4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
26 #include "config-host.h"
29 #include "net/socket.h"
31 #include "net/slirp.h"
35 #include "qemu-common.h"
36 #include "qemu_socket.h"
40 static QTAILQ_HEAD(, VLANState) vlans;
41 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
45 /***********************************************************/
46 /* network device redirectors */
48 #if defined(DEBUG_NET)
49 static void hex_dump(FILE *f, const uint8_t *buf, int size)
53 for(i=0;i<size;i+=16) {
57 fprintf(f, "%08x ", i);
60 fprintf(f, " %02x", buf[i+j]);
67 if (c < ' ' || c > '~')
76 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
87 if (len > buf_size - 1)
96 int parse_host_port(struct sockaddr_in *saddr, const char *str)
104 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
106 saddr->sin_family = AF_INET;
107 if (buf[0] == '\0') {
108 saddr->sin_addr.s_addr = 0;
110 if (qemu_isdigit(buf[0])) {
111 if (!inet_aton(buf, &saddr->sin_addr))
114 if ((he = gethostbyname(buf)) == NULL)
116 saddr->sin_addr = *(struct in_addr *)he->h_addr;
119 port = strtol(p, (char **)&r, 0);
122 saddr->sin_port = htons(port);
126 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
128 snprintf(vc->info_str, sizeof(vc->info_str),
129 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
131 macaddr[0], macaddr[1], macaddr[2],
132 macaddr[3], macaddr[4], macaddr[5]);
135 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
137 static int index = 0;
138 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
140 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
142 macaddr->a[0] = 0x52;
143 macaddr->a[1] = 0x54;
144 macaddr->a[2] = 0x00;
145 macaddr->a[3] = 0x12;
146 macaddr->a[4] = 0x34;
147 macaddr->a[5] = 0x56 + index++;
150 static char *assign_name(VLANClientState *vc1, const char *model)
156 QTAILQ_FOREACH(vlan, &vlans, next) {
159 QTAILQ_FOREACH(vc, &vlan->clients, next) {
160 if (vc != vc1 && strcmp(vc->model, model) == 0) {
166 snprintf(buf, sizeof(buf), "%s.%d", model, id);
168 return qemu_strdup(buf);
171 static ssize_t qemu_deliver_packet(VLANClientState *sender,
176 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
178 const struct iovec *iov,
182 VLANClientState *qemu_new_net_client(NetClientInfo *info,
184 VLANClientState *peer,
190 assert(info->size >= sizeof(VLANClientState));
192 vc = qemu_mallocz(info->size);
195 vc->model = qemu_strdup(model);
197 vc->name = qemu_strdup(name);
199 vc->name = assign_name(vc, model);
205 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
212 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
214 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
215 qemu_deliver_packet_iov,
222 NICState *qemu_new_nic(NetClientInfo *info,
231 assert(info->type == NET_CLIENT_TYPE_NIC);
232 assert(info->size >= sizeof(NICState));
234 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
236 nic = DO_UPCAST(NICState, nc, nc);
238 nic->opaque = opaque;
243 static void qemu_cleanup_vlan_client(VLANClientState *vc)
246 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
248 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
251 if (vc->info->cleanup) {
252 vc->info->cleanup(vc);
256 static void qemu_free_vlan_client(VLANClientState *vc)
259 if (vc->send_queue) {
260 qemu_del_net_queue(vc->send_queue);
263 vc->peer->peer = NULL;
267 qemu_free(vc->model);
271 void qemu_del_vlan_client(VLANClientState *vc)
273 /* If there is a peer NIC, delete and cleanup client, but do not free. */
274 if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
275 NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
276 if (nic->peer_deleted) {
279 nic->peer_deleted = true;
280 /* Let NIC know peer is gone. */
281 vc->peer->link_down = true;
282 if (vc->peer->info->link_status_changed) {
283 vc->peer->info->link_status_changed(vc->peer);
285 qemu_cleanup_vlan_client(vc);
289 /* If this is a peer NIC and peer has already been deleted, free it now. */
290 if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
291 NICState *nic = DO_UPCAST(NICState, nc, vc);
292 if (nic->peer_deleted) {
293 qemu_free_vlan_client(vc->peer);
297 qemu_cleanup_vlan_client(vc);
298 qemu_free_vlan_client(vc);
302 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
303 const char *client_str)
308 vlan = qemu_find_vlan(vlan_id, 0);
310 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
314 QTAILQ_FOREACH(vc, &vlan->clients, next) {
315 if (!strcmp(vc->name, client_str)) {
320 monitor_printf(mon, "can't find device %s on VLAN %d\n",
321 client_str, vlan_id);
327 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
332 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
333 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
