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Append the path trace list to announce messages when enabled. 

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
master
Richard Cochran 2012-08-08 07:46:29 +02:00
parent e1c2027266
commit 9f72080260
1 changed files with 21 additions and 0 deletions
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21
port.c
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@ -275,6 +275,24 @@ static void free_foreign_masters(struct port *p)
}
}
static int path_trace_append(struct port *p, struct ptp_message *m,
struct parentDS *dad)
{
struct path_trace_tlv *ptt;
int length = 1 + dad->path_length;
if (length > PATH_TRACE_MAX) {
return 0;
}
ptt = (struct path_trace_tlv *) m->announce.suffix;
ptt->type = TLV_PATH_TRACE;
ptt->length = length * sizeof(struct ClockIdentity);
memcpy(ptt->cid, dad->ptl, ptt->length);
ptt->cid[length - 1] = clock_identity(p->clock);
m->tlv_count = 1;
return ptt->length + sizeof(ptt->type) + sizeof(ptt->length);
}
static int path_trace_ignore(struct port *p, struct ptp_message *m)
{
struct ClockIdentity cid;
@ -501,6 +519,9 @@ static int port_tx_announce(struct port *p)
pdulen = sizeof(struct announce_msg);
msg->hwts.type = p->timestamping;
if (p->pod.path_trace_enabled)
pdulen += path_trace_append(p, msg, dad);
msg->header.tsmt = ANNOUNCE | p->transportSpecific;
msg->header.ver = PTP_VERSION;
msg->header.messageLength = pdulen;