1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * vsock_test - vsock.ko test suite
4 *
5 * Copyright (C) 2017 Red Hat, Inc.
6 *
7 * Author: Stefan Hajnoczi <stefanha@redhat.com>
8 */
9
10 #include <getopt.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14 #include <errno.h>
15 #include <unistd.h>
16 #include <linux/kernel.h>
17 #include <sys/types.h>
18 #include <sys/socket.h>
19 #include <time.h>
20 #include <sys/mman.h>
21 #include <poll.h>
22 #include <signal.h>
23
24 #include "vsock_test_zerocopy.h"
25 #include "timeout.h"
26 #include "control.h"
27 #include "util.h"
28
29 static void test_stream_connection_reset(const struct test_opts *opts)
30 {
31 union {
32 struct sockaddr sa;
33 struct sockaddr_vm svm;
34 } addr = {
35 .svm = {
36 .svm_family = AF_VSOCK,
37 .svm_port = opts->peer_port,
38 .svm_cid = opts->peer_cid,
39 },
40 };
41 int ret;
42 int fd;
43
44 fd = socket(AF_VSOCK, SOCK_STREAM, 0);
45
46 timeout_begin(TIMEOUT);
47 do {
48 ret = connect(fd, &addr.sa, sizeof(addr.svm));
49 timeout_check("connect");
50 } while (ret < 0 && errno == EINTR);
51 timeout_end();
52
53 if (ret != -1) {
54 fprintf(stderr, "expected connect(2) failure, got %d\n", ret);
55 exit(EXIT_FAILURE);
56 }
57 if (errno != ECONNRESET) {
58 fprintf(stderr, "unexpected connect(2) errno %d\n", errno);
59 exit(EXIT_FAILURE);
60 }
61
62 close(fd);
63 }
64
65 static void test_stream_bind_only_client(const struct test_opts *opts)
66 {
67 union {
68 struct sockaddr sa;
69 struct sockaddr_vm svm;
70 } addr = {
71 .svm = {
72 .svm_family = AF_VSOCK,
73 .svm_port = opts->peer_port,
74 .svm_cid = opts->peer_cid,
75 },
76 };
77 int ret;
78 int fd;
79
80 /* Wait for the server to be ready */
81 control_expectln("BIND");
82
83 fd = socket(AF_VSOCK, SOCK_STREAM, 0);
84
85 timeout_begin(TIMEOUT);
86 do {
87 ret = connect(fd, &addr.sa, sizeof(addr.svm));
88 timeout_check("connect");
89 } while (ret < 0 && errno == EINTR);
90 timeout_end();
91
92 if (ret != -1) {
93 fprintf(stderr, "expected connect(2) failure, got %d\n", ret);
94 exit(EXIT_FAILURE);
95 }
96 if (errno != ECONNRESET) {
97 fprintf(stderr, "unexpected connect(2) errno %d\n", errno);
98 exit(EXIT_FAILURE);
99 }
100
101 /* Notify the server that the client has finished */
102 control_writeln("DONE");
103
104 close(fd);
105 }
106
107 static void test_stream_bind_only_server(const struct test_opts *opts)
108 {
109 union {
110 struct sockaddr sa;
111 struct sockaddr_vm svm;
112 } addr = {
113 .svm = {
114 .svm_family = AF_VSOCK,
115 .svm_port = opts->peer_port,
116 .svm_cid = VMADDR_CID_ANY,
117 },
118 };
119 int fd;
120
121 fd = socket(AF_VSOCK, SOCK_STREAM, 0);
122
123 if (bind(fd, &addr.sa, sizeof(addr.svm)) < 0) {
124 perror("bind");
125 exit(EXIT_FAILURE);
126 }
127
128 /* Notify the client that the server is ready */
129 control_writeln("BIND");
130
131 /* Wait for the client to finish */
132 control_expectln("DONE");
133
134 close(fd);
135 }
136
137 static void test_stream_client_close_client(const struct test_opts *opts)
138 {
139 int fd;
140
141 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
142 if (fd < 0) {
143 perror("connect");
144 exit(EXIT_FAILURE);
145 }
146
147 send_byte(fd, 1, 0);
148 close(fd);
149 }
150
151 static void test_stream_client_close_server(const struct test_opts *opts)
152 {
153 int fd;
154
155 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
156 if (fd < 0) {
157 perror("accept");
158 exit(EXIT_FAILURE);
159 }
160
161 /* Wait for the remote to close the connection, before check
162 * -EPIPE error on send.
163 */
164 vsock_wait_remote_close(fd);
165
166 send_byte(fd, -EPIPE, 0);
167 recv_byte(fd, 1, 0);
168 recv_byte(fd, 0, 0);
169 close(fd);
170 }
171
172 static void test_stream_server_close_client(const struct test_opts *opts)
173 {
174 int fd;
175
176 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
177 if (fd < 0) {
178 perror("connect");
179 exit(EXIT_FAILURE);
180 }
181
182 /* Wait for the remote to close the connection, before check
183 * -EPIPE error on send.
184 */
185 vsock_wait_remote_close(fd);
186
187 send_byte(fd, -EPIPE, 0);
188 recv_byte(fd, 1, 0);
189 recv_byte(fd, 0, 0);
190 close(fd);
191 }
192
193 static void test_stream_server_close_server(const struct test_opts *opts)
194 {
195 int fd;
196
197 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
198 if (fd < 0) {
199 perror("accept");
200 exit(EXIT_FAILURE);
201 }
202
203 send_byte(fd, 1, 0);
204 close(fd);
205 }
206
207 /* With the standard socket sizes, VMCI is able to support about 100
208 * concurrent stream connections.
