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"
38 #include "qmp-commands.h"
41 #include "qapi-visit.h"
42 #include "qapi/opts-visitor.h"
43 #include "qapi/qapi-dealloc-visitor.h"
45 /* Net bridge is currently not supported for W32. */
47 # define CONFIG_NET_BRIDGE
50 static QTAILQ_HEAD(, VLANState
) vlans
;
51 static QTAILQ_HEAD(, VLANClientState
) non_vlan_clients
;
55 /***********************************************************/
56 /* network device redirectors */
58 #if defined(DEBUG_NET)
59 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
63 for(i
=0;i
<size
;i
+=16) {
67 fprintf(f
, "%08x ", i
);
70 fprintf(f
, " %02x", buf
[i
+j
]);
77 if (c
< ' ' || c
> '~')
86 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
97 if (len
> buf_size
- 1)
106 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
114 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
116 saddr
->sin_family
= AF_INET
;
117 if (buf
[0] == '\0') {
118 saddr
->sin_addr
.s_addr
= 0;
120 if (qemu_isdigit(buf
[0])) {
121 if (!inet_aton(buf
, &saddr
->sin_addr
))
124 if ((he
= gethostbyname(buf
)) == NULL
)
126 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
129 port
= strtol(p
, (char **)&r
, 0);
132 saddr
->sin_port
= htons(port
);
136 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
138 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
139 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
141 macaddr
[0], macaddr
[1], macaddr
[2],
142 macaddr
[3], macaddr
[4], macaddr
[5]);
145 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
147 static int index
= 0;
148 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
150 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
152 macaddr
->a
[0] = 0x52;
153 macaddr
->a
[1] = 0x54;
154 macaddr
->a
[2] = 0x00;
155 macaddr
->a
[3] = 0x12;
156 macaddr
->a
[4] = 0x34;
157 macaddr
->a
[5] = 0x56 + index
++;
161 * Generate a name for net client
163 * Only net clients created with the legacy -net option need this. Naming is
164 * mandatory for net clients created with -netdev.
166 static char *assign_name(VLANClientState
*vc1
, const char *model
)
172 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
176 /* For compatibility only bump id for net clients on a vlan */
177 if (strcmp(vc
->model
, model
) == 0 &&
178 net_hub_id_for_client(vc
, NULL
) == 0) {
183 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
185 return g_strdup(buf
);
188 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
193 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
195 const struct iovec
*iov
,
199 VLANClientState
*qemu_new_net_client(NetClientInfo
*info
,
201 VLANClientState
*peer
,
207 assert(info
->size
>= sizeof(VLANClientState
));
209 vc
= g_malloc0(info
->size
);
212 vc
->model
= g_strdup(model
);
214 vc
->name
= g_strdup(name
);
216 vc
->name
= assign_name(vc
, model
);
222 QTAILQ_INSERT_TAIL(&vc
->vlan
->clients
, vc
, next
);
229 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
231 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
232 qemu_deliver_packet_iov
,
239 NICState
*qemu_new_nic(NetClientInfo
*info
,
248 assert(info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
);
249 assert(info
->size
>= sizeof(NICState
));
251 nc
= qemu_new_net_client(info
, conf
->vlan
, conf
->peer
, model
, name
);
253 nic
= DO_UPCAST(NICState
, nc
, nc
);
255 nic
->opaque
= opaque
;
260 static void qemu_cleanup_vlan_client(VLANClientState
*vc
)
263 QTAILQ_REMOVE(&vc
->vlan
->clients
, vc
, next
);
265 QTAILQ_REMOVE(&non_vlan_clients
, vc
, next
);
268 if (vc
->info
->cleanup
) {
269 vc
->info
->cleanup(vc
);
273 static void qemu_free_vlan_client(VLANClientState
*vc
)
276 if (vc
->send_queue
