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(, VLANClientState
) non_vlan_clients
;
54 /***********************************************************/
55 /* network device redirectors */
57 #if defined(DEBUG_NET)
58 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
62 for(i
=0;i
<size
;i
+=16) {
66 fprintf(f
, "%08x ", i
);
69 fprintf(f
, " %02x", buf
[i
+j
]);
76 if (c
< ' ' || c
> '~')
85 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
96 if (len
> buf_size
- 1)
105 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
113 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
115 saddr
->sin_family
= AF_INET
;
116 if (buf
[0] == '\0') {
117 saddr
->sin_addr
.s_addr
= 0;
119 if (qemu_isdigit(buf
[0])) {
120 if (!inet_aton(buf
, &saddr
->sin_addr
))
123 if ((he
= gethostbyname(buf
)) == NULL
)
125 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
128 port
= strtol(p
, (char **)&r
, 0);
131 saddr
->sin_port
= htons(port
);
135 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
137 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
138 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
140 macaddr
[0], macaddr
[1], macaddr
[2],
141 macaddr
[3], macaddr
[4], macaddr
[5]);
144 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
146 static int index
= 0;
147 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
149 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
151 macaddr
->a
[0] = 0x52;
152 macaddr
->a
[1] = 0x54;
153 macaddr
->a
[2] = 0x00;
154 macaddr
->a
[3] = 0x12;
155 macaddr
->a
[4] = 0x34;
156 macaddr
->a
[5] = 0x56 + index
++;
160 * Generate a name for net client
162 * Only net clients created with the legacy -net option need this. Naming is
163 * mandatory for net clients created with -netdev.
165 static char *assign_name(VLANClientState
*vc1
, const char *model
)
171 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
175 /* For compatibility only bump id for net clients on a vlan */
176 if (strcmp(vc
->model
, model
) == 0 &&
177 net_hub_id_for_client(vc
, NULL
) == 0) {
182 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
184 return g_strdup(buf
);
187 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
192 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
194 const struct iovec
*iov
,
198 VLANClientState
*qemu_new_net_client(NetClientInfo
*info
,
199 VLANClientState
*peer
,
205 assert(info
->size
>= sizeof(VLANClientState
));
207 vc
= g_malloc0(info
->size
);
210 vc
->model
= g_strdup(model
);
212 vc
->name
= g_strdup(name
);
214 vc
->name
= assign_name(vc
, model
);
222 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
224 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
225 qemu_deliver_packet_iov
,
231 NICState
*qemu_new_nic(NetClientInfo
*info
,
240 assert(info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
);
241 assert(info
->size
>= sizeof(NICState
));
243 nc
= qemu_new_net_client(info
, conf
->peer
, model
, name
);
245 nic
= DO_UPCAST(NICState
, nc
, nc
);
247 nic
->opaque
= opaque
;
252 static void qemu_cleanup_vlan_client(VLANClientState
*vc
)
254 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
)
263 if (vc
->send_queue
) {
264 qemu_del_net_queue(vc
->send_queue
);
267 vc
->peer
->peer
= NULL
;
274 void qemu_del_vlan_client(VLANClientState
*vc
)
276 /* If there is a peer NIC, delete and cleanup client, but do not free. */
277 if (vc
->peer
&& vc
->peer
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
278 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
->peer
);
279 if (nic
->peer_deleted
) {
282 nic
->peer_deleted
= true;
283 /* Let NIC know peer is gone. */
284 vc
->peer
->link_down
= true;
285 if (vc
->peer
->info
->link_status_changed
) {
286 vc
->peer
->info
->link_status_changed(vc
->peer
);
288 qemu_cleanup_vlan_client(vc
);
292 /* If this is a peer NIC and peer has already been deleted, free it now. */
293 if (vc
->peer
&& vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
294 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
);
295 if (nic
->peer_deleted
) {
296 qemu_free_vlan_client(vc
->peer
);
300 qemu_cleanup_vlan_client(vc
);
301 qemu_free_vlan_client(vc
);
304 void qemu_foreach_nic(qemu_nic_foreach func
, void *opaque
)
308 QTAILQ_FOREACH(nc
, &non_vlan_clients
, next
) {
309 if (nc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
310 func(DO_UPCAST(NICState
, nc
, nc
), opaque
);
315 int qemu_can_send_packet(VLANClientState
*sender
)
321 if (sender
->peer
->receive_disabled
) {
323 } else if (sender
->peer
->info
->can_receive
&&
324 !sender
->peer
->info
->can_receive(sender
->peer
)) {
330 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
336 VLANClientState
*vc
= opaque
;
343 if (vc
->receive_disabled
) {
347 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->info
->receive_raw
) {
348 ret
= vc
->info
->receive_raw(vc
, data
, size
);
350 ret
= vc
->info
->receive(vc
, data
, size
);
354 vc
->receive_disabled
= 1;
360 void qemu_purge_queued_packets(VLANClientState
*vc
)
366 qemu_net_queue_purge(vc
->peer
->send_queue
, vc
);
369 void qemu_flush_queued_packets(VLANClientState
*vc
)
371 vc
->receive_disabled
= 0;
373 qemu_net_queue_flush(vc
->send_queue
);
376 static ssize_t
qemu_send_packet_async_with_flags(VLANClientState
*sender
,
378 const uint8_t *buf
, int size
,
379 NetPacketSent
*sent_cb
)
384 printf("qemu_send_packet_async:\n");
385 hex_dump(stdout
, buf
, size
);
388 if (sender
->link_down
|| !sender
->peer
) {
392 queue
= sender
->peer
->send_queue
;
394 return qemu_net_queue_send(queue
, sender
, flags
, buf
, size
, sent_cb
);
397 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
398 const uint8_t *buf
, int size
,
399 NetPacketSent
*sent_cb
)
401 return qemu_send_packet_async_with_flags(sender
, QEMU_NET_PACKET_FLAG_NONE
,
405 void qemu_send_packet(VLANClientState
*vc
, const uint8_t *buf
, int size
)
407 qemu_send_packet_async(vc
, buf
, size
, NULL
);
410 ssize_t
qemu_send_packet_raw(VLANClientState
*vc
, const uint8_t *buf
, int size
)
412 return qemu_send_packet_async_with_flags(vc
, QEMU_NET_PACKET_FLAG_RAW
,
416 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
419 uint8_t buffer
[4096];
422 offset
= iov_to_buf(iov
, iovcnt
, 0, buffer
, sizeof(buffer
));
424 return vc
->info
->receive(vc
, buffer
, offset
);
427 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
429 const struct iovec
*iov
,
433 VLANClientState
*vc
= opaque
;
436 return iov_size(iov
, iovcnt
);
439 if (vc
->info
->receive_iov
) {
440 return vc
->info
->receive_iov(vc
, iov
, iovcnt
);
442 return vc_sendv_compat(vc
, iov
, iovcnt
);
446 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
447 const struct iovec
*iov
, int iovcnt
,
448 NetPacketSent
*sent_cb
)
452 if (sender
->link_down
|| !sender
->peer
) {
453 return iov_size(iov
, iovcnt
);
456 queue
= sender
->peer
->send_queue
;
458 return qemu_net_queue_send_iov(queue
, sender
,
459 QEMU_NET_PACKET_FLAG_NONE
,
460 iov
, iovcnt
, sent_cb
);
464 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
466 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
469 VLANClientState
*qemu_find_netdev(const char *id
)
473 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
474 if (vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
)
476 if (!strcmp(vc
->name
, id
)) {
484 static int nic_get_free_idx(void)
488 for (index
= 0; index
< MAX_NICS
; index
++)
489 if (!nd_table
[index
].used
)
494 int qemu_show_nic_models(const char *arg
, const char *const *models
)
498 if (!arg
|| strcmp(arg
, "?"))
