whatcanGOwrong

go/pkg/mod/github.com/cilium/ebpf@v0.11.0/internal/prog.go

@@ -0,0 +1,11 @@
+package internal
+
+// EmptyBPFContext is the smallest-possible BPF input context to be used for
+// invoking `Program.{Run,Benchmark,Test}`.
+//
+// Programs require a context input buffer of at least 15 bytes. Looking in
+// net/bpf/test_run.c, bpf_test_init() requires that the input is at least
+// ETH_HLEN (14) bytes. As of Linux commit fd18942 ("bpf: Don't redirect packets
+// with invalid pkt_len"), it also requires the skb to be non-empty after
+// removing the Layer 2 header.
+var EmptyBPFContext = make([]byte, 15)