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/***************************************************************************/
/* Copyright (c) 2024 Microsoft Corporation */
/* Copyright (c) 2026 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 */
/***************************************************************************/
/* This is a small demo of the NetX TCP/IP stack using the AUTO IP module. */
#include "tx_api.h"
#include "nx_api.h"
#include "nx_arp.h"
#include "nx_auto_ip.h"
#include "nx_ram_network_driver_test_1500.h"
#define DEMO_STACK_SIZE 4096
extern void test_control_return(UINT status);
#if !defined(NX_DISABLE_IPV4)
/* Define the ThreadX and NetX object control blocks... */
static TX_THREAD ntest_0;
static NX_PACKET_POOL pool_0;
static NX_IP ip_0;
/* Define the AUTO IP structures for each IP instance. */
static NX_AUTO_IP auto_ip_0;
/* Define the counters used in the demo application... */
static ULONG error_counter;
static UINT current_time;
static UINT start_time;
static UINT arp_probe;
/* Define thread prototypes. */
static void ntest_0_entry(ULONG thread_input);
extern void test_control_return(UINT status);
extern void _nx_ram_network_driver_1500(struct NX_IP_DRIVER_STRUCT *driver_req);
extern UINT (*advanced_packet_process_callback)(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);
static UINT my_arp_packet_process(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);
/* Define what the initial system looks like. */
#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void netx_auto_ip_max_conflicts_test_application_define(void *first_unused_memory)
#endif
{
CHAR *pointer;
UINT status;
/* Setup the working pointer. */
pointer = (CHAR *) first_unused_memory;
/* Initializes the variables. */
error_counter = 0;
current_time = 0;
start_time = 0;
arp_probe = 0;
/* Create the main thread. */
tx_thread_create(&ntest_0, "thread 0", ntest_0_entry, 0,
pointer, DEMO_STACK_SIZE,
3, 3, TX_NO_TIME_SLICE, TX_AUTO_START);
pointer = pointer + DEMO_STACK_SIZE;
/* Initialize the NetX system. */
nx_system_initialize();
/* Create a packet pool. */
status = nx_packet_pool_create(&pool_0, "NetX Main Packet Pool", 1536, pointer, 1536*16);
pointer = pointer + 1536*16;
if (status)
error_counter++;
/* Create an IP instance. */
status = nx_ip_create(&ip_0, "NetX IP Instance 0", IP_ADDRESS(0, 0, 0, 0), 0xFFFFFF00UL, &pool_0, _nx_ram_network_driver_1500,
pointer, 4096, 1);
pointer = pointer + 4096;
if (status)
error_counter++;
/* Enable ARP and supply ARP cache memory for IP Instance 0. */
status = nx_arp_enable(&ip_0, (void *) pointer, 1024);
pointer = pointer + 1024;
/* Check ARP enable status. */
if (status)
error_counter++;
/* Create the AutoIP instance for each IP instance. */
status = nx_auto_ip_create(&auto_ip_0, "AutoIP 0", &ip_0, pointer, 4096, 2);
pointer = pointer + 4096;
/* Check AutoIP create status. */
if (status)
error_counter++;
/* Start both AutoIP instances. */
status = nx_auto_ip_start(&auto_ip_0, IP_ADDRESS(169,254,10,10));
/* Check AutoIP start status. */
if (status)
error_counter++;
}
/* Define the test threads. */
void ntest_0_entry(ULONG thread_input)
{
UINT status;
ULONG actual_status;
ULONG conn_ip_address;
ULONG network_mask;
printf("NetX Test: Auto_IP MAX Conflicts Processing Test.....................");
advanced_packet_process_callback = my_arp_packet_process;
/* Call IP status check routine. */
status = nx_ip_status_check(&ip_0, NX_IP_ADDRESS_RESOLVED, &actual_status, NX_WAIT_FOREVER);
/* Check status. */
if(status)
{
printf("ERROR!\n");
test_control_return(1);
}
/* Pickup the current IP address. */
nx_ip_address_get(&ip_0, &conn_ip_address, &network_mask);
/* Check whether the AutoIP allocates addresses in the range of 169.254.1.0 through 169.254.254.255.*/
if((conn_ip_address & 0xFFFF0000UL) != IP_ADDRESS(169, 254, 0, 0) || (conn_ip_address < IP_ADDRESS(169, 254, 1, 0)) || (conn_ip_address > IP_ADDRESS(169, 254, 254, 255)))
{
printf("ERROR!\n");
test_control_return(1);
}
/* Stop the AutoIP instance auto_ip_0. */
status = nx_auto_ip_stop(&auto_ip_0);
/* Check for error. */
if(status)
{
printf("ERROR!\n");
test_control_return(1);