) {
277 qemu_del_net_queue(vc
->send_queue
);
280 vc
->peer
->peer
= NULL
;
288 void qemu_del_vlan_client(VLANClientState
*vc
)
290 /* If there is a peer NIC, delete and cleanup client, but do not free. */
291 if (!vc
->vlan
&& vc
->peer
&& vc
->peer
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
292 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
->peer
);
293 if (nic
->peer_deleted
) {
296 nic
->peer_deleted
= true;
297 /* Let NIC know peer is gone. */
298 vc
->peer
->link_down
= true;
299 if (vc
->peer
->info
->link_status_changed
) {
300 vc
->peer
->info
->link_status_changed(vc
->peer
);
302 qemu_cleanup_vlan_client(vc
);
306 /* If this is a peer NIC and peer has already been deleted, free it now. */
307 if (!vc
->vlan
&& vc
->peer
&& vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
308 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
);
309 if (nic
->peer_deleted
) {
310 qemu_free_vlan_client(vc
->peer
);
314 qemu_cleanup_vlan_client(vc
);
315 qemu_free_vlan_client(vc
);
318 void qemu_foreach_nic(qemu_nic_foreach func
, void *opaque
)
323 QTAILQ_FOREACH(nc
, &non_vlan_clients
, next
) {
324 if (nc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
325 func(DO_UPCAST(NICState
, nc
, nc
), opaque
);
329 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
330 QTAILQ_FOREACH(nc
, &vlan
->clients
, next
) {
331 if (nc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
332 func(DO_UPCAST(NICState
, nc
, nc
), opaque
);
338 int qemu_can_send_packet(VLANClientState
*sender
)
340 VLANState
*vlan
= sender
->vlan
;
344 if (sender
->peer
->receive_disabled
) {
346 } else if (sender
->peer
->info
->can_receive
&&
347 !sender
->peer
->info
->can_receive(sender
->peer
)) {
358 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
363 /* no can_receive() handler, they can always receive */
364 if (vc
->info
->can_receive
&& !vc
->info
->can_receive(vc
)) {
371 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
377 VLANClientState
*vc
= opaque
;
384 if (vc
->receive_disabled
) {
388 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->info
->receive_raw
) {
389 ret
= vc
->info
->receive_raw(vc
, data
, size
);
391 ret
= vc
->info
->receive(vc
, data
, size
);
395 vc
->receive_disabled
= 1;
401 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
407 VLANState
*vlan
= opaque
;
411 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
423 if (vc
->receive_disabled
) {
428 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->info
->receive_raw
) {
429 len
= vc
->info
->receive_raw(vc
, buf
, size
);
431 len
= vc
->info
->receive(vc
, buf
, size
);
435 vc
->receive_disabled
= 1;
438 ret
= (ret
>= 0) ? ret
: len
;
445 void qemu_purge_queued_packets(VLANClientState
*vc
)
449 if (!vc
->peer
&& !vc
->vlan
) {
454 queue
= vc
->peer
->send_queue
;
456 queue
= vc
->vlan
->send_queue
;
459 qemu_net_queue_purge(queue
, vc
);
462 void qemu_flush_queued_packets(VLANClientState
*vc
)
466 vc
->receive_disabled
= 0;
469 queue
= vc
->vlan
->send_queue
;
471 queue
= vc
->send_queue
;
474 qemu_net_queue_flush(queue
);
477 static ssize_t
qemu_send_packet_async_with_flags(VLANClientState
*sender
,
479 const uint8_t *buf
, int size
,
480 NetPacketSent
*sent_cb
)
485 printf("qemu_send_packet_async:\n");
486 hex_dump(stdout
, buf
, size
);
489 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
494 queue
= sender
->peer
->send_queue
;
496 queue
= sender
->vlan
->send_queue
;
499 return qemu_net_queue_send(queue
, sender
, flags
, buf
, size
, sent_cb
);
502 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
503 const uint8_t *buf
, int size
,
504 NetPacketSent
*sent_cb
)
506 return qemu_send_packet_async_with_flags(sender
