[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 "flist.h"
#include "hash.h"

struct fio_client {
	struct flist_head list;
	struct flist_head fd_hash_list;
	struct flist_head name_hash_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);

#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_fd_hash[FIO_CLIENT_HASH_SZ];
static struct flist_head client_name_hash[FIO_CLIENT_HASH_SZ];

static int handle_client(struct fio_client *client);

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

	bucket &= FIO_CLIENT_HASH_MASK;
	flist_add(&client->fd_hash_list, &client_fd_hash[bucket]);
}

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

static void fio_client_add_name_hash(struct fio_client *client)
{
	int bucket = jhash(client->hostname, strlen(client->hostname), 0);

	bucket &= FIO_CLIENT_HASH_MASK;
	flist_add(&client->name_hash_list, &client_name_hash[bucket]);
}

static void fio_client_remove_name_hash(struct fio_client *client)
{
	if (!flist_empty(&client->name_hash_list))
		flist_del_init(&client->name_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_fd_hash[i]);
		INIT_FLIST_HEAD(&client_name_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_fd_hash[bucket]) {
		client = flist_entry(entry, struct fio_client, fd_hash_list);

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

	return NULL;
}

static struct fio_client *find_client_by_name(const char *name)
{
	int bucket = jhash(name, strlen(name), 0) & FIO_CLIENT_HASH_BITS;
	struct fio_client *client;
	struct flist_head *entry;

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

	fio_client_remove_fd_hash(client);
	fio_client_remove_name_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(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));

	INIT_FLIST_HEAD(&client->list);
	INIT_FLIST_HEAD(&client->fd_hash_list);
	INIT_FLIST_HEAD(&client->name_hash_list);

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

	fio_client_add_name_hash(client);

	__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));
			log_err("fio: failed looking up hostname %s\n",
					client->hostname);
			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;
	fio_client_add_fd_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 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);
}

