ceph/src/msg/async/dpdk/EventDPDK.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5   *
   6  * Copyright (C) 2015 XSky <haomai@xsky.com>
   7  *
   8  * Author: Haomai Wang <haomaiwang@gmail.com>
   9  *
  10  * This is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License version 2.1, as published by the Free Software
  13  * Foundation.  See file COPYING.
  14  *
  15  */
  16
  17 #include "common/errno.h"
  18 #include "DPDKStack.h"
  19 #include "EventDPDK.h"
  20
  21 #include "common/dout.h"
  22 #include "include/ceph_assert.h"
  23
  24 #define dout_subsys ceph_subsys_ms
  25
  26 #undef dout_prefix
  27 #define dout_prefix *_dout << "DPDKDriver."
  28
  29 int DPDKDriver::init(EventCenter *c, int nevent)
  30 {
  31         return 0;
  32 }
  33
  34 int DPDKDriver::add_event(int fd, int cur_mask, int add_mask)
  35 {
  36         ldout(cct, 20) << __func__ << " add event fd=" << fd << " cur_mask=" << cur_mask
  37                                                                  << " add_mask=" << add_mask << dendl;
  38
  39         int r = manager.listen(fd, add_mask);
  40         if (r < 0) {
  41                 lderr(cct) << __func__ << " add fd=" << fd << " failed. "
  42                            << cpp_strerror(-r) << dendl;
  43                 return -errno;
  44         }
  45
  46         return 0;
  47 }
  48
  49 int DPDKDriver::del_event(int fd, int cur_mask, int delmask)
  50 {
  51         ldout(cct, 20) << __func__ << " del event fd=" << fd << " cur_mask=" << cur_mask
  52                                                                  << " delmask=" << delmask << dendl;
  53         int r = 0;
  54
  55         if (delmask != EVENT_NONE) {
  56                 if ((r = manager.unlisten(fd, delmask)) < 0) {
  57                         lderr(cct) << __func__ << " delete fd=" << fd << " delmask=" << delmask
  58                                                                  << " failed." << cpp_strerror(-r) << dendl;
  59                         return r;
  60                 }
  61         }
  62         return 0;
  63 }
  64
  65 int DPDKDriver::resize_events(int newsize)
  66 {
  67         return 0;
  68 }
  69
  70 int DPDKDriver::event_wait(std::vector<FiredFileEvent> &fired_events, struct timeval *tvp)
  71 {
  72         int num_events = 512;
  73         int events[num_events];
  74   int masks[num_events];
  75
  76         int retval = manager.poll(events, masks, num_events, tvp);
  77         if (retval > 0) {
  78                 fired_events.resize(retval);
  79                 for (int i = 0; i < retval; i++) {
  80                         fired_events[i].fd = events[i];
  81                         fired_events[i].mask = masks[i];
  82                 }
  83         }
  84         return retval;
  85 }