netdev - Re: [PATCH v2 net-next] net: ptp: oki-semi: fix build dependency

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Date:	Mon, 31 Mar 2014 20:55:38 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Alexei Starovoitov <ast@...mgrid.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Daniel Borkmann <dborkman@...hat.com>, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next] net: ptp: oki-semi: fix build dependency

On Mon, Mar 31, 2014 at 11:02:21AM -0700, Alexei Starovoitov wrote:

> Richard,
> thank you for suggestion.
> oki-semi depends on ptp, so it's cleaner to move ptp_classify_raw there,
> instead of making it unconditionally available in net/core
 
> Daniel,
> timestamping has its own copy of PTP_FILTER, since timestamping
> doesn't depend on ptp and I didn't want to add circular dependency,
> since some of ptp pieces depend on timestamping, but not the others

We don't really need two copies. As long as you are refactoring this,
why not reduce it to just one filter?

Something like

#if defined(CONFIG_PTP_1588_CLOCK) || defined(CONFIG_NETWORK_PHY_TIMESTAMPING)

... code here ...

#endif

could go into filter.c or somewhere else in the stack.

Thanks,
Richard

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