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.
16 * buffer.c: allocate/free network buffers.
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.
43 * Allocate/free network buffers.
46 #include <rte_config.h>
48 #include <rte_common.h>
50 #include <rte_memory.h>
51 #include <rte_memzone.h>
52 #include <rte_tailq.h>
54 #include <rte_per_lcore.h>
55 #include <rte_launch.h>
56 #include <rte_atomic.h>
57 #include <rte_cycles.h>
58 #include <rte_prefetch.h>
59 #include <rte_lcore.h>
60 #include <rte_per_lcore.h>
61 #include <rte_branch_prediction.h>
62 #include <rte_interrupts.h>
64 #include <rte_random.h>
65 #include <rte_debug.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
69 #include <rte_mempool.h>
71 #include <rte_version.h>
73 #include <vlib/vlib.h>
74 #include <vnet/vnet.h>
75 #include <dpdk/device/dpdk.h>
76 #include <dpdk/device/dpdk_priv.h>
79 STATIC_ASSERT (VLIB_BUFFER_PRE_DATA_SIZE == RTE_PKTMBUF_HEADROOM,
80 "VLIB_BUFFER_PRE_DATA_SIZE must be equal to RTE_PKTMBUF_HEADROOM");
84 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
85 struct rte_mbuf ***mbuf_pending_free_list;
87 /* cached last pool */
88 struct rte_mempool *last_pool;
89 u8 last_buffer_pool_index;
90 } dpdk_buffer_per_thread_data;
94 dpdk_buffer_per_thread_data *ptd;
97 dpdk_buffer_main_t dpdk_buffer_main;
99 static_always_inline void
100 dpdk_rte_pktmbuf_free (vlib_main_t * vm, u32 thread_index, vlib_buffer_t * b)
102 vlib_buffer_t *hb = b;
103 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
104 dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
107 mb = rte_mbuf_from_vlib_buffer (hb);
111 next = b->next_buffer;
112 mb = rte_mbuf_from_vlib_buffer (b);
114 if (PREDICT_FALSE (b->n_add_refs))
116 rte_mbuf_refcnt_update (mb, b->n_add_refs);
120 mb = rte_pktmbuf_prefree_seg (mb);
123 if (mb->pool != d->last_pool)
125 d->last_pool = mb->pool;
126 dpdk_mempool_private_t *privp = rte_mempool_get_priv (d->last_pool);
127 d->last_buffer_pool_index = privp->buffer_pool_index;
128 vec_validate_aligned (d->mbuf_pending_free_list,
129 d->last_buffer_pool_index,
130 CLIB_CACHE_LINE_BYTES);
132 vec_add1 (d->mbuf_pending_free_list[d->last_buffer_pool_index], mb);
135 if (flags & VLIB_BUFFER_NEXT_PRESENT)
137 b = vlib_get_buffer (vm, next);
142 #ifndef CLIB_MULTIARCH_VARIANT
144 del_free_list (vlib_main_t * vm, vlib_buffer_free_list_t * f)
148 u32 thread_index = vlib_get_thread_index ();
150 for (i = 0; i < vec_len (f->buffers); i++)
152 b = vlib_get_buffer (vm, f->buffers[i]);
153 dpdk_rte_pktmbuf_free (vm, thread_index, b);
157 vec_free (f->buffers);
160 /* Add buffer free list. */
162 dpdk_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index)
164 vlib_buffer_main_t *bm = vm->buffer_main;
165 vlib_buffer_free_list_t *f;
169 ASSERT (vlib_get_thread_index () == 0);
171 f = vlib_buffer_get_free_list (vm, free_list_index);
173 merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes);
174 if (merge_index != ~0 && merge_index != free_list_index)
176 vlib_buffer_merge_free_lists (pool_elt_at_index
177 (bm->buffer_free_list_pool, merge_index),
181 del_free_list (vm, f);
184 memset (f, 0xab, sizeof (f[0]));
186 pool_put (bm->buffer_free_list_pool, f);
188 for (i = 1; i < vec_len (vlib_mains); i++)
190 bm = vlib_mains[i]->buffer_main;
191 f = vlib_buffer_get_free_list (vlib_mains[i], free_list_index);;
192 memset (f, 0xab, sizeof (f[0]));
