linux-kernel - Re: [PATCH net-next] net: generalize calculation of skb extensions length

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Message-ID: <20230822184644.18966d0f@kernel.org>
Date:   Tue, 22 Aug 2023 18:46:44 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Thomas Weißschuh <linux@...ssschuh.net>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Robert Marko <robimarko@...il.com>
Subject: Re: [PATCH net-next] net: generalize calculation of skb extensions
 length

On Tue, 22 Aug 2023 08:51:57 +0200 Thomas Weißschuh wrote:
> Remove the necessity to modify skb_ext_total_length() when new extension
> types are added.
> Also reduces the line count a bit.
> 
> With optimizations enabled the function is folded down to a constant
> value as before.

Could you include more info about the compiler versions you tried
and maybe some objdump? We'll have to take your word for it getting
optimized out, would be great if we had more proof in the commit msg.
-- 
pw-bot: cr