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> | |
5fdd124a | 12 | #include <sys/poll.h> |
ed92ac0c JA |
13 | |
14 | #include "../fio.h" | |
15 | #include "../os.h" | |
16 | ||
36167d82 | 17 | #define send_to_net(td) ((td)->io_ops->priv) |
ed92ac0c JA |
18 | |
19 | static int fio_netio_prep(struct thread_data *td, struct io_u *io_u) | |
20 | { | |
ed92ac0c JA |
21 | struct fio_file *f = io_u->file; |
22 | ||
7a6499da JA |
23 | /* |
24 | * Make sure we don't see spurious reads to a receiver, and vice versa | |
25 | */ | |
36167d82 JA |
26 | if ((send_to_net(td) && io_u->ddir == DDIR_READ) || |
27 | (!send_to_net(td) && io_u->ddir == DDIR_WRITE)) { | |
e1161c32 | 28 | td_verror(td, EINVAL, "bad direction"); |
7a6499da | 29 | return 1; |
ed92ac0c | 30 | } |
7a6499da | 31 | |
ed92ac0c JA |
32 | if (io_u->ddir == DDIR_SYNC) |
33 | return 0; | |
34 | if (io_u->offset == f->last_completed_pos) | |
35 | return 0; | |
36 | ||
e01547d2 JA |
37 | /* |
38 | * If offset is different from last end position, it's a seek. | |
39 | * As network io is purely sequential, we don't allow seeks. | |
40 | */ | |
e1161c32 | 41 | td_verror(td, EINVAL, "cannot seek"); |
ed92ac0c JA |
42 | return 1; |
43 | } | |
44 | ||
45 | static int fio_netio_queue(struct thread_data *td, struct io_u *io_u) | |
46 | { | |
ed92ac0c | 47 | struct fio_file *f = io_u->file; |
d4f12dd0 | 48 | int ret, flags = 0; |
7a6499da JA |
49 | |
50 | if (io_u->ddir == DDIR_WRITE) { | |
7a6499da JA |
51 | /* |
52 | * if we are going to write more, set MSG_MORE | |
53 | */ | |
54 | if (td->this_io_bytes[DDIR_WRITE] + io_u->xfer_buflen < | |
55 | td->io_size) | |
56 | flags = MSG_MORE; | |
ed92ac0c | 57 | |
7a6499da | 58 | ret = send(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); |
d4f12dd0 JA |
59 | } else if (io_u->ddir == DDIR_READ) { |
60 | flags = MSG_WAITALL; | |
61 | ret = recv(f->fd, io_u->xfer_buf, io_u->xfer_buflen, flags); | |
62 | } else | |
7a6499da | 63 | ret = 0; /* must be a SYNC */ |
ed92ac0c | 64 | |
cec6b55d | 65 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 66 | if (ret >= 0) { |
cec6b55d JA |
67 | io_u->resid = io_u->xfer_buflen - ret; |
68 | io_u->error = 0; | |
36167d82 | 69 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
70 | } else |
71 | io_u->error = errno; | |
72 | } | |
73 | ||
36167d82 | 74 | if (io_u->error) |
e1161c32 | 75 | td_verror(td, io_u->error, "xfer"); |
ed92ac0c | 76 | |
36167d82 | 77 | return FIO_Q_COMPLETED; |
ed92ac0c JA |
78 | } |
79 | ||
80 | static int fio_netio_setup_connect(struct thread_data *td, const char *host, | |
e01547d2 | 81 | unsigned short port) |
ed92ac0c JA |
82 | { |
83 | struct sockaddr_in addr; | |
84 | struct fio_file *f; | |
2fc26981 | 85 | int i; |
ed92ac0c JA |
86 | |
87 | memset(&addr, 0, sizeof(addr)); | |
88 | addr.sin_family = AF_INET; | |
e01547d2 | 89 | addr.sin_port = htons(port); |
ed92ac0c JA |
90 | |
91 | if (inet_aton(host, &addr.sin_addr) != 1) { | |
7a6499da | 92 | struct hostent *hent; |
ed92ac0c | 93 | |
7a6499da | 94 | hent = gethostbyname(host); |
ed92ac0c | 95 | if (!hent) { |
e1161c32 | 96 | td_verror(td, errno, "gethostbyname"); |
ed92ac0c JA |
97 | return 1; |
98 | } | |
99 | ||
100 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
101 | } | |
102 | ||
2fc26981 | 103 | for_each_file(td, f, i) { |
6bedbfaf | 104 | f->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
2fc26981 | 105 | if (f->fd < 0) { |
e1161c32 | 106 | td_verror(td, errno, "socket"); |
2fc26981 JA |
107 | return 1; |
108 | } | |
ed92ac0c | 109 | |
2fc26981 | 110 | if (connect(f->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
e1161c32 | 111 | td_verror(td, errno, "connect"); |
2fc26981 JA |
112 | return 1; |
113 | } | |
ed92ac0c JA |
114 | } |
115 | ||
116 | return 0; | |
117 | ||
118 | } | |
119 | ||
5fdd124a JA |
120 | static int fio_netio_accept_connections(struct thread_data *td, int fd, |
121 | struct sockaddr_in *addr) | |
122 | { | |
123 | socklen_t socklen = sizeof(*addr); | |
124 | unsigned int accepts = 0; | |
