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: ---------- v2 -> v3 v2: https://lore.kernel.org/bpf/20210527201341.7128-1-zeffron@xxxxxxxxxxxxx/ * Check errno first in selftests * Use DECLARE_LIBBPF_OPTS * Rename tattr to opts in selftests * Remove extra new line * Rename convert_xdpmd_to_xdpb to xdp_convert_md_to_buff * Rename convert_xdpb_to_xdpmd to xdp_convert_buff_to_md * Move declaration of device and rxqueue in xdp_convert_md_to_buff to patch 2 * Reorder the kfree calls in bpf_prog_test_run_xdp v1 -> v2 v1: https://lore.kernel.org/bpf/20210524220555.251473-1-zeffron@xxxxxxxxxxxxx * 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 | 114 ++++++++++++++++++ .../bpf/progs/test_xdp_context_test_run.c | 20 +++ 4 files changed, 223 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: 05924717ac704a868053652b20036aa3a2273e26 -- 2.31.1
