VxLAN Tunnel Counters and Rates implementation (sonic-net#1859)

* Tunnel stats support

Author: dgsudharsan

orchagent/Makefile.am

@@ -23,7 +23,8 @@ dist_swss_DATA = \
 		 watermark_queue.lua \
 		 watermark_pg.lua \
 		 watermark_bufferpool.lua \
-		 lagids.lua
+		 lagids.lua \
+		 tunnel_rates.lua
 
 bin_PROGRAMS = orchagent routeresync orchagent_restart_check
 

orchagent/flex_counter/flex_counter_manager.cpp

@@ -39,17 +39,56 @@ const unordered_map<CounterType, string> FlexCounterManager::counter_id_field_lo
     { CounterType::PORT,            PORT_COUNTER_ID_LIST },
     { CounterType::QUEUE,           QUEUE_COUNTER_ID_LIST },
     { CounterType::MACSEC_SA_ATTR,  MACSEC_SA_ATTR_ID_LIST },
+    { CounterType::TUNNEL,          TUNNEL_COUNTER_ID_LIST },
 };
 
+FlexManagerDirectory g_FlexManagerDirectory;
+
+FlexCounterManager *FlexManagerDirectory::createFlexCounterManager(const string& group_name,
+                                                                   const StatsMode stats_mode,
+                                                                   const uint polling_interval,
+                                                                   const bool enabled,
+                                                                   FieldValueTuple fv_plugin)
+{
+    if (m_managers.find(group_name) != m_managers.end())
+    {
+        if (stats_mode != m_managers[group_name]->getStatsMode())
+        {
+            SWSS_LOG_ERROR("Stats mode mismatch with already created flex counter manager %s", 
+                          group_name.c_str());
+            return NULL;
+        }
+        if (polling_interval != m_managers[group_name]->getPollingInterval())
+        {
+            SWSS_LOG_ERROR("Polling interval mismatch with already created flex counter manager %s", 
+                          group_name.c_str());
+            return NULL;
+        }
+        if (enabled != m_managers[group_name]->getEnabled())
+        {
+            SWSS_LOG_ERROR("Enabled field mismatch with already created flex counter manager %s", 
+                          group_name.c_str());
+            return NULL;
+        }
+        return m_managers[group_name];
+    }
+    FlexCounterManager *fc_manager = new FlexCounterManager(group_name, stats_mode, polling_interval,
+                                                            enabled, fv_plugin);
+    m_managers[group_name] = fc_manager;
+    return fc_manager;
+}
+
 FlexCounterManager::FlexCounterManager(
         const string& group_name,
         const StatsMode stats_mode,
         const uint polling_interval,
-        const bool enabled) :
+        const bool enabled,
+        FieldValueTuple fv_plugin) :
     group_name(group_name),
     stats_mode(stats_mode),
     polling_interval(polling_interval),
     enabled(enabled),
+    fv_plugin(fv_plugin),
     flex_counter_db(new DBConnector("FLEX_COUNTER_DB", 0)),
     flex_counter_group_table(new ProducerTable(flex_counter_db.get(), FLEX_COUNTER_GROUP_TABLE)),
     flex_counter_table(new ProducerTable(flex_counter_db.get(), FLEX_COUNTER_TABLE))
@@ -86,6 +125,11 @@ void FlexCounterManager::applyGroupConfiguration()
         FieldValueTuple(FLEX_COUNTER_STATUS_FIELD, status_lookup.at(enabled))
     };
 
+    if (!fvField(fv_plugin).empty())
+    {
+        field_values.emplace_back(fv_plugin);
+    }
+
     flex_counter_group_table->set(group_name, field_values);
 }
 

orchagent/flex_counter/flex_counter_manager.h

@@ -4,8 +4,10 @@
 #include <string>
 #include <unordered_set>
 #include <unordered_map>
+#include <utility>
 #include "dbconnector.h"
 #include "producertable.h"
+#include "table.h"
 #include <inttypes.h>
 
 extern "C" {
@@ -24,6 +26,7 @@ enum class CounterType
     PORT_DEBUG,
     SWITCH_DEBUG,
     MACSEC_SA_ATTR,
+    TUNNEL,
 };
 
 // FlexCounterManager allows users to manage a group of flex counters.
@@ -38,7 +41,11 @@ class FlexCounterManager
                 const std::string& group_name,
                 const StatsMode stats_mode,
                 const uint polling_interval,
-                const bool enabled);
+                const bool enabled,
+                swss::FieldValueTuple fv_plugin = std::make_pair("",""));
+
+        FlexCounterManager() 
+        {}
 
