blob: 15b410e8d82541ae86b980e4f0d68ddd06334541 [file] [log] [blame]
Mark McLoughlin42281ac2009-11-25 18:48:56 +00001/*
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 */
Peter Maydell2744d922016-01-29 17:50:00 +000024#include "qemu/osdep.h"
Mark McLoughlin42281ac2009-11-25 18:48:56 +000025
Paolo Bonzini1422e322012-10-24 08:43:34 +020026#include "net/net.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020027#include "clients.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010028#include "monitor/monitor.h"
Markus Armbrusterda34e652016-03-14 09:01:28 +010029#include "qapi/error.h"
Mark McLoughlin42281ac2009-11-25 18:48:56 +000030#include "qemu-common.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010031#include "qemu/error-report.h"
32#include "qemu/option.h"
33#include "qemu/sockets.h"
34#include "qemu/iov.h"
Alex Bligh6a1751b2013-08-21 16:02:47 +010035#include "qemu/main-loop.h"
Mark McLoughlin42281ac2009-11-25 18:48:56 +000036
37typedef struct NetSocketState {
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010038 NetClientState nc;
Zhi Yong Wu011de2b2012-07-20 14:25:53 +010039 int listen_fd;
Mark McLoughlin42281ac2009-11-25 18:48:56 +000040 int fd;
Zhang Chen16a3df42016-05-13 15:35:19 +080041 SocketReadState rs;
Stefan Hajnoczi45a7f542012-08-20 10:14:35 +010042 unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */
Mark McLoughlin42281ac2009-11-25 18:48:56 +000043 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
Stefan Hajnoczi863f6782012-08-20 10:21:54 +010044 IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */
45 bool read_poll; /* waiting to receive data? */
46 bool write_poll; /* waiting to transmit data? */
Mark McLoughlin42281ac2009-11-25 18:48:56 +000047} NetSocketState;
48
Zhi Yong Wu011de2b2012-07-20 14:25:53 +010049static void net_socket_accept(void *opaque);
Stefan Hajnoczi863f6782012-08-20 10:21:54 +010050static void net_socket_writable(void *opaque);
51
Stefan Hajnoczi863f6782012-08-20 10:21:54 +010052static void net_socket_update_fd_handler(NetSocketState *s)
53{
Fam Zheng82e1cc42015-06-04 14:45:18 +080054 qemu_set_fd_handler(s->fd,
55 s->read_poll ? s->send_fn : NULL,
56 s->write_poll ? net_socket_writable : NULL,
57 s);
Stefan Hajnoczi863f6782012-08-20 10:21:54 +010058}
59
60static void net_socket_read_poll(NetSocketState *s, bool enable)
61{
62 s->read_poll = enable;
63 net_socket_update_fd_handler(s);
64}
65
66static void net_socket_write_poll(NetSocketState *s, bool enable)
67{
68 s->write_poll = enable;
69 net_socket_update_fd_handler(s);
70}
71
72static void net_socket_writable(void *opaque)
73{
74 NetSocketState *s = opaque;
75
76 net_socket_write_poll(s, false);
77
78 qemu_flush_queued_packets(&s->nc);
79}
Mark McLoughlin42281ac2009-11-25 18:48:56 +000080
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010081static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size)
Mark McLoughlin42281ac2009-11-25 18:48:56 +000082{
Mark McLoughlin564f63e2009-11-25 18:49:08 +000083 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
Stefan Hajnoczi45a7f542012-08-20 10:14:35 +010084 uint32_t len = htonl(size);
85 struct iovec iov[] = {
86 {
87 .iov_base = &len,
88 .iov_len = sizeof(len),
89 }, {
90 .iov_base = (void *)buf,
91 .iov_len = size,
92 },
93 };
94 size_t remaining;
95 ssize_t ret;
Mark McLoughlin42281ac2009-11-25 18:48:56 +000096
Stefan Hajnoczi45a7f542012-08-20 10:14:35 +010097 remaining = iov_size(iov, 2) - s->send_index;
98 ret = iov_send(s->fd, iov, 2, s->send_index, remaining);
99
100 if (ret == -1 && errno == EAGAIN) {
101 ret = 0; /* handled further down */
102 }
103 if (ret == -1) {
104 s->send_index = 0;
105 return -errno;
106 }
107 if (ret < (ssize_t)remaining) {
108 s->send_index += ret;
109 net_socket_write_poll(s, true);
110 return 0;
111 }
112 s->send_index = 0;
113 return size;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000114}
115
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100116static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000117{
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000118 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
Stefan Hajnoczi213fd502012-08-20 10:28:53 +0100119 ssize_t ret;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000120
Stefan Hajnoczi213fd502012-08-20 10:28:53 +0100121 do {
Marc-André Lureaufdec16e2019-03-11 18:25:05 +0100122 if (s->dgram_dst.sin_family != AF_UNIX) {
123 ret = qemu_sendto(s->fd, buf, size, 0,
124 (struct sockaddr *)&s->dgram_dst,
125 sizeof(s->dgram_dst));
126 } else {
127 ret = send(s->fd, buf, size, 0);
