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-rw-r--r--src/vnet/mpls/interface.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/vnet/mpls/interface.c b/src/vnet/mpls/interface.c
new file mode 100644
index 00000000000..692a2d1eb62
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+++ b/src/vnet/mpls/interface.c
@@ -0,0 +1,121 @@
+/*
+ * interface.c: mpls interfaces
+ *
+ * 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 <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/mpls/mpls.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/adj/adj_midchain.h>
+#include <vnet/dpo/classify_dpo.h>
+
+
+u8
+mpls_sw_interface_is_enabled (u32 sw_if_index)
+{
+ mpls_main_t * mm = &mpls_main;
+
+ if (vec_len(mm->mpls_enabled_by_sw_if_index) < sw_if_index)
+ return (0);
+
+ return (mm->mpls_enabled_by_sw_if_index[sw_if_index]);
+}
+
+void
+mpls_sw_interface_enable_disable (mpls_main_t * mm,
+ u32 sw_if_index,
+ u8 is_enable)
+{
+ fib_node_index_t lfib_index;
+
+ vec_validate_init_empty (mm->mpls_enabled_by_sw_if_index, sw_if_index, 0);
+
+ /*
+ * enable/disable only on the 1<->0 transition
+ */
+ if (is_enable)
+ {
+ if (1 != ++mm->mpls_enabled_by_sw_if_index[sw_if_index])
+ return;
+
+ lfib_index = fib_table_find_or_create_and_lock(FIB_PROTOCOL_MPLS,
+ MPLS_FIB_DEFAULT_TABLE_ID);
+ vec_validate(mm->fib_index_by_sw_if_index, 0);
+ mm->fib_index_by_sw_if_index[sw_if_index] = lfib_index;
+ }
+ else
+ {
+ ASSERT(mm->mpls_enabled_by_sw_if_index[sw_if_index] > 0);
+ if (0 != --mm->mpls_enabled_by_sw_if_index[sw_if_index])
+ return;
+
+ fib_table_unlock(mm->fib_index_by_sw_if_index[sw_if_index],
+ FIB_PROTOCOL_MPLS);
+ }
+
+ vnet_feature_enable_disable ("mpls-input", "mpls-lookup", sw_if_index,
+ is_enable, 0, 0);
+
+}
+
+static clib_error_t *
+mpls_interface_enable_disable (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ vnet_main_t * vnm = vnet_get_main();
+ clib_error_t * error = 0;
+ u32 sw_if_index, enable;
+
+ sw_if_index = ~0;
+
+ if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ {
+ error = clib_error_return (0, "unknown interface `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+
+ if (unformat (input, "enable"))
+ enable = 1;
+ else if (unformat (input, "disable"))
+ enable = 0;
+ else
+ {
+ error = clib_error_return (0, "expected 'enable' or 'disable'",
+ format_unformat_error, input);
+ goto done;
+ }
+
+ mpls_sw_interface_enable_disable(&mpls_main, sw_if_index, enable);
+
+ done:
+ return error;
+}
+
+/*?
+ * This command enables an interface to accpet MPLS packets
+ *
+ * @cliexpar
+ * @cliexstart{set interface mpls}
+ * set interface mpls GigEthernet0/8/0 enable
+ * @cliexend
+ ?*/
+VLIB_CLI_COMMAND (set_interface_ip_table_command, static) = {
+ .path = "set interface mpls",
+ .function = mpls_interface_enable_disable,
+ .short_help = "Enable/Disable an interface for MPLS forwarding",
+};