         FlexCounterManager(const FlexCounterManager&) = delete;
         FlexCounterManager& operator=(const FlexCounterManager&) = delete;
@@ -54,6 +61,26 @@ class FlexCounterManager
                 const std::unordered_set<std::string>& counter_stats);
         void clearCounterIdList(const sai_object_id_t object_id);
 
+        const std::string& getGroupName() const
+        {
+            return group_name;
+        }
+
+        const StatsMode& getStatsMode() const
+        {
+            return stats_mode;
+        }
+
+        const uint& getPollingInterval() const
+        {
+            return polling_interval;
+        }
+
+        const bool& getEnabled() const
+        {
+            return enabled;
+        }
+
     protected:
         void applyGroupConfiguration();
 
@@ -68,6 +95,7 @@ class FlexCounterManager
         StatsMode stats_mode;
         uint polling_interval;
         bool enabled;
+        swss::FieldValueTuple fv_plugin;
         std::unordered_set<sai_object_id_t> installed_counters;
 
         std::shared_ptr<swss::DBConnector> flex_counter_db = nullptr;
@@ -79,4 +107,14 @@ class FlexCounterManager
         static const std::unordered_map<CounterType, std::string> counter_id_field_lookup;
 };
 
+class FlexManagerDirectory
+{
+    public:
+        FlexCounterManager* createFlexCounterManager(const std::string& group_name, const StatsMode stats_mode,
+                                                     const uint polling_interval, const bool enabled, 
+                                                     swss::FieldValueTuple fv_plugin = std::make_pair("",""));
+    private:
+        std::unordered_map<std::string, FlexCounterManager*>  m_managers;
+};
+
 #endif // ORCHAGENT_FLEX_COUNTER_MANAGER_H

orchagent/flexcounterorch.cpp

@@ -9,20 +9,23 @@
 #include "bufferorch.h"
 #include "flexcounterorch.h"
 #include "debugcounterorch.h"
+#include "directory.h"
 
 extern sai_port_api_t *sai_port_api;
 
 extern PortsOrch *gPortsOrch;
 extern FabricPortsOrch *gFabricPortsOrch;
 extern IntfsOrch *gIntfsOrch;
 extern BufferOrch *gBufferOrch;
+extern Directory<Orch*> gDirectory;
 
 #define BUFFER_POOL_WATERMARK_KEY   "BUFFER_POOL_WATERMARK"
 #define PORT_KEY                    "PORT"
 #define PORT_BUFFER_DROP_KEY        "PORT_BUFFER_DROP"
 #define QUEUE_KEY                   "QUEUE"
 #define PG_WATERMARK_KEY            "PG_WATERMARK"
 #define RIF_KEY                     "RIF"
+#define TUNNEL_KEY                  "TUNNEL"
 
 unordered_map<string, string> flexCounterGroupMap =
 {
@@ -38,6 +41,7 @@ unordered_map<string, string> flexCounterGroupMap =
     {"RIF", RIF_STAT_COUNTER_FLEX_COUNTER_GROUP},
     {"RIF_RATES", RIF_RATE_COUNTER_FLEX_COUNTER_GROUP},
     {"DEBUG_COUNTER", DEBUG_COUNTER_FLEX_COUNTER_GROUP},
+    {"TUNNEL", TUNNEL_STAT_COUNTER_FLEX_COUNTER_GROUP},
 };
 
 
@@ -58,6 +62,7 @@ void FlexCounterOrch::doTask(Consumer &consumer)
 {
     SWSS_LOG_ENTER();
 
+    VxlanTunnelOrch* vxlan_tunnel_orch = gDirectory.get<VxlanTunnelOrch*>();
     if (gPortsOrch && !gPortsOrch->allPortsReady())
     {
         return;
@@ -147,6 +152,10 @@ void FlexCounterOrch::doTask(Consumer &consumer)
                     {
                         gFabricPortsOrch->generateQueueStats();
                     }
+                    if (vxlan_tunnel_orch && (key== TUNNEL_KEY) && (value == "enable"))
+                    {
+                        vxlan_tunnel_orch->generateTunnelCounterMap();
+                    }
                     vector<FieldValueTuple> fieldValues;
                     fieldValues.emplace_back(FLEX_COUNTER_STATUS_FIELD, value);
                     m_flexCounterGroupTable->set(flexCounterGroupMap[key], fieldValues);

