X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=engines%2Fnet.c;h=17d24374f4ed7742f676bfc83aa83b6068c8e0ab;hp=3967959f27953b4c72c28bc64d30a7758d0db6a6;hb=b5af82930ccfd7dda6a1b11794efb452eb76d8dc;hpb=6bedbfafcffbc7202b5bb621ac5886aafdc0f362;ds=sidebyside

diff --git a/engines/net.c b/engines/net.c
index 3967959f..17d24374 100644
--- a/engines/net.c
+++ b/engines/net.c
@@ -1,6 +1,5 @@
 /*
- * Transfer data over the net. Pretty basic setup, will only support
- * 1 file per thread/job.
+ * Transfer data over the net.
  */
 #include <stdio.h>
 #include <stdlib.h>
@@ -10,42 +9,21 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netdb.h>
+#include <sys/poll.h>
 
 #include "../fio.h"
 #include "../os.h"
 
-struct net_data {
+struct netio_data {
+	int listenfd;
 	int send_to_net;
-	struct io_u *last_io_u;
+	char host[64];
+	struct sockaddr_in addr;
 };
 
-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 netio_data *nd = td->io_ops->data;
 	struct fio_file *f = io_u->file;
 
 	/*
@@ -53,8 +31,7 @@ static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
 	 */
 	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);
+		td_verror(td, EINVAL, "bad direction");
 		return 1;
 	}
 		
@@ -67,19 +44,16 @@ static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
 	 * 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);
+	td_verror(td, EINVAL, "cannot seek");
 	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;
+	int ret, flags = 0;
 
 	if (io_u->ddir == DDIR_WRITE) {
-		int flags = 0;
-
 		/*
 		 * if we are going to write more, set MSG_MORE
 		 */
@@ -88,125 +62,167 @@ static int fio_netio_queue(struct thread_data *td, struct io_u *io_u)
 			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
+	} else if (io_u->ddir == DDIR_READ) {
+		flags = MSG_WAITALL;
+		ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
+	} else
 		ret = 0;	/* must be a SYNC */
 
 	if (ret != (int) io_u->xfer_buflen) {
-		if (ret > 0) {
+		if (ret >= 0) {
 			io_u->resid = io_u->xfer_buflen - ret;
 			io_u->error = 0;
-			return ret;
+			return FIO_Q_COMPLETED;
 		} else
 			io_u->error = errno;
 	}
 
-	if (!io_u->error)
-		nd->last_io_u = io_u;
+	if (io_u->error)
+		td_verror(td, io_u->error, "xfer");
 
-	return io_u->error;
+	return FIO_Q_COMPLETED;
 }
 
-static int fio_netio_setup_connect(struct thread_data *td, const char *host,
-				   unsigned short port)
+static int fio_netio_connect(struct thread_data *td, struct fio_file *f)
 {
-	struct sockaddr_in addr;
-	struct fio_file *f;
-	int i;
+	struct netio_data *nd = td->io_ops->data;
+
+	f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (f->fd < 0) {
+		td_verror(td, errno, "socket");
+		return 1;
+	}
 
-	memset(&addr, 0, sizeof(addr));
-	addr.sin_family = AF_INET;
-	addr.sin_port = htons(port);
+	if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) {
+		td_verror(td, errno, "connect");
+		return 1;
+	}
 
-	if (inet_aton(host, &addr.sin_addr) != 1) {
-		struct hostent *hent;
+	return 0;
+}
 
-		hent = gethostbyname(host);
-		if (!hent) {
-			td_verror(td, errno);
-			return 1;
-		}
+static int fio_netio_accept(struct thread_data *td, struct fio_file *f)
+{
+	struct netio_data *nd = td->io_ops->data;
+	socklen_t socklen = sizeof(nd->addr);
+	struct pollfd pfd;
+	int ret;
 
-		memcpy(&addr.sin_addr, hent->h_addr, 4);
-	}
+	fprintf(f_out, "fio: waiting for connection\n");
 
-	for_each_file(td, f, i) {
-		f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	/*
+	 * Accept loop. poll for incoming events, accept them. Repeat until we
+	 * have all connections.
+	 */
+	while (!td->terminate) {
+		pfd.fd = nd->listenfd;
+		pfd.events = POLLIN;
+
+		ret = poll(&pfd, 1, -1);
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+
+			td_verror(td, errno, "poll");
+			break;
+		} else if (!ret)
+			continue;
+
+		/*
+		 * should be impossible
+		 */
+		if (!(pfd.revents & POLLIN))
+			continue;
+
+		f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen);
 		if (f->fd < 0) {
-			td_verror(td, errno);
+			td_verror(td, errno, "accept");
 			return 1;
 		}
+		break;
+	}
 
