Re: [dpdk-dev] [PATCH] app/testpmd: support flow aging

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 4/26/2020 8:23 AM, Bill Zhou wrote:
> 
> 
>> -----Original Message-----
>> From: Ferruh Yigit <ferruh.yigit@intel.com>
>> Sent: Saturday, April 25, 2020 12:25 AM
>> To: Bill Zhou <dongz@mellanox.com>; wenzhuo.lu@intel.com;
>> jingjing.wu@intel.com; bernard.iremonger@intel.com; Ori Kam
>> <orika@mellanox.com>
>> Cc: dev@dpdk.org
>> Subject: Re: [dpdk-dev] [PATCH] app/testpmd: support flow aging
>>
>> On 4/24/2020 11:55 AM, Bill Zhou wrote:
>>> Currently, there is no way to check the aging event or to get the
>>> current aged flows in testpmd, this patch include those implements, it's
>> included:
>>> - Registering aging event based on verbose level, when set verbose > 0,
>>>   will register this event, otherwise, remove this event. In this event
>>>   only dump one line of log to user there is one aging event coming.
>>> - Add new command to list all aged flows, meanwhile, we can set
>> parameter
>>>   to destroy it.
>>
>> Can you please document new feature and command?
>>
>> Instead of overloading the 'verbose', what do you think having explicit
>> command to register aging events? ("flow aged register <port_id>"?) I think
>> many of the verbose usage won't really interest in the flow aging.
>>
> 
> Yes, some of the verbose usage indeed not interest in the flow aging. But If we use
> register or unregister event to one port, sometime, it will repeat many times for
> every ports.
> What do you think if we register this event all the time, and introduce new global
> var from command to control the event export to application ?
>    for example: set aged_flow_event_print_en [0 | 1]

I am not also sure about registering this event always, you can register for all
ports with same command, as we do in many commands:
"flow aged register <port_id>|all"

When argument is "all" it registers for all ports, when it is a specific
port_id, registers for that port id.
And it is good to have 'unregister' command too.

> 
>>>
>>> Signed-off-by: Bill Zhou <dongz@mellanox.com>
>>
>> <...>