Files
scylladb/net/dpdk.hh
Vlad Zolotarov 06565c80d5 DPDK: Decouple Rx data buffers
- Allocate the data buffers instead of using the default inline rte_mbuf
     layout.
   - Implement an rx_gc() and add an _rx_gc_poller to call it: we will refill
     the rx mbuf's when at least 64 free buffers.
     This threshold has been chosen as a sane enough number.
   - Introduce the mbuf_data_size == 4K. Allocate 4K buffers for a detached flow.
     We are still going to allocate 2K data buffers for an inline case since 4K
     buffers would require 2 pages per mbuf due to "mbuf_overhead".

Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
2015-02-19 16:58:54 +02:00

47 lines
1.4 KiB
C++

/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Copyright (C) 2014 Cloudius Systems, Ltd.
*/
#ifdef HAVE_DPDK
#ifndef _SEASTAR_DPDK_DEV_H
#define _SEASTAR_DPDK_DEV_H
#include <memory>
#include "net.hh"
#include "core/sstring.hh"
std::unique_ptr<net::device> create_dpdk_net_device(
uint8_t port_idx = 0,
uint8_t num_queues = 1);
boost::program_options::options_description get_dpdk_net_options_description();
namespace dpdk {
/**
* @return Number of bytes needed for mempool objects of each QP.
*/
uint32_t qp_mempool_obj_size(bool hugetlbfs_membackend);
}
#endif // _SEASTAR_DPDK_DEV_H
#endif // HAVE_DPDK