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/*
* 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/buffer.h>
#include <vlib/vlib.h>
#include <vnet/dpo/dpo.h>
#include <vnet/bier/bier_hdr_inlines.h>
typedef struct bier_drop_trace_t_
{
index_t dpi;
} bier_drop_trace_t;
static void
bier_drop_trace (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 *from, n_left;
n_left = frame->n_vectors;
from = vlib_frame_vector_args (frame);
while (n_left >= 1)
{
u32 bi0;
vlib_buffer_t *b0;
bier_drop_trace_t *t0;
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, sizeof(*t0));
t0->dpi = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
}
from += 1;
n_left -= 1;
}
}
static uword
bier_drop (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
u32 *buffers = vlib_frame_vector_args (frame);
uword n_packets = frame->n_vectors;
if (node->flags & VLIB_NODE_FLAG_TRACE)
bier_drop_trace (vm, node, frame);
vlib_error_drop_buffers (vm, node, buffers,
/* stride */ 1,
n_packets,
/* next */ 0,
0, // bier_input_node.index,
0);
return n_packets;
}
static u8 *
format_bier_drop_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
bier_drop_trace_t *t = va_arg (*args, bier_drop_trace_t *);
s = format (s, "dpo-idx %d", t->dpi);
return s;
}
VLIB_REGISTER_NODE (bier_drop_node, static) =
{
.function = bier_drop,
.name = "bier-drop",
.vector_size = sizeof (u32),
.format_trace = format_bier_drop_trace,
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
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