[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 <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>

#include "fio.h"
#include "server.h"
#include "flist.h"
#include "hash.h"

struct fio_client {
	struct flist_head list;
	struct flist_head hash_list;
	struct sockaddr_in addr;
	struct sockaddr_un addr_un;
	char *hostname;
	int port;
	int fd;

	char *name;

	int state;
	int skip_newline;
	int is_sock;

	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);

#define FIO_CLIENT_HASH_BITS	7
#define FIO_CLIENT_HASH_SZ	(1 << FIO_CLIENT_HASH_BITS)
#define FIO_CLIENT_HASH_MASK	(FIO_CLIENT_HASH_SZ - 1)
static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];

static int handle_client(struct fio_client *client);

static void fio_client_add_hash(struct fio_client *client)
{
	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);

	bucket &= FIO_CLIENT_HASH_MASK;
	flist_add(&client->hash_list, &client_hash[bucket]);
}

static void fio_client_remove_hash(struct fio_client *client)
{
	if (!flist_empty(&client->hash_list))
		flist_del_init(&client->hash_list);
}

static void fio_init fio_client_hash_init(void)
{
	int i;

	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
		INIT_FLIST_HEAD(&client_hash[i]);
}

static struct fio_client *find_client_by_fd(int fd)
{
	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_hash[bucket]) {
		client = flist_entry(entry, struct fio_client, hash_list);

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

	fio_client_remove_hash(client);

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

	free(client);
	nr_clients--;
}

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(void *cookie, const char *opt)
{
	struct fio_client *client = cookie;

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

	return __fio_client_add_cmd_option(client, opt);
}

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

	client = malloc(sizeof(*client));
	memset(client, 0, sizeof(*client));

	INIT_FLIST_HEAD(&client->list);
	INIT_FLIST_HEAD(&client->hash_list);

	if (fio_server_parse_string(hostname, &client->hostname,
					&client->is_sock, &client->port,
					&client->addr.sin_addr))
		return -1;

	client->fd = -1;

	__fio_client_add_cmd_option(client, "fio");

	flist_add(&client->list, &client_list);
	nr_clients++;
	dprint(FD_NET, "client: added <%s>\n", client->hostname);
	*cookie = client;
	return 0;
}

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

	client->addr.sin_family = AF_INET;
	client->addr.sin_port = htons(client->port);

	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:%u\n", client->hostname,
								client->port);
		close(fd);
		return -1;
	}

	return fd;
}

static int fio_client_connect_sock(struct fio_client *client)
{
	struct sockaddr_un *addr = &client->addr_un;
	fio_socklen_t len;
	int fd;

	memset(addr, 0, sizeof(*addr));
	addr->sun_family = AF_UNIX;
	strcpy(addr->sun_path, client->hostname);

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

	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
		log_err("fio: connect; %s\n", strerror(errno));
		close(fd);
		return -1;
	}

	return fd;
}

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

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

	if (client->is_sock)
		fd = fio_client_connect_sock(client);
	else
		fd = fio_client_connect_ip(client);

	if (fd < 0)
		return 1;

	client->fd = fd;
	fio_client_add_hash(client);
	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 signal %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);
}

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 <%s> open: %s\n", filename, strerror(errno));
		return 1;
	}

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

	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
	free(buf);
	close(fd);
	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_client *client, struct fio_net_cmd *cmd)
{
	struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
	const char *os, *arch;

	os = fio_get_os_string(probe->os);
	if (!os)
		os = "unknown";

	arch = fio_get_arch_string(probe->arch);
	if (!arch)
		os = "unknown";

	log_info("hostname=%s, be=%u, os=%s, arch=%s, fio=%u.%u.%u\n",
		probe->hostname, probe->bigendian, os, arch, probe->fio_major,
		probe->fio_minor, probe->fio_patch);

	if (!client->name)
		client->name = strdup((char *) probe->hostname);
}

static int handle_client(struct fio_client *client)
{
	struct fio_net_cmd *cmd;

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

	cmd = fio_net_recv_cmd(client->fd);
	if (!cmd)
		return 0;

	dprint(FD_NET, "client: got cmd op %d from %s\n",
					cmd->opcode, client->hostname);

	switch (cmd->opcode) {
	case FIO_NET_CMD_QUIT:
		remove_client(client);
		free(cmd);
		break;
	case FIO_NET_CMD_TEXT: {
		const char *buf = (const char *) cmd->payload;
		const char *name;
		int fio_unused ret;

		name = client->name ? client->name : client->hostname;

		if (!client->skip_newline)
			fprintf(f_out, "<%s> ", name);
		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(client, 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;
	}

	return 1;
}

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 fd %d\n", pfds[i].fd);
				continue;
			}
			if (!handle_client(client)) {
				log_info("client: host=%s disconnected\n",
						client->hostname);
				remove_client(client);
			}
		}
	}