128 }
Stefan Hajnoczi213fd502012-08-20 10:28:53 +0100129 } while (ret == -1 && errno == EINTR);
130
131 if (ret == -1 && errno == EAGAIN) {
132 net_socket_write_poll(s, true);
133 return 0;
134 }
135 return ret;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000136}
137
Fam Zheng6e99c632015-06-04 14:45:16 +0800138static void net_socket_send_completed(NetClientState *nc, ssize_t len)
139{
140 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
141
142 if (!s->read_poll) {
143 net_socket_read_poll(s, true);
144 }
145}
146
Zhang Chen16a3df42016-05-13 15:35:19 +0800147static void net_socket_rs_finalize(SocketReadState *rs)
148{
149 NetSocketState *s = container_of(rs, NetSocketState, rs);
150
151 if (qemu_send_packet_async(&s->nc, rs->buf,
152 rs->packet_len,
153 net_socket_send_completed) == 0) {
154 net_socket_read_poll(s, false);
155 }
156}
157
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000158static void net_socket_send(void *opaque)
159{
160 NetSocketState *s = opaque;
Daniel P. Berrangeb16a44e2016-03-07 20:36:03 +0000161 int size;
Zhang Chen16a3df42016-05-13 15:35:19 +0800162 int ret;
Scott Feldmand32fcad2013-03-18 11:43:44 -0700163 uint8_t buf1[NET_BUFSIZE];
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000164 const uint8_t *buf;
165
Blue Swirl00aa0042011-07-23 20:04:29 +0000166 size = qemu_recv(s->fd, buf1, sizeof(buf1), 0);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000167 if (size < 0) {
Daniel P. Berrangeb16a44e2016-03-07 20:36:03 +0000168 if (errno != EWOULDBLOCK)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000169 goto eoc;
170 } else if (size == 0) {
171 /* end of connection */
172 eoc:
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100173 net_socket_read_poll(s, false);
174 net_socket_write_poll(s, false);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100175 if (s->listen_fd != -1) {
176 qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s);
177 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000178 closesocket(s->fd);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100179
180 s->fd = -1;
Zhang Chen3cde5ea2017-07-04 14:53:46 +0800181 net_socket_rs_init(&s->rs, net_socket_rs_finalize, false);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100182 s->nc.link_down = true;
Jason Wang56e6f592021-04-02 11:03:33 +0800183 memset(s->nc.info_str, 0, sizeof(s->nc.info_str));
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100184
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000185 return;
186 }
187 buf = buf1;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000188
Zhang Chen16a3df42016-05-13 15:35:19 +0800189 ret = net_fill_rstate(&s->rs, buf, size);
190
191 if (ret == -1) {
192 goto eoc;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000193 }
194}
195
196static void net_socket_send_dgram(void *opaque)
197{
198 NetSocketState *s = opaque;
199 int size;
200
Zhang Chen16a3df42016-05-13 15:35:19 +0800201 size = qemu_recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000202 if (size < 0)
203 return;
204 if (size == 0) {
205 /* end of connection */
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100206 net_socket_read_poll(s, false);
207 net_socket_write_poll(s, false);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000208 return;
209 }
Zhang Chen16a3df42016-05-13 15:35:19 +0800210 if (qemu_send_packet_async(&s->nc, s->rs.buf, size,
Fam Zheng6e99c632015-06-04 14:45:16 +0800211 net_socket_send_completed) == 0) {
212 net_socket_read_poll(s, false);
213 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000214}
215
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800216static int net_socket_mcast_create(struct sockaddr_in *mcastaddr,
217 struct in_addr *localaddr,
218 Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000219{
220 struct ip_mreq imr;
221 int fd;
222 int val, ret;
Brad23ddf2b2011-08-07 11:06:43 +0000223#ifdef __OpenBSD__
224 unsigned char loop;
225#else
226 int loop;
227#endif
228
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000229 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800230 error_setg(errp, "specified mcastaddr %s (0x%08x) "
231 "does not contain a multicast address",
232 inet_ntoa(mcastaddr->sin_addr),
233 (int)ntohl(mcastaddr->sin_addr.s_addr));
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000234 return -1;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000235 }
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800236
