selftests/bpf: add flow dissector bpf_skb_load_bytes helper test
authorStanislav Fomichev <sdf@google.com>
Mon, 22 Apr 2019 15:55:49 +0000 (08:55 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Tue, 23 Apr 2019 16:36:34 +0000 (18:36 +0200)
commitc9cb2c1e11cee75b3af5699add3302a3997f78e4
tree5223f0713124af66fc29f16bedae1c16c38a717f
parentc43f1255b866b423d2381f77eaa2cbc64a9c49aa
selftests/bpf: add flow dissector bpf_skb_load_bytes helper test

When flow dissector is called without skb, we want to make sure
bpf_skb_load_bytes invocations return error. Add small test which tries
to read single byte from a packet.

bpf_skb_load_bytes should always fail under BPF_PROG_TEST_RUN because
it was converted to the skb-less mode.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c [new file with mode: 0644]