netdev - Re: [PATCH 1/2] [IPV4] UDP: Always checksum even if without socket filter

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Message-ID: <20071119152933.GA19126@one.firstfloor.org>
Date:	Mon, 19 Nov 2007 16:29:33 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	David Miller <davem@...emloft.net>
Cc:	andi@...stfloor.org, wangchen@...fujitsu.com,
	herbert@...dor.apana.org.au, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] [IPV4] UDP: Always checksum even if without socket filter

> > > 
> > > All of our options suck, we just have to choose the least sucking one
> > > and right now to me that's decrementing the counter as much as I
> > > empathize with the SNMP application overflow detection issue.
> > 
> > If the SNMP monitor detects an false overflow the error it reports 
> > will be much worse than a single missing packet. So you would replace 
> > one error with a worse error.
> 
> This can be fixed, the above cannot.

I don't see how, short of breaking the interface
(e.g. reporting 64bit or separate overflow counts)
-Andi
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