Commit | Line | Data |
---|---|---|
ed92ac0c | 1 | /* |
da751ca9 JA |
2 | * net engine |
3 | * | |
4 | * IO engine that reads/writes to/from sockets. | |
5 | * | |
ed92ac0c JA |
6 | */ |
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
9 | #include <unistd.h> | |
10 | #include <errno.h> | |
11 | #include <assert.h> | |
12 | #include <netinet/in.h> | |
13 | #include <arpa/inet.h> | |
14 | #include <netdb.h> | |
5fdd124a | 15 | #include <sys/poll.h> |
ed92ac0c JA |
16 | |
17 | #include "../fio.h" | |
ed92ac0c | 18 | |
b5af8293 JA |
19 | struct netio_data { |
20 | int listenfd; | |
21 | int send_to_net; | |
22 | char host[64]; | |
23 | struct sockaddr_in addr; | |
24 | }; | |
ed92ac0c JA |
25 | |
26 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
27 | { | |
b5af8293 | 28 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c JA |
29 | struct fio_file *f = io_u->file; |
30 | ||
7a6499da JA |
31 | /* |
32 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
33 | */ | |
b5af8293 JA |
34 | if ((nd->send_to_net && io_u->ddir == DDIR_READ) || |
35 | (!nd->send_to_net && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 36 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 37 | return 1; |
ed92ac0c | 38 | } |
7a6499da | 39 | |
ed92ac0c JA |
40 | if (io_u->ddir == DDIR_SYNC) |
41 | return 0; | |
42 | if (io_u->offset == f->last_completed_pos) | |
43 | return 0; | |
44 | ||
e01547d2 JA |
45 | /* |
46 | * If offset is different from last end position, it's a seek. | |
47 | * As network io is purely sequential, we don't allow seeks. | |
48 | */ | |
e1161c32 | 49 | td_verror(td, EINVAL, "cannot seek"); |
ed92ac0c JA |
50 | return 1; |
51 | } | |
52 | ||
53 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
54 | { | |
ed92ac0c | 55 | struct fio_file *f = io_u->file; |
d4f12dd0 | 56 | int ret, flags = 0; |
7a6499da JA |
57 | |
58 | if (io_u->ddir == DDIR_WRITE) { | |
7a6499da JA |
59 | /* |
60 | * if we are going to write more, set MSG_MORE | |
61 | */ | |
62 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < | |
7bb48f84 | 63 | td->o.size) |
7a6499da | 64 | flags = MSG_MORE; |
ed92ac0c | 65 | |
7a6499da | 66 | ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); |
d4f12dd0 JA |
67 | } else if (io_u->ddir == DDIR_READ) { |
68 | flags = MSG_WAITALL; | |
69 | ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
70 | } else | |
7a6499da | 71 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 72 | |
cec6b55d | 73 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 74 | if (ret >= 0) { |
cec6b55d JA |
75 | io_u->resid = io_u->xfer_buflen - ret; |
76 | io_u->error = 0; | |
36167d82 | 77 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
78 | } else |
79 | io_u->error = errno; | |
80 | } | |
81 | ||
36167d82 | 82 | if (io_u->error) |
e1161c32 | 83 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 84 | |
36167d82 | 85 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
86 | } |
87 | ||
b5af8293 | 88 | static int fio_netio_connect(struct thread_data *td, struct fio_file *f) |
ed92ac0c | 89 | { |
b5af8293 | 90 | struct netio_data *nd = td->io_ops->data; |
ed92ac0c | 91 | |
b5af8293 JA |
92 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
93 | if (f->fd < 0) { | |
94 | td_verror(td, errno, "socket"); | |
95 | return 1; | |
ed92ac0c JA |
