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)
157
QTAILQ_FOREACH(vlan, &vlans, next) {
158
QTAILQ_FOREACH(vc, &vlan->clients, next) {
159
if (vc != vc1 && strcmp(vc->model, model) == 0) {
165
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
166
if (vc != vc1 && strcmp(vc->model, model) == 0) {
171
snprintf(buf, sizeof(buf), "%s.%d", model, id);
173
return g_strdup(buf);
176
static ssize_t qemu_deliver_packet(VLANClientState *sender,
181
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
183
const struct iovec *iov,
187
VLANClientState *qemu_new_net_client(NetClientInfo *info,
189
VLANClientState *peer,
195
assert(info->size >= sizeof(VLANClientState));
197
vc = g_malloc0(info->size);
200
vc->model = g_strdup(model);
202
vc->name = g_strdup(name);
204
vc->name = assign_name(vc, model);
210
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
217
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
219
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
220
qemu_deliver_packet_iov,
227
NICState *qemu_new_nic(NetClientInfo *info,
236
assert(info->type == NET_CLIENT_TYPE_NIC);
237
assert(info->size >= sizeof(NICState));
239
nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
241
nic = DO_UPCAST(NICState, nc, nc);
243
nic->opaque = opaque;
248
static void qemu_cleanup_vlan_client(VLANClientState *vc)
251
QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
253
QTAILQ_REMOVE(&non_vlan_clients, vc, next);
256
if (vc->info->cleanup) {
257
vc->info->cleanup(vc);
261
static void qemu_free_vlan_client(VLANClientState *vc)
264
if (vc->send_queue) {
265
qemu_del_net_queue(vc->send_queue);
268
vc->peer->peer = NULL;
276
void qemu_del_vlan_client(VLANClientState *vc)
278
/* If there is a peer NIC, delete and cleanup client, but do not free. */
279
if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
280
NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
281
if (nic->peer_deleted) {
284
nic->peer_deleted = true;
285
/* Let NIC know peer is gone. */
286
vc->peer->link_down = true;
287
if (vc->peer->info->link_status_changed) {
288
vc->peer->info->link_status_changed(vc->peer);
290
qemu_cleanup_vlan_client(vc);
294
/* If this is a peer NIC and peer has already been deleted, free it now. */
295
if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
296
NICState *nic = DO_UPCAST(NICState, nc, vc);
297
if (nic->peer_deleted) {
298
qemu_free_vlan_client(vc->peer);
302
qemu_cleanup_vlan_client(vc);
303
qemu_free_vlan_client(vc);
307
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
308
const char *client_str)
313
vlan = qemu_find_vlan(vlan_id, 0);
315
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
319
QTAILQ_FOREACH(vc, &vlan->clients, next) {
320
if (!strcmp(vc->name, client_str)) {
325
monitor_printf(mon, "can't find device %s on VLAN %d\n",
326
client_str, vlan_id);
332
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
337
QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
338
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
339
func(DO_UPCAST(NICState, nc, nc), opaque);
343
QTAILQ_FOREACH(vlan, &vlans, next) {
344
QTAILQ_FOREACH(nc, &vlan->clients, next) {
345
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
346
func(DO_UPCAST(NICState, nc, nc), opaque);
352
int qemu_can_send_packet(VLANClientState *sender)
354
VLANState *vlan = sender->vlan;
358
if (sender->peer->receive_disabled) {
360
} else if (sender->peer->info->can_receive &&
361
!sender->peer->info->can_receive(sender->peer)) {
372
QTAILQ_FOREACH(vc, &vlan->clients, next) {
377
/* no can_receive() handler, they can always receive */
378
if (vc->info->can_receive && !vc->info->can_receive(vc)) {
385
static ssize_t qemu_deliver_packet(VLANClientState *sender,
391
VLANClientState *vc = opaque;
398
if (vc->receive_disabled) {
402
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
403
