[ovs-discuss] [ACLv2 01/19] ofproto: Add ofproto_delete_flows_wildcarded function.

[Jesse Gross]

This functions deletes groups of flows if they match a particular
wildcard.  This is needed to efficiently clean out old flow entries
that were locally added.
---
 ofproto/ofproto.c |   18 ++++++++++++++++++
 ofproto/ofproto.h |    2 ++
 2 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c
index 55eb2c2..38960ee 100644
--- a/ofproto/ofproto.c
+++ b/ofproto/ofproto.c
@@ -1008,6 +1008,24 @@ ofproto_delete_flow(struct ofproto *ofproto, const flow_t *flow,
 }
 
 static void
+delete_wild_cb(struct cls_rule *rule, void *ofproto_)
+{
+    struct ofproto *ofproto = ofproto_;
+    rule_remove(ofproto, rule_from_cls_rule(rule));
+}
+
+void
+ofproto_delete_flows_wildcarded(struct ofproto *ofproto, const flow_t *flow,
+                               uint32_t wildcards)
+{
+    struct cls_rule cls_rule;
+
+    cls_rule_from_flow(&cls_rule, flow, wildcards, 0);
+    classifier_for_each_match(&ofproto->cls, &cls_rule, CLS_INC_ALL,
+                              delete_wild_cb, ofproto);
+}
+
+static void
 destroy_rule(struct cls_rule *rule_, void *ofproto_)
 {
     struct rule *rule = rule_from_cls_rule(rule_);
diff --git a/ofproto/ofproto.h b/ofproto/ofproto.h
index f4c1b40..88ae701 100644
--- a/ofproto/ofproto.h
+++ b/ofproto/ofproto.h
@@ -91,6 +91,8 @@ void ofproto_add_flow(struct ofproto *, const flow_t *, uint32_t wildcards,
                       int idle_timeout);
 void ofproto_delete_flow(struct ofproto *, const flow_t *, uint32_t wildcards,
                          unsigned int priority);
+void ofproto_delete_flows_wildcarded(struct ofproto *, const flow_t *,
+                                    uint32_t wildcards);
 void ofproto_flush_flows(struct ofproto *);
 
 /* Hooks for ovs-vswitchd. */
-- 
1.6.0.4