netdev - Re: [PATCH] netdev: pktgen xmit packet through vlan interface

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Date:	Tue, 6 May 2014 09:51:50 +0800
From:	Zhouyi Zhou <zhouzhouyi@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	Jesper Dangaard Brouer <brouer@...hat.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	David Miller <davem@...emloft.net>,
	steffen.klassert@...unet.com, fan.du@...driver.com,
	dborkman@...hat.com, Mathias Krause <minipli@...glemail.com>,
	tgraf@...g.ch, "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Zhouyi Zhou <yizhouzhou@....ac.cn>
Subject: Re: [PATCH] netdev: pktgen xmit packet through vlan interface

> You could just force pktgen to not support multi-skb on vlan interfaces?
>
> I thought we went through this a year or two ago and came up with
> something like a 'pktgen-challenged' network interface flag?

Ah yes,  IFF_TX_SKB_SHARING does the job, very sorry for missing that,
 as matter of fact, I have
tailed pktgen model for my personal use.

By the way, would skb_clone save the CPU cycles for
memset(skb_put(skb, datalen), 0, datalen) thing ? especially for
Jesper's qdisc test scenery.





>
> Thanks,
> Ben
>
>
> --
> Ben Greear <greearb@...delatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>
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