Kevin Wolf40ff6d72009-12-02 12:24:42 +0100237 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000238 if (fd < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800239 error_setg_errno(errp, errno, "can't create datagram socket");
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000240 return -1;
241 }
242
Sebastian Ottlikbcbe92f2013-10-02 12:23:14 +0200243 /* Allow multiple sockets to bind the same multicast ip and port by setting
244 * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set
245 * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR
246 * only on posix systems.
247 */
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000248 val = 1;
Stefan Weil9957fc72013-03-08 19:58:32 +0100249 ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000250 if (ret < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800251 error_setg_errno(errp, errno,
252 "can't set socket option SO_REUSEADDR");
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000253 goto fail;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000254 }
255
256 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
257 if (ret < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800258 error_setg_errno(errp, errno, "can't bind ip=%s to socket",
259 inet_ntoa(mcastaddr->sin_addr));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000260 goto fail;
261 }
262
263 /* Add host to multicast group */
264 imr.imr_multiaddr = mcastaddr->sin_addr;
Mike Ryan3a75e742010-12-01 11:16:47 -0800265 if (localaddr) {
266 imr.imr_interface = *localaddr;
267 } else {
268 imr.imr_interface.s_addr = htonl(INADDR_ANY);
269 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000270
Stefan Weil9957fc72013-03-08 19:58:32 +0100271 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
272 &imr, sizeof(struct ip_mreq));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000273 if (ret < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800274 error_setg_errno(errp, errno,
275 "can't add socket to multicast group %s",
276 inet_ntoa(imr.imr_multiaddr));
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000277 goto fail;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000278 }
279
280 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
Brad23ddf2b2011-08-07 11:06:43 +0000281 loop = 1;
Stefan Weil9957fc72013-03-08 19:58:32 +0100282 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
283 &loop, sizeof(loop));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000284 if (ret < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800285 error_setg_errno(errp, errno,
286 "can't force multicast message to loopback");
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000287 goto fail;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000288 }
289
Mike Ryan3a75e742010-12-01 11:16:47 -0800290 /* If a bind address is given, only send packets from that address */
291 if (localaddr != NULL) {
Stefan Weil9957fc72013-03-08 19:58:32 +0100292 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
293 localaddr, sizeof(*localaddr));
Mike Ryan3a75e742010-12-01 11:16:47 -0800294 if (ret < 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800295 error_setg_errno(errp, errno,
296 "can't set the default network send interface");
Mike Ryan3a75e742010-12-01 11:16:47 -0800297 goto fail;
298 }
299 }
300
Stefan Hajnoczif9e8cac2013-03-27 10:10:43 +0100301 qemu_set_nonblock(fd);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000302 return fd;
303fail:
304 if (fd >= 0)
305 closesocket(fd);
306 return -1;
307}
308
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100309static void net_socket_cleanup(NetClientState *nc)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000310{
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000311 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100312 if (s->fd != -1) {
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100313 net_socket_read_poll(s, false);
314 net_socket_write_poll(s, false);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100315 close(s->fd);
316 s->fd = -1;
317 }
318 if (s->listen_fd != -1) {
319 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
320 closesocket(s->listen_fd);
321 s->listen_fd = -1;
322 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000323}
324
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000325static NetClientInfo net_dgram_socket_info = {
Eric Blakef394b2e2016-07-13 21:50:23 -0600326 .type = NET_CLIENT_DRIVER_SOCKET,
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000327 .size = sizeof(NetSocketState),
328 .receive = net_socket_receive_dgram,
329 .cleanup = net_socket_cleanup,
330};