125 | struct pollfd pfd; | |
126 | ||
127 | fprintf(f_out, "fio: waiting for %u connections\n", td->nr_files); | |
128 | ||
129 | /* | |
130 | * Accept loop. poll for incoming events, accept them. Repeat until we | |
131 | * have all connections. | |
132 | */ | |
133 | while (!td->terminate && accepts < td->nr_files) { | |
134 | struct fio_file *f; | |
135 | int ret, i; | |
136 | ||
137 | pfd.fd = fd; | |
138 | pfd.events = POLLIN; | |
139 | ||
140 | ret = poll(&pfd, 1, -1); | |
141 | if (ret < 0) { | |
142 | if (errno == EINTR) | |
143 | continue; | |
144 | ||
e1161c32 | 145 | td_verror(td, errno, "poll"); |
5fdd124a JA |
146 | break; |
147 | } else if (!ret) | |
148 | continue; | |
149 | ||
0c09442b JA |
150 | /* |
151 | * should be impossible | |
152 | */ | |
153 | if (!(pfd.revents & POLLIN)) | |
154 | continue; | |
155 | ||
5fdd124a JA |
156 | for_each_file(td, f, i) { |
157 | if (f->fd != -1) | |
158 | continue; | |
159 | ||
160 | f->fd = accept(fd, (struct sockaddr *) addr, &socklen); | |
161 | if (f->fd < 0) { | |
e1161c32 | 162 | td_verror(td, errno, "accept"); |
5fdd124a JA |
163 | return 1; |
164 | } | |
165 | accepts++; | |
166 | break; | |
167 | } | |
168 | } | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
e01547d2 | 173 | static int fio_netio_setup_listen(struct thread_data *td, unsigned short port) |
ed92ac0c JA |
174 | { |
175 | struct sockaddr_in addr; | |
5fdd124a | 176 | int fd, opt; |
ed92ac0c | 177 | |
6bedbfaf | 178 | fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
ed92ac0c | 179 | if (fd < 0) { |
e1161c32 | 180 | td_verror(td, errno, "socket"); |
ed92ac0c JA |
181 | return 1; |
182 | } | |
183 | ||
184 | opt = 1; | |
185 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 186 | td_verror(td, errno, "setsockopt"); |
ed92ac0c JA |
187 | return 1; |
188 | } | |
6bedbfaf JA |
189 | #ifdef SO_REUSEPORT |
190 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { | |
e1161c32 | 191 | td_verror(td, errno, "setsockopt"); |
6bedbfaf JA |
192 | return 1; |
193 | } | |
194 | #endif | |
ed92ac0c JA |
195 | |
196 | memset(&addr, 0, sizeof(addr)); | |
197 | addr.sin_family = AF_INET; | |
198 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
e01547d2 | 199 | addr.sin_port = htons(port); |
ed92ac0c JA |
200 | |
201 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
e1161c32 | 202 | td_verror(td, errno, "bind"); |
ed92ac0c JA |
203 | return 1; |
204 | } | |
205 | if (listen(fd, 1) < 0) { | |
e1161c32 | 206 | td_verror(td, errno, "listen"); |
ed92ac0c JA |
207 | return 1; |
208 | } | |
209 | ||
5fdd124a | 210 | return fio_netio_accept_connections(td, fd, &addr); |
ed92ac0c JA |
211 | } |
212 | ||
213 | static int fio_netio_setup(struct thread_data *td) | |
214 | { | |
e01547d2 | 215 | char host[64], buf[128]; |
e01547d2 | 216 | unsigned short port; |
2fc26981 | 217 | struct fio_file *f; |
ed92ac0c | 218 | char *sep; |
2fc26981 | 219 | int ret, i; |
ed92ac0c | 220 | |
7a6499da JA |
221 | if (!td->total_file_size) { |
222 | log_err("fio: need size= set\n"); | |
223 | return 1; | |
224 | } | |
225 | ||
413dd459 | 226 | if (td_rw(td)) { |
ed92ac0c JA |
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 | 243 | |
413dd459 | 244 | if (td_read(td)) { |
36167d82 | 245 | send_to_net(td) = 0; |
ed92ac0c JA |
246 | ret = fio_netio_setup_listen(td, port); |
247 | } else { | |
36167d82 | 248 | send_to_net(td) = 1; |
ed92ac0c JA |
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 | ||
ed92ac0c JA |
266 | static struct ioengine_ops ioengine = { |
267 | .name = "net", | |
268 | .version = FIO_IOOPS_VERSION, | |
ed92ac0c JA |
269 | .prep = fio_netio_prep, |
270 | .queue = fio_netio_queue, | |
ed92ac0c JA |
271 | .setup = fio_netio_setup, |
272 | .flags = FIO_SYNCIO | FIO_NETIO, | |
273 | }; | |
274 | ||
275 | static void fio_init fio_netio_register(void) | |
276 | { | |
277 | register_ioengine(&ioengine); | |
278 | } | |
279 | ||
280 | static void fio_exit fio_netio_unregister(void) | |
281 | { | |
282 | unregister_ioengine(&ioengine); | |
283 | } |