blob: 9b13df8b5496226dd44fe310abc3d681c79aaa9f [file] [log] [blame]
Jens Axboe50d16972011-09-29 17:45:28 -06001#include <stdio.h>
2#include <stdlib.h>
Jens Axboe142575e2011-09-30 17:35:45 -06003#include <stdarg.h>
Jens Axboe50d16972011-09-29 17:45:28 -06004#include <unistd.h>
5#include <limits.h>
Jens Axboe50d16972011-09-29 17:45:28 -06006#include <errno.h>
7#include <fcntl.h>
8#include <sys/poll.h>
Jens Axboe50d16972011-09-29 17:45:28 -06009#include <sys/types.h>
10#include <sys/wait.h>
Jens Axboed05c4a02011-10-05 00:16:11 +020011#include <sys/socket.h>
Jens Axboe87aa8f12011-10-06 21:24:13 +020012#include <sys/stat.h>
13#include <sys/un.h>
Bruce Cran1f51bba2013-04-12 15:40:21 +020014#include <sys/uio.h>
Jens Axboe50d16972011-09-29 17:45:28 -060015#include <netinet/in.h>
16#include <arpa/inet.h>
17#include <netdb.h>
Jens Axboee46d8092011-10-03 09:11:02 +020018#include <syslog.h>
Jens Axboe9e22ecb2011-10-04 14:50:21 +020019#include <signal.h>
Jens Axboe3989b142013-04-12 13:13:24 +020020#ifdef CONFIG_ZLIB
Jens Axboe1b427252012-03-14 15:03:03 +010021#include <zlib.h>
Jens Axboe3989b142013-04-12 13:13:24 +020022#endif
Jens Axboe50d16972011-09-29 17:45:28 -060023
24#include "fio.h"
Jens Axboe132159a2011-09-30 15:01:32 -060025#include "server.h"
Jens Axboefcee5ff2011-09-30 22:50:39 -060026#include "crc/crc16.h"
Jens Axboec7c6cb42011-10-13 14:12:40 +020027#include "lib/ieee754.h"
Jens Axboe50d16972011-09-29 17:45:28 -060028
Stephen M. Cameron5adc2442012-02-24 08:17:31 +010029int fio_net_port = FIO_NET_PORT;
Jens Axboe50d16972011-09-29 17:45:28 -060030
Jens Axboe009b1be2011-09-29 18:27:02 -060031int exit_backend = 0;
32
Jens Axboe46c48f12011-10-01 12:50:51 -060033static int server_fd = -1;
Jens Axboe87aa8f12011-10-06 21:24:13 +020034static char *fio_server_arg;
35static char *bind_sock;
36static struct sockaddr_in saddr_in;
Jens Axboe811826b2011-10-24 09:11:50 +020037static struct sockaddr_in6 saddr_in6;
Jens Axboe811826b2011-10-24 09:11:50 +020038static int use_ipv6;
Jens Axboe3989b142013-04-12 13:13:24 +020039#ifdef CONFIG_ZLIB
40static unsigned int has_zlib = 1;
41#else
42static unsigned int has_zlib = 0;
43#endif
44static unsigned int use_zlib;
Jens Axboe37db14f2011-09-30 17:00:42 -060045
Jens Axboe122c7722012-03-19 09:13:15 +010046struct fio_fork_item {
47 struct flist_head list;
48 int exitval;
49 int signal;
50 int exited;
51 pid_t pid;
52};
53
Jens Axboe89c17072011-10-11 10:15:51 +020054static const char *fio_server_ops[FIO_NET_CMD_NR] = {
55 "",
56 "QUIT",
57 "EXIT",
58 "JOB",
59 "JOBLINE",
60 "TEXT",
61 "TS",
62 "GS",
63 "SEND_ETA",
64 "ETA",
65 "PROBE",
66 "START",
Jens Axboed09a64a2011-10-13 11:38:56 +020067 "STOP",
68 "DISK_UTIL",
Jens Axboeb9d2f302012-03-08 20:36:28 +010069 "SERVER_START",
Jens Axboe807f9972012-03-02 10:25:24 +010070 "ADD_JOB",
Jens Axboeb9d2f302012-03-08 20:36:28 +010071 "CMD_RUN"
Jens Axboec70e63e2012-03-15 08:26:18 +010072 "CMD_IOLOG",
Jens Axboe89c17072011-10-11 10:15:51 +020073};
74
75const char *fio_server_op(unsigned int op)
76{
77 static char buf[32];
78
79 if (op < FIO_NET_CMD_NR)
80 return fio_server_ops[op];
81
82 sprintf(buf, "UNKNOWN/%d", op);
83 return buf;
84}
85
Jens Axboe5235f622012-03-14 21:25:51 +010086static ssize_t iov_total_len(const struct iovec *iov, int count)
Jens Axboe132159a2011-09-30 15:01:32 -060087{
Jens Axboe5235f622012-03-14 21:25:51 +010088 ssize_t ret = 0;
89
90 while (count--) {
91 ret += iov->iov_len;
92 iov++;
93 }
94
95 return ret;
96}
97
98static int fio_sendv_data(int sk, struct iovec *iov, int count)
99{
100 ssize_t total_len = iov_total_len(iov, count);
101 ssize_t ret;
Jens Axboe794d69c2011-10-01 08:48:50 -0600102
Jens Axboe132159a2011-09-30 15:01:32 -0600103 do {
Jens Axboe5235f622012-03-14 21:25:51 +0100104 ret = writev(sk, iov, count);
Jens Axboe132159a2011-09-30 15:01:32 -0600105 if (ret > 0) {
Jens Axboe5235f622012-03-14 21:25:51 +0100106 total_len -= ret;
107 if (!total_len)
Jens Axboe132159a2011-09-30 15:01:32 -0600108 break;
Jens Axboe5235f622012-03-14 21:25:51 +0100109
110 while (ret) {
111 if (ret >= iov->iov_len) {
112 ret -= iov->iov_len;
113 iov++;
114 continue;
115 }
116 iov->iov_base += ret;
117 iov->iov_len -= ret;
118 ret = 0;
119 }
Jens Axboe132159a2011-09-30 15:01:32 -0600120 } else if (!ret)
121 break;
122 else if (errno == EAGAIN || errno == EINTR)
123 continue;
Jens Axboe7b821682011-10-11 12:16:32 +0200124 else
125 break;
Jens Axboe132159a2011-09-30 15:01:32 -0600126 } while (!exit_backend);
127
Jens Axboe5235f622012-03-14 21:25:51 +0100128 if (!total_len)
Jens Axboe132159a2011-09-30 15:01:32 -0600129 return 0;
130
Jens Axboe8b4e61b2012-03-09 17:10:54 +0100131 if (errno)
132 return -errno;
133
Jens Axboe132159a2011-09-30 15:01:32 -0600134 return 1;
135}
136
Jens Axboe5235f622012-03-14 21:25:51 +0100137int fio_send_data(int sk, const void *p, unsigned int len)
138{
139 struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
140
141 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
142
143 return fio_sendv_data(sk, &iov, 1);
144}
145
Jens Axboe132159a2011-09-30 15:01:32 -0600146int fio_recv_data(int sk, void *p, unsigned int len)
147{
148 do {
149 int ret = recv(sk, p, len, MSG_WAITALL);
150
151 if (ret > 0) {
152 len -= ret;
153 if (!len)
154 break;
155 p += ret;
156 continue;
157 } else if (!ret)
158 break;
159 else if (errno == EAGAIN || errno == EINTR)
160 continue;
Jens Axboe7b821682011-10-11 12:16:32 +0200161 else
162 break;
Jens Axboe132159a2011-09-30 15:01:32 -0600163 } while (!exit_backend);
164
165 if (!len)
166 return 0;
167
168 return -1;
169}
170
171static int verify_convert_cmd(struct fio_net_cmd *cmd)
172{
Jens Axboefcee5ff2011-09-30 22:50:39 -0600173 uint16_t crc;
Jens Axboe132159a2011-09-30 15:01:32 -0600174
Jens Axboefcee5ff2011-09-30 22:50:39 -0600175 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
176 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
Jens Axboe132159a2011-09-30 15:01:32 -0600177
Jens Axboe25dfa842012-02-29 10:01:34 +0100178 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
Jens Axboefcee5ff2011-09-30 22:50:39 -0600179 if (crc != cmd->cmd_crc16) {
Jens Axboe132159a2011-09-30 15:01:32 -0600180 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
Jens Axboefcee5ff2011-09-30 22:50:39 -0600181 cmd->cmd_crc16, crc);
Jens Axboe132159a2011-09-30 15:01:32 -0600182 return 1;
183 }
184
185 cmd->version = le16_to_cpu(cmd->version);
186 cmd->opcode = le16_to_cpu(cmd->opcode);
187 cmd->flags = le32_to_cpu(cmd->flags);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200188 cmd->tag = le64_to_cpu(cmd->tag);
Jens Axboe132159a2011-09-30 15:01:32 -0600189 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
190
191 switch (cmd->version) {
Jens Axboefa2ea802011-10-08 21:07:29 +0200192 case FIO_SERVER_VER:
Jens Axboe132159a2011-09-30 15:01:32 -0600193 break;
194 default:
195 log_err("fio: bad server cmd version %d\n", cmd->version);
196 return 1;
197 }
198
Jens Axboeb9d2f302012-03-08 20:36:28 +0100199 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
Jens Axboe132159a2011-09-30 15:01:32 -0600200 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
201 return 1;
202 }
203
204 return 0;
205}
206
Jens Axboea64e88d2011-10-03 14:20:01 +0200207/*
208 * Read (and defragment, if necessary) incoming commands
209 */
Jens Axboee951bdc2011-10-05 21:58:45 +0200210struct fio_net_cmd *fio_net_recv_cmd(int sk)
Jens Axboe132159a2011-09-30 15:01:32 -0600211{
Jens Axboea64e88d2011-10-03 14:20:01 +0200212 struct fio_net_cmd cmd, *cmdret = NULL;
213 size_t cmd_size = 0, pdu_offset = 0;
Jens Axboefcee5ff2011-09-30 22:50:39 -0600214 uint16_t crc;
Jens Axboea64e88d2011-10-03 14:20:01 +0200215 int ret, first = 1;
216 void *pdu = NULL;
Jens Axboe132159a2011-09-30 15:01:32 -0600217
