934c6ace46
Add an option to enable/disable sending and respecting PAUSE frames as defined in 802.3x and 802.3z specifications. We will configure the Link level PAUSEs (as opposed to PFC). In simple words Ethernel Flow Control relies on sending/receiving PAUSE (XOFF) MAC frames that indicate the sender that receiver's buffer is almost full. The idea is to avoid receive buffer overflow. When receiver's buffer is being freed it will send XON frame to indicate to the sender that it may transmit again. - Added DPDK-specific command option to toggle the feature. - Sending PAUSEs is enabled by default. Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
49 lines
1.5 KiB
C++
49 lines
1.5 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,
|
|
bool use_lro = true,
|
|
bool enable_fc = true);
|
|
|
|
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
|