linux-kernel - [PATCH net-next v2 2/2] selftests/ptp: Add -X option for testing PTP_SYS_OFFSET

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Message-ID: <1faf03acc71617969de157770642978a3a1d7f44.1690321709.git.alex.maftei@amd.com>
Date:   Tue, 25 Jul 2023 22:53:34 +0100
From:   Alex Maftei <alex.maftei@....com>
To:     <richardcochran@...il.com>, <shuah@...nel.org>,
        <rrameshbabu@...dia.com>, <davem@...emloft.net>, <kuba@...nel.org>
CC:     Alex Maftei <alex.maftei@....com>,
        <linux-kselftest@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>
Subject: [PATCH net-next v2 2/2] selftests/ptp: Add -X option for testing PTP_SYS_OFFSET_PRECISE

The -X option was chosen because X looks like a cross, and the underlying
callback is 'get cross timestamp'.

Signed-off-by: Alex Maftei <alex.maftei@....com>
---
 tools/testing/selftests/ptp/testptp.c | 31 ++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
index 71ceb6444af4..c9f6cca4feb4 100644
--- a/tools/testing/selftests/ptp/testptp.c
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -144,6 +144,7 @@ static void usage(char *progname)
 		" -t val     shift the ptp clock time by 'val' seconds\n"
 		" -T val     set the ptp clock time to 'val' seconds\n"
 		" -x val     get an extended ptp clock time with the desired number of samples (up to %d)\n"
+		" -X         get a ptp clock cross timestamp\n"
 		" -z         test combinations of rising/falling external time stamp flags\n",
 		progname, PTP_MAX_SAMPLES);
 }
@@ -160,6 +161,7 @@ int main(int argc, char *argv[])
 	struct ptp_clock_time *pct;
 	struct ptp_sys_offset *sysoff;
 	struct ptp_sys_offset_extended *soe;
+	struct ptp_sys_offset_precise *xts;
 
 	char *progname;
 	unsigned int i;
@@ -179,6 +181,7 @@ int main(int argc, char *argv[])
 	int list_pins = 0;
 	int pct_offset = 0;
 	int getextended = 0;
+	int getcross = 0;
 	int n_samples = 0;
 	int pin_index = -1, pin_func;
 	int pps = -1;
@@ -193,7 +196,7 @@ int main(int argc, char *argv[])
 
 	progname = strrchr(argv[0], '/');
 	progname = progname ? 1+progname : argv[0];
-	while (EOF != (c = getopt(argc, argv, "cd:e:f:ghH:i:k:lL:n:o:p:P:sSt:T:w:x:z"))) {
+	while (EOF != (c = getopt(argc, argv, "cd:e:f:ghH:i:k:lL:n:o:p:P:sSt:T:w:x:Xz"))) {
 		switch (c) {
 		case 'c':
 			capabilities = 1;
@@ -267,6 +270,9 @@ int main(int argc, char *argv[])
 				return -1;
 			}
 			break;
+		case 'X':
+			getcross = 1;
+			break;
 		case 'z':
 			flagtest = 1;
 			break;
@@ -575,6 +581,29 @@ int main(int argc, char *argv[])
 		free(soe);
 	}
 
+	if (getcross) {
+		xts = calloc(1, sizeof(*xts));
+		if (!xts) {
+			perror("calloc");
+			return -1;
+		}
+
+		if (ioctl(fd, PTP_SYS_OFFSET_PRECISE, xts)) {
+			perror("PTP_SYS_OFFSET_PRECISE");
+		} else {
+			puts("system and phc crosstimestamping request okay");
+
+			printf("device time: %lld.%09u\n",
+			       xts->device.sec, xts->device.nsec);
+			printf("system time: %lld.%09u\n",
+			       xts->sys_realtime.sec, xts->sys_realtime.nsec);
+			printf("monoraw time: %lld.%09u\n",
+			       xts->sys_monoraw.sec, xts->sys_monoraw.nsec);
+		}
+
+		free(xts);
+	}
+
 	close(fd);
 	return 0;
 }
-- 
2.25.1