Jens Axboea64e88d2011-10-03 14:20:01 +0200218 do {
219 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
220 if (ret)
221 break;
Jens Axboe132159a2011-09-30 15:01:32 -0600222
Jens Axboea64e88d2011-10-03 14:20:01 +0200223 /* We have a command, verify it and swap if need be */
224 ret = verify_convert_cmd(&cmd);
225 if (ret)
226 break;
Jens Axboe132159a2011-09-30 15:01:32 -0600227
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200228 if (first) {
229 /* if this is text, add room for \0 at the end */
230 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
231 assert(!cmdret);
232 } else
Jens Axboea64e88d2011-10-03 14:20:01 +0200233 cmd_size += cmd.pdu_len;
Jens Axboe132159a2011-09-30 15:01:32 -0600234
Jens Axboea64e88d2011-10-03 14:20:01 +0200235 cmdret = realloc(cmdret, cmd_size);
Jens Axboe132159a2011-09-30 15:01:32 -0600236
Jens Axboea64e88d2011-10-03 14:20:01 +0200237 if (first)
238 memcpy(cmdret, &cmd, sizeof(cmd));
Jens Axboe67f15dc2011-10-15 16:07:40 +0200239 else if (cmdret->opcode != cmd.opcode) {
240 log_err("fio: fragment opcode mismatch (%d != %d)\n",
241 cmdret->opcode, cmd.opcode);
242 ret = 1;
243 break;
244 }
Jens Axboea64e88d2011-10-03 14:20:01 +0200245
246 if (!cmd.pdu_len)
247 break;
248
249 /* There's payload, get it */
250 pdu = (void *) cmdret->payload + pdu_offset;
251 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
252 if (ret)
253 break;
254
255 /* Verify payload crc */
Jens Axboe25dfa842012-02-29 10:01:34 +0100256 crc = fio_crc16(pdu, cmd.pdu_len);
Jens Axboea64e88d2011-10-03 14:20:01 +0200257 if (crc != cmd.pdu_crc16) {
258 log_err("fio: server bad crc on payload ");
259 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
260 ret = 1;
261 break;
262 }
263
264 pdu_offset += cmd.pdu_len;
Jens Axboe817f06b2011-10-03 15:03:08 +0200265 if (!first)
266 cmdret->pdu_len += cmd.pdu_len;
Jens Axboea64e88d2011-10-03 14:20:01 +0200267 first = 0;
268 } while (cmd.flags & FIO_NET_CMD_F_MORE);
269
270 if (ret) {
271 free(cmdret);
272 cmdret = NULL;
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200273 } else if (cmdret) {
274 /* zero-terminate text input */
Jens Axboe084d1c62012-03-03 20:28:07 +0100275 if (cmdret->pdu_len) {
276 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
277 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
278 char *buf = (char *) pdu->buf;
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200279
Jens Axboe3c3ed072012-03-27 09:12:39 +0200280 buf[pdu->buf_len] = '\0';
Jens Axboe084d1c62012-03-03 20:28:07 +0100281 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
Jens Axboe46bcd492012-03-14 11:31:21 +0100282 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
283 char *buf = (char *) pdu->buf;
284 int len = le32_to_cpu(pdu->buf_len);
Jens Axboe084d1c62012-03-03 20:28:07 +0100285
Jens Axboe46bcd492012-03-14 11:31:21 +0100286 buf[len] = '\0';
Jens Axboe084d1c62012-03-03 20:28:07 +0100287 }
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200288 }
Jens Axboe084d1c62012-03-03 20:28:07 +0100289
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200290 /* frag flag is internal */
Jens Axboea64e88d2011-10-03 14:20:01 +0200291 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200292 }
Jens Axboe132159a2011-09-30 15:01:32 -0600293
Jens Axboea64e88d2011-10-03 14:20:01 +0200294 return cmdret;
Jens Axboe132159a2011-09-30 15:01:32 -0600295}
296
Jens Axboe40c60512012-03-27 16:03:04 +0200297static void add_reply(uint64_t tag, struct flist_head *list)
298{
Aaron Carrolla572bbf2013-04-12 07:55:02 +0200299 struct fio_net_cmd_reply *reply;
Jens Axboe40c60512012-03-27 16:03:04 +0200300
Aaron Carrolla572bbf2013-04-12 07:55:02 +0200301 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
Jens Axboe40c60512012-03-27 16:03:04 +0200302 flist_add_tail(&reply->list, list);
303}
304
305static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
306{
307 struct fio_net_cmd_reply *reply;
308
309 reply = calloc(1, sizeof(*reply));
310 INIT_FLIST_HEAD(&reply->list);
311 gettimeofday(&reply->tv, NULL);
312 reply->saved_tag = tag;
313 reply->opcode = opcode;
314
315 return (uintptr_t) reply;
316}
317
318static void free_reply(uint64_t tag)
319{
Aaron Carrolla572bbf2013-04-12 07:55:02 +0200320 struct fio_net_cmd_reply *reply;
Jens Axboe40c60512012-03-27 16:03:04 +0200321
Aaron Carrolla572bbf2013-04-12 07:55:02 +0200322 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
Jens Axboe40c60512012-03-27 16:03:04 +0200323 free(reply);
324}
325
Jens Axboe53bd8db2012-03-14 21:51:38 +0100326void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
Jens Axboe132159a2011-09-30 15:01:32 -0600327{
328 uint32_t pdu_len;
329
Jens Axboe25dfa842012-02-29 10:01:34 +0100330 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
Jens Axboe132159a2011-09-30 15:01:32 -0600331
332 pdu_len = le32_to_cpu(cmd->pdu_len);
Jens Axboe1b427252012-03-14 15:03:03 +0100333 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
334}
335
336void fio_net_cmd_crc(struct fio_net_cmd *cmd)
337{
338 fio_net_cmd_crc_pdu(cmd, cmd->payload);
Jens Axboe132159a2011-09-30 15:01:32 -0600339}
340
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200341int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
Jens Axboe40c60512012-03-27 16:03:04 +0200342 uint64_t *tagptr, struct flist_head *list)
Jens Axboe794d69c2011-10-01 08:48:50 -0600343{
Jens Axboe7f868312011-10-10 09:55:21 +0200344 struct fio_net_cmd *cmd = NULL;
345 size_t this_len, cur_len = 0;
Jens Axboe40c60512012-03-27 16:03:04 +0200346 uint64_t tag;
Jens Axboe794d69c2011-10-01 08:48:50 -0600347 int ret;
348
Jens Axboe40c60512012-03-27 16:03:04 +0200349 if (list) {
350 assert(tagptr);
351 tag = *tagptr = alloc_reply(*tagptr, opcode);
352 } else
353 tag = tagptr ? *tagptr : 0;
354
Jens Axboe794d69c2011-10-01 08:48:50 -0600355 do {
356 this_len = size;
Jens Axboeb9d2f302012-03-08 20:36:28 +0100357 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
358 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
Jens Axboe794d69c2011-10-01 08:48:50 -0600359
Jens Axboe7f868312011-10-10 09:55:21 +0200360 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
361 if (cmd)
362 free(cmd);
363
364 cur_len = sizeof(*cmd) + this_len;
365 cmd = malloc(cur_len);
366 }
Jens Axboe794d69c2011-10-01 08:48:50 -0600367
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200368 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
Jens Axboe794d69c2011-10-01 08:48:50 -0600369
370 if (this_len < size)
Jens Axboeddcc0b62011-10-03 14:45:27 +0200371 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
Jens Axboe794d69c2011-10-01 08:48:50 -0600372
373 fio_net_cmd_crc(cmd);
374
375 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
Jens Axboe794d69c2011-10-01 08:48:50 -0600376 size -= this_len;
377 buf += this_len;
378 } while (!ret && size);
379
Jens Axboe40c60512012-03-27 16:03:04 +0200380 if (list) {
381 if (ret)
382 free_reply(tag);
383 else
384 add_reply(tag, list);
385 }
386
Jens Axboe7f868312011-10-10 09:55:21 +0200387 if (cmd)
388 free(cmd);
389
Jens Axboe794d69c2011-10-01 08:48:50 -0600390 return ret;
391}
392
Jens Axboe89c17072011-10-11 10:15:51 +0200393static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
Jens Axboe132159a2011-09-30 15:01:32 -0600394{
Jens Axboe178cde92011-10-05 22:14:31 +0200395 struct fio_net_cmd cmd;
Jens Axboe132159a2011-09-30 15:01:32 -0600396
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200397 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
Jens Axboe132159a2011-09-30 15:01:32 -0600398 fio_net_cmd_crc(&cmd);
399
400 return fio_send_data(sk, &cmd, sizeof(cmd));
401}
402
Jens Axboe89c17072011-10-11 10:15:51 +0200403/*
404 * If 'list' is non-NULL, then allocate and store the sent command for
405 * later verification.