334 func(DO_UPCAST(NICState, nc, nc), opaque);
338 QTAILQ_FOREACH(vlan, &vlans, next) {
339 QTAILQ_FOREACH(nc, &vlan->clients, next) {
340 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
341 func(DO_UPCAST(NICState, nc, nc), opaque);
347 int qemu_can_send_packet(VLANClientState *sender)
349 VLANState *vlan = sender->vlan;
353 if (sender->peer->receive_disabled) {
355 } else if (sender->peer->info->can_receive &&
356 !sender->peer->info->can_receive(sender->peer)) {
367 QTAILQ_FOREACH(vc, &vlan->clients, next) {
372 /* no can_receive() handler, they can always receive */
373 if (vc->info->can_receive && !vc->info->can_receive(vc)) {
380 static ssize_t qemu_deliver_packet(VLANClientState *sender,
386 VLANClientState *vc = opaque;
393 if (vc->receive_disabled) {
397 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
398 ret = vc->info->receive_raw(vc, data, size);
400 ret = vc->info->receive(vc, data, size);
404 vc->receive_disabled = 1;
410 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
416 VLANState *vlan = opaque;
420 QTAILQ_FOREACH(vc, &vlan->clients, next) {
432 if (vc->receive_disabled) {
437 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
438 len = vc->info->receive_raw(vc, buf, size);
440 len = vc->info->receive(vc, buf, size);
444 vc->receive_disabled = 1;
447 ret = (ret >= 0) ? ret : len;
454 void qemu_purge_queued_packets(VLANClientState *vc)
458 if (!vc->peer && !vc->vlan) {
463 queue = vc->peer->send_queue;
465 queue = vc->vlan->send_queue;
468 qemu_net_queue_purge(queue, vc);
471 void qemu_flush_queued_packets(VLANClientState *vc)
475 vc->receive_disabled = 0;
478 queue = vc->vlan->send_queue;
480 queue = vc->send_queue;
483 qemu_net_queue_flush(queue);
486 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
488 const uint8_t *buf, int size,
489 NetPacketSent *sent_cb)
494 printf("qemu_send_packet_async:\n");
495 hex_dump(stdout, buf, size);
498 if (sender->link_down || (!sender->peer && !sender->vlan)) {
503 queue = sender->peer->send_queue;
505 queue = sender->vlan->send_queue;
508 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
511 ssize_t qemu_send_packet_async(VLANClientState *sender,
512 const uint8_t *buf, int size,
513 NetPacketSent *sent_cb)
515 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
519 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
521 qemu_send_packet_async(vc, buf, size, NULL);
524 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
526 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
530 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
533 uint8_t buffer[4096];
536 offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer));
538 return vc->info->receive(vc, buffer, offset);
541 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
543 const struct iovec *iov,
547 VLANClientState *vc = opaque;
550 return iov_size(iov, iovcnt);
553 if (vc->info->receive_iov) {
554 return vc->info->receive_iov(vc, iov, iovcnt);
556 return vc_sendv_compat(vc, iov, iovcnt);
560 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
562 const struct iovec *iov,
566 VLANState *vlan = opaque;
570 QTAILQ_FOREACH(vc, &vlan->clients, next) {
578 ret = iov_size(iov, iovcnt);
582 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
584 if (vc->info->receive_iov) {
585 len = vc->info->receive_iov(vc, iov, iovcnt);
587 len = vc_sendv_compat(vc, iov, iovcnt);
590 ret = (ret >= 0) ? ret : len;
596 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
597 const struct iovec *iov, int iovcnt,
598 NetPacketSent *sent_cb)
602 if (sender->link_down || (!sender->peer && !sender->vlan)) {
603 return iov_size(iov, iovcnt);
607 queue = sender->peer->send_queue;
609 queue = sender->vlan->send_queue;
612 return qemu_net_queue_send_iov(queue, sender,
613 QEMU_NET_PACKET_FLAG_NONE,
614 iov, iovcnt, sent_cb);
618 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
620 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
623 /* find or alloc a new VLAN */
624 VLANState *qemu_find_vlan(int id, int allocate)
628 QTAILQ_FOREACH(vlan, &vlans, next) {
629 if (vlan->id == id) {
638 vlan = qemu_mallocz(sizeof(VLANState));
640 QTAILQ_INIT(&vlan->clients);
642 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
643 qemu_vlan_deliver_packet_iov,
646 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
651 VLANClientState *qemu_find_netdev(const char *id)
655 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
656 if (!strcmp(vc->name, id)) {
664 static int nic_get_free_idx(void)
668 for (index = 0; index < MAX_NICS; index++)
669 if (!nd_table[index].used)
674 int qemu_show_nic_models(const char *arg, const char *const *models)
678 if (!arg || strcmp(arg, "?"))
