[fio.git] / client.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>

#include "fio.h"
#include "server.h"
#include "crc/crc32.h"
#include "flist.h"

struct fio_client {
	struct flist_head list;
	struct sockaddr_in addr;
	char *hostname;
	int fd;

	int state;
	int skip_newline;

	uint16_t argc;
	char **argv;
};

enum {
	Client_created		= 0,
	Client_connected	= 1,
	Client_started		= 2,
	Client_stopped		= 3,
	Client_exited		= 4,
};

static FLIST_HEAD(client_list);

static int handle_client(struct fio_client *client, int one);

static struct fio_client *find_client_by_fd(int fd)
{
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (client->fd == fd)
			return client;
	}

	return NULL;
}

static struct fio_client *find_client_by_name(const char *name)
{
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (!strcmp(name, client->hostname))
			return client;
	}

	return NULL;
}

static void remove_client(struct fio_client *client)
{
	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
	flist_del(&client->list);
	nr_clients--;

	free(client->hostname);
	if (client->argv)
		free(client->argv);

	free(client);
}

static void __fio_client_add_cmd_option(struct fio_client *client,
					const char *opt)
{
	int index;

	index = client->argc++;
	client->argv = realloc(client->argv, sizeof(char *) * client->argc);
	client->argv[index] = strdup(opt);
	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
}

void fio_client_add_cmd_option(const char *hostname, const char *opt)
{
	struct fio_client *client;

	if (!hostname || !opt)
		return;

	client = find_client_by_name(hostname);
	if (!client) {
		log_err("fio: unknown client %s\n", hostname);
		return;
	}

	__fio_client_add_cmd_option(client, opt);
}

void fio_client_add(const char *hostname)
{
	struct fio_client *client;

	dprint(FD_NET, "client: added  <%s>\n", hostname);
	client = malloc(sizeof(*client));
	memset(client, 0, sizeof(*client));

	client->hostname = strdup(hostname);
	client->fd = -1;

	__fio_client_add_cmd_option(client, "fio");

	flist_add(&client->list, &client_list);
	nr_clients++;
}

static int fio_client_connect(struct fio_client *client)
{
	int fd;

	dprint(FD_NET, "client: connect to host %s\n", client->hostname);

	memset(&client->addr, 0, sizeof(client->addr));
	client->addr.sin_family = AF_INET;
	client->addr.sin_port = htons(fio_net_port);

	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
		struct hostent *hent;

		hent = gethostbyname(client->hostname);
		if (!hent) {
			log_err("fio: gethostbyname: %s\n", strerror(errno));
			return 1;
		}

		memcpy(&client->addr.sin_addr, hent->h_addr, 4);
	}

	fd = socket(AF_INET, SOCK_STREAM, 0);
	if (fd < 0) {
		log_err("fio: socket: %s\n", strerror(errno));
		return 1;
	}

	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
		log_err("fio: connect: %s\n", strerror(errno));
		log_err("fio: failed to connect to %s\n", client->hostname);
		return 1;
	}

	client->fd = fd;
	client->state = Client_connected;
	return 0;
}

void fio_clients_terminate(void)
{
	struct flist_head *entry;
	struct fio_client *client;

	dprint(FD_NET, "client: terminate clients\n");

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	}
}

static void sig_int(int sig)
{
	dprint(FD_NET, "client: got sign %d\n", sig);
	fio_clients_terminate();
}

static void client_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);
}

static void probe_client(struct fio_client *client)
{
	dprint(FD_NET, "client: send probe\n");