209 */
210 #define MULTICONN_NFDS 100
211
212 static void test_stream_multiconn_client(const struct test_opts *opts)
213 {
214 int fds[MULTICONN_NFDS];
215 int i;
216
217 for (i = 0; i < MULTICONN_NFDS; i++) {
218 fds[i] = vsock_stream_connect(opts->peer_cid, opts->peer_port);
219 if (fds[i] < 0) {
220 perror("connect");
221 exit(EXIT_FAILURE);
222 }
223 }
224
225 for (i = 0; i < MULTICONN_NFDS; i++) {
226 if (i % 2)
227 recv_byte(fds[i], 1, 0);
228 else
229 send_byte(fds[i], 1, 0);
230 }
231
232 for (i = 0; i < MULTICONN_NFDS; i++)
233 close(fds[i]);
234 }
235
236 static void test_stream_multiconn_server(const struct test_opts *opts)
237 {
238 int fds[MULTICONN_NFDS];
239 int i;
240
241 for (i = 0; i < MULTICONN_NFDS; i++) {
242 fds[i] = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
243 if (fds[i] < 0) {
244 perror("accept");
245 exit(EXIT_FAILURE);
246 }
247 }
248
249 for (i = 0; i < MULTICONN_NFDS; i++) {
250 if (i % 2)
251 send_byte(fds[i], 1, 0);
252 else
253 recv_byte(fds[i], 1, 0);
254 }
255
256 for (i = 0; i < MULTICONN_NFDS; i++)
257 close(fds[i]);
258 }
259
260 #define MSG_PEEK_BUF_LEN 64
261
262 static void test_msg_peek_client(const struct test_opts *opts,
263 bool seqpacket)
264 {
265 unsigned char buf[MSG_PEEK_BUF_LEN];
266 int fd;
267 int i;
268
269 if (seqpacket)
270 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
271 else
272 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
273
274 if (fd < 0) {
275 perror("connect");
276 exit(EXIT_FAILURE);
277 }
278
279 for (i = 0; i < sizeof(buf); i++)
280 buf[i] = rand() & 0xFF;
281
282 control_expectln("SRVREADY");
283
284 send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
285
286 close(fd);
287 }
288
289 static void test_msg_peek_server(const struct test_opts *opts,
290 bool seqpacket)
291 {
292 unsigned char buf_half[MSG_PEEK_BUF_LEN / 2];
293 unsigned char buf_normal[MSG_PEEK_BUF_LEN];
294 unsigned char buf_peek[MSG_PEEK_BUF_LEN];
295 int fd;
296
297 if (seqpacket)
298 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
299 else
300 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
301
302 if (fd < 0) {
303 perror("accept");
304 exit(EXIT_FAILURE);
305 }
306
307 /* Peek from empty socket. */
308 recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK | MSG_DONTWAIT,
309 -EAGAIN);
310
311 control_writeln("SRVREADY");
312
313 /* Peek part of data. */
314 recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK, sizeof(buf_half));
315
316 /* Peek whole data. */
317 recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK, sizeof(buf_peek));
318
319 /* Compare partial and full peek. */
320 if (memcmp(buf_half, buf_peek, sizeof(buf_half))) {
321 fprintf(stderr, "Partial peek data mismatch\n");
322 exit(EXIT_FAILURE);
323 }
324
325 if (seqpacket) {
326 /* This type of socket supports MSG_TRUNC flag,
327 * so check it with MSG_PEEK. We must get length
328 * of the message.
329 */
330 recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK | MSG_TRUNC,
331 sizeof(buf_peek));
332 }
333
334 recv_buf(fd, buf_normal, sizeof(buf_normal), 0, sizeof(buf_normal));
335
336 /* Compare full peek and normal read. */
337 if (memcmp(buf_peek, buf_normal, sizeof(buf_peek))) {
338 fprintf(stderr, "Full peek data mismatch\n");
339 exit(EXIT_FAILURE);
340 }
341
342 close(fd);
343 }
344
345 static void test_stream_msg_peek_client(const struct test_opts *opts)
346 {
347 return test_msg_peek_client(opts, false);
348 }
349
350 static void test_stream_msg_peek_server(const struct test_opts *opts)
351 {
352 return test_msg_peek_server(opts, false);
353 }
354
355 #define SOCK_BUF_SIZE (2 * 1024 * 1024)
356 #define MAX_MSG_PAGES 4
357
358 static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
359 {
360 unsigned long curr_hash;
361 size_t max_msg_size;
362 int page_size;
363 int msg_count;
364 int fd;
365
366 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
367 if (fd < 0) {
368 perror("connect");
369 exit(EXIT_FAILURE);
370 }
371
372 /* Wait, until receiver sets buffer size. */
373 control_expectln("SRVREADY");
374
375 curr_hash = 0;
376 page_size = getpagesize();
377 max_msg_size = MAX_MSG_PAGES * page_size;
378 msg_count = SOCK_BUF_SIZE / max_msg_size;
379
380 for (int i = 0; i < msg_count; i++) {
381 size_t buf_size;
382 int flags;
383 void *buf;
384
385 /* Use "small" buffers and "big" buffers. */
386 if (i & 1)
387 buf_size = page_size +
388 (rand() % (max_msg_size - page_size));
389 else
390 buf_size = 1 + (rand() % page_size);
391
392 buf = malloc(buf_size);
393
394 if (!buf) {
395 perror("malloc");
396 exit(EXIT_FAILURE);
397 }
398
399 memset(buf, rand() & 0xff, buf_size);
400 /* Set at least one MSG_EOR + some random. */
401 if (i == (msg_count / 2) || (rand() & 1)) {
402 flags = MSG_EOR;
403 curr_hash++;
404 } else {
405 flags = 0;
406 }
407
408 send_buf(fd, buf, buf_size, flags, buf_size);
409
410 /*
411 * Hash sum is computed at both client and server in
412 * the same way:
413 * H += hash('message data')
414 * Such hash "controls" both data integrity and message
415 * bounds. After data exchange, both sums are compared
416 * using control socket, and if message bounds wasn't
417 * broken - two values must be equal.