681 fprintf(stderr, "qemu: Supported NIC models: ");
682 for (i = 0 ; models[i]; i++)
683 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
687 void qemu_check_nic_model(NICInfo *nd, const char *model)
689 const char *models[2];
694 if (qemu_show_nic_models(nd->model, models))
696 if (qemu_find_nic_model(nd, models, model) < 0)
700 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
701 const char *default_model)
706 nd->model = qemu_strdup(default_model);
708 for (i = 0 ; models[i]; i++) {
709 if (strcmp(nd->model, models[i]) == 0)
713 error_report("Unsupported NIC model: %s", nd->model);
717 int net_handle_fd_param(Monitor *mon, const char *param)
721 if (!qemu_isdigit(param[0]) && mon) {
723 fd = monitor_get_fd(mon, param);
725 error_report("No file descriptor named %s found", param);
731 fd = strtol(param, &endptr, 10);
732 if (*endptr || (fd == 0 && param == endptr)) {
740 static int net_init_nic(QemuOpts *opts,
749 idx = nic_get_free_idx();
750 if (idx == -1 || nb_nics >= MAX_NICS) {
751 error_report("Too Many NICs");
757 memset(nd, 0, sizeof(*nd));
759 if ((netdev = qemu_opt_get(opts, "netdev"))) {
760 nd->netdev = qemu_find_netdev(netdev);
762 error_report("netdev '%s' not found", netdev);
770 nd->name = qemu_strdup(name);
772 if (qemu_opt_get(opts, "model")) {
773 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
775 if (qemu_opt_get(opts, "addr")) {
776 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
779 if (qemu_opt_get(opts, "macaddr") &&
780 net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) {
781 error_report("invalid syntax for ethernet address");
784 qemu_macaddr_default_if_unset(&nd->macaddr);
786 nd->nvectors = qemu_opt_get_number(opts, "vectors",
787 DEV_NVECTORS_UNSPECIFIED);
788 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
789 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
790 error_report("invalid # of vectors: %d", nd->nvectors);
800 #define NET_COMMON_PARAMS_DESC \
803 .type = QEMU_OPT_STRING, \
804 .help = "net client type (nic, tap etc.)", \
807 .type = QEMU_OPT_NUMBER, \
808 .help = "vlan number", \
811 .type = QEMU_OPT_STRING, \
812 .help = "identifier for monitor commands", \
815 typedef int (*net_client_init_func)(QemuOpts *opts,
820 /* magic number, but compiler will warn if too small */
821 #define NET_MAX_DESC 20
823 static const struct {
825 net_client_init_func init;
826 QemuOptDesc desc[NET_MAX_DESC];
827 } net_client_types[NET_CLIENT_TYPE_MAX] = {
828 [NET_CLIENT_TYPE_NONE] = {
831 NET_COMMON_PARAMS_DESC,
832 { /* end of list */ }
835 [NET_CLIENT_TYPE_NIC] = {
837 .init = net_init_nic,
839 NET_COMMON_PARAMS_DESC,
842 .type = QEMU_OPT_STRING,
843 .help = "id of -netdev to connect to",
847 .type = QEMU_OPT_STRING,
848 .help = "MAC address",
851 .type = QEMU_OPT_STRING,
852 .help = "device model (e1000, rtl8139, virtio etc.)",
855 .type = QEMU_OPT_STRING,
856 .help = "PCI device address",
859 .type = QEMU_OPT_NUMBER,
860 .help = "number of MSI-x vectors, 0 to disable MSI-X",
862 { /* end of list */ }
866 [NET_CLIENT_TYPE_USER] = {
868 .init = net_init_slirp,
870 NET_COMMON_PARAMS_DESC,
873 .type = QEMU_OPT_STRING,
874 .help = "client hostname reported by the builtin DHCP server",
877 .type = QEMU_OPT_STRING,
878 .help = "isolate the guest from the host (y|yes|n|no)",
881 .type = QEMU_OPT_STRING,
882 .help = "legacy parameter, use net= instead",
885 .type = QEMU_OPT_STRING,
886 .help = "IP address and optional netmask",
889 .type = QEMU_OPT_STRING,
890 .help = "guest-visible address of the host",
893 .type = QEMU_OPT_STRING,
894 .help = "root directory of the built-in TFTP server",
897 .type = QEMU_OPT_STRING,
898 .help = "BOOTP filename, for use with tftp=",
901 .type = QEMU_OPT_STRING,
