2 * Copyright (c) 2015 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.
16 * buffer_funcs.h: VLIB buffer related functions/inlines
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef included_vlib_buffer_funcs_h
41 #define included_vlib_buffer_funcs_h
43 #include <vppinfra/hash.h>
46 vlib buffer access methods.
50 /** \brief Translate buffer index into buffer pointer
52 @param vm - (vlib_main_t *) vlib main data structure pointer
53 @param buffer_index - (u32) buffer index
54 @return - (vlib_buffer_t *) buffer pointer
56 always_inline vlib_buffer_t *
57 vlib_get_buffer (vlib_main_t * vm, u32 buffer_index)
59 return vlib_physmem_at_offset (&vm->physmem_main, ((uword) buffer_index)
60 << CLIB_LOG2_CACHE_LINE_BYTES);
63 /** \brief Translate buffer pointer into buffer index
65 @param vm - (vlib_main_t *) vlib main data structure pointer
66 @param p - (void *) buffer pointer
67 @return - (u32) buffer index
70 vlib_get_buffer_index (vlib_main_t * vm, void *p)
72 uword offset = vlib_physmem_offset_of (&vm->physmem_main, p);
73 ASSERT ((offset % (1 << CLIB_LOG2_CACHE_LINE_BYTES)) == 0);
74 return offset >> CLIB_LOG2_CACHE_LINE_BYTES;
77 /** \brief Get next buffer in buffer linklist, or zero for end of list.
79 @param vm - (vlib_main_t *) vlib main data structure pointer
80 @param b - (void *) buffer pointer
81 @return - (vlib_buffer_t *) next buffer, or NULL
83 always_inline vlib_buffer_t *
84 vlib_get_next_buffer (vlib_main_t * vm, vlib_buffer_t * b)
86 return (b->flags & VLIB_BUFFER_NEXT_PRESENT
87 ? vlib_get_buffer (vm, b->next_buffer) : 0);
90 uword vlib_buffer_length_in_chain_slow_path (vlib_main_t * vm,
91 vlib_buffer_t * b_first);
93 /** \brief Get length in bytes of the buffer chain
95 @param vm - (vlib_main_t *) vlib main data structure pointer
96 @param b - (void *) buffer pointer
97 @return - (uword) length of buffer chain
100 vlib_buffer_length_in_chain (vlib_main_t * vm, vlib_buffer_t * b)
102 uword l = b->current_length + b->total_length_not_including_first_buffer;
103 if (PREDICT_FALSE ((b->flags & (VLIB_BUFFER_NEXT_PRESENT
104 | VLIB_BUFFER_TOTAL_LENGTH_VALID))
105 == VLIB_BUFFER_NEXT_PRESENT))
106 return vlib_buffer_length_in_chain_slow_path (vm, b);
110 /** \brief Get length in bytes of the buffer index buffer chain
112 @param vm - (vlib_main_t *) vlib main data structure pointer
113 @param bi - (u32) buffer index
114 @return - (uword) length of buffer chain
117 vlib_buffer_index_length_in_chain (vlib_main_t * vm, u32 bi)
119 vlib_buffer_t *b = vlib_get_buffer (vm, bi);
120 return vlib_buffer_length_in_chain (vm, b);
123 /** \brief Copy buffer contents to memory
125 @param vm - (vlib_main_t *) vlib main data structure pointer
126 @param buffer_index - (u32) buffer index
127 @param contents - (u8 *) memory, <strong>must be large enough</strong>
128 @return - (uword) length of buffer chain
131 vlib_buffer_contents (vlib_main_t * vm, u32 buffer_index, u8 * contents)
133 uword content_len = 0;
139 b = vlib_get_buffer (vm, buffer_index);
140 l = b->current_length;
141 clib_memcpy (contents + content_len, b->data + b->current_data, l);
143 if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT))
145 buffer_index = b->next_buffer;
151 /* Return physical address of buffer->data start. */
