Hello dear list!
I've met with ptp4l timesync issue. Master send SYNC packets without
timestamp and slave doesn't handle this case when twoStepFlag set to 1. The
IEEE 1588 standard says that SYNC messages in 2-step ptp don't need
timestamp. It enough to have timestamp in FOLLOW_UP messages. Such linuxptp
behavior doesn't seem to conform to the standard. Switching to 1-step ptp
is not possible because NIC driver returns "out of range" ioctl result when
ptp4l tries to set RX filters up.
Do you know are there misconfigurations or software issues?
*Note:*
Two NICs are connected directly.
*Master cmd line: * ./ptp4l -i enp2s0f0 -m2EH -f ./default.cfg
*Slave cmd line:*
./ptp4l -i enp2s0f0 -m2sEH -f ./default.cfg
*Master default.cfg:*
[global]
#
# Default Data Set
#
twoStepFlag 1
clientOnly 0
socket_priority 0
priority1 128
priority2 128
domainNumber 0
#utc_offset 37
clockClass 248
clockAccuracy 0xFE
offsetScaledLogVariance 0xFFFF
free_running 0
freq_est_interval 1
dscp_event 0
dscp_general 0
dataset_comparison ieee1588
G.8275.defaultDS.localPriority 128
maxStepsRemoved 255
#
# Port Data Set
#
logAnnounceInterval 1
logSyncInterval 0
operLogSyncInterval 0
logMinDelayReqInterval 0
logMinPdelayReqInterval 0
operLogPdelayReqInterval 0
announceReceiptTimeout 3
syncReceiptTimeout 0
delayAsymmetry 0
fault_reset_interval 4
neighborPropDelayThresh 20000000
serverOnly 0
G.8275.portDS.localPriority 128
asCapable auto
BMCA ptp
inhibit_announce 0
inhibit_delay_req 0
ignore_source_id 0
#
# Run time options
#
assume_two_step 0
logging_level 6
path_trace_enabled 0
follow_up_info 0
hybrid_e2e 0
inhibit_multicast_service 0
net_sync_monitor 0
tc_spanning_tree 0
tx_timestamp_timeout 1
unicast_listen 0
unicast_master_table 0
unicast_req_duration 3600
use_syslog 1
verbose 0
summary_interval 0
kernel_leap 1
check_fup_sync 0
clock_class_threshold 248
#
# Servo Options
#
pi_proportional_const 0.0
pi_integral_const 0.0
pi_proportional_scale 0.0
pi_proportional_exponent -0.3
pi_proportional_norm_max 0.7
pi_integral_scale 0.0
pi_integral_exponent 0.4
pi_integral_norm_max 0.3
step_threshold 0.0
first_step_threshold 0.00002
max_frequency 900000000
clock_servo pi
sanity_freq_limit 200000000
ntpshm_segment 0
msg_interval_request 0
servo_num_offset_values 10
servo_offset_threshold 0
write_phase_mode 0
#
# Transport options
#
transportSpecific 0x0
ptp_dst_mac 01:1B:19:00:00:00
p2p_dst_mac 01:80:C2:00:00:0E
udp_ttl 1
udp6_scope 0x0E
uds_address /var/run/ptp4l
uds_ro_address /var/run/ptp4lro
#
# Default interface options
#
clock_type OC
network_transport UDPv4
delay_mechanism E2E
time_stamping hardware
tsproc_mode filter
delay_filter moving_median
delay_filter_length 10
egressLatency 0
ingressLatency 0
boundary_clock_jbod 0
#
# Clock description
#
productDescription ;;
revisionData ;;
manufacturerIdentity 00:00:00
userDescription ;
timeSource 0xA0
*Slave default.cfg:*
[global]
#
# Default Data Set
#
twoStepFlag 1
clientOnly 0
socket_priority 0
priority1 128
priority2 128
domainNumber 0
#utc_offset 37
clockClass 248
clockAccuracy 0xFE
offsetScaledLogVariance 0xFFFF
free_running 0
freq_est_interval 1
dscp_event 0
dscp_general 0
dataset_comparison ieee1588
G.8275.defaultDS.localPriority 128
maxStepsRemoved 255
#
# Port Data Set
#
logAnnounceInterval 1
logSyncInterval 0
operLogSyncInterval 0
logMinDelayReqInterval 0
logMinPdelayReqInterval 0
operLogPdelayReqInterval 0
announceReceiptTimeout 3
syncReceiptTimeout 0
delayAsymmetry 0
fault_reset_interval 4
neighborPropDelayThresh 20000000
serverOnly 0
G.8275.portDS.localPriority 128
asCapable auto
BMCA ptp
inhibit_announce 0
inhibit_delay_req 0
ignore_source_id 0
#
# Run time options
#
assume_two_step 0
logging_level 6
path_trace_enabled 0
follow_up_info 0
hybrid_e2e 0
inhibit_multicast_service 0
net_sync_monitor 0
tc_spanning_tree 0
tx_timestamp_timeout 1
unicast_listen 0
unicast_master_table 0
unicast_req_duration 3600
use_syslog 1
verbose 0
summary_interval 0
kernel_leap 1
check_fup_sync 0
clock_class_threshold 248
#
# Servo Options
#
pi_proportional_const 0.0
