common/src/nxd_ipv6_default_router_add.c


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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 version 6 Default Router Table (IPv6 router)      */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE


/* Include necessary system files.  */

#include "nx_api.h"
#include "nx_ipv6.h"
#ifdef FEATURE_NX_IPV6
#include "nx_nd_cache.h"
#endif /* FEATURE_NX_IPV6 */


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _nxd_ipv6_default_router_add                         PORTABLE C     */
/*                                                           6.4.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Yuxin Zhou, Microsoft Corporation                                   */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function adds a router to the default IPv6 routing table.      */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    ip_ptr                                IP instance pointer           */
/*    router_addr                           Destination Network addr      */
/*    router_lifetime                       Life time information         */
/*    interface_index                       Index to the interface        */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    tx_mutex_get                          Obtain protection mutex       */
/*    tx_mutex_put                          Release protection mutex      */
/*    _nxd_ipv6_default_router_add_internal                               */
/*                                          Actual function that adds     */
/*                                          an entry to the router table  */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application code                                                    */
/*                                                                        */
/*                                                                        */
/**************************************************************************/
UINT  _nxd_ipv6_default_router_add(NX_IP *ip_ptr,
                                   NXD_ADDRESS *router_addr,
                                   ULONG router_lifetime,
                                   UINT interface_index)
{
#ifdef FEATURE_NX_IPV6

UINT status;


    NX_TRACE_IN_LINE_INSERT(NXD_TRACE_IPV6_DEFAULT_ROUTER_ADD, ip_ptr, router_addr -> nxd_ip_address.v6[3], router_lifetime, 0, NX_TRACE_IP_EVENTS, 0, 0);

    /* Obtain protection on this IP instance for access into the default router table. */
    tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);

    status = _nxd_ipv6_default_router_add_internal(ip_ptr,
                                                   router_addr -> nxd_ip_address.v6,
                                                   router_lifetime,
                                                   &ip_ptr -> nx_ip_interface[interface_index],
                                                   NX_IPV6_ROUTE_TYPE_STATIC,
                                                   NX_NULL);

    /* Release the mutex.  */
    tx_mutex_put(&(ip_ptr -> nx_ip_protection));

    return(status);

#else /* !FEATURE_NX_IPV6 */
    NX_PARAMETER_NOT_USED(ip_ptr);
    NX_PARAMETER_NOT_USED(router_addr);
    NX_PARAMETER_NOT_USED(router_lifetime);
    NX_PARAMETER_NOT_USED(interface_index);

    return(NX_NOT_SUPPORTED);

#endif /* FEATURE_NX_IPV6 */
}