]>
Commit | Line | Data |
---|---|---|
309a4c90 SH |
1 | /* |
2 | * q_netem.c NETEM. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
59a935d2 | 9 | * Authors: Stephen Hemminger <shemminger@linux-foundation.org> |
309a4c90 SH |
10 | * |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
3c7950af SH |
15 | #include <math.h> |
16 | #include <ctype.h> | |
309a4c90 | 17 | #include <unistd.h> |
309a4c90 | 18 | #include <fcntl.h> |
e4beb527 | 19 | #include <stdint.h> |
309a4c90 SH |
20 | #include <sys/socket.h> |
21 | #include <netinet/in.h> | |
22 | #include <arpa/inet.h> | |
23 | #include <string.h> | |
b7be3d0c | 24 | #include <errno.h> |
309a4c90 SH |
25 | |
26 | #include "utils.h" | |
27 | #include "tc_util.h" | |
b7be3d0c | 28 | #include "tc_common.h" |
309a4c90 SH |
29 | |
30 | static void explain(void) | |
31 | { | |
ae665a52 | 32 | fprintf(stderr, |
32a121cb | 33 | "Usage: ... netem [ limit PACKETS ]\n" \ |
ea8fc104 SH |
34 | " [ delay TIME [ JITTER [CORRELATION]]]\n" \ |
35 | " [ distribution {uniform|normal|pareto|paretonormal} ]\n" \ | |
32a121cb | 36 | " [ corrupt PERCENT [CORRELATION]]\n" \ |
b7be3d0c | 37 | " [ duplicate PERCENT [CORRELATION]]\n" \ |
3c7950af SH |
38 | " [ loss random PERCENT [CORRELATION]]\n" \ |
39 | " [ loss state P13 [P31 [P32 [P23 P14]]]\n" \ | |
40 | " [ loss gemodel PERCENT [R [1-H [1-K]]]\n" \ | |
1070205d | 41 | " [ ecn ]\n" \ |
6b8dc4de | 42 | " [ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \ |
b6268fbd DT |
43 | " [ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n" \ |
44 | " [ slot MIN_DELAY [MAX_DELAY] [packets MAX_PACKETS]" \ | |
45 | " [bytes MAX_BYTES]]\n" \ | |
588dd51e YS |
46 | " [ slot distribution" \ |
47 | " {uniform|normal|pareto|paretonormal|custom} DELAY JITTER" \ | |
48 | " [packets MAX_PACKETS] [bytes MAX_BYTES]]\n"); | |
309a4c90 SH |
49 | } |
50 | ||
51 | static void explain1(const char *arg) | |
52 | { | |
53 | fprintf(stderr, "Illegal \"%s\"\n", arg); | |
54 | } | |
55 | ||
3c7950af | 56 | /* Upper bound on size of distribution |
c1b81cb5 SH |
57 | * really (TCA_BUF_MAX - other headers) / sizeof (__s16) |
58 | */ | |
59 | #define MAX_DIST (16*1024) | |
60 | ||
3c7950af SH |
61 | /* scaled value used to percent of maximum. */ |
62 | static void set_percent(__u32 *percent, double per) | |
63 | { | |
e4beb527 | 64 | *percent = rint(per * UINT32_MAX); |
3c7950af SH |
65 | } |
66 | ||
3c7950af SH |
67 | static int get_percent(__u32 *percent, const char *str) |
68 | { | |
69 | double per; | |
70 | ||
71 | if (parse_percent(&per, str)) | |
72 | return -1; | |
73 | ||
74 | set_percent(percent, per); | |
75 | return 0; | |
76 | } | |
77 | ||
d1f28cf1 | 78 | static void print_percent(char *buf, int len, __u32 per) |
3c7950af | 79 | { |
e4beb527 | 80 | snprintf(buf, len, "%g%%", (100. * per) / UINT32_MAX); |
3c7950af SH |
81 | } |
82 | ||
32a121cb | 83 | static char *sprint_percent(__u32 per, char *buf) |
3c7950af SH |
84 | { |
85 | print_percent(buf, SPRINT_BSIZE-1, per); | |
86 | return buf; | |
87 | } | |
88 | ||
2e21655e SH |
89 | /* |
90 | * Simplistic file parser for distrbution data. | |
91 | * Format is: | |
92 | * # comment line(s) | |
c1b81cb5 | 93 | * data0 data1 ... |
2e21655e | 94 | */ |
c1b81cb5 | 95 | static int get_distribution(const char *type, __s16 *data, int maxdata) |
b7be3d0c SH |
96 | { |
97 | FILE *f; | |
98 | int n; | |
2e21655e SH |
99 | long x; |
100 | size_t len; | |
fb9b1d0f | 101 | char *line = NULL; |
2e21655e | 102 | char name[128]; |