902 .help = "the first of the 16 IPs the built-in DHCP server can assign",
905 .type = QEMU_OPT_STRING,
906 .help = "guest-visible address of the virtual nameserver",
909 .type = QEMU_OPT_STRING,
910 .help = "root directory of the built-in SMB server",
913 .type = QEMU_OPT_STRING,
914 .help = "IP address of the built-in SMB server",
917 .type = QEMU_OPT_STRING,
918 .help = "guest port number to forward incoming TCP or UDP connections",
921 .type = QEMU_OPT_STRING,
922 .help = "IP address and port to forward guest TCP connections",
924 { /* end of list */ }
928 [NET_CLIENT_TYPE_TAP] = {
930 .init = net_init_tap,
932 NET_COMMON_PARAMS_DESC,
935 .type = QEMU_OPT_STRING,
936 .help = "interface name",
941 .type = QEMU_OPT_STRING,
942 .help = "file descriptor of an already opened tap",
945 .type = QEMU_OPT_STRING,
946 .help = "script to initialize the interface",
948 .name = "downscript",
949 .type = QEMU_OPT_STRING,
950 .help = "script to shut down the interface",
953 .type = QEMU_OPT_SIZE,
954 .help = "send buffer limit"
957 .type = QEMU_OPT_BOOL,
958 .help = "enable the IFF_VNET_HDR flag on the tap interface"
961 .type = QEMU_OPT_BOOL,
962 .help = "enable vhost-net network accelerator",
965 .type = QEMU_OPT_STRING,
966 .help = "file descriptor of an already opened vhost net device",
968 .name = "vhostforce",
969 .type = QEMU_OPT_BOOL,
970 .help = "force vhost on for non-MSIX virtio guests",
973 { /* end of list */ }
976 [NET_CLIENT_TYPE_SOCKET] = {
978 .init = net_init_socket,
980 NET_COMMON_PARAMS_DESC,
983 .type = QEMU_OPT_STRING,
984 .help = "file descriptor of an already opened socket",
987 .type = QEMU_OPT_STRING,
988 .help = "port number, and optional hostname, to listen on",
991 .type = QEMU_OPT_STRING,
992 .help = "port number, and optional hostname, to connect to",
995 .type = QEMU_OPT_STRING,
996 .help = "UDP multicast address and port number",
999 .type = QEMU_OPT_STRING,
1000 .help = "source address for multicast packets",
1002 { /* end of list */ }
1006 [NET_CLIENT_TYPE_VDE] = {
1008 .init = net_init_vde,
1010 NET_COMMON_PARAMS_DESC,
1013 .type = QEMU_OPT_STRING,
1014 .help = "socket path",
1017 .type = QEMU_OPT_NUMBER,
1018 .help = "port number",
1021 .type = QEMU_OPT_STRING,
1022 .help = "group owner of socket",
1025 .type = QEMU_OPT_NUMBER,
1026 .help = "permissions for socket",
1028 { /* end of list */ }
1032 [NET_CLIENT_TYPE_DUMP] = {
1034 .init = net_init_dump,
1036 NET_COMMON_PARAMS_DESC,
1039 .type = QEMU_OPT_SIZE,
1040 .help = "per-packet size limit (64k default)",
1043 .type = QEMU_OPT_STRING,
1044 .help = "dump file path (default is qemu-vlan0.pcap)",
1046 { /* end of list */ }
1051 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1057 type = qemu_opt_get(opts, "type");
1059 qerror_report(QERR_MISSING_PARAMETER, "type");
1064 if (strcmp(type, "tap") != 0 &&
1066 strcmp(type, "user") != 0 &&
1069 strcmp(type, "vde") != 0 &&
1071 strcmp(type, "socket") != 0) {
1072 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1073 "a netdev backend type");
1077 if (qemu_opt_get(opts, "vlan")) {
1078 qerror_report(QERR_INVALID_PARAMETER, "vlan");
1081 if (qemu_opt_get(opts, "name")) {
1082 qerror_report(QERR_INVALID_PARAMETER, "name");
1085 if (!qemu_opts_id(opts)) {
1086 qerror_report(QERR_MISSING_PARAMETER, "id");
1091 name = qemu_opts_id(opts);
1093 name = qemu_opt_get(opts, "name");
1096 for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) {
1097 if (net_client_types[i].type != NULL &&
1098 !strcmp(net_client_types[i].type, type)) {
1099 VLANState *vlan = NULL;
1102 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1106 /* Do not add to a vlan if it's a -netdev or a nic with a
1107 * netdev= parameter. */
