New upstream version 18.08

[deb_dpdk.git] / lib / librte_mempool / rte_mempool_ops_default.c

diff --git a/lib/librte_mempool/rte_mempool_ops_default.c b/lib/librte_mempool/rte_mempool_ops_default.c
new file mode 100644 (file)
index 0000000..4e2bfc8
--- /dev/null
+++ b/lib/librte_mempool/rte_mempool_ops_default.c
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016 Intel Corporation.
+ * Copyright(c) 2016 6WIND S.A.
+ * Copyright(c) 2018 Solarflare Communications Inc.
+ */
+
+#include <rte_mempool.h>
+
+ssize_t
+rte_mempool_op_calc_mem_size_default(const struct rte_mempool *mp,
+                                    uint32_t obj_num, uint32_t pg_shift,
+                                    size_t *min_chunk_size, size_t *align)
+{
+       size_t total_elt_sz;
+       size_t obj_per_page, pg_num, pg_sz;
+       size_t mem_size;
+
+       total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
+       if (total_elt_sz == 0) {
+               mem_size = 0;
+       } else if (pg_shift == 0) {
+               mem_size = total_elt_sz * obj_num;
+       } else {
+               pg_sz = (size_t)1 << pg_shift;
+               obj_per_page = pg_sz / total_elt_sz;
+               if (obj_per_page == 0) {
+                       /*
+                        * Note that if object size is bigger than page size,
+                        * then it is assumed that pages are grouped in subsets
+                        * of physically continuous pages big enough to store
+                        * at least one object.
+                        */
+                       mem_size =
+                               RTE_ALIGN_CEIL(total_elt_sz, pg_sz) * obj_num;
+               } else {
+                       pg_num = (obj_num + obj_per_page - 1) / obj_per_page;
+                       mem_size = pg_num << pg_shift;
+               }
+       }
+
+       *min_chunk_size = RTE_MAX((size_t)1 << pg_shift, total_elt_sz);
+
+       *align = RTE_MAX((size_t)RTE_CACHE_LINE_SIZE, (size_t)1 << pg_shift);
+
+       return mem_size;
+}
+
+int
+rte_mempool_op_populate_default(struct rte_mempool *mp, unsigned int max_objs,
+               void *vaddr, rte_iova_t iova, size_t len,
+               rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
+{
+       size_t total_elt_sz;
+       size_t off;
+       unsigned int i;
+       void *obj;
+
+       total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
+
+       for (off = 0, i = 0; off + total_elt_sz <= len && i < max_objs; i++) {
+               off += mp->header_size;
+               obj = (char *)vaddr + off;
+               obj_cb(mp, obj_cb_arg, obj,
+                      (iova == RTE_BAD_IOVA) ? RTE_BAD_IOVA : (iova + off));
+               rte_mempool_ops_enqueue_bulk(mp, &obj, 1);
+               off += mp->elt_size + mp->trailer_size;
+       }
+
+       return i;
+}