153 vlib_get_buffer_data_physical_address (vlib_main_t * vm, u32 buffer_index)
155 return vlib_physmem_offset_to_physical (&vm->physmem_main,
156 (((uword) buffer_index) <<
157 CLIB_LOG2_CACHE_LINE_BYTES) +
158 STRUCT_OFFSET_OF (vlib_buffer_t,
162 /** \brief Prefetch buffer metadata by buffer index
163 The first 64 bytes of buffer contains most header information
165 @param vm - (vlib_main_t *) vlib main data structure pointer
166 @param bi - (u32) buffer index
167 @param type - LOAD, STORE. In most cases, STORE is the right answer
169 /* Prefetch buffer header given index. */
170 #define vlib_prefetch_buffer_with_index(vm,bi,type) \
172 vlib_buffer_t * _b = vlib_get_buffer (vm, bi); \
173 vlib_prefetch_buffer_header (_b, type); \
177 /* Iterate over known allocated vlib bufs. You probably do not want
179 @param vm the vlib_main_t
180 @param bi found allocated buffer index
181 @param body operation to perform on buffer index
182 function executes body for each allocated buffer index
184 #define vlib_buffer_foreach_allocated(vm,bi,body) \
186 vlib_main_t * _vmain = (vm); \
187 vlib_buffer_main_t * _bmain = &_vmain->buffer_main; \
188 hash_pair_t * _vbpair; \
189 hash_foreach_pair(_vbpair, _bmain->buffer_known_hash, ({ \
190 if (VLIB_BUFFER_KNOWN_ALLOCATED == _vbpair->value[0]) { \
191 (bi) = _vbpair->key; \
200 /* Index is unknown. */
203 /* Index is known and free/allocated. */
204 VLIB_BUFFER_KNOWN_FREE,
205 VLIB_BUFFER_KNOWN_ALLOCATED,
206 } vlib_buffer_known_state_t;
208 always_inline vlib_buffer_known_state_t
209 vlib_buffer_is_known (vlib_main_t * vm, u32 buffer_index)
211 vlib_buffer_main_t *bm = vm->buffer_main;
212 ASSERT (os_get_cpu_number () == 0);
214 uword *p = hash_get (bm->buffer_known_hash, buffer_index);
215 return p ? p[0] : VLIB_BUFFER_UNKNOWN;
219 vlib_buffer_set_known_state (vlib_main_t * vm,
221 vlib_buffer_known_state_t state)
223 vlib_buffer_main_t *bm = vm->buffer_main;
224 ASSERT (os_get_cpu_number () == 0);
225 hash_set (bm->buffer_known_hash, buffer_index, state);
228 /* Validates sanity of a single buffer.
229 Returns format'ed vector with error message if any. */
230 u8 *vlib_validate_buffer (vlib_main_t * vm, u32 buffer_index,
233 clib_error_t *vlib_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
236 /** \brief Allocate buffers into supplied array
238 @param vm - (vlib_main_t *) vlib main data structure pointer
239 @param buffers - (u32 * ) buffer index array
240 @param n_buffers - (u32) number of buffers requested
241 @return - (u32) number of buffers actually allocated, may be
242 less than the number requested or zero
245 vlib_buffer_alloc (vlib_main_t * vm, u32 * buffers, u32 n_buffers)
247 vlib_buffer_main_t *bm = vm->buffer_main;
249 ASSERT (bm->cb.vlib_buffer_alloc_cb);
251 return bm->cb.vlib_buffer_alloc_cb (vm, buffers, n_buffers);
255 vlib_buffer_round_size (u32 size)
257 return round_pow2 (size, sizeof (vlib_buffer_t));
260 /** \brief Allocate buffers from specific freelist into supplied array
262 @param vm - (vlib_main_t *) vlib main data structure pointer
263 @param buffers - (u32 * ) buffer index array
264 @param n_buffers - (u32) number of buffers requested
265 @return - (u32) number of buffers actually allocated, may be
