Commit | Line | Data |
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50d16976 JA |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
142575e6 | 3 | #include <stdarg.h> |
50d16976 JA |
4 | #include <unistd.h> |
5 | #include <limits.h> | |
50d16976 JA |
6 | #include <errno.h> |
7 | #include <fcntl.h> | |
8 | #include <sys/poll.h> | |
50d16976 JA |
9 | #include <sys/types.h> |
10 | #include <sys/wait.h> | |
50d16976 | 11 | #include <sys/mman.h> |
50d16976 JA |
12 | #include <netinet/in.h> |
13 | #include <arpa/inet.h> | |
14 | #include <netdb.h> | |
15 | ||
16 | #include "fio.h" | |
132159a5 | 17 | #include "server.h" |
fcee5ff6 | 18 | #include "crc/crc16.h" |
50d16976 | 19 | |
132159a5 | 20 | int fio_net_port = 8765; |
50d16976 | 21 | |
009b1be4 JA |
22 | int exit_backend = 0; |
23 | ||
132159a5 JA |
24 | static char *job_buf; |
25 | static unsigned int job_cur_len; | |
26 | static unsigned int job_max_len; | |
27 | ||
37db14fe JA |
28 | static int server_fd; |
29 | ||
132159a5 JA |
30 | int fio_send_data(int sk, const void *p, unsigned int len) |
31 | { | |
32 | do { | |
33 | int ret = send(sk, p, len, 0); | |
34 | ||
35 | if (ret > 0) { | |
36 | len -= ret; | |
37 | if (!len) | |
38 | break; | |
39 | p += ret; | |
40 | continue; | |
41 | } else if (!ret) | |
42 | break; | |
43 | else if (errno == EAGAIN || errno == EINTR) | |
44 | continue; | |
45 | } while (!exit_backend); | |
46 | ||
47 | if (!len) | |
48 | return 0; | |
49 | ||
50 | return 1; | |
51 | } | |
52 | ||
53 | int fio_recv_data(int sk, void *p, unsigned int len) | |
54 | { | |
55 | do { | |
56 | int ret = recv(sk, p, len, MSG_WAITALL); | |
57 | ||
58 | if (ret > 0) { | |
59 | len -= ret; | |
60 | if (!len) | |
61 | break; | |
62 | p += ret; | |
63 | continue; | |
64 | } else if (!ret) | |
65 | break; | |
66 | else if (errno == EAGAIN || errno == EINTR) | |
67 | continue; | |
68 | } while (!exit_backend); | |
69 | ||
70 | if (!len) | |
71 | return 0; | |
72 | ||
73 | return -1; | |
74 | } | |
75 | ||
76 | static int verify_convert_cmd(struct fio_net_cmd *cmd) | |
77 | { | |
fcee5ff6 | 78 | uint16_t crc; |
132159a5 | 79 | |
fcee5ff6 JA |
80 | cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); |
81 | cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); | |
132159a5 | 82 | |
fcee5ff6 JA |
83 | crc = crc16(cmd, FIO_NET_CMD_CRC_SZ); |
84 | if (crc != cmd->cmd_crc16) { | |
132159a5 | 85 | log_err("fio: server bad crc on command (got %x, wanted %x)\n", |
fcee5ff6 | 86 | cmd->cmd_crc16, crc); |
132159a5 JA |
87 | return 1; |
88 | } | |
89 | ||
90 | cmd->version = le16_to_cpu(cmd->version); | |
91 | cmd->opcode = le16_to_cpu(cmd->opcode); | |
92 | cmd->flags = le32_to_cpu(cmd->flags); | |
93 | cmd->serial = le64_to_cpu(cmd->serial); | |
94 | cmd->pdu_len = le32_to_cpu(cmd->pdu_len); | |
95 | ||
96 | switch (cmd->version) { | |
97 | case FIO_SERVER_VER1: | |
98 | break; | |
99 | default: | |
100 | log_err("fio: bad server cmd version %d\n", cmd->version); | |
