vpp - Vector Packet Processing

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Diffstat (limited to 'src/vnet')

-rw-r--r--

1 files changed, 1 insertions, 1 deletions

/* * Copyright (c) 2015 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. */ /* * trace_funcs.h: VLIB trace buffer. * * Copyright (c) 2008 Eliot Dresselhaus * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef included_vlib_trace_funcs_h #define included_vlib_trace_funcs_h always_inline void vlib_validate_trace (vlib_trace_main_t * tm, vlib_buffer_t * b) { /* * this assert seems right, but goes off constantly. * disabling it appears to make the pain go away */ ASSERT (1 || b->flags & VLIB_BUFFER_IS_TRACED); ASSERT (!pool_is_free_index (tm->trace_buffer_pool, b->trace_index)); } always_inline void * vlib_add_trace (vlib_main_t * vm, vlib_node_runtime_t * r, vlib_buffer_t * b, u32 n_data_bytes) { vlib_trace_main_t *tm = &vm->trace_main; vlib_trace_header_t *h; u32 n_data_words; vlib_validate_trace (tm, b); n_data_bytes = round_pow2 (n_data_bytes, sizeof (h[0])); n_data_words = n_data_bytes / sizeof (h[0]); vec_add2_aligned (tm->trace_buffer_pool[b->trace_index], h, 1 + n_data_words, sizeof (h[0])); h->time = vm->cpu_time_last_node_dispatch; h->n_data = n_data_words; h->node_index = r->node_index; return h->data; } always_inline vlib_trace_header_t * vlib_trace_header_next (vlib_trace_header_t * h) { return h + 1 + h->n_data; } always_inline void vlib_free_trace (vlib_main_t * vm, vlib_buffer_t * b) { vlib_trace_main_t *tm = &vm->trace_main; vlib_validate_trace (tm, b); _vec_len (tm->trace_buffer_pool[b->trace_index]) = 0; pool_put_index (tm->trace_buffer_pool, b->trace_index); } always_inline void vlib_trace_next_frame (vlib_main_t * vm, vlib_node_runtime_t * r, u32 next_index) { vlib_next_frame_t *nf; nf = vlib_node_runtime_get_next_frame (vm, r, next_index); nf->flags |= VLIB_FRAME_TRACE; } void trace_apply_filter (vlib_main_t * vm); /* Mark buffer as traced and allocate trace buffer. */ always_inline void vlib_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * r, u32 next_index, vlib_buffer_t * b, int follow_chain) { vlib_trace_main_t *tm = &vm->trace_main; vlib_trace_header_t **h; /* * Apply filter to existing traces to keep number of allocated traces low. * Performed each time around the main loop. */ if (tm->last_main_loop_count != vm->main_loop_count) { tm->last_main_loop_count = vm->main_loop_count; trace_apply_filter (vm); } vlib_trace_next_frame (vm, r, next_index); pool_get (tm->trace_buffer_pool, h); do { b->flags |= VLIB_BUFFER_IS_TRACED; b->trace_index = h - tm->trace_buffer_pool; } while (follow_chain && (b = vlib_get_next_buffer (vm, b))); } always_inline void vlib_buffer_copy_trace_flag (vlib_main_t * vm, vlib_buffer_t * b, u32 bi_target) { vlib_buffer_t *b_target = vlib_get_buffer (vm, bi_target); b_target->flags |= b->flags & VLIB_BUFFER_IS_TRACED; b_target->trace_index = b->trace_index; } always_inline u32 vlib_get_trace_count (vlib_main_t * vm, vlib_node_runtime_t * rt) { vlib_trace_main_t *tm = &vm->trace_main; vlib_trace_node_t *tn; int n; if (rt->node_index >= vec_len (tm->nodes)) return 0; tn = tm->nodes + rt->node_index; n = tn->limit - tn->count; ASSERT (n >= 0); return n; } always_inline void vlib_set_trace_count (vlib_main_t * vm, vlib_node_runtime_t * rt, u32 count) { vlib_trace_main_t *tm = &vm->trace_main; vlib_trace_node_t *tn = vec_elt_at_index (tm->nodes, rt->node_index); ASSERT (count <= tn->limit); tn->count = tn->limit - count; } /* Helper function for nodes which only trace buffer data. */ void vlib_trace_frame_buffers_only (vlib_main_t * vm, vlib_node_runtime_t * node, u32 * buffers, uword n_buffers, uword next_buffer_stride, uword n_buffer_data_bytes_in_trace); #endif /* included_vlib_trace_funcs_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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