netdev - Re: [net-next PATCH v3 04/12] net: flow_table: create a set of common headers and actions

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Date:	Tue, 20 Jan 2015 14:10:45 -0800
From:	John Fastabend <john.fastabend@...il.com>
To:	"John W. Linville" <linville@...driver.com>
CC:	tgraf@...g.ch, simon.horman@...ronome.com, sfeldma@...il.com,
	netdev@...r.kernel.org, jhs@...atatu.com, davem@...emloft.net,
	gerlitz.or@...il.com, andy@...yhouse.net, ast@...mgrid.com
Subject: Re: [net-next PATCH v3 04/12] net: flow_table: create a set of common
 headers and actions

On 01/20/2015 12:59 PM, John W. Linville wrote:
> On Tue, Jan 20, 2015 at 12:27:53PM -0800, John Fastabend wrote:
>> This adds common headers and actions that drivers can use.
>>
>> I have not yet moved the header graphs into the common header
>> because I'm not entirely convinced its re-usable. The devices
>> I have been looking at have different enough header graphs that
>> they wouldn't be re-usable. However possibly many 40Gbp NICs
>> for example could share a common header graph. When we get
>> multiple implementations we can move this into the common file
>> if it makes sense.
>>
>> And table structures seem to be unique enough that there is
>> little value in putting each devices table layout into the
>> common file so its left for device specific implementation.
>>
>> Signed-off-by: John Fastabend <john.r.fastabend@...el.com>
>> ---
>>   include/linux/if_flow_common.h |  257 ++++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 257 insertions(+)
>>   create mode 100644 include/linux/if_flow_common.h
>>
>> diff --git a/include/linux/if_flow_common.h b/include/linux/if_flow_common.h
>> new file mode 100644
>> index 0000000..ef2d66f
>> --- /dev/null
>> +++ b/include/linux/if_flow_common.h
>
> <snip>
>
>> +struct net_flow_action net_flow_pop_vlan = {
>> +	.name = "pop_vlan",
>> +	.uid = ACTION_POP_VLAN,
>> +	.args = net_flow_null_args,
>> +};
>
> Random thought, should there be a "push_vlan" (for double VLAN tagging)?
>
>

Yep I should add that one there are also some other actions
on my todo list but some of them require updates to the driver.

Assuming its not a big issue for anyone I would like like to
get this series in with the match/actions it has and then extend
the action and match lists.

.John

-- 
John Fastabend         Intel Corporation
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