Commit | Line | Data |
---|---|---|
eb50fd3a | 1 | // SPDX-License-Identifier: BSD-3-Clause |
6b0658f6 GKH |
2 | /* |
3 | * Loopback test application | |
4 | * | |
5 | * Copyright 2015 Google Inc. | |
6 | * Copyright 2015 Linaro Ltd. | |
7 | * | |
8 | * Provided under the three clause BSD license found in the LICENSE file. | |
9 | */ | |
10 | #include <errno.h> | |
11 | #include <fcntl.h> | |
12 | #include <stdio.h> | |
13 | #include <string.h> | |
14 | #include <stdlib.h> | |
9250c0ee AH |
15 | #include <stdint.h> |
16 | #include <poll.h> | |
6b0658f6 GKH |
17 | #include <sys/types.h> |
18 | #include <time.h> | |
19 | #include <unistd.h> | |
20 | #include <dirent.h> | |
3b90040d | 21 | #include <signal.h> |
6b0658f6 | 22 | |
3f830562 | 23 | #define MAX_NUM_DEVICES 10 |
6b0658f6 GKH |
24 | #define MAX_SYSFS_PATH 0x200 |
25 | #define CSV_MAX_LINE 0x1000 | |
26 | #define SYSFS_MAX_INT 0x20 | |
27 | #define MAX_STR_LEN 255 | |
6b0658f6 GKH |
28 | #define DEFAULT_ASYNC_TIMEOUT 200000 |
29 | ||
30 | struct dict { | |
31 | char *name; | |
32 | int type; | |
33 | }; | |
34 | ||
35 | static struct dict dict[] = { | |
36 | {"ping", 2}, | |
37 | {"transfer", 3}, | |
d5bc9607 GKH |
38 | {"sink", 4}, |
39 | {NULL,} /* list termination */ | |
6b0658f6 GKH |
40 | }; |
41 | ||
42 | struct loopback_results { | |
43 | float latency_avg; | |
44 | uint32_t latency_max; | |
45 | uint32_t latency_min; | |
46 | uint32_t latency_jitter; | |
47 | ||
48 | float request_avg; | |
49 | uint32_t request_max; | |
50 | uint32_t request_min; | |
51 | uint32_t request_jitter; | |
52 | ||
53 | float throughput_avg; | |
54 | uint32_t throughput_max; | |
55 | uint32_t throughput_min; | |
56 | uint32_t throughput_jitter; | |
57 | ||
58 | float apbridge_unipro_latency_avg; | |
59 | uint32_t apbridge_unipro_latency_max; | |
60 | uint32_t apbridge_unipro_latency_min; | |
61 | uint32_t apbridge_unipro_latency_jitter; | |
62 | ||
b797c432 AH |
63 | float gbphy_firmware_latency_avg; |
64 | uint32_t gbphy_firmware_latency_max; | |
65 | uint32_t gbphy_firmware_latency_min; | |
66 | uint32_t gbphy_firmware_latency_jitter; | |
6b0658f6 GKH |
67 | |
68 | uint32_t error; | |
69 | }; | |
70 | ||
71 | struct loopback_device { | |
72 | char name[MAX_SYSFS_PATH]; | |
73 | char sysfs_entry[MAX_SYSFS_PATH]; | |
74 | char debugfs_entry[MAX_SYSFS_PATH]; | |
6b0658f6 GKH |
75 | struct loopback_results results; |
76 | }; | |
77 | ||
78 | struct loopback_test { | |
79 | int verbose; | |
80 | int debug; | |
81 | int raw_data_dump; | |
82 | int porcelain; | |
83 | int mask; | |
84 | int size; | |
85 | int iteration_max; | |
86 | int aggregate_output; | |
87 | int test_id; | |
88 | int device_count; | |
6b0658f6 GKH |
89 | int list_devices; |
90 | int use_async; | |
91 | int async_timeout; | |
92 | int async_outstanding_operations; | |
93 | int us_wait; | |
5bee7608 | 94 | int file_output; |
346bae65 | 95 | int stop_all; |
9250c0ee | 96 | int poll_count; |
6b0658f6 GKH |
97 | char test_name[MAX_STR_LEN]; |
98 | char sysfs_prefix[MAX_SYSFS_PATH]; | |
99 | char debugfs_prefix[MAX_SYSFS_PATH]; | |
3b90040d | 100 | struct timespec poll_timeout; |
6b0658f6 GKH |
101 | struct loopback_device devices[MAX_NUM_DEVICES]; |
102 | struct loopback_results aggregate_results; | |
9250c0ee | 103 | struct pollfd fds[MAX_NUM_DEVICES]; |
6b0658f6 | 104 | }; |
9250c0ee | 105 | |
6b0658f6 GKH |
106 | struct loopback_test t; |
107 | ||
108 | /* Helper macros to calculate the aggregate results for all devices */ | |
109 | static inline int device_enabled(struct loopback_test *t, int dev_idx); | |
110 | ||
111 | #define GET_MAX(field) \ | |
112 | static int get_##field##_aggregate(struct loopback_test *t) \ | |
113 | { \ | |
114 | uint32_t max = 0; \ | |
115 | int i; \ | |
116 | for (i = 0; i < t->device_count; i++) { \ | |
117 | if (!device_enabled(t, i)) \ | |
118 | continue; \ | |
119 | if (t->devices[i].results.field > max) \ | |
120 | max = t->devices[i].results.field; \ | |
121 | } \ | |
122 | return max; \ | |
123 | } \ | |
124 | ||
125 | #define GET_MIN(field) \ | |
126 | static int get_##field##_aggregate(struct loopback_test *t) \ | |
127 | { \ | |
128 | uint32_t min = ~0; \ | |
129 | int i; \ | |
130 | for (i = 0; i < t->device_count; i++) { \ | |
131 | if (!device_enabled(t, i)) \ | |
132 | continue; \ | |
