virtio: Native virtio driver

Change-Id: Id7fccf2f805e578fb05032aeb2b649a74c3c0e56
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

1 files changed, 208 insertions, 0 deletions

diff --git a/src/vnet/devices/virtio/cli.c b/src/vnet/devices/virtio/cli.c
new file mode 100644
index 00000000000..82dc5a117b8
--- /dev/null
+++ b/src/vnet/devices/virtio/cli.c
@@ -0,0 +1,208 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+#include <stdint.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <inttypes.h>
+
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlib/pci/pci.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/devices/virtio/virtio.h>
+#include <vnet/devices/virtio/pci.h>
+
+static clib_error_t *
+virtio_pci_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
+			      vlib_cli_command_t * cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  virtio_pci_create_if_args_t args;
+  u32 tmp;
+  u64 feature_mask = (u64) ~ (0ULL);
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  memset (&args, 0, sizeof (args));
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "%U", unformat_vlib_pci_addr, &args.addr))
+	;
+      else if (unformat (line_input, "feature-mask 0x%llx", &feature_mask))
+	args.features = feature_mask;
+      else if (unformat (line_input, "rx-queue-size %u", &tmp))
+	args.rxq_size = tmp;
+      else if (unformat (line_input, "tx-queue-size %u", &tmp))
+	args.txq_size = tmp;
+      else
+	return clib_error_return (0, "unknown input `%U'",
+				  format_unformat_error, input);
+    }
+  unformat_free (line_input);
+
+  virtio_pci_create_if (vm, &args);
+
+  return args.error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (virtio_pci_create_command, static) = {
+  .path = "create interface virtio",
+  .short_help = "create interface virtio <pci-address>"
+                "[feature-mask <hex-mask>] [rx-queue-size <size>] [tx-queue-size <size>]",
+  .function = virtio_pci_create_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+virtio_pci_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
+			      vlib_cli_command_t * cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 sw_if_index = ~0;
+  vnet_hw_interface_t *hw;
+  virtio_main_t *vmxm = &virtio_main;
+  virtio_if_t *vif;
+  vnet_main_t *vnm = vnet_get_main ();
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "sw_if_index %d", &sw_if_index))
+	;
+      else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
+			 vnm, &sw_if_index))
+	;
+      else
+	return clib_error_return (0, "unknown input `%U'",
+				  format_unformat_error, input);
+    }
+  unformat_free (line_input);
+
+  if (sw_if_index == ~0)
+    return clib_error_return (0,
+			      "please specify interface name or sw_if_index");
+
+  hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
+  if (hw == NULL || virtio_device_class.index != hw->dev_class_index)
+    return clib_error_return (0, "not a virtio interface");
+
+  vif = pool_elt_at_index (vmxm->interfaces, hw->dev_instance);
+
+  if (virtio_pci_delete_if (vm, vif) < 0)
+    return clib_error_return (0, "not a virtio pci interface");
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (virtio_pci_delete_command, static) = {
+  .path = "delete interface virtio",
+  .short_help = "delete interface virtio"
+    "{<interface> | sw_if_index <sw_idx>}",
+  .function = virtio_pci_delete_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+show_virtio_pci_fn (vlib_main_t * vm, unformat_input_t * input,
+		    vlib_cli_command_t * cmd)
+{
+  virtio_main_t *vmxm = &virtio_main;
+  vnet_main_t *vnm = &vnet_main;
+  virtio_if_t *vif;
+  clib_error_t *error = 0;
+  u32 hw_if_index, *hw_if_indices = 0;
+  vnet_hw_interface_t *hi;
+  u8 show_descr = 0, show_device_config = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat
+	  (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
+	{
+	  hi = vnet_get_hw_interface (vnm, hw_if_index);
+	  if (virtio_device_class.index != hi->dev_class_index)
+	    {
+	      error = clib_error_return (0, "unknown input `%U'",
+					 format_unformat_error, input);
+	      goto done;
+	    }
+	  vec_add1 (hw_if_indices, hw_if_index);
+	}
+      else if (unformat (input, "descriptors") || unformat (input, "desc"))
+	show_descr = 1;
+      else if (unformat (input, "debug-device"))
+	show_device_config = 1;
+      else
+	{
+	  error = clib_error_return (0, "unknown input `%U'",
+				     format_unformat_error, input);
+	  goto done;
+	}
+    }
+
+  if (vec_len (hw_if_indices) == 0)
+    {
+      pool_foreach (vif, vmxm->interfaces,
+		    vec_add1 (hw_if_indices, vif->hw_if_index);
+	);
+    }
+  else if (show_device_config)
+    {
+      vif = pool_elt_at_index (vmxm->interfaces, hi->dev_instance);
+      if (vif->type == VIRTIO_IF_TYPE_PCI)
+	debug_device_config_space (vm, vif);
+    }
+
+  virtio_show (vm, hw_if_indices, show_descr, VIRTIO_IF_TYPE_PCI);
+
+done:
+  vec_free (hw_if_indices);
+  return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_virtio_pci_command, static) = {
+  .path = "show virtio pci",
+  .short_help = "show virtio pci [<interface>] [descriptors | desc] [debug-device]",
+  .function = show_virtio_pci_fn,
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+virtio_pci_cli_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (virtio_pci_cli_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */