P2P Ethernet - API

API for P2P Ethernet feature

Change-Id: Id0280f42b9ce2428262e79c4dc309595037cd10e
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>

4 files changed, 302 insertions, 0 deletions

diff --git a/src/vnet/ethernet/p2p_ethernet.api b/src/vnet/ethernet/p2p_ethernet.api
new file mode 100644
index 00000000..72a73423
--- /dev/null
+++ b/src/vnet/ethernet/p2p_ethernet.api
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2015-2016 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.
+ */
+
+define p2p_ethernet_add
+{
+  u32 client_index;
+  u32 context;
+  u32 parent_if_index;
+  u8  remote_mac[6];
+};
+
+define p2p_ethernet_add_reply
+{
+  u32 context;
+  i32 retval;
+  u32 sw_if_index;
+};
+
+define p2p_ethernet_del
+{
+  u32 client_index;
+  u32 context;
+  u32 parent_if_index;
+  u8  remote_mac[6];
+};
+
+define p2p_ethernet_del_reply
+{
+  u32 context;
+  i32 retval;
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
\ No newline at end of file
diff --git a/src/vnet/ethernet/p2p_ethernet.c b/src/vnet/ethernet/p2p_ethernet.c
new file mode 100644
index 00000000..3c077318
--- /dev/null
+++ b/src/vnet/ethernet/p2p_ethernet.c
@@ -0,0 +1,102 @@
+/*
+ * p2p_ethernet.c: p2p ethernet
+ *
+ * Copyright (c) 2012 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 <vppinfra/bihash_16_8.h>
+#include <vnet/vnet.h>
+#include <vnet/ethernet/p2p_ethernet.h>
+
+int
+p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index,
+		      u8 * client_mac, int is_add)
+{
+  return 0;
+}
+
+static clib_error_t *
+vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
+			   vlib_cli_command_t * cmd)
+{
+  vnet_main_t *vnm = vnet_get_main ();
+
+  int is_add = 1;
+  int remote_mac = 0;
+  u32 hw_if_index = ~0;
+  u8 client_mac[6];
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat
+	  (input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index))
+	;
+      else if (unformat (input, "%U", unformat_ethernet_address, &client_mac))
+	remote_mac = 1;
+      else if (unformat (input, "del"))
+	is_add = 0;
+      else
+	break;
+    }
+
+  if (hw_if_index == ~0)
+    return clib_error_return (0, "Please specify parent interface ...");
+  if (!remote_mac)
+    return clib_error_return (0, "Please specify client MAC address ...");
+
+  u32 rv;
+  rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, is_add);
+  switch (rv)
+    {
+    case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED:
+      return clib_error_return (0,
+				"not allowed as parent interface belongs to a BondEthernet interface");
+    case -1:
+      return clib_error_return (0,
+				"p2p ethernet for given parent interface and client mac already exists");
+    case -2:
+      return clib_error_return (0,
+				"couldn't create p2p ethernet subinterface");
+    case -3:
+      return clib_error_return (0,
+				"p2p ethernet for given parent interface and client mac doesn't exist");
+    default:
+      break;
+    }
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) =
+{
+  .path = "p2p_ethernet ",
+  .function = vnet_p2p_ethernet_add_del,
+  .short_help = "p2p_ethernet <intfc> <mac-address> [del]",};
+/* *INDENT-ON* */
+
+static clib_error_t *
+p2p_ethernet_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (p2p_ethernet_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/ethernet/p2p_ethernet.h b/src/vnet/ethernet/p2p_ethernet.h
new file mode 100644
index 00000000..31b93d82
--- /dev/null
+++ b/src/vnet/ethernet/p2p_ethernet.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+#ifndef included_vnet_p2p_ethernet_h
+#define included_vnet_p2p_ethernet_h
+
+#include <vnet/vnet.h>
+#include <vnet/ethernet/ethernet.h>
+
+int p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index, u8 * client_mac, int is_add);
+
+#endif /* included_vnet_p2p_ethernet_h */
diff --git a/src/vnet/ethernet/p2p_ethernet_api.c b/src/vnet/ethernet/p2p_ethernet_api.c
new file mode 100644
index 00000000..1d9eaeb0
--- /dev/null
+++ b/src/vnet/ethernet/p2p_ethernet_api.c
@@ -0,0 +1,128 @@
+/*
+ *------------------------------------------------------------------
+ * p2p_ethernet_api.c - p2p ethernet api
+ *
+ * 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 <vnet/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/vnet_msg_enum.h>
+#include <vnet/ethernet/p2p_ethernet.h>
+
+#define vl_typedefs		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                               \
+_(P2P_ETHERNET_ADD, p2p_ethernet_add)                     \
+_(P2P_ETHERNET_DEL, p2p_ethernet_del)
+
+void
+vl_api_p2p_ethernet_add_t_handler (vl_api_p2p_ethernet_add_t * mp)
+{
+  vl_api_p2p_ethernet_add_reply_t *rmp;
+  vlib_main_t *vm = vlib_get_main ();
+  int rv;
+
+  u32 parent_if_index = htonl (mp->parent_if_index);
+  u8 remote_mac[6];
+
+  clib_memcpy (remote_mac, mp->remote_mac, 6);
+  rv = p2p_ethernet_add_del (vm, parent_if_index, remote_mac, 1);
+
+  REPLY_MACRO (VL_API_P2P_ETHERNET_ADD_REPLY);
+}
+
+void
+vl_api_p2p_ethernet_del_t_handler (vl_api_p2p_ethernet_del_t * mp)
+{
+  vl_api_p2p_ethernet_del_reply_t *rmp;
+  vlib_main_t *vm = vlib_get_main ();
+  int rv;
+
+  u32 parent_if_index = htonl (mp->parent_if_index);
+  u8 remote_mac[6];
+
+  clib_memcpy (remote_mac, mp->remote_mac, 6);
+  rv = p2p_ethernet_add_del (vm, parent_if_index, remote_mac, 0);
+
+  REPLY_MACRO (VL_API_P2P_ETHERNET_DEL_REPLY);
+}
+
+/*
+ * p2p_ethernet_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has alread mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#define vl_msg_name_crc_list
+#include <vnet/vnet_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+  foreach_vl_msg_name_crc_p2p_ethernet;
+#undef _
+}
+
+static clib_error_t *
+p2p_ethernet_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = &api_main;
+
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_msg;
+#undef _
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (p2p_ethernet_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */