Commit | Line | Data |
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ed92ac0c JA |
1 | /* |
2 | * Transfer data over the net. Pretty basic setup, will only support | |
3 | * 1 file per thread/job. | |
4 | */ | |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
7 | #include <unistd.h> | |
8 | #include <errno.h> | |
9 | #include <assert.h> | |
10 | #include <netinet/in.h> | |
11 | #include <arpa/inet.h> | |
12 | #include <netdb.h> | |
13 | ||
14 | #include "../fio.h" | |
15 | #include "../os.h" | |
16 | ||
17 | struct net_data { | |
18 | int send_to_net; | |
19 | struct io_u *last_io_u; | |
20 | }; | |
21 | ||
22 | static int fio_netio_getevents(struct thread_data *td, int fio_unused min, | |
23 | int max, struct timespec fio_unused *t) | |
24 | { | |
25 | assert(max <= 1); | |
26 | ||
27 | /* | |
28 | * we can only have one finished io_u for sync io, since the depth | |
29 | * is always 1 | |
30 | */ | |
31 | if (list_empty(&td->io_u_busylist)) | |
32 | return 0; | |
33 | ||
34 | return 1; | |
35 | } | |
36 | ||
37 | static struct io_u *fio_netio_event(struct thread_data *td, int event) | |
38 | { | |
39 | struct net_data *nd = td->io_ops->data; | |
40 | ||
41 | assert(event == 0); | |
42 | ||
43 | return nd->last_io_u; | |
44 | } | |
45 | ||
46 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
47 | { | |
48 | struct net_data *nd = td->io_ops->data; | |
49 | struct fio_file *f = io_u->file; | |
50 | ||
7a6499da JA |
51 | /* |
52 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
53 | */ | |
54 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || | |
55 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
56 | printf("boo!\n"); | |
57 | td_verror(td, EINVAL); | |
58 | return 1; | |
ed92ac0c | 59 | } |
7a6499da | 60 | |
ed92ac0c JA |
61 | if (io_u->ddir == DDIR_SYNC) |
62 | return 0; | |
63 | if (io_u->offset == f->last_completed_pos) | |
64 | return 0; | |
65 | ||
e01547d2 JA |
66 | /* |
67 | * If offset is different from last end position, it's a seek. | |
68 | * As network io is purely sequential, we don't allow seeks. | |
69 | */ | |
ed92ac0c JA |
70 | td_verror(td, EINVAL); |
71 | return 1; | |
72 | } | |
73 | ||
74 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
75 | { | |
76 | struct net_data *nd = td->io_ops->data; | |
77 | struct fio_file *f = io_u->file; | |
7a6499da JA |
78 | int ret; |
79 | ||
80 | if (io_u->ddir == DDIR_WRITE) { | |
81 | int flags = 0; | |
82 | ||
83 | /* | |
84 | * if we are going to write more, set MSG_MORE | |
85 | */ | |
86 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < | |
87 | td->io_size) | |
88 | flags = MSG_MORE; | |
ed92ac0c | 89 | |
7a6499da JA |
90 | ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); |
91 | } else if (io_u->ddir == DDIR_READ) | |
92 | ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, MSG_WAITALL); | |
93 | else | |
94 | ret = 0; /* must be a SYNC */ | |
ed92ac0c | 95 | |
cec6b55d | 96 | if (ret != (int) io_u->xfer_buflen) { |
ed92ac0c | 97 | if (ret > 0) { |
cec6b55d JA |
98 | io_u->resid = io_u->xfer_buflen - ret; |
99 | io_u->error = 0; | |
100 | return ret; | |
ed92ac0c JA |
101 | } else |