331
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100332static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000333 const char *model,
334 const char *name,
Jens Freimann0f8c2892017-08-08 22:38:57 +0200335 int fd, int is_connected,
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800336 const char *mcast,
337 Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000338{
339 struct sockaddr_in saddr;
340 int newfd;
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100341 NetClientState *nc;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000342 NetSocketState *s;
Marc-André Lureaufdec16e2019-03-11 18:25:05 +0100343 SocketAddress *sa;
344 SocketAddressType sa_type;
345
346 sa = socket_local_address(fd, errp);
347 if (!sa) {
348 return NULL;
349 }
350 sa_type = sa->type;
351 qapi_free_SocketAddress(sa);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000352
353 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
354 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
355 * by ONLY ONE process: we must "clone" this dgram socket --jjo
356 */
357
Jens Freimann0f8c2892017-08-08 22:38:57 +0200358 if (is_connected && mcast != NULL) {
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800359 if (parse_host_port(&saddr, mcast, errp) < 0) {
Jens Freimann0f8c2892017-08-08 22:38:57 +0200360 goto err;
361 }
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000362 /* must be bound */
363 if (saddr.sin_addr.s_addr == 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800364 error_setg(errp, "can't setup multicast destination address");
Stefan Hajnoczie5d1fca2011-12-07 15:01:49 +0000365 goto err;
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000366 }
367 /* clone dgram socket */
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800368 newfd = net_socket_mcast_create(&saddr, NULL, errp);
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000369 if (newfd < 0) {
Stefan Hajnoczie5d1fca2011-12-07 15:01:49 +0000370 goto err;
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000371 }
372 /* clone newfd to fd, close newfd */
373 dup2(newfd, fd);
374 close(newfd);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000375
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000376 }
377
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100378 nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name);
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000379
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000380 s = DO_UPCAST(NetSocketState, nc, nc);
381
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000382 s->fd = fd;
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100383 s->listen_fd = -1;
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100384 s->send_fn = net_socket_send_dgram;
Zhang Chen3cde5ea2017-07-04 14:53:46 +0800385 net_socket_rs_init(&s->rs, net_socket_rs_finalize, false);
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100386 net_socket_read_poll(s, true);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000387
388 /* mcast: save bound address as dst */
Jens Freimannbb160b52017-11-06 15:05:46 +0100389 if (is_connected && mcast != NULL) {
Zhi Yong Wue34cde32012-07-20 14:25:52 +0100390 s->dgram_dst = saddr;
Jason Wang56e6f592021-04-02 11:03:33 +0800391 snprintf(nc->info_str, sizeof(nc->info_str),
392 "socket: fd=%d (cloned mcast=%s:%d)",
393 fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
Gonglei8db804a2014-11-20 19:35:01 +0800394 } else {
Marc-André Lureaufdec16e2019-03-11 18:25:05 +0100395 if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) {
396 s->dgram_dst.sin_family = AF_UNIX;
397 }
Jason Wangd89b4f82021-04-02 11:03:12 +0800398
Jason Wang56e6f592021-04-02 11:03:33 +0800399 snprintf(nc->info_str, sizeof(nc->info_str),
400 "socket: fd=%d %s", fd, SocketAddressType_str(sa_type));
Zhi Yong Wue34cde32012-07-20 14:25:52 +0100401 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000402
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000403 return s;
Stefan Hajnoczie5d1fca2011-12-07 15:01:49 +0000404
405err:
406 closesocket(fd);
407 return NULL;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000408}
409
410static void net_socket_connect(void *opaque)
411{
412 NetSocketState *s = opaque;
Stefan Hajnoczi863f6782012-08-20 10:21:54 +0100413 s->send_fn = net_socket_send;
414 net_socket_read_poll(s, true);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000415}
416
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000417static NetClientInfo net_socket_info = {
Eric Blakef394b2e2016-07-13 21:50:23 -0600418 .type = NET_CLIENT_DRIVER_SOCKET,
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000419 .size = sizeof(NetSocketState),
420 .receive = net_socket_receive,
421 .cleanup = net_socket_cleanup,
422};
423
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100424static NetSocketState *net_socket_fd_init_stream(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000425 const char *model,
426 const char *name,
427 int fd, int is_connected)
428{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100429 NetClientState *nc;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000430 NetSocketState *s;
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000431
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100432 nc = qemu_new_net_client(&net_socket_info, peer, model, name);
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000433
Jason Wang56e6f592021-04-02 11:03:33 +0800434 snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd);
Jason Wangd89b4f82021-04-02 11:03:12 +0800435
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000436 s = DO_UPCAST(NetSocketState, nc, nc);
437
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000438 s->fd = fd;
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100439 s->listen_fd = -1;
Zhang Chen3cde5ea2017-07-04 14:53:46 +0800440 net_socket_rs_init(&s->rs, net_socket_rs_finalize, false);
Mark McLoughlin564f63e2009-11-25 18:49:08 +0000441
Stefan Hajnoczi20048d02013-02-27 15:05:47 +0100442 /* Disable Nagle algorithm on TCP sockets to reduce latency */
443 socket_set_nodelay(fd);
444
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000445 if (is_connected) {
446 net_socket_connect(s);
447 } else {
448 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
449 }
450 return s;
451}
452
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100453static NetSocketState *net_socket_fd_init(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000454 const char *model, const char *name,
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800455 int fd, int is_connected,
456 const char *mc, Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000457{
458 int so_type = -1, optlen=sizeof(so_type);
459
460 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
461 (socklen_t *)&optlen)< 0) {
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800462 error_setg(errp, "can't get socket option SO_TYPE");
Stefan Hajnoczie5d1fca2011-12-07 15:01:49 +0000463 closesocket(fd);
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000464 return NULL;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000465 }
466 switch(so_type) {
467 case SOCK_DGRAM:
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800468 return net_socket_fd_init_dgram(peer, model, name, fd, is_connected,
469 mc, errp);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000470 case SOCK_STREAM:
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100471 return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000472 default:
Markus Armbruster8c42dbe2018-10-17 10:26:38 +0200473 error_setg(errp, "socket type=%d for fd=%d must be either"
474 " SOCK_DGRAM or SOCK_STREAM", so_type, fd);
Mao Zhongyie1b24b62017-09-04 22:35:37 +0800475 closesocket(fd);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000476 }
477 return NULL;
478}
479
480static void net_socket_accept(void *opaque)
481{
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100482 NetSocketState *s = opaque;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000483 struct sockaddr_in saddr;
484 socklen_t len;
485 int fd;
486
487 for(;;) {
488 len = sizeof(saddr);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100489 fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000490 if (fd < 0 && errno != EINTR) {
491 return;
492 } else if (fd >= 0) {
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100493 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000494 break;
495 }
496 }
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100497
498 s->fd = fd;
499 s->nc.link_down = false;
500 net_socket_connect(s);
Jason Wang56e6f592021-04-02 11:03:33 +0800501 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
502 "socket: connection from %s:%d",
503 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000504}
505
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100506static int net_socket_listen_init(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000507 const char *model,
508 const char *name,
Mao Zhongyi0522a952017-09-04 22:35:40 +0800509 const char *host_str,
