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Send peer delay requests continuously in P2P mode. 

When a port makes a transition from one state to another, it resets all of
the message timers. While this is the correct behavior for E2E mode, the
P2P mode requires sending peer delay requests most of the time.

Even though all the other timer logic is identical, still making an
exception for P2P mode would make the code even harder to follow. So this
patch introduces two nearly identical helper functions to handle timer
reprogramming during a state transition.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2013-02-05 17:30:40 +01:00
parent f8be779f28
commit 6dc1b90306
1 changed files with 77 additions and 50 deletions
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127
port.c
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@ -1490,6 +1490,79 @@ struct foreign_clock *port_compute_best(struct port *p)
return p->best;
}
static void port_e2e_transition(struct port *p, enum port_state next)
{
port_clr_tmo(p->fda.fd[FD_ANNOUNCE_TIMER]);
port_clr_tmo(p->fda.fd[FD_DELAY_TIMER]);
port_clr_tmo(p->fda.fd[FD_QUALIFICATION_TIMER]);
port_clr_tmo(p->fda.fd[FD_MANNO_TIMER]);
port_clr_tmo(p->fda.fd[FD_SYNC_TIMER]);
switch (next) {
case PS_INITIALIZING:
break;
case PS_FAULTY:
case PS_DISABLED:
port_disable(p);
break;
case PS_LISTENING:
port_set_announce_tmo(p);
break;
case PS_PRE_MASTER:
port_set_qualification_tmo(p);
break;
case PS_MASTER:
case PS_GRAND_MASTER:
port_set_manno_tmo(p);
port_set_sync_tmo(p);
break;
case PS_PASSIVE:
port_set_announce_tmo(p);
break;
case PS_UNCALIBRATED:
case PS_SLAVE:
port_set_announce_tmo(p);
port_set_delay_tmo(p);
break;
};
}
static void port_p2p_transition(struct port *p, enum port_state next)
{
port_clr_tmo(p->fda.fd[FD_ANNOUNCE_TIMER]);
/* Leave FD_DELAY_TIMER running. */
port_clr_tmo(p->fda.fd[FD_QUALIFICATION_TIMER]);
port_clr_tmo(p->fda.fd[FD_MANNO_TIMER]);
port_clr_tmo(p->fda.fd[FD_SYNC_TIMER]);
switch (next) {
case PS_INITIALIZING:
break;
case PS_FAULTY:
case PS_DISABLED:
port_disable(p);
break;
case PS_LISTENING:
port_set_announce_tmo(p);
break;
case PS_PRE_MASTER:
port_set_qualification_tmo(p);
break;
case PS_MASTER:
case PS_GRAND_MASTER:
port_set_manno_tmo(p);
port_set_sync_tmo(p);
break;
case PS_PASSIVE:
port_set_announce_tmo(p);
break;
case PS_UNCALIBRATED:
case PS_SLAVE:
port_set_announce_tmo(p);
break;
};
}
int port_dispatch(struct port *p, enum fsm_event event, int mdiff)
{
enum port_state next;
@ -1527,58 +1600,12 @@ int port_dispatch(struct port *p, enum fsm_event event, int mdiff)
port_show_transition(p, next, event);
port_clr_tmo(p->fda.fd[FD_ANNOUNCE_TIMER]);
port_clr_tmo(p->fda.fd[FD_DELAY_TIMER]);
port_clr_tmo(p->fda.fd[FD_QUALIFICATION_TIMER]);
port_clr_tmo(p->fda.fd[FD_MANNO_TIMER]);
port_clr_tmo(p->fda.fd[FD_SYNC_TIMER]);
switch (next) {
case PS_INITIALIZING:
break;
case PS_FAULTY:
case PS_DISABLED:
port_disable(p);
break;
case PS_LISTENING:
port_set_announce_tmo(p);
break;
case PS_PRE_MASTER:
port_set_qualification_tmo(p);
break;
case PS_MASTER:
case PS_GRAND_MASTER:
port_set_manno_tmo(p);
port_set_sync_tmo(p);
break;
case PS_PASSIVE:
port_set_announce_tmo(p);
break;
case PS_UNCALIBRATED:
case PS_SLAVE:
port_set_announce_tmo(p);
port_set_delay_tmo(p);
break;
};
if (p->delayMechanism == DM_P2P) {
switch (next) {
case PS_INITIALIZING:
case PS_FAULTY:
case PS_DISABLED:
break;
case PS_LISTENING:
case PS_PRE_MASTER:
case PS_MASTER:
case PS_GRAND_MASTER:
case PS_PASSIVE:
port_set_delay_tmo(p);
break;
case PS_UNCALIBRATED:
case PS_SLAVE:
/*already set above*/
break;
};
port_p2p_transition(p, next);
} else {
port_e2e_transition(p, next);
}
p->state = next;
return 0;
}