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8073dd31 NM |
1 | /* |
2 | * Copyright (c) 2011, 2012 Nicira, Inc. | |
3 | * Copyright (c) 2013 InMon Corp. | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | #include <config.h> | |
19 | ||
20 | #include <errno.h> | |
21 | #include <getopt.h> | |
22 | #include <signal.h> | |
23 | #include <stdlib.h> | |
24 | #include <unistd.h> | |
25 | #include <setjmp.h> | |
26 | ||
27 | #include "command-line.h" | |
28 | #include "daemon.h" | |
29 | #include "dynamic-string.h" | |
30 | #include "netflow.h" | |
31 | #include "ofpbuf.h" | |
32 | #include "packets.h" | |
33 | #include "poll-loop.h" | |
34 | #include "socket-util.h" | |
35 | #include "unixctl.h" | |
36 | #include "util.h" | |
37 | #include "vlog.h" | |
38 | ||
39 | static void usage(void) NO_RETURN; | |
40 | static void parse_options(int argc, char *argv[]); | |
41 | ||
42 | static unixctl_cb_func test_sflow_exit; | |
43 | ||
44 | /* Datagram. */ | |
45 | #define SFLOW_VERSION_5 5 | |
46 | #define SFLOW_MIN_LEN 36 | |
47 | #define SFLOW_MAX_AGENTIP_STRLEN 64 | |
48 | ||
49 | /* Sample tag numbers. */ | |
50 | #define SFLOW_FLOW_SAMPLE 1 | |
51 | #define SFLOW_COUNTERS_SAMPLE 2 | |
52 | #define SFLOW_FLOW_SAMPLE_EXPANDED 3 | |
53 | #define SFLOW_COUNTERS_SAMPLE_EXPANDED 4 | |
54 | ||
55 | /* Structure element tag numbers. */ | |
56 | #define SFLOW_TAG_CTR_IFCOUNTERS 1 | |
57 | #define SFLOW_TAG_PKT_HEADER 1 | |
58 | #define SFLOW_TAG_PKT_SWITCH 1001 | |
59 | ||
60 | struct sflow_addr { | |
61 | enum { | |
62 | SFLOW_ADDRTYPE_undefined = 0, | |
63 | SFLOW_ADDRTYPE_IP4, | |
64 | SFLOW_ADDRTYPE_IP6 | |
65 | } type; | |
66 | ||
67 | union { | |
68 | ovs_be32 ip4; | |
69 | ovs_be32 ip6[4]; | |
70 | } a; | |
71 | }; | |
72 | ||
73 | struct sflow_xdr { | |
74 | /* Exceptions. */ | |
75 | jmp_buf env; | |
76 | int errline; | |
77 | ||
78 | /* Cursor. */ | |
79 | ovs_be32 *datap; | |
80 | uint32_t i; | |
81 | uint32_t quads; | |
82 | ||
83 | /* Agent. */ | |
84 | struct sflow_addr agentAddr; | |
85 | char agentIPStr[SFLOW_MAX_AGENTIP_STRLEN]; | |
86 | uint32_t subAgentId; | |
87 | uint32_t uptime_mS; | |
88 | ||
89 | /* Datasource. */ | |
90 | uint32_t dsClass; | |
91 | uint32_t dsIndex; | |
92 | ||
93 | /* Sequence numbers. */ | |
94 | uint32_t dgramSeqNo; | |
95 | uint32_t fsSeqNo; | |
96 | uint32_t csSeqNo; | |
97 | ||
98 | /* Structure offsets. */ | |
99 | struct { | |
100 | uint32_t HEADER; | |
101 | uint32_t SWITCH; | |
102 | uint32_t IFCOUNTERS; | |
103 | } offset; | |
104 | ||
105 | /* Flow sample fields. */ | |
106 | uint32_t meanSkipCount; | |
107 | uint32_t samplePool; | |
108 | uint32_t dropEvents; | |
109 | uint32_t inputPortFormat; | |
110 | uint32_t inputPort; | |
111 | uint32_t outputPortFormat; | |
