lib/librte_eal/common/hotplug_mp.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4
   5 #ifndef _HOTPLUG_MP_H_
   6 #define _HOTPLUG_MP_H_
   7
   8 #include "rte_dev.h"
   9 #include "rte_bus.h"
  10
  11 #define EAL_DEV_MP_ACTION_REQUEST      "eal_dev_mp_request"
  12 #define EAL_DEV_MP_ACTION_RESPONSE     "eal_dev_mp_response"
  13
  14 #define EAL_DEV_MP_DEV_NAME_MAX_LEN RTE_DEV_NAME_MAX_LEN
  15 #define EAL_DEV_MP_BUS_NAME_MAX_LEN 32
  16 #define EAL_DEV_MP_DEV_ARGS_MAX_LEN 128
  17
  18 enum eal_dev_req_type {
  19         EAL_DEV_REQ_TYPE_ATTACH,
  20         EAL_DEV_REQ_TYPE_DETACH,
  21         EAL_DEV_REQ_TYPE_ATTACH_ROLLBACK,
  22         EAL_DEV_REQ_TYPE_DETACH_ROLLBACK,
  23 };
  24
  25 struct eal_dev_mp_req {
  26         enum eal_dev_req_type t;
  27         char devargs[EAL_DEV_MP_DEV_ARGS_MAX_LEN];
  28         int result;
  29 };
  30
  31 /**
  32  * This is a synchronous wrapper for secondary process send
  33  * request to primary process, this is invoked when an attach
  34  * or detach request is issued from primary process.
  35  */
  36 int eal_dev_hotplug_request_to_primary(struct eal_dev_mp_req *req);
  37
  38 /**
  39  * this is a synchronous wrapper for primary process send
  40  * request to secondary process, this is invoked when an attach
  41  * or detach request issued from secondary process.
  42  */
  43 int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req);
  44
  45
  46 #endif /* _HOTPLUG_MP_H_ */