133 | if (t->devices[i].results.field < min) \ | |
134 | min = t->devices[i].results.field; \ | |
135 | } \ | |
136 | return min; \ | |
137 | } \ | |
138 | ||
139 | #define GET_AVG(field) \ | |
140 | static int get_##field##_aggregate(struct loopback_test *t) \ | |
141 | { \ | |
142 | uint32_t val = 0; \ | |
143 | uint32_t count = 0; \ | |
144 | int i; \ | |
145 | for (i = 0; i < t->device_count; i++) { \ | |
146 | if (!device_enabled(t, i)) \ | |
147 | continue; \ | |
148 | count++; \ | |
149 | val += t->devices[i].results.field; \ | |
150 | } \ | |
151 | if (count) \ | |
152 | val /= count; \ | |
153 | return val; \ | |
154 | } \ | |
155 | ||
156 | GET_MAX(throughput_max); | |
157 | GET_MAX(request_max); | |
158 | GET_MAX(latency_max); | |
159 | GET_MAX(apbridge_unipro_latency_max); | |
b797c432 | 160 | GET_MAX(gbphy_firmware_latency_max); |
6b0658f6 GKH |
161 | GET_MIN(throughput_min); |
162 | GET_MIN(request_min); | |
163 | GET_MIN(latency_min); | |
164 | GET_MIN(apbridge_unipro_latency_min); | |
b797c432 | 165 | GET_MIN(gbphy_firmware_latency_min); |
6b0658f6 GKH |
166 | GET_AVG(throughput_avg); |
167 | GET_AVG(request_avg); | |
168 | GET_AVG(latency_avg); | |
169 | GET_AVG(apbridge_unipro_latency_avg); | |
b797c432 | 170 | GET_AVG(gbphy_firmware_latency_avg); |
6b0658f6 | 171 | |
cbd8733c | 172 | void abort(void) |
6b0658f6 GKH |
173 | { |
174 | _exit(1); | |
175 | } | |
176 | ||
177 | void usage(void) | |
178 | { | |
179 | fprintf(stderr, "Usage: loopback_test TEST [SIZE] ITERATIONS [SYSPATH] [DBGPATH]\n\n" | |
180 | " Run TEST for a number of ITERATIONS with operation data SIZE bytes\n" | |
181 | " TEST may be \'ping\' \'transfer\' or \'sink\'\n" | |
182 | " SIZE indicates the size of transfer <= greybus max payload bytes\n" | |
183 | " ITERATIONS indicates the number of times to execute TEST at SIZE bytes\n" | |
184 | " Note if ITERATIONS is set to zero then this utility will\n" | |
185 | " initiate an infinite (non terminating) test and exit\n" | |
186 | " without logging any metrics data\n" | |
187 | " SYSPATH indicates the sysfs path for the loopback greybus entries e.g.\n" | |
188 | " /sys/bus/greybus/devices\n" | |
189 | " DBGPATH indicates the debugfs path for the loopback greybus entries e.g.\n" | |
190 | " /sys/kernel/debug/gb_loopback/\n" | |
191 | " Mandatory arguments\n" | |
192 | " -t must be one of the test names - sink, transfer or ping\n" | |
193 | " -i iteration count - the number of iterations to run the test over\n" | |
194 | " Optional arguments\n" | |
195 | " -S sysfs location - location for greybus 'endo' entires default /sys/bus/greybus/devices/\n" | |
196 | " -D debugfs location - location for loopback debugfs entries default /sys/kernel/debug/gb_loopback/\n" | |
197 | " -s size of data packet to send during test - defaults to zero\n" | |
198 | " -m mask - a bit mask of connections to include example: -m 8 = 4th connection -m 9 = 1st and 4th connection etc\n" | |
199 | " default is zero which means broadcast to all connections\n" | |
200 | " -v verbose output\n" | |
201 | " -d debug output\n" | |
202 | " -r raw data output - when specified the full list of latency values are included in the output CSV\n" | |
203 | " -p porcelain - when specified printout is in a user-friendly non-CSV format. This option suppresses writing to CSV file\n" | |
204 | " -a aggregate - show aggregation of all enabled devices\n" | |
205 | " -l list found loopback devices and exit\n" | |
206 | " -x Async - Enable async transfers\n" | |
207 | " -o Async Timeout - Timeout in uSec for async operations\n" | |
9250c0ee | 208 | " -O Poll loop time out in seconds(max time a test is expected to last, default: 30sec)\n" |
6b0658f6 GKH |
209 | " -c Max number of outstanding operations for async operations\n" |
210 | " -w Wait in uSec between operations\n" | |
5bee7608 | 211 | " -z Enable output to a CSV file (incompatible with -p)\n" |
346bae65 | 212 | " -f When starting new loopback test, stop currently running tests on all devices\n" |
6b0658f6 GKH |
213 | "Examples:\n" |
214 | " Send 10000 transfers with a packet size of 128 bytes to all active connections\n" | |
215 | " loopback_test -t transfer -s 128 -i 10000 -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n" | |
216 | " loopback_test -t transfer -s 128 -i 10000 -m 0\n" | |
