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Commit | Line | Data |
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42281ac9 MM |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
2744d920 | 24 | #include "qemu/osdep.h" |
42281ac9 | 25 | |
1422e32d | 26 | #include "net/net.h" |
a245fc18 | 27 | #include "clients.h" |
83c9089e | 28 | #include "monitor/monitor.h" |
da34e65c | 29 | #include "qapi/error.h" |
1de7afc9 PB |
30 | #include "qemu/error-report.h" |
31 | #include "qemu/option.h" | |
32 | #include "qemu/sockets.h" | |
33 | #include "qemu/iov.h" | |
6a1751b7 | 34 | #include "qemu/main-loop.h" |
42281ac9 MM |
35 | |
36 | typedef struct NetSocketState { | |
4e68f7a0 | 37 | NetClientState nc; |
011de2b5 | 38 | int listen_fd; |
42281ac9 | 39 | int fd; |
16a3df40 | 40 | SocketReadState rs; |
45a7f54a | 41 | unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */ |
42281ac9 | 42 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
863f678f SH |
43 | IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ |
44 | bool read_poll; /* waiting to receive data? */ | |
45 | bool write_poll; /* waiting to transmit data? */ | |
42281ac9 MM |
46 | } NetSocketState; |
47 | ||
011de2b5 | 48 | static void net_socket_accept(void *opaque); |
863f678f SH |
49 | static void net_socket_writable(void *opaque); |
50 | ||
863f678f SH |
51 | static void net_socket_update_fd_handler(NetSocketState *s) |
52 | { | |
82e1cc4b FZ |
53 | qemu_set_fd_handler(s->fd, |
54 | s->read_poll ? s->send_fn : NULL, | |
55 | s->write_poll ? net_socket_writable : NULL, | |
56 | s); | |
863f678f SH |
57 | } |
58 | ||
59 | static void net_socket_read_poll(NetSocketState *s, bool enable) | |
60 | { | |
61 | s->read_poll = enable; | |
62 | net_socket_update_fd_handler(s); | |
63 | } | |
64 | ||
65 | static void net_socket_write_poll(NetSocketState *s, bool enable) | |
66 | { | |
67 | s->write_poll = enable; | |
68 | net_socket_update_fd_handler(s); | |
69 | } | |
70 | ||
71 | static void net_socket_writable(void *opaque) | |
72 | { | |
73 | NetSocketState *s = opaque; | |
74 | ||
75 | net_socket_write_poll(s, false); | |
76 | ||
77 | qemu_flush_queued_packets(&s->nc); | |
78 | } | |
42281ac9 | 79 | |
4e68f7a0 | 80 | static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
42281ac9 | 81 | { |
564f63e3 | 82 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
45a7f54a SH |
83 | uint32_t len = htonl(size); |
84 | struct iovec iov[] = { | |
85 | { | |
86 | .iov_base = &len, | |
87 | .iov_len = sizeof(len), | |
88 | }, { | |
89 | .iov_base = (void *)buf, | |
90 | .iov_len = size, | |
91 | }, | |
92 | }; | |
93 | size_t remaining; | |
94 | ssize_t ret; | |
42281ac9 | 95 | |
45a7f54a SH |
96 | remaining = iov_size(iov, 2) - s->send_index; |
97 | ret = iov_send(s->fd, iov, 2, s->send_index, remaining); | |
98 | ||
99 | if (ret == -1 && errno == EAGAIN) { | |
100 | ret = 0; /* handled further down */ | |
101 | } | |
102 | if (ret == -1) { | |
103 | s->send_index = 0; | |
104 | return -errno; | |
105 | } | |
106 | if (ret < (ssize_t)remaining) { | |
107 | s->send_index += ret; | |
108 | net_socket_write_poll(s, true); | |
109 | return 0; | |
110 | } | |
111 | s->send_index = 0; | |
112 | return size; | |
42281ac9 MM |
113 | } |
114 | ||
4e68f7a0 | 115 | static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size) |
42281ac9 | 116 | { |
