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"
37 #include "qmp-commands.h"
41 static QTAILQ_HEAD(, VLANState) vlans;
42 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
46 /***********************************************************/
47 /* network device redirectors */
49 #if defined(DEBUG_NET)
50 static void hex_dump(FILE *f, const uint8_t *buf, int size)
54 for(i=0;i<size;i+=16) {
58 fprintf(f, "%08x ", i);
61 fprintf(f, " %02x", buf[i+j]);
68 if (c < ' ' || c > '~')
77 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
88 if (len > buf_size - 1)
97 int parse_host_port(struct sockaddr_in *saddr, const char *str)
105 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
107 saddr->sin_family = AF_INET;
108 if (buf[0] == '\0') {
109 saddr->sin_addr.s_addr = 0;
111 if (qemu_isdigit(buf[0])) {
112 if (!inet_aton(buf, &saddr->sin_addr))
115 if ((he = gethostbyname(buf)) == NULL)
117 saddr->sin_addr = *(struct in_addr *)he->h_addr;
120 port = strtol(p, (char **)&r, 0);
123 saddr->sin_port = htons(port);
127 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
129 snprintf(vc->info_str, sizeof(vc->info_str),
130 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
132 macaddr[0], macaddr[1], macaddr[2],
133 macaddr[3], macaddr[4], macaddr[5]);
136 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
138 static int index = 0;
139 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
141 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
143 macaddr->a[0] = 0x52;
144 macaddr->a[1] = 0x54;
145 macaddr->a[2] = 0x00;
146 macaddr->a[3] = 0x12;
147 macaddr->a[4] = 0x34;
148 macaddr->a[5] = 0x56 + index++;
151 static char *assign_name(VLANClientState *vc1, const char *model)
158 QTAILQ_FOREACH(vlan, &vlans, next) {
159 QTAILQ_FOREACH(vc, &vlan->clients, next) {
160 if (vc != vc1 && strcmp(vc->model, model) == 0) {
166 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
167 if (vc != vc1 && strcmp(vc->model, model) == 0) {
172 snprintf(buf, sizeof(buf), "%s.%d", model, id);
174 return g_strdup(buf);
177 static ssize_t qemu_deliver_packet(VLANClientState *sender,
182 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
184 const struct iovec *iov,
188 VLANClientState *qemu_new_net_client(NetClientInfo *info,
190 VLANClientState *peer,
196 assert(info->size >= sizeof(VLANClientState));
198 vc = g_malloc0(info->size);
201 vc->model = g_strdup(model);
203 vc->name = g_strdup(name);
205 vc->name = assign_name(vc, model);
211 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
218 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
220 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
221 qemu_deliver_packet_iov,
228 NICState *qemu_new_nic(NetClientInfo *info,
237 assert(info->type == NET_CLIENT_TYPE_NIC);
238 assert(info->size >= sizeof(NICState));
240 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
242 nic = DO_UPCAST(NICState, nc, nc);
244 nic->opaque = opaque;
249 static void qemu_cleanup_vlan_client(VLANClientState *vc)
252 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
254 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
257 if (vc->info->cleanup) {
258 vc->info->cleanup(vc);
262 static void qemu_free_vlan_client(VLANClientState *vc)
265 if (vc->send_queue) {
266 qemu_del_net_queue(vc->send_queue);
269 vc->peer->peer = NULL;
277 void qemu_del_vlan_client(VLANClientState *vc)
279 /* If there is a peer NIC, delete and cleanup client, but do not free. */
280 if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
281 NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
282 if (nic->peer_deleted) {
285 nic->peer_deleted = true;
286 /* Let NIC know peer is gone. */
287 vc->peer->link_down = true;
288 if (vc->peer->info->link_status_changed) {
289 vc->peer->info->link_status_changed(vc->peer);
291 qemu_cleanup_vlan_client(vc);
295 /* If this is a peer NIC and peer has already been deleted, free it now. */
296 if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
297 NICState *nic = DO_UPCAST(NICState, nc, vc);
298 if (nic->peer_deleted) {
299 qemu_free_vlan_client(vc->peer);
303 qemu_cleanup_vlan_client(vc);
304 qemu_free_vlan_client(vc);
308 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
309 const char *client_str)
314 vlan = qemu_find_vlan(vlan_id, 0);
316 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
320 QTAILQ_FOREACH(vc, &vlan->clients, next) {
321 if (!strcmp(vc->name, client_str)) {
326 monitor_printf(mon, "can't find device %s on VLAN %d\n",
327 client_str, vlan_id);
333 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
338 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
339 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
