+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-/*
- * 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.
- */
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2015 XSky <haomai@xsky.com>
- *
- * Author: Haomai Wang <haomaiwang@gmail.com>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation. See file COPYING.
- *
- */
-
-#include <atomic>
-#include <vector>
-#include <queue>
-
-#include <rte_config.h>
-#include <rte_common.h>
-#include <rte_eal.h>
-#include <rte_pci.h>
-#include <rte_ethdev.h>
-#include <rte_cycles.h>
-#include <rte_memzone.h>
-
-#include "include/page.h"
-#include "align.h"
-#include "IP.h"
-#include "const.h"
-#include "dpdk_rte.h"
-#include "DPDK.h"
-#include "toeplitz.h"
-
-#include "common/Cycles.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "include/assert.h"
-
-#define dout_subsys ceph_subsys_dpdk
-#undef dout_prefix
-#define dout_prefix *_dout << "dpdk "
-
-
-void* as_cookie(struct rte_pktmbuf_pool_private& p) {
- return &p;
-};
-
-#ifndef MARKER
-typedef void *MARKER[0]; /**< generic marker for a point in a structure */
-#endif
-
-/******************* Net device related constatns *****************************/
-static constexpr uint16_t default_ring_size = 512;
-
-//
-// We need 2 times the ring size of buffers because of the way PMDs
-// refill the ring.
-//
-static constexpr uint16_t mbufs_per_queue_rx = 2 * default_ring_size;
-static constexpr uint16_t rx_gc_thresh = 64;
-
-//
-// No need to keep more descriptors in the air than can be sent in a single
-// rte_eth_tx_burst() call.
-//
-static constexpr uint16_t mbufs_per_queue_tx = 2 * default_ring_size;
-
-static constexpr uint16_t mbuf_cache_size = 512;
-static constexpr uint16_t mbuf_overhead =
-sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM;
-//
-// We'll allocate 2K data buffers for an inline case because this would require
-// a single page per mbuf. If we used 4K data buffers here it would require 2
-// pages for a single buffer (due to "mbuf_overhead") and this is a much more
-// demanding memory constraint.
-//
-static constexpr size_t inline_mbuf_data_size = 2048;
-
-//
-// Size of the data buffer in the non-inline case.
-//
-// We may want to change (increase) this value in future, while the
-// inline_mbuf_data_size value will unlikely change due to reasons described
-// above.
-//
-static constexpr size_t mbuf_data_size = 4096;
-
-// (INLINE_MBUF_DATA_SIZE(2K)*32 = 64K = Max TSO/LRO size) + 1 mbuf for headers
-static constexpr uint8_t max_frags = 32 + 1;
-
-//
-// Intel's 40G NIC HW limit for a number of fragments in an xmit segment.
-//
-// See Chapter 8.4.1 "Transmit Packet in System Memory" of the xl710 devices
-// spec. for more details.
-//
-static constexpr uint8_t i40e_max_xmit_segment_frags = 8;
-
-//
-// VMWare's virtual NIC limit for a number of fragments in an xmit segment.
-//
-// see drivers/net/vmxnet3/base/vmxnet3_defs.h VMXNET3_MAX_TXD_PER_PKT
-//
-static constexpr uint8_t vmxnet3_max_xmit_segment_frags = 16;
-
-static constexpr uint16_t inline_mbuf_size = inline_mbuf_data_size + mbuf_overhead;
-
-static size_t huge_page_size = 512 * CEPH_PAGE_SIZE;
-
-uint32_t qp_mempool_obj_size()
-{
- uint32_t mp_size = 0;
- struct rte_mempool_objsz mp_obj_sz = {};
-
- //
- // We will align each size to huge page size because DPDK allocates
- // physically contiguous memory region for each pool object.
- //
-
- // Rx
- mp_size += align_up(rte_mempool_calc_obj_size(mbuf_overhead, 0, &mp_obj_sz)+
- sizeof(struct rte_pktmbuf_pool_private),
- huge_page_size);
-
- //Tx
- std::memset(&mp_obj_sz, 0, sizeof(mp_obj_sz));
- mp_size += align_up(rte_mempool_calc_obj_size(inline_mbuf_size, 0,
- &mp_obj_sz)+
- sizeof(struct rte_pktmbuf_pool_private),
- huge_page_size);
- return mp_size;
-}
-
-static constexpr const char* pktmbuf_pool_name = "dpdk_net_pktmbuf_pool";
-
-/*
- * When doing reads from the NIC queues, use this batch size
- */
-static constexpr uint8_t packet_read_size = 32;
-/******************************************************************************/
-
-int DPDKDevice::init_port_start()
-{
- assert(_port_idx < rte_eth_dev_count());
-
- rte_eth_dev_info_get(_port_idx, &_dev_info);
-
- //
- // This is a workaround for a missing handling of a HW limitation in the
- // DPDK i40e driver. This and all related to _is_i40e_device code should be
- // removed once this handling is added.
- //
- if (std::string("rte_i40evf_pmd") == _dev_info.driver_name ||
- std::string("rte_i40e_pmd") == _dev_info.driver_name) {
- ldout(cct, 1) << __func__ << " Device is an Intel's 40G NIC. Enabling 8 fragments hack!" << dendl;
- _is_i40e_device = true;
- }
-
- if (std::string("rte_vmxnet3_pmd") == _dev_info.driver_name) {
- ldout(cct, 1) << __func__ << " Device is a VMWare Virtual NIC. Enabling 16 fragments hack!" << dendl;
- _is_vmxnet3_device = true;
- }
-
- //
- // Another workaround: this time for a lack of number of RSS bits.
- // ixgbe PF NICs support up to 16 RSS queues.
- // ixgbe VF NICs support up to 4 RSS queues.
- // i40e PF NICs support up to 64 RSS queues.
- // i40e VF NICs support up to 16 RSS queues.