406 */
407int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
408 struct flist_head *list)
409{
Jens Axboe89c17072011-10-11 10:15:51 +0200410 int ret;
411
Jens Axboe40c60512012-03-27 16:03:04 +0200412 if (list)
413 tag = alloc_reply(tag, opcode);
Jens Axboe89c17072011-10-11 10:15:51 +0200414
Jens Axboe40c60512012-03-27 16:03:04 +0200415 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
Jens Axboe89c17072011-10-11 10:15:51 +0200416 if (ret) {
Jens Axboe40c60512012-03-27 16:03:04 +0200417 if (list)
418 free_reply(tag);
419
Jens Axboe89c17072011-10-11 10:15:51 +0200420 return ret;
421 }
422
Jens Axboe40c60512012-03-27 16:03:04 +0200423 if (list)
424 add_reply(tag, list);
425
Jens Axboe89c17072011-10-11 10:15:51 +0200426 return 0;
427}
428
Jens Axboe122c7722012-03-19 09:13:15 +0100429int fio_net_send_quit(int sk)
Jens Axboe437377e2011-10-01 08:31:30 -0600430{
Jens Axboe46c48f12011-10-01 12:50:51 -0600431 dprint(FD_NET, "server: sending quit\n");
Jens Axboe122c7722012-03-19 09:13:15 +0100432
Jens Axboe8c953072012-03-20 14:35:35 +0100433 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
Jens Axboe437377e2011-10-01 08:31:30 -0600434}
435
Jens Axboef58bd2a2012-03-27 10:06:42 +0200436static int fio_net_send_ack(int sk, struct fio_net_cmd *cmd, int error,
437 int signal)
Jens Axboe122c7722012-03-19 09:13:15 +0100438{
439 struct cmd_end_pdu epdu;
Jens Axboef58bd2a2012-03-27 10:06:42 +0200440 uint64_t tag = 0;
Jens Axboe122c7722012-03-19 09:13:15 +0100441
Jens Axboef58bd2a2012-03-27 10:06:42 +0200442 if (cmd)
443 tag = cmd->tag;
Jens Axboe122c7722012-03-19 09:13:15 +0100444
445 epdu.error = __cpu_to_le32(error);
446 epdu.signal = __cpu_to_le32(signal);
Jens Axboe40c60512012-03-27 16:03:04 +0200447 return fio_net_send_cmd(sk, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, NULL);
Jens Axboef58bd2a2012-03-27 10:06:42 +0200448}
449
450int fio_net_send_stop(int sk, int error, int signal)
451{
452 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
453 return fio_net_send_ack(sk, NULL, error, signal);
Jens Axboe122c7722012-03-19 09:13:15 +0100454}
455
456static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
457{
458 struct fio_fork_item *ffi;
459
460 ffi = malloc(sizeof(*ffi));
461 ffi->exitval = 0;
462 ffi->signal = 0;
463 ffi->exited = 0;
464 ffi->pid = pid;
465 flist_add_tail(&ffi->list, list);
466}
467
Jens Axboe6348b5d2013-11-07 13:37:09 -0700468static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
Jens Axboe122c7722012-03-19 09:13:15 +0100469{
Jens Axboea7533db2013-11-06 11:19:42 -0700470 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
Jens Axboe6348b5d2013-11-07 13:37:09 -0700471 fio_server_add_fork_item(pid, conn_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100472}
473
Jens Axboe6348b5d2013-11-07 13:37:09 -0700474static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
Jens Axboe122c7722012-03-19 09:13:15 +0100475{
Jens Axboea7533db2013-11-06 11:19:42 -0700476 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
Jens Axboe6348b5d2013-11-07 13:37:09 -0700477 fio_server_add_fork_item(pid, job_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100478}
479
480static void fio_server_check_fork_item(struct fio_fork_item *ffi)
481{
482 int ret, status;
483
484 ret = waitpid(ffi->pid, &status, WNOHANG);
485 if (ret < 0) {
486 if (errno == ECHILD) {
Jens Axboea7533db2013-11-06 11:19:42 -0700487 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
Jens Axboe122c7722012-03-19 09:13:15 +0100488 ffi->exited = 1;
489 } else
490 log_err("fio: waitpid: %s\n", strerror(errno));
491 } else if (ret == ffi->pid) {
492 if (WIFSIGNALED(status)) {
493 ffi->signal = WTERMSIG(status);
494 ffi->exited = 1;
495 }
496 if (WIFEXITED(status)) {
497 if (WEXITSTATUS(status))
498 ffi->exitval = WEXITSTATUS(status);
499 ffi->exited = 1;
500 }
501 }
502}
503
504static void fio_server_fork_item_done(struct fio_fork_item *ffi)
505{
Jens Axboea7533db2013-11-06 11:19:42 -0700506 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
Jens Axboe122c7722012-03-19 09:13:15 +0100507
508 /*
509 * Fold STOP and QUIT...
510 */
511 fio_net_send_stop(server_fd, ffi->exitval, ffi->signal);
512 fio_net_send_quit(server_fd);
513 flist_del(&ffi->list);
514 free(ffi);
515}
516
Jens Axboe54163252012-03-23 12:25:18 +0100517static void fio_server_check_fork_items(struct flist_head *list)
Jens Axboe122c7722012-03-19 09:13:15 +0100518{
519 struct flist_head *entry, *tmp;
520 struct fio_fork_item *ffi;
521
522 flist_for_each_safe(entry, tmp, list) {
523 ffi = flist_entry(entry, struct fio_fork_item, list);
524
525 fio_server_check_fork_item(ffi);
526
527 if (ffi->exited)
528 fio_server_fork_item_done(ffi);
529 }
530}
531
Jens Axboe6348b5d2013-11-07 13:37:09 -0700532static void fio_server_check_jobs(struct flist_head *job_list)
Jens Axboe122c7722012-03-19 09:13:15 +0100533{
Jens Axboe6348b5d2013-11-07 13:37:09 -0700534 fio_server_check_fork_items(job_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100535}
536
Jens Axboe6348b5d2013-11-07 13:37:09 -0700537static void fio_server_check_conns(struct flist_head *conn_list)
Jens Axboe122c7722012-03-19 09:13:15 +0100538{
Jens Axboe6348b5d2013-11-07 13:37:09 -0700539 fio_server_check_fork_items(conn_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100540}
541
Jens Axboe6348b5d2013-11-07 13:37:09 -0700542static int handle_run_cmd(struct flist_head *job_list, struct fio_net_cmd *cmd)
Jens Axboe132159a2011-09-30 15:01:32 -0600543{
Jens Axboe122c7722012-03-19 09:13:15 +0100544 pid_t pid;
Jens Axboea64e88d2011-10-03 14:20:01 +0200545 int ret;
Jens Axboe132159a2011-09-30 15:01:32 -0600546
Jens Axboe122c7722012-03-19 09:13:15 +0100547 set_genesis_time();
548
549 pid = fork();
550 if (pid) {
Jens Axboe6348b5d2013-11-07 13:37:09 -0700551 fio_server_add_job_pid(job_list, pid);
Jens Axboe122c7722012-03-19 09:13:15 +0100552 return 0;
553 }
554
Jens Axboe2e1df072012-02-09 11:15:02 +0100555 ret = fio_backend();
Jens Axboe2bb3f0a2012-03-28 12:22:40 +0200556 free_threads_shm();
Jens Axboe122c7722012-03-19 09:13:15 +0100557 _exit(ret);
Jens Axboe81179ee2011-10-04 12:42:06 +0200558}
559
Jens Axboeb9d2f302012-03-08 20:36:28 +0100560static int handle_job_cmd(struct fio_net_cmd *cmd)
561{
Jens Axboe46bcd492012-03-14 11:31:21 +0100562 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
563 void *buf = pdu->buf;
Jens Axboeb9d2f302012-03-08 20:36:28 +0100564 struct cmd_start_pdu spdu;
565
Jens Axboe46bcd492012-03-14 11:31:21 +0100566 pdu->buf_len = le32_to_cpu(pdu->buf_len);
567 pdu->client_type = le32_to_cpu(pdu->client_type);
568
569 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
Jens Axboe122c7722012-03-19 09:13:15 +0100570 fio_net_send_quit(server_fd);
Jens Axboeb9d2f302012-03-08 20:36:28 +0100571 return -1;
572 }
573
574 spdu.jobs = cpu_to_le32(thread_number);
Jens Axboe108fea72012-11-14 13:09:45 -0700575 spdu.stat_outputs = cpu_to_le32(stat_number);
Jens Axboe40c60512012-03-27 16:03:04 +0200576 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
Jens Axboeb9d2f302012-03-08 20:36:28 +0100577 return 0;
578}
579
Jens Axboe81179ee2011-10-04 12:42:06 +0200580static int handle_jobline_cmd(struct fio_net_cmd *cmd)
581{
Jens Axboefa2ea802011-10-08 21:07:29 +0200582 void *pdu = cmd->payload;
583 struct cmd_single_line_pdu *cslp;
584 struct cmd_line_pdu *clp;
585 unsigned long offset;
Jens Axboeb9d2f302012-03-08 20:36:28 +0100586 struct cmd_start_pdu spdu;
Jens Axboefa2ea802011-10-08 21:07:29 +0200587 char **argv;
Jens Axboeb9d2f302012-03-08 20:36:28 +0100588 int i;
Jens Axboe81179ee2011-10-04 12:42:06 +0200589
Jens Axboefa2ea802011-10-08 21:07:29 +0200590 clp = pdu;
591 clp->lines = le16_to_cpu(clp->lines);
Jens Axboe46bcd492012-03-14 11:31:21 +0100592 clp->client_type = le16_to_cpu(clp->client_type);
Jens Axboefa2ea802011-10-08 21:07:29 +0200593 argv = malloc(clp->lines * sizeof(char *));
594 offset = sizeof(*clp);
Jens Axboe81179ee2011-10-04 12:42:06 +0200595
Jens Axboefa2ea802011-10-08 21:07:29 +0200596 dprint(FD_NET, "server: %d command line args\n", clp->lines);
Jens Axboe39e8e012011-10-04 13:46:08 +0200597
Jens Axboefa2ea802011-10-08 21:07:29 +0200598 for (i = 0; i < clp->lines; i++) {
599 cslp = pdu + offset;
