netdev - Re: [PATCH net-next] net: gro: change GRO overflow strategy

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Message-ID: <CAHA+R7M1wYwLA32fw=jzOUTR1+_zy8K9ugJohLmv1Tr1UHdhTw@mail.gmail.com>
Date:	Thu, 9 Jan 2014 16:44:41 -0800
From:	Cong Wang <cwang@...pensource.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Neal Cardwell <ncardwell@...gle.com>,
	Jerry Chu <hkchu@...gle.com>
Subject: Re: [PATCH net-next] net: gro: change GRO overflow strategy

On Thu, Jan 9, 2014 at 2:12 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> +               /* locate the end of the list to select the 'oldest' flow */
> +               while (nskb->next) {
> +                       pp = &nskb->next;
> +                       nskb = *pp;
> +               }
> +               *pp = NULL;
> +               nskb->next = NULL;

How long could this list be?

I think it's time to use doubly linked list for gro,
although definitely not in this patch.
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