340 func(DO_UPCAST(NICState, nc, nc), opaque);
344 QTAILQ_FOREACH(vlan, &vlans, next) {
345 QTAILQ_FOREACH(nc, &vlan->clients, next) {
346 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
347 func(DO_UPCAST(NICState, nc, nc), opaque);
353 int qemu_can_send_packet(VLANClientState *sender)
355 VLANState *vlan = sender->vlan;
359 if (sender->peer->receive_disabled) {
361 } else if (sender->peer->info->can_receive &&
362 !sender->peer->info->can_receive(sender->peer)) {
373 QTAILQ_FOREACH(vc, &vlan->clients, next) {
378 /* no can_receive() handler, they can always receive */
379 if (vc->info->can_receive && !vc->info->can_receive(vc)) {
386 static ssize_t qemu_deliver_packet(VLANClientState *sender,
392 VLANClientState *vc = opaque;
399 if (vc->receive_disabled) {
403 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
404 ret = vc->info->receive_raw(vc, data, size);
406 ret = vc->info->receive(vc, data, size);
410 vc->receive_disabled = 1;
416 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
422 VLANState *vlan = opaque;
426 QTAILQ_FOREACH(vc, &vlan->clients, next) {
438 if (vc->receive_disabled) {
443 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
444 len = vc->info->receive_raw(vc, buf, size);
446 len = vc->info->receive(vc, buf, size);
450 vc->receive_disabled = 1;
453 ret = (ret >= 0) ? ret : len;
460 void qemu_purge_queued_packets(VLANClientState *vc)
464 if (!vc->peer && !vc->vlan) {
469 queue = vc->peer->send_queue;
471 queue = vc->vlan->send_queue;
474 qemu_net_queue_purge(queue, vc);
477 void qemu_flush_queued_packets(VLANClientState *vc)
481 vc->receive_disabled = 0;
484 queue = vc->vlan->send_queue;
486 queue = vc->send_queue;
489 qemu_net_queue_flush(queue);
492 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
494 const uint8_t *buf, int size,
495 NetPacketSent *sent_cb)
500 printf("qemu_send_packet_async:\n");
501 hex_dump(stdout, buf, size);
504 if (sender->link_down || (!sender->peer && !sender->vlan)) {
509 queue = sender->peer->send_queue;
511 queue = sender->vlan->send_queue;
514 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
517 ssize_t qemu_send_packet_async(VLANClientState *sender,
518 const uint8_t *buf, int size,
519 NetPacketSent *sent_cb)
521 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
525 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
527 qemu_send_packet_async(vc, buf, size, NULL);
530 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
532 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
536 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
539 uint8_t buffer[4096];
542 offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer));
544 return vc->info->receive(vc, buffer, offset);
547 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
549 const struct iovec *iov,
553 VLANClientState *vc = opaque;
556 return iov_size(iov, iovcnt);
559 if (vc->info->receive_iov) {
560 return vc->info->receive_iov(vc, iov, iovcnt);
562 return vc_sendv_compat(vc, iov, iovcnt);
566 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
568 const struct iovec *iov,
572 VLANState *vlan = opaque;
576 QTAILQ_FOREACH(vc, &vlan->clients, next) {
584 ret = iov_size(iov, iovcnt);
588 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
590 if (vc->info->receive_iov) {
591 len = vc->info->receive_iov(vc, iov, iovcnt);
593 len = vc_sendv_compat(vc, iov, iovcnt);
596 ret = (ret >= 0) ? ret : len;
602 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
603 const struct iovec *iov, int iovcnt,
604 NetPacketSent *sent_cb)
608 if (sender->link_down || (!sender->peer && !sender->vlan)) {
609 return iov_size(iov, iovcnt);
613 queue = sender->peer->send_queue;
615 queue = sender->vlan->send_queue;
618 return qemu_net_queue_send_iov(queue, sender,
619 QEMU_NET_PACKET_FLAG_NONE,
620 iov, iovcnt, sent_cb);
624 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
626 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
629 /* find or alloc a new VLAN */
630 VLANState *qemu_find_vlan(int id, int allocate)
634 QTAILQ_FOREACH(vlan, &vlans, next) {
635 if (vlan->id == id) {
644 vlan = g_malloc0(sizeof(VLANState));
646 QTAILQ_INIT(&vlan->clients);
648 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
649 qemu_vlan_deliver_packet_iov,
652 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
657 VLANClientState *qemu_find_netdev(const char *id)
661 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
662 if (vc->info->type == NET_CLIENT_TYPE_NIC)
664 if (!strcmp(vc->name, id)) {
672 static int nic_get_free_idx(void)
676 for (index = 0; index < MAX_NICS; index++)
677 if (!nd_table[index].used)
682 int qemu_show_nic_models(const char *arg, const char *const *models)
686 if (!arg || strcmp(arg, "?"))
