[fabricportsorch] Add fabric support (sonic-net#1459)

This code is to add support for fabric asics and NPU with fabric ports enabled.

What I did

Create FabricOrchDaemon for fabric asics, instead of using OrchDaemon which is used for NPU.

Create FabricPortsOrch to manage fabric ports. It collects information about port state, peer switch id and peer lane (stored in STATE_DB), sets up port stats and queue states. In future, it will also be used to enable/disable erroneous fabric ports.

Fabric port and queue stats are setup to be collected via FlexCounters.

orchagent/Makefile.am

@@ -36,6 +36,7 @@ orchagent_SOURCES = \
             neighorch.cpp \
             intfsorch.cpp \
             portsorch.cpp \
+            fabricportsorch.cpp \
             fgnhgorch.cpp \
             copporch.cpp \
             tunneldecaporch.cpp \

orchagent/fabricportsorch.cpp

@@ -0,0 +1,268 @@
+#include "fabricportsorch.h"
+
+#include <inttypes.h>
+#include <fstream>
+#include <sstream>
+#include <tuple>
+
+#include "logger.h"
+#include "schema.h"
+#include "sai_serialize.h"
+#include "timer.h"
+
+#define FABRIC_POLLING_INTERVAL_DEFAULT   (30)
+#define FABRIC_PORT_ERROR     0
+#define FABRIC_PORT_SUCCESS   1
+#define FABRIC_PORT_STAT_COUNTER_FLEX_COUNTER_GROUP         "FABRIC_PORT_STAT_COUNTER"
+#define FABRIC_PORT_STAT_FLEX_COUNTER_POLLING_INTERVAL_MS   10000
+#define FABRIC_QUEUE_STAT_COUNTER_FLEX_COUNTER_GROUP        "FABRIC_QUEUE_STAT_COUNTER"
+#define FABRIC_QUEUE_STAT_FLEX_COUNTER_POLLING_INTERVAL_MS  100000
+#define FABRIC_PORT_TABLE "FABRIC_PORT_TABLE"
+
+extern sai_object_id_t gSwitchId;
+extern sai_switch_api_t *sai_switch_api;
+extern sai_port_api_t *sai_port_api;
+
+const vector<sai_port_stat_t> port_stat_ids =
+{
+    SAI_PORT_STAT_IF_IN_OCTETS,
+    SAI_PORT_STAT_IF_IN_ERRORS,
+    SAI_PORT_STAT_IF_IN_FABRIC_DATA_UNITS,
+    SAI_PORT_STAT_IF_IN_FEC_CORRECTABLE_FRAMES,
+    SAI_PORT_STAT_IF_IN_FEC_NOT_CORRECTABLE_FRAMES,
+    SAI_PORT_STAT_IF_IN_FEC_SYMBOL_ERRORS,
+    SAI_PORT_STAT_IF_OUT_OCTETS,
+    SAI_PORT_STAT_IF_OUT_FABRIC_DATA_UNITS,
+};
+
+static const vector<sai_queue_stat_t> queue_stat_ids =
+{
+    SAI_QUEUE_STAT_WATERMARK_LEVEL,
+    SAI_QUEUE_STAT_CURR_OCCUPANCY_BYTES,
+    SAI_QUEUE_STAT_CURR_OCCUPANCY_LEVEL,
+};
+
+FabricPortsOrch::FabricPortsOrch(DBConnector *appl_db, vector<table_name_with_pri_t> &tableNames) :
+        Orch(appl_db, tableNames),
+        port_stat_manager(FABRIC_PORT_STAT_COUNTER_FLEX_COUNTER_GROUP, StatsMode::READ,
+                          FABRIC_PORT_STAT_FLEX_COUNTER_POLLING_INTERVAL_MS, true),
+        queue_stat_manager(FABRIC_QUEUE_STAT_COUNTER_FLEX_COUNTER_GROUP, StatsMode::READ,
+                           FABRIC_QUEUE_STAT_FLEX_COUNTER_POLLING_INTERVAL_MS, true),
+        m_timer(new SelectableTimer(timespec { .tv_sec = FABRIC_POLLING_INTERVAL_DEFAULT, .tv_nsec = 0 }))
+{
+    SWSS_LOG_ENTER();
+
+    SWSS_LOG_NOTICE( "FabricPortsOrch constructor" );
+
+    m_state_db = shared_ptr<DBConnector>(new DBConnector("STATE_DB", 0));
+    m_stateTable = unique_ptr<Table>(new Table(m_state_db.get(), FABRIC_PORT_TABLE));
+
+    m_counter_db = shared_ptr<DBConnector>(new DBConnector("COUNTERS_DB", 0));
+    m_laneQueueCounterTable = unique_ptr<Table>(new Table(m_counter_db.get(), COUNTERS_QUEUE_NAME_MAP));
+    m_lanePortCounterTable = unique_ptr<Table>(new Table(m_counter_db.get(), COUNTERS_QUEUE_PORT_MAP));
