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Date:	Wed, 14 May 2008 18:17:41 +0200
From:	Krzysztof Halasa <>
To:	David Miller <>
Subject: Re: [PATCH v2] Re: WAN: new PPP code for generic HDLC

BTW: The dev->ml_priv addition is obviously a good step but I guess
you don't need the dev->priv hackery duplicated with dev->ml_priv.

Can't test it at the moment but I'd leave dev->priv alone and only get
rid of the syncppp_ptr here. Then I'd simply use dev->ml_priv as
syncppp_ptr and dev->priv would be a private driver pointer, as
usual. Generic HDLC uses dev->priv for itself but the relevant hw
drivers use hdlc->priv instead so it's not a problem.

When syncppp.c is removed we can use dev->ml_priv for HDLC layer,
dev->priv for hw driver, and hdlc->priv would be no longer needed.

I mean the following:

David Miller <> writes:

> --- a/include/net/syncppp.h
> +++ b/include/net/syncppp.h
> @@ -59,7 +59,7 @@ struct ppp_device
>  static inline struct sppp *sppp_of(struct net_device *dev) 
>  {
> -	struct ppp_device **ppp = dev->priv;
> +	struct ppp_device **ppp = dev->ml_priv;
>  	BUG_ON((*ppp)->dev != dev);
>  	return &(*ppp)->sppp;
>  }

would become:

static inline struct sppp *sppp_of(struct net_device *dev) 
	return dev->ml_priv;

The changes are not automatic, I'll look at it when able.
Krzysztof Halasa
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