netdev - Re: [PATCH iproute2-next v4 1/1] police: Add support for json output

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Date:   Thu, 8 Jul 2021 10:23:52 +0300
From:   Roi Dayan <roid@...dia.com>
To:     Hangbin Liu <liuhangbin@...il.com>,
        Davide Caratti <dcaratti@...hat.com>
CC:     <netdev@...r.kernel.org>, Paul Blakey <paulb@...dia.com>,
        David Ahern <dsahern@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        "Jamal Hadi Salim" <jhs@...atatu.com>,
        Roman Mashak <mrv@...atatu.com>,
        Baowen Zheng <baowen.zheng@...igine.com>
Subject: Re: [PATCH iproute2-next v4 1/1] police: Add support for json output



On 2021-07-08 9:57 AM, Roi Dayan wrote:
> 
> 
> On 2021-07-07 9:53 AM, Hangbin Liu wrote:
>> On Tue, Jul 06, 2021 at 10:27:34AM +0200, Davide Caratti wrote:
>>> my 2 cents:
>>>
>>> what about using PRINT_FP / PRINT_JSON, so we fix the JSON output 
>>> only to show "index", and
>>> preserve the human-readable printout iproute and kselftests? besides 
>>> avoiding failures because
>>> of mismatching kselftests / iproute, this would preserve 
>>> functionality of scripts that
>>> configure / dump the "police" action. WDYT?
>>
>> +1
>>
> 
> 
> why not fix the kselftest to look for the correct output?
> 
> all actions output unsigned as the index.
> though I did find an issue with the fp output that you pasted
> that I missed.
> 
> 
>          action order 0: police   index 1 rate 1Kbit burst 10Kb mtu 2Kb 
> action reclassify overhead 0 ref 1 bind 0
> 
> 
> You asked about the \t before index and actually there is a missing
> print_nl() call before printing index and the rest as in the other
> actions.
> 
> then the match should be something like this
> 
>      "matchPattern": "action order [0-9]*: police.*index 0x1 rate 1Kbit 
> burst 10Kb"

actually its

    "matchPattern": "action order [0-9]*: police.*index 1 rate 1Kbit 
burst 10Kb"

also i found some selftest fail for "overhead" matching as i used
print_uint() instead of print_size().

let me send a fix for this with fix for the kselftest of police.json
i think its better to have the consistent output of all actions
instead of police using hex for the instance number.