WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#37: 
new file mode 100644

WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#42: FILE: tools/testing/selftests/bpf/prog_tests/net_timestamping.c:1:
+#include <linux/net_tstamp.h>

ERROR: trailing statements should be on next line
#176: FILE: tools/testing/selftests/bpf/prog_tests/net_timestamping.c:135:
+	while (!socket_recv_errmsg(fd));

CHECK: No space is necessary after a cast
#238: FILE: tools/testing/selftests/bpf/prog_tests/net_timestamping.c:197:
+				 (char *) &sock_opt, sizeof(sock_opt));

WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#287: FILE: tools/testing/selftests/bpf/progs/net_timestamping.c:1:
+#include "vmlinux.h"

WARNING: line length of 92 exceeds 80 columns
#336: FILE: tools/testing/selftests/bpf/progs/net_timestamping.c:50:
+extern int bpf_sock_ops_enable_tx_tstamp(struct bpf_sock_ops_kern *skops, u64 flags) __ksym;

WARNING: line length of 82 exceeds 80 columns
#458: FILE: tools/testing/selftests/bpf/progs/net_timestamping.c:172:
+		prior_ts = val->snd_sw_delay + val->sched_delay + val->sendmsg_ns;

total: 1 errors, 5 warnings, 1 checks, 487 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 2425c85ec858 ("selftests/bpf: add simple bpf tests in the tx path for timestamping feature") 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.