Date: Sun, 28 May 2017 10:23:27 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Kamil Czekirda <kczekirda@FreeBSD.org>, Baptiste Daroussin <bapt@FreeBSD.org> Cc: Mariusz Zaborski <oshogbo@FreeBSD.org>, Steven Hartland <smh@FreeBSD.org>, "George V. Neville-Neil" <gnn@FreeBSD.org>, Toomas Soome <tsoome@FreeBSD.org>, freebsd-net@FreeBSD.org Subject: Re: svn commit: r314948 - in head: lib/libstand sys/boot/i386/libi386 Message-ID: <af46d4a1-02ca-ca27-657f-2d111b246077@FreeBSD.org> In-Reply-To: <CADSgWNFd=ZffiG5dyANX-VO=YLFgJ5za%2BESNsPCuw%2Bfdg6p8%2Bg@mail.gmail.com> References: <201703090601.v2961OJx077853@repo.freebsd.org> <c5f695ad-53f8-b5cd-2b20-d3eeefddf7bb@FreeBSD.org> <20170526210908.ykqalqbetxp4f27p@ivaldir.net> <CADSgWNFd=ZffiG5dyANX-VO=YLFgJ5za%2BESNsPCuw%2Bfdg6p8%2Bg@mail.gmail.com>
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On 28/05/2017 01:09, Kamil Czekirda wrote: > In initial revision I noticed, that I'm not sure it should be default behavior. > In a lot of installations pxeloader can base on the cache and doesn't require > second, full request with the same answer. In that situation we can switch off > bootp() and I think it would be nice to have this switch and give them to users. > Flag during compilation is sensible. > > In very simple and popular case we have chain with four requests for the same > information (!): > PXE (NIC) -> iPXE -> pxeloader -> dhclient > and it's possible to switch off request from iPXE and pxeloader without breaking > boot process. Well, the information given to PXE/NIC and iPXE is not exactly the same as bootfile must differ. Also, a nit: as far as I know, it's currently impossible to run dhclient on a network booted _diskless_ system. So, yeah, in some setups we can shave off a request from pxeboot and it probably makes sense to have that option. -- Andriy Gapon
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