}
/* Delete the AutoIP instance auto_ip_0. */
status = nx_auto_ip_delete(&auto_ip_0);
/* Check for error. */
if(status)
{
printf("ERROR!\n");
test_control_return(1);
}
/* Determine if the test was successful. */
if ((error_counter) || (arp_probe != (NX_AUTO_IP_MAX_CONFLICTS + 2)) ||
(auto_ip_0.nx_auto_ip_conflict_count != (NX_AUTO_IP_MAX_CONFLICTS + 1)))
{
printf("ERROR!\n");
test_control_return(1);
}
else
{
printf("SUCCESS!\n");
test_control_return(0);
}
}
static UINT my_arp_packet_process(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr)
{
ULONG *message_ptr;
UINT message_type;
ULONG sender_mac_msw;
ULONG sender_mac_lsw;
ULONG sender_ip;
ULONG receive_mac_msw;
ULONG receive_mac_lsw;
ULONG receive_ip;
NX_PACKET *conflict_packet;
/* Setup a pointer to the ARP message. */
message_ptr = (ULONG *) packet_ptr -> nx_packet_prepend_ptr;
/* Endian swapping logic. If NX_LITTLE_ENDIAN is specified, these macros will
swap the endian of the ARP message. */
NX_CHANGE_ULONG_ENDIAN(*(message_ptr));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 1));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 2));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 3));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 4));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 5));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 6));
/* Pickup the ARP message type. */
message_type = (UINT)(*(message_ptr+1) & 0xFFFF);
/* Pick up the mac and ip address. */
sender_mac_msw = (*(message_ptr + 2) >> 16);
sender_mac_lsw = ((*(message_ptr + 2) & 0x0000FFFF) << 16) | (*(message_ptr + 3) >> 16);
sender_ip = ((*(message_ptr + 3) & 0x0000FFFF) << 16) | (*(message_ptr + 4) >> 16);
receive_mac_msw = (*(message_ptr + 4) & 0x0000FFFF);
receive_mac_lsw = (*(message_ptr + 5));
receive_ip = *(message_ptr + 6);
/* Check if ARP probe. */
if ((message_type != NX_ARP_OPTION_REQUEST) ||
(sender_mac_msw != ip_ptr -> nx_ip_interface[0].nx_interface_physical_address_msw) ||
(sender_mac_lsw != ip_ptr -> nx_ip_interface[0].nx_interface_physical_address_lsw) ||
(sender_ip != 0) ||
(receive_mac_msw != 0) ||
(receive_mac_lsw != 0) ||
(receive_ip != auto_ip_0.nx_auto_ip_current_local_address))
{
error_counter++;
return NX_TRUE;
}
/* Endian swapping logic. If NX_LITTLE_ENDIAN is specified, these macros will
swap the endian of the ARP message. */
NX_CHANGE_ULONG_ENDIAN(*(message_ptr));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 1));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 2));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 3));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 4));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 5));
NX_CHANGE_ULONG_ENDIAN(*(message_ptr + 6));
/* Update the arp counter. */
arp_probe ++;
/* Check the arp counter. */
if (arp_probe <= (NX_AUTO_IP_MAX_CONFLICTS + 1))
{
/* Check the conflict count. */
if (arp_probe != (auto_ip_0.nx_auto_ip_conflict_count + 1))
{
error_counter++;
return NX_TRUE;
}
/* Initialize the conflict start time. */
if (arp_probe == (NX_AUTO_IP_MAX_CONFLICTS + 1))
start_time = tx_time_get();
/* Inject conflict arp. */
if (nx_packet_copy(packet_ptr, &conflict_packet, &pool_0, NX_NO_WAIT))
{
error_counter++;
return NX_TRUE;
}
/* Setup a pointer to the conflict ARP message. */
message_ptr = (ULONG *) conflict_packet -> nx_packet_prepend_ptr;
/* Just change the sender mac of probe to act as conflict ARP. */
*(message_ptr + 2) -= 1;
/* Receive conflict arp. */
_nx_arp_packet_deferred_receive(ip_ptr, conflict_packet);
}
else
{
current_time = tx_time_get();
/* Check the extra delay. */
if ((current_time - start_time) < (NX_IP_PERIODIC_RATE * NX_AUTO_IP_RATE_LIMIT_INTERVAL))
error_counter++;
advanced_packet_process_callback = NX_NULL;
}
return NX_TRUE;
}
#else
#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void netx_auto_ip_max_conflicts_test_application_define(void *first_unused_memory)
#endif
{
/* Print out test information banner. */
printf("NetX Test: Auto_IP MAX Conflicts Processing Test.....................N/A\n");
test_control_return(3);
}
#endif
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