1 files changed, 221 insertions, 0 deletions
diff --git a/zebra/zebra_evpn.h b/zebra/zebra_evpn.h
new file mode 100644
index 0000000..2c84d23
--- /dev/null
+++ b/zebra/zebra_evpn.h
@@ -0,0 +1,221 @@
+/*
+ * Zebra EVPN Data structures and definitions
+ * These are "internal" to this function.
+ * Copyright (C) 2016, 2017 Cumulus Networks, Inc.
+ * Copyright (C) 2020 Volta Networks.
+ *
+ * This file is part of FRR.
+ *
+ * FRR is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * FRR is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * 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 FRR; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_EVPN_H
+#define _ZEBRA_EVPN_H
+
+#include <zebra.h>
+
+#include "if.h"
+#include "linklist.h"
+#include "bitfield.h"
+
+#include "zebra/zebra_l2.h"
+#include "zebra/interface.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+RB_HEAD(zebra_es_evi_rb_head, zebra_evpn_es_evi);
+RB_PROTOTYPE(zebra_es_evi_rb_head, zebra_evpn_es_evi, rb_node,
+	     zebra_es_evi_rb_cmp);
+
+/* Private Structure to pass callback data for hash iterator */
+struct zebra_evpn_show {
+	struct vty *vty;
+	json_object *json;
+	struct zebra_vrf *zvrf;
+	bool use_json;
+};
+
+/*
+ * VTEP info
+ *
+ * Right now, this just has each remote VTEP's IP address.
+ */
+struct zebra_vtep {
+	/* Remote IP. */
+	/* NOTE: Can only be IPv4 right now. */
+	struct in_addr vtep_ip;
+	/* Flood mode (one of enum vxlan_flood_control) based on the PMSI
+	 * tunnel type advertised by the remote VTEP
+	 */
+	int flood_control;
+
+	/* Links. */
+	struct zebra_vtep *next;
+	struct zebra_vtep *prev;
+};
+
+/*
+ * VNI hash table
+ *
+ * Contains information pertaining to a VNI:
+ * - the list of remote VTEPs (with this VNI)
+ */
+struct zebra_evpn {
+	/* VNI - key */
+	vni_t vni;
+
+	/* ES flags */
+	uint32_t flags;
+#define ZEVPN_READY_FOR_BGP (1 << 0) /* ready to be sent to BGP */
+
+	/* Flag for advertising gw macip */
+	uint8_t advertise_gw_macip;
+
+	/* Flag for advertising svi macip */
+	uint8_t advertise_svi_macip;
+
+	/* Flag for advertising gw macip */
+	uint8_t advertise_subnet;
+
+	/* Corresponding VxLAN interface. */
+	struct interface *vxlan_if;
+
+	/* Corresponding SVI interface. */
+	struct interface *svi_if;
+
+	/* List of remote VTEPs */
+	struct zebra_vtep *vteps;
+
+	/* Local IP */
+	struct in_addr local_vtep_ip;
+
+	/* PIM-SM MDT group for BUM flooding */
+	struct in_addr mcast_grp;
+
+	/* tenant VRF, if any */
+	vrf_id_t vrf_id;
+
+	/* List of local or remote MAC */
+	struct hash *mac_table;
+
+	/* List of local or remote neighbors (MAC+IP) */
+	struct hash *neigh_table;
+
+	/* RB tree of ES-EVIs */
+	struct zebra_es_evi_rb_head es_evi_rb_tree;
+
+	/* List of local ESs */
+	struct list *local_es_evi_list;
+};
+
+/* for parsing evpn and vni contexts */
+struct zebra_from_svi_param {
+	struct interface *br_if;
+	struct interface *svi_if;
+	struct zebra_if *zif;
+	uint8_t bridge_vlan_aware;
+	vlanid_t vid;
+};
+
+struct interface *zvni_map_to_svi(vlanid_t vid, struct interface *br_if);
+
+static inline struct interface *zevpn_map_to_svi(struct zebra_evpn *zevpn)
+{
+	struct interface *ifp;
+	struct zebra_if *zif = NULL;
+	struct zebra_l2info_vxlan zl2_info;
+
+	ifp = zevpn->vxlan_if;
+	if (!ifp)
+		return NULL;
+	zif = ifp->info;
+	if (!zif)
+		return NULL;
+
+	/* If down or not mapped to a bridge, we're done. */
+	if (!if_is_operative(ifp) || !zif->brslave_info.br_if)
