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"
36 #include "qemu-common.h"
37 #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_src_port(struct sockaddr_in *haddr,
97 struct sockaddr_in *saddr,
98 const char *input_str)
100 char *str = qemu_strdup(input_str);
101 char *host_str = str;
103 const char *src_str2;
107 * Chop off any extra arguments at the end of the string which
108 * would start with a comma, then fill in the src port information
109 * if it was provided else use the "any address" and "any port".
111 if ((ptr = strchr(str,',')))
114 if ((src_str = strchr(input_str,'@'))) {
119 if (parse_host_port(haddr, host_str) < 0)
123 if (!src_str || *src_str == '\0')
126 if (parse_host_port(saddr, src_str2) < 0)
137 int parse_host_port(struct sockaddr_in *saddr, const char *str)
145 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
147 saddr->sin_family = AF_INET;
148 if (buf[0] == '\0') {
149 saddr->sin_addr.s_addr = 0;
151 if (qemu_isdigit(buf[0])) {
152 if (!inet_aton(buf, &saddr->sin_addr))
155 if ((he = gethostbyname(buf)) == NULL)
157 saddr->sin_addr = *(struct in_addr *)he->h_addr;
160 port = strtol(p, (char **)&r, 0);
163 saddr->sin_port = htons(port);
167 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
169 snprintf(vc->info_str, sizeof(vc->info_str),
170 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
172 macaddr[0], macaddr[1], macaddr[2],
173 macaddr[3], macaddr[4], macaddr[5]);
176 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
178 static int index = 0;
179 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
181 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
183 macaddr->a[0] = 0x52;
184 macaddr->a[1] = 0x54;
185 macaddr->a[2] = 0x00;
186 macaddr->a[3] = 0x12;
187 macaddr->a[4] = 0x34;
188 macaddr->a[5] = 0x56 + index++;
191 static char *assign_name(VLANClientState *vc1, const char *model)
197 QTAILQ_FOREACH(vlan, &vlans, next) {
200 QTAILQ_FOREACH(vc, &vlan->clients, next) {
201 if (vc != vc1 && strcmp(vc->model, model) == 0) {
207 snprintf(buf, sizeof(buf), "%s.%d", model, id);
209 return qemu_strdup(buf);
212 static ssize_t qemu_deliver_packet(VLANClientState *sender,
217 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
219 const struct iovec *iov,
223 VLANClientState *qemu_new_net_client(NetClientInfo *info,
225 VLANClientState *peer,
231 assert(info->size >= sizeof(VLANClientState));
233 vc = qemu_mallocz(info->size);
236 vc->model = qemu_strdup(model);
238 vc->name = qemu_strdup(name);
240 vc->name = assign_name(vc, model);
246 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
253 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
255 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
256 qemu_deliver_packet_iov,
263 NICState *qemu_new_nic(NetClientInfo *info,
272 assert(info->type == NET_CLIENT_TYPE_NIC);
273 assert(info->size >= sizeof(NICState));
275 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
277 nic = DO_UPCAST(NICState, nc, nc);
279 nic->opaque = opaque;
284 static void qemu_cleanup_vlan_client(VLANClientState *vc)
287 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
289 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
292 if (vc->info->cleanup) {
293 vc->info->cleanup(vc);
297 static void qemu_free_vlan_client(VLANClientState *vc)
300 if (vc->send_queue) {
301 qemu_del_net_queue(vc->send_queue);
304 vc->peer->peer = NULL;
308 qemu_free(vc->model);
312 void qemu_del_vlan_client(VLANClientState *vc)
314 /* If there is a peer NIC, delete and cleanup client, but do not free. */
315 if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
316 NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
317 if (nic->peer_deleted) {
320 nic->peer_deleted = true;
321 /* Let NIC know peer is gone. */
