[PATCH bpf-next v4 0/2] bpf, xdp: Add tracepoint to xdp attaching failure

Leon Hwang
2023-07-30T11:50:11Z

This series introduces a new tracepoint in bpf_xdp_link_attach(). By
this tracepoint, error message will be captured when error happens in
dev_xdp_attach(), e.g. invalid attaching flags.

v3 -> v4:
* Fix selftest-crashed issue.

Leon Hwang (2):
bpf, xdp: Add tracepoint to xdp attaching failure
selftests/bpf: Add testcase for xdp attaching failure tracepoint

include/trace/events/xdp.h | 17 +++++
net/core/dev.c | 5 +-
.../selftests/bpf/prog_tests/xdp_attach.c | 65 +++++++++++++++++++
.../bpf/progs/test_xdp_attach_fail.c | 54 +++++++++++++++
4 files changed, 140 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_attach_fail.c

base-commit: a33d978500acd8fb67efac9773ba0a8502c1ff06
--
2.41.0