WARNING: line length of 129 exceeds 80 columns
#79: FILE: drivers/net/tun.c:411:
+	    tun16_to_cpu(flags, hdr->csum_start) + tun16_to_cpu(flags, hdr->csum_offset) + 2 > tun16_to_cpu(flags, hdr->hdr_len))

WARNING: line length of 133 exceeds 80 columns
#80: FILE: drivers/net/tun.c:412:
+		hdr->hdr_len = cpu_to_tun16(flags, tun16_to_cpu(flags, hdr->csum_start) + tun16_to_cpu(flags, hdr->csum_offset) + 2);

WARNING: line length of 87 exceeds 80 columns
#124: FILE: drivers/net/tun.c:456:
+				   sinfo->gso_type, tun16_to_cpu(flags, hdr->gso_size),

WARNING: line length of 89 exceeds 80 columns
#129: FILE: drivers/net/tun.c:461:
+				       min(tun16_to_cpu(flags, hdr->hdr_len), 64), true);

total: 0 errors, 4 warnings, 0 checks, 297 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 324584e4836d ("tun: Decouple vnet 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, 297 lines checked