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 fill_free_list (vlib_main_t * vm,
201 vlib_buffer_free_list_t * fl, uword min_free_buffers)
203 dpdk_main_t *dm = &dpdk_main;
204 vlib_buffer_t *b0, *b1, *b2, *b3;
206 u32 bi0, bi1, bi2, bi3;
207 unsigned socket_id = rte_socket_id ();
208 struct rte_mempool *rmp = dm->pktmbuf_pools[socket_id];
209 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
210 struct rte_mbuf *mb0, *mb1, *mb2, *mb3;
214 if (PREDICT_FALSE (rmp == 0))
217 /* Already have enough free buffers on free list? */
218 n = min_free_buffers - vec_len (fl->buffers);
220 return min_free_buffers;
222 /* Always allocate round number of buffers. */
223 n = round_pow2 (n, CLIB_CACHE_LINE_BYTES / sizeof (u32));
225 /* Always allocate new buffers in reasonably large sized chunks. */
226 n = clib_max (n, fl->min_n_buffers_each_physmem_alloc);
228 vec_validate_aligned (vm->mbuf_alloc_list, n - 1, CLIB_CACHE_LINE_BYTES);
230 if (rte_mempool_get_bulk (rmp, vm->mbuf_alloc_list, n) < 0)
233 memset (&bt, 0, sizeof (vlib_buffer_t));
234 vlib_buffer_init_for_free_list (&bt, fl);
235 bt.buffer_pool_index = privp->buffer_pool_index;
237 _vec_len (vm->mbuf_alloc_list) = n;
240 int f = vec_len (fl->buffers);
241 vec_resize_aligned (fl->buffers, n, CLIB_CACHE_LINE_BYTES);
245 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
246 (vm->mbuf_alloc_list[i + 4]), STORE);
247 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
248 (vm->mbuf_alloc_list[i + 5]), STORE);
249 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
250 (vm->mbuf_alloc_list[i + 6]), STORE);
251 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
252 (vm->mbuf_alloc_list[i + 7]), STORE);
254 mb0 = vm->mbuf_alloc_list[i];
255 mb1 = vm->mbuf_alloc_list[i + 1];
256 mb2 = vm->mbuf_alloc_list[i + 2];
257 mb3 = vm->mbuf_alloc_list[i + 3];
259 b0 = vlib_buffer_from_rte_mbuf (mb0);
260 b1 = vlib_buffer_from_rte_mbuf (mb1);
261 b2 = vlib_buffer_from_rte_mbuf (mb2);
262 b3 = vlib_buffer_from_rte_mbuf (mb3);
264 bi0 = vlib_get_buffer_index (vm, b0);
265 bi1 = vlib_get_buffer_index (vm, b1);
266 bi2 = vlib_get_buffer_index (vm, b2);
267 bi3 = vlib_get_buffer_index (vm, b3);
269 fl->buffers[f++] = bi0;
270 fl->buffers[f++] = bi1;
271 fl->buffers[f++] = bi2;
272 fl->buffers[f++] = bi3;
274 clib_memcpy64_x4 (b0, b1, b2, b3, &bt);
276 if (fl->buffer_init_function)
278 fl->buffer_init_function (vm, fl, &bi0, 1);
279 fl->buffer_init_function (vm, fl, &bi1, 1);
280 fl->buffer_init_function (vm, fl, &bi2, 1);
281 fl->buffer_init_function (vm, fl, &bi3, 1);
288 mb0 = vm->mbuf_alloc_list[i];
290 b0 = vlib_buffer_from_rte_mbuf (mb0);
291 bi0 = vlib_get_buffer_index (vm, b0);
293 fl->buffers[f++] = bi0;
294 clib_memcpy (b0, &bt, sizeof (vlib_buffer_t));
296 if (fl->buffer_init_function)
297 fl->buffer_init_function (vm, fl, &bi0, 1);
307 alloc_from_free_list (vlib_main_t * vm,
308 vlib_buffer_free_list_t * free_list,
309 u32 * alloc_buffers, u32 n_alloc_buffers)
316 n_filled = fill_free_list (vm, free_list, n_alloc_buffers);
320 len = vec_len (free_list->buffers);
321 ASSERT (len >= n_alloc_buffers);
323 src = free_list->buffers + len - n_alloc_buffers;
324 clib_memcpy (dst, src, n_alloc_buffers * sizeof (u32));
326 _vec_len (free_list->buffers) -= n_alloc_buffers;
328 return n_alloc_buffers;
331 /* Allocate a given number of buffers into given array.
332 Returns number actually allocated which will be either zero or
335 CLIB_MULTIARCH_FN (dpdk_buffer_alloc) (vlib_main_t * vm, u32 * buffers,
338 vlib_buffer_main_t *bm = vm->buffer_main;
340 return alloc_from_free_list
342 pool_elt_at_index (bm->buffer_free_list_pool,
343 VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX),
349 CLIB_MULTIARCH_FN (dpdk_buffer_alloc_from_free_list) (vlib_main_t * vm,
354 vlib_buffer_main_t *bm = vm->buffer_main;
355 vlib_buffer_free_list_t *f;
356 f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index);
357 return alloc_from_free_list (vm, f, buffers, n_buffers);
360 static_always_inline void
361 dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
365 b = vlib_get_buffer (vm, bi);
366 mb = rte_mbuf_from_vlib_buffer (b);
367 CLIB_PREFETCH (mb, 2 * CLIB_CACHE_LINE_BYTES, STORE);
368 CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
371 static_always_inline void
372 recycle_or_free (vlib_main_t * vm, vlib_buffer_main_t * bm, u32 bi,
375 vlib_buffer_free_list_t *fl;
376 u32 thread_index = vlib_get_thread_index ();
378 fl = vlib_buffer_get_buffer_free_list (vm, b, &fi);
380 /* The only current use of this callback: multicast recycle */
381 if (PREDICT_FALSE (fl->buffers_added_to_freelist_function != 0))
385 vlib_buffer_add_to_free_list (vm, fl, bi,
386 (b->flags & VLIB_BUFFER_RECYCLE) == 0);
388 for (j = 0; j < vec_len (bm->announce_list); j++)
390 if (fl == bm->announce_list[j])
391 goto already_announced;
393 vec_add1 (bm->announce_list, fl);
399 if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_RECYCLE) == 0))
400 dpdk_rte_pktmbuf_free (vm, thread_index, b);
404 static_always_inline void
405 vlib_buffer_free_inline (vlib_main_t * vm,
406 u32 * buffers, u32 n_buffers, u32 follow_buffer_next)
408 vlib_buffer_main_t *bm = vm->buffer_main;
409 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
410 vlib_buffer_t *b0, *b1, *b2, *b3;
411 u32 thread_index = vlib_get_thread_index ();
412 dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
414 u32 (*cb) (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
415 u32 follow_buffer_next);
417 cb = bm->buffer_free_callback;
419 if (PREDICT_FALSE (cb != 0))
420 n_buffers = (*cb) (vm, buffers, n_buffers, follow_buffer_next);
425 while (i + 7 < n_buffers)
427 dpdk_prefetch_buffer_by_index (vm, buffers[i + 4]);
428 dpdk_prefetch_buffer_by_index (vm, buffers[i + 5]);
429 dpdk_prefetch_buffer_by_index (vm, buffers[i + 6]);
430 dpdk_prefetch_buffer_by_index (vm, buffers[i + 7]);
432 b0 = vlib_get_buffer (vm, buffers[i]);
433 b1 = vlib_get_buffer (vm, buffers[i + 1]);
434 b2 = vlib_get_buffer (vm, buffers[i + 2]);
435 b3 = vlib_get_buffer (vm, buffers[i + 3]);
437 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
438 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
439 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
440 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
442 recycle_or_free (vm, bm, buffers[i], b0);
443 recycle_or_free (vm, bm, buffers[i + 1], b1);
444 recycle_or_free (vm, bm, buffers[i + 2], b2);
445 recycle_or_free (vm, bm, buffers[i + 3], b3);
449 while (i < n_buffers)
451 b0 = vlib_get_buffer (vm, buffers[i]);
452 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
453 recycle_or_free (vm, bm, buffers[i], b0);
456 if (vec_len (bm->announce_list))
458 vlib_buffer_free_list_t *fl;
459 for (i = 0; i < vec_len (bm->announce_list); i++)
461 fl = bm->announce_list[i];
462 fl->buffers_added_to_freelist_function (vm, fl);
464 _vec_len (bm->announce_list) = 0;
467 vec_foreach_index (i, d->mbuf_pending_free_list)
469 int len = vec_len (d->mbuf_pending_free_list[i]);
472 rte_mempool_put_bulk (d->mbuf_pending_free_list[i][len - 1]->pool,
473 (void *) d->mbuf_pending_free_list[i], len);
474 vec_reset_length (d->mbuf_pending_free_list[i]);