+
+    m_flex_db = shared_ptr<DBConnector>(new DBConnector("FLEX_COUNTER_DB", 0));
+    m_flexCounterTable = unique_ptr<ProducerTable>(new ProducerTable(m_flex_db.get(), FABRIC_PORT_TABLE));
+
+    getFabricPortList();
+
+    auto executor = new ExecutableTimer(m_timer, this, "FABRIC_POLL");
+    Orch::addExecutor(executor);
+    m_timer->start();
+}
+
+int FabricPortsOrch::getFabricPortList()
+{
+    SWSS_LOG_ENTER();
+
+    if (m_getFabricPortListDone) {
+        return FABRIC_PORT_SUCCESS;
+    }
+
+    uint32_t i;
+    sai_status_t status;
+    sai_attribute_t attr;
+
+    attr.id = SAI_SWITCH_ATTR_NUMBER_OF_FABRIC_PORTS;
+    status = sai_switch_api->get_switch_attribute(gSwitchId, 1, &attr);
+    if (status != SAI_STATUS_SUCCESS)
+    {
+        SWSS_LOG_ERROR("Failed to get fabric port number, rv:%d", status);
+        return FABRIC_PORT_ERROR;
+    }
+    m_fabricPortCount = attr.value.u32;
+    SWSS_LOG_NOTICE("Get %d fabric ports", m_fabricPortCount);
+
+    vector<sai_object_id_t> fabric_port_list;
+    fabric_port_list.resize(m_fabricPortCount);
+    attr.id = SAI_SWITCH_ATTR_FABRIC_PORT_LIST;
+    attr.value.objlist.count = (uint32_t)fabric_port_list.size();
+    attr.value.objlist.list = fabric_port_list.data();
+    status = sai_switch_api->get_switch_attribute(gSwitchId, 1, &attr);
+    if (status != SAI_STATUS_SUCCESS)
+    {
+        throw runtime_error("FabricPortsOrch get port list failure");
+    }
+
+    for (i = 0; i < m_fabricPortCount; i++)
+    {
+        sai_uint32_t lanes[1] = { 0 };
+        attr.id = SAI_PORT_ATTR_HW_LANE_LIST;
+        attr.value.u32list.count = 1;
+        attr.value.u32list.list = lanes;
+        status = sai_port_api->get_port_attribute(fabric_port_list[i], 1, &attr);
+        if (status != SAI_STATUS_SUCCESS)
+        {
+            throw runtime_error("FabricPortsOrch get port lane failure");
+        }
+        int lane = attr.value.u32list.list[0];
+        m_fabricLanePortMap[lane] = fabric_port_list[i];
+    }
+
+    generatePortStats();
+
+    m_getFabricPortListDone = true;
+
+    updateFabricPortState();
+
+    return FABRIC_PORT_SUCCESS;
+}
+
+bool FabricPortsOrch::allPortsReady()
+{
+    return m_getFabricPortListDone;
+}
+
+void FabricPortsOrch::generatePortStats()
+{
+    // FIX_ME: This function installs flex counters for port stats
+    // on fabric ports for fabric asics and voq asics (that connect
+    // to fabric asics via fabric ports). These counters will be
+    // installed in FLEX_COUNTER_DB, and queried by syncd and updated
+    // to COUNTERS_DB.
+    // However, currently BCM SAI doesn't update its code to query
+    // port stats (metrics in list port_stat_ids) yet.
+    // Also, BCM sets too low value for "Max logical port count" (256),
+    // causing syncd to crash on voq asics that now include regular front
+    // panel ports, fabric ports, and multiple logical ports.
+    // So, this function will just do nothing for now, and we will readd
+    // code to install port stats counters when BCM completely supports.
+}
+
+void FabricPortsOrch::generateQueueStats()
+{
+    if (m_isQueueStatsGenerated) return;
+    if (!m_getFabricPortListDone) return;
+
+    // FIX_ME: Similar to generatePortStats(), generateQueueStats() installs
+    // flex counters for queue stats on fabric ports for fabric asics and voq asics.