96 | } |
97 | ||
b5af8293 JA |
98 | if (connect(f->fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
99 | td_verror(td, errno, "connect"); | |
100 | return 1; | |
ed92ac0c JA |
101 | } |
102 | ||
103 | return 0; | |
ed92ac0c JA |
104 | } |
105 | ||
b5af8293 | 106 | static int fio_netio_accept(struct thread_data *td, struct fio_file *f) |
5fdd124a | 107 | { |
b5af8293 JA |
108 | struct netio_data *nd = td->io_ops->data; |
109 | socklen_t socklen = sizeof(nd->addr); | |
5fdd124a | 110 | struct pollfd pfd; |
b5af8293 | 111 | int ret; |
5fdd124a | 112 | |
6d86144d | 113 | log_info("fio: waiting for connection\n"); |
5fdd124a JA |
114 | |
115 | /* | |
116 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
117 | * have all connections. | |
118 | */ | |
b5af8293 JA |
119 | while (!td->terminate) { |
120 | pfd.fd = nd->listenfd; | |
5fdd124a JA |
121 | pfd.events = POLLIN; |
122 | ||
123 | ret = poll(&pfd, 1, -1); | |
124 | if (ret < 0) { | |
125 | if (errno == EINTR) | |
126 | continue; | |
127 | ||
e1161c32 | 128 | td_verror(td, errno, "poll"); |
5fdd124a JA |
129 | break; |
130 | } else if (!ret) | |
131 | continue; | |
132 | ||
0c09442b JA |
133 | /* |
134 | * should be impossible | |
135 | */ | |
136 | if (!(pfd.revents & POLLIN)) | |
137 | continue; | |
138 | ||
b5af8293 JA |
139 | f->fd = accept(nd->listenfd, (struct sockaddr *) &nd->addr, &socklen); |
140 | if (f->fd < 0) { | |
141 | td_verror(td, errno, "accept"); | |
142 | return 1; | |
143 | } | |
144 | break; | |
145 | } | |
5fdd124a | 146 | |
b5af8293 JA |
147 | return 0; |
148 | } | |
149 | ||
150 | ||
151 | static int fio_netio_open_file(struct thread_data *td, struct fio_file *f) | |
152 | { | |
153 | if (td_read(td)) | |
154 | return fio_netio_accept(td, f); | |
155 | else | |
156 | return fio_netio_connect(td, f); | |
157 | } | |
158 | ||
159 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
160 | unsigned short port) | |
161 | { | |
162 | struct netio_data *nd = td->io_ops->data; | |
163 | ||
164 | nd->addr.sin_family = AF_INET; | |
165 | nd->addr.sin_port = htons(port); | |
166 | ||
167 | if (inet_aton(host, &nd->addr.sin_addr) != 1) { | |
168 | struct hostent *hent; | |
169 | ||
170 | hent = gethostbyname(host); | |
171 | if (!hent) { | |
172 | td_verror(td, errno, "gethostbyname"); | |
173 | return 1; | |
5fdd124a | 174 | } |
b5af8293 JA |
175 | |
176 | memcpy(&nd->addr.sin_addr, hent->h_addr, 4); | |
5fdd124a JA |
177 | } |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
b5af8293 | 182 | static int fio_netio_setup_listen(struct thread_data *td, short port) |
ed92ac0c | 183 | { |
b5af8293 | 184 | struct netio_data *nd = td->io_ops->data; |
5fdd124a | 185 | int fd, opt; |
ed92ac0c | 186 | |
6bedbfaf | 187 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 188 | if (fd < 0) { |
e1161c32 | 189 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
190 | return 1; |
191 | } | |
192 | ||
193 | opt = 1; | |
194 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 195 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
196 | return 1; |
197 | } | |
6bedbfaf JA |
198 | #ifdef SO_REUSEPORT |
199 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 200 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
201 | return 1; |
202 | } | |
203 | #endif | |
ed92ac0c | 204 | |
