+
+AT_SETUP([learning action - delete_learned feature])
+OVS_VSWITCHD_START
+
+# Add some initial flows and check that it was successful.
+AT_DATA([flows.txt], [dnl
+ reg0=0x1 actions=learn(delete_learned,cookie=0x123)
+ reg0=0x2 actions=learn(delete_learned,cookie=0x123)
+cookie=0x123, table=1, reg0=0x3 actions=drop
+cookie=0x123, table=1, reg0=0x4 actions=drop
+cookie=0x123, table=2, reg0=0x5 actions=drop
+cookie=0x234, table=1, reg0=0x6 actions=drop
+])
+AT_CHECK([ovs-ofctl add-flows br0 flows.txt])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=1, reg0=0x3 actions=drop
+ cookie=0x123, table=1, reg0=0x4 actions=drop
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+ cookie=0x234, table=1, reg0=0x6 actions=drop
+ reg0=0x1 actions=learn(table=1,delete_learned,cookie=0x123)
+ reg0=0x2 actions=learn(table=1,delete_learned,cookie=0x123)
+NXST_FLOW reply:
+])
+
+# Delete one of the learn actions. The learned flows should stay, since there
+# is another learn action with the identical target.
+AT_CHECK([ovs-ofctl del-flows br0 'table=0 reg0=1'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=1, reg0=0x3 actions=drop
+ cookie=0x123, table=1, reg0=0x4 actions=drop
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+ cookie=0x234, table=1, reg0=0x6 actions=drop
+ reg0=0x2 actions=learn(table=1,delete_learned,cookie=0x123)
+NXST_FLOW reply:
+])
+
+# Change the flow with the learn action by adding a second action. The learned
+# flows should stay because the learn action is still there.
+AT_CHECK([ovs-ofctl mod-flows br0 'table=0 reg0=2 actions=output:1,learn(delete_learned,cookie=0x123)'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=1, reg0=0x3 actions=drop
+ cookie=0x123, table=1, reg0=0x4 actions=drop
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+ cookie=0x234, table=1, reg0=0x6 actions=drop
+ reg0=0x2 actions=output:1,learn(table=1,delete_learned,cookie=0x123)
+NXST_FLOW reply:
+])
+
+# Change the flow with the learn action by replacing its learn action by one
+# with a different target. The (previous) learned flows disappear.
+AT_CHECK([ovs-ofctl mod-flows br0 'table=0 reg0=2 actions=learn(delete_learned,cookie=0x234)'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+ cookie=0x234, table=1, reg0=0x6 actions=drop
+ reg0=0x2 actions=learn(table=1,delete_learned,cookie=0x234)
+NXST_FLOW reply:
+])
+
+# Use add-flow to replace the flow with the learn action by one with the
+# same learn action and an extra action. The (new) learned flow remains.
+AT_CHECK([ovs-ofctl add-flow br0 'table=0 reg0=2 actions=learn(delete_learned,cookie=0x234),output:2'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+ cookie=0x234, table=1, reg0=0x6 actions=drop
+ reg0=0x2 actions=learn(table=1,delete_learned,cookie=0x234),output:2
+NXST_FLOW reply:
+])
+
+# Delete the flow with the learn action. The learned flow disappears too.
+AT_CHECK([ovs-ofctl del-flows br0 table=0])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=2, reg0=0x5 actions=drop
+NXST_FLOW reply:
+])
+
+# Add a new set of flows to check on a corner case: the learned flows
+# contain their own learn actions which cascade to further deletions.
+# This can't happen if the learned flows were actually created by a
+# learn action, since the learn action has very restricted action
+# support, but there's no restriction that the deleted flows were
+# created by a learn action.
+AT_DATA([flows.txt], [dnl
+ reg0=0x1 actions=learn(table=1,delete_learned,cookie=0x123)
+ reg0=0x2 actions=learn(table=2,delete_learned,cookie=0x234)
+cookie=0x123, table=1, reg0=0x3 actions=learn(table=3,delete_learned,cookie=0x345)
+cookie=0x234, table=2, reg0=0x3 actions=learn(table=4,delete_learned,cookie=0x456)
+cookie=0x345, table=3, reg0=0x4 actions=learn(table=5,delete_learned,cookie=0x567)
+cookie=0x456, table=4, reg0=0x5 actions=learn(table=5,delete_learned,cookie=0x567)
+cookie=0x567, table=5, reg0=0x6 actions=drop
+cookie=0x567, table=5, reg0=0x7 actions=drop
+cookie=0x567, table=5, reg0=0x8 actions=drop
+])
+AT_CHECK([ovs-ofctl del-flows br0])
+AT_CHECK([ovs-ofctl add-flows br0 flows.txt])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x123, table=1, reg0=0x3 actions=learn(table=3,delete_learned,cookie=0x345)
+ cookie=0x234, table=2, reg0=0x3 actions=learn(table=4,delete_learned,cookie=0x456)
+ cookie=0x345, table=3, reg0=0x4 actions=learn(table=5,delete_learned,cookie=0x567)
+ cookie=0x456, table=4, reg0=0x5 actions=learn(table=5,delete_learned,cookie=0x567)
+ cookie=0x567, table=5, reg0=0x6 actions=drop
+ cookie=0x567, table=5, reg0=0x7 actions=drop
+ cookie=0x567, table=5, reg0=0x8 actions=drop
+ reg0=0x1 actions=learn(table=1,delete_learned,cookie=0x123)
+ reg0=0x2 actions=learn(table=2,delete_learned,cookie=0x234)
+NXST_FLOW reply:
+])
+
+# Deleting the flow with reg0=1 should cascade to delete a few levels
+# of learned flows, but the ones with cookie=0x567 stick around
+# because of the flow with cookie=0x456.
+AT_CHECK([ovs-ofctl del-flows br0 'table=0 reg0=1'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+ cookie=0x234, table=2, reg0=0x3 actions=learn(table=4,delete_learned,cookie=0x456)
+ cookie=0x456, table=4, reg0=0x5 actions=learn(table=5,delete_learned,cookie=0x567)
+ cookie=0x567, table=5, reg0=0x6 actions=drop
+ cookie=0x567, table=5, reg0=0x7 actions=drop
+ cookie=0x567, table=5, reg0=0x8 actions=drop
+ reg0=0x2 actions=learn(table=2,delete_learned,cookie=0x234)
+NXST_FLOW reply:
+])
+
+# Deleting the flow with reg0=2 should cascade to delete all the rest:
+AT_CHECK([ovs-ofctl del-flows br0 'table=0 reg0=2'])
+AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
+NXST_FLOW reply:
+])
+OVS_VSWITCHD_STOP
+AT_CLEANUP