[PATCH v10] examples/ptp: replace terms master and slave

[Stephen Hemminger <stephen@networkplumber.org>]

Remove one of the few remaining uses of master/slave.

The IEEE 1588 standard has been updated to remove the use
of master-slave terminology. Change the sample to Use the terms
recommended by IEEE 1588g-2022 amendment.

  In place of the term “master”, use the term “timeTransmitter”.
  In place of the term “slave”, use the term “timeReceiver”.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>

---
v10 - rebase to current version

 doc/guides/nics/bnxt.rst                   |  8 ++--
 doc/guides/sample_app_ug/img/ptpclient.svg |  4 +-
 doc/guides/sample_app_ug/intro.rst         |  4 +-
 doc/guides/sample_app_ug/ptpclient.rst     | 29 ++++++------
 examples/ptpclient/ptpclient.c             | 54 +++++++++++-----------
 5 files changed, 51 insertions(+), 48 deletions(-)

diff --git a/doc/guides/nics/bnxt.rst b/doc/guides/nics/bnxt.rst
index 6db880d632..8b9fcd2558 100644
--- a/doc/guides/nics/bnxt.rst
+++ b/doc/guides/nics/bnxt.rst
@@ -538,10 +538,12 @@ Time Synchronization
 ~~~~~~~~~~~~~~~~~~~~
 
 System operators may run a PTP (Precision Time Protocol) client application to
-synchronize the time on the NIC (and optionally, on the system) to a PTP master.
+synchronize the time on the NIC (and optionally, on the system) to a
+PTP timeTransmitter.
 
-The BNXT PMD supports a PTP client application to communicate with a PTP master
-clock using DPDK IEEE1588 APIs. Note that the PTP client application needs to
+The BNXT PMD supports a PTP client application to communicate with a
+PTP timeTransmitter using DPDK IEEE1588 APIs.
+Note that the PTP client application needs to
 run on PF and vector mode needs to be disabled.
 
 .. code-block:: console
diff --git a/doc/guides/sample_app_ug/img/ptpclient.svg b/doc/guides/sample_app_ug/img/ptpclient.svg
index fd78ef839b..41869bc4c9 100644
--- a/doc/guides/sample_app_ug/img/ptpclient.svg
+++ b/doc/guides/sample_app_ug/img/ptpclient.svg
@@ -488,7 +488,7 @@
          sodipodi:role="line"
          id="tspan7096"
          x="38.764343"
-         y="590.47479">master</tspan></text>
+         y="590.47479">timeTransmitter</tspan></text>
     <text
        xml:space="preserve"
        style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:47.51625061px;line-height:100%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
@@ -510,7 +510,7 @@
          sodipodi:role="line"
          id="tspan7104"
          x="271.23392"
-         y="593.71478">slave</tspan></text>
+         y="593.71478">timeReceiver</tspan></text>
     <text
        xml:space="preserve"
        style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:20.3917141px;line-height:125%;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#800080;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
diff --git a/doc/guides/sample_app_ug/intro.rst b/doc/guides/sample_app_ug/intro.rst
index e765f1fd6b..5453df5766 100644
--- a/doc/guides/sample_app_ug/intro.rst
+++ b/doc/guides/sample_app_ug/intro.rst
@@ -85,8 +85,8 @@ examples are highlighted below.
 * :doc:`Precision Time Protocol (PTP) client<ptpclient>`: The PTP
   client is another minimal implementation of a real world application.
   In this case the application is a PTP client that communicates with a PTP
-  master clock to synchronize time on a Network Interface Card (NIC) using the
-  IEEE1588 protocol.
+  timeTransmitter to synchronize time on a Network Interface Card (NIC)
+  using the IEEE1588 protocol.
 
 * :doc:`Quality of Service (QoS) Scheduler<qos_scheduler>`: The QoS
   Scheduler application demonstrates the use of DPDK to provide QoS scheduling.
diff --git a/doc/guides/sample_app_ug/ptpclient.rst b/doc/guides/sample_app_ug/ptpclient.rst
index d47e942738..242c9628ea 100644
--- a/doc/guides/sample_app_ug/ptpclient.rst
+++ b/doc/guides/sample_app_ug/ptpclient.rst
@@ -5,8 +5,9 @@ PTP Client Sample Application
 =============================
 
 The PTP (Precision Time Protocol) client sample application is a simple
-example of using the DPDK IEEE1588 API to communicate with a PTP master clock
-to synchronize the time on the NIC and, optionally, on the Linux system.
+example of using the DPDK IEEE1588 API to communicate with a PTP
+timeTransmitter to synchronize the time on the NIC and, optionally,
+on the Linux system.
 
 Note, PTP is a time syncing protocol and cannot be used within DPDK as a
 time-stamping mechanism. See the following for an explanation of the protocol:
@@ -21,10 +22,10 @@ The PTP sample application is intended as a simple reference implementation of
 a PTP client using the DPDK IEEE1588 API.
 In order to keep the application simple the following assumptions are made:
 
-* The first discovered master is the main for the session.
+* The first discovered timeTransmitter is the main for the session.
 * Only L2 PTP packets are supported.
 * Only the PTP v2 protocol is supported.
-* Only the slave clock is implemented.
+* Only the timeReceiver clock is implemented.
 
 
 How the Application Works
@@ -38,12 +39,12 @@ How the Application Works
 
 The PTP synchronization in the sample application works as follows:
 
-* Master sends *Sync* message - the slave saves it as T2.
-* Master sends *Follow Up* message and sends time of T1.
-* Slave sends *Delay Request* frame to PTP Master and stores T3.
-* Master sends *Delay Response* T4 time which is time of received T3.
+* TimeTransmitter sends *Sync* message - the TimeReceiver saves it as T2.
+* TimeTransmitter sends *Follow Up* message and sends time of T1.
+* TimeReceiver sends *Delay Request* frame to PTP TimeTransmitter and stores T3.
+* TimeTransmitter sends *Delay Response* T4 time which is time of received T3.
 
-The adjustment for slave can be represented as:
+The adjustment for timeReceiver can be represented as:
 
    adj = -[(T2-T1)-(T4 - T3)]/2
 
@@ -71,8 +72,8 @@ Refer to *DPDK Getting Started Guide* for general information on running
 applications and the Environment Abstraction Layer (EAL) options.
 
 * ``-p portmask``: Hexadecimal portmask.
-* ``-T 0``: Update only the PTP slave clock.
-* ``-T 1``: Update the PTP slave clock and synchronize the Linux Kernel to the PTP clock.
+* ``-T 0``: Update only the PTP timeReceiver clock.
+* ``-T 1``: Update the PTP timeReceiver clock and synchronize the Linux Kernel to the PTP clock.
 
 
 Code Explanation
@@ -178,7 +179,7 @@ The forwarding loop can be interrupted and the application closed using
 PTP parsing
 ~~~~~~~~~~~
 
