netdev - Re: Validation of forward

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Date:   Tue, 2 Jul 2019 23:35:40 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Cc:     Roopa Prabhu <roopa@...ulusnetworks.com>,
        bridge@...ts.linux-foundation.org, netdev <netdev@...r.kernel.org>
Subject: Re: Validation of forward_delay seems wrong...

> Hi Andrew,
> The man page is wrong, these have been in USER_HZ scaled clock_t format from the beginning.
> TBH a lot of the time/delay bridge config options are messed up like that.

Hi Nikola

Yes, that is a mess.

arch/alpha/include/asm/param.h:# define USER_HZ						1024
arch/ia64/include/asm/param.h:# define USER_HZ						HZ
include/asm-generic/param.h:# define USER_HZ						100

And ia64 does
# define HZ             CONFIG_HZ

So it seems pretty hard for user space to get this right in a generic
fashion.

	Andrew