diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2024-12-21 00:46:56 +0100 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2025-01-06 09:48:49 +0100 |
| commit | b9ed315d3c4c0c294a4348edb6874d489bac47fa (patch) | |
| tree | eb338a0b1d352e88010fc894d863dfb27b8308b2 /tools/include/uapi | |
| parent | dad704ebe38642cd405e15b9c51263356391355c (diff) | |
netkit: Allow for configuring needed_{head,tail}room
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@iogearbox.net>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/bpf/20241220234658.490686-1-daniel@iogearbox.net
Diffstat (limited to 'tools/include/uapi')
| -rw-r--r-- | tools/include/uapi/linux/if_link.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h index 8516c1ccd57a..7e46ca4cd31b 100644 --- a/tools/include/uapi/linux/if_link.h +++ b/tools/include/uapi/linux/if_link.h @@ -1315,6 +1315,8 @@ enum { IFLA_NETKIT_MODE, IFLA_NETKIT_SCRUB, IFLA_NETKIT_PEER_SCRUB, + IFLA_NETKIT_HEADROOM, + IFLA_NETKIT_TAILROOM, __IFLA_NETKIT_MAX, }; #define IFLA_NETKIT_MAX (__IFLA_NETKIT_MAX - 1) |