418 */
419 curr_hash += hash_djb2(buf, buf_size);
420 free(buf);
421 }
422
423 control_writeln("SENDDONE");
424 control_writeulong(curr_hash);
425 close(fd);
426 }
427
428 static void test_seqpacket_msg_bounds_server(const struct test_opts *opts)
429 {
430 unsigned long sock_buf_size;
431 unsigned long remote_hash;
432 unsigned long curr_hash;
433 int fd;
434 struct msghdr msg = {0};
435 struct iovec iov = {0};
436
437 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
438 if (fd < 0) {
439 perror("accept");
440 exit(EXIT_FAILURE);
441 }
442
443 sock_buf_size = SOCK_BUF_SIZE;
444
445 if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_MAX_SIZE,
446 &sock_buf_size, sizeof(sock_buf_size))) {
447 perror("setsockopt(SO_VM_SOCKETS_BUFFER_MAX_SIZE)");
448 exit(EXIT_FAILURE);
449 }
450
451 if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
452 &sock_buf_size, sizeof(sock_buf_size))) {
453 perror("setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
454 exit(EXIT_FAILURE);
455 }
456
457 /* Ready to receive data. */
458 control_writeln("SRVREADY");
459 /* Wait, until peer sends whole data. */
460 control_expectln("SENDDONE");
461 iov.iov_len = MAX_MSG_PAGES * getpagesize();
462 iov.iov_base = malloc(iov.iov_len);
463 if (!iov.iov_base) {
464 perror("malloc");
465 exit(EXIT_FAILURE);
466 }
467
468 msg.msg_iov = &iov;
469 msg.msg_iovlen = 1;
470
471 curr_hash = 0;
472
473 while (1) {
474 ssize_t recv_size;
475
476 recv_size = recvmsg(fd, &msg, 0);
477
478 if (!recv_size)
479 break;
480
481 if (recv_size < 0) {
482 perror("recvmsg");
483 exit(EXIT_FAILURE);
484 }
485
486 if (msg.msg_flags & MSG_EOR)
487 curr_hash++;
488
489 curr_hash += hash_djb2(msg.msg_iov[0].iov_base, recv_size);
490 }
491
492 free(iov.iov_base);
493 close(fd);
494 remote_hash = control_readulong();
495
496 if (curr_hash != remote_hash) {
497 fprintf(stderr, "Message bounds broken\n");
498 exit(EXIT_FAILURE);
499 }
500 }
501
502 #define MESSAGE_TRUNC_SZ 32
503 static void test_seqpacket_msg_trunc_client(const struct test_opts *opts)
504 {
505 int fd;
506 char buf[MESSAGE_TRUNC_SZ];
507
508 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
509 if (fd < 0) {
510 perror("connect");
511 exit(EXIT_FAILURE);
512 }
513
514 send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
515
516 control_writeln("SENDDONE");
517 close(fd);
518 }
519
520 static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
521 {
522 int fd;
523 char buf[MESSAGE_TRUNC_SZ / 2];
524 struct msghdr msg = {0};
525 struct iovec iov = {0};
526
527 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
528 if (fd < 0) {
529 perror("accept");
530 exit(EXIT_FAILURE);
531 }
532
533 control_expectln("SENDDONE");
534 iov.iov_base = buf;
535 iov.iov_len = sizeof(buf);
536 msg.msg_iov = &iov;
537 msg.msg_iovlen = 1;
538
539 ssize_t ret = recvmsg(fd, &msg, MSG_TRUNC);
540
541 if (ret != MESSAGE_TRUNC_SZ) {
542 printf("%zi\n", ret);
543 perror("MSG_TRUNC doesn't work");
544 exit(EXIT_FAILURE);
545 }
546
547 if (!(msg.msg_flags & MSG_TRUNC)) {
548 fprintf(stderr, "MSG_TRUNC expected\n");
549 exit(EXIT_FAILURE);
550 }
551
552 close(fd);
553 }
554
555 static time_t current_nsec(void)
556 {
557 struct timespec ts;
558
559 if (clock_gettime(CLOCK_REALTIME, &ts)) {
560 perror("clock_gettime(3) failed");
561 exit(EXIT_FAILURE);
562 }
563
564 return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
565 }
566
567 #define RCVTIMEO_TIMEOUT_SEC 1
568 #define READ_OVERHEAD_NSEC 250000000 /* 0.25 sec */
569
570 static void test_seqpacket_timeout_client(const struct test_opts *opts)
571 {
572 int fd;
573 struct timeval tv;
574 char dummy;
575 time_t read_enter_ns;
576 time_t read_overhead_ns;
577
578 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
579 if (fd < 0) {
580 perror("connect");
581 exit(EXIT_FAILURE);
582 }
583
584 tv.tv_sec = RCVTIMEO_TIMEOUT_SEC;
585 tv.tv_usec = 0;
586
587 if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
588 perror("setsockopt(SO_RCVTIMEO)");
589 exit(EXIT_FAILURE);
590 }
591
592 read_enter_ns = current_nsec();
593
594 if (read(fd, &dummy, sizeof(dummy)) != -1) {
595 fprintf(stderr,
596 "expected 'dummy' read(2) failure\n");
597 exit(EXIT_FAILURE);
598 }
599
600 if (errno != EAGAIN) {
601 perror("EAGAIN expected");
602 exit(EXIT_FAILURE);
603 }
604
605 read_overhead_ns = current_nsec() - read_enter_ns -
606 1000000000ULL * RCVTIMEO_TIMEOUT_SEC;
607
608 if (read_overhead_ns > READ_OVERHEAD_NSEC) {
609 fprintf(stderr,
610 "too much time in read(2), %lu > %i ns\n",
611 read_overhead_ns, READ_OVERHEAD_NSEC);
612 exit(EXIT_FAILURE);
613 }
614
615 control_writeln("WAITDONE");
616 close(fd);
617 }
618
619 static void test_seqpacket_timeout_server(const struct test_opts *opts)
620 {
621 int fd;
622
623 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
624 if (fd < 0) {
625 perror("accept");
626 exit(EXIT_FAILURE);
627 }
628
629 control_expectln("WAITDONE");
630 close(fd);
631 }
632
633 static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
634 {
635 unsigned long sock_buf_size;
636 socklen_t len;
637 void *data;
638 int fd;
639
640 len = sizeof(sock_buf_size);
641
642 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
643 if (fd < 0) {
644 perror("connect");
645 exit(EXIT_FAILURE);
646 }
647
648 if (getsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
649 &sock_buf_size, &len)) {
650 perror("getsockopt");
651 exit(EXIT_FAILURE);
652 }
653
654 sock_buf_size++;
655
656 data = malloc(sock_buf_size);
657 if (!data) {
658 perror("malloc");