322 vc->peer->link_down = true;
323 if (vc->peer->info->link_status_changed) {
324 vc->peer->info->link_status_changed(vc->peer);
326 qemu_cleanup_vlan_client(vc);
330 /* If this is a peer NIC and peer has already been deleted, free it now. */
331 if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
332 NICState *nic = DO_UPCAST(NICState, nc, vc);
333 if (nic->peer_deleted) {
334 qemu_free_vlan_client(vc->peer);
338 qemu_cleanup_vlan_client(vc);
339 qemu_free_vlan_client(vc);
343 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
344 const char *client_str)
349 vlan = qemu_find_vlan(vlan_id, 0);
351 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
355 QTAILQ_FOREACH(vc, &vlan->clients, next) {
356 if (!strcmp(vc->name, client_str)) {
361 monitor_printf(mon, "can't find device %s on VLAN %d\n",
362 client_str, vlan_id);
368 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
373 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
374 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
375 func(DO_UPCAST(NICState, nc, nc), opaque);
379 QTAILQ_FOREACH(vlan, &vlans, next) {
380 QTAILQ_FOREACH(nc, &vlan->clients, next) {
381 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
382 func(DO_UPCAST(NICState, nc, nc), opaque);
388 int qemu_can_send_packet(VLANClientState *sender)
390 VLANState *vlan = sender->vlan;
394 if (sender->peer->receive_disabled) {
396 } else if (sender->peer->info->can_receive &&
397 !sender->peer->info->can_receive(sender->peer)) {
408 QTAILQ_FOREACH(vc, &vlan->clients, next) {
413 /* no can_receive() handler, they can always receive */
414 if (vc->info->can_receive && !vc->info->can_receive(vc)) {
421 static ssize_t qemu_deliver_packet(VLANClientState *sender,
427 VLANClientState *vc = opaque;
434 if (vc->receive_disabled) {
438 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
439 ret = vc->info->receive_raw(vc, data, size);
441 ret = vc->info->receive(vc, data, size);
445 vc->receive_disabled = 1;
451 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
457 VLANState *vlan = opaque;
461 QTAILQ_FOREACH(vc, &vlan->clients, next) {
473 if (vc->receive_disabled) {
478 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
479 len = vc->info->receive_raw(vc, buf, size);
481 len = vc->info->receive(vc, buf, size);
485 vc->receive_disabled = 1;
488 ret = (ret >= 0) ? ret : len;
495 void qemu_purge_queued_packets(VLANClientState *vc)
499 if (!vc->peer && !vc->vlan) {
504 queue = vc->peer->send_queue;
506 queue = vc->vlan->send_queue;
509 qemu_net_queue_purge(queue, vc);
512 void qemu_flush_queued_packets(VLANClientState *vc)
516 vc->receive_disabled = 0;
519 queue = vc->vlan->send_queue;
521 queue = vc->send_queue;
524 qemu_net_queue_flush(queue);
527 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
529 const uint8_t *buf, int size,
530 NetPacketSent *sent_cb)
535 printf("qemu_send_packet_async:\n");
536 hex_dump(stdout, buf, size);
539 if (sender->link_down || (!sender->peer && !sender->vlan)) {
544 queue = sender->peer->send_queue;
546 queue = sender->vlan->send_queue;
549 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
552 ssize_t qemu_send_packet_async(VLANClientState *sender,
553 const uint8_t *buf, int size,
554 NetPacketSent *sent_cb)
556 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
560 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
562 qemu_send_packet_async(vc, buf, size, NULL);
565 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
567 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
571 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
574 uint8_t buffer[4096];
578 for (i = 0; i < iovcnt; i++) {
581 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
582 memcpy(buffer + offset, iov[i].iov_base, len);