pi_integral_const 0.0
pi_proportional_scale 0.0
pi_proportional_exponent -0.3
pi_proportional_norm_max 0.7
pi_integral_scale 0.0
pi_integral_exponent 0.4
pi_integral_norm_max 0.3
step_threshold 0.0
first_step_threshold 0.00002
max_frequency 900000000
clock_servo pi
sanity_freq_limit 200000000
ntpshm_segment 0
msg_interval_request 0
servo_num_offset_values 10
servo_offset_threshold 0
write_phase_mode 0
#
# Transport options
#
transportSpecific 0x0
ptp_dst_mac 01:1B:19:00:00:00
p2p_dst_mac 01:80:C2:00:00:0E
udp_ttl 1
udp6_scope 0x0E
uds_address /var/run/ptp4l
uds_ro_address /var/run/ptp4lro
#
# Default interface options
#
clock_type OC
network_transport UDPv4
delay_mechanism E2E
time_stamping hardware
tsproc_mode filter
delay_filter moving_median
delay_filter_length 10
egressLatency 0
ingressLatency 0
boundary_clock_jbod 0
#
# Clock description
#
productDescription ;;
revisionData ;;
manufacturerIdentity 00:00:00
userDescription ;
timeSource 0xA0
*NIC* *configuration*:
*Master:*
*# ip link show dev enp2s0f0*
6: enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
mode DEFAULT group default qlen 1000
link/ether b4:96:91:a6:33:30 brd ff:ff:ff:ff:ff:ff
*Slave:*
*# ip link show dev enp2s0f0*
4: enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
mode DEFAULT group default qlen 1000
link/ether b4:96:91:a6:33:c0 brd ff:ff:ff:ff:ff:ff
02:00.0 Ethernet controller: Intel Corporation Ethernet Controller XXV710
for 25GbE SFP28 (rev 02)
Subsystem: Intel Corporation Ethernet Controller XXV710 for 25GbE
SFP28
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f3000000 (64-bit, prefetchable) [size=16M]
Memory at f5000000 (64-bit, prefetchable) [size=32K]
Expansion ROM at f7c80000 [disabled] [size=512K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] MSI-X: Enable+ Count=129 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 30-33-a6-ff-ff-91-96-b4
Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
Capabilities: [160] Single Root I/O Virtualization (SR-IOV)
Capabilities: [1a0] Transaction Processing Hints
Capabilities: [1b0] Access Control Services
Capabilities: [1d0] #19
Kernel driver in use: i40e
Kernel modules: i40e
*Software versions*:
*# ethtool -i enp2s0f0
*
driver: i40e
version: 2.15.9
firmware-version: 8.30 0x8000a483 1.2926.0
expansion-rom-version:
bus-info: 0000:02:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
*# ethtool -T enp2s0f0*
Time stamping parameters for enp2s0f0:
Capabilities:
hardware-transmit (SOF_TIMESTAMPING_TX_HARDWARE)
software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE)
hardware-receive (SOF_TIMESTAMPING_RX_HARDWARE)
software-receive (SOF_TIMESTAMPING_RX_SOFTWARE)
software-system-clock (SOF_TIMESTAMPING_SOFTWARE)
hardware-raw-clock (SOF_TIMESTAMPING_RAW_HARDWARE)
PTP Hardware Clock: 2
Hardware Transmit Timestamp Modes:
off (HWTSTAMP_TX_OFF)
on (HWTSTAMP_TX_ON)
Hardware Receive Filter Modes:
none (HWTSTAMP_FILTER_NONE)
ptpv1-l4-sync (HWTSTAMP_FILTER_PTP_V1_L4_SYNC)
ptpv1-l4-delay-req (HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ)
ptpv2-l4-event (HWTSTAMP_FILTER_PTP_V2_L4_EVENT)
ptpv2-l4-sync (HWTSTAMP_FILTER_PTP_V2_L4_SYNC)
ptpv2-l4-delay-req (HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ)
ptpv2-l2-event (HWTSTAMP_FILTER_PTP_V2_L2_EVENT)
ptpv2-l2-sync (HWTSTAMP_FILTER_PTP_V2_L2_SYNC)
ptpv2-l2-delay-req (HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ)
ptpv2-event (HWTSTAMP_FILTER_PTP_V2_EVENT)
ptpv2-sync (HWTSTAMP_FILTER_PTP_V2_SYNC)
ptpv2-delay-req (HWTSTAMP_FILTER_PTP_V2_DELAY_REQ)
*linuxptp commit id*: f3290eee8567f957b8c61c2d39ee618bc7ccffb1
*linux kernel version: *4.15.0-142-generic
*linux kernel PTP config: *
* # grep "CONFIG_PTP" /boot/config-4.15.0-142-generic *
CONFIG_PTP_1588_CLOCK=m
CONFIG_PTP_1588_CLOCK_KVM=m
*loaded kernel modules: # lsmod | grep ptp* ptp
20480 2 i40e,igb
pps_core 20480 1 ptp
*linux distrib version:*
* # cat /etc/lsb-release *
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
Regards,
Kandybka Dmitry
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