linux-kernel - Re: [PATCH net-next v19 09/14] net: rename skb_copy_to_page

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Message-ID: <218513be-857b-4457-8bd8-c12e170233b7@gmail.com>
Date: Mon, 7 Oct 2024 22:29:13 +0800
From: Yunsheng Lin <yunshenglin0825@...il.com>
To: Alexander Duyck <alexander.duyck@...il.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 Yunsheng Lin <linyunsheng@...wei.com>, Eric Dumazet <edumazet@...gle.com>,
 David Ahern <dsahern@...nel.org>
Subject: Re: [PATCH net-next v19 09/14] net: rename skb_copy_to_page_nocache()
 helper

On 10/7/2024 12:18 AM, Alexander Duyck wrote:

...

> 
> I could probably live with sk_copy_to_skb_data_nocache since we also
> refer to the section after the page section with data_len. The basic
> idea is we are wanting to define what the function does with the
> function name rather than just report the arguments it is accepting.

Yes, looking more closely:
skb_add_data_nocache() does memcpy'ing to skb->data and update skb->len
only by calling skb_put(), and skb_copy_to_page_nocache() does
memcpy'ing to skb frag by updating both skb->len and skb->data_len
through the calling of skb_len_add().

Perhaps skb_add_frag_nocache() might seems a better name for now, and
the 'sk_' prefix might be done in the future if it does make sense.