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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 | ||
120 | do { | |
fdec16e3 | 121 | if (s->dgram_dst.sin_family != AF_UNIX) { |
e7b79428 MAL |
122 | ret = sendto(s->fd, buf, size, 0, |
123 | (struct sockaddr *)&s->dgram_dst, | |
124 | sizeof(s->dgram_dst)); | |
fdec16e3 MAL |
125 | } else { |
126 | ret = send(s->fd, buf, size, 0); | |
127 | } | |
213fd508 SH |
128 | } while (ret == -1 && errno == EINTR); |
129 | ||
130 | if (ret == -1 && errno == EAGAIN) { | |
131 | net_socket_write_poll(s, true); | |
132 | return 0; | |
133 | } | |
134 | return ret; | |
42281ac9 MM |
135 | } |
136 | ||
6e99c631 FZ |
137 | static void net_socket_send_completed(NetClientState *nc, ssize_t len) |
138 | { | |
139 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); | |
140 | ||
141 | if (!s->read_poll) { | |
142 | net_socket_read_poll(s, true); | |
143 | } | |
144 | } | |
145 | ||
16a3df40 ZC |
146 | static void net_socket_rs_finalize(SocketReadState *rs) |
147 | { | |
148 | NetSocketState *s = container_of(rs, NetSocketState, rs); | |
149 | ||
150 | if (qemu_send_packet_async(&s->nc, rs->buf, | |
151 | rs->packet_len, | |
152 | net_socket_send_completed) == 0) { | |
153 | net_socket_read_poll(s, false); | |
154 | } | |
155 | } | |
156 | ||
42281ac9 MM |
157 | static void net_socket_send(void *opaque) |
158 | { | |
159 | NetSocketState *s = opaque; | |
b16a44e1 | 160 | int size; |
16a3df40 | 161 | int ret; |
d32fcad3 | 162 | uint8_t buf1[NET_BUFSIZE]; |
42281ac9 MM |
163 | const uint8_t *buf; |
164 | ||
e7b79428 | 165 | size = recv(s->fd, buf1, sizeof(buf1), 0); |
42281ac9 | 166 | if (size < 0) { |
b16a44e1 | 167 | if (errno != EWOULDBLOCK) |
42281ac9 MM |
168 | goto eoc; |
169 | } else if (size == 0) { | |
170 | /* end of connection */ | |
171 | eoc: | |
863f678f SH |
172 | net_socket_read_poll(s, false); |
173 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
174 | if (s->listen_fd != -1) { |
175 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
176 | } | |
42281ac9 | 177 | closesocket(s->fd); |
011de2b5 ZYW |
178 | |
179 | s->fd = -1; | |
3cde5ea2 | 180 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
011de2b5 | 181 | s->nc.link_down = true; |
ac149498 | 182 | qemu_set_info_str(&s->nc, "%s", ""); |
011de2b5 | 183 | |
42281ac9 MM |
184 | return; |
185 | } | |
186 | buf = buf1; | |
42281ac9 | 187 | |
16a3df40 ZC |
188 | ret = net_fill_rstate(&s->rs, buf, size); |
189 | ||
190 | if (ret == -1) { | |
191 | goto eoc; | |
42281ac9 MM |
192 | } |
193 | } | |
194 | ||
195 | static void net_socket_send_dgram(void *opaque) | |
196 | { | |
197 | NetSocketState *s = opaque; | |
198 | int size; | |
199 | ||
e7b79428 | 200 | size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); |
42281ac9 MM |
201 | if (size < 0) |
202 | return; | |
203 | if (size == 0) { | |
204 | /* end of connection */ | |
863f678f SH |
205 | net_socket_read_poll(s, false); |
206 | net_socket_write_poll(s, false); | |
42281ac9 MM |
207 | return; |
208 | } | |
16a3df40 | 209 | if (qemu_send_packet_async(&s->nc, s->rs.buf, size, |
6e99c631 FZ |
210 | net_socket_send_completed) == 0) { |
211 | net_socket_read_poll(s, false); | |
212 | } | |
42281ac9 MM |
213 | } |
214 | ||
c37f0bb1 MZ |
215 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, |
216 | struct in_addr *localaddr, | |
217 | Error **errp) | |
42281ac9 MM |
218 | { |
219 | struct ip_mreq imr; | |
220 | int fd; | |
221 | int val, ret; | |
23ddf2bb BS |
222 | #ifdef __OpenBSD__ |
223 | unsigned char loop; | |
224 | #else | |
225 | int loop; | |
226 | #endif | |
227 | ||
42281ac9 | 228 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
c37f0bb1 MZ |
229 | error_setg(errp, "specified mcastaddr %s (0x%08x) " |
230 | "does not contain a multicast address", | |
231 | inet_ntoa(mcastaddr->sin_addr), | |
232 | (int)ntohl(mcastaddr->sin_addr.s_addr)); | |
842480d4 | 233 | return -1; |
42281ac9 | 234 | } |
c37f0bb1 | 235 | |
40ff6d7e | 236 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
42281ac9 | 237 | if (fd < 0) { |
c37f0bb1 | 238 | error_setg_errno(errp, errno, "can't create datagram socket"); |
42281ac9 MM |
239 | return -1; |
240 | } | |
241 | ||
bcbe92fb SO |
242 | /* Allow multiple sockets to bind the same multicast ip and port by setting |
243 | * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set | |
244 | * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR | |
245 | * only on posix systems. | |
246 | */ | |
42281ac9 | 247 | val = 1; |
e7b79428 | 248 | ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
42281ac9 | 249 | if (ret < 0) { |
c37f0bb1 MZ |
250 | error_setg_errno(errp, errno, |
251 | "can't set socket option SO_REUSEADDR"); | |
842480d4 | 252 | goto fail; |
42281ac9 MM |
253 | } |
254 | ||
255 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); | |
256 | if (ret < 0) { | |
c37f0bb1 MZ |
257 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
258 | inet_ntoa(mcastaddr->sin_addr)); | |
42281ac9 MM |
259 | goto fail; |
260 | } | |
261 | ||
262 | /* Add host to multicast group */ | |
263 | imr.imr_multiaddr = mcastaddr->sin_addr; | |
3a75e74c MR |
264 | if (localaddr) { |
265 | imr.imr_interface = *localaddr; | |
266 | } else { | |
267 | imr.imr_interface.s_addr = htonl(INADDR_ANY); | |
268 | } | |
42281ac9 | 269 | |
e7b79428 MAL |
270 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
271 | &imr, sizeof(struct ip_mreq)); | |
42281ac9 | 272 | if (ret < 0) { |
c37f0bb1 MZ |
273 | error_setg_errno(errp, errno, |
274 | "can't add socket to multicast group %s", | |
275 | inet_ntoa(imr.imr_multiaddr)); | |
842480d4 | 276 | goto fail; |
42281ac9 MM |
277 | } |
278 | ||
279 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ | |
23ddf2bb | 280 | loop = 1; |
e7b79428 MAL |
281 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
282 | &loop, sizeof(loop)); | |
42281ac9 | 283 | if (ret < 0) { |
c37f0bb1 MZ |
284 | error_setg_errno(errp, errno, |
285 | "can't force multicast message to loopback"); | |
842480d4 | 286 | goto fail; |
42281ac9 MM |
287 | } |
288 | ||
3a75e74c MR |
289 | /* If a bind address is given, only send packets from that address */ |
290 | if (localaddr != NULL) { | |
e7b79428 MAL |
291 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
292 | localaddr, sizeof(*localaddr)); | |
3a75e74c | 293 | if (ret < 0) { |
c37f0bb1 MZ |
294 | error_setg_errno(errp, errno, |
295 | "can't set the default network send interface"); | |
3a75e74c MR |
296 | goto fail; |
297 | } | |
298 | } | |
299 | ||
ff5927ba | 300 | qemu_socket_set_nonblock(fd); |
42281ac9 MM |
301 | return fd; |
302 | fail: | |
303 | if (fd >= 0) | |
304 | closesocket(fd); | |
305 | return -1; | |
306 | } | |
307 | ||
4e68f7a0 | 308 | static void net_socket_cleanup(NetClientState *nc) |