659 exit(EXIT_FAILURE);
660 }
661
662 send_buf(fd, data, sock_buf_size, 0, -EMSGSIZE);
663
664 control_writeln("CLISENT");
665
666 free(data);
667 close(fd);
668 }
669
670 static void test_seqpacket_bigmsg_server(const struct test_opts *opts)
671 {
672 int fd;
673
674 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
675 if (fd < 0) {
676 perror("accept");
677 exit(EXIT_FAILURE);
678 }
679
680 control_expectln("CLISENT");
681
682 close(fd);
683 }
684
685 #define BUF_PATTERN_1 'a'
686 #define BUF_PATTERN_2 'b'
687
688 static void test_seqpacket_invalid_rec_buffer_client(const struct test_opts *opts)
689 {
690 int fd;
691 unsigned char *buf1;
692 unsigned char *buf2;
693 int buf_size = getpagesize() * 3;
694
695 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
696 if (fd < 0) {
697 perror("connect");
698 exit(EXIT_FAILURE);
699 }
700
701 buf1 = malloc(buf_size);
702 if (!buf1) {
703 perror("'malloc()' for 'buf1'");
704 exit(EXIT_FAILURE);
705 }
706
707 buf2 = malloc(buf_size);
708 if (!buf2) {
709 perror("'malloc()' for 'buf2'");
710 exit(EXIT_FAILURE);
711 }
712
713 memset(buf1, BUF_PATTERN_1, buf_size);
714 memset(buf2, BUF_PATTERN_2, buf_size);
715
716 send_buf(fd, buf1, buf_size, 0, buf_size);
717
718 send_buf(fd, buf2, buf_size, 0, buf_size);
719
720 close(fd);
721 }
722
723 static void test_seqpacket_invalid_rec_buffer_server(const struct test_opts *opts)
724 {
725 int fd;
726 unsigned char *broken_buf;
727 unsigned char *valid_buf;
728 int page_size = getpagesize();
729 int buf_size = page_size * 3;
730 ssize_t res;
731 int prot = PROT_READ | PROT_WRITE;
732 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
733 int i;
734
735 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
736 if (fd < 0) {
737 perror("accept");
738 exit(EXIT_FAILURE);
739 }
740
741 /* Setup first buffer. */
742 broken_buf = mmap(NULL, buf_size, prot, flags, -1, 0);
743 if (broken_buf == MAP_FAILED) {
744 perror("mmap for 'broken_buf'");
745 exit(EXIT_FAILURE);
746 }
747
748 /* Unmap "hole" in buffer. */
749 if (munmap(broken_buf + page_size, page_size)) {
750 perror("'broken_buf' setup");
751 exit(EXIT_FAILURE);
752 }
753
754 valid_buf = mmap(NULL, buf_size, prot, flags, -1, 0);
755 if (valid_buf == MAP_FAILED) {
756 perror("mmap for 'valid_buf'");
757 exit(EXIT_FAILURE);
758 }
759
760 /* Try to fill buffer with unmapped middle. */
761 res = read(fd, broken_buf, buf_size);
762 if (res != -1) {
763 fprintf(stderr,
764 "expected 'broken_buf' read(2) failure, got %zi\n",
765 res);
766 exit(EXIT_FAILURE);
767 }
768
769 if (errno != EFAULT) {
770 perror("unexpected errno of 'broken_buf'");
771 exit(EXIT_FAILURE);
772 }
773
774 /* Try to fill valid buffer. */
775 res = read(fd, valid_buf, buf_size);
776 if (res < 0) {
777 perror("unexpected 'valid_buf' read(2) failure");
778 exit(EXIT_FAILURE);
779 }
780
781 if (res != buf_size) {
782 fprintf(stderr,
783 "invalid 'valid_buf' read(2), expected %i, got %zi\n",
784 buf_size, res);
785 exit(EXIT_FAILURE);
786 }
787
788 for (i = 0; i < buf_size; i++) {
789 if (valid_buf[i] != BUF_PATTERN_2) {
790 fprintf(stderr,
791 "invalid pattern for 'valid_buf' at %i, expected %hhX, got %hhX\n",
792 i, BUF_PATTERN_2, valid_buf[i]);
793 exit(EXIT_FAILURE);
794 }
795 }
796
797 /* Unmap buffers. */
798 munmap(broken_buf, page_size);
799 munmap(broken_buf + page_size * 2, page_size);
800 munmap(valid_buf, buf_size);
801 close(fd);
802 }
803
804 #define RCVLOWAT_BUF_SIZE 128
805
806 static void test_stream_poll_rcvlowat_server(const struct test_opts *opts)
807 {
808 int fd;
809 int i;
810
811 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
812 if (fd < 0) {
813 perror("accept");
814 exit(EXIT_FAILURE);
815 }
816
817 /* Send 1 byte. */
818 send_byte(fd, 1, 0);
819
820 control_writeln("SRVSENT");
821
822 /* Wait until client is ready to receive rest of data. */
823 control_expectln("CLNSENT");
824
825 for (i = 0; i < RCVLOWAT_BUF_SIZE - 1; i++)
826 send_byte(fd, 1, 0);
827
828 /* Keep socket in active state. */
829 control_expectln("POLLDONE");
830
831 close(fd);
832 }
833
834 static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
835 {
836 unsigned long lowat_val = RCVLOWAT_BUF_SIZE;
837 char buf[RCVLOWAT_BUF_SIZE];
838 struct pollfd fds;
839 short poll_flags;
840 int fd;
841
842 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
843 if (fd < 0) {
844 perror("connect");
845 exit(EXIT_FAILURE);
846 }
847
848 if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
849 &lowat_val, sizeof(lowat_val))) {
850 perror("setsockopt(SO_RCVLOWAT)");
851 exit(EXIT_FAILURE);
852 }
853
854 control_expectln("SRVSENT");
855
856 /* At this point, server sent 1 byte. */
857 fds.fd = fd;
858 poll_flags = POLLIN | POLLRDNORM;
859 fds.events = poll_flags;
860
861 /* Try to wait for 1 sec. */
862 if (poll(&fds, 1, 1000) < 0) {
863 perror("poll");
864 exit(EXIT_FAILURE);
865 }
866
867 /* poll() must return nothing. */
868 if (fds.revents) {
869 fprintf(stderr, "Unexpected poll result %hx\n",
870 fds.revents);
871 exit(EXIT_FAILURE);
872 }
873
874 /* Tell server to send rest of data. */
875 control_writeln("CLNSENT");
876
877 /* Poll for data. */
878 if (poll(&fds, 1, 10000) < 0) {
879 perror("poll");
880 exit(EXIT_FAILURE);
881 }
882
883 /* Only these two bits are expected. */
884 if (fds.revents != poll_flags) {
885 fprintf(stderr, "Unexpected poll result %hx\n",
886 fds.revents);
887 exit(EXIT_FAILURE);
888 }
889
890 /* Use MSG_DONTWAIT, if call is going to wait, EAGAIN
891 * will be returned.
