netdev - RE: [EXT] Re: [PATCH v2 net 2/2] net: fec: restructuring the functions to avoid forward declarations

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Date: Wed, 3 May 2023 12:53:57 +0000
From: Shenwei Wang <shenwei.wang@....com>
To: Andrew Lunn <andrew@...n.ch>
CC: Wei Fang <wei.fang@....com>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Clark Wang <xiaoning.wang@....com>, dl-linux-imx
	<linux-imx@....com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
	<daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, John
 Fastabend <john.fastabend@...il.com>, Alexander Lobakin
	<alexandr.lobakin@...el.com>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>
Subject: RE: [EXT] Re: [PATCH v2 net 2/2] net: fec: restructuring the
 functions to avoid forward declarations



> -----Original Message-----
> From: Andrew Lunn <andrew@...n.ch>
> Sent: Tuesday, May 2, 2023 6:19 PM
> To: Shenwei Wang <shenwei.wang@....com>
> Cc: Wei Fang <wei.fang@....com>; David S. Miller <davem@...emloft.net>;
> Eric Dumazet <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>;
> Paolo Abeni <pabeni@...hat.com>; Clark Wang <xiaoning.wang@....com>; dl-
> linux-imx <linux-imx@....com>; Alexei Starovoitov <ast@...nel.org>; Daniel
> Borkmann <daniel@...earbox.net>; Jesper Dangaard Brouer
> <hawk@...nel.org>; John Fastabend <john.fastabend@...il.com>; Alexander
> Lobakin <alexandr.lobakin@...el.com>; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org; imx@...ts.linux.dev
> Subject: [EXT] Re: [PATCH v2 net 2/2] net: fec: restructuring the functions to
> avoid forward declarations
> 
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> 
> On Tue, May 02, 2023 at 05:08:18PM -0500, Shenwei Wang wrote:
> > The patch reorganizes functions related to XDP frame transmission,
> > moving them above the fec_enet_run_xdp implementation. This eliminates
> > the need for forward declarations of these functions.
> 
> I'm confused. Are these two patches in the wrong order?
> 
> The reason that i asked you to fix the forward declaration in net-next is that it
> makes your fix two patches. Sometimes that is not obvious to people back
> porting patches, and one gets lost, causing build problems. So it is better to have
> a single patch which is maybe not 100% best practice merged to stable, and then
> a cleanup patch merged to the head of development.
> 

If that is the case, we should forgo the second patch. Its purpose was to reorganize 
function order such that the subsequent patch to net-next enabling XDP_TX would not 
encounter forward declaration issues.

Thanks,
Shenwei

>    Andrew