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Implement the synchronization events. 

This will allow a port to get from the uncalibrated into the slave state.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2011-12-18 11:02:26 +01:00
parent 347b42b7d5
commit 10753faccf
3 changed files with 42 additions and 14 deletions
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13
clock.c
View File

@ -371,13 +371,15 @@ int clock_slave_only(struct clock *c)
return c->dds.slaveOnly;
}
void clock_synchronize(struct clock *c,
struct timespec ingress_ts, struct timestamp origin_ts,
Integer64 correction1, Integer64 correction2)
enum servo_state clock_synchronize(struct clock *c,
struct timespec ingress_ts,
struct timestamp origin_ts,
Integer64 correction1,
Integer64 correction2)
{
double adj;
tmv_t ingress, origin;
enum servo_state state;
enum servo_state state = SERVO_UNLOCKED;
ingress = timespec_to_tmv(ingress_ts);
origin = timestamp_to_tmv(origin_ts);
@ -395,7 +397,7 @@ void clock_synchronize(struct clock *c,
tmv_add(origin, tmv_add(c->path_delay, tmv_add(c->c1, c->c2))));
if (!c->path_delay)
return;
return state;
adj = servo_sample(c->servo, c->master_offset, ingress, &state);
@ -412,6 +414,7 @@ void clock_synchronize(struct clock *c,
clock_ppb(c->clkid, -adj);
break;
}
return state;
}
static void handle_state_decision_event(struct clock *c)

11
clock.h
View File

@ -21,6 +21,7 @@
#define HAVE_CLOCK_H
#include "ds.h"
#include "servo.h"
#include "transport.h"
#define MAX_PORTS 8
@ -141,8 +142,12 @@ int clock_slave_only(struct clock *c);
* @param correction1 The correction field of the sync message.
* @param correction2 The correction field of the follow up message.
* Pass zero in the case of one step operation.
* @return The state of the clock's servo.
*/
void clock_synchronize(struct clock *c,
struct timespec ingress_ts, struct timestamp origin_ts,
Integer64 correction1, Integer64 correction2);
enum servo_state clock_synchronize(struct clock *c,
struct timespec ingress_ts,
struct timestamp origin_ts,
Integer64 correction1,
Integer64 correction2);
#endif

26
port.c
View File

@ -240,6 +240,26 @@ static int port_set_delay_tmo(struct port *p)
return timerfd_settime(p->fda.fd[FD_DELAY_TIMER], 0, &tmo, NULL);
}
static void port_synchronize(struct port *p,
struct timespec ingress_ts,
struct timestamp origin_ts,
Integer64 correction1, Integer64 correction2)
{
enum servo_state state;
state = clock_synchronize(p->clock, ingress_ts, origin_ts,
correction1, correction2);
switch (state) {
case SERVO_UNLOCKED:
case SERVO_JUMP:
port_dispatch(p, EV_SYNCHRONIZATION_FAULT);
break;
case SERVO_LOCKED:
port_dispatch(p, EV_MASTER_CLOCK_SELECTED);
break;
}
}
static int port_delay_request(struct port *p)
{
struct ptp_message *msg;
@ -495,7 +515,7 @@ static void process_follow_up(struct port *p, struct ptp_message *m)
if (memcmp(pid, &m->header.sourcePortIdentity, sizeof(*pid)))
return;
clock_synchronize(p->clock, syn->hwts.ts, m->ts.pdu,
port_synchronize(p, syn->hwts.ts, m->ts.pdu,
syn->header.correction, m->header.correction);
}
@ -525,7 +545,7 @@ static void process_sync(struct port *p, struct ptp_message *m)
// TODO - add asymmetry value to correctionField.
if (one_step(m)) {
clock_synchronize(p->clock, m->hwts.ts, m->ts.pdu,
port_synchronize(p, m->hwts.ts, m->ts.pdu,
m->header.correction, 0);
return;
}
@ -534,7 +554,7 @@ static void process_sync(struct port *p, struct ptp_message *m)
*/
fup = p->last_follow_up;
if (fup && fup->header.sequenceId == m->header.sequenceId) {
clock_synchronize(p->clock, m->hwts.ts, fup->ts.pdu,
port_synchronize(p, m->hwts.ts, fup->ts.pdu,
m->header.correction, fup->header.correction);
return;
}