Wed, Mar 04, 2026 at 07:15:22PM +0100, kuba@kernel.org wrote:

On Wed, 4 Mar 2026 11:34:13 +0100 Jiri Pirko wrote:

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I have a strong suspicion that the user will want to access all
resources of a device. `devlink resource show [$dev]` should dump 
all resources devlink knows about, including port ones.

What's the reason for the new command?  

You are right, one cmd would do. Good thing someone forgot to implement
dump for it :)  

On a second thought, if we merge multiple objects into one dump, how
does this extend? I mean, the userspace has to check there are no extra
attributes, as they may be used as a handle to another new object
introduced in the future... Idk, it's a bit odd.

That's true, the user space must be able to interpret the object
identifier. So if we extend the command to add more identifiers
we will have to add the bitmask to the dump request, and have
the user space tell the kernel which objects it can recognize.
I was just saying that we don't have to add such attribute now,
maybe leave a comment in a strategic place for our future selves?

Or, alternatively, we can have per-object dumps as we have for all
objects and command right now and leave things simple and
straightforward? I mean, I don't really see a benefit of a single dump
for more objects :/