1 /**************************************************************************/ 2 /* */ 3 /* Copyright (c) Microsoft Corporation. All rights reserved. */ 4 /* */ 5 /* This software is licensed under the Microsoft Software License */ 6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */ 7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ 8 /* and in the root directory of this software. */ 9 /* */ 10 /**************************************************************************/ 11 12 13 /**************************************************************************/ 14 /**************************************************************************/ 15 /** */ 16 /** NetX Component */ 17 /** */ 18 /** Internet Control Message Protocol (ICMP) */ 19 /** */ 20 /**************************************************************************/ 21 /**************************************************************************/ 22 23 #define NX_SOURCE_CODE 24 25 26 /* Include necessary system files. */ 27 28 #include "nx_api.h" 29 #include "nx_ipv6.h" 30 #include "nx_icmpv6.h" 31 32 #ifdef NX_IPSEC_ENABLE 33 #include "nx_ipsec.h" 34 #endif /* NX_IPSEC_ENABLE */ 35 36 37 #ifdef FEATURE_NX_IPV6 38 39 40 /**************************************************************************/ 41 /* */ 42 /* FUNCTION RELEASE */ 43 /* */ 44 /* _nx_icmpv6_DAD_failure PORTABLE C */ 45 /* 6.1 */ 46 /* AUTHOR */ 47 /* */ 48 /* Yuxin Zhou, Microsoft Corporation */ 49 /* */ 50 /* DESCRIPTION */ 51 /* */ 52 /* This function is called when the DAD process determines that a */ 53 /* duplicate address is present on the local network. The interface */ 54 /* is set to an invalid state. */ 55 /* */ 56 /* INPUT */ 57 /* */ 58 /* ip_ptr IP stack instance */ 59 /* ipv6_address The local IPv6 interface */ 60 /* that detects the failure. */ 61 /* */ 62 /* OUTPUT */ 63 /* */ 64 /* None */ 65 /* */ 66 /* CALLS */ 67 /* */ 68 /* [ipv6_address_change_notify] User callback function */ 69 /* */ 70 /* CALLED BY */ 71 /* */ 72 /* _nx_icmpv6_process_na */ 73 /* */ 74 /* RELEASE HISTORY */ 75 /* */ 76 /* DATE NAME DESCRIPTION */ 77 /* */ 78 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */ 79 /* 09-30-2020 Yuxin Zhou Modified comment(s), */ 80 /* resulting in version 6.1 */ 81 /* */ 82 /**************************************************************************/ 83 84 #ifndef NX_DISABLE_IPV6_DAD _nx_icmpv6_DAD_failure(NX_IP * ip_ptr,NXD_IPV6_ADDRESS * ipv6_address)85VOID _nx_icmpv6_DAD_failure(NX_IP *ip_ptr, NXD_IPV6_ADDRESS *ipv6_address) 86 { 87 #ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY 88 UINT interface_index; 89 UINT ipv6_addr_index; 90 #endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */ 91 NXD_IPV6_ADDRESS *address_ptr; 92 93 /* Set the interface to an invalid state. */ 94 ipv6_address -> nxd_ipv6_address_state = NX_IPV6_ADDR_STATE_UNKNOWN; 95 ipv6_address -> nxd_ipv6_address_valid = NX_FALSE; 96 97 /* Indicate the DAD process is disabled. */ 98 ipv6_address -> nxd_ipv6_address_DupAddrDetectTransmit = 0; 99 #ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY 100 if (ip_ptr -> nx_ipv6_address_change_notify) 101 { 102 ipv6_addr_index = (ULONG)ipv6_address -> nxd_ipv6_address_index; 103 interface_index = (ULONG)ipv6_address -> nxd_ipv6_address_attached -> nx_interface_index; 104 ip_ptr -> nx_ipv6_address_change_notify(ip_ptr, NX_IPV6_ADDRESS_DAD_FAILURE, interface_index, ipv6_addr_index, &ipv6_address -> nxd_ipv6_address[0]); 105 } 106 #else 107 NX_PARAMETER_NOT_USED(ip_ptr); 108 #endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */ 109 110 /* Remove address from interface. */ 111 if (ipv6_address == ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head) 112 { 113 ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head = ipv6_address -> nxd_ipv6_address_next; 114 } 115 else 116 { 117 118 for (address_ptr = ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head; 119 address_ptr != NX_NULL; 120 address_ptr = address_ptr -> nxd_ipv6_address_next) 121 { 122 if (address_ptr -> nxd_ipv6_address_next == ipv6_address) 123 { 124 address_ptr -> nxd_ipv6_address_next = ipv6_address -> nxd_ipv6_address_next; 125 } 126 } 127 } 128 } 129 130 #endif /* NX_DISABLE_IPV6_DAD */ 131 #endif /* FEATURE_NX_IPV6 */ 132 133