1109 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1110 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1114 if (net_client_types[i].init) {
1115 ret = net_client_types[i].init(opts, mon, name, vlan);
1117 /* TODO push error reporting into init() methods */
1118 qerror_report(QERR_DEVICE_INIT_FAILED, type);
1126 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1127 "a network client type");
1131 static int net_host_check_device(const char *device)
1134 const char *valid_param_list[] = { "tap", "socket", "dump"
1142 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1143 if (!strncmp(valid_param_list[i], device,
1144 strlen(valid_param_list[i])))
1151 void net_host_device_add(Monitor *mon, const QDict *qdict)
1153 const char *device = qdict_get_str(qdict, "device");
1154 const char *opts_str = qdict_get_try_str(qdict, "opts");
1157 if (!net_host_check_device(device)) {
1158 monitor_printf(mon, "invalid host network device %s\n", device);
1162 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1167 qemu_opt_set(opts, "type", device);
1169 if (net_client_init(mon, opts, 0) < 0) {
1170 monitor_printf(mon, "adding host network device %s failed\n", device);
1174 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1176 VLANClientState *vc;
1177 int vlan_id = qdict_get_int(qdict, "vlan_id");
1178 const char *device = qdict_get_str(qdict, "device");
1180 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1184 if (!net_host_check_device(vc->model)) {
1185 monitor_printf(mon, "invalid host network device %s\n", device);
1188 qemu_del_vlan_client(vc);
1191 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1196 opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
1201 res = net_client_init(mon, opts, 1);
1203 qemu_opts_del(opts);
1209 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1211 const char *id = qdict_get_str(qdict, "id");
1212 VLANClientState *vc;
1214 vc = qemu_find_netdev(id);
1215 if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
1216 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1219 qemu_del_vlan_client(vc);
1220 qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
1224 static void print_net_client(Monitor *mon, VLANClientState *vc)
1226 monitor_printf(mon, "%s: type=%s,%s\n", vc->name,
1227 net_client_types[vc->info->type].type, vc->info_str);
1230 void do_info_network(Monitor *mon)
1233 VLANClientState *vc, *peer;
1234 net_client_type type;
1236 QTAILQ_FOREACH(vlan, &vlans, next) {
1237 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1239 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1240 monitor_printf(mon, " ");
1241 print_net_client(mon, vc);
1244 monitor_printf(mon, "Devices not on any VLAN:\n");
1245 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1247 type = vc->info->type;
1248 if (!peer || type == NET_CLIENT_TYPE_NIC) {
1249 monitor_printf(mon, " ");
1250 print_net_client(mon, vc);
1251 } /* else it's a netdev connected to a NIC, printed with the NIC */
1252 if (peer && type == NET_CLIENT_TYPE_NIC) {
1253 monitor_printf(mon, " \\ ");
1254 print_net_client(mon, peer);
1259 int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
1262 VLANClientState *vc = NULL;
1263 const char *name = qdict_get_str(qdict, "name");
1264 int up = qdict_get_bool(qdict, "up");
1266 QTAILQ_FOREACH(vlan, &vlans, next) {
1267 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1268 if (strcmp(vc->name, name) == 0) {
1273 vc = qemu_find_netdev(name);
1277 qerror_report(QERR_DEVICE_NOT_FOUND, name);
1281 vc->link_down = !up;
1283 if (vc->info->link_status_changed) {
1284 vc->info->link_status_changed(vc);
1287 /* Notify peer. Don't update peer link status: this makes it possible to
1288 * disconnect from host network without notifying the guest.
