[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 fd_hash_list;
	struct flist_head name_hash_list;
	struct sockaddr_in addr;
	struct sockaddr_un addr_un;
	char *hostname;
	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_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);

	if (!strncmp(hostname, "sock:", 5)) {
		client->hostname = strdup(hostname + 5);
		client->is_sock = 1;
	} else
		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_ip(struct fio_client *client)
{
	int fd;

	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;
	}

	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));
		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_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>
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;
3c5f57e3 JA	25	struct flist_head fd_hash_list;
3c5f57e3 JA	26	struct flist_head name_hash_list;
b66570dc	27	struct sockaddr_in addr;
87aa8f19	28	struct sockaddr_un addr_un;
b66570dc JA	29	char *hostname;
b66570dc JA	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)
	53	static struct flist_head client_fd_hash[FIO_CLIENT_HASH_SZ];
	54	static struct flist_head client_name_hash[FIO_CLIENT_HASH_SZ];
	55
e951bdc4	56	static int handle_client(struct fio_client *client);
0b8f30a5	57
3c5f57e3 JA	58	static void fio_client_add_fd_hash(struct fio_client *client)
	59	{
	60	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
	61
	62	bucket &= FIO_CLIENT_HASH_MASK;
	63	flist_add(&client->fd_hash_list, &client_fd_hash[bucket]);
	64	}
	65
	66	static void fio_client_remove_fd_hash(struct fio_client *client)
	67	{
	68	if (!flist_empty(&client->fd_hash_list))
	69	flist_del_init(&client->fd_hash_list);
	70	}
	71
	72	static void fio_client_add_name_hash(struct fio_client *client)
	73	{
	74	int bucket = jhash(client->hostname, strlen(client->hostname), 0);
	75
	76	bucket &= FIO_CLIENT_HASH_MASK;
	77	flist_add(&client->name_hash_list, &client_name_hash[bucket]);
	78	}
	79
	80	static void fio_client_remove_name_hash(struct fio_client *client)
	81	{
	82	if (!flist_empty(&client->name_hash_list))
	83	flist_del_init(&client->name_hash_list);
	84	}
	85
	86	static void fio_init fio_client_hash_init(void)
	87	{
	88	int i;
	89
	90	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++) {
	91	INIT_FLIST_HEAD(&client_fd_hash[i]);
	92	INIT_FLIST_HEAD(&client_name_hash[i]);
	93	}
	94	}
	95
b66570dc JA	96	static struct fio_client *find_client_by_fd(int fd)
b66570dc JA	97	{
3c5f57e3	98	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
b66570dc JA	99	struct fio_client *client;
	100	struct flist_head *entry;
	101
3c5f57e3 JA	102	flist_for_each(entry, &client_fd_hash[bucket]) {
3c5f57e3 JA	103	client = flist_entry(entry, struct fio_client, fd_hash_list);
b66570dc JA	104
	105	if (client->fd == fd)
	106	return client;
	107	}
	108
	109	return NULL;
	110	}
	111
	112	static struct fio_client find_client_by_name(const char name)
	113	{
3c5f57e3	114	int bucket = jhash(name, strlen(name), 0) & FIO_CLIENT_HASH_BITS;
b66570dc JA	115	struct fio_client *client;
	116	struct flist_head *entry;
	117
3c5f57e3 JA	118	flist_for_each(entry, &client_name_hash[bucket]) {
3c5f57e3 JA	119	client = flist_entry(entry, struct fio_client, name_hash_list);
b66570dc JA	120
	121	if (!strcmp(name, client->hostname))
	122	return client;
	123	}
	124
	125	return NULL;
	126	}
	127
	128	static void remove_client(struct fio_client *client)
	129	{
39e8e016	130	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc	131	flist_del(&client->list);
3c5f57e3 JA	132
	133	fio_client_remove_fd_hash(client);
	134	fio_client_remove_name_hash(client);
81179eec	135
b66570dc	136	free(client->hostname);
81179eec JA	137	if (client->argv)
	138	free(client->argv);
	139
b66570dc	140	free(client);
3c5f57e3	141	nr_clients--;
b66570dc	142	}
132159a5	143
7a4b8240 JA	144	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	145	const char *opt)
81179eec	146	{
39e8e016 JA	147	int index;
39e8e016 JA	148
7a4b8240 JA	149	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	150	log_err("fio: max cmd line number reached.\n");
	151	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	152	return 1;
	153	}
	154
39e8e016	155	index = client->argc++;
81179eec	156	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	157	client->argv[index] = strdup(opt);
39e8e016 JA	158	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	159	return 0;
81179eec JA	160	}
81179eec JA	161
7a4b8240	162	int fio_client_add_cmd_option(const char hostname, const char opt)
81179eec JA	163	{
	164	struct fio_client *client;
	165
	166	if (!hostname \|\| !opt)
7a4b8240	167	return 0;
81179eec JA	168
	169	client = find_client_by_name(hostname);
	170	if (!client) {
	171	log_err("fio: unknown client %s\n", hostname);
7a4b8240	172	return 1;
81179eec JA	173	}
81179eec JA	174
7a4b8240	175	return __fio_client_add_cmd_option(client, opt);
81179eec JA	176	}
81179eec JA	177
a37f69b7	178	void fio_client_add(const char *hostname)
132159a5	179	{
b66570dc	180	struct fio_client *client;
132159a5	181
39e8e016	182	dprint(FD_NET, "client: added <%s>\n", hostname);
b66570dc	183	client = malloc(sizeof(*client));
a37f69b7	184	memset(client, 0, sizeof(*client));
81179eec	185
3c5f57e3 JA	186	INIT_FLIST_HEAD(&client->list);
	187	INIT_FLIST_HEAD(&client->fd_hash_list);
	188	INIT_FLIST_HEAD(&client->name_hash_list);
	189
87aa8f19 JA	190	if (!strncmp(hostname, "sock:", 5)) {
	191	client->hostname = strdup(hostname + 5);
	192	client->is_sock = 1;
	193	} else
	194	client->hostname = strdup(hostname);
	195
a37f69b7	196	client->fd = -1;
81179eec	197
3c5f57e3 JA	198	fio_client_add_name_hash(client);
3c5f57e3 JA	199
81179eec JA	200	__fio_client_add_cmd_option(client, "fio");
81179eec JA	201
a37f69b7 JA	202	flist_add(&client->list, &client_list);
	203	nr_clients++;
	204	}
	205
87aa8f19	206	static int fio_client_connect_ip(struct fio_client *client)
a37f69b7 JA	207	{
a37f69b7 JA	208	int fd;
132159a5	209
b66570dc JA	210	client->addr.sin_family = AF_INET;
	211	client->addr.sin_port = htons(fio_net_port);
	212
a37f69b7	213	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	214	struct hostent *hent;
132159a5 JA	215
a37f69b7	216	hent = gethostbyname(client->hostname);
132159a5 JA	217	if (!hent) {
132159a5 JA	218	log_err("fio: gethostbyname: %s\n", strerror(errno));
e951bdc4 JA	219	log_err("fio: failed looking up hostname %s\n",
e951bdc4 JA	220	client->hostname);
87aa8f19	221	return -1;
132159a5 JA	222	}
132159a5 JA	223
b66570dc	224	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	225	}
	226
	227	fd = socket(AF_INET, SOCK_STREAM, 0);
	228	if (fd < 0) {
	229	log_err("fio: socket: %s\n", strerror(errno));
87aa8f19	230	return -1;
132159a5 JA	231	}
132159a5 JA	232
b66570dc	233	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	234	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	235	log_err("fio: failed to connect to %s\n", client->hostname);
87aa8f19 JA	236	return -1;
	237	}
	238
	239	return fd;
	240	}
	241
	242	static int fio_client_connect_sock(struct fio_client *client)
	243	{
	244	struct sockaddr_un *addr = &client->addr_un;
	245	fio_socklen_t len;
	246	int fd;
	247
	248	memset(addr, 0, sizeof(*addr));
