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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Kiran Kumar Kokkilagadda <kirankumark@marvell.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	Andrew Rybchenko <arybchenko@solarflare.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
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Subject: Re: [dpdk-dev] [EXT] Re: [PATCH v7 1/3] ethdev: add level support for RSS offload types
Date: Tue, 1 Sep 2020 15:44:38 +0100
Message-ID: <38f6c40e-b784-9da0-fdb3-0ea2e5f4413c@intel.com> (raw)
In-Reply-To: <BYAPR18MB2965E0C92CD27F91B763DF81AC2E0@BYAPR18MB2965.namprd18.prod.outlook.com>

On 9/1/2020 3:27 PM, Kiran Kumar Kokkilagadda wrote:
> 
> 
>> -----Original Message-----
>> From: Ferruh Yigit <ferruh.yigit@intel.com>
>> Sent: Tuesday, September 1, 2020 7:08 PM
>> To: Kiran Kumar Kokkilagadda <kirankumark@marvell.com>; Thomas Monjalon
>> <thomas@monjalon.net>; Andrew Rybchenko <arybchenko@solarflare.com>
>> Cc: dev@dpdk.org; Jerin Jacob Kollanukkaran <jerinj@marvell.com>;
>> orika@mellanox.com; xuanziyang2@huawei.com;
>> cloud.wangxiaoyun@huawei.com; zhouguoyang@huawei.com;
>> rosen.xu@intel.com; beilei.xing@intel.com; jia.guo@intel.com; Rasesh Mody
>> <rmody@marvell.com>; Shahed Shaikh <shshaikh@marvell.com>; Nithin Kumar
>> Dabilpuram <ndabilpuram@marvell.com>; qiming.yang@intel.com;
>> qi.z.zhang@intel.com; keith.wiles@intel.com; hemant.agrawal@nxp.com;
>> sachin.saxena@nxp.com; wei.zhao1@intel.com; johndale@cisco.com;
>> hyonkim@cisco.com; chas3@att.com; matan@mellanox.com;
>> shahafs@mellanox.com; viacheslavo@mellanox.com;
>> rahul.lakkireddy@chelsio.com; grive@u256.net; Liron Himi
>> <lironh@marvell.com>; jingjing.wu@intel.com; xavier.huwei@huawei.com;
>> humin29@huawei.com; yisen.zhuang@huawei.com;
>> ajit.khaparde@broadcom.com; somnath.kotur@broadcom.com;
>> jasvinder.singh@intel.com; cristian.dumitrescu@intel.com
>> Subject: [EXT] Re: [dpdk-dev][PATCH v7 1/3] ethdev: add level support for RSS
>> offload types
>>
>> External Email
>>
>> ----------------------------------------------------------------------
>> On 9/1/2020 4:27 AM, kirankumark@marvell.com wrote:
>>> From: Kiran Kumar K <kirankumark@marvell.com>
>>>
>>> This patch reserves 2 bits as input selection to select Inner and
>>> outer encapsulation level for RSS computation. It is combined with
>>> existing
>>> ETH_RSS_* to choose Inner or outer layers.
>>> This functionality already exists in rte_flow through level parameter
>>> in RSS action configuration rte_flow_action_rss.
>>>
>>> Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
>>> ---
>>> V7 Changes:
>>> * Re-worked to keep it in sync with rte_flow_action_rss and support
>>> upto
>>> 3 levels.
>>> * Addressed testpmd review comments.
>>>
>>>    lib/librte_ethdev/rte_ethdev.h | 27 +++++++++++++++++++++++++++
>>>    1 file changed, 27 insertions(+)
>>>
>>> diff --git a/lib/librte_ethdev/rte_ethdev.h
>>> b/lib/librte_ethdev/rte_ethdev.h index 70295d7ab..13e49bbd7 100644
>>> --- a/lib/librte_ethdev/rte_ethdev.h
>>> +++ b/lib/librte_ethdev/rte_ethdev.h
>>> @@ -552,6 +552,33 @@ struct rte_eth_rss_conf {
>>>    #define RTE_ETH_RSS_L3_PRE64	   (1ULL << 53)
>>>    #define RTE_ETH_RSS_L3_PRE96	   (1ULL << 52)
>>>
>>> +/*
>>> + * We use the following macros to combine with the above layers to
>>> +choose
>>> + * inner and outer layers or both for RSS computation.
>>> + * bit 50 and 51 are reserved for this.
>>> + */
>>> +
>>> +/** level 0, requests the default behavior. Depending on the packet
>>> + * type, it can mean outermost, innermost, anything in between or even no
>> RSS.
>>> + * It basically stands for the innermost encapsulation level RSS
>>> + * can be performed on according to PMD and device capabilities.
>>> + */
>>> +#define ETH_RSS_LEVEL_0         (0ULL << 50)
>>
>> I can see from history how this is involved, but the 'ETH_RSS_LEVEL_0' naming is
>> not really clear what it is, the naming in v6 is more clear.
>>
>> What about following one:
>> 0 -> LEVEL_PMD_DEFAULT
>> 1 -> LEVEL_OUTER
>> 2 -> LEVEL_INNER
>> 3 -> LEVEL_INNER_OUTER
>>
>> This doesn't exactly match to rte_flow one, but closer than v6 one. This ends
>> with max level 2. And defines a way to say both inner and outer.
> 
> This one looks good to me. If everyone is ok with the proposed changes, I will send V8.
> 

Let's wait for more comments before v8.

