12 lines
519 B
Go
12 lines
519 B
Go
package internal
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// EmptyBPFContext is the smallest-possible BPF input context to be used for
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// invoking `Program.{Run,Benchmark,Test}`.
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//
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// Programs require a context input buffer of at least 15 bytes. Looking in
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// net/bpf/test_run.c, bpf_test_init() requires that the input is at least
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// ETH_HLEN (14) bytes. As of Linux commit fd18942 ("bpf: Don't redirect packets
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// with invalid pkt_len"), it also requires the skb to be non-empty after
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// removing the Layer 2 header.
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var EmptyBPFContext = make([]byte, 15)
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