1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
|
/***************************************************************************/
/* 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 */
/***************************************************************************/
/* 8.21:TCP, in SYN-RCVD state,
MUST send ACK with next expected SEQ num on receiving any segment (without RST) with OTW SEQ number and remain in the same state. */
/* Procedure
1.Connect
2.Set server socket to SYN_RCVD state
3.Client sends a packet with OTW SEQ to server
4.Client should receive an ACK with proper SEQ and ACK numbers, and server socket should remain in SYN_RCVD state */
#include "nx_api.h"
#include "nx_tcp.h"
#include "nx_ip.h"
#include "nx_ram_network_driver_test_1500.h"
extern void test_control_return(UINT status);
#if !defined(NX_DISABLE_IPV4)
#define DEMO_STACK_SIZE 2048
#define TEST_INTERFACE 0
/* Define the ThreadX and NetX object control blocks... */
static TX_THREAD ntest_0;
static TX_THREAD ntest_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;
/* Define the counters used in the demo application... */
static ULONG error_counter;
static ULONG ack_counter;
static ULONG seg_counter;
static ULONG expected_ack;
static ULONG expected_seq;
/* Define thread prototypes. */
static void ntest_0_entry(ULONG thread_input);
static void ntest_1_entry(ULONG thread_input);
static void ntest_0_connect_received(NX_TCP_SOCKET *server_socket, UINT port);
static void ntest_0_disconnect_received(NX_TCP_SOCKET *server_socket);
extern void _nx_ram_network_driver_1500(struct NX_IP_DRIVER_STRUCT *driver_req);
extern void _nx_ram_network_driver(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_8_21(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr);
static void my_tcp_packet_receive_8_21(NX_IP *ip_ptr, NX_PACKET *packet_ptr);
static void my_tcp_packet_receive_8_21_2(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_8_21_application_define(void *first_unused_memory)
#endif
{
CHAR *pointer;
UINT status;
/* Setup the working pointer. */
pointer = (CHAR *) first_unused_memory;
error_counter = 0;
seg_counter = 0;
ack_counter = 0;
expected_ack = 0;
expected_seq = 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;
/* Create the main thread. */
tx_thread_create(&ntest_1, "thread 1", ntest_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", 256, pointer, 8192);
pointer = pointer + 8192;
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,
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_1500,
pointer, 2048, 1);
pointer = pointer + 2048;
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 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 ntest_0_entry(ULONG thread_input)
{
UINT status;
ULONG actual_status;
/* Print out some test information banners. */
printf("NetX Test: TCP Spec 8.21 Test........................................");
/* Check for earlier error. */
if(error_counter)
{
printf("ERROR!\n");
test_control_return(1);
}
/* Ensure the IP instance has been initialized. */
status = nx_ip_status_check(&ip_0, NX_IP_INITIALIZE_DONE, &actual_status, NX_IP_PERIODIC_RATE);
/* Check status... */
if(status)
error_counter++;
/* Create a socket. */
status = nx_tcp_socket_create(&ip_0, &server_socket, "Server Socket",
NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 100,
NX_NULL, ntest_0_disconnect_received);
/* Check for error. */
if(status)
error_counter++;
/* Setup this thread to listen. */
status = nx_tcp_server_socket_listen(&ip_0, 12, &server_socket, 5, ntest_0_connect_received);
/* Check for error. */
if(status)
error_counter++;
/* Deal the packet with my routing. */
ip_0.nx_ip_tcp_packet_receive = my_tcp_packet_receive_8_21;
/* Accept a client socket connection. */
status = nx_tcp_server_socket_accept(&server_socket, NX_NO_WAIT);
/* Suspend the thread ntest_0. */
tx_thread_suspend(&ntest_0);
/* Check the server socket state. */
if((seg_counter != 1) || (server_socket.nx_tcp_socket_state != NX_TCP_SYN_RECEIVED))
error_counter++;
/* Disconnect the server socket. */
status = nx_tcp_socket_disconnect(&server_socket, NX_IP_PERIODIC_RATE);
/* Set the port to NULL. */
status = nx_tcp_server_socket_unaccept(&server_socket);
/* Check for error. */
if(status)
error_counter++;
/* Unlisten on the server port. */
status = nx_tcp_server_socket_unlisten(&ip_0, 12);
/* Check for error. */
if(status)
error_counter++;
/* Delete the socket. */
status = nx_tcp_socket_delete(&server_socket);
/* Check for error. */
if(status)
error_counter++;
}
static void ntest_1_entry(ULONG thread_input)
{
UINT status;
/* Create a socket. */
status = nx_tcp_socket_create(&ip_1, &client_socket, "Client Socket",
NX_IP_NORMAL, NX_FRAGMENT_OKAY, NX_IP_TIME_TO_LIVE, 200,
NX_NULL, NX_NULL);
/* Check for error. */
if(status)
error_counter++;
/* Bind the socket. */
status = nx_tcp_client_socket_bind(&client_socket, 12, NX_IP_PERIODIC_RATE);
