Add support for OFPFC_MODIFY Flow Mod command.

[openvswitch] / datapath / table-linear.c

diff --git a/datapath/table-linear.c b/datapath/table-linear.c
index a22776a303f748a8daad2aaccce249669c9f3a50..4a10df550373a2cee35d84734a66404218d74f32 100644 (file)
--- a/datapath/table-linear.c
+++ b/datapath/table-linear.c
@@ -10,7 +10,7 @@
 
 #include <linux/rcupdate.h>
 #include <linux/slab.h>
-#include <linux/list.h>
+#include <linux/rculist.h>
 
 struct sw_table_linear {
        struct sw_table swt;
@@ -28,7 +28,7 @@ static struct sw_flow *table_linear_lookup(struct sw_table *swt,
        struct sw_table_linear *tl = (struct sw_table_linear *) swt;
        struct sw_flow *flow;
        list_for_each_entry_rcu (flow, &tl->flows, node) {
-               if (flow_matches(&flow->key, key))
+               if (flow_matches_1wild(key, &flow->key))
                        return flow;
        }
        return NULL;
@@ -47,7 +47,12 @@ static int table_linear_insert(struct sw_table *swt, struct sw_flow *flow)
        list_for_each_entry (f, &tl->flows, node) {
                if (f->priority == flow->priority
                                && f->key.wildcards == flow->key.wildcards
-                               && flow_matches(&f->key, &flow->key)) {
+                               && flow_matches_2wild(&f->key, &flow->key)) {
+                       /* Keep stats from the original flow */
+                       flow->init_time = f->init_time;
+                       flow->packet_count = f->packet_count;
+                       flow->byte_count = f->byte_count;
+
                        flow->serial = f->serial;
                        list_replace_rcu(&f->node, &flow->node);
                        list_replace_rcu(&f->iter_node, &flow->iter_node);
@@ -72,6 +77,23 @@ static int table_linear_insert(struct sw_table *swt, struct sw_flow *flow)
        return 1;
 }
 
+static int table_linear_modify(struct sw_table *swt,
+                               const struct sw_flow_key *key,
+                               const struct ofp_action *actions, int n_actions)
+{
+       struct sw_table_linear *tl = (struct sw_table_linear *) swt;
+       struct sw_flow *flow;
+       unsigned int count = 0;
+
+       list_for_each_entry (flow, &tl->flows, node) {
+               if (flow_matches_1wild(&flow->key, key)) {
+                       flow_replace_acts(flow, actions, n_actions);
+                       count++;
+               }
+       }
+       return count;
+}
+
 static int do_delete(struct sw_table *swt, struct sw_flow *flow) 
 {
        list_del_rcu(&flow->node);
@@ -104,10 +126,10 @@ static int table_linear_timeout(struct datapath *dp, struct sw_table *swt)
 
        mutex_lock(&dp_mutex);
        list_for_each_entry (flow, &tl->flows, node) {
-               if (flow_timeout(flow)) {
+               int reason = flow_timeout(flow);
+               if (reason >= 0) {
                        count += do_delete(swt, flow);
-                       if (dp->flags & OFPC_SEND_FLOW_EXP)
-                               dp_send_flow_expired(dp, flow);
+                       dp_send_flow_expired(dp, flow, reason);
                }
        }
        tl->n_flows -= count;
@@ -140,7 +162,8 @@ static int table_linear_iterate(struct sw_table *swt,
 
        start = position->private[0];
        list_for_each_entry (flow, &tl->iter_flows, iter_node) {
-               if (flow->serial >= start && flow_matches(key, &flow->key)) {
+               if (flow->serial >= start
+                   && flow_matches_2wild(key, &flow->key)) {
                        int error = callback(flow, private);
                        if (error) {
                                position->private[0] = flow->serial;
@@ -156,8 +179,10 @@ static void table_linear_stats(struct sw_table *swt,
 {
        struct sw_table_linear *tl = (struct sw_table_linear *) swt;
        stats->name = "linear";
-       stats->n_flows = tl->n_flows;
+       stats->wildcards = OFPFW_ALL;
+       stats->n_flows   = tl->n_flows;
        stats->max_flows = tl->max_flows;
+       stats->n_matched = swt->n_matched;
 }
 
 
@@ -173,6 +198,7 @@ struct sw_table *table_linear_create(unsigned int max_flows)
        swt = &tl->swt;
        swt->lookup = table_linear_lookup;
        swt->insert = table_linear_insert;
+       swt->modify = table_linear_modify;
        swt->delete = table_linear_delete;
        swt->timeout = table_linear_timeout;
        swt->destroy = table_linear_destroy;