112 | uint32_t outputPort; | |
113 | }; | |
114 | ||
115 | #define SFLOWXDR_try(x) ((x->errline = setjmp(x->env)) == 0) | |
116 | #define SFLOWXDR_throw(x) longjmp(x->env, __LINE__) | |
117 | #define SFLOWXDR_assert(x, t) if (!(t)) SFLOWXDR_throw(x) | |
118 | ||
119 | static void | |
120 | sflowxdr_init(struct sflow_xdr *x, void *buf, size_t len) | |
121 | { | |
122 | x->datap = buf; | |
123 | x->quads = len >> 2; | |
124 | } | |
125 | ||
126 | static uint32_t | |
127 | sflowxdr_next(struct sflow_xdr *x) | |
128 | { | |
129 | return ntohl(x->datap[x->i++]); | |
130 | } | |
131 | ||
132 | static ovs_be32 | |
133 | sflowxdr_next_n(struct sflow_xdr *x) | |
134 | { | |
135 | return x->datap[x->i++]; | |
136 | } | |
137 | ||
138 | static bool | |
139 | sflowxdr_more(const struct sflow_xdr *x, uint32_t q) | |
140 | { | |
141 | return q + x->i <= x->quads; | |
142 | } | |
143 | ||
144 | static void | |
145 | sflowxdr_skip(struct sflow_xdr *x, uint32_t q) | |
146 | { | |
147 | x->i += q; | |
148 | } | |
149 | ||
150 | static uint32_t | |
151 | sflowxdr_mark(const struct sflow_xdr *x, uint32_t q) | |
152 | { | |
153 | return x->i + q; | |
154 | } | |
155 | ||
156 | static bool | |
157 | sflowxdr_mark_ok(const struct sflow_xdr *x, uint32_t m) | |
158 | { | |
159 | return m == x->i; | |
160 | } | |
161 | ||
162 | static void | |
163 | sflowxdr_mark_unique(struct sflow_xdr *x, uint32_t *pi) | |
164 | { | |
165 | if (*pi) { | |
166 | SFLOWXDR_throw(x); | |
167 | } | |
168 | *pi = x->i; | |
169 | } | |
170 | ||
171 | static void | |
172 | sflowxdr_setc(struct sflow_xdr *x, uint32_t j) | |
173 | { | |
174 | x->i = j; | |
175 | } | |
176 | ||
177 | static const char * | |
178 | sflowxdr_str(const struct sflow_xdr *x) | |
179 | { | |
180 | return (const char *) (x->datap + x->i); | |
181 | } | |
182 | ||
183 | static uint64_t | |
184 | sflowxdr_next_int64(struct sflow_xdr *x) | |
185 | { | |
186 | uint64_t scratch; | |
187 | scratch = sflowxdr_next(x); | |
188 | scratch <<= 32; | |
189 | scratch += sflowxdr_next(x); | |
190 | return scratch; | |
191 | } | |
192 | ||
193 | static void | |
194 | process_counter_sample(struct sflow_xdr *x) | |
195 | { | |
196 | if (x->offset.IFCOUNTERS) { | |
197 | sflowxdr_setc(x, x->offset.IFCOUNTERS); | |
198 | printf("IFCOUNTERS"); | |
199 | printf(" dgramSeqNo=%"PRIu32, x->dgramSeqNo); | |
200 | printf(" ds=%s>%"PRIu32":%"PRIu32, | |
201 | x->agentIPStr, x->dsClass, x->dsIndex); | |
202 | printf(" csSeqNo=%"PRIu32, x->csSeqNo); | |
203 | printf(" ifindex=%"PRIu32, sflowxdr_next(x)); | |
204 | printf(" type=%"PRIu32, sflowxdr_next(x)); | |
205 | printf(" ifspeed=%"PRIu64, sflowxdr_next_int64(x)); | |
206 | printf(" direction=%"PRIu32, sflowxdr_next(x)); | |
