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

	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
		log_err("fio: max cmd line number reached.\n");
		log_err("fio: cmd line <%s> has been ignored.\n", opt);
		return 1;
	}

	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);
	return 0;
}

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

	if (!hostname || !opt)
		return 0;

	client = find_client_by_name(hostname);
	if (!client) {
		log_err("fio: unknown client %s\n", hostname);
		return 1;
	}

	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;
			int fio_unused ret;

			if (!client->skip_newline)
				fprintf(f_out, "<%s> ", client->hostname);
			ret = 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
7a4b8240 JA	90	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	91	const char *opt)
81179eec	92	{
39e8e016 JA	93	int index;
39e8e016 JA	94
7a4b8240 JA	95	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	96	log_err("fio: max cmd line number reached.\n");
	97	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	98	return 1;
	99	}
	100
39e8e016	101	index = client->argc++;
81179eec	102	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	103	client->argv[index] = strdup(opt);
39e8e016 JA	104	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	105	return 0;
81179eec JA	106	}
81179eec JA	107
7a4b8240	108	int fio_client_add_cmd_option(const char hostname, const char opt)
81179eec JA	109	{
	110	struct fio_client *client;
	111
	112	if (!hostname \|\| !opt)
7a4b8240	113	return 0;
81179eec JA	114
	115	client = find_client_by_name(hostname);
	116	if (!client) {
	117	log_err("fio: unknown client %s\n", hostname);
7a4b8240	118	return 1;
81179eec JA	119	}
81179eec JA	120
7a4b8240	121	return __fio_client_add_cmd_option(client, opt);
81179eec JA	122	}
81179eec JA	123
a37f69b7	124	void fio_client_add(const char *hostname)
132159a5	125	{
b66570dc	126	struct fio_client *client;
132159a5	127
39e8e016	128	dprint(FD_NET, "client: added <%s>\n", hostname);
b66570dc	129	client = malloc(sizeof(*client));
a37f69b7	130	memset(client, 0, sizeof(*client));
81179eec	131
a37f69b7 JA	132	client->hostname = strdup(hostname);
a37f69b7 JA	133	client->fd = -1;
81179eec JA	134
	135	__fio_client_add_cmd_option(client, "fio");
	136
a37f69b7 JA	137	flist_add(&client->list, &client_list);
	138	nr_clients++;
	139	}
	140
	141	static int fio_client_connect(struct fio_client *client)
	142	{
	143	int fd;
132159a5	144
39e8e016	145	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
46c48f1f	146
b66570dc JA	147	memset(&client->addr, 0, sizeof(client->addr));
	148	client->addr.sin_family = AF_INET;
	149	client->addr.sin_port = htons(fio_net_port);
	150
a37f69b7	151	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	152	struct hostent *hent;
132159a5 JA	153
a37f69b7	154	hent = gethostbyname(client->hostname);
132159a5 JA	155	if (!hent) {
	156	log_err("fio: gethostbyname: %s\n", strerror(errno));
	157	return 1;
	158	}
	159
b66570dc	160	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	161	}
	162
	163	fd = socket(AF_INET, SOCK_STREAM, 0);
	164	if (fd < 0) {
	165	log_err("fio: socket: %s\n", strerror(errno));
	166	return 1;
	167	}
	168
b66570dc	169	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	170	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	171	log_err("fio: failed to connect to %s\n", client->hostname);
132159a5 JA	172	return 1;
	173	}
	174
b66570dc	175	client->fd = fd;
81179eec	176	client->state = Client_connected;
132159a5 JA	177	return 0;
	178	}
	179
cc0df00a JA	180	void fio_clients_terminate(void)
	181	{
	182	struct flist_head *entry;
	183	struct fio_client *client;
	184
60efd14e JA	185	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	186
cc0df00a JA	187	flist_for_each(entry, &client_list) {
	188	client = flist_entry(entry, struct fio_client, list);
	189
	190	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	191	}