689 fprintf(stderr, "qemu: Supported NIC models: ");
690 for (i = 0 ; models[i]; i++)
691 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
695 void qemu_check_nic_model(NICInfo *nd, const char *model)
697 const char *models[2];
702 if (qemu_show_nic_models(nd->model, models))
704 if (qemu_find_nic_model(nd, models, model) < 0)
708 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
709 const char *default_model)
714 nd->model = g_strdup(default_model);
716 for (i = 0 ; models[i]; i++) {
717 if (strcmp(nd->model, models[i]) == 0)
721 error_report("Unsupported NIC model: %s", nd->model);
725 int net_handle_fd_param(Monitor *mon, const char *param)
729 if (!qemu_isdigit(param[0]) && mon) {
731 fd = monitor_get_fd(mon, param);
733 error_report("No file descriptor named %s found", param);
737 fd = qemu_parse_fd(param);
743 static int net_init_nic(QemuOpts *opts,
752 idx = nic_get_free_idx();
753 if (idx == -1 || nb_nics >= MAX_NICS) {
754 error_report("Too Many NICs");
760 memset(nd, 0, sizeof(*nd));
762 if ((netdev = qemu_opt_get(opts, "netdev"))) {
763 nd->netdev = qemu_find_netdev(netdev);
765 error_report("netdev '%s' not found", netdev);
773 nd->name = g_strdup(name);
775 if (qemu_opt_get(opts, "model")) {
776 nd->model = g_strdup(qemu_opt_get(opts, "model"));
778 if (qemu_opt_get(opts, "addr")) {
779 nd->devaddr = g_strdup(qemu_opt_get(opts, "addr"));
782 if (qemu_opt_get(opts, "macaddr") &&
783 net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) {
784 error_report("invalid syntax for ethernet address");
787 qemu_macaddr_default_if_unset(&nd->macaddr);
789 nd->nvectors = qemu_opt_get_number(opts, "vectors",
790 DEV_NVECTORS_UNSPECIFIED);
791 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
792 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
793 error_report("invalid # of vectors: %d", nd->nvectors);
803 #define NET_COMMON_PARAMS_DESC \
806 .type = QEMU_OPT_STRING, \
807 .help = "net client type (nic, tap etc.)", \
810 .type = QEMU_OPT_NUMBER, \
811 .help = "vlan number", \
814 .type = QEMU_OPT_STRING, \
815 .help = "identifier for monitor commands", \
818 typedef int (*net_client_init_func)(QemuOpts *opts,
823 /* magic number, but compiler will warn if too small */
824 #define NET_MAX_DESC 20
826 static const struct {
828 net_client_init_func init;
829 QemuOptDesc desc[NET_MAX_DESC];
830 } net_client_types[NET_CLIENT_TYPE_MAX] = {
831 [NET_CLIENT_TYPE_NONE] = {
834 NET_COMMON_PARAMS_DESC,
835 { /* end of list */ }
838 [NET_CLIENT_TYPE_NIC] = {
840 .init = net_init_nic,
842 NET_COMMON_PARAMS_DESC,
845 .type = QEMU_OPT_STRING,
846 .help = "id of -netdev to connect to",
850 .type = QEMU_OPT_STRING,
851 .help = "MAC address",
854 .type = QEMU_OPT_STRING,
855 .help = "device model (e1000, rtl8139, virtio etc.)",
858 .type = QEMU_OPT_STRING,
859 .help = "PCI device address",
862 .type = QEMU_OPT_NUMBER,
863 .help = "number of MSI-x vectors, 0 to disable MSI-X",
865 { /* end of list */ }
869 [NET_CLIENT_TYPE_USER] = {
871 .init = net_init_slirp,
873 NET_COMMON_PARAMS_DESC,
876 .type = QEMU_OPT_STRING,
877 .help = "client hostname reported by the builtin DHCP server",
880 .type = QEMU_OPT_STRING,
881 .help = "isolate the guest from the host (y|yes|n|no)",
884 .type = QEMU_OPT_STRING,
885 .help = "legacy parameter, use net= instead",
888 .type = QEMU_OPT_STRING,
889 .help = "IP address and optional netmask",
892 .type = QEMU_OPT_STRING,
893 .help = "guest-visible address of the host",
896 .type = QEMU_OPT_STRING,
897 .help = "root directory of the built-in TFTP server",
900 .type = QEMU_OPT_STRING,
901 .help = "BOOTP filename, for use with tftp=",
904 .type = QEMU_OPT_STRING,
