ospf6d: Add CLI and logic for default-information originate command

Signed-off-by: Yash Ranjan <ranjany@vmware.com>

1 files changed, 176 insertions, 1 deletions

diff --git a/ospf6d/ospf6_asbr.c b/ospf6d/ospf6_asbr.c
index 3497b2665..62ce74718 100644
--- a/ospf6d/ospf6_asbr.c
+++ b/ospf6d/ospf6_asbr.c
@@ -57,6 +57,10 @@ static void ospf6_asbr_redistribute_set(int type, vrf_id_t vrf_id);
 static void ospf6_asbr_redistribute_unset(struct ospf6 *ospf6,
 					  struct ospf6_redist *red, int type);
 
+#ifndef VTYSH_EXTRACT_PL
+#include "ospf6d/ospf6_asbr_clippy.c"
+#endif
+
 unsigned char conf_debug_ospf6_asbr = 0;
 
 #define ZROUTE_NAME(x) zebra_route_string(x)
@@ -1150,7 +1154,8 @@ void ospf6_asbr_redistribute_add(int type, ifindex_t ifindex,
 	if (!red)
 		return;
 
-	if (!ospf6_zebra_is_redistribute(type, ospf6->vrf_id))
+	if ((type != DEFAULT_ROUTE)
+	    && !ospf6_zebra_is_redistribute(type, ospf6->vrf_id))
 		return;
 
 	memset(&troute, 0, sizeof(troute));
@@ -1533,6 +1538,140 @@ static void ospf6_redistribute_show_config(struct vty *vty, struct ospf6 *ospf6,
 		vty_out(vty, "Total %d routes\n", total);
 }
 
+static void ospf6_redistribute_default_set(struct ospf6 *ospf6, int originate)
+{
+	struct prefix_ipv6 p = {};
+	struct in6_addr nexthop = {};
+	int cur_originate = ospf6->default_originate;
+
+	p.family = AF_INET6;
+	p.prefixlen = 0;
+
+	ospf6->default_originate = originate;
+
+	switch (cur_originate) {
+	case DEFAULT_ORIGINATE_NONE:
+		break;
+	case DEFAULT_ORIGINATE_ZEBRA:
+		zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE,
+					     zclient, AFI_IP6, ospf6->vrf_id);
+		ospf6_asbr_redistribute_remove(DEFAULT_ROUTE, 0,
+					       (struct prefix *)&p, ospf6);
+
+		break;
+	case DEFAULT_ORIGINATE_ALWAYS:
+		ospf6_asbr_redistribute_remove(DEFAULT_ROUTE, 0,
+					       (struct prefix *)&p, ospf6);
+		break;
+	}
+
+	switch (originate) {
+	case DEFAULT_ORIGINATE_NONE:
+		break;
+	case DEFAULT_ORIGINATE_ZEBRA:
+		zclient_redistribute_default(ZEBRA_REDISTRIBUTE_DEFAULT_ADD,
+					     zclient, AFI_IP6, ospf6->vrf_id);
+
+		break;
+	case DEFAULT_ORIGINATE_ALWAYS:
+		ospf6_asbr_redistribute_add(DEFAULT_ROUTE, 0,
+					    (struct prefix *)&p, 0, &nexthop, 0,
+					    ospf6);
+		break;
+	}
+}
+
+/* Default Route originate. */
+DEFPY (ospf6_default_route_originate,
+       ospf6_default_route_originate_cmd,
+       "default-information originate [{always$always|metric (0-16777214)$mval|metric-type (1-2)$mtype|route-map WORD$rtmap}]",
+       "Control distribution of default route\n"
+       "Distribute a default route\n"
+       "Always advertise default route\n"
+       "OSPFv3 default metric\n"
+       "OSPFv3 metric\n"
+       "OSPFv3 metric type for default routes\n"
+       "Set OSPFv3 External Type 1/2 metrics\n"
+       "Route map reference\n"
+       "Pointer to route-map entries\n")
+{
+	int default_originate = DEFAULT_ORIGINATE_ZEBRA;
+	struct ospf6_redist *red;
+	bool sameRtmap = false;
+
+	VTY_DECLVAR_CONTEXT(ospf6, ospf6);
+
+	int cur_originate = ospf6->default_originate;
+
+	OSPF6_CMD_CHECK_RUNNING(ospf6);
+
+	red = ospf6_redist_add(ospf6, DEFAULT_ROUTE, 0);
+
+	if (always != NULL)
+		default_originate = DEFAULT_ORIGINATE_ALWAYS;
+
+	if (mval_str == NULL)
+		mval = -1;
+
+	if (mtype_str == NULL)
+		mtype = -1;
+
+	/* To check ,if user is providing same route map */
+	if ((rtmap == ROUTEMAP_NAME(red))
+	    || (rtmap && ROUTEMAP_NAME(red)
+		&& (strcmp(rtmap, ROUTEMAP_NAME(red)) == 0)))
+		sameRtmap = true;
+
+	/* Don't allow if the same lsa is aleardy originated. */
+	if ((sameRtmap) && (red->dmetric.type == mtype)
+	    && (red->dmetric.value == mval)
+	    && (cur_originate == default_originate))
+		return CMD_SUCCESS;
+
+	/* Updating Metric details */
+	red->dmetric.type = mtype;
+	red->dmetric.value = mval;
+
+	/* updating route map details */
+	if (rtmap)
+		ospf6_asbr_routemap_set(red, rtmap);
+	else
+		ospf6_asbr_routemap_unset(red);
+
+	ospf6_redistribute_default_set(ospf6, default_originate);
+	return CMD_SUCCESS;
+}
+
+DEFPY (no_ospf6_default_information_originate,
+       no_ospf6_default_information_originate_cmd,
+       "no default-information originate [{always|metric (0-16777214)|metric-type (1-2)|route-map WORD}]",
+       NO_STR
+       "Control distribution of default information\n"
+       "Distribute a default route\n"
+       "Always advertise default route\n"
+       "OSPFv3 default metric\n"
+       "OSPFv3 metric\n"
+       "OSPFv3 metric type for default routes\n"
+       "Set OSPFv3 External Type 1/2 metrics\n"
+       "Route map reference\n"
+       "Pointer to route-map entries\n")
+{
+	struct ospf6_redist *red;
+
+	VTY_DECLVAR_CONTEXT(ospf6, ospf6);
+
+	OSPF6_CMD_CHECK_RUNNING(ospf6);
+
+	red = ospf6_redist_lookup(ospf6, DEFAULT_ROUTE, 0);
+	if (!red)
+		return CMD_SUCCESS;
+
+	ospf6_asbr_routemap_unset(red);
+	ospf6_redist_del(ospf6, red, DEFAULT_ROUTE);
+
+	ospf6_redistribute_default_set(ospf6, DEFAULT_ORIGINATE_NONE);
+	return CMD_SUCCESS;
+}
 
