Re: [PATCH v2 2/5] bpf: add BPF_F_ADJ_ROOM_DECAP_* flags for tunnel decapsulation
From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: 2026-03-21 00:39:48
Also in:
bpf, lkml
Nick Hudson wrote:
Add new bpf_skb_adjust_room() decapsulation flags: - BPF_F_ADJ_ROOM_DECAP_L4_GRE - BPF_F_ADJ_ROOM_DECAP_L4_UDP - BPF_F_ADJ_ROOM_DECAP_IPXIP4 - BPF_F_ADJ_ROOM_DECAP_IPXIP6 These flags let BPF programs describe which tunnel layer is being removed, so later changes can update tunnel-related GSO state accordingly during decapsulation. This patch only introduces the UAPI flag definitions and helper documentation. Co-developed-by: Max Tottenham <redacted> Signed-off-by: Max Tottenham <redacted> Co-developed-by: Anna Glasgall <redacted> Signed-off-by: Anna Glasgall <redacted> Signed-off-by: Nick Hudson <redacted>
Reviewed-by: Willem de Bruijn <willemb@google.com>