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));
		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)
{
	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>
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"
b66570dc	19	#include "flist.h"
3c5f57e3	20	#include "hash.h"
132159a5	21
b66570dc JA	22	struct fio_client {
b66570dc JA	23	struct flist_head list;
3c5f57e3 JA	24	struct flist_head fd_hash_list;
3c5f57e3 JA	25	struct flist_head name_hash_list;
b66570dc JA	26	struct sockaddr_in addr;
	27	char *hostname;
	28	int fd;
81179eec JA	29
81179eec JA	30	int state;
17dd1764	31	int skip_newline;
81179eec JA	32
	33	uint16_t argc;
	34	char **argv;
	35	};
	36
	37	enum {
5c2857f9	38	Client_created = 0,
81179eec JA	39	Client_connected = 1,
	40	Client_started = 2,
	41	Client_stopped = 3,
5c2857f9	42	Client_exited = 4,
b66570dc JA	43	};
	44
	45	static FLIST_HEAD(client_list);
b66570dc	46
3c5f57e3 JA	47	#define FIO_CLIENT_HASH_BITS 7
	48	#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
	49	#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
	50	static struct flist_head client_fd_hash[FIO_CLIENT_HASH_SZ];
	51	static struct flist_head client_name_hash[FIO_CLIENT_HASH_SZ];
	52
e951bdc4	53	static int handle_client(struct fio_client *client);
0b8f30a5	54
3c5f57e3 JA	55	static void fio_client_add_fd_hash(struct fio_client *client)
	56	{
	57	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
	58
	59	bucket &= FIO_CLIENT_HASH_MASK;
	60	flist_add(&client->fd_hash_list, &client_fd_hash[bucket]);
	61	}
	62
	63	static void fio_client_remove_fd_hash(struct fio_client *client)
	64	{
	65	if (!flist_empty(&client->fd_hash_list))
	66	flist_del_init(&client->fd_hash_list);
	67	}
	68
	69	static void fio_client_add_name_hash(struct fio_client *client)
	70	{
	71	int bucket = jhash(client->hostname, strlen(client->hostname), 0);
	72
	73	bucket &= FIO_CLIENT_HASH_MASK;
	74	flist_add(&client->name_hash_list, &client_name_hash[bucket]);
	75	}
	76
	77	static void fio_client_remove_name_hash(struct fio_client *client)
	78	{
	79	if (!flist_empty(&client->name_hash_list))
	80	flist_del_init(&client->name_hash_list);
	81	}
	82
	83	static void fio_init fio_client_hash_init(void)
	84	{
	85	int i;
	86
	87	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++) {
	88	INIT_FLIST_HEAD(&client_fd_hash[i]);
	89	INIT_FLIST_HEAD(&client_name_hash[i]);
	90	}
	91	}
	92
b66570dc JA	93	static struct fio_client *find_client_by_fd(int fd)
b66570dc JA	94	{
3c5f57e3	95	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
b66570dc JA	96	struct fio_client *client;
	97	struct flist_head *entry;
	98
3c5f57e3 JA	99	flist_for_each(entry, &client_fd_hash[bucket]) {
3c5f57e3 JA	100	client = flist_entry(entry, struct fio_client, fd_hash_list);
b66570dc JA	101
	102	if (client->fd == fd)
	103	return client;
	104	}
	105
	106	return NULL;
	107	}
	108
	109	static struct fio_client find_client_by_name(const char name)
	110	{
3c5f57e3	111	int bucket = jhash(name, strlen(name), 0) & FIO_CLIENT_HASH_BITS;
b66570dc JA	112	struct fio_client *client;
	113	struct flist_head *entry;
	114
3c5f57e3 JA	115	flist_for_each(entry, &client_name_hash[bucket]) {
3c5f57e3 JA	116	client = flist_entry(entry, struct fio_client, name_hash_list);
b66570dc JA	117
	118	if (!strcmp(name, client->hostname))
	119	return client;
	120	}
	121
	122	return NULL;
	123	}
	124
	125	static void remove_client(struct fio_client *client)
	126	{
39e8e016	127	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc	128	flist_del(&client->list);
3c5f57e3 JA	129
	130	fio_client_remove_fd_hash(client);
	131	fio_client_remove_name_hash(client);
81179eec	132
b66570dc	133	free(client->hostname);
81179eec JA	134	if (client->argv)
	135	free(client->argv);
	136
b66570dc	137	free(client);
3c5f57e3	138	nr_clients--;
b66570dc	139	}
132159a5	140
7a4b8240 JA	141	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	142	const char *opt)
81179eec	143	{
39e8e016 JA	144	int index;
39e8e016 JA	145
7a4b8240 JA	146	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	147	log_err("fio: max cmd line number reached.\n");
	148	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	149	return 1;
	150	}
	151
39e8e016	152	index = client->argc++;
81179eec	153	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	154	client->argv[index] = strdup(opt);
39e8e016 JA	155	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	156	return 0;
81179eec JA	157	}
81179eec JA	158
7a4b8240	159	int fio_client_add_cmd_option(const char hostname, const char opt)
81179eec JA	160	{
	161	struct fio_client *client;
	162
	163	if (!hostname \|\| !opt)
7a4b8240	164	return 0;
81179eec JA	165
	166	client = find_client_by_name(hostname);
	167	if (!client) {
	168	log_err("fio: unknown client %s\n", hostname);
