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7b2ea1151e
Refactor the helper masks for bpf_skb_adjust_room() flags to simplify validation logic and introduce: - BPF_F_ADJ_ROOM_ENCAP_MASK - BPF_F_ADJ_ROOM_DECAP_MASK Refactor existing validation checks in bpf_skb_net_shrink() and bpf_skb_adjust_room() to use the new masks (no behavior change). This is in preparation for supporting the new decap flags. Co-developed-by: Max Tottenham <mtottenh@akamai.com> Co-developed-by: Anna Glasgall <aglasgal@akamai.com> Signed-off-by: Max Tottenham <mtottenh@akamai.com> Signed-off-by: Anna Glasgall <aglasgal@akamai.com> Signed-off-by: Nick Hudson <nhudson@akamai.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/bpf/20260812083115.73100-3-nhudson@akamai.com