42281ac9 | 309 | { |
564f63e3 | 310 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
011de2b5 | 311 | if (s->fd != -1) { |
863f678f SH |
312 | net_socket_read_poll(s, false); |
313 | net_socket_write_poll(s, false); | |
011de2b5 ZYW |
314 | close(s->fd); |
315 | s->fd = -1; | |
316 | } | |
317 | if (s->listen_fd != -1) { | |
318 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); | |
319 | closesocket(s->listen_fd); | |
320 | s->listen_fd = -1; | |
321 | } | |
42281ac9 MM |
322 | } |
323 | ||
564f63e3 | 324 | static NetClientInfo net_dgram_socket_info = { |
f394b2e2 | 325 | .type = NET_CLIENT_DRIVER_SOCKET, |
564f63e3 MM |
326 | .size = sizeof(NetSocketState), |
327 | .receive = net_socket_receive_dgram, | |
328 | .cleanup = net_socket_cleanup, | |
329 | }; | |
330 | ||
4e68f7a0 | 331 | static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, |
42281ac9 MM |
332 | const char *model, |
333 | const char *name, | |
0f8c289a | 334 | int fd, int is_connected, |
c37f0bb1 MZ |
335 | const char *mcast, |
336 | Error **errp) | |
42281ac9 MM |
337 | { |
338 | struct sockaddr_in saddr; | |
339 | int newfd; | |
4e68f7a0 | 340 | NetClientState *nc; |
42281ac9 | 341 | NetSocketState *s; |
fdec16e3 MAL |
342 | SocketAddress *sa; |
343 | SocketAddressType sa_type; | |
344 | ||
345 | sa = socket_local_address(fd, errp); | |
346 | if (!sa) { | |
347 | return NULL; | |
348 | } | |
349 | sa_type = sa->type; | |
350 | qapi_free_SocketAddress(sa); | |
42281ac9 MM |
351 | |
352 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it | |
353 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() | |
354 | * by ONLY ONE process: we must "clone" this dgram socket --jjo | |
355 | */ | |
356 | ||
0f8c289a | 357 | if (is_connected && mcast != NULL) { |
bcd4dfd6 | 358 | if (parse_host_port(&saddr, mcast, errp) < 0) { |
0f8c289a JF |
359 | goto err; |
360 | } | |
842480d4 SH |
361 | /* must be bound */ |
362 | if (saddr.sin_addr.s_addr == 0) { | |
c37f0bb1 | 363 | error_setg(errp, "can't setup multicast destination address"); |
e5d1fca0 | 364 | goto err; |
842480d4 SH |
365 | } |
366 | /* clone dgram socket */ | |
c37f0bb1 | 367 | newfd = net_socket_mcast_create(&saddr, NULL, errp); |
842480d4 | 368 | if (newfd < 0) { |
e5d1fca0 | 369 | goto err; |
842480d4 SH |
370 | } |
371 | /* clone newfd to fd, close newfd */ | |
372 | dup2(newfd, fd); | |
373 | close(newfd); | |
374 | ||
42281ac9 MM |
375 | } |
376 | ||
ab5f3f84 | 377 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); |
564f63e3 | 378 | |
564f63e3 MM |
379 | s = DO_UPCAST(NetSocketState, nc, nc); |
380 | ||
42281ac9 | 381 | s->fd = fd; |
011de2b5 | 382 | s->listen_fd = -1; |
863f678f | 383 | s->send_fn = net_socket_send_dgram; |
3cde5ea2 | 384 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
863f678f | 385 | net_socket_read_poll(s, true); |
42281ac9 MM |
386 | |
387 | /* mcast: save bound address as dst */ | |
bb160b57 | 388 | if (is_connected && mcast != NULL) { |
e34cde35 | 389 | s->dgram_dst = saddr; |
53b85d95 LV |
390 | qemu_set_info_str(nc, "socket: fd=%d (cloned mcast=%s:%d)", fd, |
391 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
8db804ac | 392 | } else { |
fdec16e3 MAL |
393 | if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { |
394 | s->dgram_dst.sin_family = AF_UNIX; | |
395 | } | |
d89b4f83 | 396 | |
53b85d95 LV |
397 | qemu_set_info_str(nc, "socket: fd=%d %s", fd, |
