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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 "tx_thread.h"
#include "nx_ip.h"
#include "nx_packet.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_ip_raw_packet_disable PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function disables raw IP packet sending and receiving */
/* capability. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nx_packet_release Release data packet */
/* _nx_ip_raw_packet_cleanup Release suspended threads */
/* _tx_thread_system_preempt_check Check for preemption */
/* tx_mutex_get Get protection mutex */
/* tx_mutex_put Put protection mutex */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _nx_ip_raw_packet_disable(NX_IP *ip_ptr)
{
TX_INTERRUPT_SAVE_AREA
NX_PACKET *current_packet;
NX_PACKET *next_packet;
/* If trace is enabled, insert this event into the trace buffer. */
NX_TRACE_IN_LINE_INSERT(NX_TRACE_IP_RAW_PACKET_DISABLE, ip_ptr, 0, 0, 0, NX_TRACE_IP_EVENTS, 0, 0);
/* Get mutex protection. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
/* Disable interrupts. */
TX_DISABLE
/* Disable raw IP packet sending/receiving. */
ip_ptr -> nx_ip_raw_ip_processing = NX_NULL;
/* Pickup the head pointer to any raw IP packets queued up. */
next_packet = ip_ptr -> nx_ip_raw_received_packet_head;
/* Clear the head and tail pointers. */
ip_ptr -> nx_ip_raw_received_packet_head = NX_NULL;
ip_ptr -> nx_ip_raw_received_packet_tail = NX_NULL;
ip_ptr -> nx_ip_raw_received_packet_count = 0;
/* Temporarily disable preemption. */
_tx_thread_preempt_disable++;
/* Restore interrupts. */
TX_RESTORE
/* Loop to release any queued up raw IP packets. */
while (next_packet)
{
/* Setup the current packet pointer. */
current_packet = next_packet;
/* Move to the next packet. */
next_packet = next_packet -> nx_packet_queue_next;
/* Release the current packet. */
_nx_packet_release(current_packet);
}
/* Lift any suspension on RAW IP packet receives. */
while (ip_ptr -> nx_ip_raw_packet_suspension_list)
{
/* Release the suspended thread. */
_nx_ip_raw_packet_cleanup(ip_ptr -> nx_ip_raw_packet_suspension_list NX_CLEANUP_ARGUMENT);
}
/* Release mutex protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/* Disable interrupts. */
TX_DISABLE
/* Restore preemption. */
_tx_thread_preempt_disable--;
/* Restore interrupts. */
TX_RESTORE
/* Check for preemption. */
_tx_thread_system_preempt_check();
/* Return a successful status! */
return(NX_SUCCESS);
}
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