ofproto: Allow ->rule_choose_table() to be NULL regardless of table count.

[sliver-openvswitch.git] / ofproto / ofproto.c

diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c
index 201488d..8d22c50 100644 (file)
--- a/ofproto/ofproto.c
+++ b/ofproto/ofproto.c
@@ -290,7 +290,9 @@ ofproto_create(const char *datapath_name, const char *datapath_type,
 {
     const struct ofproto_class *class;
     struct ofproto *ofproto;
+    int n_tables;
     int error;
+    int i;
 
     *ofprotop = NULL;
 
@@ -320,6 +322,8 @@ ofproto_create(const char *datapath_name, const char *datapath_type,
     hmap_insert(&all_ofprotos, &ofproto->hmap_node,
                 hash_string(ofproto->name, 0));
     ofproto->datapath_id = 0;
+    ofproto_set_flow_eviction_threshold(ofproto,
+                                        OFPROTO_FLOW_EVICTON_THRESHOLD_DEFAULT);
     ofproto->fallback_dpid = pick_fallback_dpid();
     ofproto->mfr_desc = xstrdup(DEFAULT_MFR_DESC);
     ofproto->hw_desc = xstrdup(DEFAULT_HW_DESC);
@@ -335,14 +339,20 @@ ofproto_create(const char *datapath_name, const char *datapath_type,
     list_init(&ofproto->pending);
     hmap_init(&ofproto->deletions);
 
-    error = ofproto->ofproto_class->construct(ofproto);
+    error = ofproto->ofproto_class->construct(ofproto, &n_tables);
     if (error) {
         VLOG_ERR("failed to open datapath %s: %s",
                  datapath_name, strerror(error));
         ofproto_destroy__(ofproto);
         return error;
     }
-    assert(ofproto->n_tables > 0);
+
+    assert(n_tables >= 1 && n_tables <= 255);
+    ofproto->n_tables = n_tables;
+    ofproto->tables = xmalloc(n_tables * sizeof *ofproto->tables);
+    for (i = 0; i < n_tables; i++) {
+        classifier_init(&ofproto->tables[i]);
+    }
 
     ofproto->datapath_id = pick_datapath_id(ofproto);
     VLOG_INFO("using datapath ID %016"PRIx64, ofproto->datapath_id);
@@ -407,6 +417,18 @@ ofproto_set_in_band_queue(struct ofproto *ofproto, int queue_id)
     connmgr_set_in_band_queue(ofproto->connmgr, queue_id);
 }
 
+/* Sets the number of flows at which eviction from the kernel flow table
+ * will occur. */
+void
+ofproto_set_flow_eviction_threshold(struct ofproto *ofproto, unsigned threshold)
+{
+    if (threshold < OFPROTO_FLOW_EVICTION_THRESHOLD_MIN) {
+        ofproto->flow_eviction_threshold = OFPROTO_FLOW_EVICTION_THRESHOLD_MIN;
+    } else {
+        ofproto->flow_eviction_threshold = threshold;
+    }
+}
+
 void
 ofproto_set_desc(struct ofproto *p,
                  const char *mfr_desc, const char *hw_desc,
@@ -1093,17 +1115,11 @@ static struct netdev *
 ofport_open(const struct ofproto_port *ofproto_port, struct ofp_phy_port *opp)
 {
     uint32_t curr, advertised, supported, peer;
-    struct netdev_options netdev_options;
     enum netdev_flags flags;
     struct netdev *netdev;
     int error;
 
-    memset(&netdev_options, 0, sizeof netdev_options);
-    netdev_options.name = ofproto_port->name;
-    netdev_options.type = ofproto_port->type;
-    netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
-
-    error = netdev_open(&netdev_options, &netdev);
+    error = netdev_open(ofproto_port->name, ofproto_port->type, &netdev);
     if (error) {
         VLOG_WARN_RL(&rl, "ignoring port %s (%"PRIu16") because netdev %s "
                      "cannot be opened (%s)",
@@ -2166,7 +2182,7 @@ add_flow(struct ofproto *ofproto, struct ofconn *ofconn, struct flow_mod *fm,
     /* Pick table. */
     if (fm->table_id == 0xff) {
         uint8_t table_id;
-        if (ofproto->n_tables > 1) {
+        if (ofproto->ofproto_class->rule_choose_table) {
             error = ofproto->ofproto_class->rule_choose_table(ofproto, &fm->cr,
                                                               &table_id);
             if (error) {