linux-kernel - Re: [PATCH net-next] net/sched: Add precise drop reason for pfifo

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Message-ID: <aIO+CKQ/kvpX5lMo@pop-os.localdomain>
Date: Fri, 25 Jul 2025 10:25:28 -0700
From: Cong Wang <xiyou.wangcong@...il.com>
To: fan.yu9@....com.cn
Cc: dumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	horms@...nel.org, davem@...emloft.net, jiri@...nulli.us,
	jhs@...atatu.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, xu.xin16@....com.cn,
	yang.yang29@....com.cn, tu.qiang35@....com.cn,
	jiang.kun2@....com.cn, wang.yaxin@....com.cn, qiu.yutan@....com.cn,
	he.peilin@....com.cn
Subject: Re: [PATCH net-next] net/sched: Add precise drop reason for
 pfifo_fast queue overflows

On Thu, Jul 24, 2025 at 09:28:37PM +0800, fan.yu9@....com.cn wrote:
> From: Fan Yu <fan.yu9@....com.cn>
> 
> Currently, packets dropped by pfifo_fast due to queue overflow are
> marked with a generic SKB_DROP_REASON_QDISC_DROP in __dev_xmit_skb().
> 
> This patch adds explicit drop reason SKB_DROP_REASON_QDISC_OVERLIMIT
> for queue-full cases, providing better distinction from other qdisc drops.
> 
> Signed-off-by: Fan Yu <fan.yu9@....com.cn>

Reviewed-by: Cong Wang <xiyou.wangcong@...il.com>

BTW, it seems net-next is closed, you may need to resend it after it is
re-open.

Thanks.