[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;

	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);

	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\n", client->hostname);
		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);

	memset(&client->addr, 0, sizeof(client->addr));

	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);
		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_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)
{
	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;
		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;
	}

	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 JA	31
81179eec JA	32	int state;
17dd1764	33	int skip_newline;
87aa8f19	34	int is_sock;
81179eec JA	35
	36	uint16_t argc;
	37	char **argv;
	38	};
	39
	40	enum {
5c2857f9	41	Client_created = 0,
81179eec JA	42	Client_connected = 1,
	43	Client_started = 2,
	44	Client_stopped = 3,
5c2857f9	45	Client_exited = 4,
b66570dc JA	46	};
	47
	48	static FLIST_HEAD(client_list);
b66570dc	49
3c5f57e3 JA	50	#define FIO_CLIENT_HASH_BITS 7
	51	#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
	52	#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
bebe6398	53	static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
3c5f57e3	54
e951bdc4	55	static int handle_client(struct fio_client *client);
0b8f30a5	56
bebe6398	57	static void fio_client_add_hash(struct fio_client *client)
3c5f57e3 JA	58	{
	59	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
	60
	61	bucket &= FIO_CLIENT_HASH_MASK;
bebe6398	62	flist_add(&client->hash_list, &client_hash[bucket]);
3c5f57e3 JA	63	}
3c5f57e3 JA	64
bebe6398	65	static void fio_client_remove_hash(struct fio_client *client)
3c5f57e3	66	{
bebe6398 JA	67	if (!flist_empty(&client->hash_list))
bebe6398 JA	68	flist_del_init(&client->hash_list);
3c5f57e3 JA	69	}
	70
	71	static void fio_init fio_client_hash_init(void)
	72	{
	73	int i;
	74
bebe6398 JA	75	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
bebe6398 JA	76	INIT_FLIST_HEAD(&client_hash[i]);
3c5f57e3 JA	77	}
3c5f57e3 JA	78
b66570dc JA	79	static struct fio_client *find_client_by_fd(int fd)
b66570dc JA	80	{
3c5f57e3	81	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
b66570dc JA	82	struct fio_client *client;
	83	struct flist_head *entry;
	84
bebe6398 JA	85	flist_for_each(entry, &client_hash[bucket]) {
bebe6398 JA	86	client = flist_entry(entry, struct fio_client, hash_list);
b66570dc JA	87
	88	if (client->fd == fd)
	89	return client;
	90	}
	91
	92	return NULL;
	93	}
	94
b66570dc JA	95	static void remove_client(struct fio_client *client)
b66570dc JA	96	{
39e8e016	97	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc	98	flist_del(&client->list);
3c5f57e3	99
bebe6398	100	fio_client_remove_hash(client);
81179eec	101
b66570dc	102	free(client->hostname);
81179eec JA	103	if (client->argv)
	104	free(client->argv);
	105
b66570dc	106	free(client);
3c5f57e3	107	nr_clients--;
b66570dc	108	}
132159a5	109
7a4b8240 JA	110	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	111	const char *opt)
81179eec	112	{
39e8e016 JA	113	int index;
39e8e016 JA	114
7a4b8240 JA	115	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	116	log_err("fio: max cmd line number reached.\n");
	117	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	118	return 1;
	119	}
	120
39e8e016	121	index = client->argc++;
81179eec	122	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	123	client->argv[index] = strdup(opt);
39e8e016 JA	124	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	125	return 0;
81179eec JA	126	}
81179eec JA	127
bebe6398	128	int fio_client_add_cmd_option(void cookie, const char opt)
81179eec	129	{
bebe6398	130	struct fio_client *client = cookie;
81179eec	131
bebe6398	132	if (!client \|\| !opt)
