WARNING: line length of 83 exceeds 80 columns
#56: FILE: include/net/gro.h:454:
+	if ((iph->ttl ^ iph2->ttl) | (iph->tos ^ iph2->tos) | (df ^ (id2 & IP_DF)))

WARNING: line length of 84 exceeds 80 columns
#68: FILE: include/net/gro.h:464:
+	return ipid_offset ^ (count * !(NAPI_GRO_CB(p)->ip_fixedid & (1 << inner)));

WARNING: line length of 101 exceeds 80 columns
#99: FILE: include/net/gro.h:496:
+	flush = __gro_receive_network_flush(th, th2, p, off - NAPI_GRO_CB(p)->network_offset, false);

WARNING: line length of 115 exceeds 80 columns
#101: FILE: include/net/gro.h:498:
+		flush |= __gro_receive_network_flush(th, th2, p, off - NAPI_GRO_CB(p)->inner_network_offset, true);

WARNING: line length of 83 exceeds 80 columns
#113: FILE: net/ipv4/tcp_offload.c:488:
+	bool is_fixedid = (NAPI_GRO_CB(skb)->ip_fixedid >> skb->encapsulation) & 1;

total: 0 errors, 5 warnings, 0 checks, 84 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 4c87605f4e8c ("net: gro: only merge packets with incrementing or fixed outer ids") 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, 5 warnings, 0 checks, 84 lines checked