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 struct rte_mbuf ***mbuf_pending_free_list;
86 /* cached last pool */
87 struct rte_mempool *last_pool;
88 u8 last_buffer_pool_index;
89 } dpdk_buffer_per_thread_data;
93 dpdk_buffer_per_thread_data *ptd;
96 dpdk_buffer_main_t dpdk_buffer_main;
98 static_always_inline void
99 dpdk_rte_pktmbuf_free (vlib_main_t * vm, u32 thread_index, vlib_buffer_t * b)
101 vlib_buffer_t *hb = b;
102 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
103 dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
106 mb = rte_mbuf_from_vlib_buffer (hb);
110 next = b->next_buffer;
111 mb = rte_mbuf_from_vlib_buffer (b);
113 if (PREDICT_FALSE (b->n_add_refs))
115 rte_mbuf_refcnt_update (mb, b->n_add_refs);
119 mb = rte_pktmbuf_prefree_seg (mb);
122 if (mb->pool != d->last_pool)
124 d->last_pool = mb->pool;
125 dpdk_mempool_private_t *privp = rte_mempool_get_priv (d->last_pool);
126 d->last_buffer_pool_index = privp->buffer_pool_index;
127 vec_validate_aligned (d->mbuf_pending_free_list,
128 d->last_buffer_pool_index,
129 CLIB_CACHE_LINE_BYTES);
131 vec_add1 (d->mbuf_pending_free_list[d->last_buffer_pool_index], mb);
134 if (flags & VLIB_BUFFER_NEXT_PRESENT)
136 b = vlib_get_buffer (vm, next);
141 #ifndef CLIB_MULTIARCH_VARIANT
143 del_free_list (vlib_main_t * vm, vlib_buffer_free_list_t * f)
147 u32 thread_index = vlib_get_thread_index ();
149 for (i = 0; i < vec_len (f->buffers); i++)
151 b = vlib_get_buffer (vm, f->buffers[i]);
152 dpdk_rte_pktmbuf_free (vm, thread_index, b);
156 vec_free (f->buffers);
159 /* Add buffer free list. */
161 dpdk_buffer_delete_free_list (vlib_main_t * vm, u32 free_list_index)
163 vlib_buffer_main_t *bm = vm->buffer_main;
164 vlib_buffer_free_list_t *f;
168 ASSERT (vlib_get_thread_index () == 0);
170 f = vlib_buffer_get_free_list (vm, free_list_index);
172 merge_index = vlib_buffer_get_free_list_with_size (vm, f->n_data_bytes);
173 if (merge_index != ~0 && merge_index != free_list_index)
175 vlib_buffer_merge_free_lists (pool_elt_at_index
176 (bm->buffer_free_list_pool, merge_index),
180 del_free_list (vm, f);
183 memset (f, 0xab, sizeof (f[0]));
185 pool_put (bm->buffer_free_list_pool, f);
187 for (i = 1; i < vec_len (vlib_mains); i++)
189 bm = vlib_mains[i]->buffer_main;
190 f = vlib_buffer_get_free_list (vlib_mains[i], free_list_index);;
191 memset (f, 0xab, sizeof (f[0]));
192 pool_put (bm->buffer_free_list_pool, f);
197 /* Make sure free list has at least given number of free buffers. */
199 fill_free_list (vlib_main_t * vm,
200 vlib_buffer_free_list_t * fl, uword min_free_buffers)
202 dpdk_main_t *dm = &dpdk_main;
203 vlib_buffer_t *b0, *b1, *b2, *b3;
205 u32 bi0, bi1, bi2, bi3;
206 unsigned socket_id = rte_socket_id ();
207 struct rte_mempool *rmp = dm->pktmbuf_pools[socket_id];
208 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
209 struct rte_mbuf *mb0, *mb1, *mb2, *mb3;