398 | SocketAddressType_str(sa_type)); | |
e34cde35 | 399 | } |
42281ac9 | 400 | |
42281ac9 | 401 | return s; |
e5d1fca0 SH |
402 | |
403 | err: | |
404 | closesocket(fd); | |
405 | return NULL; | |
42281ac9 MM |
406 | } |
407 | ||
408 | static void net_socket_connect(void *opaque) | |
409 | { | |
410 | NetSocketState *s = opaque; | |
863f678f SH |
411 | s->send_fn = net_socket_send; |
412 | net_socket_read_poll(s, true); | |
42281ac9 MM |
413 | } |
414 | ||
564f63e3 | 415 | static NetClientInfo net_socket_info = { |
f394b2e2 | 416 | .type = NET_CLIENT_DRIVER_SOCKET, |
564f63e3 MM |
417 | .size = sizeof(NetSocketState), |
418 | .receive = net_socket_receive, | |
419 | .cleanup = net_socket_cleanup, | |
420 | }; | |
421 | ||
4e68f7a0 | 422 | static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, |
42281ac9 MM |
423 | const char *model, |
424 | const char *name, | |
425 | int fd, int is_connected) | |
426 | { | |
4e68f7a0 | 427 | NetClientState *nc; |
42281ac9 | 428 | NetSocketState *s; |
564f63e3 | 429 | |
ab5f3f84 | 430 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
564f63e3 | 431 | |
53b85d95 | 432 | qemu_set_info_str(nc, "socket: fd=%d", fd); |
d89b4f83 | 433 | |
564f63e3 MM |
434 | s = DO_UPCAST(NetSocketState, nc, nc); |
435 | ||
42281ac9 | 436 | s->fd = fd; |
011de2b5 | 437 | s->listen_fd = -1; |
3cde5ea2 | 438 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
564f63e3 | 439 | |
20048d0a SH |
440 | /* Disable Nagle algorithm on TCP sockets to reduce latency */ |
441 | socket_set_nodelay(fd); | |
442 | ||
42281ac9 MM |
443 | if (is_connected) { |
444 | net_socket_connect(s); | |
445 | } else { | |
446 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); | |
447 | } | |
448 | return s; | |
449 | } | |
450 | ||
4e68f7a0 | 451 | static NetSocketState *net_socket_fd_init(NetClientState *peer, |
42281ac9 | 452 | const char *model, const char *name, |
c37f0bb1 MZ |
453 | int fd, int is_connected, |
454 | const char *mc, Error **errp) | |
42281ac9 MM |
455 | { |
456 | int so_type = -1, optlen=sizeof(so_type); | |
457 | ||
458 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, | |
459 | (socklen_t *)&optlen)< 0) { | |
c37f0bb1 | 460 | error_setg(errp, "can't get socket option SO_TYPE"); |
e5d1fca0 | 461 | closesocket(fd); |
842480d4 | 462 | return NULL; |
42281ac9 MM |
463 | } |
464 | switch(so_type) { | |
465 | case SOCK_DGRAM: | |
c37f0bb1 MZ |
466 | return net_socket_fd_init_dgram(peer, model, name, fd, is_connected, |
467 | mc, errp); | |
42281ac9 | 468 | case SOCK_STREAM: |
d33d93b2 | 469 | return net_socket_fd_init_stream(peer, model, name, fd, is_connected); |
42281ac9 | 470 | default: |
8c42dbe3 MA |
471 | error_setg(errp, "socket type=%d for fd=%d must be either" |
472 | " SOCK_DGRAM or SOCK_STREAM", so_type, fd); | |
e1b24b64 | 473 | closesocket(fd); |
42281ac9 MM |
474 | } |
475 | return NULL; | |
476 | } | |
477 | ||
478 | static void net_socket_accept(void *opaque) | |
479 | { | |
011de2b5 | 480 | NetSocketState *s = opaque; |
42281ac9 MM |
481 | struct sockaddr_in saddr; |
482 | socklen_t len; | |
483 | int fd; | |
484 | ||
485 | for(;;) { | |
486 | len = sizeof(saddr); | |
011de2b5 | 487 | fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); |
42281ac9 MM |
488 | if (fd < 0 && errno != EINTR) { |
489 | return; | |
490 | } else if (fd >= 0) { | |
