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Date: Mon, 8 Apr 2024 11:11:12 +0200
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Alexander Duyck
	<alexanderduyck@...com>, Yunsheng Lin <linyunsheng@...wei.com>, "Jesper
 Dangaard Brouer" <hawk@...nel.org>, Ilias Apalodimas
	<ilias.apalodimas@...aro.org>, Christoph Lameter <cl@...ux.com>, "Vlastimil
 Babka" <vbabka@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	<nex.sw.ncis.osdt.itp.upstreaming@...el.com>, <netdev@...r.kernel.org>,
	<intel-wired-lan@...ts.osuosl.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v9 7/9] libeth: add Rx buffer management

From: Jakub Kicinski <kuba@...nel.org>
Date: Fri, 5 Apr 2024 21:25:13 -0700

> On Thu,  4 Apr 2024 17:44:00 +0200 Alexander Lobakin wrote:
>> +/**
>> + * struct libeth_fq - structure representing a buffer queue
>> + * @fp: hotpath part of the structure
> 
> Second time this happens this week, so maybe some tooling change in 6.9
> but apparently kdoc does not want to know about the tagged struct:
> 
> include/net/libeth/rx.h:69: warning: Excess struct member 'fp' description in 'libeth_fq'

Oh no, maybe we should teach kdoc to parse struct_group*()?

> 
>> + * @pp: &page_pool for buffer management
>> + * @fqes: array of Rx buffers
>> + * @truesize: size to allocate per buffer, w/overhead
>> + * @count: number of descriptors/buffers the queue has
>> + * @buf_len: HW-writeable length per each buffer
>> + * @nid: ID of the closest NUMA node with memory
>> + */
>> +struct libeth_fq {
>> +	struct_group_tagged(libeth_fq_fp, fp,
>> +		struct page_pool	*pp;
>> +		struct libeth_fqe	*fqes;
>> +
>> +		u32			truesize;
>> +		u32			count;
>> +	);
>> +
>> +	/* Cold fields */
>> +	u32			buf_len;
>> +	int			nid;
>> +};

Thanks,
Olek

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