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Date:   Sat, 08 Aug 2020 14:07:50 -0700 (PDT)
From:   David Miller <>
Subject: Re: [RFC 0/4] netlink: binary attribute range validation

From: Johannes Berg <>
Date: Wed,  5 Aug 2020 16:03:20 +0200

> This is something I'd been thinking about for a while; we already
> have NLA_MIN_LEN, NLA_BINARY (with a max len), and NLA_EXACT_LEN,
> but in quite a few places (as you can see in the last patch here)
> we need a range, and we already have a way to encode ranges for
> integer ranges, so it's pretty easy to use that for binary length
> ranges as well.
> So at least for wireless this seems useful to save some code, and
> to (mostly) expose the actual limits to userspace via the policy
> export that we have now.
> What do you think?

This looks great to me.

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