hw/ide/via: implement legacy/native mode switching

[qmiga/qemu.git] / blockdev-nbd.c

diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 8174023..2130124 100644 (file)
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -14,6 +14,8 @@
 #include "sysemu/block-backend.h"
 #include "hw/block/block.h"
 #include "qapi/error.h"
+#include "qapi/clone-visitor.h"
+#include "qapi/qapi-visit-block-export.h"
 #include "qapi/qapi-commands-block-export.h"
 #include "block/nbd.h"
 #include "io/channel-socket.h"
@@ -28,18 +30,23 @@ typedef struct NBDServerData {
 } NBDServerData;
 
 static NBDServerData *nbd_server;
-static bool is_qemu_nbd;
+static int qemu_nbd_connections = -1; /* Non-negative if this is qemu-nbd */
 
 static void nbd_update_server_watch(NBDServerData *s);
 
-void nbd_server_is_qemu_nbd(bool value)
+void nbd_server_is_qemu_nbd(int max_connections)
 {
-    is_qemu_nbd = value;
+    qemu_nbd_connections = max_connections;
 }
 
 bool nbd_server_is_running(void)
 {
-    return nbd_server || is_qemu_nbd;
+    return nbd_server || qemu_nbd_connections >= 0;
+}
+
+int nbd_server_max_connections(void)
+{
+    return nbd_server ? nbd_server->max_connections : qemu_nbd_connections;
 }
 
 static void nbd_blockdev_client_closed(NBDClient *client, bool ignored)
@@ -106,9 +113,9 @@ static QCryptoTLSCreds *nbd_get_tls_creds(const char *id, Error **errp)
         return NULL;
     }
 
-    if (creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
-        error_setg(errp,
-                   "Expecting TLS credentials with a server endpoint");
+    if (!qcrypto_tls_creds_check_endpoint(creds,
+                                          QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
+                                          errp)) {
         return NULL;
     }
     object_ref(obj);
@@ -132,7 +139,12 @@ void nbd_server_start(SocketAddress *addr, const char *tls_creds,
     qio_net_listener_set_name(nbd_server->listener,
                               "nbd-listener");
 
-    if (qio_net_listener_open_sync(nbd_server->listener, addr, 1, errp) < 0) {
+    /*
+     * Because this server is persistent, a backlog of SOMAXCONN is
+     * better than trying to size it to max_connections.
+     */
+    if (qio_net_listener_open_sync(nbd_server->listener, addr, SOMAXCONN,
+                                   errp) < 0) {
         goto error;
     }
 
@@ -141,12 +153,6 @@ void nbd_server_start(SocketAddress *addr, const char *tls_creds,
         if (!nbd_server->tlscreds) {
             goto error;
         }
-
-        /* TODO SOCKET_ADDRESS_TYPE_FD where fd has AF_INET or AF_INET6 */
-        if (addr->type != SOCKET_ADDRESS_TYPE_INET) {
-            error_setg(errp, "TLS is only supported with IPv4/IPv6");
-            goto error;
-        }
     }
 
     nbd_server->tlsauthz = g_strdup(tls_authz);
@@ -167,8 +173,8 @@ void nbd_server_start_options(NbdServerOptions *arg, Error **errp)
 }
 
 void qmp_nbd_server_start(SocketAddressLegacy *addr,
-                          bool has_tls_creds, const char *tls_creds,
-                          bool has_tls_authz, const char *tls_authz,
+                          const char *tls_creds,
+                          const char *tls_authz,
                           bool has_max_connections, uint32_t max_connections,
                           Error **errp)
 {
@@ -194,8 +200,8 @@ void qmp_nbd_server_add(NbdServerAddOptions *arg, Error **errp)
      * block-export-add would default to the node-name, but we may have to use
      * the device name as a default here for compatibility.
      */
-    if (!arg->has_name) {
-        arg->name = arg->device;
+    if (!arg->name) {
+        arg->name = g_strdup(arg->device);
     }
 
     export_opts = g_new(BlockExportOptions, 1);
@@ -205,15 +211,19 @@ void qmp_nbd_server_add(NbdServerAddOptions *arg, Error **errp)
         .node_name              = g_strdup(bdrv_get_node_name(bs)),
         .has_writable           = arg->has_writable,
         .writable               = arg->writable,
-        .u.nbd = {
-            .has_name           = true,
-            .name               = g_strdup(arg->name),
-            .has_description    = arg->has_description,
-            .description        = g_strdup(arg->description),
-            .has_bitmap         = arg->has_bitmap,
-            .bitmap             = g_strdup(arg->bitmap),
-        },
     };
+    QAPI_CLONE_MEMBERS(BlockExportOptionsNbdBase, &export_opts->u.nbd,
+                       qapi_NbdServerAddOptions_base(arg));
+    if (arg->bitmap) {
+        BlockDirtyBitmapOrStr *el = g_new(BlockDirtyBitmapOrStr, 1);
+
+        *el = (BlockDirtyBitmapOrStr) {
+            .type = QTYPE_QSTRING,
+            .u.local = g_strdup(arg->bitmap),
+        };
+        export_opts->u.nbd.has_bitmaps = true;
+        QAPI_LIST_PREPEND(export_opts->u.nbd.bitmaps, el);
+    }
 
     /*
      * nbd-server-add doesn't complain when a read-only device should be