892 */
893 recv_buf(fd, buf, sizeof(buf), MSG_DONTWAIT, RCVLOWAT_BUF_SIZE);
894
895 control_writeln("POLLDONE");
896
897 close(fd);
898 }
899
900 #define INV_BUF_TEST_DATA_LEN 512
901
902 static void test_inv_buf_client(const struct test_opts *opts, bool stream)
903 {
904 unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
905 ssize_t expected_ret;
906 int fd;
907
908 if (stream)
909 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
910 else
911 fd = vsock_seqpacket_connect(opts->peer_cid, opts->peer_port);
912
913 if (fd < 0) {
914 perror("connect");
915 exit(EXIT_FAILURE);
916 }
917
918 control_expectln("SENDDONE");
919
920 /* Use invalid buffer here. */
921 recv_buf(fd, NULL, sizeof(data), 0, -EFAULT);
922
923 if (stream) {
924 /* For SOCK_STREAM we must continue reading. */
925 expected_ret = sizeof(data);
926 } else {
927 /* For SOCK_SEQPACKET socket's queue must be empty. */
928 expected_ret = -EAGAIN;
929 }
930
931 recv_buf(fd, data, sizeof(data), MSG_DONTWAIT, expected_ret);
932
933 control_writeln("DONE");
934
935 close(fd);
936 }
937
938 static void test_inv_buf_server(const struct test_opts *opts, bool stream)
939 {
940 unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
941 int fd;
942
943 if (stream)
944 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
945 else
946 fd = vsock_seqpacket_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
947
948 if (fd < 0) {
949 perror("accept");
950 exit(EXIT_FAILURE);
951 }
952
953 send_buf(fd, data, sizeof(data), 0, sizeof(data));
954
955 control_writeln("SENDDONE");
956
957 control_expectln("DONE");
958
959 close(fd);
960 }
961
962 static void test_stream_inv_buf_client(const struct test_opts *opts)
963 {
964 test_inv_buf_client(opts, true);
965 }
966
967 static void test_stream_inv_buf_server(const struct test_opts *opts)
968 {
969 test_inv_buf_server(opts, true);
970 }
971
972 static void test_seqpacket_inv_buf_client(const struct test_opts *opts)
973 {
974 test_inv_buf_client(opts, false);
975 }
976
977 static void test_seqpacket_inv_buf_server(const struct test_opts *opts)
978 {
979 test_inv_buf_server(opts, false);
980 }
981
982 #define HELLO_STR "HELLO"
983 #define WORLD_STR "WORLD"
984
985 static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
986 {
987 int fd;
988
989 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
990 if (fd < 0) {
991 perror("connect");
992 exit(EXIT_FAILURE);
993 }
994
995 /* Send first skbuff. */
996 send_buf(fd, HELLO_STR, strlen(HELLO_STR), 0, strlen(HELLO_STR));
997
998 control_writeln("SEND0");
999 /* Peer reads part of first skbuff. */
1000 control_expectln("REPLY0");
1001
1002 /* Send second skbuff, it will be appended to the first. */
1003 send_buf(fd, WORLD_STR, strlen(WORLD_STR), 0, strlen(WORLD_STR));
1004
1005 control_writeln("SEND1");
1006 /* Peer reads merged skbuff packet. */
1007 control_expectln("REPLY1");
1008
1009 close(fd);
1010 }
1011
1012 static void test_stream_virtio_skb_merge_server(const struct test_opts *opts)
1013 {
1014 size_t read = 0, to_read;
1015 unsigned char buf[64];
1016 int fd;
1017
1018 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
1019 if (fd < 0) {
1020 perror("accept");
1021 exit(EXIT_FAILURE);
1022 }
1023
1024 control_expectln("SEND0");
1025
1026 /* Read skbuff partially. */
1027 to_read = 2;
1028 recv_buf(fd, buf + read, to_read, 0, to_read);
1029 read += to_read;
1030
1031 control_writeln("REPLY0");
1032 control_expectln("SEND1");
1033
1034 /* Read the rest of both buffers */
1035 to_read = strlen(HELLO_STR WORLD_STR) - read;
1036 recv_buf(fd, buf + read, to_read, 0, to_read);
1037 read += to_read;
1038
1039 /* No more bytes should be there */
1040 to_read = sizeof(buf) - read;
1041 recv_buf(fd, buf + read, to_read, MSG_DONTWAIT, -EAGAIN);
1042
1043 if (memcmp(buf, HELLO_STR WORLD_STR, strlen(HELLO_STR WORLD_STR))) {
1044 fprintf(stderr, "pattern mismatch\n");
1045 exit(EXIT_FAILURE);
1046 }
1047
1048 control_writeln("REPLY1");
1049
1050 close(fd);
1051 }
1052
1053 static void test_seqpacket_msg_peek_client(const struct test_opts *opts)
1054 {
1055 return test_msg_peek_client(opts, true);
1056 }
1057
1058 static void test_seqpacket_msg_peek_server(const struct test_opts *opts)
1059 {
1060 return test_msg_peek_server(opts, true);
1061 }
1062
1063 static sig_atomic_t have_sigpipe;
1064
1065 static void sigpipe(int signo)
1066 {
1067 have_sigpipe = 1;
1068 }
1069
1070 static void test_stream_check_sigpipe(int fd)
1071 {
1072 ssize_t res;
1073
1074 have_sigpipe = 0;
1075
1076 res = send(fd, "A", 1, 0);
1077 if (res != -1) {
1078 fprintf(stderr, "expected send(2) failure, got %zi\n", res);
1079 exit(EXIT_FAILURE);
1080 }
1081
1082 if (!have_sigpipe) {
1083 fprintf(stderr, "SIGPIPE expected\n");
1084 exit(EXIT_FAILURE);
1085 }
1086
1087 have_sigpipe = 0;
1088
1089 res = send(fd, "A", 1, MSG_NOSIGNAL);
1090 if (res != -1) {
1091 fprintf(stderr, "expected send(2) failure, got %zi\n", res);
1092 exit(EXIT_FAILURE);
1093 }
1094
1095 if (have_sigpipe) {
1096 fprintf(stderr, "SIGPIPE not expected\n");
1097 exit(EXIT_FAILURE);
1098 }
1099 }
1100
1101 static void test_stream_shutwr_client(const struct test_opts *opts)
1102 {
1103 int fd;
1104
1105 struct sigaction act = {
1106 .sa_handler = sigpipe,
1107 };
1108
1109 sigaction(SIGPIPE, &act, NULL);
1110
1111 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
1112 if (fd < 0) {
1113 perror("connect");
