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>
19 #include <vnet/mpls/mpls.api_enum.h>
22 format_mpls_drop_trace (u8 * s, va_list * args)
24 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
25 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
27 s = format (s, "drop");
32 mpls_drop_trace (vlib_main_t * vm,
33 vlib_node_runtime_t * node,
38 n_left = frame->n_vectors;
39 from = vlib_frame_vector_args (frame);
48 b0 = vlib_get_buffer (vm, bi0);
50 if (b0->flags & VLIB_BUFFER_IS_TRACED)
52 vlib_add_trace (vm, node, b0, 0);
60 mpls_terminate (vlib_main_t * vm,
61 vlib_node_runtime_t * node,
65 u32 * buffers = vlib_frame_vector_args (frame);
66 uword n_packets = frame->n_vectors;
68 if (node->flags & VLIB_NODE_FLAG_TRACE)
69 mpls_drop_trace (vm, node, frame);
71 vlib_error_drop_buffers (vm, node,
76 mpls_input_node.index,
82 VLIB_NODE_FN (mpls_punt_node) (vlib_main_t * vm,
83 vlib_node_runtime_t * node,
86 return (mpls_terminate(vm, node, frame, MPLS_ERROR_PUNT));
89 VLIB_REGISTER_NODE (mpls_punt_node) = {
91 .vector_size = sizeof (u32),
92 .format_trace = format_mpls_drop_trace,
100 VLIB_NODE_FN (mpls_drop_node) (vlib_main_t * vm,
101 vlib_node_runtime_t * node,
102 vlib_frame_t * frame)
104 return (mpls_terminate(vm, node, frame, MPLS_ERROR_DROP));
107 VLIB_REGISTER_NODE (mpls_drop_node) = {
109 .vector_size = sizeof (u32),
110 .format_trace = format_mpls_drop_trace,
118 VLIB_NODE_FN (mpls_not_enabled_node) (vlib_main_t * vm,
119 vlib_node_runtime_t * node,
120 vlib_frame_t * frame)
122 return (mpls_terminate(vm, node, frame, MPLS_ERROR_NOT_ENABLED));
125 VLIB_REGISTER_NODE (mpls_not_enabled_node) = {
126 .name = "mpls-not-enabled",
127 .vector_size = sizeof (u32),
128 .format_trace = format_mpls_drop_trace,
136 VNET_FEATURE_ARC_INIT (mpls_input, static) =
138 .arc_name = "mpls-input",
139 .start_nodes = VNET_FEATURES ("mpls-input"),
140 .last_in_arc = "mpls-lookup",
141 .arc_index_ptr = &mpls_main.input_feature_arc_index,
144 VNET_FEATURE_INIT (mpls_not_enabled, static) = {
145 .arc_name = "mpls-input",
146 .node_name = "mpls-not-enabled",
147 .runs_before = VNET_FEATURES ("mpls-lookup"),
150 VNET_FEATURE_INIT (mpls_lookup, static) = {
151 .arc_name = "mpls-input",
152 .node_name = "mpls-lookup",
153 .runs_before = VNET_FEATURES (0), /* not before any other features */
156 VNET_FEATURE_ARC_INIT (mpls_output, static) =
158 .arc_name = "mpls-output",
159 .start_nodes = VNET_FEATURES ("mpls-output", "mpls-midchain"),
160 .last_in_arc = "interface-output",
161 .arc_index_ptr = &mpls_main.output_feature_arc_index,
164 /* Built-in ip4 tx feature path definition */
165 VNET_FEATURE_INIT (mpls_interface_output, static) = {
166 .arc_name = "mpls-output",
167 .node_name = "interface-output",
168 .runs_before = 0, /* not before any other features */
171 static clib_error_t *
172 mpls_sw_interface_add_del (vnet_main_t * vnm,
176 mpls_main_t * mm = &mpls_main;
178 vec_validate_init_empty (mm->mpls_enabled_by_sw_if_index, sw_if_index, 0);
179 vec_validate_init_empty (mm->fib_index_by_sw_if_index, sw_if_index, 0);
181 vnet_feature_enable_disable ("mpls-input", "mpls-not-enabled", sw_if_index,
184 return /* no error */ 0;
187 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (mpls_sw_interface_add_del);