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From: Hagen Paul Pfeifer <hagen@jauu.net>
To: David Miller <davem@davemloft.net>
Cc: <leonerd@leonerd.org.uk>, <netdev@vger.kernel.org>
Subject: Re: RFC: New BGF 'LOOP' instruction
Date: Tue, 03 Aug 2010 11:03:21 +0200	[thread overview]
Message-ID: <287257a8aadbeea2a7bb5e57b855dd2d@localhost> (raw)
In-Reply-To: <20100802.221813.43045517.davem@davemloft.net>


On Mon, 02 Aug 2010 22:18:13 -0700 (PDT), David Miller wrote:



> Oh yeah, what is an iteration in your definition?  See this is why I

> totally refuse to add a looping construct to BPF.

> 

> If you just check for a single loop hitting, the user will just use

> a chaining of two looping constructs.  And then three levels of

> indirection, then four, etc.  He can run up to just before exhasting

> the "iteration limit" of one loop, and branch to the next one, and

> so on and so forth.



I am aware of any problems caused by complex instructions. David, I was

rather curious to see an unrecognized and ground breaking instructions, I

don't wanted to scotch any (possible) improvement.



HGN

  parent reply	other threads:[~2010-08-03  9:03 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-02 11:03 RFC: New BGF 'LOOP' instruction Paul LeoNerd Evans
2010-08-02 11:13 ` RFC: New BPF " Paul LeoNerd Evans
2010-08-02 20:16 ` RFC: New BGF " Hagen Paul Pfeifer
2010-08-03  5:18   ` David Miller
2010-08-03  7:07     ` Paul LeoNerd Evans
2010-08-03  7:19       ` David Miller
2010-08-03  9:10         ` Hagen Paul Pfeifer
2010-08-03 13:40           ` Paul LeoNerd Evans
2010-08-03  9:03     ` Hagen Paul Pfeifer [this message]
2010-08-03  7:18   ` RFC: New BPF " Paul LeoNerd Evans
2010-08-03  5:13 ` RFC: New BGF " David Miller
2010-08-03  7:04   ` Paul LeoNerd Evans
2010-08-03  7:18     ` David Miller
2010-08-03 12:58       ` Andi Kleen
2010-08-03 13:07         ` David Miller
2010-08-03 13:34           ` RFC: New BPF " Paul LeoNerd Evans
2010-08-03 13:42             ` Paul LeoNerd Evans
2010-08-03 14:09             ` Rémi Denis-Courmont
2010-08-03 14:13               ` Paul LeoNerd Evans
2010-08-03 14:16                 ` Rémi Denis-Courmont
2010-08-03 14:19                   ` Paul LeoNerd Evans
2010-08-03 15:17                     ` Rémi Denis-Courmont
2010-08-03 15:27                       ` Paul LeoNerd Evans
2010-08-03 14:05           ` RFC: New BGF " Andi Kleen
2010-08-03 14:11             ` Paul LeoNerd Evans
2010-08-03 14:34               ` Paul LeoNerd Evans

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