Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 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 | */ |
Peter Maydell | 2744d92 | 2016-01-29 17:50:00 +0000 | [diff] [blame] | 24 | #include "qemu/osdep.h" |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 25 | |
Paolo Bonzini | 1422e32 | 2012-10-24 08:43:34 +0200 | [diff] [blame] | 26 | #include "net/net.h" |
Paolo Bonzini | a245fc1 | 2012-09-17 18:43:51 +0200 | [diff] [blame] | 27 | #include "clients.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 28 | #include "monitor/monitor.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 29 | #include "qapi/error.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 30 | #include "qemu/error-report.h" |
| 31 | #include "qemu/option.h" |
| 32 | #include "qemu/sockets.h" |
| 33 | #include "qemu/iov.h" |
Alex Bligh | 6a1751b | 2013-08-21 16:02:47 +0100 | [diff] [blame] | 34 | #include "qemu/main-loop.h" |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 35 | |
| 36 | typedef struct NetSocketState { |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 37 | NetClientState nc; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 38 | int listen_fd; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 39 | int fd; |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 40 | SocketReadState rs; |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 41 | unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 42 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 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? */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 46 | } NetSocketState; |
| 47 | |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 48 | static void net_socket_accept(void *opaque); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 49 | static void net_socket_writable(void *opaque); |
| 50 | |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 51 | static void net_socket_update_fd_handler(NetSocketState *s) |
| 52 | { |
Fam Zheng | 82e1cc4 | 2015-06-04 14:45:18 +0800 | [diff] [blame] | 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); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 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 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 79 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 80 | static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 81 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 82 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 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; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 95 | |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 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; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 113 | } |
| 114 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 115 | static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 116 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 117 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Stefan Hajnoczi | 213fd50 | 2012-08-20 10:28:53 +0100 | [diff] [blame] | 118 | ssize_t ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 119 | |
Nikita Ivanov | 37b0b24 | 2022-10-23 12:04:22 +0300 | [diff] [blame] | 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 | ); |
Stefan Hajnoczi | 213fd50 | 2012-08-20 10:28:53 +0100 | [diff] [blame] | 127 | |
| 128 | if (ret == -1 && errno == EAGAIN) { |
| 129 | net_socket_write_poll(s, true); |
| 130 | return 0; |
| 131 | } |
| 132 | return ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 133 | } |
| 134 | |
Fam Zheng | 6e99c63 | 2015-06-04 14:45:16 +0800 | [diff] [blame] | 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 | |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 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 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 155 | static void net_socket_send(void *opaque) |
| 156 | { |
| 157 | NetSocketState *s = opaque; |
Daniel P. Berrange | b16a44e | 2016-03-07 20:36:03 +0000 | [diff] [blame] | 158 | int size; |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 159 | int ret; |
Scott Feldman | d32fcad | 2013-03-18 11:43:44 -0700 | [diff] [blame] | 160 | uint8_t buf1[NET_BUFSIZE]; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 161 | const uint8_t *buf; |
| 162 | |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 163 | size = recv(s->fd, buf1, sizeof(buf1), 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 164 | if (size < 0) { |
Daniel P. Berrange | b16a44e | 2016-03-07 20:36:03 +0000 | [diff] [blame] | 165 | if (errno != EWOULDBLOCK) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 166 | goto eoc; |
| 167 | } else if (size == 0) { |
| 168 | /* end of connection */ |
| 169 | eoc: |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 170 | net_socket_read_poll(s, false); |
| 171 | net_socket_write_poll(s, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 172 | if (s->listen_fd != -1) { |
| 173 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); |
| 174 | } |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 175 | close(s->fd); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 176 | |
| 177 | s->fd = -1; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 178 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 179 | s->nc.link_down = true; |
Stefan Weil via | ac14949 | 2022-11-26 16:25:07 +0100 | [diff] [blame] | 180 | qemu_set_info_str(&s->nc, "%s", ""); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 181 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 182 | return; |
| 183 | } |
| 184 | buf = buf1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 185 | |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 186 | ret = net_fill_rstate(&s->rs, buf, size); |
| 187 | |
| 188 | if (ret == -1) { |
| 189 | goto eoc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 190 | } |
| 191 | } |
| 192 | |
| 193 | static void net_socket_send_dgram(void *opaque) |
| 194 | { |
| 195 | NetSocketState *s = opaque; |
| 196 | int size; |
