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 25 /* Include necessary system files. */ 26 27 #include "nx_api.h" 28 #ifdef FEATURE_NX_IPV6 29 #include "nx_ip.h" 30 #include "nx_ipv6.h" 31 32 33 /**************************************************************************/ 34 /* */ 35 /* FUNCTION RELEASE */ 36 /* */ 37 /* _nx_ipv6_multicast_join PORTABLE C */ 38 /* 6.1 */ 39 /* AUTHOR */ 40 /* */ 41 /* Yuxin Zhou, Microsoft Corporation */ 42 /* */ 43 /* DESCRIPTION */ 44 /* */ 45 /* Joins IPv6 multicast group. This is an internal function. The */ 46 /* caller must hold the IP protection (mutex). */ 47 /* */ 48 /* INPUT */ 49 /* */ 50 /* ip_ptr IP instance pointer */ 51 /* multicast_address IPv6 multicast address */ 52 /* */ 53 /* OUTPUT */ 54 /* */ 55 /* status Completion status */ 56 /* */ 57 /* CALLS */ 58 /* */ 59 /* tx_mutex_get Obtain protection mutex */ 60 /* tx_mutex_put Release protection mutex */ 61 /* (ip_link_driver) Device driver entry point */ 62 /* */ 63 /* CALLED BY */ 64 /* */ 65 /* nx_icmpv6_process_ra */ 66 /* nxd_ipv6_enable */ 67 /* nxd_ipv6_address_set */ 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 /* */ 77 /**************************************************************************/ _nx_ipv6_multicast_join(NX_IP * ip_ptr,ULONG * multicast_addr,NX_INTERFACE * nx_interface)78UINT _nx_ipv6_multicast_join(NX_IP *ip_ptr, ULONG *multicast_addr, NX_INTERFACE *nx_interface) 79 { 80 81 NX_IP_DRIVER driver_request; 82 83 84 /* Construct a driver command. */ 85 driver_request.nx_ip_driver_ptr = ip_ptr; 86 driver_request.nx_ip_driver_command = NX_LINK_MULTICAST_JOIN; 87 driver_request.nx_ip_driver_physical_address_msw = 0x00003333; 88 driver_request.nx_ip_driver_physical_address_lsw = multicast_addr[3]; 89 driver_request.nx_ip_driver_interface = nx_interface; 90 91 /* Obtain the IP mutex so we can search the multicast join list. */ 92 tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER); 93 94 /* Call the device driver with the driver request. */ 95 (nx_interface -> nx_interface_link_driver_entry)(&driver_request); 96 97 /* Release the protection over the IP instance. */ 98 tx_mutex_put(&(ip_ptr -> nx_ip_protection)); 99 100 /*lint -e{644} suppress variable might not be initialized, since "nx_ip_driver_status" was initialized in nx_interface_link_driver_entry. */ 101 return(driver_request.nx_ip_driver_status); 102 } 103 #endif /* FEATURE_NX_IPV6 */ 104 105
