[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);
		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_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));
		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;
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);
b94cba47	236	close(fd);
87aa8f19 JA	237	return -1;
	238	}
	239
	240	return fd;
	241	}
	242
	243	static int fio_client_connect_sock(struct fio_client *client)
	244	{
	245	struct sockaddr_un *addr = &client->addr_un;
	246	fio_socklen_t len;
	247	int fd;
	248
	249	memset(addr, 0, sizeof(*addr));
	250	addr->sun_family = AF_UNIX;
	251	strcpy(addr->sun_path, client->hostname);
	252
	253	fd = socket(AF_UNIX, SOCK_STREAM, 0);
	254	if (fd < 0) {
	255	log_err("fio: socket: %s\n", strerror(errno));
	256	return -1;
	257	}
	258
	259	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	260	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
	261	log_err("fio: connect; %s\n", strerror(errno));
b94cba47	262	close(fd);
87aa8f19	263	return -1;
132159a5 JA	264	}
132159a5 JA	265
87aa8f19 JA	266	return fd;
	267	}
	268
	269	static int fio_client_connect(struct fio_client *client)
	270	{
	271	int fd;
	272
	273	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
	274
	275	memset(&client->addr, 0, sizeof(client->addr));
	276
	277	if (client->is_sock)
	278	fd = fio_client_connect_sock(client);
	279	else
	280	fd = fio_client_connect_ip(client);
	281
	282	if (fd < 0)
	283	return 1;
	284
b66570dc	285	client->fd = fd;
3c5f57e3	286	fio_client_add_fd_hash(client);
81179eec	287	client->state = Client_connected;
132159a5 JA	288	return 0;
	289	}
	290
cc0df00a JA	291	void fio_clients_terminate(void)
	292	{
	293	struct flist_head *entry;
	294	struct fio_client *client;
	295
60efd14e JA	296	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	297
cc0df00a JA	298	flist_for_each(entry, &client_list) {
	299	client = flist_entry(entry, struct fio_client, list);
	300
	301	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	302	}
	303	}
	304
	305	static void sig_int(int sig)
	306	{
60efd14e	307	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	308	fio_clients_terminate();
	309	}
	310
	311	static void client_signal_handler(void)
	312	{
	313	struct sigaction act;
	314
	315	memset(&act, 0, sizeof(act));
	316	act.sa_handler = sig_int;
	317	act.sa_flags = SA_RESTART;
	318	sigaction(SIGINT, &act, NULL);
	319
	320	memset(&act, 0, sizeof(act));
	321	act.sa_handler = sig_int;
	322	act.sa_flags = SA_RESTART;
	323	sigaction(SIGTERM, &act, NULL);
	324	}
	325
0b8f30a5 JA	326	static void probe_client(struct fio_client *client)
0b8f30a5 JA	327	{
60efd14e JA	328	dprint(FD_NET, "client: send probe\n");
60efd14e JA	329
0b8f30a5	330	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	331	handle_client(client);
0b8f30a5 JA	332	}
0b8f30a5 JA	333
81179eec JA	334	static int send_client_cmd_line(struct fio_client *client)
	335	{
	336	struct cmd_line_pdu *pdu;
	337	int i, ret;
	338
39e8e016	339	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	340
81179eec JA	341	pdu = malloc(sizeof(*pdu));
	342	for (i = 0; i < client->argc; i++)
	343	strcpy((char *) pdu->argv[i], client->argv[i]);
	344
	345	pdu->argc = cpu_to_le16(client->argc);
	346	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	347	free(pdu);
	348	return ret;
	349	}
	350
a37f69b7 JA	351	int fio_clients_connect(void)
	352	{
	353	struct fio_client *client;
	354	struct flist_head entry, tmp;
	355	int ret;
	356
60efd14e JA	357	dprint(FD_NET, "client: connect all\n");
60efd14e JA	358
cc0df00a JA	359	client_signal_handler();
cc0df00a JA	360
a37f69b7 JA	361	flist_for_each_safe(entry, tmp, &client_list) {
	362	client = flist_entry(entry, struct fio_client, list);
	363
	364	ret = fio_client_connect(client);
0b8f30a5	365	if (ret) {
a37f69b7	366	remove_client(client);
0b8f30a5 JA	367	continue;
	368	}
	369
	370	probe_client(client);
81179eec JA	371
	372	if (client->argc > 1)
	373	send_client_cmd_line(client);
a37f69b7 JA	374	}
	375
	376	return !nr_clients;
	377	}
	378
132159a5 JA	379	/*
	380	* Send file contents to server backend. We could use sendfile(), but to remain
	381	* more portable lets just read/write the darn thing.
