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authorChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-05-16 14:51:32 +0200
committerChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-05-16 16:20:45 +0200
commit7595afa4d30097c1177b69257118d8ad89a539be (patch)
tree4bfeadc905c977e45e54a90c42330553b8942e4e /drivers/mempool/ring/rte_mempool_ring.c
parentce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6 (diff)
Imported Upstream version 17.05
Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'drivers/mempool/ring/rte_mempool_ring.c')
-rw-r--r--drivers/mempool/ring/rte_mempool_ring.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/drivers/mempool/ring/rte_mempool_ring.c b/drivers/mempool/ring/rte_mempool_ring.c
new file mode 100644
index 00000000..5c132bf6
--- /dev/null
+++ b/drivers/mempool/ring/rte_mempool_ring.c
@@ -0,0 +1,165 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <rte_errno.h>
+#include <rte_ring.h>
+#include <rte_mempool.h>
+
+static int
+common_ring_mp_enqueue(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n)
+{
+ return rte_ring_mp_enqueue_bulk(mp->pool_data,
+ obj_table, n, NULL) == 0 ? -ENOBUFS : 0;
+}
+
+static int
+common_ring_sp_enqueue(struct rte_mempool *mp, void * const *obj_table,
+ unsigned n)
+{
+ return rte_ring_sp_enqueue_bulk(mp->pool_data,
+ obj_table, n, NULL) == 0 ? -ENOBUFS : 0;
+}
+
+static int
+common_ring_mc_dequeue(struct rte_mempool *mp, void **obj_table, unsigned n)
+{
+ return rte_ring_mc_dequeue_bulk(mp->pool_data,
+ obj_table, n, NULL) == 0 ? -ENOBUFS : 0;
+}
+
+static int
+common_ring_sc_dequeue(struct rte_mempool *mp, void **obj_table, unsigned n)
+{
+ return rte_ring_sc_dequeue_bulk(mp->pool_data,
+ obj_table, n, NULL) == 0 ? -ENOBUFS : 0;
+}
+
+static unsigned
+common_ring_get_count(const struct rte_mempool *mp)
+{
+ return rte_ring_count(mp->pool_data);
+}
+
+
+static int
+common_ring_alloc(struct rte_mempool *mp)
+{
+ int rg_flags = 0, ret;
+ char rg_name[RTE_RING_NAMESIZE];
+ struct rte_ring *r;
+
+ ret = snprintf(rg_name, sizeof(rg_name),
+ RTE_MEMPOOL_MZ_FORMAT, mp->name);
+ if (ret < 0 || ret >= (int)sizeof(rg_name)) {
+ rte_errno = ENAMETOOLONG;
+ return -rte_errno;
+ }
+
+ /* ring flags */
+ if (mp->flags & MEMPOOL_F_SP_PUT)
+ rg_flags |= RING_F_SP_ENQ;
+ if (mp->flags & MEMPOOL_F_SC_GET)
+ rg_flags |= RING_F_SC_DEQ;
+
+ /*
+ * Allocate the ring that will be used to store objects.
+ * Ring functions will return appropriate errors if we are
+ * running as a secondary process etc., so no checks made
+ * in this function for that condition.
+ */
+ r = rte_ring_create(rg_name, rte_align32pow2(mp->size + 1),
+ mp->socket_id, rg_flags);
+ if (r == NULL)
+ return -rte_errno;
+
+ mp->pool_data = r;
+
+ return 0;
+}
+
+static void
+common_ring_free(struct rte_mempool *mp)
+{
+ rte_ring_free(mp->pool_data);
+}
+
+/*
+ * The following 4 declarations of mempool ops structs address
+ * the need for the backward compatible mempool handlers for
+ * single/multi producers and single/multi consumers as dictated by the
+ * flags provided to the rte_mempool_create function
+ */
+static const struct rte_mempool_ops ops_mp_mc = {
+ .name = "ring_mp_mc",
+ .alloc = common_ring_alloc,
+ .free = common_ring_free,
+ .enqueue = common_ring_mp_enqueue,
+ .dequeue = common_ring_mc_dequeue,
+ .get_count = common_ring_get_count,
+};
+
+static const struct rte_mempool_ops ops_sp_sc = {
+ .name = "ring_sp_sc",
+ .alloc = common_ring_alloc,
+ .free = common_ring_free,
+ .enqueue = common_ring_sp_enqueue,
+ .dequeue = common_ring_sc_dequeue,
+ .get_count = common_ring_get_count,
+};
+
+static const struct rte_mempool_ops ops_mp_sc = {
+ .name = "ring_mp_sc",
+ .alloc = common_ring_alloc,
+ .free = common_ring_free,
+ .enqueue = common_ring_mp_enqueue,
+ .dequeue = common_ring_sc_dequeue,
+ .get_count = common_ring_get_count,
+};
+
+static const struct rte_mempool_ops ops_sp_mc = {
+ .name = "ring_sp_mc",
+ .alloc = common_ring_alloc,
+ .free = common_ring_free,
+ .enqueue = common_ring_sp_enqueue,
+ .dequeue = common_ring_mc_dequeue,
+ .get_count = common_ring_get_count,
+};
+
+MEMPOOL_REGISTER_OPS(ops_mp_mc);
+MEMPOOL_REGISTER_OPS(ops_sp_sc);
+MEMPOOL_REGISTER_OPS(ops_mp_sc);
+MEMPOOL_REGISTER_OPS(ops_sp_mc);