	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>
87aa8f19	12	#include <sys/un.h>
132159a5 JA	13	#include <netinet/in.h>
	14	#include <arpa/inet.h>
	15	#include <netdb.h>
9e22ecb0	16	#include <signal.h>
132159a5 JA	17
	18	#include "fio.h"
	19	#include "server.h"
b66570dc	20	#include "flist.h"
3c5f57e3	21	#include "hash.h"
132159a5	22
b66570dc JA	23	struct fio_client {
b66570dc JA	24	struct flist_head list;
bebe6398	25	struct flist_head hash_list;
b66570dc	26	struct sockaddr_in addr;
87aa8f19	27	struct sockaddr_un addr_un;
b66570dc	28	char *hostname;
bebe6398	29	int port;
b66570dc	30	int fd;
81179eec	31
b5296ddb JA	32	char *name;
b5296ddb JA	33
81179eec	34	int state;
17dd1764	35	int skip_newline;
87aa8f19	36	int is_sock;
81179eec JA	37
	38	uint16_t argc;
	39	char **argv;
	40	};
	41
	42	enum {
5c2857f9	43	Client_created = 0,
81179eec JA	44	Client_connected = 1,
	45	Client_started = 2,
	46	Client_stopped = 3,
5c2857f9	47	Client_exited = 4,
b66570dc JA	48	};
	49
	50	static FLIST_HEAD(client_list);
b66570dc	51
3c5f57e3 JA	52	#define FIO_CLIENT_HASH_BITS 7
	53	#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
	54	#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
bebe6398	55	static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
3c5f57e3	56
e951bdc4	57	static int handle_client(struct fio_client *client);
0b8f30a5	58
bebe6398	59	static void fio_client_add_hash(struct fio_client *client)
3c5f57e3 JA	60	{
	61	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
	62
	63	bucket &= FIO_CLIENT_HASH_MASK;
bebe6398	64	flist_add(&client->hash_list, &client_hash[bucket]);
3c5f57e3 JA	65	}
3c5f57e3 JA	66
bebe6398	67	static void fio_client_remove_hash(struct fio_client *client)
3c5f57e3	68	{
bebe6398 JA	69	if (!flist_empty(&client->hash_list))
bebe6398 JA	70	flist_del_init(&client->hash_list);
3c5f57e3 JA	71	}
	72
	73	static void fio_init fio_client_hash_init(void)
	74	{
	75	int i;
	76
bebe6398 JA	77	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
bebe6398 JA	78	INIT_FLIST_HEAD(&client_hash[i]);
3c5f57e3 JA	79	}
3c5f57e3 JA	80
b66570dc JA	81	static struct fio_client *find_client_by_fd(int fd)
b66570dc JA	82	{
3c5f57e3	83	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
b66570dc JA	84	struct fio_client *client;
	85	struct flist_head *entry;
	86
bebe6398 JA	87	flist_for_each(entry, &client_hash[bucket]) {
bebe6398 JA	88	client = flist_entry(entry, struct fio_client, hash_list);
b66570dc JA	89
	90	if (client->fd == fd)
	91	return client;
	92	}
	93
	94	return NULL;
	95	}
	96
b66570dc JA	97	static void remove_client(struct fio_client *client)
b66570dc JA	98	{
39e8e016	99	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc	100	flist_del(&client->list);
3c5f57e3	101
bebe6398	102	fio_client_remove_hash(client);
81179eec	103
b66570dc	104	free(client->hostname);
81179eec JA	105	if (client->argv)
81179eec JA	106	free(client->argv);
b5296ddb JA	107	if (client->name)
b5296ddb JA	108	free(client->name);
81179eec	109
b66570dc	110	free(client);
3c5f57e3	111	nr_clients--;
b66570dc	112	}
132159a5	113
7a4b8240 JA	114	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	115	const char *opt)
81179eec	116	{
39e8e016 JA	117	int index;
39e8e016 JA	118
7a4b8240 JA	119	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	120	log_err("fio: max cmd line number reached.\n");
	121	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	122	return 1;
	123	}
	124
39e8e016	125	index = client->argc++;
81179eec	126	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	127	client->argv[index] = strdup(opt);
39e8e016 JA	128	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	129	return 0;
81179eec JA	130	}
81179eec JA	131
bebe6398	132	int fio_client_add_cmd_option(void cookie, const char opt)
81179eec	133	{
bebe6398	134	struct fio_client *client = cookie;
81179eec	135
bebe6398	136	if (!client \|\| !opt)
7a4b8240	137	return 0;
81179eec	138