| 197 | |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 198 | size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 199 | if (size < 0) |
| 200 | return; |
| 201 | if (size == 0) { |
| 202 | /* end of connection */ |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 203 | net_socket_read_poll(s, false); |
| 204 | net_socket_write_poll(s, false); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 205 | return; |
| 206 | } |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 207 | if (qemu_send_packet_async(&s->nc, s->rs.buf, size, |
Fam Zheng | 6e99c63 | 2015-06-04 14:45:16 +0800 | [diff] [blame] | 208 | net_socket_send_completed) == 0) { |
| 209 | net_socket_read_poll(s, false); |
| 210 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 211 | } |
| 212 | |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 213 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, |
| 214 | struct in_addr *localaddr, |
| 215 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 216 | { |
| 217 | struct ip_mreq imr; |
| 218 | int fd; |
| 219 | int val, ret; |
Brad | 23ddf2b | 2011-08-07 11:06:43 +0000 | [diff] [blame] | 220 | #ifdef __OpenBSD__ |
| 221 | unsigned char loop; |
| 222 | #else |
| 223 | int loop; |
| 224 | #endif |
| 225 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 226 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 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)); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 231 | return -1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 232 | } |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 233 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 234 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 235 | if (fd < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 236 | error_setg_errno(errp, errno, "can't create datagram socket"); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 237 | return -1; |
| 238 | } |
| 239 | |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 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 | */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 245 | val = 1; |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 246 | ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 247 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 248 | error_setg_errno(errp, errno, |
| 249 | "can't set socket option SO_REUSEADDR"); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 250 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
| 254 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 255 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 256 | inet_ntoa(mcastaddr->sin_addr)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 257 | goto fail; |
| 258 | } |
| 259 | |
| 260 | /* Add host to multicast group */ |
| 261 | imr.imr_multiaddr = mcastaddr->sin_addr; |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 262 | if (localaddr) { |
| 263 | imr.imr_interface = *localaddr; |
| 264 | } else { |
| 265 | imr.imr_interface.s_addr = htonl(INADDR_ANY); |
| 266 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 267 | |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 268 | ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
| 269 | &imr, sizeof(struct ip_mreq)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 270 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 271 | error_setg_errno(errp, errno, |
| 272 | "can't add socket to multicast group %s", |
| 273 | inet_ntoa(imr.imr_multiaddr)); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 274 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ |
Brad | 23ddf2b | 2011-08-07 11:06:43 +0000 | [diff] [blame] | 278 | loop = 1; |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 279 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
| 280 | &loop, sizeof(loop)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 281 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 282 | error_setg_errno(errp, errno, |
| 283 | "can't force multicast message to loopback"); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 284 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 285 | } |
| 286 | |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 287 | /* If a bind address is given, only send packets from that address */ |
| 288 | if (localaddr != NULL) { |
Marc-André Lureau | e7b7942 | 2022-02-19 01:34:50 +0400 | [diff] [blame] | 289 | ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 290 | localaddr, sizeof(*localaddr)); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 291 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 292 | error_setg_errno(errp, errno, |
| 293 | "can't set the default network send interface"); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 294 | goto fail; |
| 295 | } |
| 296 | } |
| 297 | |
Marc-André Lureau | ff5927b | 2022-04-25 17:33:47 +0400 | [diff] [blame] | 298 | qemu_socket_set_nonblock(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 299 | return fd; |
| 300 | fail: |
| 301 | if (fd >= 0) |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 302 | close(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 303 | return -1; |
| 304 | } |
| 305 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 306 | static void net_socket_cleanup(NetClientState *nc) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 307 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 308 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 309 | if (s->fd != -1) { |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 310 | net_socket_read_poll(s, false); |
| 311 | net_socket_write_poll(s, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 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); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 317 | close(s->listen_fd); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 318 | s->listen_fd = -1; |
| 319 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 320 | } |
