Hi Richard, >-----Original Message----- >From: Richard Cochran [mailto:[email protected]] >Sent: Tuesday, December 09, 2014 9:55 PM >To: [email protected] >Subject: [Linuxptp-devel] [PATCH RFC V2 3/4] config: Introduce options for >correcting transmit and receive delays.
Note that egress and ingress timestamping delays change with link speed. So you might want to have a list of delays and apply the right one depending on link speed. Regards, Christian > >Signed-off-by: Richard Cochran <[email protected]> >--- > config.c | 12 ++++++++++++ > default.cfg | 2 ++ > ds.h | 2 ++ > gPTP.cfg | 2 ++ > ptp4l.8 | 12 ++++++++++++ > ptp4l.c | 2 ++ > 6 files changed, 32 insertions(+) > >diff --git a/config.c b/config.c >index d5fa378..7679f44 100644 >--- a/config.c >+++ b/config.c >@@ -132,6 +132,18 @@ static enum parser_result parse_pod_setting(const >char *option, > return r; > pod->min_neighbor_prop_delay = val; > >+ } else if (!strcmp(option, "egressLatency")) { >+ r = get_ranged_int(value, &val, INT_MIN, INT_MAX); >+ if (r != PARSED_OK) >+ return r; >+ pod->tx_timestamp_offset = val; >+ >+ } else if (!strcmp(option, "ingressLatency")) { >+ r = get_ranged_int(value, &val, INT_MIN, INT_MAX); >+ if (r != PARSED_OK) >+ return r; >+ pod->rx_timestamp_offset = val; >+ > } else if (!strcmp(option, "fault_badpeernet_interval")) { > pod->flt_interval_pertype[FT_BAD_PEER_NETWORK].type = >FTMO_LINEAR_SECONDS; > if (!strcasecmp("ASAP", value)) { >diff --git a/default.cfg b/default.cfg >index 9e794ba..0e20726 100644 >--- a/default.cfg >+++ b/default.cfg >@@ -70,6 +70,8 @@ delay_mechanism E2E > time_stamping hardware > delay_filter moving_median > delay_filter_length 10 >+egressLatency 0 >+ingressLatency 0 > # > # Clock description > # >diff --git a/ds.h b/ds.h >index ea25fbb..00260ed 100644 >--- a/ds.h >+++ b/ds.h >@@ -137,6 +137,8 @@ struct port_defaults { > struct fault_interval flt_interval_pertype[FT_CNT]; > UInteger32 neighborPropDelayThresh; /*nanoseconds*/ > int min_neighbor_prop_delay; /*nanoseconds*/ >+ int tx_timestamp_offset; /*nanoseconds*/ >+ int rx_timestamp_offset; /*nanoseconds*/ > }; > > #endif >diff --git a/gPTP.cfg b/gPTP.cfg >index e15a05a..689abd8 100644 >--- a/gPTP.cfg >+++ b/gPTP.cfg >@@ -69,3 +69,5 @@ delay_mechanism P2P > time_stamping hardware > delay_filter moving_median > delay_filter_length 10 >+egressLatency 0 >+ingressLatency 0 >diff --git a/ptp4l.8 b/ptp4l.8 >index 687beb6..bee42e9 100644 >--- a/ptp4l.8 >+++ b/ptp4l.8 >@@ -205,6 +205,18 @@ The default is moving_median. > .B delay_filter_length > The length of the delay filter in samples. > The default is 10. >+.TP >+.B egressLatency >+Specifies the difference in nanoseconds between the actual transmission >+time at the reference plane and the reported transmit time stamp. This >+value will be added to egress time stamps obtained from the hardware. >+The default is 0. >+.TP >+.B ingressLatency >+Specifies the difference in nanoseconds between the reported receive >+time stamp and the actual reception time at reference plane. This value >+will be subtracted from ingress time stamps obtained from the hardware. >+The default is 0. > > .SH PROGRAM AND CLOCK OPTIONS > >diff --git a/ptp4l.c b/ptp4l.c >index 83824f7..c18406f 100644 >--- a/ptp4l.c >+++ b/ptp4l.c >@@ -92,6 +92,8 @@ static struct config cfg_settings = { > /* Default to very a large neighborPropDelay threshold */ > .neighborPropDelayThresh = 20000000, > .min_neighbor_prop_delay = -20000000, >+ .tx_timestamp_offset = 0, >+ .rx_timestamp_offset = 0, > }, > > .timestamping = TS_HARDWARE, >-- >1.7.10.4 > > >------------------------------------------------------------------------------ >Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >from Actuate! Instantly Supercharge Your Business Reports and Dashboards >with Interactivity, Sharing, Native Excel Exports, App Integration & more >Get technology previously reserved for billion-dollar corporations, FREE >http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clk >trk >_______________________________________________ >Linuxptp-devel mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/linuxptp-devel ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Linuxptp-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
