CHECK: Macro argument 'port' may be better as '(port)' to avoid precedence issues
#45: FILE: net/ipv4/inet_hashtables.c:986:
+#define INET_PORT_SYMMETRY_MATCH(sk, port) (port == \
+					    ntohs(inet_sk(sk)->inet_dport))

total: 0 errors, 0 warnings, 1 checks, 64 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 e88ea409f4d9 ("tcp: do not allow to connect with the four-tuple symmetry socket") 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, 0 warnings, 1 checks, 64 lines checked