netdev - [RESEND PATCH bpf-next v3 0/2] bpf, xdp: Add tracepoint to xdp attaching failure

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Date: Thu, 20 Jul 2023 23:52:26 +0800
From: Leon Hwang <hffilwlqm@...il.com>
To: ast@...nel.org
Cc: daniel@...earbox.net,
	john.fastabend@...il.com,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	song@...nel.org,
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	hffilwlqm@...il.com,
	tangyeechou@...il.com,
	kernel-patches-bot@...com,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [RESEND PATCH bpf-next v3 0/2] bpf, xdp: Add tracepoint to xdp attaching failure

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.

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     | 63 +++++++++++++++++++
 .../bpf/progs/test_xdp_attach_fail.c          | 51 +++++++++++++++
 4 files changed, 135 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_attach_fail.c


base-commit: 0858a95ec7491a7a5bfca4be9736dba4ee38c461
-- 
2.41.0