600 argv[i] = (char *) cslp->text;
601
602 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
Jens Axboe39e8e012011-10-04 13:46:08 +0200603 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
604 }
Jens Axboe81179ee2011-10-04 12:42:06 +0200605
Jens Axboe46bcd492012-03-14 11:31:21 +0100606 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
Jens Axboe122c7722012-03-19 09:13:15 +0100607 fio_net_send_quit(server_fd);
Jens Axboefa2ea802011-10-08 21:07:29 +0200608 free(argv);
Jens Axboe81179ee2011-10-04 12:42:06 +0200609 return -1;
Jens Axboee6d1c662011-10-05 20:41:06 +0200610 }
Jens Axboe81179ee2011-10-04 12:42:06 +0200611
Jens Axboefa2ea802011-10-08 21:07:29 +0200612 free(argv);
613
Jens Axboeb9d2f302012-03-08 20:36:28 +0100614 spdu.jobs = cpu_to_le32(thread_number);
Jens Axboe1e5324e2012-11-14 14:25:31 -0700615 spdu.stat_outputs = cpu_to_le32(stat_number);
Jens Axboe40c60512012-03-27 16:03:04 +0200616 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL);
Jens Axboeb9d2f302012-03-08 20:36:28 +0100617 return 0;
Jens Axboe132159a2011-09-30 15:01:32 -0600618}
619
Jens Axboec28e8e82011-10-04 08:57:39 +0200620static int handle_probe_cmd(struct fio_net_cmd *cmd)
621{
Jens Axboe3989b142013-04-12 13:13:24 +0200622 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
623 struct cmd_probe_reply_pdu probe;
Jens Axboe40c60512012-03-27 16:03:04 +0200624 uint64_t tag = cmd->tag;
Jens Axboec28e8e82011-10-04 08:57:39 +0200625
Jens Axboe89c17072011-10-11 10:15:51 +0200626 dprint(FD_NET, "server: sending probe reply\n");
627
Jens Axboec28e8e82011-10-04 08:57:39 +0200628 memset(&probe, 0, sizeof(probe));
629 gethostname((char *) probe.hostname, sizeof(probe.hostname));
Jens Axboe0dcebdf2013-01-23 15:42:16 -0700630#ifdef CONFIG_BIG_ENDIAN
Jens Axboe6eb24792011-10-04 15:00:30 +0200631 probe.bigendian = 1;
632#endif
Jens Axboe750db472012-04-16 11:44:48 +0200633 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
Jens Axboec28e8e82011-10-04 08:57:39 +0200634
Jens Axboecca84642011-10-07 12:47:57 +0200635 probe.os = FIO_OS;
636 probe.arch = FIO_ARCH;
Jens Axboe38fdef22011-10-11 14:30:06 +0200637 probe.bpp = sizeof(void *);
Jens Axboed31e26d2012-03-28 21:38:24 +0200638 probe.cpus = __cpu_to_le32(cpus_online());
Jens Axboe3989b142013-04-12 13:13:24 +0200639
640 /*
641 * If the client supports compression and we do too, then enable it
642 */
643 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
644 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
645 use_zlib = 1;
646 } else {
647 probe.flags = 0;
648 use_zlib = 0;
649 }
Jens Axboe38fdef22011-10-11 14:30:06 +0200650
Jens Axboe40c60512012-03-27 16:03:04 +0200651 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200652}
653
654static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
655{
656 struct jobs_eta *je;
657 size_t size;
Jens Axboe40c60512012-03-27 16:03:04 +0200658 uint64_t tag = cmd->tag;
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200659 int i;
660
Jens Axboeb814fb22011-10-12 09:20:34 +0200661 if (!thread_number)
662 return 0;
663
664 size = sizeof(*je) + thread_number * sizeof(char) + 1;
Jens Axboe7f868312011-10-10 09:55:21 +0200665 je = malloc(size);
666 memset(je, 0, size);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200667
668 if (!calc_thread_status(je, 1)) {
669 free(je);
670 return 0;
671 }
672
673 dprint(FD_NET, "server sending status\n");
674
675 je->nr_running = cpu_to_le32(je->nr_running);
676 je->nr_ramp = cpu_to_le32(je->nr_ramp);
677 je->nr_pending = cpu_to_le32(je->nr_pending);
Jens Axboe714e85f2013-04-15 10:21:56 +0200678 je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200679 je->files_open = cpu_to_le32(je->files_open);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200680
Jens Axboe298921d2012-09-24 18:47:01 +0200681 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
Jens Axboe3e47bd22012-02-29 13:45:02 +0100682 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
683 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
684 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
685 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
Jens Axboe16725bb2013-04-11 12:43:05 +0200686 je->rate[i] = cpu_to_le32(je->rate[i]);
687 je->iops[i] = cpu_to_le32(je->iops[i]);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200688 }
689
Jens Axboec1970b92012-03-06 15:37:40 +0100690 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200691 je->eta_sec = cpu_to_le64(je->eta_sec);
Jens Axboe8c621fb2012-03-08 12:30:48 +0100692 je->nr_threads = cpu_to_le32(je->nr_threads);
Jens Axboeb7f05eb2012-05-11 20:33:02 +0200693 je->is_pow2 = cpu_to_le32(je->is_pow2);
Jens Axboeed2c0a12013-04-11 12:55:16 +0200694 je->unit_base = cpu_to_le32(je->unit_base);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200695
Jens Axboe40c60512012-03-27 16:03:04 +0200696 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, &tag, NULL);
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200697 free(je);
698 return 0;
Jens Axboec28e8e82011-10-04 08:57:39 +0200699}
700
Jens Axboe40c60512012-03-27 16:03:04 +0200701static int send_update_job_reply(int fd, uint64_t __tag, int error)
702{
703 uint64_t tag = __tag;
704 uint32_t pdu_error;
705
706 pdu_error = __cpu_to_le32(error);
707 return fio_net_send_cmd(fd, FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, NULL);
708}
709
Jens Axboef58bd2a2012-03-27 10:06:42 +0200710static int handle_update_job_cmd(struct fio_net_cmd *cmd)
711{
712 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
713 struct thread_data *td;
714 uint32_t tnumber;
715
716 tnumber = le32_to_cpu(pdu->thread_number);
717
718 dprint(FD_NET, "server: updating options for job %u\n", tnumber);
719
Jens Axboe30ffacb2012-03-28 09:15:05 +0200720 if (!tnumber || tnumber > thread_number) {
Jens Axboe40c60512012-03-27 16:03:04 +0200721 send_update_job_reply(server_fd, cmd->tag, ENODEV);
Jens Axboef58bd2a2012-03-27 10:06:42 +0200722 return 0;
723 }
724
Jens Axboe30ffacb2012-03-28 09:15:05 +0200725 td = &threads[tnumber - 1];
Jens Axboef58bd2a2012-03-27 10:06:42 +0200726 convert_thread_options_to_cpu(&td->o, &pdu->top);
Jens Axboe40c60512012-03-27 16:03:04 +0200727 send_update_job_reply(server_fd, cmd->tag, 0);
Jens Axboef58bd2a2012-03-27 10:06:42 +0200728 return 0;
729}
730
Jens Axboe6348b5d2013-11-07 13:37:09 -0700731static int handle_command(struct flist_head *job_list, struct fio_net_cmd *cmd)
Jens Axboe132159a2011-09-30 15:01:32 -0600732{
733 int ret;
734
Jens Axboe4b91ee82013-02-25 10:18:33 +0100735 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
736 fio_server_op(cmd->opcode), cmd->pdu_len,
737 (unsigned long long) cmd->tag);
Jens Axboe46c48f12011-10-01 12:50:51 -0600738
Jens Axboe132159a2011-09-30 15:01:32 -0600739 switch (cmd->opcode) {
740 case FIO_NET_CMD_QUIT:
Jens Axboecc0df002011-10-03 20:53:32 +0200741 fio_terminate_threads(TERMINATE_ALL);
Jens Axboec28e8e82011-10-04 08:57:39 +0200742 return -1;
Jens Axboed7959182011-10-03 11:48:39 +0200743 case FIO_NET_CMD_EXIT:
Jens Axboe132159a2011-09-30 15:01:32 -0600744 exit_backend = 1;
Jens Axboec28e8e82011-10-04 08:57:39 +0200745 return -1;
Jens Axboe132159a2011-09-30 15:01:32 -0600746 case FIO_NET_CMD_JOB:
Jens Axboe0b8f30a2011-10-04 10:31:53 +0200747 ret = handle_job_cmd(cmd);
Jens Axboe132159a2011-09-30 15:01:32 -0600748 break;
Jens Axboe81179ee2011-10-04 12:42:06 +0200749 case FIO_NET_CMD_JOBLINE:
750 ret = handle_jobline_cmd(cmd);
751 break;
Jens Axboec28e8e82011-10-04 08:57:39 +0200752 case FIO_NET_CMD_PROBE:
753 ret = handle_probe_cmd(cmd);
754 break;
Jens Axboeaf9c9fb2011-10-09 21:54:10 +0200755 case FIO_NET_CMD_SEND_ETA:
756 ret = handle_send_eta_cmd(cmd);
757 break;
Jens Axboeb9d2f302012-03-08 20:36:28 +0100758 case FIO_NET_CMD_RUN:
Jens Axboe6348b5d2013-11-07 13:37:09 -0700759 ret = handle_run_cmd(job_list, cmd);
Jens Axboeb9d2f302012-03-08 20:36:28 +0100760 break;
Jens Axboef58bd2a2012-03-27 10:06:42 +0200761 case FIO_NET_CMD_UPDATE_JOB:
762 ret = handle_update_job_cmd(cmd);
763 break;
Jens Axboe132159a2011-09-30 15:01:32 -0600764 default:
Jens Axboe3c3ed072012-03-27 09:12:39 +0200765 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
Jens Axboe132159a2011-09-30 15:01:32 -0600766 ret = 1;