+    // However, currently BCM SAI doesn't fully support queue stats query.
+    // Query on queue type and index is not supported for fabric asics while
+    // voq asics are not completely supported.
+    // So, this function will just do nothing for now, and we will readd
+    // code to install queue stats counters when BCM completely supports.
+
+    m_isQueueStatsGenerated = true;
+}
+
+void FabricPortsOrch::updateFabricPortState()
+{
+    if (!m_getFabricPortListDone) return;
+
+    SWSS_LOG_ENTER();
+
+    sai_status_t status;
+    sai_attribute_t attr;
+
+    time_t now;
+    struct timespec time_now;
+    if (clock_gettime(CLOCK_MONOTONIC, &time_now) < 0)
+    {
+        return;
+    }
+    now = time_now.tv_sec;
+
+    for (auto p : m_fabricLanePortMap)
+    {
+        int lane = p.first;
+        sai_object_id_t port = p.second;
+
+        string key = "PORT" + to_string(lane);
+        std::vector<FieldValueTuple> values;
+        uint32_t remote_peer;
+        uint32_t remote_port;
+
+        attr.id = SAI_PORT_ATTR_FABRIC_ATTACHED;
+        status = sai_port_api->get_port_attribute(port, 1, &attr);
+        if (status != SAI_STATUS_SUCCESS)
+        {
+            // Port may not be ready for query
+            SWSS_LOG_ERROR("Failed to get fabric port (%d) status, rv:%d", lane, status);
+            return;
+        }
+
+        if (m_portStatus.find(lane) != m_portStatus.end() &&
+            m_portStatus[lane] && !attr.value.booldata)
+        {
+            m_portDownCount[lane] ++;
+            m_portDownSeenLastTime[lane] = now;
+        }
+        m_portStatus[lane] = attr.value.booldata;
+
+        if (m_portStatus[lane])
+        {
+            attr.id = SAI_PORT_ATTR_FABRIC_ATTACHED_SWITCH_ID;
+            status = sai_port_api->get_port_attribute(port, 1, &attr);
+            if (status != SAI_STATUS_SUCCESS)
+            {
+                throw runtime_error("FabricPortsOrch get remote id failure");
+            }
+            remote_peer = attr.value.u32;
+
+            attr.id = SAI_PORT_ATTR_FABRIC_ATTACHED_PORT_INDEX;
+            status = sai_port_api->get_port_attribute(port, 1, &attr);
+            if (status != SAI_STATUS_SUCCESS)
+            {
+                throw runtime_error("FabricPortsOrch get remote port index failure");
+            }
+            remote_port = attr.value.u32;
+        }
+
+        values.emplace_back("STATUS", m_portStatus[lane] ? "up" : "down");
+        if (m_portStatus[lane])
+        {
+            values.emplace_back("REMOTE_MOD", to_string(remote_peer));
+            values.emplace_back("REMOTE_PORT", to_string(remote_port));
+        }
+        if (m_portDownCount[lane] > 0)
+        {
+            values.emplace_back("PORT_DOWN_COUNT", to_string(m_portDownCount[lane]));
+            values.emplace_back("PORT_DOWN_SEEN_LAST_TIME",
+                                to_string(m_portDownSeenLastTime[lane]));
+        }
+        m_stateTable->set(key, values);
+    }
+}
+
+void FabricPortsOrch::doTask()
+{
+}
+
+void FabricPortsOrch::doTask(Consumer &consumer)
+{
+}
+
+void FabricPortsOrch::doTask(swss::SelectableTimer &timer)
+{
+    SWSS_LOG_ENTER();
+
+    if (!m_getFabricPortListDone)
+    {
+        getFabricPortList();
+    }
+
+    if (m_getFabricPortListDone)
+    {
+        updateFabricPortState();
+    }
+}