-The ``parse_ptp_frames()`` function processes PTP packets, implementing slave
+The ``parse_ptp_frames()`` function processes PTP packets, implementing timeReceiver
 PTP IEEE1588 L2 functionality.
 
 .. literalinclude:: ../../../examples/ptpclient/ptpclient.c
@@ -187,11 +188,11 @@ PTP IEEE1588 L2 functionality.
     :end-before:  >8 End of function processes PTP packets.
 
 There are 3 types of packets on the RX path which we must parse to create a minimal
-implementation of the PTP slave client:
+implementation of the PTP timeReceiver client:
 
 * SYNC packet.
 * FOLLOW UP packet
 * DELAY RESPONSE packet.
 
 When we parse the *FOLLOW UP* packet we also create and send a *DELAY_REQUEST* packet.
-Also when we parse the *DELAY RESPONSE* packet, and all conditions are met we adjust the PTP slave clock.
+Also when we parse the *DELAY RESPONSE* packet, and all conditions are met we adjust the PTP timeReceiver clock.
diff --git a/examples/ptpclient/ptpclient.c b/examples/ptpclient/ptpclient.c
index afb61bba51..889a8c075b 100644
--- a/examples/ptpclient/ptpclient.c
+++ b/examples/ptpclient/ptpclient.c
@@ -119,14 +119,14 @@ struct ptp_message {
 	} __rte_packed;
 };
 
-struct ptpv2_data_slave_ordinary {
+struct ptpv2_timeReceiver_ordinary {
 	struct rte_mbuf *m;
 	struct timespec tstamp1;
 	struct timespec tstamp2;
 	struct timespec tstamp3;
 	struct timespec tstamp4;
 	struct clock_id client_clock_id;
-	struct clock_id master_clock_id;
+	struct clock_id transmitter_clock_id;
 	struct timeval new_adj;
 	int64_t delta;
 	uint16_t portid;
@@ -137,7 +137,7 @@ struct ptpv2_data_slave_ordinary {
 	uint16_t current_ptp_port;
 };
 
-static struct ptpv2_data_slave_ordinary ptp_data;
+static struct ptpv2_timeReceiver_ordinary ptp_data;
 
 static inline uint64_t timespec64_to_ns(const struct timespec *ts)
 {
@@ -266,38 +266,38 @@ port_init(uint16_t port, struct rte_mempool *mbuf_pool)
 }
 
 static void
-print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data)
+print_clock_info(struct ptpv2_timeReceiver_ordinary *ptp_data)
 {
 	int64_t nsec;
 	struct timespec net_time, sys_time;
 
