CHECK: Alignment should match open parenthesis
#25: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:78:
+	ASSERT_OK(system("ip link set dev " netkit_name " mtu 4000"),
+			 "set mtu");

WARNING: line length of 85 exceeds 80 columns
#26: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:79:
+	ASSERT_OK(system("ip link show dev " netkit_peer " | grep 4000 > /dev/null"),

CHECK: Alignment should match open parenthesis
#27: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:80:
+	ASSERT_OK(system("ip link show dev " netkit_peer " | grep 4000 > /dev/null"),
+			 "get mtu");

CHECK: Alignment should match open parenthesis
#29: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:82:
+	ASSERT_OK(system("ip link set dev " netkit_peer " mtu 1500"),
+			 "set mtu");

WARNING: line length of 85 exceeds 80 columns
#30: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:83:
+	ASSERT_OK(system("ip link show dev " netkit_peer " | grep 4000 > /dev/null"),

CHECK: Alignment should match open parenthesis
#31: FILE: tools/testing/selftests/bpf/prog_tests/tc_netkit.c:84:
+	ASSERT_OK(system("ip link show dev " netkit_peer " | grep 4000 > /dev/null"),
+			 "get mtu");

total: 0 errors, 2 warnings, 4 checks, 25 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 39cbaeaabb53 ("selftests/bpf: Add netkit tests for mac address and mtu") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 2 warnings, 4 checks, 25 lines checked