/***************************************************************************/ /* 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 concentrates on basic IP fragmentation. */ /* Requirement: __PRODUCT_NETXDUO__ is defined, NX_DISABLE_FRAGMENTATION is not defined. */ /* Test sequence: * 1. Client send UDP 1500 bytes to Server. * 2. Modify the protocol with ICMP for second fragment packet. * 3. Check if Server receive the 1500 bytes. */ #include "tx_api.h" #include "nx_api.h" #include "nx_tcp.h" #include "nx_ram_network_driver_test_1500.h" extern void test_control_return(UINT status); #if defined(__PRODUCT_NETXDUO__) && !defined(NX_DISABLE_FRAGMENTATION) && !defined(NX_DISABLE_IPV4) #include "nx_ip.h" #define DEMO_STACK_SIZE 2048 /* 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_UDP_SOCKET socket_0; static NX_UDP_SOCKET socket_1; /* Define the counters used in the demo application... */ static ULONG error_counter; static ULONG packet_counter; static CHAR msg[1500]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'}; /* Define thread prototypes. */ static void thread_0_entry(ULONG thread_input); static void thread_1_entry(ULONG thread_input); extern void _nx_ram_network_driver_256(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_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_ip_fragmentation_wrong_protocol_field_test_application_define(void *first_unused_memory) #endif { CHAR *pointer; UINT status; /* Setup the working pointer. */ pointer = (CHAR *) first_unused_memory; error_counter = 0; packet_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; /* . */ 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", 512, pointer, 1536*16); pointer = pointer + 1500*16; /* Check for pool creation error. */ if (status) error_counter++; /* Create an IP instance. */ status = nx_ip_create(&ip_0, "NetX IP Instance 0", IP_ADDRESS(1, 2, 3, 4), 0xFFFFF000UL, &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), 0xFFFFF000UL, &pool_0, _nx_ram_network_driver_256, pointer, 2048, 1); pointer = pointer + 2048; /* Check for IP create errors. */ 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; /* Check for ARP enable errors. */ if (status) error_counter++; /* Enable UDP traffic. */ status = nx_udp_enable(&ip_0); status += nx_udp_enable(&ip_1); /* Check for UDP enable errors. */ if (status) error_counter++; /* Enable IP fragmentation logic on both IP instances. */ status = nx_ip_fragment_enable(&ip_0); status += nx_ip_fragment_enable(&ip_1); /* Check for IP fragment enable errors. */ if (status) error_counter++; } /* Define the test threads. */ static void thread_0_entry(ULONG thread_input) { UINT status; NX_PACKET *my_packet; UINT packet_length; /* Print out some test information banners. */ printf("NetX Test: IP Fragmentation Wrong Protocol Field Test................"); /* Create a UDP socket. */ status = nx_udp_socket_create(&ip_1, &socket_1, "Socket 1", NX_IP_NORMAL, NX_FRAGMENT_OKAY, 0x08, 5); /* Check status. */ if (status) { printf("ERROR!\n"); test_control_return(1); } /* Bind the UDP socket to the IP port. */ status = nx_udp_socket_bind(&socket_1, 0x89, NX_NO_WAIT); /* Check status. */ if (status) { printf("ERROR!\n"); test_control_return(1); } /* Let Socket 0 send all packet. test _nx_ip_fragment_assembly() Hit the false condition: ((search_header -> nx_ip_header_word_2 & NX_IP_PROTOCOL_MASK) == (current_header -> nx_ip_header_word_2 & NX_IP_PROTOCOL_MASK)) */ tx_thread_sleep(2 * NX_IP_PERIODIC_RATE); /* Initialize the value. */ packet_length = 0; /* Loop to receive the packets. */ while(1) { /* Receive the packet. */ status = nx_udp_socket_receive(&socket_1, &my_packet, NX_NO_WAIT); /* Check status. */ if(status == NX_SUCCESS) { /* Update the packet length. */ packet_length += my_packet -> nx_packet_length; } else { break; } } /* Check the packet length. */ if (packet_length != 0) { printf("ERROR!\n"); test_control_return(1); } /* Unbind the UDP socket. */ status = nx_udp_socket_unbind(&socket_1); /* Check status. */ if (status) { printf("ERROR!\n"); test_control_return(1); } /* Delete the UDP socket. */ status = nx_udp_socket_delete(&socket_1); /* Check status. */ if (status) { printf("ERROR!\n"); test_control_return(1); } /* Check status. */ if ((error_counter) || (packet_counter < 2)) { 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; NX_PACKET *my_packet; /* Create a UDP socket. */ status = nx_udp_socket_create(&ip_0, &socket_0, "Socket 0", NX_IP_NORMAL, NX_FRAGMENT_OKAY, 0x08, 5); /* Check status. */ if (status) error_counter++; /* Bind the UDP socket to the IP port. */ status = nx_udp_socket_bind(&socket_0, 0x88, NX_NO_WAIT); /* Check status. */ if (status) error_counter++; /* Set the callback function. */ advanced_packet_process_callback = my_packet_process; /* Allocate a packet. */ status = nx_packet_allocate(&pool_0, &my_packet, NX_UDP_PACKET, TX_WAIT_FOREVER); /* Check status. */ if (status != NX_SUCCESS) error_counter++; /* Write ABCs into the packet payload! */ status = nx_packet_data_append(my_packet, msg, 1500, &pool_0, NX_IP_PERIODIC_RATE); /* Check for error. */ if(status) error_counter++; /* Send the UDP packet. */ status = nx_udp_socket_send(&socket_0, my_packet, IP_ADDRESS(1, 2, 3, 5), 0x89); /* Check status. */ if (status) error_counter++; /* Unbind the UDP socket. */ status = nx_udp_socket_unbind(&socket_0); /* Check status. */ if (status) error_counter++; /* Delete the UDP socket. */ status = nx_udp_socket_delete(&socket_0); /* Check status. */ if (status) error_counter++; } static UINT my_packet_process(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr) { NX_IPV4_HEADER *ip_header_ptr; ULONG val; ULONG checksum; /* Return if it is not an IP packet from ip_0. */ if ((ip_ptr == &ip_0) && (packet_ptr -> nx_packet_length > 28)) { /* Updated the packet_counter. */ packet_counter ++; /* Copy the first fragmentation packet. */ if (packet_counter == 2) { /* Point to the IP HEADER. */ ip_header_ptr = (NX_IPV4_HEADER *) packet_ptr -> nx_packet_prepend_ptr; NX_CHANGE_ULONG_ENDIAN(ip_header_ptr -> nx_ip_header_word_2); /* Modify the protocol to ICMP. */ ip_header_ptr -> nx_ip_header_word_2 &= 0xFF000000; ip_header_ptr -> nx_ip_header_word_2 |= NX_IP_ICMP; NX_CHANGE_ULONG_ENDIAN(ip_header_ptr -> nx_ip_header_word_2); /* Calculate the IP checksum. */ checksum = _nx_ip_checksum_compute(packet_ptr, NX_IP_VERSION_V4, /* Length is the size of IP header, including options */ 20, /* IPv4 header checksum doesn't care src/dest addresses */ NULL, NULL); val = (ULONG)(~checksum); val = val & NX_LOWER_16_MASK; /* Convert to network byte order. */ NX_CHANGE_ULONG_ENDIAN(val); /* Now store the checksum in the IP header. */ ip_header_ptr -> nx_ip_header_word_2 = ip_header_ptr -> nx_ip_header_word_2 | val; } } return NX_TRUE; } #else #ifdef CTEST VOID test_application_define(void *first_unused_memory) #else void netx_ip_fragmentation_wrong_protocol_field_test_application_define(void *first_unused_memory) #endif { printf("NetX Test: IP Fragmentation Wrong Protocol Field Test................N/A\n"); test_control_return(3); } #endif /* NX_DISABLE_FRAGMENTATION */