/* Check for error. */
if(status)
error_counter++;
/* Deal the packet with my routing. */
advanced_packet_process_callback = my_packet_process_8_21;
/* Attempt to connect the socket. */
status = nx_tcp_client_socket_connect(&client_socket, IP_ADDRESS(1, 2, 3, 4), 12, NX_IP_PERIODIC_RATE);
/* Deal the packet with my routing. */
ip_1.nx_ip_tcp_packet_receive = my_tcp_packet_receive_8_21_2;
expected_ack = client_socket.nx_tcp_socket_tx_sequence;
/* Send FIN with OTW sequence. */
_nx_tcp_packet_send_fin(&client_socket,(client_socket.nx_tcp_socket_tx_sequence - 50));
/* Resume the thread ntest_1. */
tx_thread_resume(&ntest_0);
/* Disconnect the server socket. */
status = nx_tcp_socket_disconnect(&client_socket, NX_IP_PERIODIC_RATE);
/* Unbind the socket. */
status = nx_tcp_client_socket_unbind(&client_socket);
/* Check for error. */
if(status)
error_counter++;
/* Delete the socket. */
status = nx_tcp_socket_delete(&client_socket);
/* Check for error. */
if(status)
error_counter++;
/* Check for error. */
if(error_counter || (ack_counter != 1) || (seg_counter != 1))
{
printf("ERROR!\n");
test_control_return(1);
}
else
{
printf("SUCCESS!\n");
test_control_return(0);
}
}
static void ntest_0_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 ntest_0_disconnect_received(NX_TCP_SOCKET *socket)
{
/* Check for proper disconnected socket. */
if(socket != &server_socket)
error_counter++;
}
static UINT my_packet_process_8_21(NX_IP *ip_ptr, NX_PACKET *packet_ptr, UINT *operation_ptr, UINT *delay_ptr)
{
NX_TCP_HEADER *tcp_header_ptr;
/* Skip packet that is not TCP. */
if (packet_ptr -> nx_packet_length < 40)
return NX_TRUE;
/* Point to TCP HEADER. */
tcp_header_ptr = (NX_TCP_HEADER *)((packet_ptr -> nx_packet_prepend_ptr) + 20);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
/* Drop the ACK packet. */
if(!(tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_SYN_BIT) && (tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT) && !(tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_RST_BIT))
{
*operation_ptr = NX_RAMDRIVER_OP_DROP;
advanced_packet_process_callback = NULL;
}
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
return NX_TRUE;
}
static void my_tcp_packet_receive_8_21(NX_IP *ip_ptr, NX_PACKET *packet_ptr)
{
NX_TCP_HEADER *tcp_header_ptr;
/* Check the server socket state. */
if(server_socket.nx_tcp_socket_state == NX_TCP_SYN_RECEIVED)
{
/* Point to TCP HEADER. */
tcp_header_ptr = (NX_TCP_HEADER *)packet_ptr -> nx_packet_prepend_ptr;
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_sequence_number);
/* Check the FIN packet with OTW sequence. */
if((tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_FIN_BIT) && (tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT) && !(tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_RST_BIT))
{
if((tcp_header_ptr -> nx_tcp_sequence_number < server_socket.nx_tcp_socket_rx_sequence) ||
(tcp_header_ptr -> nx_tcp_sequence_number >= server_socket.nx_tcp_socket_rx_sequence + server_socket.nx_tcp_socket_rx_window_current))
{
seg_counter++;
/* Record expected sequence of the server socket. */
expected_seq = server_socket.nx_tcp_socket_tx_sequence;
ip_ptr -> nx_ip_tcp_packet_receive = _nx_tcp_packet_receive;
}
}
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_sequence_number);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
}
/* Let server receives the packet. */
_nx_tcp_packet_receive(ip_ptr, packet_ptr);
}
static void my_tcp_packet_receive_8_21_2(NX_IP *ip_ptr, NX_PACKET *packet_ptr)
{
NX_TCP_HEADER *tcp_header_ptr;
/* Point to TCP HEADER. */
tcp_header_ptr = (NX_TCP_HEADER *)packet_ptr -> nx_packet_prepend_ptr;
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_sequence_number);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_acknowledgment_number);
/* Check the ACK packet. */
if(!(tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_RST_BIT) && (tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_ACK_BIT) && !(tcp_header_ptr -> nx_tcp_header_word_3 & NX_TCP_SYN_BIT) &&
(tcp_header_ptr -> nx_tcp_sequence_number == expected_seq) && (tcp_header_ptr -> nx_tcp_acknowledgment_number == expected_ack))
{
ack_counter++;
ip_ptr -> nx_ip_tcp_packet_receive = _nx_tcp_packet_receive;
}
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_acknowledgment_number);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_sequence_number);
NX_CHANGE_ULONG_ENDIAN(tcp_header_ptr -> nx_tcp_header_word_3);
/* Let server receives the packet. */
_nx_tcp_packet_receive(ip_ptr, packet_ptr);
}
#else
#ifdef CTEST
VOID test_application_define(void *first_unused_memory)
#else
void netx_8_21_application_define(void *first_unused_memory)
#endif
{
/* Print out test information banner. */
printf("NetX Test: TCP Spec 8.21 Test........................................N/A\n");
test_control_return(3);
}
#endif
|