- //
- if (std::string("rte_ixgbe_pmd") == _dev_info.driver_name) {
- _dev_info.max_rx_queues = std::min(_dev_info.max_rx_queues, (uint16_t)16);
- } else if (std::string("rte_ixgbevf_pmd") == _dev_info.driver_name) {
- _dev_info.max_rx_queues = std::min(_dev_info.max_rx_queues, (uint16_t)4);
- } else if (std::string("rte_i40e_pmd") == _dev_info.driver_name) {
- _dev_info.max_rx_queues = std::min(_dev_info.max_rx_queues, (uint16_t)64);
- } else if (std::string("rte_i40evf_pmd") == _dev_info.driver_name) {
- _dev_info.max_rx_queues = std::min(_dev_info.max_rx_queues, (uint16_t)16);
- }
-
- // Clear txq_flags - we want to support all available offload features
- // except for multi-mempool and refcnt'ing which we don't need
- _dev_info.default_txconf.txq_flags =
- ETH_TXQ_FLAGS_NOMULTMEMP | ETH_TXQ_FLAGS_NOREFCOUNT;
-
- //
- // Disable features that are not supported by port's HW
- //
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_UDP_CKSUM)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOXSUMUDP;
- }
-
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOXSUMTCP;
- }
-
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_SCTP_CKSUM)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOXSUMSCTP;
- }
-
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_VLAN_INSERT)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
- }
-
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_VLAN_INSERT)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
- }
-
- if (!(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO)) {
- _dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
- }
-
- /* for port configuration all features are off by default */
- rte_eth_conf port_conf = { 0 };
-
- ldout(cct, 5) << __func__ << " Port " << int(_port_idx) << ": max_rx_queues "
- << _dev_info.max_rx_queues << " max_tx_queues "
- << _dev_info.max_tx_queues << dendl;
-
- _num_queues = std::min({_num_queues, _dev_info.max_rx_queues, _dev_info.max_tx_queues});
-
- ldout(cct, 5) << __func__ << " Port " << int(_port_idx) << ": using "
- << _num_queues << " queues" << dendl;;
-
- // Set RSS mode: enable RSS if seastar is configured with more than 1 CPU.
- // Even if port has a single queue we still want the RSS feature to be
- // available in order to make HW calculate RSS hash for us.
- if (_num_queues > 1) {
- if (_dev_info.hash_key_size == 40) {
- _rss_key = default_rsskey_40bytes;
- } else if (_dev_info.hash_key_size == 52) {
- _rss_key = default_rsskey_52bytes;
- } else if (_dev_info.hash_key_size != 0) {
- // WTF?!!
- rte_exit(EXIT_FAILURE,
- "Port %d: We support only 40 or 52 bytes RSS hash keys, %d bytes key requested",
- _port_idx, _dev_info.hash_key_size);
- } else {
- _rss_key = default_rsskey_40bytes;
- _dev_info.hash_key_size = 40;
- }
-
- port_conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
- port_conf.rx_adv_conf.rss_conf.rss_hf = ETH_RSS_PROTO_MASK;
- if (_dev_info.hash_key_size) {
- port_conf.rx_adv_conf.rss_conf.rss_key = const_cast<uint8_t *>(_rss_key.data());
- port_conf.rx_adv_conf.rss_conf.rss_key_len = _dev_info.hash_key_size;
- }
- } else {
- port_conf.rxmode.mq_mode = ETH_MQ_RX_NONE;
- }
-
- if (_num_queues > 1) {
- if (_dev_info.reta_size) {
- // RETA size should be a power of 2
- assert((_dev_info.reta_size & (_dev_info.reta_size - 1)) == 0);
-
- // Set the RSS table to the correct size
- _redir_table.resize(_dev_info.reta_size);
- _rss_table_bits = std::lround(std::log2(_dev_info.reta_size));
- ldout(cct, 5) << __func__ << " Port " << int(_port_idx)
- << ": RSS table size is " << _dev_info.reta_size << dendl;
- } else {
- // FIXME: same with sw_reta
- _redir_table.resize(128);
- _rss_table_bits = std::lround(std::log2(128));
- }
- } else {
- _redir_table.push_back(0);
- }
-
- // Set Rx VLAN stripping
- if (_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_VLAN_STRIP) {
- port_conf.rxmode.hw_vlan_strip = 1;
- }
-
- // Enable HW CRC stripping
- port_conf.rxmode.hw_strip_crc = 1;
-
-#ifdef RTE_ETHDEV_HAS_LRO_SUPPORT
- // Enable LRO
- if (_use_lro && (_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)) {
- ldout(cct, 1) << __func__ << " LRO is on" << dendl;
- port_conf.rxmode.enable_lro = 1;
- _hw_features.rx_lro = true;
- } else
-#endif
- ldout(cct, 1) << __func__ << " LRO is off" << dendl;
-
- // Check that all CSUM features are either all set all together or not set
- // all together. If this assumption breaks we need to rework the below logic
- // by splitting the csum offload feature bit into separate bits for IPv4,
- // TCP.
- assert(((_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_IPV4_CKSUM) &&
- (_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_CKSUM)) ||
- (!(_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_IPV4_CKSUM) &&
- !(_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_CKSUM)));
-
- // Set Rx checksum checking
- if ((_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_IPV4_CKSUM) &&
- (_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_CKSUM)) {
- ldout(cct, 1) << __func__ << " RX checksum offload supported" << dendl;
- port_conf.rxmode.hw_ip_checksum = 1;
- _hw_features.rx_csum_offload = 1;
- }
-
- if ((_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_IPV4_CKSUM)) {
- ldout(cct, 1) << __func__ << " TX ip checksum offload supported" << dendl;
- _hw_features.tx_csum_ip_offload = 1;
- }
-
- // TSO is supported starting from DPDK v1.8
- if (_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO) {
- ldout(cct, 1) << __func__ << " TSO is supported" << dendl;
- _hw_features.tx_tso = 1;
- }
-
- // Check that Tx TCP CSUM features are either all set all together
- // or not set all together. If this assumption breaks we need to rework the
- // below logic by splitting the csum offload feature bit into separate bits
- // for TCP.
- assert((_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) ||
- !(_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM));
-
- if (_dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) {
- ldout(cct, 1) << __func__ << " TX TCP checksum offload supported" << dendl;
- _hw_features.tx_csum_l4_offload = 1;
- }
-
- int retval;
-
- ldout(cct, 1) << __func__ << " Port " << int(_port_idx) << " init ... " << dendl;
-
- /*
- * Standard DPDK port initialisation - config port, then set up
- * rx and tx rings.