	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	handle_client(client, 1);
}

static int send_client_cmd_line(struct fio_client *client)
{
	struct cmd_line_pdu *pdu;
	int i, ret;

	dprint(FD_NET, "client: send cmdline %d\n", client->argc);

	pdu = malloc(sizeof(*pdu));
	for (i = 0; i < client->argc; i++)
		strcpy((char *) pdu->argv[i], client->argv[i]);

	pdu->argc = cpu_to_le16(client->argc);
	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	free(pdu);
	return ret;
}

int fio_clients_connect(void)
{
	struct fio_client *client;
	struct flist_head *entry, *tmp;
	int ret;

	dprint(FD_NET, "client: connect all\n");

	client_signal_handler();

	flist_for_each_safe(entry, tmp, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		ret = fio_client_connect(client);
		if (ret) {
			remove_client(client);
			continue;
		}

		probe_client(client);

		if (client->argc > 1)
			send_client_cmd_line(client);
	}

	return !nr_clients;
}

/*
 * Send file contents to server backend. We could use sendfile(), but to remain
 * more portable lets just read/write the darn thing.
 */
static int fio_client_send_ini(struct fio_client *client, const char *filename)
{
	struct stat sb;
	char *p, *buf;
	off_t len;
	int fd, ret;

	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);

	fd = open(filename, O_RDONLY);
	if (fd < 0) {
		log_err("fio: job file open: %s\n", strerror(errno));
		return 1;
	}

	if (fstat(fd, &sb) < 0) {
		log_err("fio: job file stat: %s\n", strerror(errno));
		return 1;
	}

	buf = malloc(sb.st_size);

	len = sb.st_size;
	p = buf;
	do {
		ret = read(fd, p, len);
		if (ret > 0) {
			len -= ret;
			if (!len)
				break;
			p += ret;
			continue;
		} else if (!ret)
			break;
		else if (errno == EAGAIN || errno == EINTR)
			continue;
	} while (1);

	if (len) {
		log_err("fio: failed reading job file %s\n", filename);
		return 1;
	}

	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
	free(buf);
	return ret;
}

int fio_clients_send_ini(const char *filename)
{
	struct fio_client *client;
	struct flist_head *entry, *tmp;

	flist_for_each_safe(entry, tmp, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (fio_client_send_ini(client, filename))
			remove_client(client);
	}

	return !nr_clients;
}

static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
	dst->max_val	= le64_to_cpu(src->max_val);
	dst->min_val	= le64_to_cpu(src->min_val);
	dst->samples	= le64_to_cpu(src->samples);

	/*
	 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	 */
	dst->mean.u.f	= fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	dst->S.u.f	= fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
}

static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
{
	int i, j;

	dst->error	= le32_to_cpu(src->error);
	dst->groupid	= le32_to_cpu(src->groupid);
	dst->pid	= le32_to_cpu(src->pid);
	dst->members	= le32_to_cpu(src->members);

	for (i = 0; i < 2; i++) {
		convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
		convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
		convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
		convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	}

	dst->usr_time		= le64_to_cpu(src->usr_time);
	dst->sys_time		= le64_to_cpu(src->sys_time);
	dst->ctx		= le64_to_cpu(src->ctx);
	dst->minf		= le64_to_cpu(src->minf);
	dst->majf		= le64_to_cpu(src->majf);
	dst->clat_percentiles	= le64_to_cpu(src->clat_percentiles);

	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
		fio_fp64_t *fps = &src->percentile_list[i];
		fio_fp64_t *fpd = &dst->percentile_list[i];

		fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	}

	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
		dst->io_u_map[i]	= le32_to_cpu(src->io_u_map[i]);
		dst->io_u_submit[i]	= le32_to_cpu(src->io_u_submit[i]);
		dst->io_u_complete[i]	= le32_to_cpu(src->io_u_complete[i]);
	}