	192	}
	193
	194	static void sig_int(int sig)
	195	{
60efd14e	196	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	197	fio_clients_terminate();
	198	}
	199
	200	static void client_signal_handler(void)
	201	{
	202	struct sigaction act;
	203
	204	memset(&act, 0, sizeof(act));
	205	act.sa_handler = sig_int;
	206	act.sa_flags = SA_RESTART;
	207	sigaction(SIGINT, &act, NULL);
	208
	209	memset(&act, 0, sizeof(act));
	210	act.sa_handler = sig_int;
	211	act.sa_flags = SA_RESTART;
	212	sigaction(SIGTERM, &act, NULL);
	213	}
	214
0b8f30a5 JA	215	static void probe_client(struct fio_client *client)
0b8f30a5 JA	216	{
60efd14e JA	217	dprint(FD_NET, "client: send probe\n");
60efd14e JA	218
0b8f30a5 JA	219	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	220	handle_client(client, 1);
	221	}
	222
81179eec JA	223	static int send_client_cmd_line(struct fio_client *client)
	224	{
	225	struct cmd_line_pdu *pdu;
	226	int i, ret;
	227
39e8e016	228	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	229
81179eec JA	230	pdu = malloc(sizeof(*pdu));
	231	for (i = 0; i < client->argc; i++)
	232	strcpy((char *) pdu->argv[i], client->argv[i]);
	233
	234	pdu->argc = cpu_to_le16(client->argc);
	235	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	236	free(pdu);
	237	return ret;
	238	}
	239
a37f69b7 JA	240	int fio_clients_connect(void)
	241	{
	242	struct fio_client *client;
	243	struct flist_head entry, tmp;
	244	int ret;
	245
60efd14e JA	246	dprint(FD_NET, "client: connect all\n");
60efd14e JA	247
cc0df00a JA	248	client_signal_handler();
cc0df00a JA	249
a37f69b7 JA	250	flist_for_each_safe(entry, tmp, &client_list) {
	251	client = flist_entry(entry, struct fio_client, list);
	252
	253	ret = fio_client_connect(client);
0b8f30a5	254	if (ret) {
a37f69b7	255	remove_client(client);
0b8f30a5 JA	256	continue;
	257	}
	258
	259	probe_client(client);
81179eec JA	260
	261	if (client->argc > 1)
	262	send_client_cmd_line(client);
a37f69b7 JA	263	}
	264
	265	return !nr_clients;
	266	}
	267
132159a5 JA	268	/*
	269	* Send file contents to server backend. We could use sendfile(), but to remain
	270	* more portable lets just read/write the darn thing.
	271	*/
a37f69b7	272	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	273	{
	274	struct stat sb;
	275	char p, buf;
	276	off_t len;
	277	int fd, ret;
	278
46c48f1f JA	279	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	280
132159a5 JA	281	fd = open(filename, O_RDONLY);
	282	if (fd < 0) {
	283	log_err("fio: job file open: %s\n", strerror(errno));
	284	return 1;
	285	}
	286
	287	if (fstat(fd, &sb) < 0) {
	288	log_err("fio: job file stat: %s\n", strerror(errno));
	289	return 1;
	290	}
	291
	292	buf = malloc(sb.st_size);
	293
	294	len = sb.st_size;
	295	p = buf;
	296	do {
	297	ret = read(fd, p, len);
	298	if (ret > 0) {
	299	len -= ret;
	300	if (!len)
	301	break;
	302	p += ret;
	303	continue;
	304	} else if (!ret)
	305	break;
	306	else if (errno == EAGAIN \|\| errno == EINTR)
	307	continue;
	308	} while (1);
	309
0b8f30a5 JA	310	if (len) {
	311	log_err("fio: failed reading job file %s\n", filename);
	312	return 1;
	313	}
	314
81179eec	315	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	316	free(buf);
	317	return ret;
	318	}
37db14fe	319
a37f69b7 JA	320	int fio_clients_send_ini(const char *filename)
	321	{
	322	struct fio_client *client;
	323	struct flist_head entry, tmp;
	324
	325	flist_for_each_safe(entry, tmp, &client_list) {
	326	client = flist_entry(entry, struct fio_client, list);
	327
	328	if (fio_client_send_ini(client, filename))
	329	remove_client(client);
	330	}
	331
	332	return !nr_clients;
	333	}
	334
a64e88da JA	335	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	336	{
	337	dst->max_val = le64_to_cpu(src->max_val);
	338	dst->min_val = le64_to_cpu(src->min_val);
	339	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	340
	341	/*