217 | " Send 10000 transfers with a packet size of 128 bytes to connection 1 and 4\n" | |
218 | " loopback_test -t transfer -s 128 -i 10000 -m 9\n" | |
219 | " loopback_test -t ping -s 0 128 -i -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n" | |
220 | " loopback_test -t sink -s 2030 -i 32768 -S /sys/bus/greybus/devices/ -D /sys/kernel/debug/gb_loopback/\n"); | |
221 | abort(); | |
222 | } | |
223 | ||
224 | static inline int device_enabled(struct loopback_test *t, int dev_idx) | |
225 | { | |
226 | if (!t->mask || (t->mask & (1 << dev_idx))) | |
227 | return 1; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | static void show_loopback_devices(struct loopback_test *t) | |
233 | { | |
234 | int i; | |
235 | ||
236 | if (t->device_count == 0) { | |
237 | printf("No loopback devices.\n"); | |
238 | return; | |
239 | } | |
240 | ||
241 | for (i = 0; i < t->device_count; i++) | |
242 | printf("device[%d] = %s\n", i, t->devices[i].name); | |
243 | ||
244 | } | |
245 | ||
246 | int open_sysfs(const char *sys_pfx, const char *node, int flags) | |
247 | { | |
248 | int fd; | |
249 | char path[MAX_SYSFS_PATH]; | |
250 | ||
251 | snprintf(path, sizeof(path), "%s%s", sys_pfx, node); | |
252 | fd = open(path, flags); | |
253 | if (fd < 0) { | |
254 | fprintf(stderr, "unable to open %s\n", path); | |
255 | abort(); | |
256 | } | |
257 | return fd; | |
258 | } | |
259 | ||
260 | int read_sysfs_int_fd(int fd, const char *sys_pfx, const char *node) | |
261 | { | |
262 | char buf[SYSFS_MAX_INT]; | |
263 | ||
264 | if (read(fd, buf, sizeof(buf)) < 0) { | |
265 | fprintf(stderr, "unable to read from %s%s %s\n", sys_pfx, node, | |
266 | strerror(errno)); | |
267 | close(fd); | |
268 | abort(); | |
269 | } | |
270 | return atoi(buf); | |
271 | } | |
272 | ||
273 | float read_sysfs_float_fd(int fd, const char *sys_pfx, const char *node) | |
274 | { | |
275 | char buf[SYSFS_MAX_INT]; | |
276 | ||
277 | if (read(fd, buf, sizeof(buf)) < 0) { | |
278 | ||
279 | fprintf(stderr, "unable to read from %s%s %s\n", sys_pfx, node, | |
280 | strerror(errno)); | |
281 | close(fd); | |
282 | abort(); | |
283 | } | |
284 | return atof(buf); | |
285 | } | |
286 | ||
287 | int read_sysfs_int(const char *sys_pfx, const char *node) | |
288 | { | |
289 | int fd, val; | |
290 | ||
291 | fd = open_sysfs(sys_pfx, node, O_RDONLY); | |
292 | val = read_sysfs_int_fd(fd, sys_pfx, node); | |
293 | close(fd); | |
294 | return val; | |
295 | } | |
296 | ||
297 | float read_sysfs_float(const char *sys_pfx, const char *node) | |
298 | { | |
299 | int fd; | |
300 | float val; | |
301 | ||
302 | fd = open_sysfs(sys_pfx, node, O_RDONLY); | |
303 | val = read_sysfs_float_fd(fd, sys_pfx, node); | |
304 | close(fd); | |
305 | return val; | |
306 | } | |
307 | ||
308 | void write_sysfs_val(const char *sys_pfx, const char *node, int val) | |
309 | { | |
310 | int fd, len; | |
311 | char buf[SYSFS_MAX_INT]; | |
312 | ||
313 | fd = open_sysfs(sys_pfx, node, O_RDWR); | |
314 | len = snprintf(buf, sizeof(buf), "%d", val); | |
315 | if (write(fd, buf, len) < 0) { | |
316 | fprintf(stderr, "unable to write to %s%s %s\n", sys_pfx, node, | |
317 | strerror(errno)); | |
318 | close(fd); | |
319 | abort(); | |
320 | } | |
321 | close(fd); | |
322 | } | |
323 | ||
324 | static int get_results(struct loopback_test *t) | |
325 | { | |
326 | struct loopback_device *d; | |
327 | struct loopback_results *r; | |
328 | int i; | |
329 | ||
330 | for (i = 0; i < t->device_count; i++) { | |
331 | if (!device_enabled(t, i)) | |
332 | continue; | |
333 | ||
334 | d = &t->devices[i]; | |
335 | r = &d->results; | |
336 | ||
337 | r->error = read_sysfs_int(d->sysfs_entry, "error"); | |
338 | r->request_min = read_sysfs_int(d->sysfs_entry, "requests_per_second_min"); | |
339 | r->request_max = read_sysfs_int(d->sysfs_entry, "requests_per_second_max"); | |
340 | r->request_avg = read_sysfs_float(d->sysfs_entry, "requests_per_second_avg"); | |
341 | ||
342 | r->latency_min = read_sysfs_int(d->sysfs_entry, "latency_min"); | |
343 | r->latency_max = read_sysfs_int(d->sysfs_entry, "latency_max"); | |
344 | r->latency_avg = read_sysfs_float(d->sysfs_entry, "latency_avg"); | |
345 | ||
346 | r->throughput_min = read_sysfs_int(d->sysfs_entry, "throughput_min"); | |
347 | r->throughput_max = read_sysfs_int(d->sysfs_entry, "throughput_max"); | |
