netdev - Re: [PATCH v3 net-next 2/2] net sched ife action: Introduce skb tcindex metadata encap decap

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20160919.215715.42528336162002380.davem@davemloft.net>
Date:   Mon, 19 Sep 2016 21:57:15 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     jhs@...atatu.com
Cc:     netdev@...r.kernel.org, xiyou.wangcong@...il.com
Subject: Re: [PATCH v3 net-next 2/2] net sched ife action: Introduce skb
 tcindex metadata encap decap

From: Jamal Hadi Salim <jhs@...atatu.com>
Date: Sun, 18 Sep 2016 07:31:43 -0400

> From: Jamal Hadi Salim <jhs@...atatu.com>
> 
> Sample use case of how this is encoded:
> user space via tuntap (or a connected VM/Machine/container)
> encodes the tcindex TLV.
> 
> Sample use case of decoding:
> IFE action decodes it and the skb->tc_index is then used to classify.
> So something like this for encoded ICMP packets:
> 
> .. first decode then reclassify... skb->tcindex will be set
> sudo $TC filter add dev $ETH parent ffff: prio 2 protocol 0xbeef \
> u32 match u32 0 0 flowid 1:1 \
> action ife decode reclassify
> 
> ...next match the decode icmp packet...
> sudo $TC filter add dev $ETH parent ffff: prio 4 protocol ip \
> u32 match ip protocol 1 0xff flowid 1:1 \
> action continue
> 
> ... last classify it using the tcindex classifier and do someaction..
> sudo $TC filter add dev $ETH parent ffff: prio 5 protocol ip \
> handle 0x11 tcindex classid 1:1 \
> action blah..
> 
> Signed-off-by: Jamal Hadi Salim <jhs@...atatu.com>

Applied.