@$(SSH) $(HOST_$*) $(SUDO) sliver-ovs stop && rm cache/switch.$* cache/db.$*
### link-oriented targets
-# L/<nodeid>-<node_id>
+# L/<nodeid1>-<node_id2>:
+# Establish a link between nodes <node_id1> and <node_id2>
L/%: cache/endpoint.%@1 cache/endpoint.%@2
@touch $@
@echo "Link $* is up"
+# U/<node_id1>-<node_id2>
+# Tear down the link between nodes <node_id1> and <node_id2>
U/%: del-iface.%@1 del-iface.%@2
@rm -f L/$*
@echo "Deleted link $*"
+# del-bridge.<node_id>: Delete the bridge on node <node_id>.
+#
+# We can do this only if the db on node <node_id> is running, but
+# we don't need to re-delete if the db is restarted (hence the
+# order-only dependency).
+#
+# Deleting a bridge also deletes all interfaces of the bridge
+# as a side effect. This in turn invalidates local tunnel
+# port numbers and endpoint info on both sides of each affected tunnel.
+# The corresponding links obviously go down.
+# Controller information is also lost.
+# We invalidate the cache accordingly.
del-bridge.%: | cache/db.%
@echo "Deleting bridge on $(call display,$*)"
@$(SSH) $(HOST_$*) $(SUDO) sliver-ovs del-bridge $(BRIDGE);
cache/iface.$*$(SEP)*@1 cache/iface.*$(SEP)$*@2 \
cache/port.$*$(SEP)*@1 cache/port.*$(SEP)$*@2 \
cache/endpoint.$*$(SEP)*@? cache/endpoint.*$(SEP)$*@? \
- L/$*$(SEP)* L/*$(SEP)$*
-
+ L/$*$(SEP)* L/*$(SEP)$* \
+ cache/controller.$*
+
+# del-switch.<node_id>: Stops the switch daemon on <node_id>.
+#
+# As a side effect, the local port numbers of the tunnels
+# are no longer valid (they will change when the daemon is restarted)
+# and, therefore, the endpoint info on the remote side of
+# the tunnels must be invalidated. The links also go down.
+# Controller information is also lost.
+# We invalidate the cache accordingly.
del-switch.%:
@echo "Shutting down switch on $(call display,$*)"
@$(SSH) $(HOST_$*) $(SUDO) sliver-ovs stop-switch
@rm -f cache/switch.$* \
cache/port.$*$(SEP)*@1 cache/port.*$(SEP)$*@2 \
cache/endpoint.$*$(SEP)*@2 cache/endpoint.*$(SEP)$*@1 \
- L/$*$(SEP)* L/*$(SEP)$*
+ L/$*$(SEP)* L/*$(SEP)$* \
+ cache/controller.$*
+# del-db.<node_id>: Stops the db daemon on <node_id>.
+#
+# This has no additional side effects.
del-db.%:
@echo "Shutting down db on $(call display,$*)"
@$(SSH) $(HOST_$*) $(SUDO) sliver-ovs stop-db
@rm -f cache/db.$*
+# del-controller.<node_id>:
+# Detaches <node_id> from the controller.
+#
+# This has no additional side effects.
del-controller-%: | cache/db.%
@echo "Removing controller for $(call display,$*)"
@$(SSH) $(HOST_$*) $(SUDO) sliver-ovs del-controller $(BRIDGE)
@rm -f cache/controller.$*
+# del-links: Shortcut to delete all currently up links.
del-links: $(addprefix U/,$(notdir $(wildcard L/*)))
+# del-switchs: Shortcut to stop all currently running switch daemons.
del-switchs: $(addprefix del-,$(notdir $(wildcard cache/switch.*)))
+# del-dbs: Shortcut to stop all currently running db daemona.s
del-dbs: $(addprefix del-,$(notdir $(wildcard cache/db.*)))
+# shutdown: Shortcut to stop all currently running daemons.
shutdown: del-switchs del-dbs
.PHONY: del-links del-switchs del-dbs shutdown
.SECONDEXPANSION:
-del-iface.%:
+# del-iface.<node_id>-<node_id>@<endpoint>:
+# Deletes the interface of link <node_id1>-<node_id2> on either
+# <node_id1> or <node_id2>, according to <endpoint>.
