This patch series adds support for testing flow dissector BPF programs by
extending already existing BPF_PROG_TEST_RUN. The goal is to have a
packet as an input and `struct bpf_flow_key' as an output. That way
we can easily test flow dissector programs' behavior.
I've also modified existing test_progs.c test to do a simple flow
dissector run as well.
* first patch introduces new __skb_flow_bpf_dissect to simplify
sharing between __skb_flow_bpf_dissect and BPF_PROG_TEST_RUN
* second patch adds actual BPF_PROG_TEST_RUN support
* third patch adds example usage to the selftests
Stanislav Fomichev (3):
net/flow_dissector: move bpf case into __skb_flow_bpf_dissect
bpf: add BPF_PROG_TEST_RUN support for flow dissector
selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow
dissector
include/linux/bpf.h | 3 +
include/linux/skbuff.h | 5 ++
net/bpf/test_run.c | 76 +++++++++++++++--
net/core/filter.c | 1 +
net/core/flow_dissector.c | 83 +++++++++++--------
tools/testing/selftests/bpf/Makefile | 3 +
.../selftests/bpf/flow_dissector_load.c | 43 ++--------
.../selftests/bpf/flow_dissector_load.h | 55 ++++++++++++
tools/testing/selftests/bpf/test_progs.c | 76 ++++++++++++++++-
9 files changed, 265 insertions(+), 80 deletions(-)
create mode 100644 tools/testing/selftests/bpf/flow_dissector_load.h
--
2.20.0.rc1.387.gf8505762e3-goog
