On Mon, 2007-10-22 at 13:22 +0400, Denis V. Lunev wrote: > We have spent some time with the problem with Alexey and there are no > guesses for now. > > Is it possible to name exact version of Network Manager and all > libraries related + provide us an output of strace with full buffers > send/received from netlink. Something like > strace -v -x -s 32768 <nm>
NM uses netlink in two places; libnl (from Thomas Graf) and some custom code for listening for interface up/down events and wireless events. It looks like that code comes from libnl's lib/handlers.c where it thinks the received message is invalid. I'm pretty sure the code that checks carrier status of the device isn't libnl code; so maybe the error message (which should get fixed of course) isn't in the same path as the link detection. The link detection comes from src/nm-netlink-monitor.c, so maybe we should look at debugging there. Dan > Regards, > Den > > Joseph Fannin wrote: > > Network Manager (the freedesktop.org one) fails to work with Linus's > > current git on a couple of different boxes I have here. All the boxes > > have different NIC types, with different drivers. > > > > I've bisected it down to cd40b7d3983c708aabe3d3008ec64ffce56d33b0 , > > "[NET]: make netlink user -> kernel interface synchronious". I've > > double checked this by testing the kernel as of the immediately > > previous commit; Network Manager works with that one, as it did on all > > my machines in 2.6.23-mm1. > > > > The netlink change seems to confuse N-M, and it somehow decides that > > there's no link beat, so doesn't try to bring up the interface. If I > > run "ifconfig eth0 up", N-M will decide there's a carrier after all > > and takes over. Ethtool detects the link state correctly even with > > the interface down. > > > > If I down the interface again with ifconfig, N-M brings it right back > > up without a problem, but if I kill N-M, it'll down the interface > > before it exits, and fail in the same way as before when restarted. > > > > N-M also emits this error: > > > > "-- Error: Invalid message: type=DONE length=20 flags=<MULTI> > > sequence-nr=1193012574 pid=1185943630" > > > > ...which it doesn't do on kernels where it works normally. > > strace'ing NetworkManager shows that it prints that message just after > > talking over a netlink socket. > > > > Networking otherwise works fine here with the latest git and N-M, if I > > use the ifconfig "trick" to get the link up. > > > > -- > > Joseph Fannin > > [EMAIL PROTECTED] > > > > > > - > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