b7be3d0c | 103 | |
aa27f88c | 104 | snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type); |
2e21655e | 105 | if ((f = fopen(name, "r")) == NULL) { |
ae665a52 | 106 | fprintf(stderr, "No distribution data for %s (%s: %s)\n", |
2e21655e | 107 | type, name, strerror(errno)); |
b7be3d0c SH |
108 | return -1; |
109 | } | |
ae665a52 | 110 | |
b7be3d0c | 111 | n = 0; |
2e21655e SH |
112 | while (getline(&line, &len, f) != -1) { |
113 | char *p, *endp; | |
32a121cb | 114 | |
2e21655e | 115 | if (*line == '\n' || *line == '#') |
b7be3d0c SH |
116 | continue; |
117 | ||
2e21655e SH |
118 | for (p = line; ; p = endp) { |
119 | x = strtol(p, &endp, 0); | |
ae665a52 | 120 | if (endp == p) |
2e21655e SH |
121 | break; |
122 | ||
c1b81cb5 | 123 | if (n >= maxdata) { |
2e21655e SH |
124 | fprintf(stderr, "%s: too much data\n", |
125 | name); | |
126 | n = -1; | |
127 | goto error; | |
128 | } | |
b7be3d0c SH |
129 | data[n++] = x; |
130 | } | |
131 | } | |
2e21655e SH |
132 | error: |
133 | free(line); | |
b7be3d0c | 134 | fclose(f); |
b7be3d0c SH |
135 | return n; |
136 | } | |
137 | ||
3c7950af | 138 | #define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0])) |
e72ca3fb JN |
139 | #define NEXT_IS_SIGNED_NUMBER() \ |
140 | (NEXT_ARG_OK() && (isdigit(argv[1][0]) || argv[1][0] == '-')) | |
b7be3d0c | 141 | |
ae665a52 | 142 | /* Adjust for the fact that psched_ticks aren't always usecs |
b7be3d0c SH |
143 | (based on kernel PSCHED_CLOCK configuration */ |
144 | static int get_ticks(__u32 *ticks, const char *str) | |
145 | { | |
32a121cb | 146 | unsigned int t; |
b7be3d0c | 147 | |
32a121cb | 148 | if (get_time(&t, str)) |
b7be3d0c | 149 | return -1; |
ae665a52 | 150 | |
8f34caaf PM |
151 | if (tc_core_time2big(t)) { |
152 | fprintf(stderr, "Illegal %u time (too large)\n", t); | |
fa565130 SH |
153 | return -1; |
154 | } | |
155 | ||
8f34caaf | 156 | *ticks = tc_core_time2tick(t); |
b7be3d0c SH |
157 | return 0; |
158 | } | |
159 | ||
ae665a52 | 160 | static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv, |
927e3cfb | 161 | struct nlmsghdr *n, const char *dev) |
309a4c90 | 162 | { |
fcbd0165 | 163 | int dist_size = 0; |
588dd51e | 164 | int slot_dist_size = 0; |
2e21655e | 165 | struct rtattr *tail; |
3c7950af | 166 | struct tc_netem_qopt opt = { .limit = 1000 }; |
d17b136f PS |
167 | struct tc_netem_corr cor = {}; |
168 | struct tc_netem_reorder reorder = {}; | |
169 | struct tc_netem_corrupt corrupt = {}; | |
3c7950af SH |
170 | struct tc_netem_gimodel gimodel; |
171 | struct tc_netem_gemodel gemodel; | |
d17b136f | 172 | struct tc_netem_rate rate = {}; |
b6268fbd | 173 | struct tc_netem_slot slot = {}; |
a31a5d59 | 174 | __s16 *dist_data = NULL; |
588dd51e | 175 | __s16 *slot_dist_data = NULL; |
3c7950af | 176 | __u16 loss_type = NETEM_LOSS_UNSPEC; |
d17b136f | 177 | int present[__TCA_NETEM_MAX] = {}; |
dad2f72b | 178 | __u64 rate64 = 0; |
309a4c90 | 179 | |
32a121cb | 180 | for ( ; argc > 0; --argc, ++argv) { |
309a4c90 SH |
181 | if (matches(*argv, "limit") == 0) { |
182 | NEXT_ARG(); | |
2e21655e | 183 | if (get_size(&opt.limit, *argv)) { |
309a4c90 SH |
184 | explain1("limit"); |
185 | return -1; | |
186 | } | |
b7be3d0c SH |
187 | } else if (matches(*argv, "latency") == 0 || |
188 | matches(*argv, "delay") == 0) { | |
309a4c90 | 189 | NEXT_ARG(); |
2e21655e | 190 | if (get_ticks(&opt.latency, *argv)) { |
309a4c90 SH |
191 | explain1("latency"); |
192 | return -1; | |
193 | } | |
b7be3d0c SH |
194 | |
