linux-toradex.git/tools/testing/selftests/net/double_udp_encap.sh, branch master Linux kernel for Apalis and Colibri modules selftests: net: tests for add double tunneling GRO/GSO 2026-01-23T19:31:14+00:00 Paolo Abeni pabeni@redhat.com 2026-01-21T16:11:36+00:00 40146bf7555e9c3480b1225dfe7a5306e1b58b13 Create a simple, netns-based topology with double, nested UDP tunnels and perform TSO transfers on top. Explicitly enable GSO and/or GRO and check the skb layout consistency with different configuration allowing (or not) GSO frames to be delivered on the other end. The trickest part is account in a robust way the aggregated/unaggregated packets with double encapsulation: use a classic bpf filter for it. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/61f2c98ba0f73057c2d6f6cb62eb807abd90bf6b.1769011015.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Create a simple, netns-based topology with double, nested UDP tunnels and
perform TSO transfers on top.

Explicitly enable GSO and/or GRO and check the skb layout consistency with
different configuration allowing (or not) GSO frames to be delivered on
the other end.

The trickest part is account in a robust way the aggregated/unaggregated
packets with double encapsulation: use a classic bpf filter for it.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/61f2c98ba0f73057c2d6f6cb62eb807abd90bf6b.1769011015.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>