586 return vc->info->receive(vc, buffer, offset);
589 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
594 for (i = 0; i < iovcnt; i++)
595 offset += iov[i].iov_len;
599 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
601 const struct iovec *iov,
605 VLANClientState *vc = opaque;
608 return calc_iov_length(iov, iovcnt);
611 if (vc->info->receive_iov) {
612 return vc->info->receive_iov(vc, iov, iovcnt);
614 return vc_sendv_compat(vc, iov, iovcnt);
618 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
620 const struct iovec *iov,
624 VLANState *vlan = opaque;
628 QTAILQ_FOREACH(vc, &vlan->clients, next) {
636 ret = calc_iov_length(iov, iovcnt);
640 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
642 if (vc->info->receive_iov) {
643 len = vc->info->receive_iov(vc, iov, iovcnt);
645 len = vc_sendv_compat(vc, iov, iovcnt);
648 ret = (ret >= 0) ? ret : len;
654 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
655 const struct iovec *iov, int iovcnt,
656 NetPacketSent *sent_cb)
660 if (sender->link_down || (!sender->peer && !sender->vlan)) {
661 return calc_iov_length(iov, iovcnt);
665 queue = sender->peer->send_queue;
667 queue = sender->vlan->send_queue;
670 return qemu_net_queue_send_iov(queue, sender,
671 QEMU_NET_PACKET_FLAG_NONE,
672 iov, iovcnt, sent_cb);
676 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
678 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
681 /* find or alloc a new VLAN */
682 VLANState *qemu_find_vlan(int id, int allocate)
686 QTAILQ_FOREACH(vlan, &vlans, next) {
687 if (vlan->id == id) {
696 vlan = qemu_mallocz(sizeof(VLANState));
698 QTAILQ_INIT(&vlan->clients);
700 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
701 qemu_vlan_deliver_packet_iov,
704 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
709 VLANClientState *qemu_find_netdev(const char *id)
713 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
714 if (!strcmp(vc->name, id)) {
722 static int nic_get_free_idx(void)
726 for (index = 0; index < MAX_NICS; index++)
727 if (!nd_table[index].used)
732 int qemu_show_nic_models(const char *arg, const char *const *models)
736 if (!arg || strcmp(arg, "?"))
739 fprintf(stderr, "qemu: Supported NIC models: ");
740 for (i = 0 ; models[i]; i++)
741 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
745 void qemu_check_nic_model(NICInfo *nd, const char *model)
747 const char *models[2];
752 if (qemu_show_nic_models(nd->model, models))
754 if (qemu_find_nic_model(nd, models, model) < 0)
758 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
759 const char *default_model)
764 nd->model = qemu_strdup(default_model);
766 for (i = 0 ; models[i]; i++) {
767 if (strcmp(nd->model, models[i]) == 0)
771 error_report("qemu: Unsupported NIC model: %s", nd->model);
775 int net_handle_fd_param(Monitor *mon, const char *param)
779 if (!qemu_isdigit(param[0]) && mon) {
781 fd = monitor_get_fd(mon, param);
783 error_report("No file descriptor named %s found", param);
789 fd = strtol(param, &endptr, 10);
790 if (*endptr || (fd == 0 && param == endptr)) {
798 static int net_init_nic(QemuOpts *opts,
807 idx = nic_get_free_idx();
808 if (idx == -1 || nb_nics >= MAX_NICS) {
809 error_report("Too Many NICs");
815 memset(nd, 0, sizeof(*nd));
817 if ((netdev = qemu_opt_get(opts, "netdev"))) {
818 nd->netdev = qemu_find_netdev(netdev);
820 error_report("netdev '%s' not found", netdev);
828 nd->name = qemu_strdup(name);
830 if (qemu_opt_get(opts, "model")) {
831 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
833 if (qemu_opt_get(opts, "addr")) {
834 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
837 nd->macaddr[0] = 0x52;
838 nd->macaddr[1] = 0x54;
839 nd->macaddr[2] = 0x00;
840 nd->macaddr[3] = 0x12;
