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Commit fec2e55bdef ("selftests: drv-net: Pull data before parsing headers")
added __ksym external symbol to xdp_native.bpf.c which now requires
a kernel with BTF. Enable BTF for driver selftests.
Before:
# TAP version 13
# 1..10
# # Exception| Traceback (most recent call last):
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 244, in ksft_run
# # Exception| case(*args)
# # Exception| ~~~~^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 231, in test_xdp_native_pass_sb
# # Exception| _test_pass(cfg, bpf_info, 256)
# # Exception| ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 209, in _test_pass
# # Exception| prog_info = _load_xdp_prog(cfg, bpf_info)
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 114, in _load_xdp_prog
# # Exception| cmd(
# # Exception| ~~~^
# # Exception| f"ip link set dev {cfg.ifname} mtu {bpf_info.mtu} xdpdrv obj {abs_path} sec {bpf_info.xdp_sec}",
# # Exception| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# # Exception| shell=True
# # Exception| ^^^^^^^^^^
# # Exception| )
# # Exception| ^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 75, in __init__
# # Exception| self.process(terminate=False, fail=fail, timeout=timeout)
# # Exception| ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 95, in process
# # Exception| raise CmdExitFailure("Command failed: %s\nSTDOUT: %s\nSTDERR: %s" %
# # Exception| (self.proc.args, stdout, stderr), self)
# # Exception| net.lib.py.utils.CmdExitFailure: Command failed: ip link set dev eni30773np1 mtu 1500 xdpdrv obj /home/sdf/src/linux/tools/testing/selftests/net/lib/xdp_native.bpf.o sec xdp
# # Exception| STDOUT: b''
# # Exception| STDERR: b"libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DEBUG_INFO_BTF enabled?\nlibbpf: failed to find '.BTF' ELF section in /lib/modules/6.17.0-rc6-virtme/build/vmlinux\nlibbpf: failed to find valid kernel BTF\nlib
bpf: Error loading vmlinux BTF: -3\nlibbpf: failed to load object '/home/sdf/src/linux/tools/testing/selftests/net/lib/xdp_native.bpf.o'\n"
# not ok 1 xdp.test_xdp_native_pass_sb
...
After:
# TAP version 13
# 1..10
# ok 1 xdp.test_xdp_native_pass_sb
# ok 2 xdp.test_xdp_native_pass_mb
# ok 3 xdp.test_xdp_native_drop_sb
# ok 4 xdp.test_xdp_native_drop_mb
# ok 5 xdp.test_xdp_native_tx_sb
# ok 6 xdp.test_xdp_native_tx_mb
# # Ignoring SIGTERM (cnt: 2), already exiting...
# # Ignoring SIGTERM (cnt: 3), already exiting...
# # Exception| Traceback (most recent call last):
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 244, in ksft_run
# # Exception| case(*args)
# # Exception| ~~~~^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 506, in test_xdp_native_adjst_taa
# # Exception| res = _test_xdp_native_tail_adjst(
# # Exception| cfg,
# # Exception| pkt_sz_lst,
# # Exception| offset_lst,
# # Exception| )
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 467, in _test_xdp_native_tail_adt
# # Exception| recvd_str = _exchg_udp(cfg, port, test_str)
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 72, in _exchg_udp
# # Exception| with bkg(rx_udp_cmd, exit_wait=True) as nc:
# # Exception| ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 137, in __exit__
# # Exception| return self.process(terminate=terminate, fail=self.check_fail)
# # Exception| ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 85, in process
# # Exception| stdout, stderr = self.proc.communicate(timeout)
# # Exception| ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
# # Exception| File "/usr/lib/python3.13/subprocess.py", line 1222, in communicate
# # Exception| stdout, stderr = self._communicate(input, endtime, timeout)
# # Exception| ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
# # Exception| File "/usr/lib/python3.13/subprocess.py", line 2128, in _communicate
# # Exception| ready = selector.select(timeout)
# # Exception| File "/usr/lib/python3.13/selectors.py", line 398, in select
# # Exception| fd_event_list = self._selector.poll(timeout)
# # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 208, in _ksft_intr
# # Exception| raise KsftTerminate()
# # Exception| net.lib.py.ksft.KsftTerminate
# # Stopping tests due to KsftTerminate.
# not ok 7 xdp.test_xdp_native_adjst_tail_grow_data
# # Totals: pass:6 fail:1 xfail:0 xpass:0 skip:0 error:0
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250924222518.1826863-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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