From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Konstantin Ananyev <konstantin.ananyev@intel.com>, <dev@dpdk.org>
Cc: <xiaoyun.li@intel.com>, <anoobj@marvell.com>,
<jerinj@marvell.com>, <ndabilpuram@marvell.com>,
<adwivedi@marvell.com>, <shepard.siegel@atomicrules.com>,
<ed.czeck@atomicrules.com>, <john.miller@atomicrules.com>,
<irusskikh@marvell.com>, <ajit.khaparde@broadcom.com>,
<somnath.kotur@broadcom.com>, <rahul.lakkireddy@chelsio.com>,
<hemant.agrawal@nxp.com>, <sachin.saxena@oss.nxp.com>,
<haiyue.wang@intel.com>, <johndale@cisco.com>,
<hyonkim@cisco.com>, <qi.z.zhang@intel.com>,
<xiao.w.wang@intel.com>, <humin29@huawei.com>,
<yisen.zhuang@huawei.com>, <oulijun@huawei.com>,
<beilei.xing@intel.com>, <jingjing.wu@intel.com>,
<qiming.yang@intel.com>, <matan@nvidia.com>,
<viacheslavo@nvidia.com>, <sthemmin@microsoft.com>,
<longli@microsoft.com>, <heinrich.kuhn@corigine.com>,
<kirankumark@marvell.com>, <andrew.rybchenko@oktetlabs.ru>,
<mczekaj@marvell.com>, <jiawenwu@trustnetic.com>,
<jianwang@trustnetic.com>, <maxime.coquelin@redhat.com>,
<chenbo.xia@intel.com>, <thomas@monjalon.net>, <mdr@ashroe.eu>,
<jay.jayatheerthan@intel.com>
Subject: Re: [dpdk-dev] [PATCH v3 0/7] hide eth dev related structures
Date: Fri, 1 Oct 2021 18:02:34 +0100 [thread overview]
Message-ID: <ec87f41e-c257-58f9-3ba7-6323b9d6f982@intel.com> (raw)
In-Reply-To: <20211001140255.5726-1-konstantin.ananyev@intel.com>
On 10/1/2021 3:02 PM, Konstantin Ananyev wrote:
> v3 changes:
> - Changes in public struct naming (Jerin/Haiyue)
> - Split patches
> - Update docs
> - Shamelessly included Andrew's patch:
> https://patches.dpdk.org/project/dpdk/patch/20210928154856.1015020-1-andrew.rybchenko@oktetlabs.ru/
> into these series.
> I have to do similar thing here, so decided to avoid duplicated effort.
>
> The aim of these patch series is to make rte_ethdev core data structures
> (rte_eth_dev, rte_eth_dev_data, rte_eth_rxtx_callback, etc.) internal to
> DPDK and not visible to the user.
> That should allow future possible changes to core ethdev related structures
> to be transparent to the user and help to improve ABI/API stability.
> Note that current ethdev API is preserved, but it is a formal ABI break.
>
> The work is based on previous discussions at:
> https://www.mail-archive.com/dev@dpdk.org/msg211405.html
> https://www.mail-archive.com/dev@dpdk.org/msg216685.html
> and consists of the following main points:
> 1. Copy public 'fast' function pointers (rx_pkt_burst(), etc.) and
> related data pointer from rte_eth_dev into a separate flat array.
> We keep it public to still be able to use inline functions for these
> 'fast' calls (like rte_eth_rx_burst(), etc.) to avoid/minimize slowdown.
> Note that apart from function pointers itself, each element of this
> flat array also contains two opaque pointers for each ethdev:
> 1) a pointer to an array of internal queue data pointers
> 2) points to array of queue callback data pointers.
> Note that exposing this extra information allows us to avoid extra
> changes inside PMD level, plus should help to avoid possible
> performance degradation.
> 2. Change implementation of 'fast' inline ethdev functions
> (rte_eth_rx_burst(), etc.) to use new public flat array.
> While it is an ABI breakage, this change is intended to be transparent
> for both users (no changes in user app is required) and PMD developers
> (no changes in PMD is required).
> One extra note - with new implementation RX/TX callback invocation
> will cost one extra function call with this changes. That might cause
> some slowdown for code-path with RX/TX callbacks heavily involved.
> Hope such trade-off is acceptable for the community.
> 3. Move rte_eth_dev, rte_eth_dev_data, rte_eth_rxtx_callback and related
> things into internal header: <ethdev_driver.h>.
>
> That approach was selected to:
> - Avoid(/minimize) possible performance losses.
