[fio.git] / engines / net.c

/*
 * Transfer data over the net. Pretty basic setup, will only support
 * 1 file per thread/job.
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

#include "../fio.h"
#include "../os.h"

struct net_data {
	int send_to_net;
	struct io_u *last_io_u;
};

static int fio_netio_getevents(struct thread_data *td, int fio_unused min,
				int max, struct timespec fio_unused *t)
{
	assert(max <= 1);

	/*
	 * we can only have one finished io_u for sync io, since the depth
	 * is always 1
	 */
	if (list_empty(&td->io_u_busylist))
		return 0;

	return 1;
}

static struct io_u *fio_netio_event(struct thread_data *td, int event)
{
	struct net_data *nd = td->io_ops->data;

	assert(event == 0);

	return nd->last_io_u;
}

static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
{
	struct net_data *nd = td->io_ops->data;
	struct fio_file *f = io_u->file;

	/*
	 * Make sure we don't see spurious reads to a receiver, and vice versa
	 */
	if ((nd->send_to_net && io_u->ddir == DDIR_READ) ||
	    (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) {
		printf("boo!\n");
		td_verror(td, EINVAL);
		return 1;
	}
		
	if (io_u->ddir == DDIR_SYNC)
		return 0;
	if (io_u->offset == f->last_completed_pos)
		return 0;

	/*
	 * If offset is different from last end position, it's a seek.
	 * As network io is purely sequential, we don't allow seeks.
	 */
	td_verror(td, EINVAL);
	return 1;
}

static int fio_netio_queue(struct thread_data *td, struct io_u *io_u)
{
	struct net_data *nd = td->io_ops->data;
	struct fio_file *f = io_u->file;
	int ret;

	if (io_u->ddir == DDIR_WRITE) {
		int flags = 0;

		/*
		 * if we are going to write more, set MSG_MORE
		 */
		if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen <
		    td->io_size)
			flags = MSG_MORE;

		ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
	} else if (io_u->ddir == DDIR_READ)
		ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, MSG_WAITALL);
	else
		ret = 0;	/* must be a SYNC */

	if (ret != (int) io_u->xfer_buflen) {
		if (ret > 0) {
			io_u->resid = io_u->xfer_buflen - ret;
			io_u->error = 0;
			return ret;
		} else
			io_u->error = errno;
	}

	if (!io_u->error)
		nd->last_io_u = io_u;

	return io_u->error;
}

static int fio_netio_setup_connect(struct thread_data *td, const char *host,
				   unsigned short port)
{
	struct sockaddr_in addr;
	struct fio_file *f;
	int i;

	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
	addr.sin_port = htons(port);

	if (inet_aton(host, &addr.sin_addr) != 1) {
		struct hostent *hent;

		hent = gethostbyname(host);
		if (!hent) {
			td_vmsg(td, errno, "gethostbyname");
			return 1;
		}

		memcpy(&addr.sin_addr, hent->h_addr, 4);
	}

	for_each_file(td, f, i) {
		f->fd = socket(AF_INET, SOCK_STREAM, 0);
		if (f->fd < 0) {
			td_vmsg(td, errno, "socket");
			return 1;
		}

		if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
			td_vmsg(td, errno, "connect");
			return 1;
		}
	}

	return 0;

}

static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
{
	struct sockaddr_in addr;
	socklen_t socklen;
	struct fio_file *f;
	int fd, opt, i;

	fd = socket(AF_INET, SOCK_STREAM, 0);
	if (fd < 0) {
		td_vmsg(td, errno, "socket");
		return 1;
	}

	opt = 1;
	if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
		td_vmsg(td, errno, "setsockopt");
		return 1;
	}

