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Message-Id: <20220923210016.3406301-6-vladimir.oltean@nxp.com> Date: Sat, 24 Sep 2022 00:00:16 +0300 From: Vladimir Oltean <vladimir.oltean@....com> To: netdev@...r.kernel.org Cc: Vinicius Costa Gomes <vinicius.gomes@...el.com>, Kurt Kanzenbach <kurt@...utronix.de>, Alexandre Belloni <alexandre.belloni@...tlin.com>, Xiaoliang Yang <xiaoliang.yang_1@....com>, UNGLinuxDriver@...rochip.com, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org Subject: [PATCH net-next 4/4] selftests: net: tsn_lib: run phc2sys in automatic mode We can make the phc2sys helper not only synchronize a PHC to CLOCK_REALTIME, which is what it currently does, but also CLOCK_REALTIME to a PHC, which is going to be needed in distributed TSN tests. Instead of making the complexity of the arguments passed to phc2sys_start() explode, we can let it figure out the sync direction automatically, based on ptp4l's port states. Towards that goal, pass just the path to the desired ptp4l instance's UNIX domain socket, and remove the $if_name argument (from which it derives the PHC). Also adapt the one caller from the ocelot psfp.sh test. In the case of psfp.sh, phc2sys_start is able to properly figure out that CLOCK_REALTIME is the source clock and swp1's PHC is the destination, because of the way in which ptp4l_start for the UDS_ADDRESS_SWP1 was called: with slave_only=false, so it will always win the BMCA and always become the sync master between itself and $h1. Signed-off-by: Vladimir Oltean <vladimir.oltean@....com> --- tools/testing/selftests/drivers/net/ocelot/psfp.sh | 2 +- tools/testing/selftests/net/forwarding/tsn_lib.sh | 7 ++----- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/drivers/net/ocelot/psfp.sh b/tools/testing/selftests/drivers/net/ocelot/psfp.sh index 5a5cee92c665..bed748dde4b0 100755 --- a/tools/testing/selftests/drivers/net/ocelot/psfp.sh +++ b/tools/testing/selftests/drivers/net/ocelot/psfp.sh @@ -181,7 +181,7 @@ setup_prepare() # Set up swp1 as a master PHC for h1, synchronized to the local # CLOCK_REALTIME. - phc2sys_start ${swp1} ${UDS_ADDRESS_SWP1} + phc2sys_start ${UDS_ADDRESS_SWP1} # Assumption true for LS1028A: h1 and h2 use the same PHC. So by # synchronizing h1 to swp1 via PTP, h2 is also implicitly synchronized diff --git a/tools/testing/selftests/net/forwarding/tsn_lib.sh b/tools/testing/selftests/net/forwarding/tsn_lib.sh index 20c2b411ba36..b91bcd8008a9 100644 --- a/tools/testing/selftests/net/forwarding/tsn_lib.sh +++ b/tools/testing/selftests/net/forwarding/tsn_lib.sh @@ -22,8 +22,7 @@ fi phc2sys_start() { - local if_name=$1 - local uds_address=$2 + local uds_address=$1 local extra_args="" if ! [ -z "${uds_address}" ]; then @@ -33,9 +32,7 @@ phc2sys_start() phc2sys_log="$(mktemp)" chrt -f 10 phc2sys -m \ - -c ${if_name} \ - -s CLOCK_REALTIME \ - -O ${UTC_TAI_OFFSET} \ + -a -rr \ --step_threshold 0.00002 \ --first_step_threshold 0.00002 \ ${extra_args} \ -- 2.34.1
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