1114 exit(EXIT_FAILURE);
1115 }
1116
1117 if (shutdown(fd, SHUT_WR)) {
1118 perror("shutdown");
1119 exit(EXIT_FAILURE);
1120 }
1121
1122 test_stream_check_sigpipe(fd);
1123
1124 control_writeln("CLIENTDONE");
1125
1126 close(fd);
1127 }
1128
1129 static void test_stream_shutwr_server(const struct test_opts *opts)
1130 {
1131 int fd;
1132
1133 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
1134 if (fd < 0) {
1135 perror("accept");
1136 exit(EXIT_FAILURE);
1137 }
1138
1139 control_expectln("CLIENTDONE");
1140
1141 close(fd);
1142 }
1143
1144 static void test_stream_shutrd_client(const struct test_opts *opts)
1145 {
1146 int fd;
1147
1148 struct sigaction act = {
1149 .sa_handler = sigpipe,
1150 };
1151
1152 sigaction(SIGPIPE, &act, NULL);
1153
1154 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
1155 if (fd < 0) {
1156 perror("connect");
1157 exit(EXIT_FAILURE);
1158 }
1159
1160 control_expectln("SHUTRDDONE");
1161
1162 test_stream_check_sigpipe(fd);
1163
1164 control_writeln("CLIENTDONE");
1165
1166 close(fd);
1167 }
1168
1169 static void test_stream_shutrd_server(const struct test_opts *opts)
1170 {
1171 int fd;
1172
1173 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
1174 if (fd < 0) {
1175 perror("accept");
1176 exit(EXIT_FAILURE);
1177 }
1178
1179 if (shutdown(fd, SHUT_RD)) {
1180 perror("shutdown");
1181 exit(EXIT_FAILURE);
1182 }
1183
1184 control_writeln("SHUTRDDONE");
1185 control_expectln("CLIENTDONE");
1186
1187 close(fd);
1188 }
1189
1190 static void test_double_bind_connect_server(const struct test_opts *opts)
1191 {
1192 int listen_fd, client_fd, i;
1193 struct sockaddr_vm sa_client;
1194 socklen_t socklen_client = sizeof(sa_client);
1195
1196 listen_fd = vsock_stream_listen(VMADDR_CID_ANY, opts->peer_port);
1197
1198 for (i = 0; i < 2; i++) {
1199 control_writeln("LISTENING");
1200
1201 timeout_begin(TIMEOUT);
1202 do {
1203 client_fd = accept(listen_fd, (struct sockaddr *)&sa_client,
1204 &socklen_client);
1205 timeout_check("accept");
1206 } while (client_fd < 0 && errno == EINTR);
1207 timeout_end();
1208
1209 if (client_fd < 0) {
1210 perror("accept");
1211 exit(EXIT_FAILURE);
1212 }
1213
1214 /* Waiting for remote peer to close connection */
1215 vsock_wait_remote_close(client_fd);
1216 }
1217
1218 close(listen_fd);
1219 }
1220
1221 static void test_double_bind_connect_client(const struct test_opts *opts)
1222 {
1223 int i, client_fd;
1224
1225 for (i = 0; i < 2; i++) {
1226 /* Wait until server is ready to accept a new connection */
1227 control_expectln("LISTENING");
1228
1229 /* We use 'peer_port + 1' as "some" port for the 'bind()'
1230 * call. It is safe for overflow, but must be considered,
1231 * when running multiple test applications simultaneously
1232 * where 'peer-port' argument differs by 1.
1233 */
1234 client_fd = vsock_bind_connect(opts->peer_cid, opts->peer_port,
1235 opts->peer_port + 1, SOCK_STREAM);
1236
1237 close(client_fd);
1238 }
1239 }
1240
1241 #define RCVLOWAT_CREDIT_UPD_BUF_SIZE (1024 * 128)
1242 /* This define is the same as in 'include/linux/virtio_vsock.h':
1243 * it is used to decide when to send credit update message during
1244 * reading from rx queue of a socket. Value and its usage in
1245 * kernel is important for this test.
1246 */
1247 #define VIRTIO_VSOCK_MAX_PKT_BUF_SIZE (1024 * 64)
1248
1249 static void test_stream_rcvlowat_def_cred_upd_client(const struct test_opts *opts)
1250 {
1251 size_t buf_size;
1252 void *buf;
1253 int fd;
1254
1255 fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
1256 if (fd < 0) {
1257 perror("connect");
1258 exit(EXIT_FAILURE);
1259 }
1260
1261 /* Send 1 byte more than peer's buffer size. */
1262 buf_size = RCVLOWAT_CREDIT_UPD_BUF_SIZE + 1;
1263
1264 buf = malloc(buf_size);
1265 if (!buf) {
1266 perror("malloc");
1267 exit(EXIT_FAILURE);
1268 }
1269
1270 /* Wait until peer sets needed buffer size. */
1271 recv_byte(fd, 1, 0);
1272
1273 if (send(fd, buf, buf_size, 0) != buf_size) {
1274 perror("send failed");
1275 exit(EXIT_FAILURE);
1276 }
1277
1278 free(buf);
1279 close(fd);
1280 }
1281
1282 static void test_stream_credit_update_test(const struct test_opts *opts,
1283 bool low_rx_bytes_test)
1284 {
1285 size_t recv_buf_size;
1286 struct pollfd fds;
1287 size_t buf_size;
1288 void *buf;
1289 int fd;
1290
1291 fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
1292 if (fd < 0) {
1293 perror("accept");
1294 exit(EXIT_FAILURE);
1295 }
1296
1297 buf_size = RCVLOWAT_CREDIT_UPD_BUF_SIZE;
1298
1299 if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
1300 &buf_size, sizeof(buf_size))) {
1301 perror("setsockopt(SO_VM_SOCKETS_BUFFER_SIZE)");
1302 exit(EXIT_FAILURE);
1303 }
1304
1305 if (low_rx_bytes_test) {
1306 /* Set new SO_RCVLOWAT here. This enables sending credit
1307 * update when number of bytes if our rx queue become <
1308 * SO_RCVLOWAT value.
1309 */
1310 recv_buf_size = 1 + VIRTIO_VSOCK_MAX_PKT_BUF_SIZE;
1311
1312 if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
1313 &recv_buf_size, sizeof(recv_buf_size))) {
1314 perror("setsockopt(SO_RCVLOWAT)");
1315 exit(EXIT_FAILURE);
1316 }
1317 }
1318
1319 /* Send one dummy byte here, because 'setsockopt()' above also
1320 * sends special packet which tells sender to update our buffer
1321 * size. This 'send_byte()' will serialize such packet with data
1322 * reads in a loop below. Sender starts transmission only when
1323 * it receives this single byte.