348 | r->throughput_avg = read_sysfs_float(d->sysfs_entry, "throughput_avg"); | |
349 | ||
350 | r->apbridge_unipro_latency_min = | |
351 | read_sysfs_int(d->sysfs_entry, "apbridge_unipro_latency_min"); | |
352 | r->apbridge_unipro_latency_max = | |
353 | read_sysfs_int(d->sysfs_entry, "apbridge_unipro_latency_max"); | |
354 | r->apbridge_unipro_latency_avg = | |
355 | read_sysfs_float(d->sysfs_entry, "apbridge_unipro_latency_avg"); | |
356 | ||
b797c432 AH |
357 | r->gbphy_firmware_latency_min = |
358 | read_sysfs_int(d->sysfs_entry, "gbphy_firmware_latency_min"); | |
359 | r->gbphy_firmware_latency_max = | |
360 | read_sysfs_int(d->sysfs_entry, "gbphy_firmware_latency_max"); | |
361 | r->gbphy_firmware_latency_avg = | |
362 | read_sysfs_float(d->sysfs_entry, "gbphy_firmware_latency_avg"); | |
6b0658f6 GKH |
363 | |
364 | r->request_jitter = r->request_max - r->request_min; | |
365 | r->latency_jitter = r->latency_max - r->latency_min; | |
366 | r->throughput_jitter = r->throughput_max - r->throughput_min; | |
367 | r->apbridge_unipro_latency_jitter = | |
368 | r->apbridge_unipro_latency_max - r->apbridge_unipro_latency_min; | |
b797c432 AH |
369 | r->gbphy_firmware_latency_jitter = |
370 | r->gbphy_firmware_latency_max - r->gbphy_firmware_latency_min; | |
6b0658f6 GKH |
371 | |
372 | } | |
373 | ||
374 | /*calculate the aggregate results of all enabled devices */ | |
375 | if (t->aggregate_output) { | |
376 | r = &t->aggregate_results; | |
377 | ||
378 | r->request_min = get_request_min_aggregate(t); | |
379 | r->request_max = get_request_max_aggregate(t); | |
380 | r->request_avg = get_request_avg_aggregate(t); | |
381 | ||
382 | r->latency_min = get_latency_min_aggregate(t); | |
383 | r->latency_max = get_latency_max_aggregate(t); | |
384 | r->latency_avg = get_latency_avg_aggregate(t); | |
385 | ||
386 | r->throughput_min = get_throughput_min_aggregate(t); | |
387 | r->throughput_max = get_throughput_max_aggregate(t); | |
388 | r->throughput_avg = get_throughput_avg_aggregate(t); | |
389 | ||
390 | r->apbridge_unipro_latency_min = | |
391 | get_apbridge_unipro_latency_min_aggregate(t); | |
392 | r->apbridge_unipro_latency_max = | |
393 | get_apbridge_unipro_latency_max_aggregate(t); | |
394 | r->apbridge_unipro_latency_avg = | |
395 | get_apbridge_unipro_latency_avg_aggregate(t); | |
396 | ||
b797c432 AH |
397 | r->gbphy_firmware_latency_min = |
398 | get_gbphy_firmware_latency_min_aggregate(t); | |
399 | r->gbphy_firmware_latency_max = | |
400 | get_gbphy_firmware_latency_max_aggregate(t); | |
401 | r->gbphy_firmware_latency_avg = | |
402 | get_gbphy_firmware_latency_avg_aggregate(t); | |
6b0658f6 GKH |
403 | |
404 | r->request_jitter = r->request_max - r->request_min; | |
405 | r->latency_jitter = r->latency_max - r->latency_min; | |
406 | r->throughput_jitter = r->throughput_max - r->throughput_min; | |
407 | r->apbridge_unipro_latency_jitter = | |
408 | r->apbridge_unipro_latency_max - r->apbridge_unipro_latency_min; | |
b797c432 AH |
409 | r->gbphy_firmware_latency_jitter = |
410 | r->gbphy_firmware_latency_max - r->gbphy_firmware_latency_min; | |
6b0658f6 GKH |
411 | |
412 | } | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | void log_csv_error(int len, int err) | |
418 | { | |
419 | fprintf(stderr, "unable to write %d bytes to csv %s\n", len, | |
420 | strerror(err)); | |
421 | } | |
422 | ||
423 | int format_output(struct loopback_test *t, | |
efd44cf4 SP |
424 | struct loopback_results *r, |
425 | const char *dev_name, | |
426 | char *buf, int buf_len, | |
427 | struct tm *tm) | |
6b0658f6 GKH |
428 | { |
429 | int len = 0; | |
430 | ||
431 | memset(buf, 0x00, buf_len); | |
432 | len = snprintf(buf, buf_len, "%u-%u-%u %u:%u:%u", | |
433 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, | |
434 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
435 | ||
436 | if (t->porcelain) { | |
437 | len += snprintf(&buf[len], buf_len - len, | |
438 | "\n test:\t\t\t%s\n path:\t\t\t%s\n size:\t\t\t%u\n iterations:\t\t%u\n errors:\t\t%u\n async:\t\t\t%s\n", | |
439 | t->test_name, | |
440 | dev_name, | |
441 | t->size, | |
442 | t->iteration_max, | |
443 | r->error, | |
444 | t->use_async ? "Enabled" : "Disabled"); | |
445 | ||
446 | len += snprintf(&buf[len], buf_len - len, | |