501 fprintf(stderr
, "qemu: Supported NIC models: ");
502 for (i
= 0 ; models
[i
]; i
++)
503 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
507 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
509 const char *models
[2];
514 if (qemu_show_nic_models(nd
->model
, models
))
516 if (qemu_find_nic_model(nd
, models
, model
) < 0)
520 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
521 const char *default_model
)
526 nd
->model
= g_strdup(default_model
);
528 for (i
= 0 ; models
[i
]; i
++) {
529 if (strcmp(nd
->model
, models
[i
]) == 0)
533 error_report("Unsupported NIC model: %s", nd
->model
);
537 int net_handle_fd_param(Monitor
*mon
, const char *param
)
541 if (!qemu_isdigit(param
[0]) && mon
) {
543 fd
= monitor_get_fd(mon
, param
);
545 error_report("No file descriptor named %s found", param
);
549 fd
= qemu_parse_fd(param
);
555 static int net_init_nic(const NetClientOptions
*opts
, const char *name
,
556 VLANClientState
*peer
)
560 const NetLegacyNicOptions
*nic
;
562 assert(opts
->kind
== NET_CLIENT_OPTIONS_KIND_NIC
);
565 idx
= nic_get_free_idx();
566 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
567 error_report("Too Many NICs");
573 memset(nd
, 0, sizeof(*nd
));
575 if (nic
->has_netdev
) {
576 nd
->netdev
= qemu_find_netdev(nic
->netdev
);
578 error_report("netdev '%s' not found", nic
->netdev
);
586 nd
->name
= g_strdup(name
);
588 if (nic
->has_model
) {
589 nd
->model
= g_strdup(nic
->model
);
592 nd
->devaddr
= g_strdup(nic
->addr
);
595 if (nic
->has_macaddr
&&
596 net_parse_macaddr(nd
->macaddr
.a
, nic
->macaddr
) < 0) {
597 error_report("invalid syntax for ethernet address");
600 qemu_macaddr_default_if_unset(&nd
->macaddr
);
602 if (nic
->has_vectors
) {
603 if (nic
->vectors
> 0x7ffffff) {
604 error_report("invalid # of vectors: %"PRIu32
, nic
->vectors
);
607 nd
->nvectors
= nic
->vectors
;
609 nd
->nvectors
= DEV_NVECTORS_UNSPECIFIED
;
619 static int (* const net_client_init_fun
[NET_CLIENT_OPTIONS_KIND_MAX
])(
620 const NetClientOptions
*opts
,
622 VLANClientState
*peer
) = {
623 [NET_CLIENT_OPTIONS_KIND_NIC
] = net_init_nic
,
625 [NET_CLIENT_OPTIONS_KIND_USER
] = net_init_slirp
,
627 [NET_CLIENT_OPTIONS_KIND_TAP
] = net_init_tap
,
628 [NET_CLIENT_OPTIONS_KIND_SOCKET
] = net_init_socket
,
630 [NET_CLIENT_OPTIONS_KIND_VDE
] = net_init_vde
,
632 [NET_CLIENT_OPTIONS_KIND_DUMP
] = net_init_dump
,
633 #ifdef CONFIG_NET_BRIDGE
634 [NET_CLIENT_OPTIONS_KIND_BRIDGE
] = net_init_bridge
,
636 [NET_CLIENT_OPTIONS_KIND_HUBPORT
] = net_init_hubport
,
640 static int net_client_init1(const void *object
, int is_netdev
, Error
**errp
)
643 const Netdev
*netdev
;
644 const NetLegacy
*net
;
646 const NetClientOptions
*opts
;
651 opts
= u
.netdev
->opts
;
654 switch (opts
->kind
) {
656 case NET_CLIENT_OPTIONS_KIND_USER
:
658 case NET_CLIENT_OPTIONS_KIND_TAP
:
659 case NET_CLIENT_OPTIONS_KIND_SOCKET
:
661 case NET_CLIENT_OPTIONS_KIND_VDE
:
663 #ifdef CONFIG_NET_BRIDGE
664 case NET_CLIENT_OPTIONS_KIND_BRIDGE
:
666 case NET_CLIENT_OPTIONS_KIND_HUBPORT
:
670 error_set(errp
, QERR_INVALID_PARAMETER_VALUE
, "type",
671 "a netdev backend type");
677 /* missing optional values have been initialized to "all bits zero" */
678 name
= u
.net
->has_id
? u
.net
->id
: u
.net
->name
;
681 if (net_client_init_fun
[opts
->kind
]) {
682 VLANClientState
*peer
= NULL
;
684 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
687 (opts
->kind
!= NET_CLIENT_OPTIONS_KIND_NIC
||
688 !opts
->nic
->has_netdev
)) {
689 peer
= net_hub_add_port(u
.net
->has_vlan
? u
.net
->vlan
: 0, NULL
);
692 if (net_client_init_fun
[opts
->kind
](opts
, name
, peer
) < 0) {
693 /* TODO push error reporting into init() methods */
694 error_set(errp
, QERR_DEVICE_INIT_FAILED
,
695 NetClientOptionsKind_lookup
[opts
->kind
]);
703 static void net_visit(Visitor
*v
, int is_netdev
, void **object
, Error
**errp
)
706 visit_type_Netdev(v
, (Netdev
**)object
, NULL
, errp
);
708 visit_type_NetLegacy(v