905 .help = "the first of the 16 IPs the built-in DHCP server can assign",
908 .type = QEMU_OPT_STRING,
909 .help = "guest-visible address of the virtual nameserver",
912 .type = QEMU_OPT_STRING,
913 .help = "root directory of the built-in SMB server",
916 .type = QEMU_OPT_STRING,
917 .help = "IP address of the built-in SMB server",
920 .type = QEMU_OPT_STRING,
921 .help = "guest port number to forward incoming TCP or UDP connections",
924 .type = QEMU_OPT_STRING,
925 .help = "IP address and port to forward guest TCP connections",
927 { /* end of list */ }
931 [NET_CLIENT_TYPE_TAP] = {
933 .init = net_init_tap,
935 NET_COMMON_PARAMS_DESC,
938 .type = QEMU_OPT_STRING,
939 .help = "interface name",
944 .type = QEMU_OPT_STRING,
945 .help = "file descriptor of an already opened tap",
948 .type = QEMU_OPT_STRING,
949 .help = "script to initialize the interface",
951 .name = "downscript",
952 .type = QEMU_OPT_STRING,
953 .help = "script to shut down the interface",
956 .type = QEMU_OPT_SIZE,
957 .help = "send buffer limit"
960 .type = QEMU_OPT_BOOL,
961 .help = "enable the IFF_VNET_HDR flag on the tap interface"
964 .type = QEMU_OPT_BOOL,
965 .help = "enable vhost-net network accelerator",
968 .type = QEMU_OPT_STRING,
969 .help = "file descriptor of an already opened vhost net device",
971 .name = "vhostforce",
972 .type = QEMU_OPT_BOOL,
973 .help = "force vhost on for non-MSIX virtio guests",
976 { /* end of list */ }
979 [NET_CLIENT_TYPE_SOCKET] = {
981 .init = net_init_socket,
983 NET_COMMON_PARAMS_DESC,
986 .type = QEMU_OPT_STRING,
987 .help = "file descriptor of an already opened socket",
990 .type = QEMU_OPT_STRING,
991 .help = "port number, and optional hostname, to listen on",
994 .type = QEMU_OPT_STRING,
995 .help = "port number, and optional hostname, to connect to",
998 .type = QEMU_OPT_STRING,
999 .help = "UDP multicast address and port number",
1001 .name = "localaddr",
1002 .type = QEMU_OPT_STRING,
1003 .help = "source address for multicast packets",
1005 { /* end of list */ }
1009 [NET_CLIENT_TYPE_VDE] = {
1011 .init = net_init_vde,
1013 NET_COMMON_PARAMS_DESC,
1016 .type = QEMU_OPT_STRING,
1017 .help = "socket path",
1020 .type = QEMU_OPT_NUMBER,
1021 .help = "port number",
1024 .type = QEMU_OPT_STRING,
1025 .help = "group owner of socket",
1028 .type = QEMU_OPT_NUMBER,
1029 .help = "permissions for socket",
1031 { /* end of list */ }
1035 [NET_CLIENT_TYPE_DUMP] = {
1037 .init = net_init_dump,
1039 NET_COMMON_PARAMS_DESC,
1042 .type = QEMU_OPT_SIZE,
1043 .help = "per-packet size limit (64k default)",
1046 .type = QEMU_OPT_STRING,
1047 .help = "dump file path (default is qemu-vlan0.pcap)",
1049 { /* end of list */ }
1054 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1060 type = qemu_opt_get(opts, "type");
1062 qerror_report(QERR_MISSING_PARAMETER, "type");
1067 if (strcmp(type, "tap") != 0 &&
1069 strcmp(type, "user") != 0 &&
1072 strcmp(type, "vde") != 0 &&
1074 strcmp(type, "socket") != 0) {
1075 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1076 "a netdev backend type");
1080 if (qemu_opt_get(opts, "vlan")) {
1081 qerror_report(QERR_INVALID_PARAMETER, "vlan");
1084 if (qemu_opt_get(opts, "name")) {
1085 qerror_report(QERR_INVALID_PARAMETER, "name");
1088 if (!qemu_opts_id(opts)) {
1089 qerror_report(QERR_MISSING_PARAMETER, "id");
1094 name = qemu_opts_id(opts);
1096 name = qemu_opt_get(opts, "name");
1099 for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) {
1100 if (net_client_types[i].type != NULL &&
1101 !strcmp(net_client_types[i].type, type)) {
1102 VLANState *vlan = NULL;
1105 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1109 /* Do not add to a vlan if it's a -netdev or a nic with a
1110 * netdev= parameter. */
