | /*
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7 | *
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8 | * Copyright (c) 2007 Dominik Spies <kontakt@dspies.de>
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9 | * All rights reserved.
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10 | *
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11 | * Redistribution and use in source and binary forms, with or without modification,
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12 | * are permitted provided that the following conditions are met:
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13 | *
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14 | * 1. Redistributions of source code must retain the above copyright notice,
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15 | * this list of conditions and the following disclaimer.
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16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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17 | * this list of conditions and the following disclaimer in the documentation
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18 | * and/or other materials provided with the distribution.
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19 | * 3. The name of the author may not be used to endorse or promote products
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20 | * derived from this software without specific prior written permission.
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21 | *
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22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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31 | * OF SUCH DAMAGE.
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32 | *
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33 | * Author: Dominik Spies <kontakt@dspies.de>
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34 | *
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35 | * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform
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36 | * with RFC 3927.
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37 | *
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38 | */
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39 |
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40 | #ifndef LWIP_HDR_PROT_AUTOIP_H
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41 | #define LWIP_HDR_PROT_AUTOIP_H
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42 |
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43 | #ifdef __cplusplus
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44 | extern "C" {
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45 | #endif
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46 |
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47 | /* 169.254.0.0 */
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48 | #define AUTOIP_NET 0xA9FE0000
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49 | /* 169.254.1.0 */
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50 | #define AUTOIP_RANGE_START (AUTOIP_NET | 0x0100)
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51 | /* 169.254.254.255 */
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52 | #define AUTOIP_RANGE_END (AUTOIP_NET | 0xFEFF)
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53 |
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54 | /* RFC 3927 Constants */
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55 | #define PROBE_WAIT 1 /* second (initial random delay) */
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56 | #define PROBE_MIN 1 /* second (minimum delay till repeated probe) */
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57 | #define PROBE_MAX 2 /* seconds (maximum delay till repeated probe) */
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58 | #define PROBE_NUM 3 /* (number of probe packets) */
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59 | #define ANNOUNCE_NUM 2 /* (number of announcement packets) */
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60 | #define ANNOUNCE_INTERVAL 2 /* seconds (time between announcement packets) */
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61 | #define ANNOUNCE_WAIT 2 /* seconds (delay before announcing) */
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62 | #define MAX_CONFLICTS 10 /* (max conflicts before rate limiting) */
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63 | #define RATE_LIMIT_INTERVAL 60 /* seconds (delay between successive attempts) */
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64 | #define DEFEND_INTERVAL 10 /* seconds (min. wait between defensive ARPs) */
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65 |
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66 | /* AutoIP client states */
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67 | typedef enum {
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68 | AUTOIP_STATE_OFF = 0,
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69 | AUTOIP_STATE_PROBING = 1,
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70 | AUTOIP_STATE_ANNOUNCING = 2,
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71 | AUTOIP_STATE_BOUND = 3
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72 | } autoip_state_enum_t;
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73 |
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74 | #ifdef __cplusplus
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75 | }
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76 | #endif
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77 |
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78 | #endif /* LWIP_HDR_PROT_AUTOIP_H */
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