[PATCH] libaio engine: fake work-around for sync issue

[fio.git] / engines / net.c

diff --git a/engines/net.c b/engines/net.c
index b1a4cdc21e4092d39b907526a25078cb184de4e1..8e5ad5ee2e2518ed615496af898ab335ae3a9636 100644 (file)
--- 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>
@@ -48,18 +47,16 @@ 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;
 
-       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;
-               }
+       /*
+        * 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)
@@ -77,17 +74,28 @@ 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;
-       unsigned int ret = 0;
-
-       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);
-
-       if (ret != io_u->buflen) {
+       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->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) {
+               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->buflen - ret;
-                       io_u->error = EIO;
+                       io_u->resid = io_u->xfer_buflen - ret;
+                       io_u->error = 0;
+                       return ret;
                } else
                        io_u->error = errno;
        }
@@ -110,10 +118,11 @@ static int fio_netio_setup_connect(struct thread_data *td, const char *host,
        addr.sin_port = htons(port);
 
        if (inet_aton(host, &addr.sin_addr) != 1) {
-               struct hostent *hent = gethostbyname(host);
+               struct hostent *hent;
 
+               hent = gethostbyname(host);
                if (!hent) {
-                       td_vmsg(td, errno, "gethostbyname");
+                       td_verror(td, errno);
                        return 1;
                }
 
@@ -121,14 +130,14 @@ static int fio_netio_setup_connect(struct thread_data *td, const char *host,
        }
 
        for_each_file(td, f, i) {
-               f->fd = socket(AF_INET, SOCK_STREAM, 0);
+               f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
                if (f->fd < 0) {
-                       td_vmsg(td, errno, "socket");
+                       td_verror(td, errno);
                        return 1;
                }
 
                if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-                       td_vmsg(td, errno, "connect");
+                       td_verror(td, errno);
                        return 1;
                }
        }
@@ -144,17 +153,23 @@ static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
        struct fio_file *f;
        int fd, opt, i;
 
-       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);
                return 1;
        }
 
        opt = 1;
        if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
-               td_vmsg(td, errno, "setsockopt");
+               td_verror(td, errno);
+               return 1;
+       }
+#ifdef SO_REUSEPORT
+       if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
+               td_verror(td, errno);
                return 1;
        }
+#endif
 
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
@@ -162,11 +177,11 @@ static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
        addr.sin_port = htons(port);
 
        if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-               td_vmsg(td, errno, "bind");
+               td_verror(td, errno);
                return 1;
        }
        if (listen(fd, 1) < 0) {
-               td_vmsg(td, errno, "listen");
+               td_verror(td, errno);
                return 1;
        }
 
@@ -176,7 +191,7 @@ static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
        for_each_file(td, f, i) {
                f->fd = accept(fd, (struct sockaddr *) &addr, &socklen);
                if (f->fd < 0) {
-                       td_vmsg(td, errno, "accept");
+                       td_verror(td, errno);
                        return 1;
                }
        }
@@ -193,6 +208,11 @@ static int fio_netio_setup(struct thread_data *td)
        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
         */
@@ -219,7 +239,7 @@ static int fio_netio_setup(struct thread_data *td)
        strcpy(host, buf);
        port = atoi(sep);
 
-       if (td->ddir == READ) {
+       if (td->ddir == DDIR_READ) {
                nd->send_to_net = 0;
                ret = fio_netio_setup_listen(td, port);
        } else {