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 Protocol (IP) */ 18 /** */ 19 /**************************************************************************/ 20 /**************************************************************************/ 21 22 #define NX_SOURCE_CODE 23 24 /* Include necessary system files. */ 25 #include "nx_api.h" 26 #include "nx_tcp.h" 27 #include "nx_arp.h" 28 #include "nx_icmpv6.h" 29 #include "nx_link.h" 30 31 32 /**************************************************************************/ 33 /* */ 34 /* FUNCTION RELEASE */ 35 /* */ 36 /* _nx_ip_diferred_link_status_process PORTABLE C */ 37 /* 6.4.0 */ 38 /* AUTHOR */ 39 /* */ 40 /* Yuxin Zhou, Microsoft Corporation */ 41 /* */ 42 /* DESCRIPTION */ 43 /* */ 44 /* This function processes link status change event. */ 45 /* */ 46 /* INPUT */ 47 /* */ 48 /* ip_ptr Pointer to IP control block */ 49 /* */ 50 /* OUTPUT */ 51 /* */ 52 /* None */ 53 /* */ 54 /* CALLS */ 55 /* */ 56 /* tx_mutex_get Obtain protection mutex */ 57 /* tx_mutex_put Release protection mutex */ 58 /* _nx_tcp_socket_connection_reset Reset TCP connection */ 59 /* _nx_arp_interface_entries_delete Remove specified ARP entries */ 60 /* _nx_nd_cache_interface_entries_delete Delete ND cache entries assoc-*/ 61 /* iated with specified interface*/ 62 /* link_driver_entry Link driver */ 63 /* memset Zero out the interface */ 64 /* */ 65 /* CALLED BY */ 66 /* */ 67 /* nx_ip_thread_entry */ 68 /* */ 69 /* RELEASE HISTORY */ 70 /* */ 71 /* DATE NAME DESCRIPTION */ 72 /* */ 73 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */ 74 /* 09-30-2020 Yuxin Zhou Modified comment(s), */ 75 /* resulting in version 6.1 */ 76 /* 12-31-2023 Yajun Xia Modified comment(s), */ 77 /* supported VLAN and generic */ 78 /* link layer, */ 79 /* resulting in version 6.4.0 */ 80 /* */ 81 /**************************************************************************/ _nx_ip_deferred_link_status_process(NX_IP * ip_ptr)82VOID _nx_ip_deferred_link_status_process(NX_IP *ip_ptr) 83 { 84 85 UINT i; 86 NX_IP_DRIVER driver_request; 87 ULONG link_up; 88 89 if (ip_ptr -> nx_ip_link_status_change_callback == NX_NULL) 90 { 91 92 /* Callback function is not set. */ 93 return; 94 } 95 96 for (i = 0; i < NX_MAX_PHYSICAL_INTERFACES; i++) 97 { 98 if ((ip_ptr -> nx_ip_interface[i].nx_interface_valid) && 99 (ip_ptr -> nx_ip_interface[i].nx_interface_link_status_change)) 100 { 101 102 /* Reset the flag. */ 103 ip_ptr -> nx_ip_interface[i].nx_interface_link_status_change = NX_FALSE; 104 105 driver_request.nx_ip_driver_ptr = ip_ptr; 106 driver_request.nx_ip_driver_command = NX_LINK_GET_STATUS; 107 driver_request.nx_ip_driver_interface = &(ip_ptr -> nx_ip_interface[i]); 108 driver_request.nx_ip_driver_return_ptr = &link_up; 109 110 (ip_ptr -> nx_ip_interface[i].nx_interface_link_driver_entry)(&driver_request); 111 112 /* Invoke the callback function. */ 113 /*lint -e{644} suppress variable might not be initialized, since "link_up" was initialized in nx_interface_link_driver_entry. */ 114 ip_ptr -> nx_ip_link_status_change_callback(ip_ptr, i, link_up); 115 116 #ifdef NX_ENABLE_VLAN 117 /* Link status change need to propagate to vlan sub interface */ 118 nx_link_vlan_interface_status_change(ip_ptr, i); 119 #endif /* NX_ENABLE_VLAN */ 120 } 121 } 122 } 123 124
