netdev - Re: [PATCH] skb: add a comment to skb_csum

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Date:	Tue, 22 Jan 2013 23:13:53 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	sanagi.koki@...fujitsu.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] skb: add a comment to skb_csum_unnecessary to avoid
 miuse

From: "Sanagi, Koki" <sanagi.koki@...fujitsu.com>
Date: Wed, 23 Jan 2013 02:32:52 +0000

>> From: Koki Sanagi <sanagi.koki@...fujitsu.com>
>> Date: Wed, 23 Jan 2013 09:30:16 +0900
>> 
>> > Due to its name and appearance, someone thinks this only checks if
>> > ip_summed is CHECKSUM_UNNECESARRY.  But actually, this returns true
>> > even if ip_summed is CHECKSUM_PARTIAL.  To avoid misuse, this patch a
>> > comment which specifies that CHECKSUM_PARTIAL is OK.
>> >
>> > Signed-off-by: Koki Sanagi <sanagi.koki@...fujitsu.com>
>> 
>> I'm not applying this, sorry.  It's a one line function and it's not so
>> non-obvious that it deserves an 8 line comment.
> 
> OK.  I just felt weird that CHECKSUM_* is not bit flag but this function handles
> it as if it was bit flag.

The function name says what it does, it determines whether a checksum
is necessary or not.  How that is implemented is another issue.
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