564f63e3 | 117 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
213fd508 SH |
118 | ssize_t ret; |
119 | ||
37b0b24e NI |
120 | ret = RETRY_ON_EINTR( |
121 | s->dgram_dst.sin_family != AF_UNIX ? | |
122 | sendto(s->fd, buf, size, 0, | |
123 | (struct sockaddr *)&s->dgram_dst, | |
124 | sizeof(s->dgram_dst)) : | |
125 | send(s->fd, buf, size, 0) | |
126 | ); | |
213fd508 SH |
127 | |
128 | if (ret == -1 && errno == EAGAIN) { | |
129 | net_socket_write_poll(s, true); | |
130 | return 0; | |
131 | } | |
132 | return ret; | |
42281ac9 MM |
133 | } |
134 | ||
6e99c631 FZ |
135 | static void net_socket_send_completed(NetClientState *nc, ssize_t len) |
136 | { | |
137 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); | |
138 | ||
139 | if (!s->read_poll) { | |
140 | net_socket_read_poll(s, true); | |
141 | } | |
142 | } | |
143 | ||
16a3df40 ZC |
144 | static void net_socket_rs_finalize(SocketReadState *rs) |
145 | { | |
146 | NetSocketState *s = container_of(rs, NetSocketState, rs); | |
147 | ||
148 | if (qemu_send_packet_async(&s->nc, rs->buf, | |
149 | rs->packet_len, | |
150 | net_socket_send_completed) == 0) { | |
151 | net_socket_read_poll(s, false); | |
152 | } | |
153 | } | |
154 | ||
42281ac9 MM |
155 | static void net_socket_send(void *opaque) |
156 | { | |
157 | NetSocketState *s = opaque; | |
b16a44e1 | 158 | int size; |
16a3df40 | 159 | int ret; |
d32fcad3 | 160 | uint8_t buf1[NET_BUFSIZE]; |
42281ac9 MM |
161 | const uint8_t *buf; |
162 | ||
e7b79428 | 163 | size = recv(s->fd, buf1, sizeof(buf1), 0); |
42281ac9 | 164 | if (size < 0) { |
b16a44e1 | 165 | if (errno != EWOULDBLOCK) |
42281ac9 MM |
166 | goto eoc; |
167 | } else if (size == 0) { | |
168 | /* end of connection */ | |
169 | eoc: | |
863f678f SH |
170 | net_socket_read_poll(s, false); |
171 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
172 | if (s->listen_fd != -1) { |
173 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
174 | } | |
42281ac9 | 175 | closesocket(s->fd); |
011de2b5 ZYW |
176 | |
177 | s->fd = -1; | |
3cde5ea2 | 178 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
011de2b5 | 179 | s->nc.link_down = true; |
ac149498 | 180 | qemu_set_info_str(&s->nc, "%s", ""); |
011de2b5 | 181 | |
42281ac9 MM |
182 | return; |
183 | } | |
184 | buf = buf1; | |
42281ac9 | 185 | |
16a3df40 ZC |
186 | ret = net_fill_rstate(&s->rs, buf, size); |
187 | ||
188 | if (ret == -1) { | |
189 | goto eoc; | |
42281ac9 MM |
190 | } |
191 | } | |
192 | ||
193 | static void net_socket_send_dgram(void *opaque) | |
194 | { | |
195 | NetSocketState *s = opaque; | |
196 | int size; | |
197 | ||
e7b79428 | 198 | size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); |
42281ac9 MM |
199 | if (size < 0) |
200 | return; | |
201 | if (size == 0) { | |
202 | /* end of connection */ | |
863f678f SH |
203 | net_socket_read_poll(s, false); |
204 | net_socket_write_poll(s, false); | |
42281ac9 MM |
205 | return; |
206 | } | |
16a3df40 | 207 | if (qemu_send_packet_async(&s->nc, s->rs.buf, size, |
6e99c631 FZ |
208 | net_socket_send_completed) == 0) { |
209 | net_socket_read_poll(s, false); | |
210 | } | |
42281ac9 MM |
211 | } |
212 | ||
c37f0bb1 MZ |
213 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, |
214 | struct in_addr *localaddr, | |
215 | Error **errp) | |
42281ac9 MM |
216 | { |
217 | struct ip_mreq imr; | |
218 | int fd; | |
