// SPDX-License-Identifier: GPL-2.0 #include <linux/bpf.h> #include <bpf/bpf_helpers.h> struct { __uint(type, BPF_MAP_TYPE_CPUMAP); __type(key, __u32); __type(value, struct bpf_cpumap_val); __uint(max_entries, 1); } cpu_map SEC(".maps"); SEC("xdp/cpumap") int xdp_drop_prog(struct xdp_md *ctx) { return XDP_DROP; } SEC("freplace") int xdp_cpumap_prog(struct xdp_md *ctx) { return bpf_redirect_map(&cpu_map, 0, XDP_PASS); } char _license[] SEC("license") = "GPL";