, (NetLegacy
**)object
, NULL
, errp
);
713 int net_client_init(QemuOpts
*opts
, int is_netdev
, Error
**errp
)
720 OptsVisitor
*ov
= opts_visitor_new(opts
);
722 net_visit(opts_get_visitor(ov
), is_netdev
, &object
, &err
);
723 opts_visitor_cleanup(ov
);
727 ret
= net_client_init1(object
, is_netdev
, &err
);
731 QapiDeallocVisitor
*dv
= qapi_dealloc_visitor_new();
733 net_visit(qapi_dealloc_get_visitor(dv
), is_netdev
, &object
, NULL
);
734 qapi_dealloc_visitor_cleanup(dv
);
737 error_propagate(errp
, err
);
742 static int net_host_check_device(const char *device
)
745 const char *valid_param_list
[] = { "tap", "socket", "dump"
746 #ifdef CONFIG_NET_BRIDGE
756 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
757 if (!strncmp(valid_param_list
[i
], device
,
758 strlen(valid_param_list
[i
])))
765 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
767 const char *device
= qdict_get_str(qdict
, "device");
768 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
769 Error
*local_err
= NULL
;
772 if (!net_host_check_device(device
)) {
773 monitor_printf(mon
, "invalid host network device %s\n", device
);
777 opts
= qemu_opts_parse(qemu_find_opts("net"), opts_str
? opts_str
: "", 0);
782 qemu_opt_set(opts
, "type", device
);
784 net_client_init(opts
, 0, &local_err
);
785 if (error_is_set(&local_err
)) {
786 qerror_report_err(local_err
);
787 error_free(local_err
);
788 monitor_printf(mon
, "adding host network device %s failed\n", device
);
792 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
795 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
796 const char *device
= qdict_get_str(qdict
, "device");
798 vc
= net_hub_find_client_by_name(vlan_id
, device
);
802 if (!net_host_check_device(vc
->model
)) {
803 monitor_printf(mon
, "invalid host network device %s\n", device
);
806 qemu_del_vlan_client(vc
);
809 void netdev_add(QemuOpts
*opts
, Error
**errp
)
811 net_client_init(opts
, 1, errp
);
814 int qmp_netdev_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret
)
816 Error
*local_err
= NULL
;
817 QemuOptsList
*opts_list
;
820 opts_list
= qemu_find_opts_err("netdev", &local_err
);
821 if (error_is_set(&local_err
)) {
825 opts
= qemu_opts_from_qdict(opts_list
, qdict
, &local_err
);
826 if (error_is_set(&local_err
)) {
830 netdev_add(opts
, &local_err
);
831 if (error_is_set(&local_err
)) {
839 qerror_report_err(local_err
);
840 error_free(local_err
);
844 void qmp_netdev_del(const char *id
, Error
**errp
)
848 vc
= qemu_find_netdev(id
);
850 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
854 qemu_del_vlan_client(vc
);
855 qemu_opts_del(qemu_opts_find(qemu_find_opts_err("netdev", errp
), id
));
858 static void print_net_client(Monitor
*mon
, VLANClientState
*vc
)
860 monitor_printf(mon
, "%s: type=%s,%s\n", vc
->name
,
861 NetClientOptionsKind_lookup
[vc
->info
->type
], vc
->info_str
);
864 void do_info_network(Monitor
*mon
)
866 VLANClientState
*vc
, *peer
;
867 NetClientOptionsKind type
;
869 monitor_printf(mon
, "Devices not on any VLAN:\n");
870 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
872 type
= vc
->info
->type
;
873 if (!peer
|| type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
874 monitor_printf(mon
, " ");
875 print_net_client(mon
, vc
);
876 } /* else it's a netdev connected to a NIC, printed with the NIC */
877 if (peer
&& type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
878 monitor_printf(mon
, " \\ ");
879 print_net_client(mon
, peer
);
885 void qmp_set_link(const char *name
, bool up
, Error
**errp
)
887 VLANClientState
*vc
= NULL
;
889 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
890 if (!strcmp(vc
->name
, name
)) {
897 error_set(errp
, QERR_DEVICE_NOT_FOUND
, name
);
903 if (vc
->info
->link_status_changed
) {
904 vc
->info
->link_status_changed(vc
);
907 /* Notify peer. Don't update peer link status: this makes it possible to
908 * disconnect from host network without notifying the guest.