7a4b8240	169	return 1;
81179eec JA	170	}
81179eec JA	171
7a4b8240	172	return __fio_client_add_cmd_option(client, opt);
81179eec JA	173	}
81179eec JA	174
a37f69b7	175	void fio_client_add(const char *hostname)
132159a5	176	{
b66570dc	177	struct fio_client *client;
132159a5	178
39e8e016	179	dprint(FD_NET, "client: added <%s>\n", hostname);
b66570dc	180	client = malloc(sizeof(*client));
a37f69b7	181	memset(client, 0, sizeof(*client));
81179eec	182
3c5f57e3 JA	183	INIT_FLIST_HEAD(&client->list);
	184	INIT_FLIST_HEAD(&client->fd_hash_list);
	185	INIT_FLIST_HEAD(&client->name_hash_list);
	186
a37f69b7 JA	187	client->hostname = strdup(hostname);
a37f69b7 JA	188	client->fd = -1;
81179eec	189
3c5f57e3 JA	190	fio_client_add_name_hash(client);
3c5f57e3 JA	191
81179eec JA	192	__fio_client_add_cmd_option(client, "fio");
81179eec JA	193
a37f69b7 JA	194	flist_add(&client->list, &client_list);
	195	nr_clients++;
	196	}
	197
	198	static int fio_client_connect(struct fio_client *client)
	199	{
	200	int fd;
132159a5	201
39e8e016	202	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
46c48f1f	203
b66570dc JA	204	memset(&client->addr, 0, sizeof(client->addr));
	205	client->addr.sin_family = AF_INET;
	206	client->addr.sin_port = htons(fio_net_port);
	207
a37f69b7	208	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	209	struct hostent *hent;
132159a5 JA	210
a37f69b7	211	hent = gethostbyname(client->hostname);
132159a5 JA	212	if (!hent) {
132159a5 JA	213	log_err("fio: gethostbyname: %s\n", strerror(errno));
e951bdc4 JA	214	log_err("fio: failed looking up hostname %s\n",
e951bdc4 JA	215	client->hostname);
132159a5 JA	216	return 1;
	217	}
	218
b66570dc	219	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	220	}
	221
	222	fd = socket(AF_INET, SOCK_STREAM, 0);
	223	if (fd < 0) {
	224	log_err("fio: socket: %s\n", strerror(errno));
	225	return 1;
	226	}
	227
b66570dc	228	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	229	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	230	log_err("fio: failed to connect to %s\n", client->hostname);
132159a5 JA	231	return 1;
	232	}
	233
b66570dc	234	client->fd = fd;
3c5f57e3	235	fio_client_add_fd_hash(client);
81179eec	236	client->state = Client_connected;
132159a5 JA	237	return 0;
	238	}
	239
cc0df00a JA	240	void fio_clients_terminate(void)
	241	{
	242	struct flist_head *entry;
	243	struct fio_client *client;
	244
60efd14e JA	245	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	246
cc0df00a JA	247	flist_for_each(entry, &client_list) {
	248	client = flist_entry(entry, struct fio_client, list);
	249
	250	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	251	}
	252	}
	253
	254	static void sig_int(int sig)
	255	{
60efd14e	256	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	257	fio_clients_terminate();
	258	}
	259
	260	static void client_signal_handler(void)
	261	{
	262	struct sigaction act;
	263
	264	memset(&act, 0, sizeof(act));
	265	act.sa_handler = sig_int;
	266	act.sa_flags = SA_RESTART;
	267	sigaction(SIGINT, &act, NULL);
	268
	269	memset(&act, 0, sizeof(act));
	270	act.sa_handler = sig_int;
	271	act.sa_flags = SA_RESTART;
	272	sigaction(SIGTERM, &act, NULL);
	273	}
	274
0b8f30a5 JA	275	static void probe_client(struct fio_client *client)
0b8f30a5 JA	276	{
60efd14e JA	277	dprint(FD_NET, "client: send probe\n");
60efd14e JA	278
0b8f30a5	279	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	280	handle_client(client);
0b8f30a5 JA	281	}
0b8f30a5 JA	282
81179eec JA	283	static int send_client_cmd_line(struct fio_client *client)
	284	{
	285	struct cmd_line_pdu *pdu;
	286	int i, ret;
	287
39e8e016	288	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	289
81179eec JA	290	pdu = malloc(sizeof(*pdu));
	291	for (i = 0; i < client->argc; i++)
	292	strcpy((char *) pdu->argv[i], client->argv[i]);
	293
	294	pdu->argc = cpu_to_le16(client->argc);
	295	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	296	free(pdu);
	297	return ret;
	298	}
	299
a37f69b7 JA	300	int fio_clients_connect(void)
	301	{
	302	struct fio_client *client;
	303	struct flist_head entry, tmp;
	304	int ret;
	305
60efd14e JA	306	dprint(FD_NET, "client: connect all\n");
60efd14e JA	307
cc0df00a JA	308	client_signal_handler();
cc0df00a JA	309
a37f69b7 JA	310	flist_for_each_safe(entry, tmp, &client_list) {
	311	client = flist_entry(entry, struct fio_client, list);
	312
	313	ret = fio_client_connect(client);
0b8f30a5	314	if (ret) {
a37f69b7	315	remove_client(client);
0b8f30a5 JA	316	continue;
	317	}
	318
	319	probe_client(client);
81179eec JA	320
	321	if (client->argc > 1)
	322	send_client_cmd_line(client);
a37f69b7 JA	323	}
	324
	325	return !nr_clients;
	326	}
	327
132159a5 JA	328	/*
	329	* Send file contents to server backend. We could use sendfile(), but to remain
