2 * FreeRTOS+TCP V2.0.0
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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29 #ifndef FREERTOS_DHCP_H
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30 #define FREERTOS_DHCP_H
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36 /* Application level configuration options. */
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37 #include "FreeRTOSIPConfig.h"
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38 #include "IPTraceMacroDefaults.h"
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40 /* Used in the DHCP callback if ipconfigUSE_DHCP_HOOK is set to 1. */
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41 typedef enum eDHCP_PHASE
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43 eDHCPPhasePreDiscover, /* Driver is about to send a DHCP discovery. */
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44 eDHCPPhasePreRequest, /* Driver is about to request DHCP an IP address. */
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45 #if( ipconfigDHCP_SEND_DISCOVER_AFTER_AUTO_IP != 0 )
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46 eDHCPPhasePreLLA, /* Driver is about to try get an LLA address */
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47 #endif /* ipconfigDHCP_SEND_DISCOVER_AFTER_AUTO_IP */
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48 } eDHCPCallbackPhase_t;
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50 /* Used in the DHCP callback if ipconfigUSE_DHCP_HOOK is set to 1. */
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51 typedef enum eDHCP_ANSWERS
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53 eDHCPContinue, /* Continue the DHCP process */
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54 eDHCPUseDefaults, /* Stop DHCP and use the static defaults. */
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55 eDHCPStopNoChanges, /* Stop DHCP and continue with current settings. */
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56 } eDHCPCallbackAnswer_t;
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59 * NOT A PUBLIC API FUNCTION.
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61 void vDHCPProcess( BaseType_t xReset );
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63 /* Internal call: returns true if socket is the current DHCP socket */
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64 BaseType_t xIsDHCPSocket( Socket_t xSocket );
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66 /* Prototype of the hook (or callback) function that must be provided by the
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67 application if ipconfigUSE_DHCP_HOOK is set to 1. See the following URL for
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69 http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_IP_Configuration.html#ipconfigUSE_DHCP_HOOK
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71 eDHCPCallbackAnswer_t xApplicationDHCPHook( eDHCPCallbackPhase_t eDHCPPhase, uint32_t ulIPAddress );
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77 #endif /* FREERTOS_DHCP_H */
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