From: Ferruh Yigit <ferruh.yigit@amd.com>
To: "Brandes, Shai" <shaibran@amazon.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [PATCH v3 07/33] net/ena: restructure the llq policy setting process
Date: Wed, 13 Mar 2024 11:21:39 +0000 [thread overview]
Message-ID: <64842348-8742-4da0-a99f-ff57f9bde6d0@amd.com> (raw)
In-Reply-To: <f7905ce67a634e3688a4baa7859df836@amazon.com>
On 3/10/2024 2:29 PM, Brandes, Shai wrote:
>
>
>> -----Original Message-----
>> From: Ferruh Yigit <ferruh.yigit@amd.com>
>> Sent: Friday, March 8, 2024 7:24 PM
>> To: Brandes, Shai <shaibran@amazon.com>
>> Cc: dev@dpdk.org
>> Subject: RE: [EXTERNAL] [PATCH v3 07/33] net/ena: restructure the llq policy
>> setting process
>>
>> CAUTION: This email originated from outside of the organization. Do not click
>> links or open attachments unless you can confirm the sender and know the
>> content is safe.
>>
>>
>>
>> On 3/6/2024 12:24 PM, shaibran@amazon.com wrote:
>>> From: Shai Brandes <shaibran@amazon.com>
>>>
>>> The driver will set the size of the LLQ header size according to the
>>> recommendation from the device.
>>> Replaced `enable_llq` and `large_llq_hdr` devargs with a new devarg
>>> `llq_policy` that accepts the following values:
>>> 0 - Disable LLQ.
>>> Use with extreme caution as it leads to a huge performance
>>> degradation on AWS instances from 6th generation onwards.
>>> 1 - Accept device recommended LLQ policy (Default).
>>> Device can recommend normal or large LLQ policy.
>>> 2 - Enforce normal LLQ policy.
>>> 3 - Enforce large LLQ policy.
>>> Required for packets with header that exceed 96 bytes on
>>> AWS instances prior to 5th generation.
>>>
>>
>> We had similar discussion before, although dev_args is not part of the ABI, it
>> is an user interface, and changes in the devargs will impact users directly.
>>
>> What would you think to either keep backward compatilibity in the devargs
>> (like not remove old one but add new one), or do this change in
>> 24.11 release?
> [Brandes, Shai] understood.
> The new devarg replaced the old ones and added option to enforce normal-llq mode which is critical for our release.
> As you suggested, we will keep backward compatibility and add an additional devarg for enforcing normal-llq policy.
> That way, we can easily replace it in future releases with a common devarg without the need to make major logic changes.
>
ack.
next prev parent reply other threads:[~2024-03-13 11:21 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-06 12:24 [PATCH v3 00/33] net/ena: v2.9.0 driver release shaibran
2024-03-06 12:24 ` [PATCH v3 01/33] net/ena: rework the metrics multi-process functions shaibran
2024-03-06 12:24 ` [PATCH v3 02/33] net/ena: report new supported link speed capabilities shaibran
2024-03-06 12:24 ` [PATCH v3 03/33] net/ena: update imissed stat with Rx overruns shaibran
2024-03-06 12:24 ` [PATCH v3 04/33] net/ena: sub-optimal configuration notifications support shaibran
2024-03-08 17:23 ` Ferruh Yigit
2024-03-10 14:43 ` Brandes, Shai
2024-03-13 11:18 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 05/33] net/ena: fix fast mbuf free shaibran
2024-03-08 17:23 ` Ferruh Yigit
2024-03-10 14:58 ` Brandes, Shai
2024-03-13 11:28 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 06/33] net/ena: rename base folder to hal shaibran
2024-03-08 17:23 ` Ferruh Yigit
