* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with GNU Zebra; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_MPLS_H
/* Definitions and macros. */
-#define MPLS_MAX_LABELS 2 /* Maximum # labels that can be pushed. */
-
#define NHLFE_FAMILY(nhlfe) \
(((nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6 \
|| (nhlfe)->nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX) \
? AF_INET6 \
: AF_INET)
+#define MPLS_LABEL_HELPSTR \
+ "Specify label(s) for this route\nOne or more " \
+ "labels in the range (16-1048575) separated by '/'\n"
/* Typedefs */
typedef struct zebra_slsp_t_ zebra_slsp_t;
typedef struct zebra_nhlfe_t_ zebra_nhlfe_t;
typedef struct zebra_lsp_t_ zebra_lsp_t;
+typedef struct zebra_fec_t_ zebra_fec_t;
/*
* (Outgoing) nexthop label forwarding entry configuration
u_char addr_family;
};
+/*
+ * FEC to label binding.
+ */
+struct zebra_fec_t_ {
+ /* FEC (prefix) */
+ struct route_node *rn;
+
+ /* In-label - either statically bound or derived from label block. */
+ mpls_label_t label;
+
+ /* Label index (into global label block), if valid */
+ u_int32_t label_index;
+
+ /* Flags. */
+ u_int32_t flags;
+#define FEC_FLAG_CONFIGURED (1 << 0)
+
+ /* Clients interested in this FEC. */
+ struct list *client_list;
+};
/* Function declarations. */
* Label to string conversion, labels in string separated by '/'.
*/
char *mpls_label2str(u_int8_t num_labels, mpls_label_t *labels, char *buf,
- int len);
+ int len, int pretty);
+
+/*
+ * Add/update global label block.
+ */
+int zebra_mpls_label_block_add(struct zebra_vrf *zvrf, u_int32_t start_label,
+ u_int32_t end_label);
+
+/*
+ * Delete global label block.
+ */
+int zebra_mpls_label_block_del(struct zebra_vrf *vrf);
+
+/*
+ * Display MPLS global label block configuration (VTY command handler).
+ */
+int zebra_mpls_write_label_block_config(struct vty *vty, struct zebra_vrf *vrf);
+
+/*
+ * Install dynamic LSP entry.
+ */
+int zebra_mpls_lsp_install(struct zebra_vrf *zvrf, struct route_node *rn,
+ struct route_entry *re);
+
+/*
+ * Uninstall dynamic LSP entry, if any.
+ */
+int zebra_mpls_lsp_uninstall(struct zebra_vrf *zvrf, struct route_node *rn,
+ struct route_entry *re);
+
+/*
+ * Registration from a client for the label binding for a FEC. If a binding
+ * already exists, it is informed to the client.
+ * NOTE: If there is a manually configured label binding, that is used.
+ * Otherwise, if aa label index is specified, it means we have to allocate the
+ * label from a locally configured label block (SRGB), if one exists and index
+ * is acceptable.
+ */
+int zebra_mpls_fec_register(struct zebra_vrf *zvrf, struct prefix *p,
+ u_int32_t label_index, struct zserv *client);
+
+/*
+ * Deregistration from a client for the label binding for a FEC. The FEC
+ * itself is deleted if no other registered clients exist and there is no
+ * label bound to the FEC.
+ */
+int zebra_mpls_fec_unregister(struct zebra_vrf *zvrf, struct prefix *p,
+ struct zserv *client);
+
+/*
+ * Cleanup any FECs registered by this client.
+ */
+int zebra_mpls_cleanup_fecs_for_client(struct zebra_vrf *zvrf,
+ struct zserv *client);
+
+/*
+ * Return FEC (if any) to which this label is bound.
+ * Note: Only works for per-prefix binding and when the label is not
+ * implicit-null.
+ * TODO: Currently walks entire table, can optimize later with another
+ * hash..
+ */
+zebra_fec_t *zebra_mpls_fec_for_label(struct zebra_vrf *zvrf,
+ mpls_label_t label);
+
+/*
+ * Inform if specified label is currently bound to a FEC or not.
+ */
+int zebra_mpls_label_already_bound(struct zebra_vrf *zvrf, mpls_label_t label);
+
+/*
+ * Add static FEC to label binding. If there are clients registered for this
+ * FEC, notify them. If there are labeled routes for this FEC, install the
+ * label forwarding entry.
+ */
+int zebra_mpls_static_fec_add(struct zebra_vrf *zvrf, struct prefix *p,
+ mpls_label_t in_label);
+
+/*
+ * Remove static FEC to label binding. If there are no clients registered
+ * for this FEC, delete the FEC; else notify clients.
+ * Note: Upon delete of static binding, if label index exists for this FEC,
+ * client may need to be updated with derived label.
+ */
+int zebra_mpls_static_fec_del(struct zebra_vrf *zvrf, struct prefix *p);
+
+/*
+ * Display MPLS FEC to label binding configuration (VTY command handler).