510 Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000511{
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100512 NetClientState *nc;
513 NetSocketState *s;
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100514 struct sockaddr_in saddr;
515 int fd, ret;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000516
Mao Zhongyi0522a952017-09-04 22:35:40 +0800517 if (parse_host_port(&saddr, host_str, errp) < 0) {
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100518 return -1;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800519 }
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100520
521 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
522 if (fd < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800523 error_setg_errno(errp, errno, "can't create stream socket");
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000524 return -1;
525 }
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100526 qemu_set_nonblock(fd);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000527
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100528 socket_set_fast_reuse(fd);
529
530 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000531 if (ret < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800532 error_setg_errno(errp, errno, "can't bind ip=%s to socket",
533 inet_ntoa(saddr.sin_addr));
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100534 closesocket(fd);
535 return -1;
536 }
537 ret = listen(fd, 0);
538 if (ret < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800539 error_setg_errno(errp, errno, "can't listen on socket");
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100540 closesocket(fd);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000541 return -1;
542 }
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100543
544 nc = qemu_new_net_client(&net_socket_info, peer, model, name);
545 s = DO_UPCAST(NetSocketState, nc, nc);
546 s->fd = -1;
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100547 s->listen_fd = fd;
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100548 s->nc.link_down = true;
Zhang Chen3cde5ea2017-07-04 14:53:46 +0800549 net_socket_rs_init(&s->rs, net_socket_rs_finalize, false);
Zhi Yong Wu011de2b2012-07-20 14:25:53 +0100550
551 qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000552 return 0;
553}
554
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100555static int net_socket_connect_init(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000556 const char *model,
557 const char *name,
Mao Zhongyi0522a952017-09-04 22:35:40 +0800558 const char *host_str,
559 Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000560{
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100561 NetSocketState *s;
562 int fd, connected, ret;
563 struct sockaddr_in saddr;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000564
Mao Zhongyi0522a952017-09-04 22:35:40 +0800565 if (parse_host_port(&saddr, host_str, errp) < 0) {
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100566 return -1;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800567 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000568
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100569 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000570 if (fd < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800571 error_setg_errno(errp, errno, "can't create stream socket");
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100572 return -1;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000573 }
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100574 qemu_set_nonblock(fd);
Paolo Bonzini61601832016-08-30 14:04:12 +0200575
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100576 connected = 0;
577 for(;;) {
578 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
579 if (ret < 0) {
580 if (errno == EINTR || errno == EWOULDBLOCK) {
581 /* continue */
582 } else if (errno == EINPROGRESS ||
583 errno == EALREADY ||
584 errno == EINVAL) {
585 break;
586 } else {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800587 error_setg_errno(errp, errno, "can't connect socket");
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100588 closesocket(fd);
589 return -1;
590 }
591 } else {
592 connected = 1;
593 break;
594 }
595 }
Mao Zhongyi0522a952017-09-04 22:35:40 +0800596 s = net_socket_fd_init(peer, model, name, fd, connected, NULL, errp);
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800597 if (!s) {
Daniel P. Berrange6701e552017-05-05 17:23:05 +0100598 return -1;
