CHECK: Comparison to NULL could be written "!udph"
#364: FILE: tools/testing/selftests/net/lib/xdp_native.bpf.c:242:
+	if (udph == NULL || udph + 1 > (struct udphdr *)data_end)

CHECK: Comparison to NULL could be written "!udph"
#384: FILE: tools/testing/selftests/net/lib/xdp_native.bpf.c:262:
+	if (udph == NULL)

total: 0 errors, 0 warnings, 2 checks, 397 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 8d59ac243d5d ("selftests: drv-net: Test tail-adjustment support") 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, 2 checks, 397 lines checked