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Filter incoming announce messages according to the path trace rule.

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Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This commit is contained in:
Richard Cochran 2012-08-07 21:33:13 +02:00
parent f3f62318e2
commit 316fb63453
1 changed files with 31 additions and 0 deletions
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31
port.c
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@ -275,6 +275,34 @@ static void free_foreign_masters(struct port *p)
} }
} }
static int path_trace_ignore(struct port *p, struct ptp_message *m)
{
struct ClockIdentity cid;
struct path_trace_tlv *ptt;
int i, cnt;
if (!p->pod.path_trace_enabled) {
return 0;
}
if (msg_type(m) != ANNOUNCE) {
return 0;
}
if (m->tlv_count != 1) {
return 1;
}
ptt = (struct path_trace_tlv *) m->announce.suffix;
if (ptt->type != TLV_PATH_TRACE) {
return 1;
}
cnt = path_length(ptt);
cid = clock_identity(p->clock);
for (i = 0; i < cnt; i++) {
if (0 == memcmp(&ptt->cid[i], &cid, sizeof(cid)))
return 1;
}
return 0;
}
static int port_clr_tmo(int fd) static int port_clr_tmo(int fd)
{ {
struct itimerspec tmo = { struct itimerspec tmo = {
@ -287,6 +315,9 @@ static int port_ignore(struct port *p, struct ptp_message *m)
{ {
struct ClockIdentity c1, c2; struct ClockIdentity c1, c2;
if (path_trace_ignore(p, m)) {
return 1;
}
if (msg_transport_specific(m) != p->transportSpecific) { if (msg_transport_specific(m) != p->transportSpecific) {
return 1; return 1;
} }