011de2b5 | 491 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
42281ac9 MM |
492 | break; |
493 | } | |
494 | } | |
011de2b5 ZYW |
495 | |
496 | s->fd = fd; | |
497 | s->nc.link_down = false; | |
498 | net_socket_connect(s); | |
53b85d95 LV |
499 | qemu_set_info_str(&s->nc, "socket: connection from %s:%d", |
500 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 MM |
501 | } |
502 | ||
4e68f7a0 | 503 | static int net_socket_listen_init(NetClientState *peer, |
42281ac9 MM |
504 | const char *model, |
505 | const char *name, | |
0522a959 MZ |
506 | const char *host_str, |
507 | Error **errp) | |
42281ac9 | 508 | { |
011de2b5 ZYW |
509 | NetClientState *nc; |
510 | NetSocketState *s; | |
6701e551 DB |
511 | struct sockaddr_in saddr; |
512 | int fd, ret; | |
42281ac9 | 513 | |
0522a959 | 514 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
6701e551 | 515 | return -1; |
bcd4dfd6 | 516 | } |
6701e551 DB |
517 | |
518 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); | |
519 | if (fd < 0) { | |
0522a959 | 520 | error_setg_errno(errp, errno, "can't create stream socket"); |
42281ac9 MM |
521 | return -1; |
522 | } | |
ff5927ba | 523 | qemu_socket_set_nonblock(fd); |
6701e551 DB |
524 | |
525 | socket_set_fast_reuse(fd); | |
42281ac9 | 526 | |
6701e551 | 527 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
61601835 | 528 | if (ret < 0) { |
0522a959 MZ |
529 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
530 | inet_ntoa(saddr.sin_addr)); | |
6701e551 DB |
531 | closesocket(fd); |
532 | return -1; | |
533 | } | |
534 | ret = listen(fd, 0); | |
535 | if (ret < 0) { | |
0522a959 | 536 | error_setg_errno(errp, errno, "can't listen on socket"); |
6701e551 | 537 | closesocket(fd); |
42281ac9 MM |
538 | return -1; |
539 | } | |
011de2b5 ZYW |
540 | |
541 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); | |
542 | s = DO_UPCAST(NetSocketState, nc, nc); | |
543 | s->fd = -1; | |
6701e551 | 544 | s->listen_fd = fd; |
011de2b5 | 545 | s->nc.link_down = true; |
3cde5ea2 | 546 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
011de2b5 ZYW |
547 | |
548 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); | |
42281ac9 MM |
549 | return 0; |
550 | } | |
551 | ||
4e68f7a0 | 552 | static int net_socket_connect_init(NetClientState *peer, |
42281ac9 MM |
553 | const char *model, |
554 | const char *name, | |
0522a959 MZ |
555 | const char *host_str, |
556 | Error **errp) | |
42281ac9 | 557 | { |
6701e551 DB |
558 | NetSocketState *s; |
559 | int fd, connected, ret; | |
560 | struct sockaddr_in saddr; | |
561 | ||
0522a959 | 562 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
6701e551 | 563 | return -1; |
bcd4dfd6 | 564 | } |
42281ac9 | 565 | |
6701e551 | 566 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
42281ac9 | 567 | if (fd < 0) { |
0522a959 | 568 | error_setg_errno(errp, errno, "can't create stream socket"); |
6701e551 | 569 | return -1; |
42281ac9 | 570 | } |
ff5927ba | 571 | qemu_socket_set_nonblock(fd); |
61601835 | 572 | |
6701e551 DB |
573 | connected = 0; |
574 | for(;;) { | |
575 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); | |
576 | if (ret < 0) { | |
577 | if (errno == EINTR || errno == EWOULDBLOCK) { | |
578 | /* continue */ | |
579 | } else if (errno == EINPROGRESS || | |
daf188ff | 580 | errno == EALREADY) { |
6701e551 DB |
581 | break; |
582 | } else { | |
0522a959 | 583 | error_setg_errno(errp, errno, "can't connect socket"); |
