Re: [PATCH 3/4] Kconfig: Add support for testing RDMA with software RoCE

[Zhu Yanjun <zyjzyj2000@gmail.com>]

On 03.06.24 18:06, cel@kernel.org wrote:
> From: Chuck Lever <chuck.lever@oracle.com>
>
> Add kdevops config option to use rxe rather than siw for RDMA. rxe
> is the kernel's software RoCE driver, and like siw, it utilizes a
> standard Ethernet device.

Hi, Chuck

Thanks a lot. I am very glad that rxe is used in kdevops. I looked 
through this software.

It is very powerful. But because I have not an appropriate host at hand, 
I can not install

kdevops in the local hosts successfully.

After I can find a good host, I will install kdevops in the host and 
verify the functionality of rxe

of the new linux kernel release.

Chuck, thanks a lot for your efforts to bring rxe into kdevops (a 
powerful tool).

Zhu Yanjun

>
> Suggested-by: Zhu Yanjun <zyjzyj2000@gmail.com>
> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> ---
>   kconfigs/Kconfig.bringup.goals | 10 ++++++++++
>   scripts/rdma.Makefile          | 12 ++++++++++++
>   2 files changed, 22 insertions(+)
>
> diff --git a/kconfigs/Kconfig.bringup.goals b/kconfigs/Kconfig.bringup.goals
> index e8629ebea5e0..794742530e9e 100644
> --- a/kconfigs/Kconfig.bringup.goals
> +++ b/kconfigs/Kconfig.bringup.goals
> @@ -100,6 +100,16 @@ config KDEVOPS_SETUP_RDMA_SIW
>   	  To use this device driver, enable the CONFIG_RDMA_SIW
>   	  option in your test kernels.
>   
> +config KDEVOPS_SETUP_RDMA_RXE
> +	bool "rxe"
> +	help
> +	  Provision software-emulated RDMA on target nodes via the
> +	  kernel rxe.ko driver. rxe can be used with any standard
> +	  Ethernet device, including virtio-net devices.
> +
> +	  To use this device driver, enable the CONFIG_RDMA_RXE
> +	  option in your test kernels.
> +
>   endchoice
>   
>   config KDEVOPS_SETUP_KTLS
> diff --git a/scripts/rdma.Makefile b/scripts/rdma.Makefile
> index d7cdf0062638..dd2a70120eb2 100644
> --- a/scripts/rdma.Makefile
> +++ b/scripts/rdma.Makefile
> @@ -9,3 +9,15 @@ KDEVOPS_BRING_UP_DEPS += siw
>   PHONY += siw
>   
>   endif
> +
> +ifeq (y,$(CONFIG_KDEVOPS_SETUP_RDMA_RXE))
> +
> +rxe:
> +	$(Q)ansible-playbook $(ANSIBLE_VERBOSE) --extra-vars=@./extra_vars.yaml \
> +		-f 30 -i hosts playbooks/rxe.yml
> +
> +KDEVOPS_BRING_UP_DEPS += rxe
> +
> +PHONY += rxe
> +
> +endif

-- 
Best