Revert "Detect vrouter evicted flows during aging and remove them fro…

…m agent."

This reverts commit af647a2.

Change-Id: I995d42eb00b435ac6fc2a864a27beeb5cb28ee09
Closes-Bug: #1541033

src/ksync/ksync_sock.h

@@ -246,7 +246,6 @@ class KSyncSock {
     int SendBulkMessage(KSyncBulkSandeshContext *bulk_context, uint32_t seqno);
     bool TryAddToBulk(KSyncBulkSandeshContext *bulk_context, IoContext *ioc);
     void OnEmptyQueue(bool done);
-    int tx_count() const { return tx_count_; }
 
     // Start Ksync Asio operations
     static void Start(bool read_inline);

src/ksync/ksync_sock_user.cc

@@ -639,20 +639,6 @@ void KSyncSockTypeMap::IncrFlowStats(int idx, int pkts, int bytes) {
     }
 }
 
-void KSyncSockTypeMap::SetEvictedFlag(int idx) {
-    vr_flow_entry *f = &flow_table_[idx];
-    if (f->fe_flags & VR_FLOW_FLAG_ACTIVE) {
-        f->fe_flags |= VR_FLOW_FLAG_EVICTED;
-    }
-}
-
-void KSyncSockTypeMap::ResetEvictedFlag(int idx) {
-    vr_flow_entry *f = &flow_table_[idx];
-    if (f->fe_flags & VR_FLOW_FLAG_ACTIVE) {
-        f->fe_flags &= ~VR_FLOW_FLAG_EVICTED;
-    }
-}
-
 void KSyncSockTypeMap::SetTcpFlag(int idx, uint32_t flags) {
     vr_flow_entry *f = &flow_table_[idx];
     if (f->fe_flags & VR_FLOW_FLAG_ACTIVE) {

src/ksync/ksync_sock_user.h

@@ -176,8 +176,6 @@ class KSyncSockTypeMap : public KSyncSock {
     static void SetFlowEntry(vr_flow_req *req, bool set);
     static void IncrFlowStats(int idx, int pkts, int bytes);
     static void SetTcpFlag(int idx, uint32_t flags);
-    static void SetEvictedFlag(int idx);
-    static void ResetEvictedFlag(int idx);
     static void SetOFlowStats(int idx, uint8_t pkts, uint16_t bytes);
     static void SetFlowTcpFlags(int idx, uint16_t flags);;
     static void FlowNatResponse(uint32_t seq_num, vr_flow_req *req);

src/vnsw/agent/pkt/flow_entry.cc

@@ -348,7 +348,6 @@ void FlowEntry::Reset() {
     sg_rule_uuid_= FlowPolicyStateStr.at(NOT_EVALUATED);
     ksync_index_entry_ = std::auto_ptr<KSyncFlowIndexEntry>
         (new KSyncFlowIndexEntry());
-    vrouter_evicted_ = false;
 }
 
 void FlowEntry::Reset(const FlowKey &k) {

src/vnsw/agent/pkt/flow_entry.h

@@ -483,8 +483,6 @@ class FlowEntry {
     void set_fsc(FlowStatsCollector *fsc) {
         fsc_ = fsc;
     }
-    void set_vrouter_evicted(bool value) { vrouter_evicted_ = value; }
-    bool vrouter_evicted() const { return vrouter_evicted_; }
     static std::string DropReasonStr(uint16_t reason);
 private:
     friend class FlowTable;
@@ -530,7 +528,6 @@ class FlowEntry {
     tbb::mutex mutex_;
     boost::intrusive::list_member_hook<> free_list_node_;
     FlowStatsCollector *fsc_;
-    bool vrouter_evicted_;
     // IMPORTANT: Remember to update Reset() routine if new fields are added
     // IMPORTANT: Remember to update Copy() routine if new fields are added
 

src/vnsw/agent/pkt/flow_event.h

@@ -58,84 +58,82 @@ class FlowEvent {
 
     FlowEvent() :
         event_(INVALID), flow_(NULL), pkt_info_(), db_entry_(NULL),
-        gen_id_(0), del_rev_flow_(false), vrouter_evicted_(false),
+        gen_id_(0), del_rev_flow_(false),
         flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(NULL),
         ksync_event_() {
     }
 
