Re: [PATCH for-next v10 00/11] Elastic RDMA Adapter (ERDMA) driver

[Cheng Xu <chengyou@linux.alibaba.com>]

On 6/8/22 7:54 PM, Jason Gunthorpe wrote:
> On Wed, Jun 08, 2022 at 06:43:09PM +0800, Cheng Xu wrote:
>> Hello all,
>>
>> This v10 patch set introduces the Elastic RDMA Adapter (ERDMA) driver,
>> which released in Apsara Conference 2021 by Alibaba. The PR of ERDMA
>> userspace provider has already been created [1].
>>
>> ERDMA enables large-scale RDMA acceleration capability in Alibaba ECS
>> environment, initially offered in g7re instance. It can improve the
>> efficiency of large-scale distributed computing and communication
>> significantly and expand dynamically with the cluster scale of Alibaba
>> Cloud.
>>
>> ERDMA is a RDMA networking adapter based on the Alibaba MOC hardware. It
>> works in the VPC network environment (overlay network), and uses iWarp
>> transport protocol. ERDMA supports reliable connection (RC). ERDMA also
>> supports both kernel space and user space verbs. Now we have already
>> supported HPC/AI applications with libfabric, NoF and some other internal
>> verbs libraries, such as xrdma, epsl, etc,.
>>
>> For the ECS instance with RDMA enabled, our MOC hardware generates two
>> kinds of PCI devices: one for ERDMA, and one for the original net device
>> (virtio-net). They are separated PCI devices.
>>
>> Fixed issues in v10:
>> - Remove unneeded semicolon in erdma_qp.c reported by Abcci Robot.
>> - Remove duplicated include in erdma_cm.c reported by Abcci Robot.
>> - Fix return value check in erdma_alloc_ucontext() reported by Hulk
>>    Robot.
>> - Sort the include headers.
> 
> I updated it, but please wait longer before sending v11.
> 
> Jason

Got it, and I will wait longer.

Thanks,
Cheng Xu