	342	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	343	*/
	344	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	345	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	346	}
	347
	348	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	349	{
	350	int i, j;
	351
	352	dst->error = le32_to_cpu(src->error);
	353	dst->groupid = le32_to_cpu(src->groupid);
	354	dst->pid = le32_to_cpu(src->pid);
	355	dst->members = le32_to_cpu(src->members);
	356
	357	for (i = 0; i < 2; i++) {
	358	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	359	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	360	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	361	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	362	}
	363
	364	dst->usr_time = le64_to_cpu(src->usr_time);
	365	dst->sys_time = le64_to_cpu(src->sys_time);
	366	dst->ctx = le64_to_cpu(src->ctx);
	367	dst->minf = le64_to_cpu(src->minf);
	368	dst->majf = le64_to_cpu(src->majf);
	369	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	370
	371	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	372	fio_fp64_t *fps = &src->percentile_list[i];
	373	fio_fp64_t *fpd = &dst->percentile_list[i];
	374
	375	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	376	}
a64e88da JA	377
	378	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	379	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	380	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	381	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	382	}
	383
	384	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	385	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	386	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	387	}
	388
	389	for (i = 0; i < 2; i++)
	390	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	391	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	392
	393	for (i = 0; i < 3; i++) {
	394	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	395	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	396	}
	397
	398	dst->total_submit = le64_to_cpu(src->total_submit);
	399	dst->total_complete = le64_to_cpu(src->total_complete);
	400
	401	for (i = 0; i < 2; i++) {
	402	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	403	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	404	}
	405
	406	dst->total_run_time = le64_to_cpu(src->total_run_time);
	407	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	408	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	409	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	410	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	411	}
	412
	413	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	414	{
	415	int i;
	416
	417	for (i = 0; i < 2; i++) {
	418	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	419	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	420	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	421	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	422	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	423	dst->agg[i] = le64_to_cpu(src->agg[i]);
	424	}
	425
	426	dst->kb_base = le32_to_cpu(src->kb_base);
	427	dst->groupid = le32_to_cpu(src->groupid);
	428	}
	429
	430	static void handle_ts(struct fio_net_cmd *cmd)
	431	{
	432	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	433
	434	convert_ts(&p->ts, &p->ts);
	435	convert_gs(&p->rs, &p->rs);
	436
	437	show_thread_status(&p->ts, &p->rs);
	438	}
	439
	440	static void handle_gs(struct fio_net_cmd *cmd)
	441	{
	442	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	443
	444	convert_gs(gs, gs);
	445	show_group_stats(gs);
	446	}
	447
cf451d1e JA	448	static void handle_eta(struct fio_net_cmd *cmd)
	449	{
	450	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	451	int i;
	452
	453	je->nr_running = le32_to_cpu(je->nr_running);
	454	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	455	je->nr_pending = le32_to_cpu(je->nr_pending);
