| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <unistd.h> |
| #include <limits.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/poll.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <sys/mman.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <netdb.h> |
| #include <syslog.h> |
| #include <signal.h> |
| |
| #include "fio.h" |
| #include "server.h" |
| #include "crc/crc16.h" |
| |
| int fio_net_port = 8765; |
| |
| int exit_backend = 0; |
| |
| static int server_fd = -1; |
| |
| int fio_send_data(int sk, const void *p, unsigned int len) |
| { |
| assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU); |
| |
| do { |
| int ret = send(sk, p, len, 0); |
| |
| if (ret > 0) { |
| len -= ret; |
| if (!len) |
| break; |
| p += ret; |
| continue; |
| } else if (!ret) |
| break; |
| else if (errno == EAGAIN || errno == EINTR) |
| continue; |
| } while (!exit_backend); |
| |
| if (!len) |
| return 0; |
| |
| return 1; |
| } |
| |
| int fio_recv_data(int sk, void *p, unsigned int len) |
| { |
| do { |
| int ret = recv(sk, p, len, MSG_WAITALL); |
| |
| if (ret > 0) { |
| len -= ret; |
| if (!len) |
| break; |
| p += ret; |
| continue; |
| } else if (!ret) |
| break; |
| else if (errno == EAGAIN || errno == EINTR) |
| continue; |
| } while (!exit_backend); |
| |
| if (!len) |
| return 0; |
| |
| return -1; |
| } |
| |
| static int verify_convert_cmd(struct fio_net_cmd *cmd) |
| { |
| uint16_t crc; |
| |
| cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); |
| cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); |
| |
| crc = crc16(cmd, FIO_NET_CMD_CRC_SZ); |
| if (crc != cmd->cmd_crc16) { |
| log_err("fio: server bad crc on command (got %x, wanted %x)\n", |
| cmd->cmd_crc16, crc); |
| return 1; |
| } |
| |
| cmd->version = le16_to_cpu(cmd->version); |
| cmd->opcode = le16_to_cpu(cmd->opcode); |
| cmd->flags = le32_to_cpu(cmd->flags); |
| cmd->serial = le64_to_cpu(cmd->serial); |
| cmd->pdu_len = le32_to_cpu(cmd->pdu_len); |
| |
| switch (cmd->version) { |
| case FIO_SERVER_VER1: |
| break; |
| default: |
| log_err("fio: bad server cmd version %d\n", cmd->version); |
| return 1; |
| } |
| |
| if (cmd->pdu_len > FIO_SERVER_MAX_PDU) { |
| log_err("fio: command payload too large: %u\n", cmd->pdu_len); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Read (and defragment, if necessary) incoming commands |
| */ |
| struct fio_net_cmd *fio_net_recv_cmd(int sk, int block) |
| { |
| struct fio_net_cmd cmd, *cmdret = NULL; |
| size_t cmd_size = 0, pdu_offset = 0; |
| uint16_t crc; |
| int ret, first = 1; |
| void *pdu = NULL; |
| |
| do { |
| struct pollfd pfd; |
| |
| pfd.fd = sk; |
| pfd.events = POLLIN; |
| ret = 0; |
| do { |
| int timeo = block ? 100 : 10; |
| |
| ret = poll(&pfd, 1, timeo); |
| if (ret < 0) { |
| if (errno == EINTR) |
| break; |
| log_err("fio: poll: %s\n", strerror(errno)); |
| break; |
| } else if (!ret) { |
| if (!block) |
| return NULL; |
| continue; |
| } |
| |
| if (pfd.revents & POLLIN) |
| break; |
| if (pfd.revents & (POLLERR|POLLHUP)) { |
| ret = 1; |
| break; |
| } |
| } while (ret >= 0 && block); |
| |
| if (ret < 0) |
| break; |
| |
| ret = fio_recv_data(sk, &cmd, sizeof(cmd)); |
| if (ret) |
| break; |
| |
| /* We have a command, verify it and swap if need be */ |
| ret = verify_convert_cmd(&cmd); |
| if (ret) |
| break; |
| |
| if (first) { |
| /* if this is text, add room for \0 at the end */ |
| cmd_size = sizeof(cmd) + cmd.pdu_len + 1; |
| assert(!cmdret); |
