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/*
* mpls_features.c: MPLS input and output features
*
* Copyright (c) 2016 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/mpls/mpls.h>
always_inline uword
mpls_terminate (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
int error_code)
{
u32 * buffers = vlib_frame_vector_args (frame);
uword n_packets = frame->n_vectors;
vlib_error_drop_buffers (vm, node,
buffers,
/* stride */ 1,
n_packets,
/* next */ 0,
mpls_input_node.index,
error_code);
return n_packets;
}
static uword
mpls_punt (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return (mpls_terminate(vm, node, frame, MPLS_ERROR_PUNT));
}
VLIB_REGISTER_NODE (mpls_punt_node) = {
.function = mpls_punt,
.name = "mpls-punt",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-punt",
},
};
VLIB_NODE_FUNCTION_MULTIARCH (mpls_punt_node, mpls_punt)
static uword
mpls_drop (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return (mpls_terminate(vm, node, frame, MPLS_ERROR_DROP));
}
VLIB_REGISTER_NODE (mpls_drop_node) = {
.function = mpls_drop,
.name = "mpls-drop",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VLIB_NODE_FUNCTION_MULTIARCH (mpls_drop_node, mpls_drop)
static uword
mpls_not_enabled (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return (mpls_terminate(vm, node, frame, MPLS_ERROR_NOT_ENABLED));
}
VLIB_REGISTER_NODE (mpls_not_enabled_node) = {
.function = mpls_not_enabled,
.name = "mpls-not-enabled",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VLIB_NODE_FUNCTION_MULTIARCH (mpls_not_enabled_node, mpls_not_enabled)
VNET_FEATURE_ARC_INIT (mpls_input, static) =
{
.arc_name = "mpls-input",
.start_nodes = VNET_FEATURES ("mpls-input"),
.arc_index_ptr = &mpls_main.input_feature_arc_index,
};
VNET_FEATURE_INIT (mpls_lookup, static) = {
.arc_name = "mpls-input",
.node_name = "mpls-lookup",
.runs_before = VNET_FEATURES ("mpls-not-enabled"),
};
VNET_FEATURE_INIT (mpls_not_enabled, static) = {
.arc_name = "mpls-input",
.node_name = "mpls-not-enabled",
.runs_before = VNET_FEATURES (0), /* not before any other features */
};
VNET_FEATURE_ARC_INIT (mpls_output, static) =
{
.arc_name = "mpls-output",
.start_nodes = VNET_FEATURES ("mpls-output", "mpls-midchain"),
.arc_index_ptr = &mpls_main.output_feature_arc_index,
};
/* Built-in ip4 tx feature path definition */
VNET_FEATURE_INIT (mpls_interface_output, static) = {
.arc_name = "mpls-output",
.node_name = "interface-output",
.runs_before = 0, /* not before any other features */
};
static clib_error_t *
mpls_sw_interface_add_del (vnet_main_t * vnm,
u32 sw_if_index,
u32 is_add)
{
mpls_main_t * mm = &mpls_main;
vec_validate_init_empty (mm->mpls_enabled_by_sw_if_index, sw_if_index, 0);
vec_validate_init_empty (mm->fib_index_by_sw_if_index, sw_if_index, 0);
vnet_feature_enable_disable ("mpls-input", "mpls-not-enabled", sw_if_index,
is_add, 0, 0);
vnet_feature_enable_disable ("mpls-output", "interface-output", sw_if_index,
is_add, 0, 0);
return /* no error */ 0;
}
VNET_SW_INTERFACE_ADD_DEL_FUNCTION (mpls_sw_interface_add_del);
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