219 | int val, ret; | |
23ddf2bb BS |
220 | #ifdef __OpenBSD__ |
221 | unsigned char loop; | |
222 | #else | |
223 | int loop; | |
224 | #endif | |
225 | ||
42281ac9 | 226 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
c37f0bb1 MZ |
227 | error_setg(errp, "specified mcastaddr %s (0x%08x) " |
228 | "does not contain a multicast address", | |
229 | inet_ntoa(mcastaddr->sin_addr), | |
230 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
842480d4 | 231 | return -1; |
42281ac9 | 232 | } |
c37f0bb1 | 233 | |
40ff6d7e | 234 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
42281ac9 | 235 | if (fd < 0) { |
c37f0bb1 | 236 | error_setg_errno(errp, errno, "can't create datagram socket"); |
42281ac9 MM |
237 | return -1; |
238 | } | |
239 | ||
bcbe92fb SO |
240 | /* Allow multiple sockets to bind the same multicast ip and port by setting |
241 | * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set | |
242 | * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR | |
243 | * only on posix systems. | |
244 | */ | |
42281ac9 | 245 | val = 1; |
e7b79428 | 246 | ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
42281ac9 | 247 | if (ret < 0) { |
c37f0bb1 MZ |
248 | error_setg_errno(errp, errno, |
249 | "can't set socket option SO_REUSEADDR"); | |
842480d4 | 250 | goto fail; |
42281ac9 MM |
251 | } |
252 | ||
253 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
254 | if (ret < 0) { | |
c37f0bb1 MZ |
255 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
256 | inet_ntoa(mcastaddr->sin_addr)); | |
42281ac9 MM |
257 | goto fail; |
258 | } | |
259 | ||
260 | /* Add host to multicast group */ | |
261 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
3a75e74c MR |
262 | if (localaddr) { |
263 | imr.imr_interface = *localaddr; | |
264 | } else { | |
265 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
266 | } | |
42281ac9 | 267 | |
e7b79428 MAL |
268 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
269 | &imr, sizeof(struct ip_mreq)); | |
42281ac9 | 270 | if (ret < 0) { |
c37f0bb1 MZ |
271 | error_setg_errno(errp, errno, |
272 | "can't add socket to multicast group %s", | |
273 | inet_ntoa(imr.imr_multiaddr)); | |
842480d4 | 274 | goto fail; |
42281ac9 MM |
275 | } |
276 | ||
277 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
23ddf2bb | 278 | loop = 1; |
e7b79428 MAL |
279 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
280 | &loop, sizeof(loop)); | |
42281ac9 | 281 | if (ret < 0) { |
c37f0bb1 MZ |
282 | error_setg_errno(errp, errno, |
283 | "can't force multicast message to loopback"); | |
842480d4 | 284 | goto fail; |
42281ac9 MM |
285 | } |
286 | ||
3a75e74c MR |
287 | /* If a bind address is given, only send packets from that address */ |
288 | if (localaddr != NULL) { | |
e7b79428 MAL |
289 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
290 | localaddr, sizeof(*localaddr)); | |
3a75e74c | 291 | if (ret < 0) { |
c37f0bb1 MZ |
292 | error_setg_errno(errp, errno, |
293 | "can't set the default network send interface"); | |
3a75e74c MR |
294 | goto fail; |
295 | } | |
296 | } | |
297 | ||
ff5927ba | 298 | qemu_socket_set_nonblock(fd); |
42281ac9 MM |
299 | return fd; |
300 | fail: | |
301 | if (fd >= 0) | |
302 | closesocket(fd); | |
303 | return -1; | |
304 | } | |
305 | ||
4e68f7a0 | 306 | static void net_socket_cleanup(NetClientState *nc) |
42281ac9 | 307 | { |
