diff options
| -rw-r--r-- | ospfd/ospf_zebra.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/ospfd/ospf_zebra.c b/ospfd/ospf_zebra.c index 84a2b63fbf..3922c44d9c 100644 --- a/ospfd/ospf_zebra.c +++ b/ospfd/ospf_zebra.c @@ -537,6 +537,7 @@ void ospf_zebra_update_prefix_sid(const struct sr_prefix *srp) { struct zapi_labels zl; struct zapi_nexthop *znh; + struct zapi_nexthop *znh_backup; struct listnode *node; struct ospf_path *path; @@ -578,12 +579,42 @@ void ospf_zebra_update_prefix_sid(const struct sr_prefix *srp) if (zl.nexthop_num >= MULTIPATH_NUM) break; + /* TI-LFA backup path label stack comes first, if + * present */ + if (path->srni.backup_label_stack) { + znh_backup = &zl.backup_nexthops + [zl.backup_nexthop_num++]; + znh_backup->type = NEXTHOP_TYPE_IPV4_IFINDEX; + znh_backup->gate.ipv4 = + path->srni.backup_nexthop; + + znh_backup->label_num = + path->srni.backup_label_stack + ->num_labels; + memcpy(znh_backup->labels, + path->srni.backup_label_stack->label, + sizeof(mpls_label_t) + * znh_backup->label_num); + } + znh = &zl.nexthops[zl.nexthop_num++]; znh->type = NEXTHOP_TYPE_IPV4_IFINDEX; znh->gate.ipv4 = path->nexthop; znh->ifindex = path->ifindex; znh->label_num = 1; znh->labels[0] = path->srni.label_out; + + /* Set TI-LFA backup nexthop info if present */ + if (path->srni.backup_label_stack) { + SET_FLAG(zl.message, ZAPI_LABELS_HAS_BACKUPS); + SET_FLAG(znh->flags, + ZAPI_NEXTHOP_FLAG_HAS_BACKUP); + + /* Just care about a single TI-LFA backup path + * for now */ + znh->backup_num = 1; + znh->backup_idx[0] = zl.backup_nexthop_num - 1; + } } break; default: |