| } else |
| cmd_size += cmd.pdu_len; |
| |
| cmdret = realloc(cmdret, cmd_size); |
| |
| if (first) |
| memcpy(cmdret, &cmd, sizeof(cmd)); |
| else |
| assert(cmdret->opcode == cmd.opcode); |
| |
| if (!cmd.pdu_len) |
| break; |
| |
| /* There's payload, get it */ |
| pdu = (void *) cmdret->payload + pdu_offset; |
| ret = fio_recv_data(sk, pdu, cmd.pdu_len); |
| if (ret) |
| break; |
| |
| /* Verify payload crc */ |
| crc = crc16(pdu, cmd.pdu_len); |
| if (crc != cmd.pdu_crc16) { |
| log_err("fio: server bad crc on payload "); |
| log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); |
| ret = 1; |
| break; |
| } |
| |
| pdu_offset += cmd.pdu_len; |
| if (!first) |
| cmdret->pdu_len += cmd.pdu_len; |
| first = 0; |
| } while (cmd.flags & FIO_NET_CMD_F_MORE); |
| |
| if (ret) { |
| free(cmdret); |
| cmdret = NULL; |
| } else if (cmdret) { |
| /* zero-terminate text input */ |
| if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT || |
| cmdret->opcode == FIO_NET_CMD_JOB)) { |
| char *buf = (char *) cmdret->payload; |
| |
| buf[cmdret->pdu_len ] = '\0'; |
| } |
| /* frag flag is internal */ |
| cmdret->flags &= ~FIO_NET_CMD_F_MORE; |
| } |
| |
| return cmdret; |
| } |
| |
| void fio_net_cmd_crc(struct fio_net_cmd *cmd) |
| { |
| uint32_t pdu_len; |
| |
| cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ)); |
| |
| pdu_len = le32_to_cpu(cmd->pdu_len); |
| if (pdu_len) |
| cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len)); |
| } |
| |
| int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size) |
| { |
| struct fio_net_cmd *cmd; |
| size_t this_len; |
| int ret; |
| |
| do { |
| this_len = size; |
| if (this_len > FIO_SERVER_MAX_PDU) |
| this_len = FIO_SERVER_MAX_PDU; |
| |
| cmd = malloc(sizeof(*cmd) + this_len); |
| |
| fio_init_net_cmd(cmd, opcode, buf, this_len); |
| |
| if (this_len < size) |
| cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); |
| |
| fio_net_cmd_crc(cmd); |
| |
| ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); |
| free(cmd); |
| size -= this_len; |
| buf += this_len; |
| } while (!ret && size); |
| |
| return ret; |
| } |
| |
| int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial) |
| { |
| struct fio_net_cmd cmd = { |
| .version = __cpu_to_le16(FIO_SERVER_VER1), |
| .opcode = cpu_to_le16(opcode), |
| .serial = cpu_to_le64(serial), |
| }; |
| |
| fio_net_cmd_crc(&cmd); |
| |
| return fio_send_data(sk, &cmd, sizeof(cmd)); |
| } |
| |
| static int fio_server_send_quit_cmd(void) |
| { |
| dprint(FD_NET, "server: sending quit\n"); |
| return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0); |
| } |
| |
| static int handle_job_cmd(struct fio_net_cmd *cmd) |
| { |
| char *buf = (char *) cmd->payload; |
| int ret; |
| |
| if (parse_jobs_ini(buf, 1, 0)) |
| return -1; |
| |
| fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0); |
| |
| ret = exec_run(); |
| fio_server_send_quit_cmd(); |
| reset_fio_state(); |
| return ret; |
| } |
| |
| static int handle_jobline_cmd(struct fio_net_cmd *cmd) |
| { |
| struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload; |
| char *argv[FIO_NET_CMD_JOBLINE_ARGV]; |
| int ret, i; |
| |
| pdu->argc = le16_to_cpu(pdu->argc); |
| |
| dprint(FD_NET, "server: %d command line args\n", pdu->argc); |
| |
| for (i = 0; i < pdu->argc; i++) { |
| argv[i] = (char *) pdu->argv[i]; |
| dprint(FD_NET, "server: %d: %s\n", i, argv[i]); |
| } |
| |
| if (parse_cmd_line(pdu->argc, argv)) |
| return -1; |
