ofproto-dpif: Store relevant fields for wildcarding in facet.

[cascardo/ovs.git] / lib / learn.c

diff --git a/lib/learn.c b/lib/learn.c
index ab403be..606ea9e 100644 (file)
--- a/lib/learn.c
+++ b/lib/learn.c
@@ -374,6 +374,22 @@ learn_execute(const struct ofpact_learn *learn, const struct flow *flow,
     fm->ofpacts_len = ofpacts->size;
 }
 
+/* Perform a bitwise-OR on 'wc''s fields that are relevant as sources in
+ * the learn action 'learn'. */
+void
+learn_mask(const struct ofpact_learn *learn, struct flow_wildcards *wc)
+{
+    const struct ofpact_learn_spec *spec;
+    union mf_subvalue value;
+
+    memset(&value, 0xff, sizeof value);
+    for (spec = learn->specs; spec < &learn->specs[learn->n_specs]; spec++) {
+        if (spec->src_type == NX_LEARN_SRC_FIELD) {
+            mf_write_subfield_flow(&spec->src, &value, &wc->masks);
+        }
+    }
+}
+
 static void
 learn_parse_load_immediate(const char *s, struct ofpact_learn_spec *spec)
 {