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Extract the follow up info and pass it to the clock.

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Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This commit is contained in:
Richard Cochran 2012-08-31 16:05:12 +02:00
parent 94dd186cdf
commit e5edeacb9a
1 changed files with 23 additions and 0 deletions
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23
port.c
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@ -287,6 +287,21 @@ static int follow_up_info_append(struct port *p, struct ptp_message *m)
return sizeof(*fui);
}
static struct follow_up_info_tlv *follow_up_info_extract(struct ptp_message *m)
{
struct follow_up_info_tlv *f;
f = (struct follow_up_info_tlv *) m->follow_up.suffix;
if (m->tlv_count != 1 ||
f->type != TLV_ORGANIZATION_EXTENSION ||
f->length != sizeof(*f) - sizeof(f->type) - sizeof(f->length) ||
memcmp(f->id, ieee8021_id, sizeof(ieee8021_id)) ||
f->subtype[0] || f->subtype[1] || f->subtype[2] != 1) {
return NULL;
}
return f;
}
static void free_foreign_masters(struct port *p)
{
struct foreign_clock *fc;
@ -1006,6 +1021,14 @@ static void process_follow_up(struct port *p, struct ptp_message *m)
master = clock_parent_identity(p->clock);
if (memcmp(&master, &m->header.sourcePortIdentity, sizeof(master)))
return;
if (p->pod.follow_up_info) {
struct follow_up_info_tlv *fui = follow_up_info_extract(m);
if (!fui)
return;
clock_follow_up_info(p->clock, fui);
}
/*
* Handle out of order packets. The network stack might
* provide the follow up _before_ the sync message. After all,