12 #include <netinet/in.h>
13 #include <arpa/inet.h>
19 #include "crc/crc16.h"
21 int fio_net_port = 8765;
25 static int server_fd = -1;
27 int fio_send_data(int sk, const void *p, unsigned int len)
29 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
32 int ret = send(sk, p, len, 0);
42 else if (errno == EAGAIN || errno == EINTR)
44 } while (!exit_backend);
52 int fio_recv_data(int sk, void *p, unsigned int len)
55 int ret = recv(sk, p, len, MSG_WAITALL);
65 else if (errno == EAGAIN || errno == EINTR)
67 } while (!exit_backend);
75 static int verify_convert_cmd(struct fio_net_cmd *cmd)
79 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
80 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
82 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
83 if (crc != cmd->cmd_crc16) {
84 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
89 cmd->version = le16_to_cpu(cmd->version);
90 cmd->opcode = le16_to_cpu(cmd->opcode);
91 cmd->flags = le32_to_cpu(cmd->flags);
92 cmd->serial = le64_to_cpu(cmd->serial);
93 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
95 switch (cmd->version) {
99 log_err("fio: bad server cmd version %d\n", cmd->version);
103 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
104 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
112 * Read (and defragment, if necessary) incoming commands
114 struct fio_net_cmd *fio_net_recv_cmd(int sk)
116 struct fio_net_cmd cmd, *cmdret = NULL;
117 size_t cmd_size = 0, pdu_offset = 0;
123 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
127 /* We have a command, verify it and swap if need be */
128 ret = verify_convert_cmd(&cmd);
133 cmd_size = sizeof(cmd) + cmd.pdu_len;
135 cmd_size += cmd.pdu_len;
137 cmdret = realloc(cmdret, cmd_size);
140 memcpy(cmdret, &cmd, sizeof(cmd));
142 assert(cmdret->opcode == cmd.opcode);
147 /* There's payload, get it */
148 pdu = (void *) cmdret->payload + pdu_offset;
149 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
153 /* Verify payload crc */
154 crc = crc16(pdu, cmd.pdu_len);
155 if (crc != cmd.pdu_crc16) {
156 log_err("fio: server bad crc on payload ");
157 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
162 pdu_offset += cmd.pdu_len;
164 cmdret->pdu_len += cmd.pdu_len;
166 } while (cmd.flags & FIO_NET_CMD_F_MORE);
174 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
179 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
183 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
185 pdu_len = le32_to_cpu(cmd->pdu_len);
187 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
190 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
192 struct fio_net_cmd *cmd;
198 if (this_len > FIO_SERVER_MAX_PDU)
199 this_len = FIO_SERVER_MAX_PDU;
201 cmd = malloc(sizeof(*cmd) + this_len);
203 fio_init_net_cmd(cmd, opcode, buf, this_len);
206 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
208 fio_net_cmd_crc(cmd);
210 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
214 } while (!ret && size);
219 static int send_simple_command(int sk, uint16_t opcode, uint64_t serial)
221 struct fio_net_cmd cmd = {
222 .version = __cpu_to_le16(FIO_SERVER_VER1),
223 .opcode = cpu_to_le16(opcode),
224 .serial = cpu_to_le64(serial),
227 fio_net_cmd_crc(&cmd);
229 return fio_send_data(sk, &cmd, sizeof(cmd));
233 * Send an ack for this command
235 static int ack_command(int sk, struct fio_net_cmd *cmd)
238 return send_simple_command(sk, FIO_NET_CMD_ACK, cmd->serial);
245 static int nak_command(int sk, struct fio_net_cmd *cmd)
247 return send_simple_command(sk, FIO_NET_CMD_NAK, cmd->serial);
251 static int send_quit_command(void)
253 dprint(FD_NET, "server: sending quit\n");
254 return send_simple_command(server_fd, FIO_NET_CMD_QUIT, 0);
257 static int handle_cur_job(struct fio_net_cmd *cmd)
259 void *buf = cmd->payload;
262 parse_jobs_ini(buf, 1, 0);
269 static int handle_command(struct fio_net_cmd *cmd)
273 dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
275 switch (cmd->opcode) {
276 case FIO_NET_CMD_QUIT:
278 case FIO_NET_CMD_EXIT:
281 case FIO_NET_CMD_ACK:
283 case FIO_NET_CMD_NAK:
285 case FIO_NET_CMD_JOB:
286 ret = handle_cur_job(cmd);
289 log_err("fio: unknown opcode: %d\n", cmd->opcode);
296 static int handle_connection(int sk)
298 struct fio_net_cmd *cmd = NULL;
302 while (!exit_backend) {
303 cmd = fio_net_recv_cmd(sk);
309 ret = ack_command(sk, cmd);
313 ret = handle_command(cmd);
327 static int accept_loop(int listen_sk)
329 struct sockaddr addr;
330 unsigned int len = sizeof(addr);
332 int ret, sk, flags, exitval = 0;
334 flags = fcntl(listen_sk, F_GETFL);
336 fcntl(listen_sk, F_SETFL, flags);
341 ret = poll(&pfd, 1, 100);
345 log_err("fio: poll: %s\n", strerror(errno));
350 if (pfd.revents & POLLIN)
352 } while (!exit_backend);
357 sk = accept(listen_sk, &addr, &len);