     FlowEvent(Event event) :
         event_(event), flow_(NULL), pkt_info_(), db_entry_(NULL),
-        gen_id_(0), del_rev_flow_(false), vrouter_evicted_(false),
-        ksync_entry_(NULL), ksync_event_() {
+        gen_id_(0), del_rev_flow_(false), ksync_entry_(NULL), ksync_event_() {
     }
 
     FlowEvent(Event event, FlowEntry *flow) :
         event_(event), flow_(flow), pkt_info_(), db_entry_(NULL),
-        gen_id_(0), del_rev_flow_(false), vrouter_evicted_(false),
+        gen_id_(0), del_rev_flow_(false),
         flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(NULL),
         ksync_event_() {
     }
 
     FlowEvent(Event event, FlowEntry *flow, uint32_t flow_handle) :
         event_(event), flow_(flow), pkt_info_(), db_entry_(NULL),
-        gen_id_(0), del_rev_flow_(false), vrouter_evicted_(false),
-        flow_handle_(flow_handle), ksync_entry_(NULL), ksync_event_() {
+        gen_id_(0), del_rev_flow_(false), flow_handle_(flow_handle),
+        ksync_entry_(NULL), ksync_event_() {
     }
 
     FlowEvent(Event event, FlowEntry *flow, const DBEntry *db_entry) :
         event_(event), flow_(flow), pkt_info_(), db_entry_(db_entry),
-        gen_id_(0), del_rev_flow_(false), vrouter_evicted_(false),
+        gen_id_(0), del_rev_flow_(false),
         flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(NULL),
         ksync_event_() {
     }
 
     FlowEvent(Event event, const DBEntry *db_entry, uint32_t gen_id) :
         event_(event), flow_(NULL), pkt_info_(), db_entry_(db_entry),
-        gen_id_(gen_id), del_rev_flow_(false), vrouter_evicted_(false),
+        gen_id_(gen_id), del_rev_flow_(false),
         flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(NULL),
         ksync_event_() {
     }
 
-    FlowEvent(Event event, const FlowKey &key, bool del_rev_flow, bool evict) :
+    FlowEvent(Event event, const FlowKey &key, bool del_rev_flow) :
         event_(event), flow_(NULL), pkt_info_(), db_entry_(NULL),
         gen_id_(0), flow_key_(key), del_rev_flow_(del_rev_flow),
-        vrouter_evicted_(evict), flow_handle_(FlowEntry::kInvalidFlowHandle),
-        ksync_entry_(NULL), ksync_event_() {
+        flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(NULL),
+        ksync_event_() {
     }
 
     FlowEvent(Event event, PktInfoPtr pkt_info) :
         event_(event), flow_(NULL), pkt_info_(pkt_info), db_entry_(NULL),
-        gen_id_(0), flow_key_(), del_rev_flow_(), vrouter_evicted_(false),
+        gen_id_(0), flow_key_(), del_rev_flow_(),
         flow_handle_(FlowEntry::kInvalidFlowHandle),
         ksync_entry_(NULL), ksync_event_() {
     }
 
     FlowEvent(KSyncEntry *entry, KSyncEntry::KSyncEvent event) :
         event_(KSYNC_EVENT), flow_(NULL), pkt_info_(), db_entry_(NULL),
-        gen_id_(0), flow_key_(), del_rev_flow_(), vrouter_evicted_(false),
+        gen_id_(0), flow_key_(), del_rev_flow_(),
         flow_handle_(FlowEntry::kInvalidFlowHandle),
         ksync_entry_(entry), ksync_event_(event) {
     }
 
     FlowEvent(KSyncEntry *entry, uint32_t flow_handle) :
         event_(FLOW_HANDLE_UPDATE), flow_(NULL), pkt_info_(),
         db_entry_(NULL), gen_id_(0), flow_key_(), del_rev_flow_(),
-        vrouter_evicted_(false), flow_handle_(flow_handle), ksync_entry_(entry),
-        ksync_event_() {
+        flow_handle_(flow_handle), ksync_entry_(entry), ksync_event_() {
     }
 
     FlowEvent(KSyncEntry *entry) :
         event_(KSYNC_VROUTER_ERROR), flow_(NULL), pkt_info_(),
         db_entry_(NULL), gen_id_(0), flow_key_(), del_rev_flow_(),
-        vrouter_evicted_(false), flow_handle_(FlowEntry::kInvalidFlowHandle),
-        ksync_entry_(entry), ksync_event_() {
+        flow_handle_(FlowEntry::kInvalidFlowHandle), ksync_entry_(entry),
+        ksync_event_() {
     }
 
