netdev - Re: [PATCH v5 bpf 03/11] xsk: fix usage of multi-buffer BPF helpers for ZC XDP

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Message-ID: <ZbFBSJY6nEpw+5VA@boxer>
Date: Wed, 24 Jan 2024 17:56:40 +0100
From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: <bpf@...r.kernel.org>, <ast@...nel.org>, <daniel@...earbox.net>,
	<andrii@...nel.org>, <netdev@...r.kernel.org>, <magnus.karlsson@...el.com>,
	<bjorn@...nel.org>, <echaudro@...hat.com>, <lorenzo@...nel.org>,
	<martin.lau@...ux.dev>, <tirthendu.sarkar@...el.com>,
	<john.fastabend@...il.com>, <horms@...nel.org>
Subject: Re: [PATCH v5 bpf 03/11] xsk: fix usage of multi-buffer BPF helpers
 for ZC XDP

On Wed, Jan 24, 2024 at 08:53:49AM -0800, Jakub Kicinski wrote:
> On Wed, 24 Jan 2024 13:02:21 +0100 Maciej Fijalkowski wrote:
> > > nit: this has just one caller, why not inline these 3 lines?  
> > 
> > we usually rely on compiler to do that, we have the rule "no inlines in
> > source files", no?
> 
> I mean Ctrl-x Ctrl-v the code, the function has 3 LoC and one caller.
> And a semi-meaningless name. I'm not sure why this code was factored
> out.

Ummm. Probably some previous version was heavier, now I see the point :)
Will fix.

> 
> > > nit: prefix the function name, please  
> > 
> > will rename to bpf_xdp_shrink_data(). Thanks for taking a look!
> 
> 👍️