[5458] Removed deleted_leases from ClientContext6.

Also, declined lease is treated as new lease when calling
leases6_committed hook.

src/bin/dhcp6/dhcp6_srv.cc

@@ -785,25 +785,7 @@ Dhcpv6Srv::processPacket(Pkt6Ptr& query, Pkt6Ptr& rsp) {
         callout_handle->setArgument("leases6", new_leases);
 
         Lease6CollectionPtr deleted_leases(new Lease6Collection());
-        // Do global list first
-        for (auto old_lease : ctx.deleted_leases_) {
-            if (ctx.new_leases_.empty()) {
-                deleted_leases->push_back(old_lease);
-                continue;
-            }
-            bool in_new = false;
-            for (auto const new_lease : ctx.new_leases_) {
-                if ((new_lease->addr_ == old_lease->addr_) &&
-                    (new_lease->prefixlen_ == old_lease->prefixlen_)) {
-                    in_new = true;
-                    break;
-                }
-            }
-            if (in_new) {
-                continue;
-            }
-            deleted_leases->push_back(old_lease);
-        }
+
         // Do per IA lists
         for (auto const iac : ctx.ias_) {
             if (!iac.old_leases_.empty()) {
@@ -820,10 +802,9 @@ Dhcpv6Srv::processPacket(Pkt6Ptr& query, Pkt6Ptr& rsp) {
                             break;
                         }
                     }
-                    if (in_new) {
-                        continue;
+                    if (!in_new) {
+                        deleted_leases->push_back(old_lease);
                     }
-                    deleted_leases->push_back(old_lease);
                 }
             }
         }
@@ -2343,7 +2324,7 @@ Dhcpv6Srv::releaseLeases(const Pkt6Ptr& release, Pkt6Ptr& reply,
 
         // Store the old lease.
         if (old_lease) {
-            ctx.deleted_leases_.push_back(old_lease);
+            ctx.currentIA().old_leases_.push_back(old_lease);
         }
     }
 
@@ -2981,7 +2962,7 @@ Dhcpv6Srv::declineLeases(const Pkt6Ptr& decline, Pkt6Ptr& reply,
         case D6O_IA_NA: {
             OptionPtr answer_opt = declineIA(decline, ctx.duid_, general_status,
                                              boost::dynamic_pointer_cast<Option6IA>(opt->second),
-                                             ctx.deleted_leases_);
+                                             ctx.new_leases_);
             if (answer_opt) {
 
                 // We have an answer, let's use it.
@@ -3007,7 +2988,7 @@ Dhcpv6Srv::declineLeases(const Pkt6Ptr& decline, Pkt6Ptr& reply,
 OptionPtr
 Dhcpv6Srv::declineIA(const Pkt6Ptr& decline, const DuidPtr& duid,
                      int& general_status, boost::shared_ptr<Option6IA> ia,
-                     Lease6Collection& old_leases) {
+                     Lease6Collection& new_leases) {
 
     LOG_DEBUG(lease6_logger, DBG_DHCP6_DETAIL, DHCP6_DECLINE_PROCESS_IA)
         .arg(decline->getLabel())
@@ -3113,8 +3094,9 @@ Dhcpv6Srv::declineIA(const Pkt6Ptr& decline, const DuidPtr& duid,
             // declineLease returns false only when hook callouts set the next
             // step status to drop. We just propagate the bad news here.
             return (OptionPtr());
+
         } else {
-            old_leases.push_back(lease);
+            new_leases.push_back(lease);
         }
     }
 

src/bin/dhcp6/dhcp6_srv.h

@@ -759,11 +759,11 @@ protected:
     /// @param duid client's duid (used to verify if the client owns the lease)
     /// @param general_status [out] status in top-level message (may be updated)
     /// @param ia specific IA_NA option to process.
-    /// @param old_leases a collection of leases being declined.
+    /// @param new_leases a collection of leases being declined.
     /// @return IA_NA option with response (to be included in Reply message)
     OptionPtr
     declineIA(const Pkt6Ptr& decline, const DuidPtr& duid, int& general_status,
-              boost::shared_ptr<Option6IA> ia, Lease6Collection& old_leases);
+              boost::shared_ptr<Option6IA> ia, Lease6Collection& new_leases);
 
     /// @brief Declines specific IPv6 lease.
     ///

src/bin/dhcp6/tests/hooks_unittest.cc

@@ -3486,14 +3486,14 @@ TEST_F(HooksDhcpv6SrvTest, leases6CommittedDecline) {
     sort(expected_argument_names.begin(), expected_argument_names.end());
     EXPECT_TRUE(callback_argument_names_ == expected_argument_names);
 
-    // No new allocations.
-    ASSERT_TRUE(callback_new_leases6_);
-    ASSERT_TRUE(callback_new_leases6_->empty());
+    // No deleted leases.
+    ASSERT_TRUE(callback_deleted_leases6_);
+    ASSERT_TRUE(callback_deleted_leases6_->empty());
 
     // Declined lease should be returned.
-    ASSERT_TRUE(callback_deleted_leases6_);
-    EXPECT_EQ(1, callback_deleted_leases6_->size());
-    Lease6Ptr lease = callback_deleted_leases6_->at(0);
+    ASSERT_TRUE(callback_new_leases6_);
+    EXPECT_EQ(1, callback_new_leases6_->size());
+    Lease6Ptr lease = callback_new_leases6_->at(0);
     ASSERT_TRUE(lease);
     EXPECT_EQ("2001:db8:1::28", lease->addr_.toText());
 

src/lib/dhcpsrv/alloc_engine.cc

@@ -444,7 +444,7 @@ AllocEngine::ClientContext6::ClientContext6(const Subnet6Ptr& subnet,
       duid_(duid), hwaddr_(), host_identifiers_(), hosts_(),
       fwd_dns_update_(fwd_dns), rev_dns_update_(rev_dns), hostname_(hostname),
       callout_handle_(callout_handle), allocated_resources_(), new_leases_(),
-      deleted_leases_(), ias_() {
+      ias_() {
 
     // Initialize host identifiers.
     if (duid) {

src/lib/dhcpsrv/alloc_engine.h

@@ -380,9 +380,6 @@ public:
         /// @brief A collection of newly allocated leases.
         Lease6Collection new_leases_;
 
-        /// @brief A collection of old leases that the client had before.
-        Lease6Collection deleted_leases_;
-
         //@}
 
         /// @brief Parameters pertaining to individual IAs.