213 if (PREDICT_FALSE (rmp == 0))
216 /* Already have enough free buffers on free list? */
217 n = min_free_buffers - vec_len (fl->buffers);
219 return min_free_buffers;
221 /* Always allocate round number of buffers. */
222 n = round_pow2 (n, CLIB_CACHE_LINE_BYTES / sizeof (u32));
224 /* Always allocate new buffers in reasonably large sized chunks. */
225 n = clib_max (n, fl->min_n_buffers_each_physmem_alloc);
227 vec_validate_aligned (vm->mbuf_alloc_list, n - 1, CLIB_CACHE_LINE_BYTES);
229 if (rte_mempool_get_bulk (rmp, vm->mbuf_alloc_list, n) < 0)
232 memset (&bt, 0, sizeof (vlib_buffer_t));
233 vlib_buffer_init_for_free_list (&bt, fl);
234 bt.buffer_pool_index = privp->buffer_pool_index;
236 _vec_len (vm->mbuf_alloc_list) = n;
239 int f = vec_len (fl->buffers);
240 vec_resize_aligned (fl->buffers, n, CLIB_CACHE_LINE_BYTES);
244 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
245 (vm->mbuf_alloc_list[i + 4]), STORE);
246 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
247 (vm->mbuf_alloc_list[i + 5]), STORE);
248 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
249 (vm->mbuf_alloc_list[i + 6]), STORE);
250 vlib_prefetch_buffer_header (vlib_buffer_from_rte_mbuf
251 (vm->mbuf_alloc_list[i + 7]), STORE);
253 mb0 = vm->mbuf_alloc_list[i];
254 mb1 = vm->mbuf_alloc_list[i + 1];
255 mb2 = vm->mbuf_alloc_list[i + 2];
256 mb3 = vm->mbuf_alloc_list[i + 3];
258 b0 = vlib_buffer_from_rte_mbuf (mb0);
259 b1 = vlib_buffer_from_rte_mbuf (mb1);
260 b2 = vlib_buffer_from_rte_mbuf (mb2);
261 b3 = vlib_buffer_from_rte_mbuf (mb3);
263 bi0 = vlib_get_buffer_index (vm, b0);
264 bi1 = vlib_get_buffer_index (vm, b1);
265 bi2 = vlib_get_buffer_index (vm, b2);
266 bi3 = vlib_get_buffer_index (vm, b3);
268 fl->buffers[f++] = bi0;
269 fl->buffers[f++] = bi1;
270 fl->buffers[f++] = bi2;
271 fl->buffers[f++] = bi3;
273 clib_memcpy64_x4 (b0, b1, b2, b3, &bt);
275 if (fl->buffer_init_function)
277 fl->buffer_init_function (vm, fl, &bi0, 1);
278 fl->buffer_init_function (vm, fl, &bi1, 1);
279 fl->buffer_init_function (vm, fl, &bi2, 1);
280 fl->buffer_init_function (vm, fl, &bi3, 1);
287 mb0 = vm->mbuf_alloc_list[i];
289 b0 = vlib_buffer_from_rte_mbuf (mb0);
290 bi0 = vlib_get_buffer_index (vm, b0);
292 fl->buffers[f++] = bi0;
293 clib_memcpy (b0, &bt, sizeof (vlib_buffer_t));
295 if (fl->buffer_init_function)
296 fl->buffer_init_function (vm, fl, &bi0, 1);
306 alloc_from_free_list (vlib_main_t * vm,
307 vlib_buffer_free_list_t * free_list,
308 u32 * alloc_buffers, u32 n_alloc_buffers)
315 n_filled = fill_free_list (vm, free_list, n_alloc_buffers);
319 len = vec_len (free_list->buffers);
320 ASSERT (len >= n_alloc_buffers);
322 src = free_list->buffers + len - n_alloc_buffers;
323 clib_memcpy (dst, src, n_alloc_buffers * sizeof (u32));
325 _vec_len (free_list->buffers) -= n_alloc_buffers;
327 return n_alloc_buffers;
330 /* Allocate a given number of buffers into given array.