1289 * FIXME: is disconnected link status change operation useful?
1291 * Current behaviour is compatible with qemu vlans where there could be
1292 * multiple clients that can still communicate with each other in
1293 * disconnected mode. For now maintain this compatibility. */
1294 if (vc->peer && vc->peer->info->link_status_changed) {
1295 vc->peer->info->link_status_changed(vc->peer);
1300 void net_cleanup(void)
1303 VLANClientState *vc, *next_vc;
1305 QTAILQ_FOREACH(vlan, &vlans, next) {
1306 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1307 qemu_del_vlan_client(vc);
1311 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1312 qemu_del_vlan_client(vc);
1316 void net_check_clients(void)
1319 VLANClientState *vc;
1322 /* Don't warn about the default network setup that you get if
1323 * no command line -net or -netdev options are specified. There
1324 * are two cases that we would otherwise complain about:
1325 * (1) board doesn't support a NIC but the implicit "-net nic"
1327 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1328 * sets up a nic that isn't connected to anything.
1334 QTAILQ_FOREACH(vlan, &vlans, next) {
1335 int has_nic = 0, has_host_dev = 0;
1337 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1338 switch (vc->info->type) {
1339 case NET_CLIENT_TYPE_NIC:
1342 case NET_CLIENT_TYPE_USER:
1343 case NET_CLIENT_TYPE_TAP:
1344 case NET_CLIENT_TYPE_SOCKET:
1345 case NET_CLIENT_TYPE_VDE:
1351 if (has_host_dev && !has_nic)
1352 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1353 if (has_nic && !has_host_dev)
1355 "Warning: vlan %d is not connected to host network\n",
1358 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1360 fprintf(stderr, "Warning: %s %s has no peer\n",
1361 vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1366 /* Check that all NICs requested via -net nic actually got created.
1367 * NICs created via -device don't need to be checked here because
1368 * they are always instantiated.
1370 for (i = 0; i < MAX_NICS; i++) {
1371 NICInfo *nd = &nd_table[i];
1372 if (nd->used && !nd->instantiated) {
1373 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1374 "was not created (not supported by this machine?)\n",
1375 nd->name ? nd->name : "anonymous",
1376 nd->model ? nd->model : "unspecified");
1381 static int net_init_client(QemuOpts *opts, void *dummy)
1383 if (net_client_init(NULL, opts, 0) < 0)
1388 static int net_init_netdev(QemuOpts *opts, void *dummy)
1390 return net_client_init(NULL, opts, 1);
1393 int net_init_clients(void)
1395 QemuOptsList *net = qemu_find_opts("net");
1398 /* if no clients, we use a default config */
1399 qemu_opts_set(net, NULL, "type", "nic");
1401 qemu_opts_set(net, NULL, "type", "user");
1405 QTAILQ_INIT(&vlans);
1406 QTAILQ_INIT(&non_vlan_clients);
1408 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1411 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1418 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1420 #if defined(CONFIG_SLIRP)
1422 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1427 if (!qemu_opts_parse(opts_list, optarg, 1)) {