841 nd->macaddr[4] = 0x34;
842 nd->macaddr[5] = 0x56 + idx;
844 if (qemu_opt_get(opts, "macaddr") &&
845 net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
846 error_report("invalid syntax for ethernet address");
850 nd->nvectors = qemu_opt_get_number(opts, "vectors",
851 DEV_NVECTORS_UNSPECIFIED);
852 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
853 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
854 error_report("invalid # of vectors: %d", nd->nvectors);
864 #define NET_COMMON_PARAMS_DESC \
867 .type = QEMU_OPT_STRING, \
868 .help = "net client type (nic, tap etc.)", \
871 .type = QEMU_OPT_NUMBER, \
872 .help = "vlan number", \
875 .type = QEMU_OPT_STRING, \
876 .help = "identifier for monitor commands", \
879 typedef int (*net_client_init_func)(QemuOpts *opts,
884 /* magic number, but compiler will warn if too small */
885 #define NET_MAX_DESC 20
887 static const struct {
889 net_client_init_func init;
890 QemuOptDesc desc[NET_MAX_DESC];
891 } net_client_types[] = {
895 NET_COMMON_PARAMS_DESC,
896 { /* end of list */ }
900 .init = net_init_nic,
902 NET_COMMON_PARAMS_DESC,
905 .type = QEMU_OPT_STRING,
906 .help = "id of -netdev to connect to",
910 .type = QEMU_OPT_STRING,
911 .help = "MAC address",
914 .type = QEMU_OPT_STRING,
915 .help = "device model (e1000, rtl8139, virtio etc.)",
918 .type = QEMU_OPT_STRING,
919 .help = "PCI device address",
922 .type = QEMU_OPT_NUMBER,
923 .help = "number of MSI-x vectors, 0 to disable MSI-X",
925 { /* end of list */ }
930 .init = net_init_slirp,
932 NET_COMMON_PARAMS_DESC,
935 .type = QEMU_OPT_STRING,
936 .help = "client hostname reported by the builtin DHCP server",
939 .type = QEMU_OPT_STRING,
940 .help = "isolate the guest from the host (y|yes|n|no)",
943 .type = QEMU_OPT_STRING,
944 .help = "legacy parameter, use net= instead",
947 .type = QEMU_OPT_STRING,
948 .help = "IP address and optional netmask",
951 .type = QEMU_OPT_STRING,
952 .help = "guest-visible address of the host",
955 .type = QEMU_OPT_STRING,
956 .help = "root directory of the built-in TFTP server",
959 .type = QEMU_OPT_STRING,
960 .help = "BOOTP filename, for use with tftp=",
963 .type = QEMU_OPT_STRING,
964 .help = "the first of the 16 IPs the built-in DHCP server can assign",
967 .type = QEMU_OPT_STRING,
968 .help = "guest-visible address of the virtual nameserver",
971 .type = QEMU_OPT_STRING,
972 .help = "root directory of the built-in SMB server",
975 .type = QEMU_OPT_STRING,
976 .help = "IP address of the built-in SMB server",
979 .type = QEMU_OPT_STRING,
980 .help = "guest port number to forward incoming TCP or UDP connections",
983 .type = QEMU_OPT_STRING,
984 .help = "IP address and port to forward guest TCP connections",
986 { /* end of list */ }
991 .init = net_init_tap,
993 NET_COMMON_PARAMS_DESC,
996 .type = QEMU_OPT_STRING,
997 .help = "interface name",
1002 .type = QEMU_OPT_STRING,
1003 .help = "file descriptor of an already opened tap",
1006 .type = QEMU_OPT_STRING,
1007 .help = "script to initialize the interface",
1009 .name = "downscript",
1010 .type = QEMU_OPT_STRING,
1011 .help = "script to shut down the interface",
1014 .type = QEMU_OPT_SIZE,
1015 .help = "send buffer limit"
1018 .type = QEMU_OPT_BOOL,
1019 .help = "enable the IFF_VNET_HDR flag on the tap interface"
1022 .type = QEMU_OPT_BOOL,
1023 .help = "enable vhost-net network accelerator",
1026 .type = QEMU_OPT_STRING,
1027 .help = "file descriptor of an already opened vhost net device",
1030 { /* end of list */ }
1034 .init = net_init_socket,
1036 NET_COMMON_PARAMS_DESC,
1039 .type = QEMU_OPT_STRING,
1040 .help = "file descriptor of an already opened socket",
1043 .type = QEMU_OPT_STRING,
1044 .help = "port number, and optional hostname, to listen on",
1047 .type = QEMU_OPT_STRING,