7a4b8240	133	return 0;
81179eec	134
7a4b8240	135	return __fio_client_add_cmd_option(client, opt);
81179eec JA	136	}
81179eec JA	137
bebe6398	138	int fio_client_add(const char hostname, void *cookie)
132159a5	139	{
b66570dc	140	struct fio_client *client;
132159a5	141
b66570dc	142	client = malloc(sizeof(*client));
a37f69b7	143	memset(client, 0, sizeof(*client));
81179eec	144
3c5f57e3	145	INIT_FLIST_HEAD(&client->list);
bebe6398	146	INIT_FLIST_HEAD(&client->hash_list);
3c5f57e3	147
bebe6398 JA	148	if (fio_server_parse_string(hostname, &client->hostname,
	149	&client->is_sock, &client->port,
	150	&client->addr.sin_addr))
	151	return -1;
87aa8f19	152
bebe6398	153	client->fd = -1;
3c5f57e3	154
81179eec JA	155	__fio_client_add_cmd_option(client, "fio");
81179eec JA	156
a37f69b7 JA	157	flist_add(&client->list, &client_list);
a37f69b7 JA	158	nr_clients++;
bebe6398 JA	159	dprint(FD_NET, "client: added <%s>\n", client->hostname);
	160	*cookie = client;
	161	return 0;
a37f69b7 JA	162	}
a37f69b7 JA	163
87aa8f19	164	static int fio_client_connect_ip(struct fio_client *client)
a37f69b7 JA	165	{
a37f69b7 JA	166	int fd;
132159a5	167
b66570dc	168	client->addr.sin_family = AF_INET;
bebe6398	169	client->addr.sin_port = htons(client->port);
132159a5 JA	170
	171	fd = socket(AF_INET, SOCK_STREAM, 0);
	172	if (fd < 0) {
	173	log_err("fio: socket: %s\n", strerror(errno));
87aa8f19	174	return -1;
132159a5 JA	175	}
132159a5 JA	176
b66570dc	177	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	178	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	179	log_err("fio: failed to connect to %s\n", client->hostname);
b94cba47	180	close(fd);
87aa8f19 JA	181	return -1;
	182	}
	183
	184	return fd;
	185	}
	186
	187	static int fio_client_connect_sock(struct fio_client *client)
	188	{
	189	struct sockaddr_un *addr = &client->addr_un;
	190	fio_socklen_t len;
	191	int fd;
	192
	193	memset(addr, 0, sizeof(*addr));
	194	addr->sun_family = AF_UNIX;
	195	strcpy(addr->sun_path, client->hostname);
	196
	197	fd = socket(AF_UNIX, SOCK_STREAM, 0);
	198	if (fd < 0) {
	199	log_err("fio: socket: %s\n", strerror(errno));
	200	return -1;
	201	}
	202
	203	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	204	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
	205	log_err("fio: connect; %s\n", strerror(errno));
b94cba47	206	close(fd);
87aa8f19	207	return -1;
132159a5 JA	208	}
132159a5 JA	209
87aa8f19 JA	210	return fd;
	211	}
	212
	213	static int fio_client_connect(struct fio_client *client)
	214	{
	215	int fd;
	216
	217	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
	218
	219	memset(&client->addr, 0, sizeof(client->addr));
	220
	221	if (client->is_sock)
	222	fd = fio_client_connect_sock(client);
	223	else
	224	fd = fio_client_connect_ip(client);
	225
	226	if (fd < 0)
	227	return 1;
	228
b66570dc	229	client->fd = fd;
bebe6398	230	fio_client_add_hash(client);
81179eec	231	client->state = Client_connected;
132159a5 JA	232	return 0;
	233	}
	234
cc0df00a JA	235	void fio_clients_terminate(void)
	236	{
	237	struct flist_head *entry;
	238	struct fio_client *client;
	239
60efd14e JA	240	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	241
cc0df00a JA	242	flist_for_each(entry, &client_list) {
	243	client = flist_entry(entry, struct fio_client, list);
	244
	245	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	246	}
	247	}
	248
	249	static void sig_int(int sig)
	250	{
bebe6398	251	dprint(FD_NET, "client: got signal %d\n", sig);
cc0df00a JA	252	fio_clients_terminate();
	253	}
	254
	255	static void client_signal_handler(void)
	256	{
	257	struct sigaction act;
	258
	259	memset(&act, 0, sizeof(act));
	260	act.sa_handler = sig_int;
	261	act.sa_flags = SA_RESTART;
	262	sigaction(SIGINT, &act, NULL);
	263
	264	memset(&act, 0, sizeof(act));