- */
- if ((retval = rte_eth_dev_configure(_port_idx, _num_queues, _num_queues,
- &port_conf)) != 0) {
- lderr(cct) << __func__ << " failed to configure port " << (int)_port_idx
- << " rx/tx queues " << _num_queues << " error " << cpp_strerror(retval) << dendl;
- return retval;
- }
-
- //rte_eth_promiscuous_enable(port_num);
- ldout(cct, 1) << __func__ << " done." << dendl;
-
- return 0;
-}
-
-void DPDKDevice::set_hw_flow_control()
-{
- // Read the port's current/default flow control settings
- struct rte_eth_fc_conf fc_conf;
- auto ret = rte_eth_dev_flow_ctrl_get(_port_idx, &fc_conf);
-
- if (ret == -ENOTSUP) {
- ldout(cct, 1) << __func__ << " port " << int(_port_idx)
- << ": not support to get hardware flow control settings: " << ret << dendl;
- goto not_supported;
- }
-
- if (ret < 0) {
- lderr(cct) << __func__ << " port " << int(_port_idx)
- << ": failed to get hardware flow control settings: " << ret << dendl;
- ceph_abort();
- }
-
- if (_enable_fc) {
- fc_conf.mode = RTE_FC_FULL;
- } else {
- fc_conf.mode = RTE_FC_NONE;
- }
-
- ret = rte_eth_dev_flow_ctrl_set(_port_idx, &fc_conf);
- if (ret == -ENOTSUP) {
- ldout(cct, 1) << __func__ << " port " << int(_port_idx)
- << ": not support to set hardware flow control settings: " << ret << dendl;
- goto not_supported;
- }
-
- if (ret < 0) {
- lderr(cct) << __func__ << " port " << int(_port_idx)
- << ": failed to set hardware flow control settings: " << ret << dendl;
- ceph_abort();
- }
-
- ldout(cct, 1) << __func__ << " port " << int(_port_idx) << ": HW FC " << _enable_fc << dendl;
- return;
-
-not_supported:
- ldout(cct, 1) << __func__ << " port " << int(_port_idx) << ": changing HW FC settings is not supported" << dendl;
-}
-
-int DPDKDevice::init_port_fini()
-{
- // Changing FC requires HW reset, so set it before the port is initialized.
- set_hw_flow_control();
-
- if (rte_eth_dev_start(_port_idx) != 0) {
- lderr(cct) << __func__ << " can't start port " << _port_idx << dendl;
- return -1;
- }
-
- if (_num_queues > 1) {
- if (!rte_eth_dev_filter_supported(_port_idx, RTE_ETH_FILTER_HASH)) {
- ldout(cct, 5) << __func__ << " Port " << _port_idx << ": HASH FILTER configuration is supported" << dendl;
-
- // Setup HW touse the TOEPLITZ hash function as an RSS hash function
- struct rte_eth_hash_filter_info info = {};
-
- info.info_type = RTE_ETH_HASH_FILTER_GLOBAL_CONFIG;
- info.info.global_conf.hash_func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
-
- if (rte_eth_dev_filter_ctrl(_port_idx, RTE_ETH_FILTER_HASH,
- RTE_ETH_FILTER_SET, &info) < 0) {
- lderr(cct) << __func__ << " cannot set hash function on a port " << _port_idx << dendl;
- return -1;
- }
- }
-
- set_rss_table();
- }
-
- // Wait for a link
- if (check_port_link_status() < 0) {
- lderr(cct) << __func__ << " port link up failed " << _port_idx << dendl;
- return -1;
- }
-
- ldout(cct, 5) << __func__ << " created DPDK device" << dendl;
- return 0;
-}
-
-void DPDKQueuePair::configure_proxies(const std::map<unsigned, float>& cpu_weights) {
- assert(!cpu_weights.empty());
- if (cpu_weights.size() == 1 && cpu_weights.begin()->first == _qid) {
- // special case queue sending to self only, to avoid requiring a hash value
- return;
- }
- register_packet_provider([this] {
- Tub<Packet> p;
- if (!_proxy_packetq.empty()) {
- p = std::move(_proxy_packetq.front());
- _proxy_packetq.pop_front();
- }
- return p;
- });
- build_sw_reta(cpu_weights);
-}
-
-void DPDKQueuePair::build_sw_reta(const std::map<unsigned, float>& cpu_weights) {
- float total_weight = 0;
- for (auto&& x : cpu_weights) {
- total_weight += x.second;
- }
- float accum = 0;
- unsigned idx = 0;
- std::array<uint8_t, 128> reta;
- for (auto&& entry : cpu_weights) {
- auto cpu = entry.first;
- auto weight = entry.second;
- accum += weight;
- while (idx < (accum / total_weight * reta.size() - 0.5)) {
- reta[idx++] = cpu;
- }
- }
- _sw_reta = reta;
-}
-
-
-bool DPDKQueuePair::init_rx_mbuf_pool()
-{
- std::string name = std::string(pktmbuf_pool_name) + std::to_string(_qid) + "_rx";
-
- // reserve the memory for Rx buffers containers
- _rx_free_pkts.reserve(mbufs_per_queue_rx);
- _rx_free_bufs.reserve(mbufs_per_queue_rx);
-
- _pktmbuf_pool_rx = rte_mempool_lookup(name.c_str());
- if (!_pktmbuf_pool_rx) {
- ldout(cct, 1) << __func__ << " Creating Rx mbuf pool '" << name.c_str()
- << "' [" << mbufs_per_queue_rx << " mbufs] ..."<< dendl;
-
- //
- // Don't pass single-producer/single-consumer flags to mbuf create as it
- // seems faster to use a cache instead.