331 Returns number actually allocated which will be either zero or
334 CLIB_MULTIARCH_FN (dpdk_buffer_alloc) (vlib_main_t * vm, u32 * buffers,
337 vlib_buffer_main_t *bm = vm->buffer_main;
339 return alloc_from_free_list
341 pool_elt_at_index (bm->buffer_free_list_pool,
342 VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX),
348 CLIB_MULTIARCH_FN (dpdk_buffer_alloc_from_free_list) (vlib_main_t * vm,
353 vlib_buffer_main_t *bm = vm->buffer_main;
354 vlib_buffer_free_list_t *f;
355 f = pool_elt_at_index (bm->buffer_free_list_pool, free_list_index);
356 return alloc_from_free_list (vm, f, buffers, n_buffers);
359 static_always_inline void
360 dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
364 b = vlib_get_buffer (vm, bi);
365 mb = rte_mbuf_from_vlib_buffer (b);
366 CLIB_PREFETCH (mb, 2 * CLIB_CACHE_LINE_BYTES, STORE);
367 CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
370 static_always_inline void
371 recycle_or_free (vlib_main_t * vm, vlib_buffer_main_t * bm, u32 bi,
374 vlib_buffer_free_list_t *fl;
375 u32 thread_index = vlib_get_thread_index ();
377 fl = vlib_buffer_get_buffer_free_list (vm, b, &fi);
379 /* The only current use of this callback: multicast recycle */
380 if (PREDICT_FALSE (fl->buffers_added_to_freelist_function != 0))
384 vlib_buffer_add_to_free_list (vm, fl, bi,
385 (b->flags & VLIB_BUFFER_RECYCLE) == 0);
387 for (j = 0; j < vec_len (bm->announce_list); j++)
389 if (fl == bm->announce_list[j])
390 goto already_announced;
392 vec_add1 (bm->announce_list, fl);
398 if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_RECYCLE) == 0))
399 dpdk_rte_pktmbuf_free (vm, thread_index, b);
403 static_always_inline void
404 vlib_buffer_free_inline (vlib_main_t * vm,
405 u32 * buffers, u32 n_buffers, u32 follow_buffer_next)
407 vlib_buffer_main_t *bm = vm->buffer_main;
408 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
409 vlib_buffer_t *b0, *b1, *b2, *b3;
410 u32 thread_index = vlib_get_thread_index ();
411 dpdk_buffer_per_thread_data *d = vec_elt_at_index (dbm->ptd, thread_index);
413 u32 (*cb) (vlib_main_t * vm, u32 * buffers, u32 n_buffers,
414 u32 follow_buffer_next);
416 cb = bm->buffer_free_callback;
418 if (PREDICT_FALSE (cb != 0))
419 n_buffers = (*cb) (vm, buffers, n_buffers, follow_buffer_next);
424 while (i + 7 < n_buffers)
426 dpdk_prefetch_buffer_by_index (vm, buffers[i + 4]);
427 dpdk_prefetch_buffer_by_index (vm, buffers[i + 5]);
428 dpdk_prefetch_buffer_by_index (vm, buffers[i + 6]);
429 dpdk_prefetch_buffer_by_index (vm, buffers[i + 7]);
431 b0 = vlib_get_buffer (vm, buffers[i]);
432 b1 = vlib_get_buffer (vm, buffers[i + 1]);
433 b2 = vlib_get_buffer (vm, buffers[i + 2]);
434 b3 = vlib_get_buffer (vm, buffers[i + 3]);
436 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
437 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
438 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
439 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
441 recycle_or_free (vm, bm, buffers[i], b0);
442 recycle_or_free (vm, bm, buffers[i + 1], b1);
443 recycle_or_free (vm, bm, buffers[i + 2], b2);
444 recycle_or_free (vm, bm, buffers[i + 3], b3);
448 while (i < n_buffers)
450 b0 = vlib_get_buffer (vm, buffers[i]);
451 VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
452 recycle_or_free (vm, bm, buffers[i], b0);
455 if (vec_len (bm->announce_list))
457 vlib_buffer_free_list_t *fl;
458 for (i = 0; i < vec_len (bm->announce_list); i++)
460 fl = bm->announce_list[i];
461 fl->buffers_added_to_freelist_function (vm, fl);
463 _vec_len (bm->announce_list) = 0;
466 vec_foreach_index (i, d->mbuf_pending_free_list)
468 int len = vec_len (d->mbuf_pending_free_list[i]);
471 rte_mempool_put_bulk (d->mbuf_pending_free_list[i][len - 1]->pool,
472 (void *) d->mbuf_pending_free_list[i], len);
473 vec_reset_length (d->mbuf_pending_free_list[i]);