	265	act.sa_handler = sig_int;
	266	act.sa_flags = SA_RESTART;
	267	sigaction(SIGTERM, &act, NULL);
	268	}
	269
0b8f30a5 JA	270	static void probe_client(struct fio_client *client)
0b8f30a5 JA	271	{
60efd14e JA	272	dprint(FD_NET, "client: send probe\n");
60efd14e JA	273
0b8f30a5	274	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	275	handle_client(client);
0b8f30a5 JA	276	}
0b8f30a5 JA	277
81179eec JA	278	static int send_client_cmd_line(struct fio_client *client)
	279	{
	280	struct cmd_line_pdu *pdu;
	281	int i, ret;
	282
39e8e016	283	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	284
81179eec JA	285	pdu = malloc(sizeof(*pdu));
	286	for (i = 0; i < client->argc; i++)
	287	strcpy((char *) pdu->argv[i], client->argv[i]);
	288
	289	pdu->argc = cpu_to_le16(client->argc);
	290	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	291	free(pdu);
	292	return ret;
	293	}
	294
a37f69b7 JA	295	int fio_clients_connect(void)
	296	{
	297	struct fio_client *client;
	298	struct flist_head entry, tmp;
	299	int ret;
	300
60efd14e JA	301	dprint(FD_NET, "client: connect all\n");
60efd14e JA	302
cc0df00a JA	303	client_signal_handler();
cc0df00a JA	304
a37f69b7 JA	305	flist_for_each_safe(entry, tmp, &client_list) {
	306	client = flist_entry(entry, struct fio_client, list);
	307
	308	ret = fio_client_connect(client);
0b8f30a5	309	if (ret) {
a37f69b7	310	remove_client(client);
0b8f30a5 JA	311	continue;
	312	}
	313
	314	probe_client(client);
81179eec JA	315
	316	if (client->argc > 1)
	317	send_client_cmd_line(client);
a37f69b7 JA	318	}
	319
	320	return !nr_clients;
	321	}
	322
132159a5 JA	323	/*
	324	* Send file contents to server backend. We could use sendfile(), but to remain
	325	* more portable lets just read/write the darn thing.
	326	*/
a37f69b7	327	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	328	{
	329	struct stat sb;
	330	char p, buf;
	331	off_t len;
	332	int fd, ret;
	333
46c48f1f JA	334	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	335
132159a5 JA	336	fd = open(filename, O_RDONLY);
132159a5 JA	337	if (fd < 0) {
e951bdc4	338	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	339	return 1;
	340	}
	341
	342	if (fstat(fd, &sb) < 0) {
	343	log_err("fio: job file stat: %s\n", strerror(errno));
b94cba47	344	close(fd);
132159a5 JA	345	return 1;
	346	}
	347
	348	buf = malloc(sb.st_size);
	349
	350	len = sb.st_size;
	351	p = buf;
	352	do {
	353	ret = read(fd, p, len);
	354	if (ret > 0) {
	355	len -= ret;
	356	if (!len)
	357	break;
	358	p += ret;
	359	continue;
	360	} else if (!ret)
	361	break;
	362	else if (errno == EAGAIN \|\| errno == EINTR)
	363	continue;
	364	} while (1);
	365
0b8f30a5 JA	366	if (len) {
0b8f30a5 JA	367	log_err("fio: failed reading job file %s\n", filename);
b94cba47	368	close(fd);
0b8f30a5 JA	369	return 1;
	370	}
	371
81179eec	372	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5	373	free(buf);
b94cba47	374	close(fd);
132159a5 JA	375	return ret;
132159a5 JA	376	}
37db14fe	377
a37f69b7 JA	378	int fio_clients_send_ini(const char *filename)
	379	{
	380	struct fio_client *client;
	381	struct flist_head entry, tmp;
	382
	383	flist_for_each_safe(entry, tmp, &client_list) {
	384	client = flist_entry(entry, struct fio_client, list);
	385
	386	if (fio_client_send_ini(client, filename))
	387	remove_client(client);
	388	}
	389
	390	return !nr_clients;
	391	}
	392
a64e88da JA	393	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	394	{
	395	dst->max_val = le64_to_cpu(src->max_val);
	396	dst->min_val = le64_to_cpu(src->min_val);
	397	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	398
	399	/*
	400	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	401	*/
	402	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	403	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	404	}