195 | if (NEXT_IS_NUMBER()) { | |
196 | NEXT_ARG(); | |
2e21655e | 197 | if (get_ticks(&opt.jitter, *argv)) { |
b7be3d0c SH |
198 | explain1("latency"); |
199 | return -1; | |
200 | } | |
201 | ||
202 | if (NEXT_IS_NUMBER()) { | |
203 | NEXT_ARG(); | |
40076f62 | 204 | ++present[TCA_NETEM_CORR]; |
3c7950af | 205 | if (get_percent(&cor.delay_corr, *argv)) { |
b7be3d0c SH |
206 | explain1("latency"); |
207 | return -1; | |
208 | } | |
209 | } | |
210 | } | |
211 | } else if (matches(*argv, "loss") == 0 || | |
212 | matches(*argv, "drop") == 0) { | |
3c7950af SH |
213 | if (opt.loss > 0 || loss_type != NETEM_LOSS_UNSPEC) { |
214 | explain1("duplicate loss argument\n"); | |
309a4c90 SH |
215 | return -1; |
216 | } | |
3c7950af SH |
217 | |
218 | NEXT_ARG(); | |
219 | /* Old (deprecated) random loss model syntax */ | |
220 | if (isdigit(argv[0][0])) | |
221 | goto random_loss_model; | |
222 | ||
223 | if (!strcmp(*argv, "random")) { | |
b7be3d0c | 224 | NEXT_ARG(); |
268a9eee | 225 | random_loss_model: |
3c7950af SH |
226 | if (get_percent(&opt.loss, *argv)) { |
227 | explain1("loss percent"); | |
228 | return -1; | |
229 | } | |
230 | if (NEXT_IS_NUMBER()) { | |
231 | NEXT_ARG(); | |
232 | ++present[TCA_NETEM_CORR]; | |
233 | if (get_percent(&cor.loss_corr, *argv)) { | |
234 | explain1("loss correllation"); | |
235 | return -1; | |
236 | } | |
237 | } | |
238 | } else if (!strcmp(*argv, "state")) { | |
239 | double p13; | |
240 | ||
241 | NEXT_ARG(); | |
242 | if (parse_percent(&p13, *argv)) { | |
243 | explain1("loss p13"); | |
244 | return -1; | |
245 | } | |
246 | ||
247 | /* set defaults */ | |
248 | set_percent(&gimodel.p13, p13); | |
249 | set_percent(&gimodel.p31, 1. - p13); | |
250 | set_percent(&gimodel.p32, 0); | |
251 | set_percent(&gimodel.p23, 1.); | |
8f9672af | 252 | set_percent(&gimodel.p14, 0); |
3c7950af SH |
253 | loss_type = NETEM_LOSS_GI; |
254 | ||
255 | if (!NEXT_IS_NUMBER()) | |
256 | continue; | |
257 | NEXT_ARG(); | |
258 | if (get_percent(&gimodel.p31, *argv)) { | |
259 | explain1("loss p31"); | |
260 | return -1; | |
261 | } | |
262 | ||
263 | if (!NEXT_IS_NUMBER()) | |
264 | continue; | |
265 | NEXT_ARG(); | |
266 | if (get_percent(&gimodel.p32, *argv)) { | |
267 | explain1("loss p32"); | |
268 | return -1; | |
269 | } | |
270 | ||
271 | if (!NEXT_IS_NUMBER()) | |
272 | continue; | |
273 | NEXT_ARG(); | |
274 | if (get_percent(&gimodel.p23, *argv)) { | |
275 | explain1("loss p23"); | |
276 | return -1; | |
277 | } | |
8f9672af JV |
278 | if (!NEXT_IS_NUMBER()) |
279 | continue; | |
280 | NEXT_ARG(); | |
281 | if (get_percent(&gimodel.p14, *argv)) { | |
282 | explain1("loss p14"); | |
283 | return -1; | |
284 | } | |
3c7950af SH |
285 | |
286 | } else if (!strcmp(*argv, "gemodel")) { | |
287 | NEXT_ARG(); | |
288 | if (get_percent(&gemodel.p, *argv)) { | |
289 | explain1("loss gemodel p"); | |
290 | return -1; | |
291 | } | |
292 | ||
293 | /* set defaults */ | |
294 | set_percent(&gemodel.r, 1.); | |
295 | set_percent(&gemodel.h, 0); | |
3757185b | 296 | set_percent(&gemodel.k1, 0); |
3c7950af SH |
297 | loss_type = NETEM_LOSS_GE; |
298 | ||
299 | if (!NEXT_IS_NUMBER()) | |
300 | continue; | |
301 | NEXT_ARG(); | |
302 | if (get_percent(&gemodel.r, *argv)) { | |
303 | explain1("loss gemodel r"); | |
304 | return -1; | |
305 | } | |
306 | ||
307 | if (!NEXT_IS_NUMBER()) | |
308 | continue; | |
309 | NEXT_ARG(); | |
310 | if (get_percent(&gemodel.h, *argv)) { | |
311 | explain1("loss gemodel h"); | |
312 | return -1; | |