7a4b8240	139	return __fio_client_add_cmd_option(client, opt);
81179eec JA	140	}
81179eec JA	141
bebe6398	142	int fio_client_add(const char hostname, void *cookie)
132159a5	143	{
b66570dc	144	struct fio_client *client;
132159a5	145
b66570dc	146	client = malloc(sizeof(*client));
a37f69b7	147	memset(client, 0, sizeof(*client));
81179eec	148
3c5f57e3	149	INIT_FLIST_HEAD(&client->list);
bebe6398	150	INIT_FLIST_HEAD(&client->hash_list);
3c5f57e3	151
bebe6398 JA	152	if (fio_server_parse_string(hostname, &client->hostname,
	153	&client->is_sock, &client->port,
	154	&client->addr.sin_addr))
	155	return -1;
87aa8f19	156
bebe6398	157	client->fd = -1;
3c5f57e3	158
81179eec JA	159	__fio_client_add_cmd_option(client, "fio");
81179eec JA	160
a37f69b7 JA	161	flist_add(&client->list, &client_list);
a37f69b7 JA	162	nr_clients++;
bebe6398 JA	163	dprint(FD_NET, "client: added <%s>\n", client->hostname);
	164	*cookie = client;
	165	return 0;
a37f69b7 JA	166	}
a37f69b7 JA	167
87aa8f19	168	static int fio_client_connect_ip(struct fio_client *client)
a37f69b7 JA	169	{
a37f69b7 JA	170	int fd;
132159a5	171
b66570dc	172	client->addr.sin_family = AF_INET;
bebe6398	173	client->addr.sin_port = htons(client->port);
132159a5 JA	174
	175	fd = socket(AF_INET, SOCK_STREAM, 0);
	176	if (fd < 0) {
	177	log_err("fio: socket: %s\n", strerror(errno));
87aa8f19	178	return -1;
132159a5 JA	179	}
132159a5 JA	180
b66570dc	181	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	182	log_err("fio: connect: %s\n", strerror(errno));
a7de0a11 JA	183	log_err("fio: failed to connect to %s:%u\n", client->hostname,
a7de0a11 JA	184	client->port);
b94cba47	185	close(fd);
87aa8f19 JA	186	return -1;
	187	}
	188
	189	return fd;
	190	}
	191
	192	static int fio_client_connect_sock(struct fio_client *client)
	193	{
	194	struct sockaddr_un *addr = &client->addr_un;
	195	fio_socklen_t len;
	196	int fd;
	197
	198	memset(addr, 0, sizeof(*addr));
	199	addr->sun_family = AF_UNIX;
	200	strcpy(addr->sun_path, client->hostname);
	201
	202	fd = socket(AF_UNIX, SOCK_STREAM, 0);
	203	if (fd < 0) {
	204	log_err("fio: socket: %s\n", strerror(errno));
	205	return -1;
	206	}
	207
	208	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	209	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
	210	log_err("fio: connect; %s\n", strerror(errno));
b94cba47	211	close(fd);
87aa8f19	212	return -1;
132159a5 JA	213	}
132159a5 JA	214
87aa8f19 JA	215	return fd;
	216	}
	217
	218	static int fio_client_connect(struct fio_client *client)
	219	{
	220	int fd;
	221
	222	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
	223
87aa8f19 JA	224	if (client->is_sock)
	225	fd = fio_client_connect_sock(client);
	226	else
	227	fd = fio_client_connect_ip(client);
	228
	229	if (fd < 0)
	230	return 1;
	231
b66570dc	232	client->fd = fd;
bebe6398	233	fio_client_add_hash(client);
81179eec	234	client->state = Client_connected;
132159a5 JA	235	return 0;
	236	}
	237
cc0df00a JA	238	void fio_clients_terminate(void)
	239	{
	240	struct flist_head *entry;
	241	struct fio_client *client;
	242
60efd14e JA	243	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	244
cc0df00a JA	245	flist_for_each(entry, &client_list) {
	246	client = flist_entry(entry, struct fio_client, list);
	247
	248	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	249	}
	250	}
	251
	252	static void sig_int(int sig)
	253	{
bebe6398	254	dprint(FD_NET, "client: got signal %d\n", sig);
cc0df00a JA	255	fio_clients_terminate();
	256	}
	257
	258	static void client_signal_handler(void)
	259	{
	260	struct sigaction act;
	261
	262	memset(&act, 0, sizeof(act));
	263	act.sa_handler = sig_int;
	264	act.sa_flags = SA_RESTART;
	265	sigaction(SIGINT, &act, NULL);
	266
	267	memset(&act, 0, sizeof(act));
	268	act.sa_handler = sig_int;
	269	act.sa_flags = SA_RESTART;
	270	sigaction(SIGTERM, &act, NULL);
	271	}
	272
0b8f30a5 JA	273	static void probe_client(struct fio_client *client)