     FlowEvent(const FlowEvent &rhs) :
         event_(rhs.event_), flow_(rhs.flow()), pkt_info_(rhs.pkt_info_),
         db_entry_(rhs.db_entry_), gen_id_(rhs.gen_id_),
         flow_key_(rhs.flow_key_), del_rev_flow_(rhs.del_rev_flow_),
-        vrouter_evicted_(rhs.vrouter_evicted_), flow_handle_(rhs.flow_handle_),
+        flow_handle_(rhs.flow_handle_),
         ksync_entry_(rhs.ksync_entry_), ksync_event_(rhs.ksync_event_) {
     }
 
@@ -149,7 +147,6 @@ class FlowEvent {
     uint32_t gen_id() const { return gen_id_; }
     const FlowKey &get_flow_key() const { return flow_key_; }
     bool get_del_rev_flow() const { return del_rev_flow_; }
-    bool get_vrouter_evicted() const { return vrouter_evicted_; }
     PktInfoPtr pkt_info() const { return pkt_info_; }
     uint32_t flow_handle() const { return flow_handle_; }
 
@@ -163,7 +160,6 @@ class FlowEvent {
     uint32_t gen_id_;
     FlowKey flow_key_;
     bool del_rev_flow_;
-    bool vrouter_evicted_;
     uint32_t flow_handle_;
     KSyncEntry::KSyncEntryPtr ksync_entry_;
     KSyncEntry::KSyncEvent ksync_event_;

src/vnsw/agent/pkt/flow_mgmt.cc

@@ -259,7 +259,7 @@ bool BgpAsAServiceFlowMgmtEntry::NonOperEntryDelete(FlowMgmtManager *mgr,
 
     Tree::iterator it = tree_.begin();
     while (it != tree_.end()) {
-        FlowEvent flow_resp(event, (*it)->key(), true, false);
+        FlowEvent flow_resp(event, (*it)->key(), true);
         flow_resp.set_flow(*it);
         mgr->EnqueueFlowEvent(flow_resp);
         it++;

src/vnsw/agent/pkt/flow_proto.cc

@@ -259,8 +259,7 @@ bool FlowProto::FlowEventHandler(const FlowEvent &req, FlowTable *table) {
 
     case FlowEvent::DELETE_FLOW: {
         FlowTable *table = GetFlowTable(req.get_flow_key());
-        table->Delete(req.get_flow_key(), req.get_del_rev_flow(),
-                      req.get_vrouter_evicted());
+        table->Delete(req.get_flow_key(), req.get_del_rev_flow());
         break;
     }
 
@@ -355,10 +354,8 @@ bool FlowProto::FlowEventHandler(const FlowEvent &req, FlowTable *table) {
     return true;
 }
 
-void FlowProto::DeleteFlowRequest(const FlowKey &flow_key, bool del_rev_flow,
-                                  bool evicted) {
-    EnqueueFlowEvent(FlowEvent(FlowEvent::DELETE_FLOW, flow_key, del_rev_flow,
-                               evicted));
+void FlowProto::DeleteFlowRequest(const FlowKey &flow_key, bool del_rev_flow) {
+    EnqueueFlowEvent(FlowEvent(FlowEvent::DELETE_FLOW, flow_key, del_rev_flow));
     return;
 }
 
@@ -380,7 +377,7 @@ void FlowProto::CreateAuditEntry(FlowEntry *flow) {
 
 
 void FlowProto::GrowFreeListRequest(const FlowKey &key) {
-    EnqueueFlowEvent(FlowEvent(FlowEvent::GROW_FREE_LIST, key, false, false));
+    EnqueueFlowEvent(FlowEvent(FlowEvent::GROW_FREE_LIST, key, false));
     return;
 }
 

src/vnsw/agent/pkt/flow_proto.h

@@ -62,8 +62,7 @@ class FlowProto : public Proto {
 
     void EnqueueEvent(const FlowEvent &event, FlowTable *table);
     void EnqueueFlowEvent(const FlowEvent &event);
-    void DeleteFlowRequest(const FlowKey &flow_key, bool del_rev_flow,
-                           bool evicted);
+    void DeleteFlowRequest(const FlowKey &flow_key, bool del_rev_flow);
     void EvictFlowRequest(FlowEntry *flow, uint32_t flow_handle);
     void RetryIndexAcquireRequest(FlowEntry *flow, uint32_t flow_handle);
     void CreateAuditEntry(FlowEntry *flow);

src/vnsw/agent/pkt/flow_table.cc

@@ -263,8 +263,7 @@ void FlowTable::DeleteInternal(FlowEntryMap::iterator &it, uint64_t time) {
     agent_->stats()->UpdateFlowDelMinMaxStats(time);
 }
 