1048 .help = "port number, and optional hostname, to connect to",
1051 .type = QEMU_OPT_STRING,
1052 .help = "UDP multicast address and port number",
1054 .name = "localaddr",
1055 .type = QEMU_OPT_STRING,
1056 .help = "source address for multicast packets",
1058 { /* end of list */ }
1063 .init = net_init_vde,
1065 NET_COMMON_PARAMS_DESC,
1068 .type = QEMU_OPT_STRING,
1069 .help = "socket path",
1072 .type = QEMU_OPT_NUMBER,
1073 .help = "port number",
1076 .type = QEMU_OPT_STRING,
1077 .help = "group owner of socket",
1080 .type = QEMU_OPT_NUMBER,
1081 .help = "permissions for socket",
1083 { /* end of list */ }
1088 .init = net_init_dump,
1090 NET_COMMON_PARAMS_DESC,
1093 .type = QEMU_OPT_SIZE,
1094 .help = "per-packet size limit (64k default)",
1097 .type = QEMU_OPT_STRING,
1098 .help = "dump file path (default is qemu-vlan0.pcap)",
1100 { /* end of list */ }
1103 { /* end of list */ }
1106 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1112 type = qemu_opt_get(opts, "type");
1114 qerror_report(QERR_MISSING_PARAMETER, "type");
1119 if (strcmp(type, "tap") != 0 &&
1121 strcmp(type, "user") != 0 &&
1124 strcmp(type, "vde") != 0 &&
1126 strcmp(type, "socket") != 0) {
1127 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1128 "a netdev backend type");
1132 if (qemu_opt_get(opts, "vlan")) {
1133 qerror_report(QERR_INVALID_PARAMETER, "vlan");
1136 if (qemu_opt_get(opts, "name")) {
1137 qerror_report(QERR_INVALID_PARAMETER, "name");
1140 if (!qemu_opts_id(opts)) {
1141 qerror_report(QERR_MISSING_PARAMETER, "id");
1146 name = qemu_opts_id(opts);
1148 name = qemu_opt_get(opts, "name");
1151 for (i = 0; net_client_types[i].type != NULL; i++) {
1152 if (!strcmp(net_client_types[i].type, type)) {
1153 VLANState *vlan = NULL;
1156 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1160 /* Do not add to a vlan if it's a -netdev or a nic with a
1161 * netdev= parameter. */
1163 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1164 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1168 if (net_client_types[i].init) {
1169 ret = net_client_types[i].init(opts, mon, name, vlan);
1171 /* TODO push error reporting into init() methods */
1172 qerror_report(QERR_DEVICE_INIT_FAILED, type);
1180 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1181 "a network client type");
1185 static int net_host_check_device(const char *device)
1188 const char *valid_param_list[] = { "tap", "socket", "dump"
1196 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1197 if (!strncmp(valid_param_list[i], device,
1198 strlen(valid_param_list[i])))
1205 void net_host_device_add(Monitor *mon, const QDict *qdict)
1207 const char *device = qdict_get_str(qdict, "device");
1208 const char *opts_str = qdict_get_try_str(qdict, "opts");
1211 if (!net_host_check_device(device)) {
1212 monitor_printf(mon, "invalid host network device %s\n", device);
1216 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1221 qemu_opt_set(opts, "type", device);
1223 if (net_client_init(mon, opts, 0) < 0) {
1224 monitor_printf(mon, "adding host network device %s failed\n", device);
1228 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1230 VLANClientState *vc;
1231 int vlan_id = qdict_get_int(qdict, "vlan_id");
1232 const char *device = qdict_get_str(qdict, "device");
1234 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1238 if (!net_host_check_device(vc->model)) {
1239 monitor_printf(mon, "invalid host network device %s\n", device);
1242 qemu_del_vlan_client(vc);
1245 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1250 opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
1255 res = net_client_init(mon, opts, 1);
1257 qemu_opts_del(opts);
1263 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1265 const char *id = qdict_get_str(qdict, "id");