207 | printf(" status=%"PRIu32, sflowxdr_next(x)); | |
208 | printf(" in_octets=%"PRIu64, sflowxdr_next_int64(x)); | |
209 | printf(" in_unicasts=%"PRIu32, sflowxdr_next(x)); | |
210 | printf(" in_multicasts=%"PRIu32, sflowxdr_next(x)); | |
211 | printf(" in_broadcasts=%"PRIu32, sflowxdr_next(x)); | |
212 | printf(" in_discards=%"PRIu32, sflowxdr_next(x)); | |
213 | printf(" in_errors=%"PRIu32, sflowxdr_next(x)); | |
214 | printf(" in_unknownprotos=%"PRIu32, sflowxdr_next(x)); | |
215 | printf(" out_octets=%"PRIu64, sflowxdr_next_int64(x)); | |
216 | printf(" out_unicasts=%"PRIu32, sflowxdr_next(x)); | |
217 | printf(" out_multicasts=%"PRIu32, sflowxdr_next(x)); | |
218 | printf(" out_broadcasts=%"PRIu32, sflowxdr_next(x)); | |
219 | printf(" out_discards=%"PRIu32, sflowxdr_next(x)); | |
220 | printf(" out_errors=%"PRIu32, sflowxdr_next(x)); | |
221 | printf(" promiscuous=%"PRIu32, sflowxdr_next(x)); | |
222 | printf("\n"); | |
223 | } | |
224 | } | |
225 | ||
226 | static char | |
227 | bin_to_hex(int hexit) | |
228 | { | |
229 | return "0123456789ABCDEF"[hexit]; | |
230 | } | |
231 | ||
232 | static int | |
233 | print_hex(const char *a, int len, char *buf, int bufLen) | |
234 | { | |
235 | unsigned char nextByte; | |
236 | int b = 0; | |
237 | int i; | |
238 | ||
239 | for (i = 0; i < len; i++) { | |
240 | if (b > bufLen - 10) { | |
241 | break; | |
242 | } | |
243 | nextByte = a[i]; | |
244 | buf[b++] = bin_to_hex(nextByte >> 4); | |
245 | buf[b++] = bin_to_hex(nextByte & 0x0f); | |
246 | if (i < len - 1) { | |
247 | buf[b++] = '-'; | |
248 | } | |
249 | } | |
250 | buf[b] = '\0'; | |
251 | return b; | |
252 | } | |
253 | ||
254 | #define SFLOW_HEX_SCRATCH 1024 | |
255 | ||
256 | static void | |
257 | process_flow_sample(struct sflow_xdr *x) | |
258 | { | |
259 | if (x->offset.HEADER) { | |
260 | uint32_t headerLen; | |
261 | char scratch[SFLOW_HEX_SCRATCH]; | |
262 | ||
263 | printf("HEADER"); | |
264 | printf(" dgramSeqNo=%"PRIu32, x->dgramSeqNo); | |
265 | printf(" ds=%s>%"PRIu32":%"PRIu32, | |
266 | x->agentIPStr, x->dsClass, x->dsIndex); | |
267 | printf(" fsSeqNo=%"PRIu32, x->fsSeqNo); | |
268 | ||
269 | if (x->offset.SWITCH) { | |
270 | sflowxdr_setc(x, x->offset.SWITCH); | |
271 | printf(" in_vlan=%"PRIu32, sflowxdr_next(x)); | |
272 | printf(" in_priority=%"PRIu32, sflowxdr_next(x)); | |
273 | printf(" out_vlan=%"PRIu32, sflowxdr_next(x)); | |
274 | printf(" out_priority=%"PRIu32, sflowxdr_next(x)); | |
275 | } | |
276 | ||
277 | sflowxdr_setc(x, x->offset.HEADER); | |
278 | printf(" meanSkip=%"PRIu32, x->meanSkipCount); | |
279 | printf(" samplePool=%"PRIu32, x->samplePool); | |
280 | printf(" dropEvents=%"PRIu32, x->dropEvents); | |
281 | printf(" in_ifindex=%"PRIu32, x->inputPort); | |