| |
| fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0); |
| |
| ret = exec_run(); |
| fio_server_send_quit_cmd(); |
| reset_fio_state(); |
| return ret; |
| } |
| |
| static int handle_probe_cmd(struct fio_net_cmd *cmd) |
| { |
| struct cmd_probe_pdu probe; |
| |
| memset(&probe, 0, sizeof(probe)); |
| gethostname((char *) probe.hostname, sizeof(probe.hostname)); |
| #ifdef FIO_BIG_ENDIAN |
| probe.bigendian = 1; |
| #endif |
| probe.fio_major = FIO_MAJOR; |
| probe.fio_minor = FIO_MINOR; |
| probe.fio_patch = FIO_PATCH; |
| |
| return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe)); |
| } |
| |
| static int handle_command(struct fio_net_cmd *cmd) |
| { |
| int ret; |
| |
| dprint(FD_NET, "server: got opcode %d\n", cmd->opcode); |
| |
| switch (cmd->opcode) { |
| case FIO_NET_CMD_QUIT: |
| fio_terminate_threads(TERMINATE_ALL); |
| return -1; |
| case FIO_NET_CMD_EXIT: |
| exit_backend = 1; |
| return -1; |
| case FIO_NET_CMD_JOB: |
| ret = handle_job_cmd(cmd); |
| break; |
| case FIO_NET_CMD_JOBLINE: |
| ret = handle_jobline_cmd(cmd); |
| break; |
| case FIO_NET_CMD_PROBE: |
| ret = handle_probe_cmd(cmd); |
| break; |
| default: |
| log_err("fio: unknown opcode: %d\n", cmd->opcode); |
| ret = 1; |
| } |
| |
| return ret; |
| } |
| |
| static int handle_connection(int sk, int block) |
| { |
| struct fio_net_cmd *cmd = NULL; |
| int ret = 0; |
| |
| /* read forever */ |
| while (!exit_backend) { |
| cmd = fio_net_recv_cmd(sk, block); |
| if (!cmd) { |
| ret = -1; |
| break; |
| } |
| |
| ret = handle_command(cmd); |
| if (ret) |
| break; |
| |
| free(cmd); |
| cmd = NULL; |
| } |
| |
| if (cmd) |
| free(cmd); |
| |
| return ret; |
| } |
| |
| void fio_server_idle_loop(void) |
| { |
| if (server_fd != -1) |
| handle_connection(server_fd, 0); |
| } |
| |
| static int accept_loop(int listen_sk) |
| { |
| struct sockaddr addr; |
| unsigned int len = sizeof(addr); |
| struct pollfd pfd; |
| int ret, sk, flags, exitval = 0; |
| |
| dprint(FD_NET, "server enter accept loop\n"); |
| |
| flags = fcntl(listen_sk, F_GETFL); |
| flags |= O_NONBLOCK; |
| fcntl(listen_sk, F_SETFL, flags); |
| again: |
| pfd.fd = listen_sk; |
| pfd.events = POLLIN; |
| do { |
| ret = poll(&pfd, 1, 100); |
| if (ret < 0) { |
| if (errno == EINTR) |
| break; |
| log_err("fio: poll: %s\n", strerror(errno)); |
| goto out; |
| } else if (!ret) |
| continue; |
| |
| if (pfd.revents & POLLIN) |
| break; |
| } while (!exit_backend); |
| |
| if (exit_backend) |
| goto out; |
| |
| sk = accept(listen_sk, &addr, &len); |
| if (sk < 0) { |
| log_err("fio: accept: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| dprint(FD_NET, "server got a connection\n"); |
| |
| server_fd = sk; |
| |
| exitval = handle_connection(sk, 1); |
| |
| server_fd = -1; |
| close(sk); |
| |
| if (!exit_backend) |
| goto again; |
| |
| out: |
| return exitval; |
| } |
| |
| int fio_server_text_output(const char *buf, unsigned int len) |
| { |
| if (server_fd != -1) |
| return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len); |
| |
| return 0; |
| } |
| |
| static void convert_io_stat(struct io_stat *dst, struct io_stat *src) |
| { |
| dst->max_val = cpu_to_le64(src->max_val); |
| dst->min_val = cpu_to_le64(src->min_val); |
| dst->samples = cpu_to_le64(src->samples); |
| /* FIXME */ |
| dst->mean = __cpu_to_le64(src->mean); |
| dst->S = __cpu_to_le64(src->S); |
| } |
| |
| static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) |
| { |