1112 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1113 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1117 if (net_client_types[i].init) {
1118 ret = net_client_types[i].init(opts, mon, name, vlan);
1120 /* TODO push error reporting into init() methods */
1121 qerror_report(QERR_DEVICE_INIT_FAILED, type);
1129 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1130 "a network client type");
1134 static int net_host_check_device(const char *device)
1137 const char *valid_param_list[] = { "tap", "socket", "dump"
1145 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1146 if (!strncmp(valid_param_list[i], device,
1147 strlen(valid_param_list[i])))
1154 void net_host_device_add(Monitor *mon, const QDict *qdict)
1156 const char *device = qdict_get_str(qdict, "device");
1157 const char *opts_str = qdict_get_try_str(qdict, "opts");
1160 if (!net_host_check_device(device)) {
1161 monitor_printf(mon, "invalid host network device %s\n", device);
1165 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1170 qemu_opt_set(opts, "type", device);
1172 if (net_client_init(mon, opts, 0) < 0) {
1173 monitor_printf(mon, "adding host network device %s failed\n", device);
1177 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1179 VLANClientState *vc;
1180 int vlan_id = qdict_get_int(qdict, "vlan_id");
1181 const char *device = qdict_get_str(qdict, "device");
1183 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1187 if (!net_host_check_device(vc->model)) {
1188 monitor_printf(mon, "invalid host network device %s\n", device);
1191 qemu_del_vlan_client(vc);
1194 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1199 opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
1204 res = net_client_init(mon, opts, 1);
1206 qemu_opts_del(opts);
1212 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1214 const char *id = qdict_get_str(qdict, "id");
1215 VLANClientState *vc;
1217 vc = qemu_find_netdev(id);
1219 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1222 qemu_del_vlan_client(vc);
1223 qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
1227 static void print_net_client(Monitor *mon, VLANClientState *vc)
1229 monitor_printf(mon, "%s: type=%s,%s\n", vc->name,
1230 net_client_types[vc->info->type].type, vc->info_str);
1233 void do_info_network(Monitor *mon)
1236 VLANClientState *vc, *peer;
1237 net_client_type type;
1239 QTAILQ_FOREACH(vlan, &vlans, next) {
1240 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1242 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1243 monitor_printf(mon, " ");
1244 print_net_client(mon, vc);
1247 monitor_printf(mon, "Devices not on any VLAN:\n");
1248 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1250 type = vc->info->type;
1251 if (!peer || type == NET_CLIENT_TYPE_NIC) {
1252 monitor_printf(mon, " ");
1253 print_net_client(mon, vc);
1254 } /* else it's a netdev connected to a NIC, printed with the NIC */
1255 if (peer && type == NET_CLIENT_TYPE_NIC) {
1256 monitor_printf(mon, " \\ ");
1257 print_net_client(mon, peer);
1262 void qmp_set_link(const char *name, bool up, Error **errp)
1265 VLANClientState *vc = NULL;
1267 QTAILQ_FOREACH(vlan, &vlans, next) {
1268 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1269 if (strcmp(vc->name, name) == 0) {
1274 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1275 if (!strcmp(vc->name, name)) {
1282 error_set(errp, QERR_DEVICE_NOT_FOUND, name);
1286 vc->link_down = !up;
1288 if (vc->info->link_status_changed) {
1289 vc->info->link_status_changed(vc);
1292 /* Notify peer. Don't update peer link status: this makes it possible to
1293 * disconnect from host network without notifying the guest.
