1 files changed, 73 insertions, 0 deletions
diff --git a/pimd/pim_nht.h b/pimd/pim_nht.h
new file mode 100644
index 0000000..5a54e1c
--- /dev/null
+++ b/pimd/pim_nht.h
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * PIM for Quagga
+ * Copyright (C) 2017 Cumulus Networks, Inc.
+ * Chirag Shah
+ */
+#ifndef PIM_NHT_H
+#define PIM_NHT_H
+
+#include "prefix.h"
+#include <zebra.h>
+#include "zclient.h"
+#include "vrf.h"
+
+#include "pimd.h"
+#include "pim_rp.h"
+#include "pim_rpf.h"
+
+/* PIM nexthop cache value structure. */
+struct pim_nexthop_cache {
+	struct pim_rpf rpf;
+	/* IGP route's metric. */
+	uint32_t metric;
+	uint32_t distance;
+	/* Nexthop number and nexthop linked list. */
+	uint8_t nexthop_num;
+	struct nexthop *nexthop;
+	int64_t last_update;
+	uint16_t flags;
+#define PIM_NEXTHOP_VALID             (1 << 0)
+#define PIM_NEXTHOP_ANSWER_RECEIVED   (1 << 1)
+
+	struct list *rp_list;
+	struct hash *upstream_hash;
+
+	/* bsr_count won't currently go above 1 as we only have global_scope,
+	 * but if anyone adds scope support multiple scopes may NHT-track the
+	 * same BSR
+	 */
+	uint32_t bsr_count;
+};
+
+struct pnc_hash_walk_data {
+	struct pim_instance *pim;
+	struct interface *ifp;
+};
+
+int pim_parse_nexthop_update(ZAPI_CALLBACK_ARGS);
+int pim_find_or_track_nexthop(struct pim_instance *pim, pim_addr addr,
+			      struct pim_upstream *up, struct rp_info *rp,
+			      struct pim_nexthop_cache *out_pnc);
+void pim_delete_tracked_nexthop(struct pim_instance *pim, pim_addr addr,
+				struct pim_upstream *up, struct rp_info *rp);
+struct pim_nexthop_cache *pim_nexthop_cache_find(struct pim_instance *pim,
+						 struct pim_rpf *rpf);
+uint32_t pim_compute_ecmp_hash(struct prefix *src, struct prefix *grp);
+int pim_ecmp_nexthop_lookup(struct pim_instance *pim,
+			    struct pim_nexthop *nexthop, pim_addr src,
+			    struct prefix *grp, int neighbor_needed);
+void pim_sendmsg_zebra_rnh(struct pim_instance *pim, struct zclient *zclient,
+			   struct pim_nexthop_cache *pnc, int command);
+int pim_ecmp_fib_lookup_if_vif_index(struct pim_instance *pim, pim_addr src,
+				     struct prefix *grp);
+void pim_rp_nexthop_del(struct rp_info *rp_info);
+
+/* for RPF check on BSM message receipt */
+void pim_nht_bsr_add(struct pim_instance *pim, pim_addr bsr_addr);
+void pim_nht_bsr_del(struct pim_instance *pim, pim_addr bsr_addr);
+/* RPF(bsr_addr) == src_ip%src_ifp? */
+bool pim_nht_bsr_rpf_check(struct pim_instance *pim, pim_addr bsr_addr,
+			   struct interface *src_ifp, pim_addr src_ip);
+void pim_upstream_nh_if_update(struct pim_instance *pim, struct interface *ifp);
+#endif