| int i; |
| |
| for (i = 0; i < 2; i++) { |
| dst->max_run[i] = cpu_to_le64(src->max_run[i]); |
| dst->min_run[i] = cpu_to_le64(src->min_run[i]); |
| dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); |
| dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); |
| dst->io_kb[i] = cpu_to_le64(src->io_kb[i]); |
| dst->agg[i] = cpu_to_le64(src->agg[i]); |
| } |
| |
| dst->kb_base = cpu_to_le32(src->kb_base); |
| dst->groupid = cpu_to_le32(src->groupid); |
| } |
| |
| /* |
| * Send a CMD_TS, which packs struct thread_stat and group_run_stats |
| * into a single payload. |
| */ |
| void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) |
| { |
| struct cmd_ts_pdu p; |
| int i, j; |
| |
| dprint(FD_NET, "server sending end stats\n"); |
| |
| memset(&p, 0, sizeof(p)); |
| |
| strcpy(p.ts.name, ts->name); |
| strcpy(p.ts.verror, ts->verror); |
| strcpy(p.ts.description, ts->description); |
| |
| p.ts.error = cpu_to_le32(ts->error); |
| p.ts.groupid = cpu_to_le32(ts->groupid); |
| p.ts.pid = cpu_to_le32(ts->pid); |
| p.ts.members = cpu_to_le32(ts->members); |
| |
| for (i = 0; i < 2; i++) { |
| convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); |
| convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); |
| convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); |
| convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); |
| } |
| |
| p.ts.usr_time = cpu_to_le64(ts->usr_time); |
| p.ts.sys_time = cpu_to_le64(ts->sys_time); |
| p.ts.ctx = cpu_to_le64(ts->ctx); |
| p.ts.minf = cpu_to_le64(ts->minf); |
| p.ts.majf = cpu_to_le64(ts->majf); |
| p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); |
| p.ts.percentile_list = NULL; |
| |
| for (i = 0; i < FIO_IO_U_MAP_NR; i++) { |
| p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); |
| p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); |
| p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); |
| } |
| |
| for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { |
| p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); |
| p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); |
| } |
| |
| for (i = 0; i < 2; i++) |
| for (j = 0; j < FIO_IO_U_PLAT_NR; j++) |
| p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); |
| |
| for (i = 0; i < 3; i++) { |
| p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); |
| p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]); |
| } |
| |
| p.ts.total_submit = cpu_to_le64(ts->total_submit); |
| p.ts.total_complete = cpu_to_le64(ts->total_complete); |
| |
| for (i = 0; i < 2; i++) { |
| p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); |
| p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); |
| } |
| |
| p.ts.total_run_time = cpu_to_le64(ts->total_run_time); |
| p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); |
| p.ts.total_err_count = cpu_to_le64(ts->total_err_count); |
| p.ts.first_error = cpu_to_le32(ts->first_error); |
| p.ts.kb_base = cpu_to_le32(ts->kb_base); |
| |
| convert_gs(&p.rs, rs); |
| |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p)); |
| } |
| |
| void fio_server_send_gs(struct group_run_stats *rs) |
| { |
| struct group_run_stats gs; |
| |
| dprint(FD_NET, "server sending group run stats\n"); |
| |
| convert_gs(&gs, rs); |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs)); |
| } |
| |
| void fio_server_send_status(void) |
| { |
| struct jobs_eta *je; |
| size_t size; |
| void *buf; |
| int i; |
| |