0b8f30a5 JA	274	{
60efd14e JA	275	dprint(FD_NET, "client: send probe\n");
60efd14e JA	276
0b8f30a5	277	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	278	handle_client(client);
0b8f30a5 JA	279	}
0b8f30a5 JA	280
81179eec JA	281	static int send_client_cmd_line(struct fio_client *client)
	282	{
	283	struct cmd_line_pdu *pdu;
	284	int i, ret;
	285
39e8e016	286	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	287
81179eec JA	288	pdu = malloc(sizeof(*pdu));
	289	for (i = 0; i < client->argc; i++)
	290	strcpy((char *) pdu->argv[i], client->argv[i]);
	291
	292	pdu->argc = cpu_to_le16(client->argc);
	293	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	294	free(pdu);
	295	return ret;
	296	}
	297
a37f69b7 JA	298	int fio_clients_connect(void)
	299	{
	300	struct fio_client *client;
	301	struct flist_head entry, tmp;
	302	int ret;
	303
60efd14e JA	304	dprint(FD_NET, "client: connect all\n");
60efd14e JA	305
cc0df00a JA	306	client_signal_handler();
cc0df00a JA	307
a37f69b7 JA	308	flist_for_each_safe(entry, tmp, &client_list) {
	309	client = flist_entry(entry, struct fio_client, list);
	310
	311	ret = fio_client_connect(client);
0b8f30a5	312	if (ret) {
a37f69b7	313	remove_client(client);
0b8f30a5 JA	314	continue;
	315	}
	316
	317	probe_client(client);
81179eec JA	318
	319	if (client->argc > 1)
	320	send_client_cmd_line(client);
a37f69b7 JA	321	}
	322
	323	return !nr_clients;
	324	}
	325
132159a5 JA	326	/*
	327	* Send file contents to server backend. We could use sendfile(), but to remain
	328	* more portable lets just read/write the darn thing.
	329	*/
a37f69b7	330	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	331	{
	332	struct stat sb;
	333	char p, buf;
	334	off_t len;
	335	int fd, ret;
	336
46c48f1f JA	337	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	338
132159a5 JA	339	fd = open(filename, O_RDONLY);
132159a5 JA	340	if (fd < 0) {
e951bdc4	341	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	342	return 1;
	343	}
	344
	345	if (fstat(fd, &sb) < 0) {
	346	log_err("fio: job file stat: %s\n", strerror(errno));
b94cba47	347	close(fd);
132159a5 JA	348	return 1;
	349	}
	350
	351	buf = malloc(sb.st_size);
	352
	353	len = sb.st_size;
	354	p = buf;
	355	do {
	356	ret = read(fd, p, len);
	357	if (ret > 0) {
	358	len -= ret;
	359	if (!len)
	360	break;
	361	p += ret;
	362	continue;
	363	} else if (!ret)
	364	break;
	365	else if (errno == EAGAIN \|\| errno == EINTR)
	366	continue;
	367	} while (1);
	368
0b8f30a5 JA	369	if (len) {
0b8f30a5 JA	370	log_err("fio: failed reading job file %s\n", filename);
b94cba47	371	close(fd);
c524ef72	372	free(buf);
0b8f30a5 JA	373	return 1;
	374	}
	375
81179eec	376	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5	377	free(buf);
b94cba47	378	close(fd);
132159a5 JA	379	return ret;
132159a5 JA	380	}
37db14fe	381
a37f69b7 JA	382	int fio_clients_send_ini(const char *filename)
	383	{
	384	struct fio_client *client;
	385	struct flist_head entry, tmp;
	386
	387	flist_for_each_safe(entry, tmp, &client_list) {
	388	client = flist_entry(entry, struct fio_client, list);
	389
	390	if (fio_client_send_ini(client, filename))
	391	remove_client(client);
	392	}
	393
	394	return !nr_clients;
	395	}
	396
a64e88da JA	397	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	398	{
	399	dst->max_val = le64_to_cpu(src->max_val);
	400	dst->min_val = le64_to_cpu(src->min_val);
	401	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	402
	403	/*
	404	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	405	*/
	406	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	407	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	408	}
	409
	410	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	411	{
	412	int i, j;
	413
	414	dst->error = le32_to_cpu(src->error);
	415	dst->groupid = le32_to_cpu(src->groupid);
	416	dst->pid = le32_to_cpu(src->pid);
	417	dst->members = le32_to_cpu(src->members);
	418
