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port: Introduce unicast sync messages. 

The port will need to send unicast Sync messages in order to support
the NSM protocol.  Besides that, we will need this ability anyhow if
we ever want to implement unicast operation.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2017-11-23 23:13:27 -08:00
parent 3a264e6eec
commit b0d9c9600a
1 changed files with 10 additions and 2 deletions
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12
port.c
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@ -1333,7 +1333,7 @@ static int port_tx_announce(struct port *p)
return err;
}
static int port_tx_sync(struct port *p)
static int port_tx_sync(struct port *p, struct address *dst)
{
struct ptp_message *msg, *fup;
int err, event;
@ -1369,6 +1369,10 @@ static int port_tx_sync(struct port *p)
if (p->timestamping != TS_ONESTEP)
msg->header.flagField[0] |= TWO_STEP;
if (dst) {
msg->address = *dst;
msg->header.flagField[0] |= UNICAST;
}
err = port_prepare_and_send(p, msg, event);
if (err) {
pr_err("port %hu: send sync failed", portnum(p));
@ -1398,6 +1402,10 @@ static int port_tx_sync(struct port *p)
ts_to_timestamp(&msg->hwts.ts, &fup->follow_up.preciseOriginTimestamp);
if (dst) {
fup->address = *dst;
fup->header.flagField[0] |= UNICAST;
}
if (p->follow_up_info && follow_up_info_append(p, fup)) {
pr_err("port %hu: append fup info failed", portnum(p));
err = -1;
@ -2345,7 +2353,7 @@ enum fsm_event port_event(struct port *p, int fd_index)
case FD_SYNC_TX_TIMER:
pr_debug("port %hu: master sync timeout", portnum(p));
port_set_sync_tx_tmo(p);
return port_tx_sync(p) ? EV_FAULT_DETECTED : EV_NONE;
return port_tx_sync(p, NULL) ? EV_FAULT_DETECTED : EV_NONE;
case FD_RTNL:
pr_debug("port %hu: received link status notification", portnum(p));