netdev - Re: [PATCH v5 01/10 iwl-next] idpf: implement virtchnl transaction manager

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Message-ID: <9f4d0449-9995-4bb0-bd95-f12d9bc0b234@intel.com>
Date: Thu, 22 Feb 2024 14:04:16 +0100
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: Alan Brady <alan.brady@...el.com>
CC: <intel-wired-lan@...ts.osuosl.org>, <netdev@...r.kernel.org>, "Przemek
 Kitszel" <przemyslaw.kitszel@...el.com>, Igor Bagnucki
	<igor.bagnucki@...el.com>, Joshua Hay <joshua.a.hay@...el.com>
Subject: Re: [PATCH v5 01/10 iwl-next] idpf: implement virtchnl transaction
 manager

From: Alexander Lobakin <aleksander.lobakin@...el.com>
Date: Thu, 22 Feb 2024 13:53:25 +0100

> From: Alan Brady <alan.brady@...el.com>
> Date: Wed, 21 Feb 2024 12:16:37 -0800
> 
>> On 2/21/2024 4:15 AM, Alexander Lobakin wrote:
>>> From: Alan Brady <alan.brady@...el.com>
>>> Date: Tue, 20 Feb 2024 16:49:40 -0800
>>>
>>>> This starts refactoring how virtchnl messages are handled by adding a
>>>> transaction manager (idpf_vc_xn_manager).
> 
> [...]
> 
>>>
>>> Sorry for not noticing this before, but this struct can be local to
>>> idpf_virtchnl.c.
>>>
>>
>> Nice catch, I can definitely move this. I'm also considering though, all
>> of these structs I'm adding here are better suited in idpf_virtchnl.c
>> all together. I think the main thing preventing that is the
>> idpf_vc_xn_manager field in idpf_adapter. Would it be overkill to make
>> the field in idpf_adapter a pointer so I can forward declare and kalloc
>> it? I think I can then move everything to idpf_virtchnl.c. Or do you see
>> a better alternative? Or is it not worth the effort? Thanks!
> 
> Since it's not hotpath, you can make it a pointer and move everything to
> virtchnl.c, sounds nice.

Since you're sending v6 anyway, could you maybe move virtchnl function
declarations to new idpf_virtchnl.h to make idpf.h a bit less heavy?
Something like I did in this commit[0].

> 
>>
>>>> +
>>>> +/**
>>>> + * struct idpf_vc_xn_manager - Manager for tracking transactions
>>>> + * @ring: backing and lookup for transactions
>>>> + * @free_xn_bm: bitmap for free transactions
>>>> + * @xn_bm_lock: make bitmap access synchronous where necessary
>>>> + * @salt: used to make cookie unique every message
>>>> + */
>>>
>>> [...]

[0]
https://github.com/alobakin/linux/commit/0c8fae557f4e6ec1ae4353a68c9c5c9c2b70c5e9

Thanks,
Olek