	330	* more portable lets just read/write the darn thing.
	331	*/
a37f69b7	332	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	333	{
	334	struct stat sb;
	335	char p, buf;
	336	off_t len;
	337	int fd, ret;
	338
46c48f1f JA	339	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	340
132159a5 JA	341	fd = open(filename, O_RDONLY);
132159a5 JA	342	if (fd < 0) {
e951bdc4	343	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	344	return 1;
	345	}
	346
	347	if (fstat(fd, &sb) < 0) {
	348	log_err("fio: job file stat: %s\n", strerror(errno));
	349	return 1;
	350	}
	351
	352	buf = malloc(sb.st_size);
	353
	354	len = sb.st_size;
	355	p = buf;
	356	do {
	357	ret = read(fd, p, len);
	358	if (ret > 0) {
	359	len -= ret;
	360	if (!len)
	361	break;
	362	p += ret;
	363	continue;
	364	} else if (!ret)
	365	break;
	366	else if (errno == EAGAIN \|\| errno == EINTR)
	367	continue;
	368	} while (1);
	369
0b8f30a5 JA	370	if (len) {
	371	log_err("fio: failed reading job file %s\n", filename);
	372	return 1;
	373	}
	374
81179eec	375	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	376	free(buf);
	377	return ret;
	378	}
37db14fe	379
a37f69b7 JA	380	int fio_clients_send_ini(const char *filename)
	381	{
	382	struct fio_client *client;
	383	struct flist_head entry, tmp;
	384
	385	flist_for_each_safe(entry, tmp, &client_list) {
	386	client = flist_entry(entry, struct fio_client, list);
	387
	388	if (fio_client_send_ini(client, filename))
	389	remove_client(client);
	390	}
	391
	392	return !nr_clients;
	393	}
	394
a64e88da JA	395	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	396	{
	397	dst->max_val = le64_to_cpu(src->max_val);
	398	dst->min_val = le64_to_cpu(src->min_val);
	399	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	400
	401	/*
	402	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	403	*/
	404	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	405	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	406	}
	407
	408	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	409	{
	410	int i, j;
	411
	412	dst->error = le32_to_cpu(src->error);
	413	dst->groupid = le32_to_cpu(src->groupid);
	414	dst->pid = le32_to_cpu(src->pid);
	415	dst->members = le32_to_cpu(src->members);
	416
	417	for (i = 0; i < 2; i++) {
	418	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	419	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	420	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	421	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	422	}
	423
	424	dst->usr_time = le64_to_cpu(src->usr_time);
	425	dst->sys_time = le64_to_cpu(src->sys_time);
	426	dst->ctx = le64_to_cpu(src->ctx);
	427	dst->minf = le64_to_cpu(src->minf);
	428	dst->majf = le64_to_cpu(src->majf);
	429	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	430
	431	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	432	fio_fp64_t *fps = &src->percentile_list[i];
	433	fio_fp64_t *fpd = &dst->percentile_list[i];
	434
	435	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	436	}
a64e88da JA	437
	438	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	439	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	440	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	441	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	442	}
	443
	444	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	445	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	446	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	447	}
	448
	449	for (i = 0; i < 2; i++)
	450	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	451	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	452
	453	for (i = 0; i < 3; i++) {
	454	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	455	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	456	}
	457
	458	dst->total_submit = le64_to_cpu(src->total_submit);
	459	dst->total_complete = le64_to_cpu(src->total_complete);
	460
	461	for (i = 0; i < 2; i++) {
	462	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	463	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	464	}
	465
	466	dst->total_run_time = le64_to_cpu(src->total_run_time);
	467	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	468	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	469	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	470	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	471	}
	472
	473	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	474	{
	475	int i;
	476
	477	for (i = 0; i < 2; i++) {
	478	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	479	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	480	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	481	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	482	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	483	dst->agg[i] = le64_to_cpu(src->agg[i]);