101 | return 1; | |
102 | } | |
103 | ||
104 | if (cmd->pdu_len > FIO_SERVER_MAX_PDU) { | |
105 | log_err("fio: command payload too large: %u\n", cmd->pdu_len); | |
106 | return 1; | |
107 | } | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
37db14fe | 112 | struct fio_net_cmd *fio_net_cmd_read(int sk) |
132159a5 JA |
113 | { |
114 | struct fio_net_cmd cmd, *ret = NULL; | |
fcee5ff6 | 115 | uint16_t crc; |
132159a5 JA |
116 | |
117 | if (fio_recv_data(sk, &cmd, sizeof(cmd))) | |
118 | return NULL; | |
119 | ||
120 | /* We have a command, verify it and swap if need be */ | |
121 | if (verify_convert_cmd(&cmd)) | |
122 | return NULL; | |
123 | ||
124 | /* Command checks out, alloc real command and fill in */ | |
125 | ret = malloc(sizeof(cmd) + cmd.pdu_len); | |
126 | memcpy(ret, &cmd, sizeof(cmd)); | |
127 | ||
128 | if (!ret->pdu_len) | |
129 | return ret; | |
130 | ||
131 | /* There's payload, get it */ | |
132 | if (fio_recv_data(sk, (void *) ret + sizeof(*ret), ret->pdu_len)) { | |
133 | free(ret); | |
134 | return NULL; | |
135 | } | |
136 | ||
137 | /* Verify payload crc */ | |
fcee5ff6 JA |
138 | crc = crc16(ret->payload, ret->pdu_len); |
139 | if (crc != ret->pdu_crc16) { | |
132159a5 | 140 | log_err("fio: server bad crc on payload (got %x, wanted %x)\n", |
fcee5ff6 | 141 | ret->pdu_crc16, crc); |
132159a5 JA |
142 | free(ret); |
143 | return NULL; | |
144 | } | |
145 | ||
132159a5 JA |
146 | return ret; |
147 | } | |
148 | ||
149 | void fio_net_cmd_crc(struct fio_net_cmd *cmd) | |
150 | { | |
151 | uint32_t pdu_len; | |
152 | ||
fcee5ff6 | 153 | cmd->cmd_crc16 = cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ)); |
132159a5 JA |
154 | |
155 | pdu_len = le32_to_cpu(cmd->pdu_len); | |
156 | if (pdu_len) | |
fcee5ff6 | 157 | cmd->pdu_crc16 = cpu_to_le16(crc16(cmd->payload, pdu_len)); |
132159a5 JA |
158 | } |
159 | ||
160 | static int send_simple_command(int sk, uint16_t opcode, uint64_t serial) | |
161 | { | |
162 | struct fio_net_cmd cmd = { | |
163 | .version = cpu_to_le16(FIO_SERVER_VER1), | |
164 | .opcode = cpu_to_le16(opcode), | |
bdab4441 | 165 | .serial = cpu_to_le64(serial), |
132159a5 JA |
166 | }; |
167 | ||
168 | fio_net_cmd_crc(&cmd); | |
169 | ||
170 | return fio_send_data(sk, &cmd, sizeof(cmd)); | |
171 | } | |
172 | ||
173 | /* | |
174 | * Send an ack for this command | |
175 | */ | |
176 | static int ack_command(int sk, struct fio_net_cmd *cmd) | |
177 | { | |
fcee5ff6 | 178 | #if 0 |
132159a5 | 179 | return send_simple_command(sk, FIO_NET_CMD_ACK, cmd->serial); |
fcee5ff6 JA |
180 | #else |
181 | return 0; | |
182 | #endif | |
132159a5 JA |
183 | } |
184 | ||
185 | #if 0 | |
186 | static int nak_command(int sk, struct fio_net_cmd *cmd) | |
187 | { | |
188 | return send_simple_command(sk, FIO_NET_CMD_NAK, cmd->serial); | |
189 | } | |
190 | #endif | |
191 | ||
192 | static int handle_cur_job(struct fio_net_cmd *cmd, int done) | |
193 | { | |
194 | unsigned int left = job_max_len - job_cur_len; | |
195 | int ret = 0; | |
