ofproto-dpif: Use sequence number to wake up main thread for

[sliver-openvswitch.git] / utilities / ovs-ctl.in

diff --git a/utilities/ovs-ctl.in b/utilities/ovs-ctl.in
index 5ad5f26..0735160 100755 (executable)
--- a/utilities/ovs-ctl.in
+++ b/utilities/ovs-ctl.in
@@ -30,7 +30,7 @@ done
 ## start ##
 ## ----- ##
 
-insert_openvswitch_mod_if_required () {
+insert_mod_if_required () {
     # If openvswitch is already loaded then we're done.
     test -e /sys/module/openvswitch -o -e /sys/module/openvswitch_mod && \
      return 0
@@ -52,10 +52,6 @@ insert_openvswitch_mod_if_required () {
     action "Inserting openvswitch module" modprobe openvswitch
 }
 
-insert_mod_if_required () {
-    insert_openvswitch_mod_if_required || return 1
-}
-
 ovs_vsctl () {
     ovs-vsctl --no-wait "$@"
 }
@@ -188,7 +184,6 @@ start_ovsdb () {
         done
         set "$@" -vconsole:emer -vsyslog:err -vfile:info
         set "$@" --remote=punix:"$DB_SOCK"
-        set "$@" --remote=db:Open_vSwitch,Open_vSwitch,manager_options
         set "$@" --private-key=db:Open_vSwitch,SSL,private_key
         set "$@" --certificate=db:Open_vSwitch,SSL,certificate
         set "$@" --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert
@@ -207,6 +202,19 @@ start_ovsdb () {
     fi
 }
 
+add_managers () {
+    # Now that ovs-vswitchd has started and completed its initial
+    # configuration, tell ovsdb-server to conenct to the remote managers.  We
+    # used to do this at ovsdb-server startup time, but waiting for
+    # ovs-vswitchd to finish configuring means that remote managers see less
+    # churn in the database at startup or restart.  (For example, managers
+    # won't briefly see empty datapath-id or ofport columns for records that
+    # exist at startup.)
+    action "Enabling remote OVSDB managers" \
+       ovs-appctl -t ovsdb-server ovsdb-server/add-remote \
+           db:Open_vSwitch,Open_vSwitch,manager_options
+}
+
 start_forwarding () {
     check_force_cores
 
@@ -216,10 +224,10 @@ start_forwarding () {
         log_success_msg "ovs-vswitchd is already running"
     else
         # Increase the limit on the number of open file descriptors.
-        # On Linux, ovs-vswitchd needs about one file descriptor per
-        # switch port, so this allows a very large number of switch
-        # ports.
-        ulimit -n 5000
+        # On Linux, ovs-vswitchd needs about three file descriptors
+        # per bridge and one file descriptor per bridge port, so this
+        # allows a very large number of bridges and ports.
+        ulimit -n 7500
 
            # Start ovs-vswitchd.
            set ovs-vswitchd unix:"$DB_SOCK"
@@ -298,6 +306,15 @@ restore_ofports () {
         action "Restoring ofport values" "${script_ofports}"
 }
 
+flow_restore_wait () {
+    ovs_vsctl set open_vswitch . other_config:flow-restore-wait="true"
+}
+
+flow_restore_complete () {
+    ovs_vsctl --if-exists remove open_vswitch . other_config \
+        flow-restore-wait="true"
+}
+
 restore_flows () {
     [ -x "${script_flows}" ] && \
         action "Restoring saved flows" "${script_flows}"
@@ -349,6 +366,7 @@ force_reload_kmod () {
     else
         log_warning_msg "Failed to save configuration, not replacing kernel module"
         start_forwarding
+        add_managers
         exit 1
     fi
     chmod +x "$script_interfaces"
@@ -364,9 +382,14 @@ force_reload_kmod () {
         action "Removing openvswitch module" rmmod openvswitch
     fi
 
+    # Start vswitchd by asking it to wait till flow restore is finished.
+    flow_restore_wait
     start_forwarding
 
+    # Restore saved flows and inform vswitchd that we are done.
     restore_flows
+    flow_restore_complete
+    add_managers
 
     restore_interfaces
 
@@ -408,10 +431,15 @@ restart () {
     restore_ofports
 
     stop_forwarding
+
+    # Start vswitchd by asking it to wait till flow restore is finished.
+    flow_restore_wait
     start_forwarding
 
-    # Restore the saved flows.
+    # Restore saved flows and inform vswitchd that we are done.
     restore_flows
+    flow_restore_complete
+    add_managers
 
     # Restore the interfaces if required. Return true even if restore fails.
     restore_interfaces || true
@@ -658,6 +686,7 @@ case $command in
     start)
         start_ovsdb
         start_forwarding
+        add_managers
         ;;
     stop)
         stop_forwarding