767 }
768
769 return ret;
770}
771
Jens Axboe122c7722012-03-19 09:13:15 +0100772static int handle_connection(int sk)
Jens Axboe132159a2011-09-30 15:01:32 -0600773{
774 struct fio_net_cmd *cmd = NULL;
Jens Axboe6348b5d2013-11-07 13:37:09 -0700775 FLIST_HEAD(job_list);
Jens Axboe132159a2011-09-30 15:01:32 -0600776 int ret = 0;
777
Jens Axboe122c7722012-03-19 09:13:15 +0100778 reset_fio_state();
Jens Axboe122c7722012-03-19 09:13:15 +0100779 server_fd = sk;
780
Jens Axboe132159a2011-09-30 15:01:32 -0600781 /* read forever */
782 while (!exit_backend) {
Jens Axboee951bdc2011-10-05 21:58:45 +0200783 struct pollfd pfd = {
784 .fd = sk,
785 .events = POLLIN,
786 };
787
788 ret = 0;
789 do {
Jens Axboe54163252012-03-23 12:25:18 +0100790 int timeout = 1000;
791
792 if (!flist_empty(&job_list))
793 timeout = 100;
Jens Axboe3c3ed072012-03-27 09:12:39 +0200794
Jens Axboe54163252012-03-23 12:25:18 +0100795 ret = poll(&pfd, 1, timeout);
Jens Axboee951bdc2011-10-05 21:58:45 +0200796 if (ret < 0) {
797 if (errno == EINTR)
798 break;
799 log_err("fio: poll: %s\n", strerror(errno));
800 break;
Jens Axboe19c65172011-10-05 22:05:37 +0200801 } else if (!ret) {
Jens Axboe6348b5d2013-11-07 13:37:09 -0700802 fio_server_check_jobs(&job_list);
Jens Axboee951bdc2011-10-05 21:58:45 +0200803 continue;
Jens Axboe19c65172011-10-05 22:05:37 +0200804 }
Jens Axboee951bdc2011-10-05 21:58:45 +0200805
806 if (pfd.revents & POLLIN)
807 break;
808 if (pfd.revents & (POLLERR|POLLHUP)) {
809 ret = 1;
810 break;
811 }
Jens Axboe19c65172011-10-05 22:05:37 +0200812 } while (!exit_backend);
Jens Axboee951bdc2011-10-05 21:58:45 +0200813
Jens Axboe6348b5d2013-11-07 13:37:09 -0700814 fio_server_check_jobs(&job_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100815
Jens Axboee951bdc2011-10-05 21:58:45 +0200816 if (ret < 0)
817 break;
818
819 cmd = fio_net_recv_cmd(sk);
Jens Axboe132159a2011-09-30 15:01:32 -0600820 if (!cmd) {
Jens Axboec28e8e82011-10-04 08:57:39 +0200821 ret = -1;
Jens Axboe132159a2011-09-30 15:01:32 -0600822 break;
823 }
824
Jens Axboe6348b5d2013-11-07 13:37:09 -0700825 ret = handle_command(&job_list, cmd);
Jens Axboe132159a2011-09-30 15:01:32 -0600826 if (ret)
827 break;
828
829 free(cmd);
Jens Axboec77a99e2011-10-01 16:26:42 -0400830 cmd = NULL;
Jens Axboe132159a2011-09-30 15:01:32 -0600831 }
832
833 if (cmd)
834 free(cmd);
835
Jens Axboe122c7722012-03-19 09:13:15 +0100836 close(sk);
837 _exit(ret);
Jens Axboecc0df002011-10-03 20:53:32 +0200838}
839
Jens Axboe50d16972011-09-29 17:45:28 -0600840static int accept_loop(int listen_sk)
841{
Jens Axboebb447a22011-10-04 15:06:42 +0200842 struct sockaddr_in addr;
Jens Axboe479471c2014-01-23 20:42:06 -0800843 struct sockaddr_in6 addr6;
844 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
Jens Axboe009b1be2011-09-29 18:27:02 -0600845 struct pollfd pfd;
Jens Axboe122c7722012-03-19 09:13:15 +0100846 int ret = 0, sk, flags, exitval = 0;
Jens Axboe6348b5d2013-11-07 13:37:09 -0700847 FLIST_HEAD(conn_list);
Jens Axboe50d16972011-09-29 17:45:28 -0600848
Jens Axboe60efd142011-10-04 13:30:11 +0200849 dprint(FD_NET, "server enter accept loop\n");
850
Jens Axboe009b1be2011-09-29 18:27:02 -0600851 flags = fcntl(listen_sk, F_GETFL);
852 flags |= O_NONBLOCK;
853 fcntl(listen_sk, F_SETFL, flags);
Jens Axboe122c7722012-03-19 09:13:15 +0100854
855 while (!exit_backend) {
Jens Axboe479471c2014-01-23 20:42:06 -0800856 const char *from;
857 char buf[64];
Jens Axboe122c7722012-03-19 09:13:15 +0100858 pid_t pid;
859
860 pfd.fd = listen_sk;
861 pfd.events = POLLIN;
862 do {
Jens Axboe54163252012-03-23 12:25:18 +0100863 int timeout = 1000;
864
865 if (!flist_empty(&conn_list))
866 timeout = 100;
867
868 ret = poll(&pfd, 1, timeout);
Jens Axboe122c7722012-03-19 09:13:15 +0100869 if (ret < 0) {
870 if (errno == EINTR)
871 break;
872 log_err("fio: poll: %s\n", strerror(errno));
Jens Axboe009b1be2011-09-29 18:27:02 -0600873 break;
Jens Axboe122c7722012-03-19 09:13:15 +0100874 } else if (!ret) {
Jens Axboe6348b5d2013-11-07 13:37:09 -0700875 fio_server_check_conns(&conn_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100876 continue;
877 }
Jens Axboe009b1be2011-09-29 18:27:02 -0600878
Jens Axboe122c7722012-03-19 09:13:15 +0100879 if (pfd.revents & POLLIN)
880 break;
881 } while (!exit_backend);
882
Jens Axboe6348b5d2013-11-07 13:37:09 -0700883 fio_server_check_conns(&conn_list);
Jens Axboe122c7722012-03-19 09:13:15 +0100884
885 if (exit_backend || ret < 0)
Jens Axboe009b1be2011-09-29 18:27:02 -0600886 break;
Jens Axboe009b1be2011-09-29 18:27:02 -0600887
Jens Axboe479471c2014-01-23 20:42:06 -0800888 if (use_ipv6)
889 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
890 else
891 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
892
Jens Axboe122c7722012-03-19 09:13:15 +0100893 if (sk < 0) {
894 log_err("fio: accept: %s\n", strerror(errno));
895 return -1;
896 }
Jens Axboe009b1be2011-09-29 18:27:02 -0600897
Jens Axboe479471c2014-01-23 20:42:06 -0800898 if (use_ipv6)
899 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
900 else
901 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
902
903 dprint(FD_NET, "server: connect from %s\n", from);
Jens Axboe122c7722012-03-19 09:13:15 +0100904
905 pid = fork();
906 if (pid) {
907 close(sk);
Jens Axboe6348b5d2013-11-07 13:37:09 -0700908 fio_server_add_conn_pid(&conn_list, pid);
Jens Axboe122c7722012-03-19 09:13:15 +0100909 continue;
910 }
911
912 /* exits */
913 handle_connection(sk);
Jens Axboe50d16972011-09-29 17:45:28 -0600914 }
915
Jens Axboe132159a2011-09-30 15:01:32 -0600916 return exitval;
Jens Axboe50d16972011-09-29 17:45:28 -0600917}
918
Jens Axboe084d1c62012-03-03 20:28:07 +0100919int fio_server_text_output(int level, const char *buf, size_t len)
Jens Axboe37db14f2011-09-30 17:00:42 -0600920{
Jens Axboe084d1c62012-03-03 20:28:07 +0100921 struct cmd_text_pdu *pdu;
922 unsigned int tlen;
923 struct timeval tv;
Jens Axboe337d75a2011-10-01 12:36:32 -0600924
Jens Axboe084d1c62012-03-03 20:28:07 +0100925 if (server_fd == -1)
926 return log_local_buf(buf, len);
927
928 tlen = sizeof(*pdu) + len;
929 pdu = malloc(tlen);
930
931 pdu->level = __cpu_to_le32(level);
932 pdu->buf_len = __cpu_to_le32(len);
933
934 gettimeofday(&tv, NULL);
935 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
936 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
937
938 memcpy(pdu->buf, buf, len);
939
Jens Axboe40c60512012-03-27 16:03:04 +0200940 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, NULL, NULL);
Jens Axboe084d1c62012-03-03 20:28:07 +0100941 free(pdu);
942 return len;
Jens Axboe142575e2011-09-30 17:35:45 -0600943}
944
Jens Axboea64e88d2011-10-03 14:20:01 +0200945static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
946{
947 dst->max_val = cpu_to_le64(src->max_val);
948 dst->min_val = cpu_to_le64(src->min_val);
949 dst->samples = cpu_to_le64(src->samples);
Jens Axboe802ad4a2011-10-05 09:51:58 +0200950
951 /*
952 * Encode to IEEE 754 for network transfer
953 */
954 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
955 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
Jens Axboea64e88d2011-10-03 14:20:01 +0200956}
957
958static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
959{
960 int i;
961
Jens Axboe298921d2012-09-24 18:47:01 +0200962 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
Jens Axboea64e88d2011-10-03 14:20:01 +0200963 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
964 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
965 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
966 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
967 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
968 dst->agg[i] = cpu_to_le64(src->agg[i]);
969 }
970
971 dst->kb_base = cpu_to_le32(src->kb_base);
Steven Noonanad705bc2013-04-08 15:05:25 -0700972 dst->unit_base = cpu_to_le32(src->unit_base);
Jens Axboea64e88d2011-10-03 14:20:01 +0200973 dst->groupid = cpu_to_le32(src->groupid);
Jens Axboe771e58b2013-01-30 12:56:23 +0100974 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
Jens Axboea64e88d2011-10-03 14:20:01 +0200975}
976
977/*
978 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
979 * into a single payload.