	405
	406	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	407	{
	408	int i, j;
	409
	410	dst->error = le32_to_cpu(src->error);
	411	dst->groupid = le32_to_cpu(src->groupid);
	412	dst->pid = le32_to_cpu(src->pid);
	413	dst->members = le32_to_cpu(src->members);
	414
	415	for (i = 0; i < 2; i++) {
	416	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	417	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	418	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	419	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	420	}
	421
	422	dst->usr_time = le64_to_cpu(src->usr_time);
	423	dst->sys_time = le64_to_cpu(src->sys_time);
	424	dst->ctx = le64_to_cpu(src->ctx);
	425	dst->minf = le64_to_cpu(src->minf);
	426	dst->majf = le64_to_cpu(src->majf);
	427	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	428
	429	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	430	fio_fp64_t *fps = &src->percentile_list[i];
	431	fio_fp64_t *fpd = &dst->percentile_list[i];
	432
	433	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	434	}
a64e88da JA	435
	436	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	437	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	438	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	439	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	440	}
	441
	442	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	443	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	444	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	445	}
	446
	447	for (i = 0; i < 2; i++)
	448	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	449	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	450
	451	for (i = 0; i < 3; i++) {
	452	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	453	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	454	}
	455
	456	dst->total_submit = le64_to_cpu(src->total_submit);
	457	dst->total_complete = le64_to_cpu(src->total_complete);
	458
	459	for (i = 0; i < 2; i++) {
	460	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	461	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	462	}
	463
	464	dst->total_run_time = le64_to_cpu(src->total_run_time);
	465	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	466	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	467	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	468	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	469	}
	470
	471	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	472	{
	473	int i;
	474
	475	for (i = 0; i < 2; i++) {
	476	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	477	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	478	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	479	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	480	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	481	dst->agg[i] = le64_to_cpu(src->agg[i]);
	482	}
	483
	484	dst->kb_base = le32_to_cpu(src->kb_base);
	485	dst->groupid = le32_to_cpu(src->groupid);
	486	}
	487
	488	static void handle_ts(struct fio_net_cmd *cmd)
	489	{
	490	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	491
	492	convert_ts(&p->ts, &p->ts);
	493	convert_gs(&p->rs, &p->rs);
	494
	495	show_thread_status(&p->ts, &p->rs);
	496	}
	497
	498	static void handle_gs(struct fio_net_cmd *cmd)
	499	{
	500	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	501
	502	convert_gs(gs, gs);
	503	show_group_stats(gs);
	504	}
	505
cf451d1e JA	506	static void handle_eta(struct fio_net_cmd *cmd)
	507	{
	508	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	509	int i;
	510
	511	je->nr_running = le32_to_cpu(je->nr_running);
	512	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	513	je->nr_pending = le32_to_cpu(je->nr_pending);
	514	je->files_open = le32_to_cpu(je->files_open);