>>
>>> +
>>> +/** level 1,  requests RSS to be performed on the outermost packet
>>> + * encapsulation level.
>>> + */
>>> +#define ETH_RSS_LEVEL_1         (1ULL << 50)
>>> +
>>> +/** level 2,  requests RSS to be performed on the
>>> + * specified inner packet encapsulation level, from outermost to
>>> + * innermost (lower to higher values).
>>> + */
>>> +#define ETH_RSS_LEVEL_2	        (2ULL << 50)
>>
>> I can see you are trying to copy rte_flow usage, but this doesn't really makes
>> sense here. Where the value of the level is defined in this case? If not defined
>> how the PMD knows which level to use?
>>
>>> +#define ETH_RSS_LEVEL_MASK	(3ULL << 50)
>>> +
>>> +#define ETH_RSS_LEVEL(rss_hf) ((rss_hf & ETH_RSS_LEVEL_MASK) >> 50)
>>> +
>>>    /**
>>>     * For input set change of hash filter, if SRC_ONLY and DST_ONLY of
>>>     * the same level are used simultaneously, it is the same case as
>>> --
>>> 2.25.1
>>>
> 


  reply	other threads:[~2020-09-01 14:44 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-07 12:04 [dpdk-dev] [PATCH 1/2] " kirankumark
2020-08-07 12:04 ` [dpdk-dev] [PATCH 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-08 14:36 ` [dpdk-dev] [PATCH v2 1/2] ethdev: add level support for RSS offload types kirankumark
2020-08-08 14:36   ` [dpdk-dev] [PATCH v2 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-08 14:40   ` [dpdk-dev] [PATCH v2 1/2] ethdev: add level support for RSS offload types Ajit Khaparde
2020-08-14  3:55     ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-18  7:21   ` [dpdk-dev] [PATCH v3 " kirankumark
2020-08-18  7:21     ` [dpdk-dev] [PATCH v3 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-18 10:03       ` Jerin Jacob
2020-08-18 10:10         ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-18 10:31     ` [dpdk-dev] [PATCH v4 1/2] ethdev: add level support for RSS offload types kirankumark
2020-08-18 10:31       ` [dpdk-dev] [PATCH v4 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-18 10:52       ` [dpdk-dev] [PATCH v4 1/2] ethdev: add level support for RSS offload types Jeff Guo
2020-08-18 11:43         ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-19  6:04       ` [dpdk-dev] [PATCH v5 " kirankumark
2020-08-19  6:04         ` [dpdk-dev] [PATCH v5 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-20  3:19         ` [dpdk-dev] [PATCH v5 1/2] ethdev: add level support for RSS offload types Ajit Khaparde
2020-08-21 10:57           ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-21 11:03         ` [dpdk-dev] [PATCH v6 1/3] " kirankumark
2020-08-21 11:03           ` [dpdk-dev] [PATCH v6 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-08-29  0:48             ` Ajit Khaparde
2020-08-21 11:03           ` [dpdk-dev] [PATCH v6 3/3] net/octeontx2: add rss hash level support kirankumark
2020-08-29 14:52           ` [dpdk-dev] [PATCH v6 1/3] ethdev: add level support for RSS offload types Andrew Rybchenko
2020-09-01 13:23             ` Ferruh Yigit
2020-09-01  3:27           ` [dpdk-dev] [PATCH v7 " kirankumark
2020-09-01  3:27             ` [dpdk-dev] [PATCH v7 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-09-01  3:27             ` [dpdk-dev] [PATCH v7 3/3] net/octeontx2: add rss hash level support kirankumark
2020-09-01 13:37             ` [dpdk-dev] [PATCH v7 1/3] ethdev: add level support for RSS offload types Ferruh Yigit
2020-09-01 14:27               ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-09-01 14:44                 ` Ferruh Yigit [this message]
2020-09-01 14:54                 ` Ferruh Yigit
2020-09-01 17:11                 ` Ajit Khaparde
2020-09-03 10:11                   ` Kiran Kumar Kokkilagadda
2020-09-03 13:14                     ` Ferruh Yigit
2020-09-07  8:12                       ` Andrew Rybchenko
2020-09-08 19:40                         ` Ajit Khaparde
2020-09-17  2:07             ` [dpdk-dev] [PATCH v8 " kirankumark
2020-09-17  2:07               ` [dpdk-dev] [PATCH v8 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-09-17 18:58                 ` Ajit Khaparde
2020-09-17  2:07               ` [dpdk-dev] [PATCH v8 3/3] net/octeontx2: add rss hash level support kirankumark
2020-09-17  9:36               ` [dpdk-dev] [PATCH v8 1/3] ethdev: add level support for RSS offload types Andrew Rybchenko
2020-09-17 18:56                 ` Ajit Khaparde
2020-09-18 11:40                   ` Ferruh Yigit
2020-08-18 17:39     ` [dpdk-dev] [PATCH v3 1/2] " Ajit Khaparde
2020-08-19  3:58       ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda

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