WARNING: line length of 84 exceeds 80 columns
#85: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:30:
+	SYS(fail, "ip -net %s addr add %s/24 dev %s", NS_TEST, DUMMY_IP, DUMMY_DEV);

WARNING: line length of 84 exceeds 80 columns
#93: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:38:
+	snprintf(skel->bss->dev_name, sizeof(skel->bss->dev_name), "%s", DUMMY_DEV);

WARNING: line length of 93 exceeds 80 columns
#117: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:62:
+	skel->links.netpoll_dummy_xmit = bpf_program__attach(skel->progs.netpoll_dummy_xmit);

WARNING: line length of 88 exceeds 80 columns
#118: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:63:
+	if (!ASSERT_OK_PTR(skel->links.netpoll_dummy_xmit, "attach netpoll_dummy_xmit"))

WARNING: line length of 91 exceeds 80 columns
#122: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:67:
+	skel->links.netpoll_send_test = bpf_program__attach(skel->progs.netpoll_send_test);

WARNING: line length of 86 exceeds 80 columns
#123: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:68:
+	if (!ASSERT_OK_PTR(skel->links.netpoll_send_test, "attach netpoll_send_test"))

WARNING: line length of 91 exceeds 80 columns
#140: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:85:
+	ASSERT_STREQ(skel->bss->driver_xmit, skel->data->send_data, "dummy_xmit received");

WARNING: line length of 85 exceeds 80 columns
#326: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:103:
+	if (bpf_probe_read_kernel(&ip, sizeof(ip), data + sizeof(struct ethhdr)) < 0)

WARNING: line length of 102 exceeds 80 columns
#331: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:108:
+	if (bpf_probe_read_kernel(&udp, sizeof(udp), data + sizeof(struct ethhdr) + (ip.ihl * 4)) < 0)

WARNING: line length of 142 exceeds 80 columns
#335: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:112:
+	if (bpf_probe_read_kernel(&driver_xmit, sizeof(driver_xmit), data + sizeof(struct ethhdr) + (ip.ihl * 4) + sizeof(struct udphdr)) < 0)

total: 0 errors, 10 warnings, 0 checks, 281 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit de30b8fd38c6 ("selftests/bpf: Add netpoll kfunc sanity test") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 10 warnings, 0 checks, 281 lines checked