ena: Amazon Elastic Network Adapter (ENA) native driver

Type: feature
Change-Id: Icd9de05f2cbac0e5a6dfb1f1414f21dc4b893104
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/src/plugins/dev_ena/port.c b/src/plugins/dev_ena/port.c
new file mode 100644
index 00000000000..2b26fefc5e3
--- /dev/null
+++ b/src/plugins/dev_ena/port.c
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) 2023 Cisco Systems, Inc.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/dev/dev.h>
+#include <vnet/dev/pci.h>
+#include <dev_ena/ena.h>
+#include <dev_ena/ena_inlines.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+
+VLIB_REGISTER_LOG_CLASS (ena_log, static) = {
+  .class_name = "ena",
+  .subclass_name = "port",
+};
+
+vnet_dev_rv_t
+ena_port_init (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+
+  log_debug (dev, "port %u", port->port_id);
+
+  return VNET_DEV_OK;
+}
+
+vnet_dev_rv_t
+ena_port_start (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  vnet_dev_t *dev = port->dev;
+  vnet_dev_rv_t rv;
+
+  log_debug (dev, "port start: port %u", port->port_id);
+
+  if (ena_aq_feature_is_supported (dev, ENA_ADMIN_FEAT_ID_MTU))
+    {
+      ena_aq_feat_mtu_t mtu = { .mtu = port->max_rx_frame_size };
+
+      if ((rv = ena_aq_set_feature (vm, dev, ENA_ADMIN_FEAT_ID_MTU, &mtu)))
+	return rv;
+    }
+
+  if ((rv = vnet_dev_port_start_all_rx_queues (vm, port)))
+    return rv;
+
+  if ((rv = vnet_dev_port_start_all_tx_queues (vm, port)))
+    return rv;
+
+  return VNET_DEV_OK;
+}
+
+void
+ena_port_stop (vlib_main_t *vm, vnet_dev_port_t *port)
+{
+  log_debug (port->dev, "port stop: port %u", port->port_id);
+}
+
+vnet_dev_rv_t
+ena_port_cfg_change_validate (vlib_main_t *vm, vnet_dev_port_t *port,
+			      vnet_dev_port_cfg_change_req_t *req)
+{
+  vnet_dev_rv_t rv = VNET_DEV_OK;
+
+  switch (req->type)
+    {
+    case VNET_DEV_PORT_CFG_MAX_RX_FRAME_SIZE:
+      if (port->started)
+	rv = VNET_DEV_ERR_PORT_STARTED;
+      break;
+
+    default:
+      rv = VNET_DEV_ERR_NOT_SUPPORTED;
+    };
+
+  return rv;
+}
+
+vnet_dev_rv_t
+ena_port_cfg_change (vlib_main_t *vm, vnet_dev_port_t *port,
+		     vnet_dev_port_cfg_change_req_t *req)
+{
+  vnet_dev_rv_t rv = VNET_DEV_OK;
+
+  switch (req->type)
+    {
+    case VNET_DEV_PORT_CFG_MAX_RX_FRAME_SIZE:
+      break;
+
+    default:
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    };
+
+  return rv;
+}