266 less than the number requested or zero
269 vlib_buffer_alloc_from_free_list (vlib_main_t * vm,
271 u32 n_buffers, u32 free_list_index)
273 vlib_buffer_main_t *bm = vm->buffer_main;
275 ASSERT (bm->cb.vlib_buffer_alloc_from_free_list_cb);
277 return bm->cb.vlib_buffer_alloc_from_free_list_cb (vm, buffers, n_buffers,
281 /** \brief Free buffers
282 Frees the entire buffer chain for each buffer
284 @param vm - (vlib_main_t *) vlib main data structure pointer
285 @param buffers - (u32 * ) buffer index array
286 @param n_buffers - (u32) number of buffers to free
290 vlib_buffer_free (vlib_main_t * vm,
291 /* pointer to first buffer */
293 /* number of buffers to free */
296 vlib_buffer_main_t *bm = vm->buffer_main;
298 ASSERT (bm->cb.vlib_buffer_free_cb);
300 return bm->cb.vlib_buffer_free_cb (vm, buffers, n_buffers);
303 /** \brief Free buffers, does not free the buffer chain for each buffer
305 @param vm - (vlib_main_t *) vlib main data structure pointer
306 @param buffers - (u32 * ) buffer index array
307 @param n_buffers - (u32) number of buffers to free
311 vlib_buffer_free_no_next (vlib_main_t * vm,
312 /* pointer to first buffer */
314 /* number of buffers to free */
317 vlib_buffer_main_t *bm = vm->buffer_main;
319 ASSERT (bm->cb.vlib_buffer_free_no_next_cb);
321 return bm->cb.vlib_buffer_free_no_next_cb (vm, buffers, n_buffers);
324 /** \brief Free one buffer
325 Shorthand to free a single buffer chain.
327 @param vm - (vlib_main_t *) vlib main data structure pointer
328 @param buffer_index - (u32) buffer index to free
331 vlib_buffer_free_one (vlib_main_t * vm, u32 buffer_index)
333 vlib_buffer_free (vm, &buffer_index, /* n_buffers */ 1);
336 /* Add/delete buffer free lists. */
337 u32 vlib_buffer_create_free_list (vlib_main_t * vm, u32 n_data_bytes,
340 vlib_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index)
342 vlib_buffer_main_t *bm = vm->buffer_main;
344 ASSERT (bm->cb.vlib_buffer_delete_free_list_cb);
346 bm->cb.vlib_buffer_delete_free_list_cb (vm, free_list_index);
349 /* Find already existing public free list with given size or create one. */
350 u32 vlib_buffer_get_or_create_free_list (vlib_main_t * vm, u32 n_data_bytes,
353 always_inline vlib_buffer_free_list_t *
354 vlib_buffer_get_free_list (vlib_main_t * vm, u32 free_list_index)
356 vlib_buffer_main_t *bm = vm->buffer_main;
357 vlib_buffer_free_list_t *f;
359 f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index);
361 /* Sanity: indices must match. */
362 ASSERT (f->index == free_list_index);
368 vlib_buffer_free_list_buffer_size (vlib_main_t * vm, u32 free_list_index)
370 vlib_buffer_free_list_t *f =
371 vlib_buffer_get_free_list (vm, free_list_index);
372 return f->n_data_bytes;
375 void vlib_aligned_memcpy (void *_dst, void *_src, int n_bytes);
377 /* Reasonably fast buffer copy routine. */
379 vlib_copy_buffers (u32 * dst, u32 * src, u32 n)
401 vlib_physmem_alloc_aligned (vlib_main_t * vm, clib_error_t ** error,
402 uword n_bytes, uword alignment)
405 vm->os_physmem_alloc_aligned (&vm->physmem_main, n_bytes, alignment);
408 clib_error_return (0, "failed to allocate %wd bytes of I/O memory",
415 /* By default allocate I/O memory with cache line alignment. */
417 vlib_physmem_alloc (vlib_main_t * vm, clib_error_t ** error, uword n_bytes)