102 | io_u->error = errno; | |
103 | } | |
104 | ||
105 | if (!io_u->error) | |
106 | nd->last_io_u = io_u; | |
107 | ||
108 | return io_u->error; | |
109 | } | |
110 | ||
111 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
e01547d2 | 112 | unsigned short port) |
ed92ac0c JA |
113 | { |
114 | struct sockaddr_in addr; | |
115 | struct fio_file *f; | |
2fc26981 | 116 | int i; |
ed92ac0c JA |
117 | |
118 | memset(&addr, 0, sizeof(addr)); | |
119 | addr.sin_family = AF_INET; | |
e01547d2 | 120 | addr.sin_port = htons(port); |
ed92ac0c JA |
121 | |
122 | if (inet_aton(host, &addr.sin_addr) != 1) { | |
7a6499da | 123 | struct hostent *hent; |
ed92ac0c | 124 | |
7a6499da | 125 | hent = gethostbyname(host); |
ed92ac0c | 126 | if (!hent) { |
6bedbfaf | 127 | td_verror(td, errno); |
ed92ac0c JA |
128 | return 1; |
129 | } | |
130 | ||
131 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
132 | } | |
133 | ||
2fc26981 | 134 | for_each_file(td, f, i) { |
6bedbfaf | 135 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
2fc26981 | 136 | if (f->fd < 0) { |
6bedbfaf | 137 | td_verror(td, errno); |
2fc26981 JA |
138 | return 1; |
139 | } | |
ed92ac0c | 140 | |
2fc26981 | 141 | if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
6bedbfaf | 142 | td_verror(td, errno); |
2fc26981 JA |
143 | return 1; |
144 | } | |
ed92ac0c JA |
145 | } |
146 | ||
147 | return 0; | |
148 | ||
149 | } | |
150 | ||
e01547d2 | 151 | static int fio_netio_setup_listen(struct thread_data *td, unsigned short port) |
ed92ac0c JA |
152 | { |
153 | struct sockaddr_in addr; | |
154 | socklen_t socklen; | |
2fc26981 JA |
155 | struct fio_file *f; |
156 | int fd, opt, i; | |
ed92ac0c | 157 | |
6bedbfaf | 158 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 159 | if (fd < 0) { |
6bedbfaf | 160 | td_verror(td, errno); |
ed92ac0c JA |
161 | return 1; |
162 | } | |
163 | ||
164 | opt = 1; | |
165 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
6bedbfaf | 166 | td_verror(td, errno); |
ed92ac0c JA |
167 | return 1; |
168 | } | |
6bedbfaf JA |
169 | #ifdef SO_REUSEPORT |
170 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
171 | td_verror(td, errno); | |
172 | return 1; | |
173 | } | |
174 | #endif | |
ed92ac0c JA |
175 | |
176 | memset(&addr, 0, sizeof(addr)); | |
177 | addr.sin_family = AF_INET; | |
178 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
e01547d2 | 179 | addr.sin_port = htons(port); |
ed92ac0c JA |
180 | |
181 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
6bedbfaf | 182 | td_verror(td, errno); |
ed92ac0c JA |
183 | return 1; |
184 | } | |
185 | if (listen(fd, 1) < 0) { | |
6bedbfaf | 186 | td_verror(td, errno); |
ed92ac0c JA |
187 | return 1; |
188 | } | |
189 | ||
2fc26981 JA |
190 | fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files); |
191 | ||
ed92ac0c | 192 | socklen = sizeof(addr); |
2fc26981 JA |
193 | for_each_file(td, f, i) { |
194 | f->fd = accept(fd, (struct sockaddr *) &addr, &socklen); | |
195 | if (f->fd < 0) { | |
6bedbfaf | 196 | td_verror(td, errno); |
2fc26981 JA |
197 | return 1; |
198 | } | |
ed92ac0c JA |
199 | } |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int fio_netio_setup(struct thread_data *td) | |
