hvt->outmsg = NULL;
hvt->outmsg_len = 0;
+ if (hvt->on_read)
+ hvt->on_read();
+ hvt->on_read = NULL;
+
out_unlock:
mutex_unlock(&hvt->lock);
return ret;
mutex_unlock(&hvt->lock);
}
-int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
+int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len,
+ void (*on_read_cb)(void))
{
struct cn_msg *cn_msg;
int ret = 0;
memcpy(cn_msg->data, msg, len);
ret = cn_netlink_send(cn_msg, 0, 0, GFP_ATOMIC);
kfree(cn_msg);
+ /*
+ * We don't know when netlink messages are delivered but unlike
+ * in CHARDEV mode we're not blocked and we can send next
+ * messages right away.
+ */
+ if (on_read_cb)
+ on_read_cb();
return ret;
}
/* HVUTIL_TRANSPORT_CHARDEV */
if (hvt->outmsg) {
memcpy(hvt->outmsg, msg, len);
hvt->outmsg_len = len;
+ hvt->on_read = on_read_cb;
wake_up_interruptible(&hvt->outmsg_q);
} else
ret = -ENOMEM;