WARNING: Unknown commit id 'fe4c7293ea640a4c81178b6c88744d7a5d209fd6', maybe rebased or not pulled?
#15: 
The packetdrill used is commit fe4c7293ea640a4c81178b6c88744d7a5d209fd6

total: 0 errors, 1 warnings, 0 checks, 1366 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 a644288938c9 ("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, 1366 lines checked