WARNING: line length of 82 exceeds 80 columns
#31: FILE: include/net/netfilter/nf_flow_table.h:322:
+    (IS_MODULE(CONFIG_NF_FLOW_TABLE) && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES))

WARNING: please, no spaces at the start of a line
#31: FILE: include/net/netfilter/nf_flow_table.h:322:
+    (IS_MODULE(CONFIG_NF_FLOW_TABLE) && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES))$

CHECK: extern prototypes should be avoided in .h files
#32: FILE: include/net/netfilter/nf_flow_table.h:323:
+extern int nf_flow_register_bpf(void);

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#60: 
new file mode 100644

total: 0 errors, 3 warnings, 1 checks, 152 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 38801aebe270 ("netfilter: add bpf_xdp_flow_lookup kfunc") 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, 3 warnings, 1 checks, 152 lines checked