+#
+# We need a running db daemon to do this, but we do not have to
+# redo the delete if the db daemon is restarted.
+#
+# This also invalidates the local port of the tunnel and the endpoint
+# info on both sides of the tunnel. The link goes down.
+del-iface.%: | cache/db.$$(call get,%)
@echo "Removing interface for link $(call linkpart,$*) from $(call get,$*)"
@$(SSH) $(HOST_$(call get,$*)) \
$(SUDO) sliver-ovs del-port L$(call linkpart,$*)
- @rm -f cache/iface.$* cache/port.$* cache/endpoint.$* cache/endpoint.$(call opp,$*)
+ @rm -f cache/iface.$* \
+ cache/port.$* cache/endpoint.$* cache/endpoint.$(call opp,$*) \
+ L/$(call linkpart,$*)
### '%' here is leftid-rightid@{1,2}
#linkid=$(call linkpart,%)
#nodeid=$(call get,%)
#bridgefile=cache/bridge.$(nodeid)
-cache/iface.%: cache/bridge.$$(call get,%) | cache/switch.$$(call get,%)
+
+# cache/iface.<node_id1>-<node_id2>@<endpoint>:
+# Creates the interface for link <node_id1>-<node_id2> on
+# <node_id<endpoint>>.
+#
+# The bridge of the local node must already exist, and we need to create
+# the interface again if the bridge is re-created.
+# We also need a running db daemon, but we do not need to do anything
+# if the db daemon is restarted.
+cache/iface.%: cache/bridge.$$(call get,%) | cache/db.$$(call get,%)
@echo "Creating interface for link $(call linkpart,$(*F)) on $(call display,$(call get,$(*F))) - logs in $(call log,$@)"
@$(SSH) $(call solve,$(call get,$(*F))) $(SUDO) sliver-ovs create-port $(BRIDGE) \
L$(call linkpart,$(*F)) &> $(call log,$@) \
&& touch $@
+# cache/port.<node_id1>-<node_id2>@<endpoint>:
+# Retrieves the local port of link <node_id1>-<node_id2> on
+# node <node_id<endpoint>>.
+#
+# The local interface must have been created already and the
+# switch daemon must be running. We need to retrieve the port
+# number again if the interface is re-created, or the switch
+# daemon is restarted.
cache/port.%: cache/iface.% cache/switch.$$(call get,%)
@echo "Getting port number for link $(call linkpart,$(*F)) on $(call display,$(call get,$(*F))) - logs in $(call log,$@)"
@$(SSH) $(call solve,$(call get,$(*F))) $(SUDO) \
# nodeid=$(call get,%)
# iface1=cache/iface.%
# iface2=cache/iface.$(call opp,%)
+
+# cache/endpoint.<node_id1>-<node_id2>@<endpoint>:
+# Sets the other side (IP address, UDP port) info for link <node_id1>-<node_id2>
+# on <node_id<endpoint>>.
+#
+# We need the IP address and the UDP port of the other side and the interace of this side.
+# We need to set the info again if any of these change.
cache/endpoint.%: cache/host.$$(call rget,%) cache/port.$$(call opp,%) cache/iface.%
@echo "Setting port number of link $(call linkpart,$(*F)) on $(call display,$(call get,$(*F))) - logs in $(call log,$@)"
@$(SSH) $(call solve,$(call get,$(*F))) $(SUDO) sliver-ovs set-remote-endpoint L$(call linkpart,$(*F)) \
status.$(1): cache/status.$(1) FORCE
bridge.$(1): cache/bridge.$(1) FORCE
host.$(1): cache/host.$(1) FORCE
+controller.$(1): cache/controller.$(1) FORCE
# switch already depends on db, but well
cache/start.$(1): cache/db.$(1) cache/switch.$(1) FORCE
endef
git://git.onelab.eu / sliver-openvswitch.git / blobdiff