Commit 3a9a9a61 authored by Rahul Rameshbabu's avatar Rahul Rameshbabu Committed by David S. Miller
Browse files

testptp: Add support for testing ptp_clock_info .adjphase callback 



Invoke clock_adjtime syscall with tx.modes set with ADJ_OFFSET when testptp
is invoked with a phase adjustment offset value. Support seconds and
nanoseconds for the offset value.

Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: default avatarRahul Rameshbabu <rrameshbabu@nvidia.com>
Acked-by: default avatarRichard Cochran <richardcochran@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 048f6d99

tools/testing/selftests/ptp/testptp.c

+18 −1
Original line number Diff line number Diff line
@@ -134,6 +134,7 @@ static void usage(char *progname) 
		"            1 - external time stamp\n"

		"            2 - periodic output\n"

		" -n val     shift the ptp clock time by 'val' nanoseconds\n"

		" -o val     phase offset (in nanoseconds) to be provided to the PHC servo\n"

		" -p val     enable output with a period of 'val' nanoseconds\n"

		" -H val     set output phase to 'val' nanoseconds (requires -p)\n"

		" -w val     set output pulse width to 'val' nanoseconds (requires -p)\n"
@@ -167,6 +168,7 @@ int main(int argc, char *argv[]) 
	int adjfreq = 0x7fffffff;

	int adjtime = 0;

	int adjns = 0;

	int adjphase = 0;

	int capabilities = 0;

	int extts = 0;

	int flagtest = 0;
@@ -188,7 +190,7 @@ 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:p:P:sSt:T:w:z"))) {

	while (EOF != (c = getopt(argc, argv, "cd:e:f:ghH:i:k:lL:n:o:p:P:sSt:T:w:z"))) {

		switch (c) {

		case 'c':

			capabilities = 1;
@@ -228,6 +230,9 @@ int main(int argc, char *argv[]) 
		case 'n':

			adjns = atoi(optarg);

			break;

		case 'o':

			adjphase = atoi(optarg);

			break;

		case 'p':

			perout = atoll(optarg);

			break;
@@ -327,6 +332,18 @@ int main(int argc, char *argv[]) 
		}

	}



	if (adjphase) {

		memset(&tx, 0, sizeof(tx));

		tx.modes = ADJ_OFFSET | ADJ_NANO;

		tx.offset = adjphase;



		if (clock_adjtime(clkid, &tx) < 0) {

			perror("clock_adjtime");

		} else {

			puts("phase adjustment okay");

		}

	}



	if (gettime) {

		if (clock_gettime(clkid, &ts)) {

			perror("clock_gettime");