On Sat, Oct 10, 2009 at 12:23 AM, Greg KH <greg@xxxxxxxxx> wrote: > On Fri, Oct 09, 2009 at 11:40:57PM -0500, Matt Domsch wrote: >> The fundamental roadblock to this is that enumeration != naming, >> except that it is for network devices, and we keep changing the >> enumeration order. > > No, the hardware changes the enumeration order, it places _no_ > guarantees on what order stuff will be found in. So this is not the > kernel changing, just to be clear. > > Again, I have a machine here that likes to reorder PCI devices every 4th > or so boot times, and that's fine according to the PCI spec. Yeah, it's > a crappy BIOS, but the manufacturer rightly pointed out that it is not > in violation of anything. > >> Today, port naming is completely nondeterministic. If you have but >> one NIC, there are few chances to get the name wrong (it'll be eth0). >> If you have >1 NIC, chances increase to get it wrong. > > That is why all distros name network devices based on the only > deterministic thing they have today, the MAC address. I still fail to > see why you do not like this solution, it is honestly the only way to > properly name network devices in a sane manner. > > All distros also provide a way to easily rename the network devices, to > place a specific name on a specific MAC address, so again, this should > all be solved already. > > No matter how badly your BIOS teams mess up the PCI enumeration order :) > > thanks, > > greg k-h > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > So when an add-in PCI NIC has a lower MAC than the motherboard NICs, the add-in cards will come before the motherboard NICs. i don't like it. But please whatever is done, make sure ping and tracert still works when telling it to use a ethX source interface: eth0 = 4.3.2.8, the default gateway is thru eth1. ping -I eth0 208.67.222.222 FAILS ping -I 4.3.2.8 208.67.222.222 WORKS tracert -i eth0 -I 208.67.222.222 FAILS tracert -s 4.3.2.8 -I 208.67.222.222 WORKS tracert -i eth0 208.67.222.222 FAILS tracert -s 4.3.2.8 208.67.222.222 WORKS -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
