DPDK patches and discussions
 help / color / mirror / Atom feed
From: "Min Hu (Connor)" <humin29@huawei.com>
To: Chengchang Tang <tangchengchang@huawei.com>, <dev@dpdk.org>
Cc: <linuxarm@huawei.com>, <chas3@att.com>, <ferruh.yigit@intel.com>,
	<konstantin.ananyev@intel.com>
Subject: Re: [dpdk-dev] [PATCH 0/2] add Tx prepare support for bonding device
Date: Fri, 30 Apr 2021 14:47:30 +0800
Message-ID: <440ca32c-6564-269a-afd8-57bb561357c7@huawei.com> (raw)
In-Reply-To: <46d7ca0a-155b-d7d2-72da-5a3bdf15d0d6@huawei.com>



在 2021/4/30 14:26, Chengchang Tang 写道:
> Hi,all
> Any comments?
> 
> On 2021/4/23 17:46, Chengchang Tang wrote:
>> This patch set add Tx prepare for bonding device.
>>
>> Currently, the bonding driver has not implemented the callback of
>> rte_eth_tx_prepare function. Therefore, the TX prepare function of the
>> slave devices will never be invoked. When hardware offloading such as
>> CKSUM and TSO are enabled for some drivers, tx_prepare needs to be used
>> to adjust packets (for example, set correct pseudo packet headers).
>> Otherwise, related offloading fails and even packets are sent
>> incorrectly. Due to this limitation, the bonded device cannot use these
>> HW offloading in the Tx direction.
>>
>> Because packet sending algorithms are numerous and complex in bond PMD,
>> it is hard to design the callback for rte_eth_tx_prepare. In this
>> patchset, the tx_prepare callback of bonding PMD is not implemented.
>> Instead, rte_eth_tx_prepare has been called in tx_burst callback. In
>> this way, all tx_offloads can be processed correctly for all NIC devices.
>> It is the responsibility of the slave PMDs to decide when the real
>> tx_prepare needs to be used. If tx_prepare is not required in some cases,
>> then slave PMDs tx_prepare pointer should be NULL and rte_eth_tx_prepare()
>> will be just a NOOP. That is, the effectiveness and security of tx_prepare
>> and its impact on performance depend on the design of slave PMDs.
>>
>> And configuring Tx offloading for bonding is also added in this patchset.
>> This solves the problem that we need to configure slave devices one by one
>> when configuring Tx offloading.
>>
>> Chengchang Tang (2):
>>    net/bonding: support Tx prepare for bonding
>>    net/bonding: support configuring Tx offloading for bonding
>>
>>   drivers/net/bonding/rte_eth_bond.h     |  1 -
>>   drivers/net/bonding/rte_eth_bond_pmd.c | 41 ++++++++++++++++++++++++++++++----
>>   2 files changed, 37 insertions(+), 5 deletions(-)
>>
Acked-by: Min Hu (Connor) <humin29@huawei.com>
>> --
>> 2.7.4
>>
>>
>> .
>>
> 
> .
> 

  reply	other threads:[~2021-04-30  6:47 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-16 11:04 [dpdk-dev] [RFC " Chengchang Tang
2021-04-16 11:04 ` [dpdk-dev] [RFC 1/2] net/bonding: add Tx prepare for bonding Chengchang Tang
2021-04-16 11:04 ` [dpdk-dev] [RFC 2/2] app/testpmd: add cmd for bonding Tx prepare Chengchang Tang
2021-04-16 11:12 ` [dpdk-dev] [RFC 0/2] add Tx prepare support for bonding device Min Hu (Connor)
2021-04-20  1:26 ` Ferruh Yigit
2021-04-20  2:44   ` Chengchang Tang
2021-04-20  8:33     ` Ananyev, Konstantin
2021-04-20 12:44       ` Chengchang Tang
2021-04-20 13:18         ` Ananyev, Konstantin
2021-04-20 14:06           ` Chengchang Tang
2021-04-23  9:46 ` [dpdk-dev] [PATCH " Chengchang Tang
2021-04-23  9:46   ` [dpdk-dev] [PATCH 1/2] net/bonding: support Tx prepare for bonding Chengchang Tang
2021-06-08  9:49     ` Andrew Rybchenko
2021-06-09  6:42       ` Chengchang Tang
2021-06-09  9:35         ` Andrew Rybchenko
2021-06-10  7:32           ` Chengchang Tang
2021-06-14 14:16             ` Andrew Rybchenko
2021-06-09 10:25         ` Ananyev, Konstantin
2021-06-10  6:46           ` Chengchang Tang
2021-06-14 11:36             ` Ananyev, Konstantin
2021-04-23  9:46   ` [dpdk-dev] [PATCH 2/2] net/bonding: support configuring Tx offloading " Chengchang Tang
2021-06-08  9:49     ` Andrew Rybchenko
2021-06-09  6:57       ` Chengchang Tang
2021-06-09  9:11         ` Ananyev, Konstantin
2021-06-09  9:37           ` Andrew Rybchenko
2021-06-10  6:29             ` Chengchang Tang
2021-06-14 11:05               ` Ananyev, Konstantin
2021-06-14 14:13                 ` Andrew Rybchenko
2021-04-30  6:26   ` [dpdk-dev] [PATCH 0/2] add Tx prepare support for bonding device Chengchang Tang
2021-04-30  6:47     ` Min Hu (Connor) [this message]
2021-06-03  1:44   ` Chengchang Tang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=440ca32c-6564-269a-afd8-57bb561357c7@huawei.com \
    --to=humin29@huawei.com \
    --cc=chas3@att.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=konstantin.ananyev@intel.com \
    --cc=linuxarm@huawei.com \
    --cc=tangchengchang@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK patches and discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git