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net/vmnet: implement bridged mode (vmnet-bridged)

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Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Tested-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Vladislav Yaroshchuk <Vladislav.Yaroshchuk@jetbrains.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Vladislav Yaroshchuk 2022-03-17 20:28:37 +03:00 committed by Jason Wang
parent 5cfa643730
commit 2c313ae2a0
1 changed files with 132 additions and 5 deletions
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137
net/vmnet-bridged.m
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@ -10,16 +10,143 @@
#include "qemu/osdep.h"
#include "qapi/qapi-types-net.h"
#include "vmnet_int.h"
#include "clients.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "clients.h"
#include "vmnet_int.h"
#include <vmnet/vmnet.h>
static bool validate_ifname(const char *ifname)
{
xpc_object_t shared_if_list = vmnet_copy_shared_interface_list();
bool match = false;
if (!xpc_array_get_count(shared_if_list)) {
goto done;
}
match = !xpc_array_apply(
shared_if_list,
^bool(size_t index, xpc_object_t value) {
return strcmp(xpc_string_get_string_ptr(value), ifname) != 0;
});
done:
xpc_release(shared_if_list);
return match;
}
static char* get_valid_ifnames()
{
xpc_object_t shared_if_list = vmnet_copy_shared_interface_list();
__block char *if_list = NULL;
__block char *if_list_prev = NULL;
if (!xpc_array_get_count(shared_if_list)) {
goto done;
}
xpc_array_apply(
shared_if_list,
^bool(size_t index, xpc_object_t value) {
/* build list of strings like "en0 en1 en2 " */
if_list = g_strconcat(xpc_string_get_string_ptr(value),
" ",
if_list_prev,
NULL);
g_free(if_list_prev);
if_list_prev = if_list;
return true;
});
done:
xpc_release(shared_if_list);
return if_list;
}
static bool validate_options(const Netdev *netdev, Error **errp)
{
const NetdevVmnetBridgedOptions *options = &(netdev->u.vmnet_bridged);
char* if_list;
if (!validate_ifname(options->ifname)) {
if_list = get_valid_ifnames();
if (if_list) {
error_setg(errp,
"unsupported ifname '%s', expected one of [ %s]",
options->ifname,
if_list);
g_free(if_list);
} else {
error_setg(errp,
"unsupported ifname '%s', no supported "
"interfaces available",
options->ifname);
}
return false;
}
#if !defined(MAC_OS_VERSION_11_0) || \
MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_VERSION_11_0
if (options->has_isolated) {
error_setg(errp,
"vmnet-bridged.isolated feature is "
"unavailable: outdated vmnet.framework API");
return false;
}
#endif
return true;
}
static xpc_object_t build_if_desc(const Netdev *netdev)
{
const NetdevVmnetBridgedOptions *options = &(netdev->u.vmnet_bridged);
xpc_object_t if_desc = xpc_dictionary_create(NULL, NULL, 0);
xpc_dictionary_set_uint64(if_desc,
vmnet_operation_mode_key,
VMNET_BRIDGED_MODE
);
xpc_dictionary_set_string(if_desc,
vmnet_shared_interface_name_key,
options->ifname);
#if defined(MAC_OS_VERSION_11_0) && \
MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_VERSION_11_0
xpc_dictionary_set_bool(if_desc,
vmnet_enable_isolation_key,
options->isolated);
#endif
return if_desc;
}
static NetClientInfo net_vmnet_bridged_info = {
.type = NET_CLIENT_DRIVER_VMNET_BRIDGED,
.size = sizeof(VmnetState),
.receive = vmnet_receive_common,
.cleanup = vmnet_cleanup_common,
};
int net_init_vmnet_bridged(const Netdev *netdev, const char *name,
NetClientState *peer, Error **errp)
{
error_setg(errp, "vmnet-bridged is not implemented yet");
return -1;
NetClientState *nc = qemu_new_net_client(&net_vmnet_bridged_info,
peer, "vmnet-bridged", name);
xpc_object_t if_desc;
int result = -1;
if (!validate_options(netdev, errp)) {
return result;
}
if_desc = build_if_desc(netdev);
result = vmnet_if_create(nc, if_desc, errp);
xpc_release(if_desc);
return result;
}