909 * FIXME: is disconnected link status change operation useful?
911 * Current behaviour is compatible with qemu vlans where there could be
912 * multiple clients that can still communicate with each other in
913 * disconnected mode. For now maintain this compatibility. */
914 if (vc
->peer
&& vc
->peer
->info
->link_status_changed
) {
915 vc
->peer
->info
->link_status_changed(vc
->peer
);
919 void net_cleanup(void)
921 VLANClientState
*vc
, *next_vc
;
923 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
924 qemu_del_vlan_client(vc
);
928 void net_check_clients(void)
933 /* Don't warn about the default network setup that you get if
934 * no command line -net or -netdev options are specified. There
935 * are two cases that we would otherwise complain about:
936 * (1) board doesn't support a NIC but the implicit "-net nic"
938 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
939 * sets up a nic that isn't connected to anything.
945 net_hub_check_clients();
947 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
949 fprintf(stderr
, "Warning: %s %s has no peer\n",
950 vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
? "nic" : "netdev",
955 /* Check that all NICs requested via -net nic actually got created.
956 * NICs created via -device don't need to be checked here because
957 * they are always instantiated.
959 for (i
= 0; i
< MAX_NICS
; i
++) {
960 NICInfo
*nd
= &nd_table
[i
];
961 if (nd
->used
&& !nd
->instantiated
) {
962 fprintf(stderr
, "Warning: requested NIC (%s, model %s) "
963 "was not created (not supported by this machine?)\n",
964 nd
->name
? nd
->name
: "anonymous",
965 nd
->model
? nd
->model
: "unspecified");
970 static int net_init_client(QemuOpts
*opts
, void *dummy
)
972 Error
*local_err
= NULL
;
974 net_client_init(opts
, 0, &local_err
);
975 if (error_is_set(&local_err
)) {
976 qerror_report_err(local_err
);
977 error_free(local_err
);
984 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
986 Error
*local_err
= NULL
;
989 ret
= net_client_init(opts
, 1, &local_err
);
990 if (error_is_set(&local_err
)) {
991 qerror_report_err(local_err
);
992 error_free(local_err
);
999 int net_init_clients(void)
1001 QemuOptsList
*net
= qemu_find_opts("net");
1004 /* if no clients, we use a default config */
1005 qemu_opts_set(net
, NULL
, "type", "nic");
1007 qemu_opts_set(net
, NULL
, "type", "user");
1011 QTAILQ_INIT(&non_vlan_clients
);
1013 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev
, NULL
, 1) == -1)
1016 if (qemu_opts_foreach(net
, net_init_client
, NULL
, 1) == -1) {
1023 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
1025 #if defined(CONFIG_SLIRP)
1027 if (net_slirp_parse_legacy(opts_list
, optarg
, &ret
)) {
1032 if (!qemu_opts_parse(opts_list
, optarg
, 1)) {
1042 unsigned compute_mcast_idx(const uint8_t *ep
)
1049 for (i
= 0; i
< 6; i
++) {
1051 for (j
= 0; j
< 8; j
++) {
1052 carry
= ((crc
& 0x80000000L
) ? 1 : 0) ^ (b
& 0x01);
1056 crc
= ((crc
^ POLYNOMIAL
) | carry
);