WARNING: line length of 96 exceeds 80 columns
#87: FILE: include/linux/skbuff.h:4874:
+void *skb_ext_from_headroom(struct sk_buff *skb, enum skb_ext_id id, int head_offset, int size);

WARNING: line length of 83 exceeds 80 columns
#114: FILE: net/core/skbuff.c:2255:
+	if (skb_has_extensions(skb) && skb->extensions->mode == SKB_EXT_HEADROOM) {

WARNING: line length of 85 exceeds 80 columns
#116: FILE: net/core/skbuff.c:2257:
+		memcpy(data, skb->extensions, __skb_ext_total_size(skb->extensions));

WARNING: line length of 87 exceeds 80 columns
#134: FILE: net/core/skbuff.c:5026:
+#define SKB_EXT_CHUNKS(x)	(ALIGN((x), SKB_EXT_ALIGN_VALUE) / SKB_EXT_ALIGN_VALUE)

WARNING: line length of 90 exceeds 80 columns
#159: FILE: net/core/skbuff.c:5067:
+					     SKB_EXT_CHUNKS_BYTES(skb_ext_alloc_length()),

WARNING: line length of 95 exceeds 80 columns
#194: FILE: net/core/skbuff.c:7034:
+static void *__skb_ext_set_active(struct sk_buff *skb, struct skb_ext *ext, enum skb_ext_id id)

WARNING: line length of 95 exceeds 80 columns
#261: FILE: net/core/skbuff.c:7121:
+void *skb_ext_from_headroom(struct sk_buff *skb, enum skb_ext_id id, int head_offset, int size)

total: 0 errors, 7 warnings, 0 checks, 257 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 fff156bd450e ("skb: Extension header in packet headroom") 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, 7 warnings, 0 checks, 257 lines checked