ret = vc->info->receive_raw(vc, data, size);
405
ret = vc->info->receive(vc, data, size);
409
vc->receive_disabled = 1;
415
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
421
VLANState *vlan = opaque;
425
QTAILQ_FOREACH(vc, &vlan->clients, next) {
437
if (vc->receive_disabled) {
442
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
443
len = vc->info->receive_raw(vc, buf, size);
445
len = vc->info->receive(vc, buf, size);
449
vc->receive_disabled = 1;
452
ret = (ret >= 0) ? ret : len;
459
void qemu_purge_queued_packets(VLANClientState *vc)
463
if (!vc->peer && !vc->vlan) {
468
queue = vc->peer->send_queue;
470
queue = vc->vlan->send_queue;
473
qemu_net_queue_purge(queue, vc);
476
void qemu_flush_queued_packets(VLANClientState *vc)
480
vc->receive_disabled = 0;
483
queue = vc->vlan->send_queue;
485
queue = vc->send_queue;
488
qemu_net_queue_flush(queue);
491
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
493
const uint8_t *buf, int size,
494
NetPacketSent *sent_cb)
499
printf("qemu_send_packet_async:\n");
500
hex_dump(stdout, buf, size);
503
if (sender->link_down || (!sender->peer && !sender->vlan)) {
508
queue = sender->peer->send_queue;
510
queue = sender->vlan->send_queue;
513
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
516
ssize_t qemu_send_packet_async(VLANClientState *sender,
517
const uint8_t *buf, int size,
518
NetPacketSent *sent_cb)
520
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
524
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
526
qemu_send_packet_async(vc, buf, size, NULL);
529
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
531
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
535
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
538
uint8_t buffer[4096];
541
offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer));
543
return vc->info->receive(vc, buffer, offset);
546
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
548
const struct iovec *iov,
552
VLANClientState *vc = opaque;
555
return iov_size(iov, iovcnt);
558
if (vc->info->receive_iov) {
559
return vc->info->receive_iov(vc, iov, iovcnt);
561
return vc_sendv_compat(vc, iov, iovcnt);
565
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
567
const struct iovec *iov,
571
VLANState *vlan = opaque;
575
QTAILQ_FOREACH(vc, &vlan->clients, next) {
583
ret = iov_size(iov, iovcnt);
587
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
589
if (vc->info->receive_iov) {
590
len = vc->info->receive_iov(vc, iov, iovcnt);
592
len = vc_sendv_compat(vc, iov, iovcnt);
595
ret = (ret >= 0) ? ret : len;
601
ssize_t qemu_sendv_packet_async(VLANClientState *sender,
602
const struct iovec *iov, int iovcnt,
603
NetPacketSent *sent_cb)
607
if (sender->link_down || (!sender->peer && !sender->vlan)) {
608
return iov_size(iov, iovcnt);
612
queue = sender->peer->send_queue;
614
queue = sender->vlan->send_queue;
617
return qemu_net_queue_send_iov(queue, sender,
618
QEMU_NET_PACKET_FLAG_NONE,
619
iov, iovcnt, sent_cb);
623
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
625
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
628
/* find or alloc a new VLAN */
629
VLANState *qemu_find_vlan(int id, int allocate)
633
QTAILQ_FOREACH(vlan, &vlans, next) {
634
if (vlan->id == id) {
643
vlan = g_malloc0(sizeof(VLANState));
645
QTAILQ_INIT(&vlan->clients);
647
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
648
qemu_vlan_deliver_packet_iov,
651
QTAILQ_INSERT_TAIL(&vlans, vlan, next);
656
VLANClientState *qemu_find_netdev(const char *id)
660
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
661
if (vc->info->type == NET_CLIENT_TYPE_NIC)
663
if (!strcmp(vc->name, id)) {
671
static int nic_get_free_idx(void)
675
for (index = 0; index < MAX_NICS; index++)
676
if (!nd_table[index].used)
681
int qemu_show_nic_models(const char *arg, const char *const *models)
685
if (!arg || strcmp(arg, "?"))
