On 12/21/24 01:46, Daniel Borkmann wrote:
> Allow the user to configure needed_{head,tail}room for both netkit
> devices. The idea is similar to 163e529200af ("veth: implement
> ndo_set_rx_headroom") with the difference that the two parameters
> can be specified upon device creation. By default the current behavior
> stays as is which is needed_{head,tail}room is 0.
>
> In case of Cilium, for example, the netkit devices are not enslaved
> into a bridge or openvswitch device (rather, BPF-based redirection
> is used out of tcx), and as such these parameters are not propagated
> into the Pod's netns via peer device.
>
> Given Cilium can run in vxlan/geneve tunneling mode (needed_headroom)
> and/or be used in combination with WireGuard (needed_{head,tail}room),
> allow the Cilium CNI plugin to specify these two upon netkit device
> creation.
>
> Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
> Cc: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>
> ---
> v2:
> - static struct (Jakub)
>
> drivers/net/netkit.c | 66 +++++++++++++++++++-----------
> include/uapi/linux/if_link.h | 2 +
> tools/include/uapi/linux/if_link.h | 2 +
> 3 files changed, 47 insertions(+), 23 deletions(-)
>
need coffee, just acked v1 and was looking at v2..
Acked-by: Nikolay Aleksandrov <razor@xxxxxxxxxxxxx>