	249	addr->sun_family = AF_UNIX;
	250	strcpy(addr->sun_path, client->hostname);
	251
	252	fd = socket(AF_UNIX, SOCK_STREAM, 0);
	253	if (fd < 0) {
	254	log_err("fio: socket: %s\n", strerror(errno));
	255	return -1;
	256	}
	257
	258	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	259	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
	260	log_err("fio: connect; %s\n", strerror(errno));
	261	return -1;
132159a5 JA	262	}
132159a5 JA	263
87aa8f19 JA	264	return fd;
	265	}
	266
	267	static int fio_client_connect(struct fio_client *client)
	268	{
	269	int fd;
	270
	271	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
	272
	273	memset(&client->addr, 0, sizeof(client->addr));
	274
	275	if (client->is_sock)
	276	fd = fio_client_connect_sock(client);
	277	else
	278	fd = fio_client_connect_ip(client);
	279
	280	if (fd < 0)
	281	return 1;
	282
b66570dc	283	client->fd = fd;
3c5f57e3	284	fio_client_add_fd_hash(client);
81179eec	285	client->state = Client_connected;
132159a5 JA	286	return 0;
	287	}
	288
cc0df00a JA	289	void fio_clients_terminate(void)
	290	{
	291	struct flist_head *entry;
	292	struct fio_client *client;
	293
60efd14e JA	294	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	295
cc0df00a JA	296	flist_for_each(entry, &client_list) {
	297	client = flist_entry(entry, struct fio_client, list);
	298
	299	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	300	}
	301	}
	302
	303	static void sig_int(int sig)
	304	{
60efd14e	305	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	306	fio_clients_terminate();
	307	}
	308
	309	static void client_signal_handler(void)
	310	{
	311	struct sigaction act;
	312
	313	memset(&act, 0, sizeof(act));
	314	act.sa_handler = sig_int;
	315	act.sa_flags = SA_RESTART;
	316	sigaction(SIGINT, &act, NULL);
	317
	318	memset(&act, 0, sizeof(act));
	319	act.sa_handler = sig_int;
	320	act.sa_flags = SA_RESTART;
	321	sigaction(SIGTERM, &act, NULL);
	322	}
	323
0b8f30a5 JA	324	static void probe_client(struct fio_client *client)
0b8f30a5 JA	325	{
60efd14e JA	326	dprint(FD_NET, "client: send probe\n");
60efd14e JA	327
0b8f30a5	328	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	329	handle_client(client);
0b8f30a5 JA	330	}
0b8f30a5 JA	331
81179eec JA	332	static int send_client_cmd_line(struct fio_client *client)
	333	{
	334	struct cmd_line_pdu *pdu;
	335	int i, ret;
	336
39e8e016	337	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	338
81179eec JA	339	pdu = malloc(sizeof(*pdu));
	340	for (i = 0; i < client->argc; i++)
	341	strcpy((char *) pdu->argv[i], client->argv[i]);
	342
	343	pdu->argc = cpu_to_le16(client->argc);
	344	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	345	free(pdu);
	346	return ret;
	347	}
	348
a37f69b7 JA	349	int fio_clients_connect(void)
	350	{
	351	struct fio_client *client;
	352	struct flist_head entry, tmp;
	353	int ret;
	354
60efd14e JA	355	dprint(FD_NET, "client: connect all\n");
60efd14e JA	356
cc0df00a JA	357	client_signal_handler();
cc0df00a JA	358
a37f69b7 JA	359	flist_for_each_safe(entry, tmp, &client_list) {
	360	client = flist_entry(entry, struct fio_client, list);
	361
	362	ret = fio_client_connect(client);
0b8f30a5	363	if (ret) {
a37f69b7	364	remove_client(client);
0b8f30a5 JA	365	continue;
	366	}
	367
	368	probe_client(client);
81179eec JA	369
	370	if (client->argc > 1)
	371	send_client_cmd_line(client);
a37f69b7 JA	372	}
	373
	374	return !nr_clients;
	375	}
	376
132159a5 JA	377	/*
	378	* Send file contents to server backend. We could use sendfile(), but to remain
	379	* more portable lets just read/write the darn thing.