688
fprintf(stderr, "qemu: Supported NIC models: ");
689
for (i = 0 ; models[i]; i++)
690
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
694
void qemu_check_nic_model(NICInfo *nd, const char *model)
696
const char *models[2];
701
if (qemu_show_nic_models(nd->model, models))
703
if (qemu_find_nic_model(nd, models, model) < 0)
707
int qemu_find_nic_model(NICInfo *nd, const char * const *models,
708
const char *default_model)
713
nd->model = g_strdup(default_model);
715
for (i = 0 ; models[i]; i++) {
716
if (strcmp(nd->model, models[i]) == 0)
720
error_report("Unsupported NIC model: %s", nd->model);
724
int net_handle_fd_param(Monitor *mon, const char *param)
728
if (!qemu_isdigit(param[0]) && mon) {
730
fd = monitor_get_fd(mon, param);
732
error_report("No file descriptor named %s found", param);
736
fd = qemu_parse_fd(param);
742
static int net_init_nic(QemuOpts *opts,
751
idx = nic_get_free_idx();
752
if (idx == -1 || nb_nics >= MAX_NICS) {
753
error_report("Too Many NICs");
759
memset(nd, 0, sizeof(*nd));
761
if ((netdev = qemu_opt_get(opts, "netdev"))) {
762
nd->netdev = qemu_find_netdev(netdev);
764
error_report("netdev '%s' not found", netdev);
772
nd->name = g_strdup(name);
774
if (qemu_opt_get(opts, "model")) {
775
nd->model = g_strdup(qemu_opt_get(opts, "model"));
777
if (qemu_opt_get(opts, "addr")) {
778
nd->devaddr = g_strdup(qemu_opt_get(opts, "addr"));
781
if (qemu_opt_get(opts, "macaddr") &&
782
net_parse_macaddr(nd->macaddr.a, qemu_opt_get(opts, "macaddr")) < 0) {
783
error_report("invalid syntax for ethernet address");
786
qemu_macaddr_default_if_unset(&nd->macaddr);
788
nd->nvectors = qemu_opt_get_number(opts, "vectors",
789
DEV_NVECTORS_UNSPECIFIED);
790
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
791
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
792
error_report("invalid # of vectors: %d", nd->nvectors);
802
#define NET_COMMON_PARAMS_DESC \
805
.type = QEMU_OPT_STRING, \
806
.help = "net client type (nic, tap etc.)", \
809
.type = QEMU_OPT_NUMBER, \
810
.help = "vlan number", \
813
.type = QEMU_OPT_STRING, \
814
.help = "identifier for monitor commands", \
817
typedef int (*net_client_init_func)(QemuOpts *opts,
822
/* magic number, but compiler will warn if too small */
823
#define NET_MAX_DESC 20
825
static const struct {
827
net_client_init_func init;
828
QemuOptDesc desc[NET_MAX_DESC];
829
} net_client_types[NET_CLIENT_TYPE_MAX] = {
830
[NET_CLIENT_TYPE_NONE] = {
833
NET_COMMON_PARAMS_DESC,
834
{ /* end of list */ }
837
[NET_CLIENT_TYPE_NIC] = {
839
.init = net_init_nic,
841
NET_COMMON_PARAMS_DESC,
844
.type = QEMU_OPT_STRING,
845
.help = "id of -netdev to connect to",
849
.type = QEMU_OPT_STRING,
850
.help = "MAC address",
853
.type = QEMU_OPT_STRING,
854
.help = "device model (e1000, rtl8139, virtio etc.)",
857
.type = QEMU_OPT_STRING,
858
.help = "PCI device address",
861
.type = QEMU_OPT_NUMBER,
862
.help = "number of MSI-x vectors, 0 to disable MSI-X",
864
{ /* end of list */ }
868
[NET_CLIENT_TYPE_USER] = {
870
.init = net_init_slirp,
872
NET_COMMON_PARAMS_DESC,
875
.type = QEMU_OPT_STRING,
876
.help = "client hostname reported by the builtin DHCP server",
879
.type = QEMU_OPT_STRING,
880
.help = "isolate the guest from the host (y|yes|n|no)",
883
.type = QEMU_OPT_STRING,
884
.help = "legacy parameter, use net= instead",
887
.type = QEMU_OPT_STRING,
888
.help = "IP address and optional netmask",
891
.type = QEMU_OPT_STRING,
892
.help = "guest-visible address of the host",
895
.type = QEMU_OPT_STRING,
896
.help = "root directory of the built-in TFTP server",
899
.type = QEMU_OPT_STRING,
900
.help = "BOOTP filename, for use with tftp=",
903
.type = QEMU_OPT_STRING,
904
