WARNING: line length of 88 exceeds 80 columns
#28: FILE: tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c:63:
+	fprintf(stderr, "%s{flags:0x%x, max_delack_ms:%u, rand:0x%x}, max_rto_sec:%u\n",

CHECK: Prefer using the BIT macro
#181: FILE: tools/testing/selftests/bpf/test_tcp_hdr_options.h:25:
+#define OPTION_F_MAX_RTO_SEC	(1 << OPTION_MAX_RTO_SEC)

total: 0 errors, 1 warnings, 1 checks, 145 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 b92fa5feab24 ("selftests/bpf: add rto max for bpf_setsockopt test") 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, 1 warnings, 1 checks, 145 lines checked