WARNING: line length of 82 exceeds 80 columns
#65: FILE: net/xfrm/xfrm_iptfs.c:220:
+		XFRM_INC_STATS(dev_net(st->root_skb->dev), LINUX_MIB_XFRMINERROR);

WARNING: line length of 85 exceeds 80 columns
#172: FILE: net/xfrm/xfrm_iptfs.c:327:
+			iplen = be16_to_cpu(((struct ipv6hdr *)hbytes)->payload_len);

WARNING: else is not generally useful after a break or return
#181: FILE: net/xfrm/xfrm_iptfs.c:336:
+			break;
+		} else {

WARNING: line length of 81 exceeds 80 columns
#214: FILE: net/xfrm/xfrm_iptfs.c:369:
+			memcpy(skb_mac_header(skb), old_mac, first_skb->mac_len);

total: 0 errors, 4 warnings, 0 checks, 294 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 b0959b3e96aa ("xfrm: iptfs: add basic receive packet (tunnel egress) handling") 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, 4 warnings, 0 checks, 294 lines checked