Commit | Line | Data |
---|---|---|
ed92ac0c | 1 | /* |
d4f12dd0 | 2 | * Transfer data over the net. |
ed92ac0c JA |
3 | */ |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
6 | #include <unistd.h> | |
7 | #include <errno.h> | |
8 | #include <assert.h> | |
9 | #include <netinet/in.h> | |
10 | #include <arpa/inet.h> | |
11 | #include <netdb.h> | |
12 | ||
13 | #include "../fio.h" | |
14 | #include "../os.h" | |
15 | ||
16 | struct net_data { | |
17 | int send_to_net; | |
18 | struct io_u *last_io_u; | |
19 | }; | |
20 | ||
21 | static int fio_netio_getevents(struct thread_data *td, int fio_unused min, | |
22 | int max, struct timespec fio_unused *t) | |
23 | { | |
24 | assert(max <= 1); | |
25 | ||
26 | /* | |
27 | * we can only have one finished io_u for sync io, since the depth | |
28 | * is always 1 | |
29 | */ | |
30 | if (list_empty(&td->io_u_busylist)) | |
31 | return 0; | |
32 | ||
33 | return 1; | |
34 | } | |
35 | ||
36 | static struct io_u *fio_netio_event(struct thread_data *td, int event) | |
37 | { | |
38 | struct net_data *nd = td->io_ops->data; | |
39 | ||
40 | assert(event == 0); | |
41 | ||
42 | return nd->last_io_u; | |
43 | } | |
44 | ||
45 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
46 | { | |
47 | struct net_data *nd = td->io_ops->data; | |
48 | struct fio_file *f = io_u->file; | |
49 | ||
7a6499da JA |
50 | /* |
51 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
52 | */ | |
53 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || | |
54 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
55 | printf("boo!\n"); | |
56 | td_verror(td, EINVAL); | |
57 | return 1; | |
ed92ac0c | 58 | } |
7a6499da | 59 | |
ed92ac0c JA |
60 | if (io_u->ddir == DDIR_SYNC) |
61 | return 0; | |
62 | if (io_u->offset == f->last_completed_pos) | |
63 | return 0; | |
64 | ||
e01547d2 JA |
65 | /* |
66 | * If offset is different from last end position, it's a seek. | |
67 | * As network io is purely sequential, we don't allow seeks. | |
68 | */ | |
ed92ac0c JA |
69 | td_verror(td, EINVAL); |
70 | return 1; | |
71 | } | |
72 | ||
73 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
74 | { | |
75 | struct net_data *nd = td->io_ops->data; | |
76 | struct fio_file *f = io_u->file; | |
d4f12dd0 | 77 | int ret, flags = 0; |
7a6499da JA |
78 | |
79 | if (io_u->ddir == DDIR_WRITE) { | |
7a6499da JA |
80 | /* |
81 | * if we are going to write more, set MSG_MORE | |
82 | */ | |
83 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < | |
84 | td->io_size) | |
85 | flags = MSG_MORE; | |
ed92ac0c | 86 | |
7a6499da | 87 | ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); |
d4f12dd0 JA |
88 | } else if (io_u->ddir == DDIR_READ) { |
89 | flags = MSG_WAITALL; | |
90 | ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
91 | } else | |
7a6499da | 92 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 93 | |
cec6b55d | 94 | if (ret != (int) io_u->xfer_buflen) { |
ed92ac0c | 95 | if (ret > 0) { |
cec6b55d JA |
96 | io_u->resid = io_u->xfer_buflen - ret; |
97 | io_u->error = 0; | |
98 | return ret; | |
ed92ac0c JA |
99 | } else |
100 | io_u->error = errno; | |
101 | } | |
102 | ||