	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = htonl(INADDR_ANY);
	addr.sin_port = htons(port);

	if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		td_vmsg(td, errno, "bind");
		return 1;
	}
	if (listen(fd, 1) < 0) {
		td_vmsg(td, errno, "listen");
		return 1;
	}

	fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files);

	socklen = sizeof(addr);
	for_each_file(td, f, i) {
		f->fd = accept(fd, (struct sockaddr *) &addr, &socklen);
		if (f->fd < 0) {
			td_vmsg(td, errno, "accept");
			return 1;
		}
	}

	return 0;
}

static int fio_netio_setup(struct thread_data *td)
{
	char host[64], buf[128];
	struct net_data *nd;
	unsigned short port;
	struct fio_file *f;
	char *sep;
	int ret, i;

	if (!td->total_file_size) {
		log_err("fio: need size= set\n");
		return 1;
	}

	/*
	 * work around for late init call
	 */
	if (td->io_ops->init(td))
		return 1;

	nd = td->io_ops->data;

	if (td->iomix) {
		log_err("fio: network connections must be read OR write\n");
		return 1;
	}

	strcpy(buf, td->filename);

	sep = strchr(buf, ':');
	if (!sep) {
		log_err("fio: bad network host:port <<%s>>\n", td->filename);
		return 1;
	}

	*sep = '\0';
	sep++;
	strcpy(host, buf);
	port = atoi(sep);

	if (td->ddir == READ) {
		nd->send_to_net = 0;
		ret = fio_netio_setup_listen(td, port);
	} else {
		nd->send_to_net = 1;
		ret = fio_netio_setup_connect(td, host, port);
	}

	if (ret)
		return ret;

	td->io_size = td->total_file_size;
	td->total_io_size = td->io_size;

	for_each_file(td, f, i) {
		f->file_size = td->total_file_size / td->nr_files;
		f->real_file_size = f->file_size;
	}

	return 0;
}

static void fio_netio_cleanup(struct thread_data *td)
{
	if (td->io_ops->data) {
		free(td->io_ops->data);
		td->io_ops->data = NULL;
	}
}

static int fio_netio_init(struct thread_data *td)
{
	struct net_data *nd;

	/*
	 * Hack to work-around the ->setup() function calling init on its
	 * own, since it needs ->io_ops->data to be set up.
	 */
	if (td->io_ops->data)
		return 0;

	nd  = malloc(sizeof(*nd));
	nd->last_io_u = NULL;
	td->io_ops->data = nd;
	return 0;
}

static struct ioengine_ops ioengine = {
	.name		= "net",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_netio_init,
	.prep		= fio_netio_prep,
	.queue		= fio_netio_queue,
	.getevents	= fio_netio_getevents,
	.event		= fio_netio_event,
	.cleanup	= fio_netio_cleanup,
	.setup		= fio_netio_setup,
	.flags		= FIO_SYNCIO | FIO_NETIO,
};

