[ovs-dev] [PATCH] datapath: Tolerate backporting of rtnl_link_stats64 (as done on RHEL 6).

[Ben Pfaff]

On Thu, Feb 03, 2011 at 05:42:59PM -0800, Jesse Gross wrote:
> On Thu, Feb 3, 2011 at 4:04 PM, Ben Pfaff <blp at nicira.com> wrote:
> > Red Hat Enterprise Linux 6 has a 2.6.32 kernel but it backports the
> > rtnl_link_stats64 structure that was introduced in 2.6.35, so we need to
> > check whether it was defined instead of just guessing based on the kernel
> > version number.
> >
> > Build-tested only, on 2.6.32-71.14.1.el6 (RHEL 6),
> > linux-2.6.18-128.1.6.el5.xs5.5.0.496.101 (XenServer 5.5.0),
> > 2.6.18-128.1.6.el5.xs5.5.0.505.1024xen (XenServer 5.5.0 update 1),
> > and upstream 2.6.18, 2.6.26, 2.6.29, 2.6.33, 2.6.34, 2.6.36, all for i386,
> > plus 2.6.36 for x86-64.
> >
> > My machine's userspace headers have <linux/if_link.h> but not
> > rtnl_link_stats64. ?I didn't test with other userspace headers.
> 
> The problem that I ran into (and with this as well) is that the
> userspace header check never finds rtnl_link_stats64 even if it
> exists.  So on my machine, which has 2.6.35 userspace and kernel, I
> get:

When I edited my /usr/include/linux/if_link.h by hand to include
rtnl_link_stats64, everything built fine.  So something else must be in
play here.  What's in config.log regarding rtnl_link_stats64?

What distro is on your machine?