net/vmnet-host.c

   1 /*
   2  * vmnet-host.c
   3  *
   4  * Copyright(c) 2022 Vladislav Yaroshchuk <vladislav.yaroshchuk@jetbrains.com>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "qemu/uuid.h"
  13 #include "qapi/qapi-types-net.h"
  14 #include "qapi/error.h"
  15 #include "clients.h"
  16 #include "vmnet_int.h"
  17
  18 #include <vmnet/vmnet.h>
  19
  20
  21 static bool validate_options(const Netdev *netdev, Error **errp)
  22 {
  23     const NetdevVmnetHostOptions *options = &(netdev->u.vmnet_host);
  24
  25 #if defined(MAC_OS_VERSION_11_0) && \
  26     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_VERSION_11_0
  27
  28     QemuUUID net_uuid;
  29     if (options->has_net_uuid &&
  30         qemu_uuid_parse(options->net_uuid, &net_uuid) < 0) {
  31         error_setg(errp, "Invalid UUID provided in 'net-uuid'");
  32         return false;
  33     }
  34 #else
  35     if (options->has_isolated) {
  36         error_setg(errp,
  37                    "vmnet-host.isolated feature is "
  38                    "unavailable: outdated vmnet.framework API");
  39         return false;
  40     }
  41
  42     if (options->has_net_uuid) {
  43         error_setg(errp,
  44                    "vmnet-host.net-uuid feature is "
  45                    "unavailable: outdated vmnet.framework API");
  46         return false;
  47     }
  48 #endif
  49
  50     if ((options->has_start_address ||
  51          options->has_end_address ||
  52          options->has_subnet_mask) &&
  53         !(options->has_start_address &&
  54           options->has_end_address &&
  55           options->has_subnet_mask)) {
  56         error_setg(errp,
  57                    "'start-address', 'end-address', 'subnet-mask' "
  58                    "should be provided together");
  59         return false;
  60     }
  61
  62     return true;
  63 }
  64
  65 static xpc_object_t build_if_desc(const Netdev *netdev)
  66 {
  67     const NetdevVmnetHostOptions *options = &(netdev->u.vmnet_host);
  68     xpc_object_t if_desc = xpc_dictionary_create(NULL, NULL, 0);
  69
  70     xpc_dictionary_set_uint64(if_desc,
  71                               vmnet_operation_mode_key,
  72                               VMNET_HOST_MODE);
  73
  74 #if defined(MAC_OS_VERSION_11_0) && \
  75     MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_VERSION_11_0
  76
  77     xpc_dictionary_set_bool(if_desc,
  78                             vmnet_enable_isolation_key,
  79                             options->isolated);
  80
  81     QemuUUID net_uuid;
  82     if (options->has_net_uuid) {
  83         qemu_uuid_parse(options->net_uuid, &net_uuid);
  84         xpc_dictionary_set_uuid(if_desc,
  85                                 vmnet_network_identifier_key,
  86                                 net_uuid.data);
  87     }
  88 #endif
  89
  90     if (options->has_start_address) {
  91         xpc_dictionary_set_string(if_desc,
  92                                   vmnet_start_address_key,
  93                                   options->start_address);
  94         xpc_dictionary_set_string(if_desc,
  95                                   vmnet_end_address_key,
  96                                   options->end_address);
  97         xpc_dictionary_set_string(if_desc,
  98                                   vmnet_subnet_mask_key,
  99                                   options->subnet_mask);
 100     }
 101
 102     return if_desc;
 103 }
 104
 105 static NetClientInfo net_vmnet_host_info = {
 106     .type = NET_CLIENT_DRIVER_VMNET_HOST,
 107     .size = sizeof(VmnetState),
 108     .receive = vmnet_receive_common,
 109     .cleanup = vmnet_cleanup_common,
 110 };
 111
 112 int net_init_vmnet_host(const Netdev *netdev, const char *name,
 113                         NetClientState *peer, Error **errp)
 114 {
 115     NetClientState *nc = qemu_new_net_client(&net_vmnet_host_info,
 116                                              peer, "vmnet-host", name);
 117     xpc_object_t if_desc;
 118     int result = -1;
 119
 120     if (!validate_options(netdev, errp)) {
 121         return result;
 122     }
 123
 124     if_desc = build_if_desc(netdev);
 125     result = vmnet_if_create(nc, if_desc, errp);
 126     xpc_release(if_desc);
 127     return result;
 128 }