- //
- struct rte_pktmbuf_pool_private roomsz = {};
- roomsz.mbuf_data_room_size = mbuf_data_size + RTE_PKTMBUF_HEADROOM;
- _pktmbuf_pool_rx = rte_mempool_create(
- name.c_str(),
- mbufs_per_queue_rx, mbuf_overhead,
- mbuf_cache_size,
- sizeof(struct rte_pktmbuf_pool_private),
- rte_pktmbuf_pool_init, as_cookie(roomsz),
- rte_pktmbuf_init, nullptr,
- rte_socket_id(), 0);
- if (!_pktmbuf_pool_rx) {
- lderr(cct) << __func__ << " Failed to create mempool for rx" << dendl;
- return false;
- }
-
- //
- // 1) Pull all entries from the pool.
- // 2) Bind data buffers to each of them.
- // 3) Return them back to the pool.
- //
- for (int i = 0; i < mbufs_per_queue_rx; i++) {
- rte_mbuf* m = rte_pktmbuf_alloc(_pktmbuf_pool_rx);
- assert(m);
- _rx_free_bufs.push_back(m);
- }
-
- for (int i = 0; i < cct->_conf->ms_dpdk_rx_buffer_count_per_core; i++) {
- void* m = rte_malloc(NULL, mbuf_data_size, mbuf_data_size);
- assert(m);
- _alloc_bufs.push_back(m);
- }
-
- for (auto&& m : _rx_free_bufs) {
- if (!init_noninline_rx_mbuf(m, mbuf_data_size, _alloc_bufs)) {
- lderr(cct) << __func__ << " Failed to allocate data buffers for Rx ring. "
- "Consider increasing the amount of memory." << dendl;
- return false;
- }
- }
-
- rte_mempool_put_bulk(_pktmbuf_pool_rx, (void**)_rx_free_bufs.data(),
- _rx_free_bufs.size());
-
- _rx_free_bufs.clear();
- if (rte_eth_rx_queue_setup(_dev_port_idx, _qid, default_ring_size,
- rte_eth_dev_socket_id(_dev_port_idx),
- _dev->def_rx_conf(), _pktmbuf_pool_rx) < 0) {
- lderr(cct) << __func__ << " cannot initialize rx queue" << dendl;
- return false;
- }
- }
-
- ldout(cct, 20) << __func__ << " count " << rte_mempool_count(_pktmbuf_pool_rx) << " free count " << rte_mempool_free_count(_pktmbuf_pool_rx) << dendl;
- return _pktmbuf_pool_rx != nullptr;
-}
-
-int DPDKDevice::check_port_link_status()
-{
- int count = 0;
-
- ldout(cct, 20) << __func__ << dendl;
- const int sleep_time = 100 * 1000;
- const int max_check_time = 90; /* 9s (90 * 100ms) in total */
- while (true) {
- struct rte_eth_link link;
- memset(&link, 0, sizeof(link));
- rte_eth_link_get_nowait(_port_idx, &link);
-
- if (true) {
- if (link.link_status) {
- ldout(cct, 5) << __func__ << " done port "
- << static_cast<unsigned>(_port_idx)
- << " link Up - speed " << link.link_speed
- << " Mbps - "
- << ((link.link_duplex == ETH_LINK_FULL_DUPLEX) ? ("full-duplex") : ("half-duplex\n"))
- << dendl;
- break;
- } else if (count++ < max_check_time) {
- ldout(cct, 20) << __func__ << " not ready, continue to wait." << dendl;
- usleep(sleep_time);
- } else {
- lderr(cct) << __func__ << "done port " << _port_idx << " link down" << dendl;
- return -1;
- }
- }
- }
- return 0;
-}
-
-class C_handle_dev_stats : public EventCallback {
- DPDKQueuePair *_qp;
- public:
- C_handle_dev_stats(DPDKQueuePair *qp): _qp(qp) { }
- void do_request(int id) {
- _qp->handle_stats();
- }
-};
-
-DPDKQueuePair::DPDKQueuePair(CephContext *c, EventCenter *cen, DPDKDevice* dev, uint8_t qid)
- : cct(c), _dev(dev), _dev_port_idx(dev->port_idx()), center(cen), _qid(qid),
- _tx_poller(this), _rx_gc_poller(this), _tx_buf_factory(c, dev, qid),
- _tx_gc_poller(this)
-{
- if (!init_rx_mbuf_pool()) {
- lderr(cct) << __func__ << " cannot initialize mbuf pools" << dendl;
- ceph_abort();
- }
-
- static_assert(offsetof(tx_buf, private_end) -
- offsetof(tx_buf, private_start) <= RTE_PKTMBUF_HEADROOM,
- "RTE_PKTMBUF_HEADROOM is less than DPDKQueuePair::tx_buf size! "
- "Increase the headroom size in the DPDK configuration");
- static_assert(offsetof(tx_buf, _mbuf) == 0,
- "There is a pad at the beginning of the tx_buf before _mbuf "
- "field!");
- static_assert((inline_mbuf_data_size & (inline_mbuf_data_size - 1)) == 0,
- "inline_mbuf_data_size has to be a power of two!");
-
- std::string name(std::string("queue") + std::to_string(qid));
- PerfCountersBuilder plb(cct, name, l_dpdk_qp_first, l_dpdk_qp_last);
-
- plb.add_u64_counter(l_dpdk_qp_rx_packets, "dpdk_receive_packets", "DPDK received packets");
- plb.add_u64_counter(l_dpdk_qp_tx_packets, "dpdk_send_packets", "DPDK sendd packets");
- plb.add_u64_counter(l_dpdk_qp_rx_bad_checksum_errors, "dpdk_receive_bad_checksum_errors", "DPDK received bad checksum packets");
- plb.add_u64_counter(l_dpdk_qp_rx_no_memory_errors, "dpdk_receive_no_memory_errors", "DPDK received no memory packets");
- plb.add_u64_counter(l_dpdk_qp_rx_bytes, "dpdk_receive_bytes", "DPDK received bytes");
- plb.add_u64_counter(l_dpdk_qp_tx_bytes, "dpdk_send_bytes", "DPDK sendd bytes");
- plb.add_u64_counter(l_dpdk_qp_rx_last_bunch, "dpdk_receive_last_bunch", "DPDK last received bunch");
