Re: [RFC PATCH net-next v4 0/9] net/smc: Introduce SMC-D-based OS internal communication acceleration

[Wen Gu]

On 2023/4/5 22:48, Wenjia Zhang wrote:

> Hi Wen,
>
> Thank you for the new version. The discussion on the open issue is still on-going in our organisation internally. I 
> appreciate your patience!
>
> One thing I need to mention during testing the loopback device on our platform is that we get crash, because 
> smc_ism-signal_shutdown() is called by smc_1gr_free_work(), which is called indirectly by smc_conn_free(). Please make 
> sure that it would go to the path of the loopback device cleanly. Any question and consideration is welcome!
>
> Thanks,
> Wenjia

Thank you! Wenjia. Testing on s390 is really helpful.

Since most of the path in smc_ism_signal_shutdown() is inside the preprocessing
macro '#if IS_ENABLED(CONFIG_ISM) ... #endif', so they are not executed in my
test environment, therefore I didn't realized the interface of ops->signal_event
in loopback device and missed the crash.

I will fix this and check for the other parts wrapped by '#if IS_ENABLED(CONFIG_ISM)
... #endif' which I ignored before. Then I will send out a new version.

Thanks,
Wen Gu