6701e551 DB |
584 | closesocket(fd); |
585 | return -1; | |
586 | } | |
587 | } else { | |
588 | connected = 1; | |
589 | break; | |
590 | } | |
591 | } | |
0522a959 | 592 | s = net_socket_fd_init(peer, model, name, fd, connected, NULL, errp); |
c37f0bb1 | 593 | if (!s) { |
6701e551 | 594 | return -1; |
c37f0bb1 MZ |
595 | } |
596 | ||
53b85d95 LV |
597 | qemu_set_info_str(&s->nc, "socket: connect to %s:%d", |
598 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 MM |
599 | return 0; |
600 | } | |
601 | ||
4e68f7a0 | 602 | static int net_socket_mcast_init(NetClientState *peer, |
42281ac9 MM |
603 | const char *model, |
604 | const char *name, | |
3a75e74c | 605 | const char *host_str, |
0522a959 MZ |
606 | const char *localaddr_str, |
607 | Error **errp) | |
42281ac9 MM |
608 | { |
609 | NetSocketState *s; | |
610 | int fd; | |
611 | struct sockaddr_in saddr; | |
3a75e74c | 612 | struct in_addr localaddr, *param_localaddr; |
42281ac9 | 613 | |
0522a959 | 614 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
42281ac9 | 615 | return -1; |
bcd4dfd6 | 616 | } |
42281ac9 | 617 | |
3a75e74c | 618 | if (localaddr_str != NULL) { |
0522a959 MZ |
619 | if (inet_aton(localaddr_str, &localaddr) == 0) { |
620 | error_setg(errp, "localaddr '%s' is not a valid IPv4 address", | |
621 | localaddr_str); | |
3a75e74c | 622 | return -1; |
0522a959 | 623 | } |
3a75e74c MR |
624 | param_localaddr = &localaddr; |
625 | } else { | |
626 | param_localaddr = NULL; | |
627 | } | |
42281ac9 | 628 | |
0522a959 | 629 | fd = net_socket_mcast_create(&saddr, param_localaddr, errp); |
c37f0bb1 | 630 | if (fd < 0) { |
842480d4 | 631 | return -1; |
c37f0bb1 | 632 | } |
42281ac9 | 633 | |
0522a959 | 634 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
c37f0bb1 | 635 | if (!s) { |
42281ac9 | 636 | return -1; |
c37f0bb1 | 637 | } |
42281ac9 MM |
638 | |
639 | s->dgram_dst = saddr; | |
640 | ||
53b85d95 LV |
641 | qemu_set_info_str(&s->nc, "socket: mcast=%s:%d", |
642 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); | |
42281ac9 | 643 | return 0; |
d89b4f83 | 644 | |
42281ac9 MM |
645 | } |
646 | ||
4e68f7a0 | 647 | static int net_socket_udp_init(NetClientState *peer, |
0e0e7fac BM |
648 | const char *model, |
649 | const char *name, | |
650 | const char *rhost, | |
0522a959 MZ |
651 | const char *lhost, |
652 | Error **errp) | |
0e0e7fac BM |
653 | { |
654 | NetSocketState *s; | |
bcbe92fb | 655 | int fd, ret; |
0e0e7fac BM |
656 | struct sockaddr_in laddr, raddr; |
657 | ||
0522a959 | 658 | if (parse_host_port(&laddr, lhost, errp) < 0) { |
0e0e7fac BM |
659 | return -1; |
660 | } | |
661 | ||
0522a959 | 662 | if (parse_host_port(&raddr, rhost, errp) < 0) { |
0e0e7fac BM |
663 | return -1; |
664 | } | |
665 | ||
666 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); | |
667 | if (fd < 0) { | |
0522a959 | 668 | error_setg_errno(errp, errno, "can't create datagram socket"); |
0e0e7fac BM |
669 | return -1; |
670 | } | |
bcbe92fb SO |
671 | |
672 | ret = socket_set_fast_reuse(fd); | |
0e0e7fac | 673 | if (ret < 0) { |
0522a959 MZ |
674 | error_setg_errno(errp, errno, |
675 | "can't set socket option SO_REUSEADDR"); | |
0e0e7fac BM |
676 | closesocket(fd); |
677 | return -1; | |
678 | } | |
679 | ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); | |
680 | if (ret < 0) { | |
0522a959 MZ |
