[frrcfgd] Support configuring source IPv6 for routes

dockers/docker-fpm-frr/frr/zebra/zebra.interfaces.conf.j2

@@ -9,6 +9,31 @@ exit
 {%   endfor %}
 {%  endif %}
 {% endblock vrf %}
+{% block setsrc %}
+{%  if BGP_GLOBALS is defined and BGP_GLOBALS|length > 0 %}
+{%   for vrf, bgp_sess in BGP_GLOBALS.items() %}
+{%    if 'route_map' in bgp_sess %}
+!
+vrf {{ vrf }}
+ ip protocol bgp route-map {{ bgp_sess['route_map'] }}
+{%    endif %}
+{%    if 'route_map_ipv6' in bgp_sess %}
+!
+vrf {{ vrf }}
+ ipv6 protocol bgp route-map {{ bgp_sess['route_map_ipv6'] }}
+{%    endif %}
+{%   endfor %}
+{%  endif %}
+{%  if ROUTE_MAP is defined and ROUTE_MAP|length > 0 %}
+{%   for rm_key, rm_val in ROUTE_MAP.items() %}
+{%    if 'route_operation' in rm_val and 'set_src' in rm_val %}
+!
+route-map {{rm_key[0]}} {{rm_val['route_operation']}} {{rm_key[1]}}
+ set src {{rm_val['set_src']}}
+{%    endif %}
+{%   endfor %}
+{%  endif %}
+{% endblock setsrc %}
 !
 {% block interfaces %}
 ! Enable nht through default route

src/sonic-frr-mgmt-framework/frrcfgd/frrcfgd.py

@@ -1754,7 +1754,9 @@ class BGPConfigDaemon:
                       ('confed_id',                                     '{no:no-prefix}bgp confederation identifier {}'),
                       ('confed_peers',                                  '{no:no-prefix}bgp confederation peers {}', hdl_confed_peers),
                       (['keepalive', 'holdtime'],                       '{no:no-prefix}timers bgp {} {}'),
-                      (['max_med_admin', '+max_med_admin_val'],         '{no:no-prefix}bgp max-med administrative {}', ['true', 'false'])
+                      (['max_med_admin', '+max_med_admin_val'],         '{no:no-prefix}bgp max-med administrative {}', ['true', 'false']),
+                      ('route_map',                                     '[zebra]{no:no-prefix}ip protocol bgp route-map {}'),
+                      ('route_map_ipv6',                                '[zebra]{no:no-prefix}ipv6 protocol bgp route-map {}'),
     ]
 
     global_af_key_map = [(['ebgp_route_distance',
@@ -1877,6 +1879,7 @@ class BGPConfigDaemon:
                          ('call_route_map',                 '{no:no-prefix}call {:enable-only}'),
                          ('set_origin',                     '[bgpd]{no:no-prefix}set origin {:tolower}'),
                          ('set_local_pref',                 '[bgpd]{no:no-prefix}set local-preference {}'),
+                         ('set_src',                        '[zebra]{no:no-prefix}set src {}'),
                          ('set_next_hop',                   '{no:no-prefix}set ip next-hop {}'),
                          ('set_ipv6_next_hop_global',       '[bgpd]{no:no-prefix}set ipv6 next-hop global {}'),
                          ('set_ipv6_next_hop_prefer_global', '[bgpd]{no:no-prefix}set ipv6 next-hop prefer-global', ['true', 'false']),
@@ -2642,6 +2645,13 @@ def __update_bgp(self, data_list):
                     if local_asn is None:
                         syslog.syslog(syslog.LOG_ERR, 'local ASN for VRF %s was not configured' % vrf)
                         continue
+                    for route_map_key in ['route_map', 'route_map_ipv6']:
+                        if route_map_key in data:
+                            # Route maps are configured in a different context, so they need a different cmd_prefix
+                            cmd_prefix = ['configure terminal', 'vrf {}'.format(vrf)]
+                            if not key_map.run_command(self, table, {route_map_key: data[route_map_key]}, cmd_prefix):
+                                syslog.syslog(syslog.LOG_ERR, 'failed running BGP global config command')
+                            del data[route_map_key]
                     cmd_prefix = ['configure terminal', 'router bgp {} vrf {}'.format(local_asn, vrf)]
                     if not key_map.run_command(self, table, data, cmd_prefix):
                         syslog.syslog(syslog.LOG_ERR, 'failed running BGP global config command')

src/sonic-yang-models/tests/yang_model_tests/tests/bgp.json

@@ -2,6 +2,9 @@
     "BGP_GLOBAL_VALID": {
         "desc": "Configure BGP global table."
     },
+    "BGP_GLOBAL_ROUTE_MAP_VALID": {
+        "desc": "Configure BGP global table with route map."
+    },
     "BGP_NEIGHBOR_ALL_VALID": {
         "desc": "Configure BGP neighbor table."
     },

src/sonic-yang-models/tests/yang_model_tests/tests_config/bgp.json

@@ -82,6 +82,36 @@
         }
     },
 
+    "BGP_GLOBAL_ROUTE_MAP_VALID": {
+        "sonic-vrf:sonic-vrf":{
+            "sonic-vrf:VRF": {
+                "VRF_LIST": [
+                {
+                    "name":"Vrf1"
+                }
+                ]
+            }
+        },
+        "sonic-bgp-global:sonic-bgp-global": {
+            "sonic-bgp-global:BGP_GLOBALS": {
+                "BGP_GLOBALS_LIST": [
+                {
+                    "vrf_name":"default",
+                    "local_asn": 65001,
+                    "route_map": "RM_SET_SRC",
+                    "route_map_ipv6": "RM_SET_SRC6"
+                },
+                {
+                    "vrf_name":"Vrf1",
+                    "local_asn": 65001,
+                    "route_map": "RM_SET_SRC",
+                    "route_map_ipv6": "RM_SET_SRC6"
+                }
+                ]
+            }
+        }
+    },
+
     "BGP_NEIGHBOR_ALL_VALID": {
         "sonic-port:sonic-port": {
             "sonic-port:PORT": {

src/sonic-yang-models/tests/yang_model_tests/tests_config/route_filter.json

@@ -180,6 +180,7 @@
                     "set_metric_action": "METRIC_SET_VALUE",
                     "set_metric": 50,
                     "set_next_hop": "10.10.10.10",
+                    "set_src": "10.10.10.10",
                     "set_ipv6_next_hop_global": "1000::1",
                     "set_ipv6_next_hop_prefer_global": true,
                     "set_repeat_asn": 5,

src/sonic-yang-models/yang-models/sonic-bgp-global.yang

@@ -317,6 +317,16 @@ module sonic-bgp-global {
                     type uint16;
                     description "Hold time";
                 }
+
+                leaf route_map {
+                    type string;
+                    description "IPv4 route map to apply to BGP-learned routes in Zebra";
+                }
+
+                leaf route_map_ipv6 {
+                    type string;
+                    description "IPv6 route map to apply to BGP-learned routes in Zebra";
+                }
             }
         }
 

src/sonic-yang-models/yang-models/sonic-route-map.yang

@@ -294,6 +294,11 @@ module sonic-route-map {
                     description "Set metric value";
                 }
 
+                leaf set_src{
+                    type string;
+                    description "Set route source address";
+                }
+
                 leaf set_next_hop{
                     type string;
                     description "Set IP nexthop";