orchagent/tunnel_rates.lua

@@ -0,0 +1,98 @@
+-- KEYS - rif IDs
+-- ARGV[1] - counters db index
+-- ARGV[2] - counters table name
+-- ARGV[3] - poll time interval
+-- return log
+
+local logtable = {}
+
+local function logit(msg)
+  logtable[#logtable+1] = tostring(msg)
+end
+
+local counters_db = ARGV[1]
+local counters_table_name = ARGV[2] 
+local rates_table_name = "RATES"
+local sec_to_ms = 1000
+
+-- Get configuration
+redis.call('SELECT', counters_db)
+local smooth_interval = redis.call('HGET', rates_table_name .. ':' .. 'TUNNEL', 'TUNNEL_SMOOTH_INTERVAL')
+local alpha = redis.call('HGET', rates_table_name .. ':' .. 'TUNNEL', 'TUNNEL_ALPHA')
+if not alpha then
+  logit("Alpha is not defined")
+  return logtable
+end
+local one_minus_alpha = 1.0 - alpha
+local delta = tonumber(ARGV[3])
+
+local n = table.getn(KEYS)
+for i = 1, n do
+    local state_table = rates_table_name .. ':' .. KEYS[i] .. ':' .. 'TUNNEL'
+    local initialized = redis.call('HGET', state_table, 'INIT_DONE')
+    logit(initialized)
+
+    -- Get new COUNTERS values
+    local in_octets = 0
+    local in_packets = 0
+    local out_octets = 0
+    local out_packets = 0
+
+    if redis.call('HEXISTS', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_OCTETS') == 1 then
+        in_octets = redis.call('HGET', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_OCTETS')
+    end
+    if redis.call('HEXISTS', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_PACKETS') == 1 then
+        in_packets = redis.call('HGET', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_PACKETS')
+    end
+    if redis.call('HEXISTS', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_OCTETS') == 1 then
+        out_octets = redis.call('HGET', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_OCTETS')
+    end
+    if redis.call('HEXISTS', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_PACKETS') == 1 then
+        out_packets = redis.call('HGET', counters_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_PACKETS')
+    end
+
+    if initialized == "DONE" or initialized == "COUNTERS_LAST" then
+        -- Get old COUNTERS values
+        local in_octets_last = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_OCTETS_last')
+        local in_packets_last = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_PACKETS_last')
+        local out_octets_last = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_OCTETS_last')
+        local out_packets_last = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_PACKETS_last')
+        
+        -- Calculate new rates values
+        local rx_bps_new = (in_octets - in_octets_last)*sec_to_ms/delta
+        local tx_bps_new = (out_octets - out_octets_last)*sec_to_ms/delta
+        local rx_pps_new = (in_packets - in_packets_last)*sec_to_ms/delta
+        local tx_pps_new = (out_packets - out_packets_last)*sec_to_ms/delta
+
+        if initialized == "DONE" then
+            -- Get old rates values
+            local rx_bps_old = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'RX_BPS')
+            local rx_pps_old = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'RX_PPS')
+            local tx_bps_old = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'TX_BPS')
+            local tx_pps_old = redis.call('HGET', rates_table_name .. ':' .. KEYS[i], 'TX_PPS')
+
+            -- Smooth the rates values and store them in DB
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'RX_BPS', alpha*rx_bps_new + one_minus_alpha*rx_bps_old)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'RX_PPS', alpha*rx_pps_new + one_minus_alpha*rx_pps_old)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'TX_BPS', alpha*tx_bps_new + one_minus_alpha*tx_bps_old)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'TX_PPS', alpha*tx_pps_new + one_minus_alpha*tx_pps_old)   
+        else
+            -- Store unsmoothed initial rates values in DB
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'RX_BPS', rx_bps_new)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'RX_PPS', rx_pps_new)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'TX_BPS', tx_bps_new)
+            redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'TX_PPS', tx_pps_new)
+            redis.call('HSET', state_table, 'INIT_DONE', 'DONE')
+        end        
+    else
+        redis.call('HSET', state_table, 'INIT_DONE', 'COUNTERS_LAST')
+    end
+
+    -- Set old COUNTERS values
+    redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_OCTETS_last', in_octets)
+    redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_IN_PACKETS_last', in_packets)
+    redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_OCTETS_last', out_octets)
+    redis.call('HSET', rates_table_name .. ':' .. KEYS[i], 'SAI_TUNNEL_STAT_OUT_PACKETS_last', out_packets)
+end
+
+return logtable