.help = "the first of the 16 IPs the built-in DHCP server can assign",
907
.type = QEMU_OPT_STRING,
908
.help = "guest-visible address of the virtual nameserver",
911
.type = QEMU_OPT_STRING,
912
.help = "root directory of the built-in SMB server",
915
.type = QEMU_OPT_STRING,
916
.help = "IP address of the built-in SMB server",
919
.type = QEMU_OPT_STRING,
920
.help = "guest port number to forward incoming TCP or UDP connections",
923
.type = QEMU_OPT_STRING,
924
.help = "IP address and port to forward guest TCP connections",
926
{ /* end of list */ }
930
[NET_CLIENT_TYPE_TAP] = {
932
.init = net_init_tap,
934
NET_COMMON_PARAMS_DESC,
937
.type = QEMU_OPT_STRING,
938
.help = "interface name",
943
.type = QEMU_OPT_STRING,
944
.help = "file descriptor of an already opened tap",
947
.type = QEMU_OPT_STRING,
948
.help = "script to initialize the interface",
950
.name = "downscript",
951
.type = QEMU_OPT_STRING,
952
.help = "script to shut down the interface",
955
.type = QEMU_OPT_SIZE,
956
.help = "send buffer limit"
959
.type = QEMU_OPT_BOOL,
960
.help = "enable the IFF_VNET_HDR flag on the tap interface"
963
.type = QEMU_OPT_BOOL,
964
.help = "enable vhost-net network accelerator",
967
.type = QEMU_OPT_STRING,
968
.help = "file descriptor of an already opened vhost net device",
970
.name = "vhostforce",
971
.type = QEMU_OPT_BOOL,
972
.help = "force vhost on for non-MSIX virtio guests",
975
{ /* end of list */ }
978
[NET_CLIENT_TYPE_SOCKET] = {
980
.init = net_init_socket,
982
NET_COMMON_PARAMS_DESC,
985
.type = QEMU_OPT_STRING,
986
.help = "file descriptor of an already opened socket",
989
.type = QEMU_OPT_STRING,
990
.help = "port number, and optional hostname, to listen on",
993
.type = QEMU_OPT_STRING,
994
.help = "port number, and optional hostname, to connect to",
997
.type = QEMU_OPT_STRING,
998
.help = "UDP multicast address and port number",
1000
.name = "localaddr",
1001
.type = QEMU_OPT_STRING,
1002
.help = "source address for multicast packets",
1004
{ /* end of list */ }
1008
[NET_CLIENT_TYPE_VDE] = {
1010
.init = net_init_vde,
1012
NET_COMMON_PARAMS_DESC,
1015
.type = QEMU_OPT_STRING,
1016
.help = "socket path",
1019
.type = QEMU_OPT_NUMBER,
1020
.help = "port number",
1023
.type = QEMU_OPT_STRING,
1024
.help = "group owner of socket",
1027
.type = QEMU_OPT_NUMBER,
1028
.help = "permissions for socket",
1030
{ /* end of list */ }
1034
[NET_CLIENT_TYPE_DUMP] = {
1036
.init = net_init_dump,
1038
NET_COMMON_PARAMS_DESC,
1041
.type = QEMU_OPT_SIZE,
1042
.help = "per-packet size limit (64k default)",
1045
.type = QEMU_OPT_STRING,
1046
.help = "dump file path (default is qemu-vlan0.pcap)",
1048
{ /* end of list */ }
1053
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1059
type = qemu_opt_get(opts, "type");
1061
qerror_report(QERR_MISSING_PARAMETER, "type");
1066
if (strcmp(type, "tap") != 0 &&
1068
strcmp(type, "user") != 0 &&
1071
strcmp(type, "vde") != 0 &&
1073
strcmp(type, "socket") != 0) {
1074
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1075
"a netdev backend type");
1079
if (qemu_opt_get(opts, "vlan")) {
1080
qerror_report(QERR_INVALID_PARAMETER, "vlan");
1083
if (qemu_opt_get(opts, "name")) {
1084
qerror_report(QERR_INVALID_PARAMETER, "name");
1087
if (!qemu_opts_id(opts)) {
1088
qerror_report(QERR_MISSING_PARAMETER, "id");
1093
name = qemu_opts_id(opts);
1095
name = qemu_opt_get(opts, "name");
1098
for (i = 0; i < NET_CLIENT_TYPE_MAX; i++) {
1099
if (net_client_types[i].type != NULL &&
1100
!strcmp(net_client_types[i].type, type)) {
1101
VLANState *vlan = NULL;
1104
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1108
/* Do not add to a vlan if it's a -netdev or a nic with a
1109
* netdev= parameter. */
1111
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1112