1266 VLANClientState *vc;
1268 vc = qemu_find_netdev(id);
1269 if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
1270 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1273 qemu_del_vlan_client(vc);
1274 qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
1278 void do_info_network(Monitor *mon)
1281 VLANClientState *vc;
1283 QTAILQ_FOREACH(vlan, &vlans, next) {
1284 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1286 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1287 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
1290 monitor_printf(mon, "Devices not on any VLAN:\n");
1291 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1292 monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
1294 monitor_printf(mon, " peer=%s", vc->peer->name);
1296 monitor_printf(mon, "\n");
1300 int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
1303 VLANClientState *vc = NULL;
1304 const char *name = qdict_get_str(qdict, "name");
1305 int up = qdict_get_bool(qdict, "up");
1307 QTAILQ_FOREACH(vlan, &vlans, next) {
1308 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1309 if (strcmp(vc->name, name) == 0) {
1314 vc = qemu_find_netdev(name);
1318 qerror_report(QERR_DEVICE_NOT_FOUND, name);
1322 vc->link_down = !up;
1324 if (vc->info->link_status_changed) {
1325 vc->info->link_status_changed(vc);
1328 /* Notify peer. Don't update peer link status: this makes it possible to
1329 * disconnect from host network without notifying the guest.
1330 * FIXME: is disconnected link status change operation useful?
1332 * Current behaviour is compatible with qemu vlans where there could be
1333 * multiple clients that can still communicate with each other in
1334 * disconnected mode. For now maintain this compatibility. */
1335 if (vc->peer && vc->peer->info->link_status_changed) {
1336 vc->peer->info->link_status_changed(vc->peer);
1341 void net_cleanup(void)
1344 VLANClientState *vc, *next_vc;
1346 QTAILQ_FOREACH(vlan, &vlans, next) {
1347 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1348 qemu_del_vlan_client(vc);
1352 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1353 qemu_del_vlan_client(vc);
1357 void net_check_clients(void)
1360 VLANClientState *vc;
1361 int has_nic = 0, has_host_dev = 0;
1363 QTAILQ_FOREACH(vlan, &vlans, next) {
1364 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1365 switch (vc->info->type) {
1366 case NET_CLIENT_TYPE_NIC:
1369 case NET_CLIENT_TYPE_SLIRP:
1370 case NET_CLIENT_TYPE_TAP:
1371 case NET_CLIENT_TYPE_SOCKET:
1372 case NET_CLIENT_TYPE_VDE:
1378 if (has_host_dev && !has_nic)
1379 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1380 if (has_nic && !has_host_dev)
1382 "Warning: vlan %d is not connected to host network\n",
1385 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1387 fprintf(stderr, "Warning: %s %s has no peer\n",
1388 vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1394 static int net_init_client(QemuOpts *opts, void *dummy)
1396 if (net_client_init(NULL, opts, 0) < 0)
1401 static int net_init_netdev(QemuOpts *opts, void *dummy)
1403 return net_client_init(NULL, opts, 1);
1406 int net_init_clients(void)
1408 QemuOptsList *net = qemu_find_opts("net");
1411 /* if no clients, we use a default config */
1412 qemu_opts_set(net, NULL, "type", "nic");
1414 qemu_opts_set(net, NULL, "type", "user");
1418 QTAILQ_INIT(&vlans);
1419 QTAILQ_INIT(&non_vlan_clients);
1421 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1424 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1431 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1433 #if defined(CONFIG_SLIRP)
1435 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1440 if (!qemu_opts_parse(opts_list, optarg, 1)) {