2 * mpls_features.c: MPLS input and output features
4 * Copyright (c) 2016 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/mpls/mpls.h>
21 format_mpls_drop_trace (u8 * s, va_list * args)
23 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
24 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
30 mpls_drop_trace (vlib_main_t * vm,
31 vlib_node_runtime_t * node,
36 n_left = frame->n_vectors;
37 from = vlib_frame_vector_args (frame);
46 b0 = vlib_get_buffer (vm, bi0);
48 if (b0->flags & VLIB_BUFFER_IS_TRACED)
50 vlib_add_trace (vm, node, b0, 0);
58 mpls_terminate (vlib_main_t * vm,
59 vlib_node_runtime_t * node,
63 u32 * buffers = vlib_frame_vector_args (frame);
64 uword n_packets = frame->n_vectors;
66 if (node->flags & VLIB_NODE_FLAG_TRACE)
67 mpls_drop_trace (vm, node, frame);
69 vlib_error_drop_buffers (vm, node,
74 mpls_input_node.index,
80 VLIB_NODE_FN (mpls_punt_node) (vlib_main_t * vm,
81 vlib_node_runtime_t * node,
84 return (mpls_terminate(vm, node, frame, MPLS_ERROR_PUNT));
87 VLIB_REGISTER_NODE (mpls_punt_node) = {
89 .vector_size = sizeof (u32),
90 .format_trace = format_mpls_drop_trace,
98 VLIB_NODE_FN (mpls_drop_node) (vlib_main_t * vm,
99 vlib_node_runtime_t * node,
100 vlib_frame_t * frame)
102 return (mpls_terminate(vm, node, frame, MPLS_ERROR_DROP));
105 VLIB_REGISTER_NODE (mpls_drop_node) = {
107 .vector_size = sizeof (u32),
108 .format_trace = format_mpls_drop_trace,
116 VLIB_NODE_FN (mpls_not_enabled_node) (vlib_main_t * vm,
117 vlib_node_runtime_t * node,
118 vlib_frame_t * frame)
120 return (mpls_terminate(vm, node, frame, MPLS_ERROR_NOT_ENABLED));
123 VLIB_REGISTER_NODE (mpls_not_enabled_node) = {
124 .name = "mpls-not-enabled",
125 .vector_size = sizeof (u32),
126 .format_trace = format_mpls_drop_trace,
134 VNET_FEATURE_ARC_INIT (mpls_input, static) =
136 .arc_name = "mpls-input",
137 .start_nodes = VNET_FEATURES ("mpls-input"),
138 .last_in_arc = "mpls-lookup",
139 .arc_index_ptr = &mpls_main.input_feature_arc_index,
142 VNET_FEATURE_INIT (mpls_not_enabled, static) = {
143 .arc_name = "mpls-input",
144 .node_name = "mpls-not-enabled",
145 .runs_before = VNET_FEATURES ("mpls-lookup"),
148 VNET_FEATURE_INIT (mpls_lookup, static) = {
149 .arc_name = "mpls-input",
150 .node_name = "mpls-lookup",
151 .runs_before = VNET_FEATURES (0), /* not before any other features */
154 VNET_FEATURE_ARC_INIT (mpls_output, static) =
156 .arc_name = "mpls-output",
157 .start_nodes = VNET_FEATURES ("mpls-output", "mpls-midchain"),
158 .last_in_arc = "interface-output",
159 .arc_index_ptr = &mpls_main.output_feature_arc_index,
162 /* Built-in ip4 tx feature path definition */
163 VNET_FEATURE_INIT (mpls_interface_output, static) = {
164 .arc_name = "mpls-output",
165 .node_name = "interface-output",
166 .runs_before = 0, /* not before any other features */
169 static clib_error_t *
170 mpls_sw_interface_add_del (vnet_main_t * vnm,
174 mpls_main_t * mm = &mpls_main;
176 vec_validate_init_empty (mm->mpls_enabled_by_sw_if_index, sw_if_index, 0);
177 vec_validate_init_empty (mm->fib_index_by_sw_if_index, sw_if_index, 0);
179 vnet_feature_enable_disable ("mpls-input", "mpls-not-enabled", sw_if_index,
182 return /* no error */ 0;
185 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (mpls_sw_interface_add_del);