static void fio_init fio_netio_register(void)
{
	register_ioengine(&ioengine);
}

static void fio_exit fio_netio_unregister(void)
{
	unregister_ioengine(&ioengine);
}
Commit	Line	Data
ed92ac0c JA	1	/*
	2	* Transfer data over the net. Pretty basic setup, will only support
	3	* 1 file per thread/job.
	4	*/
	5	#include <stdio.h>
	6	#include <stdlib.h>
	7	#include <unistd.h>
	8	#include <errno.h>
	9	#include <assert.h>
	10	#include <netinet/in.h>
	11	#include <arpa/inet.h>
	12	#include <netdb.h>
	13
	14	#include "../fio.h"
	15	#include "../os.h"
	16
	17	struct net_data {
	18	int send_to_net;
	19	struct io_u *last_io_u;
	20	};
	21
	22	static int fio_netio_getevents(struct thread_data *td, int fio_unused min,
	23	int max, struct timespec fio_unused *t)
	24	{
	25	assert(max <= 1);
	26
	27	/*
	28	* we can only have one finished io_u for sync io, since the depth
	29	* is always 1
	30	*/
	31	if (list_empty(&td->io_u_busylist))
	32	return 0;
	33
	34	return 1;
	35	}
	36
	37	static struct io_u fio_netio_event(struct thread_data td, int event)
	38	{
	39	struct net_data *nd = td->io_ops->data;
	40
	41	assert(event == 0);
	42
	43	return nd->last_io_u;
	44	}
	45
	46	static int fio_netio_prep(struct thread_data td, struct io_u io_u)
	47	{
	48	struct net_data *nd = td->io_ops->data;
	49	struct fio_file *f = io_u->file;
	50
7a6499da JA	51	/*
	52	* Make sure we don't see spurious reads to a receiver, and vice versa
	53	*/
	54	if ((nd->send_to_net && io_u->ddir == DDIR_READ) \|\|
	55	(!nd->send_to_net && io_u->ddir == DDIR_WRITE)) {
	56	printf("boo!\n");
	57	td_verror(td, EINVAL);
	58	return 1;
ed92ac0c	59	}
7a6499da	60
ed92ac0c JA	61	if (io_u->ddir == DDIR_SYNC)
	62	return 0;
	63	if (io_u->offset == f->last_completed_pos)
	64	return 0;
	65
e01547d2 JA	66	/*
	67	* If offset is different from last end position, it's a seek.
	68	* As network io is purely sequential, we don't allow seeks.
	69	*/
ed92ac0c JA	70	td_verror(td, EINVAL);
	71	return 1;
	72	}
	73
	74	static int fio_netio_queue(struct thread_data td, struct io_u io_u)
	75	{
	76	struct net_data *nd = td->io_ops->data;
	77	struct fio_file *f = io_u->file;
7a6499da JA	78	int ret;
	79
	80	if (io_u->ddir == DDIR_WRITE) {
	81	int flags = 0;
	82
	83	/*
	84	* if we are going to write more, set MSG_MORE
	85	*/
	86	if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen <
	87	td->io_size)
	88	flags = MSG_MORE;
ed92ac0c	89
7a6499da JA	90	ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
	91	} else if (io_u->ddir == DDIR_READ)
	92	ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, MSG_WAITALL);
	93	else
	94	ret = 0; /* must be a SYNC */
ed92ac0c	95
cec6b55d	96	if (ret != (int) io_u->xfer_buflen) {
ed92ac0c	97	if (ret > 0) {
cec6b55d JA	98	io_u->resid = io_u->xfer_buflen - ret;
	99	io_u->error = 0;
	100	return ret;
ed92ac0c JA	101	} else
	102	io_u->error = errno;
	103	}
	104
	105	if (!io_u->error)
	106	nd->last_io_u = io_u;
	107
	108	return io_u->error;
	109	}
	110
	111	static int fio_netio_setup_connect(struct thread_data td, const char host,
e01547d2	112	unsigned short port)
ed92ac0c JA	113	{
	114	struct sockaddr_in addr;
	115	struct fio_file *f;
2fc26981	116	int i;
ed92ac0c JA	117
	118	memset(&addr, 0, sizeof(addr));
	119	addr.sin_family = AF_INET;
e01547d2	120	addr.sin_port = htons(port);
ed92ac0c JA	121
ed92ac0c JA	122	if (inet_aton(host, &addr.sin_addr) != 1) {
7a6499da	123	struct hostent *hent;
ed92ac0c	124
7a6499da	125	hent = gethostbyname(host);
ed92ac0c JA	126	if (!hent) {
	127	td_vmsg(td, errno, "gethostbyname");
	128	return 1;
	129	}
	130
	131	memcpy(&addr.sin_addr, hent->h_addr, 4);
	132	}
	133
2fc26981 JA	134	for_each_file(td, f, i) {
	135	f->fd = socket(AF_INET, SOCK_STREAM, 0);
	136	if (f->fd < 0) {
	137	td_vmsg(td, errno, "socket");
	138	return 1;
	139	}
ed92ac0c	140
2fc26981 JA	141	if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
	142	td_vmsg(td, errno, "connect");
	143	return 1;
	144	}
ed92ac0c JA	145	}
