1 /*************************************************************************** 2 * Copyright (c) 2024 Microsoft Corporation 3 * 4 * This program and the accompanying materials are made available under the 5 * terms of the MIT License which is available at 6 * https://opensource.org/licenses/MIT. 7 * 8 * SPDX-License-Identifier: MIT 9 **************************************************************************/ 10 11 12 /**************************************************************************/ 13 /**************************************************************************/ 14 /** */ 15 /** NetX Component */ 16 /** */ 17 /** Internet Control Message Protocol (ICMP) */ 18 /** */ 19 /**************************************************************************/ 20 /**************************************************************************/ 21 22 #define NX_SOURCE_CODE 23 24 25 /* Include necessary system files. */ 26 27 #include "nx_api.h" 28 #include "nx_ipv6.h" 29 #include "nx_icmpv6.h" 30 31 #ifdef NX_IPSEC_ENABLE 32 #include "nx_ipsec.h" 33 #endif /* NX_IPSEC_ENABLE */ 34 35 36 #ifdef FEATURE_NX_IPV6 37 38 39 /**************************************************************************/ 40 /* */ 41 /* FUNCTION RELEASE */ 42 /* */ 43 /* _nx_icmpv6_DAD_failure PORTABLE C */ 44 /* 6.1 */ 45 /* AUTHOR */ 46 /* */ 47 /* Yuxin Zhou, Microsoft Corporation */ 48 /* */ 49 /* DESCRIPTION */ 50 /* */ 51 /* This function is called when the DAD process determines that a */ 52 /* duplicate address is present on the local network. The interface */ 53 /* is set to an invalid state. */ 54 /* */ 55 /* INPUT */ 56 /* */ 57 /* ip_ptr IP stack instance */ 58 /* ipv6_address The local IPv6 interface */ 59 /* that detects the failure. */ 60 /* */ 61 /* OUTPUT */ 62 /* */ 63 /* None */ 64 /* */ 65 /* CALLS */ 66 /* */ 67 /* [ipv6_address_change_notify] User callback function */ 68 /* */ 69 /* CALLED BY */ 70 /* */ 71 /* _nx_icmpv6_process_na */ 72 /* */ 73 /* RELEASE HISTORY */ 74 /* */ 75 /* DATE NAME DESCRIPTION */ 76 /* */ 77 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */ 78 /* 09-30-2020 Yuxin Zhou Modified comment(s), */ 79 /* resulting in version 6.1 */ 80 /* */ 81 /**************************************************************************/ 82 83 #ifndef NX_DISABLE_IPV6_DAD _nx_icmpv6_DAD_failure(NX_IP * ip_ptr,NXD_IPV6_ADDRESS * ipv6_address)84VOID _nx_icmpv6_DAD_failure(NX_IP *ip_ptr, NXD_IPV6_ADDRESS *ipv6_address) 85 { 86 #ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY 87 UINT interface_index; 88 UINT ipv6_addr_index; 89 #endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */ 90 NXD_IPV6_ADDRESS *address_ptr; 91 92 /* Set the interface to an invalid state. */ 93 ipv6_address -> nxd_ipv6_address_state = NX_IPV6_ADDR_STATE_UNKNOWN; 94 ipv6_address -> nxd_ipv6_address_valid = NX_FALSE; 95 96 /* Indicate the DAD process is disabled. */ 97 ipv6_address -> nxd_ipv6_address_DupAddrDetectTransmit = 0; 98 #ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY 99 if (ip_ptr -> nx_ipv6_address_change_notify) 100 { 101 ipv6_addr_index = (ULONG)ipv6_address -> nxd_ipv6_address_index; 102 interface_index = (ULONG)ipv6_address -> nxd_ipv6_address_attached -> nx_interface_index; 103 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]); 104 } 105 #else 106 NX_PARAMETER_NOT_USED(ip_ptr); 107 #endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */ 108 109 /* Remove address from interface. */ 110 if (ipv6_address == ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head) 111 { 112 ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head = ipv6_address -> nxd_ipv6_address_next; 113 } 114 else 115 { 116 117 for (address_ptr = ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head; 118 address_ptr != NX_NULL; 119 address_ptr = address_ptr -> nxd_ipv6_address_next) 120 { 121 if (address_ptr -> nxd_ipv6_address_next == ipv6_address) 122 { 123 address_ptr -> nxd_ipv6_address_next = ipv6_address -> nxd_ipv6_address_next; 124 } 125 } 126 } 127 } 128 129 #endif /* NX_DISABLE_IPV6_DAD */ 130 #endif /* FEATURE_NX_IPV6 */ 131 132
