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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Internet Protocol (IP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#ifdef FEATURE_NX_IPV6
#include "nx_ip.h"
#include "nx_ipv6.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_ipv6_multicast_join PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* Joins IPv6 multicast group. This is an internal function. The */
/* caller must hold the IP protection (mutex). */
/* */
/* INPUT */
/* */
/* ip_ptr IP instance pointer */
/* multicast_address IPv6 multicast address */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* tx_mutex_get Obtain protection mutex */
/* tx_mutex_put Release protection mutex */
/* (ip_link_driver) Device driver entry point */
/* */
/* CALLED BY */
/* */
/* nx_icmpv6_process_ra */
/* nxd_ipv6_enable */
/* nxd_ipv6_address_set */
/* */
/**************************************************************************/
UINT _nx_ipv6_multicast_join(NX_IP *ip_ptr, ULONG *multicast_addr, NX_INTERFACE *nx_interface)
{
NX_IP_DRIVER driver_request;
/* Construct a driver command. */
driver_request.nx_ip_driver_ptr = ip_ptr;
driver_request.nx_ip_driver_command = NX_LINK_MULTICAST_JOIN;
driver_request.nx_ip_driver_physical_address_msw = 0x00003333;
driver_request.nx_ip_driver_physical_address_lsw = multicast_addr[3];
driver_request.nx_ip_driver_interface = nx_interface;
/* Obtain the IP mutex so we can search the multicast join list. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
/* Call the device driver with the driver request. */
(nx_interface -> nx_interface_link_driver_entry)(&driver_request);
/* Release the protection over the IP instance. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/*lint -e{644} suppress variable might not be initialized, since "nx_ip_driver_status" was initialized in nx_interface_link_driver_entry. */
return(driver_request.nx_ip_driver_status);
}
#endif /* FEATURE_NX_IPV6 */
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