netdev - Re: [net-next-2.6 PATCH v4 2/3] Support to encoding decoding skb mark on IFE action

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Message-ID: <CAM_iQpXgi4GPN-bR7_nJZV5gf8iZtzA-pLcieFAyicC=qfSFmw@mail.gmail.com>
Date:	Sat, 27 Feb 2016 20:25:52 -0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	David Miller <davem@...emloft.net>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [net-next-2.6 PATCH v4 2/3] Support to encoding decoding skb mark
 on IFE action

On Sat, Feb 27, 2016 at 5:08 AM, Jamal Hadi Salim <jhs@...atatu.com> wrote:
> From: Jamal Hadi Salim <jhs@...atatu.com>
>
> Example usage:
> Set the skb using skbedit then allow it to be encoded
>
> sudo tc qdisc add dev $ETH root handle 1: prio
> sudo tc filter add dev $ETH parent 1: protocol ip prio 10 \
> u32 match ip protocol 1 0xff flowid 1:2 \
> action skbedit mark 17 \
> action ife encode \
> allow mark \
> dst 02:15:15:15:15:15
>
> Note: You dont need the skbedit action if you are already encoding the
> skb mark earlier. A zero skb mark, when seen, will not be encoded.
>
> Alternative hard code static mark of 0x12 every time the filter matches
>
> sudo $TC filter add dev $ETH parent 1: protocol ip prio 10 \
> u32 match ip protocol 1 0xff flowid 1:2 \
> action ife encode \
> type 0xDEAD \
> use mark 0x12 \
> dst 02:15:15:15:15:15
>
> Signed-off-by: Jamal Hadi Salim <jhs@...atatu.com>

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