linux-kernel - Re: [PATCHv4 net-next 2/3] octeontx2-af: Add devlink health reporters for NPA

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Date:   Mon, 23 Nov 2020 11:22:03 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     George Cherian <gcherian@...vell.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geethasowjanya Akula <gakula@...vell.com>,
        "masahiroy@...nel.org" <masahiroy@...nel.org>,
        "willemdebruijn.kernel@...il.com" <willemdebruijn.kernel@...il.com>,
        "saeed@...nel.org" <saeed@...nel.org>
Subject: Re: [PATCHv4 net-next 2/3] octeontx2-af: Add devlink health
 reporters for NPA

Mon, Nov 23, 2020 at 03:49:06AM CET, gcherian@...vell.com wrote:
>
>
>> -----Original Message-----
>> From: Jiri Pirko <jiri@...nulli.us>
>> Sent: Saturday, November 21, 2020 7:44 PM
>> To: George Cherian <gcherian@...vell.com>
>> Cc: netdev@...r.kernel.org; linux-kernel@...r.kernel.org;
>> kuba@...nel.org; davem@...emloft.net; Sunil Kovvuri Goutham
>> <sgoutham@...vell.com>; Linu Cherian <lcherian@...vell.com>;
>> Geethasowjanya Akula <gakula@...vell.com>; masahiroy@...nel.org;
>> willemdebruijn.kernel@...il.com; saeed@...nel.org
>> Subject: Re: [PATCHv4 net-next 2/3] octeontx2-af: Add devlink health
>> reporters for NPA
>> 
>> Sat, Nov 21, 2020 at 05:02:00AM CET, george.cherian@...vell.com wrote:
>> >Add health reporters for RVU NPA block.
>> >NPA Health reporters handle following HW event groups
>> > - GENERAL events
>> > - ERROR events
>> > - RAS events
>> > - RVU event
>> >An event counter per event is maintained in SW.
>> >
>> >Output:
>> > # devlink health
>> > pci/0002:01:00.0:
>> >   reporter npa
>> >     state healthy error 0 recover 0
>> > # devlink  health dump show pci/0002:01:00.0 reporter npa
>> > NPA_AF_GENERAL:
>> >        Unmap PF Error: 0
>> >        Free Disabled for NIX0 RX: 0
>> >        Free Disabled for NIX0 TX: 0
>> >        Free Disabled for NIX1 RX: 0
>> >        Free Disabled for NIX1 TX: 0
>> 
>> This is for 2 ports if I'm not mistaken. Then you need to have this reporter
>> per-port. Register ports and have reporter for each.
>> 
>No, these are not port specific reports.
>NIX is the Network Interface Controller co-processor block.
>There are (max of) 2 such co-processor blocks per SoC.

Ah. I see. In that case, could you please structure the json
differently. Don't concatenate the number with the string. Instead of
that, please have 2 subtrees, one for each NIX.


>
>Moreover, this is an NPA (Network Pool/Buffer Allocator co- processor) reporter.
>This tells whether a free or alloc operation is skipped due to the configurations set by
>other co-processor blocks (NIX,SSO,TIM etc).
>
>https://www.kernel.org/doc/html/latest/networking/device_drivers/ethernet/marvell/octeontx2.html
>> NAK.