Re: [RFC net-next PATCH 0/2] net: Split ndo_set_rx_mode into snapshot and deferred write

[I Viswanath]

On Thu, 23 Oct 2025 at 05:16, Jacob Keller <jacob.e.keller@xxxxxxxxx> wrote:
>
> Is there any mechanism to make this guarantee either implemented or at
> least verified by the core? If not that, what about some sort of way to
> lint driver code and make sure its correct?

>From my observations, The sane drivers modify rx_config related
registers either through the set_rx_mode function or the unlocked
version (prefixed with __)
I am not sure how to convert this to a validation of that kind.

Basically the end result should be that warnings are generated when
those functions are called
normally but not when they are called through ops->set_rx_mode.
Coccinelle might be able to do
something like this.

Related to this, I don't think a sed would be sufficient as there
might be (in theory) cases where
the function has to do a "synchronous" rx write (flush the work queue)
for correctness
but it should be good enough for most cases.

I am also not sure what is to be done if the scheduled function just
never executes.