193 pool_put (bm->buffer_free_list_pool, f);
198 /* Make sure free list has at least given number of free buffers. */
200 CLIB_MULTIARCH_FN (dpdk_buffer_fill_free_list) (vlib_main_t * vm,
201 vlib_buffer_free_list_t * fl,
202 uword min_free_buffers)
204 dpdk_main_t *dm = &dpdk_main;
205 vlib_buffer_t *b0, *b1, *b2, *b3;
207 u32 bi0, bi1, bi2, bi3;
208 unsigned socket_id = rte_socket_id ();
209 struct rte_mempool *rmp = dm->pktmbuf_pools[socket_id];
210 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
211 struct rte_mbuf *mb0, *mb1, *mb2, *mb3;
215 if (PREDICT_FALSE (rmp == 0))
218 /* Already have enough free buffers on free list? */
219 n = min_free_buffers - vec_len (fl->buffers);
221 return min_free_buffers;
223 /* Always allocate round number of buffers. */
224 n = round_pow2 (n, CLIB_CACHE_LINE_BYTES / sizeof (u32));
226 /* Always allocate new buffers in reasonably large sized chunks. */
227 n = clib_max (n, fl->min_n_buffers_each_physmem_alloc);
229 vec_validate_aligned (vm->mbuf_alloc_list, n - 1, CLIB_CACHE_LINE_BYTES);
231 if (rte_mempool_get_bulk (rmp, vm->mbuf_alloc_list, n) < 0)
234 memset (&bt, 0, sizeof (vlib_buffer_t));
235 vlib_buffer_init_for_free_list (&bt, fl);
236 bt.buffer_pool_index = privp->buffer_pool_index;
238 _vec_len (vm->mbuf_alloc_list) = n;
241 int f = vec_len (fl->buffers);
242 vec_resize_aligned (fl->buffers, n, CLIB_CACHE_LINE_BYTES);
246 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
247 (vm->mbuf_alloc_list[i + 4]), STORE);
248 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
249 (vm->mbuf_alloc_list[i + 5]), STORE);
250 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
251 (vm->mbuf_alloc_list[i + 6]), STORE);
252 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
253 (vm->mbuf_alloc_list[i + 7]), STORE);
255 mb0 = vm->mbuf_alloc_list[i];
256 mb1 = vm->mbuf_alloc_list[i + 1];
257 mb2 = vm->mbuf_alloc_list[i + 2];
258 mb3 = vm->mbuf_alloc_list[i + 3];
260 b0 = vlib_buffer_from_rte_mbuf (mb0);
261 b1 = vlib_buffer_from_rte_mbuf (mb1);
262 b2 = vlib_buffer_from_rte_mbuf (mb2);
263 b3 = vlib_buffer_from_rte_mbuf (mb3);
265 bi0 = vlib_get_buffer_index (vm, b0);
266 bi1 = vlib_get_buffer_index (vm, b1);
267 bi2 = vlib_get_buffer_index (vm, b2);
268 bi3 = vlib_get_buffer_index (vm, b3);
270 fl->buffers[f++] = bi0;
271 fl->buffers[f++] = bi1;
272 fl->buffers[f++] = bi2;
273 fl->buffers[f++] = bi3;
275 clib_memcpy64_x4 (b0, b1, b2, b3, &bt);
277 if (fl->buffer_init_function)
279 fl->buffer_init_function (vm, fl, &bi0, 1);
280 fl->buffer_init_function (vm, fl, &bi1, 1);
281 fl->buffer_init_function (vm, fl, &bi2, 1);
282 fl->buffer_init_function (vm, fl, &bi3, 1);
289 mb0 = vm->mbuf_alloc_list[i];
291 b0 = vlib_buffer_from_rte_mbuf (mb0);
292 bi0 = vlib_get_buffer_index (vm, b0);
294 fl->buffers[f++] = bi0;
295 clib_memcpy (b0, &bt, sizeof (vlib_buffer_t));
297 if (fl->buffer_init_function)
298 fl->buffer_init_function (vm, fl, &bi0, 1);
307 static_always_inline void
308 dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
312 b = vlib_get_buffer (vm, bi);
313 mb = rte_mbuf_from_vlib_buffer (b);
314 CLIB_PREFETCH (mb, 2 * CLIB_CACHE_LINE_BYTES, STORE);
315 CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
318 static_always_inline void
319 recycle_or_free (vlib_main_t * vm, vlib_buffer_main_t * bm, u32 bi,
322 vlib_buffer_free_list_t *fl;
