New upstream version 18.11-rc1

[deb_dpdk.git] / lib / librte_eal / common / hotplug_mp.h

diff --git a/lib/librte_eal/common/hotplug_mp.h b/lib/librte_eal/common/hotplug_mp.h
new file mode 100644 (file)
index 0000000..597fde3
--- /dev/null
+++ b/lib/librte_eal/common/hotplug_mp.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef _HOTPLUG_MP_H_
+#define _HOTPLUG_MP_H_
+
+#include "rte_dev.h"
+#include "rte_bus.h"
+
+#define EAL_DEV_MP_ACTION_REQUEST      "eal_dev_mp_request"
+#define EAL_DEV_MP_ACTION_RESPONSE     "eal_dev_mp_response"
+
+#define EAL_DEV_MP_DEV_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
+#define EAL_DEV_MP_BUS_NAME_MAX_LEN 32
+#define EAL_DEV_MP_DEV_ARGS_MAX_LEN 128
+
+enum eal_dev_req_type {
+       EAL_DEV_REQ_TYPE_ATTACH,
+       EAL_DEV_REQ_TYPE_DETACH,
+       EAL_DEV_REQ_TYPE_ATTACH_ROLLBACK,
+       EAL_DEV_REQ_TYPE_DETACH_ROLLBACK,
+};
+
+struct eal_dev_mp_req {
+       enum eal_dev_req_type t;
+       char devargs[EAL_DEV_MP_DEV_ARGS_MAX_LEN];
+       int result;
+};
+
+/**
+ * This is a synchronous wrapper for secondary process send
+ * request to primary process, this is invoked when an attach
+ * or detach request is issued from primary process.
+ */
+int eal_dev_hotplug_request_to_primary(struct eal_dev_mp_req *req);
+
+/**
+ * this is a synchronous wrapper for primary process send
+ * request to secondary process, this is invoked when an attach
+ * or detach request issued from secondary process.
+ */
+int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req);
+
+
+#endif /* _HOTPLUG_MP_H_ */