CHECK: Prefer using the BIT macro
#29: FILE: tools/include/uapi/linux/if_xdp.h:46:
+#define XDP_UMEM_TX_METADATA_LEN	(1 << 2)

total: 0 errors, 0 warnings, 1 checks, 19 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 aa6f5bc100a4 ("selftests/bpf: Add XDP_UMEM_TX_METADATA_LEN to XSK TX metadata 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, 0 warnings, 1 checks, 19 lines checked