	515	je->m_rate = le32_to_cpu(je->m_rate);
	516	je->t_rate = le32_to_cpu(je->t_rate);
	517	je->m_iops = le32_to_cpu(je->m_iops);
	518	je->t_iops = le32_to_cpu(je->t_iops);
	519
	520	for (i = 0; i < 2; i++) {
	521	je->rate[i] = le32_to_cpu(je->rate[i]);
	522	je->iops[i] = le32_to_cpu(je->iops[i]);
	523	}
	524
	525	je->elapsed_sec = le32_to_cpu(je->nr_running);
	526	je->eta_sec = le64_to_cpu(je->eta_sec);
	527
	528	display_thread_status(je);
	529	}
	530
2e03b4b2 JA	531	static void handle_probe(struct fio_net_cmd *cmd)
	532	{
	533	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	534
6eb24791 JA	535	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	536	probe->hostname, probe->bigendian, probe->fio_major,
	537	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	538	}
2e03b4b2 JA	539
e951bdc4	540	static int handle_client(struct fio_client *client)
37db14fe JA	541	{
	542	struct fio_net_cmd *cmd;
	543
60efd14e JA	544	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	545
e951bdc4 JA	546	cmd = fio_net_recv_cmd(client->fd);
	547	if (!cmd)
	548	return 0;
c2c94585	549
e951bdc4	550	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	551	cmd->opcode, client->hostname);
46c48f1f	552
e951bdc4 JA	553	switch (cmd->opcode) {
	554	case FIO_NET_CMD_QUIT:
	555	remove_client(client);
	556	free(cmd);
	557	break;
	558	case FIO_NET_CMD_TEXT: {
	559	const char buf = (const char ) cmd->payload;
	560	int fio_unused ret;
	561
	562	if (!client->skip_newline)
	563	fprintf(f_out, "<%s> ", client->hostname);
	564	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	565	fflush(f_out);
	566	client->skip_newline = strchr(buf, '\n') == NULL;
	567	free(cmd);
	568	break;
37db14fe	569	}
e951bdc4 JA	570	case FIO_NET_CMD_TS:
	571	handle_ts(cmd);
	572	free(cmd);
	573	break;
	574	case FIO_NET_CMD_GS:
	575	handle_gs(cmd);
	576	free(cmd);
	577	break;
	578	case FIO_NET_CMD_ETA:
	579	handle_eta(cmd);
	580	free(cmd);
	581	break;
	582	case FIO_NET_CMD_PROBE:
	583	handle_probe(cmd);
	584	free(cmd);
	585	break;
	586	case FIO_NET_CMD_START:
	587	client->state = Client_started;
	588	free(cmd);
	589	break;
	590	case FIO_NET_CMD_STOP:
	591	client->state = Client_stopped;
	592	free(cmd);
	593	break;
	594	default:
	595	log_err("fio: unknown client op: %d\n", cmd->opcode);
	596	free(cmd);
	597	break;
37db14fe JA	598	}
37db14fe JA	599
e951bdc4	600	return 1;
37db14fe	601	}
b66570dc JA	602
	603	int fio_handle_clients(void)
	604	{
	605	struct fio_client *client;
	606	struct flist_head *entry;
	607	struct pollfd *pfds;
82a4be1b	608	int i, ret = 0;
b66570dc JA	609
	610	pfds = malloc(nr_clients * sizeof(struct pollfd));
	611
82a4be1b JA	612	while (!exit_backend && nr_clients) {
	613	i = 0;
	614	flist_for_each(entry, &client_list) {
	615	client = flist_entry(entry, struct fio_client, list);
b66570dc	616
82a4be1b JA	617	pfds[i].fd = client->fd;
	618	pfds[i].events = POLLIN;
	619	i++;
	620	}
	621
	622	assert(i == nr_clients);
b66570dc	623
5c2857f9 JA	624	do {
	625	ret = poll(pfds, nr_clients, 100);
	626	if (ret < 0) {
	627	if (errno == EINTR)
	628	continue;
	629	log_err("fio: poll clients: %s\n", strerror(errno));
	630	break;
	631	} else if (!ret)
b66570dc	632	continue;
5c2857f9	633	} while (ret <= 0);
b66570dc JA	634
	635	for (i = 0; i < nr_clients; i++) {
	636	if (!(pfds[i].revents & POLLIN))
	637	continue;
	638
	639	client = find_client_by_fd(pfds[i].fd);
	640	if (!client) {
3c5f57e3	641	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	642	continue;
b66570dc JA	643	}
e951bdc4	644	if (!handle_client(client)) {
28d3ab07 JA	645	log_info("client: host=%s disconnected\n",
	646	client->hostname);
	647	remove_client(client);
	648	}
b66570dc JA	649	}
	650	}
	651
	652	free(pfds);
b66570dc JA	653	return 0;
b66570dc JA	654	}