323 u32 thread_index = vlib_get_thread_index ();
325 fl = vlib_buffer_get_buffer_free_list (vm, b, &fi);
327 /* The only current use of this callback: multicast recycle */
328 if (PREDICT_FALSE (fl->buffers_added_to_freelist_function != 0))
332 vlib_buffer_add_to_free_list (vm, fl, bi,
333 (b->flags & VLIB_BUFFER_RECYCLE) == 0);
335 for (j = 0; j < vec_len (bm->announce_list); j++)
337 if (fl == bm->announce_list[j])
338 goto already_announced;
340 vec_add1 (bm->announce_list, fl);
346 if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_RECYCLE) == 0))
347 dpdk_rte_pktmbuf_free (vm, thread_index, b);
351 static_always_inline void
352 vlib_buffer_free_inline (vlib_main_t * vm,
353 u32 * buffers, u32 n_buffers, u32 follow_buffer_next)
355 vlib_buffer_main_t *bm = vm->buffer_main;
356 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
357 vlib_buffer_t *b0, *b1, *b2, *b3;
358 u32 thread_index = vlib_get_thread_index ();
359 dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
361 u32 (*cb) (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
362 u32 follow_buffer_next);
364 cb = bm->buffer_free_callback;
366 if (PREDICT_FALSE (cb != 0))
367 n_buffers = (*cb) (vm, buffers, n_buffers, follow_buffer_next);
372 while (i + 7 < n_buffers)
374 dpdk_prefetch_buffer_by_index (vm, buffers[i + 4]);
375 dpdk_prefetch_buffer_by_index (vm, buffers[i + 5]);
376 dpdk_prefetch_buffer_by_index (vm, buffers[i + 6]);
377 dpdk_prefetch_buffer_by_index (vm, buffers[i + 7]);
379 b0 = vlib_get_buffer (vm, buffers[i]);
380 b1 = vlib_get_buffer (vm, buffers[i + 1]);
381 b2 = vlib_get_buffer (vm, buffers[i + 2]);
382 b3 = vlib_get_buffer (vm, buffers[i + 3]);
384 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
385 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
386 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
387 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
389 recycle_or_free (vm, bm, buffers[i], b0);
390 recycle_or_free (vm, bm, buffers[i + 1], b1);
391 recycle_or_free (vm, bm, buffers[i + 2], b2);
392 recycle_or_free (vm, bm, buffers[i + 3], b3);
396 while (i < n_buffers)
398 b0 = vlib_get_buffer (vm, buffers[i]);
399 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
400 recycle_or_free (vm, bm, buffers[i], b0);
403 if (vec_len (bm->announce_list))
405 vlib_buffer_free_list_t *fl;
406 for (i = 0; i < vec_len (bm->announce_list); i++)
408 fl = bm->announce_list[i];
409 fl->buffers_added_to_freelist_function (vm, fl);
411 _vec_len (bm->announce_list) = 0;
414 vec_foreach_index (i, d->mbuf_pending_free_list)
416 int len = vec_len (d->mbuf_pending_free_list[i]);
419 rte_mempool_put_bulk (d->mbuf_pending_free_list[i][len - 1]->pool,
420 (void *) d->mbuf_pending_free_list[i], len);
421 vec_reset_length (d->mbuf_pending_free_list[i]);
427 CLIB_MULTIARCH_FN (dpdk_buffer_free) (vlib_main_t * vm, u32 * buffers,
430 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
435 CLIB_MULTIARCH_FN (dpdk_buffer_free_no_next) (vlib_main_t * vm, u32 * buffers,
438 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
442 #ifndef CLIB_MULTIARCH_VARIANT
444 dpdk_packet_template_init (vlib_main_t * vm,
447 uword n_packet_data_bytes,
448 uword min_n_buffers_each_physmem_alloc, u8 * name)
450 vlib_packet_template_t *t = (vlib_packet_template_t *) vt;
452 vlib_worker_thread_barrier_sync (vm);
453 memset (t, 0, sizeof (t[0]));
