diff options
Diffstat (limited to 'vswitchd')
| -rw-r--r-- | vswitchd/bridge.c | 18 | ||||
| -rw-r--r-- | vswitchd/vswitch.xml | 15 |
2 files changed, 33 insertions, 0 deletions
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c index 35ee3e737..6a4ebe58d 100644 --- a/vswitchd/bridge.c +++ b/vswitchd/bridge.c @@ -148,6 +148,7 @@ static void bridge_add_ofproto_ports(struct bridge *); static void bridge_del_ofproto_ports(struct bridge *); static void bridge_refresh_ofp_port(struct bridge *); static void bridge_configure_datapath_id(struct bridge *); +static void bridge_configure_flow_eviction_threshold(struct bridge *); static void bridge_configure_netflow(struct bridge *); static void bridge_configure_sflow(struct bridge *, int *sflow_bridge_number); static void bridge_configure_remotes(struct bridge *, @@ -412,6 +413,7 @@ bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg) } bridge_configure_mirrors(br); bridge_configure_datapath_id(br); + bridge_configure_flow_eviction_threshold(br); bridge_configure_remotes(br, managers, n_managers); bridge_configure_netflow(br); bridge_configure_sflow(br, &sflow_bridge_number); @@ -962,6 +964,22 @@ bridge_get_other_config(const struct ovsrec_bridge *br_cfg, const char *key) &ovsrec_bridge_col_other_config, key); } +/* Set Flow eviction threshold */ +static void +bridge_configure_flow_eviction_threshold(struct bridge *br) +{ + const char *threshold_str; + unsigned threshold; + + threshold_str = bridge_get_other_config(br->cfg, "flow-eviction-threshold"); + if (threshold_str) { + threshold = strtoul(threshold_str, NULL, 10); + } else { + threshold = OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT; + } + ofproto_set_flow_eviction_threshold(br->ofproto, threshold); +} + static void bridge_pick_local_hw_addr(struct bridge *br, uint8_t ea[ETH_ADDR_LEN], struct iface **hw_addr_iface) diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml index e72401fdc..b3029eb26 100644 --- a/vswitchd/vswitch.xml +++ b/vswitchd/vswitch.xml @@ -438,6 +438,21 @@ does not have QoS configured, or if the port does not have a queue with the specified ID, the default queue is used instead. </dd> + <dt><code>flow-eviction-threshold</code></dt> + <dd> + A number of flows as a nonnegative integer. This sets number + of flows at which eviction from the kernel flow table will + be triggered. + If there are a large number of flows then increasing this + value to around the number of flows present + can result in reduced CPU usage and packet loss. + </dd> + <dd> + The default is 1000. + </dd> + <dd> + Values below 100 will be rounded up to 100. + </dd> </dl> </column> </group> |