| // 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"; |