WARNING: line length of 98 exceeds 80 columns
#96: FILE: tools/testing/selftests/net/lib/gro.c:97:
+#define TOTAL_HDR_LEN (ETH_HLEN + PPPOE_SES_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr))

WARNING: line length of 96 exceeds 80 columns
#101: FILE: tools/testing/selftests/net/lib/gro.c:101:
+#define MAX_HDR_LEN (ETH_HLEN + PPPOE_SES_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr))

WARNING: line length of 95 exceeds 80 columns
#132: FILE: tools/testing/selftests/net/lib/gro.c:169:
+		ppp_payload_len = sizeof(struct ipv6hdr) + sizeof(struct tcphdr) + payload_len;

WARNING: line length of 93 exceeds 80 columns
#135: FILE: tools/testing/selftests/net/lib/gro.c:172:
+		ppp_payload_len = sizeof(struct iphdr) + sizeof(struct tcphdr) + payload_len;

WARNING: line length of 81 exceeds 80 columns
#194: FILE: tools/testing/selftests/net/lib/gro.c:780:
+	iph = (struct iphdr *)(optpkt + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 99 exceeds 80 columns
#203: FILE: tools/testing/selftests/net/lib/gro.c:790:
+	struct ipv6hdr *iph = (struct ipv6hdr *)(optpkt + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 92 exceeds 80 columns
#212: FILE: tools/testing/selftests/net/lib/gro.c:943:
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 92 exceeds 80 columns
#231: FILE: tools/testing/selftests/net/lib/gro.c:970:
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 92 exceeds 80 columns
#241: FILE: tools/testing/selftests/net/lib/gro.c:987:
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 97 exceeds 80 columns
#242: FILE: tools/testing/selftests/net/lib/gro.c:988:
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: Missing a blank line after declarations
#252: FILE: tools/testing/selftests/net/lib/gro.c:1017:
+		int ecn_off = ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0) + 1;
+		buf[ecn_off] ^= 0x2; // ECN set to 10

WARNING: line length of 97 exceeds 80 columns
#261: FILE: tools/testing/selftests/net/lib/gro.c:1032:
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN + (pppoe ? PPPOE_SES_HLEN : 0));

WARNING: line length of 86 exceeds 80 columns
#335: FILE: tools/testing/selftests/net/lib/gro.c:1760:
+			tcp_offset = ETH_HLEN + PPPOE_SES_HLEN + sizeof(struct iphdr);

WARNING: line length of 88 exceeds 80 columns
#337: FILE: tools/testing/selftests/net/lib/gro.c:1762:
+			tcp_offset = ETH_HLEN + PPPOE_SES_HLEN + sizeof(struct ipv6hdr);

total: 0 errors, 14 warnings, 0 checks, 291 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 bd71d94ed502 ("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, 14 warnings, 0 checks, 291 lines checked