313 | } | |
3757185b JV |
314 | /* netem option is "1-h" but kernel |
315 | * expects "h". | |
316 | */ | |
e4beb527 | 317 | gemodel.h = UINT32_MAX - gemodel.h; |
3c7950af SH |
318 | |
319 | if (!NEXT_IS_NUMBER()) | |
320 | continue; | |
321 | NEXT_ARG(); | |
322 | if (get_percent(&gemodel.k1, *argv)) { | |
323 | explain1("loss gemodel k"); | |
b7be3d0c SH |
324 | return -1; |
325 | } | |
3c7950af SH |
326 | } else { |
327 | fprintf(stderr, "Unknown loss parameter: %s\n", | |
328 | *argv); | |
329 | return -1; | |
b7be3d0c | 330 | } |
1070205d | 331 | } else if (matches(*argv, "ecn") == 0) { |
268a9eee | 332 | present[TCA_NETEM_ECN] = 1; |
ea8fc104 SH |
333 | } else if (matches(*argv, "reorder") == 0) { |
334 | NEXT_ARG(); | |
40076f62 | 335 | present[TCA_NETEM_REORDER] = 1; |
ea8fc104 SH |
336 | if (get_percent(&reorder.probability, *argv)) { |
337 | explain1("reorder"); | |
338 | return -1; | |
339 | } | |
340 | if (NEXT_IS_NUMBER()) { | |
341 | NEXT_ARG(); | |
40076f62 | 342 | ++present[TCA_NETEM_CORR]; |
ea8fc104 SH |
343 | if (get_percent(&reorder.correlation, *argv)) { |
344 | explain1("reorder"); | |
345 | return -1; | |
346 | } | |
347 | } | |
a31a5d59 SH |
348 | } else if (matches(*argv, "corrupt") == 0) { |
349 | NEXT_ARG(); | |
40076f62 | 350 | present[TCA_NETEM_CORRUPT] = 1; |
a31a5d59 SH |
351 | if (get_percent(&corrupt.probability, *argv)) { |
352 | explain1("corrupt"); | |
353 | return -1; | |
354 | } | |
355 | if (NEXT_IS_NUMBER()) { | |
356 | NEXT_ARG(); | |
40076f62 | 357 | ++present[TCA_NETEM_CORR]; |
a31a5d59 SH |
358 | if (get_percent(&corrupt.correlation, *argv)) { |
359 | explain1("corrupt"); | |
360 | return -1; | |
361 | } | |
362 | } | |
309a4c90 | 363 | } else if (matches(*argv, "gap") == 0) { |
309a4c90 | 364 | NEXT_ARG(); |
2e21655e | 365 | if (get_u32(&opt.gap, *argv, 0)) { |
309a4c90 SH |
366 | explain1("gap"); |
367 | return -1; | |
368 | } | |
ffb79d06 | 369 | } else if (matches(*argv, "duplicate") == 0) { |
309a4c90 | 370 | NEXT_ARG(); |
2e21655e | 371 | if (get_percent(&opt.duplicate, *argv)) { |
ffb79d06 | 372 | explain1("duplicate"); |
309a4c90 SH |
373 | return -1; |
374 | } | |
b7be3d0c SH |
375 | if (NEXT_IS_NUMBER()) { |
376 | NEXT_ARG(); | |
2e21655e | 377 | if (get_percent(&cor.dup_corr, *argv)) { |
b7be3d0c SH |
378 | explain1("duplicate"); |
379 | return -1; | |
380 | } | |
381 | } | |
382 | } else if (matches(*argv, "distribution") == 0) { | |
309a4c90 | 383 | NEXT_ARG(); |
c1b81cb5 SH |
384 | dist_data = calloc(sizeof(dist_data[0]), MAX_DIST); |
385 | dist_size = get_distribution(*argv, dist_data, MAX_DIST); | |
386 | if (dist_size <= 0) { | |
387 | free(dist_data); | |
309a4c90 | 388 | return -1; |
c1b81cb5 | 389 | } |
6b8dc4de HPP |
390 | } else if (matches(*argv, "rate") == 0) { |
391 | ++present[TCA_NETEM_RATE]; | |
392 | NEXT_ARG(); | |
927e3cfb ND |
393 | if (strchr(*argv, '%')) { |
394 | if (get_percent_rate64(&rate64, *argv, dev)) { | |
395 | explain1("rate"); | |
396 | return -1; | |
397 | } | |
398 | } else if (get_rate64(&rate64, *argv)) { | |
6b8dc4de HPP |
399 | explain1("rate"); |
400 | return -1; | |
401 | } | |
e72ca3fb | 402 | if (NEXT_IS_SIGNED_NUMBER()) { |
6b8dc4de HPP |
403 | NEXT_ARG(); |
404 | if (get_s32(&rate.packet_overhead, *argv, 0)) { | |
405 | explain1("rate"); | |
406 | return -1; | |
407 | } | |
408 | } | |
409 | if (NEXT_IS_NUMBER()) { | |
410 | NEXT_ARG(); | |
411 | if (get_u32(&rate.cell_size, *argv, 0)) { | |
412 | explain1("rate"); | |