1294 * FIXME: is disconnected link status change operation useful?
1296 * Current behaviour is compatible with qemu vlans where there could be
1297 * multiple clients that can still communicate with each other in
1298 * disconnected mode. For now maintain this compatibility. */
1299 if (vc->peer && vc->peer->info->link_status_changed) {
1300 vc->peer->info->link_status_changed(vc->peer);
1304 void net_cleanup(void)
1307 VLANClientState *vc, *next_vc;
1309 QTAILQ_FOREACH(vlan, &vlans, next) {
1310 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1311 qemu_del_vlan_client(vc);
1315 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1316 qemu_del_vlan_client(vc);
1320 void net_check_clients(void)
1323 VLANClientState *vc;
1326 /* Don't warn about the default network setup that you get if
1327 * no command line -net or -netdev options are specified. There
1328 * are two cases that we would otherwise complain about:
1329 * (1) board doesn't support a NIC but the implicit "-net nic"
1331 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1332 * sets up a nic that isn't connected to anything.
1338 QTAILQ_FOREACH(vlan, &vlans, next) {
1339 int has_nic = 0, has_host_dev = 0;
1341 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1342 switch (vc->info->type) {
1343 case NET_CLIENT_TYPE_NIC:
1346 case NET_CLIENT_TYPE_USER:
1347 case NET_CLIENT_TYPE_TAP:
1348 case NET_CLIENT_TYPE_SOCKET:
1349 case NET_CLIENT_TYPE_VDE:
1355 if (has_host_dev && !has_nic)
1356 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1357 if (has_nic && !has_host_dev)
1359 "Warning: vlan %d is not connected to host network\n",
1362 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1364 fprintf(stderr, "Warning: %s %s has no peer\n",
1365 vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1370 /* Check that all NICs requested via -net nic actually got created.
1371 * NICs created via -device don't need to be checked here because
1372 * they are always instantiated.
1374 for (i = 0; i < MAX_NICS; i++) {
1375 NICInfo *nd = &nd_table[i];
1376 if (nd->used && !nd->instantiated) {
1377 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1378 "was not created (not supported by this machine?)\n",
1379 nd->name ? nd->name : "anonymous",
1380 nd->model ? nd->model : "unspecified");
1385 static int net_init_client(QemuOpts *opts, void *dummy)
1387 if (net_client_init(NULL, opts, 0) < 0)
1392 static int net_init_netdev(QemuOpts *opts, void *dummy)
1394 return net_client_init(NULL, opts, 1);
1397 int net_init_clients(void)
1399 QemuOptsList *net = qemu_find_opts("net");
1402 /* if no clients, we use a default config */
1403 qemu_opts_set(net, NULL, "type", "nic");
1405 qemu_opts_set(net, NULL, "type", "user");
1409 QTAILQ_INIT(&vlans);
1410 QTAILQ_INIT(&non_vlan_clients);
1412 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1415 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1422 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1424 #if defined(CONFIG_SLIRP)
1426 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1431 if (!qemu_opts_parse(opts_list, optarg, 1)) {