Enable handling of create2/extend2/created2/extended2

src/or/command.c

@@ -133,11 +133,13 @@ command_process_cell(channel_t *chan, cell_t *cell)
   switch (cell->command) {
     case CELL_CREATE:
     case CELL_CREATE_FAST:
+    case CELL_CREATE2:
       ++stats_n_create_cells_processed;
       PROCESS_CELL(create, cell, chan);
       break;
     case CELL_CREATED:
     case CELL_CREATED_FAST:
+    case CELL_CREATED2:
       ++stats_n_created_cells_processed;
       PROCESS_CELL(created, cell, chan);
       break;

src/or/relay.c

@@ -1256,7 +1256,8 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
         connection_mark_and_flush(TO_CONN(conn));
       }
       return 0;
-    case RELAY_COMMAND_EXTEND: {
+    case RELAY_COMMAND_EXTEND:
+    case RELAY_COMMAND_EXTEND2: {
       static uint64_t total_n_extend=0, total_nonearly=0;
       total_n_extend++;
       if (rh.stream_id) {
@@ -1291,6 +1292,7 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
       return circuit_extend(cell, circ);
     }
     case RELAY_COMMAND_EXTENDED:
+    case RELAY_COMMAND_EXTENDED2:
       if (!layer_hint) {
         log_fn(LOG_PROTOCOL_WARN, LD_PROTOCOL,
                "'extended' unsupported at non-origin. Dropping.");