	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
		dst->io_u_lat_u[i]	= le32_to_cpu(src->io_u_lat_u[i]);
		dst->io_u_lat_m[i]	= le32_to_cpu(src->io_u_lat_m[i]);
	}

	for (i = 0; i < 2; i++)
		for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
			dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);

	for (i = 0; i < 3; i++) {
		dst->total_io_u[i]	= le64_to_cpu(src->total_io_u[i]);
		dst->short_io_u[i]	= le64_to_cpu(src->short_io_u[i]);
	}

	dst->total_submit	= le64_to_cpu(src->total_submit);
	dst->total_complete	= le64_to_cpu(src->total_complete);

	for (i = 0; i < 2; i++) {
		dst->io_bytes[i]	= le64_to_cpu(src->io_bytes[i]);
		dst->runtime[i]		= le64_to_cpu(src->runtime[i]);
	}

	dst->total_run_time	= le64_to_cpu(src->total_run_time);
	dst->continue_on_error	= le16_to_cpu(src->continue_on_error);
	dst->total_err_count	= le64_to_cpu(src->total_err_count);
	dst->first_error	= le32_to_cpu(src->first_error);
	dst->kb_base		= le32_to_cpu(src->kb_base);
}

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]		= le64_to_cpu(src->max_run[i]);
		dst->min_run[i]		= le64_to_cpu(src->min_run[i]);
		dst->max_bw[i]		= le64_to_cpu(src->max_bw[i]);
		dst->min_bw[i]		= le64_to_cpu(src->min_bw[i]);
		dst->io_kb[i]		= le64_to_cpu(src->io_kb[i]);
		dst->agg[i]		= le64_to_cpu(src->agg[i]);
	}

	dst->kb_base	= le32_to_cpu(src->kb_base);
	dst->groupid	= le32_to_cpu(src->groupid);
}

static void handle_ts(struct fio_net_cmd *cmd)
{
	struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;

	convert_ts(&p->ts, &p->ts);
	convert_gs(&p->rs, &p->rs);

	show_thread_status(&p->ts, &p->rs);
}

static void handle_gs(struct fio_net_cmd *cmd)
{
	struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;

	convert_gs(gs, gs);
	show_group_stats(gs);
}

static void handle_eta(struct fio_net_cmd *cmd)
{
	struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
	int i;

	je->nr_running		= le32_to_cpu(je->nr_running);
	je->nr_ramp		= le32_to_cpu(je->nr_ramp);
	je->nr_pending		= le32_to_cpu(je->nr_pending);
	je->files_open		= le32_to_cpu(je->files_open);
	je->m_rate		= le32_to_cpu(je->m_rate);
	je->t_rate		= le32_to_cpu(je->t_rate);
	je->m_iops		= le32_to_cpu(je->m_iops);
	je->t_iops		= le32_to_cpu(je->t_iops);

	for (i = 0; i < 2; i++) {
		je->rate[i]	= le32_to_cpu(je->rate[i]);
		je->iops[i]	= le32_to_cpu(je->iops[i]);
	}

	je->elapsed_sec		= le32_to_cpu(je->nr_running);
	je->eta_sec		= le64_to_cpu(je->eta_sec);

	display_thread_status(je);
}

static void handle_probe(struct fio_net_cmd *cmd)
{
	struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;

	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
		probe->hostname, probe->bigendian, probe->fio_major,
		probe->fio_minor, probe->fio_patch);
}

static int handle_client(struct fio_client *client, int one)
{
	struct fio_net_cmd *cmd;
	int done = 0;

	dprint(FD_NET, "client: handle %s\n", client->hostname);

	while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
		dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
							cmd->opcode);

		switch (cmd->opcode) {
		case FIO_NET_CMD_QUIT:
			remove_client(client);
			free(cmd);
			done = 1;
			break;
		case FIO_NET_CMD_TEXT: {
			const char *buf = (const char *) cmd->payload;

			if (!client->skip_newline)
				fprintf(f_out, "Client <%s>: ", client->hostname);
			fwrite(buf, cmd->pdu_len, 1, f_out);
			fflush(f_out);
			client->skip_newline = strchr(buf, '\n') == NULL;
			free(cmd);
			break;
			}
		case FIO_NET_CMD_TS:
			handle_ts(cmd);
			free(cmd);
			break;
		case FIO_NET_CMD_GS:
			handle_gs(cmd);
			free(cmd);
			break;
		case FIO_NET_CMD_ETA:
			handle_eta(cmd);
			free(cmd);
			break;
		case FIO_NET_CMD_PROBE:
			handle_probe(cmd);
			free(cmd);
			break;
		case FIO_NET_CMD_START:
			client->state = Client_started;
			free(cmd);
			break;
		case FIO_NET_CMD_STOP:
			client->state = Client_stopped;
			free(cmd);
			break;
		default:
			log_err("fio: unknown client op: %d\n", cmd->opcode);
			free(cmd);
			break;
		}

