/***************************************************************************/
/* 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 NetX test use the second interface send a larger packet with IPv4 address
   to test the TCP MSS process procedure.  */

#include    "tx_api.h"
#include    "nx_api.h"

extern void  test_control_return(UINT status);

#if (NX_MAX_PHYSICAL_INTERFACES > 1) && !defined(NX_DISABLE_IPV4)

#include    "nx_tcp.h"
#include    "nx_ip.h"

#define     DEMO_STACK_SIZE    2048
#define     TEST_INTERFACE     1

/* Define the ThreadX and NetX object control blocks...  */

static TX_THREAD               thread_0;
static TX_THREAD               thread_1;

static NX_PACKET_POOL          pool_0;
static NX_IP                   ip_0;
static NX_IP                   ip_1;
static NX_TCP_SOCKET           client_socket;
static NX_TCP_SOCKET           server_socket;
static CHAR                    rcv_buffer[600];
static INT                     recv_length = 0;

static CHAR                    msg[600];

/* Define the counters used in the demo application...  */

static ULONG                   error_counter;

/* Define thread prototypes.  */
static void    thread_0_entry(ULONG thread_input);
static void    thread_1_entry(ULONG thread_input);
static void    thread_1_connect_received(NX_TCP_SOCKET *server_socket, UINT port);
static void    thread_1_disconnect_received(NX_TCP_SOCKET *server_socket);
extern void    _nx_ram_network_driver_256(struct NX_IP_DRIVER_STRUCT *driver_req);
extern void    _nx_ram_network_driver_512(struct NX_IP_DRIVER_STRUCT *driver_req);
extern void    (*packet_process_callback)(NX_IP *ip_ptr, NX_PACKET *packet_ptr);
static void    packet_receive(NX_IP *ip_ptr, NX_PACKET *packet_ptr);

/* Define what the initial system looks like.  */

#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void           netx_tcp_ipv4_interface2_mss_test_application_define(void *first_unused_memory)
#endif
{
    CHAR       *pointer;
    UINT       status;

    /* Setup the working pointer.  */
    pointer = (CHAR *) first_unused_memory;

    error_counter = 0;

    /* Create the main thread.  */
    tx_thread_create(&thread_0, "thread 0", thread_0_entry, 0,  
        pointer, DEMO_STACK_SIZE, 
        4, 4, TX_NO_TIME_SLICE, TX_AUTO_START);

    pointer = pointer + DEMO_STACK_SIZE;

    /* Create the main thread.  */
    tx_thread_create(&thread_1, "thread 1", thread_1_entry, 0,  
        pointer, DEMO_STACK_SIZE, 
        4, 4, 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(1,2,3,4), 0xFFFFFF00UL, &pool_0, _nx_ram_network_driver_256,
        pointer, 2048, 1);
    pointer = pointer + 2048;

    /* Create another IP instance.  */
    status += _nx_ip_create(&ip_1, "NetX IP Instance 1", IP_ADDRESS(1,2,3,5), 0xFFFFFF00UL, &pool_0, _nx_ram_network_driver_256,
        pointer, 2048, 1);
    pointer = pointer + 2048;

    status += nx_ip_interface_attach(&ip_0, "Second Interface", IP_ADDRESS(2,2,3,4), 0xFFFFFF00UL, _nx_ram_network_driver_512);
    status += nx_ip_interface_attach(&ip_1, "Second Interface", IP_ADDRESS(2,2,3,5), 0xFFFFFF00UL, _nx_ram_network_driver_512);

    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;

    /* Enable ARP and supply ARP cache memory for IP Instance 1.  */
    status += nx_arp_enable(&ip_1, (void *) pointer, 1024);
    pointer = pointer + 1024;

    /* Enable ICMP for IP Instance 0 and 1.  */
#ifdef __PRODUCT_NETXDUO__
    status = nxd_icmp_enable(&ip_0);
    status += nxd_icmp_enable(&ip_1);
#else
    status = nx_icmp_enable(&ip_0);
    status += nx_icmp_enable(&ip_1);
#endif /* __PRODUCT_NETXDUO__ */

    /* Check ARP enable status.  */
    if(status)
        error_counter++;

    /* Enable TCP processing for both IP instances.  */
    status = nx_tcp_enable(&ip_0);
    status += nx_tcp_enable(&ip_1);

    /* Check TCP enable status.  */
    if(status)
        error_counter++;
}

/* Define the test threads.  */

static void    thread_0_entry(ULONG thread_input)
{
    UINT       status;
    NX_PACKET  *my_packet1;
    UINT       i;

    /* Use random number generator to fill the outgoing packet.  */
    for(i = 0; i < 600; i++)
    {
        msg[i] = rand();
    }

    /* Print out test information banner.  */
    printf("NetX Test:   TCP IPv4 Interface2 MSS Test..............................");