455 vec_add (t->packet_data, packet_data, n_packet_data_bytes);
457 vlib_worker_thread_barrier_release (vm);
461 dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
462 u32 num_elts, u32 pool_priv_size, u16 cache_size, u8 numa,
463 struct rte_mempool **_mp, vlib_physmem_region_index_t * pri)
465 struct rte_mempool *mp;
466 vlib_physmem_region_t *pr;
467 clib_error_t *error = 0;
471 obj_size = rte_mempool_calc_obj_size (elt_size, 0, 0);
472 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
473 size = rte_mempool_xmem_size (num_elts, obj_size, 21);
475 size = rte_mempool_xmem_size (num_elts, obj_size, 21, 0);
479 vlib_physmem_region_alloc (vm, (i8 *) pool_name, size, numa, 0, pri);
483 pr = vlib_physmem_get_region (vm, pri[0]);
486 rte_mempool_create_empty ((i8 *) pool_name, num_elts, elt_size,
487 512, pool_priv_size, numa, 0);
489 return clib_error_return (0, "failed to create %s", pool_name);
491 rte_mempool_set_ops_byname (mp, RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
493 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
495 rte_mempool_populate_phys_tab (mp, pr->mem, pr->page_table, pr->n_pages,
496 pr->log2_page_size, NULL, NULL);
499 rte_mempool_populate_iova_tab (mp, pr->mem, pr->page_table, pr->n_pages,
500 pr->log2_page_size, NULL, NULL);
502 if (ret != (i32) mp->size)
504 rte_mempool_free (mp);
505 return clib_error_return (0, "failed to populate %s", pool_name);
514 dpdk_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
517 dpdk_main_t *dm = &dpdk_main;
518 struct rte_mempool *rmp;
519 dpdk_mempool_private_t priv;
520 vlib_physmem_region_index_t pri;
521 clib_error_t *error = 0;
525 vec_validate_aligned (dm->pktmbuf_pools, socket_id, CLIB_CACHE_LINE_BYTES);
527 /* pool already exists, nothing to do */
528 if (dm->pktmbuf_pools[socket_id])
531 pool_name = format (0, "dpdk_mbuf_pool_socket%u%c", socket_id, 0);
533 elt_size = sizeof (struct rte_mbuf) +
534 VLIB_BUFFER_HDR_SIZE /* priv size */ +
535 VLIB_BUFFER_PRE_DATA_SIZE + VLIB_BUFFER_DATA_SIZE; /*data room size */
538 dpdk_pool_create (vm, pool_name, elt_size, num_mbufs,
539 sizeof (dpdk_mempool_private_t), 512, socket_id,
542 vec_free (pool_name);
546 priv.mbp_priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
547 VLIB_BUFFER_DATA_SIZE;
548 priv.mbp_priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;
550 /* call the mempool priv initializer */
551 rte_pktmbuf_pool_init (rmp, &priv);
553 /* call the object initializers */
554 rte_mempool_obj_iter (rmp, rte_pktmbuf_init, 0);
556 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
557 privp->buffer_pool_index = vlib_buffer_add_physmem_region (vm, pri);
559 dm->pktmbuf_pools[socket_id] = rmp;
564 clib_error_report (error);
566 /* no usable pool for this socket, try to use pool from another one */
567 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
569 if (dm->pktmbuf_pools[i])
571 clib_warning ("WARNING: Failed to allocate mempool for CPU socket "
572 "%u. Threads running on socket %u will use socket %u "
573 "mempool.", socket_id, socket_id, i);
574 dm->pktmbuf_pools[socket_id] = dm->pktmbuf_pools[i];
579 return clib_error_return (0, "failed to allocate mempool on socket %u",
585 u32 *vlib_buffer_state_validation_lock;
586 uword *vlib_buffer_state_validation_hash;
587 void *vlib_buffer_state_heap;
589 static clib_error_t *
590 buffer_state_validation_init (vlib_main_t * vm)