413 | return -1; | |
414 | } | |
415 | } | |
e72ca3fb | 416 | if (NEXT_IS_SIGNED_NUMBER()) { |
6b8dc4de HPP |
417 | NEXT_ARG(); |
418 | if (get_s32(&rate.cell_overhead, *argv, 0)) { | |
419 | explain1("rate"); | |
420 | return -1; | |
421 | } | |
422 | } | |
b6268fbd | 423 | } else if (matches(*argv, "slot") == 0) { |
b6268fbd DT |
424 | if (NEXT_IS_NUMBER()) { |
425 | NEXT_ARG(); | |
588dd51e YS |
426 | present[TCA_NETEM_SLOT] = 1; |
427 | if (get_time64(&slot.min_delay, *argv)) { | |
428 | explain1("slot min_delay"); | |
b6268fbd DT |
429 | return -1; |
430 | } | |
588dd51e YS |
431 | if (NEXT_IS_NUMBER()) { |
432 | NEXT_ARG(); | |
433 | if (get_time64(&slot.max_delay, *argv) || | |
434 | slot.max_delay < slot.min_delay) { | |
435 | explain1("slot max_delay"); | |
436 | return -1; | |
437 | } | |
438 | } else { | |
439 | slot.max_delay = slot.min_delay; | |
440 | } | |
b6268fbd | 441 | } else { |
588dd51e YS |
442 | NEXT_ARG(); |
443 | if (strcmp(*argv, "distribution") == 0) { | |
444 | present[TCA_NETEM_SLOT] = 1; | |
445 | NEXT_ARG(); | |
446 | slot_dist_data = calloc(sizeof(slot_dist_data[0]), MAX_DIST); | |
447 | if (!slot_dist_data) | |
448 | return -1; | |
449 | slot_dist_size = get_distribution(*argv, slot_dist_data, MAX_DIST); | |
450 | if (slot_dist_size <= 0) { | |
451 | free(slot_dist_data); | |
452 | return -1; | |
453 | } | |
454 | NEXT_ARG(); | |
455 | if (get_time64(&slot.dist_delay, *argv)) { | |
456 | explain1("slot delay"); | |
457 | return -1; | |
458 | } | |
459 | NEXT_ARG(); | |
460 | if (get_time64(&slot.dist_jitter, *argv)) { | |
461 | explain1("slot jitter"); | |
462 | return -1; | |
463 | } | |
464 | if (slot.dist_jitter <= 0) { | |
465 | fprintf(stderr, "Non-positive jitter\n"); | |
466 | return -1; | |
467 | } | |
468 | } else { | |
469 | fprintf(stderr, "Unknown slot parameter: %s\n", | |
470 | *argv); | |
471 | return -1; | |
472 | } | |
b6268fbd DT |
473 | } |
474 | if (NEXT_ARG_OK() && | |
475 | matches(*(argv+1), "packets") == 0) { | |
476 | NEXT_ARG(); | |
477 | if (!NEXT_ARG_OK() || | |
478 | get_s32(&slot.max_packets, *(argv+1), 0)) { | |
479 | explain1("slot packets"); | |
480 | return -1; | |
481 | } | |
482 | NEXT_ARG(); | |
483 | } | |
484 | if (NEXT_ARG_OK() && | |
485 | matches(*(argv+1), "bytes") == 0) { | |
486 | unsigned int max_bytes; | |
487 | NEXT_ARG(); | |
488 | if (!NEXT_ARG_OK() || | |
489 | get_size(&max_bytes, *(argv+1))) { | |
490 | explain1("slot bytes"); | |
491 | return -1; | |
492 | } | |
493 | slot.max_bytes = (int) max_bytes; | |
494 | NEXT_ARG(); | |
495 | } | |
309a4c90 SH |
496 | } else if (strcmp(*argv, "help") == 0) { |
497 | explain(); | |
498 | return -1; | |
499 | } else { | |
500 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
501 | explain(); | |
502 | return -1; | |
503 | } | |
309a4c90 SH |
504 | } |
505 | ||
b625e361 JSP |
506 | tail = NLMSG_TAIL(n); |
507 | ||
ea8fc104 SH |
508 | if (reorder.probability) { |
509 | if (opt.latency == 0) { | |
510 | fprintf(stderr, "reordering not possible without specifying some delay\n"); | |
14a1c164 VS |
511 | explain(); |
512 | return -1; | |
ea8fc104 SH |
513 | } |
514 | if (opt.gap == 0) | |
515 | opt.gap = 1; | |
516 | } else if (opt.gap > 0) { | |
517 | fprintf(stderr, "gap specified without reorder probability\n"); | |
518 | explain(); | |
519 | return -1; | |
520 | } | |
521 | ||
1070205d VS |
522 | if (present[TCA_NETEM_ECN]) { |
523 | if (opt.loss <= 0 && loss_type == NETEM_LOSS_UNSPEC) { | |