480 CLIB_MULTIARCH_FN (dpdk_buffer_free) (vlib_main_t * vm, u32 * buffers,
483 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
488 CLIB_MULTIARCH_FN (dpdk_buffer_free_no_next) (vlib_main_t * vm, u32 * buffers,
491 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
495 #ifndef CLIB_MULTIARCH_VARIANT
497 dpdk_packet_template_init (vlib_main_t * vm,
500 uword n_packet_data_bytes,
501 uword min_n_buffers_each_physmem_alloc, u8 * name)
503 vlib_packet_template_t *t = (vlib_packet_template_t *) vt;
505 vlib_worker_thread_barrier_sync (vm);
506 memset (t, 0, sizeof (t[0]));
508 vec_add (t->packet_data, packet_data, n_packet_data_bytes);
510 vlib_worker_thread_barrier_release (vm);
514 dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
515 u32 num_elts, u32 pool_priv_size, u16 cache_size, u8 numa,
516 struct rte_mempool **_mp, vlib_physmem_region_index_t * pri)
518 struct rte_mempool *mp;
519 vlib_physmem_region_t *pr;
520 clib_error_t *error = 0;
524 obj_size = rte_mempool_calc_obj_size (elt_size, 0, 0);
525 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
526 size = rte_mempool_xmem_size (num_elts, obj_size, 21);
528 size = rte_mempool_xmem_size (num_elts, obj_size, 21, 0);
532 vlib_physmem_region_alloc (vm, (i8 *) pool_name, size, numa, 0, pri);
536 pr = vlib_physmem_get_region (vm, pri[0]);
539 rte_mempool_create_empty ((i8 *) pool_name, num_elts, elt_size,
540 512, pool_priv_size, numa, 0);
542 return clib_error_return (0, "failed to create %s", pool_name);
544 rte_mempool_set_ops_byname (mp, RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
546 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
548 rte_mempool_populate_phys_tab (mp, pr->mem, pr->page_table, pr->n_pages,
549 pr->log2_page_size, NULL, NULL);
552 rte_mempool_populate_iova_tab (mp, pr->mem, pr->page_table, pr->n_pages,
553 pr->log2_page_size, NULL, NULL);
555 if (ret != (i32) mp->size)
557 rte_mempool_free (mp);
558 return clib_error_return (0, "failed to populate %s", pool_name);
567 dpdk_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
570 dpdk_main_t *dm = &dpdk_main;
571 struct rte_mempool *rmp;
572 dpdk_mempool_private_t priv;
573 vlib_physmem_region_index_t pri;
574 clib_error_t *error = 0;
578 vec_validate_aligned (dm->pktmbuf_pools, socket_id, CLIB_CACHE_LINE_BYTES);
580 /* pool already exists, nothing to do */
581 if (dm->pktmbuf_pools[socket_id])
584 pool_name = format (0, "dpdk_mbuf_pool_socket%u%c", socket_id, 0);
586 elt_size = sizeof (struct rte_mbuf) +
587 VLIB_BUFFER_HDR_SIZE /* priv size */ +
588 VLIB_BUFFER_PRE_DATA_SIZE + VLIB_BUFFER_DATA_SIZE; /*data room size */
591 dpdk_pool_create (vm, pool_name, elt_size, num_mbufs,
592 sizeof (dpdk_mempool_private_t), 512, socket_id,
595 vec_free (pool_name);
599 priv.mbp_priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
600 VLIB_BUFFER_DATA_SIZE;
601 priv.mbp_priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;
603 /* call the mempool priv initializer */
604 rte_pktmbuf_pool_init (rmp, &priv);
606 /* call the object initializers */
607 rte_mempool_obj_iter (rmp, rte_pktmbuf_init, 0);
609 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
610 privp->buffer_pool_index = vlib_buffer_add_physmem_region (vm, pri);
612 dm->pktmbuf_pools[socket_id] = rmp;
617 clib_error_report (error);
619 /* no usable pool for this socket, try to use pool from another one */
620 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
622 if (dm->pktmbuf_pools[i])
624 clib_warning ("WARNING: Failed to allocate mempool for CPU socket "
625 "%u. Threads running on socket %u will use socket %u "
626 "mempool.", socket_id, socket_id, i);
627 dm->pktmbuf_pools[socket_id] = dm->pktmbuf_pools[i];
632 return clib_error_return (0, "failed to allocate mempool on socket %u",
638 u32 *vlib_buffer_state_validation_lock;
639 uword *vlib_buffer_state_validation_hash;
640 void *vlib_buffer_state_heap;