196 | ||
197 | if (left < cmd->pdu_len) { | |
198 | job_buf = realloc(job_buf, job_max_len + 2 * cmd->pdu_len); | |
199 | job_max_len += 2 * cmd->pdu_len; | |
200 | } | |
201 | ||
202 | memcpy(job_buf + job_cur_len, cmd->payload, cmd->pdu_len); | |
203 | job_cur_len += cmd->pdu_len; | |
204 | ||
205 | if (done) { | |
206 | parse_jobs_ini(job_buf, 1, 0); | |
207 | ret = exec_run(); | |
208 | reset_fio_state(); | |
209 | free(job_buf); | |
210 | job_buf = NULL; | |
211 | job_cur_len = job_max_len = 0; | |
212 | } | |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
217 | static int handle_command(struct fio_net_cmd *cmd) | |
218 | { | |
219 | int ret; | |
220 | ||
221 | switch (cmd->opcode) { | |
222 | case FIO_NET_CMD_QUIT: | |
223 | exit_backend = 1; | |
224 | return 1; | |
225 | case FIO_NET_CMD_ACK: | |
226 | return 0; | |
227 | case FIO_NET_CMD_NAK: | |
228 | return 1; | |
229 | case FIO_NET_CMD_JOB: | |
230 | ret = handle_cur_job(cmd, 0); | |
231 | break; | |
232 | case FIO_NET_CMD_JOB_END: | |
233 | ret = handle_cur_job(cmd, 1); | |
234 | break; | |
235 | default: | |
236 | log_err("fio: unknown opcode: %d\n", cmd->opcode); | |
237 | ret = 1; | |
238 | } | |
239 | ||
240 | return ret; | |
241 | } | |
242 | ||
243 | static int handle_connection(int sk) | |
244 | { | |
245 | struct fio_net_cmd *cmd = NULL; | |
246 | int ret = 0; | |
247 | ||
248 | /* read forever */ | |
249 | while (!exit_backend) { | |
37db14fe | 250 | cmd = fio_net_cmd_read(sk); |
132159a5 JA |
251 | if (!cmd) { |
252 | ret = 1; | |
253 | break; | |
254 | } | |
255 | ||
256 | ret = ack_command(sk, cmd); | |
257 | if (ret) | |
258 | break; | |
259 | ||
260 | ret = handle_command(cmd); | |
261 | if (ret) | |
262 | break; | |
263 | ||
264 | free(cmd); | |
265 | } | |
266 | ||
267 | if (cmd) | |
268 | free(cmd); | |
269 | ||
270 | return ret; | |
271 | } | |
272 | ||
50d16976 JA |
273 | static int accept_loop(int listen_sk) |
274 | { | |
275 | struct sockaddr addr; | |
276 | unsigned int len = sizeof(addr); | |
009b1be4 | 277 | struct pollfd pfd; |
132159a5 | 278 | int ret, sk, flags, exitval = 0; |
50d16976 | 279 | |
009b1be4 JA |
280 | flags = fcntl(listen_sk, F_GETFL); |
281 | flags |= O_NONBLOCK; | |
282 | fcntl(listen_sk, F_SETFL, flags); | |
50d16976 | 283 | again: |
009b1be4 JA |
284 | pfd.fd = listen_sk; |
285 | pfd.events = POLLIN; | |
286 | do { | |
287 | ret = poll(&pfd, 1, 100); | |
288 | if (ret < 0) { | |
289 | if (errno == EINTR) | |
290 | break; | |
fcee5ff6 | 291 | log_err("fio: poll: %s\n", strerror(errno)); |
009b1be4 JA |
292 | goto out; |
293 | } else if (!ret) | |
294 | continue; | |
295 | ||
296 | if (pfd.revents & POLLIN) | |
297 | break; | |
298 | } while (!exit_backend); | |
299 | ||
300 | if (exit_backend) | |
301 | goto out; | |
302 | ||
50d16976 | 303 | sk = accept(listen_sk, &addr, &len); |
50d16976 | 304 | if (sk < 0) { |
690e09ae | 305 | log_err("fio: accept: %s\n", strerror(errno)); |
50d16976 JA |
306 | return -1; |
307 | } | |