524 | fprintf(stderr, "ecn requested without loss model\n"); | |
525 | explain(); | |
526 | return -1; | |
527 | } | |
528 | } | |
529 | ||
a31a5d59 | 530 | if (dist_data && (opt.latency == 0 || opt.jitter == 0)) { |
ea8fc104 SH |
531 | fprintf(stderr, "distribution specified but no latency and jitter values\n"); |
532 | explain(); | |
533 | return -1; | |
534 | } | |
535 | ||
b625e361 JSP |
536 | if (addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) < 0) |
537 | return -1; | |
2e21655e | 538 | |
40076f62 | 539 | if (present[TCA_NETEM_CORR] && |
c1b81cb5 | 540 | addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0) |
268a9eee | 541 | return -1; |
a31a5d59 | 542 | |
3c7950af | 543 | if (present[TCA_NETEM_REORDER] && |
c1b81cb5 | 544 | addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0) |
e9bc3c40 | 545 | return -1; |
a31a5d59 | 546 | |
1070205d VS |
547 | if (present[TCA_NETEM_ECN] && |
548 | addattr_l(n, 1024, TCA_NETEM_ECN, &present[TCA_NETEM_ECN], | |
549 | sizeof(present[TCA_NETEM_ECN])) < 0) | |
268a9eee | 550 | return -1; |
1070205d | 551 | |
40076f62 | 552 | if (present[TCA_NETEM_CORRUPT] && |
c1b81cb5 | 553 | addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0) |
40076f62 | 554 | return -1; |
a31a5d59 | 555 | |
b6268fbd DT |
556 | if (present[TCA_NETEM_SLOT] && |
557 | addattr_l(n, 1024, TCA_NETEM_SLOT, &slot, sizeof(slot)) < 0) | |
558 | return -1; | |
559 | ||
3c7950af SH |
560 | if (loss_type != NETEM_LOSS_UNSPEC) { |
561 | struct rtattr *start; | |
562 | ||
563 | start = addattr_nest(n, 1024, TCA_NETEM_LOSS | NLA_F_NESTED); | |
564 | if (loss_type == NETEM_LOSS_GI) { | |
565 | if (addattr_l(n, 1024, NETEM_LOSS_GI, | |
566 | &gimodel, sizeof(gimodel)) < 0) | |
268a9eee | 567 | return -1; |
3c7950af SH |
568 | } else if (loss_type == NETEM_LOSS_GE) { |
569 | if (addattr_l(n, 1024, NETEM_LOSS_GE, | |
570 | &gemodel, sizeof(gemodel)) < 0) | |
268a9eee | 571 | return -1; |
3c7950af SH |
572 | } else { |
573 | fprintf(stderr, "loss in the weeds!\n"); | |
574 | return -1; | |
575 | } | |
3d0b7439 | 576 | |
3c7950af SH |
577 | addattr_nest_end(n, start); |
578 | } | |
579 | ||
dad2f72b YY |
580 | if (present[TCA_NETEM_RATE]) { |
581 | if (rate64 >= (1ULL << 32)) { | |
582 | if (addattr_l(n, 1024, | |
583 | TCA_NETEM_RATE64, &rate64, sizeof(rate64)) < 0) | |
584 | return -1; | |
585 | rate.rate = ~0U; | |
586 | } else { | |
587 | rate.rate = rate64; | |
588 | } | |
589 | if (addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0) | |
590 | return -1; | |
591 | } | |
6b8dc4de | 592 | |
a31a5d59 | 593 | if (dist_data) { |
c1b81cb5 SH |
594 | if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]), |
595 | TCA_NETEM_DELAY_DIST, | |
596 | dist_data, dist_size * sizeof(dist_data[0])) < 0) | |
a31a5d59 | 597 | return -1; |
c1b81cb5 | 598 | free(dist_data); |
2e21655e | 599 | } |
588dd51e YS |
600 | |
601 | if (slot_dist_data) { | |
602 | if (addattr_l(n, MAX_DIST * sizeof(slot_dist_data[0]), | |
603 | TCA_NETEM_SLOT_DIST, | |
604 | slot_dist_data, slot_dist_size * sizeof(slot_dist_data[0])) < 0) | |
605 | return -1; | |
606 | free(slot_dist_data); | |
607 | } | |
b625e361 | 608 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
b7be3d0c | 609 | return 0; |
309a4c90 SH |
610 | } |
611 | ||
612 | static int netem_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
613 | { | |
2e21655e | 614 | const struct tc_netem_corr *cor = NULL; |
ea8fc104 | 615 | const struct tc_netem_reorder *reorder = NULL; |