- plb.add_u64_counter(l_dpdk_qp_tx_last_bunch, "dpdk_send_last_bunch", "DPDK last send bunch");
- plb.add_u64_counter(l_dpdk_qp_rx_fragments, "dpdk_receive_fragments", "DPDK received total fragments");
- plb.add_u64_counter(l_dpdk_qp_tx_fragments, "dpdk_send_fragments", "DPDK sendd total fragments");
- plb.add_u64_counter(l_dpdk_qp_rx_copy_ops, "dpdk_receive_copy_ops", "DPDK received copy operations");
- plb.add_u64_counter(l_dpdk_qp_tx_copy_ops, "dpdk_send_copy_ops", "DPDK sendd copy operations");
- plb.add_u64_counter(l_dpdk_qp_rx_copy_bytes, "dpdk_receive_copy_bytes", "DPDK received copy bytes");
- plb.add_u64_counter(l_dpdk_qp_tx_copy_bytes, "dpdk_send_copy_bytes", "DPDK send copy bytes");
- plb.add_u64_counter(l_dpdk_qp_rx_linearize_ops, "dpdk_receive_linearize_ops", "DPDK received linearize operations");
- plb.add_u64_counter(l_dpdk_qp_tx_linearize_ops, "dpdk_send_linearize_ops", "DPDK send linearize operations");
- plb.add_u64_counter(l_dpdk_qp_tx_queue_length, "dpdk_send_queue_length", "DPDK send queue length");
-
- perf_logger = plb.create_perf_counters();
- cct->get_perfcounters_collection()->add(perf_logger);
-
- if (!_qid)
- device_stat_time_fd = center->create_time_event(1000*1000, new C_handle_dev_stats(this));
-}
-
-void DPDKQueuePair::handle_stats()
-{
- ldout(cct, 20) << __func__ << " started." << dendl;
- rte_eth_stats rte_stats = {};
- int rc = rte_eth_stats_get(_dev_port_idx, &rte_stats);
-
- if (rc) {
- ldout(cct, 0) << __func__ << " failed to get port statistics: " << cpp_strerror(rc) << dendl;
- return ;
- }
-
-#if RTE_VERSION < RTE_VERSION_NUM(16,7,0,0)
- _dev->perf_logger->set(l_dpdk_dev_rx_mcast, rte_stats.imcasts);
- _dev->perf_logger->set(l_dpdk_dev_rx_badcrc_errors, rte_stats.ibadcrc);
-#endif
- _dev->perf_logger->set(l_dpdk_dev_rx_dropped_errors, rte_stats.imissed);
- _dev->perf_logger->set(l_dpdk_dev_rx_nombuf_errors, rte_stats.rx_nombuf);
-
- _dev->perf_logger->set(l_dpdk_dev_rx_total_errors, rte_stats.ierrors);
- _dev->perf_logger->set(l_dpdk_dev_tx_total_errors, rte_stats.oerrors);
- device_stat_time_fd = center->create_time_event(1000*1000, new C_handle_dev_stats(this));
-}
-
-bool DPDKQueuePair::poll_tx() {
- bool nonloopback = !cct->_conf->ms_dpdk_debug_allow_loopback;
-#ifdef CEPH_PERF_DEV
- uint64_t start = Cycles::rdtsc();
-#endif
- uint32_t total_work = 0;
- if (_tx_packetq.size() < 16) {
- // refill send queue from upper layers
- uint32_t work;
- do {
- work = 0;
- for (auto&& pr : _pkt_providers) {
- auto p = pr();
- if (p) {
- work++;
- if (likely(nonloopback)) {
- // ldout(cct, 0) << __func__ << " len: " << p->len() << " frags: " << p->nr_frags() << dendl;
- _tx_packetq.push_back(std::move(*p));
- } else {
- auto th = p->get_header<eth_hdr>(0);
- if (th->dst_mac == th->src_mac) {
- _dev->l2receive(_qid, std::move(*p));
- } else {
- _tx_packetq.push_back(std::move(*p));
- }
- }
- if (_tx_packetq.size() == 128) {
- break;
- }
- }
- }
- total_work += work;
- } while (work && total_work < 256 && _tx_packetq.size() < 128);
- }
- if (!_tx_packetq.empty()) {
- uint64_t c = send(_tx_packetq);
- perf_logger->inc(l_dpdk_qp_tx_packets, c);
- perf_logger->set(l_dpdk_qp_tx_last_bunch, c);
-#ifdef CEPH_PERF_DEV
- tx_count += total_work;
- tx_cycles += Cycles::rdtsc() - start;
-#endif
- return true;
- }
-
- return false;
-}
-
-inline Tub<Packet> DPDKQueuePair::from_mbuf_lro(rte_mbuf* m)
-{
- _frags.clear();
- _bufs.clear();
-
- for (; m != nullptr; m = m->next) {
- char* data = rte_pktmbuf_mtod(m, char*);
-
- _frags.emplace_back(fragment{data, rte_pktmbuf_data_len(m)});
- _bufs.push_back(data);
- }
-
- auto del = std::bind(
- [this](std::vector<char*> &bufs) {
- for (auto&& b : bufs) { _alloc_bufs.push_back(b); }
- }, std::move(_bufs));
- return Packet(
- _frags.begin(), _frags.end(), make_deleter(std::move(del)));
-}
-
-inline Tub<Packet> DPDKQueuePair::from_mbuf(rte_mbuf* m)
-{
- _rx_free_pkts.push_back(m);
- _num_rx_free_segs += m->nb_segs;
-
- if (!_dev->hw_features_ref().rx_lro || rte_pktmbuf_is_contiguous(m)) {
- char* data = rte_pktmbuf_mtod(m, char*);
-
- return Packet(fragment{data, rte_pktmbuf_data_len(m)},
- make_deleter([this, data] { _alloc_bufs.push_back(data); }));
- } else {
- return from_mbuf_lro(m);
- }
-}
-
-inline bool DPDKQueuePair::refill_one_cluster(rte_mbuf* head)
-{
- for (; head != nullptr; head = head->next) {
- if (!refill_rx_mbuf(head, mbuf_data_size, _alloc_bufs)) {
- //
- // If we failed to allocate a new buffer - push the rest of the
- // cluster back to the free_packets list for a later retry.
