#include <arpa/inet.h>
#include <netdb.h>
#include <sys/poll.h>
+#include <sys/types.h>
+#include <sys/socket.h>
#include "../fio.h"
int listenfd;
int send_to_net;
int use_splice;
+ int net_protocol;
int pipes[2];
char host[64];
struct sockaddr_in addr;
};
+struct udp_close_msg {
+ uint32_t magic;
+ uint32_t cmd;
+};
+
+enum {
+ FIO_LINK_CLOSE = 0x89,
+ FIO_LINK_CLOSE_MAGIC = 0x6c696e6b,
+};
+
+/*
+ * Return -1 for error and 'nr events' for a positive number
+ * of events
+ */
+static int poll_wait(struct thread_data *td, int fd, short events)
+{
+ struct pollfd pfd;
+ int ret;
+
+ while (!td->terminate) {
+ pfd.fd = fd;
+ pfd.events = events;
+ ret = poll(&pfd, 1, -1);
+ if (ret < 0) {
+ if (errno == EINTR)
+ break;
+
+ td_verror(td, errno, "poll");
+ return -1;
+ } else if (!ret)
+ continue;
+
+ break;
+ }
+
+ if (pfd.revents & events)
+ return 1;
+
+ return -1;
+}
+
static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
{
struct netio_data *nd = td->io_ops->data;
#else
static int fio_netio_splice_in(struct thread_data *td, struct io_u *io_u)
{
- errno = -EOPNOTSUPP;
+ errno = EOPNOTSUPP;
return -1;
}
static int fio_netio_splice_out(struct thread_data *td, struct io_u *io_u)
{
- errno = -EOPNOTSUPP;
+ errno = EOPNOTSUPP;
return -1;
}
#endif
static int fio_netio_send(struct thread_data *td, struct io_u *io_u)
{
- int flags = 0;
-
- /*
- * if we are going to write more, set MSG_MORE
- */
+ struct netio_data *nd = td->io_ops->data;
+ int ret, flags = MSG_DONTWAIT;
+
+ do {
+ if (nd->net_protocol == IPPROTO_UDP) {
+ struct sockaddr *to = (struct sockaddr *) &nd->addr;
+
+ ret = sendto(io_u->file->fd, io_u->xfer_buf,
+ io_u->xfer_buflen, flags, to,
+ sizeof(*to));
+ } else {
+ /*
+ * if we are going to write more, set MSG_MORE
+ */
#ifdef MSG_MORE
- if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < td->o.size)
- flags = MSG_MORE;
+ if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen <
+ td->o.size)
+ flags |= MSG_MORE;
#endif
+ ret = send(io_u->file->fd, io_u->xfer_buf,
+ io_u->xfer_buflen, flags);
+ }
+ if (ret > 0)
+ break;
+
+ ret = poll_wait(td, io_u->file->fd, POLLOUT);
+ if (ret <= 0)
+ break;
+
+ flags &= ~MSG_DONTWAIT;
+ } while (1);
+
+ return ret;
+}
+
+static int is_udp_close(struct io_u *io_u, int len)
+{
+ struct udp_close_msg *msg;
+
+ if (len != sizeof(struct udp_close_msg))
+ return 0;
- return send(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
+ msg = io_u->xfer_buf;
+ if (ntohl(msg->magic) != FIO_LINK_CLOSE_MAGIC)
+ return 0;
+ if (ntohl(msg->cmd) != FIO_LINK_CLOSE)
+ return 0;
+
+ return 1;
}
-static int fio_netio_recv(struct io_u *io_u)
+static int fio_netio_recv(struct thread_data *td, struct io_u *io_u)
{
- int flags = MSG_WAITALL;
+ struct netio_data *nd = td->io_ops->data;
+ int ret, flags = MSG_DONTWAIT;
+
+ do {
+ if (nd->net_protocol == IPPROTO_UDP) {
+ socklen_t len = sizeof(nd->addr);
+ struct sockaddr *from = (struct sockaddr *) &nd->addr;
+
+ ret = recvfrom(io_u->file->fd, io_u->xfer_buf,
+ io_u->xfer_buflen, flags, from, &len);
+ if (is_udp_close(io_u, ret)) {
+ td->done = 1;
+ return 0;
+ }
+ } else {
+ ret = recv(io_u->file->fd, io_u->xfer_buf,
+ io_u->xfer_buflen, flags);
+ }
+ if (ret > 0)
+ break;
- return recv(io_u->file->fd, io_u->xfer_buf, io_u->xfer_buflen, flags);
+ ret = poll_wait(td, io_u->file->fd, POLLIN);
+ if (ret <= 0)
+ break;
+ flags &= ~MSG_DONTWAIT;
+ flags |= MSG_WAITALL;
+ } while (1);
+
+ return ret;
}
static int fio_netio_queue(struct thread_data *td, struct io_u *io_u)
fio_ro_check(td, io_u);
if (io_u->ddir == DDIR_WRITE) {
- if (nd->use_splice)
- ret = fio_netio_splice_out(td, io_u);
- else
+ if (!nd->use_splice || nd->net_protocol == IPPROTO_UDP)
ret = fio_netio_send(td, io_u);
+ else
+ ret = fio_netio_splice_out(td, io_u);
} else if (io_u->ddir == DDIR_READ) {
- if (nd->use_splice)
- ret = fio_netio_splice_in(td, io_u);
+ if (!nd->use_splice || nd->net_protocol == IPPROTO_UDP)
+ ret = fio_netio_recv(td, io_u);
else
- ret = fio_netio_recv(io_u);
+ ret = fio_netio_splice_in(td, io_u);
} else
ret = 0; /* must be a SYNC */
io_u->resid = io_u->xfer_buflen - ret;
io_u->error = 0;
return FIO_Q_COMPLETED;
- } else
- io_u->error = errno;
+ } else {
+ int err = errno;
+
+ if (io_u->ddir == DDIR_WRITE && err == EMSGSIZE)
