[PATCH v4 4/6] net/vmnet: implement host mode (vmnet-host)

[Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>]

Signed-off-by: Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
---
 net/vmnet-host.c | 99 +++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 93 insertions(+), 6 deletions(-)

diff --git a/net/vmnet-host.c b/net/vmnet-host.c
index 4a5ef99dc7..725675d0eb 100644
--- a/net/vmnet-host.c
+++ b/net/vmnet-host.c
@@ -9,16 +9,103 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/uuid.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>
 
+typedef struct VmnetHostState {
+  VmnetCommonState cs;
+  QemuUUID network_uuid;
+} VmnetHostState;
+
+static xpc_object_t create_if_desc(const Netdev *netdev,
+                                   NetClientState *nc,
+                                   Error **errp)
+{
+    const NetdevVmnetHostOptions *options = &(netdev->u.vmnet_host);
+    VmnetCommonState *cs = DO_UPCAST(VmnetCommonState, nc, nc);
+    VmnetHostState *hs = DO_UPCAST(VmnetHostState, cs, cs);
+
+    xpc_object_t if_desc = xpc_dictionary_create(NULL, NULL, 0);
+
+    xpc_dictionary_set_uint64(
+        if_desc,
+        vmnet_operation_mode_key,
+        VMNET_HOST_MODE
+    );
+
+    xpc_dictionary_set_bool(
+        if_desc,
+        vmnet_enable_isolation_key,
+        options->isolated
+    );
+
+    if (options->has_net_uuid) {
+        if (qemu_uuid_parse(options->net_uuid, &hs->network_uuid) < 0) {
+            error_setg(errp, "Invalid UUID provided in 'net-uuid'");
+        }
+
+        xpc_dictionary_set_uuid(
+            if_desc,
+            vmnet_network_identifier_key,
+            hs->network_uuid.data
+        );
+    }
+
+    if (options->has_dhcpstart ||
+        options->has_dhcpend ||
+        options->has_subnetmask) {
+
+        if (options->has_dhcpstart &&
+            options->has_dhcpend &&
+            options->has_subnetmask) {
+
+            if (options->has_net_uuid) {
+                error_setg(errp,
+                           "DHCP disabled for this interface "
+                           "because 'net-uuid' is provided");
+            }
+
+            xpc_dictionary_set_string(if_desc,
+                                      vmnet_start_address_key,
+                                      options->dhcpstart);
+            xpc_dictionary_set_string(if_desc,
+                                      vmnet_end_address_key,
+                                      options->dhcpend);
+            xpc_dictionary_set_string(if_desc,
+                                      vmnet_subnet_mask_key,
+                                      options->subnetmask);
+        } else {
+            error_setg(
+                errp,
+                "'dhcpstart', 'dhcpend', 'subnetmask' "
+                "should be provided together"
+            );
+        }
+    }
+
+    return if_desc;
+}
+
+static NetClientInfo net_vmnet_host_info = {
+    .type = NET_CLIENT_DRIVER_VMNET_HOST,
+    .size = sizeof(VmnetHostState),
+    .receive = vmnet_receive_common,
+    .cleanup = vmnet_cleanup_common,
+};
+
 int net_init_vmnet_host(const Netdev *netdev, const char *name,
-                        NetClientState *peer, Error **errp) {
-  error_setg(errp, "vmnet-host is not implemented yet");
-  return -1;
+                        NetClientState *peer, Error **errp)
+{
+    NetClientState *nc;
+    xpc_object_t if_desc;
+
+    nc = qemu_new_net_client(&net_vmnet_host_info,
+                             peer, "vmnet-host", name);
+    if_desc = create_if_desc(netdev, nc, errp);
+    return vmnet_if_create(nc, if_desc, errp, NULL);
 }
-- 
2.23.0