205 | { | |
e01547d2 | 206 | char host[64], buf[128]; |
ed92ac0c | 207 | struct net_data *nd; |
e01547d2 | 208 | unsigned short port; |
2fc26981 | 209 | struct fio_file *f; |
ed92ac0c | 210 | char *sep; |
2fc26981 | 211 | int ret, i; |
ed92ac0c | 212 | |
7a6499da JA |
213 | if (!td->total_file_size) { |
214 | log_err("fio: need size= set\n"); | |
215 | return 1; | |
216 | } | |
217 | ||
ed92ac0c JA |
218 | /* |
219 | * work around for late init call | |
220 | */ | |
221 | if (td->io_ops->init(td)) | |
222 | return 1; | |
223 | ||
224 | nd = td->io_ops->data; | |
225 | ||
226 | if (td->iomix) { | |
227 | log_err("fio: network connections must be read OR write\n"); | |
228 | return 1; | |
229 | } | |
ed92ac0c JA |
230 | |
231 | strcpy(buf, td->filename); | |
232 | ||
233 | sep = strchr(buf, ':'); | |
234 | if (!sep) { | |
235 | log_err("fio: bad network host:port <<%s>>\n", td->filename); | |
236 | return 1; | |
237 | } | |
238 | ||
239 | *sep = '\0'; | |
240 | sep++; | |
241 | strcpy(host, buf); | |
e01547d2 | 242 | port = atoi(sep); |
ed92ac0c JA |
243 | |
244 | if (td->ddir == READ) { | |
245 | nd->send_to_net = 0; | |
246 | ret = fio_netio_setup_listen(td, port); | |
247 | } else { | |
248 | nd->send_to_net = 1; | |
249 | ret = fio_netio_setup_connect(td, host, port); | |
250 | } | |
251 | ||
2fc26981 JA |
252 | if (ret) |
253 | return ret; | |
254 | ||
255 | td->io_size = td->total_file_size; | |
256 | td->total_io_size = td->io_size; | |
257 | ||
258 | for_each_file(td, f, i) { | |
259 | f->file_size = td->total_file_size / td->nr_files; | |
260 | f->real_file_size = f->file_size; | |
ed92ac0c JA |
261 | } |
262 | ||
2fc26981 | 263 | return 0; |
ed92ac0c JA |
264 | } |
265 | ||
266 | static void fio_netio_cleanup(struct thread_data *td) | |
267 | { | |
268 | if (td->io_ops->data) { | |
269 | free(td->io_ops->data); | |
270 | td->io_ops->data = NULL; | |
271 | } | |
272 | } | |
273 | ||
274 | static int fio_netio_init(struct thread_data *td) | |
275 | { | |
276 | struct net_data *nd; | |
277 | ||
e01547d2 JA |
278 | /* |
279 | * Hack to work-around the ->setup() function calling init on its | |
280 | * own, since it needs ->io_ops->data to be set up. | |
281 | */ | |
ed92ac0c JA |
282 | if (td->io_ops->data) |
283 | return 0; | |
284 | ||
285 | nd = malloc(sizeof(*nd)); | |
286 | nd->last_io_u = NULL; | |
287 | td->io_ops->data = nd; | |
288 | return 0; | |
289 | } | |
290 | ||
291 | static struct ioengine_ops ioengine = { | |
292 | .name = "net", | |
293 | .version = FIO_IOOPS_VERSION, | |
294 | .init = fio_netio_init, | |
295 | .prep = fio_netio_prep, | |
296 | .queue = fio_netio_queue, | |
297 | .getevents = fio_netio_getevents, | |
298 | .event = fio_netio_event, | |
299 | .cleanup = fio_netio_cleanup, | |
300 | .setup = fio_netio_setup, | |
301 | .flags = FIO_SYNCIO | FIO_NETIO, | |
302 | }; | |
303 | ||
304 | static void fio_init fio_netio_register(void) | |
305 | { | |
306 | register_ioengine(&ioengine); | |
307 | } | |
308 | ||
309 | static void fio_exit fio_netio_unregister(void) | |
310 | { | |
311 | unregister_ioengine(&ioengine); | |
312 | } |