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800599 }
600
Jason Wang56e6f592021-04-02 11:03:33 +0800601 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
602 "socket: connect to %s:%d",
603 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000604 return 0;
605}
606
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100607static int net_socket_mcast_init(NetClientState *peer,
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000608 const char *model,
609 const char *name,
Mike Ryan3a75e742010-12-01 11:16:47 -0800610 const char *host_str,
Mao Zhongyi0522a952017-09-04 22:35:40 +0800611 const char *localaddr_str,
612 Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000613{
614 NetSocketState *s;
615 int fd;
616 struct sockaddr_in saddr;
Mike Ryan3a75e742010-12-01 11:16:47 -0800617 struct in_addr localaddr, *param_localaddr;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000618
Mao Zhongyi0522a952017-09-04 22:35:40 +0800619 if (parse_host_port(&saddr, host_str, errp) < 0) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000620 return -1;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800621 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000622
Mike Ryan3a75e742010-12-01 11:16:47 -0800623 if (localaddr_str != NULL) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800624 if (inet_aton(localaddr_str, &localaddr) == 0) {
625 error_setg(errp, "localaddr '%s' is not a valid IPv4 address",
626 localaddr_str);
Mike Ryan3a75e742010-12-01 11:16:47 -0800627 return -1;
Mao Zhongyi0522a952017-09-04 22:35:40 +0800628 }
Mike Ryan3a75e742010-12-01 11:16:47 -0800629 param_localaddr = &localaddr;
630 } else {
631 param_localaddr = NULL;
632 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000633
Mao Zhongyi0522a952017-09-04 22:35:40 +0800634 fd = net_socket_mcast_create(&saddr, param_localaddr, errp);
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800635 if (fd < 0) {
Stefan Hajnoczi842480d2011-12-07 15:01:48 +0000636 return -1;
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800637 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000638
Mao Zhongyi0522a952017-09-04 22:35:40 +0800639 s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp);
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800640 if (!s) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000641 return -1;
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800642 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000643
644 s->dgram_dst = saddr;
645
Jason Wang56e6f592021-04-02 11:03:33 +0800646 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
647 "socket: mcast=%s:%d",
648 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000649 return 0;
Jason Wangd89b4f82021-04-02 11:03:12 +0800650
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000651}
652
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100653static int net_socket_udp_init(NetClientState *peer,
Benjamin0e0e7fa2012-01-11 09:20:54 +0900654 const char *model,
655 const char *name,
656 const char *rhost,
Mao Zhongyi0522a952017-09-04 22:35:40 +0800657 const char *lhost,
658 Error **errp)
Benjamin0e0e7fa2012-01-11 09:20:54 +0900659{
660 NetSocketState *s;
Sebastian Ottlikbcbe92f2013-10-02 12:23:14 +0200661 int fd, ret;
Benjamin0e0e7fa2012-01-11 09:20:54 +0900662 struct sockaddr_in laddr, raddr;
663
Mao Zhongyi0522a952017-09-04 22:35:40 +0800664 if (parse_host_port(&laddr, lhost, errp) < 0) {
Benjamin0e0e7fa2012-01-11 09:20:54 +0900665 return -1;
666 }
667
Mao Zhongyi0522a952017-09-04 22:35:40 +0800668 if (parse_host_port(&raddr, rhost, errp) < 0) {
Benjamin0e0e7fa2012-01-11 09:20:54 +0900669 return -1;
670 }
671
672 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
673 if (fd < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800674 error_setg_errno(errp, errno, "can't create datagram socket");
Benjamin0e0e7fa2012-01-11 09:20:54 +0900675 return -1;
676 }
Sebastian Ottlikbcbe92f2013-10-02 12:23:14 +0200677
678 ret = socket_set_fast_reuse(fd);
Benjamin0e0e7fa2012-01-11 09:20:54 +0900679 if (ret < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800680 error_setg_errno(errp, errno,
681 "can't set socket option SO_REUSEADDR");
Benjamin0e0e7fa2012-01-11 09:20:54 +0900682 closesocket(fd);
683 return -1;
684 }
685 ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr));
686 if (ret < 0) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800687 error_setg_errno(errp, errno, "can't bind ip=%s to socket",
688 inet_ntoa(laddr.sin_addr));
Benjamin0e0e7fa2012-01-11 09:20:54 +0900689 closesocket(fd);
690 return -1;
