linux-kernel - Re: [PATCH] bcm63xx_enet: reuse skbuff

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Message-ID: <20220614215006.67893ec1@kernel.org>
Date:   Tue, 14 Jun 2022 21:50:06 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Sieng Piaw Liew <liew.s.piaw@...il.com>
Cc:     davem@...emloft.com, edumazet@...gle.com, f.fainelli@...il.com,
        bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bcm63xx_enet: reuse skbuff_head

On Tue, 14 Jun 2022 10:10:09 +0800 Sieng Piaw Liew wrote:
> Subject: [PATCH] bcm63xx_enet: reuse skbuff_head

Please improve the subject. One verb and one vaguely correct noun 
is not good enough.

> napi_build_skb() reuses NAPI skbuff_head cache in order to save some
> cycles on freeing/allocating skbuff_heads on every new Rx or completed
> Tx.
> Use napi_consume_skb() to feed the cache with skbuff_heads of completed
> Tx so it's never empty.
> 
> Signed-off-by: Sieng Piaw Liew <liew.s.piaw@...il.com>

Please keep Florian's Ack when posting v2.