    /* Check for earlier error.  */
    if(error_counter)
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_0, &client_socket, "Client Socket", 
        NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 600,
        NX_NULL, NX_NULL);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Bind the socket.  */
    status = nx_tcp_client_socket_bind(&client_socket, 12, NX_WAIT_FOREVER);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Attempt to connect the socket.  */
    tx_thread_relinquish();

    /* Determine if the timeout error occurred.  */
    if((status != NX_SUCCESS))
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Call connect.  */ 
    status = _nx_tcp_client_socket_connect(&client_socket, IP_ADDRESS(2,2,3,5), 12, 5 * NX_IP_PERIODIC_RATE);

    /* Allocate a packet.  */
    status = nx_packet_allocate(&pool_0, &my_packet1, NX_TCP_PACKET, NX_WAIT_FOREVER);

    /* Check for error.  */
    if((status != NX_SUCCESS))
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Point to new receive function */
    ip_1.nx_ip_tcp_packet_receive = packet_receive;

    memcpy(my_packet1 -> nx_packet_prepend_ptr, &msg[0], 550);
    my_packet1 -> nx_packet_length = 550;
    my_packet1 -> nx_packet_append_ptr = my_packet1 -> nx_packet_prepend_ptr + 550;

    /* Check for error.  */
    if(status)
        error_counter++;
    
#ifdef __PRODUCT_NETXDUO__
    my_packet1 -> nx_packet_ip_version = NX_IP_VERSION_V4;
#endif /* __PRODUCT_NETXDUO__ */

    /* Send the packet.  */
    status += nx_tcp_socket_send(&client_socket, my_packet1, 2 * NX_IP_PERIODIC_RATE);

    tx_thread_relinquish();

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Determine if the test was successful.  */
    if(error_counter)
    {
        printf("ERROR!\n");
        test_control_return(1);
    }
    else
    {
        printf("SUCCESS!\n");
        test_control_return(0);
    }

}

static void    thread_1_entry(ULONG thread_input)
{
    UINT       status;
    ULONG      actual_status;

    /* Ensure the IP instance has been initialized.  */
    status = nx_ip_status_check(&ip_1, NX_IP_INITIALIZE_DONE, &actual_status, NX_IP_PERIODIC_RATE);

    /* Check status.  */
    if(status != NX_SUCCESS)
    {
        error_counter++;
    }

    /* Create a socket.  */
    status = nx_tcp_socket_create(&ip_1, &server_socket, "Server Socket", 
        NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 650,
        NX_NULL, thread_1_disconnect_received);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Setup this thread to listen.  */
    status = nx_tcp_server_socket_listen(&ip_1, 12, &server_socket, 5, thread_1_connect_received);

    /* Check for error.  */
    if(status)
        error_counter++;

    /* Accept a client socket connection.  */
    status = nx_tcp_server_socket_accept(&server_socket, NX_IP_PERIODIC_RATE);

    if(status)
        error_counter++;

}

static void    thread_1_connect_received(NX_TCP_SOCKET *socket_ptr, UINT port)
{

    /* Check for the proper socket and port.  */
    if((socket_ptr != &server_socket) || (port != 12))
        error_counter++;
}

static void    thread_1_disconnect_received(NX_TCP_SOCKET *socket)
{

    /* Check for proper disconnected socket.  */
    if(socket != &server_socket)
        error_counter++;
}

static void    packet_receive(NX_IP *ip_ptr, NX_PACKET *packet_ptr)
{

    UINT length;

    /* Data length equal to packet length - 20.  */
    length = packet_ptr -> nx_packet_length - 20;

    if(length > client_socket.nx_tcp_socket_connect_mss)
    {
        printf("ERROR!\n");
        test_control_return(1);
    }

    /* Copy the packet.  */
    memcpy(&rcv_buffer[recv_length], packet_ptr -> nx_packet_prepend_ptr + 20, length);
    recv_length += length;

    /* Check whether or not the last packet.  */
    if(length < client_socket.nx_tcp_socket_connect_mss)
    {

        /* The packet is the last packet, compare the packet and receive_length.  */
        if(memcmp(rcv_buffer,msg,packet_ptr -> nx_packet_length) || recv_length != 550)
        {
            printf("ERROR!\n");
            test_control_return(1);
        }

        /* Point to default function.  */
        ip_1.nx_ip_tcp_packet_receive = _nx_tcp_packet_receive;
    }

    /* Set client_socket's outstanding bytes to 0.  */
    client_socket.nx_tcp_socket_tx_outstanding_bytes = 0;

    _nx_tcp_packet_receive(ip_ptr, packet_ptr);

}
#else
#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void           netx_tcp_ipv4_interface2_mss_test_application_define(void *first_unused_memory)
#endif
{
    printf("NetX Test:   TCP IPv4 Interface2 MSS Test..............................N/A\n");
    test_control_return(3);
}
#endif