sharpd: add abilty to send a nhg to zebra

Modify the sharpd program to have the ability to pass down
a NHG and then operate on it for route installation.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/sharpd/sharp_nht.c b/sharpd/sharp_nht.c
index 174f186863..4148792900 100644
--- a/sharpd/sharp_nht.c
+++ b/sharpd/sharp_nht.c
@@ -25,11 +25,15 @@
 #include "nexthop.h"
 #include "nexthop_group.h"
 #include "vty.h"
+#include "typesafe.h"
+#include "zclient.h"
 
 #include "sharp_nht.h"
 #include "sharp_globals.h"
+#include "sharp_zebra.h"
 
 DEFINE_MTYPE_STATIC(SHARPD, NH_TRACKER, "Nexthop Tracker")
+DEFINE_MTYPE_STATIC(SHARPD, NHG, "Nexthop Group")
 
 struct sharp_nh_tracker *sharp_nh_tracker_get(struct prefix *p)
 {
@@ -65,3 +69,109 @@ void sharp_nh_tracker_dump(struct vty *vty)
 			nht->updates);
 	}
 }
+
+PREDECL_RBTREE_UNIQ(sharp_nhg_rb);
+
+struct sharp_nhg {
+	struct sharp_nhg_rb_item mylistitem;
+
+	uint32_t id;
+
+	char name[256];
+};
+
+static uint32_t nhg_id;
+
+static uint32_t sharp_get_next_nhid(void)
+{
+	zlog_debug("Id assigned: %u", nhg_id + 1);
+	return nhg_id++;
+}
+
+struct sharp_nhg_rb_head nhg_head;
+
+static int sharp_nhg_compare_func(const struct sharp_nhg *a,
+				  const struct sharp_nhg *b)
+{
+	return strncmp(a->name, b->name, strlen(a->name));
+}
+
+DECLARE_RBTREE_UNIQ(sharp_nhg_rb, struct sharp_nhg, mylistitem,
+		    sharp_nhg_compare_func);
+
+static void sharp_nhgroup_add_cb(const char *name)
+{
+	struct sharp_nhg *snhg;
+
+	snhg = XCALLOC(MTYPE_NHG, sizeof(*snhg));
+	snhg->id = sharp_get_next_nhid();
+	strncpy(snhg->name, name, sizeof(snhg->name));
+
+	sharp_nhg_rb_add(&nhg_head, snhg);
+	return;
+}
+
+static void sharp_nhgroup_add_nexthop_cb(const struct nexthop_group_cmd *nhgc,
+					 const struct nexthop *nhop)
+{
+	struct sharp_nhg lookup;
+	struct sharp_nhg *snhg;
+
+	strncpy(lookup.name, nhgc->name, sizeof(lookup.name));
+	snhg = sharp_nhg_rb_find(&nhg_head, &lookup);
+
+	nhg_add(snhg->id, &nhgc->nhg);
+	return;
+}
+
+static void sharp_nhgroup_del_nexthop_cb(const struct nexthop_group_cmd *nhgc,
+					 const struct nexthop *nhop)
+{
+	struct sharp_nhg lookup;
+	struct sharp_nhg *snhg;
+
+	strncpy(lookup.name, nhgc->name, sizeof(lookup.name));
+	snhg = sharp_nhg_rb_find(&nhg_head, &lookup);
+
+	nhg_add(snhg->id, &nhgc->nhg);
+	return;
+}
+
+static void sharp_nhgroup_delete_cb(const char *name)
+{
+	struct sharp_nhg lookup;
+	struct sharp_nhg *snhg;
+
+	strncpy(lookup.name, name, sizeof(lookup.name));
+	snhg = sharp_nhg_rb_find(&nhg_head, &lookup);
+	if (!snhg)
+		return;
+
+	nhg_del(snhg->id);
+	sharp_nhg_rb_del(&nhg_head, snhg);
+	XFREE(MTYPE_NHG, snhg);
+	return;
+}
+
+uint32_t sharp_nhgroup_get_id(const char *name)
+{
+	struct sharp_nhg lookup;
+	struct sharp_nhg *snhg;
+
+	strncpy(lookup.name, name, sizeof(lookup.name));
+	snhg = sharp_nhg_rb_find(&nhg_head, &lookup);
+	if (!snhg)
+		return 0;
+
+	return snhg->id;
+}
+
+void sharp_nhgroup_init(void)
+{
+	sharp_nhg_rb_init(&nhg_head);
+	nhg_id = zclient_get_nhg_start(ZEBRA_ROUTE_SHARP);
+
+	nexthop_group_init(sharp_nhgroup_add_cb, sharp_nhgroup_add_nexthop_cb,
+			   sharp_nhgroup_del_nexthop_cb,
+			   sharp_nhgroup_delete_cb);
+}