| size = sizeof(*je) + thread_number * sizeof(char); |
| buf = malloc(size); |
| memset(buf, 0, size); |
| je = buf; |
| |
| if (!calc_thread_status(je)) { |
| free(je); |
| return; |
| } |
| |
| dprint(FD_NET, "server sending status\n"); |
| |
| je->nr_running = cpu_to_le32(je->nr_running); |
| je->nr_ramp = cpu_to_le32(je->nr_ramp); |
| je->nr_pending = cpu_to_le32(je->nr_pending); |
| je->files_open = cpu_to_le32(je->files_open); |
| je->m_rate = cpu_to_le32(je->m_rate); |
| je->t_rate = cpu_to_le32(je->t_rate); |
| je->m_iops = cpu_to_le32(je->m_iops); |
| je->t_iops = cpu_to_le32(je->t_iops); |
| |
| for (i = 0; i < 2; i++) { |
| je->rate[i] = cpu_to_le32(je->rate[i]); |
| je->iops[i] = cpu_to_le32(je->iops[i]); |
| } |
| |
| je->elapsed_sec = cpu_to_le32(je->nr_running); |
| je->eta_sec = cpu_to_le64(je->eta_sec); |
| |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size); |
| free(je); |
| } |
| |
| int fio_server_log(const char *format, ...) |
| { |
| char buffer[1024]; |
| va_list args; |
| size_t len; |
| |
| dprint(FD_NET, "server log\n"); |
| |
| va_start(args, format); |
| len = vsnprintf(buffer, sizeof(buffer), format, args); |
| va_end(args); |
| |
| return fio_server_text_output(buffer, len); |
| } |
| |
| static int fio_server(void) |
| { |
| struct sockaddr_in saddr_in; |
| struct sockaddr addr; |
| unsigned int len; |
| int sk, opt, ret; |
| |
| dprint(FD_NET, "starting server\n"); |
| |
| sk = socket(AF_INET, SOCK_STREAM, 0); |
| if (sk < 0) { |
| log_err("fio: socket: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| opt = 1; |
| if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { |
| log_err("fio: setsockopt: %s\n", strerror(errno)); |
| return -1; |
| } |
| #ifdef SO_REUSEPORT |
| if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { |
| log_err("fio: setsockopt: %s\n", strerror(errno)); |
| return -1; |
| } |
| #endif |
| |
| saddr_in.sin_family = AF_INET; |
| saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
| saddr_in.sin_port = htons(fio_net_port); |
| |
| if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) { |
| log_err("fio: bind: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| if (listen(sk, 1) < 0) { |
| log_err("fio: listen: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| len = sizeof(addr); |
| if (getsockname(sk, &addr, &len) < 0) { |
| log_err("fio: getsockname: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| ret = accept_loop(sk); |
| close(sk); |
| return ret; |
| } |
| |
| static void sig_int(int sig) |
| { |
| fio_terminate_threads(TERMINATE_ALL); |
| exit_backend = 1; |
| } |
| |
| static void server_signal_handler(void) |
| { |
| struct sigaction act; |
| |
| memset(&act, 0, sizeof(act)); |
| act.sa_handler = sig_int; |
| act.sa_flags = SA_RESTART; |
| sigaction(SIGINT, &act, NULL); |
| |
| memset(&act, 0, sizeof(act)); |
| act.sa_handler = sig_int; |
| act.sa_flags = SA_RESTART; |
| sigaction(SIGTERM, &act, NULL); |
| } |
| |
| int fio_start_server(int daemonize) |
| { |
| pid_t pid; |
| |
| server_signal_handler(); |
| |
| if (!daemonize) |
| return fio_server(); |
| |
| openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); |
| pid = fork(); |
| if (pid < 0) { |
| syslog(LOG_ERR, "failed server fork"); |
| return -1; |
| } else if (pid) |
| exit(0); |
| |
| setsid(); |
| close(STDIN_FILENO); |
| close(STDOUT_FILENO); |
| close(STDERR_FILENO); |
| f_out = NULL; |
| f_err = NULL; |
| log_syslog = 1; |
| return fio_server(); |
| } |