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-rw-r--r--net/hub.c14
-rw-r--r--net/hub.h1
-rw-r--r--net/net.c6
3 files changed, 21 insertions, 0 deletions
diff --git a/net/hub.c b/net/hub.c
index a24c9d17f7..df32074de0 100644
--- a/net/hub.c
+++ b/net/hub.c
@@ -338,3 +338,17 @@ void net_hub_check_clients(void)
         }
     }
 }
+
+bool net_hub_flush(NetClientState *nc)
+{
+    NetHubPort *port;
+    NetHubPort *source_port = DO_UPCAST(NetHubPort, nc, nc);
+    int ret = 0;
+
+    QLIST_FOREACH(port, &source_port->hub->ports, next) {
+        if (port != source_port) {
+            ret += qemu_net_queue_flush(port->nc.send_queue);
+        }
+    }
+    return ret ? true : false;
+}
diff --git a/net/hub.h b/net/hub.h
index 583ada89d8..a625effe00 100644
--- a/net/hub.h
+++ b/net/hub.h
@@ -21,5 +21,6 @@ NetClientState *net_hub_add_port(int hub_id, const char *name);
 NetClientState *net_hub_find_client_by_name(int hub_id, const char *name);
 void net_hub_info(Monitor *mon);
 void net_hub_check_clients(void);
+bool net_hub_flush(NetClientState *nc);
 
 #endif /* NET_HUB_H */
diff --git a/net/net.c b/net/net.c
index be03a8dd14..a66aa02472 100644
--- a/net/net.c
+++ b/net/net.c
@@ -441,6 +441,12 @@ void qemu_flush_queued_packets(NetClientState *nc)
 {
     nc->receive_disabled = 0;
 
+    if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
+        if (net_hub_flush(nc->peer)) {
+            qemu_notify_event();
+        }
+        return;
+    }
     if (qemu_net_queue_flush(nc->send_queue)) {
         /* We emptied the queue successfully, signal to the IO thread to repoll
          * the file descriptor (for tap, for example).