> - Minimize required changes inside PMDs.
>
Overall +1 to the approach.
Only 'metrics' library is failing to build and it also needs to include driver
header:
diff --git a/lib/metrics/rte_metrics_telemetry.c
b/lib/metrics/rte_metrics_telemetry.c
index 269f8ef6135c..5be21b2e86c5 100644
--- a/lib/metrics/rte_metrics_telemetry.c
+++ b/lib/metrics/rte_metrics_telemetry.c
@@ -2,7 +2,7 @@
* Copyright(c) 2020 Intel Corporation
*/
-#include <rte_ethdev.h>
+#include <ethdev_driver.h>
#include <rte_string_fns.h>
#ifdef RTE_LIB_TELEMETRY
#include <telemetry_internal.h>
> Performance testing results (ICX 2.0GHz, E810 (ice)):
> - testpmd macswap fwd mode, plus
> a) no RX/TX callbacks:
> no actual slowdown observed
> b) bpf-load rx 0 0 JM ./dpdk.org/examples/bpf/t3.o:
> ~2% slowdown
> - l3fwd: no actual slowdown observed
>
> Would like to thank Ferruh and Jerrin for reviewing and testing previous
> versions of these series. All other interested parties please don't be shy
> and provide your feedback.
>
> Konstantin Ananyev (7):
> ethdev: allocate max space for internal queue array
> ethdev: change input parameters for rx_queue_count
> ethdev: copy ethdev 'fast' API into separate structure
> ethdev: make burst functions to use new flat array
> ethdev: add API to retrieve multiple ethernet addresses
> ethdev: remove legacy Rx descriptor done API
> ethdev: hide eth dev related structures
>
<...>
next prev parent reply other threads:[~2021-10-01 17:04 UTC|newest]
Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-20 16:28 [dpdk-dev] [RFC " Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 1/7] eth: move ethdev 'burst' API into separate structure Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 2/7] eth: make drivers to use new API for Rx Konstantin Ananyev
2021-09-06 18:41 ` Ferruh Yigit
2021-09-14 14:28 ` Ananyev, Konstantin
2021-08-20 16:28 ` [dpdk-dev] [RFC 3/7] eth: make drivers to use new API for Tx Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 4/7] eth: make drivers to use new API for Tx prepare Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 5/7] eth: make drivers to use new API to obtain descriptor status Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 6/7] eth: make drivers to use new API for Rx queue count Konstantin Ananyev
2021-08-20 16:28 ` [dpdk-dev] [RFC 7/7] eth: hide eth dev related structures Konstantin Ananyev
2021-08-26 12:37 ` [dpdk-dev] [RFC 0/7] " Jerin Jacob
2021-09-06 18:09 ` Ferruh Yigit
2021-09-14 13:33 ` Ananyev, Konstantin
2021-09-15 9:45 ` Jerin Jacob
2021-09-22 15:08 ` Ananyev, Konstantin
2021-09-27 16:14 ` Jerin Jacob
2021-09-28 9:37 ` Ananyev, Konstantin
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 0/5] " Konstantin Ananyev
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 1/5] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 2/5] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-09-23 5:51 ` Wang, Haiyue
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 3/5] ethdev: copy ethdev 'burst' API into separate structure Konstantin Ananyev
2021-09-23 5:58 ` Wang, Haiyue
2021-09-27 18:01 ` Jerin Jacob
2021-09-28 9:42 ` Ananyev, Konstantin
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 4/5] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-09-22 14:09 ` [dpdk-dev] [RFC v2 5/5] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 0/7] " Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 1/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-01 16:48 ` Ferruh Yigit
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 2/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 3/7] ethdev: copy ethdev 'fast' API into separate structure Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 4/7] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-10-01 16:46 ` Ferruh Yigit
2021-10-01 17:40 ` Ananyev, Konstantin
2021-10-04 8:46 ` Ferruh Yigit
2021-10-04 9:20 ` Ananyev, Konstantin
2021-10-04 10:13 ` Ferruh Yigit
2021-10-04 11:17 ` Ananyev, Konstantin