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1116
if (net_client_types[i].init) {
1117
ret = net_client_types[i].init(opts, mon, name, vlan);
1119
/* TODO push error reporting into init() methods */
1120
qerror_report(QERR_DEVICE_INIT_FAILED, type);
1128
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1129
"a network client type");
1133
static int net_host_check_device(const char *device)
1136
const char *valid_param_list[] = { "tap", "socket", "dump"
1144
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1145
if (!strncmp(valid_param_list[i], device,
1146
strlen(valid_param_list[i])))
1153
void net_host_device_add(Monitor *mon, const QDict *qdict)
1155
const char *device = qdict_get_str(qdict, "device");
1156
const char *opts_str = qdict_get_try_str(qdict, "opts");
1159
if (!net_host_check_device(device)) {
1160
monitor_printf(mon, "invalid host network device %s\n", device);
1164
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1169
qemu_opt_set(opts, "type", device);
1171
if (net_client_init(mon, opts, 0) < 0) {
1172
monitor_printf(mon, "adding host network device %s failed\n", device);
1176
void net_host_device_remove(Monitor *mon, const QDict *qdict)
1178
VLANClientState *vc;
1179
int vlan_id = qdict_get_int(qdict, "vlan_id");
1180
const char *device = qdict_get_str(qdict, "device");
1182
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1186
if (!net_host_check_device(vc->model)) {
1187
monitor_printf(mon, "invalid host network device %s\n", device);
1190
qemu_del_vlan_client(vc);
1193
int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1198
opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
1203
res = net_client_init(mon, opts, 1);
1205
qemu_opts_del(opts);
1211
int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1213
const char *id = qdict_get_str(qdict, "id");
1214
VLANClientState *vc;
1216
vc = qemu_find_netdev(id);
1218
qerror_report(QERR_DEVICE_NOT_FOUND, id);
1221
qemu_del_vlan_client(vc);
1222
qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
1226
static void print_net_client(Monitor *mon, VLANClientState *vc)
1228
monitor_printf(mon, "%s: type=%s,%s\n", vc->name,
1229
net_client_types[vc->info->type].type, vc->info_str);
1232
void do_info_network(Monitor *mon)
1235
VLANClientState *vc, *peer;
1236
net_client_type type;
1238
QTAILQ_FOREACH(vlan, &vlans, next) {
1239
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1241
QTAILQ_FOREACH(vc, &vlan->clients, next) {
1242
monitor_printf(mon, " ");
1243
print_net_client(mon, vc);
1246
monitor_printf(mon, "Devices not on any VLAN:\n");
1247
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1249
type = vc->info->type;
1250
if (!peer || type == NET_CLIENT_TYPE_NIC) {
1251
monitor_printf(mon, " ");
1252
print_net_client(mon, vc);
1253
} /* else it's a netdev connected to a NIC, printed with the NIC */
1254
if (peer && type == NET_CLIENT_TYPE_NIC) {
1255
monitor_printf(mon, " \\ ");
1256
print_net_client(mon, peer);
1261
int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
1264
VLANClientState *vc = NULL;
1265
const char *name = qdict_get_str(qdict, "name");
1266
int up = qdict_get_bool(qdict, "up");
1268
QTAILQ_FOREACH(vlan, &vlans, next) {
1269
QTAILQ_FOREACH(vc, &vlan->clients, next) {
1270
if (strcmp(vc->name, name) == 0) {
1275
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1276
if (!strcmp(vc->name, name)) {
1283
qerror_report(QERR_DEVICE_NOT_FOUND, name);
1287
vc->link_down = !up;
1289
if (vc->info->link_status_changed) {
1290
vc->info->link_status_changed(vc);
1293
/* Notify peer. Don't update peer link status: this makes it possible to
1294
* disconnect from host network without notifying the guest.
