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 | ||
51 | if (nd->send_to_net) { | |
52 | if (io_u->ddir == DDIR_READ) { | |
53 | td_verror(td, EINVAL); | |
54 | return 1; | |
55 | } | |
56 | } else { | |
57 | if (io_u->ddir == DDIR_WRITE) { | |
58 | td_verror(td, EINVAL); | |
59 | return 1; | |
60 | } | |
61 | } | |
62 | ||
63 | if (io_u->ddir == DDIR_SYNC) | |
64 | return 0; | |
65 | if (io_u->offset == f->last_completed_pos) | |
66 | return 0; | |
67 | ||
e01547d2 JA |
68 | /* |
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. | |
71 | */ | |
ed92ac0c JA |
72 | td_verror(td, EINVAL); |
73 | return 1; | |
74 | } | |
75 | ||
76 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
77 | { | |
78 | struct net_data *nd = td->io_ops->data; | |
79 | struct fio_file *f = io_u->file; | |
80 | unsigned int ret = 0; | |
81 | ||
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); | |
86 | ||
87 | if (ret != io_u->buflen) { | |
88 | if (ret > 0) { | |
89 | io_u->resid = io_u->buflen - ret; | |
90 | io_u->error = EIO; | |
91 | } else | |
92 | io_u->error = errno; | |
93 | } | |
94 | ||
95 | if (!io_u->error) | |
96 | nd->last_io_u = io_u; | |
97 | ||
98 | return io_u->error; | |
99 | } | |
100 | ||
101 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
e01547d2 | 102 | unsigned short port) |
ed92ac0c JA |
103 | { |
104 | struct sockaddr_in addr; | |
105 | struct fio_file *f; | |
106 | ||
107 | memset(&addr, 0, sizeof(addr)); | |
108 | addr.sin_family = AF_INET; | |
e01547d2 | 109 | addr.sin_port = htons(port); |
ed92ac0c JA |
110 | |
111 | if (inet_aton(host, &addr.sin_addr) != 1) { | |
112 | struct hostent *hent = gethostbyname(host); | |
113 | ||
114 | if (!hent) { | |
115 | td_vmsg(td, errno, "gethostbyname"); | |
116 | return 1; | |
117 | } | |
118 | ||
119 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
120 | } | |
121 | ||
122 | f = &td->files[0]; | |
123 | ||
124 | f->fd = socket(AF_INET, SOCK_STREAM, 0); | |
125 | if (f->fd < 0) { | |
126 | td_vmsg(td, errno, "socket"); | |
127 | return 1; | |
128 | } | |
129 | ||
130 | if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
131 | td_vmsg(td, errno, "connect"); | |
132 | return 1; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | ||
137 | } | |
138 | ||
e01547d2 | 139 | static int fio_netio_setup_listen(struct thread_data *td, unsigned short port) |
ed92ac0c JA |
140 | { |
141 | struct sockaddr_in addr; | |
142 | socklen_t socklen; | |
143 | int fd, opt; | |
144 | ||
145 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
146 | if (fd < 0) { | |
147 | td_vmsg(td, errno, "socket"); | |
148 | return 1; | |
149 | } | |
150 | ||
151 | opt = 1; | |
152 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
153 | td_vmsg(td, errno, "setsockopt"); | |
154 | return 1; | |
155 | } | |
156 | ||
157 | memset(&addr, 0, sizeof(addr)); | |
158 | addr.sin_family = AF_INET; | |
159 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
e01547d2 | 160 | addr.sin_port = htons(port); |
ed92ac0c JA |
161 | |
162 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
163 | td_vmsg(td, errno, "bind"); | |
164 | return 1; | |
165 | } | |
166 | if (listen(fd, 1) < 0) { | |
167 | td_vmsg(td, errno, "listen"); | |
168 | return 1; | |
169 | } | |
170 | ||
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"); | |
175 | return 1; | |
176 | } | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static int fio_netio_setup(struct thread_data *td) | |
182 | { | |
e01547d2 | 183 | char host[64], buf[128]; |
ed92ac0c | 184 | struct net_data *nd; |
e01547d2 | 185 | unsigned short port; |
ed92ac0c JA |
186 | char *sep; |
187 | int ret; | |
188 | ||
189 | /* | |
190 | * work around for late init call | |
191 | */ | |
192 | if (td->io_ops->init(td)) | |
193 | return 1; | |
194 | ||
195 | nd = td->io_ops->data; | |
196 | ||
197 | if (td->iomix) { | |
198 | log_err("fio: network connections must be read OR write\n"); | |
199 | return 1; | |
200 | } | |
201 | if (td->nr_files > 1) { | |
202 | log_err("fio: only one file supported for network\n"); | |
203 | return 1; | |
204 | } | |
205 | ||
206 | strcpy(buf, td->filename); | |
207 | ||
208 | sep = strchr(buf, ':'); | |
209 | if (!sep) { | |
210 | log_err("fio: bad network host:port <<%s>>\n", td->filename); | |
211 | return 1; | |
212 | } | |
213 | ||
214 | *sep = '\0'; | |
215 | sep++; | |
216 | strcpy(host, buf); | |
e01547d2 | 217 | port = atoi(sep); |
ed92ac0c JA |
218 | |
219 | if (td->ddir == READ) { | |
220 | nd->send_to_net = 0; | |
221 | ret = fio_netio_setup_listen(td, port); | |
222 | } else { | |
223 | nd->send_to_net = 1; | |
224 | ret = fio_netio_setup_connect(td, host, port); | |
225 | } | |
226 | ||
227 | if (!ret) { | |
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; | |
231 | } | |
232 | ||
233 | return ret; | |
234 | } | |
235 | ||
236 | static void fio_netio_cleanup(struct thread_data *td) | |
237 | { | |
238 | if (td->io_ops->data) { | |
239 | free(td->io_ops->data); | |
240 | td->io_ops->data = NULL; | |
241 | } | |
242 | } | |
243 | ||
244 | static int fio_netio_init(struct thread_data *td) | |
245 | { | |
246 | struct net_data *nd; | |
247 | ||
e01547d2 JA |
248 | /* |
249 | * Hack to work-around the ->setup() function calling init on its | |
250 | * own, since it needs ->io_ops->data to be set up. | |
251 | */ | |
ed92ac0c JA |
252 | if (td->io_ops->data) |
253 | return 0; | |
254 | ||
255 | nd = malloc(sizeof(*nd)); | |
256 | nd->last_io_u = NULL; | |
257 | td->io_ops->data = nd; | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static struct ioengine_ops ioengine = { | |
262 | .name = "net", | |
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, | |
272 | }; | |
273 | ||
274 | static void fio_init fio_netio_register(void) | |
275 | { | |
276 | register_ioengine(&ioengine); | |
277 | } | |
278 | ||
279 | static void fio_exit fio_netio_unregister(void) | |
280 | { | |
281 | unregister_ioengine(&ioengine); | |
282 | } |