419 return vlib_physmem_alloc_aligned (vm, error, n_bytes,
420 CLIB_CACHE_LINE_BYTES);
424 vlib_physmem_free (vlib_main_t * vm, void *mem)
426 return vm->os_physmem_free (mem);
430 vlib_physmem_virtual_to_physical (vlib_main_t * vm, void *mem)
432 vlib_physmem_main_t *pm = &vm->physmem_main;
433 uword o = pointer_to_uword (mem) - pm->virtual.start;
434 return vlib_physmem_offset_to_physical (pm, o);
437 /* Append given data to end of buffer, possibly allocating new buffers. */
438 u32 vlib_buffer_add_data (vlib_main_t * vm,
440 u32 buffer_index, void *data, u32 n_data_bytes);
442 /* duplicate all buffers in chain */
443 always_inline vlib_buffer_t *
444 vlib_buffer_copy (vlib_main_t * vm, vlib_buffer_t * b)
446 vlib_buffer_t *s, *d, *fd;
447 uword n_alloc, n_buffers = 1;
448 u32 *new_buffers = 0;
449 u32 flag_mask = VLIB_BUFFER_NEXT_PRESENT | VLIB_BUFFER_TOTAL_LENGTH_VALID;
453 while (s->flags & VLIB_BUFFER_NEXT_PRESENT)
456 s = vlib_get_buffer (vm, s->next_buffer);
459 vec_validate (new_buffers, n_buffers - 1);
460 n_alloc = vlib_buffer_alloc (vm, new_buffers, n_buffers);
461 ASSERT (n_alloc == n_buffers);
465 fd = d = vlib_get_buffer (vm, new_buffers[0]);
466 d->current_data = s->current_data;
467 d->current_length = s->current_length;
468 d->flags = s->flags & flag_mask;
469 d->total_length_not_including_first_buffer =
470 s->total_length_not_including_first_buffer;
471 clib_memcpy (d->opaque, s->opaque, sizeof (s->opaque));
472 clib_memcpy (vlib_buffer_get_current (d),
473 vlib_buffer_get_current (s), s->current_length);
476 for (i = 1; i < n_buffers; i++)
479 d->next_buffer = new_buffers[i];
481 s = vlib_get_buffer (vm, s->next_buffer);
482 d = vlib_get_buffer (vm, new_buffers[i]);
483 d->current_data = s->current_data;
484 d->current_length = s->current_length;
485 clib_memcpy (vlib_buffer_get_current (d),
486 vlib_buffer_get_current (s), s->current_length);
487 d->flags = s->flags & flag_mask;
493 /* Initializes the buffer as an empty packet with no chained buffers. */
495 vlib_buffer_chain_init (vlib_buffer_t * first)
497 first->total_length_not_including_first_buffer = 0;
498 first->current_length = 0;
499 first->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
500 first->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
503 /* The provided next_bi buffer index is appended to the end of the packet. */
504 always_inline vlib_buffer_t *
505 vlib_buffer_chain_buffer (vlib_main_t * vm,
506 vlib_buffer_t * first,
507 vlib_buffer_t * last, u32 next_bi)
509 vlib_buffer_t *next_buffer = vlib_get_buffer (vm, next_bi);
510 last->next_buffer = next_bi;
511 last->flags |= VLIB_BUFFER_NEXT_PRESENT;
512 next_buffer->current_length = 0;
513 next_buffer->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
517 /* Increases or decreases the packet length.
518 * It does not allocate or deallocate new buffers.
519 * Therefore, the added length must be compatible
520 * with the last buffer. */
522 vlib_buffer_chain_increase_length (vlib_buffer_t * first,
523 vlib_buffer_t * last, i32 len)
525 last->current_length += len;
527 first->total_length_not_including_first_buffer += len;
530 /* Copy data to the end of the packet and increases its length.
531 * It does not allocate new buffers.