	146
	147	return 0;
	148
	149	}
	150
e01547d2	151	static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
ed92ac0c JA	152	{
	153	struct sockaddr_in addr;
	154	socklen_t socklen;
2fc26981 JA	155	struct fio_file *f;
2fc26981 JA	156	int fd, opt, i;
ed92ac0c JA	157
	158	fd = socket(AF_INET, SOCK_STREAM, 0);
	159	if (fd < 0) {
	160	td_vmsg(td, errno, "socket");
	161	return 1;
	162	}
	163
	164	opt = 1;
	165	if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
	166	td_vmsg(td, errno, "setsockopt");
	167	return 1;
	168	}
	169
	170	memset(&addr, 0, sizeof(addr));
	171	addr.sin_family = AF_INET;
	172	addr.sin_addr.s_addr = htonl(INADDR_ANY);
e01547d2	173	addr.sin_port = htons(port);
ed92ac0c JA	174
	175	if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
	176	td_vmsg(td, errno, "bind");
	177	return 1;
	178	}
	179	if (listen(fd, 1) < 0) {
	180	td_vmsg(td, errno, "listen");
	181	return 1;
	182	}
	183
2fc26981 JA	184	fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files);
2fc26981 JA	185
ed92ac0c	186	socklen = sizeof(addr);
2fc26981 JA	187	for_each_file(td, f, i) {
	188	f->fd = accept(fd, (struct sockaddr *) &addr, &socklen);
	189	if (f->fd < 0) {
	190	td_vmsg(td, errno, "accept");
	191	return 1;
	192	}
ed92ac0c JA	193	}
	194
	195	return 0;
	196	}
	197
	198	static int fio_netio_setup(struct thread_data *td)
	199	{
e01547d2	200	char host[64], buf[128];
ed92ac0c	201	struct net_data *nd;
e01547d2	202	unsigned short port;
2fc26981	203	struct fio_file *f;
ed92ac0c	204	char *sep;
2fc26981	205	int ret, i;
ed92ac0c	206
7a6499da JA	207	if (!td->total_file_size) {
	208	log_err("fio: need size= set\n");
	209	return 1;
	210	}
	211
ed92ac0c JA	212	/*
	213	* work around for late init call
	214	*/
	215	if (td->io_ops->init(td))
	216	return 1;
	217
	218	nd = td->io_ops->data;
	219
	220	if (td->iomix) {
	221	log_err("fio: network connections must be read OR write\n");
	222	return 1;
	223	}
ed92ac0c JA	224
	225	strcpy(buf, td->filename);
	226
	227	sep = strchr(buf, ':');
	228	if (!sep) {
	229	log_err("fio: bad network host:port <<%s>>\n", td->filename);
	230	return 1;
	231	}
	232
	233	*sep = '\0';
	234	sep++;
	235	strcpy(host, buf);
e01547d2	236	port = atoi(sep);
ed92ac0c JA	237
	238	if (td->ddir == READ) {
	239	nd->send_to_net = 0;
	240	ret = fio_netio_setup_listen(td, port);
	241	} else {
	242	nd->send_to_net = 1;
	243	ret = fio_netio_setup_connect(td, host, port);
	244	}
	245
2fc26981 JA	246	if (ret)
	247	return ret;
	248
	249	td->io_size = td->total_file_size;
	250	td->total_io_size = td->io_size;
	251
	252	for_each_file(td, f, i) {
	253	f->file_size = td->total_file_size / td->nr_files;
	254	f->real_file_size = f->file_size;
ed92ac0c JA	255	}
ed92ac0c JA	256
2fc26981	257	return 0;
ed92ac0c JA	258	}
	259
	260	static void fio_netio_cleanup(struct thread_data *td)
	261	{
	262	if (td->io_ops->data) {
	263	free(td->io_ops->data);
	264	td->io_ops->data = NULL;
	265	}
	266	}
	267
	268	static int fio_netio_init(struct thread_data *td)
	269	{
	270	struct net_data *nd;
	271
e01547d2 JA	272	/*
	273	* Hack to work-around the ->setup() function calling init on its
	274	* own, since it needs ->io_ops->data to be set up.
	275	*/
ed92ac0c JA	276	if (td->io_ops->data)
	277	return 0;
	278
	279	nd = malloc(sizeof(*nd));
	280	nd->last_io_u = NULL;
	281	td->io_ops->data = nd;
	282	return 0;
	283	}
	284
	285	static struct ioengine_ops ioengine = {
	286	.name = "net",
	287	.version = FIO_IOOPS_VERSION,
	288	.init = fio_netio_init,
	289	.prep = fio_netio_prep,
	290	.queue = fio_netio_queue,
	291	.getevents = fio_netio_getevents,
	292	.event = fio_netio_event,
	293	.cleanup = fio_netio_cleanup,
	294	.setup = fio_netio_setup,
	295	.flags = FIO_SYNCIO \| FIO_NETIO,
	296	};
	297
	298	static void fio_init fio_netio_register(void)
	299	{
	300	register_ioengine(&ioengine);
	301	}
	302
	303	static void fio_exit fio_netio_unregister(void)
	304	{
	305	unregister_ioengine(&ioengine);
	306	}