linux-kernel - Re: [PATCH net-next 0/3] net: remove dsa.h from netdevice.h

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Message-ID: <56146A74.8050807@gmail.com>
Date:	Tue, 06 Oct 2015 17:42:28 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
	netdev@...r.kernel.org
CC:	linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Scott Feldman <sfeldma@...il.com>,
	Jiri Pirko <jiri@...nulli.us>, Andrew Lunn <andrew@...n.ch>,
	Neil Armstrong <narmstrong@...libre.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: Re: [PATCH net-next 0/3] net: remove dsa.h from netdevice.h

On 06/10/15 14:54, Vivien Didelot wrote:
> In order to push switchdev objects down to DSA drivers, I need to include
> switchdev.h in dsa.h. But compilation fails because of a circular dependency
> issue, since dsa.h is also included in linux/netdevice.h.

Just for the record, what does this circular dependency looks like? Last
I tried something in that front, I ended-up forward declaring the
'switchdev_obj' structure, but that was weeks ago before the whole
restructuring, so could be pointless now.

> 
> dsa.h is included for two purposes: to have the definition of struct
> dsa_switch_tree; and to have access to dsa_uses_tagged_protocol(), used by
> netdev_uses_dsa().
> 
> This patchset forward declares struct dsa_switch_tree; adds a new uses_hw_tag
> boolean to struct net_device, which is more explicit than the DSA helper, and
> finally get rid of the dsa.h include.
> 
> With this patchset, switchdev.h can safely be included in dsa.h.
> 
> Vivien Didelot (3):
>   net: dsa: add uses_hw_tag
>   net: dsa: include dsa.h in dsa_priv.h
>   net: remove dsa.h include from linux/netdevice.h
> 
>  include/linux/netdevice.h | 9 ++++++---
>  include/net/dsa.h         | 5 -----
>  net/dsa/dsa.c             | 1 +
>  net/dsa/dsa_priv.h        | 1 +
>  4 files changed, 8 insertions(+), 8 deletions(-)
> 


-- 
Florian
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