Here''s a bizarre one.. with todays snapshot (7227) dom0 no longer generates correct ip checksums after running the network-bridge script. I''m not even running xend, just /etc/xen/scripts/network-bridge start. Everything appears to work. dhcpcd works and dom0 gets an ip address off the network. It responds to incoming tcp. But ethereal/tcpdump analysis says outgoing ip packets have bad checksum. My old 20050929 snapshot works ok. The .config files are identical. Kernel config attached. Any ideas on what broke? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 06/10/05, Chris Bainbridge <chris.bainbridge@gmail.com> wrote:> Here''s a bizarre one.. with todays snapshot (7227) dom0 no longer > generates correct ip checksums after running the network-bridge > script. I''m not even running xend, just > /etc/xen/scripts/network-bridge start. Everything appears to work. > dhcpcd works and dom0 gets an ip address off the network. It responds > to incoming tcp. But ethereal/tcpdump analysis says outgoing ip > packets have bad checksum. > > My old 20050929 snapshot works ok. The .config files are identical. > Kernel config attached. Any ideas on what broke?Last nights binary release doesn''t have this problem. Is the config file available? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> > My old 20050929 snapshot works ok. The .config files are identical. > > Kernel config attached. Any ideas on what broke? > > Last nights binary release doesn''t have this problem. Is the > config file available?linux-2.6-sparse/arch/xen/configs ian _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 06/10/05, Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> wrote:> > > My old 20050929 snapshot works ok. The .config files are identical. > > > Kernel config attached. Any ideas on what broke? > > > > Last nights binary release doesn''t have this problem. Is the > > config file available? > > linux-2.6-sparse/arch/xen/configsUsing that config, with 7234. I built a dom0 kernel and the problem is still present. Weird. What gcc and binutils are you using? I''ve got gcc 3.4.4 and binutils-2.15.92.0.2. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> -----Original Message----- > From: Chris Bainbridge [mailto:chris.bainbridge@gmail.com] > Sent: 06 October 2005 16:54 > To: Ian Pratt > Cc: xen-devel > Subject: Re: [Xen-devel] Re: bad ip checksums > > On 06/10/05, Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> wrote: > > > > My old 20050929 snapshot works ok. The .config files > are identical. > > > > Kernel config attached. Any ideas on what broke? > > > > > > Last nights binary release doesn''t have this problem. Is > the config > > > file available? > > > > linux-2.6-sparse/arch/xen/configs > > Using that config, with 7234. I built a dom0 kernel and the > problem is still present. Weird. What gcc and binutils are > you using? I''ve got gcc 3.4.4 and binutils-2.15.92.0.2.The nightly build is done on an FC2 box: gcc 3.3.3 binutils 2.15.90.0.3 Please can you verify that this is indeed a compiler specific issue. Thanks, Ian _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 06/10/05, Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> wrote:> > > > > On 06/10/05, Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk> wrote: > > > > > My old 20050929 snapshot works ok. The .config files > > are identical. > > > > > Kernel config attached. Any ideas on what broke? > > > > > > > > Last nights binary release doesn''t have this problem. Is > > the config > > > > file available? > > > > > > linux-2.6-sparse/arch/xen/configs > > > > Using that config, with 7234. I built a dom0 kernel and the > > problem is still present. Weird. What gcc and binutils are > > you using? I''ve got gcc 3.4.4 and binutils-2.15.92.0.2. > > The nightly build is done on an FC2 box: > > gcc 3.3.3 binutils 2.15.90.0.3 > > Please can you verify that this is indeed a compiler specific issue.Well, I''ve tried updating to binutils-2.15.91, then downgrading to gcc-3.3.5 and binutils 2.15.92.0.2, and nothing worked. It''s a mystery. Your binary build works fine, but my kernels built from source are failing in an odd way. Is it possible to get a post-patched full xen kernel sources anywhere? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> Well, I''ve tried updating to binutils-2.15.91, then downgrading to > gcc-3.3.5 and binutils 2.15.92.0.2, and nothing worked. > > It''s a mystery. Your binary build works fine, but my kernels > built from source are failing in an odd way. Is it possible > to get a post-patched full xen kernel sources anywhere?It''s incredibly unlikely that you''re ending up with a different final src tree. What''s more likely is that when you build from source you''re picking up an old config file from dist/install/boot that then results in you getting a duff binary. Do ''make mrproper'' before ''make world'' to delete the old configs. Ian _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Are you sure these are really bad checksums? Or is maybe checksum off loading happening somewhere? Regards, Ted _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel