Bug#933800: AF_XDP missing in libc6-dev

[Ryan Goodfellow <ry@mergetb.org>]

Package: libc6-dev
Version: 2.28-10

There is currently a mismatch between libc6 on Debian stable and the
underlying kernel with respect to XDP. The kernel has support for XDP
sockets, but the libc6 library does not have the associated macro
AF_XDP, to specify the address family.

The addition of the AF_XDP macro to glibc is here:

https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=38b0593e9a862c3b35392a0f5b202696b8116aa3;hp=5cd7dbdea13eb302620491ef44837b17e9d39c5a

So it would seem that this does not show up until glibc version 2.29.
However, since the Debian stable kernel has this functionality,
perhaps this is worth patching in?

I am currently running Debian stable with kernel 4.19.0-5 Debian
4.19.37-5+deb10u1 (2019-07-19) and have the latest libc6-dev 2.28-10
package installed.

-- 
~ ry