447 | " requests per-sec:\tmin=%u, max=%u, average=%f, jitter=%u\n", | |
448 | r->request_min, | |
449 | r->request_max, | |
450 | r->request_avg, | |
451 | r->request_jitter); | |
452 | ||
453 | len += snprintf(&buf[len], buf_len - len, | |
454 | " ap-throughput B/s:\tmin=%u max=%u average=%f jitter=%u\n", | |
455 | r->throughput_min, | |
456 | r->throughput_max, | |
457 | r->throughput_avg, | |
458 | r->throughput_jitter); | |
459 | len += snprintf(&buf[len], buf_len - len, | |
460 | " ap-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", | |
461 | r->latency_min, | |
462 | r->latency_max, | |
463 | r->latency_avg, | |
464 | r->latency_jitter); | |
465 | len += snprintf(&buf[len], buf_len - len, | |
466 | " apbridge-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", | |
467 | r->apbridge_unipro_latency_min, | |
468 | r->apbridge_unipro_latency_max, | |
469 | r->apbridge_unipro_latency_avg, | |
470 | r->apbridge_unipro_latency_jitter); | |
471 | ||
472 | len += snprintf(&buf[len], buf_len - len, | |
b797c432 AH |
473 | " gbphy-latency usec:\tmin=%u max=%u average=%f jitter=%u\n", |
474 | r->gbphy_firmware_latency_min, | |
475 | r->gbphy_firmware_latency_max, | |
476 | r->gbphy_firmware_latency_avg, | |
477 | r->gbphy_firmware_latency_jitter); | |
6b0658f6 GKH |
478 | |
479 | } else { | |
35fd2485 | 480 | len += snprintf(&buf[len], buf_len - len, ",%s,%s,%u,%u,%u", |
6b0658f6 GKH |
481 | t->test_name, dev_name, t->size, t->iteration_max, |
482 | r->error); | |
483 | ||
484 | len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", | |
485 | r->request_min, | |
486 | r->request_max, | |
487 | r->request_avg, | |
488 | r->request_jitter); | |
489 | ||
490 | len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", | |
491 | r->latency_min, | |
492 | r->latency_max, | |
493 | r->latency_avg, | |
494 | r->latency_jitter); | |
495 | ||
496 | len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", | |
497 | r->throughput_min, | |
498 | r->throughput_max, | |
499 | r->throughput_avg, | |
500 | r->throughput_jitter); | |
501 | ||
502 | len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", | |
503 | r->apbridge_unipro_latency_min, | |
504 | r->apbridge_unipro_latency_max, | |
505 | r->apbridge_unipro_latency_avg, | |
506 | r->apbridge_unipro_latency_jitter); | |
507 | ||
508 | len += snprintf(&buf[len], buf_len - len, ",%u,%u,%f,%u", | |
b797c432 AH |
509 | r->gbphy_firmware_latency_min, |
510 | r->gbphy_firmware_latency_max, | |
511 | r->gbphy_firmware_latency_avg, | |
512 | r->gbphy_firmware_latency_jitter); | |
6b0658f6 GKH |
513 | } |
514 | ||
515 | printf("\n%s\n", buf); | |
516 | ||
517 | return len; | |
518 | } | |
519 | ||
520 | static int log_results(struct loopback_test *t) | |
521 | { | |
522 | int fd, i, len, ret; | |
523 | struct tm tm; | |
524 | time_t local_time; | |
6b0658f6 GKH |
525 | char file_name[MAX_SYSFS_PATH]; |
526 | char data[CSV_MAX_LINE]; | |
527 | ||
528 | local_time = time(NULL); | |
529 | tm = *localtime(&local_time); | |
530 | ||
531 | /* | |
ac9735b9 AR |
532 | * file name will test_name_size_iteration_max.csv |
533 | * every time the same test with the same parameters is run we will then | |
534 | * append to the same CSV with datestamp - representing each test | |
535 | * dataset. | |
536 | */ | |
5bee7608 | 537 | if (t->file_output && !t->porcelain) { |
6b0658f6 | 538 | snprintf(file_name, sizeof(file_name), "%s_%d_%d.csv", |
efd44cf4 | 539 | t->test_name, t->size, t->iteration_max); |
6b0658f6 | 540 | |
e965af6b | 541 | fd = open(file_name, O_WRONLY | O_CREAT | O_APPEND, 0644); |
6b0658f6 GKH |
542 | if (fd < 0) { |
543 | fprintf(stderr, "unable to open %s for appendation\n", file_name); | |
544 | abort(); | |
545 | } | |
546 | ||
547 | } | |
548 | for (i = 0; i < t->device_count; i++) { | |
549 | if (!device_enabled(t, i)) | |
550 | continue; | |
551 | ||
552 | len = format_output(t, &t->devices[i].results, | |
efd44cf4 SP |
553 | t->devices[i].name, |
554 | data, sizeof(data), &tm); | |
5bee7608 | 555 | if (t->file_output && !t->porcelain) { |
6b0658f6 GKH |
556 | ret = write(fd, data, len); |
557 | if (ret == -1) | |
558 | fprintf(stderr, "unable to write %d bytes to csv.\n", len); | |
559 | } | |
560 | ||
561 | } | |
562 | ||
563 | ||
564 | if (t->aggregate_output) { | |
565 | len = format_output(t, &t->aggregate_results, "aggregate", | |
efd44cf4 | 566 | data, sizeof(data), &tm); |
5bee7608 | 567 | if (t->file_output && !t->porcelain) { |
6b0658f6 GKH |
568 | ret = write(fd, data, len); |
569 | if (ret == -1) | |
570 | fprintf(stderr, "unable to write %d bytes to csv.\n", len); | |
571 | } | |
572 | } | |
573 | ||
5bee7608 | 574 | if (t->file_output && !t->porcelain) |
6b0658f6 GKH |
575 | close(fd); |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
580 | int is_loopback_device(const char *path, const char *node) | |
581 | { | |
582 | char file[MAX_SYSFS_PATH]; | |
583 | ||
584 | snprintf(file, MAX_SYSFS_PATH, "%s%s/iteration_count", path, node); | |
585 | if (access(file, F_OK) == 0) | |
586 | return 1; | |
587 | return 0; | |
588 | } | |
589 | ||
590 | int find_loopback_devices(struct loopback_test *t) | |
591 | { | |
592 | struct dirent **namelist; | |
593 | int i, n, ret; | |
594 | unsigned int dev_id; | |
595 | struct loopback_device *d; | |
596 | ||
597 | n = scandir(t->sysfs_prefix, &namelist, NULL, alphasort); | |
598 | if (n < 0) { | |
599 | perror("scandir"); | |
600 | ret = -ENODEV; | |
601 | goto baddir; | |
602 | } | |
603 | ||
604 | /* Don't include '.' and '..' */ | |
605 | if (n <= 2) { | |
606 | ret = -ENOMEM; | |
607 | goto done; | |
608 | } | |
609 | ||
610 | for (i = 0; i < n; i++) { | |
611 | ret = sscanf(namelist[i]->d_name, "gb_loopback%u", &dev_id); | |
612 | if (ret != 1) | |
613 | continue; | |
614 | ||
615 | if (!is_loopback_device(t->sysfs_prefix, namelist[i]->d_name)) | |
616 | continue; | |
617 | ||
618 | if (t->device_count == MAX_NUM_DEVICES) { | |
619 | fprintf(stderr, "max number of devices reached!\n"); | |
620 | break; | |
621 | } | |
622 | ||
623 | d = &t->devices[t->device_count++]; | |
624 | snprintf(d->name, MAX_STR_LEN, "gb_loopback%u", dev_id); | |
625 | ||
626 | snprintf(d->sysfs_entry, MAX_SYSFS_PATH, "%s%s/", | |
efd44cf4 | 627 | t->sysfs_prefix, d->name); |
6b0658f6 GKH |
628 | |
629 | snprintf(d->debugfs_entry, MAX_SYSFS_PATH, "%sraw_latency_%s", | |
efd44cf4 | 630 | t->debugfs_prefix, d->name); |
6b0658f6 GKH |
631 | |
632 | if (t->debug) | |
efd44cf4 | 633 | printf("add %s %s\n", d->sysfs_entry, d->debugfs_entry); |
6b0658f6 GKH |
634 | } |
635 | ||
636 | ret = 0; | |
637 | done: | |
638 | for (i = 0; i < n; i++) | |
fea3860d | 639 | free(namelist[i]); |
6b0658f6 GKH |
640 | free(namelist); |
641 | baddir: | |
642 | return ret; | |
643 | } | |
644 | ||
9250c0ee | 645 | static int open_poll_files(struct loopback_test *t) |
6b0658f6 | 646 | { |
9250c0ee AH |
647 | struct loopback_device *dev; |
648 | char buf[MAX_STR_LEN]; | |
649 | char dummy; | |
650 | int fds_idx = 0; | |
6b0658f6 GKH |
651 | int i; |
652 | ||
6b0658f6 | 653 | for (i = 0; i < t->device_count; i++) { |
9250c0ee AH |
654 | dev = &t->devices[i]; |
655 | ||
6b0658f6 GKH |
656 | if (!device_enabled(t, i)) |
657 | continue; | |
658 | ||
9250c0ee AH |
659 | snprintf(buf, sizeof(buf), "%s%s", dev->sysfs_entry, "iteration_count"); |
660 | t->fds[fds_idx].fd = open(buf, O_RDONLY); | |
661 | if (t->fds[fds_idx].fd < 0) { | |
662 | fprintf(stderr, "Error opening poll file!\n"); | |
663 | goto err; | |
6b0658f6 | 664 | } |
9250c0ee | 665 | read(t->fds[fds_idx].fd, &dummy, 1); |
a9a08845 | 666 | t->fds[fds_idx].events = EPOLLERR|EPOLLPRI; |
9250c0ee AH |
667 | t->fds[fds_idx].revents = 0; |
668 | fds_idx++; | |
6b0658f6 GKH |
669 | } |
670 | ||
9250c0ee AH |
671 | t->poll_count = fds_idx; |
672 | ||
6b0658f6 | 673 | return 0; |
9250c0ee AH |
674 | |
675 | err: | |
676 | for (i = 0; i < fds_idx; i++) | |
6796cd84 | 677 | close(t->fds[i].fd); |
9250c0ee AH |
678 | |
679 | return -1; | |
6b0658f6 GKH |
680 | } |
681 | ||
9250c0ee | 682 | static int close_poll_files(struct loopback_test *t) |
6b0658f6 GKH |
683 | { |
684 | int i; | |
9250c0ee AH |
685 | for (i = 0; i < t->poll_count; i++) |
686 | close(t->fds[i].fd); | |
6b0658f6 | 687 | |
6b0658f6 GKH |
688 | return 0; |
689 | } | |
6b0658f6 GKH |
690 | static int is_complete(struct loopback_test *t) |
691 | { | |
6bfff1dc | 692 | int iteration_count; |
6b0658f6 GKH |
693 | int i; |
694 | ||
695 | for (i = 0; i < t->device_count; i++) { | |
696 | if (!device_enabled(t, i)) | |
697 | continue; | |
698 | ||
699 | iteration_count = read_sysfs_int(t->devices[i].sysfs_entry, | |
