1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #include <linux/bpf.h> |
3 | #include <bpf/bpf_helpers.h> |
4 | |
5 | struct { |
6 | __uint(type, BPF_MAP_TYPE_CPUMAP); |
7 | __type(key, __u32); |
8 | __type(value, struct bpf_cpumap_val); |
9 | __uint(max_entries, 1); |
10 | } cpu_map SEC(".maps" ); |
11 | |
12 | SEC("xdp/cpumap" ) |
13 | int xdp_drop_prog(struct xdp_md *ctx) |
14 | { |
15 | return XDP_DROP; |
16 | } |
17 | |
18 | SEC("freplace" ) |
19 | int xdp_cpumap_prog(struct xdp_md *ctx) |
20 | { |
21 | return bpf_redirect_map(&cpu_map, 0, XDP_PASS); |
22 | } |
23 | |
24 | char _license[] SEC("license" ) = "GPL" ; |
25 | |