| 321 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 322 | static NetClientInfo net_dgram_socket_info = { |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 323 | .type = NET_CLIENT_DRIVER_SOCKET, |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 324 | .size = sizeof(NetSocketState), |
| 325 | .receive = net_socket_receive_dgram, |
| 326 | .cleanup = net_socket_cleanup, |
| 327 | }; |
| 328 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 329 | static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 330 | const char *model, |
| 331 | const char *name, |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 332 | int fd, int is_connected, |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 333 | const char *mcast, |
| 334 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 335 | { |
| 336 | struct sockaddr_in saddr; |
| 337 | int newfd; |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 338 | NetClientState *nc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 339 | NetSocketState *s; |
Marc-André Lureau | fdec16e | 2019-03-11 18:25:05 +0100 | [diff] [blame] | 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); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 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 | |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 355 | if (is_connected && mcast != NULL) { |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 356 | if (parse_host_port(&saddr, mcast, errp) < 0) { |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 357 | goto err; |
| 358 | } |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 359 | /* must be bound */ |
| 360 | if (saddr.sin_addr.s_addr == 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 361 | error_setg(errp, "can't setup multicast destination address"); |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 362 | goto err; |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 363 | } |
| 364 | /* clone dgram socket */ |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 365 | newfd = net_socket_mcast_create(&saddr, NULL, errp); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 366 | if (newfd < 0) { |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 367 | goto err; |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 368 | } |
| 369 | /* clone newfd to fd, close newfd */ |
| 370 | dup2(newfd, fd); |
| 371 | close(newfd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 372 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 373 | } |
| 374 | |
Stefan Hajnoczi | ab5f3f8 | 2012-07-24 16:35:08 +0100 | [diff] [blame] | 375 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 376 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 377 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 378 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 379 | s->fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 380 | s->listen_fd = -1; |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 381 | s->send_fn = net_socket_send_dgram; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 382 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 383 | net_socket_read_poll(s, true); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 384 | |
| 385 | /* mcast: save bound address as dst */ |
Jens Freimann | bb160b5 | 2017-11-06 15:05:46 +0100 | [diff] [blame] | 386 | if (is_connected && mcast != NULL) { |
Zhi Yong Wu | e34cde3 | 2012-07-20 14:25:52 +0100 | [diff] [blame] | 387 | s->dgram_dst = saddr; |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 388 | qemu_set_info_str(nc, "socket: fd=%d (cloned mcast=%s:%d)", fd, |
| 389 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Gonglei | 8db804a | 2014-11-20 19:35:01 +0800 | [diff] [blame] | 390 | } else { |
Marc-André Lureau | fdec16e | 2019-03-11 18:25:05 +0100 | [diff] [blame] | 391 | if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { |
| 392 | s->dgram_dst.sin_family = AF_UNIX; |
| 393 | } |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 394 | |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 395 | qemu_set_info_str(nc, "socket: fd=%d %s", fd, |
| 396 | SocketAddressType_str(sa_type)); |
Zhi Yong Wu | e34cde3 | 2012-07-20 14:25:52 +0100 | [diff] [blame] | 397 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 398 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 399 | return s; |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 400 | |
| 401 | err: |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 402 | close(fd); |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 403 | return NULL; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | static void net_socket_connect(void *opaque) |
| 407 | { |
| 408 | NetSocketState *s = opaque; |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 409 | s->send_fn = net_socket_send; |
| 410 | net_socket_read_poll(s, true); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 411 | } |
| 412 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 413 | static NetClientInfo net_socket_info = { |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 414 | .type = NET_CLIENT_DRIVER_SOCKET, |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 415 | .size = sizeof(NetSocketState), |
| 416 | .receive = net_socket_receive, |
| 417 | .cleanup = net_socket_cleanup, |
| 418 | }; |
| 419 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 420 | static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 421 | const char *model, |
| 422 | const char *name, |
| 423 | int fd, int is_connected) |
| 424 | { |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 425 | NetClientState *nc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 426 | NetSocketState *s; |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 427 | |
Stefan Hajnoczi | ab5f3f8 | 2012-07-24 16:35:08 +0100 | [diff] [blame] | 428 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 429 | |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 430 | qemu_set_info_str(nc, "socket: fd=%d", fd); |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 431 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 432 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 433 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 434 | s->fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 435 | s->listen_fd = -1; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 436 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 437 | |