-bool FlowTable::Delete(const FlowKey &key, bool del_reverse_flow,
-                       bool vrouter_evicted) {
+bool FlowTable::Delete(const FlowKey &key, bool del_reverse_flow) {
     FlowEntryMap::iterator it;
     FlowEntry *fe;
 
@@ -273,7 +272,6 @@ bool FlowTable::Delete(const FlowKey &key, bool del_reverse_flow,
         return false;
     }
     fe = it->second;
-    fe->set_vrouter_evicted(vrouter_evicted);
 
     FlowEntry *reverse_flow = NULL;
     if (del_reverse_flow) {
@@ -290,7 +288,6 @@ bool FlowTable::Delete(const FlowKey &key, bool del_reverse_flow,
 
     it = flow_entry_map_.find(reverse_flow->key());
     if (it != flow_entry_map_.end()) {
-        it->second->set_vrouter_evicted(vrouter_evicted);
         DeleteInternal(it, time);
         return true;
     }
@@ -308,7 +305,7 @@ void FlowTable::DeleteAll() {
             it->second == entry->reverse_flow_entry()) {
             ++it;
         }
-        Delete(entry->key(), true, false);
+        Delete(entry->key(), true);
     }
 }
 
@@ -369,7 +366,7 @@ void FlowTable::UpdateReverseFlow(FlowEntry *flow, FlowEntry *rflow) {
         //same reverse flow as its is nat'd with fabric sip/dip.
         //To avoid this delete old flow and dont let new flow to be short flow.
         if (rflow_rev) {
-            Delete(rflow_rev->key(), false, false);
+            Delete(rflow_rev->key(), false);
             rflow_rev = NULL;
         }
     }
@@ -671,7 +668,7 @@ void FlowTable::RevaluateFlow(FlowEntry *flow) {
 // Handle deletion of a Route. Flow management module has identified that route
 // must be deleted
 void FlowTable::DeleteMessage(FlowEntry *flow) {
-    Delete(flow->key(), true, false);
+    Delete(flow->key(), true);
     DeleteFlowInfo(flow);
 }
 

src/vnsw/agent/pkt/flow_table.h

@@ -163,7 +163,7 @@ class FlowTable {
     bool IsEvictedFlow(const FlowKey &key);
     void Add(FlowEntry *flow, FlowEntry *rflow);
     void Update(FlowEntry *flow, FlowEntry *rflow);
-    bool Delete(const FlowKey &key, bool del_reverse_flow, bool evicted);
+    bool Delete(const FlowKey &key, bool del_reverse_flow);
     bool Delete(const FlowKey &flow_key);
     void DeleteAll();
     // Test code only used method

src/vnsw/agent/pkt/test/test_flow_eviction.cc

@@ -9,7 +9,6 @@
 #include "ksync/ksync_sock_user.h"
 #include "oper/tunnel_nh.h"
 #include "pkt/flow_mgmt.h"
-#include "uve/test/test_uve_util.h"
 #include <algorithm>
 
 #define vm1_ip "1.1.1.1"
@@ -24,7 +23,7 @@ struct PortInfo input[] = {
 
 class FlowEvictionTest : public ::testing::Test {
 public:
-    FlowEvictionTest() : peer_(NULL), agent_(Agent::GetInstance()), util_() {
+    FlowEvictionTest() : peer_(NULL), agent_(Agent::GetInstance()) {
         flow_proto_ = agent_->pkt()->get_flow_proto();
         flow_mgmt_ = agent_->pkt()->flow_mgmt_manager();
         eth = EthInterfaceGet("vnet0");
@@ -106,7 +105,6 @@ class FlowEvictionTest : public ::testing::Test {
     char router_id_[80];
     InetUnicastAgentRouteTable *inet4_table_;
     KSyncSockTypeMap *ksync_sock_;
-    TestUveUtil util_;
 };
 