532 * Returns the number of copied bytes. */
534 vlib_buffer_chain_append_data (vlib_main_t * vm,
536 vlib_buffer_t * first,
537 vlib_buffer_t * last, void *data, u16 data_len)
540 vlib_buffer_free_list_buffer_size (vm, free_list_index);
541 ASSERT (n_buffer_bytes >= last->current_length + last->current_data);
542 u16 len = clib_min (data_len,
543 n_buffer_bytes - last->current_length -
545 clib_memcpy (vlib_buffer_get_current (last) + last->current_length, data,
547 vlib_buffer_chain_increase_length (first, last, len);
551 /* Copy data to the end of the packet and increases its length.
552 * Allocates additional buffers from the free list if necessary.
553 * Returns the number of copied bytes.
554 * 'last' value is modified whenever new buffers are allocated and
555 * chained and points to the last buffer in the chain. */
557 vlib_buffer_chain_append_data_with_alloc (vlib_main_t * vm,
559 vlib_buffer_t * first,
560 vlib_buffer_t ** last,
561 void *data, u16 data_len);
562 void vlib_buffer_chain_validate (vlib_main_t * vm, vlib_buffer_t * first);
564 format_function_t format_vlib_buffer, format_vlib_buffer_and_data,
565 format_vlib_buffer_contents;
569 /* Vector of packet data. */
572 /* Number of buffers to allocate in each call to physmem
574 u32 min_n_buffers_each_physmem_alloc;
576 /* Buffer free list for this template. */
580 } vlib_packet_template_t;
582 void vlib_packet_template_get_packet_helper (vlib_main_t * vm,
583 vlib_packet_template_t * t);
585 void vlib_packet_template_init (vlib_main_t * vm,
586 vlib_packet_template_t * t,
588 uword n_packet_data_bytes,
589 uword min_n_buffers_each_physmem_alloc,
592 void *vlib_packet_template_get_packet (vlib_main_t * vm,
593 vlib_packet_template_t * t,
597 vlib_packet_template_free (vlib_main_t * vm, vlib_packet_template_t * t)
599 vec_free (t->packet_data);
603 unserialize_vlib_buffer_n_bytes (serialize_main_t * m)
605 serialize_stream_t *s = &m->stream;
606 vlib_serialize_buffer_main_t *sm
607 = uword_to_pointer (m->stream.data_function_opaque,
608 vlib_serialize_buffer_main_t *);
609 vlib_main_t *vm = sm->vlib_main;
612 n = s->n_buffer_bytes - s->current_buffer_index;
613 if (sm->last_buffer != ~0)
615 vlib_buffer_t *b = vlib_get_buffer (vm, sm->last_buffer);
616 while (b->flags & VLIB_BUFFER_NEXT_PRESENT)
618 b = vlib_get_buffer (vm, b->next_buffer);
619 n += b->current_length;
624 clib_fifo_foreach (f, sm->rx.buffer_fifo, ({
625 n += vlib_buffer_index_length_in_chain (vm, f[0]);
635 vlib_copy_unit_t i[sizeof (vlib_buffer_t) / sizeof (vlib_copy_unit_t)];
639 /* Set a buffer quickly into "uninitialized" state. We want this to
640 be extremely cheap and arrange for all fields that need to be
641 initialized to be in the first 128 bits of the buffer. */
643 vlib_buffer_init_for_free_list (vlib_buffer_t * _dst,
644 vlib_buffer_free_list_t * fl)
646 vlib_buffer_union_t *dst = (vlib_buffer_union_t *) _dst;
647 vlib_buffer_union_t *src =
648 (vlib_buffer_union_t *) & fl->buffer_init_template;
650 /* Make sure vlib_buffer_t is cacheline aligned and sized */
651 ASSERT (STRUCT_OFFSET_OF (vlib_buffer_t, cacheline0) == 0);
