2 * Transfer data over the net. Pretty basic setup, will only support
3 * 1 file per thread/job.
10 #include <netinet/in.h>
11 #include <arpa/inet.h>
19 struct io_u *last_io_u;
22 static int fio_netio_getevents(struct thread_data *td, int fio_unused min,
23 int max, struct timespec fio_unused *t)
28 * we can only have one finished io_u for sync io, since the depth
31 if (list_empty(&td->io_u_busylist))
37 static struct io_u *fio_netio_event(struct thread_data *td, int event)
39 struct net_data *nd = td->io_ops->data;
46 static int fio_netio_prep(struct thread_data *td, struct io_u *io_u)
48 struct net_data *nd = td->io_ops->data;
49 struct fio_file *f = io_u->file;
51 if (nd->send_to_net) {
52 if (io_u->ddir == DDIR_READ) {
53 td_verror(td, EINVAL);
57 if (io_u->ddir == DDIR_WRITE) {
58 td_verror(td, EINVAL);
63 if (io_u->ddir == DDIR_SYNC)
65 if (io_u->offset == f->last_completed_pos)
69 * If offset is different from last end position, it's a seek.
70 * As network io is purely sequential, we don't allow seeks.
72 td_verror(td, EINVAL);
76 static int fio_netio_queue(struct thread_data *td, struct io_u *io_u)
78 struct net_data *nd = td->io_ops->data;
79 struct fio_file *f = io_u->file;
82 if (io_u->ddir == DDIR_WRITE)
83 ret = write(f->fd, io_u->buf, io_u->buflen);
84 else if (io_u->ddir == DDIR_READ)
85 ret = read(f->fd, io_u->buf, io_u->buflen);
87 if (ret != io_u->buflen) {
89 io_u->resid = io_u->buflen - ret;
101 static int fio_netio_setup_connect(struct thread_data *td, const char *host,
104 struct sockaddr_in addr;
107 memset(&addr, 0, sizeof(addr));
108 addr.sin_family = AF_INET;
109 addr.sin_port = htons(port);
111 if (inet_aton(host, &addr.sin_addr) != 1) {
112 struct hostent *hent = gethostbyname(host);
115 td_vmsg(td, errno, "gethostbyname");
119 memcpy(&addr.sin_addr, hent->h_addr, 4);
124 f->fd = socket(AF_INET, SOCK_STREAM, 0);
126 td_vmsg(td, errno, "socket");
130 if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
131 td_vmsg(td, errno, "connect");
139 static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
141 struct sockaddr_in addr;
145 fd = socket(AF_INET, SOCK_STREAM, 0);
147 td_vmsg(td, errno, "socket");
152 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
153 td_vmsg(td, errno, "setsockopt");
157 memset(&addr, 0, sizeof(addr));
158 addr.sin_family = AF_INET;
159 addr.sin_addr.s_addr = htonl(INADDR_ANY);
160 addr.sin_port = htons(port);
162 if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
163 td_vmsg(td, errno, "bind");
166 if (listen(fd, 1) < 0) {
167 td_vmsg(td, errno, "listen");
171 socklen = sizeof(addr);
172 td->files[0].fd = accept(fd, (struct sockaddr *) &addr, &socklen);
173 if (td->files[0].fd < 0) {
174 td_vmsg(td, errno, "accept");
181 static int fio_netio_setup(struct thread_data *td)
183 char host[64], buf[128];
190 * work around for late init call
192 if (td->io_ops->init(td))
195 nd = td->io_ops->data;
198 log_err("fio: network connections must be read OR write\n");
201 if (td->nr_files > 1) {
202 log_err("fio: only one file supported for network\n");
206 strcpy(buf, td->filename);
208 sep = strchr(buf, ':');
210 log_err("fio: bad network host:port <<%s>>\n", td->filename);
219 if (td->ddir == READ) {
221 ret = fio_netio_setup_listen(td, port);
224 ret = fio_netio_setup_connect(td, host, port);
228 td->io_size = td->total_file_size;
229 td->total_io_size = td->io_size;
230 td->files[0].real_file_size = td->io_size;
236 static void fio_netio_cleanup(struct thread_data *td)
238 if (td->io_ops->data) {
239 free(td->io_ops->data);
240 td->io_ops->data = NULL;
244 static int fio_netio_init(struct thread_data *td)
249 * Hack to work-around the ->setup() function calling init on its
250 * own, since it needs ->io_ops->data to be set up.
252 if (td->io_ops->data)
255 nd = malloc(sizeof(*nd));
256 nd->last_io_u = NULL;
257 td->io_ops->data = nd;
261 static struct ioengine_ops ioengine = {
263 .version = FIO_IOOPS_VERSION,
264 .init = fio_netio_init,
265 .prep = fio_netio_prep,
266 .queue = fio_netio_queue,
267 .getevents = fio_netio_getevents,
268 .event = fio_netio_event,
269 .cleanup = fio_netio_cleanup,
270 .setup = fio_netio_setup,
271 .flags = FIO_SYNCIO | FIO_NETIO,
274 static void fio_init fio_netio_register(void)
276 register_ioengine(&ioengine);
279 static void fio_exit fio_netio_unregister(void)
281 unregister_ioengine(&ioengine);