1295
* FIXME: is disconnected link status change operation useful?
1297
* Current behaviour is compatible with qemu vlans where there could be
1298
* multiple clients that can still communicate with each other in
1299
* disconnected mode. For now maintain this compatibility. */
1300
if (vc->peer && vc->peer->info->link_status_changed) {
1301
vc->peer->info->link_status_changed(vc->peer);
1306
void net_cleanup(void)
1309
VLANClientState *vc, *next_vc;
1311
QTAILQ_FOREACH(vlan, &vlans, next) {
1312
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1313
qemu_del_vlan_client(vc);
1317
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1318
qemu_del_vlan_client(vc);
1322
void net_check_clients(void)
1325
VLANClientState *vc;
1328
/* Don't warn about the default network setup that you get if
1329
* no command line -net or -netdev options are specified. There
1330
* are two cases that we would otherwise complain about:
1331
* (1) board doesn't support a NIC but the implicit "-net nic"
1333
* (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1334
* sets up a nic that isn't connected to anything.
1340
QTAILQ_FOREACH(vlan, &vlans, next) {
1341
int has_nic = 0, has_host_dev = 0;
1343
QTAILQ_FOREACH(vc, &vlan->clients, next) {
1344
switch (vc->info->type) {
1345
case NET_CLIENT_TYPE_NIC:
1348
case NET_CLIENT_TYPE_USER:
1349
case NET_CLIENT_TYPE_TAP:
1350
case NET_CLIENT_TYPE_SOCKET:
1351
case NET_CLIENT_TYPE_VDE:
1357
if (has_host_dev && !has_nic)
1358
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1359
if (has_nic && !has_host_dev)
1361
"Warning: vlan %d is not connected to host network\n",
1364
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1366
fprintf(stderr, "Warning: %s %s has no peer\n",
1367
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1372
/* Check that all NICs requested via -net nic actually got created.
1373
* NICs created via -device don't need to be checked here because
1374
* they are always instantiated.
1376
for (i = 0; i < MAX_NICS; i++) {
1377
NICInfo *nd = &nd_table[i];
1378
if (nd->used && !nd->instantiated) {
1379
fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1380
"was not created (not supported by this machine?)\n",
1381
nd->name ? nd->name : "anonymous",
1382
nd->model ? nd->model : "unspecified");
1387
static int net_init_client(QemuOpts *opts, void *dummy)
1389
if (net_client_init(NULL, opts, 0) < 0)
1394
static int net_init_netdev(QemuOpts *opts, void *dummy)
1396
return net_client_init(NULL, opts, 1);
1399
int net_init_clients(void)
1401
QemuOptsList *net = qemu_find_opts("net");
1404
/* if no clients, we use a default config */
1405
qemu_opts_set(net, NULL, "type", "nic");
1407
qemu_opts_set(net, NULL, "type", "user");
1411
QTAILQ_INIT(&vlans);
1412
QTAILQ_INIT(&non_vlan_clients);
1414
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1417
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1424
int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1426
#if defined(CONFIG_SLIRP)
1428
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1433
if (!qemu_opts_parse(opts_list, optarg, 1)) {