-		if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-			td_verror(td, errno);
+	return 0;
+}
+
+
+static int fio_netio_open_file(struct thread_data *td, struct fio_file *f)
+{
+	if (td_read(td))
+		return fio_netio_accept(td, f);
+	else
+		return fio_netio_connect(td, f);
+}
+
+static int fio_netio_setup_connect(struct thread_data *td, const char *host,
+				   unsigned short port)
+{
+	struct netio_data *nd = td->io_ops->data;
+
+	nd->addr.sin_family = AF_INET;
+	nd->addr.sin_port = htons(port);
+
+	if (inet_aton(host, &nd->addr.sin_addr) != 1) {
+		struct hostent *hent;
+
+		hent = gethostbyname(host);
+		if (!hent) {
+			td_verror(td, errno, "gethostbyname");
 			return 1;
 		}
+
+		memcpy(&nd->addr.sin_addr, hent->h_addr, 4);
 	}
 
 	return 0;
-
 }
 
-static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
+static int fio_netio_setup_listen(struct thread_data *td, short port)
 {
-	struct sockaddr_in addr;
-	socklen_t socklen;
-	struct fio_file *f;
-	int fd, opt, i;
+	struct netio_data *nd = td->io_ops->data;
+	int fd, opt;
 
 	fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 	if (fd < 0) {
-		td_verror(td, errno);
+		td_verror(td, errno, "socket");
 		return 1;
 	}
 
 	opt = 1;
 	if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
-		td_verror(td, errno);
+		td_verror(td, errno, "setsockopt");
 		return 1;
 	}
 #ifdef SO_REUSEPORT
 	if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
-		td_verror(td, errno);
+		td_verror(td, errno, "setsockopt");
 		return 1;
 	}
 #endif
 
-	memset(&addr, 0, sizeof(addr));
-	addr.sin_family = AF_INET;
-	addr.sin_addr.s_addr = htonl(INADDR_ANY);
-	addr.sin_port = htons(port);
+	nd->addr.sin_family = AF_INET;
+	nd->addr.sin_addr.s_addr = htonl(INADDR_ANY);
+	nd->addr.sin_port = htons(port);
 
-	if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-		td_verror(td, errno);
+	if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) {
+		td_verror(td, errno, "bind");
 		return 1;
 	}
 	if (listen(fd, 1) < 0) {
-		td_verror(td, errno);
+		td_verror(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_verror(td, errno);
-			return 1;
-		}
-	}
-
+	nd->listenfd = fd;
 	return 0;
 }
 
-static int fio_netio_setup(struct thread_data *td)
+static int fio_netio_init(struct thread_data *td)
 {
-	char host[64], buf[128];
-	struct net_data *nd;
+	struct netio_data *nd = td->io_ops->data;
 	unsigned short port;
 	struct fio_file *f;
+	char host[64], buf[128];
 	char *sep;
 	int ret, i;
 
@@ -215,15 +231,7 @@ static int fio_netio_setup(struct thread_data *td)
 		return 1;
 	}
 
-	/*
-	 * work around for late init call
-	 */
-	if (td->io_ops->init(td))
-		return 1;
-
-	nd = td->io_ops->data;
-
-	if (td->iomix) {
+	if (td_rw(td)) {
 		log_err("fio: network connections must be read OR write\n");
 		return 1;
 	}
@@ -241,7 +249,7 @@ static int fio_netio_setup(struct thread_data *td)
 	strcpy(host, buf);
 	port = atoi(sep);
 
-	if (td->ddir == READ) {
+	if (td_read(td)) {
 		nd->send_to_net = 0;
 		ret = fio_netio_setup_listen(td, port);
 	} else {
@@ -260,30 +268,26 @@ static int fio_netio_setup(struct thread_data *td)
 		f->real_file_size = f->file_size;
 	}
 
+	td->nr_open_files = td->nr_files;
 	return 0;
 }
 
 static void fio_netio_cleanup(struct thread_data *td)
 {
-	if (td->io_ops->data) {
-		free(td->io_ops->data);
+	struct netio_data *nd = td->io_ops->data;
+
+	if (nd) {
+		free(nd);
 		td->io_ops->data = NULL;
 	}
 }
 
-static int fio_netio_init(struct thread_data *td)
+static int fio_netio_setup(struct thread_data *td)
 {
-	struct net_data *nd;
+	struct netio_data *nd = malloc(sizeof(*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;
+	memset(nd, 0, sizeof(*nd));
+	nd->listenfd = -1;
 	td->io_ops->data = nd;
 	return 0;
 }
@@ -291,14 +295,14 @@ static int fio_netio_init(struct thread_data *td)
 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,
+	.init		= fio_netio_init,
+	.cleanup	= fio_netio_cleanup,
+	.open_file	= fio_netio_open_file,
+	.close_file	= generic_close_file,
+	.flags		= FIO_SYNCIO | FIO_DISKLESSIO,
 };
 
 static void fio_init fio_netio_register(void)