netdev - Re: [RFC][PATCH 1/4] skbtrace: core feature

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Message-ID: <1341979398.3265.6648.camel@edumazet-glaptop>
Date:	Wed, 11 Jul 2012 06:03:18 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Li Yu <raise.sail@...il.com>
Cc:	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/4] skbtrace: core feature

On Wed, 2012-07-11 at 10:17 +0800, Li Yu wrote:
> From: Li Yu <bingtian.ly@...bao.com>
> 
> This implements core feature of skbtrace, which contains glue code of
> tracepoints subsystem and relay file system, and provide skbtrace API
> for particular networking traces.
> 
> Thanks

Hi Li

This seems a huge amount of code, on an already complex stack.

I am not convinced its needed. It looks like a debugging aid you had to
write in order to understand better linux network stack.

Lets see if you manage to maintain this for a while before considering
upstreaming it.

You said that some 'buggy' drivers set rxhash to zero, but its a valid
operation.

You said 'it seems that RPS hashing can not work well for some corner
cases', but its a known fact.

Thanks

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