282 | printf(" in_format=%"PRIu32, x->inputPortFormat); | |
283 | printf(" out_ifindex=%"PRIu32, x->outputPort); | |
284 | printf(" out_format=%"PRIu32, x->outputPortFormat); | |
285 | printf(" hdr_prot=%"PRIu32, sflowxdr_next(x)); | |
286 | printf(" pkt_len=%"PRIu32, sflowxdr_next(x)); | |
287 | printf(" stripped=%"PRIu32, sflowxdr_next(x)); | |
288 | headerLen = sflowxdr_next(x); | |
289 | printf(" hdr_len=%"PRIu32, headerLen); | |
290 | print_hex(sflowxdr_str(x), headerLen, scratch, SFLOW_HEX_SCRATCH); | |
291 | printf(" hdr=%s", scratch); | |
292 | printf("\n"); | |
293 | } | |
294 | } | |
295 | ||
296 | static void | |
297 | process_datagram(struct sflow_xdr *x) | |
298 | { | |
299 | uint32_t samples, s; | |
300 | ||
301 | SFLOWXDR_assert(x, (sflowxdr_next(x) == SFLOW_VERSION_5)); | |
302 | ||
303 | /* Read the sFlow header. */ | |
304 | x->agentAddr.type = sflowxdr_next(x); | |
305 | switch (x->agentAddr.type) { | |
306 | case SFLOW_ADDRTYPE_IP4: | |
307 | x->agentAddr.a.ip4 = sflowxdr_next_n(x); | |
308 | break; | |
309 | ||
310 | case SFLOW_ADDRTYPE_IP6: | |
311 | x->agentAddr.a.ip6[0] = sflowxdr_next_n(x); | |
312 | x->agentAddr.a.ip6[1] = sflowxdr_next_n(x); | |
313 | x->agentAddr.a.ip6[2] = sflowxdr_next_n(x); | |
314 | x->agentAddr.a.ip6[3] = sflowxdr_next_n(x); | |
315 | break; | |
316 | ||
317 | case SFLOW_ADDRTYPE_undefined: | |
318 | default: | |
319 | SFLOWXDR_throw(x); | |
320 | break; | |
321 | } | |
322 | x->subAgentId = sflowxdr_next(x); | |
323 | x->dgramSeqNo = sflowxdr_next(x); | |
324 | x->uptime_mS = sflowxdr_next(x); | |
325 | ||
326 | /* Store the agent address as a string. */ | |
327 | if (x->agentAddr.type == SFLOW_ADDRTYPE_IP6) { | |
328 | snprintf(x->agentIPStr, SFLOW_MAX_AGENTIP_STRLEN, | |
329 | "%04x:%04x:%04x:%04x", | |
330 | x->agentAddr.a.ip6[0], | |
331 | x->agentAddr.a.ip6[1], | |
332 | x->agentAddr.a.ip6[2], | |
333 | x->agentAddr.a.ip6[3]); | |
334 | } else { | |
335 | snprintf(x->agentIPStr, SFLOW_MAX_AGENTIP_STRLEN, | |
336 | IP_FMT, IP_ARGS(x->agentAddr.a.ip4)); | |
337 | } | |
338 | ||
339 | /* Array of flow/counter samples. */ | |
340 | samples = sflowxdr_next(x); | |
341 | for (s = 0; s < samples; s++) { | |
342 | uint32_t sType = sflowxdr_next(x); | |
343 | uint32_t sQuads = sflowxdr_next(x) >> 2; | |
344 | uint32_t sMark = sflowxdr_mark(x, sQuads); | |
345 | SFLOWXDR_assert(x, sflowxdr_more(x, sQuads)); | |
346 | ||
347 | switch (sType) { | |
348 | case SFLOW_COUNTERS_SAMPLE_EXPANDED: | |
349 | case SFLOW_COUNTERS_SAMPLE: | |
350 | { | |
351 | uint32_t csElements, e; | |
352 | uint32_t ceTag, ceQuads, ceMark, csEnd; | |
353 | ||
354 | x->csSeqNo = sflowxdr_next(x); | |
355 | if (sType == SFLOW_COUNTERS_SAMPLE_EXPANDED) { | |
