ceph/src/spdk/dpdk/examples/vm_power_manager/channel_monitor.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #ifndef CHANNEL_MONITOR_H_
   6 #define CHANNEL_MONITOR_H_
   7
   8 #include "channel_manager.h"
   9 #include "channel_commands.h"
  10
  11 struct core_share {
  12         unsigned int pcpu;
  13         /*
  14          * 1 CORE SHARE
  15          * 0 NOT SHARED
  16          */
  17         int status;
  18 };
  19
  20 struct policy {
  21         struct channel_packet pkt;
  22         uint32_t pfid[MAX_VFS];
  23         uint32_t port[MAX_VFS];
  24         unsigned int enabled;
  25         struct core_share core_share[MAX_VCPU_PER_VM];
  26 };
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 /**
  33  * Setup the Channel Monitor resources required to initialize epoll.
  34  * Must be called first before calling other functions.
  35  *
  36  * @return
  37  *  - 0 on success.
  38  *  - Negative on error.
  39  */
  40 int channel_monitor_init(void);
  41
  42 /**
  43  * Run the channel monitor, loops forever on on epoll_wait.
  44  *
  45  *
  46  * @return
  47  *  None
  48  */
  49 void run_channel_monitor(void);
  50
  51 /**
  52  * Exit the Channel Monitor, exiting the epoll_wait loop and events processing.
  53  *
  54  * @return
  55  *  - 0 on success.
  56  *  - Negative on error.
  57  */
  58 void channel_monitor_exit(void);
  59
  60 /**
  61  * Add an open channel to monitor via epoll. A pointer to struct channel_info
  62  * will be registered with epoll for event processing.
  63  * It is thread-safe.
  64  *
  65  * @param chan_info
  66  *  Pointer to struct channel_info pointer.
  67  *
  68  * @return
  69  *  - 0 on success.
  70  *  - Negative on error.
  71  */
  72 int add_channel_to_monitor(struct channel_info **chan_info);
  73
  74 /**
  75  * Remove a previously added channel from epoll control.
  76  *
  77  * @param chan_info
  78  *  Pointer to struct channel_info.
  79  *
  80  * @return
  81  *  - 0 on success.
  82  *  - Negative on error.
  83  */
  84 int remove_channel_from_monitor(struct channel_info *chan_info);
  85
  86 #ifdef __cplusplus
  87 }
  88 #endif
  89
  90
  91 #endif /* CHANNEL_MONITOR_H_ */