WARNING: line length of 90 exceeds 80 columns
#120: FILE: tools/testing/selftests/net/lib/gro.c:435:
+			fill_pppoelayer(buf + ETH_HLEN, payload_len + ip_hdr_len, 0x1234);

WARNING: line length of 81 exceeds 80 columns
#128: FILE: tools/testing/selftests/net/lib/gro.c:441:
+					  payload_len + ip_hdr_len, encap_proto);

WARNING: line length of 92 exceeds 80 columns
#249: FILE: tools/testing/selftests/net/lib/gro.c:1801:
+	while ((c = getopt_long(argc, argv, "46d:D:eEi:n:pPrs:S:t:ov", opts, NULL)) != -1) {

WARNING: line length of 91 exceeds 80 columns
#276: FILE: tools/testing/selftests/net/lib/gro.c:1880:
+			(proto == PF_INET ? sizeof(struct iphdr) : sizeof(struct ipv6hdr));

total: 0 errors, 4 warnings, 0 checks, 230 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 c1318df04d95 ("selftests: net: test PPPoE packets in gro.sh") 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, 4 warnings, 0 checks, 230 lines checked