356 | x->dsClass = sflowxdr_next(x); | |
357 | x->dsIndex = sflowxdr_next(x); | |
358 | } else { | |
359 | uint32_t dsCombined = sflowxdr_next(x); | |
360 | x->dsClass = dsCombined >> 24; | |
361 | x->dsIndex = dsCombined & 0x00FFFFFF; | |
362 | } | |
363 | ||
364 | csElements = sflowxdr_next(x); | |
365 | for (e = 0; e < csElements; e++) { | |
366 | SFLOWXDR_assert(x, sflowxdr_more(x,2)); | |
367 | ceTag = sflowxdr_next(x); | |
368 | ceQuads = sflowxdr_next(x) >> 2; | |
369 | ceMark = sflowxdr_mark(x, ceQuads); | |
370 | SFLOWXDR_assert(x, sflowxdr_more(x,ceQuads)); | |
371 | /* Only care about selected structures. Just record their | |
372 | * offsets here. We'll read the fields out later. */ | |
373 | switch (ceTag) { | |
374 | case SFLOW_TAG_CTR_IFCOUNTERS: | |
375 | sflowxdr_mark_unique(x, &x->offset.IFCOUNTERS); | |
376 | break; | |
377 | ||
378 | /* Add others here... */ | |
379 | } | |
380 | ||
381 | sflowxdr_skip(x, ceQuads); | |
382 | SFLOWXDR_assert(x, sflowxdr_mark_ok(x, ceMark)); | |
383 | } | |
384 | ||
385 | csEnd = sflowxdr_mark(x, 0); | |
386 | process_counter_sample(x); | |
387 | /* Make sure we pick up the decoding where we left off. */ | |
388 | sflowxdr_setc(x, csEnd); | |
389 | ||
390 | /* Clear the offsets for the next sample. */ | |
391 | memset(&x->offset, 0, sizeof x->offset); | |
392 | } | |
393 | break; | |
394 | ||
395 | case SFLOW_FLOW_SAMPLE: | |
396 | case SFLOW_FLOW_SAMPLE_EXPANDED: | |
397 | { | |
398 | uint32_t fsElements, e; | |
399 | uint32_t feTag, feQuads, feMark, fsEnd; | |
400 | x->fsSeqNo = sflowxdr_next(x); | |
401 | if (sType == SFLOW_FLOW_SAMPLE_EXPANDED) { | |
402 | x->dsClass = sflowxdr_next(x); | |
403 | x->dsIndex = sflowxdr_next(x); | |
404 | } else { | |
405 | uint32_t dsCombined = sflowxdr_next(x); | |
406 | x->dsClass = dsCombined >> 24; | |
407 | x->dsIndex = dsCombined & 0x00FFFFFF; | |
408 | } | |
409 | x->meanSkipCount = sflowxdr_next(x); | |
410 | x->samplePool = sflowxdr_next(x); | |
411 | x->dropEvents = sflowxdr_next(x); | |
412 | if (sType == SFLOW_FLOW_SAMPLE_EXPANDED) { | |
413 | x->inputPortFormat = sflowxdr_next(x); | |
414 | x->inputPort = sflowxdr_next(x); | |
415 | x->outputPortFormat = sflowxdr_next(x); | |
416 | x->outputPort = sflowxdr_next(x); | |
417 | } else { | |
418 | uint32_t inp, outp; | |
419 | ||
420 | inp = sflowxdr_next(x); | |
421 | outp = sflowxdr_next(x); | |
422 | x->inputPortFormat = inp >> 30; | |
423 | x->inputPort = inp & 0x3fffffff; | |
424 | x->outputPortFormat = outp >> 30; | |
425 | x->outputPort = outp & 0x3fffffff; | |
426 | } | |
427 | fsElements = sflowxdr_next(x); | |
428 | for (e = 0; e < fsElements; e++) { | |
429 | SFLOWXDR_assert(x, sflowxdr_more(x,2)); | |
430 | feTag = sflowxdr_next(x); | |