103 | if (!io_u->error) | |
104 | nd->last_io_u = io_u; | |
105 | ||
106 | return io_u->error; | |
107 | } | |
108 | ||
109 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
e01547d2 | 110 | unsigned short port) |
ed92ac0c JA |
111 | { |
112 | struct sockaddr_in addr; | |
113 | struct fio_file *f; | |
2fc26981 | 114 | int i; |
ed92ac0c JA |
115 | |
116 | memset(&addr, 0, sizeof(addr)); | |
117 | addr.sin_family = AF_INET; | |
e01547d2 | 118 | addr.sin_port = htons(port); |
ed92ac0c JA |
119 | |
120 | if (inet_aton(host, &addr.sin_addr) != 1) { | |
7a6499da | 121 | struct hostent *hent; |
ed92ac0c | 122 | |
7a6499da | 123 | hent = gethostbyname(host); |
ed92ac0c | 124 | if (!hent) { |
6bedbfaf | 125 | td_verror(td, errno); |
ed92ac0c JA |
126 | return 1; |
127 | } | |
128 | ||
129 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
130 | } | |
131 | ||
2fc26981 | 132 | for_each_file(td, f, i) { |
6bedbfaf | 133 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
2fc26981 | 134 | if (f->fd < 0) { |
6bedbfaf | 135 | td_verror(td, errno); |
2fc26981 JA |
136 | return 1; |
137 | } | |
ed92ac0c | 138 | |
2fc26981 | 139 | if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
6bedbfaf | 140 | td_verror(td, errno); |
2fc26981 JA |
141 | return 1; |
142 | } | |
ed92ac0c JA |
143 | } |
144 | ||
145 | return 0; | |
146 | ||
147 | } | |
148 | ||
e01547d2 | 149 | static int fio_netio_setup_listen(struct thread_data *td, unsigned short port) |
ed92ac0c JA |
150 | { |
151 | struct sockaddr_in addr; | |
152 | socklen_t socklen; | |
2fc26981 JA |
153 | struct fio_file *f; |
154 | int fd, opt, i; | |
ed92ac0c | 155 | |
6bedbfaf | 156 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 157 | if (fd < 0) { |
6bedbfaf | 158 | td_verror(td, errno); |
ed92ac0c JA |
159 | return 1; |
160 | } | |
161 | ||
162 | opt = 1; | |
163 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
6bedbfaf | 164 | td_verror(td, errno); |
ed92ac0c JA |
165 | return 1; |
166 | } | |
6bedbfaf JA |
167 | #ifdef SO_REUSEPORT |
168 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
169 | td_verror(td, errno); | |
170 | return 1; | |
171 | } | |
172 | #endif | |
ed92ac0c JA |
173 | |
174 | memset(&addr, 0, sizeof(addr)); | |
175 | addr.sin_family = AF_INET; | |
176 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
e01547d2 | 177 | addr.sin_port = htons(port); |
ed92ac0c JA |
178 | |
179 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
6bedbfaf | 180 | td_verror(td, errno); |
ed92ac0c JA |
181 | return 1; |
182 | } | |
183 | if (listen(fd, 1) < 0) { | |
6bedbfaf | 184 | td_verror(td, errno); |
ed92ac0c JA |
185 | return 1; |
186 | } | |
187 | ||
2fc26981 JA |
188 | fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files); |
189 | ||
ed92ac0c | 190 | socklen = sizeof(addr); |
2fc26981 JA |
191 | for_each_file(td, f, i) { |
192 | f->fd = accept(fd, (struct sockaddr *) &addr, &socklen); | |
193 | if (f->fd < 0) { | |
6bedbfaf | 194 | td_verror(td, errno); |
2fc26981 JA |
195 | return 1; |
196 | } | |
ed92ac0c JA |
197 | } |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
202 | static int fio_netio_setup(struct thread_data *td) | |
