linux-kernel - Re: [PATCH for-next] RDMA/hns: Support DSCP

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Date: Tue, 2 Apr 2024 10:55:41 +0800
From: Junxian Huang <huangjunxian6@...ilicon.com>
To: Leon Romanovsky <leon@...nel.org>
CC: <jgg@...pe.ca>, <linux-rdma@...r.kernel.org>, <linuxarm@...wei.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH for-next] RDMA/hns: Support DSCP



On 2024/4/2 2:12, Leon Romanovsky wrote:
> On Mon, Apr 01, 2024 at 09:25:39PM +0800, Junxian Huang wrote:
>>
>>
>> On 2024/4/1 19:48, Leon Romanovsky wrote:
>>> On Fri, Mar 15, 2024 at 05:35:51PM +0800, Junxian Huang wrote:
>>>> Add support for DSCP configuration. For DSCP, get dscp-prio mapping
>>>> via hns3 nic driver api .get_dscp_prio() and fill the SL (in WQE for
>>>> UD or in QPC for RC) with the priority value. The prio-tc mapping is
>>>> configured to HW by hns3 nic driver. HW will select a corresponding
>>>> TC according to SL and the prio-tc mapping.
>>>>
>>>> Signed-off-by: Junxian Huang <huangjunxian6@...ilicon.com>
>>>> ---
>>>>  drivers/infiniband/hw/hns/hns_roce_ah.c     | 32 +++++---
>>>>  drivers/infiniband/hw/hns/hns_roce_device.h |  6 ++
>>>>  drivers/infiniband/hw/hns/hns_roce_hw_v2.c  | 86 ++++++++++++++++-----
>>>>  drivers/infiniband/hw/hns/hns_roce_qp.c     | 13 ++++
>>>>  include/uapi/rdma/hns-abi.h                 |  9 ++-
>>>>  5 files changed, 117 insertions(+), 29 deletions(-)
>>>
>>> 1. What is TC mode?
>>
>> TC mode indicates whether the HW is configured as DSCP mode or VLAN priority
>> mode currently.
>>
>>> 2. Did you post rdma-core PR?
>>
>> Not yet. I was meant to wait until this patch is applied. Should I post it
>> right now?
> 
> Yes, for any UAPI changes, we require to have rdma-core PR.
> 
> Thanks
> 

PR has been posted.

Thanks,
Junxian

>>
>> Junxian
>>
>>>
>>> Thanks