, QEMU_NET_PACKET_FLAG_NONE
,
510 void qemu_send_packet(VLANClientState
*vc
, const uint8_t *buf
, int size
)
512 qemu_send_packet_async(vc
, buf
, size
, NULL
);
515 ssize_t
qemu_send_packet_raw(VLANClientState
*vc
, const uint8_t *buf
, int size
)
517 return qemu_send_packet_async_with_flags(vc
, QEMU_NET_PACKET_FLAG_RAW
,
521 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
524 uint8_t buffer
[4096];
527 offset
= iov_to_buf(iov
, iovcnt
, 0, buffer
, sizeof(buffer
));
529 return vc
->info
->receive(vc
, buffer
, offset
);
532 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
534 const struct iovec
*iov
,
538 VLANClientState
*vc
= opaque
;
541 return iov_size(iov
, iovcnt
);
544 if (vc
->info
->receive_iov
) {
545 return vc
->info
->receive_iov(vc
, iov
, iovcnt
);
547 return vc_sendv_compat(vc
, iov
, iovcnt
);
551 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
553 const struct iovec
*iov
,
557 VLANState
*vlan
= opaque
;
561 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
569 ret
= iov_size(iov
, iovcnt
);
573 assert(!(flags
& QEMU_NET_PACKET_FLAG_RAW
));
575 if (vc
->info
->receive_iov
) {
576 len
= vc
->info
->receive_iov(vc
, iov
, iovcnt
);
578 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
581 ret
= (ret
>= 0) ? ret
: len
;
587 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
588 const struct iovec
*iov
, int iovcnt
,
589 NetPacketSent
*sent_cb
)
593 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
594 return iov_size(iov
, iovcnt
);
598 queue
= sender
->peer
->send_queue
;
600 queue
= sender
->vlan
->send_queue
;
603 return qemu_net_queue_send_iov(queue
, sender
,
604 QEMU_NET_PACKET_FLAG_NONE
,
605 iov
, iovcnt
, sent_cb
);
609 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
611 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
614 /* find or alloc a new VLAN */
615 VLANState
*qemu_find_vlan(int id
, int allocate
)
619 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
620 if (vlan
->id
== id
) {
629 vlan
= g_malloc0(sizeof(VLANState
));
631 QTAILQ_INIT(&vlan
->clients
);
633 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
634 qemu_vlan_deliver_packet_iov
,
637 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
642 VLANClientState
*qemu_find_netdev(const char *id
)
646 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
647 if (vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
)
649 if (!strcmp(vc
->name
, id
)) {
657 static int nic_get_free_idx(void)
661 for (index
= 0; index
< MAX_NICS
; index
++)
662 if (!nd_table
[index
].used
)
667 int qemu_show_nic_models(const char *arg
, const char *const *models
)
671 if (!arg
|| strcmp(arg
, "?"))
674 fprintf(stderr
, "qemu: Supported NIC models: ");
675 for (i
= 0 ; models
[i
]; i
++)
676 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
680 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
682 const char *models
[2];
687 if (qemu_show_nic_models(nd
->model
, models
))
689 if (qemu_find_nic_model(nd
, models
, model
) < 0)
693 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
694 const char *default_model
)
699 nd
->model
= g_strdup(default_model
);
701 for (i
= 0 ; models
[i
]; i
++) {
702 if (strcmp(nd
->model
, models
[i
]) == 0)
706 error_report("Unsupported NIC model: %s", nd
->model
);
710 int net_handle_fd_param(Monitor
*mon
, const char *param
)
714 if (!qemu_isdigit(param
[0]) && mon
) {
716 fd
= monitor_get_fd(mon
, param
);
718 error_report("No file descriptor named %s found", param
);
722 fd
= qemu_parse_fd(param
);
728 static int net_init_nic(const NetClientOptions
*opts
, const char *name
,
729 VLANClientState
*peer
)
733 const NetLegacyNicOptions
*nic
;
735 assert(opts
->kind