a31a5d59 | 616 | const struct tc_netem_corrupt *corrupt = NULL; |
3c7950af SH |
617 | const struct tc_netem_gimodel *gimodel = NULL; |
618 | const struct tc_netem_gemodel *gemodel = NULL; | |
1070205d | 619 | int *ecn = NULL; |
2e21655e | 620 | struct tc_netem_qopt qopt; |
6b8dc4de | 621 | const struct tc_netem_rate *rate = NULL; |
b6268fbd | 622 | const struct tc_netem_slot *slot = NULL; |
a754de3c | 623 | int len; |
dad2f72b | 624 | __u64 rate64 = 0; |
32a121cb | 625 | |
309a4c90 | 626 | SPRINT_BUF(b1); |
309a4c90 SH |
627 | |
628 | if (opt == NULL) | |
629 | return 0; | |
630 | ||
a754de3c | 631 | len = RTA_PAYLOAD(opt) - sizeof(qopt); |
2e21655e SH |
632 | if (len < 0) { |
633 | fprintf(stderr, "options size error\n"); | |
309a4c90 | 634 | return -1; |
b7be3d0c | 635 | } |
2e21655e SH |
636 | memcpy(&qopt, RTA_DATA(opt), sizeof(qopt)); |
637 | ||
638 | if (len > 0) { | |
1d2d1cb5 | 639 | struct rtattr *tb[TCA_NETEM_MAX+1]; |
32a121cb | 640 | |
2e21655e SH |
641 | parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt), |
642 | len); | |
ae665a52 | 643 | |
2e21655e SH |
644 | if (tb[TCA_NETEM_CORR]) { |
645 | if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor)) | |
646 | return -1; | |
647 | cor = RTA_DATA(tb[TCA_NETEM_CORR]); | |
648 | } | |
ea8fc104 SH |
649 | if (tb[TCA_NETEM_REORDER]) { |
650 | if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder)) | |
651 | return -1; | |
652 | reorder = RTA_DATA(tb[TCA_NETEM_REORDER]); | |
653 | } | |
a31a5d59 SH |
654 | if (tb[TCA_NETEM_CORRUPT]) { |
655 | if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt)) | |
656 | return -1; | |
e9bc3c40 | 657 | corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]); |
a31a5d59 | 658 | } |
3c7950af SH |
659 | if (tb[TCA_NETEM_LOSS]) { |
660 | struct rtattr *lb[NETEM_LOSS_MAX + 1]; | |
661 | ||
662 | parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]); | |
663 | if (lb[NETEM_LOSS_GI]) | |
8f9672af | 664 | gimodel = RTA_DATA(lb[NETEM_LOSS_GI]); |
3c7950af SH |
665 | if (lb[NETEM_LOSS_GE]) |
666 | gemodel = RTA_DATA(lb[NETEM_LOSS_GE]); | |
3d0b7439 | 667 | } |
6b8dc4de HPP |
668 | if (tb[TCA_NETEM_RATE]) { |
669 | if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate)) | |
670 | return -1; | |
671 | rate = RTA_DATA(tb[TCA_NETEM_RATE]); | |
672 | } | |
1070205d VS |
673 | if (tb[TCA_NETEM_ECN]) { |
674 | if (RTA_PAYLOAD(tb[TCA_NETEM_ECN]) < sizeof(*ecn)) | |
675 | return -1; | |
676 | ecn = RTA_DATA(tb[TCA_NETEM_ECN]); | |
677 | } | |
dad2f72b YY |
678 | if (tb[TCA_NETEM_RATE64]) { |
679 | if (RTA_PAYLOAD(tb[TCA_NETEM_RATE64]) < sizeof(rate64)) | |
680 | return -1; | |
681 | rate64 = rta_getattr_u64(tb[TCA_NETEM_RATE64]); | |
682 | } | |
b6268fbd DT |
683 | if (tb[TCA_NETEM_SLOT]) { |
684 | if (RTA_PAYLOAD(tb[TCA_NETEM_SLOT]) < sizeof(*slot)) | |
685 | return -1; | |
686 | slot = RTA_DATA(tb[TCA_NETEM_SLOT]); | |
687 | } | |
2e21655e | 688 | } |
309a4c90 | 689 | |
2e21655e | 690 | fprintf(f, "limit %d", qopt.limit); |
31fa60e0 | 691 | |
2e21655e SH |
692 | if (qopt.latency) { |
693 | fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1)); | |
b7be3d0c | 694 | |
2e21655e SH |
695 | if (qopt.jitter) { |
696 | fprintf(f, " %s", sprint_ticks(qopt.jitter, b1)); | |
697 | if (cor && cor->delay_corr) | |
698 | fprintf(f, " %s", sprint_percent(cor->delay_corr, b1)); | |
b7be3d0c SH |
699 | } |
700 | } | |
701 | ||
2e21655e SH |
702 | if (qopt.loss) { |
703 | fprintf(f, " loss %s", sprint_percent(qopt.loss, b1)); | |