	380	*/
a37f69b7	381	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	382	{
	383	struct stat sb;
	384	char p, buf;
	385	off_t len;
	386	int fd, ret;
	387
46c48f1f JA	388	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	389
132159a5 JA	390	fd = open(filename, O_RDONLY);
132159a5 JA	391	if (fd < 0) {
e951bdc4	392	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	393	return 1;
	394	}
	395
	396	if (fstat(fd, &sb) < 0) {
	397	log_err("fio: job file stat: %s\n", strerror(errno));
	398	return 1;
	399	}
	400
	401	buf = malloc(sb.st_size);
	402
	403	len = sb.st_size;
	404	p = buf;
	405	do {
	406	ret = read(fd, p, len);
	407	if (ret > 0) {
	408	len -= ret;
	409	if (!len)
	410	break;
	411	p += ret;
	412	continue;
	413	} else if (!ret)
	414	break;
	415	else if (errno == EAGAIN \|\| errno == EINTR)
	416	continue;
	417	} while (1);
	418
0b8f30a5 JA	419	if (len) {
	420	log_err("fio: failed reading job file %s\n", filename);
	421	return 1;
	422	}
	423
81179eec	424	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	425	free(buf);
	426	return ret;
	427	}
37db14fe	428
a37f69b7 JA	429	int fio_clients_send_ini(const char *filename)
	430	{
	431	struct fio_client *client;
	432	struct flist_head entry, tmp;
	433
	434	flist_for_each_safe(entry, tmp, &client_list) {
	435	client = flist_entry(entry, struct fio_client, list);
	436
	437	if (fio_client_send_ini(client, filename))
	438	remove_client(client);
	439	}
	440
	441	return !nr_clients;
	442	}
	443
a64e88da JA	444	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	445	{
	446	dst->max_val = le64_to_cpu(src->max_val);
	447	dst->min_val = le64_to_cpu(src->min_val);
	448	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	449
	450	/*
	451	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	452	*/
	453	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	454	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	455	}
	456
	457	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	458	{
	459	int i, j;
	460
	461	dst->error = le32_to_cpu(src->error);
	462	dst->groupid = le32_to_cpu(src->groupid);
	463	dst->pid = le32_to_cpu(src->pid);
	464	dst->members = le32_to_cpu(src->members);
	465
	466	for (i = 0; i < 2; i++) {
	467	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	468	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	469	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	470	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	471	}
	472
	473	dst->usr_time = le64_to_cpu(src->usr_time);
	474	dst->sys_time = le64_to_cpu(src->sys_time);
	475	dst->ctx = le64_to_cpu(src->ctx);
	476	dst->minf = le64_to_cpu(src->minf);
	477	dst->majf = le64_to_cpu(src->majf);
	478	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	479
	480	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	481	fio_fp64_t *fps = &src->percentile_list[i];
	482	fio_fp64_t *fpd = &dst->percentile_list[i];
	483
	484	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	485	}
a64e88da JA	486
	487	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	488	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	489	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	490	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	491	}
	492
	493	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	494	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	495	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	496	}
	497
	498	for (i = 0; i < 2; i++)
	499	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	500	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	501
	502	for (i = 0; i < 3; i++) {
	503	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	504	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	505	}
	506
	507	dst->total_submit = le64_to_cpu(src->total_submit);
	508	dst->total_complete = le64_to_cpu(src->total_complete);
	509
	510	for (i = 0; i < 2; i++) {
	511	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	512	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	513	}
	514
	515	dst->total_run_time = le64_to_cpu(src->total_run_time);
	516	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	517	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	518	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	519	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	520	}
	521
	522	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	523	{
	524	int i;
	525
	526	for (i = 0; i < 2; i++) {
	527	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	528	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	529	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	530	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	531	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	532	dst->agg[i] = le64_to_cpu(src->agg[i]);