479 CLIB_MULTIARCH_FN (dpdk_buffer_free) (vlib_main_t * vm, u32 * buffers,
482 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
487 CLIB_MULTIARCH_FN (dpdk_buffer_free_no_next) (vlib_main_t * vm, u32 * buffers,
490 vlib_buffer_free_inline (vm, buffers, n_buffers, /* follow_buffer_next */
494 #ifndef CLIB_MULTIARCH_VARIANT
496 dpdk_packet_template_init (vlib_main_t * vm,
499 uword n_packet_data_bytes,
500 uword min_n_buffers_each_physmem_alloc, u8 * name)
502 vlib_packet_template_t *t = (vlib_packet_template_t *) vt;
504 vlib_worker_thread_barrier_sync (vm);
505 memset (t, 0, sizeof (t[0]));
507 vec_add (t->packet_data, packet_data, n_packet_data_bytes);
509 vlib_worker_thread_barrier_release (vm);
513 dpdk_pool_create (vlib_main_t * vm, u8 * pool_name, u32 elt_size,
514 u32 num_elts, u32 pool_priv_size, u16 cache_size, u8 numa,
515 struct rte_mempool **_mp, vlib_physmem_region_index_t * pri)
517 struct rte_mempool *mp;
518 vlib_physmem_region_t *pr;
519 clib_error_t *error = 0;
523 obj_size = rte_mempool_calc_obj_size (elt_size, 0, 0);
524 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
525 size = rte_mempool_xmem_size (num_elts, obj_size, 21);
527 size = rte_mempool_xmem_size (num_elts, obj_size, 21, 0);
531 vlib_physmem_region_alloc (vm, (i8 *) pool_name, size, numa, 0, pri);
535 pr = vlib_physmem_get_region (vm, pri[0]);
538 rte_mempool_create_empty ((i8 *) pool_name, num_elts, elt_size,
539 512, pool_priv_size, numa, 0);
541 return clib_error_return (0, "failed to create %s", pool_name);
543 rte_mempool_set_ops_byname (mp, RTE_MBUF_DEFAULT_MEMPOOL_OPS, NULL);
545 #if RTE_VERSION < RTE_VERSION_NUM(17, 11, 0, 0)
547 rte_mempool_populate_phys_tab (mp, pr->mem, pr->page_table, pr->n_pages,
548 pr->log2_page_size, NULL, NULL);
551 rte_mempool_populate_iova_tab (mp, pr->mem, pr->page_table, pr->n_pages,
552 pr->log2_page_size, NULL, NULL);
554 if (ret != (i32) mp->size)
556 rte_mempool_free (mp);
557 return clib_error_return (0, "failed to populate %s", pool_name);
566 dpdk_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
569 dpdk_main_t *dm = &dpdk_main;
570 struct rte_mempool *rmp;
571 dpdk_mempool_private_t priv;
572 vlib_physmem_region_index_t pri;
573 clib_error_t *error = 0;
577 vec_validate_aligned (dm->pktmbuf_pools, socket_id, CLIB_CACHE_LINE_BYTES);
579 /* pool already exists, nothing to do */
580 if (dm->pktmbuf_pools[socket_id])
583 pool_name = format (0, "dpdk_mbuf_pool_socket%u%c", socket_id, 0);
585 elt_size = sizeof (struct rte_mbuf) +
586 VLIB_BUFFER_HDR_SIZE /* priv size */ +
587 VLIB_BUFFER_PRE_DATA_SIZE + VLIB_BUFFER_DATA_SIZE; /*data room size */
590 dpdk_pool_create (vm, pool_name, elt_size, num_mbufs,
591 sizeof (dpdk_mempool_private_t), 512, socket_id,
594 vec_free (pool_name);
598 priv.mbp_priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
599 VLIB_BUFFER_DATA_SIZE;
600 priv.mbp_priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;
602 /* call the mempool priv initializer */
603 rte_pktmbuf_pool_init (rmp, &priv);
605 /* call the object initializers */
606 rte_mempool_obj_iter (rmp, rte_pktmbuf_init, 0);
608 dpdk_mempool_private_t *privp = rte_mempool_get_priv (rmp);
609 privp->buffer_pool_index = vlib_buffer_add_physmem_region (vm, pri);
611 dm->pktmbuf_pools[socket_id] = rmp;
616 clib_error_report (error);
618 /* no usable pool for this socket, try to use pool from another one */
619 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
621 if (dm->pktmbuf_pools[i])
623 clib_warning ("WARNING: Failed to allocate mempool for CPU socket "
624 "%u. Threads running on socket %u will use socket %u "
625 "mempool.", socket_id, socket_id, i);
626 dm->pktmbuf_pools[socket_id] = dm->pktmbuf_pools[i];
631 return clib_error_return (0, "failed to allocate mempool on socket %u",
637 u32 *vlib_buffer_state_validation_lock;
638 uword *vlib_buffer_state_validation_hash;