980 */
981void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
982{
983 struct cmd_ts_pdu p;
984 int i, j;
985
Jens Axboe60efd142011-10-04 13:30:11 +0200986 dprint(FD_NET, "server sending end stats\n");
987
Jens Axboe317b3c82011-10-03 21:47:27 +0200988 memset(&p, 0, sizeof(p));
989
Jens Axboea64e88d2011-10-03 14:20:01 +0200990 strcpy(p.ts.name, ts->name);
991 strcpy(p.ts.verror, ts->verror);
992 strcpy(p.ts.description, ts->description);
993
Jens Axboe2f122b12012-03-15 13:10:19 +0100994 p.ts.error = cpu_to_le32(ts->error);
995 p.ts.thread_number = cpu_to_le32(ts->thread_number);
996 p.ts.groupid = cpu_to_le32(ts->groupid);
997 p.ts.pid = cpu_to_le32(ts->pid);
998 p.ts.members = cpu_to_le32(ts->members);
Jens Axboe771e58b2013-01-30 12:56:23 +0100999 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
Jens Axboea64e88d2011-10-03 14:20:01 +02001000
Jens Axboe298921d2012-09-24 18:47:01 +02001001 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
Jens Axboea64e88d2011-10-03 14:20:01 +02001002 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
1003 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
1004 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
1005 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
1006 }
1007
1008 p.ts.usr_time = cpu_to_le64(ts->usr_time);
1009 p.ts.sys_time = cpu_to_le64(ts->sys_time);
1010 p.ts.ctx = cpu_to_le64(ts->ctx);
1011 p.ts.minf = cpu_to_le64(ts->minf);
1012 p.ts.majf = cpu_to_le64(ts->majf);
1013 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
Jens Axboe802ad4a2011-10-05 09:51:58 +02001014
1015 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
Jens Axboecfc03e42011-10-12 21:20:42 +02001016 fio_fp64_t *src = &ts->percentile_list[i];
1017 fio_fp64_t *dst = &p.ts.percentile_list[i];
Jens Axboe802ad4a2011-10-05 09:51:58 +02001018
Jens Axboecfc03e42011-10-12 21:20:42 +02001019 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
Jens Axboe802ad4a2011-10-05 09:51:58 +02001020 }
Jens Axboea64e88d2011-10-03 14:20:01 +02001021
1022 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
1023 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
1024 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
1025 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
1026 }
1027
1028 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
1029 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
1030 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
1031 }
1032
Jens Axboe298921d2012-09-24 18:47:01 +02001033 for (i = 0; i < DDIR_RWDIR_CNT; i++)
Jens Axboea64e88d2011-10-03 14:20:01 +02001034 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
1035 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
1036
Jens Axboe78799de2013-01-29 20:53:52 +01001037 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
Jens Axboea64e88d2011-10-03 14:20:01 +02001038 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
Jens Axboe93eee042011-10-03 21:08:48 +02001039 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
Jens Axboea64e88d2011-10-03 14:20:01 +02001040 }
1041
Jens Axboe93eee042011-10-03 21:08:48 +02001042 p.ts.total_submit = cpu_to_le64(ts->total_submit);
Jens Axboea64e88d2011-10-03 14:20:01 +02001043 p.ts.total_complete = cpu_to_le64(ts->total_complete);
1044
Jens Axboe298921d2012-09-24 18:47:01 +02001045 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
Jens Axboea64e88d2011-10-03 14:20:01 +02001046 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
1047 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
1048 }
1049
1050 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
1051 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
1052 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
Jens Axboeddcc0b62011-10-03 14:45:27 +02001053 p.ts.first_error = cpu_to_le32(ts->first_error);
1054 p.ts.kb_base = cpu_to_le32(ts->kb_base);
Steven Noonanad705bc2013-04-08 15:05:25 -07001055 p.ts.unit_base = cpu_to_le32(ts->unit_base);
Jens Axboea64e88d2011-10-03 14:20:01 +02001056
Jens Axboe3e260a42013-12-09 12:38:53 -07001057 p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
1058 p.ts.latency_target = cpu_to_le64(ts->latency_target);
1059 p.ts.latency_window = cpu_to_le64(ts->latency_window);
1060 p.ts.latency_percentile.u.i = __cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
1061
Jens Axboea64e88d2011-10-03 14:20:01 +02001062 convert_gs(&p.rs, rs);
1063
Jens Axboe40c60512012-03-27 16:03:04 +02001064 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), NULL, NULL);
Jens Axboea64e88d2011-10-03 14:20:01 +02001065}
1066
1067void fio_server_send_gs(struct group_run_stats *rs)
1068{
1069 struct group_run_stats gs;
1070
Jens Axboe60efd142011-10-04 13:30:11 +02001071 dprint(FD_NET, "server sending group run stats\n");
1072
Jens Axboea64e88d2011-10-03 14:20:01 +02001073 convert_gs(&gs, rs);
Jens Axboe40c60512012-03-27 16:03:04 +02001074 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, NULL);
Jens Axboecf451d12011-10-03 16:48:30 +02001075}
1076
Jens Axboed09a64a2011-10-13 11:38:56 +02001077static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
1078{
1079 int i;
1080
1081 for (i = 0; i < 2; i++) {
1082 dst->ios[i] = cpu_to_le32(src->ios[i]);
1083 dst->merges[i] = cpu_to_le32(src->merges[i]);
1084 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1085 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
1086 }
1087
1088 dst->io_ticks = cpu_to_le32(src->io_ticks);
1089 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
1090 dst->slavecount = cpu_to_le32(src->slavecount);
1091 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
1092}
1093
1094static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
1095{
1096 int i;
1097
1098 strcpy((char *) dst->name, (char *) src->name);
1099
1100 for (i = 0; i < 2; i++) {
1101 dst->ios[i] = cpu_to_le32(src->ios[i]);
1102 dst->merges[i] = cpu_to_le32(src->merges[i]);
1103 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
1104 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
1105 }
1106
1107 dst->io_ticks = cpu_to_le32(src->io_ticks);
1108 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
1109 dst->msec = cpu_to_le64(src->msec);
1110}
1111
1112void fio_server_send_du(void)
1113{
1114 struct disk_util *du;
1115 struct flist_head *entry;
1116 struct cmd_du_pdu pdu;
1117
1118 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
1119
Jens Axboe0766d922011-10-13 12:02:08 +02001120 memset(&pdu, 0, sizeof(pdu));
1121
Jens Axboed09a64a2011-10-13 11:38:56 +02001122 flist_for_each(entry, &disk_list) {
1123 du = flist_entry(entry, struct disk_util, list);
1124
1125 convert_dus(&pdu.dus, &du->dus);
1126 convert_agg(&pdu.agg, &du->agg);
1127
Jens Axboe40c60512012-03-27 16:03:04 +02001128 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, NULL);
Jens Axboed09a64a2011-10-13 11:38:56 +02001129 }
1130}
1131
Jens Axboe53bd8db2012-03-14 21:51:38 +01001132/*
1133 * Send a command with a separate PDU, not inlined in the command
1134 */
1135static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
1136 off_t size, uint64_t tag, uint32_t flags)
1137{
1138 struct fio_net_cmd cmd;
1139 struct iovec iov[2];
1140
1141 iov[0].iov_base = &cmd;
1142 iov[0].iov_len = sizeof(cmd);
1143 iov[1].iov_base = (void *) buf;
1144 iov[1].iov_len = size;
1145
1146 __fio_init_net_cmd(&cmd, opcode, size, tag);
1147 cmd.flags = __cpu_to_le32(flags);
1148 fio_net_cmd_crc_pdu(&cmd, buf);
1149
Jens Axboe8c953072012-03-20 14:35:35 +01001150 return fio_sendv_data(sk, iov, 2);
Jens Axboe53bd8db2012-03-14 21:51:38 +01001151}
1152
Jens Axboe3989b142013-04-12 13:13:24 +02001153static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log)
Jens Axboe1b427252012-03-14 15:03:03 +01001154{
Jens Axboe3989b142013-04-12 13:13:24 +02001155 int ret = 0;
1156#ifdef CONFIG_ZLIB
Jens Axboe1b427252012-03-14 15:03:03 +01001157 z_stream stream;
1158 void *out_pdu;
Jens Axboe1b427252012-03-14 15:03:03 +01001159
1160 /*
1161 * Dirty - since the log is potentially huge, compress it into
1162 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
1163 * side defragment it.
1164 */
1165 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
1166
1167 stream.zalloc = Z_NULL;
1168 stream.zfree = Z_NULL;
1169 stream.opaque = Z_NULL;
1170
1171 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) {
Jens Axboe53bd8db2012-03-14 21:51:38 +01001172 ret = 1;
1173 goto err;
Jens Axboe1b427252012-03-14 15:03:03 +01001174 }
1175
Jens Axboef5ed7652012-03-14 16:28:07 +01001176 stream.next_in = (void *) log->log;
1177 stream.avail_in = log->nr_samples * sizeof(struct io_sample);
Jens Axboe1b427252012-03-14 15:03:03 +01001178
1179 do {
Jens Axboe53bd8db2012-03-14 21:51:38 +01001180 unsigned int this_len, flags = 0;
1181 int ret;
Jens Axboe1b427252012-03-14 15:03:03 +01001182
1183 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
1184 stream.next_out = out_pdu;
Jens Axboe3c547fe2012-03-14 21:53:00 +01001185 ret = deflate(&stream, Z_FINISH);
1186 /* may be Z_OK, or Z_STREAM_END */
1187 if (ret < 0)
1188 goto err_zlib;
Jens Axboe1b427252012-03-14 15:03:03 +01001189
1190 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
1191
Jens Axboe1b427252012-03-14 15:03:03 +01001192 if (stream.avail_in)
Jens Axboe53bd8db2012-03-14 21:51:38 +01001193 flags = FIO_NET_CMD_F_MORE;
Jens Axboe1b427252012-03-14 15:03:03 +01001194
Jens Axboe53bd8db2012-03-14 21:51:38 +01001195 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG,
1196 out_pdu, this_len, 0, flags);
1197 if (ret)
1198 goto err_zlib;
Jens Axboe1b427252012-03-14 15:03:03 +01001199 } while (stream.avail_in);
1200
Jens Axboe53bd8db2012-03-14 21:51:38 +01001201err_zlib:
Jens Axboe1b427252012-03-14 15:03:03 +01001202 deflateEnd(&stream);
Jens Axboe53bd8db2012-03-14 21:51:38 +01001203err:
1204 free(out_pdu);
Jens Axboe3989b142013-04-12 13:13:24 +02001205#endif
Jens Axboe53bd8db2012-03-14 21:51:38 +01001206 return ret;
Jens Axboe1b427252012-03-14 15:03:03 +01001207}
1208
Jens Axboe3989b142013-04-12 13:13:24 +02001209int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
1210{
1211 struct cmd_iolog_pdu pdu;
1212 int i, ret = 0;
1213
1214 pdu.thread_number = cpu_to_le32(td->thread_number);
1215 pdu.nr_samples = __cpu_to_le32(log->nr_samples);
1216 pdu.log_type = cpu_to_le32(log->log_type);
1217 pdu.compressed = cpu_to_le32(use_zlib);
1218 strcpy((char *) pdu.name, name);
1219
1220 for (i = 0; i < log->nr_samples; i++) {
1221 struct io_sample *s = &log->log[i];
1222
1223 s->time = cpu_to_le64(s->time);
1224 s->val = cpu_to_le64(s->val);
1225 s->ddir = cpu_to_le32(s->ddir);
1226 s->bs = cpu_to_le32(s->bs);
1227 }
1228
1229 /*
1230 * Send header first, it's not compressed.
