From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: [patch 0/4] [resend] Add configuration options to disable features not needed on embedded devices Date: Thu, 31 Jul 2008 11:15:16 +0100 Message-ID: <1217499316.3454.118.camel@pmac.infradead.org> References: <1217497912.3454.95.camel@pmac.infradead.org> <20080731.025547.35826309.davem@davemloft.net> <1217498355.3454.103.camel@pmac.infradead.org> <20080731.030205.153067850.davem@davemloft.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080731.030205.153067850.davem@davemloft.net> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: David Miller Cc: torvalds@linux-foundation.org, thomas.petazzoni@free-electrons.com, linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org, michael@free-electrons.com On Thu, 2008-07-31 at 03:02 -0700, David Miller wrote: > I explained why I didn't want to apply the IGMP one too. > > Andrew didn't like my objections, but that doesn't mean I > need to defend my position further. You said that it was part of the core BSD socket API and "Like TCP and UDP, multicast capabilities are something applications can always depend upon being available". Andrew's response was that embedded devices have full control over their userspace and that they are in a position to _know_ that they never use multicast, so your argument is bogus. If they _know_ they don't want multicast, it makes a lot of sense for them to turn it off. While I agree with Andrew's observation, I'd also respectfully submit that your argument is more fundamentally bogus than that. TCP and UDP are _not_ universally available. They go away if you set CONFIG_INET=n. -- dwmw2