700 | "iteration_count"); | |
701 | ||
702 | /* at least one device did not finish yet */ | |
703 | if (iteration_count != t->iteration_max) | |
704 | return 0; | |
705 | } | |
706 | ||
707 | return 1; | |
708 | } | |
709 | ||
3b90040d AH |
710 | static void stop_tests(struct loopback_test *t) |
711 | { | |
712 | int i; | |
713 | ||
714 | for (i = 0; i < t->device_count; i++) { | |
715 | if (!device_enabled(t, i)) | |
716 | continue; | |
717 | write_sysfs_val(t->devices[i].sysfs_entry, "type", 0); | |
718 | } | |
719 | } | |
720 | ||
721 | static void handler(int sig) { /* do nothing */ } | |
722 | ||
6b0658f6 GKH |
723 | static int wait_for_complete(struct loopback_test *t) |
724 | { | |
9250c0ee AH |
725 | int number_of_events = 0; |
726 | char dummy; | |
6b0658f6 | 727 | int ret; |
9250c0ee | 728 | int i; |
3b90040d AH |
729 | struct timespec *ts = NULL; |
730 | struct sigaction sa; | |
731 | sigset_t mask_old, mask; | |
732 | ||
733 | sigemptyset(&mask); | |
734 | sigemptyset(&mask_old); | |
735 | sigaddset(&mask, SIGINT); | |
736 | sigprocmask(SIG_BLOCK, &mask, &mask_old); | |
737 | ||
738 | sa.sa_handler = handler; | |
739 | sa.sa_flags = 0; | |
740 | sigemptyset(&sa.sa_mask); | |
741 | if (sigaction(SIGINT, &sa, NULL) == -1) { | |
742 | fprintf(stderr, "sigaction error\n"); | |
743 | return -1; | |
744 | } | |
745 | ||
746 | if (t->poll_timeout.tv_sec != 0) | |
747 | ts = &t->poll_timeout; | |
6b0658f6 GKH |
748 | |
749 | while (1) { | |
6b0658f6 | 750 | |
3b90040d AH |
751 | ret = ppoll(t->fds, t->poll_count, ts, &mask_old); |
752 | if (ret <= 0) { | |
753 | stop_tests(t); | |
754 | fprintf(stderr, "Poll exit with errno %d\n", errno); | |
9250c0ee AH |
755 | return -1; |
756 | } | |
6b0658f6 | 757 | |
9250c0ee | 758 | for (i = 0; i < t->poll_count; i++) { |
a9a08845 | 759 | if (t->fds[i].revents & EPOLLPRI) { |
9250c0ee AH |
760 | /* Dummy read to clear the event */ |
761 | read(t->fds[i].fd, &dummy, 1); | |
762 | number_of_events++; | |
6b0658f6 | 763 | } |
6b0658f6 | 764 | } |
9250c0ee AH |
765 | |
766 | if (number_of_events == t->poll_count) | |
767 | break; | |
768 | } | |
769 | ||
770 | if (!is_complete(t)) { | |
771 | fprintf(stderr, "Iteration count did not finish!\n"); | |
772 | return -1; | |
6b0658f6 GKH |
773 | } |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | static void prepare_devices(struct loopback_test *t) | |
779 | { | |
780 | int i; | |
781 | ||
ac9735b9 AR |
782 | /* |
783 | * Cancel any running tests on enabled devices. If | |
346bae65 RL |
784 | * stop_all option is given, stop test on all devices. |
785 | */ | |
6b0658f6 | 786 | for (i = 0; i < t->device_count; i++) |
346bae65 | 787 | if (t->stop_all || device_enabled(t, i)) |
2861e207 | 788 | write_sysfs_val(t->devices[i].sysfs_entry, "type", 0); |
6b0658f6 GKH |
789 | |
790 | ||
791 | for (i = 0; i < t->device_count; i++) { | |
792 | if (!device_enabled(t, i)) | |
793 | continue; | |
794 | ||
795 | write_sysfs_val(t->devices[i].sysfs_entry, "us_wait", | |
796 | t->us_wait); | |
797 | ||
798 | /* Set operation size */ | |
799 | write_sysfs_val(t->devices[i].sysfs_entry, "size", t->size); | |
800 | ||
801 | /* Set iterations */ | |
802 | write_sysfs_val(t->devices[i].sysfs_entry, "iteration_max", | |
803 | t->iteration_max); | |
804 | ||
805 | if (t->use_async) { | |
efd44cf4 | 806 | write_sysfs_val(t->devices[i].sysfs_entry, "async", 1); |
6b0658f6 | 807 | write_sysfs_val(t->devices[i].sysfs_entry, |
efd44cf4 | 808 | "timeout", t->async_timeout); |
6b0658f6 | 809 | write_sysfs_val(t->devices[i].sysfs_entry, |
efd44cf4 SP |
810 | "outstanding_operations_max", |
811 | t->async_outstanding_operations); | |
6b0658f6 | 812 | } else |
efd44cf4 | 813 | write_sysfs_val(t->devices[i].sysfs_entry, "async", 0); |
6b0658f6 GKH |
814 | } |
815 | } | |
816 | ||
817 | static int start(struct loopback_test *t) | |
818 | { | |
819 | int i; | |
820 | ||
821 | /* the test starts by writing test_id to the type file. */ | |
822 | for (i = 0; i < t->device_count; i++) { | |
823 | if (!device_enabled(t, i)) | |
824 | continue; | |
825 | ||
826 | write_sysfs_val(t->devices[i].sysfs_entry, "type", t->test_id); | |
827 | } | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
832 | ||
833 | void loopback_run(struct loopback_test *t) | |
834 | { | |
835 | int i; | |
