github.com/cilium/ebpf@v0.15.1-0.20240517100537-8079b37aa138/internal/prog.go (about) 1 package internal 2 3 // EmptyBPFContext is the smallest-possible BPF input context to be used for 4 // invoking `Program.{Run,Benchmark,Test}`. 5 // 6 // Programs require a context input buffer of at least 15 bytes. Looking in 7 // net/bpf/test_run.c, bpf_test_init() requires that the input is at least 8 // ETH_HLEN (14) bytes. As of Linux commit fd18942 ("bpf: Don't redirect packets 9 // with invalid pkt_len"), it also requires the skb to be non-empty after 10 // removing the Layer 2 header. 11 var EmptyBPFContext = make([]byte, 15)