691 }
Stefan Hajnoczifc13fa02013-03-27 10:10:44 +0100692 qemu_set_nonblock(fd);
Benjamin0e0e7fa2012-01-11 09:20:54 +0900693
Mao Zhongyi0522a952017-09-04 22:35:40 +0800694 s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp);
Benjamin0e0e7fa2012-01-11 09:20:54 +0900695 if (!s) {
696 return -1;
697 }
698
699 s->dgram_dst = raddr;
700
Jason Wang56e6f592021-04-02 11:03:33 +0800701 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
702 "socket: udp=%s:%d",
703 inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port));
Benjamin0e0e7fa2012-01-11 09:20:54 +0900704 return 0;
705}
706
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600707int net_init_socket(const Netdev *netdev, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200708 NetClientState *peer, Error **errp)
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000709{
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200710 const NetdevSocketOptions *sock;
711
Eric Blakef394b2e2016-07-13 21:50:23 -0600712 assert(netdev->type == NET_CLIENT_DRIVER_SOCKET);
713 sock = &netdev->u.socket;
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200714
Jens Freimannff86d572017-09-27 17:21:18 +0200715 if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast +
716 sock->has_udp != 1) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800717 error_setg(errp, "exactly one of listen=, connect=, mcast= or udp="
718 " is required");
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200719 return -1;
720 }
721
722 if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800723 error_setg(errp, "localaddr= is only valid with mcast= or udp=");
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200724 return -1;
725 }
726
727 if (sock->has_fd) {
Laurent Vivier894022e2020-07-07 20:45:14 +0200728 int fd, ret;
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000729
Kevin Wolf947e4742020-10-05 17:58:44 +0200730 fd = monitor_fd_param(monitor_cur(), sock->fd, errp);
Stefan Hajnoczifc13fa02013-03-27 10:10:44 +0100731 if (fd == -1) {
732 return -1;
733 }
Laurent Vivier894022e2020-07-07 20:45:14 +0200734 ret = qemu_try_set_nonblock(fd);
735 if (ret < 0) {
736 error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
737 name, fd);
738 return -1;
739 }
Mao Zhongyic37f0bb2017-09-04 22:35:38 +0800740 if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast,
741 errp)) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000742 return -1;
743 }
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200744 return 0;
745 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000746
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200747 if (sock->has_listen) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800748 if (net_socket_listen_init(peer, "socket", name, sock->listen, errp)
749 < 0) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000750 return -1;
751 }
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200752 return 0;
753 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000754
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200755 if (sock->has_connect) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800756 if (net_socket_connect_init(peer, "socket", name, sock->connect, errp)
757 < 0) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000758 return -1;
759 }
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200760 return 0;
761 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000762
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200763 if (sock->has_mcast) {
764 /* if sock->localaddr is missing, it has been initialized to "all bits
765 * zero" */
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100766 if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
Mao Zhongyi0522a952017-09-04 22:35:40 +0800767 sock->localaddr, errp) < 0) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000768 return -1;
769 }
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200770 return 0;
771 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000772
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200773 assert(sock->has_udp);
774 if (!sock->has_localaddr) {
Mao Zhongyi0522a952017-09-04 22:35:40 +0800775 error_setg(errp, "localaddr= is mandatory with udp=");
Laszlo Ersekbef8e8f2012-07-17 16:17:17 +0200776 return -1;
777 }
Mao Zhongyi0522a952017-09-04 22:35:40 +0800778 if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr,
779 errp) < 0) {
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000780 return -1;
781 }
Mark McLoughlin42281ac2009-11-25 18:48:56 +0000782 return 0;
783}