Create bpf_dbg program to disassemble BPF filters

The bpf_dbg binary prints the instructions included in the BPF filter.
This is particurarly useful for debugging and verifing the generated
filter. E.g:
  ./bpf_dbg test.bpf
  Read 7 entries
  l0:	ld [4]
  l1:	jeq #0xc000003e, l2, l5
  l2:	ld [0]
  l3:	jeq #0x2a, l4, l5
  l4:	ja 5
  l5:	ret #0x7fff0000
  l6:	ret #0x7fc00000

Signed-off-by: Alice Frosi <afrosi@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/disasm.h b/disasm.h
new file mode 100644
index 0000000..4df0cec
--- /dev/null
+++ b/disasm.h
@@ -0,0 +1,9 @@
+#ifndef DISASM_H_
+#define DISASM_H_
+
+#define SIZE_FILTER 1024
+
+void bpf_disasm(const struct sock_filter f, unsigned int i);
+void bpf_disasm_all(const struct sock_filter *f, unsigned int len);
+
+#endif