netdev - Re: [patch iproute2/net-next 2/2] devlink: introduce support for showing port number and split subport number

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Date:   Thu, 24 May 2018 08:39:52 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     David Ahern <dsahern@...il.com>
Cc:     netdev@...r.kernel.org, idosch@...lanox.com,
        jakub.kicinski@...ronome.com, mlxsw@...lanox.com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
        michael.chan@...adcom.com, ganeshgr@...lsio.com,
        saeedm@...lanox.com, simon.horman@...ronome.com,
        pieter.jansenvanvuuren@...ronome.com, john.hurley@...ronome.com,
        dirk.vandermerwe@...ronome.com, alexander.h.duyck@...el.com,
        ogerlitz@...lanox.com, vijaya.guvva@...ium.com,
        satananda.burla@...ium.com, raghu.vatsavayi@...ium.com,
        felix.manlunas@...ium.com, gospo@...adcom.com,
        sathya.perla@...adcom.com, vasundhara-v.volam@...adcom.com,
        tariqt@...lanox.com, eranbe@...lanox.com,
        jeffrey.t.kirsher@...el.com, roopa@...ulusnetworks.com
Subject: Re: [patch iproute2/net-next 2/2] devlink: introduce support for
 showing port number and split subport number

Wed, May 23, 2018 at 10:05:49PM CEST, dsahern@...il.com wrote:
>On 5/20/18 2:15 AM, Jiri Pirko wrote:
>> From: Jiri Pirko <jiri@...lanox.com>
>> 
>> Signed-off-by: Jiri Pirko <jiri@...lanox.com>
>> ---
>>  devlink/devlink.c            | 6 ++++++
>>  include/uapi/linux/devlink.h | 2 ++
>>  2 files changed, 8 insertions(+)
>> 
>> diff --git a/devlink/devlink.c b/devlink/devlink.c
>> index df2c66dac1c7..b0ae17767dab 100644
>> --- a/devlink/devlink.c
>> +++ b/devlink/devlink.c
>> @@ -1737,9 +1737,15 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
>>  
>>  		pr_out_str(dl, "flavour", port_flavour_name(port_flavour));
>>  	}
>> +	if (tb[DEVLINK_ATTR_PORT_NUMBER])
>> +		pr_out_uint(dl, "number",
>> +			    mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_NUMBER]));
>
>"number" is a label means nothing. "port" is more descriptive.

That attribute name is "port_number". As the other attributes are
named "port_something", and the "something" is printed out here, the
"number" is consistent with it. Each line represents a port with a list
of attributes.

>
># ./devlink port
>pci/0000:03:00.0/1: type eth netdev swp17 flavour physical number 17
>pci/0000:03:00.0/3: type eth netdev swp18 flavour physical number 18
>pci/0000:03:00.0/5: type eth netdev swp19 flavour physical number 19
>pci/0000:03:00.0/7: type eth netdev swp20 flavour physical number 20
>pci/0000:03:00.0/9: type eth netdev swp21 flavour physical number 21
>...
>pci/0000:03:00.0/61: type eth netdev swp1s0 flavour physical number 1
>split_group 1 subport 0
>pci/0000:03:00.0/62: type eth netdev swp1s1 flavour physical number 1
>split_group 1 subport 1
>