308 | ||
37db14fe JA |
309 | server_fd = sk; |
310 | ||
132159a5 | 311 | exitval = handle_connection(sk); |
50d16976 | 312 | |
37db14fe | 313 | server_fd = -1; |
50d16976 | 314 | close(sk); |
5c341e9a | 315 | |
009b1be4 | 316 | if (!exit_backend) |
5c341e9a JA |
317 | goto again; |
318 | ||
009b1be4 | 319 | out: |
132159a5 | 320 | return exitval; |
50d16976 JA |
321 | } |
322 | ||
323 | int fio_server(void) | |
324 | { | |
325 | struct sockaddr_in saddr_in; | |
326 | struct sockaddr addr; | |
327 | unsigned int len; | |
afcf7758 | 328 | int sk, opt, ret; |
50d16976 JA |
329 | |
330 | sk = socket(AF_INET, SOCK_STREAM, 0); | |
331 | if (sk < 0) { | |
690e09ae | 332 | log_err("fio: socket: %s\n", strerror(errno)); |
50d16976 JA |
333 | return -1; |
334 | } | |
335 | ||
336 | opt = 1; | |
337 | if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
690e09ae | 338 | log_err("fio: setsockopt: %s\n", strerror(errno)); |
50d16976 JA |
339 | return -1; |
340 | } | |
341 | #ifdef SO_REUSEPORT | |
342 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
690e09ae | 343 | log_err("fio: setsockopt: %s\n", strerror(errno)); |
50d16976 JA |
344 | return 1; |
345 | } | |
346 | #endif | |
347 | ||
348 | saddr_in.sin_family = AF_INET; | |
349 | saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); | |
132159a5 | 350 | saddr_in.sin_port = htons(fio_net_port); |
50d16976 JA |
351 | |
352 | if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) { | |
690e09ae | 353 | log_err("fio: bind: %s\n", strerror(errno)); |
50d16976 JA |
354 | return -1; |
355 | } | |
356 | ||
357 | if (listen(sk, 1) < 0) { | |
690e09ae | 358 | log_err("fio: listen: %s\n", strerror(errno)); |
50d16976 JA |
359 | return -1; |
360 | } | |
361 | ||
362 | len = sizeof(addr); | |
363 | if (getsockname(sk, &addr, &len) < 0) { | |
690e09ae | 364 | log_err("fio: getsockname: %s\n", strerror(errno)); |
50d16976 JA |
365 | return -1; |
366 | } | |
367 | ||
afcf7758 JA |
368 | ret = accept_loop(sk); |
369 | close(sk); | |
370 | return ret; | |
50d16976 | 371 | } |
37db14fe | 372 | |
142575e6 | 373 | int fio_server_text_output(const char *buf, unsigned int len) |
37db14fe JA |
374 | { |
375 | struct fio_net_cmd *cmd; | |
142575e6 | 376 | int size = sizeof(*cmd) + len; |
37db14fe | 377 | |
142575e6 | 378 | cmd = malloc(size); |
4d8f8780 | 379 | fio_init_net_cmd(cmd, FIO_NET_CMD_TEXT, buf, len); |
37db14fe JA |
380 | fio_net_cmd_crc(cmd); |
381 | ||
142575e6 | 382 | fio_send_data(server_fd, cmd, size); |
37db14fe | 383 | free(cmd); |
142575e6 JA |
384 | return size; |
385 | } | |
386 | ||
387 | int fio_server_log(const char *format, ...) | |
388 | { | |
389 | char buffer[1024]; | |
390 | va_list args; | |
82fa6b21 | 391 | size_t len; |
142575e6 JA |
392 | |
393 | va_start(args, format); | |
82fa6b21 | 394 | len = vsnprintf(buffer, sizeof(buffer), format, args); |
142575e6 JA |
395 | va_end(args); |
396 | ||
82fa6b21 | 397 | return fio_server_text_output(buffer, len); |
37db14fe | 398 | } |