	382	*/
a37f69b7	383	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	384	{
	385	struct stat sb;
	386	char p, buf;
	387	off_t len;
	388	int fd, ret;
	389
46c48f1f JA	390	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	391
132159a5 JA	392	fd = open(filename, O_RDONLY);
132159a5 JA	393	if (fd < 0) {
e951bdc4	394	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	395	return 1;
	396	}
	397
	398	if (fstat(fd, &sb) < 0) {
	399	log_err("fio: job file stat: %s\n", strerror(errno));
b94cba47	400	close(fd);
132159a5 JA	401	return 1;
	402	}
	403
	404	buf = malloc(sb.st_size);
	405
	406	len = sb.st_size;
	407	p = buf;
	408	do {
	409	ret = read(fd, p, len);
	410	if (ret > 0) {
	411	len -= ret;
	412	if (!len)
	413	break;
	414	p += ret;
	415	continue;
	416	} else if (!ret)
	417	break;
	418	else if (errno == EAGAIN \|\| errno == EINTR)
	419	continue;
	420	} while (1);
	421
0b8f30a5 JA	422	if (len) {
0b8f30a5 JA	423	log_err("fio: failed reading job file %s\n", filename);
b94cba47	424	close(fd);
0b8f30a5 JA	425	return 1;
	426	}
	427
81179eec	428	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5	429	free(buf);
b94cba47	430	close(fd);
132159a5 JA	431	return ret;
132159a5 JA	432	}
37db14fe	433
a37f69b7 JA	434	int fio_clients_send_ini(const char *filename)
	435	{
	436	struct fio_client *client;
	437	struct flist_head entry, tmp;
	438
	439	flist_for_each_safe(entry, tmp, &client_list) {
	440	client = flist_entry(entry, struct fio_client, list);
	441
	442	if (fio_client_send_ini(client, filename))
	443	remove_client(client);
	444	}
	445
	446	return !nr_clients;
	447	}
	448
a64e88da JA	449	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	450	{
	451	dst->max_val = le64_to_cpu(src->max_val);
	452	dst->min_val = le64_to_cpu(src->min_val);
	453	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	454
	455	/*
	456	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	457	*/
	458	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	459	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	460	}
	461
	462	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	463	{
	464	int i, j;
	465
	466	dst->error = le32_to_cpu(src->error);
	467	dst->groupid = le32_to_cpu(src->groupid);
	468	dst->pid = le32_to_cpu(src->pid);
	469	dst->members = le32_to_cpu(src->members);
	470
	471	for (i = 0; i < 2; i++) {
	472	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	473	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	474	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	475	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	476	}
	477
	478	dst->usr_time = le64_to_cpu(src->usr_time);
	479	dst->sys_time = le64_to_cpu(src->sys_time);
	480	dst->ctx = le64_to_cpu(src->ctx);
	481	dst->minf = le64_to_cpu(src->minf);
	482	dst->majf = le64_to_cpu(src->majf);
	483	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	484
	485	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	486	fio_fp64_t *fps = &src->percentile_list[i];
	487	fio_fp64_t *fpd = &dst->percentile_list[i];
	488
	489	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	490	}
a64e88da JA	491
	492	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	493	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	494	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	495	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	496	}
	497
	498	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	499	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	500	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	501	}
	502
	503	for (i = 0; i < 2; i++)
	504	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	505	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	506
	507	for (i = 0; i < 3; i++) {
	508	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	509	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	510	}
	511
	512	dst->total_submit = le64_to_cpu(src->total_submit);
	513	dst->total_complete = le64_to_cpu(src->total_complete);
	514
	515	for (i = 0; i < 2; i++) {
	516	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	517	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	518	}
	519
	520	dst->total_run_time = le64_to_cpu(src->total_run_time);
	521	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	522	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	523	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	524	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	525	}
	526
	527	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	528	{
	529	int i;
	530
	531	for (i = 0; i < 2; i++) {
	532	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	533	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	534	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	535	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	536	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	537	dst->agg[i] = le64_to_cpu(src->agg[i]);