== NET_CLIENT_OPTIONS_KIND_NIC
);
738 idx
= nic_get_free_idx();
739 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
740 error_report("Too Many NICs");
746 memset(nd
, 0, sizeof(*nd
));
748 if (nic
->has_netdev
) {
749 nd
->netdev
= qemu_find_netdev(nic
->netdev
);
751 error_report("netdev '%s' not found", nic
->netdev
);
759 nd
->name
= g_strdup(name
);
761 if (nic
->has_model
) {
762 nd
->model
= g_strdup(nic
->model
);
765 nd
->devaddr
= g_strdup(nic
->addr
);
768 if (nic
->has_macaddr
&&
769 net_parse_macaddr(nd
->macaddr
.a
, nic
->macaddr
) < 0) {
770 error_report("invalid syntax for ethernet address");
773 qemu_macaddr_default_if_unset(&nd
->macaddr
);
775 if (nic
->has_vectors
) {
776 if (nic
->vectors
> 0x7ffffff) {
777 error_report("invalid # of vectors: %"PRIu32
, nic
->vectors
);
780 nd
->nvectors
= nic
->vectors
;
782 nd
->nvectors
= DEV_NVECTORS_UNSPECIFIED
;
792 static int (* const net_client_init_fun
[NET_CLIENT_OPTIONS_KIND_MAX
])(
793 const NetClientOptions
*opts
,
795 VLANClientState
*peer
) = {
796 [NET_CLIENT_OPTIONS_KIND_NIC
] = net_init_nic
,
798 [NET_CLIENT_OPTIONS_KIND_USER
] = net_init_slirp
,
800 [NET_CLIENT_OPTIONS_KIND_TAP
] = net_init_tap
,
801 [NET_CLIENT_OPTIONS_KIND_SOCKET
] = net_init_socket
,
803 [NET_CLIENT_OPTIONS_KIND_VDE
] = net_init_vde
,
805 [NET_CLIENT_OPTIONS_KIND_DUMP
] = net_init_dump
,
806 #ifdef CONFIG_NET_BRIDGE
807 [NET_CLIENT_OPTIONS_KIND_BRIDGE
] = net_init_bridge
,
809 [NET_CLIENT_OPTIONS_KIND_HUBPORT
] = net_init_hubport
,
813 static int net_client_init1(const void *object
, int is_netdev
, Error
**errp
)
816 const Netdev
*netdev
;
817 const NetLegacy
*net
;
819 const NetClientOptions
*opts
;
824 opts
= u
.netdev
->opts
;
827 switch (opts
->kind
) {
829 case NET_CLIENT_OPTIONS_KIND_USER
:
831 case NET_CLIENT_OPTIONS_KIND_TAP
:
832 case NET_CLIENT_OPTIONS_KIND_SOCKET
:
834 case NET_CLIENT_OPTIONS_KIND_VDE
:
836 #ifdef CONFIG_NET_BRIDGE
837 case NET_CLIENT_OPTIONS_KIND_BRIDGE
:
839 case NET_CLIENT_OPTIONS_KIND_HUBPORT
:
843 error_set(errp
, QERR_INVALID_PARAMETER_VALUE
, "type",
844 "a netdev backend type");
850 /* missing optional values have been initialized to "all bits zero" */
851 name
= u
.net
->has_id
? u
.net
->id
: u
.net
->name
;
854 if (net_client_init_fun
[opts
->kind
]) {
855 VLANClientState
*peer
= NULL
;
857 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
860 (opts
->kind
!= NET_CLIENT_OPTIONS_KIND_NIC
||
861 !opts
->nic
->has_netdev
)) {
862 peer
= net_hub_add_port(u
.net
->has_vlan
? u
.net
->vlan
: 0, NULL
);
865 if (net_client_init_fun
[opts
->kind
](opts
, name
, peer
) < 0) {
866 /* TODO push error reporting into init() methods */
867 error_set(errp
, QERR_DEVICE_INIT_FAILED
,
868 NetClientOptionsKind_lookup
[opts
->kind
]);
876 static void net_visit(Visitor
*v
, int is_netdev
, void **object
, Error
**errp
)
879 visit_type_Netdev(v
, (Netdev
**)object
, NULL
, errp
);
881 visit_type_NetLegacy(v
, (NetLegacy
**)object
, NULL
, errp
);
886 int net_client_init(QemuOpts
*opts
, int is_netdev
, Error
**errp
)
893 OptsVisitor
*ov
= opts_visitor_new(opts
);
895 net_visit(opts_get_visitor(ov
), is_netdev
, &object
, &err
);
896 opts_visitor_cleanup(ov
);
900 ret
= net_client_init1(object
, is_netdev
, &err
);
904 QapiDeallocVisitor
*dv
= qapi_dealloc_visitor_new();
906 net_visit(qapi_dealloc_get_visitor(dv
), is_netdev
, &object
, NULL
);
907 qapi_dealloc_visitor_cleanup(dv
);
910 error_propagate(errp
, err
);
915 static int net_host_check_device(const char *device
)
918 const char *valid_param_list
[] = { "tap", "socket", "dump"
919 #ifdef CONFIG_NET_BRIDGE
929 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
930 if (!strncmp(valid_param_list
[i