	419	for (i = 0; i < 2; i++) {
	420	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	421	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	422	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	423	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	424	}
	425
	426	dst->usr_time = le64_to_cpu(src->usr_time);
	427	dst->sys_time = le64_to_cpu(src->sys_time);
	428	dst->ctx = le64_to_cpu(src->ctx);
	429	dst->minf = le64_to_cpu(src->minf);
	430	dst->majf = le64_to_cpu(src->majf);
	431	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	432
	433	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	434	fio_fp64_t *fps = &src->percentile_list[i];
	435	fio_fp64_t *fpd = &dst->percentile_list[i];
	436
	437	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	438	}
a64e88da JA	439
	440	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	441	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	442	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	443	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	444	}
	445
	446	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	447	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	448	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	449	}
	450
	451	for (i = 0; i < 2; i++)
	452	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	453	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	454
	455	for (i = 0; i < 3; i++) {
	456	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	457	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	458	}
	459
	460	dst->total_submit = le64_to_cpu(src->total_submit);
	461	dst->total_complete = le64_to_cpu(src->total_complete);
	462
	463	for (i = 0; i < 2; i++) {
	464	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	465	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	466	}
	467
	468	dst->total_run_time = le64_to_cpu(src->total_run_time);
	469	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	470	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	471	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	472	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	473	}
	474
	475	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	476	{
	477	int i;
	478
	479	for (i = 0; i < 2; i++) {
	480	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	481	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	482	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	483	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	484	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	485	dst->agg[i] = le64_to_cpu(src->agg[i]);
	486	}
	487
	488	dst->kb_base = le32_to_cpu(src->kb_base);
	489	dst->groupid = le32_to_cpu(src->groupid);
	490	}
	491
	492	static void handle_ts(struct fio_net_cmd *cmd)
	493	{
	494	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	495
	496	convert_ts(&p->ts, &p->ts);
	497	convert_gs(&p->rs, &p->rs);
	498
	499	show_thread_status(&p->ts, &p->rs);
	500	}
	501
	502	static void handle_gs(struct fio_net_cmd *cmd)
	503	{
	504	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	505
	506	convert_gs(gs, gs);
	507	show_group_stats(gs);
	508	}
	509
cf451d1e JA	510	static void handle_eta(struct fio_net_cmd *cmd)
	511	{
	512	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	513	int i;
	514
	515	je->nr_running = le32_to_cpu(je->nr_running);
	516	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	517	je->nr_pending = le32_to_cpu(je->nr_pending);
	518	je->files_open = le32_to_cpu(je->files_open);
	519	je->m_rate = le32_to_cpu(je->m_rate);
	520	je->t_rate = le32_to_cpu(je->t_rate);
	521	je->m_iops = le32_to_cpu(je->m_iops);
	522	je->t_iops = le32_to_cpu(je->t_iops);
	523
	524	for (i = 0; i < 2; i++) {
	525	je->rate[i] = le32_to_cpu(je->rate[i]);
	526	je->iops[i] = le32_to_cpu(je->iops[i]);
	527	}
	528
	529	je->elapsed_sec = le32_to_cpu(je->nr_running);
	530	je->eta_sec = le64_to_cpu(je->eta_sec);
	531
