X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=lib%2Flearn.c;h=606ea9ed0b0bf29e6f5ea2154bd44955ac7ab726;hb=bcd2633a5be;hp=ab403bee5686f6d17c6f95a546a8a75ddbd8fcda;hpb=368eefac37c490ad4f63e5d40deb94c724cf25c5;p=cascardo%2Fovs.git

diff --git a/lib/learn.c b/lib/learn.c
index ab403bee5..606ea9ed0 100644
--- 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)
 {