		if (done || one)
			break;
	}

	return 0;
}

int fio_handle_clients(void)
{
	struct fio_client *client;
	struct flist_head *entry;
	struct pollfd *pfds;
	int i, ret = 0;

	pfds = malloc(nr_clients * sizeof(struct pollfd));

	while (!exit_backend && nr_clients) {
		i = 0;
		flist_for_each(entry, &client_list) {
			client = flist_entry(entry, struct fio_client, list);

			pfds[i].fd = client->fd;
			pfds[i].events = POLLIN;
			i++;
		}

		assert(i == nr_clients);

		do {
			ret = poll(pfds, nr_clients, 100);
			if (ret < 0) {
				if (errno == EINTR)
					continue;
				log_err("fio: poll clients: %s\n", strerror(errno));
				break;
			} else if (!ret)
				continue;
		} while (ret <= 0);

		for (i = 0; i < nr_clients; i++) {
			if (!(pfds[i].revents & POLLIN))
				continue;

			client = find_client_by_fd(pfds[i].fd);
			if (!client) {
				log_err("fio: unknown client\n");
				continue;
			}
			handle_client(client, 0);
		}
	}

	free(pfds);
	return 0;
}
Commit	Line	Data
132159a5 JA	1	#include <stdio.h>
	2	#include <stdlib.h>
	3	#include <unistd.h>
	4	#include <limits.h>
	5	#include <errno.h>
	6	#include <fcntl.h>
	7	#include <sys/poll.h>
	8	#include <sys/types.h>
	9	#include <sys/stat.h>
	10	#include <sys/wait.h>
d05c4a03	11	#include <sys/socket.h>
132159a5 JA	12	#include <netinet/in.h>
	13	#include <arpa/inet.h>
	14	#include <netdb.h>
9e22ecb0	15	#include <signal.h>
132159a5 JA	16
	17	#include "fio.h"
	18	#include "server.h"
	19	#include "crc/crc32.h"
b66570dc	20	#include "flist.h"
132159a5	21
b66570dc JA	22	struct fio_client {
	23	struct flist_head list;
	24	struct sockaddr_in addr;
	25	char *hostname;
	26	int fd;
81179eec JA	27
81179eec JA	28	int state;
17dd1764	29	int skip_newline;
81179eec JA	30
	31	uint16_t argc;
	32	char **argv;
	33	};
	34
	35	enum {
5c2857f9	36	Client_created = 0,
81179eec JA	37	Client_connected = 1,
	38	Client_started = 2,
	39	Client_stopped = 3,
5c2857f9	40	Client_exited = 4,
b66570dc JA	41	};
	42
	43	static FLIST_HEAD(client_list);
b66570dc	44
0b8f30a5 JA	45	static int handle_client(struct fio_client *client, int one);
0b8f30a5 JA	46
b66570dc JA	47	static struct fio_client *find_client_by_fd(int fd)
	48	{
	49	struct fio_client *client;
	50	struct flist_head *entry;
	51
	52	flist_for_each(entry, &client_list) {
	53	client = flist_entry(entry, struct fio_client, list);
	54
	55	if (client->fd == fd)
	56	return client;
	57	}
	58
	59	return NULL;
	60	}
	61
	62	static struct fio_client find_client_by_name(const char name)
	63	{
	64	struct fio_client *client;
	65	struct flist_head *entry;
	66
	67	flist_for_each(entry, &client_list) {
	68	client = flist_entry(entry, struct fio_client, list);
	69
	70	if (!strcmp(name, client->hostname))
	71	return client;
	72	}
	73
	74	return NULL;
	75	}
	76
	77	static void remove_client(struct fio_client *client)
	78	{
39e8e016	79	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc JA	80	flist_del(&client->list);
b66570dc JA	81	nr_clients--;
81179eec	82
b66570dc	83	free(client->hostname);
81179eec JA	84	if (client->argv)
	85	free(client->argv);
	86
b66570dc JA	87	free(client);
b66570dc JA	88	}
132159a5	89
81179eec JA	90	static void __fio_client_add_cmd_option(struct fio_client *client,
	91	const char *opt)
	92	{
39e8e016 JA	93	int index;
	94
	95	index = client->argc++;
81179eec	96	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	97	client->argv[index] = strdup(opt);
39e8e016 JA	98	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
81179eec JA	99	}
	100