594 vlib_buffer_state_heap = mheap_alloc (0, 10 << 20);
596 oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
598 vlib_buffer_state_validation_hash = hash_create (0, sizeof (uword));
599 vec_validate_aligned (vlib_buffer_state_validation_lock, 0,
600 CLIB_CACHE_LINE_BYTES);
601 clib_mem_set_heap (oldheap);
605 VLIB_INIT_FUNCTION (buffer_state_validation_init);
609 struct dpdk_validate_buf_result
615 #define DPDK_TRAJECTORY_POISON 31
618 dpdk_buffer_validate_trajectory (struct rte_mempool *mp, void *opaque,
619 void *obj, unsigned obj_idx)
622 struct dpdk_validate_buf_result *counter = opaque;
623 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
624 if (b->pre_data[0] != 0)
626 if (b->pre_data[0] == DPDK_TRAJECTORY_POISON)
627 counter->uninitialized++;
634 dpdk_buffer_validate_trajectory_all (u32 * uninitialized)
636 dpdk_main_t *dm = &dpdk_main;
637 struct dpdk_validate_buf_result counter = { 0 };
640 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
641 rte_mempool_obj_iter (dm->pktmbuf_pools[i],
642 dpdk_buffer_validate_trajectory, &counter);
644 *uninitialized = counter.uninitialized;
645 return counter.invalid;
649 dpdk_buffer_poison_trajectory (struct rte_mempool *mp, void *opaque,
650 void *obj, unsigned obj_idx)
653 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
654 b->pre_data[0] = DPDK_TRAJECTORY_POISON;
658 dpdk_buffer_poison_trajectory_all (void)
660 dpdk_main_t *dm = &dpdk_main;
663 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
664 rte_mempool_obj_iter (dm->pktmbuf_pools[i], dpdk_buffer_poison_trajectory,
669 static clib_error_t *
670 dpdk_buffer_init (vlib_main_t * vm)
672 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
673 vlib_thread_main_t *tm = vlib_get_thread_main ();
674 vec_validate_aligned (dbm->ptd, tm->n_vlib_mains - 1,
675 CLIB_CACHE_LINE_BYTES);
679 VLIB_INIT_FUNCTION (dpdk_buffer_init);
682 VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
683 .vlib_buffer_fill_free_list_cb = &dpdk_buffer_fill_free_list,
684 .vlib_buffer_free_cb = &dpdk_buffer_free,
685 .vlib_buffer_free_no_next_cb = &dpdk_buffer_free_no_next,
686 .vlib_packet_template_init_cb = &dpdk_packet_template_init,
687 .vlib_buffer_delete_free_list_cb = &dpdk_buffer_delete_free_list,
692 vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx512;
693 vlib_buffer_fill_free_list_cb_t __clib_weak dpdk_buffer_fill_free_list_avx2;
694 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx512;
695 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx2;
696 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx512;
697 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx2;
699 static void __clib_constructor
700 dpdk_input_multiarch_select (void)
702 vlib_buffer_callbacks_t *cb = &__dpdk_buffer_callbacks;
703 if (dpdk_buffer_fill_free_list_avx512 && clib_cpu_supports_avx512f ())
705 cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx512;
706 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx512;
707 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx512;
709 else if (dpdk_buffer_fill_free_list_avx2 && clib_cpu_supports_avx2 ())
711 cb->vlib_buffer_fill_free_list_cb = dpdk_buffer_fill_free_list_avx2;
712 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx2;
713 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx2;
721 * fd.io coding-style-patch-verification: ON
724 * eval: (c-set-style "gnu")