2024-03-10 14:23 ` Brandes, Shai
2024-03-06 12:24 ` [PATCH v3 07/33] net/ena: restructure the llq policy setting process shaibran
2024-03-08 17:24 ` Ferruh Yigit
2024-03-10 14:29 ` Brandes, Shai
2024-03-13 11:21 ` Ferruh Yigit [this message]
2024-03-06 12:24 ` [PATCH v3 08/33] net/ena/hal: exponential backoff exp limit shaibran
2024-03-08 17:24 ` Ferruh Yigit
2024-03-10 14:53 ` Brandes, Shai
2024-03-12 16:53 ` Brandes, Shai
2024-03-13 11:25 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 09/33] net/ena/hal: add a new csum offload bit shaibran
2024-03-08 17:24 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 10/33] net/ena/hal: added a bus parameter to ena memcpy macro shaibran
2024-03-08 17:25 ` Ferruh Yigit
2024-03-10 15:08 ` Brandes, Shai
2024-03-13 11:27 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 11/33] net/ena/hal: optimize Rx ring submission queue shaibran
2024-03-06 12:24 ` [PATCH v3 12/33] net/ena/hal: rename fields in completion descriptors shaibran
2024-03-06 12:24 ` [PATCH v3 13/33] net/ena/hal: use correct read once on u8 field shaibran
2024-03-06 12:24 ` [PATCH v3 14/33] net/ena/hal: add completion descriptor corruption check shaibran
2024-03-06 12:24 ` [PATCH v3 15/33] net/ena/hal: malformed Tx descriptor error reason shaibran
2024-03-06 12:24 ` [PATCH v3 16/33] net/ena/hal: phc feature modifications shaibran
2024-03-06 12:24 ` [PATCH v3 17/33] net/ena/hal: restructure interrupt handling shaibran
2024-03-06 12:24 ` [PATCH v3 18/33] net/ena/hal: add unlikely to error checks shaibran
2024-03-06 12:24 ` [PATCH v3 19/33] net/ena/hal: missing admin interrupt reset reason shaibran
2024-03-06 12:24 ` [PATCH v3 20/33] net/ena/hal: check for existing keep alive notification shaibran
2024-03-06 12:24 ` [PATCH v3 21/33] net/ena/hal: modify memory barrier comment shaibran
2024-03-06 12:24 ` [PATCH v3 22/33] net/ena/hal: rework Rx ring submission queue shaibran
2024-03-06 12:24 ` [PATCH v3 23/33] net/ena/hal: remove operating system type enum shaibran
2024-03-06 12:24 ` [PATCH v3 24/33] net/ena/hal: handle command abort shaibran
2024-03-06 12:24 ` [PATCH v3 25/33] net/ena/hal: add support for device reset request shaibran
2024-03-06 12:24 ` [PATCH v3 26/33] net/ena: cosmetic changes shaibran
2024-03-08 11:17 ` Ferruh Yigit
2024-03-08 13:19 ` Brandes, Shai
2024-03-08 14:50 ` Ferruh Yigit
2024-03-06 12:24 ` [PATCH v3 27/33] net/ena/hal: modify customer metrics memory management shaibran
2024-03-06 12:24 ` [PATCH v3 28/33] net/ena/hal: cosmetic changes shaibran
2024-03-08 17:43 ` Ferruh Yigit
2024-03-08 17:44 ` Ferruh Yigit
2024-03-12 17:12 ` Brandes, Shai
2024-03-06 12:24 ` [PATCH v3 29/33] net/ena: update device-preferred size of rings shaibran
2024-03-06 12:24 ` [PATCH v3 30/33] net/ena: exhaust interrupt callbacks in device close shaibran
2024-03-06 12:24 ` [PATCH v3 31/33] net/ena: support max large llq depth from the device shaibran
2024-03-06 12:24 ` [PATCH v3 32/33] net/ena: control path pure polling mode shaibran
2024-03-06 12:24 ` [PATCH v3 33/33] net/ena: upgrade driver version to 2.9.0 shaibran
2024-03-08 17:36 ` [PATCH v3 00/33] net/ena: v2.9.0 driver release Ferruh Yigit
2024-03-08 20:26 ` Brandes, Shai
2024-03-10 14:21 ` Brandes, Shai
2024-03-13 11:28 ` Ferruh Yigit
2024-03-13 13:38 ` Brandes, Shai
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