1324 */
1325 send_byte(fd, 1, 0);
1326
1327 buf = malloc(buf_size);
1328 if (!buf) {
1329 perror("malloc");
1330 exit(EXIT_FAILURE);
1331 }
1332
1333 /* Wait until there will be 128KB of data in rx queue. */
1334 while (1) {
1335 ssize_t res;
1336
1337 res = recv(fd, buf, buf_size, MSG_PEEK);
1338 if (res == buf_size)
1339 break;
1340
1341 if (res <= 0) {
1342 fprintf(stderr, "unexpected 'recv()' return: %zi\n", res);
1343 exit(EXIT_FAILURE);
1344 }
1345 }
1346
1347 /* There is 128KB of data in the socket's rx queue, dequeue first
1348 * 64KB, credit update is sent if 'low_rx_bytes_test' == true.
1349 * Otherwise, credit update is sent in 'if (!low_rx_bytes_test)'.
1350 */
1351 recv_buf_size = VIRTIO_VSOCK_MAX_PKT_BUF_SIZE;
1352 recv_buf(fd, buf, recv_buf_size, 0, recv_buf_size);
1353
1354 if (!low_rx_bytes_test) {
1355 recv_buf_size++;
1356
1357 /* Updating SO_RCVLOWAT will send credit update. */
1358 if (setsockopt(fd, SOL_SOCKET, SO_RCVLOWAT,
1359 &recv_buf_size, sizeof(recv_buf_size))) {
1360 perror("setsockopt(SO_RCVLOWAT)");
1361 exit(EXIT_FAILURE);
1362 }
1363 }
1364
1365 fds.fd = fd;
1366 fds.events = POLLIN | POLLRDNORM | POLLERR |
1367 POLLRDHUP | POLLHUP;
1368
1369 /* This 'poll()' will return once we receive last byte
1370 * sent by client.
1371 */
1372 if (poll(&fds, 1, -1) < 0) {
1373 perror("poll");
1374 exit(EXIT_FAILURE);
1375 }
1376
1377 if (fds.revents & POLLERR) {
1378 fprintf(stderr, "'poll()' error\n");
1379 exit(EXIT_FAILURE);
1380 }
1381
1382 if (fds.revents & (POLLIN | POLLRDNORM)) {
1383 recv_buf(fd, buf, recv_buf_size, MSG_DONTWAIT, recv_buf_size);
1384 } else {
1385 /* These flags must be set, as there is at
1386 * least 64KB of data ready to read.
1387 */
1388 fprintf(stderr, "POLLIN | POLLRDNORM expected\n");
1389 exit(EXIT_FAILURE);
1390 }
1391
1392 free(buf);
1393 close(fd);
1394 }
1395
1396 static void test_stream_cred_upd_on_low_rx_bytes(const struct test_opts *opts)
1397 {
1398 test_stream_credit_update_test(opts, true);
1399 }
1400
1401 static void test_stream_cred_upd_on_set_rcvlowat(const struct test_opts *opts)
1402 {
1403 test_stream_credit_update_test(opts, false);
1404 }
1405
1406 static struct test_case test_cases[] = {
1407 {
1408 .name = "SOCK_STREAM connection reset",
1409 .run_client = test_stream_connection_reset,
1410 },
1411 {
1412 .name = "SOCK_STREAM bind only",
1413 .run_client = test_stream_bind_only_client,
1414 .run_server = test_stream_bind_only_server,
1415 },
1416 {
1417 .name = "SOCK_STREAM client close",
1418 .run_client = test_stream_client_close_client,
1419 .run_server = test_stream_client_close_server,
1420 },
1421 {
1422 .name = "SOCK_STREAM server close",
1423 .run_client = test_stream_server_close_client,
1424 .run_server = test_stream_server_close_server,
1425 },
1426 {
1427 .name = "SOCK_STREAM multiple connections",
1428 .run_client = test_stream_multiconn_client,
1429 .run_server = test_stream_multiconn_server,
1430 },
1431 {
1432 .name = "SOCK_STREAM MSG_PEEK",
1433 .run_client = test_stream_msg_peek_client,
1434 .run_server = test_stream_msg_peek_server,
1435 },
1436 {
1437 .name = "SOCK_SEQPACKET msg bounds",
1438 .run_client = test_seqpacket_msg_bounds_client,
1439 .run_server = test_seqpacket_msg_bounds_server,
1440 },
1441 {
1442 .name = "SOCK_SEQPACKET MSG_TRUNC flag",
1443 .run_client = test_seqpacket_msg_trunc_client,
1444 .run_server = test_seqpacket_msg_trunc_server,
1445 },
1446 {
1447 .name = "SOCK_SEQPACKET timeout",
1448 .run_client = test_seqpacket_timeout_client,
1449 .run_server = test_seqpacket_timeout_server,
1450 },
1451 {
1452 .name = "SOCK_SEQPACKET invalid receive buffer",
1453 .run_client = test_seqpacket_invalid_rec_buffer_client,
1454 .run_server = test_seqpacket_invalid_rec_buffer_server,
1455 },
1456 {
1457 .name = "SOCK_STREAM poll() + SO_RCVLOWAT",
1458 .run_client = test_stream_poll_rcvlowat_client,
1459 .run_server = test_stream_poll_rcvlowat_server,
1460 },
1461 {
1462 .name = "SOCK_SEQPACKET big message",
1463 .run_client = test_seqpacket_bigmsg_client,
1464 .run_server = test_seqpacket_bigmsg_server,
1465 },
1466 {
1467 .name = "SOCK_STREAM test invalid buffer",
1468 .run_client = test_stream_inv_buf_client,
1469 .run_server = test_stream_inv_buf_server,
1470 },
1471 {
1472 .name = "SOCK_SEQPACKET test invalid buffer",
1473 .run_client = test_seqpacket_inv_buf_client,
1474 .run_server = test_seqpacket_inv_buf_server,
1475 },
1476 {
1477 .name = "SOCK_STREAM virtio skb merge",
1478 .run_client = test_stream_virtio_skb_merge_client,
1479 .run_server = test_stream_virtio_skb_merge_server,
1480 },
1481 {
1482 .name = "SOCK_SEQPACKET MSG_PEEK",
1483 .run_client = test_seqpacket_msg_peek_client,
1484 .run_server = test_seqpacket_msg_peek_server,
1485 },
1486 {
1487 .name = "SOCK_STREAM SHUT_WR",
1488 .run_client = test_stream_shutwr_client,
1489 .run_server = test_stream_shutwr_server,
1490 },
1491 {
1492 .name = "SOCK_STREAM SHUT_RD",
1493 .run_client = test_stream_shutrd_client,
1494 .run_server = test_stream_shutrd_server,
1495 },
1496 {
1497 .name = "SOCK_STREAM MSG_ZEROCOPY",
1498 .run_client = test_stream_msgzcopy_client,