b5af8293 JA |
205 | nd->addr.sin_family = AF_INET; |
206 | nd->addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
207 | nd->addr.sin_port = htons(port); | |
ed92ac0c | 208 | |
b5af8293 | 209 | if (bind(fd, (struct sockaddr *) &nd->addr, sizeof(nd->addr)) < 0) { |
e1161c32 | 210 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
211 | return 1; |
212 | } | |
213 | if (listen(fd, 1) < 0) { | |
e1161c32 | 214 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
215 | return 1; |
216 | } | |
217 | ||
b5af8293 JA |
218 | nd->listenfd = fd; |
219 | return 0; | |
ed92ac0c JA |
220 | } |
221 | ||
9bec88e1 | 222 | static int fio_netio_init(struct thread_data *td) |
ed92ac0c | 223 | { |
b5af8293 | 224 | struct netio_data *nd = td->io_ops->data; |
e01547d2 | 225 | unsigned short port; |
b5af8293 | 226 | char host[64], buf[128]; |
ed92ac0c | 227 | char *sep; |
af52b345 | 228 | int ret; |
ed92ac0c | 229 | |
413dd459 | 230 | if (td_rw(td)) { |
ed92ac0c JA |
231 | log_err("fio: network connections must be read OR write\n"); |
232 | return 1; | |
233 | } | |
ed92ac0c | 234 | |
2dc1bbeb | 235 | strcpy(buf, td->o.filename); |
ed92ac0c | 236 | |
9f9214f2 | 237 | sep = strchr(buf, '/'); |
ed92ac0c | 238 | if (!sep) { |
2dc1bbeb | 239 | log_err("fio: bad network host/port <<%s>>\n", td->o.filename); |
ed92ac0c JA |
240 | return 1; |
241 | } | |
242 | ||
243 | *sep = '\0'; | |
244 | sep++; | |
245 | strcpy(host, buf); | |
e01547d2 | 246 | port = atoi(sep); |
ed92ac0c | 247 | |
413dd459 | 248 | if (td_read(td)) { |
b5af8293 | 249 | nd->send_to_net = 0; |
ed92ac0c JA |
250 | ret = fio_netio_setup_listen(td, port); |
251 | } else { | |
b5af8293 | 252 | nd->send_to_net = 1; |
ed92ac0c JA |
253 | ret = fio_netio_setup_connect(td, host, port); |
254 | } | |
255 | ||
7bb48f84 | 256 | return ret; |
ed92ac0c JA |
257 | } |
258 | ||
b5af8293 | 259 | static void fio_netio_cleanup(struct thread_data *td) |
9bec88e1 | 260 | { |
b5af8293 JA |
261 | struct netio_data *nd = td->io_ops->data; |
262 | ||
263 | if (nd) { | |
264 | free(nd); | |
265 | td->io_ops->data = NULL; | |
266 | } | |
267 | } | |
268 | ||
269 | static int fio_netio_setup(struct thread_data *td) | |
270 | { | |
7bb48f84 | 271 | struct netio_data *nd; |
7bb48f84 JA |
272 | |
273 | if (!td->io_ops->data) { | |
274 | nd = malloc(sizeof(*nd));; | |
275 | ||
276 | memset(nd, 0, sizeof(*nd)); | |
277 | nd->listenfd = -1; | |
278 | td->io_ops->data = nd; | |
7bb48f84 | 279 | } |
b5af8293 | 280 | |
9bec88e1 JA |
281 | return 0; |
282 | } | |
283 | ||
ed92ac0c JA |
284 | static struct ioengine_ops ioengine = { |
285 | .name = "net", | |
286 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
287 | .prep = fio_netio_prep, |
288 | .queue = fio_netio_queue, | |
ed92ac0c | 289 | .setup = fio_netio_setup, |
9bec88e1 | 290 | .init = fio_netio_init, |
b5af8293 JA |
291 | .cleanup = fio_netio_cleanup, |
292 | .open_file = fio_netio_open_file, | |
293 | .close_file = generic_close_file, | |
294 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, | |
ed92ac0c JA |
295 | }; |
296 | ||
297 | static void fio_init fio_netio_register(void) | |
298 | { | |
299 | register_ioengine(&ioengine); | |
300 | } | |
301 | ||
302 | static void fio_exit fio_netio_unregister(void) | |
303 | { | |
304 | unregister_ioengine(&ioengine); | |
305 | } |