1231 */
1232 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu,
1233 sizeof(pdu), 0, FIO_NET_CMD_F_MORE);
1234 if (ret)
1235 return ret;
1236
1237 /*
1238 * Now send actual log, compress if we can, otherwise just plain
1239 */
1240 if (use_zlib)
1241 return fio_send_iolog_gz(&pdu, log);
1242
1243 return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log,
1244 log->nr_samples * sizeof(struct io_sample), 0, 0);
1245}
1246
Jens Axboe2f122b12012-03-15 13:10:19 +01001247void fio_server_send_add_job(struct thread_data *td)
Jens Axboe807f9972012-03-02 10:25:24 +01001248{
1249 struct cmd_add_job_pdu pdu;
Jens Axboe807f9972012-03-02 10:25:24 +01001250
Jens Axboe731e30a2012-03-14 16:35:37 +01001251 memset(&pdu, 0, sizeof(pdu));
Jens Axboe2f122b12012-03-15 13:10:19 +01001252 pdu.thread_number = cpu_to_le32(td->thread_number);
1253 pdu.groupid = cpu_to_le32(td->groupid);
1254 convert_thread_options_to_net(&pdu.top, &td->o);
Jens Axboe807f9972012-03-02 10:25:24 +01001255
Jens Axboe40c60512012-03-27 16:03:04 +02001256 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, NULL);
Jens Axboe807f9972012-03-02 10:25:24 +01001257}
1258
Jens Axboe122c7722012-03-19 09:13:15 +01001259void fio_server_send_start(struct thread_data *td)
1260{
1261 assert(server_fd != -1);
1262
1263 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
1264}
1265
Jens Axboe87aa8f12011-10-06 21:24:13 +02001266static int fio_init_server_ip(void)
Jens Axboe81179ee2011-10-04 12:42:06 +02001267{
Jens Axboe811826b2011-10-24 09:11:50 +02001268 struct sockaddr *addr;
Jens Axboe67bf9822013-01-10 11:23:19 +01001269 socklen_t socklen;
Jens Axboe87aa8f12011-10-06 21:24:13 +02001270 int sk, opt;
Jens Axboe81179ee2011-10-04 12:42:06 +02001271
Jens Axboe811826b2011-10-24 09:11:50 +02001272 if (use_ipv6)
1273 sk = socket(AF_INET6, SOCK_STREAM, 0);
1274 else
1275 sk = socket(AF_INET, SOCK_STREAM, 0);
1276
Jens Axboe81179ee2011-10-04 12:42:06 +02001277 if (sk < 0) {
1278 log_err("fio: socket: %s\n", strerror(errno));
1279 return -1;
1280 }
1281
1282 opt = 1;
Jens Axboe1f819912013-01-23 17:21:41 -07001283 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
Jens Axboe81179ee2011-10-04 12:42:06 +02001284 log_err("fio: setsockopt: %s\n", strerror(errno));
Jens Axboeb94cba42011-10-06 21:27:10 +02001285 close(sk);
Jens Axboe81179ee2011-10-04 12:42:06 +02001286 return -1;
1287 }
1288#ifdef SO_REUSEPORT
Jens Axboe6eb24792011-10-04 15:00:30 +02001289 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
Jens Axboe81179ee2011-10-04 12:42:06 +02001290 log_err("fio: setsockopt: %s\n", strerror(errno));
Jens Axboeb94cba42011-10-06 21:27:10 +02001291 close(sk);
Jens Axboe81179ee2011-10-04 12:42:06 +02001292 return -1;
1293 }
1294#endif
1295
Jens Axboe811826b2011-10-24 09:11:50 +02001296 if (use_ipv6) {
1297 addr = (struct sockaddr *) &saddr_in6;
1298 socklen = sizeof(saddr_in6);
1299 saddr_in6.sin6_family = AF_INET6;
1300 } else {
1301 addr = (struct sockaddr *) &saddr_in;
1302 socklen = sizeof(saddr_in);
1303 saddr_in.sin_family = AF_INET;
1304 }
Jens Axboe81179ee2011-10-04 12:42:06 +02001305
Jens Axboe811826b2011-10-24 09:11:50 +02001306 if (bind(sk, addr, socklen) < 0) {
Jens Axboe81179ee2011-10-04 12:42:06 +02001307 log_err("fio: bind: %s\n", strerror(errno));
Jens Axboeb94cba42011-10-06 21:27:10 +02001308 close(sk);
Jens Axboe81179ee2011-10-04 12:42:06 +02001309 return -1;
1310 }
1311
Jens Axboe87aa8f12011-10-06 21:24:13 +02001312 return sk;
1313}
1314
1315static int fio_init_server_sock(void)
1316{
1317 struct sockaddr_un addr;
Jens Axboe67bf9822013-01-10 11:23:19 +01001318 socklen_t len;
Jens Axboe87aa8f12011-10-06 21:24:13 +02001319 mode_t mode;
1320 int sk;
1321
1322 sk = socket(AF_UNIX, SOCK_STREAM, 0);
1323 if (sk < 0) {
1324 log_err("fio: socket: %s\n", strerror(errno));
1325 return -1;
1326 }
1327
1328 mode = umask(000);
1329
1330 memset(&addr, 0, sizeof(addr));
1331 addr.sun_family = AF_UNIX;
1332 strcpy(addr.sun_path, bind_sock);
1333 unlink(bind_sock);
1334
1335 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
1336
1337 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
1338 log_err("fio: bind: %s\n", strerror(errno));
Jens Axboeb94cba42011-10-06 21:27:10 +02001339 close(sk);
Jens Axboe87aa8f12011-10-06 21:24:13 +02001340 return -1;
1341 }
1342
1343 umask(mode);
1344 return sk;
1345}
1346
1347static int fio_init_server_connection(void)
1348{
Jens Axboebebe6392011-10-07 10:00:51 +02001349 char bind_str[128];
Jens Axboe87aa8f12011-10-06 21:24:13 +02001350 int sk;
1351
1352 dprint(FD_NET, "starting server\n");
1353
1354 if (!bind_sock)
1355 sk = fio_init_server_ip();
1356 else
1357 sk = fio_init_server_sock();
1358
1359 if (sk < 0)
1360 return sk;
1361
Jens Axboe811826b2011-10-24 09:11:50 +02001362 if (!bind_sock) {
1363 char *p, port[16];
1364 const void *src;
1365 int af;
1366
1367 if (use_ipv6) {
1368 af = AF_INET6;
1369 src = &saddr_in6.sin6_addr;
1370 } else {
1371 af = AF_INET;
1372 src = &saddr_in.sin_addr;
1373 }
1374
1375 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
1376
1377 sprintf(port, ",%u", fio_net_port);
1378 if (p)
1379 strcat(p, port);
1380 else
1381 strcpy(bind_str, port);
1382 } else
Jens Axboebebe6392011-10-07 10:00:51 +02001383 strcpy(bind_str, bind_sock);
1384
1385 log_info("fio: server listening on %s\n", bind_str);
1386
Jens Axboe89c17072011-10-11 10:15:51 +02001387 if (listen(sk, 0) < 0) {
Jens Axboe81179ee2011-10-04 12:42:06 +02001388 log_err("fio: listen: %s\n", strerror(errno));
1389 return -1;
1390 }
1391
Jens Axboe87aa8f12011-10-06 21:24:13 +02001392 return sk;
1393}
1394
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001395int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
1396 struct in6_addr *inp6)
1397
1398{
1399 int ret = 0;
1400
1401 if (*ipv6)
1402 ret = inet_pton(AF_INET6, host, inp6);
1403 else
1404 ret = inet_pton(AF_INET, host, inp);
1405
1406 if (ret != 1) {
Jens Axboe479471c2014-01-23 20:42:06 -08001407 struct addrinfo hints, *res;
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001408
Jens Axboe479471c2014-01-23 20:42:06 -08001409 memset(&hints, 0, sizeof(hints));
1410 hints.ai_family = *ipv6 ? AF_INET6 : AF_INET;
1411 hints.ai_socktype = SOCK_STREAM;
1412
1413 ret = getaddrinfo(host, NULL, &hints, &res);
1414 if (ret) {
1415 log_err("fio: failed to resolve <%s> (%s)\n", host,
1416 gai_strerror(ret));
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001417 return 0;
1418 }
1419
Jens Axboe479471c2014-01-23 20:42:06 -08001420 if (*ipv6)
1421 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
1422 else
1423 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
1424
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001425 ret = 1;
Jens Axboe479471c2014-01-23 20:42:06 -08001426 freeaddrinfo(res);
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001427 }
1428
1429 return !(ret == 1);
1430}
1431
Jens Axboe660a2bf2011-10-24 09:35:06 +02001432/*
1433 * Parse a host/ip/port string. Reads from 'str'.
1434 *
1435 * Outputs:
1436 *
1437 * For IPv4:
1438 * *ptr is the host, *port is the port, inp is the destination.
1439 * For IPv6:
1440 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1441 * For local domain sockets:
1442 * *ptr is the filename, *is_sock is 1.