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 5/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 6/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-01 14:02 ` [dpdk-dev] [PATCH v3 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-01 16:53 ` Ferruh Yigit
2021-10-01 17:04 ` Ferruh Yigit
2021-10-01 17:02 ` Ferruh Yigit [this message]
2021-10-04 13:55 ` [dpdk-dev] [PATCH v4 0/7] " Konstantin Ananyev
2021-10-04 13:55 ` [dpdk-dev] [PATCH v4 1/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-05 12:09 ` Thomas Monjalon
2021-10-05 16:45 ` Ananyev, Konstantin
2021-10-05 16:49 ` Thomas Monjalon
2021-10-05 12:21 ` Thomas Monjalon
2021-10-04 13:55 ` [dpdk-dev] [PATCH v4 2/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-04 13:55 ` [dpdk-dev] [PATCH v4 3/7] ethdev: copy ethdev 'fast' API into separate structure Konstantin Ananyev
2021-10-05 13:09 ` Thomas Monjalon
2021-10-05 16:41 ` Ananyev, Konstantin
2021-10-05 16:48 ` Thomas Monjalon
2021-10-05 17:04 ` Ananyev, Konstantin
2021-10-04 13:56 ` [dpdk-dev] [PATCH v4 4/7] ethdev: make burst functions to use new flat array Konstantin Ananyev
2021-10-05 9:54 ` David Marchand
2021-10-05 10:13 ` Ananyev, Konstantin
2021-10-04 13:56 ` [dpdk-dev] [PATCH v4 5/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-05 13:13 ` Thomas Monjalon
2021-10-05 16:35 ` Ananyev, Konstantin
2021-10-05 16:45 ` Thomas Monjalon
2021-10-05 17:12 ` Ananyev, Konstantin
2021-10-05 17:41 ` Thomas Monjalon
2021-10-04 13:56 ` [dpdk-dev] [PATCH v4 6/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-05 13:14 ` Thomas Monjalon
2021-10-05 16:21 ` Ananyev, Konstantin
2021-10-04 13:56 ` [dpdk-dev] [PATCH v4 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-05 10:04 ` David Marchand
2021-10-05 10:43 ` Ferruh Yigit
2021-10-05 11:37 ` David Marchand
2021-10-05 15:57 ` Ananyev, Konstantin
2021-10-05 13:24 ` Thomas Monjalon
2021-10-05 16:19 ` Ananyev, Konstantin
2021-10-05 16:25 ` Thomas Monjalon
2021-10-06 16:42 ` [dpdk-dev] [PATCH v4 0/7] " Ali Alnubani
2021-10-06 17:26 ` Ali Alnubani
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 " Konstantin Ananyev
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 1/7] ethdev: remove legacy Rx descriptor done API Konstantin Ananyev
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 2/7] ethdev: allocate max space for internal queue array Konstantin Ananyev
2021-10-11 9:20 ` Andrew Rybchenko
2021-10-11 16:25 ` Ananyev, Konstantin
2021-10-11 17:15 ` Andrew Rybchenko
2021-10-11 23:06 ` Ananyev, Konstantin
2021-10-12 5:47 ` Andrew Rybchenko
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 3/7] ethdev: change input parameters for rx_queue_count Konstantin Ananyev
2021-10-11 8:06 ` Andrew Rybchenko
2021-10-12 17:59 ` Hyong Youb Kim (hyonkim)
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 4/7] ethdev: copy fast-path API into separate structure Konstantin Ananyev
2021-10-09 12:05 ` fengchengwen
2021-10-11 1:18 ` fengchengwen
2021-10-11 8:39 ` Andrew Rybchenko
2021-10-11 15:24 ` Ananyev, Konstantin
2021-10-11 8:35 ` Andrew Rybchenko
2021-10-11 15:15 ` Ananyev, Konstantin
2021-10-11 8:25 ` Andrew Rybchenko
2021-10-11 16:52 ` Ananyev, Konstantin
2021-10-11 17:22 ` Andrew Rybchenko
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 5/7] ethdev: make fast-path functions to use new flat array Konstantin Ananyev
2021-10-11 9:02 ` Andrew Rybchenko
2021-10-11 15:47 ` Ananyev, Konstantin
2021-10-11 17:03 ` Andrew Rybchenko
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 6/7] ethdev: add API to retrieve multiple ethernet addresses Konstantin Ananyev
2021-10-11 9:09 ` Andrew Rybchenko
2021-10-07 11:27 ` [dpdk-dev] [PATCH v5 7/7] ethdev: hide eth dev related structures Konstantin Ananyev
2021-10-11 9:20 ` Andrew Rybchenko
2021-10-11 15:54 ` Ananyev, Konstantin
2021-10-11 17:04 ` Andrew Rybchenko
2021-10-08 18:13 ` [dpdk-dev] [PATCH v5 0/7] " Slava Ovsiienko
2021-10-11 9:22 ` Andrew Rybchenko
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