+		return NULL;
+	zl2_info = zif->l2info.vxl;
+	return zvni_map_to_svi(zl2_info.access_vlan, zif->brslave_info.br_if);
+}
+
+int advertise_gw_macip_enabled(struct zebra_evpn *zevpn);
+int advertise_svi_macip_enabled(struct zebra_evpn *zevpn);
+void zebra_evpn_print(struct zebra_evpn *zevpn, void **ctxt);
+void zebra_evpn_print_hash(struct hash_bucket *bucket, void *ctxt[]);
+void zebra_evpn_print_hash_detail(struct hash_bucket *bucket, void *data);
+int zebra_evpn_add_macip_for_intf(struct interface *ifp,
+				  struct zebra_evpn *zevpn);
+int zebra_evpn_del_macip_for_intf(struct interface *ifp,
+				  struct zebra_evpn *zevpn);
+int zebra_evpn_advertise_subnet(struct zebra_evpn *zevpn, struct interface *ifp,
+				int advertise);
+int zebra_evpn_gw_macip_add(struct interface *ifp, struct zebra_evpn *zevpn,
+			    struct ethaddr *macaddr, struct ipaddr *ip);
+int zebra_evpn_gw_macip_del(struct interface *ifp, struct zebra_evpn *zevpn,
+			    struct ipaddr *ip);
+void zebra_evpn_gw_macip_del_for_evpn_hash(struct hash_bucket *bucket,
+					   void *ctxt);
+void zebra_evpn_gw_macip_add_for_evpn_hash(struct hash_bucket *bucket,
+					   void *ctxt);
+void zebra_evpn_svi_macip_del_for_evpn_hash(struct hash_bucket *bucket,
+					    void *ctxt);
+struct zebra_evpn *zebra_evpn_map_vlan(struct interface *ifp,
+				       struct interface *br_if, vlanid_t vid);
+struct zebra_evpn *zebra_evpn_from_svi(struct interface *ifp,
+				       struct interface *br_if);
+struct interface *zebra_evpn_map_to_macvlan(struct interface *br_if,
+					    struct interface *svi_if);
+void zebra_evpn_install_mac_hash(struct hash_bucket *bucket, void *ctxt);
+void zebra_evpn_read_mac_neigh(struct zebra_evpn *zevpn, struct interface *ifp);
+unsigned int zebra_evpn_hash_keymake(const void *p);
+bool zebra_evpn_hash_cmp(const void *p1, const void *p2);
+int zebra_evpn_list_cmp(void *p1, void *p2);
+void *zebra_evpn_alloc(void *p);
+struct zebra_evpn *zebra_evpn_lookup(vni_t vni);
+struct zebra_evpn *zebra_evpn_add(vni_t vni);
+int zebra_evpn_del(struct zebra_evpn *zevpn);
+int zebra_evpn_send_add_to_client(struct zebra_evpn *zevpn);
+int zebra_evpn_send_del_to_client(struct zebra_evpn *zevpn);
+struct zebra_vtep *zebra_evpn_vtep_find(struct zebra_evpn *zevpn,
+					struct in_addr *vtep_ip);
+struct zebra_vtep *zebra_evpn_vtep_add(struct zebra_evpn *zevpn,
+				       struct in_addr *vtep_ip,
+				       int flood_control);
+int zebra_evpn_vtep_del(struct zebra_evpn *zevpn, struct zebra_vtep *zvtep);
+int zebra_evpn_vtep_del_all(struct zebra_evpn *zevpn, int uninstall);
+int zebra_evpn_vtep_install(struct zebra_evpn *zevpn, struct zebra_vtep *zvtep);
+int zebra_evpn_vtep_uninstall(struct zebra_evpn *zevpn,
+			      struct in_addr *vtep_ip);
+void zebra_evpn_handle_flooding_remote_vteps(struct hash_bucket *bucket,
+					     void *zvrf);
+void zebra_evpn_cleanup_all(struct hash_bucket *bucket, void *arg);
+void zebra_evpn_rem_macip_add(vni_t vni, const struct ethaddr *macaddr,
+			      uint16_t ipa_len, const struct ipaddr *ipaddr,
+			      uint8_t flags, uint32_t seq,
+			      struct in_addr vtep_ip, const esi_t *esi);
+void zebra_evpn_rem_macip_del(vni_t vni, const struct ethaddr *macaddr,
+			      uint16_t ipa_len, const struct ipaddr *ipaddr,
+			      struct in_addr vtep_ip);
+void zebra_evpn_cfg_cleanup(struct hash_bucket *bucket, void *ctxt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_ZEBRA_EVPN_H */