564f63e3 | 308 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
011de2b5 | 309 | if (s->fd != -1) { |
863f678f SH |
310 | net_socket_read_poll(s, false); |
311 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
312 | close(s->fd); |
313 | s->fd = -1; | |
314 | } | |
315 | if (s->listen_fd != -1) { | |
316 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); | |
317 | closesocket(s->listen_fd); | |
318 | s->listen_fd = -1; | |
319 | } | |
42281ac9 MM |
320 | } |
321 | ||
564f63e3 | 322 | static NetClientInfo net_dgram_socket_info = { |
f394b2e2 | 323 | .type = NET_CLIENT_DRIVER_SOCKET, |
564f63e3 MM |
324 | .size = sizeof(NetSocketState), |
325 | .receive = net_socket_receive_dgram, | |
326 | .cleanup = net_socket_cleanup, | |
327 | }; | |
328 | ||
4e68f7a0 | 329 | static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, |
42281ac9 MM |
330 | const char *model, |
331 | const char *name, | |
0f8c289a | 332 | int fd, int is_connected, |
c37f0bb1 MZ |
333 | const char *mcast, |
334 | Error **errp) | |
42281ac9 MM |
335 | { |
336 | struct sockaddr_in saddr; | |
337 | int newfd; | |
4e68f7a0 | 338 | NetClientState *nc; |
42281ac9 | 339 | NetSocketState *s; |
fdec16e3 MAL |
340 | SocketAddress *sa; |
341 | SocketAddressType sa_type; | |
342 | ||
343 | sa = socket_local_address(fd, errp); | |
344 | if (!sa) { | |
345 | return NULL; | |
346 | } | |
347 | sa_type = sa->type; | |
348 | qapi_free_SocketAddress(sa); | |
42281ac9 MM |
349 | |
350 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
351 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
352 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
353 | */ | |
354 | ||
0f8c289a | 355 | if (is_connected && mcast != NULL) { |
bcd4dfd6 | 356 | if (parse_host_port(&saddr, mcast, errp) < 0) { |
0f8c289a JF |
357 | goto err; |
358 | } | |
842480d4 SH |
359 | /* must be bound */ |
360 | if (saddr.sin_addr.s_addr == 0) { | |
c37f0bb1 | 361 | error_setg(errp, "can't setup multicast destination address"); |
e5d1fca0 | 362 | goto err; |
842480d4 SH |
363 | } |
364 | /* clone dgram socket */ | |
c37f0bb1 | 365 | newfd = net_socket_mcast_create(&saddr, NULL, errp); |
842480d4 | 366 | if (newfd < 0) { |
e5d1fca0 | 367 | goto err; |
842480d4 SH |
368 | } |
369 | /* clone newfd to fd, close newfd */ | |
370 | dup2(newfd, fd); | |
371 | close(newfd); | |
372 | ||
42281ac9 MM |
373 | } |
374 | ||
ab5f3f84 | 375 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); |
564f63e3 | 376 | |
564f63e3 MM |
377 | s = DO_UPCAST(NetSocketState, nc, nc); |
378 | ||
42281ac9 | 379 | s->fd = fd; |
011de2b5 | 380 | s->listen_fd = -1; |
863f678f | 381 | s->send_fn = net_socket_send_dgram; |
3cde5ea2 | 382 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
863f678f | 383 | net_socket_read_poll(s, true); |
42281ac9 MM |
384 | |
385 | /* mcast: save bound address as dst */ | |
bb160b57 | 386 | if (is_connected && mcast != NULL) { |
e34cde35 | 387 | s->dgram_dst = saddr; |
53b85d95 LV |
388 | qemu_set_info_str(nc, "socket: fd=%d (cloned mcast=%s:%d)", fd, |
389 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
8db804ac | 390 | } else { |
fdec16e3 MAL |
391 | if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { |
392 | s->dgram_dst.sin_family = AF_UNIX; | |
393 | } | |
d89b4f83 | 394 | |
53b85d95 LV |
395 | qemu_set_info_str(nc, "socket: fd=%d %s", fd, |
396 | SocketAddressType_str(sa_type)); | |
