[dpdk-dev] [PATCH 1/4] net/i40e: support replace filter type

[Ferruh Yigit]

On 3/9/2017 5:59 AM, Xing, Beilei wrote:
> 
> 
>> -----Original Message-----
>> From: Yigit, Ferruh
>> Sent: Wednesday, March 8, 2017 11:50 PM
>> To: Xing, Beilei <beilei.xing at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>
>> Cc: Zhang, Helin <helin.zhang at intel.com>; dev at dpdk.org; Iremonger,
>> Bernard <bernard.iremonger at intel.com>; Stroe, Laura
>> <laura.stroe at intel.com>
>> Subject: Re: [dpdk-dev] [PATCH 1/4] net/i40e: support replace filter type
>>
>> On 3/3/2017 9:31 AM, Beilei Xing wrote:
>>> Add new admin queue function and extended fields in DCR 288:
>>>  - Add admin queue function for Replace filter
>>>    command (Opcode: 0x025F)
>>>  - Add General fields for Add/Remove Cloud filters
>>>    command
>>>
>>> This patch will be removed to base driver in future.
>>>
>>> Signed-off-by: Bernard Iremonger <bernard.iremonger at intel.com>
>>> Signed-off-by: Stroe Laura <laura.stroe at intel.com>
>>> Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
>>> Signed-off-by: Beilei Xing <beilei.xing at intel.com>
>>> ---
>>>  drivers/net/i40e/i40e_ethdev.h | 106 ++++++++++++++++++++++++++++
>>>  drivers/net/i40e/i40e_flow.c   | 152
>> +++++++++++++++++++++++++++++++++++++++++
>>>  2 files changed, 258 insertions(+)
>>>
>>> diff --git a/drivers/net/i40e/i40e_ethdev.h
>>> b/drivers/net/i40e/i40e_ethdev.h index f545850..3a49865 100644
>>> --- a/drivers/net/i40e/i40e_ethdev.h
>>> +++ b/drivers/net/i40e/i40e_ethdev.h
>>> @@ -729,6 +729,100 @@ struct i40e_valid_pattern {
>>>  	parse_filter_t parse_filter;
>>>  };
>>>
>>> +/* Support replace filter */
>>> +
>>> +/* i40e_aqc_add_remove_cloud_filters_element_big_data is used when
>>> + * I40E_AQC_ADD_REM_CLOUD_CMD_BIG_BUFFER flag is set. refer to
>>> + * DCR288
>>
>> Please do not refer to DCR, unless you can provide a public link for it.
> OK, got it.
> 
>>
>>> + */
>>> +struct i40e_aqc_add_remove_cloud_filters_element_big_data {
>>> +	struct i40e_aqc_add_remove_cloud_filters_element_data element;
>>
>> What is the difference between
>> "i40e_aqc_add_remove_cloud_filters_element_big_data" and
>> "i40e_aqc_add_remove_cloud_filters_element_data", why need big_data
>> one?
> 
> As ' Add/Remove Cloud filters -command buffer ' is changed in the DCR288, 'general fields' exists only when big_buffer is set.

What does it mean having "big_buffer" set? What changes functionally
being big_buffer set or not?

> But we don't want to change the  " i40e_aqc_add_remove_cloud_filters_element_data " as it will cause ABI/API change in kernel driver.
> 
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