	533	}
	534
	535	dst->kb_base = le32_to_cpu(src->kb_base);
	536	dst->groupid = le32_to_cpu(src->groupid);
	537	}
	538
	539	static void handle_ts(struct fio_net_cmd *cmd)
	540	{
	541	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	542
	543	convert_ts(&p->ts, &p->ts);
	544	convert_gs(&p->rs, &p->rs);
	545
	546	show_thread_status(&p->ts, &p->rs);
	547	}
	548
	549	static void handle_gs(struct fio_net_cmd *cmd)
	550	{
	551	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	552
	553	convert_gs(gs, gs);
	554	show_group_stats(gs);
	555	}
	556
cf451d1e JA	557	static void handle_eta(struct fio_net_cmd *cmd)
	558	{
	559	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	560	int i;
	561
	562	je->nr_running = le32_to_cpu(je->nr_running);
	563	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	564	je->nr_pending = le32_to_cpu(je->nr_pending);
	565	je->files_open = le32_to_cpu(je->files_open);
	566	je->m_rate = le32_to_cpu(je->m_rate);
	567	je->t_rate = le32_to_cpu(je->t_rate);
	568	je->m_iops = le32_to_cpu(je->m_iops);
	569	je->t_iops = le32_to_cpu(je->t_iops);
	570
	571	for (i = 0; i < 2; i++) {
	572	je->rate[i] = le32_to_cpu(je->rate[i]);
	573	je->iops[i] = le32_to_cpu(je->iops[i]);
	574	}
	575
	576	je->elapsed_sec = le32_to_cpu(je->nr_running);
	577	je->eta_sec = le64_to_cpu(je->eta_sec);
	578
	579	display_thread_status(je);
	580	}
	581
2e03b4b2 JA	582	static void handle_probe(struct fio_net_cmd *cmd)
	583	{
	584	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	585
6eb24791 JA	586	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	587	probe->hostname, probe->bigendian, probe->fio_major,
	588	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	589	}
2e03b4b2 JA	590
e951bdc4	591	static int handle_client(struct fio_client *client)
37db14fe JA	592	{
	593	struct fio_net_cmd *cmd;
	594
60efd14e JA	595	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	596
e951bdc4 JA	597	cmd = fio_net_recv_cmd(client->fd);
	598	if (!cmd)
	599	return 0;
c2c94585	600
e951bdc4	601	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	602	cmd->opcode, client->hostname);
46c48f1f	603
e951bdc4 JA	604	switch (cmd->opcode) {
	605	case FIO_NET_CMD_QUIT:
	606	remove_client(client);
	607	free(cmd);
	608	break;
	609	case FIO_NET_CMD_TEXT: {
	610	const char buf = (const char ) cmd->payload;
	611	int fio_unused ret;
	612
	613	if (!client->skip_newline)
	614	fprintf(f_out, "<%s> ", client->hostname);
	615	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	616	fflush(f_out);
	617	client->skip_newline = strchr(buf, '\n') == NULL;
	618	free(cmd);
	619	break;
37db14fe	620	}
e951bdc4 JA	621	case FIO_NET_CMD_TS:
	622	handle_ts(cmd);
	623	free(cmd);
	624	break;
	625	case FIO_NET_CMD_GS:
	626	handle_gs(cmd);
	627	free(cmd);
	628	break;
	629	case FIO_NET_CMD_ETA:
	630	handle_eta(cmd);
	631	free(cmd);
	632	break;
	633	case FIO_NET_CMD_PROBE:
	634	handle_probe(cmd);
	635	free(cmd);
	636	break;
	637	case FIO_NET_CMD_START:
	638	client->state = Client_started;
	639	free(cmd);
	640	break;
	641	case FIO_NET_CMD_STOP:
	642	client->state = Client_stopped;
	643	free(cmd);
	644	break;
	645	default:
	646	log_err("fio: unknown client op: %d\n", cmd->opcode);
	647	free(cmd);
	648	break;
37db14fe JA	649	}
37db14fe JA	650
e951bdc4	651	return 1;
37db14fe	652	}
b66570dc JA	653
	654	int fio_handle_clients(void)
	655	{
	656	struct fio_client *client;
	657	struct flist_head *entry;
	658	struct pollfd *pfds;
82a4be1b	659	int i, ret = 0;
b66570dc JA	660
	661	pfds = malloc(nr_clients * sizeof(struct pollfd));
	662
82a4be1b JA	663	while (!exit_backend && nr_clients) {
	664	i = 0;
	665	flist_for_each(entry, &client_list) {
	666	client = flist_entry(entry, struct fio_client, list);
b66570dc	667
82a4be1b JA	668	pfds[i].fd = client->fd;
	669	pfds[i].events = POLLIN;
	670	i++;
	671	}
	672
	673	assert(i == nr_clients);
b66570dc	674
5c2857f9 JA	675	do {
	676	ret = poll(pfds, nr_clients, 100);
	677	if (ret < 0) {
	678	if (errno == EINTR)
	679	continue;
	680	log_err("fio: poll clients: %s\n", strerror(errno));
	681	break;
	682	} else if (!ret)
b66570dc	683	continue;
5c2857f9	684	} while (ret <= 0);
b66570dc JA	685
	686	for (i = 0; i < nr_clients; i++) {
	687	if (!(pfds[i].revents & POLLIN))
	688	continue;
	689
	690	client = find_client_by_fd(pfds[i].fd);
	691	if (!client) {
3c5f57e3	692	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	693	continue;
b66570dc JA	694	}
e951bdc4	695	if (!handle_client(client)) {
28d3ab07 JA	696	log_info("client: host=%s disconnected\n",
	697	client->hostname);
	698	remove_client(client);
	699	}
b66570dc JA	700	}
	701	}
	702
	703	free(pfds);
b66570dc JA	704	return 0;
b66570dc JA	705	}