2 * Copyright (c) 2017 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 * Buffer trace trajectory utilities
20 #include <vnet/vnet.h>
23 * Dump a trajectory trace, reasonably easy to call from gdb
26 vnet_dump_trajectory_trace (vlib_main_t * vm, u32 bi)
28 #if VLIB_BUFFER_TRACE_TRAJECTORY > 0
29 vlib_node_main_t *vnm = &vm->node_main;
34 b = vlib_get_buffer (vm, bi);
36 trace = vnet_buffer2 (b)->trajectory_trace;
38 fformat (stderr, "Context trace for bi %d b 0x%llx, visited %d\n",
39 bi, b, vec_len (trace));
41 for (i = 0; i < vec_len (trace); i++)
45 node_index = trace[i];
47 if (node_index >= vec_len (vnm->nodes))
49 fformat (stderr, "Skip bogus node index %d\n", node_index);
53 fformat (stderr, "%v (%d)\n", vnm->nodes[node_index]->name, node_index);
56 fformat (stderr, "in vlib/buffers.h, "
57 "#define VLIB_BUFFER_TRACE_TRAJECTORY 1\n");
62 #if VLIB_BUFFER_TRACE_TRAJECTORY > 0
65 init_trajectory_trace (vlib_buffer_t * b)
67 if (!clib_mem_is_vec (vnet_buffer2 (b)->trajectory_trace))
69 vnet_buffer2 (b)->trajectory_trace = 0;
70 vec_validate (vnet_buffer2 (b)->trajectory_trace, 7);
72 _vec_len (vnet_buffer2 (b)->trajectory_trace) = 0;
76 add_trajectory_trace (vlib_buffer_t * b, u32 node_index)
78 vec_add1 (vnet_buffer2 (b)->trajectory_trace, (u16) node_index);
82 trajectory_trace_init (vlib_main_t * vm)
84 vlib_buffer_trace_trajectory_cb = add_trajectory_trace;
85 vlib_buffer_trace_trajectory_init_cb = init_trajectory_trace;
89 VLIB_INIT_FUNCTION (trajectory_trace_init);
94 * fd.io coding-style-patch-verification: ON
97 * eval: (c-set-style "gnu")