netdev - Re: [PATCH rdma-next 10/10] RDMA/nldev: Add support to get current enabled optional counters

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Message-ID: <29c4973e-2e9b-9ea1-e8f4-c10e73671f21@nvidia.com>
Date:   Tue, 24 Aug 2021 10:13:34 +0800
From:   Mark Zhang <markzhang@...dia.com>
To:     Jason Gunthorpe <jgg@...dia.com>
CC:     <dledford@...hat.com>, <saeedm@...dia.com>,
        <linux-rdma@...r.kernel.org>, <netdev@...r.kernel.org>,
        <aharonl@...dia.com>, <netao@...dia.com>, <leonro@...dia.com>
Subject: Re: [PATCH rdma-next 10/10] RDMA/nldev: Add support to get current
 enabled optional counters

On 8/24/2021 3:44 AM, Jason Gunthorpe wrote:
> On Wed, Aug 18, 2021 at 02:24:28PM +0300, Mark Zhang wrote:
> 
>> diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
>> index 79e6ca87d2e0..57f39d8fe434 100644
>> +++ b/include/uapi/rdma/rdma_netlink.h
>> @@ -557,6 +557,8 @@ enum rdma_nldev_attr {
>>   	RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENTRY,	/* nested table */
>>   	RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENTRY_NAME,	/* string */
>>   	RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENTRY_VALUE,	/* u64 */
>> +	RDMA_NLDEV_ATTR_STAT_OP_MODE_LIST,		/* u8 */
>> +	RDMA_NLDEV_ATTR_STAT_OP_MODE_LIST_SUPPORTED,	/* u8 */
> 
> See, here - shouldn't manipulation of MODE_LIST be done by a normal
> RDMA_NLDEV_CMD_STAT_SET with the new MODE_LIST array? This doesn't seem
> netlinky at all..

Both of them are flags and this is a "get" operation; "MODE_LIST" asks 
kernel to return currently enabled op-counters, "MODE_LIST_SUPPORTED" 
asks kernel to return supported op-counters. Maybe the macro name are 
not good?