/*
- * Transfer data over the net. Pretty basic setup, will only support
- * 1 file per thread/job.
+ * net engine
+ *
+ * IO engine that reads/writes to/from sockets.
+ *
*/
#include <stdio.h>
#include <stdlib.h>
#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)
+static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
{
- assert(max <= 1);
+ struct netio_data *nd = td->io_ops->data;
+ struct fio_file *f = io_u->file;
/*
- * we can only have one finished io_u for sync io, since the depth
- * is always 1
+ * Make sure we don't see spurious reads to a receiver, and vice versa
*/
- if (list_empty(&td->io_u_busylist))
+ if ((nd->send_to_net && io_u->ddir == DDIR_READ) ||
+ (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) {
+ td_verror(td, EINVAL, "bad direction");
+ 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, "cannot seek");
return 1;
}
-static struct io_u *fio_netio_event(struct thread_data *td, int event)
+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, flags = 0;
+
+ if (io_u->ddir == DDIR_WRITE) {
+ /*
+ * if we are going to write more, set MSG_MORE
+ */
+ if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen <
+ td->o.size)
+ flags = MSG_MORE;
+
+ ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
+ } 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) {
+ io_u->resid = io_u->xfer_buflen - ret;
+ io_u->error = 0;
+ return FIO_Q_COMPLETED;
+ } else
+ io_u->error = errno;
+ }
- assert(event == 0);
+ if (io_u->error)
+ td_verror(td, io_u->error, "xfer");
- return nd->last_io_u;
+ return FIO_Q_COMPLETED;
}
-static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
+static int fio_netio_connect(struct thread_data *td, struct fio_file *f)
{
- struct net_data *nd = td->io_ops->data;
- struct fio_file *f = io_u->file;
+ struct netio_data *nd = td->io_ops->data;
- if (nd->send_to_net) {
- if (io_u->ddir == DDIR_READ) {
- td_verror(td, EINVAL);
- return 1;
- }
- } else {
- if (io_u->ddir == DDIR_WRITE) {
- td_verror(td, EINVAL);
- return 1;
- }
+ f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (f->fd < 0) {
+ td_verror(td, errno, "socket");
+ return 1;
}
- if (io_u->ddir == DDIR_SYNC)
- return 0;
- if (io_u->offset == f->last_completed_pos)
- return 0;
+ if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) {
+ td_verror(td, errno, "connect");
+ return 1;
+ }
- td_verror(td, EINVAL);
- return 1;
+ return 0;
}
-static int fio_netio_queue(struct thread_data *td, struct io_u *io_u)
+static int fio_netio_accept(struct thread_data *td, struct fio_file *f)
{
- struct net_data *nd = td->io_ops->data;
- struct fio_file *f = io_u->file;
- unsigned int ret = 0;
+ struct netio_data *nd = td->io_ops->data;
+ socklen_t socklen = sizeof(nd->addr);
+ struct pollfd pfd;
+ int ret;
- if (io_u->ddir == DDIR_WRITE)
- ret = write(f->fd, io_u->buf, io_u->buflen);
- else if (io_u->ddir == DDIR_READ)
- ret = read(f->fd, io_u->buf, io_u->buflen);
+ log_info("fio: waiting for connection\n");
- if (ret != io_u->buflen) {
- if (ret > 0) {
- io_u->resid = io_u->buflen - ret;
- io_u->error = EIO;
- } else
- io_u->error = errno;
+ /*
+ * 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, "accept");
+ return 1;
+ }
+ break;
}
- if (!io_u->error)
- nd->last_io_u = io_u;
+ return 0;
+}
- return io_u->error;
+
+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,
- const char *port)
+ unsigned short port)
{
- struct sockaddr_in addr;
- struct fio_file *f;
+ struct netio_data *nd = td->io_ops->data;
- memset(&addr, 0, sizeof(addr));
- addr.sin_family = AF_INET;
- addr.sin_port = htons(atoi(port));
+ nd->addr.sin_family = AF_INET;
+ nd->addr.sin_port = htons(port);
- if (inet_aton(host, &addr.sin_addr) != 1) {
- struct hostent *hent = gethostbyname(host);
+ if (inet_aton(host, &nd->addr.sin_addr) != 1) {
+ struct hostent *hent;
+ hent = gethostbyname(host);
if (!hent) {
- td_vmsg(td, errno, "gethostbyname");
+ td_verror(td, errno, "gethostbyname");
return 1;
}
- memcpy(&addr.sin_addr, hent->h_addr, 4);
- }
-
- f = &td->files[0];
-
- 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;
+ memcpy(&nd->addr.sin_addr, hent->h_addr, 4);
}
return 0;
-
}
-static int fio_netio_setup_listen(struct thread_data *td, const char *port)
+static int fio_netio_setup_listen(struct thread_data *td, short port)
{
- struct sockaddr_in addr;
- socklen_t socklen;
+ struct netio_data *nd = td->io_ops->data;
int fd, opt;
- fd = socket(AF_INET, SOCK_STREAM, 0);
+ fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd < 0) {
- td_vmsg(td, errno, "socket");
+ td_verror(td, errno, "socket");
return 1;
}
opt = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
- td_vmsg(td, errno, "setsockopt");
+ 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, "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(atoi(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_vmsg(td, errno, "bind");
+ if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) {
+ td_verror(td, errno, "bind");
return 1;
}
if (listen(fd, 1) < 0) {
- td_vmsg(td, errno, "listen");
- return 1;
- }
-
- socklen = sizeof(addr);
- td->files[0].fd = accept(fd, (struct sockaddr *) &addr, &socklen);
- if (td->files[0].fd < 0) {
- td_vmsg(td, errno, "accept");
+ td_verror(td, errno, "listen");
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], port[64], buf[128];
- struct net_data *nd;
+ struct netio_data *nd = td->io_ops->data;
+ unsigned short port;
+ char host[64], buf[128];
char *sep;
int ret;
- /*
- * 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;
}
- if (td->nr_files > 1) {
- log_err("fio: only one file supported for network\n");
- return 1;
- }
- strcpy(buf, td->filename);
+ strcpy(buf, td->o.filename);
- sep = strchr(buf, ':');
+ sep = strchr(buf, '/');
if (!sep) {
- log_err("fio: bad network host:port <<%s>>\n", td->filename);
+ log_err("fio: bad network host/port <<%s>>\n", td->o.filename);
return 1;
}
*sep = '\0';
sep++;
strcpy(host, buf);
- strcpy(port, sep);
+ port = atoi(sep);
- if (td->ddir == READ) {
+ if (td_read(td)) {
nd->send_to_net = 0;
ret = fio_netio_setup_listen(td, port);
} else {
ret = fio_netio_setup_connect(td, host, port);
}
- if (!ret) {
- td->io_size = td->total_file_size;
- td->total_io_size = td->io_size;
- td->files[0].real_file_size = td->io_size;
- }
-
return ret;
}
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;
+ struct fio_file *f;
+ unsigned int i;
- if (td->io_ops->data)
- return 0;
+ if (!td->io_ops->data) {
+ nd = malloc(sizeof(*nd));;
+
+ memset(nd, 0, sizeof(*nd));
+ nd->listenfd = -1;
+ td->io_ops->data = nd;
+
+ for_each_file(td, f, i)
+ f->real_file_size = -1ULL;
+ }
- 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,
+ .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)
projects / fio.git / blobdiff