	101	void fio_client_add_cmd_option(const char hostname, const char opt)
	102	{
	103	struct fio_client *client;
	104
	105	if (!hostname \|\| !opt)
	106	return;
	107
	108	client = find_client_by_name(hostname);
	109	if (!client) {
	110	log_err("fio: unknown client %s\n", hostname);
	111	return;
	112	}
	113
	114	__fio_client_add_cmd_option(client, opt);
	115	}
	116
a37f69b7	117	void fio_client_add(const char *hostname)
132159a5	118	{
b66570dc	119	struct fio_client *client;
132159a5	120
39e8e016	121	dprint(FD_NET, "client: added <%s>\n", hostname);
b66570dc	122	client = malloc(sizeof(*client));
a37f69b7	123	memset(client, 0, sizeof(*client));
81179eec	124
a37f69b7 JA	125	client->hostname = strdup(hostname);
a37f69b7 JA	126	client->fd = -1;
81179eec JA	127
	128	__fio_client_add_cmd_option(client, "fio");
	129
a37f69b7 JA	130	flist_add(&client->list, &client_list);
	131	nr_clients++;
	132	}
	133
	134	static int fio_client_connect(struct fio_client *client)
	135	{
	136	int fd;
132159a5	137
39e8e016	138	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
46c48f1f	139
b66570dc JA	140	memset(&client->addr, 0, sizeof(client->addr));
	141	client->addr.sin_family = AF_INET;
	142	client->addr.sin_port = htons(fio_net_port);
	143
a37f69b7	144	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	145	struct hostent *hent;
132159a5 JA	146
a37f69b7	147	hent = gethostbyname(client->hostname);
132159a5 JA	148	if (!hent) {
	149	log_err("fio: gethostbyname: %s\n", strerror(errno));
	150	return 1;
	151	}
	152
b66570dc	153	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	154	}
	155
	156	fd = socket(AF_INET, SOCK_STREAM, 0);
	157	if (fd < 0) {
	158	log_err("fio: socket: %s\n", strerror(errno));
	159	return 1;
	160	}
	161
b66570dc	162	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	163	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	164	log_err("fio: failed to connect to %s\n", client->hostname);
132159a5 JA	165	return 1;
	166	}
	167
b66570dc	168	client->fd = fd;
81179eec	169	client->state = Client_connected;
132159a5 JA	170	return 0;
	171	}
	172
cc0df00a JA	173	void fio_clients_terminate(void)
	174	{
	175	struct flist_head *entry;
	176	struct fio_client *client;
	177
60efd14e JA	178	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	179
cc0df00a JA	180	flist_for_each(entry, &client_list) {
	181	client = flist_entry(entry, struct fio_client, list);
	182
	183	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	184	}
	185	}
	186
	187	static void sig_int(int sig)
	188	{
60efd14e	189	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	190	fio_clients_terminate();
	191	}
	192
	193	static void client_signal_handler(void)
	194	{
	195	struct sigaction act;
	196
	197	memset(&act, 0, sizeof(act));
	198	act.sa_handler = sig_int;
	199	act.sa_flags = SA_RESTART;
	200	sigaction(SIGINT, &act, NULL);
	201
	202	memset(&act, 0, sizeof(act));
	203	act.sa_handler = sig_int;
	204	act.sa_flags = SA_RESTART;
	205	sigaction(SIGTERM, &act, NULL);
	206	}
	207
0b8f30a5 JA	208	static void probe_client(struct fio_client *client)
0b8f30a5 JA	209	{
60efd14e JA	210	dprint(FD_NET, "client: send probe\n");
60efd14e JA	211
0b8f30a5 JA	212	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	213	handle_client(client, 1);
	214	}
	215
81179eec JA	216	static int send_client_cmd_line(struct fio_client *client)
	217	{
	218	struct cmd_line_pdu *pdu;
	219	int i, ret;
	220
39e8e016	221	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	222
81179eec JA	223	pdu = malloc(sizeof(*pdu));