], device
,
931 strlen(valid_param_list
[i
])))
938 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
940 const char *device
= qdict_get_str(qdict
, "device");
941 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
942 Error
*local_err
= NULL
;
945 if (!net_host_check_device(device
)) {
946 monitor_printf(mon
, "invalid host network device %s\n", device
);
950 opts
= qemu_opts_parse(qemu_find_opts("net"), opts_str
? opts_str
: "", 0);
955 qemu_opt_set(opts
, "type", device
);
957 net_client_init(opts
, 0, &local_err
);
958 if (error_is_set(&local_err
)) {
959 qerror_report_err(local_err
);
960 error_free(local_err
);
961 monitor_printf(mon
, "adding host network device %s failed\n", device
);
965 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
968 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
969 const char *device
= qdict_get_str(qdict
, "device");
971 vc
= net_hub_find_client_by_name(vlan_id
, device
);
975 if (!net_host_check_device(vc
->model
)) {
976 monitor_printf(mon
, "invalid host network device %s\n", device
);
979 qemu_del_vlan_client(vc
);
982 void netdev_add(QemuOpts
*opts
, Error
**errp
)
984 net_client_init(opts
, 1, errp
);
987 int qmp_netdev_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret
)
989 Error
*local_err
= NULL
;
990 QemuOptsList
*opts_list
;
993 opts_list
= qemu_find_opts_err("netdev", &local_err
);
994 if (error_is_set(&local_err
)) {
998 opts
= qemu_opts_from_qdict(opts_list
, qdict
, &local_err
);
999 if (error_is_set(&local_err
)) {
1003 netdev_add(opts
, &local_err
);
1004 if (error_is_set(&local_err
)) {
1005 qemu_opts_del(opts
);
1012 qerror_report_err(local_err
);
1013 error_free(local_err
);
1017 void qmp_netdev_del(const char *id
, Error
**errp
)
1019 VLANClientState
*vc
;
1021 vc
= qemu_find_netdev(id
);
1023 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
1027 qemu_del_vlan_client(vc
);
1028 qemu_opts_del(qemu_opts_find(qemu_find_opts_err("netdev", errp
), id
));
1031 static void print_net_client(Monitor
*mon
, VLANClientState
*vc
)
1033 monitor_printf(mon
, "%s: type=%s,%s\n", vc
->name
,
1034 NetClientOptionsKind_lookup
[vc
->info
->type
], vc
->info_str
);
1037 void do_info_network(Monitor
*mon
)
1040 VLANClientState
*vc
, *peer
;
1041 NetClientOptionsKind type
;
1043 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1044 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
1046 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
1047 monitor_printf(mon
, " ");
1048 print_net_client(mon
, vc
);
1051 monitor_printf(mon
, "Devices not on any VLAN:\n");
1052 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1054 type
= vc
->info
->type
;
1055 if (!peer
|| type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
1056 monitor_printf(mon
, " ");
1057 print_net_client(mon
, vc
);
1058 } /* else it's a netdev connected to a NIC, printed with the NIC */
1059 if (peer
&& type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
1060 monitor_printf(mon
, " \\ ");
1061 print_net_client(mon
, peer
);
1067 void qmp_set_link(const char *name
, bool up
, Error
**errp
)
1070 VLANClientState
*vc
= NULL
;
1072 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1073 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
1074 if (strcmp(vc
->name
, name
) == 0) {
1079 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1080 if (!strcmp(vc
->name
, name
)) {
1087 error_set(errp
, QERR_DEVICE_NOT_FOUND
, name
);
1091 vc
->link_down
= !up
;
1093 if (vc
->info
->link_status_changed
) {
1094 vc
->info
->link_status_changed(vc
);
1097 /* Notify peer. Don't update peer link status: this makes it possible to
1098 * disconnect from host network without notifying the guest.
1099 * FIXME: is disconnected link status change operation useful?
1101 * Current behaviour is compatible with qemu vlans where there could be
1102 * multiple clients that can still communicate with each other in
1103 * disconnected mode. For now maintain this compatibility. */
1104 if (vc
->peer
&& vc
->peer
->info
->link_status_changed
) {
1105 vc
->peer
->info
->link_status_changed(vc
->peer
);
1109 void net_cleanup(void)
1112 VLANClientState
*vc
, *next_vc
;
1114 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1115 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
1116 qemu_del_vlan_client(vc
);
1120 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
1121 qemu_del_vlan_client(vc
);
1125 void net_check_clients(void)
1127 VLANClientState
*vc
;
1130 /* Don't warn about the default network setup that you get if
1131 * no command line -net or -netdev options are specified. There
1132 * are two cases that we would otherwise complain about:
1133 * (1) board doesn't support a NIC but the implicit "-net nic"
1135 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1136 * sets up a nic that isn't connected to anything.
1142 net_hub_check_clients();
1144 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1146 fprintf(stderr
, "Warning: %s %s has no peer\n",
1147 vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
? "nic" : "netdev",
1152 /* Check that all NICs requested via -net nic actually got created.
1153 * NICs created via -device don't need to be checked here because
1154 * they are always instantiated.
1156 for (i
= 0; i
< MAX_NICS
; i
++) {
1157 NICInfo
*nd
= &nd_table
[i
];
1158 if (nd
->used
&& !nd
->instantiated
) {
1159 fprintf(stderr
, "Warning: requested NIC (%s, model %s) "
1160 "was not created (not supported by this machine?)\n",
1161 nd
->name
? nd
->name
: "anonymous",
1162 nd
->model
? nd
->model
: "unspecified");
1167 static int net_init_client(QemuOpts
*opts
, void *dummy
)
1169 Error
*local_err
= NULL
;
1171 net_client_init(opts
, 0, &local_err
);
1172 if (error_is_set(&local_err
)) {
1173 qerror_report_err(local_err
);
1174 error_free(local_err
);
1181 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
1183 Error
*local_err
= NULL
;
1186 ret
= net_client_init(opts
, 1, &local_err
);
1187 if (error_is_set(&local_err
)) {
1188 qerror_report_err(local_err
);
1189 error_free(local_err
);
1196 int net_init_clients(void)
1198 QemuOptsList
*net
= qemu_find_opts("net");
1201 /* if no clients, we use a default config */
1202 qemu_opts_set(net
, NULL
, "type", "nic");
1204 qemu_opts_set(net
, NULL
, "type", "user");
1208 QTAILQ_INIT(&vlans
);
1209 QTAILQ_INIT(&non_vlan_clients
);
1211 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev
, NULL
, 1) == -1)
1214 if (qemu_opts_foreach(net
, net_init_client
, NULL
, 1) == -1) {
1221 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
1223 #if defined(CONFIG_SLIRP)
1225 if (net_slirp_parse_legacy(opts_list
, optarg
, &ret
)) {
1230 if (!qemu_opts_parse(opts_list
, optarg
, 1)) {
1240 unsigned compute_mcast_idx(const uint8_t *ep
)
1247 for (i
= 0; i
< 6; i
++) {
1249 for (j
= 0; j
< 8; j
++) {
1250 carry
= ((crc
& 0x80000000L
) ? 1 : 0) ^ (b
& 0x01);
1254 crc
= ((crc
^ POLYNOMIAL
) | carry
);