+/* Given a buffer 'b' that contains an array of OpenFlow ports of type
+ * 'ofp_version', writes a detailed description of each port into
+ * 'string'. */
+static void
+ofp_print_phy_ports(struct ds *string, uint8_t ofp_version,
+ struct ofpbuf *b)
+{
+ size_t n_ports;
+ struct ofputil_phy_port *ports;
+ enum ofperr error;
+ size_t i;
+
+ n_ports = ofputil_count_phy_ports(ofp_version, b);
+
+ ports = xmalloc(n_ports * sizeof *ports);
+ for (i = 0; i < n_ports; i++) {
+ error = ofputil_pull_phy_port(ofp_version, b, &ports[i]);
+ if (error) {
+ ofp_print_error(string, error);
+ goto exit;
+ }
+ }
+ qsort(ports, n_ports, sizeof *ports, compare_ports);
+ for (i = 0; i < n_ports; i++) {
+ ofp_print_phy_port(string, &ports[i]);
+ }
+
+exit:
+ free(ports);
+}
+