1499 .run_server = test_stream_msgzcopy_server,
1500 },
1501 {
1502 .name = "SOCK_SEQPACKET MSG_ZEROCOPY",
1503 .run_client = test_seqpacket_msgzcopy_client,
1504 .run_server = test_seqpacket_msgzcopy_server,
1505 },
1506 {
1507 .name = "SOCK_STREAM MSG_ZEROCOPY empty MSG_ERRQUEUE",
1508 .run_client = test_stream_msgzcopy_empty_errq_client,
1509 .run_server = test_stream_msgzcopy_empty_errq_server,
1510 },
1511 {
1512 .name = "SOCK_STREAM double bind connect",
1513 .run_client = test_double_bind_connect_client,
1514 .run_server = test_double_bind_connect_server,
1515 },
1516 {
1517 .name = "SOCK_STREAM virtio credit update + SO_RCVLOWAT",
1518 .run_client = test_stream_rcvlowat_def_cred_upd_client,
1519 .run_server = test_stream_cred_upd_on_set_rcvlowat,
1520 },
1521 {
1522 .name = "SOCK_STREAM virtio credit update + low rx_bytes",
1523 .run_client = test_stream_rcvlowat_def_cred_upd_client,
1524 .run_server = test_stream_cred_upd_on_low_rx_bytes,
1525 },
1526 {},
1527 };
1528
1529 static const char optstring[] = "";
1530 static const struct option longopts[] = {
1531 {
1532 .name = "control-host",
1533 .has_arg = required_argument,
1534 .val = 'H',
1535 },
1536 {
1537 .name = "control-port",
1538 .has_arg = required_argument,
1539 .val = 'P',
1540 },
1541 {
1542 .name = "mode",
1543 .has_arg = required_argument,
1544 .val = 'm',
1545 },
1546 {
1547 .name = "peer-cid",
1548 .has_arg = required_argument,
1549 .val = 'p',
1550 },
1551 {
1552 .name = "peer-port",
1553 .has_arg = required_argument,
1554 .val = 'q',
1555 },
1556 {
1557 .name = "list",
1558 .has_arg = no_argument,
1559 .val = 'l',
1560 },
1561 {
1562 .name = "skip",
1563 .has_arg = required_argument,
1564 .val = 's',
1565 },
1566 {
1567 .name = "help",
1568 .has_arg = no_argument,
1569 .val = '?',
1570 },
1571 {},
1572 };
1573
1574 static void usage(void)
1575 {
1576 fprintf(stderr, "Usage: vsock_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid> [--peer-port=<port>] [--list] [--skip=<test_id>]\n"
1577 "\n"
1578 " Server: vsock_test --control-port=1234 --mode=server --peer-cid=3\n"
1579 " Client: vsock_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
1580 "\n"
1581 "Run vsock.ko tests. Must be launched in both guest\n"
1582 "and host. One side must use --mode=client and\n"
1583 "the other side must use --mode=server.\n"
1584 "\n"
1585 "A TCP control socket connection is used to coordinate tests\n"
1586 "between the client and the server. The server requires a\n"
1587 "listen address and the client requires an address to\n"
1588 "connect to.\n"
1589 "\n"
1590 "The CID of the other side must be given with --peer-cid=<cid>.\n"
1591 "During the test, two AF_VSOCK ports will be used: the port\n"
1592 "specified with --peer-port=<port> (or the default port)\n"
1593 "and the next one.\n"
1594 "\n"
1595 "Options:\n"
1596 " --help This help message\n"
1597 " --control-host <host> Server IP address to connect to\n"
1598 " --control-port <port> Server port to listen on/connect to\n"
1599 " --mode client|server Server or client mode\n"
1600 " --peer-cid <cid> CID of the other side\n"
1601 " --peer-port <port> AF_VSOCK port used for the test [default: %d]\n"
1602 " --list List of tests that will be executed\n"
1603 " --skip <test_id> Test ID to skip;\n"
1604 " use multiple --skip options to skip more tests\n",
1605 DEFAULT_PEER_PORT
1606 );
1607 exit(EXIT_FAILURE);
1608 }
1609
1610 int main(int argc, char **argv)
1611 {
1612 const char *control_host = NULL;
1613 const char *control_port = NULL;
1614 struct test_opts opts = {
1615 .mode = TEST_MODE_UNSET,
1616 .peer_cid = VMADDR_CID_ANY,
1617 .peer_port = DEFAULT_PEER_PORT,
1618 };
1619
1620 srand(time(NULL));
1621 init_signals();
1622
1623 for (;;) {
1624 int opt = getopt_long(argc, argv, optstring, longopts, NULL);
1625
1626 if (opt == -1)
1627 break;
1628
1629 switch (opt) {
1630 case 'H':
1631 control_host = optarg;
1632 break;
1633 case 'm':
1634 if (strcmp(optarg, "client") == 0)
1635 opts.mode = TEST_MODE_CLIENT;
1636 else if (strcmp(optarg, "server") == 0)
1637 opts.mode = TEST_MODE_SERVER;
1638 else {
1639 fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
1640 return EXIT_FAILURE;
1641 }
1642 break;
1643 case 'p':
1644 opts.peer_cid = parse_cid(optarg);
1645 break;
1646 case 'q':
1647 opts.peer_port = parse_port(optarg);
1648 break;
1649 case 'P':
1650 control_port = optarg;
1651 break;
1652 case 'l':
1653 list_tests(test_cases);
1654 break;
1655 case 's':
1656 skip_test(test_cases, ARRAY_SIZE(test_cases) - 1,
1657 optarg);
1658 break;
1659 case '?':
1660 default:
1661 usage();
1662 }
1663 }
1664
1665 if (!control_port)
1666 usage();
1667 if (opts.mode == TEST_MODE_UNSET)
1668 usage();
1669 if (opts.peer_cid == VMADDR_CID_ANY)
1670 usage();
1671
1672 if (!control_host) {
1673 if (opts.mode != TEST_MODE_SERVER)
1674 usage();
1675 control_host = "0.0.0.0";
1676 }
1677
1678 control_init(control_host, control_port,
1679 opts.mode == TEST_MODE_SERVER);
1680
1681 run_tests(test_cases, &opts);
1682
1683 control_cleanup();
1684 return EXIT_SUCCESS;
1685 }
1686
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