X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=vswitchd%2Fovs-vswitchd.conf.5.in;h=e7a1739711da8d84db41b5dd2e517f5ed4f51841;hb=55bc65533fe868666f6ea8539f2a1b30da964abf;hp=af3ff27f5ec37a3022a81c6590294cac690b5406;hpb=8398cf7efc3979cd6c8152915a584c13873ee322;p=openvswitch

diff --git a/vswitchd/ovs-vswitchd.conf.5.in b/vswitchd/ovs-vswitchd.conf.5.in
index af3ff27f..e7a17397 100644
--- a/vswitchd/ovs-vswitchd.conf.5.in
+++ b/vswitchd/ovs-vswitchd.conf.5.in
@@ -523,7 +523,8 @@ the connection to the controller stays down long enough, no packets
 can pass through the switch at all.
 .IP
 The first of these that is set takes effect.
-If the value is \fBstandalone\fR, \fBovs\-vswitchd\fR will take over
+If the value is \fBstandalone\fR, or if neither of these settings
+is set, \fBovs\-vswitchd\fR will take over
 responsibility for setting up
 flows when no message has been received from the controller for three
 times the inactivity probe interval (see above).  In this mode,
@@ -532,9 +533,8 @@ MAC-learning switch.  \fBovs\-vswitchd\fR will continue to retry connecting
 to the controller in the background and, when the connection succeeds,
 it discontinues its standalone behavior.
 .IP
-If this option is set to \fBsecure\fR, or if neither of these settings
-is set, \fBovs\-vswitchd\fR will not set up flows on its own when the
-controller connection fails.
+If this option is set to \fBsecure\fR, \fBovs\-vswitchd\fR will not
+set up flows on its own when the controller connection fails.
 .IP "\fBbridge.\fIname\fB.controller.max-backoff=\fIsecs\fR"
 Sets the maximum time between attempts to connect to the controller to
 \fIsecs\fR, which must be at least 1.  The actual interval between
@@ -546,6 +546,19 @@ These settings configure how the switch applies a ``token
 bucket'' to limit the rate at which packets in unknown flows are
 forwarded to the OpenFlow controller for flow-setup processing.  This
 feature prevents a single bridge from overwhelming a controller.
+.PP
+In addition, when a high rate triggers rate-limiting,
+\fBovs\-vswitchd\fR queues controller packets for each port and
+transmits them to the controller at the configured rate.  The number
+of queued packets is limited by a ``burst size'' parameter.  The
+packet queue is shared fairly among the ports on a bridge.
+.PP
+\fBovs\-vswitchd\fR maintains two such packet rate-limiters per
+bridge.  One of these applies to packets sent up to the controller
+because they do not correspond to any flow.  The other applies to
+packets sent up to the controller by request through flow actions.
+When both rate-limiters are filled with packets, the actual rate that
+packets are sent to the controller is up to twice the specified rate.
 .IP "\fBbridge.\fIname\fB.controller.rate-limit=\fIrate\fR"
 .IQ "\fBmgmt.rate-limit=\fIrate\fR"
 Limits the maximum rate at which packets will be forwarded to the