[PATCH v2 5/6] net/vmnet: implement bridged mode (vmnet-bridged)

[Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>]

Signed-off-by: Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
---
 net/meson.build     |   2 +-
 net/vmnet-bridged.c |  25 ---------
 net/vmnet-bridged.m | 123 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 124 insertions(+), 26 deletions(-)
 delete mode 100644 net/vmnet-bridged.c
 create mode 100644 net/vmnet-bridged.m

diff --git a/net/meson.build b/net/meson.build
index 1df498ad99..495419e964 100644
--- a/net/meson.build
+++ b/net/meson.build
@@ -40,7 +40,7 @@ softmmu_ss.add(when: 'CONFIG_VHOST_NET_VDPA', if_true: files('vhost-vdpa.c'))
 
 vmnet_files = files(
   'vmnet-common.m',
-  'vmnet-bridged.c',
+  'vmnet-bridged.m',
   'vmnet-host.c',
   'vmnet-shared.c'
 )
diff --git a/net/vmnet-bridged.c b/net/vmnet-bridged.c
deleted file mode 100644
index 9226c42353..0000000000
--- a/net/vmnet-bridged.c
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * vmnet-bridged.c
- *
- * Copyright(c) 2021 Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-
-#include "qemu/osdep.h"
-#include "qapi-types-net.h"
-#include "vmnet_int.h"
-#include "clients.h"
-#include "qemu/error-report.h"
-#include "qapi/error.h"
-
-#include <vmnet/vmnet.h>
-
-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;
-}
diff --git a/net/vmnet-bridged.m b/net/vmnet-bridged.m
new file mode 100644
index 0000000000..61a96ce11a
--- /dev/null
+++ b/net/vmnet-bridged.m
@@ -0,0 +1,123 @@
+/*
+ * vmnet-bridged.c
+ *
+ * Copyright(c) 2021 Vladislav Yaroshchuk <yaroshchuk2000@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi-types-net.h"
+#include "vmnet_int.h"
+#include "clients.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+
+#include <vmnet/vmnet.h>
+
+typedef struct VmnetBridgedState {
+  VmnetCommonState common;
+
+} VmnetBridgedState;
+
+static NetClientInfo net_vmnet_bridged_info = {
+    .type = NET_CLIENT_DRIVER_VMNET_BRIDGED,
+    .size = sizeof(VmnetBridgedState),
+    .receive = vmnet_receive_common,
+    .cleanup = vmnet_cleanup_common,
+};
+
+static xpc_object_t create_if_desc(const Netdev *netdev, Error **errp);
+
+static bool validate_ifname(const char *ifname);
+
+static const char *get_valid_ifnames(void);
+
+int net_init_vmnet_bridged(const Netdev *netdev, const char *name,
+                           NetClientState *peer, Error **errp)
+{
+    NetClientState *nc;
+    xpc_object_t if_desc;
+
+    nc = qemu_new_net_client(&net_vmnet_bridged_info,
+                             peer, "vmnet-bridged", name);
+    if_desc = create_if_desc(netdev, errp);
+    if (!if_desc) {
+        error_setg(errp,
+                   "unsupported ifname, should be one of: %s",
+                   get_valid_ifnames());
+        return -1;
+    }
+
+    return vmnet_if_create(nc, if_desc, errp, NULL);
+}
+
+static xpc_object_t create_if_desc(const Netdev *netdev, Error **errp)
+{
+    const NetdevVmnetBridgedOptions *options;
+    xpc_object_t if_desc;
+
+    if_desc = xpc_dictionary_create(NULL, NULL, 0);
+    xpc_dictionary_set_uint64(
+        if_desc,
+        vmnet_operation_mode_key,
+        VMNET_BRIDGED_MODE
+    );
+
+    xpc_dictionary_set_bool(
+        if_desc,
+        vmnet_allocate_mac_address_key,
+        false
+    );
+
+    options = &(netdev->u.vmnet_bridged);
+    if (validate_ifname(options->ifname)) {
+        xpc_dictionary_set_string(if_desc,
+                                  vmnet_shared_interface_name_key,
+                                  options->ifname);
+    } else {
+        return NULL;
+    }
+    return if_desc;
+}
+
+static bool validate_ifname(const char *ifname)
+{
+    xpc_object_t shared_if_list = vmnet_copy_shared_interface_list();
+    __block bool match = false;
+
+    xpc_array_apply(
+        shared_if_list,
+        ^bool(size_t index, xpc_object_t value) {
+          if (strcmp(xpc_string_get_string_ptr(value), ifname) == 0) {
+              match = true;
+              return false;
+          }
+          return true;
+        });
+
+    return match;
+}
+
+static const char *get_valid_ifnames(void)
+{
+    xpc_object_t shared_if_list = vmnet_copy_shared_interface_list();
+    __block char *if_list = NULL;
+
+    xpc_array_apply(
+        shared_if_list,
+        ^bool(size_t index, xpc_object_t value) {
+          if_list = g_strconcat(xpc_string_get_string_ptr(value),
+                                " ",
+                                if_list,
+                                NULL);
+          return true;
+        });
+
+    if (if_list) {
+        return if_list;
+    }
+    return "[no interfaces]";
+}
-- 
2.23.0