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Date:   Sun, 28 Jun 2020 13:16:11 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Po Liu <po.liu@....com>
Cc:     dsahern@...il.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, davem@...emloft.net, jhs@...atatu.com,
        vlad@...lov.dev, claudiu.manoil@....com, vladimir.oltean@....com,
        alexandru.marginean@....com
Subject: Re: [iproute2-next] action police: make 'mtu' could be set
 independently in police action

On Sun, 28 Jun 2020 09:46:02 +0800
Po Liu <po.liu@....com> wrote:

> Current police action must set 'rate' and 'burst'. 'mtu' parameter
> set the max frame size and could be set alone without 'rate' and 'burst'
> in some situation. Offloading to hardware for example, 'mtu' could limit
> the flow max frame size.
> 
> Signed-off-by: Po Liu <po.liu@....com>
> ---
>  tc/m_police.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tc/m_police.c b/tc/m_police.c
> index a5bc20c0..89497f67 100644
> --- a/tc/m_police.c
> +++ b/tc/m_police.c
> @@ -161,8 +161,8 @@ action_ctrl_ok:
>  		return -1;
>  
>  	/* Must at least do late binding, use TB or ewma policing */
> -	if (!rate64 && !avrate && !p.index) {
> -		fprintf(stderr, "\"rate\" or \"avrate\" MUST be specified.\n");
> +	if (!rate64 && !avrate && !p.index && !mtu) {
> +		fprintf(stderr, "\"rate\" or \"avrate\" or \"mtu\"MUST be specified.\n");

Missing blank.
Your message will come out as:
"rate" or "avrate" or "mtu"MUST be specified.


The quotes aren't adding to the readability, why not just remove them instead.

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