681 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
682 | inet_ntoa(laddr.sin_addr)); | |
0e0e7fac BM |
683 | closesocket(fd); |
684 | return -1; | |
685 | } | |
ff5927ba | 686 | qemu_socket_set_nonblock(fd); |
0e0e7fac | 687 | |
0522a959 | 688 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
0e0e7fac BM |
689 | if (!s) { |
690 | return -1; | |
691 | } | |
692 | ||
693 | s->dgram_dst = raddr; | |
694 | ||
53b85d95 LV |
695 | qemu_set_info_str(&s->nc, "socket: udp=%s:%d", inet_ntoa(raddr.sin_addr), |
696 | ntohs(raddr.sin_port)); | |
0e0e7fac BM |
697 | return 0; |
698 | } | |
699 | ||
cebea510 | 700 | int net_init_socket(const Netdev *netdev, const char *name, |
a30ecde6 | 701 | NetClientState *peer, Error **errp) |
42281ac9 | 702 | { |
bef8e8fe | 703 | const NetdevSocketOptions *sock; |
42281ac9 | 704 | |
f394b2e2 EB |
705 | assert(netdev->type == NET_CLIENT_DRIVER_SOCKET); |
706 | sock = &netdev->u.socket; | |
42281ac9 | 707 | |
7480874a MA |
708 | if (!!sock->fd + !!sock->listen + !!sock->connect + !!sock->mcast + |
709 | !!sock->udp != 1) { | |
0522a959 MZ |
710 | error_setg(errp, "exactly one of listen=, connect=, mcast= or udp=" |
711 | " is required"); | |
bef8e8fe LE |
712 | return -1; |
713 | } | |
42281ac9 | 714 | |
7480874a | 715 | if (sock->localaddr && !sock->mcast && !sock->udp) { |
0522a959 | 716 | error_setg(errp, "localaddr= is only valid with mcast= or udp="); |
bef8e8fe LE |
717 | return -1; |
718 | } | |
42281ac9 | 719 | |
7480874a | 720 | if (sock->fd) { |
894022e6 | 721 | int fd, ret; |
42281ac9 | 722 | |
947e4744 | 723 | fd = monitor_fd_param(monitor_cur(), sock->fd, errp); |
fc13fa00 SH |
724 | if (fd == -1) { |
725 | return -1; | |
726 | } | |
ff5927ba | 727 | ret = qemu_socket_try_set_nonblock(fd); |
894022e6 LV |
728 | if (ret < 0) { |
729 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", | |
730 | name, fd); | |
731 | return -1; | |
732 | } | |
c37f0bb1 MZ |
733 | if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast, |
734 | errp)) { | |
42281ac9 MM |
735 | return -1; |
736 | } | |
bef8e8fe LE |
737 | return 0; |
738 | } | |
42281ac9 | 739 | |
7480874a | 740 | if (sock->listen) { |
0522a959 MZ |
741 | if (net_socket_listen_init(peer, "socket", name, sock->listen, errp) |
742 | < 0) { | |
42281ac9 MM |
743 | return -1; |
744 | } | |
bef8e8fe LE |
745 | return 0; |
746 | } | |
42281ac9 | 747 | |
7480874a | 748 | if (sock->connect) { |
0522a959 MZ |
749 | if (net_socket_connect_init(peer, "socket", name, sock->connect, errp) |
750 | < 0) { | |
42281ac9 MM |
751 | return -1; |
752 | } | |
bef8e8fe LE |
753 | return 0; |
754 | } | |
42281ac9 | 755 | |
7480874a | 756 | if (sock->mcast) { |
bef8e8fe LE |
757 | /* if sock->localaddr is missing, it has been initialized to "all bits |
758 | * zero" */ | |
d33d93b2 | 759 | if (net_socket_mcast_init(peer, "socket", name, sock->mcast, |
0522a959 | 760 | sock->localaddr, errp) < 0) { |
0e0e7fac BM |
761 | return -1; |
762 | } | |
bef8e8fe LE |
763 | return 0; |
764 | } | |
0e0e7fac | 765 | |
7480874a MA |
766 | assert(sock->udp); |
767 | if (!sock->localaddr) { | |
0522a959 | 768 | error_setg(errp, "localaddr= is mandatory with udp="); |
bef8e8fe LE |
769 | return -1; |
770 | } | |
0522a959 MZ |
771 | if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr, |
772 | errp) < 0) { | |
42281ac9 MM |
773 | return -1; |
774 | } | |
42281ac9 MM |
775 | return 0; |
776 | } |