 // New flow no-eviction
@@ -419,7 +417,7 @@ TEST_F(FlowEvictionTest, Delete_Evicted_Flow_1) {
     EXPECT_TRUE(FlowGet(vrf_id, remote_vm1_ip, vm1_ip, 2, 0, 0,
                         vif0->flow_key_nh()->id()) == false);
 
-    flow_proto_->DeleteFlowRequest(key, true, false);
+    flow_proto_->DeleteFlowRequest(key, true);
     client->WaitForIdle();
 
     // New flow should be present
@@ -443,7 +441,7 @@ TEST_F(FlowEvictionTest, Delete_Evicted_Flow_2) {
     EXPECT_TRUE(flow != NULL);
 
     // Generate delete request followed by flow-evict
-    flow_proto_->DeleteFlowRequest(flow->key(), true, false);
+    flow_proto_->DeleteFlowRequest(flow->key(), true);
     // Generate a flow that evicts flow created above
     TxIpMplsPacket(eth->id(), remote_compute, router_id_, vif0->label(),
                    remote_vm1_ip, vm1_ip, 1, 1);
@@ -476,7 +474,7 @@ TEST_F(FlowEvictionTest, Delete_Index_Unassigned_Flow_1) {
     EXPECT_TRUE(flow != NULL);
 
     FlowKey key = flow->key();
-    flow_proto_->DeleteFlowRequest(key, true, false);
+    flow_proto_->DeleteFlowRequest(key, true);
     client->WaitForIdle();
 
     ksync_sock_->DisableReceiveQueue(false);
@@ -486,53 +484,6 @@ TEST_F(FlowEvictionTest, Delete_Index_Unassigned_Flow_1) {
                         vif0->flow_key_nh()->id()) == NULL);
 }
 
-TEST_F(FlowEvictionTest, AgeOutVrouterEvictedFlow) {
-    TxIpMplsPacket(eth->id(), remote_compute, router_id_, vif0->label(),
-                   remote_vm1_ip, vm1_ip, 1, 1);
-    client->WaitForIdle();
-
-    uint32_t vrf_id = vif0->vrf_id();
-    FlowEntry *flow = FlowGet(vrf_id, remote_vm1_ip, vm1_ip, 1, 0, 0,
-                              vif0->flow_key_nh()->id());
-    EXPECT_TRUE(flow != NULL);
-    uint32_t flow_handle = flow->flow_handle();
-    EXPECT_TRUE(flow_handle != FlowEntry::kInvalidFlowHandle);
-    KSyncSock *sock = KSyncSock::Get(0);
-
-    //Fetch the delete_count_ for delete enqueues
-    uint32_t delete_count = agent_->GetFlowProto()->flow_stats()->delete_count_;
-    uint32_t tx_count = sock->tx_count();
-
-    //Invoke FlowStatsCollector to enqueue delete for evicted flow.
-    util_.EnqueueFlowStatsCollectorTask();
-    client->WaitForIdle();
-
-    //Verify that delete count has not been modified
-    EXPECT_EQ(delete_count, agent_->GetFlowProto()->flow_stats()->
-                                  delete_count_);
-
-    //Set Evicted flag for the flow
-    KSyncSockTypeMap::SetEvictedFlag(flow_handle);
-
-    //Invoke FlowStatsCollector to enqueue delete for evicted flow.
-    util_.EnqueueFlowStatsCollectorTask();
-    client->WaitForIdle();
-
-    //Verify that delete count has been increased by 1
-    EXPECT_EQ((delete_count + 1), agent_->GetFlowProto()->flow_stats()->
-                                  delete_count_);
-
-    //Verify that evicted flows have been removed
-    WAIT_FOR(100, 100, (flow_proto_->FlowCount() == 0));
-
-    //Verify that tx_count is unchanged after deletion of evicted flows
-    //because agent does not sent any message to vrouter for evicted flows
-    EXPECT_EQ(tx_count, sock->tx_count());
-
-    //Reset the Evicted flag set by this test-case
-    KSyncSockTypeMap::ResetEvictedFlag(flow_handle);
-}
-
 int main(int argc, char *argv[]) {
     int ret = 0;