	532	display_thread_status(je);
	533	}
	534
b5296ddb	535	static void handle_probe(struct fio_client client, struct fio_net_cmd cmd)
2e03b4b2 JA	536	{
2e03b4b2 JA	537	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
cca84643	538	const char os, arch;
2e03b4b2	539
cca84643 JA	540	os = fio_get_os_string(probe->os);
	541	if (!os)
	542	os = "unknown";
	543
	544	arch = fio_get_arch_string(probe->arch);
	545	if (!arch)
	546	os = "unknown";
	547
c71233ee	548	log_info("hostname=%s, be=%u, os=%s, arch=%s, fio=%u.%u.%u\n",
cca84643	549	probe->hostname, probe->bigendian, os, arch, probe->fio_major,
6eb24791	550	probe->fio_minor, probe->fio_patch);
b5296ddb JA	551
	552	if (!client->name)
	553	client->name = strdup((char *) probe->hostname);
2e03b4b2 JA	554	}
2e03b4b2 JA	555
e951bdc4	556	static int handle_client(struct fio_client *client)
37db14fe JA	557	{
	558	struct fio_net_cmd *cmd;
	559
60efd14e JA	560	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	561
e951bdc4 JA	562	cmd = fio_net_recv_cmd(client->fd);
	563	if (!cmd)
	564	return 0;
c2c94585	565
e951bdc4	566	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	567	cmd->opcode, client->hostname);
46c48f1f	568
e951bdc4 JA	569	switch (cmd->opcode) {
	570	case FIO_NET_CMD_QUIT:
	571	remove_client(client);
	572	free(cmd);
	573	break;
	574	case FIO_NET_CMD_TEXT: {
	575	const char buf = (const char ) cmd->payload;
b5296ddb	576	const char *name;
e951bdc4 JA	577	int fio_unused ret;
e951bdc4 JA	578
b5296ddb JA	579	name = client->name ? client->name : client->hostname;
b5296ddb JA	580
e951bdc4	581	if (!client->skip_newline)
b5296ddb	582	fprintf(f_out, "<%s> ", name);
e951bdc4 JA	583	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	584	fflush(f_out);
	585	client->skip_newline = strchr(buf, '\n') == NULL;
	586	free(cmd);
	587	break;
37db14fe	588	}
e951bdc4 JA	589	case FIO_NET_CMD_TS:
	590	handle_ts(cmd);
	591	free(cmd);
	592	break;
	593	case FIO_NET_CMD_GS:
	594	handle_gs(cmd);
	595	free(cmd);
	596	break;
	597	case FIO_NET_CMD_ETA:
	598	handle_eta(cmd);
	599	free(cmd);
	600	break;
	601	case FIO_NET_CMD_PROBE:
b5296ddb	602	handle_probe(client, cmd);
e951bdc4 JA	603	free(cmd);
	604	break;
	605	case FIO_NET_CMD_START:
	606	client->state = Client_started;
	607	free(cmd);
	608	break;
	609	case FIO_NET_CMD_STOP:
	610	client->state = Client_stopped;
	611	free(cmd);
	612	break;
	613	default:
	614	log_err("fio: unknown client op: %d\n", cmd->opcode);
	615	free(cmd);
	616	break;
37db14fe JA	617	}
37db14fe JA	618
e951bdc4	619	return 1;
37db14fe	620	}
b66570dc JA	621
	622	int fio_handle_clients(void)
	623	{
	624	struct fio_client *client;
	625	struct flist_head *entry;
	626	struct pollfd *pfds;
82a4be1b	627	int i, ret = 0;
b66570dc JA	628
	629	pfds = malloc(nr_clients * sizeof(struct pollfd));
	630
82a4be1b JA	631	while (!exit_backend && nr_clients) {
	632	i = 0;
	633	flist_for_each(entry, &client_list) {
	634	client = flist_entry(entry, struct fio_client, list);
b66570dc	635
82a4be1b JA	636	pfds[i].fd = client->fd;
	637	pfds[i].events = POLLIN;
	638	i++;
	639	}
	640
	641	assert(i == nr_clients);
b66570dc	642
5c2857f9 JA	643	do {
	644	ret = poll(pfds, nr_clients, 100);
	645	if (ret < 0) {
	646	if (errno == EINTR)
	647	continue;
	648	log_err("fio: poll clients: %s\n", strerror(errno));
	649	break;
	650	} else if (!ret)
b66570dc	651	continue;
5c2857f9	652	} while (ret <= 0);
b66570dc JA	653
	654	for (i = 0; i < nr_clients; i++) {
	655	if (!(pfds[i].revents & POLLIN))
	656	continue;
	657
	658	client = find_client_by_fd(pfds[i].fd);
	659	if (!client) {
3c5f57e3	660	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	661	continue;
b66570dc JA	662	}
e951bdc4	663	if (!handle_client(client)) {
28d3ab07 JA	664	log_info("client: host=%s disconnected\n",
	665	client->hostname);
	666	remove_client(client);
	667	}
b66570dc JA	668	}
	669	}
	670
	671	free(pfds);
b66570dc JA	672	return 0;
b66570dc JA	673	}