[linux-vdagent PATCH 03/10] vdagent-virtio-port: Add vdagent_virtio_port_reset()

[Hans de Goede <hdegoede@xxxxxxxxxx>]

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 src/vdagent-virtio-port.c | 10 ++++++++++
 src/vdagent-virtio-port.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/vdagent-virtio-port.c b/src/vdagent-virtio-port.c
index 7e9a3e6..f56428e 100644
--- a/src/vdagent-virtio-port.c
+++ b/src/vdagent-virtio-port.c
@@ -260,6 +260,16 @@ void vdagent_virtio_port_flush(struct vdagent_virtio_port **vportp)
         vdagent_virtio_port_do_write(vportp);
 }
 
+void vdagent_virtio_port_reset(struct vdagent_virtio_port *vport, int port)
+{
+    if (port > VDP_LAST_PORT) {
+        syslog(LOG_ERR, "vdagent_virtio_port_reset port out of range");
+        return;
+    }
+    free(vport->port_data[port].message_data);
+    memset(&vport->port_data[port], 0, sizeof(vport->port_data[0]));
+}
+
 static void vdagent_virtio_port_do_chunk(struct vdagent_virtio_port **vportp)
 {
     int avail, read, pos = 0;
diff --git a/src/vdagent-virtio-port.h b/src/vdagent-virtio-port.h
index c47fbcc..a392ebe 100644
--- a/src/vdagent-virtio-port.h
+++ b/src/vdagent-virtio-port.h
@@ -99,5 +99,6 @@ int vdagent_virtio_port_write(
         uint32_t data_size);
 
 void vdagent_virtio_port_flush(struct vdagent_virtio_port **vportp);
+void vdagent_virtio_port_reset(struct vdagent_virtio_port *vport, int port);
 
 #endif
-- 
1.8.1.4

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