704 | if (cor && cor->loss_corr) | |
705 | fprintf(f, " %s", sprint_percent(cor->loss_corr, b1)); | |
b7be3d0c SH |
706 | } |
707 | ||
3c7950af SH |
708 | if (gimodel) { |
709 | fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1)); | |
710 | fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1)); | |
711 | fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1)); | |
712 | fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1)); | |
713 | fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1)); | |
714 | } | |
715 | ||
716 | if (gemodel) { | |
3757185b | 717 | fprintf(f, " loss gemodel p %s", |
3c7950af SH |
718 | sprint_percent(gemodel->p, b1)); |
719 | fprintf(f, " r %s", sprint_percent(gemodel->r, b1)); | |
e4beb527 | 720 | fprintf(f, " 1-h %s", sprint_percent(UINT32_MAX - |
3757185b | 721 | gemodel->h, b1)); |
3c7950af SH |
722 | fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1)); |
723 | } | |
724 | ||
2e21655e | 725 | if (qopt.duplicate) { |
b7be3d0c | 726 | fprintf(f, " duplicate %s", |
2e21655e SH |
727 | sprint_percent(qopt.duplicate, b1)); |
728 | if (cor && cor->dup_corr) | |
729 | fprintf(f, " %s", sprint_percent(cor->dup_corr, b1)); | |
b7be3d0c | 730 | } |
ae665a52 | 731 | |
ea8fc104 | 732 | if (reorder && reorder->probability) { |
ae665a52 | 733 | fprintf(f, " reorder %s", |
ea8fc104 SH |
734 | sprint_percent(reorder->probability, b1)); |
735 | if (reorder->correlation) | |
ae665a52 | 736 | fprintf(f, " %s", |
ea8fc104 SH |
737 | sprint_percent(reorder->correlation, b1)); |
738 | } | |
b7be3d0c | 739 | |
a31a5d59 | 740 | if (corrupt && corrupt->probability) { |
ae665a52 | 741 | fprintf(f, " corrupt %s", |
a31a5d59 SH |
742 | sprint_percent(corrupt->probability, b1)); |
743 | if (corrupt->correlation) | |
ae665a52 | 744 | fprintf(f, " %s", |
a31a5d59 SH |
745 | sprint_percent(corrupt->correlation, b1)); |
746 | } | |
747 | ||
6b8dc4de | 748 | if (rate && rate->rate) { |
dad2f72b YY |
749 | if (rate64) |
750 | fprintf(f, " rate %s", sprint_rate(rate64, b1)); | |
751 | else | |
752 | fprintf(f, " rate %s", sprint_rate(rate->rate, b1)); | |
6b8dc4de HPP |
753 | if (rate->packet_overhead) |
754 | fprintf(f, " packetoverhead %d", rate->packet_overhead); | |
755 | if (rate->cell_size) | |
756 | fprintf(f, " cellsize %u", rate->cell_size); | |
757 | if (rate->cell_overhead) | |
758 | fprintf(f, " celloverhead %d", rate->cell_overhead); | |
759 | } | |
760 | ||
b6268fbd | 761 | if (slot) { |
588dd51e YS |
762 | if (slot->dist_jitter > 0) { |
763 | fprintf(f, " slot distribution %s", sprint_time64(slot->dist_delay, b1)); | |
764 | fprintf(f, " %s", sprint_time64(slot->dist_jitter, b1)); | |
765 | } else { | |
766 | fprintf(f, " slot %s", sprint_time64(slot->min_delay, b1)); | |
767 | fprintf(f, " %s", sprint_time64(slot->max_delay, b1)); | |
768 | } | |
b6268fbd DT |
769 | if (slot->max_packets) |
770 | fprintf(f, " packets %d", slot->max_packets); | |
771 | if (slot->max_bytes) | |
772 | fprintf(f, " bytes %d", slot->max_bytes); | |
773 | } | |
774 | ||
1070205d VS |
775 | if (ecn) |
776 | fprintf(f, " ecn "); | |
777 | ||
2e21655e SH |
778 | if (qopt.gap) |
779 | fprintf(f, " gap %lu", (unsigned long)qopt.gap); | |
309a4c90 | 780 | |
1070205d | 781 | |
309a4c90 SH |
782 | return 0; |
783 | } | |
784 | ||
95812b56 | 785 | struct qdisc_util netem_qdisc_util = { |
32a121cb | 786 | .id = "netem", |
31fa60e0 SH |
787 | .parse_qopt = netem_parse_opt, |
788 | .print_qopt = netem_print_opt, | |
309a4c90 | 789 | }; |