netdev - Re: [PATCHv2] net: Define enum for the bits used in features.

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Date:	Wed, 25 May 2011 09:58:51 +0200
From:	Hagen Paul Pfeifer <hagen@...u.net>
To:	Mahesh Bandewar <maheshb@...gle.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Tom Herbert <therbert@...gle.com>,
	Michał Mirosław <mirqus@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>
Subject: Re: [PATCHv2] net: Define enum for the bits used in features.


On Tue, 24 May 2011 18:56:07 -0700, Mahesh Bandewar wrote:
> Little bit cleanup by defining enum for all bits used. Also use those
enum
> values to redefine flags.

Where is the advantage? Now I need to add 2 lines at two different places.

#define NETIF_F_IP_CSUM		BIT2FLAG(IP_CSUM_BIT)

Confuses me more compared to a simple 

#define NETIF_F_IP_CSUM		(1 << 2)


The enum netdev_features namespace is not really unique (e.g.
RESERVED16_BIT).


For me the modifications are harder to understand, my tools are confused
and I see no real advantage, only more indirection introduced.


Hagen
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