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->xfer_buf, io_u->xfer_buflen);
84 else if (io_u->ddir == DDIR_READ)
85 ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen);
87 if (ret != (int) io_u->xfer_buflen) {
89 io_u->resid = io_u->xfer_buflen - ret;
102 static int fio_netio_setup_connect(struct thread_data *td, const char *host,
105 struct sockaddr_in addr;
109 memset(&addr, 0, sizeof(addr));
110 addr.sin_family = AF_INET;
111 addr.sin_port = htons(port);
113 if (inet_aton(host, &addr.sin_addr) != 1) {
114 struct hostent *hent = gethostbyname(host);
117 td_vmsg(td, errno, "gethostbyname");
121 memcpy(&addr.sin_addr, hent->h_addr, 4);
124 for_each_file(td, f, i) {
125 f->fd = socket(AF_INET, SOCK_STREAM, 0);
127 td_vmsg(td, errno, "socket");
131 if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
132 td_vmsg(td, errno, "connect");
141 static int fio_netio_setup_listen(struct thread_data *td, unsigned short port)
143 struct sockaddr_in addr;
148 fd = socket(AF_INET, SOCK_STREAM, 0);
150 td_vmsg(td, errno, "socket");
155 if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
156 td_vmsg(td, errno, "setsockopt");
160 memset(&addr, 0, sizeof(addr));
161 addr.sin_family = AF_INET;
162 addr.sin_addr.s_addr = htonl(INADDR_ANY);
163 addr.sin_port = htons(port);
165 if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
166 td_vmsg(td, errno, "bind");
169 if (listen(fd, 1) < 0) {
170 td_vmsg(td, errno, "listen");
174 fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files);
176 socklen = sizeof(addr);
177 for_each_file(td, f, i) {
178 f->fd = accept(fd, (struct sockaddr *) &addr, &socklen);
180 td_vmsg(td, errno, "accept");
188 static int fio_netio_setup(struct thread_data *td)
190 char host[64], buf[128];
198 * work around for late init call
200 if (td->io_ops->init(td))
203 nd = td->io_ops->data;
206 log_err("fio: network connections must be read OR write\n");
210 strcpy(buf, td->filename);
212 sep = strchr(buf, ':');
214 log_err("fio: bad network host:port <<%s>>\n", td->filename);
223 if (td->ddir == READ) {
225 ret = fio_netio_setup_listen(td, port);
228 ret = fio_netio_setup_connect(td, host, port);
234 td->io_size = td->total_file_size;
235 td->total_io_size = td->io_size;
237 for_each_file(td, f, i) {
238 f->file_size = td->total_file_size / td->nr_files;
239 f->real_file_size = f->file_size;
245 static void fio_netio_cleanup(struct thread_data *td)
247 if (td->io_ops->data) {
248 free(td->io_ops->data);
249 td->io_ops->data = NULL;
253 static int fio_netio_init(struct thread_data *td)
258 * Hack to work-around the ->setup() function calling init on its
259 * own, since it needs ->io_ops->data to be set up.
261 if (td->io_ops->data)
264 nd = malloc(sizeof(*nd));
265 nd->last_io_u = NULL;
266 td->io_ops->data = nd;
270 static struct ioengine_ops ioengine = {
272 .version = FIO_IOOPS_VERSION,
273 .init = fio_netio_init,
274 .prep = fio_netio_prep,
275 .queue = fio_netio_queue,
276 .getevents = fio_netio_getevents,
277 .event = fio_netio_event,
278 .cleanup = fio_netio_cleanup,
279 .setup = fio_netio_setup,
280 .flags = FIO_SYNCIO | FIO_NETIO,
283 static void fio_init fio_netio_register(void)
285 register_ioengine(&ioengine);
288 static void fio_exit fio_netio_unregister(void)
290 unregister_ioengine(&ioengine);