	224	for (i = 0; i < client->argc; i++)
	225	strcpy((char *) pdu->argv[i], client->argv[i]);
	226
	227	pdu->argc = cpu_to_le16(client->argc);
	228	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	229	free(pdu);
	230	return ret;
	231	}
	232
a37f69b7 JA	233	int fio_clients_connect(void)
	234	{
	235	struct fio_client *client;
	236	struct flist_head entry, tmp;
	237	int ret;
	238
60efd14e JA	239	dprint(FD_NET, "client: connect all\n");
60efd14e JA	240
cc0df00a JA	241	client_signal_handler();
cc0df00a JA	242
a37f69b7 JA	243	flist_for_each_safe(entry, tmp, &client_list) {
	244	client = flist_entry(entry, struct fio_client, list);
	245
	246	ret = fio_client_connect(client);
0b8f30a5	247	if (ret) {
a37f69b7	248	remove_client(client);
0b8f30a5 JA	249	continue;
	250	}
	251
	252	probe_client(client);
81179eec JA	253
	254	if (client->argc > 1)
	255	send_client_cmd_line(client);
a37f69b7 JA	256	}
	257
	258	return !nr_clients;
	259	}
	260
132159a5 JA	261	/*
	262	* Send file contents to server backend. We could use sendfile(), but to remain
	263	* more portable lets just read/write the darn thing.
	264	*/
a37f69b7	265	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	266	{
	267	struct stat sb;
	268	char p, buf;
	269	off_t len;
	270	int fd, ret;
	271
46c48f1f JA	272	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	273
132159a5 JA	274	fd = open(filename, O_RDONLY);
	275	if (fd < 0) {
	276	log_err("fio: job file open: %s\n", strerror(errno));
	277	return 1;
	278	}
	279
	280	if (fstat(fd, &sb) < 0) {
	281	log_err("fio: job file stat: %s\n", strerror(errno));
	282	return 1;
	283	}
	284
	285	buf = malloc(sb.st_size);
	286
	287	len = sb.st_size;
	288	p = buf;
	289	do {
	290	ret = read(fd, p, len);
	291	if (ret > 0) {
	292	len -= ret;
	293	if (!len)
	294	break;
	295	p += ret;
	296	continue;
	297	} else if (!ret)
	298	break;
	299	else if (errno == EAGAIN \|\| errno == EINTR)
	300	continue;
	301	} while (1);
	302
0b8f30a5 JA	303	if (len) {
	304	log_err("fio: failed reading job file %s\n", filename);
	305	return 1;
	306	}
	307
81179eec	308	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	309	free(buf);
	310	return ret;
	311	}
37db14fe	312
a37f69b7 JA	313	int fio_clients_send_ini(const char *filename)
	314	{
	315	struct fio_client *client;
	316	struct flist_head entry, tmp;
	317
	318	flist_for_each_safe(entry, tmp, &client_list) {
	319	client = flist_entry(entry, struct fio_client, list);
	320
	321	if (fio_client_send_ini(client, filename))
	322	remove_client(client);
	323	}
	324
	325	return !nr_clients;
	326	}
	327
a64e88da JA	328	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	329	{
	330	dst->max_val = le64_to_cpu(src->max_val);
	331	dst->min_val = le64_to_cpu(src->min_val);
	332	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	333
	334	/*
	335	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	336	*/
	337	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	338	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	339	}
	340
	341	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	342	{
	343	int i, j;
	344
	345	dst->error = le32_to_cpu(src->error);
	346	dst->groupid = le32_to_cpu(src->groupid);
	347	dst->pid = le32_to_cpu(src->pid);
	348	dst->members = le32_to_cpu(src->members);
	349
	350	for (i = 0; i < 2; i++) {
	351	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	352	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	353	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	354	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	355	}