431 | feQuads = sflowxdr_next(x) >> 2; | |
432 | feMark = sflowxdr_mark(x, feQuads); | |
433 | SFLOWXDR_assert(x, sflowxdr_more(x,feQuads)); | |
434 | /* Only care about selected structures. Just record their | |
435 | * offsets here. We'll read the fields out below. */ | |
436 | switch (feTag) { | |
437 | case SFLOW_TAG_PKT_HEADER: | |
438 | sflowxdr_mark_unique(x, &x->offset.HEADER); | |
439 | break; | |
440 | ||
441 | case SFLOW_TAG_PKT_SWITCH: | |
442 | sflowxdr_mark_unique(x, &x->offset.SWITCH); | |
443 | break; | |
444 | ||
445 | /* Add others here... */ | |
446 | } | |
447 | ||
448 | sflowxdr_skip(x, feQuads); | |
449 | SFLOWXDR_assert(x, sflowxdr_mark_ok(x, feMark)); | |
450 | } | |
451 | ||
452 | fsEnd = sflowxdr_mark(x, 0); | |
453 | process_flow_sample(x); | |
454 | /* Make sure we pick up the decoding where we left off. */ | |
455 | sflowxdr_setc(x, fsEnd); | |
456 | ||
457 | /* Clear the offsets for the next counter/flow sample. */ | |
458 | memset(&x->offset, 0, sizeof x->offset); | |
459 | } | |
460 | break; | |
461 | ||
462 | default: | |
463 | /* Skip other sample types. */ | |
464 | sflowxdr_skip(x, sQuads); | |
465 | } | |
466 | SFLOWXDR_assert(x, sflowxdr_mark_ok(x, sMark)); | |
467 | } | |
468 | } | |
469 | ||
470 | static void | |
471 | print_sflow(struct ofpbuf *buf) | |
472 | { | |
473 | char *dgram_buf; | |
474 | int dgram_len = buf->size; | |
475 | struct sflow_xdr xdrDatagram; | |
476 | struct sflow_xdr *x = &xdrDatagram; | |
477 | ||
478 | memset(x, 0, sizeof *x); | |
479 | if (SFLOWXDR_try(x)) { | |
480 | SFLOWXDR_assert(x, (dgram_buf = ofpbuf_try_pull(buf, buf->size))); | |
481 | sflowxdr_init(x, dgram_buf, dgram_len); | |
482 | SFLOWXDR_assert(x, dgram_len >= SFLOW_MIN_LEN); | |
483 | process_datagram(x); | |
484 | } else { | |
485 | // CATCH | |
486 | printf("\n>>>>> ERROR in " __FILE__ " at line %u\n", x->errline); | |
487 | } | |
488 | } | |
489 | ||
490 | int | |
491 | main(int argc, char *argv[]) | |
492 | { | |
493 | struct unixctl_server *server; | |
494 | enum { MAX_RECV = 1500 }; | |
495 | const char *target; | |
496 | struct ofpbuf buf; | |
497 | bool exiting = false; | |
498 | int error; | |
499 | int sock; | |
500 | ||
501 | proctitle_init(argc, argv); | |
502 | set_program_name(argv[0]); | |
503 | parse_options(argc, argv); | |
504 | ||
505 | if (argc - optind != 1) { | |
506 | ovs_fatal(0, "exactly one non-option argument required " | |
507 | "(use --help for help)"); | |
508 | } | |
509 | target = argv[optind]; | |
510 | ||
511 | sock = inet_open_passive(SOCK_DGRAM, target, 0, NULL, 0); | |
512 | if (sock < 0) { | |
513 | ovs_fatal(0, "%s: failed to open (%s)", argv[1], strerror(-sock)); | |
514 | } | |
515 | ||
516 | daemon_save_fd(STDOUT_FILENO); | |
517 | daemonize_start(); | |
