2 * interface.c: mpls interfaces
4 * Copyright (c) 2012 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/mpls/mpls.h>
20 #include <vnet/fib/mpls_fib.h>
21 #include <vnet/fib/ip4_fib.h>
22 #include <vnet/adj/adj_midchain.h>
23 #include <vnet/dpo/classify_dpo.h>
27 mpls_sw_interface_is_enabled (u32 sw_if_index)
29 mpls_main_t * mm = &mpls_main;
31 if (vec_len(mm->mpls_enabled_by_sw_if_index) <= sw_if_index)
34 return (mm->mpls_enabled_by_sw_if_index[sw_if_index]);
38 mpls_sw_interface_enable_disable (mpls_main_t *mm, u32 sw_if_index,
41 fib_node_index_t lfib_index;
42 vnet_main_t *vnm = vnet_get_main ();
43 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
45 vec_validate_init_empty (mm->mpls_enabled_by_sw_if_index, sw_if_index, 0);
47 lfib_index = fib_table_find(FIB_PROTOCOL_MPLS,
48 MPLS_FIB_DEFAULT_TABLE_ID);
51 return VNET_API_ERROR_NO_SUCH_FIB;
54 * enable/disable only on the 1<->0 transition
58 if (1 != ++mm->mpls_enabled_by_sw_if_index[sw_if_index])
61 fib_table_lock (lfib_index, FIB_PROTOCOL_MPLS, FIB_SOURCE_INTERFACE);
63 vec_validate(mm->fib_index_by_sw_if_index, sw_if_index);
64 mm->fib_index_by_sw_if_index[sw_if_index] = lfib_index;
68 ASSERT(mm->mpls_enabled_by_sw_if_index[sw_if_index] > 0);
69 if (0 != --mm->mpls_enabled_by_sw_if_index[sw_if_index])
72 fib_table_unlock (mm->fib_index_by_sw_if_index[sw_if_index],
73 FIB_PROTOCOL_MPLS, FIB_SOURCE_INTERFACE);
76 vnet_feature_enable_disable ("mpls-input", "mpls-not-enabled",
77 sw_if_index, !is_enable, 0, 0);
81 else if (hi->l3_if_count)
88 mpls_interface_enable_disable (vlib_main_t * vm,
89 unformat_input_t * input,
90 vlib_cli_command_t * cmd)
92 vnet_main_t * vnm = vnet_get_main();
93 clib_error_t * error = 0;
94 u32 sw_if_index, enable;
99 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
101 error = clib_error_return (0, "unknown interface `%U'",
102 format_unformat_error, input);
106 if (unformat (input, "enable"))
108 else if (unformat (input, "disable"))
112 error = clib_error_return (0, "expected 'enable' or 'disable'",
113 format_unformat_error, input);
117 rv = mpls_sw_interface_enable_disable (&mpls_main, sw_if_index, enable);
119 if (VNET_API_ERROR_NO_SUCH_FIB == rv)
120 error = clib_error_return (0, "default MPLS table must be created first");
127 * This command enables an interface to accept MPLS packets
130 * @cliexstart{set interface mpls}
131 * set interface mpls GigEthernet0/8/0 enable
134 VLIB_CLI_COMMAND (set_interface_ip_table_command, static) = {
135 .path = "set interface mpls",
136 .function = mpls_interface_enable_disable,
137 .short_help = "Enable/Disable an interface for MPLS forwarding",
141 show_mpls_one_interface (vnet_main_t *vnm, vlib_main_t *vm, u32 sw_if_index,
144 mpls_main_t *mm = &mpls_main;
147 enabled = mm->mpls_enabled_by_sw_if_index[sw_if_index];
151 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnm,
153 vlib_cli_output (vm, " MPLS enabled");
157 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnm,
159 vlib_cli_output (vm, " MPLS disabled");
164 show_mpls_interface_walk (vnet_main_t *vnm, vnet_sw_interface_t *si, void *ctx)
166 show_mpls_one_interface (vnm, ctx, si->sw_if_index, false);
168 return (WALK_CONTINUE);
171 static clib_error_t *
172 show_mpls_interface (vlib_main_t *vm, unformat_input_t *input,
173 vlib_cli_command_t *cmd)
175 vnet_main_t *vnm = vnet_get_main ();
180 if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
183 if (~0 == sw_if_index)
185 vnet_sw_interface_walk (vnm, show_mpls_interface_walk, vm);
189 show_mpls_one_interface (vnm, vm, sw_if_index, true);
196 * This command displays the MPLS forwarding state of an interface
199 * @cliexstart{show mpls interface}
200 * set mpls interface GigEthernet0/8/0
203 VLIB_CLI_COMMAND (show_mpls_interface_command, static) = {
204 .path = "show mpls interface",
205 .function = show_mpls_interface,
206 .short_help = "Show MPLS interface forwarding",