[vnetorch]: Set default VxLAN encap TTL value (#980)

Signed-off-by: Volodymyr Samotiy <[email protected]>

Author: Volodymyr Samotiy

orchagent/vnetorch.cpp

@@ -465,9 +465,10 @@ VnetBridgeInfo VNetBitmapObject::getBridgeInfoByVni(uint32_t vni, string tunnelN
     vector<sai_attribute_t> bpt_attrs;
     auto* vxlan_orch = gDirectory.get<VxlanTunnelOrch*>();
     auto *tunnel = vxlan_orch->getVxlanTunnel(tunnelName);
+
     if (!tunnel->isActive())
     {
-        tunnel->createTunnel(MAP_T::BRIDGE_TO_VNI, MAP_T::VNI_TO_BRIDGE);
+        tunnel->createTunnel(MAP_T::BRIDGE_TO_VNI, MAP_T::VNI_TO_BRIDGE, VXLAN_ENCAP_TTL);
     }
 
     attr.id = SAI_BRIDGE_PORT_ATTR_TYPE;
@@ -1448,7 +1449,7 @@ bool VNetOrch::addOperation(const Request& request)
 
             VNetVrfObject *vrf_obj = dynamic_cast<VNetVrfObject*>(obj.get());
             if (!vxlan_orch->createVxlanTunnelMap(tunnel, TUNNEL_MAP_T_VIRTUAL_ROUTER, vni,
-                                                  vrf_obj->getEncapMapId(), vrf_obj->getDecapMapId()))
+                                                  vrf_obj->getEncapMapId(), vrf_obj->getDecapMapId(), VXLAN_ENCAP_TTL))
             {
                 SWSS_LOG_ERROR("VNET '%s', tunnel '%s', map create failed",
                                 vnet_name.c_str(), tunnel.c_str());

orchagent/vnetorch.h

@@ -14,6 +14,7 @@
 #define VNET_BITMAP_SIZE 32
 #define VNET_TUNNEL_SIZE 512
 #define VNET_NEIGHBOR_MAX 0xffff
+#define VXLAN_ENCAP_TTL 128
 
 extern sai_object_id_t gVirtualRouterId;
 

orchagent/vxlanorch.cpp

@@ -228,7 +228,8 @@ create_tunnel(
     sai_object_id_t tunnel_encap_id,
     sai_object_id_t tunnel_decap_id,
     sai_ip_address_t *src_ip,
-    sai_object_id_t underlay_rif)
+    sai_object_id_t underlay_rif,
+    sai_uint8_t encap_ttl=0)
 {
     sai_attribute_t attr;
     std::vector<sai_attribute_t> tunnel_attrs;
@@ -264,6 +265,17 @@ create_tunnel(
         tunnel_attrs.push_back(attr);
     }
 
+    if (encap_ttl != 0)
+    {
+        attr.id = SAI_TUNNEL_ATTR_ENCAP_TTL_MODE;
+        attr.value.s32 = SAI_TUNNEL_TTL_MODE_PIPE_MODEL;
+        tunnel_attrs.push_back(attr);
+
+        attr.id = SAI_TUNNEL_ATTR_ENCAP_TTL_VAL;
+        attr.value.u8 = encap_ttl;
+        tunnel_attrs.push_back(attr);
+    }
+
     sai_object_id_t tunnel_id;
     sai_status_t status = sai_tunnel_api->create_tunnel(
                                 &tunnel_id,
@@ -358,7 +370,7 @@ remove_tunnel_termination(sai_object_id_t term_table_id)
     }
 }
 
-bool VxlanTunnel::createTunnel(MAP_T encap, MAP_T decap)
+bool VxlanTunnel::createTunnel(MAP_T encap, MAP_T decap, uint8_t encap_ttl)
 {
     try
     {
@@ -378,7 +390,7 @@ bool VxlanTunnel::createTunnel(MAP_T encap, MAP_T decap)
             ip = &ips;
         }
 
-        ids_.tunnel_id = create_tunnel(ids_.tunnel_encap_id, ids_.tunnel_decap_id, ip, gUnderlayIfId);
+        ids_.tunnel_id = create_tunnel(ids_.tunnel_encap_id, ids_.tunnel_decap_id, ip, gUnderlayIfId, encap_ttl);
 
         ip = nullptr;
         if (!dst_ip_.isZero())
@@ -562,7 +574,7 @@ VxlanTunnelOrch::removeNextHopTunnel(string tunnelName, IpAddress& ipAddr, MacAd
 }
 
 bool VxlanTunnelOrch::createVxlanTunnelMap(string tunnelName, tunnel_map_type_t map, uint32_t vni,
-                                           sai_object_id_t encap, sai_object_id_t decap)
+                                           sai_object_id_t encap, sai_object_id_t decap, uint8_t encap_ttl)
 {
     SWSS_LOG_ENTER();
 
@@ -578,11 +590,11 @@ bool VxlanTunnelOrch::createVxlanTunnelMap(string tunnelName, tunnel_map_type_t
     {
         if (map == TUNNEL_MAP_T_VIRTUAL_ROUTER)
         {
-            tunnel_obj->createTunnel(MAP_T::VRID_TO_VNI, MAP_T::VNI_TO_VRID);
+            tunnel_obj->createTunnel(MAP_T::VRID_TO_VNI, MAP_T::VNI_TO_VRID, encap_ttl);
         }
         else if (map == TUNNEL_MAP_T_BRIDGE)
         {
-            tunnel_obj->createTunnel(MAP_T::BRIDGE_TO_VNI, MAP_T::VNI_TO_BRIDGE);
+            tunnel_obj->createTunnel(MAP_T::BRIDGE_TO_VNI, MAP_T::VNI_TO_BRIDGE, encap_ttl);
         }
     }
 

orchagent/vxlanorch.h

@@ -82,7 +82,7 @@ class VxlanTunnel
         return active_;
     }
 
-    bool createTunnel(MAP_T encap, MAP_T decap);
+    bool createTunnel(MAP_T encap, MAP_T decap, uint8_t encap_ttl=0);
     sai_object_id_t addEncapMapperEntry(sai_object_id_t obj, uint32_t vni);
     sai_object_id_t addDecapMapperEntry(sai_object_id_t obj, uint32_t vni);
 
@@ -172,7 +172,7 @@ class VxlanTunnelOrch : public Orch2
     }
 
     bool createVxlanTunnelMap(string tunnelName, tunnel_map_type_t mapType, uint32_t vni,
-                              sai_object_id_t encap, sai_object_id_t decap);
+                              sai_object_id_t encap, sai_object_id_t decap, uint8_t encap_ttl=0);
 
     bool removeVxlanTunnelMap(string tunnelName, uint32_t vni);