common/src/nxe_ip_interface_detach.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 (IP)                                              */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define NX_SOURCE_CODE

/* Include necessary system files. */

#include "nx_api.h"
#include "nx_ip.h"

/* Bring in externs for caller checking code.  */

NX_CALLER_CHECKING_EXTERNS

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _nxe_ip_interface_detach                            PORTABLE C      */
/*                                                           6.4.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Yuxin Zhou, Microsoft Corporation                                   */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function checks for errors in the IP interface detach          */
/*    function call.                                                      */
/*                                                                        */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    ip_ptr                                Pointer to IP control block   */
/*    index                                 IP interface index            */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _nx_ip_interface_detach               Detaches the interface        */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*                                                                        */
/**************************************************************************/
UINT _nxe_ip_interface_detach(NX_IP *ip_ptr, UINT index)
{

UINT status;

    /* Check for invalid input pointers.  */
    if ((ip_ptr == NX_NULL) || (ip_ptr -> nx_ip_id != NX_IP_ID))
    {
        return(NX_PTR_ERROR);
    }

    /* Check for valid interface index. */
    if (index >= NX_MAX_PHYSICAL_INTERFACES)
    {
        return(NX_INVALID_INTERFACE);
    }

    /* Check for appropriate caller. */
    NX_INIT_AND_THREADS_CALLER_CHECKING

    /* Call actual IP interface detach function. */
    status = _nx_ip_interface_detach(ip_ptr, index);

    /* Return completion status. */
    return(status);
}