	456	je->files_open = le32_to_cpu(je->files_open);
	457	je->m_rate = le32_to_cpu(je->m_rate);
	458	je->t_rate = le32_to_cpu(je->t_rate);
	459	je->m_iops = le32_to_cpu(je->m_iops);
	460	je->t_iops = le32_to_cpu(je->t_iops);
	461
	462	for (i = 0; i < 2; i++) {
	463	je->rate[i] = le32_to_cpu(je->rate[i]);
	464	je->iops[i] = le32_to_cpu(je->iops[i]);
	465	}
	466
	467	je->elapsed_sec = le32_to_cpu(je->nr_running);
	468	je->eta_sec = le64_to_cpu(je->eta_sec);
	469
	470	display_thread_status(je);
	471	}
	472
2e03b4b2 JA	473	static void handle_probe(struct fio_net_cmd *cmd)
	474	{
	475	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	476
6eb24791 JA	477	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	478	probe->hostname, probe->bigendian, probe->fio_major,
	479	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	480	}
2e03b4b2 JA	481
0b8f30a5	482	static int handle_client(struct fio_client *client, int one)
37db14fe JA	483	{
37db14fe JA	484	struct fio_net_cmd *cmd;
a450e492	485	int done = 0;
37db14fe	486
60efd14e JA	487	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	488
70e0c316	489	while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
46c48f1f JA	490	dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
	491	cmd->opcode);
	492
a64e88da	493	switch (cmd->opcode) {
a64e88da	494	case FIO_NET_CMD_QUIT:
b66570dc	495	remove_client(client);
437377e1	496	free(cmd);
a450e492	497	done = 1;
437377e1	498	break;
17dd1764 JA	499	case FIO_NET_CMD_TEXT: {
17dd1764 JA	500	const char buf = (const char ) cmd->payload;
1f39e555	501	int fio_unused ret;
17dd1764 JA	502
17dd1764 JA	503	if (!client->skip_newline)
9a7e10b9	504	fprintf(f_out, "<%s> ", client->hostname);
1f39e555	505	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
0b8f30a5	506	fflush(f_out);
17dd1764	507	client->skip_newline = strchr(buf, '\n') == NULL;
37db14fe	508	free(cmd);
a64e88da	509	break;
17dd1764	510	}
a64e88da JA	511	case FIO_NET_CMD_TS:
	512	handle_ts(cmd);
	513	free(cmd);
	514	break;
	515	case FIO_NET_CMD_GS:
	516	handle_gs(cmd);
	517	free(cmd);
	518	break;
cf451d1e JA	519	case FIO_NET_CMD_ETA:
	520	handle_eta(cmd);
	521	free(cmd);
	522	break;
2e03b4b2 JA	523	case FIO_NET_CMD_PROBE:
	524	handle_probe(cmd);
	525	free(cmd);
	526	break;
81179eec JA	527	case FIO_NET_CMD_START:
	528	client->state = Client_started;
	529	free(cmd);
	530	break;
	531	case FIO_NET_CMD_STOP:
	532	client->state = Client_stopped;
	533	free(cmd);
	534	break;
a64e88da JA	535	default:
	536	log_err("fio: unknown client op: %d\n", cmd->opcode);
	537	free(cmd);
	538	break;
37db14fe	539	}
a450e492	540
0b8f30a5	541	if (done \|\| one)
a450e492	542	break;
37db14fe JA	543	}
	544
	545	return 0;
	546	}
b66570dc JA	547
	548	int fio_handle_clients(void)
	549	{
	550	struct fio_client *client;
	551	struct flist_head *entry;
	552	struct pollfd *pfds;
82a4be1b	553	int i, ret = 0;
b66570dc JA	554
	555	pfds = malloc(nr_clients * sizeof(struct pollfd));
	556
82a4be1b JA	557	while (!exit_backend && nr_clients) {
	558	i = 0;
	559	flist_for_each(entry, &client_list) {
	560	client = flist_entry(entry, struct fio_client, list);
b66570dc	561
82a4be1b JA	562	pfds[i].fd = client->fd;
	563	pfds[i].events = POLLIN;
	564	i++;
	565	}
	566
	567	assert(i == nr_clients);
b66570dc	568
5c2857f9 JA	569	do {
	570	ret = poll(pfds, nr_clients, 100);
	571	if (ret < 0) {
	572	if (errno == EINTR)
	573	continue;
	574	log_err("fio: poll clients: %s\n", strerror(errno));
	575	break;
	576	} else if (!ret)
b66570dc	577	continue;
5c2857f9	578	} while (ret <= 0);
b66570dc JA	579
	580	for (i = 0; i < nr_clients; i++) {
	581	if (!(pfds[i].revents & POLLIN))
	582	continue;
	583
	584	client = find_client_by_fd(pfds[i].fd);
	585	if (!client) {
	586	log_err("fio: unknown client\n");
	587	continue;
	588	}
0b8f30a5	589	handle_client(client, 0);
b66570dc JA	590	}
	591	}
	592
	593	free(pfds);
b66570dc JA	594	return 0;
b66570dc JA	595	}