linux-kernel - Re: [PATCH net-next v9 7/9] libeth: add Rx buffer management

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Date: Fri, 5 Apr 2024 21:25:13 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
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

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'

> + * @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;
> +};