	356
	357	dst->usr_time = le64_to_cpu(src->usr_time);
	358	dst->sys_time = le64_to_cpu(src->sys_time);
	359	dst->ctx = le64_to_cpu(src->ctx);
	360	dst->minf = le64_to_cpu(src->minf);
	361	dst->majf = le64_to_cpu(src->majf);
	362	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	363
	364	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	365	fio_fp64_t *fps = &src->percentile_list[i];
	366	fio_fp64_t *fpd = &dst->percentile_list[i];
	367
	368	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	369	}
a64e88da JA	370
	371	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	372	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	373	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	374	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	375	}
	376
	377	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	378	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	379	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	380	}
	381
	382	for (i = 0; i < 2; i++)
	383	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	384	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	385
	386	for (i = 0; i < 3; i++) {
	387	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	388	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	389	}
	390
	391	dst->total_submit = le64_to_cpu(src->total_submit);
	392	dst->total_complete = le64_to_cpu(src->total_complete);
	393
	394	for (i = 0; i < 2; i++) {
	395	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	396	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	397	}
	398
	399	dst->total_run_time = le64_to_cpu(src->total_run_time);
	400	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	401	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	402	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	403	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	404	}
	405
	406	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	407	{
	408	int i;
	409
	410	for (i = 0; i < 2; i++) {
	411	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	412	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	413	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	414	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	415	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	416	dst->agg[i] = le64_to_cpu(src->agg[i]);
	417	}
	418
	419	dst->kb_base = le32_to_cpu(src->kb_base);
	420	dst->groupid = le32_to_cpu(src->groupid);
	421	}
	422
	423	static void handle_ts(struct fio_net_cmd *cmd)
	424	{
	425	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	426
	427	convert_ts(&p->ts, &p->ts);
	428	convert_gs(&p->rs, &p->rs);
	429
	430	show_thread_status(&p->ts, &p->rs);
	431	}
	432
	433	static void handle_gs(struct fio_net_cmd *cmd)
	434	{
	435	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	436
	437	convert_gs(gs, gs);
	438	show_group_stats(gs);
	439	}
	440
cf451d1e JA	441	static void handle_eta(struct fio_net_cmd *cmd)
	442	{
	443	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	444	int i;
	445
	446	je->nr_running = le32_to_cpu(je->nr_running);
	447	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	448	je->nr_pending = le32_to_cpu(je->nr_pending);
	449	je->files_open = le32_to_cpu(je->files_open);
	450	je->m_rate = le32_to_cpu(je->m_rate);
	451	je->t_rate = le32_to_cpu(je->t_rate);
	452	je->m_iops = le32_to_cpu(je->m_iops);
	453	je->t_iops = le32_to_cpu(je->t_iops);
	454
	455	for (i = 0; i < 2; i++) {
	456	je->rate[i] = le32_to_cpu(je->rate[i]);
