Add native NETMAP driver

This is first drop of native NETMAP driver.
It is mainly tested with NETMAP pipes but also
support for native interfaces should work.

New CLI:
create netmap [<intf name>|valeXXX:YYY] [hw-addr <mac>] [pipe]
[master|slave]

Following example creates NETMAP pipe where VPP acts as master:

 create netmap name vale00:vpp1 pipe master

then NETMAP pkt-gen tool can be used to send traffic:

 pkt-gen -i vale00:vpp1}0  -f tx

Change-Id: Ie0ddaa5facc75285b78467420e8a9f9c8dfc39e5
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 121 insertions, 0 deletions

diff --git a/vnet/vnet/devices/netmap/cli.c b/vnet/vnet/devices/netmap/cli.c
new file mode 100644
index 00000000000..9c8fb783326
--- /dev/null
+++ b/vnet/vnet/devices/netmap/cli.c
@@ -0,0 +1,121 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2016 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 <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <vnet/devices/netmap/netmap.h>
+
+static clib_error_t *
+netmap_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;
+  u8 * host_if_name = NULL;
+  u8 hwaddr [6];
+  u8 * hw_addr_ptr = 0;
+  int r;
+  u8 is_pipe = 0;
+  u8 is_master = 0;
+
+  /* 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, "name %s", &host_if_name))
+	;
+      else if (unformat (line_input, "hw-addr %U", unformat_ethernet_address, hwaddr))
+	hw_addr_ptr = hwaddr;
+      else if (unformat (line_input, "pipe"))
+	is_pipe = 1;
+      else if (unformat (line_input, "master"))
+	is_master = 1;
+      else if (unformat (line_input, "slave"))
+	is_master = 0;
+      else
+	return clib_error_return (0, "unknown input `%U'", format_unformat_error, input);
+    }
+  unformat_free (line_input);
+
+  if (host_if_name == NULL)
+      return clib_error_return (0, "missing host interface name");
+
+  r = netmap_create_if(vm, host_if_name, hw_addr_ptr, is_pipe, is_master);
+
+  if (r == VNET_API_ERROR_SYSCALL_ERROR_1)
+    return clib_error_return(0, "%s (errno %d)", strerror (errno), errno);
+
+  if (r == VNET_API_ERROR_INVALID_INTERFACE)
+    return clib_error_return(0, "Invalid interface name");
+
+  if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS)
+    return clib_error_return(0, "Interface elready exists");
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (netmap_create_command, static) = {
+  .path = "create netmap",
+  .short_help = "create netmap name [<intf name>|valeXXX:YYY] "
+    "[hw-addr <mac>] [pipe] [master|slave]",
+  .function = netmap_create_command_fn,
+};
+
+static clib_error_t *
+netmap_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;
+  u8 * host_if_name = NULL;
+
+  /* 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, "name %s", &host_if_name))
+        ;
+      else
+        return clib_error_return (0, "unknown input `%U'", format_unformat_error, input);
+    }
+  unformat_free (line_input);
+
+  if (host_if_name == NULL)
+      return clib_error_return (0, "missing host interface name");
+
+  netmap_delete_if(vm, host_if_name);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (netmap_delete_command, static) = {
+  .path = "delete netmap",
+  .short_help = "delete netmap name <interface name>",
+  .function = netmap_delete_command_fn,
+};
+
+clib_error_t *
+netmap_cli_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (netmap_cli_init);