e34cde35 | 397 | } |
42281ac9 | 398 | |
42281ac9 | 399 | return s; |
e5d1fca0 SH |
400 | |
401 | err: | |
402 | closesocket(fd); | |
403 | return NULL; | |
42281ac9 MM |
404 | } |
405 | ||
406 | static void net_socket_connect(void *opaque) | |
407 | { | |
408 | NetSocketState *s = opaque; | |
863f678f SH |
409 | s->send_fn = net_socket_send; |
410 | net_socket_read_poll(s, true); | |
42281ac9 MM |
411 | } |
412 | ||
564f63e3 | 413 | static NetClientInfo net_socket_info = { |
f394b2e2 | 414 | .type = NET_CLIENT_DRIVER_SOCKET, |
564f63e3 MM |
415 | .size = sizeof(NetSocketState), |
416 | .receive = net_socket_receive, | |
417 | .cleanup = net_socket_cleanup, | |
418 | }; | |
419 | ||
4e68f7a0 | 420 | static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, |
42281ac9 MM |
421 | const char *model, |
422 | const char *name, | |
423 | int fd, int is_connected) | |
424 | { | |
4e68f7a0 | 425 | NetClientState *nc; |
42281ac9 | 426 | NetSocketState *s; |
564f63e3 | 427 | |
ab5f3f84 | 428 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
564f63e3 | 429 | |
53b85d95 | 430 | qemu_set_info_str(nc, "socket: fd=%d", fd); |
d89b4f83 | 431 | |
564f63e3 MM |
432 | s = DO_UPCAST(NetSocketState, nc, nc); |
433 | ||
42281ac9 | 434 | s->fd = fd; |
011de2b5 | 435 | s->listen_fd = -1; |
3cde5ea2 | 436 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
564f63e3 | 437 | |
20048d0a SH |
438 | /* Disable Nagle algorithm on TCP sockets to reduce latency */ |
439 | socket_set_nodelay(fd); | |
440 | ||
42281ac9 MM |
441 | if (is_connected) { |
442 | net_socket_connect(s); | |
443 | } else { | |
444 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
445 | } | |
446 | return s; | |
447 | } | |
448 | ||
4e68f7a0 | 449 | static NetSocketState *net_socket_fd_init(NetClientState *peer, |
42281ac9 | 450 | const char *model, const char *name, |
c37f0bb1 MZ |
451 | int fd, int is_connected, |
452 | const char *mc, Error **errp) | |
42281ac9 MM |
453 | { |
454 | int so_type = -1, optlen=sizeof(so_type); | |
455 | ||
456 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
457 | (socklen_t *)&optlen)< 0) { | |
c37f0bb1 | 458 | error_setg(errp, "can't get socket option SO_TYPE"); |
e5d1fca0 | 459 | closesocket(fd); |
842480d4 | 460 | return NULL; |
42281ac9 MM |
461 | } |
462 | switch(so_type) { | |
463 | case SOCK_DGRAM: | |
c37f0bb1 MZ |
464 | return net_socket_fd_init_dgram(peer, model, name, fd, is_connected, |
465 | mc, errp); | |
42281ac9 | 466 | case SOCK_STREAM: |
d33d93b2 | 467 | return net_socket_fd_init_stream(peer, model, name, fd, is_connected); |
42281ac9 | 468 | default: |
8c42dbe3 MA |
469 | error_setg(errp, "socket type=%d for fd=%d must be either" |
470 | " SOCK_DGRAM or SOCK_STREAM", so_type, fd); | |
e1b24b64 | 471 | closesocket(fd); |
42281ac9 MM |
472 | } |
473 | return NULL; | |
474 | } | |
475 | ||
476 | static void net_socket_accept(void *opaque) | |
477 | { | |
011de2b5 | 478 | NetSocketState *s = opaque; |
42281ac9 MM |
479 | struct sockaddr_in saddr; |
480 | socklen_t len; | |
481 | int fd; | |
482 | ||
483 | for(;;) { | |
484 | len = sizeof(saddr); | |
011de2b5 | 485 | fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); |
42281ac9 MM |
486 | if (fd < 0 && errno != EINTR) { |
487 | return; | |
488 | } else if (fd >= 0) { | |
011de2b5 | 489 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
42281ac9 MM |
490 | break; |
491 | } | |
492 | } | |
011de2b5 ZYW |
493 | |
494 | s->fd = fd; | |
495 | s->nc.link_down = false; | |
496 | net_socket_connect(s); | |
53b85d95 LV |
497 | qemu_set_info_str(&s->nc, "socket: connection from %s:%d", |
498 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 MM |
499 | } |
500 | ||
4e68f7a0 | 501 | static int net_socket_listen_init(NetClientState *peer, |
42281ac9 MM |
502 | const char *model, |
503 | const char *name, | |
0522a959 MZ |
504 | const char *host_str, |
505 | Error **errp) | |
42281ac9 | 506 | { |
011de2b5 ZYW |
507 | NetClientState *nc; |
508 | NetSocketState *s; | |
6701e551 DB |
509 | struct sockaddr_in saddr; |
510 | int fd, ret; | |
42281ac9 | 511 | |
0522a959 | 512 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
6701e551 | 513 | return -1; |
bcd4dfd6 | 514 | } |
6701e551 DB |
515 | |
516 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); | |
517 | if (fd < 0) { | |
0522a959 | 518 | error_setg_errno(errp, errno, "can't create stream socket"); |
42281ac9 MM |
519 | return -1; |
520 | } | |
ff5927ba | 521 | qemu_socket_set_nonblock(fd); |
6701e551 DB |
522 | |
523 | socket_set_fast_reuse(fd); | |
42281ac9 | 524 | |
6701e551 | 525 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
61601835 | 526 | if (ret < 0) { |
0522a959 MZ |
527 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
528 | inet_ntoa(saddr.sin_addr)); | |
6701e551 DB |
529 | closesocket(fd); |
530 | return -1; | |
531 | } | |
532 | ret = listen(fd, 0); | |
533 | if (ret < 0) { | |
0522a959 | 534 | error_setg_errno(errp, errno, "can't listen on socket"); |
6701e551 | 535 | closesocket(fd); |
42281ac9 MM |
536 | return -1; |
537 | } | |
011de2b5 ZYW |
538 | |
539 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); | |
540 | s = DO_UPCAST(NetSocketState, nc, nc); | |
541 | s->fd = -1; | |
6701e551 | 542 | s->listen_fd = fd; |
011de2b5 | 543 | s->nc.link_down = true; |
3cde5ea2 | 544 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
011de2b5 ZYW |
545 | |
546 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
42281ac9 MM |
547 | return 0; |
548 | } | |
549 | ||
4e68f7a0 | 550 | static int net_socket_connect_init(NetClientState *peer, |
42281ac9 MM |
551 | const char *model, |
552 | const char *name, | |
0522a959 MZ |
553 | const char *host_str, |
554 | Error **errp) | |
42281ac9 | 555 | { |
6701e551 DB |
556 | NetSocketState *s; |
557 | int fd, connected, ret; | |
558 | struct sockaddr_in saddr; | |
559 | ||
0522a959 | 560 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
6701e551 | 561 | return -1; |
bcd4dfd6 | 562 | } |
42281ac9 | 563 | |
6701e551 | 564 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
42281ac9 | 565 | if (fd < 0) { |
0522a959 | 566 | error_setg_errno(errp, errno, "can't create stream socket"); |
6701e551 | 567 | return -1; |
42281ac9 | 568 | } |
ff5927ba | 569 | qemu_socket_set_nonblock(fd); |
61601835 | 570 | |
6701e551 DB |
571 | connected = 0; |
572 | for(;;) { | |
573 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
574 | if (ret < 0) { | |
575 | if (errno == EINTR || errno == EWOULDBLOCK) { | |
576 | /* continue */ | |
577 | } else if (errno == EINPROGRESS || | |
daf188ff | 578 | errno == EALREADY) { |
6701e551 DB |
579 | break; |
580 | } else { | |
0522a959 | 581 | error_setg_errno(errp, errno, "can't connect socket"); |
6701e551 DB |
582 | closesocket(fd); |
583 | return -1; | |
584 | } | |
585 | } else { | |
586 | connected = 1; | |
587 | break; | |
588 | } | |
589 | } | |
0522a959 | 590 | s = net_socket_fd_init(peer, model, name, fd, connected, NULL, errp); |
c37f0bb1 | 591 | if (!s) { |
6701e551 | 592 | return -1; |
c37f0bb1 MZ |
593 | } |
594 | ||
53b85d95 LV |
595 | qemu_set_info_str(&s->nc, "socket: connect to %s:%d", |
596 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 MM |
597 | return 0; |
598 | } | |
599 | ||
4e68f7a0 | 600 | static int net_socket_mcast_init(NetClientState *peer, |
42281ac9 MM |
601 | const char *model, |
602 | const char *name, | |
3a75e74c | 603 | const char *host_str, |
0522a959 MZ |
604 | const char *localaddr_str, |
605 | Error **errp) | |
42281ac9 MM |
606 | { |
607 | NetSocketState *s; | |
608 | int fd; | |
609 | struct sockaddr_in saddr; | |
3a75e74c | 610 | struct in_addr localaddr, *param_localaddr; |
42281ac9 | 611 | |
0522a959 | 612 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
42281ac9 | 613 | return -1; |
bcd4dfd6 | 614 | } |
42281ac9 | 615 | |
3a75e74c | 616 | if (localaddr_str != NULL) { |
0522a959 MZ |
617 | if (inet_aton(localaddr_str, &localaddr) == 0) { |
618 | error_setg(errp, "localaddr '%s' is not a valid IPv4 address", | |
619 | localaddr_str); | |
3a75e74c | 620 | return -1; |
0522a959 | 621 | } |
3a75e74c MR |
622 | param_localaddr = &localaddr; |
623 | } else { | |
624 | param_localaddr = NULL; | |
625 | } | |
42281ac9 | 626 | |
0522a959 | 627 | fd = net_socket_mcast_create(&saddr, param_localaddr, errp); |
c37f0bb1 | 628 | if (fd < 0) { |
842480d4 | 629 | return -1; |
c37f0bb1 | 630 | } |
42281ac9 | 631 | |
0522a959 | 632 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
c37f0bb1 | 633 | if (!s) { |
42281ac9 | 634 | return -1; |
c37f0bb1 | 635 | } |
42281ac9 MM |
636 | |
637 | s->dgram_dst = saddr; | |
638 | ||
53b85d95 LV |
639 | qemu_set_info_str(&s->nc, "socket: mcast=%s:%d", |
640 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 | 641 | return 0; |
d89b4f83 | 642 | |
42281ac9 MM |
643 | } |
644 | ||
4e68f7a0 | 645 | static int net_socket_udp_init(NetClientState *peer, |
0e0e7fac BM |
646 | const char *model, |
647 | const char *name, | |
648 | const char *rhost, | |
0522a959 MZ |
649 | const char *lhost, |
650 | Error **errp) | |
0e0e7fac BM |
651 | { |
652 | NetSocketState *s; | |
bcbe92fb | 653 | int fd, ret; |
0e0e7fac BM |
654 | struct sockaddr_in laddr, raddr; |
655 | ||
0522a959 | 656 | if (parse_host_port(&laddr, lhost, errp) < 0) { |
0e0e7fac BM |
657 | return -1; |
658 | } | |
659 | ||
0522a959 | 660 | if (parse_host_port(&raddr, rhost, errp) < 0) { |
0e0e7fac BM |
661 | return -1; |
662 | } | |
663 | ||
664 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); | |
665 | if (fd < 0) { | |
0522a959 | 666 | error_setg_errno(errp, errno, "can't create datagram socket"); |
0e0e7fac BM |
667 | return -1; |
668 | } | |
bcbe92fb SO |
669 | |
670 | ret = socket_set_fast_reuse(fd); | |
0e0e7fac | 671 | if (ret < 0) { |
0522a959 MZ |
672 | error_setg_errno(errp, errno, |
673 | "can't set socket option SO_REUSEADDR"); | |
0e0e7fac BM |
674 | closesocket(fd); |
675 | return -1; | |
676 | } | |
677 | ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); | |
678 | if (ret < 0) { | |
0522a959 MZ |
679 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
680 | inet_ntoa(laddr.sin_addr)); | |
0e0e7fac BM |
681 | closesocket(fd); |
682 | return -1; | |
683 | } | |
ff5927ba | 684 | qemu_socket_set_nonblock(fd); |
0e0e7fac | 685 | |
0522a959 | 686 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
0e0e7fac BM |
687 | if (!s) { |
688 | return -1; | |
689 | } | |
690 | ||
691 | s->dgram_dst = raddr; | |
692 | ||
53b85d95 LV |
693 | qemu_set_info_str(&s->nc, "socket: udp=%s:%d", inet_ntoa(raddr.sin_addr), |
694 | ntohs(raddr.sin_port)); | |
0e0e7fac BM |
695 | return 0; |
696 | } | |
697 | ||
cebea510 | 698 | int net_init_socket(const Netdev *netdev, const char *name, |
a30ecde6 | 699 | NetClientState *peer, Error **errp) |
42281ac9 | 700 | { |
bef8e8fe | 701 | const NetdevSocketOptions *sock; |
42281ac9 | 702 | |
f394b2e2 EB |
703 | assert(netdev->type == NET_CLIENT_DRIVER_SOCKET); |
704 | sock = &netdev->u.socket; | |
42281ac9 | 705 | |
7480874a MA |
706 | if (!!sock->fd + !!sock->listen + !!sock->connect + !!sock->mcast + |
707 | !!sock->udp != 1) { | |
0522a959 MZ |
708 | error_setg(errp, "exactly one of listen=, connect=, mcast= or udp=" |
709 | " is required"); | |
bef8e8fe LE |
710 | return -1; |
711 | } | |
42281ac9 | 712 | |
7480874a | 713 | if (sock->localaddr && !sock->mcast && !sock->udp) { |
0522a959 | 714 | error_setg(errp, "localaddr= is only valid with mcast= or udp="); |
bef8e8fe LE |
715 | return -1; |
716 | } | |
42281ac9 | 717 | |
7480874a | 718 | if (sock->fd) { |
894022e6 | 719 | int fd, ret; |
42281ac9 | 720 | |
947e4744 | 721 | fd = monitor_fd_param(monitor_cur(), sock->fd, errp); |
fc13fa00 SH |
722 | if (fd == -1) { |
723 | return -1; | |
724 | } | |
ff5927ba | 725 | ret = qemu_socket_try_set_nonblock(fd); |
894022e6 LV |
726 | if (ret < 0) { |
727 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", | |
728 | name, fd); | |
729 | return -1; | |
730 | } | |
c37f0bb1 MZ |
731 | if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast, |
732 | errp)) { | |
42281ac9 MM |
733 | return -1; |
734 | } | |
bef8e8fe LE |
735 | return 0; |
736 | } | |
42281ac9 | 737 | |
7480874a | 738 | if (sock->listen) { |
0522a959 MZ |
739 | if (net_socket_listen_init(peer, "socket", name, sock->listen, errp) |
740 | < 0) { | |
42281ac9 MM |
741 | return -1; |
742 | } | |
bef8e8fe LE |
743 | return 0; |
744 | } | |
42281ac9 | 745 | |
7480874a | 746 | if (sock->connect) { |
0522a959 MZ |
747 | if (net_socket_connect_init(peer, "socket", name, sock->connect, errp) |
748 | < 0) { | |
42281ac9 MM |
749 | return -1; |
750 | } | |
bef8e8fe LE |
751 | return 0; |
752 | } | |
42281ac9 | 753 | |
7480874a | 754 | if (sock->mcast) { |
bef8e8fe LE |
755 | /* if sock->localaddr is missing, it has been initialized to "all bits |
756 | * zero" */ | |
d33d93b2 | 757 | if (net_socket_mcast_init(peer, "socket", name, sock->mcast, |
0522a959 | 758 | sock->localaddr, errp) < 0) { |
0e0e7fac BM |
759 | return -1; |
760 | } | |
bef8e8fe LE |
761 | return 0; |
762 | } | |
0e0e7fac | 763 | |
7480874a MA |
764 | assert(sock->udp); |
765 | if (!sock->localaddr) { | |
0522a959 | 766 | error_setg(errp, "localaddr= is mandatory with udp="); |
bef8e8fe LE |
767 | return -1; |
768 | } | |
0522a959 MZ |
769 | if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr, |
770 | errp) < 0) { | |
42281ac9 MM |
771 | return -1; |
772 | } | |
42281ac9 MM |
773 | return 0; |
774 | } |