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