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bgpd: tx addpath info for labeled unicast

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Labeled unicast needs path IDs too!

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
This commit is contained in:
Quentin Young 2019-08-06 21:18:42 +00:00
parent edc2457546
commit ec15e1b588
3 changed files with 16 additions and 4 deletions
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3
bgpd/bgp_attr.c
View file

@ -2956,7 +2956,8 @@ void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
addpath_encode, addpath_tx_id);
} else if (safi == SAFI_LABELED_UNICAST) {
/* Prefix write with label. */
stream_put_labeled_prefix(s, p, label);
stream_put_labeled_prefix(s, p, label, addpath_encode,
addpath_tx_id);
} else if (safi == SAFI_FLOWSPEC) {
if (PSIZE (p->prefixlen)+2 < FLOWSPEC_NLRI_SIZELIMIT)
stream_putc(s, PSIZE (p->prefixlen)+2);

14
lib/stream.c
View file

@ -904,20 +904,30 @@ int stream_put_prefix(struct stream *s, struct prefix *p)
/* Put NLRI with label */
int stream_put_labeled_prefix(struct stream *s, struct prefix *p,
mpls_label_t *label)
mpls_label_t *label, int addpath_encode,
uint32_t addpath_tx_id)
{
size_t psize;
size_t psize_with_addpath;
uint8_t *label_pnt = (uint8_t *)label;
STREAM_VERIFY_SANE(s);
psize = PSIZE(p->prefixlen);
psize_with_addpath = psize + (addpath_encode ? 4 : 0);
if (STREAM_WRITEABLE(s) < (psize + 3)) {
if (STREAM_WRITEABLE(s) < (psize_with_addpath + 3)) {
STREAM_BOUND_WARN(s, "put");
return 0;
}
if (addpath_encode) {
s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 24);
s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 16);
s->data[s->endp++] = (uint8_t)(addpath_tx_id >> 8);
s->data[s->endp++] = (uint8_t)addpath_tx_id;
}
stream_putc(s, (p->prefixlen + 24));
stream_putc(s, label_pnt[0]);
stream_putc(s, label_pnt[1]);

3
lib/stream.h
View file

@ -199,7 +199,8 @@ extern int stream_put_prefix_addpath(struct stream *, struct prefix *,
uint32_t addpath_tx_id);
extern int stream_put_prefix(struct stream *, struct prefix *);
extern int stream_put_labeled_prefix(struct stream *, struct prefix *,
mpls_label_t *);
mpls_label_t *, int addpath_encode,
uint32_t addpath_tx_id);
extern void stream_get(void *, struct stream *, size_t);
extern bool stream_get2(void *data, struct stream *s, size_t size);
extern void stream_get_from(void *, struct stream *, size_t, size_t);