Stefan Hajnoczi | 20048d0 | 2013-02-27 15:05:47 +0100 | [diff] [blame] | 438 | /* Disable Nagle algorithm on TCP sockets to reduce latency */ |
| 439 | socket_set_nodelay(fd); |
| 440 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 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 | |
Laurent Vivier | 23455ae | 2023-06-09 09:27:47 +0200 | [diff] [blame] | 449 | static int net_socket_fd_check(int fd, Error **errp) |
| 450 | { |
| 451 | int so_type, optlen = sizeof(so_type); |
| 452 | |
| 453 | if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
| 454 | (socklen_t *)&optlen) < 0) { |
| 455 | error_setg(errp, "can't get socket option SO_TYPE"); |
| 456 | return -1; |
| 457 | } |
| 458 | if (so_type != SOCK_DGRAM && so_type != SOCK_STREAM) { |
| 459 | error_setg(errp, "socket type=%d for fd=%d must be either" |
| 460 | " SOCK_DGRAM or SOCK_STREAM", so_type, fd); |
| 461 | return -1; |
| 462 | } |
| 463 | return so_type; |
| 464 | } |
| 465 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 466 | static void net_socket_accept(void *opaque) |
| 467 | { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 468 | NetSocketState *s = opaque; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 469 | struct sockaddr_in saddr; |
| 470 | socklen_t len; |
| 471 | int fd; |
| 472 | |
| 473 | for(;;) { |
| 474 | len = sizeof(saddr); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 475 | fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 476 | if (fd < 0 && errno != EINTR) { |
| 477 | return; |
| 478 | } else if (fd >= 0) { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 479 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 480 | break; |
| 481 | } |
| 482 | } |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 483 | |
| 484 | s->fd = fd; |
| 485 | s->nc.link_down = false; |
| 486 | net_socket_connect(s); |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 487 | qemu_set_info_str(&s->nc, "socket: connection from %s:%d", |
| 488 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 489 | } |
| 490 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 491 | static int net_socket_listen_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 492 | const char *model, |
| 493 | const char *name, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 494 | const char *host_str, |
| 495 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 496 | { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 497 | NetClientState *nc; |
| 498 | NetSocketState *s; |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 499 | struct sockaddr_in saddr; |
| 500 | int fd, ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 501 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 502 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 503 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 504 | } |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 505 | |
| 506 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
| 507 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 508 | error_setg_errno(errp, errno, "can't create stream socket"); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 509 | return -1; |
| 510 | } |
Marc-André Lureau | ff5927b | 2022-04-25 17:33:47 +0400 | [diff] [blame] | 511 | qemu_socket_set_nonblock(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 512 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 513 | socket_set_fast_reuse(fd); |
| 514 | |
| 515 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 516 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 517 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 518 | inet_ntoa(saddr.sin_addr)); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 519 | close(fd); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 520 | return -1; |
| 521 | } |
| 522 | ret = listen(fd, 0); |
| 523 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 524 | error_setg_errno(errp, errno, "can't listen on socket"); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 525 | close(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 526 | return -1; |
| 527 | } |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 528 | |
| 529 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
| 530 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 531 | s->fd = -1; |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 532 | s->listen_fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 533 | s->nc.link_down = true; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 534 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 535 | |
| 536 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 537 | return 0; |
| 538 | } |
| 539 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 540 | static int net_socket_connect_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 541 | const char *model, |
| 542 | const char *name, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 543 | const char *host_str, |
| 544 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 545 | { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 546 | NetSocketState *s; |
| 547 | int fd, connected, ret; |
| 548 | struct sockaddr_in saddr; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 549 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 550 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 551 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 552 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 553 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 554 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 555 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 556 | error_setg_errno(errp, errno, "can't create stream socket"); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 557 | return -1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 558 | } |
