[PATCH bpf-next v2 0/3] bpf: support input xdp_md context in BPF_PROG_TEST_RUN

[Zvi Effron <zeffron@riotgames.com>]

This patchset adds support for passing an xdp_md via ctx_in/ctx_out in bpf_attr
for BPF_PROG_TEST_RUN of XDP programs.

Patch 1 adds initial support for passing XDP meta data in addition to packet
data.

Patch 2 adds support for also specifying the ingress interface and rx queue.

Patch 3 adds selftests to ensure functionality is correct.

Changelog:
----------
v1 -> v2
v1: https://lore.kernel.org/bpf/20210524220555.251473-1-zeffron@riotgames.com

 * Fix null pointer dereference with no context
 * Use the BPF skeleton and replace CHECK with ASSERT macros

Zvi Effron (3):
  bpf: support input xdp_md context in BPF_PROG_TEST_RUN
  bpf: support specifying ingress via xdp_md context in
    BPF_PROG_TEST_RUN
  selftests/bpf: Add test for xdp_md context in BPF_PROG_TEST_RUN

 include/uapi/linux/bpf.h                      |   3 -
 net/bpf/test_run.c                            |  96 +++++++++++++--
 .../bpf/prog_tests/xdp_context_test_run.c     | 116 ++++++++++++++++++
 .../bpf/progs/test_xdp_context_test_run.c     |  20 +++
 4 files changed, 225 insertions(+), 10 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c


base-commit: d6a6a55518c16040a369360255b355b7a2a261de
-- 
2.31.1