639 void *vlib_buffer_state_heap;
641 static clib_error_t *
642 buffer_state_validation_init (vlib_main_t * vm)
646 vlib_buffer_state_heap = mheap_alloc (0, 10 << 20);
648 oldheap = clib_mem_set_heap (vlib_buffer_state_heap);
650 vlib_buffer_state_validation_hash = hash_create (0, sizeof (uword));
651 vec_validate_aligned (vlib_buffer_state_validation_lock, 0,
652 CLIB_CACHE_LINE_BYTES);
653 clib_mem_set_heap (oldheap);
657 VLIB_INIT_FUNCTION (buffer_state_validation_init);
661 struct dpdk_validate_buf_result
667 #define DPDK_TRAJECTORY_POISON 31
670 dpdk_buffer_validate_trajectory (struct rte_mempool *mp, void *opaque,
671 void *obj, unsigned obj_idx)
674 struct dpdk_validate_buf_result *counter = opaque;
675 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
676 if (b->pre_data[0] != 0)
678 if (b->pre_data[0] == DPDK_TRAJECTORY_POISON)
679 counter->uninitialized++;
686 dpdk_buffer_validate_trajectory_all (u32 * uninitialized)
688 dpdk_main_t *dm = &dpdk_main;
689 struct dpdk_validate_buf_result counter = { 0 };
692 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
693 rte_mempool_obj_iter (dm->pktmbuf_pools[i],
694 dpdk_buffer_validate_trajectory, &counter);
696 *uninitialized = counter.uninitialized;
697 return counter.invalid;
701 dpdk_buffer_poison_trajectory (struct rte_mempool *mp, void *opaque,
702 void *obj, unsigned obj_idx)
705 b = vlib_buffer_from_rte_mbuf ((struct rte_mbuf *) obj);
706 b->pre_data[0] = DPDK_TRAJECTORY_POISON;
710 dpdk_buffer_poison_trajectory_all (void)
712 dpdk_main_t *dm = &dpdk_main;
715 for (i = 0; i < vec_len (dm->pktmbuf_pools); i++)
716 rte_mempool_obj_iter (dm->pktmbuf_pools[i], dpdk_buffer_poison_trajectory,
721 static clib_error_t *
722 dpdk_buffer_init (vlib_main_t * vm)
724 dpdk_buffer_main_t *dbm = &dpdk_buffer_main;
725 vlib_thread_main_t *tm = vlib_get_thread_main ();
726 vec_validate_aligned (dbm->ptd, tm->n_vlib_mains - 1,
727 CLIB_CACHE_LINE_BYTES);
731 VLIB_INIT_FUNCTION (dpdk_buffer_init);
734 VLIB_BUFFER_REGISTER_CALLBACKS (dpdk, static) = {
735 .vlib_buffer_alloc_cb = &dpdk_buffer_alloc,
736 .vlib_buffer_alloc_from_free_list_cb = &dpdk_buffer_alloc_from_free_list,
737 .vlib_buffer_free_cb = &dpdk_buffer_free,
738 .vlib_buffer_free_no_next_cb = &dpdk_buffer_free_no_next,
739 .vlib_packet_template_init_cb = &dpdk_packet_template_init,
740 .vlib_buffer_delete_free_list_cb = &dpdk_buffer_delete_free_list,
745 vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx512;
746 vlib_buffer_alloc_cb_t __clib_weak dpdk_buffer_alloc_avx2;
747 vlib_buffer_alloc_from_free_list_cb_t __clib_weak
748 dpdk_buffer_alloc_from_free_list_avx512;
749 vlib_buffer_alloc_from_free_list_cb_t __clib_weak
750 dpdk_buffer_alloc_from_free_list_avx2;
751 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx512;
752 vlib_buffer_free_cb_t __clib_weak dpdk_buffer_free_avx2;
753 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx512;
754 vlib_buffer_free_no_next_cb_t __clib_weak dpdk_buffer_free_no_next_avx2;
756 static void __clib_constructor
757 dpdk_input_multiarch_select (void)
759 vlib_buffer_callbacks_t *cb = &__dpdk_buffer_callbacks;
760 if (dpdk_buffer_alloc_avx512 && clib_cpu_supports_avx512f ())
762 cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx512;
763 cb->vlib_buffer_alloc_from_free_list_cb =
764 dpdk_buffer_alloc_from_free_list_avx512;
765 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx512;
766 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx512;
768 else if (dpdk_buffer_alloc_avx2 && clib_cpu_supports_avx2 ())
770 cb->vlib_buffer_alloc_cb = dpdk_buffer_alloc_avx2;
771 cb->vlib_buffer_alloc_from_free_list_cb =
772 dpdk_buffer_alloc_from_free_list_avx2;
773 cb->vlib_buffer_free_cb = dpdk_buffer_free_avx2;
774 cb->vlib_buffer_free_no_next_cb = dpdk_buffer_free_no_next_avx2;
782 * fd.io coding-style-patch-verification: ON
785 * eval: (c-set-style "gnu")