WARNING: Unknown commit id 'cbe405666c9c8698ac1e72f5e8ffc551216dfa56', maybe rebased or not pulled?
#15: 
The packetdrill used is commit cbe405666c9c8698ac1e72f5e8ffc551216dfa56

total: 0 errors, 1 warnings, 0 checks, 1363 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 30c61a19fa03 ("selftests/net: packetdrill: add TCP Accurate ECN cases") 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, 1 warnings, 0 checks, 1363 lines checked