518 | ||
519 | error = unixctl_server_create(NULL, &server); | |
520 | if (error) { | |
521 | ovs_fatal(error, "failed to create unixctl server"); | |
522 | } | |
523 | unixctl_command_register("exit", "", 0, 0, test_sflow_exit, &exiting); | |
524 | ||
525 | daemonize_complete(); | |
526 | ||
527 | ofpbuf_init(&buf, MAX_RECV); | |
528 | for (;;) { | |
529 | int retval; | |
530 | ||
531 | unixctl_server_run(server); | |
532 | ||
533 | ofpbuf_clear(&buf); | |
534 | do { | |
535 | retval = read(sock, buf.data, buf.allocated); | |
536 | } while (retval < 0 && errno == EINTR); | |
537 | if (retval > 0) { | |
538 | ofpbuf_put_uninit(&buf, retval); | |
539 | print_sflow(&buf); | |
540 | fflush(stdout); | |
541 | } | |
542 | ||
543 | if (exiting) { | |
544 | break; | |
545 | } | |
546 | ||
547 | poll_fd_wait(sock, POLLIN); | |
548 | unixctl_server_wait(server); | |
549 | poll_block(); | |
550 | } | |
551 | ||
552 | return 0; | |
553 | } | |
554 | ||
555 | static void | |
556 | parse_options(int argc, char *argv[]) | |
557 | { | |
558 | enum { | |
559 | DAEMON_OPTION_ENUMS | |
560 | }; | |
561 | static struct option long_options[] = { | |
562 | {"verbose", optional_argument, NULL, 'v'}, | |
563 | {"help", no_argument, NULL, 'h'}, | |
564 | DAEMON_LONG_OPTIONS, | |
565 | {NULL, 0, NULL, 0}, | |
566 | }; | |
567 | char *short_options = long_options_to_short_options(long_options); | |
568 | ||
569 | for (;;) { | |
570 | int c = getopt_long(argc, argv, short_options, long_options, NULL); | |
571 | if (c == -1) { | |
572 | break; | |
573 | } | |
574 | ||
575 | switch (c) { | |
576 | case 'h': | |
577 | usage(); | |
578 | ||
579 | case 'v': | |
580 | vlog_set_verbosity(optarg); | |
581 | break; | |
582 | ||
583 | DAEMON_OPTION_HANDLERS | |
584 | ||
585 | case '?': | |
586 | exit(EXIT_FAILURE); | |
587 | ||
588 | default: | |
589 | abort(); | |
590 | } | |
591 | } | |
592 | free(short_options); | |
593 | } | |
594 | ||
595 | static void | |
596 | usage(void) | |
597 | { | |
598 | printf("%s: sflow collector test utility\n" | |
599 | "usage: %s [OPTIONS] PORT[:IP]\n" | |
600 | "where PORT is the UDP port to listen on and IP is optionally\n" | |
601 | "the IP address to listen on.\n", | |
602 | program_name, program_name); | |
603 | daemon_usage(); | |
604 | vlog_usage(); | |
605 | printf("\nOther options:\n" | |
606 | " -h, --help display this help message\n"); | |
607 | exit(EXIT_SUCCESS); | |
608 | } | |
609 | ||
610 | static void | |
611 | test_sflow_exit(struct unixctl_conn *conn, | |
612 | int argc OVS_UNUSED, const char *argv[] OVS_UNUSED, | |
613 | void *exiting_) | |
614 | { | |
615 | bool *exiting = exiting_; | |
616 | *exiting = true; | |
617 | unixctl_command_reply(conn, NULL); | |
618 | } |