orchagent/fabricportsorch.h

@@ -0,0 +1,51 @@
+#ifndef SWSS_FABRICPORTSORCH_H
+#define SWSS_FABRICPORTSORCH_H
+
+#include <map>
+
+#include "orch.h"
+#include "observer.h"
+#include "observer.h"
+#include "producertable.h"
+#include "flex_counter_manager.h"
+
+class FabricPortsOrch : public Orch, public Subject
+{
+public:
+    FabricPortsOrch(DBConnector *appl_db, vector<table_name_with_pri_t> &tableNames);
+    bool allPortsReady();
+    void generateQueueStats();
+
+private:
+    shared_ptr<DBConnector> m_state_db;
+    shared_ptr<DBConnector> m_counter_db;
+    shared_ptr<DBConnector> m_flex_db;
+
+    unique_ptr<Table> m_stateTable;
+    unique_ptr<Table> m_laneQueueCounterTable;
+    unique_ptr<Table> m_lanePortCounterTable;
+    unique_ptr<ProducerTable> m_flexCounterTable;
+
+    swss::SelectableTimer *m_timer = nullptr;
+
+    FlexCounterManager port_stat_manager;
+    FlexCounterManager queue_stat_manager;
+
+    sai_uint32_t m_fabricPortCount;
+    map<int, sai_object_id_t> m_fabricLanePortMap;
+    unordered_map<int, bool> m_portStatus;
+    unordered_map<int, size_t> m_portDownCount;
+    unordered_map<int, time_t> m_portDownSeenLastTime;
+
+    bool m_getFabricPortListDone = false;
+    bool m_isQueueStatsGenerated = false;
+    int getFabricPortList();
+    void generatePortStats();
+    void updateFabricPortState();
+
+    void doTask() override;
+    void doTask(Consumer &consumer);
+    void doTask(swss::SelectableTimer &timer);
+};
+
+#endif /* SWSS_FABRICPORTSORCH_H */

orchagent/flexcounterorch.cpp

@@ -1,6 +1,7 @@
 #include <unordered_map>
 #include "flexcounterorch.h"
 #include "portsorch.h"
+#include "fabricportsorch.h"
 #include "select.h"
 #include "notifier.h"
 #include "sai_serialize.h"
@@ -12,6 +13,7 @@
 extern sai_port_api_t *sai_port_api;
 
 extern PortsOrch *gPortsOrch;
+extern FabricPortsOrch *gFabricPortsOrch;
 extern IntfsOrch *gIntfsOrch;
 extern BufferOrch *gBufferOrch;
 
@@ -51,7 +53,12 @@ void FlexCounterOrch::doTask(Consumer &consumer)
 {
     SWSS_LOG_ENTER();
 
-    if (!gPortsOrch->allPortsReady())
+    if (gPortsOrch && !gPortsOrch->allPortsReady())
+    {
+        return;
+    }
+
+    if (gFabricPortsOrch && !gFabricPortsOrch->allPortsReady())
     {
         return;
     }
@@ -101,15 +108,28 @@ void FlexCounterOrch::doTask(Consumer &consumer)
                     // This can be because generateQueueMap() installs a fundamental list of queue stats
                     // that need to be polled. So my doubt here is if queue watermark stats shall be piggybacked
                     // into the same function as they may not be counted as fundamental
-                    gPortsOrch->generateQueueMap();
-                    gPortsOrch->generatePriorityGroupMap();
-                    gIntfsOrch->generateInterfaceMap();
+                    if(gPortsOrch)
+                    {
+                        gPortsOrch->generateQueueMap();
+                        gPortsOrch->generatePriorityGroupMap();
+                    }
+                    if(gPortsOrch)
+                    {
+                        gPortsOrch->generatePriorityGroupMap();
+                    }
+                    if(gIntfsOrch)
+                    {
+                        gIntfsOrch->generateInterfaceMap();
+                    }
                     // Install COUNTER_ID_LIST/ATTR_ID_LIST only when hearing buffer pool watermark enable event
-                    if ((key == BUFFER_POOL_WATERMARK_KEY) && (value == "enable"))
+                    if (gBufferOrch && (key == BUFFER_POOL_WATERMARK_KEY) && (value == "enable"))
                     {
                         gBufferOrch->generateBufferPoolWatermarkCounterIdList();
                     }
-
+                    if (gFabricPortsOrch)
+                    {
+                        gFabricPortsOrch->generateQueueStats();
+                    }
                     vector<FieldValueTuple> fieldValues;
                     fieldValues.emplace_back(FLEX_COUNTER_STATUS_FIELD, value);
                     m_flexCounterGroupTable->set(flexCounterGroupMap[key], fieldValues);