1443 */
Jens Axboebebe6392011-10-07 10:00:51 +02001444int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
Jens Axboe811826b2011-10-24 09:11:50 +02001445 int *port, struct in_addr *inp,
1446 struct in6_addr *inp6, int *ipv6)
Jens Axboebebe6392011-10-07 10:00:51 +02001447{
Jens Axboe76867622011-10-25 09:52:51 +02001448 const char *host = str;
1449 char *portp;
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001450 int lport = 0;
Jens Axboe76867622011-10-25 09:52:51 +02001451
Jens Axboebebe6392011-10-07 10:00:51 +02001452 *ptr = NULL;
1453 *is_sock = 0;
Jens Axboe6d2cf392011-10-07 13:19:28 +02001454 *port = fio_net_port;
Jens Axboe811826b2011-10-24 09:11:50 +02001455 *ipv6 = 0;
Jens Axboebebe6392011-10-07 10:00:51 +02001456
1457 if (!strncmp(str, "sock:", 5)) {
1458 *ptr = strdup(str + 5);
1459 *is_sock = 1;
Jens Axboebebe6392011-10-07 10:00:51 +02001460
Jens Axboe76867622011-10-25 09:52:51 +02001461 return 0;
1462 }
1463
1464 /*
1465 * Is it ip:<ip or host>:port
1466 */
1467 if (!strncmp(host, "ip:", 3))
1468 host += 3;
1469 else if (!strncmp(host, "ip4:", 4))
1470 host += 4;
1471 else if (!strncmp(host, "ip6:", 4)) {
1472 host += 4;
1473 *ipv6 = 1;
1474 } else if (host[0] == ':') {
1475 /* String is :port */
1476 host++;
1477 lport = atoi(host);
1478 if (!lport || lport > 65535) {
Jens Axboe4e0a8fa2013-04-15 11:40:57 +02001479 log_err("fio: bad server port %u\n", lport);
Jens Axboe76867622011-10-25 09:52:51 +02001480 return 1;
1481 }
1482 /* no hostname given, we are done */
1483 *port = lport;
1484 return 0;
1485 }
1486
1487 /*
1488 * If no port seen yet, check if there's a last ':' at the end
1489 */
1490 if (!lport) {
1491 portp = strchr(host, ',');
1492 if (portp) {
1493 *portp = '\0';
1494 portp++;
1495 lport = atoi(portp);
Jens Axboebebe6392011-10-07 10:00:51 +02001496 if (!lport || lport > 65535) {
Jens Axboe4e0a8fa2013-04-15 11:40:57 +02001497 log_err("fio: bad server port %u\n", lport);
Jens Axboebebe6392011-10-07 10:00:51 +02001498 return 1;
1499 }
Jens Axboe76867622011-10-25 09:52:51 +02001500 }
1501 }
1502
1503 if (lport)
1504 *port = lport;
1505
1506 if (!strlen(host))
1507 return 0;
1508
1509 *ptr = strdup(host);
1510
Jens Axboe3ec62ec2012-03-01 12:01:29 +01001511 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1512 free(*ptr);
1513 *ptr = NULL;
1514 return 1;
Jens Axboebebe6392011-10-07 10:00:51 +02001515 }
1516
1517 if (*port == 0)
1518 *port = fio_net_port;
1519
1520 return 0;
1521}
1522
Jens Axboe87aa8f12011-10-06 21:24:13 +02001523/*
1524 * Server arg should be one of:
1525 *
1526 * sock:/path/to/socket
1527 * ip:1.2.3.4
1528 * 1.2.3.4
1529 *
1530 * Where sock uses unix domain sockets, and ip binds the server to
1531 * a specific interface. If no arguments are given to the server, it
1532 * uses IP and binds to 0.0.0.0.
1533 *
1534 */
1535static int fio_handle_server_arg(void)
1536{
Jens Axboe6d2cf392011-10-07 13:19:28 +02001537 int port = fio_net_port;
Jens Axboea7de0a12011-10-07 12:55:14 +02001538 int is_sock, ret = 0;
Jens Axboebebe6392011-10-07 10:00:51 +02001539
Jens Axboe87aa8f12011-10-06 21:24:13 +02001540 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1541
1542 if (!fio_server_arg)
Jens Axboea7de0a12011-10-07 12:55:14 +02001543 goto out;
Jens Axboe87aa8f12011-10-06 21:24:13 +02001544
Jens Axboe4e5b8fb2011-10-07 10:03:44 +02001545 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
Jens Axboe811826b2011-10-24 09:11:50 +02001546 &port, &saddr_in.sin_addr,
1547 &saddr_in6.sin6_addr, &use_ipv6);
Jens Axboe4e5b8fb2011-10-07 10:03:44 +02001548
1549 if (!is_sock && bind_sock) {
1550 free(bind_sock);
1551 bind_sock = NULL;
1552 }
1553
Jens Axboea7de0a12011-10-07 12:55:14 +02001554out:
Jens Axboe6d2cf392011-10-07 13:19:28 +02001555 fio_net_port = port;
1556 saddr_in.sin_port = htons(port);
Jens Axboe811826b2011-10-24 09:11:50 +02001557 saddr_in6.sin6_port = htons(port);
Jens Axboe4e5b8fb2011-10-07 10:03:44 +02001558 return ret;
Jens Axboe87aa8f12011-10-06 21:24:13 +02001559}
1560
1561static int fio_server(void)
1562{
1563 int sk, ret;
1564
1565 dprint(FD_NET, "starting server\n");
1566
1567 if (fio_handle_server_arg())
1568 return -1;
1569
1570 sk = fio_init_server_connection();
1571 if (sk < 0)
1572 return -1;
Jens Axboe81179ee2011-10-04 12:42:06 +02001573
1574 ret = accept_loop(sk);
Jens Axboe87aa8f12011-10-06 21:24:13 +02001575
Jens Axboe81179ee2011-10-04 12:42:06 +02001576 close(sk);
Jens Axboe87aa8f12011-10-06 21:24:13 +02001577
1578 if (fio_server_arg) {
1579 free(fio_server_arg);
1580 fio_server_arg = NULL;
1581 }
Jens Axboebebe6392011-10-07 10:00:51 +02001582 if (bind_sock)
1583 free(bind_sock);
Jens Axboe87aa8f12011-10-06 21:24:13 +02001584
Jens Axboe81179ee2011-10-04 12:42:06 +02001585 return ret;
1586}
1587
Jens Axboe7b821682011-10-11 12:16:32 +02001588void fio_server_got_signal(int signal)
Jens Axboe9abea482011-10-04 13:21:54 +02001589{
Jens Axboe7b821682011-10-11 12:16:32 +02001590 if (signal == SIGPIPE)
1591 server_fd = -1;
1592 else {
1593 log_info("\nfio: terminating on signal %d\n", signal);
1594 exit_backend = 1;
1595 }
Jens Axboe9abea482011-10-04 13:21:54 +02001596}
1597
Jens Axboe13755d92011-10-10 19:51:26 +02001598static int check_existing_pidfile(const char *pidfile)
1599{
1600 struct stat sb;
1601 char buf[16];
1602 pid_t pid;
1603 FILE *f;
1604
1605 if (stat(pidfile, &sb))
1606 return 0;
1607
1608 f = fopen(pidfile, "r");
1609 if (!f)
1610 return 0;
1611
Jens Axboebfc3b172011-10-10 21:16:55 +02001612 if (fread(buf, sb.st_size, 1, f) <= 0) {
Jens Axboe13755d92011-10-10 19:51:26 +02001613 fclose(f);
1614 return 1;
1615 }
1616 fclose(f);
1617
1618 pid = atoi(buf);
1619 if (kill(pid, SIGCONT) < 0)
Jens Axboeea5aa1b2011-10-11 11:45:35 +02001620 return errno != ESRCH;
Jens Axboe13755d92011-10-10 19:51:26 +02001621
1622 return 1;
1623}
1624
1625static int write_pid(pid_t pid, const char *pidfile)
Jens Axboe402668f2011-10-10 15:28:58 +02001626{
1627 FILE *fpid;
1628
1629 fpid = fopen(pidfile, "w");
1630 if (!fpid) {
1631 log_err("fio: failed opening pid file %s\n", pidfile);
Jens Axboe13755d92011-10-10 19:51:26 +02001632 return 1;
Jens Axboe402668f2011-10-10 15:28:58 +02001633 }
1634
1635 fprintf(fpid, "%u\n", (unsigned int) pid);
Jens Axboe13755d92011-10-10 19:51:26 +02001636 fclose(fpid);
1637 return 0;
Jens Axboe402668f2011-10-10 15:28:58 +02001638}
1639
1640/*
1641 * If pidfile is specified, background us.
1642 */
1643int fio_start_server(char *pidfile)
Jens Axboee46d8092011-10-03 09:11:02 +02001644{
1645 pid_t pid;
Jens Axboe402668f2011-10-10 15:28:58 +02001646 int ret;
Jens Axboee46d8092011-10-03 09:11:02 +02001647
Bruce Cran93bcfd22012-02-20 20:18:19 +01001648#if defined(WIN32)
Jens Axboe905c78b2012-03-06 19:34:22 +01001649 WSADATA wsd;
Jens Axboe3c3ed072012-03-27 09:12:39 +02001650 WSAStartup(MAKEWORD(2, 2), &wsd);
Bruce Cran93bcfd22012-02-20 20:18:19 +01001651#endif
1652
Jens Axboe402668f2011-10-10 15:28:58 +02001653 if (!pidfile)
Jens Axboee46d8092011-10-03 09:11:02 +02001654 return fio_server();
1655
Jens Axboe13755d92011-10-10 19:51:26 +02001656 if (check_existing_pidfile(pidfile)) {
1657 log_err("fio: pidfile %s exists and server appears alive\n",
1658 pidfile);
1659 return -1;
1660 }
1661
Jens Axboee46d8092011-10-03 09:11:02 +02001662 pid = fork();
1663 if (pid < 0) {
Jens Axboe13755d92011-10-10 19:51:26 +02001664 log_err("fio: failed server fork: %s", strerror(errno));
Jens Axboe402668f2011-10-10 15:28:58 +02001665 free(pidfile);
Jens Axboec28e8e82011-10-04 08:57:39 +02001666 return -1;
Jens Axboe402668f2011-10-10 15:28:58 +02001667 } else if (pid) {
Jens Axboe13755d92011-10-10 19:51:26 +02001668 int ret = write_pid(pid, pidfile);
1669
1670 exit(ret);
Jens Axboe402668f2011-10-10 15:28:58 +02001671 }
Jens Axboee46d8092011-10-03 09:11:02 +02001672
1673 setsid();
Jens Axboe13755d92011-10-10 19:51:26 +02001674 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1675 log_syslog = 1;
Jens Axboee46d8092011-10-03 09:11:02 +02001676 close(STDIN_FILENO);
1677 close(STDOUT_FILENO);
1678 close(STDERR_FILENO);
1679 f_out = NULL;
1680 f_err = NULL;
Jens Axboe402668f2011-10-10 15:28:58 +02001681
1682 ret = fio_server();
1683
1684 closelog();
1685 unlink(pidfile);
1686 free(pidfile);
1687 return ret;
Jens Axboee46d8092011-10-03 09:11:02 +02001688}
Jens Axboe87aa8f12011-10-06 21:24:13 +02001689
Jens Axboebebe6392011-10-07 10:00:51 +02001690void fio_server_set_arg(const char *arg)
Jens Axboe87aa8f12011-10-06 21:24:13 +02001691{
1692 fio_server_arg = strdup(arg);
1693}