	538	}
	539
	540	dst->kb_base = le32_to_cpu(src->kb_base);
	541	dst->groupid = le32_to_cpu(src->groupid);
	542	}
	543
	544	static void handle_ts(struct fio_net_cmd *cmd)
	545	{
	546	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	547
	548	convert_ts(&p->ts, &p->ts);
	549	convert_gs(&p->rs, &p->rs);
	550
	551	show_thread_status(&p->ts, &p->rs);
	552	}
	553
	554	static void handle_gs(struct fio_net_cmd *cmd)
	555	{
	556	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	557
	558	convert_gs(gs, gs);
	559	show_group_stats(gs);
	560	}
	561
cf451d1e JA	562	static void handle_eta(struct fio_net_cmd *cmd)
	563	{
	564	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	565	int i;
	566
	567	je->nr_running = le32_to_cpu(je->nr_running);
	568	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	569	je->nr_pending = le32_to_cpu(je->nr_pending);
	570	je->files_open = le32_to_cpu(je->files_open);
	571	je->m_rate = le32_to_cpu(je->m_rate);
	572	je->t_rate = le32_to_cpu(je->t_rate);
	573	je->m_iops = le32_to_cpu(je->m_iops);
	574	je->t_iops = le32_to_cpu(je->t_iops);
	575
	576	for (i = 0; i < 2; i++) {
	577	je->rate[i] = le32_to_cpu(je->rate[i]);
	578	je->iops[i] = le32_to_cpu(je->iops[i]);
	579	}
	580
	581	je->elapsed_sec = le32_to_cpu(je->nr_running);
	582	je->eta_sec = le64_to_cpu(je->eta_sec);
	583
	584	display_thread_status(je);
	585	}
	586
2e03b4b2 JA	587	static void handle_probe(struct fio_net_cmd *cmd)
	588	{
	589	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	590
6eb24791 JA	591	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	592	probe->hostname, probe->bigendian, probe->fio_major,
	593	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	594	}
2e03b4b2 JA	595
e951bdc4	596	static int handle_client(struct fio_client *client)
37db14fe JA	597	{
	598	struct fio_net_cmd *cmd;
	599
60efd14e JA	600	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	601
e951bdc4 JA	602	cmd = fio_net_recv_cmd(client->fd);
	603	if (!cmd)
	604	return 0;
c2c94585	605
e951bdc4	606	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	607	cmd->opcode, client->hostname);
46c48f1f	608
e951bdc4 JA	609	switch (cmd->opcode) {
	610	case FIO_NET_CMD_QUIT:
	611	remove_client(client);
	612	free(cmd);
	613	break;
	614	case FIO_NET_CMD_TEXT: {
	615	const char buf = (const char ) cmd->payload;
	616	int fio_unused ret;
	617
	618	if (!client->skip_newline)
	619	fprintf(f_out, "<%s> ", client->hostname);
	620	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	621	fflush(f_out);
	622	client->skip_newline = strchr(buf, '\n') == NULL;
	623	free(cmd);
	624	break;
37db14fe	625	}
e951bdc4 JA	626	case FIO_NET_CMD_TS:
	627	handle_ts(cmd);
	628	free(cmd);
	629	break;
	630	case FIO_NET_CMD_GS:
	631	handle_gs(cmd);
	632	free(cmd);
	633	break;
	634	case FIO_NET_CMD_ETA:
	635	handle_eta(cmd);
	636	free(cmd);
	637	break;
	638	case FIO_NET_CMD_PROBE:
	639	handle_probe(cmd);
	640	free(cmd);
	641	break;
	642	case FIO_NET_CMD_START:
	643	client->state = Client_started;
	644	free(cmd);
	645	break;
	646	case FIO_NET_CMD_STOP:
	647	client->state = Client_stopped;
	648	free(cmd);
	649	break;
	650	default:
	651	log_err("fio: unknown client op: %d\n", cmd->opcode);
	652	free(cmd);
	653	break;
37db14fe JA	654	}
37db14fe JA	655
e951bdc4	656	return 1;
37db14fe	657	}
b66570dc JA	658
	659	int fio_handle_clients(void)
	660	{
	661	struct fio_client *client;
	662	struct flist_head *entry;
	663	struct pollfd *pfds;
82a4be1b	664	int i, ret = 0;
b66570dc JA	665
	666	pfds = malloc(nr_clients * sizeof(struct pollfd));
	667
82a4be1b JA	668	while (!exit_backend && nr_clients) {
	669	i = 0;
	670	flist_for_each(entry, &client_list) {
	671	client = flist_entry(entry, struct fio_client, list);
b66570dc	672
82a4be1b JA	673	pfds[i].fd = client->fd;
	674	pfds[i].events = POLLIN;
	675	i++;
	676	}
	677
	678	assert(i == nr_clients);
b66570dc	679
5c2857f9 JA	680	do {
	681	ret = poll(pfds, nr_clients, 100);
	682	if (ret < 0) {
	683	if (errno == EINTR)
	684	continue;
	685	log_err("fio: poll clients: %s\n", strerror(errno));
	686	break;
	687	} else if (!ret)
b66570dc	688	continue;
5c2857f9	689	} while (ret <= 0);
b66570dc JA	690
	691	for (i = 0; i < nr_clients; i++) {
	692	if (!(pfds[i].revents & POLLIN))
	693	continue;
	694
	695	client = find_client_by_fd(pfds[i].fd);
	696	if (!client) {
3c5f57e3	697	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	698	continue;
b66570dc JA	699	}
e951bdc4	700	if (!handle_client(client)) {
28d3ab07 JA	701	log_info("client: host=%s disconnected\n",
	702	client->hostname);
	703	remove_client(client);
	704	}
b66570dc JA	705	}
	706	}
	707
	708	free(pfds);
b66570dc JA	709	return 0;
b66570dc JA	710	}