zebra: implement zebra route map northbound

Add skeleton code for zebra northbound, but implement route map
commands.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

yang/subdir.am

@@ -21,10 +21,12 @@ EXTRA_DIST += yang/embedmodel.py
 
 dist_yangmodels_DATA += yang/frr-filter.yang
 dist_yangmodels_DATA += yang/frr-module-translator.yang
+dist_yangmodels_DATA += yang/frr-nexthop.yang
 dist_yangmodels_DATA += yang/frr-test-module.yang
 dist_yangmodels_DATA += yang/frr-interface.yang
 dist_yangmodels_DATA += yang/frr-route-map.yang
 dist_yangmodels_DATA += yang/frr-route-types.yang
+dist_yangmodels_DATA += yang/frr-zebra.yang
 dist_yangmodels_DATA += yang/ietf/ietf-routing-types.yang
 
 if BFDD

zebra/main.c

@@ -245,6 +245,7 @@ struct quagga_signal_t zebra_signals[] = {
 static const struct frr_yang_module_info *const zebra_yang_modules[] = {
 	&frr_interface_info,
 	&frr_route_map_info,
+	&frr_zebra_info,
 };
 
 FRR_DAEMON_INFO(

zebra/subdir.am

@@ -75,6 +75,7 @@ zebra_zebra_SOURCES = \
 	zebra/zebra_mlag.c \
 	zebra/zebra_mlag_vty.c \
 	zebra/zebra_l2.c \
+	zebra/zebra_northbound.c \
 	zebra/zebra_memory.c \
 	zebra/zebra_dplane.c \
 	zebra/zebra_mpls.c \
@@ -191,5 +192,10 @@ zebra_zebra_fpm_la_SOURCES += zebra/zebra_fpm_dt.c
 endif
 endif
 
+nodist_zebra_zebra_SOURCES = \
+	yang/frr-nexthop.yang.c \
+	yang/frr-zebra.yang.c \
+	# end
+
 zebra_zebra_cumulus_mlag_la_SOURCES = zebra/zebra_mlag_private.c
 zebra_zebra_cumulus_mlag_la_LDFLAGS = -avoid-version -module -shared -export-dynamic

zebra/zebra_router.h

@@ -218,6 +218,9 @@ extern void multicast_mode_ipv4_set(enum multicast_mode mode);
 
 extern enum multicast_mode multicast_mode_ipv4_get(void);
 
+/* zebra_northbound.c */
+extern const struct frr_yang_module_info frr_zebra_info;
+
 #ifdef __cplusplus
 }
 #endif