WARNING: const array should probably be static const
#32: FILE: tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c:21:
+const char cubic_cc[] = "bpf_cubic";

WARNING: const array should probably be static const
#69: FILE: tools/testing/selftests/bpf/progs/connect4_prog.c:37:
+const char reno[] = "reno";

WARNING: const array should probably be static const
#70: FILE: tools/testing/selftests/bpf/progs/connect4_prog.c:38:
+const char cubic[] = "cubic";

WARNING: line length of 85 exceeds 80 columns
#106: FILE: tools/testing/selftests/bpf/progs/connect4_prog.c:71:
+	if (bpf_setsockopt(ctx, SOL_TCP, TCP_CONGESTION, (void *)reno, sizeof(reno)))

WARNING: line length of 87 exceeds 80 columns
#112: FILE: tools/testing/selftests/bpf/progs/connect4_prog.c:76:
+	if (bpf_setsockopt(ctx, SOL_TCP, TCP_CONGESTION, (void *)cubic, sizeof(cubic)))

total: 0 errors, 5 warnings, 0 checks, 81 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 20bb9c9a05ee ("selftests/bpf: replace TCP CC string comparisons with bpf_strncmp") 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, 5 warnings, 0 checks, 81 lines checked