Date: Sun, 7 Sep 2003 14:20:39 -0400 From: David Gilbert <dgilbert@dclg.ca> To: "M. Warner Losh" <imp@bsdimp.com> Cc: ler@lerctr.org Subject: Re: devd *NOT* called on wi0 insert? Message-ID: <16219.30455.762472.264053@canoe.dclg.ca> In-Reply-To: <20030905.133003.52134645.imp@bsdimp.com> References: <18850000.1062771730@lerlaptop.iadfw.net> <20030905.133003.52134645.imp@bsdimp.com>
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>>>>> "M" == M Warner Losh <imp@bsdimp.com> writes: M> In message: <18850000.1062771730@lerlaptop.iadfw.net> Larry M> Rosenman <ler@lerctr.org> writes: : I have a (within the week) M> -CURRENT system. If I boot with my Linksys : WPC11 V.3 card M> inserted : I get the dhcp actions and all is fine. If I remove the M> card, we don't : kill off dhclient. : : If I boot without the Actually, I think devd needs to be significantly smarter. Consider the average laptop: one or more permanent interfaces and one or more transient interfaces. Currently, if bge0 (my permanent interface) has link at boot, it gets dhclient. Similarly to the origional poster, if wi0 is inserted at boot, it gets dhclient. devd doesn't seem to do much else. There is a caveat, of course. You can't run multiple copies of dhclient (say one for each interface). This is broken. You must, in fact, run one copy of dhclient listing all the interfaces to configure. This is contrary (say) to moused ... which works well with multiple mice. Ideally, you would start dhclient on an interface when it had link and stop it when it lost link. You might want to put a 10 or 15 second timeout on that (as it could be annoying with a flakey controller), but this makes sense. In this case, devd would not only have to watch changes to the device tree, but device state transitions. Less ideally, dhclient should run on all capable interfaces whenever they're present. In the current scheme, this requires some external smarts as you must kill off the current dhclient and restart it with a new list of interfaces. Dave. -- ============================================================================ |David Gilbert, Independent Contractor. | Two things can only be | |Mail: dave@daveg.ca | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================
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