642 static clib_error_t *
643 buffer_state_validation_init (vlib_main_t * vm)
647 vlib_buffer_state_heap = mheap_alloc (0, 10 << 20);
649 oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
651 vlib_buffer_state_validation_hash = hash_create (0, sizeof (uword));
652 vec_validate_aligned (vlib_buffer_state_validation_lock, 0,
653 CLIB_CACHE_LINE_BYTES);
654 clib_mem_set_heap (oldheap);
658 VLIB_INIT_FUNCTION (buffer_state_validation_init);
662 struct dpdk_validate_buf_result
668 #define DPDK_TRAJECTORY_POISON 31
671 dpdk_buffer_validate_trajectory (struct rte_mempool *mp, void *opaque,
672 void *obj, unsigned obj_idx)
675 struct dpdk_validate_buf_result *counter = opaque;
676 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
677 if (b->pre_data[0] != 0)
679 if (b->pre_data[0] == DPDK_TRAJECTORY_POISON)
680 counter->uninitialized++;
687 dpdk_buffer_validate_trajectory_all (u32 * uninitialized)
689 dpdk_main_t *dm = &dpdk_main;
690 struct dpdk_validate_buf_result counter = { 0 };
693 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
694 rte_mempool_obj_iter (dm->pktmbuf_pools[i],
695 dpdk_buffer_validate_trajectory, &counter);
697 *uninitialized = counter.uninitialized;
698 return counter.invalid;
702 dpdk_buffer_poison_trajectory (struct rte_mempool *mp, void *opaque,
703 void *obj, unsigned obj_idx)
706 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
707 b->pre_data[0] = DPDK_TRAJECTORY_POISON;
711 dpdk_buffer_poison_trajectory_all (void)
713 dpdk_main_t *dm = &dpdk_main;
716 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
717 rte_mempool_obj_iter (dm->pktmbuf_pools[i], dpdk_buffer_poison_trajectory,
722 static clib_error_t *
723 dpdk_buffer_init (vlib_main_t * vm)
725 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
726 vlib_thread_main_t *tm = vlib_get_thread_main ();
727 vec_validate_aligned (dbm->ptd, tm->n_vlib_mains - 1,
728 CLIB_CACHE_LINE_BYTES);
732 VLIB_INIT_FUNCTION (dpdk_buffer_init);
735 VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
736 .vlib_buffer_alloc_cb = &dpdk_buffer_alloc,
737 .vlib_buffer_alloc_from_free_list_cb = &dpdk_buffer_alloc_from_free_list,
738 .vlib_buffer_free_cb = &dpdk_buffer_free,
739 .vlib_buffer_free_no_next_cb = &dpdk_buffer_free_no_next,
740 .vlib_packet_template_init_cb = &dpdk_packet_template_init,
741 .vlib_buffer_delete_free_list_cb = &dpdk_buffer_delete_free_list,
746 vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx512;
747 vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx2;
748 vlib_buffer_alloc_from_free_list_cb_t __clib_weak
749 dpdk_buffer_alloc_from_free_list_avx512;
750 vlib_buffer_alloc_from_free_list_cb_t __clib_weak
751 dpdk_buffer_alloc_from_free_list_avx2;
752 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx512;
753 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx2;
754 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx512;
755 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx2;
757 static void __clib_constructor
758 dpdk_input_multiarch_select (void)
760 vlib_buffer_callbacks_t *cb = &__dpdk_buffer_callbacks;
761 if (dpdk_buffer_alloc_avx512 && clib_cpu_supports_avx512f ())
763 cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx512;
764 cb->vlib_buffer_alloc_from_free_list_cb =
765 dpdk_buffer_alloc_from_free_list_avx512;
766 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx512;
767 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx512;
769 else if (dpdk_buffer_alloc_avx2 && clib_cpu_supports_avx2 ())
771 cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx2;
772 cb->vlib_buffer_alloc_from_free_list_cb =
773 dpdk_buffer_alloc_from_free_list_avx2;
774 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx2;
775 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx2;
783 * fd.io coding-style-patch-verification: ON
786 * eval: (c-set-style "gnu")