netdev - Re: [PATCH net-next 0/4] ERSPAN version 2 (type III) support

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Message-ID: <CALDO+SaZiS1JrmO4sg6WqHaJOZHqFGSLeYtb9v2hkLrWEsF1Lg@mail.gmail.com>
Date:   Wed, 13 Dec 2017 18:08:57 -0800
From:   William Tu <u9012063@...il.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 0/4] ERSPAN version 2 (type III) support

On Wed, Dec 13, 2017 at 5:54 PM, Stephen Hemminger
<stephen@...workplumber.org> wrote:
> On Wed, 13 Dec 2017 16:38:54 -0800
> William Tu <u9012063@...il.com> wrote:
>
>> ERSPAN has two versions, v1 (type II) and v2 (type III).  This patch
>> series add support for erspan v2 based on existing erspan v1
>> implementation.  The first patch refactors the existing erspan v1's
>> header structure, making it extensible to put additional v2's header.
>> The second and third patch introduces erspan v2's implementation to
>> ipv4 and ipv6 erspan, for both native mode and collect metadata mode.
>> Finally, test cases are added under the samples/bpf.
>>
>> Note:
>> ERSPAN version 2 has many features and this patch does not implement
>> all.  One major use case of version 2 over version 1 is its timestamp
>> and direction.  So the traffic collector is able to distinguish the
>> mirrorred traffic better.  Other features such as SGT (security group
>> tag), FT (frame type) for carrying non-ethernet packet, and optional
>> subheader are not implemented yet.
>>
>> Example commandline for ERSPAN version 2:
>> ip link add dev ip6erspan11 type ip6erspan seq key 102 \
>>       local fc00:100::2 remote fc00:100::1 \
>>       erspan_ver 2 erspan_dir 1 erspan_hwid 17
>>
>> The corresponding iproute2 patch:
>> https://marc.info/?l=linux-netdev&m=151321141525106&w=2
>
>
> If this is accepted to net-next you will need to
> resubmit the iproute2 patch.

Hi Stephen,
Yes, I noticed that I forgot to update the iproute2 man page. Thanks
William