	457	je->iops[i] = le32_to_cpu(je->iops[i]);
	458	}
	459
	460	je->elapsed_sec = le32_to_cpu(je->nr_running);
	461	je->eta_sec = le64_to_cpu(je->eta_sec);
	462
	463	display_thread_status(je);
	464	}
	465
2e03b4b2 JA	466	static void handle_probe(struct fio_net_cmd *cmd)
	467	{
	468	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	469
6eb24791 JA	470	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	471	probe->hostname, probe->bigendian, probe->fio_major,
	472	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	473	}
2e03b4b2 JA	474
0b8f30a5	475	static int handle_client(struct fio_client *client, int one)
37db14fe JA	476	{
37db14fe JA	477	struct fio_net_cmd *cmd;
a450e492	478	int done = 0;
37db14fe	479
60efd14e JA	480	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	481
70e0c316	482	while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
46c48f1f JA	483	dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
	484	cmd->opcode);
	485
a64e88da	486	switch (cmd->opcode) {
a64e88da	487	case FIO_NET_CMD_QUIT:
b66570dc	488	remove_client(client);
437377e1	489	free(cmd);
a450e492	490	done = 1;
437377e1	491	break;
17dd1764 JA	492	case FIO_NET_CMD_TEXT: {
	493	const char buf = (const char ) cmd->payload;
	494
	495	if (!client->skip_newline)
	496	fprintf(f_out, "Client <%s>: ", client->hostname);
	497	fwrite(buf, cmd->pdu_len, 1, f_out);
0b8f30a5	498	fflush(f_out);
17dd1764	499	client->skip_newline = strchr(buf, '\n') == NULL;
37db14fe	500	free(cmd);
a64e88da	501	break;
17dd1764	502	}
a64e88da JA	503	case FIO_NET_CMD_TS:
	504	handle_ts(cmd);
	505	free(cmd);
	506	break;
	507	case FIO_NET_CMD_GS:
	508	handle_gs(cmd);
	509	free(cmd);
	510	break;
cf451d1e JA	511	case FIO_NET_CMD_ETA:
	512	handle_eta(cmd);
	513	free(cmd);
	514	break;
2e03b4b2 JA	515	case FIO_NET_CMD_PROBE:
	516	handle_probe(cmd);
	517	free(cmd);
	518	break;
81179eec JA	519	case FIO_NET_CMD_START:
	520	client->state = Client_started;
	521	free(cmd);
	522	break;
	523	case FIO_NET_CMD_STOP:
	524	client->state = Client_stopped;
	525	free(cmd);
	526	break;
a64e88da JA	527	default:
	528	log_err("fio: unknown client op: %d\n", cmd->opcode);
	529	free(cmd);
	530	break;
37db14fe	531	}
a450e492	532
0b8f30a5	533	if (done \|\| one)
a450e492	534	break;
37db14fe JA	535	}
	536
	537	return 0;
	538	}
b66570dc JA	539
	540	int fio_handle_clients(void)
	541	{
	542	struct fio_client *client;
	543	struct flist_head *entry;
	544	struct pollfd *pfds;
82a4be1b	545	int i, ret = 0;
b66570dc JA	546
	547	pfds = malloc(nr_clients * sizeof(struct pollfd));
	548
82a4be1b JA	549	while (!exit_backend && nr_clients) {
	550	i = 0;
	551	flist_for_each(entry, &client_list) {
	552	client = flist_entry(entry, struct fio_client, list);
b66570dc	553
82a4be1b JA	554	pfds[i].fd = client->fd;
	555	pfds[i].events = POLLIN;
	556	i++;
	557	}
	558
	559	assert(i == nr_clients);
b66570dc	560
5c2857f9 JA	561	do {
	562	ret = poll(pfds, nr_clients, 100);
	563	if (ret < 0) {
	564	if (errno == EINTR)
	565	continue;
	566	log_err("fio: poll clients: %s\n", strerror(errno));
	567	break;
	568	} else if (!ret)
b66570dc	569	continue;
5c2857f9	570	} while (ret <= 0);
b66570dc JA	571
	572	for (i = 0; i < nr_clients; i++) {
	573	if (!(pfds[i].revents & POLLIN))
	574	continue;
	575
	576	client = find_client_by_fd(pfds[i].fd);
	577	if (!client) {
	578	log_err("fio: unknown client\n");
	579	continue;
	580	}
0b8f30a5	581	handle_client(client, 0);
b66570dc JA	582	}
	583	}
	584
	585	free(pfds);
b66570dc JA	586	return 0;
b66570dc JA	587	}