652 ASSERT (STRUCT_OFFSET_OF (vlib_buffer_t, cacheline1) ==
653 CLIB_CACHE_LINE_BYTES);
654 ASSERT (STRUCT_OFFSET_OF (vlib_buffer_t, cacheline2) ==
655 CLIB_CACHE_LINE_BYTES * 2);
657 /* Make sure buffer template is sane. */
658 ASSERT (fl->index == fl->buffer_init_template.free_list_index);
660 /* Copy template from src->current_data thru src->free_list_index */
661 dst->i[0] = src->i[0];
662 if (1 * sizeof (dst->i[0]) < 16)
663 dst->i[1] = src->i[1];
664 if (2 * sizeof (dst->i[0]) < 16)
665 dst->i[2] = src->i[2];
667 /* Make sure it really worked. */
668 #define _(f) ASSERT (dst->b.f == src->b.f)
674 ASSERT (dst->b.total_length_not_including_first_buffer == 0);
678 vlib_buffer_init_two_for_free_list (vlib_buffer_t * _dst0,
679 vlib_buffer_t * _dst1,
680 vlib_buffer_free_list_t * fl)
682 vlib_buffer_union_t *dst0 = (vlib_buffer_union_t *) _dst0;
683 vlib_buffer_union_t *dst1 = (vlib_buffer_union_t *) _dst1;
684 vlib_buffer_union_t *src =
685 (vlib_buffer_union_t *) & fl->buffer_init_template;
687 /* Make sure buffer template is sane. */
688 ASSERT (fl->index == fl->buffer_init_template.free_list_index);
690 /* Copy template from src->current_data thru src->free_list_index */
691 dst0->i[0] = dst1->i[0] = src->i[0];
692 if (1 * sizeof (dst0->i[0]) < 16)
693 dst0->i[1] = dst1->i[1] = src->i[1];
694 if (2 * sizeof (dst0->i[0]) < 16)
695 dst0->i[2] = dst1->i[2] = src->i[2];
697 /* Make sure it really worked. */
698 #define _(f) ASSERT (dst0->b.f == src->b.f && dst1->b.f == src->b.f)
704 ASSERT (dst0->b.total_length_not_including_first_buffer == 0);
705 ASSERT (dst1->b.total_length_not_including_first_buffer == 0);
709 extern u32 *vlib_buffer_state_validation_lock;
710 extern uword *vlib_buffer_state_validation_hash;
711 extern void *vlib_buffer_state_heap;
715 vlib_validate_buffer_in_use (vlib_buffer_t * b, u32 expected)
721 oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
723 while (__sync_lock_test_and_set (vlib_buffer_state_validation_lock, 1))
726 p = hash_get (vlib_buffer_state_validation_hash, b);
728 /* If we don't know about b, declare it to be in the expected state */
731 hash_set (vlib_buffer_state_validation_hash, b, expected);
735 if (p[0] != expected)
739 vlib_main_t *vm = &vlib_global_main;
743 bi = vlib_get_buffer_index (vm, b);
745 clib_mem_set_heap (oldheap);
746 clib_warning ("%.6f buffer %llx (%d): %s, not %s",
747 vlib_time_now (vm), bi,
748 p[0] ? "busy" : "free", expected ? "busy" : "free");
752 CLIB_MEMORY_BARRIER ();
753 *vlib_buffer_state_validation_lock = 0;
754 clib_mem_set_heap (oldheap);
759 vlib_validate_buffer_set_in_use (vlib_buffer_t * b, u32 expected)
764 oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
766 while (__sync_lock_test_and_set (vlib_buffer_state_validation_lock, 1))
769 hash_set (vlib_buffer_state_validation_hash, b, expected);
771 CLIB_MEMORY_BARRIER ();
772 *vlib_buffer_state_validation_lock = 0;
773 clib_mem_set_heap (oldheap);
777 #endif /* included_vlib_buffer_funcs_h */
780 * fd.io coding-style-patch-verification: ON
783 * eval: (c-set-style "gnu")