From: Ferruh Yigit <ferruh.yigit@amd.com>
To: Dongdong Liu <liudongdong3@huawei.com>,
dev@dpdk.org, thomas@monjalon.net, andrew.rybchenko@oktetlabs.ru
Cc: stable@dpdk.org, yisen.zhuang@huawei.com, lihuisong@huawei.com,
Ori Kam <orika@nvidia.com>
Subject: Re: [PATCH 06/16] net/hns3: separate the setting of hash algorithm
Date: Fri, 10 Mar 2023 19:36:47 +0000 [thread overview]
Message-ID: <db66718c-e1b7-a619-9da5-6d663bacf160@amd.com> (raw)
In-Reply-To: <20230310093518.5198-7-liudongdong3@huawei.com>
On 3/10/2023 9:35 AM, Dongdong Liu wrote:
> From: Huisong Li <lihuisong@huawei.com>
>
> Currently, the setting of hash algorithm comes from the
> default configuration in driver and the rte_flow interface.
> The hash algorithm that is set to hardware in both ways is
> saved in hw->rss_info.conf.func.
>
> But the 'func' in struct rte_flow_action_rss is usually used
> in rte flow interface. And the ethdev ops interface may also
> set hash algorithm in the future. It is not appropriate and
> is a little messy for ethdev ops interface and driver default
> configuration to use struct rte_flow_action_rss. So we have
> to separate the RSS configuration from ethdev ops and rte
> flow interface to make codes more easier to maintain.
>
Agree that it is not ideal to have two different ways for same/similar
control path functionality in ethdev.
+Ori to discuss if this is a common problem and can be resolved in
ethdev layer.
I can see some of remaining patches are related to this ethdev / flow
API RSS separation. I will continue with this set, but I believe it is
better if this issue addressed in higher level.
> This patch separates hash algorithm by following ways:
> 1) 'hash_algo' in struct hns3_rss_conf is used for ethdev ops
> interface or default configuration in driver.
> 2) Add a 'rte_flow_hash_algo' field in struct hns3_rss_conf
> to save algorithm from rte flow interface. The main reasons
> are as follows:
> Currently, only the last rule is used to restore the rte
> flow rule. If 'func' in RSS action is 'DEFAULT', it means
> that this rule doesn't modify algorithm and driver need to
> save current algorithm for restoring algorithm during reset
> phase.
>
> Fixes: c37ca66f2b27 ("net/hns3: support RSS")
> Cc: stable@dpdk.org
>
> Signed-off-by: Huisong Li <lihuisong@huawei.com>
> Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
<...>
next prev parent reply other threads:[~2023-03-10 19:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-10 9:35 [PATCH 00/16] net/hns3: some code refactor for hns3 RSS Dongdong Liu
2023-03-10 9:35 ` [PATCH 01/16] net/hns3: fix possible truncation of hash key when config Dongdong Liu
2023-03-10 19:36 ` Ferruh Yigit
2023-03-29 1:56 ` lihuisong (C)
2023-03-10 9:35 ` [PATCH 02/16] net/hns3: fix possible truncation of redirection table Dongdong Liu
2023-03-10 19:36 ` Ferruh Yigit
2023-03-10 9:35 ` [PATCH 03/16] net/hns3: use hardware config to report hash key Dongdong Liu
2023-03-10 9:35 ` [PATCH 04/16] net/hns3: use hardware config to report hash types Dongdong Liu
2023-03-10 9:35 ` [PATCH 05/16] net/hns3: use hardware config to report redirection table Dongdong Liu
2023-03-10 9:35 ` [PATCH 06/16] net/hns3: separate the setting of hash algorithm Dongdong Liu
2023-03-10 19:36 ` Ferruh Yigit [this message]
2023-03-29 1:58 ` lihuisong (C)
2023-03-29 8:13 ` Ferruh Yigit
2023-03-10 9:35 ` [PATCH 07/16] net/hns3: separate the setting of hash key Dongdong Liu
2023-03-10 9:35 ` [PATCH 08/16] net/hns3: separate the setting of redirection table Dongdong Liu
2023-03-10 9:35 ` [PATCH 09/16] net/hns3: separate the setting of RSS types Dongdong Liu
2023-03-10 9:35 ` [PATCH 10/16] net/hns3: separate the setting and clearing of RSS rule Dongdong Liu
2023-03-10 9:35 ` [PATCH 11/16] net/hns3: use new RSS rule to configure hardware Dongdong Liu
2023-03-10 9:35 ` [PATCH 12/16] net/hns3: save hash algo to RSS filter list node Dongdong Liu
2023-03-10 9:35 ` [PATCH 13/16] net/hns3: adding queue buffer size hash rule allowed Dongdong Liu
2023-03-10 9:35 ` [PATCH 14/16] net/hns3: separate rte flow RSS config from hns3 rss conf Dongdong Liu
2023-03-10 9:35 ` [PATCH 15/16] net/hns3: reimplement hash flow function Dongdong Liu
2023-03-10 9:35 ` [PATCH 16/16] net/hns3: add the verification of RSS types Dongdong Liu
2023-03-10 20:58 ` [PATCH 00/16] net/hns3: some code refactor for hns3 RSS Ferruh Yigit
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