--- /dev/null
+/*
+ * l2e.c : Extract L3 packets from the L2 input and feed
+ * them into the L3 path.
+ *
+ * Copyright (c) 2013 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 <plugins/l2e/l2e.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/feat_bitmap.h>
+#include <vnet/ip/ip.h>
+
+l2_emulation_main_t l2_emulation_main;
+
+/**
+ * A zero'd out struct we can use in the vec_validate
+ */
+static const l2_emulation_t ezero = { };
+
+__clib_export void
+l2_emulation_enable (u32 sw_if_index)
+{
+ l2_emulation_main_t *em = &l2_emulation_main;
+ vec_validate_init_empty (em->l2_emulations, sw_if_index, ezero);
+
+ l2_emulation_t *l23e = &em->l2_emulations[sw_if_index];
+
+ l23e->enabled = 1;
+
+ /*
+ * L3 enable the interface - using IP unnumbered from the control
+ * plane may not be possible since there may be no BVI interface
+ * to which to unnumber
+ */
+ ip4_sw_interface_enable_disable (sw_if_index, 1);
+ ip6_sw_interface_enable_disable (sw_if_index, 1);
+
+ l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_EMULATION, 1);
+}
+
+
+__clib_export void
+l2_emulation_disable (u32 sw_if_index)
+{
+ l2_emulation_main_t *em = &l2_emulation_main;
+ if (vec_len (em->l2_emulations) >= sw_if_index)
+ {
+ l2_emulation_t *l23e = &em->l2_emulations[sw_if_index];
+ clib_memset (l23e, 0, sizeof (*l23e));
+
+ l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_EMULATION, 0);
+ ip4_sw_interface_enable_disable (sw_if_index, 0);
+ ip6_sw_interface_enable_disable (sw_if_index, 0);
+ }
+}
+
+static clib_error_t *
+l2_emulation_interface_add_del (vnet_main_t * vnm,
+ u32 sw_if_index, u32 is_add)
+{
+ l2_emulation_main_t *em = &l2_emulation_main;
+ if (is_add)
+ {
+ vec_validate_init_empty (em->l2_emulations, sw_if_index, ezero);
+ }
+
+ return (NULL);
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (l2_emulation_interface_add_del);
+
+static clib_error_t *
+l2_emulation_cli (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 sw_if_index = ~0;
+ u8 enable = 1;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_vnet_sw_interface,
+ vnm, &sw_if_index))
+ ;
+ else if (unformat (input, "enable"))
+ enable = 1;
+ else if (unformat (input, "disable"))
+ enable = 0;
+ else
+ break;
+ }
+
+ if (~0 == sw_if_index)
+ return clib_error_return (0, "interface must be specified");
+
+ if (enable)
+ l2_emulation_enable (sw_if_index);
+ else
+ l2_emulation_disable (sw_if_index);
+
+ return (NULL);
+}
+
+/*?
+ * Configure l2 emulation.
+ * When the interface is in L2 mode, configure the extraction of L3
+ * packets out of the L2 path and into the L3 path.
+ *
+ * @cliexpar
+ * @cliexstart{set interface l2 input l2-emulation <interface-name> [disable]}
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (l2_emulation_cli_node, static) = {
+ .path = "set interface l2 l2-emulation",
+ .short_help =
+ "set interface l2 l2-emulation <interface-name> [disable|enable]\n",
+ .function = l2_emulation_cli,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+l2_emulation_show (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ l2_emulation_main_t *em = &l2_emulation_main;
+ vnet_main_t *vnm = vnet_get_main ();
+ l2_emulation_t *l23e;
+ u32 sw_if_index;
+
+ vec_foreach_index (sw_if_index, em->l2_emulations)
+ {
+ l23e = &em->l2_emulations[sw_if_index];
+ if (l23e->enabled)
+ {
+ vlib_cli_output (vm, "%U\n",
+ format_vnet_sw_if_index_name, vnm, sw_if_index);
+ }
+ }
+ return (NULL);
+}
+
+/*?
+ * Show l2 emulation.
+ * When the interface is in L2 mode, configure the extraction of L3
+ * packets out of the L2 path and into the L3 path.
+ *
+ * @cliexpar
+ * @cliexstart{show interface l2 l2-emulation}
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (l2_emulation_show_node, static) = {
+ .path = "show interface l2 l2-emulation",
+ .short_help = "show interface l2 l2-emulation\n",
+ .function = l2_emulation_show,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+l2_emulation_init (vlib_main_t * vm)
+{
+ l2_emulation_main_t *em = &l2_emulation_main;
+ vlib_node_t *node;
+
+ node = vlib_get_node_by_name (vm, (u8 *) "l2-emulation");
+ em->l2_emulation_node_index = node->index;
+
+ /* Initialize the feature next-node indexes */
+ feat_bitmap_init_next_nodes (vm,
+ em->l2_emulation_node_index,
+ L2INPUT_N_FEAT,
+ l2input_get_feat_names (),
+ em->l2_input_feat_next);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (l2_emulation_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff