ofp-prop: Add helper for parsing and storing of ovs_u128.

Add helper methods that allow us to store and parse the
ovs_u128 type.

Signed-off-by: Ales Musil <amusil@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

include/openvswitch/ofp-prop.h

@@ -84,10 +84,12 @@ enum ofperr ofpprop_pull(struct ofpbuf *msg, struct ofpbuf *property,
 enum ofperr ofpprop_parse_be16(const struct ofpbuf *, ovs_be16 *value);
 enum ofperr ofpprop_parse_be32(const struct ofpbuf *, ovs_be32 *value);
 enum ofperr ofpprop_parse_be64(const struct ofpbuf *, ovs_be64 *value);
+enum ofperr ofpprop_parse_be128(const struct ofpbuf *, ovs_be128 *value);
 enum ofperr ofpprop_parse_u8(const struct ofpbuf *, uint8_t *value);
 enum ofperr ofpprop_parse_u16(const struct ofpbuf *, uint16_t *value);
 enum ofperr ofpprop_parse_u32(const struct ofpbuf *, uint32_t *value);
 enum ofperr ofpprop_parse_u64(const struct ofpbuf *, uint64_t *value);
+enum ofperr ofpprop_parse_u128(const struct ofpbuf *, ovs_u128 *value);
 enum ofperr ofpprop_parse_uuid(const struct ofpbuf *, struct uuid *);
 enum ofperr ofpprop_parse_nested(const struct ofpbuf *, struct ofpbuf *);
 
@@ -98,10 +100,12 @@ void *ofpprop_put_zeros(struct ofpbuf *, uint64_t type, size_t len);
 void ofpprop_put_be16(struct ofpbuf *, uint64_t type, ovs_be16 value);
 void ofpprop_put_be32(struct ofpbuf *, uint64_t type, ovs_be32 value);
 void ofpprop_put_be64(struct ofpbuf *, uint64_t type, ovs_be64 value);
+void ofpprop_put_be128(struct ofpbuf *, uint64_t type, ovs_be128 value);
 void ofpprop_put_u8(struct ofpbuf *, uint64_t type, uint8_t value);
 void ofpprop_put_u16(struct ofpbuf *, uint64_t type, uint16_t value);
 void ofpprop_put_u32(struct ofpbuf *, uint64_t type, uint32_t value);
 void ofpprop_put_u64(struct ofpbuf *, uint64_t type, uint64_t value);
+void ofpprop_put_u128(struct ofpbuf *, uint64_t type, ovs_u128 value);
 void ofpprop_put_bitmap(struct ofpbuf *, uint64_t type, uint64_t bitmap);
 void ofpprop_put_flag(struct ofpbuf *, uint64_t type);
 void ofpprop_put_uuid(struct ofpbuf *, uint64_t type, const struct uuid *);

lib/ofp-prop.c

@@ -184,6 +184,20 @@ ofpprop_parse_be64(const struct ofpbuf *property, ovs_be64 *value)
     return 0;
 }
 
+/* Attempts to parse 'property' as a property containing a 128-bit value.  If
+ * successful, stores the value into '*value' and returns 0; otherwise returns
+ * an OpenFlow error. */
+enum ofperr
+ofpprop_parse_be128(const struct ofpbuf *property, ovs_be128 *value)
+{
+    ovs_be128 *p = property->msg;
+    if (ofpbuf_msgsize(property) != sizeof *p) {
+        return OFPERR_OFPBPC_BAD_LEN;
+    }
+    *value = *p;
+    return 0;
+}
+
 /* Attempts to parse 'property' as a property containing a 8-bit value.  If
  * successful, stores the value into '*value' and returns 0; otherwise returns
  * an OpenFlow error. */
@@ -250,6 +264,20 @@ ofpprop_parse_u64(const struct ofpbuf *property, uint64_t *value)
     return 0;
 }
 
+/* Attempts to parse 'property' as a property containing a 128-bit value.  If
+ * successful, stores the value into '*value' and returns 0; otherwise returns
+ * an OpenFlow error. */
+enum ofperr
+ofpprop_parse_u128(const struct ofpbuf *property, ovs_u128 *value)
+{
+    ovs_be128 *p = property->msg;
+    if (ofpbuf_msgsize(property) != sizeof *p) {
+        return OFPERR_OFPBPC_BAD_LEN;
+    }
+    *value = ntoh128(*p);
+    return 0;
+}
+
 /* Attempts to parse 'property' as a property containing a UUID.  If
  * successful, stores the value into '*uuid' and returns 0; otherwise returns
  * an OpenFlow error. */
@@ -351,6 +379,13 @@ ofpprop_put_be64(struct ofpbuf *msg, uint64_t type, ovs_be64 value)
     ofpprop_end(msg, start);
 }
 
+/* Adds a property with the given 'type' and 128-bit 'value' to 'msg'. */
+void
+ofpprop_put_be128(struct ofpbuf *msg, uint64_t type, ovs_be128 value)
+{
+    ofpprop_put(msg, type, &value, sizeof value);
+}
+
 /* Adds a property with the given 'type' and 8-bit 'value' to 'msg'. */
 void
 ofpprop_put_u8(struct ofpbuf *msg, uint64_t type, uint8_t value)
@@ -381,6 +416,13 @@ ofpprop_put_u64(struct ofpbuf *msg, uint64_t type, uint64_t value)
     ofpprop_put_be64(msg, type, htonll(value));
 }
 
+/* Adds a property with the given 'type' and 128-bit 'value' to 'msg'. */
+void
+ofpprop_put_u128(struct ofpbuf *msg, uint64_t type, ovs_u128 value)
+{
+    ofpprop_put_be128(msg, type, hton128(value));
+}
+
 /* Appends a property to 'msg' whose type is 'type' and whose contents is a
  * series of property headers, one for each 1-bit in 'bitmap'. */
 void