	484	}
	485
	486	dst->kb_base = le32_to_cpu(src->kb_base);
	487	dst->groupid = le32_to_cpu(src->groupid);
	488	}
	489
	490	static void handle_ts(struct fio_net_cmd *cmd)
	491	{
	492	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	493
	494	convert_ts(&p->ts, &p->ts);
	495	convert_gs(&p->rs, &p->rs);
	496
	497	show_thread_status(&p->ts, &p->rs);
	498	}
	499
	500	static void handle_gs(struct fio_net_cmd *cmd)
	501	{
	502	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	503
	504	convert_gs(gs, gs);
	505	show_group_stats(gs);
	506	}
	507
cf451d1e JA	508	static void handle_eta(struct fio_net_cmd *cmd)
	509	{
	510	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	511	int i;
	512
	513	je->nr_running = le32_to_cpu(je->nr_running);
	514	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	515	je->nr_pending = le32_to_cpu(je->nr_pending);
	516	je->files_open = le32_to_cpu(je->files_open);
	517	je->m_rate = le32_to_cpu(je->m_rate);
	518	je->t_rate = le32_to_cpu(je->t_rate);
	519	je->m_iops = le32_to_cpu(je->m_iops);
	520	je->t_iops = le32_to_cpu(je->t_iops);
	521
	522	for (i = 0; i < 2; i++) {
	523	je->rate[i] = le32_to_cpu(je->rate[i]);
	524	je->iops[i] = le32_to_cpu(je->iops[i]);
	525	}
	526
	527	je->elapsed_sec = le32_to_cpu(je->nr_running);
	528	je->eta_sec = le64_to_cpu(je->eta_sec);
	529
	530	display_thread_status(je);
	531	}
	532
2e03b4b2 JA	533	static void handle_probe(struct fio_net_cmd *cmd)
	534	{
	535	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	536
6eb24791 JA	537	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	538	probe->hostname, probe->bigendian, probe->fio_major,
	539	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	540	}
2e03b4b2 JA	541
e951bdc4	542	static int handle_client(struct fio_client *client)
37db14fe JA	543	{
	544	struct fio_net_cmd *cmd;
	545
60efd14e JA	546	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	547
e951bdc4 JA	548	cmd = fio_net_recv_cmd(client->fd);
	549	if (!cmd)
	550	return 0;
c2c94585	551
e951bdc4	552	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	553	cmd->opcode, client->hostname);
46c48f1f	554
e951bdc4 JA	555	switch (cmd->opcode) {
	556	case FIO_NET_CMD_QUIT:
	557	remove_client(client);
	558	free(cmd);
	559	break;
	560	case FIO_NET_CMD_TEXT: {
	561	const char buf = (const char ) cmd->payload;
	562	int fio_unused ret;
	563
	564	if (!client->skip_newline)
	565	fprintf(f_out, "<%s> ", client->hostname);
	566	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	567	fflush(f_out);
	568	client->skip_newline = strchr(buf, '\n') == NULL;
	569	free(cmd);
	570	break;
37db14fe	571	}
e951bdc4 JA	572	case FIO_NET_CMD_TS:
	573	handle_ts(cmd);
	574	free(cmd);
	575	break;
	576	case FIO_NET_CMD_GS:
	577	handle_gs(cmd);
	578	free(cmd);
	579	break;
	580	case FIO_NET_CMD_ETA:
	581	handle_eta(cmd);
	582	free(cmd);
	583	break;
	584	case FIO_NET_CMD_PROBE:
	585	handle_probe(cmd);
	586	free(cmd);
	587	break;
	588	case FIO_NET_CMD_START:
	589	client->state = Client_started;
	590	free(cmd);
	591	break;
	592	case FIO_NET_CMD_STOP:
	593	client->state = Client_stopped;
	594	free(cmd);
	595	break;
	596	default:
	597	log_err("fio: unknown client op: %d\n", cmd->opcode);
	598	free(cmd);
	599	break;
37db14fe JA	600	}
37db14fe JA	601
e951bdc4	602	return 1;
37db14fe	603	}
b66570dc JA	604
	605	int fio_handle_clients(void)
	606	{
	607	struct fio_client *client;
	608	struct flist_head *entry;
	609	struct pollfd *pfds;
82a4be1b	610	int i, ret = 0;
b66570dc JA	611
	612	pfds = malloc(nr_clients * sizeof(struct pollfd));
	613
82a4be1b JA	614	while (!exit_backend && nr_clients) {
	615	i = 0;
	616	flist_for_each(entry, &client_list) {
	617	client = flist_entry(entry, struct fio_client, list);
b66570dc	618
82a4be1b JA	619	pfds[i].fd = client->fd;
	620	pfds[i].events = POLLIN;
	621	i++;
	622	}
	623
	624	assert(i == nr_clients);
b66570dc	625
5c2857f9 JA	626	do {
	627	ret = poll(pfds, nr_clients, 100);
	628	if (ret < 0) {
	629	if (errno == EINTR)
	630	continue;
	631	log_err("fio: poll clients: %s\n", strerror(errno));
	632	break;
	633	} else if (!ret)
b66570dc	634	continue;
5c2857f9	635	} while (ret <= 0);
b66570dc JA	636
	637	for (i = 0; i < nr_clients; i++) {
	638	if (!(pfds[i].revents & POLLIN))
	639	continue;
	640
	641	client = find_client_by_fd(pfds[i].fd);
	642	if (!client) {
3c5f57e3	643	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	644	continue;
b66570dc JA	645	}
e951bdc4	646	if (!handle_client(client)) {
28d3ab07 JA	647	log_info("client: host=%s disconnected\n",
	648	client->hostname);
	649	remove_client(client);
	650	}
b66570dc JA	651	}
	652	}
	653
	654	free(pfds);
b66570dc JA	655	return 0;
b66570dc JA	656	}