-	printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
-		ptp_data->master_clock_id.id[0],
-		ptp_data->master_clock_id.id[1],
-		ptp_data->master_clock_id.id[2],
-		ptp_data->master_clock_id.id[3],
-		ptp_data->master_clock_id.id[4],
-		ptp_data->master_clock_id.id[5],
-		ptp_data->master_clock_id.id[6],
-		ptp_data->master_clock_id.id[7]);
-
-	printf("\nT2 - Slave  Clock.  %lds %ldns",
+	printf("TimeTransmitter Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+		ptp_data->transmitter_clock_id.id[0],
+		ptp_data->transmitter_clock_id.id[1],
+		ptp_data->transmitter_clock_id.id[2],
+		ptp_data->transmitter_clock_id.id[3],
+		ptp_data->transmitter_clock_id.id[4],
+		ptp_data->transmitter_clock_id.id[5],
+		ptp_data->transmitter_clock_id.id[6],
+		ptp_data->transmitter_clock_id.id[7]);
+
+	printf("\nT2 - TimeReceiver  Clock.  %lds %ldns",
 			(ptp_data->tstamp2.tv_sec),
 			(ptp_data->tstamp2.tv_nsec));
 
-	printf("\nT1 - Master Clock.  %lds %ldns ",
+	printf("\nT1 - TimeTransmitter Clock.  %lds %ldns ",
 			ptp_data->tstamp1.tv_sec,
 			(ptp_data->tstamp1.tv_nsec));
 
-	printf("\nT3 - Slave  Clock.  %lds %ldns",
+	printf("\nT3 - TimeReceiver  Clock.  %lds %ldns",
 			ptp_data->tstamp3.tv_sec,
 			(ptp_data->tstamp3.tv_nsec));
 
-	printf("\nT4 - Master Clock.  %lds %ldns ",
+	printf("\nT4 - TimeTransmitter Clock.  %lds %ldns ",
 			ptp_data->tstamp4.tv_sec,
 			(ptp_data->tstamp4.tv_nsec));
 
-	printf("\nDelta between master and slave clocks:%"PRId64"ns\n",
+	printf("\nDelta between timeTransmitter and timeReceiver clocks:%"PRId64"ns\n",
 			ptp_data->delta);
 
 	clock_gettime(CLOCK_REALTIME, &sys_time);
@@ -331,7 +331,7 @@ print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data)
 }
 
 static int64_t
-delta_eval(struct ptpv2_data_slave_ordinary *ptp_data)
+delta_eval(struct ptpv2_timeReceiver_ordinary *ptp_data)
 {
 	int64_t delta;
 	uint64_t t1 = 0;
@@ -353,7 +353,7 @@ delta_eval(struct ptpv2_data_slave_ordinary *ptp_data)
  * Parse the PTP SYNC message.
  */
 static void
-parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx)
+parse_sync(struct ptpv2_timeReceiver_ordinary *ptp_data, uint16_t rx_tstamp_idx)
 {
 	struct ptp_header *ptp_hdr;
 
@@ -362,7 +362,7 @@ parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx)
 	ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id);
 
 	if (ptp_data->ptpset == 0) {
-		rte_memcpy(&ptp_data->master_clock_id,
+		rte_memcpy(&ptp_data->transmitter_clock_id,
 				&ptp_hdr->source_port_id.clock_id,
 				sizeof(struct clock_id));
 		ptp_data->ptpset = 1;
@@ -383,7 +383,7 @@ parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx)
  * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock.
  */
 static void
-parse_fup(struct ptpv2_data_slave_ordinary *ptp_data)
+parse_fup(struct ptpv2_timeReceiver_ordinary *ptp_data)
 {
 	struct rte_ether_hdr *eth_hdr;
 	struct rte_ether_addr eth_addr;
@@ -402,7 +402,7 @@ parse_fup(struct ptpv2_data_slave_ordinary *ptp_data)
 	eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 	ptp_hdr = rte_pktmbuf_mtod_offset(m, struct ptp_header *,
 					  sizeof(struct rte_ether_hdr));
-	if (memcmp(&ptp_data->master_clock_id,
+	if (memcmp(&ptp_data->transmitter_clock_id,
 			&ptp_hdr->source_port_id.clock_id,
 			sizeof(struct clock_id)) != 0)
 		return;
@@ -533,7 +533,7 @@ update_kernel_time(void)
  * Parse the DELAY_RESP message.
  */
 static void
-parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data)
+parse_drsp(struct ptpv2_timeReceiver_ordinary *ptp_data)
 {
 	struct rte_mbuf *m = ptp_data->m;
 	struct ptp_message *ptp_msg;
@@ -571,7 +571,7 @@ parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data)
 	}
 }
 
-/* This function processes PTP packets, implementing slave PTP IEEE1588 L2
+/* This function processes PTP packets, implementing timeReceiver PTP IEEE1588 L2
  * functionality.
  */
 
@@ -763,7 +763,7 @@ main(int argc, char *argv[])
 		rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 	/* >8 End of initialization of EAL. */
 
-	memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary));
+	memset(&ptp_data, 0, sizeof(struct ptpv2_timeReceiver_ordinary));
 
 	/* Parse specific arguments. 8< */
 	argc -= ret;
-- 
2.43.0