- //
- _rx_free_pkts.push_back(head);
- return false;
- }
- _rx_free_bufs.push_back(head);
- }
-
- return true;
-}
-
-bool DPDKQueuePair::rx_gc(bool force)
-{
- if (_num_rx_free_segs >= rx_gc_thresh || force) {
- ldout(cct, 10) << __func__ << " free segs " << _num_rx_free_segs
- << " thresh " << rx_gc_thresh
- << " free pkts " << _rx_free_pkts.size()
- << " pool count " << rte_mempool_count(_pktmbuf_pool_rx)
- << " free pool count " << rte_mempool_free_count(_pktmbuf_pool_rx)
- << dendl;
-
- while (!_rx_free_pkts.empty()) {
- //
- // Use back() + pop_back() semantics to avoid an extra
- // _rx_free_pkts.clear() at the end of the function - clear() has a
- // linear complexity.
- //
- auto m = _rx_free_pkts.back();
- _rx_free_pkts.pop_back();
-
- if (!refill_one_cluster(m)) {
- ldout(cct, 1) << __func__ << " get new mbuf failed " << dendl;
- break;
- }
- }
-
- if (_rx_free_bufs.size()) {
- rte_mempool_put_bulk(_pktmbuf_pool_rx,
- (void **)_rx_free_bufs.data(),
- _rx_free_bufs.size());
-
- // TODO: assert() in a fast path! Remove me ASAP!
- assert(_num_rx_free_segs >= _rx_free_bufs.size());
-
- _num_rx_free_segs -= _rx_free_bufs.size();
- _rx_free_bufs.clear();
-
- // TODO: assert() in a fast path! Remove me ASAP!
- assert((_rx_free_pkts.empty() && !_num_rx_free_segs) ||
- (!_rx_free_pkts.empty() && _num_rx_free_segs));
- }
- }
-
- return _num_rx_free_segs >= rx_gc_thresh;
-}
-
-
-void DPDKQueuePair::process_packets(
- struct rte_mbuf **bufs, uint16_t count)
-{
- uint64_t nr_frags = 0, bytes = 0;
-
- for (uint16_t i = 0; i < count; i++) {
- struct rte_mbuf *m = bufs[i];
- offload_info oi;
-
- Tub<Packet> p = from_mbuf(m);
-
- // Drop the packet if translation above has failed
- if (!p) {
- perf_logger->inc(l_dpdk_qp_rx_no_memory_errors);
- continue;
- }
- // ldout(cct, 0) << __func__ << " len " << p->len() << " " << dendl;
-
- nr_frags += m->nb_segs;
- bytes += m->pkt_len;
-
- // Set stipped VLAN value if available
- if ((_dev->_dev_info.rx_offload_capa & DEV_RX_OFFLOAD_VLAN_STRIP) &&
- (m->ol_flags & PKT_RX_VLAN_PKT)) {
- oi.vlan_tci = m->vlan_tci;
- }
-
- if (_dev->get_hw_features().rx_csum_offload) {
- if (m->ol_flags & (PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD)) {
- // Packet with bad checksum, just drop it.
- perf_logger->inc(l_dpdk_qp_rx_bad_checksum_errors);
- continue;
- }
- // Note that when _hw_features.rx_csum_offload is on, the receive
- // code for ip, tcp and udp will assume they don't need to check
- // the checksum again, because we did this here.
- }
-
- p->set_offload_info(oi);
- if (m->ol_flags & PKT_RX_RSS_HASH) {
- p->set_rss_hash(m->hash.rss);
- }
-
- _dev->l2receive(_qid, std::move(*p));
- }
-
- perf_logger->inc(l_dpdk_qp_rx_packets, count);
- perf_logger->set(l_dpdk_qp_rx_last_bunch, count);
- perf_logger->inc(l_dpdk_qp_rx_fragments, nr_frags);
- perf_logger->inc(l_dpdk_qp_rx_bytes, bytes);
-}
-
-bool DPDKQueuePair::poll_rx_once()
-{
- struct rte_mbuf *buf[packet_read_size];
-
- /* read a port */
-#ifdef CEPH_PERF_DEV
- uint64_t start = Cycles::rdtsc();
-#endif
- uint16_t count = rte_eth_rx_burst(_dev_port_idx, _qid,
- buf, packet_read_size);
-
- /* Now process the NIC packets read */
- if (likely(count > 0)) {
- process_packets(buf, count);
-#ifdef CEPH_PERF_DEV
- rx_cycles = Cycles::rdtsc() - start;
- rx_count += count;
-#endif
- }
-#ifdef CEPH_PERF_DEV
- else {
- if (rx_count > 10000 && tx_count) {
- ldout(cct, 0) << __func__ << " rx count=" << rx_count << " avg rx=" << Cycles::to_nanoseconds(rx_cycles)/rx_count << "ns "
- << " tx count=" << tx_count << " avg tx=" << Cycles::to_nanoseconds(tx_cycles)/tx_count << "ns"
- << dendl;
- rx_count = rx_cycles = tx_count = tx_cycles = 0;
- }
- }
-#endif
-
- return count;
-}
-
-DPDKQueuePair::tx_buf_factory::tx_buf_factory(CephContext *c,
- DPDKDevice *dev, uint8_t qid): cct(c)
-{
- std::string name = std::string(pktmbuf_pool_name) + std::to_string(qid) + "_tx";
-
- _pool = rte_mempool_lookup(name.c_str());
- if (!_pool) {
- ldout(cct, 0) << __func__ << " Creating Tx mbuf pool '" << name.c_str()
- << "' [" << mbufs_per_queue_tx << " mbufs] ..." << dendl;
- //
- // We are going to push the buffers from the mempool into
- // the circular_buffer and then poll them from there anyway, so
- // we prefer to make a mempool non-atomic in this case.
- //
- _pool = rte_mempool_create(name.c_str(),
- mbufs_per_queue_tx, inline_mbuf_size,
- mbuf_cache_size,
- sizeof(struct rte_pktmbuf_pool_private),
- rte_pktmbuf_pool_init, nullptr,
- rte_pktmbuf_init, nullptr,
- rte_socket_id(), 0);
-
- if (!_pool) {
- lderr(cct) << __func__ << " Failed to create mempool for Tx" << dendl;
- ceph_abort();
- }
- if (rte_eth_tx_queue_setup(dev->port_idx(), qid, default_ring_size,
- rte_eth_dev_socket_id(dev->port_idx()),
- dev->def_tx_conf()) < 0) {
- lderr(cct) << __func__ << " cannot initialize tx queue" << dendl;
- ceph_abort();
- }
- }
-
- //
- // Fill the factory with the buffers from the mempool allocated
- // above.
- //
- init_factory();
-}
-
-bool DPDKQueuePair::tx_buf::i40e_should_linearize(rte_mbuf *head)
-{
- bool is_tso = head->ol_flags & PKT_TX_TCP_SEG;
-
- // For a non-TSO case: number of fragments should not exceed 8
- if (!is_tso){
- return head->nb_segs > i40e_max_xmit_segment_frags;
- }
-
- //
- // For a TSO case each MSS window should not include more than 8
- // fragments including headers.
- //
-
- // Calculate the number of frags containing headers.
- //
- // Note: we support neither VLAN nor tunneling thus headers size
- // accounting is super simple.
- //
- size_t headers_size = head->l2_len + head->l3_len + head->l4_len;
- unsigned hdr_frags = 0;
- size_t cur_payload_len = 0;
- rte_mbuf *cur_seg = head;
-
- while (cur_seg && cur_payload_len < headers_size) {
- cur_payload_len += cur_seg->data_len;
- cur_seg = cur_seg->next;
- hdr_frags++;
- }
-
- //
- // Header fragments will be used for each TSO segment, thus the
- // maximum number of data segments will be 8 minus the number of
- // header fragments.
- //
- // It's unclear from the spec how the first TSO segment is treated
- // if the last fragment with headers contains some data bytes:
- // whether this fragment will be accounted as a single fragment or
- // as two separate fragments. We prefer to play it safe and assume
- // that this fragment will be accounted as two separate fragments.
- //
- size_t max_win_size = i40e_max_xmit_segment_frags - hdr_frags;
-
- if (head->nb_segs <= max_win_size) {
- return false;
- }
-
- // Get the data (without headers) part of the first data fragment
- size_t prev_frag_data = cur_payload_len - headers_size;
- auto mss = head->tso_segsz;
-
- while (cur_seg) {
- unsigned frags_in_seg = 0;
- size_t cur_seg_size = 0;
-
- if (prev_frag_data) {
- cur_seg_size = prev_frag_data;
- frags_in_seg++;
- prev_frag_data = 0;
- }
-
- while (cur_seg_size < mss && cur_seg) {
- cur_seg_size += cur_seg->data_len;
- cur_seg = cur_seg->next;
- frags_in_seg++;
-
- if (frags_in_seg > max_win_size) {
- return true;
- }
- }
-
- if (cur_seg_size > mss) {
- prev_frag_data = cur_seg_size - mss;
- }
- }
-
- return false;
-}
-
-void DPDKQueuePair::tx_buf::set_cluster_offload_info(const Packet& p, const DPDKQueuePair& qp, rte_mbuf* head)
-{
- // Handle TCP checksum offload
- auto oi = p.offload_info();
- if (oi.needs_ip_csum) {
- head->ol_flags |= PKT_TX_IP_CKSUM;
- // TODO: Take a VLAN header into an account here
- head->l2_len = sizeof(struct ether_hdr);
- head->l3_len = oi.ip_hdr_len;
- }
- if (qp.port().get_hw_features().tx_csum_l4_offload) {
- if (oi.protocol == ip_protocol_num::tcp) {
- head->ol_flags |= PKT_TX_TCP_CKSUM;
- // TODO: Take a VLAN header into an account here
- head->l2_len = sizeof(struct ether_hdr);
- head->l3_len = oi.ip_hdr_len;
-
- if (oi.tso_seg_size) {
- assert(oi.needs_ip_csum);
- head->ol_flags |= PKT_TX_TCP_SEG;
- head->l4_len = oi.tcp_hdr_len;
- head->tso_segsz = oi.tso_seg_size;
- }
- }
- }
-}
-
-DPDKQueuePair::tx_buf* DPDKQueuePair::tx_buf::from_packet_zc(
- CephContext *cct, Packet&& p, DPDKQueuePair& qp)
-{
- // Too fragmented - linearize
- if (p.nr_frags() > max_frags) {
- p.linearize();
- qp.perf_logger->inc(l_dpdk_qp_tx_linearize_ops);
- }
-
- build_mbuf_cluster:
- rte_mbuf *head = nullptr, *last_seg = nullptr;
- unsigned nsegs = 0;
-
- //
- // Create a HEAD of the fragmented packet: check if frag0 has to be
- // copied and if yes - send it in a copy way
- //
- if (!check_frag0(p)) {
- if (!copy_one_frag(qp, p.frag(0), head, last_seg, nsegs)) {
- ldout(cct, 1) << __func__ << " no available mbuf for " << p.frag(0).size << dendl;
- return nullptr;
- }
- } else if (!translate_one_frag(qp, p.frag(0), head, last_seg, nsegs)) {
- ldout(cct, 1) << __func__ << " no available mbuf for " << p.frag(0).size << dendl;
- return nullptr;
- }
-
- unsigned total_nsegs = nsegs;
-
- for (unsigned i = 1; i < p.nr_frags(); i++) {
- rte_mbuf *h = nullptr, *new_last_seg = nullptr;
- if (!translate_one_frag(qp, p.frag(i), h, new_last_seg, nsegs)) {
- ldout(cct, 1) << __func__ << " no available mbuf for " << p.frag(i).size << dendl;
- me(head)->recycle();
- return nullptr;
- }
-
- total_nsegs += nsegs;
-
- // Attach a new buffers' chain to the packet chain
- last_seg->next = h;
- last_seg = new_last_seg;
- }
-
- // Update the HEAD buffer with the packet info
- head->pkt_len = p.len();
- head->nb_segs = total_nsegs;
-
- set_cluster_offload_info(p, qp, head);
-
- //
- // If a packet hasn't been linearized already and the resulting
- // cluster requires the linearisation due to HW limitation:
- //
- // - Recycle the cluster.
- // - Linearize the packet.
- // - Build the cluster once again
- //
- if (head->nb_segs > max_frags ||
- (p.nr_frags() > 1 && qp.port().is_i40e_device() && i40e_should_linearize(head)) ||
- (p.nr_frags() > vmxnet3_max_xmit_segment_frags && qp.port().is_vmxnet3_device())) {
- me(head)->recycle();
- p.linearize();
- qp.perf_logger->inc(l_dpdk_qp_tx_linearize_ops);
-
- goto build_mbuf_cluster;
- }
-
- me(last_seg)->set_packet(std::move(p));
-
- return me(head);
-}
-
-void DPDKQueuePair::tx_buf::copy_packet_to_cluster(const Packet& p, rte_mbuf* head)
-{
- rte_mbuf* cur_seg = head;
- size_t cur_seg_offset = 0;
- unsigned cur_frag_idx = 0;
- size_t cur_frag_offset = 0;
-
- while (true) {
- size_t to_copy = std::min(p.frag(cur_frag_idx).size - cur_frag_offset,
- inline_mbuf_data_size - cur_seg_offset);
-
- memcpy(rte_pktmbuf_mtod_offset(cur_seg, void*, cur_seg_offset),
- p.frag(cur_frag_idx).base + cur_frag_offset, to_copy);
-
- cur_frag_offset += to_copy;
- cur_seg_offset += to_copy;
-
- if (cur_frag_offset >= p.frag(cur_frag_idx).size) {
- ++cur_frag_idx;
- if (cur_frag_idx >= p.nr_frags()) {
- //
- // We are done - set the data size of the last segment
- // of the cluster.
- //
- cur_seg->data_len = cur_seg_offset;
- break;
- }
-
- cur_frag_offset = 0;
- }
-
- if (cur_seg_offset >= inline_mbuf_data_size) {
- cur_seg->data_len = inline_mbuf_data_size;
- cur_seg = cur_seg->next;
- cur_seg_offset = 0;
-
- // FIXME: assert in a fast-path - remove!!!
- assert(cur_seg);
- }
- }
-}
-
-DPDKQueuePair::tx_buf* DPDKQueuePair::tx_buf::from_packet_copy(Packet&& p, DPDKQueuePair& qp)
-{
- // sanity
- if (!p.len()) {
- return nullptr;
- }
-
- /*
- * Here we are going to use the fact that the inline data size is a
- * power of two.
- *
- * We will first try to allocate the cluster and only if we are
- * successful - we will go and copy the data.
- */
- auto aligned_len = align_up((size_t)p.len(), inline_mbuf_data_size);
- unsigned nsegs = aligned_len / inline_mbuf_data_size;
- rte_mbuf *head = nullptr, *last_seg = nullptr;
-
- tx_buf* buf = qp.get_tx_buf();
- if (!buf) {
- return nullptr;
- }
-
- head = buf->rte_mbuf_p();
- last_seg = head;
- for (unsigned i = 1; i < nsegs; i++) {
- buf = qp.get_tx_buf();
- if (!buf) {
- me(head)->recycle();
- return nullptr;
- }
-
- last_seg->next = buf->rte_mbuf_p();
- last_seg = last_seg->next;
- }
-
- //
- // If we've got here means that we have succeeded already!
- // We only need to copy the data and set the head buffer with the
- // relevant info.
- //
- head->pkt_len = p.len();
- head->nb_segs = nsegs;
-
- copy_packet_to_cluster(p, head);
- set_cluster_offload_info(p, qp, head);
-
- return me(head);
-}
-
-size_t DPDKQueuePair::tx_buf::copy_one_data_buf(
- DPDKQueuePair& qp, rte_mbuf*& m, char* data, size_t buf_len)
-{
- tx_buf* buf = qp.get_tx_buf();
- if (!buf) {
- return 0;
- }
-
- size_t len = std::min(buf_len, inline_mbuf_data_size);
-
- m = buf->rte_mbuf_p();
-
- // mbuf_put()
- m->data_len = len;
- m->pkt_len = len;
-
- qp.perf_logger->inc(l_dpdk_qp_tx_copy_ops);
- qp.perf_logger->inc(l_dpdk_qp_tx_copy_bytes, len);
-
- memcpy(rte_pktmbuf_mtod(m, void*), data, len);
-
- return len;
-}
-
-void DPDKDevice::set_rss_table()
-{
- // always fill our local indirection table.
- unsigned i = 0;
- for (auto& r : _redir_table) {
- r = i++ % _num_queues;
- }
-
- if (_dev_info.reta_size == 0)
- return;
-
- int reta_conf_size = std::max(1, _dev_info.reta_size / RTE_RETA_GROUP_SIZE);
- rte_eth_rss_reta_entry64 reta_conf[reta_conf_size];
-
- // Configure the HW indirection table
- i = 0;
- for (auto& x : reta_conf) {
- x.mask = ~0ULL;
- for (auto& r: x.reta) {
- r = i++ % _num_queues;
- }
- }
-
- if (rte_eth_dev_rss_reta_update(_port_idx, reta_conf, _dev_info.reta_size)) {
- rte_exit(EXIT_FAILURE, "Port %d: Failed to update an RSS indirection table", _port_idx);
- }
-}
-
-/******************************** Interface functions *************************/
-
-std::unique_ptr<DPDKDevice> create_dpdk_net_device(
- CephContext *cct,
- unsigned cores,
- uint8_t port_idx,
- bool use_lro,
- bool enable_fc)
-{
- // Check that we have at least one DPDK-able port
- if (rte_eth_dev_count() == 0) {
- rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
- } else {
- ldout(cct, 10) << __func__ << " ports number: " << int(rte_eth_dev_count()) << dendl;
- }
-
- return std::unique_ptr<DPDKDevice>(
- new DPDKDevice(cct, port_idx, cores, use_lro, enable_fc));
-}
Code Review / stor4nfv.git / blobdiff