Marc-André Lureau | ff5927b | 2022-04-25 17:33:47 +0400 | [diff] [blame] | 559 | qemu_socket_set_nonblock(fd); |
Paolo Bonzini | 6160183 | 2016-08-30 14:04:12 +0200 | [diff] [blame] | 560 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 561 | connected = 0; |
| 562 | for(;;) { |
| 563 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| 564 | if (ret < 0) { |
| 565 | if (errno == EINTR || errno == EWOULDBLOCK) { |
| 566 | /* continue */ |
| 567 | } else if (errno == EINPROGRESS || |
Stefano Brivio | daf188f | 2022-10-21 11:09:12 +0200 | [diff] [blame] | 568 | errno == EALREADY) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 569 | break; |
| 570 | } else { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 571 | error_setg_errno(errp, errno, "can't connect socket"); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 572 | close(fd); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 573 | return -1; |
| 574 | } |
| 575 | } else { |
| 576 | connected = 1; |
| 577 | break; |
| 578 | } |
| 579 | } |
Laurent Vivier | 006c3fa | 2023-06-09 09:27:46 +0200 | [diff] [blame] | 580 | s = net_socket_fd_init_stream(peer, model, name, fd, connected); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 581 | if (!s) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 582 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 583 | } |
| 584 | |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 585 | qemu_set_info_str(&s->nc, "socket: connect to %s:%d", |
| 586 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 587 | return 0; |
| 588 | } |
| 589 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 590 | static int net_socket_mcast_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 591 | const char *model, |
| 592 | const char *name, |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 593 | const char *host_str, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 594 | const char *localaddr_str, |
| 595 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 596 | { |
| 597 | NetSocketState *s; |
| 598 | int fd; |
| 599 | struct sockaddr_in saddr; |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 600 | struct in_addr localaddr, *param_localaddr; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 601 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 602 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 603 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 604 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 605 | |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 606 | if (localaddr_str != NULL) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 607 | if (inet_aton(localaddr_str, &localaddr) == 0) { |
| 608 | error_setg(errp, "localaddr '%s' is not a valid IPv4 address", |
| 609 | localaddr_str); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 610 | return -1; |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 611 | } |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 612 | param_localaddr = &localaddr; |
| 613 | } else { |
| 614 | param_localaddr = NULL; |
| 615 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 616 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 617 | fd = net_socket_mcast_create(&saddr, param_localaddr, errp); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 618 | if (fd < 0) { |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 619 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 620 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 621 | |
Laurent Vivier | 006c3fa | 2023-06-09 09:27:46 +0200 | [diff] [blame] | 622 | s = net_socket_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 623 | if (!s) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 624 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 625 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 626 | |
| 627 | s->dgram_dst = saddr; |
| 628 | |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 629 | qemu_set_info_str(&s->nc, "socket: mcast=%s:%d", |
| 630 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 631 | return 0; |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 632 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 633 | } |
| 634 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 635 | static int net_socket_udp_init(NetClientState *peer, |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 636 | const char *model, |
| 637 | const char *name, |
| 638 | const char *rhost, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 639 | const char *lhost, |
| 640 | Error **errp) |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 641 | { |
| 642 | NetSocketState *s; |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 643 | int fd, ret; |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 644 | struct sockaddr_in laddr, raddr; |
| 645 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 646 | if (parse_host_port(&laddr, lhost, errp) < 0) { |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 647 | return -1; |
| 648 | } |
| 649 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 650 | if (parse_host_port(&raddr, rhost, errp) < 0) { |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 651 | return -1; |
| 652 | } |
| 653 | |
| 654 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
| 655 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 656 | error_setg_errno(errp, errno, "can't create datagram socket"); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 657 | return -1; |
| 658 | } |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 659 | |
| 660 | ret = socket_set_fast_reuse(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 661 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 662 | error_setg_errno(errp, errno, |
| 663 | "can't set socket option SO_REUSEADDR"); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 664 | close(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 665 | return -1; |
| 666 | } |
| 667 | ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); |
