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Date: Fri, 10 Nov 2023 15:19:07 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arch@...r.kernel.org, linux-kselftest@...r.kernel.org,
linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linaro-mm-sig@...ts.linaro.org, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Jesper
Dangaard Brouer <hawk@...nel.org>, Ilias Apalodimas
<ilias.apalodimas@...aro.org>, Arnd Bergmann <arnd@...db.de>, David Ahern
<dsahern@...nel.org>, Willem de Bruijn <willemdebruijn.kernel@...il.com>,
Shuah Khan <shuah@...nel.org>, Sumit Semwal <sumit.semwal@...aro.org>,
"Christian König" <christian.koenig@....com>, Shakeel Butt
<shakeelb@...gle.com>, Jeroen de Borst <jeroendb@...gle.com>, Praveen
Kaligineedi <pkaligineedi@...gle.com>
Subject: Re: [RFC PATCH v3 02/12] net: page_pool: create hooks for custom
page providers
On Sun, 5 Nov 2023 18:44:01 -0800 Mina Almasry wrote:
> diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
> index 6fc5134095ed..d4bea053bb7e 100644
> --- a/include/net/page_pool/types.h
> +++ b/include/net/page_pool/types.h
> @@ -60,6 +60,8 @@ struct page_pool_params {
> int nid;
> struct device *dev;
> struct napi_struct *napi;
> + u8 memory_provider;
> + void *mp_priv;
> enum dma_data_direction dma_dir;
> unsigned int max_len;
> unsigned int offset;
you should rebase on top of net-next
More importantly I was expecting those fields to be gone from params.
The fact that the page pool is configured to a specific provider
should be fully transparent to the driver, driver should just tell
the core what queue its creating the pool from and if there's a dmabuf
bound for that queue - out pops a pp backed by the dmabuf.
My RFC had the page pool params fields here as a hack.
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