WARNING: line length of 81 exceeds 80 columns
#130: FILE: tools/testing/selftests/net/arp_no_bcastnull_poision.sh:72:
+		echo "ERROR: unable to ARP poision with a valid MAC ${VALID_MAC}"

WARNING: Prefer __packed over __attribute__((packed))
#239: FILE: tools/testing/selftests/net/arp_send.c:16:
+#define __packed __attribute__((packed))

WARNING: line length of 140 exceeds 80 columns
#262: FILE: tools/testing/selftests/net/arp_send.c:39:
+		fprintf(stderr, "Usage: %s <iface> <mac_dst> <mac_src> <op_code> <target-ip> <target-hwaddr> <sender-ip> <sender-hwaddr>\n",

WARNING: line length of 89 exceeds 80 columns
#338: FILE: tools/testing/selftests/net/arp_send.c:115:
+		fprintf(stderr, "Unable to open raw socket(%d). Need root privileges?\n",

WARNING: line length of 87 exceeds 80 columns
#349: FILE: tools/testing/selftests/net/arp_send.c:126:
+		fprintf(stderr, "Unable to bind raw socket(%d). Invalid iface '%d'?\n",

total: 0 errors, 5 warnings, 0 checks, 316 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 86fad1a6e334 ("selftests/net: add no ARP bcast/null poison test") 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, 5 warnings, 0 checks, 316 lines checked