| 668 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 669 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 670 | inet_ntoa(laddr.sin_addr)); |
Marc-André Lureau | 25657fc | 2023-02-21 16:48:01 +0400 | [diff] [blame] | 671 | close(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 672 | return -1; |
| 673 | } |
Marc-André Lureau | ff5927b | 2022-04-25 17:33:47 +0400 | [diff] [blame] | 674 | qemu_socket_set_nonblock(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 675 | |
Laurent Vivier | 006c3fa | 2023-06-09 09:27:46 +0200 | [diff] [blame] | 676 | s = net_socket_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 677 | if (!s) { |
| 678 | return -1; |
| 679 | } |
| 680 | |
| 681 | s->dgram_dst = raddr; |
| 682 | |
Laurent Vivier | 53b85d9 | 2022-10-21 11:09:10 +0200 | [diff] [blame] | 683 | qemu_set_info_str(&s->nc, "socket: udp=%s:%d", inet_ntoa(raddr.sin_addr), |
| 684 | ntohs(raddr.sin_port)); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 685 | return 0; |
| 686 | } |
| 687 | |
Kővágó, Zoltán | cebea51 | 2016-07-13 21:50:12 -0600 | [diff] [blame] | 688 | int net_init_socket(const Netdev *netdev, const char *name, |
Markus Armbruster | a30ecde | 2015-05-15 13:58:50 +0200 | [diff] [blame] | 689 | NetClientState *peer, Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 690 | { |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 691 | const NetdevSocketOptions *sock; |
| 692 | |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 693 | assert(netdev->type == NET_CLIENT_DRIVER_SOCKET); |
| 694 | sock = &netdev->u.socket; |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 695 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 696 | if (!!sock->fd + !!sock->listen + !!sock->connect + !!sock->mcast + |
| 697 | !!sock->udp != 1) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 698 | error_setg(errp, "exactly one of listen=, connect=, mcast= or udp=" |
| 699 | " is required"); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 700 | return -1; |
| 701 | } |
| 702 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 703 | if (sock->localaddr && !sock->mcast && !sock->udp) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 704 | error_setg(errp, "localaddr= is only valid with mcast= or udp="); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 705 | return -1; |
| 706 | } |
| 707 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 708 | if (sock->fd) { |
Laurent Vivier | b6aeee0 | 2023-06-09 09:27:48 +0200 | [diff] [blame] | 709 | int fd, ret, so_type; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 710 | |
Kevin Wolf | 947e474 | 2020-10-05 17:58:44 +0200 | [diff] [blame] | 711 | fd = monitor_fd_param(monitor_cur(), sock->fd, errp); |
Stefan Hajnoczi | fc13fa0 | 2013-03-27 10:10:44 +0100 | [diff] [blame] | 712 | if (fd == -1) { |
| 713 | return -1; |
| 714 | } |
Laurent Vivier | b6aeee0 | 2023-06-09 09:27:48 +0200 | [diff] [blame] | 715 | so_type = net_socket_fd_check(fd, errp); |
| 716 | if (so_type < 0) { |
| 717 | return -1; |
| 718 | } |
Marc-André Lureau | ff5927b | 2022-04-25 17:33:47 +0400 | [diff] [blame] | 719 | ret = qemu_socket_try_set_nonblock(fd); |
Laurent Vivier | 894022e | 2020-07-07 20:45:14 +0200 | [diff] [blame] | 720 | if (ret < 0) { |
| 721 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", |
| 722 | name, fd); |
| 723 | return -1; |
| 724 | } |
Laurent Vivier | b6aeee0 | 2023-06-09 09:27:48 +0200 | [diff] [blame] | 725 | switch (so_type) { |
| 726 | case SOCK_DGRAM: |
| 727 | if (!net_socket_fd_init_dgram(peer, "socket", name, fd, 1, |
| 728 | sock->mcast, errp)) { |
| 729 | return -1; |
| 730 | } |
| 731 | break; |
| 732 | case SOCK_STREAM: |
| 733 | if (!net_socket_fd_init_stream(peer, "socket", name, fd, 1)) { |
| 734 | return -1; |
| 735 | } |
| 736 | break; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 737 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 738 | return 0; |
| 739 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 740 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 741 | if (sock->listen) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 742 | if (net_socket_listen_init(peer, "socket", name, sock->listen, errp) |
| 743 | < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 744 | return -1; |
| 745 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 746 | return 0; |
| 747 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 748 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 749 | if (sock->connect) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 750 | if (net_socket_connect_init(peer, "socket", name, sock->connect, errp) |
| 751 | < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 752 | return -1; |
| 753 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 754 | return 0; |
| 755 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 756 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 757 | if (sock->mcast) { |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 758 | /* if sock->localaddr is missing, it has been initialized to "all bits |
| 759 | * zero" */ |
Stefan Hajnoczi | d33d93b | 2012-07-24 16:35:05 +0100 | [diff] [blame] | 760 | if (net_socket_mcast_init(peer, "socket", name, sock->mcast, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 761 | sock->localaddr, errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 762 | return -1; |
| 763 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 764 | return 0; |
| 765 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 766 | |
Markus Armbruster | 7480874 | 2022-11-04 17:07:00 +0100 | [diff] [blame] | 767 | assert(sock->udp); |
| 768 | if (!sock->localaddr) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 769 | error_setg(errp, "localaddr= is mandatory with udp="); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 770 | return -1; |
| 771 | } |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 772 | if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr, |
| 773 | errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 774 | return -1; |
| 775 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 776 | return 0; |
| 777 | } |