836 | int ret; | |
837 | ||
d5bc9607 | 838 | for (i = 0; dict[i].name != NULL; i++) { |
6b0658f6 GKH |
839 | if (strstr(dict[i].name, t->test_name)) |
840 | t->test_id = dict[i].type; | |
841 | } | |
842 | if (!t->test_id) { | |
843 | fprintf(stderr, "invalid test %s\n", t->test_name); | |
844 | usage(); | |
845 | return; | |
846 | } | |
847 | ||
848 | prepare_devices(t); | |
849 | ||
9250c0ee | 850 | ret = open_poll_files(t); |
6b0658f6 GKH |
851 | if (ret) |
852 | goto err; | |
853 | ||
854 | start(t); | |
855 | ||
9250c0ee AH |
856 | ret = wait_for_complete(t); |
857 | close_poll_files(t); | |
858 | if (ret) | |
859 | goto err; | |
6b0658f6 | 860 | |
6b0658f6 GKH |
861 | |
862 | get_results(t); | |
863 | ||
864 | log_results(t); | |
865 | ||
866 | return; | |
867 | ||
868 | err: | |
869 | printf("Error running test\n"); | |
870 | return; | |
871 | } | |
872 | ||
873 | static int sanity_check(struct loopback_test *t) | |
874 | { | |
875 | int i; | |
876 | ||
877 | if (t->device_count == 0) { | |
878 | fprintf(stderr, "No loopback devices found\n"); | |
879 | return -1; | |
880 | } | |
881 | ||
882 | for (i = 0; i < MAX_NUM_DEVICES; i++) { | |
883 | if (!device_enabled(t, i)) | |
884 | continue; | |
885 | ||
886 | if (t->mask && !strcmp(t->devices[i].name, "")) { | |
887 | fprintf(stderr, "Bad device mask %x\n", (1 << i)); | |
888 | return -1; | |
889 | } | |
890 | ||
891 | } | |
892 | ||
893 | ||
894 | return 0; | |
895 | } | |
3b90040d | 896 | |
6b0658f6 GKH |
897 | int main(int argc, char *argv[]) |
898 | { | |
899 | int o, ret; | |
900 | char *sysfs_prefix = "/sys/class/gb_loopback/"; | |
901 | char *debugfs_prefix = "/sys/kernel/debug/gb_loopback/"; | |
902 | ||
903 | memset(&t, 0, sizeof(t)); | |
904 | ||
905 | while ((o = getopt(argc, argv, | |
346bae65 | 906 | "t:s:i:S:D:m:v::d::r::p::a::l::x::o:O:c:w:z::f::")) != -1) { |
6b0658f6 GKH |
907 | switch (o) { |
908 | case 't': | |
909 | snprintf(t.test_name, MAX_STR_LEN, "%s", optarg); | |
910 | break; | |
911 | case 's': | |
912 | t.size = atoi(optarg); | |
913 | break; | |
914 | case 'i': | |
915 | t.iteration_max = atoi(optarg); | |
916 | break; | |
917 | case 'S': | |
918 | snprintf(t.sysfs_prefix, MAX_SYSFS_PATH, "%s", optarg); | |
919 | break; | |
920 | case 'D': | |
921 | snprintf(t.debugfs_prefix, MAX_SYSFS_PATH, "%s", optarg); | |
922 | break; | |
923 | case 'm': | |
924 | t.mask = atol(optarg); | |
925 | break; | |
926 | case 'v': | |
927 | t.verbose = 1; | |
928 | break; | |
929 | case 'd': | |
930 | t.debug = 1; | |
931 | break; | |
932 | case 'r': | |
933 | t.raw_data_dump = 1; | |
934 | break; | |
935 | case 'p': | |
936 | t.porcelain = 1; | |
937 | break; | |
938 | case 'a': | |
939 | t.aggregate_output = 1; | |
940 | break; | |
941 | case 'l': | |
942 | t.list_devices = 1; | |
943 | break; | |
944 | case 'x': | |
945 | t.use_async = 1; | |
946 | break; | |
947 | case 'o': | |
948 | t.async_timeout = atoi(optarg); | |
949 | break; | |
9250c0ee | 950 | case 'O': |
3b90040d | 951 | t.poll_timeout.tv_sec = atoi(optarg); |
9250c0ee | 952 | break; |
6b0658f6 GKH |
953 | case 'c': |
954 | t.async_outstanding_operations = atoi(optarg); | |
955 | break; | |
956 | case 'w': | |
957 | t.us_wait = atoi(optarg); | |
958 | break; | |
5bee7608 AH |
959 | case 'z': |
960 | t.file_output = 1; | |
bf32654a | 961 | break; |
346bae65 RL |
962 | case 'f': |
963 | t.stop_all = 1; | |
964 | break; | |
6b0658f6 GKH |
965 | default: |
966 | usage(); | |
967 | return -EINVAL; | |
968 | } | |
969 | } | |
970 | ||
971 | if (!strcmp(t.sysfs_prefix, "")) | |
972 | snprintf(t.sysfs_prefix, MAX_SYSFS_PATH, "%s", sysfs_prefix); | |
973 | ||
974 | if (!strcmp(t.debugfs_prefix, "")) | |
975 | snprintf(t.debugfs_prefix, MAX_SYSFS_PATH, "%s", debugfs_prefix); | |
976 | ||
977 | ret = find_loopback_devices(&t); | |
978 | if (ret) | |
979 | return ret; | |
980 | ret = sanity_check(&t); | |
981 | if (ret) | |
982 | return ret; | |
983 | ||
984 | if (t.list_devices) { | |
985 | show_loopback_devices(&t); | |
986 | return 0; | |
987 | } | |
988 | ||
989 | if (t.test_name[0] == '\0' || t.iteration_max == 0) | |
990 | usage(); | |
991 | ||
992 | if (t.async_timeout == 0) | |
993 | t.async_timeout = DEFAULT_ASYNC_TIMEOUT; | |
994 | ||
995 | loopback_run(&t); | |
996 | ||
997 | return 0; | |
998 | } |