359 log_err("fio: accept: %s\n", strerror(errno));
363 dprint(FD_NET, "server got a connection\n");
367 exitval = handle_connection(sk);
379 static int fio_server(void)
381 struct sockaddr_in saddr_in;
382 struct sockaddr addr;
386 dprint(FD_NET, "starting server\n");
388 sk = socket(AF_INET, SOCK_STREAM, 0);
390 log_err("fio: socket: %s\n", strerror(errno));
395 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
396 log_err("fio: setsockopt: %s\n", strerror(errno));
400 if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
401 log_err("fio: setsockopt: %s\n", strerror(errno));
406 saddr_in.sin_family = AF_INET;
407 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
408 saddr_in.sin_port = htons(fio_net_port);
410 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
411 log_err("fio: bind: %s\n", strerror(errno));
415 if (listen(sk, 1) < 0) {
416 log_err("fio: listen: %s\n", strerror(errno));
421 if (getsockname(sk, &addr, &len) < 0) {
422 log_err("fio: getsockname: %s\n", strerror(errno));
426 ret = accept_loop(sk);
431 int fio_server_text_output(const char *buf, unsigned int len)
434 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
439 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
441 dst->max_val = cpu_to_le64(src->max_val);
442 dst->min_val = cpu_to_le64(src->min_val);
443 dst->samples = cpu_to_le64(src->samples);
445 dst->mean = __cpu_to_le64(src->mean);
446 dst->S = __cpu_to_le64(src->S);
449 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
453 for (i = 0; i < 2; i++) {
454 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
455 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
456 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
457 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
458 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
459 dst->agg[i] = cpu_to_le64(src->agg[i]);
462 dst->kb_base = cpu_to_le32(src->kb_base);
463 dst->groupid = cpu_to_le32(src->groupid);
467 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
468 * into a single payload.
470 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
475 strcpy(p.ts.name, ts->name);
476 strcpy(p.ts.verror, ts->verror);
477 strcpy(p.ts.description, ts->description);
479 p.ts.error = cpu_to_le32(ts->error);
480 p.ts.groupid = cpu_to_le32(ts->groupid);
481 p.ts.pid = cpu_to_le32(ts->pid);
482 p.ts.members = cpu_to_le32(ts->members);
484 for (i = 0; i < 2; i++) {
485 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
486 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
487 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
488 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
491 p.ts.usr_time = cpu_to_le64(ts->usr_time);
492 p.ts.sys_time = cpu_to_le64(ts->sys_time);
493 p.ts.ctx = cpu_to_le64(ts->ctx);
494 p.ts.minf = cpu_to_le64(ts->minf);
495 p.ts.majf = cpu_to_le64(ts->majf);
496 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
497 p.ts.percentile_list = NULL;
499 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
500 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
501 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
502 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
505 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
506 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
507 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
510 for (i = 0; i < 2; i++)
511 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
512 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
514 for (i = 0; i < 3; i++) {
515 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
516 p.ts.short_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
519 p.ts.total_submit = cpu_to_le64(ts->total_submit);
520 p.ts.total_complete = cpu_to_le64(ts->total_complete);
522 for (i = 0; i < 2; i++) {
523 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
524 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
527 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
528 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
529 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
530 p.ts.first_error = cpu_to_le32(ts->first_error);
531 p.ts.kb_base = cpu_to_le32(ts->kb_base);
533 convert_gs(&p.rs, rs);
535 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
538 void fio_server_send_gs(struct group_run_stats *rs)
540 struct group_run_stats gs;
543 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
546 int fio_server_log(const char *format, ...)
552 va_start(args, format);
553 len = vsnprintf(buffer, sizeof(buffer), format, args);
556 return fio_server_text_output(buffer, len);
559 int fio_start_server(int daemonize)
566 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
569 syslog(LOG_ERR, "failed server fork");
576 close(STDOUT_FILENO);
577 close(STDERR_FILENO);