 /* Routemap Functions */
 static enum route_map_cmd_result_t
@@ -2115,6 +2254,9 @@ void ospf6_asbr_init(void)
 
 	install_element(VIEW_NODE, &show_ipv6_ospf6_redistribute_cmd);
 
+	install_element(OSPF6_NODE, &ospf6_default_route_originate_cmd);
+	install_element(OSPF6_NODE,
+			&no_ospf6_default_information_originate_cmd);
 	install_element(OSPF6_NODE, &ospf6_redistribute_cmd);
 	install_element(OSPF6_NODE, &ospf6_redistribute_routemap_cmd);
 	install_element(OSPF6_NODE, &no_ospf6_redistribute_cmd);
@@ -2176,6 +2318,39 @@ int config_write_ospf6_debug_asbr(struct vty *vty)
 	return 0;
 }
 
+int ospf6_distribute_config_write(struct vty *vty, struct ospf6 *ospf6)
+{
+	struct ospf6_redist *red;
+
+	if (ospf6) {
+		/* default-route print. */
+		if (ospf6->default_originate != DEFAULT_ORIGINATE_NONE) {
+			vty_out(vty, " default-information originate");
+			if (ospf6->default_originate
+			    == DEFAULT_ORIGINATE_ALWAYS)
+				vty_out(vty, " always");
+
+			red = ospf6_redist_lookup(ospf6, DEFAULT_ROUTE, 0);
+			if (red) {
+				if (red->dmetric.value >= 0)
+					vty_out(vty, " metric %d",
+						red->dmetric.value);
+
+				if (red->dmetric.type >= 0)
+					vty_out(vty, " metric-type %d",
+						red->dmetric.type);
+
+				if (ROUTEMAP_NAME(red))
+					vty_out(vty, " route-map %s",
+						ROUTEMAP_NAME(red));
+			}
+
+			vty_out(vty, "\n");
+		}
+	}
+	return 0;
+}
+
 void install_element_ospf6_debug_asbr(void)
 {
 	install_element(ENABLE_NODE, &debug_ospf6_asbr_cmd);