+ return FIO_Q_BUSY;
+
+ io_u->error = err;
+ }
}
if (io_u->error)
static int fio_netio_connect(struct thread_data *td, struct fio_file *f)
{
struct netio_data *nd = td->io_ops->data;
+ int type;
+
+ if (nd->net_protocol == IPPROTO_TCP)
+ type = SOCK_STREAM;
+ else
+ type = SOCK_DGRAM;
- f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ f->fd = socket(AF_INET, type, nd->net_protocol);
if (f->fd < 0) {
td_verror(td, errno, "socket");
return 1;
}
+ if (nd->net_protocol == IPPROTO_UDP)
+ return 0;
+
if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) {
td_verror(td, errno, "connect");
return 1;
{
struct netio_data *nd = td->io_ops->data;
socklen_t socklen = sizeof(nd->addr);
- struct pollfd pfd;
- int ret;
- log_info("fio: waiting for connection\n");
-
- /*
- * 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;
+ if (nd->net_protocol == IPPROTO_UDP) {
+ f->fd = nd->listenfd;
+ return 0;
+ }
- td_verror(td, errno, "poll");
- break;
- } else if (!ret)
- continue;
+ log_info("fio: waiting for connection\n");
- /*
- * should be impossible
- */
- if (!(pfd.revents & POLLIN))
- continue;
+ if (poll_wait(td, nd->listenfd, POLLIN) < 0)
+ return 1;
- f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen);
- if (f->fd < 0) {
- td_verror(td, errno, "accept");
- return 1;
- }
- break;
+ f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen);
+ if (f->fd < 0) {
+ td_verror(td, errno, "accept");
+ return 1;
}
return 0;
return fio_netio_connect(td, f);
}
+static void fio_netio_udp_close(struct thread_data *td, struct fio_file *f)
+{
+ struct netio_data *nd = td->io_ops->data;
+ struct udp_close_msg msg;
+ struct sockaddr *to = (struct sockaddr *) &nd->addr;
+ int ret;
+
+ msg.magic = htonl(FIO_LINK_CLOSE_MAGIC);
+ msg.cmd = htonl(FIO_LINK_CLOSE);
+
+ ret = sendto(f->fd, &msg, sizeof(msg), MSG_WAITALL, to,
+ sizeof(nd->addr));
+ if (ret < 0)
+ td_verror(td, errno, "sendto udp link close");
+}
+
+static int fio_netio_close_file(struct thread_data *td, struct fio_file *f)
+{
+ struct netio_data *nd = td->io_ops->data;
+
+ /*
+ * If this is an UDP connection, notify the receiver that we are
+ * closing down the link
+ */
+ if (nd->net_protocol == IPPROTO_UDP)
+ fio_netio_udp_close(td, f);
+
+ return generic_close_file(td, f);
+}
+
static int fio_netio_setup_connect(struct thread_data *td, const char *host,
unsigned short port)
{
static int fio_netio_setup_listen(struct thread_data *td, short port)
{
struct netio_data *nd = td->io_ops->data;
- int fd, opt;
+ int fd, opt, type;
+
+ if (nd->net_protocol == IPPROTO_TCP)
+ type = SOCK_STREAM;
+ else
+ type = SOCK_DGRAM;
- fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ fd = socket(AF_INET, type, nd->net_protocol);
if (fd < 0) {
td_verror(td, errno, "socket");
return 1;
td_verror(td, errno, "bind");
return 1;
}
- if (listen(fd, 1) < 0) {
+ if (nd->net_protocol == IPPROTO_TCP && listen(fd, 1) < 0) {
td_verror(td, errno, "listen");
return 1;
}
struct netio_data *nd = td->io_ops->data;
unsigned int port;
char host[64], buf[128];
- char *sep;
+ char *sep, *portp, *modep;
int ret;
if (td_rw(td)) {
if (!strlen(host))
goto bad_host;
- port = strtol(sep, NULL, 10);
+ modep = NULL;
+ portp = sep;
+ sep = strchr(portp, '/');
+ if (sep) {
+ *sep = '\0';
+ modep = sep + 1;
+ }
+
+ port = strtol(portp, NULL, 10);
if (!port || port > 65535)
goto bad_host;
+ if (modep) {
+ if (!strncmp("tcp", modep, strlen(modep)) ||
+ !strncmp("TCP", modep, strlen(modep)))
+ nd->net_protocol = IPPROTO_TCP;
+ else if (!strncmp("udp", modep, strlen(modep)) ||
+ !strncmp("UDP", modep, strlen(modep)))
+ nd->net_protocol = IPPROTO_UDP;
+ else
+ goto bad_host;
+ } else
+ nd->net_protocol = IPPROTO_TCP;
+
if (td_read(td)) {
nd->send_to_net = 0;
ret = fio_netio_setup_listen(td, port);
return ret;
bad_host:
- log_err("fio: bad network host/port: %s\n", td->o.filename);
+ log_err("fio: bad network host/port/protocol: %s\n", td->o.filename);
return 1;
}
close(nd->pipes[1]);
free(nd);
- td->io_ops->data = NULL;
}
}
.init = fio_netio_init,
.cleanup = fio_netio_cleanup,
.open_file = fio_netio_open_file,
- .close_file = generic_close_file,
+ .close_file = fio_netio_close_file,
.flags = FIO_SYNCIO | FIO_DISKLESSIO | FIO_UNIDIR |
FIO_SIGQUIT,
};
projects / fio.git / blobdiff