91ad034919
rte_mempool_calc_mem_size_helper() was introduced to avoid code duplication and used in deprecated rte_mempool_mem_size() and rte_mempool_op_calc_mem_size_default(). Now the first one is removed and it is better to fold the helper into the second one to make it more readable. Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2016 Intel Corporation.
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* Copyright(c) 2016 6WIND S.A.
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* Copyright(c) 2018 Solarflare Communications Inc.
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*/
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#include <rte_mempool.h>
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ssize_t
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rte_mempool_op_calc_mem_size_default(const struct rte_mempool *mp,
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uint32_t obj_num, uint32_t pg_shift,
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size_t *min_chunk_size, size_t *align)
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{
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size_t total_elt_sz;
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size_t obj_per_page, pg_num, pg_sz;
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size_t mem_size;
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total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
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if (total_elt_sz == 0) {
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mem_size = 0;
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} else if (pg_shift == 0) {
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mem_size = total_elt_sz * obj_num;
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} else {
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pg_sz = (size_t)1 << pg_shift;
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obj_per_page = pg_sz / total_elt_sz;
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if (obj_per_page == 0) {
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/*
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* Note that if object size is bigger than page size,
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* then it is assumed that pages are grouped in subsets
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* of physically continuous pages big enough to store
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* at least one object.
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*/
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mem_size =
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RTE_ALIGN_CEIL(total_elt_sz, pg_sz) * obj_num;
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} else {
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pg_num = (obj_num + obj_per_page - 1) / obj_per_page;
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mem_size = pg_num << pg_shift;
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}
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}
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*min_chunk_size = RTE_MAX((size_t)1 << pg_shift, total_elt_sz);
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*align = RTE_MAX((size_t)RTE_CACHE_LINE_SIZE, (size_t)1 << pg_shift);
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return mem_size;
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}
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int
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rte_mempool_op_populate_default(struct rte_mempool *mp, unsigned int max_objs,
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void *vaddr, rte_iova_t iova, size_t len,
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rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
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{
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size_t total_elt_sz;
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size_t off;
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unsigned int i;
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void *obj;
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total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
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for (off = 0, i = 0; off + total_elt_sz <= len && i < max_objs; i++) {
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off += mp->header_size;
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obj = (char *)vaddr + off;
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obj_cb(mp, obj_cb_arg, obj,
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(iova == RTE_BAD_IOVA) ? RTE_BAD_IOVA : (iova + off));
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rte_mempool_ops_enqueue_bulk(mp, &obj, 1);
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off += mp->elt_size + mp->trailer_size;
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}
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return i;
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}
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