203 | { | |
e01547d2 | 204 | char host[64], buf[128]; |
ed92ac0c | 205 | struct net_data *nd; |
e01547d2 | 206 | unsigned short port; |
2fc26981 | 207 | struct fio_file *f; |
ed92ac0c | 208 | char *sep; |
2fc26981 | 209 | int ret, i; |
ed92ac0c | 210 | |
7a6499da JA |
211 | if (!td->total_file_size) { |
212 | log_err("fio: need size= set\n"); | |
213 | return 1; | |
214 | } | |
215 | ||
ed92ac0c JA |
216 | /* |
217 | * work around for late init call | |
218 | */ | |
219 | if (td->io_ops->init(td)) | |
220 | return 1; | |
221 | ||
222 | nd = td->io_ops->data; | |
223 | ||
224 | if (td->iomix) { | |
225 | log_err("fio: network connections must be read OR write\n"); | |
226 | return 1; | |
227 | } | |
ed92ac0c JA |
228 | |
229 | strcpy(buf, td->filename); | |
230 | ||
231 | sep = strchr(buf, ':'); | |
232 | if (!sep) { | |
233 | log_err("fio: bad network host:port <<%s>>\n", td->filename); | |
234 | return 1; | |
235 | } | |
236 | ||
237 | *sep = '\0'; | |
238 | sep++; | |
239 | strcpy(host, buf); | |
e01547d2 | 240 | port = atoi(sep); |
ed92ac0c | 241 | |
85eb1d44 | 242 | if (td->ddir == DDIR_READ) { |
ed92ac0c JA |
243 | nd->send_to_net = 0; |
244 | ret = fio_netio_setup_listen(td, port); | |
245 | } else { | |
246 | nd->send_to_net = 1; | |
247 | ret = fio_netio_setup_connect(td, host, port); | |
248 | } | |
249 | ||
2fc26981 JA |
250 | if (ret) |
251 | return ret; | |
252 | ||
253 | td->io_size = td->total_file_size; | |
254 | td->total_io_size = td->io_size; | |
255 | ||
256 | for_each_file(td, f, i) { | |
257 | f->file_size = td->total_file_size / td->nr_files; | |
258 | f->real_file_size = f->file_size; | |
ed92ac0c JA |
259 | } |
260 | ||
2fc26981 | 261 | return 0; |
ed92ac0c JA |
262 | } |
263 | ||
264 | static void fio_netio_cleanup(struct thread_data *td) | |
265 | { | |
266 | if (td->io_ops->data) { | |
267 | free(td->io_ops->data); | |
268 | td->io_ops->data = NULL; | |
269 | } | |
270 | } | |
271 | ||
272 | static int fio_netio_init(struct thread_data *td) | |
273 | { | |
274 | struct net_data *nd; | |
275 | ||
e01547d2 JA |
276 | /* |
277 | * Hack to work-around the ->setup() function calling init on its | |
278 | * own, since it needs ->io_ops->data to be set up. | |
279 | */ | |
ed92ac0c JA |
280 | if (td->io_ops->data) |
281 | return 0; | |
282 | ||
283 | nd = malloc(sizeof(*nd)); | |
284 | nd->last_io_u = NULL; | |
285 | td->io_ops->data = nd; | |
286 | return 0; | |
287 | } | |
288 | ||
289 | static struct ioengine_ops ioengine = { | |
290 | .name = "net", | |
291 | .version = FIO_IOOPS_VERSION, | |
292 | .init = fio_netio_init, | |
293 | .prep = fio_netio_prep, | |
294 | .queue = fio_netio_queue, | |
295 | .getevents = fio_netio_getevents, | |
296 | .event = fio_netio_event, | |
297 | .cleanup = fio_netio_cleanup, | |
298 | .setup = fio_netio_setup, | |
299 | .flags = FIO_SYNCIO | FIO_NETIO, | |
300 | }; | |
301 | ||
302 | static void fio_init fio_netio_register(void) | |
303 | { | |
304 | register_ioengine(&ioengine); | |
305 | } | |
306 | ||
307 | static void fio_exit fio_netio_unregister(void) | |
308 | { | |
309 | unregister_ioengine(&ioengine); | |
310 | } |