Merge branch 'mainstream'

[sliver-openvswitch.git] / lib / ofp-actions.c

diff --git a/lib/ofp-actions.c b/lib/ofp-actions.c
index 77aa69c..54df17f 100644 (file)
--- a/lib/ofp-actions.c
+++ b/lib/ofp-actions.c
@@ -2117,6 +2117,30 @@ ofpacts_equal(const struct ofpact *a, size_t a_len,
 {
     return a_len == b_len && !memcmp(a, b, a_len);
 }
+
+/* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of
+ * 'ofpacts'.  If found, returns its meter ID; if not, returns 0.
+ *
+ * This function relies on the order of 'ofpacts' being correct (as checked by
+ * ofpacts_verify()). */
+uint32_t
+ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len)
+{
+    const struct ofpact *a;
+
+    OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
+        enum ovs_instruction_type inst;
+
+        inst = ovs_instruction_type_from_ofpact_type(a->type);
+        if (a->type == OFPACT_METER) {
+            return ofpact_get_METER(a)->meter_id;
+        } else if (inst > OVSINST_OFPIT13_METER) {
+            break;
+        }
+    }
+
+    return 0;
+}
 \f
 /* Formatting ofpacts. */