+ */
+int zebra_mpls_write_fec_config(struct vty *vty, struct zebra_vrf *zvrf);
+
+/*
+ * Display MPLS FEC to label binding (VTY command handler).
+ */
+void zebra_mpls_print_fec_table(struct vty *vty, struct zebra_vrf *zvrf);
+
+/*
+ * Display MPLS FEC to label binding for a specific FEC (VTY command handler).
+ */
+void zebra_mpls_print_fec(struct vty *vty, struct zebra_vrf *zvrf,
+ struct prefix *p);
/*
* Install/uninstall a FEC-To-NHLFE (FTN) binding.
int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type,
mpls_label_t in_label, mpls_label_t out_label,
enum nexthop_types_t gtype, union g_addr *gate,
- char *ifname, ifindex_t ifindex);
+ ifindex_t ifindex);
/*
* Uninstall a particular NHLFE in the forwarding table. If this is
*/
int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type,
mpls_label_t in_label, enum nexthop_types_t gtype,
- union g_addr *gate, char *ifname, ifindex_t ifindex);
+ union g_addr *gate, ifindex_t ifindex);
/*
* Uninstall all LDP NHLFEs for a particular LSP forwarding entry.
*/
void mpls_ldp_ftn_uninstall_all(struct zebra_vrf *zvrf, int afi);
+/*
+ * Uninstall all Segment Routing NHLFEs for a particular LSP forwarding entry.
+ * If no other NHLFEs exist, the entry would be deleted.
+ */
+void mpls_sr_lsp_uninstall_all(struct hash_backet *backet, void *ctxt);
+
#if defined(HAVE_CUMULUS)
/*
* Check that the label values used in LSP creation are consistent. The
mpls_label_t in_label,
mpls_label_t out_label,
enum nexthop_types_t gtype,
- union g_addr *gate, char *ifname,
- ifindex_t ifindex);
+ union g_addr *gate, ifindex_t ifindex);
#endif /* HAVE_CUMULUS */
/*
int zebra_mpls_static_lsp_add(struct zebra_vrf *zvrf, mpls_label_t in_label,
mpls_label_t out_label,
enum nexthop_types_t gtype, union g_addr *gate,
- char *ifname, ifindex_t ifindex);
+ ifindex_t ifindex);
/*
* Delete static LSP entry. This may be the delete of one particular
*/
int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label,
enum nexthop_types_t gtype, union g_addr *gate,
- char *ifname, ifindex_t ifindex);
+ ifindex_t ifindex);
/*
* Schedule all MPLS label forwarding entries for processing.
*/
static inline u_char lsp_distance(enum lsp_types_t type)
{
- if (type == ZEBRA_LSP_STATIC)
+ switch (type) {
+ case ZEBRA_LSP_STATIC:
return (route_distance(ZEBRA_ROUTE_STATIC));
-
- return 150;
+ case ZEBRA_LSP_LDP:
+ return (route_distance(ZEBRA_ROUTE_LDP));
+ case ZEBRA_LSP_BGP:
+ return (route_distance(ZEBRA_ROUTE_BGP));
+ default:
+ return 150;
+ }
}
/*
* Map RIB type to LSP type. Used when labeled-routes from BGP
* are converted into LSPs.
*/
-static inline enum lsp_types_t lsp_type_from_rib_type(int rib_type)
+static inline enum lsp_types_t lsp_type_from_re_type(int re_type)
{
- switch (rib_type) {
+ switch (re_type) {
case ZEBRA_ROUTE_STATIC:
return ZEBRA_LSP_STATIC;
+ case ZEBRA_ROUTE_BGP:
+ return ZEBRA_LSP_BGP;
default:
return ZEBRA_LSP_NONE;
}
}
+/*
+ * Map LSP type to RIB type.
+ */
+static inline int re_type_from_lsp_type(enum lsp_types_t lsp_type)
+{
+ switch (lsp_type) {
+ case ZEBRA_LSP_STATIC:
+ return ZEBRA_ROUTE_STATIC;
+ case ZEBRA_LSP_LDP:
+ return ZEBRA_ROUTE_LDP;
+ case ZEBRA_LSP_BGP:
+ return ZEBRA_ROUTE_BGP;
+ case ZEBRA_LSP_SR:
+ return ZEBRA_ROUTE_OSPF;
+ case ZEBRA_LSP_NONE:
+ default:
+ return ZEBRA_ROUTE_KERNEL;
+ }
+}
+
/* NHLFE type as printable string. */
static inline const char *nhlfe_type2str(enum lsp_types_t lsp_type)
{
return "Static";
case ZEBRA_LSP_LDP:
return "LDP";
+ case ZEBRA_LSP_BGP:
+ return "BGP";
+ case ZEBRA_LSP_SR:
+ return "SR";
default:
return "Unknown";
}
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