[orchagent]: Get bridge port ID from orchagent cache instead of SAI API (sonic-net#2657)

* [fdborch]: Get bridge port ID from cache instead

Author: theasianpianist

orchagent/fdborch.cpp

@@ -636,29 +636,23 @@ bool FdbOrch::getPort(const MacAddress& mac, uint16_t vlan, Port& port)
         return false;
     }
 
-    sai_fdb_entry_t entry;
-    entry.switch_id = gSwitchId;
-    memcpy(entry.mac_address, mac.getMac(), sizeof(sai_mac_t));
+    FdbEntry entry;
+    entry.mac = mac;
     entry.bv_id = port.m_vlan_info.vlan_oid;
 
-    sai_attribute_t attr;
-    attr.id = SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID;
-
-    sai_status_t status = sai_fdb_api->get_fdb_entry_attribute(&entry, 1, &attr);
-    if (status != SAI_STATUS_SUCCESS)
+    auto it = m_entries.find(entry);
+    if (it == m_entries.end())
     {
-        SWSS_LOG_ERROR("Failed to get bridge port ID for FDB entry %s, rv:%d",
-            mac.to_string().c_str(), status);
-        task_process_status handle_status = handleSaiGetStatus(SAI_API_FDB, status);
-        if (handle_status != task_process_status::task_success)
-        {
-            return false;
-        }
+        // This message is now expected in many cases since orchagent will process events such as
+        // learning new neighbor entries prior to updating the m_entries FDB cache.
+        SWSS_LOG_INFO("Failed to get cached bridge port ID for FDB entry %s",
+            mac.to_string().c_str());
+        return false;
     }
 
-    if (!m_portsOrch->getPortByBridgePortId(attr.value.oid, port))
+    if (!m_portsOrch->getPortByBridgePortId(it->second.bridge_port_id, port))
     {
-        SWSS_LOG_ERROR("Failed to get port by bridge port ID 0x%" PRIx64, attr.value.oid);
+        SWSS_LOG_ERROR("Failed to get port by bridge port ID 0x%" PRIx64, it->second.bridge_port_id);
         return false;
     }
 

orchagent/muxorch.cpp

@@ -534,6 +534,8 @@ bool MuxCable::isIpInSubnet(IpAddress ip)
 
 bool MuxCable::nbrHandler(bool enable, bool update_rt)
 {
+    SWSS_LOG_NOTICE("Processing neighbors for mux %s, enable %d, state %d",
+                     mux_name_.c_str(), enable, state_);
     if (enable)
     {
         return nbr_handler_->enable(update_rt);
@@ -553,6 +555,8 @@ bool MuxCable::nbrHandler(bool enable, bool update_rt)
 
 void MuxCable::updateNeighbor(NextHopKey nh, bool add)
 {
+    SWSS_LOG_NOTICE("Processing update on neighbor %s for mux %s, add %d, state %d",
+                     nh.ip_address.to_string().c_str(), mux_name_.c_str(), add, state_);
     sai_object_id_t tnh = mux_orch_->getNextHopTunnelId(MUX_TUNNEL, peer_ip4_);
     nbr_handler_->update(nh, tnh, add, state_);
     if (add)